Patent ID: 7341268
Filing Date: 2008-03-11
Classification: B62K

Abstract:
1. A foldable bicycle, comprising a front frame, a rear frame, two seat plates, a middle frame, wherein: the front frame includes a head tube, a front wheel bracket mounted on a lower end of the head tube, a lower mounting seat pivotally mounted on the lower end of the head tube, an upper mounting seat mounted on an upper end of the head tube, and a link having a first end pivotally mounted on the upper mounting seat; the rear frame includes two chain stays parallel with each other, a linkage pivotally mounted between the two chain stays, a pivot plate mounted between the two chain stays, a shock-absorbing member having a first end pivotally mounted on a first end of the linkage and a second end pivotally mounted on the pivot plate, and an upward extended curved section mounted between front ends of the two chain stays; the two seat plates are mounted between the front frame and the rear frame and parallel with each other, and a straddle portion is mounted between the two seat plates; each of the two seat plates has a mediate portion formed with an arc-shaped slot, and a quick release clamp is mounted between the arc-shaped slots of the two seat plates; the link of the front frame has a second end pivotally mounted between front ends of the two seat plates, and the curved section of the rear frame is pivotally mounted between rear ends of the two seat plates; the middle frame includes an oblique seat tube extended through the straddle portion between the two seat plates and having a lower end mounted on the lower mounting seat of the front frame, a pivot seat mounted on an upper end of the seat tube, and a support member having a first end pivotally mounted on the pivot seat and a second end pivotally mounted on a second end of the linkage.