RU2243710C1 - Method for assembling of safety belt lock - Google Patents

Abstract

FIELD: assembling of passive safety devices.

SUBSTANCE: method involves providing safety casing made in the form of integral plastic part. Method does not require changing of lock construction, with front end of tie-rod being arranged inside protective casing.

EFFECT: simplified method and increased efficiency.

2 cl, 7 dwg

Description

The invention relates to devices for passive safety of automobiles and relates to a method for assembling a seat belt lock.

From the description of the patent RU 2069525 A 44 B 11/00, a lock is known consisting of interlocking detachable parts in the form of a tongue with an eye under the strap and an opening at the plug-in end, as well as a receiving part in the form of the lock itself. The castle contains:

- U-shaped cross-section of the clip, which forms the input channel for the inserted end of the tongue, and at the rear end of the clip made a hole for fastening with the front end of the rod, which serves to secure the lock in the body;

- a latch rotatably mounted in a clip with the possibility of its interaction and closure with the hole of the tongue when it is inserted into the input channel of the tongue;

- spring loaded tongue ejector;

- a spring-loaded movable latch to lock the latch in the closed position, while the latch is mounted on a support bracket, which is riveted with the rear end of the cage and with the front end of the rod;

- a button for opening the lock by moving the latch button.

The above details make up the locking mechanism of the lock, which in turn is firmly closed by the protective case. The locking mechanism, together with the rod fixed to the clip, is made in such a way that the entire set is operational and functions correctly without the presence of a protective housing on it. In normal execution, the protective casing is made of two halves that are ultrasonically welded during installation. The present invention also contains the possibility of using a protective housing made in the form of a one-piece plastic part, i.e. one-piece protective housing. This embodiment is more durable and cheaper to manufacture. In case of simple configurations (bends) of the rod, the mechanism set together with the riveted rod can be passed through the integral protective housing and fixed. However, there is a large number of execution forms of traction, which does not allow the assembly in this way. A solution to the problem is proposed in the patent DE-19805195 C2 (as well as in the patent RU 2125396 C1), in which it is provided to withdraw the end portion of the casing from the outside from the protective housing. The assembly of the lock in this case is as follows:

- the internal parts of the mechanism are mounted on a clip completely;

- the whole protective body is pushed and fixed on the received mechanism, thus forming an intermediate mounting unit, and finally, the mounting unit (end part of the cage) is fastened to the front end of the link and the attachment point is closed with a cover.

However, with this assembly method, a number of difficulties arise in design changes and cost increases that can only be avoided with full automation of production.

An object of the present invention is to provide a universal method for assembling a lock using a protective case made in the form of a solid plastic part (hereinafter referred to as a one-piece protective case), in which no change in the structure of the lock is required and in which the fastening of the front end of the rod remains inside the protective case.

This problem is solved in such a way that, according to the method of assembling the lock, the locking mechanism is mounted on which the protective housing is slid and the tie is fastened to the locking mechanism clip in such a way that the end of the locking mechanism clip and the support bracket of the spring retainer holder with the front end of the rod are riveted, then, the remaining parts are mounted on the clip of the locking mechanism, and the integral protective case is pushed and fixed onto the resulting mechanism with traction. In this case, an elastic deflection of the front of the bottom of the body occurs. The assembly of the lock according to the method in the case when the configuration of the rod interferes with the installation of a solid protective housing, is as follows. A correctly oriented end of the rod is drawn through the inside of the protective housing. The end of the rod is fastened with the end part of the clip of the locking mechanism and the support bracket of the spring retainer holder. The remaining parts of the locking mechanism are mounted on the clip of the locking mechanism. On the resulting locking mechanism with traction, a solid protective housing is pushed and fixed. In this case, an elastic deflection of the front of the bottom of the housing by 1-1.5 mm occurs.

The proposed method of assembling the castle according to the invention is illustrated by drawings.

Figure 1 - lock in the closed state, in plan, the protective housing is cut.

Figure 2 is a longitudinal section D-D of figure 1, the language is not shown.

Figure 3 - end view of the castle, the tongue is not shown.

Figure 4 is a General view of the castle with a simple draft in the assembly, the language is not shown.

Figure 5 is a view of a solid protective housing and the front part of the rod, which has a "complex configuration", passed through it.

In Fig.6 - the same as in Fig.5, however, at the front end of the rod fixed clip of the locking mechanism.

In Fig.7 - the same as in Fig.6, but on the clip of the locking mechanism, the remaining details of the locking mechanism are assembled, an integral protective housing before pushing onto the mechanism.

The lock (Fig. 1, Fig. 2) consists of language A, locking mechanism B and traction C. Inside the main part of the locking mechanism of the U-shaped clip of the locking mechanism 1, a rotary click 2, a spring retainer 3 of the retainer, a retainer 4, a tongue ejector 5 are mounted , opening button 6, the locking mechanism is closed by the protective housing 7. The final part of the cage together with the support bracket of the spring holder of the latch 8 is fastened with rivet 9 with the pull C. The opening button 6 is placed inside the inlet (figure 2) of the housing 7. Rear opening of the housing and serves to pass the post-riveting part of the rod C through the protective housing 7. The rod C contains an opening 101 for connecting to the clip of the locking mechanism 1 and an opening 102 for attaching the lock to the car body. When using the integral protective casing 7, the proposed method provides the possibility of pushing the mechanism B with the riveted rod C through the casing, overcoming at the moment of fixing the elasticity of the wall of the bottom of the casing so that the wall bends by 1-1.5 mm. Strong locking mechanism of the lock is provided by a ribbed locking barrier 10, made in front of the bottom of the protective housing. The surface of the barrier 10 has a relief shape, consistent with the shape of the front of the clip of the locking mechanism. When pushing the locking mechanism B into the protective housing in the final phase of advancement, the front edge of the clip of the locking mechanism 1 pops up by clicking on the ribbed barrier 10 and precisely fixes the position of the mechanism in the housing 7. The lock is assembled in the case when the tie configuration prevents the installation of the integral protective housing, as follows . The correctly oriented end of the rod C is passed through the inside of the protective housing 7, then the front end of the rod is riveted with the end part of the clip of the locking mechanism 1 and the support bracket of the spring holder of the latch. After that, the remaining parts of the mechanism are mounted on the clip of the locking mechanism and a solid protective housing is pushed and fixed on the resulting locking mechanism B with a pull C. In this case, an elastic deflection of the front of the bottom of the housing by 1-1.5 mm occurs. This completes the assembly of the castle.

Claims (2)

1. A method of assembling a vehicle seat belt lock, in which the mounted locking mechanism together with the attached rod is pushed through the front opening of the integral protective housing, the locking mechanism, due to the elastic deflection of the housing bottom, overcomes the ribbed locking barrier made in the front of the bottom, and at the moment of reaching its final the position by quickly returning the deflection is accurately fixed inside the protective housing, while for the location of the rivet the connection of the clip of the locking mechanism with the rod inside the integral protective housing, the thrust is pushed through the rear opening of the protective housing so that its front part comes out, then the clip of the locking mechanism, the rod and the support bracket of the spring holder of the clamp are fastened together and the remaining parts of the mechanism are assembled, after which the locking the thrust mechanism is pushed into the protective housing. 2. The method of assembling the lock according to claim 1, characterized in that the rivet fasten together the clip of the locking mechanism and traction.

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