초록 ▼

A cord lock is provided for securing or locking a flexible cord or the like. The cord lock has but three pieces, a molded plastic cylinder and a molded plastic piston, and a biasing spring trapped therebetween. Snap-over cammed retaining means are provided for holding the piston and cylinder in asse

A cord lock is provided for securing or locking a flexible cord or the like. The cord lock has but three pieces, a molded plastic cylinder and a molded plastic piston, and a biasing spring trapped therebetween. Snap-over cammed retaining means are provided for holding the piston and cylinder in assembled relation against the biasing force of the spring. Confronting flats are provided on the outer surface of the piston and inner surfaces of the cylinder to maintain rotational alignment so that a pair of lateral apertures in the cylinder can be aligned with a cross-bore in the piston for movement of a cord or the like therethrough.

대표청구항 ▼

A cord lock having only three parts comprising an integrally molded one-piece cylinder of a resilient material having an open end and an integral closed end, said cylinder having a pair of aligned lateral apertures therein for receipt of a cord or the like, a piston axially movable in said cylinder

A cord lock having only three parts comprising an integrally molded one-piece cylinder of a resilient material having an open end and an integral closed end, said cylinder having a pair of aligned lateral apertures therein for receipt of a cord or the like, a piston axially movable in said cylinder and having a cross bore therein alignable with said apertures, said cylinder and said piston each having two diametrically spaced chordal flats for relative rotational alignment, wherein said lateral apertures and said piston cross bore extend through respective flats, a pair of lead-in lramps formed inwardly of said cylinder\s open end on said cylinder\s two diametrically spaced flats, a pair of teeth formed on said piston\s two diametrically spaced flats adjacent the entering end of said piston, each of said teeth extending outwardly of said respective chordal flats and having a shallow slope on its lower outer portion and an upper shoulder facing away from said entering end, and a spring acting between said cylinder and said piston resiliently tending to move said piston out of said cylinder and to misalign said bore and said apertures to thereby clamp a cord between said cylinder and said piston, wherein said pair of teeth rides in said lead-in ramps as said piston is assembled into said cylinder by being moved axially towards said closed end of said cylinder to cam over said lead-in ramp and said shoulders of said pair of teeth snap into the respective pair of aligned lateral apertures to maintain said cylinder and said piston in assembled relation.