JP3206674U - Parking device and power transmission device including the same - Google Patents

Abstract

To provide a technique that contributes to the realization of space saving in the radial direction of a parking gear. A parking rod including a cam member is brought into contact with a parking pole arranged radially outward of a parking gear PG from an axial direction (axial direction of an input shaft 2) to The parking gear PG is engaged and disengaged by swinging in the axial direction. Thereby, the parking pole 22 is only disposed outside the parking gear PG in the radial direction, and space saving in the radial direction of the parking gear PG can be realized. [Selection] Figure 4

Description

  The present invention relates to a parking apparatus that realizes a parking state by restricting rotation of a rotating shaft, and a power transmission apparatus including the parking apparatus.

  In JP2013-60107A (Patent Document 1), a parking gear fixed to an output shaft and a radially outer side of the parking gear are supported so as to be swingable in the radial direction of the parking gear. A parking device is described that includes a parking pole and a parking rod that has a cam disposed on the opposite side of the parking gear across the parking pole so as to swing the parking pole. In the parking device, by rotating the parking pole so that the engaging pawl of the parking pole engages with the parking gear, the rotation of the output shaft is restricted and the parking state is achieved, and the parking pole is engaged. By swinging the parking pole so that the engagement between the pawl and the parking gear is released, the rotation restriction of the output shaft is released and the parking state is released.

JP 2013-60107 A

  However, since the parking device described above is configured such that the parking pole and the parking rod are arranged radially outward of the parking gear, a large space is required in the radial direction, and there is still room for improvement in terms of space saving. There is.

  The present invention has been made in view of the above, and an object thereof is to provide a technique that contributes to the realization of space saving in the radial direction of the parking gear.

  The parking device of the present invention employs the following means in order to achieve the above-described object.

  According to the preferred embodiment of the parking device according to the present invention, the parking device is configured that realizes the parking state by restricting the rotation of the rotating shaft. The parking apparatus includes a parking gear, an engagement member, a support member, and a drive member. The parking gear has a plurality of teeth on the outer peripheral surface and is fixed to the rotating shaft. The engaging member has engaging teeth that can be engaged with the teeth of the parking gear and is disposed radially outward of the parking gear. The support member is configured to support the engagement member so that the engagement member can swing in the axial direction of the rotation shaft. The drive member is configured to abut against the engagement member from the axial direction so that the engagement member can swing in the axial direction.

  Here, in the present invention, “supporting the engaging member so that the engaging member can swing in the axial direction of the rotating shaft” means that the engaging tooth of the engaging member is relative to the tooth portion of the parking gear. The engagement member can be swung with the support member as a fulcrum so that the engagement tooth is engaged with the tooth portion in the direction of the tooth trace of the tooth portion, and the engagement tooth is released from the tooth portion in the direction of the tooth trace. , Ie, a mode in which the engaging tooth supports the engaging member such that the engaging tooth performs a reciprocating circular arc motion with the supporting member as a fulcrum.

  According to the present invention, the engagement member is only disposed on the outer side in the radial direction of the parking gear, and the engagement member is supported so as to be swingable in the axial direction of the rotation shaft, that is, the engagement member. The engaging member of the parking gear is engaged with the tooth portion from the tooth trace direction of the tooth portion of the parking gear, and the support member is supported as a fulcrum so that the engagement between the engagement tooth and the tooth portion is released in the tooth trace direction. Since the engagement member is swingably supported, space saving in the radial direction of the parking gear can be realized.

  According to the further form of the parking apparatus which concerns on this invention, the 1st chamfer surface is formed in the edge part of the side which opposes an engagement tooth among the both ends of the tooth trace direction of the tooth | gear part of a parking gear. . And the 2nd chamfer surface which can contact | abut to the said 1st chamfer surface is formed in the edge part on the side which opposes a 1st chamfer surface among the edge parts of the tooth trace direction of an engagement tooth.

  According to this aspect, since the engaging teeth can be engaged with the tooth portions via the contact between the first and second chamfer surfaces, the engaging teeth and the tooth portions can be smoothly engaged. .

  According to the further form of the parking apparatus which concerns on this invention, the supporting member is comprised so that an engaging member may be clamped from the plate | board thickness direction both sides of the said engaging member. The engagement member is configured to have engagement teeth on one side with the support member interposed therebetween, and has an abutting portion on which the drive member can contact on the other side with the support member interposed therebetween. It is configured.

  According to this form, the structure which rocks | engages an engaging member to the axial direction of a rotating shaft can be ensured simply. In addition, since the engagement tooth is provided on one side and the contact portion is provided on the other side with the support member interposed therebetween, the engagement member can be simplified.

  According to the further form of the parking apparatus which concerns on this invention, the supporting member has a control part which controls that an engaging member moves to the width direction of the said engaging member.

  According to this embodiment, since the movement of the engagement member in the width direction can be restricted at the swinging fulcrum by the support member, the displacement of the engagement member in the width direction can be suppressed, and the engagement tooth and the tooth portion can be securely connected. And it can be engaged stably. As a result, a stable parking state can be realized.

  According to the preferable form of the power transmission device according to the present invention, the power transmission device includes a case member, a rotating shaft configured to be rotatable on the case member, and the parking device according to any aspect of the present invention. . And it is comprised so that a parking state may be implement | achieved by regulating rotation of a rotating shaft with the said parking apparatus.

  According to the present invention, since the parking device according to the present invention of any one of the aspects described above is provided, the effect achieved by the parking device according to the present invention, for example, space saving in the radial direction of the parking gear is realized. And the like. As a result, the power transmission device itself can be made compact.

  According to the further form of the power transmission device which concerns on this invention, the case member has the 1st case member and the 2nd case member fastened by the said 1st case member. The rotating shaft is configured such that one end portion in the axial direction is supported by the first case member and the other end portion in the axial direction is supported by the second case member. Furthermore, the support member has a first support member supported by the first case member and a second support member supported by the second case member. The engaging member is configured to be supported by the case member so as to be swingable in the axial direction by being sandwiched from both sides of the engaging member in the plate thickness direction by the first supporting member and the second supporting member. .

  According to this embodiment, it is possible to easily ensure a configuration that supports the engaging member so as to be swingable in the axial direction of the rotating member.

  According to the further form of the power transmission device according to the present invention, the first or second case member has an extension extending toward the second or first case member so as to sandwich both sides in the width direction of the engagement member. A protruding piece is provided.

  According to this embodiment, the displacement in the width direction of the engaging member can be regulated with a simple configuration.

  According to the further form of the power transmission device which concerns on this invention, the support part comprised so that the 2nd or 1st case member might support the extension piece part was provided.

  According to this embodiment, it is possible to more reliably and more stably perform the width direction displacement regulation of the engaging member by the extending piece portion.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which can contribute to realization of space saving regarding the radial direction of a parking gear can be provided.

It is a schematic block diagram which shows the outline of a structure of the reduction gear 1 provided with the parking apparatus 20 which concerns on embodiment of this invention. It is explanatory drawing which shows a mode that the reduction gear 1 of the state which removed the case main-body part 8b was seen from the arrow V direction of FIG. It is a principal part enlarged view which expands and shows the W section of FIG. It is a schematic block diagram which shows the outline of a structure of the parking apparatus 20 which concerns on embodiment of this invention. 2 is a schematic configuration diagram showing an outline of a configuration of a parking pole 22. FIG. It is sectional drawing which shows the XX cross section of FIG. It is sectional drawing which shows the YY cross section of FIG.

  Next, the best mode for carrying out the present invention will be described with reference to examples.

  As shown in FIG. 1, a reduction gear 1 including a parking device 20 according to the present embodiment includes a power source, for example, an input shaft 2 connected to a rotation shaft (not shown) such as a motor M, and a reduction gear mechanism. The output shaft 4 connected to the input shaft 2 through the RGM, the differential device 6 connected to the output shaft 4 through the output gear mechanism OGM, the parking device 20 according to the present embodiment, and the like And a reduction gear case 8 that performs the above operation. The reduction gear 1 is an example of the implementation structure corresponding to the "power transmission device" in this invention.

  As shown in FIG. 1, a drive gear G and a parking gear PG, which will be described later, are integrally formed on the input shaft 2, and are rotatably supported by the speed reducer case 8 via bearings B1 and B1. ing. The driving gear G and the parking gear PG are arranged on the input shaft 2 in the order of the parking gear PG and the driving gear G from the side of the input shaft 2 connected to the rotating shaft (not shown) of the motor M (right side in FIG. 1). Has been. In the present embodiment, the input shaft 2 is an example of an actual configuration corresponding to the “rotary shaft” in the present invention.

  As shown in FIG. 1, the output shaft 4 is disposed in parallel to the input shaft 2. The output shaft 4 is rotatably supported by the speed reducer case 8 via bearings B2 and B2. A driven gear G ′ configured to mesh with the drive gear G is fixed to the output shaft 4, and an output gear OG is integrally formed. The driven gear G ′ and the output gear OG are arranged on the output shaft 4 in the order of the output gear OG and the driven gear G ′ from the right side in FIG. The driven gear G 'is fixed to the output shaft 4 so that it can rotate integrally with the output shaft 4 by spline fitting or the like.

  The driven gear G 'is configured to have an outer diameter larger than that of the driving gear G and to increase the number of teeth. That is, the driven gear G ′ is configured to reduce the rotational speed of the input shaft 2 and transmit it to the output shaft 4. A reduction gear mechanism RGM is configured by the drive gear G and the driven gear G ′.

  As shown in FIG. 1, the differential device 6 is configured to distribute and transmit power while absorbing a speed difference (rotational speed difference) generated between the left and right axles 9 and 9. The differential device 6 has a ring gear RG configured to mesh with the output gear OG, and is rotatably supported by the speed reducer case 8 via differential side bearings B3 and B3. The ring gear RG is configured to have a larger outer diameter and a larger number of teeth than the output gear OG. That is, the rotational speed of the output shaft 4 is decelerated and transmitted to the axles 9 and 9. An output gear mechanism OGM is configured by the output gear OG and the ring gear RG.

  As shown in FIG. 1 and FIG. 3, the parking device 20 swings the parking gear PG integrally formed with the input shaft 2, the parking pawl 22 that can be engaged with the parking gear PG, and the parking pawl 22. And a rocking mechanism 24. The parking pole 22 is an example of an implementation configuration corresponding to the “engaging member” in the present invention.

  As shown in FIGS. 2 and 4, the parking gear PG has a plurality of teeth 30 on the outer periphery. As shown in FIGS. 2 and 4, a chamfer surface C <b> 1 is formed at one end of the tooth portion 30 in the tooth trace direction (the axial direction of the input shaft 2). The chamfer surface C1 is an example of an implementation configuration corresponding to the “first chamfer surface” in the present invention.

  As shown in FIG. 5, the parking pole 22 includes a substantially plate-shaped main body portion 42 and a tooth portion 44 that is integrally formed at one end portion in the longitudinal direction of the main body portion 42 (left-right direction in FIG. 5). As shown in FIGS. 3 and 4, the parking gear PG is disposed radially outward. A spherical recess 42a and a groove 42b are formed on one main surface of the main body 42, and a circular recess 42c and a groove 42d are formed on the other main surface. The main surface is defined as a surface having a larger area than other surfaces among the surfaces constituting the main body portion 42. The tooth | gear part 44 is an example of the implementation structure corresponding to the "engagement tooth" in this invention.

  The spherical concave portion 42a is provided closer to the other end portion in the longitudinal direction of the main body portion 42 (on the left side in FIG. 5, the side opposite to the side where the tooth portion 44 is provided). A through hole 42e penetrating in the direction (vertical direction in the side view of FIG. 5) is formed. The spherical recess 42a is an example of an implementation configuration corresponding to the “contact portion” in the present invention.

  As shown in FIG. 5, the concave groove 42 b is formed over the entire region in the width direction of the main body portion 42 (vertical direction in the plan view of FIG. 5). That is, the concave groove 42b is formed so as to penetrate from the one end surface in the width direction of the main body portion 42 to the other end surface in the width direction. The concave groove 42b is formed at a position that is substantially the center of the main body 42 in the longitudinal direction (left-right direction in FIG. 5). On the other hand, the concave groove 42d is formed in a bag path shape. That is, the concave groove 42d is formed so as not to penetrate from the one end surface in the width direction to the other end surface in the width direction. The concave groove 42d is formed at a position that is substantially the same as the position where the concave groove 42b is formed, that is, a position that is substantially the center in the longitudinal direction of the main body 42 (the left-right direction in FIG. 5). The concave groove 42d is an example of an implementation configuration corresponding to the “regulator” in the present invention.

  As shown in FIG. 5, the circular recess 42c and the through hole 42e are formed to be substantially concentric with the spherical recess 42a. The through hole 42e is formed to have an inner diameter slightly larger than an outer diameter of a parking rod 56 described later.

  As shown in FIG. 5, a chamfer surface C2 is formed at one end of the tooth portion 44 in the tooth trace direction (vertical direction in the side view of FIG. 5). The chamfer surface C2 is an example of an implementation configuration corresponding to the “second chamfer surface” in the present invention.

  As shown in FIGS. 3, 4, and 7, the parking pole 22 thus configured is supported by a pair of support plates 62 and 64 so as to be swingable with respect to the speed reducer case 8. More specifically, as shown in FIGS. 4 and 7, the support plate 62 is engaged with the concave groove 42b and the support plate 64 is engaged with the concave groove 42d. It is sandwiched between the support plates 62 and 64 and is supported by the speed reducer case 8 in a state where the pair of support plates 62 and 64 can swing around the fulcrum. The pair of support plates 62 and 64 is an example of an implementation configuration corresponding to the “support member” in the present invention.

  As shown in FIG. 7, the support plate 62 is formed in a substantially inverted U shape in a front view including a main body portion 62 a and a pair of extending piece portions 62 b and 62 b extending from the main body portion 62 a. . The inner dimension between the pair of extended piece parts 62b, 62b is set to be slightly larger than the dimension in the width direction of the parking pole 22 (the left-right direction in FIG. 7). That is, a part of the width direction both end surfaces of the parking pole 22 is clamped by a pair of extension piece part 62b, 62b.

  As shown in FIGS. 4 and 6, the swing mechanism 24 includes an actuator ACTR (described only in FIG. 6), a manual rod 52 connected to the actuator ACTR, and a manual plate 54 fixed to the manual rod 52. And a parking rod 56 connected to the manual plate 54. As shown in FIG. 2, the swing mechanism 24 is arranged such that the manual rod 52 is in a torsional position with respect to the input shaft 2 and the output shaft 4, whereby the parking rod 56 is connected to the input shaft 2. And it arrange | positions so that it may become substantially parallel to the output shaft 4 (refer FIG. 3 and FIG. 4).

  As shown in FIGS. 4 and 6, the manual plate 54 is configured as an elliptical plate member, and a manual rod 52 is integrally connected to a position closer to one side in the elliptical long axis direction. A parking rod 56 is rotatably connected to a position near the other end in the direction. Thus, when the manual rod 52 is rotated by the actuator ACTR and the manual plate 54 is rotated, the parking rod 56 is reciprocated linearly in the axial direction. A detent spring DS is engaged with a notch formed on the outer peripheral surface of the manual plate 54.

  As shown in FIGS. 4 and 6, a cam member 57 is provided on the parking rod 56 so as to be slidable with respect to the parking rod 56. The cam member 57 is biased in the axial direction of the parking rod 56 by a cam spring 57a. The parking rod 56 and the cam member 57 are an example of an implementation configuration corresponding to the “drive member” in the present invention.

  As shown in FIGS. 4 and 6, the parking rod 56 is inserted into the through hole 42 e of the parking pole 22 that is supported by the pair of support plates 62 and 64 so as to be swingable with respect to the speed reducer case 8. At this time, the cam member 57 is brought into contact with the spherical recess 42 a of the parking pole 22. That is, the parking rod 56 including the cam member 57 is configured to abut against the parking pole 22 from the axial direction (the axial direction of the input shaft 2 and the output shaft 4) as shown in FIGS. ing. Note that one end of a return spring RS supported by the speed reducer case 8 is brought into contact with the circular recess 42 c of the parking pole 22. Accordingly, the parking pole 22 is swung around the pair of support plates 62 and 64 as the parking rod 56 reciprocates linearly.

  As shown in FIG. 1, the speed reducer case 8 includes a housing portion 8a and a case main body portion 8b connected to the housing portion 8a. By fastening the housing portion 8a and the case main body portion 8b, at least a part of the input shaft 2, the output shaft 4, the differential device 6, and the parking device 20 is accommodated inside the reduction gear case 8.

  As shown in FIG. 4, the housing portion 8a is provided with a boss portion 72 for attaching and supporting the support plate 64 and a boss portion 74 for guiding and supporting the return spring RS. As shown in FIG. 7, the boss portion 72 has a fitting recess 72 a in which the support plate 64 is fitted, and a fitting recess 72 b in which the pair of extending pieces 62 b and 62 b of the support plate 62 are fitted. , Is formed. In addition, as shown in FIGS. 4 and 6, the boss portion 74 is formed with an accommodation recess 74 a in which the return spring RS is accommodated. The fitting recess 72b is an example of an implementation configuration corresponding to the “support portion” in the present invention.

  As shown in FIGS. 4 and 7, the case main body portion 8 b is provided with a boss portion 82 for attaching and supporting the support plate 62. The boss portion 82 is formed with a fitting recess 82a into which the support plate 62 (specifically, the main body portion 62a) is fitted.

  Next, the operation of the speed reducer 1 configured as described above, in particular, the parking operation by the parking device 20 will be described. When the driver of the vehicle on which the speed reducer 1 is mounted performs a parking operation with the operation lever, the actuator ACTR is activated and the manual rod 52 is rotated in the direction of the arrow shown in FIG. When the manual rod 52 is rotated in the direction of the arrow shown in FIG. 4, the manual plate 54 integrated with the manual rod 52 rotates in the same direction as the rotation direction of the manual rod 52. It is linearly moved downward (downward in the axial direction) in FIG.

  As a result, the parking pole 22 swings in the direction of the arrow in FIG. 4 with the support plates 62 and 64 as fulcrums, and the teeth 44 engage with the teeth 30 of the parking gear PG. At this time, since the chamfer surface C2 and the chamfer surface C1 are formed on the mutually opposing surfaces of the tooth portion 44 of the parking pole 22 and the tooth portion 30 of the parking gear PG, the tooth portion 44 of the parking pole 22 and the parking gear PG. The teeth 30 can be smoothly engaged with each other.

  It should be noted that one support plate 64 that supports the parking pole 22 is engaged with the recessed groove-shaped groove 42d, and that part of both ends of the parking pole 22 in the width direction is a pair of the other support plate 62. By being pinched by the extended piece portions 62b and 62b, the parking pole 22 does not cause a lateral shift in the width direction, and a stable swinging property is ensured. Thus, the rotation of the input shaft 2 is restricted by the parking pole 22 meshing with the parking gear PG. Thereby, the rotation of the axles 9 and 9 is restricted, and the parking state is established.

  On the other hand, when the driver performs the parking release operation with the operation lever, the actuator ACTR is activated to rotate the manual rod 52 in the direction opposite to the arrow direction shown in FIG. When the manual rod 52 is rotated in the direction opposite to the arrow direction shown in FIG. 4, the manual plate 54 integrated with the manual rod 52 rotates in the same direction as the rotation direction of the manual rod 52. The parking rod 56 is linearly moved upward (upward in the axial direction) in FIG.

  At this time, since the spring force of the return spring RS acts on the parking pole 22, the parking pole 22 is moved by the spring force of the return spring RS as the parking rod 56 moves upward (upward in FIG. 4). Swings in the direction opposite to that during parking operation with the support plates 62 and 64 as fulcrums. As a result, the engagement of the teeth 44 of the parking pole 22 with the teeth 30 of the parking gear PG is released. In this way, the rotation restriction of the input shaft 2 is released by releasing the engagement of the parking pole 22 with the parking gear PG. Thereby, the rotation restriction of the axles 9 and 9 is released, and the parking state is released.

  According to the parking apparatus 20 according to the embodiment of the present invention described above, the parking rod 56 including the cam member 57 is moved in the axial direction (the input shaft 2) with respect to the parking pole 22 arranged radially outward of the parking gear PG. And the parking pole PG is engaged with and released from the parking gear PG by swinging the parking pole 22 in the axial direction. Since only the parking pole 22 is disposed outside, space saving in the radial direction of the parking gear PG can be realized.

  Further, according to the parking device 20 according to the embodiment of the present invention, since the parking pole 22 and the parking gear PG are engaged via the chamfer surfaces C1 and C2, the parking pole 22 and the parking gear PG Can be smoothly engaged.

  Furthermore, according to the parking device 20 according to the embodiment of the present invention, since the parking pole 22 is configured to be sandwiched between the pair of support plates 62 and 64 supported by the reduction gear case 8, the parking pole 22 is A configuration for swinging in the axial direction can be easily secured.

  In addition, according to the parking device 20 according to the embodiment of the present invention, the support plate 64 is configured to be engaged with the bag-like groove-like concave groove 42d of the parking pole 22, and at both end surfaces of the parking pole 22 in the width direction. Since a part of the support plate 62 is sandwiched between the pair of extending pieces 62b and 62b, the parking pole 22 can suppress lateral displacement in the width direction, and can ensure stable swingability. . Since the pair of extending piece portions 62b, 62b of the support plate 62 is configured to be fitted into the fitting recess 72b provided in the housing portion 8a, the parking pole 22 formed by the pair of extending piece portions 62b, 62b. It is possible to more reliably and more stably implement the lateral displacement regulation in the width direction.

  In the present embodiment, the rotating motion of the manual rod 52 by the actuator ACTR is converted into the linear motion of the parking rod 56 and the parking pole 22 is swung, but the present invention is not limited to this. For example, a configuration in which the rotation motion by the actuator ACTR is converted into a linear motion by a screw mechanism or the like to swing the parking pole 22 or a configuration in which the parking pole 22 is directly swinged by a stepping motor may be adopted.

  In the present embodiment, the parking pole 22 is sandwiched between the pair of support plates 62 and 64 to swing the parking pole 22 about the pair of support plates 62 and 64 as a fulcrum. However, the present invention is not limited to this. For example, a fulcrum shaft that penetrates the parking pole 22 in the width direction may be provided, and the parking pole 22 may be swung around the fulcrum shaft.

  In the present embodiment, the concave groove 42d of the parking pole 22 with which the support plate 64 engages is formed in a bag path shape. However, the concave groove 42d has the same configuration as the concave groove 42b, that is, the width of the parking pole 22 It is good also as a structure formed so that it may penetrate from the direction one end surface to the width direction other end surface.

  In this embodiment, the support plate 62 has a pair of extending piece portions 62b and 62b, but the pair of extending piece portions 62b and 62b may not be provided. In this case, it is preferable that the concave groove 42b of the parking pole 22 is formed in a bag path shape and the support plate 62 is engaged with the bag path-shaped groove groove 42b. According to the said structure, even if it does not have a pair of extension piece part 62b, 62b, the lateral shift of the parking pole 22 in the width direction can be suppressed.

  In the present embodiment, the pair of extending piece portions 62b and 62b of the support plate 62 are configured to be fitted into the fitting recess 72b of the housing portion 8a. It is good also as a structure which does not fit in this fitting recessed part 72b. According to the said structure, since it is not necessary to provide the boss | hub part 72 in the housing part 8a, the structure of the housing part 8a can be simplified.

  In the present embodiment, the input shaft 2 is provided with the parking gear PG to restrict the rotation of the input shaft 2. However, it is sufficient that the rotation of the axles 9 and 9 can be restricted. The gear PG may be provided to restrict the rotation of the output shaft 4.

  In this Embodiment, although it was set as the structure applied to the reduction gear 1, it is not restricted to this. For example, the present invention may be applied to a manual transmission, a planetary gear type automatic transmission, and a continuously variable transmission (CVT).

  This embodiment shows an example for carrying out the present invention. Therefore, the present invention is not limited to the configuration of the present embodiment.

1 Reducer (power transmission device)
2 Input shaft (rotary shaft)
4 Output shaft 6 Differential device 8 Reducer case (case member)
8a housing part 8b case main body part 9 axle 20 parking device (parking device)
22 Parking pole (engaging member)
24 Oscillating mechanism 30 Tooth part (tooth part)
42 Main body portion 42a Spherical concave portion (contact portion)
42b concave groove 42c circular concave portion 42d concave groove (regulator)
42e Through hole 44 Tooth part (engagement tooth)
52 Manual rod 54 Manual plate 56 Parking rod (drive member)
57 Cam member (drive member)
57a Cam spring 62 Support plate (support member)
62a body part 62b extension piece part (regulation part, extension piece part)
64 Support plate (support member)
72 Boss part 72a Fitting concave part 72b Fitting concave part (support part)
74 Boss portion 74a Fitting recess 82 Boss portion 82a Fitting recess G Drive gear G 'Driven gear OG Output gear PG Parking gear (parking gear)
B1 bearing B2 bearing B3 differential side bearing M motor RGM reduction gear mechanism RG ring gear OGM output gear mechanism C1 chamfer surface (first chamfer surface)
C2 chamfa surface (second chamfer surface)
ACTR Actuator RS Return Spring DS Detent Spring

Claims (8)

A parking device that regulates rotation of a rotating shaft to realize a parking state,
A parking gear having a plurality of teeth on the outer peripheral surface and fixed to the rotating shaft;
An engagement member having engagement teeth engageable with the tooth portion and disposed radially outward of the parking gear;
A support member that supports the engagement member so that the engagement member can swing in the axial direction of the rotation shaft;
A drive member configured to come into contact with the engagement member from the axial direction and swing the engagement member in the axial direction;
A parking device comprising: A first chamfer surface is formed at an end portion on the side facing the engaging tooth among both end portions in the tooth trace direction of the tooth portion,
2. A second chamfer surface that can abut against the first chamfer surface is formed at an end portion of the engagement tooth in the tooth trace direction on the side facing the first chamfer surface. Parking device according to. The support member is configured to sandwich the engagement member from both sides in the plate thickness direction of the engagement member,
The engagement member is configured to have the engagement teeth on one side with the support member interposed therebetween, and has an abutting portion on which the drive member can contact on the other side with the support member interposed therebetween. The parking apparatus according to claim 1, wherein the parking apparatus is configured as described above. The parking apparatus according to any one of claims 1 to 3, wherein the support member includes a restricting portion that restricts the engagement member from moving in a width direction of the engagement member. A case member;
A rotating shaft configured to be rotatable on the case member;
The parking device according to any one of claims 1 to 4,
With
A power transmission device configured to realize a parking state by restricting rotation of the rotary shaft by the parking device. The case member has a first case member and a second case member fastened to the first case member,
The rotating shaft is configured such that one end portion in the axial direction is supported by the first case member and the other end portion in the axial direction is supported by the second case member,
The support member includes a first support member supported by the first case member, and a second support member supported by the second case member,
The engaging member is configured to be supported by the case member so as to be swingable in the axial direction by being sandwiched by the first supporting member and the second supporting member from both sides in the plate thickness direction of the engaging member. The power transmission device according to claim 5. The extending piece part extended toward the said 2nd or 1st case member is provided in the said 1st or 2nd case member so that the width direction both sides of the said engagement member may be pinched | interposed. Power transmission device. The power transmission device according to claim 7, wherein the second or first case member is provided with a support portion configured to support the extending piece portion.

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