JP2016044459A - Hanging ceiling structure and metal fitting thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hanging ceiling structure of higher seismic resistance than conventional structures.SOLUTION: A hanging ceiling structure of the present invention includes a square pipe ceiling joist receiver 1 held by a hanger fixed on a hanging bolt, a ceiling joist 2 intersecting with the ceiling joist receiver 1, and a clip 10 fixing the ceiling joist 2 on the ceiling joist receiver 1. The clip 10 includes a hook-shaped holding plate part 12 extending upward from an engaged part with the ceiling joist 2, and a tightening plate part 13 extending upward from a tip of the holding plate part 12. An inverted T-shaped clip spacer 20 constituted of a bottom surface plate part and a standing plate part is disposed between the tightening plate parts 13, and the tightening plate parts 13 are tightened with the standing plate part in between. A clip stopper 30 is fixed on the ceiling joist 2 with a fixing screw S for use, the clip stopper including two arm parts 31 located outside of the clip 10 that holds the ceiling joist receiver 1, as well as engaged parts 32, 33 extending downward from both ends of each of the arm parts 31, where the engaged parts 32 on one side are continuous as one.SELECTED DRAWING: Figure 2

Description

  The technology related to the seismic structure of the suspended ceiling is disclosed below.

  In office buildings and other buildings, a ceiling decorative panel is suspended from an upper slab by a structure called a suspended ceiling. The suspended ceiling is composed of various metal fittings. For example, as disclosed in Patent Document 1, a hanger is fixed to the tip of a hanging bolt that is fixed to a structural material such as a steel beam and hangs down. It is held in. Then, the field edge of the M bar extending in the crossing direction is fixed to the field edge receiver using a clip. A decorative board will be fixed to this edge. Recently, as can be seen in Patent Document 2, a seismic reinforcement structure is also used in which a brace (diagonal reinforcing material) is connected between a field receiver and a suspension bolt using a brace holder.

JP-A-10-159242 JP 2014-080803 A

  Because of recent accidents where suspended ceilings have fallen due to large earthquakes, further improvement of earthquake resistance is desired for suspended ceilings. In view of this point, the present invention proposes a suspended ceiling structure and a metal fitting for the structure, which have higher earthquake resistance than conventional ones.

The suspended ceiling structure proposed for this problem is a hanging bolt fixed to a building structural material and hung, a hanger fixed to the hanging bolt, and a corner pipe field retainer held by the hanger, A field edge extending in a direction intersecting the field edge receiver, and a clip for fixing the field edge to the field edge receiver.
The suspended ceiling structure includes a brace of a square pipe disposed between the field edge holder held by the hanger and the suspension bolt, a bolt-side brace holder that fixes the brace to the suspension bolt, and the brace. And a field edge brace holder for fixing the element to the field edge receiver. In the brace, a reinforce member having a hat-shaped cross section that extends in the axial direction of the brace can be put on a portion between both the brace holders on the bolt side and the field edge side. Further, a nut screwed into the suspension bolt can be brought into contact with the bolt side brace holder from below.
In addition, the suspended ceiling structure further includes a reinforcing material for a square pipe extending in a direction intersecting the field edge receiver, and a reinforcing material fixing bracket for fixing the reinforcement material to the field edge receiver. You can also. The reinforcing material fixing bracket includes a field edge receiving fixing plate portion that extends along the field edge receiving member and has a through hole for passing a fixing screw for fixing to the field edge receiving member, and the field edge receiving fixing plate portion. A reinforcing material fixing plate portion having a through hole extending from the side edge of the reinforcing material along the extending direction of the reinforcing material and passing a fixing screw for fixing the reinforcing material, and a bowl shape from the upper edge of the reinforcing material fixing plate portion It is possible to provide a reinforcing member fixing metal fitting having an engaging portion that extends to the engaging member and engages with the reinforcing member.

As one aspect of the hanger suitable for the suspended ceiling structure, a holding portion configured in a U-shape for receiving a field edge receiver is provided, and the bolt fixing portion extending upward from one side wall portion of the holding portion is the holding portion. A main piece bent to the side of the other side wall portion of the portion, and a fixing plate portion fixed to the other side wall portion of the holding portion in the main piece, and extended upward from the fixing plate portion A hanger comprising an auxiliary piece bent so that a bolt fixing portion overlaps the bolt fixing portion of the main piece is proposed.
Or as a hanger which concerns on another aspect, it is comprised in the L-shape with the side plate part bent and extended upwards from the bottom plate part, the bolt which supported two surfaces of a field edge receiver, and extended upwards from the said side plate part The fixing portion supports another surface of the field receiver by a main piece bent in the same direction as the bottom plate portion, and a side plate portion pivotally attached to the bottom plate portion of the main piece, and from the side plate portion A hanger comprising an auxiliary piece bent so that a bolt fixing portion extending upward overlaps the bolt fixing portion of the main piece is proposed.

  As one aspect of the bolt-side brace holder suitable for the suspension ceiling structure, a curved plate portion curved so as to wrap the suspension bolt, and two clamp plate portions extending from the curved plate portion and holding the brace diagonally downward from both sides And a through hole opened in the clamp plate portion for passing a fixing screw for fixing the clamped brace, and a boundary portion between the curved plate portion and the clamp plate portion, penetrating from one of the clamp plate portions to the other And a bolt-side brace holder provided with a fastening tool for fastening the two clamp plate portions to each other. The through hole can be formed at a position where one of the clamp plate portions and the other clamp plate portion do not overlap each other (the center axes of the through holes do not coincide with each other).

As one aspect of the field edge brace holder suitable for the suspended ceiling structure, two clamp plates that clamp the brace upward and obliquely from both sides, and also clamp the field receiver positioned below the brace from both sides, and the clamp Proposed a field side brace holder with a connecting part that connects the plate part on the upper side of the brace, and a through hole opened in the clamp plate part for passing the clamped brace and fixing screw that fixes the field receiver To do.
As a field edge side brace holder according to another aspect, two clamp plate parts that hold the brace obliquely upward from both sides and also hold a field edge receiver positioned below the brace from both sides, and the clamp plate part to the field edge Proposed is a field edge side brace holder comprising a connection part to be connected on the lower side of the receiver, and a clamped brace and a through hole opened in the clamp plate part for passing a fixing screw for fixing the field edge receiver.
Further, as a field edge brace holder according to another embodiment, two clamp plate parts that hold the brace obliquely upward from both sides and also hold the field edge receiver positioned below the brace from both sides, and the clamp plate part, A connecting portion that is connected in a space formed between the upward slanted brace and the field edge receiver, and a through-hole that is opened in the clamp plate portion for passing the clamped brace and the fixing screw that fixes the field edge receiver. Propose a field-side brace holder with
Any of the through holes can be formed at a position where one of the clamp plate portions and the other of the clamp plate portions do not overlap each other (the center axes of the through holes do not coincide).

  The suspended ceiling structure includes a locking portion that is locked to a field edge, a bowl-shaped clamping plate portion that extends upward from the locking portion, and a clamping plate portion that extends upward from the tip of the clamping plate portion. , The square plate's field edge receivers are sandwiched from both sides by the two clips locked to the field edges, and the fastening plate portions of these clips are fastened together with bolts to the field edge receivers. Is preferably held by the holding plate portion. When the clip is clamped by the clip, the length of the hook-shaped clamping plate part is not enough, and there is a gap between the clamping plate parts (that is, the width of the field guard is a little wide) Includes an inverted T-shaped clip spacer comprising a bottom plate portion and an upright plate portion standing upright from the bottom plate portion, and the clamping plate sandwiching the upright plate portion therebetween. Tighten the part to eliminate the gap.

  Moreover, after fixing a field edge to a field edge receiver using this clip, a clip stopper can be used so that the position of the clip with respect to the field edge does not change. The clip stopper has two arms that are parallel to each other and in contact with the outside of the two clips sandwiching the field edge holder, and have a length that crosses the field edge, and extends downward from both ends of each arm. A locking portion at one end of each of the two arm portions connected to one, at least the locking portion connected to the one or the other end of the arm portion The clip stopper is used by fixing the locking part to the field edge with a fixing screw.

  The suspended ceiling structure according to the above proposal has a closed cross section with a square pipe and has a high strength against bending and buckling, so compared to a conventional suspended ceiling structure using a groove-shaped field edge receiver, Seismic strength is improved. Further, the seismic strength can be further improved by adding the brace of the square pipe or the reinforcing material of the square pipe. In addition, by covering the brace with a cross-sectional hat-shaped reinforcement member, the heel portion acts as a reinforcing rib against bending, so that the seismic strength can be further improved. Furthermore, with regard to the brace holder that fixes the brace to the suspension bolt, if the nut that is screwed onto the suspension bolt is brought into contact with the bottom to fix the position, the displacement of the brace holder is prevented, so that the seismic strength Can be further improved.

  In the hanger according to the above proposal, the bolt fixing portions of the main piece and the auxiliary piece are bent inward, and the suspension bolt is positioned directly above the field edge support supported in the hanger. In the conventional hanger, the bolt fixing portion is bent outward (see, for example, FIG. 3 and FIG. 4 of Patent Document 1), so to speak, it is a cantilever beam bent outward, and is supported by the field edge receiver. And the suspension bolt are in an offset state. For this reason, the hanger is easily deformed when an external force is applied. When the hanger is deformed, the state of transmission of the force to the suspension bolt changes, so that the suspension bolt is also bent. In other words, earthquake resistance is low. On the other hand, according to the hanger according to the above proposal, the field receiver is supported on the axial extension of the suspension bolt, and the closed section is formed by the main piece and the auxiliary piece, so that the hanger itself is deformed. This makes it difficult to bend the suspension bolt. Therefore, the earthquake resistance is improved.

  The bolt-side brace holder according to the above-mentioned proposal is, for example, a curved plate portion and a clamp by bending a metal plate having a plate width of about 5 cm to 10 cm at the center and bending the metal plate to match the diameter of the suspension bolt. Since the plate portion can be formed, the cost is low. And, the clamp plate part sandwiches and fixes the brace of the square pipe from both sides, and the curved plate part surrounds and suspends the suspension bolt, so compared to the conventional holder that fixes the brace of the channel shape member from one side And fixing is strong. Furthermore, since the curved plate portion and the two clamp plate portions can be formed from a single plate, the strength of the holder itself is high. Therefore, the earthquake resistance is improved. If the through holes of the clamp plate part are set so as not to overlap each other, the ends of the fixing screws do not collide with each other when construction is performed.

  In the field edge brace holder according to the above proposal, for example, a metal plate having a plate width of about 5 cm is bent at the center so as to match the width of the brace and the field edge receiver to form a connecting portion, and a clamp plate portion extending therefrom is formed. Can be folded or formed from an H-shaped metal plate material comprising two clamp plate portions arranged in parallel with a plate width of about 5 cm and a connecting portion connecting them, so that the cost is low. . Since the clamp plate portion sandwiches and fixes the square pipe brace and the edge receiving from both sides, the fixing is stronger than the conventional holder that fixes the brace of the groove member from one side. Furthermore, since the connecting portion and the two clamp plate portions can be formed from a single plate, the strength of the holder itself is high. Therefore, the earthquake resistance is improved. If the through holes of the clamp plate part are set so as not to overlap each other, the ends of the fixing screws do not collide with each other when construction is performed.

  According to the clip spacer according to the above proposal, by substantially eliminating the gap between the clamping plate portions of the clip, the clamping plate portion is less likely to be deformed than when the gap is left open. The connection strength with the receiver is improved. Therefore, the earthquake resistance is improved.

  Since the clip stopper according to the above proposal is an integrated type with one end of the locking part connected, it is fitted with one touch so that the arm part is positioned on both sides of the clip, and the locking part on one side is fixed with a fixing screw. Simply install it. Stops can be provided on both outer sides of the clip at once and can be fixed so that the position of the clip relative to the field edge does not change to either side. Therefore, the earthquake resistance is improved.

The figure which shows the clip and clip spacer before an assembly | attachment. The figure which shows the clip and clip stopper after an assembly | attachment. The figure which showed the clip which fixed the field edge to the field edge receiver, and the hanger which adjoined this clip and was fixed to the suspension bolt and hold | maintained the field edge receiver. The figure which shows the detail of the hanger of FIG. The figure which shows the main piece of the hanger of FIG. 4 is a diagram showing an auxiliary piece of the hanger. The figure which shows the hanger of another example. The figure which shows the brace arrange | positioned between a field receiver and a suspension bolt, and the brace holder which has fixed this brace. The figure which shows the field edge side brace holder of FIG. The figure which shows the bolt side brace holder of FIG. The figure which shows the reinforcement member which covers a brace. The figure which shows the reinforcing material which cross | intersects and extends a field edge receptacle, and the reinforcing material fixing metal fixture which fixes this reinforcement material to a field edge receptacle seeing from the side of a field edge receptacle. The figure which shows the reinforcement material and reinforcement material fixing metal fitting of FIG. 12 seeing from the side of a reinforcement material. The figure which shows the reinforcing material and reinforcing material fixing metal fitting of FIG. 12 seen from the top. The figure which shows the other example of the reinforcing material fixing bracket which fixes a reinforcing material to a field edge receiver seeing from the side of a field edge receiver. The figure which shows the reinforcing material fixing metal fitting of FIG. 15 seeing from the side of a reinforcing material. The figure which shows another example of the reinforcing material fixing metal fixture which fixes a reinforcing material to a field edge receiver from the side of a field edge receiver. The figure which shows the reinforcing material fixing metal fitting of FIG. 17 seeing from the side of a reinforcing material.

  Embodiments of the suspended ceiling structure according to the present invention will be described. The present embodiment is applied to the suspended ceiling shown in FIG. 9 of Patent Document 1 and FIGS. 1 and 2 of Patent Document 2. The suspended ceiling structure includes a hanging bolt fixed to a structural material of a building, a hanger fixed to the hanging bolt, a field edge holder held by the hanger, and a direction intersecting the field edge receiver. An extending field edge and a clip for fixing the field edge to the field edge receiver are configured.

  1 and 2 show a clip for fixing the field edge to the field edge receiver. The field edge receiver 1 in the illustrated example is a square pipe having a cross section height (long side) of 38 mm, a width (short side) of 13 mm, and a wall thickness of 1.6 mm, and has a closed cross section. By using a square pipe to provide a closed cross section to the edge receiver 1 that is hung on the suspension bolt, the strength against bending and buckling is increased, and a conventional suspended ceiling structure that uses a groove-shaped field receiver ( Compared to Patent Documents 1 and 2), the seismic strength is improved. Other dimensions of each pipe can be 34 × 12 × 1.6 (mm), 36 × 12 × 1.6 (mm), 32 × 14 × 1.6 (mm), etc. In the experiment, the above 38 × 13 × 1.6 (mm) was optimal. This square pipe with the dimensions of 38 x 13 x 1.6 (mm) is used as the edge holder 1, and the suspended ceiling structure using each member described below makes the seismic performance approximately double the seismic strength specified in JIS. Have succeeded in getting.

  The clip 10 that fixes the M-bar field edge 2 to the square-pipe field edge receiver 1 includes an engaging portion 11 that engages with a folded portion 2 a extending from the end edge of the field edge 2. Both ends of the locking portion 11 are bent upward and are locked to the folded portion 2 a of the field edge 2. A clamping plate portion 12 extends upward from the locking portion 11, and the clamping plate portion 12 has a bowl shape in which a tip portion is bent at a substantially right angle. Then, the clamping plate portion 13 extends upward from the bent tip of the clamping plate portion 12. Two clips 10 are used, and the field edge receiver 1 is sandwiched from both sides by the two clips 10 in which the engagement portion 11 is engaged with the field edge 2. Then, the bolts B are fastened to each other through the holes of the fastening plate portion 13 of the clip 10, and the field receiver 1 is held by the holding plate portion 12. Thereafter, as shown in FIG. 2, the fixing screw S is tightened through the holding plate portion 12 to secure the fixing (even if the hole for the fixing screw S is formed in the holding plate portion 12). Good). About the volt | bolt B, you may tighten with a nut from the opposite side inserted, and you may cut the screw in the hole of the clamping board part 13 in one of the clips 10 used as a pair.

  When the edge holder 1 is clamped by the clip 10, the width of the edge receiver 1 is wide, and the length of the hook-shaped holding plate portion 12 (the protruding amount of the hook-shaped tip portion) is insufficient. There is a case where a gap is formed between 13. When the fastening plate portions 13 do not come into contact with each other in this way, the clip spacer 20 is disposed between the fastening plate portions 13 to eliminate the gap. The clip spacer 20 has an inverted T shape including a bottom plate portion 21 and an upright plate portion 22 standing upright from the bottom plate portion 21, and the upright plate portion 22 is sandwiched between the fastening plate portions 13. By virtually eliminating the gap between the clamping plate portions 13, the clamping plate portion 13 is less likely to be deformed than when the gap remains open, and the connection strength between the field edge 2 and the field edge receiver 1 is improved. Is done. Therefore, the earthquake resistance is improved.

  After the field edge 2 is fixed to the field edge receiver 1 using the clip 10, the clip stopper 30 is used so that the position of the clip 10 with respect to the field edge 2 does not change, that is, the clip 10 does not slide. (FIG. 2). The clip stopper 30 includes two arm portions 31 arranged in parallel at a distance W (that is, the width of the field edge receiver 1 + the thickness of the two clips 10) in contact with the outside of the two clips 20 sandwiching the field edge receiver 1. These arm portions 31 have a length that crosses the field edge 2. Locking portions 32 and 33 extend downward from both ends of the arm portion 31. Of these, the locking portion 32 at one end of the arm portion 31 is connected to one, and the locking portion at the other end. 33 is independent. In the clip stopper 30 formed in this way, the arm portions 31 are inserted into the both sides of the clip 10 from the lower side of the field receiver 1 with the unconnected locking portion 33 first, and the locking portions 32 at both ends are inserted. , 33 are locked to the field edge 2, and the one locking part 32 is fixed to the field edge 2 by the fixing screw S (one or more holes for the fixing screw S are formed in the locking part 32. It may be formed). The fixing screw S can also be applied to the other locking portion 33.

  Since the clip stopper 30 in this example is an integrated type in which the locking portion 32 at one end is connected to one, the clip portion 30 is fitted with one touch so that the arm portions 31 are positioned on both sides of the clip 10, respectively. By simply stopping the stop 32 (or 33) with the fixing screw S, it can be easily attached. The stoppers 30 can be provided on both outer sides of the clip 10 at a time, and can be fixed so that the position of the clip 10 with respect to the field edge 2 does not change to either side. Therefore, the earthquake resistance is improved.

  The field receiver 1 that supports the field edge 2 through the clip 10 as described above is held by the hanger 40 shown in FIG. The hanger 40 is fixed by a nut N to a suspension bolt HB hanging from a slab or the like on the upper floor. The suspension bolt HB in this example has a diameter of 12 mm and is thicker than a suspension bolt with a diameter of 9 mm that is normally used.

Details of the hanger 40 are shown in FIGS.
The hanger 40 in this example includes two parts, a main piece 41 and an auxiliary piece 42. The main piece 41 has a holding portion 41a for receiving the field receiver 1, and this holding portion 41a has a bottom portion 41a-A and side wall portions 41a-B extending upward from both side edges of the bottom portion 41a-A. And a side wall portion 41a-C. A bolt fixing portion 41b extends upward from one side wall portion 41a-B of the holding portion 41a, and the bolt fixing portion 41b is bent substantially perpendicularly to the other side wall portion 41a-C side of the holding portion 41a. doing. More specifically, the bolt fixing portion 41b includes an upward extending portion 41b-A that bulges outward to receive the nut N on the inside and extends upward, and is substantially inward from the upward extending portion 41b-A. A bent portion 41b-B which is bent at a right angle and is substantially parallel to the bottom portion 41a-A of the holding portion 41a. A through hole 43 through which the suspension bolt HB is passed is formed in the bent portion 41b-B. In the holding portion 41a, a through hole 44b for the fixing screw S is provided in one side wall portion 41a-B, and a through hole 44c for the fixing screw S is provided in the other side wall portion 41a-C. 44c are formed so that their formation positions do not overlap each other. That is, as shown in FIG. 4, when the fixing screws S are screwed in from both sides, the fixing screws S do not collide with each other. Further, a through hole 45c through which a bolt B for fastening the side wall portion 41a-B and the side wall portion 41a-C of the holding portion 41a in which the field receiver 1 is inserted is provided in the other side wall portion 41a-C. A screw hole 45b that engages with the bolt B is provided in one of the side wall portions 41a-B. The bolt B may be tightened with a nut from the opposite side (not screwed into the screw hole 45b).

  The auxiliary piece 42 has a fixing plate portion 42a fixed to the other side wall portion 41a-C of the holding portion 41a in the main piece 41, and a bolt fixing portion 42b extends upward from the fixing plate portion 42a. The bolt fixing portion 42b is bent substantially at a right angle so as to overlap the bent portion 41b-B of the bolt fixing portion 41b of the main piece 41. More specifically, the bolt fixing portion 42b includes an upward extending portion 42b-A that bulges outward to receive the nut N on the inside and extends upward, and is substantially inward from the upward extending portion 42b-A. A bent portion 42b-B which is bent at a right angle and overlaps with the bent portion 41b-B in the main piece 41. A U-shaped opening 46 through which the suspension bolt HB is passed is formed in the bent portion 42b-B. The fixing plate portion 42a is provided with a through hole 47 corresponding to the through hole 44c of the other side wall portion 41a-C in the main piece 41 and a through hole 48 corresponding to the through hole 45c. Therefore, the auxiliary piece 42 is fixed to the main piece 41 and the field receiver 1 by the bolt B and the fixing screw S. Since the U-shaped opening 46 is formed in the bent portion 42b-B, the auxiliary piece 42 can be assembled after the main piece 41 is attached to the suspension bolt HB.

  According to the hanger 40, the bolt fixing portions 41b and 42b of the assembled main piece 41 and auxiliary piece 42 are bent inward and overlapped (bent portions 41b-B and 42b-B), and this overlapped bolt fixing portion 41b. , 42b is sandwiched from above and below by a nut N screwed to a suspension bolt HB, whereby the hanger 40 that holds the field receiver 1 is fixed. Therefore, the suspension bolt HB is positioned directly above the field receiver 1 supported in the hanger 40 (FIG. 4). As described above, compared to the conventional hanger in which the supported field receiver and the suspended bolt are offset, according to the hanger 40 of this example, the field receiver 1 is supported on the extension of the axis of the suspension bolt HB. In addition, since the closed section is formed by the main piece 41 and the auxiliary piece 42, the hanger 40 itself is not easily deformed, and accordingly, the suspension bolt HB is also difficult to bend. Therefore, the earthquake resistance is improved.

Another example hanger 40 'is shown in FIG. The hanger 40 ′ is an example in which the auxiliary piece 42 ′ is opened and closed to improve workability.
The main piece 41 ′ of the hanger 40 ′ shown in FIG. 7 is configured in an L shape in which a portion holding the edge receiver 1 has a side plate portion 41′b that is bent from the bottom plate portion 41′a and extends upward. Thus, the bottom and side surfaces of the field edge receiver 1 are supported. The bottom plate portion 41 ′ a is formed so as to protrude to the opposite side longer than the field receiver 1. From the side plate portion 41′b, a bolt fixing portion 41′c similar to the bolt fixing portion 41b of the example shown in FIGS. 4 and 5 extends upward, and is substantially in the same direction as the bottom plate portion 41′a, that is, inward. It is bent at a right angle. That is, the bolt fixing portion 41′c is composed of an upwardly extending portion 41′c-A and a bent portion 41′c-B having the same shape as the example shown in FIGS. The auxiliary piece 42 ′ combined with the main piece 41 ′ includes a side plate portion 42 ′ a pivotally attached to the bottom plate portion 41 ′ of the main piece 41 ′. One surface, that is, a side surface opposite to the main piece 41 'is abutted and supported. From the side plate portion 42′a, a bolt fixing portion 42′b similar to the bolt fixing portion 42b of the example shown in FIGS. 4 and 6 extends upward, and is connected to the bolt fixing portion 41′c-B of the main piece 41 ′. It is bent to overlap. The bolt fixing portion 41′c-B of the auxiliary piece 42 ′ is composed of an upward extending portion 42′b-A and a bent portion 42′b-B having the same shape as the example shown in FIG. 4 and FIG. The portion 42′b-B overlaps the bent portion 41′c-B of the main piece 41 ′. In the main piece 41 ′ and the auxiliary piece 42 ′ in this example, the same through hole, screw hole, and U-shaped opening as those in the example shown in FIGS. 4 to 6 are formed.

  In the bottom plate portion 41 ′ a of the main piece 41 ′, a slot is formed in parallel with the field receiver 1 at a portion protruding to the opposite side of the field receiver 1. An engagement portion 42 ′ c bent into a hook shape that engages through the slot extends from the lower end edge of the side plate portion 42 ′ a of the auxiliary piece 42 ′. By this engagement, the lower end of the side plate portion 42 ′ a It is pivotally attached to the bottom plate portion 41'a, and the auxiliary piece 42 'can be rotated as a whole with respect to the main piece 41'. That is, when the field edge receiver 1 and the hanger 40 ′ are assembled, the auxiliary piece 42 ′ is opened as shown in FIG. 7B, the field edge receiver 1 is placed in the main piece 41 ′, and the auxiliary piece 42 'Can be rotated to close to the state shown in FIG. 7A. By this construction method, the field receiver 1 and the hanger 40 'can be assembled more easily.

  In the suspended ceiling structure exemplified here, a brace 50 of a square pipe is arranged between the field receiver 1 held by the hanger 40 (40 ′) and the suspension bolt HB as a reinforcing material that further improves the seismic strength. Can be added. The dimensions of the square pipe of the brace 50 are the same as the dimensions of the field receiver 1 described above. One end of the brace 50 is fixed to the field edge receiver 1 by a field edge side brace holder 51, and the other end is fixed to the suspension bolt HB by a bolt side brace holder 52.

FIG. 9 shows three examples of the field-side brace holder 51 suitable for the suspended ceiling structure of this example.
The brace holder 51 shown in FIG. 9A includes two clamp plate portions 51a that hold the brace 50 obliquely upward from both sides and have a length that also holds the edge receiver 1 positioned below the brace 50 from both sides. These clamp plate parts 51 a are connected to each other by a connecting part 51 b on the upper side of the brace 50. Therefore, it is formed in an inverted U shape as a whole. The connecting portion 51b may be inclined according to the arrangement angle (45 degrees or the like) of the brace 50. Each clamp plate portion 51a has a plurality of through-holes 51c through which the brace 50 sandwiched inside and the fixing screw S for fixing the field receiver 1 are passed. In the case of this example, the through hole 51c of one clamp plate portion 51a and the through hole 51c of the other clamp plate portion 51c are provided at positions that do not overlap each other (positions at which the center axes of the holes do not coincide). This prevents the fixing screws S from colliding with each other when the fixing screws S are screwed in from both sides of the brace 50 and the field receiver 1.

  The brace holder 51 shown in FIG. 9B includes two clamp plate portions 51a having a length for holding the brace 50 obliquely upward from both sides and having the length for holding the edge receiver 1 positioned below the brace 50 from both sides, These clamp plate parts 51a are connected by a connecting part 51b on the lower side of the field receiver 1, and are configured in a U shape as a whole. Each clamp plate portion 51a is formed with a through hole 51c similar to FIG. 9A.

  The brace holder 51 of the example shown in FIGS. 9A and 9B can be formed with sufficient strength by bending a single metal plate. That is, for example, a metal plate having a plate width of about 5 cm can be bent at the center so as to match the width of the brace 50 and the edge receiver 1 to form the connecting portion 51b, and two clamp plate portions 51a extending therefrom can be formed. So it is low cost. The clamp plate portion 51a sandwiches and fixes the square pipe brace 50 and the field edge receiver 1 from both sides, so that the fixing is stronger than a conventional holder that fixes the brace of the groove member from one side. Furthermore, since the connecting portion 51b and the two clamp plate portions 51a can be formed from a single plate, the strength of the holder itself is high. Therefore, the earthquake resistance is improved.

  The brace holder 51 shown in FIG. 9C also includes two clamp plate portions 51a that hold the brace 50 obliquely upward from both sides and have a length that also holds the edge receiver 1 positioned below the brace 50 from both sides. The connecting portion 51b is provided at an intermediate position in the vertical length direction of the clamp plate portion 51a so as to be connected in a space formed between the upward slanted brace 50 and the field edge receiver 1. The brace holder 51 of this example can be formed, for example, by bending an H-shaped metal plate. Each clamp plate portion 51a is formed with a through hole 51c similar to FIG. 9A.

  The brace holder 51 of the example shown in FIG. 9C is also formed by bending from one H-shaped metal plate material composed of two clamp plate portions 51a arranged in parallel with a plate width of, for example, about 5 cm and a connecting portion 51b connecting them. This has the same advantage as the example shown in FIGS. 9A and 9B. The position of the connecting portion 51b shown in the example of FIG. 9C is most preferable among the three examples in terms of workability with respect to the brace 50 and the field edge receiver 1 that are assembled obliquely.

An example of the bolt side brace holder 52 in FIG. 8 is shown in FIG.
The brace holder 52 of this example includes a curved plate portion 52a that is curved so as to wrap the suspension bolt HB, and two clamp plate portions 52b that extend from both ends of the curved plate portion 52a and sandwich the brace 50 obliquely downward from both sides. . A large number of through holes 52c are opened in the clamp plate portion 52b in order to pass the fixing screw S for fixing the clamped brace 50. The through hole 52c is formed at a position where the one clamp plate portion 52b and the other clamp plate portion 52b do not overlap each other, as in the case of the above-mentioned field edge side brace holder 51.

  The curved plate portion 52a curved in a U shape so as to wrap the suspension bolt HB corresponds to the diameter (12 mm in this example) of the suspension bolt HB from the bottom of the U shape to the tip edge. In the vicinity of the edge, that is, at the boundary portion 52d between the curved plate portion 52a and the clamp plate portion 52b, the bolt B is disposed as a fastening tool. The bolt B penetrates from one side of the clamp plate portion 52b to the other, and the nut N is screwed to the opposite side to tighten the two clamp plate portions 52b against each other.

  The brace holder 52 of this example is formed by bending a metal plate having a plate width of about 5 cm to 10 cm at the center and bending the metal plate to match the diameter of the suspension bolt HB, thereby forming the curved plate portions 52a and 2b. Since the two clamp plate portions 52b can be formed, the cost is low. In addition, each clamp plate 52b sandwiches and fixes the brace 50 of the square pipe from both sides, and the curved plate 52a surrounds and wraps the suspension bolt, so that the grooved brace is fixed from one side. Fixing is stronger than the holder. Furthermore, since the curved plate portion 52a and the two clamp plate portions 52b can be formed from a single plate, the strength of the holder itself is high. Therefore, the earthquake resistance is improved.

  A nut N screwed to the suspension bolt HB can be brought into contact with the bolt-side brace holder 52 from below (FIG. 8). Since the brace holder 52 is fixed in position by the nut N and the positional deviation of the brace holder 52 is prevented, the seismic strength can be further improved.

  In such a brace 50, the reinforcement member 53 shown in FIG. 11 can be put on the portion between both the brace holders 51 and 52 on the bolt side and the field edge side at both ends. The reinforcement member 53 has a cross-sectional hat shape extending in the axial direction of the brace 50. By covering and integrating the reinforcement member 53, the flange portion 53a of the reinforcement member 53 extends on the side surface of the brace 50, and the flange portion 53a serves as a reinforcing rib against bending. Can be improved. The reinforcement member 53 placed on the brace 50 is fixed and integrated by a fixing screw S or the like.

  The suspended ceiling structure of this example is a structure that further includes a reinforcing member 60 of a square pipe that extends in a direction intersecting the field receiver 1 and can further improve the seismic strength. The dimensions of the square pipe forming the reinforcing member 60 are the same as the dimensions of the above-described field receiver 1. The reinforcing member 60 is fixed to the field receiver 1 by a pair of reinforcing member fixing brackets 61 and 62 shown in FIGS. As shown in the figure, the location where the reinforcing material fixing brackets 61 and 62 are fixed is set to a position close to the hanger 40 holding the field receiver 1. The reinforcing material fixing brackets 61 and 62 of this example are the field edge receiving fixing plate portions 61a and 62a extending along the field edge receiving 1, and the reinforcing material 60 extending from the side edges of the field edge receiving fixing plate portions 61a and 62a. Reinforcing material fixing plate portions 61b and 62b extending along the direction, and locking portions 61c and 62c extending in a bowl shape from the upper edges of the reinforcing material fixing plate portions 61b and 62b. A large number of through holes 63 through which fixing screws S for fixing to the field edge receiver 1 are passed are provided in the field edge receiving plate portions 61a and 62a, respectively, and the reinforcing material 60 is fixed to the reinforcing material fixing plate portions 61b and 62b. A large number of through holes 64 through which the fixing screws S are passed are provided. When the locking portions 61c and 62c extending in a bowl shape are locked to the reinforcing material 60, the reinforcing material fixing brackets 61 and 62 are held at the construction position, so that the workability when the fixing screw S is tightened is good. . A large number of fixing through holes 63 for at least the field receiver 1 are provided so that the positions of the fixing screws S can be shifted from each other on both sides.

  The reinforcing material fixing brackets 61 and 62 in the examples shown in FIGS. 12 to 14 are such that the field edge receiving fixing plate portions 61 a and 62 a protrude above the field edge receiver 1 to the height of the reinforcing material 60 in the vertical direction during construction. The reinforcing material fixing plate portions 61b and 62b extend from the side edge of the protruding portion. That is, the vertical lengths of the reinforcing material fixing plate portions 61b and 62b are formed to be approximately half of the vertical length of the field edge receiving fixing plate portions 61a and 62a. In addition, the shapes shown in FIGS. 15 and 16 or FIGS. 17 and 18 can be used.

The reinforcing material fixing brackets 61 ′ and 62 ′ in the examples shown in FIGS. 15 and 16 have a reverse relationship to the above example, and in the vertical direction at the time of construction, the field edge receiving fixing plate portions 61′a and 62 ′. a has substantially the same length as the height of the field receiver 1, and the reinforcing material fixing plate portions 61'b and 62'b extend from the side edges and extend upward to the height of the reinforcing material 60. Yes. That is, the vertical lengths of the reinforcing material fixing plate portions 61′b and 62′b are formed to be approximately double the vertical length of the field edge receiving fixing plate portions 61′a and 62′a.
The reinforcing material fixing brackets 61 "and 62" in the example shown in FIGS. 17 and 18 have the same top and bottom of the edge receiving plate portions 61 "a and 62" b and the reinforcing material fixing plate portions 61 "b and 62" b. Has a length in the direction. That is, the reinforcing material fixing brackets 61 "and 62" in this example are formed of a metal chevron (L) in which the field edge receiving fixing plate portions 61 "a and 62" b and the reinforcing material fixing plate portions 61 "b and 62" b are made of metal. This is a configuration in which locking portions 61 "c, 62" c extending in a bowl shape from the side edge of the angle-shaped material are formed.
The through holes 63 ′, 63 ″, 64 ′, 64 ″ are the same as the examples of FIGS.

DESCRIPTION OF SYMBOLS 1 Field edge receiving 2 Field edge 10 Clip 11 Locking part 12 Clamping plate part 13 Clamping plate part 20 Clip spacer 21 Bottom plate part 22 Upright plate part 30 Clip stopper 31 Arm part 32 Locking part (connected to one)
33 Locking part 40 Hanger 41 Main piece 41a Holding part 41a-A Bottom part 41a-B Side wall part 41a-C Side wall part 41b Bolt fixing part 41b-A Upper extension part 41b-B Bending part 42 Auxiliary piece 42a Fixing plate part 42b Bolt fixing portion 42b-A Upper extension portion 42b-B Bending portion 43 Through hole 44b Through hole 44c Through hole 45b Screw hole 45c Through hole 46 U-shaped opening 47 Through hole 48 Through hole 40 'Hanger 41' Main piece 41 ' a Bottom plate portion 41'b Side plate portion 41'c Bolt fixing portion 41'c-A Upper extension portion 41'c-B Bending portion 42 'Auxiliary piece 42'a Side plate portion 42'b Bolt fixing portion 42'b-A Upper extension portion 42'b-B Bending portion 50 Brace 51 Field edge side brace holder 51a Clamp plate portion 51b Connection portion 51c Through hole 52 Bolt side brace holder 52a Curved plate portion 5 b Clamp plate portion 52c Through hole 52d Boundary portion 53 Reinforcement member 53a Reed portion 60 Reinforcement material 61, 61'61 "Reinforcement material fixing bracket 61a, 61'a, 61" a Field edge receiving fixation plate portion 61b, 61'b, 61 "b Reinforcement fixing plate portions 61c, 61'c, 61" c Locking portions 62, 62'62 "Reinforcement fixing brackets 62a, 62'a, 62" a Field edge receiving fixing plate portions 62b, 62'b 62 "b Reinforcement fixing plate 62c, 62'c, 62" c Locking part 63, 63 ', 63 "Through hole 64, 64', 64" Through hole

Claims (16)

  Hanging bolts fixed to the structural material of the building and suspended, hangers fixed to the suspension bolts, square pipe field edge holders held by the hangers, and field edges extending in a direction intersecting the field edge receivers And a clip for fixing the field edge to the field edge receiver.   A square pipe brace disposed between the field receiver and the suspension bolt held by the hanger, a bolt-side brace holder for fixing the brace to the suspension bolt, and the brace as the field receiver. The suspended ceiling structure according to claim 1, further comprising a field edge brace holder to be fixed.   The suspended ceiling structure according to claim 2, further comprising a hat-shaped reinforcement member having a cross-sectional hat shape that extends in an axial direction of the brace and covers a portion between the brace holders in the brace.   The suspended ceiling structure according to claim 2 or 3, further comprising a nut that is screwed onto the suspension bolt and abuts against the bolt-side brace holder from below.   The reinforcing material of the square pipe extended in the direction which cross | intersects the said field edge receptacle, and the reinforcement material fixing metal fitting which fixes this reinforcement material to the said field edge receptacle, It further contains any one of Claims 1-4. Suspended ceiling structure. In the suspended ceiling structure according to claim 5, a reinforcing material fixing bracket used for fixing the reinforcing material and the field edge receiver,
A field edge fixing plate portion having a through-hole extending along the field edge receiver and passing a fixing screw for fixing to the field edge receiver;
A reinforcing material fixing plate portion having a through hole extending from a side edge of the field edge receiving fixing plate portion along the extending direction of the reinforcing material, and through which a fixing screw for fixing the reinforcing material is passed;
A locking portion extending in a bowl shape from the upper edge of the reinforcing material fixing plate portion and locking to the reinforcing material;
Reinforcing material fixing bracket. The clip included in the suspended ceiling structure according to any one of claims 1 to 5, wherein the clip is locked to the field edge, and a hook-shaped sandwiching plate extending upward from the lock And a clamping plate portion extending upward from the front end of the clamping plate portion, the field edge receiver is sandwiched from both sides by two clips engaged with the field edge, and the clamping plate of these clips A clip spacer used together with the clip when the parts are clamped together with bolts and the field receiver is clamped by the clamping plate part,
A clip spacer which is formed in an inverted T shape comprising a bottom plate portion and an upright plate portion standing upright from the bottom plate portion, and the upright plate portion is sandwiched between the fastening plate portions. The clip included in the suspended ceiling structure according to any one of claims 1 to 5, wherein the clip is locked to the field edge, and a hook-shaped sandwiching plate extending upward from the lock And a clamping plate portion extending upward from the front end of the clamping plate portion, the field edge receiver is sandwiched from both sides by two clips engaged with the field edge, and the clamping plate of these clips A clip stopper for use with the clip when the parts are clamped together by bolts and the field receiver is clamped by the clamping plate part,
Two arms that are parallel to each other and in contact with the outside of the two clips that sandwich the field receiver and have a length that crosses the field edge, and extend downward from both ends of each arm A locking portion,
The locking portion at one end of each of the two arm portions is connected to one, and at least the locking portion connected to the one or the locking portion at the other end of the arm portion is fixed by a fixing screw. Clip stopper used by fixing to the edge. A hanger that is fixed to a suspension bolt that hangs down from the structural material of the building and holds the field guard.
A holding portion configured in a U-shape for receiving a field edge receiver is provided, and a bolt fixing portion extending upward from one side wall portion of the holding portion is bent toward the other side wall portion of the holding portion. The main piece,
The main piece has a fixing plate portion fixed to the other side wall portion of the holding portion, and the bolt fixing portion extending upward from the fixing plate portion is bent so as to overlap the bolt fixing portion of the main piece. An auxiliary piece,
Hanger equipped with. A hanger that is fixed to a suspension bolt that hangs down from the structural material of the building and holds the field guard.
It is formed in an L shape having a side plate portion bent from the bottom plate portion and extends upward to support two surfaces of the field receiver, and a bolt fixing portion extending upward from the side plate portion is in the same direction as the bottom plate portion. A bent main piece,
A side plate portion pivotally attached to the bottom plate portion of the main piece supports another surface of the field receiver, and a bolt fixing portion extending upward from the side plate portion overlaps the bolt fixing portion of the main piece. An auxiliary piece bent to
Hanger equipped with. A brace holder for fixing a brace arranged between a hanger bolt held by a hanger fixed to a hanging bolt suspended from a structural material of a building and the hanging bolt to the hanging bolt,
A curved plate portion curved to wrap around the suspension bolt;
Two clamp plate portions extending from the curved plate portion and holding the brace downward and diagonally from both sides;
A through hole opened in the clamp plate portion for passing a fixing screw for fixing the clamped brace;
A clamp that penetrates from one of the clamp plate portions to the other at a boundary portion between the curved plate portion and the clamp plate portion, and clamps the two clamp plate portions against each other;
Brace holder with   The brace holder according to claim 11, wherein the through hole is formed at a position where the one clamp plate portion and the other clamp plate portion do not overlap each other. A brace holder for fixing a brace disposed between a hanger bolt held by a hanger fixed to a hanger bolt hanging from a structural material of a building and the hanger bolt to the hanger bolt,
Two clamp plate parts for holding the brace obliquely upward from both sides and holding the edge receiver positioned below the brace from both sides;
A connecting part for connecting the clamp plate part on the upper side of the brace;
A through-hole opened in the clamp plate part to pass a fixing screw for fixing the clamped brace and the field edge receiver,
Brace holder with A brace holder for fixing a brace disposed between a hanger bolt held by a hanger fixed to a hanger bolt hanging from a structural material of a building and the hanger bolt to the hanger bolt,
Two clamp plate parts for holding the brace obliquely upward from both sides and holding the edge receiver positioned below the brace from both sides;
A connecting part for connecting the clamp plate part below the edge holder;
A through-hole opened in the clamp plate part to pass a fixing screw for fixing the clamped brace and the field edge receiver,
Brace holder with A brace holder for fixing a brace disposed between a hanger bolt held by a hanger fixed to a hanger bolt hanging from a structural material of a building and the hanger bolt to the hanger bolt,
Two clamp plate parts for holding the brace obliquely upward from both sides and holding the edge receiver positioned below the brace from both sides;
A connecting portion for connecting the clamp plate portion in a space formed between the upwardly inclined brace and the field edge receiver,
A through-hole opened in the clamp plate part to pass a fixing screw for fixing the clamped brace and the field edge receiver,
Brace holder with   The brace holder according to any one of claims 13 to 15, wherein the through hole is formed at a position where the one clamp plate portion and the other clamp plate portion do not overlap each other.

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