Gasket

摘要

Provided is a gasket which can improve a handling property of the gasket by enhancing a rigidity of a carrier, can secure a space saving without increasing a thickness of the gasket, and can improve a yield ratio of a resin material, in the gasket of a type that a gasket body is integrated with the resin carrier. A planar gasket used by being pinched between two members superposed with each other has a gasket body achieving a seal action, and a carrier retaining the gasket body, the carrier is formed as a predetermined planar shape by a metal mold with a resin material, and is formed as a stepped shape by setting a partial portion which is superposed with the gasket body on a plane to a thin portion, and setting the other portion which is not superposed with the gasket body on the plane to a thick portion.

主权项

1. A planar gasket adapted to be pinched between two members which are superposed with each other, the gasket comprising:
a gasket body which forms a seal between the two members; and a carrier which retains said gasket body, wherein said carrier is formed to a predetermined planar shape by a metal mold with a resin material, and has a stepped shape including:
a thin partial portion which is superposed with said gasket body on a plane, anda thick portion which is not superposed with said gasket body on the plane, and wherein said gasket body has a C-shaped superposed portion which is superposed with said thin partial portion of said carrier on the plane and a non-superposed portion which is not superposed with said thin partial portion, and a pair of seal lips oppositely extend from the superposed portion, and the thin partial portion has a thickness t1, the thick portion has a thickness t2, the superposed portion has a thickness t3, and a thickness between leading ends of the pair of seal lips is t5,
t3=t2, t3>t1, and t5>t3, wherein said gasket body and said carrier are provided with a retaining structure for preventing said gasket body and said carrier from coming off from each other, and wherein said retaining structure is constructed by and engagement of said gasket body with a three-dimensional shape selected from a group including a convex portion, a concave portion or a through hole which is provided in said carrier.