JPH06524Y2 - Lock silencer - Google Patents

Description

[Technical Field] The present invention relates to a lock device used for a vehicle door or the like, and more particularly to a muffling device for canceling the sound generated by the engagement between the hook and the ratchet and the rotation of the ratchet. .

"Prior Art and its Problems" This type of locking device generally has a door as an opening / closing body,
A striker is fixed to either one of the vehicle to be opened and closed, and a hook and a ratchet are pivotally attached to the other. The hook holds or releases the striker, and the ratchet has a locking claw that engages with the lock part of the hook and a rotation range restricting claw, and holds the hook at the striker gripping position when these are engaged. . The lock is released by rotating the ratchet to a non-meshing position with the hook.

In this locking device, in order to reduce the sound generated when the ratchet and the hook are meshed with each other, conventionally, a resin material is attached to the meshing portion of the ratchet and / or the hook by insert molding. However, insert molding is expensive. For this reason, a structure in which a sound deadening material made of a resin material is fitted to the meshing portion has been proposed, but there is a problem that the structure that is simply fitted is likely to come off.

"Object of the Invention" In view of the problems of the conventional silencer of the locking device, the present invention aims to obtain a silencer which is not expensive like insert molding and in which the silencer material does not come off. To do. It is another object of the present invention to provide a muffling device which has a fitting structure in the assembly and does not cause the muffling material to come off.

[Outline of the Invention] The present invention relates to a ratchet having a locking claw that engages with a lock part of a hook and a rotation range restricting claw, and the contact part of the rotation range restricting claw with the hook is made of a synthetic resin material Based on the structure that the abutment silencer is fitted, the abutment silencer is connected to the abutment silencer in order to prevent the abutment silencer from coming off and to simultaneously mute the rotating shaft of the ratchet. Forming a sound deadening material further integrally provided with a shaft sound deadening part that is inserted into the shaft hole of the ratchet continuous through the part,
This sound deadening material is characterized in that the shaft sound deadening part can be inserted into the shaft hole only when the contact part sound deadening part is fitted to the rotation range restricting claw of the ratchet.

"Embodiment of the Invention" The present invention will be described below with reference to illustrated embodiments. First, referring to FIG. 4, the basic structure of the lock device to which the present invention is applied will be described. For example, the base plate 11 fixed to the vehicle body
Is formed with an entrance opening 12 of the striker 10 fixed to a door or a hood, and the ratchet 13 and the hook 14 are respectively positioned on the left and right of the entrance opening 12 and the shaft 1 is attached thereto.
It is pivoted at 5, 16. Ratchet 13 and hook 1
The springs 4 are urged to rotate in the clockwise and counterclockwise directions indicated by arrows in FIG. 4, respectively, by spring means (not shown). The hook 14 includes a lock concave portion 14a and a lock portion 14b, and the ratchet 13 has the lock portion 14a.
It has a locking claw 13a that engages with b and a rotation range restricting claw 13b.

In this locking device, when the door or the hood is closed, the striker 10 enters into the lock recess 14a of the hook 14 through the entrance opening 12 of the base plate 11, and the hook 14 rotates clockwise around the shaft 16 against the spring biasing force. Rotate to. When the hook 14 rotates a certain amount, the lock portion 14
The back surface of b presses the locking claw 13a of the ratchet 13 to rotate the ratchet 13 counterclockwise against the spring biasing force. Then, the lock portion 14b has the locking claw 13a.
If the ratchet 13 is overcome, the ratchet 13 is rotated clockwise by the urging force, and the rotation range restricting claw 13b is brought into collision engagement with the lock portion 14b. At this time, the locking claw 13a holds the mesh with the lock portion 14b. This is the locked state.

To release the lock, the ratchet 13 is rotated counterclockwise against its spring biasing force to release the engagement between the locking claw 13a and the lock portion 14b. Then, the hook 14 is rotated counterclockwise by the spring biasing force, the striker 10 held in the lock recess 14a is opened, and the door or the hood is opened.

The present invention is a locking device having the above basic functions,
In particular, the sound deadening structure on the ratchet 13 side is the gist. A sound deadening material 20 according to the present invention comprises a contact sound deadening part 21 fitted to a rotation range restricting claw 13b of a ratchet 13,
Shaft silencer 2 inserted into the shaft hole 13c of the ratchet 13
2 and a connecting portion 23 for connecting the abutting portion sound deadening portion 21 and the shaft sound deadening portion 22 are integrally formed from a synthetic resin material. The contact portion muffling portion 21 includes the rotation range restricting claw 13b.
The shaft muffling section 22 has a cylindrical shape along the inner circumference of the shaft hole 13c. The connecting portion 23 extends along one surface of the ratchet 13 and connects one side of the abutting portion sound deadening portion 21 in the shape of a rectangular tube to one end of the cylindrical shaft sound deadening portion 22.

This sound deadening material 20 is attached to the ratchet 13
As shown in FIG. 3, the contact portion muffling portion 21 is first fitted into the rotation range restricting claw 13b. At this time, the connecting portion 23
The elasticity of the shaft part silencer part 22 is allowed to escape from the shaft hole 13c of the ratchet 13. Then, when the shaft silencer 22 is fitted into the shaft hole 13c, the mounting on the ratchet 13 is completed. Due to the structure of the sound deadening material 20, when the shaft sound deadening part 22 is first fitted into the shaft hole 13c, the contact part sound deadening part 21 does not fit into the rotation range restricting claw 13b.

The ratchet 13 equipped with the sound deadening material 20 is pivotally mounted on the base plate 11 by a shaft 15. The shaft 15 has its head crimped, as shown in FIG.
The sound deadening material 20 is sandwiched between the ratchet 13 and the base plate 11. Therefore, in the assembled state,
There is no possibility that the muffling material 20 will come off.

The abutting part muffling part 21 of the muffling material 20 acts to soften the shock and sound when the rotation range restricting claw 13b of the ratchet 13 collides with the back surface of the lock part 14b of the hook 14, and also the shaft part muffling part. 22 serves to suppress the generation of abnormal noise when the ratchet 13 rotates and reduce the rotation resistance.

Although a cover 18 made of synthetic resin is separately provided on the hook 14 side, the sound deadening structure on the hook 14 side does not matter in the present invention. Further, the locking claw 13a and the lock portion 14b are in direct contact with each other in order to obtain a reliable locking action, and no silencing material is interposed.

"Effect of device" As described above, according to the silencer of the lock device of the present invention,
With a single sound deadening material made of a synthetic resin material, it is possible to deaden the sound of the turning portion of the ratchet and the turning range restricting claw portion that abuts the hook. The engagement structure between the sound deadening material and the ratchet is basically a fitting structure at two places, and there is no risk of disengagement in the fitted state.
Therefore, as compared with the conventional structure that is formed by insert molding, a device that is inexpensive and can expect a stable silencing effect can be obtained.

[Brief description of drawings]

1 shows an embodiment of a sound deadening device for a lock device according to the present invention. FIG. 1 is a perspective view of a ratchet mounted with sound deadening material, and FIG. 2 is a sectional view taken along line II-II of FIG. Three
The figure shows III-III of FIG. 1 showing the mounting procedure of the sound deadening material
Sectional drawing which follows the line, FIG. 4 is a top view of the whole locking device. 10 ... striker, 11 ... base plate, 12 ... entrance opening, 13 ... ratchet, 13a ... locking claw, 13b ... rotation range regulating claw, 13c ... shaft hole, 14 ... hook, 14a ...
Lock recess, 14b ... Lock part, 15, 16 ... Shaft, 20
... muffling material, 21 ... contact part muffling part, 22 ... shaft part muffling part,
23 ... Connection part.

Claims (1)

[Scope of utility model registration request] 1. A striker is fixed to one of an opening / closing body and an opened / closed body opened / closed by the opening / closing body, and to the other side,
A hook for gripping or releasing the striker, and a ratchet having a locking claw for engaging with the lock portion of the hook and a rotation range restricting claw for holding the hook at the striker gripping position when these are engaged are respectively pivoted. In the attached lock device, the contact part sound deadening part fitted to the ratchet rotation range restricting claw, the shaft part sound deadening part inserted into the shaft hole of the ratchet, and the contact part sound deadening part and the shaft part. A muffling material made of a synthetic resin material is integrally provided with a connecting part for connecting the muffling part, and the muffling material is provided with the muffling part of the contact part fitted to the rotation range restricting claw of the ratchet. A sound deadening device for a locking device, wherein a sound deadening part can be inserted into a shaft hole of a ratchet.