Quickly detachable watchband and watch

Abstract

The quick replacement watchband is quick to replace without tools, low in operation difficulty and not easy to scratch, and comprises a plurality of bead units connected in sequence, wherein each bead unit comprises a middle bead, a quick release assembly, and two side beads hingedly connected with the middle bead and provided with a plug hole on the inner side surface; the lower surface of the middle bead is provided with a sliding groove, the groove bottom surface is provided with two positioning grooves, the head of the middle bead is provided with a through hole communicating with the sliding groove, and the through hole forms an installation hole position on each side of the sliding groove; the quick release assembly comprises a lock key slidingly arranged in the sliding groove, a spring wave nail, and a telescopic rod arranged in the installation hole position; the two opposite sides of the lock key are provided with guide portions abutting against the tail of the telescopic rod, and the width of the guide portions increases or decreases along the sliding direction of the lock key; the head of the spring wave nail is selectively inserted into the positioning groove when the lock key slides, the head of the telescopic rod is extended out of the installation hole position when the lock key slides to a first position, and the head of the telescopic rod is reset and retracted into the installation hole position when the lock key slides to a second position; and the watch comprising the watchband is also disclosed.

Description

Technical Field

[0001] This utility model relates to the field of watch technology, and in particular to a quick-replacement watch strap and watch. Background Technology

[0002] Depending on the material, watch straps are mainly divided into steel straps, leather straps, and fabric straps. During watch wearing, the length of steel straps is mostly not adjustable, while leather and fabric straps can be adjusted by using a buckle pin with corresponding eyelets on the strap. Commercially available watches are primarily designed to meet the needs of the majority of users; therefore, once a steel watch model is selected, the strap size is often fixed. When a consumer purchases a watch with a strap size that doesn't fit their wrist, to avoid discomfort from significant wrist movement and damage from drops, consumers often need to remove some links to adjust the strap length and improve wearing comfort. Currently, steel watch strap links on the market are mainly connected using three types of pins: pins, screws, and hairpins. These three types of pins have simple structures, low cost, and can achieve a stable connection of the links. However, the disassembly and assembly of watch links require specialized tools, such as spring bar screwdrivers, precision screwdrivers, or pointed tweezers. This not only makes it inconvenient for users to replace the watch band themselves but also increases the difficulty and time cost of disassembly and assembly. In addition, when using the aforementioned pin-connected watch bands, there is a risk that tools may slip during disassembly and assembly, potentially scratching the watch case or watch band. Utility Model Content

[0003] Therefore, it is necessary to address the above-mentioned shortcomings by providing a quick-change watch strap and watch that can be easily replaced without the need for any tools, is easy to operate, and is not easily scratched.

[0004] A quick-release watch strap includes a plurality of sequentially connected bead units. Each bead unit includes a center bead, a quick-release assembly movably disposed on the center bead, and two side beads located on two opposite sides of the center bead and hinged to the center bead. The center bead and the side beads are offset, with the head of the center bead extending from the front end of the side beads, and an insertion area is formed between the two side beads for inserting the head of the center bead of an adjacent bead unit.

[0005] The lower surface of the middle bead is provided with a sliding groove, and the bottom surface of the sliding groove is provided with two positioning grooves. The head of the middle bead is provided with a through hole that penetrates the two opposite outer surfaces of the middle bead and communicates with the sliding groove. The through hole forms an installation hole on each side of the sliding groove.

[0006] The quick-release assembly includes a locking key slidably disposed within the groove and engaging with a central ball in the groove depth direction; a spring pin mounted on the locking key with its head corresponding to a positioning groove; and two telescopic rods, each corresponding to one of the two mounting holes and capable of elastic extension and retraction. The locking key has two guide portions on opposite sides, each corresponding to one of the two telescopic rods. The guide portions abut against the tails of the telescopic rods, and the width of the guide portions gradually increases or decreases along the sliding direction of the locking key. When the locking key slides, the head of the spring pin moves between the two positioning grooves and selectively inserts into one of them. When the locking key slides to the first position, the guide portion pushes against the telescopic rod, causing the head of the telescopic rod to extend from the mounting hole. When the locking key slides to the second position, the head of the telescopic rod retracts back into the mounting hole.

[0007] The inner side of the edge bead has a socket for inserting the telescopic rod of the adjacent bead unit.

[0008] In one embodiment, the lower surface of the middle bead is further provided with a through groove extending along the length of the middle bead and penetrating the front and rear ends of the middle bead. The sliding groove is formed on the bottom surface of the through groove, and the inner sidewall of the sliding groove has a limiting notch near the bottom surface of the sliding groove. The locking key includes a push plate disposed in the through groove and slidingly engaged with the inner side of the through groove, a main body fixed on the push plate and inserted into the sliding groove, and a limiting plate fixed on the main body facing away from the push plate. The edge of the limiting plate is inserted into the limiting notch and abuts against the inner wall of the limiting notch. The guide portion is formed on the side of the main body, and the spring wave pin is installed on the main body.

[0009] In one embodiment, a clearance ramp is provided on each side edge of the through slot, and a wedge-shaped clearance area is formed between the side of the locking key and the clearance ramp.

[0010] In one embodiment, the limiting plate has a groove extending into the main body on the side facing away from the main body. The spring pin includes a pin tube fixed in the groove, a first spring housed in the pin tube, and a spherical pin head. The top of the pin tube has an opening, and the diameter of the opening is smaller than the diameter of the spherical pin head. One end of the first spring is fixedly connected to the bottom wall of the pin tube, and the other end of the first spring abuts against the spherical pin head so that a portion of the spherical pin head extends out of the opening of the pin tube and is inserted into the positioning groove.

[0011] In one embodiment, the positioning groove is a conical groove, and the bottom surface of the slide groove is also provided with a guide groove located between and communicating with the two positioning grooves. The bottom surface of the guide groove is a convex arc surface, and the maximum depth of the guide groove is less than the depth of the positioning groove.

[0012] In one embodiment, the quick-release assembly further includes a second spring and a fixing pin tube fixed in the mounting hole. The fixing pin tube has a stepped hole, which includes a large-diameter portion adjacent to the slide groove and a small-diameter portion facing away from the slide groove and communicating with the large-diameter portion. The connection between the large-diameter portion and the small-diameter portion forms a step. The length of the telescopic rod is greater than the length of the fixing pin tube. An annular limiting protrusion is provided between the head and tail of the telescopic rod. The diameter of the annular limiting protrusion is greater than the diameter of the head of the telescopic rod and the diameter of the annular limiting protrusion is greater than the diameter of the tail of the telescopic rod. The second spring is housed in the large-diameter portion. One end of the second spring abuts against the step, and the other end of the second spring abuts against the annular limiting protrusion.

[0013] In one embodiment, the tail end face of the telescopic rod is a spherical or arc-shaped surface, and the guide portion is provided with a positioning plane and a guide slope located on one side of the positioning plane along the sliding direction of the locking key on the side adjacent to the telescopic rod.

[0014] In one embodiment, the inner side of the side bead is further provided with a first mounting hole and a second mounting hole. The insertion hole, the first mounting hole and the second mounting hole are arranged side by side in sequence along the direction close to the rear end face of the middle bead. The middle bead is provided with a connecting hole corresponding to the second mounting hole. The front end face of the middle bead is provided with a first clearance groove and the rear end face of the middle bead is provided with a second clearance groove.

[0015] The quick-change watch strap also includes a first connecting bolt and a second connecting bolt. The two ends of the first connecting bolt are respectively inserted into the first mounting holes of the two side beads and are fixedly connected to the two side beads. One side of the first connecting bolt is embedded in the second clearance groove, and the other side of the first connecting bolt is embedded in the first clearance groove of the middle bead of the adjacent bead unit. The second connecting bolt passes through the connecting hole and is respectively inserted into the second mounting holes of the two side beads. The second connecting bolt is fixedly connected to the two side beads.

[0016] In one embodiment, the first connecting bolt has first threads at both ends that are tightly fitted to the first mounting hole, and the second connecting bolt has second threads at both ends that are tightly fitted to the second mounting hole.

[0017] This utility model also discloses a watch that includes the aforementioned quick-change watch strap.

[0018] The watch strap and watch of this invention, which allow for quick replacement, feature a quick-release component on the central bead. By sliding the locking button, the guide part of the locking button cooperates with the telescopic rod. When the locking button is in the first position, it pushes the telescopic rod to extend, connecting with the edge bead of the adjacent bead unit. Alternatively, when the locking button is in the second position, the telescopic rod retracts and separates from the edge bead of the adjacent bead unit. This allows for the connection or separation of adjacent bead units without the need for any tools, reducing the difficulty and time cost of disassembling and assembling the watch strap. Since no external tools are required, it avoids scratching the watch strap or watch case, improving the safety of disassembling and assembling the watch strap. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the watch strap in a connected state in one embodiment of the present invention;

[0020] Figure 2 This is a structural diagram of the watch strap in a disassembled state in one embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the beaded unit from one perspective in one embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the beaded unit from another perspective in one embodiment of the present invention;

[0023] Figure 5 This is a cross-sectional view of the beaded unit when the locking key slides to the first position in one embodiment of the present invention.

[0024] Figure 6 This is a cross-sectional view of the beaded unit when the locking key slides to the second position in one embodiment of the present invention;

[0025] Figure 7 This is an exploded view of the beaded unit in one embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of the bead in one embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the locking key in one embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure of the spring wave nail in one embodiment of the present invention. Detailed Implementation

[0029] 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.

[0030] Example 1

[0031] Please combine Figure 1 and Figure 2 This utility model discloses a quick-release watch strap that can be easily replaced without any tools, is easy to operate, and is not easily scratched. The watch strap is a steel watch strap used to connect to the watch head so that the watch can be worn on the user's wrist. The watch strap includes a number of sequentially connected bead units 10, each bead unit 10 constituting a link of the watch strap. The bead unit 10 includes a center bead 100, a quick-release assembly 200 movably disposed on the center bead 100, and two side beads 300 located on two opposite sides of the center bead 100 and hinged to the center bead 100. The center bead 100 and the side beads 300 are offset, and the head of the center bead 100 extends from the front end of the side bead 300. An insertion area 400 is formed between the two side beads 300 for inserting the head of the center bead 100 of the adjacent bead unit 10. In this way, the head of the middle bead 100 of each bead unit 10 is inserted into the insertion area 400 of the previous bead unit 10 and mates with the side bead 300 of the previous bead unit 10. The insertion area 400 of each bead unit 10 is used to insert the head of the middle bead 100 of the next bead unit 10, so that the side bead 300 mates with the middle bead 100 of the next bead unit 10, thereby forming a complete watch strap. In this embodiment, the head of the middle bead 100 is the portion of the middle bead 100 away from the insertion area 400, the tail of the middle bead 100 is the portion of the middle bead 100 adjacent to the insertion area 400, the front end face of the middle bead 100 is the end face of the middle bead 100 away from the insertion area 400, and the rear end face of the middle bead 100 is the side of the middle bead 100 located within the insertion area 400. The length direction of the middle bead 100 is the length direction of the watch strap, and the width direction of the middle bead 100 is the width direction of the watch strap. The length direction of the side bead 300 is the length direction of the watch strap, and the width direction of the side bead 300 is the width direction of the watch strap. The front end of the side bead 300 is the end of the side bead 300 adjacent to the head of the middle bead 100. This explanation can also be used as a reference in other embodiments. In this embodiment, the length of the side bead 300 is the same as the length of the middle bead 100 to reduce the gap width between adjacent bead units 10 in the watch strap.

[0032] Please combine Figure 1-7When worn, the upper surface of the watch strap faces away from the user's wrist, while the lower surface fits against the user's wrist. The quick-release assembly 200 is located on the side where the lower surface of the watch strap is located, so as to hide the quick-release assembly 200 and reduce its impact on the appearance of the watch strap. In this embodiment, the lower surface of the middle bead 100 (the side of the middle bead 100 that fits against the user's wrist) is provided with a groove 110. The bottom surface of the groove 110 is provided with two positioning grooves 120. The head of the middle bead 100 is provided with a through hole that penetrates the two opposite outer surfaces of the middle bead 100 and communicates with the groove 110. The through hole forms a mounting hole 130 on each side of the groove 110. After the middle bead 100 is connected to the side bead 300, the mounting hole 130 is not blocked by the side bead 300, so that when the middle bead 100 is assembled with the adjacent bead unit 10, the mounting hole 130 is aligned with the corresponding hole in the insertion area 400 of the adjacent bead unit 10. The quick-release assembly 200 includes a locking key 210 that is slidably disposed in the slide groove 110 and engages with the middle bead 100 along the depth direction of the slide groove 110, a spring wave pin 220 that is mounted on the locking key 210 and whose head corresponds to the positioning groove 120, and two telescopic rods 230 that are installed one-to-one in the two mounting holes 130 and can be elastically extended and retracted. In other words, in this embodiment, the locking key 210 can slide within the groove 110, and by limiting the locking key 210 and the middle bead 100 along the depth direction of the groove 110, the locking key 210 can be confined within the groove 110 to prevent it from falling out and ensure the stability of the bead unit 10 structure. The installation position of the spring wave pin 220 needs to meet the requirement that the head of the spring wave pin 220 is located at the bottom of the locking key 210 so that the head of the spring wave pin 220 can be limited and engaged with the positioning groove 120. In this embodiment, the telescopic rod 230 engages with the middle bead 100 via an elastic element. Thus, the telescopic rod 230 can extend from the mounting hole 130 when the applied pressure increases, engaging with the hole in the insertion area 400 of the adjacent beaded unit 10. It automatically retracts when the pressure decreases or is released, disengaging the telescopic rod 230 from the side bead 300 of the adjacent beaded unit 10, thereby separating the adjacent beaded units 10. The locking key 210 has two guide portions on opposite sides, corresponding to the two telescopic rods 230. Each guide portion abuts against the tail of the telescopic rod 230. Each guide portion pushes against the telescopic rod 230 when the locking key 210 slides, adjusting the position of the telescopic rod 230. The width of the guide gradually increases or decreases along the sliding direction of the locking key 210, so that the distance between the center of the locking key 210 and the tail of the telescopic rod 230 gradually changes during the sliding of the locking key 210 in the slide groove 110, thereby causing the extrusion force on the telescopic rod 230 to gradually change, so that the telescopic rod 230 retracts into the mounting hole 130 during the process of the elastic member restoring its deformation.When the locking key 210 slides, the head of the spring wave pin 220 moves between two positioning grooves 120 and selectively inserts into one of them. When the locking key 210 slides to the first position, the guide part pushes against the telescopic rod 230, so that the head of the telescopic rod 230 extends out of the mounting hole 130. When the locking key 210 slides to the second position, the head of the telescopic rod 230 returns to its original position and retracts into the mounting hole 130. The inner side of the side bead 300 is provided with a socket 310 for inserting the telescopic rod 230 of the adjacent bead unit 10. In this way, by inserting the telescopic rod 230 into the socket 310 of the side bead 300 of the adjacent bead unit 10, the side bead 300 and the middle bead 100 of the adjacent bead unit 10 can be constrained, thereby realizing the connection between the two adjacent bead units 10.

[0033] In this embodiment, when the locking key 210 slides to the first position within the slide groove 110, the head of the spring wave pin 220 inserts into a positioning groove 120 and engages with the inner wall of the positioning groove 120. When the locking key 210 slides to the second position within the slide groove 110, the head of the spring wave pin 220 inserts into another positioning groove 120 and engages with the inner wall of the positioning groove 120. Thus, through the mutual constraint between the spring wave pin 220 and the positioning groove 120, the positioning of the spring wave pin 220 and the locking key 210 can be achieved, preventing the locking key 210 from automatically sliding within the slide groove 110 and causing the beaded unit 10 to open automatically, thereby ensuring the stability and reliability of the watch strap structure.

[0034] Please combine Figure 1-6After multiple beaded units 10 are connected, the locking key 210 is in the first position, at which point the distance between the center of the locking key 210 and the tail of the telescopic rod 230 is at its maximum. When it is necessary to separate the watch strap, the locking key 210 is moved, causing it to slide to the second position within the slide groove 110. During this process, as the locking key 210 slides, the tail of the telescopic rod 230 comes into contact with the guide, and the distance between the center of the locking key 210 and the tail of the telescopic rod 230 gradually decreases. The pressure exerted by the guide on the telescopic rod 230 decreases, and the telescopic rod 230 is reset and retracted into the mounting hole 130 under the action of the elastic element until the telescopic rod 230 completely leaves the insertion hole 310 of the adjacent beaded unit 10. The constraint between the two adjacent beaded units 10 is released, and the watch strap can be separated into multiple beaded units 10. Conversely, when assembling the watch strap, the head of the middle bead 100 of one bead unit 10 is inserted into the insertion area 400 of the adjacent bead unit 10, and the locking key 210 is reversed to move from the second position to the first position. During this process, as the locking key 210 slides, the tail of the telescopic rod 230 fits against the guide, and the distance between the center of the locking key 210 and the tail of the telescopic rod 230 gradually increases. The pressure of the guide on the telescopic rod 230 increases, thereby pushing the telescopic rod 230 so that it extends out of the mounting hole 130 so that the telescopic rod 230 can be inserted into the insertion hole 310 of the adjacent bead unit 10, thereby connecting the two adjacent bead units 10.

[0035] Please combine Figure 5-10The lower surface of the middle bead 100 is provided with a through groove 140 extending along the length of the middle bead 100 and penetrating the front and rear ends of the middle bead 100. A sliding groove 110 is formed on the bottom surface of the through groove 140. The dimension of the sliding groove 110 along the length of the middle bead 100 is smaller than the dimension of the through groove 140 along the length of the middle bead 100. A limiting notch 150 is formed on the inner sidewall of the sliding groove 110 near the bottom surface of the sliding groove 110. The locking key 210 includes a push plate 211 disposed in the through groove 140 and slidingly engaged with the inner side of the through groove 140, a main body 212 fixed on the push plate 211 and inserted into the sliding groove 110, and a limiting plate 213 fixed on the main body 212 facing away from the push plate 211. The edge of the limiting plate 213 is inserted into the limiting notch 150 and abuts against the inner wall of the limiting notch 150. A guide portion is formed on the side of the main body 212, and a spring wave pin 220 is mounted on the main body 212. The sliding engagement between the through groove 140 and the push plate 211 guides the sliding of the locking key 210, preventing it from wobbling during sliding. The slide groove 110 accommodates the locking key 210 and limits its sliding range. The push plate 211 serves as a gripper when the user moves the locking key 210. It also seals the opening of the slide groove 110 to prevent debris from falling into it and obstructing the sliding of the locking key 210. In this embodiment, anti-slip textures can be provided on the side of the push plate 211 facing away from the main body 212 to prevent slippage when the user moves the locking key 210, reducing the difficulty of moving it. In this embodiment, the push plate 211 has a graphic mark 214 indicating locking and unlocking with an arrow on the side facing away from the main body 212. This graphic mark 214 is engraved on the surface of the push plate 211. This serves two purposes: firstly, it indicates to the user the direction of locking and unlocking the latch key 210; secondly, the graphic mark 214 also acts as an anti-slip texture to reduce the difficulty of moving the latch key 210. In addition, in this embodiment, at least a portion of the limiting plate 213 protrudes from the side edge of the main body 212 to form a limiting part that can be inserted into the limiting notch 150. Thus, through the limiting cooperation between the limiting plate 213 and the limiting notch 150, the latch key 210 can be restricted within the slide groove 110, preventing the latch key 210 from falling out of the slide groove 110 and causing the latch key 210 to fail to constrain the telescopic rod 230, thereby ensuring the stability of the watch strap structure.

[0036] In one embodiment, a clearance ramp 141 is provided on each side edge of the slot 140 opening, and a wedge-shaped clearance area is formed between the side of the locking key 210 and the clearance ramp 141. By providing clearance ramps 141 on the side edges of the slot 140 opening, when disassembling the bead unit 10, tools (such as tweezers) can be inserted into the wedge-shaped clearance area and the side wall of the push plate 211 can be grasped, thereby reducing the difficulty of removing the locking key 210 from the slot 140.

[0037] The limiting plate 213 has a groove 215 extending into the main body 212 on its side facing away from the main body 212. The spring wave nail 220 includes a nail tube 221 fixed in the groove 215, a first spring 222 housed in the nail tube 221, and a spherical nail head 223. The top of the nail tube 221 has an opening, and the diameter of the opening is smaller than the diameter of the spherical nail head 223. One end of the first spring 222 is fixedly connected to the bottom wall of the nail tube 221, and the other end of the first spring 222 abuts against the spherical nail head 223 so that a part of the spherical nail head 223 extends out of the opening of the nail tube 221 and is inserted into the positioning groove 120. Furthermore, the positioning groove 120 is a conical groove, and the bottom surface of the slide groove 110 also has a guide groove 121 located between and communicating with the two positioning grooves 120. The bottom surface of the guide groove 121 is a convex arc surface, and the maximum depth of the guide groove 121 is less than the depth of the positioning groove 120. By setting the guide groove 121 with a convex arc surface at the bottom, the locking key 210 can slide between the two positioning grooves 120 when subjected to external force, which helps to reduce the wear of the ball head 223 and extend the service life of the spring wave pin 220. In addition, by making the maximum depth of the guide groove 121 less than the depth of the positioning groove 120, when the ball head 223 of the spring wave pin 220 is embedded in one positioning groove 120, the ball head 223 is limited by the inner wall of the positioning groove 120, which can prevent the ball head 223 from sliding along the guide groove 121 to the other positioning groove 120 without being subjected to external force, thus preventing the watch strap from opening on its own and ensuring the stability of the watch strap structure.

[0038] In one embodiment, the quick-release assembly 200 further includes a second spring 240 and a fixed needle tube 250 fixed in the mounting hole 130. The fixed tube has a stepped hole, which includes a large-diameter portion 251 adjacent to the slide groove 110 and a small-diameter portion 252 facing away from the slide groove 110 and communicating with the large-diameter portion 251. The connecting part of the large-diameter portion 251 and the small-diameter portion 252 forms a step. The length of the telescopic rod 230 is greater than the length of the fixed needle tube 250. An annular limiting protrusion 231 is provided between the head and tail of the telescopic rod 230. The diameter of the annular limiting protrusion 231 is greater than the diameter of the head of the telescopic rod 230 and the diameter of the tail of the telescopic rod 230 is greater. The head of the telescopic rod 230 is located on the side of the small-diameter portion 252 and extends out of the small-diameter portion 252 when the telescopic rod 230 is pushed. The tail of the telescopic rod 230 is located on the side of the large-diameter portion 251 and extends out of the large-diameter portion 251 under the push of the second spring 240. The second spring 240 is housed within the large-diameter portion 251. One end of the second spring 240 abuts against the step, and the other end abuts against the annular limiting protrusion 231. In this embodiment, the second spring 240 provides the power for the telescopic rod 230 to return to its original position when the force on the telescopic rod decreases, so that the telescopic rod 230 can return to its original position and retract into the mounting hole 130 when the locking key 210 slides to the second position, providing an automatic return function for the telescopic rod 230.

[0039] Furthermore, in this embodiment, the outer diameter of the middle part of the needle tube 250 is the same as the inner diameter of the mounting hole 130. The outer diameter of the side of the needle tube 250 adjacent to the slide groove 110 is smaller than the inner diameter of the mounting hole 130, and the outer diameter of the side of the needle tube 250 away from the slide groove 110 is larger than the inner diameter of the mounting hole 130. Thus, during the installation of the needle tube 250, it can be fixed in the mounting hole 130 by the interference fit (tight fit connection) between the end of the needle tube 250 away from the slide groove 110 and the mounting hole 130. During the installation of the needle tube 250, the needle tube 250 is inserted into the mounting hole 130 from the side of the middle bead 100 facing away from the slide groove 110. By making the outer diameter of the side of the needle tube 250 adjacent to the slide groove 110 smaller than the inner diameter of the mounting hole 130, the difficulty of inserting the needle tube 250 into the mounting hole 130 can be reduced.

[0040] In one embodiment, the tail end face of the telescopic rod 230 is a spherical or arc-shaped surface. A positioning plane 216 and a guide slope 217 located on one side of the positioning plane 216 are sequentially provided on the guide portion adjacent to the telescopic rod 230 along the sliding direction of the locking key 210. By providing the positioning plane 216, a larger area can stably support the tail of the telescopic rod 230 when the locking key 210 slides to the first position, preventing the tail of the telescopic rod 230 from sliding along the guide slope 217 due to the locking key 210 shaking, thus ensuring the stability of the entire watchband structure when the locking key 210 slides to the first position. By making the tail end face of the telescopic rod 230 a spherical or arc-shaped surface, the friction between the tail of the telescopic rod 230 and the guide portion can be reduced, thereby extending the service life of the telescopic rod 230 and the locking key 210. In other embodiments, the guide slope 217 may also be replaced by a convex or concave arc surface whose height gradually increases or decreases along the sliding direction of the locking key 210. The height of the guide slope 217 refers to the distance from the guide slope 217 to the center of the locking key 210.

[0041] In addition, a positioning slope is provided on the side of the positioning plane 216 facing away from the guide slope, and the edge of the limiting plate 213 protrudes from the edge of the main body 212 to form a positioning boss. The length of the fixing needle tube 250 is greater than the length of the mounting hole 130. After the fixing needle tube 250 is fixed in the mounting hole 130, a part of the fixing needle tube 250 is inserted into the slide groove 110. The length of the part of the fixing needle tube 250 inserted into the slide groove 110 needs to be sufficient to avoid interfering with the sliding of the locking key 210, and the part of the fixing needle tube 250 inserted into the slide groove 110 abuts against the positioning boss. In this way, the positioning of the locking key 210 along the depth direction of the slide groove 110 is achieved through the joint cooperation of the limiting notch 150 and the fixing needle tube 250. In this embodiment, the corner of the inner wall of the slide groove 110 is provided with rounded corners, and correspondingly, the corner of the main body 212 of the locking key 210 is also provided with rounded corners.

[0042] In one embodiment, the inner side of the side bead 300 is also provided with a first mounting hole 320 and a second mounting hole 330. The insertion hole 310, the first mounting hole 320 and the second mounting hole 330 are arranged side by side in sequence along the direction close to the rear end face of the middle bead 100. The middle bead 100 is provided with a connecting hole 160 corresponding to the second mounting hole 330. The front end face of the middle bead 100 is provided with a first clearance groove 101 and the rear end face of the middle bead 100 is provided with a second clearance groove 102. The quick-change watch strap also includes a first connecting bolt 500 and a second connecting bolt 600. The two ends of the first connecting bolt 500 are respectively inserted into the first mounting holes 320 of the two side beads 300 and are fixedly connected to them. One side of the first connecting bolt 500 is embedded in the second recessed groove 102, and the other side is embedded in the first recessed groove 101 of the middle bead 100 of the adjacent bead unit 10. The second connecting bolt 600 passes through the connecting hole 160 and is respectively inserted into the second mounting holes 330 of the two side beads 300, and is fixedly connected to them. Furthermore, the two ends of the first connecting bolt 500 are provided with first threads 510 that are tightly fitted into the first mounting holes 320, and the two ends of the second connecting bolt 600 are provided with second threads 610 that are tightly fitted into the second mounting holes 330. In this embodiment, by opening a first clearance groove 101 on the front end face of the middle bead 100 and a second clearance groove 102 on the rear end face of the middle bead 100, during the assembly of the watch strap, the first connecting bolt 500 can be enclosed by the first clearance groove 101 and the second clearance groove 102 of the middle beads 100 of two adjacent bead units 10. In this way, while realizing the fixed connection of two side beads 300 in the same bead unit 10 and the hinge connection between the middle bead 100 and the side beads 300, the first connecting bolt 500 is shielded, which can reduce the influence of the first connecting bolt 500 on the shape of the watch strap. Moreover, when the middle bead 100 is subjected to external force, it can rotate under the joint constraint of the first connecting bolt 500 and the second connecting bolt 600, which is beneficial to controlling the rotation angle of the bead unit 10.

[0043] Example 2

[0044] This utility model also discloses a watch, which includes the aforementioned quick-change watch strap and a watch head connected to the watch strap. The watch head can be the watch head of any watch on the market, including mechanical watch heads, quartz watch heads, and smart watch heads, which will not be described in detail here. The structure of the quick-change watch strap is exactly the same as that of the quick-change watch strap in Embodiment 1, and will not be described in detail here.

[0045] The watch strap and watch of this utility model with quick-release mechanism are provided with a quick-release component 200 on the central bead 100. By sliding the locking button 210, the guide part of the locking button 210 cooperates with the telescopic rod 230. When the locking button 210 is in the first position, it pushes the telescopic rod 230 to extend, so as to connect with the side bead 300 of the adjacent bead unit 10. Alternatively, when the locking button 210 is in the second position, the telescopic rod 230 retracts and separates from the side bead 300 of the adjacent bead unit 10. This allows for the connection or separation of adjacent bead units 10 without the need for any tools, reducing the difficulty and time cost of disassembling and assembling the watch strap. Since no external tools are needed, it avoids scratching the watch strap or watch case, thus improving the safety of disassembling and assembling the watch strap.

[0046] 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.

[0047] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but 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. A quick-change watchband, characterized by, The device includes several beaded units connected in sequence. Each beaded unit includes a central bead, a quick-release assembly movably disposed on the central bead, and two side beads located on two opposite sides of the central bead and hinged to the central bead. The central bead and the side beads are staggered, with the head of the central bead extending from the front end of the side beads. An insertion area is formed between the two side beads for inserting the head of the central bead of an adjacent beaded unit. The lower surface of the middle bead is provided with a sliding groove, and the bottom surface of the sliding groove is provided with two positioning grooves. The head of the middle bead is provided with a through hole that penetrates the two opposite outer surfaces of the middle bead and communicates with the sliding groove. The through hole forms an installation hole on each side of the sliding groove. The quick-release assembly includes a locking key slidably disposed within the groove and engaging with a central ball in the groove depth direction; a spring pin mounted on the locking key with its head corresponding to a positioning groove; and two telescopic rods, each corresponding to one of the two mounting holes and capable of elastic extension and retraction. The locking key has two guide portions on opposite sides, each corresponding to one of the two telescopic rods. The guide portions abut against the tails of the telescopic rods, and the width of the guide portions gradually increases or decreases along the sliding direction of the locking key. When the locking key slides, the head of the spring pin moves between the two positioning grooves and selectively inserts into one of them. When the locking key slides to the first position, the guide portion pushes against the telescopic rod, causing the head of the telescopic rod to extend from the mounting hole. When the locking key slides to the second position, the head of the telescopic rod retracts back into the mounting hole. The inner side of the edge bead has a socket for inserting the telescopic rod of the adjacent bead unit.

2. The quick-change watchband of claim 1, wherein, The lower surface of the middle bead is also provided with a through groove extending along the length of the middle bead and penetrating the front and rear ends of the middle bead. The sliding groove is opened on the bottom surface of the through groove, and the inner sidewall of the sliding groove has a limiting notch near the bottom surface of the sliding groove. The locking key includes a push plate disposed in the through groove and slidingly engaged with the inner side of the through groove, a main body fixed on the push plate and inserted into the sliding groove, and a limiting plate fixed on the main body facing away from the push plate. The edge of the limiting plate is inserted into the limiting notch and abuts against the inner wall of the limiting notch. The guide part is formed on the side of the main body, and the spring wave pin is installed on the main body.

3. The quick-change watchband of claim 2, wherein, Each side edge of the through slot opening is provided with a clearance slope, and a wedge-shaped clearance area is formed between the side of the locking key and the clearance slope.

4. The quick-change watchband of claim 2, wherein, The limiting plate has a groove extending into the main body on the side facing away from the main body. The spring wave nail includes a nail tube fixed in the groove, a first spring housed in the nail tube, and a spherical nail head. The top of the nail tube has an opening, and the diameter of the opening is smaller than the diameter of the spherical nail head. One end of the first spring is fixedly connected to the bottom wall of the nail tube, and the other end of the first spring abuts against the spherical nail head so that a part of the spherical nail head extends out of the opening of the nail tube and is inserted into the positioning groove.

5. The quick-change watchband of claim 1, wherein, The positioning groove is a conical groove, and the bottom surface of the sliding groove is also provided with a guide groove located between the two positioning grooves and connected to the two positioning grooves. The bottom surface of the guide groove is a convex arc surface, and the maximum depth of the guide groove is less than the depth of the positioning groove.

6. The quick-change watchband of claim 1, wherein, The quick-release assembly also includes a second spring and a fixing pin tube fixed in the mounting hole. The fixing pin tube has a stepped hole, which includes a large-diameter portion adjacent to the slide groove and a small-diameter portion facing away from the slide groove and communicating with the large-diameter portion. The connection between the large-diameter portion and the small-diameter portion forms a step. The length of the telescopic rod is greater than the length of the fixing pin tube. An annular limiting protrusion is provided between the head and tail of the telescopic rod. The diameter of the annular limiting protrusion is greater than the diameter of the head of the telescopic rod and the diameter of the annular limiting protrusion is greater than the diameter of the tail of the telescopic rod. The second spring is housed in the large-diameter portion. One end of the second spring abuts against the step, and the other end of the second spring abuts against the annular limiting protrusion.

7. The quick-change watchband of claim 1, wherein, The tail end face of the telescopic rod is a spherical or arc-shaped surface. On the guide part, a positioning plane and a guide slope located on one side of the positioning plane are sequentially provided along the sliding direction of the locking key on the side adjacent to the telescopic rod.

8. The quick-replacement watch strap according to claim 1, characterized in that, The inner side of the side bead is also provided with a first mounting hole and a second mounting hole. The insertion hole, the first mounting hole and the second mounting hole are arranged side by side in sequence along the direction close to the rear end face of the middle bead. The middle bead is provided with a connecting hole corresponding to the second mounting hole. The front end face of the middle bead is provided with a first clearance groove and the rear end face of the middle bead is provided with a second clearance groove. The quick-change watch strap also includes a first connecting bolt and a second connecting bolt. The two ends of the first connecting bolt are respectively inserted into the first mounting holes of the two side beads and are fixedly connected to the two side beads. One side of the first connecting bolt is embedded in the second clearance groove, and the other side of the first connecting bolt is embedded in the first clearance groove of the middle bead of the adjacent bead unit. The second connecting bolt passes through the connecting hole and is respectively inserted into the second mounting holes of the two side beads. The second connecting bolt is fixedly connected to the two side beads.

9. The quick-change watchband of claim 8, wherein, The first connecting bolt has first threads at both ends that are tightly fitted to the first mounting hole, and the second connecting bolt has second threads at both ends that are tightly fitted to the second mounting hole.

10. A watch, characterized in that, Includes the quick-change watch strap as described in any one of claims 1-9.

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