FR2509147A1 - BELT CLOSURE FOR A SAFETY BELT ASSEMBLY - Google Patents

Abstract

CLASP FOR SEAT BELT SET. THE CLASP ACCORDING TO THE INVENTION IS CHARACTERIZED IN PARTICULAR BY A LOCKING MADE BY A LOCKING BODY INSIDE THE BODY OF THE CLOSER, SUBJECT TO AN ELASTIC PRE-STRESS, AND COMMANDED BY A LOCKING BUTTON 3 IN THE SHAPE OF A LANGUETTE QUTIASET QUTIAS TOWARDS THIS LOCKING BODY WHEN PRESSURE IS EXERCISED. THIS CLOSURE IS INTENDED TO REDUCE THE COST OF MOTOR VEHICLE DRIVERS 'SAFETY BELT KITS WITHOUT COMPROMISING THEIR RELIABILITY.

Description

The present invention relates to a clasp for

  seems to seat belt, consisting of a clasp body surrounded by a plastic casing to be joined at one end of a strap and a tongue to be joined at the other end of this strap, which can be introduced by the front in the body of the clasp, in order to be locked through an organ

  blocking, subjected to elastic prestressing, to

  the body of the clasp, this lock being

  suppressed by exerting pressure on a

  acting on the blocking member.

  Known plastic housings for the belt clasps in question have a recess

  relatively large for the trigger key

  This button is manufactured separately and placed in said recess in such a way that it can not fall. This embodiment of the box with separate release button

has various disadvantages.

  Manufacturing is on the one hand relatively expensive

  since separate injection molds are required

  both for the casing and for the release button It is also necessary to provide a return spring

  for the trigger key to bring this key back

  to its starting position The mounting of the key and

  its recall spring requires a number of hours of

  appropriate, which can be considered relatively

  important because this is a mass-produced article.

  Since in the end it is necessary to avoid

  mitufs of safety of operation a jamming of the trigger button, it is necessary to choose for this reason a

  amplitude of the movement of the key, compared to the

  provided for the latter in the shoemaker, sufficiently

  large, which, however, runs the risk of fouling

  which in turn may compromise the functioning of the

absolutely impeccable.

  The subject of the present invention is the improvement of a belt clasp of the type in question for

  seat belt assemblies, which may be manufactured

  more simply and cheaply while preserving

  safe operation. We reach, to reach this object, the clasp of

  mentioned in the preamble, the improvement

  both in that the release button on the casing surrounding the body of the clasp is in the form of a tongue, and is elastically movable in the direction

  of the locking member when applying a pressure.

  This solution makes possible an appreciable decrease

  the cost of manufacturing because we no longer have

  need only one injection mold, which

  This allows the casing to be shaped at the same time as the activation of the release button as an integrated element.

  the plastic material a material with elasticity

  sufficient clearance, it is also possible to suppress the return spring as such and therefore also its mounting is also made a simplification of the assembly

  by deleting the separate trip key.

  Finally, the risk of clogging of the clasp elements is diminished since the trigger key now in place is provided with a narrow seat.

in his holster recess.

  The invention will be described in more detail with reference to the appended drawing, which is in no way limitative, and in which: FIG. 1 represents a longitudinal section of the building block of the invention with the clasp placed in

closing position.

  FIG. 2 represents a plan view of the belt clasp and its housing, the clasp tongue being

however not shown.

  C 5 According to Figure 1, the belt clasp shown is constituted by the clasp body 1, which is fixed inside a casing 2 made of plastic material having a release button 3, by a tab 4 clasp to introduce from a narrow side in the

  body of the clasp, by an ejector plate 5 of the lan-

  watch for the clasp mounted to move lengthwise in the body of the clasp, by an angular corrugated pivoting bolt 6 serving as locking member, which can pivot with one of its ends near the short side ( belt side) of the body of the clasp around an axis lying in its plane and which penetrates by its other end into the tongue 4 of the clasp, and by a spring 7 blades acting as a return spring, which is based a c 8 tee on the body 1 of the clasp and is applied to the other c 8 té by being able to slide against the underside of the pivoting bolt 6 to hold the latter, at rest, in the closed position Tab 4 of the clasp constituted by a metal plate, comprises, at the end of the belt, a lining 8 of plastic adapted to the casing 2 and to which the strap is connected.

  usual (not shown) In the closed position

  According to FIG. 1, the tab 4 of the clasp is supported by its front edge 4a against a portion facing it with an edge 5a of the ejection plate 5, said plate 5 being supported. on the other hand against a spring and the lock 6, while the spring 10 is supported

  also, on the other hand against the spring 10.

  The latch 6 extending in the direction of the length of the clasp is constituted by a bent metal strip and has on each of its two sides a pin 11 for the pivot bearing corresponding, these two

  trunnions being arranged between the plates 12, 13

  The region of the end of the side to be inserted in the latch 6 is hook-shaped and penetrates into a recess 4b of the tongue.

4 of the clasp.

  The tripping button 3 is tongue-shaped and mounted on the plastic casing, the upper face of the casing made by injection grinding having a narrow slot 14 U-shaped The material of the casing 1 has the necessary permanent elasticity ,

  so that the trigger button in the form of

  The gauge returns automatically, by its own elasticity, to its initial position. If the triggering button is pressed in the direction exerted by the arrow 1, this key is moved down towards the locking member 6. and separates it, if

  the pressure of the tongue 4 of the clasp is increased.

  This tongue 4 is then separated from the body 1 of the clasp

  by the ejection spring 10 When the pressure

  sion, the distorted trigger button returns to its

starting form.

  To better eliminate any risk of breakage of the tab-shaped release button, the regions

  near the end of the key can be

  rounded The plastic material used for casing 2, including the tongue, is a copolymer that can be both low-pressure polyethylene and polyethylene

high pressure.

  It goes without saying that the present invention has not been described.

  as an indicative and non-exhaustive guide and that it is

  susceptible of various variants without departing from its framework.

Claims (1)

CLAIM   Clasp for a seatbelt assembly,   staggered by a clasp body surrounded by a plastic casing to be joined at one end of a strap and a tab to be joined at the other end of this strap, which can be inserted from the front into the clasp body so to be locked via   blocking device, subjected to an elastic prestressing   inside the body of the clasp, this locking being removable by exerting pressure on a   triggering button acting on this blocking member   characterized in that said trigger key   (3) is placed on the housing (2) in plastic material.   tick surrounding the body (1) of the clasp in the form of a tongue, and can move elastically towards the locking member (6) by applying a pressure.