JP2020204252A - Fireproof opening and closing device - Google Patents

Abstract

To provide a fireproof opening and closing device capable of preventing the reduction in operability of the fireproof opening and closing device as well as suppressing enlargement of a size of a housing box, limitation of a place to be installed, and disfigurement of an opening of a building by avoiding lengthening a roll diameter at an end side in a width direction of a screen even with a stopper for preventing the sheet screen from falling off from a guide frame.SOLUTION: A stopper 51, provided at an end part in a width direction surrounded by left and right guide frames, of a screen 5 whose end in the width direction is surrounded by the left and right guide frames and which is wound and unwound along the left and right guide frames is formed by a thread made of a fireproof material.SELECTED DRAWING: Figure 3

Description

The present invention relates to a switchgear, and more particularly to a fire prevention switchgear that can be used as a fire prevention facility.

In the event of a fire, it is required to install fire prevention equipment at the opening of the building in order to prevent human damage and the spread of fire that may occur. In recent years, as such fire protection equipment, a fire protection switchgear equipped with a flexible sheet-like screen that can be wound and rewound along a frame provided on the inner peripheral surface of an opening of a building has been used. There is.

For example, Japanese Patent Application Laid-Open No. 2017-21883 describes a fire prevention switchgear including a sheet-shaped switchgear (screen), a guide rail (guide frame) for guiding the switchgear, and a winding device for winding the switchgear. It is disclosed.

In a fire prevention switchgear that opens and closes an opening of a building with a sheet-shaped screen as described in Patent Document 1, if the sheet-shaped screen bends and the screen comes out of the guide rail, a flame is generated in the event of a fire. It penetrates indoors and outdoors, making it impossible to demonstrate fire protection performance. In the fire prevention switchgear of Patent Document 1,
Fire prevention performance is demonstrated by providing a dentition-shaped engager that protrudes in the thickness direction of the screen on the width direction end side of the screen, and by making this engager function as a retaining part that prevents the screen from coming off the guide rail. It prevents things that cannot be done. Further, in the fire prevention switchgear of Patent Document 1, by using a metal material as the fire resistant material constituting the engager, it is possible to prevent the engager from disappearing due to a fire and the retaining function from being lost.

JP-A-2017-218813

Although the dentition-shaped engaging element of Patent Document 1 functions sufficiently as a retaining portion, the size of the screen in the thickness direction is larger than that of the sheet-shaped screen. Therefore, in the winding state of the screen, the engaging elements overlap each other in the radial direction on the width direction end side of the screen, so that the winding diameter on the width direction end side is larger than the winding diameter of the other portion.

Therefore, in the fire prevention switchgear of Patent Document 1, the storage box for accommodating the screen may become extremely large in accordance with the winding diameter on the end side in the width direction in which the engaging element is provided.

Further, in the fire prevention switchgear in which the storage box is enlarged in this way, a large space is required for installation, which causes a problem that the place where the storage box can be installed is limited.

Further, by increasing the winding diameter on the end side in the width direction, the distance between the position where the storage box winds up and rewinds the screen and the position of the opening of the building or the position of the curtain or the like provided near the opening is large. Therefore, the sense of unity with other sheet-like members provided in the opening of the curtain or the like may be impaired, and the aesthetic appearance of the opening of the building may be impaired.

In addition, in the fire prevention switchgear of Patent Document 1, a large force is required for winding and rewinding the screen due to the load of a plurality of dentition-shaped engagers made of metal, and fire prevention is performed. There is also a problem that the operability of the switchgear is lowered.

The present invention has been made to solve the above problems, and even if a retaining portion for preventing the sheet-shaped screen from coming off from the guide frame is provided, the winding diameter on the widthwise end side of the screen becomes large. For fire prevention, it is possible to suppress the deterioration of the operability of the fire prevention switchgear while suppressing the increase in the size of the storage box, the limitation of the place where it can be installed, and the deterioration of the aesthetic appearance of the opening of the building. It is an object of the present invention to provide a switchgear.

In the fire prevention switchgear of the present invention for solving the above problems, the left guide frame, the right guide frame and the lower frame, and the widthwise end portion are surrounded by the left guide frame and the right guide frame, and the left A screen that is wound and rewound along the guide frame and the right guide frame, and a storage box that houses the screen are provided, and the widthwise end of the screen is composed of a thread made of a non-combustible material. It is characterized in that a retaining portion is formed.

In the fire prevention switchgear of the present invention, it is preferable that a metal plate made of a non-combustible material is provided at the lower end of the screen.

In the fire prevention switchgear of the present invention, it is preferable that a retaining portion made of a thread made of a non-combustible material is formed at the lower end portion of the screen.

In the fire prevention switchgear of the present invention, it is preferable that a retaining auxiliary portion made of a non-combustible material is formed at the widthwise end portion of the screen.

According to the present invention, even if a retaining portion for preventing the sheet-shaped screen from coming off from the guide frame is provided, the winding diameter on the widthwise end side of the screen is suppressed from becoming large, so that the storage box is large. It is possible to provide a fire prevention switchgear capable of suppressing a decrease in operability of a fire prevention switchgear while suppressing a decrease in the appearance of a building opening and a change in a place where it can be installed.

Central vertical sectional view of the fire prevention switchgear according to the embodiment Cross-sectional view Enlarged view of the main part of the screen Enlarged view of the bottom frame

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in this specification, a common term is used for a common structure, and it is shown substantially the same in each figure and a detailed description is omitted, and it is shown by the same reference numeral as necessary.

The fire prevention opening / closing device 1 of the present embodiment is arranged in an opening portion or an inside of a construction / structure such as a house, a building, a warehouse, a factory, an underground street, a tunnel, or a vehicle carrier, and opens / closes the opening portion or forms a skeleton. It can be applied as a shutter device for partitioning or opening an internal space, but as a particularly preferable embodiment, an example of a window shutter device mounted on the indoor side of a sash window in a building opening will be described.

As shown in FIGS. 1 and 2, the fire prevention switchgear 1 of the present embodiment includes a right guide frame 2, a left guide frame 3, a lower frame 4, a screen 5, and a storage box 6.

The fire prevention switchgear 1 is attached to the inner peripheral surface 7a of an opening 7 such as a window or an entrance / exit provided on an outer wall of a building. In the present embodiment, the inner peripheral surface 7a is formed by the frame 8 attached to the opening 7, as in the case of wooden fitting or RC fitting. The fire prevention switchgear 1 may be directly attached to the opening 7 without attaching the frame 8.

Since the right guide frame 2 and the left guide frame 3 are configured to be substantially the same, a configuration example of the right guide frame 2 will be described, and a description of the configuration example of the left guide frame 3 will be omitted. In the present embodiment, the right guide frame 2 includes an outer guide portion 21 and an inner guide portion 22 as shown in FIG. The outer guide portion 21 has a long shape, and its cross-sectional shape is formed in a substantially U shape. Specifically, the outer guide portion 21 has a first wall portion 21a that abuts on the inner peripheral surface 7a as shown in FIG. 2, a second wall portion 21b located on the outdoor side of the opening 7, and an opening. A third wall portion 21c located on the indoor side of No. 7 and a fourth wall portion 21d facing the left guide frame 3 are provided.

A pair of outdoor side protruding wall portions 21e are formed at the outdoor side end portion of the first wall portion 21a. The pair of outdoor side projecting wall portions 21e has a bent portion 21f at the tip, which is bent so as to approach each other. In the outer guide portion 21, the outdoor side accommodating portion 21g is formed by the first wall portion 21a, the pair of outdoor side protruding wall portions 21e, and the bent portion 21f.

A pair of indoor protruding wall portions 21h are formed at the indoor end of the first wall portion 21a. The pair of indoor projecting wall portions 21h has a bent portion 21i at the tip, which is bent so as to approach each other. In the outer guide portion 21, the indoor side accommodating portion 21j is formed by the first wall portion 21a, the pair of indoor side protruding wall portions 21h, and the bent portion 21i.

In the first wall portion 21a, a pair of protruding wall portions 21k are formed between the pair of outdoor side protruding wall portions 21e and the pair of indoor side protruding wall portions 21h.

An opening 21l is formed in the fourth wall portion 21d. At the end of the fourth wall portion 21d on the opening 21l side, a pair of projecting portions 21m projecting toward the first wall portion 21a side are formed. The end portion 11a of the bottom frame 11 for attaching the tip end side of the screen 5 is inserted into the opening 21l, and the bottom frame 11 is guided by the pair of protruding portions 21m when the screen 5 is wound and rewound. Slide up and down.

In the present embodiment, the guide frame reinforcing member 23 is provided on the inner circumference of the outer guide portion 21. The guide frame reinforcing member 23 is provided over the entire length of the right guide frame 2 in the longitudinal direction. As shown in FIG. 3, the guide frame reinforcing member 23 of the present embodiment is formed along the entire inner circumference of the outer guide portion 21 in a cross section perpendicular to the longitudinal direction.

Since the guide frame reinforcing member 23 supports the outer guide portion 21 from the inside, the outer guide portion 21 can be provided with rigidity to withstand deformation due to an external force caused by a fire, and the outer guide portion 21 can be provided from inside and outside. It is possible to prevent the penetration of flame.

The outer guide portion 21 may be, for example, an aluminum molded product, and the guide frame reinforcing member 23 may be, for example, a steel molded product. In the present embodiment, the outer guide portion 21 and the guide frame reinforcing member 23 are fastened together with the frame 8 by screws as shown in FIG.

The heated foam material 9 is accommodated in the outdoor side accommodating portion 21 g over both ends thereof. The heated foaming material 9 is fixed to the outdoor side accommodating portion 21 g via an adhesive, double-sided tape, or the like. The heated foaming material 9 expands when heated and exhibits fire resistance and fire prevention performance. Therefore, even if a gap is generated between the right guide frame 2 and the inner peripheral surface 7a in the event of a fire, the heated foaming material 9 closes the gap to prevent the flame from penetrating indoors and outdoors. be able to. As the heat foaming material 9, for example, Fiblock (registered trademark) of Sekisui Chemical Co., Ltd. can be used.

The first wall portion 21a of the outer guide portion 21 is fixed to the inner peripheral surface 7a, and the outdoor side accommodating portion 21g is closed by the inner peripheral surface 7a, so that the heated foam material 9 has the inner peripheral surface 7a and the outer guide. It is stored between the part 21 and the part 21. Therefore, the heated foaming material 9 is peeled off from the outdoor side accommodating portion 21 g due to aged deterioration of the adhesive or the like or melting of the adhesive or the like (about 120 ° C.) before the expansion of the heated foaming material 9 starts (about 200 ° C.). However, the mounting position is maintained, and it is suppressed that the function of the heated foaming material 9 is impaired.

In the present embodiment, a gap concealing material 10 such as an elastic material is arranged in the indoor side accommodating portion 21j in which the heated foaming material 9 is not arranged, and is generated between the inner peripheral surface 7a and the first wall portion 21a. Light leakage from the outdoor side due to the gap is suppressed.

The inner guide portion 22 can be, for example, an aluminum molded product, and as shown in FIGS. 2 and 3, a tubular shape provided with a slit 22a as a guide groove for sliding the vertical sides 5a of both edges of the screen 5. It is formed by the shape material of. In the inner guide portion 22 of the present embodiment, the slit 22a is a gap formed by fitting the outdoor side member to the indoor side member. The inner guide portion 22 is formed in a long shape along the outer guide portion 21, and is arranged at the lower end of the outer guide portion 21 in an independent state without being fixed to the outer guide portion 21 (. It is placed on the lower frame 4 (which was swallowed). That is, the inner guide portion 22 is housed inside the outer guide portion 21 so that a clearance is formed around all the side surfaces thereof.

The lower frame 4 can be, for example, an aluminum molded product, and has a long shape fixed between the lower ends of the right guide frame 2 and the left guide frame 3 as shown in FIG. It is formed in a C shape. The back surface 41a of the bottom portion 41 of the lower frame 4 is a mounting surface with the inner peripheral surface 7a, and a recess on the side facing the bottom portion 41 into which the lower end of the bottom frame 11 provided at the lower end of the screen 5 described later enters. 42 is provided.

The lower frame 4 of the present embodiment is provided with a lower frame reinforcing member 43. The lower frame reinforcing material 43 can be a molded product of stainless steel or steel, and is formed so as to abut on the bottom portion 41 of the lower frame 4 and along the recess 42 over the entire length of the lower frame 4. The lower frame 4 is supported from the inside of the lower frame 4. By providing the lower frame reinforcing material 43, the rigidity of the lower frame 4 can be increased, and even if a flame in the event of a fire comes to the lower frame 4, the flame can be prevented from penetrating indoors and outdoors. It has become.

Similar to the first wall portion 21a of the right guide frame 2, a pair of outdoor side projecting wall portions 41e having a bent portion 41f at the tip are formed on the back surface 41a, and an outdoor side accommodating portion 41g is formed. .. Further, on the back surface 41a, a pair of indoor side protruding wall portions 41h having a bent portion 41i at the tip are formed, and an indoor side accommodating portion 41j is formed.

Like the outdoor side accommodating portion 21g, the outdoor side accommodating portion 41g accommodates the heated foaming material 9 over both ends thereof. The back surface 41a of the lower frame 4 is fixed to the inner peripheral surface 7a, and the outdoor side accommodating portion 41g is closed by the inner peripheral surface 7a, so that the heated foam material 9 is placed between the inner peripheral surface 7a and the outdoor side accommodating portion 41g. It is stored in. Therefore, the heated foaming material 9 is peeled off from the outdoor side accommodating portion 41 g due to aged deterioration of the adhesive or the like or melting of the adhesive or the like (about 120 ° C.) before the expansion of the heated foaming material 9 starts (about 200 ° C.). However, the mounting position is maintained, and it is suppressed that the function of the heated foaming material 9 is impaired.

Similar to the indoor side accommodating portion 21j, the gap concealing material 10 is accommodated in the indoor side accommodating portion 41j. The gap hiding material 10 suppresses light leakage from the outdoor side due to the gap generated between the inner peripheral surface 7a and the back surface 41a.

In the present embodiment, the heated foaming material 9 is arranged in the outdoor side accommodating portion 21 g and the outdoor side accommodating portion 41 g, but the arrangement position, range and number of the heated foam material 9 are not limited, for example, a shop. It may be arranged in the inner accommodating portion 21j and the indoor accommodating portion 41j, or may be arranged in both the outdoor accommodating portion 21g and the outdoor accommodating portion 41g and the indoor accommodating portion 21j and the indoor accommodating portion 41j. Further, the heated foaming material 9 may be arranged at the center of the first wall portion 21a and the back surface 41a.

Further, the heated foaming material 9 may be attached to the inside of the guide frame reinforcing material 23 and the lower frame reinforcing material 43. The heated foaming material 9 suppresses the penetration of the flame from the lower end of the right guide frame 2 indoors and outdoors in the event of a fire, and is not provided on the entire length of the right guide frame 2 in the longitudinal direction, but from the lower end thereof. It is provided up to (for example, about 1.5 cm).

The screen 5 is fireproof and is formed of a glass cloth or silica cloth, or a cloth coated with or impregnated with a fireproof paint. As shown in FIG. 3, a retaining portion 51 made of a thread made of a non-combustible material is formed on the pair of vertical sides 5a of the screen 5. The retaining portion 51 is located inside the inner guide portion 22. The retaining portion 51 prevents the vertical side 5a from coming out of the slit 22a of the inner guide portion 22 when the screen 5 receives a bending force.

As the thread made of the non-combustible material constituting the retaining portion 51, for example, a thread made of stainless steel can be used, and in the present embodiment, the retaining portion 51 is composed of the stainless steel thread. As the diameter of the thread, for example, one having a diameter of 0.35 mm to 1.06 mm can be used, and the retaining portion 51 of the present embodiment is made of a stainless steel thread having a thickness of 0.35 mm. In particular, in the present embodiment, the retaining portion 51 is formed to have a substantially spherical shape by laminating the sewing machine sewing of the stainless steel thread a plurality of times along the warp side 5a, and is formed to have a thickness that does not pass through the slit 22a.

In the present embodiment, a retaining auxiliary portion 52 made of a non-combustible material is formed at the widthwise end portion of the screen 5. In particular, in the present embodiment, the retaining assist portions 52 are formed at regular intervals in the height direction of the screen (longitudinal direction of the right guide frame 2 and the left guide frame 3) so as to overlap the retaining portions 51. For such a retaining assisting portion 52, for example, a staple for a stapler can be used. In this embodiment, a stainless steel stapler having a needle thickness of 0.5 mm, a needle foot length of 6.0 mm, and a width of 11.6 mm is used. As the material of the stapler for the stapler, steel, aluminum, copper or the like can be used in addition to stainless steel. Further, the material of the stapler of the stapler may be the same as or different from the material of the thread made of the non-combustible material constituting the retaining portion 51.

The screen 5 of the present embodiment is provided with a metal plate 53 made of a non-combustible material at the lower end. Specifically, in the screen 5 of the present embodiment, an aluminum plate 53 is formed along the lower end 5b of the screen 5 over the entire width direction of the screen 5. The aluminum plate 53 is attached to the screen 5 by double-sided tape.

The screen 5 of the present embodiment is also provided with a retaining portion 51 made of a thread made of a non-combustible material at the lower end portion. Specifically, a retaining portion 51 made of a thread made of a non-combustible material is provided along the lower end of a plate 53 made of a non-combustible material.

A bottom frame 11 is attached to the screen 5 of the present embodiment so as to cover the lower end portion. In the present embodiment, the bottom frame 11 is screwed to the screen 5 with the aluminum plate 53 as a seat. In particular, in the present embodiment, the bottom frame 11 is composed of an indoor side member and an outdoor side member, and after the aluminum plate 53 is used as a seat and screwed to the outdoor side member with the lower end portion of the screen 5 sandwiched between them. , The indoor side member is fitted and screwed. Therefore, the bottom frame 11 is attached so that the entire aluminum plate 53 and the retaining portion 51 provided at the lower end portion are covered by the bottom frame 11.

A latch 12 is attached to the bottom frame 11 of the screen 5, and by locking the latch 12 to the lower frame 4, the closed state by the screen 5 can be maintained.

As shown in FIG. 1, the storage box 6 includes a main body 60 and a base material 61 as a reinforcing material for the storage box to which the main body 60 is attached. The main body 60 houses a drum 62 to which the base end side of the screen 5 is attached. The drum 62 has a mechanism for winding and rewinding the screen 5 and temporarily stopping the screen 5 at an arbitrary position on the way.

The base material 61 is made of steel and is thickly constructed to increase the rigidity of the storage box 6.

In consideration of the case where a gap is formed between the box 6 and the inner peripheral surface 7a in the event of a fire, an accommodating portion is formed in a portion where the main body 60 is in contact with the inner peripheral surface 7a, and a heated foaming material is arranged in the accommodating portion. May be good.

In the fire prevention switchgear 1 of the present embodiment, a retaining portion 51 made of a thread made of a non-combustible material is formed at the widthwise end portion of the screen 5. Therefore, even if the retaining portion 51 for preventing the sheet-shaped screen 5 from coming off from the right guide frame 2 and the left guide frame 3, the retaining portion 51 is provided on the widthwise end side of the screen in the wound state of the screen 5. Even if they overlap in the radial direction, it is possible to prevent the winding diameter on the end side in the width direction from becoming larger than that of the conventional engaging dentition-shaped engager. Therefore, in the fire prevention switchgear 1 of the above embodiment, the operability of the fire prevention switchgear is reduced while suppressing the enlargement of the storage box 6, the limitation of the place where it can be installed, and the deterioration of the aesthetic appearance of the opening of the building. Can be suppressed.

Further, in the fire prevention switchgear 1 of the present embodiment, a metal plate 53 made of a non-combustible material is provided at the lower end of the screen 5. The plate 53 made of such a non-combustible material not only exerts a function of protecting the lower end of the screen 5 from fire, but also uses the plate 53 made of a non-combustible material as a seat when screwing the bottom frame 11 to the screen 5. Can be used. Therefore, in the fire prevention switchgear 1 of the above embodiment, it is possible to simultaneously improve the protection function from fire and simplify the mounting structure for attaching the bottom frame 11 to the screen 5.

Further, in the fire prevention switchgear 1 of the present embodiment, a retaining portion 51 made of a thread made of a non-combustible material is formed at the lower end portion of the screen 5. Therefore, it is possible to prevent the lower end portion of the sheet-shaped screen 5 from coming off the bottom frame 11.

Further, in the fire prevention opening / closing device 1 of the present embodiment, since the retaining auxiliary portion 52 made of a non-combustible material is formed at the widthwise end portion of the screen 5, the right guide frame 2 in the event of a fire is formed on the screen 5. And to prevent the sheet-shaped screen 5 from coming off the right guide frame 2 and the left guide frame 3 even when the left guide frame 3 is deformed or a large force such as a child pressing the screen 5 strongly is applied at normal times. Can be done.

In the above embodiment, the retaining portion 51 is formed by laminating the sewing machine sewing of the stainless steel thread a plurality of times, but the formation of the retaining portion 51 is not limited to this method, and for example, other than the sewing machine. The retaining portion 51 may be formed by a sewing machine or hand sewing. Further, if it is possible to prevent the screen from coming off, it is not necessary to repeat sewing.

In the above embodiment, the stapler is used as the retaining assisting portion 52, but the retaining assisting portion 52 is limited to the stapler if it is possible to prevent the screen from coming off even when a large force is applied. Also, if it is possible to prevent the screen from coming off without providing the retaining assisting portion 52, it is not necessary to provide the retaining assisting portion 52.

In the above embodiment, only the retaining portion made of the thread made of the non-combustible material is formed as the retaining portion, but to the extent that the effect of the present invention is exhibited, the retaining portion other than the retaining portion made of the thread made of the non-combustible material is formed. A retaining portion may be formed.

The present invention is not limited to the embodiments described above, and many modifications can be made by persons having ordinary knowledge in the art within the technical idea of the present invention. For example, the screen may not only slide up and down, but may also slide left and right.

According to the present invention, even if a retaining portion for preventing the sheet-shaped screen from coming off from the guide frame is provided, the winding diameter on the widthwise end side of the screen is suppressed from becoming large, so that the storage box is large. It is possible to provide a fire prevention switchgear capable of suppressing a decrease in operability of a fire prevention switchgear while suppressing a decrease in the appearance of a building opening and a change in a place where it can be installed.

1: Fire prevention switchgear 2: Right guide frame 21: Outer guide part 21a: First wall part 21b: Second wall part 21c: Third wall part 21d: Fourth wall part 21e: Pair of outdoor sides Protruding wall part 21f: Bent part 21g: Outdoor side accommodating part 21h: Pair of indoor side projecting wall part 21i: Bent part 21j: Indoor side accommodating part 21k: Pair of protruding wall part 21l: Opening 21m: Pair of protruding part 22 : Inner guide part 22a: Slit 23: Guide frame reinforcing material 3: Left guide frame 4: Lower frame 4a: End part 41: Bottom part 41a: Back surface 41e: Pair of outdoor side protruding wall parts 41f: Bent part 41g: Outdoor side accommodation Part 41h: A pair of outdoor side protruding wall parts 41i: Bent part 41j: Indoor side accommodating part
42: Recessed 43: Lower frame reinforcing material 5: Screen 5a: Vertical side 5b: Lower end 51: Retaining part 52: Retaining auxiliary part 53: Plate 6: Storage box 60: Main body 61: Base material 62: Drum 7: Opening 7a: Inner peripheral surface 8: Frame 9: Heated foam material 10: Gap concealing material 11: Bottom frame 12: Latch

Claims (3)

Left guide frame, right guide frame and lower frame,
A screen whose widthwise end is surrounded by the left guide frame and the right guide frame, and is wound and rewound along the left guide frame and the right guide frame.
A storage box for accommodating the screen and
A fire prevention switchgear, characterized in that a retaining portion made of a thread made of a non-combustible material is formed at the widthwise end portion of the screen. The fire prevention switchgear according to claim 1, wherein a metal plate made of a non-combustible material is provided at the lower end of the screen. The fire prevention switchgear according to claim 1 or 2, wherein a retaining portion made of a thread made of a non-combustible material is formed at the lower end portion of the screen.

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