| 摘要 |
<p>Torsion spring drive for toys, with a spring (2) of rubber or similar elastomeric material, wherein the spring (2) is a massive body whose largest inscribable cylinder has a ratio between the diameter and the length of between 0.2 and 2. The spring (2) has a circular cross-section along most of its length, and may in particular be hour-glass shaped. The drive is particularly used with a transmission (4, 7, 9, 10) for translating the relatively small angular travel of the spring into a number of rotations or into a linear movement. There is shown a gear wheel drive (4, 7, 9, 10), a rack-and-pinion drive and a lever drive. For regulating the runoff speed there is used a flywheel or a speed regulator. There are shown various toy models, amongst others a toy boat with a liquid exhauster drive.</p> |
