Watchband butterfly clasp structure

Abstract

The utility model relates to a kind of watchband butterfly buckle structure, comprising: first buckle body component, including base, first folding arm, boss, guide plate, sliding member and locking block;Boss is provided with clamping block;Guide plate is provided with positioning pin;The middle part of sliding member is equipped with positioning slot, and positioning slot is used to cooperate with positioning pin to form end point positioning structure;And the second buckle body component matched with first buckle body component;Second buckle body component includes annular cover plate, second folding arm and elastic clasp;Annular cover plate is used to cover boss;Elastic clasp and clamping block abutment form clamping cooperation;Locking block is embedded in the inner wall of annular cover plate, and forms secondary locking.The above-mentioned watchband butterfly buckle structure, simple structure, convenient to use, preliminary buckle is formed by elastic clasp and clamping block, and secondary locking is realized by matching locking block and locking recess, double protection against decoupling;The positioning slot of sliding member cooperates with positioning pin to fix position, avoid locking force to drop, significantly improve use stability and user experience.

Description

Technical Field

[0001] This utility model relates to the field of watch strap butterfly buckle technology, and in particular to a watch strap butterfly buckle structure. Background Technology

[0002] As a core connector in watch straps, the butterfly clasp is widely used in both metal and leather watch straps due to its advantages such as comfortable wear and reduced damage from bending. Current butterfly clasps typically consist of a clasp body, a folding arm, and a locking mechanism. The folding arm rotates in conjunction with the locking component to fasten and unlock the strap.

[0003] Most existing watch strap butterfly clasps use a single locking structure, resulting in concentrated stress points. Over time, this can lead to reduced locking force due to spring fatigue and wear on the locking surface. Some products rely solely on the mechanical engagement of a folding arm for fixation, lacking secondary locking protection. Under the influence of impacts, pulling, or other external forces during daily activities, the clasp is prone to accidental disengagement, negatively impacting the user experience. Utility Model Content

[0004] Based on this, the present invention provides a watch strap butterfly buckle structure, which is simple in structure and easy to use. The elastic hook and the buckle block form an initial buckle, and the locking block and locking recess achieve a secondary locking, providing double protection against buckle slippage. The positioning groove and positioning pin of the sliding part cooperate to fix the position, preventing the locking force from decreasing and significantly improving the stability of use and user experience.

[0005] To achieve the objectives of this utility model, the following technical solution is adopted: A butterfly clasp structure for watch straps, comprising: The first fastener assembly includes a base, a first folding arm fixedly connected to one side of the base, a boss extending from the side of the base away from the wrist, a guide plate fixedly connected to the end of the boss facing the base, a sliding member slidably connected to the guide plate, and locking blocks connected to opposite ends of the sliding member on the side away from the first folding arm. The sliding member is located inside the boss; a locking block protrudes from the middle of the side of the boss away from the first folding arm; a positioning pin protrudes from the side of the guide plate facing the sliding member; a positioning groove is provided in the middle of the sliding member, the positioning groove being used to cooperate with the positioning pin to form an end-point positioning structure; and A second fastener assembly is matched and connected to the first fastener assembly; the second fastener assembly includes an annular cover plate, a second folding arm hinged to one side of the annular cover plate, and an elastic hook installed on the inner wall of the annular cover plate; the annular cover plate is used to cover the boss; the elastic hook abuts against the locking block and forms a locking engagement after elastic deformation; the driving sliding member slides linearly along the guide plate inside the boss, and synchronously drives the locking block to pass through the boss and embed into the inner wall of the annular cover plate, forming a secondary lock.

[0006] The aforementioned butterfly clasp structure is simple and easy to use. It forms an initial clasp through the elastic hook and the locking block, and achieves a secondary lock with the locking block and locking recess, providing double protection against unhooking. The positioning groove and positioning pin of the sliding component work together to fix the position, preventing the locking force from decreasing and significantly improving the stability and user experience.

[0007] In one embodiment, the end of the second folding arm away from the annular cover plate is hinged to the end of the first folding arm away from the base.

[0008] In one embodiment, the boss has through holes on opposite sides of the locking block, and the through holes correspond one-to-one with the locking blocks.

[0009] In one embodiment, the inner wall of the annular cover plate is provided with locking recesses on opposite sides of the elastic hook, and the locking recesses correspond one-to-one with locking blocks, and the locking blocks are used to embed into the interior of the locking recesses.

[0010] In one embodiment, a slide rail portion protrudes from the side of the guide plate facing the sliding member, and a positioning pin protrudes from the middle of the guide plate corresponding to the slide rail portion.

[0011] In one embodiment, the sliding member has a groove on the side facing the guide plate, and the groove matches and connects with the slide rail; the positioning groove connects to the groove.

[0012] In one embodiment, the positioning groove is dumbbell-shaped, wider at both ends and narrower in the middle. The width of the middle section of the positioning groove is smaller than the diameter of the positioning pin, and the width of the opposite ends of the positioning groove is adapted to the diameter of the positioning pin.

[0013] In one embodiment, the boss has a through hole along its thickness direction, the through hole connecting the interior of the base from top to bottom, and the sliding member is located inside the through hole.

[0014] In one embodiment, the first buckle assembly further includes a decorative cover fixedly connected to the side of the sliding member facing away from the guide plate; the opening width of the central hole of the annular cover is greater than the width of the decorative cover. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the butterfly buckle structure of a watch strap according to one embodiment of the present utility model; Figure 2 for Figure 1 A three-dimensional schematic diagram of the butterfly clasp structure on the watch strap from another perspective; Figure 3 for Figure 1 The diagram shown is an exploded view of the butterfly clasp structure on the watch strap. Figure 4 for Figure 3 An exploded view of the butterfly clasp structure on the watch strap from another perspective; Figure 5 for Figure 1 The exploded comparison diagram of the first and second buckle components in the butterfly clasp structure of the watch strap is shown. Figure 6 for Figure 5 The exploded comparison diagram of the first and second buckle components in the butterfly clasp structure of the watch strap from another perspective; Figure 7 for Figure 1 A schematic diagram of the internal structure of the first buckle component in the butterfly clasp structure of the watch strap shown; Figure 8 for Figure 1 A schematic diagram of the internal structure of the second buckle component in the butterfly clasp structure of the watch strap shown; Figure 9 for Figure 1 The diagram shown is a three-dimensional representation of the butterfly clasp structure on the watch strap in the fastened state. Figure 10 for Figure 1 The cross-sectional view of the assembly of the first buckle component and the second buckle component in the butterfly buckle structure of the watch strap shown; Figure 11 This is a comparative schematic diagram of the base, boss, and locking block in a butterfly clasp structure of a watch strap according to another embodiment.

[0016] Attached image annotations: 10-First buckle assembly, 11-Base, 111-Through groove, 12-First folding arm, 13-Pressure plate, 14-Boss, 141-Through hole, 142-Clocking block, 143-Through hole, 15-Guide plate, 151-Slide rail, 152-Positioning pin, 16-Sliding component, 161-Slide groove, 162-Positioning groove, 17-Locking block, 18-Decorative cover; 20-Second buckle assembly, 21-Annular cover plate, 22-Second folding arm, 23-Elastic hook, 24-Locking recess; 30 - First watch strap; 40 - Second strap. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0018] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0020] Please see Figures 1 to 11 The butterfly clasp structure of the watch strap according to one embodiment of the present invention includes a first clasp assembly 10 and a second clasp assembly 20 that matches and connects to the first clasp assembly 10. The first clasp assembly 10 is used to connect to a first watch strap 30, and the second clasp assembly 20 is used to connect to a second watch strap 40. Through the coordinated cooperation of the first clasp assembly 10 and the second clasp assembly 20, a secure fastening and convenient unlocking of the watch strap can be achieved.

[0021] The first buckle assembly 10 includes a base 11, a first folding arm 12 fixedly connected to one side of the base 11, a pressure plate 13 rotatably mounted on the wrist-facing side of the base 11, a boss 14 protruding outward from the wrist-facing side of the base 11, a guide plate 15 fixedly connected to one end of the boss 14 facing the base 11, a sliding member 16 slidably connected to the guide plate 15, locking blocks 17 connected to opposite ends on the side of the sliding member 16 facing away from the first folding arm 12, and a decorative cover 18 fixedly connected to the side of the sliding member 16 facing away from the guide plate 15. The sliding member 16 is located inside the boss 14. Pushing the decorative cover 18 can simultaneously drive the sliding member 16 to slide linearly along the guide plate 15 inside the boss 14, thereby driving the locking block 17 to pass through the boss 14 and embed into the second buckle assembly 20, so as to realize the secondary locking between the first buckle assembly 10 and the second buckle assembly, effectively preventing accidental disengagement due to external force during daily use.

[0022] like Figures 5 to 7 As shown, the base 11 is hollow, and a through groove 111 is provided on the side of the base 11 facing away from the first folding arm 12. The through groove 111 is located between the base 11 and the pressure plate 13, so that the first watch strap 30 can be clamped between the base 11 and the pressure plate 13 after passing through the through groove 111. By using the pressure plate 13 and the watch strap 30 to press together, a stable connection between the base 11 and the first watch strap 30 can be achieved. At the same time, by adjusting the length of the first watch strap 30 passing through the through groove 111, it can flexibly adapt to different users' wrist sizes and achieve the effect of accurately adjusting the wearing length of the watch strap.

[0023] The boss 14 has a through hole 141 along its thickness direction, which connects to the interior of the base 11 from top to bottom. A locking block 142 protrudes from the center of the side of the boss 14 facing away from the first folding arm 12. Through holes 143 are provided on opposite sides of the boss 14 corresponding to the locking block 142, and each through hole 143 corresponds to a locking block 17. When the sliding member 16 drives the locking block 17 to extend out of the through hole 143, the locking block 17 can be inserted into the second buckle assembly 20, forming a locking engagement between the first buckle assembly 10 and the second buckle assembly 20.

[0024] In this embodiment, the locking block 142 is semi-cylindrical, and the locking block 142 and the boss 14 are integrally formed. It can be understood that in other embodiments, such as... Figure 11 As shown, the card block 142 can also adopt an independent cylindrical structure, which is rotatably connected to the side of the boss 14 facing away from the first folding arm 12 by a rotating shaft. As long as the same buckle positioning function as in this embodiment can be achieved, this utility model does not make specific limitations on the connection method or molding process of the card block 142 and the boss 14.

[0025] The guide plate 15 is fixedly mounted to the end of the through hole 141 near the wrist by screws. A slide rail portion 151 protrudes from the side of the guide plate 15 facing the sliding member 16, and a positioning pin 152 protrudes from the guide plate 15 corresponding to the middle of the slide rail portion 151. Both the slide rail portion 151 and the positioning pin 152 are located inside the through hole 141. The extension direction of the slide rail portion 151 is consistent with the length direction of the first watch strap 30.

[0026] The sliding member 16 is located within the through hole 141. A groove 161 is provided on the side of the sliding member 16 facing the guide plate 15. The groove 161 matches and engages with the slide rail 151 to achieve a sliding connection between the sliding member 16 and the guide plate 15, ensuring that the sliding member 16 can move smoothly in a straight line along the slide rail 151. A positioning groove 162 is provided in the middle of the sliding member 16, connecting to the groove 161. The positioning groove 162 is used to cooperate with the positioning pin 152 to form an end-point positioning structure. Specifically, the positioning groove 162 is approximately dumbbell-shaped, wider at both ends and narrower in the middle. The width of the middle section of the positioning groove 162 is smaller than the diameter of the positioning pin 152, while the widths of the opposite ends of the positioning groove 162 are adapted to the diameter of the positioning pin 152. When the sliding member 16 slides along the slide rail 151 to achieve position switching, the positioning pin 15 can pass through the middle section of the positioning groove 162 through interference fit, and then be embedded in either end of the positioning groove 162 to form a stable end position, thereby fixing the sliding member 16 in the locked or unlocked position and preventing it from sliding on its own.

[0027] In this embodiment, the length directions of the slide groove 161 and the positioning groove 162 are both consistent with the length direction of the slide rail 151 to ensure the coordination of sliding and positioning.

[0028] The second fastener assembly 20 includes an annular cover plate 21, a second folding arm 22 hinged to one side of the annular cover plate 21, and an elastic hook 23 mounted on the inner wall of the annular cover plate 21. The annular cover plate 21 covers the protrusion 14. The end of the second folding arm 22 away from the annular cover plate 21 is hinged to the end of the first folding arm 12 away from the base 11. Utilizing the elastic properties of the elastic hook 23, during the process of the annular cover plate 21 covering the protrusion 14, the elastic hook 23 abuts against the locking block 142 and undergoes elastic deformation. After the elastic hook 23 passes the locking block 142, the elastic hook 23 returns to its original shape and forms a locking engagement with the locking block 142, thereby achieving initial locking and positioning between the annular cover plate 21 and the protrusion 14.

[0029] Specifically, such as Figure 8 As shown, locking recesses 24 are provided on the inner wall of the annular cover plate 21 on opposite sides of the elastic hook 23, and the locking recesses 24 correspond one-to-one with the locking blocks 17. The locking blocks 17 are embedded in the interior of the locking recesses 24 to form a secondary locking of mechanical locking, which effectively resists external forces such as collisions and pulling in daily activities and prevents the two fastener components from being accidentally separated.

[0030] In this embodiment, the opening width of the central hole of the annular cover plate 21 is slightly larger than the width of the decorative cover 18, so as to provide sufficient room for the decorative cover 18 to move back and forth, ensuring the smoothness of locking and unlocking operations.

[0031] In this embodiment, the elastic hook 23 is a hook made of SUS material.

[0032] The aforementioned butterfly buckle structure is simple in structure and easy to use. The elastic hook 23 and the buckle block 142 form an initial buckle, and the locking block 17 and the locking recess 24 achieve a secondary locking, providing double protection against buckle slippage. The positioning groove 162 of the sliding part 16 and the positioning pin 152 cooperate to fix the position, preventing the locking force from decreasing and significantly improving the stability and user experience.

[0033] 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.

[0034] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A clasp structure for a watchband, comprising: include: The first fastener assembly includes a base, a first folding arm fixedly connected to one side of the base, a boss extending from the side of the base away from the wrist, a guide plate fixedly connected to the end of the boss facing the base, a sliding member slidably connected to the guide plate, and locking blocks connected to opposite ends of the sliding member on the side away from the first folding arm. The sliding member is located inside the boss; a locking block protrudes from the middle of the side of the boss away from the first folding arm; a positioning pin protrudes from the side of the guide plate facing the sliding member; a positioning groove is provided in the middle of the sliding member, the positioning groove being used to cooperate with the positioning pin to form an end-point positioning structure; and A second fastener assembly is matched and connected to the first fastener assembly; the second fastener assembly includes an annular cover plate, a second folding arm hinged to one side of the annular cover plate, and an elastic hook installed on the inner wall of the annular cover plate; the annular cover plate is used to cover the boss; the elastic hook abuts against the locking block and forms a locking engagement after elastic deformation; the driving sliding member slides linearly along the guide plate inside the boss, and synchronously drives the locking block to pass through the boss and embed into the inner wall of the annular cover plate, forming a secondary lock.

2. The watchband clasp structure according to claim 1, wherein The end of the second folding arm away from the annular cover plate is hinged to the end of the first folding arm away from the base.

3. The watchband clasp structure according to claim 1, wherein The boss has through holes on both sides corresponding to the locking block, and each through hole corresponds to a locking block.

4. The watchband clasp structure according to claim 1, wherein On the inner wall of the annular cover plate, there are locking recesses on opposite sides of the elastic hook. The locking recesses correspond one-to-one with the locking blocks, and the locking blocks are used to embed into the interior of the locking recesses.

5. The watchband clasp structure according to claim 1, wherein A slide rail portion is protruding on the side of the guide plate facing the sliding component, and a positioning pin is protruding on the guide plate corresponding to the middle of the slide rail portion.

6. The watchband clasp structure according to claim 5, wherein The sliding component has a groove on the side facing the guide plate, and the groove matches and connects with the slide rail; the positioning groove connects to the groove.

7. The watchband clasp structure according to claim 1, wherein The positioning groove is dumbbell-shaped, wider at both ends and narrower in the middle. The width of the middle section of the positioning groove is smaller than the diameter of the positioning pin, and the width of the grooves at the opposite ends of the positioning groove is matched with the diameter of the positioning pin.

8. The watchband clasp structure according to claim 1, wherein The boss has a through hole along its thickness direction, which connects to the interior of the base from top to bottom, and the sliding component is located inside the through hole.

9. The watchband clasp structure according to claim 1, wherein The first fastener assembly also includes a decorative cover fixedly connected to the side of the sliding component facing away from the guide plate; the opening width of the central hole of the annular cover plate is greater than the width of the decorative cover.

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