JP2535970Y2 - Lock device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device provided on a door of an automobile or the like.

[0002]

2. Description of the Related Art Conventionally, as such a lock device, one described in Japanese Utility Model Laid-Open No. 57-31473 is known.

In this device, a striker entry groove is formed in a base plate fixed to a door, and a latch plate is pivotally supported by the base plate. Then, when the door is closed, the latch plate is engaged with the striker fixed to the vehicle body in a state where the striker is inserted into the entry groove, and the locked state is maintained.

[0004]

However, in such a conventional locking device, in order to secure or increase the strength of engagement with the striker, a flange formed by a press is provided on the periphery of the striker entrance groove of the base plate. For this reason, when a load acts on the lock device by impact, the latch plate is likely to be deformed. That is, when a load is applied to the lock device due to a vehicle collision or the like, a force may be applied to the latch plate to bend the latch portion in the direction toward the base plate toward the base plate. Since the flange is formed at the peripheral edge of the striker entrance groove of the base plate, the tip of the engaging portion of the latch plate can easily slide on the round (R) portion existing at the bent base portion of the flange, and the latch plate and the base plate are deformed. There is a possibility that.

In order to prevent such deformation of the latch plate and the base plate and increase the lock strength, it is necessary to increase the thickness of the latch plate and the base plate or to change the material, thereby increasing the weight and cost of the entire lock device. There is a problem that leads to up.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems and to provide a lock device capable of improving the lock strength without increasing the thickness of a latch plate or a base plate.

[0007]

In order to achieve the above object, the present invention provides a latch plate for engaging a striker.
When, in the lock device flange is formed on the peripheral portion of the striker entry groove of the base plate to <br/> pivotally supports a locking plate for restraining the latch plate, the base
Striker with approximately the same width as the striker entry groove of the plate
A reinforcing plate having an entrance groove,
The latch is disposed between the base plate and the base plate;
Plate and the pivot of the locking plate.
The base plate so as to overlap with the flange.
Fixed, the latch plate and the striker
The extended portion of the engaging portion can contact the reinforcing plate.
Characterized in that that.

[0008]

According to the present invention, reinforcement for the base plate is provided.
To ensure that the plate is aligned
Moreover, the flange and the reinforcing plate
When the latch plate engages with the striker.
The extension of the switch plate and the reinforcement plate can
Increased base plate and latch plate thickness
The locking strength can be improved without performing. Further
In addition, the assembling of the reinforcing plate to the base plate is
It can be easily done without using any special fixing means. For this,
When a load is applied to break the latch plate by the striker due to a vehicle collision or the like, at least the extended portion of the engaging portion of the latch plate comes into contact with the reinforcing plate.
As a result , the deformation of the latch plate is prevented, and the lock strength is secured.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 100 denotes a door lock body fixed to a swinging edge of an opening / closing body such as a back door in a vehicle. Reference numeral 200 denotes a striker fixed to the vehicle body opposite to the door lock body 100. It is.

At the approximate center of the base plate 102 of the door lock body 100, a striker entrance groove 102A into which the striker 200 enters is cut out, and a flange 102B for increasing the strength will be described later on the periphery of the striker entrance groove 102A. It is press-formed so as to protrude to the side opposite to the latch plate 104 (see FIGS. 3 and 6).

A latch plate 104 is provided on both sides of the striker entrance groove 102A of the base plate 102.
And the locking plate 106 has the shafts 108 and 11
0, each is rotatably supported.

Reference numeral 112 denotes a reinforcing plate according to the present invention. As is apparent from FIGS. 3 and 5, a striker entrance groove 112A having substantially the same width as the striker entrance groove 102A of the base plate 102 is cut out. In this embodiment, the reinforcing plate 112 is formed in a shape substantially matching the flat portion 102C of the base plate 102.
12B are drilled and the base plate 10 is
The second flat portion 102C is fixed by being overlapped. Furthermore, the flat peripheral portion 112 around the striker entrance groove 112A
C is formed apart from the rounded (R) portion of the flange 102B (see FIG. 3).

The engaging portion 1 of the latch plate 104
04A is formed with an extended portion 104B as a tip extending from the tip of the conventional engaging portion.
4B and the flat peripheral portion 112C are
And when the striker 200 is engaged (see FIG. 6).

As is clear from FIG. 4, the cover plate 114 has a substantially hat-shaped cross section, and
Both upstanding wall portions 114B, 11 rising from 4A, 114A
4B, a ceiling wall 114C connecting the two, and a ceiling wall 1
A hanging wall portion 114D hanging down from 14C is provided, and through holes 114E, 114E are formed in the mounting leg portions 114A, 114A. The locking plate 106 is linked to an unlocking lever 116 pivotally connected to a rear plate 102D of the base plate 102 by a shaft. The unlocking lever 116 is connected to a key cylinder of a back door (not shown) via a rod 118. It is connected to.

Further, the latch plate 104 and the locking plate 106 are urged by a spring 120 in a reverse rotation direction in which they are attracted to each other. Reference numeral 122 denotes a wedge bumper which is attached to one of the upright wall portions 114B of the cover plate 114 and has a flexible tongue piece 122A.
Reference numeral 4 denotes a bumper bar attached to the hanging wall 114D, a part of which extends to the back of the flexible tongue 122A.

When the striker 200 enters the striker entrance groove 102A, the striker 200 is held between the two forks of the latch plate 104, and
00 is a wedge bumper 122 and a bumper bar 124
Of the latch plate 104 with the urging force of
A and are locked irremovably. Further, when the release lever 116 is rotated via the rod 118 described above, the locking plate 106 rotates counterclockwise in the figure to release the restraint of the latch plate 104, and the engagement of the striker 200 is released. It has become.

In this embodiment having the above structure, the force for bending the engaging portion 104A of the latch plate 104 in the direction toward the base plate 102 (the direction of arrow A in FIG. 6) due to a collision of the vehicle or the like. Does, the extended portion 104B at the tip of the engaging portion 104A of the latch plate 104 abuts on the flat peripheral portion 112C around the striker entry groove 112A of the reinforcing plate 112, and further deformation is prevented. .

As described above, according to the configuration in which the reinforcing plate 112 is provided, the distal end of the engaging portion of the latch plate 104 is extended, and the extended portion 104B abuts on the base plate 102 other than the flange portion 102B. The size of the device can be easily reduced without increasing the size of the device due to the increase in the strength of the latch plate 104 and the entry of the striker 200.

[0020]

[0021]

As is clear from the above description, according to the present invention , the position of the reinforcing plate with respect to the base plate.
Since the alignment can be performed reliably, the flange
And the reinforcement plate overlap, and the latch play
Extension of the latch plate when the
Since the mounting portion and the reinforcing plate can be brought into contact with each other, the lock strength can be improved without increasing the thickness of the base plate and the latch plate . Furthermore, base play
When attaching the reinforcing plate to the
Easy without using.

[Brief description of the drawings]

FIG. 1 is a top perspective view showing an embodiment of the present invention.

FIG. 2 is a plan view showing only main components of an embodiment of the present invention for easy understanding.

FIG. 3 is a cross-sectional view taken along the line III-III of FIG.

FIG. 4 is a perspective view showing a cover plate according to an embodiment of the present invention;

FIG. 5 is a perspective view showing a reinforcing plate according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a main part of FIG. 3, showing an engagement position of a latch plate.

[Explanation of symbols]

 102 base plate 102A striker entry groove 102B flange 104 latch plate 104A engaging portion 106 locking plate 112 reinforcing plate 112A striker entry groove

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-285182 (JP, A) JP-A-62-244990 (JP, A) JP-A-63-198771 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A latch plate for engaging a striker.
And a locking plate for restraining the latch plate , wherein a flange is formed on a peripheral portion of the striker entrance groove of the base plate that pivotally supports the locking plate .
A reinforcing plate having a striker entrance groove,
Disposed between the plate and the base plate, and
Pivots of the latch plate and the locking plate
The base is overlapped with the flange by a support shaft.
The latch plate and the switch are fixed to the plate.
The extending portion of the engaging portion with the triker and the reinforcing plate
A lock device that can be abutted .