Motor unit having drive motor and controller

Details Motor unit having drive motor and controller Motor unit having drive motor and controller

1996-11-19

1999-03-23

Ramirez, Nestor

Electrical generator or motor structure

Dynamoelectric

Rotary

310 89, 310 68R, 112258, 112259, 112260, 318 17, H02K 1100, H02K 500, D05B 6918, D05B 6912

Patent

active

058864393

ABSTRACT:
A motor unit having a drive motor, a control portion, and a base made of an aluminum die-casting product. The motor unit is fixed to a fixing stand of a sewing machine for driving a drive shaft thereof. The base has a pair of supporting brackets connected to the fixing stand for suspendingly fixing the base to the fixing stand. The base has a plate-like portion. The drive motor is fixed to one surface of the plate-like portion, and the control portion is fixed to an opposite surface thereof. A motor cover made of a synthetic resin is mounted on the one surface for covering the drive motor, and a protection cover made of a synthetic resin is mounted on the opposite surface for covering the control portion. The control portion includes a plurality of electronic components including heat generating elements. The heat generating elements are directly mounted on the base to release heat from the base.

REFERENCES:
patent: Re26836 (1970-03-01), Myers
patent: 3783809 (1974-01-01), Marforio
patent: 3789783 (1974-02-01), Cook et al.
patent: 4033531 (1977-07-01), Levine
patent: 4691651 (1987-09-01), Junemann
patent: 4988905 (1991-01-01), Tolmie, Jr.
patent: 5245237 (1993-09-01), Fisher et al.
patent: 5271346 (1993-12-01), Mori
patent: 5315194 (1994-05-01), Brusasco et al.
patent: 5341074 (1994-08-01), Zorzolo
patent: 5532534 (1996-07-01), Baker et al.

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