To avoid the enlargement of a pulley unit (transmission), when the performance for absorbing the rotational fluctuation of, for example, both of a pulley (outer ring body) and a rotor shaft (inner ring body) due to a coil spring arranged between both of the ring bodies should be improved.
In the transmission, pulley side annular disks 10, 10 which integrally rotate together with a pulley 2 and a rotor side annular disk 11 which integrally rotates together with the rotor shaft 3 are arranged in the space where the pulley (outer ring body) 2 faces the rotor shaft (inner ring body) 3 so as to be close in the axial direction. The rotor side annular disk 11 is provided with a plurality of spring receiving windows (spring receiving portions) 11a to 11d. The respective spring receiving windows 11a to 11d receive coil springs 12a to 12d. The pulley side annular disks 10, 10 are provided with a plurality of spring engaging windows (spring engaging portions) 10a to 10d which can engage with the respective coil springs 12a to 12d.
| JPH0575544 | [Name of invention] Rotational fluctuation absorption pulley |
| WO/2015/010190 | ISOLATOR WITH IMPROVED DAMPING STRUCTURE |
| JP2002357263 | PULLEY UNIT |
WATANABE HAJIME
FUJIWARA HIDEKI
