WO2018109980A1 - Damper apparatus - Google Patents
Damper apparatus Download PDFInfo
- Publication number
- WO2018109980A1 WO2018109980A1 PCT/JP2017/029928 JP2017029928W WO2018109980A1 WO 2018109980 A1 WO2018109980 A1 WO 2018109980A1 JP 2017029928 W JP2017029928 W JP 2017029928W WO 2018109980 A1 WO2018109980 A1 WO 2018109980A1
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- WIPO (PCT)
- Prior art keywords
- cushion
- rotating body
- coil spring
- cushion material
- plate
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/121—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs
- F16F15/127—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon using springs as elastic members, e.g. metallic springs using plastics springs combined with other types of springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/10—Suppression of vibrations in rotating systems by making use of members moving with the system
- F16F15/12—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon
- F16F15/131—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses
- F16F15/133—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs
- F16F15/137—Suppression of vibrations in rotating systems by making use of members moving with the system using elastic members or friction-damping members, e.g. between a rotating shaft and a gyratory mass mounted thereon the rotating system comprising two or more gyratory masses using springs as elastic members, e.g. metallic springs the elastic members consisting of two or more springs of different kinds, e.g. elastomeric members and wound springs
Definitions
- Embodiments of the present invention relate to a damper device.
- the damper device includes, for example, two rotating bodies respectively connected to an output shaft and an input shaft, and a coil spring interposed between these rotating bodies.
- a damper device attenuates rotational fluctuations input from the engine by a coil spring.
- ⁇ Cushion members such as rubber and elastomer may be placed in the coil spring.
- the torsion angles of the two rotating bodies are within a predetermined range, only the coil spring contracts.
- the torsion angle exceeds a predetermined range, both the coil spring and the cushion member contract, and the characteristics of the torsion angle with respect to torque change.
- a stopper portion is provided in the damper device. For example, when the torsion angle reaches a predetermined angle, the stopper portions of the two rotating bodies come into contact with each other, and the twisting of the two rotating bodies is restricted (Patent Document 1).
- the stopper is provided outside the coil spring in order to secure a space for arranging the cushion member inside the coil spring.
- the damper device is increased in size.
- the coil spring may be arranged in the radially inner side, but in this case, the torsional characteristics of the damper device are deteriorated.
- the present invention has been made in view of the above, and provides a damper device in which a coil spring can be disposed more radially outward.
- a damper device includes, as an example, a first rotating body that can rotate around a rotation center, a second rotating body that can rotate around the rotation center, and the first rotating body.
- a first rotary body positioned between the second rotary body and elastically compressed by rotating the first rotary body relative to the second rotary body to one side in a rotational direction; Coil spring and the first coil spring, and the first rotating body rotates relative to the second rotating body at a larger angle than the first angle on one side in the rotational direction.
- a first cushion material that is elastically compressed by the operation, a first stopper portion that is disposed in the first coil spring and holds the first cushion material, and the first coil spring.
- the first cushion member is held so as to be able to approach and separate from the first stopper portion in the expansion / contraction direction of the first rotation portion, and the first rotation body is one of the rotation directions with respect to the second rotation body.
- the first rotating body is in contact with the first stopper portion while being rotated to a second angle larger than the first angle, and the first rotating body is in the rotational direction with respect to the second rotating body.
- a second stopper portion that restricts relative rotation to one side. Therefore, as an example, there is no need to provide a stopper on the outer peripheral side of the first coil spring, and the first coil spring can be arranged more radially outward.
- the damper device is positioned between the third rotating body that is rotatable around the rotation center, the second rotating body, and the third rotating body, and is disposed on the third rotating body.
- the second rotating body is arranged in the second coil spring, the second coil spring being elastically compressed by rotating relatively to one side in the rotation direction, and the third coil spring.
- a second cushion member that is elastically compressed by rotating the second rotor relative to one side of the rotational direction more than a third angle relative to the rotor, and the second cushion
- a third stopper portion disposed in the coil spring and holding the second cushion material; and a third stopper portion disposed in the second coil spring, wherein the third coil spring extends and contracts in the direction of expansion and contraction.
- the second cushion member is held as much as possible, and the second rotating body rotates to one side of the rotation direction to a fourth angle larger than the third angle with respect to the third rotating body.
- the first cushion material has a side surface facing the first coil spring
- the first stopper portion has a part of the side surface of the first cushion material.
- the second stopper portion surrounds a part of the side surface of the first cushion material, and is positioned between the first coil spring and the side surface of the first cushion material. It is located between one coil spring and the side surface of the first cushion material. Therefore, as an example, it is suppressed that the 1st cushion material contacts the 1st coil spring.
- the first cushion member rotates relative to the second rotating body by a greater amount than the first angle on one side of the rotational direction relative to the first rotating body.
- the first rotating portion that is elastically compressed and the first coil spring can be moved toward and away from each other in the expansion and contraction direction of the first coil spring, and the first rotating body is separated from the second rotating body.
- the first stopper portion is interposed between the first rotating body or the second rotating body and the first coil spring, and the first coil spring is disposed.
- the first coil spring is disposed.
- the relative position of the first coil spring and the first cushion material is suppressed from changing, and the first coil spring and the first cushion material are prevented from contacting each other.
- FIG. 1 is a cross-sectional view illustrating an example of a damper device according to the first embodiment.
- FIG. 2 is a front view showing an example of the damper device by cutting out a part of the disk plate of the first embodiment.
- FIG. 3 is a front view showing the damper device with the drive plate of the first embodiment omitted.
- FIG. 4 is a cross-sectional view illustrating a part of the example of the damper device according to the first embodiment at a position different from that in FIG. 1.
- FIG. 5 is a cross-sectional view illustrating an example of the cushion according to the first embodiment.
- FIG. 6 is a graph illustrating an example of characteristics of the damper device according to the first embodiment.
- FIG. 7 is a front view showing an example of the damper device in the cushion region of the first embodiment, omitting the drive plate.
- FIG. 8 is a front view showing an example of the damper device in the contact area of the first embodiment, omitting the drive plate.
- FIG. 9 is a cross-sectional view illustrating an example of a cushion according to the second embodiment.
- FIG. 10 is a cross-sectional view illustrating an example of a cushion according to the third embodiment.
- FIG. 11 is a cross-sectional view illustrating an example of a compressed cushion according to the third embodiment.
- FIG. 12 is a graph illustrating an example of characteristics of the damper device according to the third embodiment.
- FIG. 13 is a cross-sectional view illustrating a part of an example of a damper device according to the fourth embodiment.
- FIG. 1 is a cross-sectional view showing an example of a damper device 1 according to the first embodiment.
- the damper device 1 includes a drive plate 2 on the outside, an intermediate plate 3 on the inside, and a driven plate 4 on the inside.
- the drive plate 2 is an example of a third rotating body.
- the intermediate plate 3 is an example of a second rotating body.
- the driven plate 4 is an example of a first rotating body.
- the drive plate 2, the intermediate plate 3, and the driven plate 4 can rotate around the central axis Ax shown in FIG.
- the center axis Ax is an example of the center of rotation.
- a direction orthogonal to the central axis Ax is referred to as a radial direction
- a direction along the central axis Ax is referred to as an axial direction
- a direction rotating around the central axis Ax is referred to as a circumferential direction or a rotational direction.
- the drive plate 2 can rotate independently of the intermediate plate 3 and can rotate independently of the driven plate 4.
- the drive plate 2, the intermediate plate 3, and the driven plate 4 are rotatable relative to each other.
- the drive plate 2 is connected to the crankshaft of the engine via, for example, a flywheel.
- the drive plate 2 is not limited to the engine, and may be connected to another drive source such as a motor or another device.
- the crankshaft extends along the central axis Ax.
- the flywheel is formed, for example, in a disk shape extending in the radial direction.
- the drive plate 2 includes a bush 21, two disk plates 22, a support plate 24, and two lining portions 25 in order from the side closer to the central axis Ax.
- the support plate 24 may be referred to as a cushion spring, for example.
- the lining portion 25 can also be referred to as a friction material, for example.
- the bush 21 has two boss portions 21a and a plurality of locking portions 21b.
- the boss portion 21a is formed in a substantially cylindrical shape extending along the central axis Ax.
- the two boss portions 21a are arranged in the axial direction through a gap.
- the locking portion 21b protrudes radially outward from the outer peripheral surface of the two boss portions 21a.
- FIG. 2 is a front view showing an example of the damper device 1 by cutting out a part of the disk plate 22 of the first embodiment.
- the disk plate 22 is formed in a disk shape that extends in the radial direction.
- the two disc plates 22 each have an inner frame portion 22a, an outer frame portion 22b, two first frame portions 22c, and two second frame portions 22d.
- FIG. 2 shows only one of the two first frame portions 21c.
- the number of the 1st frame part 22c and the 2nd frame part 22d is not restricted to this.
- the inner frame portion 22a is formed in a disk shape extending in the radial direction, and is provided with a fitting hole 22e extending along the central axis Ax.
- a spline portion 22f is further provided on the inner frame portion 22a.
- the spline portion 22f is formed by a plurality of grooves extending in the radial direction from the inner peripheral surface of the fitting hole 22e.
- one boss portion 21a of the bush 21 is fitted into the fitting hole 22e.
- a locking portion 21 b protruding from the boss portion 21 a is fitted into the spline portion 22 f of the disc plate 22.
- the disc plate 22 is attached to the bush 21, and the disc plate 22 and the bush 21 can rotate integrally around the central axis Ax.
- the outer frame portion 22b is formed in an annular shape surrounding the inner frame portion 22a with a gap therebetween.
- the first frame portion 22c and the second frame portion 22d connect the outer peripheral side of the inner frame portion 22a and the inner peripheral side of the outer frame portion 22b.
- the two first frame portions 22c extend in the radial direction from the inner frame portion 22a in opposite directions.
- the two second frame portions 22d extend in the radial direction from the inner frame portion 22a in opposite directions.
- the direction in which the first frame portion 22c extends and the direction in which the second frame portion 22d extend are substantially orthogonal, but the direction in which the first and second frame portions 22c and 22d extend is limited to this. Absent.
- the inner frame portion 22a, the outer frame portion 22b, the first frame portion 22c, and the second frame portion 22d form a plurality of openings 22g.
- the opening 22g exposes the inside of the damper device 1 covered with the disk plate 22.
- the two disk plates 22 are arranged side by side with a gap in the axial direction.
- the two disk plates 22 are connected to each other by a first connection member 27 extending in the axial direction.
- Both ends of the first connecting member 27 are fixed to the two disc plates 22 by caulking, for example.
- the first connecting member 27 restricts relative rotation of the two disk plates 22. Thereby, the two disk plates 22 can rotate integrally around the central axis Ax.
- the two disc plates 22 have substantially the same shape, but may have different shapes.
- the inner frame portion 22a, the outer frame portion 22b, the first frame portion 22c, and the second frame portion 22d of the two disc plates 22 are arranged side by side in the axial direction. For this reason, the opening 22g of one disk plate 22 and the opening 22g of the other disk plate 22 are provided at positions corresponding to each other.
- the support plate 24 is formed in an annular shape larger than the outer frame portion 22b of the disk plate 22.
- the inner peripheral portion of the support plate 24 is attached to the outer frame portion 22b of one of the disk plates 22 by, for example, the first connecting member 27 or a screw.
- the support plate 24 projects outward in the radial direction from the outer frame portion 22 b of the disk plate 22.
- the support plate 24 may be attached to other parts.
- the lining portion 25 is formed in, for example, an annular shape surrounding the disc plate 22 with an interval.
- the two lining portions 25 are attached to both sides of the support plate 24 in the axial direction at the outer peripheral portion of the support plate 24.
- the two lining portions 25 are in contact with the flywheel.
- the intermediate plate 3 is disposed between the two disk plates 22 in the axial direction.
- the intermediate plate 3 has two plates 31.
- the two plates 31 are arranged side by side with a gap in the axial direction.
- FIG. 3 is a front view showing the damper device 1 by omitting the drive plate 2 of the first embodiment.
- the plate 31 has an intermediate portion 33 and two arms 34.
- the number of arms 34 is not limited to two.
- the intermediate portion 33 is formed in a disk shape extending in the radial direction, and is provided with an insertion hole 33a extending along the central axis Ax. As shown in FIG. 1, the boss portion 21a of the bush 21 of the drive plate 2 is fitted into the insertion hole 33a. The boss portion 21a and the plate 31 are relatively rotatable around the central axis Ax.
- the boss portion 21a fitted in the insertion hole 33a restricts the plate 31 from moving in the radial direction.
- the boss portion 21a of the bush 21 arranges (centers) the plate 31 according to the central axis Ax.
- the two arms 34 extend from the intermediate portion 33 in the radial direction and in opposite directions. In FIG. 3, the two arms 34 extend to the upper left and lower right. In the radial direction, the length from the central axis Ax to the outer peripheral surface of the arm 34 is shorter than the length from the central axis Ax to the outer peripheral surface of the outer frame portion 22 b of the disk plate 22.
- the overhanging portion 34 a is a portion that protrudes from the distal end portion of the arm 34 to both sides in the circumferential direction. In other words, the two overhanging portions 34 a protrude from the distal end portion of the arm 34 in opposite directions in the circumferential direction.
- FIG. 4 is a cross-sectional view showing a part of the example of the damper device 1 according to the first embodiment at a position different from that in FIG. As shown in FIG. 4, the second connection member 36 extending in the axial direction is attached to the two plates 31.
- the second connecting member 36 connects the two plates 31 to each other. Both ends of the second connecting member 36 are fixed to the two plates 31 by, for example, caulking.
- the second connecting member 36 limits the relative rotation of the two plates 31. Thereby, the two plates 31 can rotate integrally around the central axis Ax.
- the two plates 31 have substantially the same shape, but may have different shapes.
- the intermediate portion 33 and the arm 34 of the two plates 31 are arranged side by side in the axial direction. Thereby, the arm 34 of one plate 31 and the arm 34 of the other plate 31 are disposed at positions corresponding to each other.
- the driven plate 4 is connected to the transmission via, for example, an input shaft.
- the driven plate 4 is not limited to the transmission, and may be connected to another device such as a motor.
- the driven plate 4 includes an inner hub 41, an outer hub 42, and a spring 43.
- the inner hub 41 has a boss portion 41a and a plurality of locking portions 41b.
- the boss portion 41a is formed in a substantially cylindrical shape extending along the central axis Ax.
- An input shaft is fitted inside the boss portion 41a. Rotation is transmitted between the boss portion 41a and the input shaft via, for example, a spline or a key.
- the boss 41a of the inner hub 41 is fitted inside the boss 21a of the bush 21 of the drive plate 2.
- the boss portion 41a of the inner hub 41 and the boss portion 21a of the bush 21 are relatively rotatable around the central axis Ax.
- the plurality of locking portions 41b protrude in the radial direction from the outer peripheral surface of the boss portion 41a.
- the locking portion 41b is disposed between the two boss portions 21a of the bush 21 of the drive plate 2 in the axial direction.
- the outer hub 42 is disposed between the two plates 31 of the intermediate plate 3 in the axial direction.
- the outer hub 42 is not limited to this, and may be disposed outside the two plates 31.
- the outer hub 42 has an intermediate portion 42a and two arms 42b.
- FIG. 3 shows the driven plate 4 with the inner hub 41 and the spring 43 omitted.
- the number of arms 42b is not limited to two.
- the intermediate part 42a is formed in a disk shape extending in the radial direction, and is provided with an insertion hole 42c extending along the central axis Ax.
- a spline portion 42d is further provided in the intermediate portion 42a.
- the spline portion 42d is formed by a plurality of grooves extending in the radial direction from the inner peripheral surface of the insertion hole 42c.
- the boss portion 41 a of the inner hub 41 is fitted inside the insertion hole 42 c of the outer hub 42.
- the boss 41a of the inner hub 41 and the outer hub 42 are relatively rotatable around the central axis Ax.
- the locking portion 41b of the inner hub 41 is fitted into the spline portion 42d of the outer hub 42.
- a gap is formed between the end portion of the spline portion 42 d of the outer hub 42 and the end portion of the locking portion 41 b of the inner hub 41.
- the spring 43 is a coiled compression spring.
- the spring 43 is disposed in a gap between the end portion of the spline portion 42 d of the outer hub 42 and the end portion of the locking portion 41 b of the inner hub 41 in the circumferential direction. In other words, the spring 43 is interposed between the inner hub 41 and the outer hub 42 in the circumferential direction.
- the spring 43 rotates in the circumferential direction with the end of the spline portion 42d of the outer hub 42 and the end of the locking portion 41b of the inner hub 41. Compressed by part.
- the spring 43 applies a force that rotates in the opposite direction to the inner hub 41 and the outer hub 42 that are relatively rotated in one direction around the central axis Ax.
- the two arms 42b of the outer hub 42 extend radially from the intermediate portion 42a in opposite directions.
- the two arms 42b extend to the upper right and lower left.
- the length from the central axis Ax to the outer peripheral surface of the arm 42 b is shorter than the length from the central axis Ax to the outer peripheral surface of the outer frame portion 22 b of the disk plate 22.
- the arm 42 b of the outer hub 42 is overlapped with the first frame portion 22 c of the disk plate 22 of the drive plate 2 in the axial direction.
- the positions of the arm 42b of the outer hub 42 and the first frame portion 22c of the disk plate 22 are not limited to this.
- the overhanging portion 42e is a portion that protrudes from the distal end portion of the arm 42b to both sides in the circumferential direction. In other words, the two overhang portions 42e protrude in opposite directions from each other in the circumferential direction from the tip portion of the arm 42b.
- the damper device 1 further includes four torsion springs 5, four first seats 6, four second seats 7, and four cushions 8.
- the number of the torsion springs 5, the first and second seats 6, 7 and the cushions 8 is not limited to this.
- the torsion spring 5 is a coiled compression spring (coil spring).
- the torsion spring 5 is located between the arm 42 b of the outer hub 42 of the driven plate 4 and the arm 34 of the plate 31 of the intermediate plate 3 in the circumferential direction.
- the torsion spring 5 is also positioned between the first frame portion 22 c of the disk plate 22 of the drive plate 2 and the arm 34 of the plate 31 of the intermediate plate 3.
- the first sheet 6 and the second sheet 7 are made of, for example, a synthetic resin material. Each of the first sheet 6 and the second sheet 7 may be made of other materials.
- the four first seats 6 are removably supported on both sides in the circumferential direction of the two first frame portions 22c of the drive plate 2. As shown in FIG. 3, the four first sheets 6 are also detachably supported on both circumferential sides of the two arms 42 b of the driven plate 4. The first sheet 6 is supported by an overhanging portion 42 e provided on the arm 42 b of the outer hub 42.
- Each of the four first sheets 6 includes a support wall 61, two extending walls 62, a convex portion 63, and a cover portion 64.
- the support wall 61 covers one end of the arm 42b of the driven plate 4 in the circumferential direction.
- the support wall 61 supports one end 5 a of the torsion spring 5. That is, the support wall 61 is interposed between the arm 42 b and the torsion spring 5.
- the two extending walls 62 are arranged side by side with a gap in the axial direction and extend from the support wall 61 in the circumferential direction.
- the arm 42 b of the driven plate 4 is disposed between the two extending walls 62.
- two extending walls 62 are disposed between the first frame portions 22 c of the two disk plates 22 of the drive plate 2 in the axial direction.
- the arm 42b of the driven plate 4 and the first frame portion 22c of the drive plate 2 restrict the first seat 6 from moving in the axial direction.
- a depression 65 is provided in the support wall 61.
- the recess 65 is a bottomed hole that opens in the circumferential direction, and is located between the two extending walls 62 in the axial direction.
- the overhang portion 42 e of the driven plate 4 is fitted in the recess 65. Thereby, the first sheet 6 is supported by the overhanging portion 42 e of the driven plate 4.
- the convex portion 42 f provided on the protruding portion 42 e of the driven plate 4 is inserted into the recess 65.
- the protruding portion 42 e of the driven plate 4 supports the first sheet 6 by the convex portion 42 f contacting the inner surface of the recess 65.
- a gap G is formed on at least one of the radially inner side and the outer side across the convex portion 42f and the depression 65. That is, a gap (space) G is provided between the driven plate 4 and the first sheet 6 in a state where the driven plate 4 supports the first sheet 6.
- the first sheet 6 can rotate (swing) in a plane perpendicular to the axial direction with respect to the driven plate 4. That is, when the first sheet 6 is viewed in the axial direction as shown in FIG. 3, the first sheet 6 can rotate around the rotation center extending parallel to the central axis Ax.
- the rotation center of the first sheet 6 is, for example, a contact point between the convex portion 42 f and the recess 65, and the position can be changed with the rotation of the first sheet 6.
- the first sheet 6 can rotate with respect to the driven plate 4 while changing the position of the rotation center parallel to the central axis Ax.
- the rotation center of the first sheet 6 may be at a fixed position.
- storage portions 22h are formed in the first frame portion 22c of the drive plate 2, respectively.
- the accommodating portion 22h is a recess that opens in the circumferential direction.
- the extending walls 62 of the first sheet 6 are respectively fitted in the accommodating portions 22h.
- the extending wall 62 of the first sheet 6 is in contact with the inner surface of the accommodating portion 22h.
- the first seat 6 is supported by the first frame portion 22c of the drive plate 2 so as to be rotatable in a plane orthogonal to the axial direction.
- the first sheet 6 is rotatable around the portion where the driven plate 4 and the drive plate 2 support the first sheet 6 in the direction approaching the center axis Ax or away from the center axis Ax.
- the first sheet 6 can be rotated within a predetermined range. That is, when the first sheet 6 rotates until the gap G disappears, the first sheet 6 comes into contact with the driven plate 4 or the drive plate 2 and further rotation is restricted.
- the first sheet 6 is supported by one of the driven plate 4 and the drive plate 2 when the driven plate 4 and the drive plate 2 are relatively rotated.
- the driven plate 4 moves in the counterclockwise direction of FIG.
- one first sheet 6 ⁇ / b> A in the circumferential direction is supported by the driven plate 4 and detached from the drive plate 2.
- the other first sheet 6 ⁇ / b> B in the circumferential direction is supported by the drive plate 2 and detached from the driven plate 4.
- the first sheet 6A is the first sheet 6 located in the counterclockwise direction of the first frame portion 22c of the drive plate 2 and the arm 42b of the driven plate 4.
- the first sheet 6B is the first sheet 6 positioned in the clockwise direction of the first frame portion 22c of the drive plate 2 and the arm 42b of the driven plate 4.
- the convex part 63 protrudes from the support wall 61 in the substantially circumferential direction.
- the convex portion 63 projects toward the arm 34 of the intermediate plate 3.
- the convex portion 63 is formed in a substantially cylindrical shape, but may be formed in other shapes.
- the convex portion 63 is inserted into the torsion spring 5 from one end portion 5 a of the torsion spring 5. In other words, the convex portion 63 is disposed inside the torsion spring 5. Thereby, the convex part 63 restrict
- the cover 64 extends from the support wall 61 in the circumferential direction.
- the covering portion 64 extends in the direction opposite to the two extending walls 62.
- the cover part 64 covers a part of the torsion spring 5 from the radially outer side. When the torsion spring 5 bends radially outward by centrifugal force, the cover portion 64 comes into contact with the torsion spring 5 and restricts the torsion spring 5 from moving radially outward.
- the four second sheets 7 are respectively supported on both sides in the circumferential direction of the two arms 34 of the intermediate plate 3.
- Each of the four second sheets 7 includes a support wall 71 and a convex portion 72.
- the support wall 71 covers one end of the arm 34 of the intermediate plate 3 in the circumferential direction.
- the support wall 71 supports the other end 5 b of the torsion spring 5. That is, the support wall 71 is interposed between the arm 34 and the torsion spring 5.
- the support wall 71 has an interposition part 71a and two side parts 71b.
- the interposition part 71a and the two side parts 71b are integrally formed. In the axial direction, the interposition part 71a is located between the two side parts 71b.
- the interposition part 71a is located between the arms 34 of the two plates 31 of the intermediate plate 3 in the axial direction. Thereby, the arms 34 of the two plates 31 of the intermediate plate 3 restrict the movement of the second sheet 7 in the axial direction.
- the two side portions 71b are arranged at substantially the same position as the arms 34 of the two plates 31 of the intermediate plate 3 in the axial direction.
- Concave portions 74 are provided in the two side portions 71b, respectively.
- the recess 74 is a notch that opens in the axial direction and opens toward the arm 34 in the circumferential direction.
- the overhanging portion 34 a of the intermediate plate 3 is fitted into the recess 74. As a result, the second sheet 7 is supported by the overhanging portion 34 a of the intermediate plate 3.
- the protrusion 34 b provided on the overhang 34 a of the arm 34 is fitted into the recess 74.
- the protruding portion 34 b contacts the edge of the recess 74, so that the overhang portion 34 a of the arm 34 supports the second sheet 7.
- the protrusion 34b is formed in a claw shape and restricts the movement of the second sheet 7 in the circumferential direction.
- a gap (space) G is formed on at least one of the inner side and the outer side in the radial direction across the protrusion 34b. That is, the gap G is provided between the arm 34 and the second sheet 7 with the arm 34 supporting the second sheet 7.
- the second sheet 7 can rotate (swing) in a plane perpendicular to the central axis Ax with respect to the arm 34. That is, when the second sheet 7 is viewed in the axial direction as shown in FIG. 3, the second sheet 7 can rotate around the rotation center extending parallel to the central axis Ax.
- the rotation center of the second sheet 7 is, for example, a contact point between the protrusion 34 b and the recess 74, and the position can be changed as the second sheet 7 rotates.
- the second sheet 7 is rotatable with respect to the intermediate plate 3 while changing the position of the rotation center parallel to the central axis Ax. Note that the rotation center of the second sheet 7 may be at a fixed position.
- the second sheet 7 is rotatable around the portion where the intermediate plate 3 supports the second sheet 7 in a direction approaching the center axis Ax or away from the center axis Ax.
- the second sheet 7 is rotatable within a predetermined range. That is, when the second sheet 7 rotates until the gap G disappears, the second sheet 7 comes into contact with the intermediate plate 3 and further rotation is restricted.
- seat 7 protrudes from the support wall 71 in the substantially circumferential direction.
- the convex portion 72 of the second sheet 7 protrudes toward the first sheet 6.
- the convex portion 63 of the first sheet 6 protrudes toward the second sheet 7.
- the convex portion 72 is formed in a substantially cylindrical shape, but may be formed in other shapes.
- the convex portion 72 is inserted into the torsion spring 5 from the other end portion 5 b of the torsion spring 5. In other words, the convex portion 72 is disposed inside the torsion spring 5. Thereby, the convex part 72 restrict
- the torsion spring 5 is interposed between the first sheet 6 supported by the driven plate 4 and the drive plate 2 and the second sheet 7 supported by the intermediate plate 3 in the circumferential direction. For this reason, the first sheet 6 is interposed between the driven plate 4 and the drive plate 2 and the torsion spring 5.
- the second sheet 7 is interposed between the intermediate plate 3 and the torsion spring 5.
- the driven plate 4 When the driven plate 4, the intermediate plate 3, and the drive plate 2 rotate relatively, the torsion springs 5 supported by the first and second sheets 6 and 7 are compressed and elastically deformed.
- the clockwise direction is an example of one side of the rotation direction.
- first torsion springs 51 two of the four torsion springs 5 are referred to as first torsion springs 51, and the other two of the four torsion springs 5 are referred to as second torsion springs 52.
- the first torsion spring 51 is an example of a first coil spring.
- the second torsion spring 52 is an example of a second coil spring.
- the first torsion springs 51 and the second torsion springs 52 are alternately arranged in the circumferential direction.
- second sheets 7A two of the four second sheets 7 are referred to as second sheets 7A, and the other two of the four second sheets 7 are referred to as second sheets 7B.
- the second sheet 7A is located in the counterclockwise direction of the intermediate plate 3.
- the second sheet 7B is positioned in the clockwise direction of the intermediate plate 3.
- the first torsion spring 51 is positioned between the arm 42b of the driven plate 4 that rotates and the arm 34 of the intermediate plate 3 that the driven plate 4 approaches. For this reason, the first torsion spring 51 is located between the first sheet 6B and the second sheet 7A.
- the second torsion spring 52 is located between the arm 34 of the intermediate plate 3 and the first frame portion 22c of the drive plate 2 that the intermediate plate 3 approaches. For this reason, the second torsion spring 52 is located between the first sheet 6A and the second sheet 7B.
- the angle ⁇ 1 between the intermediate plate 3 and the driven plate 4 around the central axis Ax decreases.
- the distance between the first sheet 6B supported by the driven plate 4 and the second sheet 7A supported by the intermediate plate 3 is reduced, and the first sheet 6B and the second sheet 7A are reduced.
- the supported first torsion spring 51 is elastically compressed. The compressed first torsion spring 51 pushes the intermediate plate 3 and the driven plate 4 so as to increase the angle between the intermediate plate 3 and the driven plate 4.
- the angle ⁇ 2 between the drive plate 2 and the intermediate plate 3 around the central axis Ax becomes small.
- the supported second torsion spring 52 is elastically compressed. The compressed second torsion spring 52 pushes the drive plate 2 and the intermediate plate 3 so as to increase the angle between the drive plate 2 and the intermediate plate 3.
- the angle ⁇ 2 between the drive plate 2 and the intermediate plate 3 around the central axis Ax is kept constant by the four torsion springs 5.
- the angle ⁇ 1 between the intermediate plate 3 and the driven plate 4 is kept constant.
- the direction in which the arm 34 of the intermediate plate 3 extends and the direction in which the arm 42b of the driven plate 4 extends are substantially orthogonal. The direction in which the arms 34 and 42b extend is not limited to this.
- the torsion spring 5 pushes the first sheet 6 toward the drive plate 2 and the driven plate 4. Thereby, the first sheet 6 is supported by at least one of the drive plate 2 and the driven plate 4. Similarly, the torsion spring 5 pushes the second sheet 7 toward the intermediate plate 3. As a result, the second sheet 7 is supported by the intermediate plate 3.
- the torsion spring 5 pushes the rotatable first sheet 6 and second sheet 7.
- the support wall 61 of the first sheet 6 and the support wall 71 of the second sheet 7 are kept substantially parallel. .
- the drive plate 2 of the damper device 1 is connected to the crankshaft of the engine via the flywheel.
- the driven plate 4 is connected to the transmission via an input shaft.
- the torque transmitted to the flywheel when the engine is driven is, for example, from the drive plate 2 to the first seat 6, the torsion spring 5, the second seat 7, the intermediate plate 3, the second seat 7, and the torsion spring. 5 and the first sheet 6 are transmitted to the driven plate 4.
- the driven plate 4 transmits the torque to the transmission through the input shaft.
- the rotation speed of the engine crankshaft varies depending on the driver's operation and engine stroke. Due to such a change in the rotational speed of the crankshaft, the rotational speed of the input shaft may become faster than the rotational speed of the crankshaft.
- the torque is, for example, from the driven plate 4 to the first sheet 6, the torsion spring 5, the second sheet 7, the intermediate plate 3, the second sheet 7, the torsion spring 5, and the first sheet 6. And can be transmitted to the drive plate 2.
- the first torsion spring 51 and the second torsion spring 52 are connected in series.
- the spring constant of two springs connected in series is calculated to be a quarter of the spring constant of two springs connected in parallel.
- the torsional rigidity of the damper device 1 in which the first torsion spring 51 and the second torsion spring 52 are connected in series is obtained when the first torsion spring 51 and the second torsion spring 52 are connected in parallel. It can be lower than the torsional rigidity.
- the first torsion spring 51 and the second torsion spring 52 have substantially the same spring constant.
- the damper device 1 may have a plurality of torsional stiffnesses that change according to the torsion angle.
- Each of the four cushions 8 is disposed in the torsion spring 5 and is positioned between the first seat 6 and the second seat 7.
- the four cushions 8 include two cushions 8A and two cushions 8B.
- the cushion 8A is accommodated in the first torsion spring 51 and is positioned between the first seat 6B and the second seat 7A.
- the cushion 8B is accommodated in the second torsion spring 52 and is positioned between the first seat 6A and the second seat 7B.
- FIG. 5 is a cross-sectional view showing an example of the cushion 8 according to the first embodiment.
- the cushion 8 includes a cushion material 81, a first guide 82, and a second guide 83.
- the cushion material 81 of the cushion 8A is an example of a first cushion material.
- the first guide 82 of the cushion 8A is an example of a first stopper portion.
- the second guide 83 of the cushion 8A is an example of a second stopper portion.
- the cushion material 81, the first guide 82, and the second guide 83 of the cushion 8 ⁇ / b> A are disposed in the first torsion spring 51.
- the cushion material 81 of the cushion 8B is an example of a second cushion material.
- the first guide 82 of the cushion 8B is an example of a third stopper portion.
- the second guide 83 of the cushion 8B is an example of a fourth stopper portion.
- the cushion material 81, the first guide 82, and the second guide 83 of the cushion 8 ⁇ / b> B are disposed in the second torsion spring 52.
- the cushion material 81 is made of an elastomer and has elasticity.
- the elastomer includes synthetic rubber, natural rubber, urethane rubber, silicon rubber, and fluororubber.
- the cushion material 81 may be made of other materials.
- the cushion material 81 is formed in a substantially cylindrical shape extending along the expansion / contraction direction of the torsion spring 5 that accommodates the cushion material 81 therein.
- the longitudinal direction of the cushion material 81 may be inclined with respect to the expansion / contraction direction of the torsion spring 5.
- the cushion material 81 has a first end surface 81a, a second end surface 81b, and a side surface 81c.
- the first end surface 81 a faces the first sheet 6.
- the second end surface 81 b is located on the opposite side of the first end surface 81 a and faces the second sheet 7.
- the side surface 81c faces in a direction intersecting with the direction in which the first end surface 81a and the second end surface 81b face.
- a side surface 81 c of the cushion material 81 of the cushion 8 ⁇ / b> A faces the inner periphery of the first torsion spring 51.
- the inner periphery of the first torsion spring 51 is a portion on the inner periphery side of the first torsion spring 51 extending in a substantially cylindrical shape.
- a side surface 81 c of the cushion material 81 of the cushion 8 ⁇ / b> B faces the inner periphery of the second torsion spring 52.
- the inner periphery of the second torsion spring 52 is a portion on the inner periphery side of the second torsion spring 52 extending in a substantially cylindrical shape.
- the first guide 82 and the second guide 83 are made of synthetic resin, for example.
- the Young's modulus of the material of the first and second guides 82 and 83 is higher than the Young's modulus of the material of the cushion material 81. For this reason, the cushion material 81 is more easily elastically deformed than the first and second guides 82 and 83.
- the first and second guides 82 and 83 may be made of other materials.
- the first guide 82 has a bottom wall 82a and a peripheral wall 82b.
- the bottom wall 82 a is formed in a substantially disk shape and covers the first end surface 81 a of the cushion material 81.
- the bottom wall 82 a is located between the first seat 6 and the cushion material 81.
- the peripheral wall 82b is formed in a substantially cylindrical shape protruding from the edge of the bottom wall 82a.
- the peripheral wall 82b surrounds a part of the side surface 81c of the cushion material 81 in the longitudinal direction.
- the peripheral wall 82b is shorter than the cushion material 81 in a free state where no external force is applied.
- the peripheral wall 82b of the cushion 8A is located between the inner periphery of the first torsion spring 51 and the side surface 81c of the cushion material 81, and suppresses contact between the first torsion spring 51 and the cushion material 81.
- the peripheral wall 82b of the cushion 8B is located between the inner periphery of the second torsion spring 52 and the side surface 81c of the cushion material 81, and suppresses the contact between the second torsion spring 52 and the cushion material 81.
- a hole or a slit that exposes the cushion material 81 may be provided in the peripheral wall 82b as long as the contact between the torsion spring 5 and the cushion material 81 is suppressed.
- the cushion material 81 is fixed to the bottom wall 82a and the peripheral wall 82b of the first guide 82.
- the cushion material 81 and the first guide 82 are made by insert molding, or the first guide 82 is bonded to the cushion material 81.
- the second guide 83 has a bottom wall 83a and a peripheral wall 83b.
- the bottom wall 83a is formed in a substantially disk shape and covers the second end surface 81b of the cushion material 81.
- the bottom wall 83 a is located between the second seat 7 and the cushion material 81.
- the peripheral wall 83b is formed in a substantially cylindrical shape protruding from the edge of the bottom wall 83a.
- the peripheral wall 83b surrounds a part of the side surface 81c of the cushion material 81 in the longitudinal direction.
- the peripheral wall 83b is shorter than the cushion material 81 in a free state where no external force is applied.
- the peripheral wall 83b of the cushion 8A is located between the inner periphery of the first torsion spring 51 and the side surface 81c of the cushion material 81 and suppresses the first torsion spring 51 and the cushion material 81 from coming into contact with each other.
- the peripheral wall 83b of the cushion 8B is located between the inner periphery of the second torsion spring 52 and the side surface 81c of the cushion material 81, and suppresses the contact between the second torsion spring 52 and the cushion material 81.
- the peripheral wall 83b may be provided with a hole or a slit for exposing the cushion material 81, for example, if the torsion spring 5 and the cushion material 81 are prevented from contacting each other.
- the cushion material 81 When the cushion material 81 is in a free state, the first guide 82 and the second guide 83 are separated from each other. The cushion material 81 is exposed to the outside of the cushion 8 from between the first guide 82 and the second guide 83.
- the cushion material 81 is fixed to the bottom wall 83a and the peripheral wall 83b of the second guide 83.
- the cushion material 81 and the second guide 83 are made by insert molding, or the second guide 83 is bonded to the cushion material 81. For this reason, the first guide 82 and the second guide 83 hold the cushion material 81.
- the cushion 8 can be elastically expanded and contracted in the expansion and contraction direction of the torsion spring 5.
- the first guide 82 and the second guide 83 approach each other, and the cushion material 81 is elastically compressed.
- the cushion material 81 is elastically restored, and the first guide 82 and the second guide 83 are separated from each other.
- the first guide 82 and the second guide 83 can be moved toward and away from each other in the extending and contracting direction of the torsion spring 5.
- the peripheral wall 82b of the first guide 82 and the peripheral wall 83b of the second guide 83 come into contact with each other. Thereby, the 1st guide 82 and the 2nd guide 83 restrict
- the depression 81d is provided on the side surface 81c of the cushion material 81.
- the recess 81d is located between the first guide 82 and the second guide 83 when the cushion material 81 is in a free state.
- the recess 81 d is recessed in a direction away from the peripheral walls 82 b and 83 b of the first and second guides 82 and 83.
- the cushion 8 is located between the convex portion 63 of the first sheet 6 and the convex portion 72 of the second sheet 7.
- the cushion 8 is movable between the convex portion 63 of the first seat 6 and the convex portion 72 of the second seat 7 in the expansion / contraction direction of the torsion spring 5. That is, the cushion 8 can be separated from at least one of the convex portion 63 of the first seat 6 and the convex portion 72 of the second seat 7.
- the damper device 1 further includes a plurality of first friction members 11, a first leaf spring 12, a plurality of second friction members 13, and a second leaf spring 14.
- the 1st and 2nd friction members 11 and 13 may also be called a thrust member, for example.
- the plurality of first friction members 11 are respectively attached to the two disk plates 22 of the drive plate 2.
- the first friction member 11 is interposed between the drive plate 2 and the intermediate plate 3 in the axial direction.
- the first friction member 11 generates a frictional force between the first friction member 11 and the intermediate plate 3.
- the first leaf spring 12 is interposed between the first friction member 11 and the disk plate 22.
- the first leaf spring 12 pushes the first friction member 11 toward the intermediate plate 3.
- the first leaf spring 12 increases the frictional force generated between the first friction member 11 and the intermediate plate 3.
- the plurality of second friction members 13 are respectively attached to the two plates 31 of the intermediate plate 3.
- the second friction member 13 is interposed between the intermediate plate 3 and the driven plate 4 in the axial direction.
- the second friction member 13 generates a friction force between the driven plate 4 and the second friction member 13.
- the second leaf spring 14 is interposed between the second friction member 13 and the plate 31 of the intermediate plate 3.
- the second leaf spring 14 pushes the second friction member 13 toward the driven plate 4.
- the second leaf spring 14 increases the frictional force generated between the second friction member 13 and the driven plate 4.
- FIG. 6 is a graph showing an example of the characteristics of the damper device 1 according to the first embodiment.
- the vertical axis indicates the torque acting on the damper device 1.
- the horizontal axis indicates the relative rotation angle (twist angle) between the drive plate 2 and the driven plate 4 from the state where no external force acts on the drive plate 2 and the driven plate 4. That is, the graph of FIG. 6 shows the twist angle between the drive plate 2 and the driven plate 4 with respect to the torque acting on the damper device 1.
- the slope of the graph in FIG. 6 is proportional to the torsional rigidity of the damper device 1. That is, the smaller the slope of the graph, the lower the torsional rigidity of the damper device 1. The higher the torsional rigidity of the damper device 1, the easier the driven plate 4 rotates relative to the drive plate 2.
- the graph of the twist angle with respect to the torque of the damper device 1 has three regions of a series region F1, a cushion region F2, and a contact region F3 according to the twist angle.
- the natural angular frequency of the damper device 1 is different in the series region F1, the cushion region F2, and the contact region F3.
- the damper device 1 is not limited to this, and may have only two of these three regions.
- FIG. 3 shows the damper device 1 in the series region F1.
- FIG. 7 is a front view showing an example of the damper device 1 in the cushion region F2 of the first embodiment, with the drive plate 2 omitted.
- FIG. 8 is a front view showing an example of the damper device 1 in the contact region F3 of the first embodiment, with the drive plate 2 omitted. 7 and 8 show the driven plate 4 with the inner hub 41 and the spring 43 omitted, as in FIG.
- the series region F1 is a region in which the first torsion spring 51 and the second torsion spring 52 connected in series attenuate the rotational fluctuation of the engine. That is, in the series region F1, the four torsion springs 5 can both expand and contract.
- the cushion 8 is separated from at least one of the first seat 6 and the second seat 7 in the series region F1. For this reason, in the series area
- the angle ⁇ 1 between the arm 34 of the intermediate plate 3 and the arm 42b of the driven plate 4 decreases. Furthermore, as the torque increases, the angle ⁇ 2 between the first frame portion 22c of the drive plate 2 and the arm 34 of the intermediate plate 3 decreases.
- the damper device 1 changes from the series region F1 to the cushion region F2.
- the inclination of the graph of the twist angle ⁇ t with respect to the torque in the cushion region F2 is larger than the slope of the graph of the twist angle ⁇ t with respect to the torque in the series region F1. That is, the torsional rigidity of the damper device 1 in the cushion region F2 is higher than the torsional rigidity of the damper device 1 in the series region F1.
- the driven plate 4 rotates relative to the intermediate plate 3 to half of the first contact twist angle ⁇ t1 (1 / 2 ⁇ t1), the convex portion 63 of the first sheet 6B and the convexity of the second sheet 7A.
- the part 72 contacts the cushion 8A.
- 1 / 2 ⁇ t1 is an example of the first angle.
- the first angle is not limited to this.
- the driven plate 4 rotates relative to the intermediate plate 3 by more than 1 / 2 ⁇ t1
- the cushion 8A is compressed in the expansion and contraction direction of the torsion spring 5.
- the cushion material 81 between the first guide 82 and the second guide 83 is elastically compressed.
- the intermediate plate 3 rotates relative to the drive plate 2 to half of the first contact twist angle ⁇ t1 (1 / 2 ⁇ t1), the convex portion 63 of the first sheet 6A and the convexity of the second sheet 7B.
- the part 72 contacts the cushion 8B.
- 1 / 2 ⁇ t1 is an example of a third angle.
- the third angle is not limited to this, and may be different from the first angle.
- the intermediate plate 3 By rotating the intermediate plate 3 relatively larger than 1 / 2 ⁇ t1 with respect to the drive plate 2, the second sheet 7B supported by the intermediate plate 3 and the first sheet 6A supported by the driven plate 4 However, the cushion 8B is compressed in the expansion / contraction direction of the torsion spring 5. As a result, the cushion material 81 between the first guide 82 and the second guide 83 is elastically compressed.
- the adjacent metal wires of the torsion spring 5 wound in a coil shape remain separated from each other. That is, the torsion spring 5 can be further compressed.
- the cushion region F2 is a region in which the first torsion spring 51 and the second torsion spring 52 connected in series, and the cushion 8A and the cushion 8B connected in series attenuate the rotational fluctuation of the engine. That is, in the cushion region F2, the four torsion springs 5 and the four cushions 8 can both expand and contract.
- the damper device 1 changes from the cushion region F2 to the contact region F3.
- the second contact twist angle ⁇ t2 is larger than the first contact twist angle ⁇ t1.
- the increase in the twist angle ⁇ t with respect to the increase in torque stops. That is, the torsional rigidity of the damper device 1 in the contact region F3 is higher than the torsional rigidity of the damper device 1 in the cushion region F2.
- the first guide 82 and the second guide 83 of the cushion 8A contact each other. Touch.
- the first and second guides 82 and 83 restrict the driven plate 4 from further rotating relative to the intermediate plate 3.
- 1 / 2 ⁇ t2 is an example of the second angle, and is larger than 1 / 2 ⁇ t1. Note that the second angle is not limited to this.
- the first guide 82 and the second guide 83 of the cushion 8B contact each other. Touch.
- the first and second guides 82 and 83 restrict the intermediate plate 3 from further rotating relative to the drive plate 2.
- 1 / 2 ⁇ t2 is an example of the fourth angle, and is larger than 1 / 2 ⁇ t1.
- the fourth angle is not limited to this, and may be different from the second angle.
- the contact region F3 is a region where the torsion spring 5 and the cushion 8 do not attenuate engine rotational fluctuations.
- the adjacent metal wires of the torsion spring 5 wound in a coil shape remain separated from each other. That is, in the absence of the first and second guides 82 and 83, the torsion spring 5 can be further compressed.
- the first and second guides 82 and 83 are brought into contact with each other, thereby suppressing the torsion spring 5 from being excessively compressed and causing an adhesion limit.
- a service torque T1 and a sliding torque T2 are set in the damper device 1.
- the normal torque T1 is the maximum torque when the engine rotation is in the normal range.
- the slip torque T2 is a torque that causes slip between the lining portion 25 of the drive plate 2 and the flywheel. That is, when the torque increases and reaches the slip torque T2, slip occurs between the lining portion 25 of the drive plate 2 and the flywheel.
- the slip torque T2 is larger than the normal torque T1.
- the damper device 1 is set so that the torque reaches the normal torque T1 in the cushion region F2, for example.
- the twist angle ⁇ t with respect to the torque can be adjusted by the lengths of the convex portions 63 and 72 of the first and second sheets 6 and 7 and the spring constant of the torsion spring 5.
- the second guide 83 of the cushion 8A is in a state where the driven plate 4 is rotated to 1 ⁇ 2 ⁇ t2 on one side in the rotational direction with respect to the intermediate plate 3.
- Contacting the first guide 82 restricts the driven plate 4 from rotating relative to the intermediate plate 3 to one side in the rotational direction.
- the first guide 82 portion and the second guide 83 that suppress the first torsion spring 51 from reaching the close contact limit are disposed in the first torsion spring 51.
- the first torsion spring 51 By disposing the first torsion spring 51 on the outer side in the radial direction, a decrease in the damping performance (torsional characteristic) of the first torsion spring 51 is suppressed, and an increase in the size of the damper device 1 is suppressed.
- the stopper which restrict
- the stopper is disposed outside the coil spring, and the coil spring is disposed more radially inward.
- the second torsion spring 52 is positioned between the intermediate plate 3 and the drive plate 2, and the first torsion spring 51 and the second torsion spring 52 are connected in series.
- the intermediate plate 3 comes into contact with the first guide 82 in a state where the intermediate plate 3 is rotated to 1 ⁇ 2 ⁇ t2 on one side in the rotation direction with respect to the drive plate 2, so A second guide 83 that restricts relative rotation to one side in the rotation direction with respect to 2 is arranged. That is, not only the cushion material 81 but also the relative rotation of the drive plate 2, the intermediate plate 3, and the driven plate 4 in the first and second torsion springs 51 and 52 connected in series as described above. First and second guides 82 and 83 for limiting the above are arranged. Thereby, it is not necessary to arrange the stopper outside the first and second torsion springs 51 and 52, and the first and second torsion springs 51 and 52 can be arranged more radially outward.
- the first and second guides 82 and 83 surround a part of the side surface 81c of the cushion material 81 and are positioned between the first torsion spring 51 and the side surface 81c of the cushion material 81. Thereby, it is suppressed that the cushion material 81 contacts the 1st torsion spring 51.
- FIG. since the first and second guides 82 and 83 support the side surface 81c of the cushion material 81, the cushion material 81 can be easily kept straight. Thereby, the 1st and 2nd guides 82 and 83 can guide the expansion-contraction direction of the cushioning material 81.
- FIG. 9 is a cross-sectional view showing an example of the cushion 8 according to the second embodiment.
- the cushion material 81 of the second embodiment is formed in a cylindrical shape that extends in the expansion and contraction direction of the torsion spring 5.
- the cushion material 81 is provided with a hole 81e communicating with the first end surface 81a and the second end surface 81b.
- the first guide 82 of the second embodiment has a bottom wall 82a and a protrusion 82c.
- the protrusion 82 c protrudes from the bottom wall 82 a and is inserted into the hole 81 e of the cushion material 81.
- the cushion material 81 covers the protrusion 82c.
- the second guide 83 of the second embodiment has a bottom wall 83a and a protrusion 83c.
- the protrusion 83 c protrudes from the bottom wall 83 a and is inserted into the hole 81 e of the cushion material 81.
- the cushion material 81 covers the protrusion 83c.
- the driven plate 4 When the driven plate 4 is rotated to 1 ⁇ 2 ⁇ t2 to one side in the rotation direction with respect to the intermediate plate 3, the protrusion 83c of the second guide 83 of the cushion 8A comes into contact with the protrusion 82c of the first guide 82. As a result, the driven plate 4 is restricted from rotating relative to the intermediate plate 3 to one side in the rotational direction.
- the intermediate plate 3 rotates to 1 ⁇ 2 ⁇ t2 on one side in the rotational direction with respect to the drive plate 2, the protrusion 83c of the second guide 83 of the cushion 8B comes into contact with the protrusion 82c of the first guide 82. Thereby, it is restricted that the intermediate plate 3 rotates relative to the drive plate 2 in one direction in the rotation direction.
- the projection 82c of the first guide 82 and the projection 83c of the second guide 83 are passed through the hole 81e of the cushion material 81.
- the hole 81e guides the projection 82c of the first guide 82 and the projection 83c of the second guide 83, so that the two projections 82c and 83c can contact each other more reliably.
- FIG. 10 is a cross-sectional view illustrating an example of the cushion 8 according to the third embodiment.
- the cushion material 81 of the third embodiment includes a first fixing portion 85, a second fixing portion 86, a first compression portion 87, and two second compression portions 88. And have.
- the first fixing portion 85 is disposed inside the first guide 82 and is fixed to the first guide 82.
- the second fixing portion 86 is disposed inside the second guide 83 and is fixed to the second guide 83.
- the first compression portion 87 connects the first fixing portion 85 and the second fixing portion 86.
- the first compression portion 87 is formed in a substantially cylindrical shape extending in the expansion / contraction direction of the torsion spring 5.
- the 1st compression part 87 may be formed in another shape.
- One second compression portion 88 protrudes from the first fixing portion 85 toward the second fixing portion 86.
- the other second compression portion 88 protrudes from the second fixing portion 86 toward the first fixing portion 85.
- Each of the two second compression portions 88 is formed in a substantially cylindrical shape extending in the expansion / contraction direction of the torsion spring 5 and surrounds the first compression portion 87.
- the second compression unit 88 may be formed in other shapes. In a free state where no external force acts on the cushion 8, the two second compression portions 88 are separated from each other.
- FIG. 11 is a cross-sectional view showing an example of the compressed cushion 8 according to the third embodiment. As shown in FIG. 11, when the cushion 8 is compressed, the first compression portion 87 is crushed and the two second compression portions 88 are in contact with each other. The second compression portion 88 contacts each other before the first and second guides 82 and 83 contact each other.
- the first compression portion 87 is elastically restored and the first compression portion 87 is extended.
- the two second compression portions 88 are separated from each other.
- the two second compression portions 88 can approach and separate from each other in the expansion and contraction direction of the torsion spring 5.
- FIG. 12 is a graph showing an example of the characteristics of the damper device 1 according to the third embodiment.
- the vertical axis indicates the torque acting on the damper device 1.
- the horizontal axis represents the twist angle from the state where no external force acts on the drive plate 2 and the driven plate 4.
- the graph of the twist angle with respect to the torque of the damper device 1 includes the series region F1, the first cushion region F2A, the second cushion region F2B, and the like according to the twist angle. It has three areas of contact area F3. In the series region F1, the first cushion region F2A, the second cushion region F2B, and the contact region F3, the natural angular frequency of the damper device 1 is different.
- the damper device 1 changes from the series region F1 to the first cushion region F2A.
- the inclination of the graph of the twist angle with respect to the torque in the first cushion region F2A is larger than the slope of the graph of the twist angle ⁇ t with respect to the torque in the series region F1. That is, the torsional rigidity of the damper device 1 in the first cushion region F2A is higher than the torsional rigidity of the damper device 1 in the series region F1.
- the convex portion 63 of the first seat 6 comes into contact with the first guide 82 of the cushion 8. Further, the convex portion 72 of the second seat 7 abuts on the second guide 83 of the cushion 8. That is, the first and second seats 6 and 7 are in contact with the cushion 8 in the first cushion region F2A.
- the driven plate 4 rotates relative to the intermediate plate 3 by more than 1 / 2 ⁇ t1
- the cushion 8A is compressed in the expansion and contraction direction of the torsion spring 5.
- the 1st compression part 87 of the cushioning material 81 is compressed elastically.
- the two second compression portions 88 are separated from each other.
- the intermediate plate 3 By rotating the intermediate plate 3 relatively larger than 1 / 2 ⁇ t1 with respect to the drive plate 2, the second sheet 7B supported by the intermediate plate 3 and the first sheet 6A supported by the driven plate 4 However, the cushion 8B is compressed in the expansion / contraction direction of the torsion spring 5. Thereby, the 1st compression part 87 of the cushioning material 81 is compressed elastically. On the other hand, in the first cushion region F2A, the two second compression portions 88 are separated from each other.
- the first cushion region F2A includes the first torsion spring 51 and the second torsion spring 52 connected in series, and the first compression portions 87 of the cushion 8A and the cushion 8B connected in series. This is a region for attenuating the rotational fluctuation of the. That is, in the first cushion region F2A, the four torsion springs 5 and the first compression portions 87 of the four cushions 8 can both expand and contract.
- the damper device 1 changes from the first cushion region F2A to the second cushion region F2B.
- the inclination of the twist angle graph with respect to the torque in the second cushion region F2B is larger than the inclination of the twist angle graph with respect to the torque in the first cushion region F2A. That is, the torsional rigidity of the damper device 1 in the second cushion region F2B is higher than the torsional rigidity of the damper device 1 in the first cushion region F2A.
- the third contact twist angle ⁇ t3 is larger than the first contact twist angle ⁇ t1 and smaller than the second contact twist angle ⁇ t2.
- the driven plate 4 rotates relative to the intermediate plate 3 more than half of the third contact twist angle ⁇ t3 (1 / 2 ⁇ t3), so that the first compression portion 87 of the cushion 8A is in contact with each other.
- the two second compression portions 88 are elastically compressed.
- 1 / 2 ⁇ t3 is an example of the fifth angle, and is larger than 1 / 2 ⁇ t1 and smaller than 1 / 2 ⁇ t2.
- the first compression portion 87 of the cushion 8B and the two second compression portions 88 in contact with each other are elastic. Is compressed.
- the second cushion region F2B includes a first torsion spring 51 and a second torsion spring 52 connected in series, and first and second compression portions 87 of the cushion 8A and the cushion 8B connected in series, respectively. , 88 are areas in which engine rotation fluctuations are attenuated. That is, in the second cushion region F2B, the four torsion springs 5 and the first and second compression portions 87 and 88 of the four cushions 8 can both expand and contract.
- the damper device 1 changes from the second cushion region F2B to the contact region F3.
- the first guide 82 and the second guide 83 contact each other.
- the two second compression portions 88 of the cushion material 81 are configured such that the driven plate 4 is on the one side in the rotational direction with respect to the intermediate plate 3 than 1 / 2 ⁇ t1.
- the first torsion spring 51 is compressed while the rotational angle of the driven plate 4 with respect to the intermediate plate 3 is up to 1 / 2 ⁇ t1, and the first torsional spring 51 is compressed while the rotational angle is larger than 1 / 2 ⁇ t1 and smaller than 1 / 2 ⁇ t3.
- the first torsion spring 51 and the first and second compression portions 87 and 88 are compressed while the torsion spring 51 and the first compression portion 87 are compressed and the rotation angle is larger than 1 / 2 ⁇ t3 and smaller than 1 / 2 ⁇ t2. And are compressed.
- the damper apparatus 1 it becomes possible for the damper apparatus 1 to have several rigidity according to a rotation angle.
- FIG. 13 is a cross-sectional view illustrating a part of an example of the damper device 1 according to the fourth embodiment.
- the cushion 8 is formed integrally with the first seat 6.
- a first guide 82 is provided instead of the convex portion 63 of the first sheet 6.
- the first guide 82 is formed integrally with the support wall 61 of the first sheet 6.
- the first sheet 6 including the first guide 82 is an example of a first stopper portion.
- the first seat 6 including the first guide 82 is interposed between the driven plate 4 and the torsion spring 5 and supports the torsion spring 5.
- the first guide 82 is inserted into the torsion spring 5 and restricts the torsion spring 5 from moving in the radial direction and the axial direction.
- the second guide 83 is connected to the first seat 6 via the cushion material 81.
- the twist angle ⁇ t reaches the first contact twist angle ⁇ t 1
- the second guide 83 comes into contact with the convex portion 72 of the second sheet 7.
- the second sheet 7 of the fourth embodiment further has a cover 77.
- the cover 77 extends from the support wall 71 in the circumferential direction.
- the cover 77 covers a part of the torsion spring 5 from the radially outer side. When the torsion spring 5 bends radially outward due to centrifugal force, the cover 77 contacts the torsion spring 5 and restricts the torsion spring 5 from moving radially outward.
- the first guide 82 and the second guide 83 come into contact with each other. Further, when the twist angle ⁇ t reaches the second contact twist angle ⁇ t2, the cover portion 64 of the first sheet 6 and the cover portion 77 of the second sheet 7 may contact each other.
- the cover part 64 of the first sheet 6 and the cover part 77 of the second sheet 7 limit, for example, that the driven plate 4 rotates relative to the intermediate plate 3.
- the first seat 6 including the first guide 82 is interposed between the driven plate 4 and the torsion spring 5 and supports the torsion spring 5. Thereby, it is suppressed that the relative position of the torsion spring 5 and the cushion material 81 changes, and it is suppressed that the torsion spring 5 and the cushion material 81 contact.
- the cushion 8 is formed integrally with the first seat 6.
- the cushion 8 may be formed integrally with the second seat 7.
- the second sheet 7 including the first guide 82 is an example of the first guide.
- the series region F1, the cushion region F2 (first cushion region F2A, second cushion region F2B), and the contact region F3 are set.
- the torsion angle ⁇ t that shifts to these regions includes, for example, the Young's modulus of the torsion spring 5 and the cushion material 81, the pre-compression of the torsion spring 5, the lengths of the first and second seats 6 and 7, It can be adjusted according to the length of the second guides 82 and 83.
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Abstract
A damper apparatus according to an embodiment includes, by way of example: a first rotor and a second rotor; a first coil spring that is compressed by rotation of the first rotor with respect to the second rotor; a first cushion material that is arranged in the first coil spring and compressed by rotation of the first rotor with respect to the second rotor through an angle larger than a first angle; a first stopper part that is arranged in the first coil spring and holds the first cushion material; and a second stopper part that is arranged in the first coil spring, holds the first cushion material and comes into contact with the first stopper part in the state where the first rotor is rotated to a second angle with respect to the second rotor, thereby restricting rotation of the first rotor with respect to the second rotor.
Description
本発明の実施形態は、ダンパ装置に関する。
Embodiments of the present invention relate to a damper device.
従来、エンジンの出力軸と、トランスミッションの入力軸との間に設けられるダンパ装置が知られる。ダンパ装置は、例えば、出力軸と入力軸とにそれぞれ接続された二つの回転体と、これらの回転体の間に介在するコイルスプリングとを有する。このようなダンパ装置は、エンジンから入力される回転変動をコイルスプリングによって減衰させる。
Conventionally, a damper device provided between the output shaft of the engine and the input shaft of the transmission is known. The damper device includes, for example, two rotating bodies respectively connected to an output shaft and an input shaft, and a coil spring interposed between these rotating bodies. Such a damper device attenuates rotational fluctuations input from the engine by a coil spring.
コイルスプリングの中に、ゴムやエラストマーのようなクッション部材が配置されることがある。二つの回転体の捩り角が所定の範囲内では、コイルスプリングのみが収縮する。捩り角が所定の範囲を超えると、コイルスプリングとクッション部材とが共に収縮し、トルクに対する捩り角についての特性が変化する。
¡Cushion members such as rubber and elastomer may be placed in the coil spring. When the torsion angles of the two rotating bodies are within a predetermined range, only the coil spring contracts. When the torsion angle exceeds a predetermined range, both the coil spring and the cushion member contract, and the characteristics of the torsion angle with respect to torque change.
一方で、コイルスプリングが密着限界となることを防ぐため、ダンパ装置にストッパ部が設けられる。例えば、捩り角が所定の角度まで到達すると、二つの回転体のストッパ部が互いに当たり、二つの回転体の捩れを規制する(特許文献1)。
On the other hand, in order to prevent the coil spring from reaching the contact limit, a stopper portion is provided in the damper device. For example, when the torsion angle reaches a predetermined angle, the stopper portions of the two rotating bodies come into contact with each other, and the twisting of the two rotating bodies is restricted (Patent Document 1).
しかしながら、従来の構成では、コイルスプリングの内部にクッション部材を配置するためのスペースを確保するため、ストッパはコイルスプリングの外に設けられる。例えば、ストッパ部がコイルスプリングの外周側に配置されると、ダンパ装置が大型化してしまう。ダンパ装置の大型化を防ぐため、コイルスプリングが径方向内側に寄せられて配置されることもあるが、この場合、ダンパ装置の捩れ特性が低下してしまう。
However, in the conventional configuration, the stopper is provided outside the coil spring in order to secure a space for arranging the cushion member inside the coil spring. For example, when the stopper portion is disposed on the outer peripheral side of the coil spring, the damper device is increased in size. In order to prevent an increase in the size of the damper device, the coil spring may be arranged in the radially inner side, but in this case, the torsional characteristics of the damper device are deteriorated.
そこで、本発明は上記に鑑みてなされたものであり、コイルスプリングをより径方向外側に配置可能なダンパ装置を提供する。
Therefore, the present invention has been made in view of the above, and provides a damper device in which a coil spring can be disposed more radially outward.
本発明の実施形態に係るダンパ装置は、一例として、回転中心まわりに回転可能な第1の回転体と、前記回転中心まわりに回転可能な第2の回転体と、前記第1の回転体と前記第2の回転体との間に位置し、前記第2の回転体に対して前記第1の回転体が相対的に回転方向の一方側に回転することにより弾性的に圧縮される第1のコイルスプリングと、前記第1のコイルスプリングの中に配置され、前記第2の回転体に対して前記第1の回転体が相対的に回転方向の一方側に第1の角度よりも大きく回転することにより弾性的に圧縮される第1のクッション材と、前記第1のコイルスプリングの中に配置され、前記第1のクッション材を保持する第1のストッパ部と、前記第1のコイルスプリングの中に配置され、前記第1のコイルスプリングの伸縮方向において前記第1のストッパ部に対して接近及び離間可能に前記第1のクッション材を保持し、前記第2の回転体に対して前記第1の回転体が前記回転方向の一方側に前記第1の角度よりも大きい第2の角度まで回転した状態で前記第1のストッパ部に接触して、前記第1の回転体が前記第2の回転体に対して前記回転方向の一方側に相対的に回転することを制限する、第2のストッパ部と、を備える。よって、一例としては、第1のコイルスプリングの外周側にストッパを設ける必要が無く、第1のコイルスプリングをより径方向外側に配置することが可能となる。
A damper device according to an embodiment of the present invention includes, as an example, a first rotating body that can rotate around a rotation center, a second rotating body that can rotate around the rotation center, and the first rotating body. A first rotary body positioned between the second rotary body and elastically compressed by rotating the first rotary body relative to the second rotary body to one side in a rotational direction; Coil spring and the first coil spring, and the first rotating body rotates relative to the second rotating body at a larger angle than the first angle on one side in the rotational direction. A first cushion material that is elastically compressed by the operation, a first stopper portion that is disposed in the first coil spring and holds the first cushion material, and the first coil spring. Arranged in the first coil spring The first cushion member is held so as to be able to approach and separate from the first stopper portion in the expansion / contraction direction of the first rotation portion, and the first rotation body is one of the rotation directions with respect to the second rotation body. The first rotating body is in contact with the first stopper portion while being rotated to a second angle larger than the first angle, and the first rotating body is in the rotational direction with respect to the second rotating body. A second stopper portion that restricts relative rotation to one side. Therefore, as an example, there is no need to provide a stopper on the outer peripheral side of the first coil spring, and the first coil spring can be arranged more radially outward.
上記ダンパ装置は、一例として、前記回転中心まわりに回転可能な第3の回転体と、前記第2の回転体と前記第3の回転体との間に位置し、前記第3の回転体に対して前記第2の回転体が相対的に回転方向の一方側に回転することにより弾性的に圧縮される第2のコイルスプリングと、前記第2のコイルスプリングの中に配置され、前記第3の回転体に対して前記第2の回転体が相対的に回転方向の一方側に第3の角度よりも大きく回転することにより弾性的に圧縮される第2のクッション材と、前記第2のコイルスプリングの中に配置され、前記第2のクッション材を保持する第3のストッパ部と、前記第2のコイルスプリングの中に配置され、前記第2のコイルスプリングの伸縮方向において前記第3のストッパ部に対して接近及び離間可能に前記第2のクッション材を保持し、前記第3の回転体に対して前記第2の回転体が前記回転方向の一方側に前記第3の角度よりも大きい第4の角度まで回転した状態で前記第3のストッパ部に接触して、前記第2の回転体が前記第3の回転体に対して前記回転方向の一方側に相対的に回転することを制限する、第4のストッパ部と、をさらに備える。よって、一例としては、直列に配置された第1及び第2のコイルスプリングの中に第1及び第2のクッション材を配置したとしても、ストッパを第1及び第2のコイルスプリングの外に配置する必要が無く、第1及び第2のコイルスプリングをより径方向外側に配置することが可能となる。
As an example, the damper device is positioned between the third rotating body that is rotatable around the rotation center, the second rotating body, and the third rotating body, and is disposed on the third rotating body. On the other hand, the second rotating body is arranged in the second coil spring, the second coil spring being elastically compressed by rotating relatively to one side in the rotation direction, and the third coil spring. A second cushion member that is elastically compressed by rotating the second rotor relative to one side of the rotational direction more than a third angle relative to the rotor, and the second cushion A third stopper portion disposed in the coil spring and holding the second cushion material; and a third stopper portion disposed in the second coil spring, wherein the third coil spring extends and contracts in the direction of expansion and contraction. Approach and move away from the stopper The second cushion member is held as much as possible, and the second rotating body rotates to one side of the rotation direction to a fourth angle larger than the third angle with respect to the third rotating body. A fourth stopper that contacts the third stopper portion in a state and restricts the second rotating body from rotating relative to the third rotating body to one side in the rotation direction. And a section. Therefore, as an example, even if the first and second cushion materials are arranged in the first and second coil springs arranged in series, the stopper is arranged outside the first and second coil springs. There is no need to do this, and the first and second coil springs can be arranged more radially outward.
上記ダンパ装置では、一例として、前記第1のクッション材は、前記第1のコイルスプリングに向く側面を有し、前記第1のストッパ部は、前記第1のクッション材の前記側面の一部を囲み、前記第1のコイルスプリングと前記第1のクッション材の前記側面との間に位置し、前記第2のストッパ部は、前記第1のクッション材の前記側面の一部を囲み、前記第1のコイルスプリングと前記第1のクッション材の前記側面との間に位置する。よって、一例としては、第1のクッション材が第1のコイルスプリングに接触することが抑制される。
In the damper device, as an example, the first cushion material has a side surface facing the first coil spring, and the first stopper portion has a part of the side surface of the first cushion material. And the second stopper portion surrounds a part of the side surface of the first cushion material, and is positioned between the first coil spring and the side surface of the first cushion material. It is located between one coil spring and the side surface of the first cushion material. Therefore, as an example, it is suppressed that the 1st cushion material contacts the 1st coil spring.
上記ダンパ装置では、一例として、前記第1のクッション材は、前記第2の回転体に対して前記第1の回転体が相対的に回転方向の一方側に前記第1の角度よりも大きく回転することにより弾性的に圧縮される第1の圧縮部と、前記第1のコイルスプリングの伸縮方向において互いに接近及び離間可能であり、前記第2の回転体に対して前記第1の回転体が前記回転方向の一方側に前記第1の角度よりも大きく且つ前記第2の角度よりも小さい第5の角度よりも大きく回転することにより互いに接触した状態で弾性的に圧縮される、二つの第2の圧縮部と、を有する。よって、一例としては、ダンパ装置が回転角度に応じて複数の剛性を有することが可能となる。
In the damper device, as an example, the first cushion member rotates relative to the second rotating body by a greater amount than the first angle on one side of the rotational direction relative to the first rotating body. The first rotating portion that is elastically compressed and the first coil spring can be moved toward and away from each other in the expansion and contraction direction of the first coil spring, and the first rotating body is separated from the second rotating body. Two first elastically compressed in contact with each other by rotating larger than a fifth angle smaller than the first angle and smaller than the second angle on one side of the rotation direction. 2 compression sections. Therefore, as an example, the damper device can have a plurality of rigidity depending on the rotation angle.
上記ダンパ装置では、一例として、前記第1のストッパ部は、前記第1の回転体又は前記第2の回転体と前記第1のコイルスプリングとの間に介在し、前記第1のコイルスプリングを支持する。よって、一例としては、第1のコイルスプリングと第1のクッション材との相対的な位置が変化することが抑制され、第1のコイルスプリングと第1のクッション材とが接触することが抑制される。
In the damper device, as an example, the first stopper portion is interposed between the first rotating body or the second rotating body and the first coil spring, and the first coil spring is disposed. To support. Therefore, as an example, the relative position of the first coil spring and the first cushion material is suppressed from changing, and the first coil spring and the first cushion material are prevented from contacting each other. The
(第1の実施形態)
以下に、第1の実施形態について、図1乃至図8を参照して説明する。なお、本明細書において、実施形態に係る構成要素及び当該要素の説明について、複数の表現が記載されることがある。複数の表現がされた構成要素及び説明は、記載されていない他の表現がされても良い。さらに、複数の表現がされない構成要素及び説明も、記載されていない他の表現がされても良い。 (First embodiment)
The first embodiment will be described below with reference to FIGS. 1 to 8. In the present specification, a plurality of expressions may be described for the constituent elements according to the embodiment and the description of the elements. The constituent elements and descriptions in which a plurality of expressions are made may be other expressions that are not described. Further, the constituent elements and descriptions that are not expressed in a plurality may be expressed in other ways that are not described.
以下に、第1の実施形態について、図1乃至図8を参照して説明する。なお、本明細書において、実施形態に係る構成要素及び当該要素の説明について、複数の表現が記載されることがある。複数の表現がされた構成要素及び説明は、記載されていない他の表現がされても良い。さらに、複数の表現がされない構成要素及び説明も、記載されていない他の表現がされても良い。 (First embodiment)
The first embodiment will be described below with reference to FIGS. 1 to 8. In the present specification, a plurality of expressions may be described for the constituent elements according to the embodiment and the description of the elements. The constituent elements and descriptions in which a plurality of expressions are made may be other expressions that are not described. Further, the constituent elements and descriptions that are not expressed in a plurality may be expressed in other ways that are not described.
図1は、第1の実施形態に係るダンパ装置1の一例を示す断面図である。図1に示すように、ダンパ装置1は、外側にあるドライブプレート2と、内側にある中間プレート3と、さらに内側にあるドリブンプレート4とを有する。ドライブプレート2は、第3の回転体の一例である。中間プレート3は、第2の回転体の一例である。ドリブンプレート4は、第1の回転体の一例である。
FIG. 1 is a cross-sectional view showing an example of a damper device 1 according to the first embodiment. As shown in FIG. 1, the damper device 1 includes a drive plate 2 on the outside, an intermediate plate 3 on the inside, and a driven plate 4 on the inside. The drive plate 2 is an example of a third rotating body. The intermediate plate 3 is an example of a second rotating body. The driven plate 4 is an example of a first rotating body.
ドライブプレート2と、中間プレート3と、ドリブンプレート4とは、それぞれ、図1に示す中心軸Axまわりに回転可能である。中心軸Axは、回転中心の一例である。以下、中心軸Axに直交する方向を径方向、中心軸Axに沿う方向を軸方向、中心軸Axまわりに回転する方向を周方向又は回転方向とそれぞれ称する。
The drive plate 2, the intermediate plate 3, and the driven plate 4 can rotate around the central axis Ax shown in FIG. The center axis Ax is an example of the center of rotation. Hereinafter, a direction orthogonal to the central axis Ax is referred to as a radial direction, a direction along the central axis Ax is referred to as an axial direction, and a direction rotating around the central axis Ax is referred to as a circumferential direction or a rotational direction.
ドライブプレート2は、中間プレート3に対して独立して回転可能であるとともに、ドリブンプレート4に対して独立して回転可能である。言い換えると、ドライブプレート2と、中間プレート3と、ドリブンプレート4とは、互いに相対的に回転可能である。
The drive plate 2 can rotate independently of the intermediate plate 3 and can rotate independently of the driven plate 4. In other words, the drive plate 2, the intermediate plate 3, and the driven plate 4 are rotatable relative to each other.
ドライブプレート2は、例えば、フライホイールを介して、エンジンのクランクシャフトに接続される。なお、ドライブプレート2はエンジンに限らず、モータのような他の駆動源、又は他の装置に接続されても良い。
The drive plate 2 is connected to the crankshaft of the engine via, for example, a flywheel. The drive plate 2 is not limited to the engine, and may be connected to another drive source such as a motor or another device.
クランクシャフトは、中心軸Axに沿って延びる。フライホイールは、例えば、径方向に広がる円盤状に形成される。エンジンがクランクシャフトを介してフライホイールを回転させることで、ドライブプレート2がフライホイールとともに回転させられる。すなわち、エンジンが生じさせる回転が、フライホイールを介してドライブプレート2に伝達される。
The crankshaft extends along the central axis Ax. The flywheel is formed, for example, in a disk shape extending in the radial direction. When the engine rotates the flywheel via the crankshaft, the drive plate 2 is rotated together with the flywheel. That is, the rotation generated by the engine is transmitted to the drive plate 2 via the flywheel.
ドライブプレート2は、中心軸Axに近い方から順に、ブッシュ21と、二つのディスクプレート22と、支持プレート24と、二つのライニング部25とを有する。支持プレート24は、例えば、クッションスプリングとも称され得る。ライニング部25は、例えば、摩擦材とも称され得る。
The drive plate 2 includes a bush 21, two disk plates 22, a support plate 24, and two lining portions 25 in order from the side closer to the central axis Ax. The support plate 24 may be referred to as a cushion spring, for example. The lining portion 25 can also be referred to as a friction material, for example.
ブッシュ21は、二つのボス部21aと、複数の係止部21bとを有する。ボス部21aは、中心軸Axに沿って延びる略円筒状に形成される。二つのボス部21aは、隙間を介して軸方向に並べられる。係止部21bは、二つのボス部21aの外周面から、径方向外側にそれぞれ突出する。
The bush 21 has two boss portions 21a and a plurality of locking portions 21b. The boss portion 21a is formed in a substantially cylindrical shape extending along the central axis Ax. The two boss portions 21a are arranged in the axial direction through a gap. The locking portion 21b protrudes radially outward from the outer peripheral surface of the two boss portions 21a.
図2は、第1の実施形態のディスクプレート22の一部を切り欠いてダンパ装置1の一例を示す正面図である。図2に示すように、ディスクプレート22は、径方向に広がる円盤状に形成される。二つのディスクプレート22は、内枠部22aと、外枠部22bと、二つの第1のフレーム部22cと、二つの第2のフレーム部22dとをそれぞれ有する。図2は、二つの第1のフレーム部21cのうち一つのみを示す。なお、第1のフレーム部22cと第2のフレーム部22dとの数はこれに限らない。
FIG. 2 is a front view showing an example of the damper device 1 by cutting out a part of the disk plate 22 of the first embodiment. As shown in FIG. 2, the disk plate 22 is formed in a disk shape that extends in the radial direction. The two disc plates 22 each have an inner frame portion 22a, an outer frame portion 22b, two first frame portions 22c, and two second frame portions 22d. FIG. 2 shows only one of the two first frame portions 21c. In addition, the number of the 1st frame part 22c and the 2nd frame part 22d is not restricted to this.
内枠部22aは、径方向に広がる円盤状に形成され、中心軸Axに沿って延びる嵌合孔22eが設けられる。内枠部22aに、スプライン部22fがさらに設けられる。スプライン部22fは、嵌合孔22eの内周面から径方向に延びる複数の溝によって形成される。
The inner frame portion 22a is formed in a disk shape extending in the radial direction, and is provided with a fitting hole 22e extending along the central axis Ax. A spline portion 22f is further provided on the inner frame portion 22a. The spline portion 22f is formed by a plurality of grooves extending in the radial direction from the inner peripheral surface of the fitting hole 22e.
図1に示すように、嵌合孔22eに、ブッシュ21の一方のボス部21aが嵌まる。ボス部21aから突出する係止部21bが、ディスクプレート22のスプライン部22fに嵌められる。これにより、ディスクプレート22がブッシュ21に取り付けられ、ディスクプレート22とブッシュ21とが中心軸Axまわりに一体的に回転可能となる。
As shown in FIG. 1, one boss portion 21a of the bush 21 is fitted into the fitting hole 22e. A locking portion 21 b protruding from the boss portion 21 a is fitted into the spline portion 22 f of the disc plate 22. As a result, the disc plate 22 is attached to the bush 21, and the disc plate 22 and the bush 21 can rotate integrally around the central axis Ax.
図2に示すように、外枠部22bは、間隔を介して内枠部22aを囲む円環状に形成される。第1のフレーム部22cと第2のフレーム部22dとが、内枠部22aの外周側と外枠部22bの内周側とを接続する。
As shown in FIG. 2, the outer frame portion 22b is formed in an annular shape surrounding the inner frame portion 22a with a gap therebetween. The first frame portion 22c and the second frame portion 22d connect the outer peripheral side of the inner frame portion 22a and the inner peripheral side of the outer frame portion 22b.
二つの第1のフレーム部22cは、内枠部22aから径方向に、互いに反対方向に延びる。二つの第2のフレーム部22dは、内枠部22aから径方向に、互いに反対方向に延びる。本実施形態において、第1のフレーム部22cが延びる方向と第2のフレーム部22dが延びる方向とは略直交するが、第1及び第2のフレーム部22c,22dが延びる方向はこれに限られない。
The two first frame portions 22c extend in the radial direction from the inner frame portion 22a in opposite directions. The two second frame portions 22d extend in the radial direction from the inner frame portion 22a in opposite directions. In the present embodiment, the direction in which the first frame portion 22c extends and the direction in which the second frame portion 22d extend are substantially orthogonal, but the direction in which the first and second frame portions 22c and 22d extend is limited to this. Absent.
内枠部22a、外枠部22b、第1のフレーム部22c、及び第2のフレーム部22dは、複数の開口部22gを形成する。開口部22gは、ディスクプレート22に覆われたダンパ装置1の内部を露出させる。
The inner frame portion 22a, the outer frame portion 22b, the first frame portion 22c, and the second frame portion 22d form a plurality of openings 22g. The opening 22g exposes the inside of the damper device 1 covered with the disk plate 22.
図1に示すように、二つのディスクプレート22は、軸方向に隙間を介して並んで配置される。二つのディスクプレート22は、軸方向に延びる第1の接続部材27によって互いに接続される。
As shown in FIG. 1, the two disk plates 22 are arranged side by side with a gap in the axial direction. The two disk plates 22 are connected to each other by a first connection member 27 extending in the axial direction.
第1の接続部材27の両端部は、二つのディスクプレート22に、例えばかしめによって固定される。第1の接続部材27は、二つのディスクプレート22が相対的に回転することを制限する。これにより、二つのディスクプレート22は、中心軸Axまわりに一体的に回転可能である。
Both ends of the first connecting member 27 are fixed to the two disc plates 22 by caulking, for example. The first connecting member 27 restricts relative rotation of the two disk plates 22. Thereby, the two disk plates 22 can rotate integrally around the central axis Ax.
二つのディスクプレート22は、略同一形状を有するが、異なる形状を有しても良い。二つのディスクプレート22の内枠部22a、外枠部22b、第1のフレーム部22c、及び第2のフレーム部22dは、軸方向に並んで配置される。このため、一方のディスクプレート22の開口部22gと、他方のディスクプレート22の開口部22gとは、互いに対応する位置に設けられる。
The two disc plates 22 have substantially the same shape, but may have different shapes. The inner frame portion 22a, the outer frame portion 22b, the first frame portion 22c, and the second frame portion 22d of the two disc plates 22 are arranged side by side in the axial direction. For this reason, the opening 22g of one disk plate 22 and the opening 22g of the other disk plate 22 are provided at positions corresponding to each other.
支持プレート24は、ディスクプレート22の外枠部22bより大きい円環状に形成される。支持プレート24の内周部分は、例えば第1の接続部材27やネジによって、一方のディスクプレート22の外枠部22bに取り付けられる。支持プレート24は、ディスクプレート22の外枠部22bから、径方向外側に張り出す。なお、支持プレート24は他の部分に取り付けられても良い。
The support plate 24 is formed in an annular shape larger than the outer frame portion 22b of the disk plate 22. The inner peripheral portion of the support plate 24 is attached to the outer frame portion 22b of one of the disk plates 22 by, for example, the first connecting member 27 or a screw. The support plate 24 projects outward in the radial direction from the outer frame portion 22 b of the disk plate 22. The support plate 24 may be attached to other parts.
ライニング部25は、例えば、間隔を介してディスクプレート22を囲む円環状に形成される。二つのライニング部25は、支持プレート24の外周部分において、軸方向における支持プレート24の両側に取り付けられる。二つのライニング部25は、フライホイールに接触する。
The lining portion 25 is formed in, for example, an annular shape surrounding the disc plate 22 with an interval. The two lining portions 25 are attached to both sides of the support plate 24 in the axial direction at the outer peripheral portion of the support plate 24. The two lining portions 25 are in contact with the flywheel.
フライホイールが回転すると、フライホイールとライニング部25との間の摩擦力により、ドライブプレート2が回転させられる。ダンパ装置1に作用するトルクが過剰になると、ライニング部25とフライホイールとの間で滑りが発生する。
When the flywheel rotates, the drive plate 2 is rotated by the frictional force between the flywheel and the lining portion 25. When the torque acting on the damper device 1 becomes excessive, slip occurs between the lining portion 25 and the flywheel.
中間プレート3は、軸方向において、二つのディスクプレート22の間に配置される。中間プレート3は、二つのプレート31を有する。二つのプレート31は、軸方向に隙間を介して並んで配置される。
The intermediate plate 3 is disposed between the two disk plates 22 in the axial direction. The intermediate plate 3 has two plates 31. The two plates 31 are arranged side by side with a gap in the axial direction.
図3は、第1の実施形態のドライブプレート2を省略してダンパ装置1を示す正面図である。図3に示すように、プレート31は、中間部33と、二つのアーム34とを有する。なお、アーム34の数は二つに限らない。
FIG. 3 is a front view showing the damper device 1 by omitting the drive plate 2 of the first embodiment. As shown in FIG. 3, the plate 31 has an intermediate portion 33 and two arms 34. The number of arms 34 is not limited to two.
中間部33は、径方向に広がる円盤状に形成され、中心軸Axに沿って延びる挿通孔33aが設けられる。図1に示すように、ドライブプレート2のブッシュ21のボス部21aが挿通孔33aに嵌められる。ボス部21aとプレート31とは、中心軸Axまわりに相対的に回転可能である。
The intermediate portion 33 is formed in a disk shape extending in the radial direction, and is provided with an insertion hole 33a extending along the central axis Ax. As shown in FIG. 1, the boss portion 21a of the bush 21 of the drive plate 2 is fitted into the insertion hole 33a. The boss portion 21a and the plate 31 are relatively rotatable around the central axis Ax.
挿通孔33aに嵌められたボス部21aは、プレート31が径方向に移動することを制限する。言い換えると、ブッシュ21のボス部21aは、プレート31を中心軸Axに合わせて配置(センタリング)する。
The boss portion 21a fitted in the insertion hole 33a restricts the plate 31 from moving in the radial direction. In other words, the boss portion 21a of the bush 21 arranges (centers) the plate 31 according to the central axis Ax.
図3に示すように、二つのアーム34は、中間部33から径方向に、互いに反対方向に延びる。図3において、二つのアーム34は、左上及び右下に延びる。径方向において、中心軸Axからアーム34の外周面までの長さは、中心軸Axからディスクプレート22の外枠部22bの外周面までの長さよりも短い。
As shown in FIG. 3, the two arms 34 extend from the intermediate portion 33 in the radial direction and in opposite directions. In FIG. 3, the two arms 34 extend to the upper left and lower right. In the radial direction, the length from the central axis Ax to the outer peripheral surface of the arm 34 is shorter than the length from the central axis Ax to the outer peripheral surface of the outer frame portion 22 b of the disk plate 22.
アーム34の先端部に、二つの張出部34aが設けられる。張出部34aは、アーム34の先端部から、周方向の両側に突出した部分である。言い換えると、二つの張出部34aは、アーム34の先端部から、周方向において互いに反対方向に突出する。
Two protruding portions 34 a are provided at the tip of the arm 34. The overhanging portion 34 a is a portion that protrudes from the distal end portion of the arm 34 to both sides in the circumferential direction. In other words, the two overhanging portions 34 a protrude from the distal end portion of the arm 34 in opposite directions in the circumferential direction.
図4は、第1の実施形態のダンパ装置1の一例の、図1と異なる位置における一部を示す断面図である。図4に示すように、二つのプレート31に、軸方向に延びる第2の接続部材36が取り付けられる。
FIG. 4 is a cross-sectional view showing a part of the example of the damper device 1 according to the first embodiment at a position different from that in FIG. As shown in FIG. 4, the second connection member 36 extending in the axial direction is attached to the two plates 31.
第2の接続部材36は、二つのプレート31を互いに接続する。第2の接続部材36の両端部は、二つのプレート31に、例えばかしめによって固定される。第2の接続部材36は、二つのプレート31が相対的に回転することを制限する。これにより、二つのプレート31は、中心軸Axまわりに一体的に回転可能である。
The second connecting member 36 connects the two plates 31 to each other. Both ends of the second connecting member 36 are fixed to the two plates 31 by, for example, caulking. The second connecting member 36 limits the relative rotation of the two plates 31. Thereby, the two plates 31 can rotate integrally around the central axis Ax.
二つのプレート31は、略同一形状を有するが、異なる形状を有しても良い。二つのプレート31の中間部33及びアーム34は、軸方向に並んで配置される。これにより、一方のプレート31のアーム34と、他方のプレート31のアーム34とは、互いに対応する位置に配置される。
The two plates 31 have substantially the same shape, but may have different shapes. The intermediate portion 33 and the arm 34 of the two plates 31 are arranged side by side in the axial direction. Thereby, the arm 34 of one plate 31 and the arm 34 of the other plate 31 are disposed at positions corresponding to each other.
ドリブンプレート4は、例えば、入力軸を介して、トランスミッションに接続される。なお、ドリブンプレート4はトランスミッションに限らず、モータのような他の装置に接続されても良い。図1に示すように、ドリブンプレート4は、内側ハブ41と、外側ハブ42と、スプリング43とを有する。
The driven plate 4 is connected to the transmission via, for example, an input shaft. The driven plate 4 is not limited to the transmission, and may be connected to another device such as a motor. As shown in FIG. 1, the driven plate 4 includes an inner hub 41, an outer hub 42, and a spring 43.
内側ハブ41は、ボス部41aと、複数の係止部41bとを有する。ボス部41aは、中心軸Axに沿って延びる略円筒状に形成される。ボス部41aの内側に入力軸が嵌められる。ボス部41aと入力軸との間で、例えばスプラインやキーを介して回転が伝達される。
The inner hub 41 has a boss portion 41a and a plurality of locking portions 41b. The boss portion 41a is formed in a substantially cylindrical shape extending along the central axis Ax. An input shaft is fitted inside the boss portion 41a. Rotation is transmitted between the boss portion 41a and the input shaft via, for example, a spline or a key.
内側ハブ41のボス部41aは、ドライブプレート2のブッシュ21のボス部21aの内側に嵌められる。内側ハブ41のボス部41aと、ブッシュ21のボス部21aとは、中心軸Axまわりに相対的に回転可能である。
The boss 41a of the inner hub 41 is fitted inside the boss 21a of the bush 21 of the drive plate 2. The boss portion 41a of the inner hub 41 and the boss portion 21a of the bush 21 are relatively rotatable around the central axis Ax.
複数の係止部41bは、ボス部41aの外周面から、径方向にそれぞれ突出する。係止部41bは、軸方向において、ドライブプレート2のブッシュ21の二つのボス部21aの間に配置される。
The plurality of locking portions 41b protrude in the radial direction from the outer peripheral surface of the boss portion 41a. The locking portion 41b is disposed between the two boss portions 21a of the bush 21 of the drive plate 2 in the axial direction.
外側ハブ42は、軸方向において、中間プレート3の二つのプレート31の間に配置される。なお、外側ハブ42はこれに限らず、二つのプレート31の外側に配置されても良い。
The outer hub 42 is disposed between the two plates 31 of the intermediate plate 3 in the axial direction. The outer hub 42 is not limited to this, and may be disposed outside the two plates 31.
図3に示すように、外側ハブ42は、中間部42aと、二つのアーム42bとを有する。図3は、内側ハブ41及びスプリング43を省略してドリブンプレート4を示す。なお、アーム42bの数は二つに限らない。
As shown in FIG. 3, the outer hub 42 has an intermediate portion 42a and two arms 42b. FIG. 3 shows the driven plate 4 with the inner hub 41 and the spring 43 omitted. The number of arms 42b is not limited to two.
中間部42aは、径方向に広がる円盤状に形成され、中心軸Axに沿って延びる挿通孔42cが設けられる。中間部42aに、スプライン部42dがさらに設けられる。スプライン部42dは、挿通孔42cの内周面から径方向に延びる複数の溝によって形成される。
The intermediate part 42a is formed in a disk shape extending in the radial direction, and is provided with an insertion hole 42c extending along the central axis Ax. A spline portion 42d is further provided in the intermediate portion 42a. The spline portion 42d is formed by a plurality of grooves extending in the radial direction from the inner peripheral surface of the insertion hole 42c.
図1に示すように、内側ハブ41のボス部41aは、外側ハブ42の挿通孔42cの内側に嵌められる。内側ハブ41のボス部41aと、外側ハブ42とは、中心軸Axまわりに相対的に回転可能である。
As shown in FIG. 1, the boss portion 41 a of the inner hub 41 is fitted inside the insertion hole 42 c of the outer hub 42. The boss 41a of the inner hub 41 and the outer hub 42 are relatively rotatable around the central axis Ax.
外側ハブ42のスプライン部42dに、内側ハブ41の係止部41bが嵌められる。周方向において、外側ハブ42のスプライン部42dの端部と、内側ハブ41の係止部41bの端部との間に隙間が形成される。これにより、内側ハブ41と外側ハブ42とは、所定の角度に亘って相対的に回転可能である。
The locking portion 41b of the inner hub 41 is fitted into the spline portion 42d of the outer hub 42. In the circumferential direction, a gap is formed between the end portion of the spline portion 42 d of the outer hub 42 and the end portion of the locking portion 41 b of the inner hub 41. Thereby, the inner side hub 41 and the outer side hub 42 are relatively rotatable over a predetermined angle.
内側ハブ41と外側ハブ42とが所定の角度を相対的に回転すると、周方向における外側ハブ42のスプライン部42dの端部と、内側ハブ41の係止部41bの端部とが接触する。これにより、内側ハブ41と外側ハブ42とのさらなる相対的な回転が制限される。
When the inner hub 41 and the outer hub 42 are relatively rotated by a predetermined angle, the end portion of the spline portion 42d of the outer hub 42 and the end portion of the locking portion 41b of the inner hub 41 in the circumferential direction come into contact with each other. This limits further relative rotation between the inner hub 41 and the outer hub 42.
スプリング43は、コイル状の圧縮バネである。スプリング43は、周方向における、外側ハブ42のスプライン部42dの端部と、内側ハブ41の係止部41bの端部との間の隙間に配置される。言い換えると、スプリング43は、周方向において、内側ハブ41と外側ハブ42との間に介在する。
The spring 43 is a coiled compression spring. The spring 43 is disposed in a gap between the end portion of the spline portion 42 d of the outer hub 42 and the end portion of the locking portion 41 b of the inner hub 41 in the circumferential direction. In other words, the spring 43 is interposed between the inner hub 41 and the outer hub 42 in the circumferential direction.
スプリング43は、内側ハブ41と外側ハブ42とが中心軸Axまわりに相対的に回転すると、周方向における、外側ハブ42のスプライン部42dの端部と、内側ハブ41の係止部41bの端部とによって圧縮される。スプリング43は、中心軸Axまわりの一方向に相対的に回転した内側ハブ41と外側ハブ42とに、反対方向に回転する力を作用させる。
When the inner hub 41 and the outer hub 42 rotate relative to each other around the central axis Ax, the spring 43 rotates in the circumferential direction with the end of the spline portion 42d of the outer hub 42 and the end of the locking portion 41b of the inner hub 41. Compressed by part. The spring 43 applies a force that rotates in the opposite direction to the inner hub 41 and the outer hub 42 that are relatively rotated in one direction around the central axis Ax.
図3に示すように、外側ハブ42の二つのアーム42bは、中間部42aから径方向に、互いに反対方向に延びる。図3において、二つのアーム42bは、右上及び左下に延びる。径方向において、中心軸Axからアーム42bの外周面までの長さは、中心軸Axからディスクプレート22の外枠部22bの外周面までの長さよりも短い。
As shown in FIG. 3, the two arms 42b of the outer hub 42 extend radially from the intermediate portion 42a in opposite directions. In FIG. 3, the two arms 42b extend to the upper right and lower left. In the radial direction, the length from the central axis Ax to the outer peripheral surface of the arm 42 b is shorter than the length from the central axis Ax to the outer peripheral surface of the outer frame portion 22 b of the disk plate 22.
図2に示すように、ドライブプレート2及びドリブンプレート4に外力が作用しない場合、外側ハブ42のアーム42bは、軸方向において、ドライブプレート2のディスクプレート22の第1のフレーム部22cに重ねられる。なお、外側ハブ42のアーム42bと、ディスクプレート22の第1のフレーム部22cとの位置はこれに限られない。
As shown in FIG. 2, when no external force is applied to the drive plate 2 and the driven plate 4, the arm 42 b of the outer hub 42 is overlapped with the first frame portion 22 c of the disk plate 22 of the drive plate 2 in the axial direction. . The positions of the arm 42b of the outer hub 42 and the first frame portion 22c of the disk plate 22 are not limited to this.
図3に示すように、アーム42bの先端部に、二つの張出部42eが設けられる。張出部42eは、アーム42bの先端部から、周方向の両側に突出した部分である。言い換えると、二つの張出部42eは、アーム42bの先端部から、周方向において互いに反対方向に突出する。
As shown in FIG. 3, two protruding portions 42e are provided at the tip of the arm 42b. The overhanging portion 42e is a portion that protrudes from the distal end portion of the arm 42b to both sides in the circumferential direction. In other words, the two overhang portions 42e protrude in opposite directions from each other in the circumferential direction from the tip portion of the arm 42b.
ダンパ装置1は、四つのトーションスプリング5と、四つの第1のシート6と、四つの第2のシート7と、四つのクッション8とをさらに有する。なお、トーションスプリング5と、第1及び第2のシート6,7と、クッション8との数はこれに限らない。
The damper device 1 further includes four torsion springs 5, four first seats 6, four second seats 7, and four cushions 8. The number of the torsion springs 5, the first and second seats 6, 7 and the cushions 8 is not limited to this.
図2に示すように、トーションスプリング5は、コイル状の圧縮バネ(コイルスプリング)である。トーションスプリング5は、周方向において、ドリブンプレート4の外側ハブ42のアーム42bと、中間プレート3のプレート31のアーム34との間に位置する。同時に、トーションスプリング5は、ドライブプレート2のディスクプレート22の第1のフレーム部22cと、中間プレート3のプレート31のアーム34との間にも位置する。
As shown in FIG. 2, the torsion spring 5 is a coiled compression spring (coil spring). The torsion spring 5 is located between the arm 42 b of the outer hub 42 of the driven plate 4 and the arm 34 of the plate 31 of the intermediate plate 3 in the circumferential direction. At the same time, the torsion spring 5 is also positioned between the first frame portion 22 c of the disk plate 22 of the drive plate 2 and the arm 34 of the plate 31 of the intermediate plate 3.
第1のシート6と第2のシート7とは、例えば、合成樹脂材料によって作られる。なお、第1のシート6及び第2のシート7はそれぞれ、他の材料によって作られても良い。
The first sheet 6 and the second sheet 7 are made of, for example, a synthetic resin material. Each of the first sheet 6 and the second sheet 7 may be made of other materials.
四つの第1のシート6は、ドライブプレート2の二つの第1のフレーム部22cの周方向両側に、取り外し可能に支持される。また、図3に示すように、四つの第1のシート6は、ドリブンプレート4の二つのアーム42bの周方向両側にも、それぞれ取り外し可能に支持される。第1のシート6は、外側ハブ42のアーム42bに設けられた張出部42eによって支持される。四つの第1のシート6はそれぞれ、支持壁61と、二つの延壁62と、凸部63と、覆部64とを有する。
The four first seats 6 are removably supported on both sides in the circumferential direction of the two first frame portions 22c of the drive plate 2. As shown in FIG. 3, the four first sheets 6 are also detachably supported on both circumferential sides of the two arms 42 b of the driven plate 4. The first sheet 6 is supported by an overhanging portion 42 e provided on the arm 42 b of the outer hub 42. Each of the four first sheets 6 includes a support wall 61, two extending walls 62, a convex portion 63, and a cover portion 64.
支持壁61は、周方向における、ドリブンプレート4のアーム42bの一方の端部を覆う。支持壁61は、トーションスプリング5の一方の端部5aを支持する。すなわち、支持壁61は、アーム42bとトーションスプリング5との間に介在する。
The support wall 61 covers one end of the arm 42b of the driven plate 4 in the circumferential direction. The support wall 61 supports one end 5 a of the torsion spring 5. That is, the support wall 61 is interposed between the arm 42 b and the torsion spring 5.
二つの延壁62は、軸方向に隙間を介して並んで配置され、支持壁61から周方向にそれぞれ延びる。軸方向において、二つの延壁62の間に、ドリブンプレート4のアーム42bが配置される。さらに、軸方向において、ドライブプレート2の二つのディスクプレート22の第1のフレーム部22cの間に、二つの延壁62が配置される。これにより、ドリブンプレート4のアーム42bと、ドライブプレート2の第1のフレーム部22cとは、第1のシート6が軸方向に移動することを制限する。
The two extending walls 62 are arranged side by side with a gap in the axial direction and extend from the support wall 61 in the circumferential direction. In the axial direction, the arm 42 b of the driven plate 4 is disposed between the two extending walls 62. Further, two extending walls 62 are disposed between the first frame portions 22 c of the two disk plates 22 of the drive plate 2 in the axial direction. Thus, the arm 42b of the driven plate 4 and the first frame portion 22c of the drive plate 2 restrict the first seat 6 from moving in the axial direction.
支持壁61に、窪み65が設けられる。窪み65は、周方向に開口する有底の穴であり、軸方向において二つの延壁62の間に位置する。窪み65に、ドリブンプレート4の張出部42eが嵌められる。これにより、第1のシート6は、ドリブンプレート4の張出部42eによって支持される。
A depression 65 is provided in the support wall 61. The recess 65 is a bottomed hole that opens in the circumferential direction, and is located between the two extending walls 62 in the axial direction. The overhang portion 42 e of the driven plate 4 is fitted in the recess 65. Thereby, the first sheet 6 is supported by the overhanging portion 42 e of the driven plate 4.
例えば、ドリブンプレート4の張出部42eに設けられた凸部42fが、窪み65に挿入される。凸部42fが窪み65の内面に接触することで、ドリブンプレート4の張出部42eが第1のシート6を支持する。
For example, the convex portion 42 f provided on the protruding portion 42 e of the driven plate 4 is inserted into the recess 65. The protruding portion 42 e of the driven plate 4 supports the first sheet 6 by the convex portion 42 f contacting the inner surface of the recess 65.
凸部42f及び窪み65を挟んだ径方向内側及び外側の少なくとも一方に、隙間Gが形成される。すなわち、ドリブンプレート4が第1のシート6を支持した状態で、ドリブンプレート4と第1のシート6との間に隙間(空間)Gが設けられる。
A gap G is formed on at least one of the radially inner side and the outer side across the convex portion 42f and the depression 65. That is, a gap (space) G is provided between the driven plate 4 and the first sheet 6 in a state where the driven plate 4 supports the first sheet 6.
隙間Gが設けられるため、第1のシート6は、ドリブンプレート4に対して、軸方向と直交する面内で回転(揺動)可能である。すなわち、図3のように軸方向に第1のシート6を見た場合、第1のシート6は、中心軸Axと平行に延びる回転中心まわりに回転することができる。第1のシート6の回転中心は、例えば、凸部42fと窪み65との接触点であり、第1のシート6の回転に伴って位置を変え得る。言い換えると、第1のシート6は、中心軸Axと平行な回転中心の位置を変えながら、ドリブンプレート4に対して回転可能である。なお、第1のシート6の回転中心は、一定の位置にあっても良い。
Since the gap G is provided, the first sheet 6 can rotate (swing) in a plane perpendicular to the axial direction with respect to the driven plate 4. That is, when the first sheet 6 is viewed in the axial direction as shown in FIG. 3, the first sheet 6 can rotate around the rotation center extending parallel to the central axis Ax. The rotation center of the first sheet 6 is, for example, a contact point between the convex portion 42 f and the recess 65, and the position can be changed with the rotation of the first sheet 6. In other words, the first sheet 6 can rotate with respect to the driven plate 4 while changing the position of the rotation center parallel to the central axis Ax. The rotation center of the first sheet 6 may be at a fixed position.
図2に示すように、ドライブプレート2の第1のフレーム部22cに、収容部22hがそれぞれ形成される。収容部22hは、周方向に開口する窪みである。収容部22hに、第1のシート6の延壁62がそれぞれ嵌められる。
As shown in FIG. 2, storage portions 22h are formed in the first frame portion 22c of the drive plate 2, respectively. The accommodating portion 22h is a recess that opens in the circumferential direction. The extending walls 62 of the first sheet 6 are respectively fitted in the accommodating portions 22h.
第1のシート6の延壁62は、収容部22hの内面に接触する。これにより、第1のシート6は、ドライブプレート2の第1のフレーム部22cによって、軸方向と直交する面内で回転可能に支持される。
The extending wall 62 of the first sheet 6 is in contact with the inner surface of the accommodating portion 22h. Thus, the first seat 6 is supported by the first frame portion 22c of the drive plate 2 so as to be rotatable in a plane orthogonal to the axial direction.
第1のシート6は、ドリブンプレート4及びドライブプレート2が第1のシート6を支持する部分を中心に、中心軸Axに近づく方向又は中心軸Axから遠ざかる方向に回転可能である。第1のシート6は、所定の範囲内で回転可能である。すなわち、第1のシート6は、隙間Gが無くなるまで回転すると、ドリブンプレート4又はドライブプレート2に当接し、さらなる回転を制限される。
The first sheet 6 is rotatable around the portion where the driven plate 4 and the drive plate 2 support the first sheet 6 in the direction approaching the center axis Ax or away from the center axis Ax. The first sheet 6 can be rotated within a predetermined range. That is, when the first sheet 6 rotates until the gap G disappears, the first sheet 6 comes into contact with the driven plate 4 or the drive plate 2 and further rotation is restricted.
第1のシート6は、ドリブンプレート4とドライブプレート2とが相対的に回転すると、ドリブンプレート4及びドライブプレート2のいずれか一方に支持される。例えば、ドリブンプレート4とドライブプレート2が相対的に回転すると、ドリブンプレート4が図2の反時計回り方向に移動する。この場合、周方向における一方の第1のシート6Aはドリブンプレート4に支持されるとともに、ドライブプレート2から外れる。一方、周方向における他方の第1のシート6Bはドライブプレート2に支持されるとともに、ドリブンプレート4から外れる。
The first sheet 6 is supported by one of the driven plate 4 and the drive plate 2 when the driven plate 4 and the drive plate 2 are relatively rotated. For example, when the driven plate 4 and the drive plate 2 rotate relatively, the driven plate 4 moves in the counterclockwise direction of FIG. In this case, one first sheet 6 </ b> A in the circumferential direction is supported by the driven plate 4 and detached from the drive plate 2. On the other hand, the other first sheet 6 </ b> B in the circumferential direction is supported by the drive plate 2 and detached from the driven plate 4.
第1のシート6Aは、ドライブプレート2の第1のフレーム部22c及びドリブンプレート4のアーム42bの、反時計回り方向に位置する第1のシート6である。第1のシート6Bは、ドライブプレート2の第1のフレーム部22c及びドリブンプレート4のアーム42bの、時計回り方向に位置する第1のシート6である。
The first sheet 6A is the first sheet 6 located in the counterclockwise direction of the first frame portion 22c of the drive plate 2 and the arm 42b of the driven plate 4. The first sheet 6B is the first sheet 6 positioned in the clockwise direction of the first frame portion 22c of the drive plate 2 and the arm 42b of the driven plate 4.
図3に示すように、凸部63は、支持壁61から、略周方向に突出する。例えば、凸部63は、中間プレート3のアーム34に向かって突出する。凸部63は、略円柱状に形成されるが、他の形に形成されても良い。
As shown in FIG. 3, the convex part 63 protrudes from the support wall 61 in the substantially circumferential direction. For example, the convex portion 63 projects toward the arm 34 of the intermediate plate 3. The convex portion 63 is formed in a substantially cylindrical shape, but may be formed in other shapes.
凸部63は、トーションスプリング5の一方の端部5aから、トーションスプリング5の内部に挿入される。言い換えると、凸部63は、トーションスプリング5の内部に配置される。これにより、凸部63は、トーションスプリング5が径方向及び軸方向に移動することを制限する。
The convex portion 63 is inserted into the torsion spring 5 from one end portion 5 a of the torsion spring 5. In other words, the convex portion 63 is disposed inside the torsion spring 5. Thereby, the convex part 63 restrict | limits that the torsion spring 5 moves to a radial direction and an axial direction.
覆部64は、支持壁61から、周方向に延びる。覆部64は、二つの延壁62の反対方向に延びる。覆部64は、トーションスプリング5の一部を、径方向外側から覆う。覆部64は、トーションスプリング5が遠心力により径方向外側に撓むと、当該トーションスプリング5に接触し、トーションスプリング5が径方向外側に移動することを制限する。
The cover 64 extends from the support wall 61 in the circumferential direction. The covering portion 64 extends in the direction opposite to the two extending walls 62. The cover part 64 covers a part of the torsion spring 5 from the radially outer side. When the torsion spring 5 bends radially outward by centrifugal force, the cover portion 64 comes into contact with the torsion spring 5 and restricts the torsion spring 5 from moving radially outward.
四つの第2のシート7は、中間プレート3の二つのアーム34の周方向両側に、それぞれ支持される。四つの第2のシート7はそれぞれ、支持壁71と、凸部72とを有する。
The four second sheets 7 are respectively supported on both sides in the circumferential direction of the two arms 34 of the intermediate plate 3. Each of the four second sheets 7 includes a support wall 71 and a convex portion 72.
支持壁71は、周方向における、中間プレート3のアーム34の一方の端部を覆う。支持壁71は、トーションスプリング5の他方の端部5bを支持する。すなわち、支持壁71は、アーム34とトーションスプリング5との間に介在する。
The support wall 71 covers one end of the arm 34 of the intermediate plate 3 in the circumferential direction. The support wall 71 supports the other end 5 b of the torsion spring 5. That is, the support wall 71 is interposed between the arm 34 and the torsion spring 5.
支持壁71は、介在部71aと、二つの側部71bとを有する。介在部71aと二つの側部71bとは、一体に形成される。軸方向において、介在部71aは、二つの側部71bの間に位置する。
The support wall 71 has an interposition part 71a and two side parts 71b. The interposition part 71a and the two side parts 71b are integrally formed. In the axial direction, the interposition part 71a is located between the two side parts 71b.
介在部71aは、軸方向において、中間プレート3の二つのプレート31のアーム34の間に位置する。これにより、中間プレート3の二つのプレート31のアーム34は、第2のシート7が軸方向に移動することを制限する。
The interposition part 71a is located between the arms 34 of the two plates 31 of the intermediate plate 3 in the axial direction. Thereby, the arms 34 of the two plates 31 of the intermediate plate 3 restrict the movement of the second sheet 7 in the axial direction.
二つの側部71bは、軸方向において、中間プレート3の二つのプレート31のアーム34と略同一位置に配置される。二つの側部71bにそれぞれ、凹部74が設けられる。凹部74は、軸方向に開口するとともに、周方向においてアーム34に向かって開口する切欠きである。凹部74に中間プレート3の張出部34aが嵌められる。これにより、第2のシート7は、中間プレート3の張出部34aに支持される。
The two side portions 71b are arranged at substantially the same position as the arms 34 of the two plates 31 of the intermediate plate 3 in the axial direction. Concave portions 74 are provided in the two side portions 71b, respectively. The recess 74 is a notch that opens in the axial direction and opens toward the arm 34 in the circumferential direction. The overhanging portion 34 a of the intermediate plate 3 is fitted into the recess 74. As a result, the second sheet 7 is supported by the overhanging portion 34 a of the intermediate plate 3.
例えば、アーム34の張出部34aに設けられた突起部34bが、凹部74に嵌められる。突起部34bが凹部74の縁に接触することで、アーム34の張出部34aが第2のシート7を支持する。突起部34bは、爪型に形成され、第2のシート7が周方向に移動することを制限する。
For example, the protrusion 34 b provided on the overhang 34 a of the arm 34 is fitted into the recess 74. The protruding portion 34 b contacts the edge of the recess 74, so that the overhang portion 34 a of the arm 34 supports the second sheet 7. The protrusion 34b is formed in a claw shape and restricts the movement of the second sheet 7 in the circumferential direction.
突起部34bを挟んだ径方向の内側及び外側の少なくとも一方に、隙間(空間)Gが形成される。すなわち、アーム34が第2のシート7を支持した状態で、アーム34と第2のシート7との間に隙間Gが設けられる。
A gap (space) G is formed on at least one of the inner side and the outer side in the radial direction across the protrusion 34b. That is, the gap G is provided between the arm 34 and the second sheet 7 with the arm 34 supporting the second sheet 7.
隙間Gが設けられるため、第2のシート7は、アーム34に対して、中心軸Axと直交する面内で回転(揺動)可能である。すなわち、図3のように軸方向に第2のシート7を見た場合、第2のシート7は、中心軸Axと平行に延びる回転中心まわりに回転することができる。第2のシート7の回転中心は、例えば、突起部34bと凹部74との接触点であり、第2のシート7の回転に伴って位置を変え得る。言い換えると、第2のシート7は、中心軸Axと平行な回転中心の位置を変えながら、中間プレート3に対して回転可能である。なお、第2のシート7の回転中心は、一定の位置にあっても良い。
Since the gap G is provided, the second sheet 7 can rotate (swing) in a plane perpendicular to the central axis Ax with respect to the arm 34. That is, when the second sheet 7 is viewed in the axial direction as shown in FIG. 3, the second sheet 7 can rotate around the rotation center extending parallel to the central axis Ax. The rotation center of the second sheet 7 is, for example, a contact point between the protrusion 34 b and the recess 74, and the position can be changed as the second sheet 7 rotates. In other words, the second sheet 7 is rotatable with respect to the intermediate plate 3 while changing the position of the rotation center parallel to the central axis Ax. Note that the rotation center of the second sheet 7 may be at a fixed position.
第2のシート7は、中間プレート3が第2のシート7を支持する部分を中心に、中心軸Axに近づく方向又は中心軸Axから遠ざかる方向に回転可能である。第2のシート7は、所定の範囲内で回転可能である。すなわち、第2のシート7は、隙間Gが無くなるまで回転すると、中間プレート3に当接し、さらなる回転を制限される。
The second sheet 7 is rotatable around the portion where the intermediate plate 3 supports the second sheet 7 in a direction approaching the center axis Ax or away from the center axis Ax. The second sheet 7 is rotatable within a predetermined range. That is, when the second sheet 7 rotates until the gap G disappears, the second sheet 7 comes into contact with the intermediate plate 3 and further rotation is restricted.
第2のシート7の凸部72は、支持壁71から、略周方向に突出する。本実施形態において、第2のシート7の凸部72は、第1のシート6に向かって突出する。さらに、第1のシート6の凸部63は、第2のシート7に向かって突出する。凸部72は、略円柱状に形成されるが、他の形に形成されても良い。
The convex part 72 of the 2nd sheet | seat 7 protrudes from the support wall 71 in the substantially circumferential direction. In the present embodiment, the convex portion 72 of the second sheet 7 protrudes toward the first sheet 6. Further, the convex portion 63 of the first sheet 6 protrudes toward the second sheet 7. The convex portion 72 is formed in a substantially cylindrical shape, but may be formed in other shapes.
凸部72は、トーションスプリング5の他方の端部5bから、トーションスプリング5の内部に挿入される。言い換えると、凸部72は、トーションスプリング5の内部に配置される。これにより、凸部72は、トーションスプリング5が径方向及び軸方向に移動することを制限する。
The convex portion 72 is inserted into the torsion spring 5 from the other end portion 5 b of the torsion spring 5. In other words, the convex portion 72 is disposed inside the torsion spring 5. Thereby, the convex part 72 restrict | limits that the torsion spring 5 moves to a radial direction and an axial direction.
トーションスプリング5は、周方向において、ドリブンプレート4及びドライブプレート2に支持される第1のシート6と、中間プレート3に支持される第2のシート7との間に介在する。このため、第1のシート6は、ドリブンプレート4及びドライブプレート2と、トーションスプリング5との間に介在する。また、第2のシート7は、中間プレート3とトーションスプリング5との間に介在する。
The torsion spring 5 is interposed between the first sheet 6 supported by the driven plate 4 and the drive plate 2 and the second sheet 7 supported by the intermediate plate 3 in the circumferential direction. For this reason, the first sheet 6 is interposed between the driven plate 4 and the drive plate 2 and the torsion spring 5. The second sheet 7 is interposed between the intermediate plate 3 and the torsion spring 5.
ドリブンプレート4、中間プレート3、及びドライブプレート2が相対的に回転すると、第1及び第2のシート6,7に支持されたトーションスプリング5が圧縮され、弾性変形する。以下、ドリブンプレート4がドライブプレート2に対して図2の時計回り方向に回転する場合について説明する。当該時計回り方向は、回転方向の一方側の一例である。
When the driven plate 4, the intermediate plate 3, and the drive plate 2 rotate relatively, the torsion springs 5 supported by the first and second sheets 6 and 7 are compressed and elastically deformed. Hereinafter, the case where the driven plate 4 rotates in the clockwise direction of FIG. The clockwise direction is an example of one side of the rotation direction.
以下の説明において、四つのトーションスプリング5のうち二つを第1のトーションスプリング51と称し、四つのトーションスプリング5のうち他の二つを第2のトーションスプリング52と称する。第1のトーションスプリング51は、第1のコイルスプリングの一例である。第2のトーションスプリング52は、第2のコイルスプリングの一例である。第1のトーションスプリング51と第2のトーションスプリング52とは、周方向に交互に配置される。
In the following description, two of the four torsion springs 5 are referred to as first torsion springs 51, and the other two of the four torsion springs 5 are referred to as second torsion springs 52. The first torsion spring 51 is an example of a first coil spring. The second torsion spring 52 is an example of a second coil spring. The first torsion springs 51 and the second torsion springs 52 are alternately arranged in the circumferential direction.
また、以下の説明において、四つの第2のシート7のうち二つを第2のシート7Aと称し、四つの第2のシート7のうち他の二つを第2のシート7Bと称する。第2のシート7Aは、中間プレート3の反時計回り方向に位置する。第2のシート7Bは、中間プレート3の時計回り方向に位置する。
In the following description, two of the four second sheets 7 are referred to as second sheets 7A, and the other two of the four second sheets 7 are referred to as second sheets 7B. The second sheet 7A is located in the counterclockwise direction of the intermediate plate 3. The second sheet 7B is positioned in the clockwise direction of the intermediate plate 3.
第1のトーションスプリング51は、回転するドリブンプレート4のアーム42bと、当該ドリブンプレート4が近づく中間プレート3のアーム34との間に位置する。このため、第1のトーションスプリング51は、第1のシート6Bと第2のシート7Aとの間に位置する。
The first torsion spring 51 is positioned between the arm 42b of the driven plate 4 that rotates and the arm 34 of the intermediate plate 3 that the driven plate 4 approaches. For this reason, the first torsion spring 51 is located between the first sheet 6B and the second sheet 7A.
第2のトーションスプリング52は、中間プレート3のアーム34と、中間プレート3が近づくドライブプレート2の第1のフレーム部22cとの間に位置する。このため、第2のトーションスプリング52は、第1のシート6Aと第2のシート7Bとの間に位置する。
The second torsion spring 52 is located between the arm 34 of the intermediate plate 3 and the first frame portion 22c of the drive plate 2 that the intermediate plate 3 approaches. For this reason, the second torsion spring 52 is located between the first sheet 6A and the second sheet 7B.
例えば、ドリブンプレート4が中間プレート3に対して上記時計回り方向に相対的に回転することにより、中心軸Axまわりの中間プレート3とドリブンプレート4との間の角度θ1が小さくなる。これにより、ドリブンプレート4に支持された第1のシート6Bと中間プレート3に支持された第2のシート7Aとの間の距離が小さくなり、第1のシート6Bと第2のシート7Aとに支持された第1のトーションスプリング51が弾性的に圧縮される。圧縮された第1のトーションスプリング51は、中間プレート3とドリブンプレート4との間の角度を大きくするよう、中間プレート3とドリブンプレート4とを押す。
For example, when the driven plate 4 rotates relative to the intermediate plate 3 in the clockwise direction, the angle θ1 between the intermediate plate 3 and the driven plate 4 around the central axis Ax decreases. As a result, the distance between the first sheet 6B supported by the driven plate 4 and the second sheet 7A supported by the intermediate plate 3 is reduced, and the first sheet 6B and the second sheet 7A are reduced. The supported first torsion spring 51 is elastically compressed. The compressed first torsion spring 51 pushes the intermediate plate 3 and the driven plate 4 so as to increase the angle between the intermediate plate 3 and the driven plate 4.
さらに、中間プレート3がドライブプレート2に対して上記時計回り方向に相対的に回転することにより、中心軸Axまわりのドライブプレート2と中間プレート3との間の角度θ2が小さくなる。これにより、ドライブプレート2に支持された第1のシート6Aと中間プレート3に支持された第2のシート7Bとの間の距離が小さくなり、第1のシート6Aと第2のシート7Bとに支持された第2のトーションスプリング52が弾性的に圧縮される。圧縮された第2のトーションスプリング52は、ドライブプレート2と中間プレート3との間の角度を大きくするよう、ドライブプレート2と中間プレート3とを押す。
Furthermore, when the intermediate plate 3 rotates relative to the drive plate 2 in the clockwise direction, the angle θ2 between the drive plate 2 and the intermediate plate 3 around the central axis Ax becomes small. As a result, the distance between the first sheet 6A supported by the drive plate 2 and the second sheet 7B supported by the intermediate plate 3 is reduced, and the first sheet 6A and the second sheet 7B are reduced. The supported second torsion spring 52 is elastically compressed. The compressed second torsion spring 52 pushes the drive plate 2 and the intermediate plate 3 so as to increase the angle between the drive plate 2 and the intermediate plate 3.
ドライブプレート2とドリブンプレート4とに外力が作用しない場合、四つのトーションスプリング5によって、中心軸Axまわりのドライブプレート2と中間プレート3との間の角度θ2が一定に保たれる。同様に、中間プレート3とドリブンプレート4との間の角度θ1が一定に保たれる。このとき、中間プレート3のアーム34が延びる方向と、ドリブンプレート4のアーム42bが延びる方向とは略直交する。なお、それぞれのアーム34,42bが延びる方向はこれに限らない。
When no external force acts on the drive plate 2 and the driven plate 4, the angle θ 2 between the drive plate 2 and the intermediate plate 3 around the central axis Ax is kept constant by the four torsion springs 5. Similarly, the angle θ1 between the intermediate plate 3 and the driven plate 4 is kept constant. At this time, the direction in which the arm 34 of the intermediate plate 3 extends and the direction in which the arm 42b of the driven plate 4 extends are substantially orthogonal. The direction in which the arms 34 and 42b extend is not limited to this.
トーションスプリング5は、第1のシート6をドライブプレート2及びドリブンプレート4に向かって押す。これにより、第1のシート6は、ドライブプレート2及びドリブンプレート4の少なくとも一方によって支持される。同様に、トーションスプリング5は、第2のシート7を中間プレート3に向かって押す。これにより、第2のシート7は、中間プレート3によって支持される。
The torsion spring 5 pushes the first sheet 6 toward the drive plate 2 and the driven plate 4. Thereby, the first sheet 6 is supported by at least one of the drive plate 2 and the driven plate 4. Similarly, the torsion spring 5 pushes the second sheet 7 toward the intermediate plate 3. As a result, the second sheet 7 is supported by the intermediate plate 3.
トーションスプリング5は、回転可能な第1のシート6及び第2のシート7を押す。トーションスプリング5の弾性力により、ドライブプレート2及びドリブンプレート4に外力が作用しない場合、第1のシート6の支持壁61と第2のシート7の支持壁71とは、略平行に保たれる。
The torsion spring 5 pushes the rotatable first sheet 6 and second sheet 7. When the external force does not act on the drive plate 2 and the driven plate 4 due to the elastic force of the torsion spring 5, the support wall 61 of the first sheet 6 and the support wall 71 of the second sheet 7 are kept substantially parallel. .
上述のように、ダンパ装置1のドライブプレート2は、フライホイールを介してエンジンのクランクシャフトに接続される。ドリブンプレート4は、入力軸を介してトランスミッションに接続される。エンジンが駆動することによってフライホイールに伝達されるトルクは、例えば、ドライブプレート2から、第1のシート6、トーションスプリング5、第2のシート7、中間プレート3、第2のシート7、トーションスプリング5、及び第1のシート6を通って、ドリブンプレート4に伝達される。ドリブンプレート4は、当該トルクを、入力軸を通してトランスミッションに伝達する。
As described above, the drive plate 2 of the damper device 1 is connected to the crankshaft of the engine via the flywheel. The driven plate 4 is connected to the transmission via an input shaft. The torque transmitted to the flywheel when the engine is driven is, for example, from the drive plate 2 to the first seat 6, the torsion spring 5, the second seat 7, the intermediate plate 3, the second seat 7, and the torsion spring. 5 and the first sheet 6 are transmitted to the driven plate 4. The driven plate 4 transmits the torque to the transmission through the input shaft.
エンジンのクランクシャフトの回転速度は、ドライバーの操作やエンジンの行程によって変動する。このようなクランクシャフトの回転速度の変化により、入力軸の回転速度がクランクシャフトの回転速度よりも速くなる場合がある。この場合、トルクは、例えば、ドリブンプレート4から、第1のシート6、トーションスプリング5、第2のシート7、中間プレート3、第2のシート7、トーションスプリング5、及び第1のシート6を通って、ドライブプレート2に伝達され得る。
¡The rotation speed of the engine crankshaft varies depending on the driver's operation and engine stroke. Due to such a change in the rotational speed of the crankshaft, the rotational speed of the input shaft may become faster than the rotational speed of the crankshaft. In this case, the torque is, for example, from the driven plate 4 to the first sheet 6, the torsion spring 5, the second sheet 7, the intermediate plate 3, the second sheet 7, the torsion spring 5, and the first sheet 6. And can be transmitted to the drive plate 2.
ドライブプレート2とドリブンプレート4との間のトルクの伝達経路において、第1のトーションスプリング51と第2のトーションスプリング52とが直列に接続される。直列に接続された二つのバネのバネ定数は、計算上、並列に接続された二つのバネのバネ定数の四分の一となる。このため、第1のトーションスプリング51と第2のトーションスプリング52とを直列に接続したダンパ装置1の捩れ剛性は、第1のトーションスプリング51と第2のトーションスプリング52とを並列に接続した場合の捩れ剛性よりも低くなり得る。
In the torque transmission path between the drive plate 2 and the driven plate 4, the first torsion spring 51 and the second torsion spring 52 are connected in series. The spring constant of two springs connected in series is calculated to be a quarter of the spring constant of two springs connected in parallel. For this reason, the torsional rigidity of the damper device 1 in which the first torsion spring 51 and the second torsion spring 52 are connected in series is obtained when the first torsion spring 51 and the second torsion spring 52 are connected in parallel. It can be lower than the torsional rigidity.
本実施形態において、第1のトーションスプリング51と第2のトーションスプリング52とは、略同一のバネ定数を有する。しかし、第1のトーションスプリング51と第2のトーションスプリング52とが異なるバネ定数を有することで、ダンパ装置1が捩れ角に応じて変化する複数の捩れ剛性を有しても良い。
In the present embodiment, the first torsion spring 51 and the second torsion spring 52 have substantially the same spring constant. However, since the first torsion spring 51 and the second torsion spring 52 have different spring constants, the damper device 1 may have a plurality of torsional stiffnesses that change according to the torsion angle.
四つのクッション8はそれぞれ、トーションスプリング5の中に配置され、第1のシート6と第2のシート7との間に位置する。四つのクッション8は、二つのクッション8Aと、二つのクッション8Bとを含む。
Each of the four cushions 8 is disposed in the torsion spring 5 and is positioned between the first seat 6 and the second seat 7. The four cushions 8 include two cushions 8A and two cushions 8B.
クッション8Aは、第1のトーションスプリング51の中に収容され、第1のシート6Bと第2のシート7Aとの間に位置する。クッション8Bは、第2のトーションスプリング52の中に収容され、第1のシート6Aと第2のシート7Bとの間に位置する。
The cushion 8A is accommodated in the first torsion spring 51 and is positioned between the first seat 6B and the second seat 7A. The cushion 8B is accommodated in the second torsion spring 52 and is positioned between the first seat 6A and the second seat 7B.
図5は、第1の実施形態のクッション8の一例を示す断面図である。図5に示すように、クッション8は、クッション材81と、第1のガイド82と、第2のガイド83とを有する。
FIG. 5 is a cross-sectional view showing an example of the cushion 8 according to the first embodiment. As shown in FIG. 5, the cushion 8 includes a cushion material 81, a first guide 82, and a second guide 83.
クッション8Aのクッション材81は、第1のクッション材の一例である。クッション8Aの第1のガイド82は、第1のストッパ部の一例である。クッション8Aの第2のガイド83は、第2のストッパ部の一例である。クッション8Aのクッション材81、第1のガイド82、及び第2のガイド83は、第1のトーションスプリング51の中に配置される。
The cushion material 81 of the cushion 8A is an example of a first cushion material. The first guide 82 of the cushion 8A is an example of a first stopper portion. The second guide 83 of the cushion 8A is an example of a second stopper portion. The cushion material 81, the first guide 82, and the second guide 83 of the cushion 8 </ b> A are disposed in the first torsion spring 51.
クッション8Bのクッション材81は、第2のクッション材の一例である。クッション8Bの第1のガイド82は、第3のストッパ部の一例である。クッション8Bの第2のガイド83は、第4のストッパ部の一例である。クッション8Bのクッション材81、第1のガイド82、及び第2のガイド83は、第2のトーションスプリング52の中に配置される。
The cushion material 81 of the cushion 8B is an example of a second cushion material. The first guide 82 of the cushion 8B is an example of a third stopper portion. The second guide 83 of the cushion 8B is an example of a fourth stopper portion. The cushion material 81, the first guide 82, and the second guide 83 of the cushion 8 </ b> B are disposed in the second torsion spring 52.
クッション材81は、エラストマーによって作られ、弾性を有する。エラストマーは、合成ゴム、天然ゴム、ウレタンゴム、シリコンゴム、及びフッ素ゴムを含む。なお、クッション材81は他の材料によって作られても良い。
The cushion material 81 is made of an elastomer and has elasticity. The elastomer includes synthetic rubber, natural rubber, urethane rubber, silicon rubber, and fluororubber. The cushion material 81 may be made of other materials.
クッション材81は、当該クッション材81を中に収容するトーションスプリング5の伸縮方向に沿って延びる略円柱形に形成される。なお、クッション材81の長手方向は、トーションスプリング5の伸縮方向に対して傾いても良い。
The cushion material 81 is formed in a substantially cylindrical shape extending along the expansion / contraction direction of the torsion spring 5 that accommodates the cushion material 81 therein. The longitudinal direction of the cushion material 81 may be inclined with respect to the expansion / contraction direction of the torsion spring 5.
クッション材81は、第1の端面81aと、第2の端面81bと、側面81cとを有する。第1の端面81aは、第1のシート6に向く。第2の端面81bは、第1の端面81aの反対側に位置し、第2のシート7に向く。
The cushion material 81 has a first end surface 81a, a second end surface 81b, and a side surface 81c. The first end surface 81 a faces the first sheet 6. The second end surface 81 b is located on the opposite side of the first end surface 81 a and faces the second sheet 7.
側面81cは、第1の端面81a及び第2の端面81bが向く方向と交差する方向に向く。クッション8Aのクッション材81の側面81cは、第1のトーションスプリング51の内周に向く。第1のトーションスプリング51の内周は、略円筒状に延びる第1のトーションスプリング51の内周側の部分である。クッション8Bのクッション材81の側面81cは、第2のトーションスプリング52の内周に向く。第2のトーションスプリング52の内周は、略円筒状に延びる第2のトーションスプリング52の内周側の部分である。
The side surface 81c faces in a direction intersecting with the direction in which the first end surface 81a and the second end surface 81b face. A side surface 81 c of the cushion material 81 of the cushion 8 </ b> A faces the inner periphery of the first torsion spring 51. The inner periphery of the first torsion spring 51 is a portion on the inner periphery side of the first torsion spring 51 extending in a substantially cylindrical shape. A side surface 81 c of the cushion material 81 of the cushion 8 </ b> B faces the inner periphery of the second torsion spring 52. The inner periphery of the second torsion spring 52 is a portion on the inner periphery side of the second torsion spring 52 extending in a substantially cylindrical shape.
第1のガイド82及び第2のガイド83は、例えば、合成樹脂によって作られる。第1及び第2のガイド82,83の材料のヤング率は、クッション材81の材料のヤング率よりも高い。このため、クッション材81は、第1及び第2のガイド82,83よりも弾性変形しやすい。第1及び第2のガイド82,83は、他の材料によって作られても良い。
The first guide 82 and the second guide 83 are made of synthetic resin, for example. The Young's modulus of the material of the first and second guides 82 and 83 is higher than the Young's modulus of the material of the cushion material 81. For this reason, the cushion material 81 is more easily elastically deformed than the first and second guides 82 and 83. The first and second guides 82 and 83 may be made of other materials.
第1のガイド82は、底壁82aと、周壁82bとを有する。底壁82aは、略円盤状に形成され、クッション材81の第1の端面81aを覆う。底壁82aは、第1のシート6とクッション材81との間に位置する。
The first guide 82 has a bottom wall 82a and a peripheral wall 82b. The bottom wall 82 a is formed in a substantially disk shape and covers the first end surface 81 a of the cushion material 81. The bottom wall 82 a is located between the first seat 6 and the cushion material 81.
周壁82bは、底壁82aの縁から突出する略円筒形状に形成される。周壁82bは、クッション材81の側面81cの長手方向における一部を囲む。周壁82bは、外力が作用していない自由状態において、クッション材81よりも短い。
The peripheral wall 82b is formed in a substantially cylindrical shape protruding from the edge of the bottom wall 82a. The peripheral wall 82b surrounds a part of the side surface 81c of the cushion material 81 in the longitudinal direction. The peripheral wall 82b is shorter than the cushion material 81 in a free state where no external force is applied.
クッション8Aの周壁82bは、第1のトーションスプリング51の内周とクッション材81の側面81cとの間に位置し、第1のトーションスプリング51とクッション材81とが接触することを抑制する。クッション8Bの周壁82bは、第2のトーションスプリング52の内周とクッション材81の側面81cとの間に位置し、第2のトーションスプリング52とクッション材81とが接触することを抑制する。周壁82bは、トーションスプリング5とクッション材81とが接触することを抑制すれば、例えば、クッション材81を露出させる孔やスリットが設けられても良い。
The peripheral wall 82b of the cushion 8A is located between the inner periphery of the first torsion spring 51 and the side surface 81c of the cushion material 81, and suppresses contact between the first torsion spring 51 and the cushion material 81. The peripheral wall 82b of the cushion 8B is located between the inner periphery of the second torsion spring 52 and the side surface 81c of the cushion material 81, and suppresses the contact between the second torsion spring 52 and the cushion material 81. For example, a hole or a slit that exposes the cushion material 81 may be provided in the peripheral wall 82b as long as the contact between the torsion spring 5 and the cushion material 81 is suppressed.
クッション材81は、第1のガイド82の底壁82a及び周壁82bに固着する。例えば、クッション材81及び第1のガイド82がインサート成形によって作られ、又は第1のガイド82がクッション材81に接着される。
The cushion material 81 is fixed to the bottom wall 82a and the peripheral wall 82b of the first guide 82. For example, the cushion material 81 and the first guide 82 are made by insert molding, or the first guide 82 is bonded to the cushion material 81.
第2のガイド83は、底壁83aと、周壁83bとを有する。底壁83aは、略円盤状に形成され、クッション材81の第2の端面81bを覆う。底壁83aは、第2のシート7とクッション材81との間に位置する。
The second guide 83 has a bottom wall 83a and a peripheral wall 83b. The bottom wall 83a is formed in a substantially disk shape and covers the second end surface 81b of the cushion material 81. The bottom wall 83 a is located between the second seat 7 and the cushion material 81.
周壁83bは、底壁83aの縁から突出する略円筒形状に形成される。周壁83bは、クッション材81の側面81cの長手方向における一部を囲む。周壁83bは、外力が作用していない自由状態において、クッション材81よりも短い。
The peripheral wall 83b is formed in a substantially cylindrical shape protruding from the edge of the bottom wall 83a. The peripheral wall 83b surrounds a part of the side surface 81c of the cushion material 81 in the longitudinal direction. The peripheral wall 83b is shorter than the cushion material 81 in a free state where no external force is applied.
クッション8Aの周壁83bは、第1のトーションスプリング51の内周とクッション材81の側面81cとの間に位置し、第1のトーションスプリング51とクッション材81とが接触することを抑制する。クッション8Bの周壁83bは、第2のトーションスプリング52の内周とクッション材81の側面81cとの間に位置し、第2のトーションスプリング52とクッション材81とが接触することを抑制する。周壁83bは、トーションスプリング5とクッション材81とが接触することを抑制すれば、例えば、クッション材81を露出させる孔やスリットが設けられても良い。
The peripheral wall 83b of the cushion 8A is located between the inner periphery of the first torsion spring 51 and the side surface 81c of the cushion material 81 and suppresses the first torsion spring 51 and the cushion material 81 from coming into contact with each other. The peripheral wall 83b of the cushion 8B is located between the inner periphery of the second torsion spring 52 and the side surface 81c of the cushion material 81, and suppresses the contact between the second torsion spring 52 and the cushion material 81. The peripheral wall 83b may be provided with a hole or a slit for exposing the cushion material 81, for example, if the torsion spring 5 and the cushion material 81 are prevented from contacting each other.
クッション材81が自由状態であるとき、第1のガイド82と第2のガイド83とは、互いに離間する。第1のガイド82と第2のガイド83との間から、クッション材81がクッション8の外部に露出される。
When the cushion material 81 is in a free state, the first guide 82 and the second guide 83 are separated from each other. The cushion material 81 is exposed to the outside of the cushion 8 from between the first guide 82 and the second guide 83.
クッション材81は、第2のガイド83の底壁83a及び周壁83bに固着する。例えば、クッション材81及び第2のガイド83がインサート成形によって作られ、又は第2のガイド83がクッション材81に接着される。このため、第1のガイド82及び第2のガイド83は、クッション材81を保持する。
The cushion material 81 is fixed to the bottom wall 83a and the peripheral wall 83b of the second guide 83. For example, the cushion material 81 and the second guide 83 are made by insert molding, or the second guide 83 is bonded to the cushion material 81. For this reason, the first guide 82 and the second guide 83 hold the cushion material 81.
クッション8は、トーションスプリング5の伸縮方向に弾性的に伸縮可能である。クッション8がトーションスプリング5の伸縮方向に圧縮されると、第1のガイド82と第2のガイド83とが互いに接近し、クッション材81が弾性的に圧縮される。クッション8を圧縮する力が解除されると、クッション材81が弾性的に復元し、第1のガイド82と第2のガイド83とが互いに離間する。このように、第1のガイド82と第2のガイド83とは、トーションスプリング5の伸縮方向に互いに接近及び離間可能である。
The cushion 8 can be elastically expanded and contracted in the expansion and contraction direction of the torsion spring 5. When the cushion 8 is compressed in the expansion / contraction direction of the torsion spring 5, the first guide 82 and the second guide 83 approach each other, and the cushion material 81 is elastically compressed. When the force for compressing the cushion 8 is released, the cushion material 81 is elastically restored, and the first guide 82 and the second guide 83 are separated from each other. As described above, the first guide 82 and the second guide 83 can be moved toward and away from each other in the extending and contracting direction of the torsion spring 5.
クッション8が所定の長さ圧縮されることで、第1のガイド82の周壁82bと、第2のガイド83の周壁83bとが接触する。これにより、第1のガイド82及び第2のガイド83は、クッション8がさらに圧縮されることを制限する。
When the cushion 8 is compressed by a predetermined length, the peripheral wall 82b of the first guide 82 and the peripheral wall 83b of the second guide 83 come into contact with each other. Thereby, the 1st guide 82 and the 2nd guide 83 restrict | limit that the cushion 8 is compressed further.
クッション材81の側面81cに、窪み81dが設けられる。窪み81dは、クッション材81が自由状態のとき、第1のガイド82と第2のガイド83との間に位置する。窪み81dは、第1及び第2のガイド82,83の周壁82b,83bから離間する方向に窪む。窪み81dが設けられることで、圧縮されたクッション材81が第1及び第2のガイド82,83の周壁82b,83bに挟まれることが抑制される。
The depression 81d is provided on the side surface 81c of the cushion material 81. The recess 81d is located between the first guide 82 and the second guide 83 when the cushion material 81 is in a free state. The recess 81 d is recessed in a direction away from the peripheral walls 82 b and 83 b of the first and second guides 82 and 83. By providing the depression 81d, the compressed cushion material 81 is suppressed from being sandwiched between the peripheral walls 82b and 83b of the first and second guides 82 and 83.
図3に示すように、クッション8は、第1のシート6の凸部63と、第2のシート7の凸部72との間に位置する。クッション8は、第1のシート6の凸部63と、第2のシート7の凸部72との間で、トーションスプリング5の伸縮方向に移動可能である。すなわち、クッション8は、第1のシート6の凸部63と、第2のシート7の凸部72との少なくとも一方から離間可能である。
3, the cushion 8 is located between the convex portion 63 of the first sheet 6 and the convex portion 72 of the second sheet 7. The cushion 8 is movable between the convex portion 63 of the first seat 6 and the convex portion 72 of the second seat 7 in the expansion / contraction direction of the torsion spring 5. That is, the cushion 8 can be separated from at least one of the convex portion 63 of the first seat 6 and the convex portion 72 of the second seat 7.
図4に示すように、ダンパ装置1は、複数の第1の摩擦部材11と、第1の板バネ12と、複数の第2の摩擦部材13と、第2の板バネ14と、をさらに有する。第1及び第2の摩擦部材11,13は、例えば、スラスト部材とも称され得る。
As shown in FIG. 4, the damper device 1 further includes a plurality of first friction members 11, a first leaf spring 12, a plurality of second friction members 13, and a second leaf spring 14. Have. The 1st and 2nd friction members 11 and 13 may also be called a thrust member, for example.
複数の第1の摩擦部材11は、ドライブプレート2の二つのディスクプレート22にそれぞれ取り付けられる。第1の摩擦部材11は、軸方向において、ドライブプレート2と中間プレート3との間に介在する。第1の摩擦部材11は、中間プレート3との間に摩擦力を生じさせる。
The plurality of first friction members 11 are respectively attached to the two disk plates 22 of the drive plate 2. The first friction member 11 is interposed between the drive plate 2 and the intermediate plate 3 in the axial direction. The first friction member 11 generates a frictional force between the first friction member 11 and the intermediate plate 3.
第1の板バネ12は、第1の摩擦部材11とディスクプレート22との間に介在する。第1の板バネ12は、第1の摩擦部材11を中間プレート3に向かって押す。第1の板バネ12は、第1の摩擦部材11と中間プレート3との間に生じる摩擦力を大きくする。
The first leaf spring 12 is interposed between the first friction member 11 and the disk plate 22. The first leaf spring 12 pushes the first friction member 11 toward the intermediate plate 3. The first leaf spring 12 increases the frictional force generated between the first friction member 11 and the intermediate plate 3.
複数の第2の摩擦部材13は、中間プレート3の二つのプレート31にそれぞれ取り付けられる。第2の摩擦部材13は、軸方向において、中間プレート3とドリブンプレート4との間に介在する。第2の摩擦部材13は、ドリブンプレート4との間に摩擦力を生じさせる。
The plurality of second friction members 13 are respectively attached to the two plates 31 of the intermediate plate 3. The second friction member 13 is interposed between the intermediate plate 3 and the driven plate 4 in the axial direction. The second friction member 13 generates a friction force between the driven plate 4 and the second friction member 13.
第2の板バネ14は、第2の摩擦部材13と中間プレート3のプレート31との間に介在する。第2の板バネ14は、第2の摩擦部材13をドリブンプレート4に向かって押す。第2の板バネ14は、第2の摩擦部材13とドリブンプレート4との間に生じる摩擦力を大きくする。
The second leaf spring 14 is interposed between the second friction member 13 and the plate 31 of the intermediate plate 3. The second leaf spring 14 pushes the second friction member 13 toward the driven plate 4. The second leaf spring 14 increases the frictional force generated between the second friction member 13 and the driven plate 4.
以下、上記構成のダンパ装置1の作用の一例について説明する。なお、ダンパ装置1の作用は、以下に説明されるものに限らない。
Hereinafter, an example of the operation of the damper device 1 configured as described above will be described. In addition, the effect | action of the damper apparatus 1 is not restricted to what is demonstrated below.
図6は、第1の実施形態のダンパ装置1の特性の一例を示すグラフである。図6において、縦軸は、ダンパ装置1に作用するトルクを示す。横軸は、ドライブプレート2及びドリブンプレート4に外力が作用しない状態からの、ドライブプレート2とドリブンプレート4との間の相対的な回転角度(捩れ角)を示す。すなわち、図6のグラフは、ダンパ装置1に作用するトルクに対する、ドライブプレート2とドリブンプレート4との間の捩れ角を示す。
FIG. 6 is a graph showing an example of the characteristics of the damper device 1 according to the first embodiment. In FIG. 6, the vertical axis indicates the torque acting on the damper device 1. The horizontal axis indicates the relative rotation angle (twist angle) between the drive plate 2 and the driven plate 4 from the state where no external force acts on the drive plate 2 and the driven plate 4. That is, the graph of FIG. 6 shows the twist angle between the drive plate 2 and the driven plate 4 with respect to the torque acting on the damper device 1.
図6のグラフの傾きは、ダンパ装置1の捩れ剛性に比例する。すなわち、グラフの傾きが小さいほど、ダンパ装置1の捩れ剛性は低い。ダンパ装置1の捩れ剛性が高いほど、ドライブプレート2に対してドリブンプレート4が相対的に回転しやすい。
The slope of the graph in FIG. 6 is proportional to the torsional rigidity of the damper device 1. That is, the smaller the slope of the graph, the lower the torsional rigidity of the damper device 1. The higher the torsional rigidity of the damper device 1, the easier the driven plate 4 rotates relative to the drive plate 2.
図6に示すように、ダンパ装置1のトルクに対する捩れ角のグラフは、捩れ角に応じて直列領域F1、クッション領域F2、及び当接領域F3の三つの領域を有する。直列領域F1、クッション領域F2、及び当接領域F3における、ダンパ装置1の固有角振動数はそれぞれ異なる。なお、ダンパ装置1はこれに限らず、これら三つの領域のいずれか二つの領域のみを有しても良い。
As shown in FIG. 6, the graph of the twist angle with respect to the torque of the damper device 1 has three regions of a series region F1, a cushion region F2, and a contact region F3 according to the twist angle. The natural angular frequency of the damper device 1 is different in the series region F1, the cushion region F2, and the contact region F3. The damper device 1 is not limited to this, and may have only two of these three regions.
図3は、直列領域F1におけるダンパ装置1を示す。図7は、第1の実施形態のクッション領域F2におけるダンパ装置1の一例を、ドライブプレート2を省略して示す正面図である。図8は、第1の実施形態の当接領域F3におけるダンパ装置1の一例を、ドライブプレート2を省略して示す正面図である。図7及び図8は、図3と同じく、内側ハブ41及びスプリング43を省略してドリブンプレート4を示す。
FIG. 3 shows the damper device 1 in the series region F1. FIG. 7 is a front view showing an example of the damper device 1 in the cushion region F2 of the first embodiment, with the drive plate 2 omitted. FIG. 8 is a front view showing an example of the damper device 1 in the contact region F3 of the first embodiment, with the drive plate 2 omitted. 7 and 8 show the driven plate 4 with the inner hub 41 and the spring 43 omitted, as in FIG.
直列領域F1は、直列に接続された第1のトーションスプリング51と第2のトーションスプリング52とがエンジンの回転変動を減衰させる領域である。すなわち、直列領域F1において、四つのトーションスプリング5は、ともに伸縮可能である。
The series region F1 is a region in which the first torsion spring 51 and the second torsion spring 52 connected in series attenuate the rotational fluctuation of the engine. That is, in the series region F1, the four torsion springs 5 can both expand and contract.
図3に示すように、直列領域F1において、クッション8は、第1のシート6及び第2のシート7の少なくとも一方から離間する。このため、直列領域F1において、クッション8は、外力が作用しない自由状態である。
As shown in FIG. 3, the cushion 8 is separated from at least one of the first seat 6 and the second seat 7 in the series region F1. For this reason, in the series area | region F1, the cushion 8 is a free state in which an external force does not act.
直列領域F1において、ダンパ装置1にトルクが作用すると、ドライブプレート2、中間プレート3、及びドリブンプレート4が中心軸Ax回りに相対的に回転する。すなわち、ダンパ装置1にトルクが作用することによって、図7に示すドライブプレート2とドリブンプレート4との間の捩れ角θtが生じる。
When torque acts on the damper device 1 in the series region F1, the drive plate 2, the intermediate plate 3, and the driven plate 4 rotate relatively around the central axis Ax. That is, when the torque acts on the damper device 1, a twist angle θt between the drive plate 2 and the driven plate 4 shown in FIG. 7 is generated.
トルクが大きくなるに従って、中間プレート3のアーム34と、ドリブンプレート4のアーム42bとの間の角度θ1が小さくなる。さらに、トルクが大きくなるに従って、ドライブプレート2の第1のフレーム部22cと、中間プレート3のアーム34との間の角度θ2が小さくなる。
As the torque increases, the angle θ1 between the arm 34 of the intermediate plate 3 and the arm 42b of the driven plate 4 decreases. Furthermore, as the torque increases, the angle θ2 between the first frame portion 22c of the drive plate 2 and the arm 34 of the intermediate plate 3 decreases.
図6に示すように、ダンパ装置1に作用するトルクが増大することで捩れ角θtが第1の当接捩れ角θt1に到達すると、ダンパ装置1は、直列領域F1からクッション領域F2に変移する。クッション領域F2におけるトルクに対する捩れ角θtのグラフの傾きは、直列領域F1おけるトルクに対する捩れ角θtのグラフの傾きよりよりも大きい。すなわち、クッション領域F2におけるダンパ装置1の捩れ剛性は、直列領域F1におけるダンパ装置1の捩れ剛性よりも高い。
As shown in FIG. 6, when the torque acting on the damper device 1 increases and the twist angle θt reaches the first contact twist angle θt1, the damper device 1 changes from the series region F1 to the cushion region F2. . The inclination of the graph of the twist angle θt with respect to the torque in the cushion region F2 is larger than the slope of the graph of the twist angle θt with respect to the torque in the series region F1. That is, the torsional rigidity of the damper device 1 in the cushion region F2 is higher than the torsional rigidity of the damper device 1 in the series region F1.
図7に示すように、捩れ角θtが第1の当接捩れ角θt1に到達すると、第1のシート6の凸部63が、クッション8の第1のガイド82に当接する。さらに、第2のシート7の凸部72が、クッション8の第2のガイド83に当接する。すなわち、クッション領域F2において、第1及び第2のシート6,7は、クッション8に接触する。
7, when the twist angle θt reaches the first contact twist angle θt1, the convex portion 63 of the first seat 6 contacts the first guide 82 of the cushion 8. Further, the convex portion 72 of the second seat 7 abuts on the second guide 83 of the cushion 8. In other words, the first and second seats 6 and 7 are in contact with the cushion 8 in the cushion region F2.
中間プレート3に対してドリブンプレート4が相対的に第1の当接捩れ角θt1の半分(1/2θt1)まで回転すると、第1のシート6Bの凸部63と、第2のシート7Aの凸部72とが、クッション8Aに当接する。1/2θt1は、第1の角度の一例である。なお、第1の角度はこれに限らない。
When the driven plate 4 rotates relative to the intermediate plate 3 to half of the first contact twist angle θt1 (1 / 2θt1), the convex portion 63 of the first sheet 6B and the convexity of the second sheet 7A. The part 72 contacts the cushion 8A. 1 / 2θt1 is an example of the first angle. The first angle is not limited to this.
中間プレート3に対してドリブンプレート4が相対的に1/2θt1より大きく回転することにより、中間プレート3に支持される第2のシート7Aと、ドリブンプレート4に支持される第1のシート6Bとが、トーションスプリング5の伸縮方向にクッション8Aを圧縮する。これにより、第1のガイド82と第2のガイド83との間のクッション材81が弾性的に圧縮される。
When the driven plate 4 rotates relative to the intermediate plate 3 by more than 1 / 2θt1, the second sheet 7A supported by the intermediate plate 3 and the first sheet 6B supported by the driven plate 4 However, the cushion 8A is compressed in the expansion and contraction direction of the torsion spring 5. As a result, the cushion material 81 between the first guide 82 and the second guide 83 is elastically compressed.
ドライブプレート2に対して中間プレート3が相対的に第1の当接捩れ角θt1の半分(1/2θt1)まで回転すると、第1のシート6Aの凸部63と、第2のシート7Bの凸部72とが、クッション8Bに当接する。1/2θt1は、第3の角度の一例である。なお、第3の角度はこれに限らず、第1の角度と異なっても良い。
When the intermediate plate 3 rotates relative to the drive plate 2 to half of the first contact twist angle θt1 (1 / 2θt1), the convex portion 63 of the first sheet 6A and the convexity of the second sheet 7B. The part 72 contacts the cushion 8B. 1 / 2θt1 is an example of a third angle. The third angle is not limited to this, and may be different from the first angle.
ドライブプレート2に対して中間プレート3が相対的に1/2θt1より大きく回転することにより、中間プレート3に支持される第2のシート7Bと、ドリブンプレート4に支持される第1のシート6Aとが、トーションスプリング5の伸縮方向にクッション8Bを圧縮する。これにより、第1のガイド82と第2のガイド83との間のクッション材81が弾性的に圧縮される。
By rotating the intermediate plate 3 relatively larger than 1 / 2θt1 with respect to the drive plate 2, the second sheet 7B supported by the intermediate plate 3 and the first sheet 6A supported by the driven plate 4 However, the cushion 8B is compressed in the expansion / contraction direction of the torsion spring 5. As a result, the cushion material 81 between the first guide 82 and the second guide 83 is elastically compressed.
捩れ角θtが第1の当接捩れ角θt1に到達したとき、コイル状に巻かれたトーションスプリング5の隣り合う金属線は、互いに離間したままである。すなわち、トーションスプリング5はさらに圧縮され得る。
When the twist angle θt reaches the first contact twist angle θt1, the adjacent metal wires of the torsion spring 5 wound in a coil shape remain separated from each other. That is, the torsion spring 5 can be further compressed.
クッション領域F2は、直列に接続された第1のトーションスプリング51及び第2のトーションスプリング52と、直列に接続されたクッション8A及びクッション8Bとがエンジンの回転変動を減衰させる領域である。すなわち、クッション領域F2において、四つのトーションスプリング5と、四つのクッション8とが、ともに伸縮可能である。
The cushion region F2 is a region in which the first torsion spring 51 and the second torsion spring 52 connected in series, and the cushion 8A and the cushion 8B connected in series attenuate the rotational fluctuation of the engine. That is, in the cushion region F2, the four torsion springs 5 and the four cushions 8 can both expand and contract.
図6に示すように、ダンパ装置1に作用するトルクが増大することで捩れ角が第2の当接捩れ角θt2に到達すると、ダンパ装置1は、クッション領域F2から当接領域F3に変移する。第2の当接捩れ角θt2は、第1の当接捩れ角θt1よりも大きい。当接領域F3において、トルクの増加に対する捩れ角θtの増加は止まる。すなわち、当接領域F3におけるダンパ装置1の捩れ剛性は、クッション領域F2におけるダンパ装置1の捩れ剛性よりも高い。
As shown in FIG. 6, when the torque acting on the damper device 1 increases and the twist angle reaches the second contact twist angle θt2, the damper device 1 changes from the cushion region F2 to the contact region F3. . The second contact twist angle θt2 is larger than the first contact twist angle θt1. In the contact region F3, the increase in the twist angle θt with respect to the increase in torque stops. That is, the torsional rigidity of the damper device 1 in the contact region F3 is higher than the torsional rigidity of the damper device 1 in the cushion region F2.
図8に示すように、捩れ角θtが第2の当接捩れ角θt2に到達すると、第1のガイド82と第2のガイド83とが互いに当接する。すなわち、当接領域F3において、第1及び第2のシート6,7は、互いに当接した第1及び第2のガイド82,83を介して、互いに押圧する。
As shown in FIG. 8, when the twist angle θt reaches the second contact twist angle θt2, the first guide 82 and the second guide 83 come into contact with each other. That is, in the contact region F3, the first and second sheets 6 and 7 are pressed against each other via the first and second guides 82 and 83 that are in contact with each other.
中間プレート3に対してドリブンプレート4が相対的に第2の当接捩れ角θt2の半分(1/2θt2)まで回転すると、クッション8Aの第1のガイド82と第2のガイド83とが互いに当接する。これにより、第1及び第2のガイド82,83は、中間プレート3に対してドリブンプレート4がさらに相対的に回転することを制限する。1/2θt2は、第2の角度の一例であり、1/2θt1よりも大きい。なお、第2の角度はこれに限らない。
When the driven plate 4 rotates relatively to the half of the second contact twist angle θt2 (1 / 2θt2) relative to the intermediate plate 3, the first guide 82 and the second guide 83 of the cushion 8A contact each other. Touch. Thus, the first and second guides 82 and 83 restrict the driven plate 4 from further rotating relative to the intermediate plate 3. 1 / 2θt2 is an example of the second angle, and is larger than 1 / 2θt1. Note that the second angle is not limited to this.
ドライブプレート2に対して中間プレート3が相対的に第2の当接捩れ角θt2の半分(1/2θt2)まで回転すると、クッション8Bの第1のガイド82と第2のガイド83とが互いに当接する。これにより、第1及び第2のガイド82,83は、ドライブプレート2に対して中間プレート3がさらに相対的に回転することを制限する。1/2θt2は、第4の角度の一例であり、1/2θt1よりも大きい。なお、第4の角度はこれに限らず、第2の角度と異なっても良い。
When the intermediate plate 3 rotates relative to the drive plate 2 to half of the second contact twist angle θt2 (1 / 2θt2), the first guide 82 and the second guide 83 of the cushion 8B contact each other. Touch. As a result, the first and second guides 82 and 83 restrict the intermediate plate 3 from further rotating relative to the drive plate 2. 1 / 2θt2 is an example of the fourth angle, and is larger than 1 / 2θt1. The fourth angle is not limited to this, and may be different from the second angle.
当接領域F3において、第1及び第2のガイド82,83は、互いに当接し、トーションスプリング5が縮むことを制限するとともに、クッション材81が縮むことを制限する。このように、当接領域F3は、トーションスプリング5及びクッション8がエンジンの回転変動を減衰させない領域である。
In the contact region F3, the first and second guides 82 and 83 are in contact with each other, restricting the torsion spring 5 from contracting and restricting the cushion material 81 from contracting. Thus, the contact region F3 is a region where the torsion spring 5 and the cushion 8 do not attenuate engine rotational fluctuations.
捩れ角θtが第2の当接捩れ角θt2に到達したとき、コイル状に巻かれたトーションスプリング5の隣り合う金属線は、互いに離間したままである。すなわち、第1及び第2のガイド82,83が無い場合、トーションスプリング5はさらに圧縮され得る。第1及び第2のガイド82,83は、互いに当接することで、トーションスプリング5が過剰に圧縮され、密着限界が生じることを抑制する。
When the twist angle θt reaches the second contact twist angle θt2, the adjacent metal wires of the torsion spring 5 wound in a coil shape remain separated from each other. That is, in the absence of the first and second guides 82 and 83, the torsion spring 5 can be further compressed. The first and second guides 82 and 83 are brought into contact with each other, thereby suppressing the torsion spring 5 from being excessively compressed and causing an adhesion limit.
図6に示すように、ダンパ装置1に、常用トルクT1と、滑りトルクT2とが設定される。常用トルクT1は、エンジンの回転が常用域である場合の最大のトルクである。滑りトルクT2は、ドライブプレート2のライニング部25とフライホイールとの間に滑りが生じるトルクである。すなわち、トルクが増加して滑りトルクT2に達すると、ドライブプレート2のライニング部25とフライホイールとの間に滑りが生じる。滑りトルクT2は、常用トルクT1よりも大きい。
As shown in FIG. 6, a service torque T1 and a sliding torque T2 are set in the damper device 1. The normal torque T1 is the maximum torque when the engine rotation is in the normal range. The slip torque T2 is a torque that causes slip between the lining portion 25 of the drive plate 2 and the flywheel. That is, when the torque increases and reaches the slip torque T2, slip occurs between the lining portion 25 of the drive plate 2 and the flywheel. The slip torque T2 is larger than the normal torque T1.
ダンパ装置1は、例えば、クッション領域F2においてトルクが常用トルクT1に到達するよう設定される。例えば、第1及び第2のシート6,7の凸部63,72の長さや、トーションスプリング5のバネ定数によって、トルクに対する捩れ角θtが調整され得る。
The damper device 1 is set so that the torque reaches the normal torque T1 in the cushion region F2, for example. For example, the twist angle θt with respect to the torque can be adjusted by the lengths of the convex portions 63 and 72 of the first and second sheets 6 and 7 and the spring constant of the torsion spring 5.
以上説明された第1の実施形態に係るダンパ装置1において、クッション8Aの第2のガイド83は、中間プレート3に対してドリブンプレート4が回転方向の一方側に1/2θt2まで回転した状態で第1のガイド82に接触して、ドリブンプレート4が中間プレート3に対して回転方向の一方側に相対的に回転することを制限する。このように、第1のトーションスプリング51が密着限界となることを抑制する第1のガイド82部と第2のガイド83とが、第1のトーションスプリング51の中に配置される。これにより、第1のトーションスプリング51の外周側にストッパを設ける必要が無く、第1のトーションスプリング51をより径方向外側に配置することが可能となる。第1のトーションスプリング51がより径方向外側に配置されることで、第1のトーションスプリング51の減衰性能(捩れ特性)の低下が抑制されるとともに、ダンパ装置1の大型化が抑制される。
In the damper device 1 according to the first embodiment described above, the second guide 83 of the cushion 8A is in a state where the driven plate 4 is rotated to ½θt2 on one side in the rotational direction with respect to the intermediate plate 3. Contacting the first guide 82 restricts the driven plate 4 from rotating relative to the intermediate plate 3 to one side in the rotational direction. In this way, the first guide 82 portion and the second guide 83 that suppress the first torsion spring 51 from reaching the close contact limit are disposed in the first torsion spring 51. Thereby, it is not necessary to provide a stopper on the outer peripheral side of the first torsion spring 51, and the first torsion spring 51 can be arranged on the outer side in the radial direction. By disposing the first torsion spring 51 on the outer side in the radial direction, a decrease in the damping performance (torsional characteristic) of the first torsion spring 51 is suppressed, and an increase in the size of the damper device 1 is suppressed.
一般的に、複数のコイルスプリングを直列に接続する場合、当該複数のコイルスプリングは互いに独立して圧縮される。このため、全ての回転体について相対的な回転を制限するストッパが設けられることで、コイルスプリングが密着限界となることが防がれる。しかし、コイルスプリングの内部にエラストマーを配置する場合、ストッパはコイルスプリングの外に配置され、コイルスプリングはより径方向内側に配置されることになる。一方、本実施形態では、第2のトーションスプリング52が中間プレート3とドライブプレート2との間に位置し、第1のトーションスプリング51と第2のトーションスプリング52とが直列に接続される。第2のトーションスプリング52の中に、ドライブプレート2に対して中間プレート3が回転方向の一方側に1/2θt2まで回転した状態で第1のガイド82に接触して、中間プレート3がドライブプレート2に対して回転方向の一方側に相対的に回転することを制限する第2のガイド83が配置される。すなわち、上記のように直列に接続された第1及び第2のトーションスプリング51,52の中に、クッション材81のみならず、ドライブプレート2、中間プレート3、及びドリブンプレート4の相対的な回転を制限する第1及び第2のガイド82,83が配置される。これにより、ストッパを第1及び第2のトーションスプリング51,52の外に配置する必要が無く、第1及び第2のトーションスプリング51,52をより径方向外側に配置することが可能となる。
Generally, when a plurality of coil springs are connected in series, the plurality of coil springs are compressed independently of each other. For this reason, the stopper which restrict | limits relative rotation about all the rotary bodies is provided, and it is prevented that a coil spring becomes a contact | adherence limit. However, when the elastomer is disposed inside the coil spring, the stopper is disposed outside the coil spring, and the coil spring is disposed more radially inward. On the other hand, in the present embodiment, the second torsion spring 52 is positioned between the intermediate plate 3 and the drive plate 2, and the first torsion spring 51 and the second torsion spring 52 are connected in series. In the second torsion spring 52, the intermediate plate 3 comes into contact with the first guide 82 in a state where the intermediate plate 3 is rotated to ½θt2 on one side in the rotation direction with respect to the drive plate 2, so A second guide 83 that restricts relative rotation to one side in the rotation direction with respect to 2 is arranged. That is, not only the cushion material 81 but also the relative rotation of the drive plate 2, the intermediate plate 3, and the driven plate 4 in the first and second torsion springs 51 and 52 connected in series as described above. First and second guides 82 and 83 for limiting the above are arranged. Thereby, it is not necessary to arrange the stopper outside the first and second torsion springs 51 and 52, and the first and second torsion springs 51 and 52 can be arranged more radially outward.
第1及び第2のガイド82,83は、クッション材81の側面81cの一部を囲み、第1のトーションスプリング51とクッション材81の側面81cとの間に位置する。これにより、クッション材81が第1のトーションスプリング51に接触することが抑制される。また、第1及び第2のガイド82,83がクッション材81の側面81cを支持することで、クッション材81が真っ直ぐに保たれやすい。これにより、第1及び第2のガイド82,83がクッション材81の伸縮方向をガイドできる。
The first and second guides 82 and 83 surround a part of the side surface 81c of the cushion material 81 and are positioned between the first torsion spring 51 and the side surface 81c of the cushion material 81. Thereby, it is suppressed that the cushion material 81 contacts the 1st torsion spring 51. FIG. Further, since the first and second guides 82 and 83 support the side surface 81c of the cushion material 81, the cushion material 81 can be easily kept straight. Thereby, the 1st and 2nd guides 82 and 83 can guide the expansion-contraction direction of the cushioning material 81. FIG.
(第2の実施形態)
以下に、第2の実施形態について、図9を参照して説明する。なお、以下の複数の実施形態の説明において、既に説明された構成要素と同様の機能を持つ構成要素は、当該既述の構成要素と同じ符号が付され、さらに説明が省略される場合がある。また、同じ符号が付された複数の構成要素は、全ての機能及び性質が共通するとは限らず、各実施形態に応じた異なる機能及び性質を有していても良い。 (Second Embodiment)
Hereinafter, the second embodiment will be described with reference to FIG. In the following description of the plurality of embodiments, components having the same functions as the components already described are denoted by the same reference numerals as those described above, and further description may be omitted. . In addition, a plurality of components to which the same reference numerals are attached do not necessarily have the same functions and properties, and may have different functions and properties according to each embodiment.
以下に、第2の実施形態について、図9を参照して説明する。なお、以下の複数の実施形態の説明において、既に説明された構成要素と同様の機能を持つ構成要素は、当該既述の構成要素と同じ符号が付され、さらに説明が省略される場合がある。また、同じ符号が付された複数の構成要素は、全ての機能及び性質が共通するとは限らず、各実施形態に応じた異なる機能及び性質を有していても良い。 (Second Embodiment)
Hereinafter, the second embodiment will be described with reference to FIG. In the following description of the plurality of embodiments, components having the same functions as the components already described are denoted by the same reference numerals as those described above, and further description may be omitted. . In addition, a plurality of components to which the same reference numerals are attached do not necessarily have the same functions and properties, and may have different functions and properties according to each embodiment.
図9は、第2の実施形態に係るクッション8の一例を示す断面図である。図8に示すように、第2の実施形態のクッション材81は、トーションスプリング5の伸縮方向に延びる円筒形状に形成される。クッション材81に、第1の端面81a及び第2の端面81bに連通する孔81eが設けられる。
FIG. 9 is a cross-sectional view showing an example of the cushion 8 according to the second embodiment. As shown in FIG. 8, the cushion material 81 of the second embodiment is formed in a cylindrical shape that extends in the expansion and contraction direction of the torsion spring 5. The cushion material 81 is provided with a hole 81e communicating with the first end surface 81a and the second end surface 81b.
第2の実施形態の第1のガイド82は、底壁82aと、突起82cとを有する。突起82cは、底壁82aから突出し、クッション材81の孔81eに挿入される。クッション材81は、突起82cを覆う。
The first guide 82 of the second embodiment has a bottom wall 82a and a protrusion 82c. The protrusion 82 c protrudes from the bottom wall 82 a and is inserted into the hole 81 e of the cushion material 81. The cushion material 81 covers the protrusion 82c.
第2の実施形態の第2のガイド83は、底壁83aと、突起83cとを有する。突起83cは、底壁83aから突出し、クッション材81の孔81eに挿入される。クッション材81は、突起83cを覆う。
The second guide 83 of the second embodiment has a bottom wall 83a and a protrusion 83c. The protrusion 83 c protrudes from the bottom wall 83 a and is inserted into the hole 81 e of the cushion material 81. The cushion material 81 covers the protrusion 83c.
中間プレート3に対してドリブンプレート4が回転方向の一方側に1/2θt2まで回転すると、クッション8Aの第2のガイド83の突起83cは、第1のガイド82の突起82cに接触する。これにより、ドリブンプレート4が中間プレート3に対して回転方向の一方側に相対的に回転することが制限される。
When the driven plate 4 is rotated to ½θt2 to one side in the rotation direction with respect to the intermediate plate 3, the protrusion 83c of the second guide 83 of the cushion 8A comes into contact with the protrusion 82c of the first guide 82. As a result, the driven plate 4 is restricted from rotating relative to the intermediate plate 3 to one side in the rotational direction.
さらに、ドライブプレート2に対して中間プレート3が回転方向の一方側に1/2θt2まで回転すると、クッション8Bの第2のガイド83の突起83cは、第1のガイド82の突起82cに接触する。これにより、中間プレート3がドライブプレート2に対して回転方向の一方側に相対的に回転することが制限される。
Furthermore, when the intermediate plate 3 rotates to ½θt2 on one side in the rotational direction with respect to the drive plate 2, the protrusion 83c of the second guide 83 of the cushion 8B comes into contact with the protrusion 82c of the first guide 82. Thereby, it is restricted that the intermediate plate 3 rotates relative to the drive plate 2 in one direction in the rotation direction.
以上説明された第2の実施形態のダンパ装置1において、クッション材81の孔81eに、第1のガイド82の突起82cと、第2のガイド83の突起83cとが通される。これにより、孔81eが、第1のガイド82の突起82cと、第2のガイド83の突起83cとをガイドし、二つの突起82c,83cがより確実に当接できる。
In the damper device 1 of the second embodiment described above, the projection 82c of the first guide 82 and the projection 83c of the second guide 83 are passed through the hole 81e of the cushion material 81. Thereby, the hole 81e guides the projection 82c of the first guide 82 and the projection 83c of the second guide 83, so that the two projections 82c and 83c can contact each other more reliably.
(第3の実施形態)
以下に、第3の実施形態について、図10乃至図12を参照して説明する。図10は、第3の実施形態に係るクッション8の一例を示す断面図である。図10に示すように、第3の実施形態のクッション材81は、第1の固着部85と、第2の固着部86と、第1の圧縮部87と、二つの第2の圧縮部88とを有する。 (Third embodiment)
The third embodiment will be described below with reference to FIGS. 10 to 12. FIG. 10 is a cross-sectional view illustrating an example of thecushion 8 according to the third embodiment. As shown in FIG. 10, the cushion material 81 of the third embodiment includes a first fixing portion 85, a second fixing portion 86, a first compression portion 87, and two second compression portions 88. And have.
以下に、第3の実施形態について、図10乃至図12を参照して説明する。図10は、第3の実施形態に係るクッション8の一例を示す断面図である。図10に示すように、第3の実施形態のクッション材81は、第1の固着部85と、第2の固着部86と、第1の圧縮部87と、二つの第2の圧縮部88とを有する。 (Third embodiment)
The third embodiment will be described below with reference to FIGS. 10 to 12. FIG. 10 is a cross-sectional view illustrating an example of the
第1の固着部85は、第1のガイド82の内部に配置され、第1のガイド82に固着される。第2の固着部86は、第2のガイド83の内部に配置され、第2のガイド83に固着される。
The first fixing portion 85 is disposed inside the first guide 82 and is fixed to the first guide 82. The second fixing portion 86 is disposed inside the second guide 83 and is fixed to the second guide 83.
第1の圧縮部87は、第1の固着部85と第2の固着部86とを接続する。第1の圧縮部87は、トーションスプリング5の伸縮方向に延びる略円柱状に形成される。なお、第1の圧縮部87は、他の形状に形成されても良い。
The first compression portion 87 connects the first fixing portion 85 and the second fixing portion 86. The first compression portion 87 is formed in a substantially cylindrical shape extending in the expansion / contraction direction of the torsion spring 5. In addition, the 1st compression part 87 may be formed in another shape.
一方の第2の圧縮部88は、第1の固着部85から第2の固着部86に向かって突出する。他方の第2の圧縮部88は、第2の固着部86から第1の固着部85に向かって突出する。
One second compression portion 88 protrudes from the first fixing portion 85 toward the second fixing portion 86. The other second compression portion 88 protrudes from the second fixing portion 86 toward the first fixing portion 85.
二つの第2の圧縮部88はそれぞれ、トーションスプリング5の伸縮方向に延びる略円筒状に形成され、第1の圧縮部87を囲む。なお、第2の圧縮部88は、他の形状に形成されても良い。クッション8に外力が作用しない自由状態において、二つの第2の圧縮部88は、互いに離間する。
Each of the two second compression portions 88 is formed in a substantially cylindrical shape extending in the expansion / contraction direction of the torsion spring 5 and surrounds the first compression portion 87. The second compression unit 88 may be formed in other shapes. In a free state where no external force acts on the cushion 8, the two second compression portions 88 are separated from each other.
図11は、第3の実施形態の圧縮されたクッション8の一例を示す断面図である。図11に示すように、クッション8が圧縮されると、第1の圧縮部87が潰れるとともに、二つの第2の圧縮部88が互いに接触する。第2の圧縮部88は、第1及び第2のガイド82,83が互いに接触するよりも先に互いに接触する。
FIG. 11 is a cross-sectional view showing an example of the compressed cushion 8 according to the third embodiment. As shown in FIG. 11, when the cushion 8 is compressed, the first compression portion 87 is crushed and the two second compression portions 88 are in contact with each other. The second compression portion 88 contacts each other before the first and second guides 82 and 83 contact each other.
クッション8を圧縮する力が解除されると、第1の圧縮部87が弾性的に復元し、第1の圧縮部87が伸びる。これにより、二つの第2の圧縮部88が互いに離間する。このように、二つの第2の圧縮部88は、トーションスプリング5の伸縮方向において互いに接近及び離間可能である。
When the force for compressing the cushion 8 is released, the first compression portion 87 is elastically restored and the first compression portion 87 is extended. As a result, the two second compression portions 88 are separated from each other. As described above, the two second compression portions 88 can approach and separate from each other in the expansion and contraction direction of the torsion spring 5.
図12は、第3の実施形態のダンパ装置1の特性の一例を示すグラフである。図12において、縦軸は、ダンパ装置1に作用するトルクを示す。横軸は、ドライブプレート2及びドリブンプレート4に外力が作用しない状態からの捩れ角を示す。
FIG. 12 is a graph showing an example of the characteristics of the damper device 1 according to the third embodiment. In FIG. 12, the vertical axis indicates the torque acting on the damper device 1. The horizontal axis represents the twist angle from the state where no external force acts on the drive plate 2 and the driven plate 4.
図12に示すように、第3の実施形態において、ダンパ装置1のトルクに対する捩れ角のグラフは、捩れ角に応じて直列領域F1、第1のクッション領域F2A、第2のクッション領域F2B、及び当接領域F3の三つの領域を有する。直列領域F1、第1のクッション領域F2A、第2のクッション領域F2B、及び当接領域F3における、ダンパ装置1の固有角振動数はそれぞれ異なる。
As shown in FIG. 12, in the third embodiment, the graph of the twist angle with respect to the torque of the damper device 1 includes the series region F1, the first cushion region F2A, the second cushion region F2B, and the like according to the twist angle. It has three areas of contact area F3. In the series region F1, the first cushion region F2A, the second cushion region F2B, and the contact region F3, the natural angular frequency of the damper device 1 is different.
ダンパ装置1に作用するトルクが増大することで捩れ角θtが第1の当接捩れ角θt1に到達すると、ダンパ装置1は、直列領域F1から第1のクッション領域F2Aに変移する。第1のクッション領域F2Aにおけるトルクに対する捩れ角のグラフの傾きは、直列領域F1おけるトルクに対する捩れ角θtのグラフの傾きよりよりも大きい。すなわち、第1のクッション領域F2Aにおけるダンパ装置1の捩れ剛性は、直列領域F1におけるダンパ装置1の捩れ剛性よりも高い。
When the torque acting on the damper device 1 increases and the twist angle θt reaches the first contact twist angle θt1, the damper device 1 changes from the series region F1 to the first cushion region F2A. The inclination of the graph of the twist angle with respect to the torque in the first cushion region F2A is larger than the slope of the graph of the twist angle θt with respect to the torque in the series region F1. That is, the torsional rigidity of the damper device 1 in the first cushion region F2A is higher than the torsional rigidity of the damper device 1 in the series region F1.
捩れ角θtが第1の当接捩れ角θt1に到達すると、第1のシート6の凸部63が、クッション8の第1のガイド82に当接する。さらに、第2のシート7の凸部72が、クッション8の第2のガイド83に当接する。すなわち、第1のクッション領域F2Aにおいて、第1及び第2のシート6,7は、クッション8に接触する。
When the twist angle θt reaches the first contact twist angle θt1, the convex portion 63 of the first seat 6 comes into contact with the first guide 82 of the cushion 8. Further, the convex portion 72 of the second seat 7 abuts on the second guide 83 of the cushion 8. That is, the first and second seats 6 and 7 are in contact with the cushion 8 in the first cushion region F2A.
中間プレート3に対してドリブンプレート4が相対的に1/2θt1より大きく回転することにより、中間プレート3に支持される第2のシート7Aと、ドリブンプレート4に支持される第1のシート6Bとが、トーションスプリング5の伸縮方向にクッション8Aを圧縮する。これにより、クッション材81の第1の圧縮部87が弾性的に圧縮される。一方、第1のクッション領域F2Aにおいて、二つの第2の圧縮部88は互いに離間する。
When the driven plate 4 rotates relative to the intermediate plate 3 by more than 1 / 2θt1, the second sheet 7A supported by the intermediate plate 3 and the first sheet 6B supported by the driven plate 4 However, the cushion 8A is compressed in the expansion and contraction direction of the torsion spring 5. Thereby, the 1st compression part 87 of the cushioning material 81 is compressed elastically. On the other hand, in the first cushion region F2A, the two second compression portions 88 are separated from each other.
ドライブプレート2に対して中間プレート3が相対的に1/2θt1より大きく回転することにより、中間プレート3に支持される第2のシート7Bと、ドリブンプレート4に支持される第1のシート6Aとが、トーションスプリング5の伸縮方向にクッション8Bを圧縮する。これにより、クッション材81の第1の圧縮部87が弾性的に圧縮される。一方、第1のクッション領域F2Aにおいて、二つの第2の圧縮部88は互いに離間する。
By rotating the intermediate plate 3 relatively larger than 1 / 2θt1 with respect to the drive plate 2, the second sheet 7B supported by the intermediate plate 3 and the first sheet 6A supported by the driven plate 4 However, the cushion 8B is compressed in the expansion / contraction direction of the torsion spring 5. Thereby, the 1st compression part 87 of the cushioning material 81 is compressed elastically. On the other hand, in the first cushion region F2A, the two second compression portions 88 are separated from each other.
第1のクッション領域F2Aは、直列に接続された第1のトーションスプリング51及び第2のトーションスプリング52と、直列に接続されたクッション8A及びクッション8Bのそれぞれの第1の圧縮部87とがエンジンの回転変動を減衰させる領域である。すなわち、第1のクッション領域F2Aにおいて、四つのトーションスプリング5と、四つのクッション8の第1の圧縮部87とが、ともに伸縮可能である。
The first cushion region F2A includes the first torsion spring 51 and the second torsion spring 52 connected in series, and the first compression portions 87 of the cushion 8A and the cushion 8B connected in series. This is a region for attenuating the rotational fluctuation of the. That is, in the first cushion region F2A, the four torsion springs 5 and the first compression portions 87 of the four cushions 8 can both expand and contract.
ダンパ装置1に作用するトルクが増大することで捩れ角θtが第3の当接捩れ角θt3に到達すると、ダンパ装置1は、第1のクッション領域F2Aから第2のクッション領域F2Bに変移する。第2のクッション領域F2Bにおけるトルクに対する捩れ角のグラフの傾きは、第1のクッション領域F2Aにおけるトルクに対する捩れ角のグラフの傾きよりよりも大きい。すなわち、第2のクッション領域F2Bにおけるダンパ装置1の捩れ剛性は、第1のクッション領域F2Aにおけるダンパ装置1の捩れ剛性よりも高い。
When the torque acting on the damper device 1 increases and the twist angle θt reaches the third contact twist angle θt3, the damper device 1 changes from the first cushion region F2A to the second cushion region F2B. The inclination of the twist angle graph with respect to the torque in the second cushion region F2B is larger than the inclination of the twist angle graph with respect to the torque in the first cushion region F2A. That is, the torsional rigidity of the damper device 1 in the second cushion region F2B is higher than the torsional rigidity of the damper device 1 in the first cushion region F2A.
捩れ角θtが第3の当接捩れ角θt3に到達すると、二つの第2の圧縮部88が互いに接触する。第3の当接捩れ角θt3は、第1の当接捩れ角θt1より大きく、且つ第2の当接捩れ角θt2よりも小さい。
When the twist angle θt reaches the third contact twist angle θt3, the two second compression portions 88 come into contact with each other. The third contact twist angle θt3 is larger than the first contact twist angle θt1 and smaller than the second contact twist angle θt2.
中間プレート3に対してドリブンプレート4が相対的に第3の当接捩れ角θt3の半分(1/2θt3)より大きく回転することにより、クッション8Aの第1の圧縮部87と、互いに接触した二つの第2の圧縮部88と、が弾性的に圧縮される。1/2θt3は、第5の角度の一例であり、1/2θt1よりも大きく、且つ1/2θt2よりも小さい。
The driven plate 4 rotates relative to the intermediate plate 3 more than half of the third contact twist angle θt3 (1 / 2θt3), so that the first compression portion 87 of the cushion 8A is in contact with each other. The two second compression portions 88 are elastically compressed. 1 / 2θt3 is an example of the fifth angle, and is larger than 1 / 2θt1 and smaller than 1 / 2θt2.
ドライブプレート2に対して中間プレート3が相対的に1/2θt3より大きく回転することにより、クッション8Bの第1の圧縮部87と、互いに接触した二つの第2の圧縮部88と、が弾性的に圧縮される。
By rotating the intermediate plate 3 relatively larger than 1 / 2θt3 relative to the drive plate 2, the first compression portion 87 of the cushion 8B and the two second compression portions 88 in contact with each other are elastic. Is compressed.
第2のクッション領域F2Bは、直列に接続された第1のトーションスプリング51及び第2のトーションスプリング52と、直列に接続されたクッション8A及びクッション8Bのそれぞれの第1及び第2の圧縮部87,88とがエンジンの回転変動を減衰させる領域である。すなわち、第2のクッション領域F2Bにおいて、四つのトーションスプリング5と、四つのクッション8の第1及び第2の圧縮部87,88とが、ともに伸縮可能である。
The second cushion region F2B includes a first torsion spring 51 and a second torsion spring 52 connected in series, and first and second compression portions 87 of the cushion 8A and the cushion 8B connected in series, respectively. , 88 are areas in which engine rotation fluctuations are attenuated. That is, in the second cushion region F2B, the four torsion springs 5 and the first and second compression portions 87 and 88 of the four cushions 8 can both expand and contract.
ダンパ装置1に作用するトルクが増大することで捩れ角が第2の当接捩れ角θt2に到達すると、ダンパ装置1は、第2のクッション領域F2Bから当接領域F3に変移する。第1の実施形態と同じく、捩れ角θtが第2の当接捩れ角θt2に到達すると、第1のガイド82と第2のガイド83とが互いに当接する。
When the torque acting on the damper device 1 increases and the twist angle reaches the second contact twist angle θt2, the damper device 1 changes from the second cushion region F2B to the contact region F3. As in the first embodiment, when the twist angle θt reaches the second contact twist angle θt2, the first guide 82 and the second guide 83 contact each other.
以上説明された第3の実施形態のダンパ装置1において、クッション材81の二つの第2の圧縮部88は、中間プレート3に対してドリブンプレート4が回転方向の一方側に1/2θt1よりも大きく且つ1/2θt2よりも小さい1/2θt3よりも大きく回転することにより互いに接触した状態で弾性的に圧縮される。これにより、中間プレート3に対するドリブンプレート4の回転角度が1/2θt1までの間、第1のトーションスプリング51が圧縮され、回転角度が1/2θt1より大きく且つ1/2θt3よりも小さい間、第1のトーションスプリング51と第1の圧縮部87とが圧縮され、回転角度が1/2θt3より大きく且つ1/2θt2より小さい間、第1のトーションスプリング51と第1及び第2の圧縮部87,88とが圧縮される。このように、ダンパ装置1が回転角度に応じて複数の剛性を有することが可能となる。
In the damper device 1 according to the third embodiment described above, the two second compression portions 88 of the cushion material 81 are configured such that the driven plate 4 is on the one side in the rotational direction with respect to the intermediate plate 3 than 1 / 2θt1. By being larger and larger than ½θt3 smaller than ½θt2, they are elastically compressed in contact with each other. As a result, the first torsion spring 51 is compressed while the rotational angle of the driven plate 4 with respect to the intermediate plate 3 is up to 1 / 2θt1, and the first torsional spring 51 is compressed while the rotational angle is larger than 1 / 2θt1 and smaller than 1 / 2θt3. The first torsion spring 51 and the first and second compression portions 87 and 88 are compressed while the torsion spring 51 and the first compression portion 87 are compressed and the rotation angle is larger than 1 / 2θt3 and smaller than 1 / 2θt2. And are compressed. Thus, it becomes possible for the damper apparatus 1 to have several rigidity according to a rotation angle.
(第4の実施形態)
以下に、第4の実施形態について、図13を参照して説明する。図13は、第4の実施形態に係るダンパ装置1の一例の一部を示す断面図である。図13に示すように、第4の実施形態において、クッション8は第1のシート6と一体に形成される。 (Fourth embodiment)
Hereinafter, the fourth embodiment will be described with reference to FIG. FIG. 13 is a cross-sectional view illustrating a part of an example of thedamper device 1 according to the fourth embodiment. As shown in FIG. 13, in the fourth embodiment, the cushion 8 is formed integrally with the first seat 6.
以下に、第4の実施形態について、図13を参照して説明する。図13は、第4の実施形態に係るダンパ装置1の一例の一部を示す断面図である。図13に示すように、第4の実施形態において、クッション8は第1のシート6と一体に形成される。 (Fourth embodiment)
Hereinafter, the fourth embodiment will be described with reference to FIG. FIG. 13 is a cross-sectional view illustrating a part of an example of the
第1のシート6の凸部63の代わりに、第1のガイド82が設けられる。第1のガイド82は、第1のシート6の支持壁61と一体に形成される。第4の実施形態において、第1のガイド82を含む第1のシート6が、第1のストッパ部の一例である。
A first guide 82 is provided instead of the convex portion 63 of the first sheet 6. The first guide 82 is formed integrally with the support wall 61 of the first sheet 6. In the fourth embodiment, the first sheet 6 including the first guide 82 is an example of a first stopper portion.
第1のガイド82を含む第1のシート6は、ドリブンプレート4とトーションスプリング5との間に介在し、当該トーションスプリング5を支持する。第1のガイド82は、トーションスプリング5の内部に挿入され、トーションスプリング5が径方向及び軸方向に移動することを制限する。
The first seat 6 including the first guide 82 is interposed between the driven plate 4 and the torsion spring 5 and supports the torsion spring 5. The first guide 82 is inserted into the torsion spring 5 and restricts the torsion spring 5 from moving in the radial direction and the axial direction.
第2のガイド83は、クッション材81を介して第1のシート6に接続される。捩れ角θtが第1の当接捩れ角θt1に到達すると、第2のガイド83は、第2のシート7の凸部72に接触する。
The second guide 83 is connected to the first seat 6 via the cushion material 81. When the twist angle θt reaches the first contact twist angle θt 1, the second guide 83 comes into contact with the convex portion 72 of the second sheet 7.
さらに、第4の実施形態の第2のシート7は、覆部77をさらに有する。覆部77は、支持壁71から、周方向に延びる。覆部77は、トーションスプリング5の一部を、径方向外側から覆う。覆部77は、トーションスプリング5が遠心力により径方向外側に撓むと、当該トーションスプリング5に接触し、トーションスプリング5が径方向外側に移動することを制限する。
Furthermore, the second sheet 7 of the fourth embodiment further has a cover 77. The cover 77 extends from the support wall 71 in the circumferential direction. The cover 77 covers a part of the torsion spring 5 from the radially outer side. When the torsion spring 5 bends radially outward due to centrifugal force, the cover 77 contacts the torsion spring 5 and restricts the torsion spring 5 from moving radially outward.
捩れ角θtが第2の当接捩れ角θt2に到達したとき、第1のガイド82と第2のガイド83とが互いに接触する。さらに、捩れ角θtが第2の当接捩れ角θt2に到達したとき、第1のシート6の覆部64と、第2のシート7の覆部77とが接触しても良い。第1のシート6の覆部64と、第2のシート7の覆部77とは、例えば、ドリブンプレート4が中間プレート3に対して相対的に回転することを制限する。
When the twist angle θt reaches the second contact twist angle θt2, the first guide 82 and the second guide 83 come into contact with each other. Further, when the twist angle θt reaches the second contact twist angle θt2, the cover portion 64 of the first sheet 6 and the cover portion 77 of the second sheet 7 may contact each other. The cover part 64 of the first sheet 6 and the cover part 77 of the second sheet 7 limit, for example, that the driven plate 4 rotates relative to the intermediate plate 3.
以上説明された第4の実施形態のダンパ装置1において、第1のガイド82を含む第1のシート6は、ドリブンプレート4とトーションスプリング5との間に介在し、トーションスプリング5を支持する。これにより、トーションスプリング5とクッション材81との相対的な位置が変化することが抑制され、トーションスプリング5とクッション材81とが接触することが抑制される。
In the damper device 1 of the fourth embodiment described above, the first seat 6 including the first guide 82 is interposed between the driven plate 4 and the torsion spring 5 and supports the torsion spring 5. Thereby, it is suppressed that the relative position of the torsion spring 5 and the cushion material 81 changes, and it is suppressed that the torsion spring 5 and the cushion material 81 contact.
第4の実施形態において、クッション8は、第1のシート6と一体に形成された。しかし、クッション8は、第2のシート7と一体に形成されても良い。この場合、第1のガイド82を含む第2のシート7が、第1のガイドの一例である。
In the fourth embodiment, the cushion 8 is formed integrally with the first seat 6. However, the cushion 8 may be formed integrally with the second seat 7. In this case, the second sheet 7 including the first guide 82 is an example of the first guide.
以上複数の実施形態において、直列領域F1、クッション領域F2(第1のクッション領域F2A、第2のクッション領域F2B)、及び当接領域F3が設定される。これらの領域に変移する捩れ角θtは、例えば、トーションスプリング5及びクッション材81のヤング率や、トーションスプリング5の予圧縮や、第1及び第2のシート6,7の長さや、第1及び第2のガイド82,83の長さによって調整され得る。
In the plurality of embodiments, the series region F1, the cushion region F2 (first cushion region F2A, second cushion region F2B), and the contact region F3 are set. The torsion angle θt that shifts to these regions includes, for example, the Young's modulus of the torsion spring 5 and the cushion material 81, the pre-compression of the torsion spring 5, the lengths of the first and second seats 6 and 7, It can be adjusted according to the length of the second guides 82 and 83.
以上、本発明の実施形態を例示したが、上記実施形態および変形例はあくまで一例であって、発明の範囲を限定することは意図していない。上記実施形態や変形例は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、組み合わせ、変更を行うことができる。また、各実施形態や各変形例の構成や形状は、部分的に入れ替えて実施することも可能である。
As mentioned above, although embodiment of this invention was illustrated, the said embodiment and modification are an example to the last, Comprising: It is not intending limiting the range of invention. The above-described embodiments and modifications can be implemented in various other forms, and various omissions, replacements, combinations, and changes can be made without departing from the scope of the invention. In addition, the configuration and shape of each embodiment and each modification may be partially exchanged.
Claims (5)
- 回転中心まわりに回転可能な第1の回転体と、
前記回転中心まわりに回転可能な第2の回転体と、
前記第1の回転体と前記第2の回転体との間に位置し、前記第2の回転体に対して前記第1の回転体が相対的に回転方向の一方側に回転することにより弾性的に圧縮される第1のコイルスプリングと、
前記第1のコイルスプリングの中に配置され、前記第2の回転体に対して前記第1の回転体が相対的に回転方向の一方側に第1の角度よりも大きく回転することにより弾性的に圧縮される第1のクッション材と、
前記第1のコイルスプリングの中に配置され、前記第1のクッション材を保持する第1のストッパ部と、
前記第1のコイルスプリングの中に配置され、前記第1のコイルスプリングの伸縮方向において前記第1のストッパ部に対して接近及び離間可能に前記第1のクッション材を保持し、前記第2の回転体に対して前記第1の回転体が前記回転方向の一方側に前記第1の角度よりも大きい第2の角度まで回転した状態で前記第1のストッパ部に接触して、前記第1の回転体が前記第2の回転体に対して前記回転方向の一方側に相対的に回転することを制限する、第2のストッパ部と、
を具備するダンパ装置。 A first rotating body rotatable around a center of rotation;
A second rotating body rotatable around the rotation center;
It is located between the first rotator and the second rotator, and the first rotator rotates relative to the second rotator relative to one side in the rotation direction. A first coil spring that is compressed automatically;
It is arranged in the first coil spring and is elastic when the first rotating body rotates relative to the second rotating body relative to one side in the rotational direction more than the first angle. A first cushion material compressed into
A first stopper that is disposed in the first coil spring and holds the first cushion material;
The first cushion member is disposed in the first coil spring, holds the first cushion material so as to be able to approach and separate from the first stopper portion in the expansion and contraction direction of the first coil spring, and the second coil spring. The first rotating body comes into contact with the first stopper portion in a state where the first rotating body rotates to one side of the rotating direction to a second angle larger than the first angle with respect to the rotating body, A second stopper portion that restricts relative rotation of the rotating body of the rotating body relative to the second rotating body to one side in the rotational direction;
A damper device comprising: - 前記回転中心まわりに回転可能な第3の回転体と、
前記第2の回転体と前記第3の回転体との間に位置し、前記第3の回転体に対して前記第2の回転体が相対的に回転方向の一方側に回転することにより弾性的に圧縮される第2のコイルスプリングと、
前記第2のコイルスプリングの中に配置され、前記第3の回転体に対して前記第2の回転体が相対的に回転方向の一方側に第3の角度よりも大きく回転することにより弾性的に圧縮される第2のクッション材と、
前記第2のコイルスプリングの中に配置され、前記第2のクッション材を保持する第3のストッパ部と、
前記第2のコイルスプリングの中に配置され、前記第2のコイルスプリングの伸縮方向において前記第3のストッパ部に対して接近及び離間可能に前記第2のクッション材を保持し、前記第3の回転体に対して前記第2の回転体が前記回転方向の一方側に前記第3の角度よりも大きい第4の角度まで回転した状態で前記第3のストッパ部に接触して、前記第2の回転体が前記第3の回転体に対して前記回転方向の一方側に相対的に回転することを制限する、第4のストッパ部と、
をさらに具備する、請求項1のダンパ装置。 A third rotating body rotatable around the rotation center;
It is located between the second rotator and the third rotator, and the second rotator rotates relative to the third rotator relative to one side in the rotation direction. A second coil spring to be compressed,
It is arranged in the second coil spring, and is elastic when the second rotating body rotates relative to the third rotating body relative to one side in the rotational direction more than a third angle. A second cushion material compressed into
A third stopper portion disposed in the second coil spring and holding the second cushion material;
The second cushion material is disposed in the second coil spring, holds the second cushion material so as to be able to approach and separate from the third stopper portion in the expansion and contraction direction of the second coil spring, and The second rotating body contacts the third stopper portion in a state where the second rotating body rotates to one side of the rotating direction to a fourth angle larger than the third angle with respect to the rotating body, A fourth stopper portion that restricts the rotation body of the first rotation body relative to the third rotation body from rotating relative to one side in the rotation direction;
The damper device according to claim 1, further comprising: - 前記第1のクッション材は、前記第1のコイルスプリングに向く側面を有し、
前記第1のストッパ部は、前記第1のクッション材の前記側面の一部を囲み、前記第1のコイルスプリングと前記第1のクッション材の前記側面との間に位置し、
前記第2のストッパ部は、前記第1のクッション材の前記側面の一部を囲み、前記第1のコイルスプリングと前記第1のクッション材の前記側面との間に位置する、
請求項1又は請求項2のダンパ装置。 The first cushion material has a side surface facing the first coil spring,
The first stopper portion surrounds a part of the side surface of the first cushion material, and is positioned between the first coil spring and the side surface of the first cushion material,
The second stopper portion surrounds a part of the side surface of the first cushion material, and is positioned between the first coil spring and the side surface of the first cushion material.
The damper device according to claim 1 or 2. - 前記第1のクッション材は、前記第2の回転体に対して前記第1の回転体が相対的に回転方向の一方側に前記第1の角度よりも大きく回転することにより弾性的に圧縮される第1の圧縮部と、前記第1のコイルスプリングの伸縮方向において互いに接近及び離間可能であり、前記第2の回転体に対して前記第1の回転体が前記回転方向の一方側に前記第1の角度よりも大きく且つ前記第2の角度よりも小さい第5の角度よりも大きく回転することにより互いに接触した状態で弾性的に圧縮される、二つの第2の圧縮部と、を有する、請求項1乃至請求項3のいずれか一つのダンパ装置。 The first cushion member is elastically compressed when the first rotating body rotates relative to the second rotating body relative to one side in the rotational direction more than the first angle. The first rotating part can be moved toward and away from each other in the expansion / contraction direction of the first coil spring, and the first rotating body is located on one side of the rotating direction with respect to the second rotating body. Two second compression portions that are elastically compressed in contact with each other by rotating larger than a fifth angle that is larger than the first angle and smaller than the second angle. The damper device according to any one of claims 1 to 3.
- 前記第1のストッパ部は、前記第1の回転体又は前記第2の回転体と前記第1のコイルスプリングとの間に介在し、前記第1のコイルスプリングを支持する、請求項1乃至請求項4のいずれか一つのダンパ装置。 The first stopper portion is interposed between the first rotating body or the second rotating body and the first coil spring, and supports the first coil spring. Item 5. The damper device according to any one of items 4.
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JPH09506420A (en) * | 1994-10-03 | 1997-06-24 | ヴァレオ | Torsion damping device |
JP2000205339A (en) * | 1999-01-19 | 2000-07-25 | Exedy Corp | Elastic float body |
JP2000205338A (en) * | 1999-01-19 | 2000-07-25 | Exedy Corp | Damper disc assembly |
JP2002106640A (en) * | 2000-09-29 | 2002-04-10 | Exedy Corp | Damper mechanism |
JP2004183871A (en) * | 2002-12-06 | 2004-07-02 | Exedy Corp | Spring, spring assembly, and damper mechanism |
EP1936232A2 (en) * | 2006-12-18 | 2008-06-25 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Torsional vibration damper |
-
2016
- 2016-12-13 JP JP2016241250A patent/JP2018096448A/en active Pending
-
2017
- 2017-08-22 WO PCT/JP2017/029928 patent/WO2018109980A1/en active Application Filing
- 2017-08-22 CN CN201790001498.0U patent/CN210290600U/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09506420A (en) * | 1994-10-03 | 1997-06-24 | ヴァレオ | Torsion damping device |
JP2000205339A (en) * | 1999-01-19 | 2000-07-25 | Exedy Corp | Elastic float body |
JP2000205338A (en) * | 1999-01-19 | 2000-07-25 | Exedy Corp | Damper disc assembly |
JP2002106640A (en) * | 2000-09-29 | 2002-04-10 | Exedy Corp | Damper mechanism |
JP2004183871A (en) * | 2002-12-06 | 2004-07-02 | Exedy Corp | Spring, spring assembly, and damper mechanism |
EP1936232A2 (en) * | 2006-12-18 | 2008-06-25 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Torsional vibration damper |
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