JP4005435B2 - Soundproof panel frame structure and soundproof panel having the frame structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a frame structure of a soundproof panel that is installed in the vicinity of a road and that is particularly suitable for a soundproof panel having translucency.
[0002]
[Prior art]
A rectangular soundproof panel in which a frame is formed around a soundproof plate has been used mainly as a sound insulating panel having translucency, and the frame material is often a metal member, in particular, an extruded material of an aluminum alloy. The soundproof plate is often a resin plate, particularly one made of a polycarbonate resin that hardly scatters against impact and has self-extinguishing properties.
[0003]
However, when the frame body is formed around the soundproof plate, if the frame member made of a metal member and the soundproof plate made of a resin plate are firmly fixed by a fastening means or the like, the temperature will be increased when installed outdoors. The change causes a problem such as deformation of the resin plate. Therefore, as a means for buffering the resin plate, a hole larger than the diameter of the fastening means is drilled on the resin plate side, or a retaining material is attached to the resin plate and inserted into the opening groove provided in the frame material, and then the opening groove A method has been proposed in which a retaining edge is attached to the opening and the opening is made smaller than the retaining material to form a retaining structure.
[0004]
The soundproof panel having the structure as described above is lightweight and has strength by a frame material, has resistance to wind load and light impact, and is preferably used to form a soundproof wall installed around a road. It is
[0005]
[Problems to be solved by the invention]
However, due to the recent increase in speed and size of vehicles, traffic disasters occur on the road, and impacts from the vehicles themselves are received by the wall rails, but there is a risk of collision with the soundproof panel when the load loaded on the vehicles falls. The impact energy that is expected to be applied to soundproof panels in traffic disasters is becoming large. As a countermeasure, the soundproof panel is required to be more resistant to impact than the conventional one.
[0006]
In general, when a soundproof panel is installed as a soundproof wall, an impact test is performed as a confirmation of the resistance against the collision of the load as described above. The impact test is a distance of 1 m horizontally between the support panel and the soundproof panel. The weight of 300 kg is dropped to the center of the soundproof panel from the height set for each corresponding speed, and the standard of conformity is that the soundproof panel receives the weight, that is, the frame material is deformed Or the soundproof plate has slipped out of the frame member or the like, and the soundproof plate does not fall due to cracking or the like, and there is no scattering of members from the soundproof panel. By such an impact test, the weight is dropped on the soundproof plate, but unless the soundproof plate is broken or completely dropped from the frame material, the shock applied to the soundproof panel is opposed to each other. The frame material will take charge.
[0007]
Conventional soundproof panels are generally designed with a speed of 60 km / h, and for such soundproof panels, for example, when the impact test is performed at a speed of 80 km / h, the retaining structure is broken. If the soundproof plate falls off from the frame material, or the frame material is greatly deformed, the weight will fall from the soundproof panel or the retaining material will be scattered, so the standard cannot be met, so the set speed is It cannot be installed around the road of 80 km.
[0008]
As countermeasures against the occurrence of the above-mentioned problems, for example, a method of increasing the number of retaining materials attached, increasing the thickness of the frame material to increase the strength, or further strengthening the fastening between the frame materials Then, the balance between the strength of the opposing frame materials and the strength of the frame material and the resin plate was lost, and only one of the opposing frame materials was greatly deformed, or the frame material became too strong and shock was applied. Sometimes, if the resin plate cannot be deformed and is destroyed, another problem may occur. In particular, when only one of the opposing frame members is greatly deformed, if a retaining material is used, the load concentrates on the retaining material on the side of the greatly deformed frame material and the soundproof plate around it, and the retaining material May be destroyed and scattered, or the soundproof board may be damaged.
[0009]
Increasing the strength of each of the frame material, retaining material, and soundproof board requires changing the thickness and size of the member, which increases the material cost, and especially uses an extrusion mold material for the frame material, etc. In many cases, it takes time and cost to create a new extrusion die.
[0010]
Therefore, the present invention solves the above-described problems, and even when a load from a vehicle collides with the soundproof panel in a traffic disaster, the soundproof panel is unlikely to cause the load to pass through the soundproof panel or to scatter members. The frame structure is provided.
[0011]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, a frame structure of a rectangular soundproof panel in which a frame is formed using a frame material around a soundproof plate having sound insulation properties, and the frame materials facing each other with the soundproof plate interposed therebetween have hollow portions. the shape of the cross section is made to be different from each other, the reinforcing material is inserted into the hollow portion, bending strength of the frame member to each other which faces across the noise insulation plate, characterized in that has been made respectively substantially the same Is.
[0012]
According to the present invention, by making the bending strength of the opposing frame members of the rectangular soundproof panel substantially the same, only one of the opposing frame members is not significantly deformed, and the vehicle When the dropped load hits, the opposing frame members are deformed to the same extent. Therefore, it is possible to prevent the load from passing through the soundproof panel by significantly deforming one of the frames. Even when the retaining material is used for retaining, the load concentrates on the retaining material on the one side of the frame member, and it is possible to prevent the retaining material from being broken and scattered and the soundproof plate from being damaged.
[0013]
When the frame material of the soundproof panel is installed as a soundproof wall, the bending strength of the facing frame material passed between the columns may be substantially the same, for example, the soundproof panel between the columns installed upright. However, the frame material attached to the column is held by the column, so there is little risk of problems in terms of strength. It is preferable that the bending strengths of the opposing frame members are made substantially the same for all the frame members.
[0015]
Furthermore, the frame material is characterized in that orthogonal frame materials are fixed via members.
[0016]
According to the present invention, by attaching frame members that are orthogonal to each other through members, the members are deformed and the impact is absorbed to reduce the load applied to the vicinity of the attachment portion of the frame members, and soundproofing due to breakage of the frame members is achieved. Dropping of the plate from the frame material can be prevented.
[0017]
Further, the member is attached to one of the orthogonal members and has a substantially U-shape opening in the direction in which the other frame member extends.
[0018]
According to the present invention, the member is easily deformed by a load by using the member having such a shape, but the fixed orthogonal frame body is not easily detached from the member, and the shock absorption and the frame body are strong. It is possible to achieve both fixation.
[0019]
Here, the material used for forming the member is not particularly limited, but it is preferable to form the member using a metal material such as steel, stainless steel, and aluminum having high strength and high toughness.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 is a perspective view showing an embodiment of a soundproof panel according to the present invention. A soundproof panel 100 is formed by attaching a frame material 10 made of an aluminum alloy mold around a sound insulation plate 20 made of polycarbonate resin. It has a rectangular shape and transparency.
[0021]
FIG. 8 is a perspective view showing the details of the attachment of the frame member 10 to the sound insulation plate 20 of the conventional sound insulation panel, and the flow of attaching the frame members 10b and 10c to the sound insulation plate 20. Bolts 11 are inserted into the through holes 201 formed in the sound insulating plate 20, and nuts 12 are screwed into the inserted bolts 11 to be attached to the sound insulating plate as the retaining material 1. After the edge of the sound insulating plate 2 is inserted into the opening groove 10c3 provided in the frame member 10c with the retaining member 1 attached, the pressing edge 10c2 is attached to the main body 10c1 and the opening groove 10c3 is retained. The sound insulation plate 20 is made so as not to fall off the frame member 10c. Finally, the frame member 10b is assembled so as to be orthogonal to the frame member 10c, and the rivet 101 is placed in a through-hole previously drilled in each frame member, so that the frame member 10 is attached around the sound insulating plate 20. Will be.
[0022]
FIG. 2 is an explanatory view showing the impact test described above, and is attached so that the soundproof panel 100 is inserted between two struts 200 made of H-shaped steel installed at a height of 1 m, and a spring material (FIG. (Not shown). Here, the frame member 10a and the frame member 10c are in a state of being passed between the columns 200. In the impact test, a weight B having a weight of 300 kg is dropped from the height for each set speed to the center point P of the soundproof panel 100 to confirm whether the weight B can be received by the soundproof panel 100. It is.
[0023]
When the sound insulation plate 20 is not destroyed at the moment when the impact is applied to the central point P of the sound insulation plate 20, the impact is applied to each part of the sound insulation panel as a load, and as shown in FIG. The shearing plate 20 that acts as moments M1 and M2 on the main body 10c1 and the pressing edge 10c2 of the frame member that is in contact with the retaining material 1 or shears in the edge direction from the through hole 201 of the sound insulating plate 20 to which the retaining material 1 is attached. It acts on the part 202 as stress.
[0024]
Even if these portions are deformed, if the sound insulating plate 20 is held so as not to drop off, the load is passed between the columns 200 and acts on the opposing frame members 10a and 10c. Here, if there is a difference in bending strength between the frame members 10a and 10c, for example, if the bending strength of the frame member 10a is higher than that of the frame member 10c, the degree of deformation of the frame member 10c will be the moment when the impact is applied. 10a, and the weight B passes through the soundproof panel 100 due to the twisted shape of the soundproof panel 100. Further, regarding the moment acting on the retaining material 1 shown in FIG. In particular, the maximum moment M3 acting on the retaining material 1a near the center becomes large, and the retaining material 1a on the side of the frame material 10a is damaged, or the retaining material is prevented by the main body 10a1 and the trunk edge 10a2 of the frame material 10a. There is a greater risk that the sound insulation plate 20 will fall off the frame member 10a due to deformation of the portion in contact with 1a.
[0025]
FIG. 4 is an explanatory view showing a soundproof panel according to the present invention, which is applied during an impact test by making the bending strengths of the frame members 10a and 10c opposed to each other between the columns 200 substantially the same. As shown in this figure, the moments are substantially the same on the frame member 10a side and the frame member 10c side, and the maximum moments M3 and M4 to be applied are smaller than those shown in FIG. It is possible to reduce the risk of breakage of the material 1 and deformation of the abutting portion.
[0026]
FIG. 5 is a cross-sectional view showing an embodiment according to the present invention, in which a reinforcing material that is a square pipe is inserted into the hollow portions of the frame members 10a and 10b. The frame member 10a and the frame member 10b have shapes that can be fitted vertically and have different cross-sectional shapes, and therefore have different bending strengths with respect to the arrival direction α of the impact. In the present embodiment, the reinforcing member 2a inserted into the frame member 10a having a cross-sectional shape with a low bending strength is increased in bending strength by assuming that the reinforcing member 2b has a larger diameter than the reinforcing member 2b inserted into the frame member 10b. The bending strength is substantially the same as the bending strength on the frame member 10b side.
[0027]
FIG. 6 is an explanatory view showing an embodiment according to the present invention, in which orthogonal frame members are attached to either one and a substantially U-shaped member opened in the direction in which the other frame member extends. It shows the flow fixed via. A sound insulating plate 20 is attached to the frame member 10c, and a bolt 32 is inserted into a through hole 10c3 formed in the frame member 10c and a through hole 31 formed in the substantially U-shaped member 3, and a nut (FIG. And a substantially U-shaped member 3 is attached by opening in a direction in which the frame member 10d orthogonal to the frame member 10c extends. Subsequently, the main body 10d1 having a U-shaped cross section of the frame member 10d is assembled so that the substantially U-shaped member 3 can be fitted, and the pressing material 10d2, the sound insulating plate 20, the main body 10d1, and the substantially U-shaped member 3 are respectively drilled. The bolts 102a are inserted through the formed through holes, and nuts (not shown) are screwed to fix the respective members. Further, the lower surface of the main body 10d1 and the lower surface of the substantially U-shaped member 3 are fastened by the rivet 101.
[0028]
By setting it as such a structure, the frame materials 10 are not fixed directly, but the burden concerning the attachment part periphery of the frame material 10 can be reduced. In addition, as shown in FIG. 7, in the impact test in which the weight B is dropped to the center point of the soundproof panel 100, the load acting on the frame member 10 is reduced by the deformation of the member 3, and is also passed between the columns 200. The frame members 10a and 10c can smoothly bend downward, and the frame member 10, the sound insulating plate 20, the retaining member 1 and the like may be damaged by providing flexibility and absorbing the shock. Can be reduced. Further, since the member 3 is substantially U-shaped, it can be smoothly deformed with respect to the load, and the frame members orthogonal to each other of the main body 10d1 and the frame member 10c can be firmly fixed to each other by the member 3. Absorption and strong fixing of the frame can be achieved at the same time.
[0029]
【The invention's effect】
According to the present invention, by making the bending strength of the opposing frame members of the rectangular soundproof panel substantially the same, only one of the opposing frame members is not significantly deformed, and the vehicle When the dropped load hits, each of the opposing frame members is deformed to the same extent. Therefore, it is possible to prevent the load from passing through the soundproof panel by significantly deforming one of the frames. Even when the retaining member is used to prevent the retaining member, the load concentrates on the retaining member on the one side of the frame member, so that the retaining member can be prevented from being broken and scattered and the soundproof plate can be prevented from being damaged.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram showing an example of a soundproof panel to which the present invention is applied.
FIG. 2 is an explanatory view showing a state of an impact test of a soundproof panel.
FIG. 3 is an explanatory diagram showing a load acting on the soundproof panel during the impact test shown in FIG. 2;
4 is a cross-sectional view showing a load acting on the soundproof panel according to the present invention during the impact test shown in FIG. 3. FIG.
FIG. 5 is a cross-sectional view showing an embodiment of a soundproof panel having a frame structure according to the present invention.
FIG. 6 is an explanatory view showing an embodiment of a soundproof panel having a frame structure according to the present invention.
FIG. 7 is a side view showing the state of the soundproof panel according to the present invention during an impact test.
FIG. 8 is an explanatory view showing a flow of attachment of a frame structure and a frame body of a conventional soundproof panel.
FIG. 9 is a cross-sectional view showing a moment that acts to prevent a conventional sound insulation panel from coming off during the impact test shown in FIG. 2;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Retaining material 2 Reinforcement material 3 Substantially U-shaped member 10 Frame material 101 Rivet 102 Bolt 20 Sound insulation plate 201 Through hole 100 Sound insulation panel 200 Post B Weight P Center point M Moment

Claims (4)

A frame structure of a rectangular soundproof panel in which a frame body is formed using a frame material around a soundproof plate having sound insulation properties, and the frame materials facing each other across the soundproof plate have a hollow portion and have a cross section with each other. soundproofing panel that shape is made to be different, by the reinforcing member which is inserted into the hollow portion, bending strength of the frame member to each other which faces across the noise insulation plate, characterized in that has been made respectively substantially the same Frame structure. The frame structure of the soundproof panel according to claim 1, wherein the frame members are fixed to each other through orthogonal members. The frame structure of the soundproof panel according to claim 2 , wherein the member is attached to one of the orthogonal members and has an approximately U-shape opening in a direction in which the other frame member extends. A soundproof panel comprising the frame structure according to any one of claims 1 to 3 .

Images