WO2011007602A1 - Parking device and electric motor unit equipped with the same - Google Patents

Parking device and electric motor unit equipped with the same Download PDF

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Publication number
WO2011007602A1
WO2011007602A1 PCT/JP2010/055156 JP2010055156W WO2011007602A1 WO 2011007602 A1 WO2011007602 A1 WO 2011007602A1 JP 2010055156 W JP2010055156 W JP 2010055156W WO 2011007602 A1 WO2011007602 A1 WO 2011007602A1
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WO
WIPO (PCT)
Prior art keywords
parking
pole
rod
gear
parking pole
Prior art date
Application number
PCT/JP2010/055156
Other languages
French (fr)
Japanese (ja)
Inventor
整治 神永
Original Assignee
愛知機械工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 愛知機械工業株式会社 filed Critical 愛知機械工業株式会社
Priority to JP2011522750A priority Critical patent/JP5322323B2/en
Publication of WO2011007602A1 publication Critical patent/WO2011007602A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F16H63/3416—Parking lock mechanisms or brakes in the transmission
    • F16H63/3425—Parking lock mechanisms or brakes in the transmission characterised by pawls or wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/005—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles by locking of wheel or transmission rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts

Definitions

  • the present invention relates to a parking device, and more particularly, to a parking device that engages a parking pole with a parking gear to perform parking locking, and an electric motor unit that performs parking locking or releasing the parking lock by the parking device.
  • this type of parking device includes a locking member having teeth engageable with a parking gear, a connecting rod connected to the locking member so as to be slidable integrally with the locking member, and an outer peripheral surface.
  • An operating member inserted into the connecting rod so as to be slidable relative to the locking member is formed, and the locking member and the operating member are arranged between the locking member and the operating member.
  • a coil spring that urges a spring force in a separating direction
  • an electric motor having a pinion that meshes with a rack of an operation member
  • such a parking device not only has a large number of parts and a complicated structure, but also requires a space for slidably housing the locking member and the operating member in a case, a housing, or the like.
  • a parking device and an electric motor unit including the same according to the present invention are mainly intended to perform parking lock and release of the parking lock with a simpler structure.
  • the present invention adopts the following means in order to achieve at least a part of the main object described above.
  • the parking apparatus of the present invention A parking device that engages a parking pole with a parking gear to perform a parking lock, A linear motion actuator having a rod connected to the parking pole via a spring member; The linear motion actuator moves the rod in the first direction, which is an axial direction in which the spring member is allowed to bend, and rotates the parking pole via the spring member.
  • a parking pole is engaged with the parking gear, and the rod or the spring member is moved in a second direction which is a direction opposite to the first direction and in which the bending of the spring member is restricted.
  • the gist is to release the engagement of the parking pole with respect to the parking gear by rotating the parking pole while contacting the parking pole.
  • the linear motion actuator having a rod connected to the parking pole via the spring member has a first direction in which the rod is axial and the deflection of the spring member is allowed.
  • the parking pole is engaged with the parking gear by rotating the parking pole through the spring member, and the rod is moved in the direction opposite to the first direction and the bending of the spring member is restricted.
  • the parking pole is disengaged from the parking gear by moving in a certain second direction to bring the rod or spring member into contact with the parking pole and rotating the parking pole. Since only the direct acting actuator and the spring member that connects the rod of the direct acting actuator and the parking pole are provided, the parking lock and the parking lock can be released with a simpler structure.
  • the spring member may have a leaf spring. If it carries out like this, a parking lock and cancellation
  • the spring member has a leaf spring, the leaf spring is fixed at the other end to the parking pole so that one end is a free end, and the rod is connected to the free end.
  • a predetermined portion may be formed so as to come into contact with the parking pole when moving in the second direction.
  • the parking pole is engaged with the parking gear by moving the rod in the first direction and rotating the parking pole via the spring member, and the rod is moved in the second direction opposite to the first direction.
  • a structure for releasing the engagement of the parking pole with respect to the parking gear can be easily ensured by moving and bringing the rod into contact with the parking pole and rotating the parking pole.
  • the parking pole in which the spring member has a leaf spring
  • the parking pole has a step on the surface, and the leaf spring is arranged to face the lower step surface where the free end forms the step.
  • the other end is fixed to the upper step surface forming the step, and the rod may be connected to the free end so that the tip portion can come into contact with the lower step surface. .
  • the parking pole is engaged with the parking gear by moving the rod in the first direction and rotating the parking pole via the spring member, and the rod is moved in the second direction opposite to the first axial direction.
  • releases the engagement with respect to the parking gear of a parking pole can be ensured more simply by moving to, making a rod contact
  • the leaf spring is fixed to the parking pole at the other end so that one end is a free end, and the rod is at the free end.
  • the free end may be connected to a predetermined portion of the parking pole when the rod moves in the second direction, so that bending is restricted.
  • the parking pole has a step on the surface, and the leaf spring faces the lower step surface where the free end forms the step.
  • the other end is fixed to the upper step surface forming the step so that the other end is arranged, and the bending of the free end is restricted by contacting the lower step surface.
  • the rod may be rotatably connected to the leaf spring.
  • the parking apparatus of the present invention further includes a housing capable of accommodating the parking apparatus according to any one of claims 1 to 7, wherein the direct acting actuator is rotatable in conjunction with the rotation of the parking pole. It can also be supported by the housing. In this way, it is possible to appropriately cope with the swinging behavior of the rod that occurs as the parking pole rotates due to the movement of the rod in the second direction.
  • the parking gear may be formed at a pressure angle at which a tooth portion can self-lock. In this way, even if the driving of the direct acting actuator is stopped after the parking gear and the parking pole are engaged, the engagement between the parking gear and the parking pole can be prevented from being released. As a result, power efficiency can be improved.
  • the electric motor unit of the present invention is An electric motor having a rotor shaft and a rotor that rotates integrally with the rotor shaft; a speed reducer having a first shaft connected to the rotor shaft and a second shaft connected to the first shaft via a gear mechanism; An electric motor unit including The gist is that the parking gear is fixed to the first shaft or the second shaft, and the parking lock of the electric motor unit or the parking lock is released by the parking device according to any one of claims 1 to 9.
  • the parking lock of the electric motor unit or the parking lock is released by the parking device of the present invention of any of the above-described aspects, the same effects as the effects of the parking device of the present invention, for example, The parking lock and the parking lock can be released with a simpler structure.
  • FIG. 1 is a configuration diagram showing an outline of a configuration of an electric motor unit 1 equipped with a parking device 20 as an embodiment of the present invention.
  • FIG. 2 is a configuration diagram showing an outline of the configuration of the parking apparatus 20.
  • FIG. 3 is an enlarged view in which the tip of the parking pole 26 is enlarged.
  • FIG. 4 is an enlarged view showing the distal end portion of the leaf spring 28 in an enlarged manner.
  • FIG. 5 is an arrow view of FIG. 4 viewed from the direction of arrow V.
  • FIG. 6 is a configuration diagram showing an outline of the configuration of the direct acting actuator 30.
  • FIG. 7 is a cross-sectional view showing the YY cross section of FIG.
  • FIG. 8 is a state diagram showing a state in which the parking lock is completed.
  • FIG. 9 is a state diagram showing a parking lock waiting state.
  • FIG. 10 is an enlarged view showing a state in which the protruding portion 80 is formed on the lower step surface 29 b ′′ forming the step of the large step portion 29 b of the parking pole 26.
  • FIG. 11 is an arrow view when FIG. 10 is viewed from the direction of the arrow W.
  • FIG. 12 is an enlarged view showing a state in which the protruding portion 180 is formed on the leaf spring 28 in an enlarged manner.
  • FIG. 13 is an arrow view when FIG. 12 is viewed from the direction of the arrow X.
  • FIG. 14 is a configuration diagram showing a parking device 320 according to a modification.
  • FIG. 15 is a configuration diagram showing a parking device 320 according to a modification.
  • FIG. 16 is a configuration diagram showing a parking device 420 according to a further modification.
  • FIG. 1 is a configuration diagram showing an outline of the configuration of an electric motor unit 1 equipped with a parking device 20 as an embodiment of the present invention
  • FIG. 2 is a configuration diagram showing an outline of the configuration of the parking device 20.
  • the electric motor unit 1 of the embodiment mainly includes an electric motor MG, a reduction gear 40 connected to the rotor shaft 2 of the electric motor MG, and a differential device 50 connected to the reduction gear 40 via a ring gear RG.
  • the parking device 20 of the embodiment that can prevent the rotation of the input shaft 42 of the reduction gear 40.
  • the electric motor MG includes a stator 4 and a rotor 6 attached to the rotor shaft 2.
  • the stator 4 is obtained by winding a coil wire around mild steel or the like, and receives a power supply from the outside to change the magnetic field every moment.
  • the rotor 6 rotates as the magnetic field of the stator 4 changes, and this rotation is taken out by the rotor shaft 2 and transmitted to the speed reducer 40.
  • the reduction gear 40 includes an input shaft 42 that is spline-fitted to the rotor shaft 2 of the electric motor MG and rotates coaxially, and an output shaft 46 that is connected to the input shaft 42 via a gear mechanism 44, and rotates the input shaft 42. The number is decelerated and transmitted to the output shaft 46.
  • the gear mechanism 44 includes a first gear 47 integrally formed on the input shaft 42, and a second gear 48 that meshes with the first gear 47, has a diameter larger than that of the first gear 47, and has a larger number of teeth.
  • the second gear 48 is fixed to the output shaft 46 by spline press fitting or the like.
  • An output gear OG is integrally formed on the output shaft 46, and the ring gear RG of the differential device 50 is meshed.
  • the differential device 50 is configured as a differential mechanism capable of transmitting the power from the output shaft 46 to the left and right axles 52 and 54 and absorbing the difference in rotational speed between the left and right axles 52 and 54. As shown in FIGS.
  • the parking device 20 includes a parking gear 22 fixed to the input shaft 42 of the speed reduction device 40 by spline press fitting or the like, and a pole shaft disposed in parallel with the input shaft 42 of the speed reduction device 40. Parking is carried out via a parking pole 26, which is rotatably supported by 24, a stopper pin 23 which stands upright from the case 3 and abuts against the tip of the parking pole 26 and restricts the rotation of the parking pole 26, and a leaf spring 28. A direct acting actuator 30 connected to the pole 26.
  • the parking gear 22 is formed as a well-known parking gear having a plurality of teeth on the outer peripheral surface.
  • the tooth portion of the parking gear 22 is formed at a pressure angle (for example, 9 ° or less) that can be self-locked so that the engagement with the parking pole 26 is difficult to be released without applying an external force.
  • the parking pawl 26 is formed with an engaging claw 26 a that can mesh with a tooth portion of the parking gear 22, and the engaging claw 26 a is separated from the tooth portion of the parking gear 22 by a winding spring 27 inserted and supported by the pole shaft 24. It is biased in the direction of separation. Further, as shown in FIG. 2, a step is formed on the surface of the front end of the parking pole 26 that faces the parking gear 22, and this step is different from the front end of the parking pole 26 in FIG.
  • a small step portion 29a is formed at a position slightly toward the distal end side from the root portion 26b of the engaging claw 26a, and is formed at a position further toward the distal end side from the small step portion 29a.
  • a large step portion 29b is formed continuously, and the upper step surface 29b ′ forming the step of the large step portion 29b is the lower step surface 29b ′ forming the step of the small step portion 29a.
  • the upper step surface 29b ′ forming the step of the large step portion 29b and the lower step surface 29b ′′ forming the step of the large step portion 29b are substantially parallel and connected by the inclined surface 29c.
  • FIG. 4 is an enlarged view showing the distal end portion of the leaf spring 28 in an enlarged manner
  • FIG. 5 is an arrow view of FIG.
  • the leaf spring 28 is formed of a belt-shaped spring steel, and as shown in FIG. 3, one end is fixed to an upper step surface 29b ′ forming a step of the large step portion 29b of the parking pole 26 by a fastening part such as a bolt, The other end is a free end facing the lower step surface 29 b ′′ forming the step of the large step portion 29 b of the parking pole 26.
  • the tip portion that forms the free end of the leaf spring 28 is divided into two parts, and as shown in FIG. 5, a bent portion 28 a is bent into an annular shape.
  • FIG. 6 is a block diagram showing an outline of the configuration of the direct acting actuator 30, and FIG. 7 is a cross-sectional view showing a YY cross section of FIG.
  • the direct acting actuator 30 is inserted into the motor shaft 34 so as to be rotatable and axially movable with respect to the stator 32, the rotor 36 attached to the motor shaft 34, and the motor shaft 34.
  • Actuator rods 38 which are housed in a housing 39.
  • the bracket BR is fixed on both sides (left and right in FIG. 7) by fastening parts such as bolts so as to surround the outer periphery of the housing 39, as shown in FIG.
  • the linear actuator 30 is attached to the cases 41a and 41b via the bracket BR so that the pin member Pm is in the same axial direction as the input shaft 42, the output shaft 46, the pole shaft 24, and the like.
  • the first gear 47, the second gear 48, the parking gear 22, and the like can be rotated in the same rotational direction.
  • the motor shaft 34 is formed as a hollow shaft, and an internal thread 34a is formed on the inner peripheral surface.
  • a male screw 38 a that meshes with the female screw 34 a of the motor shaft 34 is formed on the outer peripheral surface of the actuator rod 38, and moves in the axial direction as the motor shaft 34 rotates. Further, as shown in FIG. 6, a through hole 38b is formed near the tip of the actuator rod 38. 2, 4 and 5, the actuator rod 38 is disposed between the two ends of the leaf spring 28, and the other end of the actuator rod 38 is bent from one bent portion 28a of the leaf spring 28 through the through hole 38b. It is connected to the leaf spring 28 by a pin P that is inserted up to the bent portion 28a.
  • the actuator rod 38 is pivotally connected to the leaf spring 28 by the pin P, so that the change in the connection state between the actuator rod 38 and the leaf spring 28 caused by the rotation of the parking pole 26 can be appropriately handled. be able to.
  • the tip of the actuator rod 38 is close to the lower cross section 29b '' forming the step of the large step portion 29b of the parking pole 26 as shown in FIG. Are facing each other.
  • the actuator rod 38 is connected to the parking pole 26 via the leaf spring 28 on the tip side of the engaging claw 26a, so that the parking lock and the parking lock are released.
  • the force required to rotate the parking pole 26 can be relatively small. As a result, the direct acting actuator 30 can be made compact.
  • FIG. 8 is a state diagram showing a state where the parking lock is completed
  • FIG. 9 is a state diagram showing a parking lock waiting state.
  • the actuator rod 38 is axially moved in the direction in which the parking pole 26 is attracted to the linear actuator 30 via the leaf spring 28, that is, in the direction in which the parking pole 26 rotates clockwise. Move.
  • the parking pole 26 rotates clockwise around the pole shaft 24 as shown in FIG. 8, and the engaging claw 26a engages with the parking gear 22 to complete the parking lock.
  • the engaging pawl 26 a of the parking pole 26 comes into contact with the teeth of the parking gear 22 to prevent the parking pole 26 from rotating, and the parking lock May not be completed.
  • the actuator rod 38 continues to move in the axial direction in the direction in which the parking pole 26 is attracted to the direct acting actuator 30 side, and the leaf spring 28 is bent toward the direct acting actuator 30 side.
  • a state in which the rotational force in the direction is energized that is, a waiting state for parking lock is established.
  • the parking pole 26 rotates clockwise by the spring force.
  • the engaging claw 26a engages with the parking gear 22, and the parking lock is completed.
  • a force is generated on the actuator rod 38 in a counterclockwise direction in FIGS. 8 and 9.
  • the direct acting actuator 30 is connected to the case 41a, Since it is rotatably supported by 41b, this force can be absorbed as the swing behavior of the actuator rod 38.
  • the shift lever is operated from the parking range to another range (for example, D range) by the operator, the engagement between the engagement pawl 26a of the parking pole 26 and the parking gear 22 is released, thereby The direct acting actuator 30 is driven and controlled to release the lock. That is, by rotating the motor shaft 34 in the reverse direction to the parking lock, the actuator rod 38 is moved away from the direct acting actuator 30 side, that is, in the direction in which the parking pole 26 rotates counterclockwise. Move in the axial direction.
  • the tip of the actuator rod 38 comes into contact with the lower step surface 29 b ′′ forming the step of the large step portion 29 b of the parking pole 26 and directly rotates the parking pole 26.
  • the engagement between the engagement pawl 26a of the parking pole 26 and the parking gear 22 is quickly released, and the release of the parking lock is completed.
  • a step is formed at the tip of a known parking pole 26, and a leaf spring 28 is attached to the step so that one end is a free end. Since only the actuator rod 38 of the direct acting actuator 30 is connected to the end, the parking lock and the parking lock can be released with a simpler structure.
  • the actuator rod 38 since the actuator rod 38 is rotatably connected to the leaf spring 28 by the pin P, the connection between the actuator rod 38 and the leaf spring 28 caused by the rotation of the parking pole 26 is achieved. It is possible to respond appropriately to changes in state.
  • the case 41a is provided via the bracket BR so that the direct acting actuator 30 can rotate in the same rotational direction as the first gear 47, the second gear 48, the parking gear 22, and the like.
  • 41b the rotation force (counterclockwise in FIGS. 8 and 9) input to the actuator rod 38 as the parking pole 26 rotates during the parking lock is applied to the actuator rod 38. It can be absorbed as a swinging behavior.
  • the tip of the actuator rod 38 when the parking lock is released, the tip of the actuator rod 38 is brought into contact with the lower step surface 29b '' forming the step of the large step portion 29b of the parking pole 26. 28 may be in contact with the lower step surface 29 b ′′ forming the step of the large step portion 29 b of the parking pole 26. In this case, before the tip of the actuator rod 38 contacts the lower step surface 29b '' forming the step of the large step portion 29b of the parking pole 26, the leaf spring 28 forms the step of the large step portion 29b of the parking pole 26.
  • FIG. 10 is an enlarged view showing a state in which the protruding portion 80 is formed on the lower step surface 29b ′′ forming the step of the large step portion 29b of the parking pole 26, and FIG. 11 shows FIG. 10 in the direction of the arrow W.
  • FIG. 10 As shown in FIGS.
  • a leaf spring 28 is provided on a lower step surface 29 b ′′ (a portion facing the bent portion 28 a of the leaf spring 28) forming the step of the large step portion 29 b in the tip portion of the parking pole 26.
  • Protrusions 80 and 80 projecting toward the side are formed.
  • the distance between the bent portion 28a and the projecting portions 80, 80 may be smaller than the distance between the tip of the actuator rod 38 and the lower step surface 29b '', and may be in contact with each other.
  • the lower step surface 29b '' forming the step of the large step portion 29b may be formed by denting the surface facing the tip of the actuator rod 38.
  • FIG. 12 is an enlarged view showing a state in which the protruding portion 180 is formed on the leaf spring 28, and FIG. 13 is an arrow view of FIG.
  • the side of the bent portion 28 a of the leaf spring 28 that faces the lower step surface 29 b ′′ forming the step of the large step portion 29 b of the parking pole 26 faces the lower step surface 29 b ′′.
  • Protruding portions 180 and 180 are formed.
  • the distance between the protrusions 180 and 180 and the lower step surface 29b ′′ may be smaller than the distance between the tip of the actuator rod 38 and the lower step surface 29b ′′, and they may be in contact with each other.
  • the actuator rod 38 is connected to the leaf spring 28 so as to be rotatable. However, the actuator rod 38 may be connected to the leaf spring 28 so as not to rotate, for example, by welding or the like. .
  • the direct acting actuator 30 is rotatably supported by the cases 41a and 41b via the bracket BR. However, the direct acting actuator 30 is non-rotatably supported by the cases 41a and 41b. You can do it.
  • the actuator rod 38 and the parking pole 26 are connected by the leaf spring 28.
  • the actuator rod 38 and the parking pole 26 are modified examples illustrated in FIGS. 14 and 15. As shown in the parking device 320, it may be connected by a coil spring.
  • the actuator rod 338 inserts the tip of the parking pole 326 into the connection bracket 370 attached to the tip of the actuator rod 338, and the coil spring in the connection bracket 370.
  • 328 connects the actuator rod 338 and the parking pole 326 to each other.
  • the insertion hole 372 of the connection bracket 370 is formed in a spherical shape.
  • the direct acting actuator 330 is driven to move the actuator rod 338 in the axial direction to the drawing side (left direction in FIG. 15), as in the parking device 20 of the embodiment.
  • the parking pawl 326 is rotated via the coil spring 328.
  • the parking pawl 326a and the parking gear 22 can be engaged and the parking lock can be performed while enabling the parking lock waiting state.
  • the actuator rod 338 is axially moved to the pushing side (right direction in FIG. 15) from the parking lock state, the spherical surface of the insertion hole 372 of the connection bracket 370 comes into contact with the parking pole 326 so that the parking pole 326 is directly moved. Since it rotates, the parking lock can be quickly released.
  • the insertion hole 372 of the connection bracket 370 is formed in a spherical shape, a change in the connection state between the connection bracket 370 and the parking pole 326 caused by the rotation of the parking pole 326 can be appropriately handled. A decrease in operability can be prevented.
  • the actuator rod 438 is moved in the axial direction to the pushing side (right direction in FIG. 16), whereby the engaging claw 426a and the parking pawl are parked.
  • the gear 22 is engaged to perform the parking lock, and the actuator rod 438 is moved in the axial direction from the parking lock state to the drawing side (left direction in FIG. 16), whereby the spherical surface of the insertion hole 472 of the connection bracket 470 is changed.
  • the parking lock 426 may be abutted and the parking pole 426 may be directly rotated to release the parking lock.

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  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

A step is formed on the tip of a well-known parking pawl (26), a flat spring (28) is attached in a manner such that one edge of the step is a free edge, and the actuator rod (38) of a direct coupled actuator (30) is connected to the free end of the flat spring (28). When engaging a parking brake, the actuator rod (38) is moved in the axial direction and the parking pawl (26) is rotated via the flat spring (28); and when releasing the parking brake, the actuator rod (38) is moved in the opposite axial direction to when the parking brake was engaged, the tip of the actuator rod (38) directly touches the parking pawl (26), and the parking pawl (26) rotates. Since this is all that is involved, the parking brake can be engaged and released with an even simpler structure.

Description

パーキング装置およびこれを備える電動機ユニットParking device and electric motor unit including the same
　本発明は、パーキング装置に関し、詳しくは、パーキングギヤにパーキングポールを係合してパーキングロックを行なうパーキング装置および、このパーキング装置によりパーキングロックまたはパーキングロックの解除を行う電動機ユニットに関する。 The present invention relates to a parking device, and more particularly, to a parking device that engages a parking pole with a parking gear to perform parking locking, and an electric motor unit that performs parking locking or releasing the parking lock by the parking device.
　従来、この種のパーキング装置としては、パーキングギヤと係合可能な歯を有する係止部材と、係止部材と一体摺動可能なように係止部材に連結された連結棒と、外周面にラックが形成されるとともに係止部材に対して相対摺動可能なように連結棒に挿通された作動部材と、係止部材と作動部材との間に配置され係止部材と作動部材とを互いに離隔する方向のスプリング力を付勢するコイルスプリングと、作動部材のラックと噛み合うピニオンを有する電動モータと、を備えるものが提案されている（例えば、特許文献１参照）。
　この装置では、電動モータを回転して作動部材をパーキングギヤ側に摺動することによりコイルスプリングを介して係止部材をパーキングギヤ側に摺動させ、係止部材の歯とパーキングギヤとを係合させるとともに、この状態から電動モータを逆回転して作動部材をパーキングギヤ側とは反対側に摺動することにより、コイルスプリングを介さずに係止部材をパーキングギヤ側とは反対側に摺動させて係止部材の歯とパーキングギヤとの係合を解除する。
特開２００４−３５３７３９号公報 Conventionally, this type of parking device includes a locking member having teeth engageable with a parking gear, a connecting rod connected to the locking member so as to be slidable integrally with the locking member, and an outer peripheral surface. An operating member inserted into the connecting rod so as to be slidable relative to the locking member is formed, and the locking member and the operating member are arranged between the locking member and the operating member. There has been proposed one including a coil spring that urges a spring force in a separating direction and an electric motor having a pinion that meshes with a rack of an operation member (for example, see Patent Document 1).
In this device, by rotating the electric motor and sliding the operating member toward the parking gear, the locking member is slid toward the parking gear via the coil spring, and the teeth of the locking member and the parking gear are engaged. In this state, the electric motor is rotated in the reverse direction and the operating member is slid to the opposite side to the parking gear side, so that the locking member is slid to the opposite side to the parking gear side without a coil spring. The engagement between the teeth of the locking member and the parking gear is released.
JP 2004-353739 A
　しかしながら、こうしたパーキング装置では、部品点数が多く、構造も複雑であるばかりでなく、係止部材や作動部材を摺動可能に収容するスペースをケースやハウジングなどに別途設ける必要がある。 However, such a parking device not only has a large number of parts and a complicated structure, but also requires a space for slidably housing the locking member and the operating member in a case, a housing, or the like.
　本発明のパーキング装置およびこれを備える電動機ユニットは、より簡易な構造でパーキングロックおよびパーキングロックの解除を行なうことを主目的とする。
　本発明は、上述の主目的の少なくとも一部を達成するために以下の手段を採った。
　本発明のパーキング装置は、
　パーキングギヤにパーキングポールを係合してパーキングロックを行なうパーキング装置であって、
　バネ部材を介して前記パーキングポールに接続されたロッドを有する直動式アクチュエータを備え、
　該直動式アクチュエータは、前記ロッドを軸方向であって前記バネ部材の撓みが許容された方向である第１方向へ移動して前記バネ部材を介して前記パーキングポールを回動することによって前記パーキングポールを前記パーキングギヤへ係合し、前記ロッドを前記第１方向とは逆方向であって前記バネ部材の撓みが規制された方向である第２方向に移動して前記ロッドまたは前記バネ部材を前記パーキングポールに当接させて該パーキングポールを回動することによって前記パーキングポールの前記パーキングギヤに対する係合を解除する
　ことを要旨とする。
　この本発明のパーキング装置では、バネ部材を介してパーキングポールに接続されたロッドを有する直動式アクチュエータが、ロッドを軸方向であって前記バネ部材の撓みが許容された方向である第１方向へ移動してバネ部材を介してパーキングポールを回動することによってパーキングポールをパーキングギヤに係合し、ロッドを第１方向とは逆方向であって前記バネ部材の撓みが規制された方向である第２方向に移動してロッドまたはバネ部材をパーキングポールに当接させてパーキングポールを回動することによってパーキングポールのパーキングギヤに対する係合を解除する。
　直動式アクチュエータと、この直動式アクチュエータのロッドとパーキングポールとを接続するバネ部材とを設けるだけだから、より簡易な構造でパーキングロックおよびパーキングロックの解除を行うことができる。
　こうした本発明のパーキング装置において、前記バネ部材は、板バネを有するものとすることもできる。
　こうすれば、簡易な部材を用いてパーキングロックおよびパーキングロックの解除を行うことができる。
　このバネ部材が板バネを有する態様の本発明のパーキング装置において、前記板バネは、一端が自由端となるよう他端を前記パーキングポールに固定されてなり、前記ロッドは、前記自由端に接続されるとともに前記第２方向に移動する際に所定箇所が前記パーキングポールに当接するよう形成されてなるものとすることもできる。
　こうすれば、ロッドを第１方向へ移動してバネ部材を介してパーキングポールを回動することによってパーキングポールをパーキングギヤに係合し、ロッドを第１方向とは逆方向の第２方向に移動してロッドをパーキングポールに当接させてパーキングポールを回動することによってパーキングポールのパーキングギヤに対する係合を解除する構造を簡易に確保することができる。
　また、バネ部材が板バネを有する態様の本発明のパーキング装置において、前記パーキングポールは、表面に段差を有し、前記板バネは、前記自由端が前記段差をなす下段面に対向して配置されるよう前記他端を前記段差をなす上段面に固定されてなり、前記ロッドは、先端部が前記下段面と当接可能なように前記自由端に接続されてなるものとすることもできる。
　こうすれば、ロッドを第１方向へ移動してバネ部材を介してパーキングポールを回動することによってパーキングポールをパーキングギヤに係合し、ロッドを第１軸方向とは逆方向の第２方向に移動してロッドをパーキングポールに当接させてパーキングポールを回動することによってパーキングポールのパーキングギヤに対する係合を解除する構造をより簡易に確保することができる。
　さらに、バネ部材が板バネを有する態様の本発明のパーキング装置において、前記板バネは、一端が自由端となるよう他端を前記パーキングポールに固定されてなり、前記ロッドは、前記自由端に接続されてなり、前記自由端は、前記ロッドが前記第２方向へ移動する際に前記パーキングポールの所定箇所に当接して撓みが規制されてなるものとすることもできる。
　こうすれば、ロッドを第１軸方向へ移動してバネ部材を介してパーキングポールを回動することによってパーキングポールをパーキングギヤに係合し、ロッドを第１方向とは逆方向の第２方向に移動して板バネをパーキングポールに当接させてパーキングポールを回動することによってパーキングポールのパーキングギヤに対する係合を解除する構造を簡易に確保することができる。
　この板バネの自由端の撓みが規制される態様の本発明のパーキング装置において、前記パーキングポールは、表面に段差を有し、前記板バネは、前記自由端が前記段差をなす下段面に対向して配置されるよう前記他端を前記段差をなす上段面に固定されてなり、前記自由端は、前記下段面に当接することにより撓みが規制されてなるものとすることもできる。
　こうすれば、ロッドを第１方向へ移動してバネ部材を介してパーキングポールを回動することによってパーキングポールをパーキングギヤに係合し、ロッドを第１軸方向とは逆方向の第２方向に移動してバネ部材をパーキングポールに当接させてパーキングポールを回動することによってパーキングポールのパーキングギヤに対する係合を解除する構造をより簡易に確保することができる。
　本発明のパーキング装置において、前記ロッドは、前記板バネに対して回転可能に接続されてなるものとすることもできる。
　こうすれば、ロッドの第２軸方向移動によってパーキングポールが回動するのに伴い生ずるロッドと板バネとの接続状態の変化に適正に対応することができる。
　また、本発明のパーキング装置において、請求項１ないし７いずれか記載のパーキング装置を収容可能な筐体を備え、前記直動式アクチュエータは、前記パーキングポールの回動に連動して回転可能なように前記筐体に支持されてなるものとすることもできる。
　こうすれば、ロッドの第２方向移動によってパーキングポールが回動するのに伴い生ずるロッドの首振り挙動に適正に対応することができる。
　さらに、本発明のパーキング装置において、前記パーキングギヤは、歯部がセルフロック可能な圧力角に形成されてなるものとすることもできる。
　こうすれば、パーキングギヤとパーキングポールとが係合したあとに直動式アクチュエータの駆動を停止したとしても、パーキングギヤとパーキングポールとの係合が解除されるのを防止することができる。この結果、電力の効率化を図ることができる。
　本発明の電動機ユニットは、
　ロータシャフトと該ロータシャフトと一体回転するロータとを有する電動機と、前記ロータシャフトに接続された第１軸と該第１軸にギヤ機構を介して接続された第２軸とを有する減速機と、を含む電動機ユニットであって、
　前記第１軸または前記第２軸に前記パーキングギヤを固定して、請求項１ないし９いずれか記載のパーキング装置により前記電動機ユニットのパーキングロックまたはパーキングロックの解除を行なう
　ことを要旨とする。
　この本発明の電動機ユニットでは、上述した各態様のいずれかの本発明のパーキング装置により電動機ユニットのパーキングロックまたはパーキングロックの解除を行うから、本発明のパーキング装置が奏する効果と同様の効果、例えば、より簡易な構造でパーキングロックおよびパーキングロックの解除を行うことができる効果を奏することができる。 A parking device and an electric motor unit including the same according to the present invention are mainly intended to perform parking lock and release of the parking lock with a simpler structure.
The present invention adopts the following means in order to achieve at least a part of the main object described above.
The parking apparatus of the present invention
A parking device that engages a parking pole with a parking gear to perform a parking lock,
A linear motion actuator having a rod connected to the parking pole via a spring member;
The linear motion actuator moves the rod in the first direction, which is an axial direction in which the spring member is allowed to bend, and rotates the parking pole via the spring member. A parking pole is engaged with the parking gear, and the rod or the spring member is moved in a second direction which is a direction opposite to the first direction and in which the bending of the spring member is restricted. The gist is to release the engagement of the parking pole with respect to the parking gear by rotating the parking pole while contacting the parking pole.
In the parking apparatus of the present invention, the linear motion actuator having a rod connected to the parking pole via the spring member has a first direction in which the rod is axial and the deflection of the spring member is allowed. The parking pole is engaged with the parking gear by rotating the parking pole through the spring member, and the rod is moved in the direction opposite to the first direction and the bending of the spring member is restricted. The parking pole is disengaged from the parking gear by moving in a certain second direction to bring the rod or spring member into contact with the parking pole and rotating the parking pole.
Since only the direct acting actuator and the spring member that connects the rod of the direct acting actuator and the parking pole are provided, the parking lock and the parking lock can be released with a simpler structure.
In the parking apparatus according to the present invention, the spring member may have a leaf spring.
If it carries out like this, a parking lock and cancellation | release of a parking lock can be performed using a simple member.
In the parking device of the present invention in which the spring member has a leaf spring, the leaf spring is fixed at the other end to the parking pole so that one end is a free end, and the rod is connected to the free end. In addition, a predetermined portion may be formed so as to come into contact with the parking pole when moving in the second direction.
By doing so, the parking pole is engaged with the parking gear by moving the rod in the first direction and rotating the parking pole via the spring member, and the rod is moved in the second direction opposite to the first direction. A structure for releasing the engagement of the parking pole with respect to the parking gear can be easily ensured by moving and bringing the rod into contact with the parking pole and rotating the parking pole.
Further, in the parking device of the present invention in which the spring member has a leaf spring, the parking pole has a step on the surface, and the leaf spring is arranged to face the lower step surface where the free end forms the step. The other end is fixed to the upper step surface forming the step, and the rod may be connected to the free end so that the tip portion can come into contact with the lower step surface. .
By doing so, the parking pole is engaged with the parking gear by moving the rod in the first direction and rotating the parking pole via the spring member, and the rod is moved in the second direction opposite to the first axial direction. The structure which cancels | releases the engagement with respect to the parking gear of a parking pole can be ensured more simply by moving to, making a rod contact | abut a parking pole, and rotating a parking pole.
Furthermore, in the parking device of the present invention in which the spring member has a leaf spring, the leaf spring is fixed to the parking pole at the other end so that one end is a free end, and the rod is at the free end. The free end may be connected to a predetermined portion of the parking pole when the rod moves in the second direction, so that bending is restricted.
By doing so, the parking pole is engaged with the parking gear by moving the rod in the first axial direction and rotating the parking pole via the spring member, and the rod is moved in the second direction opposite to the first direction. The structure of releasing the engagement of the parking pole with respect to the parking gear can be easily ensured by moving the plate spring to contact the parking pole and rotating the parking pole.
In the parking device of the present invention in which the bending of the free end of the leaf spring is regulated, the parking pole has a step on the surface, and the leaf spring faces the lower step surface where the free end forms the step. The other end is fixed to the upper step surface forming the step so that the other end is arranged, and the bending of the free end is restricted by contacting the lower step surface.
By doing so, the parking pole is engaged with the parking gear by moving the rod in the first direction and rotating the parking pole via the spring member, and the rod is moved in the second direction opposite to the first axial direction. It is possible to more easily secure a structure for releasing the engagement of the parking pole with respect to the parking gear by rotating the parking pole by moving the spring member into contact with the parking pole.
In the parking apparatus according to the present invention, the rod may be rotatably connected to the leaf spring.
In this way, it is possible to appropriately cope with a change in the connection state between the rod and the leaf spring that occurs as the parking pole rotates due to the movement of the rod in the second axial direction.
The parking apparatus of the present invention further includes a housing capable of accommodating the parking apparatus according to any one of claims 1 to 7, wherein the direct acting actuator is rotatable in conjunction with the rotation of the parking pole. It can also be supported by the housing.
In this way, it is possible to appropriately cope with the swinging behavior of the rod that occurs as the parking pole rotates due to the movement of the rod in the second direction.
Furthermore, in the parking apparatus of the present invention, the parking gear may be formed at a pressure angle at which a tooth portion can self-lock.
In this way, even if the driving of the direct acting actuator is stopped after the parking gear and the parking pole are engaged, the engagement between the parking gear and the parking pole can be prevented from being released. As a result, power efficiency can be improved.
The electric motor unit of the present invention is
An electric motor having a rotor shaft and a rotor that rotates integrally with the rotor shaft; a speed reducer having a first shaft connected to the rotor shaft and a second shaft connected to the first shaft via a gear mechanism; An electric motor unit including
The gist is that the parking gear is fixed to the first shaft or the second shaft, and the parking lock of the electric motor unit or the parking lock is released by the parking device according to any one of claims 1 to 9.
In the electric motor unit of the present invention, since the parking lock of the electric motor unit or the parking lock is released by the parking device of the present invention of any of the above-described aspects, the same effects as the effects of the parking device of the present invention, for example, The parking lock and the parking lock can be released with a simpler structure.
　図１は、本発明の一実施形態としてのパーキング装置２０を搭載した電動機ユニット１の構成の概略を示す構成図である。
　図２は、パーキング装置２０の構成の概略を示す構成図である。
　図３は、パーキングポール２６の先端部を拡大した拡大図である。
　図４は、板バネ２８の先端部を拡大して示す拡大図である。
　図５は、図４を矢印Ｖの方向から視た矢視図である。
　図６は、直動式アクチュエータ３０の構成の概略を示す構成図である。
　図７は、図２のＹ−Ｙ断面を示す断面図である。
　図８は、パーキングロックが完了した状態を示す状態図である。
　図９は、パーキングロックの待ち状態を示す状態図である。
　図１０は、パーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に突起部８０を形成した様子を拡大して示す拡大図である。
　図１１は、図１０を矢印Ｗの方向から視た矢視図である。
　図１２は、板バネ２８に突起部１８０を形成した様子を拡大して示す拡大図である。
　図１３は、図１２を矢印Ｘの方向から視た矢視図である。
　図１４は、変形例のパーキング装置３２０を示す構成図である。
　図１５は、変形例のパーキング装置３２０を示す構成図である。
　図１６は、さらなる変形例のパーキング装置４２０を示す構成図である。 FIG. 1 is a configuration diagram showing an outline of a configuration of an electric motor unit 1 equipped with a parking device 20 as an embodiment of the present invention.
FIG. 2 is a configuration diagram showing an outline of the configuration of the parking apparatus 20.
FIG. 3 is an enlarged view in which the tip of the parking pole 26 is enlarged.
FIG. 4 is an enlarged view showing the distal end portion of the leaf spring 28 in an enlarged manner.
FIG. 5 is an arrow view of FIG. 4 viewed from the direction of arrow V.
FIG. 6 is a configuration diagram showing an outline of the configuration of the direct acting actuator 30.
FIG. 7 is a cross-sectional view showing the YY cross section of FIG.
FIG. 8 is a state diagram showing a state in which the parking lock is completed.
FIG. 9 is a state diagram showing a parking lock waiting state.
FIG. 10 is an enlarged view showing a state in which the protruding portion 80 is formed on the lower step surface 29 b ″ forming the step of the large step portion 29 b of the parking pole 26.
FIG. 11 is an arrow view when FIG. 10 is viewed from the direction of the arrow W.
FIG. 12 is an enlarged view showing a state in which the protruding portion 180 is formed on the leaf spring 28 in an enlarged manner.
FIG. 13 is an arrow view when FIG. 12 is viewed from the direction of the arrow X.
FIG. 14 is a configuration diagram showing a parking device 320 according to a modification.
FIG. 15 is a configuration diagram showing a parking device 320 according to a modification.
FIG. 16 is a configuration diagram showing a parking device 420 according to a further modification.
　次に、本発明を実施するための形態を実施例を用いて説明する。
　図１は、本発明の一実施形態としてのパーキング装置２０を搭載した電動機ユニット１の構成の概略を示す構成図であり、図２は、パーキング装置２０の構成の概略を示す構成図である。
　実施例の電動機ユニット１は、図１に示すように、主として電動機ＭＧと、電動機ＭＧのロータシャフト２に接続された減速装置４０と、リングギヤＲＧを介して減速装置４０に接続されたディファレンシャル装置５０と、減速装置４０の入力軸４２の回転を阻止可能な実施例のパーキング装置２０とを備える。
　電動機ＭＧは、ステータ４と、ロータシャフト２に取り付けられたロータ６とを備える。ステータ４は、コイル線を軟鋼等に巻回したものであり、外部からの電力供給を受けて磁界を刻々と変化させる。ロータ６は、ステータ４の磁界の変化に伴って回転し、この回転はロータシャフト２により取り出されて減速装置４０に伝達される。
　減速装置４０は、電動機ＭＧのロータシャフト２にスプライン嵌合されて同軸回転する入力軸４２と、ギヤ機構４４を介して入力軸４２に接続された出力軸４６とを備え、入力軸４２の回転数を減速して出力軸４６に伝達する。
　ギヤ機構４４は、入力軸４２上に一体形成された第１ギヤ４７と、この第１ギヤ４７と噛み合うとともに第１ギヤ４７よりも径が大きく、かつ、歯数も多い第２ギヤ４８とを備える歯車対である。第２ギヤ４８は、出力軸４６にスプライン圧入などによって固定されている。また、出力軸４６には、出力ギヤＯＧが一体形成されており、ディファレンシャル装置５０のリングギヤＲＧが噛み合っている。
　ディファレンシャル装置５０は、出力軸４６からの動力を左右の車軸５２，５４に伝達するとともに、左右の車軸５２，５４間の回転数の差を吸収可能な差動機構として構成されている。
　パーキング装置２０は、図１および図２に示すように、減速装置４０の入力軸４２にスプライン圧入などによって固定されたパーキングギヤ２２と、減速装置４０の入力軸４２と平行に配置されたポールシャフト２４に回転可能に支持されたパーキングポール２６と、ケース３から立設されパーキングポール２６の先端部と当接してパーキングポール２６の回動を規制するストッパーピン２３と、板バネ２８を介してパーキングポール２６に接続された直動式アクチュエータ３０とを備える。
　パーキングギヤ２２は、外周面に歯部が複数個形成された周知の駐車用の歯車として形成されている。パーキングギヤ２２の歯部は、外力を付加しなくてもパーキングポール２６との係合が解除され難いようにセルフロック可能な圧力角（例えば、９°以下）に形成されている。
　パーキングポール２６には、パーキングギヤ２２の歯部と噛み合い可能な係合爪２６ａが形成されており、ポールシャフト２４に挿通支持された巻きバネ２７によって係合爪２６ａがパーキングギヤ２２の歯部から離間する方向に付勢されている。
　また、パーキングポール２６の先端部のうちパーキングギヤ２２に対抗する側の面には、図２に示すように、段差が形成されており、この段差は、図３のパーキングポール２６の先端部を拡大した拡大図に示すように、係合爪２６ａの根元部２６ｂから少し先端側に向かった位置に形成された小段差部２９ａと、小段差部２９ａからさらに先端側に向かった位置に形成された大段差部２９ｂとから構成されている。小段差部２９ａと大段差部２９ｂとは連続して形成されており、大段差部２９ｂの段差をなす上段面２９ｂ’が小段差部２９ａの段差をなす下段面２９ｂ’となっている。大段差部２９ｂの段差をなす上段面２９ｂ’と大段差部２９ｂの段差をなす下段面２９ｂ’’とはほぼ平行であり、傾斜面２９ｃで接続されている。
　図４は、板バネ２８の先端部を拡大して示す拡大図であり、図５は、図４を矢印Ｖの方向から視た矢視図である。
　板バネ２８は、帯状のバネ鋼により形成されており、図３に示すように、一端がパーキングポール２６の大段差部２９ｂの段差をなす上段面２９ｂ’にボルトなどの締結部品により固定され、他端がパーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に対向した自由端となっている。
　板バネ２８の自由端をなす先端部は、図４に示すように二又に分かれており、図５に示すように円環状に曲げられた曲げ部２８ａとなっている。
　図６は、直動式アクチュエータ３０の構成の概略を示す構成図であり、図７は、図２のＹ−Ｙ断面を示す断面図である。
　直動式アクチュエータ３０は、図６に示すように、ステータ３２と、モータシャフト３４に取り付けられたロータ３６と、モータシャフト３４に対して回転可能かつ軸方向移動可能にモータシャフト３４内に挿通されたアクチュエータロッド３８とを備えており、これらはハウジング３９内に収納されている。
　また、直動式アクチュエータ３０は、図７に示すように、ハウジング３９の外周を取り囲むようにブラケットＢＲがボルト等の締結部品によりその両側（図７における左右方向）において固定されており、ブラケットＢＲの上下両端（図７における上下方向）から突出したピン部材Ｐｍによってケース４１ａ，４１ｂに回転可能に支持されている。
　即ち、直動式アクチュエータ３０は、図２に示すように、ピン部材Ｐｍが入力軸４２や出力軸４６，ポールシャフト２４などと同じ軸線方向となるようにブラケットＢＲを介してケース４１ａ，４１ｂに支持されており、第１ギヤ４７や第２ギヤ４８，パーキングギヤ２２などと同じ回転方向に回転可能である。
　モータシャフト３４は、中空軸として形成されており、内周面には雌ネジ３４ａが形成されている。アクチュエータロッド３８の外周面には、モータシャフト３４の雌ネジ３４ａと噛み合う雄ネジ３８ａが形成されており、モータシャフト３４の回転に伴い軸方向移動する。また、アクチュエータロッド３８の先端近傍には、図６に示すように、貫通孔３８ｂが形成されている。
　アクチュエータロッド３８は、図２，図４および図５に示すように、先端部が板バネ２８の二又間に配されて板バネ２８の一方の曲げ部２８ａから貫通孔３８ｂを介して他方の曲げ部２８ａまで嵌挿するピンＰによって板バネ２８に接続されている。このように、アクチュエータロッド３８をピンＰによって板バネ２８に回動可能に接続することによって、パーキングポール２６の回転に伴い生ずるアクチュエータロッド３８と板バネ２８との接続状態の変化に適正に対応することができる。
　なお、アクチュエータロッド３８が板バネ２８に接続されたときには、アクチュエータロッド３８の先端は、図３に示すように、パーキングポール２６の大段差部２９ｂの段差をなす下断面２９ｂ’’に接近した状態で対向している。
　また、アクチュエータロッド３８は、図２に示すように、パーキングポール２６に対して係合爪２６ａよりも先端側で板バネ２８を介して接続されるから、パーキングロックおよびパーキングロックの解除の際にパーキングポール２６を回転させるのに要する力が比較的小さくて済む。この結果、直動式アクチュエータ３０のコンパクト化が可能となる。
　次に、こうして構成された実施例のパーキング装置２０を備える電動機ユニット１の動作、特に、パーキングロックおよびパーキングロックの解除の際の動きについて説明する。
　まず、パーキングロックの際の動きについて説明する。
　図８は、パーキングロックが完了した状態を示す状態図であり、図９は、パーキングロックの待ち状態を示す状態図である。
　操作者によってシフトレバーがパーキングレンジに操作されると、パーキングポール２６の係合爪２６ａをパーキングギヤ２２に係合させることにより入力軸４２をロックするよう直動式アクチュエータ３０が駆動制御される。即ち、モータシャフト３４を回転することによって、板バネ２８を介してパーキングポール２６を直動式アクチュエータ３０側に引き付ける方向、即ち、パーキングポール２６が時計方向に回転する方向にアクチュエータロッド３８を軸方向移動させる。これにより、パーキングポール２６は、図８に示すように、ポールシャフト２４を支点に時計回りに回転し、係合爪２６ａがパーキングギヤ２２に係合してパーキングロックが完了する。
　ここで、パーキングギヤ２２の回転位置によっては、図８に示すように、パーキングポール２６の係合爪２６ａがパーキングギヤ２２の歯部と当接して、パーキングポール２６の回転が阻止され、パーキングロックが完了できない場合が発生する。しかしながら、アクチュエータロッド３８はパーキングポール２６を直動式アクチュエータ３０側に引き付ける方向に軸方向移動をし続け、板バネ２８を直動式アクチュエータ３０側に撓ませ、そのバネ力によってパーキングポール２６に時計方向の回転力を付勢した状態、即ち、パーキングロックの待ち状態を確立する。これにより、何らかの外力が作用して入力軸４２が回転して、パーキングギヤ２２がパーキングポール２６の係合爪２６ａと係合可能な位置まで回転すると、パーキングポール２６がバネ力によって時計方向に回転して係合爪２６ａがパーキングギヤ２２に係合してパーキングロックが完了する。
　なお、パーキングポール２６の回転に伴い、アクチュエータロッド３８には、図８や図９における反時計方向に回転させようとする力が生ずるが、直動式アクチュエータ３０がブラケットＢＲを介してケース４１ａ，４１ｂに回転可能に支持されているから、アクチュエータロッド３８の首振り挙動として、この力を吸収することができる。
　次に、パーキングロックの解除の際の動きについて説明する。
　操作者によってシフトレバーがパーキングレンジから別のレンジ（例えば、Ｄレンジなど）に操作されると、パーキングポール２６の係合爪２６ａとパーキングギヤ２２との係合を解除することにより入力軸４２のロックを解除するよう直動式アクチュエータ３０が駆動制御される。即ち、モータシャフト３４をパーキングロックの際とは逆回転することによって、パーキングポール２６を直動式アクチュエータ３０側から離れる方向、即ち、パーキングポール２６が反時計方向に回転する方向にアクチュエータロッド３８を軸方向移動させる。このとき、アクチュエータロッド３８の先端は、パーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に当接して、パーキングポール２６を直接回転する。こうして、パーキングポール２６の係合爪２６ａとパーキングギヤ２２との係合が速やかに解除されてパーキングロックの解除が完了する。
　以上説明した実施例のパーキング装置２０によれば、周知のパーキングポール２６の先端部に段差を形成し、この段差に一端が自由端となるように板バネ２８を取り付けるとともに、板バネ２８の自由端に直動式アクチュエータ３０のアクチュエータロッド３８を接続するだけだから、より簡易な構造でパーキングロックおよびパーキングロックの解除を行うことができる。
　また、実施例のパーキング装置２０によれば、アクチュエータロッド３８がピンＰによって板バネ２８に回動可能に接続されるから、パーキングポール２６の回転に伴い生ずるアクチュエータロッド３８と板バネ２８との接続状態の変化に適正に対応することができる。
　さらに、実施例のパーキング装置２０によれば、直動式アクチュエータ３０が第１ギヤ４７や第２ギヤ４８，パーキングギヤ２２などと同じ回転方向に回転可能なように、ブラケットＢＲを介してケース４１ａ，４１ｂに支持したから、パーキングロックの際にパーキングポール２６が回転するのに伴い、アクチュエータロッド３８に入力される回転方向（図８および図９における反時計方向）の力を、アクチュエータロッド３８の首振り挙動として吸収することができる。
　実施例のパーキング装置２０では、パーキングロックの解除の際には、アクチュエータロッド３８の先端をパーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に当接するものとしたが、板バネ２８をパーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に当接するものとしても構わない。
　この場合、アクチュエータロッド３８の先端がパーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に当接する前に板バネ２８がパーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に当接するよう、パーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に板バネ２８が当接可能な突起部を設けるものとしたり、これとは逆に、板バネ２８にパーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’と当接可能な突起部を設けるものとすれば良い。
　図１０は、パーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に突起部８０を形成した様子を拡大して示す拡大図であり、図１１は、図１０を矢印Ｗの方向から視た矢視図である。
　図１０および図１１に示すように、パーキングポール２６の先端部のうち大段差部２９ｂの段差をなす下段面２９ｂ’’（板バネ２８の曲げ部２８ａに対向する部分）には、板バネ２８側に向かって突出する突起部８０，８０が形成されている。曲げ部２８ａと突起部８０，８０との距離は、アクチュエータロッド３８の先端と下段面２９ｂ’’との距離よりも小さければ良く、接触していても構わない。また、突起部８０，８０を形成する代わりに、大段差部２９ｂの段差をなす下段面２９ｂ’’のうちアクチュエータロッド３８の先端に対向する面を凹ませるものとしても構わない。
　図１２は、板バネ２８に突起部１８０を形成した様子を拡大して示す拡大図であり、図１３は、図１２を矢印Ｘの方向から視た矢視図である。
　図１２および図１３に示すように、板バネ２８の曲げ部２８ａのうちパーキングポール２６の大段差部２９ｂの段差をなす下段面２９ｂ’’に対向する側には、下段面２９ｂ’’に向かって突出する突起部１８０，１８０が形成されている。突起部１８０，１８０と下段面２９ｂ’’との距離は、アクチュエータロッド３８の先端と下段面２９ｂ’’との距離よりも小さければ良く、接触していても構わない。
　実施例のパーキング装置２０では、アクチュエータロッド３８は、板バネ２８に回転可能に接続するものとしたが、アクチュエータロッド３８は、例えば溶接等により板バネ２８に回転不能に接続するものとしても差し支えない。
　実施例のパーキング装置２０では、直動式アクチュエータ３０は、ブラケットＢＲを介してケース４１ａ，４１ｂに回転可能に支持するものしたが、直動式アクチュエータ３０は、ケース４１ａ，４１ｂに回転不能に支持するものしても差し支えない。
　実施例のパーキング装置２０では、アクチュエータロッド３８とパーキングポール２６とは、板バネ２８によって接続するものとしたが、アクチュエータロッド３８とパーキングポール２６とは、図１４および図１５に例示する変形例のパーキング装置３２０に示すように、コイルスプリングによって接続するものとしても構わない。
　変形例のパーキング装置３２０では、図１４および図１５に示すように、アクチュエータロッド３３８が、その先端に取り付けられた接続ブラケット３７０内にパーキングポール３２６の先端を挿通し、接続ブラケット３７０内でコイルスプリング３２８によってアクチュエータロッド３３８とパーキングポール３２６とが互いに接続されている。
　接続ブラケット３７０の挿通孔３７２は、図１５に示すように、球面状に形成されている。
　こうして構成された変形例のパーキング装置３２０においても、実施例のパーキング装置２０と同様、直動式アクチュエータ３３０を駆動してアクチュエータロッド３３８を引き込み側（図１５における左方向）に軸方向移動させることによって、コイルスプリング３２８を介してパーキングポール３２６を回転するから、パーキングロックの待ち状態を可能としながら、係合爪３２６ａとパーキングギヤ２２とを係合してパーキングロックを行うことができる。
　また、パーキングロックの状態からアクチュエータロッド３３８を押し出し側（図１５における右方向）に軸方向移動させることによって、接続ブラケット３７０の挿通孔３７２の球面がパーキングポール３２６に当接してパーキングポール３２６を直接回転するから、速やかにパーキングロックの解除を行うことができる。
　なお、接続ブラケット３７０の挿通孔３７２を球面状に形成しているから、パーキングポール３２６の回転に伴い生ずる接続ブラケット３７０とパーキングポール３２６との接続状態の変化にも適正に対応することができ、作動性の低下を防止することができる。
　また、レイアウトによっては、図１６に例示する更なる変形例のパーキング装置４２０のように、アクチュエータロッド４３８を押し出し側（図１６における右方向）に軸方向移動させることによって、係合爪４２６ａとパーキングギヤ２２とを係合してパーキングロックを行なうとともに、パーキングロックの状態からアクチュエータロッド４３８を引き込み側（図１６における左方向）に軸方向移動させることによって、接続ブラケット４７０の挿通孔４７２の球面をパーキングポール４２６に当接し、パーキングポール４２６を直接回転してパーキングロックの解除を行うものとしても良い。
　以上、本発明の実施の形態について実施例を用いて説明したが、本発明はこうした実施例に限定されるものではなく、本発明の要旨を逸脱しない範囲内において、種々なる形態で実施し得ることは勿論である。 Next, the form for implementing this invention is demonstrated using an Example.
FIG. 1 is a configuration diagram showing an outline of the configuration of an electric motor unit 1 equipped with a parking device 20 as an embodiment of the present invention, and FIG. 2 is a configuration diagram showing an outline of the configuration of the parking device 20.
As shown in FIG. 1, the electric motor unit 1 of the embodiment mainly includes an electric motor MG, a reduction gear 40 connected to the rotor shaft 2 of the electric motor MG, and a differential device 50 connected to the reduction gear 40 via a ring gear RG. And the parking device 20 of the embodiment that can prevent the rotation of the input shaft 42 of the reduction gear 40.
The electric motor MG includes a stator 4 and a rotor 6 attached to the rotor shaft 2. The stator 4 is obtained by winding a coil wire around mild steel or the like, and receives a power supply from the outside to change the magnetic field every moment. The rotor 6 rotates as the magnetic field of the stator 4 changes, and this rotation is taken out by the rotor shaft 2 and transmitted to the speed reducer 40.
The reduction gear 40 includes an input shaft 42 that is spline-fitted to the rotor shaft 2 of the electric motor MG and rotates coaxially, and an output shaft 46 that is connected to the input shaft 42 via a gear mechanism 44, and rotates the input shaft 42. The number is decelerated and transmitted to the output shaft 46.
The gear mechanism 44 includes a first gear 47 integrally formed on the input shaft 42, and a second gear 48 that meshes with the first gear 47, has a diameter larger than that of the first gear 47, and has a larger number of teeth. A gear pair provided. The second gear 48 is fixed to the output shaft 46 by spline press fitting or the like. An output gear OG is integrally formed on the output shaft 46, and the ring gear RG of the differential device 50 is meshed.
The differential device 50 is configured as a differential mechanism capable of transmitting the power from the output shaft 46 to the left and right axles 52 and 54 and absorbing the difference in rotational speed between the left and right axles 52 and 54.
As shown in FIGS. 1 and 2, the parking device 20 includes a parking gear 22 fixed to the input shaft 42 of the speed reduction device 40 by spline press fitting or the like, and a pole shaft disposed in parallel with the input shaft 42 of the speed reduction device 40. Parking is carried out via a parking pole 26, which is rotatably supported by 24, a stopper pin 23 which stands upright from the case 3 and abuts against the tip of the parking pole 26 and restricts the rotation of the parking pole 26, and a leaf spring 28. A direct acting actuator 30 connected to the pole 26.
The parking gear 22 is formed as a well-known parking gear having a plurality of teeth on the outer peripheral surface. The tooth portion of the parking gear 22 is formed at a pressure angle (for example, 9 ° or less) that can be self-locked so that the engagement with the parking pole 26 is difficult to be released without applying an external force.
The parking pawl 26 is formed with an engaging claw 26 a that can mesh with a tooth portion of the parking gear 22, and the engaging claw 26 a is separated from the tooth portion of the parking gear 22 by a winding spring 27 inserted and supported by the pole shaft 24. It is biased in the direction of separation.
Further, as shown in FIG. 2, a step is formed on the surface of the front end of the parking pole 26 that faces the parking gear 22, and this step is different from the front end of the parking pole 26 in FIG. As shown in the enlarged enlarged view, a small step portion 29a is formed at a position slightly toward the distal end side from the root portion 26b of the engaging claw 26a, and is formed at a position further toward the distal end side from the small step portion 29a. And a large step portion 29b. The small step portion 29a and the large step portion 29b are formed continuously, and the upper step surface 29b ′ forming the step of the large step portion 29b is the lower step surface 29b ′ forming the step of the small step portion 29a. The upper step surface 29b ′ forming the step of the large step portion 29b and the lower step surface 29b ″ forming the step of the large step portion 29b are substantially parallel and connected by the inclined surface 29c.
FIG. 4 is an enlarged view showing the distal end portion of the leaf spring 28 in an enlarged manner, and FIG. 5 is an arrow view of FIG.
The leaf spring 28 is formed of a belt-shaped spring steel, and as shown in FIG. 3, one end is fixed to an upper step surface 29b ′ forming a step of the large step portion 29b of the parking pole 26 by a fastening part such as a bolt, The other end is a free end facing the lower step surface 29 b ″ forming the step of the large step portion 29 b of the parking pole 26.
As shown in FIG. 4, the tip portion that forms the free end of the leaf spring 28 is divided into two parts, and as shown in FIG. 5, a bent portion 28 a is bent into an annular shape.
6 is a block diagram showing an outline of the configuration of the direct acting actuator 30, and FIG. 7 is a cross-sectional view showing a YY cross section of FIG.
As shown in FIG. 6, the direct acting actuator 30 is inserted into the motor shaft 34 so as to be rotatable and axially movable with respect to the stator 32, the rotor 36 attached to the motor shaft 34, and the motor shaft 34. Actuator rods 38, which are housed in a housing 39.
In addition, as shown in FIG. 7, the bracket BR is fixed on both sides (left and right in FIG. 7) by fastening parts such as bolts so as to surround the outer periphery of the housing 39, as shown in FIG. Are supported rotatably on the cases 41a and 41b by pin members Pm protruding from both upper and lower ends (vertical direction in FIG. 7).
That is, as shown in FIG. 2, the linear actuator 30 is attached to the cases 41a and 41b via the bracket BR so that the pin member Pm is in the same axial direction as the input shaft 42, the output shaft 46, the pole shaft 24, and the like. The first gear 47, the second gear 48, the parking gear 22, and the like can be rotated in the same rotational direction.
The motor shaft 34 is formed as a hollow shaft, and an internal thread 34a is formed on the inner peripheral surface. A male screw 38 a that meshes with the female screw 34 a of the motor shaft 34 is formed on the outer peripheral surface of the actuator rod 38, and moves in the axial direction as the motor shaft 34 rotates. Further, as shown in FIG. 6, a through hole 38b is formed near the tip of the actuator rod 38.
2, 4 and 5, the actuator rod 38 is disposed between the two ends of the leaf spring 28, and the other end of the actuator rod 38 is bent from one bent portion 28a of the leaf spring 28 through the through hole 38b. It is connected to the leaf spring 28 by a pin P that is inserted up to the bent portion 28a. As described above, the actuator rod 38 is pivotally connected to the leaf spring 28 by the pin P, so that the change in the connection state between the actuator rod 38 and the leaf spring 28 caused by the rotation of the parking pole 26 can be appropriately handled. be able to.
When the actuator rod 38 is connected to the leaf spring 28, the tip of the actuator rod 38 is close to the lower cross section 29b '' forming the step of the large step portion 29b of the parking pole 26 as shown in FIG. Are facing each other.
Further, as shown in FIG. 2, the actuator rod 38 is connected to the parking pole 26 via the leaf spring 28 on the tip side of the engaging claw 26a, so that the parking lock and the parking lock are released. The force required to rotate the parking pole 26 can be relatively small. As a result, the direct acting actuator 30 can be made compact.
Next, the operation of the electric motor unit 1 including the parking device 20 of the embodiment configured as described above, in particular, the movement when the parking lock and the parking lock are released will be described.
First, the movement at the time of parking lock will be described.
FIG. 8 is a state diagram showing a state where the parking lock is completed, and FIG. 9 is a state diagram showing a parking lock waiting state.
When the shift lever is operated to the parking range by the operator, the direct acting actuator 30 is driven and controlled to lock the input shaft 42 by engaging the engaging claw 26 a of the parking pole 26 with the parking gear 22. That is, by rotating the motor shaft 34, the actuator rod 38 is axially moved in the direction in which the parking pole 26 is attracted to the linear actuator 30 via the leaf spring 28, that is, in the direction in which the parking pole 26 rotates clockwise. Move. As a result, the parking pole 26 rotates clockwise around the pole shaft 24 as shown in FIG. 8, and the engaging claw 26a engages with the parking gear 22 to complete the parking lock.
Here, depending on the rotational position of the parking gear 22, as shown in FIG. 8, the engaging pawl 26 a of the parking pole 26 comes into contact with the teeth of the parking gear 22 to prevent the parking pole 26 from rotating, and the parking lock May not be completed. However, the actuator rod 38 continues to move in the axial direction in the direction in which the parking pole 26 is attracted to the direct acting actuator 30 side, and the leaf spring 28 is bent toward the direct acting actuator 30 side. A state in which the rotational force in the direction is energized, that is, a waiting state for parking lock is established. As a result, when the input shaft 42 rotates due to some external force and the parking gear 22 rotates to a position where it can engage with the engaging pawl 26a of the parking pole 26, the parking pole 26 rotates clockwise by the spring force. Then, the engaging claw 26a engages with the parking gear 22, and the parking lock is completed.
Along with the rotation of the parking pole 26, a force is generated on the actuator rod 38 in a counterclockwise direction in FIGS. 8 and 9. However, the direct acting actuator 30 is connected to the case 41a, Since it is rotatably supported by 41b, this force can be absorbed as the swing behavior of the actuator rod 38.
Next, the movement when releasing the parking lock will be described.
When the shift lever is operated from the parking range to another range (for example, D range) by the operator, the engagement between the engagement pawl 26a of the parking pole 26 and the parking gear 22 is released, thereby The direct acting actuator 30 is driven and controlled to release the lock. That is, by rotating the motor shaft 34 in the reverse direction to the parking lock, the actuator rod 38 is moved away from the direct acting actuator 30 side, that is, in the direction in which the parking pole 26 rotates counterclockwise. Move in the axial direction. At this time, the tip of the actuator rod 38 comes into contact with the lower step surface 29 b ″ forming the step of the large step portion 29 b of the parking pole 26 and directly rotates the parking pole 26. Thus, the engagement between the engagement pawl 26a of the parking pole 26 and the parking gear 22 is quickly released, and the release of the parking lock is completed.
According to the parking device 20 of the embodiment described above, a step is formed at the tip of a known parking pole 26, and a leaf spring 28 is attached to the step so that one end is a free end. Since only the actuator rod 38 of the direct acting actuator 30 is connected to the end, the parking lock and the parking lock can be released with a simpler structure.
Further, according to the parking apparatus 20 of the embodiment, since the actuator rod 38 is rotatably connected to the leaf spring 28 by the pin P, the connection between the actuator rod 38 and the leaf spring 28 caused by the rotation of the parking pole 26 is achieved. It is possible to respond appropriately to changes in state.
Furthermore, according to the parking apparatus 20 of the embodiment, the case 41a is provided via the bracket BR so that the direct acting actuator 30 can rotate in the same rotational direction as the first gear 47, the second gear 48, the parking gear 22, and the like. , 41b, the rotation force (counterclockwise in FIGS. 8 and 9) input to the actuator rod 38 as the parking pole 26 rotates during the parking lock is applied to the actuator rod 38. It can be absorbed as a swinging behavior.
In the parking device 20 of the embodiment, when the parking lock is released, the tip of the actuator rod 38 is brought into contact with the lower step surface 29b '' forming the step of the large step portion 29b of the parking pole 26. 28 may be in contact with the lower step surface 29 b ″ forming the step of the large step portion 29 b of the parking pole 26.
In this case, before the tip of the actuator rod 38 contacts the lower step surface 29b '' forming the step of the large step portion 29b of the parking pole 26, the leaf spring 28 forms the step of the large step portion 29b of the parking pole 26. ”On the lower step surface 29 b” forming the step of the large step portion 29 b of the parking pole 26, or on the contrary, a protrusion that can contact the leaf spring 28 is provided. It is only necessary to provide a protrusion that can come into contact with the lower step surface 29 b ″ forming the step of the large step portion 29 b of the parking pole 26.
FIG. 10 is an enlarged view showing a state in which the protruding portion 80 is formed on the lower step surface 29b ″ forming the step of the large step portion 29b of the parking pole 26, and FIG. 11 shows FIG. 10 in the direction of the arrow W. FIG.
As shown in FIGS. 10 and 11, a leaf spring 28 is provided on a lower step surface 29 b ″ (a portion facing the bent portion 28 a of the leaf spring 28) forming the step of the large step portion 29 b in the tip portion of the parking pole 26. Protrusions 80 and 80 projecting toward the side are formed. The distance between the bent portion 28a and the projecting portions 80, 80 may be smaller than the distance between the tip of the actuator rod 38 and the lower step surface 29b '', and may be in contact with each other. Further, instead of forming the protrusions 80, 80, the lower step surface 29b '' forming the step of the large step portion 29b may be formed by denting the surface facing the tip of the actuator rod 38.
FIG. 12 is an enlarged view showing a state in which the protruding portion 180 is formed on the leaf spring 28, and FIG. 13 is an arrow view of FIG.
As shown in FIGS. 12 and 13, the side of the bent portion 28 a of the leaf spring 28 that faces the lower step surface 29 b ″ forming the step of the large step portion 29 b of the parking pole 26 faces the lower step surface 29 b ″. Protruding portions 180 and 180 are formed. The distance between the protrusions 180 and 180 and the lower step surface 29b ″ may be smaller than the distance between the tip of the actuator rod 38 and the lower step surface 29b ″, and they may be in contact with each other.
In the parking apparatus 20 of the embodiment, the actuator rod 38 is connected to the leaf spring 28 so as to be rotatable. However, the actuator rod 38 may be connected to the leaf spring 28 so as not to rotate, for example, by welding or the like. .
In the parking apparatus 20 of the embodiment, the direct acting actuator 30 is rotatably supported by the cases 41a and 41b via the bracket BR. However, the direct acting actuator 30 is non-rotatably supported by the cases 41a and 41b. You can do it.
In the parking apparatus 20 of the embodiment, the actuator rod 38 and the parking pole 26 are connected by the leaf spring 28. However, the actuator rod 38 and the parking pole 26 are modified examples illustrated in FIGS. 14 and 15. As shown in the parking device 320, it may be connected by a coil spring.
In the parking device 320 of the modified example, as shown in FIGS. 14 and 15, the actuator rod 338 inserts the tip of the parking pole 326 into the connection bracket 370 attached to the tip of the actuator rod 338, and the coil spring in the connection bracket 370. 328 connects the actuator rod 338 and the parking pole 326 to each other.
As shown in FIG. 15, the insertion hole 372 of the connection bracket 370 is formed in a spherical shape.
Also in the parking device 320 of the modified example configured as described above, the direct acting actuator 330 is driven to move the actuator rod 338 in the axial direction to the drawing side (left direction in FIG. 15), as in the parking device 20 of the embodiment. Thus, the parking pawl 326 is rotated via the coil spring 328. Therefore, the parking pawl 326a and the parking gear 22 can be engaged and the parking lock can be performed while enabling the parking lock waiting state.
Further, when the actuator rod 338 is axially moved to the pushing side (right direction in FIG. 15) from the parking lock state, the spherical surface of the insertion hole 372 of the connection bracket 370 comes into contact with the parking pole 326 so that the parking pole 326 is directly moved. Since it rotates, the parking lock can be quickly released.
In addition, since the insertion hole 372 of the connection bracket 370 is formed in a spherical shape, a change in the connection state between the connection bracket 370 and the parking pole 326 caused by the rotation of the parking pole 326 can be appropriately handled. A decrease in operability can be prevented.
Further, depending on the layout, like the parking device 420 of a further modified example illustrated in FIG. 16, the actuator rod 438 is moved in the axial direction to the pushing side (right direction in FIG. 16), whereby the engaging claw 426a and the parking pawl are parked. The gear 22 is engaged to perform the parking lock, and the actuator rod 438 is moved in the axial direction from the parking lock state to the drawing side (left direction in FIG. 16), whereby the spherical surface of the insertion hole 472 of the connection bracket 470 is changed. The parking lock 426 may be abutted and the parking pole 426 may be directly rotated to release the parking lock.
As mentioned above, although embodiment of this invention was described using the Example, this invention is not limited to such an Example, In the range which does not deviate from the summary of this invention, it can implement with a various form. Of course.

Claims (10)

  1. 　パーキングギヤにパーキングポールを係合してパーキングロックを行なうパーキング装置であって、
    　バネ部材を介して前記パーキングポールに接続されたロッドを有する直動式アクチュエータを備え、
    　該直動式アクチュエータは、前記ロッドを軸方向であって前記バネ部材の撓みが許容された方向である第１方向へ移動して前記バネ部材を介して前記パーキングポールを回動することによって前記パーキングポールを前記パーキングギヤへ係合し、前記ロッドを前記第１方向とは逆方向であって前記バネ部材の撓みが規制された方向である第２方向に移動して前記ロッドまたは前記バネ部材を前記パーキングポールに当接させて該パーキングポールを回動することによって前記パーキングポールの前記パーキングギヤに対する係合を解除する
    　パーキング装置。     A parking device that engages a parking pole with a parking gear to perform a parking lock,
    A linear motion actuator having a rod connected to the parking pole via a spring member;
    The linear motion actuator moves the rod in the first direction, which is an axial direction in which the spring member is allowed to bend, and rotates the parking pole via the spring member. A parking pole is engaged with the parking gear, and the rod or the spring member is moved in a second direction which is a direction opposite to the first direction and in which the bending of the spring member is restricted. A parking device that releases the engagement of the parking pole with respect to the parking gear by rotating the parking pole while abutting the parking pole.
  2. 　前記バネ部材は、板バネを有する請求項１記載のパーキング装置。 The parking device according to claim 1, wherein the spring member includes a leaf spring.
  3. 　前記板バネは、一端が自由端となるよう他端を前記パーキングポールに固定されてなり、
    　前記ロッドは、前記自由端に接続されるとともに前記第２方向に移動する際に所定箇所が前記パーキングポールに当接するよう形成されてなる請求項２記載のパーキング装置。     The leaf spring is fixed at the other end to the parking pole so that one end is a free end,
    The parking device according to claim 2, wherein the rod is connected to the free end and is formed so that a predetermined portion abuts on the parking pole when moving in the second direction.
  4. 　前記パーキングポールは、表面に段差を有し、
    　前記板バネは、前記自由端が前記段差をなす下段面に対向して配置されるよう前記他端を前記段差をなす上段面に固定されてなり、
    　前記ロッドは、先端部が前記下段面と当接可能なように前記自由端に接続されてなる請求項２または３記載のパーキング装置。     The parking pole has a step on the surface,
    The leaf spring is configured such that the other end is fixed to the upper step surface forming the step so that the free end is disposed to face the lower step surface forming the step.
    The parking device according to claim 2 or 3, wherein the rod is connected to the free end so that a tip end portion thereof can come into contact with the lower surface.
  5. 　前記板バネは、一端が自由端となるよう他端を前記パーキングポールに固定されてなり、
    　前記ロッドは、前記自由端に接続されてなり、
    　前記自由端は、前記ロッドが前記第２方向へ移動する際に前記パーキングポールの所定箇所に当接して撓みが規制されてなる請求項２記載のパーキング装置。     The leaf spring is fixed at the other end to the parking pole so that one end is a free end,
    The rod is connected to the free end;
    The parking device according to claim 2, wherein the free end is in contact with a predetermined portion of the parking pole when the rod moves in the second direction, and the bending is restricted.
  6. 　前記パーキングポールは、表面に段差を有し、
    　前記板バネは、前記自由端が前記段差をなす下段面に対向して配置されるよう前記他端を前記段差をなす上段面に固定されてなり、
    　前記自由端は、前記下段面に当接することにより撓みが規制されてなる請求項５記載のパーキング装置。     The parking pole has a step on the surface,
    The leaf spring is configured such that the other end is fixed to the upper step surface forming the step so that the free end is disposed to face the lower step surface forming the step.
    The parking apparatus according to claim 5, wherein the free end is bent by contacting the lower surface.
  7. 　前記ロッドは、前記板バネに対して回転可能に接続されてなる請求項２ないし６いずれか記載のパーキング装置。 The parking device according to any one of claims 2 to 6, wherein the rod is rotatably connected to the leaf spring.
  8. 　請求項１ないし７いずれか記載のパーキング装置を収容可能な筐体を備え、
    　前記直動式アクチュエータは、前記パーキングポールの回動に連動して回転可能なように前記筐体に支持されてなるパーキング装置。     A housing capable of accommodating the parking device according to any one of claims 1 to 7,
    The linear motion actuator is a parking device supported by the casing so as to be rotatable in conjunction with the rotation of the parking pole.
  9. 　前記パーキングギヤは、歯部がセルフロック可能な圧力角に形成されてなる請求項１ないし８いずれか記載のパーキング装置。 The parking device according to any one of claims 1 to 8, wherein the parking gear is formed at a pressure angle at which a tooth portion can self-lock.
  10. 　ロータシャフトと該ロータシャフトと一体回転するロータとを有する電動機と、前記ロータシャフトに接続された第１軸と該第１軸にギヤ機構を介して接続された第２軸とを有する減速機と、を含む電動機ユニットであって、
    　前記第１軸または前記第２軸に前記パーキングギヤを固定して、請求項１ないし９いずれか記載のパーキング装置により前記電動機ユニットのパーキングロックまたはパーキングロックの解除を行なう
    　電動機ユニット。     An electric motor having a rotor shaft and a rotor that rotates integrally with the rotor shaft; a speed reducer having a first shaft connected to the rotor shaft and a second shaft connected to the first shaft via a gear mechanism; An electric motor unit including
    An electric motor unit that fixes the parking gear to the first shaft or the second shaft and releases the parking lock or the parking lock of the electric motor unit by the parking device according to claim 1.
PCT/JP2010/055156 2009-07-14 2010-03-17 Parking device and electric motor unit equipped with the same WO2011007602A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013106303A1 (en) * 2013-06-18 2014-12-18 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Parking lock arrangement and motor vehicle transmission
KR101734274B1 (en) 2011-10-05 2017-05-12 현대자동차 주식회사 Parking system for vehicle
KR20180075978A (en) * 2016-12-27 2018-07-05 현대 파워텍 주식회사 Parking system for vehicle and parking rod assembly thereof
US11300193B2 (en) 2018-06-12 2022-04-12 Jing-Jin Electric Technologies Co., Ltd. Integrated electric drive power assembly

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KR101734274B1 (en) 2011-10-05 2017-05-12 현대자동차 주식회사 Parking system for vehicle
DE102013106303A1 (en) * 2013-06-18 2014-12-18 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Parking lock arrangement and motor vehicle transmission
KR20180075978A (en) * 2016-12-27 2018-07-05 현대 파워텍 주식회사 Parking system for vehicle and parking rod assembly thereof
KR101959015B1 (en) 2016-12-27 2019-03-18 현대트랜시스 주식회사 Parking system for vehicle and parking rod assembly thereof
US11300193B2 (en) 2018-06-12 2022-04-12 Jing-Jin Electric Technologies Co., Ltd. Integrated electric drive power assembly

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