| 摘要 |
PCT No. PCT/SE92/00171 Sec. 371 Date Oct. 1, 1993 Sec. 102(e) Date Oct. 1, 1993 PCT Filed Mar. 20, 1992 PCT Pub. No. WO92/17933 PCT Pub. Date Oct. 15, 1992.A rotor for short-circuited alternating current motors, having a pack of circular rotor blades fixedly mounted on a shaft, the plates have, uniformly around the peripheral edges thereof, a number of recesses which, when the plates are packed, form generally axially extending rotor slots, and each rotor slot includes a first recess or cavity whose peripheral edge forms a closed contour and which accommodates a conductor radially inwards of the mantle surface of the rotor, the peripheral edge of said first recess has a concavity which faces towards said peripheral edge, and a second recess which forms a radially extending slot which extends from a point close to the concavity and out towards said peripheral edge, a bridge is formed between the first recess and the second recess, and the second recess has a widened part which is located between the concavity of the first recess and the peripheral edge. |
