Cored motor

Details Cored motor Cored motor

2006-09-12

2006-09-12

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06700R, C310S089000, C310S090000

Reexamination Certificate

active

07105970

ABSTRACT:
A cored motor includes a rotor (21), having a rotor hub (2), a shaft (1) fixed to the rotor hub (2), a rotor yoke (5) in ring shape and a ring magnet (6) fixed to an inner circumferential surface of the rotor yoke (5). A stator (3) has a motor base (13) and a stator core (14) and a sleeve (9) in cylindrical shape fixed to the motor base (13) respectively. A surface of the rotor hub (2) in the motor base side is provided with a recessed portion (23) having an annular shape and a raised portion (24) that protrudes continuously or intermittently in an annular shape. The rotor yoke (5) is fixed to the recessed portion (23) and the ring magnet (6) contacts the raised portion (24) and fixed to the rotor yoke (5). Respective center lines of the rotor yoke (5), the ring magnet (6) and the stator core (14) are aligned in a longitudinal direction along the shaft (1) and are made approximately coincidental with each other.

REFERENCES:
patent: 5142176 (1992-08-01), Takahashi
patent: 6580190 (2003-06-01), Takasu
patent: 2003/0020341 (2003-01-01), Nagatsuka
patent: 10-4642/1998 (1998-01-01), None

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