JPS5938475A - Door lock apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a door lock device for an automobile, and in particular, to a device that makes it difficult for the lock striker to be pulled out from the locked position when a load is applied in the direction of opening the door at the bar float position. . - Conventionally, in a car door lock device, as shown in Figs. 1 to 3, when the door is operated in the closing direction, the groove 1 cut out in the cover plate 1 of the door is
A striker 2 protruding from the vehicle body is inserted into a, and the U of the latch member 3 is rotatably supported by the striker 2 on the door side.
When the latch member 3 is rotated into the groove 3a and the latch member 3 is rotated to the half position, one of the two locking portions 3b and 3c formed on the latch member 3 engages with the groove 3a. A locking member 4, which is biased by a spring toward the door side and rotatably supported, engages with the locking portion 3b, thereby disabling return rotation of the latch member 3 and holding the striker 2 in the bar-frozen position shown in the figure. I have to. Further, when the door is closed and the striker 2 is inserted into the groove la, the latch member 3 is rotated to the full position, and the lock member 4 is engaged with the locking portion 3C to hold the striker 2 at the full lock position. That's what I do.

In the door lock device having the above structure, the latch member 3 is made of a metal material in order to have strength, and in the half-lock position, 'tR3a of the latch member 3 is in the state shown in the figure, and the groove 3a is in the state shown in the figure. The direction is approximately perpendicular to the groove 1a of the cover plate 1, and since the side 3d on the entrance side of the groove 3a is inclined to facilitate engagement with the striker, the direction in which the door opens is ( That is, when a load is applied to the striker 2 (in the pulling direction), the striker 2 moves on the wall surface of the groove 3a of the latch member 3 and comes into contact with the wall surface of the groove 1a of the cover plate 1, and when a stronger load is applied, 136% of the standard in strength tests
In some cases, the cover plate 1 was pushed and bent under such a load that the striker 2 came off.

Therefore, it is necessary to increase the strength of the cover plate 1, and the plate thickness and the dimension from the tip to the side edge of the groove 1a are restricted to more than a predetermined value, which has the disadvantage of increasing the weight and size of the cover plate 1. there were.

This invention aims to solve the above-mentioned drawbacks. In order to prevent the striker from coming out at the half-lock position, a convex portion is formed at the entrance on the striker holding side of the groove of the latch member, and a convex portion is formed on the wall of the liquid groove. An elastic resin material is attached along the groove wall to prevent the striker from moving along the groove wall, and the latch member securely holds the striker to improve safety and reduce the load applied to the cover plate. The present invention provides a door rotor device for an automobile, characterized in that the cover plate can be made thinner and smaller.

Hereinafter, this invention will be explained in detail with reference to the embodiments shown in FIG. 4 and below.

10 is the base on the door side, 11 is the mounting screw 1 on the base 10
2 is the cover plate attached, 13 is a latch member rotatably supported on the base 10 by a support shaft 14, and 15 is the base 1.
This is a locking member rotatably supported on the shaft 16 by a spring (not shown) in the direction of the arrow in the figure, and restricted by a stop rubber 17. 18 is a striker protruding from the vehicle body side.

The cover plate 11 has a horizontal groove 11 extending from one side end.
It is formed by notching a, and its side end opening 11b is inclined to widen in the middle.

The latch member 13 has a fork shape, and has a U-shaped groove 13.
A is cut out, and a protrusion 13b protruding inward is formed on the striker holding side of the entrance of the liquid groove 13a. On the opposite side of the convex portion 13b, a first locking portion 13C is formed which is continuous with the groove 13a and tapered outward, and a concave portion is formed on the side a predetermined distance ahead of the first locking portion 13C. A second locking portion 13d is formed with a cutout. The above U-shaped groove 13a
An elastic resin material 20 is attached along the wall surface. The elastic resin material 20 is attached from the inner side of the groove at the tip of the convex portion 13b with a medium thickness so as to be at the same height as the tip, and is attached to the wall surface of the groove 13a as a whole (including the elastic resin material 20). ) There are no irregularities as a whole from the entrance side. Note that the elastic resin material is not attached to the first locking portion 13C that is continuous with the groove 13a.

As mentioned above, in the groove 13a that engages the striker 18,
By forming the convex portion 13b on the striker inlet side and attaching the elastic resin material 20 along the groove wall surface,
When the door is closed from the door open position shown in FIG.
As shown in the figure, the striker 18 is inserted into the groove 11a of the cover plate 11, engages with the groove 13a of the latch member 13, rotates the latch member 13 counterclockwise, and locks the lock member 15 into the second locking portion 13d. The convex portion 15a is locked, resulting in a half-locked state. The striker 18 is the latch member 1
When engaging the groove 13a of No. 3, the tip of the convex portion 13b and the surface of the elastic resin material 20 are at the same height and there are no irregularities, so the striker 18 fits into the groove 13a without resistance, and the striker 18 moves inside the groove 13a. Since it comes into contact with the elastic resin material 20 when it moves, there is little generation of abnormal noise.

When the door is in the half-locked position and force is applied in the opening direction and the striker 18 attempts to move in the direction of removal from the groove 13a, the elastic resin material 2 in contact with the striker 18
0 is recessed into the entrance part of the groove to prevent the movement of the striker 18, and even if a stronger force is applied and the striker 18 moves toward the entrance side of the groove 13a, it is stopped by the protrusion 13b. Thus, the striker 18 does not shift downward. Therefore, the striker 18 and the latch member 13 are not disengaged from each other. Therefore, the striker 18
3a and move along the groove 11a of the cover plate 11, thereby preventing a strong load from being applied to the cover plate 11.

In the strength test results, there was no case where the striker 2 came off when the cover plate 11 was pushed and bent, and the striker 2 did not come off as the standard 261.
%, the latch member cracked.

When the door is further closed from the half-locked position, the striker 18 enters the groove 11a, rotates the latch member 13, and engages the convex portion 15a of the lock member 15 in the first locking portion 13C.
is locked, resulting in the fully locked state shown in FIG.

Note that the present invention is not limited to the above-mentioned embodiment, and the lock member sliding surface between the seventh and second locking portions 13d and the second locking portion 1
Elastic resin material 20a is also provided on the outside of 3d.

20b may be attached to suppress the generation of abnormal noise when the door is locked. Furthermore, as shown in FIG. 8, if the groove 13a formed in the latch member 13 is formed with a slight inclination in the direction opposite to the striker insertion side, the striker 18 will be more difficult to slip out than the liquid groove 13a.

As is clear from the above description, according to the door lock device according to the present invention, the groove of the latch member that engages with the striker is formed with a convex portion on the striker holding side, and an elastic resin material is formed along the wall surface of the groove. Since the striker is installed in the half-locked position, it is reliably prevented from coming out of the groove of the latch member, and the lock does not come off, improving safety. In addition, since the striker does not come out of the groove of the latch member and press the groove of the cover plate, the strength of the cover plate is not restricted, and the cover plate can be made thinner and lighter, and it can also be made smaller. be able to. Furthermore, since the striker comes into contact with the elastic resin material when the striker engages with the groove of the latch member, it has advantages such as no noise generation and improved operational feel.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional door lock device, FIGS. 2 and 3 are schematic views showing the drawbacks of the conventional door lock device, FIG. 4 is a side view of a door lock device according to the present invention, and FIG. Figure 4 is a side view when half locked, Figure 6 is a side view when fully locked,
FIGS. 7 and 8 are schematic diagrams showing modified examples of this invention A. 11...Cover plate, lla...Groove, 13...
・Latch member, 13a...Groove, 13b...Protrusion, 1
3C...first locking part, 13d...second locking part, 15
...Lock member, 18...Striker, 20...
Elastic resin material. Patent applicant: Yushin Seiki Kogyo Co., Ltd. Agent: Patent attorney Aoyama Aoyama and two others Figure 1 Figure 2 @Figure 3

Claims (1)

[Claims] (1) When the striker engages with the U-shaped groove formed in the latch member and rotates the latch member, the lock member engages with the latch member, disabling return rotation of the latch member and holding the striker in the locked position. In this door lock device, an elastic resin material is attached along the wall surface of the groove of the latch member, and a convex portion protruding toward the outer circumference of the striker is formed at the entrance portion of the liquid groove on the striker holding side. A door lock device characterized in that the striker is caused to bite into the entrance portion of the groove when a pulling force is applied to the striker.