JP7768199B2 - Ceiling support structure - Google Patents

Description

The present invention relates to a ceiling support structure that supports a ceiling.

An example of a ceiling support structure in which a ceiling is supported by structural materials is known from Patent Document 1. In the ceiling structure of Patent Document 1, the ends of the rafters are attached with the interior wall runners attached to the wall body, and the ceiling surface material is attached below the rafters.

Furthermore, in the first intermediate structural part of Patent Document 2, an intermediate ceiling suspension bracket equipped with an anti-vibration rubber member is fixed to the H-shaped steel, a siding support is fixed to the intermediate ceiling suspension bracket, a siding is fixed to the siding support, and a ceiling underlayment is fixed to the siding.

Utility Model Registration No. 3194065 Japanese Patent Application Laid-Open No. 2018-119326

In the ceiling structure described in Patent Document 1, the interior wall runners are attached directly to the walls, so vibrations from the floor above are transmitted along the walls and joists to the ceiling surface material on the floor below. This means that vibrations from the upper floor are easily transmitted to the floor below via the ceiling. On the other hand, in the first intermediate structural part of Patent Document 2, vibrations transmitted from the upper floors can be absorbed by vibration-damping rubber members, but the structure requires joist supports, which increases costs.

The present invention was made in consideration of the above-mentioned circumstances, and its purpose is to provide a ceiling support structure that can inexpensively suppress vibrations transmitted from structural materials to the ceiling.

(1) The ceiling support structure of claim 1 comprises a siding to which ceiling boards are attached, and a runner molded from a flat metal plate that can attach the siding to a structural material. The runner has a fixed portion that is fixed to the side of the structural material, a fitting portion into which the siding is fitted, and a connecting portion that connects the fixed portion and the fitting portion and is elastically deformable in the vertical direction.

Because the connecting part that connects the fixed part and the mating part is elastically deformable in the vertical direction, vertical vibrations generated in the structural material are dampened and transmitted to the mating part. As a result, vibrations transmitted from the second floor to the ceiling boards on the first floor are suppressed. Furthermore, since no sill support is required, vibration suppression can be achieved inexpensively.

(2) Claim 2 is a ceiling support structure according to claim 1, wherein the connecting portion has a first extension portion extending from the lower end of the fixing portion in a first direction intersecting the vertical direction, and a second extension portion extending downward from the first extension portion and connecting to the fitting portion.

(3) Claim 3 is a ceiling support structure according to claim 1, in which the connecting portion extends downward from the lower end of the fixing portion in a first direction intersecting the vertical direction, and the fitting portion has an upper plate extending from the extending end of the connecting portion in a direction opposite to the first direction, a back plate extending downward from the extending end of the upper plate, and a lower plate extending from the lower end of the back plate opposite the upper plate.

(4) Claim 4 relates to the ceiling support structure of claim 1, wherein the connecting portion has a third extending portion extending downward from the lower end of the fixing portion in a first direction intersecting the up-down direction, and a fourth extending portion extending from the extending end of the third extending portion in a direction opposite to the first direction; the fitting portion has a first plate extending in the first direction from the extending end of the fourth extending portion, a second plate extending downward from the tip of the first plate in the direction opposite to the first direction, and a third plate extending from the lower end of the second plate opposite to the first plate; and the fixing portion and the connecting portion are cut and raised from the second plate of the fitting portion.

High yield when manufacturing runners.

(5) The ceiling support structure of claim 5 comprises a joist to which ceiling boards are attached, and a runner molded from a flat metal plate that can attach the joist to a structural material. The runner has an upper plate extending in a transverse direction that intersects with the side of the structural material, a back plate extending downward from the end of the upper plate facing the structural material, and a lower plate extending from the lower end of the back plate opposite the upper plate. The back plate has an elastic portion that protrudes in a mountain shape along the transverse direction and is elastically deformable in the vertical direction.

The rafters are sandwiched between the upper board located at the top end of the fixed part and the lower board located below the connecting part, so the rafters are positioned close to the fixed part. This prevents the rafters from moving sideways, preventing lateral vibrations from being transmitted to the ceiling boards on the first floor.

The ceiling support structure of the present invention can inexpensively suppress vibrations transmitted from structural materials to the ceiling.

FIG. 1 is a diagram illustrating a ceiling support structure 12 of a building 10 . FIG. 2 is a view of the ceiling support structure 12 shown in FIG. 1 as seen from the left. FIG. 3 is a perspective view of the runner 22 according to the first embodiment. FIG. 4 is a rear view of the runner 22 shown in FIG. FIG. 5 is a diagram illustrating the procedure for attaching the ceiling board 25 using the runner 22. FIG. 6 is a diagram illustrating the procedure for attaching the ceiling board 25 using the runner 22. FIG. 7 is a diagram illustrating the procedure for attaching the ceiling board 25 using the runner 22. FIG. 8 is a perspective view showing a runner 22a according to a modified example of the first embodiment. FIG. 9 is a perspective view showing a runner 22b according to the second embodiment. FIG. 10 is a view of the runner 22b shown in FIG. 9 as seen from the right. FIG. 11 is a diagram showing a ceiling support structure 12 according to the third embodiment. FIG. 12 is a perspective view showing a runner 22c according to the third embodiment.

The following describes an embodiment of the present invention. Please note that the embodiment described below is merely one example of the present invention, and it goes without saying that the embodiment of the present invention can be modified as appropriate without departing from the spirit of the present invention.

In the following, the vertical direction 1 is defined based on the state in which the building 10 is constructed. The direction in which the rafters 20 extend, perpendicular to the vertical direction 1, is defined as the left-right direction 2. The direction in which the beams 11 extend, perpendicular to the vertical direction 1 and the left-right direction 2, is defined as the front-to-back direction 3.

[First embodiment]
The building 10 is a wooden frame house or the like, with multiple pillars erected on a base placed on a foundation (not shown). Some of the multiple pillars support beams (an example of a structural material) 11. A ceiling support structure 12 is disposed on the beams 11. FIGS. 1 and 2 show a case in which the ceiling support structure 12 of the first floor 15 is located below the floor 14 of the second floor 13. A plurality of beams 11 are disposed below the floor 14 of the second floor 13. As shown in FIGS. 1 and 2, the beams 11 extend along the front-to-rear direction 3 and have a first side surface (an example of a side surface) 16 facing left and a second side surface (an example of a side surface) 17 facing right.

The siding 20 extends in the left-right direction 2. The right end portion 27 of the siding 20 is fitted into a runner 22 attached to the first side surface 16 of the beam 11, and the other end of the siding 20 is fitted into a runner 22 fixed to another beam located to the left of the beam 11. The arrangement of the runner 22 and siding 20 is the same on the right side of the beam 11, with the left end portion 28 of the siding 20 fitted into a runner 22 attached to the second side surface 17 of the beam 11, and the other end fitted into a runner 22 fixed to another beam located to the right of the beam 11.

The ceiling support structure 12, located to the left of the beam 11, comprises a siding 20 and a runner 22. The siding 20 and runner 22 are each formed by rolling flat metal material of a specified thickness, such as steel or aluminum.

The siding 20 has a generally rectangular cross section when viewed from the left-right direction 2 and extends cylindrically along the left-right direction 2. Multiple sidings 20 are arranged in the front-to-back direction 3.

The runner 22 supports the siding 20. The runner 22 is fixed to the first side surface 16 at a position lower than the first side surface 16 with screws 39 and 55. The runner 22 fixed to the first side surface 16 supports the right end portions 27 of the multiple sidings 20. As shown in Figures 3 and 4, the runner 22 has a fixing portion 34, a connecting portion 35, and an engaging portion 36.

The fixing portions 34 are fixed to the first side surface 16 or the second side surface 17 of the beam 11. Three fixing portions 34 are positioned at equal intervals in the front-to-rear direction 3 along the first side surface 16 or the second side surface 17 of the beam 11. Each fixing portion 34 has a main surface 37 that abuts against the first side surface 16 or the second side surface 17, a through hole 38 that penetrates in the left-to-right direction 2, and an elongated hole 44 that penetrates in the left-to-right direction 2 and is long in the up-to-down direction 1. The dimension of each fixing portion 34 in the front-to-rear direction 3 need only be such that it can be fixed to the first side surface 16 or the second side surface 17 with a screw 39 or the like.

The connecting portion 35 connects the fitting portion 36 to each fixed portion 34. Each connecting portion 35 is located to the left and below each fixed portion 34 when it is fixed to the first side surface 16. More specifically, each connecting portion 35 has a first extension portion 50 and a second extension portion 51.

The first extension portion 50 extends leftward (an example of a first direction) from the lower end 29 of the fixing portion 34. The first extension portion 50 is aligned along the left-right direction 2 and the front-to-rear direction 3. The dimension of the first extension portion 50 in the front-to-rear direction 3 is the same as that of the fixing portion 34. The second extension portion 51 extends downward from the left end of the first extension portion 50 while curving and bulging leftward. The second extension portion 51 is connected to the fitting portion 36. The dimension of the second extension portion 51 in the front-to-rear direction 3 is the same as that of the first extension portion 50.

The fitting portion 36 is a long member that is long in the front-to-rear direction 3 when fixed to the beam 11. Multiple sills 20 are fitted into the fitting portion 36. The fitting portion 36 is located to the left of the fixing portion 34. The fitting portion 36 is located below each connecting portion 35. The fitting portion 36 has an upper plate 40, a back plate 41, and a lower plate 42.

The upper plate 40 extends to the right from the lower end 31 of the second extension portion 51. When viewed in the up-down direction 1, the upper plate 40 has a rectangular shape that is longer in the front-to-back direction 3 than in the left-to-right direction 2. The upper plate 40 is aligned in the left-to-right direction 2 and the front-to-back direction 3. The upper plate 40 faces three first extension portions 50. The dimension of the upper plate 40 in the front-to-back direction 3 is larger than that of the second extension portions 51. The dimension D1 of the upper plate 40 in the left-to-right direction 2 (see Figure 4) is smaller than the dimension D2 of the first extension portions 50 in the left-to-right direction 2.

The back panel 41 extends downward from the right end 32 of the upper panel 40. The back panel 41 is aligned in the up-down direction 1 and the front-to-back direction 3. The dimension of the back panel 41 in the front-to-back direction 3 is the same as the dimension of the upper panel 40 in the front-to-back direction 3. The right end of the joist 20 abuts against the left-facing surface of the back panel 41 (see Figure 1).

The lower plate 42 extends leftward from the lower end 33 of the back plate 41. The lower plate 42 is aligned in the left-right direction 2 and the front-to-back direction 3, with its upper surface facing the lower surface of the upper plate 40. The dimension of the lower plate 42 in the front-to-back direction 3 is the same as the dimension of the back plate 41 in the front-to-back direction 3. The dimension D3 of the lower plate 42 in the left-to-right direction 2 (see Figure 4) is greater than the dimension D1 of the upper plate 40 in the left-to-right direction 2.

As shown in Figure 1, a runner 22 is also attached to the right side of the beam 11, and is positioned so that the main surface 37 abuts the second side surface 17. Multiple ceiling boards 25 are fixed with screws 26 to the siding 20 supported by runners 22 fixed to the left and right sides of the beam 11.

[Procedure for installing the ceiling board 25 using the runner 22]
The procedure for attaching the ceiling board 25 to the beam 11 using the runners 22 will be described below with reference to FIGS. 5 , 6 , and 7 . When attaching the ceiling board 25 to the beam 11, the worker first attaches the runners 22 to the beam 11. Specifically, as shown in FIG. 5 , the worker positions each fixing portion 34 on the first side surface 16 of the beam 11 and temporarily fastens screws 39 into each elongated hole 44. At this time, the screws 39 are not completely fastened to the beam 11, and the runner 22 is able to slide in the vertical direction 1 relative to the beam 11. In this state, the worker aligns each through hole 38 with respect to the first side surface 16 in the vertical direction 1 and inserts screws 55 into each through hole 38 to secure the runner 22 to the first side surface 16. After fastening the screws 55, the worker also tightens the screws 39 to secure the runner 22 to the first side surface 16.

After the runner 22 is attached to the left side of the beam 11, the runner 22 is attached to the second side surface 17. Specifically, as shown in FIG. 6 , the worker positions the runner 22 on the second side surface 17 and then temporarily fastens screws 39 into each elongated hole 44. After temporarily fastening, the worker aligns the runner 22 to the same position in the vertical direction 1 as the runner 22 attached to the first side surface 16. With the runner 22 aligned, the worker inserts screws 55 into each through hole 38 to secure the runner 22 to the second side surface 17. After fastening the screws 55, the worker also tightens the screws 39 to secure the runner 22 to the second side surface 17. The runner 22 secured to the second side surface 17 is secured to the same position in the vertical direction 1 as the runner 22 secured to the first side surface 16.

Next, as shown in FIG. 7 , the worker attaches multiple sidings 20 to the fittings 36 of the runners 22 fixed to the first side surface 16. The left end portion of each siding 20 is supported by a runner (not shown) fixed to another beam located to the left of the beam 11, and the right end portion 27 is sandwiched between the upper plate 40 and lower plate 42 of the runner 22 fixed to the first side surface 16. At this time, the right end of the siding 20 abuts the back plate 41. Multiple sidings 20 are arranged side by side in the front-to-back direction 3, aligned along the left-to-right direction 2. The worker can adjust the spacing between each siding 20 by moving each siding 20 in the front-to-back direction 3 while it is sandwiched between the upper plate 40 and lower plate 42. The worker similarly sandwiches the left end portion 28 of the siding 20 located to the right of the beam 11 between the upper plate 40 and lower plate 42, adjusting the spacing between the sidings 20 in the front-to-back direction 3.

As shown in Figures 1 and 7, the worker fastens multiple ceiling boards 25 with screws 26 to the undersides 24 of the joists 20 arranged in the front-to-rear direction 3.

[Operation and effect of the first embodiment]
In this embodiment, the connecting portion 35 connecting the fixed portion 34 and the fitting portion 36 is elastically deformable in the vertical direction 1, so that vibrations generated in the beam 11 in the vertical direction 1 are absorbed by the connecting portion 35 and transmitted to the fitting portion 36. As a result, vibrations transmitted from the floor 14 of the second floor 13 to the ceiling board 25 of the first floor 15 are suppressed. Furthermore, since the ceiling support structure 12 can be composed of the joists 20 and the runners 22 and does not require joist supports, vibration suppression can be achieved inexpensively.

[Modification of the First Embodiment]
The runner 22 according to the above embodiment has been described with reference to an example in which the fitting portion 36 is larger in dimension than the fixed portion 34 and the connecting portion 35 in the front-rear direction 3, but is not limited to this configuration. Also, the first extension portion 50 extends leftward from the lower end of the fixed portion 34, and the second extension portion 51 extends downward from its left end while curving and bulging leftward, but is not limited to this configuration. The runner 22 a may have, for example, the configuration described below.

As shown in Figure 8, the runner 22a according to the modified example is formed by folding back a single rectangular flat plate. The fixed portion 34a has a through hole 38a and a long hole 44a. The through hole 38a penetrates the fixed portion 34a in the left-right direction 2. Three through holes 38a are positioned at equal intervals in the front-rear direction 3. The long holes 44a penetrate the fixed portion 34a in the left-right direction 2 and are elongated in the up-down direction 1. The long holes 44a are positioned below the three through holes 38a in the fixed portion 34a.

The connecting portion 35a extends leftward (an example of the first direction) and downward from the lower end 46 of the fixed portion 34a. The connecting portion 35a extends along the front-to-rear direction 3. The mating portion 36a has an upper plate 40a, a back plate 41a, and a lower plate 42a.

The upper plate 40a extends rightward (an example of the opposite direction to the first direction) from the left end 47 (an example of an extended end of a connecting portion) of the connecting portion 35a. The fitting portion 36a has the same dimensions in the front-to-rear direction 3 as the fixing portion 34a and the connecting portion 35a. The back plate 41a extends downward from the right end 48 (an example of an extended end of an upper plate) of the upper plate 40a. The lower plate 42a extends leftward from the lower end 49 of the back plate 41a. The lower plate 42a extends along the left-right direction 2 and the front-to-rear direction 3, with its upper surface facing the lower surface of the upper plate 40.

[Other Modifications]
In the first embodiment described above, an example has been described in which three fixing portions 34 are positioned at equal intervals in the front-rear direction 3, but this configuration is not limiting. There may be two or less fixing portions 34, or four or more fixing portions 34, for one fitting portion 36 extending along the front-rear direction 3.

In the first embodiment described above, an example was given in which the dimension D3 of the lower plate 42 in the left-right direction 2 is larger than the dimension D1 of the upper plate 40 in the left-right direction 2, but this configuration is not limited to this. The dimension D3 of the lower plate 42 in the left-right direction 2 may be smaller than or the same as the dimension D1 of the upper plate 40 in the left-right direction 2.

In the first embodiment described above, an example was given in which the screw 55 is fully tightened into the first side surface 16 or the second side surface 17, and then the temporarily fastened screw 39 is also tightened to secure the runner 22 to the first side surface 16 or the second side surface 17. However, this configuration is not limited to this. The temporarily fastened screw 39 may be removed from the first side surface 16 or the second side surface 17 after the runner 22 is secured by the screw 55. In other words, the runner 22 may be secured only by the screw 55.

In addition, in the first embodiment described above, the fixing portion 34 has a through hole 38 for fixing the runner 22 to the beam 11 and an elongated hole 44 for positioning the runner 22 relative to the beam 11, but this configuration is not limited to this. The fixing portion 34 may also have only a through hole 38.

Second Embodiment
In the first embodiment described above, the case where the connecting portion 35 of the runner 22 is connected to the left end of the upper plate 40 has been described as an example, but this configuration is not limited thereto. For example, as shown in Fig. 9, the connecting portion 35b may be connected to the upper end of the second plate 61 of the fitting portion 36b. Furthermore, the runner 22b in this embodiment may be formed by cutting and raising the fixing portion 34b and the connecting portion 35b from the second plate 61.

The runner 22b has a fixing portion 34b, a connecting portion 35b, and a fitting portion 36b. Three fixing portions 34b are positioned at equal intervals in the front-to-rear direction 3 along the first side surface 16 or the second side surface 17 of the beam 11. Each fixing portion 34b has a main surface 37b (see Figure 10) that abuts against the first side surface 16 or the second side surface 17, a through hole 38b that penetrates in the left-to-right direction 2, and an elongated hole 44b that penetrates in the left-to-right direction 2 and is long in the up-to-down direction 1. The dimension of each fixing portion 34b in the front-to-rear direction 3 need only be large enough to allow it to be fixed to the first side surface 16 or the second side surface 17 with a screw or the like.

The connecting portion 35b connects the fitting portion 36b and each fixing portion 34b. Each connecting portion 35b is bent into a V-shape that opens to the right. More specifically, each connecting portion 35b has a third extension portion 58 and a fourth extension portion 59.

The third extension portion 58 extends leftward (an example of the first direction) from the lower end 65 of the fixed portion 34b. The dimension of the third extension portion 58 in the front-to-rear direction 3 is the same as that of the fixed portion 34b. The fourth extension portion 59 extends rightward (an example of the direction opposite to the first direction) from the left end 66 (an example of the extending end of the third extension portion) of the third extension portion 58. The dimension of the fourth extension portion 59 in the front-to-rear direction 3 is the same as that of the third extension portion 58.

The fitting portion 36b has a first plate 60, a second plate 61, and a third plate 62. The first plate 60 extends leftward from the lower end 67 of the fourth extension portion 59 (an example of the extending end of the fourth extension portion). The first plate 60 is aligned in the left-right direction 2 and the front-rear direction 3. The first plate 60 is longer in the front-rear direction 3 than each of the fourth extension portions 59.

The second plate 61 extends downward from the right end 68 of the first plate 60 (an example of the tip in the direction opposite to the first direction). The second plate 61 is aligned along the up-down direction 1 and the front-to-back direction 3. The second plate 61 has the same dimensions as the first plate 60 in the front-to-back direction 3. Three cutout holes 45 are formed in the second plate 61. The cutout holes 45 are rectangular openings that are longer in the up-down direction 1 than in the front-to-back direction 3.

The cut-and-raised portion of the second plate 61 is folded back to form the fixed portion 34b, the third extension portion 58, and the fourth extension portion 59. The cut-and-raised portion is folded at two creases along the front-to-rear direction 3 to form the fixed portion 34b at the tip, the third extension portion 58 at the center, and the fourth extension portion 59 at the base.

The third plate 62 extends leftward from the lower end 69 of the second plate 61. The upper surface of the third plate 62 faces the lower surface of the second plate 61. The dimension of the third plate 62 in the front-to-rear direction 3 is the same as the dimension of the first plate 60 in the front-to-rear direction 3.

The fixed portion 34b and connecting portion 35b can be formed from the cut-out portion of the second plate 61, reducing the amount of material used. This allows for a high yield of runners 22b.

In the first and second embodiments described above, the connecting portions 35, 35a, 35b of the runners 22, 22a, 22b fixed to the first side surface 16 are positioned to the left of the fixed portions 34, 34a, 34b, but this configuration is not limited to this. For example, the connecting portions 35, 35a, 35b may be positioned to the left of the first side surface 16. Note that when the runners 22, 22a, 22b are attached to the second side surface 17, they may be positioned to the right of the second side surface 17. In other words, the connecting portions 35, 35a, 35b may extend in a direction that does not interfere with the first side surface 16 or the second side surface 17 of the beam 11.

In the first and second embodiments described above, the mating portions 36, 36a, 36b are described as elongated members that are long in the front-to-rear direction 3, but the mating portions 36, 36a, 36b may be shorter than the beam 11. In other words, the mating portions 36, 36a, 36b may be long in the front-to-rear direction 3 so that one runner 22, 22a, 22b can be arranged along the beam 11, or multiple mating portions may be arranged along the beam 11.

[Third embodiment]
In the first embodiment described above, the fitting portion 36 of the runner 22 is located below the connecting portion 35, and the joist 20 is supported below the connecting portion 35. However, this configuration is not limited to this. For example, as shown in Figures 11 and 12, the runner 22c may sandwich the joist 20 between an upper plate 80 located above the through hole 38c and a lower plate 82 located below the through hole 38c.

As shown in Figure 11, the ceiling support structure 12 located to the left of the beam 11 includes a siding 20 and a runner 22c. The runner 22c is a long member that is long in the front-to-rear direction 3 when fixed to the beam 11. The runner 22c is fixed with screws 39 at a position lower on the beam 11, with the back panel 81 abutting against the first side surface 16. The runner 22c fixed to the first side surface 16 supports the right end portions 27c of the multiple sidings 20.

As shown in Figure 12, the runner 22c has an upper plate 80, a back plate 81, and a lower plate 82. The upper plate 80 extends along the left-right direction 2 and the front-rear direction 3 (an example of a cross direction), and is long in the front-rear direction 3.

The back plate 81 extends downward from the right end 83 (an example of the end facing the structural material) of the top plate 80. The back plate 81 has the same dimension in the front-to-rear direction 3 as the top plate 80. The back plate 81 has a fixed portion 90, a through hole 38a, an elastic portion 91, and an extension portion 92.

The fixing portion 90 is aligned in the up-down direction 1 and the front-to-back direction 3. The fixing portion 90 is located toward the upper part of the back panel 81. Through-holes 38c penetrate the fixing portion 90 in the left-to-right direction 2. Three through-holes 38c are positioned at equal intervals in the front-to-back direction 3.

The elastic portion 91 is located below the fixed portion 90. The elastic portion 91 protrudes to the left in a mountain shape. More specifically, the elastic portion 91 has a first portion 93 and a second portion 94.

The first portion 93 extends leftward and downward from the lower end 84 of the fixing portion 90. The first portion 93 is aligned along the front-to-rear direction 3. The dimension of the first portion 93 in the front-to-rear direction 3 is the same as that of the fixing portion 90. The dimension of the first portion 93 in the left-to-right direction 2 is smaller than that of the upper plate 80.

The second portion 94 extends rightward and downward from the left end 85 of the first portion 93. The second portion 94 has the same dimension in the front-to-rear direction 3 as the first portion 93. The dimension of the second portion 94 in the left-to-right direction 2 is smaller than the dimension of the first portion 93 in the left-to-right direction 2.

The extension portion 92 extends downward from the lower end 86 of the second portion 94. The extension portion 92 is aligned along the up-down direction 1 and the front-to-back direction 3. The extension portion 92 is located toward the bottom of the back panel 81. The extension portion 92 is parallel to the fixed portion 90 and is located to the left of the fixed portion 90. The dimension of the extension portion 92 along the front-to-back direction 3 is the same as that of the second portion 94.

The lower plate 82 extends leftward from the lower end 87 of the extension portion 92 (an example of the lower end of the back plate). The upper surface of the lower plate 82 faces the lower surface of the upper plate 80. The dimension of the lower plate 82 in the front-to-rear direction 3 is the same as that of the second portion 94. The dimension of the lower plate 82 in the left-to-right direction 2 is larger than that of the upper plate 80.

When installing the ceiling board 25 on the beams 11, the worker positions the runner 22c on the first side surface 16 and then fastens the screws 39 into each through-hole 38c. This secures the runner 22c to the first side surface 16.

After the runner 22c is attached to the left side of the beam 11, a runner 22c is attached to the second side surface 17 at the same position in the vertical direction 1 as the runner 22c fixed to the first side surface 16.

The worker clamps the right end portion 27c of the siding 20 between the upper plate 80 and lower plate 82 of the runner 22c fixed to the first side surface 16, and similarly clamps the left end portion to a runner 22c fixed to another beam located to the left of the beam 11. At this time, the right end of the siding 20 abuts the left end 85 of the first portion 93 (see Figure 11). The worker can adjust the spacing between multiple sidings 20 arranged in the front-to-rear direction 3 by moving them in the front-to-rear direction 3 while they are sandwiched between the upper plate 80 and lower plate 82. The worker similarly attaches multiple sidings 20 between the upper plate 80 and lower plate 82 of the runner 22c fixed to the second side surface 17. As shown in Figure 11, a ceiling board 25 is fixed to the underside 24 of the siding 20 with screws 26.

[Other Modifications]
In the third embodiment described above, an example has been given in which the runner 22c is an elongated member that is long in the front-rear direction 3, but the runner 22c may be any member that is shorter than the beam 11. In other words, the runner 22c may be long in the front-rear direction 3 so that one runner 22c can be arranged along the beam 11, or multiple runners 22c can be arranged along the beam 11.

In the above-described embodiments, the runners 22, 22a, 22b, and 22c are attached to the beams 11, but this configuration is not limiting. The runners 22, 22a, 22b, and 22c may also be attached to the interior walls of a building.

In the above-described embodiments, the runners 22, 22a, 22b, and 22c are fixed to the beam 11 by inserting screws 55 into the through holes 38, 38a, 38b, and 38c, but this configuration is not limited to this. The runners 22, 22a, 22b, and 22c do not have to have through holes 38, 38a, 38b, and 38c. In this case, the runners 22, 22a, 22b, and 22c are fixed to the beam 11 by directly driving screws 55 into them.

In the above-described embodiments, the sill 20 extends in the left-right direction 2, and the right end portion 27 and left end portion 28 are sandwiched between the runners 22, 22a, 22b, and 22c. However, this configuration is not limited to this. The sill 20 may be arranged on the runners 22, 22a, 22b, and 22c in a position extending in the front-to-rear direction 3, for example, via other members. In this case, the sill 20 may be inserted parallel to the runners 22, 22a, 22b, and 22c.

[Appendix 1]
A ceiling support structure comprising a joist to which a ceiling board is attached and a runner formed from a metal flat plate, which can attach the joist to a structural material,
The above runners are
a fixing portion fixed to a side surface of the structural material;
a fitting portion into which the rafter is fitted;
A ceiling support structure having a connecting portion that connects the fixed portion and the fitting portion and is elastically deformable in the vertical direction.

[Appendix 2]
The connecting portion is
a first extension portion extending from a lower end of the fixed portion in a first direction intersecting the up-down direction;
A ceiling support structure as described in Appendix 1, having a second extension portion that curves downward from the first extension portion and connects to the fitting portion.

[Appendix 3]
the connecting portion extends downward from a lower end of the fixed portion in a first direction intersecting with the up-down direction,
The fitting portion is
an upper plate extending from an extending end of the connecting portion along a direction opposite to the first direction;
a back plate extending downward from the extending end of the upper plate;
A ceiling support structure as described in Appendix 1, having a lower plate extending from the lower end of the back plate opposite the upper plate.

[Appendix 4]
The connecting portion is
a third extension portion extending downward from a lower end of the fixed portion in a first direction intersecting the up-down direction;
a fourth extension portion extending from an extension end of the third extension portion along a direction opposite to the first direction,
The fitting portion is
a first plate extending in the first direction from an extension end of the fourth extension portion;
a second plate extending downward from a tip of the first plate in a direction opposite to the first direction;
a third plate extending from a lower end of the second plate opposite to the first plate,
A ceiling support structure as described in Appendix 1, wherein the fixing portion and the connecting portion are cut and raised from the second plate of the fitting portion.

[Appendix 5]
A ceiling support structure comprising a joist to which a ceiling board is attached and a runner formed from a metal flat plate, which can attach the joist to a structural material,
The above runners are
an upper plate extending along a direction intersecting the side surface of the structural member;
a back plate extending downward from an end of the upper plate facing the structural member;
a lower plate extending from a lower end of the back plate opposite to the upper plate,
The back panel above is
A ceiling support structure having an elastic portion that protrudes in a mountain shape along the intersecting direction and is elastically deformable in the vertical direction.

11... Beam (structural material)
12... Ceiling support structure 16... First side (side)
17...Second side (side)
20... Rough joist 22, 22a, 22b, 22c... Runner 25... Ceiling board 29... Lower end of fixed portion 34 34, 34a, 34b, 90... Fixed portion 35, 35a, 35b... Connecting portion 36, 36a, 36b... Fitting portion 40, 40a, 80... Upper plate 41, 41a, 81... Back plate 42, 42a, 82... Lower plate 46... Lower end of fixed portion 34a 47... Left end of connecting portion 35a (extending end of connecting portion)
48: Right end of upper plate 40a (extending end of upper plate)
49: Lower end of back plate 41a 50: First extension portion 51: Second extension portion 58: Third extension portion 59: Fourth extension portion 60: First plate 61: Second plate 62: Third plate 65: Lower end of fixing portion 34b 66: Left end of third extension portion 58 (extending end of the third extension portion)
67: Lower end of the fourth extension portion 59 (extension end of the fourth extension portion)
68: Right end of the first plate 60 (the tip in the direction opposite to the first direction)
69: Lower end of the second plate 61 (lower end of the second plate)
83: Right end of the upper plate 80 (end facing the structural material)
87: Lower end of extension 92 (lower end of back plate)
91... Elastic part

Claims (3)

A ceiling support structure comprising a plurality of joists to which ceiling boards are attached, and a runner molded from a metal flat plate, which can attach the plurality of joists to a structural material,
The above runners are
a fixing portion fixed to a side surface of the structural material;
a fitting portion into which the plurality of sidings are fitted;
a connecting portion that connects the fixing portion and the fitting portion and is elastically deformable in the vertical direction ,
The connecting portion is
a first extension portion extending from a lower end of the fixed portion in a first direction intersecting the up-down direction;
a second extension portion that curves downward from the first extension portion and connects to the fitting portion,
the connecting portion extends downward in the first direction from a lower end of the fixing portion,
The fitting portion is
an upper plate extending from an extending end of the connecting portion along a direction opposite to the first direction;
a back plate extending downward from the extending end of the upper plate;
a lower plate extending from a lower end of the back plate to face the upper plate,
The upper board and the lower board sandwich each end of the plurality of rough joists in the vertical direction,
A ceiling support structure in which the dimensions of the upper plate are smaller than the dimensions of the first extension portion in the first direction . A ceiling support structure comprising a joist to which a ceiling board is attached and a runner formed from a metal flat plate, which can attach the joist to a structural material,
The above runners are
a fixing portion fixed to a side surface of the structural material;
a fitting portion into which the rafter is fitted;
a connecting portion that connects the fixing portion and the fitting portion and is elastically deformable in the vertical direction,
The connecting portion is
a third extension portion extending downward from a lower end of the fixed portion in a first direction intersecting the up-down direction;
a fourth extension portion extending from an extension end of the third extension portion along a direction opposite to the first direction,
The fitting portion is
a first plate extending in the first direction from an extension end of the fourth extension portion;
a second plate extending downward from a tip of the first plate in a direction opposite to the first direction;
a third plate extending from a lower end of the second plate opposite to the first plate,
A ceiling support structure in which the fixing portion and the connecting portion are cut and raised from the second plate of the fitting portion. A ceiling support structure comprising a plurality of joists to which ceiling boards are attached, and a runner molded from a metal flat plate, which can attach the plurality of joists to a structural material,
The above runners are
an upper plate extending along a first direction intersecting a side surface of the structural material;
a back plate extending downward from an end of the upper plate facing the structural member;
a lower plate extending from a lower end of the back plate opposite to the upper plate,
The upper board and the lower board sandwich each end of the plurality of rough joists in the vertical direction,
The back panel above is
a fixing portion extending downward from an end of the upper plate facing the structural member and fixed to a side surface of the structural member;
an extension portion extending upward from an end of the lower plate facing the structural member;
a connecting portion that connects the fixed portion and the extension portion and is elastically deformable in the vertical direction,
The connecting portion is
a first portion extending downward in the first direction from a lower end of the fixed portion;
a second portion extending downward in a direction opposite to the first direction from a tip of the first portion in the first direction and connected to the extension portion,
A ceiling support structure in which the second portion has a smaller dimension in the first direction than the first portion .