JP2008286409A5 - - Google Patents

Claims (3)

An outer case having inner teeth formed on the inner periphery, and a plurality of outer cases that are housed in the outer case, have outer teeth that mesh with the inner teeth and have slightly fewer teeth than the inner teeth, and are arranged in parallel in the axial direction. and pinion, central portion medium is inserted into the pinion, a crank shaft for eccentrically rotating the pinion by rotating, is inserted into the outer casing, and a carrier rotatably supporting the both end portions of the crank shaft, drive kinematic decelerates the rotation of the output shaft of the motor and a front reduction gear for transmitting the crankshaft, the carrier, a base portion, extends axially from the base portion, the circumferential direction through said pinion An eccentric oscillating speed reducer having a column part separated from the column part and an end plate part fastened to the column part,
The transmission gear that transmits the reduced speed is fixed to the base that protrudes from the outer case, and the diameter of the base that protrudes from the outer case is larger than the circle in contact with the radially inner ends of all the pillars. An eccentric oscillating speed reducer characterized by having a diameter.   The eccentric oscillating speed reducer according to claim 1, wherein a diameter of the base portion protruding from the outer case is smaller than a diameter in contact with a radially outer end of all the column portions.   3. The eccentric oscillating speed reducer according to claim 1, wherein the base portion protruding from the outer case is integrally formed with the base portion inserted into the outer case.