Sprung bicycle frame has deflection lever rotatably fastened on upper tube, swinging upwards to direct movement from rear wheel through spring strut to rear region of frame, to connection of upper tube and saddle tube

摘要

The sprung bicycle frame has a deflection lever (3) rotatably fastened on an upper tube (12) and which swings upwards and directs movement from the rear wheel through a spring strut (10) to the rear region of the frame, to the connection of the upper tube and saddle tube. The rear arm (5) of the deflection lever should be at an angle of preferably 15-20 degrees to the horizontal. A pivot point (16) between the rear swinging arm (6) and main frame (2) is located with a radius of preferably 75 mm around the middle point of the bottom bracket bearing (9).