CH716252B1 - Improved dismantling clasp. - Google Patents

Abstract

The invention relates to a clasp for securing two ends of at least one band (9) comprising a pin (3) intended to be pivotally mounted about a pivot axis (A) on a first (8) of the two ends of the band (9), a substantially U-shaped open loop (5) which is closed by mounting the pin (3) between two substantially parallel flanges (14a, 14c) of its U-shape, a barb ( 7) assembled between the pin (3) and a base (14b) of the U-shape of the buckle (5) so as to be able to cooperate with a hole in the second of the two ends of the strip (9) to secure the two strip ends (9). According to the invention, the clasp comprises a system for dismantling the pin (3) controlled by the rotational movement of the barb (7) relative to the axis (A) of pivoting in order to disassemble the pin ( 3) compared to the other parts of the clasp.

Description

TECHNICAL FIELD OF THE INVENTION

The present invention relates to an improved dismantling clasp to change easily and without tools, for example the clasp or the band of a bracelet or a belt.

TECHNICAL BACKGROUND OF THE INVENTION

[0002] It is known to use elastic bars or screws to leave the strip of a bracelet removable from a timepiece and/or a clasp. However, in these cases, it is necessary to have a tool to carry out the dismantling.

SUMMARY OF THE INVENTION

[0003] The object of the invention is to provide a clasp which can be dismantled quickly and without tools, making it possible in particular to replace the clasp or the strap (or one or both strap strips) in particular of a bracelet or a belt.

[0004] To this end, the invention relates to a clasp for securing two ends of at least one band comprising a pin intended to be pivotally mounted about a pivot axis on a first of the two ends of said at least a strip, a substantially U-shaped open loop which is closed by mounting the pin between two substantially parallel flanges of its U-shape, a barb assembled between the pin and a base of the U-shape of the buckle so to be able to cooperate with a hole in the second of the two ends of the said at least one strip to secure the two ends of the said at least one strip, characterized in that it comprises a system for removing the pin controlled by the rotational movement of the pin relative to the pivot axis in order to disassemble the pin relative to the other parts of the clasp without tools.

[0005] Advantageously according to the invention, the dismantling system uses a part of the clasp as a grip to control the disassembly of the pin, thus avoiding the use of a separate tool. In addition, a simple rotation of the barb thus makes it possible to quickly control the disassembly of the pin. It is therefore understood that externally, the pin according to the invention may be very little visible in comparison with dismantling of the screw type as mentioned above.

[0006] The invention may also comprise one or more of the following optional characteristics, taken alone or in combination.

[0007] The dismantling system is preferably inactive over a predetermined range of movement of the barb to allow cooperation of the barb with the hole in the second of the two ends of said at least one band over the predetermined range of movement, then active once the displacement of the barb has exceeded the predetermined range in order to be able to disassemble the pin in relation to the other parts of the clasp without tools. Preferably, between the initial position of the barb pressed against the base of the buckle and the end of the predetermined angular range, the barb travels at least 180 degrees, that is to say for example 180 degrees, 190 degrees, 200 degrees, 210 degrees, 220 degrees, 230 degrees, 240 degrees, 250 degrees, 260 degrees, 270 degrees, 280 degrees, 290 degrees, 300 degrees, 320 degrees or 330 degrees so as not to interfere with the usual cooperation between the barb and the hole in the second of the two ends of the strip.

[0008] The dismantling system may comprise a device for angular positioning of the pin by the at least temporary coupling of the latter with the barb in order to position the pin in a predetermined manner when the movement of the barb has exceeded the angular range predetermined.

[0009]According to a particular variant, the angular positioning device may, for example, comprise a cam path hollowed out in the pin cooperating with a lug mounted on the internal diameter of a slot in the barb. It is understood that the cam path, over the predetermined angular range of the barb, is substantially perpendicular to the pivot axis. Then, past the predetermined angular range, the cam path deflects obliquely so that the barb interacts with the pin so as to move it according to a particular orientation.

[0010]According to another variant, the coupling of the pin and the barb can be permanent when this first is assembled with the other parts of the clasp. Such a permanent coupling can be, for example, obtained by complementary geometries formed respectively on the pin and on the barb. It is then understood that the pin and the barb will be integral in rotation throughout the predetermined angular range but free in translation in the direction of removal of the pin.

[0011] The dismantling system may further comprise a device for locking the pin in the loop in order to hold the loop on the first of the two ends of said at least one band. It is understood that, at least over the predetermined angular range of the barb, the locking device prevents relative movement between the pin and the buckle.

[0012]According to a particular variant, the locking device comprises at least one pivot-type connection between one end of the pin and an opening formed in one of the two substantially parallel flanges of the buckle.

According to another variant, the locking device comprises complementary geometries formed respectively on one end of the pin and on an opening formed in one of the two substantially parallel flanges of the buckle. It is understood that this variant only blocks the rotation of the pin in one of the flanges without preventing a translation in the direction of disassembly of the pin.

[0014]According to yet another variant, the locking device comprises at least one fixing of the elastic interlocking type between one end of the pin and an opening formed in one of the two substantially parallel flanges of the buckle. It is understood that this variant is intended to prevent a translation in the direction of removal of the pin below a predetermined constraint. This variant may in fact be sufficient to hold the pin in a flange, in particular in the absence of a projecting part of the pin with respect to the buckle.

[0015]According to yet another variant, the locking device comprises at least one fixing of the snap-fit type between one end of the pin and a sleeve mounted in an opening provided in one of the two substantially parallel flanges of the buckle. It is understood that this variant is intended to prevent a translation in the direction of removal of the pin below a predetermined constraint. This variant also allows a homogeneous external visual appearance to the clasp while making the latter safer and more robust.

[0016] Advantageously according to the invention, the dismantling system may also comprise a device for releasing the pin relative to the buckle in order to cause one end of the pin to protrude relative to the buckle to allow it to be gripped when the barb has exceeded its predetermined angular range and thus facilitate the removal of the pin.

[0017]According to a particular variant, the release device comprises at least one cam assembly - cam follower forcing one end of the pin to be moved away from the buckle.

Finally, the invention also relates to an article comprising a strap formed of at least one strip, characterized in that it comprises the clasp as presented above in order to secure two ends of the strap. In no way limiting, the article can thus form all or part of a piece of leather goods, a piece of weaving, a piece of jewelry, a piece of jewelry or a timepiece such as a satchel strap or closure, a handbag strap or closure, a parachute fabric strap, a bracelet, a belt or equestrian harness.

BRIEF DESCRIPTION OF DRAWINGS

Other features and advantages of the invention will emerge clearly from the description which is given below, by way of indication and in no way limiting, with reference to the appended drawings, in which: Figure 1 is a schematic view of a timepiece according to the invention; FIG. 2 is a perspective view of a first embodiment of a dismantling system according to the invention in an inactive configuration; Figure 3 is a perspective view of the first embodiment of the dismantling system according to the invention in an active configuration; Figure 4 is a perspective view of a loop of the first embodiment of the dismantling system according to the invention; Figure 5 is a perspective view of a pin of the first embodiment of the dismantling system according to the invention; Figure 6 is a perspective view of a loop of a second embodiment of the dismantling system according to the invention; Figure 7 is a perspective view of a pin of the second embodiment of the dismantling system according to the invention; Figure 8 is a perspective view of a barb of the second embodiment of the dismantling system according to the invention; FIG. 9 is a perspective view of a buckle of a third embodiment of the dismantling system according to the invention; Figure 10 is a perspective view of a pin of the third embodiment of the dismantling system according to the invention; Figure 11 is a perspective view of a barb of the third embodiment of the dismantling system according to the invention; FIG. 12 is a perspective view of a buckle of a fourth embodiment of the dismantling system according to the invention; Figure 13 is a perspective view of a pin of the fourth embodiment of the dismantling system according to the invention; Figure 14 is a perspective view of a barb of the fourth embodiment of the dismantling system according to the invention; FIG. 15 is a perspective view of a buckle of a fifth embodiment of the dismantling system according to the invention; Figure 16 is a perspective view of a pin of the fifth embodiment of the dismantling system according to the invention; Figure 17 is a perspective view of a barb of the fifth embodiment of the dismantling system according to the invention; FIGS. 18a and 18b are perspective views of a particular variant of a release device embedded in a locking device according to the invention; Figures 19a to 19c are perspective views of a particular variant of a locking device according to the invention; Figure 19d is a perspective view of a particular variant of a pin that can cooperate with the loop of Figure 19a to form a locking device according to the invention; FIGS. 20a and 20b are perspective views of a particular variant of an angular positioning device according to the invention; FIG. 21 is a cutaway top view of a particular variant of a locking device according to the invention.

DETAILED DESCRIPTION OF AT LEAST ONE EMBODIMENT OF THE INVENTION

In the various figures, identical or similar elements bear the same references, possibly with the addition of an index. The description of their structure and function is therefore not systematically repeated.

In what follows, the orientations are the orientations of the figures. In particular, the terms „upper“, „lower“, „left“, „right“, „above“, „below“, „forward“ and „backward“ generally mean with respect to the direction of representation of the figures.

[0022] By "clasp" is meant all types of barb fastener capable of securing two ends of at least one strip.

[0023] By "band" is meant a long, narrow piece of thin, flexible material for transmitting or maintaining stress. Thus, one (or more) band(s), composed(s) based on metal (for example with articulated links) and/or leather and/or polymer and/or textile, can form a strap adjustable in length by means of a clasp for, for example, a suspender, a closure, a fabric, a bracelet, a belt or a harness.

[0024] By "piece of leather goods" is meant all types of leather-based articles such as a bracelet, a bag, a belt, a saddle, for example equestrian, a harness, for example equestrian, etc.

[0025] By "weaving piece", we mean all types of textile-based articles such as fabric, a bag, a garment, a bracelet, a belt, a parachute, etc.

[0026] By "piece of jewelry", we mean all types of decorative or ornamental items that may include a non-precious ceremonial stone such as a bracelet, a necklace, a belt, etc.

[0027] By "piece of jewelry", we mean all types of decorative or ornamental items that may include a precious or semi-precious stone such as a bracelet, a necklace, a belt, etc.

[0028] By "timepiece" is meant all types of instruments for measuring or counting time such as clocks, clocks, watches, etc.

The invention relates to a clasp 1 in particular for an article comprising a strap formed of at least one strip in order to secure two ends of the strip. In no way limiting, the article can thus form all or part of a piece of leather goods, a piece of weaving, a piece of jewelry, a piece of jewelry or a timepiece such as a satchel strap or closure, a handbag strap or closure, a parachute fabric strap, a bracelet, a belt or equestrian harness.

Typically, in the examples illustrated in Figures 1 to 3, one can see a clasp 1 according to the invention. It comprises a pin 3, a buckle 5 and a barb 7. The clasp 1 is arranged to secure two ends 8, 10 of at least one band 9. More specifically, a first end 8 of the band 9 is intended to form a flap 11 to receive the pin 3 in order to attach the clasp 1 thereto. The second end 10 comprises holes 12 (only one visible in the example of FIG. 1) intended to cooperate with the barb 7 to block the second end 10 in the clasp 1 at each hole 12 in order to adapt the length of the strip 9.

Of course, the ends 8, 10 can belong to a single band 9 as for a belt (not shown) or to several bands such as for example two bands 9a, 9b, each being, on the one hand, attached to the housing 4 of a timepiece 2 and, on the other hand, respectively forming the first 8 and second 10 ends (example illustrated in FIG. 1).

The pin 3 is intended to be pivotally mounted about a pivot axis A in the flap 11 of the first end 8 of the band 9 in order to make the buckle 5 and the barb 7 pivot relative to the end 8 of the strip 9. It can be seen that the end 8 of the strip 9 comprises a recess 13 at the median level of the flap 11, such as for example a removal of material, intended to receive the extra thickness of the barb 7 with respect to to that of the pin 3. It is therefore understood that once the pin 3 has passed respectively through the barb 7 and the flap 11, the barb 7 is blocked between each eyelet of the flap 11, that is to say in the setback 13.

The clasp 1 preferably comprises an open loop 5 substantially U-shaped, that is to say comprising two flanges 14a, 14c substantially parallel each connected to a base 14b substantially perpendicularly. Loop 5 is preferably closed by mounting pin 3 between flanges 14a, 14c. In addition, the barb 7, when the clasp 1 secures the two ends 8, 10 of the band 9, is intended to be positioned, that is to say assembled, between the pin 3 and the base 14b and more particularly between the recess 13 of the strip 9 and the recess 15 of the base 14b.

[0034] Advantageously according to the invention, the clasp 1 further comprises a system 21 for dismantling the pin 3 controlled by the rotational movement of the barb 7 with respect to the pivot axis A in order to disassemble without tools the pin 3 relative to the other parts of clasp 1.

It is therefore understood that the dismantling system 21 uses a part (the barb 7) of the clasp 1 as a grip to control the disassembly of the pin 3, thus avoiding the use of a separate and/or dedicated tool. In addition, a simple rotation of the barb 7 according to the angle α therefore makes it possible to quickly control the disassembly of the pin 3. It is therefore understood that externally, the pin 3 according to the invention can be very little visible in comparison with a dismantling of the screw type as mentioned above.

In the example illustrated in Figures 2 and 3, the barb 7 passes from a position B (free end of the barb 7 placed in the recess 15, Figure 2) to a position C (barb 7 returned below the loop 5, Figure 3), that is to say performs a rotation through an angle α substantially equal to 330 degrees (see Figure 3). Of course, such an angle α substantially equal to 330 degrees is only one example. The dismantling system 21 is preferentially inactive over a predetermined angular range α of movement of the barb 7 to allow the cooperation of the barb 7 with the hole 12 of the second ends 10 of the strip 9 over the predetermined range of movement. Then, once the movement of the barb 7 has exceeded the predetermined range, that is to say reaches position C in the case of the example of FIG. active in order to be able to disassemble the pin 3 in relation to the other parts of the clasp 1 without tools.

Preferably, between the initial position B of the barb 7 pressed against the base 14b of the loop 5 and that C of the end of the predetermined angular range α, the barb 7 travels at least 180 degrees, i.e. i.e. for example 180 degrees, 190 degrees, 200 degrees, 210 degrees, 220 degrees, 230 degrees, 240 degrees, 250 degrees, 260 degrees, 270 degrees, 280 degrees, 290 degrees, 300 degrees, 320 degrees or 330 degrees so not to hinder the usual cooperation between the barb 7 and the hole 12 of the second end 10 of the band 9. Of course, in the opposite way, by holding the barb 7 according to the position C, it is possible to adjust the end of the pin 3 in order to respectively slide in the flange 14c, a first eyelet of the flap 11, the barb 7, a second eyelet of the flap 11 and the flange 14a, then to reposition the barb 7 in position B to be able to again use clasp 1.

Embodiments and variants will now be explained to better understand the invention. Whatever the embodiment or variant, the dismantling system 21 may comprise an angular positioning device 23, a locking device 25 and/or a release device 27 . The device 23 is intended to orient the pin 3, by the at least temporary coupling of the latter with the barb 7, in order to position the pin 3 in a predetermined manner when the movement of the barb 7 has exceeded the predetermined angular range α , i.e. has passed position C.

The device 25 is intended to block the pin 3 in the loop 5 in order to selectively maintain the loop 5 on the first end 8 of the strip 9. It is understood that, at least over the predetermined angular range α of the barb 7, the blocking device 25 prevents relative movement between the pin 3 and the loop 5. Finally, the device 27 is intended to disengage the pin 3 with respect to the loop 5 in order to selectively protrude one end of the pin 3 relative to the buckle 5 to allow it to be gripped when the barb 7 has exceeded its predetermined angular range α, that is to say has exceeded position C, and thus facilitate the dismantling of the pin 3.

In a first embodiment illustrated in the example of Figures 2 to 5, the dismantling system 21 comprises an angular positioning device 23, a locking device 25 and a release device 27. The angular positioning device 23 comprises a permanent coupling of the pin 3 and the barb 7 when the pin 3 is assembled with the other parts of the clasp 1. The angular positioning device 23 thus comprises complementary geometries 18, 19 formed respectively on the pin 3 and on the barb 7. It is then understood that the pin 3 and the barb 7 will be integral in rotation throughout the predetermined angular range α but free in translation in the direction of disassembly of the pin 3. indeed, the stop 20 is preferentially positioned in order to limit the insertion of the pin 3 into the slot 17 of the barb 7.

The locking device 25 of the first embodiment comprises a connection 29 of the pivot type between one end of the pin 3 and an opening 16a formed in the flange 14a of the loop 5. Indeed, a lug 30 of the connection of the pivot type is mounted for example in one piece on the internal diameter of the opening 16a of the flange 14a. In addition, a cam path 31 intended to cooperate with the lug 30 is made in the outer surface of the pin 3. It comprises an oblique cam path 31a extended by a perpendicular cam path 31b.

It is understood that, over the predetermined angular range α of the barb 7, the lug 30 is in the perpendicular path 31b of the cam, which is substantially perpendicular to the axis A of pivoting, in which the pin 3 can pivot without the possibility of disengaging from the opening 16a of the flange 14a. Then, past the predetermined angular range α, the lug 30 passes into the oblique path 31a of the cam in order to unlock according to a progressive helical movement of the pin 3 of the opening 16a of the flange 14a.

The release device 27 of the first embodiment comprises a cam 33 - cam follower 34 assembly requiring one end of the pin 3 to be moved away from the loop 5. The cam 33 comprises a cam plane 33a and a cam slope 33b. It is understood that, over the predetermined angular range α of the barb 7, the cam follower 34 slides along the cam plane 33a. Then, past the predetermined angular range α, the cam follower 34 must climb the cam slope 33b by forcing the cover 6 at the end of the pin 3 to project relative to the flange 14c.

[0044] It is therefore understood that the dismantling system 21 according to the first embodiment uses the barb 7 of the clasp 1 as a grip to control the disassembly of the pin 3, thus avoiding the use of a separate tool and/or dedicated. In addition, a simple rotation of the barb 7 according to the angle α therefore makes it possible to quickly control the disassembly of the pin 3. It is therefore understood that externally, the pin 3 according to the first embodiment of the invention is little visible over the predetermined angular range α of the barb 7. Indeed, the cover 6 of the pin 3 is integrated into the recess of the cam 33 around the opening 16c of the flange 14c over the predetermined angular range α and spring , that is to say protrudes from flange 14c, when barb 7 protrudes from position C.

In a second embodiment illustrated in the example of Figures 6 to 8, the dismantling system 21 comprises an angular positioning device 23, a locking device 25 and a release device 27. In the example illustrated in Figures 7 and 8, one can see a cam path 36 cut into the pin 3 intended to cooperate with a lug 35 mounted for example in one piece on the internal diameter of a slot 17 of the barb 7. The cam path 36 comprises a parallel cam path 36a extended by an oblique cam path 36b, itself extended by a perpendicular cam path 36c.

It is understood in this second embodiment that the devices 23, 27 for angular positioning and release are nested. Indeed, over the predetermined angular range α of the barb 7, the locking device 25 is formed by the lug 35 in the perpendicular cam path 36c, which is substantially perpendicular to the pivot axis A, in which the pin 3 can pivot without the possibility of disengaging from the slot 17 of the barb 7. The locking device 25 further comprises complementary geometries 39, 38 formed respectively on one end of the pin 3 and on an opening 16a provided in the flange 14a of the loop 5. It is understood that the rotation of the pin 3 in the flange is prevented to favor the rotation of the barb 7 along the perpendicular path 36c over the predetermined angular range α while allowing a translation in the direction dismantling of pin 3 past the predetermined angular range α.

Then, past the predetermined angular range α, the nested angular positioning and release devices 23, 27 also include the lug 35 which passes in the oblique cam path 36b in order to unlock according to a progressive helical movement of the pin 3 of the slot 17 of the barb 7 then, in the parallel cam path 36a in order to release the pin 3 from the other parts of the clasp 1. It is therefore immediate that the pin 3 and the barb 7 are not integral in rotation only temporarily, that is to say when the lug 35 of the barb 7 is present in the parallel path 36a of the cam or the oblique path 36b of the cam of the pin 3. More precisely, the barb 7 being blocked between the eyelets of flap 11 of band 9, the progressive helical movement of pin 3 relative to slot 17 of barb 7 will gradually cause pin 3 to protrude from opening 16c of buckle 5.

It is therefore understood that the dismantling system 21 according to the second embodiment uses the barb 7 of the clasp 1 as a grip to control the disassembly of the pin 3, thus avoiding the use of a separate tool and/or dedicated. In addition, a simple rotation of the barb 7 according to the angle α therefore makes it possible to quickly control the disassembly of the pin 3. It is therefore understood that externally, the pin 3 according to the second embodiment of the invention is little visible over the predetermined angular range α of the barb 7. In fact, the pin 3 is integrated into the loop 5 over the predetermined angular range α and comes out, that is to say protrudes from the flange 14c, when the barb 7 protrudes from position C.

In a third embodiment illustrated in the example of Figures 9 to 11, the dismantling system 21 comprises a device 23 for angular positioning and a device 25 for locking. The angular positioning device 23 comprises a permanent coupling of the pin 3 and the barb 7 when the pin 3 is assembled with the other parts of the clasp 1. The angular positioning device 23 thus comprises complementary geometries 18, 19 formed respectively on the pin 3 and on the barb 7. It is then understood that the pin 3 and the barb 7 will be integral in rotation throughout the predetermined angular range α but free in translation in the direction of disassembly of the pin 3. indeed, the stop 20 is preferentially positioned in order to limit the insertion of the pin 3 into the slot 17 of the barb 7.

The locking device 25 of the third embodiment comprises a connection 29 of the pivot type between one end of the pin 3 and an opening 16a formed in the flange 14a of the buckle 5. Indeed, a lug 30 of the connection of the pivot type is mounted for example in one piece on the internal diameter of the opening 16a of the flange 14a. In addition, a cam track 31 intended to cooperate with the lug 30 is formed in the outer surface of the pin 3. It comprises a parallel cam track 31c extended by a perpendicular cam track 31b.

It is understood that, over the predetermined angular range α of the barb 7, the lug 30 is in the perpendicular path 31b of the cam, which is substantially perpendicular to the axis A of pivoting, in which the pin 3 can pivot without the possibility of disengaging from the opening 16a of the flange 14a. Then, past the predetermined angular range α, the lug 30 passes into the parallel cam path 31b in order to release the pin 3 from the other parts of the clasp 1.

The dismantling system 21 according to the third embodiment therefore uses the barb 7 of the clasp 1 as a grip to control the disassembly of the pin 3, thus avoiding the use of a separate and/or dedicated tool. In addition, a simple rotation of the barb 7 according to the angle α therefore makes it possible to quickly control the disassembly of the pin 3. It is therefore understood that externally, the pin 3 according to the third embodiment of the invention is little visible over the predetermined angular range α of the barb 7. In fact, the pin 3 is integrated into the loop 5 over the predetermined angular range α and comes out, that is to say protrudes from the flange 14c, when the barb 7 protrudes from position C.

The third embodiment can therefore be considered as a first embodiment with a variant of angular positioning device 23 and an absence of release device 27 leading to the helical release movement being rendered useless, i.e. ie the replacement of an oblique cam path 31a by a parallel cam path 31c.

In a fourth embodiment illustrated in the example of Figures 12 to 14, the dismantling system 21 comprises a device 23 for angular positioning and a device 25 for locking. The angular positioning device 23 comprises a temporary coupling of the pin 3 and the barb 7 when the pin 3 is assembled with the other parts of the clasp 1. The angular positioning device 23 thus comprises complementary geometries 18, 19 formed respectively on the pin 3 and on the barb 7 so that the pin 3 and the barb 7 are integral in rotation outside the predetermined angular range α but free in translation in the direction of disassembly of the pin 3. Indeed, the stop 20 is preferably positioned in order to limit the insertion of the pin 3 into the slot 17 of the barb 7.

This fourth embodiment comprises devices 23, 25 for angular positioning and blocking which are nested. Indeed, over the predetermined angular range α of the barb 7, the locking device 25 is formed by the lug 35 in the perpendicular cam path 36c, which is substantially perpendicular to the pivot axis A, in which the pin 3 can pivot without the possibility of disengaging from the slot 17 of the barb 7. The locking device 25 further comprises complementary geometries 39, 38 formed respectively on one end of the pin 3 and on an opening 16c formed in the flange 14c of the loop 5. It is understood that the rotation of the pin 3 in the flange 14c is prevented to favor the rotation of the barb 7 along the perpendicular path 36c over the predetermined angular range α while allowing a translation in the direction of removal of pin 3 past the predetermined angular range α.

Indeed, the perpendicular cam path 36c ends, at one of its ends, on the complementary geometry 19 of the pin 3. In this way, the complementary geometry 18 of the angular positioning device 23 and the lug 35 of the blocking device 25 are therefore combined as illustrated in the example of FIG. 14. Consequently, past the predetermined angular range α, the lug 35 of the blocking device 25 becomes the complementary geometry 18 of the angular positioning device 23 in order to release the pin 3 from the other parts of the clasp 1 by being able to use the complementary geometry 39 of the locking device 25 as a gripping element.

[0057] It is therefore understood that the dismantling system 21 according to the fourth embodiment uses the barb 7 of the clasp 1 as a grip to control the disassembly of the pin 3, thus avoiding the use of a separate tool and/or dedicated. In addition, a simple rotation of the barb 7 according to the angle α therefore makes it possible to quickly control the disassembly of the pin 3.

The fourth embodiment can therefore be considered as a second embodiment with a variant of blocking device 25 and an absence of release device 27 leading to the helical release movement being rendered useless, that is to say say the removal of an oblique cam path 36b.

In a fifth embodiment illustrated in the example of Figures 15 to 17, the dismantling system 21 comprises an angular positioning device 23, a locking device 25 and a release device 27. The angular positioning device 23 comprises a permanent coupling of the pin 3 and the barb 7 when the pin 3 is assembled with the other parts of the clasp 1. The angular positioning device 23 thus comprises complementary geometries 18, 19 formed respectively on the pin 3 and on the barb 7 (identical to that of the first or fourth embodiment). It is then understood that the pin 3 and the barb 7 will be integral in rotation throughout the predetermined angular range α but free in translation in the direction of disassembly of the pin 3. Indeed, the stop 20 is preferably positioned in order to limit the penetration of pin 3 into slot 17 of barb 7.

The locking device 25 of the fifth embodiment comprises a connection 29 of the pivot type between one end of the pin 3 and an opening 16a formed in the flange 14a of the buckle 5. Indeed, a lug 30 of the connection of the pivot type is mounted for example in one piece on the outer surface of the pin 3. In addition, a cam path 31 intended to cooperate with the lug 30 is made in and around the internal diameter of the opening 16a of the flange 14a. It comprises a parallel cam path 31c extended by a perpendicular cam path 31b.

It is understood that, over the predetermined angular range α of the barb 7, the lug 30 is in the perpendicular path 31b of the cam, which is substantially perpendicular to the axis A of pivoting, in which the pin 3 can pivot without the possibility of disengaging from the opening 16a of the flange 14a. Then, past the predetermined angular range α, the lug 30 passes into the parallel cam path 31c in order to release the pin 3 from the opening 16a of the flange 14a.

The release device 27 of the fifth embodiment comprises a cam 33 - cam follower 34 assembly requiring one end of the pin 3 to be moved away from the loop 5. The cam 33 comprises a cam plane 33a and a cam slope 33b. It is understood that, over the predetermined angular range α of the barb 7, the cam follower 34 slides along the cam plane 33a. Then, past the predetermined angular range α, the cam follower 34 must climb the cam slope 33b by forcing the pin 3 to project relative to the flange 14c.

[0063] It is therefore understood that the dismantling system 21 according to the fifth embodiment uses the barb 7 of the clasp 1 as a grip to control the disassembly of the pin 3, thus avoiding the use of a separate tool and/or dedicated. In addition, a simple rotation of the barb 7 according to the angle α therefore makes it possible to quickly control the disassembly of the pin 3. The fifth embodiment can therefore be considered as a first embodiment with a variant of device 25 of blockage and an absence of cover 6 leading to make visible the device 27 release.

The invention is not limited to the embodiments and variants presented and other embodiments and variants will appear clearly to those skilled in the art. It is possible that the dimensions and / or geometries may differ depending on the type of angular positioning device 23 used and / or the type of locking device 25 used and / or the type of release device 27 used but also the possible nesting of one of these devices 23, 25, 29 with at least one other 25, 29, 23.

In no way limiting, Figures 18a and 18b show a variant of a release device 27 nested in a locking device 25 which is within the scope of the invention. The locking device 25 comprises a link 29 of the pivot type between one end of the pin 3 and an opening 16c formed in the flange 14c of the buckle 5. Indeed, a lug 30 of the link 29 of the pivot type is mounted for example in one piece on the outer surface of the pin 3. In addition, a cam path 31 intended to cooperate with the lug 30 is made around the internal diameter of the opening 16c of the flange 14c. It comprises a perpendicular cam path 31b.

It is understood that, over the predetermined angular range α of the barb 7, the lug 30 is in the perpendicular path 31b of the cam, which is substantially perpendicular to the axis A of pivoting, in which the pin 3 can pivot without the possibility of disengaging from the opening 16c of the flange 14c. Then, past the predetermined angular range α, the lug 30 leaves the perpendicular path 31b of the cam in order to release the pin 3 from the opening 16c of the flange 14c.

The variant comprises a release device 27 which is nested with the locking device 25 . The release device 27 comprises a cam 33 - cam follower 34 assembly forcing one end of the pin 3 to be moved away from the buckle 5. The cam 33, mounted on the flange 14c, comprises a cam plane 33a and a slope 33b cam. Thus, the perpendicular path 31b of the cam ends, at one of its ends, on the plane 33a of the cam of the flange 14c then is extended by the slope 33b of the cam. In this way, the lug 30 of the blocking device 25 and the cam follower 34 of the release device 27 therefore coincide as illustrated in the example of FIG. 18a. Consequently, past the predetermined angular range α, the lug 30 of the locking device 25 becomes the cam follower 34 of the release device 27 in order to release and cause the pin 3 to protrude from the other parts of the clasp 1 while being able to use the cover 6 pin 3 as gripping element.

It is therefore understood that the dismantling system 21 according to this variant of a release device 27 nested in a locking device 25 associated with an angular positioning device 23 retains the same technical advantages and effects as the embodiments explained. above.

According to another example, FIGS. 19a to 19c show a variant of a locking device 25 which falls within the scope of the invention. The blocking device 25 comprises at least one fixing 40 of the snap-fit type between one end of the pin 3 and an opening 16a formed in the flange 14a of the buckle 5. More specifically, in the example of FIG. 19c, the pin 3 has a groove 41 intended to receive an elastic element 42. The groove 41 has a peripheral groove 41a and a perpendicular recess 41b.

The elastic element 42 is intended to be mounted on the pin 3 in an elastic manner in order to form a peripheral abutment along a larger diameter than the outer surface of the pin 3. However, by elastic deformation beyond a predetermined constraint, the external diameter of the elastic element 42 can retract at least partially into the groove 41. To this end, the elastic element 42 comprises an annular part 42a over approximately 270 degrees intended to be received in the groove 41a peripheral and extended by ends 42b bent towards the interior space of the annular part 42a intended to cooperate with the perpendicular recess 41b to attach the elastic element 42 to the pin 3. In the example illustrated in FIG. 19b , the ends 42b are substantially symmetrical relative to each other and have a generally L-shaped extension of each end of the annular part 42a.

The flange 14a of the loop 5 has a reduction in diameter on the internal diameter of its opening 16a in order to force the elastic element 42 to deform in order to be able to enter the pin 3 into the opening 16a. In the example illustrated in FIG. 19a, the reduction in diameter is formed by a collar 43 in the form of a ring extending around the axis A of pivoting.

It is understood that this variant is intended to prevent a translation along the axis A in the direction of assembly and disassembly of the pin 3 with respect to the opening 16a below a predetermined constraint. This variant may in fact be sufficient to maintain the pin 3 in the flange 14a, in particular in the absence of a projecting part of the pin 3 with respect to the buckle 5. The system 21 for dismantling according to this variant of a device 25 for locking associated with an angular positioning device 23 (and, optionally, a release device 27) therefore retains the same advantages and technical effects as the embodiments explained above.

Another example of a variant of the locking device 25 according to the invention using a fixing 40 of the snap-fit type is presented in relation to FIGS. 19a and 19d. The blocking device 25 comprises at least one fixing 40 of the elastic interlocking type between one end of the pin 3 and an opening 16a made in the flange 14a of the buckle 5.

[0074] More specifically, in the example of Figure 19d, the end of the pin 3 has two elastic arms 44a, 44b in order to form two elastic hooks at the end of the pin 3 capable of being attached in the opening 16a formed in the flange 14a of the loop 5. However, by elastic deformation beyond a predetermined constraint, the elastic arms 44a, 44b can retract, that is to say approach one the other.

[0075] To this end, each elastic arm 44a, 44b comprises an elongated body 45a, 45b cantilevered from the rest of the pin 3 in order to allow radial movement, that is to say whose free end is capable of moving away from or approaching the pivot axis A. In addition, near the free end of each cantilevered elongated body 45a, 45b, a lug 46a, 46b is provided to form a blocking space 47a, 47b in which the flange 14a of the buckle 5 will be retained. In the example illustrated in FIG. 19d, the elastic arms 44a, 44b are symmetrical with respect to a substantially horizontal plane containing the pivot axis A.

The flange 14a of the loop 5 has a reduction in diameter on the internal diameter of its opening 16a in order to force each elastic arm 44a, 44b to deform in order to be able to enter the pin 3 into the opening 16a. In the example illustrated in FIG. 19a, the reduction in diameter is formed by a collar 43 in the form of a ring extending around the axis A of pivoting.

It is understood that this variant is intended to prevent a translation along the axis A in the direction of assembly and disassembly of the pin 3 with respect to the opening 16a below a predetermined constraint. In the example of FIG. 19d, the deformation of the pin 3 is better guided in the direction of assembly thanks to the partially tapered portion of the lugs 46a, 46b. Indeed, in the direction of disassembly, the collar 43 retained in each blocking space 47a, 47b will come into contact with the shoulders of the lugs 46a, 46b, that is to say two substantially perpendicular surfaces. It is understood that the effort required to remove the pin 3 is voluntarily higher to hold the parts together during the usual use of the clasp 1. The dismantling system 21 according to this variant of a locking device 25 associated with an angular positioning device 23 (and, optionally, a release device 27) therefore retains the same advantages and technical effects as the embodiments explained above.

Another example of a variant of locking device 25 according to the invention using a fixing 40 of the snap-fit type is also presented in relation to FIG. 21. The locking device 25 comprises at least one fixing 40 of the type with elastic fitting between one end of pin 3 and a sleeve 48 mounted in an opening 16a made in flange 14a of buckle 5.

More specifically, in the example of Figure 21, the end of the pin 3 has two elastic arms 44a, 44b in order to form two elastic hooks at the end of the pin 3 capable of being attached in the sleeve 48 mounted in the opening 16a formed in the flange 14a of the loop 5. However, by elastic deformation beyond a predetermined constraint, the elastic arms 44a, 44b can retract, that is to say get closer to each other.

[0080] To this end, each elastic arm 44a, 44b comprises an elongated body 45a, 45b cantilevered from the rest of the pin 3 in order to allow radial movement, that is to say whose free end is capable of moving away from or approaching the pivot axis A. In addition, near the free end of each elongated body 45a, 45b is formed a lug 46a, 46b to form a blocking space in which the sleeve 48 will be retained. In the example illustrated in FIG. 21, the elastic arms 44a, 44b are symmetrical with respect to a substantially vertical plane containing the pivot axis A.

The flange 14a of the loop 5 has a reduction in diameter on the internal diameter of its opening 16a in order to receive the sleeve 48. In the example illustrated in FIG. 21, the reduction in diameter is formed by a collar 43 ring-shaped extending around the pivot axis A. The sleeve 48 has a generally tubular shape, one end of which receives the pin 3 and the other end of which is closed by a cover 50 similar to that 6 of the pin 3. The diameter of the cover 50 is larger than the tubular part of the sleeve 48 to serve as a stop against the flange 43 of the opening 16a. In addition, the tubular part of the sleeve 48 itself comprises a reduction in diameter on its internal diameter in order to force each elastic arm 44a, 44b to deform in order to be able to enter the pin 3 into the sleeve 48.

It is understood that this variant is intended to prevent a translation along the axis A in the direction of assembly and disassembly of the pin 3 with respect to the opening 16a below a predetermined constraint. In the example of FIG. 21, the deformation of the pin 3 is both guided in the direction of assembly and in the direction of disassembly thanks to partially tapered portions of the lugs 46a, 46b on each side. It is understood that the effort required to pull out the pin 3 is deliberately identical or similar to that for adjusting the pin 3 in relation to the other parts of the clasp 1.

The dismantling system 21 according to this variant of the locking device 25 further comprises an angular positioning device 23 comprising a permanent coupling of the pin 3 and the barb 7 when the pin 3 is assembled with the other parts of the clasp 1. The angular positioning device 23 is similar to the variant of FIGS. 2 to 5 and thus comprises complementary geometries formed respectively on the pin 3 and on the barb 7 (only the corresponding shape 19 of pin 3 is visible in FIG. 21). Finally, the dismantling system 21 according to this variant of the locking device 25 further comprises a release device 27 similar to the variant of FIGS. relative to the loop 5 (only the plane 33a of cam 33 is visible in Figure 21).

The system 21 therefore retains the same advantages and technical effects as the embodiments explained above. In addition, it is immediate that the cover 50 of the sleeve 48 and the cover 6 of the pin 3 bring a homogeneous external visual appearance to the clasp 1 and limit the accumulation of particles by absence of recess without being able to suspect that the clasp 1 is removable. Incidentally, the clasp 1 becomes safer and more robust. Indeed, on the one hand, the dismantling of the pin 3 is made difficult by the absence of gripping and, on the other hand, neither the strip 9 nor the loop 5 being in contact with the device 25 for blocking , it is more difficult to accidentally transmit a stress that could cause mechanical damage or unwanted dismantling. Finally, the external diameter of the tubular part of the sleeve 48 provides continuity with that of the pin 3 (set aside by the corresponding geometry 19) allowing better stabilization of the strip 9 by homogeneous filling of the flap 11.

According to yet another example, Figures 20a and 20b show a variant of an angular positioning device 23 which falls within the scope of the invention. The angular positioning device 23 comprises a permanent coupling of the pin 3 and the barb 7 when the pin 3 is assembled with the other parts of the clasp 1. The angular positioning device 23 thus comprises complementary geometries 18, 19 formed respectively on the pin 3 and on the barb 7. In this variant, the complementary geometries 18, 19 make it possible to secure the pin 3 in rotation with the barb 7 but also to limit the penetration of the first 3 into the second 7. Thus , the geometry 18 complementary to the slot 17 of the barb 7 has an asymmetrical and non-constant section. The asymmetry advantageously makes it possible, according to the invention, to avoid any relative displacement in rotation between the pin 3 and the barb 7. The non-constant section, that is to say the fact that the section is greater at the entrance of the slot 17 than at the exit, allows, by abutment of the complementary geometries 18, 19, a predetermined limitation of the penetration of the pin 3 into the slot 17 of the barb 7.

[0086] It is understood that the pin 3 and the barb 7 will be integral in rotation throughout the predetermined angular range α but free in translation in the direction of disassembly of the pin 3. It is therefore understood that the disassembly system 21 according to this variant of an angular positioning device 23 associated with a blocking device 25 (and, possibly, a release device 27) therefore retains the same advantages and technical effects as the embodiments explained above.

More generally, it is immediate that the embodiments and variants can be combined with each other while retaining the same advantages and technical effects of the dismantling system 21 explained above. By way of example, the pins 3 can thus all receive a cover 6 like that of the first embodiment intended to hide all or part of the devices 23, 25 and/or 27 in order to better integrate the pin 3 aesthetically into the buckle 5. According to another example, a release device 27 could be added to the third embodiment or to the fourth embodiment to facilitate gripping of pin 3 when barb 7 passes position C.

It is also possible that the dedicated release device 27 is unnecessary when the locking device 25 already allows a release function. Thus, for example in the first embodiment, it is apparent that the oblique path 31a of the blocking device 25 already makes it possible to impart a helical movement to the pin 3 capable of causing the cover 6 to protrude from the flange 14c. It is understood that, for the sake of economy, the release device 27 could be removed while having a release effect (less significant than with the release device 27) when the locking device 25 is unlocked.

Finally, although Figure 1 shows a timepiece 2, the invention cannot be limited to the field of watchmaking. Thus, the invention could also be applied in other fields such as, for example, jewelry, jewelry, leather goods or weaving as explained above.

Claims (15)

1. Clasp (1) for securing two ends (8, 10) of at least one strip (9, 9a, 9b) comprising a pin (3) intended to be pivotally mounted about a pivot axis (A) on a first (8) of the two ends (8, 10) of said at least one strip (9, 9a, 9b), an open substantially U-shaped loop (5) which is closed by mounting the pin (3) between two substantially parallel flanges (14a, 14c) of its U-shape, a barb (7) assembled between the pin (3) and a base (14b) of the U-shape of the buckle (5) so as to be able to cooperate with a hole (12) in the second (10) of the two ends (8, 10) of said at least one strip (9, 9a, 9b) to secure the two ends (8, 10) of said at least one strip ( 9, 9a, 9b), characterized in that it comprises a system (21) for removing the pin (3) controlled by the rotational movement of the barb (7) with respect to the axis (A) of pivoting in order to disassemble the pin (3) without tools relative to or to the other parts of the clasp (1). 2. Clasp (1) according to the preceding claim, wherein the dismantling system (21) is inactive over a predetermined range (α) of movement of the barb (7) to allow cooperation of the barb (7) with the hole (12) of the second (10) of the two ends (8, 10) of said at least one strip (9, 9a, 9b) over the predetermined displacement range (α), then active once the displacement of the barb (7) has exceeded the predetermined range (α) in order to be able to disassemble the pin (3) without tools with respect to the other parts of the clasp (1). 3. Clasp (1) according to any one of the preceding claims, in which the dismantling system (21) comprises a device (23) for the angular positioning of the pin (3) by the at least temporary coupling of the latter (3 ) with the barb (7). 4. Clasp (1) according to the preceding claim, wherein the device (23) for angular positioning comprises a cam path (36) hollowed out in the pin (3) cooperating with a lug (35) mounted on the internal diameter of a light (17) of the barb (7). 5. Clasp (1) according to claim 3, wherein the coupling of the pin (3) and the barb (7) is permanent when the first (3) is assembled with the other parts of the clasp (1). 6. Clasp (1) according to the preceding claim, wherein the permanent coupling is obtained by complementary geometries (18, 19) formed respectively on the pin (3) and on the barb (7). 7. Clasp (1) according to any one of the preceding claims, wherein the dismantling system (21) comprises a device (25) for locking the pin (3) in the loop (5) in order to hold the loop ( 5) on the first (8) of the two ends (8, 10) of said at least one strip (9, 9a, 9b). 8. Clasp (1) according to the preceding claim, wherein the locking device (25) comprises at least one connection (29) of the pivot type between one end of the pin (3) and an opening (16a, 16c) provided in one of the two substantially parallel flanges (14a, 14c) of the loop (5). 9. Clasp (1) according to claim 7, wherein the locking device (25) comprises complementary geometries (38, 39) formed respectively on one end of the pin (3) and on an opening (16a, 16c) provided in one of the two substantially parallel flanges (14a, 14c) of the loop (5). 10. Clasp (1) according to claim 7, in which the locking device (25) comprises at least one fixing (40) of the snap-fit type between one end of the pin (3) and an opening (16a, 16c) arranged in one of the two substantially parallel flanges (14a, 14c) of the loop (5). 11. Clasp (1) according to claim 7, in which the blocking device (25) comprises at least one fixing (40) of the elastic interlocking type between one end of the pin (3) and a sleeve (48) mounted in an opening (16a, 16c) formed in one of the two substantially parallel flanges (14a, 14c) of the loop (5). 12. Clasp (1) according to any one of the preceding claims, in which the dismantling system (21) comprises a device (27) for disengaging the pin (3) with respect to the buckle (5) in order to protrude one end of the pin (3) relative to the loop (5) to allow its gripping. 13. Clasp (1) according to the preceding claim, wherein the release device (27) comprises at least one cam assembly (33, 33a, 33b) - cam follower (34) forcing one end of the pin (3 ) with respect to the loop (5). 14. Article (2) comprising a strap formed of at least one strip (9, 9a, 9b), characterized in that it includes the clasp (1) according to one of the preceding claims in order to secure two ends (8, 10) of the strap. 15. Article (2) according to the preceding claim, forming all or part of a piece of leather goods, a piece of weaving, a piece of jewelry, a piece of jewelry or a piece (2) of watchmaking.