Commutator with improved connection between carbon and metal segments
AssigneesMitsuba Electric Mfg. Co., Ltd., Kunimitsu Carbon Industry Co., Ltd.
InventorsShuji Shimoyama, Iwao Yanagizawa
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Abstract
A flat commutator includes a circular arrangement of sectorial carbon segments made of conductive carbon providing commutating surface of the commutator, metallic segments attached to respective of the carbon segments, and a hub body of synthetic resin. The metallic segments have fixing members encroaching into inner and outer peripheral surfaces of the carbon segments, thereby fixing the carbon segments to the metallic segments. The hub body encloses at least fixed portions of the inner and outer peripheral surfaces of the carbon segments that engage with the fixing members of the metallic segments.
Claims8
A flat commutator comprising:
- a plurality of carbon segments formed of conductive carbon material, said carbon segments being arranged in a circular arrangement and defining a commutating surface of said commutator, and each said carbon segment having a sectorial configuration including an inner peripheral surface and an outer peripheral surface;
- a plurality of metallic segments, each said metallic segment having fixing members encroaching into fixed portions of said inner and outer peripheral surfaces of a respective said carbon segment and thereby fixing said each metallic segment to said respective carbon segment;
- and
- a hub body formed of synthetic resin and enclosing at least said fixed portions of said inner and outer peripheral surfaces of all said carbon segments.
Dependencies are inferred from the claim text.