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    • 9. 发明专利
    • IT8667302D0
    • 1986-04-11
    • IT6730286
    • 1986-04-11
    • YAMAMOTO SEIJI
    • YAMAMOTO SEIJI
    • G03B9/08G03B9/10H01F7/122H01F7/14H01F7/16H01H51/22H01H51/24G05B
    • A magnetically operated actuator which comprises a generally elongated operating element displaceable between first and second positions, an electromagnet assembly for driving the operating element to displace between the first and second positions and comprising an iron core and a solenoid coil disposed around the iron core, a permanent magnet assembly rigidly mounted on the operating element and having a pair of opposite poles different in polarity from each other and having a magnetic field which is developed between the opposite poles, and a stopper member for restricting the stroke of movement of the operating element between the first and second positions. The electromagnet assembly is fixedly supported in position with one of the opposite ends of the iron core situated in the magnetic field developed between the poles of the permanent magnet assembly. The first and second positions are located in the vicinity of the opposite poles of the permanent magnet assembly.
    • 10. 发明专利
    • MAGNETICALLY OPERATED ACTUATOR
    • GB2194100A
    • 1988-02-24
    • GB8718668
    • 1987-08-06
    • YAMAMOTO SEIJI
    • YAMAMOTO SEIJI
    • H01H51/22H01F7/08H01F7/14
    • A magnetically operated actuator comprises a support structure (10), a generally elongated operating element (14) mounted on the support structure for selective displacement between first and second positions, and at least one electromagnet assembly for driving the operating element (14) to displace the latter between the first and second positions under the influence of magnetism emanating therefrom. The electromagnet assembly comprises a first magnetic member (16) and a solenoid unit (20) around the first magnetic member (16) and adapted to develop a magnetic field when electrically energized. The first magnetic member (16) is then exposed in the magnetic field developed by the solenoid unit (20) when the solenoid unit (20) is electrically energized. There are at least two second magnetic members (33,34) cooperable with the first magnetic member (16). One of the first and second magnetic members is fixed to the support structure and the other of the first and second magnetic members is fixed to the operating element while the solenoid unit (20) is fixed to the support structure (10).