ELECTRIC MOTOR - MITSUBA CORP

Title:

ELECTRIC MOTOR

Document Type and Number:

WIPO Patent Application WO/2015/137230

Kind Code:

A1

Abstract:

In a 4-polar, 6-slot, 18-segment electric motor, one forward winding coil (91) and two reverse winding coils (92, 93) are wound around each tooth (12). When the forward winding coils are defined as U-phase, V-phase, and W-phase coils and the reverse winding coils are defined as -U-phase, -V-phase, and -W-phase coils, the U-phase, -W-phase, -W-phase, V-phase, -U-phase, -U-phase, W-phase, -V-phase, and -V-phase coils are electrically connected in this order to adjacent segments. When the number of turns of the U-phase, V-phase, and W-phase coils (91) is denoted by T1, the number of turns of the -U-phase, -V-phase, and -W-phase coils (92), which first make sliding contact with a brush, is denoted by T2, and the number of turns of the -U-phase, -V-phase, and -W-phase coils (93), which later make sliding contact with the brush, is denoted by T3, a relationship of T2 > T1 > T3 is satisfied.

Inventors:

TAMURA NATSUMI (JP)
TANAKA HIROTO (JP)
TOKIZAKI TEPPEI (JP)
TAMURA SATOSHI (JP)

Application Number:

PCT/JP2015/056494

Publication Date:

September 17, 2015

Filing Date:

March 05, 2015

Export Citation:

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Assignee:

MITSUBA CORP (JP)

International Classes:

H02K23/38; H02K3/18; H02K3/28; H02K23/66

Domestic Patent References:

WO2013015409A1

2013-01-31

Foreign References:

JP2013038985A	2013-02-21
JP2007189870A	2007-07-26

Other References: