WO2020261643A1 - Ceiling panel and ceiling structure using same - Google Patents

Abstract

A ceiling panel 1 fixed to ceiling joists 2, 2 that have an elongated shape extending in a first direction and that are arranged in parallel in a second direction orthogonal to the first direction with spaces therebetween, said ceiling panel comprising: a flat rectangular panel body 10; a reinforcing part 20 that is provided on a first end 6 of the panel body in the first direction so as to extend in the second direction and that has sites on both ends in the second direction fixed to the ceiling joists with fasteners 3; and a hook 16 that is provided on a second end 7 of the panel body in the first direction and that is hooked to the reinforcing part of a ceiling panel adjacent in the first direction.

Description

Ceiling panel and ceiling structure using it

The present invention relates to a ceiling panel constituting the ceiling of a building and a ceiling structure using the same.

Conventionally, as a ceiling panel, it is known that both end portions are fixed by screws or the like fixed at intervals along the longitudinal direction of the ceiling base such as a field edge. In such a case, it was necessary to perform a large number of screws while holding the ceiling panel from the lower side.
For example, in Patent Document 1 below, it is arranged so as to intersect a plurality of first support frames arranged long and parallel in the first direction, and is movably supported by the first support frame along the longitudinal direction. A mounting structure for mounting the ceiling board on the second support frame is disclosed. In this mounting structure, the ceiling board is horizontally fed horizontally 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 the same. The structure is such that the ceiling board is attached by engaging it with the second engaging portion of the ceiling board by operating the horizontal feed.

Japanese Unexamined Patent Publication No. 10-159242

However, in the mounting structure described in Patent Document 1, it is necessary to move the ceiling board horizontally while holding it from the lower side, and further slide the second support frame on the rear side of the feed while holding the ceiling board. Therefore, further improvement is desired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a ceiling panel capable of improving workability and a ceiling structure using the ceiling panel.

In order to achieve the above object, the ceiling panel according to the present invention is fixed to a field edge which is elongated in the first direction and is arranged in parallel at intervals in the second direction orthogonal to the first direction. The ceiling panel is provided at the square flat plate-shaped panel main body and the first end portion of the panel main body in the first direction so as to extend in the second direction, and the portions on both ends in the second direction are on the field edge. It is provided with a reinforcing portion fixed by a fixing tool and a hooking portion provided at the second end portion of the panel body in the first direction and hooked on the reinforcing portion of the ceiling panel adjacent to the first direction. It is characterized by.

Further, in order to achieve the above object, the ceiling structure according to the present invention is made of steel which is elongated in the first direction and arranged in parallel at intervals in the second direction orthogonal to the first direction. The field edges of the sword are elongated in the second direction and supported by steel field edge holders arranged in parallel with a space in the first direction, and are arranged in a space in the second direction. A plurality of ceiling panels according to the present invention are fixed adjacent to the field edge in the first direction, and the mass per 1 m ^{2 of the} ceiling structure including the ceiling panel, the field edge and the field edge receiver. Is 2 kg or less.

The ceiling panel according to the present invention and the ceiling structure using the ceiling panel have the above-mentioned configuration, so that the workability can be improved.

(A) and (b) schematically show an example of a ceiling panel according to an embodiment of the present invention, (a) is a schematic plan view, and (b) is a schematic side view. (A) is a schematic plan view of a partial fracture showing a state in which the ceiling panel is constructed, and (b) is a schematic vertical sectional view of a partial fracture corresponding to the X-ray arrow in (a). Is. (A) is a partially broken schematic perspective view corresponding to the Z1 portion in FIG. 2 (a), and (b) is a partially broken schematic perspective view corresponding to the Z2 portion in FIG. 1 (a). ) Is a partially broken schematic perspective view corresponding to the Z3 portion in FIG. 1 (a). (A) is a schematic exploded plan view of a partial break corresponding to the Z4 portion in FIG. 1 (a), and FIG. 1 (b) is a schematic partial break corresponding to the arrow of YY in FIG. 1 (a). The vertical sectional view (c) is a schematic vertical sectional view of a partially broken portion corresponding to (b), schematically showing a modified example of the connecting member included in the ceiling panel. (A) is a schematic perspective view schematically showing an example of the construction procedure of the ceiling panel, (b) is a schematic view of an example of the construction procedure, and a partial breakage corresponding to FIG. 2 (b) is shown. It is a schematic vertical sectional view. (A) is a schematic perspective view schematically showing an example of the construction procedure of the ceiling panel, (b) is a schematic view of an example of the construction procedure, and a partial fracture corresponding to FIG. 2 (b) is shown. It is a schematic vertical sectional view.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In some figures, some of the detailed symbols attached to the other figures are omitted.
Further, in the following embodiment, the vertical direction and the like will be described with reference to the state in which the ceiling panel according to the present embodiment is constructed or the state in which the ceiling panel is constructed.
1 to 6 are diagrams schematically showing an example of a ceiling panel according to the present embodiment, an example of a construction procedure of the ceiling panel, and an example of a ceiling structure according to the present embodiment using the ceiling panel.

As shown in FIGS. 1A and 1B, the ceiling panel 1 according to the present embodiment includes a square flat plate-shaped panel main body 10. As shown in FIGS. 2A and 2B, the ceiling panel 1 is elongated in the first direction and is arranged in parallel with a space in the second direction orthogonal to the first direction. It is fixed to the fields 2 and 2.
The field edge 2 to which the ceiling panel 1 is fixed may be a wooden field edge, but in the present embodiment, it is made of steel made of a ferromagnetic material. Such a field edge 2 may be made of a light iron material and may form a so-called light ceiling base (steel ceiling base). Further, the field edge 2 may be in the shape of a channel steel (channel shape) that opens upward, or has a structure in which a lip portion formed so as to be folded back is provided at the upper ends of both side walls. It may be.
Further, a plurality of field edges 2 are arranged in parallel (with substantially equal pitch) in the second direction orthogonal to the vertical direction and the first direction at substantially equal intervals to form a ceiling base structure.

Further, as the steel ceiling base, a steel field edge receiver 2A, which is long and extends in the second direction and is arranged in parallel with substantially equal intervals (at approximately equal pitches) in the first direction, is used. It may be configured to support the edge 2. The field edge receiver 2A may have a channel steel shape (channel shape) that opens laterally, or may appropriately support the field edge 2 via a known clip. Further, as the steel ceiling base, a field edge joint for joining the field edges 2 and 2 adjacent in the longitudinal direction and a field edge receiving joint for joining the field edge receivers 2A and 2A adjacent in the longitudinal direction are used. It may be provided. Further, the steel ceiling base may be provided with a hanger that suspends and supports the field edge receiver 2A, a hanging bolt that is inserted into the insertion hole of the hanger and fixed with a nut, or the like.

The ceiling panel 1 may be constructed as the ceiling of a relatively small building such as a residence or an office, and may be constructed as the ceiling of various relatively large buildings such as a gymnasium, a hall, a shopping mall, a factory, or a school. It may be done.
Further, the ceiling panel 1 may have a mass of 2.0 kg or less per unit area (1 m ² ), preferably 1.0 kg or less, and more preferably 0.78 kg. It may be as follows.

The panel body 10 has a substantially rectangular shape when viewed in a plan view (viewed in the thickness direction). In the present embodiment, the panel body 10 has a substantially square shape in a plan view, but may have a substantially rectangular shape. Further, 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 may be used. Further, in the panel main 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 0.9 m to 1.2 m or so. .. Further, in the panel main 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.
The thickness of the panel body 10 may be, for example, about 3.0 mm to 15.0 mm, although it depends on the layer structure and the like.

The panel body 10 may be a gypsum board, a calcium silicate board, or the like, but in the present embodiment, as shown in FIG. 2B, the panel body 10 is configured to include a foamed resin-based or fiber-based base material 11. ing. Examples of the foamed resin-based base material 11 include those formed from a resin composition such as polyurethane resin, polystyrene resin, polyethylene resin, polypropylene resin, phenol resin, and epoxy resin. Examples of the fiber-based 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 main body 10, and the thickness may be, for example, about 80% to 99% of the thickness of the panel main body 10.
Further, the panel main body 10 is configured to have a surface layer 12 provided on one side in the thickness direction, which is the indoor side of the base material 11. The surface layer 12 may include a flame-retardant layer.

As the flame-retardant layer as described above, the ceiling panel 1 may be appropriately configured so as to satisfy the technical standards regarding the performance required for non-combustible materials and the like specified in the Building Standards Act. For example, the ceiling panel 1 may be configured to satisfy the standard of "flame-retardant material" in the technical standard, and preferably may be configured to satisfy the standard of "quasi-non-combustible material". More preferably, it may be configured to meet the criteria for "non-combustible material". Further, for example, the flame-retardant layer may be a foil-shaped aluminum sheet in the form of a thin 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 a glass cloth, or may be a fiber reinforced resin layer such as a glass fiber reinforced resin layer in which the reinforcing fiber sheet is impregnated with a resin. Further, the surface (indoor side surface) facing the lower side (indoor side) of the surface layer 12 may be a decorative surface to which a decorative sheet is attached or an appropriate surface decorative treatment such as printing or painting is applied. Alternatively, it may be a base surface to which an appropriate decorative sheet is attached.

Further, the panel main body 10 has a structure in which the 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 surface side while reducing the weight by the base material 11 as described above. As described above, the reinforcing layer 13 may be a reinforcing fiber sheet such as a glass cloth, or may be a fiber reinforced resin layer such as a glass fiber reinforced resin layer in which the reinforcing fiber sheet is impregnated with a resin.
Further, the panel main body 10 is configured to have an end face layer provided on the side end faces of the four circumferences of the base material 11. The end face layer may have the same structure as the surface layer 12. Further, the end face layer may be provided in a series from the surface layer 12, or may be separately provided in an edge sheet shape.

Further, as shown in FIGS. 2A and 2B, the ceiling panel 1 is provided at the first end portion 6 of the panel main body 10 in the first direction so as to extend in the second direction, and both ends in the second direction. The side portion is provided with a reinforcing member 20 constituting a reinforcing portion in which the side portions are fixed to the field edges 2 and 2 by the fixing tools 3 and 3. With such a configuration, the portions on both ends of the second direction of the first end portion 6 in the first direction of the ceiling panel 1 are fixed to the field edges 2 and 2 on both sides by the fasteners 3 and 3 via the reinforcing member 20. It is possible to improve the fixing strength. Further, since the reinforcing member 20 is provided so as to extend in the second direction, it is possible to reinforce the portion 6 side of the first end portion 6 in the first direction of the ceiling panel 1, and it is bridged between the field edges 2 and 2. It is possible to suppress the sagging of the portion 6 of the first end portion 6 in the first direction of the ceiling panel 1.
Further, the ceiling panel 1 is provided at the second end portion 7 in the first direction of the panel main body 10, and includes a hook portion 16 constituting a connecting portion that is hooked on the reinforcing member 20 of the ceiling panel 1 adjacent to the first direction. ing. With such a configuration, the first end portion 6 in the first direction is hooked on the reinforcing member 20 of the ceiling panel 1 fixed to the field edges 2 and 2 on both sides by the fixing tools 3 and 3 via the reinforcing member 20. By hooking 16, the ceiling panel 1 can be stably held on the second end portion 7 side in the first direction. Further, in the state where the second end portion 7 side in the first direction is hooked and held in this way, the field edges on both sides of the first end portion 6 side in the first direction are held by the fasteners 3 and 3 via the reinforcing member 20. It can be fixed to 2 and 2 and workability can be improved.

Further, in the present embodiment, the ceiling panel 1 is configured such that the held end portions 8 and 8 as the side end portions in the second direction are held by the field edges 2 and 2. In the present embodiment, as shown in FIG. 1A, the panel body 10 is adsorbed on the back surface 10a side of the held end portions 8 and 8 on both sides in the second direction by the adsorbed portions of the field edges 2 and 2. Magnets 9 and 9 are provided. With such a configuration, the hooking portion 16 of the second end portion 7 is hooked on the reinforcing member 20 of the ceiling panel 1 adjacent in the first direction, and the magnets of the held end portions 8 and 8 on both sides in the second direction. The ceiling panels 1 can be attached or temporarily fixed by adsorbing 9 and 9 to the adsorptioned portions of the field edges 2 and 2. As a result, the ceiling panel 1 can be easily constructed, the number of construction members can be reduced, and the construction by one person can be easily performed.

As shown in FIG. 1A, the magnet 9 is provided so as to extend in the first direction along the held end portion 8. The magnet 9 may be provided so that the ceiling panel 1 can be held (temporarily held) by being attracted to the field edges 2 and 2 on both sides in the second direction.
Further, in the present embodiment, the held end portion 8 is provided with a plurality of magnets 9 (five in the illustrated example) at intervals in the first direction. In the illustrated example, an example in which a plurality of magnets 9 are provided at substantially equal intervals in the first direction is shown. Further, an example is shown in which magnets 9 and 9 are provided in the vicinity of the first end portion 6 and the vicinity of the second end portion 7, respectively. In addition, instead of such a configuration, the magnet 9 may be provided over substantially the entire first direction of the held end portion 8, or the magnet 9 may be provided only on the substantially central portion side portion in the first direction. It may be configured as provided. The length dimension along the first direction and the width dimension along the second direction of the magnet 9 suppress the sagging of the ceiling panel 1 in the middle of the first direction from the viewpoint of the holdability (temporary holdability) of the ceiling panel 1. The dimensions may be appropriate from the viewpoint of weight reduction and weight reduction.

Further, the magnet 9 has a plate shape in which the thickness direction is aligned with the thickness direction of the panel body 10 (see also FIG. 1 (b)). The thickness dimension of the magnet 9 may be about 1 mm to 5 mm. Further, in the present embodiment, the magnet 9 is provided in a laminated manner on the back surface 10a of the panel main body 10. The magnet 9 may be fixed to the panel main body 10 with an appropriate adhesive, adhesive, or the like. Further, the attracted portion of the field edge 2 attracted by the magnetic force of the magnet 9 is the entire lower surface (indoor side surface) of the field edge 2 when the field edge 2 is made of a ferromagnet as described above. Become. Instead of such an aspect, a configuration in which an appropriate sheet-shaped magnet, sheet-shaped ferromagnet, or the like is provided as an adsorbed portion on the lower surface side of the field edge 2 made of a non-magnetic material in an attached or embedded shape, etc. May be. Further, as the held portion for holding the held ends 8 and 8 on both sides of the ceiling panel 1 in the second direction by the field edges 2 and 2, instead of or in addition to such a magnet 9, a hook-and-loop fastener or adhesive is used. It may be a material or the like, and further, it may have a configuration in which such a held portion is not provided.

As shown in FIGS. 1A and 1B, the hooking portion 16 extends from the extending direction tip portion of the extending portion 17 extending outward from the second end portion 7 of the panel main body 10 in the first direction. It is provided with a folded piece 17a formed so as to be bent toward the indoor side and further folded inward in the first direction. The reinforcing member 20 is provided on the back surface 10a side of the first end portion 6 in the first direction of the panel main body 10, and includes a hooked portion 25 that constitutes a connected portion. As shown in FIGS. 5 and 6, the hooked portion 25 is in a state where the second end portion 7 of the ceiling panel 1 adjacent in the first direction is positioned above the first end portion 6. The folded piece 17a of the ceiling panel 1 can be hooked and held. With such a configuration, the folded piece 17a of the unconstructed ceiling panel 1 is hooked on the hooked portion 25 of the already constructed ceiling panel 1 from the lower side with the second end 7 side facing upward. The ceiling panel 1 can be held. As a result, the workability can be improved as compared with the case where it is necessary to move the product horizontally while holding it horizontally at a high place. Further, from the state where the second end portion 7 side is held in this way, the first end portion 6 side can be raised and fixed to the field edge 2 by rotating the second end portion 7 side as a fulcrum. In particular, in the present embodiment, since the magnets 9 and 9 are provided on the held end portions 8 and 8 as described above, the first end portion 6 side is changed from the state where the second end portion 7 side is held. If it is raised, the ceiling panel 1 can be easily held (temporarily held) with respect to the field edges 2 and 2 by the magnets 9 and 9 of the held end portions 8 and 8.

On the base end side of the hooking portion 16, the first of the ceiling panels 1 and 1 adjacent to each other by being abutted against the contacted surface 26a provided on the hooked portion 25 of the ceiling panel 1 adjacent in the first direction. The contact surface 16a that restricts the movement toward the one-way proximity side is provided so as to face the folded piece 17a. With such a configuration, the unconstructed ceiling panel 1 is moved with respect to the already constructed ceiling panel 1 while being held by the already constructed ceiling panel 1 as described above, and the contact surface 16a is covered. By contacting the contact surface 26a, the ceiling panels 1 and 1 can be easily aligned with each other. As a result, as shown in FIG. 2B, when a watermark-like gap is provided between the end faces of the ceiling panels 1 and 1 adjacent in the first direction facing in the first direction, each ceiling panel The gap between 1 and 1 can be easily equalized. The gap between the ceiling panels 1 and 1 adjacent to each other in the first direction may be about 1 mm to 15 mm.

Further, the hooking portion 16 is provided on the connecting member 15 having the base end side piece portion 18 arranged along the back surface 10a of the second end portion 7. With such a configuration, the connecting member 15 can be made inconspicuous from the surface side. As shown in FIGS. 4A and 4B, the connecting member 15 opens at the back surface 10a of the second end portion 7 and extends from the notch 14 provided so as to extend in the first direction. It is fixed to the second end portion 7 by a fixing tool 4 which is fastened so as to penetrate the base end side piece portion 18 through the insertion piece portion 19 inserted into the layer of 10. With such a configuration, the back surface side layer (holding layer) 13a of the panel main body 10 is sandwiched between the insertion piece portion 19 and the base end side piece portion 18, and the insertion piece portion 19 is stopped. The connecting member 15 can be mechanically fixed to the second end portion 7 by the attached fixing tool 4. As a result, although the connecting member 15 is provided on the back surface side, the base end side piece 18 is fixed to the second end 7 by an adhesive or a fixing tool 4 or the like that is fastened only to the panel body 10. It is possible to improve the fixing strength of the connecting member 15 with respect to the second end portion 7 as compared with the above. Further, as compared with the case where the insertion piece 19 is inserted into the notch extending in the second direction, the panel thickness of the hook 16 is increased by the weight of the ceiling panel 1 or the load of the adjacent ceiling panel 1 or the like. It is possible to reduce the load applied to the back surface side layer around the cut portion 14 when a load along the direction is applied.

In the present embodiment, the cut portion 14 is provided so as to penetrate the reinforcing layer 13 on the back surface 10a side of the panel main body 10. With such a configuration, the insertion piece portion 19 is arranged so as to sneak into the inner layer side of the reinforcing layer 13. That is, the sandwiched layer 13a including at least the reinforcing layer 13 is sandwiched between the insertion piece portion 19 and the base end side piece portion 18, and the fixing strength of the connecting member 15 to the second end portion 7 is more effective. Can be improved. That is, the fixing strength of the connecting member 15 can be improved as compared with the case where only the foamed resin layer and the mineral fiber layer are the sandwiched layers without providing such a reinforcing layer 13.
Further, in the present embodiment, the cut portions 14 and 14 are provided at two positions in parallel at intervals in the second direction. Further, the insertion piece portion 19 is inserted from one of the cut portions 14 and 14, and the tip portion 19b in the insertion direction is exposed on the back surface 10a side of the panel main body 10 via the other cut portion 14. It is said that it has a structure. With such a configuration, the load when the above load is applied to the hooking portion 16 is applied to the two cutting portions 14, 14 as compared with the one inserted into the one cutting portion 14. It can be distributed and burdened on the surrounding back surface side layer. Thereby, the fixing strength of the connecting member 15 with respect to the second end portion 7 can be improved more effectively.

Further, in the present embodiment, the base end side piece portion 18 is provided with an extension portion 18b extending inward in the first direction (first end portion 6 side) from the insertion piece portion 19. .. With such a configuration, a load as described above is applied to rotate the hooking portion 16 toward the field edge 2 with respect to the panel body 10, and the load is applied along the back surface 10a of the panel body 10. It can be received by the extension portion 18b. Thereby, the fixing strength of the connecting member 15 with respect to the second end portion 7 can be improved more effectively.
Further, in the present embodiment, the insertion piece portion 19 is provided separately from the base end side piece portion 18. With such a configuration, the sandwiched layer 13a is caught or twisted when the insertion piece 19 is inserted, as compared with the case where the insertion piece 19 is integrally provided on the base end side piece 18. It is possible to suppress such things as.

The base end side piece 18 has a plate shape in which the thickness direction of the panel main body 10 is aligned with the thickness direction. In the illustrated example, an example is shown in which the base end side piece 18 is substantially square when viewed in the thickness direction. Further, an example is shown in which both corners of the inner end portion in the first direction of the base end side piece 18 (extending portion 18b in the present embodiment) are curved when viewed in the thickness direction. There is.
The base end side piece 18 is provided with an insertion hole 18a into which the shaft portion of the fixing tool 4 is inserted.
Further, the dimension of the base end side piece 18 along the first direction is larger than the dimension of the insertion piece 19 along the first direction so that the extending portion 18b is formed inside the first direction. Has been done. The extending portion 18b is provided in a series from the inner portion in the first direction of the base end side piece portion 18. The thickness dimension of the base end side piece 18 may be an appropriate dimension from the viewpoint of strength, weight reduction, etc., and may be, for example, about 0.3 mm to 3 mm.

The hooking portion 16 is provided in a series at the outer end portion in the first direction of the base end side piece portion 18. As shown in FIGS. 1 (b) and 2 (b), the base end portion of the hook portion 16 is directed upward from the outer end portion in the first direction of the base end side piece portion 18 (field edge 2 side). A rising piece is provided so as to stand up, and the surface of the rising piece facing outward in the first direction constitutes the contact surface 16a. In the illustrated example, the rising piece portion is provided via the inclined piece portion extending diagonally upward from the outer end portion in the first direction of the base end side piece portion 18.
The extending portion 17 is provided so as to extend outward in the first direction from the upper end portion of the rising piece portion. The protrusion dimension of the extension portion 17 along the first direction from the end surface of the second end portion 7 of the panel body 10 is such that it can be easily hooked from the lower side with respect to the hooked portion 25 of the already constructed ceiling panel 1. In addition, the dimensions may be appropriate from the viewpoint of weight reduction.

Further, the extending portion 17 has a hook shape in which a folded piece 17a is provided at the tip portion thereof. The folded piece 17a is provided so that its tip faces inward in the first direction. In the illustrated example, an example is shown in which the tip of the folded piece 17a is provided so as to be located at the same height as the rising piece portion constituting the contact surface 16a. Further, in the figure example, an example in which the folded piece 17a is formed into a substantially semicircular arc shape (substantially C-shaped) when viewed in the second direction is shown, but it is substantially V-shaped having a single refracting portion. It may be a shape having a plurality of refracting parts, or the like. Further, the dimensions of the folded piece 17a along the first direction of the folded portion are appropriately set so that the folded piece 17a can be easily hooked from the lower side with respect to the hooked portion 25 of the already constructed ceiling panel 1 and from the viewpoint of weight reduction. It may be the size of.
The inclined piece portion, the rising piece portion, the extending portion 17, and the folded piece 17a of the hooking portion 16 have the same thickness as the base end side piece portion 18, and are formed in a series by pressing or bending as appropriate. It may be formed. Further, the width dimension of the hooking portion 16 along the second direction is the same as the width dimension of the base end side piece portion 18 along the second direction.

As shown in FIGS. 4A and 4B, the insertion piece portion 19 has a substantially plate shape in which the thickness direction of the panel main body 10 is aligned with the thickness direction. In the illustrated example, an example is shown in which the insertion piece portion 19 is substantially square when viewed in the thickness direction. Further, the tip portion 19b in the insertion direction of the insertion piece portion 19 is tapered toward the tip side when viewed in the thickness direction. With such a configuration, the insertion piece portion 19 can be easily inserted into the layer of the panel main body 10 via the notch portion 14. Further, an example is shown in which both corners of the tip portion 19b in the insertion direction are curved when viewed in the thickness direction.
Further, the insertion piece portion 19 is provided with a fastening hole 19a to which the shaft portion of the fixing tool 4 is fastened. The fastening hole 19a may be a female screw hole into which the shaft portion of the fastener 4 is screwed, or a pilot hole into which the shaft portion of the fastener 4 is screwed. The thickness dimension of the insertion piece portion 19 may be an appropriate dimension from the viewpoint of strength, weight reduction, etc., and may be, for example, about 0.5 mm to 3 mm.

Further, in the present embodiment, the insertion piece portion 19 is provided with the rising piece portions 19c and 19d that stand up toward the upper side (field edge 2 side) at the base end portion in the insertion direction. In the illustrated example, the rising pieces 19c and 19c that come into contact with one side of the base end side piece 18 are provided on both sides in the first direction, and an extending portion extending in the counter-insertion direction is provided between them. An example is shown in which a rising piece 19d rising from is provided. With such a configuration, the rising piece portion 19d can be gripped and the insertion piece portion 19 can be easily inserted into the layer of the panel main body 10 via the notch portion 14.
Further, the rising pieces 19c and 19c on both sides have dimensions along the insertion direction from the rising pieces 19c and 19c to the hole center of the fastening hole 19a in the same direction as the base end side piece 18. The dimensions are substantially the same as the dimensions along the same direction from the insertion hole 18a to the hole center. With such a configuration, if one side portion of the proximal end side piece 18 is brought into contact with the rising piece portions 19c and 19c and the proximal end side piece portion 18 is superposed on the insertion piece portion 19, The anchoring holes 19a and the insertion holes 18a can be aligned with each other in the second direction, and the alignment can be easily performed.

These rising piece portions 19c, 19c, 19d are provided in a series at the insertion direction base end portion of the insertion piece portion 19. Further, the rising dimensions of these rising pieces 19c, 19c, 19d along the panel thickness direction may be provided in the middle part of the ceiling panel 1 in the second direction for mounting or reinforcing equipment or the like. The dimensions may be appropriate so as not to interfere with the base. In the illustrated example, an example is shown in which the rising end portions 19c, 19c, 19d of these rising pieces 19c, 19c, 19d have substantially the same height as the contact surface 9a abutting on the field edge 2 of the magnet 9.
Further, the dimensions of the insertion piece portion 19 along the insertion direction (second direction) from the rising piece portion 19c are such that the tip portion 19b in the insertion direction is exposed on the back surface 10a side of the panel body 10. It is made larger than the dimension along the second direction of the end side piece 18. Further, the dimension along the second direction between the two cut portions 14 and 14 formed in the panel main body 10 is smaller than the dimension along the second direction of the insertion piece portion 19. Further, the dimensions of the two cut portions 14 and 14 along the first direction are larger than the dimensions of the insertion piece portion 19 along the first direction. The dimensions of the two cut portions 14 and 14 along the first direction may be slightly larger than the dimensions of the insertion piece portion 19 along the first direction.
The insertion piece portion 19 may be formed in a series by pressing, bending, or the like as appropriate. Further, the hooking portion 16 including the insertion piece portion 19 and the base end side piece portion 18 may be formed of an appropriate metal-based material.

The connecting member 15 having the above configuration may be fixed to the second end portion 7 of the panel main body 10 as follows.
First, the insertion piece 19 is inserted into the layer of the panel body 10 via one of the two cuts 14 and 14 formed in the second end 7 of the panel body 10. .. These two notches 14, 14 may be formed by an appropriate cutter or the like so as to penetrate at least the reinforcing layer 13. Further, the tip portion 19b in the insertion direction of the insertion piece portion 19 is exposed to the back surface 10a side of the panel main body 10 via the other cut portion 14, and the insertion piece portion 19 is exposed to the second end portion 7 of the panel main body 10. Attach to. At this time, the insertion piece portion 19 may be attached by compressing and deforming the base material 11 of the panel body 10 (see FIG. 4B). In this state, the sandwiched layer 13a including the reinforcing layer 13 between the two cut portions 14 and 14 is arranged on the upper side of the insertion piece portion 19. The sandwiched layer 13a may contain a part of the base material 11.

Then, the base end side piece 18 is overlapped on the sandwiched layer 13a so that the insertion hole 18a matches the fastening hole 19a of the insertion piece 19, and the hooking portion 16 is moved outward in the first direction. The positions of the insertion piece portion 19 and the base end side piece portion 18 are adjusted so that the protruding dimension becomes a predetermined dimension. Next, the fixing tool 4 is fastened to the fastening hole 19a of the insertion piece 19 through the insertion hole 18a of the base end side piece 18. As a result, the shaft portion of the fixing tool 4 penetrates the sandwiched layer 13a sandwiched between the base end side piece portion 18 and the insertion piece portion 19, and the insertion piece portion 19 and the base end side piece portion 18 are formed. It is fixed to the second end portion 7. In the illustrated example, the shaft portion of the fixing tool 4 is provided so as to exceed the central portion in the thickness direction of the base material 11, but the present invention is not limited to this mode. Further, the insertion piece portion 19 is not limited to the above-described embodiment, and is one of the rising piece portions 19c, 19c, 19d and the front end portion 19b in the insertion direction exposed on the back surface 10a as described above. A configuration in which both are not provided may be used. Further, the base end side piece 18 is not limited to the above-described embodiment, and may be configured without the above-mentioned extending portion 18b.

Further, as shown in FIG. 1A, in the present embodiment, a plurality of (three in the example) connecting members 15, 15 and 15 are provided at the second end portion 7 at intervals in the second direction. It has a structure. These connecting members 15, 15 and 15 have the same configuration as each other. Further, these plurality of connecting members 15, 15 and 15 are provided at substantially equal intervals from each other. With such a configuration, it is possible to effectively suppress the sagging of the second end portion 7 in the middle portion in the second direction. It should be noted that the plurality of connecting members 15, 15 and 15 may not be provided at substantially equal intervals from each other.
Further, the dimensions along the second direction from the end faces of the held ends 8 and 8 on both sides of the second direction to the outermost connecting members 15 and 15 in the second direction are the dimensions between the connecting members 15 and 15 adjacent to each other. An example with almost the same dimensions is shown. It should be noted that these connecting members 15, 15 and 15 may be configured not to be provided at the second end portion 7 near the wall of the ceiling panel 1 arranged near the wall.

Further, as the connecting member 15, instead of the above-described aspect, the connecting member 15A provided in the ceiling panel 1A according to the modified example as shown in FIG. 4C may be used. In the following modified examples, the differences from the above examples will be mainly described, and the same configurations will be designated by the same reference numerals, and the description thereof will be omitted or briefly described. In addition, the description of the action and effect and the mounting procedure similar to the above example will be omitted or briefly described.
The connecting member 15A according to the present modification has a configuration in which the insertion piece portion 19A is bent from one side portion in the second direction of the base end side piece portion 18A and integrally provided with the connecting member 15A. With such a configuration, the handleability is improved as compared with the case where the insertion piece portion 19 is provided separately from the connecting member 15 (base end side piece portion 18) as in the above example. Can be done. Further, when the insertion hole 19a and the insertion hole 18a as described above are provided in the insertion piece 19A and the base end side piece 18A, the alignment of these holes becomes unnecessary and the mountability can be improved. it can.

That is, the insertion piece portion 19A is provided in a series on one side portion in the second direction of the base end side piece portion 18A. The gaps between the base end side piece 18A and the insertion piece 19A along the thickness direction are appropriately sized so that the sandwiched layer 13a can be received. In addition, an appropriate inclined guide surface or the like for facilitating the reception of the sandwiched layer 13a may be provided on the other side of the base end side piece 18A in the second direction.
Further, in the following, the first end 6 side of the ceiling panel 1 provided with the connecting member 15 and the construction procedure will be described, but the first end 6 of the ceiling panel 1A provided with the connecting member 15A according to the modified example will be described. The same applies to the side and construction procedure.
Further, the connecting members 15 and 15A are not limited to those fixed to the second end portion 7 via the insertion piece portions 19 and 19A as described above. Further, as in the reinforcing member 20 described later, the connecting members 15 and 15A may be provided over substantially the entire first direction of the second end portion 7. That is, the hooking portion 16 may be provided on the reinforcing member provided over substantially the entire first direction of the second end portion 7. The connecting members 15, 15A and the hooking portion 16 provided on the second end portion 7 of the panel main body 10 can be variously deformed.

In the present embodiment, as shown in FIG. 2B, the reinforcing member 20 projects from the back surface 10a side of the first end portion 6 of the panel body 10 toward the outside in the first direction, and is fixed to the field edge 2. A fixed piece portion 23 on which a ceiling panel 1 adjacent to the first direction is arranged is provided on the lower side. With such a configuration, the fixing tool 3 is fastened from the indoor side (lower side) toward the field edge 2 via the fixing piece portion 23 protruding from the first end portion 6 toward the outside in the first direction. The ceiling panel 1 can be fixed to the field edge 2 (see FIG. 5B). Further, the second end of the ceiling panel 1 adjacent to the hooked portion 25 of the first end portion 6 of the ceiling panel 1 fixed to the field edge 2 via the fixed piece portion 23 in the first direction. The hooking portion 16 of the portion 7 can be hooked. Further, since the fixed piece portion 23 is configured to project outward from the back surface 10 side of the panel main body 10 in the first direction, the ceiling panel 1 is connected to the ceiling panel 1 adjacent to the first direction. The fixing tool 3 can be made inconspicuous from the surface side.

Further, in the present embodiment, the contact surface 23a in contact with the field edge 2 of the fixed piece portion 23 and the contact surface 9a in contact with the field edge 2 of the magnet 9 are made flush with each other. With such a configuration, the contact surfaces 9a and 23a can be stably brought into contact with the field edge 2 while reducing the need for the magnets 9 to be embedded. The abutting surface 23a of the fixed piece portion 23 and the abutting surface 9a of the magnet 9 are not limited to those having a completely coplanar shape, and the deviation in the panel thickness direction is, for example, about 2 mm. Including those that have.
Further, in the present embodiment, the fixed piece portion 23 has the fixed piece portion 23 placed between the fixed piece portion 23 and the back surface 10a of the ceiling panel 1 adjacent to the ceiling panel 1 arranged on the lower side of the fixed piece portion 23 in the first direction. It is provided so as to form a gap larger than the dimension along the axial direction of the head portion 3a of the fixing tool 3 to be fixed to 2. With such a configuration, it is possible to suppress interference between the back surface 10a of the ceiling panel 1 adjacent in the first direction and the head portion 3a of the fixing tool 3 for fixing the fixing piece portion 23 to the field edge 2. It is possible to make it difficult for a step on the surface of the ceiling panels 1, 1 adjacent to each other in the first direction to occur.

Further, in the present embodiment, as shown in FIG. 1, the fixed piece portion 23 and the hooked portion 25 are substantially covered in the second direction along the back surface 10a of the first end portion 6 of the panel main body 10. The reinforcing member 20 is provided on the fixed reinforcing member 20. With such a configuration, the reinforcing member 20 can be made less noticeable from the surface side as compared with the one provided on the surface side. Further, with such a configuration, it is possible to reduce the need to provide the field edge at a relatively small pitch in the second direction as in the conventional case, and the joiner or the like is not exposed on the surface side. Also, it is possible to suppress the sagging of the central portion of the ceiling panel 1 in the second direction. That is, while reducing the weight of the entire ceiling structure including the field edge 2, the holding strength of the ceiling panel 1 can be improved, sagging can be suppressed, and the appearance on the surface side can be improved.

The reinforcing member 20 has a long shape in the second direction of the panel main body 10, and is provided on the base portion 21 along the back surface 10a of the first end portion 6 and the reinforcing member 20 on the panel. It includes a mounting portion 22 to be attached to the main body 10.
The base portion 21 is provided over substantially the entire second direction of the panel main body 10, and has a plate shape in which the thickness direction is aligned with the thickness direction of the panel main body 10. In the present embodiment, the base portion 21 is provided over the entire second direction of the panel main body 10. The reinforcing member 20 provided over the entire second direction of the panel main body 10 may have a length of 7/10 or more of the dimension along the second direction of the panel main body 10.
Further, the width dimension and the thickness dimension along the first direction of the base portion 21 may be appropriate dimensions from the viewpoint of strength, weight reduction, and the like. In the illustrated example, an example is shown in which the base portion 21 is provided with a plurality of elongated holes having a major axis in the second direction at intervals in the second direction. Further, the portion of the base portion 21 that protrudes from the end surface of the first end portion 6 on the outside in the first direction from the portion provided with the elongated hole is a gap formed between the ceiling panels 1 and 1 adjacent to the first direction. It is configured to partition the bottom side of the.

Further, in the present embodiment, as shown in FIG. 3B, the base portion 21 is provided with a first contact piece portion 21a that is brought into contact with the end surface of one of the held end portions 8 of the panel body 10. A second contact piece portion 21b that comes into contact with the end surface of the first end portion 6 is provided. With such a configuration, the mounting position of the reinforcing member 20 can be easily aligned with the panel body 10.
The first contact piece portion 21a and the second contact piece portion 21b are provided so as to project downward from the first end portion in the longitudinal direction of the base portion 21. Further, in the illustrated example, the first contact piece portion 21a and the second contact piece portion 21b are aligned with the protruding corners of the end surface of one of the held end portions 8 and the end surface of the first end portion 6. An example is shown in which they are provided in a series and orthogonal to each other. In addition, one or both of the first contact piece portion 21a and the second contact piece portion 21b may be provided at the second end portion in the longitudinal direction of the base portion 21.

Further, in the present embodiment, the first end portion of the base portion 21 in the longitudinal direction is brought into contact with the end surface of the held end portion 8 of the panel body 10 of the ceiling panel 1 adjacent to the second direction. The contact piece portion 21c is provided. The third contact piece portion 21c has a panel main body 10 so that a similar watermark-like gap is formed between the end faces of the ceiling panels 1 and 1 adjacent in the second direction facing in the second direction. It is provided so as to protrude from the end surface of the held end portion 8. With such a configuration, the gaps between the ceiling panels 1 and 1 can be easily equalized. In the illustrated example, the third contact piece portion 21c is provided in a series on the first contact piece portion 21a via a protruding piece portion protruding outward in the second direction from the first contact piece portion 21a. An example is shown. The lower surface of the field edge 2 is arranged on the bottom side of the gap formed between the ceiling panels 1 and 1 adjacent to each other in the second direction, and the bottom side of the gap is partitioned.

The mounting portion 22 is provided in a series so as to extend from the inner side portion in the first direction of the base portion 21 toward the inner side in the first direction, and is formed as a single portion having the same thickness as the base portion 21. In the present embodiment, a plurality of (three in the example) mounting portions 22, 22, 22 are provided at intervals in the longitudinal direction of the base portion 21. Further, the mounting portions 22 and 22 are provided so as to be located in the vicinity of the held ends 8 and 8 on both sides of the panel main body 10 in the second direction. Further, the other mounting portions 22 are provided between the mounting portions 22 and 22 on both sides of the second direction at substantially equal intervals from each other.
Further, as shown in FIGS. 3 (b) and 3 (c), the shaft portion of the fixing tool 5 (see FIG. 3 (a)) for fixing these to the panel main body 10 is inserted into the mounting portions 22, 22 and 22. The structure is such that the insertion hole 22a is provided. Further, as shown in FIG. 3A, the mounting pieces 22, 22, 22 are provided with the same insertion piece portion 30 on the inner layer side of the panel body 10. Although not shown, the insertion piece portion 30 is provided with a fastening hole similar to the above. Further, the insertion piece portion 30 is provided with the insertion direction tip portion 30a and the rising piece portions 30b, 30b, 30c as described above. The mode of fixing the reinforcing member 20 to the panel main body 10 is not limited to such a configuration, and various other modifications are possible.

As shown in FIG. 1, the fixed piece portion 23 is provided over substantially the entire second direction of the panel main body 10, and has a plate shape in which the thickness direction is aligned with the thickness direction of the panel main body 10. .. The fixed piece portion 23 is provided in a series on the base portion 21 via a rising piece portion provided so as to rise upward from the outer end portion in the first direction of the base portion 21. The rising dimension of the rising piece portion is appropriately set so that the contact surface 23a facing upward of the fixed piece portion 23 is flush with the contact surface 9a of the magnet 9 as described above. There is. Further, the rising dimension of the rising piece portion is the dimension along the panel thickness direction from the downward side surface of the fixed piece portion 23 to the back surface 10a of the panel main body 10 in the axial direction of the head 3a of the fixing tool 3. The dimensions are set appropriately so that the dimensions are equal to or greater than the dimensions along.

The width dimension and the thickness dimension along the first direction of the fixed piece portion 23 may be appropriate dimensions from the viewpoint of strength, weight reduction, and the like. In the illustrated example, the fixed piece portion 23 is provided with a plurality of long holes having a major axis shape in the second direction at intervals in the second direction, which is substantially the same as the base portion 21.
Further, as shown in FIGS. 3 (b) and 3 (c), insertion holes through which the shaft portions of the fasteners 3 anchored to the field edges 2 and 2 are inserted into both ends in the longitudinal direction of the fixed piece portions 23. The configuration is such that 23b and 23b are provided. Further, these insertion holes 23b and 23b are elongated holes having a major axis in the second direction. In the ceiling panel 1, each end of the reinforcing member 20 (fixing piece 23) in the longitudinal direction is fixed to the field edges 2 and 2 by the fasteners 3 and 3, and the first end 6 is fixed to the field edges 2 and 2. On the other hand, it is fixedly held.
Further, in the present embodiment, as shown in FIG. 3C, the fixed piece portion 23 faces the second end portion in the longitudinal direction of the fixed piece portion 23 in the second direction of the second end portion in the longitudinal direction. A contact piece portion 23c that comes into contact with the end surface of the held end portion 8 of the ceiling panel 1 is provided. With such a configuration, the gaps between the ceiling panels 1 and 1 can be easily equalized. In the illustrated example, the second end portion of the fixed piece portion 23 in the longitudinal direction is projected outward in the second direction, and the abutting pieces are paired so as to hang downward from both sides of the protruding portion in the first direction. The structure is provided with portions 23c and 23c.

As shown in FIGS. 1 (b) and 6 (b), the hooked portion 25 is provided on the outside of the fixed piece portion 23 in the first direction.
In the present embodiment, the hooked portion 25 has a plate shape along the thickness direction in the first direction, and includes a hooked piece 26 on which the folded piece 17a of the hooked portion 16 is hooked. Further, the hooked portion 25 is provided so as to be located outside the hooked piece 26 in the first direction and parallel to the hooked piece 26, and is provided with an insertion hole 29 through which the folded piece 17a is inserted. It is provided with a retaining piece 28. With such a configuration, the folded piece 17a is in a state of being hooked and held by the hooked piece 26 and inserted into the insertion hole 29 of the retaining piece portion 28. As a result, even when an impact is applied from the lower side to the unconstructed ceiling panel 1 in which the folded piece 17a is held by the hooked portion 25 of the already constructed ceiling panel 1 as described above. It becomes difficult to release the hook holding state, and it is possible to prevent the unconstructed ceiling panel 1 from being unintentionally dropped.

The hooked piece 26 is provided so as to project upward from the outer end portion of the fixed piece portion 23 in the first direction. The surface of the hooked piece 26 facing outward in the first direction constitutes the contacted surface 26a that is in contact with the contact surface 16a of the hooking portion 16.
The dimension of the hooked piece 26 along the second direction is larger than the dimension of the hooking portion 16 along the second direction. Further, the protruding dimension of the hooked piece 26 is set to an appropriate size so that the folded piece 17a of the hooking portion 16 can be hooked and held. Further, in the present embodiment, as shown in FIG. 3A, the hooked piece 26 is provided in a raised shape from the fixed piece portion 23. Further, the hooked piece 26 is arranged at a plurality of places (three places in the figure) at intervals in the second direction along the first end portion 6 of the panel main body 10 so as to be positioned according to the hooked portion 16. ).

Further, in the present embodiment, as shown in FIG. 6B, the fixed piece portion 23 is provided with a guide inclined piece portion 24 that serves as a guide for the folded piece 17a. The guide inclined piece portion 24 is a folded piece 17a that moves in the same direction when the ceiling panel 1 held by the hooked piece 26 is moved closer to the first direction with respect to the ceiling panel 1 provided with the guide inclined piece portion 24. Acts as a guide for. The guide inclined piece portion 24 is provided in a raised shape from a portion of the fixed piece portion 23 in the middle in the first direction toward the lower side opposite to the hooked piece 26. Further, the guide inclined piece portion 24 is inclined downward in a downward gradient toward the outside in the first direction. With such a configuration, although the hooked piece 26 is provided in a cut-and-raised shape, the folded piece 17a is less likely to be caught in the hole edge of the fixed piece portion 23 formed by the cut-out piece 26, and the folded piece 17a is guided. It can be smoothly guided inward in the first direction along the inclined piece portion 24. The guide inclined piece portion 24 is provided at a position corresponding to the hooked piece 26. That is, the guide inclined piece portions 24 are provided at a plurality of locations (three locations in the illustrated example) at intervals in the second direction along the first end portion 6 of the panel main body 10.

The retaining piece portion 28 is an extension piece portion extending outward in the first direction from the lower end portion of the hanging piece portion provided so as to hang downward from the outer end portion in the first direction of the fixed piece portion 23. It is provided so as to stand up from the tip of 27 toward the upper side. The hanging piece portion, the extending piece portion 27, and the retaining piece portion 28 are provided over substantially the entire second direction of the panel main body 10. With such a configuration, the rigidity of the reinforcing member 20 can be improved while reducing the thickness and weight. In the illustrated example, the hanging piece portion, the extending piece portion 27, and the retaining piece portion 28 are not provided at both ends in the longitudinal direction of the fixed piece portion 23 provided over the entire second direction of the panel body 10. An example of the configuration is shown (see FIG. 1 (a)).
The extending piece portion 27 has a plate shape in which the thickness direction is aligned with the thickness direction of the panel main body 10. The width dimension of the extending piece portion 27 along the first direction may be an appropriate dimension so that the folded piece 17a can be easily inserted through the insertion hole 29 described later, and from the viewpoint of weight reduction. Further, the extending piece portion 27 is provided so as not to substantially interfere with the panel main body 10 of the ceiling panel 1 adjacent to the first direction. In the illustrated example, an example is shown in which the surface of the extending piece portion 27 facing downward is provided so as to be substantially flush with the back surface 10a of the panel main body 10. That is, the surface of the extending piece portion 27 facing downward is substantially flush with the surface of the base portion 21 facing the panel body 10.

The dimension of the retaining piece portion 28 along the vertical direction from the fixed piece portion 23 is larger than the protruding dimension of the hooked piece 26 so that the upper end is located above the upper end of the hooked piece 26. .. Further, in the illustrated example, an example is shown in which the retaining piece portion 28 is provided with a plurality of long holes having a major axis shape in the second direction at intervals in the second direction, which is substantially the same as the base portion 21 and the fixed piece portion 23. (See FIG. 3 (a)). With such a configuration, when a base is provided in the middle part of the ceiling panel 1 in the second direction for mounting or reinforcing equipment or the like as described above, the retaining piece portion 28 that interferes with this base The site can be easily excised.
As shown in FIGS. 3 (a) and 5 (b), the insertion hole 29 is provided over the retaining piece portion 28 and the extending piece portion 27. That is, the insertion holes 29 are provided in a series so as to penetrate the outer portion of the extending piece portion 27 in the first direction and the lower portion of the retaining piece portion 28. The insertion holes 29 are provided at a plurality of locations (three locations in the figure) at intervals in the second direction along the first end portion 6 of the panel main body 10 so as to be positioned corresponding to the hooked piece 26. It is provided.

The dimension of the insertion hole 29 along the second direction is larger than the dimension of the extension portion 17 of the hooking portion 16 and the folded piece 17a along the second direction.
Further, the dimensions of the insertion hole 29 along the vertical direction may be appropriately set so as not to interfere with the hooking portion 16 of the ceiling panel 1 adjacent to the first direction. In the illustrated example, an example is shown in which the insertion hole 29 is provided so that the upper end opening edge portion facing the lower side of the insertion hole 29 is located above the upper surface of the hooking portion 16.
Further, the dimension of the insertion hole 29 along the first direction may be an appropriate dimension from the viewpoint of the insertability of the folded piece 17a and the like. In the illustrated example, an example in which the insertion hole 29 is provided over most of the extending piece portion 27 in the first direction is shown. It should be noted that the configuration may be such that the retaining piece portion 28 and the insertion hole 29 are not provided.
The reinforcing member 20 having the above structure may be formed in a series from an appropriate metal-based material by pressing, bending, or the like. Further, the reinforcing member 20 may not be provided at the first end 6 near the wall of the ceiling panel 1 arranged near the wall.

Next, an example of the construction procedure of the ceiling panel 1 having the above configuration will be described.
As shown in FIGS. 5A and 5B, in the already constructed ceiling panel 1, the held ends 8 and 8 on both sides in the second direction are provided at intervals in the second direction. It is held by 2, and the first end portion 6 is fixed to the field edges 2 and 2 by the fixing tool 3 via the fixing piece portion 23. The second end portion 7 of the already constructed ceiling panel 1 may be fixed to an appropriate wall-side base, or may be fixed to a fixing target in various fixing modes.

With respect to the first end portion 6 of the ceiling panel 1 constructed as described above, the unconstructed ceiling panel 1 held substantially vertically or diagonally with the second end portion 7 as the upper side is moved from the lower side. .. Then, as shown in FIGS. 6A and 6B, the hooking portion 16 of the unconstructed ceiling panel 1 is inserted into the insertion hole 29 of the already constructed ceiling panel 1, and the folded piece 17a thereof is inserted into the already constructed ceiling. It is hooked on the hooked piece 26 of the panel 1. With such a configuration, although it depends on the ceiling height, the second end 7 of the unconstructed ceiling panel 1 has already been constructed in a state of standing on the floor without requiring work at a high place using a stepladder or the like. It is also possible to hold the ceiling panel 1 at the first end portion 6 of the ceiling panel 1.
Then, as shown by the alternate long and short dash line in FIG. 6B, the unconstructed ceiling panel 1 is rotated until it becomes substantially horizontal with the folded piece 17a as a fulcrum so as to raise the first end 6 side thereof. Let me. Next, the unconstructed ceiling panel 1 is moved so as to be pushed closer to the existing ceiling panel 1 in the first direction, and the contact surface 16a of the unconstructed ceiling panel 1 is moved to the already constructed ceiling panel 1. (See FIG. 2B).

Further, when the already constructed ceiling panel 1 is arranged in the second direction, the end surface of the held end portion 8 on the second end portion 7 side of the unconstructed ceiling panel 1 is already opposed to this. It is brought into contact with the contact piece 23c of the ceiling panel 1 of the construction. Further, the third contact piece portion 21c of the first end portion 6 of the unconstructed ceiling panel 1 is brought into contact with the end surface of the held end portion 8 of the already constructed ceiling panel 1 facing the third contact piece portion 21c.
Further, the magnets 9 and 9 of the held ends 8 and 8 on both sides in the second direction of the unconstructed ceiling panel 1 are attracted to the field edges 2 and 2. In addition, with the magnets 9 and 9 of the held end portions 8 and 8 attracted to the field edges 2 and 2, the unconstructed ceiling panel 1 is aligned in the first direction and the second direction. You may.
Then, the fixing piece portion 23 of the first end portion 6 of the unconstructed ceiling panel 1 is fixed to the field edges 2 and 2 by the fixing tool 3. Hereinafter, in the same manner, a plurality of ceiling panels 1 may be sequentially installed so as to be adjacent to each other in the vertical and horizontal directions. The above-mentioned construction procedure is only an example, and various modifications are possible.

Further, in the ceiling structure according to the present embodiment constructed as described above, the field edges 2 and 2 which are elongated in the first direction and are arranged at intervals in the second direction extend in the second direction. The structure is long and supported by the field edge receivers 2A and 2A arranged at intervals in the first direction. Further, the ceiling structure has a structure in which a plurality of ceiling panels 1 and 1 are adjacent to each other in the first direction and fixed to the field edges 2 and 2 arranged at intervals in the second direction. .. Further, in the same ceiling structure, the mass per 1 m ^{2 of the} ceiling structure including the ceiling panel 1, the field edge 2 and the field edge receiver 2A is 2 kg or less. With such a configuration, the weight of the entire ceiling system can be reduced, and the damage caused when the ceiling system is dropped can be reduced. The ceiling structure having a mass of 2 kg or less per 1 m ² includes the above-mentioned clips, field edge joints, and field edge receiving joints, and does not include hangers, hanging bolts, and nuts. The mass per 1 m ^{2 of the} base including these clips, the field edge joint, the field edge receiving joint, the field edge 2 and the field edge receiving 2A 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.

The mass per 1 m ^{2 of} the ceiling structure increases or decreases depending on the size (length of one side) of the ceiling panel 1 (panel body 10), the type and type of the field edge 2, the pitch, and the like.
Hereinafter, an example of the ceiling structure will be described with reference to Table 1.
In each of the following examples, the ceiling panel 1 has the same configuration as the above-mentioned example except for the size (length of one side) of the panel main body 10. That is, the panel main body 10 has a structure in which the surface layer 12, the reinforcing layer 13, and the end face layer are provided on the base material 11 made of the foamed resin layer. The panel body 10 had a thickness of 4 mm and a mass of 0.55 kg per 1 m ² . Further, a reinforcing member 20 is provided at the first end portion 6 of the panel main body 10, a connecting member 15 is provided at the second end portion 7, and a magnet 9 is provided at the held ends 8 and 8.

In the first to fourth examples, the ninth to twelfth examples, and the 21st to 24th examples, the dimensions of the panel body 10 along the first and second directions are set to 906 mm, and 1 m ^{2 of the} ceiling panel 1. The mass per hit was 0.70 kg.
In the fifth to eighth examples, the dimensions of the panel main body 10 along the first direction and the second direction were 451 mm, and the mass of the ceiling panel 1 per 1 m ² was 0.85 kg.
In the 13th to 16th examples, the dimensions of the panel main body 10 along the first direction and the second direction were 602 mm, and the mass of the ceiling panel 1 per 1 m ² was 0.78 kg.
In the 17th to 20th examples and the 25th to 28th examples, the dimensions of the panel body 10 along the first and second directions are 1208 mm, and the mass of the ceiling panel 1 per 1 m ² is 0.66 kg. there were.

Further, in each example, four different types of field edges 2 are used, and the parts corresponding to the held ends 8 and 8 of the ceiling panel 1 are used according to the size of the ceiling panel 1 and the arrangement pitch of the field edges 2. In the case where the double field edge 2 is arranged and arranged between them, an example of arranging the single field edge 2 is used. Further, in each case, the double field edge 2 has a width of 50 mm, and the single field edge 2 has a width of 25 mm. Further, both the JIS 19 type field edge 2 and the general 19 type field edge 2 have a height of 19 mm, and the JIS 25 type field edge 2 and the general 25 type field edge 2 both have a height of 25 mm. is there.
In the 1st, 5th, 9th, 13th, 17th, 21st, and 25th cases, the field edge 2 was a JIS19 type having a thickness of 0.5 mm.
In the 2nd, 6th, 10th, 14th, 18th, 22nd, and 26th cases, the field edge 2 was a general 19 type having a thickness of 0.4 mm.
In the 3rd, 7th, 11th, 15th, 19th, 23rd, and 27th cases, the field edge 2 was a JIS25 type having a thickness of 0.5 mm.
In the 4th, 8th, 12th, 16th, 20th, 24th, and 28th cases, the field edge 2 was a general 25 type having a thickness of 0.4 mm.

In the first to fourth examples, the double field edges 2 and 2 on both sides in the second direction and the two single field edges 2 and 2 between them are arranged at a pitch of 303 mm.
In the fifth to eighth examples, the double field edges 2 and 2 on both sides in the second direction are arranged at a pitch of 455 mm.
In the 9th to 12th examples, the double field edges 2 and 2 on both sides in the second direction and the single field edge 2 between them are arranged at a pitch of 455 mm.
In the thirteenth to sixteenth examples, the double field edges 2 and 2 on both sides in the second direction are arranged at a pitch of 606 mm.
In the 17th to 20th examples, the double field edges 2 and 2 on both sides in the second direction and the single field edge 2 between them are arranged at a pitch of 606 mm.
In the 21st to 24th examples, the double field edges 2 and 2 on both sides in the second direction are arranged at a pitch of 909 mm.
In the 25th to 28th examples, the double field edges 2 and 2 on both sides in the second direction are arranged at a pitch of 1212 mm.

Further, in each example, the field edge receivers 2A are arranged at a pitch of 909 mm in the first direction. Further, in each case, the field edge receiver 2A has a height of 38 mm and a width of 12 mm, but the thickness is a thickness according to the type of the field edge 2. The field edge 2A having a field edge 2 of JIS19 type has a thickness of 1.2 mm, and the field edge 2A having a field edge 2 of JIS25 type has a thickness of 1.6 mm, and the field edge 2 has a general 19 type. The field edge receiver 2A, which is a general 25 type, has a thickness of 1.0 mm.
The base mass and the mass of the ceiling structure (ceiling mass) of each example are as shown in Table 1 below. The base mass is the mass per 1 m ² including the clip, the field edge joint, and the field edge receiving joint in addition to the field edge 2 and the field edge receiving 2A.

As shown in Table 1, the ceiling mass is 2 kg / m ² or less in the 10th, 14th, 17th, 18th, 21st, 22nd, and 24th to 28th cases. , Good results. Further, it was shown that the weight of the ceiling panel 1 can be reduced because the mass ratio of the accessory parts (reinforcing member 20, connecting member 15, magnet 9) to the panel main body 10 decreases as the panel size increases. Further, it was shown that the weight of the field edge 2 can be reduced as the pitch becomes larger, and the weight can be reduced as the height and thickness become smaller.

In the above-described embodiment, a watermark-like gap is formed between the ceiling panels 1 and 1 adjacent to the first direction and between the ceiling panels 1 and 1 adjacent to the second direction. Although an example is shown, a configuration in which no gap is formed in one or both of these may be used. That is, the end faces of the adjacent ceiling panels 1 and 1 may be brought into contact with each other. In this case, the positions of the contact surface 16a, the contact surface 26a, the contact piece portion 23c, the third contact piece portion 21c, and the like may be appropriately deformed, and further, such The configuration may be such that the positioning portion is not provided.
Further, in the above embodiment, an example in which the reinforcing member 20 is provided with the fixed piece portion 23 projecting outward in the first direction is shown, but the present invention is not limited to such an embodiment, and for example, it penetrates the panel body 10. The fixing tool 3 may be fixed in this manner, and various other modifications are possible.
Further, in the above embodiment, an example in which the reinforcing member 20 is provided along the back surface 10a of the panel main body 10 is shown, but the reinforcing member 20 is provided in the panel main body 10 in an embedded shape or is provided along the front surface. It may be a mode or the like, and various other modifications are possible.

Further, in the above embodiment, an example is shown in which the hooked portion 25 has a hooked piece 26 projecting in the thickness direction of the panel main body 10, but the hooking portion is not limited to such a configuration. It may be in the shape of a locking hole into which the 16 is inserted. As the hooked portion 25 on which the hooked portion 16 is hooked, various other modifications are possible.
Further, in the above embodiment, an example in which the folding piece 17a is provided on the hooking portion 16 is shown, but an L-shaped or insertion piece-shaped hooking portion 16 without such a folding piece 17a may be used. The hooking portion 16 can be modified in various ways. In this case, the hooked portion 25 may be deformed as needed. The configuration of each part of the ceiling panels 1 and 1A according to the above embodiment is not limited to the above-described embodiment, and various other modifications are possible.

1,1A Ceiling panel 6 1st end (1st end in 1st direction)
7 Second end (second end in the first direction)
10 Panel body 10a Back side 16 Hooking part 20 Reinforcing member (reinforcing part)
23 Fixed piece 2 Field edge 2A Field edge receiver 3 Fixing tool 3a Head

Claims (4)

1. A ceiling panel that is elongated in the first direction and is fixed to a field edge that is arranged in parallel with a space in the second direction orthogonal to the first direction.
   A reinforcing portion provided on a square flat plate-shaped panel body and a first end portion in the first direction of the panel body so as to extend in the second direction, and both end portions in the second direction are fixed to the field edge by a fixing tool. The ceiling panel is provided with a hooking portion provided at the second end portion of the panel main body in the first direction and hooked on the reinforcing portion of the ceiling panel adjacent to the first direction.
2. In claim 1,
   The reinforcing portion includes a ceiling panel that protrudes from the back surface side of the first end portion of the panel body in the first direction toward the outside in the first direction, is fixed to the field edge, and is adjacent to the lower side in the first direction. A ceiling panel characterized by being provided with fixed pieces to be arranged.
3. In claim 2,
   The fixed piece portion has a gap equal to or larger than the axial direction of the head of the fixing tool for fixing the fixed piece portion to the field edge between the fixed piece portion and the back surface of the ceiling panel arranged on the lower side of the fixed piece portion. A ceiling panel characterized in that it is provided so as to form.
4. A long shape extending in the first direction and parallel to the second direction orthogonal to the first direction. Steel field edges extending in the second direction are long and spaced in the first direction. The field edge is supported by steel field edges arranged in parallel with each other and arranged at intervals in the second direction, according to any one of claims 1 to 3. A plurality of ceiling panels are adjacent to each other in the first direction and fixed, and the weight of the ceiling structure including the ceiling panel, the field edge and the field edge receiver is 2 kg or less per 1 m ^2. Ceiling structure.

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