Patent ID: 9501025
Filing Date: 2016-11-22
CPC Classification: F16H,G03G,Y10T

Claim Text:
1. A power transmission device, comprising: a first frame; a drive motor including a first rotary shaft, attached to a first side of the first frame, the first rotary shaft including external teeth; a first driven gear near the first rotary shaft, the first driven gear including an annular concave portion having internal teeth on an inner circumferential surface of the annular concave portion, the first driven gear being configured to transmit a first drive torque from the drive motor to a first driven rotary body having a second rotary shaft; and a second driven gear near the first rotary shaft, the second driven gear including external teeth on an outer circumferential surface of the second driven gear, the second driven gear being configured to transmit a second drive torque from the drive motor to a second driven rotary body having a third rotary shaft, wherein the first driven gear is configured to be mounted on the second rotary shaft of the first driven rotary body as a single integrated member in a state in which the annular concave portion faces a second side of the first frame opposite the first side, and the external teeth of the first rotary shaft of the drive motor is configured to be directly connected to the internal teeth of the annular concave portion.