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Bolt group difficult to remove

A bolt group, not easy technology, applied in the direction of bolts, screws, nuts, etc., can solve the problems that ordinary bolt groups cannot meet the requirements, and the bolt groups cannot be easily disassembled, so as to achieve the effect of not easy disassembly.

Inactive Publication Date: 2016-12-21
ZHEJIANG TIANYUAN METAL PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary bolt groups are more convenient to disassemble, and in some occasions, the bolt groups cannot be easily disassembled
Existing common bolt sets do not meet the requirements

Method used

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  • Bolt group difficult to remove
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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] refer to figure 1 and 2 , a bolt group that is not easy to disassemble in the present invention, including a screw rod 1, a screw head 2, a first sleeve 5, a limit head 3, a special-shaped nut 4, and a second sleeve 6, and one end of the screw rod 1 is fixed with a screw rod Head 2, the other end of the screw rod 1 is connected with the limit head 3 through the connecting rod 13, the screw head 2 is cylindrical, and the side wall of the screw head 2 is provided with several pin holes 20, and the outer side of the screw head 2 Covered with a first sleeve 5, the first sleeve 5 is provided with a first through hole 52 matched with the twist head 2, the first sleeve 5 is in the shape of an outer hexagon, and the side wall of the first sleeve 5 is There are several jacks 50 that cooperate with the pin holes 20, and each jack 50 is inserted with a fixed rod 51 inserted into the corresponding pin hole 20. The limit head 3 is hemispherical, and the plane end of the limit head ...

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PUM

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Abstract

The invention discloses a bolt group difficult to remove. The bolt group comprises a screw, a screwing head, a first sleeve, a limiting head, a special-shaped nut and a second sleeve, wherein the screwing head is fixed to one end of the screw, the other end of the screw is connected with the limiting head by virtue of a connecting rod, the screwing head is cylindrical, the first sleeve sleeves the outer side of the screwing head, the limiting head is hemispherical, the plane end of the limiting head is close to the screw, the special-shaped nut is externally elliptical, the second sleeve sleeves the outer part of the special-shaped nut, the second sleeve is externally hexagonal, one end of the special-shaped nut is closed, a threaded hole is formed in the nut, a clamping groove is formed in the bottom of the threaded hole, the bottom of the clamping groove is hemispherical, and a plurality of baffles which can be turned over only towards the bottom of the clamping groove are arranged on the side wall of the clamping groove. According to the bolt group, the screwing head is cylindrical, so that the screwing head can be screwed only when the screwing head is matched with the first sleeve and a fixed rod, and the bolt group is difficult to remove.

Description

【Technical field】 [0001] The invention relates to the technical field of fasteners, especially the technical field of bolt groups. 【Background technique】 [0002] The bolt group is widely used in various fields and is a commonly used fastener. Bolt groups are often composed of bolts and nuts. Ordinary bolt groups are easy to disassemble. In some occasions, the bolt groups cannot be easily disassembled. Existing common bolt sets cannot meet the requirements. 【Content of invention】 [0003] The purpose of the present invention is to solve the problems in the prior art, and propose a bolt group that is not easy to disassemble, which can make the bolt group difficult to disassemble. [0004] In order to achieve the above object, the present invention proposes a bolt group that is not easy to disassemble, including a screw rod, a screw head, a first sleeve, a limit head, a special-shaped nut, and a second sleeve, and one end of the screw rod is fixed with a screw head , the...

Claims

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Application Information

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IPC IPC(8): F16B35/04F16B35/06F16B37/00F16B41/00
CPCF16B35/044F16B35/06F16B37/00F16B41/00F16B41/002
Inventor 李勇
Owner ZHEJIANG TIANYUAN METAL PROD