Plug in commutator, a plug in segment for making a plug in commu

Details Plug in commutator, a plug in segment for making a plug in commu Plug in commutator, a plug in segment for making a plug in commu

1997-12-06

1999-07-06

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310235, H02K 1300, H02R 3904

Patent

active

059201410

ABSTRACT:
A plug in commutator has a hub body (1) of nominally cylindrical cross section. Ribs (4) are formed on the circumferential periphery of the hub body (1) each rib extends longitudinally and is equiangularly spaced to define grooves (5). The ribs are of cylindrical section and so form substantially hour glass sectioned grooves (4). Each groove (4) accommodates a portion of a conductive segment (2) which has opposing radially extending surfaces oversized and shaped corresponding to the shape of the adjacent groove surfaces. At least a part (11) of the oversized portion is of swallow tailed shape to be resiliently deformable and is sized to leave a small gap 5' between the bottom of the groove and the bottom of the segment (2). The commutator is assembled by slotting a preformed segment (2) one into each groove (5). The resiliently deformable part acts to prevent displacement of the segment (2) and to relieve stresses imposed on the hub body (1).

REFERENCES:
patent: 3496398 (1970-02-01), Calver
Hassebe, "Manufacture of Commutator for Rotary Electric Machine," Japanese Abstract 63-249446, Oct. 1988.
Ogiso, "Commutator", Japanese Abstract 2-285949, Nov. 1990.
Tanaka et al., "Commutator and Rotary Converter with It", Japanese Abstract 7-163091, Jun. 1995.

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