JP2015031029A - Eave ceiling material and eaves back ceiling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eaves ceiling member and an eaves ceiling structure capable of eliminating a low part of fire resistant performance, by eliminating a joint of a face bar.SOLUTION: Thee eaves ceiling member 10 is provided on the reverse side of eaves of a building 100, and forms an eaves back space above. The eaves ceiling member 10 comprises at least two face bars 11a and 11b arranged so as to be laminated in the thickness direction and a fixing member for fixing at least the two face bars, and the fixing member comprises a metal plate part 15 laminated-arranged so as to be sandwiched by at least the two face bars, fixing metal fittings 14a and 14b provided in the metal plate part and fixing at least the two face bars by locking the edge of the face bars in the thickness direction and positioning parts 16a and 16b for positioning so as to make an installation position different in the direction along a main surface of the face bars to the metal plate part 15.

Description

  The present invention relates to an eaves ceiling member and an eaves back ceiling structure used for an eaves portion of a building such as a house.

  2. Description of the Related Art Conventionally, in buildings such as houses, fireproof performance is also required for eaves facing a neighboring house for the purpose of suppressing / preventing the spread of fire and fire due to the fire of the neighboring house. For this reason, an eaves-in-ceiling structure using a molded plate (eave-in-ceiling ceiling plate) such as a calcium silicate plate having fire resistance on the eaves is known.

  In addition, fire resistance beyond the fire resistance specified by the Building Standards Law has been increasing in recent years, and the structure of the eaves roof and ceiling has also been given a fire resistance that exceeds the fire resistance of the specified time specified by the Building Standards Law. It is hoped to do. Further, the required fire resistance varies depending on the building location. For example, in areas where houses are densely populated, higher fire resistance is required than in areas with poor housing. On the other hand, in order to improve fire resistance, a face material is known in which a thin metal plate having fire resistance is attached to the eaves back ceiling board (see Patent Document 1). It is conceivable to use an eaves-backed ceiling board with increased thickness.

JP 2001-227084 A

  The face material of Patent Document 1 is intended to improve the fire resistance performance by attaching a metal plate, but the fire resistance performance of the face material itself is improved.

  However, the eaves-rear ceiling structure is required to arrange a plurality of eaves-rear ceiling boards side by side along the wall surface, and a gap is generated at the joint between the eaves-rear ceiling boards. Since there is no face material in the gap portion, the fire resistance is inferior, and as a result, the required performance may not be realized.

  Therefore, the technical problem to be solved by the present invention is to provide an eaves ceiling member and an eaves back ceiling structure that can eliminate the joint of the face material and eliminate the portion having low fire resistance.

  In order to solve the above technical problems, the present invention provides an eaves ceiling member and an eaves back ceiling structure having the following configurations.

According to the first aspect of the present invention, the eaves ceiling member is provided on the back side of the eaves of the building, and the eaves space is formed above,
The eaves ceiling member includes at least two face materials arranged to be laminated in the thickness direction, and a fixing member that fixes the at least two face materials,
The fixing member is
A metal plate portion arranged so as to be sandwiched between the at least two face materials;
A fixing fitting provided on the metal plate portion and fixing the at least two face materials by locking an edge of the face material in the thickness direction;
An eaves ceiling member comprising: a positioning portion that positions the mounting position in a direction along the main surface of the face material with respect to the metal plate portion to be different.

According to the second aspect of the present invention, the fixing bracket is a bowl-shaped member erected so as to extend from the edge of the metal plate portion to both sides of the metal plate portion,
The face material positioning portions are provided on both sides of the metal plate portion, respectively, one at an edge adjacent to the edge where the fixing bracket is provided, and the other at an intermediate position of the metal plate portion. The eaves ceiling member according to the first aspect is provided.

According to the third aspect of the present invention, an eaves ceiling member is provided on the back side of the eaves of a building, and an eaves back space is formed above the eaves ceiling member,
The eaves ceiling member includes at least two face materials arranged to be laminated in the thickness direction, and a fixing member that fixes the at least two face materials,
The fixing member is
A metal plate portion arranged so as to be sandwiched between the at least two face materials;
A fixing fitting provided on the metal plate portion and fixing the at least two face materials by locking an edge of the face material in the thickness direction;
An eaves-backed ceiling structure, comprising: a positioning unit that positions the mounting positions in the direction along the main surface of the face material with respect to the metal plate portion to be different.

  According to the present invention, by fixing the two face materials in a state of being shifted from each other, a so-called phase stacking configuration can be obtained, and the joint between the eaves ceiling members can be eliminated. Therefore, the part in which the face material is not provided can be eliminated, and it can be prevented that the fire resistance performance is partially inferior. Moreover, since the metal plate part is provided in the location where the face material is displaced, higher fire resistance can be achieved compared to the face material.

It is a figure which shows the example of the house where the eaves back ceiling structure concerning embodiment of this invention was used. It is sectional drawing which shows the example of the eaves back ceiling structure concerning 1st Embodiment of this invention. It is a perspective view which shows the structure of the eaves ceiling member used for the eaves back ceiling structure of FIG. FIG. 4 is an exploded perspective view of the eaves ceiling member of FIG. 3. It is a perspective view which shows the structure of the 1st fixing member used for the eaves ceiling member of FIG. FIG. 4 is a partially omitted sectional view taken along line AA in FIG. 3. FIG. 6 is a partially omitted cross-sectional view taken along line BB in FIG. 5 in a state where a face material is mounted. It is a perspective view which shows the structure of the 2nd fixing member used for the eaves ceiling member of FIG. It is a perspective view which shows the structure of the 1st fixing member concerning a modification.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a ventilation decorative member according to an embodiment of the present invention and an eaves-back ceiling structure using the ventilation decorative member will be described with reference to the drawings.

FIG. 1 is a diagram illustrating an example of a house in which an eaves-backed ceiling structure according to an embodiment of the present invention is used.
The eaves back ceiling structure 1 according to the present embodiment is provided with an eaves ceiling member on the back side of the eaves of a building, an eaves back space is formed above the eaves ceiling member, and is excellent in ceiling back ventilation. In addition, the eaves back ceiling structure of this invention can be used for any of the blast side 102 or the nose cover side 103 of the roof 101. FIG. Hereinafter, the eaves ceiling structure according to each embodiment of the present invention will be described in detail.

  FIG. 2 is a cross-sectional view showing an example of the eaves-back ceiling structure according to the first embodiment of the present invention. The present embodiment will be described by taking an eaves-behind ceiling structure on the blast side as an example, and corresponds to a sectional view taken along line II-II in FIG.

  The eaves-back ceiling structure 1 according to the present embodiment is an example of the eaves-back ceiling structure on the windbreak side as described above. In the eaves-back ceiling structure 1 according to the present embodiment, the field board 4 is laid on the rafters 3. Put roof coverings such as tiles (not shown). A draining plate 5 is provided at the tip of the field plate 4.

  Further, a field edge 6 is provided on the leading end side of the rafter 3. The field edge 6 is provided in a direction intersecting with the extending direction of the rafter 3, and the base material 7 and the ventilation trunk edge 8 are fixed to the field edge 6.

  The ventilation trunk edge 8 is a member for fixing the eaves ceiling member 10, and connects the vertical trunk edge 8 a arranged at a predetermined interval in parallel with the rafter 3 and the rear end portion of each vertical trunk edge. And a horizontal trunk edge 8b to be reinforced.

  The eaves ceiling member 10 is fixed to the ventilation trunk edge 8 and the house wall 9. Further, a heat insulating material 20 may be disposed in the gap 8 c between the rafter 3 and the eaves ceiling member 10 defined by the ventilator edge 8.

  The eaves ceiling mounting bracket 21 that locks the eaves ceiling member 10 to the house wall 9 holds the wall side edge of the eaves ceiling member 10 from the vertical direction at the front end side, and is loaded on the upper end of the house wall at the rear end side. Lock. Further, fixing means 23 such as a nail or a drill screw is used for fixing the eaves ceiling member 10 to the ventilation trunk edge 8. In addition, the fixing method of the eaves ceiling member 10 is not restricted above.

  The makeup gust 2 is fixed to the base material 7 via the blast attachment fitting 24. In addition, the holding member 25 is fixed to the base material 7 by means such as a nail 26a so that a load is not concentrated on the decorative windbreak 2 by a roof decorative member (not shown) such as a tile provided on the base. Further, the draining plate 5 is fixed to the holding member 25 by a nail 26b.

  The makeup gable 2 is configured in a plate shape. The eaves ceiling member 10 is provided with a ventilation structure, which will be described later, to ensure ventilation to the back of the eaves.

  The decorative blast 2 is made of a cement-based extruded body, and preferably has a high toughness that causes multiple cracks to break even when subjected to a bending load, even with respect to the action of tensile stress. More specifically, an extruded product of a fiber-reinforced hydraulic composition, which has the property of causing multiple cracks to break upon bending loading can be suitably used.

  In the present embodiment, the makeup blast 2 is, for example, a member on a long flat plate having a longitudinal dimension of 3000 mm, a height dimension of approximately 180 mm, and a thickness dimension of approximately 25 mm. In addition, the magnitude | size of the makeup blast 2 is not necessarily limited to the said size, It can change suitably according to the magnitude | size of an eaves-back ceiling structure.

    FIG. 3 is a perspective view illustrating a configuration of an eaves ceiling member used in the eaves back ceiling structure according to the present embodiment. As shown in FIGS. 2 and 3, the eaves ceiling member 10 has a three-layer structure in which a metal plate portion 15 that is a part of the first fixing member 12 is sandwiched between two face members 11a and 11b. ing. In addition, a second fixing member 13 is provided on the eaves end side of the eaves ceiling member 10 to clamp and fix these three layers together.

  The two face materials 11a and 11b are formed of a flat fiber-mixed calcium silicate plate having a predetermined fire resistance, and the thickness of the calcium silicate plate is preferably 6 mm to 25 mm. . In the present embodiment, those having a thickness of 10 to 20 mm are used from the viewpoint of fire resistance. Here, the predetermined fire resistance of the eaves ceiling member 10 is, for example, when a predetermined fire resistance test is performed on an eave on which the eaves ceiling member 10 is laid, between the eaves back space and the outer wall. It shows the performance that makes it possible to maintain the temperature of the back side of the board (referred to as a standard board) to be maintained at a constant temperature or lower for a predetermined time. Including performance specified in all evaluation tests specified in the future.

  In the present embodiment, fiber-mixed calcium silicate plates are employed as the face materials 11a and 11b. However, as the face materials 11a and 11b, instead of the fiber-mixed calcium silicate plates, fiber-mixed cement calcium silicate plates are used. Ceramic siding boards such as fiber reinforced cement board, lime / calcium silicate board, hard wood piece cement board, etc. are used, and the thickness of the face materials 11a and 11b is appropriately selected according to the required fire resistance performance and material. .

  The first fixing member 12 can be composed of a stainless steel plate, steel plate, or aluminum plate having a thickness of about 0.2 to 3 mm, preferably about 0.5 to 2.5 mm. By providing the metal plate portion 15, the metal plate portion 15 can supplement the fire resistance performance of the face materials 11 a and 11 b and extend the fire resistance time of the eaves ceiling member 10 as a whole.

  The metal plate portion 15 positioned between the two face members 11 a and 11 b constitutes a part of the first fixing member 12. The size of the metal plate portion 15 is substantially the same as the size of the face materials 11a and 11b to be fixed.

  Further, the first fixing member 12 includes fixing brackets 14a and 14b that fix the two face members 11a and 11b to each other. The fixing brackets 14a and 14b are erected so as to extend from one end edge of the metal plate portion 15 to both sides, and are configured in a bowl shape to fix the two face members 11a and 11b in the thickness direction. To do.

  In the present embodiment, the first fixing member 12 is formed by cutting a single plate material and forming the fixing bracket 14b by bending the edge of the cut downward in the figure, for example, by press molding or the like. Is formed as the fixture 14a.

  As shown in FIGS. 3 and 6, the eaves ceiling member 10 is arranged so that the two face members 11 a and 11 b are laminated on the metal plate portion 15, and is thickened by the fixing brackets 14 a and 14 b of the first fixing member 12. After being locked in the direction, the second fixing member 13 fixes the three layers together by sandwiching them in the thickness direction. By adopting this configuration, each member can be firmly fixed without applying adhesive or screwing between the three layers.

  Further, face material positioning portions 16 a and 16 b for positioning the face materials 11 a and 11 b are provided on both surfaces of the metal plate portion 15. In the present embodiment, one face material positioning portion 16 a is provided at an intermediate position (a position that is not an edge) of the metal plate portion 15, and the other face material positioning portion 16 b is the fixing brackets 14 a and 14 b of the metal plate portion 15. Is provided at an end edge 15b adjacent to the end edge 15a. Thus, by changing the position of the face material positioning portion, the position of the joint of the two face materials can be made different as shown in FIG. The fire resistance performance of the joint portion can be improved.

  As shown in FIG. 8, the second fixing member 13 includes a fixing portion 17 that fixes three layers including the two face members 11 a and 11 b and the metal plate portion 15 constituting the eaves ceiling member 10 together, and a fixing portion. 17 A flange 18 is provided as an example of a ventilation convex piece provided so as to protrude from the lower end portion in the main surface direction of the face material. The flange portion 18 is provided with a plurality of vent holes 19 penetrating in the thickness direction, so that the eaves 19 and the outside can be ventilated through the vent holes 19.

  The flange portion 18 is configured to be folded upward so that the ventilation filter 29 can be held, and the ventilation filter 29 is sandwiched between the upper surface 18a and the lower surface 18b of the flange portion. The ventilation filter 29 is made of an elongated rod-like mesh material, and is a member having a waterproof and insect-proof function while allowing ventilation. As an example, a honeycomb material having a thickness of several centimeters can be suitably used.

  A projecting portion 30 projecting to the lower side of the eaves ceiling member 10 is provided at the lower end portion of the makeup blast 2. By providing the overhanging portion 30, it is possible to reduce the gap between the eaves ceiling member 10 and the makeup blast 2 and make it difficult to visually recognize the gap from the eaves top side. A wet sealant or the like is applied to the gap 31 between the eaves ceiling member 10 and the makeup blast 2 to connect the eaves ceiling member 10 and the makeup gust 2. Since the gap 31 is sufficiently reduced by the overhanging portion 30, it is possible to easily apply a wet sealant or the like.

  In the eaves ceiling structure according to the present embodiment, as shown by an arrow 90 in FIG. 2, ventilation between the attic and the outside air is performed using the ventilation holes 19 provided in the second fixing member 13 as ventilation paths. Can do.

  Next, the construction method of the eaves-behind ceiling structure using the above-mentioned makeup gable will be described. The eaves back ceiling structure according to the present embodiment can exhibit desired fire resistance performance that is not sufficient by the face material alone by laminating two face materials without preparing face materials of various thicknesses in advance. It can be done.

  The rafter 3 and the field edge 6 which are the frameworks of the eaves structure are assembled. The base material 7 is fixed to these frame structures, and the ventilation trunk edge 8 is attached. Thereafter, the base plate 4, draining plate 5, holding member 25, etc. are attached.

  The windbreak fitting 24 is positioned and fixed to the base material 7. As described above, the breaking wind mounting bracket 24 is provided with the locking piece 24a, and the attachment position in the vertical direction of the makeup breaking wind 2 is determined. The locking piece 24 a is inserted into the fixing groove of the makeup gust 2, and the makeup gust 2 is arranged along the surface of the base material 7. Next, the makeup wind 2 is fixed using the screws 28.

  Next, the dimension of the eaves ceiling member 10 is determined, and as described above, the first fixing member 12 and the two face members 11a and 11b are appropriately cut into a size suitable for the building, and the first fixing member 12 is cut. The two face members 11a and 11b are attached so as to contact the fixing brackets 14a and 14b and the face member positioning portions 16a and 16b, and the eaves ceiling member 10 is assembled by fixing the three layers by the second fixing member. The thickness of the face materials 11a and 11b used at this time may be arbitrary, as long as the eaves ceiling member 10 as a whole can exhibit the required fire resistance.

  Thereafter, the eaves ceiling member 10 is attached to the ventilator rim 8 using the nail 23 and the eaves top mounting bracket 21. At this time, the eaves ceiling 18 determines the dimensions of the eaves ceiling so that the eaves part 18 is placed on the upper side of the overhanging part 30 of the decorative windbreak 2. In addition, since the overhang | projection part 30 is overhanging under the eaves ceiling, the clearance gap between the eaves ceiling member 10 and the makeup windbreak 2 is hard to be visually recognized from the outside, and the dimension adjustment of the eaves ceiling member 10 can be made easy.

  After the eaves ceiling member 10 is attached, the gap 31 between the eaves ceiling member 10 and the makeup blast 2 is sealed with a sealing material.

  In the eaves ceiling structure configured as described above, as shown in FIG. 2, a ventilation path 90 for ventilating the attic and the outside air is formed. In addition, since the eaves ceiling member 10 is assembled using two face materials, fire resistance performance can be improved, and face materials with different thickness dimensions are prepared in order to realize the fire resistance performance required for each building. There is no need to do.

  As described above, by fixing the two face materials so as to be shifted from each other, a so-called phase stacking configuration can be obtained, and the joint between the eaves ceiling members can be eliminated. Therefore, the part in which the face material is not provided can be eliminated, and it can be prevented that the fire resistance performance is partially inferior. Moreover, since the metal plate part is provided in the location where the face material is displaced, higher fire resistance can be achieved compared to the face material.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, the face material positioning portion does not need to be provided separately from the fixing metal fitting on the surface of the metal plate portion, and may be integrally formed as shown in FIG.

1 eaves ceiling structure 2 makeup wind 3 rafters 4 field board 5 draining board 6 field edge 7 base material 8 ventilator edge 9 house wall 10 eaves ceiling member 11a, 11b face material 12 first fixing member 13 second fixing member 14a, 14b Fixed metal fitting 15 Metal plate part 16a, 16b, 16c Face material positioning part 17 Fixed part
18 Hook 19 Air Vent 20 Heat Insulating Material 21 Eave Top Mounting Bracket 23, 26a, 26b, 27 Nail 24 Windbreak Mounting Bracket 28 Screw 29 Ventilation Filter 30 Overhang 31 Gaps

Claims (3)

An eaves ceiling member that is provided on the back side of the eaves of the building and has an eaves space formed above,
The eaves ceiling member includes at least two face materials arranged to be laminated in the thickness direction, and a fixing member that fixes the at least two face materials,
The fixing member is
A metal plate portion arranged so as to be sandwiched between the at least two face materials;
A fixing fitting provided on the metal plate portion and fixing the at least two face materials by locking an edge of the face material in the thickness direction;
An eaves ceiling member, comprising: a positioning portion that positions the mounting position in the direction along the main surface of the face material with respect to the metal plate portion to be different. The fixing bracket is a bowl-shaped member erected so as to extend from the edge of the metal plate portion to both sides of the metal plate portion,
The face material positioning portions are provided on both sides of the metal plate portion, respectively, one at an edge adjacent to the edge where the fixing bracket is provided, and the other at an intermediate position of the metal plate portion. The eaves ceiling member according to claim 1, wherein the eaves ceiling member is provided. An eaves ceiling member is provided on the back side of the eaves of the building, and an eaves back space is formed above the eaves ceiling member,
The eaves ceiling member includes at least two face materials arranged to be laminated in the thickness direction, and a fixing member that fixes the at least two face materials,
The fixing member is
A metal plate portion arranged so as to be sandwiched between the at least two face materials;
A fixing fitting provided on the metal plate portion and fixing the at least two face materials by locking an edge of the face material in the thickness direction;
An eaves-backed ceiling structure, comprising: a positioning portion that positions the mounting positions in the direction along the main surface of the face material relative to the metal plate portion.

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