| 摘要 |
<p>The assemblies (2,4) which make up the vehicle are joined together by mechanical couplings which allow them to be separated so that a number of vehicles can be stacked in a reduced space and assembled without the use of tools. Each assembly includes a tubular member (3,5) which is bent symmetrically about the lengthwise axis of the vehicle, and each tubular member has two cross-pieces (7-10) which engage when the assemblies are fitted together. The cross-pieces (9,10) on the lower assembly have a flat and inverted L-shaped cross-section respectively, while those (7,8) on the upper assembly have a cross-sectional hook-shape and spring clip with lugs for releasing it.</p> |
