Patent ID: 6637388
Filing Date: 2003-10-28
Classification: F01L,Y10T

Abstract:
A valve timing adjusting device, comprising:a first rotation member which has a plurality of shoes and is arranged so as to be rotatable around a cam shaft; a second rotation member which has a plurality of vanes, is arranged in an internal hole of the first rotation member, is arranged to allow rotational motion relative to the first rotation member within a prescribed angle range and is fixed to the cam shaft; a timing-retarded hydraulic oil chamber and a timing-advance hydraulic oil chamber which are respectively arranged between each vane of the second rotation member and the corresponding shoe of the first rotation member; and a lock mechanism for preventing the rotational motion of the second rotation member relative to the first rotation member, the lock mechanism being operable along a radial direction of the first rotation member, the lock mechanism comprising: a supporting hole provided in a radial direction of the first rotation member, the supporting hole being formed on an outward side of the inner circumferential surface of the first rotation member; a plunger that is adapted to be slidably inserted into the supporting hole; a receiving hole provided in a radial direction of the second rotation member, the receiving hole being formed on an inward side of the outer circumferential surface of the second rotation member and being adapted to align with the supporting hole; a holder positioned in the supporting hole of the first rotation member and located on the outer side of an outer circumferential surface of the first rotation member; an elastic member provided between the plunger and the holder; a penetrating hole provided in an axial direction of the first rotation member to connect the supporting hole with an external surface of the first rotation member; and a knock pin located in the penetrating hole and adapted to contact the holder.