DE3541058A1 - ARC SPRING LOCK - Google Patents

Description

Bow spring ^ clasp

The invention relates to a bow spring clasp for jewelry chains, which stationary clasp comprises a loop or ring joint for attachment as part of the chain at one end of the Chain, with an articulated locking tongue made of metal wire material at the other end of the chain, which tongue in terms of the loop or ring joint at one end of the chain in a vertical position of the breech block and shifted to the point of the arch bent towards the hinge part of the spring, and in the direction of the chain is rotated, the chain being in the locking position from which it is in the opposite direction Rules of action can be exempted.

To a small extent, such hook fasteners are initially made into jewelry chains made from base metals used. The construction of the known hook fastener is based on one made of metal wire or -band curved or single hooks cut out of sheet metal. There is one disadvantage to the use of this hook, namely its free-standing tip, which is in points of contact intervenes easily, opens up easily in this context and is therefore insecure. Because the catch of this guy too is not suitable for most jewelry chains and makes a cheap impression, the hook rarely turns into precious metal chains used.

The invention has for its object to improve the hook fastener of the type mentioned above so that the Hook to protect the tip is attached stationary in a chain part that it is ready for use after the casting process can be made and that the closure is safe and easy to handle.

This object has been achieved by the bow spring lock according to the invention, which is characterized by is that the body part of the clasp is made up

a part of the jewelry chain, with an arc spring made of metal wire material used instead of a ring joint is shaped by bending and machining in such a way that the bow spring replaces the ring joint that its Extension bends as a locking lever into the body part so that the tip part turns outward Points of attack is protected, and that by a bow spring a security is achieved for the locking, whereby the prerequisite for an exemption from this Locking is that the part in question of one end of the chain is in a vertical position with respect to the body part of the shutter is rotated and moved freely by the spring lock of the tip of the bow spring.

The one-piece, stationary bow spring lock is manufactured using a casting process and is ready for operation is suitable as a single clasp for different chains. In addition, it is safe and easy to handle, and because it is in is attached to a part of a chain model, it usually deviates insignificantly little from the other parts. He is ready for use, although parts are removed from one end of the chain, and allows almost unnoticed Union of several chains.

In the following, some exemplary embodiments of the invention will be described in more detail with reference to the accompanying drawings described in the

Figure 1 and 1b a side view of an inventive Arch spring clasp and part of one end of the chain by a loop 1 ″ on an arch spring 2 show locked,

Figure 1a shows the locking phase of the chain shown in Figure 1,

Figure 2 and 2b a closure according to Figure 1 and a part of one end of the chain by a loop 1 ' show the bow spring 2 locked from below,

2a shows a cross-section of the closure 1 taken from FIG. 2 along the line a-a during the initial

shows the locking process,

FIGS. 3 and 3b show a side view of a bow spring lock according to a second embodiment of the Invention in the locked position and part of one end of the chain through a ring joint 4 on the bow spring 2 show locked,

FIG. 3a shows the locking phase of the one shown in FIG Arc suspension shows

FIGS. 4 and 4b show a bow spring lock according to Figure 3 in the locked position and part of the one Show the end of the chain locked by the ring joint 4 on the bow spring 2 from below,

FIG. 4a shows a cross section of the closure 1 according to FIG. 3a,

FIGS. 5 and 5b show a side view of a bow spring lock according to a third embodiment of the invention in the locked position and part of the one Show the end of the chain locked by the ring joint 4 on the bow spring,

FIG. 5a shows a bow spring lock according to FIG. 5 shows released from the spring lock, with the part in question of one end of the chain removed from the bow spring is,

6 and 6b show a bow spring lock according to FIG. 5 in the locking position and part of the one Show the end of the chain locked by the ring joint 4 on the bow spring 2 from below.

A bow spring lock shown in Figures 1, 1b, 1a, 2, 2b and 2a is attached to a loop 1 ' attached to one end of a jewelry chain in the same way as the rest of the chain. Depending on the The manufacturing method of the joint ring can be left with an open joint or it can be soldered. One shown in these figures Bow spring 2 is in its final position while bent into the body of the breech the tip part protected from external attack points

is. When the chain part 3 is changed into a fastener, there is a crossbar located in the middle of the part removed. The chain part 3 is widened so that the loop 1 'of the part 3 when locked according to Figure 2a can be pushed within the body part 1, while the tongue 2 acts as a spring-locking mechanism. Part 3 is in shifted vertical position to the pivot point 2 'of the bow spring and rotated in the direction of the chain, whereupon the locking phase is complete. To release the lock, the chain part 3 is moved in the vertical direction rotated with respect to the body part 1 of the closure and shifted against the tip part of the spring 2, in which End phase of the tip part, which acts as a spring lock, has to give way and the chain is released from the lock.

The bow spring closure 1 of the chain model shown in Figures 3, 3b, 3a, 4, 4b and 4a has a same basic construction as the closure of the last chain model, a slot 1 ¹ in the closure member 1 of this jewelry chain enables the locking of the tip of the sheet spring 2 for which reason it does not act as a spring-loaded spring. The spring 2 opens in the manner shown in Figure 3a and frees itself from the body part 1. After the joint ring 4 of the part 3 has been pulled through the arc spring 2 in the open position and rotated in the chain direction, the thickened tip part becomes the arc spring 2 pressed into a slot 1 ″ of the body 1. While the walls are springing outwards, the tip part of the bow spring 2 presses itself into the locking and engagement locking position in a recess within the walls of the body with a snap Bow spring 2 is lifted from the locking recess, for example by means of a nail, and the part 3 is removed from the bow spring 2 in a position rotated vertically to the body of the closure 1. The stationary ring joint 4 at the opposite end of the bow spring of the closure part

3541Q58

1 makes it possible to use the clasp as a single clasp on different chains by using one Connection ring can be used.

In the chain model shown in Figures 5, 5b, 5a, 6 and 6b, the basic construction of the is correct Arch spring lock 1 is the same as the previous one. The spiral body 3 of this chain model assumes that the bow spring 2 is bent so that it conforms to the shape of the body. Pulling the a chain end happens in the same way as with the previous clasp, whereupon the outermost point 2 " the spring 2 when pressed in the spiral direction into the attack blocking position in the spiral of the body part 1 is locked.

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Claims (3)

PATENTANWÄLTE TISCIIER KERN & BREHM Albert-Rosshaupter-Strasse 65 D 8000 Munich 70 Teldon (089) 7605520 ■ Telex ^ 21495 0ls äfaegramme core patent Munich Ra-7444 Patent claims: 3541058 1. One-piece bow spring clasp (1) that matches the model of the jewelry chain and can be made ready for use by casting, which clasp is attached to a jewelry chain in the same way as the other parts of the jewelry, with a loop (1 ¹ ) at one end the jewelry chain (3) in the interior of the body part of the clasp (1) inserted in a vertical position into a bow spring (2) of the clasp and übar the tip of the bogon spring (2) moved to a hinge point (2 ¹ ) and rotated in the direction of the chain is the phase in which the chain is in the final locking position and can be released from locking by rotating the part (3) along the arch (2) into a vertical position to the body of the lock (1) and is freely displaced over the tip of the arch (2), characterized in that the body part of the clasp consists of a part (3) of the jewelry chain, which instead of one The arc spring (2, 2 ') used in the ring joint (4) is formed by bending and machining from metal wire material in such a way that the bow spring (2, 2') replaces the ring joint (4) so that its extension can be used as a locking lever in the body part (1) bends in such a way that the tip part is protected from external points of attack, which tip part can also alternatively be locked by pressing into the body in the safety lock and that the arc spring (2) provides security for the lock, whereby the release from this lock presupposes that the part (3) of one chain end is rotated in the vertical direction with respect to the body part (1) of the lock and is freely displaced via the spring lock of the tip of the bow spring (2). 2. Arc spring lock according to claim 1, characterized in that the one end of the closure (1) is connected to a joint ring (4) as a fixed part, and that the thickened Tip part of the spring bow (2) to the locking and attack locking position in a slot (1 ") of the body (1) can be pressed. 3. Arch spring lock according to Patent Claim 1, characterized in that the one end of the closure (1) a joint ring (4) is attached as a fixed part and that the tip of the with the spiral shape matching spring arch (2) to an outermost tip (2 ") is bent, which when pressing the spring is locked in the spiral direction.