Patent ID: 8677964

Claim:
A variable valve lift apparatus comprising: a cam; a swing arm having one end operably connected to a valve, wherein the swing arm contacts the cam; a support portion selectively supporting another end of the swing arm; a hydraulic lash adjuster of which an oil supply hole and an oil exhaust hole thereto, and selectively supporting the swing arm according to oil supplying thereto or oil exhausting therefrom; a check valve selectively opening the oil exhaust hole; and a control portion controlling the check valve for the check valve to selectively open the oil exhaust hole, wherein the hydraulic lash adjuster further comprises: a housing; a plunger which is disposed to the housing for supporting the swing arm; and a spring which is disposed within the housing for elastically supporting the plunger; and wherein the check valve comprises: a check valve head which is disposed within the housing for selectively blocking the oil exhaust hole; and a check valve body which is connected to the check valve head and protruded through the oil exhaust hole.