JP2013217017A - Door lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability of an operation to open an opening/closing body provided to a vehicle, especially, a back door.SOLUTION: In a door lock device including a holding mechanism which holds a ratchet 5 at a disengagement position until a latch 2 moves toward an open position beyond a half-latch position when the ratchet 5 engaging with the latch 2 at a full-latch position is moved to the disengagement position by a disengaging mechanism, the disengagement mechanism includes a first operation lever 12 and a second operation lever 13 which are associated with individual door opening devices and operate when the associated door opening devices are operated to move the ratchet 5 from an engagement position to the disengagement position.

Description

  The present invention relates to a door lock device, and more particularly to a door lock device suitable for being attached to a back door of a vehicle.

  A door lock device for holding the door (opening / closing body) in a closed door state with respect to the vehicle body is attached to a back door (rear hatch) provided in a vehicle such as a four-wheeled vehicle.

  The door lock device includes a latch mechanism that restrains the striker when a latch engaged with a striker provided in the vehicle body meshes with the ratchet, and a mesh release mechanism that releases the mesh between the latch and the ratchet. The latch mechanism is housed in a latch case having a striker entry groove into which the striker enters. When the latch engaged with the striker reaches the full latch position or the half latch position, the ratchet engages with the latch, and the latch engages with the ratchet. When the release is released, the latch is configured to reach the open position. The mesh release mechanism is configured to move the ratchet engaged with the latch from the mesh position to the mesh release position. This engagement release mechanism includes, for example, a release lever provided in a lever arrangement portion (for example, a back plate) provided outside the latch case. One end of the release lever is inserted into the latch case through an opening provided in the latch case, and the ratchet is brought into contact with the ratchet in a direction in which the ratchet can move from the mesh position to the mesh release position. The release lever is connected to an open door device such as a key cylinder provided in the back door or an open handle provided in the vehicle, and when the open door device is operated, the ratchet is moved from the mesh position to the mesh release position. .

  In the latch mechanism, as described above, when the latch reaches the full latch position or the half latch position, the latch and the ratchet mesh with each other, and the striker is restrained. However, when the operator operates the open door device to release the engagement between the latch and the ratchet at the full latch position, the back door does not open if the latch and the ratchet are engaged at the half latch position. Therefore, the operator must operate the open door device again. As a door lock device to avoid such a situation, when the open door device is operated to release the latch and ratchet in the full latch position, the latch engages until the latch goes to the open position beyond the half latch position. However, there are those provided with a holding mechanism that holds the released state (see, for example, Patent Document 1 and Patent Document 2).

Japanese Patent No. 3980249 JP 2010-174567 A

  By the way, in the conventional door lock device attached to the back door, the mesh release mechanism only supports release by operation of one open door device. However, it is desirable that the operation of opening the back door can be performed from either the open door device provided in the vehicle or the open door device provided in the back door. Therefore, it cannot be said that the conventional door lock device attached to the back door has good operability for the open door operation.

  The present invention has been made in view of the above, and an object of the present invention is to provide a door lock device capable of improving the operability of an opening / closing body provided in a vehicle, particularly an operation of opening a back door.

  In order to achieve the above object, the door lock device according to claim 1 of the present invention is configured such that when a latch engaged with a striker reaches a full latch position or a half latch position, a ratchet engages with the latch, When the meshing with the ratchet is released, the latch reaches the open position, the meshing release mechanism that moves the ratchet meshed with the latch from the meshing position to the meshing release position, and meshes with the latch at the full latch position. A holding mechanism for holding the ratchet in the mesh release position until the latch moves to the open position beyond the half latch position when the ratchet is moved to the mesh release position by the mesh release mechanism; And the latch release mechanism includes a separate open door device. A door lock comprising a first operation lever and a second operation lever that are operated when the linked open door device is operated and move the ratchet from the mesh position to the mesh release position. apparatus.

  A door lock device according to a second aspect of the present invention is the door lock device according to the first aspect, wherein the first operation lever is rotatably disposed on a lever disposition portion provided outside the latch case. The second operating lever is rotatably supported by a support shaft provided on the inner side of the latch case, and one end of the second operating lever is disposed so as to protrude outside the latch case through an opening provided in the latch case. It is characterized by that.

  The door lock device according to a third aspect of the present invention is the door lock device according to the first aspect, wherein the latch case has a striker entry groove into which the striker enters, and the latch and the ratchet are the latches. It is rotatable with respect to the case, and the rotation center of the latch and the rotation center of the ratchet are arranged so as to be located on both sides with the striker entry groove as a boundary, and the mesh release mechanism is The ratchet rotation groove is disposed on a side where the rotation center of the ratchet is located with the striker entry groove as a boundary, and the holding mechanism is disposed on a side where the rotation center of the latch is disposed with the striker entry groove as a boundary. And

  A door lock device according to a fourth aspect of the present invention is the door lock device according to the first aspect, wherein the engagement release mechanism is rotatably disposed on a lever arrangement portion provided outside the latch case. The release lever includes a lever, one end of which enters the latch case through an opening provided in the latch case, and extends to a position where the ratchet can be moved from the meshing position to the meshing release position. The mesh release mechanism moves the ratchet from the mesh position to the mesh release position via the release lever for both the first operation lever and the second operation lever, and the holding mechanism releases the ratchet. The release lever moved to the position is held in that state.

  The door lock device according to a fifth aspect of the present invention is the door lock device according to the fourth aspect, wherein the ratchet is rotatably supported by a ratchet shaft provided in the latch case and meshes the ratchet from a mesh position. A ratchet contact portion of the release lever that contacts the ratchet when moving to the release position, and a second of the release lever that contacts the second operation lever when moving the ratchet from the engagement position to the engagement release position. The operation receiving portion is shifted in the axial direction of the ratchet shaft.

  A door lock device according to a sixth aspect of the present invention is the door lock device according to the first aspect, wherein the mesh release mechanism is rotatably disposed on a lever arrangement portion provided outside the latch case. The release lever includes a release lever, one end of which enters the latch case through an opening provided in the latch case, and extends to a position where the ratchet can be moved from the meshing position to the meshing release position. When the first operation lever is operated, the release lever moves the ratchet from the engagement position to the engagement release position, and when the second operation lever is operated, the second operation lever is directly moved. The ratchet is moved from the meshing position to the mesh release position, and the holding mechanism moves the release lever that has moved the ratchet to the mesh release position. Characterized in that it held in.

  A door lock device according to a seventh aspect of the present invention is the door lock device according to the sixth aspect, wherein the second operation lever is integrated with the ratchet.

  The door lock device according to an eighth aspect of the present invention is the door lock device according to the first aspect, wherein the holding mechanism is configured to release the ratchet when the latch moves from the half latch position to the open position side. It is characterized in that the holding at is released.

  A door lock device according to a ninth aspect of the present invention is the door lock device according to the first aspect, wherein the holding mechanism is configured to release the ratchet when the latch moves from the half latch position to the full latch position. It is characterized in that the holding at is released.

  A door lock device according to a tenth aspect of the present invention is the door lock device according to any one of the fourth to seventh aspects, wherein the holding mechanism moves the ratchet from the mesh position to the mesh release position by the release lever. A first holding lever that engages with the release lever when moved to a position to hold the ratchet in the mesh release position, and operates the first holding lever when the latch reaches a predetermined position. A second holding lever for releasing the engagement between the release lever and the first holding lever is provided.

  In the door lock device according to the present invention, the engagement release mechanism that releases the engagement between the latch and the ratchet includes a first operation lever and a second operation lever that are linked to separate open door devices. The first operation lever and the second operation lever operate when the associated open door device is operated, and move the ratchet to the mesh release position. That is, the door lock device according to the present invention can be linked to both of the two open door devices (for example, the open door device provided in the vehicle and the open door device provided in the door). Therefore, the door lock device according to the present invention can improve the operability of the operation of opening the door provided on the vehicle, particularly the back door.

FIG. 1 is a perspective view showing a schematic configuration of a door lock device according to Embodiment 1 of the present invention. FIG. 2 is a side view of the door lock device shown in FIG. FIG. 3 is a plan view showing a schematic configuration inside the latch case. FIG. 4 is a front view showing a schematic configuration inside the latch case. FIG. 5 is a plan view showing a state of the door lock device when the first operating lever is operated to release the engagement between the latch and the ratchet at the full latch position and the latch reaches the half latch position. FIG. 6 is a front view of the door lock device shown in FIG. FIG. 7 is a plan view showing a state of the door lock device when the latch reaches the open position beyond the half latch position shown in FIG. FIG. 8 is a front view of the door lock device shown in FIG. FIG. 9 is a plan view showing a state of the door lock device when the striker enters the striker entry groove again after reaching the open position and the latch reaches the half latch position. FIG. 10 is a plan view showing the state of the door lock device when the second operation lever is operated to release the engagement between the latch and the ratchet at the full latch position and the latch reaches the half latch position. FIG. 11 is a front view of the door lock device shown in FIG. FIG. 12 is a plan view showing a schematic configuration inside the latch case 1 in the door lock device according to the second embodiment of the present invention. FIG. 13 is a front view showing a schematic configuration inside the latch case. FIG. 14 is a plan view showing a state of the door lock device when the first operation lever is operated to release the engagement between the latch and the ratchet at the full latch position and the latch reaches the half latch position. FIG. 15 is a front view of the door lock device shown in FIG. FIG. 16 is a plan view showing a state of the door lock device when the latch reaches the open position beyond the half latch position shown in FIG. 14. 17 is a front view of the door lock device shown in FIG. FIG. 18 is a plan view showing a state of the door lock device immediately after the latch and the ratchet are disengaged in the full latch position by pressing the open door operation receiving portion of the ratchet. FIG. 19 is a plan view showing a state of the door lock device when the latch reaches the half latch position from the position shown in FIG. 20 is a front view of the door lock device shown in FIG. FIG. 21 is a plan view showing the state of the door lock device when the latch and the ratchet are disengaged at the half latch position shown in FIG. 19 by the pressing of the open door operation receiving portion of the ratchet and the latch reaches the open position. FIG. FIG. 22 is a front view of the door lock device shown in FIG.

  Hereinafter, embodiments of a door lock device according to the present invention will be described in detail with reference to the drawings. In all the drawings for explaining the embodiments, parts having the same function are given the same reference numerals, and repeated explanation thereof is omitted.

(Embodiment 1)
FIG. 1 is a perspective view showing a schematic configuration of a door lock device according to Embodiment 1 of the present invention. FIG. 2 is a side view of the door lock device shown in FIG. FIG. 3 is a plan view showing a schematic configuration inside the latch case. FIG. 4 is a front view showing a schematic configuration inside the latch case.

  The door lock device according to the present embodiment is attached to a door (opening / closing body) disposed in a vehicle main body so as to be opened and closed, and holds the door in a closed door state with respect to the vehicle main body. When the door is a back door disposed at the rear of the vehicle body and the back door can be opened and closed with respect to the vehicle body by the upper hinge, the door lock device is attached to the lower end of the back door.

  The door lock device of the present embodiment includes a latch case 1, a latch mechanism, a mesh release mechanism, and a holding mechanism, which are configured as shown in FIGS.

  The latch case 1 includes a body 101, a cover plate 102, and a back plate 103.

  The latch case 1 is provided with a space capable of accommodating the second holding lever 17 of the latch mechanism and the holding mechanism by covering the opening surface of the concave cover plate 102 with the body 101 and the back plate 103. The latch case 1 is provided with a striker entry groove 1S into which a striker S provided in the vehicle body enters. The striker entry groove 1 </ b> S has a striker advance entrance on the end surface of the latch case 1 on the vehicle front side, and terminates at the approximate center in the vehicle front-rear direction. The cover plate 102 is provided with an attachment portion 102b having a screw hole 102a for attaching the latch case 1 (door lock device) to the back door on the outer peripheral portion on the opening surface side. The back plate 103 includes a cover portion 103a that defines a space in which the second holding lever 17 can be accommodated with the body 101, and a lever disposition portion 103b that disposes the release lever 9 and the like. The boundary between the cover portion 103a and the lever arrangement portion 103b is located at the end of the latch case 1 on the vehicle rear side, and is substantially L-shaped in a side view shown in FIG. The lever arrangement portion 103b is on the vehicle upper side (opposite to the body 101) with the cover 103a as a boundary, and on the vehicle rear side (opposite to the striker entry groove 1S) with the boundary with the cover 103a as a boundary. It is bent to extend.

  The latch mechanism includes a latch 2, a latch shaft 3, a first coil spring 4, a ratchet 5, a ratchet shaft 6, and a second coil spring 7.

  The latch 2 has a striker engagement groove 2a, a hook portion 2b, a full latch engagement portion 2c, a half latch engagement portion 2d, and a second holding lever drive portion 2e, and is attached to the latch case 1. The latch shaft 3 is rotatably supported. The latch 2 is engaged with the first coil spring 4 so that the urging force by the elastic restoring force of the first coil spring 4 attached to the latch shaft 3 always acts counterclockwise in FIG.

  The striker engagement groove 2 a is a groove that engages with the striker S that has entered the striker entry groove 1 </ b> S, and is formed from the outer peripheral surface of the latch 2 toward the latch shaft 3. The hook portion 2b is located on the vehicle front side with respect to the striker engagement groove 2a in FIG. 3, and when the latch 2 is in the full latch position or the half latch position, the striker S is restrained and the latch 2 is in the open position. Sometimes the striker S can be removed. The full latch locking portion 2c is located on the vehicle rear side of the striker engagement groove 2a in FIG. 3, and when the latch 2 reaches the full latch position, it engages with the ratchet 5 and prevents the latch 2 from rotating due to the urging force. It is. The half latch locking portion 2d is a portion that meshes with the ratchet 5 when the latch 2 reaches the half latch position and prevents the latch 2 from rotating due to the urging force. The second holding lever driving unit 2e is a portion that presses the second holding lever 17 and rotates the second holding lever 17 clockwise in FIG. 3 when the latch 2 rotates from the half latch position to the open position side. is there.

  The ratchet 5 has a meshing part 5a and an action part 5b, and is rotatably supported by a ratchet shaft 6 attached to the latch case 1. The ratchet 5 is engaged with the second coil spring 7 so that the urging force by the elastic restoring force of the second coil spring 7 attached to the ratchet shaft 6 always acts clockwise in FIG. Further, the ratchet 5 is prevented from rotating clockwise in FIG. 3 at a predetermined rotational position (initial position) by a stopper 8 attached to the latch case 1 (cover plate 102).

  The meshing portion 5a is a portion that meshes with the full latch locking portion 2c and the half latch locking portion 2d of the latch 2. The action portion 5b is a portion with which the release lever 9 abuts in order to move the ratchet 5 from the meshing position to the mesh release position.

  The latch 2 and the ratchet 5 are arranged so that the rotation center of the latch 2 (latch shaft 3) and the rotation center of the ratchet (ratchet shaft 6) are positioned on both sides with the striker entry groove 1S as a boundary. .

  The mesh release mechanism includes a release lever 9, a release lever shaft 10, a third coil spring 11, a first operation lever 12, and a second operation lever 13.

  The release lever 9 has a ratchet contact portion 9a, a first operation receiving portion 9b, a second operation receiving portion 9c, and a first holding lever engaging portion 9d, and is attached to the lever arrangement portion 103b. The lever shaft 10 is rotatably supported. The release lever 9 is engaged with the third coil spring 11 so that the urging force by the elastic restoring force of the third coil spring 11 attached to the release lever shaft 10 always acts clockwise in FIG. The urging force of the third coil spring 11 is set smaller than the urging force of the second coil spring 7.

  The ratchet contact portion 9a enters the latch case 1 through the opening 103c provided in the back plate 103 (latch case 1), contacts the action portion 5b of the ratchet 5, and releases the ratchet 5 from the engagement position. This is the part that is moved to the position. The first operation receiving portion 9b is a portion where the release lever 9 rotates clockwise in FIG. 4 when the operation of the first operation lever 12 is performed, and contacts the release lever driving portion 12b of the first operation lever 12. is there. The ratchet 5, release lever 9, and second operation lever 13 are arranged such that the ratchet contact portion 9 a and the first operation receiving portion 9 b are displaced in the axial direction of the ratchet shaft 6. The second operation receiving portion 9c is located between the rotation center (release lever shaft 10) of the release lever 9 and the ratchet contact portion 9a, and the release lever 9 is operated when the second operation lever 13 is operated. 4 is a portion that contacts the second operation lever 13 so as to rotate clockwise. The first holding lever engaging portion 9d is a portion that engages with the first holding lever 14 when the release lever 9 moves the ratchet 5 from the engagement position to the engagement release position.

  The first operating lever 12 includes a transmission member connecting portion 12a and a release lever driving portion 12b, and is rotatably supported by the release lever shaft 10. Note that the urging force of the third coil spring 11 does not act on the first operating lever 12. The first operating lever 12 is supported on the release lever shaft 10 so as to be rotatable independently of the release lever 9, and is released when the release lever 9 is pressed by the release lever driving portion 12 b and by the release lever 9. Only when the lever driving part 12b is pressed, it rotates integrally with the release lever 9.

  The transmission member connecting portion 12a is a portion that connects a transmission member that transmits an operation of an open door device (for example, a key cylinder) provided to the back door to the first operation lever 12. This transmission member is connected to the first operation lever 12 so that the first operation lever 12 rotates clockwise in FIG. 4 when the opening door device is operated. When the first operation lever 12 rotates clockwise in FIG. 4 in response to the operation of the opening door device, the release lever driving unit 12b presses the first operation receiving unit 9b of the release lever 9 to release the release lever 9. Is a portion for rotating the lens clockwise in FIG.

  The second operation lever 13 has an open door operation receiving portion 13 a, a release lever driving portion 13 b, and a release lever driven portion 13 c, and is rotatably supported by the ratchet shaft 6.

  The open door operation receiving portion 13 a is a portion that receives pressure from a transmission member that transmits an operation of an open door device (for example, an open handle) provided in the vehicle to the second operation lever 13, and is an opening provided in the latch case 1. It protrudes out of the latch case 1 through 103d. The transmission member and the second operation lever 13 are brought into contact with each other so that the second operation lever 13 rotates counterclockwise in FIG. 3 when the opening door device is operated. When the second operating lever 13 rotates counterclockwise in FIG. 3 in response to the operation of the opening door device, the release lever driving portion 13b presses the second operation receiving portion 9c of the release lever 9 to release the release lever. 9 is a portion for rotating the screw 9 clockwise in FIG. The release lever driven portion 13c is pressed when the second operation receiving portion 9c of the release lever 9 rotates clockwise in FIG. 4, thereby rotating the second operation lever 13 counterclockwise in FIG. It is a part to be made.

  The holding mechanism includes a first holding lever 14, a first holding lever shaft 15, a fourth coil spring 16, a second holding lever 17, and a second holding lever shaft 18.

  The first holding lever 14 has a release lever locking portion 14a and an action portion 14b, and is rotatably supported by a first holding lever shaft 15 attached to the lever arrangement portion 103b. The first holding lever 14 is engaged with the fourth coil spring 16 so that the urging force by the elastic restoring force of the fourth coil spring 16 attached to the first holding lever shaft 15 always acts clockwise in FIG. .

  The release lever locking portion 14a engages with the first holding lever engaging portion 9d of the release lever 9 when the ratchet 5 is moved to the mesh release position by the release lever 9, and the release lever 9 is rotated by the urging force. This is the part to stop. The action portion 14b is a portion with which the second holding lever 17 abuts to release the engagement between the first holding lever 14 and the release lever 9.

  The second holding lever 17 includes a latch contact portion 17a and a first holding lever driving portion 17b, and is rotatably supported by a second holding lever shaft 18 attached to the cover portion 103a of the back plate 103. is there. The second holding lever shaft 18 extends from the cover portion 103 a of the back plate 103 toward the latch case 1, and the second holding lever 17 has a portion other than the first holding lever driving portion 17 b in the latch case 1. Is housed in.

  The latch contact portion 17a contacts the second holding lever driving portion 2e of the latch 2 when the latch 2 rotates counterclockwise in FIG. 3 and moves from the half latch position to the open position, and the second holding lever driving portion. This is the part that rotates the second holding lever 17 clockwise in FIG. 3 by pressing from 2e. The first holding lever driving portion 17b goes out of the latch case 1 through the opening 103e provided in the back plate 103 (latch case 1), and when the second holding lever 17 rotates clockwise in FIG. This is a portion that contacts the first holding lever 14 so that the engagement between the first holding lever 14 and the release lever 9 is released.

  As described above, in the door lock device of the present embodiment, the release lever 9 and the ratchet 5 are in the latch case 1 and the side where the rotation center (the ratchet shaft 6) of the ratchet 5 is located with the striker entry groove 1S as a boundary. It is in contact with. In the door lock device of the present embodiment, the second holding lever 17 that moves the first holding lever 14 from the engagement position with the release lever 9 to the disengagement position is in the latch case 1 and enters the striker. It is arranged on the side where the rotation center (latch shaft 3) of the latch 2 is located with the groove 1S as a boundary. Therefore, in the door lock device of this embodiment, the lever disposition portion 103b for disposing the mesh release mechanism and the holding mechanism can be reduced, and the door lock device can be downsized.

  Furthermore, the second operation lever 13 in the door lock device of the present embodiment is overlapped with the ratchet 5 so as to contact the second operation receiving portion 9c located between the rotation center of the release lever 9 and the ratchet contact portion 9a. It is arranged and supported rotatably on the ratchet shaft 6. In addition, the ratchet 5, the release lever 9, and the second operation lever 13 are arranged such that the ratchet contact portion 9 a and the first operation receiving portion 9 b are displaced in the axial direction of the ratchet shaft 6. Therefore, the second operation lever 13 can be efficiently disposed in the latch case 1 and the contact position between the ratchet 5 and the release lever 9 and the contact position between the second operation lever 13 and the release lever 9 can be determined. It can be set efficiently in the latch case 1. That is, the door lock device of the present embodiment prevents the door lock device from being enlarged by providing the second operation lever 13.

  Next, the operation of the door lock device according to this embodiment will be described. In the following description of the operation, the state shown in FIGS. 3 and 4, that is, the latch 2 engaged with the striker S meshes with the ratchet 5 at the full latch position, and the back door is fully closed with respect to the vehicle body. Start from the state.

  FIG. 5 is a plan view showing a state of the door lock device when the first operating lever is operated to release the engagement between the latch and the ratchet at the full latch position and the latch reaches the half latch position. FIG. 6 is a front view of the door lock device shown in FIG. FIG. 7 is a plan view showing a state of the door lock device when the latch reaches the open position beyond the half latch position shown in FIG. FIG. 8 is a front view of the door lock device shown in FIG. FIG. 9 is a plan view showing a state of the door lock device when the striker enters the striker entry groove again after reaching the open position and the latch reaches the half latch position. FIG. 10 is a plan view showing the state of the door lock device when the second operation lever is operated to release the engagement between the latch and the ratchet at the full latch position and the latch reaches the half latch position. FIG. 11 is a front view of the door lock device shown in FIG.

  In a vehicle in which the door lock device of this embodiment is attached to a back door, when a key is inserted into a key cylinder (open door device) provided on the back door and rotated, the operation is transmitted to the first operation lever 12. . The first operation lever 12 rotates clockwise in FIG. 4 and presses the first operation receiving portion 9b of the release lever 9 with the release lever driving portion 12b. When the release lever 9 receives pressure from the release lever driving portion 12b, the release lever 9 rotates clockwise in FIG. 4 and presses the action portion 5b of the ratchet 5. When the ratchet 5 is pressed by the release lever 9, it rotates counterclockwise in FIG. 3 against the urging force from the second coil spring 7 acting on the ratchet 5, and moves to the mesh release position. When the ratchet 5 moves to the engagement release position, the engagement between the full latch locking portion 2c of the latch 2 and the engagement portion 5a of the ratchet 5 is released, so that the latch 2 is driven by the biasing force from the first coil spring 4. 3 rotates counterclockwise. Therefore, when the operation of the key cylinder is transmitted to the first operation lever 12, the door lock device is in the state shown in FIGS.

  When the release lever 9 rotates clockwise in FIG. 4 to move the ratchet 5 to the mesh release position, the first holding lever engaging portion 9d of the release lever 9 is moved to the first position as shown in FIGS. 1 The engaging lever 14a of the holding lever 14 is engaged. The first holding lever 14 engaged with the release lever 9 is urged by the fourth coil spring 16 in the clockwise direction in FIG. Therefore, even if the first operating lever 12 returns to the initial position indicated by the two-dot chain line in FIG. As long as the release lever 9 and the ratchet 5 are not released, the states shown in FIGS. 5 and 6 are maintained. That is, even when the latch 2 reaches the half latch position, the ratchet 5 is held at the mesh release position, and the meshing portion 5a of the ratchet 5 does not mesh with the half latch locking portion 2d of the latch 2. Therefore, the latch 2 goes to the open position beyond the half latch position.

  When the release lever 9 rotates clockwise in FIG. 4, the second operation receiving portion 9 c presses the release lever driven portion 13 c of the second operation lever 13, so that the second operation lever 13 has the ratchet 5. At the same time, it rotates counterclockwise in FIG. Therefore, when the first holding lever engaging portion 9a of the release lever 9 is engaged with the release lever engaging portion 14a of the first holding lever 14 by the above-described meshing release operation, the second operating lever 13 has the latch 2 in the full latch position. It is held at a position rotated counterclockwise in FIG.

  When the latch 2 goes to the open position beyond the half-latch position, the second holding lever driving part 2e provided on the latch 2 comes into contact with and presses the latch contact part 17a of the second holding lever 17 in the middle. When the second holding lever 17 receives a pressure from the second holding lever driving unit 2e, the second holding lever 17 rotates clockwise in FIG. 5 and the first holding lever driving unit 17b presses the action portion 14b of the first holding lever 14. . When the first holding lever 14 receives a pressure from the first holding lever driving portion 17b, the first holding lever 14 rotates counterclockwise in FIG. 6 against the urging force from the fourth coil spring 16, and the release lever locking portion 14a. And the release lever 9 are moved to a position (engagement release position) where the engagement between the release lever 9 and the first holding lever engaging portion 9d can be released. When the first holding lever 14 moves to the disengagement position, the engagement between the release lever locking portion 14a of the first holding lever 14 and the first holding lever engaging portion 9d of the release lever 9 is released. The lever 9 rotates counterclockwise in FIG. 6 by the urging force from the third coil spring 11. Therefore, the ratchet 5 rotates clockwise in FIG. 5 by the urging force from the second coil spring 7 and returns to the initial position where it contacts the stopper 8 from the mesh release position. When the release lever 9 rotates counterclockwise in FIG. 6, the second operation receiving portion 9c presses the release lever driving portion 13b of the second operation lever 13, so that the second operation lever 13 is also in the initial position (latch 2). Return to the position when the fully latched position. Therefore, when the latch 2 reaches from the full latch position to the open position beyond the half latch position, the door lock device is in the state shown in FIGS.

  When the latch 2 reaches the open position, the hook portion 2b is accommodated in the latch case 1, and the striker S can be detached from the striker engaging groove 2a of the latch 2 and the striker entry groove 1S of the latch case 1. Therefore, when the back door is moved in the opening door direction, the striker S is disengaged from the striker engagement groove 2a of the latch 2 and the striker entry groove 1S of the latch case 1, as shown in FIGS. 7 and 8, and the back door is opened. be able to. When the latch 2 reaches the open position, for example, the hook portion 2b engages with a locking portion (not shown) provided in the latch case 1, and the counterclockwise direction in FIG. Rotation is prevented.

  Thereafter, when the back door is closed, the striker S enters the striker entry groove 1S of the latch case 1 and the striker engagement groove 2a of the latch 2, and the latch 2 is engaged with the striker S. When the striker S moves to the back side of the striker entry groove 1S, the latch 2 rotates clockwise in FIG. 8 against the urging force from the first coil spring 4 and reaches the half latch position. At this time, the ratchet 5 is in an initial position, that is, a position where it can mesh with the latch 2 as shown in FIG. Therefore, when the latch 2 reaches the half latch position from the open position, the meshing portion 5 a of the ratchet 5 meshes with the half latch locking portion 2 d of the latch 2. Therefore, when the latch 2 reaches the half latch position from the open position, the door lock device is in the state shown in FIG. 9, and the latch 2 can be temporarily held at the half latch position.

  When the striker S moves further into the striker entry groove 1S, the latch 2 rotates clockwise in FIG. 9 against the urging force from the first coil spring 4 and reaches the full latch position. As a result, as shown in FIG. 3, the meshing portion 5a of the ratchet 5 meshes with the full latch locking portion 2c of the latch 2, and the back door is fully closed.

  On the other hand, in a vehicle in which the door lock device of the present embodiment is attached to the back door, when an open handle (open door device) provided in the vehicle is operated, the operation is applied to the open door operation receiving portion 13a of the second operation lever 13. Communicated. When the operation of the open handle (pressing of the transmission member) is received by the open door operation receiving portion 13a, the second operation lever 13 rotates counterclockwise in FIG. The operation receiving part 9c is pressed. When the release lever 9 receives a pressure from the second operation lever 13, the release lever 9 rotates clockwise in FIG. 4 and presses the action portion 5 b of the ratchet 5. When the ratchet 5 is pressed by the release lever 9, it rotates counterclockwise in FIG. 3 against the urging force from the second coil spring 7 and moves to the mesh release position. When the ratchet 5 moves to the engagement release position, the engagement between the full latch locking portion 2c of the latch 2 and the engagement portion 5a of the ratchet 5 is released, so that the latch 2 is driven by the biasing force from the first coil spring 4. 3 rotates counterclockwise. Therefore, when the operation of the open handle is transmitted to the second operation lever 13, the door lock device is in the state shown in FIGS.

  Even when the ratchet 5 is moved to the mesh release position by the operation of the open handle (the operation of the second operation lever 13), as shown in FIGS. 10 and 11, the first holding lever engaging portion 9d of the release lever 9 is The release lever locking portion 14a of the first holding lever 14 is engaged. The first holding lever 14 engaged with the release lever 9 is applied with the counterclockwise urging force in FIG. 11 by the fourth coil spring 16. Therefore, unless the engagement between the release lever 9 and the first holding lever 14 is released, the release lever 9 and the ratchet 5 are maintained in the state shown in FIGS. 10 and 11. Therefore, even when the latch 2 reaches the half latch position, the ratchet 5 is held in the mesh release position, and the meshing portion 5a of the ratchet 5 does not mesh with the half latch locking portion 2d of the latch 2. As a result, the latch 2 goes to the open position beyond the half latch position.

  Although illustration is omitted, when the latch 2 moves beyond the half-latch position to the open position, the second holding lever driving portion 2e provided in the latch 2 presses the second holding lever 17 on the way to the open position. . Therefore, even when the ratchet 5 is moved to the mesh release position by the second operation lever 13, when the latch 2 reaches the open position, as shown in FIGS. 7 and 8, the first holding lever 14 and the release lever 9 Is released, and the release lever 9 and the ratchet 5 return to the initial positions, in other words, the engagement portion 5a of the ratchet 5 returns to the position where it can engage with the full latch engagement portion 2c and the half latch engagement portion 2d of the latch 2. When the release lever 9 returns to the initial position, the second operation lever 13 also returns to the initial position by pressing the release lever 9 from the second operation receiving portion 9c.

  Thus, in the door lock device of the present embodiment, the first operation lever 12 and the second operation lever 13 are linked to separate open door devices. And the 1st operation lever 12 and the 2nd operation lever 13 operate | move separately, if the linked open door apparatus is operated, and move the ratchet 5 to a mesh release position via the release lever 9. FIG. Therefore, even when either the first operation lever 12 or the second operation lever 13 is operated to disengage the latch 2 and the ratchet 5 at the full latch position, the latch 2 and the ratchet 5 are engaged at the half latch position. I can prevent it. Furthermore, the door lock device of the present embodiment can engage the latch 2 and the ratchet 5 at the half latch position when the back door is closed. Therefore, when the back door is opened, the back door can be opened and closed without being aware that the latch 1 and the ratchet 5 do not mesh at the half latch position, and convenience is not impaired. In addition, operating individually means that when one open door device is operated, the operation is not transmitted to the other open door device via the first operation lever 12 and the second operation lever.

  As described above, the door lock device of the present embodiment is configured so that the ratchet 5 can be moved to the mesh release position by either the first operation lever 12 or the second operation lever 13. Therefore, in the door lock device of the present embodiment, the open door device (open handle) provided in the vehicle and the open door device (key cylinder) provided in the back door can be connected to different operation levers. Therefore, the door lock device of this embodiment can improve the operability of the operation of opening the door provided on the vehicle, particularly the back door.

  Further, since the second operation lever 13 is projected from the opening 103d provided on the side surface of the latch case 1, when the door lock device of this embodiment is attached to the back door, the operation of the open door device provided in the vehicle is performed. Can be arranged on the vehicle body side, that is, in the vicinity of the striker S provided on the vehicle body. In that case, the transmission member that transmits the operation of the open door device provided in the vehicle to the door lock device can be disposed without greatly detouring by a method such as drawing into the internal space of the back door through the vicinity of the hinge. Therefore, when the door lock device of this embodiment is attached to the back door, the configuration of the transmission member that transmits the operation of the open door device provided in the vehicle to the door lock device can be simplified.

  Furthermore, in the door lock device of the present embodiment, the release lever 9 is moved by the first operation lever 12 to move the ratchet 5 to the mesh release position, and the release lever 9 is engaged with the first holding lever 14. Even in the state where the ratchet 5 is held at the mesh release position, the first operation lever 12 can return to the initial position. Therefore, it is not necessary to provide the first operating lever 12 with a long hole for releasing the release lever 9, for example. In addition, in the door lock device of the present embodiment, the mesh release mechanism is disposed on the side where the rotation center (the ratchet shaft 6) of the ratchet 5 is located with the striker entry groove 1S in the latch case 1 as a boundary. A holding mechanism is disposed on the side where the center (latch shaft 3) is located. Therefore, the components of the mesh release mechanism and the components of the holding mechanism can be efficiently disposed in the latch case 1. In particular, in the door lock device of the present embodiment, the second operation lever 13 is overlapped with the ratchet 5 so as to contact the second operation receiving portion 9c located between the rotation center of the release lever 9 and the ratchet contact portion 9a. The ratchet shaft 6 is rotatably supported by the ratchet shaft 6, and the ratchet 5, the release lever 9, and the second operation lever 13 are arranged so that the ratchet contact portion 9 a and the first operation receiving portion 9 b are displaced in the axial direction of the ratchet shaft 6. Is arranged. Therefore, the second operation lever 13 can be efficiently disposed in the latch case 1 and the contact position between the ratchet 5 and the release lever 9 and the contact position between the second operation lever 13 and the release lever 9 can be determined. It can be set efficiently in the latch case 1. Therefore, the door lock device of this embodiment can be reduced in size.

  In addition, when the door lock device of the present embodiment is attached to the back door, when the open back door is closed, the latch and the ratchet can be engaged at the half latch position as in the conventional case. Therefore, when the back door is opened, the back door can be opened and closed without being aware that the latch 2 and the ratchet 5 do not mesh at the half latch position, and convenience is not impaired.

(Embodiment 2)
FIG. 12 is a plan view showing a schematic configuration inside the latch case 1 in the door lock device according to the second embodiment of the present invention. FIG. 13 is a front view showing a schematic configuration inside the latch case.

  As in the first embodiment, the door lock device of the present embodiment is attached to an opening / closing body that can be opened and closed on the vehicle body, and holds the opening / closing body in a closed door state with respect to the vehicle body. When the opening / closing body is a back door disposed at the rear portion of the vehicle body, and the back door can be opened and closed with respect to the vehicle body by the upper hinge, the door lock device is attached to the lower end of the back door.

  The door lock device of this embodiment includes a latch case 1, a latch mechanism, a meshing release mechanism, and a holding mechanism, which are configured as shown in FIGS. The door lock device of the present embodiment differs from the door lock device of the first embodiment in that the ratchet 5 is provided with an open door operation receiving portion 5c and the second operation lever 13 is omitted, and the second holding lever 17 There are three points: a point where the holding method is changed, and a point where the timing of releasing the engagement between the release lever 9 and the first holding lever 14 is changed.

  The latch case 1 includes a body 101, a cover plate 102, and a back plate 103.

  The latch mechanism includes a latch 2, a latch shaft 3, a first coil spring 4, a ratchet 5, a ratchet shaft 6, and a second coil spring 7.

  The latch 2 has a striker engagement groove 2a, a hook portion 2b, a full latch engagement portion 2c, a half latch engagement portion 2d, and a second holding lever drive portion 2e, and is attached to the latch case 1. The latch shaft 3 is rotatably supported. The latch 2 is engaged with the first coil spring 4 so that the counterclockwise biasing force in FIG. 12 due to the elastic restoring force of the first coil spring 4 attached to the latch shaft 3 always acts.

  The striker engaging groove 2a, the hook portion 2b, the full latch locking portion 2c, and the half latch locking portion 2d are provided in the same manner as the latch 2 shown in the first embodiment. The second holding lever driving unit 2e is a portion that presses the second holding lever 17 and rotates the second holding lever 17 clockwise in FIG. 12 when the latch 2 rotates from the half latch position to the full latch position. is there.

  The ratchet 5 has a meshing part 5 a, an action part 5 b, and an open door operation receiving part 5 c, and is rotatably supported by a ratchet shaft 6 attached to the latch case 1. The ratchet 5 is engaged with the second coil spring 7 so that the clockwise urging force in FIG. 12 due to the elastic restoring force of the second coil spring 7 attached to the ratchet shaft 6 always acts. The ratchet 5 is prevented from rotating clockwise in FIG. 12 at a predetermined rotational position (initial position) by a stopper 8 attached to the latch case 1 (cover plate 102).

  The meshing part 5a and the action part 5b are provided in the same manner as the ratchet 5 shown in the first embodiment. The open door operation receiving portion 5c is a portion that comes into contact with a transmission member that transmits an operation of an open door device (for example, an open handle) provided in the vehicle to the ratchet 5, and receives pressure from the transmission member. The open door operation receiving portion 5 c corresponds to the open door operation receiving portion 13 a in the second operation lever 13 shown in the first embodiment, and protrudes out of the latch case 1 through the opening 103 d provided in the latch case 1. The transmission member and the open door operation receiving portion 5c are brought into contact so that the ratchet 5 rotates counterclockwise in FIG. 12 when the open door device is operated.

  The latch 2 and the ratchet 5 are arranged so that the rotation center of the latch 2 (latch shaft 3) and the rotation center of the ratchet 5 (ratchet shaft 6) are positioned on both sides with the striker entry groove 1S as a boundary. is there.

  The mesh release mechanism includes a release lever 9, a release lever shaft 10, a third coil spring 11, and a first operation lever 12.

  The release lever 9 has a ratchet contact portion 9a, a first operation receiving portion 9b, and a first holding lever engaging portion 9d, and is rotatably supported by a release lever shaft 10 attached to the lever arrangement portion 103b. It is. The release lever 9 is engaged with the third coil spring 11 so that the urging force by the elastic restoring force of the third coil spring 11 attached to the release lever shaft 10 always acts counterclockwise in FIG.

  The ratchet contact portion 9a, the first operation receiving portion 9b, and the first holding lever engaging portion 9d are provided in the same manner as the release lever 9 shown in the first embodiment. The first operating lever 12 is provided in the same manner as that shown in the first embodiment.

  The holding mechanism includes a first holding lever 14, a first holding lever shaft 15, a fourth coil spring 16, and a second holding lever 17. The first holding lever 14 is provided in the same manner as that shown in the first embodiment.

  The second holding lever 17 has a latch contact portion 17a and a first holding lever drive portion 17b, and is rotatably supported by the latch shaft 3. The second holding lever 17 is housed in the latch case 1 except for the first holding lever driving portion 17b.

  The latch contact portion 17a contacts the second holding lever drive portion 2e of the latch 2 when the latch 2 rotates clockwise in FIG. 12 and moves from the half latch position to the full latch position, and the second holding lever drive portion 2e. This is a portion for rotating the second holding lever 17 clockwise in FIG. The first holding lever driving portion 17b is out of the latch case 1 through the opening 103e provided in the back plate 103 (latch case 1), and when the second holding lever 17 rotates clockwise in FIG. This is a portion that contacts the first holding lever 14 in the direction in which the engagement between the first holding lever 14 and the release lever 9 is released.

  As described above, the door lock device of the present embodiment is provided with the mesh release mechanism on the side where the rotation center (the ratchet shaft 6) of the ratchet 5 is located with the striker entry groove 1S in the latch case 1 as a boundary. A holding mechanism is disposed on the side where the rotation center (latch shaft 3) is located. The release lever 9 and the ratchet 5 are brought into contact with each other in the latch case 1, and the second holding lever 17 is disposed in the latch case 1. Therefore, in the door lock device of this embodiment, the lever disposition portion 103b for disposing the mesh release mechanism and the holding mechanism can be reduced, and the door lock device can be downsized.

  Furthermore, in the door lock device of the present embodiment, the open door operation receiving portion 5c provided in the ratchet 5 is protruded out of the latch case 1 through the opening 103d provided in the side surface of the latch case 1, so that the door lock of the first embodiment is obtained. The second operation lever 13 in the apparatus is omitted. Therefore, the door lock device of the present embodiment can be made smaller than the door lock device of the first embodiment.

  Next, the operation of the door lock device according to this embodiment will be described. In the following description of the operation, the state shown in FIGS. 12 and 13, that is, the latch 2 engaged with the striker S meshes with the ratchet 5 at the full latch position, and the back door is fully closed with respect to the vehicle. Start from where it is.

  FIG. 14 is a plan view showing a state of the door lock device when the first operation lever is operated to release the engagement between the latch and the ratchet at the full latch position and the latch reaches the half latch position. FIG. 15 is a front view of the door lock device shown in FIG. FIG. 16 is a plan view showing a state of the door lock device when the latch reaches the open position beyond the half latch position shown in FIG. 14. 17 is a front view of the door lock device shown in FIG. FIG. 18 is a plan view showing a state of the door lock device immediately after the latch and the ratchet are disengaged in the full latch position by pressing the open door operation receiving portion of the ratchet. FIG. 19 is a plan view showing a state of the door lock device when the latch reaches the half latch position from the position shown in FIG. 20 is a front view of the door lock device shown in FIG. FIG. 21 is a plan view showing the state of the door lock device when the latch and the ratchet are disengaged at the half latch position shown in FIG. 19 by the pressing of the open door operation receiving portion of the ratchet and the latch reaches the open position. FIG. FIG. 22 is a front view of the door lock device shown in FIG.

  In a vehicle in which the door lock device of this embodiment is attached to a back door, when a key is inserted into a key cylinder (open door device) provided on the back door and rotated, the operation is transmitted to the first operation lever 12. . The first operation lever 12 rotates clockwise in FIG. 13 and presses the first operation receiving portion 9b of the release lever 9 by the release lever driving portion 12b. When the release lever 9 receives pressure from the release lever driving portion 12b, the release lever 9 rotates clockwise in FIG. 13 and presses the action portion 5b of the ratchet 5. When the ratchet 5 is pressed by the release lever 9, it rotates counterclockwise in FIG. 12 against the urging force from the second coil spring 7 and moves to the mesh release position. When the ratchet 5 moves to the engagement release position, the engagement between the full latch locking portion 2c of the latch 2 and the engagement portion 5a of the ratchet 5 is released, so that the latch 2 is driven by the biasing force from the first coil spring 4. Rotate counterclockwise at 12. Therefore, when the engagement between the latch 2 and the ratchet 5 in the full latch position is released by the operation of the key cylinder (the operation of the first operation lever 12), the door lock device when the latch 2 reaches the half latch position is The state shown in FIGS. 14 and 15 is obtained.

  When the release lever 9 rotates clockwise in FIG. 13 to move the ratchet 5 to the mesh release position, the first holding lever engaging portion 9d of the release lever 9 is moved to the first position as shown in FIGS. 1 The engaging lever 14a of the holding lever 14 is engaged. The first holding lever 14 engaged with the release lever 9 is urged by the fourth coil spring 16 in the clockwise direction in FIG. Therefore, even if the first operating lever 12 returns to the initial position indicated by the two-dot chain line in FIG. 15, that is, the position before the operation of the key cylinder is transmitted, the engagement between the release lever 9 and the first holding lever 14 is achieved. As long as is not released, the release lever 9 and the ratchet 5 are maintained in the state shown in FIGS. That is, even when the latch 2 reaches the half latch position, the ratchet 5 is held at the mesh release position, and the meshing portion 5a of the ratchet 5 does not mesh with the half latch locking portion 2d of the latch 2. Therefore, the latch 2 goes to the open position beyond the half latch position.

  When the first holding lever engaging portion 9a of the release lever 9 is engaged with the release lever locking portion 14a of the first holding lever 14, the second operating lever 13 is moved by the latch 2 as shown in FIGS. It is held at a position rotated more clockwise in FIG. 12 than in the full latch position. The first holding lever engaging portion 9a and the release lever locking portion 14a are engaged by pressing the latch contact portion 17a of the second holding lever 17 with the second holding lever driving portion 2e provided in the latch 2. Canceled. As described above, the second holding lever drive unit 2e contacts and presses the latch contact portion 17a when the latch 2 moves from the half latch position to the full latch position. Therefore, even when the latch 2 reaches the open position, the engagement between the release lever 9 and the first holding lever 14 is not released. Therefore, when the engagement between the latch 2 and the ratchet 5 at the full latch position is released by the operation of the key cylinder (the operation of the first operation lever 12), when the latch 2 exceeds the half latch position and reaches the open position, The locking device is in the state shown in FIGS. 16 and 17. That is, in the locking device of the present embodiment, when the mesh release operation is performed via the first operation lever 12, even if the latch 2 reaches the open position, the second operation lever 13 is more than when the latch 2 is in the full latch position. Is also held at a position rotated counterclockwise in FIG.

  When the latch 2 reaches the open position, the hook portion 2b is accommodated in the latch case 1, and the striker S can be detached from the striker engaging groove 2a of the latch 2 and the striker entry groove 1S of the latch case 1. Therefore, when the back door is moved in the opening door direction, the striker S is disengaged from the striker engagement groove 2a of the latch 2 and the striker entry groove 1S of the latch case 1 as shown in FIGS. 16 and 17, and the back door is opened. be able to. When the latch 2 reaches the open position, for example, the hook portion 2b engages with a locking portion (not shown) provided in the latch case 1, and the counterclockwise direction in FIG. Rotation is prevented.

  Thereafter, when the back door is closed, the striker S enters the striker entry groove 1S of the latch case 1 and the striker engagement groove 2a of the latch 2, and the latch 2 is engaged with the striker S. When the striker S moves to the back side of the striker entry groove 1S, the latch 2 rotates clockwise in FIG. 16 against the urging force from the first coil spring 4 and reaches the half latch position. At this time, the ratchet 5 remains held at the mesh release position as shown in FIG. Therefore, even if the latch 2 reaches the half latch position from the open position, the meshing portion 5a of the ratchet 5 does not mesh with the half latch locking portion 2d of the latch 2.

  Thereafter, when the striker S moves further to the deeper side of the striker entry groove 1S, the latch 2 rotates clockwise in FIG. 16 against the biasing force from the first coil spring 4 and reaches the full latch position. When the latch 2 goes to the full latch position beyond the half-latch position, the second holding lever drive part 2e provided on the latch 2 comes into contact with and presses the latch abutting part 17a of the second holding lever 17 in the middle. When the second holding lever 17 receives a pressure from the second holding lever driving unit 2e, the second holding lever 17 rotates clockwise in FIG. 16, and the first holding lever driving unit 17b presses the action portion 14b of the first holding lever 14. . When the first holding lever 14 is pressed by the second holding lever 17, it rotates counterclockwise in FIG. 17 against the urging force from the fourth coil spring 16, and releases the release lever locking portion 14a. The lever 9 moves to a position (engagement release position) where the engagement with the first holding lever engaging portion 9d can be released. When the first holding lever 14 moves to the disengagement position, the engagement between the release lever locking portion 14a of the first holding lever 14 and the first holding lever engaging portion 9d of the release lever 9 is released. The lever 9 rotates counterclockwise in FIG. 17 by the biasing force from the third coil spring 11. Therefore, the ratchet 5 rotates clockwise in FIG. 16 by the urging force from the second coil spring 7 and returns to the initial position where it contacts the stopper 8 from the mesh release position. Therefore, when the latch 2 reaches the full latch position from the open position beyond the half latch position, the door lock device returns to the state shown in FIGS. As a result, as shown in FIG. 12, the meshing portion 5a of the ratchet 5 meshes with the full latch locking portion 2c of the latch 2, and the back door is fully closed.

  On the other hand, in a vehicle in which the door lock device of the present embodiment is attached to the back door, when an open handle (open door device) provided in the vehicle is operated, the operation is transmitted to the open door operation receiving portion 5c of the ratchet 5. . The ratchet 5 rotates counterclockwise in FIG. 12 against the urging force from the second coil spring 7 when the operation of the open handle (pressing of the transmission member) is received by the open door operation receiving portion 5c, and the engagement is released. Move to position. When the ratchet 5 moves to the engagement release position, the engagement between the full latch locking portion 2c of the latch 2 and the engagement portion 5a of the ratchet 5 is released, so that the latch 2 is driven by the biasing force from the first coil spring 4. Rotate counterclockwise at 12. Therefore, when the operation of the open handle is transmitted to the ratchet 5, the door lock device immediately after the engagement between the latch 2 and the ratchet 5 is released is in the state shown in FIG.

  When the ratchet 5 is directly moved to the mesh release position by operating the open handle, the release lever 9 does not move. Therefore, when the open handle is returned to the original position (the position before the operation) immediately after the open handle is operated, the ratchet 5 rotates clockwise by the urging force from the second coil spring 7, and is shown by a two-dot chain line in FIG. As a result, it contacts the latch 2.

  Thereafter, when the latch 2 is rotated counterclockwise in FIG. 18 by the urging force from the first coil spring 4 to reach the half latch position, the half latch engaging portion 2d of the latch 2 and the meshing portion 5a of the ratchet 5 are connected. Mesh. Therefore, if the back door does not open to the point where the latch 2 exceeds the half-latch position because the open door operation time by the open handle is short or the movement of the back door is slow due to freezing, etc. The door lock device at the time when 2 reaches the half latch position is in the state shown in FIGS. 19 and 20.

  If the latch 2 and the ratchet 5 are engaged at the half latch position even though the open door is operated by the open handle, the open door operation by the open handle is performed again, and the latch 2 at the half latch position is Release the mesh with the ratchet 5. Then, the latch 2 rotates counterclockwise in FIG. 19 by the urging force from the first coil spring 4 and reaches the open position. When the open door operation is performed with the open handle, the release lever 9 does not move as described above. Therefore, even if the engagement between the latch 2 and the ratchet 5 at the half latch position is released by the opening door operation by the open handle, the release lever 9 and the first holding lever 14 are not engaged. Accordingly, when the engagement of the latch 2 and the ratchet 5 in the full latch position is released by the pressing of the open door operation receiving portion 5c of the ratchet 5, when the latch 2 reaches the open position beyond the half latch position from the full latch position, The locking device is in the state shown in FIGS. 21 and 22.

  When the ratchet 5 is moved directly to the mesh release position by operating the open handle, the release lever 9 and the first operation lever 12 do not move. Therefore, the movement of the ratchet 5 due to the operation of the open handle provided in the vehicle is not transmitted to the transmission member or the key cylinder connected to the first operation lever 12.

  Although not shown, when the ratchet 5 is directly moved to the mesh release position by operating the open handle and the latch 2 is moved from the full latch position to the open position, the release lever 9 and the first holding lever 14 are not engaged. Since they do not match, the ratchet 5 can swing between the initial position and the mesh release position. Therefore, when the ratchet 5 is directly moved to the mesh release position by operating the open handle and the latch 2 is moved from the full latch position to the open position, when the back door is subsequently closed, the ratchet is reached when the latch 2 reaches the half latch position. 5 meshing portion 5a meshes with half latch locking portion 2d of latch 2.

  Thus, in the door lock device of the present embodiment, when the engagement between the latch 2 and the ratchet 5 at the full latch position is released by the operation of the first operating lever 12, the latch 2 and the ratchet 5 at the half latch position are released. To prevent biting. Further, in the door lock device of the present embodiment, when the back door is opened by moving the latch 2 to the open position by the operation of the first operation lever 12, the latch 2 is operated at the half latch position in the operation of closing the back door immediately after that. And ratchet 5 do not mesh. Therefore, when the back door is opened and closed from the outside of the vehicle, it is possible to prevent a half door state due to the engagement of the latch 2 and the ratchet 5 at the half latch position, and in other cases, the back door opening and closing operation similar to the conventional can be performed. Convenience is improved.

  As described above, the door lock device of the present embodiment can move the ratchet 5 to the mesh release position by any of the operations of the first operation lever 12 and the open door operation receiving portion 5c of the ratchet 5. Therefore, in the door lock device of the present embodiment, the open door device (open handle) provided in the vehicle and the open door device (key cylinder) provided in the back door can be connected to different operation levers. Therefore, the door lock device of this embodiment can improve the operability of the operation of opening the door provided on the vehicle, particularly the back door.

  Further, since the open door operation receiving portion 5c provided on the ratchet 5 is projected from the opening 103d provided on the side surface of the latch case 1, when the door lock device of this embodiment is attached to the back door, it is provided in the vehicle. The parts that transmit the operation of the open door device to the open door operation receiving portion 5c (ratchet 5) can be arranged on the vehicle body side, that is, in the vicinity of the striker S provided on the vehicle body. In that case, the transmission member that transmits the operation of the open door device provided in the vehicle to the door lock device can be disposed without greatly detouring by a method such as drawing into the internal space of the back door through the vicinity of the hinge. Therefore, when the door lock device of this embodiment is attached to the back door, the configuration of the transmission member that transmits the operation of the open door device provided in the vehicle to the door lock device can be simplified.

  In the door lock device of the present embodiment, the ratchet 5 is moved to the mesh release position by moving the release lever 9 with the first operation lever 12, and the release lever 9 is engaged with the first holding lever 14. Even in the state where the ratchet 5 is held at the mesh release position, the first operation lever 12 can return to the initial position. Therefore, it is not necessary to provide the first operating lever 12 with a long hole for releasing the release lever 9, for example. Furthermore, in the door lock device of the present embodiment, the mesh release mechanism is disposed on the side where the rotation center (ratchet shaft 6) of the ratchet 5 is located with the striker entry groove 1S in the latch case 1 as a boundary. A holding mechanism is arranged on the side where the (latch shaft 3) is located. Therefore, the components of the mesh release mechanism and the components of the holding mechanism can be efficiently disposed in the latch case 1. In particular, in the door lock device of the present embodiment, the open door operation receiving portion 5c is provided in the ratchet 5, and the second operation lever 13 in the door lock device of the first embodiment is omitted. Therefore, the door lock device of this embodiment can be reduced in size.

  In addition, when the door lock device of the present embodiment is attached to the back door, when the back door is opened and closed from the outside of the vehicle, the latch 2 and the ratchet 5 in the half latch position can be prevented from being in a half door state, At other times, the same opening / closing operation of the back door can be performed, which improves convenience.

  The door lock device according to the present invention has been specifically described above based on the above embodiment. However, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention. Of course there is.

  For example, the mesh release mechanism and the holding mechanism in the door lock device according to the present invention are not limited to the combinations shown in the above embodiment, and the mesh release mechanism of the first embodiment and the holding mechanism of the second embodiment may be combined. Of course, the holding mechanism of the first embodiment and the mesh release mechanism of the second embodiment may be combined.

  Further, the door lock device according to the present invention can be attached not to the back door (opening / closing body) but to the vehicle body. When the door lock device is attached to the vehicle body, a part for transmitting the operation of the open door device provided on the back door to the second operation lever 13 may be arranged on the back door side, that is, in the vicinity of the striker provided on the back door. it can.

  In the mesh release mechanism of the first embodiment, the first operation lever 12 and the second operation lever 13 both move the ratchet 5 to the mesh release position via the release lever 9. However, the mesh release mechanism is not limited to this, and one or both of the first operation lever 12 and the second operation lever 13 directly move the ratchet 5 to the mesh release position without using the release lever 9. There may be. In that case, the holding mechanism is configured to directly hold the first operating lever 12 and the second operating lever 13. Similarly, the first operation lever 12 in the mesh release mechanism of the second embodiment may also be configured to move the ratchet 5 directly to the mesh release position without using the release lever 9.

DESCRIPTION OF SYMBOLS 1 Latch case 101 Body 102 Cover plate 102a Screw hole 102b Mounting part 103 Back plate 103a Cover part 103b Lever arrangement part 103c, 103d, 103e Opening 1S Strike entry groove 2 Latch 2a Striker engagement groove 2b Hook part 2c Full latch latching part 2d Half latch locking part 2e 2nd holding lever drive part 3 Latch shaft 4 1st coil spring 5 Ratchet 5a Engagement part 5b Action part 5c Opening door operation receiving part 6 Ratchet shaft 7 2nd coil spring 8 Stopper 9 Release lever 9a Ratchet Contact portion 9b First operation receiving portion 9c Second operation receiving portion 9d First holding lever engaging portion 10 Release lever shaft 11 Third coil spring 12 First operation lever 12a Transmission member connecting portion 12b Release lever driving portion 13 Second Operation -13a Open door operation receiving portion 13b Release lever driving portion 13c Release lever driven portion 14 First holding lever 14a Release lever locking portion 14b Action portion 15 First holding lever shaft 16 Fourth coil spring 17 Second holding lever 17a Latch Contact portion 17b First holding lever driving portion 18 Second holding lever shaft S Striker

Claims (10)

When the latch engaged with the striker reaches the full latch position or the half latch position, the ratchet meshes with the latch, and when the latch engages with the ratchet, the latch reaches the open position, and the latch A mesh release mechanism that moves the meshed ratchet from a mesh position to a mesh release position, and the latch that is half when the ratchet meshed with the latch at the full latch position is moved to the mesh release position by the mesh release mechanism. In a door lock device comprising a holding mechanism that holds the ratchet in the mesh release position until it goes to the open position beyond the latch position, and a latch case that houses the latch mechanism,
The mesh release mechanism is linked to a separate open door device, operates when the linked open door device is operated, and moves the ratchet from the mesh position to the mesh release position. A door lock device comprising a lever. The first operation lever is rotatably disposed in a lever disposition portion provided outside the latch case,
The second operation lever is rotatably supported by a support shaft provided inside the latch case, and one end of the second operation lever is disposed so as to protrude outside the latch case through an opening provided in the latch case. The door lock device according to claim 1. The latch case has a striker entry groove into which the striker enters,
The latch and the ratchet can be rotated with respect to the latch case, and the rotation center of the latch and the rotation center of the ratchet are arranged so as to be positioned on both sides with the striker entry groove as a boundary. And
The mesh release mechanism is disposed on the side where the rotation center of the ratchet is located with the striker entry groove as a boundary, and the holding mechanism is disposed on the side where the rotation center of the latch is located with the striker entry groove as a boundary. The door lock device according to claim 1, wherein the door lock device is provided. The mesh release mechanism includes a release lever rotatably disposed on a lever disposed portion provided outside the latch case,
The release lever has an end portion that enters the latch case through an opening provided in the latch case, and extends to a position where the ratchet can be moved from the meshing position to the meshing release position.
The mesh release mechanism moves the ratchet from the mesh position to the mesh release position via the release lever for both the first operation lever and the second operation lever.
2. The door lock device according to claim 1, wherein the holding mechanism holds the release lever that has moved the ratchet to the mesh release position in that state. The ratchet is rotatably supported by a ratchet shaft provided in the latch case,
The ratchet contact portion of the release lever that contacts the ratchet when the ratchet is moved from the mesh position to the mesh release position, and the second operation lever when the ratchet is moved from the mesh position to the mesh release position. The door lock device according to claim 4, wherein the second operation receiving portion of the release lever in contact with the release lever is displaced in an axial direction of the ratchet shaft. The mesh release mechanism includes a release lever arranged rotatably with respect to a lever arrangement part provided outside the latch case,
The release lever has an end portion that enters the latch case through an opening provided in the latch case, and extends to a position where the ratchet can be moved from the meshing position to the meshing release position.
The mesh release mechanism moves the ratchet from the mesh position to the mesh release position with the release lever when the first operation lever is operated, and directly engages the ratchet with the second operation lever when the second operation lever is operated. Move from the position to the mesh release position,
2. The door lock device according to claim 1, wherein the holding mechanism holds the release lever that has moved the ratchet to the mesh release position in that state.   The door lock device according to claim 6, wherein the second operation lever is integrated with the ratchet.   The door lock device according to claim 1, wherein the holding mechanism releases the holding of the ratchet at the mesh release position when the latch moves from the half latch position to the open position.   The door lock device according to claim 1, wherein the holding mechanism releases the holding of the ratchet at the mesh release position when the latch moves from the half latch position to the full latch position. The holding mechanism is a first holding lever that engages with the release lever to hold the ratchet at the mesh release position when the release lever moves the ratchet from the mesh position to the mesh release position;
The second holding lever that releases the engagement between the release lever and the first holding lever by operating the first holding lever when the latch reaches a predetermined position. The door lock device according to any one of claims 4 to 7.

Images