Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent
1994-01-14
1996-08-20
Johnson, Blair M.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
1601761, 160900, E06B 936
Patent
active
055470076
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to an activation device for horizontally moveable curtain strips which can be pivoted together about their longitudinal axis with a sliding element capable of sliding longitudinally in a curtain rail and connected to one another by distance limiters, each of which carry a freely suspended curtain strip on a pivoting axis of limited rotatability and with a drive mechanism which has a puller and a shaft which passes through the sliding elements, said shaft being capable of rotating with the puller in order to pivot the curtain strips and that in each sliding element a gear system is arranged which connects a pivot axis to the shaft.
An activation device of this type has become known through DE A 26 37 067. Here the puller is a string pull which is guided to the outside and on which the curtain strips are moved both horizontally and can also be pivoted about their vertical axes. For this activation device a special pulling carriage is necessary for horizontally moving the curtain strips, said pulling carriage itself carrying no curtain strips. In practice it has now been found that this pulling carriage even after incorporation of a suitable braking device moves inadvertently during the pivoting of the curtain strips which makes it almost impossible or very difficult to align the curtain strips uniformly.
SUMMARY OF THE INVENTION
The invention has the task of devising an apparatus of the type mentioned with which the curtain strips can be activated more precisely and which is also simpler in construction and can therefore be manufactured at lower costs. This problem is solved by the fact that the puller has two catches at a certain distance which can touch against the front runner in order to move it in the one or the other direction in the curtain rail.
In the activation device according to the invention the front runner is not moved by the shaft but rather directly with the catches of the puller which may be a string puller. When the curtain strips are moved, therefore the shaft does not have to be rotated, which signifies a significant reduction in the activation noise as well as in the torsion of the shaft. The low torsion also permits very long activation devices, e.g., with a length of 4 meters.
The gear system for transmitting the movement of the puller to the shaft may be stationary, e.g., installed on a curtain rail, which permits significantly simpler installation and cost-favorable production. The front runner can then be formed essentially like the other sliding elements. A special pulling carriage is therefore unnecessary. It is also important that in the activation device according to the invention the force to rotate the curtain strips is better separated from the force for moving the curtain strips.
Since the puller acts directly on the front runner, the curtain strips can be moved much more rapidly than with the previously known activation device and therefore the curtain can be closed more quickly. Despite these advantages the activation device according to the invention can be manufactured much more simply and with fewer parts.
Other advantageous features may be obtained from the dependent claims, the following description and the drawing. An example of embodiment of the invention is illustrated below with reference to the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIGS. 1 through 3 are perspective partial views of the activation device according to the invention, where some of the parts are omitted for reasons of clarity,
FIG. 4 is a cross-section through an activation device according to the invention,
FIG. 5 is a perspective partial view of the activation device according to the invention,
FIG. 6a is a perspective view of a gear part and
FIG. 6b is a partial section through the gear part shown in FIG. 6a.
DETAILED DESCRIPTION OF THE INVENTION
The activation device has a curtain rail 1 with the cross-section shown in FIG. 4. At one end of the rail an end housing 4 is seated in which a bevel gear drive 10 is mounted. This housing
REFERENCES:
patent: 4316493 (1982-02-01), Arena
patent: 4844139 (1989-07-01), John
Johnson Blair M.
K. Bratschi, Silent Gliss
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