| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rotation transmission device capable of suppressing deterioration of grease and a sealing part.SOLUTION: A rotation transmission device includes a rotating shaft 51, rolling bearings 52 and 53 arranged on an outer periphery of the rotating shaft 51, a pulley part 54 supported by the rotating shaft 51 through the rolling bearings 52 and 53, a one-way clutch 60 for transmitting rotation in one direction of the pulley part 54 to the rotating shaft 51, sealing parts 71 and 73 arranged on both ends of the pulley part 54 in an axial direction and sealing between the rotating shaft 51 and the pulley part 54 in a radial direction, and grease sealed between the rotating shaft 51 and the pulley part 54 in the radial direction, and the rotating shaft 51 is attached to an attachment shaft 12 of an attachment target 10. A part of the rotating shaft 51 is protruded to the attachment target side with respect to the sealing part 73, a fan 31 is disposed on an outer periphery of the protruded rotating shaft 51, and the fan 31 is rotated together with the fan 31, and thus, a flow of air is generated.</p> |
