Flexible or portable closure – partition – or panel – With hood – canopy – shield storage chamber – or outrigged... – For plural strip – slat – or panel and/or pleating type
Patent
1984-06-18
1986-06-17
Britts, Ramon S.
Flexible or portable closure, partition, or panel
With hood, canopy, shield storage chamber, or outrigged...
For plural strip, slat, or panel and/or pleating type
E04F 1008
Patent
active
045950431
DESCRIPTION:
BRIEF SUMMARY
FIELD OF ART
The present invention relates to a shutter device and more particularly to a shutter device in which a plurality of panels are each partly engaged with panel lift means such as a chain or the like to effect panel ascending and descending motions smoothly and, during panel storage, are folded and suspended from support rails disposed above guide rails.
BACKGROUND ART
Recently, there has been proposed a shutter device in which panels are disposed on the same plane in which they are supported by guide rails, and are disposed in a mutually parallel folded fashion in a state in which they are stowed in a storage box contiguous to one end of the guide rails. Indeed this type of device has advantages, for example, the noise generated during movement of the panels is reduced, the panel width can be made large and a good external appearance is obtained. But, there have been drawbacks, for example, it is difficult to smoothly perform the folding and stowing operation into the storage box and the drawing-out operation, and a complicated driving device is needed in order to ensure smooth operations. Further, it is impossible to immediately become aware of overlapping or squeezing of panels in the guide rails.
DISCLOSURE OF THE INVENTION
The object of the present invention, in order to overcome the conventional drawbacks mentioned above, is to provide a shutter device in which a plurality of panels adapted to ascend and descend along guide rails are each partly engaged with a panel lift means and panel ascending and descending motions are performed smoothly and quietly; besides, panel squeezing and useless accidents are prevented.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a longitudinal sectional view of an embodiment of the present invention;
FIG. 2 is a schematic exploded perspective view of a drive portion thereof;
FIG. 3 is a front view of a panel lift means sensor;
FIG. 4 is a bottom view of the panel lift means of FIG. 3 looking upwardly in the direction of the arrows 4--4 in FIG. 3;
FIG. 5 is a plan view, partly in section, of an interengaged state of a driving sprocket and a driving chain;
FIG. 6 is a plan view, partly in section, of a panel;
FIG. 7 is a longitudinal sectional view taken on line A--A of FIG. 6;
FIG. 8 is a plan view, partly in section, showing connection between the driving chain and the panel;
FIGS. 9 and 10 are each a longitudinal sectional view of a principal portion of a transverse frame of the panel.
BEST FORM FOR PRACTISING THE INVENTION
An embodiment of the present invention will be described hereinunder with reference to the drawings.
The present invention has panels 2 adapted to ascend and descend along guide rails 1, driving chains 3 (panel lift means) 3 adapted to engage part of each panel 2 to let the latter perform ascending and descending motions, and support rails 4 adapted to engage part of the chains 3 to suspend and support the panels 2 in a folded state.
The guide rails 1 are disposed on both sides of an opening such as a building gateway, window or the like, and at the upper end portions thereof there is provided a storage box 5 which supports the panels 2 in a folded state as illustrated in FIGS. 1 and 2. In the vicinity of the upper end of each guide rails 1 and on the inner wall of the storage box 5 are disposed the support rail 4 and a chain top guiding rod 6 both extending downwardly slantwise. Near the upper end of each guide rail is provided a sensor (panel lift means sensor) 7 for sensing an abnormal overlapping or squeezing of the panels 2 in the guide rail 1. Further, in the vicinity of a driving sprocket 8 for driving the chain 3 there are mounted chain separating plates 9 and 10 for positively separating the chain 3 from the sprocket 8. Near the entrance of the storage box 5 are provided panel guides 11 for guiding the lower end of the panel 2 smoothly into and out of the storage box 5.
The panel guides 11 are inclined upwardly toward the interior of the storage box 5 as shown in FIG. 1 so that rollers 22 previded at the lower end of t
REFERENCES:
patent: 3280888 (1966-10-01), Davis
patent: 4139042 (1979-02-01), Watanabe et al.
Kondo Koichi
Nozawa Nobuaki
Britts Ramon S.
Bunka Shutter Co., Ltd.
Lumitter Industry Co., Ltd.
Purol David M.
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