| 摘要 |
A door operator includes a housing; a hydraulic compartment providing a reservoir volume; a sealed pressure compartment; a drive unit disposed in the housing and coupleable to a door via an output shaft; a hydraulic pump in hydraulic connection with the hydraulic compartment and the sealed pressure compartment; a motor in driving relationship with the hydraulic pump; and a spring force accumulator disposed in the housing. The spring force accumulator is associated with the sealed pressure compartment and coupled to the drive unit. |
