| 摘要 |
<p>A combination of the bicycle saddle vertical tube, seat tube and rear fork, which includes a seat tube (10), a vertical tube, a saddle fixing mechanism (30), a saddle (40), a first assisting wheel (50), a first clamp (60), a second clamp (70) and a rear fork (80). At least one limiting groove (11) is provided in the seat tube (10). The vertical tube includes a middle tube (21) and a seat post (22). The saddle fixing mechanism (30) is arranged on the top of the seat post (22). The saddle (40) is fixed on the saddle fixing mechanism (30). The first assisting wheel (50) is set at the bottom of the middle tube (21). The first clamp (60) is set at the top of the seat tube (10). A limiting block (61) is arranged on the first clamp (60) and is located in the limiting groove (11) of the seat tube (10). The second clamp (70) is set on the top of the middle tube (21), and therefore when the middle tube (21) is rotated, the first clamp (60) can be retained at a fixed position because the limiting block (61) of the first clamp (60) is located in the limiting groove (11) of the seat tube (10), thus can avoid the problem of free rotating.</p> |
