Lock device of opening / closing member for vehicle

Abstract

To further reduce a load when delivering a striker to a closer by a closing action of an opening / closing member.SOLUTION: A lock device of an opening / closing member for a vehicle comprises: a closer that starts engagement with a latch when the latch is positioned at an engagement start position, and pulls in a striker while being engaged with the latch to turn the latch in a closing direction so as to mesh with the striker; and an energizing member that energizes the latch in an opening direction so that the opening / closing member can be popped up when meshing between the latch and the striker is released. The energizing member is attached to a separate member different from the latch. The separate member engages with the latch until the latch rotates from a fully locked position toward the opening direction and reaches a predetermined rotation angle, and energizes the latch in the opening direction via the separate member. The predetermined rotation angle is set to be on the closing direction side relative to the engagement start position.SELECTED DRAWING: Figure 23

Description

Technical Field

[0001] This specification discloses a locking device for an opening / closing member of a vehicle.

Background Art

[0002] Conventionally, as a locking device for this type of opening / closing member of a vehicle, there has been proposed one including a rotatable pole to which one side of a release cable is coupled, a latch that is connected to the pole via a pole spring and rotates in conjunction with the rotation of the pole and can be fastened and fixed to a hood striker, and a pop-up spring formed so that one side thereof is in contact with the hood striker (see, for example, Patent Document 1). The pop-up spring is deformed when the hood and the striker are fastened and fixed to the latch when the hood is closed, and pulls the hood striker out of the latch by the restoring force acting when the hood striker is released from the fastening when the hood is opened.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Incidentally, in a locking device that drives a latch with a closer to draw in a striker by the latch to lock an opening / closing member in a fully closed position, and when releasing the lock, the striker is pushed out from the latch by the biasing force from a pop-up spring (biasing member) to pop up the opening / closing member in the opening direction, it is necessary to move the opening / closing member in the closing operation electrically or manually up to the position of the latch that starts to draw in the striker. Since the pop-up spring applies a relatively large biasing force to the latch to pop up the opening / closing member, if the biasing force of the pop-up spring in the opening direction continues to act on the latch, an excessive load will be applied when the striker is transferred to the closer during the closing operation of the opening / closing member.

[0005] The locking device for a vehicle opening / closing member of the present disclosure locks the opening / closing member in the fully closed position by driving a latch with a closer to draw in a striker by the latch, and when releasing the lock, the striker is pushed out from the latch by the biasing force of a biasing member to pop up the opening / closing member in the opening direction. The main object is to further reduce the load when the striker is transferred to the closer during the closing operation of the opening / closing member.

Means for Solving the Problems

[0006] The locking device for a vehicle opening / closing member of the present disclosure has adopted the following means to achieve the above main object.

[0007] The locking device for a vehicle opening / closing member of the present disclosure includes an opening / closing member of a vehicle and a base member fixed to one of the vehicle bodies, a latch that is rotatable with respect to the base member and can engage with a striker fixed to the other of the opening / closing member and the vehicle body, and a pole that is rotatable with respect to the base member and engages with the latch to restrict the rotation of the latch. A closer that starts engaging with the latch in a state where the latch is located at the engagement start position, and rotates the latch in the closing direction around the axis of the rotation shaft so as to engage with the striker and mesh with the latch in a state of being engaged with the latch. A locking device for a vehicle opening / closing member that has and locks the opening / closing member in the fully closed position by meshing the striker with the latch. When the engagement between the latch and the striker is released, an urging member is provided that urges the latch in the opening direction opposite to the closing direction around the axis of the rotation shaft so that the opening / closing member can pop up. The urging member is attached to a separate member different from the latch, and until the latch rotates in the opening direction from the full lock position and reaches a predetermined rotation angle, the separate member engages with the latch and urges the latch in the opening direction around the axis of the rotation shaft via the separate member. The gist is that the predetermined rotation angle is a rotation angle on the closing direction side rather than the engagement start position.

[0008] The locking device for a vehicle opening / closing member of the present disclosure includes a closer that engages with the latch in a state where the latch is located at the engagement start position and rotates the latch in the closing direction, and an urging member that urges the latch in the opening direction to pop up the opening / closing member. The urging member is attached to a separate member different from the latch, and until the latch rotates in the opening direction from the full lock position and reaches a predetermined rotation angle, the separate member engages with the latch and urges the latch in the opening direction via the separate member. The predetermined rotation angle is set to a rotation angle on the closing direction side rather than the engagement start position. Thereby, since the urging force of the urging member does not act on the latch on the opening direction side rather than the position (engagement start position) where the closer starts pulling in the striker, the load when delivering the striker to the closer (engagement start position) during the closing operation of the opening / closing member can be further reduced.

Brief Description of the Drawings

[0009]

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Embodiments for Carrying Out the Invention

[0010] Embodiments for carrying out the present disclosure will be described with reference to the drawings.

[0011] FIG. 1 is a perspective view of a vehicle 1 including a hood locking device 10 as a locking device for an opening / closing member of a vehicle according to the present disclosure. FIGS. 2 and 3 are front-side external perspective views of the hood locking device 10. FIG. 4 is a rear-side external perspective view of the hood locking device 10. FIG. 5 is an exploded perspective view of the hood locking device 10. Further, FIG. 6 is a schematic configuration diagram of the latch 20, FIG. 7 is a schematic configuration diagram of the pole 30, and FIG. 8 is an explanatory diagram showing the open state, half lock state, and full lock state of the latch 20. Further, FIG. 9 is a schematic configuration diagram of the pole 30, the open lever 40, and the sub lever 50. FIG. 10 is a schematic configuration diagram of the sub lever 50. FIG. 11 is a schematic configuration diagram of the close lever 60 and the hook member 65. Further, FIG. 12 is a control block diagram of the hood locking device 10 and the hood opening / closing device.

[0012] As shown in FIG. 1, the vehicle 1 includes a front trunk T as an accommodation space installed at the front part of the vehicle body 2, a hood 4 rotatably supported vertically with respect to the vehicle body 2 via a hinge 3 so as to cover the front trunk T, a telescopic support member 5 interposed between the vehicle body 2 and the hood 4, a hood opening / closing device (not shown) that electrically extends and retracts the support member 5 to open and close the hood 4, and a hood locking device 10 of the present embodiment that locks the hood 4 in the fully closed position. The hood locking device 10 is installed at the opening of the front trunk T so as to be engageable with a striker 6 fixed to the inner surface of the front end portion of the hood 4.

[0013] As shown in FIGS. 2 to 5, the hood locking device 10 includes a base member 11 fixed to the vehicle body 2 and having a striker groove 11a for receiving the striker 6, a cover member 12 fixed to the base member 11 so as to cover the inside of the hood locking device 10 together with the base member 11, a latch 20 rotatable with respect to the base member 11 and engageable with the striker 6 fixed to the hood 4, a pole 30 rotatable with respect to the base member 11 and engaging with the latch 20 to restrict the rotation of the latch 20, a close lever 60 engaging with the latch 20 and rotatable integrally therewith, a hook member 65 rotatably connected to the close lever 60, a closer drive device 70, an open lever 40 engaging with the pole 30 and rotatable integrally therewith, a sub lever 50 rotatably connected to the open lever 40, and a pop-up spring 64 for popping up the hood 4 to a slightly open position when the locked state (half-locked state) of the latch 20 is released.

[0014] The latch 20 is rotatable around the axis of a rotation shaft AX1 fixed to the base member 11. As shown in FIG. 6, the latch 20 has a locking portion 24 at a position radially spaced from the rotation shaft AX1, and the other end of a latch spring 26 (torsion spring) having one end locked to the base member 11 is locked to the locking portion 24. Thereby, the latch 20 is biased counterclockwise (open side for releasing the striker 6) in FIG. 6 around the axis of the rotation shaft AX1.

[0015] Further, as shown in FIG. 6, the latch 20 has first and second claw portions 21 and 22 that define a notch 23 that engages with the striker 6. The second claw portion 22 has an open engagement surface 22a that engages with the pole 30 in the open state (the state where the striker 6 is released), a half engagement surface 22b that engages with the pole 30 in the half-lock state (the state where the hood 4 is slightly opened), and a full engagement surface 22c that engages with the pole 30 in the full-lock state (the state where the hood 4 is fully closed). The open engagement surface 22a, the half engagement surface 22b, and the full engagement surface 22c are formed on the outer peripheral portion of the second claw portion 22 so as to be arranged in the clockwise direction in FIG. 6 in this order. The open engagement surface 22a is an arcuate surface centered on the rotation axis AX1. The half engagement surface 22b and the full engagement surface 22c are planar surfaces extending in the radial direction of the latch 20. The rotation angle of the latch 20 when the pole 30 engages with the half engagement surface 22b is referred to as the half-lock position, and the rotation angle of the latch 20 when the pole 30 engages with the full engagement surface 22c is referred to as the full-lock position. The distance ra from the center O of the rotation axis AX1 of the latch 20 to the open engagement surface 22a is longer than the distance rb from the center O of the rotation axis AX1 to the end of the half engagement surface 22b on the rotation axis AX1 side, and the distance rb is longer than the distance rc from the center O of the rotation axis AX1 to the end of the full engagement surface 22c on the rotation axis AX1 side.

[0016] Also, on the side surface of the second claw portion 22 (the surface on the axial direction side of the rotation axis AX1), as shown in FIG. 6, an engagement block portion 25 is formed that protrudes in the axial direction of the rotation axis AX1 and extends in an arc shape centered on the rotation axis AX1 from the vicinity of the full engagement surface 22c to the middle of the open engagement surface 22a. The engagement block portion 25 is formed with a hook engagement surface 25a with which a hook member 65 rotatably connected to the close lever 60 can engage, a hook contact surface 25b that is provided continuously in the circumferential direction and with which the hook member 65 can come into contact, and a pop-up engagement surface 25c with which the close lever 60 can engage so as to transmit the biasing force of the pop-up spring 64 to the latch 20 via the close lever 60. The hook engagement surface 25a is formed by a planar surface that extends radially from the rotation axis AX1 so that the hook member 65 can engage in a state where the latch 20 is located on the open side (engagement start position, retraction start position) from the half-lock position. The latch 20 can rotate integrally with the close lever 60 around the axis of the rotation axis AX1 in the clockwise direction (close side) in FIG. 7 by the power from the closer drive device 70 in a state where the hook member 65 is engaged with the hook engagement surface 25a. The hook contact surface 25b is formed by a surface that extends in an arc shape centered on the rotation axis AX1 from the end portion in the radial direction of the hook engagement surface 25a. The pop-up engagement surface 25c is formed by a planar surface that extends radially of the rotation axis AX1 on the open engagement surface 22a side of the second claw portion 22. The latch 20 can rotate integrally with the close lever 60 around the axis of the rotation axis AX1 in the clockwise direction (open side) in FIG. 7 by the biasing force of the pop-up spring 64 in a state where the close lever 60 is engaged with the pop-up engagement surface 25c.

[0017] The pole 30 is a plate-like member and is rotatable about the axis of a rotation axis AX2 fixed to the base member 11 parallel to the rotation axis AX1. As shown in FIGS. 4 and 7, the pole 30 has a locking portion 35 that is inserted into a guide hole 11c of a long hole formed in the base member 11 so as to be in an arc shape centered on the rotation axis AX2. One end of a pole spring 36 (coil spring) whose one end is locked to the base member 11 is locked to the locking portion 35. Thereby, the pole 30 is biased in the clockwise direction (one direction) in FIG. 7 about the axis of the rotation axis AX2.

[0018] Further, as shown in FIGS. 8(a), 8(b), and 8(c), the pole 30 has an engaging portion 31 extending in the radial direction of the rotation axis AX2 so as to be engageable with the open engaging surface 22a, the half engaging surface 22b, and the full engaging surface 22c of the latch 20. As the engaging portion 31 engages with the open engaging surface 22a, the half engaging surface 22b, and the full engaging surface 22c in order, the pole 30 rotates in the clockwise direction (one direction) in FIG. 8 about the axis of the rotation axis AX2. Further, as the pole 30 rotates in the counterclockwise direction (the other direction) in FIG. 8 about the axis of the rotation axis AX2, the engagement between the engaging portion 31 and the full engaging surface 22c and the half engaging surface 22b is released in order. The rotation angle of the pole 30 when the pole 30 engages with the latch 20 at the full engaging surface 22c is referred to as the full engagement rotation angle, and the rotation angle of the pole 30 when the pole 30 engages with the latch 20 at the half engaging surface 22b is referred to as the half engagement rotation angle. The rotation angle of the pole 30 when the pole 30 engages with the latch 20 at the open engaging surface 22a is referred to as the open engagement rotation angle.

[0019] Furthermore, the pole 30 includes a fully-released pressed portion 32 with which the open lever 40 can engage in the circumferential direction around the rotation axis AX2, a half-released pressed portion 33 with which the sub-lever 50 can engage in the circumferential direction around the rotation axis AX2, a first sub-lever support portion 34a that can support the sub-lever 50 at a position in the radial direction of the rotation axis AX2 where the sub-lever 50 can engage with the half-released pressed portion 33, and a second sub-lever support portion 34b that can support the sub-lever 50 at a position in the radial direction of the rotation axis AX2 where the sub-lever 50 cannot engage with the half-released pressed portion 33. The fully-released pressed portion 32 is a protruding portion that protrudes radially from the rotation axis AX2 so as to be pressed in the circumferential direction around the rotation axis AX2 by the open lever 40 at a position different from the engaging portion 31. The half-released pressed portion 33 is a surface that extends radially from the rotation axis AX2 so as to be pressed in the circumferential direction around the rotation axis AX2 by the sub-lever 50 at a position different from the engaging portion 31 and the fully-released pressed portion 32. The first sub-lever support portion 34a is a surface that extends in the circumferential direction (counterclockwise in FIG. 7) around the rotation axis AX2 from the end portion on the rotation axis AX2 side in the radial direction of the half-released pressed portion 33. The second sub-lever support portion 34b is a surface that extends in the circumferential direction (clockwise in FIG. 7) around the rotation axis AX2 from the end portion on the outer peripheral side in the radial direction of the half-released pressed portion 33.

[0020] The open lever 40 is a plate-like member that is superposed with the pole 30 in the axial direction of the rotation axis AX2, and as shown in FIG. 9, it is rotatable coaxially with the pole 30 around the axis of the rotation axis AX2. The open lever 40 has an engaging portion 42 that can engage with the pressed portion 32 for full release of the pole 30, and first and second operated portions 43 and 44 for operating (rotating) the open lever 40. The engaging portion 42 can engage with the pressed portion 32 for full release on the clockwise (one direction) side in FIG. 9 with respect to the pressed portion 32 for full release when the pole 30 is positioned at the rotation angle at full engagement, and cannot engage with the pressed portion 32 for full release when the pole 30 is positioned at the rotation angle at half engagement, and extends radially from the rotation axis AX2. In the present embodiment, the engaging portion 42 is configured as a bent portion that bends toward the pole 30 at the radially extending end from the rotation axis AX2. Thereby, the engaging portion 42 can be formed by simpler processing. The first operated portion 43 is formed on the outer peripheral portion of the open lever 40 so as to be engageable with a sector gear 74 that rotates by the operation of a closer drive device 70. The open lever 40 rotates counterclockwise (the other direction) in FIG. 9 as the sector gear 74 rotates in a state where the sector gear 74 is engaged with the first operated portion 43. The second operated portion 44 is formed at a position different from the first operated portion 43 on the outer peripheral portion of the open lever 40. One end of a cable 80 (see FIG. 3) is locked to the second operated portion 44, and the other end of the cable 80 is locked to a lock release lever (not shown) disposed in the vehicle interior. The open lever 40 rotates counterclockwise (the other direction) in FIG. 9 when the cable 80 is pulled by an operation of the lock release lever by an operator. Then, in the fully locked state where the pole 30 is positioned at the rotation angle at full engagement, when the open lever 40 rotates counterclockwise (the other direction) in FIG. 9, the engaging portion 42 of the open lever 40 engages with the pressed portion 32 for full release of the pole 30. Then, the pole 30 rotates counterclockwise (the other direction) integrally with the open lever 40 as the pressed portion 32 for full release is pressed by the open lever 40, and the engaging portion 31 disengages from the full engagement surface 22c of the latch 20. Thereby, the fully locked state can be released by the operation of the closer drive device 70 or the operation of the lock release lever.Here, the stroke amount (rotation amount) of the open lever 40 that rotates by one operation of the closer drive device 70 or one operation of the unlocking lever is an amount necessary to release the full lock state, that is, from the state where the engaging portion 31 of the pole 30 is engaged with the full engagement surface 22c (rotation angle at full engagement) to the state where the pole 30 is disengaged from the full engagement surface 22c (rotation angle at half engagement) in FIG. 9 in the counterclockwise direction (other direction). It is adjusted to be an amount obtained by adding a slight margin to the amount necessary for the pole 30 to rotate. In this embodiment, the release of the half-lock state can also be performed by stroking (rotating) the open lever 40 by approximately the same amount from the initial position after releasing the full lock state.

[0021] In addition, an arc-shaped guide hole 41 is also formed in the open lever 40. The guide hole 41 is formed to be arc-shaped around the rotation axis AX1 (rotation axis of the close lever 60) in a state where the open lever 40 is located at the initial position.

[0022] The sub lever 50 is a plate-like member interposed between the pole 30 and the open lever 40. As shown in FIG. 9, the base end portion is rotatably connected to the open lever 40 via a rotation axis AX3 parallel to the rotation axis AX2. The tip end portion of the sub lever 50 is a free end portion 51. As shown in FIG. 10, the sub lever 50 has an engaging portion 53 formed on a side portion between the base end portion and the free end portion 51, and a locking portion 52 formed on a side portion closer to the base end side than the engaging portion 53. As shown in FIG. 2, the other end of a sub lever spring 54, one end of which is locked to the cover member 12, is locked to the locking portion 52. In the present embodiment, the sub lever spring 54 is a coil spring, and biases the open lever 40 in the clockwise direction (one direction) in FIG. 9 around the axis of the rotation axis AX2 via the sub lever 50. In the present embodiment, the engaging portion 53 is configured as a bent portion bent toward the pole 30 side. Thereby, the engaging portion 53 can be formed by simpler processing. The engaging portion 53 is located in the vicinity of the second sub lever support portion 34b of the pole 30 in a state where the pole 30 is located at the full engagement rotation angle, and is in a state where it cannot engage with the half release pressed portion 33. Further, the engaging portion 53 is located in the vicinity of the first sub lever support portion 34a of the pole 30 in a state where the pole 30 is located at the half engagement rotation angle, and is in a state where it can engage with the half release pressed portion 33. In a state where the engaging portion 53 of the sub lever 50 is located in the vicinity of the first sub lever support portion 34a, that is, in a half-lock state where the pole 30 is located at the half engagement rotation, when the open lever 40 rotates counterclockwise (the other direction) in FIG. 9, the engaging portion 53 of the sub lever 50 engages with the half release pressed portion 33 of the pole 30. Then, as the open lever 40 rotates, the half release pressed portion 33 is pressed by the sub lever 50, and the pole 30 rotates counterclockwise (the other direction) in FIG. 9 from the half engagement rotation angle to the open engagement rotation angle integrally with the open lever 40. Thereby, similarly to the release of the full-lock state, the half-lock state can be released by operating (rotating) the open lever 40 by the operation of the closer drive device 70 or the operation of the lock release lever.Here, the rotation amount of the pole 30 from the full-engagement rotation angle to the half-engagement rotation angle and the rotation amount of the pole 30 from the half-engagement rotation angle to the open-engagement rotation angle are substantially the same, and the release of the full-lock state and the release of the half-lock state can each be performed by stroking (rotating) the open lever 40 by the same amount from the initial position. As a result, the full-lock state and the half-lock state can be individually released by a simple mechanism.

[0023] The close lever 60 is rotatable coaxially with the latch 20 around the axis of the rotation axis AX1. As shown in FIG. 11, the close lever 60 has an engaging portion 61 that can engage with the latch 20, a locking portion 62 to which a pop-up spring 64 for biasing the close lever 60 is locked, and an operated portion 63 for operating (rotating) the close lever 60. The engaging portion 61 extends in the radial direction of the rotation axis AX1 so as to be able to engage with a pop-up engaging surface 25c formed on the engaging block portion 25 of the latch 20. As shown in FIG. 4, the other end of the pop-up spring 64, one end of which is locked to the base member 11, is locked to the locking portion 62. In the present embodiment, the pop-up spring 64 is a coil spring, and biases the close lever 60 counterclockwise (open side) around the axis of the rotation axis AX1 in FIG. 11. The latch 20 engages with the engaging portion 61 of the close lever 60 at the pop-up engaging surface 25c and is biased to the open side around the axis of the rotation axis AX1 integrally with the close lever 60 by the biasing force of the pop-up spring 64. Thereby, when the half-lock state is released, the latch 20 (the second claw portion 22) can push out the striker 6 and pop up the hood 4 to a slightly open state. The locking portion 62 is inserted into a guide hole 11b formed in an arc shape around the rotation axis AX1 in the base member 11. The guide hole 11b defines the range to which the biasing force of the pop-up spring 64 extends to the close lever 60 (latch 20). By using the guide hole 11b, the biasing force of the pop-up spring 64 can be more easily applied to the latch 20 only within the necessary range. In the present embodiment, the guide hole 11b is formed so as to bias the latch 20 to the open side from the stroke end closer to the close side than the full-lock position to the position (predetermined rotation angle) more open than the half-lock position.

[0024] The operated portion 63 is formed in a columnar shape so as to project in a direction parallel to the rotation axis AX2 from a position separated from the rotation axis AX2 of the close lever 60 so that the sector gear 74 can engage therewith. As the sector gear 74 rotates, the close lever 60 rotates clockwise (close side) around the axis of the rotation axis AX1 in FIG. 11 by the operated portion 63 being pressed.

[0025] As shown in FIG. 3, the closer drive device 70 includes a closer motor 71, an output gear 73 that meshes with a sector gear 74, and a speed reduction gear mechanism 72 that reduces the power from the closer motor 71 and transmits it to the output gear 73. The sector gear 74 is rotatable about the axis of a rotation axis AX5 parallel to the rotation axes AX1 and AX2, and has a fan-shaped gear portion 74a that meshes with the output gear 73, a closing engagement portion 74b that extends radially from the rotation axis AX5 at a position different from the gear portion 74a, and an opening engagement portion 74c that extends radially from the rotation axis AX5 at a position different from the gear portion 74a and the closing engagement portion 74b. The sector gear 74 rotates counterclockwise in FIG. 3 by the power transmitted from the closer drive device 70, so that the closing engagement portion 74b engages with the operated portion 63 of the closer lever 60 and rotates the closer lever 60 clockwise (closing side) about the axis of the rotation axis AX1 in FIG. 3. Further, the sector gear 74 rotates clockwise in FIG. 3 by the power in the reverse rotation direction transmitted from the closer drive device 70, so that the opening engagement portion 74c engages with the first operated portion 43 of the opening lever 40 and rotates the opening lever 40 counterclockwise (the other direction) about the axis of the rotation axis AX2 in FIG. 3.

[0026] As shown in FIG. 11, the hook member 65 is rotatably connected to the closer lever 60 via a rotation axis AX4 parallel to the rotation axis AX1 at its base end. At the tip of the hook member 65, an engagement claw 66 that extends toward the second claw portion 22 (engagement block portion 25) of the latch 20 and a columnar insertion portion 67 that protrudes in a direction parallel to the axial direction of the rotation axis AX4 are formed. The insertion portion 67 is inserted into the guide hole 41 of the opening lever 40. Note that the closer drive device 70, the sector gear 74, the closer lever 60, and the hook member 65 correspond to the closer of the present disclosure.

[0027] The hood lock device 10 of this embodiment further includes a switch Sw for detecting the states of the latch 20 and the pole 30 (such as the state where the latch 20 reaches the retraction start position, the fully locked state, etc.), and a control device 100. The control device 100 is configured as a microprocessor including a CPU, a ROM, a RAM, input / output ports, etc. A detection signal from the switch Sw and the like are input to the control device 100 via the input port. On the other hand, drive signals to the closer motor 71 and drive signals to the hood opening / closing motor 5m provided on the support member 5 are output from the control device 100 via the output port.

[0028] Next, the operation when closing the hood 4 in the open state and locking the hood 4 at the fully closed position while retracting the striker 6 with the latch 20 (the first claw portion 21) will be described with reference to FIGS. 12 to 18. FIG. 13 is a time chart showing the states of the switch and the motor when closing the hood 4 completely. FIGS. 14 to 19 are explanatory views showing the respective states of the hood lock device 10 from the open state to the completion of the retraction operation. In FIGS. 14 to 19, for ease of understanding, only the guide hole 41 of the open lever 40 is shown, and the sub-lever 50 is not shown.

[0029] As shown in FIG. 13, the control device 100 first controls the hood opening / closing motor 5m so that the hood 4 in the open state performs a closing operation. By the closing operation of the hood 4, the striker 6 enters the striker groove 11a of the base member 11 and presses the second claw portion 22 of the latch 20 to rotate it to the close side. When the switch Sw detects that the latch 20 has reached the retraction start position (time t1), the control device 100 stops the drive of the hood opening / closing motor 5m and starts the drive of the closer motor 71 to rotate the latch 20 to the close side so that the striker 6 is retracted. Then, when the switch Sw detects that the latch 20 has reached the full lock position via the half lock position (time t2), the control device 100 stops the drive of the closer motor 71 to complete the retraction operation. Thereby, the hood 4 is locked at the fully closed position. Hereinafter, the operation of retracting the striker 6 will be described in more detail.

[0030] In the initial state, as shown in FIG. 14, the hook member 65 is engaged with the open lever 40 via the insertion portion 67 inserted into the guide hole 41 of the open lever 40, and the engaging claw 66 of the hook member 65 is pressed against the hook contact surface 25b of the latch 20 (engaging block portion 25) by the biasing force acting on the open lever 40 (the biasing force from the sub-lever spring 54). When the striker 6 presses the second claw portion 22 of the latch 20 as the hood 4 closes by the power from the hood opening / closing motor 5m, the latch 20 rotates clockwise (toward the close side) in FIG. 14 around the axis of the rotation shaft AX1, and the engaging claw 66 of the hook member 65 slides on the hook contact surface 25b (an arc-shaped surface centered on the rotation shaft AX1) as the latch 20 rotates. Then, when the latch 20 reaches the retraction start position (engagement start position) on the open side from the half-lock position, as shown in FIG. 15, the engaging claw 66 of the hook member 65 engages with the hook engagement surface 25a of the latch 20 (engaging block portion 25). As shown in FIGS. 14 and 15, while the latch 20 rotates toward the close side from the open state to the retraction start position, the engaging portion 61 of the close lever 60 is separated from the pop-up engagement surface 25c of the latch 20 (engaging block portion 25), so the biasing force from the pop-up spring 64 does not act on the latch 20.

[0031] When the latch 20 reaches the drawing-in start position, the latch 20 rotates clockwise (close side) around the axis of the rotation shaft AX1 in FIG. 15 by the power from the closer motor 71 instead of the hood opening / closing motor 5m. That is, when the sector gear 74 rotates by the closer motor 71, the closing engagement portion 74b of the sector gear 74 engages with the operated portion 63 of the close lever 60 and presses the operated portion 63. As a result, the close lever 60 rotates clockwise (close side) around the axis of the rotation shaft AX1 in FIG. 15. Then, the hook member 65 connected to the close lever 60 moves along the guide hole 41 of the open lever 40 with an arc-shaped locus centered on the rotation shaft AX1 as the close lever 60 rotates in a state where the engagement claw 66 engages with the hook engagement surface 25a of the latch 20. Thereby, the latch 20 rotates clockwise (close side) around the axis of the rotation shaft AX1 integrally with the close lever 60 in FIG. 15 and draws in the striker 6 with the first claw portion 21.

[0032] Then, when the latch 20 rotates toward the close side while drawing in the striker 6 and reaches the half-latch position, as shown in FIGS. 16 and 17, the pole 30 rotates clockwise (one direction) around the axis of the rotation shaft AX2 in FIGS. 16 and 17 and engages with the half-engagement surface 22b of the latch 20 with the engagement portion 31. Further, when the latch 20 rotates toward the close side while drawing in the striker 6 and reaches the full-latch position, as shown in FIG. 18, the pole 30 rotates clockwise (one direction) around the axis of the rotation shaft AX2 in FIG. 18 and engages with the full-engagement surface 22c of the latch 20 with the engagement portion 31. Thereby, the pole 30 locks the latch 20 so that it cannot rotate in a state where the latch 20 meshes with the striker 6 at the notch portion 23 (full-lock state). As a result, the hood 4 is locked in the fully closed position. Since the latch 20 rotates toward the close side integrally with the close lever 60 from the drawing-in start position to the full-lock position, the closer motor 71 rotates the latch 20 toward the close side against the biasing force of the pop-up spring 64 that acts on the close lever 60 toward the open side.

[0033] When the latch 20 is rotated to the stroke end closer to the close side than the full lock position and the retraction operation of the striker 6 is completed, as shown in FIG. 19, the close lever 60 is slightly rotated counterclockwise (open side) around the axis of the rotation axis AX1 with respect to the latch 20 by the biasing force of the pop-up spring 64. Then, the close lever 60 engages with the pop-up engagement surface 25c of the latch 20 at the engagement portion 61. As a result, a biasing force from the pop-up spring 64 acts on the latch 20 toward the open side via the close lever 60.

[0034] Next, the operation of the hood lock device 10 when the full lock state and the half lock state are released in order will be described. FIG. 20 is an explanatory diagram showing the hood lock device 10 when the full lock state is released and the half lock state is reached, and FIG. 21 is an explanatory diagram showing the hood lock device 10 when the half lock state is released. In FIGS. 20 and 21, for ease of understanding, only the guide hole 41 of the open lever 40 is shown, and the illustration of the sub lever 50 is omitted.

[0035] As described above, since the locking portion 62 of the close lever 60 to which the popup spring 64 is locked is inserted into the arcuate guide hole 11b formed in the base member 11, the biasing force of the popup spring 64 acts on the close lever 60 (latch 20) until the locking portion 62 abuts against the end of the guide hole 11b. The guide hole 11b is extended so that the biasing force of the popup spring 64 reaches the latch 20 until the latch 20 is in a position (predetermined rotation angle) on the open side from the half-lock position. Therefore, even in the half-lock state after the full-lock state is released, as shown in FIG. 20, a biasing force from the popup spring 64 acts on the latch 20. Thereby, the half-latch state can be more surely released. When the half-lock state is released, as shown in FIG. 21, the latch 20 rotates counterclockwise (open side) around the axis of the rotation shaft AX1 in FIG. 21 by the biasing force from the popup spring 64. Then, the latch 20 pushes out the striker 6 with the second claw portion 22, and pops up the hood 4 fixed to the striker 6.

[0036] Here, when the pop-up spring is directly locked to the latch 20, as shown in FIG. 22, since the biasing force of the pop-up spring constantly acts on the stroke from the initial position to the full-lock position of the latch 20, even when the latch 20 moves from the initial position to the retraction start position, it is necessary to press the latch 20 (the second claw portion 22) against the biasing force of the pop-up spring. For this reason, when the hood 4 is closed so that the latch 20 is pressed by the striker 6 to the retraction start position by the power from the hood opening / closing motor 5m, the load on the hood opening / closing motor 5m becomes excessive. In contrast, in the hood locking device 10 of the present embodiment, the pop-up spring 64 is locked to the close lever 60, the close lever 60 is engaged with the latch 20, and the latch 20 is biased via the close lever 60. The range in which the biasing force of the pop-up spring 64 acts is defined so that the biasing force acts until the latch 20 reaches a position (predetermined rotation angle) closer to the close side than the retraction start position. Thereby, as shown in FIG. 23, it is possible to prevent the biasing force of the pop-up spring 64 from acting on the latch 20 between the initial position and the retraction start position. Therefore, the hood opening / closing device (hood opening / closing motor 5m) only needs to close the hood 4 so that the striker 6 presses the latch 20 against the biasing force of the latch spring 26, and thus the load on the hood opening / closing motor 5m can be reduced. As a result, the hood opening / closing motor 5m can be made smaller. Further, since the range in which the biasing force of the pop-up spring 64 acts is set to a position (predetermined rotation angle) on the open side rather than the half-lock position, for example, even if a load acts on the latch 20 from the hood 4 (striker 6) to the close side due to snow accumulation on the hood 4 or installation of a weather cover, the biasing force of the pop-up spring 64 can more reliably release the half-lock state and prevent re-locking after the half-lock state is released.

[0037] In the above-described embodiment, the hood locking device 10 is fixed to the vehicle body 2 and the striker 6 is fixed to the hood 4. However, the hood locking device 10 may be fixed to the hood 4 and the striker 6 may be fixed to the vehicle body 2.

[0038] In the above-described embodiment, the vehicle 1 is provided with a hood opening / closing device that automatically opens and closes the hood 4 by electricity, but it may not be provided with the hood opening / closing device. In this case, the closer drive device 70 and the sector gear 74 may be omitted.

[0039] In the above-described embodiment, the locking device for the opening / closing member for a vehicle of the present disclosure has been described by applying it to the hood locking device 10. However, in a vehicle having a storage space (rear trunk) at the rear part of the vehicle body 2, it may be applied to a locking device that locks a trunk lid rotatably provided on the rear trunk in the fully closed position. Further, in a vehicle provided with a flip-up back door at the rear opening of the vehicle body 2, it may be applied to a locking device that locks the back door in the fully closed position.

[0040] As described above, the embodiments for implementing the present disclosure have been described using the embodiments. However, the present disclosure is not limited to such embodiments, and it goes without saying that the present disclosure can be implemented in various forms without departing from the gist of the present disclosure.

Industrial Applicability

[0041] The present disclosure can be used in the manufacturing industry of hood locking devices and the like.

Explanation of Reference Numerals

[0042] 1 Vehicle, 2 Vehicle body, 4 Hood (opening / closing member), 5m Hood opening / closing motor (motor), 6 Striker, 10 Hood locking device, 11 Base member, 11a Guide hole, 20 Latch, 22b Half engagement surface (half-lock engagement portion), 22c Full engagement surface (full-lock engagement portion), 30 Pole, 40 Open lever, 50 Sub lever, 60 Close lever, 62 Locking portion (insertion portion), 64 Pop-up spring (biasing member), 65 Hook member (engagement member), 71 Closer motor (motor), AX1, AX2 Rotation axis.

Claims

1. An opening / closing member of a vehicle, a base member fixed to one of the vehicle bodies, A latch that is rotatable with respect to the base member and can engage with a striker fixed to the other of the opening / closing member and the vehicle body, A pole that is rotatable with respect to the base member and engages with the latch to restrict the rotation of the latch, A closer that starts engaging with the latch in a state where the latch is located at an engagement start position, and rotates the latch in a closing direction around the axis of the rotation axis so as to draw in the striker and engage with the latch in a state of engaging with the latch, It has, and is a locking device for an opening / closing member of a vehicle that locks the opening / closing member in a fully closed position by engaging the striker with the latch, An urging member that urges the latch to be pop-up around the axis of the rotation axis in an opening direction opposite to the closing direction so that the opening / closing member can be popped up when the engagement between the latch and the striker is released, The urging member is attached to a separate member different from the latch, and the separate member engages with the latch until the latch rotates in the opening direction from the full lock position and reaches a predetermined rotation angle, and urges the latch in the opening direction around the axis of the rotation axis through the separate member, The predetermined rotation angle is a rotation angle on the closing direction side from the engagement start position, A locking device for an opening / closing member of a vehicle.

2. A locking device for an opening / closing member of a vehicle according to claim 1, The latch is formed such that a half-lock engaging portion that engages with the pole at a half-lock position on the closing direction side from the engagement start position and a full-lock engaging portion that engages with the pole at the full-lock position on the closing direction side from the half-lock position are arranged in the circumferential direction, The predetermined rotation angle is a rotation angle on the closing direction side from the engagement start position and on the opening direction side from the half-lock position, A locking device for an opening / closing member of a vehicle.

3. The locking device for an opening / closing member for a vehicle according to claim 1 or 2, The closer includes an engaging member that can engage with the latch in a state where the latch is located at the engagement start position, a close lever rotatably connected to the engaging member, and a closer motor that drives the close lever. A guide hole is formed in the base member. The close lever has an insertion portion that is inserted into the guide hole and is movable along the guide hole. One end of the biasing member is locked to the insertion portion. The other end of the biasing member is locked to the base member. The separate member is the close lever. The close lever can receive power from the closer motor and rotate the latch in the closing direction around the axis of the rotation shaft in a state where the engaging member is engaged with the latch, and can be engaged with the latch and bias the latch in the opening direction around the axis of the rotation shaft by the biasing force from the biasing member until the insertion portion abuts against one end of the guide hole. The predetermined rotation angle is the rotation angle of the latch when the insertion portion abuts against the one end of the guide hole. A locking device for an opening / closing member for a vehicle.

4. The locking device for an opening / closing member for a vehicle according to claim 1 or 2, The opening / closing member is opened and closed by a motor. When closing the opening / closing member completely, the opening / closing member is closed by the motor until the latch is located at the engagement start position. After that, the closer rotates the latch in the closing direction around the axis of the rotation shaft. A locking device for an opening / closing member for a vehicle.

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