Anti-falling self-tapping screw
By introducing an anti-loosening structure into the self-tapping screw, including an inner nut, an anti-slip flat washer, and a left-handed hexagonal nut, the problem of screw loosening in high-vibration environments is solved, achieving higher stability and safety.
Patent Information
- Application Number
- CN202520563348.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing self-tapping screws are prone to loosening and coming off in high-vibration or uneven working environments, affecting their functionality.
The design incorporates an anti-slip structure, including an inner nut, an anti-slip flat pad, an anti-slip spring pad, and a left-hand hexagonal nut, which enhances the friction of the contact surface and provides a cushioning effect.
It improves the durability and stability of screws, reduces maintenance costs, and enhances the safety of connections and the overall reliability of assembly.
Smart Images
Figure CN223868338U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of self-tapping screw technology, specifically a self-tapping screw that prevents it from falling off. Background Technology
[0002] Self-tapping screws are used to connect metallic and non-metallic materials. They are characterized by pointed tips and large thread pitch, which allows the materials to be engaged and connected by their own threads when inserted into pre-made holes or when directly connected to non-metallic drilled holes, thus eliminating the need for tapping.
[0003] While current self-tapping screws can achieve rapid assembly, they can loosen and come off in high-vibration or uneven working environments, thus affecting their functionality. Therefore, a self-tapping screw designed to prevent loosening is proposed to address the aforementioned problems. Utility Model Content
[0004] In view of the shortcomings of the existing technology, this utility model provides a self-tapping screw that prevents it from falling off. It has the advantages of improving the reliability of the overall assembly and solves the problem that the screw will loosen and come out in high vibration or uneven working environments, thus affecting the use of the function.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A self-tapping screw designed to prevent detachment includes a screw body, wherein the outer wall of the screw body is provided with an anti-detachment structure;
[0007] The anti-loosening structure includes an inner nut fixedly installed on the outer wall of the top of the screw body, an anti-slip flat washer slidably connected to the outer peripheral wall of the screw body, an anti-slip spring washer slidably connected to the outer peripheral wall of the screw body, and a left-handed hexagonal nut threadedly connected to the outer peripheral wall of the inner nut.
[0008] Furthermore, both the anti-slip flat pad and the anti-slip spring pad have through holes inside, and the screw body is slidably connected inside the through holes and is of a suitable size.
[0009] Furthermore, the anti-slip spring pad is movably mounted on top of the anti-slip flat pad, and the left-hand hexagonal nut is movably mounted on top of the anti-slip spring pad.
[0010] Furthermore, the outer peripheral wall of the inner nut is provided with external threads, and the left-hand regular hexagonal nut is threadedly connected to the external threads.
[0011] Furthermore, the anti-slip pad is movably installed at the bottom of the inner nut.
[0012] Compared with the prior art, this utility model provides a self-tapping screw that prevents it from falling off, and has the following characteristics:
[0013] Beneficial effects:
[0014] This anti-loosening self-tapping screw, by incorporating anti-slip flat pads, anti-slip spring pads, and a left-hand hexagonal nut in its design, enhances the friction between the contact surfaces, increases the screw's durability, and also acts as a buffer to prevent the screw from falling off during use, reducing maintenance costs, improving the overall assembly reliability, and effectively enhancing the safety and stability of the connection. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the anti-slip flat pad and anti-slip spring pad of this utility model.
[0017] In the picture: 1. Screw body; 2. Inner nut; 3. Anti-slip flat washer; 4. Anti-slip spring washer; 5. Left-handed hexagonal nut; 6. Object being pierced. Detailed Implementation
[0018] 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.
[0019] Please see Figures 1 to 2 The self-tapping screw in this embodiment is designed to prevent detachment and includes a screw body 1, the outer wall of which is provided with an anti-detachment structure.
[0020] The anti-loosening structure includes an inner nut 2 fixedly installed on the top outer wall of the screw body 1, an anti-slip flat pad 3 slidably connected to the outer peripheral wall of the screw body 1, an anti-slip spring pad 4 slidably connected to the outer peripheral wall of the screw body 1, and an anti-slip spring pad 4 movably installed at the bottom of the inner nut 2. Both the anti-slip flat pad 3 and the anti-slip spring pad 4 have through holes inside, and the screw body 1 is slidably connected inside the through holes and the sizes are compatible.
[0021] It should be noted that this facilitates the installation of the anti-slip flat pad 3 and the anti-slip spring pad 4 on the bottom of the inner nut 2.
[0022] The outer peripheral wall of the inner nut 2 is threaded with a left-handed hexagonal nut 5. The anti-slip spring pad 4 is movably installed on the top of the anti-slip flat pad 3. The left-handed hexagonal nut 5 is movably installed on the top of the anti-slip spring pad 4. The outer peripheral wall of the inner nut 2 is provided with external threads, and the left-handed hexagonal nut 5 is threadedly connected to the external threads.
[0023] It should be noted that this improves the safety and stability of screw body 1 during installation.
[0024] It should be noted that the bottom of the anti-slip flat pad 3 is provided with the object to be penetrated 6, and the screw body 1 is threaded into the inside of the object to be penetrated 6.
[0025] The working principle of the above embodiments is as follows:
[0026] When connecting and fixing the object 6, first put the anti-slip flat pad 3 on the outer wall of the screw body 1, and then put the anti-slip spring pad 4 on to buffer and prevent the screw body 1 from falling off during use. After the screwdriver is driven into the target material, the left-hand hexagonal nut 5 is threaded onto the outer peripheral wall of the screw body 1 and tightened, thereby effectively improving the safety and stability of the connection.
[0027] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.
[0028] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[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-tapping screw designed to prevent detachment, comprising a screw body (1), characterized in that: The outer wall of the screw body (1) is provided with an anti-loosening structure; The anti-loosening structure includes an inner nut (2) fixedly installed on the top outer wall of the screw body (1), an anti-slip flat washer (3) slidably connected to the outer peripheral wall of the screw body (1), an anti-slip spring washer (4) slidably connected to the outer peripheral wall of the screw body (1), and a left-handed regular hexagonal nut (5) threadedly connected to the outer peripheral wall of the inner nut (2).
2. The anti-loosening self-tapping screw according to claim 1, characterized in that: Both the anti-slip flat pad (3) and the anti-slip spring pad (4) have through holes inside, and the screw body (1) is slidably connected inside the through holes and is of the same size.
3. The anti-loosening self-tapping screw according to claim 1, characterized in that: The anti-slip spring pad (4) is movably installed on the top of the anti-slip flat pad (3), and the left-hand hexagonal nut (5) is movably installed on the top of the anti-slip spring pad (4).
4. The anti-loosening self-tapping screw according to claim 1, characterized in that: The outer peripheral wall of the inner nut (2) is provided with an external thread, and the left-hand regular hexagonal nut (5) is threadedly connected to the external thread.
5. The anti-loosening self-tapping screw according to claim 1, characterized in that: The anti-slip pad (4) is movably installed at the bottom of the inner nut (2).