| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily replace a spring without lifting a body by arranging the spring of a suspension in such a way as to energize a wheel from the obliquely upper side. SOLUTION: A coil spring 30 of a driven wheel unit 10 energizes a wheel 22 from the obliquely upper side but is fatigued with use, so that it is necessary to replace the spring. In this case, a bracket 12 is rotated using a bearing 18 so that a spring presser 34 faces the outside of the side face of a body. In this state, a fitting screw of the spring presser 34 is removed to detach the coil spring 30 for repalcement, and the spring presser 34 is mounted again on an including plate 32 by a screw or the like to complete spring replacement. Spring replacement is therefore extremely easy. Since the spring 30 comes in contact not with the bracket 12 but with an axle 26, the coil spring 30 can be lengthened.</p> |
