Yu Yan,Toshinari Yamaoka,Fangjie Nie,Haishen Xu,Yangzi Liu
申请号：
US16447458
公开号：
US20190299795A1
申请日:
2019.06.20
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A self-propelled machine includes a drive motor, a handle having two grips, an electromechanical converting device, and a speed adjusting element configured to move relative to the handle to adjust a rotational speed of the drive motor and configured to be operated by a user when the user holds one of the two grips with a single hand. The speed adjusting element is disposed between the two grips. The electromechanical converting device is configured to convert a positional change of the speed adjusting element into an electrical signal for adjusting the rotational speed of the drive motor. The speed adjusting element is movable between a first position and a second position. The rotational speed of the drive motor when the speed adjusting element is in the first position is greater than the rotational speed of the drive motor when the speed adjusting element is in the second position.
