FR2489113A1 - FOLDING CLASP FOR SOFT BRACELET, IN PARTICULAR FOR WATCH BRACELET - Google Patents

Abstract

THE INVENTION RELATES TO A FOLDABLE CLASP FOR FLEXIBLE BRACELETS. A COVER 3 IS ARTICULATED AT AN END 1 OF THE BRACELET AND SNAPS ON TO A TERMINAL ELEMENT 5 WHEN AN EXTENSIBLE INTERMEDIATE ELEMENT 4 FOLDES INTO THE INTERIOR. THE TERMINAL ELEMENT 5 CAN MOVE ON END 2 OF THE BRACELET BY BEING ARTICULATED ON A LOCKING SLIDER 6 AND ALLOWS THE LATTER TO BE FIXED IN THE ADJUSTING POSITION DESIRED, BY MEANS OF AN OFFSET END 7. THE INVENTION S 'APPLIES IN PARTICULAR TO WATCH BRACELETS.

Description

2489 1 13

  Folding clasp for flexible bracelet, especially for

watch strap.

  The invention relates to a collapsible clasp for a flexible bracelet, particularly for a watch strap, in which, if necessary by inserting an elastic element, a cover member is articulated at one end of the bracelet and snaps onto the terminal element when the 'element

  intermediary folds inwards, the intermediate element

  diaire is preferably made in the form of an extensible element. Such folding clasps are known which are threaded onto the hand and which are fixed on the arm, and which consist of bottom elements (end elements), and cover members hinged thereto by means of of intermediate elements, the cover elements snap together

  then releasably in the closed position. These fer-

  foldable rears which are known in the most varied embodiments, do not allow a quick and satisfactory longitudinal adjustment without tools as it would be desirable to allow their adaptation to the arm. In addition, these clasps

  longitudinally adjustable folds are very long, relatively

  thick and thus remove the bracelet largely

flexibility and thinness.

  For this reason, it has already been proposed

  boxes that must be fully opened and which are

24891'13

  adjustable to widen the bracelet, in which a shoemaker

  closure allows an adjustable clamp closure. always

  However, these clasps have the disadvantage that they are in two parts, that consequently bracelets having such a clasp are difficult to put on and that, moreover, when they are removed, they can easily slide out of the clasp. arm or even be lost if they open themselves. Moreover, in such clasps, the eccentric branches are short and consequently difficult to open and can be broken

1o easily a fingernail.

  The object of the invention is to provide a foldable clasp to adjust the length of the bracelet, easily and without tools, which is one piece, which does not drop the wristwatch when it opens, which is

  flat and thin and relatively short, and thus easily adapts

  soft bracelets, especially watchbands. In addition, the bracelet with the watch must be able to open easily for shipping and exhibition without

  that one has to detach the collapsible clasp itself.

  The folding clasp of the type in question is characterized, according to the invention, in that the terminal element is mounted so that

  adjustable at the free end of the bracelet by means of a

  on an interlocking end, and serves, by means of an eccentric end, to fix it to the desired length adjustment position. Thanks to the combination of a folding clasp with a snap fastener with length adjustment and by mounting the eccentric clamping of the latter clasp on the terminal element of the first clasp, we solve the problem advantageously and we get a clasp easy to adjust in length, to

  to clear and fold, which is especially suitable for braces

  non-shortening metal flat links

or woven.

  It is easy to adjust the wristband or watch strap provided with the folding clasp of the invention, without tools, and it remains intact when it is put on or removed, that is to say when it is put on the hand by opening it, without detaching it, and we can not lose it. The

  setting up on the arm is simple by threading it simple-

  on the hand and closing it and in this case, the bottom

  of the folding part is easy to use as eccentric

  that and we do not need to use his nails. Finally,

  thanks to the lock and snap adjustment, it is possible to

  kill a tool-free length adjustment to fit soft wristbands or wristbands when purchasing or even later, for example when

  arm swells during periods of heat.

  The invention will be well understood on reading the description

  example of two forms

  preferred embodiments of the invention, represented schematically

  in the accompanying drawings, in which:

  Figures 1 and 2 are perspective views of a first

  embodiment of the invention, represented in

  closed and in the open position, respectively; Figures 3 and 4 are enlarged side views, partly in section, showing the clasp in the open position to remove the bracelet or to adjust it in length; Figures 5 to 7 are enlarged side views of a

  second embodiment of the invention, in sectional

  in the closed position and in the open position, respec-

  tively; and FIG. 8 is a cross-sectional view along the line

A-A of Figure 7.

  As can be seen for the first embodiment in FIGS. 1 to 4, the folding clasp constitutes an adjustable and releasable connection with a two-step opening between

  ends 1 and 2 of a flexible watch bracelet with links.

  Here, the collapsible clasp is constituted by a cover member 3 articulated on the strap end 1, by an extensible intermediate element 4, and by a terminal element 5. The terminal element 5 can be moved on the end of the bracelet free 2 by means of a slide

  6 and allows, by means of an exchangeable end

  7, to fix the slider 6 in the desired length position. The slider 6 surrounds the free end 2 of the

  bracelet and snaps into place by means of projections or

  snap-fasteners 8 into corresponding cavities

  between the links of the bracelet or in special gorges

  9 on the underside of the bracelet end 2.

  As can be seen in FIG. 3, the end element 5 of the folding part articulated on the slider 6 causes the blocking during the pivoting in the closed position at

  point of articulation by means of the eccentric end 7.

  The blocking slide 6 has on each side,

  above the free end 2 of the bracelet, inwardly directed detent projections 10 on which

  the terminal element 5 of the folding part comes into contact with

  ter in the closed position as shown in Figure 3, and which emerges for the length adjustment of the bracelet, as shown in Figure 4. Finally, the cover 3 covers the latching nose 7a of the end element 5 when the

  clasp is closed as shown in FIG.

  clicks by means of the hinge point 4a of the intermediate element 4, the open position being shown in perspective in FIG. 2. As a result, as can be seen,

  a slim clasp, adjustable in length with a short

  bearing surface formed by the locking slide, so that the flexibility of the bracelet is practically preserved, including

  beyond the clasp. To put or remove the

  celet, simply open or close the clasp as shown in Figure 3, and to adjust it in length, it

  must be completely cleared as shown in Figure 4.

  In the second embodiment according to FIGS. 5 to 8 of the drawing, the folding clasp also constitutes an adjustable and releasable connection with two-step opening,

  between the ends 11 and 12 of the flexible wristwatch.

  Here again, the folding clasp is constituted by the cover member 13 articulated on the end 11 of the bracelet, and by the intermediate element 14 and the end element 15, the intermediate element 14 being an expandable element and its extension being limited by the latching connection 14b. The terminal element 15 can also be moved on the free end 12 of the bracelet by means of

  of the locking slide 16 and allows, by means of the ex-

  eccentric tremité 17, to fix the slider 16, to adjust the length. The slider 16 surrounds the free end 12 of the bracelet and penetrates by means of snap protrusions or beads 18 in corresponding cavities or

  grooves 19 on the lower side of the bracelet 12 for braces

  lets flexible. On the end 12 of the bracelet, the element ter-

  15 of the collapsible portion articulated on the slide causes the blocking during pivoting in the closed position by means of the eccentric end 17 at the point of articulation, a pressure plate 17b being interposed, as seen in Figure 6. The pressure plate 17b is held in lateral slots 17c of the slide 16. The latter comprises, on each side, above the end 12 of the bracelet, on tabs provided with slots 17c, ratchet projections 20 oriented inward, on

  which is engaged, in the closed position

  shown in FIG. 6, the terminal element 15 of the folding portion

  ble, and this must be open, as shown in

  7, to adjust the length of the bracelet. Finally, here

  1, the cover 13 covers the latching nose 17a of the end element 15, when the folding clasp is closed according to FIG. 5, and it clicks by means of the articulation point 14a of the intermediate element 14. With regard to the operation of the clasp for adjusting the length, on the one hand, and for the release, on the other hand, the explanations are the same as for the first embodiment. In the second embodiment, the lid of the clasp is completely covering the two

  sides and up like a hood and it will shrink

  in the direction of the point of articulation.

Claims (6)

Claims.   1. Foldable clasp for flexible bracelets, such as watch bracelets, in which, with the possible interposition of an elastic element, a neck-forming element   vercle is articulated at one end of the bracelet and closes   quest on a terminal element when the intermediate element folds inwards, the intermediate element being, in particular, an expandable element, characterized in that the terminal element (5, 15) is adjustably mounted, the free end of the bracelet (2, 12) by articulation on a locking slide (6, 16), and allows, by means of an eccentric end (7, 17), to fix the latter in the position of desired length.   2. Clasp according to claim 1, characterized in that the locking slide (6, 16) surrounds the free end   (2, 12) of the bracelet and penetrates by means of interlocking projections   quetage (8, 18) in corresponding cavities (9, 19) on the lower side of the bracelet, while the end element (5, 15) of the folding part articulated on the slide (6, 16) causes the locking during pivoting in the closed position, by means of the eccentric end (7, 17) at the point of articulation. Clasp according to claim 1 or 2, characterized in that the locking slide (6, 16) has on each side, above the free end (2, 12) of the strap, detent projections ( 10, 20) facing inwards, on which the end element (5, 15) of the part   collapsible is snapped over in the closed position.   Clasp according to one of claims 1 to 3, characterized   in that between the eccentric end (17) of the element   terminal (15) of the folding part and the end of   bead (12) placed in the locking slide (16) is a pressure plate (17b) held by   side tabs in lateral slots (17c) of the neck slider (16).   5. Clasp according to one of claims 1 to 4, characterized   in that the latching between the cover (3, 13) and the end element (5, 15) of the folding part can be achieved by the end element (5, 15) by means of latching lugs ( 7a, 17a) passing behind the articulation point (4a, 14a) of the intermediate element (4, 14) on the lid (3, 13).   Clasp according to one of the preceding claims,   characterized in that the cover (3, 13) completely covers   the clasp like a hood, on each side   and from above and narrowing towards the point of culation (4a, 14a).