公开(公告)号：US20170338718A1

公开(公告)日：2017-11-23

申请号：US15484357

申请日：2017-04-11

Applicant: Harmonic Drive Systems Inc.

Inventor： Tomoki TERASHIMA ,  Kiyoto KOBAYASHI ,  Sachio OSHIMA

IPC: H02K7/116 ,  F16H49/00 ,  F16H57/04 ,  H02K9/00

CPC classification number: H02K7/116 ,  F16H49/001 ,  F16H57/0415 ,  F16H57/0417 ,  F16H57/0419 ,  F16H57/0476 ,  H02K5/08 ,  H02K5/20 ,  H02K9/00 ,  H02K9/10 ,  H02K9/19 ,  H02K9/22

Abstract: A strain wave gearing with a built-in motor is provided with a motor, a wave gear mechanism enclosing the motor coaxially, and a heat-insulation spacing formed therebetween. The wave gear mechanism has a wave generator attached to the motor rotor so as to rotate integrally with the motor rotor. A wave generator plug of the wave generator is fixed to a rotor magnet back yoke of the motor rotor so as to enclose the rotor magnet back yoke. The spacing is formed in a contact surface portion between the rotor magnet back yoke and the wave generator back yoke, whereby heat transfer from the motor to the wave gear mechanism is suppressed.