Adjustable wrist strap hook
By designing a folding buckle type buckle hook, using the hinge and stopping limits, the problems of complex structure and difficult operation of the hook in the prior art are solved, and the wear comfort and operation convenience are achieved to adapt to different wrist sizes.
Patent Information
- Application Number
- CN202210802783.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-10-01
- Filing Date
- 2022-07-07
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2042-07-07
AI Technical Summary
The existing watch hooks are complex in structure, large in size, difficult to operate when adjusting the length of the wristband, and lack attractiveness, making them difficult to adapt to the wear comfort of different wrist sizes.
A folding buckle hook is designed, through the hinge connected sheet and movable sheet, the hinge and stop corner limits are used to achieve flexible adjustment and simple handling of the buckle hook, adapting to different wrist sizes. Wear.
It provides good wearing comfort, simple structure and easy to operate, and can naturally adapt to the shape of small and large wrists, avoid the risk of tool operation, and enhance the attractiveness and convenience of the buckle.
Smart Images
Figure CN115919039B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an adjustable clasp for a watch.
[0002] The invention also relates to a wristwatch provided with such a clasp. Background Art
[0003] The problems associated with the need to provide means for adjusting the length of a wrist strap are well known.
[0004] It is known to use a clasp which remains attached to the ends of two wristband sections. Such a clasp occupies two positions: a closed position for wearing the watch, in which the band and the clasp extend around the periphery of the wrist and have a total length allowing the watch to be held; an open or extended position which increases the length of the clasp and therefore the length of the wristband to allow the hand to pass through and remove the watch.
[0005] In solutions with clasps, a first objective is to find the best comfort when wearing the wristband. For this purpose, it is advantageous for the clasp to be able to best adapt to the contours of the wrist (large and small) when the clasp is in the closed configuration. Therefore, the difficulty in the production of clasps is to propose a clasp that adapts in a proper and comfortable way to the wrist of the wearer of the watch, regardless of the size of the wearer's wrist.
[0006] By way of example, patent application EP 09131060 A1 describes a folding buckle type clasp comprising a cover with a series of paired holes intended to receive the ends of a strap for fastening a wristband. Two adjacent pairs of holes are spaced apart at a distance defining an adjustment interval of the useful length of the wristband, in order to solve the above-mentioned problems.
[0007] However, this device for adjusting the length of the wristband is unattractive, given that the adjustment hole is visible on the side of the cover. Furthermore, the adjustment operation of this clasp requires a certain dexterity, as it requires inserting a pointed tool into the hole to compress the wristband fastening band, which risks causing damage to the cover in the event that the person making the adjustment is clumsy.
[0008] To avoid this, alternative devices have been disclosed, such as the one described in patent EP 0350785 B1, a clasp similar to the previous one but including as an alternative means for adjusting the useful length of the wristband, which can be manipulated without tools. In fact, the clasp described in this patent is of the folding buckle type, which comprises two sheets hinged together by a rod passing through both of them, each of which carries at its free end a member for fastening to the wristband. The first sheet carries a hook intended to engage in a hole provided in the second sheet to cooperate with a trigger, thereby allowing the locking of the hook and thus the clasp in the closed state. The second sheet comprises two parts that can slide relative to each other within a certain predetermined range, thereby defining a spacing for adjusting the useful length of the wristband. The first of the two parts of the second sheet carries a hinge connecting it to the first sheet, while the second part carries a locking trigger. The hole in which the hook engages to lock the clasp has a length corresponding to the sliding range between the two parts of the second sheet in the longitudinal direction of the wristband. The trigger has a central portion defining two positions for the hook along the longitudinal direction of the wristband and corresponding to two different useful lengths of the wristband. A control member, in particular comprising a pusher, allows actuating the trigger to release the hook and open the clasp.
[0009] However, such a solution has the disadvantage of making the structure more complex, increasing its size and making the clasp difficult to manipulate. Summary of the invention
[0010] The main purpose of the present invention is to overcome the drawbacks of the clasps known in the prior art by proposing a wristband clasp which allows providing good wearing comfort regardless of the size of the wrist. The present invention also aims to provide a wristband that is structurally simple and easy to handle.
[0011] To this end, the present invention more specifically relates to a wristband clasp, which is a folding buckle type and includes a first sheet and a second sheet, which are hinged relative to each other by the first of their respective ends between a closed position, referred to as a wearing position, and at least one open position, the first sheet carrying a fastener for fastening a first wristband section at its second end, and a locking mechanism for keeping the first sheet and the second sheet in their closed position at its second end, and the second sheet carrying a fastener for fastening the second wristband section at its second end.
[0012] According to the present invention, the first sheet member and the second sheet member are hinged together through the first end of their respective ends by means of a pair of movable sheet members, and the hinged movable sheet member is connected to the first sheet member and the second sheet member via a first hinge and a second hinge, and the first hinge and the second hinge are angularly delimited by stop portions respectively formed on the first end of the first sheet member, the first end of the second sheet member and the second end of the movable sheet member to define two predetermined wearing positions.
[0013] According to other advantageous variants of the invention:
[0014] - the amplitude of the angular displacement of the hinge is between 5° and 35°;
[0015] - the movable sheets have the same length;
[0016] - the first ends of the first and second flaps and the second end of the movable flap have notches, said ends being arranged to cooperate by interlocking at the notches;
[0017] - the free ends of the recesses of the first and second sheet-like elements have a semicircular shape, the bottom of the recess having a flat surface;
[0018] - the free end of the recess of the movable sheet has a chamfered rectilinear shape, and the bottom of the recess has a semicircular surface;
[0019] - the notches of the first and second sheet-like elements are on the inside and the notch of the movable sheet-like element is on the outside;
[0020] The sheet is made of metal, metal alloy, composite material or ceramic.
[0021] The invention also relates to a wristwatch comprising a wristband provided with a clasp according to the invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Other characteristics and advantages of the invention will become more apparent on reading the following detailed description of a preferred embodiment given by way of non-limiting example with reference to the accompanying drawings, in which:
[0023] - Figure 1 shows a general perspective view of a wristband clasp according to the present invention, shown in an open position;
[0024] - Figure 2 Shows Figure 1 A partially exploded perspective view of a buckle hook;
[0025] - Figure 3 A detailed perspective view of the device for adjusting the curvature of the wristband is shown. DETAILED DESCRIPTION
[0026] The clasp shown in the accompanying drawings but not limited thereto corresponds to a preferred embodiment of the present invention. More specifically, the clasp is of the folding buckle type and is intended to close a watch wristband.
[0027] As shown, the clasp 100 includes a first sheet 1 hinged on a second sheet 2. Each of the first sheet 1 and the second sheet 2 has an elongated shape in the longitudinal direction of the wristband and is slightly curved to better match the shape of the wearer's wrist.
[0028] The first sheet 1 comprises two uprights 10 arranged to contact each other at one of their ends, each upright 10 having a notch 11 so that they do not contact each other over most of their length.
[0029] Each of the uprights 10 carries an extension 12 which, close to the other end, extends in a direction perpendicular to the longitudinal direction of the wristband to form a pusher defining a control allowing the clasp to be unlocked, such as Figure 1 shown.
[0030] The first sheet 1 also comprises a cover 13 having an upper wall 14 bearing a side wall 15 and having a lower wall 16. The side wall 15 is provided with two holes 17 allowing one end of the strap to be fastened to the first wristband section in a conventional manner. The side wall 15 also comprises two openings allowing the extension 12 to be extended, thus allowing the clasp 100 to be unlocked.
[0031] The second sheet 2 comprises two arms 20 connected in their central region by a transverse stud 21. The arms 20 are extended by a bend 22 defining a loop 5 for the second wristband segment. The loop 5 has a first pin 7 and a second pin 8, both intended to engage in different holes of the wristband to define a first and a second anchoring point of the wristband segment to the clasp, thereby keeping it well aligned relative to the clasp.
[0032] Furthermore, the free end of second sheet 2 can carry means for adjusting the useful length of the wrist strap intended to be associated with clasp 100 .
[0033] If you can Figure 1 As seen in the figure, the first sheet member 1 and the second sheet member 2 are hinged together through their respective first ends by means of a pair of movable sheet members 3 and 4, and the movable sheet members 3 and 4 are connected to the first sheet member 1 and the second sheet member 2 via the first hinge A1 and the second hinge A2.
[0034] Advantageously, the first hinge A1 and the second hinge A2 are angularly bounded by stops formed on the first ends of the first sheet member 1 and the second sheet member 2 and the second ends of the movable sheet members 3 and 4, respectively, so as to define two predetermined wearing positions, namely, a wearing position for a small wrist and a wearing position for a large wrist.
[0035] Each of the first hinge A1 and the second hinge A2 is angularly delimited by a stop 10a, 10b, 21a, 21b of the first sheet 1 and the second sheet 2, which cooperates with a corresponding stop 30a, 30b, 40a, 40b of the movable sheet 3, 4. These stops define a first and a second position of the movable sheet 3, 4 and implicitly define the position of the clasp, wherein both sheets occupy the same position.
[0036] Thus, when the clasp is closed, the movable sheet elements 3, 4 can occupy a first position suitable for small wrists and a second position suitable for large wrists. When the watch is worn, it can naturally switch from one position to another thanks to the stop.
[0037] In order to provide a clasp suitable for many wrist shapes, the angular displacement amplitude of the first hinge A1 and the second hinge A2 is, for example, between 5° and 35°. Such an angular displacement amplitude allows the wearer's comfort to be optimized according to the size of the wearer's wrist, and too little or too much displacement will be detrimental to comfort.
[0038] from Figure 2 and Figure 3 As can be seen in the figure, the first end of the first sheet 1 and the second sheet 2 and the second end of the movable sheet 3, 4 each have a notch 23 ', 23, 31, 41, so as to cooperate by interlocking at these notches. The notches 23 ', 23 of the first sheet 1 and the second sheet 2 are inside, while the notches 31, 41 of the movable sheet 3, 4 are outside.
[0039] The free ends of the notches 23', 23 of the first sheet member 1 and the second sheet member 2 have a semicircular shape, and the bottoms of the notches 23', 23 have a flat surface. The free ends of the notches 31, 41 of the movable sheet members 3, 4 form stoppers 30a, 30b, 40a, 40b and have a chamfered straight line shape, and the bottoms of the notches have a semicircular surface.
[0040] Thus, the cooperation between the bottom of the notches 23 ′, 23 and the free ends of the notches 31 , 41 forms a stop, and the chamfer defines the amplitude of the angular displacement of the first hinge A1 and the second hinge A2.
[0041] As can be seen from this description, the clasp according to the invention comprises a second pair of flaps 3, 4 that can be moved to adjust the curvature of the clasp and the wristband. The construction and manipulation of this clasp is simple and allows the user to easily adjust the clasp when necessary.
[0042] The above description describes specific embodiments by way of non-limiting illustration, and the invention is not limited to the implementation of certain specific features just described, such as the shapes specifically shown and described for the flaps or their mode of cooperation for ensuring the locking of the clasp.
[0043] A person skilled in the art will not encounter any particular difficulties in adapting the content of this disclosure to their own needs and implementing a clasp, in particular for a timepiece, without departing from the scope of the invention. It should be noted that, for example, the application of this teaching to the construction of a folding buckle having a structure different from that illustrated and described will not pose any particular difficulties to a person skilled in the art.
Claims
1. A wristband clasp (100), the wristband clasp (100) being of the folding buckle type and comprising a first sheet (1) and a second sheet (2), the first sheet (1) and the second sheet (2) being hinged relative to each other by a first of their respective ends between a closed position, referred to as a wearing position, and at least one open position, the first sheet carrying at its second end a fastener for fastening a first wristband section and at its second end a locking mechanism for keeping the first sheet (1) and the second sheet (2) in their closed position, the second sheet (2) carrying at its second end a fastener for fastening a second wristband section, It is characterized in that The first sheet member (1) and the second sheet member (2) are hinged together through the first end of each of their ends by means of a pair of movable sheet members, and the hinged pair of movable sheet members are connected to the first sheet member (1) and the second sheet member (2) via a first hinge (A1) and a second hinge (A2), and the first hinge (A1) and the second hinge (A2) are angularly bounded by stoppers respectively formed on the first end of the first sheet member (1), the first end of the second sheet member (2) and the second end of the pair of movable sheet members, so as to define two predetermined wearing positions according to the size of the wrist.
2. The wristband buckle (100) according to claim 1, characterized in that: The amplitude of the angular displacement of the first hinge (A1) and the second hinge (A2) is between 5° and 35°.
3. The wristband buckle (100) according to claim 2, characterized in that: The pair of movable sheet members have the same length.
4. The wristband buckle (100) according to claim 3, characterized in that: The first end of the first sheet member (1), the first end of the second sheet member (2), and the second end of the pair of movable sheet members have notches and are arranged to cooperate by interlocking at the notches.
5. The wristband buckle (100) according to claim 4, characterized in that: The free ends of the recesses of the first sheet member (1) and the second sheet member (2) have a semicircular shape, and the bottoms of the recesses of the first sheet member (1) and the second sheet member (2) have a flat surface.
6. The wristband buckle (100) according to claim 4, characterized in that: Free ends of the recesses of the pair of movable sheet members have a chamfered linear shape, and bottoms of the recesses of the pair of movable sheet members have a semicircular surface.
7. The wristband buckle (100) according to any one of claims 4 to 6, characterized in that: The notches of the first sheet member (1) and the second sheet member (2) are inside, and the notches of the pair of movable sheet members are outside, or conversely, the notches of the first sheet member (1) and the second sheet member (2) are outside, and the notches of the pair of movable sheet members are inside.
8. The wristband buckle (100) according to any one of claims 1 to 6, characterized in that: The first sheet-like member (1), the second sheet-like member (2) and the pair of movable sheet-like members are made of metal, metal alloy, composite material or ceramic.
9. A wristwatch comprising a wristband, characterized in that: The wristband is provided with a wristband hook (100) according to any one of claims 1 to 8.