Lockable ring binder mechanism

摘要

A ring binder locking mechanism has a pair of toggle blades abutting edge to edge with one another within an elongate spring housing. A booster trigger is mounted at each end of the housing for locking the blades and their half rings in a closed position. The trigger is of one-piece metal construction and includes a pair of locking arms engagable with the blades to lock them with the half rings closed.