| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cam shaft device capable of leading oil to an oil passage at a cam shaft side while suppressing the reduction of the oil pressure of the oil fed from a hydraulic feeding source. <P>SOLUTION: The oil is fed to an assembling part 31 assembled to the cam shaft 20 through a cam journal 10 for rotatably supporting the cam shaft 20. Double-row rolling bearings 40 for the cam shaft 20 are arranged on the cam journal 10. Between the double-row rolling bearings 40, a passage constitution member 60 for constituting a communication passage 65 for making the oil fed from the hydraulic feeding source communicate with the oil passage 25 at the cam shaft 20 side is arranged. Between the rolling bearing 40 and the passage constitution member 60, a fine clearance forming a labyrinth structure is set, and a part of the oil flowing toward the communication passage 65 is fed into the rolling bearing 40 through the fine clearance. <P>COPYRIGHT: (C)2011,JPO&INPIT |
