JP2008220453A - Smoke barrier and method of constructing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a smoke barrier using a lightweight panel, instead of a glass panel, which does not have a risk of being broken into pieces leading to a serious accident when the panel falls, and which can be easily attached to a ceiling. <P>SOLUTION: A rail 4 having a U-shaped cross section with the lower opening and which has a hanging hook 4a on one side surface of the inner wall, is attached to the ceiling 2, and a mounting member 8 with a locking hook 8a is provided at the panel 5 with a fiber-reinforced sheet 7 stretched over a frame body 6. The panel 5 is hung from the rail by locking the locking hook 8a of the panel with the hanging hook 4a of the rail, and the panel 5 is immovably restrained by mounting beats 14 and 15 made of an elastic material between either side face of the inner wall of the rail and the panel 5 to close the gap between the inner wall of the rail and the panel 5. In this way, the smoke barrier 1 is formed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a smoke-proof hanging wall provided on a ceiling of a building and a construction method thereof.

  Conventionally, a smoke-proof hanging wall is provided on the ceiling of a building such as an office building or a shopping mall. Usually, a glass plate is used for the smoke-proof hanging wall so as not to disturb the visual field. To attach the glass plate to the ceiling, make a hole in the glass plate and hang it from the ceiling with a hanging bracket, or attach a glass holder to a hanging bolt fixed to the ceiling, and use the glass holder to attach the lower end of the glass plate. A supporting method is generally used. However, these methods have a problem that there are many components and the construction is complicated.

Therefore, a rail having a substantially U-shaped cross-section with an open bottom and a suspension hook at the center of the top surface is attached to the ceiling, and a fixing member having a locking hook at the center of the upper surface is attached to the glass plate. There has been proposed a structure in which a glass plate is suspended from a rail by engaging a locking hook with a former hook (for example, see Japanese Patent No. 3803929). However, in this structure, the suspension hook and the locking hook are arranged at the center of the rail and the center in the thickness direction of the glass plate. The fixing member at the upper end of the glass plate is inserted at a position where the hanging hook and the locking hook are at different positions in the longitudinal direction of the rail, and then the glass plate is moved in the longitudinal direction of the rail in that state, It is necessary to insert the locking hooks from opposite ends in the longitudinal direction, but it is necessary to insert the hanging hook and the locking hook in a narrow place and cannot be seen, and this work is difficult. There was a problem. In addition, smoke-proof hanging walls using glass plates may cause serious accidents, such as glass being damaged and falling by an earthquake, or glass falling and being greatly damaged and scattered. there were.
Japanese Patent No. 3803929

  The present invention has been made in view of such a situation, and instead of a glass plate, it is lightweight, and even if it falls, it uses a panel that does not cause a serious accident due to large scattering like a glass plate, and its It is an object of the present invention to provide a smoke-proof hanging wall having a structure in which a panel can be easily attached to a ceiling, and a construction method thereof.

  In order to avoid the above problems caused by the glass plate, the smoke-proof hanging wall of the invention according to claim 1 includes a rectangular frame and a fiber reinforced sheet attached to the frame instead of the glass plate. In order to facilitate the work of attaching the panel to the ceiling, the ceiling has a substantially U-shaped cross section with the bottom open, and a hanging hook on one side of the inner wall A rail having a beat mounting groove formed below the rail is provided, and a mounting member having a locking hook that can be locked to the hanging hook of the rail is attached to the panel, and the hanging hook of the rail is attached. The panel is suspended from the rail by locking the locking hook of the panel, and an elastic material is used to prevent a gap between the both sides of the inner wall of the rail and the panel. Be beat It is obtained by a structure for mounting.

  According to a second aspect of the present invention, in the smoke-proof hanging wall according to the first aspect, the rail limits the amount of movement of the locking hook that is locked to the upper side of the hanging hook. It is set as the structure provided with the projection part to perform.

  According to a third aspect of the present invention, in the smoke-proof hanging wall according to the first or second aspect, the locking hook of the panel is further provided on the side surface of the rail inner wall facing the side surface provided with the hanging hook. It is configured to attach a leaf spring-made anti-falling metal fitting provided with a triangular protruding portion that prevents the hook from coming off from the hanging hook.

  The invention according to claim 4 is the smoke proof hanging wall according to claim 1, 2, or 3, wherein the fiber reinforced sheet used in the panel is 20 to 70% by weight of the glass fiber fabric, and the glass fiber fabric. The resin coating layer is formed by impregnating and curing a resin with a glass fiber sheet having 80 to 30% by weight, and the refraction of the glass composition constituting the glass fiber in the glass fiber fabric and the resin coating layer The difference in rate is set to ± 0.02 or less.

  The invention according to claim 5 is the method for constructing the smoke-proof hanging wall according to claim 1 described above, comprising the step of arranging the rail on the ceiling, and the hanging hook of the rail before or after the step. A step of attaching a beat to a lower groove for attaching a beat, a step of hanging the panel on the rail by hooking a hook of the panel on the hanging hook of the rail, and the hanging hook of the inner wall of the rail Is a structure having a step of attaching a beat between the facing side surface and the panel.

  The smoke-proof hanging wall of the present invention uses a panel having a structure in which a fiber reinforced sheet is attached to a frame, so it is lighter than a conventionally used glass plate, has good workability, and is large due to an earthquake or the like. Even if it shakes, it will not break, and even if it falls, it will not break and scatter. When attaching the panel to the ceiling, it is only necessary to hook the locking hook of the mounting member attached to the panel to the hanging hook formed on one side of the inner wall of the rail. By inserting the member and then moving it slightly in the lateral direction (in the thickness direction of the panel), the hook can be easily hooked on the hanging hook. Furthermore, since the beats made of an elastic material are installed between the both sides of the inner wall of the rail and the panel, the panel moves in the thickness direction with respect to the rail. Even when the panel is shaken due to an earthquake or the like, it is difficult for the locking hook to come off from the hanging hook, so that it hardly falls off.

  Here, as described in claim 2, when the projection is provided on the rail, when the panel shakes and jumps up due to an earthquake or the like, the jumping amount of the locking hook of the panel can be limited, It can prevent more reliably that the latching hook of a panel remove | deviates from a hanging hook.

  In addition, as described in claim 3, when a drop-off prevention metal fitting is attached to the side surface of the rail inner wall facing the side surface provided with the hanging hook, when the panel shakes and jumps up due to an earthquake or the like, The drop-off prevention metal fitting prevents the panel mounting member from moving in the lateral direction, and thereby it is possible to more reliably prevent the locking hook of the panel from coming off from the hanging hook.

  In addition, as described in claim 4, the fiber reinforced sheet used in the panel is 20 to 70% by weight of a glass fiber fabric, and the resin coating formed by impregnating and curing the glass fiber fabric with a resin. It is composed of a glass fiber sheet having a layer of 80 to 30% by weight, and the difference in refractive index between the glass composition constituting the glass fiber in the glass fiber fabric and the resin coating layer is set to ± 0.02 or less. The resin fiber is surely impregnated into the glass fiber fabric, and the resin layer is formed on the surface layer, and the pattern of the glass fiber fabric is raised or hardly appears white due to poor resin impregnation, In addition, the glass fiber fabric is hardly visible and the sheet is transparent. For this reason, this smoke-proof hanging wall does not block the visual field and can give an excellent aesthetic appearance. Furthermore, since the glass fiber sheet uses a non-combustible glass fiber fabric, the non-combustibility required for a building can be imparted.

  FIG. 1 is a schematic perspective view showing a part of a smoke-proof hanging wall 1 according to an embodiment of the present invention, and 2 is a ceiling. The smoke-proof hanging wall 1 includes a rail 4 attached to the ceiling and a panel 5 attached to the rail 4. As shown in FIGS. 4 (a) and 4 (b), the panel 5 includes a frame 6 assembled so as to be rectangular as a whole, a fiber reinforced sheet 7 attached to the frame 6, and a frame. Outer frames 8 and 9 attached to the outside of the frame body 6 with screws 10 are provided so as to protect the fiber reinforced sheet 7 in a portion fixed to the body 6. As the fiber reinforced sheet 7, a glass fiber sheet having transparency, incombustibility and the like is used. Details thereof will be described later. The outer frame 8 arranged on one side of the long side of the frame body 6 acts as an attachment member for attaching the panel 5 to the rail 4 and is hereinafter referred to as an attachment member. The attachment member 8 is formed with a locking hook 8a by folding the tip edge of one side surface outward in a U shape. A metal material such as aluminum, fiber reinforced resin, or the like is used for the frame body 6, the attachment member 8, and the outer frame 9, but a metal material is preferable from the viewpoint of nonflammability. The fixing of the attachment member 8 and the outer frame 9 to the frame 6 is not limited to the case where the screw 10 is used, and an adhesive may be used.

  FIG. 2 is a schematic cross-sectional view showing a region near the ceiling of the smoke-proof hanging wall 1 in an enlarged manner, and FIG. 3 is a schematic cross-sectional view showing parts in the region shown in FIG. The rail 4 has a substantially U-shaped cross section that is open at the bottom, and the top surface portion thereof is fixed to the ceiling 2 with screws 12. With this configuration, the rail 4 can be easily attached to the ceiling. On one side surface of the inner wall of the rail 4, a hanging hook 4 a that is substantially L-shaped upward is formed, and a protruding portion 4 b is formed above it. The hanging hook 4a is for hanging the panel 5 by hooking a locking hook 8a provided on the panel 5 side, and is formed in a shape capable of locking the locking hook 8a. The protrusion 4b allows the hooks 8a to be hooked on the hanging hooks 4a, but restricts the upward movement when the hooks 8a locked to the hanging hooks 4a are pushed upward. In order to do so, it is arranged at an appropriate distance from the hanging hook 4a. By providing this protrusion 4b, even if the panel 5 is shaken and jumps up in the event of an earthquake or the like, the amount of jumping of the locking hook 8a is limited, and the locking hook 8a is disengaged from the hanging hook 4a. It has become difficult. A beat mounting groove 4c for mounting the beat 14 is formed below the hanging hook 4a. The beat 14 is made of an elastic material such as rubber, and closes the space between the side surface of the inner wall of the rail 4 and the side surface of the mounting member 8 of the panel 5 in the state in which the panel 5 is suspended from the rail 4. The mounting member 8 is restrained so as not to move in cooperation with the beat 15 arranged. The beat 14 includes a mounting portion 14a that fits in the beat mounting groove 4c, a flat portion 14b that abuts against the side surface of the mounting member 8, and the like.

  An inclined surface 4d for attaching the drop-off prevention metal fitting 16, an upper and lower groove 4e, and a step portion 4f are formed on a side surface of the inner wall of the rail 4 facing the side surface on which the hanging hook 4a is formed. The drop-off prevention metal fitting 16 is made of a leaf spring, and has an upper end portion 16a for insertion into the groove 4e, a triangular protruding portion 16b, a linear portion 16c contacting the inclined surface 4d, and a step portion 4f. A bent portion 16d for seating and a lower end portion 16e extending downward are provided. As shown in FIG. 2, in a state where the fall-off prevention metal fitting 16 is attached to the rail 4, the triangularly protruding portion 16 b is slightly above the upper end of the side surface of the attachment member 8 of the panel 5 suspended from the rail 4. However, as shown in FIGS. 6A and 6B, when the panel 5 is shaken and jumped up due to an earthquake or the like and the locking hook 8a is about to come off from the hanging hook 4a, a protrusion is formed. The portion 16b thus made contacts with the side surface of the mounting bracket 8 to prevent the mounting bracket 8 from moving away from the hanging hook 4a. This prevents the locking hook 8a from being detached from the hanging hook 4a and the panel 5 from falling off. The position of the triangularly projecting portion 16b provided on the drop-off preventing metal fitting 16 is not limited to the position shown in FIG. 2, and may be a position facing the side surface of the mounting metal fitting 8 below the position. The lower end portion 16e of the drop-off prevention metal fitting 16 is set to have a length that extends downward from the lower end of the rail 4, and extends downward from the lower end of the rail 4 as shown in FIG. The drop-off prevention metal fitting 16 can be easily removed by hooking the existing portion with the removal tool 18 and pulling it off from the side surface of the rail 4. The drop-off prevention metal fitting 16 may be made to have a length over the entire length of the rail 4, but in order to facilitate handling and reduce the cost, a plurality of pieces made with a narrow width are suitable in the longitudinal direction of the rail 4. It is preferable to attach to a proper position.

  2 and 3, between the side surface of the inner wall of the rail 4 on the side where the drop-off prevention metal fitting 16 is attached and the side surface of the mounting member 8 of the panel 5, the gap between both is closed and the mounting member 8 is placed on the opposite side. A beat 15 made of an elastic material such as rubber is attached so as to be pressed against the beat 14. After attaching the panel 5 to the rail 4, the beat 15 is attached by pushing from below between the side surface of the mounting member 8 and the side surface of the rail 4, and in this embodiment, the mounting is facilitated. A groove 15a opened on the lower side is formed. Further, the beat 15 is formed with a flat surface 15b to be placed on the step portion 4f formed on the rail 4, so that the beat 15 attached at a predetermined position is difficult to drop off. Since the beat 15 is pressed against the side surface of the rail 4 of the mounting member 8 by its own elastic force, it does not easily fall off even if there is no flat surface 15b, and therefore there is no need for the flat surface 15b. Further, the shape of the beat 15 is not limited to this embodiment, and the space between the side surface of the inner wall of the rail 4 and the side surface of the mounting member 8 of the panel 4 is closed and the mounting member 8 is turned to the beat 14 on the opposite side. Any one can be used as long as it can be pressed, and a simple circle, ellipse, square, or the like may be used.

  Next, the construction method of the smoke proof dripping wall 1 of the said structure is demonstrated. First, the rail 4 is attached to the ceiling 2. A beat 14 is attached to the rail 4 in advance, or after being attached to the ceiling, the beat 14 is attached to the rail 4. Next, as shown in FIG. 5A, the mounting member 8 of the panel 5 is inserted from the opening at the lower end of the rail 4, and the locking hook 8 a at the upper end is hooked on the hanging hook 4 a of the rail 4. . At this time, since the hanging hook 4a is formed on the side surface of the inner wall of the rail 4, the tip of the locking hook 8a is slid along the side surface of the beat 14 or the inner wall of the rail with the attachment member 8 slightly inclined. By making it raise so that it may do, the latching hook 8a can be easily hooked on the hanging hook 4a. Further, the panel 5 does not use a glass plate as in the prior art, and has a structure in which the fiber reinforced sheet 7 is stretched on the frame body 6, so that it is lighter and easier to handle than when a glass plate is used. The panel 5 can be easily attached to the rail 4.

  Next, as shown in FIG. 5 (b), the drop-off prevention metal fitting 16 is inserted into a predetermined position in the rail 4, and then the beat 15 is attached to the mounting member 8 of the panel 5 as shown in FIG. 5 (c). It inserts between the side surfaces of the inner wall of the rail 4. Accordingly, the panel 5 suspended from the rail 4 is sandwiched between the beats 14 and 15 on both sides and restrained so as not to move. Thereafter, the same operation is performed for other panels, so that the smoke-proof hanging wall 1 in which a plurality of panels are arranged is formed. It should be noted that an appropriate connecting member, for example, an H-shaped member is arranged at the joint between the panel 5 and the panel 5 so that the two panels are joined to each other, so that a smoke-proof hanging wall is generated without generating a gap between the panels. Can be formed.

  In the smoke-proof hanging wall 1 formed as described above, the panel 5 is held by the rail 4 by the locking hook 8a of the panel 5 being locked to the hanging hook 4a of the rail 4, and the panel 5 Since the mounting member 8 is sandwiched and restrained by the beats 14 and 15 on both sides, even if the panel 5 is shaken due to an earthquake or the like, the locking hook 8a is not easily detached from the hanging hook 4a, and the panel is further shaken. In this case, the drop-off prevention metal fitting 16 prevents the attachment member 8 from moving in the lateral direction, so that the locking hook 8a is hardly detached from the hanging hook 4a, which is safe. Further, since the panel 5 has a structure in which the fiber reinforced sheet 7 is stretched on the frame body 6, it does not break and drop due to a large vibration as in the case of using a glass plate. It is extremely safe because it can be prevented from being broken and scattered around, and can prevent a serious accident that may have conventionally occurred when a glass plate is used. Furthermore, since the panel 5 is lighter than the glass plate, it is easy to handle and construct, and the panel size (for example, length) can be made larger than when a conventional glass plate is used. The number of parts is reduced. Thus, there is an advantage that the manufacturing cost of the smoke-proof hanging wall can be reduced.

  In the embodiment described above, the locking hook 8a is formed over the entire length of the mounting member 8 mounted on the entire length of one side of the panel 5, but the locking hook 8a is not necessarily formed over the entire length. It is not necessary to make it, and it is good also as a structure which forms a latching hook in the several places spaced apart suitably. Furthermore, in the above-described embodiment, the outer frame 8 attached to one side of the frame body 6 is used as the attachment member. However, the present invention is not limited to this configuration, and the attachment member may be provided as a component different from the outer frame. FIG. 7 shows the panel 5A in that case. The panel 5 </ b> A has a fiber reinforced sheet 7 attached to the frame body 6, an outer frame 9 attached to the outside of the four sides of the frame body 6, and an outer frame 9 arranged on one side on the long side of the frame body 6. A plurality of attachment members 8A each provided with a locking hook 8a are attached at an appropriate interval in the longitudinal direction. The panel 5A having this configuration can be easily attached to the rail 4 shown in FIG.

  As described above, the panel 5 used in the present invention includes the frame body 6 and the fiber reinforced sheet 7 stretched on the frame body 6. Here, as the fiber reinforced sheet 7, it is preferable to use a glass fiber sheet having transparency, incombustibility, and the like. Hereinafter, a glass fiber sheet suitable for use as the fiber reinforced sheet 7 will be described.

  A glass fiber sheet suitable for use in the panel 5 is obtained by impregnating a glass fiber fabric with a resin and molding it into a sheet shape.

  A glass fiber fabric is a material which becomes the base fabric of a glass fiber sheet. The glass fibers that are the material of the glass fiber fabric include general-purpose non-alkali glass fibers (E glass), acid-resistant alkali-containing glass fibers (C glass), high-strength and high-modulus glass fibers (S glass), and alkali resistance. Although glass fiber (AR glass) etc. are mentioned, use of non-alkaline glass fiber with high versatility is preferable. The refractive index of the glass composition constituting the glass fiber is preferably selected so that the difference from the refractive index of the resin used for impregnation is ± 0.02 or less, but the refractive index on the resin side is as desired. As long as it can be selected, a glass composition having any refractive index may be used. As the glass composition, for example, those having a refractive index of about 1.4 to 1.7 are preferred, and those having a refractive index of 1.5 to 1.6 are more preferred. When glass fiber made of non-alkali glass is used, the refractive index is about 1.55 to 1.57.

  Examples of the weave structure of the glass fiber woven fabric include plain weave, satin weave, twill weave, oblique weave, and woven weave. Of these, plain weave, oblique weave and woven weave are preferred. Both the gap between adjacent warps and the gap between adjacent wefts in the glass fiber fabric are preferably 0.5 mm or less, and more preferably 0.2 mm or less. This is because when the gap between adjacent warp yarns or the gap between weft yarns in the glass fiber fabric is narrow, the flame is difficult to pass through the glass fiber fabric. The filament constituting the glass fiber fabric preferably has a diameter of 1 to 20 μm, more preferably 3 to 12 μm. Moreover, 5-70 tex is preferable and the count of glass fiber has more preferable 10-35 tex.

  The glass fiber fabric may be woven with one type of glass fiber, or may be woven with two or more types of glass fibers. For example, the warp and the weft may have the same glass fiber composition and may have different glass fiber counts.

  The glass fiber fabric is preferably surface-treated with a silane coupling agent usually used as a glass fiber treating agent for the purpose of improving the durability of the glass fiber sheet. As a result, the glass fiber fabric and the cured resin can be satisfactorily bonded. In addition, since only a small amount of the silane coupling agent adheres to the surface of each glass fiber, it does not substantially affect the light transmission characteristics and air permeability of the glass fiber fabric.

  The fiberglass fabric may be subjected to a fiber opening treatment. The volume and area occupied by warps and wefts formed by glass fibers by spreading the glass fibers that make up the glass fiber fabric or flattening the cross-sectional shape of the glass fibers by opening the fiber. The range can be increased or deformed. By reducing the thickness of the glass fiber fabric by the fiber opening treatment, the total light transmittance can be increased. At the same time, the fiber can be deformed into a shape suitable for resin impregnation by the fiber opening process.

  The resin coating layer is formed by impregnating a resin into a glass fiber fabric and curing it. The resin coating layer enters a gap between the glass fibers of the glass fiber fabric and forms resin layers on the front and back surfaces. Various resins such as a thermoplastic resin and a thermosetting resin can be used as the resin coating layer. Particularly, the resin can be cured by heat curing or by irradiation with light such as ultraviolet rays. It is preferable to use a curable resin such as a photo-curing type. Such a heat or photo-curing type resin has an advantage that it is easy to be impregnated into a glass fiber woven fabric in an uncured state at about room temperature, with a low viscosity.

  As the material of the resin coating layer, it is preferable to use a material having a difference in refractive index of ± 0.02 or less from the glass composition of the glass fiber fabric. Thus, by making the difference in refractive index between the glass fiber woven fabric and the resin coating layer sufficiently small as ± 0.02 or less, the glass fiber woven fabric cannot be visually recognized in the resin coating layer. Therefore, in the glass fiber sheet, the portion formed by the glass fiber fabric and the resin coating layer can be made transparent to sufficiently increase the total light transmittance of the glass fiber sheet. The method for measuring the refractive index of the resin coating layer is in accordance with “Method for measuring refractive index of plastic” in JIS K7142.

  As the curable resin used for forming the resin coating layer, it is preferable to use a vinyl ester resin, an unsaturated polyester resin, an epoxy resin, etc., because it has excellent heat resistance, chemical resistance, mechanical strength, and curing characteristics. More preferred are vinyl ester resins. The curable resin impregnated into the glass fiber fabric may contain additives such as a flame retardant, an ultraviolet absorber, a filler, and an antistatic agent. Examples of the flame retardant include aluminum hydroxide, magnesium hydroxide, trichloroethyl phosphate, triallyl phosphate, ammonium polyphosphate, and phosphate ester. Examples of the ultraviolet absorber include benzotriazole. Examples of the filler include calcium carbonate, silica, and talc. Examples of the antistatic agent include surfactants. These additives may be in the form of particles, and in the case of particles, the particle size is preferably 10 μm or less, more preferably 5 μm or less. When the particle size is small, the total light transmittance does not decrease and haze does not increase.

  The ratio of the glass fiber fabric and the resin coating layer in the glass fiber sheet is preferably 20 to 70% by weight for the glass fiber fabric and 80 to 30% by weight for the resin coating layer. When the glass fiber fabric is less than 20% by weight, the amount of resin is increased, and the incombustibility of the obtained glass fiber sheet is lowered. On the other hand, when the glass fiber fabric exceeds 70% by weight, the amount of the resin in the surface layer of the obtained glass fiber sheet may be reduced, and the pattern of the glass fiber fabric may appear, and whitening due to poor impregnation may occur. It may occur, and transparency is further reduced.

The mass of the glass fiber fabric per unit area of the glass fiber sheet is determined in consideration of the strength, durability and resin impregnation property of the glass fiber sheet. For example, it may be about 10 to 300 g / m ^2. In particular, in order to improve the strength and durability of the glass fiber fabric and the impregnation property of the resin into the glass fiber fabric, the mass of the glass fiber fabric is preferably ²⁰ to 300 g / m ² . By setting the mass of the glass fiber fabric to 20 g / m ² or more, the strength of the glass fiber sheet can be sufficiently increased. Moreover, the impregnation defect of resin can be prevented because the mass of a glass fiber fabric shall be 300 g / m < ² > or less. When the mass of the glass fiber fabric per unit area of the glass fiber sheet is set to 150 g / m ² or more, one thick glass fiber fabric may be used, or a plurality of thin glass fiber fabrics may be used. May be. From the viewpoint of improving the impregnation property, it is preferable to use a plurality of thin glass fiber fabrics.

The mass of the resin coating layer per unit area of the glass fiber sheet may be about 10 to 500 g / m ² . By setting the mass of the resin coating layer to 10 g / m ² or more, it is possible to prevent the pattern of the glass fiber fabric from being raised or the resin from appearing whitened due to poor impregnation. Moreover, by making the mass of the resin 500 g / m ² or less, the amount of the resin, which is a relatively flammable portion of the glass fiber sheet, is kept low, and the glass fiber sheet has excellent flame retardancy. Can do.

It is preferable to select the material of the resin forming the resin coating layer so that the difference in Abbe number between the glass composition constituting the glass fiber in the glass fiber fabric and the resin coating layer is 30 or less. By suppressing the difference in Abbe number to 30 or less, scattering in the visible light region can be reduced at the interface between the glass fiber fabric and the resin coating layer, and coloring at the interface can be suppressed. The Abbe number is a numerical value for evaluating the chromatic aberration of the transparent body, and is represented by the Abbe number V = (n _D −1) / (n _F −n _C ). Here, n _D is a refractive index for light having a wavelength of 589.2 nm, n _F is a refractive index for light having a wavelength of 486.1 nm, and n _C is a refraction for light having a wavelength of 656.3 nm. Rate. In addition, although there is no restriction | limiting in particular in the Abbe number of a glass composition, For example, it is preferable that it is the range of 35-75, and it is still more preferable that it is the range of 50-70.

  The glass fiber sheet preferably has a total light transmittance of 80% or more and a haze of 30% or less, a total light transmittance of 85% or more, and a haze of 20% or less. Is more preferable, and it is preferable to select the resin material so as to be within these numerical ranges. Here, the total light transmittance and haze are numerical values indicating how transparent the sheet is. The greater the total light transmittance and the smaller the haze, the higher the transparency. In addition, the measuring method of the total light transmittance of a glass fiber sheet follows JIS K 7105 "Optical characteristic test method of plastic", "5.5 Light transmittance and total light reflectance". The haze measurement method is in accordance with JIS K 7105 “Plastic optical property test method” and “6.4 haze”.

  The glass fiber sheet having the above-described configuration can be manufactured using a conventional method for manufacturing a fiber-reinforced resin sheet. For example, a glass fiber fabric is continuously run, and a first carrier film coated with an uncured resin is pressed against one surface of the glass fiber fabric while continuously running, and the other side of the glass fiber fabric is pressed. The second carrier film is pressed against the surface while continuously running, and the glass fiber fabric and uncured resin are sandwiched between the first and second carrier films, and the resin is cured. It can be manufactured using a continuous forming method for forming into a glass fiber sheet. It can also be manufactured by a batch method using a mold.

  By using the glass fiber sheet described above as the fiber reinforced sheet 7 attached to the frame body 6, the pattern of the glass fiber fabric is raised, or hardly appears white due to poor impregnation of the resin, In addition, the glass fiber fabric is hardly visually recognized, and the transparency of the sheet becomes extremely high. For this reason, the smoke-proof hanging wall using this glass fiber sheet can give the outstanding aesthetics, without interrupting a visual field.

  Although the embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and it goes without saying that various modifications can be made within the scope of the claims.

The schematic perspective view which shows a part of smoke-proof hanging wall 1 which concerns on embodiment of this invention. Schematic sectional view showing the area near the ceiling of the smoke-proof wall FIG. 2 is a schematic cross-sectional view showing the main components of the part shown in FIG. (A) is a schematic plan view of the panel used for the smoke-proof hanging wall of FIG. 1, (b) is a schematic sectional view taken along the line AA of (a). (A), (b), (c) is schematic sectional drawing which shows the procedure which attaches the panel 5 to the rail 4 (A), (b) is a schematic cross-sectional view illustrating a state in which the drop-off prevention metal fitting prevents the panel from falling off when the panel is shaken, and (c) is a schematic cross-sectional view illustrating a state in which the drop-off prevention metal fitting is removed. (A) is a schematic plan view which shows the other example of the panel used for the smoke-proof hanging wall of FIG. 1, (b) is a schematic sectional drawing seen from the BB arrow of (a).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Smoke-proof hanging wall 2 Ceiling 4 Rail 4a Hanging hook 4b Protrusion part 4c Beat mounting groove 5 Panel 6 Frame 7 Fiber reinforcement sheet 8 Mounting member (outer frame)
8A Mounting member 8a Locking hook 9 Outer frame 10, 12 Screw 14, 15 Beat 16 Fall-off prevention fitting

Claims (5)

  A smoke-proof hanging wall provided with a rail arranged on the ceiling and a panel attached to the rail, the rail having a substantially U-shaped cross section opened downward and suspended on one side surface of the inner wall. A lower hook and a beat mounting groove formed below the hook; and the panel is attached to a rectangular frame, a fiber reinforced sheet attached to the frame, and one side of the frame. And a mounting member having a locking hook that can be locked to the hanging hook of the rail, and the panel is suspended from the rail by engaging the locking hook of the panel with the hanging hook of the rail. A smoke-proof hanging wall, characterized in that a beet made of an elastic material is attached between both side surfaces of the inner wall of the rail and the panel so as to close a gap between the two.   2. The smoke-proof hanging wall according to claim 1, wherein the rail includes a protruding portion for restricting an upward movement amount of the locking hook locked on the suspension hook. .   Further, a leaf spring drop-off provided on the side surface of the inner wall of the rail facing the side surface provided with the hanging hook is provided with a triangular protruding portion for preventing the locking hook of the panel from coming off from the hanging hook. A smoke-proof hanging wall according to claim 1 or 2, wherein a prevention metal fitting is attached.   The fiber reinforced sheet used for the panel is a glass fiber sheet having 20 to 70% by weight of a glass fiber fabric and 80 to 30% by weight of a resin coating layer formed by impregnating and curing the resin to the glass fiber fabric. 4. The prevention according to claim 1, wherein a difference in refractive index between the glass composition constituting the glass fiber in the glass fiber fabric and the resin coating layer is ± 0.02 or less. Smoke wall.   A method for constructing a smoke-proof hanging wall according to claim 1, wherein a step of arranging a rail on the ceiling and a beat is attached to a groove for attaching a beat below a suspension hook of the rail before or after the step. A step of suspending the panel on the rail by hooking a locking hook of the panel on the suspension hook of the rail, and a side surface of the inner wall of the rail facing the suspension hook and the panel A method for constructing a smoke-proof wall having a step of attaching a beet to the wall.

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