Patent ID: 8281688
Filing Date: 2012-10-09
Classification: F16H,Y10T

Abstract:
1. A wave gear device comprising: a rigid internally toothed gear; a flexible externally toothed gear coaxially disposed inside the rigid internally toothed gear; a wave generator fitted inside of the flexible externally toothed gear; a rotating input shaft; a friction member disposed in between the wave generator and the rotating input shaft so as to be sandwiched from a radial direction or an axial direction thereof; and a fastening member for coaxially fastening the wave generator and the rotating input shaft in a state in which the friction member is sandwiched therebetween, the fastening member being threadably secured directly to the input shaft; and a washer disposed between the fastening member and the input shaft; wherein the wave generator and the rotating input shaft integrally rotate due to a frictional coupling force of the friction member, and generate slippage in the rotational direction therebetween when the transmission torque between the wave generator and the rotating input shaft reaches a predetermined value or higher.