JP2001341619A - Parking lock device for transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce size of a transmission case for forming the whole body of a transmission compact while securing necessary space in the transmission case in a parking lock device for the transmission. SOLUTION: On a wedge shaft, a wedge and a spring for energizing the wedge are disposed in order from the engagement position side with a parking lever on one end side, and on the transmission case, a storage part for storing the other end side of the wedge shaft at least is provided to be swollen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a parking lock device for a transmission, and more particularly to a parking lock device for a transmission that locks wheels when the vehicle is parked.

[0002]

2. Description of the Related Art A vehicle is provided with a manual transmission or an automatic transmission in order to convert the power of an engine as required according to running conditions and to take out the power.

[0003] The automatic transmission is provided with a parking lock device that locks the wheels by restraining the drive shaft in the transmission case when the selector is operated to the parking range "P".

In the parking lock device for an automatic transmission, a parking gear fixed to a drive shaft is provided in a transmission case, and a parking pawl having a claw portion meshable with the parking gear is provided. A wedge shaft that moves axially so that the pawl portion of the pawl meshes with the parking gear is provided, and a wedge that contacts the parking pawl and a wedge biasing spring that biases the wedge are fitted on the wedge shaft. , A parking lever that engages an end portion of the wedge shaft, a rotatable manual plate is provided so as to link to the parking lever, and a select cable connected to the manual plate and a select cable is connected to the transmission case. Some are provided outside.

That is, in a parking lock device of an automatic transmission, as shown in FIGS. 16 to 18, when a driver performs a parking operation in a vehicle, a parking gear fixed to a drive shaft in a transmission case is connected to a parking gear. When the driver operates the selector to the parking range "P", the select cable 10 connected to the selector is mechanically fixed to prevent the vehicle from inadvertently moving.
2 rotates the select lever 104, which is exposed to the outside of the transmission case, in the direction of arrow A about the plate shaft 106 (see FIG. 16).
6 is rotated by the same angle as the select lever 104, and the parking lever 1 linked to the manual plate 108 is rotated.
10 rotates around a lever shaft 112, and engages with the tip side of the parking lever 110 to move the wedge shaft 118 on which the wedge 114 and the wedge biasing spring 116 are fitted in the axial direction in the direction of arrow B. When the wedge 114 is moved by pushing in the axial direction together with the wedge shaft 118 (see FIG. 17), the wedge 114 moves so as to ride on the supporter 120, and the wedge 114 moves. Supporters 12
0, the displacement required for pushing the parking pole 122 occurs, and the parking pole 122 pushed on the back of the wedge 114 is turned around the pole shaft 126 against the urging force of the pawl urging spring 124. The pawl 122 of the parking pole 122 rotates in the direction of arrow C.
A meshes with the tooth portion 128A of the parking gear 128,
The drive shaft 130 is mechanically restrained, and the wheels are locked in a parking lock state.

Further, as such a parking lock device for an automatic transmission, for example, Japanese Patent Application Laid-Open No. 7-9960, Japanese Utility Model Application Laid-Open No. 2-17428, and Japanese Patent Application Laid-Open No. 7-1446.
No. 16, JP-A-4-185558. Japanese Unexamined Patent Publication No. 7-9960 discloses that a lever pin engaged with a parking groove formed in a detent plate includes a mandrel integrated with a parking lever, and a roller rotatably attached to the mandrel. And the outer peripheral surface of the roller is rolled along the parking groove. Japanese Unexamined Utility Model Publication No. 2-17428 discloses a device provided with a blocking means for blocking the movement of the parking rod cam during parking, and a release means for releasing the blocking state of the blocking means when the brake pedal is depressed. . A tapered conical surface for rotating the parking pole so as to be engaged with the parking gear is formed on the sleeve that is loosely fitted with a radial gap on the park rod, and a counteracting force acting on the sleeve from the parking pole is formed. A guide that guides the sleeve while receiving the force is provided in the transmission case. What is described in JP-A-4-185558 is
A parking mechanism is provided in a portion of the transmission case where the power take-off mechanism is provided.

[0007]

However, conventionally, in a parking lock device of an automatic transmission, the other end of a wedge shaft is provided on the other end of an engagement portion with a parking lever which is largely separated from a front end wedge which is one end. Since the wedge urging spring and the wedge are sequentially disposed from the vehicle, a space corresponding to the length of the wedge urging spring is required between the parking gear and the parking lever. It could not be located near the gears, leading to an increase in size. In addition, since many other components of the parking lock device are present around the parking lever, the external dimensions of the automatic transmission are increased, resulting in an increase in size. Furthermore, since the wedge biasing spring is installed on the wedge shaft, the parking lever portion of the transmission case bulges, so that the transmission case itself becomes large, and thus the entire automatic transmission becomes large. There was an inconvenience.

[0008]

Therefore, in order to eliminate the above-mentioned disadvantages, the present invention provides a parking gear fixed to a drive shaft in a transmission case, and a pawl portion meshable with the parking gear is provided. A parking pole is provided, and a wedge shaft that moves axially so that a pawl portion of the parking pole meshes with the parking gear is provided. The wedge shaft urges a wedge contacting the parking pole and the wedge. A wedge biasing spring is fitted and provided, a parking lever is provided for engaging an end portion of the wedge shaft, a rotatable manual plate is provided in link with the parking lever, and connected to the manual plate. A transmission lever provided with a select lever connected to a select cable outside the transmission case. In the glock device, the wedge shaft is provided with the wedge and the wedge biasing spring sequentially from an engagement portion side of the one end with the parking lever, and the transmission case includes at least the wedge shaft. A housing portion for housing the other end is provided so as to protrude.

[0009]

According to the present invention, the wedge and the wedge biasing spring are sequentially arranged on the wedge shaft from the side of the engagement portion with the parking lever at one end.
The parking lever can be arranged near the parking gear, so that the transmission case can be made compact and compact, so that the transmission can be downsized. With respect to the wedge shaft, the transmission case is provided with a swelling portion for housing the other end, which is the front end side of the wedge shaft, so that a portion of the transmission case may be swelled. ,
Accordingly, the size of the transmission case can be reduced while securing the necessary space in the transmission case, and the entire transmission can be made compact.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; 1 to 13 show a first embodiment of the present invention.
It shows an embodiment. 1 and 7, reference numeral 2 denotes a drive shaft provided in a transmission case 4 of an automatic transmission (not shown) for an electric vehicle, and reference numeral 6 denotes a parking lock device.

In this parking lock device 6,
As shown in FIGS. 1 to 4, a parking gear 8, a parking pole 10, a supporter 12, a wedge shaft 14, a wedge 16, a wedge biasing spring 18, a parking lever 20, an assist lever 22, a lever Shaft 24, manual plate 26, plate shaft 28
, A select lever 30 and a select cable 32. Also, this parking lock device 6
Are attached to the transmission case 4 collectively.

The parking gear 8 is fixed to the drive shaft 2 in the transmission case 4 and has a plurality of teeth 8A on the outer peripheral surface.

The parking pole 10 is fixed to a pole shaft 34 whose base end is oriented substantially parallel to the drive shaft 2 and has a claw 10A at the front end that meshes with the teeth 8A of the parking gear 8. The pawl 10A is biased by a pawl biasing spring (not shown) in a direction in which the pawl portion 10A is separated from the tooth portion 8A of the parking gear 8, and the parking pole 10 is disposed substantially orthogonal to the pole shaft 34. Is done.

The supporter 12 has a wedge support inner surface 12A.
And supports the wedge 16.

The wedge shaft 14 is arranged so as to be substantially parallel to the pole shaft 34. This wedge shaft 14 has
As shown in FIG. 2, a wedge locking step 36 is formed,
As a result, a large-diameter shaft portion 38 at one end and a small-diameter shaft portion 40 at the other end are formed.

The wedge 16 is formed in a wedge shape,
The wedge shaft 14 is fitted from the shaft small diameter portion 40 side, and one end surface is provided in contact with the wedge locking step 36.

The wedge biasing spring 18 is fitted from the small diameter portion 40 side of the wedge shaft 14, one end is provided in contact with the other end surface of the wedge 16, and the other end is formed at the end of the small diameter portion 40. It is held by a spring fixing pin 42 attached in the direction. This spring fixing pin 4
2 has a length L larger than the outer diameter D1 of the wedge biasing spring 18.

A yoke 44 is fixed to an end portion of the large-diameter portion 38 at one end of the wedge shaft 14 with a yoke mounting pin 46. The yoke 44 is integrally provided with an engagement shaft portion 48 protruding in the radial direction (vertical direction).

The parking lever 20 has a proximal end fixed to the lever shaft 24 and a distal end side provided with an engagement shaft 4 of a yoke 44.
The wedge shaft 14 has an engagement hole 50 that engages with the wedge shaft 8.

The assist lever 22 has a base end integrated with the base end of the parking lever 20 and is fixed to the lever shaft 24, is formed in a slightly curved shape, and has a lever pin 52 on a front end surface. ing.

The manual plate 26 has a base end fixed to one end of a plate shaft 28 and is formed in a fan shape.
The escape groove 54 and the radial parking groove 56 corresponding to the parking position are formed as L-shaped long grooves so as to engage with the lever pin 52.

The select lever 30 has a base end fixed to the other end of the plate shaft 28 and a cable mount 5 attached to the distal end.
8 is provided. The cable attachment portion 58 is provided with a select cable 32 connected to a selector (not shown).

As shown in FIGS. 7 to 13, the transmission case 4 has a hole-shaped housing portion 60 for housing at least the other end of the wedge shaft 14, and a swelling portion partially bulging outward. 62. The accommodation section 60 has a hole step 6
4, a large-diameter accommodation portion 66 having an inner diameter D2 and a length N1 where the wedge 16 is located, and a wedge biasing spring 18
Is located inside diameter D3 smaller than inside diameter D2 and length N
And the two small diameter portions 68. The supporter 12 that supports the wedge 16 is provided in the large-diameter accommodation portion 66.

That is, an engagement hole 50 is formed at the tip end of the parking lever 20 which is one of the wedge shaft 14 and the parking lever 20, and the wedge shaft which is the other one of the wedge shaft 14 and the parking lever 20. An engagement shaft 48 is provided at one end of the wedge shaft 14 via a yoke 44. The wedge shaft 14 and the parking lever 20 are inserted by inserting the engagement shaft 48 into the engagement hole 50.
Are provided in engagement with each other. Accordingly, the wedge shaft 14 is provided with the wedge 16 and the wedge biasing spring 18 sequentially from the engagement portion of the large-diameter portion 38 at one end with the parking lever 20.

The rotation restricting portions 70, 70 for restricting the rotation of the wedge shaft 14 about the axis 48C of the engagement shaft portion 48 as the center of rotation, the rotation restricting inner surface portions 68A opposing the small diameter portion 68 of the housing. , 68A are the storage small diameter portions 68 of the storage portion 60.
Will be provided.

Further, as movement restricting portions 72, 72 for restricting the movement of the wedge shaft 14 in the axial direction of the engaging shaft portion 48,
Movement-restricting inner surface portions 68B, 6 facing each other at the storage small-diameter portion 68.
8B is provided in the small-diameter accommodation section 68 of the accommodation section 60.

Accordingly, the small-diameter housing portion 68 is provided with the wedge shaft 1.
The wedge shaft 14 has a function of preventing rotation of the wedge shaft 14 and a function of preventing rotation of the wedge shaft 14. This allows the wedge 16 to approach the wedge 16 on the supporter 12 from the correct direction.

Further, the wedge shaft 14 is provided with a spring regulating pin 42 on the other end side of the wedge biasing spring 18 as a contact portion 74 to the rotation regulating portion 70 or the movement regulating portion 72. Will be.

The wedge shaft 14 fitted with the wedge 16 and the wedge biasing spring 18 is attached to the yoke 4.
4 and the upper surface of the parking lever 20 are in surface contact with each other, and the engaging shaft portion 48 and the engaging hole 50 are male / female-fitted. Is established.

Next, the operation of the first embodiment will be described.

When the driver operates the selector to the parking range "P", as shown in FIG. 1, the select cable 32 connected to the selector moves the select lever 30 exposed outside the transmission case 4 to the outside. Is rotated in the direction of arrow A about the plate shaft 28, and the manual plate 26 connected to the plate shaft 28 is rotated.
Rotates at the same angle as the select lever 30, and the parking lever 20 linked to the manual plate 26
Pivots, pulls the wedge shaft 14 engaged with the tip side of the parking lever 20 in the direction of arrow B to move in the axial direction, and the wedge 16 fitted on the wedge shaft 14 14, the parking pole 10 pushed on the rear surface of the wedge 16 rotates in the direction of arrow C about the pole shaft 34, and the pawl 10 A of the parking pole 10 moves to the parking gear 8. , And mechanically restrains the drive shaft 2, sets a parking lock state, and locks the wheels.

In this embodiment, the wedge 16 and the wedge biasing spring 18 are attached to the wedge shaft 14 from the side of the one end where the parking lever 20 is engaged.
Are sequentially arranged, the parking lever 20 can be arranged near the parking gear 8, and thus the transmission case 4 can be made compact and compact, and the automatic transmission can be downsized. In addition to this, it is possible to prevent the parking pole 10 from being insufficiently pushed by the required lever ratio.

Further, with respect to the wedge shaft 14 projecting in place of the parking lever 20, the housing case 60 for housing the other end, which is the tip end of the wedge shaft 14, is expanded in the transmission case 4. Since it is provided so as to protrude, a part of the transmission case 4 may be swelled, thereby reducing the overall size of the transmission case 4 while securing necessary space in the transmission case 4, The entire automatic transmission can be made compact.

An engagement hole 50 is formed in the parking lever 20 which is one of the wedge shaft 14 and the parking lever 20, and the wedge shaft 14 which is the other one of the wedge shaft 14 and the parking lever 20 is formed in the parking lever 20. An engagement shaft 48 is provided via the yoke 44, and the wedge shaft 14 and the parking lever 20 are engaged by inserting the engagement shaft 48 into the engagement hole 50, and the shaft of the engagement shaft 48 is Wedge axis 1 with center of rotation 48C
As the rotation restricting portion 70 for restricting the rotation of the rotation portion 4, the rotation restricting inner surface portions 68 </ b> A, 68 </ b> A facing the small diameter portion 68 are provided in the small diameter portion 68 of the storage portion 60.
The wedge shaft 14 holds the wedge 1 when the parking lock is on.
6 is sandwiched between the supporter 12 and the parking pole 10, and the position is determined. The position is not determined except at the time of parking lock. In this embodiment, the position is determined without using any special parts. The number of parts can be reduced, the configuration can be simplified, and the cost can be reduced. In addition to the parking lock, the wedge shaft 14
Since the other end of the wedge shaft 14 is configured to penetrate deeply into the small accommodation portion 68, the rotation of the wedge shaft 14 can be easily regulated.

Further, as a movement restricting portion 72 for restricting the movement of the wedge shaft 14 in the axial direction of the engagement shaft portion 48, the rotation restricting inner surface portions 68 B, 68 B opposed by the storing small diameter portion 68 include the storing small diameter of the storing portion 60. Since the wedge shaft 14 is provided in the portion 68, the wedge shaft 14 can be restricted from moving in the axial direction in a direction (upward) in which the engagement shaft portion 48 comes out of the engagement hole 50, and a special component (an engagement shaft It is possible to prevent detachment without requiring a component such as a circlip attached to the portion 48, and the assembly can be facilitated. Since the other end of the wedge shaft 14 is deeply inserted into the small-diameter housing portion 68 except when the parking lock is performed, the rotation of the wedge shaft 14 can be easily restricted. Further, the movable range of the wedge shaft 14 in the direction in which the engagement shaft portion 48 comes out of the engagement hole 50 (upward direction) (movement distance until the wedge shaft 14 comes into contact with the movement restriction portion 74) is The length of engagement with the engagement hole 50 can be made shorter.

Further, since the wedge shaft 14 is provided with a contact portion 74 to the rotation restricting portion 70 or the movement restricting portion 72 on the tip side of the wedge biasing spring 18, the wedge 16 and the wedge It is possible to prevent the urging spring 18 from abutting on the transmission case 4 and prevent breakage of components and occurrence of trouble. In addition, since the position is regulated on the distal end side of the wedge shaft 14, the regulation of the rotation can be made easier and the range of rotation of the wedge shaft 14 can be narrowed. Further, since the front end side of the wedge shaft 14 does not affect the functional components, the contact portion 74
In addition, the rotation on the transmission case 4 side and the installation of the movement restricting portions 70 and 72 can be facilitated. Furthermore, wedge 1
A spring fixing pin 42, which is a locking member for the wedge urging spring 18, is provided on the distal end side of the wedge shaft 14 with respect to the wedge urging spring 18 for urging the spring 6. The spring fixing pin 42 is provided with a wedge. Since it projects beyond the outer diameter D1 of the biasing spring 18 and comes into contact with the rotation restricting portion 70 or the movement restricting portion 72, existing components can be used, and special components and special shaft shapes can be used. And it is easy to manufacture, and the assemblability can be improved. In addition, the engagement shaft 4
The driving direction of the pin 42 for fixing the spring is perpendicular to the axial direction of 8, and the end portion of the pin 42 for fixing the spring serves as the contact portion 74, so that the rotation can be easily regulated.

In this case, the front end (the other end) of the wedge shaft 14 can be made thicker, or a contact member can be attached to the wedge shaft 14.

Since the housing portion 60 is provided with a large-diameter housing portion 66 in which the wedge 16 is located and a small-diameter housing portion 68 in which the wedge biasing spring 18 is located, the shape is adjusted to the shape of the component. Therefore, the automatic transmission can be made smaller, and the rotation restricting portion 70 or the movement restricting portion 72 can be easily configured (in this case, the accommodation small-diameter portion 68 rotates, This constitutes a movement restricting unit).

Since the supporter 12 for supporting the wedge 16 is attached to the large-diameter accommodation portion 66, the supporter 1
2, the large-diameter accommodation portion 66 and the small-diameter accommodation portion 68 are positioned,
That is, the supporter 1 uses the inner peripheral surface of the large-diameter accommodation portion 66.
2 can be positioned. In addition, the accommodation large diameter portion 66
When the small diameter portion 68 and the housing 68 are manufactured by a drill or the like, the positioning accuracy can be further improved, and the position of the hole is shifted due to a mold shift or the like at the time of manufacturing, so that problems such as contact can be prevented. Furthermore, by arranging the supporters 12 in the large-diameter accommodation portion 66, the supporters 12 can be compactly arranged, and the size of the automatic transmission can be reduced.

Further, the yoke 44, the wedge shaft 14 and the wedge 16 are simply fitted, and it is not necessary to provide the yoke 44 with a special stopper. This is the accommodation small diameter part 68
Plays a role of preventing the wedge shaft 14 from coming off. If the parking lever 20 is fixed to the wedge shaft 14 once, the wedge shaft 14 cannot come out of the yoke 44 even at the time of parking lock / release, Also,
Since the wedge shaft 14 is substantially floating, it is possible to avoid unnecessary contact of the wedge 16 and the like during traveling. Further, since the other end of the wedge shaft 14 on the leading end side is in a floating state, the transmission case 4 can be moved during traveling.
Iron powder and the like in the inside does not adhere to the wedge 16, and it is possible to prevent foreign matter from being caught in the parking lock. Further, the parking lock device 6 is provided with the transmission case 4
, It is possible to improve the assemblability.

Further, conventionally, the wedge shaft 14 is arranged so that the parking lock is applied in the pushing direction. However, in this embodiment, since the parking lock is applied in the pulling direction, the wedge shaft 14 is provided. The wedge shaft 14 can be reduced in diameter without bending or the like. Further, the tip end side of the wedge shaft 14 may have a diameter corresponding to the wedge biasing spring 18, and the diameter of the wedge shaft 14 can be further reduced. Further, since the portion requiring strength between the wedge 16 and the engagement portion of the parking lever 20 has a large diameter, the shaft large-diameter portion 38 can be used as a stopper of the wedge 16. Also, the shape of the wedge shaft 14 is simplified, and the wedge 16
And the wedge biasing spring 18 can be easily assembled.

FIG. 14 shows a special configuration of the present invention, and shows a second embodiment.

In the following embodiments, the parts having the same functions as those in the first embodiment will be described with the same reference numerals.

The features of the second embodiment are as follows. That is, the contact member 82 is provided on the tip end side of the wedge shaft 14. The contact member 82 includes a rotation-side / moving-side contact portion 84A that contacts the rotation-restricting portion 70 or the movement-restricting portion 72 when the tip end side of the wedge shaft 14 moves in the rotation / moving direction. 84B and 84B are provided.

According to the configuration of the second embodiment, when the other end of the wedge shaft 14 moves, this movement is regulated by the respective contact portions 84 of the contact member 82, so that the wedge shaft 14
Movement can be regulated as required.

FIG. 15 shows a special configuration of the present invention, and shows a third embodiment.

The features of the third embodiment are as follows. That is, a lever urging spring 92 for urging the parking lever 20 toward the yoke 44 to prevent the parking lever 20 from separating from the engaging shaft 48 is attached to the engagement shaft 48 of the yoke 44 with a spring mounting pin. 94
Installed with.

According to the configuration of the third embodiment, since the tip side of the parking lever 20 is always in close contact with the lower surface of the yoke 44, the parking lever 20 and the wedge shaft 14
Can be properly secured, and a smooth parking lock can be realized.

[0049]

As is apparent from the above detailed description, according to the present invention, a wedge and a wedge biasing spring are sequentially arranged on the wedge shaft from the side of the engagement portion with the parking lever at one end. With this arrangement, the parking lever can be disposed near the parking gear, so that the transmission case can be made compact and compact, and thus the transmission can be downsized. With respect to the wedge shaft that will protrude, the housing case for housing the other end, which is the front end side of the wedge shaft, is provided in the transmission case so as to protrude. The size of the transmission case can be reduced while securing necessary space in the transmission case, so that the entire transmission can be made compact.

[Brief description of the drawings]

FIG. 1 is a perspective view of a parking lock device.

FIG. 2 is a sectional view of a wedge shaft mounting part.

FIG. 3 is a partial plan view of the parking lock device when the parking lock is released.

FIG. 4 is a partial front view of the parking lock device when the parking lock is released.

FIG. 5 is a partial plan view of the parking lock device during parking lock.

FIG. 6 is a partial front view of the parking lock device at the time of parking lock.

FIG. 7 is a front view from one side of a transmission case.

FIG. 8 is a front view of a main part of FIG. 7;

FIG. 9 is a sectional view taken along line 9-9 in FIG. 8;

FIG. 10 is a rear view from the other side of the transmission case.

FIG. 11 is a sectional view taken along line 11-11 of FIG. 10;

FIG. 12 is a sectional view taken along line 12-12 of FIG. 10;

FIG. 13 is a sectional view taken along line 13-13 of FIG. 10;

FIG. 14 is a cross-sectional view in which a regulating member is provided in the second embodiment.

FIG. 15 is a front view in which a lever biasing spring is provided in the third embodiment.

FIG. 16 is a plan view illustrating rotation of a select lever at the time of parking lock in the related art.

FIG. 17 is a plan view illustrating movement of a wedge shaft in the axial direction during parking lock in the related art.

FIG. 18 is a plan view illustrating a conventional rotation of a parking pole during parking lock.

[Explanation of symbols]

 Reference Signs List 2 Drive shaft 4 Transmission case 6 Parking lock device 8 Parking gear 10 Parking pole 14 Wedge shaft 16 Wedge 18 Wedge biasing spring 20 Parking lever 26 Manual plate 30 Selector Kuber 44 Yoke 60 Storage portion 66 Large storage portion 68 Small storage diameter Part 70 Rotation restriction part 72 Movement restriction part 74 Contact part

Claims (6)

[Claims] A parking gear fixed to a drive shaft is provided in a transmission case, a parking pawl provided with a pawl capable of meshing with the parking gear is provided, and a pawl of the parking pawl is attached to the parking gear. A wedge shaft that moves axially so as to engage with the wedge shaft is provided with a wedge that contacts the parking pole and a wedge biasing spring that biases the wedge. A parking lever is provided which engages with the parking lever, and a manual plate which is rotatable in link with the parking lever is provided, and a select lever connected to the manual plate and connected to a select cable is provided outside the transmission case. In the parking lock device for a transmission, the wedge shaft has the parking lever at one end. The wedge and the wedge biasing spring are sequentially arranged from the engagement site side with the bar,
A parking lock device for a transmission, wherein a housing portion for housing at least the other end of the wedge shaft is provided in the transmission case so as to protrude. 2. An engagement hole is provided in one of the wedge shaft and the parking lever, and an engagement shaft is provided in one of the other of the wedge shaft and the parking lever. The wedge shaft and the parking lever are engaged with each other by inserting the wedge shaft into the engagement hole, and the wedge shaft is rotated around the axis of the engagement shaft portion. The parking lock device for a transmission according to claim 1, wherein a portion is provided in the housing portion. 3. An engagement hole is provided in one of the wedge shaft and the parking lever, and an engagement shaft is provided in one of the other of the wedge shaft and the parking lever. The wedge shaft and the parking lever are engaged with each other by inserting the wedge shaft into the engagement hole, and the movement restricting portion that restricts movement of the wedge shaft in the axial direction of the engagement shaft portion is accommodated in the housing. The parking lock device for a transmission according to claim 1, wherein the parking lock device is provided in a portion. 4. The wedge shaft is provided with a contact portion with the rotation restricting portion or the movement restricting portion on the other end side of the wedge urging spring.
A parking lock device for a transmission according to claim 3. 5. The transmission according to claim 1, wherein the housing portion is formed by a housing large diameter portion where the wedge is located and a housing small diameter portion where the wedge biasing spring is located. Parking lock device. 6. The parking lock device for a transmission according to claim 5, wherein a supporter for supporting the wedge is provided in the large-diameter accommodation portion.