Door closure device, has central pressure space assigned to extension and to pressure piston

摘要

A door closer has a door piston (100) operating on a drive shaft with a pressure piston (200) and an energy store (30) acting on the piston (200).A central pressure space (D3) is assigned to the extension (110) and to the pressure piston (200) as well as at least one further pressure space (D4) assigned to the pressure piston (200) in which an over-current conduction (12) has a choke, and the piston and housing each have at their disposal the channels joining the pressure spaces.