Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1986-01-23
1987-11-10
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 42, 310 89, 310154, 310242, 310248, H02K 1100
Patent
active
047059729
ABSTRACT:
A solderless electrical connection between a wire and an electrical contact forming part of a permanent magnet motor. The motor includes a generally U-shaped motor frame that defines an open volume within which is mounted a plastic spacer or insert and a pair of opposed permanent magnets and that surround a rotating armature. One end of the armature terminates in a shaft which is received within a bushing that is mounted at the center of the planar central portion. The other end of the armature terminates in a shaft. Next to the armature and mounted on the shaft is a commutator. The shaft passes through a metallic bushing that is defined as part of a non-conductive insert which mates with the motor frame. Also mounted on the non-conductive member are a pair of brush assemblies. Each brush assembly basically consists of a pair of planar, opposed parallel legs that are joined together by a planar portion. Near the center of the planar portion is a circular opening that is made up of a number of symmetrically arranged, resilient fingers. One of the legs contains an extension in the form of a brush leaf within which is mounted a carbon brush that interacts with the commutator. In use, a wire having a greater diameter than the diameter defined between the fingers is pushed into the opening causing the fingers to yield allowing the wire to penetrate. Because of their resiliency, the fingers prevent withdrawal of the wire after it has been inserted into the opening. In this way a solderless connection is formed between the brush assembly and a wire that is connected to a source of voltage for operating the motor.
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patent: 4237394 (1980-12-01), Aoki
patent: 4513214 (1985-04-01), Dieringer
patent: 4574215 (1986-03-01), Mabuchi
Johnson Electric Industrial Manufactory Limited
Skudy R.
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