| 摘要 |
A door closer 2 comprising a housing 4 for fitting into a door, the housing 4 having a mounting plate 8 with an opening adjacent to a central bore 6 of the housing; a tension member 54 extending longitudinally within the central bore of the housing and extending outwardly of the housing through the opening to define an end thereof for fitting to a door frame; a movable body 32 within the housing 4 and adapted for longitudinal movement within the central bore 6, the movable body being connected to the tension member; a spring 38 within the housing and biasing the movable body in a first direction away from the mounting plate so as to urge the tension member inwardly of the housing in a door closing motion; and a hydraulic damping assembly 30 for damping the longitudinal movement of the movable body at least in the first direction. The hydraulic damping assembly is disposed within the central bore 6 of the housing 4, wherein the hydraulic damping assembly comprises a piston, coupled to the housing by a piston shaft 20,and slidable in a fluid-filled chamber78 within the movable body, the piston divides the chamber into two compartments and the piston permits restricted movement of the fluid from one compartment to the other when the movable body is moved relative to the piston. An accumulator 90 comprising a compressible foam body is disposed in the fluid-filled chamber so as to be compressible by the piston when the movable body has been moved by movement of the tension member out of the housing. A fitting tool for the door closer is also provided. |
