Safety pin capable of preventing mistaken opening

Abstract

The utility model discloses a mistaken opening prevention safety pin which comprises an inner core block, a protection assembly is arranged on the outer surface of the inner core block, a protection shell is installed on the outer surface of the inner core block, a needle point rod moving into a moving-out notch groove can be blocked and protected, the needle point rod is prevented from further moving outwards to be opened, and danger is avoided. By arranging the limiting groove, the protective shell can be limited through the limiting convex block, the situation that the protective shell easily rotates and slips in the using process is avoided, and the safety of a user is improved. And by fixedly connecting the first check block and the second check block, the protective shell can conveniently drive the limiting convex block to rotate and align to the right front of the limiting groove or the strip-shaped groove more conveniently and accurately.

Description

Technical Field

[0001] This utility model relates to the field of safety pin technology, specifically a safety pin to prevent accidental opening. Background Technology

[0002] A safety pin is a flexible pin, usually made of metal, with one end fixed and the other end sharp and openable, used to fasten pieces of cloth, paper, etc. together.

[0003] In the prior art, a safety pin with the publication number "CN204032530U" has one end of the pin body fixed to an end sleeve, and the other end of the pin body is a needle tip. There is an annular groove on one side of the needle tip, which can move within a Z-shaped groove on the end sleeve. It is easier for the needle tip to move from the front to the rear of the Z-shaped groove, which facilitates the fastening of the pin. It is more difficult for the needle tip to move from the rear to the front of the Z-shaped groove, which prevents the pin from coming off.

[0004] However, the above technical solutions and existing technologies have the following drawbacks:

[0005] Although the Z-shaped groove makes it difficult to remove the pin, thus preventing it from easily coming off, in actual use, some children can still follow the Z-shaped groove to remove the pin and open it, creating a dangerous situation. Therefore, this structure only solves the problem of the pin easily coming off, and cannot effectively prevent the pin from being accidentally opened. Its ability to prevent accidental opening needs to be further improved. Summary of the Invention

[0006] The purpose of this invention is to provide a safety pin to prevent accidental opening, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A safety pin designed to prevent accidental opening includes a needle tip, a torsion spring needle body, an inner core block, a removal notch, a needle rod, a blocking groove, and a safety groove. The needle rod is fixedly connected to the lower side of the front end face of the inner core block, and a needle tip is installed above the needle rod. A torsion spring needle body is fixedly connected between the needle tip and the needle rod. A safety groove is formed on the front end face of the inner core block. A blocking groove is formed at the upper end of the safety groove, and a removal notch is formed at the lower end of the safety groove. A protective component is provided on the outer surface of the inner core block, and the protective component enables the inner core block to prevent accidental opening.

[0009] Preferably, the protective component includes a protective shell and a limiting protrusion. The outer surface of the inner core block is fitted with the protective shell, the inner annular side of the protective shell is provided with the limiting protrusion, and the right side of the annular side of the inner core block is provided with a strip groove.

[0010] Preferably, a limiting groove is formed on the upper side of the annular side of the inner core block, and both the limiting groove and the strip groove are matched with the limiting protrusion.

[0011] Preferably, a first stop block is fixedly connected to the right side of the front end face of the inner core block, and a second stop block is fixedly connected to the upper side of the front end face of the inner core block.

[0012] Preferably, the limiting protrusion is a right-angled triangle.

[0013] Preferably, the inner core block has a mounting hole on the lower side of its front end face, and the mounting hole matches the needle bar.

[0014] Preferably, the needle tip rod, torsion spring needle body, and needle rod are an integral structure, and the removal notch, blocking groove, and safety groove are connected.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By installing a protective shell on the outer surface of the inner core block, the needle tip rod that moves into the removal slot can be blocked and protected, preventing the needle tip rod from moving outward and opening further, which would cause danger. By opening a strip groove, it is convenient for the limiting protrusion to move backward, so that the user can move the protective shell backward a certain distance, so as to prevent the protective shell from obstructing the needle tip rod from opening outward. By opening a limiting groove, the limiting protrusion can limit the protective shell, preventing the protective shell from easily rotating and slipping off during use. By fixing and connecting the first stop block and the second stop block respectively, it is convenient for the protective shell to drive the limiting protrusion to rotate more easily and accurately and align it in front of the limiting groove or strip groove.

[0017] 2. By separately opening interconnected removal slots, blocking slots, and safety grooves, a G-shaped safety groove structure is formed on the front face of the inner core block, making the removal path of the needle tip rod more tortuous and more difficult, preventing the needle tip rod from being easily removed and opened by children during use. The G-shaped safety groove structure in this structure is more difficult to remove the needle tip rod than the existing Z-shaped groove structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the explosion state of the protective component in this utility model;

[0020] Figure 3 This is a structural diagram of the inner core block in this utility model;

[0021] Figure 4 for Figure 1 A magnified view of A in the middle.

[0022] In the diagram: 1. Needle tip rod; 2. Torsion spring needle body; 3. Inner core block; 31. Mounting hole; 4. Removal notch; 5. Protective component; 51. Protective shell; 52. Limiting protrusion; 53. Limiting groove; 54. Strip groove; 55. Second stop block; 56. First stop block; 6. Needle rod; 7. Blocking groove; 8. Safety groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution: Example

[0025] A safety pin designed to prevent accidental opening includes a needle tip rod 1, a torsion spring needle body 2, an inner core block 3, a removal notch 4, a needle rod 6, a blocking groove 7, and a safety groove 8. The needle rod 6 is fixedly connected to the lower side of the front end face of the inner core block 3, and the needle tip rod 1 is installed above the needle rod 6. The torsion spring needle body 2 is fixedly connected between the needle tip rod 1 and the needle rod 6. The needle tip rod 1, the torsion spring needle body 2, and the needle rod 6 are an integral structure. The inner core block 3, together with the integrally structured needle tip rod 1, torsion spring needle body 2, and needle rod 6, forms a safety pin. A safety groove 8 is provided on the front end face of the inner core block 3. A blocking groove 7 is provided at the upper end of the safety groove 8, and a removal notch 4 is provided at the lower end of the safety groove. The removal notch 4, the blocking groove 7, and the safety groove 8 are connected and form a G-shaped safety groove 8 structure to prevent the needle tip rod 1 from being easily removed and opened during use.

[0026] The inner core block 3 has a mounting hole 31 on the lower side of its front end face, and the mounting hole 31 matches the needle bar 6. The needle bar 6 is fixed inside the mounting hole 31 by structural adhesive. The mounting hole 31 facilitates the insertion and fixing of the rear end of the needle bar 6 inside the inner core block 3 for use. The outer surface of the inner core block 3 is provided with a protective component 5, which enables the inner core block 3 to prevent accidental opening. This prevents the needle tip bar 1 from being removed and opened when it moves into the removal slot 4, and also increases the difficulty of removing the needle tip bar 1, thereby improving the anti-accidental opening capability and safety of the pin. Example

[0027] Based on Embodiment 1, in this embodiment, by installing a protective shell 51 on the outer surface of the inner core block 3, the needle tip rod 1 that moves into the removal slot 4 can be blocked and protected, preventing the needle tip rod 1 from moving outward and opening further, thus avoiding danger. By opening a limiting groove 53, the protective shell 51 can be limited by the limiting protrusion 52, preventing the protective shell 51 from easily rotating and slipping off during use. By fixing the first stop block 56 and the second stop block 55 to the first stop block 56 and the second stop block 55 respectively, the protective shell 51 can drive the limiting protrusion 52 to rotate more conveniently and accurately and align it in front of the limiting groove 53 or the strip groove 54.

[0028] The protective component 5 includes a protective shell 51 and a limiting protrusion 52. The protective shell 51 is fitted onto the outer surface of the inner core block 3. Both the protective shell 51 and the inner core block 3 are made of engineering plastic. After the protective shell 51, made of engineering plastic, is fitted onto the outer surface of the inner core block 3, it can block the needle tip rod 1 from moving into the removal slot 4, preventing the needle tip rod 1 from being removed and opened. The inner annular side of the protective shell 51 is provided with a limiting protrusion 52. The limiting protrusion 52 and the protective shell 51 are an integral structure. The limiting protrusion 52 is right-angled triangle in shape. After the right-angled triangle limiting protrusion 52 is engaged in the limiting groove 53, it can limit the protective shell 51 and prevent the protective shell 51 from rotating again.

[0029] A strip groove 54 is provided on the right side of the annular side of the inner core block 3, and a limiting groove 53 is provided on the upper side of the annular side of the inner core block 3. Both the limiting groove 53 and the strip groove 54 are matched with the limiting protrusion 52. The strip groove 54 facilitates the movement of the limiting protrusion 52 backward, so that the user can move the protective shell 51 backward a certain distance, so as to prevent the protective shell 51 from obstructing the needle tip rod 1 from opening outward. The limiting groove 53 facilitates the limiting protrusion 52 to be locked in a designated position on the annular side of the inner core block 3 to limit the protective shell 51. The rear end of the strip groove 54 is a sealing structure to prevent the limiting protrusion 52 inside the strip groove 54 from slipping off during the backward movement, thereby preventing the protective shell 51 from slipping off and being lost during the backward movement.

[0030] A first stop 56 is fixedly connected to the right side of the front end face of the inner core block 3. The first stop 56 and the inner core block 3 are an integral structure. The first stop 56 can block and restrict the counterclockwise rotation of the limiting protrusion 52, so that when the protective shell 51 fitted on the outer surface of the inner core block 3 rotates counterclockwise to its final position, the limiting protrusion 52 is exactly in front of the limiting groove 53. A second stop 55 is fixedly connected to the upper side of the front end face of the inner core block 3. The second stop 55 and the inner core block 3 are an integral structure. The second stop 55 can block the clockwise rotation of the limiting protrusion 52. 2. Obstruction and restriction are implemented so that when the limiting protrusion 52 moves forward from the limiting groove 53 and rotates clockwise into place, the limiting protrusion 52 is exactly in front of the strip groove 54. The front-to-back length of the inner wall of the protective shell 51 is slightly greater than the total length of the inner core block 3 plus the front-to-back length of the limiting protrusion 52. After the protective shell 51 is fitted onto the outer surface of the inner core block 3 from back to front, the limiting protrusion 52 is in front of the inner core block 3. This allows the user to rotate the limiting protrusion 52 into the limiting groove 53 or the strip groove 54 through the protective shell 51 as needed.

[0031] Working principle: By creating the removal notch 4, the blocking groove 7, and the safety groove 8, a G-shaped safety groove 8 structure is formed on the front face of the inner core block 3. This makes the removal path of the pin tip 1 more tortuous and difficult, preventing the pin tip 1 from being easily removed and opened by children during use. When it is necessary to improve the safety of the pin, the adult first pinches the protective shell 51 and rotates it to align the limiting protrusion 52 with the strip groove 54. Then, the protective shell 51 is moved forward to fit onto the outer surface of the inner core block 3. During this process, because the shape of the limiting protrusion 52 is a right-angled triangle, therefore... When initially installing the protective shell 51 on the outer surface of the inner core block 3, simply push it forward to allow the limiting protrusion 52 to engage in the slot 54. After the protective shell 51 is in place, rotate it counterclockwise to cause the limiting protrusion 52 to rotate counterclockwise along with it. During this process, the second stop 55 will block and restrict the limiting protrusion 52, allowing it to align more quickly and accurately with the limiting groove 53. Then, move the protective shell 51 backward to allow it to move backward along with the limiting protrusion 52 and engage in the limiting groove 53 (see reference). Figure 1 This limits the protective shell 51, preventing it from easily rotating and slipping off during use. In this way, the protective shell 51 can not only protect the entire inner core 3, but also prevent the needle tip rod 1 from moving outward. Even if the needle tip rod 1 is moved into the exit notch 4 according to the structure trajectory of the G-shaped safety groove 8 when the child is using this pin, the needle tip rod 1 will not continue to move out and open, thus making the pin safer to use.

[0032] When the needle tip rod 1 needs to be removed and opened, the adult first moves the protective shell 51 forward, causing the protective shell 51 to move forward with the limiting protrusion 52 and separate from the limiting groove 53. Then, the protective shell 51 is rotated clockwise, causing the protective shell 51 to rotate clockwise with the limiting protrusion 52. During this process, the first stop 56 will block and restrict the limiting protrusion 52 so that the limiting protrusion 52 can be aligned with the strip groove 54 more quickly and accurately. Then, the protective shell 51 is moved backward, so that the limiting protrusion 52 can move backward and be inserted into the strip groove 54. After the protective shell 51 moves the limiting protrusion 52 in the strip groove 54 into place, the protective shell 51 can avoid obstructing the needle tip rod 1 from opening outward. Then, the adult can remove and open the needle tip rod 1 according to the trajectory of the blocking groove 7, the safety groove 8 and the removal notch 4.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A safety pin to prevent accidental opening, comprising a pin tip (1), a torsion spring pin body (2), an inner core block (3), a removal notch (4), a pin shaft (6), a blocking groove (7), and a safety groove (8), characterized in that: A needle rod (6) is fixedly connected to the lower side of the front end face of the inner core block (3). A needle tip rod (1) is installed above the needle rod (6). A torsion spring needle body (2) is fixedly connected between the needle tip rod (1) and the needle rod (6). A safety groove (8) is opened on the front end face of the inner core block (3). A blocking groove (7) is opened at the upper end of the safety groove (8). A removal notch (4) is opened at the lower end of the safety groove. A protective component (5) is provided on the outer surface of the inner core block (3). The protective component (5) enables the inner core block (3) to have the ability to prevent accidental opening.

2. The safety pin for preventing accidental opening according to claim 1, characterized in that: The protective component (5) includes a protective shell (51) and a limiting protrusion (52). The outer surface of the inner core block (3) is fitted with the protective shell (51). The inner annular side of the protective shell (51) is provided with a limiting protrusion (52). The right side of the annular side of the inner core block (3) is provided with a strip groove (54).

3. A safety pin to prevent accidental opening according to claim 2, characterized in that: The inner core block (3) has a limiting groove (53) on the upper side of its annular side. The limiting groove (53) and the strip groove (54) are both matched with the limiting protrusion (52).

4. The safety pin for preventing accidental opening according to claim 1, characterized in that: A first stop (56) is fixedly connected to the right side of the front end face of the inner core block (3), and a second stop (55) is fixedly connected to the upper side of the front end face of the inner core block (3).

5. A safety pin to prevent accidental opening according to claim 2, characterized in that: The limiting protrusion (52) is a right triangle in shape.

6. A safety pin to prevent accidental opening according to claim 1, characterized in that: The inner core block (3) has a mounting hole (31) on the lower side of its front end face, and the mounting hole (31) matches the needle bar (6).

7. A safety pin to prevent accidental opening according to claim 1, characterized in that: The needle tip rod (1), the torsion spring needle body (2) and the needle rod (6) are an integral structure, and the removal notch (4), the blocking groove (7) and the safety groove (8) are connected.

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