| 摘要 |
The invention relates to a door closer (10) with a driving spindle (20) which is mounted in a manner such that it can be connected to and rotated by a door wing, wherein the driving spindle (20) is connected within a housing (15) to a lifting cam disc (22) which is arranged between at least one supporting means (23) and at least one pressure means (24), wherein the supporting means (23) and the pressure means (24) are located on a tab carriage (25), a piston (30) for damping is arranged in the housing (15), and the piston (30) divides the housing (15), which is filled with a pressure medium, into two pressure spaces (26, 27) and is connected to the tab carriage (25) by a spring (28) which interacts firstly with the piston (30) and secondly with the housing (15), wherein the piston (30) has a coupling element (40) and an outer element (50), and the coupling element (40) is mounted in an at least partially form-fitting manner in a receptacle (51) of the outer element (50), and the receptacle (51) and an outer surface (41) of the coupling element (40) have grooves (42, 52), wherein a snap ring (60) connects the coupling element (40) and the outer element (50) and is at least partially arranged in the two grooves (42, 52) in such a manner that it is mounted inaccessibly within the piston (30). |
