Patent ID: 8201533
Filing Date: 2012-06-19
Classification: F01L

Abstract:
1. A lash adjuster comprising: a body in a cylindrical shape; a plunger inserted into the body and defining a pressure chamber in the body when assembled to the body, the plunger being moved in an axial direction in the body when a working fluid flows into or out of the pressure chamber so that a volume of the pressure chamber is increased or reduced, the plunger having a bottom wall defining the pressure chamber, a peripheral wall rising from an outer periphery of the bottom wall and an outer peripheral surface formed with an annular groove located at a height position confined in a range of a thickness of the bottom wall out of an outer peripheral surface of the peripheral wall; and a spacer formed into a shape of an annular plate with elasticity and fittable into the annular groove of the plunger, wherein when the spacer is fitted in the annular groove, the spacer has a plate width that is equal to a separating distance between a groove bottom of the annular groove and an inner peripheral face of the body thereby to fill a gap between an inner peripheral face of the body and an outer peripheral face of the plunger, and the spacer has a flow path through which a working fluid introduced into the pressure chamber leaks.