Anti-loose check screw
By designing structures such as ring blocks, nuts, clamping plates in the screws, and using the coordination of limit blocks and chutes, the screws are prevented from loosening and reverse, solving the problem of loosening caused by vibration of existing screws, and improving service life and stability.
Patent Information
- Application Number
- CN202422052261.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The existing screws are loose due to vibration in the working environment and cannot effectively prevent loosening or reversal removal.
An anti-loosening check screw is designed. By setting a structure such as an annular block, a nut, a clamp plate, a movable rod and a spring on the screw, the coupling of the limit block, a limit groove and a chute is used to achieve forward locking and reverse prevention of the nut.
Effectively prevent the screw from loosening and reverse removal, improving the service life and stability of the screw.
Smart Images
Figure CN222977202U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of screws, in particular to a loosening-proof check screw. Background Technique
[0002] A screw is a tool that uses the physical and mathematical principles of the inclined plane circular rotation and friction of an object to gradually fasten the machine parts of an implement. Screws are a common invention in people's production and life. Screws are indispensable industrial necessities in daily life;
[0003] As a connecting piece in daily work, screws often become loose due to vibrations generated in the working environment. Existing screws have problems such as inability to prevent loosening and check or poor anti-loosening effect when in use. For this reason, we propose a loosening-proof check screw. Content of the Utility Model
[0004] The technical problem solved by the utility model is to overcome the defects of the prior art and provide a loosening-proof check screw.
[0005] To achieve the above object, the utility model provides the following technical scheme:
[0006] A loosening-proof check screw, including a screw rod, an annular block is sleeved on the screw rod near the middle, a nut is threadedly connected to the screw rod near the right side, an annular groove matching the nut is opened on the right wall of the annular block, a plurality of uniformly distributed inclined grooves are opened on the outer wall of the nut near the left side, a movable groove is opened at the top of the inner cavity of the annular groove, a clamping plate is arranged in the movable groove, a movable rod is fixedly connected to the top of the clamping plate, a through hole matching the movable rod is opened at the top of the inner cavity of the movable groove, the top end of the movable rod passes through the through hole and extends above the annular block, and is fixedly connected to a circular block.
[0007] Preferably, a hexagonal groove is opened on the left wall of the screw rod.
[0008] Preferably, an annular rubber pad is fixedly connected to the left wall of the annular block.
[0009] Preferably, a first limiting block is fixedly connected to the top of the inner cavity of the annular block near the left side, and a limiting groove matching the first limiting block is opened at the top of the screw rod near the right side.
[0010] Preferably, second limiting blocks are fixedly connected to the upper portions close to the left and right side walls of the clamping plate, limiting grooves matching the second limiting blocks are formed in the inner walls of the left and right sides of the movable groove, limiting holes are formed in the tops of the second limiting blocks, limiting rods are arranged in the limiting holes, the top and bottom ends of the limiting rods are fixedly connected to the top and bottom of the inner cavity of the limiting groove respectively, springs are sleeved on the upper portions close to the limiting rods, and the top and bottom ends of the springs are fixedly connected to the top of the inner cavity of the limiting groove and the top of the second limiting block respectively.
[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0012] In this technical solution, through the mutual cooperation among the spring, the second limiting block and the limiting rod, the clamping plate can be clamped into the corresponding inclined groove on the nut through the compression force of the spring, so that when the nut is clamped into the annular block, it can only rotate forward and cannot rotate backward. At the same time, through the mutual cooperation between the first limiting block and the limiting groove, the positioning of the annular block is realized so that it cannot rotate, and then when the annular block and the nut are used in cooperation, the nut cannot be removed by reverse rotation, thus realizing a good anti-loosening effect of the device; through the arrangement of the hexagonal groove, when the screw rod rotates, various tools such as a socket wrench can be used for operation, improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the utility model;
[0014] Figure 2 is a three-dimensional view of the nut of the utility model;
[0015] Figure 3 is Figure 1 an enlarged view of part A in
[0016] Figure 4 is Figure 3 an enlarged view of part B in
[0017] Reference numerals in the drawings: 1, screw rod; 2, annular block; 3, annular rubber pad; 4, hexagonal groove; 5, first limiting block; 6, nut; 7, circular block; 8, movable rod; 9, clamping plate; 10, spring; 11, limiting rod; 12, second limiting block. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0019] Please refer to Figures 1-4 , the present utility model provides a technical solution: a loosening-preventing and check-valve screw, including a screw rod 1, a hexagonal groove 4 is opened on the left wall of the screw rod 1, an annular block 2 is sleeved on the screw rod 1 near the middle, and an annular rubber pad 3 is fixedly connected to the left wall of the annular block 2., a nut 6 is threadedly connected to the screw rod 1 near the right side, an annular groove matching with the nut 6 is opened on the right wall of the annular block 2, a plurality of uniformly distributed inclined grooves are opened on the outer wall of the nut 6 near the left side, a movable groove is opened at the top of the inner cavity of the annular groove, a clamping plate 9 is arranged in the movable groove, second limiting blocks 12 are fixedly connected to the upper parts of the left and right side walls of the clamping plate 9, and limiting grooves matching with the second limiting blocks 12 are opened on the inner walls of the left and right sides of the movable groove, a limiting hole is opened at the top of the second limiting block 12, a limiting rod 11 is arranged in the limiting hole, the top end and the bottom end of the limiting rod 11 are respectively fixedly connected to the top and the bottom of the inner cavity of the limiting groove, a spring 10 is sleeved on the limiting rod 11 near the upper part, the top end and the bottom end of the spring 10 are respectively fixedly connected to the top of the inner cavity of the limiting groove and the top of the second limiting block 12, a first limiting block 5 is fixedly connected to the top of the inner cavity of the annular block 2 near the left side, and a limiting groove matching with the first limiting block 5 is opened at the top of the screw rod 1 near the right side, a movable rod 8 is fixedly connected to the top of the clamping plate 9, a through hole matching with the movable rod 8 is opened at the top of the inner cavity of the movable groove, the top end of the movable rod 8 passes through the through hole and extends above the annular block 2, and is fixedly connected to a circular block 7. Through the mutual cooperation among the spring 10, the second limiting block 12 and the limiting rod 11, the clamping plate 9 can be clamped into the corresponding inclined groove on the nut 6 by the compression force of the spring 10, so that when the nut 6 is clamped into the annular block 2, it can only rotate forward and cannot rotate backward. At the same time, through the mutual cooperation between the first limiting block 5 and the limiting groove, the positioning of the annular block 2 is realized so that it cannot rotate, and then when the annular block 2 and the nut 6 are used in cooperation, the nut 6 cannot be removed by reverse rotation, thus realizing a good loosening-preventing effect of the device; through the setting of the hexagonal groove 4, when the screw rod 1 rotates, various tools such as a socket wrench can be used for operation, which improves its service life.
[0020] Working principle: When in use, first insert the nut 6 into the annular groove on the right side of the annular block 2, align the first limit block 5 on the inner wall of the annular block 2 with the limit groove at the top of the screw 1, and screw in the nut 6 to connect. During the screwing-in process of the nut 6, the clamping plate 9 is continuously vibrated repeatedly in the up and down directions under the action of the inclined groove. Its working process is similar to a ratchet structure. After the nut 6 is tightened, when the nut 6 needs to be reversed, it must be reversed at the same time as the annular block 2 due to the action of the clamping plate 9, and the annular block 2 cannot rotate due to the action of the first limit block 5, so that the nut 6 cannot be reversed and removed, thereby achieving a good anti-loosening effect. When it needs to be removed, an external tool such as a gasket can be used to lift the circular block 7 upward so that the clamping plate 9 moves upward and disengages from the inclined groove. At this time, the nut 6 can be reversed to remove.
[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A non-loosening and non-return screw, comprising a screw rod (1), characterized in that: An annular block (2) is sleeved on the screw rod (1) near the middle, a nut (6) is threadedly connected to the screw rod (1) near the right side, an annular groove matching the nut (6) is provided on the right wall of the annular block (2), a plurality of evenly distributed inclined grooves are provided on the outer wall of the nut (6) near the left side, a movable groove is provided on the top of the inner cavity of the annular groove, a clamping plate (9) is provided in the movable groove, a movable rod (8) is fixedly connected to the top of the clamping plate (9), a through hole matching the movable rod (8) is provided on the top of the inner cavity of the movable groove, the top of the movable rod (8) extends through the through hole to the top of the annular block (2), and is fixedly connected to a circular block (7).
2. The anti-loosening and anti-return screw according to claim 1, characterized in that: The left wall of the screw rod (1) is provided with a hexagonal groove (4).
3. The anti-loosening and anti-return screw according to claim 1, characterized in that: An annular rubber pad (3) is fixedly connected to the left wall of the annular block (2).
4. The anti-loosening and anti-return screw according to claim 1, characterized in that: A first limiting block (5) is fixedly connected to the top of the inner cavity of the annular block (2) near the left side, and a limiting groove matching the first limiting block (5) is provided at the top of the screw rod (1) near the right side.
5. The anti-loosening and anti-return screw according to claim 1, characterized in that: The left and right side walls of the clamping plate (9) are fixedly connected to a second limit block (12) near the top, and the left and right inner walls of the movable groove are provided with limit grooves matching the second limit block (12). The top of the second limit block (12) is provided with a limit hole, and a limit rod (11) is arranged in the limit hole. The top and bottom ends of the limit rod (11) are respectively fixedly connected to the top and bottom of the inner cavity of the limit groove. The limit rod (11) is sleeved with a spring (10) near the top, and the top and bottom ends of the spring (10) are respectively fixedly connected to the top of the inner cavity of the limit groove and the top of the second limit block (12).