JP3311897B2 - Roll screen - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll screen, and more particularly, to suppressing the spread of a flame in a fire.
It also relates to an effective roll screen for evacuation.

[0002]

2. Description of the Related Art Generally, a roll screen is rotatably mounted on a ceiling or the like via a bracket or the like, and has a built-in spring means for applying a rotational force in a winding direction and a stopper means for appropriately preventing the rotation. And a raw cloth connected at one end so that the raw cloth can be wound and unwound by the winding shaft, and assembled at the other end of the raw cloth so that the raw cloth is always maintained in an extended state. It has been widely used as a partition between rooms or as a light shielding body. .

In addition, as the roll screen has become widespread, measures have been taken to increase the added value of the interior, or when a wide screen that covers the entire surface of a wide window surface is used, the winding shaft bends under its own weight to produce a roll. In order to prevent the cloth from wrinkling and twisting, a proposal has been made to divide the winding shaft in the longitudinal direction (Japanese Utility Model Publication No. 6-17992), so that the opposite side can be seen without winding up the screen. There is also a proposal to form a slit (Japanese Utility Model Laid-Open No. 6-18596). Also, an automatic roll screen equipped with a motor for winding and unwinding raw cloth under signal control is commercially available.

[0004]

By the way, in Japan, where there are many wooden houses, measures against fires have always been studied, and recently, fire measures have been required even for high-rise buildings. Various nonflammable and flame-retardant building materials such as interior materials have been provided.

The present inventor has considered such a fire prevention measure for a roll screen used indoors.
In addition to fire prevention, it is intended to be used as an effective means at the time of evacuation.

It is still another object of the present invention to provide a roll screen type fire shutter which can be used in place of a steel fire shutter conventionally provided in an emergency exit or the like.

[0007]

The roll screen of the present invention which achieves the above object is characterized by a winding shaft, a raw cloth having one end connected to the winding shaft so as to be wound and unwound,
A roll bar having a weight bar attached to the other end of the green cloth so as to maintain the green cloth in an extended state, wherein the weight bar is divided into two or more in the longitudinal direction, and the weight bar is Is provided with a vertical slit continuous up to the divided portion.

Examples of the raw cloth include woven and knitted fabrics made of noncombustible or flame-retardant materials such as silica cloth made of glass fiber.
Silica cloth having heat resistance and heat insulation at 0 ° C. is preferably used. In addition, it is preferable that the winding shaft, the weight bar, and other parts constituting the roll screen are also made of a nonflammable or nonflammable material.

The main body of the roll screen, such as the winding shaft, can be buried in the ceiling or wall surface, or can be mounted on the ceiling or wall surface. In order to exert the effect more effectively, use a buried structure that does not create a gap,
In the case of the above-mentioned mounting type, it is preferable to use a winding shaft or a decorative cover made of a non-combustible or flame-retardant material to close the gap.

The reason why the above configuration is employed in the present invention is as follows. That is, by using the non-combustible or flame-retardant cloth as described above, the cloth itself can be made non-combustible or flame-retardant. In addition, since the roll screen is used as a tool to cover the window surface or partition the interior of the room, keeping it in an extended state prevents, for example, a flame from coming out of the window and spreading the fire. It is preferable because it can function as a fire screen or as a fire screen that partitions the room. However, if the raw cloth of the roll screen is in an extended state, it may hinder evacuation of a person in the event of a fire or hinder firefighting activities in some places.

Therefore, in order to be able to be used as a fire protection screen as described above, but not to hinder the evacuation of people or hinder firefighting activities, a weight bar constituting the above-mentioned roll screen is provided. The structure was divided into two or more in the longitudinal direction, and the raw cloth was provided with a longitudinal slit reaching this division. Although the number of divisions depends on the length of the roll screen, about 2 or 3 is appropriate in many cases, but is not particularly limited. The winding shaft does not need to be divided, but is preferably a single shaft in order to avoid a complicated structure and a complicated operation. It is to be noted that, although only vertical slits are provided in the raw cloth, as described in Japanese Utility Model Application Laid-Open No. 6-18596, it is possible to allow a person to pass through. Not suitable.

In the above configuration of the present invention, it is preferable that the divided weight bars are provided so as to be connected in the longitudinal direction by a detachable connecting means. As such a connecting means, for example, a structure in which a magnet is assembled and magnetically attracted to adjacent opposing end portions of the divided weight bar is preferably exemplified, and a rod member which breaks relatively easily by hitting or the like is preferably used. They may be connected. The strength of the attracting force of the magnet and the strength of the rod member are set so as not to hinder the passage of a person in the event of a fire.

The present invention can be applied to any of a manually operated roll screen and the above-mentioned automatic roll screen.

Further, the roll screen of the present invention can be used in the same manner as in a conventional place such as a window surface or a room partition, and a conventional steel fire protection installed in an emergency exit or the like. It is also possible to install in place of the shutter.

[0015]

According to the above configuration of the present invention, it can be used as a general non-split type roll screen, and if it is in a stretched state, it functions as a fire prevention screen in case of fire, and it can be stretched as it is. Even in this state, the divided weight bar and the sewn cloth with slits easily open in a double-leafed manner, allowing people to pass through and not hindering evacuation and firefighting activities.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 shows the overall structure of a roll screen.
It is the perspective view shown in the state where makeup cover 1 was removed,
FIG. 2 is a front view showing the raw cloth 2 of the roll screen in an extended state where the raw cloth 2 is lowered to the floor (the decorative cover 1 is not shown).

In these figures, reference numeral 3 denotes a set frame fixed to, for example, an upper wall (not shown) of a window surface,
Brackets 31, 31 are provided at both ends extending in the horizontal direction, and the winding shaft 4 is rotatably installed between the brackets 31, 31. The roll screen of the present example is configured as an automatic roll screen having a motor 5 built in the winding shaft 4 as shown in FIG.

The raw cloth 2 is made of a sheet made of a non-combustible or flame-retardant material, for example, a silica cloth having a heat resistance of 1000 ° C. The upper end of the raw cloth 2 is connected to the winding shaft 4. The lower end is connected to the weight bar 6.

The feature of this embodiment is that the weight bar 6 is divided into three substantially equal lengths in the longitudinal direction, and magnets 7, 7 serving as connecting means are provided at opposite ends of these divided portions.
Are assembled so as to adsorb each other.
The raw cloth 2 is provided with a slit 21 in the vertical direction upward from the division.

The slit 21 may reach the upper end of the raw cloth 2 and constitute the raw cloth with substantially three sheets. However, the slit 21 is not provided so as to reach the upper end. Slit 2 only from the vicinity of the upper end of one sheet to the lower side
It is also preferable to provide 1. That is, this slit 21
Is provided to allow a person to pass by in the event of a fire. Therefore, if this is satisfied, it is not necessary to provide a slit to the upper end. There is an advantage that the work of connecting to No. 4 becomes easy. The position of the upper end of the slit 21 may be appropriately determined by design within a range suitable for allowing the person to pass through.

According to the roll screen having the above-described structure, the weight bar 6 is usually integrated into one bar by the attraction force of the magnets 7, 7, so that it is generally not divided. It has an appearance similar to that of a simple roll screen, and can operate while maintaining the stretched state of the whole woven fabric by one weight bar 6 during automatic winding and unwinding.

On the other hand, in the event of a fire, if the screen is in the unrolled state as shown in FIG. 2, the green cloth 2 is made of a sheet of a non-combustible or flame-retardant material, so that the cloth 2 functions as a fire-proof screen. The effect of suppressing propagation and suppressing fire spread is obtained. In the case of a structure in which the take-up shaft is not embedded in a blind box formed on a ceiling, a wall, or the like, as in the present embodiment, the decorative cover (incombustible or flame-retardant) shown in FIG. It is preferable to close the gap formed between the take-up shaft and the mounting surface such as the ceiling surface (or the surface of the set frame) by mounting the object, thereby obtaining a further effect. Also, even in such a state where the screen is unwound, if the user tries to pass through the slit 21 part, the weight bar 6 is easily separated because the divided part is merely attracted by the magnet, and the weight bar 6 is easily separated. The effect of facilitating the passage is obtained. In addition, since it is a magnet, it has the advantage that it can further function as a fire screen by adsorbing again after passing through by a person.

Further, a sensor for detecting a fire (heat detector,
A means for automatically lowering the screen in conjunction with a smoke detector or the like may be provided. In this way, it can be suitably used as, for example, a fireproof shutter provided at an emergency exit or the like, which is advantageous in reducing the cost. Also, in combination with the conventional steel fire shutter,
Installed in the middle of an evacuation taxiway, it is called a secondary fire prevention means and evacuation assistance means (means that can protect evacuees from flames and smoke for some time compared to the case without this fire prevention screen) There is also an advantage that a new and unprecedented fire prevention and evacuation aid can be provided.

Further, when the fire protection screen of the present invention is used as such a fire prevention / evacuation aid, the surface of the screen may be "can pass through" or "evacuate through this screen." , Etc., it is possible to give an appropriate instruction to a person who is in a hurry in an emergency, and it is possible to obtain an advantage that it is useful for evacuation guidance not only in the hardware aspect of fire prevention by the screen but also in the software aspect of evacuation guidance. In the case where this display is performed on a screen of a type in which the screen is lowered in cooperation with a fire detection sensor or the like, the display is not normally visible when the screen is rolled up, so that there is an advantage that there is no drawback in terms of interior decoration.

As described above, the roll screen of the present invention has an effect that it does not hinder human evacuation and firefighting activities while functioning as a fire protection screen.

[0027]

The roll screen of the present invention can function as a fire protection screen in the extended state, and the raw cloth with the weight bar and the slit can be easily opened in a double-leafed state and passed through by a person in the extended state. Can be forgiven, and the effect of not hindering evacuation and preventing firefighting activities can be obtained.

Moreover, since the divided weight bars are connected in the longitudinal direction by the detachable connecting means, it is possible to obtain an effect that the weight bar can be used in a state of exhibiting the appearance of a general non-divided roll screen. In addition, the mounting location can be used regardless of the window, entrance, etc.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the entire structure of a roll screen with a decorative cover 1 removed.

FIG. 2 is a front view showing the raw fabric 2 of the roll screen in a stretched state lowered to the floor (the decorative cover 1 is not shown).

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Makeup cover, 2 ... Raw cloth, 3 ... Set frame, 4 ... Winding shaft, 5 ... Motor, 6 ...
Weight bar, 7: magnet, 21: slit, 3
1 ... bracket.

Claims (1)

(57) [Claims] 1. A take-up shaft, a raw cloth one end of which is connected to the take-up shaft so as to be wound and unwound, and assembled to the other end of the raw cloth so as to maintain the raw cloth in an extended state. A roll screen provided with a weight bar, wherein the raw cloth is made of a non-combustible or flame-retardant sheet, the weight bar is divided into two or more in the longitudinal direction, and Connecting means that is provided with a vertical slit continuous to
A roll screen characterized by being connected in a longitudinal direction by a roll screen.