| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor capable of surely maintaining airtightness between a housing and a lid body with no use of a conventional O-ring. <P>SOLUTION: The motor includes a cylindrical housing 1 having a bottom, a lid body 5 for closing an opening part of the housing, a stator 3 built in the housing, and a rotor 4 rotatably provided in a gap in the stator. The lid body is formed of a synthetic resin whose laser permeability is lower than that of the housing. Flanges 15 and 17 are integrally formed with openings of the housing and the outer peripheral part of the lid body abutting with each other. An annular protruding part 18 is formed at an abutting surface 17a of the flange of the lid body. An annular groove 19 in which the protruding part is inserted is formed at an abutting surface 16a of the flange of the housing. The housing and the lid body are integrally jointed by emitting laser beams 20 from both sides of the flange which is opposite to the lid body for melting the surface of the protruding part. <P>COPYRIGHT: (C)2010,JPO&INPIT |
