FIELD: helical tension springs made of wire.
SUBSTANCE: ends of the springs are deformed to create spring fastening end elements, the springs can be used in the manufacture of door springs. The spring contains two end fastening elements detachably connected to it, each of which contains a hook and a toothed rack, which are made in a lamellar form as one unit. Toothed rack is made of lamellar and contains teeth on its sides. In the longitudinal direction of the rack, the teeth of one side are offset relative to the teeth of the other side. Each end fastening element is screwed into the coils of the spring with its toothed rack so that the screwed coils are located between the teeth of the toothed rack.
EFFECT: increased strength and maintainability of the spring.
5 cl, 4 dwg
