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Gasket

A gasket and main seal technology, applied in the field of gaskets, can solve the problems of gasket sealing surface inclination, distance widening, etc.

Active Publication Date: 2020-11-10
ISHIKAWA GASKET CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] By the way, there are problems in the gasket that the distance in the vertical direction between the cylinder head and the cylinder block becomes wider when the cylinder head lift occurs when the combustion pressure of the gas in the cylinder rises, and that when the engine is running due to cold and heat The sealing surface of the gasket tilts when the deformation caused by the influence creates a depression in the cylinder block and / or cylinder head

Method used

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Embodiment Construction

[0015] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, x should be the vertical direction (up-down direction) and thickness direction (lamination direction) of the gasket 20, and y and z should be directions orthogonal to the x direction and to each other. By the way, in Figure 1-4 In , the dimensions have been changed to make the construction easier to understand, and the dimensions do not necessarily correspond to the proportions in the actual manufactured product.

[0016] Such as Figure 1-4 As illustrated, the gasket 20 of this embodiment is a cylinder head gasket assembled in the engine 10 , located between the cylinder block 11 and the cylinder head 12 and fastened by bolts 13 .

[0017] Such as figure 1 As illustrated, four cylinder holes 14 and water / oil holes 15 as holes to be sealed are formed on the cylinder block 11, and the water / oil holes 15 are, for example, water holes for wa...

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Abstract

The present invention provides a gasket capable of reliably preventing fluid leakage without deteriorating sealing performance even when a drop in surface pressure at the periphery of a through hole occurs. A primary sealing structure (31a) located radially inside the peripheral end (29a) and a secondary sealing structure (32a) located radially externally of the peripheral end (29a) are formed, wherein the primary sealing structure (31a) includes The laminated upper layer main reinforcement (33a) formed on the upper layer (21), the middle layer main reinforcement (34a) formed on the second plate (28) of the middle layer (22) and the lower layer main reinforcement (35a) formed on the lower layer (23), And the auxiliary sealing structure (32a) includes the upper layer auxiliary ribs (36a) formed on the upper layer (21) and the intermediate layer auxiliary ribs (37a) formed on the second plate (28) of the middle layer (22) stacked in the x direction And the lower secondary ribs (38a) formed in the lower layer (23).

Description

technical field [0001] The present invention relates to gaskets, and more particularly to a gasket with improved sealing properties. Background technique [0002] As a gasket of a three-layer structure sandwiched between the cylinder head and the cylinder block, there has been proposed a gasket in which a folded portion around the through hole is formed in the middle layer, and the upper and lower layers are respectively formed around the through hole and have opposing A bead having a vertically symmetrical shape on the middle layer (see, for example, Japanese Patent Application Laid-Open No. 1999-118038 (Patent Document 1)). Contents of the invention [0003] The technical problem to be solved in the present invention [0004] By the way, there are problems in the gasket that the distance in the vertical direction between the cylinder head and the cylinder block becomes wider when the cylinder head lift occurs when the combustion pressure of the gas in the cylinder rises...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/08F02F11/00
CPCF02F11/002F16J15/0825F16J2015/085F16J2015/0862B32B15/011F16J2015/0837B32B2581/00
Inventor 安田纪章吉原昭今田裕规矢野昌之梶原邦俊
Owner ISHIKAWA GASKET CO LTD