JP2010144337A - Door lock device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door lock device for a vehicle which enables a striker to be disengaged at a short operation distance. <P>SOLUTION: The door lock device 1 for the vehicle includes: a striker 10 which is provided at the side of a vehicle body B; a latch mechanism 2 which is provided at the side of a door D and engaged with the striker 10 in the closing of the door; and an open lever 3 which is linked to an inside handle provided in a vehicle interior, acts on the latch mechanism 2 by operating the inside handle in the closing of the door, and disengages the latch mechanism 2 from the striker 10. The open lever 3 has an abutting piece 32 which is journaled to an abutting piece shaft 32c. When the abutting piece 32 is in a receding state in the non-operated state of the inside handle, a point of action exerted on the latch mechanism 2 of the open lever 3 is positioned out of the range E of the movement of the latch mechanism 2 accompanied by the opening/closing of the door. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle door lock device, and more particularly to a vehicle door lock device including a mechanism for releasing the engagement of a latch mechanism with respect to a striker by operating an inside handle provided in a vehicle compartment when the door is closed.

  Conventionally, as shown in FIG. 5, a vehicle door lock device 101 includes a striker 10 provided on the vehicle body B side, and a latch mechanism 2 provided on the door D side and engaged with the striker 10 when the door D is closed. The latch mechanism 2 is engaged with the striker 10 when the door D is closed, and when the door D is opened, the latch mechanism 2 is disengaged by a handle operation and the door D can be opened. it can. Such conventional vehicle door lock structures are disclosed in Patent Documents 1 to 3.

  In such a conventional vehicle door lock device, naturally, the latch mechanism is disengaged by operating a handle provided outside the door D. In addition to this, in particular, the lock structure of the back door D is provided. Then, an inside handle provided in the vehicle interior, and a lever that is connected to the inside handle and operates on the latch mechanism by operating the inside handle when the door is closed, are operated by operating the inside handle from the vehicle interior. For example, a configuration is known in which the engagement of the latch mechanism of the back door can be released from the driver's seat.

  For example, as shown in FIG. 6, a conventional door lock device 101 includes a striker 10 provided on the vehicle body B side, a latch mechanism 2 provided on the door D side and engaged with the striker 10 when the door D is closed, An open lever 103 that is connected to an inside handle (not shown) provided on the latch mechanism 2 and operates on the latch mechanism 2 by operating the inside handle when the door is closed, and releases the engagement of the latch mechanism 2 with the striker 10. I have.

  The latch mechanism 2 includes a latch 22 and a detent lever 21, which are pivotally supported on the door D by a latch shaft 22b and a detent lever shaft 21b, respectively. The latch 22 is urged in the direction indicated by an arrow H by an elastic member (not shown), and the detent lever 21 is urged in the direction indicated by an arrow G by an elastic member (not shown). Now, the detent lever 21 is engaged with the first step portion 22 d of the latch 22.

  When the door D is closed, the latch mechanism 2 moves in the direction of the arrow J along with the door D, and the striker 10 comes into contact with the periphery of the second step portion 22a of the latch 22 and pushes up the contact point relatively upward. . Then, the latch 22 rotates about the latch shaft 22b in the direction opposite to the arrow H, and receives the striker 10 in the receiving portion 22c. In this state, the engaging portion 21 c of the detent lever 21 is engaged with the second step portion 22 a of the latch 22. In this way, the latch mechanism 2 holds the striker 10.

On the other hand, on the vehicle body B side, an open lever 103 for releasing the engagement of the latch mechanism 2 from the driver's seat is provided. The open lever 103 is pivotally supported on the striker base 152 via an open lever shaft 133 and is urged by a tension spring 134. The ball 144 of the operating cable 104 is locked to the end 131b opposite to the locking point 131a of the tension spring 134. The operating cable 104 is configured such that the cable 143 is slidably inserted through the tube 141, and the end 142 of the tube is fixed to a part 151 of the striker base. The cable 143 is connected to an inside handle provided in the driver's seat or the like. When the inside handle operation is performed, the ball 144 is pulled, so that the open lever 103 rotates in the direction of arrow M, the action part 131c acts on the detent lever 21, and the engagement between the detent lever 21 and the latch 22 is released. The engagement between the latch mechanism 2 and the striker 10 is released.
JP 2006-125024 A Japanese Patent Laid-Open No. 9-13767 JP 2005-34415 A

  However, in such a conventional door lock device, it is necessary to prevent the detent lever 21 and the open lever 103 from interfering with each other when closing the door. For this reason, there is a gap between the locus of the detent lever 21 and the open lever 103. It is necessary to provide S5. As a result, a gap S4 is generated between the detent lever 21 and the open lever 103 when the door is closed, and the door lock cannot be released unless the inside handle is operated beyond this gap S4. If the door D is closed while the inside handle is being operated, the open lever 103 may hit the detent lever 21 and the open lever 103 or the detent lever 21 may be deformed.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle door lock device that can release the engagement of a striker with a smaller operation distance.

  To achieve the above object, a vehicle door lock device according to the present invention includes a striker provided on the vehicle body side, a latch mechanism provided on the door side and engaged with the striker when the door is closed, and an inside provided in the vehicle interior. An open lever that is linked to the handle and operates the inside handle when the door is closed to act on the latch mechanism to disengage the latch mechanism from the striker. The open lever or the latch mechanism has a retracting structure, and the inside handle When the retracting structure is in the retracted state without operating the lever, the operating point of the open lever with respect to the latch mechanism is located outside the range of movement of the latch mechanism that accompanies the opening and closing of the door.

  Further, when the retracting structure is in the normal state when the inside handle is not operated, the operating point of the open lever with respect to the latch mechanism may be positioned within the movement range of the latch mechanism that accompanies opening and closing of the door.

  When the retracting structure is in the retracted state while the inside handle is being operated, it is desirable that the operating point of the open lever with respect to the latch mechanism is located outside the range of movement of the latch that accompanies the opening and closing of the door.

  The retraction structure includes, for example, a contact piece that is pivotally supported on the base of the open lever and acts on the latch mechanism, and an elastic member that urges the contact piece upward. In this case, for example, the base of the open lever has an end on which the contact piece is pivotally attached and an end to which an operation from the inside handle is transmitted, and is biased in a direction against the operation from the inside handle. It is pivotally supported by the vehicle.

  According to the vehicle door lock device of the present invention, the retracting structure provided in the open lever or the latch mechanism avoids deformation of the open lever or the latch mechanism in the retracted state of the open lever, and in the normal state of the retracted structure. Since the action point can be brought close to the latch mechanism, the engagement of the latch mechanism can be released with a small operation.

  When the inside handle is in operation and the retracting structure is in the retracted state, when the operating point for the latch mechanism in the open lever is located outside the range of movement of the latch when the door is opened and closed Even if the door D is closed while the inside handle is operated, the retracting structure is in the retracted state, so that the operating point of the open lever with respect to the latch mechanism is located outside the range of movement of the latch mechanism associated with the opening and closing of the door. Even when the open lever and the latch mechanism interfere with each other, they are not deformed.

  If the retracting structure is composed of a contact piece that is pivotally supported by the base of the open lever and acts on the latch mechanism and an elastic member that urges the contact piece upward, only the change of the open lever is required, and the cost is reduced. The effects of the present invention can be achieved while suppressing the above.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. About the point similar to a prior art example, the same code | symbol is attached | subjected and description is abbreviate | omitted suitably. 1 to 4 are views showing a vehicle door lock device according to an embodiment of the present invention.

  As shown in FIG. 5, the vehicle door lock device 1 includes a striker 10 provided on the vehicle body B side and a latch mechanism 2 provided on the door D side and engaged with the striker 10 when the door D is closed. When the door D is closed, the latch mechanism 2 is engaged with the striker 10, and when the door D is opened, the latch mechanism 2 is disengaged by operating the handle and the door D is opened. be able to. The same latch mechanism 2 and striker 10 can be used, and these are engaged by the same mechanism as before.

  On the other hand, on the vehicle body B side, an open lever 3 for releasing the engagement of the latch mechanism 2 from the driver's seat is provided. As shown in FIGS. 1 and 2, the open lever 3 includes a trident base 31, a contact piece 32 that is pivotally supported by the base 31 and acts on the latch mechanism 2, and the contact piece 32 is attached upward. And a torsion spring 32d (see FIG. 2) which is an elastic member.

  As shown in FIGS. 2 and 3, the base 31 is supported by an extension 51 extending from the striker base 5 via an open lever shaft 33, and is operated from an inside handle (not shown) by a tension spring 34. It is urged in the direction to resist. A ball 44 of the operating cable 4 is locked to an end 31b of the tension spring 34 opposite to the locking portion 31a. The operating cable 4 is configured such that the cable 43 is slidably inserted through the tube 41, and the end 42 of the tube is fixed to a flange 51 a provided on the extension 51 of the striker base 5. The cable 43 is connected to an inside handle provided in the driver's seat or the like.

  Unlike the conventional door lock device, the base 31 has a retracting structure including a contact piece 32 and a torsion spring 32d. A contact piece 32 is pivotally supported at one end 31c of the base 31 via a contact piece shaft 32c. The free end 32 b of the contact piece 32 is a portion that contacts the detent lever 21. The contact piece 32 is urged by the torsion spring 32d in the latch entry direction, that is, in the direction of the arrow P. On the other hand, the rotation of the contact piece 32 in the direction of the arrow P is limited by the protruding piece 32e.

  In this embodiment, the retracting structure is in the normal state in both the state where the inside handle is not operated as shown in FIG. 1A and the state where the inside handle is operated as shown in FIG. 1, the contact piece 32 is located within the movement range of the latch mechanism 2 accompanying opening and closing of the door, that is, on the right side of the one-dot chain line E in FIG. 1. It is located outside the range of movement of the latch mechanism 2 accompanying opening and closing of the door, that is, on the left side of the alternate long and short dash line E in FIG. This will be described in detail below.

  With the door closing operation, the latch mechanism 2 moves as indicated by an arrow J in FIG. The locus drawn by the tip of the action portion 21a of the detent lever 21 is on the one-dot chain line E in FIG. The contact piece 32 is in the position of the contact piece 32 drawn by a solid line in FIG. 1 in the normal state, and rotates to the position of the contact piece 32 drawn by a two-dot chain line in FIG. 1 in the retracted state. .

  When the door is closed, the latch mechanism 2 moves as indicated by an arrow J in FIG. 1A, so that the tip of the action portion 21a of the detent lever 21 moves on the alternate long and short dash line E, as shown in FIG. It abuts against the abutment piece 32 in a normal state indicated by a solid line. When the latch mechanism 2 is further lowered, the action portion 21a of the detent lever 21 pushes the contact piece 32, and the contact piece 32 moves to a retracted position indicated by a two-dot chain line. When the latch mechanism 2 is further lowered, the contact piece 32 returns to the normal state by the biasing force of the torsion spring 32d.

  When the inside handle is operated in the door closed state shown in FIG. 1 (a), the ball 44 is pulled by the cable 43, so that the open lever 3 rotates in the direction of arrow M, as shown in FIG. 1 (b). The abutment piece 32 acts on the detent lever 21, and the detent lever 21 rotates in the direction of arrow N to release the engagement between the detent lever 21 and the latch 22. When the door moves upward, the latch 22 rotates in the direction of the arrow H in accordance with the bias, and the engagement between the latch mechanism 2 and the striker 10 is released.

  As described above, when the inside handle shown in FIG. 1A is not operated, when the retracting structure is in the normal state, that is, when the contact piece 32 is at the position indicated by the solid line, the tip 32b of the contact piece 32 is provided. However, the contact piece 32 is overlapped with the movement range of the latch mechanism 2 by S1. On the other hand, when the retracting structure is in the retracted state, the contact piece 32 is located outside the movement range of the latch mechanism 2 when the door is opened and closed. Since the piece 32 is retracted, the latch mechanism 2 or the open lever 3 is not deformed.

  Further, even when the inside handle shown in FIG. 1B is operated, when the retracting structure is in the normal state, that is, when the contact piece 32 is at the position indicated by the solid line, the tip 32b of the contact piece 32 is The contact piece 32 is located within the movement range of the latch mechanism 2 when the door is opened and closed, and overlaps the movement range of the latch mechanism 2 by S3. Even in this state, if the retracting structure moves to the retracted state, the abutting piece 32 moves outside the range of movement of the latch mechanism 2 that accompanies the opening and closing of the door, that is, to the left of the one-dot chain line E in FIG. When the door closing operation is performed while operating the lever, even if the latch mechanism 2 comes into contact with the open lever 3, the contact piece 32 retracts, so that the latch mechanism 2 or the open lever 3 may be deformed. Absent.

  Further, in the door lock device 1 of the present embodiment, the contact piece 32 can be positioned within the movement range of the latch mechanism 2 when the door is opened and closed even when the inside handle is not operated. Therefore, compared to the conventional door lock device, the gap S2 between the latch mechanism 2 and the open lever 3 in the door closed state can be reduced, so that the play of the open lever 3 can be reduced and the operation distance can be reduced. The striker can be disengaged.

  Generally, in the door lock device, in order to reduce the operating distance of the inside handle, the moving direction of the operating point of the open lever is the same as the moving direction of the force point in the detent lever in the contact state between the open lever and the detent lever. It is preferable that Further, in order to suppress the force required for operating the inside handle to a certain extent, the distance between the operating point of the open lever and the open lever shaft is required to some extent.

  In order to satisfy the above requirements, in the conventional door lock device 101 as shown in FIGS. 6 and 7, the open lever 103 needs to be offset with respect to the striker 10 inside the vehicle body, that is, downward in FIG. 6. There is. In order to secure the arrangement position of the open lever 103, the cargo compartment wall 107 is offset from the inner surface of the back door D by an interval S7 as shown in FIG. 4B as a T1-T1 sectional view of FIG. Must be provided.

  On the other hand, in the door lock device 1 of the present embodiment, the open lever 3 is separated from the inner surface of the back door D with the inner wall 7 as shown in FIG. 4A as a sectional view taken along line T2-T2. It suffices to provide an offset by S6, and it is possible to set the cargo compartment volume larger than in the conventional case.

  As described above, the vehicle door lock device according to the present invention includes a striker provided on the vehicle body side, a latch mechanism provided on the door side and engaged with the striker when the door is closed, and an inside handle provided in the vehicle interior. And an open lever that acts on the latch mechanism by operating the inside handle when the door is closed to release the engagement of the latch mechanism with the striker, and the open lever or the latch mechanism has a retracting structure, and the inside handle When the retracting structure is in the retracted state without operating the lever, the operating point of the open lever with respect to the latch mechanism is located outside the range of movement of the latch mechanism that accompanies the opening and closing of the door, and does not deviate from the main point It can be implemented in various forms. For example, in the description of the embodiment, only the structure in which the open lever has the retracting structure has been described, but the latch mechanism may have the retracting structure. In that case, although the illustration of the retracting structure is omitted, the retracting structure of the embodiment and the form of rotation target are used. That is, it is only necessary to include a contact piece that is pivotally supported by the detent lever of the latch mechanism and receives an action from the open lever, and an elastic member that urges the contact piece toward the entry destination of the latch. Further, the design is not limited to the dimensions and materials of the embodiment, and appropriate design changes can be made.

It is a top view which shows the vehicle door lock device of embodiment of this invention, (a) is the state which is not operating the inside handle, (b) shows the state which is operating the inside handle. It is a disassembled perspective view which shows a part of FIG. It is a perspective view which shows a part of FIG. It is a schematic sectional drawing for comparing the embodiment and the door lock device of a prior art example, (a) is T2-T2 sectional drawing of FIG. 1, (b) is T1-T1 sectional drawing of FIG. It is a figure which shows the attachment position of a door lock apparatus. It is a top view which shows the conventional door lock apparatus. It is a disassembled perspective view which shows a part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door lock apparatus 2 Latch mechanism 21 Detent lever 21a Action part 21b Detent lever shaft 21c Engagement part 22 Latch 22a Second step part 22b Latch shaft 22c Reception part 22d First step part 3 Open lever 31 Base part 31a Locking part 32 Contact piece 32c Contact piece shaft 32e Projection piece 33 Open lever shaft 4 Operating cable 41 Tube 42 End portion 43 Cable 44 Ball 5 Striker base 51 Extension portion 51a Flange 7 Cargo compartment wall 10 Striker B Car body D Door

Claims (5)

A striker provided on the vehicle body side,
A latch mechanism provided on the door side and engaged with the striker when the door is closed;
An open lever that is linked to an inside handle provided in the vehicle interior and operates on the latch mechanism by operating the inside handle when the door is closed to release the engagement of the latch mechanism with the striker;
The open lever or the latch mechanism has a retracting structure,
When the retracting structure is in the retracted state without operating the inside handle, the operating point of the open lever with respect to the latch mechanism is positioned outside the range of movement of the latch mechanism that accompanies door opening and closing. Vehicle door lock device.   In a state where the inside handle is not operated, when the retracting structure is in a normal state, an action point of the open lever with respect to the latch mechanism is positioned within a movement range of the latch mechanism accompanying opening and closing of the door. The vehicle door lock device according to claim 1.   The operating point of the open lever with respect to the latch mechanism is positioned outside the range of movement of the latch when the door is opened and closed when the retracting structure is in the retracted state while the inside handle is being operated. Item 3. The vehicle door lock device according to Item 1 or 2.   The retraction structure includes a contact piece that is pivotally supported by a base portion of the open lever and acts on the latch mechanism, and an elastic member that urges the contact piece in a direction toward which the latch enters. The vehicle door lock device according to any one of the above.   The base of the open lever has an end on which the contact piece is pivotally mounted and an end to which an operation from the inside handle is transmitted, and is biased in a direction against the operation from the inside handle. The vehicle door lock device according to claim 4, which is pivotally supported by the vehicle.