CN217603123U

CN217603123U - Anti-pulling screw

Info

Publication number: CN217603123U
Application number: CN202221589766.4U
Authority: CN
Inventors: 王峰伟
Original assignee: Zhejiang Xinshengda Metal Technology Development Co ltd
Current assignee: Zhejiang Xinshengda Metal Technology Development Co ltd
Priority date: 2022-06-23
Filing date: 2022-06-23
Publication date: 2022-10-18
Anticipated expiration: 2032-06-23

Abstract

The utility model discloses a screw that tensile was pulled out, include screw main part, external screw thread, limiting plate, prevent changeing the strip, screw main part has two, and screw main part comprises screwhead and screw rod, and the screw rod is fixed in the screwhead bottom, is equipped with the external screw thread on the screw rod, and the thread of external screw thread is triangle-shaped, and the contained angle between one side that is close to the screwhead of thread and the screw rod is the acute angle, the top of screwhead is fixed with the limiting plate of a vertical setting, is equipped with a through-hole on the limiting plate, prevent changeing the strip and pass two through-holes, prevent changeing the both ends of strip and form a locking hook through buckling, and the limiting plate is hooked to the locking hook. The utility model discloses a set the screw tooth in the screw main part to its contained angle that is close to between one side of screwhead and the screw rod and be the acute angle for the screw tooth is umbelliform, and the screw main part has better tensile and pulls out the performance, and difficult pine takes off.

Description

Anti-pulling screw

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of fastener, especially the technical field of screw.

[ background of the invention ]

A screw is a common fastener and is widely used. For areas affected by strong wind and the like, the screw is easy to be subjected to large drawing force, is easy to be pulled out due to overlarge drawing force to cause failure, and is not safe enough to use.

[ Utility model ] content

The utility model aims at solving the problem in the prior art, providing a screw that tensile was pulled out, can make the screw can resist great drawing force, and difficult not hard up.

For realize above-mentioned purpose, the utility model provides a screw that tensile was pulled out, include screw main part, external screw thread, limiting plate, prevent changeing the strip, screw main part has two, and screw main part comprises screwhead and screw rod, and the screw rod is fixed in the screwhead bottom, is equipped with the external screw thread on the screw rod, and the thread of external screw thread is triangle-shaped, and the one side that is close to the screwhead of thread and the contained angle between the screw rod are the acute angle, the top of screwhead is fixed with the limiting plate of a vertical setting, is equipped with a through-hole on the limiting plate, prevent changeing the strip and pass two through-holes, prevent changeing the both ends of strip and form a locking hook through buckling, and the limiting plate is hooked to the locking hook.

Preferably, the limiting plate and the screw head are integrated.

Preferably, the removal of the lock hook portion of the rotation preventing bar is bent at most once.

Preferably, the limiting plate is rectangular, the through hole is located in the center of the limiting plate, and the locking hook hooks the limiting plate upwards.

The utility model has the advantages that: the utility model has the advantages that the included angle between one side of the screw body close to the screw head and the screw rod is an acute angle, so that the screw teeth are umbrella-shaped, and the screw body has better anti-pulling performance and is not easy to loosen; the limiting plate is matched with the anti-rotation strip, so that the screw main body is not easy to loosen in the using process.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a front view of a screw of the present invention for resisting pull-out;

fig. 2 is a partial schematic view of a screw of the present invention that resists pull-out.

In the figure: 1-screw main body, 2-limit plate, 3-anti-rotation strip, 10-screw thread, 11-screw head, 12-screw rod, 20-through hole and 30-locking hook.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the utility model relates to a screw that tensile was pulled out, include screw main part 1, external screw thread, limiting plate 2, prevent changeing strip 3, screw main part 1 has two, and screw main part 1 comprises screwhead 11 and screw rod 12, and screw rod 12 is fixed in screwhead 11 bottom, is equipped with the external screw thread on the screw rod 12, and the thread 10 of external screw thread is triangle-shaped, and the contained angle between one side that is close to screwhead 11 of thread 10 and screw rod 12 is the acute angle, screwhead 11's top is fixed with the limiting plate 2 of a vertical setting, is equipped with a through-hole 20 on the limiting plate 2, prevent changeing strip 3 and pass two through-holes 20, prevent changeing strip 3's both ends and form a locking hook 30 through buckling, and locking hook 30 hooks limiting plate 2, limiting plate 2 and screwhead 11 formula as an organic whole, the detaching locking hook 30 part of preventing changeing strip 3 is once buckling at most, limiting plate 2 is the rectangle, and through-hole 20 is located the center of limiting plate 2, and locking hook 30 is limiting plate 2 upwards.

The utility model discloses the working process:

in the working process of the anti-pulling screw, the included angle between one side of the screw body 1, which is close to the screw head 11, and the screw rod 12 is set to be an acute angle by the screw teeth 10, so that the screw teeth 10 are umbrella-shaped, and the screw body 1 has better anti-pulling performance and is not easy to loosen; the limiting plate 2 is matched with the anti-rotation strip 3, so that the screw body 1 is not easy to loosen in the using process.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. A drawing-resistant screw is characterized in that: include screw main part (1), external screw thread, limiting plate (2), prevent changeing strip (3), screw main part (1) has two, and screw main part (1) comprises screwhead (11) and screw rod (12), and screw rod (12) are fixed in screwhead (11) bottom, is equipped with the external screw thread on screw rod (12), and thread (10) of external screw thread are triangle-shaped, and the contained angle between one side that is close to screwhead (11) and screw rod (12) of thread (10) is the acute angle, the top of screwhead (11) is fixed with limiting plate (2) of a vertical setting, is equipped with one through-hole (20) on limiting plate (2), prevent changeing strip (3) and pass two through-holes (20), prevent changeing both ends of strip (3) and form one locking hook (30) through buckling, and limiting plate (2) are hooked in locking hook (30).

2. A pull-resistant screw as claimed in claim 1, wherein: the limiting plate (2) and the screw head (11) are of an integrated structure.

3. A pull-resistant screw as claimed in claim 1, wherein: the part of the rotation preventing strip (3) except the locking hook (30) is bent at most once.

4. A pull-resistant screw as claimed in claim 1, wherein: the limiting plate (2) is rectangular, the through hole (20) is located in the center of the limiting plate (2), and the limiting plate (2) is hooked upwards by the locking hook (30).