| 摘要 |
A door closer 1 includes an anchor assembly 10 for mounting on a door frame, an actuator assembly 30 for mounting within the thickness of a door which is hinged for movement between open and closed positions relative to the door frame, an operating member 22 coupled by a linkage 20 to the anchor assembly 10 and mounted for a range of movements between a retracted position and an extended position, a resilient driving apparatus 45 arranged to exert a driving force on the operating member 22 to drive the operating member towards the retracted position to draw the door into its closed position relative to the frame, a damper mechanism 50 operatively connected to the operating member 22 so as to damp movement of the operating member 22 at least in a direction towards the retracted position, and a resilient thrust device 90 arranged to exert an increased driving force on the operating member 22 over a defined part of its range of movement as the operating member 22 approaches the retracted position, corresponding to movement of the door over a final part of its movement into its closed position, and wherein the resilient thrust device 90 includes at least one spring 92 which acts in a direction generally normally inwardly relative to the direction of movement of the operating member 22, to apply the increased driving force to the operating member 22. |
