JPH04118493A - Shutter curtain for building - Google Patents

Abstract

PURPOSE:To make the wind up of a curtain smooth by a method in which while the shutter curtain capable of being wound is composed of the main slat made of a rigid member of substantially U shape in cross section and the auxiliary slat made of elastic member, the auxiliary slat is previously formed into a winding shape. CONSTITUTION:The shutter curtain which may be front-wound or rear-wound on a wind-up drum is constructed by connecting alternately the main slat which has the almost U shape in cross section and is made of a rigid member such as aluminum, etc., to the auxiliary slat 5 which is made of the elastic member such as spring steel. In the case of front-winding where the front surface of the shutter appears outside, the opening degree of the ends of the auxiliary slat 5 is narrowed, whereas in the case of rear-winding, said opening degree is winded, and then said slat is formed into the shape in the state of being wound on a drum. When the shutter curtain is closed, fitting sides 5a, 5b are made parallel by the spring action of the auxiliary slat 5. Consequently, the shutter curtain may be wound up smoothly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a shutter curtain for use in buildings such as houses and buildings.

[Prior art and problems to be solved by the invention] Generally,
This type of shutter curtain for buildings is wound around a winding drum and is opened and closed while being guided by guide rails formed on both sides of the opening. By the way, this shutter curtain needs to be formed so that it can change its shape between a straight position along the guide rail and a spiral position when wound around the winding tram. The slats were interlocked together to form a shutter curtain. However, in this case, since there is inevitably a gap and play in the interlock joint, there is a problem that noise is generated when opening/closing or when exposed to wind during closing.

Therefore, attempts have been made to eliminate the gap in the interlock joint, but these methods have the problem of complicating the structure of the interlock joint, and are therefore impractical.

[Means for Solving the Problems] In view of the above-mentioned circumstances, the present invention has been devised for the purpose of providing a shutter force for buildings that can eliminate these drawbacks. A shutter curtain for a building that is wound around a winding drum assembled in a section, the shutter curtain having a main slat made of a rigid material and a sub-slat made of an elastic material. The slats are connected in a series so that the secondary slats are wound spirally around the winding drum by elastic deformation, and the secondary slats are wound around the winding drum in a spiral manner. It is characterized by being curved in advance to imitate the posture of the person.

With this configuration, the present invention eliminates the interlock coupling and makes it possible to obtain a low-noise shutter.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a regular-wrap shutter curtain for a building shutter. It is configured to open and close vertically while being guided by a guide rail 3.

The shutter curtain 1 includes a main slat 4 made of a rigid material such as metal such as steel or aluminum, or synthetic resin used in existing shutter curtains, and an elastic material such as spring steel or synthetic resin. It is constructed by alternately connecting sub-slats 5 made of a material having .

In other words, in this embodiment, the main slat 4 is formed into a substantially U-shape facing indoors, and both legs are further bent back toward the outdoors to fit into hairpin grooves with the outdoor side open. Fitting grooves 4a, 4b (For convenience, the upper one is called the upper fitting groove 4a, and the lower one is called the lower fitting groove 4.
b) is formed, but the fitting groove 4
a and 4b are sloped such that the indoor side is higher and the outdoor side is lower. And on the outer side of these fitting grooves 4a, 4b,
Engagement holes 4C are bored at intervals of pinch A, and the length of the engagement holes 4C in the left-right direction (the length in the eight pitch directions) is set to B.

On the other hand, the secondary slat 5 is bent into a substantially U-shape, and its fitting sides 5a and 5b (for convenience, the upper side is referred to as the upper fitting side 5a, and the lower side is referred to as the lower side). Fitting side 5b
As in the case of the fitting groove portion of the main slat 4, the groove portion (distinguished as ”) is sloped such that it is higher on the indoor side and lower on the outdoor side. Further, an engaging piece 5C is formed by stamping so that its tip is on the crotch side and protrudes toward the opposite side of both fitting sides. The pitch of the engagement pieces 5C is set to be approximately half (B/2) of the length of the engagement hole 4C.

Then, the shutter curtain 1 connects the lower fitting side 5b of the sub slat 5 to the upper fitting groove 4a of the main slat 4 with the engaging piece 5.
The upper fitting side 5a of the sub-slat 5 is pushed into the lower fitting groove 4b in the same way until it engages with the engagement hole 4c, thereby forming a continuous shape. However, the shutter curtain 1 formed in a series in this way is wound around the winding drum 2 in a normal winding state by elastically deforming the sub-slats 5 and curving them toward the normal winding side. However, the slat surface portion 5d of the sub-slat 5 is formed to be curved in advance toward the normal winding side in the indoor direction, following the attitude in which the winding drum 2 is wound. As the shutter curtain 1 is unwound from the winding drum 2, its own weight increases, but the curvature of the sub-slats 5 is corrected by this dead weight, and the shutter curtain 1 is set to be in a substantially straight state.

In the embodiment of the present invention configured as described above, the opening and closing of the opening is achieved by raising and lowering the shutter curtain 1 guided by the guide rail 3, but the shutter curtain 1 is moved by a conventional interlock connection. Unlike the case where rigid slats are connected together in a bendable manner, there is no gap between the slats, and as a result, there is no noise caused by the slats colliding with each other during opening/closing operations or when exposed to wind. The occurrence of noise can be reliably avoided, and a quiet, low-noise building shutter can be obtained. Furthermore, since there is no gap between the connecting parts of the slats, it has the advantage of being excellent in fire prevention, smoke prevention, and sound insulation.

Moreover, in this case, when winding on the winding drum 2,
Since the elastic and flexible sub-slats 5 are curved instead of the rigid main slats 4, winding can be done in a spiral shape without any problems, similar to those with conventional interlock connections. However, the sub-slats 5 are curved in advance toward the positive winding side in the indoor direction, and as a result, the winding of the shutter curtain l on the winding drum 2 is promoted, and the winding drum can be smoothly rolled. 2
In addition, it is possible to avoid problems such as the shutter curtain 1 being swollen by the elastic restoring force of the sub-slats 5 when it is wound around the winding drum 2. Furthermore, when the shutter curtain 1 is closed, it will be in a substantially straight line state due to its own weight, so there will be no problem.

In addition, in this case, since the connecting ends of the slats 4.5 are not exposed to the outside, it not only has a favorable appearance, but also has the advantage of being very convenient in terms of crime prevention and rust prevention.

Furthermore, in this case, the engagement piece 5c is fitted into the engagement hole 4c to prevent lateral deviation, so that the slats do not deviate from side to side like the conventional interlock connection. There is also the advantage that there is no need to attach end fittings to avoid the problem.

It goes without saying that the present invention is not limited to the above-mentioned embodiments, and can be implemented not only in forward-wound shutter curtains but also in reverse-wound shutter curtains. That is, as in the second embodiment shown in FIG. 7, the sub-slats 10 may be curved in advance toward the reverse winding side in the outdoor direction. It will be possible to promote this.

In addition, the fitting groove and the fitting side of the slat may protrude in the horizontal direction, or the fitting groove and the fitting side may be inclined so that it is lower on the indoor side,
Further, the means for preventing the engagement groove from being pulled out is not limited to one in which the engagement piece is fitted into the engagement hole and is retained, but a general stopping means such as a rivet may be used.

Furthermore, regarding the width of each main and secondary slat (width in the guide rail direction, not in the direction between opposing guide rails),
It can be set arbitrarily as necessary,
For example, it goes without saying that the secondary slats may be wider than the main slats. Furthermore, it is also possible to employ various patterns on the slat surface portions of the main and sub-slats.

Incidentally, the radius of curvature of each sub-slat should be made smaller on the hanging source side (the side connected to the winding drum), so that the spiral shape (winding diameter) of the shutter curtain when wound around the winding drum is smaller. ), but it is not limited to this. In short, if the sub slat is curved to follow the attitude of winding on the winding drum, Winding up of the shutter curtain is facilitated, and therefore, it does not matter whether the radius of curvature of the sub-slats is larger or smaller than the winding diameter on the winding drum.

[Operations and Effects] In summary, since the present invention is constructed as described above, the shutter curtain has main slats made of a rigid material and sub-slats made of an elastic material. By connecting the slats in a series, it is possible to eliminate the interlocking joints that were previously required.Therefore, there is no gap between adjacent slats, and even when the slats are exposed to drafts during opening/closing operations, the slats can easily It is possible to avoid the generation of unpleasant noise caused by rubbing or collision, and it is possible to significantly reduce noise and make it quiet. Furthermore, since there is no gap between adjacent slats, it can greatly contribute to improving fire prevention, smoke prevention, and sound insulation.

Furthermore, when winding onto the winding drum, the elastic sub-slats are curved instead of the rigid main slats, so the winding can be carried out in a spiral shape without any problems, just like with conventional interlocking joints. However, the secondary slats are curved in advance to imitate the posture of winding around the winding drum, and as a result, winding of the shutter curtain around the winding drum is facilitated. It can be smoothly wound on the winding drum, and when it is wound on the winding drum,
It is possible to avoid a problem in which the shutter curtain swells due to the elastic restoring force of the sub-slats.

[Brief explanation of drawings]

The drawings show an embodiment of the building shutter curtain according to the present invention, in which Fig. 1 is a schematic front view of the building shutter, Fig. 2 X and Y are cross-sectional views and plan views of the main slats, Figure 3
The figure is a side view showing the shutter curtain in a straight state.
The figure is an enlarged sectional view of the connecting part, FIG. 6 is a side view of the winding drum part, and FIGS. In the figure, 1 is a shutter curtain, 2 is a winding drum, 3 is a guide rail, 4 is a main slat, and 5 is a sub-slat. Figure 2 Figure 6 Figure 7

Claims (1)

[Claims] A shutter curtain for a building that is wound around a winding drum assembled in an opening, the shutter curtain comprising:
A main slat made of a rigid material and a sub-slat made of an elastic material are connected in series, and the elastic deformation of the sub-slat creates a spiral shape on the winding drum. In addition to being configured to be wrapped around the
A shutter curtain for a building, characterized in that the sub-slats are curved in advance to imitate the attitude in which they are wound around a winding drum.