JPH0380233B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a disengagement sound eliminating device in a vehicle lock device.

(Prior art) Conventionally, a lock body fixed to the vehicle door side has a latch B that rotates by engaging with a striker F fixed to the vehicle body side, and a half-lock engagement step J and a full-lock engagement step of the latch B. A locking device for a vehicle is known that is provided with a latch D that engages with the latch B to prevent the latch B from being reversed, and an open lever that releases the engagement of the latch D with the engagement steps J and K (see No. 6). figure). In the figure, A is the body made of synthetic resin, C is the axis of latch B, E is the axis of latch D, G is the engagement groove of latch B, H is the engagement claw of latch D, and I is latch D. It is a spring that biases the

(Problems to be Solved by the Invention) One of the problems with the known vehicle lock device is that when the full-lock engagement step K of the latch B and the engagement pawl H of the latch D disengage, the This can cause a loud disengagement sound.

That is, cushioning rubber is attached to a normal vehicle door. When the door is closed, the cushioning rubber attached to the edge of the door is compressed. Furthermore, as the door is closed, the latch B attached to the door engages with the striker F and rotates in the direction of arrow A, causing the engagement pawl of the latch D to engage the full-lock engagement step K of the latch B. H is engaged and locked.

When the open lever is operated to open the door in order to release this lock, the engaging pawl H of the ratchet D is disengaged from the full lock engaging stepped portion K and the lock is released, but as shown in Fig. 8, the engaging pawl H At the moment when the door is disengaged from the full lock engagement step K, the shock absorbing rubber of the door, which had been compressed until then, expands rapidly.
A strong reversing force acts on latch B, causing it to reverse at a considerable speed.
The two separate, and then the two come into contact. At that time, a disengagement sound is generated.

According to experiments, the above-mentioned disengagement noise can be eliminated by slowing down the movement of the ratchet D. That is, when the latch D is pressed down with the fingertips to unfit and unfit, the phenomenon that the latch D and the latch B are separated at any moment disappears, and almost no noise is generated when the latch D and latch B come apart.

That is, if the spring I is made stronger, the sound of the spring I coming off can be reduced, but if the spring I is made stronger, it cannot be easily fitted, so the present invention takes a separate method.

(Means for Solving the Problems) Therefore, the present invention provides a lock main body fixed to the vehicle door side, a latch 2 that rotates by engaging with a striker 5 fixed to the vehicle body side, and a full locking mechanism of the latch 2. A ratchet 3 that elastically engages with the engagement step 11 by the action of a spring 12 to prevent the latch 2 from reversing, and an open lever 18 that releases the engagement of the latch 3 with the engagement step 11 are provided. In this case, a damper 16 is provided in the vicinity of the ratchet 3, in addition to the spring 12, to elastically prevent the ratchet 3 from moving in the direction of disengagement from the engagement step portion 11, and This is a disengagement sound eliminating device for a lock device for a vehicle, which prevents the impact noise caused by disengagement from the engagement step portion 11 of No. 3.

(Example) An example of the present invention will be described with reference to the drawings.
The body 1 of the lock is made of synthetic resin, and the body 1 is formed with a recess 4 in which a latch 2 and a latch 3 are accommodated. 5 is a striker fixed to the vehicle body side, and 6 is a passage for the striker 5. The latch 2 is housed in the recess 4 and is connected to the shaft 7.
It is pivoted by. Further, the ratchet 3 is connected to the shaft 8.
It is pivoted by. Reference numeral 9 denotes an engagement groove for the striker 5 formed on the outer circumferential surface of the latch 2, which is oriented to receive the striker 5 when the door is open. 10 is a half-lock engagement step formed on the outer periphery of the latch 2, 11 is a full-lock engagement step, and the engagement surface 13 of the latch 3 is connected to the half-lock engagement step 1.
0. Full lock When engaged with the stepped portion 11, it is locked. 12 is a spring that always urges the engagement surface 13 of the latch 3 to be pressed against the outer peripheral surface of the latch 2; 14 is an arcuate corner portion of the full lock engagement step portion 11;
15 is a corner of the engagement surface 13.

A part of the cover plate 17 is bent inward to face the recess 4 as shown in FIG. 1, and a damper made of rubber or metal is inserted between the cover plate 17 and the ratchet 3. 1
6, and the ratchet 3 is connected to the damper 1.
The latch 3 is formed so that it always snaps onto the outer circumferential surface of the latch 2 due to the elasticity of the latch 3, thereby slowing down the movement of the latch 3.

18 is an open lever, 19 is a pin protruding from the lock lever, 20 is a connecting piece connecting the open lever 18 and the lock lever, 21 is a window formed in the connecting piece 20, and 22 is a pin protruding from the ratchet 3.

(effect) Next, we will discuss the effect.

Since the present invention has the above structure, when the door is open, the engagement groove 9 of the latch 2 is oriented to receive the striker 5 as shown in FIG.
The engaging surface 13 of is in strong contact with the outer peripheral surface of the latch 2 due to the elasticity of the spring 12 and the damper 16.

When the door is closed, the striker 5 engages the engagement groove 9 and rotates the latch 2 counterclockwise as shown in FIG. It engages with the engagement step 11 and prevents the latch 2 from being reversed.

Next, when the open lever 18 is operated to open the door, the engagement surface 13 of the ratchet 3 gradually disengages from the full lock engagement step 11, and finally the fifth
As shown in the figure, only the arcuate corners 14 and 15 are engaged. In this state, the vehicle door attempts to open with a considerably strong force (40Kg) due to the shrinking rubber elasticity attached to the inner surface of the edge of the door, so the arcuate corner 14 of the latch 2 The door is strongly reversed, the corner 15 is forcefully pried, and the door is opened.

FIG. 10 shows the movement of the pin 22 in that case.

Therefore, the corner portion 15 suddenly becomes the arcuate corner portion 14.
Since the latch 2 is separated from the latch 2 and then comes into contact with the outer circumferential surface of the latch 2, a fairly large disengagement sound is normally generated. However, in the case of the present invention, since the damper 16 is provided, the damper The elasticity of the corner portion 16 prevents the arcuate corner portion 14 and the corner portion 15 from coming apart, thereby preventing the generation of disengagement noise.

(Effects) As described above, conventionally, a lock main body fixed to the vehicle door side has a latch B that rotates by engaging with a striker F fixed to the vehicle body side, and a half-lock engagement step J and a full lock of the latch B. Engagement step K
A locking device for a vehicle is known which is provided with a latch D that engages with the latch B to prevent the latch B from being reversed, and an open lever that releases the engagement of the latch D with the engagement steps J and K. One of the problems with the above-mentioned known vehicle locking device is that when the full lock engagement stepped portion K of the latch B disengages from the engagement pawl H of the latch D, a considerably loud disengagement sound is generated. Can be mentioned. That is, cushioning rubber is attached to a normal vehicle door. When the door is closed, the cushioning rubber attached to the edge of the door is compressed. Also,
When the door is closed, the latch B attached to the door engages with the striker F and rotates in the direction of arrow A, so that the engagement pawl H of the latch D engages with the full lock engagement step K of the latch B. engaged and locked. When the open lever is operated to open the door in order to release this lock, the engaging pawl H of the ratchet D is disengaged from the full lock engaging stepped portion K and the lock is released, but as shown in Fig. 8, the engaging pawl H At the moment when the latch B is released from the full lock engagement step K, the shock absorbing rubber of the door, which had been compressed until then, expands rapidly, and a strong reversing force acts on the latch B, causing it to reverse at a considerable speed. , when the latch D and latch B separate, and then they come into contact. At that time, a disengagement sound is generated. According to experiments, the above-mentioned disengagement noise can be eliminated by slowing down the movement of the ratchet D. That is, when the latch D is pressed down with the fingertips to unfit and unfit, the phenomenon that the latch D and the latch B are separated at any moment disappears, and almost no noise is generated when the latch D and latch B come apart. That is, if the spring I is made stronger, the sound of the spring I coming off can be reduced, but if the spring I is made stronger, it cannot be easily fitted, so the present invention takes a separate method.

Therefore, the present invention provides a lock body fixed to the vehicle door side, a latch 2 that rotates by engaging with a striker 5 fixed to the vehicle body side, and a spring 12 for the full lock engagement stepped portion 11 of the latch 2. The latch 3 is provided with a latch 3 that elastically engages with the latch 2 to prevent the latch 2 from reversing, and an open lever 18 that releases the latch 3 from meshing with the engagement step 11. In addition to the spring 12, a damper 16 is provided to elastically prevent the ratchet 3 from moving in the direction of disengagement from the engagement step 11, and the This is a disengagement noise eliminating device in a vehicle locking device that prevents impact noise when disengagement occurs. (a) Due to the elasticity of the damper 16, the circular arc corner portion
4 and a corner part 15 are prevented from abruptly separating, and a disengagement sound is not generated.

(b) When making the spring 12 stronger, it is not easy to fit it in, but since the damper 16 is provided separately, installation is easy.

C. It can be implemented at low cost.

This effect is achieved.

[Brief explanation of drawings]

Figure 1 is an exploded view of the main parts, Figure 2 is a partially vertical side view when the door is open, Figure 3 is a partially vertical side view when the door is closed,
Figures 4 and 5 are enlarged views of main parts, Figures 6 to 8 are known examples, Figure 9 is a rear view of the whole, and Figure 10 is an enlarged view of the main parts.
The figure shows the operation of the pin when it is out of engagement. Explanation of symbols 1...Body, 2...Latch, 3...Ratchet, 4...Recess, 5...Striker, 6...Passage, 7...Shaft, 8...Shaft, 9...Engagement groove, 10...Half lock engagement step, 11 ...Full lock engagement stepped portion, 1
2... Spring, 13... Engaging surface, 14... Arc corner, 15
... corner, 16 ... damper, 17 ... cover plate, 18 ... open lever, 19 ... protruding pin, 2
0...Connecting piece, 21...Window, 22...Pin, A...Body, B...Latch, C...Shaft, D...Latch, E...
Shaft, F...Striker, G...Engagement groove, H...Engagement surface,
I...Spring, J...Half lock engagement step, K...Full lock engagement step, L...Distance.

Claims (1)

[Claims] 1 A latch 2 that rotates when engaged with a striker 5 fixed to the vehicle body side is attached to a lock body fixed to the vehicle door side, and a latch 2 is elastically engaged with a full lock engagement stepped portion 11 of the latch 2 by the action of a spring 12. A latch 3 that prevents the latch 2 from reversing, and an open lever 18 that releases the latch 3 from meshing with the engagement step 11.
In addition to the spring 12, a damper 16 is provided near the ratchet 3 to elastically prevent the ratchet 3 from moving in the direction of disengagement from the engagement step 11. A disengagement sound eliminating device in a lock device for a vehicle that prevents impact noise when disengagement occurs from a joint part 11.