| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a vibrating motor that can stably exhibit high rotating performance for a long time.SOLUTION: A vibrating motor 1 includes; a shaft 3; a motor part M for rotating the shaft 3; a sintered bearing 4 having a bearing surface 4a on the inner periphery and rotatably supporting the shaft 3; a weight W installed in the shaft 3; and a cylindrical housing 2 in which the sintered bearing 4 is fixed to the inner periphery in a press-fitting manner. Eccentric rotation of the shaft 3 around the bearing affected by the weight W causes vibration. The sintered bearing 4 comprises a sintered body mainly composed of iron and containing 10-30 mass% of copper and has 300 MPa or more of a radial crushing strength constant.</p> |
