JP2003268727A - Fastening for panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening considerably improved in the service life regarding a plate spring type fastening inserted in a groove part of a post to support a panel. <P>SOLUTION: This fastening for the panel is provided with a first vertical side part 12 extending almost in a vertical direction; a second vertical side part 13 extending almost in a vertical direction so that a horizontal distance to the first vertical side part 12 is enlarged toward the upper side, with the lower end part connected to the lower end part of the first vertical side part 12; a first short side part 14 connected to the upper end part of the second vertical side part and extending obliquely downward; and a second short side part extending obliquely upward from the tip of the first short side part 14. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leaf spring type panel fastener for fixing a panel such as a sound insulating plate of a soundproof wall.

[0002]

2. Description of the Related Art In general, a soundproof wall provided on both sides of an automobile road, for example, as shown in Japanese Utility Model Laid-Open No. 4-57513, has a plurality of pillars which are erected at predetermined intervals and Grooves formed in the opposing surfaces of a pair of columns adjacent to each other and having a section U-shaped groove extending in the length direction of the column and a section U-shaped groove facing each other, the groove of the section U-shaped groove The sound insulation plate has a thickness smaller than the width. Then, a leaf spring type sound insulating plate fastener is mounted in a gap (a gap in the groove width direction) between the sound insulating plate and one side surface of the U-shaped groove in cross section, and the sound insulating plate is secured by the elastic restoring force of the fastener. It is adapted to be pressed and fixed to the other side surface of the U-shaped groove in cross section.

[0003] The fastener is basically extended in the vertical direction, and when mounted in the gap, one surface in the thickness direction abuts the surface of the sound insulation plate on the side of the clearance in the thickness direction. When the first vertical side portion is provided so as to face the first vertical side portion and the horizontal distance between the first vertical side portion and the first vertical side portion increases toward the upper side, and the fastener is mounted in the gap. ,
A first vertical side portion in the thickness direction and an upper end portion on the opposite side surface are provided with a second vertical side portion that abuts on one side surface of the U-shaped groove in cross section. The lower end portions of the first vertical side portion and the second vertical side portion are connected to each other via a connecting side portion as in the above publication, or are disclosed in, for example, Japanese Utility Model Laid-Open No. 61-50109. As shown in FIG.

In the above-described conventional fastener, the first inner side portion extending slightly downward from the upper end of the second vertical side portion in the direction of the second vertical side portion and the lower end of the first inner side portion. A second inner side portion extending downward from the portion in the direction of the first vertical side portion. The horizontal distance between the lower end portions of the first vertical side portion and the second vertical side portion is set smaller than the gap, while the horizontal distance between the upper end portions is set larger than the gap. In order to install the fasteners in the gap between the sound insulation plate and the U-shaped groove in cross section, first, the lower end portions of the first vertical side portion and the second vertical side portion are inserted into the gap, and the fastening is performed. By hitting the metal fitting from above with a hammer or the like, the first vertical side and the second
The upper ends of the vertical sides are bent in directions toward each other and are completely inserted into the gap.

[0005]

When mounting, the first
The connecting portion between the inner side portion and the second inner side portion moves downward while being in contact with the first vertical side portion, and the lower end portion of the second inner side portion is the second side portion.
It moves downward while touching the vertical side. In that case, the second vertical side portion and the first inner side portion are in a direction in which the angles are narrowed (inward direction), but the first inner side portion and the second inner side portion are in a widened angle. Direction (outward direction). Therefore, in the case where the second inner side portion is formed by bending the first inner side portion inward with a single plate material, at the time of mounting,
The angle relationship between the two is in the direction opposite to this bending direction, that is, in the direction that expands outward.Therefore, stress is applied to this connection part in the inward bending direction during molding and in the outward bending direction during insertion. Under high-strength conditions such as where high strength is required, long-term use, and repeated use, the strength of this part is insufficient,
There is a problem such as cracking or damage.

When the fastener is mounted by hitting it with a heavy hammer, the first inner side portion is hit and it is forcibly moved downward to narrow the gap between the first vertical side portion and the second vertical side portion. Therefore, the first inner side portion may be damaged by hitting hard, and if the hitting force is weak, the fastener cannot be pushed in. In particular, in order to strike the first inner side portion downward, the first
It was necessary to press the first inner side portion in the direction in which the space between the vertical side portion and the second vertical side portion was narrow, which required a large tapping force and was poor in workability.

The present invention is intended to eliminate the above-mentioned drawbacks of the prior art, and the bending direction of various side members such as a vertical side portion when a fastener is formed from a single plate material, and the fastener as a panel. By paying attention to the bending direction that acts on each side member when it is inserted in the gap with the groove, the bending direction at the time of molding is the same as the bending direction at the time of mounting.

[0008]

In order to achieve the above object, in the invention of claim 1, a panel body provided with a rectangular panel and a column having a groove portion for supporting an end edge portion of the panel. In, a plate spring type fastener which is mounted in a gap between the groove and the end edge of the panel when the panel is inserted into the groove of the strut and presses the panel into the groove by an elastic restoring force. A first vertical side portion that extends substantially in the vertical direction and has one surface in the thickness direction abutting the surface on the side of the clearance in the thickness direction of the panel when mounted in the clearance; It is connected to the lower end of the side portion, extends substantially vertically so as to face the first vertical side portion and increase the horizontal distance from the first vertical side portion toward the upper side, and is mounted in the gap. Sometimes, a second vertical side portion whose upper end contacts the side surface of the groove, and the second vertical side. A first short side portion that is connected to the upper end portion of the first vertical side portion and extends downward from the upper end portion, and the lower end portion of the first short side portion. From the first vertical side portion to a second short side portion extending upward, the first vertical side portion when the fastener is mounted in the gap between the groove portion and the panel. And the second vertical side portion, the second vertical side portion and the first short side portion, and the first short side portion and the second short side portion, and the restoring force therebetween. Then, the panel is clamped in the groove.

The second vertical side portion is bent and formed inward with respect to the first vertical side portion, the first short side portion is bent and formed inward with respect to the second vertical side portion, and the first short side portion is formed. The second short side is formed by bending the second short side outward, but in this configuration, when the fastener is attached, the interval between the first vertical side and the second vertical side, and the second vertical side. Since the distance between the portion and the first short side portion and the distance between the first short side portion and the second short side portion are narrowed, the movement is in the same direction as the bending direction. Therefore, the fatigue fracture strength in these parts was significantly increased and the durability was significantly improved. That is, when the bending direction at the time of molding and the moving direction at the time of mounting are opposite to each other, a force acts to bend the connecting portion inward and outward. As a result, the connection portion is setted, the elastic restoring force is lost, and in some cases, cracks are formed, which makes it unusable. On the other hand, in the present invention, as described above, since the bending force acts in the same direction, the fatigue strength is remarkably increased, and the occurrence of settling and cracks is greatly reduced.

Further, at the time of mounting, since the first vertical side portion is struck to be pushed into the gap between the panel and the groove portion, the second inner side portion and the first vertical side portion
At the contact portion with the vertical side portion, the first vertical side portion is pushed downward, and the second inner side portion is relatively upward (the second vertical side portion and the second vertical side portion).
As a result of the movement in a wide half-angle with the vertical side), the mounting work becomes easy. In particular, since the flat surface portion of the first vertical side portion is not hit, but the end face portion thereof is hit, the buckling force acts on the first vertical side portion, not the bending force. Since the buckling resistance is high with respect to the bending force, it is possible to greatly reduce the possibility of mounting failure due to deformation or damage of the first vertical side portion even when hit.

According to a second aspect of the present invention, the pillars are erected at a predetermined interval, the groove portions are formed on the facing surfaces of the pair of adjacent pillars, and the U-shaped cross section extends in the longitudinal direction of the pillars. Is a groove, the panel is fitted between the U-shaped grooves facing each other, and the thickness is set to be smaller than the groove width of the U-shaped groove in the cross section. It is a leaf spring type panel fastener that is mounted in a gap between a plate and one side surface of a U-shaped groove in cross section and presses the sound insulating plate against the other side surface of the U-shaped groove in cross section by an elastic restoring force.

With the above construction, it can be effectively utilized for a soundproof wall installed on a road or the like. Especially in sound barriers,
Due to the effects of natural phenomena and wind pressure and vibrations received from the traveling vehicle, rattling of the gap between the sound insulating plate and the groove and vibration of the sound insulating plate are severe, and it is used under severe conditions, but this fastener is excellent in durability Even under the above-mentioned harsh usage conditions, it can sufficiently exert its effect and endure.

According to a third aspect of the present invention, in the fastener of the panel according to the first or second aspect, when the fastener is attached, the end of the second short side portion on the side of the first vertical side portion is the first end. Since the position in contact with the vertical side portion and the position in which the second vertical side portion contacts the support column are arranged to be close to each other in the vertical direction, the restoring spring force of the fastener at the time of mounting. Effectively works and can firmly support the panel.

According to a fourth aspect of the present invention, in the panel fastener according to any one of the first to third aspects, the connecting portion between the first vertical side portion and the second vertical side portion and the second vertical side portion. Since the connecting portion between the portion and the first short side portion and the connecting portion between the first short side portion and the second short side portion are connected by smooth curves, stress concentrates on these connecting portions. Can be reduced, and the possibility of causing damage such as cracks can be dramatically reduced.

According to a fifth aspect of the present invention, in the panel fastener according to any one of the first to fourth aspects, the second short side portion is connected to the first vertical side portion side end portion, and the second short side portion is connected to the second vertical side portion side end portion. It is a configuration including a third short side portion which is a vertical side portion and extends upward. In this configuration, the bent portion of the second short side portion and the third side portion is in contact with the first vertical side portion, not the end edge portion of the second short side portion. The relative movement of the first vertical side portion and the second short side portion is smooth, and the first vertical side portion is deformed. Less likely to be damaged.

According to a sixth aspect of the present invention, in the panel fastener according to any one of the first to fifth aspects, the connecting portion between the first vertical side portion and the second vertical side portion, the second vertical side portion. Since the first bead is provided at least at one place of the connecting portion between the portion and the first short side portion and the connecting portion between the first short side portion and the second short side portion, the strength of these connecting portions is high. Is reinforced, the life is remarkably improved.

According to a seventh aspect of the present invention, in the panel fastener according to the sixth aspect, since the first beads are provided on both sides in the width direction of the fastener in a vertical streak pattern,
Easy to mold.

According to an eighth aspect of the present invention, in the panel fastener according to any one of the first to seventh aspects, a second bead is provided at a portion of the first vertical side portion where the second short side portion contacts. Since it is provided, the strength of the contact portion with the second short side portion is improved and the contact area between the both is reduced, so that the relative movement between them is smoothly performed during mounting, and the mounting of the fastener is easy. Becomes Further, since the strength of the first vertical side portion is improved, the first vertical side portion is struck when the first vertical side portion is mounted in the groove portion.
The vertical side is inserted smoothly.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) FIGS.
An example in which a fastener is applied to a soundproof wall shielding plate according to the first embodiment of the present invention will be described. 1 shows a soundproof wall 1 provided with fasteners 10, the soundproof wall 1 being on both sides of an automobile road along the automobile road (direction perpendicular to the plane of FIG. 1)
Is provided with a large number of columns 2, 2, ... Standing up at a predetermined interval. The upper portion of each of the columns 2 is curved in an arc shape toward the motorway side. Each of the columns 2 is made of H-shaped steel, and has two groove portions 3 and 3 each having a U-shaped cross section and extending in the lengthwise direction of the column 2. The openings of the groove portions 3 extend along the automobile road. It stands upright in the direction (length direction of the soundproof wall 1). That is, each groove portion 3 is formed on the facing surface of the pair of columns 2 and 2 adjacent to each other.

A plurality of sound insulating plates 4, 4, ... Extending in the direction along the automobile road are vertically stacked between the groove portions 3, 3 facing each other on the facing surfaces of the pair of columns 2, 2. It is fitted with. Each sound insulating plate 4 is made of a plastic such as polycarbonate or a box type made of iron and aluminum, and its thickness t is set to be smaller than the groove width W of the groove portion 3. A metal exterior plate (not shown) is attached and fixed to the side surface of each of the columns 2 opposite to the automobile road.

In the gap (gap amount S = Wt) between each sound insulating plate 4 and each groove portion 3 on the side opposite to the automobile road, the sound insulating plate 4 is attached to the groove portion 3 on the automobile road side by elastic restoring force. A plate spring type sound insulation plate fastening metal fitting 10 which is pressed against the side surface of and is made of spring steel or the like is mounted. This fastener 1
0 is provided at the upper ends of both ends of each sound insulating plate 4 in the length direction, and presses the upper end of the sound insulating plate 4 on the side opposite to the automobile road in the thickness direction (side face of the gap) toward the automobile road. Is configured. In addition, a step portion 4 which is recessed downward is provided on the side of the motorway at the upper end of each sound insulating plate 4.
a is formed, and between the step portion 4a and the side surface of the groove portion 3 on the side of the motorway, a convex portion (not shown) provided at the lower end portion of the sound insulating plate 4 stacked immediately above the sound insulating plate 4 is formed. Is inserted, and this restricts the movement of the lower end of the sound insulating plate 4 in the thickness direction.

Specifically, as shown in FIGS. 3 and 4, the fastener 10 has its lower surface abutting the upper end surface of the sound insulating plate 4 when the fastener 10 is mounted in the gap. The mounting side portion 11 is provided with a fitting hole 11a that substantially fits with the fitting portion 4c (see FIG. 1) having a circular cross section, which is provided to project from the upper end surface. An upper end portion of a first vertical side portion 12 that extends in a substantially vertical direction is connected to an end portion of the attachment side portion 11 on the opposite side of the automobile road. The side surface of the vehicle road in the thickness direction of the first vertical side portion 12 comes into contact with the side surface of the gap in the thickness direction of the sound insulating plate 4 almost entirely when the fastener 10 is mounted in the gap. ing.

The lower end portion of the first vertical side portion 12 extends substantially vertically so as to face the first vertical side portion 12 and increase the horizontal distance from the first vertical side portion 12 toward the upper side. Second
The lower end of the vertical side portion 13 is connected. The upper end portion of the side surface opposite to the first vertical side portion 12 (the side surface opposite to the motorway) in the thickness direction of the second vertical side portion 13 has the groove portion 3 of the groove portion 3 when the fastener 10 is mounted in the gap. It comes in contact with the side opposite to the motorway.

A first short side portion 14 extending from the upper end portion to the first vertical side portion 12 side and downward is connected to the upper end portion of the second vertical side portion 13. At the end (lower end) on the first vertical side 12 side of the first short side 17, the second short side 15 extending from the end toward the first vertical side 12 and upward.
Are connected. The first vertical side portion 1 of the second short side portion 15
The first vertical side portion 1 is provided on the second side end (upper end) from the end.
The third short side portion 16 extending toward the upper side on the second side is connected. The connecting portion between the second short side portion 15 and the third short side portion 16 is adapted to contact the first vertical side portion 12.
In the free state in which the fastener 10 is not attached, the connecting portion between the second short side portion 15 and the third short side portion 16 does not contact the first vertical side portion, and the gap between the sound insulating plate 4 and the groove portion 3 is not formed. It may be brought into contact when it is inserted into S, or it may be brought into contact with light force from the beginning in a free state. However, considering the ease of insertion, the former, which does not touch in the free state, is preferable.

Next, a method of forming the stopper 10 will be described.
The fastener 10 is made of a single plate material, and the attachment side portion 11 and the first vertical side portion 12 are bent at a substantially right angle to form the first vertical side portion 12.
The second vertical side portion 13 is bent inward (clockwise in FIG. 3) with respect to the first vertical side portion 13 with respect to the upper end portion of the first vertical side portion 13.
The short side portion 14 is bent inward (clockwise direction), the second short side portion 15 is bent outward (counterclockwise direction) with respect to the first short side portion 14, and the third short side portion 15 is bent with respect to the second short side portion 15. The side portion 16 is formed by bending it outward (counterclockwise).

The length H (distance in the direction of the gap S) of the fastener 10 molded in this manner is larger than the gap S between the sound insulating plate 4 and the groove portion 3 in the free state as shown in FIG.
When mounting in the gap S, the fastener is forcibly fitted and contracted according to the gap S. During this insertion work, the first vertical side portion 12 and the second vertical side portion 13 of the fastener 10 are rotated in the directions in which the angles are narrowed (inward direction), and the second vertical side portion 13 and the first short side portion are rotated. The portion 14 is rotated in a direction in which the angles are narrowed (inward direction), and the first short side portion 14 and the second short side portion 15 are rotated in a direction in which the angles are narrowed (outer direction), and the bending directions are respectively. Rotate in the same direction as. Therefore, the bending direction at the time of molding and the rotating direction at the time of mounting are the same with respect to the connecting portion of each vertical side portion / each short side portion, so that there is no occurrence of settling, cracks, cracks, etc. at this portion. Significantly reduced, durability was dramatically improved.

The following shows the test results of the fastener of this embodiment and the comparative example. FIG. 6 shows a conventional example, and FIG. 7 shows the present invention.
A conventional fastener was set on the base as shown in FIG. 6, and a compressive load of about 300 kg was applied to give a vertical vibration of 3 Hertz. The amplitude at that time is 0.5 mm. 10
After vibrating up and down 100,000 times, the state of the fastener was inspected.
As a result, in the conventional product, a crack was generated in the portion in contact with the first vertical side portion 50, that is, the connecting portion between the inner side portion 51 and the inner side portion 52, or complete separation and destruction occurred. Some of them had a permanent set and were plastically deformed, and the elastic restoring force was almost lost. On the other hand, in the product of the present invention, as a result of the same test as the conventional example, cracking, large deformation, settling and the like did not occur. This result is considered to be due to the fact that in the present invention, the bending direction at the time of molding matches the bending method at the time of mounting, and the fatigue strength is significantly improved.

Further, as shown in FIG. 4, when the fastener 10 is mounted in the gap S, the second vertical side 13 is in contact with the groove 3, that is, the second vertical side 13 and the first short side. The horizontal portion where the connection portion with the portion 14 and the portion where the second short side portion 15 contacts the first vertical side portion 12, that is, the connection portion with the second short side portion 15 and the third short side portion 16 are substantially the same. In this position, the restoring spring force can effectively act on the left and right in the horizontal direction.

In order to mount the stopper 10 in the gap S,
When the first vertical side portion 12 is hit with a hammer or the like, the first vertical side portion 12 descends and the second short side portion 15 relatively rises. That is, the second short side portion 15 is relatively
Since the first vertical side portion 12 is moved to the wider side with respect to the vertical side portion 13, even when the first vertical side portion 12 is pushed into the gap S narrower than the length N of the fastener 10, it is tapped with a comparatively light force. be able to.

In this embodiment, from the upper end of the second vertical side portion 13 to the first short side portion 14, the first short side portion 14 to the second short side portion 15, and the second short side portion 15 to the third short side portion 15. Since it is formed so as to draw a curved line in a substantially SS shape over the side portion 15 and many curved portions are provided, the compression load is dispersed in these curved portions when the fastener 10 is attached, and It has the advantage that the compressive load on the part is reduced and cracking is less likely to occur.

Incidentally, the mounting side portion 11 provided in the first embodiment.
Is not always necessary, and the attachment side part 11 may be omitted if the side surface of the first vertical side portion 12 of the automobile road is attached to the side surface of the sound insulating plate 4 opposite to the automobile road when the fastener 10 is attached. . In addition, the shape of the connecting portion between the first vertical side portion 12 and the second vertical side portion 13 is an arc-shaped cross section, but in the case of a soundproof wall in which the gap S between the groove portion 3 and the sound insulating plate 4 is wide. May be provided with a horizontally extending flat surface portion, and both ends thereof may be connected to the lower ends of the first vertical side portion 12 and the second vertical side portion 13 by smooth curves.

(Embodiment 2) FIG. 5 shows Embodiment 2 of the present invention (note that the same parts as those in FIGS. 3 and 4 are designated by the same reference numerals and detailed description thereof will be omitted). 1
The bead 17 is provided at 0. That is, in the second embodiment, two streaky reinforcing beads 17 are provided to reinforce the connecting portion between the second vertical side portion 13 and the first short side portion 14. By providing this bead 17, even when the second vertical side portion 13 and the first short side portion 14 are bent to be substantially parallel to each other when the fastener 10 is attached, this connecting portion is Almost no cracks occur.

Further, such a reinforcing bead includes not only the bead 17 but also a connecting portion between the first vertical side portion 12 and the second vertical side portion 13 and a first short side portion as indicated by a chain double-dashed line. It may also be provided at the connecting portion between 14 and the second short side portion 15. These beads may be provided in a portion that needs to be reinforced in the connecting portion, and may be provided only in one place of the connecting portion or in a plurality of places. Further, such beads may be continuously provided. For example, a bead may be continuously provided at the connecting portion between the second vertical side portion 13 and the first short side portion 14 and the connecting portion between the first short side portion 14 and the second short side portion 15.

When the reinforcing beads are provided as described above,
Since the strength of the fastener is significantly improved, the durability of the fastener is significantly improved. In particular, even when it is used as a fastener for a sound insulating plate of a soundproof wall, it is suitable for use in a region where the natural environment is severe, or in a place where there is a lot of traffic and is easily affected by traveling vibration.

When the bead 17 is provided at the connecting portion between the second vertical side portion 13 and the first short side portion 14, the contact area between the connecting portion and the side surface of the groove portion 3 becomes small, so that both of them are The relative movement between them becomes smooth, and the insertion work during mounting is easy to perform.

Further, as shown by the chain double-dashed line in FIG. 2, the bead 18 may be provided not on the connecting portion but on the first vertical side portion 12 itself. The bead 18 can increase the strength of the first vertical side portion 12, and can strengthen the deformation resistance of the first vertical side portion 12 when contacting the second short side portion 15. In addition, since the contact area between the second short side portion and the first vertical side portion 12 is small, the relative movement is smooth, and the fastener 10 is easily tapped. In addition, when the first vertical side portion 12 is tapped and the fastener 10 is mounted, the first vertical side portion 12 descends and the second short side portion 15 relatively rises, so-called mutual movement is performed. However, this movement is performed smoothly. Moreover, even when the first vertical side portion 12 is hit from above, the first vertical side portion 12 has a high strength, and therefore the first vertical side portion 12 is easily deformed without being deformed.

The beads 17 and 18 described above may be formed so as to protrude outward or may be formed so as to protrude inward. The shape of the bead is not limited to the two streaks described above, and may be one streak or three or more streaks. Further, the flat surface may be a stepped one instead of the streak shape.

In the above embodiment, the first vertical side portion and the second vertical side portion have a substantially linear shape from the upper end portion to the lower end portion, but the shape is not limited to this, and for example, the upper end portion can be used. In the vicinity of the portion, another flat portion may be provided which comes into flat contact with the side surface portion of the panel or the groove portion when mounted in the gap. In this case, either one of the first vertical side portion and the second vertical side portion may be provided on both sides. Further, the first vertical side portion and the second vertical side portion may have a smooth curved shape, and may be connected to each other by a gentle curved line.

In the above embodiment, the fastener 10 is provided with the gap S.
When the second vertical side portion 13 is in contact with the groove portion 3 and the second short side portion 15 is in contact with the first vertical side portion 12, the second vertical side portion 13 is in substantially the same horizontal height position. Second short side portion 15
The portion where the first vertical side portion 12 contacts is the second vertical side portion 1
It may be provided so as to be located above the portion where the groove 3 is in contact with the groove 3. In this structure, when the fastener 10 is struck, the relative movement between the second short side portion 15 and the first vertical side portion 12 is performed smoothly, so that the fastener 10 can be struck with a relatively light force.

In the above embodiment, the fastener for supporting the sound insulation plate of the soundproof wall has been described. However, the present invention is not limited to this application, and a panel-like member using a spring restoring force Other applications can be applied as long as they are supported by the above. For example, it is also applied to the mounting structure of exterior plates (or decorative plates) mounted on the outside of soundproof walls, the panel mounting structure of the median strip of roads, the interior plate mounting structure of tunnels, the panel mounting structure of prefabricated houses, etc. it can.

[0041]

As described above, in the present invention, the fastener is connected to the first vertical side portion and the lower end portion of the first vertical side portion so as to face the first vertical side portion and A second vertical side portion that extends in a substantially vertical direction such that a horizontal distance from the first vertical side portion increases toward the upper side, and an upper end portion of the second vertical side portion abuts a side surface of the groove portion when mounted in the gap; A first short side portion connected to the upper end of the second vertical side portion and extending downward from the upper end portion toward the first vertical side portion, and a lower end portion of the first short side portion. A second short side portion connected to the lower end portion and extending toward the upper side on the side of the first vertical side portion, and when the fastener is mounted in the gap between the groove portion and the panel, The first
The distance between the vertical side portion and the second vertical side portion, the distance between the second vertical side portion and the first short side portion, and the distance between the first short side portion and the second short side portion are reduced, and Since the panel is held in the groove portion by the restoring force, the bending direction at the time of molding is the same as the narrowing direction at the time of mounting, and the durability at these portions is significantly improved.

The columns are erected at a predetermined interval, and the groove portions are formed on the facing surfaces of a pair of columns adjacent to each other. The channels are U-shaped grooves extending in the lengthwise direction of the columns, and the panels face each other. A sound insulation plate fitted between the U-shaped grooves in cross section and having a thickness smaller than the groove width of the U-shaped groove in cross section, and the fastener is formed between the sound insulation plate and one side surface of the U-shaped groove in cross section. In the case of a leaf spring type panel fastener that is installed in a gap and presses the sound insulating plate against the other side of the U-shaped groove by elastic restoring force, it is effective for soundproof walls installed on roads, etc. Can be utilized. Especially in soundproof walls, due to the effects of natural phenomena and wind pressure and vibrations received from traveling vehicles, rattling of the gap between the sound insulating plate and the groove and vibration of the sound insulating plate are severe, and it is used under severe conditions. The metal fitting has excellent durability and can sufficiently exert and withstand even the above-mentioned severe use conditions.

A connecting portion between the first vertical side portion and the second vertical side portion, a connecting portion between the second vertical side portion and the first short side portion, and a connecting portion between the first short side portion and the second short side portion. However, if all of them are connected by a smooth curve, it is possible to reduce the concentration of stress on these connection portions, and it is possible to dramatically reduce the possibility of damage such as fatigue and cracks.

A connecting portion between the first vertical side portion and the second vertical side portion, a connecting portion between the second vertical side portion and the first short side portion, and a connecting portion between the first short side portion and the second short side portion. In the case where the first bead is provided in at least one position, the strength of these connecting portions is reinforced, so that the life is remarkably improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a soundproof wall provided with a sound insulation plate fastener according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view showing details of a sound insulation plate fastening member according to the first embodiment of the present invention.

FIG. 4 is a side view of the sound insulation plate fastener of FIG.

FIG. 5 is a view similar to FIG. 3 related to the second embodiment.

FIG. 6 is a diagram illustrating a test state of a conventional fastener.

FIG. 7 is a diagram illustrating a test state of the fastener according to the first embodiment of the present invention.

[Explanation of symbols]

1 sound barrier 2 props 3 groove 4 sound insulation board S gap 10 fasteners 12 First vertical side 13 Second vertical side 14 First short side 15 Second short side 16 Third short side 17 First Bead 18 Second Bead

Claims (8)

[Claims] 1. A panel body comprising a rectangular panel and a column having a groove for supporting an edge portion of the panel, the groove and the panel when the panel is inserted into the groove of the column. Is a leaf spring type fastener which is mounted in a gap with the end edge portion of the panel and presses the panel into the groove by an elastic restoring force, which extends in a substantially vertical direction, and is attached in the gap in the thickness direction. One surface is connected to a first vertical side portion that abuts on the surface on the side of the gap in the thickness direction of the panel and a lower end portion of the first vertical side portion, and faces the first vertical side portion and A second vertical side portion that extends in a substantially vertical direction such that a horizontal distance from the first vertical side portion increases toward the upper side, and an upper end portion of the second vertical side portion abuts a side surface of the groove portion when mounted in the gap; Is connected to the upper end of the second vertical side, and is directed downward from the upper end toward the first vertical side. The first short side portion which has been extended is connected to a lower end portion of the first short side portion, and the first lower side portion is connected to the first short side portion.
A second short side portion that extends toward the upper side on the vertical side portion side, and when the fastener is mounted in the gap between the groove portion and the panel, the first vertical side portion and the second vertical side portion are provided. The distance from the side, the second
A space between the vertical side portion and the first short side portion and a space between the first short side portion and the second short side portion are narrowed, and the panel is retained in the groove portion by their restoring force. Panel fasteners to be used. 2. The panel fastener according to claim 1, wherein the columns are erected at a predetermined interval, and the grooves are formed on the facing surfaces of the pair of columns adjacent to each other, and the length of the columns is Is a groove having a U-shaped cross section extending in the direction, the panel is fitted between the U-shaped grooves facing each other, and a sound insulating plate having a thickness smaller than the groove width of the U-shaped groove having a cross section, The fastener is mounted in a gap between the sound insulating plate and one side surface of the U-shaped groove in cross section, and is of a leaf spring type panel for pressing the sound insulating plate to the other side surface of the U-shaped groove in cross section by elastic restoring force. It is characterized by being a fastener. 3. The panel fastener according to claim 1, wherein, when the fastener is attached, an end portion of the second short side portion on the side of the first vertical side portion contacts the first vertical side portion. And a position where the second vertical side portion comes into contact with the support column are arranged so as to be close to each other in the vertical direction. 4. The panel fastener according to claim 1, wherein the first vertical side portion and the second vertical side portion are connected to each other, the second vertical side portion and the first vertical side portion are connected to each other. The connecting portion with the short side portion and the connecting portion with the first short side portion and the second short side portion are both connected by a smooth curve. 5. The panel fastener according to any one of claims 1 to 4, wherein the second short side portion is connected to the first vertical side portion side end portion of the second short side portion, and It is characterized by including a third short side portion extending upward. 6. The fastener for a panel according to claim 1, wherein the first vertical side portion and the second vertical side portion are connected to each other, the second vertical side portion and the first vertical side portion are connected to each other. The first bead is provided at least at one location of the connecting portion with the short side portion and the connecting portion with the first short side portion and the second short side portion. 7. The fastener for a panel according to claim 6, wherein the first bead is provided in a vertical strip shape on both sides in the width direction of the fastener. 8. The fastener for a panel according to claim 1, wherein the second vertical portion is the second vertical portion.
A second bead is provided at a portion where the short side portion contacts.