JP2005120694A - Sound isolation panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sound insulation panel which is set on a road shoulder of an expressway or the like for insulating noise from a traveling automobile wherein the sound insulation panel can absorb an impact force when the automobile collides therewith, to thereby prevent its sound insulating plate from being cracked and shattered. <P>SOLUTION: The sound insulation panel is formed of upper and lower horizontal frame materials, both vertical side frame materials, and the sound insulation plate having its four edges into insertion grooves formed in inner surfaces of the frame materials, respectively. Only the upper edge of the sound insulation plate is bolted to the upper horizontal frame material, and both the side edges are inserted into the insertion grooves formed in the respective vertical side frames together with pull-out resisting pieces attached to both the side edges of the sound insulation plate. Each pull-out resisting piece is formed of aluminum and has an L-shaped cross section. Thus when an impact force is applied to the sound insulation plate, a bent portion of the pull-out resisting piece is engaged with an engaging portion formed in a depth of the insertion groove, so that the pull-out resisting piece is plastically deformed to absorb the impact force. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sound insulation panel that is installed on a shoulder or side wall of a highway to block noise from a traveling automobile or the like.

  Conventionally, in order to prevent noise from automobiles traveling on highways from being transmitted to houses around the road, or to prevent a projectile from the road side from falling from the shoulder, The sound insulation panels are stretched along the road. As such a sound insulation panel, a rectangular frame is formed by upper and lower horizontal frame members and both vertical frame members, and a sound insulation plate is fitted into the rectangular frame, and the upper end portion of the sound insulation plate is used as an upper horizontal frame member. The sound insulation plate is fixed by a plurality of bolts, and both end portions and lower end portions of the sound insulating plate are pressed against the receiving portions of the vertical frame members and the lower horizontal frame members by pressing edges, and these pressing edges and receiving portions A structure having a structure in which both side end portions and lower end portions of the sound insulation plate are sandwiched by the above and the pressing edges are fixed to the both side vertical frame members and the lower horizontal frame member by bolts (for example, patents). Reference 1).

JP-A-9-151418

  However, according to such a sound insulation panel, both side end portions and lower end portions are fixed to both side vertical frame members and lower side frame members by bolts, but these both side vertical frame members, pressing edges and lower sides Since the support structure is simply sandwiched between the horizontal frame member and the pressing edge, when the automobile collides with the sound insulation plate, the sound insulation plate has an upper end portion fixed to the upper horizontal frame material by a plurality of bolts. While bending and deforming into a V-shaped cross section as a fulcrum, it is easy to absorb the impact force from both side edges and bottom edge between the vertical frame material and the pressing edge, and between the lower horizontal frame material and the pressing edge. The sound insulation board breaks and scatters in some cases, which causes a problem in terms of safety.

  In order to prevent the sound insulation plate from coming out of the rectangular frame, the four end portions of the sound insulation plate are firmly fixed to the upper and lower horizontal frame members and both vertical frame members constituting the rectangular frame with bolts. However, if the sound insulation plate is made of a resin plate having a large expansion and contraction rate due to heat like polycarbonate resin, the sound insulation plate may be deformed in a wavy shape due to the expansion and contraction, and the appearance may be significantly impaired. In addition, there is a problem in that the impact force is concentrated on the fixing portion by the bolts at the four end portions of the sound insulation plate, and the sound insulation plate is cracked or broken.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to absorb the impact force when a car or the like collides, and the synthetic resin sound insulating board is instantaneously greatly refracted and deformed. In addition, the sound insulation panel can be prevented from being deformed into a wavy shape by effectively absorbing the expansion and contraction of the sound insulation plate that occurs due to a temperature difference between winter and summer. To provide.

  In order to achieve the above object, a sound insulation panel according to the present invention includes, as described in claim 1, an upper and lower horizontal frame member provided with insertion grooves on upper and lower opposing surfaces for receiving upper and lower ends of a synthetic resin sound insulation plate. A rectangular frame is formed by both side vertical frame members provided on both left and right surfaces with insertion grooves for receiving both side ends of the sound insulation plate, and the four sides of the sound insulation plate are inserted into the upper, lower, left and right insertion grooves of the rectangular frame. In the sound insulation panel in which the end portion is inserted and supported, the base end portion of the pulling resistance piece that can be plastically deformed is fixed to the both end portions of the sound insulation plate, and the outer end portion (tip portion) of the pulling resistance piece Is bent, and the bent portion is engaged with an engaging portion formed on the deep bottom side of the insertion groove to generate a pull-out resistance.

  In the sound insulation panel configured as described above, the invention according to claim 2 is characterized in that the both side vertical frame members are arranged inwardly at a rear end portion of a vertically long rectangular frame plate portion having a constant width in the width direction in the front-rear direction. A sound insulation plate receiving plate portion of a certain width that projects the back surface of the side end portion of the sound insulation plate is projected toward the front, and the front end facing portion of the vertical pushing edge is fixed to the front end portion side of the frame plate portion. An insertion groove for clamping the side end portion of the sound insulation plate with the base end portion of the pullout resistance piece to which the base end portion of the pullout resistance piece is fixed between the opposing surfaces of the vertical pushing edge and the sound insulation plate receiving plate portion Furthermore, a gap in which the bent portion of the pull-out resistance piece can be disposed between the opposing surfaces of the frame plate portion and the vertical pressing edge, and an outer surface of the vertical pressing edge facing the gap is formed. The structure is formed in the engaging portion of the bent portion of the pulling resistance piece.

  Furthermore, in the invention according to claim 3, the upper end portion of the sound insulating plate inserted into the insertion groove of the upper horizontal frame member is fixed to the upper horizontal frame member by a plurality of screws, while the lower horizontal frame member is inserted. The lower end portion of the sound insulating plate inserted into the groove is inserted and supported in the insertion groove without being fixed to the lower lateral frame member with a screw.

  According to a fourth aspect of the present invention, a mounting plate portion that refracts at right angles toward the outer side with respect to the frame plate portion protrudes from the rear end portion of the frame plate portion in the both side vertical frame members. The mounting plate portion is fixed to the column with bolts and nuts.

  According to the sound insulation panel of the present invention, in the sound insulation panel in which the four-way ends of the synthetic resin sound insulation plate are inserted and supported in the insertion grooves provided on the four inner peripheral surfaces of the rectangular frame, The base end portion of the pulling resistance piece that can be plastically deformed is fixed to both end portions, and the outer end portion of the pulling resistance piece is bent, and the bent portion is formed on the bottom side of the insertion groove. Since it is configured to be engaged with the engaging portion, an automobile or the like collides with the sound insulating plate, and the shock insulating plate is refracted and deformed into a V-shaped cross section by the impact force. When pulling out from the insertion grooves of the vertical frame members on both sides, the bent portions of the pull-out resistance pieces fixed to the both ends of the sound insulation plate engage with the engaging portions and the pulling direction in the engaging portions. Will be pulled out by plastic deformation while resisting The impact force cushioning absorbed to the resistance to the direction escape from it is possible to prevent the scattering cracked sound insulating plate.

  Furthermore, the both end portions of the sound insulation plate inserted and supported in the insertion grooves of the vertical frame members on both sides are not fixed to the vertical frame members on both sides by bolts, and as described above, together with the base ends of the pulling resistance pieces in the insertion grooves. In the case where the sound insulation plate is made of a resin plate having a large expansion and contraction rate due to heat like polycarbonate resin, both sides of the sound insulation plate are inserted in the insertion grooves of the vertical frame members on both sides. The end portion can be expanded and contracted in the groove width direction to prevent the sound insulating plate from being deformed in a wavy shape, and a good state of tensioning of the sound insulating plate can always be maintained.

  Further, according to the invention of claim 2, the vertical frame members on both sides are sound-insulating plates toward the inner side at the rear end portion of the vertically long rectangular frame plate portion having a constant width in the width direction in the front-rear direction. A sound insulation plate receiving plate portion having a fixed width for receiving the back surface of the side end portion of the frame plate is projected, and the front end facing portion of the vertical pressing edge is fixed to the front end portion of the frame plate portion. And an insertion groove for holding the side end portion of the sound insulation plate, to which the base end portion of the pullout resistance piece is fixed, between the opposing surfaces of the sound insulation plate receiving plate portion and the base end portion of the pullout resistance piece. , With the back of the both ends of the sound insulation plate to which the pulling resistor pieces are attached being received by the sound insulation plate receiving plate of the vertical frame material on both sides, the front of the both ends of this sound insulation plate is Both ends of the sound insulation plate are pressed by pressing them through packing etc., and the vertical pressing edges are fixed to the vertical frame members on both sides with rivets, respectively. It can be attached easily and accurately on both sides vertical frame member.

  In addition, a gap in which the bent portion of the pull-out resistance piece can be disposed between the opposing surfaces of the frame plate portion and the vertical pressing edge of the vertical frame members on both sides, and the outer surface of the vertical pressing edge facing this gap is formed. Since it is formed in the engaging part of the bending part of the drawing resistance piece, the drawing resistance piece can be attached to the sound insulation board only by fixing the vertical pressing edge in an arrangement state with a predetermined width interval from the inner side surface of the vertical frame member. A gap of a predetermined width capable of accommodating the pulling resistance piece between the opposing surfaces of the frame plate portion of the vertical frame member and the vertical pressing edge, despite the fact that it protrudes outward from both side ends, and the pulling resistance piece It is possible to easily form the engaging portion with which the bent portion engages.

  Further, according to the invention of claim 3, the upper end portion of the sound insulation plate inserted into the insertion groove of the upper horizontal frame member is fixed to the upper horizontal frame member by a plurality of screws, while the lower horizontal frame member The lower end of the sound insulation plate inserted into the insertion groove is inserted and supported in the insertion groove without being fixed to the lower horizontal frame member with screws, so that the sound insulation plate can be expanded and contracted in the vertical direction in the summer. In addition to preventing the wavy deformation as described above due to the temperature difference between the vehicle and the winter, etc., when a car or the like collides, the sound insulation board It is possible to reliably prevent the plurality of screws fixed to the upper lateral frame member from slipping out of the formed rectangular frame, and both ends at the upper ends where the sound insulating plate is fixed by the screws are used as fulcrums. Part and lower end on both side vertical frame material and lower horizontal frame material The sound insulation plate is moved in a direction escaping from the insertion groove can be reliably absorb the impact force while being bent and deformed in its cross-section V-shape that.

  Further, according to the invention of claim 4, for mounting, the rear end portion of the frame plate portion of the both-side vertical frame member of the rectangular frame is refracted at right angles toward the outer side with respect to the frame plate portion. Since the plate portion is provided so as to be fixed to the column with bolts and nuts, the mounting operation of the sound insulation panel to the column can be easily and efficiently performed from the road side. .

  Next, a specific embodiment of the present invention will be described with reference to the drawings. In FIG. 1, the sound insulation panel includes upper and lower horizontal frame members 1 and 2 and both vertical frame members 3 and 3 having a rectangular shape. The rectangular frame A is formed in combination with the rectangular frame A, and the rectangular sound insulating plate 4 is stretched on the rectangular frame A. The upper and lower horizontal frame members 1, 2 and the vertical frame members 3, 3 are made of aluminum. On the other hand, the sound insulating plate 4 is made of a resin plate having translucency and sound insulating properties such as polycarbonate and an acrylic resin plate and excellent in impact resistance. In addition, the sound insulation panel demonstrates the side facing the support | pillar B mentioned later as a back side.

  As shown in FIG. 2, the vertical frame members 3 and 3 on both sides of the rectangular frame A are formed in the same shape and the same structure, and are arranged so that the cross-sectional shape is symmetric. A small-sized mounting piece 3B is protruded at a right angle toward the inner side at the front end of the vertically long rectangular frame plate portion 3A having a constant width directed in the direction, and at the same time at a right angle toward the inner side at the rear end. In parallel with the mounting piece 3B, a wider sound insulating plate receiving plate portion 3C than the mounting piece 3B is projected, and further, the mounting piece 3B and the sound insulating plate receiving plate portion are provided on the back of the tip of the mounting piece 3B. The outer portion of the front surface of the vertical pressing edge 5 in the shape of a rectangular tube whose front and rear width is narrower than the distance between the opposing surfaces to 3C is overlapped over the entire length and fixed by a plurality of rivets 9, and the vertical pressing edge 5 When an insertion groove 6 having a constant width is formed between the back surface and the front surface of the sound insulating plate receiving plate portion 3C, the inner width is open. The one in which the vertical press bending portion 7a of the pull-out resistance piece 7 to be described later between the outer surface and the opposing surface of the frame plate portion 3A of the edge 5 is formed by forming a disposed possible gap 8.

  The vertical pushing edge 5 and the pulling resistance piece 7 are made of the same material as the rectangular frame A, that is, made of aluminum or an aluminum alloy, and the pulling resistance piece 7 is formed in a L-shaped cross section. 7 is divided into two pieces, and the base end portions thereof are superposed over the entire length of the sound insulation plate 4 over the entire length of the sound insulation plate 4 and fixed by rivets 9 'at predetermined intervals in the vertical direction. A bent portion 7a bent at a right angle with respect to the base end portion is protruded outward from the side end face of the sound insulating plate 4 and is disposed in the gap 8 with the bending direction directed forward. Further, the rear end corner portion on the outer side surface of the longitudinal pushing edge 5 facing the gap 8 is formed in the engaging portion 5a of the bent portion 7a of the pulling resistance piece 7. The engaging portion 5a is formed by a protruding piece projecting outward from the rear end corner of the vertical pushing edge 5, while being slightly forward of the rear end of the frame plate portion 3A. A holding piece 31 for receiving the rear surface of the pulling resistance piece 7 so as to reach a position close to the rear of the portion 5a, and the drawing resistance piece 7 is inserted into a narrow gap between the engaging portion 5a and the holding piece 31; The bending portion 7a is less likely to be deformed when the pulling resistance piece 7 is pulled out.

  In this way, the sound insulating plate 4 in which the base end portions of the pull-out resistance pieces 7 and 7 are fixed to both side end portions is the sound insulating plate receiving plate portion 3C of the both side vertical frame members 3 and 3 at the back of the both side end portions. The both ends are inserted into the insertion grooves 6 and 6 while being received on the front surface of the 3C, and the packing 10 is interposed between the front surfaces of these both end portions and the back surfaces of the vertical pressing edges 5 and 5. In this state, both end portions are sandwiched between the sound insulating plate receiving plate portion 3C and the vertical pushing edge 5. As described above, the drawing resistance piece 7 is made of a plastically deformable material such as aluminum or an aluminum alloy. The front surface of the sound insulation plate 4 is subjected to an impact force caused by a collision of an automobile and the both ends of the sound insulation plate 4 are inward from the insertion grooves 6 and 6 opposed to the vertical frame members 3 and 3 by the impact force. When the pulling-out resistance piece 7 is pulled out in the direction from the state in which the bent portion 7a is in contact with the engaging portion 5a, the impact is generated by plastically deforming inwardly along the engaging portion 5a. It is configured to absorb power.

  In contrast, the distal end of the bending portion 7a of the pull-out resistance piece 7 is further bent inward, and the both end portions of the sound insulating plate 4 are pulled out from the insertion groove 6 by the distal bending portion 7b. So as to exhibit a secondary resistance action.

  Also, a mounting plate portion 3D having a fixed width is formed at the rear end portion of the frame plate portion 3A in the vertical frame members 3 and 3 on both sides and refracted at right angles toward the outer side with respect to the frame plate portion 3A. ing. The back surface of the mounting plate portion 3D is continuous with the back surface of the sound insulation plate receiving plate portion 3C, which is refracted at right angles from the frame plate portion 3A toward the inside, and is flat in the width direction. A plurality of bolt mounting holes 11 are provided at predetermined intervals in the lengthwise direction in the central portion. Further, an outer frame plate portion 3E having the same width as the frame plate portion 3A is integrally provided at the outer end of the mounting plate portion 3D at a right angle toward the front, while the sound insulating plate receiving plate portion 3C A reinforcing frame plate portion 3F having a certain protruding width at a right angle toward the rear is projected at the inner end.

  As shown in FIG. 3, locking grooves 12 and 13 are formed over the entire length at the front ends of the frame plate portion 3A and the outer frame plate portion 3E. By attaching the locking projections 14a and 14b provided on both sides of the back surface of the cover 14 in a detachable manner, the mounting plate portion 3D, the frame plate portion 3A and the outer frame plate portion are covered by the cover 14. The space surrounded by 3E is closed, and the head of the bolt C fixing the vertical frame member 3 to the column B is concealed through the bolt mounting hole 11 of the mounting plate 3D. .

  On the other hand, in the upper and lower horizontal frame members 1 and 2 forming the rectangular frame A of the sound insulation panel together with the vertical frame members 3 and 3 on both sides, as shown in FIG. The upper horizontal frame member 1 is formed of a frame portion 1a having a U-shaped cross-section and a lower surface plate portion 1b provided with an insertion groove 6A into which the upper end portion of the sound insulating plate 4 is inserted. The side lateral frame member 2 is composed of a frame portion 2a having an upward U-shaped cross section and an upper surface plate portion 2b provided with an insertion groove 6B into which the lower end portion of the sound insulating plate 4 is inserted.

  Specifically, in the upper horizontal frame member 1, locking grooves 15a and 15b are provided at the lower ends of the front and rear wall surfaces of the frame portion 1a, and these locking grooves 15a and 15b are provided at the front and rear ends of the lower surface plate portion 1b. The locking protrusions 16a and 16b that are respectively locked to the protrusions project upward, and further open downward in the middle of the width direction of the lower surface plate portion 1b wider than the thickness of the sound insulating plate 4. The insertion groove 6A is recessed upward, and the upper end portion of the sound insulation plate 4 is inserted and fitted into the insertion groove 6A via the spacer member 17a, so that the insertion groove 6A and the sound insulation plate 4 are spaced at regular intervals in the left-right direction. The upper end of the sound insulating plate 4 is fixed to the insertion groove 6A by inserting the bolt 20 into the bolt mounting holes 18 and 19 provided for each.

  On the other hand, in the lower lateral frame member 2, locking grooves 21a and 21b are provided at the upper ends of the front and rear wall surfaces of the frame portion 2a, and these locking grooves 21a and 21b are provided at the front and rear ends of the upper surface plate portion 2b. The locking protrusions 22a and 22b that are respectively locked to the protrusions protrude downward, and further open upward in the middle of the width direction of the upper surface plate portion 2b wider than the thickness of the sound insulating plate 4. The insertion groove 6B is recessed downward, and the lower end portion of the sound insulating plate 4 is inserted and fitted into the insertion groove 6B via the spacer member 17b.

  In order to assemble the sound insulation panel by attaching the upper and lower horizontal frame members 1 and 2 and both vertical frame members 3 and 3 configured as described above to the four sides of the rectangular sound insulation plate 4 in a frame shape, The base end portions of the pull-out resistance pieces 7 and 7 are fixed to both side end portions of the front surface of the front surface 4 by rivets 9 '. First, the upper end portion of the sound insulating plate 4 in which the spacer member 17a is mounted in the insertion groove 6A provided in the lower surface plate portion 1b in a state where the lower surface plate portion 1b is removed from the frame portion 1a of the upper horizontal frame material 1. The sound insulating plate 4 is inserted and screwed into the bolt mounting holes 18 and 19 provided at the upper end portions of the insertion groove 6A and the sound insulating plate 4 between both side walls of the inserting groove 6A and screwed. The upper end is fixed to the insertion groove 6A. Thereafter, the lower surface plate portion 1b is attached to the lower end of the opening of the frame portion 1a by engaging the locking grooves 15a and 15b with the locking protrusions 16a and 16b.

  Further, the lower horizontal frame member 2 is inserted and supported via the spacer member 17b without the lower end portion of the sound insulating plate 4 being fixed to the insertion groove 6B of the lower horizontal frame member 2 with a bolt. The width of the sound insulating plate 4 is formed to be slightly wider than the length of the upper and lower horizontal frame members 1, 2, and therefore, both end portions of the sound insulating plate 4 to which the pulling resistance pieces 7, 7 are attached are the upper and lower horizontal frame members 1, 2 projecting outward from both end faces.

  In order to attach both side ends of the sound insulating plate 4 to the both side vertical frame members 3, 3, first, the back of the both side ends of the sound insulating plate 4 is attached to the both side vertical frame members 3, 3 without the vertical pushing edge 5 attached. After placing on the sound insulation plate receiving plate portions 3C, 3C of 3, the upper and lower ends of the reinforcing frame plate portion 3F of the vertical frame members 3, 3 are brought into contact with both side surfaces of the upper and lower horizontal frame materials 1, 2. Then, they are fixed together with screws.

  Next, the vertical pressing edge 5 is superposed on the base end portion of the pulling resistance piece 7 fixed to the front surface of both end portions of the sound insulating plate 4 and the packing 10 is placed between the vertical pressing edge 5 and the sound insulating plate 4. In this state, the vertical pressing edge 5 is fixed to the mounting piece 3B protruding inward from the front end of the frame plate portion 3A by the rivet 9. Then, an insertion groove 6 is formed in which the side end portion of the sound insulating plate 4 is inserted and supported between the opposing surfaces of the sound insulating plate receiving plate portion 3C and the vertical pressing edge 5, and the outer surface of the vertical pressing edge 5 and the above-mentioned A gap 8 is formed between the opposing surfaces of the frame plate portion 3A and the bending portion 7b of the drawing resistor piece 7 is disposed.

  In order to construct the sound insulation panel thus assembled, as shown in FIG. 2 between adjacent columns B, B in the columns B, B... The cover 14 is removed from the vertical frame members 3 and 3 on both sides, and the bolt mounting holes 11 provided in the mounting plate 3D are exposed to the outside. On the other hand, the flange portion b of the column B is provided with a bolt insertion hole D corresponding to each bolt mounting hole 11 provided in the mounting plate portion 3D, and on the back side of each bolt insertion hole D. A nut E is attached to the open end. The nut E is fixed to the tip end of the clip F that elastically sandwiches the flange portion b of the support column B. By attaching the clip F to the flange portion b, the nut E is attached to the opening end of the bolt insertion hole D. To be joined.

  Then, the mounting plate portions 3D and 3D of the vertical frame members 3 and 3 on both sides of the sound insulation panel are overlapped on the flange portions b and b of the adjacent columns B and B from the road side. A sound insulation panel is stretched between the columns B and B by inserting a bolt C into the insertion hole D and screwing it onto the nut E. Thereafter, the bolt heads are engaged by engaging the locking protrusions 14a, 14b of the cover 14 with the front end locking grooves 12, 13 of the frame plate portion 3A and the outer frame plate portion 3E of the vertical frame members 3, 3 on both sides. To hide.

  In this way, the sound insulation panel is stretched between the flanges b, b of the adjacent columns B and B, and the operation of fixing the sound insulation wall is sequentially performed so that a plurality of sound insulation panels are stacked in the length direction of the column B. To build.

  When the automobile collides with the sound insulation plate 4 of the sound insulation panel thus constructed, the sound insulation plate 4 is fixed by a bolt with a bolt 20 as a fulcrum at a portion fixed to the upper lateral frame 1 in the rectangular frame A by the impact force. The cross section V-shaped toward the outside of the road while the side ends and the bottom end not being pulled toward the direction of exiting the insertion grooves 6, 6, 6 B between the vertical frame members 3, 3 and the lower horizontal frame member 2. Bends and deforms.

  At this time, when the both end portions of the sound insulating plate 4 are pulled out inwardly from the opposing insertion grooves 6 and 6 of the both side vertical frame members 3 and 3 by the impact force, the bent portions 7a of the pullout resistance piece 7 are formed. FIG. 5 shows that the bent portion 7a is brought into contact with and engaged with the engaging portion 5a formed by the rear end corner portion on the outer side surface of the vertical pushing edge 5 and further along the engaging portion 5a by the force acting in the pulling direction. As shown in the figure, it is plastically deformed so as to be stretched, and the impact force is absorbed and buffered by the engaging force with respect to the engaging portion 5a and the plastic deformation of the bent portion 7a, and is further folded back at the tip of the bent portion 7a. The impact insulation force is secondarily absorbed and relaxed by the resistance force caused by plastic deformation of the bent end portion 7b, and the sound insulating plate 4 suddenly comes out of the insertion grooves 6 and 6 of the vertical frame members 3 and 3 or cracks. This is to prevent this from happening.

  In the above embodiment, the tip bent portion 7b is formed by folding the tip of the bent portion 7a of the pull-out resistance piece 7, but such a tip bent portion 7b is provided as shown in FIG. The pulling resistor piece 7A formed by simply bending the cross section into an L shape may be employed, or as shown in FIG. 7, the end of the bent portion 7a is bent outward at a right angle to form a vertical frame member. 3 may be formed at the bent end portion 7c that is plastically deformed while abutting against the holding piece 31 or the engaging portion 5a protruding from the inner surface of the rear end portion of the frame plate portion 3A. In any case, the thickness of the drawing resistor piece 7 may be formed to be about 2 to 3 mm so as to be plastically deformable.

  Further, in the above embodiment, the bent portion 7a of the pull-out resistance piece 7 protrudes outward from the side end portion of the sound insulating plate 4 and the engaging portion 5a is rearward on the outer surface of the vertical pushing edge 5. Although it is formed by a projecting piece projecting outward from the end corner, the present invention is not limited to such a configuration. For example, as shown in FIG. The bent portion 7a of the pull-out resistor piece 7 fixed to the front surface is bent toward the front before reaching the side end surface of the sound insulating plate 4 without protruding outward from the side end portion of the sound insulating plate 4, and The engaging portion 5a with which the bent portion 7a is engaged may be formed by the rear end corner portion on the outer side surface of the vertical pushing edge 5.

The simplified perspective view of the state which looked at the sound insulation panel from the front side. The cross-sectional view which abbreviate | omitted a part of the state attached between support | pillars. FIG. The center vertical side view which abbreviate | omitted the intermediate part of the sound insulation panel. FIG. 4 is a partial enlarged cross-sectional view showing plastic deformation of the drawing resistance piece when an impact force is applied to the sound insulating plate. The partially expanded cross-sectional view of the vertical frame material which mounted | worn the extraction resistance piece of another shape. Furthermore, the partially expanded cross-sectional view of the vertical frame material which mounted | worn the extraction resistance piece of another shape. The partially expanded cross-sectional view which shows the modification of the attachment form of the drawing resistance piece with respect to a sound insulating board.

Explanation of symbols

A rectangular frame B struts 1, 2, upper and lower horizontal frame materials 3, 3 vertical frame materials on both sides 4 sound insulation plate 5 vertical pushing edge 6 insertion groove 7 drawing resistance piece
7b Bend

Claims (4)

  Upper and lower horizontal frame members provided on the upper and lower opposing surfaces for receiving the upper and lower ends of the synthetic resin sound insulating plate, and both vertical frame members provided on the left and right opposing surfaces for receiving the both end portions of the sound insulating plate. In the sound insulation panel in which the four ends of the sound insulation plate are inserted and supported in the upper, lower, left and right insertion grooves of the rectangular frame, the two sides of the sound insulation plate can be plastically deformed. A base end portion of the pull-out resistance piece is fixed and an outer end portion of the pull-out resistance piece is bent, and the bent portion is engaged with an engagement portion formed on the bottom side of the insertion groove. The sound insulation panel is characterized by being configured to generate pull-out resistance.   The vertical frame members on both sides have a fixed width for receiving the rear surface of the side end portion of the sound insulating plate toward the inner side at the rear end portion of the vertically long rectangular frame plate portion having a fixed width with the width direction directed in the front-rear direction. A sound insulating plate receiving plate portion is projected, and a front end facing portion of the vertical pressing edge is fixed to the front end portion side of the frame plate portion so that the vertical pressing edge and the sound insulating plate receiving plate portion are opposed to each other. An insertion groove is formed that sandwiches the side end portion of the sound insulation plate to which the base end portion of the pulling resistance piece is fixed together with the base end portion of the pulling resistance piece, and further, the frame plate portion and the vertical pressing edge A gap in which the bent portion of the pulling resistance piece can be disposed between the opposing surfaces, and the outer surface of the vertical pressing edge facing the gap is formed in the engaging portion of the bending portion of the pulling resistance piece. The sound insulation panel according to claim 1.   The upper end of the sound insulation plate inserted into the insertion groove of the upper horizontal frame member is fixed to the upper horizontal frame member by a plurality of screws, while the lower end portion of the sound insulation plate inserted into the insertion groove of the lower horizontal frame member is lowered. The sound insulation panel according to claim 1, wherein the sound insulation panel is inserted and supported in the insertion groove without being fixed to the side lateral frame member by a screw. At the rear end of the frame plate part in the vertical frame members on both sides, a mounting plate part that refracts at right angles toward the outside with respect to the frame plate part is projected, and this mounting plate part is used as a column. 4. The sound insulation panel according to claim 1, wherein the sound insulation panel is configured to be fixed by bolts and nuts.

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