JP2015000339A - Clasp for piece of jewellery or wristwatch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clasp with an excellent security lock, which can be manufactured by economical manufacturing methods simpler than the prior art.SOLUTION: A clasp 100 includes a stretcher like structure 1 with a first housing 200 in which a first push-piece 6 and a second push-piece 7 can be moved, the first push-piece 6 and second push-piece 7 being held by closure plates 8, 9. The clasp 100 includes resilient locking elements 10 for closure plates 8, 9. The resilient locking elements 10 include push-buttons 600 and are held in the stretcher like structure 1. In addition, the resilient locking elements 10 are arranged in a compressed position to allow the closure plates 8, 9 to move and in a relaxed position to immobilize the closure plates 8, 9 in a closure position.

Description

  The present invention relates to a clasp for a jewelry or wristwatch, the clasp comprising a stretcher-like structure having a first housing, in which the first bearing surface on the first bearing surface for the elastic restoring means is At least one closing plate that is movable relative to each other, the first pushing part and the second pushing part being able to assume a closed position in the second housing Is held in the first housing.

  The present invention also relates to a bracelet having a clasp according to the present invention.

  The invention also relates to a watch comprising this type of bracelet.

  The present invention relates to the field of watchmaking and jewelry, and more particularly to the field of watches and bracelets.

  Numerous variations of clasps are used in watchmaking and jewelry to open and close bracelets, particularly wristwatch bracelets. These clasps can hold the bracelet strands together in a connecting position that forms the actual fastening. The bracelet strands are generally hinged to the ends of the lockable folding arms, which are hinged to the ends of the stretcher structure, which is complementary to the ends of the folding arm. With mechanical locking means. The arm can be unlocked by applying a force, or preferably using a pushing element. These clasps generally have push-in parts that can move in the opposite direction with respect to the stretcher-like structure to lock the folding arm when the clasp is opened and closed.

  Patent Document 1 discloses a clasp for a folding bracelet having a pressing part, which is formed by an installation unit for two opposing pressing parts and a leaf spring for moving the pressing parts. And a generally H-shaped stretcher-shaped structure having a machined outer shape. The support plate holds the pusher, leaf spring, and hooking system against the stretcher structure. The support plate is also H-shaped, which has two symmetrical recesses delimited by parallel extensions for mounting the arm, the arm opposite the hinge portion, Has a hinged assembly unit for some. The H-shape of the stretcher structure and support plate generally contributes to machining complexity and is more expensive due to the presence of four housings for precision screws. These holes must be centered and aligned with high accuracy on an H-shaped parallel bar, and the placement of leaf springs on the H-shaped lateral bar is extremely complex, It must be possible to perform the installation and operation of the two push-in parts and the assembly of the two parallel extensions for installing a part of the bracelet. High precision precision screws with small dimensions (to reduce play between the pusher part and the hooking system) also increase the cost of machining.

  U.S. Patent No. 6,057,051 discloses a watch clasp that includes two swivel loops that connect a generally H-shaped stretcher structure to a bracelet strand. In order to open this clasp, it is necessary to release the closed loop by pressing hard on a push button comprising a housing for a restoring element formed by a spring. Similar to the clasp described above, the clasp has a generally H-shaped support plate for holding the push button against the stretcher structure, which is also H-shaped. The outer shape of the inner surface of the support plate is configured to hold the spring element on an H-shaped lateral bar. Its complexity and machining costs are similar to those described above. The arrangement and alignment of the spring to accurately position the spring within the push button allows the clasp to be opened and closed by pressing one of the push buttons against the other. This is a complex operation because any play that may occur between the push buttons needs to be reduced.

  Patent Document 3 discloses a clasp including a stretcher-like structure, a folding arm, and a detachable button, and this stretcher-like structure includes two pushing parts, which are used when opening and closing the clasp. The detachable button can be moved in the opposite direction to the compression of the restoring element in order to lock or unlock the stretcher structure. Since this clasp uses a guide element that is inserted in abutment between two restoring elements (springs) and a guide housing for these guide elements, the alignment of the two push-in parts is complicated. High manufacturing accuracy is required to insert the guide element and the housing into the push-in part and to reduce play when the two push-in parts are moved together. During the relative movement of the push-in part against the compression of the two restoring elements, the restoration is carried out so that the position of the guide element in one or the other of the push-in parts is substantially the same for both push-in parts Elements must have the same characteristics.

  In these known clasps, each push-in part moves with a certain amount of play with respect to the moving part formed by the wall of the stretcher-like structure and the support plate. When the movement clearances of both pushing parts are combined, the locking means (especially the hook or groove) of the folding arm and the complementary locking means (especially the groove or hook) of one or the other of the pushing parts are not engaged. The geometry of the support plate is extremely important as it becomes complete. If the clasp lock is inadvertently released or the clasp is inadvertently opened, it may lead to loss of the watch, which is unacceptable for luxury watches. It is impossible to eliminate it.

  The manufacturing difficulties common to the above known inventions are due to minimizing play between the indented parts, but this requires strict manufacturing tolerances and is therefore expensive. On the other hand, there is also a need for a high quality appearance and appeal that characterizes a luxury wristwatch or jewelry.

French Patent No. 2825244 British Patent No. 2340168 European Patent No. 1247469

  The object of the present invention is to devise a clasp with an excellent security lock that can be manufactured by an economical manufacturing method that is simpler than the prior art.

  Accordingly, there is a need for an improved clasp that avoids play between push buttons and an improved opening and closing system.

  In search of a simpler configuration, it should facilitate the manufacture of various parts with smaller dimensions, especially by using simpler and cheaper support and hooking means than precision screws.

  Accordingly, the present invention relates to a clasp for a jewelry or watch, wherein the clasp includes a stretcher-like structure having a first housing, in the first housing, on the first bearing surface for the elastic restoring means, The first pusher part and the second pusher part are movable relative to each other, and the first pusher part and the second pusher part are capable of taking a closed position in the second housing. Retained in the first housing by a closing plate, wherein the clasp includes at least one elastic locking element for the closing plate, the elastic locking element including a push button and in the stretcher structure The elastic locking element is supported and includes a compression position allowing movement of the at least one closure plate, the push button and the least In cooperation with the fourth housing comprising a single closing plate the at least one closing plate, characterized in that it is arranged in a relaxed position fixed to the closed position.

  The invention also relates to a bracelet comprising at least one clasp of this type.

  The invention also relates to a watch comprising this type of bracelet.

  Exemplary implementations of the invention are listed in the following description and illustrated in the accompanying drawings.

FIG. 1 is an exploded perspective view of a clasp with a push-in component according to the present invention having a folding arm hinged to a stretcher structure. FIG. 2 is a top view of the clasp of FIG. 1 along the direction Z in FIG. 1 in a position such that the folding arm is locked in the clasp closed position. FIG. 3 is a cross-sectional view along CC of FIG. 2 of the same clasp having a folding arm in the same locked position as above. FIG. 4 is a cross-sectional view of the same clasp with the folding arm in the same locked position as above, taken along line AA in FIG. FIG. 5 is an end view of the clasp in the closed position along direction D of FIG. FIG. 6 is an end view of the clasp in the closed position along direction E of FIG. FIG. 7 is a perspective view of a wristwatch including a bracelet with a clasp according to the present invention.

  The present invention relates to the field of wristwatches and bracelets for wristwatch making and jewelry.

  More specifically, the present invention relates to a clasp 100 for a jewelry or watch, the clasp 100 including a stretcher-like structure 1 having a first housing 200, in which the elastic restoring means is provided. On the first bearing surface 300 with respect to 40, the first pushing part 6 and the second pushing part 7 are movable relative to each other.

  The first push-in part 6 and the second push-in part 7 are connected to each other by at least one closing plate 8, 9 which can take a closed position in the second housing 400 arranged in the stretcher-like structure 1. 1 in the housing 200.

  According to the invention, this clasp 100 includes at least one elastic locking element 10 for the closing plates 8, 9. This elastic locking element 10 includes a push button 600 that forms a click, is held in the stretcher-like structure 1 and is in a compressed position that allows movement of the at least one closure plate 8, 9, The at least one closing plate 8, 9 is provided in a relaxed position that fixes the at least one closing plate 8, 9 in the closed position by cooperating with the fourth housing 700. Although the present invention is described and illustrated herein as having a male push button 600 that cooperates with a female housing 700, the reverse combination is of course possible, i.e. at the distal end of the elastic locking element 10. Combinations are also possible in which a recessed housing cooperates with a push button in the closing plate 8 or 9. 1-4 show the relative arrangement of the elastic locking element 10, the push button 600 and the fourth housing 700, which represents the fourth housing with reference numeral 80 for the closing plate 8 and reference numeral 90 for the closing plate 9. .

  In order to securely hold each pushing part 6, 7 to the clasp 100, each elastic locking element 10 is advantageously provided with a closing hole 800 (represented by reference numeral 806) or a second pushing provided in the first pushing part 6. The component 7 is accommodated in a closing hole 800 (represented by reference numeral 807), thereby preventing the elastic locking elements 10 from being detached.

  In the preferred manner shown, the clasp 100 holds a first closing plate 8 that cooperates with at least one elastic locking element 10 to hold the first pushing part 6 and a second pushing part 7. A second closing plate 9 cooperating with at least one of the elastic locking elements 10 to do so.

  In the particular non-limiting embodiment shown, the first pusher part 6 includes a single extension 306a that slides across the first bearing surface 300 of the stretcher structure, Moreover, let the two expansion | extension part 307a arrange | positioned at the U-shape with which the 2nd pushing component 7 is provided be a frame. Here, the first closing plate 8 has a single fourth housing 700 (denoted by reference numeral 80) cooperating with a single elastic locking element 10, and each cooperating with a single elastic locking element 10. Four fourth housings 700 (represented by reference numeral 90).

  Preferably, the first closing plate 8 restricts the movement of the first pushing part 6 towards the center of the stretcher-like structure 1, and the second closing plate 9 is the second towards the center of the stretcher-like structure 1. The movement of the push-in part 7 is limited.

  In the preferred embodiment shown, the second housing 400 provided in the stretcher-like structure 1 for receiving each closing plate 8, 9 in the closed position is formed by the inclined housings 28, 29, these inclined housings 28, 29. Are arranged to cooperate in a complementary manner with the slanted hooks 81, 91 of the closure plates 8, 9. Accordingly, the closing plates 8, 9 are arranged in the central region of the stretcher-like structure 1 and then inserted into the laterally inclined housings and arranged on each side until contact with the push button 600 is achieved. . These push buttons are then squeezed into each elastic locking element 10 until they reach their closed position, in which the push buttons 600 can protrude into the fourth housing 700, male and female. The ramps cooperate in a complementary manner.

  In this non-limiting embodiment, each elastic locking element 10 is held in a third housing 500, which forms a receiving cup with which the stretcher-like structure 1 is provided.

  In another variant (not shown) of the clasp 100 of the present invention, the first pushing component 6 and the second pushing component 7 are applied by springs that apply stress in the moving direction to these pushing components. Connected to each other.

  The clasp 100 includes at least one folding arm 5 hinged to the stretcher-like structure 1. The at least one arm 5 includes complementary locking means 5d, which is an elastic force applied by the elastic restoring means 40 in a closed position where the at least one folding arm 5 overlaps the stretcher structure 1. It arrange | positions so that it may cooperate with the locking means 30 with which each of the 1st pushing parts 6 and the 2nd pushing parts 7 in a locked position with the influence of a restoring force is provided. Although the retention quality that can be achieved is low, it is also possible to envisage variants with a single indentation part.

  In the first variant shown, this at least one folding arm 5 in a closed position overlapping the stretcher structure 1 is on the same side as the at least one closure plate 8, 9 with respect to the stretcher structure 1. .

  In the second modification (not shown), the reverse configuration can be adopted. In this case, the folding arm 5 in the closed position overlapping the stretcher structure 1 is on the opposite side of the stretcher structure 1 from the at least one closure plate 8, 9.

  In the preferred embodiment shown, the stretcher structure 1 has two opposing folding arms 5 hinged to the stretcher structure 1, each hinged on a hinge 5 a, and each hinged to the hinge 5 a. Opposing fork-like fitting portions 5c are included. Advantageously, these fork-like fittings 5c of the two folding arms 5 are positioned close to each other when each folding arm 5 is in a closed position overlapping the stretcher structure 1, thereby The clasp can be concealed using the strands 910 of the bracelet 900 each attached to one of the fork-like fitting portions 5c.

  The invention also relates to a bracelet 900 comprising at least one clasp 100 of this type.

  The invention also relates to a watch 1000 comprising this type of bracelet 900 or clasp.

  The drawing shows a particular embodiment of the clasp 100.

  FIG. 1 shows all the components of the clasp 100. The clasp 100 includes: a centered housing structure 1 having three centering housings 1b (the housing 1b receives an elastic locking element 10 as shown in FIGS. 3 and 4, respectively). Forming two housings 500; two pairs of arms 2; two pairs of folding arms 5; two smooth pins 4 forming hinge pins (these are headed after being placed in place) ); A single hook-type push-in part 6 having a housing 40a of two compression springs 40; a double hook-type push-in part 7; two holding plates 8 having ridges 81, 91 shaped like an eagle tail; 9; three elastic locking elements 10;

  The stretched structure 1 having a machined outer shape includes a first housing 200. The first housing 200 forms a chamber in which the first pushing component 6 and the second pushing component 7 are stretched. Slidable on at least one first bearing surface 300 formed at the bottom of the structure 1, while the chamber is one or more lateral surfaces on a pin or on a spring or other element Alternatively, a guide member may be included. The chamber is closed on one side by the bottom of the stretcher structure, the other side is closed by the closing plates 8, 9 and, in the closed and locked position of the clasp, the fork of the folding arm 4 It is closed at the end that supports the fitting portion 5c. Three centering housings 1b configured to receive the elastic locking element 10 are arranged in the first housing 200, which also limits the movement of the folding arm 5. 1a is included. The two pairs of arms 2 extend from the stretcher-like structure 1 whose outer shape is processed, and the two pairs of arms 2 are positioned on the upper portions of the support plates 8 and 9 at positions corresponding to the edges of the first housing 200. Female slant housings 28 and 29 for receiving male slanted hooks 81 and 91 are included.

  The two folding arms 5 are connected to the arm 2 by their hinged portions 5a and two smooth pins 4, which form a pivot pin 2b. The outer portion of each foldable arm 5 supports a fork-like fitting portion 5c configured to support one strand 910 of the bracelet 900.

  The stretcher-like structure 1 with the processed outer shape receives the two pushing parts 6 and 7 by using an elastic restoring means 40 formed by two springs 40 forming a system for pressing the pushing parts against each other. . The locking means 30 for these push-in parts is formed by hooks 306 and 307 arranged at the ends of the extending portions 306a and 307a.

  The push-in parts 6 and 7 are held in the first housing 200 of the stretcher-like structure 1 by the elastic locking element 10, inserted into the centering housing 1b, and closed holes 806, which are arranged in the respective extensions 306a and 307a. 807 is inserted. In this way, the elastic locking element 10 forms a means for limiting the movement of the push-in parts 6, 7.

  When the pushing parts 6, 7, the elastic locking element 10, one or more springs 40 are installed in place, the closing plates 8, 9 are arranged in the central region of the stretcher-like structure 1 and the pushing parts 6, 7 are moved. It slides toward the outside of the stretcher-like structure 1 along the direction T across the direction, and the hooks 81, 91 of the closing plates 8, 9 are inserted into the laterally inclined housings 28, 29 so that the elastic locking element The push button 600 is pressed against the spring element included in the tenth housing until it coincides with each fourth housing 700 (represented by reference numerals 80 and 90). The holding plates 8, 9 are thus fixed in the transverse direction T, which is here perpendicular to the longitudinal direction L in which the folding arms 5 and the strands 901 of the bracelet 900 extend. The elastic locking element 10 is also fixed at a predetermined position. The presence of the push button 600 prevents the holding plates 8, 9 from being inadvertently disassembled during normal operation of the clasp 100, but presses the end of the push button 600 through the housing 80 or 90. By using a tool, it is possible to disassemble during maintenance work.

  The hooking and locking of the folding arm 5 on the stretcher structure 1 is performed by the cooperation of the hooks 306, 307 of the push-in parts 6, 7 and the complementary locking means 5d arranged on the side of the folding arm 5. Achieved by: When the pushing parts 6, 7 are pressed toward the center of the stretcher-like structure 1, the hooks 306, 307 move away from the means 5d, thereby releasing the folding arm 5.

  The pushing part 6 and the pushing part 7 have different shapes. The single hook-type pusher part 6 has a single extension 306a, which has a closing hole 806 for guiding the elastic locking element 10 and provides a mechanical stop for the operating part 206. A hook 306 is formed at the end of the elongated portion 306a. The extension 306a also includes a housing 406a for each compression spring 40 inside the operating portion 206, the operating portion 206 having an outer shape to allow the user to press the portion 206 against the stretcher structure. It protrudes from the stretcher-like structure 1 processed. The operating portion 206 has a smaller cross section 206 a for integration into the first housing 200. The double hook-type push-in part 7 has two extensions 307a, each of which has a closing hole 807 for guiding the corresponding elastic locking element 10, and at the end of these extensions 307a a first The operation part 307 similar to the pushing part 6 is provided. The first holding plate 8 includes a single housing 80 for cooperating with the elastic locking element 10 located on the side of the first single hook-type push-in component 6. The second holding plate 9 includes two housings 90 for cooperating with the elastic locking elements 10 located on the sides of the second double hook-type push-in part 7 respectively.

  The push button 600 of the elastic locking element 10 has a specific chamfer that allows the push button 600 to snap fit within the housing 80, 90. Such chamfering is extremely important for firmly holding and stabilizing the components of the clasp 100. According to an advantageous embodiment of the invention, they are easier and less expensive to manufacture than known clasp components.

  The present invention provides a clasp 100 that is held firmly, operates with minimal play and is not inadvertently unlocked.

  The stretcher structure 1 shown here is rectangular, but this shape can be adapted to the design of jewelry, bracelets or watches and can be oval, circular or any other decorative shape.

DESCRIPTION OF SYMBOLS 1 Stretch-like structure 1a Area | region 1b Housing 2 for centering 2 Arm 2b Pivot pin 4 Smooth pin 5 Folding arm 5a Hinge, hinge part 5c Fork-like fitting part 5d Complementary locking means 6 1st push-in part 7 2nd Pushing parts 8, 9 Closing plate 10 Elastic locking elements 28, 29 Inclined housing 30 Locking means 40 Elastic restoring means, compression spring 40a Housing 80 Fourth housing 81 Diagonal hook 90 90 Fourth housing 91 Diagonal hook 100 Gold 200 First housing 206 Operating portion 206a Cross section 300 First bearing surface 306 Hook 306a Extension 307 Hook 307a Extension 400 Second housing 500 Third housing 600 Push button 700 Fourth housing 800 Closing hole 806 Closure Hole 807 closed Hole 900 bracelet 910 strands 1000 watch T transverse direction L longitudinal direction

Claims (14)

A clasp (100) for jewelry or a watch,
The clasp (100) includes a stretcher structure (1) having a first housing (200),
In the first housing (200), on the first bearing surface (300) against the elastic restoring means (40), the first pushing part (6) and the second pushing part (7) are in relation to each other. Is movable,
Said first pusher part (6) and said second pusher part (7) are said by at least one closing plate (8; 9) capable of taking a closed position in a second housing (400). Retained in the first housing (200);
The clasp (100) includes at least one elastic locking element (10) for the closure plate (8; 9), the elastic locking element (10) includes a push button (600) and the stretcher structure (1) supported in the elastic locking element (10), the compression position allowing movement of the at least one closing plate (8; 9), the push button (600) and the at least one The at least one closing plate (8; 9) is disposed in a relaxed position for fixing the at least one closing plate (8; 9) in the closed position by cooperating with a fourth housing (700) included in the closing plate (8; 9). The clasp (100).   In order to prevent the elastic locking element (10) from coming off and to limit the movement of the pushing part (6; 7), the elastic locking element (10) is provided with the first pushing part (6). The clasp (100) according to claim 1, wherein the clasp (100) is received in a closing hole (800) provided in the second push-in part (7).   The clasp includes a first closing plate (8) cooperating with at least one elastic locking element (10) to hold the first pushing part (6), and the second pushing part ( Clasp (100) according to claim 1, characterized in that it comprises a second closing plate (9) cooperating with at least one said elastic locking element (10) to hold 7). The first closure plate (8) includes a single fourth housing (700) cooperating with a single elastic locking element (10);
4. Clasp according to claim 3, characterized in that the second closure plate (9) comprises two said fourth housings (700) cooperating with one said elastic locking element (10). (100). The first closing plate (8) restricts the movement of the first pushing part (6) toward the center of the stretcher-like structure (1),
The clasp according to claim 1, characterized in that the second closing plate (9) limits the movement of the second pushing part (7) towards the center of the stretcher-like structure (1). (100). The second housing (400) provided in the stretcher-like structure (1) for receiving each closing plate (8; 9) in a closed position is formed by an inclined housing (28; 29);
The inclined housing (28; 29) is arranged to cooperate in a complementary manner with an oblique saddle (81; 91) provided in the closing plate (8; 9). The clasp (100) of paragraph 1.   The clasp (100) according to claim 1, characterized in that the elastic locking element (10) is held in a third housing (500) of the stretcher-like structure (1).   The first push-in component (6) and the second push-in component (7) are connected to each other by a spring that applies stress in the moving direction to the push-in component. The clasp (100) according to 1. The clasp includes at least one folding arm (5) hinged to the stretcher structure (1);
Said at least one arm (5) comprises complementary locking means (5d);
The complementary locking means (5d) is influenced by the elastic restoring force applied by the elastic restoring means (40) in the closed position where the at least one folding arm (5) overlaps the stretcher-like structure (1). 2. The device according to claim 1, wherein the first push-in part (6) and the second push-in part (7) in the locked position are arranged to cooperate with locking means (30) provided in each of the first push-in part (6) and the second push-in part (7). The clasp (100) described.   In the closed position overlapping the stretcher structure (1), the at least one folding arm (5) is the same as the at least one closure plate (8; 9) with respect to the stretcher structure (1). Clasp (100) according to claim 9, characterized in that it is on the side.   In the closed position overlapping the stretcher structure (1), the at least one folding arm (5) is opposite the at least one closure plate (8; 9) with respect to the stretcher structure (1). Clasp (100) according to claim 9, characterized in that it is on the side. The stretcher structure (1) has two opposing folding arms (5) hinged to the stretcher structure (1),
Each of the folding arms (5) is hinged by a hinge (5a), and each includes a fork-like fitting portion (5c) facing the hinge (5a),
The fork-like fittings (5c) of the two folding arms (5) are close to each other when each folding arm (5) is in the closed position where it overlaps the stretcher-like structure (1). The clasp (100) according to claim 9, characterized in that the clasp is positioned as follows.   A bracelet (900) comprising at least one clasp (100) according to claim 1.   A watch (1000) comprising the bracelet (900) of claim 13.

Images