Anti-loose self-locking screw
By arranging a flange surface and anti-slip teeth at the bottom of the self-locking screw head, the problem of the self-locking screw being easy to loosen is solved, and the stability and firmness of the screw connection are achieved.
Patent Information
- Application Number
- CN202423070402.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing self-locking screws are easy to loosen during use, resulting in unstable connections.
An anti-loosening self-locking screw is designed. A flange surface is set at the bottom of the screw body head. The bottom of the flange surface forms a 5-degree angle with the horizontal plane, and a number of anti-slip teeth are set at the bottom of the flange surface. After the screw is fully tightened, the flange surface provides tension to prevent loosening.
The design of flange surface and anti-slip teeth improves the connection firmness of the screws, avoids the loosening of the screws, and enhances the stability of the connection.
Smart Images
Figure CN223424421U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of self-locking screws, in particular to an anti-loosening self-locking screw. Background Art
[0002] Self-locking screws are self-tapping screws that do not require nuts.
[0003] Existing self-locking screws all rely on extrusion to form internal threads in the hole and form a reliable locking thread connection. This connection method is unstable, and the screw is easy to separate from the object after it has been drilled into the object for a period of time. Utility Model Content
[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an anti-loosening self-locking screw, which has the effect of preventing the screw from loosening.
[0005] The above technical objectives of the present invention are achieved through the following technical solutions:
[0006] A self-locking screw having an anti-loosening function, comprising a screw body, the screw body comprising a head and a stud, the outer peripheral surface of the stud being processed with a triangular thread, the bottom of the head being integrally formed with a flange surface, the flange surface being located between the stud and the head;
[0007] The angle between any line segment on the bottom plane of the flange surface and the horizontal plane is 5 degrees.
[0008] In a preferred example, the present invention can be further configured as follows: a plurality of anti-slip teeth are integrally formed on the bottom of the flange surface.
[0009] In a preferred example, the present invention can be further configured as follows: a hexagonal groove is provided on a side of the head away from the stud.
[0010] In a preferred example, the present invention can be further configured as follows: the cross section of the flange surface is circular, and the straight line where the central axis of the flange surface is located is collinear with the straight line where the central axis of the head is located;
[0011] The cross-sectional radius of the flange surface is 1.4-1.5 times the cross-sectional radius of the head surface.
[0012] In a preferred example, the present invention can be further configured as follows: a plurality of the anti-slip teeth are perpendicular to the bottom surface of the flange surface.
[0013] In summary, the present invention has at least one of the following beneficial technical effects:
[0014] 1. By setting a flange surface at the bottom of the head, there is an angle between the bottom plane of the flange surface and the horizontal plane. When the screw is fully tightened, the flange surface is slightly deformed, and the flange surface provides tension to prevent the screw from loosening.
[0015] 2. By providing a number of anti-slip teeth at the bottom of the flange surface, the connection firmness of the screws is further increased. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 2 is a schematic diagram of the top structure of this embodiment;
[0017] Figure 2 yes Figure 1 Schematic diagram of the AA half-section structure;
[0018] Figure 3 yes Figure 1 Schematic diagram of the structure viewed from above (excluding the anti-slip teeth).
[0019] In the figure, 1. screw body; 11. head; 12. stud; 2. flange surface; 3. anti-slip teeth; 4. hexagonal slot. DETAILED DESCRIPTION
[0020] The present invention will be described in further detail below with reference to the accompanying drawings.
[0021] Example:
[0022] Reference Figure 1-Figure 2 As shown, the present invention discloses a self-locking screw comprising a screw body 1, which includes a head 11 and a stud 12. The outer circumference of the stud 12 is machined with a triangular thread. A hexagonal slot 4 is formed on the side of the head 11 facing away from the stud 12. The hexagonal slot 4 increases the torque applied when the operator uses a tool to rotate the screw body 1.
[0023] A flange 2 is integrally formed at the bottom of the head 11, positioned between the stud 12 and the head 11. Any line segment on the bottom plane of the flange 2 forms an angle of 5 degrees with the horizontal plane. As the stud 12 enters the object, the flange 2 contacts the surface. As the stud 12 continues to move, the entire flange 2 deforms slightly until the entire bottom of the flange 2 is in full contact with the surface. When the screw body 1 is fully tightened, the flange 2 provides tension.
[0024] The flange surface 2 has a circular cross-section, with the center axis of the flange surface 2 being collinear with the center axis of the head 11. The radius of the flange surface 2 cross-section is 1.4-1.5 times that of the head 11. In this embodiment, the radius of the flange surface 2 cross-section is 1.4 times that of the head 11 cross-section.
[0025] The bottom of the flange surface 2 is integrally formed with a plurality of anti-slip teeth 3 , and the plurality of anti-slip teeth 3 are perpendicular to the surface where the bottom of the flange surface 2 is located.
[0026] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.
Claims
1. A self-locking screw, comprising a screw body (1), wherein the screw body (1) comprises a head (11) and a stud (12), wherein the outer peripheral surface of the stud (12) is processed with a triangular thread, and wherein: The bottom of the head (11) is integrally formed with a flange surface (2), and the flange surface (2) is located between the stud (12) and the head (11); The angle between any line segment on the bottom plane of the flange surface (2) and the horizontal plane is 5 degrees.
2. The anti-loosening self-locking screw according to claim 1, characterized in that: The bottom of the flange surface (2) is integrally formed with a plurality of anti-slip teeth (3).
3. The anti-loosening self-locking screw according to claim 2, characterized in that: A hexagonal groove (4) is provided on a side of the head (11) away from the stud (12).
4. The anti-loosening self-locking screw according to claim 3, characterized in that: The cross section of the flange surface (2) is circular, and the straight line on which the central axis of the flange surface (2) is located is collinear with the straight line on which the central axis of the head (11) is located; The cross-sectional radius of the flange surface (2) is 1.4-1.5 times the cross-sectional radius of the head (11).
5. The anti-loosening self-locking screw according to claim 4, characterized in that: The plurality of anti-slip teeth (3) are all perpendicular to the bottom surface of the flange surface (2).