Claims
- 1. In a miniature motor comprising a motor case, a rotor rotatably mounted in said case including a rotatable shaft having a rotor with a commutator rotatable therewith, the improvement comprising a casing wall with a brush receiving recess, and a brush having a fork-shaped brush arm with a fork-shaped commutator engaging sliding part end disposed in bearing contact against said commutator and an opposite brush base end with a portion engaged in the brush receiving recess and held therein so as to hold said brush arm fork-shaped commutator engaging sliding part end in sliding engagement with said commutator, and a flexible photo-setting resin coating said brush at least over said brush base end.
- 2. In a miniature motor according to claim 1, wherein said flexible photo-setting resin is applied to one side of said fork-shaped brush arm excluding said fork-shaped commutator engaging sliding part end which makes electrical contact with said commutator.
- 3. In a miniature motor according to claim 1, including a damper on said brush base end, and said flexible photo-setting resin being applied to one side of said brush arm and exluding said fork-shaped commutator engaging sliding part end which makes electrical contact with said commutator, and including covering at least a portion of said damper.
- 4. In a miniature motor according to claim 1, wherein said photo-setting resin is applied to said brush base end of said brush in an area adjacent said recess in addition to covering an entire single side surface of said brush excluding the portion thereof in contact with said commutator.
- 5. In a miniature motor comprising a motor case, a rotor rotatably mounted in said case including a rotatable shaft having a rotor with a commutator rotatable therewith, the improvement comprising a casing wall with a brush receiving recess, a brush having a fork-shaped brush arm with a brush fork-shaped commutator engaging a sliding part end disposed in bearing contact against said commutator and an opposite brush base end with a portion engaged in the brush receiving recess and held therein so as to hold said brush arm fork-shaped commutator engaging sliding part end in sliding engagement with said commutator, and a flexible photo-setting resin coating said brush at least over said brush base end, said photo-setting resin is applied to an extended area of said brush adjacent the recess and inside of said excess in addition to an entire single side surface of said brush excluding the portion which is engagement with said commutator.
Parent Case Info
This application is a continuation-in-part of Ser. No. 755,069,filed July 15, 1985.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4758757 |
Okumura |
Jul 1988 |
|
Foreign Referenced Citations (3)
Number |
Date |
Country |
0108203 |
Aug 1979 |
JPX |
0117455 |
Sep 1980 |
JPX |
0050750 |
Mar 1984 |
JPX |
Non-Patent Literature Citations (1)
Entry |
McGraw-Hill Dictionary of Scientific and Technical Terms; Third Edition; Sybil P. Parker; McGraw-Hill Book Co.; New York; 1984; 4 pages. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
755069 |
Jul 1985 |
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