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

Seal ring

a sealing ring and sealing technology, applied in the field of sealing ring, can solve problems such as metal wear on the other side, and achieve the effect of suppressing abrasion of the housing

Inactive Publication Date: 2011-02-17
NOK CORP
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019]According to the present invention, a technique capable of suppressing sandwiching of a foreign matter between a seal ring and a housing and suppressing abrasion of the housing and the seal ring can be provided.

Problems solved by technology

In the case of using such a material for a sliding member in a seal ring, it is concerned that the seal ring slides in a state where a foreign matter enters an outer peripheral face of the seal ring, and metal on the other side wears.

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
  • Seal ring
  • Seal ring
  • Seal ring

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0026]With reference to FIGS. 1 to 3, a seal ring 1 according to a first embodiment of the present invention will be described. FIG. 1 is a plan view of the seal ring according to the embodiment. FIG. 2 is a partially-broken perspective view showing a main part of the seal ring 1 according to the embodiment. FIG. 3 is a schematic section showing the seal ring 1 according to the embodiment.

[0027]The seal ring 1 is provided to seal (hermetically close) an annular gap between a housing 80 as another member provided with a shaft hole and a shaft 70 as one member inserted in the shaft hole, and is used by being attached in an annular groove 71 provided for the shaft 70.

[0028]The seal ring 1 is made of a resin material and has a first seal portion 4 for sealing a sidewall face 72 on a side A of a fluid which is not to be sealed in the annular groove 71 and a second seal portion 3 for sealing an inner peripheral face 81 of the shaft hole provided for the housing 80.

[0029]When a pressure is...

second embodiment

[0046]FIG. 4(A) is a plan view of a seal ring 10 according to a second embodiment of the invention and is a diagram showing the seal ring 10 at the time of molding (at the time of manufacture), and FIG. 4(B) is a view of the seal ring 10 and is a diagram showing the seal ring 10 subjected to an additional process (shaping process) after molding. FIG. 5 is a diagram for explaining attachment of the seal ring. The basic configuration of the seal ring 10 in the embodiment is similar to that of the seal ring 1 described in the first embodiment. The same reference numerals are denoted to likewise components and their description will not be repeated.

[0047]In the first embodiment, the outer diameter of the seal ring 1 is set to be larger than the inner diameter of the housing 80. However, at the time of attaching the seal ring, depending on the structure of equipment to which the seal ring is applied, it is concerned that the outer periphery of the seal ring 1 interferes the housing 80 (p...

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

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Fractionaaaaaaaaaa
Sizeaaaaaaaaaa
Login to View More

Abstract

Sandwiching of a foreign matter between a seal ring and a housing is suppressed, and abrasion of the housing and the seal ring is suppressed. The size of the diameter of a second seal portion 3 is set to be larger than the size d2 of the diameter of an inner peripheral face 81 so that the difference in diameter size between the second seal portion 3 and an inner peripheral face 81 of a housing 80 becomes 1.0 mm or less in a state before the ring body is provided in the annular gap.

Description

TECHNICAL FIELD[0001]The present invention relates to a seal ring for sealing an annular gap between two members which are provided movable relative to each other.BACKGROUND ART[0002]In recent years, there is a need to reduce a leak amount in a seal ring used for various hydraulic devices (particularly, an automatic transmission for a car) for the purpose of improvement in controllability and performance of the devices.[0003]As a measure to reduce a leak amount, a demand for a seal ring made of a resin such as PEEK or PPS manufactured by injection molding, in which the shape of a cut provided in a place in the circumference of the seal ring is set as a special step cut is increasing.[0004]On the other hand, in the interest of reduction in weight of a device on the other side, miniaturization, and VA (value analysis), use of a material which is not desirable as a sliding member such as aluminum or rolled soft steel is increasing. In the case of using such a material for a sliding mem...

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): F16J15/16
CPCF16J15/3272F16J15/3488F16J15/441Y10T29/49863
Inventor EGUCHI, NOBUYUKI
Owner NOK CORP
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