Buckles – buttons – clasps – etc. – Separable-fastener or required component thereof – Including member having distinct formations and mating...
Patent
1991-09-16
1992-11-24
Sakran, Victor N.
Buckles, buttons, clasps, etc.
Separable-fastener or required component thereof
Including member having distinct formations and mating...
24633, A44B 1125
Patent
active
051651505
DESCRIPTION:
BRIEF SUMMARY
The invention proceeds from a belt lock for belt retaining systems, comprising a closure mechanism and at least one belt strap end piece which is able to be inserted therein, in which a tongue, which is able to be locked with the closure mechanism, and a control member are provided, and in which the closure mechanism consists of a U-shaped metal frame with lateral recesses, in which a plate-shaped arresting element serving to lock the tongue of the end piece is mounted by means of pins, and in which the closure mechanism further comprises a spring-loaded ejector which comes into operative connection with the tongue, a spring-loaded arresting element support to secure at least the closed position of the arresting element and also a spring-loaded release button.
Such a belt lock is described in the EP 25 24 403. In this belt lock, an arresting element is used which must be manufactured very precisely to ensure that it constantly functions without problems, and which is thereby costly, which is further increased through the complicated three-dimensional design. In addition, the tensional forces of the belt act on the locking part of the arresting element as bending forces, which makes a construction of the arresting element with a corresponding bending cross-section necessary, and makes this therefore relatively bulky.
A belt lock of the above-mentioned type, likewise of very complicated construction, can also be seen from the EP-A-83 752.
It is an object of the invention to improve the belt lock of the type indicated in the introduction such that with a simple construction it is able to be produced at a more favourable cost and is able to be operated more easily and also operates without problems.
This problem is solved according to the invention through the features of Claim 1.
Through this solution, the arresting element is further simplified in its shape. It is able to be produced through a single punching process and requires no bending steps for further fashioning. Its smaller overall size, caused thereby, leads to a smaller mass with the advantage that this element, consisting of metal, now requires less operating forces. The latter is also because in its closing and opening operation, it is exposed to smaller frictional forces, especially since in accordance with the invention it is in principle mounted with a relative large play in the slots. However, in every case a secure stop position of the arresting element is achieved, because on the one hand it is not movable in transverse direction to the longitudinal extent of the lateral slots, at least in the stop position. The tensional forces of the belt are taken up on both sides of their point of application on the arresting element, which makes possible a non-bulky construction of the arresting element and correspondingly easy operability.
Furthermore, a reliable opening of the belt lock is achieved in that the arresting element located in the locking position, through actuation of the release button with a pushing back of the arresting element support, is firstly able to be brought into an inclined position and then further, on emergence of the tongue, is able to be brought into a position substantially parallel to the direction of movement thereof.
The invention is explained in further detail hereinbelow with the aid of an example embodiment illustrated in the drawing, in which:
FIG. 1 shows a longitudinal section through the belt lock in closed position,
FIG. 2 shows an illustration of the closure mechanism of the lock according to FIG. 1 in an intermediate position on actuation of the release button,
FIG. 3 shows the closure mechanism after the completed actuation of the release button,
FIG. 4 shows a simplified partial section along the section line IV--IV in FIG. 1.
According to FIGS. 1 to 3, the belt lock consists substantially of a lock housing 1, with a closure mechanism situated therein, and of two belt strap end pieces 2 and 3, which are shown in partial representation. The end piece 2 has a tongue 4 with a locking slot 5, whilst the other
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patent: 5067211 (1991-11-01), van Riesen
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