| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor capable of reducing variation of the return time of a lead screw by an energizing member by easily adjusting concentricity with a rotor and a support member for supporting the rotor. <P>SOLUTION: A motor 1 comprises a stator 3, a rotor 2, and a lead screw 4 threadedly engaged with the inner peripheral surface of the rotor 2 which are disposed in a casing 5, and a guide member 6 which is disposed in an opening part 5a. As to the rotor 2, support members 7 are disposed at both end parts 2a and 2b respectively in the axial direction of the rotor, one of the support members 7 is a bearing 8 for supporting one end part 2a side, and the other of the support member 7 is supported by a conical first recessed part 12 provided on a line coaxial with the axial line of the rotor 2 at the other end part 2b, a ball 9 abutting on the inner peripheral surface of the first recessed part 12, and a pressing member 10 the inner peripheral surface of which abuts on the ball 9, in which a conical second recessed part 13 disposed so as to face to face the first recessed part 12 on the same axial line thereof is formed, and which is energized to the other end 2b side of the rotor 2 by an energizing member 11. <P>COPYRIGHT: (C)2013,JPO&INPIT |
