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1. (WO2013122031) LINEAR MOTOR

Pub. No.:    WO/2013/122031    International Application No.:    PCT/JP2013/053200
Publication Date: Fri Aug 23 01:59:59 CEST 2013 International Filing Date: Wed Feb 13 00:59:59 CET 2013
IPC: H02K 41/03
Applicants: HITACHI METALS, LTD.
日立金属株式会社
Inventors: MITA Masahiro
三田 正裕
MASUZAWA Masahiro
増澤 正宏
KAWAKAMI Makoto
川上 誠
Title: LINEAR MOTOR
Abstract:
The purpose is to provide a linear motor such that the amount of magnet used is not increased even when the range of movement of a rotor is long. A linear motor is provided with a stator (2) of magnetic material and a rotor (1). The rotor (1) includes a coil in which a plurality of magnets and armature cores which are alternately linked along a moving direction is disposed. The magnets adjacent to each other via the armature cores are magnetized in mutually opposite directions. The stator (2) includes two opposed plate-like parts extending in the direction of movement of the rotor (1) and magnetically coupled to each other. On each of the opposed surfaces of the two plate-like parts, bar-like and substantially cuboid tooth parts of magnetic material are arranged at predetermined intervals. The rotor (1) is configured to move between the opposed two plate-like parts along the direction of arrangement of the tooth parts.