Paradox planetary gear reduction gear mechanism, the planetary gear set, and as well as the rotation bearing device

摘要

By using gears to transmit force by meshing the teeth rather than a friction transfer, backlash is extremely small, to suppress the rattling noise, and has a weight of greater load capacity in the thrust direction, the rotation transmission of high torque I offer possible, the gear mechanism. And a gear mechanism of spur gears has a plurality arranged in mesh with each other. Are arranged threaded gears 2, 4 are engaged with each other coaxially with the spur gear 1 and 3. Threaded gears 2, 4 adjacent is formed into a screw shape having a lead angle equal to the angle and in opposite directions. I will transmit the rotation to the screw-shaped gear 3 and 4 spur gear adjacent screw-shaped gear 2 and the spur gear 1 is rotated integrally.