JP2552209B2 - Abnormal noise prevention device in vehicle door 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 noise prevention device for a vehicle door lock device.

[0002]

2. Description of the Related Art Conventionally, a door lock main body a mounted on the door side, a striker b mounted on the vehicle body side, and a latch d having an engagement groove c of the striker b axially mounted on the door lock main body a. , A full ratchet f that engages a full engagement step e formed on the outer peripheral surface of the latch d to prevent reverse rotation of the latch d, and the full ratchet f contacts the outer peripheral surface of the latch d. Spring g that urges to
Those consisting of are known (see FIG. 1).

[0003]

In the known device, the claw portion h of the full ratchet f is engaged with the full engagement step portion e of the latch d to be fully locked. The claw portion h of the ratchet f for use hits the outer peripheral surface of the latch d, and tries to repel the full ratchet f against the elasticity of the spring g. Conventionally, a considerable noise was generated at this time.

[0004]

Therefore, according to the present invention, the door lock main body 1 attached to the door side, the striker 2 attached to the vehicle body side, and the door lock main body 1 pivotally attached to the door lock main body 1 by the shaft 8. Engagement groove 1 with which striker 2 engages
A latch 5 having 0 and a shaft 13 on the door lock body 1.
A full ratchet 7 that is pivotally mounted by the above-mentioned structure and that engages with a full engagement step 11 formed on the outer peripheral surface of the latch 5 to prevent the latch 5 from rotating in the reverse direction. In order to engage with the stepped portion 11, a spring 14 that always urges the latch 5 to come into contact with the outer peripheral surface of the latch 5 is provided around the outer peripheral surface of the shaft 13. The base portion 18 of the lever 17 is axially locked, and when the lever 17 is closed, it is pushed by the outer peripheral portion of the latch 5 by the rotation of the latch 5 to rotate in a fixed direction, and the spring 14 has one end thereof. For a vehicle in which 15 is locked at a desired position of the full ratchet 7 and the other end 16 is locked at the lever 17, so that the elasticity of the spring 14 is weak when the door is open and strong when the door is closed. Door lock device By providing a half-engaging step portion 9 on the noise prevention device and the latch 5, and by engaging with the half-engaging step portion 9 which is pivotally attached to the door lock body 1 by a shaft 12. This is a noise preventing device in a vehicle door lock device provided with a half ratchet 6 for preventing the latch 5 from rotating in the reverse direction.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 is a door lock main body attached to the door side of the vehicle, and 2 is a striker attached to the vehicle body side of the vehicle. The striker 2 is usually formed by a U-shaped rod. The main part of the door lock body 1 has a structure in which a latch 5, a half ratchet 6 and a full ratchet 7 are mounted in a recess 4 formed on the front side of a body 3 made of synthetic resin.

The latch 5 is provided with a shaft 8 by means of a shaft 8.
The latch 5 has a half engagement step portion 9 and an engagement groove 10 of the striker 2 on the outer peripheral surface thereof. Full engagement step 11
Is formed at the tip of the engaging groove 10. At the upper position of the recess 4, a half ratchet 6 that engages with the half engagement step portion 9 is formed.
Is provided, and a full ratchet 7 that engages with the full engagement stepped portion 11 is provided at a lower position of the recess 4. The half ratchet 6 is axially fixed to the door lock body 1 by a shaft 12,
The full ratchet 7 is fixed to the door lock body 1 by a shaft 13.

The pawl portion of the half ratchet 6 is constantly urged by a spring (not shown) in the direction of arrow A so as to always contact the outer peripheral surface of the latch 5. A spring 14 for urging the claw portion of the full ratchet 7 in the arrow B direction so as to abut the outer peripheral surface of the latch 5 is wound around the outer periphery of the shaft 13. One end 15 of the spring 14 is locked to a desired position of the full ratchet 7, and the other end 16 of the spring 14 is locked to an engaging projection 26 of a lever 17 axially attached to the shaft 13 (FIG. 4). 5).

A base portion 18 of the lever 17 is pivotally attached to a shaft 13, and a front end of the lever 17 extends so as to overlap the full engagement step portion 11 of the latch 5 in a door open state, and a tip end 19 thereof.
A protrusion 20 that contacts the outer peripheral edge of the latch 5 is formed.
That is, the lever 17 is formed in an overlapping state with the latch 5, and only the protrusion 20 contacts the outer peripheral edge of the latch 5.

Reference numeral 21 denotes a passage of the striker 2, and since the engaging groove 10 is formed, when the outer peripheral surface of the latch 5 at a position above the passage 21 is made the contact portion 22, the contact portion 22 is fully locked. Since it descends from the passage 21, the protrusion 20
Then, the lever 17 is rotated in the direction of arrow C as shown in FIGS. When the lever 17 rotates in the direction of arrow C, the elastic force of the spring 14 is strengthened by the action of the protrusion 25 of the lever 17.

[0010]

[Operation] Next, the operation will be described. Since the state before the striker 2 is engaged with the latch 5 is the door open state in FIG. 2, the abutting portion 22 on the outer periphery of the latch 5 is located above the passage 21. Is below the passage 21, and the two are separated from each other. Therefore, the lever 17 rotates clockwise in the direction opposite to the direction shown in FIG. Since the elasticity is extended and weakened, the part 23 of the full ratchet 7 abuts the rubber 24 with a weak force.

Next, when the door is closed in this state, the striker 2 advances in the striker passage 21 as shown by the arrow D,
As shown in FIG. 3, the latch 5 is engaged with the engaging groove 10 of the latch 5.
Is rotated counterclockwise about the shaft 8 to engage the claw portion 25 of the full ratchet 7 with the full engagement stepped portion 11 of the latch 5 to fully lock it. The claw portion 25 is located at the position a on the outer peripheral surface of the latch 5 (FIG. 2).
Upon hitting, the full ratchet 7 is tried to be flipped up against the elasticity of the spring 14.

Conventionally, at this time, a considerable noise was generated, but in the present invention, the full ratchet 7 is biased by the spring 14 having a weak force, so that the full ratchet 7 is generated.
The sound of flipping up is low, making it a high-class rock. After the door is closed, the contact portion 22 rotates the protrusion 20.
The lever 17 increases the elasticity of the spring 14 and can be locked completely.

[0013]

The door lock main body a mounted on the door side, the striker b mounted on the vehicle body side, and the latch d having the engagement groove c of the striker b pivotally mounted on the door lock main body a are conventionally used. A full ratchet f that engages with a full engagement step e formed on the outer peripheral surface of the latch d to prevent the latch d from rotating in the reverse direction, and the full ratchet f contacts the outer peripheral surface of the latch d. A device including a spring g that biases the members to make contact is known (see FIG. 1). In the known device, the claw h of the full ratchet f is latched by the latch d.
The full engagement stepped portion e of the full ratchet is fully locked, but a little before full locking, the claw portion h of the full ratchet f hits the outer peripheral surface of the latch d to resist the elastic force of the spring g. Attempt to flip up the ratchet f. Conventionally, a considerable noise was generated at this time. However, according to the present invention, the door lock main body 1 attached to the door side, the striker 2 attached to the vehicle body side, and the engagement groove axially attached to the door lock main body 1 by the shaft 8 to engage with the striker 2 are provided. Latch 5 having 10 and the door lock body 1
A full ratchet 7 which is pivotally mounted on the shaft 13 by a full engagement step portion 11 formed on the outer peripheral surface of the latch 5 to prevent reverse rotation of the latch 5, and a full ratchet 7 In order to engage with the full engagement stepped portion 11, a spring 14 is always urged to come into contact with the outer peripheral surface of the latch 5, the spring 14 being the shaft 13.
It is wound around the outer periphery of the lever, and the base portion 18 of the lever 17 is fixed to the shaft 13, and when the lever 17 is closed, it is pushed by the outer peripheral portion of the latch 5 by the rotation of the latch 5 and rotates in a fixed direction. And the spring 14 has one end 1
For a vehicle in which 5 is locked at a desired position of the full ratchet 7 and the other end 16 is locked at the lever 17 so that the elasticity of the spring 14 is weak when the door is open and strong when the door is closed. A half noise engaging step portion 9 is provided in the latch 5 and the abnormal noise preventing device in the door lock device, and is engaged with the half engaging step portion 9 by being pivotally attached to the door lock body 1 by a shaft 12. Since it is the noise prevention device in the vehicle door lock device provided with the half ratchet 6 for preventing the latch 5 from rotating in the reverse direction, the claw portion 25 of the full ratchet 7 is conventionally used when the door is closed.
Although it elastically abuts the outer peripheral surface of the latch 5 to generate a considerable noise, in the present invention, the one end 15 of the spring 14 is locked at a desired position of the full ratchet 7 but the other end 16 thereof. Is locked to the lever 17, and the lever 17 rotates in a direction to weaken the elastic force of the spring 14 when the door is opened, and to rotate in a direction to increase the elastic force of the spring 14 when the door is closed. Therefore, the rattling sound of the full ratchet 7 at the time of closing the door can be reduced, and a high-class lock can be obtained, and when the door is closed, the elasticity of the spring 14 can be strengthened to completely lock the door.

[Brief description of drawings]

FIG. 1 is a front view of a known example.

FIG. 2 is a front view of the door of the present invention in an open state.

FIG. 3 is a front view of a closed state of the present invention.

FIG. 4 is a front view of a lever.

FIG. 5 is a front view of a spring.

FIG. 6 is a front view of a full ratchet.

FIG. 7 is a right side view of FIG. 4.

[Explanation of symbols]

1 ... door lock body, 2 ... striker, 3 ... body, 4
... Recesses, 5 ... Latches, 6 ... Half ratchets, 7 ... Full ratchets, 8 ... Shafts, 9 ... Half engaging steps, 10 ...
Engagement groove, 11 ... Full engagement step, 12 ... Shaft, 13 ... Shaft, 1
4 ... Spring, 15 ... One end, 16 ... Other end, 17 ... Lever, 1
8 ... Base, 19 ... Tip, 20 ... Protrusion, 21 ... Passage, 22
... abutting part, 23 ... part, 24 ... rubber, 25 ... claw part, 26
... engaging protrusion.

Claims (2)

(57) [Claims] 1. A door lock body 1 mounted on a door side.
A striker 2 attached to the vehicle body side, a latch 5 axially attached to the door lock body 1 by a shaft 8 and having an engagement groove 10 with which the striker 2 engages, and a shaft 13 on the door lock body 1. A full ratchet 7 that is pivotally mounted by the above-mentioned structure and that engages with a full engagement step 11 formed on the outer peripheral surface of the latch 5 to prevent the latch 5 from rotating in the reverse direction. A spring 14 for urging the spring 5 so as to always come into contact with the outer peripheral surface of the latch 5 so as to be engaged with the joint portion 11.
Is provided by being wound around the outer periphery of the shaft 13, and the base portion 18 of the lever 17 is fixed to the shaft 13, and when the lever 17 is closed, it is pushed by the outer peripheral portion of the latch 5 by the rotation of the latch 5. The spring 14 is configured to rotate in a fixed direction.
The one end 15 is locked to a desired position of the full ratchet 7 and the other end 16 is locked to the lever 17, so that the elasticity of the spring 14 is weak when the door is open and strong when the door is closed. Noise prevention device in a door lock device for a vehicle. 2. The latch 5 according to claim 1, wherein the latch 5 is provided with a half engagement step portion 9, and the door lock body 1 is provided with a shaft 1.
A noise prevention device in a vehicle door lock device provided with a half ratchet 6 that is pivotally attached by 2 and that prevents the latch 5 from rotating in the reverse direction by engaging with the half engagement step portion 9.