マグネット型モータの回転子の被覆部材

Title:

マグネット型モータの回転子の被覆部材

Document Type and Number:

Japanese Patent JP6494913

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a coating member of a rotor of a magnet type motor which can be put into close contact with the surface of the rotor readily, and by which a permanent magnet can be prevented from bolting out from a rotor rotating at a high speed in an effective and simple way.SOLUTION: A coating member of a rotor of a magnet type motor comprises a tube member formed from a thermoplastic resin including a polymer having a repeating unit expressed by the following general formula (A): -(Ar-C(=O)-Ar-O-Ar-O)-(A). [In the general formula (A), the group Ar, the group Arand the group Arindependently represent an aromatic hydrocarbon group which may have a substituent group]. The coating member has the characteristics (1) and (2) described below. (1) The shrinkage ratio of the circumference of the tube after heating at 150°C for 30 minutes is 10% or larger. (2) The tensile elasticity of the tube in TD direction after heating at 170°C for one hour subsequently to the 30-minute 150°C heating is 3,000 MPa or larger.

Inventors:

Satoshi Wakinaka
Teruo Kanai

Application Number:

JP2014006417A

Publication Date:

April 03, 2019

Filing Date:

January 17, 2014

Export Citation:

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