Lock device for vehicle opening / closing member

Abstract

To prevent a lock device from becoming an open state from a full lock state by one operation.SOLUTION: A lock device for a vehicle opening / closing member comprises: a latch; a pole; an open lever to rotate the pole; and a sub lever capable of rotating with respect to the open lever. A half lock engaging part and a full lock engaging part are formed on the latch so as to be aligned in order in a circumferential direction. The pole rotates in one direction along with engagement with the half lock engaging part and the full lock engaging part in order from an open state, while the engagements with the full lock engaging part and the half lock engaging part are released in order along with rotation in the other direction of the pole from a full lock state. A first pressed part with which the open lever can engage at a first rotation angle when engaging with the full lock engaging part, and a second pressed part with which the sub lever can engage at a second rotation angle when engaging with the half lock engaging part, are formed on the pole.SELECTED DRAWING: Figure 9

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 latch from returning to the open position (fully locked state). By operating from inside the vehicle to rotate the secondary lever slightly in a direction away from the latch against the biasing force, the latch retainer portion disengages from the locking recess, and the latch rotates in the opening 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, by operating from inside the vehicle to rotate the secondary lever greatly against the biasing force, the striker disengages from the hook portion, and the hood can be opened (open state). By using the secondary lever also as a pole, the number of parts can be reduced.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above-described locking device for a vehicle opening / closing member, in the fully locked state, by slightly rotating the secondary lever by an operation from inside the vehicle, a half-locked state is set, and in the half-locked state, by largely rotating the secondary lever by an operation from inside the vehicle, an open state is set. Therefore, depending on the amount of operation from inside the vehicle, there is a case where the fully locked state directly shifts to the open state with a single operation, and there is a risk that the opening / closing member may be unexpectedly opened.

[0005] The locking device for a vehicle opening / closing member of the present disclosure is a locking device for a vehicle opening / closing member that can shift to an open state, a half-locked state, and a fully locked state, and mainly aims not to allow the fully locked state to shift to the open state with a single operation.

Means for Solving the Problem

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

[0007] The locking 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 engages with the latch to restrict the rotation of the latch, and is a locking device for a vehicle opening / closing member that locks the opening / closing member at the fully closed position by engaging the striker with the latch, an open lever that is rotatable with respect to the base member, a sub-lever that is rotatable with respect to the open lever, and is provided with The latch is formed such that a half-lock engaging portion that engages with the pole in the half-locked state and a full-lock engaging portion that engages with the pole in the fully locked state are arranged side by side in the circumferential direction. 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 one direction around the axis of the rotation shaft, and as it rotates in the other direction opposite to the one direction around the axis of the rotation shaft from the full-lock state, 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 the engagement with the full-lock engaging portion is released and the pole engages with the half-lock engaging portion. When the open lever rotates in a state where the pole is positioned 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 positioned 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. This is the gist.

[0008] In the locking device for the vehicle opening / closing member of the present disclosure, as the pole engages with the half-lock engaging portion and the full-lock engaging portion in order from the open state, it rotates in one direction around the axis of the rotation shaft, and as it rotates in the other direction around the axis of the rotation shaft from the full-lock state, the engagement between the full-lock engaging portion and the half-lock engaging portion is released in order. Then, when the open lever rotates in the state where the pole is positioned at the first rotation angle (the state of engaging with the full-lock engaging portion), it engages with the first pressed portion of the pole, and the open lever rotates the pole in the other direction. Further, after the rotation of the open lever is returned, when the open lever rotates in the state where the pole is positioned at the second rotation angle (the state of engaging with the half-lock engaging portion), a sub-lever rotatable with respect to the open lever engages with the second pressed portion of the pole, and the open lever rotates the pole in the other direction together with the sub-lever. Thereby, the rotation range of the pole with respect to the rotation of the open lever can be set according to the presence or absence of the engagement of the sub-lever with the second pressed portion of the pole, and it is possible to prevent the pole from being opened to the open state with a single operation from the full-lock state.

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 lock device 10 as a lock device for an opening / closing member of the vehicle of 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. Further, FIG. 6 is a schematic configuration diagram of the latch 20. FIG. 7 is a schematic configuration diagram of the pole 30. FIG. 8 is an explanatory view 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.

[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 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 at 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 that is rotatable with respect to the base member 11 and can engage with the striker 6 fixed to the hood 4, a pole 30 that is rotatable with respect to the base member 11 and engages with the latch 20 to restrict the rotation of the latch 20, a close lever 60 that engages with the latch 20 and is integrally rotatable, a hook member 65 that is rotatably connected to the close lever 60, a closer drive device 70, an open lever 40 that engages with the pole 30 and is integrally rotatable, and a sub lever 50 that is 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 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 clockwise 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] 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 near 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 contact, a sub-lever contact surface 25c with which the sub-lever 50 can 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 clockwise (close side) around 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 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 sub-lever contact surface 25c is formed by a planar surface that extends in the radial direction of the rotation axis AX1 on the open engagement surface 22a side of the second claw portion 22. The pop-up engagement surface 25d is formed by a planar surface that extends in the radial direction 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-shaped member and is rotatable around 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, 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 clockwise (one direction) around the axis of the rotation axis AX2 in FIG. 7.

[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 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] Furthermore, 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 capable of supporting 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 capable of supporting 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 portion 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 portion 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 superposed on 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 fully-releasing pressed portion 32 (first pressed portion) of the pole 30, and first and second operating portions 43, 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 operating 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 with the sector gear 74 engaged with the first operating portion 43. The second operating portion 44 is formed at a position different from the first operating 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 operating 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.As a result, the fully locked 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 fully locked 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). It is adjusted to be an amount obtained by adding a slight margin to the amount necessary for the pole 30 to rotate counterclockwise (the other direction) in FIG. 9. In this embodiment, the release of the half-locked state can also be performed by stroking (rotating) the open lever 40 by approximately the same amount from the initial position after the fully locked state is released. Details thereof will be described later. Further, the open lever 40 is positioned at the initial position with respect to the latch 20 under the biasing force from a sub-lever spring 54 described later. The initial position strictly varies depending on the rotation position of the latch 20.

[0021] Also, as shown in FIG. 9, the open lever 40 is also formed with a protrusion 45 that protrudes radially from the rotation axis AX2 at a position different from the engaging portion 42. As shown in FIG. 3, the protrusion 45 protrudes so as to communicate with a notch 11d formed in the base member 11. Then, the protrusion 45 abuts against the edge of the notch 11d on the circumferential side, thereby restricting the open lever 40 from rotating clockwise in FIG. 3 around the axis of the rotation axis AX2 at a restricted position beyond the initial position.

[0022] Furthermore, 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 (the rotation axis of the close lever 60) as the center in a state where the open lever 40 is positioned at the initial position.

[0023] 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 (first rotation angle), and is in a state where it 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 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 rotation at half engagement, 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. 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. Thereby, the full-lock state and the half-lock state can be individually released by a simple mechanism.

[0024] 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 popup 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 popup engaging surface 25d formed on the engaging block portion 25 of the latch 20. As shown in FIG. 4, the other end of the popup 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 popup 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 popup 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 popup 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 centered on the rotation axis AX1 in the base member 11. The guide hole 11b defines the range within which the biasing force of the popup spring 64 acts on the close lever 60 (the 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.

[0025] The operated part 63 is formed in a columnar shape so as to project 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 in the clockwise direction (close side) around the axis of the rotation axis AX1 in FIG. 11.

[0026] 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. When the sector gear 74 rotates counterclockwise in FIG. 3 by the power transmitted from the closer drive device 70, the closing engagement part 74b engages with the operated part 63 of the close lever 60, causing the close lever 60 to rotate in the clockwise direction (close side) around the axis of the rotation axis AX1 in FIG. 3. Also, when the sector gear 74 rotates clockwise in FIG. 3 by the power in the reverse rotation direction transmitted from the closer drive device 70, the opening engagement part 74c engages with the first operated part 43 of the open lever 40, causing the open lever 40 to rotate in the counterclockwise direction (other direction) around the axis of the rotation axis AX2 in FIG. 3.

[0027] As shown in FIG. 11, the hook member 65 is pivotally connected to the close lever 60 via a pivot axis AX4 parallel to the pivot axis AX1 so as to be rotatable relative thereto. 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 columnar insertion portion 67 protruding in a direction parallel to the axial direction of the pivot 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 biased clockwise in FIG. 12 around the axis of the pivot axis AX2 via the sub-lever 50 by the sub-lever spring 54, and the hook member 65 is biased toward the engaging block portion 25 (hook engaging surface 25a and hook abutting surface 25b) of the latch 20 by the biasing force acting on the open lever 40. The open lever 40 is positioned at the initial position with respect to the latch 20 when the engaging claw 66 of the hook member 65 is pressed against the hook engaging surface 25a or the hook abutting surface 25b of the engaging block portion 25.

[0028] The engaging claw 66 of the hook member 65 is pressed against the hook contact surface 25b formed on the engaging block portion 25 of the latch 20 by the biasing force acting on the above-described open lever 40 in the open state where the latch 20 releases the striker 6. Then, as the latch 20 rotates from the open state toward the close side, the engaging claw 66 of the hook member 65 is in sliding contact with the hook contact surface 25b, and engages with the hook engaging surface 25a in a state where the latch 20 is positioned at a rotation angle (drawing-in start position) on the open side from the half-lock position, as shown in FIG. 12. When the closing engagement 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 closing lever 60 rotates clockwise (closing side) in FIG. 12 around the axis of the rotation shaft AX1, and the hook member 65 (engaging claw 66) connected to the closing lever 60 moves along the guide hole 41 of the open lever 40 in an arc-shaped locus centered on the rotation shaft AX1. As a result, the latch 20 rotates clockwise (closing side) in FIG. 12 around the axis of the rotation shaft AX1 integrally with the closing lever 60, and the striker 6 is drawn in by the first claw portion 21. The pole 30 sequentially engages with the half-engagement surface 22b and the full-engagement surface 22c at the engagement portion 31 as the latch 20 rotates. Then, as shown in FIG. 13, the pole 30 locks the latch 20 so as not to rotate in a state where the latch 20 engages with the striker 6 at the notch portion 23 (full-lock position) by engaging with the full-engagement surface 22c at the engagement portion 31.

[0029] When the closer drive device 70 stops due to some abnormality while rotating the latch 20 toward the close side, the latch 20 is locked together with the close lever 60 (hook member 65). Therefore, the open lever 40 is operated by the unlocking lever to disengage the hook member 65 from the hook engagement surface 25a of the latch 20 to release the lock of the latch 20. In this case, since the latch 20 rotates toward the open side by the biasing force of the latch spring 26 to be in the open state, the hook member 65 is separated from the hook engagement surface 25a and the hook contact surface 25b of the latch 20. As a result, the open lever 40 is not positioned at the initial position. When the open lever 40 rotates beyond the initial position by the biasing force of the sub-lever spring 54, the hook member 65 connected to the open lever 40 via the insertion portion 67 enters the rotation axis AX1 side of the latch 20 (see FIG. 3). When this state is reached, even if the latch 20 is rotated from the open state toward the close side, the latch 20 interferes with the hook member 65 and cannot rotate toward the close side. In the present embodiment, the open lever 40 abuts against the notch 11d of the base member 11 at the above-described limit position, and rotation beyond the limit position is restricted, so such inconvenience does not occur.

[0030] 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 controller 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 to the close 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 to the close side. The latch 20 rotates to the close 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.

[0031] Next, the operation when the full lock state or the half lock state is released by the operation of the unlock lever by the operator will be described. In the hood lock device 10 of the present embodiment, when the unlock lever is operated once in the full lock state, it becomes the half lock state, and when the unlock lever is operated once again in the half lock state, it becomes the open state. That is, in the hood lock device 10 of the present embodiment, two operations of the unlock 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.

[0032] 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).

[0033] 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 (open side) in FIG. 16 around the axis of the rotation shaft AX1, when the full lock state is released, it rotates to the open side. When the latch 20 rotates to 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.

[0034] 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 half-engagement rotation angle (the second rotation angle) compared to the full-engagement rotation angle (the first rotation angle), when the open lever 40 returns to the initial position in the half-locked state, the open lever 40 is in a position where it has rotated clockwise (in one direction) relative to the pole 30 around the axis of the rotation axis AX2 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 is in a state where it can come into 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.

[0035] Next, the operation for releasing the half-locked state will be described with reference to FIGS. 19 to 22.

[0036] 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 shaft AX2 in FIG. 19. Since the pole 30 is positioned counterclockwise (in the other direction) around the axis of the rotation shaft 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 direction (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 direction (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 shaft 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 shaft 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.

[0037] Here, after the hood 4 is opened and then fully closed again, as shown in FIG. 23, the latch 20 rotates clockwise (close side) around the axis of the rotation shaft AX1 in FIG. 23 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 sub - lever contact surface 25c of the engaging block portion 25 formed on the latch 20. Then, as shown in FIG. 24, the free end portion 51 of the sub - lever 50 is pressed and pushed down by the engaging block portion 25 (sub - lever contact surface 25c) 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. 25, the pole 30 rotates clockwise (one direction) around the axis of the rotation shaft AX2 in FIG. 25 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) around the axis of the rotation shaft AX2 relative to the pole 30, 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).

[0038] 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.

[0039] In the above - described embodiment, the vehicle 1 is provided with a hood opening and closing device that automatically opens and closes the hood 4 electrically, but it may not be provided with a hood opening and closing device. In this case, the closer drive device 70 and the sector gear 74 may be omitted.

[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 lock devices and the like.

Description of Reference Numerals

[0042] 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), 30 Pole, 32 Full release pressed portion (first pressed portion), 33 Half release pressed portion (second pressed portion), 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 engages with the latch 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, A sub-lever that is rotatable with respect to the open lever, and comprising, The latch is formed such that a half-lock engaging portion that engages with the pole in a half-lock state and a full-lock engaging portion that engages with the pole in a full-lock state are arranged side by side in the circumferential direction, 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, the pole rotates in one direction around the axis of the rotation axis, and as the pole rotates in the other direction opposite to the one direction around the axis of the rotation axis from the full-lock state, 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 that can be engaged by the open lever at a first rotation angle that is the rotation angle of the pole when engaging with the full-lock engaging portion, and a second pressed portion that can be engaged by the sub-lever at a second rotation angle that is the rotation angle of the pole when the engagement with the full-lock engaging portion is released and engages with the half-lock engaging portion, When the pole is located at the first rotation angle and engaged with the full-lock engaging portion, the open lever rotates, causing the open lever to engage with the first pressed portion and rotate the pole from the first rotation angle to the second rotation angle in the other direction to release the engagement between the pole and the full-lock engaging portion. After the rotation of the open lever is returned, when the pole is located at the second rotation angle and engaged with the half-lock engaging portion and the open lever rotates, the sub-lever engages with the second pressed portion and rotates the pole from the second rotation angle in the other direction to release the engagement between the pole and the half-lock engaging portion. Locking device for a vehicle opening / closing member.

2. The locking device for a vehicle opening / closing member according to claim 1, wherein the open lever is rotatable coaxially with the pole with respect to the base member, when the pole is located at the first rotation angle and the open lever rotates around the axis of the rotation axis in the other direction, the open lever engages with the first pressed portion and rotates from the first rotation angle to the second rotation angle in the other direction integrally with the open lever, the sub-lever is rotatably connected to the open lever at a position different from the rotation axis of the open lever, and when the pole is located at the second rotation angle and the open lever returns to the initial position on the one-direction side around the axis of the rotation axis, the sub-lever rotates with respect to the open lever to be engageable with the second pressed portion. Locking device for a vehicle opening / closing member.

3. The locking device for a vehicle opening / closing member according to claim 1 or 2, wherein when the pole is located at the first rotation angle and the open lever rotates a predetermined amount from the initial position, the pole is rotated from the first rotation angle to the second rotation angle in the other direction, and when the pole is located at the second rotation angle and the open lever rotates the predetermined amount from the initial position, the pole is rotated from the second rotation angle in the other direction. Locking device for a vehicle opening / closing member.

4. The locking device for a vehicle opening / closing member according to claim 1 or 2, wherein the pole, the open lever, and the sub-lever are plate-like members that overlap each other in the extending direction of the rotation axis, and at least one of the engaging portion of the open lever engageable with the first pressed portion and the engaging portion of the sub-lever engageable with the second pressed portion is a bent portion bent toward the pole side at the outer edge portion. Locking device for a vehicle opening / closing member.

Images