JPH0634535Y2 - Lock device for automobile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of use" The present invention relates to a vehicle lock device provided to restrain an opening / closing body such as a back door.

"Prior Art" A conventional locking device for an automobile is, for example, SAIKAI Sho 57-
There is one disclosed in Japanese Patent No. 137280.

That is, in the publication, a housing is formed by fitting a front base to a rear base having an indented portion, and the front base is brought into contact with the bottom wall of the indented portion of the rear base and fixed by the pivot of the latch, and the latch is held between them. On the other hand, it is disclosed that an entry groove for a striker is opened in the rear base toward the latch.

"Problems to be solved by the device" However, in such a conventional locking device for an automobile, since the opening of the recessed portion of the rear base that is the main body of the housing is left open, the rigidity is low and the impact due to an accident or the like is low. It is easy to deform when applied, but it depends on the direction of impact,
Latches that should have been prevented from slipping off due to the crotch opening phenomenon of the entry groove, the warping or sinking phenomenon of the rear base, the warping or sinking phenomenon of the front base, etc. However, there was a problem that the striker might come off by stepping on the tip of the striker.

Regarding such conventional problems, the applicant previously proposed the one described in the specification attached to the application of Japanese Patent Application No. 61-087569.

That is, the specification describes that a housing is formed by a base housing and a cover plate, and a support shaft of a latch is provided between the bottom surface of the base housing and the cover surface of the cover plate. The above problems are solved by making the strength and rigidity of the latch support sufficient.

It is an object of the present invention to provide an automobile locking device that solves the above problems by making the strength of the housing and the latch support larger than that of the above proposal.

[Means for Solving Problems] The gist of the present invention for achieving such an object is to be fixed to a mounting portion of either the vehicle body or the opening / closing body,
In addition, in a vehicle locking device that locks the opening and closing body in a closed state by meshing with a striker fixed to the other, mounting flanges fixed to the mounting part by fixing means on both sides of the box-shaped storage part. A base housing that extends, and a cover surface faces the bottom surface of the housing portion of the base housing, is installed between the mounting flanges so as to cover the opening of the housing portion, and is fixed to the mounting portion together with the mounting flange. A cover plate on which a joint flange is formed to form a housing, and a latch support shaft and a locking plate support shaft are installed between the bottom surface of the base housing of the housing and the cover surface of the cover plate. Forming a projecting seat part for mounting both the support shafts, and at least the seat part and the seat part. And a projecting bead extending in a radial direction from the seat to the vicinity of the mounting flange.

[Operation] Then, when the housing is formed by the base housing and the cover plate so as to have a closed cross section, and when a large load is applied to bend or sink one of the base housing and the cover plate, The other is the great resistance.

Each of the support shafts tries to dent the protruding seat portion, but since the protruding seat portion projects from the cover plate and has high strength and rigidity, it does not deform. In addition, the projecting bead linearly connects the two projecting beads and stretches them to resist the deformation of the cover plate. Further, the projecting beads extending radially from the seat portion to the vicinity of the mounting flange are joined together, and the mounting flanges are connected by the projecting bead in the shape of a hollow so that strong strength and rigidity are maintained. Even when an overload is applied in the direction in which the support shaft is tilted, the continuous protruding beads serve as support rods, and deformation of the cover plate is effectively prevented.

That is, it does not warp or sink under a considerable load.

When a load that causes the striker's entrance groove to open is applied, both members of the base housing and the cover plate similarly have large resistance.

When the side surface of the tip of the latch is applied to a part of the base housing and a load is applied to cause it to step off the base housing, the support shaft of the latch solidifies the base housing and the cover plate. Also, the object to be engaged is less likely to be deformed, and the strength and rigidity are dramatically improved as compared with those having an open cross section.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

Each drawing shows an embodiment of the present invention.

The present embodiment embodies the present invention in a back door lock of an automobile.

As shown in FIG. 2, the striker 10 is fixed to the vehicle body A, and the lock device 20 is attached to the end surface B1 of the back door B facing the striker 10.

As can be seen from FIGS. 1 to 5, the lock device 20 has a mechanism inside a housing 30. The housing 30 is configured to have a closed cross section by combining the base housing 31 and the cover plate 37. The base housing 31 has mounting flanges 33, 33 extending on both sides of a storage part 32 that is recessed in a box shape, and an entrance groove 36 of the strusca 10 is formed between the entire surface 34 and the bottom surface 35 of the storage part 32.

The cover plate 37 covers the opening of the storage portion 32 of the base housing 31. Joint flanges 39, 39 are extended on both sides of the cover surface 38 facing the bottom surface 35, and the joint flanges 39, 39 are just overlapped with the mounting flanges 33, 33 of the base housing 31 and are bored in the mounting flange 33. A burring screw portion 39a corresponding to the screw insertion hole 33a is formed.

In the housing 30, the mounting flanges 33, 33 are pressed against the inner surface of the end surface B1 of the back door B, the housing 32 projects from the end surface B1, and the mounting screw B2 serving as a fixing means causes the mounting flange 33 and the joint flange 39 side back door. It is fixed to the back door B by being fixed to the end surface B1 of B together.

As can be seen in FIGS. 3-5, the storage portion of the housing 30.
A latch 40 and a locking plate 50 are installed inside the 32.

The latch 40 is pivotally supported by a support shaft 41 which is installed between the bottom surface 35 of the base housing 31 and the cover surface 38 of the cover plate 37, and is biased by an urging spring 42 in the entry groove 36 which is clockwise in FIG. Is urged in the opening direction. The support shaft 41 is the bottom surface 35 of the base housing 31 and the cover surface of the cover plate 37.
38 and 38 are respectively caulked and solidified.

The tip of the latch 40 has a fork portion 43 facing the opening of the entrance groove 36.
The tip 44 of one of the forks 43 is a striker.
When the 10 is locked, it is set so as to straddle the entry groove 36 and reach the bottom surface 35 on the opposite side. Further, the other end of the fork portion 43 of the latch 40 forms a locked end 45, and a half latch locking end 46 is provided so as to be adjacent to the locked end 45.

The locking plate 50 is pivotally supported by a support shaft 51 installed between the bottom surface 35 of the base housing 31 and the cover surface 38 of the cover plate 37, and is biased by a biasing spring 52 in a counterclockwise direction in FIG. It is biased in the direction of engaging 40. The support shaft 51 is caulked and fixed to the bottom surface 35 of the base housing 31 and the cover surface 38 of the cover plate 37, respectively.

As shown in FIG. 1 and FIG. 6 to FIG. 13, the cover surface 38 of the cover plate 37 is provided with a seat portion 38a protruding upward, to which an end portion of the support shaft 41 is attached, and a support shaft 51. An upward projecting seat portion 38b to which the end portion is attached is formed.

A protruding bead 38c is formed so as to connect the protruding seat 38a and the protruding seat 38b. Further, a protruding bead 38d is formed in a radial direction from the protruding seat 38a, and similarly, a protruding bead 38e is formed in a radial direction from the protruding seat 38b.

As shown in FIG. 9, the cover surface of the cover plate 37
A projecting bead 38f parallel to the projecting bead 38c is formed on the upper portion of 38. A projecting bead extending above the cover surface 38
38d and protruding bead 38e are connected to protruding bead 38f, respectively.

Further, two projecting beads 38g extend from the projecting beads 38f to above the cover surface 38, and the projecting beads 38g are respectively connected to the support pieces 71 of the operating mechanism 70.

As shown in FIG. 7 and FIG. 10 to FIG. 13, the bead height of each projecting bead 38c, 38d, 38e, 38f, 38g is the projecting seat 38.
Same as a, 38b.

The locking plate 50 has a locking end 53 that engages with and disengages from the locked end 45 of the latch 40, and also has a operated end 54.

As can be seen in FIGS. 3-5, the storage portion of the housing 30.
Inside the 32, a resin body 60 is further installed.

The resin body 60 is attached to the outer periphery of the storage space 32 and the latch.
It is arranged so as to fill the space between the locking plate 50 and the locking plate 50, and has an entry space 61 communicating with the entry groove 36 of the striker 10 inside the storage portion 32.

A guide rod 62 is installed on a side portion of the approach space 61 in a direction substantially the same as the approach direction of the striker 10, and a wedge 63 that holds the striker 10 to prevent it from rattling as the striker 10 enters is provided with an entrance groove 36.
Is held in the guide rod 62 by being biased in the opening direction. A stopper 64 for cushioning the collision of the striker 10 is attached to the inside of the approach space 61.

As shown in FIGS. 1 to 5, there is an opening between the rear edge of the cover surface 38 of the cover plate 37 of the housing 30 and the rear end of the base housing 31, and the locking plate 50 is operated from there. The end 54 is projected, and the operating mechanism 70 for operating the operated end 54 is the cover surface 38 of the cover plate 37.
It is provided on the basis of a support piece 71 folded from the rear edge of the.

The operation mechanism 70 includes a lock release lever 72 and a relay lever 74.
And a lock / unlock lever 76, and a lock release lever.
The lock lever 72 and the locking / unlocking lever 76 are coaxially supported by the support piece 71 via a support shaft 77 that is planted in a substantially central portion of the support piece 71.

The lock release lever 72 has one end connected to a lock release handle (not shown) and the other end connected to a relay lever 74.

The relay lever 74 has an operation end (not shown) that engages with and disengages from the operated end 54 of the locking plate 50.

The locking / unlocking lever 76 is connected to an actuator and a key cylinder (not shown).

Next, the operation will be described.

FIGS. 1 and 3 show the engagement state of the lock device 20 and the striker 10 when the back door B is closed. Here, when the lock release lever 72 is rotated by the operation handle, the relay lever 74 moves to the left in FIG. 1, and the operating end of the relay lever 74 is the operated end of the locking plate 50.
Engage 54 and move it.

As a result, the locking plate 50 is rotated clockwise in FIG. 3, the locking end 53 releases the locked end 45 of the latch 40, the constraint of the latch 40 is released, and the locking plate 50 is rotatable. When is rotated, the fork portion 43 opens the striker 10 and the engagement is released.

The operation of closing the open back door B and locking the striker 10 to the lock device 20 is as follows. When the striker 10 is disengaged from the lock device 20 due to the opening of the back door B, the latch 40 is in a posture in which the fork portion 43 faces the opening of the entry groove 36.

When the striker 10 enters by closing the back door B,
When the latch 40 hits the fork portion 43 and is rotated counterclockwise in FIG. 3, and the locked end 45 is locked to the locking end 53 of the locking plate 50, the engaged state is established.

When a large load is applied to disengage the striker 10 and the locking device 20 due to an impact such as a collision, the housing 30 is formed in a shell shape having a closed cross section by the base housing 31 and the cover plate 37. Since it has high strength and rigidity and can receive the load in a dispersed manner, it does not easily come off.

In FIG. 4, the bottom surface of the storage portion 32 of the base housing 31
Bend 35 downwards, cover plate 38 cover surface 38
When a load is applied to sink the lower part of the base housing 31, the opening of the accommodating portion 32 of the base housing 31 does not deform unless the cover plate 37 is compressed and deformed, and the effect of forming a closed cross section is strongly exhibited.

The support shaft 41 tries to recess the protruding seat portion 38a formed on the cover surface 38 in the downward direction in FIG. 8, but the protruding seat portion 38a protrudes upward, and the protruding seat portion 38a is exposed to the downward force. On the other hand, since it becomes a compressive load and has high strength and rigidity, it does not deform.
Similarly, the projecting seat portion 38b is also a compressive load against the downward force of the support shaft 51 and has high strength and rigidity, so that it does not deform.

Further, the protruding bead 38c formed on the cover surface 38 is stretched between the two protruding seat portions 38a, 38b, and the cover plate 3
Resist 8 so that it does not deform.

Further, the protruding beads 38d serve as a resistance so that the protruding seat portion 38a does not deform, and the protruding bead 38e serves as a resistance so that the protruding seat portion 38b does not deform. The protruding beads 38f and the protruding beads 38g also have a large resistance so that the cover surface 38 of the cover plate 37 is not deformed. The projecting beads 38d, 38d extending radially from the seats 38a, 38b to the vicinity of the mounting flanges 33, 33 are joined together, and the mounting flanges 33, 33 are connected by a projecting bead in the shape of a hollow to maintain strong strength and rigidity. . Support shaft 41,5
Even when an overload is applied in the direction in which 1 is tilted, the continuous protruding beads serve as support rods, and deformation of the cover plate 37 is effectively prevented.

That is, the cover plate 37 having extremely high strength and rigidity can be obtained by the protruding seat portions 38a, 38b, the protruding beads 38c, and the like.

Therefore, the latch 40, the support shaft 4 of the locking plate 50
1,51 are also less likely to be deformed and tilted, the engaged end 45 of the latch 40 and the engaging end 53 of the locking plate 50 are not disengaged, and the tip of the fork portion 43 of the latch 40 is not disengaged.
The 44 does not step off the edge of the entry groove 36.

Further, the housing portion 32 of the base housing 31 of the housing 30
Even when a load is applied to open the entire surface 34, the base housing 31 and the cover plate 37 work together to provide resistance, so that they are not destroyed.

[Advantage of the Invention] According to the vehicle lock device of the present invention, the strength and rigidity are effectively improved so that the lock device is not deformed by an overload on the lock device from any direction. Even if an overload is applied in the direction of tilting the support shaft, the projecting beads form support rods that make up the continuous projecting beads, effectively preventing deformation of the cover plate, and making the striker restraint by the latch extremely strong. The performance of the limit of the striker being disengaged from the lock device at the time of a collision is improved, and the safety is improved.

[Brief description of drawings]

Each drawing shows one embodiment of the present invention. Fig. 1 is a plan view of a locking device, Fig. 2 is a side view showing a mounting state, Fig. 3 is a cross-sectional view of a main part, and Fig. 4 is a lock. Vertical vertical section of the device,
FIG. 5 is a longitudinal sectional view of the main part of the same, FIG. 6 is a perspective view of the cover plate, FIG. 7 is a view in the direction of arrow VII of FIG. 6, and FIG.
FIG. 8 is a sectional view taken along the line VIII-VIII in FIG.
10 is a sectional view taken along line XX of FIG. 9, and FIG. 11 is XI of FIG.
-XI line sectional view, FIG. 12 is a XII-XII line sectional view of FIG.
FIG. 13 is a sectional view taken along the line XIII-XIII in FIG. A …… Body, B …… Back door 10 …… Strike, 20 …… Locking device 30 …… Housing, 31 …… Base housing 32 …… Storage part, 33 …… Mounting flange 35 …… Bottom surface, 36 …… Enter Groove 37 …… Cover plate, 38 …… Cover surface 38a, 38b …… Projective seat 38c …… Projective bead 40 …… Latch, 41 …… Support shaft 50 …… Locking plate, 51 …… Support shaft 70 ...... Operating mechanism, 71 ...... Support piece

Claims (1)

[Scope of utility model registration request] 1. A locking device for an automobile, which locks an opening / closing body in a closed state by engaging with a striker fixed to either one of a vehicle body or an opening / closing body and fixed to the other, and a box-shaped locking device. A base housing formed by extending mounting flanges to be fixed to the mounting portion by fixing means on both sides of the inserted storage portion; and a cover surface facing a bottom surface of the storage portion of the base housing, and an opening of the storage portion. A housing is formed by a cover plate that is installed between the mounting flanges so as to cover and has a joint flange that is fixed to the mounting portion together with the mounting flange, and forms a housing, and a bottom surface of the base housing of the housing and a cover surface of the cover plate. A support shaft for the latch and a support shaft for the locking plate are installed between them, and both support shafts are attached to the cover plate. Forming projecting seats respectively, at least projecting beads that linearly connect the seats and seats, and projecting beads extending radially from the seats to the vicinity of the mounting flange are formed. A locking device for an automobile characterized by the above.