| 摘要 |
A foldable trailer includes a base frame, a canopy frame having a pivot end pivotally connected to a front end of the base frame, a power end rearwardly and upwardly opposite to the pivot end portion, and a weight portion interposed between the power and pivot ends and having a weight area. A biasing member includes a pivoted end pivotally mounted to the base frame, and a connected end connected to the weight area, and is compressible towards the base frame when the weight area is turned by a weight force that is generated by applying a power force to depress the power end downwards. The weight area is located such that a force component imparted by the weight force is greater than, equal to, and smaller than a biasing force of the biasing member when the power end is in an unfolded position, a critical position, and a folded position, respectively.
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