JPH0663394B2 - Lock device for automobile - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle lock device provided to restrain an opening / closing body such as a back door.

“Prior Art” As a conventional locking device for automobiles, for example, the actual exploitation 57
There is one disclosed in Japanese Patent Laid-Open 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 Invention] However, in such a conventional vehicle lock device, 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.

The present invention has been made in view of such conventional problems, and provides a vehicle locking device that solves the above problems by making the strength of the housing and the latch support sufficient. Has an aim.

"Means for Solving Problems" The gist of the present invention for achieving the above-mentioned object is to fix the back end by engaging with a striker fixed to the mounting part of the free end of the back door. In a vehicle locking device for restraining a door in a closed state, a base housing formed by extending mounting flanges fixed to the mounting portion by fixing means on both sides of a storage portion that opens upward and is recessed into a box shape. A cover surface bulging upward faces the bottom surface of the storage portion of the base housing, and a bead surface extending from a side edge of the cover surface extends between the mounting flanges so as to cover the opening of the storage portion. And a cover plate having a joint flange fixed to the mounting portion together with the mounting flange at the end edge of the bead surface to form a housing, The cover plate side protruding upward is fitted and attached to the end face of the free end of the back door, and the support shaft of the latch is provided between the bottom surface of the base housing of the housing and the cover surface of the cover plate. It exists in the lock device for automobiles.

[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 its great resistance, so it will not warp or sink under a significant load. The bead surface extends from the side edge of the cover surface to increase the strength, and the load is reliably transmitted from the cover surface to the joint flange or the mounting flange, and the limit strength is extremely high.

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.

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

As can be seen from FIG. 3, 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 6, the lock device 20 has a mechanism inside a housing 30. Housing 30
Is configured such that the base housing 31 and the cover plate 37 are combined to have a closed cross section. The base housing 31 has mounting flanges 33, 33 extending on both sides of a storage portion 32 that is recessed in a box shape, and an entry groove 36 of the striker 10 is formed between a front surface 34 and a bottom surface 35 of the storage portion 32.

The cover plate 37 is the storage portion 3 of the base housing 31.
The cover surface 38 that covers the opening 2 and faces the bottom surface 35
The bead surface extends from both side edges of the joint flange 39, 39 at the end of the bead surface.
9, 39 are mounting flanges 33 of the base housing 31,
Burring screw portion 39 that exactly overlaps 33 and corresponds to the screw insertion hole 33a formed in the mounting flange 33.
a 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, and the housing portion 32 has the end surface B.
1, the mounting flange 33 and the joint flange 39 are fixed to the end surface B1 of the back door B together by a mounting screw B2 which is a fixing means, and is fixed to the back door B.

As can be seen in FIGS. 1, 7, and 8, the housing 3
A latch 40 and a locking plate 50 are provided inside the storage unit 32 of 0.

The latch 40 is pivotally supported by a support shaft 41 provided 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 caulked and fixed to the bottom surface 35 of the base housing 31 and the cover surface 38 of the cover plate 37, respectively.

The tip of the latch 40 forms a fork portion 43 that faces the opening of the entrance groove 36, and one tip 44 of the fork portion 43 straddles the entrance groove 36 and engages with the bottom surface 35 on the opposite side when the striker 10 is locked. Is set. Also,
The other end of the fork portion 43 of the latch 40 has a locked end 4
5, a half-latch locking end 46 is provided adjacent to the locked end 45.

The locking plate 50 is pivotally supported by a support shaft 51 that 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 a biasing spring 52 in a counterclockwise direction in FIG. It is biased in the direction of engaging 40. The support shaft 51 is the base housing 3
The bottom surface 35 and the cover surface 38 of the cover plate 37 are caulked and solidified.

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

As can be seen in FIGS. 1, 4, and 7, the housing 3
A resin body 60 is further installed inside the storage unit 32 of 0.

The resin body 60 is arranged so as to fill the outer periphery of the internal space of the storage portion 32 and the space between the latch 40 and the locking plate 50, and the inside of the storage portion 32 communicates with the entry groove 36 of the striker 10. It has a space 61.

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.
Wedge 63 that holds it as it enters and stops it
Is urged in the opening direction of the entrance groove 36 and guided and held by the guide rod 62. A stopper 64, which cushions the striker 10 from colliding, is attached to the back of the approach space 61.

As shown in FIGS. 2, 3, 5, and 6, 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, The operated end 54 of the locking plate 50 projects therefrom, and an operating mechanism 70 for operating the operated end 54 is provided on the basis of a support piece 71 folded from the rear edge of the cover surface 38 of the cover plate 37. ing.

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

The lock release lever 72 has an operated end 72a connected to a lock release handle (not shown) at one end, and
The base end 74a of the relay lever 74 is connected to the other end, and is biased by the biasing spring 73 in the counterclockwise direction in FIG.

The relay lever 74 is the operated end 5 of the locking plate 50.
4 has an operating end 74b engaging and disengaging to
c is a bush 74d on the locking / unlocking end 76a of the locking / unlocking lever 76.
Is slidably inserted through.

The locking / unlocking lever 76 is urged by a turnover spring 75 so as to be capable of seesaw movement about the support shaft 77 and to reverse and hold its position, and a power locking / unlocking end 76b and a key connected to an actuator (not shown). It has a manual locking / unlocking end 76c connected to the cylinder.

Next, the operation will be described.

1 to 7 and 8, the solid lines are all the back door B.
The state in which the lock device 20 and the striker 10 are engaged with each other when closed is shown. Here, when the lock release lever 72 is rotated clockwise in FIG. 6 by the operation handle, the base end 74a is pushed and the relay lever 74 is moved leftward in FIG. 6, and the operating end 74b is moved to the locking plate 5.
The operated end 54 of 0 is engaged and moved.

As a result, the locking plate 50 is rotated clockwise in FIGS. 7 and 8, the locking end 53 releases the locked end 45 of the latch 40, and the constraint of the latch 40 is released to enable rotation. Then, when the latch 40 rotates, the fork portion 43
Opens the striker 10 and is disengaged.

The locking / unlocking operation is as follows. In order to lock from the unlocked state, if the power is input to the power locking / unlocking end 76b, or if it is manual, the manual locking / unlocking end 76c is input, and the locking / unlocking lever 76 is rotated clockwise in FIG. The turnover spring 75 reversely holds the locking / unlocking lever 76 to lock it. Thereby, the tip portion 74c of the relay lever 74
Is lifted upward by the locking / unlocking end 76a, the relay lever 74 relatively rotates clockwise in FIG. 6, and the operating end 74b becomes a position where it cannot engage with the operated end 54 of the locking plate 50.

In this locked state, even if the lock release lever 72 is moved to move the relay lever 74, the operating end 74b swings without engaging with the operated end 54 of the locking plate 50, so that the lock device 20 is released. I can't.

When the locking / unlocking lever 76 is reversed from the locked state, the unlocked state can be obtained.

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 entrance groove 36, as shown by an imaginary line in FIG.

When the striker 10 enters by closing the back door B, it hits the fork portion 43 to rotate the latch 40 counterclockwise in FIG. 8, and the locked end 45 is locked to the locking end 53 of the locking plate 50. Then it will be in mesh.

The striker 10 and the locking device 2 due to the impact such as a collision
When a large load that tries to separate 0 and is applied,
Since the housing 30 is formed in a shell shape having a closed cross section by the base housing 31 and the cover plate 37, the strength and rigidity are high and the load can be received in a dispersed manner.
Does not easily leave.

In FIG. 1, when a load is applied such that the bottom surface 35 of the storage portion 32 of the base housing 31 is bent back and the cover surface 38 of the cover plate 37 is depressed downward, the storage portion 32 of the base housing 31 is The opening is not deformed unless the cover plate 37 is compressed and deformed, and the effect of forming a closed cross section is strongly exhibited. The bead surface extending from the side edge of the cover surface 38 to the joint flange 39 serves as resistance in the front-rear direction and the vertical direction to increase the strength, and the load is surely applied from the cover surface 38 to the joint flange 39 or the mounting flange 33. It has been transmitted and the critical strength is extremely high.

Support shafts 41, 5 for the latch 40 and the locking plate 50
1 is also less likely to be deformed and tilted, the engagement between the locked end 45 of the latch 40 and the locking end 53 of the locking plate 50 is not disengaged, and the tip 44 of the fork portion 43 of the latch 40 is inserted into the entry groove 36. There is no stepping off the edge of.

Furthermore, even when a load that causes the front surface 34 of the housing portion 32 of the base housing 31 of the housing 30 to open is applied, the base housing 31 and the cover plate 37 work together as a resistance, and therefore are not damaged.

[Advantages of the Invention] According to the vehicle locking device of the present invention, the base housing and the cover plate are combined to form a housing having a closed cross section, so that it is effective not to be deformed as a whole due to overload from any direction. The strength and rigidity are improved.
Since the cover plate side protruding upward of the housing is fitted and mounted on the end face of the free end of the back door, the mounting strength is high and the fitting part can withstand even if it is deformed in the event of a collision. Here, the strength and rigidity are also improved. Since the bead surface is formed on the side edge of the cover plate, the cross section becomes stronger and the strength and rigidity in the front-rear direction are improved, and the striker is restrained very strongly by the latch, and the striker can be separated from the lock device at the time of collision. Performance is improved and safety is improved.

[Brief description of drawings]

Each drawing shows an embodiment of the present invention. FIG. 1 is a vertical longitudinal sectional view of a locking device, FIG. 2 is a plan view of the locking device, FIG. 3 is a side view showing a mounting state, and FIG. Is also a longitudinal sectional view of an essential part, FIG. 5 is a front view of the locking device, FIG. 6 is a rear view of the same, FIG. 7 is a plan view of the locking device with a cover plate removed, and FIG. 8 is FIG. It is a VIII-VIII sectional view taken on the line. A ... vehicle body, B ... back door 10 ... striker, 20 ... locking device 30 ... housing, 31 ... base housing 32 ... storage part, 33 ... mounting flange 34 ... front face, 34 ... front face 35 ... bottom face, 36 ... entrance groove 37 ... Cover plate, 38 ... Cover surface 40 ... Latch, 41 ... Support shaft 43 ... Fork part, 45 ... Locked end 50 ... Locking plate, 51 ... Support shaft 53 ... Locking end, 54 ... Operated end 60 ... Resin body , 61 ... Entry space 62 ... Guide rod, 63 ... Wedge 70 ... Operating mechanism, 71 ... Support piece 72 ... Lock release lever, 74 ... Relay lever 76 ... Locking / unlocking lever

Claims (1)

[Claims] 1. A lock device for an automobile, which is fixed to a mounting portion of a free end of a back door, and which locks the back door in a closed state by meshing with a striker fixed to a vehicle body. A base housing formed by extending mounting flanges fixed to the mounting portion by fixing means on both sides of the recessed accommodating portion, and a cover surface bulging upward faces the bottom surface of the accommodating portion of the base housing, A bead surface extending from a side edge of the cover surface is extended between the mounting flanges so as to cover the opening of the storage portion, and a joint flange fixed to the mounting portion together with the mounting flange is an end of the bead surface. A housing is formed by the cover plate formed on the edge, and the cover plate side projecting upward of the housing is fitted to the end surface of the free end of the back door and mounted. A lock device for an automobile, wherein a supporting shaft of a latch is provided between a bottom surface of the base housing of the housing and a cover surface of a cover plate.