DE2133032A1 - Bracelet clasp - Google Patents

Description

Andre KÜBLER-HUOT LA CHAUX-DE-FONDS / Switzerland

Bracelet clasp s

The invention relates to a simple and practical design of a bracelet clasp from two parts, in particular for one Watch strap with at least one free strap end.

Such types of fasteners for bracelets are in various Designs known, with the one pinching the two ends of the bracelet between clamping jaws, which of course leaves visible marks on the surface of the bracelet, while the other clasps have a series of holes at one end of the bracelet. Such perforations can only be made in bracelets made from a soft manufacturing material or on metal bracelets, which are intended for this purpose.

There are also fasteners known which are fixedly arranged at one end of the bracelet and with which the other, free end of the strap is pinched. This clamping of the other end of the tape takes place between a base plate of the fastener and an eccentric which can be lowered onto the base plate. This base plate is here with a rib or the like. provided which engages in one of several grooves on the invisible one

209811/0289

0905. K215.12D.l / la - BIl / KW / ek

Side of the bracelet are arranged.

The purpose of the invention is to create a bracelet clasp made of two parts, the length adjustment being extremely easy and can be set once and for all, but on the other hand an exchange or change if necessary is possible.

Such a bracelet clasp of the type mentioned is for this purpose characterized according to the invention by a closure part in the form, a U-profile piece, hinged two levers between the legs are, of which one clamps the U-profile at one end of the bracelet, while the other locking part on the other lever in the form of a rectangular ring can be attached to the other end of the bracelet and is lockable.

Between the legs of the U-profile it can be made of an elastic one Plate can be arranged pivotably, which can be pressed onto the end of the bracelet by means of the eccentrically designed clamping lever.

To secure the closure, it is also advantageous at least to provide a projection or a rib on the U «profile part, which then in at least one groove on the inside of the bracelet engages.

The second of the two levers is designed in a way that that it covers the first lever when folded.

In the accompanying drawings, there are two exemplary embodiments shown according to the invention en bracelet clasp, where show;

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BGfNAL INSPECTED

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

a profile view of a first embodiment, an axial section thereof,

a plan view from the underside of the bracelet, the side view of a second Ausftthrungsform, an axial section thereof and

again a plan view of the underside of the Bracelet.

The closure shown in FIGS. 1, 2 and 3 consists here from a base part 1 in the form of a U-profile piece, between whose legs are hinged at 2 and 3, the two levers 4 and 5, which have the shape of an L.

The first lever 4 articulated in FIG. 2 is provided with a longer lever arm for actuation and a short lever arm for clamping the Bracelet end 6 equipped between itself and the bottom of the U-profile piece. The end of the bracelet is used to secure this clamp connection 6 provided on its inner surface with several grooves 7 and the U-Profilstttck 1 with a projection 8 with corresponding Dimensions, which engages in one of these grooves 7.

As soon as the clamping lever 4 is raised, the end of the bracelet can 6 can be moved freely in the U-profile piece 1. A blocking of this displaceability only takes place when the lever 4 through Actuation of his longer lever arm is lowered.

As already mentioned, the second lever 5 is used for hanging and Locking the second locking part. This second closure part has the shape of a rectangular ring and sits firmly on the other end of the bracelet 6. This ring is used to close the bracelet Slipped over the longer lever arm of the second lever 5, whereupon this lever arm is then turned over.

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The short arm of the lever 5 presses itself slightly into the surface of the The end of the bracelet, so that the clasp is due to the more or less elastic property of the bracelet material is secured .. At the same time, the clamping lever is blocked 4, in that it is covered by the longer arm of the second lever 5 in the folded-in state.

To secure this blocking, if necessary, at the point where the short lever arm of the lever 5 is in the closed state, a further projection is provided, which in a second groove of the bracelet engages.

In the second embodiment of the bracelet clasp according to the invention According to FIGS. 4, 5 and 6, a base part with a U-profile is again provided, between the legs at 2 and 3 the two L-shaped legs 4 and 5 are hinged. Here too is the articulated at 2 lever 4 with a longer lever arm for its actuation and a short lever arm for clamping the bracelet end equipped between itself and the base part of the U-profile 1. This clamping of the bracelet end 6 takes place here, however, with the interposition of an elastic plate 12, which with pegs 11 pivotally mounted in holes 10 in the legs of the U-profile 1, is.

To secure this connection is also in this embodiment the inside of the bracelet end 6 is provided with grooves 7 while the U-profile 1 has two front jumps 8 which engage in these grooves 7. If the clamping lever 4 is raised, this can also be done here the bracelet end 6 can be moved in the U-profile part 1. Blocking takes place only after lowering the clamping lever 4, which from above onto the mentioned plate 12 and presses it against the end of the bracelet.

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Here, too, the second lever 5 is used again for hanging and locking of the second closure part. This second closure part also has the shape of a right-angled ring 9 and is attached to the other end of the bracelet 6. To close the With the bracelet clasp, this ring 9 is hung over the folded-up lever 5 and this lever is then turned over. Here too presses the short arm of the lever 5 via the mentioned plate 12 on the surface of the bracelet end, whereby the elastic properties of the manufacturing material hold this lever 5 in the closed position.

This second lever 5 simultaneously secures the clamping lever 4 against involuntary actuation by covering this lever in the folded state.

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Claims (4)

mm Q ao PAT CLAIMS (left bracelet clasp made of two parts, especially for a watch strap with at least one free end of the tape, characterized by a closure part in the form of a U-profile piece (l), between the legs of which two levers (4, 5) are articulated, one of which (4) clamps the U-profile at one end of the bracelet (6) while on the other lever (5) the other closure part in the form of a rectangular ring (9) can be suspended and locked on the other end of the arraband is. 2. Closure according to claim 1, characterized by one between the legs of the U-profile (1) pivotably arranged, elastic Plate (12) which can be pressed onto the bracelet end (6) by means of the eccentrically designed clamping lever (4). 3. Closure according to claim 1, characterized by a projection (8) on the U-profile part (1), which in at least one groove (7) engages the inside of the bracelet (6). 4. Closure according to claim 1, characterized by a second lever (5) which the first lever (4) in the folded state covered. 209811/0289 Blank page