JP6910025B2 - Fall prevention metal fittings - Google Patents

Description

The present invention relates to a fall prevention metal fitting that prevents a side-view U-shaped spacer interposed in a gap between a support of a sound insulation wall and a sound insulation panel from falling off a hanging plate attached to the support. be.

Conventionally, in order to shield (sound insulation) noise from noise sources such as highways, railroad tracks, and factories, sound insulation panels such as metal sound absorbing plates and concrete sound insulating plates are inserted into the flanges of columns made of H-shaped steel or the like. A sound insulation wall is installed.

The sound insulation panel of such a sound insulation wall has a limited thickness of a plurality of types of industrial products. On the other hand, the columns of the sound insulation wall are installed in various sizes at each installation site according to the surrounding environment such as roads. For this reason, sound insulation panels of a certain thickness are interposed between the flanges of columns of various widths, and the gap between the sound insulation panel and the columns is generally a U-shaped spacer for side view. Is installed.

However, in the U-shaped spacer, in general, the lip part at the upper end is only hooked on the hanging plate attached to the support column, so the U-shaped spacer is aged due to vibration or wind pressure. There was a problem that it would fall.

Therefore, in order to solve such a problem, for example, in Patent Document 1, the edge portion 2a of the sound insulation plate 2 is arranged in the U-shaped groove portion 4 of the support column 3, and the inner wall 4a of the groove portion 4 and the end of the sound insulation plate 2 are arranged. A U-shaped spacer 7 for side view is arranged at a distance from the edge portion 2a, and a leaf spring type fastener 5 is attached to the gap between the spacer 7 and the sound insulating plate 2, and the U-shaped spacer 7 is attached. A support member 8 that locks to the locking portion 6 is disclosed (see claim 1, FIG. 2, FIG. 6, etc. in the claims of Patent Document 1).

However, the support member 8 described in Patent Document 1 is formed with an elastic support portion 84 in which the tips of the lower ends of the side wall portions 83 are folded back. For this reason, strain is easily accumulated over time in the bent portion of the boundary between the upper wall portion 82 and both side wall portions 83 due to the moment of repeated load such as vibration and wind pressure, and plastic deformation is likely to occur, and the gripping force of the elastic support portion 84. There was a problem that the spacer 7 was weakened and the spacer 7 fell.

Further, in Patent Document 2, a steel plate is bent to form a bent portion 2 and a mounting portion 3, the mounting portion 3 is bent downward to extend the steel plate, and the lower end portion thereof is bent toward the bent portion 2 side to form a locking portion. A fixing bracket for a panel provided with No. 4 is disclosed (see Claim 1, FIG. 2, FIG. 6, etc. in the scope of claims in Patent Document 2).

The panel fixing bracket inserts the bent portion 2 into the gap between the panel and the support column, and presses the support column by the repulsive force of the spring to fix the panel to the support column. Then, by locking the locking portion 4 to the lower end of the panel mounting bracket or the like, it is possible to prevent the fixing bracket 1 from coming off for a long period of time even in an environment where vibration is applied.

However, the panel fixing bracket described in Patent Document 2 prevents the fixing bracket itself from coming off, and although it can be applied to a newly installed sound insulation wall, it can be applied to a spacer of an existing sound insulation wall. Could not be prevented from falling off due to vibration or the like.

Japanese Unexamined Patent Publication No. 2010-261238 Japanese Unexamined Patent Publication No. 2000-336766

Therefore, the present invention has been devised in view of the above-mentioned problems, and an object of the present invention is that the spacer is displaced from the hanging plate and falls even when a repetitive load such as vibration or wind pressure is applied. The purpose is to provide a fall prevention metal fitting that can prevent the above.

The fall prevention metal fitting according to the first invention is a fall prevention metal fitting of a spacer that is interposed in a gap between a support of a sound insulation wall and a sound insulation panel, and one end of which is hooked to a hanging plate fixed to the sound insulation panel side of the support. A flat upper surface portion and a pair of left and right leg portions extending downward from the left and right end portions of the upper surface portion are provided, and the pair of leg portions have end faces on the lower surface of the upper side portion of the spacer. It is characterized in that the cut-up claws that are hooked by the contact with the upper surface portion are formed on the base end portion side that is connected to the upper surface portion.

The fall prevention metal fitting according to the second invention is characterized in that, in the first invention, the raised claw is formed along one side side of the leg portion.

In the first invention or the second invention, the fall prevention metal fitting according to the third invention is folded downward from one end of the upper surface portion to form an insertion piece to be inserted between the spacer and the support column. It is a feature.

In any one of the first invention to the third invention, the fall prevention metal fitting according to the fourth invention improves the bending rigidity of the plate surface of either one or both of the upper surface portion and the pair of leg portions. It is characterized in that a bead is formed.

In any of the second to fourth inventions, the fall prevention metal fitting according to the fifth invention is engaged in engaging with the hanging plate on the other side side of the leg portion on which the raised claw is not formed. It is characterized in that a claw is formed.

According to the first to fifth inventions, since the cut-up claw is formed on the base end side connecting to the upper surface portion of the leg portion, even when a repeated load is applied, the upper surface portion and the leg portion are connected by a moment. Strain does not accumulate in the bent part of the boundary. Therefore, it is possible to prevent the spacer from falling for many years. Further, since the cut-up claw is hooked on the spacer, the fall prevention metal fitting does not fall even when a repeated load such as vibration or wind pressure is applied. Therefore, it is possible to prevent the spacer inserted between the legs of the fall prevention metal fitting from falling.

In particular, according to the second invention, since the cut-up claw is formed along one side of the leg, the number of cutting lines required to cut up the cut-up nail is small. Therefore, it is possible to reduce the processing cost and the damage of the press machine, and to reduce the cost of the fall prevention metal fittings.

In particular, according to the third invention, since the insertion piece to be inserted between the spacer and the support column is formed, it is resistant to vibration or the like along the web direction of the support column, and further prevents the spacer from falling. be able to.

In particular, according to the fourth invention, since the bead that improves the bending rigidity of the plate surface is formed, the bending rigidity is improved, the metal plate material of the base material of the fall prevention metal fitting can be thinned, and the manufacturing cost is reduced. It can be reduced.

In particular, according to the fifth invention, since a locking claw that locks to the hanging plate is formed separately from the raised claw, it is fixed to the support column and locked to the immovable hanging plate by the locking claw. can do. Therefore, it is possible to more reliably prevent the spacer from falling.

It is a front side perspective view which shows the fall prevention metal fitting which concerns on embodiment of this invention. It is a back side perspective view which shows the fall prevention metal fitting of the same above. It is a front view which shows the fall prevention metal fitting of the same above. It is a left side view which shows the fall prevention metal fitting of the same above. It is a top view which shows the fall prevention metal fitting of the same above. It is a figure which shows the state before attaching to the spacer of the fall prevention metal fitting of the same above, (a) is a perspective view which cuts the web of a support and shows the inner surface of a support flange near a spacer, (b) is along the web of a support. It is a partially enlarged side view of the inner surface of the column flange near the spacer in the horizontal direction. It is a figure which shows the state just before attaching to the spacer of the fall prevention metal fitting of the same above, (a) is a perspective view which cuts the web of a support and shows the inner surface of a support flange near a spacer, (b) is along the web of a support. It is a partially enlarged side view of the inner surface of the column flange near the spacer in the horizontal direction. It is a figure which shows the state which the above-mentioned fall prevention metal fitting is attached to a spacer, (a) is the perspective view which shows the inner surface of the column flange near the spacer by cutting the web of a column, (b) is horizontal along the web of a column. It is a partially enlarged side view which looked at the inner surface of the column flange near the spacer in the direction. It is a perspective view which shows the mounting state of the conventional spacer.

Hereinafter, the fall prevention metal fittings according to the embodiment of the present invention will be described in detail with reference to the drawings.

<Spacer>
First, the U-shaped spacer will be briefly described with reference to FIG. FIG. 9 is a perspective view showing a conventional spacer mounting state. The X direction in the drawing refers to the width direction of the flange, which is the horizontal direction along the flange Hf of the plurality of columns H-shaped steel H1 erected at predetermined intervals on the ground. Further, the Y direction in the drawing points to the web width direction which is the horizontal direction along the web Hw of the support column H-shaped steel H1. The Z direction in the figure points in the vertical direction (the same applies hereinafter).

As described above, the spacer C1 is a laterally-viewed substantially U-shaped spacer having a lip portion folded back at the upper end to fill the gap between the flange Hf and the sound insulation panel P1. As shown in FIG. 9, the spacer C1 is installed by hooking the folded lip portion of the spacer C1 to the hanging plate F1 welded to the inner surface of the flange Hf. The hanging plate F1 is attached to the vicinity of the boundary between the steps of the sound insulation panel P1 fitted in a plurality of steps between the columns H-shaped steel H1.

A steel leaf spring PS is interposed between the spacer C1 and the sound insulation panel P1. Therefore, the sound insulation panel P1 fitted between the support columns H-shaped steel H1 is elastically supported by the support column H-shaped steel H1.

<Fall prevention metal fittings>
Next, the fall prevention metal fittings according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5.

FIG. 1 is a front perspective view showing a fall prevention metal fitting according to an embodiment of the present invention, and FIG. 2 is a rear perspective view thereof. 3 is a front view showing the fall prevention metal fitting according to the present embodiment, FIG. 4 is a left side view thereof, and FIG. 5 is a plan view thereof.

As shown in FIGS. 1 to 5, the fall prevention metal fitting 1 according to the present embodiment is a metal fitting that has been bent from a steel plate, and the spacer C1 described above is in the left-right direction (X direction) of the hanging plate F1 due to vibration or the like. It is a metal fitting that prevents the product from slipping off and falling from the hanging plate F1.

The fall prevention metal fitting 1 is composed of a U-shaped metal fitting main body 2 with an open lower end and a insertion piece 3 which is a steel plate protruding downward from the upper surface of the metal fitting main body 2 and is a spacer. It is a metal fitting that prevents C1 from falling from the hanging plate F1.

(Metal fitting body)
The metal fitting body 2 is composed of a pair of left and right leg portions 21 and 22 having a rectangular flat plate shape, and a rectangular plate-shaped upper surface portion 23 connecting the upper ends thereof.

(leg)
The legs 21 and 22 are a pair of left and right parts provided at a distance slightly wider than the width of the spacer C1 and the hanging plate F1. It has a function of preventing the spacer C1 from falling from the hanging plate F1 due to wind pressure or the like.

The leg portions 21 and 22 are formed with cut-up claws 21a and 22a, which are cut and raised from the base material plate surface of the leg portions 21 and 22, respectively. These cut-up claws 21a and 22a function as locking members to be hooked on the upper side portion of the spacer C1 described above (see also FIGS. 6 to 8).

The positions where the raised claws 21a and 22a are formed are not on the open tip side of the metal fitting body 2, but on the base end side, that is, more than half of the base plate surface of the legs 21 and 22 in the height direction. It is provided on the side connected to the upper surface portion 23. Therefore, unlike the conventional fall prevention metal fittings described in Patent Document 1, in which elastic support portions are formed at the lower ends of both side wall portions, a repetitive load such as vibration is applied to the total length of the legs 21 and 22. The moment does not act on the bent portion at the boundary between the leg portions 21 and 22 and the upper surface portion 23. Further, even if the cut-up claws 21a and 22a are slightly opened when worn or due to the accumulation of strain for many years, the distance between the legs 21 and 22 does not open. Therefore, it is possible to prevent the spacer C1 from falling from the hanging plate F1 for a long period of time.

These cut-up claws 21a and 22a may be provided near the center of the base material plate surface of the legs 21 and 22, but are formed along one side of the legs 21 and 22. Is preferable. This is because the number of cutting lines required to cut up the cut-up claws 21a and 22a is small.

Further, the cut-up claws 21a and 22a are formed on the front side, that is, the side away from the flange Hf along the web width direction (Y direction) among the side sides of the legs 21 and 22. Is more preferable. This is because the hanging plate F1 is inserted between the legs 21 and 22 except for the cut-up claws 21a and 22a. Therefore, the legs 21 and 22 can be installed at the open ends of the hanging plate F1 in the flange width direction (X direction), and the spacer C1 can be reliably prevented from falling from the hanging plate F1. ..

In addition, the legs 21 and 22 are formed with convex beads 21b and 22b having a semicircular cross section protruding outward from the plate surface near the back surface at the center of the base material plate surface. This is because the bending rigidity of the plate surface of the legs 21 and 22 can be improved, and the steel plate of the legs 21 and 22 can be made thinner to reduce the weight. Of course, it goes without saying that the convex beads 21b and 22b may protrude inward from the plate surface of the legs 21 and 22.

On the back side of the legs 21 and 22 on which the raised claws 21a and 22a are not formed, a locking claw that locks to the hanging plate F1 separately from the raised claws 21a and 22a (shown in the figure). ) May be provided separately. This is because by providing the locking claws, the hanging plate F1 welded to the support column H-shaped steel H1 can be locked with the locking claws, and the spacer C1 can be more reliably prevented from falling.

(Upper surface)
The upper surface portion 23 is a rectangular flat plate-shaped portion connecting the upper ends of the legs 21 and 22 to each other, and as shown in FIG. 2 and the like, the above-mentioned insertion piece 3 is folded downward from one end on the back surface side.

Further, a convex bead 23a having a semicircular cross section is formed so as to project outward from the plate surface near the substantially central front surface of the base material plate surface of the upper surface portion 23. This is because the flexural rigidity of the plate surface can be improved, and the steel plate on the upper surface portion 23 can be made thinner and lighter.

(Insert piece)
As shown in FIG. 2 and the like, the insertion piece 3 is a steel plate that projects downward from one end of the upper surface portion 23 of the metal fitting body 2 on the back surface side, and the spacer C1 and the support column H-shaped steel that are hooked to the hanging plate F1. It is used by being inserted between the inner surface of the flange Hf of H1. The insertion piece 3 is hooked on the hanging plate F1 and has a function of preventing the fall prevention metal fitting 1 from being displaced in the Y direction.

<How to attach the fall prevention metal fittings to the spacer>
Next, a method of attaching the fall prevention metal fitting 1 to the spacer C1 according to the embodiment of the present invention will be described with reference to FIGS. 6 to 8. An example will be described in which a fall prevention metal fitting 1 is additionally installed as a fall prevention measure for the existing spacer C1. Of course, it goes without saying that it may be attached to the newly installed spacer C1.

6A and 6B are views showing a state before the fall prevention metal fitting 1 is attached to the spacer C1, in which FIG. 6A is a perspective view showing the inner surface of the flange Hf near the spacer C1 by cutting the web Hw, and FIG. 6B is the web. It is a partially enlarged side view which looked at the inner surface of the flange Hf near the spacer C1 in the horizontal direction along Hw. FIG. 7 is a diagram showing a state immediately before the fall prevention metal fitting 1 is attached to the spacer C1, and FIG. 8 is a diagram showing a state in which the fall prevention metal fitting 1 is attached to the spacer C1. Note that FIGS. 7 and 8 (a) and (b) are the same as those in FIG.

As shown in FIG. 6, before mounting the fall prevention metal fitting 1, first, a shino is driven into the back surface of the spacer C1, that is, between the spacer C1 and the flange Hf, and the insertion piece 3 of the fall prevention metal fitting 1 is inserted. Make it easier.

Next, the positional deviation of the spacer C1 from the hanging plate F1 in the width direction (X direction) of the flange is adjusted so that there is no deviation between the two.

After that, as shown in FIG. 7, the fall prevention metal fitting 1 is mounted on the upper end surface of the spacer C1 which is hooked on the hanging plate F1. At this time, the insertion piece 3 of the fall prevention metal fitting 1 is brought into contact with the inner surface of the flange Hf of the support column H-shaped steel H1, and the insertion piece 3 is slid on the flange Hf to push down the fall prevention metal fitting 1.

Then, the insertion piece 3 enters the gap between the flange Hf and the spacer C1, and the fall prevention metal fitting 1 is securely attached to the spacer C1 and the hanging plate F1. Therefore, the fall prevention metal fitting 1 is less likely to come off due to vibration or the like acting in the web width direction (Y direction), and the fall prevention function of the spacer C1 is further improved. Further, it is possible to prevent the fall prevention metal fitting 1 from being lifted by the frictional force between the insertion piece 3 and the flange Hf.

Next, as shown in FIG. 8, the fall prevention metal fitting 1 is pushed down by driving with a rubber hammer or the like until the inner surface of the upper surface portion 23 of the fall prevention metal fitting 1 comes into contact with the upper side portion of the spacer C1. At this time, it is confirmed that the cut-up claws 21a and 22a are hooked to the lower end of the upper side portion of the spacer C1. This is because the cut-up claws 21a and 22a are hooked on the spacer C1 to prevent the fall prevention metal fitting 1 from being lifted by vibration or the like. Since the fall prevention metal fitting 1 does not rise, the spacer C1 is inserted between the legs 21 and 22 of the fall prevention metal fitting 1, and the spacer C1 can be reliably prevented from falling from the hanging plate F1.

According to the fall prevention metal fitting 1 according to the present embodiment described above, the cut-up claws 21a and 22a are formed on the base end side of the leg portions 21 and 22 connected to the upper surface portion 23. Therefore, even when a load is repeatedly applied to the fall prevention metal fitting 1, strain does not accumulate in the bent portion at the boundary between the upper surface portion 23 and the leg portions 21 and 22 due to the moment. Therefore, it is possible to prevent the spacer C1 from falling for many years. Further, since the cut-up claws 21a and 22a are hooked on the spacer C1, there is no possibility that the fall prevention metal fitting 1 will be lifted and come off even when a repeated load such as vibration or wind pressure is applied. Therefore, it is possible to prevent the spacer C1 inserted between the legs 21 and 22 of the fall prevention metal fitting 1 from falling.

Further, according to the fall prevention metal fitting 1, since the cut-up claws 21a and 22a are formed along one side side of the legs 21 and 22, it is necessary to cut up the cut-up claws 21a and 22a. Fewer cutting lines are required. Therefore, it is possible to reduce the processing cost and the damage of the press machine, and to reduce the cost of the fall prevention metal fitting 1.

In particular, according to the fall prevention metal fitting 1, since the insertion piece 3 to be inserted between the spacer C1 and the flange Hf is formed, the fall prevention metal fitting 1 is also subjected to vibration or the like acting in the web width direction (Y direction). It becomes difficult to come off, and the fall prevention function of the spacer C1 is further improved. Further, it is possible to prevent the fall prevention metal fitting 1 from being lifted by the frictional force between the insertion piece 3 and the flange Hf, and in that respect as well, the spacer C1 can be reliably prevented from falling.

Although the fall prevention metal fittings and the mounting method thereof according to the present embodiment have been described in detail above, all of the above-mentioned or illustrated embodiments merely show one embodiment embodied in carrying out the present invention. do not have. Therefore, the technical scope of the present invention should not be construed in a limited manner by these.

In particular, although the support made of H-shaped steel has been described as an example of the support of the sound insulation wall, the support may be made of channel steel or other steel material, and the sound insulation panel may be a metal sound absorbing plate, a concrete sound insulating plate, or the like. The present invention can be applied to various types.

1: Fall prevention metal fittings 2: Metal fitting bodies 21 and 22: Legs 21a, 22a: Raised claws 21b, 22b: Convex bead 23: Top surface 23a: Convex bead 3: Insert piece C1: Spacer F1: Hanging plate H1 : Support column H-shaped steel Hf: Flange Hw: Web P1: Sound insulation panel PS: Leaf spring

Claims (5)

It is a fall prevention metal fitting of a spacer that is interposed in the gap between the support of the sound insulation wall and the sound insulation panel, and one end of which is hooked to the hanging plate fixed to the sound insulation panel side of the support.
A flat upper surface portion and a pair of left and right leg portions extending downward from the left and right ends of the upper surface portion are provided.
The pair of legs are characterized in that cut-up claws, which are hooked by contacting the end surface with the lower surface of the upper side of the spacer, are formed on the base end side connected to the upper surface. Fall prevention metal fittings. The fall prevention metal fitting according to claim 1, wherein the cut-up claw is formed along one side side of the leg portion. The fall prevention metal fitting according to claim 1 or 2, wherein an insertion piece is formed by being folded downward from one end of the upper surface portion and inserted between the spacer and the support column. The invention according to any one of claims 1 to 3, wherein a bead for improving the bending rigidity of each plate surface is formed on either one or both of the upper surface portion and the pair of leg portions. Fall prevention metal fittings. The invention according to any one of claims 2 to 4, wherein a locking claw that locks to the hanging plate is formed on the other side side of the leg portion on which the raised claw is not formed. Fall prevention metal fittings

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