Rotor for a permanent-magnet motor

Details Rotor for a permanent-magnet motor Rotor for a permanent-magnet motor

1993-03-31

1995-03-28

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 310 51, 310 91, 310261, H02K 2112

Patent

active

054020247

ABSTRACT:
With a view to reduce vibrations generated by a motor and improve resistance to heat, reliability and vibration isolation properties without increasing the cost or the number of manufacturing steps in a rotor for a permanent-magnet motor, a rotor core is formed of an outer peripheral portion by which the permanent magnet is fixed, and a central portion by which a shaft is fixed, a clearance is provided between the outer peripheral portion and the central portion, and the outer peripheral portion is connected to the central portion by means of a plurality of fastening members. Thus, a rotor having excellent vibration isolation properties can be obtained. Since the rotor core is formed of laminated iron plates on which the outer peripheral portion, the central portion and the fastening members are all formed as one piece, resistance to heat, reliability and the vibration isolation properties can be enhanced without increasing the cost or the number of manufacturing steps.

REFERENCES:
patent: 1993825 (1935-03-01), Bohli
patent: 4472650 (1984-09-01), Advolotkin
patent: 4477744 (1984-10-01), Gerber
patent: 4563622 (1986-01-01), Deavers
patent: 4642502 (1987-02-01), Carpenter
patent: 4841186 (1989-06-01), Feigel
patent: 5045740 (1991-09-01), Hishinuma
Patent Abstracts of Japan, vol. 10, No. 272 (E-437)(2328) 16 Sep. 1986, and JP-A-61 094 548 (FANUC Ltd.) 13 May 1986.
Patent Abstracts of Japan, vol. 8, No. 74 (E-236)(1511) 6 Apr. 1984 and JP-A-58 222 766 (Tokyo Shibaura Denki K.K.) 24 Dec. 1983.
H. Girese, "SIMODRIVE: Trendsetting Drive Systems for Machine Tools and Robots", (1986), pp. 147-149, Siemens Power Engineering & Automation VIII (1986) No. 3.

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