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Surface processing method of disc component of sealing device and sealing device

A technology for sealing devices and disc components, which can be used in engine sealing, metal processing equipment, surface polishing machine tools, etc., and can solve problems such as static leakage

Active Publication Date: 2020-07-07
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a conventional end-face contact type sealing device, as described above, when the oil slinger rotates, the sealing object that seeps out can be returned to the sealing object side by the pumping action, but when the oil slinger stops , so-called static leakage sometimes occurs, that is, the object to be sealed leaks from the gap formed between the groove of the flinger ring and the end face lip

Method used

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  • Surface processing method of disc component of sealing device and sealing device
  • Surface processing method of disc component of sealing device and sealing device
  • Surface processing method of disc component of sealing device and sealing device

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Experimental program
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Embodiment Construction

[0030] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0031] figure 1 is a cross-sectional view taken along the axis x for showing the schematic structure of the sealing device 1 according to the embodiment of the present invention, figure 2 It is a partially enlarged cross-sectional view showing an enlarged part of the cross-section along the axis x of the sealing device 1 .

[0032] The sealing device 1 according to the embodiment of the present invention is a sealing device for sealing an annular gap between a shaft and a hole into which the shaft is inserted. etc. between the holes (shaft holes) into which the shaft is inserted. For example, it is used to seal an annular space between a crankshaft of an engine and a crankshaft hole formed in a front cover, a cylinder block, and a crankcase. In addition, the object to which the sealing device 1 is applied is not limited to the above.

[0033] Hereinafter, for the c...

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Abstract

Provided are a sealing device capable of preventing static leakage of an object to be sealed without increasing sliding resistance with respect to a shaft, and a surface processing method of a disk member such as an oil slinger provided in the sealing device, the method being capable of easily machining the surface of the disk member such as the oil slinger. The surface processing method in whicha plurality of spiral micro grooves are formed on the surface (31d) of a disc member (3) of the sealing device is characterized in that a grinding member (64) having a plurality of minute projectionsis moved toward the outer edge (arrow c) while pressing against the surface (31d) of the disc member (3) relatively rotating about an axis (y). The sealing device is characterized in that a face on the other side of the flange is provided with a slinger (3) on which the plurality of spiral micro grooves are randomly formed.

Description

technical field [0001] The present invention relates to a surface processing method of a disk member of a sealing device in which a plurality of spiral micro grooves are formed on the surface of a disk member of a sealing device, and a method for realizing a gap between a shaft and a hole into which the shaft is inserted. hermetic sealing device. Background technique [0002] In vehicles, general machinery, etc., in order to prevent leakage of sealing objects such as lubricating oil, a sealing device is conventionally used to seal between a shaft and a hole into which the shaft is inserted. In such a sealing device, sealing between the shaft and the sealing device is achieved by bringing the sealing lip into contact with the shaft or an annular member mounted on the shaft. Among such sealing devices, there is a so-called end-face contact type sealing device. The face contact type seal device prevents leakage of the sealing object by bringing the seal lip extending along th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/00B24B1/00B24B29/04F16J15/3232F16J15/3244
CPCF16J15/328F16J15/3232B24B29/04F16J15/3244B24B1/00B24B7/10F16J15/164F16J15/3256F16J15/3416F16C33/7816F16C33/74
Inventor 米内寿斗坂野祐也井上雅彦
Owner NOK CORP
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