| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a transmission module provided with a cooling device, capable of decreasing a temperature of a nut and not requiring a design of a nut base to be altered without changing a length and diameter of the nut. <P>SOLUTION: The transmission module provided with a screw shaft 20 having a rolling groove 21 on its periphery; a nut 30 including, a body 31, a through hole 33 penetrating through the body and in which the screw shaft is inserted, a rolling groove 331 provided on a wall face of the through hole and forming a load route together with the rolling groove, a flat face 311 formed on the outer face of the body, and two through holes 312 provided on the flat face and communicating with the rolling groove; a circulating piece 40 including legs 41 corresponding to and inserted in two through holes and a circulation route 42 penetrating through the two legs; a plurality of rolling pieces 50 provided on the load route and circulation route ; and the cooling device 60 provided on the body of the nut and having a joint face 61 provided on the periphery and coming in contact with the flat face of the nut, a cooling and circulation route 62 provided inside thereof, a regulating groove 63 provided on the joint face, and a groove bottom face 631 provided in the regulating groove and coming in contact with the circulating piece. <P>COPYRIGHT: (C)2013,JPO&INPIT |
