| 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; (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; and (f) an adjuster of the hydraulic damping assembly, for adjusting the damping rate of the longitudinal movement of the movable body at least in the first direction, the adjuster comprising a rotatable threaded valve member of a fluid bypass valve located at an end of the hydraulic damping assembly which faces the opening in the mounting plate, and an end member for retaining the valve member captive in the adjuster. |
