Supercharge Your Innovation With Domain-Expert AI Agents!

Bolt head protective cap

A head protection and bolt technology, which is used in the field of anti-corrosion of automotive bolts, can solve the problems of weak connection and easy damage to the surface of the bolt head surface anti-corrosion, and achieve the effect of small friction area, reducing corrosion phenomenon and reducing damage.

Pending Publication Date: 2022-04-15
ZHEJIANG LEAPMOTOR TECH CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the problem that the connection between the existing bolt head protective cap and the bolt is not firm and the preservative on the surface of the bolt head is easily damaged, and provides a method that can strengthen the connection between the bolt head protective cap and the bolt without Bolt head protection caps for destroying preservatives on the bolt head surface

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
  • Bolt head protective cap
  • Bolt head protective cap
  • Bolt head protective cap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 with figure 2 As shown, a bolt head protective cap is used for the protection of hexagonal flange surface bolts 1, and the bolt head protective cap includes a first annular cavity 21 and a second annular cavity 22, and the first annular cavity 21 and the second annular cavity 22 The second annular cavity 22 matches the shape of the bolt, and the middle part of the inner wall of the first annular cavity 21 is provided with an annular protrusion 211 . The first annular cavity 211 cooperates with the head of the bolt, and the second annular cavity 22 cooperates with the flange surface. When the protective cap is installed on the bolt, the annular protrusion 211 interferes with the head of the bolt, thereby achieving The purpose of fixing the protective cap.

[0024] Specifically, the annular protrusion 211 is a structure with a high center and low sides, and the surface area of ​​the annular protrusion 211 away from the inner side wall of the first annu...

Embodiment 2

[0027] Such as image 3 with Figure 4 As shown, the annular protrusion 211 is provided with an inflatable cavity 3, and the connection between the first annular cavity 21 and the second annular cavity 22 is provided with an inflatable shell 4, and the inflatable shell 4 is provided with an inflatable device. An air pipe 41 is provided between the inflatable device and the inflatable cavity 3 . During the installation process of the protective cap, the inflator inflates the inflatable chamber 3 in the inflatable shell 4 through the air pipe 41, so that the annular protrusion 211 is higher than the inner wall surface of the first annular chamber 21, and interferes with the bolt 1, so as to achieve the bolt The purpose of fixing the head protection cap on the bolt 1; in addition, the gas is compressible and more flexible than ordinary flexible materials, which is more conducive to reducing the damage of the bolt head protection cap to the anti-corrosion agent on the bolt surfac...

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 a bolt head protective cap which is used for protecting a hexagonal flange bolt and comprises a first annular cavity and a second annular cavity, the first annular cavity and the second annular cavity are matched with the bolt in appearance, and an annular protrusion is arranged in the middle of the inner side wall of the first annular cavity. According to the bolt head protection cap, the head of the bolt can be separated from the external environment, direct contact between rainwater and the bolt is reduced, the corrosion phenomenon is reduced, the friction area between the bolt head protection cap and the bolt in the installation process is small, and damage to an anti-corrosion layer on the surface of the bolt can be reduced.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion bolts for automobiles, in particular to a bolt head protection cap. Background technique [0002] Bolts are a common fastener in the automobile production process, and many vehicles are exposed to the environment, and some bolts exposed on the surface of the body are easily rusted under long-term wind, sun, and rain , resulting in the corrosion and bonding of the bolt column and the bolt cap cover. In severe cases, it is necessary to use a nut splitter to deal with it. What's more, the bolt column is rusted and broken to cause an accident. Based on this, the surface of the bolt is basically coated with anti-corrosion agents (such as anti-corrosion layer, paint, butter) to block the erosion of rainwater and prevent the bolt head from rusting. However, in the process of automobile installation and maintenance, the workpiece used for loosening or tightening the bolts will directly contact the...

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): F16B33/00F16B41/00
CPCY02E10/72
Inventor 王茹贺少龙陈钲金
Owner ZHEJIANG LEAPMOTOR TECH CO LTD
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