Patent ID: 9453438
Filing Date: 2016-09-27
CPC Classification: F01L

Claim Text:
1. A valve timing adjusting device adapted to be provided on a drive force transmission route from a driving shaft to a driven shaft of an engine, the valve timing adjusting device adjusting valve timing of a valve which is opened or closed by the driven shaft, and comprising: a housing that is rotatable integrally with a first shaft which is one of the driving shaft and the driven shaft; a vane rotor that is rotatable integrally with a second shaft which is the other one of the driving shaft and the driven shaft and that defines an advance chamber and a retard chamber between the vane rotor and the housing, the vane rotor including second supply oil passage connectable to a first supply oil passage of the second shaft; a direction switching valve that is provided at a central part of the vane rotor, wherein the direction switching valve connects together the second supply oil passage and the advance chamber at time of rotation of the vane rotor toward an advance side relative to the housing, and connects together the second supply oil passage and the retard chamber at time of rotation of the vane rotor toward a retard side relative to the housing; a check valve that is provided between the vane rotor and the second shaft and that permits a flow in a direction from the first supply oil passage toward the second supply oil passage and prevents a flow in a direction from the second supply oil passage toward the first supply oil passage; a fixing unit that is provided between the check valve and the second shaft and fixes the check valve between the fixing unit and the vane rotor, the fixing unit including a third supply oil passage which connects together the first supply oil passage and the second supply oil passage; and a filter that is provided for the fixing unit and is configured to capture foreign substances flowing through the third supply oil passage; wherein the check valve is in contact with the vane rotor.