A high strength self-tapping screw

Abstract

The present application discloses a high-strength self-tapping screw, which belongs to the technical field of screws. It includes a fixing bracket, the fixing bracket is used to position the screw body into the bottom hole, the screw body is arranged on the inner side of the fixing bracket, the screw body is used to tap into the bottom hole, the pre-tapping tap is arranged at one end of the screw body, and the screw body is used to fix the bracket; it can vertically enter the bottom hole, through the setting of the pre-tapping tap, the pre-tapping tap first enters the bottom hole, and the pre-tapping tap is set in a circular trapezoidal shape, so that the screw body can be vertically inserted into the bottom hole, preventing the screw body from tilting, thereby preventing the bottom hole from being damaged, and improving the fixing effect of the screw body.

Description

Technical Field

[0001] The present application relates to the technical field of screws, and more specifically, to a high-strength self-tapping screw. Background Art

[0002] Self-tapping screws are threaded fasteners that drill out matching female threads in pre-drilled holes in metal or non-metal materials. Self-tapping screws are mostly used to connect thin metal plates (steel plates, sawn plates, etc.).

[0003] In the related art, the screw is generally driven into the bottom hole by means of the driving tip and the driving wire. For example, the patent with the prior art publication number CN217873665U provides a corrosion-resistant and high-strength self-tapping screw. The device is provided with a screw body, a driving nut, a driving tip and a driving wire. The driving nut is welded to the top of the screw body, and the driving tip is welded to the bottom of the screw body. The driving wire is arranged on the surface of the screw body so that the screw can be screwed into the bottom hole.

[0004] Although the above-mentioned prior art solution can achieve the effect that the screw can be screwed into the bottom hole through the arrangement of the screw body, the tapping nut, the tapping point and the tapping wire, it still has the following defects: the tapping part of the self-tapping screw is easily tilted in the bottom hole, causing the screw to tilt into the hole, causing the bottom hole to be damaged, and failing to achieve a better fixing effect.

[0005] In view of this, we propose a high-strength self-tapping screw. Utility Model Content

[0006] The utility model provides a high-strength self-tapping screw, which solves the problem that the tapping part of the self-tapping screw is easy to tilt in the bottom hole, causing the screw to tilt into the hole, so that the bottom hole is damaged and a better fixing effect cannot be achieved.

[0007] In order to solve the above problems, the embodiment of the present application provides a high-strength self-tapping screw, including a fixing bracket, wherein the fixing bracket is used to fix the screw body into the bottom hole;

[0008] The screw body is arranged on the inner side of the fixing bracket, and the screw body is used to tap into the bottom hole;

[0009] A pre-tapping tap is arranged at one end of the screw body and is used to drive the screw body to vertically enter the bottom hole.

[0010] Furthermore, a fixing guide rod is symmetrically fixed on the top inner side of the fixing bracket, and a lifting handle is fixed on the top of the fixing bracket. The fixing bracket is arranged in a "Z" shape, and the other end of the fixing guide rod is provided with an anti-slip bottom pattern, and the other end of the anti-slip bottom pattern is arranged horizontally with the bottom end of the fixing bracket, pressing one side of the fixing bracket to prevent the screw body from tilting. After the fixed object is fixed, the fixing bracket is lifted upward by the lifting handle to make the fixing guide rod leave the supporting ring pad, and the anti-slip bottom pattern prevents the fixing guide rod from rotating in a circle, thereby achieving a better guiding effect, preventing the screw body from tilting, and protecting the bottom hole, thereby achieving a better fixing effect.

[0011] Furthermore, a tapping line is provided on the outside of the screw body, a nut is fixedly provided on one end of the screw body, a support ring pad is fixedly provided on the outside of one end of the screw body, and a plurality of anti-rotation teeth are fixedly provided on the bottom end of the support ring pad, so that the screw body can easily enter the bottom hole to fix the object to be fixed.

[0012] Furthermore, the pre-tapping tap is fixedly arranged at one end of the screw body, the outer side of the pre-tapping tap is provided with tapping lines, the outer side of the pre-tapping tap is provided with a plurality of chip grooves, the pre-tapping tap first enters the bottom hole, and the pre-tapping tap is arranged in a circular trapezoidal shape, so that the screw body can be vertically inserted into the bottom hole, preventing the screw body from tilting, thereby preventing the bottom hole from being damaged, and improving the fixing effect of the screw body.

[0013] Furthermore, the pre-tapping tap is arranged in a circular trapezoidal shape, so as to facilitate pre-verticalization of the screw body and prevent tilting.

[0014] Furthermore, the vertical guide rod passes through and is slidably arranged on the top end of the support ring pad, and the vertical guide rod stands vertically on the ground, so that the screw body can maintain a vertical state and enter the bottom hole.

[0015] Furthermore, the chip groove is arranged in a spiral curve to facilitate the discharge of debris.

[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0017] 1. The present application sets a pre-tapping tap, which first enters the bottom hole and is set in a circular trapezoidal shape, so that the screw body can be vertically inserted into the bottom hole, preventing the screw body from tilting, thereby preventing the bottom hole from being damaged and improving the fixing effect of the screw body;

[0018] 2. The present application provides a fixed bracket and a fixed guide rod, and the fixed guide rod stands vertically on the ground, so that the screw body can maintain a vertical state and enter the bottom hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a high-strength self-tapping screw disclosed in a preferred embodiment of the present application;

[0020] Figure 2 This is a schematic diagram of the main structure of a high-strength self-tapping screw disclosed in a preferred embodiment of the present application;

[0021] Figure 3 This is a schematic diagram of the upper and lower axonometric structure of a high-strength self-tapping screw disclosed in a preferred embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of a pre-tapping tap in a high-strength self-tapping screw disclosed in a preferred embodiment of the present application;

[0023] Explanation of the numbers in the figure: 1. Press the bracket; 101. Lifting handle; 102. Vertical guide rod; 1021. Anti-slip bottom pattern; 2. Screw body; 201. Tapping line; 202. Support ring pad; 2021. Anti-rotation teeth; 203. Nut; 3. Pre-tapping tap; 301. Tapping pattern; 302. Chip groove. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings.

[0025] Reference Figure 1 and Figure 2 , a high-strength self-tapping screw, comprising a fixing bracket 1, the fixing bracket 1 is used to position the screw body 2 into the bottom hole;

[0026] The screw body 2 is arranged on the inner side of the fixing bracket 1, and the screw body 2 is used to tap into the bottom hole;

[0027] The pre-tapping tap 3 is arranged at one end of the screw body 2 and is used to drive the screw body 2 to vertically enter the bottom hole.

[0028] The pre-tapping tap 3 first enters the bottom hole, and the pre-tapping tap 3 is set in a circular trapezoidal shape, so that the screw body 2 can be vertically inserted into the bottom hole to prevent the screw body 2 from tilting, thereby preventing the bottom hole from being damaged and improving the fixing effect of the screw body 2.

[0029] Reference Figure 2 , Figure 3 and Figure 4 A fixing guide rod 102 is symmetrically fixed on the inner top of the fixing bracket 1, a lifting handle 101 is fixed on the top of the fixing bracket 1, the fixing bracket 1 is arranged in a "Z" shape, the other end of the fixing guide rod 102 is provided with an anti-slip bottom pattern 1021, and the other end of the anti-slip bottom pattern 1021 is arranged horizontally with the bottom end of the fixing bracket 1, and the fixing guide rod 102 passes through and is slidably arranged on the top of the support ring pad 202.

[0030] Press one side of the fixing bracket 1 to prevent the screw body 2 from tilting. After the fixed object is fixed, lift the fixing bracket 1 upwards through the lifting handle 101 to make the fixing guide rod 102 leave the supporting ring pad 202. The anti-slip bottom pattern 1021 prevents the fixing guide rod 102 from rotating in a circle, thereby achieving a better guiding effect, preventing the screw body 2 from tilting, and protecting the bottom hole to achieve a better fixing effect.

[0031] Reference Figure 2 , Figure 3 and Figure 4 A tapping line 201 is arranged on the outside of the screw body 2, a nut 203 is fixedly arranged on one end of the screw body 2, a support ring pad 202 is fixedly arranged on the outside of one end of the screw body 2, a plurality of anti-rotation teeth 2021 are fixedly arranged on the bottom end of the support ring pad 202, a pre-tapping tap 3 is fixedly arranged at one end of the screw body 2, a tapping pattern 301 is arranged on the outside of the pre-tapping tap 3, a plurality of chip grooves 302 are opened on the outside of the pre-tapping tap 3, the pre-tapping tap 3 is arranged in a circular trapezoidal shape, and the chip grooves 302 are arranged in a spiral curve.

[0032] The pre-tapping tap 3 is pre-inserted into the bottom hole, and the object to be fixed is located at the bottom end of the support ring pad 202 and contacts the anti-rotation teeth 2021, and the anti-rotation teeth 2021 are set with nylon rubber material to prevent slipping and increase friction. Then, the screw body 2 is rotated through the nut 203, so that the pre-tapping tap 3 can rotate in the bottom hole, and the tapping lines 301 on the outside of the pre-tapping tap 3 are used to tap the bottom hole. Then, the tapping line 201 can be easier to rotate, which facilitates the entry of the screw body 2, and the debris is discharged from the bottom hole through the chip groove 302 and the tapping line 201. The support ring pad 202 will slowly descend until the object to be fixed is fixed. The pre-entry of the pre-tapping tap 3 prevents the screw body 2 from tilting.

[0033] Working principle: When in use, the pre-tapping tap 3 is pre-inserted into the bottom hole, and the fixing guide rod 102 is inserted from the top of the fixing guide rod 102 to press one side of the fixing bracket 1, and the object to be fixed is located at the bottom end of the support ring pad 202 and contacts the anti-rotation teeth 2021, and the anti-rotation teeth 2021 are set with nylon rubber material to prevent slipping and increase friction. Then, the screw body 2 is rotated through the nut 203, so that the pre-tapping tap 3 can rotate in the bottom hole, and the tapping pattern 301 on the outside of the pre-tapping tap 3 is used to tap the pattern in the bottom hole, and then tapping The wire 201 can be rotated more easily, facilitating the entry of the screw body 2, and the debris is discharged from the bottom hole through the chip groove 302 and the setting of the tapping wire 201, and the support ring pad 202 will slowly descend until the object to be fixed is fixed, and then the lifting handle 101 is used to lift and press the bracket 1 upward to make the standing guide rod 102 leave the supporting ring pad 202, and the anti-slip bottom pattern 1021 prevents the standing guide rod 102 from rotating in a circle, thereby achieving a better guiding effect, preventing the screw body 2 from tilting, and protecting the bottom hole, achieving a better fixing effect.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A high-strength self-tapping screw, characterized in that: Include: Press the bracket (1); A screw body (2), the screw body (2) being arranged on the inner side of the fixing bracket (1), and the screw body (2) being used for tapping into the bottom hole; A pre-tapping tap (3) is arranged at one end of the screw body (2) and is used to drive the screw body (2) to vertically enter the bottom hole.

2. The high-strength self-tapping screw according to claim 1, characterized in that: A vertical guide rod (102) is symmetrically fixedly arranged at the inner top end of the fixing bracket (1), a lifting handle (101) is fixedly arranged at the top end of the fixing bracket (1), the fixing bracket (1) is arranged in a "Z" shape, the other end of the vertical guide rod (102) is provided with an anti-slip bottom pattern (1021), and the other end of the anti-slip bottom pattern (1021) is arranged horizontally with the bottom end of the fixing bracket (1).

3. The high-strength self-tapping screw according to claim 1, characterized in that: A tapping line (201) is arranged on the outside of the screw body (2), a nut (203) is fixedly arranged on one end of the screw body (2), a support ring pad (202) is fixedly arranged on the outside of one end of the screw body (2), and a plurality of anti-rotation teeth (2021) are fixedly arranged on the bottom end of the support ring pad (202).

4. The high-strength self-tapping screw according to claim 1, characterized in that: The pre-tapping tap (3) is fixedly arranged at one end of the screw body (2), the outer side of the pre-tapping tap (3) is provided with a tapping pattern (301), and the outer side of the pre-tapping tap (3) is provided with a plurality of chip grooves (302).

5. The high-strength self-tapping screw according to claim 4, characterized in that: The pre-tapping tap (3) is arranged in a circular trapezoidal shape.

6. The high-strength self-tapping screw according to claim 2, characterized in that: The standing guide rod (102) penetrates and is slidably arranged on the top end of the supporting ring pad (202).

7. The high-strength self-tapping screw according to claim 4, characterized in that: The chip groove (302) is arranged in a spiral curve.

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