Electronic circuit board case

Abstract

A case for housing an electronic circuit board having a case body formed with an opening and a sealing member for sealing the opening, wherein one of the case body and the sealing member is formed with one fastening member composed of an elastically deformable leg and a projection continuous therewith for enabling attachment of the sealing member to the case body by engagement of the fastening member with a prescribed region of the other. The projection is continuous with the leg and has a first surface formed to contact the prescribed region at a prescribe angle and a second surface continuous with the first surface and formed parallel to the prescribed region. With this, molding error can be tolerated and stress owing to volumetric variation produced by temperature change or to vibration can be readily coped with. Moreover, it is possible to prevent release of the engagement of the projection with the prescribed region, and thus to prevent separation of the sealing member from the case body.

Dependencies are inferred from the claim text.