An ultra-thin double-sided pressing folding watch buckle, watchband and watch

Abstract

An ultra-thin double-sided push-button folding clasp, watch strap, and watch includes a clasp cover, a clasp holder, a push-button assembly, a center fork plate, and a side fork plate. The lower surface of the clasp cover has a mounting groove, and both sides of the clasp cover have push-button insertion holes communicating with the mounting groove. The clasp holder is fixed in the mounting groove and its two ends are hinged to one end of the watch strap and the center fork plate. The lower surface of the clasp holder has a receiving groove and a guide groove, and the upper surface of the clasp holder has two push-button sliding grooves on both sides. The push-button assembly includes a push-button that slides through the push-button insertion hole and elastically engages with the inner wall of the push-button sliding groove. The push-button extends out of the push-button insertion hole and is limited to the inner edge of the push-button insertion hole. The side fork plate is received in the receiving groove and hinged to the end of the watch strap, including a first end and a second end. The side fork plate has a locking groove. The center fork plate is hinged to the second end and can be rotatably embedded in the locking groove. The side fork plate has two corresponding guide grooves on both sides and two ball slots for receiving balls. The balls retract into the ball slots under the pressure of the push-button or the clasp holder and extend out of the ball slots when the center fork plate is embedded in the locking groove.

Description

Technical Field

[0001] This utility model relates to the field of watch technology, and in particular to an ultra-thin double-sided push-button folding clasp, watch strap and watch. Background Technology

[0002] A watch clasp is used to connect to a watch band and adjusts the overall length of the band by changing its shape, allowing the watch or smart wearable device (such as a fitness tracker) to be worn on or removed from the wrist. Currently, metal watch bands for watches or smart wearable devices typically use a turtle-back clasp as the connection point. A turtle-back clasp usually includes a turtle back, a push-button housing, and a fork plate. Some turtle-back clasps also include a safety mechanism to improve the reliability of the band connection. The turtle-back clasp has advantages such as simple structure, reliable function, and ease of use, making it the preferred clasp for various mid-to-high-end products. However, the traditional turtle-back clasp's locking structure uses a locking pin on the push-button housing and fork plate to achieve the upper and lower locking, which occupies a significant amount of space in the thickness direction. When the bottom fork plate is added, the entire clasp is much thicker than the watch band. This design causes the clasp to protrude from the watch band, with the side of the clasp closest to the wrist protruding from the bottom of the band and pressing against the wrist, resulting in discomfort and affecting the user experience. The side of the clasp facing away from the wrist is higher than the band surface, making the clasp more susceptible to bumps and wear during daily use, increasing the likelihood of damage and shortening its lifespan. Utility Model Content

[0003] Therefore, it is necessary to provide an ultra-thin double-sided push-button folding clasp, watch strap, and watch to address the above-mentioned shortcomings, in order to solve the problems of insufficient wearing experience and easy damage caused by excessive clasp thickness.

[0004] An ultra-thin double-sided push-button folding clasp includes:

[0005] The cover has a mounting groove on its lower surface and a pressing hole that communicates with the mounting groove on each of its two opposite outer side walls.

[0006] The buckle is housed in the mounting groove and fixedly connected to the buckle cover. One end of the buckle is hinged to the end of the watch strap. The lower surface of the buckle has a receiving groove. The upper surface of the buckle has two corresponding pressing holes on both sides and two pressing grooves that connect to the receiving groove. The lower surface of the buckle has two guide grooves that correspond to the pressing grooves and connect to the receiving groove. The top surface of the guide groove is an inclined guide surface that gradually increases in height from the edge of the buckle to the center of the buckle.

[0007] The pressing assembly includes two buttons that slide through two pressing holes and elastically engage with the inner wall of the pressing groove along the width direction of the buckle. The buttons extend out of the pressing holes and are limited by the inner edge of the pressing holes.

[0008] A center fork plate, one end of which is hinged to the other end of the buckle;

[0009] The side fork plate, housed in a receiving groove, includes a first end that is hinged to the other end of the watch strap and a second end away from the first end. A slot is formed on the upper surface of the side fork plate that penetrates the end face of the second end. The other end of the middle fork plate is hinged to the second end of the side fork plate and can be rotatably embedded in the slot. Two corresponding guide grooves and two ball grooves for receiving balls are formed on the two opposite outer walls of the side fork plate. The balls retract into the ball grooves under the pressing of the button or the buckle, and extend out of the ball grooves when the middle fork plate is embedded in the slot to limit and abut against the bottom surface of the pressing slide.

[0010] In one embodiment, the ultra-thin double-sided push-button folding clasp further includes a first spring bolt and a second spring bolt. The two ends of the clasp frame are respectively provided with a first mounting notch and a second mounting notch. One end of the watch strap is embedded in the first mounting notch. The first spring bolt passes through the first mounting notch and is sequentially connected to the end of the strap, the clasp frame, and the clasp cover. One end of the center fork plate is embedded in the second mounting notch. The second spring bolt passes through the second mounting notch and is sequentially connected to the end of the center fork plate, the clasp frame, and the clasp cover.

[0011] In one embodiment, the middle fork plate has a T-shaped structure, including a horizontal part extending along the length direction of the buckle, and a vertical part fixed at the end of the horizontal part and perpendicular to the horizontal part. The vertical part is embedded in a second mounting notch and is hinged to the buckle. One end of the horizontal part away from the vertical part is hinged to the side fork plate, and the upper surface of the first end of the side fork plate has an arc-shaped recess that conforms to the outer surface contour of the vertical part.

[0012] In one embodiment, the pressing slide includes a limiting platform located above the guide groove and two spring grooves disposed on both sides of the limiting platform along the length direction of the buckle; the pressing includes a pressing part extending out of the pressing insertion hole and a limiting part facing away from the pressing part. The limiting part includes a pushing area corresponding to the limiting platform and two limiting grooves disposed on both sides of the pushing area along the length direction of the buckle and corresponding to the two spring grooves. The limiting grooves and the spring grooves together form a spring mounting area. A spring is provided in the spring mounting area, and the two ends of the spring abut against the inner wall of the spring groove and the inner wall of the limiting groove, respectively.

[0013] In one embodiment, a first protrusion is provided on the upper surface of the press and near the limiting portion, and a second protrusion is provided on the lower surface of the press and near the limiting portion. The first protrusion and the second protrusion abut against the inner edge of the press insertion hole, respectively.

[0014] In one embodiment, the upper surface of the side fork plate protrudes in the middle to form an arc-shaped protrusion, and the ball groove is formed in the arc-shaped protrusion.

[0015] In one embodiment, the marble includes a mounting cylinder fixed in a marble groove and having an opening at one end, an annular elastic member housed in the mounting cylinder, and a projectile inserted into the annular elastic member and extending out of the groove of the marble groove. A limiting ring is provided at the opening of the mounting cylinder, and a protruding ring is provided on the middle annular side of the projectile. One side of the protruding ring abuts against the annular elastic member, and the other side of the protruding ring abuts against the inner edge of the limiting ring. When the projectile is compressed, it retracts into the marble groove and compresses the annular elastic member to cause deformation.

[0016] In one embodiment, the cover, the bracket, the middle fork plate, and the side fork plate have the same curvature along the length of the cover, and the thickness of the middle fork plate is less than or equal to the thickness of the side fork plate; when the side fork plate is received in the receiving groove, the lower surface of the side fork plate is flush with the lower surface of the cover, or the lower surface of the side fork plate is higher than the lower surface of the cover.

[0017] This utility model also discloses a watch strap, which includes the aforementioned ultra-thin double-sided push-button folding clasp.

[0018] This utility model also discloses a watch that includes the aforementioned ultra-thin double-sided push-button folding clasp.

[0019] The ultra-thin double-sided push-button folding clasp, watch strap, and watch of this invention feature a clasp with the fastening and opening structure designed in the lateral direction. A locking structure is formed by the interaction of a pin mounted on the side of the fork plate and the clasp holder, and unlocking is achieved by pressing the pin. This design requires less space in the clasp's thickness direction, significantly reducing the clasp's thickness and allowing it to better match the watch strap thickness. With no protrusions from the watch strap on either the inner or outer sides, the inner side of the clasp fits the wrist more snugly, improving the comfort of wearing the watch or smart wearable device. The outer side of the clasp is less prone to bumps and wear, extending its lifespan and enhancing the product's market competitiveness. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the ultra-thin double-sided push-button folding watch buckle in the fastened state in one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the ultra-thin double-sided push-button folding watch buckle in a semi-open state in one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the ultra-thin double-sided push-button folding watch clasp in its fully opened state, according to one embodiment of the present invention.

[0023] Figure 4 This is an exploded view of the ultra-thin double-sided push-button folding watch clasp in one embodiment of the present invention;

[0024] Figure 5This is a cross-sectional structural diagram of the ultra-thin double-sided push-button folding watch buckle in the fastened state in one embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the cover structure in one embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the buckle from one perspective in one embodiment of the present invention;

[0027] Figure 8 This is a structural schematic diagram of the buckle from another perspective in one embodiment of the present invention;

[0028] Figure 9 This is a structural schematic diagram from one perspective in one embodiment of the present invention;

[0029] Figure 10 This is a structural schematic diagram of one embodiment of the present invention, viewed from another perspective;

[0030] Figure 11 This is a schematic diagram of the structure of the fork plate in one embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the side fork plate from one perspective in one embodiment of the present invention;

[0032] Figure 13 This is a structural schematic diagram of the side fork plate from another perspective in one embodiment of the present invention;

[0033] Figure 14 This is a schematic diagram of the structure of the first spring bolt in one embodiment of the present invention. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0035] Please combine Figure 1-14This utility model discloses an ultra-thin double-sided push-button folding watch clasp. The clasp includes a cover 100, a clasp holder 200, a push-button assembly, a central fork plate 300, and side fork plates 400. The lower surface of the cover 100 has a mounting groove 110, and each of the two opposite outer walls of the cover 100 has a push-button insertion hole 120 communicating with the mounting groove 110. The clasp holder 200 is housed within the mounting groove 110 and fixedly connected to the cover 100. One end of the clasp holder 200 is connected to the watch strap. The buckle frame 200 is hinged at both ends. A receiving groove 210 is provided on the lower surface of the buckle frame 200. Two pressing grooves 220, each corresponding to a pressing insertion hole 120 and connected to the receiving groove 210, are provided on both sides of the upper surface of the buckle frame 200. Two guide grooves 230, each corresponding to a pressing groove 220 and connected to the receiving groove 210, are provided on the lower surface of the buckle frame 200. The top surface of the guide groove 230 is an inclined guide surface whose height gradually increases from the edge of the buckle frame 200 towards the center. The pressing assembly includes two pressing buttons 500 that slide through the two pressing insertion holes 120 and elastically engage with the inner wall of the pressing groove 220 along the width direction of the buckle frame 200. The pressing buttons 500 extend out of the pressing insertion holes 120 and are limited by the inner edge of the pressing insertion holes 120. One end of the middle fork plate 300 is hinged to the other end of the buckle frame 200. The side fork plate 400 is housed in the receiving groove 210. The side fork plate 400 includes a first end that is hinged to the other end of the watch strap and a second end away from the first end. The upper surface of the side fork plate 400 is provided with a slot 410 that penetrates the end face of the second end. The other end of the middle fork plate 300 is hinged to the second end of the side fork plate 400 and can be rotatably embedded in the slot 410. The two opposite outer side walls of the side fork plate 400 are provided with two corresponding guide grooves 230 and two ball grooves 430 that house the ball 420. The ball 420 retracts into the ball groove 430 under the pressing of the pressing 500 or the buckle 200, and extends out of the ball groove 430 when the middle fork plate 300 is embedded in the slot 410 to limit and abut against the bottom surface of the pressing slide 220.

[0036] When the clasp is engaged, the clasp bracket 200 is located within the mounting groove 110, the side fork plate 400 is located within the receiving groove 210, and the center fork plate 300 is embedded in the slot 410 of the side fork plate 400. The end piece of the watch strap, the clasp bracket 200, the center fork plate 300, the side fork plate 400, and the end piece of the other end of the watch strap are hinged together in sequence. At this time, the push button 500 is in a natural state and does not compress the ball bearing 420. The end of the ball bearing 420 extends out of the ball bearing groove 430 and is located between the clasp cover 100 and the bottom surface of the push button slide 220. The ball bearing 420 is limited by the contact between the ball bearing 420 and the bottom surface of the push button slide 220, so as to prevent the side fork plate 400 from driving the center fork plate 300 to unfold relative to the clasp bracket 200, thus ensuring the stability of the structure after the clasp is engaged.

[0037] When the clasp needs to be opened, press the buttons 500 simultaneously from both sides of the clasp cover 100. This causes the buttons 500 to move towards the center of the clasp cover 100, squeezing the ball bearing 420. Under the pressure of the buttons 500, the ball bearing 420 retracts into the ball bearing groove 430, and the end of the ball bearing 420 completely disengages from the bottom surface of the button slide 220. This releases the restriction of the bottom surface of the button slide 220 on the ball bearing 420, that is, releases the restriction of the clasp bracket 200 on the side fork plate 400. At this point, pulling up the clasp cover 100 allows the side fork plate 400 and the center fork plate 300 to unfold. Since one end of the center fork plate 300 is connected to the clasp bracket 200 and the other end is connected to the side fork plate 400, and both can rotate freely, opening the center fork plate 300 and the side fork plate 400 together extends the length of the watch strap, allowing the wearer to easily remove the watch from their wrist.

[0038] When the clasp needs to be tightened again, the side fork plate 400 and the middle fork plate 300 are folded together and stored in the receiving groove 210 of the clasp holder 200. During the process of the side fork plate 400 driving the middle fork plate 300 to fold into the receiving groove 210, the end of the ball bearing 420 on the side of the side fork plate 400 slides and abuts against the top surface of the guide groove 230 at the bottom of the clasp holder 200. As the side fork plate 400 and the clasp holder 200 approach each other, the inclined guide surface squeezes the end of the ball bearing 420 and pushes the ball bearing 420 into the ball bearing groove 430 until the end of the ball bearing 420 completely leaves the inclined guide surface. At this time, the end of the ball bearing 420 abuts against the edge of the groove on the side of the guide groove 230 adjacent to the middle of the clasp holder 200, and the constraint force of the clasp holder 200 on the ball bearing 420 along the thickness direction of the clasp holder 200 is released. As the side fork plate 400 and the buckle 200 approach each other, the end of the ball 420 moves upward and leaves the edge of the groove on the side of the guide groove 230 near the middle of the buckle 200. The constraint force of the buckle 200 on the ball 420 along the width direction of the buckle 200 is also released. The ball 420 then returns to its original position and extends out of the ball groove 430. The end of the extended ball 420 abuts against the bottom surface of the pressing slide groove 220. The constraint of the bottom surface of the pressing slide groove 220 on the ball 420 is achieved, thus limiting the buckle 200 and the side fork plate 400. At this time, neither the side fork plate 400 nor the middle fork plate 300 can rotate, thus being fixed in the receiving groove 210 of the buckle 200.

[0039] The cover 100 is used for sliding installation of the snap fastener 500 and to shield the buckle 200, the center fork plate 300, and the side fork plate 400, thereby reducing the impact of the buckle's fastening structure on the watch strap's appearance and protecting components such as the buckle 200, the center fork plate 300, and the side fork plate 400. In this embodiment, the cover 100 has an arc-shaped structure along its length to adapt to the shape of the consumer's wrist. The cross-section of the cover 100 has an n-shaped structure, including two opposing side walls and an arc-shaped plate fixed to the top of the two side walls to form the cover top. The arc-shaped plate and the two side walls together form a mounting groove 110. Furthermore, in this embodiment, the buckle 200, the middle fork plate 300, and the side fork plate 400 are all arc-shaped structures extending along the length of the buckle cover 100, and the buckle cover 100, buckle 200, middle fork plate 300, and side fork plate 400 have the same curvature along the length of the buckle cover 100, so that after the buckle is folded and fastened, the upper surface of the buckle 200 can fit against the lower surface of the arc-shaped plate, and the upper surface of the side fork plate 400 can fit against the top surface of the receiving groove 210, so as to minimize the size of the buckle along its thickness direction, so that the buckle can fit the consumer's wrist when worn. The thickness of the center fork plate 300 is less than or equal to the thickness of the side fork plate 400, so that the center fork plate 300 can be completely housed within the slot 410. This avoids the side fork plate 400 from being difficult to fit against the top surface of the receiving slot 210 due to excessive thickness of the center fork plate 300 or protruding from the surface of the side fork plate 400, which would affect the thickness of the buckle, or the consumer experiencing discomfort due to the center fork plate 300 protruding from the lower surface of the side fork plate 400. In addition, in this embodiment, when the side fork plate 400 is housed in the receiving slot 210, the lower surface of the side fork plate 400 is flush with the lower surface of the buckle cover 100, or the height of the lower surface of the side fork plate 400 is higher than the height of the lower surface of the buckle cover 100. This can also be understood as ensuring that, at least when the watch buckle is fastened, the lower surface of the side fork plate 400 does not protrude from the bottom of the side wall of the buckle cover 100, so as to control the thickness of the watch buckle while avoiding the impact on the appearance of the watch buckle when the side fork plate 400 protrudes from the buckle cover 100.

[0040] In one embodiment, the ultra-thin double-sided push-button folding clasp further includes a first spring bolt 600 and a second spring bolt 700. The two ends of the clasp frame 200 are respectively provided with a first mounting notch 240 and a second mounting notch 250. One end of the watch strap is embedded in the first mounting notch 240. The first spring bolt 600 passes through the first mounting notch 240 and is sequentially connected to the end of ... Furthermore, in this embodiment, each side wall of the cover 100 is provided with a connecting hole 130 at both ends. The connecting hole 130 is used to pass through the first spring bolt 600 or the second spring bolt 700. In this way, the first spring bolt 600 passes through the tail piece, the two inner side walls of the buckle 200 at the first mounting notch 240 and the corresponding connecting hole 130, and the second spring bolt 700 passes through the middle fork plate 300, the two inner side walls of the buckle 200 at the second mounting notch 250 and the corresponding connecting hole 130. At the same time, the cover 100 and the buckle 200 are fixedly connected by the first spring bolt 600 and the second spring bolt 700, and the buckle 200 is also hinged to the watch strap tail piece and the middle fork plate 300 by the first spring bolt 600 and the second spring bolt 700.

[0041] In this embodiment, the structure of the first spring bolt 600 is the same as that of the second spring bolt 700. The specific structure is described below using the first spring bolt 600 as an example. Please refer to further... Figure 14 The first spring bolt 600 includes a tube 610 and retractable spring pins 620 disposed at both ends of the tube 610. The ends of the spring pins 620 are spherical or arc-shaped. During watch buckle assembly, the watch strap end piece is first inserted into the first mounting notch 240 of the buckle holder 200. Then, the tube 610 of the first spring bolt 600 is passed through the two opposing inner walls of the watch strap end piece and the first mounting notch 240 to achieve a hinged connection between the watch strap end piece and the buckle holder 200. Following the same method, connect the buckle 200 and the middle fork plate 300, then place the buckle cover 100 on the buckle 200 and press down the buckle cover 100. During this process, the side wall of the buckle cover 100 squeezes the spring pin 620, causing the spring pin 620 to be compressed and retract into the tube 610. When the buckle cover 100 is pressed down until the spring pin 620 moves to the connecting hole 130, the constraint of the side wall of the buckle cover 100 on the spring pin 620 is released, and the spring pin 620 rebounds and inserts into the connecting hole 130 of the buckle cover 100 to achieve the limiting connection between the buckle cover 100 and the buckle 200.

[0042] The buckle 200 has an overall H-shaped structure. An independent pressing groove 220 can be provided on each of two opposite sides of the buckle 200. This pressing groove 220 can communicate with the receiving groove 210 to provide a channel for the ball 420 to slide into the pressing groove 220 through the receiving groove 210. Alternatively, the two pressing grooves 220 can be connected, i.e., a through-slot is formed on the upper surface of the buckle 200, penetrating the two opposite sidewalls of the buckle 200, to simultaneously press the ball 500 and the ball 420, reducing the processing difficulty of the buckle 200. In this embodiment, the two pressing grooves 220 are connected through a through-hole 260 penetrating the upper surface of the buckle 200, which also communicates with the receiving groove 210.

[0043] The pressing slide 220 includes a limiting platform 221 located above the guide groove 230 and two spring grooves 222 arranged on both sides of the limiting platform 221 along the length direction of the buckle 200; the pressing 500 includes a pressing part 510 extending out of the pressing insertion hole 120 and a limiting part facing away from the pressing part 510. The limiting part includes a pushing area 520 corresponding to the limiting platform 221 and two limiting grooves 530 opened on both sides of the pushing area 520 along the length direction of the buckle 200 and corresponding to the two spring grooves 222. The limiting grooves 530 and the spring grooves 222 together form a spring mounting area. A spring 223 is provided in the spring mounting area. The two ends of the spring 223 are respectively limited and abutted against the inner wall of the spring groove 222 and the inner wall of the limiting groove 530. Preferably, the dimension of the pressing groove 220 along the length of the buckle 200 is larger than the dimension of the through hole along the length of the buckle 200, so that when the spring 223 is received in the spring groove 222, it can abut against the inner wall of the spring groove 222 to limit the spring 223. In this embodiment, the height of the bottom surface of the spring groove 222 is lower than the height of the limiting platform 221, so as to limit the spring 223 placed in the spring groove 222, prevent the spring 223 from shifting laterally along the length of the buckle 200 in the spring groove 222, and avoid the spring 223 interfering with the sliding of the pressing 500. In this embodiment, by setting the spring 223, the spring 223 provides the restoring force after the pressing pressure on the pressing 500 is released, so that the pressing 500 can move away from the center of the buckle cover 100 under the action of the spring 223, so as to provide conditions for the next pressing of the pressing 500. Furthermore, a first protrusion 540 is provided on the upper surface of the push button 500 and near the limiting portion, and a second protrusion 550 is provided on the lower surface of the push button 500 and near the limiting portion. The first protrusion 540 and the second protrusion 550 respectively abut against the inner edge of the push button insertion hole 120. By providing the first protrusion 540 and the second protrusion 550 on the upper and lower surfaces of the push button 500, and by having the first protrusion 540 and the second protrusion 550 abut against the inner edge of the push button insertion hole 120, the maximum distance that the push button 500 slides outward along the width direction of the cover 100 can be limited, so as to prevent the push button 500 from completely disengaging from the push button insertion hole 120 and ensuring the reliability and stability of the watch clasp structure.

[0044] The middle fork plate 300 has a T-shaped structure and includes a horizontal portion 310 extending along the length of the buckle 200 and a vertical portion 320 fixed to the end of the horizontal portion 310 and perpendicular to it. The vertical portion 320 is embedded in the second mounting notch 250 and hinged to the buckle 200. One end of the horizontal portion 310 away from the vertical portion 320 is hinged to the side fork plate 400. In this embodiment, both the vertical portion 320 and the horizontal portion 310 have insertion holes extending along the width of the buckle cover 100 to insert corresponding connecting pins, thereby achieving hinged connections between the middle fork plate 300 and the side fork plate 400 and the buckle 200, respectively. The upper surface of the first end of the side fork plate 400 is provided with an arc-shaped recess 440 that conforms to the contour of the outer surface of the vertical part 320. By providing an arc-shaped recess 440 on the side fork plate 400, a receiving space for the vertical part 320 of the middle fork plate 300 is provided so that the middle fork plate 300 can be fully embedded in the slot 410, thereby reducing the impact on the thickness of the watch buckle.

[0045] To improve the structural strength of the side fork plate 400, in one embodiment, the upper surface of the side fork plate 400 protrudes in the middle to form an arc-shaped protrusion 450, and a ball groove 430 is formed in the arc-shaped protrusion 450. Alternatively, the thickness of the side fork plate 400 at the portion where the ball groove 430 is formed is greater than the thickness of the area surrounding the portion where the ball groove 430 is formed, to avoid a decrease in the strength of the side fork plate 400 or breakage caused by openings in the side fork plate 400, thereby extending the service life of the side fork plate 400 and even the watch buckle. The ball groove 430 is directly opposite the center of the end face of the pressing 500, so that the ball 420 is subjected to uniform force when the pressing 500 is pressed.

[0046] In this embodiment, the marble 420 includes a mounting cylinder 421 fixed in the marble groove 430 and having an opening at one end, an annular elastic member 422 housed in the mounting cylinder 421, and a projectile 423 inserted into the annular elastic member 422 and extending out of the groove of the marble groove 430. A limiting ring 424 is provided at the opening of the mounting cylinder 421, and a protruding ring 425 is provided on the middle annular side of the projectile 423. One side of the protruding ring 425 abuts against the annular elastic member 422, and the other side of the protruding ring 425 abuts against the inner edge of the limiting ring 424. When compressed, the projectile 423 retracts into the marble groove 430 and compresses the annular elastic member 422, causing deformation. Preferably, the annular elastic member 422 is a compression spring, and both ends of the annular elastic member 422 abut against the inner end face of the mounting cylinder 421 and the protruding ring 425, respectively. In this embodiment, the annular elastic element 422 is used to provide restoring force for the return of the bullet 423 when the pressure acting on the bullet 423 is released, so that the bullet 423 extends out of the ball groove 430 and abuts against the upper surface of the limiting platform 221, so as to achieve the purpose of locking the side fork plate 400 and the buckle 200.

[0047] During the buckle assembly, the fork plates are first connected. The middle fork plate 300 is placed in the slot 410 of the side fork plate 400. The horizontal part 310 of the middle fork plate 300 is connected to the open end of the slot 410 of the side fork plate 400 via a male-female connector or a connecting pin, allowing both to rotate freely. When the vertical part 320 of the middle fork plate 300 rotates into the arc-shaped recess 440 of the side fork plate 400, the sides of the middle fork plate 300 and the side fork plate 400 overlap and fold together. At this time, the vertical part 320 of the middle fork plate 300 is rotated 180° away from the first end of the side fork plate 400, and the middle fork plate 300 and the side fork plate 400 are fully unfolded, reaching the maximum connection length of the buckle. The vertical part 320 of the center fork plate 300 is placed in the second mounting notch 250 of the buckle 200. The center fork plate 300 and the buckle 200 are connected in series by the second spring 223 bolt 700, so that the spring 223 pin 620 of the second spring 223 bolt 700 is engaged in the connecting hole 130 of the buckle cover 100, thereby fixing one end of the center fork plate 300 and the buckle 200 to one end of the buckle cover 100. The other end of the side fork plate 400 is connected to the end link of the watch strap. A ball 420 is inserted into the ball groove 430 in the middle of the side fork plate 400. The head 423 of the ball 420 can be fully retracted and does not protrude from the side fork plate 400.

[0048] Next, assemble the buckle 200 and the button 500. Place the button 500 in the button slide groove 220 of the buckle 200, and insert the spring 223 into the limiting groove 530 of the button 500. The limiting groove 530 and the spring groove 222 together position the spring 223, allowing the button 500 to extend and retract freely. Fully lock the button 500 in the buckle 200 and place it into the buckle cover 100, so that the button 500 pops out from the inside of the button 500 hole in the buckle cover 100. The first boss 540 and the second boss 550 of the button 500 will abut against the inner wall of the buckle cover 100 and limit it to prevent the button 500 from popping out completely from the button 500 hole. Meanwhile, the other end of the buckle 200 is connected to the buckle and the watch strap end piece via the first spring 223 bolt 600, and the buckle 200 is connected to the buckle cover 100 via the spring 223 pin 620 of the second spring 223 bolt 700 and the limiting engagement with the connecting hole 130 on the other side of the buckle cover 100.

[0049] Finally, the buckle 200 is connected to the strap end piece and fixed in the mounting groove 110 in the middle of the buckle cover 100. The strap end piece can rotate freely. The clip 500 is fixed between the buckle 200 and the buckle cover 100 and can extend and retract freely. The other end of the buckle 200 is connected to the center fork plate 300, which can rotate freely. The other end of the center fork plate 300 is connected to the side fork plate 400, which can also rotate freely. The other end of the side fork plate 400 is hinged to the strap end piece, thus completing the assembly of the entire buckle.

[0050] Furthermore, this utility model also discloses a watch strap, which includes the aforementioned ultra-thin double-sided push-button folding clasp, a first strap body installed at one end of the clasp and providing a first tail bolt, and a second strap body installed at the other end of the clasp and providing a second tail bolt. The first tail bolt is hinged to the clasp holder 200, and the second tail bolt is hinged to the side fork plate 400. The first and second strap bodies can be entirely made of metal, or only the first and second tail bolts can be made of metal, with the remaining parts being non-metallic.

[0051] In addition, this utility model also discloses a watch, which includes the aforementioned ultra-thin double-sided push-button folding clasp, a first strap body installed at one end of the clasp and providing a first tail link, a second strap body installed at the other end of the clasp and providing a second tail link, and a watch head disposed between the first and second strap bodies and hinged to the first and second strap bodies. The first tail link is hinged to the clasp holder 200, and the second tail link is hinged to the side fork plate 400. This watch head structure can be any commercially available watch head, or it can be a bracelet watch head. For example, the watch head includes a watch case, a movement housed in the watch case, a crown that rotates through the outer wall of the watch case and is driven by the movement, a dial housed in the watch case and located above the movement, a hand assembly disposed on the side of the dial facing away from the movement and driven by the movement, a watch glass fixed to the main surface of the watch case, and a case back fixed to the back of the watch case and encapsulating the movement, dial, and hand assembly together with the watch case. Its specific structure and connection method will not be described in detail here.

[0052] The ultra-thin double-sided push-button folding clasp, watch strap, and watch of this invention feature a clasp with the fastening and opening structure designed in the lateral direction. A locking structure is formed by the interaction of a ball bearing 420 mounted on the side of the fork plate 400 and the clasp holder 200. Unlocking is achieved by pressing the ball bearing 420 with a push-button 500. This design requires less space in the clasp's thickness direction, significantly reducing the clasp's thickness and allowing for a better fit to the watch strap. With no protrusions from the strap on either the inner or outer sides, the inner side of the clasp fits the wrist more snugly, improving the comfort of wearing the watch or smart wearable device. The outer side of the clasp is less prone to bumps and wear, extending its lifespan and enhancing the product's market competitiveness.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An ultra-thin double-sided push-button folding watch clasp, characterized in that, include: The cover has a mounting groove on its lower surface and a pressing hole that communicates with the mounting groove on each of its two opposite outer side walls. The buckle is housed in the mounting groove and fixedly connected to the buckle cover. One end of the buckle is hinged to the end of the watch strap. The lower surface of the buckle has a receiving groove. The upper surface of the buckle has two corresponding pressing holes on both sides and two pressing grooves that connect to the receiving groove. The lower surface of the buckle has two guide grooves that correspond to the pressing grooves and connect to the receiving groove. The top surface of the guide groove is an inclined guide surface that gradually increases in height from the edge of the buckle to the center of the buckle. The pressing assembly includes two buttons that slide through two pressing holes and elastically engage with the inner wall of the pressing groove along the width direction of the buckle. The buttons extend out of the pressing holes and are limited by the inner edge of the pressing holes. A center fork plate, one end of which is hinged to the other end of the buckle; The side fork plate, housed in a receiving groove, includes a first end that is hinged to the other end of the watch strap and a second end away from the first end. A slot is formed on the upper surface of the side fork plate that penetrates the end face of the second end. The other end of the middle fork plate is hinged to the second end of the side fork plate and can be rotatably embedded in the slot. Two corresponding guide grooves and two ball grooves for receiving balls are formed on the two opposite outer walls of the side fork plate. The balls retract into the ball grooves under the pressing of the button or the buckle, and extend out of the ball grooves when the middle fork plate is embedded in the slot to limit and abut against the bottom surface of the pressing slide.

2. The ultra-thin double-sided push-button folding watch clasp according to claim 1, characterized in that, The ultra-thin double-sided push-button folding clasp also includes a first spring bolt and a second spring bolt. The two ends of the clasp frame are respectively provided with a first mounting notch and a second mounting notch. One end of the watch strap is embedded in the first mounting notch. The first spring bolt passes through the first mounting notch and is sequentially connected to the end of the strap, the clasp frame, and the clasp cover. One end of the middle fork plate is embedded in the second mounting notch. The second spring bolt passes through the second mounting notch and is sequentially connected to the end of the middle fork plate, the clasp frame, and the clasp cover.

3. The ultra-thin double-sided push-button folding watch clasp according to claim 2, characterized in that, The middle fork plate has a T-shaped structure, including a horizontal part extending along the length of the buckle and a vertical part fixed at the end of the horizontal part and perpendicular to the horizontal part. The vertical part is embedded in the second mounting notch and is hinged to the buckle. The end of the horizontal part away from the vertical part is hinged to the side fork plate, and the upper surface of the first end of the side fork plate has an arc-shaped recess that conforms to the outer surface contour of the vertical part.

4. The ultra-thin double-sided push-button folding watch clasp according to claim 1, characterized in that, The pressing slide includes a limiting platform located above the guide groove and two spring grooves arranged on both sides of the limiting platform along the length direction of the buckle; the pressing includes a pressing part extending out of the pressing insertion hole and a limiting part facing away from the pressing part. The limiting part includes a pushing area corresponding to the limiting platform and two limiting grooves opened on both sides of the pushing area along the length direction of the buckle and corresponding to the two spring grooves one by one. The limiting grooves and the spring grooves together form a spring mounting area. A spring is provided in the spring mounting area, and the two ends of the spring abut against the inner wall of the spring groove and the inner wall of the limiting groove, respectively.

5. The ultra-thin double-sided push-button folding watch clasp according to claim 4, characterized in that, The upper surface of the press is provided with a first protrusion at the adjacent limiting part, and the lower surface of the press is provided with a second protrusion at the adjacent limiting part. The first protrusion and the second protrusion respectively abut against the inner edge of the press insertion hole.

6. The ultra-thin double-sided push-button folding watch clasp according to claim 1, characterized in that, The upper surface of the side fork plate has a raised center to form an arc-shaped protrusion, and the ball groove is formed on the arc-shaped protrusion.

7. The ultra-thin double-sided push-button folding watch clasp according to claim 1, characterized in that, The marble includes an installation cylinder fixed in the marble groove with an opening at one end, an annular elastic element housed in the installation cylinder, and a projectile inserted into the annular elastic element and extending out of the groove of the marble groove. A limiting ring is provided at the opening of the installation cylinder, and a protruding ring is provided on the middle annular side of the projectile. One side of the protruding ring abuts against the annular elastic element, and the other side of the protruding ring abuts against the inner edge of the limiting ring. When the projectile is compressed, it retracts into the marble groove and compresses the annular elastic element to cause deformation.

8. The ultra-thin double-sided push-button folding watch clasp according to claim 1, characterized in that, The cover, the bracket, the middle fork plate, and the side fork plate have the same curvature along the length of the cover. The thickness of the middle fork plate is less than or equal to the thickness of the side fork plate. When the side fork plate is received in the receiving groove, the lower surface of the side fork plate is flush with the lower surface of the cover, or the lower surface of the side fork plate is higher than the lower surface of the cover.

9. A watch strap, characterized in that, Including the ultra-thin double-sided push-button folding watch clasp as described in any one of claims 1-8.

10. A watch, characterized in that, Including the ultra-thin double-sided push-button folding watch clasp as described in any one of claims 1-8.

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