ROCKING INNER GEARING TYPE SPEED REDUCER AND GEARED MOTOR, AND THEIR MANUFACTURING METHODS

摘要

PROBLEM TO BE SOLVED: To provide a rocking inner gearing type speed reducer having a heated portion efficiently cooled and a high degree of freedom in installation, and to provide a geared motor and their manufacturing methods.

SOLUTION: The rocking inner gearing type speed reducer 120 comprises an internal gear, and an external gear 140 having a tooth number slightly different from that of the internal gear. The reducer outputs a relative rotation component between the internal gear and the external gear 140. A cooling medium conduction hole 123 as a passage for cooling medium is formed outside internal teeth 136 of the internal gear in the radial direction where a portion of a casing 122 stores the internal gear and the external gear 140.

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