CYLINDRICAL LINEAR MOTOR

Title:

CYLINDRICAL LINEAR MOTOR

Document Type and Number:

Japanese Patent JP2019187226

Kind Code:

A

Abstract:

To provide a cylindrical linear motor that can effectively improve thrust.SOLUTION: A cylindrical linear motor 1 according to the present invention includes an armature 2 having a cylindrical core 3 and a winding 5 mounted in a slot 4 provided on the outer periphery of the core 3, and a cylindrical field 6 in which the armature 2 is inserted inward so as to be movable in the axial direction and N and S poles are alternately arranged in the axial direction, and the field 6 includes a permanent magnet 10a having a main magnetic pole magnetized in a radial direction alternately arranged in the axial direction in a Halbach array, a permanent magnet 10b having a sub magnetic pole magnetized in the axial direction, and a back yoke 8 formed of a magnetic material disposed on the outer periphery of the permanent magnets 10a and 10b, and the axial length L1 of the permanent magnet 10a of the main magnetic pole is longer than the axial length L2 of the permanent magnet 10b of the sub-magnetic pole.SELECTED DRAWING: Figure 1

Inventors:

KANO YOSHIAKI
SATO KOSUKE
HAKAMATA SHINICHIRO
SUZUKI YUKI

Application Number:

JP2018197262A

Publication Date:

October 24, 2019

Filing Date:

October 19, 2018

Export Citation:

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