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Generators or Motors

Miniature-motor

Asynchronous machine

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Torque and torsion angle measuring apparatus

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Torque sensor

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Torque sensor

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Torque sensor

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Integral motor and control

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Inner stator of drum type motor

In the winding engineering in the prior art motor, if the winding is arranged linearly, more space ...

Alternator

Accordingly, the present invention has been made with a view toward solving the problems described ...

Miniature motor

Details

Inventors: Okada, Kazuo;
Assignee: Mabuchi Motor Co., Ltd. (Matsudo, JP)
Primary Examiner: La Balle; Clayton E.
Assistant Examiner:
Attorney, Agent or Firm: McGlew and Tuttle

A miniature motor comprising a case made of a metallic material, formed into a bottom hollow tubular shape and having a permanent magnet fixedly fitted to the inner circumferential surface thereof, a rotor consisting of an armature facing the permanent magnet and a commutator, and a case cover engaged with an open end of the case and comprising brushes making sliding contact with the commutator and input terminals electrically connected to the brushes; the rotor being rotatably supported by bearings provided on the bottom of the case and the case cover, and a printed circuit board having a control element and a soundproofing plate made of a soundproofing material being provided outside the case cover, in which the soundproofing plate is formed into a cross shape when projected on a plane orthogonally intersecting the axial line of the rotor.

DETAILED DESCRIPTION This invention is intended to overcome the problems inherent in the prior art.
It is an object of this invention to provide a miniature motor having a soundproofing plate that can be manufactured at high yield and involves easy assembly work.

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