Lifting jack for e.g. roller blind, has fastening system for fastening jack at roller blind case, and pin protruding from side of case, where system has screw applying radial force to pin in screwed condition to fixedly hold pin in seat

摘要

The jack has a fastening system for fastening the jack at a roller blind case. The fixing system has a seat (70), which is suitable to axially receive a pin (62) utilized as a centering device. The pin protrudes from a side of the roller blind case. The fastening system has a screw (52), which applies a radial force to the pin in a screwed condition to fixedly hold the pin in the seat, where the screw exhibits a concave point. The screw is arranged in a bore hole (50), which stands perpendicular to an axis of the seat.