JP2019094650A - Ceiling substrate structure - Google Patents

Abstract

To provide a ceiling substrate structure excellent in safety capable of preventing a ceiling material and a frame material from falling by swingingly moving, by tightly fixing mutual cross frame materials, by improving structural strength of a connection metal fitting.SOLUTION: A ceiling substrate structure comprises a first frame material 3, a second frame material 4 and a connection metal fitting 5 for connecting a crossing part of both frame materials. The connection metal fitting 5 is constituted of a metal fitting body 31 and a fastening body 32, and is formed in a hat shape by a pair of leg part walls 33, a fastening seat 34 and a pair of hauling seats 35. The fastening body 32 comprises a screw body 41 and a pressing body 42 fixed to the screw shaft end. In a state of connecting the crossing part of both frame material 3, 4 by the connection metal fitting 5, the pressing body 42 of the fastening body 32 is brought into pressure contact with the first frame material 3, the hauling seats 35 of the metal fitting body 31 engage with an inner surface of the same wall 23 in a state of longitudinally bridging a pair of lip walls 23 of the second frame material 4, and the second frame material 4 is fixed by hauling to the first frame material 3 side.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ceiling base structure configured to support ceiling materials, which is configured of lightweight metal frames that cross each other.

  In a ceiling structure using a lightweight metal frame member, in many cases, a connecting metal fitting is used to fasten the intersection of a first frame member fixed and supported by a suspension bolt or the like and a second frame member disposed on the lower surface thereof. The base structure is formed, and the ceiling board is supported by the second frame material to form a ceiling. A ceiling foundation structure of this type is known, for example, in Patent Document 1, in which a field rim (second frame material) is disposed on the lower surface of a field rim support (first frame material) fixed and supported by a suspension bolt, Fastening and fixing both of the crossing points with a fitting (connection fitting). The fixture is screwed into the substrate perpendicular to the upper surface of the flange, a pair of attachment pieces bent continuously on both sides of the substrate, a hook portion bent laterally from the lower end of the attachment piece, and the substrate It has a bolt. The opposite surface of the mounting piece is formed with a longitudinally extending engaging groove for engaging with the rim, and the front edge and the rear edge of the engaging groove face the front and rear surfaces of the rim. When the field edge is fixed to the field edge holder, the engaging groove of the fixture is engaged with the field edge ring from above, and the four legs separated by the engaging groove are elastically deformed in the direction to approach each other In the state where it is made to be inserted, it inserts in the inside of the field edge, and each leg piece is returned to its free state by its own elasticity, and the hook portion is engaged with the engagement portion of the field edge. In this state, by screwing in the bolt, the field edge is pulled toward the side of the field edge and fixed. The ceiling panel is fixed directly to the underside of the field edge.

CD-ROM of Japanese Patent Application No. 4-16473 (Japanese Utility Model Application Publication No. 05-67719)

  In the fixture of Patent Document 1, the four legs separated by the engagement groove can be inserted into the inside of the field edge in a state of being elastically deformed in the direction in which they approach each other. Can be done quickly. However, in the mounting tool of Patent Document 1, since the vertically long engaging groove that engages with the front and rear surfaces of the edge support is formed at the center of the plate surface of the mounting piece, the structural strength of the mounting tool is low. Specifically, since the mounting piece is constituted by a total of four elongated legs which can be elastically deformed divided by the engaging groove, the leg pieces are easily elastically deformed in the thickness direction along the front and rear surfaces of the rim. Therefore, even if the fixture is fastened and fixed to the flange with a bolt, when a large external force acts on the flange and the ceiling panel due to an earthquake etc., each leg piece elastically deforms and the flange and the ceiling panel shakes greatly. There is a risk of falling.

  SUMMARY OF THE INVENTION The object of the present invention is to improve the structural strength of the connection fitting and to securely fix the cross frame members, and to prevent the ceiling member and the frame member from swinging and falling even when a large external force acts on the ceiling member. It is to provide a ceiling base structure excellent in safety.

  The present invention is a ceiling foundation structure for supporting the ceiling material 7, and the second frame is disposed so as to intersect the first frame material 3 supported by the suspension bolt 1 and the first frame material 3. The connecting fitting 5 is provided to connect the intersections of the member 4 and the first frame member 3 and the second frame member 4. The second frame member 4 is formed of a lip channel steel provided with a pair of lip walls 23, and the lip walls 23 are cross-arranged in a state of being in contact with the first frame member 3. The connection fitting 5 is composed of a fitting main body 31 and a fastening body 32. The metal fitting body 31 has a pair of leg walls 33 sandwiching the first frame member 3, a fastening seat 34 for bridging the first frame member 3 by connecting one end portions of the leg walls 33, and each leg wall 33. It is formed in a hat shape by a pair of pull-in seats 35 which are bent and formed on the other end side. The fastening body 32 includes a screw main body 41 screwed into the fastening seat 34, and a pressing body 42 fixed to the screw shaft end of the screw main body 41. Then, in a state in which the intersections of the first frame member 3 and the second frame member 4 are connected by the connection fitting 5, the pressing body 42 of the fastening body 32 is in pressure contact with the first frame member 3, In a state of bridging the pair of lip walls 23 of the second frame member 4 back and forth, 35 engages with the inner surface of the same wall 23 and pulls the second frame member 4 toward the first frame member 3 and fixes it. It is characterized by

  The second frame member 4 includes a pair of vertical walls 21, an end wall 22 connecting one end of the vertical walls 21, and a pair of lip walls 23 continuously bent inward to the other end of the vertical wall 21. It is formed of the provided lip channel steel. A groove wall 24 for enhancing the structural strength of the second frame member 4 is formed so as to expand inward on the pair of vertical walls 21 of the second frame member 4 so that a slide groove is formed between the groove wall 24 and the lip wall 23 25 are formed. The pull-in seat 35 of the fitting body 31 is engaged with the slide groove 25 so as to be relatively slidable.

  The longitudinal width dimension B of the leg wall 33, the fastening seat 34 and the pulling seat 35 is set larger than the opening width b2 of the opening 27 between the pair of lip walls 23 of the second frame member 4. The leg wall 33 and the pull-in seat 35 are formed narrower than the opening width b2 and are continuous through the guide wall 37 which is relatively slidable along the opening 27.

  The first frame member 3 is made of lip channel steel provided with a lip wall 13 having the same structure as that of the second frame member 4. The first frame member 3 is supported by the clamp fitting 2 attached to the suspension bolt 1 with the lip wall 13 facing downward. The intersection of the first frame member 3 and the second frame member 4 disposed on the upper surface of the first frame member 3 is connected by the connection fitting 5 mounted from the lower surface side of the first frame member 3.

  The fastening body 32 is composed of a butterfly bolt 41 provided with an operation knob 43 and a disc-like pressing body 42 fixed to the screw shaft end of the butterfly bolt 41. The diameter D of the pressing body 42 is set to be larger than the opening width b1 of the opening 17 of the first frame member 3 and smaller than the lateral width C of the first frame member 3.

  In the ceiling base structure in the present invention, the fitting body 31 of the connection fitting 5 is formed in a hat shape by the pair of leg walls 33, the fastening seat 34, and the pair of pulling seats 35, as compared with the conventional attachment. The structural strength of the metal fitting body 31 can be improved. Further, in a state in which both frame members 3 and 4 are connected by the connection fitting 5, the drawing seat 35 of the fitting main body 31 and the pair of lip walls 23 of the second frame member 4 are bridged back and forth. The second frame member 4 can be firmly pulled to and fixed to the side of the first frame member 3 by engaging with the inner surface of 23. According to such a ceiling base structure, the front-rear width of the pull-in seat 35 can be made sufficiently large, and the connection strength between the metal fitting body 31 and the second frame member 4 can be enhanced. Further, since the pair of leg walls 33 of the metal fitting main body 31 is provided in the state of sandwiching the first frame member 3 to the left and right, an external force in the direction along the longitudinal direction of the first frame member 3 is applied to the second frame member 4. When acting, the pair of leg walls 33 can be reliably prevented from being deformed by an external force, and the intersecting first frame member 3 and second frame member 4 can be firmly fixed by the connection fitting 5. Therefore, even when a large external force acts on the second frame member 4 and the ceiling member 7, the ceiling structure is provided with excellent safety that can prevent the second frame member 4 and the ceiling member 7 from swinging and falling. it can.

  The second frame member 4 is formed of a lip grooved steel, and a slide groove 25 is provided between the reinforcing groove wall 24 formed on the vertical wall 21 and the lip wall 23, and a pull-in seat 35 of the fitting main body 31. Relative slideably engaged with the slide groove 25. As described above, when the pull-in seat 35 is engaged with the slide groove 25, the second frame member 4 and the connection fitting 5 are prevented from moving in the front-rear direction or the vertical direction with each other in the temporarily assembled state. The material 4 can be freely moved laterally with respect to the first frame material 3. Further, in a state in which the second frame member 4 is engaged with the connection fitting 5, the second frame member 4 is supported by the connection fitting 5 or the connection fitting 5 is supported by the second frame member 4. It is not necessary to keep supporting the second frame member 4 and the connection fitting 5. Therefore, it is possible to efficiently carry out a series of operations required for assembling the ceiling base structure, such as temporary assembly, positioning, and fastening and fixing of the second frame member 4 to the first frame member 3.

  If the front and rear width dimensions B of the leg wall 33, the fastening seat 34, and the drawing seat 35 are set larger than the opening width b2 of the opening 27 of the second frame member 4, for example, the leg wall 33 and the fastening seat 34 Compared with the case where the front and rear width dimension B is set equal to or smaller than the opening width b2, the structural strength of the metal fitting main body 31 is greatly enhanced and the second frame member 4 is further strongly connected by the connecting metal fitting 5. It can be fixed. Further, since the leg wall 33 and the pull-in seat 35 are continued through the guide wall 37 narrower than the opening width b2, the relative sliding between the second frame member 4 and the fitting body 31 is performed without any problem. It is possible to reduce the time and effort of construction of the ceiling base structure.

  The first frame member 3 made of lip channel steel is supported by the clamp 2 attached to the suspension bolt 1 with the lip wall 13 facing downward, and the second frame member 4 disposed on the upper surface of the frame member 3 The intersections of the two are connected by the connection fitting 5 mounted from the lower surface side of the first frame member 3. According to such a ceiling base structure, the weight of the second frame member 4 in the temporarily assembled state can be supported by the first frame member 3, so positioning of the second frame member 4 with respect to the first frame member 3 and fastening of the connection fitting 5 It is possible to improve safety and workability when performing assembly work such as fixing. In addition, even if the fastening members 32 of some of the connection fittings 5 loosen for some reason after construction, the second frame member 4 and the ceiling member 7 fall after construction because the second frame member 4 does not fall suddenly. Has the advantage of improving safety by preventing accidents. Furthermore, when the connection fitting 5 is mounted from the lower surface side of the first frame member 3, the fastening body 32 is exposed to the lower surface side of the connection fitting 5, so that the connection fitting 5 is formed on the upper surface side of the first frame member 3 In comparison with the above, the fastening work of the fastening body 32 can be efficiently performed from the side of the scaffold assembled below the ceiling base structure in a comfortable posture.

  The fastening body 32 is configured by the butterfly bolt 41 and the disc-like pressing body 42, and the diameter D of the pressing body 42 is set to be larger than the opening width b1 and smaller than the lateral width C of the first frame member 3. According to such a connection fitting 5, the fastening force of the butterfly bolt 41 is reliably transmitted to the first frame member 3 compared with the case where the screw shaft end of the butterfly bolt 41 is directly pressure-welded to the first frame member 3. The frame member 4 can be firmly drawn and fixed by the drawing seat 35. In addition, since the pressing body 42 does not protrude from the left and right side edges of the first frame member 3 in a state in which the crossing portions of both frame members 3 and 4 are connected by the connection fitting 5, the opposing width of the leg wall 33 is minimized. It is possible to miniaturize the fitting body 31 by limiting.

It is a vertical side view which shows the principal part structure of the ceiling base structure which concerns on Example 1 of this invention. It is a perspective view of only the principal part of the ceiling base structure concerning the present invention. It is a disassembled perspective view of a 1st frame material, a 2nd frame material, and a connection metal fitting. It is a disassembled sectional view which shows the related structure of a fastening body and a metal fitting main body. It is the sectional view on the AA line in FIG. It is a six view of a connection metal fitting, and a sectional view. It is a perspective view which shows the principal part structure of the ceiling base structure which concerns on Example 2 of this invention.

(Example 1) Example 1 of the ceiling base structure concerning this invention is shown in FIGS. 1-6. In the present invention, front / rear, left / right, and upper / lower follow the cross arrow shown in FIG. 2 and the front / rear / left / right / upper / lower notation near the cross arrow. In FIG. 2, the ceiling base structure for supporting the ceiling board (ceiling material) 7 is cross-arranged with the first frame 3 fixedly supported by the clamp fitting 2 attached to the suspension bolt 1 and the upper surface of the first frame 3 By the second frame member 4 to be connected, the connection fitting 5 for connecting the intersection of the first frame member 3 and the second frame member 4, and the suspension body 6 for the ceiling board 7 fixed to the second frame member 4 Configured

  In FIG. 3, the first frame member 3 and the second frame member 4 are made of the same shape and the same size lip channel steel made of a steel plate having a thickness of 1.6 mm, and include a pair of vertical walls 11 and 21 and a vertical wall The end walls 12 and 22 connecting the end portions of 11 and 21 and the lip walls 13 and 23 bent inward continuously with the vertical walls 11 and 21 are formed in a C-shaped cross section. Groove walls 14 and 24 are formed on the vertical walls 11 and 21 in the vicinity of the lip walls 13 and 23 so as to expand inward in order to enhance the structural strength, and the groove walls 14 and 24 and the lip walls 13 and 23 are formed. Between these, slide grooves 15 and 25 that slide relative to a suction seat 35 described later are formed. Further, bolt insertion holes 16 and 26 are formed in the end walls 12 and 22 at regular intervals. The lip walls 13 and 23 face each other across the openings 17 and 27.

  The connection fitting 5 is constituted by a fitting main body 31 and a fastening body 32 which are formed by bending a steel plate having a thickness of 2.0 mm as a material. The metal fitting body 31 includes a pair of left and right leg walls 33, a fastening seat 34 connecting lower ends of the leg walls 33, and a pair of pull-ups formed so as to be separated from the upper ends of the left and right leg walls 33. The seat 35 is formed in a hat shape. At the center of the fastening seat 34, a screw hole 36 for screwing in the fastening body 32 is formed. A guide wall 37 having a width narrower than the opening width b2 of the opening 27 of the second frame member 4 is formed on the upper portion of the leg wall 33, and the pull-in seat 35 is formed by bending the middle portion of the guide wall 37. Are orthogonal to the leg wall 33. The opposing distance between the pair of leg walls 33 is set to be slightly larger than the lateral width C of the first frame member 3. Further, the leg wall 33, the fastening seat 34 and the pulling seat 35 are formed to have the same width, and the front and rear width dimension B is larger than the opening width b2 of the opening 27 and smaller than the groove width of the slide groove 25 by the allowance size. It is set.

  The fastening body 32 is composed of a butterfly bolt (screw main body) 41 and a disc-like pressing body 42 fixed to the screw shaft end of the butterfly bolt 41, and the operation head of the butterfly bolt 41 has a pair of operation knobs 43 are formed. The fastening body 32 and the fitting main body 31 of the pressing body 42 to which the screw shaft end is coated with an anaerobic adhesive in a state where the screw shaft of the butterfly bolt 41 is screwed into the screw hole 36 of the fastening seat 34 in a penetrating manner. The screw holes 44 (see FIG. 4) are integrated by screwing and fixing. Thus, according to the connection fitting 5 in which the fastening body 32 is assembled inseparably to the fitting main body 31, separation of the fastening body 32 from the fitting main body 31 can be reliably prevented at the construction site of the ceiling. . The pressing body 42 is made of a brass turning product, and the surface thereof is plated.

  When the diameter of the screw shaft of the wing bolt 41 is 8 mm, the diameter dimension D of the pressing body 42 is set to 16 mm and is set larger than the opening width b1 (11 mm) of the opening 17 of the first frame member 3 . Further, in the fastened state, in order to prevent the pressing body 42 from protruding from the left and right side edges of the first frame member 3, the diameter dimension D of the pressing body 42 is set smaller than the left and right width C (25 mm) of the first frame member 3. It is done. Thus, when the pressing body 42 having a diameter larger than that of the screw shaft is fixed to the screw shaft end of the butterfly bolt 41, as compared with the case where the screw shaft end of the butterfly bolt 41 is directly pressure-welded to the first frame member 3, The fastening force of the butterfly bolt 41 can be reliably transmitted to the first frame member 3 so that the second frame member 4 can be pulled and fixed firmly by the pull-in seat 35. In addition, since the pressing body 42 does not protrude from the left and right side edges of the first frame member 3 in a state in which the crossing portions of both frame members 3 and 4 are connected by the connection fitting 5, the opposing width of the leg wall 33 is minimized. It is possible to miniaturize the fitting body 31 by limiting. Furthermore, even when the pressing body 42 is pressed against the first frame member 3 in a state in which the pressing body 42 faces the lip wall 13, the pressing body 42 is received by the lip wall 13 and the fastening force of the butterfly bolt 41 is set to the first frame 3 I can tell you surely.

  In FIG. 2, the suspension body 6 is a suspension bolt 46 inserted into the bolt insertion hole 26 of the second frame member 4, and two nuts 47 screwed into the bolt 46 and fastened to the second frame member 4. And a board holder 48 fixed to the lower end of the suspension bolt 46 and supporting the lower surface of the ceiling board 7 or the like.

  As described above, the first frame member 3 is supported by the clamp 2 attached to the suspension bolt 1 so as to be adjustable in the vertical position, and the first frame 3 adjacent in the longitudinal direction is not shown. Are linked by The first frame member 3 in this state is supported at regular intervals with the lip wall 13 facing downward. When the second frame member 4 is fixed to the first frame member 3, the second frame member 4 is placed in a state of being intersected with the upper surface of the first frame member 3 and roughly positioned. Further, in the connection fitting 5, the fastening body 32 is loosened in advance to position the pressing body 42 in the vicinity of the fastening seat 34.

  Next, with the pair of leg walls 33 sandwiching the left and right vertical walls 11 of the first frame member 3 and the fastening seat 34 straddles the lower surface of the first frame member 3 laterally, the connection fitting 5 is used as a first frame member 3. Assemble the lower frame 3 from the lower surface side, engage the slide groove 25 of the second frame member 4 with the pull-in seat 35 of the connection fitting 5, and temporarily assemble the second frame member 4 and the connection fitting 5. Similarly, the slide groove 25 of the second frame member 4 is engaged with the pull-in seat 35 of the connection fitting 5 assembled to the adjacent first frame member 3 one after another, and a predetermined number of connection fittings 5 are 2 Support by frame 4 The second frame members 4 adjacent in the longitudinal direction are connected by joint fittings not shown. As described above, when the pull-in seat 35 is engaged with the slide groove 25, the second frame member 4 and the connection fitting 5 are prevented from moving in the front-rear direction or the up-down direction in the temporarily assembled state. The frame member 4 can be freely moved laterally with respect to the first frame member 3. In addition, since the connection fitting 5 is supported by the second frame member 4 in a state in which the second frame member 4 is engaged with the connection fitting 5, it is not necessary to keep supporting the connection fitting 5 at the time of temporary assembly. Therefore, it is possible to efficiently carry out a series of operations required for assembling the ceiling base structure, such as temporary assembly, positioning, and fastening and fixing of the second frame member 4 to the first frame member 3.

  In a state where the temporarily assembled second frame member 4 is positioned with respect to the first frame member 3, the fastening body 32 is screwed in to press the pressing body 42 against the lip wall 13 of the first frame member 3. The second frame member 4 is fixed to the first frame member 3 by pulling the first frame member 3 with the connection fitting 5. Similarly, by fixing the group of second frame members 4 to the first frame member 3, the ceiling base structure can be completed. Finally, the ceiling board 7 is suspended and supported by the suspension bolts 46 inserted into the bolt insertion holes 26 of the second frame member 4 and fastened by the nuts 47 to complete the ceiling structure. In addition, if necessary, in the process of suspending and supporting the ceiling board 7, a signboard or the like may be attached to the second frame 4 or a support frame that is disposed to cross the second frame 4. It can be suspended and supported.

  As described above, according to the ceiling base structure according to the first embodiment in which the first frame member 3 and the second frame member 4 are connected and fixed by the connection fitting 5 mounted from the lower surface side of the first frame member 3 Since the weight of the second frame member 4 in the state can be supported by the first frame member 3, safety in the case of performing an assembly operation such as positioning of the second frame member 4 with respect to the first frame member 3 or fastening and fixing the connection fitting 5. Can improve the quality and work efficiency. In addition, even if the fastening members 32 of some of the connection fittings 5 loosen for some reason after construction, the second frame member 4 and the ceiling member 7 fall after construction because the second frame member 4 does not fall suddenly. Has the advantage of improving safety by preventing accidents. Furthermore, when the connection fitting 5 is mounted from the lower surface side of the first frame member 3, the fastening body 32 is exposed to the lower surface side of the connection fitting 5, so that the connection fitting 5 is formed on the upper surface side of the first frame member 3 In comparison with the above, the fastening work of the fastening body 32 can be efficiently performed from the side of the scaffold assembled below the ceiling base structure in a comfortable posture.

  In the ceiling base structure according to the first embodiment, the fitting body 31 is formed in a hat shape by the pair of leg walls 33, the fastening seat 34, and the pair of pulling seats 35, and the fitting body is compared to the conventional fixture. It was possible to improve the structural strength of 31. Further, in a state in which both frame members 3 and 4 are connected by the connection fitting 5, the drawing seat 35 of the fitting main body 31 and the pair of lip walls 23 of the second frame member 4 are bridged back and forth. The second frame member 4 can be firmly pulled to and fixed to the side of the first frame member 3 by engaging with the inner surface of 23. According to such a ceiling base structure, the front-rear width of the pull-in seat 35 can be made sufficiently large, and the connection strength between the metal fitting body 31 and the second frame member 4 can be enhanced. Further, since the pair of leg walls 33 of the metal fitting main body 31 is provided in the state of sandwiching the first frame member 3 to the left and right, an external force in the direction along the longitudinal direction of the first frame member 3 is applied to the second frame member 4. When acting, the pair of leg walls 33 can be reliably prevented from being deformed by an external force, and the intersecting first frame member 3 and second frame member 4 can be firmly fixed by the connection fitting 5. Therefore, even if a large external force acts on the second frame member 4 and the ceiling member 7, the ceiling foundation structure with excellent safety can prevent the second frame member 4 and the ceiling member 7 from swinging and falling. Can be provided.

(Example 2) The connection structure of the cross frame material in the ceiling base structure concerning Example 2 of this invention is shown in FIG. In the second embodiment, as in the first embodiment, the first frame member 3 is supported by the clamp fitting mounted on a suspension bolt (not shown) in a state where the lip wall 13 is directed downward. Further, the intersection of the first frame member 3 and the second frame member 4 disposed on the lower surface of the first frame member 3 is connected by the connection fitting 5 mounted from the upper surface side of the first frame member 3. The other parts are the same as the ceiling base structure described in the first embodiment, so the same reference numerals are given to the same members and the description thereof will be omitted.

  In the ceiling base structure according to the second embodiment, when the second frame member 4 is assembled to the first frame member 3, the plurality of connection fittings 5 are attached to the first frame member 3 from the upper surface side, and the second frame The slide groove 25 of the member 4 is engaged with the pull-in seat 35 of the metal fitting body 31 so that the lip walls 13 and 23 of the two frame members 3 and 4 face each other. Similarly, when the second frame member 4 is engaged with the required number of connection fittings 5, the fastening body 32 is screwed in a state in which the second frame member 4 is positioned with respect to the first frame member 3. 42 is brought into pressure contact with the end wall 12 of the first frame member 3, and the second frame member 4 is pulled and fixed to the first frame member 3 by the connection fitting 5. Similarly, by fixing the group of second frame members 4 to the first frame member 3, the ceiling base structure can be completed. Thereafter, as in the first embodiment, the ceiling board 7 is suspended and supported by the supporting members 6 fixed to the second frame member 4 to complete the ceiling structure.

  According to the ceiling base structure of the second embodiment configured as described above, in the state where the first frame member 3 and the second frame member 4 are connected by the connection fitting 5, the connection fitting 5 is on the upper surface side of the second frame member 4 The vertical distance between the second frame member 4 and the ceiling board 7 can be reduced. If necessary, the ceiling board 7 can be directly fixed to the lower surface of the second frame member 4 to realize downsizing of the supporting body 6 and simplification of the structure. Further, since the fitting main body 31 can be temporarily assembled to the first frame member 3 in advance, after the second frame member 4 is engaged with the first and second fitting main bodies 31, the second frame The weight of the member 4 can be borne by the first frame member 3 so that the subsequent temporary assembling operation of the second frame member 4 with respect to the first frame member 3 can be easily performed.

  In the first embodiment, the first frame member 3 is supported by the suspension bolt 1 at regular intervals in a state where the lip wall 13 faces downward, but this is not necessary. The frame member 3 may be supported by the suspension bolt 1. Further, it is advantageous to form the first frame member 3 and the second frame member 4 with the lip channel steel of the same structure, in that the material cost of the ceiling structure can be reduced, but if necessary, the first frame member 3 The frame may be formed of a frame different in structure from the second frame 4. The screw body 41 does not have to be a wing bolt, and may be a screw that can be tightened with a power tool such as a hexagonal bolt or a small screw or a hexagonal socket bolt.

DESCRIPTION OF SYMBOLS 1 Suspension bolt 2 Clamp metal fitting 3 1st frame material 4 2nd frame material 5 Connection metal fitting 6 Suspension body 7 Ceiling board (ceiling material)
11 vertical wall 12 end wall 13 lip wall 14 groove wall 15 slide groove 17 opening 21 vertical wall 22 end wall 23 lip wall 24 groove wall 25 slide groove 27 opening 31 bracket main body 32 fastening body 33 leg wall 34 fastening seat 35 pulling Seat 37 Guide wall 41 Butterfly bolt (screw body)
42 pressing body 43 operation control

The present invention is a ceiling foundation structure for supporting the ceiling material 7, and the second frame is disposed so as to intersect the first frame material 3 supported by the suspension bolt 1 and the first frame material 3. The connecting fitting 5 is provided to connect the intersections of the member 4 and the first frame member 3 and the second frame member 4. The second frame member 4 is formed of a lip channel steel provided with a pair of lip walls 23, and the lip walls 23 are cross-arranged in a state of being in contact with the first frame member 3. The connection fitting 5 is composed of a fitting main body 31 and a fastening body 32. The metal fitting body 31 has a pair of leg walls 33 sandwiching the first frame member 3, a fastening seat 34 for bridging the first frame member 3 by connecting one end portions of the leg walls 33, and each leg wall 33. It is formed in a hat shape by a pair of pull-in seats 35 which are bent and formed on the other end side. The fastening body 32 includes a screw main body 41 screwed into the fastening seat 34, and a pressing body 42 fixed to the screw shaft end of the screw main body 41 . In a state where the intersections of the first frame member 3 and the second frame member 4 are connected by the connection fitting 5, the pressing body 42 of the fastening body 32 is in pressure contact with the first frame member 3, and the pull-in seat 35 of the fitting main body 31 The second frame member 4 is engaged with the inner surface of the second frame member 4 in the state of bridging the pair of lip walls 23 of the second frame member 4 back and forth to pull the second frame member 4 toward the first frame member 3 and fix it. Ru. The longitudinal width dimension B of the leg wall 33, the fastening seat 34 and the pulling seat 35 is set larger than the opening width b2 of the opening 27 between the pair of lip walls 23 of the second frame member 4. The leg wall 33 and the pull-in seat 35 are formed narrower than the opening width b2 and are continuous through the guide wall 37 which is relatively slidable along the opening 27.

Claims (5)

A ceiling foundation structure for supporting a ceiling material (7), wherein the ceiling foundation structure intersects the first frame material (3) supported by the suspension bolt (1) and the first frame material (3) A second frame member (4) and a connection fitting (5) for connecting the intersection of the first frame member (3) and the second frame member (4),
The second frame member (4) is formed of a lip channel steel provided with a pair of lip walls (23), and is cross-arranged with the lip wall (23) in contact with the first frame member (3) Yes,
The connection fitting (5) is composed of a fitting body (31) and a fastening body (32),
The metal fitting body (31) spans the first frame member (3) by connecting the pair of leg walls (33) sandwiching the first frame member (3) to one end of the leg wall (33). It is formed in a hat shape by a fastening seat (34) and a pair of pull-in seats (35) bent and formed on the other end side of each leg wall (33),
The fastening body (32) includes a screw body (41) screwed into the fastening seat (34), and a pressing body (42) fixed to the screw shaft end of the screw body (41),
In a state in which the intersections of the first frame material (3) and the second frame material (4) are connected by the connection fitting (5), the pressing body (42) of the fastening body (32) is the first frame material (3) Press-fit, the pull-in seat (35) of the metal fitting body (31) engages with the inner surface of the second frame member (4) with the pair of lip walls (23) bridged back and forth And the second frame member (4) is drawn close to the first frame member (3) and fixed. The second frame member (4) continues inward to the pair of vertical walls (21), an end wall (22) connecting one end of the vertical walls (21), and the other end of the vertical walls (21). Formed of lip channel steel with a pair of lip walls (23) bent into two
A groove wall (24), which enhances the structural strength of the second frame member (4), is formed so as to expand inward on the pair of vertical walls (21) of the second frame member (4), and the groove wall (24) A slide groove (25) is formed between the and the lip wall (23),
The ceiling base structure according to claim 1, wherein the pull-in seat (35) of the fitting body (31) is engaged with the slide groove (25) so as to be relatively slidable. The front and rear width dimensions (B) of the leg wall (33), the fastening seat (34) and the drawing seat (35) are the openings (27) between the pair of lip walls (23) of the second frame member (4) Is set larger than the opening width (b2) of
The leg wall (33) and the pull-in seat (35) are formed narrower than the opening width (b2) and are continued through the relative slidable guide wall (37) along the opening (27) The ceiling base structure according to claim 1 or 2. The first frame material (3) is made of lip channel steel with a lip wall (13) of the same structure as the second frame material (4),
The first frame member (3) is supported by the clamp fitting (2) attached to the suspension bolt (1) with the lip wall (13) facing downward,
Connection fitting (5) mounted at the intersection of the first frame material (3) and the second frame material (4) disposed on the upper surface of the same frame material (3) from the lower surface side of the first frame material (3) The ceiling base structure according to any one of claims 1 to 3, which is connected by The fastening body (32) is composed of a butterfly bolt (41) provided with an operation knob (43) and a disc-like pressing body (42) fixed to the screw shaft end of the butterfly bolt (41)
The diameter (D) of the pressing body (42) is set larger than the opening width (b1) of the opening (17) of the first frame member (3) and smaller than the lateral width (C) of the first frame member (3) The ceiling base structure according to claim 4.

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