ROTARY TYPE ELECTROMAGNETIC ACTUATOR

PROBLEM TO BE SOLVED: To decrease diametric dimension and perform miniaturization by providing a core member on an axial line of a rotary shaft, in a rotary type electromagnetic actuator turning the rotary shaft by a magnetic field generated in the core member and a magnet, by providing the core mem...

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Bibliographic Details
Main Authors KUDO MUNEHIRO, KAI KEIICHI, KUMAGAI KATSUTO, SATO HISAAKI
Format Patent
LanguageEnglish
Published 22.12.1997
Edition6
Subjects
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To decrease diametric dimension and perform miniaturization by providing a core member on an axial line of a rotary shaft, in a rotary type electromagnetic actuator turning the rotary shaft by a magnetic field generated in the core member and a magnet, by providing the core member in a position opposed to the magnet. SOLUTION: A core member 17 is arranged so as to be opposed to a pair of sector magnets provided in one side of a rotary shaft. This core member 17 is constituted by a cylindrical core 18, bar-shaped core 23 and a plate-shaped core 27. In a bar-shaped part 24 of the bar-shaped core 23, forward/reverse rotational coils are wound. By inputting a current to each of these coils, in a sector cover part 21 of the cylindrical core 18 and a sector cover part 25 of the bar-shaped core 23, a magnetic field of different polarity is generated. A magnetic path sectional area of the core member 17 can be almost fixed by a shape of each member, magnetic field leakage is suppressed, and responsiveness of turning action of the rotary shaft can be enhanced.
Bibliography:Application Number: JP19960171869