EP3537918B1 - Clasp for customisable fancy bracelet - Google Patents

Description

Technical area

The present invention relates to the field of fancy bracelets, for example in pearl or fabric, single or multi-row, and in particular to clasps for such fancy bracelets.

Prior art

Patent documents US-5689867 , US2014 / 130544 , US2011 / 179604 and JPH10179219 each describe a clasp for a fancy bracelet which allows the two ends of the bracelet to be closed on two opposite sides of the clasp.

The patent clasp US-5689867 is designed to be partly interchangeable. However, in this known clasp, the attachment of the ends of the bracelet to the opposite sides of the clasp is made permanent by welding. It will be noted that this fixing by welding is not suitable for fabric bracelets. EP2277399 discloses the preamble of claim 1.

The aim of the invention is to provide another type of clasp for a fancy bracelet which is less expensive to manufacture and which makes it possible to interchange / personalize the bracelet simply and quickly.

To this end, the invention relates to a clasp for a fancy bracelet, comprising a body with two opposite sides on which respectively the ends of the bracelet are fixed, said body of the clasp being designed in two complementary parts each forming one side of the clasp, each part of the clasp having, on its side for fixing one end of the bracelet, a groove which extends longitudinally between two groove ends along the fixing side, said groove being a semi-open groove with undercut, the groove being closed at one of its two ends and open at its other end, characterized in that that the two parts are assembled by magnetic effect and in that the clasp part is L-shaped and further comprises on the side of the closed end of the groove a lateral flange which projects transversely to the fixing sides and which is designed to close the open end of the groove of the other complementary part of the body of the clasp when the two complementary parts of the clasp are assembled by magnetic effect.

• chaque partie du corps de fermoir comprend une face d'assemblage qui est opposée au côté de fixation et qui présente un trou et un pion de détrompage qui coopèrent respectivement avec un pion et un trou de détrompage prévus sur la face d'assemblage de l'autre partie du corps de fermoir ;
• il comprend pour chaque partie du corps au moins une attache conçue d'une part pour s'accrocher à une extrémité du bracelet et d'autre part pour s'insérer dans la rainure tout en étant bloquée contre des flancs de la contre dépouille de la rainure ;
• l'attache est un rivet à double tête traversant l'une des extrémités du bracelet ;
• l'attache est un coulisseau à section en T serti à l'une des extrémités du bracelet ;
• l'attache est un coulisseau en forme de barrette sur laquelle l'extrémité du bracelet s'accroche à l'aide d'un moyen d'accrochage tel qu'un crochet, une boucle, un anneau ou un maillon de chaînette ;

The clasp according to the invention can have the following features:

• each part of the clasp body comprises an assembly face which is opposite the fixing side and which has a hole and a keying pin which cooperate respectively with a pin and a keying hole provided on the assembly face of the other part of the clasp body;
• it comprises for each part of the body at least one fastener designed on the one hand to catch on one end of the bracelet and on the other hand to fit into the groove while being blocked against the sides of the undercut of the groove;
• the fastener is a double-headed rivet passing through one end of the bracelet;
• the fastener is a T-section slide crimped at one end of the bracelet;
• the fastener is a slide in the form of a bar on which the end of the bracelet is hooked using a hooking means such as a hook, a loop, a ring or a chain link;

The invention extends to a fancy bracelet comprising a clasp according to the invention.

Brief presentation of the drawings

• la figure 1 illustre en perspective les deux parties complémentaires du fermoir selon l'invention ;
• la figure 2 représente le fermoir de la figure 1 vu en plan ;
• la figure 3 représente le fermoir de la figure 1 suivant une autre perspective ;
• la figure 4 montre en coupe une partie du fermoir montré sur la figure 1 ;
• la figure 5 montre en coupe la partie du fermoir complémentaire à celle montrée sur la figure 4 ;
• la figure 6 montre en coupe une partie du fermoir selon un autre mode de réalisation ;
• la figure 7 montre en coupe la partie du fermoir complémentaire à celle montrée sur la figure 6 ;
• la figure 8 montre en coupe les deux parties complémentaires des figures 4 et 5 en position d'assemblage pour fermer un bracelet de fantaisie ;
• la figure 9 montre en perspective des attaches selon l'invention de type rivet à double tête ;
• la figure 10 montre en coupe une partie du fermoir montré sur la figure 1 avec une attache sous forme de rivet à double tête ;
• la figure 11 montre en coupe la partie du fermoir complémentaire à celle montrée sur la figure 10 ;
• la figure 12 montre en coupe les deux parties complémentaires des figures 10 et 11 en position d'assemblage pour fermer un bracelet de fantaisie ;
• la figure 13 montre en coupe une partie du fermoir montré sur la figure 1 avec une attache à section en T serti à l'extrémité du bracelet ;
• la figure 14 montre en perspective deux attaches à section en T distinctes ;
• la figure 15 montre en coupe les deux parties complémentaires du fermoir selon l'invention avec une attache en forme de barrette ;
• la figure 16 montre en coupe une partie du fermoir selon l'invention avec une attache en forme de barrette déployée ;

The present invention will be better understood and other advantages will appear on reading the following description and the appended drawings in which:

• the figure 1 illustrates in perspective the two complementary parts of the clasp according to the invention;
• the figure 2 represents the clasp of the figure 1 seen in plan;
• the figure 3 represents the clasp of the figure 1 from another perspective;
• the figure 4 shows in section part of the clasp shown on the figure 1 ;
• the figure 5 shows in section the part of the clasp complementary to that shown on the figure 4 ;
• the figure 6 shows in section a portion of the clasp according to another embodiment;
• the figure 7 shows in section the part of the clasp complementary to that shown on the figure 6 ;
• the figure 8 shows in section the two complementary parts of the figures 4 and 5 in assembly position to close a fancy bracelet;
• the figure 9 shows in perspective fasteners according to the invention of the double-headed rivet type;
• the figure 10 shows in section part of the clasp shown on the figure 1 with a clip in the form of double headed rivet;
• the figure 11 shows in section the part of the clasp complementary to that shown on the figure 10 ;
• the figure 12 shows in section the two complementary parts of the figures 10 and 11 in assembly position to close a fancy bracelet;
• the figure 13 shows in section part of the clasp shown on the figure 1 with a T-section clip crimped at the end of the bracelet;
• the figure 14 shows in perspective two separate T-section fasteners;
• the figure 15 shows in section the two complementary parts of the clasp according to the invention with a clip in the form of a bar;
• the figure 16 shows in section a part of the clasp according to the invention with a clip in the form of a deployed bar;

Description of embodiments

On the figures 1 to 3 , there is illustrated a clasp 1 for a fancy bracelet according to the invention.

The clasp 1 is especially designed for single-row or multi-row bracelets of chain, macrame, pearls, straps, leather braids, ribbon types, etc.

On the figures 1 to 3 , the bracelet is not shown. This clasp 1 is symmetrical along a central axis AA. It can preferably be made of metal.

The clasp 1 has a body in two complementary parts 1A, 1B.

It has two opposite longitudinal fixing sides 2A, 2B on which respectively the ends of the bracelet are fixed.

Each part 1A, 1B of the clasp 1 here has a general L shape. The two parts 1A, 1B each forming one side of the clasp are here designed to be assembled by magnetic effect.

Each part 1A, 1B of the clasp has, on its side for fixing one end of the bracelet, a semi-open groove with undercut 3A, 3B visible on the figures 1 and 3 .

In the figures, there is shown a T-section groove.

The groove could also be a dovetail section groove, etc.

This semi-open undercut groove has a longitudinal slot which has a width smaller than the base of the groove so as to form undercut flanks on each side of the longitudinal slot which serve as a locking surface as explained. further.

Each groove 3A, 3B extends longitudinally between two groove ends along the corresponding fixing side.

The groove 3A, respectively 3B, is closed at one of its two ends E1 and open at its other end E2.

As shown on figures 4 and 5 , the parts 1A, 1B of the L-shaped clasp respectively comprise, on the side of the closed end E1 of the groove 3A, 3B a lateral flange 4A, 4B which projects transversely with respect to the fixing sides and therefore to the median axis AA and which is designed to close the open end E2 of the groove 3B, 3A of the other complementary part 1B, 1A of the body of the clasp when the two complementary parts 1A, 1B of the clasp are assembled by magnetic effect.

According to another embodiment of the clasp, the L-shaped parts 1A, 1B respectively comprise, on the side of the open end E2 of the groove 3A, 3B, a side flange 4A ', 4B', visible on the sides. figures 6 and 7 , which projects transversely with respect to the fixing sides and therefore to the central axis AA and which is designed to close the open end E2 of the groove 3B, 3A of the other complementary part 1B, 1A of the body of the clasp when the two complementary parts 1A, 1B of the clasp are assembled by magnetic effect.

As visible on the figures 1 and 3 , each part 1A, 1B of the clasp body comprises an assembly face 5A, 5B respectively which is opposite to the corresponding fixing side and which has a hole 6A, 6B and a keying pin 7A, 7B. The keying hole and pin 6A, 7A of part 1A respectively cooperate with the pin and keying hole 6B, 7B provided on the assembly face of the other part 1B of the clasp body.

As shown on figures 1 and 3 , the parts 1A and 1B respectively comprise at the opposite end of the side flange 4A and 4B a tongue 16, which is an extension of the body at the level of its opening E2, designed to hide the edge of the side flange from the opposite part when the clasp is assembled. This tongue 16 also makes it possible to guide the flange during the assembly of the two parts 1A and 1B and to increase the strength of the clasp when it is assembled in addition to the magnetic effect and the coding pins.

As visible on the figures 1 and 3 , the assembly face 5A or 5B comprises in its central part a bore 8A, 8B here oblong which serves to house a magnet 9A, 9B shown in particular on the figures 4 to 7 .

The pin 6A and the hole 7A (respectively 6B, 7B) are arranged on either side of the bore 8A (respectively 8B) in the axial direction A-A.

On the figure 8 , we have shown the two parts 1A, 1B assembled by magnetic effect to close the ends of a fancy bracelet 10 here consisting of several rows.

On the figure 8 , each row of the bracelet is hooked inside the groove to a clip 11 formed for example by a two-headed rivet shown in perspective on the figure 9 and in section on figures 10 to 12 . The rivet heads here have a square shape but can also be in a circular shape.

Here the rivets 11 with two heads cross the different rows of the bracelet.

However, it will be understood that the thickness of the row of the bracelet may be too great for its end to be inserted into the groove to be fixed there with fastening means 11 of the rivet type. Thus, a T-shaped clip 11, as visible on the figure 13 , can be set on the end of the bracelet, here at the end of a row of the bracelet, outside the groove. This type of T-shaped fastener 11 can thus have different sizes to accommodate various shapes and thicknesses of row of bracelet.

The T-shaped fasteners 11 are for example cylindrical or cubic depending on the type of row used, as visible on the figure 14 .

Several T-shaped fasteners 11 or several rivets can be mounted integral with each other in order to form a set of fasteners 11, visible on the figures 8 and 9 .

The figure 15 illustrates a clip 11 for the two parts 1A, 1B of the clasp which is a slide in the form of a bar on which the end of the row of the bracelet 10 is hooked using a hooking means 12, here a hook . Other hooking means of the ring, loop or chain link type can also be used.

In general, it will be understood that the different sets of fasteners 11 will be chosen according to the type of bracelet used.

Note that the magnet 9A, 9B can have an additional function of immobilizing the clip 11 by magnetic effect in the groove when the clip is metallic

In order to increase the immobilizing effect, it is possible to provide in the bore 8A, 8B an open window in the groove so that part of the magnet is directly opposite the fasteners 11.

It is also possible to provide for immobilizing the attachment 11 and more particularly the slide when it is deployed outside the groove 3A, 3B in the direction of the arrow in direction F1, as shown in FIG. figure 16 . A locking screw 13 is in this case disposed at the end E2 of the groove 3A, 3B transversely to the slide which has a groove 14 configured to receive the locking screw 13. The groove 14 is plugged at one of its ends by a stop 15 against which the locking screw 13 rests when the slide is deployed.

All 11 fasteners shown on figures 8 to 16 are designed to be inserted through the open end E2 of the undercut groove and to slide therein while being blocked by the flanks of this undercut (i.e. by being prevented from exiting through the undercut. longitudinal slot of the groove). The axial position of the clip in the groove is of no importance for the invention. When the two parts 1A, 1B of the clasp body are assembled by magnetic effect, the flanges 4A, 4B prevent the fasteners from coming out through the open ends E2 of the undercut grooves.

If the user wants to change or personalize his bracelet while keeping the same clasp 1, he simply has to separate the two parts 1A, 1B of the clasp 1 to release the open end E2 of each groove in order to bring out the fasteners 11 through these open ends E2 and then he only has to insert other fasteners 11, chosen from among the array of fasteners 11 described above, attached to other rows of bracelet 10 in these same grooves.

Claims (7)

1. A clasp for a fancy bracelet, the clasp comprising a body (1) having two opposite sides (2A, 2B) to which respective ones of the ends of the bracelet come to be fastened, said body of the clasp being designed as two complementary portions (1A, 1B), each of which forms one respective side of the clasp, each portion (1A, 1B) of the clasp having a groove in its fastening side (2A, 2B) for fastening to a respective end of the bracelet, which groove extends longitudinally between two groove ends along the fastening side, said groove (3A, 3B) being partially closed with undercutting, said groove (3A, 3B) being closed at one of its ends and open at its other end, said clasp being characterized in that the two complementary portions (1A, 1B) being suitable for being held together by a magnetic effect, and in that said clasp portion is L-shaped and, at the same end as the closed end (E1) of the groove, is further provided with a side projection (4A, 4B) that projects transversely relative to the fastening sides and that is designed to close the open end (E2) of the groove in the complementary other portion of the body of the clasp when the two complementary portions of the clasp are held together by a magnetic effect.
2. A clasp according to claim 1, characterized in that each portion of the clasp body has a holding face (5A, 5B) that is opposite from the fastening side and that is provided with a keying hole (6A, 6B) and with a keying lug (7A, 7B) that cooperate respectively with a keying lug and with a keying hole with which the holding face of the other portion of the clasp body is provided.
3. A clasp according to any preceding claim, characterized in that, for each portion of the body, the clasp is provided with at least one fastener (11) designed firstly to be attached to one end of the bracelet and secondly to be suitable for being inserted into the groove while also being blocked against the edges of the undercutting of the groove.
4. A clasp according to claim 3, characterized in that the fastener (11) is a double-headed rivet passing through one of the ends of the bracelet.
5. A clasp according to claim 3, characterized in that the fastener (11) is a slide that is of T-shaped section and that is crimped to one of the ends of the bracelet.
6. A clasp according to claim 3, characterized in that the fastener (11) is a slide in the form of a strip to which the end of the bracelet is suitable for being attached by attachment means, such as a hook, a loop, a ring, or a chain link.
7. A fancy bracelet (10), characterized in that it includes a clasp according to any preceding claim.

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