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US 12,658,772 B2Granted
Contact structure and brush motor
AssigneeMabuchi Motor Co., Ltd.
InventorYasuhiro Hashimoto
Life of this patent
Estimating the term…
Abstract
Regarding a contact structure and a brush motor, wear resistance of a commutator and a brush and an insulating property of a slit is improved. The disclosed contact structure includes a commutator formed of phosphor bronze and containing at least tin ranging from 1.0% or more to 9.0% or less by mass; and a brush formed of copper carbon and provided to come into contact with the commutator.
Claims6
A contact structure comprising:
- a commutator formed of phosphor bronze and containing at least tin ranging from 1.0% or more to 9.0% or less by mass;
- and
- a brush formed of copper carbon and provided to come into contact with sliding surface the commutator, the sliding surface being made of phosphor bronze and containing at least tin ranging from 1.0% or more to 9.0% or less by mass.
Dependencies are inferred from the claim text.