| 摘要 |
<p>1529879 Electric motors HANNING- ELEKTRO-WERKE ROBERT HANNING 19 Dec 1975 [21 Dec 1974] 52031/75 Heading H2A An electric motor has an internal rotor 5 with stub axles 12 projecting into the ends 6, 7 of a winding 3 in slots 11 in a pile of stator laminations 2 having insulating strips 10a, 10b in the slots 11 with ends 6, 7 projecting beyond respective ends of the stator core 2, one winding end 6 being formed into a dome shape located on a protective support cage 8 which has an internal diameter decreasing in the direction away from the stator core 2 to a diameter substantially equal to that of the associated stub axle 12, the other winding end 7 being expanded to an internal diameter through which rotor 5 can pass during assembly of the motor and end 7 being surrounded by a protective cage 9, and a ring 13 of electrically insulating material being located between cage 9 and stator core 2 to support winding end 7. Winding end 6 may be stabilized by varnish. The cage 8 may be domeshaped and have lips 15 which press the coil sections into the slots 11. Cage 8 can be joined to inside ones 10b of the slot-insulating strips. The ring 13 has fingers 14 which fill in the space between strips 10a, 10b and brace projecting ends 17 of the strips 10a, 10b. The ring 13 may be in one or more pieces and may be united with the stator laminations or integral with the cage 9. The cage 9 may have auxiliary elements (16), Figs. 6, 7 (not shown), for securing parts of the winding 3 or connecting cables or for accommodating a thermal switch. The strips 10a, 10b, cages 8, 9 and ring 13 may be injection moulded from plastics material.</p> |
