DE8803218U1 - Clasp for jewellery, especially pearl necklaces - Google Patents

Description

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Description:

The innovation relates to a clasp for jewellery, especially pearl necklaces.

Such closures are known in many different designs. DE-GM 81 02 538 shows a closure for jewelry, especially pearl necklaces, consisting of a hollow cylinder as a spring holder with an end closure as a rear spring stop and a plunger that can be extended and retracted against the spring action up to a front stop, such that it springs back when it enters a receiving housing, with external stops of the hollow cylinder engaging behind internal stops on the receiving housing and thus a bayonet-like locking mechanism can be achieved.

This well-known closure design is complex to manufacture and the aim of the innovation is to make do with simpler closure parts, which, moreover, are to be made of precious metal and thus punched.

The clasp for jewelry, especially pearl necklaces, according to the preamble of claim 1 is characterized according to the innovation in that the hollow cylinder closed at the end with an inserted spring and a plunger protruding from the front has a transversely braced plug head, which interacts with a corresponding slot on the receiving housing and, when entering the housing with the spring plunger in place and retractable, by turning the hollow cylinder, the plug head is

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head in a transverse position to the elongated hole in the recesses on the inside of the cover plate of the housing for locking. The iiifnahmonahSiice »Ic Hch 1 Zy 1 &iacgr; fidST SUSgSbildSt Rrit Eiidabschluss as a tappet stop for the spring tappet and the other side cover plate with elongated hole.

The closure parts can then be made from simple cover parts and can be made from precious metal and can therefore be punched, with the spring being inserted later.

A preferred embodiment is shown for example in the drawing, which shows: 15

Figures 1 and 2 show the hollow cylinder with inserted spring and protruding spring plunger as well as transverse plug head in two positions rotated by 90° in section, 20

Figures 3 and 4 show the hollow cylinder according to Fig. 1 and 2

in the same positions only partially in section and the hollow cylinder as a receiving housing* which can be installed in a rear part as a sealing piece»

Figures 5 and 6 show the sections to Fig. 3 and 4 respectively

along line V-VI in closed position.

Never apparent from the drawing, the closure consists on the one hand of a hollow cylinder 1 closed at the end with an inserted spring 2 and on the front

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protruding plunger 3 and a transverse plug head 4 in a pointed oval shape; this (4) is preceded by a guide attachment 5 of the hollow cylinder 1 for the spring plunger 3 with end flange 6 as a stop for the plunger edge 7. The spring 2 can thus be inserted into the finished piece and after inserting the plunger 3 the flanged edge 6 can be formed as a finish.

On the other hand, the closure is formed by another hollow cylinder β as a housing with an end closure as a tappet stop for the spring tappet 3 and a cover plate 9 on the other side with an elongated hole/ in a pointed oval shape for inserting the plug head 4 in the same shape. When rotated by 90°, this then falls into the corresponding recesses 11 inside the cover plate 9, as can be seen in Fig. 3 to 6, with the spring tappet 6 providing locking. The closure can only be released again by pressing against this (6) and rotating it by a further 90°.

For the connection of jewelry or pearl necklaces, the hollow cylinders 1 and 8 can have connecting eyelets 12 at the end, or the second hollow cylinder 8 as a receiving housing is held by a stud as a closure piece, as is not specifically shown here.

Claims (5)

VVV ^ VV ^ *'^ TV PATENT ATTORNEYS DR. RUDOLF BAUER · DIPL.-ING. HELMUT HUBBUCH DIPL.-PHYS. ULRICH TWELMEIER WESTLICHE 29 - 31 (AM LEOPOLDPLATZ) 753O PFORZHEIM (WEST-GERMANY) ((07231) 1O2280/70«BPATMARK TELEX783029 patma d 07.03..1988 II/Wa Fa Josef Eberle GmbH & Co. K.G., 7533 Tiefenbronn Clasp for jewellery, especially pearl necklaces Protection requirements: 1. Clasp for jewellery, especially pearl necklaces, consisting of a hollow cylinder as a spring holder with an end closure as a rear spring stop and a plunger that can be extended and retracted against the spring action at the front up to a front stop, such that it springs back when entering a receiving housing, with outer stops of the hollow cylinder engaging behind inner stops on the receiving housing and thereby a bayonet-like locking can be achieved, characterized in that the V " hollow cylinder closed at the end with an inserted spring and plunger protruding at the front has a transversely steep plug head, which interacts with a corresponding slot on the receiving housing and when entering IS the same with the spring plunger being pushed in and retracted by turning the hollow cylinder with the plug head in a transverse position to the slot in the cover plate . of the receiving housing, it falls into the recesses for locking. S.I. * ■ II» ■■ > j > » t · · · · t ft! · · · t ti » &PSgr;* t 2. Closure according to claim 1, characterized in that the receiving housing is also designed as a hollow cylinder with an end closure as a tappet stop for the spring tappet and a cover plate with an elongated hole on the other side. 3. Closure according to claim 1 or 2, characterized in that the plug-in head on the plug-in hollow cylinder and the elongated hole on the cover plate of the receiving hollow cylinder are mutually adapted to be pointed and oval. 4. Closure according to one of claims 1 to 3, characterized in that the hollow cylinder ID withm4-t spring holder and plug head after the same also has a guide attachment for the plunger and end flange as a stop for the plunger edge. 5. Closure according to one of claims 1 to 4, characterized in that both the hollow cylinder with spring holder and the hollow cylinder as a holder housing each have a connection eyelet for jewelry or pearl chains at the end. «· III« III »·