公开(公告)号：US11441650B2

公开(公告)日：2022-09-13

申请号：US17076194

申请日：2020-10-21

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Jun Handa ,  Hiroaki Kimura ,  Sotaro Miyake

IPC: F16H1/32 ,  F16H35/10 ,  F16H49/00

Abstract: In a rotation transmission mechanism that transmits the rotational driving force of a motor to a load-side member via a speed reducer, a strain wave gearing is used as the speed reducer, and the allowable load torque of members in the powertrain other than the strain wave gearing is greater than a predetermined upper-limit load torque. The allowable load torque of the strain wave gearing is dictated by the ratcheting torque, which is set so as not to exceed the upper-limit load torque. In an overload state, ratcheting is generated in the strain wave gearing, so that the strain wave gearing functions as a mechanical fuse. Other power transmission members can be protected from an overload state without adding a separate member such as a torque limiter.

公开(公告)号：US10907716B2

公开(公告)日：2021-02-02

申请号：US15753600

申请日：2015-09-17

Applicant: Harmonic Drive Systems Inc.

Inventor： Jun Handa ,  Sotaro Miyake ,  Hiroaki Kimura ,  Hideo Yasue

IPC: F16H1/32 ,  F16H49/00 ,  F16H1/00

Abstract: A wave generator for a strain wave gearing makes a flexible externally toothed gear to flex into an elliptical shape and mesh with rigid internally toothed gears, and makes meshing positions of the flexible externally toothed gear with the both gears to move in a circumferential direction. On the inner side of a rigid plug of the wave generator, a plug support ring is secured and integrated. The rigid plug is formed from an iron-based material, and the plug support ring is formed from a high-rigidity material that is more rigid than the iron-based material. Since deformation of the rigid plug is suppressed, the wave generator provided with a large hollow part can be obtained.

公开(公告)号：US09989141B2

公开(公告)日：2018-06-05

申请号：US14901237

申请日：2013-07-04

Applicant: Harmonic Drive Systems Inc.

Inventor： Sotaro Miyake ,  Yoshihide Kiyosawa

IPC: F16H35/00 ,  F16H49/00

CPC classification number: F16H49/001 ,  F16H2049/003

Abstract: A press plate is tacked to a boss of a cup-shaped flexible externally toothed gear of a wave gear device unit. A second arm as a driven member is attached by a fastening bolt to an end surface on an outer side of an output flange of the wave gear device unit. The fastening bolt is screwed into and secured in a tap hole of the press plate from each bolt insertion hole of the second arm, via a flange-side bolt insertion hole and a boss-side bolt insertion hole. A fastening structure can be achieved in which a driven member is fastened to a wave gear device unit in which holes are easily machined into the output flange, and only a few fastening bolts are needed to fasten the boss, the output flange, and the driven member.

公开(公告)号：US11028915B2

公开(公告)日：2021-06-08

申请号：US15781751

申请日：2015-12-11

Applicant: HARMONIC DRIVE SYSTEMS INC.

Inventor： Jun Handa ,  Hiroaki Kimura ,  Sotaro Miyake

IPC: F16H1/32 ,  F16H49/00 ,  F16H57/021

Abstract: A restraint mechanism for limiting the movement of the flexible external gear of a flat strain wave gearing in the axial direction has a first restraining member installed in a floating state in a first recess and a second restraining member installed in a floating state in a second recess. The restraining member is able to limit the movement of the flexible external gear in the axial direction to a range in which there are no difficulties during actual use. Moreover, compared with when movement of the flexible external gear is limited using members that are disposed at fixed positions, it is possible to reduce the sliding abrasion that occurs between the flexible external gear and the first and second restraining members.

公开(公告)号：US11002349B2

公开(公告)日：2021-05-11

申请号：US15738172

申请日：2015-07-07

Applicant: Harmonic Drive Systems Inc.

Inventor： Jun Handa ,  Hiroaki Kimura ,  Sotaro Miyake

IPC: F16H1/32 ,  F16H35/10 ,  F16H49/00

Abstract: In a rotation transmission mechanism that transmits the rotational driving force of a motor to a load-side member via a speed reducer, a strain wave gearing is used as the speed reducer, and the allowable load torque of members in the powertrain other than the strain wave gearing is greater than a predetermined upper-limit load torque. The allowable load torque of the strain wave gearing is dictated by the ratcheting torque, which is set so as not to exceed the upper-limit load torque. In an overload state, ratcheting is generated in the strain wave gearing, so that the strain wave gearing functions as a mechanical fuse. Other power transmission members can be protected from an overload state without adding a separate member such as a torque limiter.