JP7270215B2 - Ceiling panel and ceiling structure using the same - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling panel forming a ceiling of a building and a ceiling structure using the same.

2. Description of the Related Art Conventionally, as a ceiling panel, it is known that both side ends are fixed by screws or the like fixed at intervals along the longitudinal direction of a ceiling base such as a ceiling panel. In such a device, it is necessary to fasten a large number of screws while holding the ceiling panel from below.
For example, in Patent Document 1 below, a plurality of first support frames arranged in parallel in a long direction are arranged to intersect, and are supported by the first support frames so as to be movable along the longitudinal direction. A mounting structure for mounting the ceiling board to the second support frame is disclosed. In this mounting structure, the ceiling board is laterally fed along the ceiling surface to engage the first engaging portion with the second support frame on the destination side, and the second support frame on the rear side of the feed is engaged with the second support frame. The structure is such that the ceiling board is mounted by laterally feeding and engaging with the second engaging portion of the ceiling board.

JP-A-10-159242

However, in the mounting structure described in Patent Literature 1, the ceiling board is likely to be horizontally displaced toward the lateral feeding side, and further improvement is desired.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a ceiling panel and a ceiling structure using the same that can be stably fixed while improving workability.

In order to achieve the above object, the ceiling panel according to the present invention is fixed to ceiling joists that are elongated and extend in a first direction and are arranged parallel to each other at intervals in a second direction perpendicular to the first direction. A ceiling panel having a square flat panel body, and a first direction first end of the panel body, provided so as to extend in a second direction, and second direction end side portions are attached to the joists A first reinforcing part fixed by a fastener, and a first reinforcing part provided on a second end in the first direction of the panel body so as to extend in the second direction, and both end parts in the second direction are fixed to the joist by the fastener and a second reinforcing portion.

Further, in order to achieve the above object, the ceiling structure according to the present invention is a long ceiling structure extending in a first direction. A plurality of ceiling panels according to the present invention are fixed adjacent to each other in the first direction.

The ceiling panel and the ceiling structure using the ceiling panel according to the present invention can improve workability and can be stably fixed by having the configuration as described above.

(a) and (b) schematically show an example of a ceiling panel according to an embodiment of the present invention, (a) being a schematic plan view and (b) being a schematic side view. It is a partially broken schematic plan view which shows typically an example of the ceiling structure which concerns on one Embodiment of this invention using the same ceiling panel. (a) is a partially broken schematic vertical cross section corresponding to the XX line arrow view in FIG. 2, and (b) is a partially broken schematic vertical cross section corresponding to the YY line arrow view in FIG. It is a diagram.

An embodiment of the present invention will be described below with reference to the drawings.
It should be noted that some of the detailed reference numerals attached to other drawings are omitted in some of the drawings.
Further, in the following embodiments, directions such as the vertical direction will be described based on the state in which the ceiling panel according to the present embodiment is constructed.
1 to 3 are diagrams schematically showing an example of a ceiling panel according to this embodiment and an example of a ceiling structure according to this embodiment using the same ceiling panel.

A ceiling panel 1 according to the present embodiment includes a rectangular flat panel body 10 as shown in FIGS. 1(a) and 1(b). As shown in FIGS. 2 and 3(a) and (b), the ceiling panel 1 is elongated in a first direction and arranged parallel to each other at intervals in a second direction orthogonal to the first direction. It is fixed to the joists 2, 2 provided.
The joist 2 to which the ceiling panel 1 is fixed may be a wooden joist, but in this embodiment, it is made of steel made of a ferromagnetic material. Such a ceiling joist 2 may be made of a light iron material and constitute a so-called light ceiling base (steel ceiling base). In addition, the joists 2 may be channel-shaped (channel-shaped) opening upward, or may be provided with lip portions formed so as to be folded back at the upper ends of both side walls. It's okay.
In addition, a plurality of ceiling joists 2 are arranged in parallel at substantially equal intervals in a second direction perpendicular to the vertical direction and the first direction (at substantially equal pitches) to form a ceiling base structure.

In addition, as the steel ceiling base, the steel joist supports 3 are arranged in parallel in a long shape extending in the second direction at substantially equal intervals in the first direction (at substantially equal pitch). It may be configured to support the edge 2 . The joist receiver 3 may be a channel-shaped steel (channel-shaped) opening laterally, or may be configured to support the joist 2 via a known clip as appropriate. In addition, as the steel ceiling base, a joist joint that joins the joists 2, 2 adjacent in the longitudinal direction, and a joist receiver joint that joins the joists 3, 3 adjacent in the longitudinal direction. It may be provided. Further, the steel ceiling substrate may be provided with a hanger for suspending and supporting the ceiling support 3, or a hanger bolt inserted through an insertion hole of the hanger and fixed with a nut.

The ceiling panel 1 may be constructed as the ceiling of relatively small buildings such as residences and offices, or constructed as the ceiling of various relatively large buildings such as gymnasiums, halls, shopping malls, factories, and schools. It may be something that is done.
Further, the ceiling panel 1 may have a mass per unit area (1 m ² ) of 2.0 kg or less, preferably 1.0 kg or less, more preferably 0.78 kg. The following may be used.

The panel main body 10 has a substantially rectangular shape in plan view (when viewed in the thickness direction). In this embodiment, the panel main body 10 has a substantially square shape in plan view, but may have a substantially rectangular shape. In addition, the size of the panel body 10 in a plan view may be an appropriate size from the viewpoint of handleability, workability, etc. For example, the length of one side may be 0.3 m or more. , 2.0 m or less. In addition, in the panel body 10 having a substantially square shape, the length of one side may be 0.4 m or more and 1.5 m or less, or about 0.9 m to 1.2 m. . Further, in the panel body 10 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 2.0 m or less.
Also, the thickness of the panel body 10 may be, for example, about 3.0 mm to 15.0 mm, depending on the layer structure and the like.

The panel main body 10 may be made of a gypsum board, a calcium silicate board, or the like, but in this embodiment, as shown in FIG. Examples of the foamed resin base material 11 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 base material 11 include those formed from mineral fibers such as glass wool and rock wool. In the illustrated example, the base material 11 is a foamed resin layer. The base material 11 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.
Further, the panel main body 10 has a structure in which a surface layer 12 is provided on one side in the thickness direction of the base material 11, which is the indoor side. The surface layer 12 may include a flame-retardant layer.

The flame-retardant layer as described above may have an appropriate structure so that the ceiling panel 1 satisfies the technical standards regarding the performance required for noncombustible materials, etc., stipulated in the Building Standards Act. For example, the ceiling panel 1 may be configured to meet the standard of "flame-retardant material" in the technical standards, preferably, it may be configured to meet the standard of "quasi-noncombustible material", More preferably, it may be configured to meet the criteria for "noncombustible materials." Further, for example, the flame-retardant layer may be a thin foil-shaped aluminum sheet.
Further, the surface layer 12 may be provided with a reinforcing layer containing reinforcing fibers such as glass fibers. The reinforcing layer may be a reinforcing 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 a resin. In addition, the surface (indoor side) facing the lower side (indoor side) of the surface layer 12 may be a decorative surface that has been subjected to appropriate surface decorative treatment such as attachment of a decorative sheet, printing, painting, etc. Alternatively, it may be a base surface to which an appropriate decorative sheet is adhered.

Further, the panel main body 10 has a configuration in which a reinforcing layer 13 is laminated on the back surface side (ceiling base side) of the base material 11 . With such a configuration, it is possible to suppress sagging by the reinforcing layer 13 on the back side while reducing the weight by the base material 11 as described above. The reinforcing layer 13 may be a reinforcing 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.
Further, the panel main body 10 has a configuration in which end surface layers 14 are provided on the four side end surfaces of the substrate 11 . The edge layer 14 may have the same structure as the surface layer 12 . Further, the edge layer 14 may be provided continuously from the surface layer 12, or may be provided separately in the form of an edge sheet.

2 and 3, the ceiling panel 1 is provided at the first end portion 5 of the panel body 10 in the first direction so as to extend in the second direction. 2, 2 is provided with a first reinforcing part 15 fixed by fasteners 4, 4. As shown in FIG. Also, the ceiling panel 1 is provided on the first direction second end portion 6 of the panel body 10 so as to extend in the second direction, and the second direction end side portions are attached to the joists 2, 2 by the fasteners 4, 4. It has a fixed second reinforcing part 16 . With such a configuration, the second direction end portions of the first direction first end portion 5 and the second end portion 6 of the ceiling panel 1 are fixed via the first reinforcing portion 15 and the second reinforcing portion 16 . It can be fixed to the joists 2, 2 on both sides by means of tools 4, 4. As a result, it is possible to improve the fixing strength and improve the workability without requiring a large number of screws. Further, since the first reinforcing portion 15 and the second reinforcing portion 16 are provided so as to extend in the second direction, both side portions of the ceiling panel 1 in the first direction can be reinforced. It is possible to suppress sagging of the first direction both side portions of the ceiling panel 1 that is bridged therebetween. In addition, in the present embodiment, the panel body 10 is configured to include the foamed resin-based or fiber-based base material 11 as described above. Therefore, compared with a gypsum board or the like, it is possible to reinforce both end portions in the first direction by the first reinforcing portion 15 and the second reinforcing portion 16 while reducing the weight.

Further, in the present embodiment, the ceiling panel 1 is configured such that the held end portions 7, 7 as the second direction side end portions are held by the joists 2, 2 by the magnets 17 or the adhesive material. With such a configuration, it is possible to reduce the burden on the operator when fixing the first end 5 and the second end 6 of the panel body 10 in the first direction by the magnet 17 or the adhesive material. In this embodiment, as shown in FIG. It has a configuration in which magnets 17, 17 are provided.
The magnet 17 is provided so as to extend in the first direction along the held end portion 7, as shown in FIG. 1(a). The magnets 17 may be provided so that the ceiling panel 1 can be held (temporarily held) by being attracted to the ceiling panels 2, 2 on both sides in the second direction.

In addition, in the present embodiment, a plurality of (five in the figure) magnets 17 are provided in the held end portion 7 at intervals in the first direction. The drawing shows an example in which a plurality of magnets 17 are provided at approximately equal intervals in the first direction. Moreover, the example which provided the magnets 17 and 17 also in the 1st end part 5 vicinity part and the 2nd end part 6 vicinity part, respectively is shown. Instead of such a configuration, a configuration in which the magnet 17 is provided over substantially the entirety of the held end portion 7 in the first direction may be employed, or the magnet 17 may be provided only in the substantially central portion side portion in the first direction. It is good also as the structure etc. which were provided. The length dimension along the first direction and the width dimension along the second direction of the magnet 17 are determined from the standpoint of holdability (temporary holdability) of the ceiling panel 1, From the viewpoint of suppressing sagging in the middle of one direction, from the viewpoint of weight reduction, etc., the dimensions may be set appropriately.

The magnet 17 has a plate-like shape with its thickness direction aligned with the thickness direction of the panel body 10 . The thickness dimension of this magnet 17 may be about 1 mm to 5 mm. Further, in the present embodiment, the magnets 17 are arranged in layers on the rear surface 10a of the panel main body 10. As shown in FIG. The magnet 17 may be fixed to the panel main body 10 with an appropriate adhesive material, adhesive, or the like. In addition, when the joist 2 is made of a ferromagnetic material as described above, the part to be attracted of the joist 2 attracted by the magnetic force of the magnet 17 is the entire lower surface (indoor side surface) of the joist 2. Become. In addition, instead of such a mode, a suitable sheet-like magnet, sheet-like ferromagnetic material, or the like is provided as a part to be attracted as an attached or embedded form on the lower surface side of the joist 2 made of a non-magnetic material. may be In addition, instead of or in addition to such a magnet 17, hook-and-loop fasteners or adhesives may be used as the held portions for holding the held ends 7, 7 on both sides of the ceiling panel 1 in the second direction to the joists 2, 2. It may be a material or the like, and furthermore, a configuration in which such a held portion is not provided may be employed.

The first reinforcing portion 15 and the second reinforcing portion 16 are provided along the rear surface 10a of the panel body 10 in this embodiment. With such a configuration, compared to the structure in which the first reinforcing portion 15 and the second reinforcing portion 16 are provided on the surface side of the panel body 10, these can be made less noticeable from the inside of the room. Also, the first reinforcing portion 15 and the second reinforcing portion 16 are separate from the panel body 10 . The first reinforcing portion 15 and the second reinforcing portion 16 may be appropriately fixed to the panel body 10 by fasteners such as screws, adhesives, adhesives, or the like. In addition, for example, the first reinforcing portion 15 and the second reinforcing portion 16 are laminated in a state in which the fixed piece portion provided thereon and the fixed piece portion inserted into the layer of the panel body 10 are laminated. It is also possible to adopt a mode of fixing to the panel main body 10 by fastening the portion and the fixing piece portion with a fastener. With such a configuration, the back surface side layer (layer to be sandwiched) of the panel body 10 is sandwiched between the fixed piece portion and the fixed piece portion. It can be mechanically fixed to the two ends 6, so to speak. In this case, it is also possible to provide an appropriate notch into which the fixing piece is inserted so as to open on the back surface 10a side of the panel body 10 .

As shown in FIG. 1B, the first reinforcing portion 15 and the second reinforcing portion 16 are plate-shaped with their thickness direction along the thickness direction of the panel body 10 . Further, as shown in FIG. 1(a), the first reinforcing portion 15 and the second reinforcing portion 16 are formed in a substantially strip shape (bar shape) elongated in the second direction when viewed in the panel thickness direction. ing. Further, in this embodiment, the first reinforcing portion 15 and the second reinforcing portion 16 are provided on the first end portion 5 and the second end portion 6 respectively over the entire second direction. With such a configuration, it is possible to reduce the need to provide a hoist with a relatively small pitch in the second direction, as in the conventional case, and although it is a configuration in which the joiner or the like is not exposed on the surface side, It is possible to suppress the sagging of the ceiling panel 1 at the central portion in the second direction. In other words, it is possible to improve the holding strength of the ceiling panel 1 while reducing the weight of the whole ceiling structure including the ceiling joist 2, and to suppress the drooping and improve the appearance on the surface side.

Moreover, in this embodiment, as shown in FIG. It is configured so as not to protrude outward. In the illustrated example, the end surfaces of the first reinforcing portion 15 and the second reinforcing portion 16 facing outward in the first direction and the respective end surfaces of the first end portion 5 and the second end portion 6 are formed in substantially the same plane. showing.
In addition, instead of the above-described aspects, the first reinforcing portion 15 and the second reinforcing portion 16 are provided with fixing pieces that project outward in the first direction from the panel body 10 and are fixed to the joist 2. may be configured as follows. In this case, for example, the first reinforcing portion 15 of the already constructed ceiling panel 1 and the second reinforcing portion 16 of the adjacent ceiling panel 1 are overlapped and fixed to the ceiling joist 2. good too. Further, in this case, the second reinforcing portion 16 may be configured to have a bent portion, a recessed step portion, or the like corresponding to the thickness of the first reinforcing portion 15 . In addition, when both or one of the first reinforcing portion 15 and the second reinforcing portion 16 is exposed between the adjacent ceiling panels 1, 1, an appropriate joint is formed so as to close the space between the ceiling panels 1, 1. A configuration in which a member is provided may be employed.

Moreover, the thickness dimension of the first reinforcing portion 15 and the second reinforcing portion 16 may be substantially the same as the thickness of the magnet 17 . In other words, the contact surfaces of the first reinforcing portion 15 and the second reinforcing portion 16 that contact the joist 2 and the contact surface of the magnet 17 that contacts the joist 2 may be substantially coplanar. . With such a configuration, these contact surfaces can be stably brought into contact with the ceiling joist 2 while reducing the necessity of embedding the magnets 17 .
Note that the thickness dimensions of the first reinforcement part 15 and the second reinforcement part 16 may be set appropriately from the viewpoint of strength, weight reduction, etc. For example, they may be set to about 0.5 mm to 3 mm. . Also, the first reinforcing portion 15 and the second reinforcing portion 16 may be made of an appropriate metallic material. In addition, as a configuration in which insertion holes through which the fasteners 4 to be fastened to the joist 2 are inserted are provided at the respective ends in the longitudinal direction (second direction) of the first reinforcing portion 15 and the second reinforcing portion 16. good too. Further, in the first reinforcing portion 15 and the second reinforcing portion 16, appropriate punched elongated holes are provided from the viewpoint of weight reduction, and bent portions, folded portions, etc. are provided from the viewpoint of improving strength. You can

The ceiling structure using the ceiling panel 1 configured as described above has a long shape extending in the first direction and a plurality of ceiling panels on the joists 2, 2 arranged in parallel with a gap in the second direction. 1, 1 are fixed adjacent to each other in the first direction. In these ceiling panels 1, 1, the second direction end side portions of the first reinforcing portion 15 and the second reinforcing portion 16 on both sides in the first direction are fixed to the joists 2, 2 on both sides by fasteners 4, 4, It is fixed against the edges 2,2.
In addition, the ceiling structure has a structure in which the held end portions 7, 7 on both sides in the second direction of the ceiling panel 1 are fixed to the joists 2, 2 by magnets 17, 17 or an adhesive material. With such a configuration, it is possible to suppress drooping of the held end portions 7, 7 on both sides of the ceiling panel 1 in the second direction.
3, the fixing structure has a structure in which the heads of fasteners 4 such as screws, nails, staples, etc. are immersed in the layers of the ceiling panel 1. As shown in FIG. With such a configuration, the head of the fixture 4 can be made inconspicuous from the inside of the room. Such a fastener 4 may be driven by a driving machine that operates using compressed air as a drive source or by an electric driving machine. In the illustrated example, the fastener 4 having a head portion and a shaft portion with relatively large diameters is illustrated, but the present invention is not limited to such an aspect.

Further, the ceiling structure may have a mass of 2 kg or less per 1 m ² of the ceiling structure including the ceiling panel 1, the ceiling joist 2, and the ceiling joist support 3 for supporting them. With such a configuration, the weight of the entire ceiling system can be reduced, and the damage caused when the ceiling system falls can be reduced. The ceiling structure having a mass of 2 kg or less per 1 m ² may include the above-described clips, joist joints, and joist receiving joints, but may not include hangers, hanging bolts, and nuts. The mass per 1 m ² of the base including these clips, joist joints, joist receiver joints, joist 2 and joist receiver 3 may be an appropriate mass from the viewpoint of weight reduction and strength. It may be 1.5 kg or less, preferably 0.9 kg or more and 1.27 kg or less.

Also, in the example shown in the figure, the end surfaces of the ceiling panels 1, 1 adjacent in the first direction are brought into contact with each other, and the end surfaces of the ceiling panels 1, 1 adjacent in the second direction are brought into contact with each other. However, it is also possible to adopt a configuration in which a watermark-like gap is formed in both or one of these. In this case, an appropriate abutting piece abuts against the side end surface of the ceiling panel 1 adjacent to both or one of the longitudinal ends of the first reinforcing portion 15 and the second reinforcing portion 16. It is good also as the structure etc. which provided the part.
Further, in the present embodiment, an example in which the first reinforcing portion 15 and the second reinforcing portion 16 are provided along the back surface 10a of the panel body 10 is shown. It may be provided along the surface, or the like, and other various modifications are possible. For example, the first reinforcing portion 15 and the second reinforcing portion 16 may be formed in such a shape that a recessed groove opening in the first direction for receiving the first end portion 5 and the second end portion 6 of the panel body 10 is provided. good. The configuration of each part of the ceiling panel 1 according to the present embodiment is not limited to the above aspects, and various modifications are possible.

1 ceiling panel 5 first end (first end in first direction)
6 second end (first direction second end)
7 held end (second direction end)
REFERENCE SIGNS LIST 10 panel body 11 base material 15 first reinforcement 16 second reinforcement 17 magnet 2 joist 4 fastener

Claims (4)

A ceiling panel fixed to a ceiling panel extending in a first direction and arranged in parallel with a space in a second direction orthogonal to the first direction,
a rectangular flat plate-shaped panel body; a reinforcing portion, a second reinforcing portion provided so as to extend in the second direction at the first direction second end portion of the panel body, and having second direction end side portions fixed to the joist by fasteners; A ceiling panel comprising: In claim 1,
A ceiling panel, wherein the panel body includes a foamed resin-based or fiber-based base material. A plurality of ceiling panels according to claim 1 or 2 are mounted on the long joists extending in the first direction and arranged in parallel with a gap in the second direction orthogonal to the first direction. A ceiling structure characterized by being adjacent and fixed in one direction. In claim 3,
A ceiling structure, wherein both ends of the ceiling panel in the second direction are fixed to the ceiling joists by magnets or an adhesive material.

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