JP2015140629A - Construction method of suspended ceiling and suspended ceiling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide construction method of suspended ceiling and suspended ceiling capable of improving aseismatic performance.SOLUTION: The method comprises: a fixing step in which a plurality of panel materials 31 are preserved, in which a fixation base 50 and a first engaging part 52 at bottom thereof are formed in an extending manner in a longitudinal direction on one edge part 48 at one side in a width direction and second engaging part 59 is formed in the extending manner in the longitudinal direction on the other edge part 58 at the other side in the width direction, and the fixation base 50 of a former panel material 31(A) is fixed on a suspended ceiling base; and an engagement step in which a second engaging part 59 of a later panel material 31 (B) is engaged on the first engaging part 52 of the former panel material 31. The steps are mutually performed so as to align the plurality of panel materials 31 on the suspended ceiling base to form a ceiling panel. Between the fixing step and the engagement step, application step is performed, in which adhesive agent S for attaching the one end part 48 of the former panel material 31(A) or the other end of the later panel material 31 (B) is applied on them.

Description

  The present invention relates to a method for constructing a suspended ceiling and a suspended ceiling.

  As the suspended ceiling, for example, a plurality of suspension bolts provided with hangers at the tip are suspended from a building frame such as a floor slab or a beam, and the plurality of field receivers are supported in parallel by the hangers of these suspension bolts. There is a structure in which a plurality of field edges are supported by clips so as to be orthogonal to the edge supports, and a ceiling panel is attached to these field edges. In such suspended ceilings, for the purpose of seismic reinforcement, the brace of the diagonal reinforcing material is attached between the field edge receiver and the suspension bolt to reduce the shaking in the orientation direction of the field edge receiver, and the adjacent field A seismic reinforcement structure that suspends the additional field edge receiver between the edge supports and attaches a brace of diagonal reinforcement between the additional field edge receiver and the suspension bolt to reduce the shaking in the orientation direction of the field edge. Yes (see, for example, Patent Document 1).

  Moreover, as a ceiling panel, for example, one end edge of a panel material is fixed to the ground, and the next panel material is engaged with this one end edge (for example, see Patent Document 2), or one end edge of the panel material Is fixed to the base, the base material is fixed to the base adjacent to the edge of the one end, a cover is provided between them, and the next panel material is engaged with the cover (for example, Patent Document 3). reference).

JP 2012-12912 A Registered Utility Model No. 3015658 Utility Model Registration No. 3119386

  By the way, in the above ceiling panel, since one end edge of the panel material is fixed to the ground, the other end edge of the panel material is only engaged with other members. When an earthquake occurs, there is a tendency to cause a deviation between them. Although there is a request to improve the earthquake resistance of the suspended ceiling, if the panel materials are displaced as described above, the improvement of the earthquake resistance may be hindered.

  An object of this invention is to provide the construction method of a suspended ceiling which can improve seismic performance, and a suspended ceiling.

  In order to achieve the above object, according to the suspended ceiling construction method of the present invention, the fixed base and the first engagement portion disposed below the fixed base are arranged in the length direction at one end edge on one side in the width direction. A plurality of panel members are prepared, the second engaging portion extending in the length direction at the other end edge of the other side in the width direction, and the fixed base of the preceding panel material is suspended from the ceiling A fixing step of fixing to the base and an engaging step of engaging the second engaging portion of the succeeding panel member with the first engaging portion of the preceding panel member are alternately performed, and a plurality of steps are performed. A suspended ceiling construction method for forming a ceiling panel by arranging a panel material in parallel with the suspended ceiling base, wherein the one end edge of the preceding panel material or between the fixing step and the engaging step Performing an application step of applying an adhesive for adhering them to the other edge of the subsequent panel member And features.

  Accordingly, the first base of the one end edge of the preceding panel member in which the fixing base of the one end edge is fixed to the suspended ceiling base in the fixing step, or the one end edge of the preceding panel member in the subsequent engaging step. In the application process, an adhesive that adheres these members is applied to the other edge portion of the succeeding panel member having the second engaging portion engaged with the joint portion. Therefore, in addition to the engagement between the first engagement portion and the second engagement portion, the one end edge portion on the fixed side of the preceding panel material to the ceiling base and the other end edge portion of the subsequent panel material are added. Can be glued together. Therefore, since the shift | offset | difference which arises between panel materials at the time of an earthquake occurrence can be suppressed, seismic performance can be improved. Moreover, since an application | coating process is performed between a fixing process and an engagement process, drying of an adhesive agent can be suppressed and panel materials can be tied together more favorably.

  The first engagement portion is a recess that is recessed inward in the width direction including the base end side of the fixed base, and the second engagement portion protrudes outward in the width direction to the recess. In the case where the protrusions are insertable, in the application step, an adhesive may be applied to the lower surface of the leading panel side of the fixed base of the preceding panel material. Thereby, it becomes possible to insert the convex portion into the concave portion while covering the adhesive applied to the fixed base from below. Therefore, it is possible to easily interpose the adhesive between the lower surface of the fixed base and the upper surface of the convex portion while suppressing the wraparound of the adhesive below the convex portion. Therefore, since the exposure of the adhesive to the lower surface side of the ceiling panel can be suppressed, the ceiling panel is excellent in design.

  In the fixing step, in the case where a plurality of screws are spaced from the front end side of the recessed portion of the fixed base of the preceding panel material to the suspended ceiling base with a plurality of screws in the length direction, An adhesive may be applied along the screwing line. Thereby, since the adhesive can be accurately applied along the length direction of the panel material using the screwing line as a guide, the panel materials can be bonded more firmly.

  In the application step, an adhesive may be applied on the screwing line. Thereby, since the adhesive can be more accurately applied along the length direction of the panel material using the screwing line as a guide, the panel materials can be bonded more firmly.

  A plurality of insertion holes through which the screws for fixing the screws are inserted may be formed in the fixed base at intervals in the length direction. As a result, the adhesive can be more accurately applied along the length direction of the panel material by using the arrangement line of the insertion hole as a guide, so that the panel materials can be bonded more firmly.

  In the application step, an adhesive may be applied between the insertion hole and the recess. Thereby, the penetration of the adhesive into the insertion hole can be suppressed, and the panel materials can be bonded more firmly.

  The first engagement portion is a recess that is recessed inward in the width direction including the base end side of the fixed base, and the second engagement portion protrudes outward in the width direction to the recess. In the case where the convex portion can be inserted, an adhesive may be applied to the upper surface of the convex portion of the subsequent panel material in the application step. Accordingly, it is possible to easily interpose the adhesive between the lower surface of the fixed base and the upper surface of the convex portion while suppressing the adhesive from flowing around below the convex portion. Therefore, since the exposure of the adhesive to the lower surface side of the ceiling panel can be suppressed, the ceiling panel is excellent in design.

  The first engagement portion includes a first recess that is recessed inward in the width direction including the proximal end side of the fixed base, and a first protrusion that protrudes outward in the width direction below the first recess. A second convex portion that protrudes outward in the width direction and can be inserted into the first concave portion, and is concaved inward in the width direction to form the first convex portion. In the case of having a second recess into which the portion can be inserted, an adhesive may be applied to the opening of the first recess of the preceding panel material in the application step. Thus, since an adhesive agent is apply | coated to the opening part of the 1st recessed part of a preceding panel material, an application | coating operation | work becomes easy. Moreover, when the second convex portion of the succeeding panel member is inserted into the first concave portion of the preceding panel member, the first convex portion of the preceding panel member located below the second convex portion is the second concave portion of the succeeding panel member. Even if there is an adhesive overflowing from the first recess, it is inserted into the lower surface of the ceiling panel via the gap between the first projection and the second recess below the first recess. The distance to reach the side is long, and therefore it is difficult to reach the lower surface side of the ceiling panel. Therefore, since the exposure of the adhesive to the lower surface side of the ceiling panel can be suppressed, the ceiling panel is excellent in design.

  On the bottom surface of the second recess, a protrusion that protrudes from the bottom surface and abuts on the top surface of the first protrusion when inserted may extend along the length direction. As a result, there is an adhesive overflowing from the first concave portion, and even if the adhesive tries to move to the lower surface side of the ceiling panel through the gap between the first convex portion and the second concave portion below the first concave portion, The projecting portion of the concave portion comes into contact with the top surface of the first convex portion and blocks it. Therefore, since the exposure of the adhesive to the lower surface side of the ceiling panel can be further suppressed, the ceiling panel is further excellent in design.

  In the suspended ceiling according to the present invention, a fixed base and a first engaging portion disposed on the lower side of the fixed base are formed to extend in the length direction on the suspended ceiling base and one end edge on one side in the width direction. A ceiling panel having a plurality of panel members each having a second engaging portion extending in the length direction at the other end edge of the other side in the width direction, wherein the plurality of panel materials are Each of the fixed bases is fixed to the suspended ceiling base, and adjacent panel members engage the first engaging portion and the second engaging portion, and the one end edge and the other end edge The part is bonded with an adhesive. Thereby, the one end edge part of the panel material fixed to the ceiling base and the other end edge part of the panel material adjacent thereto are added to the engagement between the first engagement part and the second engagement part. Can be glued together. Therefore, since the shift | offset | difference which arises between panel materials at the time of an earthquake occurrence can be suppressed, seismic performance can be improved.

  The first engagement portion is a recess that is recessed inward in the width direction including the base end side of the fixed base, and the second engagement portion protrudes outward in the width direction to the recess. In the case where the convex portion can be inserted, the lower surface of the fixed base and the upper surface of the convex portion may be adhered by an adhesive. Thereby, since the exposure of the adhesive agent to the lower surface side of the ceiling panel can be suppressed, the ceiling panel is excellent in design.

  The first engagement portion includes a first recess that is recessed inward in the width direction including the proximal end side of the fixed base, and a first protrusion that protrudes outward in the width direction below the first recess. The second engaging portion protrudes outward in the width direction and can be inserted into the first recess, and the first protrusion protrudes inward in the width direction. When it has the 2nd crevice which can insert a part, the 1st crevice and the 2nd convex part may be pasted up with the adhesive. Thereby, since an adhesive agent should just be apply | coated to the 1st recessed part of a panel material, an application | coating operation | work becomes easy. In addition, when the second convex portion is inserted into the first concave portion, the first convex portion below the first convex portion is inserted into the second concave portion. Therefore, even if the adhesive overflows from the first concave portion is compared. The distance for this to reach the lower surface side of the ceiling panel through the gap between the first convex portion and the second concave portion below the first concave portion is long, and therefore it is difficult to reach the lower surface side of the ceiling panel. Therefore, since the exposure of the adhesive to the lower surface side of the ceiling panel can be suppressed, the ceiling panel is excellent in design.

  On the bottom surface of the second recess, a protrusion that protrudes from the bottom surface and abuts on the top surface of the first protrusion when inserted may extend in the length direction. As a result, there is an adhesive overflowing from the first concave portion, and even if this is going to move toward the lower surface side of the ceiling panel through the gap between the first convex portion and the second concave portion below the first concave portion, The ridge portion of the second concave portion comes into contact with the top surface of the first convex portion and is dammed up. Therefore, since the exposure of the adhesive to the lower surface side of the ceiling panel can be further suppressed, the ceiling panel is further excellent in design.

  According to the present invention, the earthquake resistance can be improved.

It is a perspective view showing the whole suspension ceiling composition concerning a 1st embodiment of the present invention. It is a front sectional view showing a panel material used for the suspended ceiling according to the first embodiment of the present invention. It is a front sectional view explaining the construction method of the suspended ceiling which concerns on 1st Embodiment of this invention. It is a sectional side view explaining the construction method of the suspended ceiling which concerns on 1st Embodiment of this invention. It is a sectional side view explaining fixation of the edge part of the length direction of a panel material. It is a sectional side view explaining another example of fixation of the edge part of the length direction of a panel material. It is a front sectional view explaining the construction method of the suspended ceiling which concerns on 2nd Embodiment of this invention. It is a front sectional view showing a panel material used for a suspended ceiling according to a third embodiment of the present invention. It is a front sectional view explaining the construction method of the suspended ceiling which concerns on 3rd Embodiment of this invention. It is a front sectional view showing a panel material used for a suspended ceiling according to a fourth embodiment of the present invention. It is a partial bottom view which shows the panel material used for the suspended ceiling which concerns on 4th Embodiment of this invention. It is a front sectional view explaining the construction method of the suspended ceiling which concerns on 4th Embodiment of this invention. It is a front sectional view showing a panel material used for a suspended ceiling according to a fifth embodiment of the present invention. It is a front sectional view explaining the construction method of the suspended ceiling which concerns on 5th Embodiment of this invention.

  A suspended ceiling construction method and a suspended ceiling according to a first embodiment of the present invention will be described with reference to FIGS.

  First, the overall configuration of the suspended ceiling 10 according to the first embodiment shown in FIG. 1 will be described. The suspended ceiling 10 includes a suspended ceiling base 11 and a ceiling panel 12.

  The suspended ceiling base 11 is attached to a plurality of suspension bolts 21 whose upper ends are fixed to an unillustrated building frame such as a floor slab or beam on the upper floor and suspended from the building frame, and to the respective lower ends of these suspension bolts 21. The hanger 22 is supported by a plurality of predetermined hangers 22, so that a plurality of field receivers 23 are arranged in parallel and parallel to each other, and the field receivers 23 are orthogonal to them. A plurality of field edges 25 supported by the clip 24; The plurality of field edges 25 are arranged horizontally in parallel with each other.

  In addition, the suspended ceiling base 11 is additionally provided with a brace 26 that is attached obliquely between the field edge receiver 23 and a predetermined suspension bolt 21, and an additional suspension suspended between the adjacent field edge receiver 23 and the field edge receiver 23. A field edge receiver 27 and a brace 28 attached obliquely between the field edge receiver 27 and a predetermined suspension bolt 21 are provided. The suspended ceiling base 11 has a brace 26 to secure the rigidity against the swaying of the field edge receiver 23 and the brace 28 to ensure the rigidity to the swaying of the field edge 25 in the orientation direction, and has a seismic reinforcement structure. .

  The ceiling panel 12 attached to the plurality of field edges 25 is configured by connecting a plurality of panel members 31 shown in FIG. The panel material 31 has a long plate shape that is long in a direction perpendicular to the paper surface of FIG. 2, and has a constant cross-sectional shape at all positions in the length direction X (direction perpendicular to the paper surface of FIG. 2). Is. Therefore, the thickness of the panel material 31 in the width direction Y orthogonal to the length direction X is constant at all positions in the length direction X, and the thickness direction is orthogonal to both the length direction X and the width direction Y. (Height direction) The thickness of Z is constant at all positions in the length direction X.

  The panel material 31 includes a frame 32 formed by bending a thin metal plate such as an aluminum plate, a filler 33 made of a foam material held in the frame 32, and an upper surface portion of the filler 33 that is not covered with the frame 32. And a protective sheet 34 made of an aluminum vapor deposited sheet or the like.

  The frame 32 has a flat plate-like lower plate portion 40 that constitutes the lower end surface of the panel material 31. The frame 32 includes a side plate portion 41 extending vertically upward from one end edge in the width direction Y of the lower plate portion 40, and an inner side in the width direction Y parallel to the lower plate portion 40 from the upper end edge portion of the side plate portion 41. An inner extension plate portion 42 extending inward, an intermediate plate portion 43 extending vertically upward from an end edge portion of the inner extension plate portion 42 opposite to the side plate portion 41, and an upper end edge of the intermediate plate portion 43 And an upper plate portion 44 that once extends inward in the width direction Y from the portion and is folded back to the upper side and extends from the side plate portion 41 to the outer side in the width direction Y and the outer end edge portion is folded downward. ing.

  Fixing in which the outer side, that is, the tip side portion of the upper plate portion 44 in the width direction Y from the intermediate plate portion 43 protrudes outward in the width direction Y at one end edge portion 48 that is one side of the width direction Y of the panel material 31. The fixed base 50 is formed with a rib 51 that bulges downward at the leading end in the width direction Y by folding the upper plate 44. Further, the inner extension plate portion 42 of the upper plate portion 44 and the portion that aligns the position in the width direction Y, the inner extension plate portion 42, and the intermediate plate portion 43 are one end that is one side of the width direction Y of the panel material 31. A concave portion 52 (first engaging portion) that is recessed inward in the width direction Y at the edge portion 48 is formed. The recess 52 includes the inner side of the fixed base 50 in the width direction Y, that is, the base end side. The concave portion 52 is disposed below the fixed base 50, and the fixed base 50 and the concave portion 52 are formed to extend in the length direction X at one end edge 48 in the width direction Y of the panel material 31.

  In addition, the frame 32 once extends vertically inward in the width direction Y from the upper edge of the side plate 55 and the side plate 55 extending vertically upward from the other end edge in the width direction Y of the lower plate 40. It has an upper plate portion 56 that is folded upward and extends outward in the width direction Y from the side plate portion 55 and the outer end edge portion is folded upward. A convex portion 59 (a first portion) in which the outer portion in the width direction Y of the upper plate portion 56 protrudes outward in the width direction Y at the other end edge 58 which is the other side of the width direction Y of the panel material 31. 2 engaging portion). The convex portion 59 is formed to extend in the length direction X at the other end edge portion 58 in the width direction Y of the panel material 31. The convex portion 59 can be inserted into the concave portion 52 of the other panel material 31. In other words, the panel material 31 can be joined to the ridges so that the projections 59 are inserted into the recesses 52. The convex portion 59 is formed with a rib 60 that bulges upward at the front end portion in the width direction Y by folding the upper plate portion 56.

  The suspended ceiling 10 is formed by arranging a plurality of the above panel materials 31 on the suspended ceiling base 11 shown in FIG. 1, and at that time, the plurality of arranged panel materials 31 form the ceiling panel 12. To do.

  Next, the construction method of the suspended ceiling 10 of 1st Embodiment is demonstrated.

  The operator performs a fixing process of attaching the preceding panel material 31 to the lower surface of the field edge 25 of the assembled suspended ceiling base 11. In this fixing step, the panel material 31 is attached to the field edge 25 in a posture in which the length direction X is aligned with the direction orthogonal thereto. In this fixing step, as shown in FIG. 3A, the operator brings the fixing base 50 formed on the one end edge 48 of the preceding panel material 31 (A) into contact with the lower surface of the field edge 25. In this state, it is fixed to the field edge 25 with screws. In order to avoid interference with the side plate portion 41 of the mounting tool (not shown), the screw V is a portion that extends outward in the width direction Y from the concave portion 52 of the fixed base 50 and is screwed into the concave portion 52 side from the rib 51. It is. At that time, the panel material 31 (A) comes into contact with the plurality of field edges 25 as shown in FIG. 4, and accordingly, a plurality of positions spaced in the length direction X respectively correspond to the field edges. 25 is screwed with a screw V. The operator arranges these screws V so that the positions in the width direction Y are aligned.

  Next, as shown in FIG. 3 (b), the operator uses the caulking gun G to attach an adhesive to one end edge 48 of the preceding panel material 31 (A) where the fixed base 50 and the recess 52 are formed. An application step of applying S is performed. Specifically, the adhesive S is continuously applied in the length direction X to the lower surface of the fixed base 50 on the distal end side with respect to the concave portion 52 and on the proximal end side with respect to the rib 51. At that time, since a plurality of screws V are arranged in the length direction X with the positions in the width direction Y aligned on the panel material 31 (A), along the lines connecting these screws V as marks. Apply adhesive S. More specifically, as shown in FIG. 4, the adhesive S is continuously applied on a screw fixing line, which is an arrangement line of a plurality of screws V, that is, on a line passing through the heads of all the screws V. . At this time, as shown in FIG. 3B, the adhesive S is not applied to any of the intermediate plate portion 43, the inner extension plate portion 42, the side plate portion 41, and the lower plate portion 40 of the panel material 31 (A). Apply so that it does not adhere. In other words, the adhesive S is applied so that the intermediate plate 43, the inner extending plate 42, the side plate 41, the lower plate 40, and the adhesive S have a gap therebetween. At that time, the adhesive S is applied so that the lower edge of the adhesive S is located below the upper surface of the inner extension plate portion 42 constituting the lower end surface of the recess 52.

  Next, as shown in FIGS. 3C and 3D, the operator engages the convex portion 59 of the succeeding panel member 31 (B) with the concave portion 52 of the preceding panel member 31 (A). An engaging step is performed. At this time, as shown in FIG. 3 (c), the succeeding panel material 31 (B) is in a forwardly rising posture with the convex portion 59 on the front side, and the convex portion 59 is bonded to the adhesive S and the panel. The material 31 (A) is inserted into the gap between the inner extension plate portion 42 and the corner portion between the side plate portions 41 and then inserted into the recess 52. That is, the convex portion 59 is inserted into the concave portion 52 while covering the adhesive S applied to the fixed base 50 of the preceding panel material 31 (A) from below. In other words, the convex portion 59 is inserted into the concave portion 52 so that the adhesive S is pressed upward by the convex portion 59. Thereafter, the succeeding panel member 31 (B) is rotated while the insertion of the convex portion 59 into the concave portion 52 is advanced, and the fixed base 50 (not shown in FIG. 3C) is placed on the lower surface of the field edge 25. Make contact. Then, as shown in FIG. 3 (d), the convex portion 59 of the succeeding panel member 31 (B) that has entered the concave portion 52 of the preceding panel member 31 (A) has its lower surface facing the leading panel member 31. The upper surface of the inner extension plate portion 42 of the recess 52 (A) is brought into contact with the recess 52.

  During the above rotation of the panel material 31 (B) that follows, the projection 59 remains in the recess 52 of the preceding panel material 31 (A), as shown in FIG. The upper surface is brought into contact with the adhesive S and pressed upward. Therefore, in the state where the fixed base 50 (not shown in FIG. 3D) of the succeeding panel member 31 (B) is brought into contact with the lower surface of the field edge 25 after the rotation, the preceding panel member 31 (A) The adhesive S applied to the fixed base 50 and the screw V is more proximal than the lower surface of the fixed base 50 and the lower surface of the screw V and the rib 60 on the upper surface of the convex portion 59 of the succeeding panel member 31 (B). It will be in the state interposed between these so that the side (inner side of the width direction Y) may be connected.

  Further, during the rotation of the succeeding panel member 31 (B), the rib 60 of the succeeding panel member 31 (B) bulges upward at the tip of the convex portion 59, so that the panel member 31 (B). Even if the adhesive S is pushed in the convex portion 59 and spreads in the width direction Y, the adhesive S can be prevented from exceeding the rib 60. Further, the convex portion 59 of the succeeding panel member 31 (B) has its lower surface on the upper surface of the inner extension plate portion 42 of the concave portion 52 of the preceding panel member 31 (A) due to its own weight and the repulsive force of the adhesive S. Even if the adhesive S exceeds the rib 60, the adhesive S is prevented from passing through the gap between the inner extension plate portion 42 and the convex portion 59. Can do.

  Here, as the adhesive S, any of a modified silicone resin, an epoxy-modified silicone resin, a urethane resin, an acrylic resin, and the like can be used. However, elastic adhesives such as modified silicone resins and epoxy-modified silicone resins are less likely to sag and are therefore suitable for construction on the lower surface of the fixed base 50 and the lower surface of the screw V as described above. In addition, since elastic adhesives such as modified silicone resins and epoxy-modified silicone resins are excellent in airtightness, the fixing base 50 and the screws V and the projections 59 are bonded over the entire length of the panel material 31 in the longitudinal direction X. The gap between the fixed base 50 and the screw V and the projection 59, that is, the airtightness between the adjacent panel material 31 and the panel material 31 can be improved, which is preferable. Furthermore, an elastic adhesive such as a modified silicone resin or an epoxy-modified silicone resin is preferable because it can absorb expansion and contraction due to linear expansion of the panel material 31 while maintaining an adhesive state.

  Next, although not shown in the figure, the operator performs a fixing process using screws V, similar to the preceding panel material 31 (A), for the subsequent panel material 31 (B) (FIG. 3A). reference). That is, the fixing base 50 of the succeeding panel member 31 (B) is fixed to the field edge 25 by screwing in a state where it is in contact with the lower surface of the field edge 25.

  Next, the operator uses the panel material 31 (B) as the preceding panel material 31 and further constructs the next succeeding panel material 31.

  The operator repeatedly performs the above-described fixing process, application process, and engagement process, so that the plurality of panel members 31 are arranged in parallel with the plurality of field edges 25 of the suspended ceiling base 11, as shown in FIG. A panel 12 is formed, and as a result, a suspended ceiling 10 is formed.

  As shown in FIG. 3 (d), between the lower surface of the fixed base 50 and the lower surface of the screw V of the preceding panel member 31 (A) and the upper surface of the convex portion 59 of the succeeding panel member 31 (B). When the adhesive S interposed so as to connect them is cured, the adhesive S is fixed to the fixed base 50 and the screw V fixed to the field edge 25 of the preceding panel material 31 (A), and the subsequent panel material. The convex part 59 of 31 (B) is adhere | attached, and these are tied.

  In the construction method of the first embodiment described above, the fixing step shown in FIG. 3 (a) and the engaging step shown in FIGS. 3 (c) and 3 (d) include the coating step shown in FIG. 3 (b). In the coating process, the succeeding panel material 31 is placed on the one end edge 48 in the width direction Y in which the fixing base 50 and the recess 52 of the preceding panel material 31 (A) are formed. The adhesive S for adhering the other end edge 58 in the width direction Y in which the convex part 59 of (B) is formed is applied.

  Moreover, the suspended ceiling 10 constructed by the construction method of the first embodiment described above is such that each fixed base 50 of the plurality of panel materials 31 is fixed to the field edge 25 of the suspended ceiling base 11 by screwing, and adjacent panels The material 31 and the panel material 31 engage the concave portion 52 and the convex portion 59, the one end edge 48 in the width direction Y in which the fixed base 50 and the concave portion 52 are formed, and the width in which the convex portion 59 is formed. The other edge portion 58 in the direction Y is bonded by the adhesive S.

  Here, both end portions in the length direction X of the plurality of connected panel members 31 are, as shown in FIG. 5, a rounded edge member 61 having a U-shaped cross section that is screwed to the field edge 25 with screws not shown. It is fixed to a joint member 62 having an E-shaped cross section. That is, the surrounding edge member 61 and the joint member 62 are screwed to the field edge 25 in advance. For example, the adhesive S is applied to the field edge 25 side of the surrounding edge member 61 and the joint member 62, so The panel material 31 is constructed as described above, and the corresponding edge member 61 and the joint member 62 correspond to the edge member 61 and the joint member 62 while flexing the corresponding members of the edge member 61 and the joint member 62 as appropriate. Insert into things. Since the panel material 31 is a long object, it is relatively easy to bend as described above. As a result, the adhesive S bonds the panel material 31 to the surrounding edge member 61 or the joint member 62.

  Alternatively, as shown in FIG. 6, both end portions in the length direction X of the plurality of panel members 31 may be fixed to the split type peripheral member 65 and the joint member 66. In this case, with respect to the peripheral edge member 65, the base 69 with the cover 68 removed is screwed to the field edge 25, and the joint member 66 with the base 72 with the cover 71 removed to the field edge 25. Screw it down. And the adhesive agent S is apply | coated to the field edge 25 side of the base 69 and the base 72, and the some panel material 31 is constructed as mentioned above. Thereafter, the cover 68 is attached to the base 69 and the cover 71 is attached to the base 72. As a result, the adhesive S adheres the panel material 31 to the peripheral edge member 65 or the joint member 66.

  According to the first embodiment described above, the one end edge 48 of the preceding panel material 31 (A) fixed to the field edge 25 of the suspended ceiling base 11 by screwing in the fixing step is connected to this and the subsequent edge. The adhesive S that bonds the other end edge 58 of the panel material 31 (B) is applied in the application step. Therefore, the one end edge 48 on the fixed side to the field edge 25 of the preceding panel member 31 (A) and the other end edge 58 of the succeeding panel member 31 (B) adjacent to the recessed portion 52 In addition to the engagement with the projection 59, it can be bonded and fastened. Therefore, since the shift | offset | difference which arises between the panel materials 31 at the time of an earthquake occurrence can be suppressed and the ceiling panel 12 functions as an integrated object, seismic performance can be improved. Moreover, since an application | coating process is performed between a fixing process and an engagement process, drying of the adhesive agent S can be suppressed and the panel materials 31 can be more tightly bound.

  Further, in the structure in which the concave portion 52 that is recessed inward in the width direction Y including the base end side of the fixed base 50 and the convex portion 59 that protrudes outward in the width direction Y and can be inserted into the concave portion 52 are engaged. In the application step, the adhesive S is applied to the lower surface of the leading end side of the recessed portion 52 of the fixed base 50 of the preceding panel material 31 (A). Thereby, the convex part 59 of the succeeding panel material 31 (B) is covered with the panel material 31 (A) while covering the adhesive S applied to the fixed base 50 of the preceding panel material 31 (A) from the lower side. ) In the recess 52. Therefore, the lower surface of the fixed base 50 of the preceding panel material 31 (A) and the following panel material are suppressed while suppressing the wraparound of the adhesive S below the convex portion 59 of the succeeding panel material 31 (B). It is possible to easily bond these with the adhesive S by interposing the adhesive S between the upper surface of the convex portion 59 of 31 (B). Therefore, since the exposure to the lower surface side of the ceiling panel 12 by the protrusion of the adhesive S can be suppressed, the ceiling panel 12 is excellent in design.

  Moreover, the lower surface of the convex part 59 of the succeeding panel material 31 (B) contacts the upper surface of the inner extension plate part 42 which becomes the lower surface of the concave part 52 of the preceding panel material 31 (A) in the engaged state. Therefore, even if the adhesive S is pushed by the convex portion 59 of the succeeding panel member 31 (B) and the adhesive S spreads, the adhesive S is in contact with the inner extension plate portion 42 of the preceding panel member 31 (A). It is possible to prevent passing through the gap with the convex portion 59 of the subsequent panel material 31 (B). Therefore, since the exposure to the lower surface side of the ceiling panel 12 by the protrusion of the adhesive S can be further suppressed, the ceiling panel 12 is further excellent in design.

  Further, in the fixing step, a plurality of screws are provided at intervals in the length direction X to the plurality of field edges 25 of the suspended ceiling base 11 with the tip side from the concave portion 52 of the fixing base 50 of the preceding panel material 31 (A). In the coating step, the adhesive S is applied along the screwing line. Thereby, since the adhesive S can be accurately applied along the length direction X of the panel material 31 using the screwing line as a guide, the panel materials 31 can be bonded more firmly.

  In addition, since the adhesive S is applied on the screwing line in the coating process, the adhesive can be more accurately applied along the length direction X of the panel material using the screwing line as a guide. Thus, the panel members 31 can be bonded more firmly.

  Next, a suspended ceiling construction method and suspended ceiling according to a second embodiment of the present invention will be described mainly with reference to FIG. 7 with a focus on differences from the first embodiment.

  The second embodiment differs from the first embodiment in the coating process. That is, the second embodiment is similar to the first embodiment in the application step shown in FIG. 7B after the fixing step with the screw V of the preceding panel material 31 (A) shown in FIG. An operator applies the adhesive S to the other end edge portion 58 where the convex portion 59 of the subsequent panel material 31 (B) is formed using the caulking gun G. Specifically, the adhesive S is continuously applied over the entire length in the length direction X to the base end side (inside in the width direction Y) from the rib 60 on the upper surface of the convex portion 59 of the subsequent panel material 31 (B). Apply.

  Further, in the second embodiment, in the engagement step shown in FIGS. 7C and 7D performed after the coating step, as shown in FIG. With (B) as a front-up posture with the convex portion 59 as the front side, the convex portion 59 is inserted into the concave portion 52 of the preceding panel material 31 (A). Thereafter, the succeeding panel material 31 (B) is rotated while the insertion of the convex portion 59 into the concave portion 52 is advanced, and the fixed base 50 (not shown in FIG. 7C) is placed on the lower surface of the field edge 25. Make contact. Then, as shown in FIG. 7 (d), the convex portion 59 of the succeeding panel material 31 (B) remains in the state where the convex portion 59 enters the concave portion 52 of the preceding panel material 31 (A) and the lower surface thereof is advanced. The panel material 31 (A) is in contact with the upper surface of the inner extension plate portion 42 which is the lower surface of the concave portion 52 and engages with the concave portion 52.

  During the rotation of the succeeding panel member 31 (B), the convex portion 59 remains in the concave portion 52 of the preceding panel member 31 (A), and the adhesive S applied to the upper surface thereof is applied. After making contact with the lower surface of the fixed base 50 and the lower surface of the screw V of the preceding panel material 31 (A), it is pressed upward. Therefore, in the state where the fixed base 50 (not shown in FIG. 7D) of the subsequent panel member 31 (B) is brought into contact with the lower surface of the field edge 25 after the rotation, the subsequent panel member 31 (B ) Is applied to the lower surface of the fixed base 50 of the preceding panel material 31 (A) and the lower surface of the screw V, and the upper surface of the convex portion 59 of the subsequent panel material 31 (B). It will be in the state interposed between these so that it may connect. Note that, depending on the application position, the adhesive S may not contact the lower surface of the screw V but may contact only the lower surface of the fixed base 50.

  Since the rib 60 of the succeeding panel member 31 (B) bulges upward from the convex portion 59, during the rotation of the succeeding panel member 31 (B), the succeeding panel member 31 (B) Even if the adhesive S of the convex portion 59 is pushed by the preceding panel material 31 (A) and spreads in the width direction Y, the adhesive S can be prevented from exceeding the rib 60. Moreover, the convex part 59 of the panel material 31 (B) of a succeeding is the inner extension board part which is the lower surface in the lower surface of the recessed part 52 of the preceding panel material 31 (A) by the self-weight and the repulsive force of the adhesive agent S 42, since the adhesive S may exceed the rib 60, the adhesive S passes through the gap between the inner extension plate portion 42 and the convex portion 59. Can be prevented.

  Next, as in the first embodiment, the operator performs a fixing process using screws V, similar to the preceding panel material 31 (A), for the subsequent panel material 31 (B) (FIG. 7 ( a)). That is, the fixing base 50 of the succeeding panel member 31 (B) is fixed to the field edge 25 by screwing in a state where it is in contact with the lower surface of the field edge 25.

  Next, the operator constructs the next panel material 31 with the panel material 31 (B) as the preceding panel material 31.

  The operator repeatedly performs the above-described fixing process, application process, and engagement process, so that a plurality of panel members 31 are juxtaposed on the field edge 25 of the suspended ceiling base 11, as shown in FIG. As a result, the suspended ceiling 10 is formed.

  As shown in FIG. 7D, the lower surface of the fixed base 50 and the lower surface of the screw V of the preceding panel material 31 (A) are connected to the upper surface of the convex portion 59 of the subsequent panel material 31 (B). When the adhesive S interposed therebetween is cured, the adhesive S forms the fixed base 50 and the screw V of the preceding panel material 31 (A) and the convex portion 59 of the succeeding panel material 31 (B). Glue and bind them together.

  In the construction method of the second embodiment described above, the fixing step shown in FIG. 7 (a) and the engaging step shown in FIGS. 7 (c) and 7 (d) include the coating step shown in FIG. 7 (b). In the coating step, the preceding panel material 31 (A) is formed on the other end edge 58 in the width direction Y where the projection 59 of the subsequent panel material 31 (B) is formed. The adhesive S for adhering the one end edge 48 in the width direction Y in which the fixed base 50 and the recess 52 are formed is applied.

  According to the second embodiment described above, the one end edge 48 of the preceding panel material 31 (A) fixed to the field edge 25 of the suspended ceiling base 11 in the fixing process, and the subsequent panel material 31 (B ) Is applied to the other end edge 58 of the succeeding panel material 31 (B) in the application step. Accordingly, the one end edge 48 on the fixed side of the preceding panel material 31 (A) to the suspended ceiling base 11 and the other end edge 58 of the succeeding panel material 31 (B) adjacent thereto are formed into the recess 52. In addition to the engagement with the projection 59, it can be bonded and fastened. Therefore, as in the first embodiment, it is possible to suppress the deviation that occurs between the panel members 31 when an earthquake occurs, and the ceiling panel 12 functions as an integral object, so that the earthquake resistance can be improved. Moreover, since an application | coating process is performed between a fixing process and an engagement process, drying of the adhesive agent S can be suppressed and the panel materials 31 can be more tightly bound.

  Further, in the structure in which the concave portion 52 that is recessed inward in the width direction Y including the base end side of the fixed base 50 and the convex portion 59 that protrudes outward in the width direction Y and can be inserted into the concave portion 52 are engaged. In the application step, the adhesive S is applied to the upper surface of the convex portion 59 of the subsequent panel material 31 (B). Accordingly, the adhesive S is interposed between the lower surface of the fixed base 50 and the upper surface of the convex portion 59 while suppressing the wraparound of the adhesive S to the lower side of the convex portion 59, and the lower surface of the fixed base 50 is convex. It is possible to easily bond the upper surface of the portion 59 with the adhesive S. Therefore, since the exposure to the lower surface side of the ceiling panel 12 by the protrusion of the adhesive S can be suppressed, the ceiling panel 12 is excellent in design.

  Moreover, the lower surface of the convex part 59 of the succeeding panel material 31 (B) contacts the upper surface of the inner extension plate part 42 which is the lower surface of the concave part 52 of the preceding panel material 31 (A) in the engaged state. Therefore, even if the adhesive S is pushed by the fixed base 50 and spreads, the adhesive S can be prevented from passing through the gap between the inner extension plate portion 42 and the convex portion 59. Therefore, since the exposure to the lower surface side of the ceiling panel 12 by the protrusion of the adhesive S can be further suppressed, the ceiling panel 12 is further excellent in design.

  Next, a suspended ceiling construction method and a suspended ceiling according to a third embodiment of the present invention will be described mainly with reference to FIGS. 1, 8, and 9, focusing on differences from the first embodiment.

  In the third embodiment, the ceiling panel 12 attached to the plurality of field edges 25 of the suspended ceiling base 11 shown in FIG. 1 is configured by connecting a plurality of panel members 101 shown in FIG. The panel material 101 has a long plate shape that is long in the direction perpendicular to the paper surface of FIG. 8, and has a constant cross-sectional shape at all positions in the length direction X (direction perpendicular to the paper surface of FIG. 8). It is. Therefore, the width of the width direction Y orthogonal to the length direction X of the panel material 101 is constant at all positions in the length direction X, and the thickness direction orthogonal to both the length direction X and the width direction Y. (Height direction) The thickness of Z is constant at all positions in the length direction X.

  The panel material 101 includes a frame 102 formed by extrusion molding of a synthetic resin, a filler 103 made of a foam material held in the frame 102, and an aluminum vapor deposition that covers an upper surface portion of the filler 103 that is not covered by the frame 102. And a protective sheet 104 made of a sheet or the like.

  The frame 102 has a lower plate portion 110 that constitutes the lower end surface of the panel material 101. The frame 102 has a concave plate portion 112 that is concave upward at one end side in the width direction Y of the lower plate portion 110 and a step plate that is stepped upward at one end portion in the width direction Y of the lower plate portion 110. Part 113. The frame 102 includes a side plate portion 114 extending vertically upward from one end edge in the width direction Y of the step plate portion 113, and an inner side in the width direction Y parallel to the lower plate portion 110 from the upper end edge portion of the side plate portion 114. An inner extension plate portion 115 extending inward, an intermediate plate portion 116 extending vertically upward from an end edge portion of the inner extension plate portion 115 opposite to the side plate portion 114, and an upper end edge of the intermediate plate portion 116 And an upper plate portion 117 extending inward and outward in the width direction Y from the portion. The upper plate part 117 extends outward in the width direction Y from the side plate part 114.

  The fixed portion in which the outer side, that is, the tip side portion of the upper plate portion 117 in the width direction Y from the intermediate plate portion 116 protrudes outward in the width direction Y at one end edge portion 118 that is one side of the width direction Y of the panel material 101 The base 120 is used. In addition, the inner extension plate portion 115 of the upper plate portion 117 is aligned with the position in the width direction Y, and the inner extension plate portion 115 and the intermediate plate portion 116 are on one side in the width direction Y of the panel material 101. A concave portion 122 (first engaging portion, first concave portion) that is recessed inward in the width direction Y at the edge portion 118 is formed. The recess 122 includes the inner side of the fixed base 120 in the width direction Y, that is, the base end side. The concave portion 122 is disposed below the fixed base 120, and the fixed base 120 and the concave portion 122 are formed to extend in the length direction X at one end edge 118 in the width direction Y of the panel material 31.

  Further, the step plate portion 113, the side plate portion 114, and the inner extension plate portion 115 of the lower plate portion 110 are protruded outwardly in the width direction Y at the one end edge portion 118 of the panel material 101 (first engagement). Joint, first convex portion). The convex part 123 protrudes outward in the width direction Y below the concave part 122, and shares the inner extension plate part 115 with the concave part 122. The convex portion 123 is formed to extend in the length direction X at one edge portion 118 in the width direction Y of the panel material 101.

  The frame 102 includes a concave plate portion 124 that is concave upward on the other end side in the width direction Y of the lower plate portion 110, and an outer edge in the width direction Y from the other end edge in the width direction Y of the concave plate portion 124. A laterally extending lower plate 125 extending from the other end edge of the concave plate 124 in the width direction Y, a side plate 126 extending vertically upward, and an outer side in the width direction Y from the upper end of the side plate 126. An outer extension upper plate portion 127 (second engaging portion, second convex portion) that extends inward, and an inner extension plate portion 128 that extends inward in the width direction Y from the intermediate position in the vertical direction of the side plate portion 126. have.

  The outer extending upper plate portion 127 protrudes outward in the width direction Y at the other end edge portion 130 which is the other side in the width direction Y of the panel material 101. The outer extending upper plate portion 127 is formed to extend in the length direction X at the other end edge portion 130 in the width direction Y of the panel material 101.

  Further, the outer extending lower plate portion 125, the side plate portion 126, and the outer extending upper plate portion 127 are concave portions 132 (second engaging portions) recessed inward in the width direction Y at the other end edge portion 130 of the panel material 101. , Second recess). The recess 132 is recessed inward in the width direction Y below the outer extending upper plate portion 127 and includes the outer extending upper plate portion 127. The recess 132 is formed to extend in the length direction X at the other end edge 130 in the width direction Y of the panel material 101. The outer extending upper plate portion 127 can be inserted into the concave portion 122 of the other panel material 101, and the concave portion 132 can insert the convex portion 123 of the other panel material 101. When the convex portion 123 of the other panel material 101 is inserted into the concave portion 132, the outer extending lower plate portion 125 covers the convex portion 123 of the other panel material 101 on the lower side. On the bottom surface of the recess 132, an elastically deformable ridge 133 protruding from the bottom surface is formed extending in the length direction X.

  The suspended ceiling 10 is formed by arranging a plurality of the above panel materials 101 on the suspended ceiling base 11 shown in FIG. 1. At that time, the plurality of arranged panel materials 101 form the ceiling panel 12. To do.

  Next, the construction method of the suspended ceiling 10 of 3rd Embodiment is demonstrated.

  The operator performs a fixing process similar to that in the first embodiment in which the preceding panel material 101 is attached to the lower surface of the field edge 25 of the assembled suspended ceiling base 11. In this fixing step, as shown in FIG. 9A, the fixing base 120 of the preceding panel material 101 (A) is fixed to the field edge 25 by screwing in a state where it is in contact with the lower surface of the field edge 25. To do. In order to avoid interference with the side plate portion 114 of the mounting tool (not shown), the screw V is screwed into a portion extending outward in the width direction Y from the concave portion 122 of the fixed base 120. The panel material 101 (A) is screwed to the corresponding edge 25 by screws V at a plurality of positions spaced in the length direction X, and the operator can connect these screws V in the width direction Y. Are arranged so that they are aligned.

  Next, as shown in FIG. 9 (b), the operator uses the caulking gun G to attach an adhesive to one end edge 118 of the preceding panel member 101 (A) where the fixed base 120 and the recess 122 are formed. An application step of applying S is performed. Specifically, the adhesive S is continuously applied in the length direction X so as to close the opening of the recess 122 of the preceding panel material 101 (A).

  Next, as shown in FIG. 9C, the operator engages the outer extension upper plate portion 127 of the succeeding panel member 101 (B) with the concave portion 122 of the preceding panel member 101 (A). Then, an engaging step is performed in which the convex portion 123 of the preceding panel material 101 (A) is engaged with the concave portion 132 of the subsequent panel material 101 (B). In this engagement step, the protrusion 133 protruding from the bottom surface of the recess 132 of the succeeding panel member 101 (B) comes into contact with the top surface of the protrusion 123 of the preceding panel member 101 (A). In this state, a gap in the width direction Y is formed between the intermediate plate portion 116 of the recess 122 of the preceding panel member 101 (A) and the outer extending upper plate portion 127 of the succeeding panel member 101 (B). As a result, the adhesive S is filled by being pushed into the gap by the outer extending upper plate portion 127. At this time, the adhesive S protruding from the concave portion 122 is blocked by the protrusion 133 and is prevented from reaching the outer extension lower plate portion 125 side. Further, even if the adhesive S exceeding the protruding portion 133 is compared, the lower surface of the convex portion 123 and the upper surface of the outer extending lower plate portion 125 which is the lower surface of the concave portion 132 are in contact with each other, and therefore, the gaps between these are exceeded. Is prevented. In this engaged state, the adhesive S is interposed between the concave portion 122 and the outer extending upper plate portion 127 so as to connect the convex portion 123 and the upper portion of the convex portion 133 of the concave portion 132. It becomes a state.

  Next, an operator performs the fixing process similar to the preceding panel material 101 (A) with respect to the subsequent panel material 101 (B) (refer Fig.9 (a)). That is, the fixing base 120 of the succeeding panel member 101 (B) is fixed to the field edge 25 with the screw V while being in contact with the lower surface of the field edge 25. Next, the panel material 101 (B) is used as the preceding panel material 101, and the next panel material 101 is further constructed.

  The operator repeats the above fixing process, application process, and engagement process to form a ceiling panel 12 by arranging a plurality of panel materials 101 in parallel with the suspended ceiling base 11, as shown in FIG. As a result, the suspended ceiling 10 is formed.

  As shown in FIG. 9 (c), the concave portion 122 and the outer extending upper plate portion 127 are connected, and the convex portion 123 and the convex portion 133 of the concave portion 132 are interposed between them so as to be connected. When the adhesive S is cured, the adhesive S bonds the concave portion 122 and the outer extending upper plate portion 127, bonds the convex portion 123 and the concave portion 132, and binds them together.

  In the construction method of the third embodiment described above, the fixing step shown in FIG. 9 (a) and the engaging step shown in FIG. 9 (c) alternate with the application step shown in FIG. 9 (b) in between. In the coating process, the following panel material 101 (B) is placed on the one end edge 118 in the width direction Y in which the fixing base 120 and the recess 122 of the preceding panel material 101 (A) are formed. The adhesive S for bonding the other end edge 130 in the width direction Y in which the outer extending upper plate portion 127 is formed is applied.

  In the suspended ceiling 10 constructed by the construction method of the third embodiment described above, the respective fixed bases 120 of the plurality of panel members 101 are fixed to the field edge 25 of the suspended ceiling base 11 by screws, and the adjacent panel members 101 are arranged. Further, the panel members 101 engage the concave portion 122 and the outer extending upper plate portion 127 and also engage the convex portion 123 and the concave portion 132, so that the fixed base 120, the concave portion 122, and the convex portion 123 are formed. The one end edge 118 in the width direction Y and the other end edge 130 in the width direction Y in which the outer extending upper plate portion 127 and the recess 132 are formed are bonded by the adhesive S.

  According to the third embodiment described above, the one end edge 118 in the width direction Y of the panel material 101 includes the recess 122 that is recessed inward in the width direction Y including the base end side of the fixed base 120. It has a convex portion 123 that protrudes outward in the width direction Y on the lower side, and can be inserted into the concave portion 122 by projecting outward in the width direction Y to the other end edge 130 of the panel material 101 in the width direction Y. It has an outer extending upper plate portion 127 and a concave portion 132 that is recessed inward in the width direction Y and into which the convex portion 123 can be inserted. The concave portion 122 and the outer extended upper plate portion 127 are made of adhesive S. The convex portion 123 and the concave portion 132 are adhered by the adhesive S. Thereby, since the adhesive S should just be apply | coated to the recessed part 122 of the panel material 101, an application | coating operation | work becomes easy. In addition, when the outer extension upper plate portion 127 is inserted into the recess 122, the lower protrusions 123 are fitted into the recess 132, so even if the adhesive S overflowing from the recess 132 is compared. The distance for this to reach the lower surface side of the ceiling panel 12 through the gap between the convex portion 123 below the concave portion 122 and the concave portion 132 is long, and therefore it is difficult to reach the lower surface side of the ceiling panel 12. Therefore, since the exposure of the adhesive S to the lower surface side of the ceiling panel 12 can be suppressed, the ceiling panel 12 is excellent in design.

  On the bottom surface of the recess 132, a protrusion 133 that protrudes from the bottom surface and abuts against the top surface of the projection 123 during insertion extends in the length direction X, so that the adhesive S overflowing from the recess 122 is formed. Yes, even if this is going to move toward the lower surface side of the ceiling panel 12 through the gap between the convex part 123 and the concave part 132 below the concave part 122, the protruding part 133 of the concave part 132 becomes the convex part 123. It will abut against the top surface and stop. In addition, since the lower surface of the convex portion 123 and the lower surface of the concave portion 132 are in contact with each other, the adhesive S hardly passes through these gaps. Therefore, since the exposure of the adhesive S to the lower surface side of the ceiling panel 12 can be further suppressed, the ceiling panel 12 is further excellent in design.

  Next, a suspended ceiling construction method and suspended ceiling according to a fourth embodiment of the present invention will be described mainly with respect to differences from the first embodiment with reference to FIGS.

  In the fourth embodiment, the ceiling panel 12 attached to the plurality of field edges 25 of the suspended ceiling base 11 shown in FIG. 1 is configured by connecting a plurality of panel members 151 shown in FIG. The panel material 151 has a long plate shape that is long in a direction perpendicular to the paper surface of FIG. 10, and all of the length direction X (direction perpendicular to the paper surface of FIG. 10) except for the presence or absence of an insertion hole 171 described later. It has a certain cross-sectional shape at the position of. Therefore, the width of the width direction Y orthogonal to the length direction X of the panel material 151 is constant at all positions in the length direction X, and the thickness direction is orthogonal to both the length direction X and the width direction Y. (Height direction) The thickness of Z is constant at all positions in the length direction X.

  The panel material 151 includes a frame 152 formed by extrusion molding of a synthetic resin, a filler 153 made of a foam material held in the frame 152, and an aluminum vapor deposition that covers an upper surface portion of the filler 153 that is not covered by the frame 152. And a protective sheet 154 made of a sheet or the like.

  The frame 152 includes a lower plate portion 160 constituting a lower end surface of the panel member 151, a side plate portion 161 extending vertically upward from one end edge in the width direction Y of the lower plate portion 160, and a height direction of the side plate portion 161. An outer extension plate portion 162 (first engagement portion, first convex portion) extending from the middle position of Z to the outside in the width direction Y in parallel with the lower plate portion 160, and a width from the upper edge of the side plate portion 161 And an upper plate portion 163 extending inward and outward in the direction Y. The upper plate portion 163 extends outward in the width direction Y from the outer extension plate portion 162.

  The fixed base in which the outer side in the width direction Y of the upper plate part 163, that is, the portion on the tip side protrudes outward in the width direction Y at one end edge 166 that is one side of the width direction Y of the panel material 151. It is 167. In addition, the portion of the upper plate portion 163 that aligns with the outer extending plate portion 162 in the width direction Y and the portion between the outer extending plate portion 162 and the side plate portion 161 are the same in the width direction Y of the panel material 151. A concave portion 170 (first engaging portion, first concave portion) that is recessed inward in the width direction Y is formed at one end edge portion 166 on the side. The recess 170 includes the inner side, that is, the base end side in the width direction Y of the fixed base 167. The concave portion 170 is disposed on the lower side of the fixed base 167, and the fixed base 167 and the concave portion 170 are formed to extend in the length direction X at one end edge portion 166 in the width direction Y of the panel material 151.

  The outer extension plate portion 162 protrudes outward in the width direction Y at one end edge 166 of the frame 152, protrudes outward in the width direction Y below the recess 170, and partially configures the recess 170. Yes. The outer extending plate portion 162 is formed to extend in the length direction X at one end edge portion 166 in the width direction Y of the panel material 151. A plurality of insertion holes 171 through which the screws V for screw fixing are inserted are formed at an interval in the length direction X as shown in FIG. 11 on the outer side in the width direction Y from the outer extension plate portion 162 of the fixed base 167. ing. These insertion holes 171 are elongated holes that are long in the length direction X, and are aligned with each other in the width direction Y.

  The frame 152 includes a side plate portion 176 that extends vertically upward from the other end edge in the width direction Y of the lower plate portion 160, and an upper plate portion that extends inward in the width direction Y from the upper end portion of the side plate portion 176. 177 and an extending plate portion 178 that extends vertically upward from an intermediate position in the width direction Y of the upper plate portion 177 and then extends outward in the width direction Y.

  A portion of the extending plate portion 178 that extends outward in the width direction Y protrudes outward in the width direction Y at the other end edge portion 180 on the other side of the width direction Y of the panel material 151 ( 2nd engaging part, 2nd convex part). The convex portion 181 is formed to extend in the length direction X at the other end edge portion 180 in the width direction Y of the panel material 151.

  Further, a part of the upper plate part 177 and the extended plate part 178 are recessed inwardly in the width direction Y in the other end edge part 180 of the panel material 151 (second engaging part, second recessed part) and It has become. The concave portion 182 is recessed inward in the width direction Y below the convex portion 181, and includes the convex portion 181. The recess 182 is formed to extend in the length direction X at the other end edge 180 in the width direction Y of the panel material 151. The convex portion 181 can be inserted into the concave portion 170 of the other panel material 151, and the concave portion 182 can insert the outer extension plate portion 162 of the other panel material 151. A plurality of ribs 183 projecting downward on the lower surface of the outer edge portion in the width direction Y are formed on the convex portion 181 side by side in the width direction Y.

  The suspended ceiling 10 is formed by arranging a plurality of the above panel materials 151 on the suspended ceiling base 11 shown in FIG. 1, and at that time, the plurality of panel materials 151 arranged in parallel form the ceiling panel 12. To do.

  Next, the construction method of the suspended ceiling 10 of 4th Embodiment is demonstrated.

  The operator performs a fixing process similar to that of the first embodiment in which the preceding panel material 151 is attached to the lower surface of the field edge 25 of the assembled suspended ceiling base 11. In this fixing step, as shown in FIG. 12A, the fixing base 167 of the preceding panel material 151 (A) is fixed to the field edge 25 by screwing in a state where it is in contact with the lower surface of the field edge 25. To do. The screw V is inserted into an insertion hole 171 formed outside the concave portion 170 of the fixed base 167 in the width direction Y and screwed into the field edge 25. At that time, the panel material 151 (A) comes into contact with the plurality of field edges 25, and accordingly, the plurality of screws V are arranged at positions where the plurality of screws V overlap the field edges 25 in the length direction X. 171 is inserted into each field edge 25. Therefore, these screws V align the positions in the width direction Y accurately.

  Next, as shown in FIG. 12 (b), the operator uses the caulking gun G to attach an adhesive to one end edge 166 of the preceding panel material 151 (A) where the fixed base 167 and the recess 170 are formed. An application step of applying S is performed. Specifically, the adhesive S is continuously applied in the length direction X between the insertion hole 171 and the recess 170 of the fixed base 167. At that time, the adhesive S is applied along the plurality of insertion holes 171 aligned in the length direction X with the positions in the width direction Y aligned.

  Next, as shown in FIGS. 12C and 12D, the operator engages the convex portion 181 of the subsequent panel material 151 (B) with the concave portion 170 of the preceding panel material 151 (A). Then, an engaging step is performed in which the outer extending plate portion 162 of the preceding panel member 151 (A) is engaged with the recess 182 of the succeeding panel member 151 (B). At this time, as shown in FIG. 12 (c), the succeeding panel material 151 (B) is set to a forwardly rising posture with the convex portion 181 on the front side, and the convex portion 181 is preceded by the adhesive S. The panel material 151 (A) is inserted into a gap with the outer extension plate portion 162 and then inserted into the recess 170. That is, the convex portion 181 is inserted into the concave portion 170 while covering the adhesive S applied to the fixed base 167 from below. Thereafter, the succeeding panel member 151 (B) is rotated while the insertion of the convex portion 181 into the concave portion 170 is advanced, and the fixed base 167 (not shown in FIG. 12C) is placed on the lower surface of the field edge 25. Make contact. Then, as shown in FIG. 12D, the convex portion 181 of the succeeding panel material 151 (B) in a state of entering the concave portion 170 of the preceding panel material 151 (A) Due to the repulsive force, the rib 183 comes into contact with the upper surface of the outer extension plate portion 162 which is the lower surface of the concave portion 170 of the preceding panel material 151 (A) and engages with the concave portion 170. Further, the outer extending plate portion 162 of the preceding panel material 151 (A) enters and engages with the concave portion 182 of the succeeding panel material 151 (B).

  During the above rotation of the panel member 151 (B), as shown in FIG. 12 (d), the convex portion 181 remains in the concave portion 170 of the preceding panel material 151 (A). The upper surface of the upper plate portion 177 is brought into contact with the adhesive S and pressed upward. Therefore, in the state where the fixed base 167 (not shown in FIG. 12D) of the subsequent panel material 151 (B) is brought into contact with the lower surface of the field edge 25 after the rotation, the preceding panel material 151 (A) The adhesive S applied to the fixed base 167 is interposed between the lower surface of the fixed base 167 and the upper surface of the upper plate portion 177 of the succeeding panel member 151 (B). .

  Here, since the extended plate portion 178 of the subsequent panel material 151 (B) extends upward from the upper plate portion 177, it is pushed by the upper plate portion 177 of the subsequent panel material 151 (B). Even if the adhesive S spreads in the width direction Y, the adhesive S can be prevented from exceeding the extended plate portion 178. Further, since the rib 183 of the succeeding panel member 151 (B) comes into contact with the upper surface of the outer extending plate portion 162 that is the lower surface of the concave portion 170 of the preceding panel member 151 (A), the adhesive S extends. Even if the plate portion 178 is exceeded, for example, the adhesive S can be prevented from passing through the gap between the rib 183 and the outer extending plate portion 162.

  Next, an operator performs the fixing process with the same screw | thread V as the preceding panel material 151 (A) with respect to the subsequent panel material 151 (B) (refer Fig.12 (a)). That is, the fixing base 167 of the succeeding panel member 151 (B) is fixed to the field edge 25 by screwing in a state where it is in contact with the lower surface of the field edge 25. Next, the panel material 151 (B) is used as the preceding panel material 151, and the next panel material 151 is further applied.

  The operator repeats the above fixing process, coating process, and engaging process to form a ceiling panel 12 by arranging a plurality of panel members 151 side by side on the suspended ceiling base 11, as shown in FIG. As a result, the suspended ceiling 10 is formed.

  As shown in FIG. 12D, the lower surface of the fixed base 167 of the preceding panel material 151 (A) and the upper surface of the upper plate portion 177 of the succeeding panel material 151 (B) are connected to each other. When the adhesive S intervening is cured, the adhesive S adheres the fixed base 167 of the preceding panel material 151 (A) and the upper plate portion 177 of the succeeding panel material 151 (B), and binds them together. .

  In the construction method of the fourth embodiment described above, the fixing step shown in FIG. 12 (a) and the engaging step shown in FIGS. 12 (c) and 12 (d) are between the applying steps shown in FIG. 12 (b). In the coating process, the succeeding panel material 151 (A) has a trailing panel on one end edge 166 in the width direction Y in which the fixed base 167 and the recess 170 are formed. The adhesive S for adhering the other end edge 180 in the width direction Y in which the convex portion 181 of the material 151 (B) is formed is applied.

  In the suspended ceiling 10 constructed by the construction method of the fourth embodiment described above, the fixing base 167 of each of the plurality of panel materials 151 is screwed to the field edge 25 of the suspended ceiling base 11, and the adjacent panel material 151 and panel The materials 151 engage the concave portion 170 and the convex portion 181, and engage the concave portion 182 and the outer extending plate portion 162 to form the fixed base 167, the concave portion 170, and the outer extending plate portion 162. One end edge portion 166 in the width direction Y and the other end edge portion 180 in the width direction Y in which the convex portion 181 and the concave portion 182 are formed are bonded by the adhesive S.

  According to the fourth embodiment described above, the fixing base 167 has a plurality of insertion holes 171 through which the screws V of the screws are inserted at intervals in the length direction X. As a guide, the adhesive S can be applied more accurately along the length direction X of the panel material 151. Therefore, the panel materials 151 can be bonded more firmly.

  Moreover, since the adhesive S is applied between the insertion hole 171 and the recess 170 in the application process, the entry of the adhesive S into the insertion hole 171 can be suppressed, and the panel members 151 are more firmly bonded to each other. can do.

  Next, a suspended ceiling construction method and suspended ceiling according to a fifth embodiment of the present invention will be described mainly with reference to FIGS. 1, 13, and 14 with a focus on differences from the first embodiment.

  In the fifth embodiment, the ceiling panel 12 attached to the plurality of field edges 25 of the suspended ceiling base 11 shown in FIG. 1 is configured by connecting a plurality of panel members 201 shown in FIG. The panel material 201 has a long plate shape that is long in a direction perpendicular to the paper surface of FIG. 13, and has a constant cross-sectional shape at all positions in the length direction X (direction perpendicular to the paper surface of FIG. 13). It is. Therefore, the width of the width direction Y orthogonal to the length direction X of the panel material 201 is constant at all positions in the length direction X, and the thickness direction orthogonal to both the length direction X and the width direction Y. (Height direction) The thickness of Z is constant at all positions in the length direction X.

  The panel material 201 includes a frame 202 formed by metal extrusion molding, a filler 203 made of a foam material held in the frame 202, and an aluminum vapor deposition sheet that covers an upper surface portion of the filler 203 that is not covered by the frame 202. And the like.

  The frame 202 includes a lower plate portion 210 that constitutes a lower end surface of the panel material 201, an intermediate plate portion 211 that extends vertically upward slightly from one edge of the lower plate portion 210 in the width direction Y, and a lower plate A side plate portion 212 extending vertically upward from one edge of the portion 210 in the width direction Y, and an upper plate portion 213 extending from the upper edge of the intermediate plate portion 211 to the inside and outside of the width direction Y. ing. The upper plate portion 213 extends outward in the width direction Y from the lower plate portion 210.

  A fixing in which the outer side of the upper plate part 213 in the width direction Y from the intermediate plate part 211, that is, the portion on the tip side protrudes outward in the width direction Y at one end edge 216 which is one side of the width direction Y of the panel material 201. Base 217 is provided. Further, the portion of the upper plate portion 213 and the lower plate portion 210 that align the positions in the width direction Y and the intermediate plate portion 211 are arranged in the width direction Y at one end edge 216 that is one side in the width direction Y of the panel material 201. It is the recessed part 220 (1st engaging part) dented inward. The recess 220 includes the inner side, that is, the base end side in the width direction Y of the fixed base 217. The recessed portion 220 is disposed below the fixed base 217, and the fixed base 217 and the recessed portion 220 are formed to extend in the length direction X at one end edge 216 in the width direction Y of the panel material 31. The outer portion in the width direction Y and the side plate portion 212 from the intermediate plate portion 211 of the lower plate portion 210 protrude outward in the width direction Y at one end edge portion 216 of the panel material 201.

  The frame 202 includes a side plate portion 226 that extends vertically upward from the other end edge of the lower plate portion 210 in the width direction Y, and an outer side that extends outward from the upper end portion of the side plate portion 226 in the width direction Y. It has the extended board part 227 and the upper extended board part 228 extended from the outer edge part of the width direction Y of the outward extended board part 227 to the perpendicular | vertical upward direction.

  The outwardly extending plate portion 227 and the upward extending plate portion 228 are convex portions 231 that protrude outward in the width direction Y at the other end edge portion 230 on the other side in the width direction Y of the panel material 201 (second Engaging portion). The convex portion 231 is formed to extend in the length direction X at the other end edge portion 230 in the width direction Y of the panel material 201. The convex portion 231 can be inserted into the concave portion 220 of the other panel material 201.

  The suspended ceiling 10 is formed by arranging a plurality of the above panel materials 201 on the suspended ceiling base 11 shown in FIG. 1, and at this time, the plurality of arranged panel materials 201 form the ceiling panel 12. To do.

  Next, the construction method of the suspended ceiling 10 of 5th Embodiment is demonstrated.

  The operator performs a fixing process similar to that in the first embodiment in which the preceding panel material 201 is attached to the lower surface of the field edge 25 of the assembled suspended ceiling base 11. In this fixing step, as shown in FIG. 14A, the fixing base 217 of the preceding panel material 201 (A) is in contact with the lower surface of the field edge 25 by screwing using screws V. Fix to the edge 25. The panel material 201 (A) is screwed to the corresponding edge 25 by screws V at a plurality of positions spaced in the length direction X, and the operator can connect these screws V in the width direction Y. Are arranged so that they are aligned.

  Next, as shown in FIG. 14 (b), the operator uses the caulking gun G to attach the adhesive to the one end edge 216 of the preceding panel material 201 (A) where the fixed base 217 and the recess 220 are formed. An application step of applying S is performed. Specifically, the adhesive S is continuously applied in the length direction X to the lower surface of the fixed base 217 closer to the tip than the recess 220. At this time, since the plurality of screws V are screwed with the positions in the width direction Y aligned, an adhesive is applied along a line connecting these screws V as marks. More specifically, as in the first embodiment, as shown in FIG. 14B, on the screw fixing line, that is, the arrangement line of the plurality of screws V, that is, on the line passing through the heads of all the screws V. The adhesive S is continuously applied to the surface.

  Next, as shown in FIGS. 14C and 14D, the operator engages the convex portion 231 of the succeeding panel member 201 (B) with the concave portion 220 of the preceding panel member 201 (A). An engaging step is performed. At that time, the following panel material 201 (B) is set to a forwardly rising posture with the convex portion 231 on the front side, and this convex portion 231 is connected to the adhesive S and the side plate portion 212 of the preceding panel material 201 (A). And then inserted into the recess 220. Thereafter, the succeeding panel member 201 (B) is rotated while being inserted, and the fixed base 217 (not shown in FIG. 14C) is brought into contact with the lower surface of the field edge 25. Then, the convex portion 231 of the succeeding panel member 201 (B) in a state of entering the concave portion 220 of the preceding panel member 201 (A) has its own weight and adhesive S as shown in FIG. Due to the repulsive force, the lower surface of the outwardly extending plate portion 227 comes into contact with the upper surface of the side plate portion 212 that is the lower surface of the concave portion 220 of the preceding panel material 201 (A), and the upper surface of the upwardly extending plate portion 228 is advanced. The panel material 201 (A) is engaged with the recess 220 in the vicinity of the lower surface of the fixed base 217 serving as the upper surface of the recess 220.

  During the above rotation of the subsequent panel member 201 (B), the convex portion 231 rotates while entering the concave portion 220 of the preceding panel member 201 (A), as shown in FIG. As described above, the upper surface of the outwardly extending plate portion 227 is brought into contact with the adhesive S and pressed upward. Therefore, in the state where the fixed base 217 (not shown in FIG. 3D) of the subsequent panel member 201 (B) is brought into contact with the lower surface of the field edge 25 after the rotation, the preceding panel member 201 (A) The adhesive S applied to the fixed base 217 and the screw V is connected between the lower surface of the fixed base 217 and the screw V and the upper surface of the convex portion 231 of the succeeding panel member 201 (B). It will be in the state which intervenes.

  Here, since the upward extending plate portion 228 of the convex portion 231 of the subsequent panel member 201 (B) extends upward from the outward extending plate portion 227, the subsequent panel member 201 (B). Even if it is pushed by the outwardly extending plate portion 227 and the adhesive S spreads in the width direction Y, the adhesive S can be prevented from exceeding the upper extending plate portion 228. Further, the convex portion 231 of the succeeding panel member 201 (B) contacts the lower surface of the outwardly extending plate portion 227 with the upper surface of the side plate portion 212 which is the lower surface of the concave portion 220 of the preceding panel member 201 (A). Therefore, even if the adhesive S exceeds the upwardly extending plate portion 228, the adhesive S can be prevented from passing through the gap between the side plate portion 212 and the convex portion 231.

  Next, an operator performs the fixing process similar to the preceding panel material 201 (A) with respect to the subsequent panel material 201 (B) (refer FIG. 14A). That is, the fixing base 217 of the succeeding panel member 201 (B) is fixed to the field edge 25 by screwing in a state where it is brought into contact with the lower surface of the field edge 25. Next, the panel material 201 (B) is used as the preceding panel material 201, and the next panel material 201 is further applied.

  As shown in FIG. 1, the operator repeatedly arranges the plurality of panel members 201 on the suspended ceiling base 11 to form the ceiling panel 12 by repeatedly performing the above fixing process, application process, and engagement process. As a result, the suspended ceiling 10 is formed.

  As shown in FIG. 14 (d), the lower surface of the fixed base 217 of the preceding panel member 201 (A) and the upper surface of the convex portion 231 of the succeeding panel member 201 (B) are connected between them. When the intervening adhesive S is cured, the adhesive S adheres the fixed base 217 and the convex portion 231 and binds them together.

  In the construction method of the fifth embodiment described above, the fixing step shown in FIG. 14 (a) and the engaging step shown in FIGS. 14 (c) and 14 (d) include the coating step shown in FIG. 14 (b). In the coating process, the succeeding panel material 201 (A) is followed by the one end edge 216 in the width direction Y in which the fixed base 217 and the recess 220 are formed. The adhesive S for adhering the other end edge portion 230 in the width direction Y in which the convex portion 231 of 201 (B) is formed is applied.

  Further, in the suspended ceiling 10 constructed by the construction method of the fifth embodiment described above, the fixing base 217 of each of the plurality of panel materials 201 is fixed to the field edge 25 of the suspended ceiling base 11, and the adjacent panel material 201 and The panel members 201 engage the concave portion 220 and the convex portion 231, the one end edge 216 in the width direction Y in which the fixed base 217 and the concave portion 220 are formed, and the width direction Y in which the convex portion 231 is formed. The other end edge portion 230 is bonded with the adhesive S.

DESCRIPTION OF SYMBOLS 10 Suspended ceiling 11 Suspended ceiling base 12 Ceiling panel 31,101,151,201 Panel material 48,118,166,216 One end edge part 50,120,167,217 Fixed base 52 Recessed part (1st engaging part)
58, 130, 180, 230 Other end edge portion 59 Convex portion (second engaging portion)
122 recess (first engaging portion, first recess)
123 convex portion (first engaging portion, first convex portion)
127 Outer extending upper plate part (second engaging part, second convex part)
132 Concave portion (second engaging portion, second concave portion)
133 ridge part 162 outer side extension board part (1st engaging part, 1st convex part)
170 Concave portion (first engaging portion, first concave portion)
171 Insertion hole 181 Convex part (2nd engaging part, 2nd convex part)
182 recess (second engaging portion, second recess)
220 Concave portion (first engaging portion)
231 Convex part (second engaging part)
S Adhesive V Screw

Claims (9)

A fixed base and a first engagement portion disposed below the fixed base are formed to extend in the length direction at one end edge on one side in the width direction, and second on the other end edge on the other side in the width direction. Prepare a plurality of panel materials formed by extending the engaging portion in the length direction,
A fixing step of fixing the fixing base of the preceding panel material to a suspended ceiling base;
An engagement step of engaging the first engagement portion of the preceding panel material with the second engagement portion of the subsequent panel material;
A method for constructing a suspended ceiling in which a plurality of panel materials are arranged alternately on the suspended ceiling foundation to form a ceiling panel,
Between the fixing step and the engaging step, an application step of applying an adhesive that adheres them to the one end edge of the preceding panel member or the other end edge of the succeeding panel member is performed. Suspended ceiling construction method characterized by this. The first engagement portion is a recess that is recessed inward in the width direction including the proximal end side of the fixed base,
The second engaging portion is a convex portion that protrudes outward in the width direction and can be inserted into the concave portion,
2. The suspended ceiling construction method according to claim 1, wherein, in the application step, an adhesive is applied to a lower surface of the preceding panel member on the tip side of the recessed portion of the fixed base. In the fixing step, the front end side of the recessed portion of the fixed base of the preceding panel material will be screwed at a plurality of locations at intervals in the length direction to the suspended ceiling base,
3. The suspended ceiling construction method according to claim 2, wherein in the applying step, an adhesive is applied along or on the line of the screwing. The first engagement portion is a recess that is recessed inward in the width direction including the proximal end side of the fixed base,
The second engaging portion is a convex portion that protrudes outward in the width direction and can be inserted into the concave portion,
The suspension ceiling construction method according to claim 1, wherein, in the application step, an adhesive is applied to an upper surface of the convex portion of the subsequent panel material. The first engaging portion includes a first concave portion including a proximal end side of the fixed base and recessed inward in the width direction, and a first convex portion protruding outward in the width direction below the first concave portion. And
The second engaging portion protrudes outward in the width direction and can be inserted into the first recess, and the second engagement portion is recessed inward in the width direction and the first protrusion can be inserted. 2 recesses,
The suspension ceiling construction method according to claim 1, wherein, in the application step, an adhesive is applied to the opening of the first recess of the preceding panel material. A suspended ceiling base,
A fixed base and a first engagement portion disposed below the fixed base are formed to extend in the length direction at one end edge on one side in the width direction, and second on the other end edge on the other side in the width direction. A ceiling panel having a plurality of panel members formed by extending the engaging portion in the length direction;
A suspended ceiling comprising
The plurality of panel materials are:
Each of the fixed bases is fixed to the suspended ceiling foundation,
Adjacent panel members engage the first engagement portion and the second engagement portion, and the one end edge portion and the other end edge portion are bonded with an adhesive. Suspended ceiling. The first engagement portion is a recess that is recessed inward in the width direction including the proximal end side of the fixed base,
The second engaging portion is a convex portion that protrudes outward in the width direction and can be inserted into the concave portion,
The suspended ceiling according to claim 6, wherein a lower surface of the fixed base and an upper surface of the convex portion are bonded with an adhesive. The first engaging portion includes a first concave portion including a proximal end side of the fixed base and recessed inward in the width direction, and a first convex portion protruding outward in the width direction below the first concave portion. And
The second engaging portion protrudes outward in the width direction and can be inserted into the first recess, and the second engagement portion is recessed inward in the width direction and the first protrusion can be inserted. 2 recesses,
The suspended ceiling according to claim 6, wherein the first concave portion and the second convex portion are bonded with an adhesive.   A protrusion that protrudes from the bottom surface of the second recess and that abuts against a top surface of the first protrusion when inserted extends in the length direction. Item 9. The suspended ceiling according to item 8.

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