Sound insulation panel fixing fixture and fixing method

Abstract

To provide a fixing bracket and a fixing method of a sound insulation plate capable of fixing a translucent sound insulation plate to a column by the fixing bracket fitted with low noise without hitting by a hammer or the like.SOLUTION: A fixing bracket 1 of a sound insulation plate inserted into a gap between a column H1 of a sound insulation wall W1 and a translucent sound insulation plate B1 to press and fix the translucent sound insulation plate B1 to the column H1, comprises a V-shaped plate spring material 2 for pressing the end of the translucent sound insulation plate B1 with the restoring force at the time of elastic deformation, a push bracket 3 for pressing and expanding the open end side of the plate spring material 2, and a bolt set 4 having a bolt 40 and nuts (41, 42) to be screwed through the push bracket 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a fixing fitting and a fixing method for fixing a sound insulation board to a column.

Background Art

[0002] A translucent sound insulation wall is installed to shield (insulate) noise from noise sources such as highways, railways, and factories, and to take in light so that the outside of the sound insulation wall can be visually recognized to ensure visibility. This translucent sound insulation wall has a translucent sound insulation board made of a resin translucent plate such as an acrylic plate or a polycarbonate plate, a glass plate such as quartz glass or tempered glass, etc. inserted into a steel column such as an H-shaped steel and fixed by being pressed against the flange of the column with a fixing fitting.

[0003] A conventional fixing fitting 10 for fixing such a translucent sound insulation board to a column is generally made of a hot-dip galvanized SS400 hot-rolled steel plate for general structures. As shown in FIG. 10, it has a rectangular frame body with a trapezoidal horizontal cross-section where one side of the opposite sides is short, the other side opposite to this is long, and the remaining opposite sides are inclined to each other. This fixing fitting 10 is installed by driving the trapezoidal fixing fitting 10 between the translucent sound insulation board B1 made of an acrylic plate and the flange H1f of the column H1 after inserting the translucent sound insulation board B1 made of an acrylic plate into the column H1 made of an H-shaped steel. After that, the fixing fitting 10 is screwed and fixed to the web H1w of the column H1 with a bolt (M12) using a power tool such as an impact wrench through a circular tool hole 10a so as not to come off due to vibration or the like over time.

[0004] In recent years, sound insulation wall construction has mainly focused on replacement work. And since the replacement work is carried out on roads in use, there are inevitably many night-time construction works, causing problems with construction noise. That is, as described above, in the conventional fixing fitting 10, when fixing the translucent sound insulation board, driving the trapezoidal fixing fitting 10 between the translucent sound insulation board B1 and the flange H1f of the column H1 has been the cause of noise generation.

[0005] For example, Patent Document 1 discloses a fixing fitting for a translucent sound insulation board that has a circumferential wedge-shaped locking surface whose distance from the rotation center to the contact part gradually increases as it rotates, and is fixed to the central wall of the support by bolt fastening means at the rotation center with the plate material pressed against the side wall of the support (see Claim 1 of the claims of Patent Document 1, paragraphs

[0015] to

[0020] of the specification, FIGS. 4 and 7 of the drawings, etc.).

[0006] However, the fixing fitting described in Patent Document 1 also rotates the fixing fitting by hitting the fixing fitting with a hammer or the like to apply a blow to the part to be struck, and presses and fixes the translucent plate against the flange of the support, which remains a cause of noise generation.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] Therefore, the present invention has been devised in view of the above-described problems, and an object thereof is to provide a fixing fitting and a fixing method for a sound insulation board that can fix the sound insulation board to a support with a low noise without hitting with a hammer or the like.

Means for Solving the Problems

[0009] The fixing fitting for a sound insulation board according to the first invention is a fixing fitting for a sound insulation board that is inserted into the gap between the support of the sound insulation wall and the sound insulation board and presses and fixes the sound insulation board to the support, and has a U-shaped leaf spring material that presses the end of the sound insulation board with the restoring force during elastic deformation, a pressing fitting that pushes and expands the open end side of this leaf spring material, and a bolt set having a bolt and a nut that are screwed through this pressing fitting. , the leaf spring material, and the web of the column penetrates and screws By doing this, the open end side of the leaf spring material is pushed in and expanded by the push fitting, and pressed and fixed to the flange of the column. It is characterized by comprising , the leaf spring material is formed with a locking piece for locking the push fitting in a non-slidable manner. this.

[0011] No. 2 The fixing bracket for the sound insulation board according to the invention is, in the first invention, characterized in that the leaf spring material is formed by laminating a plurality of plate materials.

[0012] No. 3 The fixing bracket for the sound insulation board according to the invention is the first invention or the second In the invention, a pair of left and right of the leaf spring material and the pressing bracket are respectively provided, and the bolt set has a first nut for fixing the bolt to the column and a second nut for hooking to any one of the pair of pressing brackets.

[0013] No. 4 The fixing bracket for the sound insulation board according to the invention is, in any one of the first invention to the 3 In any of the inventions, a pressing angle made of an angle material is interposed between the end of the sound insulation board and the leaf spring material.

[0014] No. 5 The method for fixing a sound insulation board according to the invention is In any of the first to fourth inventions, A method for fixing a sound insulation board to a column, which uses the fixing bracket for the sound insulation board according to any one of claims 1 to 4 By turning the bolt or nut of the bolt set, the open end side of the leaf spring material is pushed in and expanded by the pressing bracket, and the sound insulation board is pressed and fixed to the column by the restoring force during the elastic deformation of the leaf spring material.

[0015] No. 6 The method for fixing a sound insulation board according to the invention is the 5 In the invention, claim 3By using the fixing bracket for the sound insulation board described in [reference], by turning the bolt of the bolt set, one of the pair of pressing brackets presses one open end side of the corresponding pair of leaf spring materials to push it in and spread it, thereby pressing and fixing the sound insulation board to the column. After that, by turning the second nut of the bolt set, the other of the pair of pressing brackets presses and spreads the other open end side of the corresponding pair of leaf spring materials, thereby pressing and fixing another sound insulation board different from the above-mentioned sound insulation board to the column.

Effect of the Invention

[0016] According to the first invention to the 6 According to the invention, by tightening the bolt, the leaf spring material can be pushed and spread to press and fix the sound insulation board to the column. Therefore, it is not necessary to insert the fixing bracket into the gap between the column and the sound insulation board by hitting it with a hammer or the like, the generation of impact sound can be prevented, and the noise of the installation work of the sound insulation wall can be reduced. Further, according to the first to sixth inventions, it is possible to surely prevent over-tightening of the bolt, and the fixing work of the sound insulation plate can be easily performed in a short time.

[0018] In particular, according to the 2 According to the invention, a single leaf spring material can be made thin and flexible, and the necessary pressing force can be ensured, and the sound insulation board can be pressed and fixed to the column with an appropriate pressing force.

[0019] In particular, according to the 3 According to the invention and the 6 According to the invention, it becomes possible to fix two sound insulation boards fixed to one column one by one, and there is no need to fix them at the same time. Therefore, it becomes possible to perform the fixing work of the sound insulation board with a small number of personnel.

[0020] In particular, according to the 4 According to the invention, it is possible to reduce the risk of damaging the sound insulation board during the fixing work or the like.

Brief Explanation of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Embodiments for Carrying Out the Invention

[0022] Hereinafter, the fixing bracket of the sound insulation board according to the embodiment of the present invention and the fixing method of the sound insulation board using the same will be described in detail with reference to the drawings.

[0023] [Fixing Bracket of Sound Insulation Board] First, with reference to FIGS. 1 to 6, the fixing bracket of the sound insulation board according to the embodiment of the present invention will be described. The case where a translucent sound insulation board B1 made of an acrylic plate is fixed to a column H1 made of an H-shaped steel by a fixing bracket 1 of the sound insulation board (hereinafter, also simply referred to as the fixing bracket 1) will be exemplified and described. FIG. 1 is a horizontal cross-sectional view showing the fixing structure of the sound insulation wall W1 in which the translucent sound insulation board B1 is fixed to the column H1 by the fixing bracket 1 of the sound insulation board according to the present embodiment, and FIG. 2 is a perspective view showing the fixing structure of the sound insulation wall W1.

[0024] As shown in FIGS. 1 and 2, a column H1 made of H-shaped steel is erected with its lower end embedded in a reinforced concrete structure such as a wall railing. On one side of the flange H1f of the column H1, a translucent soundproof panel B1 (B1') made of an acrylic plate is pressed and fixed by a fixing fitting 1. This soundproof wall W1 is a translucent soundproof wall that can block noise from noise sources such as highways and railway lines, take in light, and ensure visibility from the outside.

[0025] Note that at the four peripheral edges which are the ends of the translucent soundproof panel B1, a gasket G1 made of a rubber elastic body such as EPDM (ethylene propylene diene rubber) is fitted to protect the ends of the translucent soundproof panel B1 and seal it so that sound does not leak through the gaps.

[0026] FIG. 3 is a perspective view showing the fixing fitting 1 according to the present embodiment. As shown in FIG. 3, the fixing fitting 1 according to the present embodiment includes a pair of left and right plate spring members 2, 2 in a V shape, a pair of left and right pressing fittings 3, 3 that push and expand the open end sides of these plate spring members, respectively, and a bolt set 4 that is screwed through these pressing fittings.

[0027] (Plate spring member) FIG. 4 is a perspective view showing only the plate spring member 2 of the fixing fitting 1 according to the present embodiment. The plate spring member 2 is made of a stainless steel plate (SUS304) with a thickness of 1.5 mm having high corrosion and weather resistance, and is formed by bending from a strip-shaped steel plate body 20 with a width of about 45 mm × 177 mm.

[0028] Also, as shown in FIG. 4, in the plate spring member 2 according to the present embodiment, a plurality of (two in the illustrated form) steel plate bodies 20, 20 made of stainless steel plates overlap to form a pair of plate spring members 2. Therefore, the plate spring member 2 can be made into a flexible and deformable plate material by thinning the thickness of each steel plate body 20, 20, and can secure the necessary pressing force by overlapping a plurality of sheets.

[0029] Further, each steel plate body 20, 20 leaves a central portion 21 about 30 mm in length, and both end portions 22 thereof are bent to the same side (side 2a side), fall down and incline, forming a V shape (see also Fig. 1).

[0030] As shown in Fig. 1, this leaf spring material 2 is a spring material in which both bent end portions 22 are pushed open by being pushed by a pressing fitting 3 attracted to the web H1w side of the support column H1 on one side surface 2a which is the open end side (the side where both end portions 22 are bent and fallen) opened in a V shape. That is, the leaf spring material 2 elastically deforms when the tips of the pushed-open both end portions 22 contact the flange of the support column H1 or a pressing angle 5 described later as the pressing fitting 3 slides (slides) while contacting one side surface 2a. Then, the leaf spring material 2 presses and fixes one flange of the support column H1 by pressing the end portion of the translucent sound insulation plate B1 with the restoring force during elastic deformation thereof.

[0031] Further, as shown in Fig. 4, a bolt hole 23 for inserting an M12 bolt described later for penetrating the leaf spring material 2 is formed in the central portion 21 of one side surface 2a of this leaf spring material 2.

[0032] Then, as shown in Fig. 4, engaging pieces 24 are formed at both end portions 22 of this leaf spring material 2, which are cut and raised in a rectangular shape near both end portions. By bringing the tip surface of the engaging piece 24 into contact with the plate surface of the pressing fitting 3 that slides along one side surface 20a so as to be orthogonal (see also Fig. 1), the engaging piece 24 has a function of engaging so as not to be slidable to prevent the pressing fitting 3 from being further attracted to the web side of the support column H1. For this reason, the fixing fitting 1 can surely prevent the bolt from being tightened too much and the pressing force from becoming too high, and the fixing work of the translucent sound insulation plate B1 can be easily performed in a short time.

[0033] (Pressing fitting) FIG. 5 is a perspective view showing only the pressing fitting 3 of the fixing fitting 1 according to the present embodiment. As shown in FIG. 5, the pressing fitting 3 has a channel steel of 50 mm × 15 mm × 1.5 mm made of a stainless steel plate (SUS304) as the fitting body 30. That is, the fitting body 30 which is a channel steel is a fitting in which side wall portions 31 are formed along the longitudinal edges, and a bolt hole 32 through which a bolt 40 is inserted is formed at the center.

[0034] A pair of the pressing fittings 3, 3 according to the present embodiment are provided on the left and right corresponding to the above-described leaf spring material 2, and are pulled toward each other by being tightened with a bolt set 4, and slide and move along the inclined side surface 2a as described above, and have a function of pushing open the U-shaped leaf spring material 2 (see FIG. 1).

[0035] Further, since the longitudinal edges of the pressing fitting 3 are bent to form a channel steel having a U-shaped cross section, even when the leaf spring material 2 is pressed, both end portions 22 of the leaf spring material 2 are guided by the side wall portions 31 and the function of preventing the leaf spring material 2 from coming off the pressing fitting 3 is also provided.

[0036] (Bolt set) FIG. 6 is a perspective view mainly showing the bolt set 4 of the fixing fitting 1 according to the present embodiment. As shown in FIG. 6, the bolt set 4 is composed of an M12 bolt 40 made of a hot-dip galvanized rolled steel sheet for general structure (SS400), a first nut 41 screwed onto the bolt 40, a second nut 42, and the like.

[0037] Also, as shown in FIGS. 1 and 3, the bolt 40 is provided so as to penetrate the pair of leaf spring materials 2 through the bolt holes 23 and penetrate the pressing fitting 3 through the bolt hole 32. The bolt 40 has a function of reducing the distance between the pair of pressing fittings 3, 3 by being tightened with an impact wrench or the like and spreading the pair of leaf spring materials 2 with the respective pressing fittings 3, 3.

[0038] Then, as shown in FIGS. 3 and 6, a large washer 43 is attached to the bolt 40 at a position where it abuts against the pressing fittings 3, 3, and a resin washer 44 is attached between the large washer 43 and the bolt head 40a of the bolt 40. Also, resin washers 44 are attached between the large washer 43 and the second nut 42, and between the first nut 41 and the leaf spring material 2.

[0039] The large washer 43 according to the present embodiment is a stainless steel washer with a diameter of φ = 40 mm and a thickness of 3 mm, and the resin washer 44 according to the present embodiment is a washer made of nylon resin with a diameter of φ = 24 mm and a thickness of 2.5 mm.

[0040] (Pressing Angle) Also, as shown in FIGS. 1 and 2, a pressing angle 5 is interposed between the end portion (gasket G1) of the light-transmitting sound insulation plate B1 and the leaf spring material 2 in the fixing bracket 1 according to the present embodiment. The pressing angle 5 is an angle member made of stainless steel. This pressing angle 5 slides along one side that abuts against the web of the support column H1 by being pressed by the leaf spring material 2. Also, the other side of the pressing angle 5 is a member for preventing the sharp end portion of the leaf spring material 2 from damaging the light-transmitting sound insulation plate B1 by intervening between the light-transmitting sound insulation plate B1 and the leaf spring material 2.

[0041] [Method for Fixing Sound Insulation Plate] Next, with reference to FIGS. 7 to 9, the construction procedure of the method for fixing the sound insulation plate according to the embodiment of the present invention will be described. Taking as an example the case of constructing a light-transmitting sound insulation wall W1 by pressing and fixing the aforementioned light-transmitting sound insulation plate B1 from the inside against one of the flanges of the aforementioned support column H1 using the aforementioned fixing bracket 1. FIG. 7 is a process explanatory diagram showing the bolt insertion process of the method for fixing the sound insulation plate according to the present embodiment in a horizontal cross-sectional view.

[0042] (Bolt Insertion Process) As shown in FIG. 7, in the method for fixing the sound insulation board according to the present embodiment, first, a bolt insertion step of inserting the bolt 40 through the web H1w of the column H1 is performed. In the method for fixing the sound insulation board according to the present embodiment, as shown in FIG. 7, the case where the construction is carried out in the order of attachment starting from the first translucent sound insulation board B1 on the left side of the column H1 is exemplified.

[0043] In this step, in advance, the bolt 40 is inserted through the bolt holes 32 of the pair of left and right left pressing fittings 3 and the bolt holes 23 of the leaf spring material 2. Then, the bolt 40 in a state where the left pressing fitting 3 and the leaf spring material 2 are inserted is inserted through the bolt hole formed in the web H1w of the column H1. After that, the right leaf spring material 2 is inserted through the bolt 40 inserted through the column H1, the resin washer 44 is inserted, and it is tightened to a certain extent with the first nut 41 and fixed by screwing.

[0044] (First sound insulation board fixing step) FIG. 8 is a process explanatory diagram showing a horizontal cross-sectional view of the first sound insulation board fixing step of the method for fixing the sound insulation board according to the present embodiment. As shown in FIG. 8, in the method for fixing the sound insulation board according to the present embodiment, next, a first sound insulation board fixing step of pressing and fixing the first translucent sound insulation board B1 on the left side against the web H1w of the column H1 to be attached first to the flange H1f of the column H1 is performed.

[0045] Specifically, in this step, by turning the bolt head of the bolt 40 with an impact wrench or the like, the distance between the bolt 40 and the first nut 41 is reduced, and the leaf spring material 2 is expanded by the pressing fitting 3. Then, by expanding the leaf spring material 2, the left gasket G1 and the end portion of the translucent sound insulation board B1 are pressed through the pressing angle 5 and pressed against the flange H1f of one side (the upper part in the illustrated state) of the column H1 and fixed.

[0046] At this time, in this step, as described above, since the hooking piece 24 is formed on the leaf spring member 2, the bolt set 4 is tightened until the tip surface of the hooking piece 24 abuts against the plate surface of the pressing fitting 3 and the pressing fitting 3 cannot slide. In this way, the fixing bracket 1 has a clear reference for tightening the bolt set 4, it is easy to manage the appropriate pressing force by the leaf spring member 2, and anyone can easily complete the work in a short time.

[0047] (Second sound insulation panel fixing step) FIG. 9 is a process explanatory diagram showing a second sound insulation panel fixing step of the sound insulation panel fixing method according to the present embodiment in a horizontal cross-sectional view. As shown in FIG. 9, in the sound insulation panel fixing method according to the present embodiment, next, a second sound insulation panel fixing step is performed in which the remaining second translucent sound insulation panel B1' on the right side is pressed against the flange H1f of the column H1 with respect to the web H1w of the column H1 and fixed.

[0048] Specifically, in this step, the left leaf spring member 2 is inserted through the tip portion of the bolt 40 fixed to the web H1w of the column H1 in the previous step and protruding to the right, and further, the resin washer 44 is inserted, and the second nut 42 is tightened by turning it with an impact wrench or the like.

[0049] At this time, also in this step, as in the previous step, the bolt set 4 is tightened until the tip surface of the hooking piece 24 abuts against the plate surface of the pressing fitting 3 and the pressing fitting 3 on the right side cannot slide.

[0050] According to the sound insulation panel fixing bracket 1 and the sound insulation panel fixing method using the same according to the present embodiment described above, by tightening the bolt set 4 (bolt 40), the leaf spring member 2 can be expanded and the translucent sound insulation panels B1 and B1' can be pressed against the column and fixed. Therefore, it is not necessary to insert the fixing bracket 1 into the gap between the column H1 and the sound insulation panel by hitting it with a hammer or the like, the generation of impact sound can be prevented, and the noise of the installation work of the sound insulation wall W1 can be reduced.

[0051] Further, according to the fixing fitting 1 and the method for fixing a sound insulation panel using the same, since the light-transmitting sound insulation panels B1 and B1' are fixed with an appropriate pressing force by the leaf spring material 2 composed of a plurality of flexible sheets, they can be stably fixed even if the wind load acting on the sound insulation wall W1 changes. For this reason, the possibility that the light-transmitting sound insulation panels B1 and B1' rattle or that loosening of the members occurs over time is reduced.

[0052] Moreover, according to the fixing fitting 1 and the method for fixing a sound insulation panel using the same, it becomes possible to fix the two light-transmitting sound insulation panels B1 and B1' fixed to one support column H1 one by one, and at the same time, there is no need to fix a plurality of light-transmitting sound insulation panels B1 and B1' at once. Therefore, it becomes possible to perform the fixing work of the sound insulation panel with a small number of personnel.

[0053] As described above, the fixing fitting for a sound insulation panel and the method for fixing a sound insulation panel using the same according to the present embodiment have been described in detail. However, any of the above-described or illustrated embodiments merely shows one embodiment embodied in carrying out the present invention. Therefore, the technical scope of the present invention should not be construed in a limited manner by these.

[0054] In particular, among the two light-transmitting sound insulation panels B1 and B1' fixed to the support column H1, the case where the left first light-transmitting sound insulation panel B1 is fixed first has been illustrated. Needless to say, either one may be fixed first. However, when the right light-transmitting sound insulation panel B1' is fixed first, it is necessary to insert the bolt head of the bolt 40 of the bolt set 4 so as to come to the right side. This is because, in order to fix the bolt set 4 to the web H1w of the support column H1, the first nut 41 needs to be provided on the side where construction is performed later.

[0055] Also, although an acrylic plate has been illustrated as the sound insulation panel, the present invention is not limited thereto, and other light-transmitting sound insulation panels that transmit visible light, such as resin light-transmitting plates such as polycarbonate plates, quartz glass, and tempered glass, are also possible. Moreover, the present invention is not limited to light-transmitting sound insulation panels that transmit visible light, and can also be applied to the fixing of sound insulation panels that are made of steel plates or the like and do not transmit visible light and prevent the propagation of noise on the weight side.

Explanation of reference numerals

[0056] 1: Fixture (Fixture for Sound Insulation Panel) 10: Conventional Fixture 10a: Tool Hole 2: Leaf Spring Material 2a: One Side 20: Steel Plate Body 21: Central Part 22: Both Ends 23: Bolt Hole 24: Hanging Piece 3: Pressing Fixture 30: Fixture Body 31: Side Wall 32: Bolt Hole 4: Bolt Set 40: Bolt 40a: Bolt Head 41: First Nut (Nut) 42: Second Nut (Nut) 5: Pressing Angle W1: Sound Insulation Wall H1: Support Column B1, B1’: Translucent Sound Insulation Panel G1: Gasket

Claims

1. A fixing fitting for a sound insulation board that is inserted into the gap between the support column and the sound insulation board of a sound insulation wall to press and fix the sound insulation board to the support column, comprising a U-shaped leaf spring member that presses the end of the sound insulation board with the restoring force during elastic deformation, a push fitting that pushes and expands the open end side of the leaf spring member, and a bolt set having a bolt and a nut that are screwed through the push fitting, the leaf spring member, and the web of the support column to push and expand the open end side of the leaf spring member with the push fitting and press and fix it to the flange of the support column. The leaf spring member is formed with a locking piece for locking the push fitting so that it cannot slide. A fixing fitting for a sound insulation board, characterized by the above.

2. The leaf spring member is formed by laminating a plurality of plate materials. The fixing fitting for a sound insulation board according to claim 1, characterized by the above.

3. A pair of left and right leaf spring members and push fittings are respectively provided. The bolt set has a first nut for fixing the bolt to the support column and a second nut for locking to one of the pair of push fittings. The fixing fitting for a sound insulation board according to claim 1 or 2, characterized by the above.

4. A pressing angle made of an angle material is interposed between the end of the sound insulation board and the leaf spring member. The fixing fitting for a sound insulation board according to any one of claims 1 to 3, characterized by the above.

5. A method for fixing a sound insulation board to a support column, using the fixing fitting for a sound insulation board according to any one of claims 1 to 4, and by turning the bolt or nut of the bolt set, pushing and expanding the open end side of the leaf spring member with the push fitting, and pressing and fixing the sound insulation board to the support column with the restoring force during elastic deformation of the leaf spring member. A method for fixing a sound insulation board, which cites any one of claims 1 to 4, characterized by the above.

6. Using the fixing fitting for a sound insulation board according to claim 3, by turning the bolt of the bolt set, pushing and expanding the open end side of one of the pair of leaf spring members corresponding to one of the pair of push fittings to press and fix the sound insulation board to the support column, then turning the second nut of the bolt set, pushing and expanding the open end side of the other of the pair of leaf spring members corresponding to the other of the pair of push fittings to press and fix another sound insulation board different from the sound insulation board to the support column. The method for fixing a sound insulation board according to claim 5, which cites claim 3, characterized by the above.

Images