| 摘要 |
A motorcycle includes a motorcycle body, two extendable units, a speed sensor, and two auxiliary wheel stands. The speed sensor detects the speed of the motorcycle body. Each auxiliary wheel stand includes a stand body and an auxiliary wheel body. One end of the stand body is pivotally connected to the motorcycle body, and the auxiliary wheel body is disposed on the other end of the stand body. One end of each extendable unit is fixed to the motorcycle body, and the other end thereof is connected to the stand body. When the speed of the motorcycle body is slower than a threshold value, the extendable units elongate and push the stand bodies, thereby descending the auxiliary wheel bodies to the ground. |
