SPEED REDUCTION MECHANISM AND MOTOR WITH SPEED REDUCTION MECHANISM

摘要

PROBLEM TO BE SOLVED: To provide an effective speed reduction mechanism.SOLUTION: A pressure angle of a worm 8 at a contact point is set to be larger than a pressure angle of a worm wheel 12 at the contact point, and the pressure angle of the worm at the contact point and the pressure angle of the worm wheel at the contact point are set so that a center C1 in a region from a start of meshing E1 to an end of meshing D1 is positioned nearer to the end of meshing D1 than an output shaft center 0.