Stable anti-falling screw structure

Abstract

The utility model relates to the technical field of anti-falling screws, and discloses a stable anti-falling screw structure which comprises a connecting piece and an arranged screw body, fixing side plates are installed in the centers of the two sides of the top of the connecting piece, and a limiting hole is formed in the center of the outer side of the connecting piece. The guide rods are in inserted connection with the fixed side plates, and limiting blocks are mounted at the upper and lower parts of the outer sides of the surfaces of the guide rods; the center of the surface of the guide rod is provided with a fixed circular plate, and the inner end of the guide rod is provided with a stabilizing head. According to the stable anti-falling screw structure, after the screw body is installed on the connecting piece, the guide rod drives the stable head to be inserted into the screw body along the fixing side plate under the action of the reset spring, and when the stable head is separated from the screw body, the guide rod can be rotated on the fixing side plate and pulled outwards along the fixing side plate; when the limiting block moves to the outer side of the limiting hole to rotate, the guide rod enables the limiting block to be tightly attached to the fixed side plate under the action of the reset spring.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-loosening screws, in particular to a stable anti-loosening screw structure. Background Art

[0002] Anti-loosening screws, also known as non-loosening screws or anti-dropping screws, are screws with special structures designed to prevent self-loosening and dropping during use, thereby improving safety and reliability. Anti-loosening screws can be divided into various types according to their structures and uses, such as slotted pan head non-loosening screws, hexagon head non-loosening screws, wave head non-loosening screws, and slotted countersunk head non-loosening screws. These different types of anti-loosening screws are suitable for different connection requirements and application scenarios. Due to their excellent anti-loosening performance, anti-loosening screws are widely used in various fields, such as engineering machinery, high-tech fields, and construction projects, etc.

[0003] Common anti-loosening screws are usually composed of components such as a head, a thread, a tapered bottom, and a spring ring. First, place the anti-loosening screw in the installation hole of the connecting piece, and use corresponding tools, such as a screwdriver, a wrench, etc. for tightening operations.

[0004] For traditional anti-loosening screws, after being thread-connected to the connecting piece, when the connecting piece vibrates due to external factors, such as collision or impact, etc., the anti-loosening screw will be subjected to additional forces and loosen, making the connection of the anti-loosening screw unstable. To solve the above problems, some anti-loosening screws add elastic elements, such as spring washers, elastic gaskets, etc. and nuts. First, install the elastic element on the surface of the anti-loosening screw and install it with the connecting piece, and then thread-connect the nut from the bottom end of the anti-loosening screw to increase the pre-tightening force, friction, and shock absorption of the anti-loosening screw, thereby making the connection of the anti-loosening screw more stable. However, in this way, due to the relatively small elastic force provided by the spring washer or elastic gasket after long-term use, the anti-loosening effect is limited, and it is easy to age and deform, resulting in the loosening of the connection relationship, and at the same time, it will cause difficulties in maintenance and disassembly. Therefore, a stable anti-loosening screw structure is proposed. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a stable anti-loosening screw structure to solve the technical problems that the anti-loosening effect of the elastic element is limited, it is easy to age and deform, and it is not convenient for maintenance and disassembly.

[0007] (2) Technical Solutions

[0008] To achieve the above purpose, the utility model provides the following technical solutions: A stable anti-loosening screw structure, comprising:

[0009] A connecting piece, and a screw body arranged at the center of the top of the connecting piece. Fixed side plates are installed at the centers of both sides of the top of the connecting piece, and a limiting hole is opened at the center of the outer side of the fixed side plate;

[0010] A guide rod is arranged directly above the centers of both sides of the top of the connecting piece and is inserted and connected with the fixed side plate. Limiting blocks are installed on the upper and lower parts of the outer surface of the guide rod and correspond to the shape and size of the limiting hole;

[0011] A return spring is arranged on one side of the center of the surface of the guide rod. A fixed circular plate is installed at the center of the surface of the guide rod. The two ends of the return spring are respectively in contact with the limiting block and the fixed circular plate, and a stabilizing head is installed at the inner end of the guide rod. After the screw body is installed on the connecting piece, the guide rod drives the stabilizing head to be inserted into the inside of the screw body along the fixed side plate under the action of the return spring. When separating the stabilizing head from the screw body, the guide rod can be rotated on the fixed side plate to make the limiting block correspond to the limiting hole, and the guide rod is pulled out along the fixed side plate. When the limiting block moves to the outside of the limiting hole and rotates, the guide rod, under the action of the return spring, makes the limiting block closely fit with the outer side of the fixed side plate. On the one hand, the stabilizing head can be inserted into the screw body to connect the fixed side plate with the screw body, improving the connection stability between the connecting piece and the screw body, and avoiding the problems of limited anti-loosening effect, easy aging and deformation caused by using elastic elements; on the other hand, when removing the screw body from the connecting piece, the guide rod can be fixed on the fixed side plate for connection, thus avoiding the influence of the stabilizing head on the removal and making the removal of the screw body more convenient.

[0012] Preferably, an annular screw block is inserted and connected at the center position of the inner cavity top of the connecting piece, and a thread is opened at the center of the inner wall of the annular screw block and is threadedly connected with the screw body. The annular screw block can be disassembled and assembled on the connecting piece. At the same time, the screw body is threadedly connected to the annular screw block, and the annular screw block can be replaced according to the use requirements of the connecting piece, so as to be applicable to different models of anti-loosening screws.

[0013] Preferably, side fixing plates are installed at the center positions of the front and rear ends of the top of the annular screw block, and positioning side plates are additionally provided at the center positions of the front and back surfaces of the annular screw block. The annular screw block can be rotated and lifted by driving the side fixing plates.

[0014] Preferably, positioning ring grooves are opened around the center position of the inner cavity of the connecting piece, and inlets and outlets are opened at the centers of both sides of the top end of the positioning ring groove, which penetrate through the inner wall of the connecting piece and extend upward and correspond to the positioning side plates. When the annular screw block is connected with the connecting piece, the positioning side plate can be aligned with the inlet and outlet and lowered into the inside of the positioning ring groove to rotate, so that the positioning side plate is misaligned with the inlet and outlet.

[0015] Preferably, extrusion springs are added to the front and rear ends of the center of the top of the connecting piece, and the overall extrusion spring is designed in an arc shape. It can be connected through the extrusion spring.

[0016] Preferably, the outer end of the extrusion spring is connected to the top of the connecting piece, and a connecting column is installed at the inner end of the extrusion spring and corresponds to the side fixing plate. The extrusion spring corresponds to the corresponding side fixing plate through the connecting column, so as to connect the annular screw block and the connecting piece, and ensure the stability of the annular screw block.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a stable anti-loosening screw structure, which has the following

[0019] Beneficial effects:

[0020] For this stable anti-loosening screw structure, after the screw body is installed on the connecting piece, under the action of the return spring, the guiding rod drives the stabilizing head to insert into the screw body along the fixed side plate. The stabilizing head can be inserted into the screw body to connect the fixed side plate and the screw body, improving the connection stability between the connecting piece and the screw body, avoiding the limited anti-loosening effect, easy aging and deformation caused by using elastic elements. When separating the stabilizing head from the screw body, the guiding rod can be rotated on the fixed side plate to make the limiting block correspond to the limiting hole, and the guiding rod is pulled out along the fixed side plate. When the limiting block moves to the outside of the limiting hole and rotates, under the action of the return spring, the limiting block closely fits with the outside of the fixed side plate. When removing the screw body from the connecting piece, the guiding rod can be fixed to the fixed side plate for connection, thus avoiding the influence of the stabilizing head on the removal and making the removal of the screw body more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 is a schematic diagram of the connecting piece and its connection structure of the utility model;

[0023] Figure 3 is a schematic diagram of the guiding rod and its connection structure of the utility model;

[0024] Figure 4 is a schematic diagram of the separation structure of the connecting piece and the annular screw block of the utility model.

[0025] In the figure: 1. Connecting piece; 2. Screw main body; 3. Fixed side plate; 4. Limit hole; 5. Guide rod; 6. Limit block; 7. Return spring; 8. Fixed circular plate; 9. Stabilizing head; 10. Annular screw block; 11. Side fixing plate; 12. Positioning side plate; 13. Positioning ring groove; 14. Inlet and outlet; 15. Extrusion spring; 16. Connecting column. Detailed implementation manner

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] The present invention provides a technical solution, a stable anti-loosening screw structure, including: Please refer to Figure 1 , a connecting piece 1, and a screw main body 2 provided at the center of the top of the connecting piece 1, and fixed side plates 3 are installed at the centers of both sides of the top of the connecting piece 1, and limit holes 4 are opened at the centers of the outer sides of the fixed side plates 3;

[0028] Please refer to Figure 3 , a guide rod 5, which is provided directly above the centers of both sides of the top of the connecting piece 1 and is inserted and connected with the fixed side plate 3, and limit blocks 6 are installed on the upper and lower parts of the outer surface of the guide rod 5 and correspond to the shape and size of the limit hole 4;

[0029] A return spring 7 is provided on one side of the center of the surface of the guide rod 5, and a fixed circular plate 8 is installed at the center of the surface of the guide rod 5. The two ends of the return spring 7 are respectively in contact with the limit block 6 and the fixed circular plate 8, and a stabilizing head 9 is installed at the inner end of the guide rod 5. After the screw main body 2 is installed on the connecting piece 1, the guide rod 5 drives the stabilizing head 9 to be inserted into the inside of the screw main body 2 along the fixed side plate 3 under the action of the return spring 7. When separating the stabilizing head 9 from the screw main body 2, the guide rod 5 can be rotated on the fixed side plate 3 to make the limit block 6 correspond to the limit hole 4, and the guide rod 5 is pulled out along the fixed side plate 3. When the limit block 6 moves to the outside of the limit hole 4 and rotates, the guide rod 5 is under the action of the return spring 7, so that the limit block 6 is closely attached to the outer side of the fixed side plate 3. On the one hand, the fixed side plate 3 can be connected to the screw main body 2 by inserting the stabilizing head 9 into the screw main body 2, which improves the connection stability between the connecting piece 1 and the screw main body 2, and avoids the limited anti-loosening effect, easy aging and deformation phenomena caused by using elastic elements; on the other hand, when the screw main body 2 is removed from the connecting piece 1, the guide rod 5 can be fixed to the fixed side plate 3 for connection, thereby avoiding the influence of the stabilizing head 9 on the removal and making the removal of the screw main body 2 more convenient.

[0030] Please refer to Figure 2 , a ring-shaped screw block 10 is inserted and connected at the center of the top of the inner cavity of the connecting member 1, and a thread is provided at the center of the inner wall of the ring-shaped screw block 10, which is threadedly connected to the screw body 2. The ring-shaped screw block 10 can be disassembled and assembled on the connecting member 1. At the same time, the screw body 2 is threadedly connected to the ring-shaped screw block 10. The ring-shaped screw block 10 can be replaced according to the usage requirements of the connecting member 1, so as to be applicable to anti-loosening screws of different models.

[0031] Please refer to Figure 4 , side fixing plates 11 are installed at the center positions of the front and rear ends of the top of the ring-shaped screw block 10, and positioning side plates 12 are additionally provided at the center positions of the front and back surfaces of the ring-shaped screw block 10. The ring-shaped screw block 10 can be rotated and lifted through the side fixing plates 11. Positioning ring grooves 13 are provided around the center position of the inner cavity of the connecting member 1, and inlets and outlets 14 are provided at the center positions of both sides of the top end of the positioning ring grooves 13, which penetrate through the inner wall of the connecting member 1 and extend upward, corresponding to the positioning side plates 12. When the ring-shaped screw block 10 is connected to the connecting member 1, the positioning side plates 12 can be aligned with the inlets and outlets 14 and lowered into the positioning ring grooves 13 to rotate, so that the positioning side plates 12 are misaligned with the inlets and outlets 14. Extrusion springs 15 are additionally provided at the center positions of the front and rear ends of the top of the connecting member 1, and the overall shape of the extrusion springs 15 is arc-shaped. They can be correspondingly connected through the extrusion springs 15. The outer ends of the extrusion springs 15 are connected to the top of the connecting member 1, and connecting columns 16 are installed at the inner ends of the extrusion springs 15, corresponding to the side fixing plates 11. The extrusion springs 15 correspond to the corresponding side fixing plates 11 through the connecting columns 16, thereby connecting the ring-shaped screw block 10 and the connecting member 1 and ensuring the stability of the ring-shaped screw block 10.

[0032] In this solution: After the screw body 2 is installed on the connecting member 1, under the action of the return spring 7, the guide rod 5 drives the stabilizing head 9 to insert into the screw body 2 along the fixed side plate 3. When separating the stabilizing head 9 from the screw body 2, the guide rod 5 can be rotated on the fixed side plate 3 to make the limiting block 6 correspond to the limiting hole 4, and the guide rod 5 is pulled outward along the fixed side plate 3. When the limiting block 6 moves to the outside of the limiting hole 4 and rotates, under the action of the return spring 7, the limiting block 6 is closely attached to the outside of the fixed side plate 3. When the ring-shaped screw block 10 is connected to the connecting member 1, the positioning side plates 12 can be aligned with the inlets and outlets 14 and lowered into the positioning ring grooves 13 to rotate, so that the positioning side plates 12 are misaligned with the inlets and outlets 14, and the extrusion springs 15 correspond to the corresponding side fixing plates 11 through the connecting columns 16.

[0033] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable anti-drop screw structure, characterized in that: include: A connecting piece (1), and a screw body (2) arranged at the center of the top of the connecting piece (1), and fixed side plates (3) are installed at the centers of both sides of the top of the connecting piece (1), and a limit hole (4) is opened at the center of the outer side of the fixed side plate (3); a guide rod (5) is arranged just above the centers of both sides of the top of the connecting piece (1), and is inserted and connected between the fixed side plates (3), and limit blocks (6) are installed at the upper and lower parts of the outer side of the surface of the guide rod (5), and the shape and size of the limit hole (4) correspond; a reset spring (7) is arranged on one side of the center of the surface of the guide rod (5), and a fixed circular plate (8) is installed at the center of the surface of the guide rod (5), the two ends of the reset spring (7) are respectively in contact with the limit block (6) and the fixed circular plate (8), and a stabilizing head (9) is installed at the inner end of the guide rod (5).

2. A stable anti-drop screw structure according to claim 1, characterized in that: An annular screw block (10) is inserted and connected at the center of the top of the inner cavity of the connecting piece (1), and a thread is provided at the center of the inner wall of the annular screw block (10) and is threadedly connected to the screw body (2).

3. A stable anti-drop screw structure according to claim 2, characterized in that: Side fixing plates (11) are installed at the center positions of the front and rear ends of the top of the annular screw block (10), and positioning side plates (12) are additionally provided at the center positions of the front and back sides of the annular screw block (10).

4. A stable anti-drop screw structure according to claim 3, characterized in that: A positioning annular groove (13) is provided around the center of the inner cavity of the connecting piece (1), and an inlet and outlet (14) are provided at the center of both sides of the top of the positioning annular groove (13), penetrating through the inner wall of the connecting piece (1) and extending upwards, corresponding to the positioning side plate (12).

5. A stable anti-drop screw structure according to claim 4, characterized in that: A compression spring (15) is provided at the front and rear ends of the top center of the connecting piece (1), and the compression spring (15) is designed to be arc-shaped as a whole.

6. A stable anti-drop screw structure according to claim 5, characterized in that: The outer end of the extrusion spring (15) is connected to the top of the connecting piece (1), and the inner end of the extrusion spring (15) is provided with a connecting column (16) corresponding to the side fixing plate (11).

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