CROWN GEAR DECELERATION APPARATUS

摘要

Bending flexibility for precession is added to a movable crown gear to increase torsional rigidity and allowable torque during transmission of rotation about a shaft. The crown gear deceleration apparatus comprises: a fixed crown gear (2); a movable crown gear (1); a pressing unit which presses the movable crown gear (1); and an output shaft (3) connected to the movable crown gear (1). The movable crown gear (1) conducts precession according to rotation of the pressing unit. In the output shaft (3), a coupling shaft portion (30) connected to the movable crown gear (1), an elastic shaft portion (31) which transforms elastically according to the precession of the movable crown gear (1) and an output shaft portion (32) are continuously disposed along an axial direction (a).