Title:
ELECTROMAGNETIC ACTUATOR
Document Type and Number:
Japanese Patent JP3415275
Kind Code:
B2
Abstract:
PURPOSE: To suppress increase of manufacturing cost while reducing the size by securing coils serving as a stator to the housing such that the coils face permanent magnets on the inside of a ring rotor, conducting each coil selectively to rotate the ring rotor and stopping the ring rotor at the end of rotation.
CONSTITUTION: A ring rotor 4 is arranged while arranging a plurality of permanent magnets 5A-5D having different poles on the inner circumferential face. The ring rotor 4 is supported rotatably on the housing 1. Coils 3A-3C constituting the stator are then secured to the housing 1 while facing the permanent magnets 5A-5D on the inside of the ring rotor 4. Each coil 3A-3C is fed with power selectively, pole by pole, through a switch and the ring rotor 4 is stopped by means of a ball 8, a ball retainer 8A and a spring 9 at a position determined by rotation of any one of the coils 3A-3C upon power supply. This structure reduces the size of electromagnetic actuator while suppressing increase in the manufacturing cost.
Inventors:
Yasuhiko Hara
Fumihiko Tsuji
Katsuto Miyoshi
Fumihiko Tsuji
Katsuto Miyoshi
Application Number:
JP15755894A
Publication Date:
June 09, 2003
Filing Date:
July 08, 1994
Export Citation:
Assignee:
Kayaba Industry Co., Ltd.
Tokai Electronics Industry Co., Ltd.
Tokai Electronics Industry Co., Ltd.
International Classes:
B60G17/015; F16F9/46; H02K7/102; H02K26/00; H02K37/12; H02K37/22; (IPC1-7): H02K37/22; B60G17/015; F16F9/46; H02K37/12
Domestic Patent References:
| JP3243154A | ||||
| JP6154855A | ||||
| JP1269828A | ||||
| JP5863099A | ||||
| JP6430447A | ||||
| JP5116520A | ||||
| JP2280653A | ||||
| JP63176369U | ||||
| JP6165711U |
Attorney, Agent or Firm:
Masaki Goto (1 person outside)
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