Title:
DC motor
Document Type and Number:
Japanese Patent JP6009140
Kind Code:
B2
Abstract:
A DC motor comprises: a tubular metal case; a magnet that is provided along the inner surface of the metal case and has four or more of magnet poles in the circumferential direction; an armature that is arranged to face the magnet and composed of a core and a coil; and a shaft. The magnet is formed of a material with a maximum energy product BHmax of 3 to 6 MGOe. When the thickness of the magnet in the radial direction of the armature is indicated by T [mm] and the outer diameter of the core is indicated by d [mm], the ratio T/d of the thickness T of the magnet to the outer diameter d of the core is 0.16 or more.
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Inventors:
Miyajima Yusuke
Application Number:
JP2010209840A
Publication Date:
October 19, 2016
Filing Date:
September 17, 2010
Export Citation:
Assignee:
Mabuchi Motor Co., Ltd.
International Classes:
H02K23/04; H02K1/17
Domestic Patent References:
| JP2002247827A |
Attorney, Agent or Firm:
Sakaki Morishita
Yusuke Murata
Tomoyuki Miki
Yusuke Murata
Tomoyuki Miki
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