JP7349938B2 - Fire protection switchgear - Google Patents

Description

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

In order to prevent human injury and the spread of fire in the event of a fire, it is required to install fire prevention equipment at the openings of buildings. In recent years, as such fire prevention equipment, fire prevention opening/closing devices equipped with a flexible sheet-like screen that can be rolled up and unrolled along a frame provided on the inner peripheral surface of the opening of a building have been used. There is.

For example, Japanese Patent Laid-Open No. 2017-096027 discloses a left and right guide frame and a lower frame, a sheet-like opening/closing body (screen) that is wound up and unwound along the left and right guide frames, and a winding body that winds up the opening/closing body. A fire prevention opening/closing device is disclosed that includes a device and frame reinforcing members that support left and right guide frames and a lower frame, respectively.

In the fire prevention opening/closing device described in Patent Document 1, the rigidity of the left and right guide frames and the lower frame can be increased by the frame reinforcing material. Therefore, due to heat stretching of the left and right guide frames and bottom frame of the fire prevention screen that occurs during a fire, warpage occurs between the fixing screws in the longitudinal direction of the member, and the gap that occurs between the left and right guide frames and bottom frame and the building opening. This prevents flames from penetrating indoors and outdoors.

JP2017-096027A

In the event of a fire, it is necessary to consider not only the left and right guide frames and the bottom frame, but also the heat elongation of the frame reinforcement. If hot elongation escape is not ensured, the elongation of the frame reinforcing material will not be able to escape toward the end in the longitudinal direction, and there is a risk that the frame reinforcing material itself may be deformed. In order to suppress the occurrence of problems in conventional fire prevention switchgears equipped with such frame reinforcing materials, a space is secured where no frame reinforcing materials are provided in a part of the joint between the left and right guide frames and the lower frame. As a result, the development of a fire prevention switchgear that can absorb the heat elongation of the frame reinforcing material is underway.

By providing such a space, it is possible to suppress problems caused by hot elongation of the frame reinforcing material. However, since no frame reinforcing material is provided in the space that absorbs heat elongation, there is a risk that flames may penetrate indoors and outdoors through this space, and there is a need to further improve the fireproof performance.

The present invention has been made to solve these problems, and while securing a space to absorb the heat elongation of the guide frame reinforcing material, it also prevents flame from penetrating indoors and outdoors through this space. It is an object of the present invention to provide a fire prevention opening/closing device that can simultaneously improve the rigidity of the left and right guide frames and the lower frame and improve the fireproof performance by suppressing the amount of heat.

A fire prevention opening/closing device of the present invention for solving the above problems includes a left guide frame, a right guide frame, a lower frame, a width direction end portion is surrounded by the left guide frame and the right guide frame, and the left A guide frame, a screen that is wound up and unwound along the right guide frame, a storage box that houses the screen, a guide frame reinforcing member that supports the left and right guide frames from inside, and a screen that supports the bottom frame. A lower frame reinforcing member supported from the inside is provided, and a heated foaming material is provided in a space facing the longitudinal end of the lower frame reinforcing member and the longitudinal end of the guide frame reinforcing member.

In the fire prevention switchgear of the present invention, it is preferable that the heated foaming material is provided on the lower end side in the longitudinal direction of the guide frame, and the lower frame and the outdoor inner surface and/or the indoor inner surface of the left and right guide frames. It is preferable to provide the heating foaming material between the two.

According to the present invention, by securing a space for absorbing the heat elongation of the guide frame reinforcing material and suppressing flame from penetrating indoors and outdoors through this space, the left and right guide frames and the lower frame It is possible to provide a fire prevention switchgear that is capable of both improving the rigidity and improving fireproof performance.

A central vertical cross-sectional view of a fire prevention switchgear according to an embodiment Same cross-sectional view Enlarged view of main parts of screen Enlarged view of the bottom frame Enlarged view of the main parts of the lower end of the right guide frame in the longitudinal direction

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, in this specification, common terms will be used for common configurations, they will be illustrated substantially the same in each figure, detailed explanation will be omitted, and the same reference numerals will be used as necessary.

FIG. 1 is a central vertical cross-sectional view of the fire prevention switchgear according to this embodiment, and FIG. 2 is a cross-sectional view thereof. The fire prevention switchgear 1 of this embodiment is disposed inside or at an opening in a building or structure such as a house, building, warehouse, factory, underground mall, tunnel, or vehicle loading platform, and can be used to open and close the opening, or to open and close the opening. Although it can be applied as a shutter device for partitioning or opening an internal space, an example of a window shutter device that is attached to the indoor side of a sash window in an opening of a building will be described as a particularly preferred embodiment.

The fire prevention opening/closing device 1 of this embodiment includes a right guide frame 2, a left guide frame 3, a lower frame 4, a screen 5, and a storage box 6, as shown in FIGS. 1 and 2.

The fire prevention opening/closing device 1 is attached to the inner circumferential surface 7a of an opening 7, such as a window or doorway, provided on the outer wall of a building. In this embodiment, the inner circumferential surface 7a is constituted by a frame 8 attached to the opening 7, like a wooden or RC frame. Note that the fire prevention switchgear 1 may be attached directly to the opening 7 without attaching the frame 8.

Since the right guide frame 2 and the left guide frame 3 have substantially the same configuration, the configuration example of the right guide frame 2 will be described, and the description of the configuration example of the left guide frame 3 will be omitted. In this embodiment, the right guide frame 2 includes an outer guide part 21 and an inner guide part 22, as shown in FIG. The outer guide portion 21 is elongated and has a substantially U-shaped cross section. Specifically, the outer guide portion 21 includes a first wall portion 21a that contacts the inner circumferential surface 7a as shown in FIG. 2, a second wall portion 21b located on the outdoor side of the opening 7, and an opening. 7, and a pair of fourth walls 21d facing the left guide frame 3. In the right guide frame 2 of this embodiment, the first wall 21a, the second wall 21b, and the third wall 21c are connected to the lower frame 4 when the fire prevention switchgear 1 is attached to the opening 7. The end portion in the longitudinal direction of the side is configured to abut against the inner circumferential surface 7a to which the lower frame 4 is attached. The pair of fourth walls 21d are cut out at the longitudinal ends on the lower frame side, and when the fire prevention switchgear 1 is attached to the opening 7, the longitudinal ends on the lower frame 4 side are cut out. is configured to abut on an upper surface 44a of an upper portion 44 of the lower frame 4, which will be described later.

A pair of outdoor side protruding wall parts 21e are formed at the outdoor end of the first wall part 21a. The pair of outdoor side protruding wall portions 21e have bent portions 21f at their tips that are bent toward each other. In the outer guide portion 21, an outdoor storage portion 21g is formed by a first wall portion 21a, a pair of outdoor side protruding wall portions 21e, and a bent portion 21f.

A pair of indoor side protruding wall parts 21h are formed at the indoor end of the first wall part 21a. The pair of indoor side protruding wall portions 21h have bent portions 21i at their tips that are bent toward each other. In the outer guide portion 21, an indoor storage portion 21j is formed by a first wall portion 21a, a pair of indoor side protruding wall portions 21h, and a bent portion 21i.

A pair of protruding wall parts 21k are formed in the first wall part 21a between a pair of outdoor protruding wall parts 21e and a pair of indoor protruding wall parts 21h.

An opening 21l is formed between the pair of fourth walls 21d. A pair of protrusions 21m protruding toward the first wall 21a are formed at the ends of the pair of fourth walls 21d on the opening 21l side. The end of the bottom frame 11 to which the front edge of the screen 5 is attached enters into the opening 21l, and when the screen 5 is wound up and unwound, the bottom frame 11 moves up and down while being guided by the pair of protrusions 21m. Slide to .

In this embodiment, a guide frame reinforcing member 23 is provided on the inner periphery of the outer guide portion 21. In this embodiment, the guide frame reinforcing member 23 is provided from the upper end in the longitudinal direction of the right guide frame 2 to an imaginary line position on the upper surface 44a of the upper part 44 where the recess 42 of the lower frame 4, which will be described later, is formed. . In other words, in this embodiment, the guide frame reinforcing material 23 is not provided below the upper surface 44a of the lower frame 4. The guide frame reinforcing member 23 of this embodiment is formed along the entire inner circumference of the outer guide portion 21 in the longitudinal direction, as shown in FIG. 2 .

By supporting the outer guide part 21 from inside by the guide frame reinforcing material 23, it is possible to give the outer guide part 21 the rigidity to withstand deformation due to external force caused by a fire, and to prevent the outer guide part 21 from being damaged indoors or outdoors. Can prevent flame penetration.

The outer guide portion 21 can be made of, for example, a molded product of aluminum, and the guide frame reinforcing member 23 can be made of, for example, a molded product of steel. In this embodiment, the outer guide portion 21 and the guide frame reinforcing member 23 are fastened together to the frame 8 with screws, as shown in FIG. 2 .

A heated foam material 9 serving as a guide frame opening side heated foam material 9c is accommodated in the outdoor storage portion 21g over both ends thereof. The heated foam material 9 is fixed to the outdoor housing portion 21g via adhesive, double-sided tape, or the like. The heated foam material 9 expands when heated and exhibits fireproofing and fireproofing performance. Therefore, even if a gap occurs between the right guide frame 2 and the inner circumferential surface 7a in the event of a fire, the heated foam material 9 closes the gap to prevent flames from penetrating indoors and outdoors. be able to. As the heat foaming material 9, for example, Fiblock (registered trademark) manufactured by Sekisui Chemical Co., Ltd. can be used.

The first wall portion 21a of the outer guide portion 21 is fixed to the inner circumferential surface 7a, and the outdoor housing portion 21g is closed by the inner circumferential surface 7a, so that the heated foam material 9 is connected to the inner circumferential surface 7a and the outer guide portion 21a. 21. Therefore, due to age-related deterioration of the adhesive, etc., or melting of the adhesive (approximately 120°C) before the heating foaming material 9 starts expanding (approximately 200°C), the heating foaming material 9 may peel off from the outdoor housing portion 21g. Also, the mounting position is maintained, and the function of the heating foam material 9 is prevented from being impaired.

In this embodiment, a gap concealing material 10 such as an elastic material is disposed in the indoor housing part 21j where the heated foam material 9 is not disposed, and a gap concealing material 10 such as an elastic material is disposed between the inner circumferential surface 7a and the first wall part 21a. The leakage of light from the outdoor side due to the gaps is suppressed.

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

The lower frame 4 can be made of, for example, a molded aluminum product, and is a long piece fixed between the lower ends of the right guide frame 2 and the left guide frame 3, as shown in FIGS. 1 and 2. The cross-sectional shape is formed into a substantially C-shape. The back surface 41a of the bottom part 41 of the bottom frame 4 is a mounting surface with the inner circumferential surface 7a, and the upper part 44 on the side opposite to the bottom part 41 has a lower end of the bottom frame 11 provided at the lower end of the screen 5, which will be described later. A recessed portion 42 into which the material enters is provided.

In particular, in this embodiment, the lower frame 4 is configured so that both sides of the longitudinal end portion 4E do not come into contact with the right guide frame 2 and the left guide frame 3. In other words, the lower frame 4 of this embodiment is configured such that there is a space between both sides of the longitudinal end 4E and the right guide frame 2 and the left guide frame 3.

The lower frame 4 of this embodiment is provided with a lower frame reinforcing material 43. The lower frame reinforcing material 43 can be a molded product made of stainless steel or steel, and in this embodiment, it is in contact with the bottom 41 of the lower frame 4 over the entire length of the lower frame 4, and is in contact with the recess 42. The lower frame 4 is supported from inside the lower frame 4. By providing this lower frame reinforcing material 43, the rigidity of the lower frame 4 is increased, and even if flames from a fire reach the lower frame 4, it is possible to prevent the flame from penetrating indoors and outdoors. It has become.

Specifically, in the longitudinal cross section of the bottom frame reinforcing material 43 of the present embodiment, the bottom part 43a contacts the bottom part 41 of the bottom frame 4, and the top part 44 of the bottom frame 4 extends from both ends of the bottom part 43a. It is formed from a pair of upright portions 43b extending toward the room, and a pair of bent portions 43c extending in the indoor/outdoor direction from the end of the pair of upright portions 43b on the upper 44 side of the lower frame 4.

The bottom portion 43a has a dimension equal to the distance between a pair of outdoor protruding wall portions 41e and a pair of indoor protruding wall portions 41h of the lower frame 4, which will be described later, in the longitudinal cross section of the lower frame reinforcing member 43. The bottom portion of the bottom frame 11 comes into contact with this bottom portion 43a when the screen 5 is closed. The pair of bent portions 43c are configured parallel to the bottom portion 43a, and the indoor end and the outdoor end are respectively covered by the upper portion 44 of the lower frame 4.

In particular, in this embodiment, the lower frame reinforcing material 43 is formed over the entire length of the lower frame 4, so that both sides of the longitudinal end 43E of the lower frame reinforcing material 43 are formed on the right guide frame 2 and the left side. It is configured so as not to come into contact with the guide frame 3. In other words, the lower frame reinforcing member 43 of this embodiment is configured such that there is a space between both sides of the longitudinal end portion 43E and the right guide frame 2 and the left guide frame 3.

As described above, in this embodiment, the guide frame reinforcing material 23 is not provided below the upper surface 44a of the lower frame 4, and the right guide frame 2 and the right guide frame 2 are provided on both sides of the longitudinal end 43E of the lower frame 4. A lower frame reinforcing member 43 is not provided between the left guide frame 3 and the left guide frame 3. That is, in this embodiment, there is a space where neither the guide frame reinforcing material 23 nor the lower frame reinforcing material 43 is provided in a part of the joint portion between the right guide frame 2 and the left guide frame 3 and the lower frame 4, i.e. A space S is secured in which no frame reinforcing material is provided. A longitudinal end 43E of the lower frame reinforcing member 43 and a longitudinal end 23E of the guide frame reinforcing member 23 face this space S.

The fire prevention opening/closing device 1 of this embodiment has a heated foam material 9 in this space S as a heated foam material 9a on the lower end side of the guide frame. Specifically, in this embodiment, the heated foam material 9 is fixed to the inner surface of the first wall portion 21a of the outer guide portion 21 of the right guide frame 2 via adhesive, double-sided tape, or the like. In this embodiment, the heated foaming material 9 is fixed to the longitudinal end portion (lower end side in the longitudinal direction) of the lower frame 4 side of the first wall portion 21a, and is fixed to the longitudinal end portion 23E of the guide frame reinforcing material 23. and are fixed at intervals. Moreover, in this embodiment, the heating foaming material 9 is fixed to the second wall portion 21b and the third wall portion 21c with a space therebetween. Furthermore, in this embodiment, the heated foam material 9 faces the longitudinal end portion 43E of the lower frame reinforcing material 43, and has a size that covers almost the entirety thereof.

In the fire prevention switchgear 1 of this embodiment, in the event of a fire, the heated foam material 9 expands and closes the space S where the frame reinforcing material is not provided, allowing flames to penetrate indoors and outdoors via the space S. can be prevented from happening.

In the lower frame 4 of this embodiment, grooves 45 are formed on the indoor side and outdoor side surfaces, respectively, to which the latch 12 attached to the bottom frame 11 of the screen 5 is engaged in order to maintain the closed state of the screen 5. has been done. The fire prevention opening/closing device 1 of this embodiment also has a heating foam material 9 in this groove portion 45 as the heating foam material 9b on the indoor/outdoor side of the lower frame. Specifically, in this embodiment, the heated foaming material 9 is fixed inside the groove 45 via adhesive, double-sided tape, etc. on both sides of the longitudinal direction end portion 4E of the lower frame.

As described above, the fire prevention switchgear 1 of the present embodiment has the lower frame 4, the inner surface of the second wall portion 21b of the right guide frame 2 (and the left guide frame 3), and the inner surface of the third wall portion 21c. , that is, between the lower frame 4 and the outdoor inner surface and indoor inner surface of the right guide frame 2 (and left guide frame 3), a heated foaming material 9 is provided. In other words, in this embodiment, the heated foaming material 9 is hidden by the right guide frame 2 (and left guide frame 3), so that the aesthetic appearance of the opening/closing device is not impaired. In addition, in the event of a fire, the surface temperature of not only the bottom frame 4 but also the right guide frame 2 (and left guide frame 3) is detected, so the surface temperature of one of the bottom frame and the right guide frame 2 (and left guide frame 3) is detected. Even if the temperature does not rise, foaming can occur due to an increase in the other surface temperature.

In the fire prevention switchgear 1 of this embodiment, the heated foam material 9 expands in the event of a fire, and the outdoor inner surface and indoor inner surface of the lower frame 4 and the right guide frame 2 (and left guide frame 3) By closing the gap, it is possible to prevent flame from penetrating indoors and outdoors via the space between the lower frame 4 and the outdoor inner surface and the indoor inner surface of the right guide frame 2 (and left guide frame 3). can.

Similar to the first wall 21a of the right guide frame 2, a pair of outdoor protruding wall parts 41e having a bent part 41f at the tip are formed on the back surface 41a, thereby forming an outdoor storage part 41g. . Further, a pair of indoor side protruding wall portions 41h having bent portions 41i at their tips are formed on the back surface 41a, thereby forming an indoor side storage portion 41j.

Similar to the outdoor housing section 21g, the outdoor housing section 41g accommodates the heated foam material 9 as the lower frame opening side heated foam material 9d across both ends thereof. The back surface 41a of the lower frame 4 is fixed to the inner circumferential surface 7a, and the outdoor housing section 41g is closed by the inner circumferential surface 7a, so that the heated foam material 9 is placed between the inner circumferential surface 7a and the outdoor housing section 41g. It is stored in Therefore, due to age-related deterioration of the adhesive, etc., and melting of the adhesive (approximately 120°C) before the heating foaming material 9 starts expanding (approximately 200°C), the heating foaming material 9 may peel off from the outdoor housing portion 41g. Also, the mounting position is maintained, and the function of the heating foam material 9 is prevented from being impaired.

The gap concealing material 10 is accommodated in the indoor accommodation section 41j, similarly to the indoor accommodation section 21j. This gap concealing material 10 suppresses light leakage from the outdoor side due to the gap generated between the inner circumferential surface 7a and the back surface 41a.

In this embodiment, the heated foaming material 9 is placed in the outdoor housing part 21g of the right guide frame 2 (and left guide frame 3) and the outdoor housing part 41g of the lower frame 4, As long as it is on the inner circumferential surface 7a) side, the position, range, and number of the heating foaming materials 9 are not limited, and for example, they may be placed in the indoor housing part 21j and the indoor housing part 41j, or they may be placed in the outdoor housing part 21j and the indoor housing part 41j. It may be arranged both in the section 21g and the outdoor storage section 41g, as well as in the indoor storage section 21j and the indoor storage section 41j. Further, the heated foaming material 9 may be arranged at the center of the first wall portion 21a and the back surface 41a.

The screen 5 is fireproof and is made of glass cloth, silica cloth, or these cloths coated or impregnated with fireproof paint. As shown in FIG. 3, a pair of vertical sides 5a of this screen 5 are formed with a retaining portion 51 made of thread made of a noncombustible material. The retaining part 51 is located inside the inner guide part 22. This retaining part 51 prevents the vertical side 5a from slipping out of the slit 22a of the inner guide part 22 when the screen 5 receives a bending force, and is formed wider than the slit 22a. be.

For example, a thread made of stainless steel can be used as the thread made of a noncombustible material constituting the retaining part 51, and in this embodiment, the retaining part 51 is composed of a thread made of stainless steel. The thread can have a diameter of, for example, 0.35 mm to 1.06 mm, and the retaining portion 51 of this embodiment is made of a stainless steel thread with a thickness of 0.35 mm. In particular, in this embodiment, the retaining portion 51 is configured to have a substantially spherical shape by sewing stainless steel thread multiple times along the vertical side 5a.

In this embodiment, a slip-off prevention auxiliary portion 52 made of a noncombustible material is formed at the widthwise end portion of the screen 5 . Particularly in this embodiment, the retaining auxiliary parts 52 are formed at regular intervals in the height direction of the screen 5 (the longitudinal direction of the right guide frame 2 and the left guide frame 3) so as to overlap with the retaining parts 51. For example, a stapler needle can be used as such a pull-out prevention auxiliary part 52. In this embodiment, a stainless steel stapler needle with a needle thickness of 0.5 mm, a needle foot length of 6.0 mm, and a width of 11.6 mm is used. In addition to stainless steel, steel, aluminum, copper, etc. can be used as the material for the stapler needle. Further, the material of the staples of the stapler may be the same as or different from the material of the thread made of a noncombustible material constituting the retaining portion 51.

In the screen 5 of this embodiment, a metal plate 53 made of a noncombustible material is provided at the lower end. Specifically, in the screen 5 of this embodiment, an aluminum plate 53 is formed along the lower end 5b of the screen 5 over the entire width of the screen 5. This aluminum plate 53 is attached to the screen 5 with double-sided tape.

The screen 5 of this embodiment is also provided with a retaining part 51 made of thread made of a noncombustible material at the lower end. Specifically, along the lower end of the plate 53 made of a noncombustible material, a retaining portion 51 made of thread made of a noncombustible material is provided.

A bottom frame 11 is attached to the screen 5 of this embodiment so as to cover the lower end. In this embodiment, the bottom frame 11 is screwed to the screen 5 using an aluminum plate 53 as a seat. In particular, in this embodiment, the bottom frame 11 is composed of an indoor side member and an outdoor side member, and is screwed to the outdoor side member with the lower end of the screen 5 sandwiched between the aluminum plate 53 as a seat and then screwed to the outdoor side member. , the indoor side members are fitted and screwed together. Therefore, the bottom frame 11 is attached so that the aluminum plate 53 and the retaining part 51 provided at the lower end are entirely 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 bottom frame 4, the closed state of the screen 5 can be maintained.

As shown in FIG. 1, the housing box 6 consists of a main body 60 and a base material 61 as a reinforcing material for the housing box to which the main body 60 is attached.A drum 62 to which the base end side of the screen 5 is attached is housed in the main body 60. The drum 62 is equipped with a mechanism that can take up and unwind the screen 5 and temporarily stop it at any position during the winding.

The base material 61 is made of steel and has a thick wall to increase the rigidity of the storage box 6.

Between the box 6 and the inner circumferential surface 7a, in consideration of the possibility that a gap may be created in the event of a fire, a housing section is formed at the portion where the main body 60 contacts the inner circumferential surface 7a, and a heated foam material is placed inside the housing section. Good too.

In the fire prevention opening/closing device 1 of this embodiment, a retaining portion 51 made of thread made of a noncombustible material is formed at the widthwise end portion of the screen 5. Therefore, even if the sheet-shaped screen 5 is provided with the retaining part 51 that prevents it from coming off from the right guide frame 2 and the left guide frame 3, the retaining part 51 is located on the widthwise end side of the screen 5 when the screen 5 is wound up. Even if the windings 51 overlap in the radial direction, the winding diameter on the end portion side in the width direction can be prevented from increasing. Therefore, in the fire prevention switchgear 1 of the above embodiment, the operability of the fire prevention switchgear is reduced while suppressing the increase in the size of the storage box 6, restrictions on the place where it can be installed, and deterioration of the aesthetic appearance of the opening of the building. can be suppressed.

Further, in the fire protection switchgear 1 of this embodiment, a metal plate 53 made of a noncombustible material is provided at the lower end of the screen 5. The plate 53 made of such a non-combustible material not only functions to protect the lower end of the screen 5 from fire, but also serves 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 embodiment described above, 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.

Furthermore, in the fire prevention opening/closing device 1 of the present embodiment, a retaining portion 51 made of a thread made of a noncombustible material is formed at the lower end of the screen 5. Therefore, the lower end portion of the sheet-like screen 5 can be prevented from coming off from the bottom frame 11.

Furthermore, in the fire prevention switchgear 1 of the present embodiment, the removal prevention auxiliary part 52 made of a noncombustible material is formed at the widthwise end of the screen 5, so that the right guide frame 52 is attached to the screen 5 during a fire. And to prevent the sheet-like screen 5 from coming off from the right guide frame 2 and the left guide frame 3 even if the left guide frame 3 is deformed or a large force is applied, such as when a child presses the screen 5 strongly during normal times. I can do it.

In the above embodiment, a stapler is used as the pull-out prevention auxiliary part 52, but if it is possible to prevent the screen 5 from coming off even when a large force is applied, the pull-out prevention auxiliary part 52 is limited to a stapler. In addition, if it is possible to prevent the screen 5 from coming off without providing the retaining auxiliary part 52, the retaining auxiliary part 52 may not be provided.

In the above embodiment, only the retaining part made of thread made of non-combustible material is formed as the retaining part, but within the scope of the present invention, other than the retaining part made of thread made of non-combustible material. A retaining portion may be formed.

In the above embodiment, the heated foamed material 9 as the heated foamed material 9a on the lower end of the guide frame is provided at the end of the first wall portion 21a on the lower frame 4 side. It can be provided in any member and position as long as it is a space where the longitudinal end 43E of the frame reinforcing member 43 and the longitudinal end 23E of the guide frame reinforcing member 23 face each other.

In the above embodiment, the heated foamed material 9 as the lower frame indoor/outdoor side heated foamed material 9b is provided in the groove 45 of the lower frame 4, but the heated foamed material 9 is attached to the lower frame and the left and right guides. It can be attached to any member or position between the outdoor inner surface and/or the indoor inner surface of the frame.

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

According to the present invention, by securing a space for absorbing the heat elongation of the guide frame reinforcing material and suppressing flame from penetrating indoors and outdoors through this space, the left and right guide frames and the lower frame It is possible to provide a fire prevention switchgear that can simultaneously improve the rigidity and fireproof performance of the fire prevention switchgear.

1: Fire prevention opening/closing device 2: Right guide frame 21: Outside guide portion 21a: First wall portion 21b: Second wall portion 21c: Third wall portion 21d: A pair of fourth wall portions 21e: A pair of fourth wall portions Outdoor side protruding wall part 21f: Bent part 21g: Outdoor side storage part 21h: Pair of indoor side protruding wall parts 21i: Bent part 21j: Indoor side storage part 21k: Pair of protruding wall parts 21l: Opening part 21m: Pair of protruding parts Part 22: Inside guide part 22a: Slit 23: Guide frame reinforcement 3: Left guide frame 4: Lower frame 4E: Both ends 41: Bottom part 41a: Back side 41e: Pair of outdoor side protruding wall parts 41f: Bent part 41g: Outdoor side Storage part 41h: Pair of indoor side protruding wall parts 41i: Bent part 41j: Indoor side storage part
42: Recessed portion 43: Lower frame reinforcement 43a: Bottom portion 43b: A pair of standing portions 43c: A pair of bent portions 43E: Longitudinal end portion 44: Upper portion 44a: Top surface 45: Groove portion 5: Screen 5a: Vertical side 5b: Lower end 51: Removal prevention part 52: Removal prevention auxiliary part 53: Plate 6: Accommodation box 60: Main body 61: Base material 62: Drum 7: Opening part 7a: Inner peripheral surface 8: Frame 9: Heating foam material 9a: Heating on the lower end of the guide frame Foaming material 9b: Heating foaming material on the indoor/outdoor side of the lower frame 9c: Heating foaming material on the guide frame opening side 9d: Heating foaming material on the lower frame opening side 10: Gap hiding material 11: Bottom frame 12: Latch

Claims (3)

A left guide frame, a right guide frame and a lower frame,
A screen whose width direction end portion is surrounded by the left guide frame and the right guide frame, and which is wound up and rewound along the left guide frame and the right guide frame;
a housing box that houses the screen;
a guide frame reinforcing member that supports the left and right guide frames from inside;
and a lower frame reinforcing material that supports the lower frame from the inside,
A fire prevention opening/closing device characterized in that a heating foam material is provided in a space facing the longitudinal end of the lower frame reinforcing material and the longitudinal end of the guide frame reinforcing material. 2. The fire prevention opening/closing device according to claim 1, wherein the heated foam material is provided on the lower end side in the longitudinal direction of the guide frame. The fire prevention opening/closing device according to claim 1 or 2, wherein the heating foaming material is provided between the lower frame and the outdoor inner surface and/or the indoor inner surface of the left and right guide frame.

Images