Invention Grant
- Patent Title: Massage machine
- Patent Title (中): 按摩机
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Application No.: US11577158Application Date: 2005-10-13
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Publication No.: US08092407B2Publication Date: 2012-01-10
- Inventor: Daisuke Tsukada , Motoharu Muto , Satoshi Kajiyama , Hiroki Inoue , Masayuki Suzuki
- Applicant: Daisuke Tsukada , Motoharu Muto , Satoshi Kajiyama , Hiroki Inoue , Masayuki Suzuki
- Applicant Address: JP Osaka
- Assignee: Panasonic Electric Works Co., Ltd.
- Current Assignee: Panasonic Electric Works Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Greenblum & Bernstein P.L.C.
- Priority: JP2004-299826 20041014
- International Application: PCT/JP2005/018833 WO 20051013
- International Announcement: WO2006/041112 WO 20060420
- Main IPC: A61H15/00
- IPC: A61H15/00

Abstract:
A massage machine using a small size and high torque brushless DC motor includes a driving unit moved up and down along guide rails of a chair and a first motor for moving the driving unit up and down. A pair of treatment head bases are driven reciprocally in opposite directions to each other; and a second motor reciprocally drives the treatment head bases in opposite directions to each other. Treatment heads are respectively supported by the treatment head bases; and a third motor drives the treatment heads in a plane substantially perpendicular to a backrest. A control circuit drives the respective motors respectively independently of one another. Each motor is a brushless motor. A control circuit corrects, corresponding to a load imposed on the brushless DC motor, a waveform of a drive signal applied to a winding of the brushless DC motor so as to allow a current flowing through the winding of the brushless DC motor to have a substantially sinusoidal waveform making it possible to reduce discomfort due to motor noise, and to accurately control the motor rotation speed.
Public/Granted literature
- US20080097260A1 Massage Machine Public/Granted day:2008-04-24
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