CN217633333U

CN217633333U - Self-tapping screw for thin-walled parts

Info

Publication number: CN217633333U
Application number: CN202221314332.3U
Authority: CN
Inventors: 麦国荣
Original assignee: Foshan Shunde Kaijinjia Hardware Products Co ltd
Current assignee: Foshan Shunde Kaijinjia Hardware Products Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-10-21
Anticipated expiration: 2032-05-30

Abstract

The utility model discloses a self tapping screw for thin wall spare, including the screw head, the top of screw head has been seted up, the bottom fixedly connected with protruding prism of screw head, the bottom fixedly connected with first spliced pole of protruding prism, the periphery fixed mounting of first spliced pole has the retaining member, the bottom fixedly connected with titanium alloy piece of first spliced pole, the bottom of titanium alloy piece is provided with self tapping screw post, pass through second spliced pole fixed connection between titanium alloy piece and the self tapping screw post, the fixed surface of self tapping screw post is connected with many rings of thread teeth, the afterbody fixedly connected with self tapping tip of self tapping screw post; the retaining member includes the sealing washer, and sealing washer fixed mounting is in the junction of retaining member and first connecting post. The utility model relates to a screw technical field. The self-tapping screw for the thin-wall part can increase the locking force and the engaging force of the self-tapping screw, so that the self-tapping screw is not easy to loosen, and the connection and the fixation of the thin-wall part are safe and reliable.

Description

Self-tapping screw for thin-walled parts

Technical Field

The utility model relates to a screw technical field specifically is a self tapping screw for thin wall spare.

Background

The self-tapping screw is mainly used for connecting and fixing thin plate parts, such as TPS plastic plates, color steel plates and the like, and is generally constructed by using a special electric tool through drilling, tapping, fixing and locking at one time.

The prior art has the following defects and shortcomings:

the existing self-tapping screw has larger torsion when being locked in, and is easy to cause thin-wall bulge or crack when connecting and fixing thin-wall parts, thereby causing damage to the thin-wall parts; in addition, the locking force and the engaging force between the existing self-tapping screw and the thin-wall part are insufficient in the using process, the thin-wall part is vibrated, so that the screw is easy to loosen, the screw is retracted, and the connection and the fixation of the thin-wall part are unreliable.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a self tapping screw for thin wall spare has solved the problem that prior art exists.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the self-tapping screw for the thin-wall part comprises a screw head, wherein a notch is formed in the top of the screw head, a convex prism is fixedly connected to the bottom of the screw head, a first connecting column is fixedly connected to the bottom of the convex prism, a locking piece is fixedly mounted on the periphery of the first connecting column, a titanium alloy sheet is fixedly connected to the bottom of the first connecting column, a self-tapping screw column is arranged at the bottom of the titanium alloy sheet, the titanium alloy sheet is fixedly connected with the self-tapping screw column through a second connecting column, a plurality of circles of thread teeth are fixedly connected to the surface of the self-tapping screw column, and a self-tapping pointed end is fixedly connected to the tail of the self-tapping screw column;

the retaining member includes the sealing washer, sealing washer fixed mounting is in the junction of retaining member and first spliced pole, first spliced pole periphery fixedly connected with spacing ring, the bottom fixed mounting of spacing ring has the spring, the spring spiral encircles the setting on first spliced pole.

Preferably, the notch is a cross-shaped groove or a straight groove.

Preferably, the screw head is provided with a wear-resistant coating.

Preferably, the section of the convex rib column is a polygon, and the number of the sides is at least 4.

Preferably, the retaining member is hollow structure, and the through-hole that supplies first connecting column to pass is all seted up to top and bottom, first connecting column runs through retaining member inside rotatable.

Preferably, the limiting ring is located at the upper end inside the locking part, and the limiting ring is in contact with the top wall inside the locking part.

Advantageous effects

The utility model provides a self tapping screw for thin wall spare. Compared with the prior art, the method has the following beneficial effects:

(1) This a self tapping screw for thin wall spare through set up the retaining member on the first spliced pole in screw head bottom, can increase self tapping screw's locking force and mating force through the elasticity of the inside spring of retaining member at self tapping screw post screw in thin wall in-process, makes the difficult production of self tapping screw become flexible, and is more safe and reliable to the connection of thin wall spare is fixed.

(2) According to the self-tapping screw for the thin-wall part, the titanium alloy sheet is fixedly connected between the first connecting column and the second connecting column, so that the self-tapping screw can buffer and resist impact to vibration of the thin-wall part in the using process after being screwed into the thin-wall part, and the self-tapping screw is more stable and reliable in locking and fixing.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the locking member of the present invention;

fig. 3 is a schematic view of the screw head of the present invention.

In the figure: 1. a screw head; 11. a notch; 2. a convex prism; 3. a first connecting post; 4. a locking member; 41. a seal ring; 42. a limiting ring; 43. a spring; 5. a titanium alloy sheet; 6. a self-tapping screw post; 7. a second connecting column; 8. thread teeth; 9. a self-tapping tip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the self-tapping screw for the thin-wall part comprises a screw head 1, a notch 11 is formed in the top of the screw head 1, a convex prism 2 is fixedly connected to the bottom of the screw head 1, a first connecting column 3 is fixedly connected to the bottom of the convex prism 2, a locking piece 4 is fixedly mounted on the periphery of the first connecting column 3, a titanium alloy sheet 5 is fixedly connected to the bottom end of the first connecting column 3, a self-tapping screw column 6 is arranged at the bottom of the titanium alloy sheet 5, the titanium alloy sheet 5 is fixedly connected with the self-tapping screw column 6 through a second connecting column 7, a plurality of circles of thread teeth 8 are fixedly connected to the surface of the self-tapping screw column 6, and a self-tapping tip 9 is fixedly connected to the tail of the self-tapping screw column 6;

retaining member 4 includes sealing washer 41, and sealing washer 41 fixed mounting is in the junction of retaining member 4 and first connecting column 3, and first connecting column 3 periphery fixedly connected with spacing ring 42, the bottom fixed mounting of spacing ring 42 has spring 43, and spring 43 spiral is encircleed and is set up on first connecting column 3.

In this embodiment, the notch 11 is a cross-shaped groove or a straight-line-shaped groove, so that an external tool can lock and fix the tapping screw by using the cross-shaped groove or the straight-line-shaped groove; the wear-resistant coating is arranged on the screw head 1, so that the wear rate of the screw head after long-time use is reduced, and the service life of the self-tapping screw is prolonged; the section of the convex prism 2 is polygonal, and the number of the edges is at least 4, so that the self-tapping screw can be conveniently detached by using tools such as pliers and the like; the locking member 4 is of a hollow structure, through holes for the first connecting columns 3 to penetrate through are formed in the top and the bottom of the locking member 4, the first connecting columns 3 penetrate through the locking member 4 and can rotate, and the self-tapping screw column 6 and the thin-wall part can be fixed conveniently by screwing the first connecting columns 3; the spacing ring 42 is arranged at the upper end inside the retaining member 4, the spacing ring 42 is in contact with the top wall inside the retaining member 4, and the spring 43 can be compressed through the spacing ring 42 in the process of screwing the first connecting column 3.

When the self-tapping screw is used, an external tool is used for locking and fixing the self-tapping screw by utilizing the notch 11, the locking piece 4 is arranged on the first connecting column 3 at the bottom of the screw head 1, the locking force and the engaging force of the self-tapping screw can be increased by the elastic force of the spring 43 inside the locking piece 4 in the process of screwing the self-tapping screw column 6 into the thin wall, so that the self-tapping screw is not easy to loosen, the thin-wall part is safe and reliable to connect and fix, meanwhile, the sealing ring 41 is arranged at the connecting part of the locking piece 4 and the first connecting column 3, the corrosion of rainwater and dust to the self-tapping screw can be reduced, and the service life of the self-tapping screw is prolonged; the titanium alloy sheet 5 is fixedly connected between the first connecting column 3 and the second connecting column 7, and can play a role in buffering and resisting impact on vibration of the thin-wall piece in the use process after the self-tapping screw is screwed into the thin-wall piece, so that the self-tapping screw is more stable and reliable in locking and fixing.

And those not described in detail in this specification are well within the skill of those in the art.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A self tapping screw for thin wall spare, including screw head (1), its characterized in that: the top of the screw head (1) is provided with a notch (11), the bottom of the screw head (1) is fixedly connected with a convex prism (2), the bottom of the convex prism (2) is fixedly connected with a first connecting column (3), a locking part (4) is fixedly installed on the periphery of the first connecting column (3), the bottom of the first connecting column (3) is fixedly connected with a titanium alloy sheet (5), the bottom of the titanium alloy sheet (5) is provided with a self-tapping screw column (6), the titanium alloy sheet (5) and the self-tapping screw column (6) are fixedly connected through a second connecting column (7), the surface of the self-tapping screw column (6) is fixedly connected with a plurality of circles of screw teeth (8), and the tail of the self-tapping screw column (6) is fixedly connected with a self-tapping tip (9);

retaining member (4) include sealing washer (41), sealing washer (41) fixed mounting is in the junction of retaining member (4) and first connecting column (3), first connecting column (3) periphery fixedly connected with spacing ring (42), the bottom fixed mounting of spacing ring (42) has spring (43), spring (43) spiral ring encircles the setting on first connecting column (3).

2. A self-tapping screw for thin-walled articles as claimed in claim 1, characterized in that: the notch (11) is a cross-shaped groove or a straight groove.

3. The self-tapping screw for thin-walled parts according to claim 1, characterized in that: and the screw head (1) is provided with a wear-resistant coating.

4. A self-tapping screw for thin-walled articles as claimed in claim 1, characterized in that: the cross section of the convex prism (2) is polygonal, and the number of sides is set to be at least 4.

5. The self-tapping screw for thin-walled parts according to claim 1, characterized in that: retaining member (4) are hollow structure, and the through-hole that supplies first spliced pole (3) to pass is all seted up with the bottom in the top, it is inside rotatable that retaining member (4) are run through in first spliced pole (3).

6. The self-tapping screw for thin-walled parts according to claim 1, characterized in that: the spacing ring (42) is located the inside upper end of retaining member (4), spacing ring (42) and the inside roof contact of retaining member (4).