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Lip type seal

a technology of sealing and spherical seals, applied in the direction of engine sealings, engine components, mechanical equipment, etc., can solve the problems of deteriorating sealing performan

Inactive Publication Date: 2001-11-08
EAGLE INDS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some case, breakage is produced from the entering portion and the sealing performance may be deteriorated.

Method used

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Examples

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Embodiment Construction

[0013] FIG. 1 shows a preferred embodiment of a lip type seal according to the present invention. In FIG. 1, reference numeral 1 designates a housing of a shaft hole part of an equipment, numeral 2 designates a rotary shaft which is loosely inserted in a shaft hole 11 of the housing 1 and is rotatable around an axial center O, and numeral 3 designates a lip type seal which is installed to a seal installation part 12 formed enlargedly from the shaft hole 11 of the housing 1, and seals a shaft circumference of the rotary shaft 2, respectively.

[0014] The lip type seal 3 has an outer ring part 31 which is force fitted to a cylindrical fit surface 12c of the seal installation part 12 in the housing 1. In an inner circumference of the outer ring part 31, a seal main body 32 and a rear surface support plate 33 arranged on the rear side of the seal main body 32 are fixed. A movable support plate 34 is engaged movably in a radial direction between the seal main body 32 and the rear surface s...

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PUM

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Abstract

A lip type seal is provided with an outer ring part (31) which is tightly fitted to a seal installation part (12) of a housing (1); a seal main body (32) which is fixed to the outer ring part (31) and whose inner circumferential part extending in a bent state to the side of a sealed space (A) is sealably brought into slidable contact with an outer circumferential surface of a rotary shaft (2) inserted in the housing (1); a rear surface support plate (33) which is arranged on the rear side of the seal main body and whose outer circumferential part together with the seal main body (32) is fixed to the outer ring part (31); and a movable support plate (34) which is engaged movably in a radial direction between the seal main body (32) and the rear surface support plate (33) and whose inner diameter is clearance fitted to the outer circumferential surface of the rotary shaft (2). Therefore, such a gap in which the seal main body (32) enters is not formed between the inner circumferential surface of the movable support plate (34) and the outer circumferential surface of the rotary shaft (2).

Description

[0001] The present invention relates to a lip type seal which seals the circumference of a rotary shaft of various sorts of equipments.PRIOR ART[0002] As shaft seal technology using a lip type seal, have a structure as shown in FIG. 4 is conventionally known.[0003] In FIG. 4, reference numeral 100 designates a housing of a shaft hole part of an equipment. Numeral 200 designates a lip type seal which is installed to a seal installation part 101 formed on an inner circumferential surface of the housing 100, and seals the circumference of a rotary shaft 102.[0004] In the lip type seal 200, on an inner circumference of an outer ring part 201 with a packing 201a and a metal ring 201b fixed integrally, a seal main body 202 constituted by an annular sheet made of a synthetic resin such as a fluorine resin and a rear surface support plate 203 constituted by an annular metal plate disposed on the rear side of the seal main body 202 are fixed by caulking of the metal ring 201b. The outer ring...

Claims

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Application Information

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IPC IPC(8): F16J15/3252
CPCF16J15/3216F16J15/3224F16J15/3228
Inventor IKEDA, YASUHIROYAMADA, TAKESHIIMAI, TAKAYUKI
Owner EAGLE INDS