JPH0711266Y2 - Vehicle locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a vehicle lock device suitable for a back door of an automobile or the like.

(Prior Art) Generally, a lock device employed in a back door of an automobile has a structure in which a base plate is assembled with a meshing mechanism that meshes with a striker when the back door is closed.

More specifically, for example, as shown in FIG. 6, a latch 107 is provided on a first shaft 105 whose both ends are supported by a base plate 101 and a cover plate 103, and a locking plate 111 is provided on a second shaft 109. Has been. The latch 107 is a striker 113 when the back door is closed.
When it engages with, it is constrained by the locking plate 111. An example of such a structure is described in Japanese Utility Model Laid-Open No. 62-56667.

(Problems to be Solved by the Invention) As described above, the respective ends of the shafts 105 and 109 are inserted into the holes 101 and 104 of the base plate 101 and the cover plate 103 so that both ends are supported. The supporting strength is taken up by the base plate 101, and the cover plate 103 has a thin plate thickness within an allowable range because the weight reduction is required.

Therefore, when a load acts on the lock device due to a collision or the like, the cover plate 103 supporting one end of the shaft 105 is largely deformed as shown in FIG. 7, or a crack is formed in the hole 104 of the cover plate 103 into which the shafts 105 and 109 are fitted. In some cases, the striker 113 and the latch 107 may be disengaged from each other. For this purpose, for example, a resin body 115 made of synthetic resin is provided inside the cover plate 103, or the shaft 10 on the cover plate 103 side is provided.
By caulking the end portions of 5,109 in the same manner as the shaft on the base plate 101 side, it is possible to considerably improve the support strength.

However, in the former case, since the number of parts increases,
As a result, the effect of increased man-hours for parts management and increased costs is inevitable. Further, in the latter case, the caulking work is performed separately, which is not desirable in terms of workability.

Therefore, an object of the present invention is to provide a vehicle locking device that is excellent in the assemblability of the shaft of the latch and the restraint member that restrains the latch and that can improve the support strength of both ends of the shaft.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention is pivotally supported on one of the left and right shafts supported at both ends by a base plate and a cover plate, and is capable of meshing with a striker. Latch and a restraint member that is pivotally supported by the other shaft and restrains the latch at the time of engagement, and is fitted to the cover plate side in a U-shape with at least a constant sectional plate thickness. A joint portion is formed, one end portion of the shaft is fitted and fixed to the fitting portion, and the other end portion of the shaft is fixed to the base plate side by caulking.

(Operation) According to such a lock device, one of the shafts is securely fixed by caulking. The other end is fixed by fitting and is easily attached, and the support area of the cover plate that supports the shaft is an integrally continuous fitting part that functions as a reinforcing rib and improves surface rigidity. To do. Therefore, even if a load acts on the lock device, the shaft does not tilt due to the deformation of the cover plate. Further, the fitting portion can be simultaneously formed by pressing at the time of forming the cover plate, so that workability is not impaired.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the drawings of FIGS. 1 to 5.

Reference numeral 1 in the drawing denotes a base plate of the lock device 3.
A peripheral wall 5 is formed around the plate body 1a of the base plate 1, and an entrance groove 9 into which a striker 7 enters at one end, and a pair of mounting portions 11 and 11 extending from the peripheral wall 5 to the left and right.
Is provided.

A cover plate 13 is attached to the mounting portions 11 and 11 of the base plate 1.
The flange portions 15 and 15 are joined together by overlapping, and the cover plate 13 is provided with a notch groove 17 corresponding to the entrance groove 9.

A latch 21 supported by a first shaft 19 and a restraining member 25 such as a locking plate supported by a second shaft 23 are assembled between the plate body 1a and the cover plate 13.

A flange portion 27 and an engagement hole 29 are provided at one shaft end of each of the first and second shafts 19 and 23. And the shaft
One end of 19,23 is integrally fixed to the plate body 1a of the base plate 1 by caulking 31,31. The other ends of the shafts 19 and 23 having the flange portion 27 are
Are in surface contact with the back surface of the cover plate 13 and the engaging holes
29 is fixedly supported by fitting with the fitting portion 33.

The fitting portion 33 is formed at the same time when the cover plate 13 is press-formed, has a constant cross-sectional plate thickness, and has a U-shaped continuous shape that projects downward. 29
The hole diameter is set to be almost the same.

The fitting portion 33 provided on the cover plate 13 is
As shown in the figure, it is also possible to have a shape in which the plate thickness of the cross section is constant and the shape is continuous in an inverted U shape protruding upward. In this case, the shafts 19 and 23 have the fitting portion 3 in addition to the flange portion 27.
Engagement protrusions 35 that fit with 3 are provided.

On the other hand, the latch 21 supported by the first shaft 19 is rotatable to a meshing position (solid line in FIG. 2) where it meshes with the striker 7 and a standby position (chain line in FIG. 2) for meshing, and the biasing spring 37 is always present.
It is urged by the meshing standby position (chain line).
One end of the biasing spring 37 is at the base of the latch 21, and the other end is a restraint member.
It is locked to each of the 25 bases.

The restraint member 25 is pulled counterclockwise by pulling the actuation cable 39 in the direction of arrow A to be in the restraint release state. As a result, the protrusion 25a of the restraint member 25 is disengaged from the latch claw 21a of the latch 21.

According to the lock device configured as described above, the striker 7 and the latch 21 are engaged and the locked state is secured when the back door is fully closed (FIG. 2). At this time, when a large load is applied to the shafts 19 and 23 of the lock device 3 due to a collision or the like, one end of the shafts 19 and 23 is received by the base plate 1 and the other end is received by the cover plate 13. At this time, since the fitting portion 33 functions as a reinforcing rib and the rigidity of the surface rigidity is increased, the deformation of the cover plate 13 can be suppressed to a small extent, so that the latch and the striker are not disengaged from each other.

The fitting part 33 is also provided on the base plate 1 side,
It is also possible to use a means for fitting the ends of the shafts 19, 25 to 33.

[Effects of the Invention] As described above, according to the vehicle locking device of the present invention, one of the shafts can be securely fixed by caulking, and the other end of the shaft can be fixed by fitting. Therefore, it can be easily mounted and has excellent mountability. Also,
Since the fitting part that functions as a reinforcing rib that increases the surface rigidity of the cover plate can be integrally molded, workability is not impaired, and even if a large load is applied to the shaft, the part that supports the shaft of the cover plate Deformation and cracks can be kept small. Therefore, disengagement between the latch and the striker does not occur.

[Brief description of drawings]

FIG. 1 shows the locking device of the present invention, which is II of FIG.
FIG. 2 is a plan view of the locking device, FIG. 3 is a perspective view of the cover plate, FIG. 4 is a perspective view of the restraint member, and FIG.
6 is a sectional view showing a modified example of the fitting portion, FIG. 6 is a sectional view similar to FIG. 1 showing a conventional example, and FIG. 7 is an explanatory diagram of the conventional example. 1 …… Base plate 7 …… Strike 13 …… Cover plate 19,23 …… Shaft 21 …… Latch 25 …… Restricting member 33 …… Mating part

Claims (1)

[Scope of utility model registration request] 1. A latch that is pivotally supported on one of the left and right shafts supported at both ends by a base plate and a cover plate and is capable of meshing with a striker, and a constraint that is pivotally supported by the other shaft and that constrains the latch at the time of meshing. A member having a U-shaped continuous fitting portion with a constant thickness at least on the cover plate side, and one end portion of the shaft is fitted into the fitting portion. A locking device for a vehicle, characterized in that the other end of the shaft is caulked to the base plate side.