Title:
ELECTROMAGNETIC COUPLING DEVICE
Document Type and Number:
Japanese Patent JPS58187630
Kind Code:
A
Abstract:
PURPOSE:To effectively utilize electron beam welding in the manufacture of the electromagnetic coupling device by a structure wherein a rotor, a pulley and a non-magnetic spacer are made into one piece by electron beam welding. CONSTITUTION:When an exciting coil 2 is deenergized, because of no magnetic flux, an armature 7 is separated from the rotor 3 by means of the elastic force of a plate spring 8, resulting in transmitting no power. When the coil 2 is energized, the magnetic flux PHI is developed, resulting in attracting the armature 7 to the rotor 3 and consequently transmitting the turning force transmitted to the pulley 6 to a driven shaft. Because the diameter of the spacer 4 of the rotor 3 is designed to be larger than the pulley 6, the pulley 6, the spacer 4 and the remaining parts of the rotor 3 are manufactured separately and then made into one piece by electron-beam-welding therebetween at the portions 13, 14, 15, 16 and 18. The thermal strains develped in the respective parts due to electron beam are so small that no double matching is eliminated. The welding is performed in their thrust direction or from their outer periphery in their radial direction.
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Inventors:
KOBAYASHI RIYOUJI
Application Number:
JP7427782A
Publication Date:
November 01, 1983
Filing Date:
April 28, 1982
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
F16D27/112; F16D55/00; (IPC1-7): F16D27/14; F16D55/28
Domestic Patent References:
| JPS5560733A | 1980-05-08 | |||
| JP43028323A |
Attorney, Agent or Firm:
Masuo Oiwa
Previous Patent: JPS58187629
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