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1. (WO2017153978) GEARBOX WITH LIMIT MECHANISM

Pub. No.:    WO/2017/153978    International Application No.:    PCT/IL2017/050263
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 02 00:59:59 CET 2017
IPC: F16H 1/32
F16H 49/00
Applicants: GREENSHPON ENGINEERING WORKS LTD.
Inventors: SEADIA, Shimon
Title: GEARBOX WITH LIMIT MECHANISM
Abstract:
A gearbox that is configured to transmit torque from a motor shaft to a load shaft includes a limit mechanism. The limit mechanism includes a strain wave gear including a circular spline, a flex spline and a wave generator. The circular spline is fixed to a housing of the gearbox coaxially with the load shaft, the flex spline is formed on a flexible rim of a rotatable cup that is coaxial with the load shaft, and the wave generator is coupled to the load shaft so as to rotate at the same angular velocity. The limit mechanism further includes at least one limiter structure coupled to the rotatable cup and at least one fixed switch, and is configured to stop rotation of the load shaft when the limiter structure engages the fixed switch.