JP2005113509A - Screen device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a screen device capable of preventing damage of a screen member due to shock to the utmost, facilitate replacement and maintenance of the screen member, and simplify a driving mechanism. <P>SOLUTION: In this screen device closing at least a part of an opening part 2 by the flexible screen member 7 whose upper end is fixed to an upper end of the opening part 2, belt-like magnets (flexible attraction means) 11 are provided in both left and right end parts of the screen member 7, both left and right end parts of the screen member 7 are detachably attracted onto a rail 3 erected on the left and right sides of the opening part 2 by the belt-like magnets 11, and a belt (a belt-like or linear flexible member) 16 attached to the screen member 7 is wound up to open the opening part 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a screen device that closes at least a part of an opening by a flexible screen material having an upper end fixed to the upper end of the opening.

  The screen device is provided in, for example, a disaster prevention section and functions as a fire / smoke shutter, but each time a person or an object passes, the screen material moves up and down along the rail to open and close the entrance / exit.

  By the way, in such a screen device, there is a type in which projections such as bolts are attached to the screen material in order to prevent the screen material from falling off the rails. If the external force is directly received, the screen material may be damaged.

  Moreover, in the conventional screen apparatus, since the both ends of the screen material are moved up and down in the rail, the replacement and maintenance of the screen material are not always easy.

  Therefore, as shown in FIG. 8, there is a proposal to attach flexible magnetic strips 111 to both ends of a screen material (reinforced curtain) 107 and magnetically attract the magnetic strips 111 to the left and right ferromagnetic side rails 103. (See Patent Document 1).

Japanese National Patent Publication No. 10-506158

  However, in the apparatus shown in FIG. 8, the rotation of the driving means 113 is transmitted to the end reel 121 via the first pulley 118, the connection cord 119 and the second pulley 120, and the end reel 121 is rotated. Since the opening 102 is opened and closed by moving the screen material 107 up and down while winding or unwinding the screen material 107, the driving mechanism becomes complicated and the end reel 121, which is a heavy object, is used. However, since it moves up and down together with the screen material 107, it is not easy to open and close the opening 102 at high speed.

  The present invention has been made in view of the above-mentioned problems, and the object of the present invention is to prevent the screen material from being damaged by an impact as much as possible, to facilitate the replacement and maintenance of the screen material and the simplification of the drive mechanism. An object of the present invention is to provide a screen device capable of achieving the above.

  In order to achieve the above object, the invention according to claim 1 is a screen device in which at least a part of the opening is closed by a flexible screen member whose upper end is fixed to the upper end of the opening. Flexible adsorbing means is provided, and by means of the adsorbing means, the left and right ends of the screen material are detachably adsorbed to rails erected on the left and right sides of the opening, and a strip-like or linear attachment attached to the screen material is possible. A flexible member is wound up so that the opening can be opened.

  According to a second aspect of the present invention, in the first aspect of the present invention, a winding shaft that is rotationally driven manually or electrically is provided on the upper portion of the opening, and the flexible member is wound by the winding shaft. Is rewinded to move the screen material up and down.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the screen material is divided to form a plurality of divided pieces in the left-right direction, and ends of adjacent divided pieces are overlapped with each other. The wrap portion is detachably adsorbed by a flexible adsorbing means.

  A fourth aspect of the invention is characterized in that, in the invention of any one of the first to third aspects, the attracting means is constituted by a belt-like flexible magnet.

  The invention according to claim 5 is the invention according to any one of claims 1 to 3, wherein the screen material is composed of silica cloth or glass cloth having high fire resistance.

  According to the first aspect of the present invention, since the left and right ends of the screen material are detachably adsorbed to the rails erected on the left and right of the opening by the flexible adsorbing means, an impact is applied thereto. In this case, since both ends of the screen material are detached from the rail, an excessive external force is not applied to the screen material, and as a result, the screen material is prevented from being damaged. Further, since the screen material is exposed to the outside of the rail and both ends thereof are not housed inside the rail as in the prior art, replacement and maintenance of the screen material are facilitated. Furthermore, since the opening can be opened by winding a strip-shaped or linear flexible member attached to the screen material, the opening can be opened and closed with a simple drive mechanism.

  According to the second aspect of the present invention, the flexible member is wound or unwound by the winding shaft provided at the upper portion of the opening, and the screen is moved up and down at high speed to open and close the opening. it can.

  According to the third aspect of the present invention, the screen material is divided into a plurality of portions and the ends of the adjacent divided pieces are overlapped, and the overlapped portion is detachably adsorbed by the flexible adsorbing means. The suction between the ends of the pieces can be easily released from any direction, and the screen device can be passed from both directions.

  According to the fourth aspect of the present invention, since the attracting means is composed of a strip-shaped flexible magnet, the flexible magnet is magnetically attached to the rail which is a magnetic body so that both ends of the screen material are airtight. While sealing, it deform | transforms with a screen material and permits opening and closing of the opening part by a screen material.

  According to invention of Claim 5, since the screen material was comprised with the silica cloth or glass cloth with high fire resistance, the said screen apparatus can be used for the use as a fire-proof / smoke-proof shutter.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

<Embodiment 1>
1A and 1B are perspective views of a screen device according to Embodiment 1 of the present invention, in which FIG. 1A shows a fully closed state, FIG. 1B shows a rising start state, and FIG. 1C shows a fully open state. 2 is a cross-sectional view taken along line AA in FIG. 1A, and FIG. 3 is a cross-sectional view taken along line BB in FIG.

  In FIG. 1, reference numeral 1 denotes a concrete wall of a building, for example, and a rectangular opening 2 as an entrance is formed in the concrete wall 1. And the rail 3 long in the up-down direction is erected vertically on both the left and right sides of the opening 2.

  Here, as shown in FIG. 2, each rail 3 is made of a steel channel material, which is a magnetic material, and a steel angle material 4 is also welded to the outer surface of the rail. Each of the rails 3 is formed of a plurality of anchor bolts 5 (only one is shown in FIG. 2) driven into the concrete wall 1 at an appropriate pitch in the vertical direction, and nuts 6 screwed into the anchor bolts 5. By fastening, the concrete wall 1 is fixed to one surface (surface on the near side in the figure) along the opening 2, and both rails 3 are erected vertically on both the left and right sides of the opening 2 as described above. Yes.

  By the way, the screen device according to the present invention includes a rectangular sheet-like flexible screen material 7 that opens and closes the opening 2 by moving up and down, and a winding mechanism 8 that winds the screen material 7. ing.

  Here, in the present embodiment, the screen material 7 is composed of silica cloth or glass cloth having high fire resistance, and the surface thereof is coated with a urethane-based or silicon-based fire-resistant paint as necessary. Has been.

  Thus, as shown in FIG. 3, the upper edge of the screen material 7 is fixed to the upper edge of the opening 2 of the wall (down wall) 1a of the concrete wall 1, and the opening 2 is an entrance / exit. When a person or an object does not pass through, as shown in FIG. 1A, the opening 2 is completely closed by hanging vertically.

  Here, in the vicinity of the lower end portion of the screen material 7, a metal flat bar 9 having high rigidity and fire resistance is attached horizontally in the width direction, and the lower end edge portion extending downward from the flat bar 9 of the screen material 7. Performs a sealing function in contact with the floor surface 10 when fully closed as shown in FIG. 1 (a), and hermetically seals the screen material 7 and the floor surface 10. A metal pipe or the like may be used instead of the flat bar 9.

  By the way, bendable belt-like magnets 11 as flexible adsorbing means are attached to one surface (surface facing the rail 3 (see FIG. 2)) of the left and right ends of the screen material 7 over the entire length in the vertical direction. In the fully closed state shown in FIG. 1A, the left and right strip magnets 11 are magnetically attracted to the left and right rails 3, respectively, so that the left and right ends of the screen material 7 are left and right over the entire length in the vertical direction. It adheres to the rail 3 in an airtight manner.

  On the other hand, the winding mechanism 8 is provided at the upper part of the opening 2 and includes a winding shaft 12 provided horizontally and an electric motor 13 capable of rotating forward and backward. Yes.

  Both ends of the winding shaft 12 are rotatably supported by left and right brackets 14 via bearings (not shown), and the electric motor 13 is provided at one end thereof. As shown in FIG. 3, the entire winding mechanism 8 is covered with a rectangular box-shaped case 15 (not shown in FIG. 1).

  By the way, as shown in FIGS. 1A and 1B, one end of a belt 16 as a belt-like flexible member is attached to the left and right sides of the screen member 7, and the other end of each belt 16 is , Extending upward and attached to the winding shaft 12 of the winding mechanism 8. In the present embodiment, the belt 16 is used as a flexible member for winding the screen material 7, but a linear wire, rope, chain, or the like may be used instead.

  Thus, in the fully closed state shown in FIG. 1A, when a person or an object passes through the opening 2 or when a signal from a fire alarm is received, the electric motor 13 is activated. Thus, the winding shaft 12 is rotationally driven. Then, since the two right and left belts 16 are wound around the winding shaft 12, the lower end of the screen material 7 is lifted by the left and right belts 16 as shown in FIGS. At this time, while the strip magnets 11 attached to both ends of the screen material 7 are detached from the rail 3, the screen material 7 is bent into a U shape and lifted upward from the lower end side.

  Then, when the left and right belts 16 are completely wound by the winding shaft 12, the screen material 7 is sequentially wound around the winding shaft 12 from the lower end side, and when all of them are wound, FIG. As shown in c), the opening 2 is fully opened, and a person or an object can freely pass through the opening 2.

  Conversely, in order to change from the fully open state shown in FIG. 1C to the fully closed state shown in FIG. 1A, the electric motor 13 is reversed or a brake (not shown) built in the electric motor 13 is applied. When the screen material 7 is released, it is unwound by the rewinding winding shaft 12, or the screen material 7 is lowered by its own weight (self-weight drop), so that the screen material 7 has its upper end in the same state as shown in FIG. The belt-shaped magnet 11 attached to both ends of the screen material 7 is brought into close contact with the left and right rails 3 in order.

  When the screen material 3 is completely lowered, as shown in FIG. 1A, the opening 2 is completely closed by the screen material 7, and both ends of the screen material 7 are left and right via the belt-shaped magnets 11. It adheres to the rail 3 in an airtight manner.

  By the way, the screen device according to the present embodiment is composed of a silica cloth or a glass cloth having a high fire resistance as described above, and therefore functions as a fire / smoke shutter, and usually, FIG. 1 (c). The screen device in the fully open state shown in FIG.

  That is, when a fire occurrence signal is received from a fire alarm (not shown), a brake (not shown) built in the electric motor 13 is released, and the screen material 7 is lowered by its own weight and opened as shown in FIG. Since the part 2 is completely closed, the screen device functions as a fire-proof shutter that prevents the spread of fire. Or as shown in FIG.1 (b), the screen material 7 falls to the middle and covers a part (upper half part) of the opening part 2, and the said screen apparatus functions as a smoke-proof shutter.

  In the present embodiment, the screen material 7 is wound up by the belt 16 by the electric motor 13, but may be manually operated.

  In this embodiment, the belt-like magnet 11 is used as the flexible attracting means provided at both ends of the screen material 7, but instead of this, a Velcro fastener (surface fastener), an adhesive force or electrostatic force is used. Etc. can be used.

  In the above, in the screen device according to the present embodiment, the screen material 7 is detachably attracted to the left and right rails 3 by the belt-like magnets 11 at the left and right ends thereof. Further, since both end portions of the screen material 7 are detached from the left and right rails 3, an excessive external force is not applied to the screen material 7, and as a result, the screen material 7 is prevented from being damaged.

  And since the flexible adsorption | suction means was comprised with the strip | belt-shaped magnet 11, this strip | belt-shaped magnet 11 adheres magnetically to the rail 3 which is a magnetic body, and seals both ends of the screen material 7 airtightly, and the screen material 7 At the same time, the opening and closing of the opening 2 by the screen material 7 is allowed.

  Further, since the screen material 7 is exposed to the outside of the rail 3 and both ends thereof are not housed inside the rail 3 as in the prior art, replacement and maintenance of the screen material 7 are facilitated.

  Further, since the belt 16 attached to the lower end of the screen material 7 is wound up by the winding mechanism 8 so that the opening 2 can be opened, the winding mechanism 8 is simplified, and a heavy object is provided at the lower end of the screen material 7. Therefore, the opening 2 can be quickly opened and closed by winding or lowering the screen material 7 at a high speed.

  In this embodiment, as shown in FIG. 3, the belt 16 and the screen material 7 are wound around the winding shaft 12 from the front side (right side in FIG. 3), but as shown in FIG. 4. If the belt 16 and the screen material 7 are wound around the winding shaft 12 from the back side (left side in FIG. 4), the folding width b of the screen material 7 is smaller than the folding width b ′ shown in FIG. b <b ′) can be suppressed.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS.

  5 is a perspective view of the screen device according to the present embodiment, FIG. 6 is a cross-sectional view taken along the line CC of FIG. 5, and FIG. 7 is a view similar to FIG. In these drawings, the same elements as those shown in FIGS. 1 to 4 are denoted by the same reference numerals, and description thereof will be omitted below.

  As shown in FIG. 5, the screen device according to the present embodiment divides the screen material 7 at the center in the width direction to form two right and left divided pieces 7A and 7B, and the end portions of these divided pieces 7A and 7B As shown in FIG. 6, the overlap portion is detachably attracted by belt-like magnets 17A and 17B, which are flexible attracting means, and the other configuration is the same as in the first embodiment. It is similar to that.

  Here, as shown in FIG. 6, the strip-shaped magnets 17A and 17B having opposite polarities are respectively attached to the opposing surfaces of the overlapping end portions of the left and right divided pieces 7A and 7B of the screen material 7. When these band-shaped magnets 17A and 17B are brought into close contact with each other, normally (that is, when a person or an object does not pass through the opening 2), as shown in FIG. It is closed.

  Thus, for example, when a person passes through the opening 2 from the near side to the far side during an emergency evacuation or the like, the person views the right divided piece 7B toward the far side toward the back side. If it is pushed in the direction of the arrow X in FIG. 7 (a) (the direction in which the right split piece 7B is separated), the strip magnet 17B of the right split piece 7B is easily detached from the other strip magnet 17A under the force in the same direction. . As a result, as shown in FIG. 7A, a person can easily open the right split piece 7B and pass through the opening 2 from the near side toward the far side. Then, after the person passes, the belt-like magnet 17B of the right split piece 7B is in close contact with the other belt-like magnet 17A as shown in FIG. 6, and therefore the opening 2 is formed by the screen material 7 as shown in FIG. It will be completely closed again.

  Similarly, when a person passes through the opening 2 from the back side toward the near side, the person moves the left divided piece 7A toward the near side toward the screen member 7 toward the near side as shown by an arrow in FIG. When pushed in the Y direction (the direction in which the left split piece 7A is separated), the strip magnet 17A of the left split piece 7A receives the force in the same direction and is easily detached from the other strip magnet 17B. As a result, as shown in FIG. 7B, a person can easily open the left split piece 7A and pass through the opening 2 from the back side toward the near side. Then, after the person passes, the strip-shaped magnet 17A of the left split piece 7A is in close contact with the other strip-shaped magnet 17B as shown in FIG. 6, and therefore the opening 2 is formed by the screen material 7 as shown in FIG. It will be completely closed again.

  As described above, in the present embodiment, the screen material 7 is divided into the left and right divided pieces 7A and 7B, the ends of the divided pieces 7A and 7B are overlapped, and the overlapped portion is flexible. Since the belt-like magnets 17A and 17B are detachably attracted, the end portions of the split pieces 7A and 7B can be easily released from any direction, and the opening 2 can be passed from both directions. It becomes. In addition, in this embodiment, it is needless to say that the same effect as that obtained in the first embodiment can be obtained.

  In this embodiment, the screen material 7 is divided into two, but it may be divided into three or more. In the present embodiment, the strip magnets 17A and 17B are used as the flexible attracting means for bringing the ends of the divided pieces 7A and 7B of the screen material 7 into close contact with each other. Fasteners), those using adhesive force or electrostatic force, and the like can be used.

  The screen device according to the present invention is used as a fire / smoke-proof shutter installed in a building such as an office building or a hotel, as well as an opening / closing shutter that opens and closes an opening of a factory, a warehouse, or the like with a flexible screen. It can be used for any application.

It is a perspective view of the screen apparatus which concerns on Embodiment 1 of this invention, (a) shows a fully-closed state, (b) shows a raise start state, (c) shows a fully open state, respectively. It is the sectional view on the AA line of Fig.1 (a). It is the BB sectional drawing of FIG.1 (b). It is a figure similar to FIG. 3 which shows the modification of Embodiment 1 of this invention. It is a perspective view (fully closed state) of the screen apparatus which concerns on Embodiment 2 of this invention. It is CC sectional view taken on the line of FIG. It is a figure similar to FIG. 6 which shows the opening | release operation | movement from both directions of a screen material. It is a perspective view of the conventional screen apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concrete wall 2 Opening part 3 Rail 4 Angle material 5 Anchor bolt 6 Nut 7 Screen material 7A, 7B Screen material division | segmentation piece 8 Winding mechanism 9 Flat bar 10 Floor surface 11 Band-shaped magnet (flexible adsorption means)
12 Winding shaft 13 Electric motor 14 Bracket 15 Case 16 Belt (flexible member)
17A, 17B Strip magnet (flexible adsorption means)

Claims (5)

In a screen device that closes at least a part of an opening by a flexible screen material having an upper end fixed to the upper end of the opening,
Flexible adsorbing means are provided at both left and right end portions of the screen material, and the adsorbing means detachably adsorbs the left and right end portions of the screen material to the rails erected on the left and right sides of the opening, and is attached to the screen material. A screen device characterized in that the opening can be opened by winding up a strip-shaped or linear flexible member.   A winding shaft that is rotated manually or electrically is provided above the opening, and the flexible member is wound or unwound by the winding shaft to move the screen material up and down. The screen device according to claim 1.   The screen material is divided to form a plurality of divided pieces in the left-right direction, the ends of adjacent divided pieces are overlapped, and the overlapped part is detachably adsorbed by a flexible adsorbing means. The screen device according to claim 1, wherein the screen device is characterized by the following.   The screen apparatus according to claim 1, wherein the attracting unit is configured by a strip-shaped flexible magnet.   The screen device according to any one of claims 1 to 3, wherein the screen material is made of silica cloth or glass cloth having high fire resistance.

Images