Novel butterfly watch buckle and watch
By setting metal shrapnel, slope surface and pressing rod on the frame and core of the butterfly buckle, the problem of insufficient friction times for the existing butterfly buckle is solved, and higher opening and closing times and longer use is achieved life.
Patent Information
- Application Number
- CN202323659316.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The existing butterfly buckles have fewer frictions, especially high-end products, which have fewer frictions, resulting in inconvenience in wearing the watch.
A new type of butterfly buckle is designed. By setting metal shrapnel and slope surface on the frame and setting a press rod on the core, the metal shrapnel pushes the press rod under the support of the slope surface to help the core open or close. Reduce friction between frame and core.
It greatly improves the upper limit of the buckle opening and closing times, extends the service life of the metal shrapnel, and improves the convenience of wearing the watch.
Smart Images
Figure CN222510229U_ABST
Abstract
Description
Technical Field
[0001] The utility model embodiment relates to the technical field of watches, and more specifically, to a novel butterfly watch buckle and a watch. Background Art
[0002] The butterfly clasp currently used in the watch industry is usually composed of a frame and a core connected by a rotating shaft. When the watch needs to be taken off, the core is driven to flip and detach from the frame, so that the overall length of the strap is increased, so that the watch can be removed from the wrist.
[0003] However, the above-mentioned structures are all frame-making direct friction structures. Even if the frame and core are all made of stainless steel, the standard opening and closing friction times can only reach about 3000 times. For high-end products made of materials such as Ti2, Ti5 and 18k gold, the standard opening and closing friction times are even less. Utility Model Content
[0004] The embodiment of the utility model aims to solve the problem that the standard number of frictions for opening and closing of the existing butterfly clasp is relatively small, and provides a novel butterfly clasp and a watch.
[0005] The technical solution of the embodiment of the utility model to solve the above technical problems is to provide a new butterfly watch buckle, including:
[0006] The frame comprises two parallel strip side panels and a connecting portion connected between the two strip side panels, two ends of the two strip side panels protrude from two ends of the connecting portion and form two first assembly notches, and two ends of the connecting portion are respectively formed with downwardly inclined slope surfaces;
[0007] The metal spring is assembled on the connecting portion in a manner that both ends of the metal spring are respectively embedded in the first assembly notch;
[0008] Two cores are pivotally connected to the two ends of the frame through a pin located above the metal spring sheet. Each core has a pressure rod located outside the pin. When the core rotates around the pin from a snap-fit state to a fully open state, the pressure rod gradually presses the metal spring sheet down to the slope surface. After the metal spring sheet reaches the maximum downward stroke, the metal spring sheet pushes the pressure rod through the elastic restoring force under the support of the slope surface to rotate the core to a fully open state.
[0009] As a further improvement of the present invention, the top of the strip side panel is higher than the top of the connecting part, and an assembly groove located between the two strip side panels is formed above the connecting part; the upper surface of the connecting part has a boss, the metal spring sheet has a fixing hole adapted to the boss, and the fixing hole has wings on both sides; the metal spring sheet is fixed to the upper surface of the connecting part in a manner that the boss is inserted into the fixing hole and the two wings are respectively abutted against the two side walls of the assembly groove.
[0010] As a further improvement of the utility model, the depth of the assembly groove is greater than the thickness of the metal spring sheet, and when the core is in a buckled state, the bottom of the core is attached to the upper surface of the metal spring sheet, and the two outer side walls of the core are attached to the two side walls of the assembly groove respectively;
[0011] The novel butterfly watch clasp includes a plurality of spring wave pins, which are respectively fixed on the strip side panels, and the elastic heads of the spring wave pins protrude from the side walls of the assembly grooves; the two outer side walls of each of the cores respectively have a first countersunk hole adapted to the elastic head, and when the core is buckled onto the frame, the elastic head of the spring wave pin is embedded in the first countersunk hole.
[0012] As a further improvement of the present invention, the bottom of the assembly groove has an embedding groove corresponding to the position of the spring wave pin, the head end of the core has a protrusion, the first countersunk hole is located on the protrusion, and when the core is buckled into the frame, the protrusion is embedded in the embedding groove, and the top surface of the core is flush with the top surface of the frame.
[0013] As a further improvement of the utility model, each of the pressure rods includes a grade pin and a steel tube rotatably connected to the grade pin, the two ends of the grade pin are respectively exposed outside the steel tube, and the grade pin is assembled to the core making through the parts exposed outside the steel tube at both ends.
[0014] As a further improvement of the present invention, the tail end of each of the core making parts has two parallel ear plates and a second assembly notch is formed between the two ear plates, the width of the second assembly notch is not less than the width of the tail end of the metal spring sheet, and when the core making part is in a fully open state, the end of the metal spring sheet is embedded in the second assembly notch.
[0015] As a further improvement of the utility model, the ear plates on both sides of the second assembly notch are respectively provided with a second pin hole, a pressure rod mounting hole and a second countersunk hole, and the second pin hole is located on the inner side of the pressure rod mounting hole, the second pin hole and the pressure rod mounting hole respectively pass through the ear plates in which they are located, and the second countersunk hole is located on the lower surface of the ear plate and is adjacent to the pressure rod mounting hole; the pin shaft passes through the two second pin holes to assemble the core to the end of the frame;
[0016] The portion of the level pin exposed outside the steel passage has a circumferential annular groove, and the level pin is assembled to the ear plate in such a way that the annular groove is embedded in the pressure rod mounting hole and is locked in the pressure rod mounting hole by the core material squeezed into the annular groove through the second countersunk hole.
[0017] As a further improvement of the utility model, a receiving groove is formed under each of the cores, and the width of the receiving groove is greater than the width of the corresponding part of the metal spring sheet, and when the core is buckled into the frame, the corresponding part of the metal spring sheet is embedded in the receiving groove.
[0018] As a further improvement of the present invention, the two ends of the metal spring sheet respectively have an upturned portion, and a pressing groove is formed between the upturned portion and the main body of the metal spring sheet, and the pressing groove protrudes out of the end of the frame; the pressing rod on the core is embedded in the pressing groove when the core is buckled into the frame.
[0019] The utility model also provides a watch, comprising a watch case, a watch strap and the novel butterfly watch buckle as described above.
[0020] The utility model has the following beneficial effects: by arranging a metal spring sheet and a slope surface on the frame and a pressure rod on the core, the metal spring sheet can push the pressure rod under the support of the slope surface to help the core to open or close, and in this process, the frame and the core no longer generate friction with the spring sheet, which greatly improves the upper limit of the opening and closing times of the clasp. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the exploded structure of the new butterfly watch buckle provided by the embodiment of the utility model;
[0022] Figure 2 It is a structural schematic diagram of a frame in a novel butterfly watch buckle provided by an embodiment of the utility model;
[0023] Figure 3 It is a structural schematic diagram of a metal spring in a new butterfly watch buckle provided by an embodiment of the utility model;
[0024] Figure 4 It is a structural schematic diagram of a new type of butterfly watch buckle middle pressure rod provided by an embodiment of the utility model;
[0025] Figure 5 It is a structural schematic diagram of the core in the new butterfly watch buckle provided by the embodiment of the utility model;
[0026] Figure 6 It is a structural schematic diagram of a new butterfly watch buckle provided by an embodiment of the utility model, in which the core is in a buckled state;
[0027] Figure 7 It is a side structural schematic diagram of a core in a new butterfly watch buckle provided by an embodiment of the utility model in a buckled state;
[0028] Figure 8 It is a structural schematic diagram of a new butterfly watch buckle provided by an embodiment of the utility model, in which the core is in a fully opened state;
[0029] Fig. 9 It is a side structural schematic diagram of a new butterfly watch buckle provided by an embodiment of the utility model, in which the core is in a fully opened state. DETAILED DESCRIPTION
[0030] 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.
[0031] like Figure 1 , which is a schematic diagram of the structure of a novel butterfly watch clasp provided by an embodiment of the utility model, and the novel butterfly watch clasp can be applied to a watch, and realizes the wearing function of the watch by locking the watchband. The novel butterfly watch clasp of this embodiment includes a frame 10, a core 20 and a metal spring 30, and the frame 10, the core 20 and the metal spring 30 are made of materials such as stainless steel, Ti2, Ti5 and 18k gold.
[0032] Combination Figure 2 As shown, the frame 10 includes two strip side panels 11 and a connecting portion 12, wherein the two strip side panels are arranged in parallel (or substantially parallel), and the connecting portion 12 is connected between the two strip side panels 11, that is, the two strip side panels 11 are connected through the connecting portion 12. In addition, the two ends of the two strip side panels 11 protrude from the two ends of the connecting portion 12 and form two first assembly notches 14, so that the frame 10 is H-shaped as a whole. The two ends of the connecting portion 12 are respectively formed with a downwardly inclined slope surface 121, that is, the surface of the connecting portion 12 gradually descends from the inside to the edge. In particular, the strip side panels 11 and the connecting portion 12 can adopt an integrated structure. Of course, in practical applications, the two strip side panels 11 and the connecting portion 12 can also be fixed together using an assembly structure.
[0033] Combination Figure 3 As shown, the metal spring 30 is in the shape of a flat strip, and the metal spring 30 has a certain thickness to ensure that it can recover to its original shape through its own elasticity after being deformed by force. In this embodiment, the metal spring 30 is assembled to the connecting portion in a manner that both ends of the metal spring 30 are respectively embedded in the first assembly notch. It can be understood that in order to adapt to the shape of the wrist, the metal spring 30 can be in a slightly arc shape like the frame 10.
[0034] Combination Figure 5 As shown, two cores 20 are respectively pivoted at the two ends of the frame 10 through the pins 40, and the pins 40 are located above the metal springs 30, that is, each core 20 can be buckled onto the frame 10 by rotating around the pins 40, or can be rotated around the pins 40 to be separated from the frame 10, so that it can be used to change the wearing length of the watch to achieve the wearing of the watch. Specifically, the strip-shaped side panels 11 on both sides of the first assembly notch 14 on the frame 10 have first pin holes 111, and the core 20 has second pin holes 221. The core 20 is embedded in the first assembly notch 14 and the pins 40 pass through the first pin holes 111 and the second pin holes 221 to pivot the core 20 and the frame 10 together. The first pin holes 111 and the second pin holes 221 are preferably arranged along a length direction perpendicular to the frame 10 to ensure that the pins 40 are arranged along the width direction of the frame 10 when assembled to the first pin holes 111 and the second pin holes 221.
[0035] Each core 20 is equipped with a pressure rod 50, and the pressure rod 50 is parallel to the pin 40 and is located outside the pin 40 (that is, the pressure rod 50 is closer to the edge of the core 20). Figure 6 , Figure 7 As shown) rotates around the pin 40 to a fully open state (i.e., the angle between the core 20 and the frame 10 is close to 180°, as shown Figure 8 , Fig. 9 In the process of the metal spring 30 being opened and closed (as shown in FIG. 1 ), the pressing rod 50 gradually presses the metal spring 30 downward (in this process, the metal spring 30 abuts against the slope surface 121 and generates elastic deformation), and after the metal spring 30 reaches the maximum downward stroke (for example, the angle between the core 20 and the frame 10 is about 120° at this time), the metal spring 30, supported by the slope surface 121, pushes the pressing rod 50 through the elastic restoring force to rotate the core 20 to the fully open state. Similarly, in the process of the core 20 rotating from the fully open state to the buckled state around the pin 40, the pressing rod 50 gradually presses the metal spring 30 downward, and after the metal spring 30 reaches the maximum downward stroke (for example, the angle between the core 20 and the frame 10 is about 90° at this time), the metal spring 30, supported by the slope surface 121, pushes the pressing rod 50 through the elastic restoring force to rotate the core 20 to buckle to the frame 10. When the core 20 is buckled onto the frame 10 (i.e., the core 20 is in a buckled state), the metal spring sheet 30 maintains the core 20 in a buckled state through elastic force under the support of the slope surface 121; when the core 20 is in a fully open state, the metal spring sheet 30 maintains the core 20 in a fully open state through elastic force under the support of the slope surface 121.
[0036] The above-mentioned novel butterfly watch buckle, by arranging the metal spring piece 30 and the slope surface 121 on the frame 10 and arranging the pressure rod 50 on the core 20, enables the metal spring piece 30 to interact with the pressure rod under the support of the slope surface 121, so that the core 20 automatically springs open to a fully open state after opening to a certain angle or automatically rotates to a buckled or nearly buckled position after rotating to a certain angle. In this process, only the pressure rod 50 rubs against the metal spring piece 30, and the entire frame 10 and the core 20 no longer rub against the metal spring piece 30, which greatly increases the upper limit of the number of opening and closing times of the watch buckle. At the same time, the slope surface 121 can reduce the shear force of the frame 10 on the metal spring piece 30 when the metal spring piece 30 is subjected to the pressure of the pressure rod 50, so that the metal spring piece 30 changes from line contact with the frame 10 to surface contact when it is under pressure, thereby extending the service life of the metal spring piece 30.
[0037] like Figure 2 , Figure 3 As shown, in one embodiment of the utility model, the top of the strip side panel 11 is higher than the top of the connecting portion 12, and a mounting groove 15 is formed above the connecting portion 12 and located between the two strip side panels 11. The upper surface of the connecting portion 12 has a boss 13, specifically, the boss 13 can be located in the center of the length direction of the frame 10, and the top of the boss 13 is lower than the top of the strip side panel 11. The metal spring 30 has a fixing hole 32 adapted to the boss 13, and the two sides of the fixing hole 32 are respectively provided with fins 33 protruding from the two sides of the main body 31 of the metal spring 30, that is, the two fins 33 and the main body 31 of the metal spring 30 are in a cross shape. The metal spring 30 is fixed to the upper surface of the connecting portion 12 by inserting the protruding column 13 into the fixing hole 32 (so that the bottom of the metal spring 30 is attached to the upper surface of the connecting portion 12) and the two wing pieces 33 are respectively abutted against the two side walls of the assembly groove 15 (i.e., the inner side walls of the two strip-shaped side panels 11).
[0038] By means of the above method, the metal spring piece 30 can be stably fixed on the frame 10 to prevent the metal spring piece 30 from shaking or rotating during use.
[0039] To ensure that the core 20 is stably engaged, in one embodiment of the present invention, the depth of the above-mentioned assembly groove 15 is greater than the thickness of the metal spring 30, and when the core 20 is in the engaged state, the bottom of the core 20 is attached to the upper surface of the metal spring 30, and the two outer side walls of the core 20 are respectively attached to the two side walls of the assembly groove 15, that is, the core 20 is also embedded in the assembly groove 15 when in the engaged state.
[0040] Correspondingly, the novel butterfly watch clasp further includes four spring wave nails 60, which include an elastic member and an elastic head (usually composed of a steel ball) that abuts against the elastic member and protrudes under the action of the elastic member. The four spring wave nails 60 are respectively fixed on the strip side plates 11. Specifically, two spring wave nails 60 are fixed on each strip side plate 11, and the positions of the two spring wave nails 60 correspond to the positions where the two cores 20 are buckled to the frame 10. The elastic heads of the spring wave nails 60 protrude from the side walls of the assembly groove 15 (i.e., the inner side walls of the strip side plates 11 and located above the upper surface of the connecting portion 12). The two outer side walls of each core 20 respectively have first countersunk holes 251 that are compatible with the elastic heads of the spring wave nails 60, and when the core 20 is buckled to the frame 10, the elastic heads of the spring wave nails 60 are embedded in the first countersunk holes 251. In practical applications, the number of spring wave nails 60 can be adjusted as needed, and the structure of the spring wave nails 60 and the structure fixed to the strip side plate 11 can adopt conventional techniques in the art, which will not be described in detail here.
[0041] The structure of the spring wave pin 60 combined with the first countersunk hole 251 can significantly improve the firmness and stability of the core 20 being fastened to the frame 10, and reduce the swing caused by the matching clearance between the core 20 and the frame 10.
[0042] In one embodiment of the utility model, the bottom of the assembly groove 15 has an embedding groove 16 corresponding to the position of the spring wave pin 60, and accordingly, the head end of the core 20 (i.e., the end away from the pin 40) has a protrusion 25, which protrudes downward from the core 20, and the first countersunk hole 251 is located on the protrusion 25, and when the core 20 is buckled to the frame 10, the protrusion 25 is embedded in the embedding groove 16, and the top surface of the core 20 is flush with the top surface of the frame 10 (i.e., the top surface of the strip side plate 11). Similar to the existing butterfly watch buckle, above the protrusion 25, there is also a pin hole 261 for connecting the watch strap.
[0043] By embedding the protrusion 25 into the embedding groove 16, the stability of the core 20 being fastened to the frame 10 can be further improved, and the core 20 can be prevented from shaking after being fastened. At the same time, the top surface of the core 20 is flush with the top surface of the frame 10, so that the entire new butterfly watch buckle has a higher surface consistency after being fastened, thereby making it more beautiful.
[0044] In one embodiment of the utility model, a receiving groove 24 is formed under each core 20, and the width of the receiving groove 24 is greater than the width of the corresponding part of the metal spring 30. When the core 20 is buckled to the frame 10, the corresponding part of the metal spring 30 is embedded in the receiving groove 24. In this way, the structural strength of the core 20 can be ensured while making the structure of the entire new butterfly watch buckle more compact.
[0045] Combination Figure 4As shown, in one embodiment of the utility model, each of the above-mentioned pressure rods 50 includes a level needle 51 and a cylindrical steel tube 52 rotatably connected to the level needle 51. To ensure smooth rotation between the level needle 51 and the steel tube 52, lubricating oil may be provided between the steel tube 52 and the level needle. The two ends of the level needle 51 are respectively exposed outside the two ends of the steel tube 52, and the level needle 51 is assembled to the core making 20 through the parts of the two ends exposed outside the steel tube 52.
[0046] When the pressure rod 50 applies pressure to the metal spring piece 30, since the steel through hole 52 can rotate relative to the level needle 51, there is only rolling friction but no sliding friction between the pressure rod 50 and the metal spring piece 30, which greatly reduces the wear of the steel through hole 52 and the metal spring piece 30, improves the service life of the new butterfly clasp, and also avoids the noise caused by sliding.
[0047] like Figure 5 As shown, in one embodiment of the utility model, the tail end of each core 20 has two parallel ear plates 22, and a second assembly notch 23 is formed between the two ear plates 22. The width of the second assembly notch 23 is not less than the width of the tail end of the metal spring 30, and when the core 20 is in a fully open state, the end of the metal spring 30 is embedded in the second assembly notch 23. This structure can prevent the core 20 from interfering with the metal spring 30 during the rotation process around the pin 40.
[0048] In particular, the lug plates 22 on both sides of the second assembly notch 23 further include a pressure rod mounting hole 222 and a second countersunk hole 223, wherein the pressure rod mounting hole 222 is located outside the second pin hole 221 (i.e., closer to the edge of the lug plate 22). The pressure rod mounting hole 222 transversely penetrates the lug plate 22, and the second countersunk hole 223 is located on the lower surface of the lug plate 22 and adjacent to the pressure rod mounting hole 222. Accordingly, Figure 4 As shown, the portion of the level pin 51 exposed outside the steel passage 52 has a circumferential annular groove 53, and the level pin 51 is assembled to the ear plate 22 in such a way that the annular groove 53 is embedded in the pressure rod mounting hole 222 and is locked in the pressure rod mounting hole 222 by the core material squeezed into the annular groove 53 through the second countersunk hole 223.
[0049] Compared with the common level pin structure, the above structure can prevent the two ends of the pressure rod 50 from being deformed and falling out of the pressure rod mounting hole 222 under the pressure of the metal spring sheet 30 , thereby improving the stability of the pressure rod 50 .
[0050] Combination Figure 3As shown, in one embodiment of the present invention, the two ends of the metal spring 30 have upturned portions 34 respectively, and a pressing groove 35 is formed between the upturned portion 34 and the main body 31 of the metal spring, and the pressing groove 35 protrudes out of the end of the frame 10; the pressing rod 50 on the core 20 is embedded in the pressing groove 35 when the core 20 is buckled to the frame 10. Through the above structure, the edge of the new butterfly watch buckle can be made more rounded, and at the same time, the deformation of the metal spring 30 is small when the core 20 is buckled.
[0051] The utility model also provides a watch, comprising a watch case, a watch strap and the novel butterfly watch buckle as described above.
[0052] The above is only a preferred specific implementation 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 by 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 new type of butterfly clasp, characterized in that: include: The frame comprises two parallel strip side panels and a connecting portion connected between the two strip side panels, two ends of the two strip side panels protrude from two ends of the connecting portion and form two first assembly notches, and two ends of the connecting portion are respectively formed with downwardly inclined slope surfaces; The metal spring is assembled on the connecting portion in a manner that both ends of the metal spring are respectively embedded in the first assembly notch; Two cores are pivotally connected to the two ends of the frame through a pin located above the metal spring sheet. Each core has a pressure rod located outside the pin. When the core rotates around the pin from a snap-fit state to a fully open state, the pressure rod gradually presses the metal spring sheet down to the slope surface. After the metal spring sheet reaches the maximum downward stroke, the metal spring sheet pushes the pressure rod through the elastic restoring force under the support of the slope surface to rotate the core to a fully open state.
2. The novel butterfly clasp according to claim 1 is characterized in that: The top of the strip side panel is higher than the top of the connecting part, and an assembly groove is formed above the connecting part and located between the two strip side panels; the upper surface of the connecting part has a boss, the metal spring sheet has a fixing hole adapted to the boss, and the fixing hole has wings on both sides; the metal spring sheet is fixed to the upper surface of the connecting part in a manner that the boss is inserted into the fixing hole and the two wings are respectively abutted against the two side walls of the assembly groove.
3. The novel butterfly clasp according to claim 2 is characterized in that: The depth of the assembly groove is greater than the thickness of the metal spring sheet, and when the core is in a buckled state, the bottom of the core is attached to the upper surface of the metal spring sheet, and the two outer side walls of the core are attached to the two side walls of the assembly groove respectively; The novel butterfly watch clasp includes a plurality of spring wave pins, which are respectively fixed on the strip side panels, and the elastic heads of the spring wave pins protrude from the side walls of the assembly grooves; the two outer side walls of each of the cores respectively have a first countersunk hole adapted to the elastic head, and when the core is buckled onto the frame, the elastic head of the spring wave pin is embedded in the first countersunk hole.
4. The novel butterfly clasp according to claim 3 is characterized in that: The bottom of the assembly groove has an embedding groove corresponding to the position of the spring wave pin, the head end of the core has a protrusion, the first countersunk hole is located on the protrusion, and when the core is buckled into the frame, the protrusion is embedded in the embedding groove, and the top surface of the core is flush with the top surface of the frame.
5. The novel butterfly clasp according to claim 1 is characterized in that: Each of the pressure rods comprises a level pin and a steel tube rotatably connected to the level pin, the two ends of the level pin are respectively exposed outside the steel tube, and the level pin is assembled to the core making through the parts of the two ends exposed outside the steel tube.
6. The novel butterfly clasp according to claim 5 is characterized in that: The tail end of each core has two parallel ear plates and a second assembly gap is formed between the two ear plates. The width of the second assembly gap is not less than the width of the tail end of the metal spring sheet, and when the core is in a fully open state, the end of the metal spring sheet is embedded in the second assembly gap.
7. The novel butterfly clasp according to claim 6, characterized in that: The ear plates on both sides of the second assembly notch are respectively provided with a second pin hole, a pressure rod mounting hole and a second countersunk hole, and the second pin hole is located on the inner side of the pressure rod mounting hole, the second pin hole and the pressure rod mounting hole respectively pass through the ear plates in which they are located, and the second countersunk hole is located on the lower surface of the ear plate and is adjacent to the pressure rod mounting hole; the pin shaft passes through the two second pin holes to assemble the core to the end of the frame; The portion of the level pin exposed outside the steel passage has a circumferential annular groove, and the level pin is assembled to the ear plate in such a way that the annular groove is embedded in the pressure rod mounting hole and is locked in the pressure rod mounting hole by the core material squeezed into the annular groove through the second countersunk hole.
8. The novel butterfly clasp according to claim 1 is characterized in that: A receiving groove is formed below each of the cores, and the width of the receiving groove is greater than the width of the corresponding part of the metal spring sheet. When the core is buckled onto the frame, the corresponding part of the metal spring sheet is embedded in the receiving groove.
9. The novel butterfly watch buckle according to any one of claims 1 to 8, characterized in that: The two ends of the metal spring sheet respectively have an upturned portion, and a pressing groove is formed between the upturned portion and the main body of the metal spring sheet, and the pressing groove protrudes out of the end of the frame; the pressing rod on the core is embedded in the pressing groove when the core is buckled onto the frame.
10. A watch, characterized in that: The invention comprises a watch case, a watch strap and a novel butterfly watch buckle as claimed in any one of claims 1 to 9.