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Sealing device

A sealing device and component technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems such as damage to the end face lip 62, large suction effect of the oil thrower 51, oil leakage, etc., to achieve improved sealing performance. Effect

Active Publication Date: 2015-04-08
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the suction effect of the flinger 51 is large, so that a large amount of dust outside the machine (atmosphere side) B is sucked in, and thus the end face lip 62 may be damaged and oil leakage may occur.

Method used

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Examples

Experimental program
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Embodiment

[0059] Embodiments of the present invention will be described below with reference to the drawings.

no. 1 example …

[0061] figure 1 A main part cross section of the sealing device according to the first embodiment of the present invention is shown. The sealing device according to this embodiment can be used, for example, as an engine seal in the field of automobiles, and prevents oil in the engine A from leaking to the outside B of the engine, and prevents dust outside the engine B from entering the engine A. In addition, the sealing device according to this embodiment can be suitably used as a seal for a diesel or gasoline engine in which lubricating oil exists in the engine interior A.

[0062] The sealing device according to this embodiment has an oil slinger 11 attached to one of two parts that rotate relatively (for example, a shaft, not shown) and a member (for example, a shaft housing, not shown) attached to the other. Shown) the lip member 21, and constituted by the combination of these parts.

[0063] The flinger 11 is made of a metal material, and a flange portion (outward flan...

no. 2 example …

[0076] figure 2 A main part cross section of the sealing device according to the second embodiment of the present invention is shown. The sealing device according to this embodiment can be used, for example, as an engine seal in the field of automobiles, and prevents oil in the engine A from leaking to the outside B of the engine, and prevents dust outside the engine B from entering the engine A. In addition, the sealing device according to this embodiment can be suitably used as a seal for a diesel or gasoline engine in which lubricating oil exists in the engine interior A.

[0077] The sealing device according to this embodiment has an oil slinger 11 attached to one of two parts that rotate relatively (for example, a shaft, not shown) and a member (for example, a shaft housing, not shown) attached to the other. ) The lip member 21 is constituted by a combination of these members.

[0078] The flinger 11 is made of a metal material, and a flange portion (outward flange por...

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PUM

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Abstract

Provided is a sealing device formed by combining a slinger and a lip member, the sealing device being configured so as to improve the sealing properties thereof, particularly the sealing properties against outside dust. In order to obtain such properties, the sealing device has a slinger mounted to one of two members rotating relative to each other and also has a lip member mounted to the other of the two members, the slinger being integrally provided with a cylindrical section fitted to the one member, and with a flange section extending in the radial direction, the lip member having an end face lip in close contact with the flange section in a slideable manner. The sealing device is characterized in that a bent section protruding in the axial direction toward the lip member is provided to the flange section and in that a labyrinth structure provided with a minute gap is provided between the bent section and the lip member.

Description

technical field [0001] The invention relates to a sealing device related to sealing technology. The sealing device of the present invention can be used as a rotary oil seal in the field of automobiles, or can be used as a rotary oil seal in the field of general machinery, for example. In addition, the sealing device of the present invention can also be suitably used as a seal for an engine in which lubricating oil exists in the engine. Background technique [0002] Previously, it was known that image 3 The sealing device (end face lip type oil seal) shown in , which has the oil flinger 51 installed on one of the two parts that rotate relatively (such as the shaft 71) and the other part (such as the shaft housing, not shown) lip member 61, on the former oil slinger 51, a cylindrical portion 52 fitted to one member and a flange portion 53 extending in the radial direction are integrally provided, and at the same time, the rear The lip member 61 is provided with an end face ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32F16J15/3204
CPCF16J15/3264F16J15/4476F16J15/002F16J15/3204F16J15/447
Inventor 松井宏树佐藤志保
Owner NOK CORP