MAGNET UNIT AND ELEVATOR GUIDING APPARATUS

WIPO Patent Application WO/2005/108273

A2

A magnet unit includes a first magnetic pole (7a), a second magnetic pole (7b) and a third magnetic pole (7c) at a center between the first magnetic pole (7a) and the second magnetic pole (7b), providing an E-shaped configuration. In the magnet unit, a first magnet is defined between the first magnetic pole (7a) and the third magnetic pole (7c) by connecting two electromagnets (71aa, 73aa) with each other through a permanent magnet (72a), while a second magnet is defined between the second magnetic pole (7b) and the third magnetic pole (7c) by connecting two electromagnets (71ba, 73ba) with each other through a permanent magnet (72b). With this configuration, it is possible to reduce a deviation in the length of respective magnetic paths from the permanent magnets ( 72a, 72b ) up to their respective magnetic poles. By controlling exciting currents to the respective magnetic poles. By controlling exciting currents to the respective electromagnets ( 71aa, 73aa, 71ba, 73ba ), it is also possible to adjust fluxes ( or flux density ) in respective directions x, y individually.

ITO HIROAKI
MORISHITA MIMPEI
TONAMI YOSUKE

PCT/JP2005/008845

November 17, 2005

May 10, 2005

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TOSHIBA ELEVATOR KK (JP)
ITO HIROAKI
MORISHITA MIMPEI
TONAMI YOSUKE

B66B1/06; B66B1/34; B66B7/02; B66B7/04; B66B11/02; G01G7/02; G01G19/18; (IPC1-7): B66B7/04; B66B7/02

EP1067083A2	2001-01-10
GB2262932A	1993-07-07
US4754849A	1988-07-05
US5439075A	1995-08-08
US6510925B1	2003-01-28
GB440244A	1935-12-23
US4722409A	1988-02-02
US4429757A	1984-02-07
US4545448A	1985-10-08

Miyoshi, Hidekazu (2-8 Toranomon 1-chome, Minato-k, Tokyo 01, JP)

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