Broken screw extractor

A technology for extractors and screws, which is applied to hand-held tools, manufacturing tools, etc., can solve the problems of easy breakage of screws, difficult screws, and damage to threads, etc., and achieves the effect of convenient use and simple operation.

Inactive Publication Date: 2012-05-09
杨锋刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The screws for installing and fixing metal parts are easy to break due to improper installation or removal of rusted screws for a long time, but it is difficult to remove the broken screws inside the metal parts. Generally, electric welding is used to weld a nut on the broken ...

Method used

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  • Broken screw extractor
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 1 , figure 2 As shown in the present invention, the broken screw extractor includes a body 1 and a mouth 2, the body 1 gradually becomes thicker from bottom to top, the arbitrary cross section of the body 1 is a regular polygon, and the edge of the body 1 is provided with a protruding mouth 2 , the tooth opening 2 is in the same direction, the upper part of the big end of the body 1 is provided with a hole 3, and the end of the big end of the main body 1 is provided with a handle 4, and the handle 4 is either in the shape of a cuboid, or has two sides milled into a plane Cylindrical.

[0014] First drill a hole in the deadhead screw, and then use a hammer to hammer the lower end of the deadhead screw extractor into the pre-drilled deadhead screw, so that the tooth mouth 2 on the body 1 is embedded in the deadhead screw body, and in the upper hole 3 of the body 1 Insert any applicable metal cross bar, screw the cross bar, or screw the handle 4 at the en...

Embodiment 2

[0016] Such as image 3 , Figure 4 Shown the present invention, its structure except that the direction of tooth opening 2 is opposite to embodiment 1, and all the other structures are identical with embodiment 1, and are used for taking out the dead end screw whose thread direction is opposite to embodiment 1.

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Abstract

The invention discloses a broken screw extractor, which relates to a manual tool which can be used for extracting a broken screw easily. The technical problem to be solved is to provide a broken screw extractor for extracting a broken screw without damaging screw threads. The broken screw extractor comprises a body and teeth, wherein the body gradually becomes thick from bottom to top; any cross section of the body is regularly polygonal; the edge of the body is provided the projecting teeth; the teeth are in the same direction; the upper part of the large head end of the body is provided with a hole; the end part of the large head end of the body is provided with a handle; and the handle has a rectangular or cylindrical structure of which the two faces are milled into planes. The broken screw extractor is convenient to use, is easy to operate, is suitable for any broken screw, and is prevented from damaging the screw thread.

Description

technical field [0001] The invention relates to a broken screw extractor, which relates to a hand tool that can easily take out broken screws. Background technique [0002] The screws for installing and fixing metal parts are easy to break due to improper installation or removal of rusted screws for a long time, but it is difficult to remove the broken screws inside the metal parts. Generally, electric welding is used to weld a nut on the broken screw. Take out the broken head screw by screwing the nut. This method requires the help of an electric welding machine, and has limitations, or directly beats the broken head screw to take out the broken head screw. This method is likely to destroy its connection. Threads of metal parts. Contents of the invention [0003] The invention overcomes the deficiencies in the prior art, and the technical problem to be solved is to provide a broken screw extractor capable of taking out broken screws without destroying threads. [0004] ...

Claims

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Application Information

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IPC IPC(8): B25B27/18
Inventor 杨锋刚
Owner 杨锋刚
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