SPEED REDUCTION AND SPEED INCREASE SELF-OPERATED CONTROL MECHANISM TYPE-FULLY AUTOMATIC CONTINUOUSLY VARIABLE TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To form a simple structure to continuously variably change the gear ratio by adding a mechanism to mechanically control a torque change on the input-output side by itself, and automatically controlling variable actuation by itself by a speed reduction-speed increase mechanism by self-operated driving of a sun gear. ;SOLUTION: A difference between rotating speed of respective rotation areas of an output side planetary gear support frame 10 and rotating speed of a rotation input member 2 is obtained by input of the rotation input member 2, and rotating speed of a control planetary gear 14 and rotating speed in the center of a chassis fixing shaft 1 are changed, and rotation of these is controlled by a control ring gear 17, and a sun gear 7 is variably driven through a speed change planetary gear 4 and a sun gear driving gear 5. In the initial stage of input and at output side load large time, the speed reducing action is obtained, and at load reducing time, the speed increasing action is obtained. Variable driving control of torque allocation on the input-output side is performed, and a speed reduction mechanism is obtained to drive so as to reduce speed of the sun gear 7 up to the same speed rotation area becoming 1 to 1 of the input side rotation input member 2 and an output side planetary gear support frame 10, and a speed increasing mechanism is obtained by reverse rotation driving of the sun gear 7 in an output side speed increasing rotation area from 1 to 1. Therefore, automatic continuously variable speed change is obtained.;COPYRIGHT: (C)1998,JPO