Patent ID: 9322395
Filing Date: 2016-04-26
CPC Classification: F03D,F05B,F16D,H02K,Y02E

Claim Text:
1. A power generating device comprising: speed up gears including a main shaft that rotates by external force, a rotation transmission mechanism that receives rotation of the main shaft to increase speed of the rotation of the main shaft, and a roller bearing that rotatably supports an output shaft that outputs running torque of the rotation transmission mechanism; a generator including a drive shaft which is rotated by receiving rotation of the output shaft and configured to generate electricity in connection with rotation of a rotor which rotates together with the drive shaft; an input rotor provided to the output shaft to be capable of rotating together with the output shaft; an output rotor provided to the drive shaft to be capable of rotating together with the drive shaft and concentrically arranged on a radial inside or a radial outside of the input rotor; and a one-way clutch disposed between the input rotor and the output rotor, the one-way clutch being configured to connect the input rotor with the output rotor to rotate together with the input rotor and the output rotor when a rotation speed of the input rotor exceeds a rotation speed of the output rotor and the one-way clutch being configured to release a connection between the input rotor and the output rotor when the rotation speed of the input rotor falls below the rotation speed of the output rotor, wherein the one-way clutch is provided with a torque limiter configured to release the connection between the input rotor and the output rotor when transmission torque from the input rotor to the output rotor exceeds an upper limit and wherein the power generating device includes a rolling bearing adjacently arranged on an axial side of the one-way clutch wherein the one-way clutch includes an inner peripheral surface of an outer ring provided to one of the input rotor and the output rotor, an outer peripheral surface of an inner ring provided to another of the input rotor and the output rotor and configured to form plural wedge-shaped spaces in a circumferential direction with the inner peripheral surface of the outer ring, and a roller arranged in each of the plural wedge-shaped spaces, wherein the one-way clutch is configured to connect the input rotor with the output rotor to rotate together with the input rotor and the output rotor by engaging the roller with the outer peripheral surface of the inner ring and the inner peripheral surface of the outer ring, wherein the one-way clutch is configured to release the connection between the input rotor and the output rotor by disengaging engagement of the roller with the outer peripheral surface of the inner ring and the inner peripheral surface of the outer ring, wherein the torque limiter is provided with an accommodating recess that is formed in the outer peripheral surface of the inner ring, and that accommodates the roller separated from the wedge-shaped space, when the transmission torque exceeds the upper limit, to disengage the engagement of the roller with the outer peripheral surface of the inner ring and the inner peripheral surface of the outer ring, wherein the outer peripheral surface of the inner ring is provided in the input rotor, and wherein the torque limiter is provided with a separation prevention device that prevents the roller in the accommodating recess from being separated from the accommodating recess by centrifugal force due to rotation of the input rotor.