JP2527494Y2 - Car door latch device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile door latch device for locking a back door or the like when closed.

[0002]

2. Description of the Related Art A rotatable claw urged by a spring in a striker releasing direction and having a locking locking portion and a striker holding engaging portion facing the slit is provided on a base portion having a striker insertion slit. 2. Description of the Related Art A door latch device for an automobile, which is provided with a locking lever that is displaced to a locking position or an unlocking position with respect to the locking portion and that can hold or release a striker, is known.

By the way, this type of door latch device includes:
Normally, the striker is completely fixed at the time of latching, and is provided with a rattling preventing mechanism for preventing rattling when the vehicle is running.

Conventionally, most of the backlash preventing mechanism in the door latch device employs a structure in which a striker is pressed by a wedge member.
No. 1741 discloses that an overrun stopper made of an elastic material such as rubber for preventing the striker from overrunning at the time of door latching is extended to a rear portion of the wedge member, and a surface of the extension portion facing the rear surface of the wedge member. A door latch device that integrally forms a return reaction force applying portion that elastically deforms by sliding the wedge member when the door latch is actuated by contacting the rear surface of the wedge member, thereby reducing the number of parts and simplifying the assembling work. Is disclosed.

[0005]

However, the rattling prevention mechanism in the conventional door latch device, including the illustrated conventional door latch device, pushes the striker in one direction (perpendicular to the direction in which the striker enters) by a wedge member. The wedge function is used as it is. Therefore, there is a problem that the bias of the stress is generated, the movement and the locked state of the wedge member become unstable, and it cannot be used in a so-called double-claw type door latch device in which the claws are arranged symmetrically.

The present invention solves the problems existing in the prior art as described above, and realizes a smooth movement and a stable lock state, and can effectively prevent a double-claw type backlash and reduce the number of parts. It is an object of the present invention to provide an automobile door latch device in which the mechanism is simplified.

[0007]

According to the present invention, springs 6 and 7 are provided on a base 2 having a slit 3 for inserting a striker.
And a pair of rotatable left and right claws urged in the striker releasing direction and having striker retaining engaging portions 4p and 5p facing the locking locking portions 4s and 5s and the slit 3.
4 and 5, and a locking lever 8 which is displaced to a locking position Ps or a locking release position Po with respect to the locking portions 4s and 5s, to thereby hold or release the striker S. In doing
In particular, the base 2 is parallel to the longitudinal direction of the slit 3.
Guide recess 25 having rail portions 26 and 27
Face this guide recess 25 in the longitudinal direction of the slit 3,
The shape is such that the middle position is narrower than the width of the slit 3.
A striker regulating member 9 having a substantially V-shaped notch engaging portion 10 is slidably loaded, and the regulating member is
9 is provided with a backlash prevention mechanism M that urges the spring 9 toward the striker S by a spring 11 .

[0008]

According to the door latch device 1 of the present invention, when the striker S enters the slit 3, it engages with the engaging portions 4p and 5p of the claws 4 and 5, and the claws 4 and 5 Is rotated and displaced against the elastic force of. When the locking lever 8 is displaced to the locking position, the biased locking lever 8 is displaced to the locking position Ps,
And the locking portions 4s, 5s of the claws 4, 5 are locked together. That is, the striker S is held (latched) by the door latch device 1.
Is done.

The striker S engages with the notch engaging portion 10 of the regulating member 9 in the play prevention mechanism M, and the regulating member 9 moves in parallel with the striker S. Control member 9
Is biased by the spring 11, so that the striker S
And the notch engaging portion 10 are pressed against each other, and since the notch engaging portion 10 is formed in a substantially V shape, the position of the striker S is regulated in the left-right direction and the front-back direction, respectively. As a result, rattling is prevented, and the striker S is stably held at the center position of the slit 3. And such a play prevention mechanism M functions by one regulating member 9 and one spring 11.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments according to the present invention will now be described in detail with reference to the drawings.

First, the structure of the door latch device 1 according to the present invention will be described with reference to FIGS.

The door latch device 1 is provided, for example, at the tip of a back door D of an automobile C shown in FIG. A striker S is provided at the rear of the corresponding vehicle body B. As shown in FIGS. 1 to 3, the door latch device 1 includes a base body 2 a fixed to the back door D side and a base cover 2.
b, and a base body 2a and a base cover 2b are provided with U-shaped striker insertion slits 3, respectively. Further, on both sides of the slit 3 between the base body 2a and the base cover 2b, support shafts 21 and 22 are provided.
The claws 4 and 5 are rotatably mounted via the respective members.
Locking portions 4s, 5s and striker holding engaging portions 4p, 5p facing the slit 3
Are formed respectively. Then, the claws 4 and 5 are urged by springs 6 and 7 in a direction to release the striker S. Furthermore, the base body 2a and the base cover 2b
Between them, one end of the locking lever 8 is rotatably mounted via a support shaft 23, and the other end of the locking lever 8 is urged by a spring 24 so as to abut against the peripheral edges of the claws 4, 5.

The base body 2a has a backlash prevention mechanism M.
Is arranged. That is, a guide recess 25 having the slit 3 at the center is formed in the base body 2a.
Then, a striker restricting member 9 shown in FIG. 5 which is integrally formed into a rectangular shape by a synthetic resin or the like is slidably loaded. In this case, rail portions 26 and 27 parallel to the longitudinal direction of the slit 3 are provided on both sides of the guide concave portion 25, and on the other hand,
Engagement pieces 28 and 29 are provided on both left and right sides of the regulating member 9 to engage with the rails 26 and 27. The regulating member 9 has a substantially V-shaped notch engaging portion 10 at the center of the front end thereof, and has an engaging concave portion 30 of the spring 11 at the center of the rear end, and restricts between the engaging concave portion 30 and the base body 2a. The spring 11 for urging the member 9 toward the striker S is compressed. In addition, 3
Reference numerals 1 and 32 denote dampers.

Next, regarding the function of the door latch device 1,
This will be described with reference to FIGS.

First, it is assumed that the striker S is released from the door latch device 1, that is, the back door D is open. In this case, as shown in FIG. 2, the claws 4 and 5 are at positions where the strikers S are released by the biasing action of the springs 6 and 7. Further, since the locking lever 8 is at the lock release position Po, the lock between the locking portions 4s, 5s and the locking lever 8 is released, and the regulating member 9 is displaced by the spring 11 to the most advanced position.

Now, when the back door D is closed from this state, the striker S enters the slit 3, and the claw 4,
5 are engaged with the engaging portions 4p, 5p, and the claws 4, 5 are rotationally displaced against the elasticity of the springs 6, 7.
When the claws 4 and 5 are displaced to the lock position, the locking lever 8 is displaced to the lock position Ps, and
s, 5s and the tip of the locking lever 8 are locked. As a result, the claws 4, 5 are locked in the locked position, and FIG.
And the state shown in FIG.

When the striker S enters, the striker S and the notch engaging portion 10 of the regulating member 9 are locked, and the regulating member 9 is pushed. In this case, the regulating member 9 moves parallel to the moving direction of the striker S, and the striker S
By p and 5p, it is stably held at the center of the slit 3.
Moreover, since the striker S is pressed in the longitudinal direction of the slit 3 by the notch engaging portion 10 having a substantially V shape, the position of the striker S is restricted in both the left-right direction and the front-rear direction, and rattling is effectively prevented. .

On the other hand, when the back door D is opened from this state, if the locking lever 8 is forcibly displaced to the unlocking position Po by operating an operation lever or the like (not shown), the claws 4 and 5 7 and 11 displaces rotationally in the striker releasing direction. Thereby, the striker S is released, and the back door D opens.

The embodiment has been described in detail above.
The present invention is not limited to such an embodiment.
For example, the V-shape is not limited as long as it has a notch edge inclined left and right . In addition , details, configurations, shapes, and the like can be arbitrarily changed without departing from the gist of the present invention.

[0020]

As described above, the vehicle door latch device according to the present invention has the base portion parallel to the longitudinal direction of the slit.
A guide recess having a rail portion serving as
The recess faces the longitudinal direction of the slit and the middle position is
A load having a substantially V-shaped notch engaging portion formed so as to be smaller than the width of the lit , and the regulating member
As a result, the following remarkable effects can be obtained.

The restricting member moves in parallel with the striker, and the striker is held at the center of the slit by the substantially V-shaped notch engaging portion, so that a smooth movement of each part and a stable locked state can be realized.

In particular, it is possible to achieve effective play prevention in a double-claw type door latch device.

The number of components constituting the backlash prevention mechanism is only two, which can contribute to simplification of the mechanism by reduction in the number of components, and further to simplification of assembly and cost reduction.

[Brief description of the drawings]

FIG. 1 is a front view of a door latch device according to the present invention with a base cover removed when locked.

FIG. 2 is a front view of the door latch device with a base cover removed when unlocking the door latch device.

FIG. 3 is a sectional plan view of the door latch device;

FIG. 4 is an enlarged front view of a play preventing mechanism in the door latch device.

FIG. 5 is a perspective view of a striker regulating member in the door latch device.

FIG. 6 is a partial side view of an automobile provided with the door latch device;

[Explanation of symbols]

REFERENCE SIGNS LIST 1 door latch device 2 base portion 3 striker insertion slit 4 claw 5 claw 4 s lock engagement portion 5 s lock engagement portion 4 p striker retention engagement portion 5 p striker retention engagement portion 6 spring 7 spring 8 locking lever 9 striker Regulating member 10 notch engaging portion 11 spring 25 guide concave portion 26 rail portion 27 rail portion S striker M rattling prevention mechanism

Continuation of the front page (56) References JP-A-2-300484 (JP, A) JP-A 62-56667 (JP, U) JP-A 62-56668 (JP, U) JP-A 63-27667 (JP, U.S.A.) , U) Fully open sho 58-181768 (JP, U) Real open sho 63-46565 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A slit for inserting a striker.(3)Have
Base(2)To the spring(6,7)By strike
Locking part urged in the Leica release direction and locking(4
s, 5s)And the slit(3)Strike Ho
Durable engagement part(4p, 5p)With rotatableLeft and right pair
ofClaw(4,5)And the locking portion(4
s, 5s)Locking position for(Ps)Or unlocked position
(Po)Locking lever displaced to(8), And
Trica(S)Of a motor vehicle configured to be releasable or
Door latch device(1)In the base portion(2)
ToSaidslit(3)Longitudinal direction ofRail parallel to
Providing a guide recess (25) having portions (26, 27);
This guide recess (25) has a longitudinal portion of the slit (3).
And the middle position is the width of the slit (3).
Formed to be narrowerSubstantially V-shaped notch engagement part(1
0)Limiting member for striker having(9) slide itself
And the regulating member (9) is
(11) to the striker (S) sideRattling
Stop mechanism(M)A door door for a vehicle, comprising:
Switch device.