Attachment metal fitting and ceiling base using attachment metal fitting

Abstract

To provide means capable of inexpensively suppressing vibrations from being transmitted from a structural material to the downstairs ceiling.SOLUTION: An attachment metal fitting 22 is formed by a metal flat plate and a runner 21 is attached to a beam 11. The attachment metal fitting 22 includes: a fixation unit 34 fixed to a first side surface 16 or a second side surface 17 of a beam 11; a fitting unit 36 to which the runner 21 is to be fitted; and a connection unit 35 connecting the fixation unit 34 and the fitting unit 36 and being elastically deformable in a vertical direction 1.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a mounting bracket for attaching a runner to a structural material and a ceiling underlayment using said mounting bracket. [Background technology]

[0002] 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 end of the rafter is attached with the inner wall runner attached to the wall body, and the ceiling surface material is attached below the rafter.

[0003] In addition, in the first intermediate structural part of Patent Document 2, an intermediate ceiling hanging bracket equipped with an anti-vibration rubber member is fixed to an H-shaped steel, a soffit support is fixed to the intermediate ceiling hanging bracket, a soffit is fixed to the soffit support, and a ceiling base material is fixed to the soffit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3194065 [Patent Document 2] JP 2018-119326 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the ceiling structure described in Patent Document 1, the inner wall runner is attached directly to the wall, so the vibrations of the floor above are transmitted to the ceiling surface material of the floor below via the wall and the joist. Therefore, the vibrations of the upper floor are easily transmitted to the floor below via the ceiling. On the other hand, in the first intermediate structure part of Patent Document 2, the vibrations transmitted from the upper floor can be absorbed by the vibration-proof rubber member, but the structure requires the joist support, which increases the cost.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a means for inexpensively suppressing the transmission of vibrations from a structural material to a ceiling. [Means for solving the problem]

[0007] (1) The mounting bracket according to claim 1 is molded from a metal plate and attaches a runner to a structural member. The mounting bracket includes a fixing part that is fixed to the side of the structural member, a fitting part into which the runner is fitted, and a connecting part that connects the fixing part and the fitting part and is elastically deformable in the vertical direction.

[0008] Since the connecting part that connects the fixed part and the fitting part can be elastically deformed in the vertical direction, the vertical vibration generated in the structural material is mitigated and transmitted to the fitting part. As a result, the vibration transmitted from the structural material to the ceiling on the floor below is suppressed. In addition, since no joist support is required, vibration suppression can be achieved at low cost.

[0009] (2) Claim 2 is a mounting bracket as described in claim 1, wherein the runner has an upper plate, a back plate, and a lower plate and opens in one direction, the fixing portion has a through hole that penetrates along the first direction, the connecting portion has a first extension portion extending in one direction from the fixing portion, a second extension portion extending and curving downward from the first extension portion, and a third extension portion extending in a direction opposite to the one direction from the second extension portion, and the fitting portion has a clamping piece that vertically clamps the upper plate of the runner and an abutting piece that abuts the back plate of the runner.

[0010] The clamping pieces clamp the top plate of the runner, and the abutting pieces abut against the back plate of the runner, so that the runner fits into the fitting section. Because a part of the clamping pieces is located below the top plate of the runner, when the runner and the mounting bracket are fitted together, the siding can move laterally along the opening of the runner.

[0011] (3) Claim 3 is a ceiling support structure comprising a structural material, a plurality of mounting brackets fixed to the structural material, and a runner supported by the plurality of mounting brackets. The mounting brackets have a fixing portion fixed to the structural material, a fitting portion fitted to the runner, and a connecting portion connecting the fixing portion and the fitting portion and elastically deformable in the vertical direction.

[0012] (4) Claim 4 is a ceiling support structure as described in claim 3, wherein the runner has an upper plate, a back plate, and a lower plate and opens in one direction, the fixing portion has a through hole that penetrates along the first direction, the connecting portion has a first extension portion extending in one direction from the fixing portion, a second extension portion extending and curving downward from the first extension portion, and a third extension portion extending from the second extension portion in a direction opposite to the one direction, and the fitting portion has a clamping piece that clamps the upper plate of the runner in the vertical direction and an abutting piece that abuts against the back plate of the runner. Effect of the Invention

[0013] The mounting bracket according to the present invention can inexpensively suppress the transmission of vibrations from a structural member to the ceiling of the floor below. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram showing a ceiling support structure 12 of a building 10. [Diagram 2] FIG. 2 is a view of the ceiling support structure 12 shown in FIG. 1 as seen from the left. [Diagram 3] FIG. 3 is a perspective view of the mounting bracket 22 according to the first embodiment. [Figure 4] FIG. 4 is a rear view of the mounting bracket 22 shown in FIG. [Diagram 5] FIG. 5 is a view of the mounting bracket 22 shown in FIG. 3 as viewed from above. [Figure 6] FIG. 6 is a diagram illustrating a procedure for attaching the ceiling board 25 using the mounting bracket 22. As shown in FIG. [Figure 7]FIG. 7 is a diagram illustrating a procedure for attaching the ceiling board 25 using the mounting bracket 22. As shown in FIG. [Figure 8] FIG. 8 is a diagram illustrating a procedure for attaching the ceiling board 25 using the mounting bracket 22. As shown in FIG. [Figure 9] FIG. 9 is a diagram illustrating a procedure for attaching the ceiling board 25 using the mounting bracket 22. As shown in FIG. [Figure 10] FIG. 10 is a diagram illustrating a procedure for attaching the ceiling board 25 using the mounting bracket 22. As shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described. Note that the embodiment described below is merely an example of the present invention, and it goes without saying that the embodiment of the present invention can be appropriately modified without departing from the gist of the present invention.

[0016] In the following, the up-down direction 1 is defined based on the state in which the building 10 is constructed. The direction in which the joists 20 extend perpendicular to the up-down direction 1 is defined as the left-right direction 2. The direction in which the beams 11 extend perpendicular to the up-down direction 1 and the left-right direction 2 is defined as the front-rear direction 3.

[0017] The building 10 is a house or the like with a wooden frame structure, 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 arranged 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 arranged 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 leftward and a second side surface (an example of a side surface) 17 facing rightward.

[0018] The right end portion 27 of the joist 20 is fitted into the runner 21 attached to the first side surface 16 of the beam 11, and the other end of the joist 20 is fitted into the runner 21 fixed to another beam located to the left of the beam 11. The arrangement of the runner 21 and the joist 20 is the same on the right side of the beam 11, and the left end portion 28 of the joist 20 is fitted into the runner 21 attached to the second side surface 17 of the beam 11, and the other end is fitted into the runner 21 fixed to another beam located to the right of the beam 11.

[0019] The ceiling support structure 12, located to the left of the beam 11, includes a joist 20, a runner 21, and a mounting bracket 22. The joist 20, the runner 21, and the mounting bracket 22 are each formed by rolling a flat metal material having a predetermined thickness, such as steel or aluminum.

[0020] The joists 20 have a generally rectangular cross section when viewed from the left-right direction 2, and extend in a cylindrical shape along the left-right direction 2. A plurality of the joists 20 are arranged in the front-rear direction 3.

[0021] The runner 21 supports the joist 20. The runner 21 has a U-shaped cross section that opens to the left (an example of one direction) and extends along the front-rear direction 3. The runner 21 has a back plate 30, an upper plate 31, and a lower plate 32.

[0022] The back panel 30 extends in the up-down direction 1 and the front-rear direction 3. The back panel 30 is located to the left of the first side surface 16 of the beam 11. The back panel 30 is spaced to the left from the first side surface 16 and faces the first side surface 16. The back panel 30 overlaps with the lower surface 18 of the beam 11 in the up-down direction 1. The upper panel 31 extends in the left-right direction 2 and the front-rear direction 3. The upper panel 31 extends to the left from the upper end of the back panel 30. The upper panel 31 is located above the lower surface 18. The lower panel 32 extends to the left from the lower end of the back panel 30. The lower panel 32 extends in the left-right direction 2 and the front-rear direction 3. The lower panel 32 is located below the upper panel 31 and faces the upper panel 31. The lower panel 32 is located below the lower surface 18.

[0023] The mounting bracket 22 is a bracket that attaches the runner 21 to the beam 11. The mounting bracket 22 is fixed by screws 39, 55 at a position near the bottom of the first side surface 16 or the second side surface 17. As shown in Fig. 3, the mounting bracket 22 includes a fixing portion 34, a connecting portion 35, and a fitting portion 36. The mounting bracket 22 is elastically deformable in the vertical direction 1, and bends when subjected to a load or stress.

[0024] The fixing portion 34 is a portion that is fixed to the beam 11 of the mounting bracket 22. As shown in Figures 3 and 4, the 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-right direction 2, and a long hole 40 that penetrates in the left-right direction 2 and is long in the up-down direction 1. The dimension of the fixing portion 34 in the front-rear direction 3 may be such that it can be fixed to the first side surface 16 or the second side surface 17 with screws 39, 55.

[0025] The connecting portion 35 connects the fixing portion 34 to a fitting portion 36 that fits into the runner 21. The connecting portion 35 is located to the left and below the fixing portion 34. The connecting portion 35 is bent into a U-shape that opens to the right.

[0026] More specifically, as shown in Figs. 3, 4, and 5, the connecting portion 35 has a first extension portion 50, a second extension portion 51, a third extension portion 52, and a fourth extension portion 53. The first extension portion 50 extends leftward from the lower end of the fixing portion 34. The first extension portion 50 is aligned along the left-right direction 2 and the front-rear direction 3. The first extension portion 50 has the same dimension in the front-rear direction 3 as the fixing portion 34. The second extension portion 51 extends downward from the left end of the first extension portion 50 while curving to bulge leftward. The dimension in the front-rear direction 3 of the second extension portion 51 is the same as that of the first extension portion 50.

[0027] The third extension portion 52 extends rightward from the lower end of the second extension portion 51. The third extension portion 52 is aligned along the left-right direction 2 and the front-rear direction 3. The third extension portion 52 is located below the first extension portion 50 and faces the first extension portion 50. The third extension portion 52 has the same dimension in the front-rear direction 3 as the second extension portion 51. As shown in Figures 3 and 5, the fourth extension portion 53 extends rearward from the rear end of the third extension portion 52. The dimension D1 in the left-right direction 2 of the fourth extension portion 53 (see Figure 5) is smaller than the dimension in the left-right direction 2 of the third extension portion 52.

[0028] The fitting portion 36 is a portion that is fitted into the runner 21. As shown in Fig. 3, the fitting portion 36 is located to the left and rear of the fixed portion 34. The fitting portion 36 is located rear of the connecting portion 35. The fitting portion 36 has a clamping piece 56 and a contact piece 57.

[0029] The clamping piece 56 clamps the upper plate 31 of the runner 21 in the up-down direction 1 (see Figs. 1 and 2). As shown in Figs. 4 and 5, the clamping piece 56 has a fifth extension 60, a sixth extension 61, and a seventh extension 62. The fifth extension 60 extends rearward from the rear end of the fourth extension 53 of the connecting portion 35. The fifth extension 60 has a dimension D2 in the left-right direction 2 that is the same as the dimension of the third extension 52 in the left-right direction 2 (see Figs. 3 and 4), and is smaller than the dimension D3 in the left-right direction 2 of the upper plate 31 (see Fig. 1). In addition, the dimension D2 of the fifth extension 60 in the left-right direction 2 is smaller than the dimension D4 in the left-right direction of the first extension 50 (see Fig. 4).

[0030] The sixth extension 61 extends upward from the left end of the fifth extension 60 while curving to bulge leftward. The sixth extension 61 has the same dimension in the front-to-rear direction 3 as the fifth extension 60. The seventh extension 62 extends rightward from the upper end of the sixth extension 61. The seventh extension 62 has the same dimension in the front-to-rear direction 3 as the sixth extension 61. The seventh extension 62 is bent in a mountain shape toward the upper surface of the opposing fifth extension 60, and is in contact with the fifth extension 60 at a position toward the right. The seventh extension 62 is deflected in a direction away from the fifth extension 60 by receiving a load from below.

[0031] The abutment piece 57 prevents the runner 21 from coming off the mounting bracket 22. As shown in Figs. 3 and 4, the abutment piece 57 has an eighth extension 63 and a ninth extension 64. The eighth extension 63 extends rightward from the right end of the seventh extension 62 at a position closer to the front. The dimension of the eighth extension 63 in the front-rear direction 3 is smaller than the dimension of the seventh extension 62 in the front-rear direction 3. The ninth extension 64 extends downward from the right end of the eighth extension 63. The tip of the ninth extension 64 is located lower than the fifth extension 60. A dimension D5 (see Fig. 4) in the left-right direction 2 from the left end of the seventh extension 62 to the upper end of the ninth extension 64 is larger than a dimension D3 (see Fig. 1) in the left-right direction 2 of the upper plate 31. The ninth extension portion 64 is located to the right of the upper plate 31 that is sandwiched between the fifth extension portion 60 and the seventh extension portion 62 (see FIG. 1). In other words, when the runner 21 shifts to the right relative to the mounting bracket 22, the surface of the ninth extension portion 64 facing left comes into contact with the back plate 30.

[0032] [Procedure for mounting the ceiling board 25 using the mounting bracket 22] The procedure for attaching the ceiling board 25 to the beam 11 using the mounting brackets 22 will be described below with reference to FIGS.

[0033] When attaching the ceiling board 25 to the beam 11, a worker first attaches the mounting bracket 22 to the runner 21. As shown in Fig. 6, the upper plate 31 of the runner 21 is sandwiched between the fifth extension portion 60 and the seventh extension portion 62. At this time, the back plate 30 is located between the ninth extension portion 64 and the end of the fifth extension portion 60. In addition, the worker can easily move the position of the mounting bracket 22 relative to the runner 21 in the front-rear direction 3.

[0034] Next, the worker attaches the mounting bracket 22 to the beam 11. Specifically, as shown in FIG. 7, the worker temporarily fastens the screw 39 in the long hole 40 with the fixing portion 34 positioned on the first side surface 16 of the beam 11. At this time, the screw 39 is not completely fastened to the beam 11, and the mounting bracket 22 is able to slide in the vertical direction 1 relative to the beam 11. In this state, the worker aligns the runner 21 in the vertical direction 1, and as shown in FIG. 8, fixes it to the first side surface 16 while inserting the screw 55 into the through hole 38. After fixing the screw 55, the worker also tightens the screw 39 to fix it to the first side surface 16.

[0035] Similarly, on the right side of the beam 11, the worker temporarily fastens the screw 39 in the long hole 40 with the mounting bracket 22 fitted into the runner 21 positioned on the second side surface 17. After the temporary fastening, the worker aligns the runner 21 to the same position in the vertical direction 1 as the runner 21 attached to the first side surface 16. With the position aligned, the worker inserts the screw 55 into the through hole 38 to fix the mounting bracket 22 to the second side surface 17. As shown in FIG. 10, after fixing the screw 55, the worker also tightens the screw 39 to fix the mounting bracket 22 to the second side surface 17. The runner 21 attached to the second side surface 17 by the mounting bracket 22 is in the same position in the vertical direction 1 as the runner 21 located on the left side of the beam 11.

[0036] The worker attaches the siding 20 to the runner 21. As shown in FIG. 10, the worker clamps the right end portion 27 of the siding 20 located to the left of the beam 11 between the upper plate 31 and the lower plate 32 of the runner 21. At this time, the right end of the siding 20 abuts the back plate 30. The other end of the siding 20 is fitted into the runner 21 fixed to another beam located to the left of the beam 11. The sidings 20 are arranged side by side in the front-to-rear direction 3. Since each of the upper plate 31 and the lower plate 32 of the runner 21 can be elastically deformed in the up-down direction 1, the worker can move each of the sidings 20 arranged in the front-to-rear direction 3 of the runner 21 while being clamped between the upper plate 31 and the lower plate 32, thereby adjusting the spacing between the sidings 20 in the front-to-rear direction 3. The worker similarly clamps the left end portion 28 of the siding 20 located to the right of the beam 11 between the upper plate 31 and the lower plate 32 of the runner 21 to adjust the spacing between the sidings 20 in the front-to-rear direction 3.

[0037] A worker fastens a plurality of ceiling boards 25 with screws 26 to the undersides 24 of the joists 20 arranged on the left and right sides of the beams 11 (see FIG. 1).

[0038] [Effects of the embodiment] Since the connecting portion 35 connecting the fixed portion 34 and the fitting portion 36 is elastically deformable in the vertical direction 1, vibrations in the vertical direction 1 transmitted from the floor of the second floor 13 to the beams 11 are mitigated in the connecting portion 35 and transmitted to the fitting portion 36. As a result, vibrations transmitted from the beams 11 to the ceiling board 25 of the first floor 15 are suppressed. Also, since no joist support is required, vibration suppression can be achieved at low cost. In other words, a ceiling support structure that can suppress vibrations transmitted from the upper floors to the lower floors can be achieved at low cost.

[0039] When the runner 21 and the mounting bracket 22 are engaged, the clamping piece 56 clamps the upper plate 31 of the runner 21. The abutment piece 57 abuts against the back plate 30 when the runner 21 shifts relative to the mounting bracket 22. When the mounting bracket 22 is engaged with the runner 21, the fifth extension portion 60 is located below the upper plate 31 of the runner 21. Therefore, the siding 20 can move in the front-rear direction 3 along the opening of the runner 21.

[0040] [Variations] In the above embodiment, the connecting portion 35 of the mounting bracket 22 is located to the left of the fixing portion 34, but the present invention is not limited to this configuration. The connecting portion 35 of the mounting bracket 22 may be located to the left of the first side surface 16 of the beam 11, and the mounting bracket 22 may be located to the right of the second side surface 17 of the beam 11. In other words, the connecting portion 35 may extend in a direction that does not interfere with the first side surface 16 and the second side surface 17 of the beam 11.

[0041] In the above embodiment, the connecting portion 35 of the mounting bracket 22 is formed by bending a flat plate into a U-shape, but the present invention is not limited to this configuration. The cross-sectional shape of the connecting portion 35 may be, for example, V-shaped, W-shaped, or wavy.

[0042] In the above embodiment, the abutment piece 57 has the eighth extension portion 63 and the ninth extension portion 64, and is connected to the fitting portion 36. However, the present invention is not limited to this configuration. The abutment piece 57 only needs to abut against the back plate 30 when the runner 21 is shifted, and does not necessarily need to be integral with the fitting portion 36. The abutment piece 57 may be a separate member attached to the fitting portion 36.

[0043] In the above embodiment, an example has been described in which the screw 55 is completely tightened into the first side surface 16 or the second side surface 17, and then the provisionally fastened screw 39 is also tightened to fix the first side surface 16 or the second side surface 17, but this is not the only possible configuration. The provisionally fastened screw 39 may be removed from the first side surface 16 and the second side surface 17 after the mounting bracket 22 is fixed by the screw 55. In other words, the mounting bracket 22 may be fixed by the screw 55 only.

[0044] In the above embodiment, the fixing portion 34 has the through hole 38 for fixing the mounting bracket 22 to the beam 11 and the long hole 40 for positioning the runner 21 relative to the beam 11, but the present invention is not limited to this configuration. The fixing portion 34 may have only the through hole 38.

[0045] In the above embodiment, the seventh extension portion 62 is bent in a mountain shape toward the upper surface of the opposing fifth extension portion 60, and is in contact with the fifth extension portion 60 at a position toward the right, but the present invention is not limited to this configuration. The seventh extension portion 62 may be spaced apart by a dimension smaller than the thickness of the upper plate 31. In other words, it is sufficient that at least a portion of the seventh extension portion 62 is close enough to the fifth extension portion 60 to be able to sandwich the upper plate 31.

[0046] [Appendix 1] A mounting bracket formed from a metal plate for attaching a runner to a structural member, A fixing portion that is fixed to a side surface of the structural material; a fitting portion into which the runner is fitted; a connecting portion that connects the fixed portion and the fitting portion and is elastically deformable in the vertical direction.

[0047] [Appendix 2] The runner has an upper plate, a back plate, and a lower plate and is open in one direction, the fixing portion has a through hole penetrating along the first direction, the connecting portion has a first extending portion extending in one direction from the fixed portion, a second extending portion extending while curving downward from the first extending portion, and a third extending portion extending from the second extending portion in a direction opposite to the one direction, The mounting bracket described in Appendix 1, wherein the fitting portion has a clamping piece that vertically clamps the upper plate of the runner, and an abutment piece that abuts against the back plate of the runner.

[0048] [Appendix 3] Structural materials; A plurality of mounting brackets fixed to the structural material; a runner supported by the plurality of mounting brackets, The above mounting brackets are A fixing portion fixed to the structural material; a fitting portion that is fitted to the runner; 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.

[0049] [Appendix 4] The runner has an upper plate, a back plate, and a lower plate and is open in one direction, the fixing portion has a through hole penetrating along the first direction, the connecting portion has a first extending portion extending in one direction from the fixed portion, a second extending portion extending while curving downward from the first extending portion, and a third extending portion extending from the second extending portion in a direction opposite to the one direction, A ceiling support structure as described in Appendix 3, wherein the fitting portion has a clamping piece that holds the upper plate of the runner in the vertical direction, and an abutment piece that abuts against the back plate of the runner. [Explanation of symbols]

[0050] 11... Beam (structural material) 12. Ceiling support structure 16...1st side (side) 17...Second side (side) 21 Runner 22 Mounting bracket 30...Backboard 31...Upper plate 32...lower plate 34... Fixed part 35...Connection part 36... Fitting part 56...Pinch piece 57...Abutting piece 50...1st Enbe 51...2nd Enbe

Claims

1. A mounting bracket formed from a metal plate for attaching a runner to a structural member, A fixing portion that is fixed to a side surface of the structural material; a fitting portion into which the runner is fitted; a connecting portion that connects the fixed portion and the fitting portion and is elastically deformable in the vertical direction.

2. The runner has an upper plate, a back plate, and a lower plate and is open in one direction, The fixing portion has a through hole penetrating along the first direction, The connecting portion has a first extending portion extending in one direction from the fixing portion, a second extending portion extending while curving downward from the first extending portion, and a third extending portion extending from the second extending portion in a direction opposite to the one direction, 2. The mounting bracket according to claim 1, wherein the fitting portion has a clamping piece that vertically clamps and holds the upper plate of the runner, and an abutment piece that abuts against the back plate of the runner.

3. Structural materials; A plurality of mounting brackets fixed to the structural material; a runner supported by the plurality of mounting brackets, The above mounting brackets are A fixing portion fixed to the structural material; a fitting portion that is fitted to the runner; 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.

4. The runner has an upper plate, a back plate, and a lower plate and is open in one direction, The fixing portion has a through hole penetrating along the first direction, The connecting portion has a first extending portion extending in one direction from the fixing portion, a second extending portion extending while curving downward from the first extending portion, and a third extending portion extending from the second extending portion in a direction opposite to the one direction, 4. The ceiling support structure according to claim 3, wherein the fitting portion has a clamping piece that vertically clamps the upper plate of the runner, and an abutment piece that abuts against the back plate of the runner.

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