Parking device for vehicle

Abstract

To provide a parking device for a vehicle, which enables lubricating oil to be enclosed in a housing of a switching mechanism.SOLUTION: A parking device 100 for a vehicle comprises: a driving source 1; an output mechanism 2; a switching mechanism 3; a housing 4 within which the switching mechanism 3 is arranged, which has a hole part 4a subjected to insertion of a parking rod 31, and in which lubricating oil L is enclosed; and an oil seal 5 that is attached between an inner peripheral surface of th hole part 4a and the parking rod 31.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a parking device for a vehicle, and more particularly to a parking device for a vehicle provided with a drive source.

Background Art

[0002] Conventionally, a parking device for a vehicle provided with a drive source has been known (see, for example, Patent Document 1).

[0003] Patent Document 1 discloses a parking device for a vehicle including a park gear, a park pole meshing with the park gear, and a park rod that abuts against the park pole and moves the park pole to switch between a parking lock state and a parking lock release state. The parking device for a vehicle further includes a link member having one end connected to the park rod and the other end connected to a motor that is a drive source.

[0004] In the parking device for a vehicle, the drive source swings a lever member, and a park rod (second shaft) fixedly connected to be relatively rotatable with respect to the lever member swings about its axis to move the park pole, so that the parking lock state and the parking lock release state are switched.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Although not disclosed in the above Patent Document 1, the park rod and park gear, which are normal switching mechanisms, are arranged inside the housing of the vehicle transmission, and lubricating oil is enclosed in the housing for lubrication and cooling of the transmission. Further, in order to facilitate maintenance, it is preferable to arrange the park rod and park gear (switching mechanism) in a housing separate from the housing of the motor which is the drive mechanism.

[0007] Here, in a vehicle parking device in which a rotating output mechanism and a switching mechanism are fixed to each other, it is necessary to arrange a part of the output mechanism inside the housing of the switching mechanism and to provide a hole for rotatably configuring the output mechanism in the housing of the switching mechanism. As a result, there is a problem that lubricating oil may leak from the hole, and it is difficult to enclose the lubricating oil in the housing.

[0008] The present invention has been made to solve the above problems, and one object of the present invention is to provide a vehicle parking device capable of enclosing lubricating oil in the housing of the switching mechanism.

Means for Solving the Problems

[0009] To achieve the above object, a parking device for a vehicle according to one aspect of the present invention includes a drive source that generates a driving force for switching between a parking lock state and a parking lock release state of the vehicle, an output mechanism that outputs the driving force of the drive source, a parking lock position that positions the vehicle located on one side in the axial direction in a parking state by the output of the output mechanism, a park rod that linearly reciprocates along the axial direction between a parking lock release position that releases the parking state of the vehicle located on the other side in the axial direction, and a park pole that meshes with the park gear when the park rod moves to the parking lock position and releases the meshing state with the park gear when the park rod moves to the parking lock release position, a switching mechanism including a housing that has a hole portion into which the park rod is inserted and in which lubricating oil is enclosed, an oil seal attached between the inner peripheral surface of the hole portion and the park rod, and the output mechanism and the switching mechanism are configured as separate bodies from each other.

[0010] In the vehicle parking device according to one aspect of the present invention, as described above, there is a parking lock position for parking the vehicle located on one side in the axial direction by the output of the output mechanism, and a parking lock release position for releasing the parking state of the vehicle located on the other side in the axial direction. A park rod that linearly reciprocates along the axial direction, and when the park rod moves to the parking lock position, it meshes with the park gear, and when the park rod moves to the parking lock release position, the meshing state with the park gear is released. A switching mechanism including a park pole, a housing in which the switching mechanism is disposed, having a hole through which the park rod is inserted and filled with lubricating oil, and an oil seal attached between the inner peripheral surface of the hole and the park rod. As a result, when the park rod linearly moves, unlike the case where the park rod swings, that is, moves up and down or left and right when viewed from the longitudinal direction of the park rod, the hole provided in the housing can be set according to the diameter of the park rod, so that an increase in the diameter of the hole can be suppressed. Further, by providing an oil seal between the inner peripheral surface of the hole and the park rod, it is possible to suppress the formation of a gap between the hole and the park rod and the leakage of the lubricating oil to the outside of the housing. As a result, the lubricating oil can be enclosed in the housing of the switching mechanism. Further, since a part of the park rod is exposed from the housing, the output mechanism can abut against the exposed part of the park rod and output the driving force of the drive source, so that the output mechanism and the switching mechanism can be arranged in separate housings. Further, since the output mechanism and the housing are separate, unlike the case where the output mechanism and the housing are integrated, the output mechanism and the switching mechanism can be separated and maintained when maintaining the output mechanism or the switching mechanism. Therefore, maintenance becomes easy. Further, since the output mechanism and the housing are separate, component replacement can also be easily performed.

[0011] In the vehicle parking device according to the above-described one aspect, preferably, the switching mechanism further includes a biasing member that biases the park rod in the protruding direction of the park rod, which is the direction from the inside to the outside of the housing, and is attached to the park rod. When the output mechanism presses the park rod against the biasing force of the biasing member, the park rod moves to the parking lock release position, and when the pressing of the output mechanism on the park rod is released, the park rod is configured to move to the parking lock position by the biasing force of the biasing member.

[0012] With this configuration, by releasing the pressing of the output mechanism on the park rod, the park rod can be moved to the parking lock position by the biasing force of the biasing member, so there is no need for the output mechanism to move the park rod to the parking lock position. As a result, since the drive source only needs to be driven so as to separate the output mechanism from the park rod, unlike the case where the drive source is driven to pull the park rod in the direction opposite to the pressing direction by the output mechanism, the driving force of the drive source can be reduced. Also, the output mechanism and the park rod are in contact in the pressing direction, but do not necessarily need to be in contact in the direction opposite to the pressing direction, so there is no need to fix the two, and the assembly becomes easier.

[0013] In the vehicle parking device according to the above-described one aspect, preferably, when the park rod is in the parking lock waiting state where the park pole contacts the tooth tip surface of the park gear without meshing with the park gear during the movement from the parking lock release position to the parking lock position, the pressing of the output mechanism on the park rod is configured to be released.

[0014] With this configuration, in the parking lock waiting state, by releasing the pressing of the output mechanism on the park rod, the park rod can easily move to the parking lock position, so when the park gear rotates due to vibration, the park pole can be easily meshed with the park gear.

[0015] In the vehicle parking device according to the above-described one aspect, the output mechanism includes a first link member fixed to the drive source, and a second link member attached to the first link member and rotating around a predetermined rotation center to press the park rod. When the first link member rotates by the drive of the drive source, the second link member rotates around the predetermined rotation center, and the tip of the second link member is configured to press the park rod. The contact surface that contacts the tip of the second link member of the park rod has a curved surface shape.

[0016] With this configuration, when the output mechanism rotates and the tip describes an arc shape, by forming the contact surface into a curved surface shape that matches the arc shape described by the tip, the output mechanism and the park rod can be easily brought into contact.

[0017] In addition, in the vehicle parking device according to the above-described one aspect, the following configuration is also conceivable.

[0018] (Additional item 1) In the vehicle parking device according to the above-described one aspect, the output mechanism includes a moving member that linearly moves by the drive of the drive source. The contact surface that contacts the moving member of the park rod has a flat surface shape.

[0019] With this configuration, by forming the contact surface of the moving member that contacts the park rod into a flat surface shape, the moving member and the park rod can be brought into surface contact. Therefore, the park rod can be easily pressed against the biasing force of the biasing member by the output mechanism.

[0020] (Additional item 2) In the vehicle parking device according to the above-described one aspect, the housing and the output mechanism are fixed to each other by a fixing member.

[0021] With this configuration, since the housing and the output mechanism are fixed, even when the output mechanism and the housing are configured separately, the housing and the output mechanism can be easily arranged at appropriate positions.

Advantages of the Invention

[0022] According to the present invention, as described above, it is possible to provide a vehicle parking device capable of enclosing lubricating oil in a housing of a switching mechanism.

Brief Description of the Drawings

[0023]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0024] Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

[0025] [First Embodiment] With reference to FIGS. 1 to 5, the configuration of a vehicle parking device 100 according to the first embodiment will be described.

[0026] (Vehicle Parking Device) As shown in FIGS. 1 and 2, the vehicle parking device 100 is mounted on a vehicle. As an example, the vehicle is an electric vehicle equipped with only a motor as a power source. In the vehicle, when an occupant (driver) performs a shift switching operation via a parking switch, electrical shift switching control is configured to be performed.

[0027] When the parking switch is operated by the occupant, a signal for switching the shift position is input to the vehicle parking device 100 via a sensor provided in the parking switch. Based on the signal input from the parking switch, the vehicle parking device 100 is switched to a parking lock position and a parking lock release position corresponding to the switching operation of the occupant, and whether to lock the rotation of the wheels by the vehicle parking device 100 is switched. Such shift switching control is called shift-by-wire.

[0028] The vehicle parking device 100 has a structure capable of switching between locking and unlocking the rotation of the wheels. The vehicle parking device 100 includes a drive source 1, an output mechanism 2, a switching mechanism 3 including a park rod 31, a housing 4, and an oil seal 5. In the vehicle parking device 100, the output mechanism 2 presses the park rod 31 by driving the drive source 1, and is configured to switch to a parking lock release state in which the rotation of the vehicle is unlocked. Also, in the vehicle parking device 100, the output mechanism 2 moves away from the park rod 31 by driving the drive source 1, and is configured to switch to a parking lock state in which the rotation of the vehicle is locked. Also, in the first embodiment, the output mechanism 2 and the housing 4 in which the switching mechanism 3 is disposed inside are configured separately from each other. Therefore, during maintenance or the like, the output mechanism 2 and the housing 4 can be separated separately, and only one of them can be replaced.

[0029] (Drive Source) As shown in FIGS. 1 and 2, the drive source 1 is configured to generate a driving force for switching between the parking lock state and the parking lock release state of the vehicle. The drive source 1 includes, as an example, a motor (not shown) and a drive shaft 1a. Here, the direction in which the rotation center axis C of the drive source 1 extends is defined as the Z direction, one side in the Z direction is defined as the Z1 side, and the other side in the Z direction is defined as the Z2 side. Also, a direction orthogonal to the Z direction and the direction (axial direction) in which the park rod 31 extends is defined as the X direction, the side where the park rod 31 abuts on the output mechanism 2 in the X direction is defined as the X1 side, and the side opposite to the X1 side is defined as the X2 side. Further, a direction orthogonal to the Z direction and the X direction is defined as the Y direction. Note that the Y direction is the direction in which the rotation center axis of the park gear 33 extends. In the first embodiment, the drive shaft 1a is attached to the motor, and the drive shaft 1a is configured to move in the Z direction when the motor rotates.

[0030] (Output mechanism) The output mechanism 2 is configured to output the driving force of the drive source 1. The output mechanism 2 includes a first link member 21 fixed to the drive source 1 and a second link member 22 attached to the first link member 21 and configured to rotate around a predetermined rotation center and press the park rod 31. The output mechanism 2 is configured such that when the first link member 21 rotates by the drive of the drive source 1, the second link member 22 rotates around a predetermined rotation center 22b, and the tip portion 22a of the second link member 22 presses the park rod 31.

[0031] One end (the end on the X2 side) of the first link member 21 is attached to the drive shaft 1a of the drive source 1. Also, the other end (the end on the X1 side) of the first link member 21 is configured to be connected to one end (the end on the Z1 side) of the second link member 22. The tip portion 22a of the other end (the end on the Z2 side) of the second link member 22 is configured to abut on the park rod 31. A structure similar to a ball screw is formed by the motor, the drive shaft 1a, and the first link member 21. The other end of the second link member 22 has a tip portion 22a with a curved surface shape protruding in the X2 side direction.

[0032] As shown in FIGS. 3 and 4, when the drive shaft 1a moves in the Z direction as the motor rotates, one end of the first link member 21 connected to the drive shaft 1a is configured to move in the Z direction. At this time, with the portion connecting and fixing the first link member 21 and the drive shaft 1a as the rotation center, the first link member 21 is configured to rotate. Further, the first link member 21 rotates as the drive shaft 1a moves, and changes between an inclined state in which the Z-direction positions of one end and the other end shown in FIG. 3 are different and thus the member is inclined, and a horizontal state in which one end and the other end shown in FIG. 4 are horizontally aligned.

[0033] The change from the horizontal state to the inclined state is caused by the drive shaft 1a moving from the Z1 side to the Z2 side, resulting in one end of the first link member 21 moving to the Z2 side. The change from the inclined state to the horizontal state is caused by the drive shaft 1a moving from the Z2 side to the Z1 side, resulting in one end of the first link member 21 moving to the Z1 side. When the first link member 21 changes to the inclined state, the vehicle parking device 100 is configured to be in the parking lock state, and when the first link member 21 changes to the horizontal state, the vehicle parking device 100 is configured to be in the parking lock release state.

[0034] The second link member 22 is configured to rotate about a predetermined rotation center 22b. The predetermined rotation center 22b is configured to be located on the Z2 side of the connection portion between the first link member 21 and the second link member 22. Specifically, when the first link member 21 changes from an inclined state to a horizontal state, as the one end of the first link member 21 moves from the Z2 side to the Z1 side, the connection portion between the first link member 21 and the second link member 22 is configured to move to the X1 side. Thereby, the tip portion 22a of the other end of the second link member 22 is configured to rotate in a direction approaching the parking rod 31 about the predetermined rotation center 22b. In this case, the vehicle parking device 100 is configured to be in a parking lock release state. Specifically, from the state where the tip portion 22a and the parking rod 31 are separated, the tip portion 22a abuts on the parking rod 31, and the tip portion 22a moves in the X2 direction against the biasing force of the biasing member 34 together with the parking rod 31.

[0035] Also, when the first link member 21 changes from a horizontal state to an inclined state, as the one end of the first link member 21 moves from the Z1 side to the Z2 side, the connection portion between the first link member 21 and the second link member 22 is configured to move to the X2 side. Thereby, the tip portion 22a of the other end of the second link member 22 is configured to rotate in a direction away from the parking rod 31 about the predetermined rotation center 22b. In this case, the vehicle parking device 100 is configured to be in a parking lock state.

[0036] (Switching mechanism) As shown in FIGS. 1 and 2, the switching mechanism 3 is configured to switch between a parking lock state and a parking lock release state. The switching mechanism 3 includes a parking rod 31, a parking pole 32, a parking gear 33, and a biasing member 34.

[0037] The parking rod 31 is configured to linearly reciprocate along the axial direction (X direction) between a parking lock position that parks a vehicle positioned on one axial side by the output of the output mechanism 2 and a parking lock release position that releases the parking state of a vehicle positioned on the other axial side. The parking rod 31 includes a rod portion 31a, a cam member 31b, and a regulating portion 31c. The parking rod 31 has a contact surface 31f that contacts the tip portion 22a of the second link member 22. The contact surface 31f has a concave curved surface shape that is recessed toward the X2 side.

[0038] The rod portion 31a is constituted by a rod-shaped member extending along the X direction. The end portion on the X1 side of the rod portion 31a is configured to be exposed to the outside from the hole portion 4a of the housing 4. Thereby, a part of the parking rod 31 is configured to be exposed from the housing 4. The rod portion 31a is configured to linearly reciprocate along the axial direction between a parking lock position located on one axial side (X1 side) and a parking lock release position that releases the parking state of a vehicle located on the other axial side (X2 side) of the axial direction (X direction). Bearings are provided near both axial ends of the rod portion 31a. Note that the vicinity of both ends includes not only the ends but also positions shifted from the ends toward the center. The parking rod 31 is arranged in the order of the first bearing portion 31d on the X1 side, the regulating portion 31c, the cam member 31b, and the second bearing portion 31e on the X2 side from the X1 side toward the X2 side.

[0039] The cam member 31b has a frustum shape including a frustum of a cone and a frustum of a square pyramid. The cam member 31b has a lower surface extending in the X direction and an inclined surface inclined toward the Z1 side from the lower surface in a sectional view taken along the X direction. The cam member 31b is fixed to the rod portion 31a. The cam member 31b is configured to linearly reciprocate between a parking lock position on the X1 side and a parking lock release position on the X2 side in accordance with the linear reciprocating movement of the park rod 31. In the parking lock position, the lower surface of the cam member 31b is configured to abut against the first protruding portion 32c of the park pole 32 in the Z direction. Further, in the parking lock release position, the lower surface of the cam member 31b and the second protruding portion 32d of the park pole 32 are configured to abut against each other. Further, a guide portion may be provided between the cam member 31b and the housing 4 to guide the linear movement of the cam member 31b.

[0040] Further, the park rod 31 has a function of restricting the movement of the park pole 32. Specifically, in the parking lock position, the lower surface of the cam member 31b is configured to abut against the first protruding portion 32c of the park pole 32, so that the park pole 32 is configured to be restricted from moving (rotating) toward the Z1 side. Therefore, by restricting the park pole 32 from moving (rotating) toward the Z1 side, it is possible to suppress the release of the meshing state between the park pole 32 and the park gear 33 without the operation of the occupant.

[0041] The restricting portion 31c has a frustum shape including a frustum of a cone and a frustum of a square pyramid. The restricting portion 31c is fixed to the rod portion 31a. The restricting portion 31c is configured to restrict the movement of the park rod 31. Specifically, the diameter (or area) of the restricting portion 31c is configured to be larger than the diameter (or area) of the hole portion 4a of the housing 4, and when the park rod 31 moves toward the X1 side from the parking lock release position to the parking lock position, it is configured to contact the housing 4. Thereby, the park rod 31 is configured to be suppressed from moving to the X1 side from the parking lock position. Also, when the park rod 31 moves toward the X2 side from the parking lock position to the parking lock release position, it is configured to contact the park pole 32 whose movement is restricted by the cam member 31b. Thereby, the park rod 31 is configured to be suppressed from further moving to the X2 side from the parking lock release position. The restricting portion 31c and the cam member 31b are configured such that portions with a small length in the Z direction face each other in the X direction. Thereby, the first protruding portion 32c of the park pole 32 can be brought into contact with the rod portion 31a located between the restricting portion 31c and the cam member 31b.

[0042] When the park rod 31 moves to the parking lock position, the park pole 32 meshes with the park gear 33, and when the park rod 31 moves to the parking lock release position, the meshing state between the park gear 33 and the park pole 32 is configured to be released. The park pole 32 includes a main body portion 32a extending in the X direction, a claw portion 32b protruding toward the Z2 side near the end portion on the X1 side of the main body portion 32a, a first protruding portion 32c protruding toward the Z1 side near the end portion on the X1 side of the main body portion 32a, a second protruding portion 32d located on the X2 side of the first protruding portion 32c and having a small protruding height (length in the Z direction), and a return spring 32e. Note that the vicinity of the end portion includes the end portion and a position shifted from the end portion to the center.

[0043] The claw portion 32b is configured to have a shape similar to the shape of the gap between adjacent teeth 33a of the park gear 33. Specifically, the claw portion 32b has the same shape as the gap between adjacent teeth 33a of the park gear 33, but is configured to be smaller in size. The park pole 32 is configured to rotate toward the park gear 33 side and move to a position (parking lock position) where the claw portion 32b and the teeth 33a of the park gear 33 mesh with each other. Further, the park pole 32 is configured to stop the rotation of the park gear 33 when the claw portion 32b meshes with the park gear 33. Thereby, the vehicle is configured to be in a parking lock state in which the wheels are locked.

[0044] Also, the park pole 32 is configured to rotate in a direction away from the teeth 33a of the park gear 33 and move to a position (parking lock release position) where the engagement between the claw portion 32b and the teeth 33a of the park gear 33 is released. Then, when the claw portion 32b of the park pole 32 moves to the parking lock release position, it is configured to enable the rotation of the park gear 33. Thereby, the vehicle is configured to be in a parking lock release state in which the lock of the wheels is released.

[0045] An inclined surface is formed between the first protruding portion 32c and the second protruding portion 32d of the park pole 32. When the park rod 31 moves to the parking lock release position, the first protruding portion 32c is configured to contact the lower surface of the rod portion 31a positioned between the cam member 31b and the regulating portion 31c, and the second protruding portion 32d is configured to contact the lower surface of the cam member 31b. When the park rod 31 moves to the parking lock position, the first protruding portion 32c contacts the lower surface of the cam member 31b, but the second protruding portion 32d does not contact the park rod 31.

[0046] Since the parking rod 31 moves linearly in the X direction, the height of the lower surface of the cam member 31b is configured not to change. Therefore, at the parking lock release position, the second protrusion 32d located on the Z2 side with respect to the first protrusion 32c is configured to contact the lower surface of the cam member 31b, so that the park pole 32 can rotate to the Z1 side with respect to the parking lock position. Note that at the parking lock release position, the inclined surface on the lower side of the cam member 31b and the inclined surface connecting the first protrusion 32c and the second protrusion 32d are configured to contact each other.

[0047] The return spring 32e is configured to urge the park pole 32 to rotate toward the Z1 side. In the first embodiment, the return spring 32e is configured to urge the force to rotate in the clockwise direction. Therefore, when the parking rod 31 moves to the parking lock release position, the return spring 32e causes the first protrusion 32c to contact the lower surface of the rod portion 31a between the cam member 31b and the restricting portion 31c, and the park pole 32 is configured to rotate so that the second protrusion 32d contacts the lower surface of the cam member 31b.

[0048] The park gear 33 has a plurality of teeth 33a. The park gear 33 is fixed to the vehicle wheel. The park gear 33 is configured to rotate integrally with the wheel. The park gear 33 is configured such that the claw portion 32b of the park pole 32 meshes between adjacent teeth 33a.

[0049] The biasing member 34 biases in the protruding direction (X1 side) of the park rod 31, which is the direction from the inside to the outside of the housing 4, and is attached to the park rod 31. The biasing member 34 is configured by a coil spring as an example. One end on the X2 side of the biasing member 34 is configured to abut against the second bearing portion 31e. The other end on the X1 side of the biasing member 34 is configured to abut against the cam member 31b. When the output mechanism 2 presses the cam member 31b toward the X2 side, the biasing member 34 is configured to expand and contract, and the park rod 31 is configured to be able to move to the parking lock release position. At this time, the biasing member 34 is pressed from the X1 side to the X2 side by the cam member 31b and is configured to contract by being sandwiched between the cam member 31b and the second bearing portion 31e. Further, when the force for pressing the cam member 31b of the output mechanism 2 toward the X2 side is released, since the pressing of the cam member 31b is released, the biasing member 34 extends so as to return to its original shape toward the X1 side and is configured to move the park rod 31 to the parking lock position.

[0050] (Housing) As shown in FIG. 1, the housing 4 has a hole portion 4a in which the switching mechanism 3 is disposed inside and through which the park rod 31 is inserted, and is configured such that the lubricating oil L is enclosed. Specifically, the housing 4 is configured to store the lubricating oil L around the park gear 33. Note that FIG. 1 shows a cross-sectional view taken along the X direction. The lubricating oil L is configured to lubricate the rotation of the park gear 33. Further, the lubricating oil L may be configured to lubricate the movement of the park rod 31 and the park pole 32. In FIG. 1, the lubricating oil L is shown with hatching. Note that in FIG. 1, although a part of the park gear 33 is shown as being immersed in the lubricating oil L, the park rod 31, the park pole, and the park gear 33 may be immersed in the lubricating oil L.

[0051] As shown in FIG. 1, the housing 4 and the output mechanism 2 are configured separately. Therefore, the output mechanism 2 can be externally attached to the housing 4.

[0052] As shown in FIG. 2, the housing 4 and the output mechanism 2 are fixed to each other by a fixing member 7. The fixing member 7 is configured to position the housing 4 and the output mechanism 2.

[0053] The hole portion 4a is provided on the surface (the surface on the X1 side) of the housing 4 on the output mechanism 2 side. The diameter of the hole portion 4a is configured to be larger than the diameter of the rod portion 31a of the park rod 31. The area of the hole portion 4a is configured to be smaller than the area on the X1 side of the regulating portion 31c. A second bearing portion 31e is provided along the inner peripheral surface of the hole portion 4a.

[0054] (Oil seal) The oil seal 5 is attached between the inner peripheral surface of the hole portion 4a and the park rod 31. The park rod 31 is slidably attached to the oil seal 5. The oil seal 5 is provided so that the lubricating oil L does not leak.

[0055] Based on FIGS. 3 to 5, the detailed operation of the vehicle parking device 100 will be described.

[0056] FIG. 3 shows the parking lock state of the vehicle parking device 100. In the parking lock state, since one end (the end on the X2 side) of the first link member 21 of the output mechanism 2 is located on the Z2 side with respect to the other end (the end on the X1 side), the first link member 21 is in an inclined state. Further, the second link member 22 is located at a position away from the park rod 31 along with the inclined state of the first link member 21. Thereby, the output mechanism 2 and the park rod 31 are configured not to contact each other. Further, the park rod 31 is configured to be located at the parking lock position, and the lower surface of the cam member 31b is configured to contact the first protrusion 32c of the park pole 32. Further, the biasing member 34 is in a normal state where it is not contracted. Further, the park pole 32 is configured such that the claw portion 32b meshes with the teeth 33a of the park gear 33.

[0057] Figure 4 shows the parking lock release state of the vehicle parking device 100. In the parking lock release state, since one end (the end on the X2 side) and the other end (the end on the X1 side) of the first link member 21 of the output mechanism 2 are arranged along the X direction, the first link member 21 is in a horizontal state. Further, the tip 22a of the second link member 22 is configured to contact the contact surface 31f of the park rod 31. Further, the park rod 31 is configured to be positioned at the parking lock release position, and the lower surface of the cam member 31b is configured to contact the second protrusion 32d of the park pole 32. Further, the biasing member 34 is in a contracted state. Further, the engagement state where the claw portion 32b of the park pole 32 meshes with the tooth 33a of the park gear 33 is released.

[0058] In the vehicle parking device 100 according to the first embodiment, when the output mechanism 2 presses the park rod 31 against the biasing force of the biasing member 34, the park rod 31 moves to the parking lock release position, and when the pressing of the output mechanism 2 on the park rod 31 is released, the park rod 31 is configured to move to the parking lock position by the biasing force of the biasing member 34. Hereinafter, the detailed configuration will be described. Note that at the parking lock position, the end of the park rod 31 is located on the X1 side with respect to the parking lock release position. Further, in FIGS. 3 to 5, a part of the housing 4 is omitted.

[0059] The switching from the parking lock state of FIG. 3 to the parking lock release state of FIG. 4 will be described. When an operation to release the parking lock state is performed by the operation of an occupant, the drive source 1 is configured to be driven. As a result, the drive shaft 1a to which the first link member 21 is attached moves from the Z2 side to the Z1 side, and the first link member 21 is configured to change from an inclined state to a horizontal state. At this time, the other end of the first link member 21 is configured to move to the X1 side. When the other end of the first link member 21 moves to the X1 side, the second link member 22 is configured to rotate in a direction approaching the park rod 31 about a predetermined rotation center 22b. In the first embodiment, the second link member 22 is configured to rotate counterclockwise.

[0060] By the rotation of the second link member 22, the contact surface 31f of the park rod 31 and the tip portion 22a of the second link member 22 are configured to come into contact with each other. Then, against the biasing force of the biasing member 34, the second link member 22 of the output mechanism 2 presses one end exposed from the housing 4 of the park rod 31, and the park rod 31 is configured to move to the parking lock release position. At this time, the biasing member 34 is configured to be sandwiched between the cam member 31b and the first bearing portion 31d and contract.

[0061] Further, when the park rod 31 moves to the parking lock release position, the lower surface of the cam member 31b changes from a state of contacting the first protrusion 32c to a state of contacting the second protrusion 32d. By changing the protrusion with which the lower surface of the cam member 31b contacts, the park pole 32 is configured to rotate toward the Z1 side. In the first embodiment, the park pole 32 is configured to rotate clockwise. As a result, the claw portion 32b of the park pole 32 rotates in a direction away from the park gear 33, so that the state in which the claw portion 32b of the park pole 32 and the teeth 33a of the park gear 33 are engaged is configured to be released. The rotation of the park pole 32 is configured such that the biasing force of the return spring 32e contributes.

[0062] The switching from the parking lock release state in FIG. 4 to the parking lock state in FIG. 3 will be described. When an operation to set the parking lock state is performed by the operation of an occupant, the drive source 1 is configured to drive. As a result, the drive shaft 1a to which the first link member 21 is attached moves from the Z1 side to the Z2 side, and the first link member 21 is configured to change from a horizontal state to an inclined state. At this time, the other end of the first link member 21 is configured to move to the X2 side. When the other end of the first link member 21 moves to the X2 side, the second link member 22 is configured to rotate in a direction away from the park rod 31 about a predetermined rotation center 22b. In the first embodiment, the second link member 22 is configured to rotate clockwise. Thereby, the contact state between the contact surface 31f of the park rod 31 and the tip portion 22a of the second link member 22 is configured to be released. Then, since the pressing of the output mechanism 2 against the park rod 31 is released, the park rod 31 is configured to move to the parking lock position by the biasing force of the biasing member 34.

[0063] Specifically, the biasing member 34 is configured to extend while pressing the cam member 31b toward the X1 side and return to its original state. Further, when the park rod 31 moves to the parking lock position, the lower surface of the cam member 31b is configured to change from a state of contacting the second protrusion 32d to a state of contacting the first protrusion 32c. By changing the protrusion with which the lower surface of the cam member 31b contacts, the park pole 32 is configured to rotate toward the Z2 side. In the first embodiment, the park pole 32 is configured to rotate counterclockwise. As a result, the claw portion 32b of the park pole 32 rotates in a direction approaching the park gear 33, so that the claw portion 32b of the park pole 32 and the tooth 33a of the park gear 33 are configured to mesh with each other. Note that the rotation of the park pole 32 is configured to be performed against the biasing force of the return spring 32e.

[0064] As shown in FIG. 5, in the first embodiment, in the vehicle parking device 100, when the parking rod 31 moves from the parking lock release position to the parking lock position, the parking pole 32 contacts the tooth tip surface 33b of the parking gear 33 without engaging with the parking gear 33 in the parking lock waiting state, and the pressing of the output mechanism 2 on the parking rod 31 is released.

[0065] As shown in FIG. 5, in the parking lock waiting state, the lower surface of the claw portion 32b of the parking pole 32 is in contact with the tooth tip surface 33b of the parking gear 33. In this case, the parking pole 32 is located between the parking lock position and the parking lock release position. The biasing member 34 is in a state where it has extended slightly but has not returned to its original state. Also, the lower end surface of the cam member 31b is either in contact with one of the first protrusion 32c or the second protrusion 32d, or is not in contact with either.

[0066] In the parking lock waiting state, an operation is performed by the occupant to change from the parking lock release state to the parking lock state. Therefore, the drive source 1 is driven, the drive shaft 1a to which the first link member 21 is attached moves from the Z1 side to the Z2 side, and the first link member 21 changes from the horizontal state to the inclined state. At this time, the other end of the first link member 21 is configured to move to the X2 side. When the other end of the first link member 21 moves to the X2 side, the second link member 22 is configured to rotate in a direction away from the parking rod 31 about a predetermined rotation center 22b. As a result, the contact state between the contact surface 31f of the parking rod 31 and the tip portion 22a of the second link member 22 is released. And when the contact state between the contact surface 31f of the parking rod 31 and the tip portion 22a of the second link member 22 is released, the pressing of the output mechanism 2 on the parking rod 31 is released.

[0067] When the pressing force on the park rod 31 of the output mechanism 2 is released, the park rod 31 is configured to move to the parking lock position by the biasing force of the biasing member 34. Since the pressing force on the park rod 31 of the output mechanism 2 is released, the park rod 31 is in a state where it can move in either the X direction. Therefore, when an impact is applied and the park gear 33 rotates, the claw portion 32b of the park pole 32 and the tooth 33a of the park gear 33 are configured to mesh with each other. Further, the first protruding portion 32c of the park pole 32 abuts on the lower surface of the cam member 31b, and the biasing member 34 is configured to return to its original shape.

[0068] (Effect of the First Embodiment) In the first embodiment, the following effects can be obtained.

[0069] In the first embodiment, as described above, a park rod 31 that linearly reciprocates along the axial direction between a parking lock position that parks the vehicle located on one side in the axial direction by the output of the output mechanism 2 and a parking lock release position that releases the parking state of the vehicle located on the other side in the axial direction, and when the park rod 31 moves to the parking lock position, it meshes with the park gear 33, and when the park rod 31 moves to the parking lock release position, a switching mechanism 3 including a park pole 32 whose meshing state with the park gear 33 is released, the switching mechanism 3 is disposed inside, a housing 4 having a hole 4a through which the park rod 31 is inserted and filled with lubricating oil L, and an oil seal 5 attached between the inner peripheral surface of the hole 4a and the park rod 31. Thereby, when the park rod 31 linearly moves, unlike the case where the park rod 31 swings, that is, moves up and down or left and right when viewed from the longitudinal direction of the park rod, the hole 4a provided in the housing 4 can be set according to the diameter of the park rod 31, so that an increase in the diameter of the hole 4a can be suppressed. Further, by providing the oil seal 5 between the inner peripheral surface of the hole 4a and the park rod 31, it is possible to suppress the formation of a gap between the hole 4a and the park rod 31 and the leakage of the lubricating oil L to the outside of the housing 4. As a result, the lubricating oil L can be enclosed in the housing 4 of the switching mechanism 3. Further, since a part of the park rod 31 is exposed from the housing 4, the output mechanism 2 can abut against the exposed part of the park rod 31 and output the driving force of the drive source 1, so that the output mechanism 2 and the switching mechanism 3 can be arranged in separate housings 4. Further, since the output mechanism 2 and the housing 4 are separate, unlike the case where the output mechanism 2 and the housing 4 are integrated, when maintaining the output mechanism 2 or the switching mechanism 3, the output mechanism 2 and the switching mechanism 3 can be separated and maintained. For this reason, maintenance becomes easy. Further, since the output mechanism 2 and the housing 4 are separate, component replacement can also be easily performed.

[0070] Also, in the first embodiment, as described above, the switching mechanism 3 further includes a biasing member 34 that biases the parking rod 31 in the protruding direction of the parking rod 31, which is the direction from the inside to the outside of the housing 4, and is attached to the parking rod 31. When the output mechanism 2 presses the parking rod 31 against the biasing force of the biasing member 34, the parking rod 31 moves to the parking lock release position, and when the pressing of the output mechanism 2 against the parking rod 31 is released, the parking rod 31 moves to the parking lock position by the biasing force of the biasing member 34. Thus, by releasing the pressing of the output mechanism 2 against the parking rod 31, the biasing force of the biasing member 34 can move the parking rod 31 to the parking lock position, so there is no need for the output mechanism 2 to move the parking rod 31 to the parking lock position. Accordingly, since the drive source 1 only needs to be driven to separate the output mechanism 2 from the parking rod 31, unlike the case where the drive source 1 is driven to pull the parking rod 31 in the direction opposite to the pressing direction by the output mechanism 2, the driving force of the drive source can be reduced. Also, since the output mechanism 2 and the parking rod 31 are in contact in the pressing direction but do not necessarily need to be in contact in the direction opposite to the pressing direction, there is no need to fix the two, and the assembly becomes easy.

[0071] Also, in the first embodiment, as described above, when the parking rod 31 is moving from the parking lock release position to the parking lock position, in the parking lock waiting state where the parking pole 32 contacts the tooth tip surface 33b of the parking gear 33 without meshing with the parking gear 33, the pressing of the output mechanism 2 against the parking rod 31 is configured to be released. Thus, in the parking lock waiting state, by releasing the pressing of the output mechanism 2 against the parking rod 31, it becomes easy for the parking rod 31 to move to the parking lock position, so that when the parking gear 33 rotates due to vibration, the parking pole 32 can be easily meshed with the parking gear 33.

[0072] Also, in the first embodiment, as described above, the output mechanism 2 includes a first link member 21 fixed to the drive source 1 and a second link member 22 attached to the first link member 21 and rotating around a predetermined rotation center 22b to press the park rod 31. When the first link member 21 rotates due to the drive of the drive source 1, the second link member 22 rotates around the predetermined rotation center 22b, and the tip 22a of the second link member 22 is configured to press the park rod 31. The contact surface 31f that contacts the tip 22a of the second link member 22 of the park rod 31 has a curved surface shape. Thereby, when the output mechanism 2 rotates and the tip 22a describes an arc shape, by forming a curved surface shape in accordance with the arc shape described by the tip 22a on the contact surface 31f, the output mechanism 2 and the park rod 31 can be easily brought into contact with each other.

[0073] Also, in the first embodiment, as described above, the housing 4 and the output mechanism 2 are fixed to each other by the fixing member 7. Thereby, since the housing 4 and the output mechanism 2 are fixed, the position where the output mechanism 2 is attached to the housing 4 can be positioned. Thereby, even when the output mechanism 2 and the housing 4 are configured as separate bodies, the housing 4 and the output mechanism 2 can be easily arranged at appropriate positions.

[0074] [Second Embodiment] With reference to FIGS. 6 to 8, the configuration of the vehicle parking device 200 according to the second embodiment will be described. In the second embodiment, the output mechanism 202 is configured to move linearly. In the second embodiment, detailed descriptions of the same configurations as those in the first embodiment are omitted.

[0075] As shown in FIG. 6, in the second embodiment, the output mechanism 202 includes a moving member 23 that moves linearly by the drive of the drive source 201. Also, the contact surface 31f that contacts the moving member 23 of the park rod 31 has a flat surface shape.

[0076] (Output Mechanism) In the second embodiment, the moving member 23 of the output mechanism 202 is arranged concentrically with the parking rod 31 and reciprocates linearly, and includes a solenoid, a ball screw or a trapezoidal screw that converts rotational motion into reciprocating motion, a motor, and the like.

[0077] Based on FIGS. 6 to 8, the detailed operation of the vehicle parking device 200 will be described. Note that in FIGS. 6 to 8, a part of the housing 4 is omitted.

[0078] FIG. 6 shows the parking lock state of the vehicle parking device 200. In the parking lock state, the drive source 201 is not driven, and the moving member 23 of the output mechanism 202 is configured to be located on the drive source 201 side. At this time, as an example, the moving member 23 of the output mechanism 202 and the contact surface 31f of the parking rod 31 are configured not to contact each other. In another example, the moving member 23 of the output mechanism 202 and the contact surface 31f of the parking rod 31 may be in contact with each other.

[0079] In the parking lock state, since the drive source 201 is not driven, the moving member 23 of the output mechanism 202 does not move to the X2 side, so the moving member 23 of the output mechanism 202 is configured not to press the parking rod 31. Further, the parking rod 31 is configured to be located at the parking lock position, and the lower surface of the cam member 31b is configured to contact the first protruding portion 32c of the park pole 32. Furthermore, the biasing member 34 is in a normal state where it is not contracted. Also, the park pole 32 is configured such that the claw portion 32b meshes with the tooth 33a of the park gear 33.

[0080] FIG. 7 shows the parking lock release state of the vehicle parking device 200. In the parking lock release state, when the drive source 201 is driven, the moving member 23 of the output mechanism 202 is configured to move in a direction away from the drive source 201 (the X2 side). At this time, the moving member 23 of the output mechanism 202 and the contact surface 31f of the park rod 31 are configured to come into contact with each other. Further, the moving member 23 of the output mechanism 202 is configured to press the park rod 31 to the X2 side by moving to the X2 side. As a result, the park rod 31 is configured to move to the parking lock release position, and the lower surface of the cam member 31b is configured to come into contact with the second protruding portion 32d of the park pole 32. Further, the biasing member 34 is in a contracted state. Also, the engagement state where the claw portion 32b of the park pole 32 meshes with the teeth 33a of the park gear 33 is released.

[0081] In the vehicle parking device 200 according to the second embodiment, when the output mechanism 202 presses the park rod 31 against the biasing force of the biasing member 34, the park rod 31 moves to the parking lock release position, and when the pressing of the output mechanism 202 against the park rod 31 is released, the park rod 31 is configured to move to the parking lock position by the biasing force of the biasing member 34. Hereinafter, the detailed configuration will be described. Note that at the parking lock position, the end portion of the park rod 31 is located on the X1 side with respect to the parking lock release position.

[0082] The switching from the parking lock state in FIG. 6 to the parking lock release state in FIG. 7 will be described. When an operation to release the parking lock state is performed by the operation of the occupant, the drive source 201 is configured to be driven. As a result, the moving member 23 of the output mechanism 202 is configured to linearly move from the X1 side to the X2 side. Due to the linear movement of the moving member 23, the contact surface 31f of the park rod 31 and the moving member 23 are configured to come into contact with each other. Then, against the biasing force of the biasing member 34, the moving member 23 of the output mechanism 202 presses one end exposed from the housing 4 of the park rod 31, and the park rod 31 is configured to move to the parking lock release position. At this time, the biasing member 34 is configured to be sandwiched between the cam member 31b and the first bearing portion 31d and contract.

[0083] Further, when the park rod 31 moves to the parking lock release position, the state where the lower surface of the cam member 31b contacts the first protrusion 32c is changed to the state where the lower surface of the cam member 31b contacts the second protrusion 32d. By changing the protrusion with which the lower surface of the cam member 31b contacts, the park pole 32 is configured to rotate toward the Z1 side. In the second embodiment, the park pole 32 is configured to rotate clockwise. As a result, the claw portion 32b of the park pole 32 rotates in a direction away from the park gear 33, so that the state where the claw portion 32b of the park pole 32 and the teeth 33a of the park gear 33 are engaged is configured to be released. Thereby, the locked state of the wheel to which the park gear 33 is attached is released. Note that the rotation of the park pole 32 is configured such that the biasing force of the return spring 32e contributes.

[0084] The switching from the parking lock released state in FIG. 7 to the parking lock state in FIG. 6 will be described. When an operation to set the parking lock state is performed by an occupant's operation, the driving of the drive source 201 is configured to stop. As a result, the moving member 23 of the output mechanism 202 is configured to linearly move from the X2 side to the X1 side. By the linear movement of the moving member 23, the contact state between the contact surface 31f of the park rod 31 and the moving member 23 is configured to be released. Then, by the biasing force of the biasing member 34, the park rod 31 is configured to move to the parking lock position.

[0085] Also, when the park rod 31 moves to the parking lock position, the lower surface of the cam member 31b is configured to change from the state of contacting the second protrusion 32d to the state of contacting the first protrusion 32c. By the change of the protrusion with which the lower surface of the cam member 31b contacts, the park pole 32 is configured to rotate toward the Z2 side. In the second embodiment, the park pole 32 is configured to rotate counterclockwise. As a result, since the claw portion 32b of the park pole 32 rotates in a direction approaching the park gear 33, the claw portion 32b of the park pole 32 and the tooth 33a of the park gear 33 are configured to mesh with each other. Thereby, the wheel to which the park gear 33 is attached is brought into a locked state. Note that the rotation of the park pole 32 is configured to be performed against the biasing force of the return spring 32e.

[0086] As shown in FIG. 8, in the second embodiment, the vehicle parking device 200 is configured such that when the park rod 31 is in the parking lock waiting state where the park pole 32 contacts the tooth tip surface 33b of the park gear 33 without meshing with the park gear 33 during the movement from the parking lock release position to the parking lock position, the pressing force on the park rod 31 of the output mechanism 202 is released.

[0087] As shown in FIG. 8, in the parking lock waiting state, the lower surface of the claw portion 32b of the park pole 32 is in contact with the tooth tip surface 33b of the park gear 33. In this case, although the biasing member 34 is slightly extended, it is not in the state of returning to its original state. Also, the lower end surface of the cam member 31b is either in contact with one of the first protruding portion 32c or the second protruding portion 32d, or is not in contact with either of them.

[0088] In the parking lock waiting state, an operation is being performed by the occupant to change from the parking lock release state to the parking lock state. Therefore, the drive of the drive source 201 has stopped, and the moving member 23 of the output mechanism 202 is configured to move from the X2 side to the X1 side. On the other hand, the park rod 31 is in an intermediate stage of moving to the parking lock position and is located between the parking lock release position and the parking lock position. As a result, the space between the contact surface 31f of the park rod 31 and the moving member 23 is configured to increase. Then, since the pressing of the park rod 31 by the output mechanism 202 is released, the park rod 31 is configured to move to the parking lock position by the biasing force of the biasing member 34. Since the pressing of the park rod 31 by the output mechanism 202 is released, the park rod 31 is in a state where it can move in either the X direction. Therefore, when an impact is applied and the park gear 33 rotates, the claw portion 32b of the park pole 32 and the tooth 33a of the park gear 33 are configured to mesh. Also, the first protruding portion 32c of the park pole 32 is in contact with the lower surface of the cam member 31b, and the biasing member 34 is configured to return to its original shape.

[0089] (Effect of the Second Embodiment) In the second embodiment, similar to the first embodiment, there is a parking lock position for parking the vehicle located on one side in the axial direction by the output of the output mechanism 202, and a parking lock release position for releasing the parking state of the vehicle located on the other side in the axial direction. There is a park rod 31 that linearly reciprocates along the axial direction between these positions, and when the park rod 31 moves to the parking lock position, it meshes with the park gear 33, and when the park rod 31 moves to the parking lock release position, the meshing state with the park gear 33 is released. There is a switching mechanism 3 including a park pole 32, a housing 4 in which the switching mechanism 3 is disposed, having a hole 4a through which the park rod 31 is inserted and filled with lubricating oil L, and an oil seal 5 attached between the inner peripheral surface of the hole 4a and the park rod 31. As a result, when the park rod 31 moves linearly, unlike the case where the park rod 31 swings, that is, moves up and down or left and right when viewed from the longitudinal direction of the park rod, the hole 4a provided in the housing 4 can be set according to the diameter of the park rod 31, so that an increase in the diameter of the hole 4a can be suppressed. Also, by providing the oil seal 5 between the inner peripheral surface of the hole 4a and the park rod 31, it is possible to suppress the formation of a gap between the hole 4a and the park rod 31 and the leakage of the lubricating oil L to the outside of the housing 4. The lubricating oil L can be enclosed in the housing 4 of the switching mechanism 3. Also, since a part of the park rod 31 is exposed from the housing 4, the output mechanism 202 can abut against the exposed part of the park rod 31 and output the driving force of the drive source 201, so that the output mechanism 202 and the switching mechanism 3 can be arranged in separate housings 4. Also, since the output mechanism 202 and the housing 4 are separate, unlike the case where the output mechanism 202 and the housing 4 are integrated, when maintaining the output mechanism 2 or the switching mechanism 3, the output mechanism 202 and the switching mechanism 3 can be separated and maintained. For this reason, maintenance becomes easy. Also, since the output mechanism 202 and the housing 4 are separate, component replacement can also be easily performed.

[0090] Further, in the second embodiment, as described above, in the vehicle parking device 200, the output mechanism 202 includes a moving member 23 that linearly moves by the drive of the drive source 201, and the contact surface 31f that contacts the moving member 23 of the park rod 31 has a flat surface shape. Thereby, by forming the contact surface of the moving member 23 that contacts the park rod 31 into a flat surface shape, the moving member 23 and the park rod 31 can be brought into surface contact, so that the park rod 31 can be easily pressed against the biasing force of the biasing member 34 by the output mechanism 202. Note that other effects of the second embodiment are the same as those of the first embodiment.

[0091] [Modification Example] The above-described embodiments disclosed this time should be considered as illustrative in all respects and not restrictive. The scope of the present invention is shown not by the description of the above embodiments but by the claims, and further includes all changes (modification examples) within the meaning and scope equivalent to the claims.

[0092] For example, in the first and second embodiments, an example in which the vehicle is an electric vehicle is shown, but the present invention is not limited to this. In the present invention, the vehicle may be a hybrid vehicle including an engine and a motor.

[0093] Further, in the first embodiment, an example in which the drive source and the output mechanism include a ball screw structure is shown, but the present invention is not limited to this. In the present invention, the drive source and the output mechanism may include a rack and pinion mechanism, or may include a pressure pump or a pressure piston.

[0094] Further, in the first and second embodiments, an example in which the parking lock state is changed by the biasing force of the biasing member is shown, but the present invention is not limited to this. In the present invention, the output mechanism may be configured to change to the parking lock state.

Description of Reference Numerals

[0095] 1,201... drive source, 2,202... output mechanism, 3... switching mechanism, 4... housing, 4a... hole portion, 5... oil seal, 31... park rod, 32... park pole, 33... park gear, 33a... teeth, 33b... tooth tip surface, 34... biasing member, 100,200... vehicle parking device, L... lubricating oil

Claims

1. A drive source that generates a driving force for switching between a parking lock state and a parking lock release state of a vehicle; An output mechanism that outputs the driving force of the drive source; A parking lock position for parking the vehicle located on one side in the axial direction by the output of the output mechanism, and a parking lock release position for releasing the parking state of the vehicle located on the other side in the axial direction. A park rod that linearly reciprocates along the axial direction, and when the park rod moves to the parking lock position, it meshes with a park gear, and when the park rod moves to the parking lock release position, a switching mechanism including a park pole whose meshing state with the park gear is released; A housing that has a hole portion through which the park rod is inserted and in which lubricating oil is enclosed, and the switching mechanism is disposed inside; An oil seal attached between the inner peripheral surface of the hole portion and the park rod; A parking device for a vehicle, wherein the output mechanism and the housing in which the switching mechanism is disposed are configured separately from each other.

2. The switching mechanism further includes a biasing member that biases the park rod in a protruding direction of the park rod, which is a direction from the inside to the outside of the housing, and is attached to the park rod. Against the biasing force of the biasing member, when the output mechanism presses the park rod, the park rod moves to the parking lock release position, and when the pressing of the output mechanism on the park rod is released, the park rod moves to the parking lock position by the biasing force of the biasing member. The parking device for a vehicle according to claim 1, which is configured as described above.

3. The vehicle parking device according to claim 1, wherein when the park rod is in a parking lock waiting state in which the park pole contacts the tooth tip surface of the park gear without meshing with the park gear during the movement of the park rod from the parking lock release position to the parking lock position, the pressing of the output mechanism on the park rod is released.

4. The output mechanism includes a first link member fixed to the drive source, and a second link member attached to the first link member and rotating around a predetermined rotation center to press the park rod. When the first link member rotates due to the drive of the drive source, the second link member rotates around a predetermined rotation center, and the tip of the second link member is configured to press the parking rod. The vehicle parking device according to claim 1, wherein the contact surface of the parking rod that contacts the tip of the second link member has a curved surface shape.

Images