| 摘要 |
PROBLEM TO BE SOLVED: To provide a reduction device which can obtain an intermediate reduction gear ratio of about 10-50 with large rigidity, and can be designed in an outside diametrical dimension of an outer ring. SOLUTION: An input shaft 1 having a cylindrical inner diameter surface eccentric in a cylinder 1a, an output shaft 2 forming a plurality of cam crests 2a at equal pitches on an outer diameter surface, and an intermediate shaft 5 having an annular retainer 5a having a pocket 4 for holding a plurality of rollers 3 are coaxially arranged. The pocket 4 is arranged in a position of a divided point different by one from the number of cam crests 2a in the number of divided points of equally dividing the retainer 5a in the circumferential direction. The rollers 3 held in the respective pockets 4 rollingly contact with the eccentric cylindrical inner diameter surface of the cylinder 1a and the cam crests 2a of the outer diameter surface of the output shaft 2. A shape equivalent to one pitch of the cam crests 2a is formed in a shape of circumscribing the rollers 3 held in the pockets 4 when the output shaft 2 rotates by one pitch of the cam crests 2a by rotating the input shaft 1. COPYRIGHT: (C)2010,JPO&INPIT
|
