摘要:
A ratchet mechanism which uses balls lets the balls fall down radially according to the prior art, for locking between the drum (1) which is fitted to the roller blind tube and the immobilised shaft (2). According to the invention the drum (1) is provided with changed depressions which have protrusions (4', 5', 6') for prevention of this movement. The protrusions partly support the ball which at any given instant is topmost and hence enables a slow rotation.
摘要:
In traditional roller blinds the blocking is released by a short pull in the bottom edge part whereby gravity frees the blocking element. This requires manual skills in order to avoid erratic handling. According to the invention the release may occur positively in that the blocking element is released by means of an operating cord or chain (S) which activates those arms (A) which already connect the chain wheel to the roller blind roller.
摘要:
The operation of a roller blind occurs by means of a ball cord and a pulley. The ball cord may be wound several turns around the pulley, in that oblong axial tracks have been provided in the pulley. Thereby the winding may be preserved without jamming between the windings. Greater forces may be transmitted to the pulley than in case of known constructions.
摘要:
The operation of a roller blind occurs by means of a ball cord and a pulley. The ball cord may be wound several turns around the pulley, in that oblong axial tracks have been provided in the pulley. Thereby the winding may be preserved without jamming between the windings. Greater forces may be transmitted to the pulley than in case of known constructions.
摘要:
It is suggested in connection with the production of slat packages for Venetian blinds whose slats (3), placed over each other, are introduced between a first and a second transverse band (2, 2') in double rungs in carrying bands or ladders (1) consisting of bands or cords, and where the slats (3) are conveyed one by one tothe carrying band (1) and lifted after being introduced into a double rung (2, 2') - in order to enable mechanical introduction of the slats - that a double rung (2, 2') should be stretched between two teeth (4) projecting over the plane in which the slats are conveyed, that a slat (3) is conveyed forward until it has passed under the first of the two transverse bands (2, 2'), and that the slat (3) is then lifted so that when further conveyed it passes over the second of the two transverse bands (2, 2'). The slat (3) can be lifted by means of an inclined plane (5) placed between the teeth (4).
摘要:
A roller for a roller blind in the shape of a tube (T) comprising a mechanism known per se is braked by means of friction, in that a compression spring (7) is compressed when the blind is pulled down and establishes a force between a collar (6) on the non-rotating rod (2) of the roller blind, and a nut (8) which is rotated by the tube. The nut has a shoulder (8a) which cooperates with a corresponding shoulder (14) at the end of the non-rotating rod. An alternative spring force is obtained by means of a piston in an air cylinder in which a calibrated exhaust opening for the air reduces the braking action when rotation is slow.
摘要:
Vertical slat blinds consist of slats which are hung vertically on small trucks which are sideways displaceable. Known constructions do not permit a complete retraction of a vertical slat blind, unless all the slats are adjusted to be perpendicular to the plane of the vertical slat blind. The invention solves this problem, in that there is interposed an element between the truck and each slat which permits that the slats are turned perpendicular to the plane of the vertical slat blind, although the adjustment is different. In an embodiment this is obtained in that a hook or ring (8a, 8') on the truck cooperates with a particularly shaped hole (7a, 7') in the slat support. Turning in relation to the hook causes the slat support to be lifted.
摘要:
Vorrichtung zum Steuern und Führen von Gegenständen, beispielsweise Jalousielamellen, entlang einer Schiene (2), wobei die Gegenstände zwischen einer Stellung, in der sie an einem Bereich der Schiene (2) zusammengezogen angeordnet sind, und einer Stellung, in der sie entlang der Schiene (2) vorzugsweise gleichmässig verteilt sind, bewegbar sind und über Mittel (7), die eine Abstandsänderung zwischen zwei benachbarten Gegenständen zulassen, m i teinan- der verbunden sind. Durch Einwirken einer Zugkraft auf denjenigen Gegenstand, der am weitesten aussen angeordnet ist, z.B. auf die Unterleiste einer Jalousie, können die Gegenstande bewegt werden. An dem am weitesten aussen liegenden Gegenstand ist ein entlang der Schiene bewegbarer Transportschieber (1) angebracht, dessen Abmessung in Längsrichtung der Schiene (2) so gewählt ist, daß in zusammengezogenem Zustand der Gegenstände diese auf dem Schieber (1) aufsitzen, dessen Höhe so bemessen ist, daß die auf ihm aufsitzenden Gegenstände gegenüber der Schiene (2) angehoben sind.
摘要:
A ratchet mechanism which uses balls lets the balls fall down radially according to the prior art, for locking between the drum (1) which is fitted to the roller blind tube and the immobilised shaft (2). According to the invention the drum (1) is provided with changed depressions which have protrusions (4', 5', 6') for prevention of this movement. The protrusions partly support the ball which at any given instant is topmost and hence enables a slow rotation.