Anti-unhooking coil spring

Abstract

The utility model relates to the technical field of coil springs, and discloses an anti-unhooking coil spring which comprises a coil spring assembly, an installation structure and an anti-unhooking structure, the coil spring assembly is installed in the installation structure, the anti-unhooking structure is installed on the outer side of the installation structure, the anti-unhooking structure limits the coil spring assembly, and the installation structure is installed on the outer side of the installation structure. The anti-unhooking structure comprises a lug block, a clamping groove, a mounting groove, an inserting column and a spring, the clamping groove is formed in the top end of the lug block and the top end of the fixing box, the mounting groove is formed in the lug block, the inserting column is slidably mounted in the mounting groove, a fixing plate is fixedly mounted on the inserting column, the inserting column is sleeved with the spring, and one end of the spring is fixedly connected with the fixing plate. According to the anti-unhooking structure, the inserting column automatically resets under the elastic force of the spring, so that the inserting column penetrates through the inserting hole, the hook part is fixed, the automatic locking function can be achieved, extra manual operation is not needed, and the possibility of manual operation errors is reduced.

Description

Technical Field

[0001] This utility model relates to the field of coil spring technology, and in particular to an anti-disengagement coil spring. Background Technology

[0002] Planar spiral springs, also known as clockwork springs, are springs with one end fixed and the other end subjected to torque. Under the action of torque, the spring material undergoes bending elastic deformation, causing the spring to twist in a plane. The magnitude of the deformation angle is proportional to the torque. Anti-disengagement spiral springs employ a special hook design or add an anti-disengagement device, making the spiral spring more secure during use and effectively preventing the hook end from detaching, thereby improving its safety and reliability. They are widely used in automotive, machinery, and electronics industries.

[0003] An investigation revealed that a Chinese utility model discloses an anti-disengagement coil spring (publication number: CN218718377U). Although the aforementioned patent does not affect the retraction speed of the coil spring body through the locking structure, thus not affecting efficiency and ensuring the maximum performance release of the coil spring, the locking groove may be worn during the frequent contact and friction between the coil spring body and the hook. Over time, the accuracy of the locking groove may decrease, causing the hook to fail to lock reliably, thereby affecting the anti-disengagement effect. Especially under high frequency and heavy load conditions, wear may be accelerated, increasing maintenance frequency and cost. Utility Model Content

[0004] In view of the fact that the locking groove may be worn during the frequent contact and friction between the coil spring body and the hook, and the accuracy of the locking groove may decrease over time, causing the hook to be unable to lock reliably, thus affecting the anti-disengagement effect, especially under high frequency and heavy load, the wear may be aggravated, increasing the maintenance frequency and cost, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide an anti-disengagement coil spring. The purpose is that during the frequent contact and friction between the coil spring body and the hook, the locking groove may be worn. Over time, the accuracy of the locking groove may decrease, causing the hook to be unable to lock reliably, thus affecting the anti-disengagement effect. Especially under high frequency and heavy load conditions, the wear may be aggravated, increasing the maintenance frequency and cost.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an anti-disengagement coil spring, comprising a coil spring assembly, an installation structure, and an anti-disengagement structure. The coil spring assembly is installed inside the installation structure, and the anti-disengagement structure is installed outside the installation structure. The anti-disengagement structure limits the coil spring assembly. The anti-disengagement structure includes an ear block, a slot, an installation groove, a post, and a spring. The slot is formed at the top of the ear block and the fixing box. The installation groove is located inside the ear block. The post is slidably installed inside the installation groove. A fixing plate is fixedly installed on the post. The spring is sleeved on the post, and one end of the spring is fixedly connected to the fixing plate.

[0007] As a preferred embodiment of the anti-detachment coil spring of this utility model, the coil spring assembly includes a coil spring body, a hook, and a socket. The hook is fixedly installed at the end of the coil spring body, and the socket is provided on the hook.

[0008] As a preferred embodiment of the anti-disengagement coil spring of this utility model, the installation structure includes a fixing box, a first fixing block, a protective cover, and a second fixing block. The interior of the fixing box is set as a cavity, and an installation hole is provided in the middle of the fixing box. The first fixing blocks are set as a pair and fixedly installed on the outer wall of the fixing box. A sliding groove is provided on the first fixing block. The second fixing blocks are set as a pair and fixedly installed on the side wall of the protective cover. A slide rail that matches the sliding groove is provided at the bottom of the second fixing block.

[0009] As a preferred embodiment of the anti-disengagement coil spring of this utility model, the ear block is fixedly installed on the outer wall of the fixing box, and the slot is compatible with the coil spring body.

[0010] As a preferred embodiment of the anti-disengagement coil spring of this utility model, the insert extends through the mounting groove to the outside of the ear block, the insert and the insertion hole are adapted to each other, one end of the spring is fixedly connected to the fixing plate, the other end of the spring is fixedly connected to the inner wall of the mounting groove, and the end of the insert extending out of the ear block is fixedly installed with a handle.

[0011] As a preferred embodiment of the anti-disengagement coil spring of this utility model, a limiting hole is provided at the end of the insert away from the handle, a screw is threadedly installed on the inner wall of the ear block, the screw and the limiting hole cooperate, and a turntable is fixedly installed at the top end of the screw.

[0012] The beneficial effects of this utility model are:

[0013] 1. Through the anti-disengagement structure, the insert automatically resets under the spring force, allowing the insert to pass through the insertion hole and thus fix the hook. It can achieve an automatic locking function without additional manual operation, reducing the possibility of human error and improving the convenience of use. The end of the screw extends into the limiting hole to limit and fix the insert. The insert is not easy to move due to vibration, impact or external interference, thus effectively preventing the spring body from falling off. The locking effect of the screw can ensure that the insert always stays in the correct position, providing additional safety protection.

[0014] 2. The installation structure uses a sliding groove to limit the slide rail, thereby fixing the second fixing block. This allows the protective cover to seal the fixing box, preventing external objects from interfering with the coil spring and ensuring its long-term stable operation. Operators can easily install or disassemble the coil spring, saving time and labor costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a partial three-dimensional structural schematic diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the coil spring assembly of this utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the protective cover of this utility model;

[0021] Figure 6 This is a schematic diagram of the anti-detachment structure of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Spring assembly; 11. Spring body; 12. Hook; 13. Insertion hole; 2. Mounting structure; 21. Fixing box; 22. Mounting hole; 23. First fixing block; 24. Slide groove; 25. Protective cover; 26. Second fixing block; 27. Slide rail; 3. Anti-disengagement structure; 31. Ear block; 32. Slot; 33. Mounting groove; 34. Insertion post; 35. Fixing plate; 36. Spring; 37. Limiting hole; 38. Screw. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] Refer to attached figure Figure 1 - Appendix Figure 5 This is the first embodiment of the present invention, which provides an anti-disengagement coil spring, including a coil spring assembly 1, a mounting structure 2, and an anti-disengagement structure 3. The coil spring assembly 1 is installed inside the mounting structure 2, and the anti-disengagement structure 3 is installed outside the mounting structure 2. The anti-disengagement structure 3 limits the coil spring assembly 1. The coil spring assembly 1 includes a coil spring body 11, a hook 12, and an insertion hole 13. The hook 12 is fixedly installed at the end of the coil spring body 11, and the insertion hole 13 is provided on the hook 12. The mounting structure 2 includes a fixing box 21, a first fixing block 23, a protective cover 25, and a second fixing block 26. The interior of the fixing box 21 is set as a cavity, and a mounting hole 22 is provided in the middle of the fixing box 21. The coil spring body 11 is installed inside the fixing box 21. The first fixing blocks 23 are set as a pair and fixedly installed on the outer wall of the fixing box 21. A sliding groove 24 is provided on the first fixing block 23. The second fixing blocks 26 are set as a pair and fixedly installed on the side wall of the protective cover 25. A slide rail 27 adapted to the sliding groove 24 is provided at the bottom of the second fixing block 26.

[0027] During use, the coil spring body 11 is installed inside the cavity of the fixing box 21. When the coil spring body 11 is not needed, the protective cover 25 is attached to the top of the fixing box 21, and the slide rail 27 and the slide groove 24 are aligned. The protective cover 25 is rotated, which drives the second fixing block 26 to rotate, thereby driving the slide rail 27 to rotate, so that the slide rail 27 extends into the slide groove 24. The slide rail 27 is limited by the slide groove 24, thereby fixing the second fixing block 26. In turn, the protective cover 25 closes the fixing box 21, thereby protecting the coil spring body 11 and preventing some debris from falling into the fixing box 21 and affecting its use.

[0028] Example 2

[0029] Refer to attached figure Figure 2 , Figure 4 and attached Figure 6 This is the second embodiment of the present invention, which differs from the first embodiment in that:

[0030] The anti-disengagement structure 3 includes an ear block 31, a slot 32, a mounting groove 33, a post 34, and a spring 36. The ear block 31 is fixedly installed on the outer wall of the fixing box 21. The slot 32 is formed at the top of the ear block 31 and the fixing box 21, and the slot 32 is adapted to the coil spring body 11. The mounting groove 33 is located inside the ear block 31. The post 34 is slidably installed inside the mounting groove 33, and extends through the mounting groove 33 to the outside of the ear block 31. The post 34 is adapted to the insertion hole 13. 4. A fixing plate 35 is fixedly installed in the mounting groove 33. A spring 36 is sleeved on the insert post 34. One end of the spring 36 is fixedly connected to the fixing plate 35, and the other end of the spring 36 is fixedly connected to the inner wall of the mounting groove 33. A handle is fixedly installed at the end of the insert post 34 that extends out of the ear block 31. A limit hole 37 is provided at the end of the insert post 34 away from the handle. A screw 38 is threaded on the inner wall of the ear block 31. The screw 38 and the limit hole 37 cooperate. A turntable is fixedly installed at the top of the screw 38.

[0031] During use, pulling the handle causes the insert 34 to slide in the mounting slot 33. The insert 34 moves the fixing plate 35, which compresses the spring 36, causing the insert 34 to retract into the mounting slot 33. When the coil spring body 11 is installed inside the fixing box 21, the hook 12 is engaged in the slot 32, thus aligning the insertion hole 13 and the insert 34. Releasing the handle causes the insert 34 to automatically reset under the force of the spring 36, allowing the insert 34 to pass through the insertion hole 13 and thus fix the hook 12. Rotating the turntable causes the screw 38 to rotate, and the screw 38 moves threadedly inside the lug 31, causing the end of the screw 38 to extend into the limiting hole 37, thus limiting and fixing the insert 34. The screw 38 fixes the insert 34, preventing accidental contact with the insert 34, which could cause the insert 34 to slide and cause the coil spring body 11 to fall off.

[0032] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A breakaway hook prevention coil spring, characterized by: Including the coil spring assembly (1), the mounting structure (2) and the anti-unhooking structure (3), the coil spring assembly (1) is installed inside the mounting structure (2), the anti-unhooking structure (3) is installed on the outside of the mounting structure (2), the anti-unhooking structure (3) is limited to the coil spring assembly (1), the anti-unhooking structure (3) includes lug (31), card slot (32), installation slot (33), plug post (34), spring (36), the card slot (32) is set in lug (31) and the top of fixed box (21), the installation slot (33) is arranged inside the lug (31), the plug post (34) is slidably installed inside the installation slot (33), the plug post (34) is fixedly installed with fixed plate (35), the spring (36) is sleeved on the plug post (34), one end of the spring (36) is fixedly connected with the fixed plate (35).

2. The breakproof spring of claim 1 wherein: The coil spring assembly (1) includes a coil spring body (11), a hook portion (12) and a plug hole (13), the hook portion (12) is fixedly installed at the end of the coil spring body (11), and the plug hole (13) is arranged on the hook portion (12).

3. The breakproof spring of claim 2 wherein: The mounting structure (2) includes a fixed box (21), a first fixed block (23), a protective cover (25) and a second fixed block (26), the inside of the fixed box (21) is provided as a cavity, the mounting hole (22) is arranged in the middle of the fixed box (21), the first fixed block (23) is arranged as a pair and is fixedly installed on the outer wall of the fixed box (21), the sliding groove (24) is arranged on the first fixed block (23), the second fixed block (26) is arranged as a pair and is fixedly installed on the side wall of the protective cover (25), and the bottom of the second fixed block (26) is provided with a sliding rail (27) matched with the sliding groove (24).

4. The anti-come-apart spring according to claim 1, characterized in that: The lug (31) is fixedly installed on the outer wall of the fixed box (21), and the card slot (32) is matched with the coil spring body (11).

5. The breakproof spring of claim 4 wherein: The plug post (34) extends to the outside of the lug (31) through the installation slot (33), the plug post (34) is matched with the plug hole (13), one end of the spring (36) is fixedly connected with the fixed plate (35), the other end of the spring (36) is fixedly connected with the inner wall of the installation slot (33), and the end of the plug post (34) extending out of the lug (31) is fixedly installed with a handle.

6. The breakproof spring of claim 5 wherein: The end of the plug post (34) away from the handle is provided with a limiting hole (37), the inner wall of the lug (31) is threadedly installed with a screw rod (38), the screw rod (38) is matched with the limiting hole (37), and the top end of the screw rod (38) is fixedly installed with a rotating disc.

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