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AssigneesRicoh Company, Ltd., Tohoku Richo Co., Ltd.
InventorsMitsuo Suzuki, Yukio Itami, Yoshio Hashimoto, Mutsumi Yamamoto, Yoshihiro Takahashi
Estimating the term…
In a brushless motor, the number of coreless armature coils is set to 3n when the number of magnetic poles of a magnet for a magnetic field is set to 2n where n is a positive integer. An opening angle of each of the armature coils is set to 360/3n degrees. A notch portion is formed in an outer circumferential portion of the magnet for a magnetic field. A recessed portion is formed by this notch portion and an inner circumferential portion of a yoke. The recessed portion constitutes a groove for correcting a balance of each of the magnet for a magnetic field and a rotating body when this magnet and the rotating body are rotated. A motor housing and a harness are electrically connected to a printed board. The housing is connected to the ground through this harness and a harness for power. In this brushless motor, a magnetizing frequency is reduced and driving efficiency of a control circuit can improved when the brushless motor is rotated at a high speed. Further, it is possible to prevent an iron or copper loss from being caused so that an increase in temperature of the brushless motor can be restrained.
A brushless motor, comprising:
A brushless motor comprising:
A brushless motor comprising:
A brushless face-opposed type motor, comprising:
A brushless motor, comprising:
Dependencies are inferred from the claim text.