| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a motor capable of suppressing an excessive load applied from radial bearings, without using a coupling, even if a rotation shaft formed with a spiral groove for a ball screw is supported by the two radial bearings.SOLUTION: A motor 1 has a fixed body 2 including a rotor 40 equipped with a rotation shaft 41, and a stator 30. The fixed body 2 holds an outside radial bearing 15 held at an output side end portion of the fixed body 2, and an opposite output side radial bearing 14. At a part on an output side L1 of the rotation shaft 41, a spiral groove 43 for a ball screw is formed. In the fixed body 2, a bearing holder 50 for holding the output side radial bearing 15 has a bearing holding portion 51, a flange portion 52, and a coupling portion 53 for coupling the flange portion 52 and the bearing holding portion 51. The coupling portion 53 is equipped with an elastically deforming portion 54 capable of elastically deforming by following the inclination of the rotation shaft 41.</p> |
