JPH04118494A - Shutter curtain for building - Google Patents

Abstract

PURPOSE:To remove the loose wind of a curtain by a method in which, while the shutter curtain of wind-up type is constructed by connecting alternately the main slat of rigid member to the auxiliary slat of elastic member, the elastically restoring force of the auxiliary slat is set at the most same value as the delivery-force of the shutter curtain. CONSTITUTION:The shutter curtain 1 to be wound on a wind-up drum 2 is constructed by connecting alternately the main slat 4 made of the rigid member such as alminum, etc., to the auxiliary slat 5 made of the elastic member such as spring steel, etc. The elastically restoring force of the auxiliary slat 5 is set at the at most same value as the delivery-force of the shutter curtain, whereby when the shutter curtain 1 is wound up on the drum 2, said curtain is prevented from becoming large in diameter by the expansion due to spring force. Consequently, the operation of the curtain may be carried out 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 be transformed into a straight position along a guide rail and a spiral position when wound around a winding drum, so conventionally, it is formed by bending a band-shaped plate material. 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 was devised for the purpose of providing a shutter curtain for a building that can eliminate these drawbacks. A shutter curtain for a building that is wound around an assembled winding drum, the shutter curtain comprising 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 sub-slats are elastically deformed and wound around the winding drum in a spiral shape. It is characterized in that the elastic restoring force of the slat is set to be approximately equal to or weaker than the unwinding force directed in the curtain unwinding direction by the shutter curtain unwound from the winding drum.

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 drawing, reference numeral 1 denotes a shutter curtain for a building shutter, and the shutter curtain 1 is wound around a winding drum 2 installed above an opening, and is wound around a guide rail 3 provided on the left and right sides of the opening. It is designed to open and close up and down when guided.

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 4b.
) is formed, but the fitting groove 4a
, 4b is sloped such that the inner side of 5M is higher and the outdoor side is lower. Engagement holes 4c are bored at the outer sides of the engagement grooves 4a, 4b with a pitch A between them.
Length of the engagement hole 4c in the left-right direction (length in 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. Furthermore, 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 manner is wound around the winding drum 2 by elastically deforming the sub-slats 5 and curving them. Furthermore, when the shutter curtain 1 is wound up to the road limit position, it descends under its own weight and the unwinding force is the weakest. The elastic restoring force of the secondary slats 5 is set to be approximately equal to or weaker than the feeding force of the shutter curtain 1.

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. Become. Moreover, the elastic restoring force of the sub-slat 5 which has been elastically deformed and wound around the winding drum 2 is set to be approximately equal to or weaker than the unwinding force of the shutter curtain 1, and as a result, the winding When the shutter curtain 1 is wound around the take-up drum 2, the elastic restoring force of the sub-slats 5 causes the shutter curtain 1 to swell to a large diameter, which loosens the winding state and increases the winding diameter. This makes it possible to avoid the winding position being disturbed.

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. Moreover, as shown in Figure 4 Y and Z, this product can be bent to accommodate both forward and reverse winding methods, so it can be handled in the same way as an interlocking type shutter curtain. There will be no problem.

Furthermore, in this case, the engagement piece 5C is fitted into the engagement hole 4c to restrict the slats from shifting in the left and right direction. There is also the advantage that there is no need to attach end fittings to avoid the problem.

Note that the present invention is, of course, not limited to the above-mentioned embodiments, and includes a slat with a fitting groove and a fitting side protruding in the horizontal direction, or a slat with a fitting groove and a fitting side on the indoor side. The fitting groove may be sloped so that it is lower, and the means for preventing the fitting groove from being pulled out is not limited to one in which the engagement piece fits into the engagement hole, but may be a general one such as a rivet. A stopping means may also be used.

Furthermore, the width of each of the main and sub slats (III in the guide rail direction, not in the direction between opposing guide rails) can be set arbitrarily if necessary; for example, the width of the sub slat is wider than the main slat. It goes without saying that it is good to have a wider width. Furthermore, it is also possible to employ various patterns on the slat surface portions of the main and sub-slats.

[Operations and Effects] In summary, since the present invention is constructed as described above, the shutter curtain includes 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 interlock joints that were required in the past, and there is no gap between adjacent slats. It is possible to avoid the generation of unpleasant noise caused by rubbing or collision, and the noise can be significantly reduced, making it quieter. 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. This means that it can be wrapped. Furthermore, the elastic restoring force of the sub-slats that have been elastically deformed and wound around the winding drum is set to be approximately equal to or weaker than the unwinding force of the shutter curtain, and as a result, the winding drum When being wound up,
It is possible to reliably prevent the shutter curtain from expanding to a large diameter due to the elastic restoring force of the sub-slats, loosening the winding state, and increasing the winding diameter, thereby making it possible to avoid the winding posture of the shutter curtain being disturbed. Become.

[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
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 3

Claims (1)

[Claims] A shutter curtain for a building that is wound around a winding drum assembled in an opening, the shutter curtain comprising:
Main slats made of a rigid material and sub-slats made of an elastic material are connected in series, and the elastic deformation of the sub-slats creates a spiral shape on the winding drum. In addition to being configured to be wrapped around the
The elastic restoring force of the sub-slat that is elastically deformed and wound around the winding drum is set to be approximately equal to or weaker than the unwinding force directed in the curtain unwinding direction by the shutter curtain unwound from the winding drum. Shutter curtains for buildings that are characterized by: