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Sealing device

A sealing device and resin sealing technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve problems such as the increase in the number of components, and can prevent the sealing device from moving together with the shaft and the resin sealing ring from moving together with the shaft. Effect

Active Publication Date: 2019-04-16
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to mount the ring member 650 on the casing 600, so that there is also a problem that the number of parts increases.

Method used

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Experimental program
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Embodiment Construction

[0032] Hereinafter, specific embodiments of the present invention will be exemplarily described in detail with reference to the drawings and based on embodiments. In addition, the size, material, shape, relative arrangement, etc. of the constituent components described in this embodiment, unless otherwise specified, do not limit the scope of the present invention to these.

[0033] (Example)

[0034] Reference Figure 1 ~ Figure 3 The sealing device according to the embodiment of the present invention will be described. figure 1 It is a schematic cross-sectional view of a sealing device according to an embodiment of the present invention. The sealing device is roughly rotationally symmetrical in shape. figure 1 The middle figure shows a cross-sectional view of the sealing device cut along the plane including the center axis of the sealing device. In addition, below, the "axial direction" refers to the direction in which the central axis of the sealing device extends. figure 2 ...

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Abstract

Provided is a sealing device configured so that, when a shaft and a housing move relative to each other, the sealing device is prevented from moving with the shaft. A resin seal ring 100 is provided with: a circular cylinder section 110; a pair of inner peripheral lips 120 respectively provided on both axial sides of the circular cylinder section 110; a pair of outer peripheral lips 130 respectively provided on both axial sides of the circular cylinder section 110; and an annular mounting groove 111 which is provided in the outer peripheral surface of the circular cylinder section 110 and in which an elastic material seal ring 300 is mounted. A sealing device is characterized in that the inner peripheral surface side and the outer peripheral surface side of the pair of inner peripheral lips 120 decrease in diameter toward lip tips 121 with increasing distance from the circular cylinder section 110, the lip tips 121 being capable of sliding on the outer peripheral surface of a shaft. Both the inner peripheral surface side and the outer peripheral surface side of the pair of outer peripheral lips 130 increase in diameter toward lip tips 131 with increasing distance from the circularcylinder section 110, the lip tips 131 being in close contact with the inner peripheral surface of a shaft hole in a housing.

Description

Technical field [0001] The invention relates to a sealing device for sealing an annular gap between a relatively moving shaft and a housing. Background technique [0002] A technique for exhibiting an excellent sealing function with respect to both sides in the axial direction in a sealing device that seals the annular gap between the relatively moving shaft and the housing is being explored. Figure 4 A schematic cross-sectional view of the sealing structure of the sealing device using virtual technology. The illustrated sealing device 700 has a function of sealing the annular gap between the relatively moving shaft 500 and the housing 600. An annular cutout 610 is provided on the inner peripheral surface of the shaft hole of the housing 600, and an annular member 650 is fitted on the top end of the housing 600. Thus, an annular groove for the sealing device 700 to be assembled is formed. In addition, the sealing device 700 is made of a resin material. In addition, the sealing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/3236F16J15/18F16J15/3232
CPCF16J15/3236F16J15/3232F16J15/18F16J15/3212
Inventor 门马弘明
Owner NOK CORP
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