JP2007015624A - Door lock device for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door lock device for an automobile, preventing a cable from being pulled even when impact load caused by side collision is applied. <P>SOLUTION: The door lock device for the automobile is constituted at least by: a striker fixed to a vehicle body; a ratchet supported by a door and capable of being engaged with/separated from the striker; an inside handle 2 supported by a synthetic resin door trim arranged in an indoor side of the door and operable in the indoor side; and the cable connecting the inside panel 2 with the ratchet. The inside panel 2 is supported by a mounting member 12 which can be separated from the door trim by load applied to the cable and causing no separation of the ratchet from the striker. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an automobile door lock device.

Examples of the door lock device for an automobile include a striker fixed to a vehicle body, a latch supported by the door and capable of being engaged with and disengaged from the striker, and a synthetic resin door trim disposed on the indoor side of the door. The inside handle is supported and can be operated from the indoor side, and at least the cable is formed by connecting the inside handle and the latch. When the operating means of the inside handle is rotated from the indoor side, the cable is pulled and moved, and by rotating the latch, the latch is detached from the striker and the door can be opened (for example, Patent Document 1). ).
JP 11-11198655 A

  However, when an impact load due to a so-called side collision is applied to the side of a car equipped with such a car door lock device, there is a risk that the cable may be pulled by another car that bites into its own weight. The same phenomenon as when the operating means of the inside handle is rotated and the latch may be detached from the striker.

  The present invention has been made paying attention to such a conventional technique, and provides a vehicle door lock device in which a cable is not pulled even when an impact load due to a side collision is applied.

  The invention according to claim 1 is supported by a striker fixed to the vehicle body, a latch supported by the door and capable of being engaged with and disengaged from the striker, and a door trim made of a synthetic resin disposed on the indoor side of the door. In addition, in the automotive door lock device comprising at least an inside handle that can be operated from the indoor side and a cable that connects the inside handle and the latch, the inside handle is configured such that the latch does not separate from the striker. It is supported by a mounting member that can be detached from the door trim by a load applied to only the cable.

  According to a second aspect of the present invention, there is provided the automobile door lock device according to the first aspect, wherein the mounting member protrudes from a vehicle outer surface of the door trim and can support the inside handle. A boss formed with a surface and a fragile portion formed on a door trim at the base of the boss.

  The invention according to claim 3 is the door lock device for an automobile according to claim 1, wherein the mounting member is supported by a boss projecting from a vehicle outer surface of the door trim and attached to the cable. The housing comprises a housing supporting the connected operating means, and a support part protruding from the housing and fixed to the support surface of the boss, wherein a weak part is formed in the support part. And

  According to a fourth aspect of the present invention, in the automobile door lock device according to the first aspect, the mounting member protrudes from an outer surface of the door trim and the inside handle can be engaged and supported. A support member formed with a claw and a fragile portion, and a housing that supports the operation means connected to the cable and is engaged with the claw of the support member. It is characterized by.

  According to the first aspect of the present invention, since the attachment member of the inside handle is detached from the door trim due to a load applied to the cable that does not allow the latch to be detached from the striker, no tension is applied to the cable, and the latch is removed from the striker. It is possible to reliably prevent separation.

  According to the second aspect of the present invention, the boss-shaped mounting member that is provided so as to protrude from the vehicle exterior surface of the door trim and that has a surface that can support the inside handle is weak at the base of the mounting member. Since the portion is broken by the load applied to the cable that does not rotate the latch and is detached from the door trim, it is possible to reliably prevent the latch from being detached from the striker without applying tension to the cable.

  According to a third aspect of the present invention, the attachment member is supported by a boss projecting from the outer surface of the door trim and supports an operating means connected to the cable. And a support portion that protrudes from the inside handle and is fixed to the support surface of the boss, and the weak portion is formed in the support portion. Therefore, the weak portion of the support portion of the mounting member is latched. Since the cable is broken by a load applied to the cable that does not leave the striker and is released from the inside handle door trim, it is possible to reliably prevent the latch from being released from the strike without applying tension to the cable.

  According to the fourth aspect of the present invention, the mounting member that is provided with a claw protruding from the vehicle outer surface of the door trim and capable of engaging and supporting the inside handle and having a fragile portion is provided on the mounting member. The brittle part of the member breaks due to the load applied to the cable that the latch does not release from the striker and leaves the door trim, so that it is possible to reliably prevent the latch from being released from the striker without applying tension to the cable. become.

  The purpose of providing an automobile door lock device that does not pull the cable even when an impact load due to a side collision is applied is provided. A striker fixed to the vehicle body, and supported by the door and disengageable from the striker. At least a latch formed by a synthetic resin door trim disposed on the indoor side of the door and operable from the indoor side, and a cable connecting the inside handle and the latch. In the automotive door lock device, the inside handle is realized by being supported by a member that can be detached from the door trim by a load applied to the cable that does not allow the latch to be detached from the striker.

  A first embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view showing a state in which an inside handle 2 is provided on a door trim 1, FIG. 2 is a perspective view showing the inside handle 2 of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. FIG. 4 is an enlarged front view according to the arrow IV in FIG. 3, and FIG. 5 is a cross-sectional view for explaining the operation in which a boss and the like are detached from the state of FIG.

  An automobile door lock device 4 is disposed on the automobile door 3. The automobile door lock device 4 includes a latch 5 that can be engaged with and disengaged from a striker fixed to a center pillar and a pillar, which is a vehicle body (not shown), and a synthetic resin door trim 1 disposed on the indoor side of the door 3. The inside handle 2 is supported at the inside and can be operated from the indoor side, and the cable 6 is formed by connecting the inside handle 2 and the latch 5 to each other. In addition, the automobile door lock device 4 includes an anti-theft device and an electric lock means.

  The inside handle 2 is housed in the housing 7 by a housing 7 made of a synthetic resin such as POM that is immersed in a doorway (not shown) of the door 3 and a spring (not shown) that is rotatably supported in the housing 7 at all times. The lever 8 is an “operating means” that is biased, and support portions 9 and 9 that are disposed at the front and rear positions of the housing 7. A pilot hole 16, which will be described later, is formed in the support portion 9.

  The door trim 1 is composed of a synthetic resin core material 10 such as PPC, and a cloth 11 or a synthetic resin skin 11 such as polyvinyl chloride covering the interior side of the core material 10. On the outer surface of the core member 10, a boss 12 that is an “attachment member” is formed to project. The support portion 9 of the inside handle 2 abuts on the surface 12a of the free end portion of the boss 12, and the inside handle 2 is screwed by a screw 14 that is screwed into a prepared hole 12b formed in the surface 12a. The support part 9 is supported. The core material 10 of the door trim 1 around the base of the boss 12 has a lightening portion that is a “fragile portion” that can be detached from the core material 10 by a load applied to the cable 6 that does not allow the latch 5 to be detached from the striker. 13 is formed.

  As shown in FIG. 4, the lightening portion 13 includes a peripheral portion 13 a formed so as to surround three sides of the peripheral surface of the boss 12, an upper side 9 a, a lower side 9 b, and a free end of the support portion 9 of the housing 7. It comprises a cut portion 13b formed so as to be cut in a direction perpendicular to the side 9c.

  Ribs 15, 15, 15 that support the boss 12 are formed between the peripheral surface of the boss 12 and the cut portion 13 b of the lightening portion 13.

  As described above, the inside handle 2 according to this embodiment has the support portion 9 of the housing 7 of the inside handle 2 from the core 10 of the door trim 1 due to the load applied to the cable 6 so that the latch 5 is not detached from the striker. Since the base of the boss 12 supporting the detachment is removed as shown in FIG. 5, it is possible to reliably prevent the latch 5 from being detached from the striker without applying tension to the cable 6.

  The boss 12 formed by projecting from the vehicle outer surface of the core member 10 of the door trim 1 and having the surface 12a that can support the support portion 9 of the housing 7 of the inside handle 2 is formed at the base of the boss 12. When the other vehicle collides with the side surface of the own vehicle, the boss 12 is broken by the load applied to the cable 6 so that the latch 5 does not separate from the striker by the other vehicle that has bitten. Since it is difficult to detach from the core material 10 of the door trim 1, it is possible to reliably prevent the latch 5 from being detached from the striker without applying tension to the cable 6.

  A second embodiment of the present invention will be described with reference to FIG. The structural difference from the first embodiment is that the mounting member is formed on the support portion of the inside handle.

  The inside handle 20 includes a housing 21 made of synthetic resin such as POM that is immersed in an unillustrated opening of the door 3 (see FIG. 1), and a spring that is rotatably supported in the housing 21 and is not always illustrated. The lever 8 is an “operating means” urged into the housing 21 by the above-described structure, and the support portions 22 and 22 are “mounting members” disposed at the front and rear positions of the housing 21. A pilot hole similar to the pilot hole 16 is formed in the support portion 22.

  A support portion 2, which is an “attachment member” of the inside handle 20, is provided on a surface 12 a (see FIG. 3) of the free end portion of the boss 12 formed so as to protrude from the vehicle outer surface of the core member 10 of the door trim 1. 2 is abutted, and the support portion 22 of the inside handle 20 is supported by a screw 14 screwed into a prepared hole 12b (see FIG. 3) formed in the surface 12a. The support portions 22 and 22 are formed with slits 23 and 23 that are “fragile portions”.

  As described above, the inside handle 20 according to this embodiment is supported by the boss 12 of the core member 10 of the door trim 1 by a load applied to the cable 6 so that the latch 5 is not detached from the striker. Since the support portion 22 of the housing 21 is detached from the slit 23, it is possible to reliably prevent the latch 5 from being detached from the striker without applying tension to the cable 6.

  A third embodiment of the present invention will be described with reference to FIG. The structural point of connection with the first embodiment is that the mounting member is formed by a support portion that engages with the inside handle.

  The inside handle 25 includes a housing 26 made of a synthetic resin such as POM that is inserted in an opening (not shown) of the door 3 (see FIG. 1), and a spring (not shown) that is rotatably supported in the housing 26 and is always not shown. The lever 8 is an “operating means” urged inside the housing 26, and support portions 27, 27 arranged at the front and rear positions of the housing 26. A pilot hole 28 is formed in the support portion 27.

  As shown in FIG. 3, the door trim 1 is more layered with a core material 10 made of synthetic resin such as PPC and a cover 11 made of synthetic resin such as cloth or polyvinyl chloride covering the interior side of the core material 10. It is configured. A locking claw 29 that is an “attachment member” is formed to project from the outer surface of the core member 10. The latching claw 29 is a slit that is a “fragile portion” and is formed with a claw 30 that protrudes from the outer surface of the door trim 1 and that can be engaged and supported in the pilot hole 28 of the inside handle 25. 31 is formed so as to be surrounded around the locking claw 29.

  As described above, the inside handle 25 according to this embodiment has the inside handle 25 attached to the latching claw 29 of the core member 10 of the door trim 1 due to the load applied to the cable 6 so that the latch 5 is not detached from the striker. Since the pilot hole 28 of the support portion 27 of the housing 26 is supported and the locking claw 29 is broken by the slit 31, the housing 26 of the inside handle 25 is detached from the core material 10, so that no tension is applied to the cable 6. Thus, it is possible to reliably prevent the latch 5 from being detached from the striker.

  The operation means of the embodiment has been described using a lever, but is not limited to this, and may be a handle, a dial, or a switch.

The perspective view which shows the state which provided the inside handle in the door trim which concerns on 1st Example of this invention. The perspective view which shows the inside handle of FIG. Sectional drawing along the III-III line of FIG. The enlarged front view concerning arrow IV of FIG. FIG. 4 is an operation explanatory cross-sectional view showing a state in which a boss or the like is detached from the state of FIG. 3. FIG. 2 is a perspective view corresponding to FIG. 2 according to a second embodiment of the present invention. FIG. 2 is a perspective view corresponding to FIG. 2 according to a third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door trim 2,20,25 Inside handle 3 Door 4 Automotive door lock device 5 Latch 6 Cable 7, 21, 26 Housing 8 Lever (operating means)
9, 27 Supporting part 10 Core material 12 Boss (mounting member)
12a surface 12b, 28 pilot hole 13 cutout hole (fragile part)
22 Supporting part (mounting member)
23, 31 Slit (fragile part)
29 Locking claw (supporting member)
30 nails

Claims (4)

A striker that is fixed to the vehicle body, a latch that is supported by the door and that can be engaged with and disengaged from the striker, and an inside that is supported by a synthetic resin door trim disposed on the indoor side of the door and that can be operated from the indoor side. In an automotive door lock device comprising at least a handle and a cable formed by connecting the inside handle and the latch,
The automobile door lock device according to claim 1, wherein the inside handle is supported by a mounting member that can be detached from the door trim by a load applied to the cable that does not allow the latch to be detached from the striker. The automobile door lock device according to claim 1,
The mounting member includes a boss formed by projecting from a surface of the door trim on the vehicle outer side and a surface capable of supporting the inside handle, and a weakened portion formed on the door trim at the base of the boss. A door lock device for an automobile characterized by being configured. The automobile door lock device according to claim 1,
The mounting member is supported by a boss projecting from the outer surface of the door trim, and supports an operating means connected to the cable. The mounting member projects from the inside handle and the boss. An automobile door lock device comprising: a support portion fixed to a support surface of the vehicle; and a weak portion formed in the support portion. The automobile door lock device according to claim 1,
The mounting member is connected to the cable and a support member that is formed from a vehicle outer surface of the door trim and is formed with a claw capable of engaging and supporting the inside handle and having a fragile portion. An automobile door lock device comprising: a housing that supports the operating means and is engaged with a claw of the support member.

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