JP2015031028A - Eaves ceiling member and eaves ceiling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an eaves ceiling member and an eaves ceiling structure, capable of making a thickness different in construction, and capable of reducing required labor, for realizing required fire resistant performance.SOLUTION: The eaves ceiling member 10 is provided on the reverse side of eaves of a building 100, and hides an eaves back space formed above. The eaves ceiling member 10 is a laminate structure of providing a plate-like metal plate part 15 between two face bars 11a and 11b, and comprises fixing metal fittings 14a and 14b for fixing the two face bars where the metal plate part 15 exists above and below.

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

  However, the thickness of the above-mentioned eaves-backed ceiling board is generally distributed in several thicknesses by the manufacturer, such as 8 mm, 12 mm, and 16 mm. Other than the thickness distributed on the user side It is extremely difficult to prepare an eaves ceiling board with a thickness of. Therefore, in order to improve the desired fire resistance performance by increasing the thickness of the eaves back ceiling board, it is necessary to prepare a plurality of thickness face materials in advance at the time of construction, it is difficult in practice. It did not lead to a realistic solution at the time of construction.

  Moreover, the face material of patent document 1 aims at improving fire resistance performance by sticking a metal plate, and the fire resistance performance of the face material itself is improved. However, the point that it is necessary to improve the fire resistance performance by changing the thickness of the face material is not solved at all, and has not yet reached a realistic solution.

  Therefore, the technical problem to be solved by the present invention is that an eaves ceiling member and eaves that can be made different in thickness during construction to reduce required labor in order to achieve the required fire resistance performance. It is to provide a back ceiling structure.

  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,
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 is
It is a laminated structure in which a plate-shaped metal plate is provided between at least two face materials, and the metal plate is provided with a fixing bracket for fixing the at least two face materials existing above and below. A feature eaves ceiling member is provided.

  According to the second aspect of the present invention, the fixing bracket is erected so as to extend from the edge of the metal plate to both sides of the metal plate, and is configured in a bowl shape so that the edge of the face material extends in the thickness direction. The eaves ceiling member according to the first aspect is provided, wherein the at least two face members are fixed by being locked to each other.

  According to the third aspect of the present invention, the fixing bracket is intermittently provided integrally with the metal plate at the edge of the metal plate by bending a plate material constituting the metal plate. The eaves ceiling member of a 2nd aspect is provided.

  According to the fourth aspect of the present invention, it is further provided at an edge different from the fixing position of the face material by the fixing bracket, and sandwiches all the layers of the at least two face materials and the metal plate in the thickness direction. The eaves ceiling member according to any one of the first to third aspects is provided, characterized in that the eaves ceiling member is provided with a second fixing fitting to be fixed.

  According to a fifth aspect of the present invention, the second fixing bracket includes a venting convex piece having a vent hole provided so as to protrude in the main surface direction of the face material. An eaves ceiling member of the aspect is provided.

According to the sixth 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 is
It is a laminated structure in which a plate-shaped metal plate is provided between at least two face materials, and the metal plate is provided with a fixing bracket for fixing the at least two face materials existing above and below. Providing a characteristic eaves-behind ceiling structure.

According to a seventh aspect of the present invention, the fixing bracket is provided at an edge of the metal plate so as to fix the at least two face materials by locking the edge of the face material in the thickness direction. Configured,
The eaves ceiling member is further provided at an edge opposite to a fixing position of the face material by the fixing metal fitting, and holds and fixes all the layers of the at least two face materials and the metal plate in the thickness direction. The eaves back ceiling structure of the 6th aspect characterized by providing 2 fixing metal fittings.

  According to an eighth aspect of the present invention, in the seventh aspect, the second fixing bracket includes a venting convex piece having a vent hole provided so as to protrude in the main surface direction of the face material. The eaves-behind ceiling structure of the aspect is provided.

  According to a ninth aspect of the present invention, the eaves ceiling member is provided such that the fixing bracket is disposed on the wall side and the second fixing bracket is disposed on the eave tip side. An eaves-behind ceiling structure according to eight aspects is provided.

  According to the eaves ceiling member and the eaves back ceiling structure of the present invention, at least two face materials are fixed by a metal plate provided between at least two face materials to constitute one eave ceiling member. Therefore, fire resistance can be improved by increasing the thickness of the member. In addition, the metal plate is a material excellent in fire resistance, and can maintain or improve fire resistance even when thin face materials are stacked, so it can be arbitrarily combined with the fire resistance required for each building. Performance can be increased.

  In the above aspect of the present invention, the face material can be easily fixed without locking holes or the like provided in the face material by locking the edge of the face material in the thickness direction by the fixing metal fitting.

  In the above aspect of the present invention, the manufacturing can be facilitated by configuring the fixture and the metal plate with a single plate.

  In the above aspect of the present invention, by providing the second fixing bracket, the fixing of the face material can be made stronger and the strength of the eaves ceiling member can be increased. Moreover, the eaves-behind ceiling structure is easily realizable by providing the 2nd fixing bracket with the ventilation convex piece.

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 face materials are continuously mounted. It is a perspective view which shows the structure of the 2nd fixing member used for the eaves ceiling member of FIG.

  Hereinafter, an eaves ceiling member according to an embodiment of the present invention and an eaves back ceiling structure using the eaves ceiling 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 according to the present embodiment is provided with an eaves ceiling member on the back side of the eaves of a building, and 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.

  In the eaves back ceiling structure according to the present embodiment, as described above, it is an example of the eaves back ceiling structure on the side of the breezes. In the eaves back ceiling structure according to the present embodiment, the field board 4 is laid on the rafter 3, Place roofing materials 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 up and down direction on the front end side, and on the upper end of the house wall 9 on the rear end side. Lock the stack. 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, according to the eaves ceiling member and the eaves back ceiling structure of the present invention, the two face members are fixed to each other by the metal plate portion provided between the two face members. Since the member can be configured, the fire resistance can be improved by increasing the thickness of the member. In addition, the metal plate part is a material with excellent fire resistance, and it is possible to further improve the fire resistance by stacking thin face materials, so it can be arbitrarily combined with the fire resistance required for each building. Can be increased.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, in the above-described embodiment, the fixing member is provided only at one end edge of the metal plate portion, and the two fixing members are provided to fix the two face materials. The face material may be fixed at one end edge.

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 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 (9)

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 is
It is a laminated structure in which a plate-shaped metal plate is provided between at least two face materials, and the metal plate is provided with a fixing bracket for fixing the at least two face materials existing above and below. A characteristic eaves ceiling member.   The fixing bracket is erected so as to extend from the edge of the metal plate to both sides of the metal plate, is configured in a bowl shape, and locks the edge of the face material in the thickness direction so that at least two pieces are provided. The eaves ceiling member according to claim 1, wherein the face material is fixed.   The eaves according to claim 2, wherein the fixing metal fitting is intermittently provided integrally with the metal plate at an edge of the metal plate by bending a plate material constituting the metal plate. Ceiling member.   Furthermore, the second fixing is provided at an edge different from the fixing position of the face material by the fixing bracket, and clamps and fixes all the layers of the at least two face materials and the metal plate in the thickness direction. The eaves ceiling member according to any one of claims 1 to 3, further comprising a metal fitting.   5. The eaves ceiling member according to claim 4, wherein the second fixing bracket includes a ventilation convex piece having a ventilation hole provided so as to protrude in a main surface direction of the face material. 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 is
It is a laminated structure in which a plate-shaped metal plate is provided between at least two face materials, and the metal plate is provided with a fixing bracket for fixing the at least two face materials existing above and below. Characterized by the eaves ceiling structure. The fixing bracket is configured to fix the at least two face materials by being provided at an edge of a metal plate and locking an edge of the face material in a thickness direction.
The eaves ceiling member is further provided at an edge opposite to a fixing position of the face material by the fixing metal fitting, and holds and fixes all the layers of the at least two face materials and the metal plate in the thickness direction. The eaves back ceiling structure according to claim 6, comprising two fixing brackets.   The eaves back ceiling structure according to claim 7, wherein the second fixing bracket includes a ventilation convex piece having a ventilation hole provided so as to protrude in a main surface direction of the face material. The eaves-ceiling structure according to claim 8, wherein the eaves ceiling member is provided such that the fixing bracket is disposed on a wall side and the second fixing bracket is disposed on an eave tip side.

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