| 摘要 |
PURPOSE:To prevent vibration of a wheel cassette by providing a fitting element which is fitted to the interior of a guide hole of a connection arm made on a wheel cassette at a position opposed to a wheel cassette of a rotational shaft, and also installing a sliding means which slides the rotational shaft to a direction of axial core through fitting to the rotational shaft, on a carrier. CONSTITUTION:A rotational shaft 3 is allowed to slide to a type wheel 11 carried by a wheel cassette 16 together with a fitting element 6 and a connection arm 5, thereby the fitting element 6 is allowed to fit to the interior of a guide hole 19 on the wheel cassette 16. This results in the insertion of the rotational shaft 3 into a shaft hole 14 of the type wheel 11 and a connecting pin 4 of the connection arm 5 into a connection hole 15 respectively. The type wheel 11 is mounted on the rotational shaft 3 so that the former may rotate with the latter in a condition in which the type wheel 11 is carried by the wheel cassette 16. Thus the vibration of the wheel cassette 16 caused by the rotation of the type wheel is prevented. |
