公开(公告)号：US20180163622A1

公开(公告)日：2018-06-14

申请号：US15578432

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 having an oval outer shape and 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 greater 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：US20170059024A1

公开(公告)日：2017-03-02

申请号：US15308412

申请日：2014-05-08

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA

IPC: F16H49/00

CPC classification number: F16H49/001 ,  F16H2049/003

Abstract: In this wave generator for a strain wave gearing, a plug thereof is configured from a plurality of split plug segments that are joined in the axial direction. Wave gearings are installed to the split outer peripheral surfaces of the split plug segments by press fitting, and thereafter the split plug segments can be joined in the axial direction. It is possible to easily produce the wave generator in which a plurality of wave bearings are press fitted, in parallel arrangement, on the non-circular outer peripheral surface.

Abstract translation: 在这种用于应变波齿轮的波发生器中，其塞子由沿轴向连接的多个分裂塞段构成。 波形齿轮通过压配合安装在分割塞片的分割外周面上，然后可以将分离塞片段沿轴向连接。 可以容易地制造波形发生器，其中多个波形轴承平行地压配合在非圆形外周面上。

公开(公告)号：US20230035665A1

公开(公告)日：2023-02-02

申请号：US17964081

申请日：2022-10-12

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Hiroaki KIMURA ,  Yoshihide KIYOSAWA ,  Jun HANDA

IPC: F16H49/00 ,  F16H57/021

Abstract: A strain wave gearing unit has a unit housing, a strain wave gearing, and a bearing device. Balls of a bearing part of the bearing device are positioned on the diametrically outer side with respect to a cylindrical barrel part of an externally toothed gear. The diameter S of the balls is 0.05 to 0.15 times the pitch diameter D of the externally toothed gear. The centers of the balls are positioned between a point at a distance of 1.2 times the diameter S toward the cylindrical-barrel-part side from an inner-side end surface of a diaphragm along a center axis and a point at a distance of 1 times the diameter S toward a side opposite the cylindrical barrel part from the inner-side end surface. The bearing device can be configured to be used in common for strain wave gearing units having different axial lengths.

公开(公告)号：US20200284333A1

公开(公告)日：2020-09-10

申请号：US16753394

申请日：2018-09-20

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA ,  Norio SHIROKOSHI

IPC: F16H49/00 ,  F16H57/02 ,  F16C17/10

Abstract: In a unit-type strain wave gearing, a rotating-side member, which is constituted by a second internally toothed gear and an output shaft is supported, via a first sliding bearing and a second sliding bearing, on a fixed-side member so as to be capable of relative rotation, the fixed-side member being constituted by a unit housing and a first internally toothed gear. Sliding bearing surfaces of the first sliding bearing and sliding bearing surfaces of the second sliding bearing are defined by a conic surface having a central axis line as a center line. It is possible to realize a unit-type strain wave gearing which is advantageous in making smaller and more compact than when a roller bearing is used. It is also easier to adjust the gap between the sliding bearing surfaces because a radial sliding bearing having no function to adjust the radial gap is obviated.

公开(公告)号：US20170211678A1

公开(公告)日：2017-07-27

申请号：US15327841

申请日：2015-07-03

Applicant: Harmonic Drive Systems Inc.

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

IPC: F16H49/00

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

Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers. The first and second external teeth are flexed by a wave generator by the same flexing amount, into an ellipsoidal shape. The tooth depth of tooth profiles of the first external teeth having a low teeth number is smaller than the tooth depth of tooth profiles of the second external teeth having a high teeth number. A dual-type strain wave gearing can be achieved with which the first and second external teeth having different teeth numbers can be suitably flexed to form excellent meshing states with respective internally toothed gears.

公开(公告)号：US20160178045A1

公开(公告)日：2016-06-23

申请号：US14910340

申请日：2013-08-06

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Jun HANDA ,  Yu NAKAGAWA ,  Yoshihide KIYOSAWA

IPC: F16H49/00

CPC classification number: F16H49/001

Abstract: A reduction drive-side mounting end face on a strain wave gearing reduction drive unit has a circular center hole, and a motor-side mounting end face on a motor has a circular projection. The strain wave gearing reduction drive unit and motor are coaxially mounted by the circular projection being fit into the circular center hole with a regulating ring therebetween. The regulating ring, which regulates the motion of a flexible external gear, can be easily mounted to the strain wave gearing reduction drive unit by using the motor. The strain wave gearing reduction drive unit can be mounted to a motor comprising a circular projection with a different outer diameter by using a regulating ring with a different inner diameter.

Abstract translation: 应变波减速驱动单元上的减速驱动侧安装端面具有圆形的中心孔，并且马达上的电动机侧安装端面具有圆形突起。 应变波齿轮减速驱动单元和马达通过圆形突出部同轴地安装在圆形中心孔中，其间具有调节环。 通过使用电动机，可以容易地将调节环形柔性外齿轮的运动的调节环安装到应变波减速驱动单元。 应变波减速驱动单元可以通过使用具有不同内径的调节环来安装到包括具有不同外径的圆形突起的马达。

公开(公告)号：US20210404544A1

公开(公告)日：2021-12-30

申请号：US17191775

申请日：2021-03-04

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Hiroaki KIMURA ,  Yoshihide KIYOSAWA ,  Jun HANDA

IPC: F16H49/00 ,  F16H57/021

Abstract: A strain wave gearing unit has a unit housing, a strain wave gearing, and a bearing device. Balls of a bearing part of the bearing device are positioned on the diametrically outer side with respect to a cylindrical barrel part of an externally toothed gear. The diameter S of the balls is 0.05 to 0.15 times the pitch diameter D of the externally toothed gear. The centers of the balls are positioned between a point at a distance of 1.2 times the diameter S toward the cylindrical-barrel-part side from an inner-side end surface of a diaphragm along a center axis and a point at a distance of 1 times the diameter S toward a side opposite the cylindrical barrel part from the inner-side end surface. The bearing device can be configured to be used in common for strain wave gearing units having different axial lengths.

公开(公告)号：US20170219050A1

公开(公告)日：2017-08-03

申请号：US15500605

申请日：2014-08-06

Applicant: Harmonic Drive Systems Inc.

Inventor： Jun HANDA ,  Yoshihide KIYOSAWA ,  Noboru TAKIZAWA ,  Xin Yue ZHANG

IPC: F16H1/32 ,  F16H49/00

CPC classification number: F16H1/32 ,  F16H3/70 ,  F16H49/001 ,  F16H55/0833 ,  F16H57/02 ,  F16H2049/003

Abstract: A relieving portion is formed between a first external tooth portion and a second external tooth portion in the external teeth of a flexible externally toothed gear of a flat strain wave gearing. The length L1 of the relieving portion in the tooth trace direction is within the range of 0.1 to 0.5 of the tooth width L of the external teeth. The maximum relieving amount t from the tooth top land of an external tooth in the relieving portion is 3.3×10−4

公开(公告)号：US20170175869A1

公开(公告)日：2017-06-22

申请号：US15322664

申请日：2015-07-03

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Yoshihide KIYOSAWA ,  Jun HANDA ,  Noboru TAKIZAWA ,  Xin Yue ZHANG

IPC: F16H49/00 ,  F16C19/08

CPC classification number: F16H49/001 ,  F16C19/08 ,  F16C2361/61 ,  F16H1/32 ,  F16H2049/003

Abstract: An externally toothed gear of a dual-type strain wave gearing is provided with first and second external teeth having different teeth numbers, and is flexed into an ellipsoidal shape by a wave generator. When t(1) represents the tooth bottom rim wall thickness of the first external teeth, and t(2) represents the tooth bottom rim wall thickness of the second external teeth, the ratio of t(1)/t(2) is set to a value satisfying 0.5>t(1)/t(2)

公开(公告)号：US20160109014A1

公开(公告)日：2016-04-21

申请号：US14400358

申请日：2013-06-20

Applicant: Harmonic Drive Systems Inc.

Inventor： Yuya MURAYAMA ,  Yoshihide KIYOSAWA

IPC: F16H49/00

CPC classification number: F16H49/001

Abstract: A hollow-type strain wave gearing unit has a cup-shaped flexible externally-toothed gear, in which one shaft end portion of a hollow rotation shaft of a wave generator is located. The shaft end portion is supported by a bearing mounted on a bearing holder fixed to a boss of the flexible externally-toothed gear. The bearing holder has a retainer holding portion to prevent a retainer of a wave generator bearing from coming off in the axis line direction. There is no need to dispose a retainer holding plate of the wave generator bearing inside the flexible externally-toothed gear, whereby the axial length of the hollow-type strain wave gearing unit can be reduced.

Abstract translation: 中空型应变波传动装置具有杯形的柔性外齿轮，波形发生器的中空旋转轴的一个轴端部分位于其中。 轴端部由安装在固定到柔性外齿轮的凸台的轴承座上的轴承支撑。 轴承座具有用于防止波浪发生器轴承的保持器沿轴线方向脱落的保持器保持部。 不需要将波浪发生器轴承的保持板固定在柔性外齿轮内，从而可以减小中空型应变波传动装置的轴向长度。