JP2019203594A - Parking lock mechanism - Google Patents

Abstract

To obtain a technology which can retain a shaft member which is necessary to be retained while preventing the lowering of a degree of freedom of an arrangement of the other member which is arranged adjacent to a parking lock mechanism.SOLUTION: A detent spring 20 comprises a supported part 23 supported to a fixed member, a first extension part 21 extending to a first direction from the supported part 23 in a reference direction view along a reference direction D, and formed with an engagement part 21a engaged with a recess 11, and a second extension part 22 extending to a second direction different from the first direction from the supported part 23 in the reference direction view. The supported part 23 is fastened to the fixed member by a fastening member which is inserted into a hole part 23a formed at the supported member 23 along the reference direction D. The second extension part 22 is arranged so as to opposite a face facing a first side D1 being one side of the shaft member 4 in the reference direction D.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a parking lock mechanism that engages an engagement member with a parking gear to restrict rotation of the parking gear.

  An example of the parking lock mechanism as described above is disclosed in Japanese Patent Laid-Open No. 2005-119371 (Patent Document 1). Hereinafter, reference numerals shown in parentheses in the description of the background art are those of Patent Document 1. Japanese Patent Application Laid-Open No. H10-228707 describes a technique related to retaining of a pole shaft (22) that supports a parking pole (20) so as to be swingable. Specifically, Patent Document 1 discloses a housing (in order to prevent the pole shaft (22) inserted into the shaft hole (24) formed in the housing (11) in the base end (23). The case (12) joined to 11) is provided with a retaining portion (43), and the retaining portion (43) is disposed so as to face the end surface (27a) of the tip portion (27) of the pole shaft (22). The configuration is described (paragraph 0036, FIG. 2).

  As in the case of the pole shaft in the configuration of Patent Document 1, the parking lock mechanism may be provided with a shaft member that needs to be prevented from being removed. In the parking lock mechanism of Patent Document 1, by providing a retaining portion on the case, The shaft member is prevented from coming off. However, in the case where the retaining portion is provided in the case in this way, the restriction on the relative arrangement position of the shaft member and the case increases, so that other members disposed in the case adjacent to the parking lock mechanism can be prevented. The degree of freedom of placement tends to decrease.

JP 2005-119371 A

  Therefore, it is desired to realize a technique capable of preventing a shaft member that needs to be removed while suppressing a decrease in the degree of freedom of arrangement of other members arranged adjacent to the parking lock mechanism.

  According to the present disclosure, a parking lock mechanism that engages an engaging member with a parking gear to restrict rotation of the parking gear is interlocked with a driving mechanism of the engaging member, and the driving mechanism moves the engaging member to the engaging member. A swingable support is provided between an engagement position corresponding to a position where the parking gear is engaged and a non-engagement position corresponding to a position where the drive mechanism disengages the engagement member from the parking gear. The detent plate, the detent spring that engages with the recess formed in the detent plate and holds the swing position of the detent plate, and the movement to the first side that is one side in the reference direction are possible A shaft member supported by a fixed member, and the detent spring is supported by the fixed member and the supported portion as viewed in a reference direction along the reference direction. A first extending portion formed with an engaging portion that extends in a first direction and engages with the concave portion, and a second direction different from the first direction from the supported portion in the reference direction view. A second extending portion that extends, and the supported portion is connected to the fixing member by a fastening member that is inserted along the reference direction with respect to a hole formed in the supported portion. The second extending portion is disposed so as to face the surface of the shaft member facing the first side.

  According to this configuration, the shaft member can be prevented from coming off to the first side by the second extending portion. And since the 2nd extension part which functions as a retaining part of a shaft member is provided in the detent spring which comprises a parking lock mechanism with a shaft member, the retaining part of a shaft member is arrange | positioned around a parking lock mechanism. Compared to the case where the member is provided on another member (for example, a case that accommodates the parking lock mechanism), the influence on the arrangement of the other member arranged adjacent to the parking lock mechanism can be easily suppressed. That is, according to the above configuration, it is possible to prevent the shaft member that needs to be prevented from being detached while suppressing a decrease in the degree of freedom in arranging other members disposed adjacent to the parking lock mechanism.

  Further features and advantages of the parking lock mechanism will become clear from the following description of embodiments described with reference to the drawings.

The perspective view which shows schematic structure of a parking lock mechanism View of the parking lock mechanism in the locked state as seen in the reference direction View of the parking lock mechanism in the locked state as seen in the direction perpendicular to the reference direction View of the parking lock mechanism in the unlocked state as viewed in the reference direction View of the parking lock mechanism in the unlocked state as viewed in the direction perpendicular to the reference direction The figure which looked at the parking lock mechanism concerning other embodiments in the standard direction.

  An embodiment of a parking lock mechanism will be described with reference to the drawings. In the following description, terms relating to dimensions, arrangement directions, arrangement positions, and the like of each member are concepts including a state having a difference due to an error (an error that is acceptable in manufacturing). In the drawings referred to below, a part of the parking lock mechanism is appropriately omitted for easy understanding.

  The parking lock mechanism is a mechanism that regulates rotation of the parking gear by engaging an engaging member with the parking gear. The parking lock mechanism is provided in a vehicle drive transmission device that transmits the drive force of a wheel drive force source (such as an internal combustion engine or a rotating electric machine) to the wheels. For example, the parking lock mechanism is provided in an automatic transmission included in the vehicle drive transmission device. The parking gear is provided so as to always rotate in conjunction with the wheel. When the parking range is selected by the range selection device, the parking lock mechanism is controlled so that the engagement member is engaged with the parking gear, thereby locking the wheel. Further, when the non-parking range (that is, the forward range, the reverse range, or the neutral range) is selected by the range selection device, the engagement member is disengaged from the parking gear so as to be in the unlocked state. When the parking lock mechanism is controlled, the wheel is unlocked.

  As shown in FIG. 1, the parking lock mechanism 1 includes a detent plate 10 (detent lever), a detent spring 20, and a shaft member 4. As will be described in detail later, the shaft member 4 is supported by a fixing member 70 (see FIG. 3) so as to be movable in the reference direction first side D1, which is one side of the reference direction D. The parking lock mechanism 1 further includes an engagement member 3, a drive mechanism 50 that drives the engagement member 3, and a support shaft 60 that supports the detent plate 10. The parking lock mechanism 1 is accommodated in a case 100 (see FIG. 3). The fixing member 70 is a member whose position with respect to the case 100 is fixed. The fixing member 70 is formed integrally with the case 100 (for example, configured by a part of the case 100) or is configured by another member fixed to the case 100. The case 100 also houses a parking gear 2 (see FIG. 2) and a device (for example, an automatic transmission) that constitutes the vehicle drive transmission device described above. In the present embodiment, the reference direction first side D1 corresponds to the “first side”, and the reference direction second side D2 that is the opposite side of the reference direction first side D1 in the reference direction D is the “second side”. Equivalent to.

  The detent plate 10 is configured to be interlocked with the drive mechanism 50 of the engagement member 3. The detent plate 10 has an engagement position P1 (see FIGS. 1 and 3) corresponding to a position where the drive mechanism 50 engages the engagement member 3 with the parking gear 2, and the drive mechanism 50 includes the engagement member 3. It is swingably supported at a non-engagement position P2 (see FIG. 5) corresponding to a position at which engagement with the parking gear 2 is released. The control device that controls the state of the parking lock mechanism 1 switches the swing position (posture) of the detent plate 10 to the engagement position P1 when the parking range is selected by the range selection device, and the range selection device When the parking range is selected, the swing position of the detent plate 10 is switched to the non-engagement position P2.

  As shown in FIG. 1, the detent plate 10 is supported by a support shaft 60 disposed on the second axis A2 so as to be swingable around the second axis A2. In the present embodiment, the second axis A2 is an axis along a direction orthogonal to the reference direction D. In the present embodiment, the support shaft 60 is a rotating shaft (driving shaft) rotated by a driving force source such as a motor, and is connected to the detent plate 10 so as to rotate integrally around the second axis A2. Yes. The control device that controls the state of the parking lock mechanism 1 swings the detent plate 10 by rotating the support shaft 60. The detent plate 10 is supported by the support shaft 60 so as to be relatively rotatable about the second axis A2, and the detent plate 10 is provided by a drive mechanism (for example, a mechanism using a piston) provided separately from the support shaft 60. It can also be configured to be swung.

  The detent spring 20 is a member (spring member) that engages with the recess 11 formed in the detent plate 10 and holds the swing position of the detent plate 10. In the present embodiment, the detent plate 10 is formed with a plurality of recesses 11, and the detent spring 20 is engaged with any of the plurality of recesses 11 formed in the detent plate 10 to swing the detent plate 10. Hold the moving position. The plurality of recesses 11 include a locking recess 11p (parking range recess) for holding the swing position of the detent plate 10 at the engagement position P1, and the swing position of the detent plate 10 at the non-engagement position P2. A non-lock recess 11n (non-parking range recess) for holding is included.

  As shown in FIGS. 1 and 3, in a state where the swing position of the detent plate 10 is switched to the engagement position P1, the detent spring 20 is engaged with the locking recess 11p, whereby the detent plate 10 is swung. The moving position is held at the engagement position P <b> 1 by the urging force (elastic force) of the detent spring 20. Further, as shown in FIG. 5, in a state where the swing position of the detent plate 10 is switched to the non-engagement position P2, the detent spring 20 is engaged with the non-lock recess 11n, so that the detent plate 10 The swing position is held at the non-engagement position P <b> 2 by the biasing force of the detent spring 20.

  In the present embodiment, the detent plate 10 has a plurality of non-locking recesses 11n (here, two non-locking recesses 11n) corresponding to a plurality of non-parking ranges. When the non-parking range is selected by the range selection device, the swing position of the detent plate 10 is selected from the plurality of non-engaging positions P2 corresponding to the plurality of non-locking recesses 11n. The position is switched to the non-engagement position P2 where the detent spring 20 is engaged with the non-lock recess 11n corresponding to the range. Note that only one or three or more non-lock recesses 11n may be formed in the detent plate 10.

  As shown in FIGS. 1 to 3, the detent spring 20 includes a supported portion 23 supported by the fixing member 70, and a first extending portion 21 and a second extending portion 22 that extend from the supported portion 23, respectively. And. As will be described later, the first extending portion 21 and the second extending portion 22 are formed so as to extend from the supported portion 23 in different directions when viewed in the reference direction along the reference direction D.

  As shown in FIG. 3, the supported portion 23 is inserted by a fastening member 90 (bolt) inserted along the reference direction D with respect to the hole portion 23 a (see FIG. 1) formed in the supported portion 23. Fastened to the fixing member 70. That is, the third axis A3 that is the axis of the fastening member 90 is an axis that is parallel to the reference direction D. The supported portion 23 is formed in a flat plate shape along a plane orthogonal to the reference direction D, and the hole 23 a is formed so as to penetrate the supported portion 23 in the reference direction D. The fastening member 90 is inserted from the reference direction first side D1 with respect to the hole 23a, and the supported portion 23 is fastened to the fixing member 70 from the reference direction first side D1. Specifically, the fixing member 70 includes a second fixing portion 72 formed in a cylindrical shape extending in the reference direction D. Although illustration is omitted, a fastening hole of the fastening member 90 is formed at the end of the second fixing portion 72 on the first reference direction first side D1. Fastening inserted into the hole 23a from the reference direction first side D1 in a state where the supported portion 23 is disposed so as to contact the end face of the second fixing portion 72 on the reference direction first side D1. The member 90 is fastened to the second fixing portion 72.

  As shown in FIG. 2, the first extension portion 21 is formed to extend from the supported portion 23 in the first direction E1 when viewed in the reference direction. That is, the first extending portion 21 has a portion extending in a direction intersecting the reference direction D. As shown in FIG. 3, in the present embodiment, the first extending portion 21 is supported in a direction toward the reference direction second side D <b> 2 as it is separated from the supported portion 23 in a direction orthogonal to the reference direction D. It is formed to extend from. Therefore, the tip end portion (the end portion on the opposite side of the supported portion 23 side) of the first extending portion 21 is disposed on the reference direction second side D <b> 2 with respect to the supported portion 23.

  The first extending portion 21 is formed with an engaging portion 21 a that engages with the concave portion 11 formed in the detent plate 10. The engaging portion 21 a is formed at the distal end portion of the first extending portion 21. Specifically, the engaging portion 21 a is configured by a roller that is rotatably provided at the distal end portion of the first extending portion 21. The first extending portion 21 is formed in a plate shape as a whole, and functions as a spring (plate spring) that applies a biasing force to the detent plate 10.

  As shown in FIG. 2, the second extending portion 22 is formed so as to extend from the supported portion 23 in a second direction E2 different from the first direction E1 when viewed in the reference direction. In other words, the second extending portion 22 has a portion extending in a direction intersecting the reference direction D. As shown in FIG. 3, in the present embodiment, the second extending portion 22 is formed to extend from the supported portion 23 in a direction orthogonal to the reference direction D. Further, as shown in FIG. 2, in the present embodiment, the second extending portion 22 includes a base end portion (an end portion on the supported portion 23 side) and a distal end portion 22a (the opposite side to the supported portion 23 side). In an intermediate portion between the end portion and the reference portion (see FIG. 3), it is formed so as to be bent in a dogleg shape within a plane orthogonal to the reference direction D.

  As shown in FIGS. 1 and 3, the shaft member 4 is arranged on the first axis A <b> 1 parallel to the reference direction D so as to extend along the reference direction D. The shaft member 4 is supported by the fixing member 70 so as to be movable in the reference direction first side D1. That is, the shaft member 4 is supported by the fixing member 70 in a state in which it is necessary to prevent the shaft member 4 from coming off to the reference direction first side D1. As shown in FIGS. 1 to 3, the first axis A1 and the third axis A3 described above are both axes parallel to the reference direction D, but are arranged at different positions in the reference direction view. Yes. That is, the shaft member 4 is disposed at a position different from the fastening member 90 and the supported portion 23 as viewed in the reference direction.

  As shown in FIG. 3, in the present embodiment, the fixing member 70 includes a first fixing portion 71 in which a first hole 71a is formed. The first hole 71a is formed to have an opening that opens toward the reference direction first side D1, and the end of the shaft member 4 on the reference direction second side D2 is formed in the first hole 71a. On the other hand, it is inserted from the reference direction first side D1. In the present embodiment, the first hole 71a is formed so that the end of the reference direction second side D2 is closed. Thereby, the shaft member 4 is moved to the reference direction first side D1 in a state where the movement to the reference direction second side D2 is restricted by the bottom of the first hole 71a (the end of the reference direction second side D2). Is supported by the first fixing portion 71 so as to be movable. The first hole 71a is formed so as to have an opening that opens toward the reference direction second side D2, and the member (such as a knock pin) fixed to the inside of the first hole 71a is used for the shaft member 4. It can also be set as the structure by which the movement to the reference direction 2nd side D2 is controlled.

  In the present embodiment, the shaft member 4 supports the engaging member 3 so as to be swingable. That is, the engaging member 3 is supported by the shaft member 4 disposed on the first axis A1 so as to be swingable around the first axis A1. Specifically, as shown in FIGS. 1 to 3, the engaging member 3 is a parking pole 40 that is swingably supported, and the shaft member 4 is a pole that supports the parking pole 40 to be swingable. This is a shaft 30 (parking pole shaft). As shown in FIGS. 1 and 3, the parking pole 40 has a through-hole 43 that penetrates the parking pole 40 in the reference direction D, and the pole shaft 30 is inserted into the through-hole 43. The parking pole 40 is swingably supported.

  In the present embodiment, as shown in FIG. 3, the first fixing portion 71 of the fixing member 70 has a first hole portion 71 a into which the portion of the pole shaft 30 on the second side D <b> 2 in the reference direction is inserted in the reference direction D. A slit 71b (groove) is formed so as to be divided. Then, in a state where the portion where the through hole 43 is formed in the parking pole 40 is inserted into the slit 71 b, the portion on the second side D <b> 2 in the reference direction of the pole shaft 30 is located with respect to the first hole 71 a and the through hole 43. It is inserted from the reference direction first side D1.

  As shown in FIGS. 1 and 2, the parking pole 40 includes a claw portion 41 that engages with the parking gear 2. The parking pole 40 swings between a position where the pawl 41 is engaged with the parking gear 2 (see FIG. 2) and a position where the pawl 41 is released from the parking gear 2 (see FIG. 4). It is supported movably. The parking pole 40 is urged toward the side where the claw portion 41 is separated from the parking gear 2 by an urging member 91 attached to the pole shaft 30.

  The parking pole 40 is driven by the drive mechanism 50. As shown in FIGS. 1 and 3, the drive mechanism 50 includes a cam member 52 that swings the parking pole 40 by moving toward or away from the parking pole 40 in conjunction with the swing of the detent plate 10. ing. Specifically, the drive mechanism 50 includes a parking rod 51 that supports the cam member 52. The base end portion of the parking rod 51 is connected to the detent plate 10, and the parking rod 51 moves in the reference direction D in conjunction with the swinging of the detent plate 10. The cam member 52 is supported by a portion of the parking rod 51 on the distal end portion (the end portion opposite to the coupling portion side with the parking rod 51) side in a state of being biased toward the distal end portion side. .

  The cam member 52 has a conical outer peripheral surface having a smaller diameter toward the reference direction second side D2. As shown in FIG. 3, when the swing position of the detent plate 10 is switched to the engagement position P1, the cam receiving surface 42 (see FIG. 3) in which the large diameter portion of the cam member 52 is formed on the parking pole 40. 1 and FIG. 2), the portion of the parking pole 40 where the cam receiving surface 42 is formed is pressed toward the parking gear 2 by the cam member 52 against the biasing force of the biasing member 91. . Thereby, as shown in FIG. 2, the claw portion 41 is engaged with the parking gear 2 and the rotation of the parking gear 2 is restricted. Thus, the engagement position P1 corresponds to a position where the drive mechanism 50 engages the engagement member 3 (parking pole 40) with the parking gear 2.

  On the other hand, as shown in FIG. 5, in a state where the swing position of the detent plate 10 is switched to the non-engagement position P <b> 2, the small-diameter portion of the cam member 52 or the front end side of the cam member 52 in the parking rod 51. When the portion abuts against the cam receiving surface 42 or the cam member 52 and the parking rod 51 are separated from the cam receiving surface 42, the pressing of the parking pole 40 to the parking gear 2 side by the cam member 52 is released. The Thereby, as shown in FIG. 4, the claw portion 41 is detached from the parking gear 2, and the parking gear 2 is allowed to rotate. Thus, the disengagement position P2 corresponds to a position where the drive mechanism 50 releases the engagement member 3 (parking pole 40) from the parking gear 2.

  Incidentally, as described above, the shaft member 4 (the pole shaft 30) is supported by the fixing member 70 so as to be movable toward the reference direction first side D1. In the parking lock mechanism 1, the shaft member 4 is prevented from coming off to the first side D <b> 1 in the reference direction by the second extending portion 22 of the detent spring 20. In the present embodiment, in addition to preventing the shaft member 4 from coming off, the second extending portion 22 also prevents the detent spring 20 from rotating. Hereinafter, the retaining structure of the shaft member 4 and the detent structure of the detent spring 20 according to the present embodiment will be described.

  As described above, the second extending portion 22 is formed to extend laterally from the supported portion 23 (specifically, in the second direction E2) when viewed in the reference direction. And as shown in FIGS. 1-3, the 2nd extension part 22 is arrange | positioned so that the surface which faces the reference direction 1st side D1 of the shaft member 4 may be opposed. Accordingly, the movement of the shaft member 4 to the reference direction first side D1 is restricted by the contact between the shaft member 4 and the second extending portion 22, and the shaft member 4 is prevented from coming off to the reference direction first side D1. It is possible to do. In addition, even if it arrange | positions so that the 2nd extension part 22 may contact the surface which faces the reference direction 1st side D1 of the shaft member 4, it is a distance with respect to the surface which faces the reference direction 1st side D1 of the shaft member 4. (Distance within a range in which the shaft member 4 can be prevented from coming off) may be arranged with a gap. In the present embodiment, the movement of the shaft member 4 to the reference direction second side D2 is restricted (specifically, the end of the shaft member 4 on the reference direction second side D2 is the bottom of the first hole 71a). The second extending portion 22 is disposed at a distance from the surface of the shaft member 4 facing the first direction D1 in the reference direction. This distance is set shorter than the insertion length of the shaft member 4 with respect to the first fixing portion 71 (first hole portion 71a) of the fixing member 70.

  In the present embodiment, the movement of the shaft member 4 to the reference direction first side D1 is configured to be regulated by the contact between the end surface 31 of the shaft member 4 on the reference direction first side D1 and the second extending portion 22. Has been. That is, in this embodiment, the 2nd extension part 22 is included in the surface which faces the reference direction 1st side D1 of the shaft member 4, so that the end surface 31 of the reference direction 1st side D1 of the shaft member 4 may be opposed. Has been placed. In the present embodiment, the end surface 31 of the shaft member 4 on the first side D1 in the reference direction is formed in an annular shape when viewed in the reference direction, and the second extending portion 22 faces a part of the end surface 31. Has been placed.

  As described above, in the present embodiment, the second extending portion 22 extends from the supported portion 23 in a direction orthogonal to the reference direction D (that is, along a plane orthogonal to the reference direction D). 3, in this embodiment, the surface of the second extending portion 22 that faces the reference direction first side D1 of the shaft member 4 (here, the reference direction first side). The portion disposed so as to face the end surface 31 of D1 is disposed on the same plane (plane orthogonal to the reference direction D) as the supported portion 23. In this parking lock mechanism 1, the shaft member 4 is disposed. Both the direction in which retaining of the detent spring 20 is required and the fastening direction of the supported portion 23 of the detent spring 20 with respect to the fixing member 70 are the directions along the reference direction D. Therefore, the supported portion 23 in the second extending portion 22. The part arranged on the same plane as It can be set as the structure arrange | positioned so as to oppose the surface which faces the reference direction 1st side D1 of the member 4, As a result, simplification of the shape of the 2nd extension part 22 is attained. .

  In the present embodiment, the second extending portion 22 is locked to the non-rotating member 5 so as to restrict the rotation of the detent spring 20 around the third axis A3 (the axis of the fastening member 90). Yes. Here, the non-rotating member 5 is a member supported so that the rotation around the third axis A <b> 3 is restricted with respect to the fixed member 70. A portion of the second extending portion 22 that is locked to the fixing member 70 or the non-rotating member 5 (in this embodiment, the non-rotating member 5) is the fastening member 90 (third axis A3) as viewed in the reference direction. Arranged at different positions. By adopting a configuration in which the second extending portion 22 is locked to the non-rotating member 5 in this way, the detent spring 20 is prevented from rotating by the second extending portion 22 in addition to preventing the shaft member 4 from coming off. It is possible. The second extending portion 22 is locked to the non-rotating member 5 so as to restrict the rotation of the detent spring 20 around the third axis A3 in at least one direction. In the present embodiment, the second extending portion 22 is locked to the non-rotating member 5 so as to restrict the bidirectional rotation of the detent spring 20 around the third axis A3.

  In the present embodiment, the non-rotating member 5 to which the second extending portion 22 is locked is the shaft member 4. The shaft member 4 is inserted into a first hole 71 a formed in the fixing member 70 (first fixing portion 71) with respect to the fixing member 70 with respect to the reference direction second side D <b> 2 of the shaft member 4. Thus, the rotation around the third axis A3 is supported. The second extending portion 22 is locked to the shaft member 4 so as to restrict the rotation of the detent spring 20 around the third axis A3. Here, the distal end portion 22 a of the second extending portion 22 is locked to the shaft member 4.

  Specifically, as shown in FIGS. 2 and 3, the shaft member 4 includes an opening 32 that opens toward the reference direction first side D <b> 1 on the end surface 31 of the reference direction first side D <b> 1. The distal end portion 22 a of the second extending portion 22 is inserted into the opening portion 32 of the shaft member 4. Specifically, as shown in FIG. 3, the second extending portion 22 is bent so that the distal end portion 22 a faces the reference direction second side D <b> 2. Here, the 2nd extension part 22 is bent so that tip part 22a may go to reference direction 2nd side D2 along reference direction D. The bent portion for bending the second extending portion 22 in this way is a tip portion 22a than the portion of the second extending portion 22 that faces the end surface 31 on the reference direction first side D1 of the shaft member 4. It is formed in a portion on the side (here, a portion adjacent to the tip 22a side with respect to the portion facing the end surface 31). And the front-end | tip part 22a of the 2nd extension part 22 is inserted from the reference direction 1st side D1 with respect to the opening part 32 of the shaft member 4. As shown in FIG. As described above, when the distal end portion 22 a of the second extending portion 22 is inserted into the opening portion 32, a part of the second extending portion 22 including the distal end portion 22 a is in the hole for forming the opening portion 32. The distal end portion 22 a of the second extending portion 22 is locked to the shaft member 4.

[Other Embodiments]
Next, other embodiments of the parking lock mechanism will be described.

(1) In the above embodiment, the configuration in which the second extending portion 22 is locked to the shaft member 4 that is the non-rotating member 5 has been described as an example. However, without being limited to such a configuration, when the non-rotating member 5 different from the shaft member 4 is provided in the parking lock mechanism 1 or other members disposed around the parking lock mechanism 1. The second extending portion 22 may be configured to be engaged with the non-rotating member 5 different from the shaft member 4 so as to restrict the rotation of the detent spring 20 around the third axis A3. In this case, unlike the above-described embodiment, the portion of the second extending portion 22 that is closer to the supported portion 23 than the portion that faces the end surface 31 of the shaft member 4 on the first direction D1 side in the reference direction is a non-rotating member. It can also be set as the structure latched by 5.

(2) In the above embodiment, the second extending portion 22 is attached to the non-rotating member 5 (the shaft member 4 in the above embodiment) so as to restrict the rotation of the detent spring 20 around the third axis A3. The configuration to be locked has been described as an example. However, without being limited to such a configuration, the second extending portion 22 is configured to be locked to the fixing member 70 so as to restrict the rotation of the detent spring 20 around the third axis A3. You can also. An example of such a configuration is shown in FIG. In the example shown in FIG. 6, the fixing member 70 includes a third fixing portion 73 on which the second extending portion 22 is locked. Here, the 3rd fixing | fixed part 73 is formed in the cylindrical shape extended in the reference direction D, and is provided with the 3rd opening part 73a opened toward the reference direction 1st side D1. The second extending portion 22 is locked to the third fixing portion 73 by inserting the distal end portion 22 a of the second extending portion 22 into the third opening 73 a of the third fixing portion 73. In addition, although the case where the 3rd fixing | fixed part 73 was formed in the cylindrical shape extended in the reference direction D was illustrated here, the 3rd fixing | fixed part 73 is 2nd extension by a pair of wall part extended in the reference direction D, for example. You may form in the shape which pinches the protrusion part 22 from the both sides of the width direction (direction orthogonal to the extension direction of the 2nd extension part 22 by the reference direction view). Further, here, a portion of the second extending portion 22 on the side of the distal end portion 22a (specifically, the distal end portion 22a) with respect to the portion facing the end face 31 on the first direction D1 side D1 of the shaft member 4, Although the structure latched by the fixing member 70 (third fixing portion 73) is exemplified, the second extending portion 22 is supported more than the portion facing the end surface 31 on the first direction D1 side D1 of the shaft member 4. It is good also as a structure by which the part by the side of the part 23 is latched by the fixing member 70 (3rd fixing | fixed part 73).

(3) In the above embodiment, another member (in the above embodiment, the non-rotating member 5) is set so that the second extending portion 22 restricts the rotation of the detent spring 20 around the third axis A3. The configuration locked to the above has been described as an example. However, without being limited to such a configuration, for example, a portion for restricting the rotation of the detent spring 20 around the third axis A3 (a portion for preventing the detent spring 20 from rotating) is the second portion. A configuration in which the detent spring 20 is provided separately from the extending portion 22 or a structure in which the detent spring 20 is prevented from rotating may be provided in the supported portion 23. In the case of adopting such a configuration, unlike the above-described embodiment, the second extending portion 22 may be configured not to be bent so that the distal end portion 22a faces the reference direction second side D2.

(4) In the above-described embodiment, the portion of the second extending portion 22 that is disposed so as to face the end surface 31 on the reference direction first side D1 of the shaft member 4 is the same plane as the supported portion 23 (reference A configuration arranged on a plane orthogonal to the direction D) has been described as an example. However, without being limited to such a configuration, the portion of the second extending portion 22 that is disposed so as to face the end surface 31 on the first direction D1 side D1 of the shaft member 4 is the supported portion 23. It can also be set as the structure arrange | positioned in the position where the reference direction D differs. In the case of adopting such a configuration, unlike the above-described embodiment, the second extending portion 22 extends from the supported portion 23 along the reference direction D and then intersects the reference direction D. It can also be set as the structure extended in the direction (for example, the direction orthogonal to the reference direction D) to do.

(5) In the above embodiment, the movement of the shaft member 4 to the reference direction first side D1 is restricted by the contact between the end surface 31 of the shaft member 4 on the reference direction first side D1 and the second extending portion 22. The configuration is described as an example. However, without being limited to such a configuration, the movement of the shaft member 4 toward the first reference direction first side D1 is a surface facing the first reference direction first side D1 of the shaft member 4 other than the end surface 31; It can also be set as the structure controlled by the contact with the extension part 22. FIG. For example, in the configuration of the above-described embodiment, the movement of the shaft member 4 toward the reference direction first side D <b> 1 is a hole for forming the distal end portion 22 a of the second extending portion 22 and the opening portion 32 in the shaft member 4. It can be set as the structure controlled by a contact with the bottom face (an example of the surface which faces the reference direction 1st side D1 of the shaft member 4) of a part. Thus, the movement of the shaft member 4 toward the reference direction first side D1 is a surface facing the reference direction first side D1 of the shaft member 4 other than the end surface 31 of the reference direction first side D1 of the shaft member 4 (hereinafter, “ When it is set as the structure controlled by the contact with the 2nd extension part 22, the 2nd extension part 22 should just be arrange | positioned so that the said contact object surface may be opposed. The shaft member 4 need not be disposed so as to face the end surface 31 on the first side D1 in the reference direction.

(6) It should be noted that the configuration disclosed in each of the above-described embodiments is applied in combination with the configuration disclosed in the other embodiment unless there is a contradiction (between the embodiments described as other embodiments. (Including combinations) is also possible. Regarding other configurations, the embodiments disclosed herein are merely examples in all respects. Accordingly, various modifications can be made as appropriate without departing from the spirit of the present disclosure.

[Overview of the above embodiment]
The outline of the parking lock mechanism described above will be described below.

  A parking lock mechanism (1) for restricting the rotation of the parking gear (2) by engaging the engaging member (3) with the parking gear (2) includes a drive mechanism (50) of the engaging member (3) and In conjunction, the drive mechanism (50) engages the engagement position (P1) corresponding to the position where the engagement member (3) engages the parking gear (2), and the drive mechanism (50) engages the engagement. A detent plate (10) that is swingably supported at a non-engagement position (P2) corresponding to a position at which the engagement of the member (3) with the parking gear (2) is released, and the detent plate ( A detent spring (20) that engages with the recess (11) formed in 10) and holds the swing position of the detent plate (10), and a first side that is one side in the reference direction (D) ( D1) can be moved to the fixed member ( 0), and the detent spring (20) includes a supported portion (23) supported by the fixing member (70) and the reference direction (D). A first extending portion (21) formed with an engaging portion (21a) extending from the supported portion (23) in the first direction (E1) and engaging with the recessed portion (11) as viewed in the reference direction. And a second extending portion (22) extending from the supported portion (23) in the second direction (E2) different from the first direction (E1) in the reference direction view, The supported portion (23) is formed by the fastening member (90) inserted along the reference direction (D) with respect to the hole (23a) formed in the supported portion (23). 70) and the second extension portion (22) is connected to the first side (D1) of the shaft member (4). It is disposed so as to face the surface facing.

  According to this configuration, the shaft member (4) can be prevented from coming off to the first side (D1) by the second extending portion (22). And since the 2nd extension part (22) which functions as a retaining part of a shaft member (4) is provided in the detent spring (20) which comprises a parking lock mechanism (1) with a shaft member (4), Compared to the case where the retaining portion of the member (4) is provided on another member (for example, a case for housing the parking lock mechanism (1)) disposed around the parking lock mechanism (1), the parking lock mechanism It is easy to suppress the influence on the arrangement of other members arranged adjacent to (1). That is, according to the above configuration, the shaft member (4) that needs to be retained can be prevented from coming off while suppressing a decrease in the degree of freedom of placement of other members arranged adjacent to the parking lock mechanism (1). It can be carried out.

  Here, the second extending portion (22) is engaged with the fixing member (70) so as to restrict the rotation of the detent spring (20) around the axis (A3) of the fastening member (90). It is preferable that it is stopped or locked to the non-rotating member (5) supported so that the rotation around the axis (A3) is restricted with respect to the fixing member (70).

  According to this configuration, the detent spring (20) can be prevented from being rotated in addition to the shaft member (4) from being detached by the second extending portion (22). Therefore, the detent spring (20) can be increased in size compared to the case where the detent spring (20) is provided with a detent spring (20) separately from the second extending portion (22). Both the shaft member (4) can be prevented from coming off and the detent spring (20) can be prevented from rotating while suppressing an increase in mass.

  As described above, in the configuration in which the second extension portion (22) is locked to the fixing member (70) or the non-rotating member (5), the second extension portion (22) The second extension (D2) is defined as a second side (D2) opposite to the first side (D1) in the reference direction (D). The portion (22) is bent so that the tip (22a), which is the end opposite to the supported portion (23), is directed to the second side (D2), and the shaft member (4) is The end surface (31) of the first side (D1) is provided with an opening (32) that opens toward the first side (D1), and the tip end portion (22a) of the second extension portion (22). Is preferably inserted into the opening (32) of the shaft member (4).

  According to this structure, the structure for latching the 2nd extension part (22) can be formed in a part of shaft member (4) used as the object of retaining. Therefore, the parking lock mechanism (1) is provided as compared with the case where a structure (for example, a cylindrical boss portion) for locking the second extending portion (22) is provided on the fixing member (70). It is easy to reduce the size and weight of the entire device.

  In the parking lock mechanism (1) having each configuration described above, the engagement member (3) is a parking pole (40) supported so as to be swingable, and the drive mechanism (50) is configured to support the detent plate (10). ) And a cam member (52) that swings the parking pole (40) by moving toward or away from the parking pole (40) in conjunction with the swinging of the parking pole (40). A pole shaft (30) that supports the parking pole (40) in a swingable manner is preferable.

  According to this configuration, it is possible to appropriately prevent the pole shaft (30) that supports the parking pole (40) from swinging by using the detent spring (20).

  The parking lock mechanism according to the present disclosure only needs to exhibit at least one of the effects described above.

1: parking lock mechanism 2: parking gear 3: engagement member 4: shaft member 5: non-rotating member 10: detent plate 11: recess 20: detent spring 21: first extending portion 21a: engaging portion 22: second Extension part 22a: tip part 23: supported part 23a: hole part 30: pole shaft 31: end face 32: opening part 40: parking pole 50: drive mechanism 52: cam member 70: fixing member 90: fastening member A3: first 3-axis (fastening member axis)
D: Reference direction D1: Reference direction first side (first side)
D2: Reference direction second side (second side)
E1: First direction E2: Second direction P1: Engagement position P2: Non-engagement position

Claims (4)

A parking lock mechanism that engages an engagement member with the parking gear to restrict rotation of the parking gear;
In conjunction with the engagement member drive mechanism, the drive mechanism engages the parking gear with an engagement position corresponding to a position where the engagement member engages the parking gear. A detent plate supported so as to be swingable at a non-engagement position corresponding to a position for releasing the engagement;
A detent spring that engages a recess formed in the detent plate and holds the swing position of the detent plate;
A shaft member supported by a fixed member so as to be movable to the first side, which is one side of the reference direction,
The detent spring includes a supported portion supported by the fixing member, and an engaging portion that extends from the supported portion in the first direction when viewed in the reference direction along the reference direction and engages the recess. A first extending portion formed, and a second extending portion extending from the supported portion in a second direction different from the first direction in the reference direction view,
The supported portion is fastened to the fixed member by a fastening member inserted along the reference direction with respect to a hole formed in the supported portion,
The parking lock mechanism, wherein the second extension portion is disposed to face a surface of the shaft member facing the first side.   The second extending portion is locked to the fixing member so as to restrict the rotation of the detent spring around the axis of the fastening member, or the rotation around the axis is performed with respect to the fixing member. The parking lock mechanism according to claim 1, wherein the parking lock mechanism is locked to a non-rotating member supported so as to be regulated. The second extending portion is locked to the shaft member which is the non-rotating member,
In the reference direction, the side opposite to the first side is the second side, and the tip of the second extending portion is the end opposite to the supported portion side is directed to the second side. Bent into
The shaft member includes an opening that opens toward the first side on an end surface of the first side,
The parking lock mechanism according to claim 2, wherein the distal end portion of the second extending portion is inserted into the opening of the shaft member. The engaging member is a parking pole supported so as to be swingable,
The drive mechanism includes a cam member that swings the parking pole by moving toward or away from the parking pole in conjunction with the swing of the detent plate.
The parking lock mechanism according to any one of claims 1 to 3, wherein the shaft member is a pole shaft that rotatably supports the parking pole.

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