WO2022153438A1 - 回転機 - Google Patents
回転機 Download PDFInfo
- Publication number
- WO2022153438A1 WO2022153438A1 PCT/JP2021/001049 JP2021001049W WO2022153438A1 WO 2022153438 A1 WO2022153438 A1 WO 2022153438A1 JP 2021001049 W JP2021001049 W JP 2021001049W WO 2022153438 A1 WO2022153438 A1 WO 2022153438A1
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- WIPO (PCT)
- Prior art keywords
- cylindrical portion
- brake
- rotor
- gap
- slide plate
- Prior art date
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- 238000013459 approach Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 210000000078 claw Anatomy 0.000 claims description 6
- 230000004907 flux Effects 0.000 description 55
- 230000005284 excitation Effects 0.000 description 6
- 229910000976 Electrical steel Inorganic materials 0.000 description 5
- 239000000696 magnetic material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000002783 friction material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
- H02K7/1021—Magnetically influenced friction brakes
- H02K7/1023—Magnetically influenced friction brakes using electromagnets
- H02K7/1025—Magnetically influenced friction brakes using electromagnets using axial electromagnets with generally annular air gap
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/2713—Inner rotors the magnetisation axis of the magnets being axial, e.g. claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2746—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets arranged with the same polarity, e.g. consequent pole type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
- H02K21/046—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with rotating permanent magnets and stationary field winding
- H02K21/048—Rotor of the claw pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
Definitions
- This disclosure relates to a rotating machine including a motor unit and a brake unit.
- a rotating machine having a motor part and a brake part is known.
- the motor unit and the brake unit are generally arranged along the axial direction of the rotation axis of the motor unit.
- a non-excitation operation type rotary machine when the brake coil of the brake portion is energized, the braking of the motor portion is released and the motor portion can rotate.
- Patent Document 1 discloses a non-excitation operation type rotary machine in which a brake portion is arranged at one end portion along an axial direction of a rotation shaft of a motor portion.
- the brake portion disclosed in Patent Document 1 includes a side plate provided so as to be immovable and non-rotatable along the axial direction of the rotation shaft of the motor portion, and a shaft that can move along the axial direction of the rotation shaft of the motor portion. It has a brake disc provided on the outer peripheral surface of the motor unit and rotating integrally with the shaft, and an armature slidably provided in a direction of approaching and separating from the brake disc along the axial direction of the rotation shaft of the motor unit. The armature, the brake disc, and the side plate are arranged in this order along the axial direction of the rotation axis of the motor portion in a direction away from the motor portion.
- the brake portion disclosed in Patent Document 1 includes a cylindrical yoke arranged between the motor portion and the armature through which the shaft is passed.
- the yoke is formed with an annular recess that opens toward the armature and a spring recess that opens toward the armature.
- a brake coil is arranged in the annular recess, and a spring member for urging the armature toward the brake disc is arranged in the spring recess.
- the magnetic flux generated from the brake coil when the brake coil is energized is the yoke and the armature. It is difficult to flow out of the brake part through.
- the thickness of the portion of the yoke located between the brake coil and the rotor is the same as the thickness of the cylindrical portion formed in the portion of the yoke facing the shaft. Therefore, the magnetic flux generated from the brake coil does not easily flow to the rotor. Therefore, the magnetic flux generated from the brake coil cannot be used for the torque of the motor unit.
- the present disclosure has been made in view of the above, and an object of the present disclosure is to obtain a rotating machine capable of utilizing the magnetic flux generated from the brake coil for the torque of the motor unit.
- the rotary machine penetrates a cylindrical stator, a rotor provided on the inner peripheral side of the stator with a gap from the stator, and a rotor.
- a motor unit having a shaft provided as described above and a brake unit for braking the motor unit are provided.
- the brake portion is provided so as to be slidable in a direction in which a rotating plate fixed to the outer peripheral surface of the shaft and rotating with the rotation of the shaft and a rotating plate approaching and separating from the rotating plate along the axial direction of the rotating shaft of the motor portion are provided.
- the slide plate, the spring member that urges the slide plate toward the rotating plate by the spring force, and the spring member are arranged on the opposite side of the slide plate in the axial direction, and slide against the spring force of the spring member.
- It has an electromagnet that can attract the plate in a direction that separates it from the rotating plate.
- the electromagnet includes a yoke including a cylindrical inner cylindrical portion through which a shaft is passed, an inner cylindrical portion on the outer peripheral side of the inner cylindrical portion, and a cylindrical outer cylindrical portion provided via a space, and an inner cylindrical portion. It has a brake coil arranged in a space formed between the outer cylindrical portion and the outer cylindrical portion.
- the yoke is arranged between the slide plate and the rotor in the axial direction with a gap between the slide plate and the rotor.
- the brake coil is arranged adjacent to the rotor in the axial direction. When the brake coil is energized, the slide plate is characterized by approaching both the inner and outer cylinders.
- the rotating machine according to the present disclosure has the effect that the magnetic flux generated from the brake coil can be used for the torque of the motor unit.
- Sectional drawing which shows the time of brake operation of the rotary machine which concerns on Embodiment 1.
- Sectional drawing which shows the time when the brake of the rotary machine which concerns on Embodiment 1 is released.
- Partial cross-sectional view showing when the brake of the rotary machine according to the first embodiment is released.
- Sectional drawing which shows the time of brake operation of the rotary machine which concerns on Embodiment 2.
- Enlarged sectional view showing the time when the brake of the rotating machine according to the third embodiment is released.
- Enlarged sectional view showing the time when the brake of the rotary machine according to the fourth embodiment is released.
- Enlarged sectional view showing the time when the brake of the rotary machine according to the fifth embodiment is released.
- FIG. 5 is a cross-sectional view showing a time when the brake of the rotary machine according to the fifteenth embodiment is operated.
- FIG. 1 is a cross-sectional view showing a time when the brake of the rotary machine 1 according to the first embodiment is operated.
- the rotating machine 1 includes a motor unit 2 and a brake unit 3.
- the motor unit 2 has a stator 21, a rotor 22, and a shaft 23.
- the stator 21 is formed in a cylindrical shape having a central axis C.
- the central axis C of the stator 21, the rotor 22, and the shaft 23 are coaxially provided.
- the rotor 22 and the shaft 23 can rotate around the central axis C as a rotation axis.
- the axial direction of the rotating shafts of the rotor 22 and the shaft 23 is "axial direction”
- the direction orthogonal to the axial direction of the rotating shafts of the rotor 22 and the shaft 23 is "axial direction”.
- the radial direction and the rotational direction of the rotating shafts of the rotor 22 and the shaft 23 are referred to as "circumferential directions”.
- the stator 21 includes a cylindrical stator core 24 and a motor coil 25 wound around the stator core 24.
- the stator core 24 is arranged near the outer cylindrical portion 82 described later.
- Coil end portions 26 of the motor coil 25 are arranged at both ends of the stator core 24 in the axial direction.
- the coil end portion 26 is arranged at a position where it overlaps with the brake coil 9 described later in the radial direction.
- the rotor 22 is provided on the inner peripheral side of the stator 21 with a gap from the stator 21.
- the rotor 22 includes a plurality of rotor cores 27 and a permanent magnet 28.
- the rotor core 27 is formed in a cylindrical shape.
- the number of rotor cores 27 is two in this embodiment.
- the two rotor cores 27 are arranged at intervals in the axial direction.
- Permanent magnets 28 are arranged between adjacent rotor cores 27.
- the shaft 23 is provided so as to penetrate the center of the rotor 22 in the axial direction.
- the shaft 23 is passed through the inner peripheral side of each of the plurality of rotor cores 27.
- the shaft 23 is formed in a cylindrical shape. Both ends of the shaft 23 in the axial direction project from the rotor core 27.
- a load (not shown) is attached to one end of the shaft 23 in the axial direction.
- the brake unit 3 has a function of braking the motor unit 2.
- the motor unit 2 and the brake unit 3 are arranged along the axial direction.
- the brake portion 3 is arranged on the side opposite to the load, that is, on the opposite side of the load, with the motor portion 2 interposed therebetween.
- the brake unit 3 has a rotating plate 4, a slide plate 5, a spring member 6, and an electromagnet 7.
- the brake unit 3 may be arranged on the load side.
- the rotating plate 4 is a disk-shaped member that is fixed to the outer peripheral surface of the shaft 23 and rotates with the rotation of the shaft 23.
- a mounting hole 41 for mounting the shaft 23 is formed in the center of the rotating plate 4.
- the slide plate 5 is a member provided so as to be slidable in the direction of approaching and separating from the rotating plate 4 along the axial direction.
- the slide plate 5 is composed of a brake plate 51 and an armature 52.
- the brake plate 51 and the armature 52 are arranged side by side in the axial direction from the rotating plate 4 toward the motor unit 2 in this order.
- the brake plate 51 is a disk-shaped part.
- a through hole 51a through which the shaft 23 is passed is formed in the center of the brake plate 51.
- a friction material (not shown) is provided on the surface of the brake plate 51 facing the rotating plate 4.
- the armature 52 is a disk-shaped part. At the center of the armature 52, a through hole 52a through which the shaft 23 is passed is formed.
- a soft magnetic material is used as the material of the armature 52.
- the soft magnetic material is, for example, a steel plate.
- the spring member 6 is a member that urges the slide plate 5 toward the rotating plate 4 by a spring force.
- a coil spring is used for the spring member 6, for example.
- the brake When the brake is activated, the slide plate 5 is pressed against the rotating plate 4 by the spring force of the spring member 6, and the friction material of the brake plate 51 and the rotating plate 4 come into contact with each other, thereby braking the motor unit 2.
- the brake When the brake is activated, the slide plate 5 is pressed against the rotating plate 4 by the spring member 6, so that the gap between the slide plate 5 and the yoke 8 becomes large, and the amount of magnetic flux generated from the permanent magnet 28 flows to the yoke 8 is small. ..
- the electromagnet 7 is arranged on the side opposite to the slide plate 5 with the spring member 6 sandwiched in the axial direction, and is a member capable of attracting the slide plate 5 in a direction away from the rotating plate 4 against the spring force of the spring member 6. Is.
- the electromagnet 7 has a yoke 8 and a brake coil 9.
- the yoke 8 includes a cylindrical inner cylindrical portion 81 through which the shaft 23 is passed, and a cylindrical outer cylindrical portion 82 provided on the outer peripheral side of the inner cylindrical portion 81 via the inner cylindrical portion 81 and the space 83. ..
- the inner cylindrical portion 81 and the outer cylindrical portion 82 are formed concentrically.
- Space 83 is an annular space.
- the yoke 8 is arranged between the slide plate 5 and the rotor core 27 in the axial direction with a gap from the slide plate 5 and the rotor core 27.
- the slide plate 5 is arranged on one side in the axial direction sandwiching the inner cylindrical portion 81, and the rotor core 27 is arranged on the other side in the axial direction sandwiching the inner cylindrical portion 81.
- the rotor core 27 is arranged near the inner cylindrical portion 81.
- FIG. 2 is a cross-sectional view showing a time when the brake of the rotary machine 1 according to the first embodiment is released. As shown in FIG. 2, when the brake coil 9 is energized, the slide plate 5 is attracted in a direction away from the rotating plate 4 against the spring force of the spring member 6, and the slide plate 5 and the rotating plate 4 are attracted to each other.
- the brake coil 9 When the brake coil 9 is energized, the slide plate 5 is adjacent to both the inner cylindrical portion 81 and the outer cylindrical portion 82. That is, when the brake coil 9 is energized, the slide plate 5 approaches both the inner cylindrical portion 81 and the outer cylindrical portion 82. With the brake coil 9 energized, the axial distance L1 from the rotor core 27 and the stator core 24 to the armature 52 is larger than the radial distance L2 from the rotor core 27 to the stator core 24.
- the magnetic flux generated from the brake coil 9 when the brake coil 9 is energized is referred to as a brake magnetic flux.
- the flow of the brake magnetic flux is indicated by a white arrow.
- the brake magnetic flux generated by energizing the brake coil 9 flows through the inner cylindrical portion 81 and then flows to the rotor core 27 arranged with a slight gap from the inner cylindrical portion 81. .. Next, after flowing from the rotor core 27 to the stator core 24, it flows to the outer cylindrical portion 82. Finally, after flowing from the outer cylindrical portion 82 to the armature 52, it returns to the inner cylindrical portion 81. In this way, the brake magnetic flux flows around the inner cylindrical portion 81, the rotor core 27, the stator core 24, the outer cylindrical portion 82, the armature 52, and the inner cylindrical portion 81 in this order.
- the slide plate 5 When the brake is released, the slide plate 5 is attracted to the yoke 8 by energizing the brake coil 9, and the gap between the slide plate 5 and the yoke 8 becomes smaller. Therefore, the brake magnetic flux generated from the brake coil 9 is generated by the slide plate 5. It becomes easier to flow to the rotor core 27 side than to the side.
- FIG. 3 is a partial cross-sectional view showing the time when the brake of the rotating machine 1 according to the first embodiment is released.
- hatching is omitted for ease of understanding.
- the paths in which the brake magnetic flux contributes to the improvement of the torque of the motor portion 2 are the inner cylindrical portion 81, the rotor core 27, the stator core 24, the outer cylindrical portion 82, the armature 52, and the inner cylindrical portion 81. It is a route that flows in the order of.
- the paths in which the brake magnetic flux does not contribute to the improvement of the torque of the motor portion 2 are the inner cylindrical portion 81, the rotor core 27, the brake coil 9, the outer cylindrical portion 82, the armature 52, and the inner side. It is a path that flows in the order of the cylindrical portion 81.
- the distance L1 along the axial direction from the rotor core 27 and the stator core 24 to the armature 52 is the radial direction from the rotor core 27 to the stator core 24. It is larger than the distance L2 along.
- the brake coil 9 since the brake coil 9 is arranged adjacent to the rotor core 27 in the axial direction, the magnetic resistance of the path through which the brake magnetic flux passes between the rotor core 27 and the stator core 24 is the brake magnetic flux. It is smaller than the reluctance of the path passing between the rotor core 27 and the brake coil 9. Therefore, most of the brake magnetic flux generated from the brake coil 9 and passing through the inner cylindrical portion 81 flows from the rotor core 27 to the outer cylindrical portion 82 through the stator core 24, and the leakage flux from the rotor core 27 to the brake coil 9. Is reduced. That is, the brake magnetic flux generated from the brake coil 9 can be used for the torque of the motor unit 2.
- a part of the energizing power of the brake coil 9 can be used as the driving power of the motor unit 2. Therefore, when the rotating machine 1 according to the present embodiment has the same size as the conventional rotating machine with the brake part. Can improve the efficiency of the motor system. Further, if the rotating machine 1 according to the present embodiment has the same power consumption as the conventional rotating machine with a brake unit, the torque of the motor unit 2 can be improved. Further, if the rotating machine 1 according to the present embodiment has the same torque as the conventional rotating machine with a brake portion, the motor portion 2 can be downsized.
- FIG. 4 is a cross-sectional view showing a time when the brake of the rotating machine 1A according to the second embodiment is operated.
- the present embodiment is different from the above-described first embodiment in that the brake portion 3 includes the fixing plate 10.
- the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.
- the fixing plate 10 is a disk-shaped member that is immovably and non-rotatably fixed to the outer cylindrical portion 82 of the yoke 8 by bolts B.
- a through hole 10a through which the shaft 23 is passed is formed in the center of the fixing plate 10.
- the rotating plate 4 is connected to the shaft 23 via a hub 11 fixed to the shaft 23.
- the rotating plate 4 is fitted to the hub 11 so as to be rotatable and axially slidable as the shaft 23 rotates. Friction materials are provided on both sides of the rotating plate 4 in the axial direction.
- the slide plate 5 is composed of only the armature 52 in the present embodiment.
- the fixing plate 10, the rotating plate 4, and the slide plate 5 are arranged side by side in the axial direction toward the motor unit 2 in this order.
- the rotating plate 4 is arranged between the fixing plate 10 and the slide plate 5.
- the slide plate 5 moves in the axial direction toward the rotary plate 4 due to the spring force of the spring member 6, so that the rotary plate 4 is sandwiched between the slide plate 5 and the fixing plate 10.
- the motor unit 2 is braked when the friction materials provided on both sides of the rotating plate 4 in the axial direction come into contact with both the slide plate 5 and the fixing plate 10.
- both sides of the rotary plate 4 in the axial direction can be used for braking the motor unit 2, the rotary plate 4 and the slide plate 5 can be miniaturized.
- FIG. 5 is an enlarged cross-sectional view showing a time when the brake of the rotary machine 1B according to the third embodiment is released.
- the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.
- the outer cylindrical portion 82 has an outer cylindrical portion main body 82a having a constant diameter in the axial direction and an end portion of the outer cylindrical portion main body 82a facing the axial slide plate 5 in the radial direction toward the inner cylindrical portion 81. It has a flange portion 82b extending to.
- the distance along the radial direction from the outer peripheral surface of the inner cylindrical portion 81 to the inner peripheral surface of the flange portion 82b which is the shortest radial distance between the inner cylindrical portion 81 and the outer cylindrical portion 82, is defined as the first distance D1.
- the distance along the radial direction from the outer peripheral surface of the inner cylindrical portion 81 to the inner peripheral surface of the outer cylindrical portion main body 82a, which is the longest distance between the inner cylindrical portion 81 and the outer cylindrical portion 82 in the radial direction, is defined as the second distance D2. ..
- the distance along the radial direction from the inner peripheral surface of the stator core 24 to the outer peripheral surface of the rotor core 27 is defined as the third distance D3.
- the first distance D1 and the second distance D2 are longer than the third distance D3.
- the brake magnetic flux flowing directly from the inner cylindrical portion 81 to the outer cylindrical portion 82 without passing through the stator core 24 is applied. It becomes possible to suppress it, and it is possible to reduce the leakage flux that does not contribute to the torque of the motor unit 2.
- FIG. 6 is an enlarged cross-sectional view showing a time when the brake of the rotary machine 1C according to the fourth embodiment is released.
- the present embodiment is different from the first embodiment in that the inner cylindrical portion 81 and the outer cylindrical portion 82 are integrated by the thin-walled portion 84.
- the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.
- the yoke 8 includes a thin-walled portion 84 that connects the inner cylindrical portion 81 and the outer cylindrical portion 82.
- the thin-walled portion 84 connects the ends of the inner cylindrical portion 81 and the outer cylindrical portion 82 facing the motor portion 2 in the axial direction.
- the thin-walled portion 84 is arranged between the inner cylindrical portion 81 and the outer cylindrical portion 82 and the motor portion 2.
- the thin-walled portion 84 is arranged next to the motor portion 2 in the axial direction.
- the thickness of the inner cylindrical portion 81 is defined as the first thickness T1
- the thickness of the outer cylindrical portion 82 is defined as the second thickness T2
- the thickness of the thin-walled portion 84 is defined as the third thickness T3.
- the third thickness T3 is thinner than the first thickness T1 and the second thickness T2.
- the yoke 8 includes a thin-walled portion 84 that connects the inner cylindrical portion 81 and the outer cylindrical portion 82, so that the inner cylindrical portion 81 and the outer cylindrical portion 82 are interposed via the thin-walled portion 84. Since it is integrated, the number of parts can be reduced, the cost can be reduced, and the assembling property can be improved.
- the third thickness T3 of the thin wall portion 84 is thinner than the first thickness T1 of the inner cylindrical portion 81 and the second thickness T2 of the outer cylindrical portion 82, so that the brake magnetic flux is reduced. Since the thin-walled portion 84 causes magnetic saturation and flows through the thin-walled portion 84 to the rotor core 27 and the stator core 24, it is possible to suppress the leakage flux that does not contribute to the torque of the motor portion 2.
- FIG. 7 is an enlarged cross-sectional view showing a time when the brake of the rotary machine 1D according to the fifth embodiment is released.
- the position of the thin-walled portion 84 is different from that of the fourth embodiment.
- the same reference numerals are given to the parts that overlap with the fourth embodiment, and the description thereof will be omitted.
- the thin-walled portion 84 connects the ends of the inner cylindrical portion 81 and the outer cylindrical portion 82 facing the slide plate 5 in the axial direction.
- the thin-walled portion 84 extends radially between the inner cylindrical portion 81 and the flange portion 82b.
- the thin portion 84 is arranged between the brake coil 9 and the slide plate 5 in the axial direction.
- the thin portion 84 is arranged next to the armature 52 of the slide plate 5 in the axial direction.
- the third thickness T3 is thinner than the first thickness T1 and the second thickness T2.
- the thin-walled portion 84 connecting the inner cylindrical portion 81 and the outer cylindrical portion 82 is arranged next to the armature 52, so that the thin-walled portion 84 is arranged next to the motor portion 2 as compared with the case where the thin-walled portion 84 is arranged next to the motor portion 2.
- the brake magnetic flux easily flows from the inner cylindrical portion 81 to the rotor core 27 and the stator core 24. Therefore, it is possible to suppress the leakage flux that does not contribute to the torque of the motor unit 2.
- FIG. 8 is an enlarged cross-sectional view showing a time when the brake of the rotary machine 1E according to the sixth embodiment is released.
- hatching is omitted for ease of understanding.
- the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.
- the outer diameter R1 of the brake coil 9 and the outer diameter R2 of the rotor core 27 have the same diameter.
- the outer diameter R3 of the outer cylindrical portion 82 and the outer diameter R4 of the stator core 24 have the same diameter.
- the same diameter means not only the case where the outer diameter is completely the same, but also the case where the outer diameter is slightly different due to manufacturing error, assembly error, and the like.
- the rotor core 27 is connected to the inner cylindrical portion 81 while suppressing an increase in the outer diameter of the brake coil 9. Brake magnetic flux can be effectively applied to the diameter. Further, in the present embodiment, since the outer diameter R3 of the outer cylindrical portion 82 and the outer diameter R4 of the stator core 24 are the same diameter, the outer diameter of the motor portion 2 is suppressed from being increased, and the outer diameter is outside the stator core 24. The brake magnetic flux can be effectively flowed to the cylindrical portion 82.
- FIG. 9 is an enlarged cross-sectional view showing the time when the brake of the rotary machine 1F according to the seventh embodiment is released.
- the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.
- the axial gap formed between the inner cylindrical portion 81 and the rotor core 27 is the first gap G1
- the radial gap formed between the rotor core 27 and the stator core 24 is the second gap.
- the gap G2 Further, a gap along the axial direction formed between the outer cylindrical portion 82 and the slide plate 5 is provided as a third gap G3, and a gap formed between the inner cylindrical portion 81 and the slide plate 5 along the axial direction is provided.
- the fourth gap G4 With the brake coil 9 energized, the inner cylindrical portion 81, the rotor core 27, so as to satisfy the relationship of the second gap G2> the first gap G1> the third gap G3 and the fourth gap G4 ⁇ 0 mm.
- the stator core 24, the outer cylindrical portion 82, and the slide plate 5 are arranged.
- the slide plate 5 moves so as to be axially separated from the inner cylindrical portion 81 and the outer cylindrical portion 82, so that the third gap G3 and the fourth gap G4 are larger when the brake is released than when the brake is activated. Is smaller.
- the magnitude relationship between the third gap G3 and the fourth gap G4 is not particularly limited. In FIG. 9, the gaps G1, G2, G3, and G4 are drawn extremely large in order to facilitate understanding.
- the brake magnetic flux is satisfied by satisfying the relationship of the second gap G2> the first gap G1> the third gap G3 and the fourth gap G4 ⁇ 0 mm while the brake coil 9 is energized. Can reduce the leakage flux when the brake flux flows from the outer cylindrical portion 82 to the slide plate 5, and can reduce the leakage flux when the brake magnetic flux flows from the slide plate 5 to the inner cylindrical portion 81. Therefore, the brake magnetic flux can be further utilized by the torque of the motor unit 2. Further, in the present embodiment, since the second gap G2 is larger than the first gap G1, it is possible to suppress an increase in the cogging torque.
- FIG. 10 is a cross-sectional perspective view showing the rotor 22 of the rotary machine 1G according to the eighth embodiment.
- the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.
- the rotor 22 is a claw pole type rotor.
- the rotor 22 has a rotor core 27 and a permanent magnet 28.
- the rotor core 27 is formed by laminating a plurality of electromagnetic steel sheets in the axial direction.
- two electrical steel sheets are illustrated, but the purpose is not to limit the number of electrical steel sheets.
- one electrical steel sheet is referred to as a first rotor core 27a
- the other electrical steel sheet is referred to as a second rotor core 27b.
- An axially magnetized permanent magnet 28 is arranged between the adjacent first rotor core 27a and the second rotor core 27b.
- a plurality of protrusions 27c are provided on the outer peripheral surface of the first rotor core 27a at equal angles in the circumferential direction.
- a plurality of protrusions 27d are provided on the outer peripheral surface of the second rotor core 27b at equal angles in the circumferential direction.
- the protrusion 27c and the protrusion 27d are arranged so as to be offset in the circumferential direction. That is, when the rotor core 27 is viewed along the axial direction, the protrusions 27c and the protrusions 27d are alternately arranged in the circumferential direction.
- the protrusions 27c of the first rotor core 27a and the protrusions 27d of the second rotor core 27b are alternately arranged in the circumferential direction. Therefore, although not shown here, the brake magnetic flux is omitted. Can be smoothly flowed in the order of the inner cylindrical portion 81, the first rotor core 27a, the stator core 24, and the outer cylindrical portion 82, so that the torque of the motor portion 2 can be improved.
- a soft magnetic integrated part may be used for the rotor core 27. In this way, it becomes easy to manufacture the rotor core 27 into a triangle in which only the surface of the rotor core 27 facing the stator core 24 is extended in the radial direction. Further, the permanent magnet 28 may be omitted, or a DC excitation coil may be arranged instead of the permanent magnet 28. By not using the permanent magnet 28 for the rotor 22, the motor unit 2 can be manufactured at a lower cost, and the strength of the rotor 22 can be improved to increase the rotation speed of the rotor 22.
- FIG. 11 is a diagram showing a rotor 22 of the rotating machine 1H according to the ninth embodiment.
- the same reference numerals are given to the parts that overlap with the eighth embodiment, and the description thereof will be omitted.
- the rotor 22 is a sequential pole type rotor.
- the rotor 22 has a rotor core 27 and a permanent magnet 28.
- the brake magnetic flux can be smoothly flowed in the order of the inner cylindrical portion 81, the rotor core 27, the stator core 24, and the outer cylindrical portion 82, so that the torque of the motor portion 2 is improved. be able to.
- FIG. 12 is a perspective view showing a rotor 22 of the rotating machine 1I according to the tenth embodiment.
- the same reference numerals are given to the parts that overlap with the eighth embodiment, and the description thereof will be omitted.
- the rotor 22 is a mixed type rotor of a claw pole type and a sequential pole type.
- the rotor 22 has a rotor core 27 and a permanent magnet 28.
- On the outer peripheral surface of the first rotor core 27a protrusions 27d and permanent magnets 28a magnetized in one direction are alternately arranged in the circumferential direction.
- On the outer peripheral surface of the second rotor core 27b protrusions 27e and permanent magnets 28b magnetized in one direction are alternately arranged in the circumferential direction.
- the protrusion 27d of the first rotor core 27a and the permanent magnet 28b of the second rotor core 27b overlap in the axial direction, and the permanent magnet 28a of the first rotor core 27a and the protrusion 27e of the second rotor core 27b
- the first rotor core 27a and the second rotor core 27b are arranged so that they overlap in the axial direction.
- the magnetizing direction of the permanent magnet 28a and the magnetizing direction of the permanent magnet 28b are opposite to each other.
- the protrusion 27d of the first rotor core 27a and the permanent magnet 28b of the second rotor core 27b overlap in the axial direction
- the first rotor core 27a and the second rotor core 27b are arranged so that the protrusion 27e of the 27b overlaps in the axial direction.
- FIG. 13 is a control block diagram of the rotating machine 1J according to the eleventh embodiment.
- the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.
- the rotary machine 1J includes a motor unit drive power supply 12, a brake power supply 13, a control unit 14, a motor coil 25, and a brake coil 9.
- the motor unit drive power supply 12 is an external power supply that supplies electric power to the motor coil 25.
- the brake power source 13 is an external power source that supplies electric power to the brake coil 9.
- the control unit 14 is electrically connected to the motor unit drive power supply 12, the brake power supply 13, the motor coil 25, and the brake coil 9.
- the control circuit of the motor coil 25 and the control circuit of the brake coil 9 are integrated in the control unit 14.
- the rotating machine 1J includes a control unit 14 in which the control circuit of the motor coil 25 and the control circuit of the brake coil 9 are integrated, so that the control circuit for driving and the control circuit for braking are provided. Can be shared. Therefore, it is possible to improve the efficiency of the rotating machine 1J by distributing the optimum current to the motor coil 25 and the brake coil 9 while reducing the size of the rotating machine 1J. For example, when the rotation speed of the motor unit 2 is slow, the brake coil 9 is energized in the direction of increasing the magnetic flux of the rotor 22, and when the rotation speed of the motor unit 2 is high, the terminal voltage of the motor unit 2 is reduced. By energizing the brake coil 9 in the direction of weakening the magnetic flux of the rotor 22, the efficiency of the rotating machine 1J can be improved.
- FIG. 14 is a cross-sectional view showing a time when the brake of the rotary machine 1K according to the twelfth embodiment is released.
- the same reference numerals are given to the parts overlapping with the first embodiment, and the description thereof will be omitted.
- the rotary machine 1K includes an exciting coil 15 arranged on the side opposite to the brake coil 9 with the motor portion 2 sandwiched in the axial direction, and a cylindrical exciting yoke 16 accommodating the exciting coil 15.
- the energizing direction of the brake coil 9 is opposite to the energizing direction of the brake coil 9 in the first embodiment.
- the energizing direction of the brake coil 9 and the energizing direction of the exciting coil 15 are the same.
- the magnetic flux generated when the exciting coil 15 is energized is referred to as an exciting magnetic flux.
- the brake magnetic flux flows in the order of the inner cylindrical portion 81, the armature 52, the outer cylindrical portion 82, the stator core 24, and the rotor core 27, and then returns to the inner cylindrical portion 81.
- the exciting magnetic flux flows in the order of the exciting yoke 16, the rotor core 27, the stator core 24, and the exciting yoke 16.
- the rotary machine 1K includes an exciting coil 15 arranged on the opposite side of the brake coil 9 with the motor unit 2 sandwiched in the axial direction, so that the exciting magnetic flux generated from the exciting coil 15 is generated by the motor unit. It can be used for 2 torques. As a result, the magnetic flux can flow to both sides of the motor unit 2 in the axial direction in a well-balanced manner, as compared with the case where only the brake magnetic flux generated from the brake coil 9 is used. Therefore, the electromagnetic force in the axial direction of the motor unit 2 can be reduced.
- the rotor 22 is a claw pole type rotor, and the energization direction of the brake coil 9 and the energization direction of the excitation coil 15 are the same, so that the leakage flux does not interlink the motor coil 25. Can be reduced.
- the rotor 22 according to the eighth embodiment is taken as an example, but the same effect can be obtained even when the rotor 22 according to the tenth embodiment is used. That is, the electromagnetic force in the axial direction of the motor unit 2 can be reduced. Further, since the rotor 22 is a mixed type of the claw pole type and the sequential pole type and the energizing direction of the brake coil 9 and the energizing direction of the exciting coil 15 are the same, the motor coil 25 does not interlink with the leakage. The magnetic flux can be reduced.
- FIG. 15 is a cross-sectional view showing a time when the brake of the rotary machine 1L according to the thirteenth embodiment is released.
- the same reference numerals are given to the portions overlapping with the twelveth embodiment, and the description thereof will be omitted.
- the energizing direction of the brake coil 9 is the same as the energizing direction of the brake coil 9 in the twelfth embodiment.
- the energizing direction of the brake coil 9 and the energizing direction of the exciting coil 15 are opposite to each other.
- the brake magnetic flux flows in the order of the inner cylindrical portion 81, the armature 52, the outer cylindrical portion 82, the stator core 24, and the rotor core 27, and then returns to the inner cylindrical portion 81.
- the exciting magnetic flux flows in the order of the exciting yoke 16, the stator core 24, the rotor core 27, and the exciting yoke 16.
- the energizing direction of the brake coil 9 and the energizing direction of the exciting coil 15 are reversed from each other as in the present embodiment. Similarly, the electromagnetic force in the axial direction of the motor unit 2 can be reduced. Further, in the present embodiment, the rotor 22 is a concave pole type rotor, and the energizing direction of the brake coil 9 and the energizing direction of the exciting coil 15 are opposite to each other, so that the brake generated from the brake coil 9 is generated. Of the magnetic flux, the component passing through the axial direction of the shaft 23 is canceled, and the shaft 23 is not magnetized. Therefore, when a magnetic material such as iron is attached to the axial end of the shaft 23, there is an advantage that the magnetic material is not attracted to the shaft 23.
- FIG. 16 is a cross-sectional view showing a time when the brake of the rotary machine 1M according to the fourteenth embodiment is released.
- FIG. 16 schematically shows the flow of the magnetic flux generated from the brake coil 9 when the brake is released and the flow of the magnetic flux M due to the rotating magnetic field.
- the same reference numerals are given to the parts overlapping with the 12th embodiment, and the description thereof will be omitted.
- the motor unit 2 has a bearing 17 that rotatably supports the shaft 23.
- the flow direction of a part of the brake magnetic flux generated by energizing the brake coil 9 coincides with the direction of canceling a part of the magnetic flux generated by the rotating magnetic field.
- the potential difference of the bearing 17 can be reduced by energizing the brake coil 9 so that a part of the brake magnetic flux flows in a direction that cancels a part of the magnetic flux due to the rotating magnetic field, and the bearing 17 is damaged. Can be suppressed. Such an effect can be achieved not only by the double-sided brake type rotary machine 1M having the brake coil 9 and the exciting coil 15, but also by the one-sided brake type rotary machine 1 having only the brake coil 9 as in the first embodiment. Can be done.
- FIG. 17 is a cross-sectional view showing a time when the brake of the rotating machine 1N according to the fifteenth embodiment is operated.
- the same reference numerals are given to the parts that overlap with the first embodiment, and the description thereof will be omitted.
- the rotary machine 1N includes a speed reducer 18 attached to the shaft 23, an angle detector 19 provided on the output side of the speed reducer 18 to detect the rotation angle of the motor unit 2, and the voltage of the motor unit 2 or the motor unit 2.
- a control unit 14 that estimates the rotation angle of the motor unit 2 based on the current of the motor unit 2 and a motor unit drive power supply 12 are provided.
- the motor unit drive power supply 12 is an external power supply that supplies electric power to the motor coil 25.
- the control unit 14 is electrically connected to the motor unit drive power supply 12.
- the speed reducer 18 is arranged on the side opposite to the brake portion 3 with the motor portion 2 interposed therebetween in the axial direction.
- the angle detector on the input side of the speed reducer 18 can be reduced, so that the rotary machine 1 can be miniaturized.
- the angle detector 19 on the output side of the speed reducer 18 the influence of the backlash of the speed reducer 18 can be reduced and the position detection accuracy of the angle detector 19 can be improved.
- the configuration shown in the above embodiments is an example, and can be combined with another known technique, can be combined with each other, and does not deviate from the gist. It is also possible to omit or change a part of the configuration.
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Abstract
Description
図1は、実施の形態1にかかる回転機1のブレーキ作動時を示す断面図である。図1に示すように、回転機1は、モータ部2と、ブレーキ部3とを備える。
次に、図4を参照して、実施の形態2にかかる回転機1Aについて説明する。図4は、実施の形態2にかかる回転機1Aのブレーキ作動時を示す断面図である。本実施の形態では、ブレーキ部3が固定板10を備える点が前記した実施の形態1と相違する。なお、実施の形態2では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
次に、図5を参照して、実施の形態3にかかる回転機1Bについて説明する。図5は、実施の形態3にかかる回転機1Bのブレーキ解放時を示す拡大断面図である。なお、実施の形態3では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
次に、図6を参照して、実施の形態4にかかる回転機1Cについて説明する。図6は、実施の形態4にかかる回転機1Cのブレーキ解放時を示す拡大断面図である。本実施の形態では、内側円筒部81と外側円筒部82とを薄肉部84で一体化した点が前記した実施の形態1と相違する。なお、実施の形態4では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
次に、図7を参照して、実施の形態5にかかる回転機1Dについて説明する。図7は、実施の形態5にかかる回転機1Dのブレーキ解放時を示す拡大断面図である。本実施の形態では、薄肉部84の位置が前記した実施の形態4と相違する。なお、実施の形態5では、前記した実施の形態4と重複する部分については、同一符号を付して説明を省略する。
次に、図8を参照して、実施の形態6にかかる回転機1Eについて説明する。図8は、実施の形態6にかかる回転機1Eのブレーキ解放時を示す拡大断面図である。図8では、理解の容易化のため、ハッチングの図示を省略している。なお、実施の形態6では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
次に、図9を参照して、実施の形態7にかかる回転機1Fについて説明する。図9は、実施の形態7にかかる回転機1Fのブレーキ解放時を示す拡大断面図である。なお、実施の形態7では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
次に、図10を参照して、実施の形態8にかかる回転機1Gについて説明する。図10は、実施の形態8にかかる回転機1Gのロータ22を示す断面斜視図である。なお、実施の形態8では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
次に、図11を参照して、実施の形態9にかかる回転機1Hについて説明する。図11は、実施の形態9にかかる回転機1Hのロータ22を示す図である。なお、実施の形態9では、前記した実施の形態8と重複する部分については、同一符号を付して説明を省略する。
次に、図12を参照して、実施の形態10にかかる回転機1Iについて説明する。図12は、実施の形態10にかかる回転機1Iのロータ22を示す斜視図である。なお、実施の形態10では、前記した実施の形態8と重複する部分については、同一符号を付して説明を省略する。
次に、図13を参照して、実施の形態11にかかる回転機1Jについて説明する。図13は、実施の形態11にかかる回転機1Jの制御ブロック図である。なお、実施の形態11では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
次に、図14を参照して、実施の形態12にかかる回転機1Kについて説明する。図14は、実施の形態12にかかる回転機1Kのブレーキ解放時を示す断面図である。なお、実施の形態12では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
次に、図15を参照して、実施の形態13にかかる回転機1Lについて説明する。図15は、実施の形態13にかかる回転機1Lのブレーキ解放時を示す断面図である。なお、実施の形態13では、前記した実施の形態12と重複する部分については、同一符号を付して説明を省略する。
次に、図16を参照して、実施の形態14にかかる回転機1Mについて説明する。図16は、実施の形態14にかかる回転機1Mのブレーキ解放時を示す断面図である。図16では、ブレーキ解放時にブレーキコイル9から発生する磁束の流れと回転磁界による磁束Mの流れとを模式的に示している。なお、実施の形態14では、前記した実施の形態12と重複する部分については、同一符号を付して説明を省略する。
次に、図17を参照して、実施の形態15にかかる回転機1Nについて説明する。図17は、実施の形態15にかかる回転機1Nのブレーキ作動時を示す断面図である。なお、実施の形態15では、前記した実施の形態1と重複する部分については、同一符号を付して説明を省略する。
Claims (9)
- 円筒形状のステータと、前記ステータの内周側に前記ステータと隙間を空けて設けられたロータと、前記ロータを貫通するように設けられたシャフトとを有するモータ部と、
前記モータ部を制動するブレーキ部と、を備え、
前記ブレーキ部は、
前記シャフトの外周面に固定されて前記シャフトの回転に伴って回転する回転板と、
前記モータ部の回転軸の軸方向に沿って前記回転板に接近および離隔する方向にスライド可能に設けられたスライド板と、
ばね力によって前記スライド板を前記回転板に向かって付勢するばね部材と、
前記軸方向において前記ばね部材を挟んで前記スライド板と反対側に配置されて、前記ばね部材の前記ばね力に抗して前記スライド板を前記回転板から離隔する方向に吸引可能な電磁石と、を有し、
前記電磁石は、
前記シャフトが通される円筒形状の内側円筒部と、前記内側円筒部の外周側に前記内側円筒部と空間を介して設けられた円筒形状の外側円筒部とを含むヨークと、
前記内側円筒部と前記外側円筒部との間に形成された前記空間に配置されたブレーキコイルと、を有し、
前記ヨークは、前記軸方向において前記スライド板と前記ロータとの間に、前記スライド板および前記ロータと隙間を空けて配置され、
前記ブレーキコイルは、前記軸方向において前記ロータと隣接して配置され、
前記ブレーキコイルが通電されると、前記スライド板は、前記内側円筒部および前記外側円筒部の両方に接近することを特徴とする回転機。 - 前記ヨークは、前記内側円筒部と前記外側円筒部とを接続して、前記内側円筒部の厚さおよび前記外側円筒部の厚さよりも薄い薄肉部を含むことを特徴とする請求項1に記載の回転機。
- 前記ブレーキコイルの外径と前記ロータの外径とは、同径であり、
前記外側円筒部の外径と前記ステータの外径とは、同径であることを特徴とする請求項1または2に記載の回転機。 - 前記内側円筒部と前記ロータとの間に形成される前記軸方向に沿う隙間を第1の隙間、前記ロータと前記ステータとの間に形成される径方向に沿う隙間を第2の隙間、前記外側円筒部と前記スライド板との間に形成される前記軸方向に沿う隙間を第3の隙間、前記内側円筒部と前記スライド板との間に形成される前記軸方向に沿う隙間を第4の隙間としたときに、
前記ブレーキコイルが通電された状態で、第2の隙間>第1の隙間>第3の隙間、第4の隙間≧0mmの関係を満たすことを特徴とする請求項1から3のいずれか1項に記載の回転機。 - 前記モータ部の制御回路と前記ブレーキコイルの制御回路とが一体化された制御部を備えることを特徴とする請求項1から4のいずれか1項に記載の回転機。
- 前記軸方向において前記モータ部を挟んで前記ブレーキコイルと反対側に配置されている励磁コイルを備えることを特徴とする請求項1から5のいずれか1項に記載の回転機。
- 前記ロータは、クローポール型、または、前記クローポール型とコンシクエントポール型との混合型であり、永久磁石を有し、
前記ブレーキコイルの通電方向と前記励磁コイルの通電方向とは、同じであることを特徴とする請求項6に記載の回転機。 - 前記ロータは、コンシクエントポール型であり、永久磁石を有し、
前記ブレーキコイルの通電方向と前記励磁コイルの通電方向とは、互いに逆であることを特徴とする請求項6に記載の回転機。 - 前記シャフトに取り付けられた減速機と、
前記減速機の出力側に設けられて前記モータ部の回転角度を検出する角度検出器と、
前記モータ部の電圧または前記モータ部の電流に基づき前記モータ部の回転角度を推定する制御回路と、を備え、
前記減速機は、前記軸方向において前記モータ部を挟んで前記ブレーキ部と反対側に配置されていることを特徴とする請求項1から8のいずれか1項に記載の回転機。
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US18/269,953 US20230396126A1 (en) | 2021-01-14 | 2021-01-14 | Rotator |
CN202180089688.3A CN116802972A (zh) | 2021-01-14 | 2021-01-14 | 旋转机 |
DE112021006808.3T DE112021006808T5 (de) | 2021-01-14 | 2021-01-14 | Rotator |
PCT/JP2021/001049 WO2022153438A1 (ja) | 2021-01-14 | 2021-01-14 | 回転機 |
JP2022574951A JP7415050B2 (ja) | 2021-01-14 | 2021-01-14 | 回転機 |
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PCT/JP2021/001049 WO2022153438A1 (ja) | 2021-01-14 | 2021-01-14 | 回転機 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009131148A (ja) * | 2007-11-19 | 2009-06-11 | Siemens Ag | ロータに直接磁気ブレーキを設けた電気機械 |
WO2015092887A1 (ja) * | 2013-12-18 | 2015-06-25 | 株式会社安川電機 | ブレーキ付きモータ |
WO2015181900A1 (ja) * | 2014-05-27 | 2015-12-03 | 株式会社安川電機 | 回転電機 |
-
2021
- 2021-01-14 US US18/269,953 patent/US20230396126A1/en active Pending
- 2021-01-14 JP JP2022574951A patent/JP7415050B2/ja active Active
- 2021-01-14 DE DE112021006808.3T patent/DE112021006808T5/de active Pending
- 2021-01-14 CN CN202180089688.3A patent/CN116802972A/zh active Pending
- 2021-01-14 WO PCT/JP2021/001049 patent/WO2022153438A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009131148A (ja) * | 2007-11-19 | 2009-06-11 | Siemens Ag | ロータに直接磁気ブレーキを設けた電気機械 |
WO2015092887A1 (ja) * | 2013-12-18 | 2015-06-25 | 株式会社安川電機 | ブレーキ付きモータ |
WO2015181900A1 (ja) * | 2014-05-27 | 2015-12-03 | 株式会社安川電機 | 回転電機 |
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