JP6727096B2 - Parking lock device - Google Patents

Description

The present invention relates to a parking lock device that prevents a vehicle from moving during parking or the like.

2. Description of the Related Art There has been a parking lock device that locks a part of a power transmission mechanism of driving wheels so that a vehicle does not move during parking. The parking lock device is generally mounted on a vehicle such as an engine vehicle having an automatic transmission, an EV (Electric Vehicle), and an HEV (Hybrid Electric Vehicle). In recent years, many electric parking lock devices that electrically switch between locking and unlocking have been adopted.

Heretofore, some techniques regarding a parking lock device have been proposed. For example, Patent Document 1 discloses a technique in which a traction motor generates an assist force to guide the release of a gear and a sprag when the connection between the parking lock gear and the sprag is not released by performing a release operation. Has been done. Patent Document 2 discloses a technique of releasing a parking lock mechanism by outputting a torque corresponding to a front and rear inclination angle φ of a vehicle from a vehicle driving motor. Patent Document 3 discloses a technique for locking the front wheels and locking the rear wheel motors according to the road surface gradient. Patent Document 4 discloses a technique in which, in a vehicle having a plurality of parking lock mechanisms, when any one of the parking lock mechanisms is not unlocked, the unlocking operation is interrupted and all the parking lock mechanisms are refastened. Has been done.

JP, 2007-112409, A Japanese Unexamined Patent Publication No. 9-286312 JP, 2007-181289, A JP, 2013-209090, A

In a vehicle that employs an electric parking lock device, a drive unit that switches between lock and release when an abnormality in an electric drive unit, an abnormality in a harness such as a power supply line or a control line of the drive unit, or a battery exhaustion occurs. Becomes inoperable. If the drive unit becomes inoperable while locked, there is a problem that the lock cannot be released and the vehicle cannot be moved.

An object of the present invention is to provide a parking lock device that electrically locks a vehicle so that the lock of the vehicle can be unlocked even when the drive unit becomes inoperable.

The invention according to claim 1 is a parking lock device,
It is provided in the power transmission path of the first drive wheel, locks the rotation of the first drive wheel in one direction in the locked state, and unlocks the lock state by rotation of the first drive wheel in the opposite direction. A first parking lock mechanism,
A first drive unit driven by electric power to switch the first parking lock mechanism between a locked state and a released state;
It is provided in the middle of the power transmission path of the second drive wheel, locks the rotation of the second drive wheel in one direction in the locked state, and unlocks the lock state by the rotation of the second drive wheel in the opposite direction. A second parking lock mechanism,
A second drive unit that is driven by electric power to switch the second parking lock mechanism between a locked state and a released state;
Equipped with
The rotation direction of the first drive wheel locked by the first parking lock mechanism and the rotation direction of the second drive wheel locked by the second parking lock mechanism are opposite directions.

The invention according to claim 2 is the parking lock device according to claim 1,
The first drive wheel and the second drive wheel can be separately driven by different power sources.

The invention according to claim 3 is the parking lock device according to claim 1 or 2,
The first parking lock mechanism has a first lock gear connected to a midway of a power transmission path of the first drive wheel, and a meshing position and a non-meshing position of the first lock gear by the first driving unit. And a first lock claw displaceable between
The first driving unit is an actuator in which an operating unit is directly or indirectly connected to the first lock pawl and the operating unit can be displaced without electric power when a force of a predetermined value or more is applied to the first lock pawl. Or a motor,
The second parking lock mechanism includes a second lock gear connected to a middle portion of a power transmission path of the second drive wheel, and a meshing position and a non-meshing position of the second lock gear by the second drive unit. A second lock claw that can be displaced between
The second driving unit is an actuator in which an operating unit is directly or indirectly connected to the second lock pawl and the operating unit can be displaced without power when a force of a predetermined value or more is applied to the second lock pawl. Alternatively, it is a motor.

According to the present invention, in a parking lock device that electrically locks a vehicle, when the drive unit becomes inoperable, the locked state can be released by applying a torque in a predetermined rotation direction to the drive wheels. it can. Further, in the locked state, the first and second parking lock mechanisms lock the first drive wheel and the second drive wheel in opposite rotational directions, so that, for example, even when the vehicle is stopped on a slope, It can be locked so that it does not move.

It is a block diagram which shows the principal part of the vehicle of embodiment of this invention. It is a block diagram which shows the parking lock of embodiment of this invention. It is explanatory drawing which shows the process in which the parking lock in a locked state is released by an external force, and (A)-(C) shows the 1st process to the 3rd process, respectively. It is a figure explaining the state of a vehicle when a parking lock is locked, (A) is at the time of a stop without a slope, (B) is a stop at an uphill slope, (C) is a stop at a downhill slope. Show. It is explanatory drawing which shows the process in which the parking lock apparatus of the 1st modification is released by an external force, and (A)-(C) shows the 1st process to the 3rd process, respectively. It is a block diagram which shows the modification which applied the parking lock device of embodiment to the vehicle which has one power source, (A) shows a 1st example, (B) shows a 2nd example.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a configuration diagram showing a main part of a vehicle according to an embodiment of the present invention.

The vehicle 1 of the present embodiment is an electric vehicle (EV) having a plurality of front wheels 2 as first driving wheels and a plurality of rear wheels 3 as second driving wheels. The vehicle 1 includes a front wheel motor 11, a rear wheel motor 12, drive circuits 11a and 12a, transmission mechanisms 13 and 14, a front parking lock 15, a rear parking lock 16, a high voltage battery 17, an auxiliary battery 18, and a shift operation unit. 19, and an ECU (Electronic Control Unit) 20. The parking lock device according to the present embodiment has a configuration in which the front parking lock 15 and the rear parking lock 16 are combined among the above-described components. Further, among the above-mentioned components, the front wheel motor 11 and the rear wheel motor 12 correspond to an example of the power source according to the present invention.

The front wheel motor 11 and the rear wheel motor 12 generate driving power. The front wheel motor 11 and the rear wheel motor 12 independently generate the power of the front wheels 2 and the power of the rear wheels 3.

The drive circuits 11a and 12a convert electric power of the high voltage battery 17 based on a command from the ECU 20 and output the electric power to the front wheel motor 11 and the rear wheel motor 12, respectively. These drive the front wheel motor 11 and the rear wheel motor 12, respectively.

The front transmission mechanism 13 transmits the power of the front wheel motor 11 to the two front wheels 2. The transmission mechanism 13 may include a torque converter, a transmission, a front differential gear, and the like.

The rear transmission mechanism 14 transmits the power of the rear wheel motor 12 to the two rear wheels 3. The transmission mechanism 14 may include a torque converter, a transmission, a rear differential gear, and the like.

The front parking lock 15 has a parking lock mechanism 15A and an actuator 15B. The parking lock mechanism 15A is provided in a part of the power transmission path of the front transmission mechanism 13. The actuator 15B electrically moves the parking lock mechanism 15A. Details of the parking lock 15 will be described later.

The rear parking lock 16 has a parking lock mechanism 16A and an actuator 16B. The parking lock mechanism 16A is provided in a part of the power transmission path of the rear transmission mechanism 14. The actuator 16B electrically moves the parking lock mechanism 16A. Details of the parking lock 16 will be described later.

The high-voltage battery 17 stores electric power for traveling and supplies electric power to the drive circuits 11a and 12a.

Auxiliary battery 18 supplies electric power to low-voltage circuits and electric devices that operate at a power supply voltage of 15 V or less, such as actuators 15B and 16B and ECU 20.

The shift operating unit 19 is a device that receives a shift operation of an occupant, and can select a parking range “P” that locks the parking locks 15 and 16.

The ECU 20 controls the vehicle 1 during traveling and when the vehicle is stopped. The ECU 20 individually outputs torque commands for the front wheel motor 11 and the rear wheel motor 12 to the drive circuits 11a and 12a. When the torque command is output, the drive circuits 11a and 12a supply a drive current corresponding to the command to the front wheel motor 11 and the rear wheel motor 12 to generate torque according to the command. In addition, the ECU 20 drives the actuators 15B and 16B of the parking locks 15 and 16 in accordance with the operation of the shift operation unit 19 to switch the lock state.

<Configuration of parking lock>
FIG. 2 is a configuration diagram showing a parking lock according to the embodiment of the present invention. FIG. 3 is an explanatory view showing a process in which the parking lock in the locked state is released by an external force, and (A)-(C) show the first to third processes, respectively.

The front parking lock 15 includes a parking lock mechanism 15A and an actuator 15B. The parking lock mechanism 15A has a lock gear 101 and an arm 102. The arm 102 is provided with a lock claw 103. The parking lock mechanism 15A, the actuator 15B, the lock gear 101, and the lock pawl 103 correspond to an example of a first parking lock mechanism, a first drive unit, a first lock gear, and a first lock pawl, respectively, according to the present invention.

The lock gear 101 is connected to a part of the power transmission path of the transmission mechanism 13, and rotates about the rotation axis f1 when the power is transmitted. When the lock gear 101 is locked, the motion of the power transmission path is locked and the rotation of the front wheels 2 is locked.

By driving the actuator 15B, the arm 102 rotates about the rotation axis f2 between the retracted position p1 and the locked position p2. At the lock position p2, the lock claw 103 is arranged at the meshing position of the lock gear 101, and locks the lock gear 101. At the retracted position p1, the arm 102 is positioned by the stopper h1, and the lock claw 103 is maintained at the non-meshing position separated from the lock gear 101. As a result, the lock gear 101 is unlocked.

The teeth of the lock gear 101 have a steep portion b that steeply rises on the side facing the forward direction X1, and an inclined portion a that rises gently on the side facing the reverse direction X2. With such a shape, as shown in FIGS. 3A to 3C, when the lock gear 101 rotates in the reverse direction X2 in the locked state, the teeth of the lock gear 101 move the lock claw 103 to the non-meshing position. By pushing back, the arm 102 can be moved to the release position p3. The configuration in which the lock claw 103 is pushed back by the rotation of the lock gear 101 in the reverse direction X2 is not limited to the above specific example. For example, the same effect can be obtained even if the gently inclined portion is provided on the lock claw 103 instead of the teeth of the lock gear 101.

The actuator 15B rotates the actuating portion by electric power to rotate the arm 102 from the retracted position p1 to the locked position p2 or from the locked position p2 to the retracted position p1. The actuator 15B inputs the electric power of the auxiliary battery 18 via the ECU 20 and operates according to a command from the ECU 20. In a stopped state in which the actuator 15B is not supplied with electric power, the operating portion is fixed with a predetermined force so as not to move easily. On the other hand, when an external force (torque) of a predetermined value or more is applied to the operating portion, the operating portion rotates even if the actuator 15B is not supplied with electric power.

The rear parking lock 16 has substantially the same structure as the front parking lock 15. The rear parking lock mechanism 16A has a lock gear 101 and an arm 102 including a lock claw 103, similar to that shown in FIG. The rear parking lock mechanism 16A, the actuator 16B, the lock gear 101, and the lock pawl 103 correspond to examples of the second parking lock mechanism, the second drive unit, the second lock gear, and the second lock pawl according to the present invention, respectively.

In the rear parking lock 16, the lock gear 101 is connected in the middle of the power transmission path of the rear transmission mechanism 14. The rotation direction of the rear wheel 3 corresponding to the rotation of the rear lock gear 101 in the forward direction X1 (locked direction) is the rotation direction of the front wheel 2 corresponding to the rotation of the front lock gear 101 in the forward direction X1 (locked direction). It is set to be opposite to the rotation direction of.

<Parking lock operation>
4A and 4B are views for explaining the state of the vehicle when the parking lock is locked. FIG. 4A is a vehicle without a tilt, FIG. 4B is a vehicle with an uphill slope, and FIG. 4C is a downhill. Shows when the vehicle is stopped.

According to the parking locks 15 and 16 configured as described above, when the parking lock is operated in the shift operation unit 19 at the end of driving, the actuators 15B and 16B are driven to move the front and rear arms 102 to the lock position p2. Moving. As a result, the front and rear lock gears 101 are locked against rotation in the forward direction X1, and the rotations of the front wheel 2 and the rear wheel 3 corresponding to these rotation directions are locked. In the locked state, the supply of electric power to the actuators 15B and 16B is stopped, but the operating portions of the actuators 15B and 16B are fixed with a predetermined force, and the front and rear arms 102 are maintained at the lock position p2.

In the locked state, as shown in FIGS. 4A to 4C, the front wheels 2 are locked in the forward direction Y1 and the rear wheels 3 are locked in the backward direction Y2. Therefore, even if the vehicle 1 is pushed from the front-rear direction when the vehicle is stopped, the vehicle 1 does not move due to the lock of either the front wheel 2 or the rear wheel 3. Further, as shown in FIGS. 4B and 4C, even if the vehicle 1 is stopped on a slope, the vehicle 1 does not move due to the lock of either the front wheel 2 or the rear wheel 3.

When a lock release operation is performed in the shift operation unit 19 such as at the start of operation, the actuators 15B and 16B are driven to move the front and rear arms 102 to the retracted position p1. As a result, the front wheel 2 and the rear wheel 3 are unlocked. In the unlocked state, the supply of electric power to the actuators 15B and 16B is stopped, but the operating portions of the actuators 15B and 16B are fixed with a predetermined force, and the front and rear arms 102 are maintained at the retracted position p1. ..

<Parking Lock Abnormal Avoidance Operation 1>
In the locked state, an abnormality occurs in the front parking lock 15 and the front actuator 15B cannot operate. In such a case, even if the shift operation unit 19 is unlocked, the rear parking lock 16 and the rear wheel 3 are unlocked, but the front parking lock 15 and the front wheel 2 are unlocked. Maintained. In such a case, for example, the ECU 20 may be configured to detect an abnormality of the parking lock 15 via a sensor or the like and display an indicator lamp on the display panel that the front parking lock 15 cannot be released. Accordingly, the occupant of the vehicle 1 can recognize that the front parking lock 15 is not released.

In such a case, the occupant of the vehicle 1 performs a driving operation to cause the front wheel motor 11 or the rear wheel motor 12 to generate a torque equal to or greater than a predetermined value in the backward direction. The generation of such torque may be voluntarily performed by the ECU 20 based on the detection of abnormality. Due to this torque, the vehicle 1 moves backward a little. Then, as shown in FIG. 3A, the motion of the front wheel motor 11 or the front wheels 2 is transmitted to the lock gear 101, the lock gear 101 rotates in the unlocked reverse direction X2, and the arm 102 moves toward the retracted position p1. Press to. Then, as shown in FIG. 3B, the tips of the teeth of the lock gear 101 are pushed to a non-meshing position where they face the tips of the lock claws 103. The position of the arm 102 at this time is referred to as a release position p3. Then, at this position, the operating portion of the actuator 15B is held so as not to move unless a predetermined force is applied, and the arm 102 is maintained at the release position p3. As such an actuator 15B, for example, a non-energized holding type solenoid actuator can be applied. With such a solenoid actuator, the arm 102 moves to the release position p3 by applying a force greater than the holding force, and thereafter, the position of the arm 102 can be held by the holding force.

As shown in FIG. 3C, when the arm 102 is maintained at the release position p3, the engagement between the lock gear 101 and the lock claw 103 is released, and the lock gear 101 moves in the forward direction X1 and the reverse direction X2. It becomes possible to rotate to both. As a result, the front wheels 2 are unlocked and the vehicle 1 can travel. The occupant can move the vehicle 1 by traveling, for example, to a maintenance place where the abnormality of the parking lock 15 is repaired.

In the above example, the case where the front parking lock 15 becomes abnormal is shown, but the lock can be similarly released when the rear parking lock 16 becomes abnormal. In this case, the rotation direction in which the torque is generated may be reversed in response to the abnormality of the rear parking lock 16.

<Parking lock abnormality avoidance operation 2>
Next, a method of unlocking the actuators 15B and 16B of both the front parking lock 15 and the rear parking lock 16 in the locked state will be described.

When the actuators 15B and 16B become inoperable, the locked states of the parking locks 15 and 16 are not released even if the shift operation unit 19 is unlocked. In such a case, for example, the ECU 20 detects an abnormality in the parking locks 15 and 16 via a sensor or the like, and displays on the indicator lamp of the display panel that the front and rear parking locks 15 and 16 cannot be unlocked. You may. Thereby, the occupant of the vehicle 1 can recognize that both the front and rear parking locks 15 and 16 are not unlocked.

When the occupant of the vehicle 1 recognizes that both parking locks 15 and 16 are inoperable and is not unlocked, first, the front wheel 2 is floated by using a jack or the like, and the vehicle 1 is retracted to the front wheel motor 11 by a driving operation. Generates torque in the direction of Further, in order to release the front parking lock 15, the ECU 20 may perform control such that the rear wheel motor 12 is stopped and only the front wheel motor 11 generates a backward torque. With such torque, as shown in FIGS. 3A to 3C, the parking lock 15 is unlocked by an external force, and the arm 102 is maintained at the unlocked position p3.

The method of releasing the front parking lock 15 with the front wheels 2 floating is not limited to the method of driving the front wheel motor 11, and a method of manually rotating the front wheels 2 in the backward direction may be used. Even with such an operation, the lock can be unlocked by rotating the lock gear 101 as described above. Since the parking lock 15 can be manually released, even when the electricity of the high-voltage battery 17 is exhausted, the parking lock 15 can be released and the vehicle 1 can be towed by another vehicle, for example.

When the front parking lock 15 can be unlocked, the rear parking lock 16 can be unlocked by the method described in the above parking lock abnormality avoiding operation 1. As a result, the occupant can move the vehicle 1 by traveling, for example, to a maintenance area where the parking locks 15 and 16 are repaired.

In the above example, the method of unlocking from the front parking lock 15 has been described, but it is also possible to unlock from the rear parking lock 16 by the same procedure.

As described above, according to the parking lock device of this embodiment, the vehicle 1 can be locked so as not to move by electrical control. Further, even when the actuators 15B and 16B of the parking lock device become inoperable while the vehicle 1 is locked, the lock can be released by performing an operation of applying a torque in a predetermined direction to the front wheels 2 or the rear wheels 3. .. Therefore, it becomes possible to drive the vehicle 1 to the maintenance ground, for example, while preventing the vehicle 1 from becoming stationary.

Further, according to the parking lock device of the present embodiment, torque can be independently applied to the front wheels 2 and the rear wheels 3 from the front wheel motor 11 and the rear wheel motor 12. Therefore, even if the actuators 15B and 16B become inoperable by both the front and rear parking locks 15 and 16, one of the front wheel 2 and the rear wheel 3 is floated to drive the front wheel motor 11 or the rear wheel motor. The lock can be released by driving 12.

Further, according to the parking lock device of the present embodiment, the actuators 15B and 16B can apply a force equal to or more than a predetermined value to move the operating portion, and therefore, by applying a torque in the opposite direction to the lock gear 101, the arm 102 can be moved. Can be moved to unlock. Further, when the lock is released, the arm 102 can be maintained at the release position p3.

(First modification)
FIG. 5: is explanatory drawing which shows the process in which the parking lock apparatus of the 1st modification is released by an external force, and (A)-(C) shows the 1st process to the 3rd process, respectively.

The parking lock device of the first modification is different in the configurations of the parking lock mechanism 15Aa and the actuator 15Ba, and the other parts are similar to those of the above-described embodiment. Therefore, only different configurations will be described in detail, and similar portions will be given the same reference numerals and description thereof will be omitted.

The parking lock mechanism 15Aa of the first modified example includes a lock gear 101, an arm 102a, a movable stopper 104, and a biasing member 105. The arm 102a is provided with a lock claw 103 that meshes with the teeth of the lock gear 101.

The actuator 15Ba is, for example, a solenoid type actuator, and operates the operating unit 106 by electric power. The actuator 15Ba is supported by the fulcrum f3, and the tip of the actuating portion 106 is connected to the arm 102a.

The movable stopper 104 is displaceably supported in a state in which a biasing force is applied so as to come into contact with the tip portion g1 of the arm 102a. The biasing force is applied by the biasing member 105 in the direction toward the arm 102a.

According to such a configuration, the actuator 15Ba drives the actuating portion 106 so as to push it out or pull it back, so that the lock claw 103 is brought into a meshing position and a non-meshing position of the lock gear 101. Can be displaced. As a result, the parking lock mechanism 15Aa can be switched between the locked state and the released state.

On the other hand, when the actuator 15Ba becomes inoperable when the parking lock mechanism 15Aa is in the locked state, torque is applied to the lock gear 101 in the reverse direction X2 to rotate the lock gear 101, as shown in FIGS. As described above, the lock of the lock gear 101 can be released. At that time, as shown in FIG. 5B, when the lock gear 101 pushes the arm 102a back to the release position p3, the movable stopper 104 pushes the tip portion g1 of the arm 102a toward the retracted position p1. As a result, the arm 102 moves toward the retracted position p1 and the lock gear 101 and the lock claw 103 are maintained at positions separated from each other.

As described above, according to the parking lock device of the first modified example, even when the actuator 15Ba becomes inoperable and torque is applied to release the lock, the lock gear 101 and the lock claw 103 are separated from each other and stable. The unlocked state can be obtained.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. For example, the rotation direction of the front wheels 2 locked by the front parking lock 15 and the rotation direction of the rear wheels 3 locked by the rear parking lock 16 may be opposite to each other. Not limited. Further, in the above-described embodiment, the configuration is shown in which the arm 102 is rotated to move the lock claw 103, but if the lock claw can be moved, the actuator may directly move the lock claw without using the arm. Further, in the above-described embodiment, the electric actuator is shown as the drive unit that drives the lock claw, but an electric motor may be applied. In the above embodiment, the two parking locks 15 and 16 lock the front wheel 2 and the rear wheel 3 separately. However, in the case of a vehicle that employs an in-wheel motor that drives four wheels with four motors, four parking locks that separately lock the four wheels may be provided. Further, in the above embodiment, an example in which the two power sources are electric motors has been shown, but one may be an engine and the other may be a motor, for example, one is a hybrid power source of an engine and a motor, and the other is a motor. It is also possible to

Further, in the above embodiment, an example in which the parking lock device is applied to a vehicle having two power sources capable of independently driving the front wheels and the rear wheels has been shown, but a vehicle having one power source may be applied. Good. FIG. 6 is a configuration diagram showing a modified example in which the parking lock device of the embodiment is applied to a vehicle having one power source, (A) shows a first example, and (B) shows a second example.

For example, as shown in FIG. 6(A), a vehicle 1A having one power source 31 and transmission mechanisms 32-37 for transmitting power to the front wheels 2 and the rear wheels 3 may be applied. In this case, the transmission mechanism 35 for transmitting the power of the front wheels 2 may be provided with the front parking lock 15, and the transmission mechanism 37 for transmitting the power of the rear wheels 3 may be provided with the rear parking lock 16. The transmission mechanisms 32 to 37 include a clutch (34) capable of connecting/disconnecting the power of the front wheels 2 and a clutch (36) capable of connecting/disconnecting the power of the rear wheels 3. With such a configuration, the transmission of power to the front wheels 2 and the transmission of power to the rear wheels 3 can be switched by switching the clutches (34, 36). Therefore, the lock can be released by a procedure similar to that of a vehicle in which the power source for the front wheels 2 and the power source for the rear wheels 3 are separately provided.

Further, as shown in FIG. 6B, a vehicle 1B having one power source 41 and transmission mechanisms 42 to 45 for transmitting power to the front wheels 2 and the rear wheels 3 may be applied. In this case, the front parking lock 15 may be provided in the transmission mechanism 43 that transmits the power of the front wheels 2, and the rear parking lock 16 may be provided in the transmission mechanism 45 that transmits the power of the rear wheels 3. The transmission mechanisms 42 to 45 include a clutch (44) capable of connecting and disconnecting the power of the rear wheel 3. With such a configuration, when the two parking locks 15 and 16 become inoperable in the locked state, first, the clutch (44) is disengaged to output the torque to the transmission mechanism 43 of the front wheel 2. First, the front parking lock 15 is unlocked. Then, the clutch (44) may be connected to output torque to the transmission mechanism 45 of the rear wheel 3 to unlock the rear parking lock 16.

Further, as long as the vehicle has one power source, an electric vehicle having one running motor or an engine vehicle having one engine may be adopted. In addition, the details shown in the embodiments can be appropriately changed without departing from the spirit of the invention.

1, 1A, 1B Vehicle 2 Front wheel (first drive wheel)
3 rear wheels (second drive wheel)
11 Front wheel motor (power source)
12 Rear wheel motor (power source)
13 transmission mechanism 14 transmission mechanism 15 front parking lock 15A parking lock mechanism (first parking lock mechanism)
15B actuator (first drive unit)
15Ba actuator (first drive)
16 Rear parking lock 16A Parking lock mechanism (second parking lock mechanism)
16B actuator (second drive unit)
19 shift operation unit 20 ECU
31, 41 Power source 32-37, 42-45 Transmission mechanism 101 Lock gear (first lock gear, second lock gear)
102, 102a Arm 103 Lock claw (first lock claw, second lock claw)
104 movable stopper 105 biasing member p1 retracted position p2 locked position p3 released position

Claims (3)

It is provided in the middle of the power transmission path of the first drive wheel, locks the rotation of the first drive wheel in one direction in the locked state, and unlocks the lock state by rotation of the first drive wheel in the opposite direction. A first parking lock mechanism,
A first drive unit driven by electric power to switch the first parking lock mechanism between a locked state and a released state;
It is provided in the middle of the power transmission path of the second drive wheel, locks the rotation of the second drive wheel in one direction in the locked state, and unlocks the lock state by the rotation of the second drive wheel in the opposite direction. A second parking lock mechanism,
A second drive unit that is driven by electric power to switch the second parking lock mechanism between a locked state and a released state;
Equipped with
Parking in which the rotation direction of the first drive wheel locked by the first parking lock mechanism and the rotation direction of the second drive wheel locked by the second parking lock mechanism are opposite directions. Locking device. The parking lock device according to claim 1, wherein the first drive wheel and the second drive wheel can be separately driven by different power sources. The first parking lock mechanism has a first lock gear connected to a midway of a power transmission path of the first drive wheel, and a meshing position and a non-meshing position of the first lock gear by the first driving unit. And a first lock claw displaceable between
The first driving unit is an actuator in which an operating unit is directly or indirectly connected to the first lock pawl and the operating unit can be displaced without electric power when a force of a predetermined value or more is applied to the first lock pawl. Or a motor,
The second parking lock mechanism includes a second lock gear connected to a middle portion of a power transmission path of the second drive wheel, and a meshing position and a non-meshing position of the second lock gear by the second drive unit. A second lock claw that can be displaced between
The second driving unit is an actuator in which an operating unit is directly or indirectly connected to the second lock pawl and the operating unit can be displaced without power when a force of a predetermined value or more is applied to the second lock pawl. Or it is a motor, The parking lock device of Claim 1 or Claim 2 characterized by the above-mentioned.

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