Lock device for vehicle opening / closing member

Abstract

To prevent an opening / closing member from being hardly opened due to re-locking after releasing a half lock state, and subsequently to enable the opening / closing member to be locked in a closed state when closing the opening / closing member.SOLUTION: A lock device for a vehicle opening / closing member comprises: a latch; a pole that is energized in one direction around a shaft center of a rotation shaft by an energizing member and restricts the rotation by engaging with the latch; an open lever to rotate the pole in the other direction around the shaft center of the rotation shaft; and a sub lever that is rotatably connected to the open lever and can engage with the pole. A half lock engaging part to engage with the pole at a half lock position and a full lock engaging part to engage with the pole at a full lock position are formed on the latch. When engagement between the pole and the half lock engaging part is released, the sub lever in a state of engaging with the pole abuts against the latch, and restricts the rotation caused by the energizing member in one direction of the pole until the latch has a prescribed rotation angle on an open side with respect to the half lock 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 an opening / closing member of this type of vehicle, there has been proposed one including a latch that engages with a striker as it rotates to lock the hood in a fully closed state, a hook portion that engages with the striker as it rotates to lock the hood in a slightly opened state, and a secondary lever including a latch retainer portion that restricts the rotation of the latch engaged with the striker in the striker release direction (for example, see Patent Document 1). In this locking device, when the hood is closed, the striker engages with the striker engagement groove of the latch, and the latch retainer portion of the secondary lever engages with the locking recess of the latch to restrict the return of the latch to the release position (fully locked state). When the secondary lever is rotated slightly in a direction away from the latch against the biasing force by an operation from inside the vehicle, the latch retainer portion disengages from the locking recess, and the latch rotates in the release direction. As the latch rotates, the striker is pushed by the latch and engages with the hook portion of the secondary lever, and the hood is held in a slightly opened state (half locked state). Then, when the secondary lever is rotated largely against the biasing force by an operation from inside the vehicle, the striker disengages from the hook portion, and the hood can be opened (open state).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, if a load acts on the opening / closing member in the closing direction due to snow accumulation or the like on the opening / closing member, even if the half-lock state is released, re-locking may occur immediately. In this case, the unlocking operation may be repeated many times, making it difficult to open the opening / closing member.

[0005] The lock device for a vehicle opening / closing member of the present disclosure is a lock device for a vehicle opening / closing member that can shift to an open state, a half-lock state, and a full-lock state. After releasing the half-lock state, it is mainly intended to prevent re-locking and making it difficult to open the opening / closing member, and after opening the opening / closing member, when closing the opening / closing member next, to enable the opening / closing member to be locked in the closed state.

Means for Solving the Problems

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

[0007] The lock device for a vehicle opening / closing member of the present disclosure includes a base member fixed to one of a vehicle opening / closing member and a vehicle body, 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 is biased in one direction around the axis of the rotation shaft by a biasing member, and can engage with the latch by rotating in the one direction around the axis of the rotation shaft to restrict the rotation of the latch, and is a lock device for a vehicle opening / closing member that locks the opening / closing member in the fully closed position by engaging the striker with the latch, an open lever that is rotatable with respect to the base member and can rotate the pole in the other direction opposite to the one direction around the axis of the rotation shaft so as to release the engagement between the pole and the latch, a sub-lever that is rotatably connected to the open lever and can engage with the pole, and is provided with The latch is formed such that a half-lock engaging portion that engages with the pole at the half-lock position and a full-lock engaging portion that engages with the pole at the full-lock position are arranged side by side in the circumferential direction. When the engagement between the pole and the half-lock engaging portion is released, the sub-lever abuts against the latch in a state of engaging with the pole until the latch reaches a predetermined rotation angle on the opening side with respect to the half-lock position, thereby restricting the rotation of the pole in the one direction by the biasing member. This is the gist.

[0008] In the locking device for a vehicle opening / closing member of the present disclosure, when the pole rotates in the other direction opposite to the one direction in which the pole is biased by the biasing member and the engagement with the half-lock engaging portion is released, until the rotation angle of the latch becomes a predetermined rotation angle on the opening side with respect to the half-lock state, the sub-lever abuts against the latch to restrict the rotation of the pole in the one direction by the biasing member. Thereby, it is possible to prevent the pole from rotating in the one direction and re-engaging with the half-lock engaging portion of the latch. Further, when the latch rotates beyond the predetermined rotation angle to the opening side, the restriction of the rotation of the pole is released, so that the pole can rotate in the one direction by the biasing member and engage with the latch. As a result, after releasing the half-lock state for opening the opening / closing member, it is possible to prevent re-locking and making it difficult to open the opening / closing member, and after opening the opening / closing member, it is possible to lock it in the closed state when closing the opening / closing member next.

Brief Description of the Drawings

[0009]

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Mode for Carrying Out the Invention

[0010] Modes 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 lock device 10 as a locking device for an opening / closing member of the vehicle according to the present disclosure. FIGS. 2 and 3 are external perspective views of the front side of the hood lock device 10. FIG. 4 is an external perspective view of the back side of the hood lock device 10. FIG. 5 is an exploded perspective view of the hood lock device 10. FIG. 6 is a schematic configuration diagram of a latch 20. FIG. 7 is a schematic configuration diagram of a pole 30. FIG. 8 is an explanatory diagram showing an open state, a half-lock state, and a full-lock state of the latch 20. FIG. 9 is a schematic configuration diagram of the pole 30, an open lever 40, and a sub-lever 50. FIG. 10 is a schematic configuration diagram of the sub-lever 50. FIG. 11 is a schematic configuration diagram of a close lever 60 and a hook member 65.

[0012] As shown in FIG. 1, the vehicle 1 includes a front trunk T as a storage space installed at the front of the vehicle body 2, a hood 4 that is supported by the vehicle body 2 via a hinge 3 so as to be rotatable up and down 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 the hood lock device 10 of the present embodiment that locks the hood 4 in the fully closed position. The hood lock 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 lock device 10 includes a base member 11 fixed to the vehicle body 2 and having a striker groove 11a for receiving a striker 6, a cover member 12 fixed to the base member 11 so as to cover the inside of the hood lock 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, and a sub lever 50 rotatably connected to the open lever 40.

[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 in which the striker 6 is released), a half engagement surface 22b that engages with the pole 30 in the half-lock state (the state in which 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 in which 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 portion on the rotation axis AX1 side of the half engagement surface 22b, and the distance rb is longer than the distance rc from the center O of the rotation axis AX1 to the end portion on the rotation axis AX1 side of the full engagement surface 22c.

[0016] Further, 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, first and second sub-lever contact surfaces 25b and 25c with which the sub-lever 50 can come into contact, and a pop-up engagement surface 25d with which the close lever 60 can engage. 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 (drawing-in start position) from the half-lock position. The latch 20 can rotate in the clockwise direction (close side) around the axis of the rotation axis AX1 integrally with the close lever 60 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 first sub-lever contact surface 25b 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 second sub-lever contact surface 25c is formed by a convex curved surface that extends in an arc shape centered on the rotation axis AX1 from the end portion in the radial direction of the first sub-lever contact surface 25b. The pop-up engagement surface 25d 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.

[0017] The pole 30 is a plate-like member and is rotatable around the axis of a rotation axis AX2 fixed to the base member 11 in parallel with 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, and the other 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) around the axis of the rotation axis AX2 in FIG. 7.

[0018] In addition, 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 this order, the pole 30 rotates in the clockwise direction (one direction) in FIG. 8 around the axis of the rotation axis AX2. Further, as the pole 30 rotates in the counterclockwise direction (the other direction) in FIG. 8 around 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 (the first 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 second 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] Further, the pole 30 includes a full-release pressed portion 32 (first pressed portion) with which the open lever 40 can engage in the circumferential direction around the rotation axis AX2, a half-release pressed portion 33 (second pressed portion) 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-release 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-release pressed portion 33. The full-release 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-release 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 full-release 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 on the rotation axis AX2 side in the radial direction of the half-release 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 on the outer peripheral side in the radial direction of the half-release pressed portion 33.

[0020] The open lever 40 is a plate-like member that is superimposed on the pole 30 in the axial direction of the rotation axis AX2, and as shown in FIG. 9, it can rotate 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 fully-releasing pressed portion 32 (first pressed portion) 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 fully-releasing pressed portion 32 on the clockwise (one direction) side in FIG. 9 with the pole 30 positioned at the full-engagement rotation angle (first rotation angle), and cannot engage with the fully-releasing pressed portion 32 with the pole 30 positioned at the half-engagement rotation angle (second rotation angle), 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 driving 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 full-engagement rotation angle, 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 fully-releasing pressed portion 32 of the pole 30. Then, the pole 30 rotates counterclockwise (the other direction) integrally with the open lever 40 as the fully-releasing pressed portion 32 is pressed by the open lever 40, and the engaging portion 31 disengages from the full-engagement surface 22c of the latch 20.Accordingly, the full-lock state can be released by the operation of the closer drive device 70 or the operation of the unlocking 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 the 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), and is adjusted to be an amount obtained by adding a slight margin to the amount necessary for the pole 30 to rotate counterclockwise (in the other direction) in FIG. 9. In the present embodiment, the half-lock state can also be released by stroking (rotating) the open lever 40 by approximately the same amount from the initial position after the full-lock state is released. Details thereof will be described later.

[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 with the rotation axis AX1 (rotation axis of the close lever 60) as the center 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. The outer peripheral surface of the free end portion 51 is formed by a concave curved surface that is slightly recessed in an arc shape. The sub lever 50 has, as shown in FIG. 10, 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 the 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 (first rotation angle), and cannot engage with the half release pressed portion 33 (second pressed portion). 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 (second rotation angle), and 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 is substantially the same as the rotation amount of the pole 30 from the half engagement rotation angle to the open engagement rotation angle. 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 that biases 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 25d 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 25d and is biased toward 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. As a result, 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). In the present embodiment, the guide hole 11b is formed so as to bias the latch 20 toward the open side from the stroke end closer to the close side than the full lock position to the position closer to the open side than the half lock position.

[0024] The operated part 63 is formed in a columnar shape so as to protrude in a direction parallel to the rotation axis AX2 from a position spaced apart from the rotation axis AX2 of the close lever 60 so that the sector gear 74 can be engaged therewith. As the sector gear 74 rotates, the operated part 63 is pressed, causing the close lever 60 to rotate clockwise (close side) around the axis of the rotation axis AX1 in FIG. 11.

[0025] As shown in FIG. 3, the closer drive device 70 includes a closer motor 71, an output gear 73 that meshes with the 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 around the axis of a rotation axis AX5 parallel to the rotation axes AX1 and AX2, and has a fan-shaped gear part 74a that meshes with the output gear 73, a closing engagement part 74b that extends radially from the rotation axis AX5 at a position different from the gear part 74a, and an opening engagement part 74c that extends radially from the rotation axis AX5 at a position different from the gear part 74a and the closing engagement part 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 part 74b engages with the operated part 63 of the close lever 60 and rotates the close lever 60 clockwise (close side) around 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 part 74c engages with the first operated part 43 of the open lever 40 and rotates the open lever 40 counterclockwise (other direction) around 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 close 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 engaging claw 66 extending toward the second claw portion 22 (engaging block portion 25) of the latch 20 and a cylindrical insertion portion 67 protruding 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 open lever 40. As described above, the open lever 40 is urged clockwise in FIG. 12 around the axis of the rotation axis AX2 via the sub-lever 50 by the sub-lever spring 54, and the hook member 65 is urged toward the second claw portion 22 (engaging block portion 25) of the latch 20 by the urging force acting on the open lever 40.

[0027] As shown in FIG. 12, the engaging claw 66 of the hook member 65 engages with a hook engaging surface 25a formed on the engaging block portion 25 of the latch 20 in a state where the latch 20 is positioned at a rotation angle (retraction start position) on the open side from the half-latch position. When the closing engaging portion 74b of the sector gear 74 engages with the operated portion 63 by the operation of the closer drive device 70 and the operated portion 63 is pressed, the close lever 60 rotates clockwise (closing side) in FIG. 12 around the axis of the rotation axis AX1, and the hook member 65 (engaging claw 66) connected to the close lever 60 moves along the guide hole 41 of the open lever 40 along an arc-shaped locus centered on the rotation axis AX1. As a result, the latch 20 rotates clockwise (closing side) in FIG. 12 around the axis of the rotation axis AX1 integrally with the close lever 60, and retracts the striker 6 with the first claw portion 21. The pole 30 sequentially engages with the half-engaging surface 22b and the full-engaging surface 22c at the engaging portion 31 as the latch 20 rotates. Then, as shown in FIG. 13, the pole 30 locks the latch 20 in a non-rotatable state (full-lock position) where the latch 20 engages with the striker 6 at the notch portion 23 by engaging with the full-engaging surface 22c at the engaging portion 31.

[0028] In the vehicle 1 of the present embodiment, the hood 4 can be manually opened and closed by an operator, and can also be electrically opened and closed by a hood opening / closing device. When the hood 4 is electrically fully closed, when the control device of the vehicle 1 is instructed to fully close the hood 4 by an operation of a remote control or the like by the operator, the control device controls the hood opening / closing device so that the hood 4 rotates in the closing direction. As the hood 4 rotates in the closing direction, the striker 6 formed on the hood 4 enters the striker groove 11a of the base member 11 and abuts against and presses the second claw portion 22 of the latch 20 in the open state, rotating the latch 20 toward the closed side. The control device of the vehicle 1 controls the hood opening / closing device so that the hood 4 rotates in the closing direction until the latch 20 reaches the retraction start position. When the latch 20 reaches the retraction start position, the hook member 65 connected to the close lever 60 engages with the latch 20. Then, the control device of the vehicle 1 controls the closer motor 71 so that the close lever 60 rotates toward the closed side. The latch 20 rotates toward the closed side integrally with the close lever 60, retracts the striker 6, and engages with the pole 30 at the full lock position to be locked. Thereby, the hood 4 is locked at the fully closed position.

[0029] Next, the operation when the full lock state or the half lock state is released by the operation of the unlocking lever by the operator will be described. In the hood locking device 10 of the present embodiment, when the unlocking lever is operated once in the full lock state, it becomes the half lock state, and when the unlocking lever is operated once again in the half lock state, it becomes the open state. That is, in the hood locking device 10 of the present embodiment, two operations of the unlocking lever are required to change from the full lock state to the open state. By not directly shifting from the full lock state to the open state, it is possible to prevent the hood 4 from being unexpectedly opened.

[0030] First, the operation of the hood lock device 10 when releasing the full lock state will be described with reference to FIGS. 14 to 18. As shown in FIG. 14, in the full lock state, the engaging portion 53 of the sub lever 50 is located near the second sub lever support portion 34b of the pole 30 and is in a state where it cannot engage with the half release pressed portion 33 (second pressed portion).

[0031] When the lock release lever is operated once by the operator in the full lock state, the cable 80 is pulled, and the open lever 40 rotates counterclockwise (in the other direction) in FIG. 14 around the axis of the rotation shaft AX2. When the open lever 40 rotates, as shown in FIG. 15, the engaging portion 42 of the open lever 40 contacts (engages) the full release pressed portion 32 (first pressed portion) of the pole 30. Then, as the open lever 40 rotates, the pole 30 rotates integrally with the open lever 40 counterclockwise (in the other direction) in FIG. 15 around the axis of the rotation shaft AX2 from the full engagement rotation angle (first rotation angle). When the open lever 40 rotates to before its full stroke, the pole 30 reaches the half engagement rotation angle (second rotation angle), and as shown in FIG. 16, the engaging portion 31 of the pole 30 disengages from the full engagement surface 22c of the latch 20. Thereby, the full lock state is released. Since the latch 20 is biased counterclockwise (toward the open side) in FIG. 16 around the axis of the rotation shaft AX1, when the full lock state is released, it rotates toward the open side. When the latch 20 rotates toward the open side, as shown in FIG. 17, the engaging portion 31 of the pole 30 engages with the half engagement surface 22b of the latch 20, and the pole 30 locks the latch 20 at the half lock position. Thereby, the state shifts from the full lock state to the half lock state.

[0032] When the operator releases the operation of the unlocking lever and the pulling force on the cable 80 is released, the open lever 40 rotates clockwise (in one direction) around the axis of the rotation axis AX2 in FIG. 18 by the biasing force of the sub-lever spring 54 and returns to the initial position. Since the pole 30 is positioned counterclockwise (in the other direction) around the axis of the rotation axis AX2 in FIG. 18 at the rotation angle at half engagement (the second rotation angle) than at the rotation angle at full engagement (the first rotation angle), when the open lever 40 returns to the initial position in the half-lock state, the open lever 40 is in a position where it has rotated relatively clockwise (in one direction) around the axis of the rotation axis AX2 with respect to the pole 30 in FIG. 18. As a result, the engaging portion 53 of the sub-lever 50 connected to the open lever 40 disengages from the second sub-lever support portion 34b and is positioned near the first sub-lever support portion 34a, and becomes in a state where it can contact (engage) with the half-unlock pressing portion 33 (the second pressed portion). Thereby, with a simple configuration including the pole 30, the open lever 40, and the sub-lever 50, the sub-lever 50 can be switched between a state where it cannot engage with the half-unlock pressing portion 33 and a state where it can engage with the half-unlock pressing portion 33.

[0033] Next, the operation when releasing the half-lock state will be described with reference to FIGS. 19 to 22.

[0034] When the unlocking lever is operated once again by the operator in the half-lock state, the cable 80 is pulled, and the open lever 40 rotates counterclockwise (in the other direction) around the axis of the rotation axis AX2 in FIG. 19. Since the pole 30 is positioned counterclockwise (in the other direction) around the axis of the rotation axis AX2 at the rotation angle during half-engagement than at the rotation angle during full-engagement, even if the open lever 40 rotates in the counterclockwise (in the other direction), the engaging portion 42 of the open lever 40 does not contact the fully-releasing pressed portion 32 (the first pressed portion) of the pole 30. However, when the open lever 40 rotates in the counterclockwise (in the other direction), as shown in FIG. 20, the engaging portion 53 of the sub-lever 50 connected to the open lever 40 contacts (engages) the half-releasing pressed portion 33 (the second pressed portion) of the pole 30. Then, as the open lever 40 rotates, the half-releasing pressed portion 33 is pressed by the engaging portion 53 of the sub-lever 50, and the pole 30 rotates counterclockwise (in the other direction) around the axis of the rotation axis AX2 from the rotation angle during half-engagement integrally with the open lever 40. When the open lever 40 rotates to just before its full stroke, the pole 30 reaches the rotation angle during open engagement, and as shown in FIG. 21, the engaging portion 31 of the pole 30 disengages from the half-engagement surface 22b of the latch 20. Thereby, the half-lock state is released. Since the latch 20 is biased counterclockwise (toward the open side) around the axis of the rotation axis AX1 in FIG. 21 by the latch spring 26 and the pop-up spring 64, when the half-lock state is released, the latch 20 rotates toward the open side while pushing out the striker 6 with the second claw portion 22 mainly by the biasing force of the pop-up spring 64. Then, as shown in FIG. 22, when the engaging portion 31 of the pole 30 engages with the open engagement surface 22a of the latch 20, the latch 20 becomes an open state where it can rotate without being restricted by the pole 30. Thereby, the striker 6 is released from the latch 20, and the operator can open the hood 4.

[0035] Here, after the half-lock state is released, despite the biasing force of the pop-up spring 64, for example, due to snow accumulation on the hood 4 or the installation of a weather cover, etc., the latch 20 may be positioned near the half-latch position or closer to the close side than the half-latch position due to the load acting on the latch 20 from the hood 4 (striker 6). In this case, when the open lever 50 returns to the initial position, the pole 30 moves the engaging portion 31 toward the half-engaging surface 22b by the biasing force of the pole spring 36 and re-engages with the half-engaging surface 22b, and there may be a case where it becomes impossible to escape from the half-lock state.

[0036] In the hood lock device 10 of the present embodiment, when the half-lock state is released, as shown in FIG. 23, the engaging portion 53 of the sub-lever 50 is engaged with the half-release pressed portion 33 of the pole 30, and the free end portion 51 (concave curved surface) of the sub-lever 50 abuts against the second sub-lever contact surface 25c (convex curved surface) of the engaging block portion 25 formed on the latch 20. Thereby, the rotation of the open lever 40 connected to the base end portion of the sub-lever 50 and the rotation of the pole 30 are restricted so that the open lever 40 and the pole 30 engaging with the engaging portion 53 of the sub-lever 50 do not return to their initial positions, respectively, and re-engagement of the pole 30 (engaging portion 31) and the latch 20 can be prevented. As a result, even though the half-lock release operation has been performed, it is possible to avoid the striker 6 from being unable to come out of the latch 20, and the hood 4 can be opened more reliably. In the present embodiment, since the second sub-lever contact surface 25c is formed by a convex curved surface and the free end portion 51 is formed by a concave curved surface, the latch 20 can smoothly rotate around the axis of the rotation axis AX1 (open side and close side) while the free end portion 51 of the sub-lever 50 abuts against the second sub-lever contact surface 25c. At this time, the sub-lever 50 is held in a posture in which at least a part (the R portion surrounded by the dashed-dotted line in FIG. 10) of the contact range (concave curved surface) of the free end portion 51 capable of contacting the second sub-lever contact surface 25c of the latch 20 is located on the same side as the striker 6 engaging with the latch 20 with respect to the plane L passing through the rotation axis AX1 of the latch 20 and the rotation axis AX3 of the sub-lever 50 (see FIGS. 23 and 24). Here, a torque acts on the sub-lever 50 in the clockwise direction in FIGS. 23 and 24 around the axis of the rotation axis AX3 by the biasing force of the sub-lever spring 54. On the other hand, when the latch 20 rotates toward the close side while the free end portion 51 of the sub-lever 50 is in contact with the second sub-lever contact surface 25c of the latch 20, a force that tries to move the sub-lever 50 counterclockwise in FIGS. 23 and 24 around the axis of the rotation axis AX3 acts on the sub-lever 50 due to the frictional force between the latch 20 and the sub-lever 50.However, by setting the posture (position of the free end portion 51) of the sub lever 50 at the time of contact with the second sub lever contact surface 25c described above so that the torque acting on the sub lever 50 in the clockwise direction overcomes the force acting in the counterclockwise direction, it is possible to prevent the sub lever 50 from moving in the counterclockwise direction due to the frictional force. As a result, the free end portion 51 of the sub lever 50 does not drop off from the second sub lever contact surface 25c, and the latch 20 can be smoothly rotated to the open side in a state where the free end portion 51 contacts the latch 20 at the second sub lever contact surface 25c. Then, the hood 4 can be opened smoothly.

[0037] In the present embodiment, the second sub lever contact surface 25c (convex curved surface) extends in an arc shape so that the contact with the free end portion 51 of the sub lever 50 is maintained until the latch 20 reaches the open position (more open side than the half-lock position) where the striker 6 can come out of the latch 20 from the stroke limit (position where it overstrokes beyond the full-lock position). For this reason, after the operation of releasing the half-lock state is completed, as shown in FIG. 24, even if the striker 6 (hood 4) is pushed down until the latch 20 rotates to the full-lock position, the state where the free end portion 51 of the sub lever 50 is in contact with the second sub lever contact surface 25c of the latch 20 is maintained. Thereby, it is possible to more reliably prevent the pole 30 from reengaging with the half-engagement surface 22b or the full-engagement surface 22c of the latch 20. In the present embodiment, the second sub lever contact surface 25c is configured such that the contact with the free end portion 51 of the sub lever 50 is maintained from the stroke limit to the open position of the latch 20. However, the present invention is not limited to this, and the second sub lever contact surface 25c may be configured such that the contact is maintained from the full-lock position to the open position of the latch 20, or may be configured such that the contact is maintained from an intermediate position between the full-lock position and the half-lock position of the latch 20 to the open position.

[0038] When the latch 20 rotates to the open side from the position where the striker 6 can escape, as shown in FIG. 22, the contact between the second sub - lever contact surface 25c and the free end portion 51 of the sub - lever 50 is released. For this reason, the open lever 50 and the pole 30 rotate clockwise (in one direction) around the axis of the rotation axis AX2 in FIG. 22 by the biasing forces of the sub - lever spring 54 and the pole spring 36, respectively, and return to the initial position, and the pole 30 engages with the open engagement surface 22a of the latch 20. Therefore, when the hood 4 is fully closed next time, as the latch 20 rotates to the half - lock position and the full - lock position in order, the pole 30 engages with the half - engagement surface 22b and the full - engagement surface 22c from the open engagement surface 22a in order, and the hood 4 can be locked at the fully - closed position.

[0039] In this way, the sub - lever 50 is used to reliably release the full - lock state and the half - lock state step by step, and is also used to prevent re - locking immediately after the half - lock state is released. For this reason, in the hood locking device 10 of the present embodiment, while reducing the number of parts, these two functions can be realized.

[0040] Also, when the hood 4 is opened and then fully closed again, as shown in FIG. 25, the latch 20 rotates clockwise (close side in FIG. 25) around the axis of the rotation shaft AX1 from the open state. At this time, the engaging portion 53 of the sub-lever 50 is supported by the first sub-lever support portion 34a of the pole 30, and the free end portion 51 (tip portion) of the sub-lever 50 contacts the first sub-lever contact surface 25b of the engaging block portion 25 formed on the latch 20. Then, as shown in FIG. 26, the free end portion 51 of the sub-lever 50 is pressed and pushed down by the engaging block portion 25 (first sub-lever contact surface 25b) as the latch 20 rotates clockwise (close side) toward the full lock position. When the latch 20 rotates to the full lock position, as shown in FIG. 27, the pole 30 rotates clockwise (one direction in FIG. 27) around the axis of the rotation shaft AX2 and engages with the full engagement surface 22c of the latch 20 by the engaging portion 31. Then, as the pole 30 rotates, the sub-lever 50 rotates counterclockwise (the other direction in FIG. 27) relative to the pole 30 around the axis of the rotation shaft AX2, and the engaging portion 53 of the sub-lever 50 is positioned near the second sub-lever support portion 34b of the pole 30. As a result, the sub-lever 50 (engaging portion 53) returns to a state where it cannot engage with the half-release pressed portion 33 (second pressed portion).

[0041] In the above-described embodiment, the free end portion 51 of the sub lever 50 is formed in a concave curved surface shape with respect to the convex curved surface-shaped second sub lever contact surface 25c. However, as shown in the sub lever 150 according to another embodiment of FIG. 28, the outer peripheral surface (the contact portion with the second sub lever contact surface 25c) of the free end portion 151 may be formed in a convex curved surface shape extending in an arc shape centered on the rotation axis AX3. Thereby, as in the case of using the sub lever 50 of the present embodiment, as shown in FIGS. 29 and 30, regardless of the rotation of the latch 20, the sub lever 150 can contact the second sub lever contact surface 25c. At least a part (the R portion surrounded by the one-dot chain line in FIG. 28) of the contact range (convex curved surface) of the free end portion 51 is on the same side as the striker 6 that engages with the latch 20 with respect to the plane L passing through the rotation axis AX1 of the latch 20 and the rotation axis AX3 of the sub lever 50. It is held in a posture. Thereby, the latch 20 can be smoothly rotated to the open side in a state where the free end portion 51 contacts the latch 20 on the second sub lever contact surface 25c. Further, it is possible to more reliably prevent the free end portion 51 from falling off the second sub lever contact surface 25c.

[0042] In the above-described embodiment, the hood lock device 10 is fixed to the vehicle body 2 and the striker 6 is fixed to the hood 4. However, the hood lock device 10 may be fixed to the hood 4 and the striker 6 may be fixed to the vehicle body 2.

[0043] In the above-described embodiment, the vehicle 1 includes a hood opening / closing device that automatically opens and closes the hood 4 by electricity. However, the vehicle 1 may not include the hood opening / closing device. In this case, the closer drive device 70 and the sector gear 74 may be omitted.

[0044] In the above-described embodiment, the lock device for the vehicle opening / closing member of the present disclosure has been described by applying it to the hood lock device 10. However, in a vehicle having a storage space (rear trunk) at the rear of the vehicle body 2, the lock device for locking the trunk lid rotatably provided on the rear trunk in the fully closed position. It may be applied. 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 lock device for locking the back door in the fully closed position.

[0045] As described above, the embodiments for carrying out the present disclosure have been described using 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 thereof.

Industrial Applicability

[0046] The present disclosure can be used in the manufacturing industry of hood lock devices and the like.

Explanation of Signs

[0047] 1 Vehicle, 2 Vehicle body, 4 Hood (opening / closing member), 6 Striker, 10 Hood lock device, 11 Base member, 20 Latch, 22b Half engagement surface (half lock engagement portion), 22c Full engagement surface (full lock engagement portion), 25c Second sub lever contact surface (contact surface), 30 Pole, 32 Full release pressed portion (first pressed portion), 33 Half release pressed portion (second pressed portion), 36 Pole spring (biasing member) 40 Open lever, 50 Sub lever, AX1, AX2 Rotation axis.

Claims

1. A base member fixed to one of an opening / closing member of a vehicle and a vehicle body, 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 is biased in one direction around the axis of the rotation shaft by a biasing member, and engages with the latch by rotating in the one direction around the axis of the rotation shaft to restrict the rotation of the latch, A locking device for an opening / closing member of a vehicle, having the above components, and locking the opening / closing member in a fully closed position by engaging the striker with the latch, An open lever that is rotatable with respect to the base member and can rotate the pole in the other direction opposite to the one direction around the axis of the rotation shaft so as to release the engagement between the pole and the latch, A sub-lever that is rotatably connected to the open lever and can engage with the pole, Comprising: The latch is formed such that a half-lock engagement portion that engages with the pole at a half-lock position and a full-lock engagement portion that engages with the pole at a full-lock position are arranged side by side in the circumferential direction, When the engagement between the pole and the half-lock engagement portion is released, until the latch reaches a predetermined rotation angle on the open side from the half-lock position, the sub-lever abuts against the latch in a state of engaging with the pole to restrict the one-direction rotation of the pole by the biasing member. A locking device for an opening / closing member of a vehicle.

2. The locking device for an opening / closing member of a vehicle according to claim 1, The sub-lever is rotatable with respect to the open lever around the axis of a rotation shaft parallel to the rotation shaft of the latch at a position different from the rotation shaft of the open lever, The contact surface of the latch against which the sub-lever abuts is an arcuate surface centered on the rotation shaft of the latch, When the sub - lever abuts against the abutting surface of the latch, at least a part of the contact range that can come into contact with the abutting surface of the latch is held in a posture located on the same side as the striker that engages with the latch with respect to a plane passing through the rotation axis of the latch and the rotation axis of the sub - lever. A locking device for a vehicle opening / closing member.

3. A locking device for a vehicle opening / closing member according to claim 1 or 2, The abutting surface of the latch is formed such that contact with the sub - lever is maintained at least in a rotation range from the full - lock position to the predetermined rotation angle. A locking device for a vehicle opening / closing member.

4. A locking device for a vehicle opening / closing member according to claim 1 or 2, As the pole engages with the half - lock engaging portion and the full - lock engaging portion in order from the open state of the latch, it rotates in the one direction, and as it rotates in the other direction from the full - lock position, the engagement between the full - lock engaging portion and the half - lock engaging portion is released in order. The pole is formed with a first pressed portion with which the open lever can engage at a first rotation angle which is the rotation angle of the pole when engaging with the full - lock engaging portion, and a second pressed portion with which the sub - lever can engage at a second rotation angle which is the rotation angle of the pole when engaging with the half - lock engaging portion. When the open lever rotates in a state where the pole is located at the first rotation angle and engaged with the full - lock engaging portion, the open lever engages with the first pressed portion and rotates the pole in the other direction from the first rotation angle to the second rotation angle to release the engagement between the pole and the full - lock engaging portion. After the rotation of the open lever is returned, when the open lever rotates in a state where the pole is located at the second rotation angle and engaged with the half - lock engaging portion, the sub - lever engages with the second pressed portion and rotates the pole in the other direction from the second rotation angle to release the engagement between the pole and the half - lock engaging portion. Locking device for an opening / closing member of a vehicle.

Images