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

Oil seal

An oil seal and body technology, applied in the field of oil seals, can solve the problems of decreased sealing effect, cumbersome manufacturing process, loss of sealing effect, etc., and achieve the effects of low manufacturing cost, long service life and good reliability

Inactive Publication Date: 2012-06-27
宁波信幸隆密封制品有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional oil seal is made of rubber material according to the structure of the workpiece to be sealed. For example, when the workpiece to be sealed is the shaft in the hydraulic cylinder, the shape of the oil seal is a ring with an opening matching the diameter of the shaft. Shaped rubber ring, the width of the rubber ring is suitable for the gap between the shaft and the cylinder wall of the hydraulic cylinder. The problem is that with the operation of the mechanical system, the parts are constantly worn, and the connection between the oil seal and the shaft will be damaged. There is a small gap, which leads to the continuous decline of its sealing effect until it loses its sealing effect; in view of this, an oil seal has appeared on the market, including an oil seal support composed of an annular skeleton, a rubber layer wrapped on the outer surface of the oil seal support, and the rubber layer and The contact part of the seal forms a sealing lip, and a locking spring is provided in the ring groove of the rubber layer corresponding to the sealing lip. The oil seal with this structure is provided with a spring, so when there is a gap between the components, The locking spring can give the oil seal a self-tightening force, that is, to ensure that the oil seal continues to closely cooperate with the sealing parts. The oil seal with the above structure can better solve the defect of the oil seal’s sealing performance caused by mechanical wear, but the oil seal with this structure only It is suitable for sealing shaft parts, but not suitable for the sealing of joints of parts such as box cover bolts and pipe flanges. In addition, due to the need to add a locking spring in the oil seal, the manufacturing process is cumbersome and the cost is relatively high

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
  • Oil seal
  • Oil seal
  • Oil seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: see figure 1 , the working state diagram of the oil seal used to seal the shaft, the oil seal includes a body 1, the body 1 is a hollow cylinder made of elastic wire mesh, the outer surface of the body 1 is covered with a rubber layer 3, The rubber layer 3 can be made of nitrile rubber, fluororubber, silicone rubber, acrylate rubber, etc., of course, can also use polytetrafluoroethylene, polyurethane and other similar materials. The inner wall of the rubber layer 3 is close to the outer surface of the shaft 7. On the surface, the outer wall of the rubber layer 3 is close to the inner surface of the outer diameter box body 5. When it is worn for a long time, the inner wall of the rubber layer 3 can still be close to the shaft because the body 1 is made of wire mesh and is elastic. 7. The outer wall of the rubber layer 3 is close to the inner surface of the outer diameter box body 5, so that the sealing effect is not easy to reduce, and the present invention ca...

Embodiment 2

[0035] Example 2: see figure 2 , the oil seal is used to seal the working state diagram of the box cover, the oil seal includes a body 1, the body 1 is a hollow cylinder made of elastic wire mesh, the outer surface of the body 1 is covered with a rubber layer 3, The upper end surface of the rubber layer 3 leans against the lower end surface of the bolt cap 11, the lower end surface of the rubber layer 3 leans against the upper end surface of the box cover 9, and the inner side wall of the rubber layer 3 is close to the outer surface of the bolt. When loosening, since the body 1 is made of wire mesh and is elastic, the upper end surface of the rubber layer 3 can still lean against the lower end surface of the bolt cap 11, and the lower end surface of the rubber layer 3 can lean against the upper end surface of the box cover 9 , the inner wall of the rubber layer 3 is in close contact with the outer surface of the bolt, maintaining a good sealing effect all the time.

Embodiment 3

[0036] Embodiment 3: see image 3 , the oil seal is used to seal the upper and lower pipeline flanges 13, 15 working state diagram, the oil seal includes a body 1, the body 1 is a hollow cylinder made of elastic wire mesh, the outer surface of the body 1 Covered with a rubber layer 3, the upper end surface of the rubber layer 3 is against the lower end surface of the upper flange 13, and the lower end surface of the rubber layer 3 is against the upper end surface of the lower flange 15. When the bolts are slightly loose, due to the body 1 Made of wire mesh, it is elastic, and the upper end surface of the rubber layer 3 can still be pressed against the lower end surface of the upper flange 13, and the lower end surface of the rubber layer 3 can be pressed against the upper end surface of the lower flange 15, so as to maintain a good seal Effect.

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 oil seal comprising a body which is an elastic metal silk screen. Part or full of rubber layer is coated on an external surface of the body. The invention uses the elastic metal silk screen as a framework. The framework is compressed when pressure suffered is increased and is diffused externally when pressure suffered is decreased so that the framework contacts well withthe sealed component to maintain great seal property. The invention can seal shaft and connection of case cover bolt and pipe flange. In addition, the invention can be integrally formed in simple structure and low cost.

Description

technical field [0001] The invention relates to an oil seal, which can be widely used in the connection of shaft ends, box cover bolts, pipeline flanges and the like. Background technique [0002] The oil seal is an important part of the mechanical system. Its main function is to prevent the liquid medium from leaking from the sealed mechanism. Due to the requirements of its working environment, the oil seal needs to have certain elasticity and low leakage rate, so it is mostly made of rubber materials. . [0003] The traditional oil seal is made of rubber material according to the structure of the workpiece to be sealed. For example, when the workpiece to be sealed is the shaft in the hydraulic cylinder, the shape of the oil seal is a ring with an opening matching the diameter of the shaft. Shaped rubber ring, the width of the rubber ring is suitable for the gap between the shaft and the cylinder wall of the hydraulic cylinder. The problem is that with the operation of 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
Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/16F16J15/32F16J15/3204F16J15/3248
Inventor 袁奕琳汪水方
Owner 宁波信幸隆密封制品有限公司
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