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US 6,608,410 B2Granted
Motor having shaft-grounding arrangement
AssigneeAsmo Co., Ltd.
InventorsToshihiro Sato, Shuuichi Gonda
Life of this patent
Estimating the term…
Abstract
A DC motor has a conductive case and an arrangement for electrically connecting the shaft and case of the DC motor that is grounded. The arrangement includes a conductive member and a pressing member that presses the conductive member against the shaft, thereby grounding the shaft.
Claims9
A motor comprising:
- a rotor;
- an armature coil;
- a conductive case for accommodating said rotor;
- a grounding member for grounding said conductive case;
- a shaft having a portion extending outward from conductive case;
- a bearing fixed to said case for rotatably supporting said shaft;
- a housing for fixing said conductive case;
- means, including a conductive member in contact with said shaft and said conductive case, for pressing said conductive member between said shaft and said conductive case, wherein said means comprises:
- a resilient contact member integrated with said conductive case;
- and
- a parallel pardon extending in a parallel direction to said shaft;
- a slant portion slanting toward a center of said shaft;
- and
- a disk portion held between said conductive case and said housing, wherein said disk portion comprises a plurality of slanted spring members.
11 more elements
A motor comprising:
- a rotor;
- an armature coil;
- a conductive case for accommodating said rotor;
- a grounding member for grounding said conductive case;
- a shaft having a collar and a portion extending outward from said conductive case;
- a bearing directly fixed to said case for rotatably supporting said shaft;
- a housing for fixing said conductive case;
- means, including a conductive member in contact with said shaft and said conductive case, for pressing said conductive member between said shaft and said conductive case, wherein said means comprises a spring washer held between said bearing and said collar.
5 more elements
A motor comprising:
- a rotor;
- an armature coil;
- a conductive case for accommodating said rotor;
- a grounding member for grounding said conductive case;
- a shaft having a portion extending outward from said conductive case;
- a bearing fixed to said case for rotatably supporting said shaft;
- a housing for fixing said conductive case;
- and
- means, including a conductive member in contact with said shaft and said conductive case, for pressing said conductive member between said shaft and said conductive case, wherein said means comprises a conductive seal member disposed between said shaft and said conductive case.
6 more elements
A motor comprising;
- a rotor;
- an armature coil;
- a conductive case for accommodating said rotor;
- a grounding member for grounding said conductive case;
- a shaft having a portion extending outward from said conductive case;
- a bearing fixed to said case for rotatably supporting said shaft;
- means, including a conductive member in contact with said shaft and said conductive case, for pressing said conductive member between said shaft and said conductive case, wherein said means comprises:
- a parallel portion extending in a parallel direction to said shaft;
- a slant portion slanting toward a center of said shaft;
- and
- a disk portion held between said conductive case and said housing, wherein said disk portion comprises a plurality of slanted spring members.
8 more elements
A motor comprising:
- a rotor;
- an armature coil;
- a conductive case for accommodating said rotor;
- a grounding member for grounding said conductive case;
- a shaft having a portion extending outward from said conductive case;
- a bearing fixed to said case for rotatably supporting said shaft;
- and
- means, including a conductive member in contact with said shaft and said conductive case, for pressing said conductive member between said shaft and said conductive case, wherein said means comprises a plurality of members surrounding said shaft at equal intervals.
5 more elements
Dependencies are inferred from the claim text.