Title:
相対駆動装置
Document Type and Number:
Japanese Patent JP4685371
Kind Code:
B2
Abstract:
A small, lightweight relative drive device is provided, which is capable of producing large torque. The relative drive device of a two-phase magnetic excitation type according to an aspect of the invention comprises first and second coil groups and a magnet group. The magnet group includes magnets disposed with alternating north and south poles facing the first and second coil groups. The first and second coil groups are disposed at positions that are out of phase with each other by an odd multiple of pi/2 in electrical angles. The coils in the first and second coil groups have substantially no magnetic material cores, and the relative drive device has substantially no magnetic material yoke for forming a magnetic circuit.
Inventors:
Kei Takeuchi Satoshi
Takashi Kenjo
Kaji Shinto
Takashi Kenjo
Kaji Shinto
Application Number:
JP2004147130A
Publication Date:
May 18, 2011
Filing Date:
May 18, 2004
Export Citation:
Assignee:
Seiko Epson Corporation
Takashi Kenjo
Kaji Shinto
Takashi Kenjo
Kaji Shinto
International Classes:
F16H61/02; H02K16/04; B60L50/16; H02P7/00; H02P27/06; H02P27/08
Domestic Patent References:
| JP62173998A | ||||
| JP5472808A | ||||
| JP61164448A | ||||
| JP10127007A | ||||
| JP2001124163A | ||||
| JP63287350A | ||||
| JP624382U | ||||
| JP10191604A | ||||
| JP5122134B1 |
Attorney, Agent or Firm:
Meisei International Patent Office