JP2019183879A - Lock device - Google Patents

Abstract

To enable a lock device to get out of a situation where a lock release state is maintained due to a trouble such as damage.SOLUTION: A park module 1A includes: a park actuator 9; a parking pole 3; and a link lever 8. The link lever 8 is held on a case 12A by a shaft holding spring 20. The shaft holding spring 20 maintains an engagement state between the link lever 8 and the park actuator 9 and allows manual release of the engagement state.SELECTED DRAWING: Figure 4B

Description

  The present invention relates to a locking device.

  A parking lock device for performing parking lock of a vehicle is known. Patent Document 1 discloses a vehicle parking lock device in which a park rod is moved by an actuator.

JP 2014-80110 A

  The park lock device may be provided with a solenoid device for locking the actuator. If the actuator is locked at the park lock release position by the solenoid device, the park lock release state can be maintained even if the hydraulic pressure of the actuator is lost while the vehicle is running. Therefore, it is possible to prevent parked while the vehicle is running.

  On the other hand, if the solenoid device is lost while the park lock release state is maintained, the park lock remains released and the park lock device cannot be set to the park lock state. As a result, there is a risk that such an attempt cannot be made even if the vehicle is transported or maintained in the park lock state.

  The present invention has been made in view of such problems, and an object of the present invention is to make it possible to escape from a state in which the unlocked state is maintained due to a defect such as a defect.

  A locking device according to an aspect of the present invention includes an actuator, an operating member that locks and unlocks a target to be locked in accordance with the operation of the actuator, the actuator and the operating member, and a force of the actuator. A link mechanism for transmitting to the actuating member. The link mechanism is held on the case member by a holding member. The holding member maintains the engaged state between the link mechanism and the actuator, and permits manual release of the engaged state.

  According to this aspect, since the holding member that maintains the engaged state between the link mechanism and the actuator is configured to allow manual release of the engaged state, the engaged state can be manually released. become. For this reason, it is possible to escape from the state in which the unlocked state is maintained due to a defect such as a defect.

It is FIG. 1 of the schematic block diagram of a park module. It is FIG. 2 of the schematic block diagram of a park module. It is FIG. 1 which shows the principal part of a park module. It is FIG. 2 which shows the principal part of a park module. It is FIG. 3 which shows the principal part of a park module. It is FIG. 4 which shows the principal part of a park module. It is FIG. 1 of the figure explaining manual operation of a park module. It is FIG. 2 of the figure explaining the manual operation of a park module. It is a schematic block diagram of the park module concerning 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

(First embodiment)
1 and 2 are schematic configuration diagrams of the park module 1A. In FIG. 1, the park module 1A is shown in the park lock engagement state PE. In FIG. 2, the park module 1A is shown in the park lock release state PR.

  The park module 1 </ b> A is a park lock device, is provided in the vehicle together with the transmission, and mechanically locks the output shaft of the transmission. The park module 1A includes a parking gear 2, a parking pole 3, a park rod 4, a cam 5, a cam spring 6, a sleeve 7, a link lever 8, a park actuator 9, a return spring 10, and a solenoid device. 11.

  The parking gear 2 is fixed to the output shaft of the transmission that constitutes the drive shaft of the vehicle, and rotates and stops together with the output shaft. The parking gear 2 and further the drive shaft of the vehicle constitute a lock target of the park module 1A. A parking pole 3 is engaged with the parking gear 2.

  The parking pole 3 is an operating member and swings according to the movement of the park rod 4. When the parking pole 3 swings, the engagement state between the parking gear 2 and the parking pole 3 is changed.

  As shown in FIG. 1, when the parking gear 2 and the parking pole 3 are engaged, the parking gear 2 is mechanically locked and the output shaft is also locked. As a result, the park module 1A enters the park lock engagement state PE, and the movement of the vehicle is restricted.

  As shown in FIG. 2, in a state where the engagement between the parking gear 2 and the parking pole 3 is released, the parking gear 2 and the output shaft are unlocked, and the parking gear 2 and the output shaft can be rotated. As a result, the park module 1A enters the park lock release state PR, and the movement restriction of the vehicle is released.

  The park rod 4 is moved by the park actuator 9 to the park lock position shown in FIG. 1 and the non-park lock position shown in FIG.

  A cam 5 is attached to one end side of the park rod 4. The cam 5 contacts the parking pole 3 and swings the parking pole 3 according to the movement of the park rod 4. The cam 5 engages the parking gear 2 and the parking pole 3 when the park rod 4 is in the park lock position shown in FIG. The cam 5 releases the engagement between the parking gear 2 and the parking pole 3 when the park rod 4 is in the non-park lock position shown in FIG. The cam spring 6 biases the cam 5 toward the parking pole 3 when the park rod 4 is in the park lock position shown in FIG.

  The sleeve 7 is provided on the side opposite to the parking pole 3 with respect to the park rod 4. The sleeve 7 is in contact with the cam 5 or the park rod 4 from the side opposite to the parking pole 3, thereby maintaining the contact state between the parking pole 3 and the cam 5 or the park rod 4.

  One end of the link lever 8 is connected to the other end of the park rod 4. The link lever 8 transmits the force of the park actuator 9 to the park rod 4. The link lever 8 rotates around the rotation axis to move the park rod 4 in the parking lock release direction when the park actuator 9 is extended, and to move the park rod 4 in the park lock direction when the park actuator 9 is shortened. . For this reason, in the park actuator 9, the extension operation is a park lock release operation, and the shortening operation is a park lock operation. An attachment portion 8 a for the return spring 10 is provided at one end portion of the link lever 8. The link lever 8 will be further described later.

  The park actuator 9 is a hydraulic actuator and drives the park rod 4. The park actuator 9 moves the park rod 4 to the park lock position shown in FIG. 1 when the P range, that is, the parking range is selected. The park actuator 9 moves the park rod 4 to the non-park lock position shown in FIG. 2 when a range other than the P range is selected.

  Thus, according to the operation of the park actuator 9, the parking gear 2 is locked and unlocked by the parking pole 3, and accordingly, the drive shaft of the vehicle is locked and unlocked.

  The park actuator 9 includes a cylinder 91, a piston 92, and a pressure receiving chamber 93. The cylinder 91 accommodates the piston 92, and the piston 92 slides in the cylinder 91. The piston 92 has a piston portion 921 and a rod portion 922.

  The piston part 921 slides in the cylinder 91. The piston portion 921 is provided with a seal ring that seals the clearance with the cylinder 91. The piston portion 921 has a pressure receiving surface 92 a on the bottom side of the cylinder 91.

  The rod portion 922 is connected to the piston portion 921 from the side opposite to the pressure receiving surface 92a. The rod portion 922 is provided so as to protrude from the cylinder 91 to the outside. A portion of the rod portion 922 that protrudes outside from the cylinder 91 in the park lock state shown in FIG. 1 engages with the other end portion of the link lever 8.

  The rod portion 922 is provided with an engaging portion 92b and an engaging portion 92c. The solenoid device 11 is engaged with the engaging portion 92b in the park lock engagement state PE shown in FIG. The solenoid device 11 is engaged with the engaging portion 92c in the park lock released state PR shown in FIG. The piston 92 may be composed of a single member or a combination of a plurality of members.

  The pressure receiving chamber 93 is formed by a cylinder 91, a piston 92, and the like. A pressure receiving surface 92a is located in the pressure receiving chamber 93, and oil is supplied from the hydraulic circuit through an oil passage.

  The return spring 10 biases the park rod 4 in the park lock engagement direction. The return spring 10 can be constituted by, for example, a torsion spring.

  The solenoid device 11 is a lock device of the park module 1A, and locks the park actuator 9, that is, locks the operation position of the park actuator 9. Specifically, the solenoid device 11 locks the piston 92.

  As described above, the solenoid device 11 engages with the engaging portion 92b in the park lock engagement state PE shown in FIG. 1, and engages with the engagement portion 92c in the park lock release state PR shown in FIG. Accordingly, the piston 92 is locked and the movement of the park rod 4 is stopped in each state of the park lock engagement state PE and the park lock release state PR. As a result, the park module 1A is locked in each of these states.

  By locking the solenoid device 11 in the park lock release state PR shown in FIG. 2, the park lock release state PR can be maintained even if the hydraulic pressure of the park actuator 9 is lost while the vehicle is running. Therefore, it is possible to prevent parked while the vehicle is running.

  On the other hand, if the solenoid device 11 is lost while maintaining the park lock release state PR, the park lock remains released, and it is impossible to escape from the park lock release state PR. For this reason, the park module 1A cannot be brought into the park lock engagement state PE. As a result, there is a concern that such a situation cannot be achieved even if the vehicle is transported or maintained in the park lock engagement state PE.

  In view of such circumstances, the park module 1A is configured in the present embodiment as described below.

  3A to 3D are views showing the main part of the park module 1A. FIG. 3A is a front view showing a main part in the park lock engagement state PE, and FIG. 3B is a side view corresponding to FIG. 3A. FIG. 3C is a front view showing a main part in the park lock release state PR, and FIG. 3D is a side view corresponding to FIG. 3C. In FIG. 3A and FIG. 3C, a main part is shown in a state where a manual lever 823 described later is removed.

  The link lever 8 includes a park lever 81 and a piston lever 82. The park lever 81 is engaged with the park rod 4. The park lever 81 has an insertion hole 811 and a spline hole 812.

  The insertion hole 811 is an engaging portion with the park rod 4 and is provided at one end of the park lever 81. The insertion hole 811 allows the engagement shaft 4a of the park rod 4 to be inserted rotatably. The spline hole 812 is an engagement portion with the piston lever 82 and is provided at the other end portion of the park lever 81.

  The piston lever 82 engages with the piston 92. The piston lever 82 includes a shaft 821, a piston contact portion 822, and a manual lever 823. The shaft 821 is an engaging portion with the park lever 81 and is provided at one end of the piston lever 82. The shaft 821 constitutes the rotation axis of the link lever 8. The shaft 821 has a spline groove, and the spline groove slidably fits in the spline hole 812.

  For this reason, the piston lever 82 is configured to rotate integrally with the park lever 81 when rotating, while being able to move relative to the park lever 81 in the rotation axis direction of the link lever 8.

  The shaft 821 is rotatably supported by a case 12A that is a case member that covers the link lever 8 and the park module 1A. The shaft 821 is inserted through the park lever 81 and the case 12A in this order when viewed from the piston contact portion 822 side. A portion of the shaft 821 that protrudes outside the case 12A while being inserted through the case 12A is provided with a manual lever 823 that is used in manual operation described later.

  The piston contact portion 822 is an engagement portion with the piston 92 and is provided at the other end portion of the piston lever 82. The piston abutting portion 822 has a disk shape and abuts on the piston 92 at the outer peripheral portion. The abutting state between the piston abutting portion 822 and the piston 92 is maintained by the return spring 10 and the shaft retaining spring 20 which are retaining members each formed of an urging member as described below.

  The return spring 10 generates a biasing force in a direction that biases the piston contact portion 822 toward the piston 92. Thereby, the contact state between the piston contact portion 822 and the piston 92 is maintained in the operation direction of the park actuator 9.

  The shaft holding spring 20 is provided in the park module 1A with the shaft 821 inserted therethrough. The shaft holding spring 20 is provided between the park lever 81 and the piston contact portion 822, and generates an extension-side spring force in contact with these.

  For this reason, the shaft holding spring 20 presses the piston lever 82 including the shaft 821 against the case 12A. At this time, in the park module 1A, the manual lever 823 provided on the shaft 821 is pressed against the case 12A so as to serve as a contact portion with the case 12A. As a result, the link lever 8 is held by the case 12 </ b> A by the shaft holding spring 20.

  As described above, the shaft holding spring 20 maintains the contact state between the piston contact portion 822 and the piston 92 in the axial direction of the shaft 821 by maintaining the position of the shaft 821 in the axial direction.

  The park module 1A is configured in this manner, thereby enabling manual operation described below.

  4A and 4B are explanatory diagrams of manual operation of the park module 1A. 4A and 4B show a state in which parking lock is performed by manual operation from the parking lock release state PR shown in FIGS. 3C and 3D.

  As shown in FIGS. 4A and 4B, the solenoid device 11 locks the park actuator 9. If the solenoid device 11 is lost in this state, the park actuator 9 remains locked at the park lock release position, and the park actuator 9 cannot perform park lock.

  In this case, in this embodiment, as indicated by an arrow AR1 in FIG. 4B, first, the link lever 8 is pulled in the direction in which the link lever 8 is pulled out from the case 12A, that is, in the direction in which the engagement between the link lever 8 and the piston 92 is released. Move manually.

  That is, in the present embodiment, the engagement between the link lever 8 and the piston 92 can be released by a manual operation indicated by the arrow AR1. As a result, even when the solenoid device 11 is missing, the parking lock can be performed by rotating the link lever 8 in the parking lock direction by the manual operation indicated by the arrow AR2.

  The link lever 8 constitutes a link mechanism that transmits the force of the park actuator 9 to the parking pole 3. The link lever 8 engages with the parking pole 3 via the park rod 4 and the cam 5 while engaging by directly contacting the piston 92. The link lever 8 may be grasped as constituting a link mechanism including the link lever 8 together with the park rod 4, the cam 5, the cam spring 6, the return spring 10, and the like. In this connection, the manual operation can also be performed, for example, by moving the park rod 4 directly.

  Next, main effects of the present embodiment will be described.

  The park module 1 </ b> A includes a park actuator 9, a parking pole 3, and a link lever 8. The link lever 8 is held by the case 12 </ b> A by the shaft holding spring 20. The shaft holding spring 20 maintains the engaged state between the link lever 8 and the park actuator 9 while allowing manual release of the engaged state.

  According to such a configuration, the shaft holding spring 20 that maintains the engaged state between the link lever 8 and the park actuator 9 is configured to allow manual release of the engaged state. It can be released manually. For this reason, it is possible to escape from the state in which the park lock release state PR is maintained due to the loss of the solenoid device 11 (effect corresponding to claim 1).

  The shaft holding spring 20 allows manual release of the engaged state between the link lever 8 and the park actuator 9 by deformation.

  According to such a configuration, manual release of the engaged state between the link lever 8 and the park actuator 9 is permitted by the deformation of the shaft holding spring 20. That is, since the shaft holding spring 20 itself as a holding member has a function of allowing manual release, there is no need to further provide a mechanism for allowing manual release. As a result, compared with such a case, the configuration can be simplified and the manual operability can be improved (effect corresponding to claim 2).

  The shaft holding spring 20 as a holding member is a spring, and allows manual release performed by manually moving the link lever 8 against the spring force as manual release of the engaged state.

  When the park module 1A has such a configuration, it is possible to obtain high simplicity and manual operability (effect corresponding to claim 3).

  The park actuator 9 as an actuator in the lock device performs a park lock operation and a park lock release operation, and the parking pole 3 as an actuating member locks and unlocks the parking gear 2 in accordance with the operation of the park actuator 9, and thus the vehicle. The drive shaft is locked and unlocked.

  In the case of such a configuration, the park module 1A enables parking lock by enabling the vehicle to be released from the park lock release state PR, and enables transportation and maintenance of the vehicle in the park lock engagement state PE. (Effect corresponding to claim 5).

(Second Embodiment)
FIG. 5 is a diagram illustrating a main part of the park module 1B according to the second embodiment. The park module 1B is different from the park module 1A in that a stopper plate 30 is provided instead of the shaft holding spring 20 as a holding member and a case 12B is provided instead of the case 12A.

  Case 12B is the same as case 12A except for the following points. That is, the case 12B has a mounting portion 12a of a mounting bolt BLT for mounting the stopper plate 30 to the case 12B. The case 12B has a holding portion 12b that holds the position of the park lever 81 in the axial direction of the shaft 821.

  The stopper plate 30 is provided with respect to the link lever 8 in a state where the link lever 8 is in contact with the case 12 </ b> B by the manual lever 823 and engaged with the piston 92. In this state, the stopper plate 30 is in contact with the end surface of the shaft 821 protruding from the case 12B. In this state, the stopper plate 30 is detachably provided on the case 12B by being attached to the case 12B with the mounting bolt BLT. The stopper plate 30 may be provided as a biasing member that generates a biasing force that biases the link lever 8, or may be provided as a regulating member that regulates the position of the link lever 8 without generating a biasing force. .

  The stopper plate 30 provided in this way also holds the link lever 8 in the case 12B and maintains the engaged state between the link lever 8 and the park actuator 9, like the shaft holding spring 20 described in the first embodiment. To do.

  On the other hand, the stopper plate 30 allows manual release of the engaged state by removal. When the stopper plate 30 is detached, the stopper plate 30 allows manual release performed by manually moving the link lever 8 as manual release of the engaged state.

  Thus, allowing manual release is provided not only when the holding member itself has a function of allowing manual release but also by being engaged with the holding member, such as the mounting portion 12a and the mounting bolt BLT. The case where it is configured to allow manual release by an auxiliary unit that allows manual release is included.

  According to the park module 1B having such a configuration, when the engagement state is manually released, the stopper plate 30 may be removed and the link lever 8 may be manually moved. For this reason, it is possible to obtain sufficiently high simplicity and manual operability in view of the fact that manual release is required when the solenoid device 11 is missing or the like (effect corresponding to claim 4).

  The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

  In the above-described embodiment, the case where the park module 1A and the park module 1B constitute a lock device has been described.

  However, for example, when the transmission is equipped with a shift-by-wire system, the lock device includes a shift actuator that switches a so-called manual valve that is a switching valve that is switched according to a shift operation. There may be. In this case, a solenoid device that locks and unlocks the shift actuator can be provided as the solenoid device.

  In the above-described embodiment, the case has been described in which the failure in which the park lock release state PR is maintained is the loss of the solenoid device 11. However, the malfunction may be, for example, a hydraulic circuit in which the park actuator 9 remains in the park lock release position or a loss of a link mechanism.

  In 2nd Embodiment, the case where the stopper plate 30 as a holding member was provided so that attachment or detachment was possible was demonstrated. However, the stopper plate 30 may be provided so as to allow manual release by movement without attachment / detachment such as slide and rotation.

1A, 1B Park module (lock device)
2 Parking gear (locked)
3 Parking pole (actuating member)
4 Park rod 8 Link lever (link mechanism)
9 Park actuator (actuator)
10 Return spring 11 Solenoid device 12A, 12B Case (case member)
20 Shaft holding spring (holding member)
30 Stopper plate (holding member)

Claims (5)

An actuator,
An actuating member that locks and unlocks a lock target according to the operation of the actuator;
A link mechanism that engages the actuator and the actuating member, and transmits the force of the actuator to the actuating member;
With
The link mechanism is held on the case member by a holding member,
The holding member maintains an engaged state between the link mechanism and the actuator, while allowing manual release of the engaged state.
A locking device characterized by that. The locking device according to claim 1,
The holding member allows the manual release by movement including deformation or removal;
A locking device characterized by that. The locking device according to claim 1 or 2,
The holding member is a spring, and allows manual release performed by manually moving the link mechanism against a spring force as the manual release.
A locking device characterized by that. The locking device according to claim 1 or 2,
The holding member is a stopper plate detachably provided on the case member, and allows manual release performed by manually moving the link mechanism as the manual release in the detached state.
A locking device characterized by that. The lock device according to any one of claims 1 to 4,
The actuator performs a park lock operation and a park lock release operation,
The actuating member locks and unlocks the drive shaft of the vehicle according to the operation of the actuator.
A locking device characterized by that.

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