JPS6117682A - Door lock apparatus for car - 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] (Industrial application field) The present invention relates to an automobile door lock device.

(Prior Art) The conventionally known prior art is as shown in FIGS. 1 and 2, in which A is a cover plate made of a metal plate, B is a back plate made of a metal plate, and a body C made of synthetic resin is placed between them. is sandwiched. D is a recess formed in the body C;
A latch E is rotatably mounted within the recess by a shaft F. G
Striker 1H on the vehicle body side is a ratchet that prevents the latch E from reversing, and ■ is on the extraction side.

(Problems to be Solved by the Invention) The above-mentioned known lock device locks the latch E only on the receiving side I of the body C made of synthetic resin when a large load is applied, such as in a vehicle accident. Therefore, the receiving side I had to be made larger than necessary.

(Means for Solving the Problem) Therefore, the present invention provides a cover plate 1 made of a metal plate, a body 3 made of synthetic resin, and a back plate 2 made of a metal plate.
In the automobile door lock device formed by the above, on the entry side of the striker 4 of the cover plate 1, a part of the cover plate 1 is arranged perpendicularly to the inward direction intersecting the entry direction (A) of the striker. It is bent to form a latch retaining portion 16a, and the latch retaining portion 16a is connected via a connecting portion 23 whose length C in the direction of entry of the striker (A) is greater than the thickness of the cover plate 1. This is a structure of an automobile door lock device characterized by the following.

(Embodiment) To explain an embodiment of the present invention with the drawings, 1 is a cover plate made of a metal plate, 2 is a back plate similarly made of a metal plate, and between the cover plate 1 and the back plate 2, there is a A resin body 3 is provided. A striker 15 fixed to the vehicle body is a latch that engages with the striker 4. ``The cage 5 is rotatably mounted within a recess 6 formed in the body 3 by a shaft 7. 8 is an engagement groove with which the striker 4 engages; 9 is a half-door engagement step formed on the outer circumferential surface of the latch 5; 10 is a full-door retaining step similarly formed on the outer circumference of the latch 5; 11 is a ratchet whose pawl 12 engages the engagement step 9.10 to prevent the latch 5 from being reversed. Reference numeral 13 designates a shaft on which the ratchet 11 is mounted, and reference numeral 14 represents an entry groove into which the striker 4 enters.

However, in the cover plate 1 of the present invention, the side edge 15 below the penetration groove 14 in the figure is bent in the direction of entry of the striker and bent at right angles to the body 3 side to form the bent portion 1.
6, but the side edge 15 above the penetration groove 14 is bent in the direction intersecting the direction of penetration of the striker to form the body 3.
It is bent at a right angle to the side to form a latch retaining portion 16a. The latch extraction portion 16a is connected to the cover plate 1 via a connecting portion 23 whose length C in the direction of entry of the striker is greater than the thickness of the cover plate 1.

In the embodiment shown in FIG. 7, a reinforcing bent part 19 is further formed on the edge 18 of the bent part 16, and is bent in either direction.

In addition, in the figure, 20 is an open lever, and 21 is a locking lever.

(Function) Since the present invention is as described above, when the door is closed, the striker 4 attached to the vehicle body engages with the engagement groove 8 of the latch 5 of the lock device body attached to the door, and the latch 5 from the state shown in FIG. 3 to the state shown in FIG. 4 and locked. Therefore, even if a load is applied to the latch 5 in the direction of disengagement due to an accident or the like, the movement of the latch 5 is prevented from moving in the direction in which the striker enters the cover plate 1 (A).
Since there is a latch retaining portion 16a connected to the latch through the connecting portion 23 whose length C is greater than the thickness of the cover plate 1, the latch is retained even if the thickness of the receiving side r is made thinner.

(Effects) As described above, the conventionally known prior art is as shown in FIGS. 1 and 2, where A is a cover plate made of a metal plate, B is a back plate made of a metal plate, and a synthetic resin is placed between them. A manufactured body C is sandwiched in between. D is a recess formed in the body C, and a latch E is fixedly attached to the shaft F within the recess. G is the striker on the vehicle body side; 1H is the ratchet that prevents the latch E from reversing; ■ is the striker on the extraction side. The above-mentioned known locking device prevents the latch E from receiving the latch E only at the receiving side of the body C made of synthetic resin when a large load is applied, such as in a vehicle accident. It had to be a structure.

However, the present invention provides a door lock device for an automobile formed of a cover plate l made of a metal plate, a body 3 made of synthetic resin, and a back plate 2 made of a metal plate. In this case, a part of the cover plate 1 is bent at right angles in an inward direction intersecting the direction of entry of the striker (a) to form a latch stopper part 16a, and the latch stopper part 16a is formed in the direction of entry of the striker (a). b) Since the structure of the automobile door lock device is characterized in that the length C is connected via the connecting portion 23 which is larger than the plate thickness of the cover plate Even if a load is applied to the latch 5 in the direction of disengagement, the movement of the latch 5 is prevented by connecting the connecting portion 23 in which the length C of the striker in the intrusion direction with respect to the cover plate l is larger than the thickness of the cover plate 1. This is prevented by the latch retaining portion 16a connected through the latch.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the known example, Fig. 2 is a II-II sectional view, Fig. 3 is a longitudinal sectional view of the present invention, Fig. 4 is a longitudinal sectional view of the door in the open state, and Fig. 5 is a rear view. , FIG. 6 is a perspective view of the cover plate, FIG. 7 is a view of another embodiment of FIG. 6, and FIG. 8 is a perspective view of the cover plate, latch, and ratchet. Explanation of symbols l...Cover plate, 2...Back plate, 3
... Synthetic resin body Nishikawa striker - 15 ... Latch, 6 ... Recess, 7 ... Shaft, 8 ... Engagement groove, 9
...Half door engagement stepped portion, 1o...Full door engagement stepped portion,
11...Ratchet, 12...Claw, 13...Shaft,
14... Entry groove, 15... Side edge, 16... Bent part, 16a... Latch removal prevention part, 17... Inner peripheral wall, 18
... Edge, 19... Reinforcement bent part, 2o... Open lever, 21... Locking lever, 22... Receiving side, 23... Connection part. Patent Applicant: Mitsui Kinzoku Mining Co., Ltd. Figure 1 Figure 1 Figure 2 Figure 4 Figure 5 Figure 7 Figure 6 Figure 8

Claims (1)

[Claims] In an automobile door lock device formed by a cover plate 1 made of a metal plate, a body 3 made of synthetic resin, and a back plate 2 made of a metal plate, the cover plate 1 is provided on the entry side of the striker 4 of the cover plate 1. 1 is bent at right angles in the inward direction intersecting the striker entry direction (a) to form a latch removal prevention part 16a, and the latch removal prevention part 16a has a length c in the striker entry direction (a) that covers the latch removal prevention part 16a. A door lock device for an automobile, characterized in that the device is connected via a connecting portion 23 that is larger than the thickness b of the plate 1.