Watch buckle with surface cover fine adjustment function and watch

Abstract

The utility model discloses a watch buckle with a surface cover fine tuning function and a watch. The watch buckle comprises a core, a frame, a surface cover and a fine tuning system. The surface cover is connected to the upper surface of the manufactured frame, and the first end of the manufactured frame is hinged to the first end of the manufactured core; the fine adjustment system comprises a level needle, a telescopic lock tooth piece and an assembly groove, and the telescopic lock tooth piece is assembled on the inner side of the surface cover through the level needle and is partially embedded into the assembly groove; when the level needle is pressed towards the side edge of the surface cover, the level needle pushes the telescopic tooth locking piece to be separated from the tooth groove part of the assembly groove, and when the level needle is pushed to move in the length direction of the frame, the level needle drives the telescopic tooth locking piece and the surface cover to move synchronously until the level needle is released, the telescopic tooth locking piece is clamped to a new tooth groove part. According to the utility model, after the core and the frame are clamped, the telescopic tooth locking piece is adjusted to be clamped with different tooth groove parts by pressing the level needle, so that the fine adjustment of the surface cover and the core is realized.

Description

Technical Field

[0001] The present application relates to the technical field of watches, and more specifically, to a watch buckle with a face cover fine-tuning function and a watch. Background Art

[0002] A watch, or wristwatch, is an instrument worn on the wrist to measure / display time. It is usually composed of a clasp, a strap and a case. The clasp is mostly made of stainless steel or titanium and is a movable device.

[0003] There are three types of buckles currently used in the industry: the most common single-pin buckle; the second is the two-fold belt buckle; the third is the double-open butterfly belt buckle. Belts are usually adjusted in length by using the hole on the longer belt. As people's living standards improve, they have higher requirements for comfort and convenience. When customers with small wrists wear watches, the buckle set in the middle is not comfortable to adjust, and each adjustment requires taking off the strap, which is troublesome. Utility Model Content

[0004] In order to improve the situation that the watch strap has to be disassembled every time the wearing length of the watch is adjusted and to improve the convenience when the wearing length of the watch is adjusted, the utility model provides a watch buckle with a face cover fine-adjustment function.

[0005] The technical solution of the utility model is: to provide a watch buckle with a cover fine-tuning function, comprising a core, a frame, a cover and a fine-tuning system, and the watch buckle with a cover fine-tuning function is connected to a watch band through the core and the cover; the cover is connected to the upper surface of the frame, and the first end of the frame is hinged to the first end of the core;

[0006] The fine-tuning system includes a level pin, a telescopic locking tooth piece and an assembly groove, and the assembly groove is located on the upper surface of the frame; the assembly groove includes a rectangular groove portion and a plurality of tooth groove portions arranged along the length direction of the frame, the telescopic locking tooth piece is assembled on the inner side of the face cover through the level pin, and the face cover is assembled to the frame in a manner that the telescopic locking tooth piece is partially embedded in the assembly groove;

[0007] One end of the level pin is connected to the telescopic locking tooth piece, and the other end extends out of the side edge of the face cover. When the level pin is pressed toward the side edge of the face cover, the telescopic locking tooth piece is pushed to slide in the assembly groove along the width direction of the frame and disengage from the tooth groove portion of the assembly groove. When the level pin is pushed to move along the length direction of the frame, the telescopic locking tooth piece and the face cover are driven to move synchronously until the telescopic locking tooth piece is released to engage with a new tooth groove portion.

[0008] Preferably, the telescopic locking tooth member comprises a connecting column and a clamping block, the connecting column is provided with a first connecting hole connected to the level pin; the clamping block is connected to the lower surface of the connecting column and protrudes from one end of the connecting column close to the level pin along the width direction of the frame, and when the face cover is assembled to the frame, the clamping block is embedded in the assembly groove;

[0009] The dimension of the rectangular groove in the direction of the width of the frame is greater than the dimension of the snap-in block in the direction of the width of the frame; the tooth groove portion includes a plurality of protrusions and grooves arranged at intervals along the length direction of the frame, the groove openings face away from the edge of the frame, and each of the grooves is adapted to the shape of the free end of the snap-in block.

[0010] Preferably, the clasp includes two positioning pins, two assembly grooves and two telescopic locking tooth parts, and the two telescopic locking tooth parts are respectively assembled on the inner side of the face cover through the two positioning pins, and the two telescopic locking tooth parts and the two positioning pins are arranged along the width direction of the frame, and when the two positioning pins are pressed, the two telescopic locking tooth parts move toward each other until they are separated from the tooth groove part.

[0011] Preferably, the face cover includes two ears, and the fine-tuning system also includes a spring pin;

[0012] The two ears are connected to the side of the cover facing the frame and are located at two ends of the width direction of the cover, and the ears are provided with a first connection hole for the level pin to pass through;

[0013] The connecting column of each telescopic locking tooth piece is also provided with a second connecting hole adapted to the spring pin, and the spring pin is installed between the two telescopic locking tooth pieces in a manner that the two ends of the spring pin are respectively inserted into the second connecting holes of the two connecting columns; the level pin is assembled on the face cover through the first connecting hole on the ear.

[0014] Preferably, the frame further includes two adjusting firmwares, which are respectively fixed on both sides of the width direction of the frame; the adjusting firmware is provided with a sliding groove for the level pin to pass through, the sliding groove is arranged along the length direction of the frame, and the level pin drives the face cover and the telescopic locking tooth part to move synchronously along the length direction of the frame by moving in the sliding groove.

[0015] Preferably, the frame further comprises two telescopic hooks and a first clearance groove for accommodating the telescopic hooks, wherein the first clearance groove is arranged along the width direction of the frame and communicates with the two side edges of the frame; a mushroom head is arranged on the upper surface of the core, and a first through hole for the mushroom head to pass through is arranged at the bottom of the first clearance groove;

[0016] Each of the telescopic hooks is provided with a second clearance groove, and the two telescopic hooks are centrally symmetrically distributed with the center of the first through hole as the center, and the groove walls of the two second clearance grooves are enclosed to form a accommodating space for the mushroom head to be extended and retracted, and are assembled in the first clearance groove; the second clearance groove is also provided with a barb that is engaged with the mushroom head, and the barb is located on the side of the second clearance groove close to the end of the telescopic hook, and the mushroom head passes through the first through hole into the accommodating space formed by the second clearance groove and is engaged with the barb.

[0017] Preferably, the ends of the telescopic hooks that are away from each other are also provided with a step, and the clasp also includes a button, and the button is provided with a connecting groove adapted to the first step, one end of the telescopic hook protrudes from the edge of the adjustment firmware and is engaged with the button, and the cross-sectional area of ​​the button is larger than the cross-sectional area of ​​the first step.

[0018] Preferably, the frame further includes a second through hole on the same side as the first give way groove, and the clasp further includes a pressure plate, which is pressed onto one end of the adjusting fixture connected to a telescopic hook, the pressure plate is provided with a third through hole, and the adjusting fixture is provided with a fourth through hole, and the fine-tuning system is locked and fixed to the frame via fasteners that pass through the adjusting fixture and the pressure plate in sequence.

[0019] Preferably, the core-making head is hinged with a screw rod for connecting a watch strap, and the lower surface of the face cover is vertically connected with a mushroom nail head for connecting another watch strap.

[0020] Compared with the prior art, the utility model has the following beneficial effects: when the core and the frame are clamped, the face cover is connected to the frame by partially embedding the telescopic lock tooth part into the assembly groove, and under the pressure of the level pin, the telescopic lock tooth part is adjusted to be embedded with different tooth groove parts in the assembly groove, thereby changing the relative position of the face cover and the frame, thereby realizing fine adjustment of the buckle without disassembling the core and the frame.

[0021] The utility model also provides a watch, comprising a watch case, a watch band and the above-mentioned watch buckle, wherein the watch band is connected to two sides of the watch case and is buckled with each other through the watch buckle.

[0022] Compared with the prior art, the utility model has the following beneficial effects: the watch strap and the watch case are connected by the watch buckle with the face cover fine-adjustment function, so the convenience of adjusting the watch buckle can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an exploded view of a watch buckle with a cover fine-adjustment function according to an embodiment of the present application;

[0024] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0025] Figure 3 This is a schematic diagram of the internal structure of a watch buckle with a cover fine-adjustment function according to an embodiment of the present application;

[0026] Figure 4 is a cross-sectional view of a watch buckle with a cover fine-adjustment function according to an embodiment of the present application;

[0027] Figure 5 It is a structural schematic diagram of a watch buckle core and frame opening with a cover fine-tuning function according to an embodiment of the present application;

[0028] Figure 6 It is a structural schematic diagram of a buckle core and frame clamping connection with a cover fine-tuning function in an embodiment of the present application.

[0029] Description of Reference Numerals

[0030] 1. Core making; 11. Mushroom head; 12. Screw rod; 2. Frame making; 21. First clearance groove; 211. First through hole; 22. Second through hole; 23. Press plate; 231. Third through hole; 3. Surface cover; 31. Ear; 311. First connecting hole; 32. Mushroom nail head; 4. Level pin; 5. Telescopic locking tooth piece; 51. Connecting column; 511. Second connecting hole; 52. Snap-in block; 6. Assembly groove; 61. Rectangular groove portion; 62. Tooth groove portion; 621. Protrusion; 622. Groove; 7. Spring pin; 8. Adjustment fixture; 81. Sliding groove; 82. Fourth through hole; 9. Telescopic hook; 91. Second clearance groove; 911. Barb; 92. First step; 93. Pressing; 931. Connecting groove; 94. Spring. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] like Figure 1-6 As shown, the utility model discloses a watch buckle with a cover fine-adjustment function.

[0033] See also Figure 1 The watch buckle with the cover fine-tuning function in this embodiment can be assembled to the watch strap and realize the wearing of the watch. The watch buckle with the cover fine-tuning function in this embodiment includes a core 1, a frame 2, a cover 3 and a fine-tuning system, and the watch buckle with the cover fine-tuning function is connected to the watch strap through the core 1 and the cover 3; specifically, the two ends of the two straps away from the dial are respectively connected to the cover 3 and the core 1, the cover 3 is connected to the upper surface of the frame 2, and the first end of the frame 2 is hinged to the first end of the core 1, and the frame 2 is clamped with the core 1 through the second end to realize the locking and fixing of the watch buckle.

[0034] The fine-tuning system includes a level pin 4, a telescopic locking tooth piece 5 and an assembly groove 6, and the assembly groove 6 is located on the side of the upper surface of the frame 2; the assembly groove 6 includes a rectangular groove portion 61 and a plurality of tooth groove portions 62 arranged in parallel along the length direction of the frame 2, and the telescopic locking tooth piece 5 is assembled on the inner side of the cover 3 through the level pin 4, and when the core 1 and the frame 2 are clamped, the telescopic locking tooth piece 5 partially extends into the assembly groove 6 and is embedded in the tooth groove portion 62 in the assembly groove 6 (see Figure 4 ) to realize the assembly connection between the cover 3 and the frame 2.

[0035] One end of the level pin 4 is connected to the telescopic locking tooth piece 5, and the other end extends out of the side of the face cover 3 for the user to press. When the level pin 4 is pressed by the user toward the side close to the face cover 3, the telescopic locking tooth piece 5 is pushed to slide in the assembly groove 6 along the width direction of the frame 2, thereby disengaging from the tooth groove portion 62 of the assembly groove 6. The level pin 4 can move along the length direction of the frame 2, and when the level pin 4 is pushed to move along the length direction of the frame 2, the telescopic locking tooth piece 5 and the face cover 3 are driven to move synchronously, until the telescopic locking tooth piece 5 is released to engage with the new tooth groove portion 62.

[0036] The above-mentioned watch clasp with the function of fine-tuning the face cover drives the telescopic locking tooth 5 to disengage from the tooth groove portion 62 and move along the length direction of the frame 2 to engage with the new tooth groove portion 62, thereby adjusting the relative position of the face cover 3 and the frame 2. At this time, the core 1 and the frame 2 still remain engaged, and the watch clasp can be fine-tuned without disassembly, thereby realizing the adjustment of the size of the watch and improving the convenience of using the watch clasp.

[0037] In one embodiment of the utility model, the telescopic locking tooth member 5 includes an integrally connected connecting column 51 and a clamping block 52, and a first connecting hole 311 connected to the level pin 4 is provided on one side end surface where the connecting column 51 is connected to the clamping block 52; the clamping block 52 is connected to the lower surface of the connecting column 51, and protrudes from one end of the connecting column 51 close to the level pin 4 in parallel with the width direction of the frame 2, and when the cover 3 is assembled to the frame 2, the clamping block 52 is embedded in the assembly groove 6 to achieve the connection between the cover 3 and the frame 2. The clamping block 52 and the connecting column 51 can be integrally formed or welded together.

[0038] Specifically, the size of the rectangular groove 61 in the width direction of the frame 2 is larger than the size of the clamping block 52 in the width direction of the frame 2, so that the clamping block 52 can move in the rectangular groove 61 along the width direction of the frame 2. The tooth groove 62 includes a plurality of protrusions 621 and grooves 622 arranged in parallel and spaced apart along the length direction of the frame 2 (see Figure 2), the opening of the groove 622 faces the side away from the edge of the frame 2, that is, toward the inside of the frame 2, the telescopic locking tooth member 5 is located on the inside of the frame 2 facing the opening of the groove 622, and each groove 622 is adapted to the shape of the free end of the snap-in block 52, thereby realizing the engagement of the snap-in block 52 with the groove 622, and the telescopic locking tooth member 5 moves along the length direction of the frame 2 with the level needle 4, and can be embedded with the grooves 622 at different positions, thereby realizing the connection and fixation of the face cover 3 and the frame 2 at different positions, thereby fine-tuning the wearing length of the watch.

[0039] In one embodiment of the present invention, the watch buckle comprises two level pins 4, two assembly grooves 6 and two telescopic lock teeth 5, and the two assembly grooves 6 are located on both sides of the length direction of the frame 2 (see Figure 3 ), two telescopic locking teeth 5 are respectively assembled on the inner side of the face cover 3 through two step pins 4, and the two telescopic locking teeth 5 and the two step pins 4 are arranged in parallel along the width direction of the frame 2. When the core 1 and the frame 2 are clamped, the clamping blocks 52 of the two telescopic locking teeth 5 are just located in the two assembly grooves 6, and when the two step pins 4 are pressed, the two telescopic locking teeth 5 are squeezed and moved in the direction of approaching each other until they are separated from the tooth groove part 62, and when the step pins 4 move along the length direction of the frame 2, the telescopic locking teeth 5 are driven to move in the assembly groove 6, and are embedded with the tooth groove parts 62 at different positions to achieve fine adjustment of the buckle; by setting two assembly grooves 6, two step pins 4 and two telescopic locking teeth 5, the tightness and stability of the clamping of the face cover 3 and the frame 2 can be improved, and the two step pins 4 are symmetrically arranged on both sides of the face cover 3, which is convenient for pressing and exerting force at the same time, thereby improving the convenience of using the fine adjustment system.

[0040] In one embodiment of the present invention, the cover 3 includes two ears 31 facing one side of the frame 2 (see Figure 4 ), two ears 31 are vertically connected to the two ends of the width direction of the lower surface of the cover 3, and the two ears 31 are arranged in parallel; the fine-tuning system also includes a spring pin 7, and the ear 31 is provided with a first connecting hole 311 for the level pin 4 to pass through; the connecting column 51 of each telescopic locking tooth member 5 is also provided with a second connecting hole 511 adapted to the spring pin 7, and the spring pin 7 is installed between the two telescopic locking tooth members 5 in a manner that the two ends are respectively inserted into the second connecting holes 511 of the two connecting columns 51; the two telescopic locking tooth members 5 are connected by the spring pin 7, and the two telescopic locking tooth members 5 are assembled on the cover 3 by the level pin 4 passing through the first connecting hole 311 of the ear 31 at one end away from the spring pin 7, so as to realize the assembly of the fine-tuning system and the cover 3, and the two ends of the spring pin 7 are elastic, so that the telescopic locking tooth member 5 can be driven to move when the level pin 4 is pressed, so as to realize the separation of the telescopic locking tooth member 5 from the tooth groove portion 62 and automatically rebound to the new tooth groove portion 62, thereby improving the convenience of the fine-tuning system operation.

[0041] In one embodiment of the present invention, the frame 2 further includes two adjusting fixtures 8, which are respectively fixedly connected to both sides of the frame 2 in the width direction (see Figure 4 ), and the outer edge of each adjusting fixture 8 is flush with the outer edge of the frame 2; the adjusting fixture 8 is provided with a sliding groove 81 for the level pin 4 to pass through, and the sliding groove 81 is arranged along the length direction of the frame 2, and the level pin 4 drives the face cover 3 and the telescopic lock tooth member 5 to move synchronously along the length direction of the frame 2 by moving in the sliding groove 81. Specifically, the adjusting fixture 8 is fixedly connected to both sides of the upper surface of the frame 2 by screws. The setting of the sliding groove 81 can not only realize the connection between the level pin 4 and the frame 2, thereby realizing the fine-tuning system and the face cover 3 being assembled on the frame 2, but also the shape and length setting of the sliding groove 81 can limit the sliding direction and distance of the level pin 4 on the frame 2, thereby realizing the close connection and stable adjustment between the face cover 3 and the frame 2; the adjusting fixture 8 is provided with one end of the sliding groove 81 pressing the cover above the assembly groove 6, and the assembly groove 6 is covered, and the clamping block 52 of the telescopic lock tooth member 5 is limited in the vertical direction, so as to improve the adjustment stability of the telescopic lock tooth member 5.

[0042] In one embodiment of the present invention, the frame 2 further includes two telescopic hooks 9 and a first clearance groove 21 for accommodating the telescopic hooks 9 (see Figure 1 ), two telescopic hooks 9 are arranged in parallel and staggered along the width direction of the frame 2, and the first clearance groove 21 is arranged along the width direction of the frame 2 and is connected with the two side edges of the frame 2; a mushroom head 11 is provided on the upper surface of the core 1, and a first through hole 211 is provided at the bottom of the first clearance groove 21 for the mushroom head 11 to pass through.

[0043] Specifically, each telescopic hook 9 is provided with a second clearance groove 91 (see Figure 1 ), the two telescopic hooks 9 are centrally symmetrically distributed with the center of the first through hole 211 as the center, and the groove walls of the two second clearance grooves 91 are enclosed to form an accommodation space for the mushroom head 11 to be retracted and assembled in the first clearance groove 21 (see Figure 3 ), a barb 911 engaged with the mushroom head 11 is also provided in the second clearance groove 91, and the barb 911 is located on the side of the second clearance groove 91 close to the end of the telescopic hook 9. The mushroom head 11 passes through the first through hole 211 into the accommodating space formed by the second clearance groove 91 and is engaged with the barb 911, thereby realizing the connection between the core 1 and the frame 2.

[0044] Furthermore, a spring 94 is connected between the two telescopic hooks 9 and the frame 2. When the telescopic hooks 9 are pressed, the two telescopic hooks 9 increase the accommodating space in the direction of approaching each other, and the spring 94 compresses and stores elastic potential energy until the barb 911 is separated from the mushroom head 11, thereby realizing the disassembly of the core 1 and the frame 2. After the disassembly is completed, the spring 94 releases the potential energy to restore the telescopic hook 9 to its original position, thereby realizing automatic resetting of the telescopic hook 9; and when the mushroom head 11 is engaged with the barb 911, under the action of the spring 94, the two telescopic hooks 9 are respectively pressed against the two sides of the mushroom head 11 in the direction of moving away from each other, thereby realizing a tight connection between the telescopic hook 9 and the mushroom head 11, thereby improving the connection stability between the core 1 and the frame 2.

[0045] In one embodiment of the present invention, the ends of the telescopic hooks 9 which are away from each other are further provided with a step 92 (see Figure 1 ), the clasp also includes a button 93 (see Figure 5 ), the pressing system 93 is provided with a connecting groove 931 adapted to the first-level step 92, and the two ends of the telescopic hook 9 that are far away from each other respectively protrude from the edges of the adjusting fixture 8, and extend into the connecting groove 931 through the first-level step 92 to be assembled with the pressing system 93. Specifically, the cross-sectional area of ​​the pressing system 93 is larger than the cross-sectional area of ​​the first-level step 92, thereby increasing the force area when the user presses the telescopic hook 9, thereby improving the convenience of pressing the telescopic hook 9, and further improving the convenience of disassembling the core 1 and the frame 2.

[0046] In one embodiment of the present invention, the frame 2 further includes a second through hole 22 on the same side as the first clearance groove 21 (see Figure 1 ), the clasp also includes a pressure plate 23 (see Figure 4 ), the pressing plate 23 is connected to the upper surface of the frame 2 and is pressed on the end of the adjusting fixture 8 connected with the telescopic hook 9. At the same time, the pressing plate 23 is also pressed on the connecting column 51 of the telescopic locking tooth part 5 to fix the telescopic locking tooth part 5 to the frame 2. The telescopic hook 9 is pressed and fixed between the pressing plate 23 and the adjusting fixture 8 in the vertical direction, thereby realizing the assembly of the telescopic hook 9 on the frame 2; the pressing plate 23 is provided with a third through hole 231, and the adjusting fixture 8 is provided with a fourth through hole 82. The fine-tuning system passes through the adjusting fixture 8 and the pressing plate 23 in sequence through the fasteners and is locked and fixed to the frame 2, thereby realizing the assembly connection of the fine-tuning system and the surface cover 3 with the frame 2.

[0047] In one embodiment of the present invention, the head of the core 1 is hinged with a screw rod 12 for connecting the watch strap (see Figure 6 ), the lower surface of the cover 3 is vertically connected with a mushroom nail head 32 for connecting another watch strap (see Figure 5 ), the two straps can be assembled at the end of the core 1 and the bottom of the cover 3 through the screw rod 12 and the mushroom nail head 32 respectively to achieve the connection of the watch.

[0048] The embodiment of the utility model further provides a watch, which comprises the above-mentioned double-press driven face cover fine-adjusting watch buckle.

[0049] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A watch buckle with a cover fine-tuning function, characterized in that: It includes a core, a frame, a cover and a fine-tuning system, and the clasp with the cover fine-tuning function is connected to the watchband through the core and the cover; the cover is connected to the upper surface of the frame, and the first end of the frame is hinged to the first end of the core; The fine-tuning system includes a level pin, a telescopic locking tooth piece and an assembly groove, and the assembly groove is located on the upper surface of the frame; the assembly groove includes a rectangular groove portion and a plurality of tooth groove portions arranged along the length direction of the frame, the telescopic locking tooth piece is assembled on the inner side of the face cover through the level pin, and the face cover is assembled to the frame in a manner that the telescopic locking tooth piece is partially embedded in the assembly groove; One end of the level pin is connected to the telescopic locking tooth piece, and the other end extends out of the side edge of the face cover. When the level pin is pressed toward the side edge of the face cover, the telescopic locking tooth piece is pushed to slide in the assembly groove along the width direction of the frame and disengage from the tooth groove portion of the assembly groove. When the level pin is pushed to move along the length direction of the frame, the telescopic locking tooth piece and the face cover are driven to move synchronously until the telescopic locking tooth piece is released to engage with a new tooth groove portion.

2. The watch buckle with cover fine-adjustment function according to claim 1, characterized in that: The telescopic locking tooth member comprises a connecting column and a clamping block, wherein the connecting column is provided with a first connecting hole connected to the level pin; the clamping block is connected to the lower surface of the connecting column and protrudes along the width direction of the frame at one end of the connecting column close to the level pin, and when the face cover is assembled to the frame, the clamping block is embedded in the assembly groove; The dimension of the rectangular groove in the direction of the width of the frame is greater than the dimension of the snap-in block in the direction of the width of the frame; the tooth groove portion includes a plurality of protrusions and grooves arranged at intervals along the length direction of the frame, the groove openings face away from the edge of the frame, and each of the grooves is adapted to the shape of the free end of the snap-in block.

3. The watch buckle with cover fine-adjustment function according to claim 1, characterized in that: The clasp includes two step pins, two assembly grooves and two telescopic locking teeth. The two telescopic locking teeth are respectively assembled on the inner side of the face cover through the two step pins. The two telescopic locking teeth and the two step pins are arranged along the width direction of the frame. When the two step pins are pressed, the two telescopic locking teeth move toward each other until they are separated from the tooth groove part.

4. The watch buckle with cover fine-adjustment function according to claim 3, characterized in that: The face cover includes two ears, and the fine-tuning system also includes a spring pin; The two ears are connected to the side of the cover facing the frame and are located at two ends of the width direction of the cover, and the ears are provided with a first connection hole for the level pin to pass through; The connecting column of each telescopic locking tooth piece is also provided with a second connecting hole adapted to the spring pin, and the spring pin is installed between the two telescopic locking tooth pieces in a manner that the two ends of the spring pin are respectively inserted into the second connecting holes of the two connecting columns; the level pin is assembled on the face cover through the first connecting hole on the ear.

5. The watch buckle with cover fine-adjustment function according to claim 3, characterized in that: The frame also includes two adjusting firmwares, which are respectively fixed on both sides of the width direction of the frame; the adjusting firmware is provided with a sliding groove for the level pin to pass through, the sliding groove is arranged along the length direction of the frame, and the level pin drives the surface cover and the telescopic locking tooth part to move synchronously along the length direction of the frame by moving in the sliding groove.

6. The watch buckle with cover fine-adjustment function according to claim 5, characterized in that: The frame also includes two telescopic hooks and a first clearance groove for accommodating the telescopic hooks, wherein the first clearance groove is arranged along the width direction of the frame and communicates with the two side edges of the frame; a mushroom head is arranged on the upper surface of the core, and a first through hole is arranged at the bottom of the first clearance groove for the mushroom head to pass through; Each of the telescopic hooks is provided with a second clearance groove, and the two telescopic hooks are centrally symmetrically distributed with the center of the first through hole as the center, and the groove walls of the two second clearance grooves are enclosed to form a accommodating space for the mushroom head to be extended and retracted, and are assembled in the first clearance groove; the second clearance groove is also provided with a barb that is engaged with the mushroom head, and the barb is located on the side of the second clearance groove close to the end of the telescopic hook, and the mushroom head passes through the first through hole into the accommodating space formed by the second clearance groove and is engaged with the barb.

7. The watch buckle with cover fine-adjustment function according to claim 6, characterized in that: The ends of the telescopic hooks that are away from each other are also provided with a step, and the clasp also includes a button, which is provided with a connecting groove that is compatible with the first step. One end of the telescopic hook protrudes from the edge of the adjustment firmware and is engaged with the button, and the cross-sectional area of ​​the button is larger than the cross-sectional area of ​​the first step.

8. The watch buckle with cover fine-adjustment function according to claim 6, characterized in that: The frame also includes a second through hole on the same side as the first clearance groove, and the clasp also includes a pressure plate, which is pressed onto one end of the adjusting fixture connected to the telescopic hook, the pressure plate is provided with a third through hole, and the adjusting fixture is provided with a fourth through hole. The fine-tuning system is locked and fixed to the frame through fasteners that pass through the adjusting fixture and the pressure plate in sequence.

9. The watch buckle with cover fine-adjustment function according to claim 1, characterized in that: The core-making head is hinged with a screw rod for connecting a watch strap, and the lower surface of the face cover is vertically connected with a mushroom nail head for connecting another watch strap.

10. A watch, characterized in that: It comprises a watch case, a watch strap and the watch buckle according to any one of claims 1 to 9, wherein the watch strap is connected to two sides of the watch case and is buckled with each other through the watch buckle.

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