JP4569288B2 - Parking device - Google Patents

Description

  The present invention relates to a parking device used in, for example, an automatic transmission or a hybrid drive device mounted on a vehicle or the like, and more specifically, at least one portion is bent and formed on a detent plate that is rotated based on an operation of a shift lever. The present invention relates to a parking device having a protrusion for attaching a parking rod.

  Conventionally, for example, in an automatic transmission or a hybrid drive device mounted on a vehicle or the like, when a P (parking) range is selected and operated by a shift lever, the parking pole is engaged with a parking gear connected to wheels. An operating parking device is provided. This is a detent plate that rotates based on the operation of a shift lever in a detent mechanism for maintaining the shift position, and is attached to the detent plate and moves in an axial direction in accordance with the rotation of the detent plate. Parking rod, a wedge that is slidably disposed on the parking rod and biased by a spring, and parking that presses the parking pole and engages the parking gear when the wedge is fitted In other words, when the shift lever is operated to the P range, the parking gear meshes with the parking pole, and the vehicle is kept stationary (see Patent Document 1). ).

  In such a parking device, when the parking rod and the detent plate are attached, the parking rod is formed to have a main body shaft portion and a mounting shaft portion extending perpendicularly to the main body shaft portion (that is, L After the engagement shaft portion of the parking rod is inserted through the mounting hole of the detent plate, it is directed radially outward from the outer peripheral portion of the mounting shaft portion in the vicinity of the opening portions on both sides of the mounting hole. The caulking projecting in four places is formed, and the detent plate is sandwiched between the four caulking positions for attachment.

Japanese Patent Laid-Open No. 11-1158

  Incidentally, the detent plate is generally connected so as to drive a manual valve for determining a shift position in the hydraulic control device. Further, for example, in the design process of the automatic transmission, the gear mechanism and the hydraulic control device of the automatic transmission are the main parts of the automatic transmission, and therefore their arrangement is determined first. Therefore, the arrangement position of the detent plate is limited in accordance with the arrangement of the hydraulic control device. On the other hand, since the parking gear is arranged on the output shaft connected to the wheel, the parking gear having a fitting hole into which the parking rod is fitted and removed from the arrangement of the parking pole for meshing with the parking gear. The arrangement of the pole mechanism will be determined. Therefore, the relative positional relationship between the detent plate and the parking pole mechanism is not necessarily a favorable positional relationship for the arrangement of the parking rod, rather than redesigning the automatic transmission for their relative positional relationship. It is cheaper and easier to bend the parking rod.

  Further, an important part as an automatic transmission may be arranged between the position of the detent plate and the parking pole mechanism. In order to prevent the parking rod from interfering with the part, the parking rod is It may be necessary to bend.

  On the other hand, due to the recent demand for downsizing of automatic transmissions, it is desired to shorten the distance between the detent plate and the parking pole mechanism, that is, to shorten the parking rod.

  However, when the wedge is not fitted to the parking pole mechanism (that is, other than the P range), the parking rod is not fitted to any object, and the tip of the parking rod is not attached to the parking pole mechanism. Even if it is caught in the fitting hole, the parking rod swings within that range. Therefore, especially when the parking rod is shortened, the swing angle of the parking rod increases, and depending on the angle of the above-described crimped portion, there is a possibility that a load is generated on the crimped portion. Further, when the parking rod is bent as described above, the angle between the mounting shaft portion attached to the detent plate of the parking rod and the main body shaft portion extending from the mounting shaft portion is not necessarily the wedge. The angle is not limited to the direction in which the main body shaft portion is extended. Even if the caulking portion is formed perpendicularly to the extending direction of the main body shaft portion, the caulking portion is not perpendicular to the swinging direction. There was a risk that a load would occur.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a parking device capable of preventing a load from being generated on a protruding portion even if a parking rod is bent and shortened. is there.

The present invention according to claim 1 is a detent plate (13) having a mounting hole (15) which is rotated based on the operation of the shift lever and which is drilled perpendicularly to the rotation direction (XY direction). ,
A shaft-shaped mounting shaft portion (21a) that is rotatably inserted through the mounting hole (15) of the detent plate (13), and the mounting shaft portion (21a) along the rotation direction. A shaft-shaped main body shaft portion (21b, 21c) that is bent and extended, and at least one portion is bent, and the mounting shaft portion (21a) in the vicinity of both side openings of the mounting hole (15). And four protrusions (22a, 22b, 22c, 22d) that protrude from the outer periphery toward the radial straight line (CT1, CT2), and the protrusions (22a, 22b, 22c, 22d). A parking rod (21) attached to the detent plate (13) by sandwiching the detent plate (13) by:
A wedge (23) disposed on the main body shaft (21b, 21c) so as to be slidable in the axial direction and urged by the urging member (26) in the axial direction opposite to the mounting shaft (21a); ,
A hole (36) into which the wedge (23) can be fitted and removed based on the rotation of the detent plate (13) and the biasing force of the biasing member (26), and when the wedge (23) is inserted A parking pawl mechanism (30) having a parking pawl (22) that is pressed by the wedge (23) and meshes with the parking gear (34),
Each time the wedge (23) is fitted into and removed from the hole (36) of the parking pole mechanism (30), the attachment portion between the attachment shaft portion (21a) and the attachment hole (15) serves as a fulcrum (Z). In the parking device (1), the parking rod (21) swings with respect to a surface (S1) including at least the rotation direction (XY direction) of the detent plate (13).
The direction of the projecting portions (22a, 22b, 22c, 22d) projecting in the radial direction from the outer peripheral portion of the mounting shaft portion (21a) is fitted to the parking pole (32) of the wedge (23). The axial direction of the wedge (23) about a direction (d ') perpendicular to a linear direction (d) connecting the center (P1) of the portion and the axial center (a) of the mounting shaft portion (21a) The other axial end of the wedge (23) from a direction (e ') perpendicular to the linear direction (e) connecting the center (P2) of one end and the axis center (a) of the mounting shaft portion (21a) Direction within an angular range (for example, θ5) to a direction (f ′) perpendicular to a linear direction (f) connecting the center (P3) of the shaft and the axis center (a) of the mounting shaft portion (21a) The protrusions (22a, 22b, 22c, 22d) were formed so that
The parking apparatus (1) is characterized by the above.

In the present invention according to claim 2 , the protrusions (22a, 22b, 22c, 22d) are formed by caulking.
Lying in the parking device (1) according to claim 1, wherein.

According to a third aspect of the present invention, there is provided a detent plate (13) having an attachment hole (15) which is rotated based on an operation of a shift lever and which is drilled perpendicularly to the rotation direction (XY direction). ,
A shaft-shaped mounting shaft portion (21a) that is rotatably inserted through the mounting hole (15) of the detent plate (13), and the mounting shaft portion (21a) along the rotation direction. A shaft-shaped main body shaft portion (21b, 21c) that is bent and extended, and at least one portion is bent, and the mounting shaft portion (21a) in the vicinity of both side openings of the mounting hole (15). And four protrusions (22a, 22b, 22c, 22d) that protrude from the outer periphery toward the radial straight line (CT1, CT2), and the protrusions (22a, 22b, 22c, 22d). A parking rod (21) attached to the detent plate (13) by sandwiching the detent plate (13) by:
A wedge (23) disposed on the main body shaft (21b, 21c) so as to be slidable in the axial direction and urged by the urging member (26) in the axial direction opposite to the mounting shaft (21a); ,
A hole (36) into which the wedge (23) can be fitted and removed based on the rotation of the detent plate (13) and the biasing force of the biasing member (26), and when the wedge (23) is inserted A parking pawl mechanism (30) having a parking pawl (22) that is pressed by the wedge (23) and meshes with the parking gear (34),
Each time the wedge (23) is fitted into and removed from the hole (36) of the parking pole mechanism (30), the attachment portion between the attachment shaft portion (21a) and the attachment hole (15) serves as a fulcrum (Z). In the parking device (1), the parking rod (21) swings with respect to a surface (S1) including at least the rotation direction (XY direction) of the detent plate (13).
The direction of the projecting portions (22a, 22b, 22c, 22d) that project radially from the outer peripheral portion of the mounting shaft portion (21a) of the parking rod (21) is determined with the mounting portion as a fulcrum (Z). The parking rod (21) is in a direction (d ′) substantially perpendicular to a plane including a direction (QR direction) in which the parking rod (21) swings up and down with respect to the rotation surface (S1) of the detent plate (13). As described above, the protrusions (22a, 22b, 22c, 22d) were formed.
The parking apparatus (1) is characterized by the above.

  In addition, although the code | symbol in the said parenthesis is for contrast with drawing, this is for convenience for making an understanding of invention easy, and has no influence on the structure of a claim. It is not a thing.

According to the first aspect of the present invention, the direction of the protruding portion that protrudes in the radial direction from the outer peripheral portion of the mounting shaft portion includes the center of the portion that fits the parking pole of the wedge and the shaft center of the mounting shaft portion. Centering on the direction perpendicular to the straight line direction, the center of the axial end of the wedge from the direction perpendicular to the linear direction connecting the center of the axial end of the wedge and the axial center of the mounting shaft, and the mounting shaft Since the protruding portion is formed so as to be in a direction within an angle range up to a direction perpendicular to the linear direction connecting the axis center of the portion, the load generated in the protruding portion should be within an allowable range. Thus, the durability of the protruding portion can be improved, and thereby the durability of the parking device can be improved.

According to the second aspect of the present invention, since the protruding portion can be formed by caulking, the parking apparatus can be easily manufactured and the cost can be reduced.

According to the third aspect of the present invention, the direction of the protruding portion that protrudes in the radial direction from the outer peripheral portion of the mounting shaft portion of the parking rod is such that the parking rod is located with respect to the rotating surface of the detent plate with the mounting portion as a fulcrum. Since the projecting part is formed so as to be in a direction substantially perpendicular to the surface including the direction of swinging up and down, the load generated in the projecting part can be within an allowable range. The durability of the parking device can be improved, thereby improving the durability of the parking apparatus.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. FIG. 1 is a view showing a parking device in the P range, where (a) is a top view, (b) is a view from arrow B in (a), (c) is a view from arrow C in (b), FIGS. 2A and 2B are diagrams showing the parking device in the D range, where FIG. 2A is a top view, FIG. 2B is a view as viewed from an arrow B in FIG. 3A and 3B are diagrams showing a parking rod according to the present invention, in which FIG. 3A is a top view, FIG. 4B is a side view, FIG. 4 is an explanatory diagram for explaining an angle range of a caulking portion, and FIG. FIG. 6 is a view showing a parking rod in which a load is generated in the caulking portion, (a) is an upper view, and (b) is a side view.

  For example, an automatic transmission or a hybrid drive device mounted on a vehicle or the like includes a transmission gear mechanism (not shown), a hydraulic control device (or a motor generator), and the like, and includes a case 40 that includes them. In the case 40, a parking gear 34 is provided on the output shaft of the automatic transmission or the hybrid drive device connected to the drive wheels.

  As shown in FIGS. 1A to 1C, the parking device 1 according to the present invention includes a detent portion 10, a parking rod portion 20, and a parking pole mechanism 30, and the detent portion 10 includes: For example, it is arranged at a predetermined part of the case 40 corresponding to a manual valve for changing the shift position of the hydraulic control device. The parking pawl mechanism 30 has a parking pawl 32 that meshes with the parking gear 34, which will be described in detail later, and is disposed at a predetermined portion of the case 40 corresponding to the parking gear 34.

  Next, the parking apparatus 1 will be described in detail with reference to the drawings. For example, a manual shaft 11 is connected to the detent portion 10 by driving (mechanically or electrically) a shift lever provided in a driver's seat (not shown) and rotated based on a selected position of the shift lever. Provided on the outer peripheral side of the manual shaft 11 is a sleeve 12 that is non-rotatably fitted by keys 19a and 19b. On the outer peripheral side of the sleeve 12, a detent plate 13 that is fixed so as not to rotate by a key 12a is disposed.

  As shown in FIG. 1A, the detent plate 13 has holes 13P, 13R, 13N, 13D, and 13S corresponding to the shift positions on the outer peripheral side, and these holes 13P, 13R, and 13N. , 13D, 13S, for example, a detent lever 14 attached to the case 40 is elastically biased and engaged. That is, when the selection position of the shift lever (not shown) is selected in the P (parking) range, R (reverse) range, N (neutral) range, D (drive) range, or S (second) range, The shaft 11 is rotationally driven in the direction of the arrow XY, the detent plate 13 is rotationally driven in the direction of the arrow XY (the rotational direction) along the rotational surface S1, and the detent lever 14 is sequentially in the hole 13P. , 13R, 13N, 13D, and 13S, the rotation angle of the detent plate 13 is positioned.

  In addition, a mounting hole 15 is formed in a substantially intermediate portion in the radial direction of the detent plate 13 so as to penetrate the detent plate 13. The mounting hole 15 is formed in such a shape that a mounting shaft portion 21a of a parking rod 21 to be described later is inserted through and attached, that is, a groove portion through which caulking portions 22c and 22d to be described later pass during manufacturing assembly. 15a and 15b, and has an inner diameter matching the outer diameter of the mounting shaft portion 21a.

  The parking rod portion 20 includes a parking rod 21 including a mounting shaft portion 21a, a first main body shaft portion 21b, and a second main body shaft portion 21c, and a wedge 23 slidably disposed on the parking rod 21; A spring (biasing member) 26 for biasing the wedge 23, a retaining member 25 for retaining the wedge 23, and projections 27a and 27b for receiving the reaction force of the spring 26 are configured. .

  As shown in FIG. 1B, the parking rod 21 has an attachment shaft portion 21a that is inserted into the attachment hole 15 of the detent plate 13 and is formed in an axial shape centered on the shaft center a. The first main body shaft portion 21b and the second main body shaft portion 21c are extended from the mounting shaft portion 21a at an angle θ2 substantially perpendicular to the portion 21a, and are axially centered on the shaft center b and the shaft center c. Is formed. As shown in FIG. 1A, the first main body shaft portion 21b and the second main body shaft portion 21c are bent at an angle θ1 at the intersection of the shaft center b and the shaft center c. The mounting hole 15 of the detent plate 10 is aligned with the fitting hole 36 of the parking pole 30 which will be described in detail later.

  A crown-shaped retaining member 25 is fixed to the distal end portion of the second main body shaft portion 21c, and a wedge 23 is slidably disposed so as to be retained by the retaining member 25. Further, the spring 26 is contracted between the wedge 23 and the above-described protrusions 27a and 27b, that is, the wedge 23 is always urged in the direction of the arrow W. The wedge 23 has a sleeve portion 23c having substantially the same outer diameter as that of the retaining member 25, a first taper portion 23b having a relatively large slope extending from the sleeve portion 23c to the outer diameter side, and the first taper. The second taper portion 23a is provided with a second taper portion 23a that extends to the outer diameter side from the portion 23b and has a relatively small inclination.

  The parking pole mechanism 30 includes a fitting portion 31 that forms a fitting hole 36 into which the parking pole 21 and the wedge 23 are inserted and fitted, and a support shaft 33 as shown in FIG. A parking pole 32 that is rotatably attached is provided.

  As shown in FIGS. 1A to 1C, the fitting portion 31 is integrally fixed to the substantially annular fitting portion main body 31a forming the fitting hole 36 and the fitting portion main body 31a. It comprises flange portions 31b and 31c. The fitting hole 36 formed in the fitting portion main body 31a is formed in a shape substantially corresponding to the shape of the wedge 23, and a tapered portion 36a that leads in the center direction when the wedge 23 is inserted, and the wedge And a pressure receiving portion 36b for receiving a reaction force for pressing and driving the parking pole 32 when 23 is inserted and fitted. Further, when the wedge 23 and the parking rod 21 are inserted and fitted into the fitting hole 36, the leading end portion of the parking rod 21 (and the retaining portion 25 and the sleeve portion 23 c) are fitted to the fitting portion main body 31. An escape hole 31e is formed so as not to interfere.

  As shown in FIG. 1C, the flange portions 31b and 31c have bolt holes 31d and 31e. On the other hand, the case 40 is also provided with a bolt hole 40a (see FIG. 2B) and a bolt hole (not shown), that is, the fitting portion 31 is fixed to the case 40 with bolts 41 and 42. The case 40 also has a relief hole 40b formed in a portion corresponding to the above-described relief hole 31e. When the wedge 23 and the parking rod 21 are inserted and fitted into the fitting hole 36, the parking rod The retaining portion 25 fixed to the tip portion of 21 is prevented from interfering.

  As shown in FIG. 1C, the parking pole 32 has a support hole 32b into which a support shaft 33 fixed to the case 40 is inserted, and is attached so as to be rotatable in the arrow KL direction. ing. A tooth tip 32 a that meshes with a tooth groove 34 b formed between the teeth 34 a of the parking gear 34 is formed at the tip of the parking pole 32 on the parking gear 34 side. A contact surface 32c with which the wedge 23 abuts is formed on the other end side of the parking pole 32. The parking pole 32 is always urged by a spring (not shown) or the like in the direction of arrow K in FIG.

  In the parking apparatus 1 configured as described above, the mounting shaft portion 21c of the parking rod 21 has a shaft center of the mounting shaft portion 21c (in the vicinity of both side openings of the mounting hole 15 of the detent plate 13). Center) Four caulking portions 22a, 22b, 22c, and 22d formed by caulking the thick portion so as to protrude outward from the radial direction from a are provided, and these four caulking portions ( The parking rod 21 is attached to the detent plate 13 by sandwiching the detent plate 13 by the protruding portions) 22a, 22b, 22c, and 22d.

  Next, the operation of the parking apparatus 1 will be described. When the above-mentioned shift lever is selected and operated in the P range, as shown in FIGS. 1A to 1C, the detent plate 13 is controlled to rotate in the direction of the arrow XY by the rotation drive of the manual shaft 11. When the detent lever 14 is engaged with the hole 13P of the detent plate 13, the detent plate 13 is positioned.

  Then, the parking rod 21 attached to the attachment hole 15 of the detent plate 13 is positioned with respect to the arrow V-W direction, and the parking rod 21 is inserted toward the fitting portion 30 fixed to the case 40. The At this time, if the positions of the teeth 34a of the parking gear 34 and the tooth tips 32a of the parking pole 32 shown in FIG. 1 (c) overlap and contact each other, the parking pole 34 cannot rotate. The pole 34 does not move in the direction of the arrow S shown in FIG. 1B, and the wedge 23 slides on the parking rod 21 in the direction of the arrow V against the urging force of the spring 26 and is in a retracted state.

  Further, for example, when the drive wheel rotates slightly, the position of the tooth groove 34b of the parking gear 34 and the tooth tip 32a of the parking pole 32 shown in FIG. 1C overlap, and the parking pole 32 meshes with the parking gear 34. As shown in FIG. 1B, the parking pole 34 moves in the direction of arrow S, and the wedge 23 slides on the parking rod 21 in the direction of arrow W due to the bias of the spring 26, so that the wedge 23 is fitted. It is fitted into the joint hole 36. In this state, except that the parking rod 21 is pulled out in the direction of the arrow V, the wedge 23 is not pulled out from the fitting hole 36, that is, until the shift lever is selected and operated outside the P range, The state where the parking pole 32 is engaged is maintained.

  On the other hand, when the shift lever is selected from the P range to a range other than the P range, for example, the D range, the detent plate 13 is moved by the rotation of the manual shaft 11 as shown in FIGS. The detent plate 13 is positioned by the rotation being controlled in the direction of the arrow X and the detent lever 14 being engaged with the hole 13D of the detent plate 13.

  Then, the parking rod 21 attached to the attachment hole 15 of the detent plate 13 is positioned at the position of the D range moved in the arrow V direction, and the parking rod 21 is separated from the fitting portion 30 fixed to the case 40. In this way, the wedge 23 is removed from the fitting hole 36. Then, the parking pawl 34 is rotated in the direction of the arrow T shown in FIG. 2B, that is, the direction of the arrow K shown in FIG. The meshing state is released.

  At this time, the distal end portion of the parking rod 21 is not completely removed from the fitting hole 36, that is, the sleeve portion 23 c having a small diameter, the retaining portion 25, or the distal end of the second main body shaft portion 21 c of the parking rod 21. The portion is caught in the engagement hole 36. However, the parking rod 21 moves in the direction of the arrow MN shown in FIG. 2A and particularly the rotation of the detent plate 13 within a range where the tip of the parking rod 21 is caught in the engagement hole 36. It becomes a state in which the head can be swung around the fulcrum Z in the direction of the arrow QR shown in FIG.

  Here, the direction (angle) in which the four caulking portions 22a, 22b, 22c, and 22d are formed, that is, the caulking direction will be described in detail. For example, as shown in FIG. 6A, a straight line connecting the axis center a of the engagement shaft portion 21a of the parking rod 21 and the center P1 of the wedge 23 on the most distal side, that is, the parking rod 21 is a fulcrum. The angle θ4 of the center lines CT1 ′ and CT2 ′ of the caulking portions 22a, 22b, 22c and 22d is not an appropriate angle with respect to the center line d when swinging around Z (for example, about 60 ° in the figure). 6 (b), when the parking rod 21 swings in the direction of the arrow QR, the caulking portions 22a, 22b, 22c, and 22d are pressed against the detent plate 13, and the stress of the load As a result, the durability of the caulking portions 22a, 22b, 22c, and 22d may be adversely affected.

  In particular, as shown in FIG. 4, the direction in which the caulking portions 22a, 22b, 22c, and 22d are formed is a direction perpendicular to the first main body shaft portion 21b, that is, a direction b ′ perpendicular to the axis b. However, since it is not perpendicular to the center line d when the parking rod 21 swings, when the parking rod 21 swings, load stress is generated in the caulking portions 22a, 22b, 22c, and 22d, resulting in durability. There is a risk of adversely affecting sex.

  Therefore, in the parking apparatus 1 according to the present invention, as shown in FIG. 3A, the center line CT1 of the caulking portions 22a, 22b, 22c, 22d with respect to the center line d when the parking rod 21 swings, The angle θ4 of CT2 is in a direction that is within a predetermined angle range centering on the vertical direction d ′ shown in FIG. 4, and is preferably substantially vertical (that is, includes the QR direction in which the parking rod 21 swings). The caulking portions 22a, 22b, 22c, and 22d are formed so as to be in a direction substantially perpendicular to the surface. Thus, as shown in FIG. 3B, even if the parking rod 21 swings in the direction of the arrow QR, the caulking portions 22a, 22b, 22c, and 22d are parallel to the center lines CT1 and CT2. Therefore, the durability of the caulking portions 22a, 22b, 22c, and 22d can be improved without causing much load stress.

  Incidentally, the angle at which the parking rod 21 swings varies depending on the length l of the parking rod 21 (see FIG. 4). That is, since the head is swung within the range of being caught in the fitting hole 36, the swing angle becomes larger as the parking rod 21 is shortened because the downsizing is required. As shown in FIG. 5, these relationships indicate that the length of the parking rod shortened (for example, 120 mm) as required in the present invention as compared with the length of the conventional parking rod (for example, 200 mm). ˜50 mm), it is within an angle range (for example, 80 ° to 100 °) indicated by θ6 in the figure, with the angle perpendicular to the center line d when the parking rod 21 swings as the center. In other words, if the predetermined angle range centering on the above-described vertical direction d ′ is within the angle range θ6 determined by the length l of the parking rod 21, the load is within the allowable range, and the caulking portions 22a, 22b, 22c, 22d It is possible to prevent the durability from being adversely affected.

  In addition, as described above, if the angle of the crimping portions 22a, 22b, 22c, and 22d is within the angle range θ6, the durability is sufficient, but the mounting shaft portion 21a of the actual parking rod 21 is crimped and the crimping portions 22a, 22b, When forming 22c and 22d, it is preferable to determine an angle with respect to the part of the parking rod 21 (that is, as a target). Therefore, as shown in FIG. 4, it suffices if it is within an angle range θ5 perpendicular to the center P2 at one end of the wedge 23 and the center P3 at the other end of the wedge 23. That is, the direction in which the caulking portions 22a, 22b, 22c, and 22d are formed is changed from the direction e ′ perpendicular to the straight line e connecting the center P2 at one end of the wedge 23 and the axis center a of the mounting shaft portion 21a to the wedge 23. The parking rod 21 always swings in a direction (approximately 2 °) up to a direction f ′ perpendicular to the straight line f connecting the center P3 of the other end of the shaft and the shaft center a of the mounting shaft portion 21a. The caulking portions 22a, 22b, 22c, and 22d are formed within an angle range that includes a direction d ′ perpendicular to the center line d and the angle range θ6 that is sufficient for the durability as shown in FIG. can do.

  As described above, according to the parking device 1 according to the present invention, the direction of the caulking portions 22a, 22b, 22c, and 22d that protrude in the radial direction from the outer peripheral portion of the mounting shaft portion 21a is fitted to the parking pole 32 of the wedge 23. The caulking portions 22a, 22b are in a direction within a range of a predetermined angle θ6 with a direction d ′ perpendicular to the linear direction d connecting the center P1 of the mating portion and the axis center a of the mounting shaft portion 21a as the center. 22c and 22d are formed, the load generated in the caulking portions 22a, 22b, 22c and 22d can be within an allowable range, and the durability of the caulking portions 22a, 22b, 22c and 22d is improved. As a result, the durability of the parking apparatus 1 can be improved.

  Furthermore, the direction in which the load of the caulking portions 22a, 22b, 22c, and 22d is within the allowable range is perpendicular to the linear direction e that connects the center P2 of the axial end of the wedge 23 and the axial center a of the mounting shaft portion 21a. The caulking portion is within the angular range θ5 from the straight direction e ′ to the direction f ′ perpendicular to the linear direction f connecting the center P3 of the other axial end of the wedge 23 and the axial center a of the mounting shaft portion 21a. The load generated in 22a, 22b, 22c, and 22d can be set within an allowable range.

  Further, since the caulking portions 22a, 22b, 22c, and 22d can be easily formed by caulking, the parking apparatus 1 can be easily manufactured and the cost can be reduced.

  In addition, the direction of the caulking portions 22a, 22b, 22c, and 22d that protrude in the radial direction from the outer peripheral portion of the mounting shaft portion 21a is a plane that includes the QR direction, which is the direction in which the parking rod 21 swings. Since the caulking portions 22a, 22b, 22c, and 22d are formed so as to be in a substantially vertical direction d ′, the load generated in the caulking portions 22a, 22b, 22c, and 22d can be within an allowable range. The durability of the caulking portions 22a, 22b, 22c, and 22d can be improved, whereby the durability of the parking apparatus 1 can be improved.

  In the embodiment according to the present invention described above, the parking apparatus 1 has been described as an example in which the P range, the R range, the N range, the D range, and the S range are switched depending on the rotation position of the detent plate 13. However, the present invention is not limited to this, and the number of travel ranges may be any number (for example, there is no S range, or there is an L range on the contrary). The present invention can be applied even if only the N range is switched.

  In the present embodiment, the case where the main body shaft portion of the parking rod 21 is bent at only one place has been described as an example. However, the present invention is not limited to this, and the parking rod 21 is bent at a plurality of places. That is, it may be a complicated shape.

  Furthermore, in the present embodiment, the description has been given of the case where the thickened portion of the outer peripheral portion of the mounting shaft portion 21a of the parking rod 21 is crimped to form the crimped portions 22a, 22b, 22c, 22d. Any shape may be used as long as it protrudes in the radial direction from the outer peripheral portion of the mounting shaft portion 21 a and sandwiches the detent plate 13.

  Further, in the present embodiment, the parking apparatus 1 according to the present invention has been described as being mounted on an automatic transmission, a hybrid drive apparatus, etc., but these automatic transmissions and hybrid drive apparatuses are, for example, stepped transmission type Any type of automatic transmission, continuously variable automatic transmission (so-called CVT), split-type hybrid drive device, parallel-type hybrid drive device, series-type hybrid drive device, etc. The parking apparatus 1 can be applied. Furthermore, the parking device 1 of the present invention can be applied to any device as long as it has a parking device with or without a transmission, such as an electric vehicle. It is.

It is a figure which shows the parking apparatus in the P range, (a) is a top view, (b) is a B arrow view of (a), (c) is a C arrow view of (b). It is a figure which shows the parking apparatus in the D range, (a) is a top view, (b) is a B arrow view of (a), (c) is a C arrow view of (b). It is a figure which shows the parking rod which concerns on this invention, (a) is an upper side view, (b) is a side view. Explanatory drawing explaining the angle range of a crimping part. The figure which shows the tolerance | permissible_range of the load which arises in a crimping part. It is a figure which shows the parking rod which a load produces in a crimping | crimped part, (a) is an upper side view, (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Parking apparatus 13 Detent board 15 Mounting hole 21 Parking rod 21a Mounting shaft part 21b Main body shaft part (1st main body shaft part)
21c Body shaft part (second body shaft part)
22 Parking pole 22a Protruding part (crimping part)
22b Protrusion (crimping part)
22c Protrusion (crimping part)
22d Protrusion (crimping part)
23 Wedge 26 Biasing member (spring)
30 Parking pole mechanism 34 Parking gear 36 Hole (fitting hole)
P1 Wedge center P2 Wedge axial center P3 Wedge axial other end S1 Rotating direction (rotating surface)
Z fulcrum

Claims (3)

A detent plate that is rotated based on the operation of the shift lever and has a mounting hole that is drilled perpendicular to the direction of rotation;
A shaft-shaped mounting shaft portion that is rotatably inserted through the mounting hole of the detent plate, and is bent and extended with respect to the mounting shaft portion along the rotation direction, and at least one portion is bent. The formed shaft-shaped main body shaft portion, and projecting portions that project from the outer peripheral portion of the mounting shaft portion toward the radial straight line at four locations in the vicinity of the opening portions on both sides of the mounting hole. A parking rod attached to the detent plate by sandwiching the detent plate by the protruding portion;
A wedge disposed in the body shaft portion so as to be slidable in the axial direction, and urged by an urging member to the side opposite to the mounting shaft portion in the axial direction;
A hole that allows the wedge to be fitted and removed based on the rotation of the detent plate and the urging force of the urging member, and parking that is driven by the wedge and meshes with the parking gear when the wedge is fitted. A parking pole mechanism having a pole, and
Each time the wedge is fitted into and removed from the hole of the parking pole mechanism, the parking rod is at least on the surface including the rotation direction of the detent plate with the mounting portion of the mounting shaft and the mounting hole as a fulcrum. In the parking device that swings
The direction of the protruding portion that protrudes in the radial direction from the outer peripheral portion of the mounting shaft portion is in a linear direction that connects the center of the portion of the wedge that fits the parking pole and the shaft center of the mounting shaft portion. The center of the other end in the axial direction of the wedge and the mounting shaft from the direction perpendicular to the linear direction connecting the center of one end of the wedge in the axial direction and the shaft center of the mounting shaft portion. The protruding portion was formed so as to be in a direction within an angular range up to a direction perpendicular to a linear direction connecting the axis center of the portion,
The parking apparatus characterized by the above-mentioned. The protrusion is formed by caulking,
The parking apparatus according to claim 1. A detent plate that is rotated based on the operation of the shift lever and has a mounting hole that is drilled perpendicular to the direction of rotation;
A shaft-shaped mounting shaft portion that is rotatably inserted through the mounting hole of the detent plate, and is bent and extended with respect to the mounting shaft portion along the rotation direction, and at least one portion is bent. The formed shaft-shaped main body shaft portion, and projecting portions that project from the outer peripheral portion of the mounting shaft portion toward the radial straight line at four locations in the vicinity of the opening portions on both sides of the mounting hole. A parking rod attached to the detent plate by sandwiching the detent plate by the protruding portion;
A wedge disposed in the body shaft portion so as to be slidable in the axial direction, and urged by an urging member to the side opposite to the mounting shaft portion in the axial direction;
A hole that allows the wedge to be fitted and removed based on the rotation of the detent plate and the urging force of the urging member, and parking that is driven by the wedge and meshes with the parking gear when the wedge is fitted. A parking pole mechanism having a pole, and
Each time the wedge is fitted into and removed from the hole of the parking pole mechanism, the parking rod is at least on the surface including the rotation direction of the detent plate with the mounting portion of the mounting shaft and the mounting hole as a fulcrum. In the parking device that swings
The direction of the protruding portion that protrudes radially from the outer peripheral portion of the mounting shaft portion of the parking rod swings up and down with respect to the rotation surface of the detent plate with the mounting portion as a fulcrum. The protrusion is formed so as to be in a direction substantially perpendicular to the plane including the direction.
The parking apparatus characterized by the above-mentioned.

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