Variable valve lift device of internal combustion engine

A variable valve lift device of an internal combustion engine, comprising:

• a rocker arm (31) linked and connected to an engine valve (20) having a cam abutment part (50) abutting to a valve operating cam (29);
• a first link arm (58) with one end portion rotatably connected to the rocker arm (31) and the other end portion rotatably supported at a fixed position of an engine body (11) via a fixed support shaft (57);
• a second link arm (59) with one end portion rotatably connected to the rocker arm (31);
• a movable support shaft (60) which rotatably supports the other end portion of the second link arm (59);
• a crank member (61) connected to the movable support shaft (60) allowing the movable support shaft (60) to perform angular displacement around an axis parallel with its axis and rotatably supported at the engine body (11);
• and drive means (62) connected to the crank member (61) to make the movable support shaft (60) perform angular displacement, wherein the crank member (61) is formed in a crank shape, having crank webs (61a) sandwiching the second link arm (59) from opposite sides, and a connecting part (61c) integrally joining both the crank webs (61a) at a position where interference with the second link arm (59) is avoided, and the movable support shaft (60) is connected to the crank member (61) to connect both the crank webs (61a).