JP5064199B2 - Car door lock device - Google Patents

Description

  The present invention relates to an automobile door lock device configured to move an open lever of a door lock in a unlocking direction via a link by opening a door handle.

In a door lock device for an automobile, a structure for preventing the door from being opened in the event of a vehicle collision is employed. For example, in Patent Document 1, when a collision occurs from the rear of the vehicle, the opening operation rod is brought into contact with the open operation rod that connects the open handle of the back door and the latch mechanism from the rear to the front. A structure in which the rod is removed from the latch mechanism has been proposed.
JP 2005-330689 A

  By the way, in the conventional door lock device, in order to prevent the contact member from being deformed by an input at the time of collision, the corresponding contact member has a structure in which a plurality of sheet metal members are joined by welding or the like. There is a problem that the cost increases as the number increases.

  The present invention has been made in view of the above-described conventional situation, and the structure completely different from the conventional structure can prevent the door from being opened in the event of a vehicle collision, and can increase the weight of components and the cost. It is an object to provide an automobile door lock device that can be suppressed.

The present invention relates to a door handle disposed on a door, a door lock disposed below the door handle to lock the door to a vehicle body, an open lever for unlocking the door lock, and the open lever A door lock device for an automobile comprising a link that connects the door handle to the door handle and moves the open lever in the unlocking direction by opening the door handle,
When the door lock moves relative to the door handle relative to the door handle in the event of a vehicle collision, the link has a turning radius that makes contact with the middle part of the link in the vertical direction and the corresponding contact portion serves as a fulcrum. A restricting member for bending and rotating the link in the moving direction so as to be smaller than a rotation radius of the link having a connecting portion with a handle as a fulcrum is provided.

  According to the door lock device of the present invention, in the event of a vehicle collision, the restricting member is brought into contact with the middle part in the vertical direction of the link, and the link is rotated in the moving direction of the door lock with the contact portion with the restricting member as a fulcrum. Since the turning radius of the link is smaller than the turning radius with the connecting part with the door handle as a fulcrum, the link turns with the open lever held in the locked position, and the door Can be prevented from opening.

  Further, the restricting member only needs to have a simple structure in which the rotation fulcrum of the link is changed when the link comes into contact with each other. Increase in cost can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 to FIG. 6 are views for explaining a door lock device for an automobile according to an embodiment of the present invention. FIG. 1 is a side view of the automobile provided with the door lock device, and FIG. 3 is a side view of the door lock device as viewed from the inside of the room, FIG. 4 is a rear view of the door lock device as viewed from the rear of the vehicle, FIG. 5 is a cross-sectional view taken along line VV in FIG. It is a perspective view of a member.

  In the figure, reference numeral 1 denotes a rear door that opens and closes a rear door opening 2a formed in a vehicle body side portion 2 of the automobile. The rear door opening 2a is formed by a center pillar 3 that forms a front edge portion thereof and a rear pillar 8 that forms a rear edge portion thereof.

  The rear door 1 is rotatably supported by a pair of upper and lower door hinges 4 and 4 attached to the center pillar 3. In addition, 5 is a front door and 6 is a back door.

  The rear door 1 includes a hollow door body 13 in which a window opening 13a is formed, a door glass 14 that opens and closes the window opening 13a, and a door sash 15 that supports the door glass 14 so as to be movable up and down. The door sash 15 is disposed along the edge of the window opening 13 a of the door body 13 and is attached to the door body 13.

  The rear door 1 is provided with a door lock device 7. The door lock device 7 is disposed in a door handle 1a disposed on an outer panel of the door main body 13, and in the door main body 13 and in the vicinity of the lower side of the door handle 1a. A door lock 9 to be locked to the rear pillar 8 of the portion 2, an open lever 10 to unlock the door lock 9, the open lever 10 and the door handle 1a are connected, and the door handle 1a is opened to open the door lock 1a. And a link 11 for moving the open lever 10 in the unlocking direction.

  The door lock 9 is configured to engage with a substantially U-shaped striker 12 fixed to the rear pillar 8 when the rear door 1 is closed to lock the rear door 1 in a fully closed position.

  The open lever 10 is supported by the door lock 9 via a pin 16 so as to be swingable in the vertical direction, and is always biased toward the lock position A by a spring member 17 (see FIG. 4).

  The link 11 is formed by bending a bar material into a substantially crank shape having an upper vertical side portion 11e, a horizontal side portion 11f, and a lower vertical side portion 11g, and is arranged so as to extend in the vertical direction as a whole. Has been. The upper end portion 11a of the link 11 is connected to a rotating member 15 disposed on the door handle 1a, and the lateral side portion 11d of the lower end portion 11b bent in a generally crank shape is in contact with the upper surface of the open lever 10. .

  When the opening operation of pulling the door handle 1a by hand from the outside of the vehicle is performed, the link 11 moves downward as the upper end portion 11a rotates downward about the rotating shaft 15a of the rotating member 15, and opens. The lever 10 is rotated downward about the pin 16. When the open lever 10 rotates to the unlock position B, the engagement of the door lock 9 with the striker 12 is released. Thereby, the rear door 1 can be opened. When the hand is released from the door handle 1a, the open lever 10 returns to the lock position A by the spring member 17.

  The link 11 is disposed so as to generally face the rear surface 15a of the door sash 15. A regulating member 20 is disposed on the rear surface 15a of the door sash 15. The restricting member 20 is disposed so as to face the upper portion of the lower vertical side portion 11g of the link 11.

  When the door lock 9 moves forward relative to the door handle 1a at the time of a vehicle collision, the restricting member 20 comes into contact with the upper portion of the lower vertical side portion 11g, which is the middle portion of the link 11 in the vertical direction. The link 11 is rotated in the moving direction of the door lock 9 with the contact portion 11c as a fulcrum. In this case, the movement of the portion above the contact portion 11 c of the link 11 is suppressed by the restriction member 20.

  The restricting member 20 is formed by press-molding a band plate, and is fixed to the rear surface 15a of the door sash 15. The upper and lower flange portions 20a and 20a and the upper and lower flange portions 20a A substantially V-shaped pointed portion 20b that protrudes rearward so as to be close to the upper portion of the vertical side portion 11g of the link 11, and an engaging recess 20c that is formed at the tip end portion of the pointed portion 20b and engages with the link 11. Have. When the link 11 is engaged with the engaging recess 20c at the time of a vehicle collision, the link 11 is prevented from moving from the regulating member 20 by moving in the vehicle width direction.

  When a load is applied from behind due to a vehicle collision, the door lock 9 moves forward, and the link 11 moves accordingly, and the upper portion of the lower vertical side portion 11g abuts against the regulating member 20. When the door lock 9 moves further forward in a state where the lower vertical side portion 11g is in contact with the restriction member 20, the lower portion of the link 11 is bent with the contact portion 11c with the restriction member 20 as a fulcrum. Rotate forward. Since the rotation locus a of the connecting portion 11d 'with the open lever 10 using the contact portion 11c of the link 11 as a fulcrum is held at the lock position A without passing through the lock release position B, the open lever 10 It is not rotated to the unlock position B.

  Here, when there is no regulating member 20, the link 11 pivots about the pivot member 15 of the door handle 1a at the time of a collision, so that the pivot locus b of the connecting portion 11d 'passes through the lock release position B. Thus, the open lever 10 may be pushed down and the lock may be released.

  The restricting member 20 is provided in order to prevent the rotation locus a of the connecting portion 11d ′ of the link 11 with the open lever 10 from falling down to the lock release position B in the event of a vehicle collision. For this purpose, the restricting member 20 is positioned so that the contact portion 11c is positioned closer to the load input side (right side than the straight line C in FIG. 3) than the straight line C connecting the connecting portion 11d 'and the upper end portion 11a of the link 11. Need to be placed. Furthermore, it is necessary to arrange the regulating member 20 so that the abutting portion 11c is positioned on the anti-load input side (the left side of the lower vertical side portion 11g in FIG. 3) of the lower vertical side portion 11g.

  As described above, according to the present embodiment, the restriction member 20 is disposed so as to face the upper portion of the vertical side portion 11g of the link 11, and the restriction member 20 is brought into contact with the contact portion 11c of the link 11 at the time of a vehicle collision. As a result, the link 11 is rotated in the moving direction of the door lock 9 with the contact portion 11c as a fulcrum, so that the radius of the rotation trajectory a of the link 11 is based on the rotation member 15 of the door handle 1a. It becomes smaller than the radius of the rotation trajectory b. Therefore, the link 11 is rotated in a state where the open lever 10 is held at the lock position A, and the rear door 1 can be prevented from opening at the time of a collision.

  In this embodiment, the restricting member 20 may be a simple V-shaped structure that only changes the pivot fulcrum of the link 11 by contacting the link 11, and a plurality of conventional sheet metal members are formed in a cylindrical shape. Compared with the case of forming, an increase in component weight and an increase in cost can be suppressed.

  In the above-described embodiment, the regulating member 20 is attached to the door sash 15 positioned in front of the link 11. However, in the present invention, as shown by a two-dot chain line in FIG. It may be attached to the door main body behind the link 11 and disposed so as to surround the link 11 from the front. In this case as well, substantially the same effect as in the above embodiment can be obtained.

1 is a side view of an automobile provided with a door lock device according to an embodiment of the present invention. It is a disassembled perspective view of the said door lock apparatus. It is a side view of the door lock device. It is a rear view of the door lock device. It is a cross-sectional top view (VV sectional view taken on the line of FIG. 3) of the control member of the door lock device. It is a perspective view of the said restriction member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rear door 1a Door handle 2 Car body side part 7 Door lock apparatus 9 Door lock 10 Open lever 11 Link 11c Midway part in the up-down direction, contact part 20, 21 Restriction member

Claims (1)

A door handle disposed on the door; a door lock disposed below the door handle for locking the door to the vehicle body; an open lever for unlocking the door lock; the open lever and the door handle And a door lock device for an automobile provided with a link that moves the open lever in the unlocking direction by opening the door handle,
When the door lock moves relative to the door handle relative to the door handle in the event of a vehicle collision, the link has a turning radius that makes contact with the middle part of the link in the vertical direction and the corresponding contact portion serves as a fulcrum. An automobile door lock device comprising a restricting member that bends and turns the link 11 in the moving direction so as to be smaller than a turning radius of the link having a connecting portion with a handle as a fulcrum .

Images