公开(公告)号：US10819206B2

公开(公告)日：2020-10-27

申请号：US16073169

申请日：2016-02-02

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Toshiki Maruyama

IPC: H02K41/035 ,  G02B7/04 ,  H02K11/21

Abstract: A linear motor includes a motor movable body which has symmetrical structure with respect to a vertical plane and a horizontal plane that include the motor center axis line. Two linear bearings disposed in a space on the inner side of a rectangular tubular movable coil of the motor movable body are disposed symmetrically to the left and right of the center axis line so that the bearing support center coincides with the motor center axis line. Thrust generation sections of the motor movable body are disposed symmetrically above and below the motor center axis line, so that the thrust center coincides with the motor center axis line. Since the center of gravity of the motor movable body, the thrust center and the bearing support center coincide with the motor center axis line, a high responsive liner motor can be realized with no decrease in the thrust/movable body mass ratio.

公开(公告)号：US10250097B2

公开(公告)日：2019-04-02

申请号：US15565333

申请日：2015-04-17

Applicant: Harmonic Drive Systems Inc.

Inventor： Toshiki Maruyama ,  Kazumasa Furuta

IPC: F16C33/72 ,  H02K5/15 ,  H01L21/304 ,  H02K5/10 ,  H02K5/22 ,  H02K5/173 ,  H02K11/215 ,  F16C41/00 ,  F16C19/54 ,  F16C35/04

Abstract: A static pressure seal-equipped motor in which front and rear gaps are sealed by first and second static pressure seal portions disposed at first and second axial end portions of a motor rotating shaft protruding toward front and rear. Sealing gas supplied to sealing gaps of the first and second static pressure seal portions is caused to diverge and flow to chemical liquid atmospheres and a motor chamber or an encoder chamber into the chemical liquid atmospheres, and also prevent entry of chemical liquid-containing gas from the chemical liquid atmospheres into the motor chamber or encoder chamber.

公开(公告)号：US09772020B2

公开(公告)日：2017-09-26

申请号：US14772440

申请日：2014-05-16

Applicant: Harmonic Drive Systems Inc.

Inventor： Toshiki Maruyama

IPC: F16H49/00 ,  F16H57/025 ,  F16H57/029 ,  F16H57/04

CPC classification number: F16H49/001 ,  F16H57/025 ,  F16H57/029 ,  F16H57/04 ,  F16H2049/003

Abstract: A cup-type hollow strain wave gearing of a hollow actuator has a seal part assembled inside a cup-shaped externally toothed gear. The seal part seals between a boss of the externally toothed gear and a plug of the wave generator so as to prevent lubricant from leaking from the side of the externally toothed gear into a hollow part. Since the seal part employs an oil seal and an O-ring, it is able to be constituted inexpensively and to surely prevent leakage of low-viscosity lubricant.

公开(公告)号：US09800128B2

公开(公告)日：2017-10-24

申请号：US14423228

申请日：2013-01-18

Applicant: Harmonic Drive Systems Inc.

Inventor： Toshiki Maruyama ,  Tomoki Terashima

IPC: H02K41/03 ,  H02K41/035 ,  G02B7/02 ,  H02K11/21

CPC classification number: H02K41/0356 ,  G02B7/023 ,  H02K11/21

Abstract: A linear DC motor having first and second drive coils and first and second drive magnets arranged in a symmetrical state in relation to a motor central axis that passes through a sliding member in which a lens is mounted. The first and second coils on a moveable side are positioned to both the left and right sides of the sliding member. The first and second drive coils are designed to be independent without being affected by the shape, size, arrangement position, and the like of the sliding member, a linear guide, and a detection part. The first and second drive coils have high rigidity and do not deform when the sliding member slides. Accordingly, it is possible to obtain a linear DC motor that has a highly rigid moveable part and performs positioning action with high responsiveness and high precision.

公开(公告)号：US20150229196A1

公开(公告)日：2015-08-13

申请号：US14423228

申请日：2013-01-18

Applicant: Harmonic Drive Systems Inc.

Inventor： Toshiki Maruyama ,  Tomoki Terashima

IPC: H02K41/035 ,  G02B7/02 ,  H02K11/00

CPC classification number: H02K41/0356 ,  G02B7/023 ,  H02K11/21

Abstract: A linear DC motor having first and second drive coils and first and second drive magnets arranged in a symmetrical state in relation to a motor central axis that passes through a sliding member in which a lens is mounted. The first and second coils on a moveable side are positioned to both the left and right sides of the sliding member. The first and second drive coils are designed to be independent without being affected by the shape, size, arrangement position, and the like of the sliding member, a linear guide, and a detection part. The first and second drive coils have high rigidity and do not deform when the sliding member slides. Accordingly, it is possible to obtain a linear DC motor that has a highly rigid moveable part and performs positioning action with high responsiveness and high precision.

Abstract translation: 一种具有第一和第二驱动线圈的线性直流电动机，以及相对于通过其中安装有透镜的滑动构件的电动机中心轴以对称状态布置的第一和第二驱动磁体。 可移动侧的第一和第二线圈位于滑动构件的左侧和右侧。 第一和第二驱动线圈被设计成独立的，而不受滑动构件，线性引导件和检测部件的形状，尺寸，布置位置等的影响。 第一和第二驱动线圈具有高刚性并且当滑动构件滑动时不变形。 因此，可以获得具有高度刚性的可动部件的线性直流电动机，并且执行高响应性和高精度的定位动作。