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Title:
ELECTROMAGNETIC DEVICE
Document Type and Number:
Japanese Patent JPH01135005
Kind Code:
A
Abstract:

PURPOSE: To reduce friction between a movable iron core and its case and to obtain an electromagnetic device with less variation in dynamic characteristics by mixing spherical fine particles within a damping liquid to be a suspension liquid.

CONSTITUTION: Spherical fine particles 22 are mixed into a damping liquid 4. The fine particles 22 enter a space between the outer surface of a movable iron core 3 and the inner surface of a container 1 to prevent the outer surface of the movable iron core 3 from being in direct contact with the inner surface of the container 1 due to eccentricity or slanting of the movable iron core 3. When the movable iron core 3 is attracted by a fixed iron core 2, the fine particles 22 rotate and move in the space between the movable iron core 3 and inner surface of the container 1 since they are in spherical shape, causing reduction of friction between the surfaces and variation of dynamic characteristics of an electromagnetic device.


Inventors:
Yamazaki, Satoru
Murakami, Sadatoshi
Application Number:
JP1987000294563
Publication Date:
February 09, 1999
Filing Date:
November 20, 1987
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
B65B7/18; B65B9/22; (IPC1-7): B65B9/22; B65B7/18
Attorney, Agent or Firm:
浅村 皓 (外3名)



 
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