Bicycle circle lock body

Abstract

This item is the main body of a bicycle circle lock, excluding the key that is inserted into the keyhole, that attaches to the frame above the rear wheel of a bicycle. It comprises a horseshoe-shaped casing whose bottom is released when unlocked, a C-shaped arm housed within the casing and capable of moving back and forth, a guide lever fixed to the C-shaped arm to guide its movement, a pillar-shaped keyhole protruding from the lower left front of the casing, bent angles fixed to the inside left and right sides of the back of the casing, and frame bands inserted into the spaces below the left and right bent angles in the center. By inserting a key that fits the keyhole of this item into the keyhole, the C-shaped arm retracts to the front left side and is housed within the horseshoe-shaped casing, entering the unlocked state. To attach this item to a bicycle, the frame bands on the back are wrapped around the left and right bicycle frames and tightened.

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