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：US20180156313A1

公开(公告)日：2018-06-07

申请号：US15572664

申请日：2015-05-29

Applicant: Harmonic Drive Systems Inc.

Inventor： Norio SHIROKOSHI ,  Yasushi ONO

IPC: F16H1/28

Abstract: In a planetary gear device series composed of eight kinds of planetary gear devices with gear reduction ratios of 3 to 10, the planetary gear device of each gear reduction ratio uses an internal gear with 108 teeth or a slightly different number of teeth, and the module is common among the planetary gear devices of all gear reduction ratios. The combinations of the sun gear teeth number Za and the internal gear teeth number Zc in the planetary gear device of each reduction ratio are given in Table 1 of this application.