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Metal gasket

A technology of metal gaskets and gaskets, which is applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problem of damaging the sealing function, and achieve the effect of low reaction force and excellent sealing effect

Inactive Publication Date: 2018-07-31
NOK CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, salt water or the like (not shown) intruding into the outside of the frame body O in the gap c causes corrosion (crevice corrosion) on the plane of the frame body 61, and if the corroded portion F penetrates the seal line SL, the sealing function will be destroyed.

Method used

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Examples

Experimental program
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Embodiment Construction

[0034] Hereinafter, embodiments of the present invention will be described based on the drawings.

[0035] figure 1 (A) and (B) show the metal gasket 11 according to the embodiment of the present invention. The metal gasket 11 according to this embodiment is a circular flat metal gasket formed in a ring shape. In addition, the metal gasket 11 is sandwiched between a pair of frames (housing, not shown, refer to Figure 5 or Figure 6 ) between the gaskets, as its function, to seal the internal space of the frame, and to seal external foreign matter such as salt water and deicing agent, thereby preventing external foreign matter from intruding into the gap between the frame and the gasket 11.

[0036] The metal gasket 11 has an annular linear portion 12 whose entire surface is planar from the inner peripheral portion 12a to the outer peripheral portion 12b. On the outer peripheral side of the linear portion 12, as a part of the linear portion 12, a plurality of jaws 13 (four...

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Abstract

The purpose of the present invention is to provide a metal gasket that can demonstrate an excellent sealing effect against foreign matter such as salt water, and moreover is provided with a structurehaving a low reactive force compatible with the situation in which the required sealing pressure is low when the metal gasket is in a fitted, in-use state. Provided to achieve said purpose is a metalgasket clamped between a pair of housings, said metal gasket sealing the inner space of the housings and inhibiting the penetration of foreign matter into gaps between the housings and the gasket, wherein the metal gasket has a straight section, the entire face of which is planar from the inner peripheral edge up to the outer peripheral edge, and a bending bead section that comes into contact withone of the housings is integrally provided to the outer peripheral edge of the straight section so as to be oriented diagonally outward, said bending bead section concurrently using an inward seal that seals the inner space of the housings and an outward seal that inhibits the penetration of foreign matter into gaps between the housings and the gasket.

Description

technical field [0001] The present invention relates to a gasket related to sealing technology, and more specifically, to a flat metal gasket having a flange structure on a plane. The metal gasket of the present invention can be used, for example, in the field of automobiles or in the field of general industrial machinery. Background technique [0002] For example, in metal gaskets used in automobile-related fields, there are cases where the car is driven in a seaside area or in a cold area in an area where deicing agent is scattered. As a standard evaluation item, a salt spray test is sometimes performed (especially for housing Electronic components, etc., and salt water, deicing agent, etc. may adhere to the engine compartment, etc.). In this case, if the frame (casing) on ​​which the metal gasket is installed is made of aluminum alloy (ADC12, etc.), salt water will remain (adhere) in the gap between the metal gasket and the frame, and after Repeated drying and wetting w...

Claims

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Application Information

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IPC IPC(8): F16J15/08
CPCF16J15/0818F16J15/0825
Inventor 丹治功渡边健相原主弥
Owner NOK CORP
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