Vibration generator and electronic apparatus

Details Vibration generator and electronic apparatus Vibration generator and electronic apparatus

2007-01-09

2007-01-09

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

10522337

ABSTRACT:
There is provided a vibration generator (40) in which a rotor with an unbalancer is rotated. The vibration generator includes a bottom plate (47) having a flat coil substrate (120) installed thereto, a stationary shaft (91) provided perpendicularly to the bottom plate, a magnet (85) installed on the stationary shaft (91) with a freely rotatable bearing being disposed between them and opposite to the surface of the flat coil substrate (120) with a slight clearance defined between them, and a weight (87) installed to the magnet (85). For generating a vibration, a current is supplied to the coil on the flat coil substrate (120) to rotate the magnet (85) and weight (87). The bottom plate (47) is formed from a nonmagnetic material. A thin magnetic plate (48) is installed at the side opposite to the magnet (85) with the bottom plate (47) being placed between the thin magnetic plate (48) and magnet (85).

REFERENCES:
patent: 4980590 (1990-12-01), Taniguchi et al.
patent: 5801466 (1998-09-01), Odagiri et al.
patent: 5898248 (1999-04-01), Ikeda et al.
patent: 2004/0256930 (2004-12-01), Kim
patent: 11-218713 (1999-08-01), None
patent: 2001-231197 (2001-08-01), None
patent: 2001-232290 (2001-08-01), None

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