Unlock instant, AI-driven research and patent intelligence for your innovation.

Anti-rotation expansion bolt

An expansion bolt, anti-rotation technology, applied in the direction of connecting components, pins, mechanical equipment, etc., can solve problems such as affecting work efficiency, inability to tighten nuts, and limited friction on the wall, and achieve the effect of improving work efficiency.

Pending Publication Date: 2021-09-17
王春风
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The problems often encountered in the use of expansion bolts are: due to factors such as loose walls or building substrates, the diameter of the inner wall of the prefabricated hole is larger than the outer diameter of the expansion tube, resulting in insufficient friction between the expansion tube and the inner wall of the hole; Although there can be interlocking connection between the expansion tube and the screw rod, because the expansion tube itself can rotate in the hole, during the nut tightening process, the expansion tube and the screw rod rotate with the rotation of the wrench and the nut, and the nut cannot be tightened , so that the expansion bolt cannot expand
[0003] At present, various improvement technologies for expansion bolts are all improved on the expansion tube or the conical head end of the screw to increase the friction between the expansion tube and the hole. With the help of the interlock between the expansion tube and the screw, To solve the problem that the screw rotates with the nut; but because the inner wall of the hole is circular, the friction force generated by the hole wall is limited. When the nut locking resistance is slightly larger, the nut and the screw will still rotate together. Make the expansion bolt unable to expand, affecting work efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Anti-rotation expansion bolt
  • Anti-rotation expansion bolt
  • Anti-rotation expansion bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, this embodiment discloses an anti-rotation expansion bolt, including: screw rod (1), nut (2), gasket (3) and expansion tube (4), carried out on the basis of common expansion bolts The technology is improved, and the mechanism of protrusion (5) or depression (6) is designed on the exposed end of the screw rod (1). As shown in Fig. 1 to Fig. 4, the expansion bolt of the screw rod (1) with a flat-shaped protrusion is taken as an example below for implementation description. First, assemble the expansion bolts according to Figure 1 and insert them into the hole in the wall. Then, hold or insert a tool such as a vise with one hand into the flat protrusion (5) on the exposed end of the screw (1), and apply moderate force to the screw (1) to prevent It rotates, and another hand-held wrench locks the nut (2) at the same time; as the nut (2) is tightened, the conical head of the screw rod (1) gradually contacts with the opening of the expansion tube (4), and the ex...

Embodiment 2

[0023] Embodiment 2, this embodiment discloses an anti-rotation expansion bolt, including: screw rod (1), nut (2), gasket (3) and expansion tube (4), carried out on the basis of common expansion bolts The technology is improved, and the mechanism of protrusion (5) or depression (6) is designed on the exposed end of the screw rod (1). As shown in Fig. 5, the following takes the expansion bolt of the screw rod (1) sunk in a straight line as an example for implementation description. First, assemble the expansion bolts according to Figure 5 and insert them into the hole in the wall. Then, insert a tool such as a screwdriver into the indentation (6) at the exposed end of the screw (1), and apply moderate force to the screw (1) to prevent it from rotating. Lock the nut (2) with a wrench in hand; as the nut (2) is tightened, the conical head of the screw (1) gradually contacts the opening of the expansion tube (4), and the opening of the expansion tube (4) gradually expands Open, a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an anti-rotation expansion bolt which comprises a screw rod, a nut, a gasket and an expansion pipe. The nut, the gasket and the expansion pipe are arranged on the screw rod. The anti-rotation expansion bolt is characterized in that a bulge or a recess is arranged at the tail end of the threaded section of the screw rod. Tools such as a screwdriver, a vice and a wrench can be used for fixing the bulge or the recess, so that the screw rod is fixed. The anti-rotation expansion bolt is used for solving the problem that a screw rod rotates along with rotation of a wrench and a nut in the tightening or disassembling process of the expansion bolt, so that the working efficiency of using the expansion bolt is improved.

Description

technical field [0001] The invention relates to an expansion bolt, which belongs to the technical field of connecting standard parts. Background technique [0002] The problems often encountered in the use of expansion bolts are: due to factors such as loose walls or building substrates, the diameter of the inner wall of the prefabricated hole is larger than the outer diameter of the expansion tube, resulting in insufficient friction between the expansion tube and the inner wall of the hole; Although there can be interlocking connection between the expansion tube and the screw rod, because the expansion tube itself can rotate in the hole, during the nut tightening process, the expansion tube and the screw rod rotate with the rotation of the wrench and the nut, and the nut cannot be tightened , so that the expansion bolt cannot expand. [0003] At present, various improvement technologies for expansion bolts are all improved on the expansion tube or the conical head end of t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F16B13/00F16B13/06
CPCF16B13/001F16B13/065
Inventor 王春雷
Owner 王春风
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com