WO2011158787A1 - ステアリングコラムの支持装置 - Google Patents
ステアリングコラムの支持装置 Download PDFInfo
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- WO2011158787A1 WO2011158787A1 PCT/JP2011/063501 JP2011063501W WO2011158787A1 WO 2011158787 A1 WO2011158787 A1 WO 2011158787A1 JP 2011063501 W JP2011063501 W JP 2011063501W WO 2011158787 A1 WO2011158787 A1 WO 2011158787A1
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- WIPO (PCT)
- Prior art keywords
- steering column
- hole
- plate portion
- support
- drop
- Prior art date
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D1/00—Steering controls, i.e. means for initiating a change of direction of the vehicle
- B62D1/02—Steering controls, i.e. means for initiating a change of direction of the vehicle vehicle-mounted
- B62D1/16—Steering columns
- B62D1/18—Steering columns yieldable or adjustable, e.g. tiltable
- B62D1/19—Steering columns yieldable or adjustable, e.g. tiltable incorporating energy-absorbing arrangements, e.g. by being yieldable or collapsible
- B62D1/195—Yieldable supports for the steering column
Definitions
- This invention relates to an improvement in a steering column support device for supporting a steering column constituting a steering device for giving a steering angle to a steering wheel of a vehicle with respect to a vehicle body.
- the vehicle steering device is a device for arbitrarily changing the traveling direction of the vehicle.
- the rotation of the steering wheel 1 is input to the steering gear unit 2 as shown in FIG. 3 and a pair of left and right tie rods 4 are pushed and pulled with the rotation of the input shaft 3 to give a steering angle to the front wheels.
- the steering wheel 1 is supported and fixed to the rear end portion of the steering shaft 5, and the steering shaft 5 is rotatably supported by the steering column 6 with the cylindrical steering column 6 inserted in the axial direction.
- the front end portion of the steering shaft 5 is connected to the rear end portion of the intermediate shaft 8 via a universal joint 7, and the front end portion of the intermediate shaft 8 is connected to the input shaft 3 via another universal joint 9. ing.
- a tilt mechanism for adjusting the vertical position of the steering wheel 1 a telescopic mechanism for adjusting the front-rear position, and the electric motor 10 as an auxiliary power source are used to operate the steering wheel 1. It incorporates an electric power steering device that reduces power.
- the steering column 6 has a structure in which the outer column 11 and the inner column 12 are telescopically expanded and contracted, and the steering shaft 5 includes the outer tube 13 and the inner shaft. 14 is configured to be able to transmit torque and expand and contract by spline engagement or serration engagement.
- the intermediate portion of the steering column 6a is interposed via the tilt rod 19.
- the support bracket 18 is supported by the support bracket 18 so that the support bracket 18 drops off when a large forward force is applied to the vehicle body 15.
- the support bracket 18 is integrally formed by welding and fixing one top plate 20 formed by bending a metal plate having sufficient strength and rigidity such as a steel plate and a pair of left and right side plates 21 and 21 'by welding or the like. Is.
- each attachment plate portion 22 is provided with a notch 23 that opens at the rear edge of the attachment plate portion 22.
- the support capsule 16 is assembled
- the support capsule 16 is manufactured by injection molding a synthetic resin or die casting a light alloy. The support capsule 16 is supported with respect to the mounting plate portion 22 by engaging the locking grooves 25 formed on both left and right side surfaces with both side portions of the notch 23 with a part of the mounting plate portion 22. ing.
- the rear part of the front inner column 12a and the front part of the rear outer column 11a are fitted in a telescope shape, thereby enabling axial displacement.
- the steering column 6a can be expanded and contracted.
- the rear part of the front inner shaft 14a and the front part of the rear outer shaft 13a are engaged with each other so as to be capable of axial displacement and torque transmission.
- the outer shaft 13a is supported on the inner side of the outer column 11a by a bearing capable of supporting a radial load and a thrust load, such as a deep groove ball bearing, so that only the rotation is possible.
- the steering wheel 1 is supported and fixed at a portion protruding rearward from the rear end opening of the outer column 11a at the rear end of the outer shaft 13a.
- the front end portion of the inner column 12a is caused to swing up and down with respect to the vehicle body by a horizontal shaft 32 (see FIG. 18) inserted through the distal end portion of the support arm portion 31 fixed to the speed reducer case 30. Supported as possible.
- the front part of the outer column 11a is sandwiched between the side plates 21 and 21 'constituting the support bracket 18 so that the vertical position and the front / rear position of the steering wheel 1 can be adjusted.
- the outer column 11a is manufactured by die casting of a light alloy, and a sandwiched portion 33 is provided on the lower surface of the front portion so as to protrude downward.
- a slit portion 34 is provided in the central portion in the width direction of the sandwiched portion 33 so that the diameter of the front portion of the outer column 11a can be elastically expanded and reduced.
- a pair of telescopic long holes 35 that are long in the axial direction of the outer column 11a are formed in a state of being aligned with each other with the slit portion 34 interposed therebetween.
- long side tilt holes 36a and 36b that are partially arc-shaped around the horizontal axis 32 and that are long in the vertical direction are formed in the side plates 21 and 21 'so as to align with each other.
- the tilt long holes 36a and 36b and the telescopic long holes 35 are combined in a state of crossing each other, and the tilt rod 19 is inserted through these long holes.
- the tilt rod 19 is composed of a pair of substantially flat portions formed on a part of both sides in the width direction of the outer peripheral surface of the outward flange-shaped flange portion 37 provided at the base end portion (the right end portion in FIG. 20) and a long slot for tilting.
- the side edge of 36a is engaged. Therefore, the tilt rod 19 does not rotate around its own central axis, but it can freely move up and down along the long slots for tilt 36a, 36b.
- the outer column 11a can be displaced in the front-rear direction within a range in which the tilt rod 19 can be displaced in the telescopic elongated holes 35 on both sides with respect to the support bracket 18 on which the tilt rod 19 is installed.
- a thrust is sequentially provided between the nut 38 fixed to the tip end portion (left end portion in FIG. 20) of the tilt rod 19 and the outer surface of one side plate 21 ′ (left side in FIG. 20) from the nut 38 side.
- a bearing 39, a base end portion of the adjusting lever 40, and a cam mechanism 41 are provided.
- one cam plate element 42a facing one side plate 21 ' is a side edge of a long slot 36b for tilt formed in the side plate 21'. In the state where the rotation is prevented by the engagement with the tilting hole 36b, it is possible to move up and down along the long slot 36b for tilting.
- the other cam plate element 42b is engaged with the base end portion of the adjusting lever 40 in a state in which relative displacement is prevented.
- the cam plate element 42b rotates based on the swing of the adjusting lever 40, and the one cam plate is engaged. Based on the engagement with the element 42a, the thickness dimension of the cam mechanism 41 in the axial direction is enlarged or reduced.
- the support bracket 18 is supported with respect to the vehicle body by bolts or studs inserted through the through holes 43 formed in the support capsule 16.
- the thickness of the cam mechanism 41 in the axial direction is reduced by swinging and moving the adjustment lever 40 in a predetermined direction.
- the distance between the pair of side plates 21, 21 ′ constituting the support bracket 18 increases, and the diameter of the outer column 11 a increases.
- the vertical position of the steering wheel 1 can be adjusted within a range in which the tilt rod 19 can be displaced along the long tilt holes 36a and 36b.
- the front / rear position of the steering wheel 1 can be adjusted within a range in which the tilt rod 19 can be displaced in the telescopic slot 35.
- the adjustment lever 40 is oscillated and displaced in the reverse direction.
- the thickness of the cam mechanism 41 in the axial direction is increased, the distance between the side plates 21 and 21 'is reduced, the diameter of the outer column 11a is reduced, and the steering wheel 1 is held at the adjusted position.
- a balance spring 44 is provided between the support bracket 18 and the tilt rod 19 to support the weight of the portion that moves up and down together with the tilt rod 19, and when the steering wheel 1 is adjusted, the steering wheel 1 can be moved with great force. There is no need to support it.
- the steering column 6a is not supported by the vehicle body 15 in a state after the support capsule 16 has fallen backward from the notch 23 due to a secondary collision. In this state, the position of the steering wheel 1 is not fixed, and it becomes difficult to give an appropriate steering angle to the steered wheels by the steering wheel 1.
- the vehicle must be pushed back to the shoulder. There may be no. In such a case, it is not preferable that proper steering by the steering wheel 1 cannot be performed.
- Patent Document 5 a shock absorbing member provided in the front-rear direction on the steering column side is inserted between members fixed on the vehicle body side, and the steering wheel is displaced forward in accordance with a secondary collision. Even so, a structure that can prevent the steering column from falling downward is described.
- the steering column in the state after the secondary collision, the steering column is suspended through the shock absorbing member, so the structure is complicated, and the height dimension (vertical dimension) of the steering column device is In addition to being bulky, it is considered that the support rigidity of the steering column is considerably lower than that in the normal state after the secondary collision.
- a force in the direction of tilting the steering column is often applied from the driver's body to the steering column. In such a case, a shock absorbing member and a member fixed to the vehicle body side There is a possibility that the relative displacement of the steering column is not smoothly performed, the forward displacement of the steering column is not smoothly performed, or any of these members is damaged.
- Patent Document 6 describes a structure in which a steering column is suspended by a slider provided on the steering column side and a guide rail provided on the vehicle body side so as to be slidable in the axial direction. Such a structure can also prevent the steering column from falling after the secondary collision.
- the structure described in Patent Document 6 is more complicated than the structure described in Patent Document 5 and the height dimension of the steering column device increases. Further, when a force in the direction of tilting the steering column is applied during the secondary collision, it is considered that the same problem as the structure described in Patent Document 5 occurs.
- the object of the present invention is to suppress the increase in the height dimension and to ensure the function of smoothly moving the steering column forward at the time of the secondary collision, while ensuring the secondary
- An object of the present invention is to provide a structure capable of preventing the steering column from falling even when the steering column is displaced forward together with the steering wheel due to a collision.
- the steering column support device of the present invention includes a non-drop-off side bracket, a drop-off side bracket, and a pair of coupling members and support capsules.
- the non-drop-off bracket is supported and fixed to the vehicle body above the axial middle portion of the steering column, and includes a top plate portion and a pair of long holes.
- the top plate portion is provided in the axial direction of the steering column.
- the elongated holes are formed in a part of the top plate portion so as to extend in parallel to each other and in the axial direction of the steering column.
- the drop-off side bracket is supported by an intermediate portion in the axial direction of the steering column.
- the dropout side bracket includes a lower plate portion and a pair of mounting holes.
- the lower plate portion is provided with the upper surface facing the lower surface of the top plate portion.
- the mounting hole is formed in a part of the lower plate portion which is aligned with the rear end portion of the long hole.
- the support capsules are installed at the rear end portions of the long holes so that they can be displaced forward along the long holes based on a forward impact load applied to the support capsules. ing.
- a locking pin that can be broken by an impact load in a shearing direction is spanned between the locking holes formed at positions where the support capsule and the top plate portion are aligned with each other. Further, the support capsule is prevented from coming out from the elongated hole in the thickness direction (vertical direction) of the top plate portion.
- the drop-off bracket is coupled to the support capsule by the coupling member inserted through the mounting hole and a through hole provided in a state of penetrating the support capsule in the vertical direction.
- the steering column support device of the present invention When implementing the steering column support device of the present invention as described above, for example, it has a width dimension slightly smaller than the width dimension of the slot, and the support capsule is displaced in the longitudinal direction in the slot. It is assumed that a guide portion that can be engaged and a flange portion that is provided in an upper portion of the guide portion and has a width dimension larger than the width dimension of the long hole are provided. And this collar part and the said lower board part are located in the both-sides part of the said long hole among this top plate parts regarding the thickness direction of the said top board part, and the said support capsule is made into these long holes. It is installed so as to be able to be displaced along and not to escape from these long holes in the thickness direction of the top plate portion.
- the coupling member is installed on the lower surface of the lower plate portion and the bolt inserted through the through hole and the mounting hole from above and screwed to these bolts. It can be constituted by a nut that is provided.
- the coupling member is inserted through the attachment hole and the through hole from below, the lower end is supported by the lower surface of the lower plate portion, and the upper end protrudes above the upper surface of the support capsule. , Studs and nuts screwed onto the upper ends of these studs.
- the coupling member is inserted through the attachment hole and the through hole from below, the lower end is supported by the lower surface of the lower plate portion, and the upper end protrudes above the upper surface of the support capsule.
- the connecting pin and a retaining ring locked to the upper end of the connecting pin can be used.
- the through-hole of the support capsule is configured such that the cross-sectional area of the upper part is larger than the cross-sectional area of the lower part, and the coupling member is formed between the mounting hole and the through-hole.
- a portion that is formed by injection-molding synthetic resin in a state of being spanned between the mounting hole and the through-hole, and that protrudes below the lower surface of the lower plate portion at the lower end portion of the columnar member The second flange portion having an outward flange shape is formed on the top plate portion between the second flange portion and a portion of the upper end portion of the columnar member that exists in the upper portion of the through hole. You may make it clamp from.
- the support capsule is made of a light alloy such as an aluminum alloy
- the locking pin is made of a light alloy or a synthetic resin.
- the light alloy locking pins can be mounted in these locking holes by driving a pin-shaped one into each of the locking holes.
- the locking pin made of synthetic resin can be mounted in these locking holes by injection molding thermoplastic synthetic resin in each of the locking holes.
- the support capsule is made of a synthetic resin.
- these support capsules are injection-molded together with the locking pins. That is, in the top plate portion of the non-drop-off side bracket, the portion in the vicinity of the rear end portion of the long hole and the lower plate portion of the drop-off side bracket are set in the cavity for injection molding. Synthetic resin is fed into and insert molded.
- the function of suppressing the increase in the height dimension and smoothly moving the steering column forward at the time of the secondary collision is ensured.
- a structure that can prevent the steering column from falling can be realized.
- FIG. 1 is a side view showing a first example of an embodiment of the present invention in a state before the occurrence of a secondary collision.
- FIG. 2 is a plan view of the center and right side of FIG. 3 is a cross-sectional view taken along the line AA in FIG.
- FIG. 4 is an enlarged view of a portion B in FIG.
- FIG. 5 is an enlarged view of a portion C in FIG. 6 is a view taken in the direction of arrow D in FIG.
- FIG. 7 is a cross-sectional view taken along the line EE of FIG. 4 in a state before the respective parts are joined.
- 8 is a cross-sectional view taken along line FF in FIG. FIG.
- FIG. 9 is a side view showing the first example of the embodiment of the present invention in a state after the occurrence of the secondary collision.
- 10 is a plan view of the center part and the right side part of FIG.
- FIG. 11 is a view similar to FIG. 7, showing a second example of the embodiment of the present invention.
- 12 is a cross-sectional view taken along the line GG in FIG.
- FIG. 13 is a view similar to FIG. 7, showing a third example of the embodiment of the present invention.
- 14 is a cross-sectional view taken along line HH in FIG.
- FIG. 15 is a view similar to FIG. 6, showing a fourth example of the embodiment of the present invention.
- 16 is a cross-sectional view taken along the line II of FIG.
- FIG. 17 is a cross-sectional view taken along the line JJ in FIG.
- FIG. 18 is a side view showing an overall configuration of a conventionally known steering device.
- FIG. 19 is a plan view showing an example of a conventional structure of a steering column support device.
- 20 is a cross-sectional view taken along the line KK of FIG.
- FIGS. 18 to 20 show a first example of an embodiment of the present invention.
- the feature of the present invention, including this example, is that the outer column 11a constituting the steering column 6a can be displaced forward relative to the vehicle body by a forward impact load at the time of a secondary collision, and forwardly moved. It is a structure for supporting in a state where it can be prevented from falling downward even after displacement. Since the structure and operation of other parts related to the steering device are the same as those of the conventional structure described with reference to FIGS. 18 to 20, the same parts are denoted by the same reference numerals, and redundant descriptions are omitted or simplified. Hereinafter, the characteristic part of this example will be mainly described.
- the steering column support device of the present example includes a non-drop-off side bracket 45, a drop-off side bracket 46, a pair of bolts 47 as a coupling member, and a pair of support capsules 16a.
- the non-drop-off side bracket 45 is formed by pressing a metal plate having sufficient strength and rigidity such as a steel plate, and includes a pair of left and right top plate portions 48 and 48 ′, and these top plate portions 48. , 48 ', and a connecting plate portion 49 for connecting the latter half portions of each other.
- the peripheral portions of the top plate portions 48 and 48 ' are bent downward to increase the section modulus of the top plate portions 48 and 48' and sufficiently secure their bending rigidity.
- One top hole 50 and one through hole 51 are formed in each of the top plate portions 48 and 48 '. That is, a pair of long holes 50 and a pair of through holes 51 are provided in the left and right top plate portions 48, 48 ′.
- the non-drop-off bracket 45 is disposed above the intermediate portion in the axial direction of the steering column 6a and is attached to the vehicle body at the lower portion of the dashboard or the like by a bolt or stud (not shown) inserted through the through hole 51. Is supported and fixed.
- the long holes 50 are parallel to each other at positions sandwiching the steering column 6a from both the left and right sides, respectively, and from the portion near the center rear end portion to the front end portion in the axial direction of the steering column 6a. It is arranged so as to extend up to.
- the long hole 50 is formed as a hole closed inside the top plate portion 48.
- the edge of the top plate portion 48 and the long hole 50 are formed as narrow slots.
- the long hole 50 may be formed as a hole opened on the front side of the top plate portion 48.
- FIG. 29 A locking pin portion (not shown) projecting on the back surface side is engaged.
- the outer column 11a is prevented from coming out of the inner column 12a even when the adjustment lever 40 is loosened before the steering device is assembled to the vehicle.
- the support capsule 16a can be displaced forward along the long holes 50 on the rear end portion of the long holes 50 based on a forward impact load applied to the support capsules 16a. Is installed. Therefore, in the case of this example, between the locking hole 52a and the locking hole 52b formed at positions where the support capsule 16a and the top plate portion 48 are aligned with each other, and further after the locking hole 52a and the long hole 50, A locking pin 53 that can be broken by an impact load in the shearing direction is spanned between the recessed portions 62 formed on both sides in the width direction of the end portion.
- these locking pins 53 are made of synthetic resin, and the locking holes 52a and the locking holes 52b and the locking holes 52a and the recessed portions 62 are aligned with each other. It can be formed by injection molding in which a thermoplastic resin is injected into the locking holes 52a and 52b and the recessed portion 62 and solidified. Further, the previously formed locking pin 53 may be pushed and fitted between the locking hole 52a and the locking hole 52b and between the locking hole 52a and the recessed portion 62.
- the dropout side bracket 46 corresponds to the support bracket 18 (see FIGS. 19 to 20) incorporated in the conventional structure, and each of the dropout side brackets 46 is formed by bending a metal plate having sufficient strength and rigidity such as a steel plate. These members are joined and fixed by spot welding or the like. Each pair of left and right lower plate portions 54 and side plates 21a and a pair of mounting holes 55 formed in these lower plate portions 54 are provided. The lower plate portions 54 are connected to each other in a non-separable manner by a connecting portion 56 provided in a front side portion of the connecting plate portion 49 of the non-drop-off side bracket 45.
- Such a drop-off side bracket 46 is supported at the front end portion of the outer column 11a constituting the steering column 6a at the intermediate portion in the axial direction of the steering column 6a.
- the drop-off side bracket 46 is arranged at the front end of the outer column 11a. As in the conventional structure shown in FIG. 20, the vertical position and the front / rear position can be adjusted.
- the lower plate portion 54 protrudes to the left and right sides of the steering column 6a.
- the lower plate portion 54 has the top plate portion 48 via the support capsule 16a and the bolts 47 in a state where the upper surface thereof is opposed to the lower surface of the top plate portion 48 constituting the non-drop-off side bracket 45. Is bound to. Therefore, in this example, the nuts 57 are fitted and supported in the lower openings of the attachment holes 55, and the bolts 47 inserted downward from above the through holes 43 a of the support capsule 16 a and the attachment holes 55 are 57 is screwed and tightened.
- the position of the mounting hole 55 of the drop-off side bracket 46 and the position of the bolt 47 inserted through the mounting hole 55, the position of the through hole 51 for fixing the non-drop-off side bracket 45 to the vehicle body via a bolt or the like It is preferable that they exist in a substantially straight line in the width direction of the vehicle. With this configuration, the degree of rigidity related to the mounting of the steering column 6a to the vehicle body is improved.
- the support capsule 16a is prevented from coming out in the vertical direction, which is the thickness direction of the top plate portion 48, from the long hole 50.
- the width dimension in the left-right direction of the support capsule 16a is wide in the upper half and narrow in the lower half. That is, the width dimension of the lower half portion of the support capsule 16a is made slightly smaller than the width dimension of the long holes 50, and the lower half portions are engaged with these long holes 50 so as to be capable of displacement in the front-rear direction.
- the guide portion 58 is used.
- the upper half part of the support capsule 16 a is a flange part 59 having a width dimension larger than the width dimension of the long hole 50.
- the height dimension h of the guide portion 58 shown in FIGS. 7 to 8 is slightly larger (h> t) than the thickness dimension t of the top plate portion 48. Further, the rear end portion of the flange portion 59 protrudes further backward than the guide portion 58. A part of the locking hole 52 a provided in each of the support capsules 16 a is formed in a portion protruding rearward from the guide portion 58 at the rear end portion of the flange portion 59.
- the lower plate portion 54 of the drop-off side bracket 46 is attached to the top plate portion 48 of the non-drop-off side bracket 45 by the bolt 47 and the nut 57.
- the flange portion 59 and the lower plate portion 54 are located on both sides of the long hole 50 in the top plate portion 48 in the thickness direction of the top plate portion 48.
- a large impact load directed forward is applied to the steering column 6a due to a secondary collision.
- a large force directed forward is applied to the support capsule 16a from the drop-out side bracket 46, which is supported at the intermediate portion in the axial direction of the steering column 6a, via the bolt 47.
- a shearing force is applied to the locking pins 53 that connect the support capsule 16a and the top plate portion 48, and the locking pins 53 are torn.
- the support capsule 16a can be displaced forward along the long hole 50 formed in the top plate portion 48 with respect to the non-drop-off side bracket 45 that is fixed to the vehicle body.
- the dropout side bracket 46 is displaced forward from the state shown in FIGS. 1 to 2 to the state shown in FIGS. 9 to 10 with respect to the non-dropout side bracket 45.
- the support capsule 16a is merely displaced forward along the long hole 50, and does not come out below or above the top plate portion 48. Therefore, even when the steering column 6a is displaced forward while absorbing the impact energy applied to the steering wheel 1 from the driver's body due to the secondary collision, the height position of the steering wheel is Stay in an easy-to-do position. For this reason, it is possible to easily perform the operation of making the vehicle self-run after the collision accident or pushing the vehicle away from the road shoulder.
- a support plate that is originally fixed to the vehicle body side is present in a portion where the non-drop-off bracket 45 is provided to obtain such actions and effects.
- the non-drop-off side bracket 45 is provided in order to implement the steering column support device of this example, if the non-drop-off side bracket 45 is provided instead of the support plate, the height dimension is substantially the same as the previous structure. Can fit. Further, since the non-drop-off side bracket 45 itself has a small height (thickness), even when the non-drop-off side bracket 45 is assembled to the lower surface of the support plate similar to that used in the conventional structure. The increase in the height dimension can be suppressed to a slight level.
- the protrusion amount of the steering column 6a from the lower surface of the dashboard can be kept small in a state where the steering column support device of this example is assembled to the vehicle body. For this reason, the degree of freedom of design for preventing the steering column 6a and the driver's knee from interfering with each other can be increased, and in the event of a collision, the steering column 6a and the driver's knee collide with each other. It is easier to design for preventing the driver from being injured.
- the elongated hole 50 and the support capsule 16a are provided at positions sandwiching the steering column 6a from both the left and right sides, this steering column against a force applied in a direction in which the steering column 6a is inclined at the time of a secondary collision or the like.
- the support rigidity of 6a can be ensured. For this reason, the forward displacement of the steering column 6a can be stably and reliably performed at the time of a secondary collision, and the driver's protection can be enhanced.
- the support capsule 16a is assembled in a pair of long holes 50 provided in the top plate portion 48 so as to be displaced forward in a secondary collision. That is, the support capsule 16a is not used to support the non-drop-off side bracket 45 provided with these top plate portions 48 with respect to the vehicle body. Therefore, these support capsules 16a can be made smaller than in the case of the conventional structure shown in FIGS.
- a through hole 51 for inserting a bolt or the like for attaching the non-drop-off side bracket 45 to the vehicle body is provided separately from the long hole 50. For this reason, the presence of these through holes 51 does not limit the amount of forward displacement of the outer column 11a at the time of the secondary collision.
- the freedom degree of the installation position of these through-holes 51 can also be made high enough.
- the locking pin 53 is disposed rearward of the bolt 47 that is a connecting portion between the non-drop-off side bracket 45 and the drop-off side bracket 46. For this reason, even if a force in an inclined direction is applied to the outer column 11a at the time of a secondary collision, a force for pulling the support capsules 16a forward from the bolts 47 can be effectively applied to the support capsules 16a. As a result, a force in the shearing direction is reliably applied to the locking pin 53, and the outer column 11a can be displaced forward.
- FIG. 11 to 12 show a second example of the embodiment of the present invention.
- the stud 24 is used as a coupling member for coupling and fixing the drop-off side bracket 46 and the support capsule 16a.
- the lower end portion of the stud 24 is supported and fixed to the mounting hole 55 portion of the lower plate portion 54 of the drop-off bracket 46 with the mounting hole 55 inserted upward from below.
- a nut 57a is screwed into a portion projecting upward from the upper surface of the support capsule 16a at the upper end portion of the stud 24. And tighten. Since the configuration and operation of the other parts are the same as those in the first example of the embodiment, the illustration and explanation regarding the equivalent parts are omitted.
- FIG. 13 to 14 show a third example of the embodiment of the present invention.
- a coupling pin 60 is used as a coupling member for coupling and fixing the drop-off side bracket 46 and the support capsule 16a.
- a retaining ring 61 is locked to a portion of the upper end portion of the coupling pin 60 protruding above the upper surface of the support capsule 16a. Since the stud 24 is changed to the coupling pin 60 and the nut 57a is changed to the retaining ring 61, the second embodiment is the same as the second example of the embodiment, and thus the duplicated explanation is omitted.
- [Fourth Example of Embodiment] 15 to 17 show a fourth example of the embodiment of the present invention.
- a synthetic resin columnar member 63 is used as a coupling member for coupling and fixing the drop-off side bracket 46 and the support capsule 16a.
- This columnar member 63 is injected in a state of being spanned between the mounting hole 55 and the through hole 43a inside the mounting hole 55 formed in the lower plate portion 54 constituting the drop-off side bracket 46 and the through hole 43a of the support capsule 16a. It is formed by molding.
- the cross-sectional area of the upper portion of the through hole 43a is made larger than the cross-sectional area of the lower portion, and a second flange having an outward flange shape is formed at the lower end portion of the columnar member 63 and protruding from the lower surface of the lower plate portion 54.
- a portion 64 is formed.
- the top plate part 48 of the non-drop-off side bracket 45 is clamped from both the upper and lower sides between the second flange part 64 and the part existing on the upper part of the through hole 43a at the upper end part of the columnar member 63.
- the support capsule 16a is made of a light alloy, and the locking pin 53 and the columnar member 63 are made of a synthetic resin.
- the support capsule 16a is also made of synthetic resin, and the support capsule 16a, the locking pin 53, and the columnar member 63 can be integrally formed. That is, in the top plate portion 48 of the non-drop-off side bracket 45, the vicinity of the rear end portion of the long hole 50 and the lower plate portion 54 of the drop-off side bracket 46 are set in the cavity for injection molding. Then, synthetic resin is fed into the cavity, and the support capsule 16a is injection-molded (insert-molded) together with the locking pin 53 and the columnar member 63.
- the completed shape is the same as that shown in FIGS. 15 to 17 except that the support capsule 16a, the locking pin 53, and the columnar member 63 are integrated.
- the gist of the present invention is to prevent the position of the steering wheel from becoming unstable even after the steering wheel is displaced forward due to a secondary collision. Therefore, as shown in the illustrated example, the present invention is not limited to the tilt / telescopic steering device, but can be applied to a steering device having only a tilt mechanism or only a telescopic mechanism, and further to a steering device not having any of these mechanisms. it can.
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Abstract
Description
図1~図10は、本発明の実施の形態の第1例を示している。なお、本例を含めて本発明の特徴は、二次衝突時に基づく前方への衝撃荷重によりステアリングコラム6aを構成するアウタコラム11aを車体に対し、前方への変位可能に、かつ、前方への変位後にも下方への落下を防止できる状態で支持するための構造にある。ステアリング装置に関する、その他の部分の構造および作用に関しては、図18~図20により説明した従来構造と同様であるから、同等部分に関しては同一符号を付して、重複する説明を、省略もしくは簡略にし、以下、本例の特徴部分を中心に説明する。
図11~図12は、本発明の実施の形態の第2例を示している。本例の場合には、脱落側ブラケット46と支持カプセル16aとを結合固定するための結合部材として、スタッド24を使用している。そして、このスタッド24の下端部を、脱落側ブラケット46の下板部54のうちで取付孔55部分に、この取付孔55を下方から上方に挿通した状態で支持固定している。さらに、スタッド24を、支持カプセル16aの通孔43aに下方から上方に挿通した状態で、このスタッド24の上端部でこの支持カプセル16aの上面よりも上方に突出した部分に、ナット57aを螺合して締め付けている。その他の部分の構成および作用は、実施の形態の第1例の場合と同様であるから、同等部分に関する図示並びに説明は省略する。
図13~図14は、本発明の実施の形態の第3例を示している。本例の場合には、脱落側ブラケット46と支持カプセル16aとを結合固定するための結合部材として、結合ピン60を使用している。そして、この結合ピン60の上端部で支持カプセル16aの上面よりも上方に突出した部分に、止め輪61を係止している。スタッド24が結合ピン60に、ナット57aが止め輪61に、それぞれ変わった点以外は、実施の形態の第2例と同様であるから、重複する説明は省略する。
図15~図17は、本発明の実施の形態の第4例を示している。本例の場合には、脱落側ブラケット46と支持カプセル16aとを結合固定するための結合部材として、合成樹脂製の柱状部材63を使用している。この柱状部材63は、脱落側ブラケット46を構成する下板部54に形成した取付孔55と支持カプセル16aの通孔43aの内側に、取付孔55と通孔43aの間に掛け渡す状態で射出成形することにより形成されている。また、この通孔43aの上側部分の断面積を下側部分の断面積よりも広くし、柱状部材63の下端部で下板部54の下面よりも突出した部分に外向フランジ状の第2鍔部64を形成している。そして、この第2鍔部64と、柱状部材63の上端部で通孔43aの上側部分に存在する部分との間で、非脱落側ブラケット45の天板部48を上下両側から挟持している。その他の部分の構成および作用は、実施の形態の第1例の場合と同様であるから、同等部分に関する図示並びに説明は省略する。
実施の形態の第4例では、支持カプセル16aを軽合金製とし、係止ピン53および柱状部材63を合成樹脂製としている。これに対して、支持カプセル16aも合成樹脂製とし、これらの支持カプセル16aと係止ピン53と柱状部材63とを一体に形成することもできる。すなわち、非脱落側ブラケット45の天板部48のうちで長孔50の後端部近傍部分、並びに、脱落側ブラケット46のうちの下板部54を、射出成型用のキャビティ内にセットした状態で、このキャビティ内に合成樹脂を送り込んで、支持カプセル16aを、係止ピン53および柱状部材63とともに射出成形(インサート成形)する。完成後の形状は、支持カプセル16aと係止ピン53および柱状部材63とが一体となるだけで、図15~図17と同様である。
2 ステアリングギヤユニット
3 入力軸
4 タイロッド
5、5a ステアリングシャフト
6、6a ステアリングコラム
7 自在継手
8 中間シャフト
9 自在継手
10 電動モータ
11、11a アウタコラム
12、12a インナコラム
13、13a アウタシャフト
14、14a インナシャフト
15 車体
16、16a 支持カプセル
17 ボルト
18 支持ブラケット
19 チルトロッド
20 天板
21、21′、21a 側板
22 取付板部
23 切り欠き
24 スタッド
25 係止溝
26a、26b 小通孔
27 連結腕部
28 係止板部
29 係止孔
30 減速機ケース
31 支持腕部
32 横軸
33 被挟持部
34 スリット部
35 テレスコピック用長孔
36a、36b チルト用長孔
37 鍔部
38 ナット
39 スラスト軸受
40 調節レバー
41 カム機構
42a、42b カム板素子
43、43a 通孔
44 バランススプリング
45 非脱落側ブラケット
46 脱落側ブラケット
47 ボルト
48、48′ 天板部
49 連結板部
50 長孔
51 透孔
52a、52b 係止孔
53 係止ピン
54 下板部
55 取付孔
56 連結部
57、57a ナット
58 ガイド部
59 鍔部
60 結合ピン
61 止め輪
62 凹入部
63 柱状部材
64 第二鍔部
Claims (8)
- ステアリングコラムの軸方向中間部の上方で車体に対し支持固定される非脱落側ブラケットであって、このステアリングコラムの軸方向に設けられた天板部と、この天板部の一部に、互いに平行に、かつ、このステアリングコラムの軸方向に伸長するように形成された1対の長孔とを備えた、非脱落側ブラケットと、
前記ステアリングコラムの軸方向中間部に支持された脱落側ブラケットであって、前記非脱落側ブラケットの前記天板部の下面にその上面を対向させた下板部と、この下板部の一部で前記長孔の後端部にそれぞれ整合する位置に形成された1対の取付孔とを備えた、脱落側ブラケットと、
前記非脱落側ブラケットの前記長孔のそれぞれの後端部において、前記非脱落側ブラケットに固定され、それぞれ上下方向に貫通する通孔を備えた1対の支持カプセルであって、これらの支持カプセルに対して加わる前方に向いた衝撃荷重に基づいて、前記長孔に沿って前方への変位を可能に、かつ、これらの長孔から前記非脱落側ブラケットの前記天板部の厚さ方向に抜け出さないように設置された、1対の支持カプセルと、および、
前記脱落側ブラケットの前記取付孔および前記支持カプセルの通孔に挿通され、前記脱落側ブラケットを前記支持カプセルに対して結合している、1対の結合部材と、
を備える、ステアリングコラムの支持装置。 - 前記支持カプセルが、前記長孔の幅寸法よりわずかに小さい幅寸法を有するガイド部と、このガイド部の上側部分に設けられ、前記長孔の幅寸法よりも大きな幅寸法を有する鍔部とをそれぞれ備え、このガイド部を前記長孔内に位置させ、かつ、この鍔部と前記下板部とを、前記天板部の厚さ方向に関し、この天板部のうちで前記長孔の両側部分に位置させることにより、前記支持カプセルを、前記長孔に沿った変位を可能に、かつ、前記長孔から前記天板部の厚さ方向に抜け出さないように設置している、請求項1に記載したステアリングコラムの支持装置。
- 前記結合部材は、前記通孔および前記取付孔を上方から下方に挿通したボルトと、前記下板部の下面に設置され、これらのボルトに螺合されているナットとからなる、請求項2に記載したステアリングコラムの支持装置。
- 前記結合部材は、前記取付孔および前記通孔を下方から上方に挿通し、下端部が前記下板部の下面に支持され、上端部が前記支持カプセルの上面よりも上方に突出している、スタッドと、これらのスタッドの前記上端部に螺合されているナットとからなる、請求項2に記載したステアリングコラムの支持装置。
- 前記結合部材は、前記取付孔および前記通孔を下方から上方に挿通し、下端部が前記下板部の下面に支持され、上端部が前記支持カプセルの上面よりも上方に突出している、結合ピンと、この結合ピンの前記上端部に係止された止め輪とからなる、請求項2に記載したステアリングコラムの支持装置。
- 前記支持カプセルの前記通孔は、上側部分の断面積が下側部分の断面積よりも広くなるように構成されており、
前記結合部材は、合成樹脂を、前記取付孔と前記通孔とに、これらの取付孔と通孔の間に掛け渡す状態で、射出成形することにより形成された柱状部材であり、
前記柱状部材の下端部で前記下板部の下面よりも下方に突出した部分に外向フランジ状の第2鍔部を形成しており、この第2鍔部と、前記柱状部材の上端部で前記通孔の上側部分に存在する部分との間で、前記天板部を上下両側から挟持している、請求項2に記載したステアリングコラムの支持装置。 - 前記支持カプセルと前記非脱落側ブラケットの前記天板部との互いに整合する位置に形成した係止孔同士の間に掛け渡す状態で設置され、剪断方向の衝撃荷重により裂断可能な係止ピンを備える、請求項1に記載したステアリングコラムの支持装置。
- 前記支持カプセルが合成樹脂製であって、これらの支持カプセルが、射出成形により、前記係止ピンと一体に形成されている、請求項7に記載したステアリングコラムの支持装置。
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JP2011533899A JP5429295B2 (ja) | 2010-06-16 | 2011-06-13 | ステアリングコラムの支持装置 |
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US9346482B2 (en) | 2013-01-30 | 2016-05-24 | Jtekt Corporation | Steering-column device |
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JP2014166841A (ja) * | 2013-01-30 | 2014-09-11 | Jtekt Corp | ステアリング装置 |
US9381936B2 (en) | 2013-01-30 | 2016-07-05 | Jtekt Corporation | Steering-column device |
US9359002B2 (en) | 2013-01-30 | 2016-06-07 | Jtekt Corporation | Steering-column device |
WO2014119608A1 (ja) * | 2013-01-30 | 2014-08-07 | 株式会社ジェイテクト | ステアリングコラム装置 |
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CN105473413A (zh) * | 2013-06-11 | 2016-04-06 | 株式会社捷太格特 | 转向装置 |
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US9656684B2 (en) | 2013-06-28 | 2017-05-23 | Jtekt Corporation | Steering device |
JP2016002771A (ja) * | 2014-06-13 | 2016-01-12 | 日本精工株式会社 | チルト式ステアリング装置 |
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JP2016016846A (ja) * | 2014-07-11 | 2016-02-01 | 日本精工株式会社 | チルト式ステアリング装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2565103A1 (en) | 2013-03-06 |
EP2565103B1 (en) | 2015-04-01 |
JPWO2011158787A1 (ja) | 2013-08-19 |
US8562020B2 (en) | 2013-10-22 |
CN102481945A (zh) | 2012-05-30 |
EP2565103A4 (en) | 2013-10-16 |
US20120112443A1 (en) | 2012-05-10 |
JP5429295B2 (ja) | 2014-02-26 |
CN102481945B (zh) | 2014-07-02 |
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