| 摘要 |
PROBLEM TO BE SOLVED: To extremely simplify the assembly work of a bearing as well as to simplify the structure of the supporting part of the bearing. SOLUTION: Inner wheels 30a, 32a are fitted to an output shaft 20 while the inside of the inner wheels 30a, 32a of third and fourth bearings 30, 32 are bumped against the stepped parts 20, 20b of the output shaft 20 from an axial direction. Fitting holes 44, 46 by which the outer wheels 30b, 32b of the third and fourth bearings 30, 32 are axially movably supported with the output shaft 20, are formed in the thick inner side parts of a housing 22, and one fitting hole 44 is formed to have such an aperture that the output shaft 20 equipped with a cam follower 16 can be inserted in the housing 22. Screw holes 44a, 46a having larger diameters than the fitting holes 44, 46 are formed to thick outer side parts. The outside of the outer wheels 30b, 32b of the third and fourth bearings 30, 32 are locked by first and second output flanges 48, 50 screwed in the screw holes 44a, 46a. |
