A type of anti-disengagement limiting coil spring

Abstract

This utility model relates to the field of spring technology, specifically a helical spring for preventing detachment and limiting movement. The utility model includes a spring body, with hooks fixedly connected to both ends. Annular sleeves are rotatably connected to the outer circumference of each hook. After an object is attached to the hooks at both ends of the spring body, the connecting plate is rotated until the surface of the second anti-detachment block on the connecting plate is in contact with the surface of the first anti-detachment block. At this point, the second anti-detachment block and the connecting plate block the opening of the hook. Pulling the pull ring causes the second rectangular locking block to enter the second sliding groove. The first rectangular locking block then engages with the first rectangular locking groove of the second anti-detachment block, achieving a fixed lock between the two blocks. Releasing the pull ring causes the spring to release its elastic force, pushing the second rectangular locking block into the second rectangular locking groove, forming a second locking mechanism to prevent the first rectangular locking block from accidentally slipping off. This double locking enhances the stability of the object, ensuring it is stably attached to the hook without slipping.

Description

Technical Field

[0001] This utility model relates to the field of spring technology, specifically a helical spring with anti-disengagement and limiting function. Background Technology

[0002] A spring is a mechanical part that uses elastic deformation to achieve functions such as shock absorption, energy storage, and resetting. It is made by winding or molding elastic materials into a specific structure. Among them, hook springs are a common type, with hook structures at the ends for easy and quick assembly and fixing. They are widely used in mechanical equipment, household products, and other scenarios. Their core is to generate elastic deformation under the action of external force and return to their original shape after the external force is removed. They combine elastic function with ease of assembly and are an indispensable basic component in industrial production and daily life.

[0003] Most existing springs have relatively simple hook structures, with the opening directly exposed and without any shielding or protection. When an object is hung on the hook, if it encounters shaking or vibration, the object is prone to slipping off along the opening, which not only affects the normal operation of the equipment but also poses certain safety hazards and is difficult to meet the usage requirements for assembly stability. Therefore, we propose a helical spring with anti-slip limiting. Summary of the Invention

[0004] The purpose of this invention is to provide a helical spring with anti-disengagement and limiting function to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solutions: A helical spring for preventing detachment includes a spring body, with hooks fixedly connected to both ends of the spring body, annular sleeves rotatably connected to the outer circumference of each of the two hooks, and an anti-detachment block fixedly connected to the open end of each of the two hooks. A connecting plate is fixedly connected to the surface of the annular sleeve, and a second anti-detachment block is fixedly connected to the side wall of the connecting plate away from the annular sleeve. The side wall of the second anti-detachment block is movably fitted with the side wall of the first anti-detachment block. A sliding groove is provided on one side wall of the anti-detachment block, and a rectangular locking block is slidably connected to the inner wall of the sliding groove. A rectangular slot is provided on one side wall of the second anti-detachment block, and the surface of the first rectangular slot is movably engaged in the first rectangular slot. A rectangular slot 2 is provided on one side wall of the rectangular card block 1, and a sliding groove 2 is provided on one side wall of the rectangular card slot 1. A rectangular card block 2 is slidably connected to the inner wall of the sliding groove 2, and the rectangular card block 2 is movably engaged in the rectangular card slot 2.

[0006] Preferably, a threaded rod is threaded onto one side wall of the anti-detachment block, one end of the threaded rod is rotatably connected to the wall plate of the rectangular locking block, and the other end of the threaded rod passes through the anti-detachment block and is fixedly connected to a handwheel.

[0007] Preferably, the inner cavity of the second slide is provided with a drive spring for driving the second rectangular block to move. One end of the drive spring is fixedly connected to the wall of the second slide, and the other end of the drive spring is fixedly connected to the wall plate of the second rectangular block.

[0008] Preferably, a pull rod is fixedly connected to the side wall of the rectangular card block two away from the rectangular card slot one. The circumferential surface of the pull rod is slidably connected to the wall plate of the anti-detachment block two. The end of the pull rod away from the rectangular card block two passes through the wall plate of the anti-detachment block two and is fixedly connected to a pull ring. The circumferential surface of the pull rod slides at the inner ring of the drive spring.

[0009] Preferably, the surface of the pull ring is fixedly connected with an anti-slip sleeve.

[0010] Preferably, after the connecting plate is rotated to a specified angle, the surfaces of anti-detachment block one and anti-detachment block two are in contact.

[0011] The beneficial effects of this utility model are: This invention, through the arrangement of a spring body, a rotating ring, and a connecting plate, allows for the following: after an object is attached to the hooks at both ends of the spring body, the connecting plate is rotated until the surface of the second anti-detachment block on the connecting plate is in contact with the surface of the first anti-detachment block. At this point, the second anti-detachment block and the connecting plate block the opening of the hook. Pulling the pull ring causes the second rectangular locking block to enter the second sliding groove. The first rectangular locking block then engages with the first rectangular slot of the second anti-detachment block, thus securing the first and second anti-detachment blocks together. Releasing the pull ring causes the spring to release its elasticity, pushing the second rectangular locking block into the second rectangular slot, forming a second locking mechanism. This prevents the first rectangular locking block from accidentally slipping off. The double locking enhances the stability of the object's anti-detachment function, ensuring that the object is stably attached to the hook without slipping. This not only guarantees the continuous normal operation of the equipment but also reduces safety hazards, meeting the requirements for assembly stability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the anti-detachment block of this utility model; Figure 4 This is a schematic diagram of the internal structure of the anti-detachment block 2 of this utility model.

[0013] The following are the reference numerals in the attached diagram: 1. Spring body; 2. Hook; 3. Ring sleeve; 4. Connecting plate; 5. Anti-detachment block one; 6. Slide groove one; 7. Rectangular locking block one; 8. Anti-detachment block two; 9. Rectangular locking groove two; 10. Threaded rod; 11. Handwheel; 12. Rectangular locking groove one; 13. Slide groove two; 14. Rectangular locking block two; 15. Pull rod; 16. Pull ring; 17. Drive spring. Detailed Implementation

[0014] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figures 1-4 As shown, a helical spring with anti-detachment limiting includes a spring body 1 with hooks 2 fixedly connected to both ends. A ring sleeve 3 is rotatably connected to the outer circumference of each hook 2. Anti-detachment blocks 5 are fixedly connected to the open ends of each hook 2. A connecting plate 4 is fixedly connected to the surface of the ring sleeve 3. An anti-detachment block 8 is fixedly connected to the side wall of the connecting plate 4 away from the ring sleeve 3. After the connecting plate 4 rotates to a specified angle, the surfaces of anti-detachment blocks 5 and 8 fit together. A sliding groove 6 is provided on one side wall of anti-detachment block 5. A rectangular locking block 7 is slidably connected to the inner wall of the sliding groove 6. A rectangular slot 12 is provided on one side wall of anti-detachment block 8. The surface of the rectangular locking block 7 is movably engaged in the rectangular slot 12. A threaded rod 10 is threadedly sleeved on one side wall of anti-detachment block 5. One end of the threaded rod 10 is rotatably connected to the wall plate of the rectangular locking block 7. The other end of the threaded rod 10 passes through anti-detachment block 5 and is fixedly connected to a handwheel 11.

[0016] In practice, after the hooks 2 at both ends of the spring body 1 have completed the loading of the object, the ring sleeve 3 is rotated to drive the connecting plate 4 to rotate synchronously until the anti-detachment block 2 8 on the connecting plate 4 is in contact with the surface of the anti-detachment block 1 5. At this time, the anti-detachment block 2 8 and the connecting plate 4 form a blockage on the opening of the hook 2, blocking the path of the object to slide off along the opening. Then, turn the handwheel 11 to drive the threaded rod 10 to rotate. The rotation of the threaded rod 10 causes the rectangular locking block 7 to slide along the slide groove 6, so that the rectangular locking block 7 is locked into the rectangular slot 12 of the anti-detachment block 28, thereby fixing and locking the anti-detachment block 5 and the anti-detachment block 28 to prevent the ring sleeve 3 from being accidentally rotated and causing the opening to be exposed. When an object needs to be disassembled, turn the handwheel 11 in the opposite direction to disengage the rectangular locking block 7 from the rectangular locking slot 12, and then turn the ring sleeve 3 to open the opening to complete the disassembly of the object.

[0017] As a technical optimization of this utility model, a rectangular slot 9 is provided on one side wall of the rectangular card block 12, and a sliding groove 13 is provided on one side wall of the rectangular slot 12. A rectangular card block 14 is slidably connected to the inner wall of the sliding groove 13. The rectangular card block 14 is movably engaged in the rectangular slot 9. A drive spring 17 for driving the rectangular card block 14 to move is provided in the inner cavity of the sliding groove 13. One end of the drive spring 17 is fixedly connected to the groove wall of the sliding groove 13, and the other end of the drive spring 17 is fixedly connected to the wall plate of the rectangular card block 14. A pull rod 15 is fixedly connected to the side wall of the rectangular card block 14 away from the rectangular slot 12. The circumferential surface of the pull rod 15 is slidably connected to the wall plate of the anti-detachment block 28. A pull ring 16 is fixedly connected to the end of the pull rod 15 away from the rectangular card block 14 through the wall plate of the anti-detachment block 28. The circumferential surface of the pull rod 15 slides at the inner ring of the drive spring 17. An anti-slip sleeve is fixedly connected to the surface of the pull ring 16.

[0018] In practice, pulling the pull ring 16 causes the drive spring 17 to contract, and the rectangular block 14 enters the slide groove 13. Then, the rectangular block 7 is inserted into the rectangular slot 12. At this time, the rectangular slot 29 is aligned with the slide groove 23. Releasing the pull ring 16 releases the spring 17, which pushes the rectangular block 14 into the rectangular slot 29, forming a second locking, which prevents the rectangular block 7 from accidentally slipping out. The double locking improves the stability of the anti-slipping mechanism.

[0019] In use, after the hooks 2 at both ends of the spring body 1 have completed the attachment of the object, the ring sleeve 3 is rotated to drive the connecting plate 4 to rotate synchronously until the surface of the anti-detachment block 2 8 on the connecting plate 4 is in contact with the surface of the anti-detachment block 1 5. At this time, the anti-detachment block 2 8 and the connecting plate 4 block the opening of the hook 2. Pulling the pull ring 16 drives the rectangular locking block 2 14 into the slide groove 2 13. Then, the handwheel 11 is rotated to drive the threaded rod 10 to rotate. The rotation of the threaded rod 10 drives the rectangular locking block 1 7 to slide along the slide groove 1 6, so that the rectangular locking block 1 7 is locked into the rectangular locking groove 1 12 of the anti-detachment block 2 8, thus fixing and locking the anti-detachment block 1 5 and the anti-detachment block 2 8. Releasing the pull ring 16 drives the spring 17 to release the elastic force, pushing the rectangular locking block 2 14 into the rectangular locking groove 2 9, forming a second locking, preventing the rectangular locking block 1 7 from accidentally slipping off. The double locking improves the stability of the object's anti-detachment.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A helical spring for preventing disengagement and limiting movement, comprising a spring body (1), characterized in that, Both ends of the spring body (1) are fixedly connected to hooks (2), and the outer circumferential walls of the two hooks (2) are rotatably connected to annular sleeves (3). The open ends of the two hooks (2) are fixedly connected to anti-detachment blocks (5). A connecting plate (4) is fixedly connected to the surface of the annular sleeve (3). A second anti-detachment block (8) is fixedly connected to the side wall of the connecting plate (4) away from the annular sleeve (3). The side wall of the second anti-detachment block (8) is movably fitted with the side wall of the first anti-detachment block (5). A sliding groove (6) is provided on one side wall of the anti-detachment block (5), and a rectangular locking block (7) is slidably connected to the inner wall of the sliding groove (6). A rectangular slot (12) is provided on one side wall of the anti-detachment block 2 (8), and the surface of the rectangular slot 1 (7) is movably engaged in the rectangular slot 1 (12); A rectangular slot 2 (9) is provided on one side wall of the rectangular card block 1 (7), and a sliding groove 2 (13) is provided on one side wall of the rectangular card slot 1 (12). A rectangular card block 2 (14) is slidably connected to the inner wall of the sliding groove 2 (13), and the rectangular card block 2 (14) is movably engaged in the rectangular card slot 2 (9).

2. The anti-disengagement limiting helical spring according to claim 1, characterized in that, A threaded rod (10) is threaded onto one side wall of the anti-detachment block (5). One end of the threaded rod (10) is rotatably connected to the wall plate of the rectangular clamp block (7). The other end of the threaded rod (10) passes through the anti-detachment block (5) and is fixedly connected to a handwheel (11).

3. The anti-disengagement limiting helical spring according to claim 2, characterized in that, The inner cavity of the slide groove 2 (13) is provided with a drive spring (17) for driving the rectangular block 2 (14) to move. One end of the drive spring (17) is fixedly connected to the groove wall of the slide groove 2 (13), and the other end of the drive spring (17) is fixedly connected to the wall plate of the rectangular block 2 (14).

4. A helical spring for preventing disengagement and limiting movement according to claim 3, characterized in that, A pull rod (15) is fixedly connected to the side wall of the rectangular card block 2 (14) away from the rectangular card slot 1 (12). The circumferential surface of the pull rod (15) is slidably connected to the wall plate of the anti-detachment block 2 (8). The end of the pull rod (15) away from the rectangular card block 2 (14) passes through the wall plate of the anti-detachment block 2 (8) and is fixedly connected to a pull ring (16). The circumferential surface of the pull rod (15) slides at the inner ring of the drive spring (17).

5. A helical spring for preventing disengagement and limiting movement according to claim 4, characterized in that, The surface of the pull ring (16) is fixedly connected with an anti-slip sleeve.

6. A helical spring for preventing disengagement and limiting movement according to claim 1, characterized in that, After the connecting plate (4) is rotated to the specified angle, the surfaces of the first anti-detachment block (5) and the second anti-detachment block (8) are in contact.

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