Scaffold board fixing member

Abstract

To provide a scaffold board fixing member for fixing a scaffold board to a ceiling joist receiver.SOLUTION: The scaffold board fixing member 1 includes a fixing body part 3, a bolt 11 and a T-shaped nut 13, and a rubber band. A through hole 5 into which a rubber band is inserted and a female screw 9 into which a bolt 11 is screwed are formed in the fixing body part 3. A T-shaped nut 13 is screwed to the bolt 11. A rubber plate 15 in contact with a ceiling joist receiver is mounted on the T-shaped nut 13. A rubber plate 17 is mounted on a part of the fixing body part 3 opposed to the T-shaped nut 13.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a scaffolding board fixing member. [Background technology]

[0002] An example of an indoor unit of an air conditioner is a built-in indoor unit that is embedded in a ceiling. When inspecting a built-in indoor unit, a worker enters the back side of the ceiling through an inspection hatch provided in the ceiling and inspects the indoor unit from behind the ceiling.

[0003] In a ceiling (raised ceiling) where a built-in indoor unit is installed, the ceiling material is supported by suspension bolts fixed to the building's frame. Components called joists are placed on the ceiling material to form the framework. Attached to the joists are components called joist supports, which support the joists. The joist supports are supported by suspension bolts.

[0004] Depending on the installation location of the indoor unit, the distance from the inspection hatch to the indoor unit may be far. In such cases, a scaffolding board is installed to enter the underside of the ceiling material and perform the inspection work. The scaffolding board is positioned so that it spans between the joist supports supported by the suspension bolts. By installing the scaffolding board, the worker can place their feet on the board and move closer to the indoor unit. Installing the scaffolding board also ensures a working space. Examples of documents disclosing such scaffolding boards are Patent Document 1 and Patent Document 2. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3205669 [Patent Document 2] Japanese Patent Application Publication No. 6-322976 Summary of the Invention [Problem to be solved by the invention]

[0006] Since workers will be moving or performing inspection work by placing their feet on the scaffolding boards, to ensure safety, the scaffolding boards must be secured to the joist supports to prevent them from moving.

[0007] The present disclosure has been made from the perspective of ensuring such safety, and its purpose is to provide a scaffolding board fixing member that fixes a scaffolding board to a joist support. [Means for solving the problem]

[0008] The scaffolding board fixing member according to the present disclosure is a scaffolding board fixing member for fixing a scaffolding board to a soffit support that supports a soffit arranged on a ceiling material, and includes a pair of fixing main bodies, a tightening member, and a biasing member. The pair of fixing main bodies are attached to the soffit support in a manner that sandwiches the soffit support from a second direction that intersects with a first direction in which the soffit support extends, and each has a through hole formed along the first direction when attached to the soffit support. A tightening member is provided on each of the pair of fixing main bodies, and fixes the fixing main body to the soffit support with the soffit support sandwiched between them. The biasing member is attached to the through hole when fixed to the soffit support, and biases the scaffolding board against the soffit support. A scaffolding board is placed so as to span between two adjacent joist supports, and the pair of fixing main bodies are fixed to the joist supports in a manner that sandwiches the board between them.By inserting a biasing member into each of the through holes of the pair of fixing main bodies, the scaffolding board is biased against the joist supports. [Effects of the Invention]

[0009] According to the scaffolding board fixing member of the present disclosure, a pair of fixing main bodies are fixed to the joist support so as to sandwich the scaffolding board placed on the joist support. Furthermore, by inserting a biasing member into each of the through holes of the pair of fixing main bodies, the scaffolding board is biased against the joist support. This prevents the scaffolding board from sliding on the joist support or bouncing off the joist support. As a result, safety can be ensured when workers move around behind the ceiling material, for example. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a partial perspective view showing an example of a mounting structure for a ceiling material in which a scaffolding board fixing member according to an embodiment is used. FIG. [Figure 2] FIG. 2 is a perspective view showing the structure of a scaffolding board fixing member according to an embodiment. [Figure 3] FIG. 10 is a perspective view showing one step in the procedure for fixing a scaffolding board using a scaffolding board fixing member in this embodiment. [Figure 4] 4 is a perspective view showing a step performed after the step shown in FIG. 3 in the embodiment. FIG. [Figure 5] 5 is a perspective view showing a step performed after the step shown in FIG. 4 in the embodiment. FIG. [Figure 6] 6 is a perspective view showing a step performed after the step shown in FIG. 5 in the embodiment. FIG. [Figure 7] FIG. 7 is a front view of the step shown in FIG. 6 in the embodiment. [Figure 8] FIG. 7 is a side view of the step shown in FIG. 6 in the embodiment. [Figure 9] FIG. 7 is a partial top view showing a step of a procedure for attaching a rubber band in the step shown in FIG. 6 in the embodiment. [Figure 10] 10 is a partial top view showing a step performed after the step shown in FIG. 9 in the embodiment. FIG. [Figure 11] FIG. 11 is a partial side view of the step shown in FIG. 10 in the embodiment. [Figure 12] 11 is a partial top view showing a step performed after the step shown in FIG. 10 in the embodiment. FIG. [Figure 13] FIG. 13 is a partial side view of the step shown in FIG. 12 in the embodiment. [Figure 14] FIG. 10 is a partial side view showing one step of another procedure for attaching the rubber band in the same embodiment. [Figure 15]15 is a partial side view showing a step performed after the step shown in FIG. 14 in the embodiment. FIG. [Figure 16] FIG. 10 is a partial side view showing one step of a procedure for attaching a rubber pad in the embodiment. [Figure 17] 16 is a partial side view showing a step performed after the step shown in FIG. 15 in the embodiment. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] The scaffolding board fixing member according to the embodiment will be described. (Ceiling material mounting structure) First, we will explain the mounting structure of the ceiling material to which the scaffolding boards are attached. As shown in Figure 1, a panel-shaped ceiling material 31 has a plurality of rafters 33 arranged as a framework on the back side of the ceiling material 31. Each of the plurality of rafters 33 is arranged to extend in one direction, and is also arranged at intervals from each other in another direction substantially perpendicular to the one direction.

[0012] A plurality of siding supports 35 are attached to the siding 33 to support the siding 33. Each of the plurality of siding supports 35 is attached so as to extend in another direction substantially perpendicular to the one direction in which the siding support 33 extends, and is attached at intervals from one another in one direction.

[0013] The joist supports 35 are supported by hanging bolts 37 fixed to the building frame (not shown). When working on the back side of the ceiling material 31, scaffolding boards 41 are attached so as to span adjacent joist supports 35 (35a, 35b) supported by the hanging bolts 37.

[0014] (Structure of scaffolding board fixing members) Next, a specific description will be given of an example of the scaffolding board fixing member 1 that fixes the scaffolding board 41 to the joist support 35. As shown in Fig. 2, the scaffolding board fixing member 1 includes a fixing main body 3, a bolt 11 and a T-nut 13 as fastening members, and further includes a rubber band 21 (see Fig. 6, etc.) as an elastic band that serves as a biasing member.

[0015] The fixed main body 3 is formed, for example, by a substantially U-shaped metal fitting having an opening 7 formed therein for receiving the soffit support 35 (see FIG. 1). The opening 7 receives the soffit support 35 from a direction intersecting the one direction in which the soffit support 35 extends.

[0016] The fixed main body 3 has a female thread 9 into which the bolt 11 screws. The female thread 9 is formed in a direction substantially perpendicular to one direction in which the soffit support 35 extends when the fixed main body 3 is attached to the soffit support 35. The female thread 9 is formed so as to penetrate the fixed main body 3 from one end side of the fixed main body 3 toward the open portion 7.

[0017] A T-nut 13 is threaded onto the bolt 11. A rubber plate 15 is attached to the T-nut 13 as an anti-slip member that comes into contact with the joist support 35. A rubber plate 17 is also attached to the part of the fixed main body 3 facing the T-nut 13 as an anti-slip member that comes into contact with the joist support 35.

[0018] Furthermore, the fixing body 3 is formed with a through hole 5 through which the rubber band 21 is inserted. The through hole 5 is formed along one direction in which the joist support 35 extends when the fixing body 3 is attached to the joist support 35. The scaffolding board fixing member 1 according to the embodiment is configured as described above.

[0019] (Fixing procedure and effects of scaffolding board fixing components) Next, we will explain an example of a procedure for fixing a scaffolding board 41 (see FIG. 1) to a joist support 35 using the above-mentioned scaffolding board fixing member 1. As shown in FIG. 3, first, the scaffolding board 41 is placed so as to span between adjacent joist support 35a and joist support 35b.

[0020] Next, as shown in Fig. 4, a first fixed body part 3a and a second fixed body part 3b are prepared as a pair of fixed body parts 3. The first fixed body part 3a and the second fixed body part 3b are placed on the joist support 35a so as to sandwich the scaffolding board 41 therebetween.

[0021] At this time, the joist support 35a is received in the open portion 7 of the fixed main body 3 from a direction intersecting the direction in which the joist support 35a extends, and the fixed main body 3 is brought into contact with the longitudinal end face of the scaffolding board 41. Next, the first fixed main body 3a and the second fixed main body 3b are temporarily fixed to the joist support 35a by temporarily tightening the bolts 11 so that the joist support 35a is sandwiched between the rubber plates 15 (see FIG. 3) and 17 (see FIG. 3).

[0022] Next, as shown in Figure 5, a third fixed body part 3c and a fourth fixed body part 3d are further prepared as a pair of fixed body parts 3, and the same procedure is performed. A joist support 35b is received in the opening 7 of the fixed body part 3, and the third fixed body part 3c and the fourth fixed body part 3d are brought into contact with the longitudinal end faces of the scaffolding plank 41 so as to sandwich the scaffolding plank 41. Next, the bolts 11 are temporarily tightened so that the joist support 35b is sandwiched between the rubber plates 15 (see Figure 3) and 17 (see Figure 3), thereby temporarily fixing the third fixed body part 3c and the fourth fixed body part 3d to the joist support 35b.

[0023] Next, fine adjustments are made to the alignment of the first fixed body portion 3a, the second fixed body portion 3b, the third fixed body portion 3c, and the fourth fixed body portion 3d, as necessary. Next, the bolts 11 of the first fixed body portion 3a to the fourth fixed body portion 3d are further tightened to fix the first fixed body portion 3a and the second fixed body portion 3b to the joist support 35a. Furthermore, the third fixed body portion 3c and the fourth fixed body portion 3d are fixed to the joist support 35b.

[0024] Here, when the fixed main body part 3 is fixed to the soffit support 35, the inner wall surface of the through hole 5 located on the side closer to the soffit support 35, i.e., the inner wall surface on the lower side of the through hole 5, is preferably located at a position that does not exceed the top surface of the scaffolding board 41 and is slightly lower than the top surface of the scaffolding board 41 (see Figure 8).

[0025] 6, 7 and 8, a circular rubber band 21 is attached to the fixing body 3 as a biasing member that biases the scaffolding plank 41 against the joist support 35 to prevent the scaffolding plank 41 from bouncing up. The procedure for attaching the rubber band 21 will be described.

[0026] As shown in Figure 9, first, a portion (one side) of the annular rubber band 21 that has been twisted half a turn is inserted through the through hole 5 of one of the fixed main bodies 3 (3a) from the side where the scaffolding plank 41 is placed to the side where the scaffolding plank 41 is not placed. Next, as shown in Figures 10 and 11, one side of the rubber band 21 protruding from the through hole 5 is pulled upward and returned to the side where the scaffolding plank 41 is placed, and hooked onto the fixed main body 3 (3a).

[0027] As a result, one side of rubber band 21 is attached to fixed main body part 3 (3a) as shown in Figures 12 and 13. For the other part (other side) (not shown) of circular rubber band 21 that has been twisted half a turn, the same operation as that performed for one side of rubber band 21 is performed on the other fixed main body part (not shown), so that the other side of rubber band 21 is attached to the other fixed main body part.

[0028] At this time, with the fixed main body 3 fixed to the joist support 35, the lower wall surface of the through hole 5 is slightly lower than the upper surface of the scaffolding board 41. Therefore, by placing the rubber band 21 on the lower wall surface of the through hole 5, the scaffolding board 41 is urged toward the joist support 35.

[0029] In this way, one end of the scaffolding plank 41 is urged toward the joist support 35 by the rubber band 21. By performing the same work as that performed on the one end of the scaffolding plank 41 on the other end of the scaffolding plank 41, the other end of the scaffolding plank 41 is urged toward the joist support 35 by the rubber band 21. By this series of work, both the one end and the other end of the scaffolding plank 41 are urged toward the joist support 35.

[0030] According to the scaffolding board fixing member 1 described above, a pair of fixing main bodies 3 are fixed to the joist support 35 so as to sandwich the scaffolding board 41 placed on the joist support 35. Furthermore, the scaffolding board 41 is urged toward the joist support 35 by the rubber band 21 hooked to the fixing main bodies 3 so as to span between the pair of fixing main bodies 3.

[0031] This ensures safety when a worker moves behind the ceiling material 31 or when performing maintenance work behind the ceiling material 31. In other words, when a worker places his / her feet on the scaffolding plank 41 or while his / her feet are on the scaffolding plank 41, the scaffolding plank 41 can be prevented from sliding on the joist support 35 or from bouncing up from the joist support 35. As a result, it is possible to prevent the worker from losing balance and tripping or falling.

[0032] Furthermore, by using the rubber band 21 as the biasing member, it can be applied to scaffolding boards 41 of various sizes, and the scaffolding boards 41 can be easily biased against the joist support 35.

[0033] (Variation 1) In the above-described scaffolding board fixing member 1, the case where the rubber band 21 is hooked onto the fixing main body 3 itself to urge the scaffolding board 41 onto the joist support 35 has been described as an example. However, the method of hooking the rubber band 21 is not limited to this, and the rubber band 21 may also be hooked onto the head of the bolt 11.

[0034] As shown in Figure 14, a portion (one side) of the annular rubber band 21 is inserted into the through hole 5 of one of the fixing main bodies 3. Next, as shown in Figure 15, one side of the rubber band 21 protruding from the through hole 5 is pulled and hooked onto the head of the bolt 11 protruding from the fixing main body 3. In this way, by hooking the rubber band 21 onto the head of the bolt 11, the scaffolding board 41 can also be biased against the joist support 35.

[0035] (Variation 2) Furthermore, although rubber band 21 has been described as an example of a biasing member (elastic band) that biases scaffolding board 41 against joist support 35, the biasing member is not limited to an elastic band and may be an elastic pad. For example, rubber pad 23 made of rubber may be used. Rubber pad 23 has protrusion 23a that protrudes from through hole 5 (see FIG. 16).

[0036] After the pair of fixing bodies 3 are fixed to the joist support 35 so as to sandwich the scaffolding board 41, the rubber pad 23 is inserted into the through hole 5 as shown in Figures 16 and 17. At this time, with the fixing body 3 fixed to the joist support 35, the lower inner wall surface of the through hole 5 is in a position that does not exceed the upper surface of the scaffolding board 41.

[0037] Therefore, when the rubber pad 23 is inserted into the through hole 5, the protruding portion 23a of the rubber pad 23 protruding from the through hole 5 urges the scaffolding board 41 toward the joist support 35. In addition, it is preferable to provide the rubber pad 23 with a return portion 23b so that the rubber pad 23 does not easily come out of the through hole 5.

[0038] In this way, the rubber pads 23 urge one end and the other end of the scaffolding board 41 toward the joist support 35, thereby preventing the scaffolding board 41 from sliding on the joist support 35 or bouncing off the joist support 35.

[0039] In the above-described scaffolding board fixing member 1, the elastic bands or elastic pads serving as the biasing members are made of rubber. However, the material is not limited to rubber, and elastic bands or elastic pads made of resin such as elastomer or silicone may also be used.

[0040] The scaffolding board fixing members 1 explained in each embodiment can be combined in various ways as required.

[0041] The embodiments disclosed herein are examples and are not intended to be limiting. The scope of the present disclosure is defined by the claims, not the scope described above, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0042] The present disclosure includes the following aspects. [Appendix 1] A scaffolding board fixing member that fixes a scaffolding board to a soffit support that supports a soffit arranged on a ceiling material, A pair of fixed main bodies are attached to the siding support in a manner that sandwiches the siding support from a second direction that intersects with a first direction in which the siding support extends, and each of the fixed main bodies has a through hole formed along the first direction when attached to the siding support; a fastening member provided on each of the pair of fixing main bodies, the fastening member fastening the fixing main body to the soffit support in a state in which the soffit support is sandwiched; A biasing member that is attached to the through hole while being fixed to the joist support and biases the scaffolding board against the joist support; Equipped with A scaffolding board fixing member in which the scaffolding board is placed so as to span between two adjacent joist supports, and the pair of fixing main body parts are fixed to the joist supports in a manner that the pair of fixing main body parts are sandwiched between the pair of fixing main body parts, thereby causing the scaffolding board to be biased against the joist supports by inserting the biasing member into each of the through holes of the pair of fixing main body parts.

[0043] [Supplementary Note 2] The biasing member includes an annular elastic band, A scaffolding board fixing member as described in Appendix 1, in which one of the elastic bands inserted into the through hole from the side where the scaffolding board is located toward the side where the scaffolding board is not located is hooked onto one of the fixing main body parts from the side where the scaffolding board is not located, and the other of the elastic bands inserted into the through hole from the side where the scaffolding board is located toward the side where the scaffolding board is not located is hooked onto the other fixing main body part from the side where the scaffolding board is not located.

[0044] [Supplementary Note 3] The biasing member includes an elastic stopper having a protrusion that protrudes from the through hole when inserted into the through hole, A scaffolding board fixing member as described in Appendix 1, in which for each of a pair of fixing main body parts, the elastic stopper is inserted into the through hole from the side opposite to the side where the scaffolding board is located toward the side where the scaffolding board is located, and the scaffolding board is urged against the joist support by the protruding part protruding toward the side where the scaffolding board is located.

[0045] [Appendix 4] A scaffolding board fixing member according to Appendix 3, wherein the elastic stopper includes a barb that prevents the elastic stopper from slipping out of the through hole.

[0046] [Appendix 5] A scaffolding board fixing member described in any one of Appendices 1 to 4, wherein the through hole is formed at a position such that, when the fixing main body portion is fixed to the joist support and the scaffolding board is placed on the joist support, the inner wall surface located closer to the joist support does not exceed the upper surface of the scaffolding board.

[0047] [Appendix 6] The scaffolding board fixing member according to any one of Appendices 1 to 5, wherein the tightening member includes a bolt nut having a T-nut.

[0048] [Appendix 7] A scaffolding board fixing member described in any one of Appendices 1 to 6, wherein anti-slip members are attached to the portions of the fixing main body and the tightening member that abut against the joist support.

[0049] [Appendix 8] A scaffolding board fixing member described in any one of Appendices 1 to 7, wherein the fixing main body is formed by a U-shaped metal fitting having an open portion through which the joist support is inserted. [Industrial Applicability]

[0050] The present disclosure is effectively utilized to secure scaffolding boards to the underside of ceiling materials. [Explanation of symbols]

[0051] 1 Scaffolding board fixing member, 3 Fixed main body part, 3a First fixed main body part, 3b Second fixed main body part, 3c Third fixed main body part, 3d Fourth fixed main body part, 5 Through hole, 7 Opening part, 9 Female screw, 11 Bolt, 13 T-nut, 15, 17 Rubber plate, 21 Rubber band, 23 Rubber pad, 23a Protruding part, 23b Return part, 31 Ceiling material, 33 Rafter, 35 Rafter support, 35a Rafter support, 35b Rafter support, 37 Hanging bolt, 41 Scaffolding board.

Claims

1. A scaffolding board fixing member that fixes a scaffolding board to a soffit support that supports a soffit arranged on a ceiling material, A pair of fixed main bodies are attached to the siding support in a manner that sandwiches the siding support from a second direction that intersects with a first direction in which the siding support extends, and each of the fixed main bodies has a through hole formed along the first direction when attached to the siding support; a fastening member provided on each of the pair of fixing main bodies, the fastening member fastening the fixing main body to the soffit support in a state in which the soffit support is sandwiched; A biasing member that is attached to the through hole while being fixed to the joist support and biases the scaffolding board against the joist support; Equipped with A scaffolding board fixing member in which the scaffolding board is placed so as to span between two adjacent soffit supports, and the pair of fixing main body parts are fixed to the soffit supports in a manner that the pair of fixing main body parts are sandwiched between the pair of fixing main body parts, and the biasing member is inserted into each of the through holes of the pair of fixing main body parts, thereby biasing the scaffolding board against the soffit supports.

2. the biasing member includes an annular elastic band; A scaffolding board fixing member as described in claim 1, wherein one of the elastic bands inserted into the through hole from the side where the scaffolding board is located toward the side where the scaffolding board is not located is hooked onto one of the fixing main body parts from the side where the scaffolding board is not located, and the other of the elastic bands inserted into the through hole from the side where the scaffolding board is located toward the side where the scaffolding board is not located is hooked onto the other fixing main body part from the side where the scaffolding board is not located, thereby causing the scaffolding board to be biased against the joist support.

3. the biasing member includes an elastic stopper having a protrusion that protrudes from the through hole when inserted into the through hole, A scaffolding board fixing member as described in claim 1, wherein for each of a pair of fixing main body parts, the elastic stopper is inserted into the through hole from the side opposite to the side where the scaffolding board is located toward the side where the scaffolding board is located, and the scaffolding board is biased against the joist support by the protruding portion protruding toward the side where the scaffolding board is located.

4. The scaffolding board fixing member according to claim 3 , wherein the elastic stopper includes a barb that prevents the elastic stopper from slipping out of the through hole.

5. A scaffolding board fixing member as described in claim 1, wherein the through hole is formed at a position such that, when the fixing main body portion is fixed to the soffit support and the scaffolding board is placed on the soffit support, the inner wall surface located closer to the soffit support does not exceed the upper surface of the scaffolding board.

6. The scaffolding board fixing member according to claim 1 , wherein the fastening member comprises a bolt nut having a T-nut.

7. 2. A scaffolding board fixing member according to claim 1, wherein anti-slip members are attached to the portions of the fixing main body and the tightening member that abut against the soffit support.

8. The scaffolding board fixing member according to claim 1, wherein the fixing main body portion is formed by a U-shaped metal fitting having an opening through which the soffit support is inserted.

Images