Rotor object

Japanese Patent JP6001504

B2

PROBLEM TO BE SOLVED: To provide a rotor body ensuring the concentricity accuracy of a rotation shaft and an outer peripheral surface of a permanent magnet, and the dimensional accuracy of an axis of the rotation shaft and the outer peripheral surface of the permanent magnet.SOLUTION: A rotor body 1 is composed of a rotation shaft 2 rotatably held in a motor case, two rotor collars 3 vertically fixed to the rotation shaft 2 with its center portions, and a permanent magnet 4 annularly held through the rotor collars coaxially with the rotation shaft. The rotor collar is composed of a base plate 31 which can be inserted in the permanent magnet, and three projecting pieces 33 projecting from the base plate to an outer diameter side than a permanent magnet inner diameter, and formed by being equally divided in a circumferential direction. The projecting pieces are bent and deformed to be friction-fixed with an inner peripheral surface of the permanent magnet when the rotor collars are inserted in the permanent magnet. The rotor collars are formed to have the projecting piece part thinner than the base plate part so as to easily bend and deform the projecting pieces from the base plate. Forming positions of the projecting pieces of each rotor collar are mutually shifted in an axis rotation direction of the rotation shaft.

WO/2016/039946	NON-CONTACT ROTARY FADER
JP2751204	PROBLEM TO BE SOLVED: To manufacture a flat rotor.
JP2019075954	SEALED TYPE ELECTRIC COMPRESSOR

Masayuki Motoyanagi
Saga Ken
Toshiyuki Ishikawa

JP2013115844A

October 05, 2016

May 31, 2013

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Oki Micro Technology Co., Ltd.

H02K1/27; H02K37/14

JP2006109636A
JP2000253609A
JP9215234A
JP2008278647A
JP2004208353A

Hirofumi Mizuno

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