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Sealing device

A technology of sealing device and installation part, which is applied to the sealing of the engine, the steering control installed on the car, the steering column, etc., which can solve the problems of time-consuming and labor-intensive production and installation of low-friction sliding materials, and achieve the effect of strengthening the shock-absorbing part

Active Publication Date: 2009-11-18
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the prior art described above, when a low-friction sliding material made of Teflon (registered trademark) is provided on the inner peripheral surface of the shock absorber 55 , the low-friction sliding material is formed into a thin film and sintered on the damping part 55, so the manufacture and installation of the low-friction sliding material is time-consuming and laborious

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0072] figure 1 A section of a sealing device 1 according to a first embodiment of the present invention is shown, which is used as a steering dustproof seal in vehicles such as automobiles, and is used for a housing and a steering shaft (not shown) as a shaft inserted through the housing. out) between the seal.

[0073] This sealing device 1 has a molded product 11 in which a shock absorbing portion 16 and a sealing lip portion 17 are integrally formed on the inner peripheral side of an outer peripheral mounting portion 12 fixed to the housing through a corrugated flexible portion 15 . The surface is provided with a detachment-preventing holding part 19, and the sliding member 20 made of resin is fitted into this detachment-preventing holding part 19. In addition, the sealing device 1 has a molded product 11 in which the shock absorbing portion 16 and the sealing lip portion 17 are integrally formed on the inner peripheral side of the outer peripheral mounting portion 12 fi...

no. 2 example

[0082] figure 2 A section is shown of a second embodiment of a sealing device 1 of the present invention, which is used as a steering dust seal for connection between a housing and a steering shaft (not shown) as a shaft inserted through the housing. seal.

[0083] This sealing device 1 has a molded product 11 in which a shock absorbing portion 16 and a sealing lip portion 17 are integrally formed on the inner peripheral side of an outer peripheral mounting portion 12 fixed to the housing through a corrugated flexible portion 15 . The surface is provided with a detachment-preventing holding part 19, and the sliding member 20 made of resin is fitted into this detachment-preventing holding part 19. In addition, the sealing device 1 has a first molded product 11 in which the shock absorbing portion 16 and the sealing lip portion 17 are integrally formed on the inner peripheral side of the outer peripheral mounting portion 12 fixed to the housing through the corrugated flexible ...

no. 3 example

[0092] image 3 A section of a sealing device 1 according to a third embodiment of the present invention is shown, which is used as a steering dust seal for connection between a housing and a steering shaft (not shown) as a shaft inserted through the housing. seal.

[0093] This sealing device 1 has a molded product 11 in which a shock absorbing portion 16 and a sealing lip portion 17 are integrally formed on the inner peripheral side of an outer peripheral mounting portion 12 fixed to the housing through a corrugated flexible portion 15 . The surface is provided with a detachment-preventing holding part 19, and the sliding member 20 made of resin is fitted into this detachment-preventing holding part 19. In addition, the sealing device 1 has a first molded product 11 in which the shock absorbing portion 16 and the sealing lip portion 17 are integrally formed on the inner peripheral side of the outer peripheral mounting portion 12 fixed to the housing through the corrugated f...

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Abstract

A sealing device in which squealing noise occurring when a steering shaft is in strong intimate contact with a bumper portion is effectively suppressed and in which a slide member for preventing squealing noise can be easily fixed to the bumper portion. The sealing device (1) for sealing between a housing and a shaft inserted into the housing has a first molding (11) in which the bumper portion (16) and a seal lip portion (17) are integrally molded, with a bellows-like flexible portion (15) in between, on the inner peripheral side of an outer peripheral fixing portion (12) secured to the housing. The sealing device (1) also has a second molding (21) in which a second bumper portion (26) is integrally molded, with a second flexible portion (25) in between, on the inner peripheral side of asecond fixing portion (22) secured to the outer peripheral fixing portion (12). Fall out prevention portions (19, 29) are respectively provided on the inner peripheral surfaces of the bumper portion (16) and second bumper portion (26), and resin slide members (20, 30) are fitted without bonding to the fall out prevention portions (19, 29), respectively.

Description

technical field [0001] The present invention relates to a sealing device, and in more detail, relates to a sealing device suitable for use as a steering dustproof seal. The sealing device of the present invention can also be used in general-purpose machines and the like in addition to the fields related to automobiles. Background technique [0002] Since before, as Figure 7 As shown, as a sealing device 51 between a sealed housing (not shown) and a shaft 52 inserted through the housing, there is known a corrugated flexible portion 54 on the inner peripheral side of an outer peripheral mounting portion 53 fixed to the housing. The sealing device 51 of the shock absorbing portion 55 and the sealing lip portion 56 is integrally formed. The shaft 52 is, for example, a steering shaft of an automobile, and the sealing device 51 is used to seal dust and the like on the outer periphery of the steering shaft 52 . [0003] The steering shaft 52 is eccentric with respect to the hous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16J15/32
CPCF16J3/042B62D1/16F16J15/32F16J15/52
Inventor 神前刚宗形忍小林直人樽川雄一
Owner NOK CORP
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