| 摘要 |
A collapsible trolley in which a main frame, consisting of two parallel side rails A, is spanned by two separate fabric top covers (J1, J2 figure 19) which are 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 (K1) is located between the fabric covers, said pocket allowing balanced loading of heavy items. Beaded edges of the pocket and fabric top covers are inserted into grooves in the side rails to secure them in place (figure 17). A four- legged, triangulated, support structure secures the wheel to the parallel side rails such that it transfers further tension into the two piece 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, meaning that the trolley can also be used as a camp bed when the wheel is removed. The trolley may also be usable as a seat, and the frame of said trolley can be dismantled and folded up for transport. |
