The housing which revolution

摘要

PROBLEM TO BE SOLVED: To provide a brushless motor capable of reducing the cost of a driving circuit more than conventional motors. ;SOLUTION: A mounting protrusion part 6 of a housing 4 and a mounting hole 20a in a circuit protective case 20 are met each other, and the circuit protective case 20 and the housing 4 are disposed. A first vibration-proof rubber 50 is disposed between the mounting surface 6a of the mounting protrusion part 6 and the peripheral part of the mounting hole of the circuit protective case 20. A second vibration-proof rubber 60 is disposed between the radiating surface 6b of the mounting protrusion part 6 and the mounting member 40 fixed at the circuit protective case 20. Both of the first and second vibration- proof rubbers 50, 60 and the mounting protrusion part 6 are pressed against the peripheral part of the mounting hole by the mounting part 40 to mount the circuit protective case 20 on the mounting protrusion part 6 through both of vibration-proof rubbers 50, 60. A venting air-gap communicating with the atmosphere outside the circuit protective case 20 is formed between at least one of both vibration-proof rubbers 50, 60 and the mounting protrusion part 6.;COPYRIGHT: (C)2000,JPO