Adjustable bicycle dropout integrated with wheel skewer

摘要

An adjustable rear wheel dropout system includes an over center clamp, toggle clamp or four bar link mechanism to tension a bicycle's chain or belt drive system. A toggle clamp system moves the rear axle as needed to achieve the desired tension in the chain or belt. The over center toggle clamp system is also useful in facilitating the repeatable reinstallation of a rear wheel in a predetermined position. A wheel skewer system secures or locks the adjustable rear wheel dropout in the desired location. The dropout system includes a chain stay adjustment area or void to allow the wheel skewer to be inserted though the dropout. After the end position is secured by the toggle system, the wheel skewer further secures the dropout position as the wheel skewer is tightened to secure the wheel to the bicycle.

主权项

1. An adjustable bicycle dropout system, the system comprising:
a) a swing plate defining a swing void, a swing plate adjustment pin void, and a skewer void; b) a main plate defining a main plate swing void, a void for a swing plate adjustment pin, a link pivot pin void and a main plate skewer void and the main plate comprising a link stop, seat stay attachment point and a chain stay attachment point; c) a link defining a pair of distal voids and a pair of medial voids; d) a link pivot pin; e) a swing plate adjustment pin defining a void for a turn buckle screw and the swing plate adjustment pin further comprising a detent; f) a turn buckle screw; g) a right turn buckle screw nut defining a void comporting to the turn buckle screw and the right turn buckle screw nut further comprising a link adjusting pin and a pair of extension lever pins; and h) an extension lever comprising a first flexible leg and a second flexible leg, with each flexible leg defining a medial void configured to accept an extension lever pin of the right turn buckle screw nut.