Patent ID: 8387480
Filing Date: 2013-03-05
Classification: F16H,Y10T

Abstract:
1. A scissors gear comprising: a main gear and a sub-gear co-axially combined by a scissors spring therebetween to integrally rotate; a first oil supply hole formed in the main gear or the sub-gear to supply oil from the outside; an oil groove formed in the sub-gear or the main gear to receive the oil by being selectively communicated with the first oil supply hole; and a check valve that is disposed in the main gear or the sub-gear to open/close the oil groove; wherein the check valve is disposed to be biased against the oil groove by an elastic member; wherein the check valve has an upward slope portion that opens the oil groove while the check valve is pushed upward by a first oil pressure supplied from the first oil supply hole, the first oil pressure occurring by a movement of the sub-gear so as for the first oil supply hole to be communicated with the oil groove; and wherein the check valve has a downward slope portion that closes the oil groove while the check valve is pressed downward by a second oil pressure in the oil groove, the second oil pressure occurring by a movement of the sub-gear so as for the first oil supply hole to not be communicated with the oil groove.