Commutator for a motor and method of manufacturing the same

Details Commutator for a motor and method of manufacturing the same Commutator for a motor and method of manufacturing the same

1991-11-27

1993-04-20

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310235, 310236, H02K 1300

Patent

active

052045749

ABSTRACT:
Four side walls surrounding a recess in the center of a commutator segment are extended to overhang toward the recess comprising claws and cut-and-raised protrusions, thereby ensuring that the commutator segment is securely engaged with the resin filled in the recess against any of the triaxial stresses due to centrifugal force, rotating force, and tensile force. The volume of cutting in the insulating resin at undercut portions is reduced. The internal and cut-and-raised protrusions are molded by cylindrically bending oriented progressive dies made of plate material.

REFERENCES:
patent: 2945971 (1960-07-01), Apostoleris
patent: 3140414 (1964-07-01), Skj dt et al.
patent: 3492519 (1970-01-01), Kirkwood
patent: 4872255 (1989-10-01), Kogej
patent: 4920633 (1990-05-01), Wojcik

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