JP2014177778A - Fireproof structure of wall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fireproof structure of a wall capable of making operations for covering a box with incombustible thermal insulation materials easy.SOLUTION: In an outer wall part 10 of a building, an inner wall 12 is installed on an indoor side. The inner wall 12 includes an inner wall surface material 18 and an inner wall frame 19 which is installed on the back side of the inner wall surface material 18. The inner wall frame 19 includes a pair of upper and lower runners 21 and 22 and a plurality of studs 23 disposed between the runners 21 and 22. In the inner wall surface material 18, an opening 32 is formed. A monitor 31 is attached to the opening 32. A square metal-made box 33 is installed on the back side of the inner wall surface material 18 so as to cover the opening 32. A box 33 is fixed to the studs 23 in a state that the lateral face of the box overlaps the lateral faces of the studs 23.

Description

  The present invention relates to a fireproof structure for a wall.

  Generally, when a device such as an outlet is attached to the wall of a building, the device is attached to an opening formed in a wall surface material. In this case, in order to prevent the spread of fire through the opening in the event of a fire, a predetermined fire prevention process is performed on the opening.

  When this type of fire prevention treatment is performed, a metal box is provided so as to cover the opening on the back side of the wall material, and the outside of the box is further covered with a nonflammable heat insulating material such as glass wool (See, for example, Patent Document 1). Patent Document 1 discloses a configuration in which each surface of a box having an open front surface, that is, an upper surface, a lower surface, each side surface, and a rear surface is covered with a heat insulating material.

JP 2002-209321 A

  However, in the configuration of the above-mentioned Patent Document 1, it is necessary to cover each surface of the box with a heat insulating material.

  This invention is made | formed in view of the said situation, and makes it the main objective to provide the fireproof structure of the wall which can make the operation | work which covers a box with a heat insulating material easy.

  In order to solve the above-mentioned problem, a fireproof structure for a wall according to a first aspect of the present invention includes a wall surface material and a plurality of vertical members fixed to the back surface side of the wall surface material and serving as a foundation for the wall surface material. Is a fireproof structure of a wall in which an opening for attaching a device is formed, wherein the plurality of vertical members are formed of steel, and the back surface side of the wall surface material covers the opening. A rectangular box-shaped metal box is provided, and the box is fixed to the vertical member in a state where the side surface is superimposed on the side surface of the vertical member.

  According to this invention, since the vertical member provided in the back surface side of the wall surface material consists of steel materials, the vertical member itself has nonflammability. And since the metal box is fixed in a state where the side surface is overlapped with the side surface of the vertical member, the side surface side of the box is covered with a steel material, in other words, a non-combustible material, and fire resistance is ensured. Therefore, when the box is covered with the heat insulating material made of a non-combustible material, it is not necessary to cover the side surface, so that the work of covering the box with the heat insulating material can be facilitated.

  In the fireproof structure of the wall of the second invention, in the first invention, a heat insulating material made of a non-combustible material is provided outside the box, and the heat insulating material includes an upper surface, a lower surface, a back surface of the box, and Each of the pair of side surfaces covers each surface other than the side surface on which the longitudinal members are overlapped.

  According to the present invention, the side surfaces of the vertical members made of steel are overlapped on the side surfaces where the vertical members are overlapped in the box, and each surface other than the side surfaces is covered with a heat insulating material made of a non-combustible material, respectively. Fire resistance can be ensured on each side of the box. In addition, as a heat insulating material, glass wool and rock wool are mentioned, for example.

  According to a fireproof structure for a wall of a third invention, in the first or second invention, the wall includes, as the wall surface material, a first wall surface material and a second wall surface material adjacent to each other in the wall width direction, The wall surface material is disposed with a position shifted from the second wall surface material toward the room side which is the surface side of the wall surface material, and the opening is formed in the first wall surface material, The said box is provided in the back surface side of 1 wall surface material, It is characterized by the above-mentioned.

  According to the present invention, since the first wall surface material is disposed at a position closer to the living room than the second wall surface material, the wall back space of the first wall surface material is more walled than the wall back space of the second wall surface material. Widely secured in the thickness direction. And since the opening part is formed with respect to the 1st wall surface material and the box is arrange | positioned at the wall back of the 1st wall surface material, arrangement | positioning of the box to a wall back, and also a heat insulating material are suitable. Can be done. In addition, since only a part of the wall surface material (first wall surface material) on the wall is arranged to shift the position on the room side, compared to the case where all the wall surface materials are arranged to shift the position on the room side, The box can be suitably installed while suppressing the room from becoming narrow.

  The fire-resistant structure of the wall of 4th invention is provided in the back surface side of the 1st vertical member provided in the back surface side of the said 1st wall surface material as said vertical material in the 3rd invention, and the said 2nd wall surface material. Each of the longitudinal members has one of a longitudinal dimension and a transverse dimension of the transverse section longer than the other, and the first longitudinal member has a transverse dimension thereof. The longitudinal direction of the surface is arranged with respect to the wall thickness direction of the first wall surface material, and the second longitudinal member is arranged with the longitudinal direction of the transverse section thereof directed toward the wall width direction of the second wall surface material. The first vertical member is provided so as to protrude from the second vertical member toward the living room side, and the first vertical wall member extends beyond the second wall member by the extension of the first vertical member. It is characterized by being shifted in position.

  According to the present invention, as the vertical member, one in which one of the vertical and horizontal dimensions in the cross section is longer than the other (for example, one in which the cross section is rectangular) is used. The first wall surface material is arranged to be shifted to the room side with respect to the second wall surface material by a relatively simple configuration in which the direction of the material is different between the first wall surface material side and the second wall surface material side. ing. Therefore, this configuration can be said to be a practically preferable configuration for obtaining the effect of the third invention.

  According to a fifth aspect of the present invention, there is provided the wall fireproof structure according to the fourth aspect, wherein the first longitudinal member and the second longitudinal member arranged adjacent to each other on the boundary side between the first wall surface material and the second wall surface material. Among these, the 1st vertical member has the overhang | projection part which protruded to the said room side rather than the said 2nd vertical material, The said 1st wall surface material and said 2nd are provided in the side surface of the said overhang | projection part. A wall connecting material made of gypsum board is attached to connect the wall surface material, and the box has the side surface overlapped with the side surface opposite to the wall connecting material in the projecting portion. It is fixed to a vertical member.

  According to the present invention, among the first vertical members and the second vertical members that are arranged adjacent to each other at the boundary between the first wall surface material and the second wall surface material, the first vertical member has a living room rather than the second vertical member. A wall connecting material that connects the first wall surface material and the second wall surface material is provided on the side surface of the protruding portion that protrudes to the side. Since the wall connecting material is formed of gypsum board, it has a predetermined fire resistance. And since the box is being fixed to the 1st vertical member in the state where the side was piled up on the side opposite to the wall connecting material in the overhang part, the overhang part which has fireproof performance in the side of the box concerned In this state, the (first longitudinal member) and the wall connecting material are provided to overlap each other. Thereby, the fireproof performance in the said side surface of a box can be improved. Moreover, in this case, since the side opposite to the box is the living room with the overhanging portion (and the wall connecting material) in between, the effect of suppressing the spread of fire from the side of the box into the wall is also obtained. It is done.

  According to a fireproof structure for a wall of a sixth invention, in any one of the first to fifth inventions, the longitudinal member is provided on both sides of the box, and the box is provided on each side surface facing each other. Are provided in a state of being superimposed on the side surfaces of the respective vertical members, and fixed to the respective vertical members.

  According to the present invention, the vertical members are provided on both sides of the box, and the both side surfaces of the box are superimposed on the side surfaces of the respective vertical members, so that fire resistance performance is ensured on each side surface of the box. be able to. Thereby, since it is not necessary to cover the both sides | surfaces of a box with a heat insulating material, the operation | work which covers a box with a heat insulating material can be made still easier.

The perspective view which shows the outer wall part of a building. The cross-sectional view which shows the structure of an outer wall part. The longitudinal cross-sectional view which shows the structure of an outer wall part. The perspective view which shows a box. The cross-sectional view which shows the structure of the outer wall part in other embodiment.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, a steel frame house constructed as a building by a frame construction method is embodied. Moreover, the building of this embodiment corresponds to the semi-refractory building according to the Building Standard Act. FIG. 1 is a perspective view showing an outer wall portion of a building. FIG. 2 is a cross-sectional view showing a configuration of the outer wall portion, and corresponds to a cross-sectional view taken along line AA of FIG. FIG. 3 is a longitudinal sectional view showing the configuration of the outer wall portion, and corresponds to the sectional view taken along the line BB in FIG.

  As shown in FIGS. 1 to 3, in a building such as a house, an outer wall portion 10 that partitions a living room X as an indoor space from the outside is provided with an outer wall 11 on the outdoor side, and an inner wall 12 is provided on the indoor side. Is provided. The outer wall 11 includes an outer wall surface material 13 that forms an outdoor surface, and an outer wall frame 14 that is fixed to the back surface side (indoor surface side) of the outer wall surface material 13. The outer wall surface material 13 is made of ceramic siding, and the outer wall frame 14 is made of a lightweight steel frame material having a U-shaped cross section. In addition, illustration of the outer wall 11 is abbreviate | omitted in FIG.

  The inner wall 12 includes an inner wall surface material 18 and an inner wall frame 19 fixed to the back surface side (outdoor surface side) of the inner wall surface material 18. The inner wall surface material 18 is made of a gypsum board having incombustibility, and a wall finishing material (not shown) such as a cloth for finishing the wall surface of the living room X is affixed to the surface (indoor side surface).

  The inner wall frame 19 includes a pair of upper and lower runners 21 and 22 and a plurality of studs 23 provided between the runners 21 and 22 at a predetermined interval. Here, the runners 21 and 22 correspond to cross members, and the stud 23 corresponds to a vertical member. Each of the upper and lower runners 21 and 22 is made of lightweight channel steel, and is disposed in a state in which the groove portions face each other vertically. The upper runner 21 is fixed to the ceiling with screws or the like, and the lower runner 22 is fixed to the floor with screws or the like.

  The stud 23 is made of a lightweight square steel pipe and has a rectangular cross section. The stud 23 is fixed to the runner 21 with a screw or the like with its upper end inserted into the groove of the upper runner 21, and the runner 22 with its lower end inserted into the groove of the lower runner 22. It is fixed with screws. The cross section of the stud 23 refers to a cross section in a direction orthogonal to the longitudinal direction of the stud 23.

  A plurality of inner wall frames 19 are provided side by side, and a plurality of inner wall surface materials 18 are attached to the indoor side of the inner wall frames 19 with screws or the like. Thereby, the inner wall 12 is formed. Further, as described above, since the inner wall surface material 18 constituting the inner wall 12 is made of gypsum board and the inner wall frame 19 (specifically, the runners 21 and 22 and the stud 23) is made of steel material, the inner wall 12 is made of a combination of noncombustible materials. It is constructed and fireproof performance is ensured as the entire inner wall 12.

  A wall insulation 25 is provided between the outer wall 11 and the inner wall 12. The wall heat insulating material 25 is formed into a plate shape (board shape) from a foam heat insulating material (hard heat insulating material), and is formed from, for example, isocyanurate foam. The wall heat insulating material 25 has a height dimension substantially the same as the height of the inner wall frame 19 and has a width dimension that spans the plurality of inner wall frames 19. The wall heat insulating material 25 is disposed between the outer wall frame 14 and the inner wall frame 19, and is disposed in a state where the plate surfaces are in contact with the frames 14 and 19, respectively.

  Here, in the present embodiment, a part of the inner wall 12 in the width direction is a soft wall portion 12a that is formed so as to protrude toward the living room X with respect to the other wall portions. Hereinafter, the configuration of the wall portion 12a will be described in comparison with a portion other than the wall portion 12a (hereinafter referred to as a general wall portion 12b). Further, in the following description, for the sake of convenience, “a” is given to the reference numerals of the members constituting the upper wall part 12a, and “b” is given to the reference numerals of the members constituting the general wall part 12b.

  First, the general wall portion 12b will be described. In the general wall portion 12b, the studs 23b of the inner wall frame 19b are arranged with the longitudinal direction of the transverse section thereof directed toward the wall width direction of the inner wall 12. The stud 23b has a lateral length L1 of 45 mm, for example, and a longitudinal length L2 of 65 mm, for example. Each runner 21b, 22b is formed to have a groove width that matches the length L1 of the stud 23b. An inner wall surface material 18b is attached to the inner wall frame 19b.

  On the other hand, in the prickly wall portion 12a, the stud 23a of the inner wall frame 19a is arranged with the longitudinal direction of the cross section thereof facing the wall thickness direction of the inner wall 12 (in other words, the indoor / outdoor direction). In the stud 23a, the length L3 in the short direction in the cross section thereof is set to the same length as the length L1 in the same direction of the stud 23b (L1 = L3), that is, set to 45 mm. The stud 23b has a length L4 in the longitudinal direction that is longer than a length L2 in the same direction of the stud 23b, for example, 100 mm. Each runner 21a, 22a is formed with a groove width that matches the length L4 of the stud 23a. An inner wall surface material 18a is attached to the inner wall frame 19a.

  The inner wall frame 19a and the inner wall frame 19b that are adjacent to each other are arranged such that the studs 23a and 23b arranged adjacent to each other are in contact with each other. The stud 23a is arranged with its outdoor side face aligned with the outdoor side face of the stud 23b in the wall thickness direction (indoor / outdoor direction). As a result, the stud 23a is provided so as to protrude toward the living room X (indoor) with respect to the stud 23b, and only the protruding portion (L4-L1) of the stud 23a (that is, only 55 mm) The wall surface material 18a is disposed with a position shifted (offset) closer to the living room X than the inner wall surface material 18b of the general wall portion 12b.

  In this case, the inner wall surface material 18a corresponds to the first wall surface material, and the inner wall surface material 18b corresponds to the second wall surface material. The stud 23a corresponds to the first vertical member, and the stud 23b corresponds to the second vertical member. Further, in the following, the portion of the stud 23a that projects from the stud 23 to the room X side is referred to as a projecting portion 28.

  Between the inner wall surface material 18a and the inner wall surface material 18b, there is provided an inner wall connecting material 26 that connects the two wall surfaces 18a and 18b. The inner wall connecting material 26 is made of a gypsum board having incombustible performance, like the inner wall material 18. The inner wall connecting member 26 is formed in a long flat plate shape having the same height as the inner wall member 18 and having the same width as the projecting dimension (L4-L1) of the projecting portion 28. The inner wall connecting material 26 is attached to the side surface of the overhanging portion 28 of the stud 23a with a screw or the like, and a wall finishing material (not shown) such as a cloth is attached to the surface thereof.

  In the inner wall frame 19a, a frame end stud 23a (hereinafter, referred to as a stud 23X in some cases) disposed adjacent to (abuts with) the stud 23b of the inner wall frame 19b, and a stud 23a disposed adjacent to the stud 23X (hereinafter referred to as a stud 23X). Hereinafter, the interval P1 between the studs 23Y) is set smaller than the interval P2 between the other studs 23a. Specifically, the space between the studs 23X and 23Y is an arrangement space in which a box 33 to be described later is disposed. Therefore, the interval P1 between the studs 23X and 23Y is large according to the lateral width of the box 33. Is set.

  By the way, HEMS (home energy management system) which controls the power supply in a building is introduced in the building of this embodiment, and the monitor 31 for performing various settings and display regarding the power supply by the HEMS is the inner wall 12. It is attached to the cover wall 12a. The monitor 31 includes a touch panel type operation panel 31a having a liquid crystal display, and a main body 31b provided on the back side of the operation panel 31a. The monitor 31 is disposed in a state in which the main body 31b is inserted into a rectangular opening 32 formed in the inner wall surface material 18a of the upper wall 12a. The opening 32 is formed at a position corresponding to between the adjacent studs 23X and 23Y, and communicates the living room X and the space between the studs 23X and 23Y.

  A predetermined fireproofing process is applied to the opening 32 on the back surface side of the inner wall surface material 18a. In the present embodiment, the inner wall 12 is included in a portion where there is a risk of fire spread under the Building Standard Law, and a predetermined fireproof treatment required for that portion is performed. Hereinafter, such a fireproof structure will be described.

  A metal box 33 is provided on the back side of the inner wall surface material 18a so as to cover the opening 32 from the back side of the wall. FIG. 4 shows a perspective view of the box 33. The box 33 is formed in a square box shape (hexahedron) from a steel plate, and is specifically configured by assembling a plurality of steel plates into a square box shape by welding, screws, or the like. The box 33 has a lateral width (length in the wall width direction) set to the same size as the interval P1 between the adjacent studs 23X and 23Y, and is disposed so as to be sandwiched between the studs 23a. .

  The box 33 connects the front plate portion 33a provided in contact (opposite) with the back surface of the inner wall surface material 18a, the back plate portion 33b facing the front plate portion 33a, and the plate portions 33a and 33b. An upper plate portion 33c, a lower plate portion 33d, and a pair of side plate portions 33e. A rectangular opening 35 is formed in the front plate portion 33a, and the opening 35 has the same shape and the same size as the opening 32 of the inner wall surface material 18a. The box 33 is disposed in a state where the opening 35 is aligned with the opening 32 of the inner wall surface material 18a.

  The monitor 31 is disposed in a state in which the main body portion 31 b is accommodated in the box 33 through the openings 32 and 35, and the peripheral portion of the operation panel portion 31 a is the front plate portion of the box 33 in the disposed state. It is being fixed to 33a with the screw etc. via the inner wall surface material 18a.

  An insertion hole 37 through which the connection wiring 34 connected to the monitor 31 is inserted is formed in the lower plate portion 33d. The connection wiring 34 includes various wirings such as a power supply line, a signal line, and a communication line. In FIG. 3, these wirings are illustrated as one line for convenience. The connection wiring 34 is disposed inside the outer wall 10, specifically, between the inner wall surface material 18 a and the wall heat insulating material 25, and is drawn into the box 33 through the insertion hole 37 and connected to the monitor 31. Yes.

  Each side plate portion 33e has a vertical height greater than the separation distance between the upper plate portion 33c and the lower plate portion 33d, and a part of the side plate portion 33e extends upward from the upper plate portion 33c. The portion extends below the lower plate portion 33d. Each extending portion 41 is formed with a hole 38. The hole portion 38 is formed in a long hole shape that is long in the width direction of the side plate portion 33e (in other words, the wall thickness direction). However, the hole 38 may have a round hole shape.

  The box 33 is disposed in such a manner that the side plate portions 33e on both sides (in other words, the side surfaces 51 on both sides) are superimposed on the side surfaces of the studs 23X and 23Y (specifically, the side surfaces facing the wall width direction). In the installed state, the studs 23X and 23Y are fixed with screws 43. More specifically, the box 33 is fixed in a state where the entire side surface 51 is superposed on the side surfaces of the studs 23X and 23Y. The screw 43 is screwed into the studs 23X and 23Y while being inserted into the hole 38 of the box 33.

  The box 33 has a length in the wall thickness direction (in other words, a depth dimension) shorter than a length L4 in the same direction of the stud 23a. Specifically, the extension dimension of the projecting portion 28 of the stud 23X. The length is the same as (L4-L1). In this case, a part of each of the studs 23X and 23Y extends to the outdoor side from the box 33 to become an extended portion 46, and the outdoor side surface of the extended portion 46 abuts against the wall heat insulating material 25. Yes.

  Outside the box 33, a heat insulating material 36 made of glass wool as a non-combustible material is provided. The heat insulating material 36 is formed in a plate shape having a predetermined thickness, and its (natural state) thickness dimension is set to 50 mm, for example. The width of the heat insulating material 36 is substantially the same as the width of the box 33.

  The heat insulating material 36 is provided so as to cover the upper plate portion 33c (upper surface 52), the back plate portion 33b (back surface 53), and the lower plate portion 33d (lower surface 54) of the box 33 in a state of being folded in a U-shape. ing. More specifically, the heat insulating material 36 covers the entire upper surface 52, the entire back surface 53, and the entire lower surface 54 of the box 33. The heat insulating material 36 is bonded and fixed to each surface 52 to 54 of the box 33 with a double-sided tape. However, the fixing of the heat insulating material 36 to the box 33 may employ another fixing method such as attachment with an adhesive.

  The heat insulating material 36 is disposed in a state of being sandwiched between the studs 23X and 23Y, and both end portions in the width direction are in close contact with the side surfaces of the studs 23X and 23Y, respectively. The back surface of the heat insulating material 36 is in close contact with the plate surface of the wall heat insulating material 25.

  As mentioned above, according to the structure of this embodiment explained in full detail, the following outstanding effects are acquired.

  An opening 32 for attaching the monitor 31 was formed in the inner wall surface material 18a, and a box 33 was provided so as to cover the opening 32. And the box 33 was fixed to the said stud 23a in the state which overlapped the side surface 51 with the side surface of the stud 23a which consists of steel materials. In this case, the side surface 51 side of the box 33 is covered with a steel material, in other words, an incombustible material, and fire resistance is ensured. Therefore, when the box 33 is covered with the heat insulating material 36 made of a non-combustible material, the side surface 51 does not have to be covered, so that the work of covering the box 33 with the heat insulating material 36 can be facilitated.

  Specifically, the studs 23a are arranged on both sides of the box 33, and the box 33 is fixed to the studs 23a in a state where the side surfaces 51 of the boxes 33 are overlapped with the side surfaces of the studs 23a. In this case, fire resistance can be ensured on each side 51 of the box 33, so that both sides 51 of the box 33 need not be covered with the heat insulating material 36. Thereby, the operation | work which covers the box 33 with the heat insulating material 36 can be made still easier.

  A heat insulating material 36 was provided outside the box 33, and the surfaces other than the side surfaces 51, that is, the upper surface 52, the back surface 53, and the lower surface 54 were covered with the heat insulating material 36, respectively. Thereby, fire resistance performance can be ensured in each surface 51-54 of box 33, respectively.

  Since the inner wall 12 is provided with two inner wall surfaces 18a and 18b adjacent to each other in the wall width direction, and the inner wall surface material 18a is shifted from the inner wall surface material 18b toward the living room X, the wall of the inner wall surface material 18a is disposed. The back space can be secured wider in the wall thickness direction than the wall back space of the inner wall surface material 18b. And since the opening part 32 was formed in the inner wall surface material 18a and the box 33 was arrange | positioned in the back surface side of the inner wall surface material 18a, arrangement | positioning of the box 33 further to the wall back and also the heat insulating material 36 can be performed suitably. it can. In addition, since only a part of the inner wall surface material 18a in the inner wall 12 is shifted to the living room X side, the living room is compared with the case where all the inner wall surface materials 18a and 18b are shifted to the living room X side. The box 33 can be suitably installed while suppressing X from becoming narrow.

  As the stud 23, one having a rectangular cross section (that is, having different vertical and horizontal dimensions) is used. On the back side of the inner wall surface material 18a, the stud 23a is disposed with its longitudinal direction facing the wall thickness direction. On the back side of the wall surface material 18b, the stud 23b is disposed so that the longitudinal direction thereof is directed in the wall width direction, so that the stud 23a is projected to the room X side from the stud 23b. And by the overhang | projection, the inner wall surface material 18a was shifted and arrange | positioned rather than the inner wall surface material 18b at the room X side. In this case, the inner wall surface material 18a is arranged at a position shifted to the living room X side with respect to the inner wall surface material 18b with a relatively simple configuration in which the directions of the studs 23a and 23b are different between the inner wall surface materials 18a and 18b. Can do. Therefore, it can be said that this is a practically preferable configuration for obtaining the above-described effect of suitably installing the box 33 while suppressing the room X from being narrowed.

  In addition, since the studs 23a and 23b have the same length in the short direction (L1 = L3), the above-described inner wall structure is constructed using the studs 23a and 23b of standard products. This makes it easy to obtain cost advantages.

  Among the studs 23a and 23b adjacent to each other in the inner wall frames 19a and 19b arranged adjacent to each other, the inner wall surface materials 18a and 18b are formed on the side surfaces of the protruding portions 28 that protrude from the stud 23b to the living room X side. 18b was connected and the inner wall connecting material 26 which consists of a gypsum board was provided. And the box 33 was arrange | positioned in the state which accumulated the side surface 51 on the side surface on the opposite side to the inner wall connecting material 26 in the overhang | projection part 28 of the stud 23a, and was fixed to the stud 23a in the arrangement | positioning state. In this case, on the side surface 51 side of the box 33, the overhanging portion 28 (stud 23a) having fire resistance and the inner wall connecting material 26 are provided so as to overlap with each other. Fire resistance can be increased. Moreover, in this case, since the side opposite to the box 33 is the living room X across the overhanging portion 28 and the inner wall connecting material 26, it is possible to suppress the spread of fire from the side surface 51 side of the box 33 into the wall. An effect is also obtained.

  The present invention is not limited to the above embodiment, and may be implemented as follows, for example.

  (1) In the above embodiment, the studs 23a are arranged on both sides of the box 33, and the boxes 33 are fixed to the studs 23a. The stud 23a may be disposed only on one side, and the box 33 may be fixed only to the stud 23a. Also in this case, the box 33 is covered with the heat insulating material 36 because the side surface 51 does not need to be covered with the heat insulating material 36 by fixing the box 33 with the side surface 51 superimposed on the side surface of the stud 23a. Work can be facilitated.

  (2) Although glass wool is used as the heat insulating material 36 made of a non-combustible material in the above embodiment, rock wool may be used instead. Moreover, the thickness of the heat insulating material 36 does not necessarily need to be 50 mm, and the thickness may be arbitrary as long as it is 30 mm or more.

  (3) In the above-described embodiment, a part of the inner wall 12 in the width direction is the squeezed wall part 12a. However, the entire width of the inner wall 12 may be formed with the same thickness as the squeezed wall part 12a. For example, as shown in FIG. 5A, each stud 23 provided on the back side of each inner wall surface material 18 in the inner wall 50 may be arranged such that the longitudinal direction of the cross section faces the wall thickness direction. . In this case, since the wall space of the inner wall surface material 18 can be secured widely in the wall thickness direction in the entire wall width direction of the inner wall 50, the box 33 and thus the monitor 31 can be arranged in a suitable arrangement on the wall wall. The degree of freedom regarding the arrangement can be increased.

  (4) In the above embodiment, the overhanging dimension (L4-L1) of the upper wall 12a is 55 mm, but may be 100 mm or more as shown in FIG. In the inner wall 60 shown in FIG. 5B, the inner wall frame 61a is arranged such that the outdoor side surface of the stud 62a is shifted to the living room X side from the outdoor side surface of the stud 62b of the inner wall frame 61b. For this reason, the projecting dimension of the projecting portion 63 of the stud 62a is larger than the projecting dimension (L4-L1) of the above-described embodiment by the amount of the positional deviation. In this case, it is possible to use the stepped portion (skinning wall) such as installing the storage shelf 65 (furniture) adjacent to the stepped portion (inner wall connecting material 26) between the top wall 60a and the general wall portion 60b.

  Moreover, you may provide the general wall part 60b in the both sides on both sides of the inner wall 60 which pinched the softening wall part 60a. For example, as shown in FIG. 5 (b), the inner wall frame 61a is configured to include two adjacent studs 62a and a pair of upper and lower runners (not shown) that connect the two studs 62a. And the inner wall surface material 64a is attached to the indoor side of the inner wall frame 61a. Then, it is conceivable to arrange the inner wall frames 61b of the general wall portion 60b on both sides of the inner wall frame 61a and attach the inner wall surface material 64b to the indoor side of each of the inner wall frames 61b. In this case, the inner wall surface material 64a is arranged so as to be shifted to the living room X side with respect to the inner wall surface materials 64b on both sides thereof. Therefore, it is possible to cover only the portion of the inner wall 60 where the box 33 is installed behind the wall, and it is possible to further suppress the room X from becoming narrow.

  (5) In the above embodiment, the stud 23 is formed of a lightweight square steel pipe, but it may be formed of other steel materials such as a grooved steel with a lip. In any case, it is sufficient that the box 33 can be fixed to the stud 23 with the side surface 51 overlapped with the side surface of the stud 23.

  (6) In the above embodiment, the wall fireproof structure of the present invention has been described by taking the case where the HEMS monitor 31 (corresponding to a device) is attached to the inner wall 12 as an example. However, when other devices such as an outlet are attached, A structure may be applied.

  (7) In the above embodiment, the application example of the steel frame construction method to a building has been described. However, the present invention can also be applied to a building having another structure such as a building constructed of a steel house.

  DESCRIPTION OF SYMBOLS 10 ... Outer wall part, 12 ... Inner wall as a wall, 18 ... Inner wall surface material as a wall surface material, 18a ... Inner wall surface material as a first wall surface material, 18b ... Inner wall surface material as a second wall surface material, 19 ... Inner wall frame 23 ... Stud as a vertical member, 23a ... Stud as a first vertical member, 23b ... Stud as a second vertical member, 26 ... Inner wall connecting member as a wall connecting member, 28 ... Overhang, 31 ... As a device 32 ... opening, 33 ... box, 36 ... heat insulating material, 51 ... side surface, 52 ... upper surface, 53 ... back surface, 54 ... lower surface, X ... living room.

Claims (6)

The wall material has a plurality of vertical members fixed to the back surface side of the wall material and serving as a foundation for the wall material, and the wall material has a fire-resistant structure of a wall in which an opening for attaching a device is formed. There,
The plurality of vertical members are formed of steel,
On the back side of the wall material, a rectangular box-shaped metal box is provided so as to cover the opening,
The fireproof structure of a wall, wherein the box is fixed to the vertical member in a state where the side surface is overlapped with the side surface of the vertical member. On the outside of the box, a heat insulating material made of non-combustible material is provided,
The said heat insulating material has each covered each surface other than the side surface on which the said vertical member was piled up among each of the upper surface of a said box, a lower surface, a back surface, and each pair of side surfaces. Wall fireproof structure. The wall includes a first wall surface material and a second wall surface material adjacent to each other in the wall width direction as the wall surface material,
The first wall surface material is disposed at a position shifted from the second wall surface material on the side of the room that is the surface side of the wall surface material,
The fireproof structure for a wall according to claim 1 or 2, wherein the opening is formed in the first wall surface material, and the box is provided on a back surface side of the first wall surface material. As the longitudinal member, provided with a first longitudinal member provided on the back surface side of the first wall surface material, and a second longitudinal member provided on the back surface side of the second wall surface material,
Each of these vertical members is longer than the other one of the vertical and horizontal dimensions of the cross section,
The first longitudinal member is arranged with the longitudinal direction of the transverse section thereof directed toward the wall thickness direction of the first wall surface member,
The second longitudinal member is arranged with the longitudinal direction of the transverse section thereof directed toward the wall width direction of the second wall surface member,
The first vertical member is provided so as to protrude toward the living room side from the second vertical member, and the first wall member is positioned closer to the living room side than the second wall member by the extension of the first vertical member. The fireproof structure for a wall according to claim 3, wherein the fireproof structure is arranged so as to be shifted. Of the first longitudinal member and the second longitudinal member disposed adjacent to each other on the boundary side between the first wall member and the second wall member, the first longitudinal member is more than the second longitudinal member. It has a projecting part that projects to the room side,
On the side surface of the overhanging portion, a wall connecting material made of gypsum board is attached to connect the first wall surface material and the second wall surface material,
5. The wall according to claim 4, wherein the box is fixed to the first longitudinal member in a state in which a side surface of the box is overlapped with a side surface opposite to the wall connecting member in the overhanging portion. Fireproof structure. The vertical members are respectively provided on both sides of the box,
6. The box according to claim 1, wherein the box is provided in a state in which the side surfaces facing each other are overlapped with the side surfaces of the longitudinal members, and is fixed to the longitudinal members. The fireproof structure of a wall according to any one of the above.

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