JP5587851B2 - Wall panel fixing bracket - Google Patents

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 a panel made of a metal panel incorporating a sound insulation material or a polycarbonate translucent plate equipped with a metal frame between columns made of H-shaped steel There are some which are inserted into a groove between the flanges and fixed by inserting a plate spring type fixing metal fitting which gives a spring reaction force between one side of the panel and the inner surface of one of the flanges.

  In that case, a plurality of sound insulation plates are installed in the vertical direction, and the fixing bracket is often installed in such a manner that a horizontal piece extending to the side of the fixing bracket is sandwiched between the upper and lower noise insulation plates.

  Regarding the above-mentioned type of fixing bracket, in Non-Patent Document 1, Non-Patent Document 2, etc., 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, 12 mm to A diagram of a standard fixture according to the size of the 127 mm gap is shown.

  Moreover, as this type of fixing metal fitting, there exist some which were described in patent documents 1-3, for example. A common basic form of these fixing brackets is that when mounted in a gap, the first vertical side portion that contacts the sound insulating plate side and the lower portion of the first vertical side portion extend obliquely upward, and the upper end. The first vertical side portion of which the portion comes into contact with the inner surface of the flange of the support column, and an angled inner folded portion that is folded back at the upper end portion of the second vertical side portion. It is elastically deformed when attached to the gap between the sound insulation plate and the flange of the pillar, depending on the design, with the crest of the crest of the crest being in contact with the inner surface of the first vertical side. It has a structure that gives a spring reaction force.

  Among these, the invention described in Patent Document 1 is characterized in that a retaining protrusion is provided on the second vertical side, and the retaining protrusion is caught on the flange inner surface of the support column to prevent the fixing bracket from coming out. It has become.

Japanese Patent No. 40614485 Japanese Utility Model Publication No. 04-057513 Japanese Patent Laid-Open No. 10-280335

“Soundproof wall standard design drawings”, Japan Highway Public Corporation, December 1999 “Soundproof wall standard design drawings”, East Japan Expressway Co., Ltd., Central Japan Expressway Co., Ltd., West Japan Expressway Co., Ltd., July 2009 2nd edition

  As described above, in the invention described in Patent Document 1, the retaining protrusion provided on the second vertical side portion is caught on the inner surface of the groove of the support column to prevent the fixing bracket from coming out.

  Further, in Patent Document 1, although the form of the retaining protrusion is not particularly limited, it is not practical to attach the protrusion separately in production in terms of securing the cost and the effect of catching. A part of the second vertical side as shown as an example in Patent Document 1 must be cut and raised toward the upper outside, and cut into Non-Patent Document 2 as well. An arrangement with raised protrusions is shown.

  However, if the amount of protrusion caused by cutting and raising is small, the pulling resistance due to being caught on the inner surface of the groove of the column (the inner surface of the flange of the H-shaped steel) cannot be obtained sufficiently.

  In addition, when the protruding amount is increased, the tip of the cut and raised portion receives a large reaction force from the support column, and the cut and raised portion is easily elastically deformed by the reaction force concentrated on the tip of the cut and raised portion. Therefore, sufficient pulling resistance cannot always be given in relation to the spring function of the fixture itself.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems in the prior art, and provides a wall panel fixing bracket that is easy to manufacture, is inexpensive, and can maintain a stable mounting state during mounting. The purpose is that.

  The wall panel fixing bracket of the present invention has an end portion of the wall panel inserted into a fitting groove extending in the vertical direction formed on the side surface of the support column, and fitted between one side of the wall panel and the inner surface of the fitting groove. It is a fixing bracket for fixing the wall panel to the column by the spring reaction force by mounting.

  As a structure of the fixing bracket, a first vertical side portion that comes into contact with one side of the wall panel, a second vertical side portion that extends obliquely upward continuously from a lower portion of the first vertical side portion, and a second vertical side portion. And an arcuate portion whose cross section perpendicular to the width direction is convex on the opposite side of the panel in a predetermined range at least at the upper portion of the second vertical side portion. Is formed.

  In the fixing bracket of the present invention, the arc-shaped portion abuts the inner surface of the fitting groove at the time of mounting, and the surface of the arc-shaped portion has a plurality of cut-out preventing grooves extending in the width direction of the second vertical side portion. It is characterized in that it is provided.

  The arcuate portion may be formed by gently bending a part or the whole of the second vertical side portion. This arc-shaped part is not bent too much, and the curvature is made as small as possible (the radius of curvature is increased) to make it a smooth arc. It is possible to make contact with a wide range.

  By providing a plurality of notched grooves in a range where this contact is assumed, it is possible to increase the pull-out resistance and prevent the fixture from coming off.

  The depth of the notch groove varies depending on the material, the length of the notch groove, the arrangement, and the like, but is preferably about 1/5 to 1/2 of the plate thickness of the second vertical side portion. For example, as an example of a steel fixture for fixing a sound insulation plate for a sound insulation wall, a design is made such that a notch groove having a depth of 0.5 mm is provided for a plate thickness of 1.5 mm, for example.

  If the depth of the notch groove is too shallow, it is difficult to obtain a sufficient pulling resistance, and if it is too deep, there is a possibility that the strength of the second vertical side portion will be reduced, and processing will be troublesome.

  As a means for increasing the pulling resistance with the same notch groove depth, the notch angle on the lower side of the groove on the surface of the second vertical side is smaller than the notch angle on the upper side of the groove. What should I do? For example, it is conceivable that the notch angle below the notch groove is 90 ° or less with respect to the surface of the second vertical side portion.

  In the present invention, when the fixing bracket is mounted, the arc-shaped portion of the second vertical side portion is in contact with the inner surface of the fitting groove of the support column, and the portion, that is, the contact portion of the arc-shaped portion is prevented from coming off. Since the notch groove is formed, a very stable mounting state can be maintained.

  That is, in the structure shown in Patent Document 1 or Non-Patent Document 2, the top of the second vertical side portion is in contact with the inner surface of the fitting groove of the support column and gives an elastic reaction force when mounted. If there is vibration in the case, there is a risk that it will come out upward, and it will be suppressed by catching the tip of the protruding part by cutting and raising provided near the center of the second vertical side in the height direction. They are in a relationship that suppresses the functions of each other.

  On the other hand, in the present invention, since the position where the elastic reaction force is applied as the leaf spring type fixing bracket and the position of preventing the pull-out coincide with each other in the arcuate portion, it is possible to obtain a high pulling resistance force while maintaining the elastic reaction force. it can.

  In addition, in order to form the protruding portion by cutting and raising, it is necessary to work to cut into a U-shape, and the problem of the strength reduction of the second vertical side portion due to cutting and raising occurs. The bending process of the arc-shaped part and the cutting process of the notch groove with a slight depth can be extremely easily performed, and the second longitudinal side part is not substantially reduced in strength.

1 shows an embodiment in which the present invention is applied to a fixing member for a sound insulation wall, where (a) is a left side view, (b) is an enlarged cross-sectional view of the main part thereof, and (c) is a right side view. FIGS. 1A and 1B show a usage state of a fixing metal fitting in the embodiment of FIG. 1, wherein FIG. 1A is a vertical sectional view and FIG. 1B is a horizontal sectional view. FIG. 3 shows another embodiment in which the present invention is applied to a fixing member for a sound insulation wall, where (a) is a left side view, (b) is an enlarged cross-sectional view thereof, and (c) is a right side view. .

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

  FIG. 1 shows an embodiment in which the present invention is applied to a fixing bracket for a sound insulation wall. The fixing bracket 1 is a fitting formed on a side surface of an H-shaped steel column 21 as shown in FIG. In the state where the end of the sound insulating plate 31 is inserted into the groove 25 and one surface of the sound insulating plate 31 is pressed against the inner surface of one flange 23 of the H-shaped steel column 21, the other surface of the sound insulating plate 31 The sound insulation plate 31 is fixed to the H-shaped steel column 21 by a spring reaction force of the fixing bracket 1 by being pushed by pushing with a hammer or the like between one flange 24 of the H-shaped steel column 21.

  The H-shaped steel columns 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 adjacent H-shaped. A sound insulating plate 31 is provided between the steel columns 21 in the vertical direction.

  In addition, as a form of a relatively general sound insulation wall, a concrete plate is installed on the lower stage, and a plurality of metal sound insulation boards 31 incorporating a sound insulation material such as glass wool are installed thereon and bent on the roof. There is a structure in which a translucent panel having a metal frame on the top is attached. In addition, a surface material is often attached.

  More specifically, the fixture 1 of the present embodiment is obtained by processing a stainless steel strip having a thickness of about 1.5 mm by bending or the like, and is attached to the upper surface of the sound insulating plate 31 as shown in FIG. The first vertical side 2 hangs down from the end of the horizontal piece 8, the second vertical side 3 rises obliquely upward via the lower side 7, and is folded back at the upper end of the second vertical side 3. A mountain-shaped inner folded portion 4 that enters between the vertical side portion 2 is formed.

  A fitting hole 9 is formed in the central portion of the horizontal piece portion 8 and can be fitted to a convex portion (not shown) formed on the upper surface of the sound insulating plate 31. The first vertical side portion 2 hangs along one side of the sound insulating plate 31.

  In the present invention, the cross section of the second vertical side portion 3 is not linear, and in the example of FIG. 1, a smooth arc-shaped portion 5 having a small curvature is formed closer to the upper portion, as shown by a two-dot chain line in FIG. In addition, when fitted between one side of the sound insulating plate 31 and the flange 24, the arcuate part 5 is in contact with the inner surface of the flange 24, not the upper end part of the second vertical side part 3, and the arcuate part 5 reacts with the reaction force. It has a structure that conveys.

  A plurality of (six in the illustrated example) notch grooves 6 extending in the width direction are formed in the arc-shaped portion 5 by cutting or the like, thereby increasing the pull-out resistance in a state in which the arc-shaped portion 5 is in contact with vibration. This prevents the fixture 1 from coming out.

  In the notch groove 6, as shown in an enlarged view in FIG. 1 (b), the notch angle α below the groove on the surface of the second vertical side 3 is smaller than the notch angle β above the groove. . In this example, a notch having a depth of 0.5 mm is formed with respect to a plate thickness of 1.5 mm of the fixing metal 1, and a notch angle α = 90 ° below the groove and a notch angle β = 135 ° above the groove. It was. If the length in the width direction of the notch groove 6 is increased, a greater pulling resistance can be obtained.

  Table 1 summarizes the test results for the spring reaction force and the pull-out resistance.

  Comparative Example 1 was processed so as to receive a reaction force at the top of the conventional second vertical side, and to provide a pulling resistance with a protrusion at the center of the second vertical side (drawing number 85 of Non-Patent Document 2). / 195 is equivalent to the fixing bracket for H150), Comparative Example 2 is a fixing bracket in which the second vertical side portion is not particularly processed and the second vertical side portion is flat, and Examples 1 to 5 correspond to the embodiment of FIG. To do.

  In the case of a fixture for fixing a metal sound insulation panel to an H-shaped steel column, the spring reaction force is 200 kg or more, and the required performance is satisfied except for Comparative Example 2 where there is no data.

  The pull-out resistance is a pull-out force in a state where a load corresponding to the spring reaction force is applied, and the comparative example 1 was 23.0 kg, whereas in Examples 1 to 5 of the present invention, 40.5 to 48. The pulling resistance almost doubled as 0 kg was confirmed.

  FIG. 3 shows another embodiment in which the present invention is applied to a fixing member for a sound insulation wall. Compared with the embodiment in FIG. 1, the gap between the flange 24 of the H-shaped steel column 21 and the sound insulation plate 31. This is an example of the fixing bracket 11 (corresponding to the fixing bracket for H125 of the drawing number 87/195 of Non-Patent Document 2) used in the case where is small.

  In this example, a stainless steel strip having a thickness of about 1.5 mm is processed by bending or the like, and as shown in FIG. 3 (a), the first vertical side portion 12 hangs down and is folded at the lower end portion. The portion 13 rises obliquely upward and is folded back at the upper end portion of the second vertical side portion 13 to form a mountain-shaped inner folded portion 14 that enters between the first vertical side portion 12.

  A mounting hole 9 for mounting with a bolt or the like is formed at the center of the upper end of the first vertical side portion 12.

  As in the embodiment of FIG. 1, the cross section of the second vertical side portion 13 is not linear, and a smooth arc-shaped portion 15 having a small curvature is formed near the top, as shown by a two-dot chain line in FIG. In addition, when fitted between one side of the sound insulating plate and the flange 24, the arcuate part 15 is in contact with the inner surface of the flange 24, not the upper end part of the second vertical side part 13, and the reaction force is transmitted by the arcuate part 15. It has become.

  A plurality of strips (five strips in the illustrated example) that extend in the width direction are formed in the arcuate portion 15 by cutting or the like, thereby increasing the pulling resistance in a state in which the arcuate portion 15 is in contact with the vibration. This prevents the fixture 1 from coming out.

  In the notch groove 16, as shown in an enlarged view in FIG. 3B, the notch angle α below the groove on the surface of the second vertical side portion 13 is smaller than the notch angle β above the groove. . Also in this example, a notch with a depth of 0.5 mm is formed with respect to the plate thickness of 1.5 mm of the fixing metal 1, the notch angle α = 90 ° below the groove, and the notch angle β = 135 ° above the groove. It is said.

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

DESCRIPTION OF SYMBOLS 1 ... Fixing bracket, 2 ... 1st vertical side part, 3 ... 2nd vertical side part, 4 ... Inner turning part, 5 ... Arc-shaped part, 6 ... Notch groove, 7 ... Lower side part, 8 ... Horizontal piece part, 9 ... Mating hole,
DESCRIPTION OF SYMBOLS 11 ... Fixed metal fitting, 12 ... 1st vertical side part, 13 ... 2nd vertical side part, 14 ... Inner turning part, 15 ... Arc-shaped part, 16 ... Notch groove, 19 ... Mounting hole,
21 ... H-shaped steel column, 22 ... Web, 23 ... Flange, 24 ... Flange, 25 ... Fitting groove,
31 ... Sound insulation board, 32 ... Sound absorbing material

Claims (3)

The end of the wall panel is inserted into a vertically extending fitting groove formed on the side surface of the support column, and is fitted between one side of the wall panel and the inner surface of the fitting groove, thereby mounting the spring. A wall panel fixing bracket for fixing the wall panel to the column by force,
Folded at the first vertical side portion that contacts one side of the wall panel, the second vertical side portion that extends obliquely upward from the lower portion of the first vertical side portion, and the upper end portion of the second vertical side portion Having an inner folded portion of the chevron,
An arc-shaped portion whose cross section perpendicular to the width direction is convex on the opposite side of the panel is formed in at least the upper portion of the second vertical side portion, and the arc-shaped portion is formed on the inner surface of the fitting groove when mounted. A wall panel fixing bracket comprising a plurality of notched grooves for preventing slipping, which are in contact with each other and extend in the width direction of the second vertical side portion on the surface of the arc-shaped portion.   The depth of the said notch groove is 1/5-1/2 of the plate | board thickness of a 2nd vertical side part, The wall panel fixing bracket of Claim 1 characterized by the above-mentioned.   3. The wall panel fixing according to claim 1, wherein a cross-section of the notch groove is such that a notch angle on the lower side of the surface of the second vertical side portion is smaller than a notch angle on the upper side of the groove. Hardware.

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