Abstract:
The invention relates to a device for pairwise coupling of systems for window covering, which are each provided with at least one rotatable shaft for winding up or unwinding the window covering. The device comprises a first part (10) adapted for connection to the winding shaft of a first system, a second part (20) adapted for connection to the winding shaft of a second system, wherein the first and second parts are rotatable relative to each other and wherein the first part and the second part are provided with co-acting adjusting means which are adapted to adjust the winding shaft of the second system relative to the winding shaft of the first system over a desired angle of adjustment, and to fix the winding shaft of the second system in the corresponding position. The adjusting means comprise a worm wheel transmission, wherein the worm screw (11) forms part of the first part (10) and the worm wheel (21) forms part of the second part (20).
Abstract:
The present invention relates to a device (1) for automatically operating a screen (100), such as a window covering, provided with cords (104), the screen comprising an elongate housing (101) in which is arranged at least one rotatable shaft provided with at least one winding roller (103) for winding up or unwinding the cords of the screen. The device comprises a motorized drive (22) and at least one mechanical transmission co-acting with the motorized drive and provided with shaft coupling means (10) for rotatingly driving the shaft. According to the invention the device is suitable for receiving in the elongate housing, the device is provided with a passage (4) for the rotatable shaft and the shaft coupling means are arranged close to the passage. The invention also relates to such a screen provided with a device according to the invention.
Abstract:
The present invention relates to a device for automatically operating a screen, such as a window covering, provided with cords, the screen comprising an elongate housing in which is arranged at least one rotatable shaft provided with at least one winding roller for winding up or unwinding the cords of the screen. The device comprises a motorized drive and at least one mechanical transmission co-acting with the motorized drive and provided with shaft coupling means for rotatingly driving the shaft. According to the invention the device is suitable for receiving in the elongate housing, the device is provided with a passage for the rotatable shaft and the shaft coupling means are arranged close to the passage. The invention also relates to such a screen provided with a device according to the invention.
Abstract:
The invention relates to a breaking device (1) for a chain of a screen (100), comprising a housing having a detachable couplable first and second housing part (210, 220). The breaking device further comprises a third toothed wheel that brings the first toothed wheel in engagement with the second toothed wheel. The coupling between the first housing part and the second housing part releases when the pulling force reaches or exceeds a predetermined threshold value. The coupling comprises a first and a second coupling that are arranged such that near the second coupling a preferred side is defined for operation of the lifting of the screen, whereby higher pulling forces are possible without the coupling releasing, than at a non-preferred side, which non-preferred side lies near the first coupling.
Abstract:
The invention relates to a device for pairwise coupling of systems for window covering, which are each provided with at least one rotatable shaft for winding up or unwinding the window covering. The device comprises a first part (10) adapted for connection to the winding shaft of a first system, a second part (20) adapted for connection to the winding shaft of a second system, wherein the first and second parts are rotatable relative to each other and wherein the first part and the second part are provided with co-acting adjusting means which are adapted to adjust the winding shaft of the second system relative to the winding shaft of the first system over a desired angle of adjustment, and to fix the winding shaft of the second system in the corresponding position. The adjusting means comprise a worm wheel transmission, wherein the worm screw (11) forms part of the first part (10) and the worm wheel (21) forms part of the second part (20).