| 摘要 |
A first drive element of a speed changer is rotatably supported in front of and coaxial with a stationary support, and a second drive element is rotatably supported by and coaxial with the stationary support. An intermediate disc is eccentrically mounted on the first drive element for transmitting rotary motion between the first and second drive elements; guiding and locking devices are connected with the support for locking the intermediate disc against rotation and for mounting it for movement in a closed circular path corresponding to the eccentric mounting of the intermediate disc; an inner gear is rigidly mounted on and coaxial with the intermediate disc and has external teeth; and an outer gear is rigidly mounted on and coaxial with the second drive element, surrounding the inner gear and having internal teeth in greater number than the external ones, for consecutive meshing engagements between the internal and external teeth.
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