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Title:
OUTER TOOTH GEAR, WAVE MOTION REDUCTION GEAR AND ROBOT
Document Type and Number:
Japanese Patent JP2023013371
Kind Code:
A
Abstract:
To provide a technology which can reduce a load applied on a strain gauge while accurately detecting torque applied on an outer tooth gear.SOLUTION: An outer tooth gear 20 has a flank part 21, a plurality of outer teeth, a diaphragm part 232, and a strain gauge 42. The flank part 21 extends in an axial direction which is parallel with a center axis. The plurality of outer teeth are arranged at one side of the flank part 21 in the axial direction. The outer teeth extend to the outside of a radial direction. The diaphragm part 232 expands in a direction intersecting with the axial direction at the other side of the flank part 21 in the axial direction. The strain gauge 42 is arranged at least at either of a face of the diaphragm part 232 at one side in the axial direction, and a face at the other side in the axial direction. The strain gauge 42 is arranged in only a region which is smaller than a half of a radial length from one end of the diaphragm part 232 in the radial direction up to the other end in the radial direction with a radial meddle point Rm between one end of the diaphragm part 232 in the radial direction at a cross section passing the center axis, and the other end in the radial direction as a center.SELECTED DRAWING: Figure 5

Inventors:
TAKAGI DAISUKE
Application Number:
JP2021117510A
Publication Date:
January 26, 2023
Filing Date:
July 16, 2021
Export Citation:
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Assignee:
NIDEC SHIMPO CORP
International Classes:
F16H1/32; B25J17/00; G01L3/14
Attorney, Agent or Firm:
Takami Nishida



 
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