| 摘要 |
PCT No. PCT/EP95/03406 Sec. 371 Date Sep. 30, 1997 Sec. 102(e) Date Sep. 30, 1997 PCT Filed Aug. 30, 1995 PCT Pub. No. WO96/07230 PCT Pub. Date Mar. 7, 1996An electric motor has brushes preassembled in casings on a brush holder plate. To keep the brushes in the casings as long as a collector of the motor has not yet been fitted, a retaining ring in front of the brushes is installed, this retaining ring being gradually replaced by the collector when the latter is fitted. The retaining ring is introduced into a specially provided space of an accommodating chamber in a bearing support, provided with a slot and thus resilient in a radial direction. Therefore, the ring may abut with preload on the outside walls of the accommodating chamber. Frictional engagement between the ring and the walls of the accommodating chamber is established, preventing rattling noise or wear as a result of movement of the retaining ring.
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