Portable four-link folding up- and down-pedaling bicycle
A four-link, pedal-type technology, applied in foldable bicycles, bicycles, motor vehicles, etc., can solve problems such as small satisfactory results, and achieve the effect of simplifying the driving mechanism and reducing costs
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[0014] according to figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , The four-link folding up and down pedaling portable bicycle includes six-link folding beam 1, front head tube 2, rear inclined tube 31, seat tube 32, saddle 33, positioning card 34, front fork assembly 4, rear Frame 5, V-shaped folding handle 6, front wheel 7, rear wheel 8 and driving mechanism 9;
[0015] The four-link folding beam 1 includes a folding seat 11, a front beam tube 12, a rear beam tube 13, a rotating blade 14, a trough-shaped folding piece 15, a thick-walled round tube 16, a beam lock hook 17 and a connecting rod 18. The folding seat 11 is a groove-shaped punch with an opening facing backwards. The upper and lower sides of the groove on both sides of the front folding seat 11 each have a pair of perforations. The front folding seat 11 is welded to the front tube 2 On the rear side of the lower part, the front beam tube 12 is a rectangular tube, and the front end of the front be...
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