Commutator motor
AssigneeMatsushita Electric Works, Ltd.
InventorsTsutomu Natsuhara, Tomio Yamada
Life of this patent
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Abstract
A commutator motor having excellent performance of preventing coils from being burnt at overload can operate from either AC or DC power sources. This commutator comprises an iron core having plural slots, a rotation shaft inserted in a center of the iron core, and a pair of first and second commutators mounted on the rotation shaft at opposite ends of the iron core. A first coil wire is connected to the first commutator, and is wound on bottoms of the slots to form an inner coil. A second coil wire having a smaller diameter than the first coil wire is connected to the second commutator, and is wound on the inner coil in the slots to form an outer coil.
Claims4
A commutator motor comprising:
- an iron core having plural slots that are used for coil winding;
- a rotation shaft inserted in a center of said iron core
- a pair of first and second commutators mounted on said rotation shaft at opposite ends of said iron core;
- a first coil wire connected to the first commutator, and wound on bottoms of the slots of said iron core to form an inner coil;
- a second coil wire connected to the second commutator, and wound on said inner coil in the slots of said iron core to form an outer coil;
- a first terminal that can be connected to a first power source to supply electric power of said first power source to said first coil wire through said first commutator;
- and
- a second terminal that can be connected to a second power source to supply electric power of said second power source to said second coil wire through said second commutator;
- wherein a diameter of said second coil wire is smaller than that of said first coil wire.
Dependencies are inferred from the claim text.