| 摘要 |
A door closer comprising: (a) a housing for fitting into a door, the housing having a mounting plate with an opening adjacent to a central bore of the housing; (b) a tension member 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; (c) a movable body within the housing and adapted for longitudinal movement within the central bore, the movable body being connected to the tension member; (d) a spring 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 (e) a hydraulic damping assembly for damping the longitudinal movement of the movable body at least in the first direction, the hydraulic damping assembly being disposed within the central bore of the housing, wherein the hydraulic damping assembly comprises a piston, coupled to the housing by a piston shaft, and slidable in a fluid-filled chamber 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, and an accumulator comprising a compressible foam body 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, the compressible foam body comprising an elongate body having a channel in an outer circumferential surface thereof extending along the length of the elongate body. A fitting tool for the door closer is also provided. |
