JPH0288865A - Disengagement sound remover in locking device for vehicle - Google Patents

Abstract

PURPOSE:To remove a disengagement sound by installing a metallic coil torsion spring elastically preventing movement in the direction of disengagement from a ratchet interlinking stepped section. CONSTITUTION:One part of a cover plate 17 is bent inward, and faced to a recessed section 4, and a metallic coil torsion spring 16 is interposed between the cover plate 17 and a ratchet 3. The ratchet 3 is formed so as to be elastically mounted onto the outer circumferential surface of a latch 2 at all times by the elastic force of the metallic coil torsion spring 16, and the rebound of the ratchet 3 is suppressed. Since the elastic force of the metallic coil torsion spring 16 is hardly affected by a temperature, the effect of the elastic force of the torsion spring 16 is not changed. The sudden separation of a circular corner section 14 and a corner section 15 is prevented by the elastic force of the metallic coil torsion spring 16, thus obviating the generation of a disengagement sound.

Description

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

(Prior Art) The conventionally known Japanese Patent Application Laid-Open No. 62-72876 (same applicant) discloses a latch that rotates by engaging a striker b fixed on the vehicle body side with a lock body a fixed on the vehicle door side. C, a ratchet f which elastically engages with the full-lock engagement step d of the latch C by the action of a spring e to prevent the latch C from reversing; and the engagement step d of the ratchet) f. In the oven lever provided with an oven lever for releasing the engagement with the ratchet f, in addition to the spring e, there is an elastic force in the vicinity of the ratchet f that prevents the ratchet f from moving in the direction of disengagement from the engagement stepped portion d. A device for eliminating disengagement noise in a vehicle locking device is described, which includes a rubber damper g that prevents the ratchet 2 f from disengaging from the engaging step portion d. . h is a shaft, i is a pawl, j is a through hole, k is a half-flow engagement step, m is a striker entry groove, and n is a striker engagement groove.

(Problems to be Solved by the Invention) When the ratchet that is engaged in the full lock position is disengaged, the ratchet pops out, producing a disengagement sound. Those skilled in the art refer to this as a "barahun sound." It is easy to reduce the above noise, and the first step is to reduce it.
It would be better to strengthen the elasticity of the spring e shown in the figure, but this would have a negative effect, making it harder to release the ratchet and operate it.

In FIG. 1, this problem is solved by using a rubber damper g in addition to the spring e.

The effectiveness of the disengagement sound eliminating device in the known vehicle locking device may vary depending on the case. While investigating the cause, it was discovered that the effects differ depending on the season. That is, the elasticity of the rubber damper g may change slightly if there is a difference in temperature or temperature depending on the season. If the elasticity of the rubber damper g changes, it will affect the disengagement from the engagement step d.

The present invention has been developed based on the knowledge that the difference in temperature has an effect on the noise removal effect.

(Means for Solving the Problem) 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 full-lower lock 7 of the latch 2. a ratchet 3 that elastically engages with the engagement stepped portion 11 by the action of a spring arrangement to prevent the latch 2 from reversing; and an oven lever 18 that releases the engagement of the ratchet 3 with the engagement step 11.
In addition to the spring retainer, a metal coil torsion spring is provided near the ratchet 3 to elastically prevent the ratchet 3 from moving in the direction of disengagement from the engagement step portion 11. 16, the metal coil torsion spring 16 does not act when the ratchet 3 is in a fully locked state, and acts only when the ratchet 3 is fully unlocked. It is.

(Example) An embodiment of the present invention will be described with reference to the drawings.

1 is the lock body made of synthetic resin,
The body 1 is formed with four parts 4 for housing a tooth 2 and a ratchet 3.

5 is a striker fixed to the vehicle body side, 6 is a striker 5
It is a passageway.

The latch 2 is housed in the recess 4 and is pivoted by a shaft 7. Further, the ratchet 3 is pivotally mounted by a shaft 8. 9
is an engagement groove for the striker 5 formed on the outer peripheral surface of the latch 2, and is oriented to receive the striker 5 when the door is open.

Reference numeral 10 indicates a bar-lock engagement step formed on the outer periphery of the latch 2, and 11 indicates a full-lock engagement step, in which the engagement surface 13 of the ratchet 3 engages with the half-lock engagement step 10 and the full-lock engagement step 11. If it matches, it will be locked.

Reference numeral 12 denotes a ratchet, a spring that urges the engaging surface 13 of the tooth 3 to be pressed against the outer peripheral surface of the ratchet 2, 14 a circular arc corner of the full-lock engagement step 11, and 15 the engaging surface 13. This is the corner of the

Therefore, a part of the force plate 17 is bent inward to face the recess 4 as shown in FIG. 2, and a metal coil torsion spring 16 is interposed between the cover plate 17 and the ratchet 3. The ratchet 3 is formed so that it always snaps onto the outer peripheral surface of the latch 2 due to the elasticity of the metal coil torsion spring 16.
This prevents it from springing up. The metal coil torsion spring 16 may have its direction reversed.

The stopper n is formed so that it does not come into contact with the ratchet and the tooth 3 when fully locked.

In addition, 18 is the open lever, 19 is the protruding pin from the lock lever, and 20 is the open lever 18 and the lock lever.
21 is a window formed in the connecting piece, η
is a bottle that protrudes from the ratchet 3.

Furthermore, when the metal coil torsion spring 16 is installed in the state shown in FIG. 16 and the ratchet 3 move in the direction of the axis δ of the metal coil torsion spring 16 (in the direction of the arrow in FIG. 9), and the elasticity of the metal coil torsion spring 16 increases. When the metal coil torsion spring 16 is installed in the state shown in FIG. The contact point 24 of the ratchet 3 is located in a direction away from the axis δ of the metal coil torsion spring 16 (first
0), the elasticity of the metal coil torsion spring 16 becomes smaller.

(effect) Next, we will discuss the effect.

Since the present invention has the above configuration, when the door is open, the engagement groove 9 of the latch 2 is oriented to receive the striker 5fc (Fig. 3), and the engagement surface 13 of the ratchet 3 is connected to the spring 12 and the metal Due to the elasticity of the coil torsion spring 16, it strongly contacts the outer peripheral surface of the latch 2.

Then, when the door is closed, the striker 5 is moved to the engagement groove 9.
(Fig. 4), the latch 2 is rotated counterclockwise, and the engagement surface 13 of the ratchet 3 is engaged with the no-flock engagement step 10.
The latch 2 crosses over and engages with the full lock engagement step 11 to prevent the latch 2 from being reversed.

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 stepped portion 11, and finally only the arcuate corner portions 14 and corner portions 15 engage. (Figure 6).

In this state, the vehicle groove tries to open with a considerably strong force (approximately aoKg) due to the elasticity of the cushioning rubber (which also serves as waterproof and windproof) installed between the vehicle groove and the vehicle body. The arcuate corner 14 of the latch 2 is strongly reversed and the corner 1
5 begins to be forcefully pried open.

FIG. 8 shows the movement of the bin η in that case.

Therefore, the corner portion 15 is once separated from the arcuate corner portion 14 and then comes into impactful contact with the outer circumferential surface of the latch 2, which usually generates a considerably loud disengagement sound.
In the case of the present invention, since the metal coil torsion spring 16 is provided, the elasticity of the metal coil torsion spring 16 prevents the arcuate corner portion 14 and the corner portion 15 from coming apart;
Since the metal coil torsion spring 16 does not generate disengagement noise and its elasticity is not affected by temperature or temperature, its effect remains unchanged.

The metal coil torsion spring 16 is formed with a stopper n so that it does not come into contact with the ratchet 3 when fully locked. Since the latch 5 is formed so as to be activated when it comes off from the arcuate corner portion 14 of the latch 2, opening the door does not become difficult.

In the above case, when the metal coil spring 16 is installed in the state shown in FIG. The contact point 24 between the metal coil torsion spring 16 and the ratchet 3 is as follows.

The direction of the axis δ of the metal coil torsion spring 16 (the ninth
Since the ratchet 3 moves in the direction of the arrow in the figure, the elasticity of the metal coil torsion spring 16 becomes large and prevents the ratchet 3 from jumping out. Metal coil torsion spring 1 in the state shown in Figure 10
6 is installed, when the ratchet 3 moves from the engaging stepped portion 11 in the direction of disengagement (in the direction of arrow A in FIG. 10), the contact point 24 between the metal coil torsion spring 16 and the ratchet 3 is , the metal coil torsion spring 16
Since the nozzle moves in a direction away from the axis of the nozzle (in the direction of the arrow in Fig. 1O), the elasticity of the metal coil torsion spring 16 becomes small, and the nodle opening/closing operation becomes only momentarily heavy.
It has little effect on the feeling.

(Effects) As mentioned above, in the conventionally known Japanese Patent Application Laid-open No. 62-72876 (same applicant), a lock body a fixed to the vehicle door side engages with a striker b fixed to the vehicle body side. The rotating latch C and the full lock engagement step d of the latch C
A ratchet (f) that elastically engages with the action of a spring (e) to prevent the above-mentioned (7) C from reversing, and an open lever that releases the engagement of the ratchet (7) (f) with the engagement stepped portion (d). In addition to the spring e, the ratchet) f is located near the engagement step d at a position near the ratchet) f.
In a locking device for a vehicle, a rubber damper (g) is provided to elastically prevent the ratchet (f) from moving further in the direction of disengagement, thereby preventing impact noise when the ratchet (f) disengages from the engagement step (d). A device for eliminating stray sounds is described.

The effectiveness of the disengagement sound eliminating device in the known vehicle locking device may vary depending on the case. While investigating the cause, it was discovered that the effects differ depending on the season. That is, the elasticity of the rubber damper g may change slightly if there is a difference in temperature or temperature depending on the season. If the elasticity of the rubber damper g changes, it will affect the disengagement from the engagement step d.

However, 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 spring 12 acting on the full lock engagement stepped portion 11 of the latch 2. a ratchet 3 that elastically engages with the latch 2 to prevent the latch 2 from reversing; and an open lever 1 that releases the engagement of the ratchet 3 with the engagement stepped portion 11.
8, a metal coil is provided in the vicinity of the ratchet 7 3, in addition to the spring, to elastically prevent the ratchet 3 from moving in the direction of disengagement from the engagement step 11. A torsion spring 16 is provided, and the metal coil torsion spring 16 does not act when the ratchet 3 is in a fully locked state, and acts only when the full lock is released. (a) The elasticity of the metal coil torsion spring 16 prevents the arcuate corner portions 14 and the corner portions 15 from abruptly separating, thereby preventing the generation of disengagement noise.

B. A major problem can be easily solved by simply changing to a metal coil torsion spring 16.

C. When the metal coil torsion spring 16 is installed in the state shown in FIG. 24 moves in the direction in which the elasticity of the metal coil torsion panel 16 increases, thereby suppressing the ratchet 3 from jumping out.

2. When the metal coil torsion spring 16 is installed in the state shown in FIG. 24, the elasticity of the metal coil torsion spring 16 is reduced, and the opening/closing operation of the handle only becomes momentarily heavy and has little effect on the feeling.

This effect is achieved.

[Brief explanation of drawings]

Figure 1 is a diagram of a known example, Figure 2 is an exploded view of the main parts, Figure 3 is a partial vertical side view when the door is open, Figure 4 is a partial vertical side view when the door is closed, Figures 5 and 3 are Figure 6 is a diagram of the operating state, Figure 7 is a rear view of the whole, Figure 8 is a diagram of the operation of the pin when it is disengaged, and Figure 9 is a state in which the elasticity increases as the ratchet 2 moves in the direction of disengagement. Figure 1θ shows a state in which the elasticity decreases when the ratchet 2 moves in the direction of disengagement. Explanation of symbols 1... Body, 2... Latch, 3... Ratchet, 4... Recess, 5... Striker, 6... Passage,
7... Axis. 8... Shaft, 9... Engagement groove, 10... Half-lock engagement step, 11... Full-lock engagement step, 12...
Spring, 13... Engagement surface, 14... Arc corner portion, 15...
・・Corner part, 16 ・・Metal coil torsion spring, 17
...Cover plate, 18...Open lever, 1
9... Protruding pin, redundant... connecting piece, 21... window, η
...pin, n...stopper, 24...contact point,
3... Axis. Patent Applicant Mitsui Mining & Mining Co., Ltd. Figure 4 Figure 7 Procedural Amendment (White Hair), 4 1' December 1988

Claims (3)

[Claims] (1) A latch 2 that rotates when engaged with a striker 5 fixed to the vehicle body on a lock body fixed to the vehicle door side, and a spring 12 that provides elasticity to the full lock engagement stepped portion 11 of the latch 2. A ratchet 3 that engages with the latch 2 to prevent the latch 2 from reversing, and an open lever 18 that releases the engagement of the ratchet 3 with the engagement step 11. In addition to the spring 12, a metal coil torsion spring 16 is provided which elastically prevents the ratchet 3 from moving in the direction of disengagement from the engagement step portion 11. A disengagement sound eliminating device for a vehicle locking device that does not operate when the lock is in a fully locked state and operates only when the lock is fully unlocked. (2) In what is stated in claim (1),
The metal coil torsion spring 16 is a disengagement sound eliminating device in a vehicle locking device, in which the elasticity of the metal coil torsion spring 16 increases as the ratchet 3 moves from the engagement step portion 11 in the disengagement direction. (3) In what is stated in claim (1),
The metal coil torsion spring 16 is a disengagement noise eliminating device in a vehicle locking device, in which the elasticity of the metal coil torsion spring 16 decreases as the ratchet 3 moves from the engagement step portion 11 in the disengagement direction.