Bicycle's bottom bracket bearing lock has mechanical parts located in protected tubular frame, and lock engages in axis of bottom bracket bearing, with protected mechanical parts installed during manufacture before welding of frame

摘要

The bicycle's bottom bracket bearing lock has the mechanical parts of the lock located in the protected tubular frame (2), and the lock engages in the axis (4) of the bottom bracket bearing. The cylinder lock (1) is fitted in the tubular frame, and the protected mechanical parts are installed in the manufacturing process before the welding of the frame. The locking bolt (3) can be brought into open or locked positions by turning the key in the cylinder lock, and the conversion of the rotational movement of the cylinder into the longitudinal movement of the locking bolt by a rack and pinion pair (5a,5b).