Anti-loose self-locking helical spring connecting piece

Abstract

The utility model relates to spring connecting piece field, and disclose a kind of anti-loosening self-locking spiral spring connecting piece, including circular tube and connecting round block, the inside of the circular tube is provided with spring pull assembly, the end of the circular tube is provided with clamping assembly, spring pull assembly is used to drive clamping assembly to move to mutually diverging side, clamping assembly is clamped with connecting round block, through the collaborative design of spring pull assembly and clamping assembly, when loosening outside pull block, spring rebound drives conical protruding extrusion block, so that clamping rod is inclined to mutually diverging side and is clamped into inner wall clamping groove, form stable self-locking structure, can effectively resist vibration, external force impact and other working conditions, significantly improve the anti-loosening performance of connection, avoid the problem that traditional connecting piece is easy to loosen.

Description

Technical Field

[0001] This utility model relates to the field of spring connectors, specifically a self-locking anti-loosening helical spring connector. Background Technology

[0002] In the field of modern construction and mechanical connections, reliable and efficient connection methods have always been a focus of research and practice. Traditional connectors reveal many problems when faced with complex working conditions. For example, in building construction, when fixing objects to walls or other bases, the commonly used bolt and nut connection method, although relatively convenient to install, is prone to loosening under long-term exposure to vibration, thermal expansion and contraction, and external impacts, leading to connection failure and affecting the stability and safety of the structure.

[0003] Just like the external fixtures of some high-rise buildings, the probability of ordinary connectors loosening increases significantly due to long-term exposure to wind, rain, and airflow vibrations, resulting in high maintenance costs and safety hazards. In the machinery manufacturing industry, the high-frequency vibrations generated during equipment operation also frequently cause traditional connectors to loosen, thereby affecting the normal operation of the equipment and reducing production efficiency.

[0004] In pipe connections, traditional methods such as welding and tapping are not only cumbersome and require highly skilled workers, but also demanding in terms of working environment. Operations in confined spaces are difficult and pose safety risks. Furthermore, repairs and replacements after welding are costly and complex. While press-fit connections are relatively simple, the fittings are often unusable after disassembly, resulting in resource waste. Therefore, we propose a self-locking, anti-loosening spiral spring connector. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an anti-loosening self-locking helical spring connector, which solves the aforementioned problems.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a self-locking anti-loosening spiral spring connector, comprising a circular tube and a connecting circular block, wherein a spring pulling assembly is provided inside the circular tube, and a snap-fit ​​assembly is provided at the end of the circular tube, the spring pulling assembly being used to drive the snap-fit ​​assembly to move to opposite sides, and the snap-fit ​​assembly snapping into the connecting circular block.

[0007] Preferably, the spring-loaded snap-fit ​​assembly includes a transverse insertion shaft, a circular limiting block, and a spring. The circular tube has an internal cavity, and one end of the circular tube has a circular insertion hole communicating with the internal cavity. The transverse insertion shaft is inserted into the circular insertion hole. The end of the transverse insertion shaft located inside the internal cavity is fixedly installed with the circular limiting block. The spring is fixedly installed between the inner wall of the internal cavity and the circular limiting block.

[0008] Preferably, an outer pull block is fixedly installed at one end of the transverse insertion shaft that extends to the outside of the circular insertion hole.

[0009] Preferably, the snap-fit ​​assembly includes a compression structure and two hinge components. The compression structure is used to compress the two hinge components to tilt towards opposite sides. The compression structure is connected to a circular limiting block.

[0010] Preferably, the hinge assembly includes two locking rods, and two rectangular cavities are opened at the end of the circular tube. The locking rods are hinged inside the rectangular cavities, and the end of the locking rod extending to the outside of the rectangular cavity is inclined and bent. Two rectangular slots are opened on the connecting circular block. The interior of the two rectangular slots is provided with an inner wall slot on one side opposite to each other. The bent end of the locking rod is engaged with the inner wall slot.

[0011] Preferably, the extrusion structure includes a circular connecting shaft, a conical protrusion, and two locking blocks. A circular groove is formed on the inner wall of the internal cavity. A circular connecting shaft is integrally formed on the circular limiting block at the position corresponding to the circular groove. A conical protrusion is integrally formed on the outer side of the circular connecting shaft. A connecting groove communicating with a rectangular cavity is formed on the inner wall of the circular groove. A locking block is slidably engaged inside the connecting groove. One end of the locking block extending into the rectangular cavity is attached to a locking rod.

[0012] Preferably, the circular connecting shaft has a cavity inside, and a magnetic rod is disposed inside the cavity.

[0013] Compared with the prior art, this utility model provides an anti-loosening self-locking helical spring connector, which has the following beneficial effects: Through the coordinated design of the spring-pulling component and the snap-fit ​​component, when the outer pulling block is released, the spring rebounds and drives the conical protrusion to squeeze the snap-fit ​​block, causing the snap-fit ​​rod to tilt to the opposite side and snap into the inner wall slot, forming a stable self-locking structure. This structure can effectively resist vibration, external impact and other working conditions, significantly improve the anti-loosening performance of the connection, and avoid the problem of easy loosening of traditional connectors.

[0014] The installation process is simple. Just pull the outer pull block to retract the snap-fit ​​component, insert it into the rectangular slot of the connecting round block, and then release it to complete the self-locking. No complicated tools or professional skills are required, which greatly reduces the difficulty and time cost of installation. It is especially suitable for scenarios where it is inconvenient to operate, such as in confined spaces or at heights.

[0015] The ingenious structural design utilizes the elastic potential energy of a spring and the mechanical compression principle of a conical protrusion to achieve automatic locking, eliminating the need for additional fasteners or welding steps, thus reducing the number of parts and material costs. Furthermore, disassembly is simple: just pull the outer pull block, and the magnetic rod attracts the locking block, causing the locking rod to retract, allowing for easy separation. This facilitates maintenance and reuse, enhancing the economy and practicality of the connector.

[0016] The bent design at the end of the snap-fit ​​rod, combined with the inner wall groove, increases the snap-fit ​​area and friction, further enhancing the reliability of the connection. It can adapt to the connection needs of different loads and environmental conditions in fields such as construction and machinery, thus expanding the application scenarios.

[0017] The magnetic rod is designed to attract the locking block when the outer pulling block is pulled, ensuring that the locking assembly retracts into place and preventing the locking block from accidentally squeezing the locking rod, making the installation process smoother. At the same time, it ensures that the locking assembly can be reset in time when disassembling, improving the stability and safety of the connector operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 for Figure 2 AA section view diagram; Figure 4 for Figure 3 A magnified view of part B in the diagram.

[0019] In the diagram: 1. Circular tube; 2. Connecting circular block; 3. Rectangular slot; 4. Inner wall slot; 5. Internal cavity; 6. Horizontal insertion shaft; 7. Circular limiting block; 8. Spring; 9. Outer pulling block; 10. Circular insertion hole; 11. Circular groove; 12. Circular connecting shaft; 13. Connecting groove; 14. Locking block; 15. Conical protrusion; 16. Magnetic rod; 17. Locking rod. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-4A self-locking anti-loosening spiral spring connector includes a circular tube 1 and a connecting circular block 2. A spring pulling assembly is provided inside the circular tube 1, and a snap-fit ​​assembly is provided at the end of the circular tube 1. The spring pulling assembly is used to drive the snap-fit ​​assembly to move to a mutually opposite side, and the snap-fit ​​assembly snaps into the connecting circular block 2. The connecting circular block 2 is pre-embedded in the wall. Then, the spring pulling assembly is pulled, and the snap-fit ​​assembly is inserted into the interior of the connecting circular block 2. Then, the spring pulling assembly is released, and the spring pulling assembly pushes the snap-fit ​​assembly to a relatively opposite side, and then the snap-fit ​​assembly snaps into the connecting circular block 2.

[0022] Furthermore, the spring-loaded snap-fit ​​assembly includes a transverse insertion shaft 6, a circular limiting block 7, and a spring 8. The circular tube 1 has an internal cavity 5 inside, and one end of the circular tube 1 has a circular insertion hole 10 communicating with the internal cavity 5. The transverse insertion shaft 6 is inserted into the circular insertion hole 10. The circular limiting block 7 is fixedly installed at one end of the transverse insertion shaft 6 inside the internal cavity 5. The spring 8 is fixedly installed between the inner wall of the internal cavity 5 and the circular limiting block 7.

[0023] Furthermore, an outer pull block 9 is fixedly installed at one end of the transverse insertion shaft 6 that extends to the outside of the circular insertion hole 10, which facilitates the pulling of the transverse insertion shaft 6.

[0024] Furthermore, the snap-fit ​​assembly includes a compression structure and two hinge assemblies. The compression structure is used to compress the two hinge assemblies to tilt towards opposite sides. The compression structure is connected to the circular limiting block 7.

[0025] Furthermore, the hinge assembly includes two locking rods 17. Two rectangular cavities are opened at the end of the circular tube 1. The locking rods 17 are hinged inside the rectangular cavities. The end of the locking rods 17 extending to the outside of the rectangular cavities is inclined and bent. Two rectangular slots 3 are opened on the connecting circular block 2. The inner wall slots 4 are opened on opposite sides of the two rectangular slots 3. The bent end of the locking rod 17 is engaged with the inner wall slot 4.

[0026] Furthermore, the extrusion structure includes a circular connecting shaft 12, a conical protrusion 15, and two locking blocks 14. A circular groove 11 is formed on the inner wall of the internal cavity 5. A circular connecting shaft 12 is integrally formed on the circular limiting block 7 corresponding to the position of the circular groove 11. A conical protrusion 15 is integrally formed on the outer side of the circular connecting shaft 12. A connecting groove 13 connecting to the rectangular cavity is formed on the inner wall of the circular groove 11. A locking block 14 is slidably engaged inside the connecting groove 13. One end of the locking block 14 extending into the rectangular cavity is attached to the locking rod 17. Pulling the outer pulling block 9 causes the transverse insertion shaft 6 to move laterally, and then the spring 8 retracts. Then, the circular connecting shaft 12 moves along with it. The end of the circular connecting shaft 12 without the tapered protrusion 15 fits into the locking block 14. At this time, the locking block 14 retracts into the interior of the connecting groove 13, and the locking rod 17 is inserted into the interior of the rectangular locking groove 3. Then, the outer pulling block 9 is released, the spring 8 returns, and the circular connecting shaft 12 returns to its original position. Then, the inclined surface of the tapered protrusion 15 presses against the locking block 14. One end of the locking block 14 extends into the interior of the rectangular cavity and then presses against the locking rod 17. The two locking rods 17 tilt to opposite sides, and then the bent end of the locking rod 17 engages with the interior of the inner wall locking groove 4, completing the connection.

[0027] Furthermore, the circular connecting shaft 12 has a cavity inside, and a magnetic rod 16 is installed inside the cavity. When the horizontal insertion shaft 6 is pulled horizontally, the conical protrusion 15 no longer fits against the locking block 14. At this time, the magnetic rod 16 will attract one end of the locking block 14, and the locking block 14 will no longer squeeze the locking rod 17.

[0028] Working principle: Pulling the outer pull block 9 causes the transverse insertion shaft 6 to move laterally. Then, the spring 8 retracts, and the circular connecting shaft 12 moves accordingly. The end of the circular connecting shaft 12 without the tapered protrusion 15 fits against the locking block 14. At this time, the locking block 14 retracts into the connecting groove 13, and the locking rod 17 is inserted into the rectangular groove 3. Then, the outer pull block 9 is released, the spring 8 rebounds, and the circular connecting shaft 12 returns to its original position. Then, the inclined surface of the tapered protrusion 15 presses against the locking block 14, and one end of the locking block 14 extends into the rectangular cavity and then presses against the locking rod 17. The two locking rods 17 tilt to opposite sides, and then the bent end of the locking rod 17 engages with the inner wall groove 4, completing the connection.

[0029] Structural Description: Circular tube 1: Serves as the main frame of the entire connector. Its interior contains the space required for the operation of the spring-pulling assembly and the snap-fit ​​assembly, such as the internal cavity 5. Two rectangular cavities are provided at the end for installing the snap-fit ​​assembly. One end also has a circular insertion hole 10 that communicates with the internal cavity 5, providing an installation channel for the transverse insertion shaft 6. It serves to support and accommodate the internal components and is the basic structure for realizing the connection function. Connecting circular block 2: used for pre-embedding into the base such as wall, it has two rectangular slots 3, and the two rectangular slots 3 have inner wall slots 4 on opposite sides. These slots are the key parts to cooperate with the snap-fit ​​assembly to achieve connection. By snapping with the snap-fit ​​rod 17, the circular tube 1 is firmly connected to the connecting circular block 2 pre-embedded in the wall. Rectangular slot 3: It is formed on the connecting circular block 2 and is used to accommodate the snap-fit ​​rod 17 during the installation process. It provides space for the snap-fit ​​rod 17 to be inserted into the connecting circular block 2 and is the part where the snap-fit ​​rod 17 and the connecting circular block 2 establish initial contact, laying the foundation for subsequent snap-fit ​​actions. Inner wall slot 4: Located inside the rectangular slot 3 on the connecting circular block 2, facing away from each other. When the bent end of the locking rod 17 is inserted into it, it can effectively restrict the movement of the locking rod 17 and prevent the connector from loosening. It is one of the key structures to realize the self-locking function. Internal cavity 5: Located inside the circular tube 1, it is the main space for the operation of the spring-pulling assembly and the extrusion structure. A circular groove 11 is provided on the inner wall of the internal cavity 5 for installing components such as the circular connecting shaft 12, providing space for the mechanical transmission of the entire connecting component. The transverse insertion shaft 6 is inserted into the circular insertion hole 10 at one end of the circular tube 1. One end is located in the internal cavity 5 and a circular limiting block 7 is fixedly installed thereon, while the other end extends to the outside of the circular insertion hole 10 and an outer pulling block 9 is fixedly installed thereon. By pulling the outer pulling block 9, the transverse insertion shaft 6 is moved, thereby driving the spring pulling assembly and the extrusion structure to move. It is a key transmission component for realizing the operation of the connector. Circular limiting block 7: It is fixedly installed at one end of the transverse insertion shaft 6 located in the internal cavity 5. Its function is to limit the movement range of the transverse insertion shaft 6. At the same time, a spring 8 is installed between it and the inner wall of the internal cavity 5 to participate in the action of the spring pulling assembly, providing support and limiting functions for the entire transmission process. Spring 8: Installed between the inner wall of the internal cavity 5 and the circular limiting block 7. When the transverse insertion shaft 6 is pulled, the spring 8 contracts and stores energy; after the transverse insertion shaft 6 is released, the spring 8 rebounds and releases energy, pushing the circular limiting block 7 and the transverse insertion shaft 6 to reset, providing power for the snapping action of the snapping assembly. Outer pull block 9: Fixedly installed at one end of the transverse insertion shaft 6 extending to the outer side of the circular insertion hole 10. By providing a convenient part for applying force, it makes it easier for the operator to pull the transverse insertion shaft 6, making the whole operation process more convenient and labor-saving. Circular insertion hole 10: It is opened at one end of the circular tube 1 and communicates with the internal cavity 5. It provides a channel for the installation and movement of the transverse insertion shaft 6, ensuring that the transverse insertion shaft 6 can move smoothly in the circular tube 1 and realize its transmission function. Circular groove 11: It is formed on the inner wall of the internal cavity 5 and is used to install the circular connecting shaft 12. It provides positioning and installation space for the circular connecting shaft 12, so that the circular connecting shaft 12 can move and transmit stably within the internal cavity 5. Circular connecting shaft 12: integrally formed at the position of the circular groove 11 corresponding to the circular limiting block 7, with a conical protrusion 15 integrally formed on its outer side, and a cavity set inside and a magnetic rod 16 installed. During the operation of the connector, it moves with the circular limiting block 7, and controls the movement of the locking block 14 through the conical protrusion 15 and the magnetic rod 16, thereby driving the locking rod 17 to complete the locking and unlocking actions. Connecting groove 13: It is formed on the inner wall of the circular groove 11 and connects to the rectangular cavity. It is used to install the locking block 14, so that the locking block 14 can slide in the connecting groove 13 to achieve contact and separation with the locking rod 17, thereby controlling the movement of the locking rod 17. Locking block 14: It slides and engages inside the connecting groove 13, with one end extending into the rectangular cavity to fit the locking rod 17. Under the action of the circular connecting shaft 12, the locking rod 17 is squeezed or released by sliding within the connecting groove 13, which is the key component for realizing the action control of the locking rod 17. Conical protrusion 15: integrally formed on the outside of the circular connecting shaft 12. When the circular connecting shaft 12 is reset, its inclined surface presses against the locking block 14, causing the locking block 14 to move into the rectangular cavity, thereby pressing against the locking rod 17 and pushing the locking rod 17 to tilt to the opposite side, thus completing the locking action. Magnetic rod 16: Set inside the cavity of the circular connecting shaft 12, when the transverse insertion shaft 6 is pulled and the conical protrusion 15 is no longer in contact with the locking block 14, the magnetic rod 16 attracts one end of the locking block 14, so that the locking block 14 no longer squeezes the locking rod 17, making it easy for the locking rod 17 to retract and realize the unlocking function of the connector. The locking rod 17 is hinged inside the rectangular cavity at the end of the circular tube 1, with one end extending to the outside of the rectangular cavity in an inclined, bent shape. Under the pressure of the locking block 14, the two locking rods 17 tilt to opposite sides, and their bent ends engage with the groove 4 on the inner wall of the connecting circular block 2, achieving a stable connection between the circular tube 1 and the connecting circular block 2. This is the core actuator for realizing the self-locking function.

[0030] 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 self-locking anti-loosening helical spring connector, characterized in that, It includes a circular tube (1) and a connecting circular block (2). The circular tube (1) is provided with a spring pulling assembly inside and a snap-fit ​​assembly is provided at the end of the circular tube (1). The spring pulling assembly is used to drive the snap-fit ​​assembly to move to the opposite side. The snap-fit ​​assembly snaps into the connecting circular block (2).

2. A self-locking helical spring connector according to claim 1, wherein: The spring snap-fit ​​assembly includes a transverse insertion shaft (6), a circular limiting block (7), and a spring (8). The circular tube (1) has an internal cavity (5) inside. One end of the circular tube (1) has a circular insertion hole (10) communicating with the internal cavity (5). The transverse insertion shaft (6) is inserted into the circular insertion hole (10). The circular limiting block (7) is fixedly installed at one end of the transverse insertion shaft (6) inside the internal cavity (5). The spring (8) is fixedly installed between the inner wall of the internal cavity (5) and the circular limiting block (7).

3. A self-locking helical spring connector according to claim 2, wherein: An outer pull block (9) is fixedly installed at one end of the transverse insertion shaft (6) extending to the outside of the circular insertion hole (10).

4. The anti-loosening self-locking helical spring connector according to claim 2, characterized in that: The snap-fit ​​assembly includes a compression structure and two hinge components. The compression structure is used to compress the two hinge components to tilt to opposite sides. The compression structure is connected to a circular limiting block (7).

5. The anti-loosening self-locking helical spring connector according to claim 4, characterized in that: The hinge assembly includes two locking rods (17). Two rectangular cavities are opened at the end of the circular tube (1). The locking rods (17) are hinged inside the rectangular cavities. The end of the locking rods (17) extending to the outside of the rectangular cavities is inclined and bent. Two rectangular slots (3) are opened on the connecting circular block (2). The two rectangular slots (3) are provided with inner wall slots (4) on opposite sides. The bent end of the locking rod (17) is engaged with the inner wall slot (4).

6. The anti-loosening self-locking helical spring connector according to claim 5, characterized in that: The extrusion structure includes a circular connecting shaft (12), a conical protrusion (15), and two locking blocks (14). A circular groove (11) is provided on the inner wall of the internal cavity (5). A circular connecting shaft (12) is integrally formed on the circular limiting block (7) corresponding to the position of the circular groove (11). A conical protrusion (15) is integrally formed on the outer side of the circular connecting shaft (12). A connecting groove (13) connecting the rectangular cavity is provided on the inner wall of the circular groove (11). A locking block (14) is slidably engaged inside the connecting groove (13). One end of the locking block (14) extending into the rectangular cavity is attached to the locking rod (17).

7. The anti-loosening self-locking helical spring connector according to claim 6, characterized in that: The circular connecting shaft (12) has a cavity inside, and a magnetic rod (16) is installed inside the cavity.

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