Title:
【発明の名称】電磁式の回転調整器
Document Type and Number:
Japanese Patent JPH04507327
Kind Code:
A
Abstract:
PCT No. PCT/DE90/00595 Sec. 371 Date Feb. 12, 1992 Sec. 102(e) Date Feb. 12, 1992 PCT Filed Aug. 3, 1990 PCT Pub. No. WO91/03062 PCT Pub. Date Mar. 7, 1991.A rotary actuator (1) with magnetically acting restoring element (18), particularly for controlling a throttle cross-section, is intended to be simplified in its structure and the torque variation of the restoring element (18) is to be improved. For this purpose, the restoring element (18) is constructed of ferromagnetic but not permanently magnetic, material and arranged in the area of the permanent magnet segments (10) of the motor actuator (2). Due to the asymmetrical construction of the restoring element (18) with three short arms (22 to 24) and one extended arm (25), the maximum torque generated by the element (18) is reduced and the restoring angle, from which the element (18) returns back into its desired locking position, is increased. The rotary actuator (1) is suitable, in particular, as rotary idling actuator for internal combustion engines.
Inventors:
Bertolini, Thomas
Helm, Werner
Helm, Werner
Application Number:
JP51049290A
Publication Date:
December 17, 1992
Filing Date:
August 03, 1990
Export Citation:
Assignee:
Robert Bosch GmbH
International Classes:
H01F7/08; F02D9/16; H01F7/14; (IPC1-7): H01F7/08
Attorney, Agent or Firm:
Toshio Yano (2 outside)