Title:
ROTOR FOR PERMANENT MAGNET SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JPS6084956
Kind Code:
A
Abstract:
PURPOSE:To readily and reliably couple a yoke and a tile-shaped permanent magnet by heating a cylindrical shape memory alloy to the prescribed temperature or higher and shrinking it. CONSTITUTION:A plurality of tile-shaped permanent magnets 3 are arranged on the surface of a cylindrical yoke 2. The outer periphery of the magnet 3 is coated with a cylindrical shape memory alloy 4. Then, the alloy 4 is heated and shrinked to austenite transition starting temperature or higher to couple the magnet 3 with the yoke 2. The alloy 4 used here has properties such as nonmagnetic property, high conductive resistor, high strength and high heat resistance such as, for example, Ni-Ti shape memory alloy preferably.
Inventors:
IIZUKA TADASHI
TANAKA KOUSUKE
TANAKA MAKOTO
TANAKA KOUSUKE
TANAKA MAKOTO
Application Number:
JP19070883A
Publication Date:
May 14, 1985
Filing Date:
October 14, 1983
Export Citation:
Assignee:
HITACHI LTD
International Classes:
H02K1/27; (IPC1-7): H02K21/08
Attorney, Agent or Firm:
Akio Takahashi
Previous Patent: A film transporting device with a nonreturn valve, and a manufacture device of a packaging bag
Next Patent: JPS6084957
Next Patent: JPS6084957