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Seal ring and sealing structure

A sealing structure and sealing ring technology, which is applied in the direction of engine sealing, piston rings, belts/chains/gears, etc., can solve problems such as the troublesome operation of replacing the sealing ring, and achieve the suppression of touching the front end of the housing, increasing the thickness, reducing the The effect of small offsets

Active Publication Date: 2017-11-03
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in the case of AT and CVT for automobiles, damage to the seal ring can be confirmed by inspection after the AT and CVT are assembled, so the work of replacing the seal ring is very troublesome.

Method used

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  • Seal ring and sealing structure
  • Seal ring and sealing structure
  • Seal ring and sealing structure

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Effect test

Embodiment Construction

[0047]Hereinafter, referring to the drawings, embodiments for implementing the present invention will be described in detail based on examples. However, the dimensions, materials, shapes, relative arrangements, and the like of the constituent elements described in the embodiments are not limited to the scope of the present invention unless otherwise specified.

[0048] (Example)

[0049] refer to Figure 1 to Figure 8 , the sealing ring and the sealing structure of the embodiment of the present invention will be described. It should be noted that, in transmissions such as AT and CVT for motor vehicles, the seal ring and the seal structure of this embodiment are used to seal the annular gap between the relatively rotating shaft and the housing in order to maintain oil pressure. In addition, in the following description, "high pressure side" refers to the side that becomes high pressure when a pressure difference is generated on both sides of the seal ring, and "low pressure s...

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Abstract

Provided are a seal ring and a sealing structure that reduce the deviation of the central axis of the seal ring from the central axis of a shaft thereby preventing the seal ring from abutting against the tip end of a housing in the operation of inserting the shaft in the housing. The seal ring is constituted by a thin part (100A) which is thin in a radial direction thereof and provided in a range less than 180 degrees with respect to a circumferential direction and a thick part (100B), which is configured to protrude inward in the radial direction from an inner peripheral surface of the thin part (100A), to be thicker in the radial direction than the thin part (100A), the thin part (100A) has an abutment joint part (110), and the thick part (100B) has, at respective ends of both side surfaces on an inner peripheral surface side thereof, a concave part (120) over an entire range thereof to form a gap between the ends of the both side surfaces and corner parts at both ends of a groove bottom of the annular groove.

Description

[0001] This application is a divisional application of the invention patent application after the PCT international application with the application number PCT / JP2015 / 067556 entered the Chinese national phase, and thus requires the same prior application as the invention patent application that entered the Chinese national phase (that is, Japan Invention patent application JP2015-005072) priority. technical field [0002] The invention relates to a sealing ring and a sealing structure for sealing the annular gap between the shaft and the shaft hole of the casing. Background technique [0003] For example, an automatic transmission (AT: Automatic Transmission) and a continuously variable transmission (CVT: Continuously Variable Transmission) for a motor vehicle have a seal ring installed in an annular groove provided on the outer peripheral surface side of the shaft, and the shaft and the housing The annular gap between them is sealed. In this technique, a shaft with a seal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32F16J15/3208
CPCF16J15/32F16J15/3208B29C43/02B29C51/08F16J9/20F16J15/441F16H57/029F16J15/3496
Inventor 关一成
Owner NOK CORP