| 摘要 |
A collapsible trolley in which a main frame, consisting of two parallel side rails A, is spanned by a fabric top cover (J, figure 6) which is held in tension by hinged cross brace spreaders E providing it with structural rigidity. A single, centrally located, large diameter wheel B is provided. An under-slung carry pocket K may be attached to the underside of the fabric cover, said pocket allowing balanced loading of heavy items. A four- legged, triangulated, support structure may secure the wheel to the parallel side rails such that it transfers further tension into the fabric top cover of the trolley making it more rigid the heavier it is loaded. The four support legs D may be hinge mounted to the parallel side rails such that they can be folded away under the device and secured to the underside of the fabric top cover, meaning that the trolley can also be used as a camp bed when the wheel is removed. The fabric top cover and integral under-slung carry pocket section can also be removable allowing a range of alternative fabric pocket inserts, such as a seat, to be installed. The trolley frame can be dismantled and folded up for transport. |
