JP2015194170A - Metal bracket of wall panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal bracket of a wall panel that can be mounted easily, can acquire sufficient spring reaction force when mounted, causes little stress concentration in a contact part between the wall panel or a support pillar and the inner surface of a fitting groove, and is free from a risk of coming-off.SOLUTION: An end part of a sound insulation plate 31 is inserted into a fitting groove 25 formed on the side face of a support pillar 21, and the sound insulation plate 31 is fixed to the support pillar 21 by spring reaction force of a metal bracket 1. The metal bracket 1 includes a first vertical side part 2 that contacts the reverse face of the sound insulation plate 31, and a second vertical side part 3 that extends continuously from the lower part of the first vertical side part 2 obliquely upward. An intermediate part of the second vertical side part 3 is provided with an inwardly curved part 5. When the metal bracket 1 is mounted, an apex of the inwardly curved part 5 makes spring deformation in a direction that the curvature of the apex increases, and, at the same time, upper and lower bent parts 6 and 7 of the inwardly curved part 5 makes spring deformation in a direction that they extend so that large spring resilience can be acquired. At the time of mounting the metal blacket 1, the support pillar 21 is brought in contact with two locations: the vicinity of the lower bend part 6 located at a lower part of the inwardly curved part 5, and the upper part of the upper bend part 7 located at the upper part of the inwardly curved part 5.

Description

  The present invention relates to a fixing member for a wall panel, and is mainly used for fixing a sound insulating plate of a sound insulating wall provided on a road or the like.

  As one of the standard types of sound insulation walls for roads, both ends of panels made of metal panels incorporating sound insulation materials between pillars made of H-shaped steel, concrete panels, polycarbonate translucent plates with metal frames, etc. Is inserted into a groove between the flanges of the column, and a plate spring type fixing bracket made of stainless steel for springs is fitted and fixed between one side of the panel and the inner surface of one of the flanges.

  Regarding the above-mentioned type of fixing bracket, for example, in Non-Patent Document 1, the size of the gap of 12 mm to 127 mm is provided on the condition that it effectively acts on the gap considering the dimensional tolerance between the H-shaped steel column and the sound insulating plate. A diagram of the standard fixture is shown.

  In the standard design of the sound insulation wall with a small wall thickness, for example, an SS-shaped H-shaped steel made of SS400 having an outer dimension of 125 mm × 125 mm × web thickness of 6.5 mm × flange thickness of 9 mm is used, width 3960 mm × height 500 to 600 mm, plate A sound insulating plate made of metal, concrete, or synthetic resin having a thickness of 90 to 95 mm is elastically fixed by a leaf spring type fixing bracket of a narrow width type when viewed from the side.

  As such a narrow-width type leaf spring type fixing bracket, as described in, for example, Patent Document 1, an arc is formed from the first vertical side portion contacting the back surface of the wall panel (sound insulating plate) and the lower portion thereof. A basic shape in which the second vertical side portion that is folded back and extends obliquely upward forms a V shape has been known for a long time.

  However, since the leaf spring type fixing bracket in such a state that spreads in a V shape is mounted between the groove between the flange of the support column and the wall panel, there is a problem of noise due to metal sound when it is struck with a tool. .

  Therefore, when mounting in the gap, it is compressed in advance, and the engagement means fixes the gap between the first vertical side portion and the second vertical side portion to be equal to or smaller than the gap interval, or in that state. Various devices have been developed in which the engagement means is released after being attached to the device.

  For example, Patent Document 2 describes an engagement means using a screw, and Patent Document 3 discloses a bent piece obtained by folding a hooking tongue piece cut and raised from the first vertical side portion from the upper portion of the second vertical side portion. The hook is configured to be engaged with the hooking tongue receiving port formed in the above.

  In addition, Patent Document 4 discloses a direction in which the first vertical side portion and the second vertical side portion that form a V shape warp each other with a predetermined curvature so as to increase the spring reaction force of the fixture made of a leaf spring material. Are curved.

Japanese Utility Model Publication No. 56-019606 Japanese Patent Laid-Open No. 10-245821 JP 2001-066553 A Japanese Patent No. 4452771

“Soundproof wall standard design drawings”, East Japan Expressway Co., Ltd., Central Japan Expressway Co., Ltd., West Japan Expressway Co., Ltd., July 2009 2nd edition

  In the case of a narrow type leaf spring type fixing bracket, it is difficult to obtain a necessary spring reaction force in a narrow dimension while providing an engaging means so as not to generate noise. The first vertical side portion and the second vertical side portion that form a V shape are curved in directions opposite to each other with a predetermined curvature, so that the elasticity of the entire first vertical side portion and the second vertical side portion is obtained. It is intended to increase the amount of deformation and increase the elastic restoring force as a fixture.

  However, since the first vertical side portion and the second vertical side portion are curved in directions opposite to each other, the contact portion between the first vertical side portion and the wall panel is also in contact with the second vertical side portion and the groove inner surface. The contact portion is also limited to a narrow range, and stress concentrates on that portion. In particular, there is a problem of deformation of the wall panel at the stress concentration portion on the contact side between the first vertical side and the wall panel.

  The present invention is intended to solve the above-described problems in the prior art, and it is easy to mount a thin-type leaf spring type fixing bracket, and a sufficient spring reaction force can be obtained during mounting. An object of the present invention is to provide a fixing member for a wall panel that has a low stress concentration at a contact portion with the inner surface of a fitting groove of a wall panel or a support column, and does not have a fear of coming out.

  The wall panel fixing bracket of the present invention inserts an end portion of the wall panel into a fitting groove extending in the vertical direction formed on the side surface of the column, and is inserted between the back surface of the wall panel and the inner surface of the fitting groove. A wall panel fixing bracket made of a leaf spring material for fixing the wall panel to the column by a spring reaction force, and a first vertical side portion that contacts the back surface of the wall panel; A second vertical side portion that is folded back in an arc from the lower portion of the first vertical side portion and extends obliquely upward, and a top portion is bent vertically at an intermediate portion in the vertical direction of the second vertical side portion. An inwardly curved portion that protrudes toward the first vertical side portion side is provided, and the second vertical side portion is provided when the fixing bracket is mounted between the back surface of the wall panel and the inner surface of the fitting groove. Is elastically in close contact with the inner surface of the fitting groove.

  A direction in which the curvature of the apex of the inwardly curved portion increases when the apex of the inwardly curved portion is curved in an arc shape so as to be compressed in the direction of narrowing the upper interval between the first vertical side and the second vertical side. It is possible to obtain a spring reaction force (restoring force) corresponding to the spring deformation. At the same time, by performing spring deformation in the direction in which the upper and lower bent portions of the inwardly curved portion spread, a spring reaction force (restoring force) corresponding to the upper and lower bent portions can be obtained. Therefore, a large spring reaction force (restoring force) can be obtained as a whole as compared with the conventional simple V-shaped fixture.

  Further, the first vertical side portion may be formed in a flat shape without being curved, and stress concentration can be suppressed by causing almost the entire surface of the first vertical side portion to contact the back surface of the wall panel. The deformation of the wall panel can be suppressed.

  That is, in the case of the fixing bracket described in Patent Document 4 described above, the first vertical side portion and the second vertical side portion are curved in directions that warp each other, so that the first vertical side portion and the wall panel abutment portion. Is limited to a very limited range above and below the first vertical side, and stress is concentrated on that portion. Therefore, the wall panel is strongly pressed at the abutting portion, and there is a risk that the wall panel is deformed or partially damaged. On the other hand, in the case of the fixing metal fitting according to the present invention, as described above, since almost the entire surface of the first vertical side is in contact with the surface on the wall panel side, deformation of the wall panel can be suppressed.

  A plurality of wall panels are usually installed in the vertical direction, and the same is true for conventional fixtures, but a horizontal piece extending from the top of the first vertical side of the fixture in the opposite direction to the second vertical side. And the horizontal piece can be installed in such a manner as to be sandwiched between the upper and lower sound insulation plates.

  In particular, if the second vertical side portion is designed by adjusting the curvature of the inwardly curved portion, the angle of the upper and lower bent portions thereof, or the dimensional relationship such as the other straight portion, the fixing bracket is attached to the rear surface of the wall panel. The second vertical side portion is elastically abutted against and in close contact with the inner surface of the fitting groove at two locations above and below the inwardly curved portion when mounted between the inner groove and the inner surface of the fitting groove. Can do.

  By dividing the contact portion into two upper and lower portions, it is possible to disperse the spring reaction force on the inner surface of the fitting groove of the support column, so that a stable fixing state is obtained and the fixing bracket is difficult to come out. It should be noted that two or more inwardly curved portions may be provided on the upper and lower sides, and further the spring reaction force can be distributed.

  Also in the wall panel fixing bracket of the present invention, when the first vertical side portion and the second vertical side portion are compressed in the direction of narrowing the upper interval, the engagement means for holding the interval is provided, And the problem of noise during installation can be eliminated. The form of the engaging means is not particularly limited, and for example, any method described in Patent Documents 2 to 4 described above can be used.

  When the fixing bracket is mounted in the gap, the first vertical side and the second vertical side are crushed in a direction in which the distance between the upper parts is reduced against the restoring force as a leaf spring, and the first and second vertical sides are pressed by the engagement of the engaging means. Push into the gap from above or from the side with the crushed shape.

  The engagement part of the fixture is inserted into the gap, and then operated by putting a tool such as a screwdriver into the gap from above or from the side to release the engagement, so that the elastic reaction force as a leaf spring of the fixture itself Thus, the first vertical side can press the back surface of the wall panel, and the second vertical side can press the flange inner surface of the support column, so that the wall panel can be elastically fixed.

  The wall panel fixing bracket of the present invention uses a spring deformation of an inwardly curved portion provided in the vertical middle portion of the second vertical side portion and its upper and lower bent portions, and is a narrow-type leaf spring A large spring reaction force can be obtained even in the type fixing bracket, and a stable fixing state can be obtained.

  About the 1st vertical side part, what is necessary is just to form in the shape of a plane without curving. By making almost the whole surface of the 1st vertical side part contact the back of the wall panel, concentration of stress is suppressed, Deformation of the wall panel can be suppressed.

  When the fixing bracket is mounted between the back surface of the wall panel and the inner surface of the fitting groove, the second vertical side portion elastically contacts the inner surface of the fitting groove at two locations above and below the inwardly curved portion. If they are in close contact with each other, the spring reaction force can be dispersed, and a more stable fixed state can be obtained.

FIG. 2 shows a use state in an embodiment when the present invention is applied to a fixing member for a sound insulation wall, (a) is a sectional view in a direction orthogonal to the wall continuous direction, and (b) is an enlarged view of a portion A thereof. is there. FIG. 1 shows details of the fixing bracket in the embodiment of FIG. 1, and (a) is a left side view (a solid line indicates a compressed state, a two-dot chain line indicates a spread state, a one-dot chain line indicates a mounted state), ( (b) is a front view, (c) is a BB cross-sectional view of (a). FIG. 4 shows another embodiment of the fixing bracket, wherein (a) is a left side view in an expanded state, (b) is a front view, (c) is a plan view, and (d) is an engagement groove portion (a). It is the figure seen from the arrow C direction of).

  Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a use state of a fixing bracket 1 in an embodiment when the present invention is applied to a fixing bracket for a sound insulation wall. In a fitting groove 25 formed on a side surface of a column 21 made of H-shaped steel, With the end portion of the sound insulating plate 31 as a wall panel inserted and with one surface of the sound insulating plate 31 pressed against the inner surface of one flange 23 of the column 21, the other surface of the sound insulating plate 31 and the other of the column 21 The fixing bracket 1 is inserted between the inner surface of the flange 24 and the sound insulating plate 31 is fixed to the support column 21 by the spring reaction force of the fixing bracket 1.

  The struts 21 are installed along the road at intervals of 2 m or 4 m, and between the web 22 and the flanges 23 and 24 at both ends, fitting grooves 25 that are open on both sides are formed, and sound insulation is provided between adjacent struts 21. A plate 31 is provided in the vertical direction.

  FIG. 2 shows details of the fixture 1 in the embodiment of FIG. 1. In FIG. 2 (a) when the fixture 1 is viewed from the side, the compressed state is shown by a solid line, and no spring reaction force acts. A spread state is indicated by a two-dot chain line, and a state where the sound insulating plate 31 is attached and elastically fixed is indicated by a one-dot chain line.

  The fixing metal fitting 1 of this embodiment is formed by bending stainless steel for springs having a thickness of about 1.5 mm by bending or the like, and includes a first vertical side portion 2 that comes into contact with the back surface of the sound insulating plate 31 and a first vertical length. A second vertical side portion 3 that is folded back in an arc from the lower portion of the side portion 2 and extends obliquely upward, and is bent at the middle in the vertical direction of the second vertical side portion 3 so that the top portion is a first vertical portion. When the inwardly curved portion 5 is provided so as to protrude toward the side portion 2, and the fixing bracket 1 is mounted between the back surface of the sound insulating plate 31 and the inner surface of the fitting groove 25, the second vertical side portion 3 is The inner surface of the fitting groove 21 is elastically adhered (see FIG. 1).

  In the figure, reference numeral 4 denotes a lower end folded part extending from the first vertical side part 2 to the second vertical side part 3, reference numeral 6 denotes a lower bent part of the inward bending part 5, and reference numeral 7 denotes an inward bending part 5. The upper bent part is shown.

  In the present embodiment, a horizontal piece 11 extending in the direction opposite to the second vertical side portion 3 is provided at the upper end portion of the first vertical side portion 2 of the fixing bracket 1. It is installed so as to be sandwiched between the upper and lower sound insulation plates 31. A mounting hole 12 is formed in the central portion of the horizontal piece 11 for mounting with a bolt or the like, or for passing a wire.

  In the fixing bracket 1 according to the present invention, when the top of the inwardly curved portion 5 is curved in an arc shape, when the first vertical side portion 2 and the second vertical side portion 3 are compressed in the direction of narrowing the upper interval, The spring is deformed in the direction in which the curvature of the apex of the inwardly curved portion 5 is increased, and a spring reaction force (restoring force) can be obtained accordingly. At the same time, the spring reaction force (restoring force) corresponding to the upper and lower bent portions 6 and 7 can be obtained by the spring deformation in the direction in which the upper and lower bent portions 6 and 7 of the inwardly curved portion spread.

  Further, in the present embodiment, when the fixing bracket 1 is mounted between the back surface of the sound insulating plate 31 and the inner surface of the fitting groove 25, the second vertical side portion 3 is located above and below the inwardly curved portion 5. It is set as the dimension which contact | abuts and contacts the inner surface of a fitting groove elastically in two places. That is, in this example, as shown in FIG. 1 (b), it is configured to abut at the two locations above the lower bent portion 6 and above the upper bent portion 7.

  By dividing the abutment portion into two upper and lower portions, it is possible to disperse the spring reaction force on the flange 24 side of the support column 21, thereby obtaining a stable fixed state and obtaining the effect that the fixture 1 is not easily pulled out.

  An upper end folded portion 8 is formed at the upper end portion of the second vertical side portion 3, and an engaging groove 9 that is notched in a groove shape is formed at a tip portion located below the upper end folded portion 8. A locking piece 10 whose tip extends in the lateral direction is provided at the upper part of the first vertical side 2 at a position facing the engaging groove 9. By engaging with the engaging groove 9, it can be easily inserted into the fitting groove 25.

  After that, by releasing the engagement in the fitting groove 25, the first vertical side portion 2 makes the back surface of the sound insulating plate 31 the second vertical side portion 3 by the elastic reaction force as the plate spring of the fixture 1 itself. Can press the inner surface of the flange 24 of the support column 21 to elastically fix the sound insulating plate 31.

  The locking piece 10 in this embodiment is formed by cutting the upper end portion of the first vertical side portion 2 and bending the base portion, and the engagement state shown in FIGS. 2 (a) and 2 (b). After the fixing bracket 1 is inserted into the fitting groove 25, when the locking piece 10 is pushed downward with the tip of a screwdriver or the like, the locking piece 10 is released from the engagement groove 9, and is engaged by the spring restoring force of the fixing bracket 1. The state is released. In the present invention, the engaging means is not particularly limited, and other types of engaging means may be used.

  FIG. 3 shows another embodiment of the fixing bracket. The main difference from the embodiment of FIG. 1 and FIG. 2 is that bead processing is performed on a part of the first vertical side portion 2 to bead. The bending rigidity of the first vertical side portion 2 is increased at 13 portions.

  For the locking piece 10 that engages with the engagement groove 9 on the second vertical side 3 side, a large notch is provided at the upper end of the first vertical side 2 and the locking piece 10 is inclined downward. I cut it up. On the other hand, when the window portion 14 is cut out at the position of the upper end turn-up portion 8 on the second vertical side portion 3 side and the locking piece 10 is removed from the engagement groove 9 in the engaged state, the tip of the tool is placed in the window portion 14. The engagement can be easily released by operating through.

  Other basic functions are substantially the same as those of the embodiment of FIGS.

  As mentioned above, although the embodiment at the time of applying the present invention to the fixture of a sound insulation wall was described, the present invention is not limited to these embodiments.

DESCRIPTION OF SYMBOLS 1, 1 '... Fixing metal fitting, 2 ... 1st vertical side part, 3 ... 2nd vertical side part, 4 ... Lower end folding | turning part, 5 ... Inward bending part, 6 ... Bending part (lower side), 7 ... Bending part (Upper side), 8 ... upper end folding portion, 9 ... engaging groove, 10 ... locking piece, 11 ... side piece, 12 ... mounting hole, 13 ... bead, 14 ... window portion,
21 ... H-shaped steel column, 22 ... Web, 23 ... Flange, 24 ... Flange, 25 ... Fitting groove,
31 ... Sound insulation board

The wall panel fixing metal fitting according to the present invention inserts an end of a wall panel into a fitting groove extending in a vertical direction formed on a side surface of a column made of H-shaped steel , and the back surface of the wall panel and the inner surface of the fitting groove. by inserting to be mounted between, a wall panel fixing bracket made of leaf spring material for resiliently fixing the wall panels to the post by a spring reactive force, substantially on the rear surface of the wall panel A first vertical side portion whose entire surface is in contact with the surface, and a second vertical side portion that is folded back in an arc from the lower portion of the first vertical side portion and extends obliquely upward, and An inwardly curved portion is provided at the middle portion of the direction so that the top portion is bent at the top and the top portion protrudes toward the first vertical side portion, and the first vertical side portion and the second vertical side portion of the fixing bracket are provided. When mounted in the gap between the back surface of the wall panel and the inner surface of the fitting groove, the second vertical side portion is inwardly facing. It is characterized in that it is elastically adhered to the inner surface of the fitting groove above and below the curved portion .

When the fixing bracket is mounted between the back surface of the wall panel and the inner surface of the fitting groove, the second vertical side portion elastically contacts the inner surface of the fitting groove at two locations above and below the inwardly curved portion. in to Rukoto to contact adhesion, dispersion of the spring reaction force can be achieved, it is possible to obtain a more stable fixed state.

Claims (4)

  Inserting the end of the wall panel into the fitting groove extending in the vertical direction formed on the side surface of the column and inserting it between the back surface of the wall panel and the inner surface of the fitting groove, the spring reaction A wall panel fixing bracket made of a leaf spring material for elastically fixing the wall panel to the support column by force, a first vertical side portion contacting the back surface of the wall panel, and the first vertical side portion A second vertical side portion that is folded back in an arc from the lower portion of the first vertical side portion and extends obliquely upward, and a top portion of the second vertical side portion is bent vertically so that a top portion is the first vertical side portion. An inwardly curved portion that protrudes to the side, and when the fixture is mounted between the back surface of the wall panel and the inner surface of the fitting groove, the second vertical side portion of the fitting groove A wall panel fixing bracket characterized by being elastically adhered to the inner surface.   The wall panel fixture according to claim 1, wherein a top portion of the inwardly curved portion is curved in an arc shape and is compressed in a direction of narrowing an upper interval between the first vertical side portion and the second vertical side portion. A wall panel fixing bracket, wherein the wall panel fixing bracket is configured to be spring-deformed in a direction in which a curvature of a top portion of the inwardly curved portion is increased and to bend in a direction in which upper and lower bent portions of the inwardly curved portion are widened.   The wall panel fixture according to claim 1 or 2, wherein when the fixture is mounted between the back surface of the wall panel and the inner surface of the fitting groove, the second vertical side portion is the inwardly curved portion. A wall panel fixing bracket characterized in that it is elastically adhered to the inner surface of the fitting groove above and below.   4. The wall panel fixture according to claim 1, 2, or 3, wherein when the first vertical side portion and the second vertical side portion are compressed in the direction of narrowing the upper interval, the engagement means is used to maintain the interval. A wall panel fixing bracket characterized by comprising:

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