Patent ID: 7971562

Claim:
A continuous variable valve lift device, comprising: a valve, which opens or closes a channel by reciprocation thereof; a control shaft configured to be controlled to move toward or away from a reciprocation central axis of the valve; a pivotable shoe pivotably coupled to the control shaft, the pivotable shoe including: a cam insertion part formed of a recess or through-hole shape; and a slide face slidably contacting an end portion of the valve, and reciprocating the valve when the pivotable shoe is pivoted; and a drive cam comprising a cam lobe, wherein the drive cam is disposed in the cam insertion part, contacts an inner wall of the cam insertion part, and pivots the pivotable shoe around the control shaft; wherein the slide face formed on an external circumference of the pivotable shoe includes a zero lift section, a low lift section, and a high lift section in series, the zero lift section not pivoting the pivotable shoe, and the low and high lift sections lifting the valve at different distances according to pivoting of the pivotable shoe and rotation of the drive cam.