Valve case for oil control valve

摘要

A valve case includes a housing portion including a cylindrical space for housing a spool of an oil control valve, and a wall portion including a drain space arranged cross to the cylindrical space. The housing portion and the wall portion are integrally formed.

主权项

1. A valve case disposed within a cylinder head cover, comprising:
a housing portion including a cylindrical space for housing a spool of an oil control valve which enters one axial end of the cylindrical space in a direction parallel to a central axis of the cylindrical space; and a wall portion including a drain space arranged in its depth direction at a nonzero angle and non-parallel with respect to a depth direction of the cylindrical space, the central axis of the cylindrical space intersecting the wall portion; wherein the drain space is arranged at an other axial end of the cylindrical space opposite the one axial end of the cylindrical space; the housing portion and the wall portion are integrally formed; one endmost portion of the housing portion, which is on an opposite side of the valve case relative to the wall portion, is surrounded and contacted by resin of the cylinder head cover; the resin of the cylinder head cover contacts the wall portion to thereby cover the wall portion; the valve case is formed at the cylinder head cover by insert molding; a thickness of the wall portion is thinner than a thickness of the housing portion; and an outline shape of the wall portion, in a plane which is perpendicular to the depth direction of the drain space, is formed in an arc shape.