JP2010065396A - Fireproof board for curtain wall, and structure for supporting the same - Google Patents

Abstract

The present invention provides a fireproof board for curtain walls with good workability and a support structure for a fireproof board with high mounting strength.
A curtain wall fireproof board (10) has a fireproof board (12), a through hole (18) and a counterbore (20) are provided in the board (12), and a nut (14) is inserted into the through hole (18). One end face of the nut 14 is joined to the receiving metal fitting 16, the receiving metal fitting 16 is housed in a counterbore 20, and the receiving metal fitting 16 and the plate material 12 are joined. The curtain wall fireproof board 10 is arranged with the insertion side of the nut nut 14 facing the building side (in the direction of arrow A), and the bolt 80 and the nut 14 inserted into the mounting hole 79 of the mounting bracket 78 are screwed together. And it is supported. The mounting bracket 78 is joined to the building frame, and the curtain wall fireproof board 10 is directly supported from the building frame via the mounting bracket 78.
[Selection] Figure 13

Description

  The present invention relates to a fireproof board for a curtain wall that constitutes an interlayer section of the curtain wall, and a support structure for the fireproof board.

  In the Building Standard Law, regarding curtain walls used for buildings exceeding a certain height and scale, the technical standards for outer walls are applied to the part between windows on the upper and lower floors (hereinafter referred to as spandrel), For the purpose of preventing the spread of fire to the upper floor, it is obliged to provide an interlayer partition member having a height of 900 mm or more.

  In an aluminum curtain wall, generally, a method of attaching a fireproof board as an interlayer partition member to a spandrel part is used. Here, the fireproof board is formed of a fiber-mixed calcium silicate board or the like, and the fireproof board is attached by being sandwiched between aluminum frames (vertical and invisible) of the aluminum curtain wall.

However, since the aluminum frame has low fire resistance, a support structure for increasing the mounting strength of the fireproof board has been proposed (Patent Document 1).
That is, as shown in FIG. 19, in the support structure described in Patent Document 1, the fireproof board 10 is attached so as to be surrounded by the aluminum frame stand 110 and the mesh 112. At this time, the upper and lower ends of the refractory board 10 are sandwiched between the eyes 112.

Further, a fastener 114 is fixed to the slab 76 with bolts 117 on the indoor side of the building. Further, the vertical bracket 116 is fixed to the vertical 110 with bolts 119, and the fastener 114 and the vertical bracket 116 are attached with bolts 120 so that the height can be adjusted.

The vertical bracket 116 is overlapped with the end portion in the width direction of the adjacent fireproof board 10 with the vertical 110 interposed therebetween, and an insert nut (not shown) is embedded in the overlapped position of the fireproof board 10. Then, the bolt 118 is inserted from the mounting hole of the vertical bracket 116 and screwed with the insert nut to support the fireproof board 10.

However, in the support structure of Patent Document 1, the fireproof board 10 is often formed of a soft material (brittle material) such as a fiber-mixed calcium silicate board, a gypsum board, a rock wool board, or a ceramic fiber board. Careful handling is required for embedding the insert nut at the construction site, and there is a problem that workability is poor. For this reason, the fireproof board 10 with good workability is desired.

Furthermore, since the support structure of patent document 1 is the structure which embeds an insert nut in the fireproof board 10, it says that the joining strength of the junction part of a fireproof board and an insert nut is greatly influenced by the mechanical strength of a fireproof board. There's a problem. Since the fireproof board is made of a material that does not have a high mechanical strength as described above, the strength of the joint cannot be expected so much. There is a need for a fireproof board support structure with high mounting strength.
JP-A-7-324415

  In view of the above-described facts, an object of the present invention is to provide a curtain wall fireproof board having a good workability that constitutes an interlayer section of a curtain wall, and a fireproof board support structure having high mounting strength.

  A fireproof board for a curtain wall according to the invention of claim 1 is joined to a fireproof plate material provided with a through hole, a nut inserted into the through hole, and an end surface of the nut. And a receiving member in contact therewith.

According to the first aspect of the present invention, the fireproof plate is provided with a through hole, a nut is inserted into the through hole, and a receiving member that contacts the plate is joined to the end surface of the nut.
Thereby, the nut is inserted in the through hole of the curtain wall fireproof board in advance, and the work of embedding the nut at the construction site becomes unnecessary, and the workability of the curtain wall fireproof board is improved.

In addition, since the nut is inserted into the through hole of the curtain wall fireproof board, a wide joint area between the outer peripheral surface of the nut and the peripheral wall of the through hole of the curtain wall fireproof board can be secured. Thereby, the force per unit area which the surrounding wall of the through-hole of the fire wall for curtain walls receives can be reduced, and the support performance of the fire wall for curtain walls can be improved.

Also, the receiving member is in contact with the surface of the curtain wall fireproof board. By increasing the area of the receiving member, even if the curtain wall fireproof board receives an external force such as wind or earthquake, the curtain wall fireproof The force applied to the board can be distributed and transmitted to the receiving member. As a result, the force per unit area transmitted from the curtain wall fireproof board to the receiving member can be reduced, and the support performance of the curtain wall fireproof board can be enhanced.
In addition, existing fire-resistant plates such as fiber-mixed calcium silicate board, gypsum board, rock wool board, ceramic fiber board, ALC board, etc. can be used as fire-resistant board materials, but fiber is mixed from the viewpoint of fire resistance and workability. A calcium silicate plate is preferred.

According to a second aspect of the present invention, in the curtain wall fireproof board according to the first aspect, a functional material is filled between the peripheral wall of the through hole and the outer peripheral surface of the nut.
According to the invention described in claim 2, the functional material is filled between the peripheral wall of the through hole and the outer peripheral surface of the nut.
As a result, the nut and the fireproof board are integrated, and the workability at the time of transportation or when installing the fireproof board for the curtain wall is greatly improved.

According to a third aspect of the present invention, in the fireproof board for a curtain wall according to the first or second aspect, the plate member is provided with a counterbore for receiving the receiving member.
According to the third aspect of the present invention, the receiving member is housed in the spot facing provided on the surface of the curtain wall fireproof board.
Thereby, the board surface of a receiving member and the surface of the fireproof board for curtain walls can be finished to the same height, and the appearance of the fireproof board for curtain walls can be improved.

  According to a fourth aspect of the present invention, in the fireproof board for a curtain wall according to the third aspect, the counterbore includes a first counterbore that houses the receiving member, and a second counterbore provided at a position shallower than the first counterbore. The second counterbore has a diameter equal to or larger than that of the first counterbore, and the second counterbore is covered with a first decorative plate. Yes.

  According to the invention described in claim 4, the counterbore is a two-stage counterbore, the first counterbore contains the receiving member, and the second counterbore is closed by the first decorative plate. The first decorative board may or may not be the same material as the curtain wall fireproof board.

The invention according to claim 5 is the curtain wall fireproof board according to claim 3, wherein the counterbore has a depth that makes the plate surface of the receiving member and the surface of the plate material the same surface, and the entire surface of the plate material Is characterized by being covered with a second decorative board.
According to the invention described in claim 5, the entire surface of the fireproof board for curtain wall is covered with the second decorative board.
Thereby, the whole surface of the fireproof board for curtain walls can be covered with the second decorative board, and the fireproof performance can be improved without impairing the beauty of the building. The second decorative board may or may not be the same material as the curtain wall fireproof board.

The invention according to claim 6 is the fireproof board for curtain wall according to any one of claims 1 to 5, wherein the fireproof board material used for the fireproof board for curtain wall is a fiber mixed calcium silicate board. It is characterized by being.
According to the sixth aspect of the present invention, the fire-resistant plate material used for the curtain wall fire-resistant board is a fiber-mixed calcium silicate plate. Thereby, the fire-proof board for curtain walls with good fire resistance and workability can be provided.

  The invention according to claim 7 is formed in the fireproof board support structure, the fireproof board according to any one of claims 1 to 6, a mounting bracket fixed to a structural member of a building, and the mounting bracket. And a bolt inserted into the mounting hole and screwed into the nut.

  According to the invention of claim 7, a mounting hole is formed in the mounting bracket fixed to the structural member of the building, and by screwing the bolt inserted into the mounting hole and the nut of the fireproof board, A fireproof board for curtain walls can be attached to the building frame.

Thus, since the curtain wall fireproof board is directly supported by the mounting bracket fixed to the structural member of the building, the mounting strength of the curtain wall fireproof board can be increased as compared with the method of sandwiching the curtain wall fireproof board.
Even when external forces such as wind and earthquake are applied, the curtain wall fireproof board is sandwiched from both sides by the receiving member and mounting bracket, reducing the force generated at the joint and supporting the curtain wall fireproof board. Performance can be increased.

  The invention according to claim 8 is the fireproof board support structure according to claim 7, further comprising a holding portion for holding the lower end surface of the fireproof board for curtain wall from the lower side at one end, and the bolt being inserted at the other end. It has a fireproof board holding member provided with a through-hole, and a bolt inserted into the mounting hole penetrates the through-hole.

According to invention of Claim 8, the holding part provided in the end of the fireproof board holding member hold | maintains the lower end surface of the fireproof board for curtain walls from the lower side. A through hole into which a bolt is inserted is provided at the other end of the fireproof board holding member, and the fireproof board holding member is fixed to the building with the bolt.
As a result, even for large and heavy curtain wall fireproof boards, the curtain wall fireproof board can be attached to the building without imposing an excessive burden on the through hole of the curtain wall fireproof board. The support performance of the board can be improved.

  The invention according to claim 9 is the fireproof board support structure according to claim 7, wherein the backside of the curtain wall fireproof board is supported and a through hole into which the bolt is inserted is provided. A fireproof board holding member formed on the upper end and lower end of the back face, and having a holding part for holding the upper end face and the lower end face of the curtain wall fireproof board from the outside, and inserted into the mounting hole. The bolt penetrates the through hole.

According to invention of Claim 9, the holding part formed in the upper end part and lower end part of the fireproof board holding member hold | maintains the upper end surface and lower end surface of the fireproof board for curtain walls. In addition, a through-hole into which a bolt is inserted is provided in the back surface portion of the fireproof board holding member, and the fireproof board holding member is fixed to the building frame with the bolt.
As a result, even for large and heavy curtain wall fireproof boards, the curtain wall fireproof board can be attached to the building without imposing an excessive burden on the through hole of the curtain wall fireproof board. The support performance of the board can be improved.

  A tenth aspect of the invention is characterized in that in the fireproof board support structure according to the eighth or ninth aspect, a buffer material is provided between the fireproof board holding member and the curtain wall fireproof board.

According to the invention described in claim 10, the cushioning material is provided between the fireproof board holding member and the fireproof board for curtain wall.
Thereby, even if the curtain wall fireproof board vibrates due to wind or earthquake, damage between the curtain wall fireproof board and the fireproof board holding member can be prevented.

Invention of Claim 11 is a fireproof board support structure of any one of Claims 7-10, The fireproof board material used for the said fireproof board for curtain walls is a fiber mixed calcium silicate board. It is characterized by that.
According to the invention described in claim 11, the fire-resistant plate material used for the curtain wall fire-proof board is a fiber-mixed calcium silicate plate. Thereby, the fire-proof board for curtain walls with good fire resistance and workability can be provided.

  Since the present invention is configured as described above, it is possible to provide a curtain wall fireproof board having a good workability that constitutes an interlayer section of the curtain wall and a fireproof board support structure having a high mounting strength.

(First embodiment)
As shown in FIGS. 1 and 2, the curtain wall fireproof board 10 according to the first embodiment includes a fireproof plate 12. The plate member 12 is an interlayer partition member used for an interlayer partition of a building, and is formed of a fiber-mixed calcium silicate plate or the like. The

  A through hole 18 is provided in the plate member 12, and a counterbore 20 is provided on one surface of the plate member 12 around the through hole 18 to receive a receiving metal fitting 16 that is a receiving member described later.

A nut 14 having a length L1 is inserted into the through hole 18. One end face of the nut 14 is joined to the receiving metal fitting 16. The metal fitting 16 is a metal flat plate formed in a disk shape having a diameter d2. Here, the length L1 of the nut 14 is smaller than the thickness T1 of the plate member 12, and the tip of the nut 14 does not protrude from the through hole 18. Further, the diameter d2 of the metal fitting 16 is larger than the diameter d1 of the nut 14, and this large portion (d2-d1) is accommodated in the counterbore 20.

  The nut 14 is inserted into the through-hole 18 from the side of the plate member 12 where the counterbore 20 is provided, and the bracket 16 and the plate member 12 are fixed with screws (not shown) at the position where the bracket 16 is housed in the counterbore 20. ing.

Thus, by attaching the nut 14 to the curtain wall fireproof board 10 in advance, the work of embedding the nut 14 in the plate material 12 at the construction site becomes unnecessary, and workability is improved.

Further, the outer peripheral surface of the nut 14 and the peripheral wall of the through hole 18 are in surface contact, and a large area of the joint portion between the nut 14 and the plate member 12 is ensured. Thereby, the force per unit area which the surrounding wall of the through-hole 18 receives from the outer peripheral surface of the nut 14 can be reduced, and the mechanical strength requested | required of the fireproof board 10 for curtain walls can be made small.

Furthermore, by increasing the diameter d2 of the receiving metal fitting 16, the area where the receiving metal fitting 16 and the plate material 12 abut can be increased. As a result, even if the curtain wall fireproof board 10 receives external force such as wind or earthquake, the force applied to the curtain wall fireproof board 10 can be distributed and transmitted to the metal fittings 16. The force per unit area transmitted from 10 to the metal fitting 16 can be reduced. As a result, the mechanical strength required for the curtain wall fireproof board 10 can be reduced.

Moreover, since the receiving metal fitting 16 is housed in the spot facing 20, the plate surface of the receiving metal fitting 16 and the surface of the plate material 12 can be finished to the same height, and the appearance of the fireproof board can be improved.

(Second Embodiment)
As shown in FIG. 3, the curtain wall fireproof board 22 according to the second embodiment is provided with a through hole 21 in the plate member 12 described in the first embodiment.

  A nut 14 to which a receiving metal fitting 16 is joined is inserted into the through hole 21, and a counterbore 23 is provided on the plate member 12, and the receiving metal fitting 16 is accommodated therein.

  A predetermined gap is provided between the peripheral wall of the through hole 21 and the outer peripheral surface of the nut 14, and between the bottom surface of the counterbore 23 and the plate surface of the receiving metal fitting 16. An adhesive 24 is applied.

  The adhesive 24 can be used regardless of whether it is organic or inorganic. In the case of an organic system, a surface treatment (sealer treatment) on the fiber-mixed calcium silicate plate is required. From the viewpoint of fire resistance, it is desirable to use an inner ceramic system or a sodium silicate system of an inorganic adhesive, and a sodium silicate system is generally used for a fiber mixed calcium silicate plate. The rest of the configuration is the same as that of the first embodiment, and a description thereof will be omitted.

  As a result, the bonding strength between the peripheral wall of the through hole 21 and the outer peripheral surface of the nut 14 and the bonding strength between the bottom surface of the counterbore 23 and the plate surface of the receiving metal fitting 16 are increased, thereby increasing the mounting strength of the fireproof board 22. it can.

  It should be noted that the adhesive 24 is applied only between the peripheral wall of the through hole 21 and the outer peripheral surface of the nut 14 when the size of the plate 12 to be attached is small and the required joint strength is low. May be.

As shown in FIG. 4, a curtain wall fireproof board 26 as another example is provided with a through hole 25 in the plate member 12 described in the first embodiment.
A nut 14 to which a receiving metal fitting 16 is joined is inserted into the through hole 25. A counterbore 27 is provided on the plate member 12 and a receiving metal fitting 16 is received.

  A predetermined gap is provided between the peripheral wall of the through hole 25 and the outer peripheral surface of the nut 14, and between the bottom surface of the counterbore 27 and the plate surface of the receiving metal fitting 16, and this gap is a functional material. A cushioning material 28 is inserted. Examples of the buffer material 28 include a rubber material.

  The receiving metal 16 is joined by a screw 30 with a cushioning material 28 inserted between the receiving metal 16 and the bottom surface of the spot facing 27.

As a result, even if an external force such as wind or earthquake acts on the fireproof board 26, the shock absorbing material 28 absorbs the impact caused by the external force, and the external force transmitted from the plate material 12 to the nut 14 is reduced, which is required for the fireproof board 22. The mechanical strength can be reduced.
Note that the buffer material 28 may be inserted only between the peripheral wall of the through hole 25 and the outer peripheral surface of the nut 14 when the size of the plate 12 is small.
Moreover, by joining with the screw 30, the joining strength of the receiving metal fitting 16 and the nut 14 and the fireproof board 12 increases, and it can prevent that the receiving metal fitting 16 and the nut 14 peel from the board | plate material 12 at the time of conveyance or an installation operation.

As shown in FIG. 5, a curtain wall fireproof board 32 according to another embodiment is provided with a through hole 31 in the plate member 12 described in the first embodiment.
The nut 14 to which the receiving metal fitting 16 is joined is inserted into the through hole 31. Further, a counterbore 33 is provided on the plate material 12 and a receiving metal fitting 16 is accommodated.

  A predetermined gap is provided between the peripheral wall of the through hole 31 and the outer peripheral surface of the nut 14, and between the bottom surface of the counterbore 33 and the plate surface of the receiving metal 16, and a seal made of a functional material is provided in this gap. The member 34 is filled.

The seal member 34 may be filled with, for example, a silicon-based filler and a thermally expandable refractory filler, or may be loaded with each molded product. Thermally expandable refractory materials include rubber materials and sponge materials.
In a state where the seal member 34 is sandwiched between the peripheral wall of the through hole 31 and the outer peripheral surface of the nut 14 and between the bottom surface of the counterbore 33 and the plate surface of the receiving metal member 16, the receiving metal member 16 and the plate material 12. Are joined with screws 30.

  Thereby, the force which acts on the board | plate material 12 from the receiving metal fitting 16 and the nut 14 can be reduced, and the support performance of the fireproof board 32 can be improved.

  Note that the filling place of the seal member 34 may be provided only between the peripheral wall of the through hole 31 and the outer peripheral surface of the nut 14 when the size of the plate 12 is small and attachment is difficult.

(Third embodiment)
As shown in FIG. 6, in the curtain wall fireproof board 36 according to the third embodiment, the depth of the spot facing 23 of the curtain wall fireproof board 22 in the second embodiment is further increased by L3. It is a configuration.

  That is, a through hole 21 is provided in the plate member 12, and a nut 14 to which a receiving metal fitting 16 is joined is inserted into the through hole 21. Further, the plate member 12 is provided with a spot facing 37 and the receiving metal fitting 16 is accommodated.

  The counterbore 37 is provided with a diameter d3 and a depth L2. The counterbore 37 accommodates the adhesive 24 and the receiving member 16 fixed by the adhesive 24. As a result, the plate surface of the metal fitting 16 is located at the depth L3 from the surface of the plate material 12.

The counterbore 37 is made of the same material as the plate member 12 and is closed by a first decorative plate 38 having a diameter d3.
Thereby, since the receiving member 16 can be made invisible with the 1st decorative board 38, the appearance of the fireproof board 36 for curtain walls improves.

  As shown in FIG. 7, in the curtain wall fireproof board 40 as another example, the depth of the spot facing 23 of the fireproof board 22 in the second embodiment is increased by L3 and the diameter is also increased. It is a configuration.

  That is, a through hole 21 is provided in the plate member 12, and a nut 14 to which a receiving metal fitting 16 is joined is inserted into the through hole 21. Further, the plate member 12 is provided with a counterbore 23 (first counterbore) and a counterbore 48 (second counterbore).

  The counterbore 48 is provided at a position shallower than the counterbore 23, has a depth L3, and has a diameter d4 larger than the diameter d3 of the counterbore 23.

The counterbore 48 is made of the same material as the plate member 12 and is closed by a decorative plate 42 (first decorative plate) having a diameter d4 so that the plate surface of the receiving member 16 is not visible.
Thereby, the appearance of the surface of the fireproof board 40 for curtain walls can be improved.

(Fourth embodiment)
As shown in FIG. 8A, the curtain wall fireproof board 44 according to the fourth embodiment is provided with two through holes 18 arranged side by side on the plate 12 described in the first embodiment. ing.
The nuts 14 described in the first embodiment are inserted into the two through holes 18 respectively. Both end faces of the two nuts 14 are joined to the receiving metal fitting 46.

  The metal fitting 46 is formed of a metal flat plate in a rectangular shape and rounded at its corners. Further, the plate member 12 is provided with counterbore 47 surrounding the two through holes 18, and a receiving metal fitting 46 is accommodated.

  Thus, since the board | plate material 12 of the fireproof board 44 for curtain walls is joined by the two nuts 14, the force added to each junction part can be made small. Thereby, the support performance of the fireproof board 44 for curtain walls can be improved.

  As shown in FIG. 8 (B), a curtain wall fireproof board 50 according to another embodiment has a counterbore 47 in the curtain wall fireproof board 44 having a counterbore depth that is equal to the thickness of the decorative plate 52. This is a configuration in which a counterbore 51 corresponding to the same outer dimension is added.

  That is, the plate member 12 is provided with two through holes 18, and the receiving metal fitting 46 is joined to the two nuts 14 inserted into the through holes 18. Further, the plate member 12 is provided with a counterbore 47 (first counterbore) and a counterbore 51 (second counterbore), and the counterbore 47 accommodates a receiving metal fitting 46.

The counterbore 51 is provided at a position shallower than the counterbore 47, and has a larger area than the counterbore 47. The counterbore 51 is covered with a decorative plate 52 (second decorative plate) formed of the same material as the plate material 12 so that the plate surface of the metal fitting 46 is not visible.
Thereby, the appearance of the surface of the fireproof board 50 for curtain walls can be improved.

As shown in FIG. 9A, the curtain wall fireproof board 54, which is another example, includes a total of four fired boards arranged side by side in two, two on the plate 12 described in the first embodiment. A through hole 18 is provided.
The nuts 14 described in the first embodiment are inserted into the four through holes 18, respectively. One end face of each of the four nuts 14 is joined to the receiving metal piece 56.

  The receiving metal piece 56 is a metal flat plate formed in a disk shape. Further, the plate member 12 is provided with counterbore 57 surrounding the four through holes 18, and a receiving metal fitting 56 is accommodated.

  Thus, since the board | plate material 12 of the fireproof board 54 is joined with four nuts, the force added to each joined part can be made small. Thereby, the support performance of the fireproof board 54 for curtain walls can be improved.

  Further, as shown in FIG. 9B, a curtain wall fireproof board 58 according to another embodiment has a counterbore 57 in the above fireproof board 54 that has a counterbore depth increased by the thickness of the decorative board 60. In addition, a counterbore 59 corresponding to the same outer dimensions is added.

  That is, the plate material 12 is provided with four through holes 18, and the receiving metal fitting 56 is joined to the four nuts 14 inserted into the through holes 18. Further, the plate member 12 is provided with a counterbore 57 (first counterbore) and a counterbore 59 (second counterbore).

The counterbore 59 is provided at a position shallower than the counterbore 57 and has a larger area than the counterbore 57. The counterbore 59 is covered with a decorative plate 60 (first decorative plate) formed of the same material as the plate material 12 so that the plate surface of the metal fitting 56 is not visible.
Thereby, the appearance of the surface of the fireproof board 58 for curtain walls can be improved.

As shown in FIG. 10A, a curtain wall fireproof board 62, which is another embodiment, uses a metal fitting 64 in the fireproof board 54 shown in FIG. 9A described above as a metal fitting 64 having a different shape. It is a configuration.
That is, the plate member 12 is provided with a total of four through-holes 18 arranged side by side and in two stages. The nuts 14 described in the first embodiment are inserted into the four through holes 18, respectively. One end face of each of the four nuts 14 is joined to the receiving metal fitting 64.

  The metal fitting 64 is a metal flat plate formed in a rectangle, and its corners are rounded and chamfered. Further, the plate member 12 is provided with counterbore 65 surrounding the four through holes 18, and a receiving metal fitting 64 is accommodated.

  In this way, since the plate material 12 of the curtain wall fireproof board 62 is joined by the four nuts, the force applied to each joining portion can be reduced. Thereby, the support performance of the fireproof board 62 for curtain walls can be improved.

  Further, as shown in FIG. 10B, a curtain wall fireproof board 66 according to another embodiment has a counterbore 65 in the fireproof board 62 described above that has a counterbore depth increased by the thickness of the decorative board 68. In addition, a counterbore 67 having the same outer dimensions is added.

  That is, the plate member 12 is provided with four through holes 18, and the receiving metal fittings 64 are joined to the four nuts 14 inserted into the through holes 18. The plate member 12 is provided with a counterbore 65 (first counterbore) and a counterbore 67 (second counterbore). The counterbore 65 contains a receiving metal 64.

The counterbore 67 is provided at a position shallower than the counterbore 65 and has a larger area than the counterbore 65. The counterbore 67 is closed by a decorative board 68 (first decorative board) made of the same material as the plate material 12 so that the plate surface of the receiving member 46 is not visible.
Thereby, the appearance of the surface of the fireproof board for curtain wall 66 can be improved.

  Moreover, as shown in FIG. 11, the fireproof board 70 for curtain walls which is another Example has the fireproof board 22 demonstrated in 2nd Embodiment.

A second decorative plate 72 that covers the entire surface of the plate material 12 is bonded to the surface of the fireproof board 22 on the side where the metal fitting 16 is housed by an adhesive 24.
Thus, by covering the whole surface of the board | plate material 12 with the 2nd decorative board 72, fireproof performance can be improved, without impairing the aesthetics of a building.

(Fifth embodiment)
As shown in FIGS. 12 and 13, the fireproof board support structure 74 according to the fifth embodiment includes the curtain wall fireproof board 10 described in the first embodiment.

  The curtain wall fireproof board 10 is arranged with the insertion opening side of the nut 14 facing the building side (in the direction of arrow A), and the bolt 80 inserted into the mounting hole 79 of the mounting bracket 78 and the nut 14 are screwed together. Is supported.

  The mounting bracket 78 is formed by bending a metal flat plate into an L shape, and is fixed to the upper surface of a slab 76, which is a structural member of a building, with bolts 82 with one flat plate portion facing in the horizontal direction.

  A flat plate portion in the vertical direction of the mounting bracket 78 is raised along the plate material 12, and a mounting hole 79 is provided at the tip portion. Bolts 80 are inserted into the mounting holes 79 and screwed into the nuts 14 to support the curtain wall fireproof board 10.

  A gap having a width L4 is generated between the tip 76E of the slab 76 and the plate 12 of the curtain wall fireproof board 10. An interlayer blocking plate 84 extending from the lower surface of the slab 76 to the plate material 12 is attached below the gap. And between the metal fitting 78 attached on the interlayer closing plate 84 and the upper surface of the slab 76, the rock wool 86 which fills the gap is filled.

  Thus, the curtain wall refractory board 10 can be directly attached to the mounting bracket 78 by using the nut 14 embedded in advance in the plate member 12, so that workability at the construction site is improved.

  Further, since the fireproof board 10 is directly supported by the mounting bracket 78 fixed to the slab 76, a conventional method of sandwiching it in an aluminum frame (not shown) or a method of joining with an insert nut from one side (for example, FIG. 17). In comparison with this, the support strength of the curtain wall fireproof board 10 can be increased.

  Further, even if an external force such as wind or earthquake acts on the curtain wall fireproof board 10, the curtain wall fireproof board 10 is sandwiched and attached from both sides by the receiving metal 16 and the mounting bracket 78. The external force received by the board 10 is dispersed, and the force acting on the curtain wall fireproof board 10 can be reduced.

  In addition, although the above description was performed using the curtain wall fireproof board 10, the description is not limited to the curtain wall fireproof board 10, and is described in the second to fourth embodiments. The curtain wall fireproof boards 22, 26, 32, 36, 44, 50, 54, 58, 62, 66, and 70 can be mounted in the same manner, and the same effects can be obtained.

  As shown in FIG. 14, a fireproof board support structure 88 according to another embodiment includes the curtain wall fireproof board 10 and the mounting bracket 78 in the fireproof board support structure 74 described above.

  That is, the curtain wall fireproof board 10 is arranged with the insertion opening side of the nut 14 facing the building side (the direction of the arrow A), and the bolt 80 and the nut 14 inserted into the mounting hole 79 of the mounting bracket 78 are screwed. Are combined. The mounting metal fitting 78 is joined to the housing side metal fitting 90 and the bolt 92, and the housing side metal fitting 90 is fixed to the slab 76 and the bolt 82.

  The housing side metal fitting 90 is formed by bending a metal flat plate twice into an L shape, and has two parallel flat plate portions having different heights. One flat plate portion of the housing side metal fitting 90 is fixed to the upper surface of the slab 76 facing sideways, and the other flat plate portion is joined to the mounting metal fitting 78 similarly horizontally.

  Thereby, even if it is necessary to adjust the installation position of the curtain wall fireproof board 10 (V2 in the vertical direction and H2 in the horizontal direction), it can be easily handled by changing the dimensions of the housing side metal fitting 90.

(Sixth embodiment)
As shown in FIG. 15, the fireproof board support structure 94 according to the sixth embodiment is the same as the curtain wall fireproof board support structure 74 described in the fifth embodiment. 78, a fireproof board holding member 96 is added.

  The fireproof board holding member 96 is formed of a metal flat plate and has an end portion 96L bent in an L shape. The end portion 96L holds the lower end surface of the curtain wall fireproof board 10 from below. The end portion 96L has a horizontal portion having a width corresponding to the thickness T1 of the plate material 12, the tip is raised again, and sandwiches both surfaces of the plate material 12. Thereby, the movement in the horizontal direction (X direction of illustration) of the fireproof board 10 for curtain walls can be suppressed.

  The rising portion of the fireproof board holding member 96 rises along the plate 12 of the curtain wall fireproof board 10, and a mounting hole 102 into which the bolt 80 is inserted is provided at the upper portion.

  The mounting hole 79 of the mounting bracket 78 and the mounting hole 102 of the fireproof board holding member 96 are overlapped, and the bolt 80 is inserted into the mounting hole 79 and the mounting hole 102 and screwed into the nut 14. The lower end portion of the curtain wall fireproof board 10 can be held.

  That is, since the curtain wall fireproof board 10 is held at the two positions of the lower end portion and the through hole 18, an excessive burden is not applied to the through hole 18 even when the curtain wall fireproof board 10 is large and heavy. Can be installed on. Thereby, the support performance of the fireproof board for curtain walls can be improved.

  The width of the fireproof board holding member 96 does not have to be the same as the width of the fireproof board 10 for curtain wall, and may be configured in a strip shape with a predetermined width. The other configuration is the same as that of the fifth embodiment.

(Seventh embodiment)
As shown in FIG. 16, the fireproof board support structure 100 according to the seventh embodiment is the fireproof board support structure 94 described in the sixth embodiment, and includes a plurality of shock absorbers around the curtain wall fireproof board 10. The material 98 is inserted.

The cushioning material 98 is formed by molding a rubber material into a plate shape, for example, and is inserted in a place where a load from the outside is easily received, such as a lower portion, a side surface of the curtain wall fireproof board 10, and a mounting portion of the nut 14. .
The fireproof board holding member 104 is sized so as to support the fireproof board 10 and the cushioning material 98 by changing the folding position 104L to be folded into an L shape according to the thickness of the cushioning material 98.

  Thereby, it is possible to prevent the curtain wall fireproof board 10 and the fireproof board holding member 104 from coming into direct contact with each other, and even if the curtain wall fireproof board 10 is vibrated by wind or earthquake, the curtain wall fireproof board 10 is damaged. Can be prevented.

(Eighth embodiment)
As shown in FIG. 17, the fireproof board support structure 122 according to the eighth embodiment is the same as the fireproof board support structure 74 described in the fifth embodiment. A fireproof board holding member 124 is added between them.

  The fireproof board holding member 124 is formed of a metal flat plate and has upper and lower end portions 124L bent in an L shape. The upper and lower ends 124L hold the back surface, upper end surface, and lower end surface of the curtain wall fireproof board 10 from the outside. The upper and lower ends 124 </ b> L have a horizontal portion having a width corresponding to the thickness T <b> 1 of the plate member 12, and the tip is bent again toward the front surface side of the curtain wall fireproof board 10 to sandwich both surfaces of the plate member 12. Thereby, the movement of the fireproof board 10 for curtain walls in the horizontal direction (X direction shown in the figure) and the vertical direction (Y direction shown in the figure) can be suppressed.

  The rising portion of the fireproof board holding member 124 rises along the plate 12 with the back surface of the curtain wall fireproof board 10, and a mounting hole 126 into which the bolt 80 is inserted is provided in the back surface portion of the fireproof board holding member 124. Yes.

  The mounting hole 79 of the mounting bracket 78 and the mounting hole 126 of the fireproof board holding member 124 are overlapped, and the bolt 80 is inserted into the mounting hole 79 and the mounting hole 126 and screwed into the nut 14. The upper end and lower end of the curtain wall fireproof board 10 can be held from the outside.

  That is, since the curtain wall fireproof board 10 is held at the upper end portion, the lower end portion, and the through hole 18, even if the curtain wall fireproof board 10 is large and heavy, an excessive burden is imposed on the through hole 18. Can be installed without applying. Thereby, the force which acts on the fireproof board 10 for curtain walls can be made small.

  Note that the width of the fireproof board holding member 124 does not have to be the same as the width of the curtain wall fireproof board 10, and may be configured in a strip shape with a predetermined width. The other configuration is the same as that of the fifth embodiment.

(Ninth embodiment)
As shown in FIG. 18, the fireproof board support structure 130 according to the ninth embodiment is the same as the fireproof board support structure 122 described in the eighth embodiment. The material 98 is inserted.

The cushioning material 98 is formed by, for example, a rubber material in a plate shape, and is placed in a place where it is easy to receive a load from the outside, such as a lower portion, a front surface, a rear surface, and a nut 14 attachment portion of the curtain wall fireproof board 10. Has been inserted.
The fireproof board holding member 132 supports the curtain wall fireproof board 10 and the cushioning material 98 by changing the folding position of the upper end 132L and the lower end 132L in an L shape according to the thickness of the cushioning material 98. The dimensions are as possible.

  Thereby, it is possible to prevent the curtain wall fireproof board 10 and the fireproof board holding member 132 from coming into direct contact with each other, and even if the curtain wall fireproof board 10 is vibrated due to wind or earthquake, the curtain wall fireproof board 10 is damaged. Can be prevented.

It is a figure which shows the basic composition of the fireproof board for curtain walls which concerns on the 1st Embodiment of this invention. It is a figure which shows the local cross section of the through-hole position of the fireproof board for curtain walls which concerns on the 1st Embodiment of this invention. It is a figure which shows the local cross section of the through-hole position of the fireproof board for curtain walls which concerns on the 2nd Embodiment of this invention. It is a figure which shows the local cross section of the through-hole position of the fireproof board for curtain walls which concerns on the 2nd Embodiment of this invention. It is a figure which shows the local cross section of the through-hole position of the fireproof board for curtain walls which concerns on the 2nd Embodiment of this invention. It is a figure which shows the local cross section of the through-hole position of the fireproof board for curtain walls which concerns on the 3rd Embodiment of this invention. It is a figure which shows the local cross section of the through-hole position of the fireproof board for curtain walls which concerns on the 3rd Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board for curtain walls which concerns on the 4th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board for curtain walls which concerns on the 4th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board for curtain walls which concerns on the 4th Embodiment of this invention. It is a figure which shows the local cross section of the through-hole position of the fireproof board for curtain walls which concerns on the 4th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board support structure which concerns on the 5th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board support structure which concerns on the 5th Embodiment of this invention. It is a figure which shows the other basic composition of the fireproof board support structure which concerns on the 5th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board support structure which concerns on the 6th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board support structure which concerns on the 7th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board support structure which concerns on the 8th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board support structure which concerns on the 9th Embodiment of this invention. It is a figure which shows the basic composition of the fireproof board support structure of a prior art example.

Explanation of symbols

10 Fireproof board for curtain wall 12 Plate material 14 Nut 16 Receiving bracket (receiving member)
18 Through hole 20 Counterbore 24 Adhesive (functional material)
28 Buffer material (functional material)
34 Seal members (functional materials)
38 First decorative plate 42 Second decorative plate 48 Spot facing 74 Fireproof board support structure 76 Slab (building structural member)
78 Mounting bracket 96 Fireproof board holding member 98 Cushioning material

Claims (11)

A fire-resistant plate with a through hole;
A nut inserted into the through hole;
A receiving member joined to the end surface of the nut and abutting against the plate;
Curtain wall for fireproof board.   The fireproof board for a curtain wall according to claim 1, wherein a functional material is filled between a peripheral wall of the through hole and an outer peripheral surface of the nut.   The fireproof board for a curtain wall according to claim 1 or 2, wherein the plate member is provided with a spot facing for receiving the receiving member. The counterbore has a first counterbore that houses the receiving member, and a second counterbore provided at a position shallower than the first counterbore, and the diameter of the second counterbore is equal to the first counterbore, or Larger than the first counterbore,
The fireproof board for a curtain wall according to claim 3, wherein the second spot face is covered with a first decorative board.   4. The curtain wall fireproof board according to claim 3, wherein the counterbore has a depth in which a plate surface of the receiving member and a surface of the plate member are flush with each other, and the entire surface of the plate member is covered with a second decorative plate.   The fireproof board for a curtain wall according to any one of claims 1 to 5, wherein the fireproof board material used for the fireproof board for the curtain wall is a fiber mixed calcium silicate board. The fireproof board according to any one of claims 1 to 6,
A mounting bracket fixed to the structural member of the building;
A bolt inserted into a mounting hole formed in the mounting bracket, and screwed into the nut;
Having fireproof board support structure. A holding portion for holding the lower end face of the curtain wall fireproof board from the lower side at one end, and a fireproof board holding member provided with a through hole into which the bolt is inserted at the other end;
The fireproof board support structure according to claim 7, wherein a bolt inserted into the mounting hole passes through the through hole. The back surface of the curtain wall fireproof board is supported, and a back surface portion provided with a through hole into which the bolt is inserted is formed at the upper end portion and the lower end portion of the back surface portion, and the upper portion of the curtain wall fireproof board is formed. A fireproof board holding member having a holding part for holding the end face and the lower end face from the outside;
The fireproof board support structure according to claim 7, wherein a bolt inserted into the mounting hole passes through the through hole.   The fireproof board support structure according to claim 8 or 9, wherein a cushioning material is provided between the fireproof board holding member and the curtain wall fireproof board.   The fireproof board support structure according to any one of claims 7 to 10, wherein the fireproof board used for the curtain wall fireproof board is a fiber-mixed calcium silicate board.

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