Brushless DC motor

Details Brushless DC motor Brushless DC motor

2006-03-28

2006-03-28

Schuberg, Darren (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

07019426

ABSTRACT:
A bridge (8) in conformity with a tooth opening angle of the stator (1) is provided between a permanent magnet (5) and a permanent magnet (5) in a rotor (4), so that a magnetic flux for a reluctance torque is made to pass an inner side of the permanent magnet (5). An opening angle of each of ribs (7) on both sides of the permanent magnet (5) is set to be equal to or smaller than the teeth interval opening angle and equal to or larger than a half thereof. Thereby, reluctance of the rib (7) against a magnetic flux in a circumferential direction is increased and leakage of the magnetic flux of the permanent magnet (5) is prevented.

REFERENCES:
patent: 5097166 (1992-03-01), Mikulic
patent: 5990592 (1999-11-01), Miura et al.
patent: 6025667 (2000-02-01), Narita et al.
patent: 6177745 (2001-01-01), Narita et al.
patent: 6218753 (2001-04-01), Asano et al.
patent: 6340857 (2002-01-01), Nishiyama et al.
patent: 6703744 (2004-03-01), Yoshinaga et al.
patent: 6858961 (2005-02-01), Tagome et al.
patent: 6867526 (2005-03-01), Mori et al.

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