公开(公告)号：US20200217389A1

公开(公告)日：2020-07-09

申请号：US16649001

申请日：2018-08-14

Applicant: KYB CORPORATION

Inventor： Yoshiyuki OGAWA ,  Kousuke SATOU ,  Fumiaki OONO ,  Ryohei ARAI

IPC: F16F9/32 ,  F15B15/14

Abstract: A hydraulic device of the present invention includes an outer tube, a bottom portion that closes one end of the outer tube, an inner tube inserted into the outer tube, a movable portion movable relatively to the outer tube and the inner tube in an axial direction, coupling members attached to the outer periphery of the inner tube, and fixing tools that are in contact with the coupling members and fix the inner tube to the bottom portion.

公开(公告)号：US20200244153A1

公开(公告)日：2020-07-30

申请号：US16636744

申请日：2018-08-14

Applicant: KYB CORPORATION

Inventor： Yoshiaki KANO ,  Kousuke SATOU ,  Shinichirou HAKAMADA

IPC: H02K41/03

Abstract: To achieve the above object, a cylindrical linear motor of the present invention includes a cylindrical linear motor includes: a core having a cylindrical yoke, and a plurality of teeth that are annular and are provided at intervals in an axial direction on an outer periphery of the yoke; a winding mounted in slots between the teeth; and a field which is cylindrical and in which the core is inwardly inserted movably in the axial direction to arrange N poles and S poles alternately in the axial direction, wherein the field has permanent magnets of a main magnetic pole radially magnetized and permanent magnets of a sub magnetic pole axially magnetized that are alternately arranged in a Halbach array in the axial direction, an axial length of the permanent magnet of the main magnetic pole is longer than an axial length of the permanent magnet of the sub magnetic pole, and the permanent magnet of the sub magnetic pole has a coercive force higher than that of the permanent magnet of the main magnetic pole.

公开(公告)号：US20170257015A1

公开(公告)日：2017-09-07

申请号：US15523357

申请日：2015-10-27

Applicant: KYB Corporation

Inventor： Kousuke SATOU

IPC: H02K41/03 ,  H02K5/167

CPC classification number: H02K41/031 ,  H02K5/1672 ,  H02K2207/03

Abstract: A linear actuator includes: a first tube provided with coils placed there inside, the coils being held by a yoke; a second tube mounted on an outer circumference of the first tube; a rod fixed to an end of the second tube at one end; and permanent magnets held by the rod while being lined up in an axial direction. When the first tube and the second tube are at a fully contracted position, a gap is provided between an end face of an outer tube of the second tube and an opposing face of a base portion of the first tube.

公开(公告)号：US20180254692A1

公开(公告)日：2018-09-06

申请号：US15759206

申请日：2016-08-31

Applicant: KYB Corporation ,  National Institute of Technology

Inventor： Kousuke SATOU ,  Yoshiaki KANO

IPC: H02K41/03

CPC classification number: H02K41/031 ,  H02K41/02 ,  H02K41/03 ,  H02K2207/03

Abstract: A linear motor includes a hollow cylindrical core, a shaft having a shape of a cylindrical tube, and a sleeve. A plurality of coils are arranged at axial intervals at the inner circumferential side of the core. A plurality of permanent magnets are arranged at axial intervals in the shaft. The shaft is axially movable inside the core. The sleeve is formed from a non-magnetic element, and disposed between the core and the shaft over the entire length of the core.

公开(公告)号：US20170244311A1

公开(公告)日：2017-08-24

申请号：US15521719

申请日：2015-10-27

Applicant: KYB Corporation

Inventor： Kousuke SATOU

IPC: H02K41/03

CPC classification number: H02K41/031 ,  H02K5/225

Abstract: A linear actuator includes: a first tube provided with coils placed there inside, the coils being held by a yoke; a second tube mounted on an outer circumference of the first tube; a rod fixed to an end of the second tube at one end; permanent magnets held by the rod while being lined up in an axial direction; and a joint portion disposed at the outer side of the second tube, to be joined with an external device. The rod has a non-magnetic portion at the one end fixed to the second tube. The second tube includes: an outer tube formed along the outer circumference of the first tube; and a small diameter portion that is formed along an outer circumference of the non-magnetic portion of the rod and smaller in diameter than the outer tube. The joint portion is disposed at the outer side of an end face of the small diameter portion of the second tube.

公开(公告)号：US20170324315A1

公开(公告)日：2017-11-09

申请号：US15521951

申请日：2015-10-27

Applicant: KYB Corporation

Inventor： Kousuke SATOU

IPC: H02K41/03

CPC classification number: H02K41/031 ,  H02K1/185 ,  H02K41/02 ,  H02K41/03

Abstract: A linear actuator includes: a first tube provided with coils placed there inside, the coils being held by a yoke; a rod configured to be movable in the yoke in an axial direction; and permanent magnets that are held by the rod while being lined up in the axial direction so as to oppose the coils. The first tube includes an inner tube and a base portion. The inner tube has a restriction portion projecting radially inward at one end thereof. The base portion is coupled to the other end of the inner tube. The yoke is inserted into the inner tube, and fixedly held between the restriction portion and the base portion.

公开(公告)号：US20170317570A1

公开(公告)日：2017-11-02

申请号：US15522610

申请日：2015-10-27

Applicant: KYB Corporation

Inventor： Kousuke SATOU

IPC: H02K41/03

CPC classification number: H02K41/031 ,  H02K41/02 ,  H02K41/03 ,  H02K2203/06

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; 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 wires connected to the plurality of coils and drawn to the outside of the linear actuator via an opening provided in the first tube; and a guard member provided in the first tube so as to be interposed between the wires and the rod.

公开(公告)号：US20170302146A1

公开(公告)日：2017-10-19

申请号：US15518319

申请日：2015-10-27

Applicant: KYB Corporation

Inventor： Kousuke SATOU

IPC: H02K41/02 ,  H02K11/21 ,  H02K41/03 ,  H02K7/08

CPC classification number: H02K41/02 ,  H02K7/08 ,  H02K11/21 ,  H02K41/031

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; 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 pair of trunnion shafts mounted coaxially on an outer circumferential portion of the first tube. At least one of the pair of trunnion shafts is provided with a through hole. Wires connected to the plurality of coils are drawn via the through hole.

公开(公告)号：US20210313867A1

公开(公告)日：2021-10-07

申请号：US17274492

申请日：2019-03-25

Applicant: KYB Corporation

Inventor： Yoshiaki KANO ,  Kousuke SATOU ,  Shinichirou HAKAMADA

IPC: H02K41/03

Abstract: A tubular linear motor according to the present invention includes a core having a plurality of teeth having a tubular shape and provided on an outer periphery at equal intervals in an axial direction, winding wires of three phases of U-phase, V-phase, and W-phase mounted in slots between the teeth and of the core, and a field magnet having a tubular shape, in which the core is inserted inward so as to be movable in the axial direction, and a north magnetic pole and a south magnetic pole are alternately disposed on the inner periphery side in the axial direction, the field magnet has a yoke between the magnetic poles and in the axial direction, and the tubular linear motor has a two-pole 6n slot structure in which 6n slots are facing two poles, provided that n is an integer of 1 or more.

公开(公告)号：US20200217333A1

公开(公告)日：2020-07-09

申请号：US16649034

申请日：2018-08-14

Applicant: KYB CORPORATION

Inventor： Yoshiyuki OGAWA ,  Kousuke SATOU ,  Fumiaki OONO ,  Ryohei ARAI

IPC: F15B15/14 ,  C25D11/04

Abstract: An actuator includes a cylinder made of an aluminum alloy, a bottom part that closes one end of the cylinder, a cylindrical inner rod that is inserted in the cylinder to form an annular gap to the cylinder, a cylindrical piston rod that is closed at one end, slidably contacts with an outer periphery of the inner rod, and defines, together with the inner rod, an extension-side chamber, and a piston that is provided on the piston rod, slidably contacts with an inner periphery of the cylinder, and defines a compression-side chamber between the cylinder and the piston rod, in which the bottom part has a communication hole leading to the annular gap, and the cylinder has coating formed on the inner periphery by surface treatment using an electrolytic solution.