Patent ID: 9157338
Filing Date: 2015-10-13
Classification: F01L

Abstract:
1. A lash adjuster comprising: a pressure-receiving effector that moves back and forth in an operating direction of a valve, due to a pressure force; a relay effector that can relatively move with respect to the pressure-receiving effector while the relay effector and the pressure-receiving effector are in an inserted relationship with each other, and that abuts against the valve and moves back and forth in the operating direction; an intermediate spring that abuts against the pressure-receiving effector and the relay effector and biases the pressure-receiving effector and the relay effector in separate directions; and a sleeve member into which the pressure-receiving effector and the relay effector are slidably inserted, and that is provided with an oil supply passage for supplying a working fluid to the pressure-receiving effector and the relay effector, wherein a pressure receiving-side damper space whose volume decreases as the pressure-receiving effector is pressed in due to the pressure force and the distance between the pressure-receiving effector and the relay effector is shortened, and an orifice portion that suppresses an outflow of the working fluid from the pressure receiving-side damper space is formed between the pressure-receiving effector and the relay effector, and a restoring-side damper space whose volume decreases as the relay effector is pressed back by the valve is formed so as to span between the relay effector and the sleeve member.