Patent ID: 7650669
Filing Date: 2010-01-26
Classification: E05F,E05Y,Y10T

Abstract:
1. A door closer comprising: a housing having an axial direction; an output shaft supported by the housing, the output shaft being coupleable to a door via a pivotable actuating arm and being rotatable about an axis in a door opening direction and an opposite door closing direction; a cam disc disposed in the housing and mounted on the output shaft; a damping piston disposed in the housing and having a first force transmission roller charged against a cam path associated with the closing direction for rotating the output shaft in the closing direction; an opening piston disposed in the housing and having a second force transmission roller charged against a cam path associated with the opening direction for rotating the output shaft in the opening direction; and two fixing bolts extending in the axial direction of the housing and transversely to the axis of the output shaft and coupling the damping piston to the opening piston, the fixing bolts being disposed on two opposite sides of the output shaft, wherein each of the cam disc and the first and second force transmission rollers has a circumferential recess, the fixing bolts being disposed in the recesses so that each of the damping piston and the opening piston is prevented from rotating with respect to the cam disc.