Door closer with free-swing function

摘要

A door closer, in particular a hinge door closer, having a free-swing function, including a door closer housing, an output shaft to be connected to a door, a piston assembly connected to the output shaft and guided in the door closer housing, a closer spring, a piston rod adapted to connect the piston assembly to the closer spring, a free-swing assembly which is adapted to enable a translational motion of the piston assembly decoupled from the closer spring when the closer spring is locked, and which is embodied as a sliding-coupling which exclusively transmits compressive forces between the closer spring and the piston assembly, and a hydraulic lock compartment adapted to lock the closer spring.

主权项

1. A door closer having a free-swing function, comprising:
a door closer housing; an output shaft configured to be connected to a door; a piston assembly connected to the output shaft and guided in the door closer housing; a closer spring; a piston rod that connects the piston assembly to the closer spring and arranged parallel to a longitudinal door closer axis; a free-swing assembly embodied as a sliding-coupling that exclusively transmits compressive forces between the closer spring and the piston assembly that enables a translational motion of the piston assembly decoupled from the closer spring when the closer spring is locked; a hydraulic lock compartment that locks the closer spring; and a pocket arranged in the piston assembly, the piston rod movably guided on the pocket, wherein the sliding-coupling is formed by the pocket arranged in the piston assembly.