JP4871069B2 - Suspended ceiling foundation structure and joint metal fittings - Google Patents

Description

  The present invention relates to a suspension made of a plate material on the tip side of a suspension bolt that is suspended from an upper floor slab or the like and suspended from a ceiling structure frame in which a field edge and a field edge receiver are framed in a substantially lattice shape. The present invention relates to a suspended ceiling foundation structure constructed by being supported by being suspended through a metal fitting.

For example, Patent Document 1 describes a conventionally used suspended ceiling foundation structure.
As shown in FIG. 11, a suspended ceiling foundation structure 100 conventionally used has a ceiling structure frame 4 that is framed by a field edge 2 and a field edge receiver 3 suspended from an upper floor slab (not shown) or the like. The suspension bolts 5 are suspended and supported on the front end side of the suspension bolts 5 that are suspended from the main points via suspension brackets 6 made of a plate material.

  As shown in FIG. 11, the ceiling structure frame 4 is formed by framing a field edge 2 and a field edge receiver 3 made of grooved steel (channel material) having a substantially U shape in a sectional view in a lattice shape. . The portions where the field edge 2 and the field edge receiver 3 are orthogonal to each other are joined by using a dedicated joint fitting 10 that sandwiches the flanges of the field edge 2 and the field edge receiver 3 vertically with two metal plates.

  As shown in FIG. 12, the hanging metal fitting 6 is composed of a metal fitting main body portion 6a and a holding surface portion 6d, and includes a frame receiving portion 6b for holding the field edge receiving member 3 and is formed in a substantially hook shape. The hanging metal fitting 6 is provided with a mounting portion 6c having a through hole 6e on the upper end side of the metal fitting main body portion 6a by bending it horizontally, as shown in FIGS. 11 and 12 (b), an upper floor slab (not shown). ) And the like, and is formed so as to be attached to the tip side of the suspension bolt 5 arranged at the important point by the upper and lower nuts 12g, 12g.

  The suspended ceiling foundation structure 100 constructed in this way is used to drop a ceiling panel (not shown) attached to the ceiling structure frame 4 or to form a field edge constituting the ceiling structure frame 4 when an earthquake occurs. Seismic resistance is required to prevent 2 and the field guard 3 from falling off.

Therefore, as shown in FIG. 11, the suspended ceiling foundation structure 100 reinforces the brace material 8 (diagonal material) that connects adjacent suspension bolts 5 in a direction orthogonal to the field edge receiver 3. In addition, the seismic resistance against shaking when an earthquake occurs, particularly against shaking in the out-of-plane direction (longitudinal direction of the field edge) of the hanging bracket 6 has been enhanced.
In other words, the ceiling structure frame 4 suspended and supported only by the suspension bolts 5 swings like a pendulum when an earthquake or the like occurs. Therefore, the brace material 8 is arranged obliquely like a brace to suppress the swing. Was.
JP-A-60-105747 (FIGS. 1 and 2)

  Here, as shown in FIG. 12, the metal fitting main body portion 6a constituting the hanging metal fitting 6 is a strip-shaped plate material having a narrow width, so that the inclined lower end side of the brace material 8 can be directly attached to the metal fitting main body portion 6a itself. It was difficult. In particular, it was difficult to attach in the out-of-plane direction (longitudinal direction of the field edge 2) of the metal fitting main body portion 6a indicated by the arrow X in FIG. For this purpose, as shown in FIG. 11, the brace material 8 is joined to the tip side portion of the suspension bolt 5 (hereinafter, the mounting position on the inclined lower end side of the brace material 8 is the seismic reinforcement position) by welding or the like. .

  For this reason, the suspended ceiling foundation structure 100 in which the brace material 8 is joined to the tip side portion of the suspension bolt 5 has a bracket body portion indicated by an arrow X as compared to the in-plane direction of the bracket body portion 6a indicated by an arrow Y in FIG. The out-of-plane direction of 6a was inferior in earthquake resistance.

  In other words, when an earthquake or the like occurs, the hanging bracket 6 is disposed so that the longitudinal direction of the field receiver 3 indicated by the arrow Y and the in-plane direction of the bracket main body 6a are parallel to each other. With the fulcrum (see (b) of FIG. 12) as a fulcrum, the metal fitting body 6a shakes greatly in the out-of-plane direction of the metal fitting main body 6a. Thereby, a torsional moment and a bending moment are generated in the entire suspended ceiling foundation structure 100, and the fear of dropping of the ceiling panel (not shown) and dropping of the field edge 2 and field edge receiver 3 constituting the ceiling structure frame 4 is eliminated. The current situation was not.

Further, when the suspended ceiling foundation structure 100 is shaken due to an earthquake or the like, the shaking is transmitted to the field edge 2 and the field edge receiver 3 as a horizontal torsional moment or bending moment, and the ceiling structure frame 4 is undulated. . In particular, it is presumed that the torsional moment and the bending moment are concentrated on the suspension fitting 5 and the joining fitting 10 that join (connect) the members.
Therefore, there is a possibility that the frame receiving part 6b of the hanging metal fitting 6 for holding the field edge receiver 3 may be damaged, or the frame receiving part 6d of the frame receiving part 6b for holding the field edge receiver 3 may be deformed so as to expand. Thus, there remains a concern that the field edge receiver 3 is detached from the frame receiver 6b. Further, similarly to the hanging metal fitting 6, stress is concentrated on the joint metal fitting 10, and there is a concern that the joint metal fitting 10 is damaged, skids, and eventually the field edge 2 falls.

  Therefore, the present invention has been developed to solve the above-described problems, and has a highly earthquake-resistant suspended ceiling foundation structure, in particular, a suspended ceiling foundation structure having a high earthquake resistance in the out-of-plane direction of the hanging bracket, and improves the earthquake resistance. Therefore, an object of the present invention is to provide a reinforcing metal fitting for a joint metal that reinforces a joint metal connected to a portion where a field edge and a field edge receiver intersect.

  The present invention, which was created to solve such a problem, includes a plurality of field edges, a plurality of field edge receivers arranged orthogonal to the field edge, and the field edge and the field edge receiver are orthogonal to each other. A joint fitting for joining places, a plurality of suspension bolts for suspending the field edge receiver, a suspension metal installed on the tip side of the suspension bolt and connecting the field edge receiver and the suspension bolt, and the suspension metal fitting A suspended ceiling base structure having a reinforcing bracket for a hanging bracket that reinforces a brace and a brace material disposed in a direction perpendicular to the field edge receiver, wherein the reinforcing bracket for the hanging bracket is attached to the suspension bolt And a reinforcing surface portion that is attached to the field edge orthogonal to the longitudinal direction of the field edge receiver, and the brace material is the member. Connecting the mounting part and the suspension bolt diagonally And features.

Here, a structure in which the field edge and the field edge receiver are framed by the joint metal fittings is referred to as a ceiling structure frame.
According to this invention, by attaching the brace material to the member attaching portion provided in the reinforcing surface portion of the reinforcing metal part for the hanging metal fitting, it is possible to lower the inclined lower end side (seismic proof reinforcement position) of the brace material than before. Thereby, since the eccentric distance from the ceiling structure frame to the seismic reinforcement position is shortened, the torsional moment and the bending moment acting on the ceiling structure frame can be reduced.
In addition, by using a mounting bracket attached to the suspension bolt and a reinforcing bracket for the suspension bracket provided with a reinforcing surface portion attached to the field edge receiver, the connection strength between the suspension bolt and the field edge receiver can be increased by a synergistic effect with the suspension by the suspension bracket. Since it can be strengthened, the earthquake resistance of the suspended ceiling foundation structure can be enhanced.
In addition, since the reinforcing surface part of the reinforcing bracket for suspension metal fittings is attached to the field edge receiver so that the reinforcement surface part is orthogonal to the longitudinal direction of the field edge receiver, it is made of plate material and is therefore more earthquake resistant than the in-plane direction. It is possible to improve the earthquake resistance against the rolling in the out-of-plane direction of the hanging metal fitting that is inferior.

  Further, the present invention provides a plurality of field edges, a plurality of field edge receivers arranged orthogonal to the field edge, a joint fitting for joining the position where the field edge and the field edge receiver are orthogonal, A plurality of suspension bolts for suspending the field edge receiver, a suspension metal fitting connected to the field edge receiver and the suspension bolt, and a reinforcement metal fitting for suspension metal metal that reinforces the suspension metal hardware. A suspended ceiling foundation structure comprising a horizontal member that connects two or more reinforcing brackets for the hanging bracket and a brace member disposed in a direction perpendicular to the field receiver, wherein the reinforcement for the hanging bracket is provided. The metal fitting has an attachment portion attached to the suspension bolt, and a member attachment portion to which the horizontal member is attached, and has a reinforcing surface portion attached to the field receiver perpendicular to the longitudinal direction of the field receiver. The brace material obliquely connects the horizontal member and the suspension bolt. Characterized by sintering.

According to this invention, two or more member attaching portions are connected by a horizontal member, and the brace member is attached to the horizontal member, thereby lowering the inclined lower end side (seismic reinforcement position) of the brace member than before. . Thereby, since the eccentric distance from the ceiling structure frame to the seismic reinforcement position is shortened, the torsional moment and the bending moment acting on the ceiling structure frame can be reduced. Moreover, since a horizontal material is arrange | positioned, a horizontal material and a suspension bolt can be connected by a desired angle and position using a brace material.
In addition, by using the mounting bracket attached to the suspension bolt and the reinforcing bracket for the suspension bracket provided with the reinforcing surface portion attached to the field receiver, the connection strength between the suspension bolt and the ceiling structure frame can be increased by the synergistic action with the suspension by the suspension bracket. Since it can be strengthened, the earthquake resistance of the suspended ceiling foundation structure can be enhanced.
In addition, since the reinforcing surface part of the reinforcing bracket for suspension metal fittings is attached to the field edge receiver so that the reinforcement surface part is orthogonal to the longitudinal direction of the field edge receiver, it is made of plate material and is therefore more earthquake resistant than the in-plane direction. It is possible to improve the earthquake resistance against the rolling in the out-of-plane direction of the hanging metal fitting that is inferior.

  Further, the field edge according to the present invention is made of channel steel provided with a pair of side flanges having ribs, and the field edge receiver extends horizontally from both ends of the base surface portion suspended from the field edge. It consists of a grooved steel with an upper flange and a lower flange that protrude, and the joint fitting includes a hook portion that is hooked to the rib, a main body plate portion that is in contact with the base surface portion, and an upper flange. It is good also as a structure which has a horizontal part contact | abutted, and at least one is fastened with the said field edge receiver and a fastener among the said main body board part and the said horizontal part.

  According to this invention, the hooking portion is hooked on the ribs of the field edge, and the horizontal part is locked to the upper side flange of the field edge receiver, whereby the field edge and the field edge receiver can be easily joined. In addition, the joints are firmly joined to the field receiver by the fasteners, so in the event of shaking, the joints between the field edge and the field receiver are prevented from being damaged, resulting in improved earthquake resistance. Can be increased.

  Further, the field edge according to the present invention is made of a grooved steel having a pair of side flanges having ribs, and the field edge receiver extends horizontally from both ends of the base surface portion that is suspended from the field edge. The upper and lower plates are made of channel steel having an upper flange and a lower flange, and the joining bracket includes an upper plate that is in contact with the lower flange from above, a lower plate that is in contact with the rib from below, and the upper plate A suspended ceiling foundation structure according to claim 1 or 2, further comprising: a flat plate sandwiched by the sandwiching tool together with the upper plate and the lower plate, It may further include a reinforcing metal fitting for a connecting metal fitting, which is formed perpendicularly from both ends of the flat plate and includes a side plate joined to the side flange.

  According to this invention, the lower flange of the field edge receiver and the ribs of the field edge are sandwiched by the upper and lower plates of the joint metal fitting and the flat plate of the joint metal reinforcement metal fitting with the clamping tool. Since the side plate and the side edge flange of the field edge are joined, side slip in the longitudinal direction of the field edge (the out-of-plane direction of the hanging bracket) can be prevented, and the earthquake resistance can be enhanced.

  Moreover, the reinforcing metal fitting for joint metal fittings according to the present invention may include a slit in the side plate that has a gap substantially equal to the thickness of the lower flange, and is fitted into the lower flange.

  According to this invention, the side plate related to the reinforcing metal fitting for the joint metal is joined to the side flange of the field edge and is fitted and inserted so as to bite into the lower flange of the field edge receiver. Thereby, since the vertical movement of the lower flange is restricted, it is possible to prevent the field edge receiver from being tilted.

  Moreover, this invention may be provided in the direction parallel to the said field edge receiver, and may provide the brace material which connects the said field edge receiver and the said suspension bolt diagonally.

  According to this invention, since the brace material can be directly attached to the field edge receiver, the inclined lower end side (seismic reinforcement position) of the brace material can be lowered as compared with the conventional art. Thereby, since the eccentric distance from the ceiling structure frame to the seismic reinforcement position is shortened, the torsional moment and the bending moment acting on the ceiling structure frame can be reduced. In addition, since the brace material is directly attached to the edge holder, the number of parts can be reduced and construction can be easily performed.

  Further, the present invention provides a field edge made of channel steel provided with a pair of side flanges having ribs, and a field edge receiver made of channel steel provided with a lower side flange extending horizontally from one end of the base surface portion. Are joined at the intersections of the lower flange, the upper plate abutted from above the lower flange, the lower plate abutted from below the lower flange, the upper plate, and the clamping device for clamping the lower plate And a reinforcing metal fitting for a joint metal fitting covered with a joint metal fitting, wherein the upper plate and the lower plate are clamped together by the clamping tool, and the side is formed perpendicularly from both ends of the flat plate, And a side plate joined to the side flange.

  According to this invention, the field edge and the field edge receiver are sandwiched between the upper and lower plates of the joint metal fitting and the flat plate of the reinforcement metal fitting for the joint metal fitting by the clamping tool, and the side plate of the joint metal reinforcement metal fitting is Since it is joined to the edge, the joint strength between the field edge and the field edge receiver can be increased.

  Further, the side plate according to the present invention is provided with a slit having a gap substantially equal to the thickness of the lower flange and fitted into the lower flange.

  According to this invention, the side plate related to the reinforcing metal fitting for the joint metal fitting is joined to the side flange of the field edge and fitted so as to bite into the lower side flange of the field edge receiver. Thereby, since the vertical movement of the lower flange is restricted, it is possible to prevent the field edge receiver from being tilted.

  According to the suspended ceiling foundation structure according to the present invention, it is possible to improve the earthquake resistance, particularly the earthquake resistance in the out-of-plane direction of the hanging metal fitting.

<First embodiment>
The best embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an overall perspective view showing a suspended ceiling foundation structure according to the first embodiment. FIG. 2 is an enlarged perspective view showing a state in which the reinforcing metal fitting for hanging metal fittings and the reinforcing metal fitting for metal fittings according to the first embodiment are attached. FIG. 3 is an exploded perspective view showing the joint fitting reinforcing metal fitting according to the first embodiment. FIG. 4 is a perspective view showing the reinforcing bracket for a hanging bracket according to the first embodiment. FIGS. 5A and 5B are views showing an attachment state of the reinforcing metal fitting for a hanging metal fitting according to the first embodiment, in which FIG. 5A is a front view and FIG. 5B is a side view. 6A and 6B are diagrams showing a suspended ceiling foundation structure according to the second embodiment, in which FIG. 6A is a partial perspective view, and FIG. 6B is an enlarged perspective view of a joint fitting. FIG. 7 is an overall perspective view showing a suspended ceiling foundation structure according to the third embodiment.

  As shown in FIG. 1, the suspended ceiling foundation structure 1 includes a ceiling structure frame 4 that is framed by field edges 2, 2..., Field edge receivers 3, 3. For example, the suspension bolts 5 are supported by being suspended from the front ends of the suspension bolts 5, 5... Suspended from an upper floor slab (not shown). A ceiling panel (not shown) such as a finishing board or a decorative board is installed below the field edge 2. In the present embodiment, the horizontal member 7 is installed so as to be orthogonal to the field receiver 3, and brace members 8, 8 that obliquely connect the horizontal member 7 and a part of the suspension bolt 5 are installed. ing.

In the present embodiment, the suspended ceiling foundation structure 1 is provided with the joint metal fittings 11 for reinforcing the joint metal fittings 10 at the four positions indicated by P in FIG. Moreover, the hanging metal fittings 12 for reinforcing the hanging metal fittings 6 are installed at two locations indicated by Q in FIG.
That is, only the joint fitting 10 is joined to a place other than P among the places where the field edge 2 and the field edge receiver 3 intersect. Moreover, only the hanging metal fitting 6 is installed in places other than Q among the hanging metal fittings 6. Hereinafter, each configuration will be described in detail.

As shown in FIG. 1, the ceiling structural frame 4 is a frame that serves as a skeleton that forms a ceiling surface by installing a ceiling panel (not shown). The ceiling structural frame 4 is constructed by joining the field edge 2 and the field edge receiver 3 in a substantially lattice shape via a joint fitting 10.
As shown in FIGS. 1 and 2, the field edge 2 is made of a grooved steel including ribs 2 b and 2 b extending inward from a pair of side flanges 2 a and 2 a in the present embodiment. Thus, they are arranged side by side with a certain interval with the open side facing upward.
In this embodiment, the field edge receiver 3 is a groove provided with a base surface part 3a formed perpendicularly from the field edge 2, an upper side flange 3b extending horizontally from both ends of the base surface part 3a, and a lower side flange 3c. It consists of a section steel and is joined to the field edge 3 in a grid pattern with a certain interval with the open side facing sideways. A portion where the field edge 2 and the field edge receiver 3 are orthogonal to each other is joined by a joint fitting 10 described later.

As shown in FIGS. 3 and 11, the joining bracket 10 is a bracket that joins the perpendicular portions of the field edge 2 and the field edge receiver 3.
In this embodiment, the joint fitting 10 includes an upper plate 10a and a lower plate 10b that are stacked one above the other, and a bolt 10c and a nut 10d that penetrate and fasten the upper plate 10a and the lower plate 10b. Through holes 10e and 10f are formed in the center of the upper plate 10a and the lower plate 10b, respectively. On one long side of the upper plate 10a, a bent portion 10h is bent and formed on the one long side. In addition, V-shaped portions 10i and 10i each having a V-shaped sectional view are formed at both ends of the lower plate 10b so as to be easily engaged with the ribs 2b and 2b of the field edge 2. Hereinafter, the bolt 10c and the nut 10d are also collectively referred to as a clamping tool 10g.

  As shown in FIG. 3, the field edge 2 and the field edge receiver 3 abut the upper plate 10 a of the joint fitting 10 over the rib 2 b of the field edge 2 and the lower side flange 3 c of the field edge receiver 3, and the lower plate After engaging 10b from below the rib 2b of the field edge 2, the upper plate 10a and the lower plate 10b are clamped and joined by the holding tool 10g. Since the joining metal fitting 10 has the bent part 10h in the upper plate 10a, the urging force can be increased, and the joining metal fitting 10 can be tightened more firmly.

As shown in FIGS. 2 and 3, the joint metal fitting 11 is a reinforcement metal fitting over the joint metal 10, and the joint strength between the field edge 2 and the field edge receiver 3, particularly the field edge. 2 is a metal fitting that increases the bonding strength in the longitudinal direction of FIG. 2 (the direction of the arrow X in FIG. 2).
In the present embodiment, the reinforcing metal fitting 11 for joining metal fittings has side plates 11b and 11b that are formed perpendicularly from both ends of the flat plate 11a, and is formed to have a U-shape in cross section. The inner widths of the side plates 11b and 11b of the joint fitting reinforcing metal fitting 11 are formed substantially equal to the outer widths of the side flanges 2a and 2a of the field edge 2. A through-hole 11c is provided at the center of the flat plate 11a so that the bolt 10c can be inserted therethrough. Through holes 11d and 11d are formed in part of the side plates 11b and 11b. Further, the side flange 2a of the field edge 2 is formed with through holes 2c and 2c that correspond to the through hole 11d and are screwed together by a fastener 11e such as a screw. Slits 11f and 11f are formed at one end edges of the side plates 11b and 11b substantially horizontally from one end of the side plate 11b toward the center. The vertical height of the slit 11 f is formed substantially equal to the thickness of the lower flange 3 c of the field edge receiver 3.

The reinforcing metal fitting 11 for joining metal fittings overlaps the through hole 11c of the flat plate 11a with the through holes 10e and 10f of the upper plate 10a and the lower plate 10b, and the slit 11f is fitted into the lower flange 3c of the field edge receiver 3. Thereafter, the flat plate 11a, the upper plate 10a, and the lower plate 10b are sandwiched and joined by the sandwiching tool 10g. Further, the joint metal reinforcing metal fitting 11 is screwed together by fasteners 11e such as screws from both outer sides of the side plate 11b of the metal joint reinforcing metal fitting 11.
As described above, according to the reinforcing metal fitting 11 for the joint metal fitting, the ribs 2b, 2b and the lower flange 3c of the field edge 2 can be sandwiched by the joint metal fitting 10 and can be reinforced so as to cover the joint metal fitting 10. Since the joint strength between the field edge 2 and the field edge receiver 3, in particular, the movement in the out-of-plane direction (the longitudinal direction of the field edge 2) of the hanging bracket 6 is restricted, the joint strength can be increased.
Moreover, since the lower side flange 3c is inserted and inserted into the slit 11f, the vertical movement of the lower side flange 3c is restricted, and the tilting of the field receiver 3 can be prevented. Moreover, even if it is the existing suspended ceiling foundation | structure 1 for the joining bracket reinforcement metal fitting 11, since it can attach after once releasing the clamping tool 10g, it can improve earthquake resistance by retrofitting.

  The suspension bolt 5 is a metal fitting that connects the upper floor slab (not shown) and the ceiling structural frame 4 as shown in FIG. 1 and FIG. The suspension bolt 5 is a rod-shaped steel material, and a spiral groove is formed on the outer periphery so that the nut 12g is screwed. The suspension bolts 5 are arranged at predetermined intervals on the field edge receiver 3 that constitutes the ceiling structural frame 4. The base end of the suspension bolt 5 is fixed to the upper floor slab, and a suspension fitting 6 to be described later is installed on the distal end side.

  As shown in FIG. 11, the hanging bracket 6 is a bracket that is installed on the tip end side of the hanging bolt 5 and is hooked so as to hook the field edge receiver 3. As shown in FIGS. 12A and 12B, the hanging metal fitting 6 includes a metal fitting main body portion 6a for holding the field edge receiver 3, a frame receiving portion 6b, and a clamping surface portion 6d, and the clamping surface portion 6d is a free end. Thus, it is formed in a substantially hook shape. Moreover, the attachment part 6c attached to the suspension bolt 5 is formed in the upper end of the metal fitting main-body part 6a. The mounting portion 6c is provided with a through hole 6e through which the suspension bolt 5 is inserted, and the clamping surface portion 6d is provided with a through hole 6g into which the short bolt 6f is screwed. The short bolt 6f is fastened above the field receiver 3 and suppresses the vertical movement of the field receiver 3.

The suspension bracket reinforcement bracket 12 is covered with the suspension bracket 6, thereby increasing the bonding strength in the out-of-plane direction of the suspension bracket 6 and lowering the mounting position of the brace material 8 to be described later. It is a metal fitting to improve the earthquake resistance of
As shown in FIG. 4, the reinforcing metal fitting 12 for a hanging metal fitting according to the first embodiment includes a mounting portion 12a horizontally on the upper end side and a reinforcing surface portion 12b formed substantially vertically from the mounting portion 12a. Has been. Further, a notch portion 12c is formed at one corner on the lower end edge side of the reinforcing surface portion 12b, and the frame mounting piece portion 12d formed perpendicularly from the reinforcing surface portion 12b and the frame mounting piece portion 12d is perpendicular to the opposite side. And a locking piece portion 12e formed on the surface. In the present embodiment, the reinforcing bracket 12 for the hanging bracket is formed by punching and bending an integrally formed metal plate.

  As shown in FIGS. 2 and 4, the attachment portion 12 a is formed in a substantially rectangular shape in plan view by bending the upper end side of the reinforcing surface portion 12 b horizontally. The mounting portion 12a is formed with a bolt mounting portion 12f that is opened in a U shape in parallel with the short side from one long side edge side. The suspension bracket 6 and the suspension bracket reinforcement bracket 12 are inserted through the suspension bolt 5 by superimposing the bolt mounting portion 12f and the through hole 6e (see FIG. 12A) of the attachment portion 6c of the suspension bracket 6. 12g and 12g are clamped and attached.

  2 and 5A, the reinforcing surface portion 12b extends vertically from one end side of the mounting portion 12a and serves as a member mounting portion 12h to which a horizontal member 7 to be described later is mounted. The metal plate main body 6a is formed wider than the plate width. Further, as shown in FIG. 2, the reinforcing surface portion 12 b is orthogonal to the longitudinal direction of the field receiver 3, and the upper side flange 3 b of the field receiver 3 is abutted across the width direction to attach the horizontal member 7. It is formed in a wide shape so that it can be made.

In addition, the plate | board width of the reinforcement surface part 12b provides the earthquake resistance of the same level as the in-plane direction of the metal fitting main-body part 6a to the out-of-plane direction (arrow X direction of FIG. 2) of the metal fitting main-body part 6a of the hanging metal fitting 6. It is sufficient that the width is as large as possible, and the illustrated example does not have to be wide. That is, the greater the width of the reinforcing surface portion 12b, the stronger the earthquake resistance against rolling of the metal fitting main body portion 6a in the out-of-plane direction.
Although not shown, reinforcing ribs or the like may be provided on the reinforcing face 12b by drawing or other processing so as to impart bending strength in the height direction and width direction of the reinforcing face 12b.

  As shown in FIG. 2 and FIG. 5A, the cutout portion 12c is formed at a corner of the lower end edge side of the reinforcing surface portion 12b. The notch portion 12 c is in contact with the upper side flange 3 b and the base surface portion 3 a of the field edge receiver 3 and is in contact with the width direction of the upper edge flange 3 b of the field edge receiver 3.

  As shown in FIGS. 4 and 5B, the frame mounting piece 12d is formed so as to be cut and raised at right angles to the in-plane direction of the reinforcing surface portion 12b, and screw holes 12i and 12i are formed. It is installed. The frame attaching portion 12d is brought into surface contact with the base surface portion 3a of the field receiver 3 and fastened with screws 12j.

  As shown in FIGS. 2 and 5A, the locking piece portion 12e is formed so as to protrude perpendicularly to the reinforcing surface portion 12b and on the opposite side to the frame mounting piece portion 12d. That is, when the frame attachment side portion 12d is cut and raised from the reinforcing surface portion 12b, the locking piece portion 12e is left uncut from one corner of the frame attachment side portion 12d, so that the notch portion 12c is notched. The horizontal edge is bent in a direction opposite to the bending direction of the frame mounting piece 12d.

  Thus, according to the locking piece portion 12e, as shown in FIG. 2 and FIG. 5A, it is formed on the upper end side of the clamping surface portion 6d so as to press the clamping surface portion 6d of the hanging bracket 6 from the outside. . Thereby, since it can prevent that the upper end of the clamping surface part 6d expands outside and deform | transforms by shaking of an earthquake etc., it can prevent that the field edge receiver 3 remove | deviates from the suspension metal fitting 6, and falls off.

In the present embodiment, as shown by a two-dot chain line in FIGS. 2 and 5A, the locking piece 12e ′ may be formed to hang down from the lower end edge side of the reinforcing surface portion 12b. That is, like the above-described locking piece portion 12e, it may be left separated from the frame mounting piece portion 12d without being bent so as to be perpendicular to the reinforcing surface portion 12b. Thereby, it can contact | abut and latch to the edge part of the upper side flange 3b of the field edge receiver 3. FIG.
In addition, in this embodiment, although the reinforcement surface part 12 was provided with the latching edge part 12e, the structure which does not provide the latching piece part 12e may be sufficient.

  The horizontal member 7 is a member disposed in a direction perpendicular to the field edge receivers 3 and 3 in order to install a brace member 8 to be described later. In the present embodiment, the horizontal member 7 is a channel steel (channel steel member), and as shown in FIGS. 1 and 2, the base surface portion 7 a of the horizontal member 7 and the member mounting portion of the reinforcing bracket 12 for the hanging bracket. 12h is contacted and attached by screws (not shown).

As shown in FIG. 1, the brace material 8 is disposed in a direction orthogonal to the field edge receiver 3, and the horizontal material 7 and the suspension bolt 5 are obliquely connected to increase the joining strength of the suspended ceiling foundation structure 1. In addition, it is a member that enhances the earthquake resistance in the longitudinal direction of the field edge 2 (the out-of-plane direction of the hanging bracket 6).
In this embodiment, the brace material 8 is made of a channel steel material, and forms an angle of approximately 45 ° from the attachment position of the suspension bolt 5, the inclined lower end side is substantially the center of the horizontal material 7, and the inclined upper end side is the horizontal material. 7 is joined to a suspension bolt 5 disposed on a substantially extended line. In the present embodiment, two brace members 8 are arranged so as to exhibit a substantially V-shape in a side view.

Thus, by providing the horizontal member 7 and the brace 8, the bonding strength in the direction orthogonal to the field edge receiver 3 (the out-of-plane direction of the hanging bracket 6) is increased, and the brace material 8 is orthogonal to the field edge receiver 3. Can be easily joined in the direction. Further, since the horizontal member 7 is attached to the reinforcing surface portion 12b of the suspension metal fitting reinforcing metal 12, the attachment position (seismic reinforcement position) of the brace material 8 on the inclined lower end side can be lowered. Further, by disposing the horizontal member 7, the base end side of the suspension bolt 5 and the horizontal member 7 can be attached at a desired angle and position.
In addition, the kind of horizontal member 7 and the brace member 8 and the number of installation are not limited. Moreover, although the arrangement | positioning angle of the brace material 8 may be many times, it is preferable that it is 45 degrees. Further, the horizontal member 7 and the brace member 8 may be attached by using a fastener such as a screw or by welding.

Next, the construction method (in the case of newly installing) of the suspended ceiling foundation structure 1 according to the first embodiment configured as described above will be described.
First, as shown in FIG. 1 and FIG. 3, the field edge 2 with the open side facing upward is arranged at a certain interval, and then the field edge receiver 3 with the open side facing the side is the field edge 2. Arrange in the orthogonal direction. And in the location where the field edge 2 and the field edge receiver 3 cross at right angles, after sandwiching the lower edge flange 3c of the field edge receiver 3 and the rib 2b of the field edge 2 with the upper plate 10a and the lower plate 10b of the joint metal fitting 10, It clamps and joins with the tool 10g.

  Moreover, in this embodiment, the reinforcement metal fitting 11 for joining metal fittings is installed in the location of P shown in FIG. The reinforcing metal fitting 11 for joining metal fittings has the slits 11f, 11f of the reinforcing metal fitting 11 for joining metal fittings in the lower side, with the lower flange 3c of the field edge receiving 3 and the rib 2b of the field edge 2 sandwiching the upper plate 10a and the lower plate 10b. After fitting into the flange 3c, the through holes 10e, 10f, and 11c are overlapped and sandwiched by the sandwiching tool 10g and joined.

  Next, as shown in (a) and (b) of FIG. 5, among the field edge 2 and field edge receiver 3 constituting the ceiling structural frame 4, the field edge receiver 3 is suspended at important points. The attachment portion 6c of the suspension fitting 6 is attached to the front end side of the suspension bolt 5 suspended from an upper floor ceiling floor slab (not shown) by the nuts 12g and 12g, and the suspension fitting 6 is installed on the suspension bolt 5. . At this time, the height level of the ceiling structural frame 4 is adjusted by the lower nut 12g, and the level of adjusting the mounting height position of the hanging bracket 6 with respect to the hanging bolt 5 is adjusted, but the upper nut 12g is fully tightened. Be prepared in a temporarily fixed state.

  After the attachment leveling of the suspension fitting 6 to the suspension bolt 5 is completed, as shown in FIG. 5B, in the state where the in-plane direction of the fitting body 6a is directed to the longitudinal direction of the field edge receiver 3, The field receiver 3 is fitted and suspended in a frame receiver 6b formed on the lower end side of the metal fitting main body 6a.

Thus, after the ceiling structural frame 4 is suspended and supported by the suspension bolt 5 via the suspension fitting 6, the reinforcement fitting 12 for the suspension fitting is attached to the position Q in FIG. As shown in FIG. 5A, the reinforcing bracket 12 for the hanging bracket is perpendicular to the in-plane direction of the reinforcing bracket 12 for the hanging bracket 12 with respect to the in-plane direction of the bracket main body 6 a of the hanging bracket 6. To be attached.
That is, the mounting portion 12a of the reinforcing bracket 12 for the hanging bracket is attached to the nut 12g in the temporarily fixed state and the mounting portion 6c of the hanging bracket 6 so that the in-plane direction of the reinforcing surface portion 12b is parallel to the longitudinal direction of the field edge 2. Is interposed by a bolt mounting portion 12f. And while attaching so that the upper edge flange 3b of the field edge receiver 3 may be straddled by the notch part 12c, the upper part of the latching piece part 12e and the clamping surface part 6d is contact-supported.

  As a result, the frame attachment piece 12d of the reinforcing surface portion 12b is addressed along the base surface portion 3a of the field edge receiver 3, so that the frame attachment portion 12d is attached to the base surface portion 3a with screws 12j and 12j. Then, the temporarily tightened nut 12g is finally tightened to fix the mounting portion 12a of the hanging bracket reinforcing bracket 12 between the nut 12g and the mounting portion 6c of the hanging bracket 6, and the hanging bracket reinforcing bracket 12 is suspended. Attached to the suspension bolt 5 together with the metal fitting 6.

In this way, after attaching the reinforcing metal portion 12 for the hanging bracket to the bolt 5 and the hanging bracket 6, as shown in FIG. 1, the horizontal member 7 disposed horizontally is attached to the member of the reinforcing bracket 12 for the hanging bracket. It is brought into contact with the portion 12h and attached with screws (not shown).
Then, the brace members 8 and 8 are installed so that the substantially center of the horizontal member 7 and the suspension bolt 5 are obliquely connected at about 45 ° and become substantially V-shaped in a side view. The inclined lower end side of the brace material 8 is attached to the base surface portion 7a of the horizontal material 7 by screws (not shown).
The construction procedure described above is merely an example and is not limited.

As described above, according to the suspended ceiling foundation structure 1 according to the first embodiment, the horizontal member 7 is installed on the member mounting portions 12h and 12h of the reinforcing bracket 12 for the hanging bracket, and the brace member 8 is attached to the horizontal member 7. By attaching, it is possible to lower the inclined lower end side (seismic reinforcement position) of the brace material 8 than before. Thereby, since the eccentric distance from the ceiling structure frame 4 to the seismic reinforcement position is shortened, the torsional moment and the bending moment acting on the ceiling structure frame 4 can be reduced.
Moreover, the connection strength between the suspension bolt 5 and the field receiver 3 is determined by the suspension metal fitting 6 by the suspension metal fitting 12 having the attachment portion 12 a attached to the suspension bolt 5 and the reinforcing surface portion 12 b attached to the field receiver 3. Since it can be strengthened by a synergistic action with the suspension, the earthquake resistance of the suspended ceiling foundation structure 1 can be enhanced.
Further, since the reinforcing surface portion 12b of the reinforcing bracket 12 for the hanging metal fitting is attached to the field edge receiver 3 so that the reinforcement surface section 12b is orthogonal to the longitudinal direction of the field edge receiver 3, it is in-plane because it is made of a plate material. It is possible to improve the earthquake resistance against the rolling in the out-of-plane direction of the hanging bracket 6 that is inferior in earthquake resistance compared to the direction.

  Further, since the joint metal fitting 10 that sandwiches the rib 2b of the field edge 2 and the lower flange 3c of the field edge receiver 3 is covered with the reinforcement metal fitting 11 for the joint metal fitting, the joint strength between the field edge 2 and the field edge receiver 3 is secured. And the fall of the field edge 2 and side slipping can be prevented.

  The suspended ceiling foundation structure 1 does not need to reinforce all the suspension fittings 6 and the joining fittings 10, and the suspension fittings 6 (Q in FIG. 1) that are disposed closest to the inclined lower end side of the brace members 8 and 8. 2) and the joining metal fitting 10 (four places indicated by P in FIG. 1) disposed at a position closest to the hanging metal fitting 6 can reinforce the joining strength significantly. Thereby, earthquake resistance can be efficiently provided with a small number of parts. The rationale will be described later.

  The best embodiment according to the present invention has been described above. However, the present invention is not limited to this, and can be appropriately changed without departing from the spirit of the present invention. In the following other embodiments, description of the same components as those in the first embodiment is omitted.

<Second embodiment>
As shown in FIG. 6, the suspended ceiling foundation structure 20 according to the second embodiment is provided with joint metal fittings 21 instead of the joint metal fittings 10 according to the first embodiment, and further relates to the four places P in FIG. 6. It differs from the first embodiment in that the joint fitting 21 is reinforced with a fastener 22 such as a screw. Other configurations are substantially the same as those of the first embodiment.
As shown in FIGS. 6 (a) and 6 (b), the joining bracket 21 is attached to the hooking portion 21 a hooked and hooked on the ribs 2 b and 2 b of the field edge 2, and the base surface portion 3 a of the field edge receiver 3. It consists of a main body part 21b to be in contact with and a horizontal part 21c to be in contact with the upper side flange 3c of the field edge receiver 3. Further, in the present embodiment, a through hole 21d through which a fastener 22 such as a screw is inserted is formed substantially at the center of the main body portion 21b.

  The joint fitting 21 hangs the rib 2b of the field edge 2 on the latching part 21a and engages the horizontal part 21c with the upper side flange 3c of the field edge receiver 3 at a position where the field edge 2 and the field edge receiver 3 are orthogonal to each other. By stopping, the field edge 2 and the field edge receiver 3 can be easily joined (connected). Moreover, when reinforcing the joining metal fitting 21, it can be reinforced by fastening with a fastener 22 such as a screw from the through hole 21 d.

  In other words, the joining bracket 21 can join the field edge 2 and the field edge receiver 3 relatively easily, but since the joining form is only hooked, there is a problem that the joining strength is weak. . However, the bonding strength can be increased by fastening the main body 21 b and the base surface 3 a of the field receiver 3 with the fasteners 22. The type and number of fasteners 22 are not limited. Moreover, you may fasten the fastener 22 to the horizontal part 21c. Moreover, the shape, size, etc. of the joining metal fitting 21 are not limited.

  In the present embodiment, the suspended ceiling foundation structure 20 is reinforced by fastening the portion P with a fastener 22 as shown in FIG. In addition, at the position Q shown in FIG. 6A, the hanging bracket 6 is reinforced using the hanging bracket reinforcing bracket 12 as in the first embodiment.

  According to the ceiling foundation structure 20 according to the second embodiment, the suspension bracket 6 is reinforced by the suspension bracket reinforcement bracket 12 and the joining bracket 21 is fastened and reinforced by the fasteners 22. Bonding strength can be increased. In addition, the suspended ceiling foundation structure 20 does not need to reinforce all the suspension fittings 6 and the joining fittings 21, and the suspension fitting 6 disposed closest to the inclined lower end side of the brace members 8, 8 ( 2) of Q in a)) and the joining metal fitting 21 (four places of P in FIG. 6A) disposed at the closest position from the hanging metal fitting 6 are significantly joined as compared with the conventional case. Strength can be increased. Thereby, earthquake resistance can be efficiently provided with a small number of parts. The rationale will be described later.

<Third embodiment>
As shown in FIG. 7, the suspended ceiling foundation structure 30 according to the third embodiment has the brace material 8 and the field edge receiver 3 arranged in parallel, and the joint fitting reinforcing metal fitting 11 shown in P of FIG. 7. It differs from 1st embodiment and 2nd embodiment by the point which installs in the location and does not use the horizontal member 7 and the reinforcement metal fitting 12 for suspension metal fittings.

The brace members 8, 8 are arranged so as to exhibit a substantially V shape in a side view in a direction parallel to the field edge receiver 3, and the inclined lower end side directly to the field edge receiver 3, and the inclined upper end side to the suspension bolt 5, They are joined by welding.
In the present embodiment, unlike the first embodiment, since the brace material 8 and the field edge receiver 3 are arranged in parallel, the brace material 8 and the field edge receiver 3 can be directly joined easily. In the position P in FIG. 7, the reinforcing metal fittings 11 for the metal fittings are installed.

  That is, in the suspended ceiling foundation structure according to the present invention, the brace material 8 may be disposed in parallel with the field edge receiver 3 as in the third embodiment, or the brace material 8 as in the first embodiment. May be arranged so as to be orthogonal to the field edge receiver 3. Further, both may be used in combination.

According to the ceiling foundation structure 30 according to the third embodiment, since the joint fitting 10 is covered with the joint fitting reinforcement fitting 11, the joint strength of the ceiling foundation structure 30 can be increased. Moreover, since the inclined lower end of the brace material 8 can be directly attached to the field edge receiver 3, the brace material 8 can be easily attached to the field edge receiver 3.
Further, the suspended ceiling foundation structure 30 does not need to reinforce all of the joining fittings 10 and is arranged at a position closest to the hanging fitting 6 that is arranged closest to the inclined lower ends of the brace members 8 and 8. By merely reinforcing the joint fitting 10 (position P in FIG. 7), the joint strength can be significantly increased as compared with the conventional case. Thereby, earthquake resistance can be efficiently provided with a small number of parts. The rationale will be described later.

  Here, a static horizontal force experiment was performed to confirm the seismic performance of the suspended ceiling foundation structures 1, 20, and 30 according to the first to third embodiments, and the results are shown below.

<Summary>
The test body is mainly composed of the structures related to the suspended ceiling foundation structures 1, 20, and 30. The direction of the force applied, the presence / absence of the joining fitting 10, the joining fitting 21, the presence / absence of the joining fitting reinforcement 11, and the suspension fitting 12 Presence / absence or the like was used as a parameter. The size of the test body is 2100 mm wide × 2700 mm long, and among the field edges 2, 2... According to the test body, the portion related to W uses a wide so-called double field edge (FIG. 1). FIG. 6 (a) and FIG. 7).
As shown in FIG. 1, in the longitudinal direction of the field edge 2 of the suspended ceiling foundation structure 1, the direction of the applied force is the direction A from the bracket body 6a of the hanging bracket 6 toward the clamping surface 6d (see FIG. 12), The direction opposite to the A direction is defined as the B direction. Moreover, as shown in FIG. 7, let the longitudinal direction of the field receiver 3 of the suspended ceiling base structure 30 be a C direction.

As a method of applying force, grooved steel (not shown) was installed on the applied side edge of the suspended ceiling foundation structure 1, and the center of the grooved steel was horizontally applied with a hydraulic jack. The load level was measured using a load cell, and the displacement was measured with a dial gauge.
As shown in Table 1, ten types of test bodies were used in combination with parameters. “Screw stop” in Table 1 indicates a case where the joint metal fitting 21 is used to fasten and tighten the fastener 22 according to the second embodiment.

The test bodies A-1 and B-1 are test bodies that do not reinforce the suspended ceiling foundation structure 1 according to the first embodiment without using the joint metal fittings 11 and the metal fittings 12 for the hanging metal. (Not shown).
In the suspended ceiling foundation structure 1 according to the first embodiment, the test bodies A-2 and B-2 did not use the joining reinforcing metal fitting 11, but installed only the hanging metal fitting reinforcing metal fitting 12 at the position Q in FIG. It is a test body (not shown).
As shown in FIG. 6A, the test body A-3 is a suspended ceiling foundation structure 20 according to the second embodiment.
As shown in FIG. 1, the test bodies A-4 and B-3 are the suspended ceiling foundation structure 1 according to the first embodiment.
As shown in FIG. 7, the test body C-1 is a test body that does not reinforce the suspended ceiling foundation structure 30 according to the third embodiment without using the suspension metal fitting 11 (not shown).
In the suspended ceiling foundation structure 30 according to the third embodiment, the test body C-2 joins all the orthogonal portions of the field edge 2 and the field edge receiver 3 using the joint fitting 21, and includes the P position shown in FIG. 7. A test body reinforced with a fastener 22.
As shown in FIG. 7, the test body C-3 is a suspended ceiling foundation structure 30 according to the third embodiment.

<Experimental result>
In Table 1, “Yield strength at 10 mm displacement” indicates a load when the test specimen is deformed by 10 mm by applying force to each specimen.
In the experimental results, the specimens A-4, B-3, C-2, and C-3 are about twice or more compared to other specimens in the same force direction, considering the proof stress when the displacement is 10 mm. It proved to be the proof stress.
In addition, when comparing A-2 and A-4 and B-2 and B-3, respectively, the reinforcing bracket 11 for the joining bracket and the reinforcing bracket 12 for the hanging bracket are used in combination rather than the reinforcement of the reinforcing bracket 12 for the hanging bracket. As a result, the rigidity was greatly improved.
In addition, when A-3 and A-4 were compared, a significant improvement in rigidity was observed when the joining bracket 10 was reinforced with the joining bracket reinforcing bracket 11 rather than the joining bracket 21 being reinforced with the fastener 22. .
In addition, when C-1 and C-3 are compared, when the brace material 8 is disposed in parallel with the field edge receiver 3, a significant improvement in rigidity was observed due to the reinforcement of the reinforcing metal fitting 11 for the joint metal fitting. .

  According to the above results, the brace members 8 and 8 are disposed closest to the inclined lower ends of the brace members 8 and 8 without installing the reinforcing brackets 11 for the joint brackets at all the positions where the field edge 2 and the field edge receiver 3 are orthogonal to each other. It is only necessary to reinforce the hanging bracket 6 and the joining fitting 10 or the joining fitting 21 (positions P and Q in FIG. 1, FIG. 6 (a), FIG. 7) disposed at a position closest to the hanging fitting 6. Thus, the bonding strength can be significantly increased as compared with the conventional case. Thereby, earthquake resistance can be efficiently provided with a small number of parts.

<Fourth embodiment>
FIG. 8 is a perspective view showing a suspended ceiling foundation structure 40 according to the fourth embodiment. The suspended ceiling foundation structure 40 is characterized in that the brace members 8 and 8 are directly attached to the reinforcing bracket 12 for the hanging bracket.
As shown in FIG. 8, the in-plane direction of the reinforcing surface portion 12 b of the suspension metal fitting 12 is installed so as to be orthogonal to the longitudinal direction of the field edge receiver 3. Thereby, the brace material 8 can be directly attached in a direction orthogonal to the field edge receiver 3.
Further, as shown at a point P in FIG. 8, the joining metal fitting 11 is installed in the joining metal 10 disposed at a position closest to the hanging metal fitting 12.
According to the suspended ceiling foundation structure 40, in addition to the effects of the first embodiment, the mounting position of the brace material 8 can be lowered without using the horizontal material 7, so that the number of parts can be reduced and construction is easy. be able to.
In addition, since the structure and construction method of the reinforcement metal fitting 11 for joining metal fittings and the reinforcement metal fitting 12 for suspended ceiling metal fittings are the same as 1st embodiment, it abbreviate | omits.

Further, the reinforcing bracket for a hanging metal fitting according to the present invention may have another structure. Another embodiment of the reinforcing bracket for the hanging bracket will be described below.
<Fifth embodiment>
FIG. 9 is a perspective view showing a hanging metal fitting 50 according to the fifth embodiment. The suspension metal fitting 50 has a pair of reinforcement surface portions 50b and 50b formed perpendicularly from both ends of the attachment portion 50a, and a frame attachment piece portion 50d projecting outward from the reinforcement surface portions 50b and 50b. , 50d.
As shown in FIGS. 9 and 10, the mounting portion 50 a is formed with a bolt mounting portion 50 f opened in a substantially U shape in plan view that is released to the one side edge of the short side. The bolt mounting portion 50f is formed so as to be attached to the suspension bolt 5 while being sandwiched between the attachment portion 6c of the suspension fitting 6 and the nuts 12g, 12g.
The reinforcing surface portion 50b is formed to be bent in parallel from both long edges of the mounting portion 50a at an interval substantially equal to the plate width of the metal fitting main body portion 6a (see FIG. 12) of the hanging metal fitting 6 so that the hanging metal fitting 6 is in the in-plane direction. It is formed so as to be sandwiched from both sides. The reinforcing surface portion 50b is formed in a wide shape so as to be orthogonal to the longitudinal direction of the field receiver 3 and to join the horizontal material 7 (not shown) or the brace material 8.

  According to the suspension metal fitting 50, in addition to the effect of the suspension metal reinforcement 12 according to the first embodiment, the suspension metal 6 is reinforced so as to wrap the suspension metal 6. Therefore, the connection strength with the suspension metal 6 is increased. Can be increased. Moreover, the attachment strength with the field edge receiver 3 can be raised by having two frame attachment piece parts 50d.

  As shown in FIG. 10, the hanging bracket reinforcing bracket 50 is formed to be narrower than the reinforcing surface portion 12 b of the hanging bracket reinforcing bracket 12 according to the first embodiment. You may make it fit in the width | variety of the upper side flange 3b, without straddling the notch part 50c along 3b completely. That is, the width of the reinforcing surface portion 50b may be set as appropriate according to the required strength and the like. Further, the reinforcing surface portions 12b, 12b may be bent so as to gradually spread downward from the mounting portion 50a.

1 is an overall perspective view showing a suspended ceiling foundation structure according to a first embodiment. It is the perspective view which showed the reinforcement metal fitting for joining metal fittings which concerns on 1st embodiment, and the reinforcement metal fitting for suspension metal fittings. It is the disassembled perspective view which showed the reinforcement metal fitting for joining metal fittings which concerns on 1st embodiment. It is the perspective view which showed the reinforcement metal fitting for suspension metal fittings which concerns on 1st embodiment. It is the figure which showed the attachment state of the reinforcement metal fitting for suspension metal fittings which concerns on 1st embodiment, Comprising: (a) is a front view, (b) shows a side view. It is the figure which showed the suspended ceiling base structure which concerns on 2nd embodiment, Comprising: (a) is a fragmentary perspective view, (b) is an expansion perspective view of a joining metal fitting. It is the whole perspective view which showed the suspended ceiling foundation structure concerning a third embodiment. It is the perspective view which showed the suspended ceiling base structure which concerns on 4th embodiment. It is the perspective view which showed the reinforcement metal fitting for suspension metal fittings which concerns on 5th embodiment. It is the perspective view which showed the attachment state of the reinforcement metal fitting for suspension metal fittings which concerns on 5th embodiment. It is the perspective view which showed the attachment state of the conventional hanging bracket. It is the figure which showed the conventional hanging metal fitting, Comprising: (a) is a perspective view, (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suspended ceiling base structure 2 Field edge 2a Rib 2b Side flange 3 Field edge receiver 3a Base surface part 3b Upper flange 3c Lower edge flange 4 Ceiling structure frame 5 Suspension bolt 6 Suspension metal 7 Horizontal material 8 Brace material 10 Joining metal 10a Upper board 10b Lower plate 11 Reinforcing bracket for joining metal 11a Flat plate 11b Side plate 12 Reinforcing bracket for hanging metal 12a Mounting portion 12b Reinforcing surface portion 12c Notch portion 12d Frame mounting piece portion 12e Locking piece portion

Claims (8)

With multiple field edges,
A plurality of field receivers disposed orthogonal to the field edge;
A joint fitting that joins the field edge and the field edge receiver at a right angle;
A plurality of suspension bolts for suspending the field receiver;
A suspension fitting that is installed on the front end side of the suspension bolt and connects the edge receiver and the suspension bolt;
Reinforcing bracket for hanging bracket that reinforces this hanging bracket,
A suspended ceiling foundation structure having a brace material disposed in a direction perpendicular to the field edge receiver,
The reinforcing bracket for the hanging bracket is
An attachment portion attached to the suspension bolt; a member attachment portion to which the brace material is attached; and a reinforcing surface portion attached to the field edge receiver perpendicular to the longitudinal direction of the field edge receiver,
The brace material is
The suspended ceiling foundation structure characterized in that the member mounting portion and the suspension bolt are connected obliquely. With multiple field edges,
A plurality of field receivers disposed orthogonal to the field edge;
A joint fitting that joins the field edge and the field edge receiver at a right angle;
A plurality of suspension bolts for suspending the field receiver;
A suspension fitting that is installed on the front end side of the suspension bolt and connects the edge receiver and the suspension bolt;
Reinforcing bracket for hanging bracket that reinforces this hanging bracket,
A horizontal member connecting the two reinforcing brackets for the hanging bracket,
A suspended ceiling foundation structure having a brace material disposed in a direction perpendicular to the field edge receiver,
The reinforcing bracket for the hanging bracket is
An attachment portion attached to the suspension bolt; a member attachment portion to which the horizontal member is attached; and a reinforcing surface portion attached to the field edge receiver perpendicular to the longitudinal direction of the field edge receiver,
The brace material is
A suspended ceiling foundation structure, wherein the horizontal member and the suspension bolt are connected obliquely. The field edge is made of channel steel with a pair of side flanges having ribs,
The field edge receiver is made of channel steel having an upper side flange and a lower side flange that extend horizontally from both ends of a base surface portion suspended from the field edge,
The joint fitting is
A latching portion latched on the rib;
A main body plate portion in contact with the base surface portion;
A horizontal portion that is in contact with the upper flange,
The suspended ceiling foundation structure according to claim 1 or 2, wherein at least one of the main body plate portion and the horizontal portion is fastened by the field receiver and a fastener. The field edge is made of channel steel with a pair of side flanges having ribs,
The field edge receiver is made of channel steel having an upper side flange and a lower side flange that extend horizontally from both ends of a base surface portion suspended from the field edge,
The joint fitting is
An upper plate that comes into contact with the lower flange from above;
A lower plate in contact with the rib from below;
The suspended ceiling foundation structure according to claim 1 or 2, further comprising: a holding tool that holds the upper plate and the lower plate.
A flat plate clamped by the clamp together with the upper plate and the lower plate;
A suspended ceiling foundation structure, further comprising: a reinforcing metal fitting for a joint metal fitting, which is formed vertically from both ends of the flat plate and is joined to the side flange.   The suspended ceiling foundation structure according to claim 4, wherein the side plate includes a slit having a gap substantially equal to a thickness of the lower side flange and fitted into the lower side flange.   The suspended ceiling foundation structure according to any one of claims 1 to 5, further comprising a brace member disposed in a direction parallel to the field edge receiver and connecting the field edge receiver and the suspension bolt obliquely. Joined at the intersection of a field edge made of channel steel with a pair of side flanges having ribs and a field edge receiver made of channel steel with a lower flange extending horizontally from one end of the base surface And an upper plate abutted from above the lower flange, a lower plate abutted from below the lower flange, the upper plate, and a clamping tool for sandwiching the lower plate. Reinforcing metal fittings for joining metal fittings,
A flat plate clamped by the clamp together with the upper plate and the lower plate;
A reinforcing metal fitting for a connecting metal fitting, comprising: a side plate formed vertically from both ends of the flat plate and joined to the side flange.   The reinforcing metal fitting for a joint metal fitting according to claim 7, wherein the side plate includes a slit having a gap substantially equal to the thickness of the lower flange, and fitted into the lower flange.

Images