Abstract: An actuator includes an output member having an output shaft (9) rotated about a rotation axis (Ar) thereof, a stationary crown gear (5) disposed at an input side of the output member and having a plurality of teeth disposed about the rotation axis in parallel, a wobbling crown gear (6) having a different number of teeth from stationary crown gear (5) about a central axis (Ac) and meshed with the stationary crown gear (5), a plurality of drivers (4) disposed at an input side of the wobbling crown gear (6) about the rotation axis in parallel in a circumferential direction and configured to displace a portion of the wobbling crown gear (6) corresponding thereto in the axial direction, and a stopper (5s) configured to come in contact with a portion of the wobbling crown gear (6) to restrict inclination of the wobbling crown gear (6) and configured to restrict a meshing depth of the stationary crown gear (5) and the wobbling crown gear (6).

Abstract: An actuator includes an output member having an output shaft (9) rotated about a rotation axis (Ar) thereof, a stationary crown gear (5) disposed at an input side of the output member and having a plurality of teeth disposed about the rotation axis in parallel, a wobbling crown gear (6) having a different number of teeth from stationary crown gear (5) about a central axis (Ac) and meshed with the stationary crown gear (5), a plurality of drivers (4) disposed at an input side of the wobbling crown gear (6) about the rotation axis in parallel in a circumferential direction and configured to displace a portion of the wobbling crown gear (6) corresponding thereto in the axial direction, and a stopper (5s) configured to come in contact with a portion of the wobbling crown gear (6) to restrict inclination of the wobbling crown gear (6) and configured to restrict a meshing depth of the stationary crown gear (5) and the wobbling crown gear (6).

Abstract: The planetary roller reducer, which is directly coupled to a motor, is provided with a casing (6), an input shaft (3) accommodated inside the casing and directly coupled to an output shaft (2) of the motor (1), an input shaft bearing (20) set between the casing and the input shaft to support the input shaft so as to rotate with respect to the casing, a sun shaft (4) installed on the input shaft, a carrier (8) accommodated in the casing, a plurality of planetary rollers (13) supported on the carrier so as to rotate and in external contact with the sun shaft, an elastic ring (5) accommodated in the casing and in internal contact with a plurality of the planetary rollers, and a first elastic member (25a) installed between the input shaft bearing and the input shaft to elastically support the input shaft.

Abstract: The planetary roller reducer, which is directly coupled to a motor, is provided with a casing (6), an input shaft (3) accommodated inside the casing and directly coupled to an output shaft (2) of the motor (1), an input shaft bearing (20) set between the casing and the input shaft to support the input shaft so as to rotate with respect to the casing, a sun shaft (4) installed on the input shaft, a carrier (8) accommodated in the casing, a plurality of planetary rollers (13) supported on the carrier so as to rotate and in external contact with the sun shaft, an elastic ring (5) accommodated in the casing and in internal contact with a plurality of the planetary rollers, and a first elastic member (25a) installed between the input shaft bearing and the input shaft to elastically support the input shaft.