Bicycle rear wheel spring suspension - has bearing shell secured on seat tube and coupled to lower frame tube via stiffening strut.

摘要

The bearing shell (4), which is secured to the seat tube and coupled to the lower frame tube by stiffening struts, contains a torsion spring (6). The rear wheel fork ends, distal w.r.t the wheel, are secured to both sides of the torsion spring inner part. Pref. the bearing shell is fixed to any arbitrary point on the seat tube between the pedal bearing and the top frame tube. The spacing between the centre point of the bearing shell and that of the pedal bearing is typically max. 220 mm. USE/ADVANTAGE - Simple, low-cost, and efficient spring suspension for rear wheel of bicycle.