Patent ID: 8127726

Claim:
A variable valve lift apparatus comprising: a camshaft comprising a first cam lobe and a second cam lobe; a cam follower comprising a first follower contacting the first cam lobe and a second follower contacting the second cam lobe; a connection rotatably connecting the first follower to the second follower; a main body supporting the first follower and the second follower; a connector selectively connecting the first follower and the second follower to the main body; a lost motion elastic member provided on the main body for supplying restoring force to the first follower and the second follower; and a valve configured to be opened and closed by the cam follower; wherein the connector comprises a plurality of locker pins; a hydraulic pressure supplying apparatus that selectively supplies hydraulic pressure to the plurality of locker pins for the first follower or the second follower to be connected to the main body; wherein the plurality of locker pins comprise a first locker pin, a second locker pin, and a return pin that supplies a restoring force to the first locker pin; a supporting pin provided on the main body; a supporting pin hole in the return pin for preventing interference with the supporting pin; and a return spring disposed between the supporting pin and the return pin for supplying restoring force to the return pin.