Stainless steel self drilling screw

Abstract

A rod body is located at the bottom of a screw head, a drill tail is located at the bottom of the rod body, the rod body is sleeved with a gasket, the gasket comprises a first half disc and a second half disc, and the bottom of the first half disc and the bottom of the second half disc are each provided with an anti-loosening tooth. Two inserting strips are symmetrically arranged on the side, close to the second half disc, of the first half disc, through grooves are formed in the inserting strips, clamping grooves are formed in the side, close to the first half disc, of the second half disc, and when the first half disc and the second half disc are tightly attached together, the inserting strips are clamped in the clamping grooves. According to the self-drilling screw, the gasket with the anti-loosening teeth is used for enhancing the anti-loosening capacity of the self-drilling screw, and when the self-drilling screw needs to be disassembled, the gasket only needs to be divided into the first half disc and the second half disc and removed, so that the screw loses the meshing relation between the anti-loosening teeth and the surface of a plate; therefore, the anti-loose teeth are prevented from rotating along with the screw to damage the surface of steel.

Description

Technical Field

[0001] The utility model relates to the technical field of self-drilling screws, in particular to a stainless steel self-drilling screw. Background Art

[0002] Self-drilling screws have a drilled or pointed tail, requiring no additional processing. They can be drilled, tapped, and tightened directly into the setting material or foundation, significantly reducing construction time. Compared to ordinary screws, they offer higher pullout strength and retention, resisting loosening even after assembly. Using a safety punch and tap, they are easy to use and can be completed in one go. They are primarily used to secure prefabricated steel tiles to steel structures, but can also be used to secure thin panels in simple construction.

[0003] In order to prevent self-drilling screws from rotating and loosening due to vibration or other external forces, anti-loosening teeth are often provided on the underside of the screw head. The purpose of the anti-loosening teeth is to prevent the screw from loosening, and usually it does not prevent the screw from being screwed into the plate. This makes the anti-loosening teeth appear to be tilted to achieve the purpose of only limiting the loosening of the screw; however, after the anti-loosening teeth are provided, the subsequent removal of the screw will cause significant and irreversible damage to the material surface. Utility Model Content

[0004] The purpose of the utility model is to provide a stainless steel self-drilling screw to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stainless steel self-drilling screw, comprising: a screw head, a rod body, and a drill tail, the rod body being located at the bottom of the screw head, the drill tail being located at the bottom of the rod body, a gasket being connected to the outer surface of the rod body, the gasket comprising a first half disk and a second half disk, the bottoms of the first half disk and the second half disk both being provided with anti-loosening teeth, two insertion strips being symmetrically arranged on a side of the first half disk close to the second half disk, the insertion strips being provided with a through slot, and a clamping slot being provided on a side of the second half disk close to the first half disk, and when the first half disk and the second half disk are tightly attached to each other, the insertion strips are clamped in the clamping slot.

[0006] Furthermore, two symmetrically arranged limiting grooves are provided on the screw head, and a limiting block is fixedly connected to the top of each of the first half disk and the second half disk.

[0007] Furthermore, the surface of the limit block is roughened.

[0008] Furthermore, the first half disk and the second half disk are each provided with a through hole, and the through hole is provided on the symmetry axis of the first half disk.

[0009] Furthermore, a spiral thread is integrally formed on the rod body.

[0010] Furthermore, a cross groove is provided on the top of the screw head.

[0011] In the above technical solution, the stainless steel self-drilling screw provided by the utility model has the following beneficial effects:

[0012] The utility model is used to strengthen the anti-loosening capability of the self-drilling screw by using a gasket with anti-loosening teeth. When the self-drilling screw needs to be disassembled, the gasket only needs to be divided into a first half plate and a second half plate and removed, so that the screw loses the bite relationship between the anti-loosening teeth and the surface of the plate, thereby preventing the anti-loosening teeth from damaging the steel surface as the screw rotates.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0014] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic structural diagram of an embodiment of the present invention;

[0017] Figure 2 A bottom-view structural diagram of an embodiment of the present invention;

[0018] Figure 3 A cross-sectional view of a gasket provided in an embodiment of the present utility model.

[0019] Description of reference numerals:

[0020] 1. Screw head; 11. Cross slot; 12. Limiting slot; 2. Rod body; 3. Screw thread; 4. Drill tail; 5. Gasket; 51. Limiting block; 52. Through hole; 53. Anti-loosening tooth; 54. First half disk; 541. Insert; 542. Through slot; 55. Second half disk; 551. Slot. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0022] See also Figure 1-Figure 3 A stainless steel self-drilling screw comprises: a screw head 1, a rod body 2, and a drill tail 4. The rod body 2 is located at the bottom of the screw head 1, and the drill tail 4 is located at the bottom of the rod body 2. The screw head 1, the rod body 2, and the drill tail 4 are processed from the same cylindrical plate. A gasket 5 is connected to the outer sleeve of the rod body 2. The top of the gasket 5 is tightly attached to the bottom of the screw head 1. The gasket 5 comprises a first half disk 54 and a second half disk 55. The bottoms of the first half disk 54 and the second half disk 55 are both provided with anti-loosening teeth 53. Two inserts 541 are symmetrically arranged on one side of the first half disk 54 close to the second half disk 55. A through groove 542 is provided on the insert 541. A clamping groove 551 is provided on the side of the second half disk 55 close to the first half disk 54. When the first half disk 54 and the second half disk 55 are tightly attached to each other, the insert 541 is stuck in the clamping groove 551.

[0023] Specifically, outside the rod body 2, the first half disk 54 is inserted into the second half disk 55, so that the insertion strip 541 is inserted into the slot 551. The through slot 542 is a deformable space for the insertion strip 541, so that the deformation of the insertion strip 541 generates a bending force acting on the inner wall of the slot 551, so that the first half disk 54 and the second half disk 55 are plugged and fixed together.

[0024] The utility model uses a gasket 5 with anti-loosening teeth 53 to strengthen the anti-loosening ability of the self-drilling screw. When the self-drilling screw needs to be removed, the gasket 5 only needs to be divided into a first half disk 54 and a second half disk 55 and removed, so that the screw loses the bite relationship between the anti-loosening teeth 53 and the surface of the plate, thereby preventing the anti-loosening teeth 53 from damaging the surface of the plate as the screw rotates.

[0025] Furthermore, two symmetrically arranged limiting grooves 12 are provided on the screw head 1 , and a limiting block 51 is fixedly connected to the top of each of the first half disk 54 and the second half disk 55 .

[0026] Specifically, refer to Figure 1 The limiting block 51 is inserted into the limiting groove 12, so that when the screw is screwed into the plate, it rotates with the gasket 5, and then the anti-loosening teeth 53 are engaged with the surface of the plate, thereby enhancing the anti-loosening ability of the screw.

[0027] Furthermore, the surface of the limit block 51 is roughened so that when the limit block 51 is inserted into the limit groove 12, the friction between the outer side surface of the limit block 51 and the inner wall of the limit groove 12 can be used to fix the gasket 5 as a whole, so that the top of the gasket 5 contacts the bottom of the screw head 1, making it easier to screw the drill screw into the plate.

[0028] Furthermore, a through hole 52 is defined in each of the first half disk 54 and the second half disk 55 . The through hole 52 is located on the symmetry axis of the first half disk 54 .

[0029] Specifically, refer to Figure 1 The two through holes 52 are both vertically opened, and the axes are both located on the symmetry axis of the first half disk 54 or the second half disk 55, so that a thin stick can be inserted into the through hole 52 to separate the first half disk 54 and the second half disk 55.

[0030] Further, refer to Figure 1 A spiral thread 3 is integrally formed on the rod body 2 to enhance the anti-loosening ability of the screw.

[0031] Further, refer to Figure 1 A cross slot 11 is provided on the top of the screw head 1 so that the screw can be adapted to a flat-head screwdriver and a torx screwdriver.

[0032] In this utility model, reference is made to Figures 1 to 3 First, insert the first half disk 54 into the second half disk 55, then put the gasket 5 on the outside of the rod body 2, then align the limit block 51 with the limit groove 12 and insert the limit block 51 into the limit groove 12, and then use a screwdriver to screw the screw into the plate; when you need to remove the screw, use a thin stick to insert into the through hole 52, and slide it outward with force to make the first half disk 54 separate from the second half disk 55, then take out the second half disk 55 as well, and use a screwdriver to unscrew the screw.

[0033] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A stainless steel self-drilling screw comprising: A screw head (1), a rod body (2), and a drill tail (4), characterized in that: the rod body (2) is located at the bottom of the screw head (1), the drill tail (4) is located at the bottom of the rod body (2), a gasket (5) is connected to the outer shell of the rod body (2), the gasket (5) comprises a first half disk (54) and a second half disk (55), the bottoms of the first half disk (54) and the second half disk (55) are both provided with anti-loosening teeth (53), two insertion strips (541) are symmetrically arranged on the side of the first half disk (54) close to the second half disk (55), the insertion strips (541) are provided with through grooves (542), and a clamping groove (551) is provided on the side of the second half disk (55) close to the first half disk (54), and when the first half disk (54) and the second half disk (55) are tightly attached to each other, the insertion strips (541) are clamped in the clamping groove (551).

2. A stainless steel self-drilling screw according to claim 1, characterized in that: Two symmetrically arranged limiting grooves (12) are provided on the screw head (1), and a limiting block (51) is fixedly connected to the top of each of the first half disk (54) and the second half disk (55).

3. A stainless steel self-drilling screw according to claim 2, characterized in that: The surface of the limiting block (51) is roughened.

4. The stainless steel self-drilling screw according to claim 1, characterized in that: A through hole (52) is respectively provided on the first half disk (54) and the second half disk (55), and the through hole (52) is provided on the symmetry axis of the first half disk (54).

5. The stainless steel self-drilling screw according to claim 1, characterized in that: A spiral thread (3) is integrally formed on the rod body (2).

6. The stainless steel self-drilling screw according to claim 1, characterized in that: A cross groove (11) is provided on the top of the screw head (1).

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