公开(公告)号：US20200049237A1

公开(公告)日：2020-02-13

申请号：US16607757

申请日：2017-06-21

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA

IPC: F16H25/20 ,  F16H49/00 ,  F16D3/06

Abstract: A rotary actuator has a hollow motor and hollow reduction gears arranged coaxially on either side of the hollow motor. A rotary shaft is arranged so as to pass through a hollow motor shaft of the hollow motor. The hollow reduction gears have hollow input shafts connected to the shaft ends on either sides of the hollow motor shaft. The hollow reduction gears have hollow output shafts connected to sections of the rotary shaft protruding from both ends of the hollow motor shaft. The connection position of the hollow output shaft with respect to the rotary shaft can be adjusted in the rotational direction. A load is rotationally driven by the rotary shaft. By increasing the axial length of the hollow motor, it is possible to obtain a small-diameter rotary actuator having a rotational output with large torque.

公开(公告)号：US20180195433A1

公开(公告)日：2018-07-12

申请号：US15578506

申请日：2016-04-22

Applicant: NISSAN MOTOR CO., LTD. ,  HARMONIC DRIVE SYSTEMS INC. ,  HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Ryosuke HIYOSHI ,  Yoshiaki TANAKA ,  Yoshihide KIYOSAWA ,  Jun HANDA ,  Kishiro NAGAI ,  Junichiro ONIGATA ,  Yoshihiko YAMADA

IPC: F02B75/04 ,  F02B75/32 ,  F02D15/02 ,  F16H1/28 ,  F16H1/32

CPC classification number: F02B75/045 ,  F02B75/04 ,  F02B75/32 ,  F02D15/02 ,  F16H1/28 ,  F16H1/32 ,  F16H2001/323

Abstract: Disclosed is a variable compression ration mechanism in which a control shaft is rotated and driven by an electric motor through a wave gear reducer. The wave gear reducer includes: a first internal gear member; an external gear member arranged concentrically inside the internal gear member; a wave generator arranged inside the external gear member; and a second internal gear member, wherein a ratio of the number of teeth of a fixed gear portion of the first internal gear member to the number of teeth of a first gear portion of the external gear member is set lower than a ratio of the number of teeth of an output-side gear portion of the second internal gear member to the number of teeth of a second gear portion of the external gear member.

公开(公告)号：US20170211677A1

公开(公告)日：2017-07-27

申请号：US15327830

申请日：2015-07-03

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA ,  Jun HANDA ,  Noboru TAKIZAWA ,  XinYue ZHANG

IPC: F16H49/00

CPC classification number: F16H49/001 ,  F16H1/32 ,  F16H55/12 ,  F16H2049/003

Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different tooth numbers, and is flexed into an ellipsoidal shape by a wave generator. When the theoretical values of the radial flexing amounts at major-axis positions of the first and second external teeth flexed into the ellipsoidal shape are expressed by d1=m1n1 and d2=m2n2 (m1 and m2 represent the modules of the first and second external teeth, and n1 and n2 represent positive integers), the radial flexing amount of the first and second external teeth flexed by the wave generator satisfies d=(d1+d2)/ω (1.4≦ω≦2.6). Accordingly, a dual-type strain wave gearing can be achieved with which the first and second external teeth having different numbers can be suitably flexed to form excellent mating states with respective internally toothed gears.

公开(公告)号：US20160178044A1

公开(公告)日：2016-06-23

申请号：US14896980

申请日：2014-06-19

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Noboru TAKIZAWA ,  Yuya MURAYAMA ,  Yoshihide KIYOSAWA

IPC: F16H49/00

CPC classification number: F16H49/001

Abstract: The externally toothed gear of the strain wave gear device is provided with first external teeth, which are capable of meshing with first internal teeth on the stationary side, and second external teeth, which are capable of meshing with second internal teeth on the driving side. The numbers of the first and second external teeth differ. The number of the first internal teeth is greater than the number of the first external teeth. The number of the second internal teeth is less than the number of the second external teeth. Using the externally toothed gear, which is provided with first and second external teeth that differ in number, a strain wave gear device with a low reduction ratio in which the velocity ratio is less than 30 can be achieved.

Abstract translation: 应变波齿轮装置的外齿轮具有能够与固定侧的第一内齿啮合的第一外齿和能够与驱动侧的第二内齿啮合的第二外齿。 第一和第二外齿的数量不同。 第一内齿的数量大于第一外齿的数量。 第二内齿的数量小于第二外齿的数量。 使用具有不同数量的第一外齿和第二外齿的外齿轮，可以实现速度比小于30的低减速比的应变波齿轮装置。

公开(公告)号：US20160084367A1

公开(公告)日：2016-03-24

申请号：US14890605

申请日：2013-06-20

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yuya MURAYAMA ,  Yoshihide KIYOSAWA

IPC: F16H49/00 ,  F16C25/08

CPC classification number: F16H49/001 ,  F16C25/083

Abstract: In this hollow strain wave gearing unit, a shaft end part of a hollow rotary shaft of a wave generator is located inside a cup-shaped flexible external gear. The shaft end part is supported by a bearing attached to a bearing holder that is fixed to a boss of the flexible external gear. In the bearing holder, an elastic leaf spring part that is displaceable in the axial direction constitutes a part that supports a holder body part that holds the bearing. A preload is applied by the leaf spring part to the bearing in the axial direction. Thus, there is no need to separately arrange a preload application member inside the flexible external gear, and the axial length of the hollow strain wave gearing unit can be shortened.

Abstract translation: 在这种中空应变波传动装置中，波发生器的中空旋转轴的轴端部位于杯形柔性外齿轮内。 轴端部由附接到固定到柔性外齿轮的凸台的轴承座的轴承支撑。 在轴承座中，沿轴向移动的弹性板簧部件构成支撑保持轴承的保持器主体部的部件。 通过板簧部分在轴向方向上对轴承施加预载荷。 因此，不需要在弹性外齿轮内部分别设置预加载部件，能够缩短中空应变波传动装置的轴向长度。

公开(公告)号：US20160047451A1

公开(公告)日：2016-02-18

申请号：US14397526

申请日：2013-05-08

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Tatsuro HOSHINA ,  Yoshihide KIYOSAWA

IPC: F16H49/00 ,  F16C33/46 ,  F16C19/46

CPC classification number: F16H49/001 ,  F16C19/463 ,  F16C33/4641 ,  F16H2049/003

Abstract: A wave generator of a strain wave gearing has a rigid plug and a needle roller bearing mounted on the plug external peripheral surface. The plug external peripheral surface has a retainer engaging part for engaging with a retainer that would move in an axis line direction and for restricting the movement thereof along the axis line direction. The retainer has an outer ring engaging part for engaging with an outer ring that would move in the axis line direction and for restricting the movement thereof along the axis line direction. The movements of the retainer and the outer ring can be restricted without providing a separate member. A wave generator of a strain way gearing can be realized, which is provided with a roller bearing capable of restricting the movement of the outer ring with a simple structure.

Abstract translation: 应变波传动装置的波发生器具有安装在插头外周面上的刚性塞子和滚针轴承。 插头外周面具有保持器接合部，用于与将沿轴线方向移动并用于限制其沿着轴线方向的移动的保持器接合。 保持器具有外环接合部分，用于与将在轴线方向上移动并用于限制其沿着轴线方向的移动的外环接合。 可以限制保持器和外圈的移动，而不需要提供单独的构件。 可以实现应变传动装置的波发生器，其具有能够以简单的结构限制外圈的运动的滚子轴承。