Novel watchband head grain

Abstract

A novel watchband head granule relates to the technical field of watchband head granules. The head particle comprises a head particle body, a locking block is arranged on the head particle body, a first spring needle and a second spring needle are arranged on the two sides of the head particle body respectively, the locking block comprises a locking block upper portion and a clamping block, the locking block upper portion is an oval block, the clamping block is provided with an inclined face, a clamping groove is formed between the locking block upper portion and the clamping block, and the clamping groove corresponds to the first spring needle and the second spring needle. The locking block with the inclined plane is arranged on the head particle body, the spring needles with the conical end heads are arranged on the two sides of the head particle and matched with the locking block, the spring needles can be ejected out towards the two sides only by pulling out the locking block, the spring needles return under the action of the springs, the head particle can be taken out, and the dismounting operation of the head particle is greatly improved.

Description

Technical Field

[0001] The utility model relates to a new type of watch head grain, belonging to the technical field of watch head grain. Background Art

[0002] A watch is a time-indicating device worn daily by people and is also worn as an ornament. In the wearing structure of a watch, the watchband is the main wearing and fixing structure, and the watch head grain is the main component for connecting and fixing some special watchbands, which is more firmly connected and more beautiful.

[0003] In the existing watch head grain, usually one or two spring pin grooves are provided on the shell, and the watch dial is connected through the spring pins. When disassembling and assembling, a special tool is required to push out or press in the steel pins. It is inconvenient to disassemble and assemble the head grain without tools. Therefore, some watch head grain structures that are easy to disassemble have been proposed in the prior art. For example, the patented technology with the publication number CN114587054A discloses a connection structure and a watch for a watchband and a watch dial that can be quickly disassembled. A connection structure for a watchband and a watch dial that can be quickly disassembled includes a head grain, a cover plate, a button, a spring, and a spring bar; a receiving cavity is provided on the head grain, the cover plate covers the receiving cavity of the head grain, the spring is arranged in the receiving cavity and is connected to the spring bar; the button passes through the cover plate, the spring bar passes through the head grain, and one end is located in the receiving cavity, and the button drives the spring bar to move in a direction perpendicular to the button movement; the spring drives the spring bar to reset. The beneficial effect of the present invention is that by pressing the button, the spring bar is driven to contract inward and move, so that the spring bar and the watchband are disengaged. When the button is released, under the action of the resilience of the spring, the spring bar rod resets and is connected to the watchband. Without tools, the quick replacement of the watchband can be realized. However, in this structure, the movement of the spring bar needs to drive the spring bar to move relative to each other through a buckle, and the fixed structure and the pressing and moving structure of the buckle will inevitably become stuck after a certain period of time, resulting in difficulty in retracting the spring bar when pressing the button, which affects the disassembly and assembly of the head grain. Content of the Utility Model

[0004] The purpose of the utility model is to provide a new type of watch head grain for the defects or deficiencies in the prior art. By providing a lock block with an inclined surface on the head grain body, and spring pins with conical ends are arranged on both sides of the head grain and cooperate with the lock block. Just pull out the lock block to push the spring pins out to both sides, and the spring pins will retract under the action of the spring, and the head grain can be taken out, which greatly improves the disassembly operation of the head grain.

[0005] To achieve the above object, the present utility model adopts the following technical solutions: It includes a head grain body 1, a lock block 2 is provided on the head grain body 1, a first spring pin 3 and a second spring pin 4 are respectively provided on both sides of the head grain body 1. The lock block 2 includes an upper lock block 21 and a clamping block 22. The upper lock block 21 is an oval block, the clamping block 22 is provided with an inclined surface, a clamping groove 23 is formed between the upper lock block 21 and the clamping block 22, and the clamping groove 23 corresponds to the first spring pin 3 and the second spring pin 4.

[0006] Further, a lock block groove 11 is provided on the head grain body 1, and the lock block groove 11 is in clearance fit with the upper lock block 21. Elastic pin grooves 12 are provided on both sides of the head grain body 1, and the elastic pin grooves 12 are in clearance fit with the first spring pin 3 and the second spring pin 4.

[0007] Further, two spring grooves are provided at the bottom of the clamping block 22, and two ejecting springs 5 are provided in the spring grooves.

[0008] Further, the first spring pin 3 and the second spring pin 4 have the same structure.

[0009] Further, the first spring pin 3 includes a spring pin seat 31 and a movable ejector pin 32. The movable ejector pin 32 is movably arranged in the spring pin seat 31.

[0010] Further, the spring pin seat 31 is of a cavity structure, and a limiting cavity 311, an ejector pin stroke cavity 312, and an ejector pin fixing cavity 313 are sequentially arranged therein. The inner diameter of the limiting cavity 311 is larger than that of the ejector pin stroke cavity 312, and the inner diameter of the ejector pin stroke cavity 312 is larger than that of the ejector pin fixing cavity 313.

[0011] Further, the transition part between the limiting cavity 311 and the ejector pin stroke cavity 312 is a limiting step 314.

[0012] Further, the movable ejector pin 32 includes a clamping head 321 and a fixing pin 322. The outer diameter of the clamping head 321 is smaller than the inner diameter of the limiting cavity 311. The fixing pin 322 is in clearance fit with the ejector pin fixing cavity 313, and a return spring 33 is provided on the fixing pin 322. The return spring 33 connects the fixing pin 322 and the inside of the ejector pin fixing cavity 313.

[0013] Further, the length of the clamping head 321 is greater than that of the limiting cavity 311, and a limiting edge 323 is provided in the middle of the clamping head 321. The limiting edge 323 is in clearance fit with the limiting cavity 311.

[0014] Further, a disassembly part 6 is provided on the upper lock block 21.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are as follows: By providing a locking block with an inclined surface on the head grain body, and providing spring pins with conical ends on both sides of the head grain to cooperate with the locking block, the spring pins can be pushed out to both sides by simply pulling out the locking block. Under the action of the spring, the spring pins can be retracted to remove the head grain, which greatly improves the disassembly operation of the head grain. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is Figure 1 a second-angle view of

[0019] Figure 3 is Figure 1 an exploded structural schematic diagram of

[0020] Figure 4 is a structural schematic diagram of the first spring pin 3 in the present utility model;

[0021] Figure 5 is a structural schematic diagram of the spring pin seat 31 in the present utility model;

[0022] Figure 6 is a structural schematic diagram of the moving ejector pin 32 in the present utility model.

[0023] Description of the reference numerals: head grain body 1, locking block 2, first spring pin 3, second spring pin 4, ejecting spring 5, disassembly part 6, locking block groove 11, spring pin groove 12, spring pin seat 31, moving ejector pin 32, return spring 33, limiting cavity 311, ejector pin stroke cavity 312, ejector pin fixing cavity 313, limiting step 314, chuck 321, fixing pin 322, limiting edge 323. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Refer to Figures 1-6As shown in the figure, the technical solution adopted in this specific embodiment is as follows: It includes a head grain body 1, on which a locking block 2 is provided. On both sides of the head grain body 1, a first spring pin 3 and a second spring pin 4 are respectively provided. The locking block 2 includes an upper locking block 21 and a clamping block 22. The upper locking block 21 is an oval block, and the bottom of the upper locking block is a horizontal plane. The clamping block 22 is provided with an inclined surface. A clamping groove 23 is formed between the upper locking block 21 and the clamping block 22. The clamping groove 23 corresponds to the first spring pin 3 and the second spring pin 4. During installation, first insert the locking block, and then install the first spring pin and the second spring pin, so that the two spring pins are clamped into the clamping groove. When both ends of the two spring pins are also clamped into the fixing holes of the dial fixing lugs, at this time, the locking block cannot move up and down, and the installation of the head grain is completed;

[0025] A disassembly part 6 is provided on the upper locking block 21, and the disassembly part is exposed outside the head grain body. When disassembly is required, hold the disassembly part and move it upward to drive the locking block to move upward. The inclined surface of the clamping block will push the two spring pins to move to both sides. When the locking block is removed from the head grain body, the two spring pins automatically retract into the head grain body and separate from the dial fixing lugs, so that the head grain body can be taken out to complete the disassembly operation. All installation and disassembly processes do not require external tools, the operation is simple, and the watch will not be damaged during the operation.

[0026] More specifically, a locking block groove 11 is provided on the head grain body 1. The locking block groove 11 has a clearance fit with the upper locking block 21. The clearance fit between the locking block and the locking block groove can facilitate the installation and disassembly of the locking block and will not cause interference;

[0027] Spring pin grooves 12 are provided on both sides of the head grain body 1, and the spring pin grooves are of a communicating structure. The spring pin grooves 12 have a clearance fit with the first spring pin 3 and the second spring pin 4.

[0028] More specifically, two spring grooves are provided at the bottom of the clamping block 22, and two ejecting springs 5 are provided in the spring grooves. The arrangement of the ejecting springs makes it more convenient to take out the locking block.

[0029] More specifically, the first spring pin 3 and the second spring pin 4 have the same structure. The first spring pin 3 includes a spring pin seat 31 and a moving ejector pin 32. The moving ejector pin 32 is movably arranged in the spring pin seat 31. The spring pin seat is a non-moving structure and is arranged in the spring pin groove. The moving ejector pin can move left and right in the spring pin seat, and the connection with the dial fixing lug is mainly realized through the moving ejector pin.

[0030] More specifically, the spring pin seat 31 is a cavity structure, and a limiting cavity 311, an ejector pin stroke cavity 312, and an ejector pin fixing cavity 313 are sequentially arranged therein. The inner diameter of the limiting cavity 311 is larger than that of the ejector pin stroke cavity 312, and the inner diameter of the ejector pin stroke cavity 312 is larger than that of the ejector pin fixing cavity 313.

[0031] More specifically, the transition part between the limiting cavity 311 and the ejector pin stroke cavity 312 is a limiting step 314.

[0032] More specifically, the movable ejector pin 32 includes a chuck 321 and a fixed pin 322. The outer diameter of the chuck 321 is smaller than the inner diameter of the limiting cavity 311. The fixed pin 322 is in clearance fit with the ejector pin fixing cavity 313, and a return spring 33 is arranged on the fixed pin 322. The return spring 33 connects the fixed pin 322 and the inside of the ejector pin fixing cavity 313.

[0033] More specifically, the length of the chuck 321 is greater than that of the limiting cavity 311, and a limiting edge 323 is arranged in the middle of the chuck 321. The limiting edge 323 is in clearance fit with the limiting cavity 311.

[0034] In this embodiment, during installation, the movable ejector pin is pressed to retract it into the head grain body, aligned with the fixing hole of the dial fixing ear. Under the action of the return spring, the movable ejector pin springs into the fixing hole to complete the installation of the head grain. During disassembly, the lock block is pulled upward. Under the push of the inclined surface of the chuck, the movable ejector pin moves to both sides and continues to penetrate into the fixing hole. When the chuck is separated from the chuck, the chuck can be completely taken out. Under the action of the return spring, the movable ejector pin retracts into the head grain body. Since the end of the fixed pin is an arc structure, at this time, when the head grain body is pressed, the fixing hole of the dial fixing ear will press the fixed pin to continue to move into the head grain body, so that the head grain can be removed from the dial. The disassembly process is simple and does not require external tools, which greatly facilitates the disassembly and assembly operations of the watch band head grain and can effectively improve the production speed and maintenance speed.

[0035] The working principle of the present invention: When installing the head grain, first place the head grain body 1 into the lock block groove 11, then insert two spring pins into the spring pin groove 12, and then correspond to the fixing ears on the dial. Press the two spring pins to make the two spring pins further retract into the head grain body 1 and snap into the card slot 23, so that the ends of the fixed pins 322 of the two spring pins are snapped into the fixing holes of the dial fixing ears to complete the installation of the head grain. The installation can be completed without the aid of external tools. When disassembly is required, pull up the disassembly part 6. The inclined surface of the chuck 22 pushes the chuck 321 to move to both sides, so that the lock block 2 can be smoothly taken out from the lock block groove 11. Under the action of the return spring 33, the movable ejector pin 32 retracts into the head grain body 1, and the head grain body 1 can be removed from the dial. Similarly, the head grain can be easily disassembled without tools.

[0036] The above is only used to illustrate the technical solution of the present invention and not to limit it. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present invention shall be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A new type of strap head, characterized by: The invention comprises a head particle body (1), a locking block (2) is arranged on the head particle body (1), a first spring pin (3) and a second spring pin (4) are arranged on both sides of the head particle body (1), the locking block (2) comprises a locking block upper part (21) and a clamping block (22), the locking block upper part (21) is an elliptical block, the clamping block (22) is provided with an inclined surface, a clamping groove (23) is formed between the locking block upper part (21) and the clamping block (22), and the clamping groove (23) corresponds to the first spring pin (3) and the second spring pin (4).

2. A new type of strap head according to claim 1, characterized in that: The head particle body (1) is provided with a locking block groove (11), the locking block groove (11) and the locking block upper part (21) are clearance matched, and spring pin grooves (12) are provided on both sides of the head particle body (1), and the spring pin grooves (12) and the first spring pin (3) and the second spring pin (4) are clearance matched.

3. The novel strap head according to claim 1, characterized in that: The bottom of the clamping block (22) is provided with two spring grooves, and two ejection springs (5) are arranged in the spring grooves.

4. The novel strap head according to claim 1, characterized in that: The first spring needle (3) and the second spring needle (4) have the same structure.

5. The novel strap head according to claim 1, characterized in that: The first spring needle (3) comprises a spring needle seat (31) and a movable ejector pin (32), wherein the movable ejector pin (32) is movably arranged in the spring needle seat (31).

6. The novel strap head according to claim 5, characterized in that: The elastic needle seat (31) is a hollow structure, in which a limit cavity (311), an ejector stroke cavity (312), and an ejector fixing cavity (313) are sequentially arranged. The inner diameter of the limit cavity (311) is larger than that of the ejector stroke cavity (312), and the inner diameter of the ejector stroke cavity (312) is larger than that of the ejector fixing cavity (313).

7. A new type of strap head according to claim 6, characterized in that: The transition portion between the limiting cavity (311) and the ejector stroke cavity (312) is a limiting step (314).

8. The novel strap head according to claim 5, characterized in that: The movable ejector pin (32) comprises a clamping head (321) and a fixing pin (322). The outer diameter of the clamping head (321) is smaller than the inner diameter of the limiting cavity (311). The fixing pin (322) and the ejector pin fixing cavity (313) are clearance-matched. A return spring (33) is arranged on the fixing pin (322). The return spring (33) connects the fixing pin (322) and the inside of the ejector pin fixing cavity (313).

9. The novel strap head according to claim 8, characterized in that: The length of the clamp head (321) is greater than the limiting cavity (311), and a limiting edge (323) is provided in the middle of the clamp head (321), and the limiting edge (323) is clearance-matched with the limiting cavity (311).

10. The novel strap head according to claim 1, characterized in that: A disassembly portion (6) is provided on the upper portion (21) of the locking block.

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