ELECTROMAGNETIC SWITCH

PROBLEM TO BE SOLVED: To provide an electromagnetic switch capable of lowering operation noise through restraint of transmission of impact noise generated as a plunger gets collided with a stationary core 6. SOLUTION: The stationary core 6 is set in division into a base part 6a opposed to the plunge...

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Bibliographic Details
Main Author NOYA HIDEYA
Format Patent
LanguageEnglish
Published 26.06.2008
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC SWITCHES
ELECTRICITY
EMERGENCY PROTECTIVE DEVICES
RELAYS
SELECTORS
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Summary:PROBLEM TO BE SOLVED: To provide an electromagnetic switch capable of lowering operation noise through restraint of transmission of impact noise generated as a plunger gets collided with a stationary core 6. SOLUTION: The stationary core 6 is set in division into a base part 6a opposed to the plunger, and a disc part 6b press-fitted into the base part 6a. The disc part 6b is structured by laminating a plurality of metal plates 60 (for instance, iron plates) set in a ring shape, and that, a space is partly or wholly secured between the adjacent metal plates 60. With this structure, a spring constant of the disc part 6b as a whole gets small, so that impact at collision of the plunger with the stationary core 6 due to attraction by the electromagnet is alleviated, and impact noise generated at the collision can be curtailed. COPYRIGHT: (C)2008,JPO&INPIT
Bibliography:Application Number: JP20060329703