JP2024018214A - ceiling panel - Google Patents

Abstract

An object of the present invention is to provide a ceiling panel that can accommodate dimensional changes in a second direction while covering the four circumferential end surfaces of a core material, and can suppress sagging at both ends in the second direction. A ceiling panel 1 covers a core material 13 having a rectangular shape in plan view and a surface 13b of the core material, and extends from a portion covering the surface to both sides in a first direction of the four sides of the core material. The panel main body 10 has a sheet 17 that covers the end surface 14a of the end portion 14 of the core material, and the end surface protection piece portion 25 that covers the exposed end surface 15a of both sides in the second direction among the four sides of the core material. Elongated reinforcing metal fittings 23 are installed along both sides of the panel main body in the second direction, and fixing parts 22 are provided on both sides of the panel main body in the first direction and fixed to the ceiling base 2. ing. [Selection diagram] Figure 1

Description

The present disclosure relates to ceiling panels.

2. Description of the Related Art Conventionally, ceiling panels have been known that have a structure in which a top sheet is provided on the surface of various core materials.
For example, Patent Document 1 listed below discloses a ceiling panel in which the indoor side surface and four peripheral end surfaces of a foamed resin layer are continuously covered with a surface layer.

JP 2019-173537 Publication

However, in the ceiling panel described in Patent Document 1, although it is possible to cover the end faces of the four circumferences of the core material, there is a concern that manufacturing efficiency will decrease if ceiling panels of different dimensions are required. Furthermore, since the both ends in the first direction that are fixed to the ceiling base arranged at intervals in the first direction are fixed to the ceiling base, sagging etc. are less likely to occur, but at both ends in the second direction, There is also a concern that sagging or the like may occur more easily.

The present disclosure has been made in view of the above circumstances, and provides a ceiling panel that can accommodate dimensional changes in the second direction while covering the four peripheral end surfaces of the core material, and can suppress sagging at both ends in the second direction. is intended to provide.

In order to achieve the above object, the ceiling panel according to the present disclosure covers a core material having a rectangular shape in a plan view, and covers the surface of the core material, and extends from four sides of the core material in a continuous manner from a portion covering the surface. a panel main body having a sheet that covers end faces of both sides in the first direction; and an end face protection piece portion that covers exposed end faces of both sides in the second direction of the four sides of the core material, and the panel The panel includes elongated reinforcing metal fittings attached along both sides of the panel body in the second direction, and fixing parts provided on both sides of the panel body in the first direction and fixed to the ceiling base. Features.

With the above-described configuration, the ceiling panel according to the present disclosure can accommodate dimensional changes in the second direction while covering the four peripheral end surfaces of the core material, and suppresses sagging at both ends in the second direction. be able to.

FIG. 1 is a partially cutaway schematic plan view schematically showing an example of a ceiling panel according to an embodiment of the present disclosure. (a) is a partially broken schematic perspective view of the same ceiling panel, and (b) is a partially broken schematic exploded perspective view of the same ceiling panel. (a) is a partially broken schematic vertical cross-sectional view corresponding to the X1-X1 line arrow in FIG. 1, and (b) is a partially broken schematic longitudinal cross-sectional view corresponding to the X2-X2 line arrow in FIG. It is a diagram. (a) is a partially cutaway schematic perspective view of the ceiling panel, and (b) and (c) are partially cutaway schematic vertical cross-sectional views corresponding to the X3-X3 line arrow view in FIG. It is. 4(a) to 4(c) schematically show a modified example of the same ceiling panel and correspond to FIGS. 4(a) to 4(c), respectively.

Embodiments of the present disclosure will be described below based on the drawings.
In some figures, some detailed symbols attached to other figures are omitted.
In the following embodiment, directions such as the vertical direction will be described with reference to the state in which the ceiling panel according to the present embodiment is installed.
1 to 5 are diagrams schematically showing an example and a modified example of the ceiling panel according to the present embodiment.

As shown in FIG. 1, the ceiling panel 1 according to the present embodiment includes a panel main body 10 having a rectangular shape in plan view, and elongated reinforcing metal fittings 20, 20, 23 attached along the four sides of the panel main body 10, respectively. , 23. With such a configuration, the four circumferential ends (first end 11 and second end 12) constituting the four sides of the panel body 10 can be reinforced with the reinforcing metal fittings 20, 20, 23, 23. , it is possible to suppress sagging and the like at the four peripheral edges in the installed state, making it suitable for the ceiling panel 1.
The reinforcing metal fittings 20 and 23 include first reinforcing metal fittings 20 and 20 that are respectively attached along the first end portions 11 and 11 that constitute both sides in the first direction of the four sides of the panel body 10. The reinforcing metal fittings 20 and 23 are second reinforcing metal fittings 23 and 23 that are respectively attached along the second end portions 12 and 12 that constitute both sides in the second direction perpendicular to the first direction among the four sides of the panel body 10. Contains.

As shown in FIGS. 1 to 3, the ceiling panel 1 includes a fixing member 30 that fixes the overlapped ends 21a and 28a of the reinforcing metal fittings 20 and 23 adjacent to each other at the four corners of the panel body 10 to the panel body 10. ing. The fixing member 30 includes a cover piece 31 arranged to cover the overlapping ends 21a and 28a of the reinforcing metal fittings 20 and 23. The fixing member 30 is a fastening piece that is inserted into the layer of the panel body 10 so as to overlap with the cover piece 31 in the panel thickness direction, and to which the fastener 3 penetrating the cover piece 31 is fixed. 35. With such a configuration, a part of the panel body 10 and the ends 21a, 28a of the reinforcing metal fittings 20, 23 are inserted between the fastening piece 35 inserted into the layer of the panel body 10 and the cover piece 31. The fixing piece part 35 and the cover piece part 31 are fastened together by the fixing tool 3 in a state where they are sandwiched. As a result, the reinforcing metal fittings 20 and 23 are attached to the panel body 10 through the fixing member 30, compared to a configuration in which the reinforcing metal fittings 20 and 23 are fixed to the panel body 10 only with adhesive or a configuration in which they are directly fixed to the panel body 10 using the fixing tool 3. It can be firmly fixed against the Further, the reinforcing metal fittings 20 and 23 on the four circumferences are connected by the fixing members 30 at the four corners that fix them to the panel main body 10. Therefore, compared to a configuration in which each of the reinforcing metal fittings 20, 23 is individually fixed to the panel body 10, it becomes difficult for the four circumferential reinforcing metal fittings 20, 23 to be displaced from each other, and the four circumferential reinforcing metal fittings 20, 23 are fixed to the panel main body 10. can be stably fixed. Moreover, the cover piece 31 of the fixing member 30 and the head of the fixing tool 3 can be placed on the ceiling base 2 side of the ceiling panel 1, and the appearance on the indoor side can be improved.

Among the reinforcing fittings 20, 23 on the four sides, the first reinforcing fittings 20, 20 on both sides in the first direction or the second reinforcing fittings 23, 23 on both sides in the second direction include fixing parts that constitute a fixing part fixed to the ceiling base 2. Pieces 22, 22 are provided. With such a configuration, the ceiling panel 1 is attached to the ceiling base via the fixing piece portion 22 of the reinforcing metal fittings (in this example, the first reinforcing metal fittings 20) on either both sides in the first direction or both sides in the second direction. It can be fixed at 2. Moreover, one reinforcing metal fitting (first reinforcing metal fitting 20) fixed to the ceiling base 2 is connected to the other reinforcing metal fitting (second reinforcing metal fitting 23) via a fixing member 30, so that the panel body 10 is Since it is fixed, it can also be expected to prevent the other reinforcing metal fitting (second reinforcing metal fitting 23) from falling off in the event of a fire or the like.

The panel body 10 includes a core material 13 having a rectangular shape in plan view. The panel body 10 covers the surface (second surface in the thickness direction of the panel) 13b of the core material 13, and extends from the region covering the second surface 13b to both sides in the first direction of the four sides of the core material 13. A sheet (second sheet) 17 is provided that covers the end surface (first end surface) 14a of the end portion (first end portion) 14. With such a configuration, the first end surface 14a of the first end portion 14 of the core material 13 can be covered with the second sheet 17.
The ceiling panel 1 has end face protection pieces 25 that cover exposed end faces (second end faces) 15a on both sides in the second direction of the four sides of the core material 13, and on both sides in the second direction of the panel body 10. Elongated reinforcing metal fittings (second reinforcing metal fittings) 23 are provided, which are attached along the respective sides. The ceiling panel 1 includes fixing portions (fixing piece portions) 22 provided on both sides of the panel body 10 in the first direction and fixed to the ceiling base 2. With such a configuration, the fixing piece portions 22 on both sides of the panel body 10 in the first direction can be fixed to the ceiling base 2. Further, the second end surface 15a of the second end portion 15 of the core material 13 can be covered by the end surface protection piece portion 25 of the second reinforcing metal fitting 23. Thereby, it is not necessary to continuously cover the second end surface 15a with the second sheet 17 that covers the second surface 13b side, and it becomes possible to easily accommodate dimensional changes in the second direction. Further, the second reinforcing metal fittings 23 are respectively attached along both sides in the second direction of the panel body 10, which are different sides from both sides in the first direction fixed to the ceiling base 2. Therefore, the second reinforcing metal fittings 23 can suppress sagging on both sides in the second direction that are not fixed to the ceiling base 2.

As shown in FIG. 1, the ceiling base 2 to which the ceiling panel 1 is fixed may be a long field edge provided at intervals in the first direction and extending in the second direction. The edge that constitutes such a ceiling base 2 may be made of light iron and may constitute a so-called light ceiling base (steel ceiling base). The ceiling base 2 may be supported by elongated field supports that are provided at intervals in the second direction and extend in the first direction. The steel ceiling base may include a hanger for suspending and supporting such a field edge support, a hanging bolt that is inserted into an insertion hole of the hanger, and fixed with a nut.
This ceiling panel 1 may be constructed as a ceiling of a relatively small building such as a residence or an office, or may be constructed as a ceiling of various relatively large buildings such as a gymnasium, a hall, a shopping mall, a factory, a school, etc. may be done.

The ceiling panel 1 may have a substantially square shape or a substantially rectangular shape when viewed from above. The size of the ceiling panel 1 in plan view may be any size appropriate from the viewpoint of ease of handling, ease of construction, and the like. The size of the ceiling panel 1 in a plan view may be approximately the same as the size of a general ceiling panel when it is arranged so as to constitute most of the ceiling surface. The length may be 0.3 m or more, or 2.5 m or less. In the ceiling panel 1 having a substantially rectangular shape, the length of the short side may be 0.3 m or more and the length of the long side may be 2.5 m or less. In the substantially square ceiling panel 1, the length of one side may be 0.6 m or more and 1.5 m or less, or about 0.8 m to 1.2 m. The thickness of the panel body 10 of this ceiling panel 1 may be, for example, about 2.5 mm to 15.0 mm, preferably about 3.0 mm to 12.0 mm, and more preferably about 3.0 mm to 12.0 mm, although it depends on the layer structure etc. may be approximately 3.0 mm to 6.0 mm. When this ceiling panel 1 is used as an inspection port panel that opens and closes an inspection port, the dimensions may be determined according to the size of the inspection port, and the dimensions may be smaller than the size of a general ceiling panel.

As shown in FIG. 3(b), the panel body 10 includes a first sheet 16 that covers a first surface 13a in the thickness direction of the panel, which is a surface of the core material 13 facing toward the ceiling base. The second sheet 17 covering the second surface 13b, which is the surface facing the indoor side of the core material 13, extends from the region covering the second surface 13b to the first end surface 14a of the first end 14 and the first end. The first sheet 16 on the first surface 13a side of 14 is covered. That is, the second sheet 17 includes an end sheet portion 18 that covers the first end surface 14a, and a base sheet portion 19 that covers the first sheet 16 on the first surface 13a side of the first end portion 14. With such a configuration, the appearance of the end faces of the first end portions 11, 11 on both sides in the first direction of the panel body 10 can be improved. Furthermore, compared to a configuration in which the second sheet 17 is not provided on the first surface 13a side or a configuration in which an edge sheet is attached to the first end surface 14a, the second sheet 17 (end surface sheet portion 18) that covers the first end surface 14a is peeling can be suppressed.

The core material 13 of this panel body 10 may be a gypsum board, a calcium silicate board, or the like, but it is made of foamed resin or fiber. With such a configuration, the panel main body 10 can be lighter in weight compared to a configuration in which the panel body 10 includes a wooden board, a gypsum board, or the like.
Examples of the foamed resin core material 13 include those formed from resin compositions such as polyurethane resin, polystyrene resin, polyethylene resin, polypropylene resin, phenol resin, and epoxy resin. Examples of the fiber-based core material 13 include those formed from mineral fibers such as glass wool and rock wool. In the illustrated example, the core material 13 is a foamed resin layer. This core material 13 occupies most of the panel body 10, and may have a thickness of about 80% to 99% of the thickness of the panel body 10, for example.
The first sheet 16 and the second sheet 17 may include a flame retardant layer. Such a flame retardant layer may have an appropriate structure so that the ceiling panel 1 satisfies technical standards regarding performance required for noncombustible materials and the like stipulated in the Building Standards Act. For example, the ceiling panel 1 may be configured to meet the criteria for "flame retardant material" in the technical standards, preferably, it may be configured to meet the criteria for "semi-noncombustible material", and even more so. Preferably, the material may be configured to meet the criteria of "noncombustible material." For example, the flame retardant layer may be a metal sheet such as a foil-shaped aluminum sheet made into a thin sheet.

The first sheet 16 and the second sheet 17 may be provided with a reinforcing layer containing reinforcing fibers such as glass fibers. The reinforcing layer may be a reinforced fiber sheet such as glass cloth, or a fiber reinforced resin layer such as a glass fiber reinforced resin layer in which a reinforcing fiber sheet is impregnated with resin. In this case, the first sheet 16 and the second sheet 17 may be laminated and integrated with the core material 13 via the fiber reinforced resin layer when forming the core material 13. The surface (interior side surface) of the second sheet 17 may be a decorative surface that has been subjected to an appropriate surface cosmetic treatment such as pasting a decorative sheet, printing, or painting.
The width dimension in the first direction of the base sheet portion 19 of the second sheet 17 may be an appropriate dimension from the viewpoint of reinforcing the first end portion 11, suppressing peeling, achieving weight reduction, etc. For example, the width of the base sheet portion 19 may be approximately 1 to 15 times the thickness of the panel body 10, preferably approximately 2 to 10 times. A recessed step portion for receiving the base-side sheet portion 19 may be provided on the ceiling base side of the first end portion 11.

As shown in FIG. 1, the first reinforcing metal fittings 20, 20 are elongated in the second direction and are provided so as to extend over substantially the entirety of the panel body 10 in the second direction. These first reinforcing metal fittings 20, 20 include mounting pieces 21, 21 that are attached along the side surfaces of the base of the first ends 11, 11, and fixing pieces 22, 22. The first reinforcing metal fittings 20, 20 on both sides in the first direction have the same configuration except for the fixing piece parts 22, 22, so the similar configuration will be explained by taking one as an example.
The mounting piece portion 21 has a plate shape whose thickness direction is the panel thickness direction. As shown in FIGS. 1 and 3, the mounting piece portion 21 is provided with a plurality of elongated holes having a long diameter in the second direction and spaced apart from each other in the second direction. Ends 21a, 21a located at the four corners of the panel body 10, which are both longitudinal ends of the attachment piece 21, are sandwiched between the cover piece 31 and the fastening piece 35 of the fixing member 30. In addition to the fixing member 30, the attachment piece portion 21 may be attached to the base side surface of the first end portion 11 of the panel body 10 using an appropriate adhesive, adhesive material, or the like.

The fixed piece portion 22 has a plate shape whose thickness direction is the panel thickness direction. The fixed piece part 22 is provided so as to be located on the outside of the attachment piece part 21 in the first direction. As shown in FIG. 3(b), the fixing piece 22 is the tip in the rising direction of a rising piece that rises from the outer end in the first direction of the mounting piece 21 toward the ceiling base 2 side in the panel thickness direction. It is provided so as to extend outward from the section in the first direction. This fixing piece portion 22 is provided so as to extend outward in the first direction from the end surface of the first end portion 11 of the panel body 10. As shown in FIG. 1, the fixed piece portion 22 is provided with portions recessed in the first direction and portions protruding in the first direction, which are alternately provided in the second direction. Some of the protruding parts are provided with insertion holes through which fixing tools fixed to the ceiling base 2 are inserted. Parts of the ceiling panels 1, 1 adjacent to each other in the first direction are overlapped with each other so that the protruding part of the fixing piece part 22 of one of them covers the recessed part of the other fixing piece part 22. It may be fixed to the ceiling base 2 in this state. In the illustrated example, a concave portion is provided at both ends in the second direction of the fixing piece portion 22 on one side in the first direction, and a protruding portion is provided on both ends in the second direction of the fixing piece portion 22 on the other side in the first direction. An example is shown below. The fixing piece portion 22 fixed to the ceiling base 2 is not limited to this configuration, and may have various other configurations.

The second reinforcing metal fittings 23, 23 are elongated in the first direction and are provided so as to extend over substantially the entire panel body 10 in the first direction. Since the second reinforcing metal fittings 23, 23 on both sides in the second direction have the same configuration, one will be explained below as an example.
As shown in FIGS. 1 and 4, the end face protection piece 25 of the second reinforcing metal fitting 23 has an engaging part 26 provided on the end face protection piece 25 of the ceiling panel 1 adjacent in the second direction. An engaging portion 26 that engages is provided. With this configuration, by engaging the engaging parts 26, 26 of the end face protection pieces 25, 25 of the ceiling panels 1, 1 adjacent to each other in the second direction, Level differences can be suppressed.
The engaging portions 26 engage with engaging protrusions 26a provided alternately at intervals in the longitudinal direction of the end face protection piece portion 25 and at two-fold symmetrical positions with the longitudinal center as an axis. The recess 26b may also be included. With such a configuration, by engaging the engaging projections 26a and the engaging recesses 26b of the end face protection pieces 25, 25 of the ceiling panels 1, 1 adjacent to each other in the second direction, both sides in the second direction can be engaged with each other. It is possible to suppress the step difference at the end. Further, the second reinforcing metal fitting 23 on one side in the second direction and the second reinforcing metal fitting 23 on the other side in the second direction can be made into a common component.

The dimension of the engagement recess 26b in the first direction is larger than the dimension of the engagement protrusion 26a in the first direction. With such a configuration, even if the positions of the ceiling panels 1, 1 adjacent to each other in the second direction are misaligned in the first direction, the engagement protrusion 26a can be engaged with the engagement recess 26b. I can do it.
When the engagement protrusion 26a and the engagement recess 26b are engaged with each other, the dimension (engagement dimension) of the engagement protrusion 26a in the second direction within the engagement recess 26b is 0.5 mm to 3.0 mm. It may be formed as follows. With such a configuration, the engagement protrusion 26a and the engagement recess 26b can be appropriately engaged, steps, etc. are less likely to occur, and it can be easily removed after construction. In other words, if the above-mentioned engagement dimension is made too small, sufficient engagement will not be obtained, and there will be a tendency for a step difference to occur between the ceiling panels 1, 1 that are adjacent to each other in the second direction. On the other hand, if the above-mentioned engagement dimension is made too large, it tends to become difficult to remove the ceiling panel 1 by moving it generally in the panel thickness direction to release the engagement and remove it. The above-mentioned engagement dimension is the distance from the opening periphery of the engagement recess 26b facing outward in the second direction to the tip of the engagement protrusion 26a inserted into the engagement recess 26b in the protruding direction. It may be dimensioned in two directions. The engagement dimension may preferably be 2.0 mm or less.

Specifically, the end face protection piece portion 25 has a plate shape with the thickness direction being the second direction, as shown in FIGS. 3(a) and 4. This end face protection piece portion 25 is provided so as to cover substantially the entire second end face 15a of the exposed second end portion 15 of the core material 13.
In this example, the end face protection piece 25 is provided with one engagement protrusion 26a and one engagement recess 26b. These engaging protrusions 26a and engaging recesses 26b are provided at positions equidistant from the longitudinal center of the end face protection piece 25. The dimension in the first direction from the longitudinal center of the end face protection piece 25 to the first direction center of the engagement protrusion 26a, and the dimension from the longitudinal center of the end face protection piece 25 to the first direction center of the engagement recess 26b. The dimension in the first direction may be the same dimension. These engagement protrusions 26a and engagement recesses 26b are formed on the other end face protection piece 25 which is rotated 180 degrees around an axis along the panel thickness direction with respect to the one end face protection piece 25 on which these are provided. It is provided at a position where it mutually engages with the engagement recess 26b and the engagement protrusion 26a.

Instead of the embodiment in which the end face protection piece 25 is provided with one engagement protrusion 26a and one engagement recess 26b, an embodiment in which two or more engagement protrusions 26a and two or more engagement recesses 26b are provided. You can also use it as In this case as well, the engaging protrusions 26a and the engaging recesses 26b are placed alternately at intervals in the longitudinal direction of the end face protection piece 25, and in two-fold symmetrical positions about the longitudinal center. may be provided. For example, an engagement recess 26b further provided on the longitudinal outer side of the engagement protrusion 26a on the longitudinal center side, and an engagement protrusion 26a further provided on the longitudinal outer side of the engagement recess 26b on the longitudinal center side. and may be provided so as to be equidistant from the longitudinal center of the end face protection piece portion 25.

The engaging protrusion 26a is provided so as to protrude outward in the second direction from the surface of the end face protection piece 25 facing outward in the second direction. The protrusion size of the engagement protrusion 26a may be an appropriate protrusion size so that the above-mentioned engagement size can be ensured. The engaging protrusion 26a is formed so as to become tapered toward the outside in the second direction when viewed in the longitudinal direction (first direction) of the end face protection piece 25 (as viewed in longitudinal section). The engagement protrusion 26a has a protruding end portion in the shape of a convexly curved surface. In the illustrated example, the engaging protrusion 26a has substantially the same dimension in the first direction and the dimension along the panel thickness direction, and has a substantially hemispherical shape. The engaging protrusion 26a may be fixed to the end face protection piece 25 by adhesion, welding, etc., but in the illustrated example, it is formed integrally with the end face protection piece 25 by pressing or the like.

The engagement recess 26b is provided so as to open outward in the second direction on the surface of the end face protection piece 25 facing outward in the second direction. In this example, the engagement recess 26b is a bottomed hole. With such a configuration, compared to a through hole, the second end surface 15a of the core material 13 is not exposed in the engagement recess 26b, and the appearance can be improved. The engagement recess 26b is formed to expand outward in the second direction when viewed in longitudinal section. The engagement recess 26b has a concave curved bottom. In the illustrated example, the shape of the engagement recess 26b when viewed in longitudinal section corresponds to the shape of the engagement protrusion 26a. The parts that define the engagement recess 26b may be fixed by adhesive, welding, etc. so as to close the through holes formed in the end face protection piece 25, but in the illustrated example, the parts that define the engagement recess 26b are pressed into the end face protection piece 25. It is integrally formed by In the illustrated example, a portion defining the bottom side of the engagement recess 26b bites into the second end 15 of the core material 13.

The depth dimension (dimension in the second direction) of the engagement recess 26b and the dimension along the panel thickness direction may be set to appropriate dimensions so that the engagement protrusion 26a can be received. The illustrated example shows an example in which the depth dimension of the engagement recess 26b is larger than the protrusion dimension of the engagement protrusion 26a. Further, an example is shown in which the dimension of the opening edge of the engagement recess 26b along the panel thickness direction is approximately the same as the dimension of the proximal end of the engagement protrusion 26a in the same direction.
The dimension in the first direction of the engagement recess 26b may be an appropriate dimension from the viewpoint of absorbing the positional shift in the first direction between the ceiling panels 1, 1 adjacent to each other in the second direction. It may be approximately 1.5 to 5 times the dimension of the portion 26a in the first direction.
When the engaging recesses 26b and the engaging protrusions 26a of the ceiling panels 1, 1 adjacent to each other in the second direction are engaged with each other, as shown in FIG. , 25 are in contact with or close to each other.

The second reinforcing metal fitting 23 has a substantially U-shape (U-shape) when viewed in the longitudinal direction so as to define a receiving groove 24 that receives the second end portion 12 of the panel body 10. The receiving groove 24 opens inward in the second direction toward the panel main body 10 and is provided so as to extend over the entire length of the second reinforcing metal fitting 23 . The bottom of the receiving groove 24 is defined by an end face protection piece 25. The second reinforcing metal fitting 23 includes a base side piece 28 that partitions one side of the receiving groove 24 in the groove width direction (ceiling base 2 side), and a chamber side piece 28 that partitions the other side of the receiving groove 24 in the groove width direction (indoor side). An inner piece portion 29 is provided.
The base side piece 28 is provided so as to extend inward in the second direction from the edge of the end face protection piece 25 on the ceiling base 2 side, and has a plate shape whose thickness direction is the panel thickness direction. ing. This base side piece 28 is provided with a plurality of elongated holes having a long diameter in the first direction and spaced apart in the first direction. The illustrated example shows an example in which a rising piece is provided that rises from the leading end in the extending direction (the inner end in the second direction) of the base-side piece 28 toward the ceiling base 2 side. With such a configuration, the rigidity of the second reinforcing metal fitting 23 can be improved.

Ends 28a, 28a (see FIGS. 2(b) and 3) located at the four corners of the panel body 10, which are both longitudinal ends of the base side piece 28, are connected to the cover piece 31 of the fixing member 30 and the fastening piece. 35. In addition to the fixing member 30, the base side piece 28 may be attached to the base side surface of the second end portion 12 of the panel body 10 using an appropriate adhesive, adhesive, or the like.
The indoor side piece 29 is provided so as to extend from the indoor side edge of the end face protection piece 25 toward the inside in the second direction, and has a plate shape whose thickness direction is the panel thickness direction. . The dimension in the second direction (extension dimension) of the indoor side piece 29 and the base side piece 28 is determined from the viewpoint of protecting the second end 12 of the panel main body 10 and from the viewpoint of reducing weight, so that it is difficult to stand out on the indoor side. The dimensions may be set as appropriate from the viewpoint of In this example, the extension size of the indoor side piece 29 is smaller than the extension size of the base side piece 28. With such a configuration, the indoor side piece portion 29 exposed on the indoor side can be made less noticeable. The extension dimension of this indoor side piece 29 may be about 1/5 to 4/5 of the extension dimension of the base side piece 28, and the illustrated example shows an example where it is about 1/3.

Four fixing members 30, 30, 30, 30 each fix the first reinforcing metal fittings 20, 20 on both sides in the first direction and the second reinforcing metal fittings 23, 23 on both sides in the second direction at the four corners of the panel body 10, respectively. It is provided. These four fixing members 30, 30, 30, 30 have the same configuration, so one example of a specific configuration will be described below.
As shown in FIG. 3, the fastening piece 35 of the fixing member 30 is inserted into the core material 13 at a portion of the first end 11 covered by the base sheet portion 19 of the second sheet 17. In other words, the fastening piece 35 is inserted into the layer of the panel body 10 so as to be located closer to the second surface 13b than the first sheet 16 in the area covered by the base sheet part 19 of the first end 11. It is. With such a configuration, the base side sheet portion 19 of the first sheet 16 and second sheet 17, which become a part of the panel body 10, is connected to the first reinforcing metal fitting between the fastening piece 35 and the cover piece 31. 20 and the overlapping end portions 21a and 28a of the second reinforcing metal fitting 23. Thereby, the first reinforcing metal fittings 20 and the second reinforcing metal fittings 23 can be more firmly fixed to the panel main body 10 via the fixing members 30. The sandwiched layer 10a as a part of the panel body 10 that is sandwiched between the fastening piece 35 and the cover piece 31 includes a part of the core material 13 in addition to the first sheet 16 and the base sheet part 19. may be included.

As described above, since the first sheet 16 and the second sheet 17 include the glass fiber reinforced resin layer constituting the reinforcing layer, the first reinforcing metal fitting 20 and the second reinforcing metal fitting are connected via the fixing member 30. 23 can be more firmly fixed to the panel main body 10. Moreover, the effect of suppressing the first sheet 16 and the second sheet 17 from falling off from the first reinforcing metal fittings 20 and the second reinforcing metal fittings 23 in the event of a fire or the like can also be expected.
The fastening piece 35 is inserted into the layer of the panel body 10 from the exposed second end surface 15a of the core material 13, as shown in FIGS. 2(b) and 3(a). With this configuration, the fastening piece 35 can be inserted into the layer of the panel body 10 without cutting or other processing on the second sheet 17, and the assembly work can be simplified. .

The end face protection piece 25 is provided with an insertion hole 27 through which the fastening piece 35 is inserted. With such a configuration, while it is possible to cover the exposed second end face 15a of the core material 13 with the end face protection piece 25, the fastening piece 35 can be attached to the panel body 10 through the insertion hole 27. Can be easily inserted into layers. Further, since the fastening piece 35 is inserted through the insertion hole 27 of the second reinforcing metal fitting 23, separation of the second reinforcing metal fitting 23 from the fixing member 30 can be more effectively suppressed. The first reinforcing metal fitting 20 is provided with an insertion hole 21b through which the fastener 3 fixed to the fastening piece 35 is inserted. With such a configuration, by inserting the fixing tool 3 into the insertion hole 21b of the first reinforcing metal fitting 20, separation of the first reinforcing metal fitting 20 from the fixing member 30 can be more effectively suppressed. As a result, the first reinforcing metal fitting 20 and the second reinforcing metal fitting 23 can be firmly connected by the fixing member 30 and the fixing member 3.

Specifically, the insertion hole 21b of the mounting piece portion 21 of the first reinforcing metal fitting 20 is constituted by a long hole formed in the end portion 21a of the plurality of long holes provided in the mounting piece portion 21. . This end 21a is overlapped with the end 28a of the base side piece 28 of the second reinforcing metal fitting 23 so as to be located closer to the panel body 10 than the end 28a of the base side piece 28 of the second reinforcing metal fitting 23. That is, the end 28a of the base side piece 28 is overlapped with the end 21a of the attachment piece 21 on the ceiling base 2 side. The end portion 28a of the base side piece 28 is located closer to the ceiling base 2 than the base side piece 28 on the inner side in the first direction, depending on the thickness of the mounting piece 21. (See also Figure 4(b)).
The insertion hole 27 of the end face protection piece portion 25 is formed so as to extend to a part of this end portion 28a. The insertion hole 27 is formed by cutting out a corner between the end face protection piece 25 and the end 28a.

In this example, the fixing member 30 has a structure in which a cover piece 31 and a fastening piece 35 are integrally provided via a bent part 34. With such a configuration, the ease of handling can be improved compared to a configuration in which the cover piece 31 and the fastening piece 35 are separate pieces. Further, as will be described later, when the fastening hole 36 and the insertion hole 32 are provided in the fastening piece part 35 and the cover piece part 31, alignment of these parts becomes unnecessary and the ease of installation can be improved. .
The cover piece portion 31 has a plate shape whose thickness direction is the panel thickness direction. This cover piece portion 31 is elongated in the second direction. This cover piece portion 31 is provided with an insertion hole 32 through which the fixing tool 3 is inserted. This cover piece portion 31 is provided with a grip portion 33 that stands up toward the ceiling base 2 side. The illustrated example shows an example in which a grip portion 33 is provided at the inner end of the cover piece 31 in the second direction (the tip side in the insertion direction of the fastening piece 35).

The fastening piece 35 has a plate shape whose thickness direction is the panel thickness direction. This fastening piece 35 is elongated in the second direction. The dimension of the fastening piece 35 in the second direction is larger than the dimension of the cover piece 31 in the same direction. The insertion direction tip 37 of the fastening piece 35 is tapered when viewed in the thickness direction. This fastening piece portion 35 is provided with a fastening hole 36 into which the fastening tool 3 is fastened. This fixing hole 36 is provided so as to be at a position that coincides with the insertion hole 32 of the cover piece 31 when viewed in the thickness direction. This fastening hole 36 may be a female threaded hole into which the fastening tool 3 is screwed together, or may be a pilot hole into which the fastening tool 3 is screwed. The fixing hole 36 and the insertion hole 32 are located inside the end 28a of the base side piece 28 in the second direction when the fixing member 30 is attached to the panel body 10, and are located inside the end 28a of the base side piece 28 in the second direction. It is provided so as to overlap the insertion hole 21b in the panel thickness direction.

The fastening piece 35 and the cover piece 31 are formed so that the sandwiched layer 10a, the end 21a of the attachment piece 21, and the end 28a of the base side piece 28 can be inserted between them. There is.
The thickness of the fastening piece 35 and the cover piece 31 may be determined appropriately from the viewpoint of strength and weight reduction, and may be, for example, about 0.5 mm to 3 mm.
As shown in FIGS. 2 and 3, this fixing member 30 is arranged such that the end 28a of the base side piece 28 is overlapped with the end 21a of the attachment piece 21, and the fixing piece is moved from the second end surface 15a. 35 may be inserted into the layer of the panel body 10, and the fixing tool 3 may be fixedly attached to the fixing piece 35. In this state, the fastening piece 35 that is integrally provided on the cover piece 31 via the bent part 34 is inserted into the insertion hole 27 of the second reinforcing metal fitting 23, and the cover piece 31 and the fastening piece 35 are in a state where they are fastened by the fixing tool 3 inserted through the insertion hole 21b of the first reinforcing metal fitting 20. Further, the sandwiched layer 10a including the first sheet 16 and the base sheet portion 19 is connected to the cover piece 31 and the fastening piece 35 together with the end 21a of the first reinforcing metal fitting 20 and the end 28a of the second reinforcing metal fitting 23. It becomes a state of being caught between.

In the example described above, the covering piece 31 and the fastening piece 35 are provided integrally, but they may be separate pieces. The fixing member 30 that fixes the first reinforcing metal fittings 20 and the second reinforcing metal fittings 23 to the panel main body 10 so as to connect them at the four corners of the panel main body 10 is not limited to the above-mentioned structure, but may be of various types. It may be configured as follows.
The first reinforcing metal fitting 20, the second reinforcing metal fitting 23, and the fixing member 30 may be formed from appropriate metal materials by extrusion molding, pressing, bending, or the like.

Next, a modified example of the ceiling panel will be described with reference to FIG. 5.
In the following modified examples, differences from the above-described example will be mainly explained, and similar configurations will be denoted by the same reference numerals and explanations thereof will be omitted or briefly explained. In addition, explanations of the same effects and the like as in the above-described example will be omitted or briefly explained.

As shown in FIGS. 5(a) to 5(c), the ceiling panel 1A according to this modification has a configuration of the engaging portion 26A provided on the end face protection piece portion 25A of the second reinforcing metal fitting 23A, which is different from the above example. are mainly different.
In this modification, the engagement protrusion 26Aa constituting the engagement portion 26A is elongated in the first direction. This engaging protrusion 26Aa is provided in a cut-and-raised shape on the end face protection piece 25A.
The engagement recess 26Ab is a through hole that penetrates the end face protection piece 25A in the thickness direction. The engagement recess 26Ab has a long hole shape whose dimension in the first direction is larger than the dimension of the engagement protrusion 26Aa in the same direction. As described above, the engagement dimension between the engagement recess 26Ab and the engagement protrusion 26Aa is such that when the engagement recess 26Ab and the engagement protrusion 26Aa are properly engaged with each other, the engagement recess 26Ab extends from the opening peripheral portion facing outward in the second direction of the engagement recess 26Ab. It may also be the dimension in the second direction up to the tip in the protruding direction of the inserted engagement protrusion 26Aa.
In this modification, when the engaging recesses 26Ab and the engaging protrusions 26Aa of the ceiling panels 1A, 1A adjacent to each other in the second direction are engaged with each other, as shown in FIG. A slight gap is formed between the end face protection pieces 25A, 25A.

In each of the above examples, the dimensions of the engagement recesses 26b and 26Ab in the first direction are larger than the dimensions of the engagement protrusions 26a and 26Aa in the same direction. It may be approximately the same dimension as 26Aa in the same direction.
In each of the above examples, the engaging protrusions 26a, 26Aa and the engaging recesses 26b, 26Ab are arranged alternately at intervals in the longitudinal direction of the end face protection pieces 25, 25A, and are symmetrical twice about the longitudinal center. Although an example is shown in which the position is set as follows, the configuration is not limited to this. For example, the structure may be such that the engaging protrusions 26a, 26Aa are provided on one side in the second direction of the ceiling panels 1, 1A, and the engaging recesses 26b, 26Ab are provided on the other side in the second direction. Joining portions 26 and 26A may be provided. Furthermore, a configuration may be adopted in which such engaging portions 26, 26A are not provided.

In the above example, the fastening piece 35 of the fixing member 30 is inserted into the layer of the panel body 10 on the indoor side of the base sheet part 19 and the first sheet 16. Not limited to examples. For example, the fastening piece 35 may be inserted into a layer of the panel body 10 that is closer to the indoor side than the first sheet 16 in a region where only the first sheet 16 is provided, and such a sheet is provided. It may also be inserted into a layer of the panel main body 10 that is not covered.
In the example described above, the first reinforcing metal fittings 20 and the second reinforcing metal fittings 23, 23A that reinforce the four sides of the panel body 10 are provided, but a configuration in which the first reinforcing metal fittings 20 are not provided is also possible. In this case, a configuration may be adopted in which the fixing members 30 for fixing the first reinforcing metal fittings 20 and the second reinforcing metal fittings 23, 23A to the four corners of the panel body 10 are not provided. Further, in this case, the present invention is not limited to the embodiment in which the fixing piece portion 22 extending substantially entirely in the second direction is provided as described above. For example, a plurality of fixing parts may be provided at the first end 11 of the panel body 10 at intervals in the second direction, and the first end 11 of the panel body 10 may be directly fixed to the ceiling base 2. The fixing part may be configured to be
The configuration of each part of the ceiling panels 1, 1A according to the above embodiments is not limited to the above embodiments, and various other modifications are possible.

1,1A Ceiling panel 10 Panel body 13 Core material 13b 2nd surface (front surface)
14 First end (end of side in first direction)
14a First end surface (end surface of the first end)
15a Second end surface (end surface on the side in the second direction)
17 Second sheet (sheet)
22 Fixed piece part (fixed part)
23, 23A Second reinforcing metal fitting (reinforcing metal fitting)
25, 25A End face protection piece portion 26, 26A Engagement portion 26a, 26Aa Engagement protrusion 26b, 26Ab Engagement recess 2 Ceiling base

Claims (5)

It has a core material having a rectangular shape in plan view, and a sheet that covers the surface of the core material and covers the end faces of the ends of both sides in the first direction of the four sides of the core material in a continuous manner from the part that covers the surface. A long piece having a panel main body and an end face protection piece portion that covers the exposed end face of both sides in the second direction of the four sides of the core material, and that is attached to each side of the panel main body along both sides in the second direction. What is claimed is: 1. A ceiling panel comprising: reinforcing metal fittings; and fixing portions provided on both sides of the panel body in a first direction and fixed to a ceiling base. In claim 1,
The ceiling panel is characterized in that the end face protection piece portion is provided with an engaging portion that engages with an engaging portion provided on the end face protection piece portion of the ceiling panel adjacent in the second direction. In claim 2,
The engaging portions include engaging protrusions and engaging recesses that are provided alternately at intervals in the longitudinal direction of the end face protection piece and at two-fold symmetrical positions with respect to the longitudinal center. A ceiling panel comprising: In claim 3,
A ceiling panel characterized in that a dimension of the engagement recess in the first direction is larger than a dimension of the engagement protrusion in the first direction. In claim 3 or 4,
The engagement protrusion and the engagement recess are formed such that, when engaged with each other, a dimension of the engagement protrusion in the second direction within the engagement recess is 0.5 mm to 3.0 mm. A ceiling panel characterized by:

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