Sealing cushion

A sealing gasket and sealing lip technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of difficult elastic deformation, poor installation, difficult to press into the opening of the casing, etc., to eliminate the bad situation. Effect
CN1993577AInactive Publication Date: 2007-07-04NOK CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NOK CORP
Publication Date
2007-07-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

A gasket installed on the inner peripheral surface of an opening of a housing such as a cylinder head cover and sealing the gap between the housing and an insertion member such as a plug tube inserted in the opening. The gasket has good installability, so that, even if the inner diameter of the opening is not made to high precision, an outer periphery installation section of the gasket is prevented from being nipped in fitting of the gasket into the housing, or the gasket can be reliably fitted into the housing. To achieve the above, the outer diameter of the outer periphery installation section is set equal to or less than the inner diameter of the opening, and a tightening allowance setting means and a radial direction positioning means are provided on an outer peripheral section of the outer periphery installation section of the gasket. The tightening allowance setting means sets a tightening allowance of the gasket relative to the inner peripheral surface of the opening, and the radial direction positioning means performs radial positioning of the gasket relative to the inner peripheral surface of the opening. The tightening allowance setting means is inclined in the axially opposite direction to the direction of fitting of the gasket into the housing and has a lip shape whose outer diameter in a free state is set greater than the inner diameter of the opening.
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Description

technical field

[0001] The invention relates to a gasket in a sealing device. The gasket of the present invention is used in the field of automobiles or general production machinery, for example, it is used to seal between the cylinder head and the spark plug barrel of the internal combustion engine in the automobile related field, or between the cylinder head and the injection pipe. Background technique

[0002] In order to seal, for example, between the cylinder head and the spark plug barrel in an internal combustion engine, a spark plug barrel gasket 51 as shown in FIG. , which are integrally formed with: an outer peripheral mounting portion 53, which is pressed into the inner peripheral surface 52b of the opening portion 52a of the cylinder head 52 as a housing; the outer peripheral surface 54 a of the spark plug barrel 54 ; and, the eccentric driven portion 56 provided between the outer peripheral mounting portion 53 and the seal lip portion 55 .

[0003] However, in...

Claims

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