公开(公告)号：US20200212787A1

公开(公告)日：2020-07-02

申请号：US16620972

申请日：2018-10-22

Applicant: KYB CORPORATION

Inventor： Yoshiaki KANO ,  Kousuke SATOU ,  Shinichirou HAKAMADA ,  Daichi SHIBAHARA

IPC: H02K41/03

Abstract: To achieve the foregoing object, a tubular linear motor of the present invention includes a core that has a tubular yoke and a plurality of teeth which are annular and provided at intervals in an axial direction on an outer periphery of the yoke; a winding mounted in a slot between the teeth; and a field magnet that is tubular, into which the core is movably inserted in the axial direction, and having N poles and S poles alternately arranged in the axial direction. An axial width W of a yoke-side inner peripheral edge of the teeth is larger than an axial width of an outer peripheral edge of the teeth.

公开(公告)号：US20180278138A1

公开(公告)日：2018-09-27

申请号：US15518283

申请日：2015-10-27

Applicant: KYB Corporation

Inventor： Kousuke SATOU

IPC: H02K41/03

CPC classification number: H02K41/031 ,  H02K41/02

Abstract: A linear actuator includes, a first tube provided with a plurality of coils placed thereinside, the plurality of coils being held by a tubular yoke; a rod movable in an axial direction inside the yoke; and a plurality of permanent magnets held by the rod while being lined up in the axial direction, the plurality of permanent magnets opposing the plurality of coils. An inner circumferential surface of the first tube has a groove running in a direction of an axis line, and wires connected to the plurality of coils are housed in the groove.

公开(公告)号：US20170250597A1

公开(公告)日：2017-08-31

申请号：US15518788

申请日：2015-10-27

Applicant: KYB Corporation

Inventor： Kousuke SATOU

IPC: H02K41/03 ,  H02K7/08

CPC classification number: H02K41/031 ,  H02K7/08

Abstract: A linear actuator includes; a first tube provided with a plurality of coils placed thereinside, the plurality of coils being held by a tubular yoke; a rod that is movable in an axial direction inside the yoke; a plurality of permanent magnets held by the rod while being lined up in the axial direction, the plurality of permanent magnets opposing the plurality of coils; and a detent member configured to prevent relative rotations of the first tube and the yoke.