公开(公告)号：US20200083792A1

公开(公告)日：2020-03-12

申请号：US15746937

申请日：2015-08-07

Applicant: Hitachi, Ltd.

Inventor： Junnosuke NAKATSUGAWA ,  Yasuaki AOYAMA

IPC: H02K41/03 ,  H02K1/14

Abstract: To provide a linear motor and device which suppress contact of a movable element with a core. The linear motor includes: a movable element having a permanent magnet; and an armature having magnetic pole teeth located in an up/down direction of the movable element, a winding wound around the magnetic pole teeth, and an arm part extending in a right/left direction of the movable element. The movable element and the armature make relative movement in a front/back direction. The linear motor includes a protective member which is located between the arm part and the movable element and in which a movable element facing surface facing the movable element is located inside an outer end of the winding.

公开(公告)号：US20220329142A1

公开(公告)日：2022-10-13

申请号：US17615985

申请日：2020-05-18

Applicant: Hitachi, Ltd. ,  The University of Tokyo

Inventor： Yasuaki AOYAMA ,  Junnosuke NAKATSUGAWA ,  Kunihiko NORIDUKI ,  Takafumi KOSEKI ,  Salman AHMED ,  Yuto MITSUI

IPC: H02K41/03 ,  H02K3/28

Abstract: A linear motor achieves both a decrease in pulsation and an increase in propulsion with a 6n teeth structure provided with: a first mover for holding permanent magnets arranged longitudinally; a first stator having 6n teeth that are arranged so as to oppose the first mover and 6n windings that are wound on the respective teeth; a second mover holding permanent magnets longitudinally; a second stator having 6n teeth that are arranged in the longitudinal direction so as to oppose the second mover and 6n windings that are wound on the respective teeth The permanent magnets opposing each other in the first mover and the second mover are disposed with a phase difference of π/2 in the moving direction of the two movers, and electrical currents with a phase difference of (1+6m) π/3 or (2+6m) π/3 are supplied to the windings opposing each other in the first stator and the second stator.