Top door closer shaft has swivel arm, slide piece movable on slide rail, housing containing damping pistons, spring supports, spring assemblies, cam plates, valve units and pressure rollers

摘要

The closer-shaft (1) consists of two symmetrically formed curved paths, with a shaft end protruding out of the housing and connected to a straight swiveling operating arm (29). The other end of the operating arm cooperates with a slide piece (31) movable in a slide rail (30). In a shared housing (4), on one side as seen from the axial center (7) of the closer shaft, are at least two superimposed, separate damping pistons (5,6). On the opposite side are two superimposed spring support elements (8,9) with attached spring assemblies (10,11).