JP4997505B2 - Sound barrier insulation for sound barrier - Google Patents

Description

The present invention relates to a leaf spring type sound insulation plate fastener for fixing a sound insulation plate in a sound insulation wall.

In general, soundproof walls provided on both sides of an automobile road are formed on a plurality of support columns erected at a predetermined interval and opposed surfaces of a pair of adjacent columns, and extend in the length direction of the columns. A U-shaped groove, and a sound insulating plate fitted between the opposed U-shaped grooves and set to have a thickness smaller than the groove width of the U-shaped groove.
A leaf spring type sound insulating plate fastener is attached to a gap between the sound insulating plate and one side surface of the U-shaped groove in cross section, and the sound insulating plate is attached to the other side of the U-shaped groove in cross section by the elastic restoring force of the fastener. It is pressed and fixed to the side surface. (Patent Document 1)

The fastener shown in Patent Document 1 extends substantially in the vertical direction, and when mounted in the gap, the first vertical side in which one surface in the thickness direction contacts the surface on the gap side in the thickness direction of the sound insulating plate When the fastener is attached to the gap, the horizontal distance between the first portion and the first vertical side portion is increased so that the horizontal distance between the first vertical side portion and the first vertical side portion increases. An upper end portion on the opposite side surface to the first vertical side portion includes a second vertical side portion that abuts on one side surface of the U-shaped groove. Between the first vertical side and the second vertical side, a first horizontal side connected to the upper end of the second vertical side and extending from the upper end toward the first vertical side. A second horizontal side portion connected to the first vertical side portion side end portion of the first horizontal side portion and extending from the end portion toward the second vertical side portion side and downward. A second horizontal side portion connected to the second vertical side portion end portion of the two horizontal side portions, and a third horizontal side portion extending from the end portion toward the first vertical side portion side and upward, and the first horizontal side portion; The connecting portion with the second horizontal side portion is formed so as to contact the inner surface of the first vertical side portion, and the connecting portion between the second horizontal side portion and the third horizontal side portion is in contact with the inner surface of the second vertical side portion. It is formed to slide. In the fastener of Patent Document 1, the horizontal distance between the lower ends of the first vertical side and the second vertical side is set to be smaller than the gap, while the horizontal distance between the upper ends is the gap. The lower end of the first vertical side and the second vertical side of the fastener is inserted into the gap, and the first vertical side is struck with a hammer or the like from above. And the upper end of the second vertical side are bent toward each other and inserted into the gap between the sound insulating plate and the U-shaped groove in cross section.

In the clasp of the above-mentioned patent document 1, when it is inserted into the gap between the groove portion of the column of the soundproof wall and the edge portion of the sound insulation plate, the upper ends of the first vertical side portion and the second vertical side portion are narrowed. The connecting portion between the first horizontal side and the second horizontal side contacts the inner surface of the first vertical side, and the connecting portion between the second horizontal side and the third horizontal side contacts the inner surface of the second vertical side. To do. Further, as the distance between the first vertical side portion and the second vertical side portion is narrowed, both connecting portions are required to slide downward while contacting the inner surfaces of the first vertical side portion and the second vertical side portion, respectively. The However, in the connection part, when the fastener is inserted into the gap and the distance between the two vertical side parts is narrowed, the contact resistance increases from the moment of contact with the inner surface of the vertical side part. Hateful. Actually, the direction when both vertical sides are narrowed is substantially horizontal (or slightly obliquely downward), whereas the direction in which the connecting part slides is substantially vertical, and the action of the sliding direction The force is too small to get a sliding force. Usually, when the fastener is inserted, the first lateral side portion is struck down, so that the connection portion between the first lateral side portion and the second lateral side portion is in contact with the inner surface of the first vertical side portion while being downward. Forcibly pushed down and slips. However, at the connecting portion between the second lateral portion and the third lateral portion, there is no such forced downward acting force, and it often occurs that the connecting portion does not slip. In some cases, a strange force is applied to the second vertical side portion and deforms to weaken the spring force. In an extreme case, the second vertical side portion may be partially damaged.

In the fastener of Patent Document 1, with respect to the straight line connecting the connection portions of the first horizontal side portion and the second horizontal side portion, the connection portions of the second horizontal side portion and the third horizontal side portion, The longitudinal direction of the second lateral side portion is inclined downward. Therefore, when the fastener is attached, if the distance between the first vertical side portion and the second vertical side portion is suddenly narrowed, the center is downwardly convex (upper concave) even if the second horizontal side portion is deformed. Transforms into As a result, the angle of the connecting portion between the first lateral side and the second lateral side (that is, the angle between the first lateral side and the second lateral side) becomes wider than the initial state, resulting in a smooth curve. So it becomes slippery. However, the connecting portion between the first horizontal side portion and the second horizontal side portion becomes slippery with respect to the inner surface of the first vertical side portion, and the connecting portion between the second horizontal side portion and the third horizontal side portion is , It is still in a state where it is difficult to slip with respect to the inner surface of the second lateral side portion. Therefore, also in this Patent Document 2, the first vertical side portion and the second vertical side portion are forcibly made in a state where the connecting portion between the second horizontal side portion and the third horizontal side portion does not slide on the inner surface of the second vertical side portion. The interval between and will be narrowed. As a result, the second lateral side is buckled and the elastic restoring force is lost.

In particular, recently, a stainless steel plate has been used as a material for the fastener, instead of a normal steel material. In the case of a normal steel plate, the surface was subjected to a rust prevention treatment such as galvanization, so that it was relatively slippery when in contact with each other. However, this stainless steel plate is often used as it is without being plated as described above. In that case, it is relatively difficult to slip when in contact with each other, and the above problem is greatly highlighted. It is supposed to be.

When the sound insulation plate fastener is inserted into the sound insulation wall gap with respect to the sound insulation plate fastener of the sound insulation wall as described above, the connection portion between the second lateral portion and the third lateral portion is the second vertical portion. Also known is a structure that smoothly contacts the inner surface of the side and slides down. (Patent Document 2)

JP 2002-194715 A JP 2002-194715 A

In the thing of patent document 2, the slip is improved compared with patent document 1 grade | etc., And it is put to practical use. Recently, a sound insulating plate made of a synthetic resin such as a translucent plate has come out, and the weight is reduced. In addition, the length of the sound insulation plate itself is increased, and the space between the support columns to which the sound insulation plate is fitted is increased, so that the number of support posts and the number of fasteners is reduced, and the cost is reduced. There is a demand to reduce the assembly man-hours.
In order to use such a large sound insulation board, the fasteners of Patent Documents 1 and 2 have insufficient load resistance, and it is necessary to double the load bearing force applied to the fasteners. ing. In simple terms, it is conceivable to increase the thickness of the fastener to increase the load resistance, but this has the problem of increasing costs and weight.
Therefore, an object of the present invention is to significantly improve the load resistance by devising the shape of the fastener, using the current fastener as much as possible without changing the thickness of the fastener.

In order to achieve the above object, the invention according to claim 1 is a soundproof wall comprising a rectangular sound insulating plate and a column having a groove portion that supports an edge of the sound insulating plate. A leaf spring type fastener that is attached to the gap between the groove and the edge of the sound insulation plate when inserted into the groove of the column and presses the sound insulation plate against the groove by elastic restoring force, A first vertical side portion that extends in the vertical direction and has one surface in the thickness direction contacting the surface in the thickness direction of the sound insulating plate when mounted in the gap; and the first vertical side portion, The upper end of the side surface opposite to the first vertical side portion in the thickness direction when extending in a substantially vertical direction so that the horizontal distance between the first vertical side portion and the first vertical side portion increases toward the upper side. A second vertical side portion that comes into contact with one side surface of the U-shaped groove, and an upper end portion of the second vertical side portion. Connected to the first horizontal side portion extending from the upper end portion toward the first vertical side portion side and the first vertical side portion side end portion of the first horizontal side portion, and from the end portion to the first vertical side portion side. Connected to the second vertical side part of the second horizontal side part and the second vertical side part of the second horizontal side part, and from the end part to the first vertical side part side And a third contact portion extending upward, and a connecting portion between the first and second lateral sides can contact the inner surface of the first vertical side portion. And a second contact portion that can contact the inner surface of the second vertical side portion is formed between the connection portion between the second horizontal side portion and the third horizontal side portion and the third horizontal side portion. And
A protruding wall portion comprising an inclined wall surface formed to protrude obliquely downward from the inner surface of the second vertical side portion at a position lower than the position where the second contact portion contacts the inner surface of the second vertical side portion. Prepared,
After the second contact portion comes into contact with the inner surface of the second vertical side portion and slides downward, the second contact portion comes into contact with the inclined wall surface and stops.

According to a second aspect of the present invention, in the sound insulating plate clasp of the soundproof wall according to the first aspect, the protruding wall portion is integrally formed by deforming by projecting a part of the second vertical side portion inward. It is characterized by being.

According to a third aspect of the present invention, in the sound insulation plate fastener of the soundproof wall according to the first or second aspect, an imaginary line connecting the first contact portion and the second contact portion is a longitudinal direction of the second lateral side portion. A first deforming portion that protrudes inwardly on the second vertical side portion at a position above the projecting wall portion is formed at a lower end portion of the first deforming portion. A first inclined surface formed obliquely upward from the inner surface of the second vertical side portion toward the first top of the first deformable portion, wherein the second contact portion contacts the inner surface of the second vertical side portion; Initially, the first inclined surface is contacted and slips downward, the lower position of the first inclined surface is in direct contact with the inner surface of the second vertical side, and then the inclined wall surface is stopped. It is formed.

According to a fourth aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to the third aspect, the first deforming portion is directed in the lengthwise direction of the second vertical side portion at the center portion in the width direction of the second vertical side portion. It is provided in a long bead shape.

According to a fifth aspect of the present invention, in the sound insulating plate fastener for a soundproof wall according to the fourth aspect, a part of the first deforming portion is cut out to form a retaining protrusion.

The invention of claim 6 is the sound insulation plate fastener of the sound insulation wall according to claim 1, wherein the protruding wall portion is formed by a stopper portion formed by cutting out a part of the second vertical side portion and bending it. The stopper portion has a spring-like restoring force.

The invention according to claim 7 is the sound insulation plate fastener of the soundproof wall according to claim 6, wherein the third horizontal side portion is on the second vertical side portion side and the upper side from the end portion of the second horizontal side portion. A first short side portion extending toward the second short side portion and an end portion on the second vertical side portion side of the first short side portion, and a second short side extending from the end portion toward the first vertical side portion and upward. A third short side portion connected to the first vertical side portion side end portion of the second short side portion and extending from the end portion toward the second vertical side portion side and the upper side; A first short side portion including a fourth short side portion connected to the second vertical side portion side end portion of the three short side portions and extending from the end portion toward the first vertical side portion side and upward. Is configured to slide in contact with the inner surface of the second vertical side, and the connecting portion between the third short side and the fourth short side contacts the inner surface of the second vertical side and slides. The first short side is in contact with the stopper. Characterized in that it is configured to be stopped by.

According to an eighth aspect of the present invention, in the sound insulating plate fastener of the sound barrier according to the sixth or seventh aspect, a second deformed portion that protrudes inward is formed on the second vertical side portion in a bead shape. It is formed extending in the longitudinal direction of the vertical side portion, and is formed on the upper end portion of the second deformable portion obliquely downward from the inner surface of the second vertical side portion toward the second top portion direction of the second protruding portion. A second inclined surface, and a connecting portion between the third short side portion and the fourth short side portion is configured to come into contact with the second inclined surface and slide toward the second vertical side portion; An upper surface on which the first short side portion comes into surface contact and slides is formed at the second top portion of the portion.

According to a ninth aspect of the present invention, in the sound insulating plate fastener for a soundproof wall according to the eighth aspect, the protruding wall portion is formed to protrude further inward from the second deformable portion.

According to a tenth aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to the eighth or ninth aspect, the second vertical side portion is notched from the second vertical side portion at a position above the second deformable portion. And a tip having a retaining protrusion capable of contacting the inner surface of the soundproof wall.

According to an eleventh aspect of the present invention, in the soundproof plate fastener of the soundproof wall according to any one of the first to tenth aspects, the first reinforcing bead continuous from the first lateral side portion to the second lateral side portion has a width. It is provided in the central portion in the direction.

According to a twelfth aspect of the present invention, in the sound insulating plate fastener of the sound barrier according to the eleventh aspect, the second reinforcing bead is disposed at both widthwise end portions of the first lateral side portion, and the widthwise both end portions of the second lateral side portion are Each of the three reinforcing beads is provided.

A thirteenth aspect of the present invention is the sound insulation plate fastener of the soundproof wall according to any one of the first to twelfth aspects, wherein the engagement is detachable between the first vertical side portion and the first horizontal side portion. And when the first vertical side portion and the first horizontal side portion are engaged by the engaging portion, the horizontal distance between the upper ends of the first vertical side portion and the second vertical side portion is It is configured to be smaller than that at the time of non-engagement.

The invention according to claim 14 is the sound insulation plate fastener of the soundproof wall according to claim 13, wherein the engaging portion is formed by cutting and raising from the first vertical side portion, and the first horizontal side portion. And a second cut-and-raised portion formed by cutting and raising, and the first cut-and-raised portion and the second cut-and-raised portion are formed to be detachable.

According to a fifteenth aspect of the present invention, in the soundproof plate fastener of the soundproof wall according to the fourteenth aspect, the first cut-and-raised portion and the second cut-and-raised portion are both formed by forcing one cut-off portion vertically. The engagement is released.

According to the first aspect of the present invention, the lower portion of the first vertical side portion and the second vertical side portion of the fastener is inserted into the gap when the fitting is installed in the gap between the sound insulation plate of the soundproof wall of the fastener and the column. When the insertion is further forced, the first contact portion comes into contact with the inner surface of the first vertical side portion, the second contact portion comes into contact with the inner surface of the second vertical side portion, and further insertion, The interval between the first vertical side portion and the second vertical side portion is narrowed. At that time, since the first contact portion is forced into the first lateral side portion and a downward force is applied, the inner surface of the first vertical side portion can smoothly slide downward. . Further, the second contact portion smoothly slides downward on the inner surface of the second vertical side portion, and the second contact portion comes into contact with the inclined wall surface of the protruding wall portion, so that the second contact portion stops in this state. Since the fastener is shrunk and elastically held in the groove, a restoring force for returning to the original is strong and a strong compression load is obtained.
In particular, around the end of insertion when the fastener is inserted into the groove portion, conventionally, the second contact portion slides in contact with the inner surface of the second vertical side portion, so that it slides smoothly, but the load during compression is not large, The elastic restoring force was not strong. However, in the invention of claim 1, since it is necessary to slide on the inclined wall portion of the protruding wall portion after the second contact portion slides in contact with the inner surface of the second vertical side portion at the same time, In comparison, the compressive force that shrinks the fasteners is stronger, that is, the elastic restoring force can be stronger than in the prior art. Therefore, the compression load resistance (or elastic restoring force) of the fastener can be strengthened, so that the required strength as a fastener is ensured even if the length of the soundproof plate is increased and the spacing between the columns is widened. It is excellent in that it can

In the invention of claim 2, since the protruding wall portion is formed integrally with the second vertical side portion, the deformation resistance of the protruding wall portion is excellent.

In the invention of claim 3, it is easy to obtain a sliding force when the second contact portion comes into contact with the first inclined surface of the first deforming portion, and the transition to the inner surface of the second vertical side portion is smooth, and the sliding Very low resistance.

In invention of Claim 4, since the movement of the 2nd contact part from the 1st inclined surface of the 1st deformation part to the inner surface of the 2nd vertical side part can be performed gently, even if it moves to the inner surface of the 2nd vertical side part, The second contact portion can slide smoothly.

In the invention of claim 5, it is possible to reliably prevent the fastener from coming out of the gap due to vibration or the like. In particular, since the strength of the retaining protrusion can be improved, it is possible to more reliably prevent the fastener from coming out of the gap due to vibration or the like.

In the invention of claim 6, since the second contact portion comes into contact with the stopper portion of the protruding wall portion and stops, in this state, the fastener is shrunk and elastically held in the groove portion. Thus, a strong restoring force is obtained and a strong compression load is obtained.
In particular, since the stopper portion has an elastic force, an excessive load can be prevented and the elastic restoring force can be increased. Therefore, the compression load resistance (or elastic restoring force) of the fastener can be strengthened, so that the required strength as a fastener is ensured even if the length of the soundproof plate is increased and the spacing between the columns is widened. It is excellent in that it can

In the seventh aspect of the present invention, when the sound insulation plate fastener is inserted into the clearance of the soundproof wall, one of the end portion of the first short side portion, the connection portion of the third short side portion and the fourth short side portion is The other side is in contact with the inner surface of the second vertical side and the other side is in a floating state, and then both the connecting portion of the third short side and the fourth short side and the first short side are on the inner surface of the second vertical side. Since it can slide in contact, at the initial insertion timing, one of the end of the first short side and the connecting portion of the third short side and the fourth short side is light contact and the second vertical side Can slide on the inner surface of the part, and then slide while maintaining sufficient spring force at both the end of the first short side and the connecting part of the third short side and the fourth short side. I can do it. In the late stage of insertion, the first short side portion comes into contact with the stopper portion and stops, so that the compression load of the fastener is maintained high and the elastic restoring force can be kept high.

In the invention according to claim 8, when the sound insulating plate fastener is inserted into the clearance of the soundproof wall, the connecting portion between the third short side portion and the fourth short side portion is an inclined surface formed on the second vertical side portion. As a result, the acting force acting in the sliding direction increases, the frictional resistance force at the initial contact is reduced, and smooth sliding can be achieved.

In the invention of claim 9, since the second contact portion can move while smoothly contacting the stopper portion from the second deformable portion, the insertion of the fastener is smooth, and the elastic restoring force also acts smoothly.

In the invention of claim 10, it is possible to reliably prevent the fastener from coming out of the gap due to vibration or the like.

In invention of Claim 11, the intensity | strength of a 1st side part and a 2nd side part can be improved, a plastic deformation (inelastic deformation) can be prevented, and the elastic restoring force of a fastener can fully be ensured.

In invention of Claim 12, the intensity | strength of a 1st side part and a 2nd side part can be improved further highly, a plastic deformation (inelastic deformation) can be prevented reliably, and the elastic restoring force of a fastener is made still stronger. It can be secured.

In the invention of claim 13, when the first vertical side and the first horizontal side are engaged by the engaging portion, the horizontal distance between the upper ends of the first vertical side and the second vertical side is set. The gap amount between the sound insulating plate and one side surface of the U-shaped groove in the cross section can be made substantially the same or smaller than the gap amount.
As a result, the operator only has to release the above-mentioned engagement by inserting a previously engaged fastener into the gap, and even a weak operator can easily and smoothly remove the fastener. In addition, it is possible to prevent the generation of a loud sound during the mounting operation and the breakage of the fastener.

In the invention of claim 14, the engaging portion can be formed at low cost. In addition, since this engagement portion is not additionally provided, the engagement portion is provided without increasing the weight and is excellent in workability.

According to the fifteenth aspect of the present invention, after the fastener is inserted into the clearance between the soundproof walls, the engaging portion can be easily released, and the release workability is excellent.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
1 to 6 relate to Embodiment 1 of the present invention and show an example in which a fastener is applied to a sound insulating plate of a soundproof wall. As shown in FIG. 1, a soundproof wall 1 provided with a fastener 10 is shown, and the soundproof wall 1 is predetermined in a direction along the automobile road on both sides of the automobile road (a direction perpendicular to the paper surface of FIG. 1). A plurality of support columns 2, 2,... Each of the columns 2 is made of H-shaped steel, and has two groove portions 3 and 3 having a U-shaped cross section extending in the length direction of the column 2, and the openings of the grooves 3 are along the automobile road. It is erected so as to face the direction (the length direction of the soundproof wall 1). That is, each groove part 3 is formed in the opposing surface of a pair of adjacent support | pillars 2 and 2 mutually.

A plurality of sound insulating plates 4, 4,... Extending in the direction along the automobile road are fitted between the opposing groove portions 3 and 3 on the opposing surfaces of the pair of support columns 2 and 2 while being stacked in the vertical direction. ing. Each of the sound insulating plates 4 is made of a plastic such as polycarbonate or a box type made of iron, aluminum, concrete, or the like, and the thickness t is set smaller than the groove width W of the groove portion 3. In addition, the metal exterior board (not shown) is affixed and fixed to the side surface opposite to the motor vehicle of each support | pillar 2.

In the gap (gap amount S = W−t) between each sound insulating plate 4 and each side of the groove 3 opposite to the motor road, the sound insulating plate 4 is placed on the side of the groove 3 on the side of the motor road by elastic restoring force. A leaf spring type sound insulation plate fastener 10 that is pressed and made of spring steel or the like is mounted. The fastener 10 is provided at the upper end of each end portion in the length direction of each of the sound insulation plates 4, and the upper end portion of the side surface (the gap side surface) opposite to the automobile road in the thickness direction of the sound insulation plate 4 is the automobile road side. It is comprised so that it may press. In addition, a stepped portion 4a that is recessed downward is formed on the side of the automobile road at the upper end of each of the sound insulation plates 4, and this sound insulation is provided between the stepped portion 4a and the side surface of the groove 3 on the side of the automobile road. The convex part 4b provided in the lower end part of the sound insulation board 4 piled up right above the board 4 is inserted, and the movement to the thickness direction of the lower end part of the sound insulation board 4 is controlled by this. It is like that.

Specifically, as shown in FIG. 3, when the fastener 10 is mounted in the gap S, the lower surface 10 of the fastener 10 comes into contact with the upper end surface of the sound insulating plate 4 and protrudes into the upper end surface. An attachment side portion 11 having a fitting hole 11a that is substantially fitted to the provided circular fitting portion 4c (see FIG. 1) is provided. An upper end portion of the first vertical side portion 12 extending substantially in the vertical direction is connected to the end portion of the attachment side portion 11 opposite to the automobile road. The side surface of the automobile road in the thickness direction of the first vertical side portion 12 comes to substantially abut against the side surface of the gap in the thickness direction of the sound insulating plate 4 when the fastener 10 is mounted in the gap. ing.

At the lower end portion of the first vertical side portion 12, a second vertical length that extends substantially in the vertical direction is opposed to the first vertical side portion 12 and the horizontal distance from the first vertical side portion 12 increases upward. A lower end portion of the side portion 13 is connected by a connecting side portion 19. The length of the connecting side portion 19 is formed slightly smaller than the interval s of the gap S so that it can be easily inserted into the gap S. The upper end of the side opposite to the first vertical side 12 (the side opposite to the automobile road) in the thickness direction of the second vertical side 13 is the automobile of the groove 3 when the fastener 10 is mounted in the gap. It comes in contact with the side opposite to the road.

Connected to the upper end portion of the second vertical side portion 13 is a first horizontal side portion 14 extending from the upper end portion to the first vertical side portion 12 side and downward to substantially the vicinity of the first vertical side portion 12. ing. The first vertical side portion 12 side end portion (lower end portion) of the first horizontal side portion 14 is substantially the second vertical side portion 13 from the end portion toward the second vertical side portion 13 side and downward. A second lateral side portion 15 extending to the vicinity is connected. A third horizontal side portion 16 extending from the end portion toward the first vertical side portion 12 side and upward is connected to the end portion of the second horizontal side portion 15 on the second vertical side portion 13 side. . A connecting portion between the first horizontal side portion 14 and the second horizontal side portion 15 is provided with a first contact portion 17 having a substantially arc-shaped cross section that can come into contact with the inner surface of the first vertical side portion 12. A connecting portion between the horizontal side portion 15 and the third horizontal side portion 16 is provided with a second contact portion 18 having a substantially arc-shaped cross section that can contact the inner surface of the second vertical side portion 13. The first contact portion 17 and the second contact portion 18 are formed in a smooth cross-sectional substantially arc shape. Since the second contact portion 18 is formed at a portion bent upward from the lower end of the third lateral side portion 16, an imaginary line connecting the first contact portion 17 and the second contact portion 18 is formed on the second lateral side. It is located above the straight line in the longitudinal direction of the part 15.

A bead-shaped first deformable portion 31 that protrudes inward (in the direction of the first vertical side portion 12) is formed on the second vertical side portion 13. The upper surface (first top portion) 33 of the first deformable portion 31 is formed in a planar shape. A first inclined surface 32 is formed in a diagonally downward direction from the lower end portion of the upper surface 33 toward the inner surface of the second vertical side portion 13.

  A protruding wall portion 20 is formed at a position lower than the first deformation portion 31 of the second vertical side portion 13 toward the inside (in the direction of the first vertical side portion 12). The protruding wall portion 20 is formed with an inclined wall portion 21 that protrudes greatly toward the inside (in the direction of the first vertical side portion 12) gradually downward. The inclined wall portion 21 is smoothly and integrally connected to the inner surface of the second vertical side portion 13, and is inclined.

At a substantially intermediate position in the vertical direction of the second vertical side portion 13, a part of the first deformation portion 31 in the width direction is formed by notching, and a retaining protrusion 40 whose tip can contact the inner surface of the groove portion 3 of the column 2. Is provided. The retaining projection 40 prevents the fastener 10 from coming out of the gap S due to vibration or the like.

A first reinforcing bead portion 44 is provided at the central portion in the width direction of the first lateral side portion 14 and the second lateral side portion 15 so as to protrude inward substantially over the entire length direction. The first reinforcing bead portion 44 is also formed to continuously protrude toward the outside with the same width on the first contact portion 17 between the first lateral side portion 14 and the second lateral side portion 15. The strength of the first lateral side portion 14, the second lateral side portion 15 and the first contact portion 17 is increased.

Specifically, the situation when the fastener 10 is inserted into the gap S will be described. In the first embodiment, as shown in FIG. 4, the fastener 10 is in a free state, the first contact portion 17 does not contact the inner surface of the first vertical side portion 12, and the second contact portion 18 also has the second vertical length. This is an example of using a state floating from the inner surface of the side portion 13. When the fastener 10 is inserted into the gap S and the first horizontal side portion 14 is hit with a hammer or the like and further inserted into the back, the distance between the first vertical side portion 12 and the second vertical side portion 13 becomes narrower. First, the first contact portion 17 slides downward while contacting the inner surface of the first vertical side portion 12. Accordingly, as shown in FIG. 5, the second contact portion 18 comes into contact with the first inclined surface 32 of the first deformable portion 31 and slides downward on the first inclined surface 32. And it moves to the inner surface of the 2nd vertical side part 13, and slides. After that, in the final stage where the insertion is further completed and the fastener 10 is completely inserted into the groove portion 3, the second contact portion 18 moves from the inner surface of the second vertical side portion 13 to the inclined surface 21 of the protruding wall portion 20, and this It rides on the inclined surface 21. As a result, the second contact portion 18 rides on the inclined surface 21 of the protruding wall portion 20 narrowed further inside than the second vertical side portion 13, so that the compression load of the fastener 10 increases. As a result, the restoring force of the fastener 10 is strengthened.

When the fastener 10 is inserted into the gap S and the distance between the first vertical side portion 12 and the second vertical side portion 13 is narrowed, the second horizontal side portion 15 is basically not deformed. Slightly elastically deformed and curved. In this case, since the longitudinal direction of the second lateral side portion 15 is located below the virtual line connecting the first contact portion 17 and the second contact portion 18, the second lateral side portion 15 is elastically deformed. When it does, it swells downward and deforms. As a result, the angle between the first lateral side portion 14 and the second lateral side portion 15 increases, and the curvature of the first contact portion 17 decreases, so that the first contact portion 17 becomes slippery and buckles. Deformation and cracking are less likely to occur.

(Embodiment 2)
6 and 7 relate to the second embodiment of the present invention and show an example in which a fastener is applied to a sound insulation plate of a sound insulation wall. In the second embodiment, common parts with the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different parts are described.
Specifically, the clasp 50 has a wider interval between the first vertical side portion 12 and the second vertical side portion 13 than the clasp 10 of the first embodiment. Therefore, the structure of the third lateral side portion 16 is different. The third horizontal side portion 16 includes a first short side portion 161, a second short side portion 161, a third short side portion 163, and a fourth short side portion 164. As shown in FIGS. 6 and 7, the detailed structure of the third horizontal side portion 16 is the second vertical side portion 13 side end portion (lower end portion) of the second horizontal side portion 15. A first short side portion 161 extending to the vicinity of the second vertical side portion 13 on the vertical side portion 13 side and upward is connected. The first short side portion 161 has an end portion (upper end portion) on the second vertical side portion 13 side that extends from the end portion toward the first vertical side portion 12 side and upward, and substantially has the first short side portion and Second short sides 162 having the same length are connected. The second short side portion 162 has an end portion (upper end portion) on the first vertical side portion 12 side that extends from the end toward the second vertical side portion 13 side and upward, and substantially has the first short side portion and The third short side portion 163 having the same length is connected. The third short side 163 has an end (upper end) on the second vertical side 13 side that extends from the end toward the first vertical side 12 and upward, and has a short fourth length. The side part 164 is connected.

At a substantially intermediate position in the vertical direction of the second vertical side portion 13, a part of the second vertical side portion 13 in the width direction is formed by notching, and the tip protrusion 40 is capable of contacting the inner surface of the groove portion 3 of the support column 2. However, it is formed similarly to the first embodiment. In the second vertical side portion 13, a bead-shaped second deformable portion 34 is formed to protrude toward the inside (in the direction of the first vertical side portion 12) below the retaining projection 40. The upper surface (second top portion) 36 of the second deformable portion 34 is formed in a planar shape. A second inclined surface 35 is formed in an obliquely upward direction from the upper end portion of the upper surface 36 toward the inner surface of the second vertical side portion 13. A bead-shaped third deformable portion 37 is formed on the upper side of the retaining projection 40 so as to protrude inward (in the direction of the first vertical side portion 12), and is reinforced in strength.
Moreover, the stopper part 22 which is a protrusion wall part is formed from the 2nd deformation | transformation part 34 toward inner side (1st vertical side part 12 direction). The stopper portion 22 is formed by cutting out a part of the second deformable portion 34 of the second vertical side portion 13 and bending it inward (in the direction of the first vertical side portion 12).

A first reinforcing bead portion 44 is provided at the center in the width direction of the first lateral side portion 14 and the second lateral side portion 15 over substantially the entire length in the length direction. The first reinforcing bead portion 44 is also formed to continuously protrude toward the outside with the same width on the first contact portion 17 between the first lateral side portion 14 and the second lateral side portion 15. The strength of the first lateral side portion 14, the second lateral side portion 15 and the first contact portion 17 is increased. Further, second reinforcing beads 45 formed by bending inward are formed on both sides in the width direction of the first horizontal side portion 14, and formed by bending inward on both sides in the width direction of the second horizontal side portion 15. A third reinforcing bead 46 is formed. In the second embodiment, since the distance between the first vertical side portion 12 and the second vertical side portion 13 is wider than that in the first embodiment 1, the first horizontal side portion 14 and the second vertical side portion 14 are separated by the second reinforcing bead 45. The three reinforcing beads 46 improve the deformation resistance of the second lateral side portion 15. That is, as will be described later, when the first short side portion 161 slides on the second top portion (upper surface) of the second deformable portion 34 and further rides on the stopper portion 22, the stopper portion 22 is bent inward. Therefore, the fastener 50 is pushed in with a strong force. As a result, since a large deformation force acts on the first lateral side portion 14 and the second lateral side portion 15 as well, the second reinforcing bead 45 and the second lateral end portion 45 and the second lateral side portion 15 are prevented from being plastically deformed beyond the elastic deformation region. Three reinforcing beads 46 are provided.

Next, when the stopper 10 is inserted into the gap S, the movement from the first short side portion to the fourth vertical side portion when the distance between the first vertical side portion 12 and the second vertical side portion 13 is narrowed. This will be described with reference to FIG. The first short side portion 161 is slid in contact with the inner surface of the second vertical side portion 13, and the connection portion 165 between the third short side portion 163 and the fourth short side portion 164 is the second vertical side portion. 13 is configured to slide in contact with the inner surface of 13. The details of this contact state are the same as those described in detail in Japanese Patent Application Laid-Open No. 2005-299164, and detailed description thereof is omitted.
For the sake of brevity, the portion of the fastener 50 is simply described in FIG. When the fastener 50 is inserted, the second vertical side portion 13 is elastically deformed so as to approach the first vertical side portion 12, but in order to make the explanation easy to understand, the second vertical side portion 13 is fixed. The contact state will be described assuming that the first short side portion 16 to the fourth short side portion 19 approach the second vertical side portion. By inserting the fastener 50 into the gap S, first, as shown in FIG. 7 as the second stage B, the connecting portion 165 contacts the second inclined surface 35 of the second deformable portion 34, and this second It slides on the inclined surface 35 and moves upward. When the connection portion 165 is in the vicinity of the position where it contacts the inner surface of the second vertical side portion 13, the connection portion between the first short side portion 161 and the second short side portion 162 contacts the upper surface 36 of the second deformation portion 34. It becomes like this. Then, the connecting portion between the first short side portion 161 and the second short side portion 162 comes into contact with the upper surface 36 of the second deformable portion 34 and moves slightly so that the third stage C is shown in FIG. In addition, the connection part 165 is in a state of floating from the inner surface of the second vertical side part 13. When the fastener 50 is further inserted from this state, as shown as the fourth stage D in FIG. 7, the first short side portion in the direction in which the angle between the first short side portion 161 and the second lateral side portion 15 is narrowed. While the upper end portion of 161 is bent inward, the first short side portion 161 moves downward while contacting the upper surface 36 of the second deformable portion 34, and the first short side portion 161 is second deformed. The upper surface 36 of the part 34 comes into surface contact. At the same time, the connecting portion 165 comes into contact with the upper surface 36 of the second deformable portion 34. After that, as shown as the fifth stage E in FIG. 7, the first short side portion 161 comes into contact with the stopper 22, thereby preventing the fastener 50 from further descending. When further descending, the stopper 22 is pushed so as to approach the second vertical side portion 13. As a result, the repulsive force due to the elastic deformation of the stopper 22 acts on the first short side portion 161. As described above, the resistance and repulsive force of the stopper 22 increases the compression load of the fastener 50, and the elastic restoring force of the fastener 50 increases.

As described above, the connection portion 165 once contacts the inner surface of the second vertical side portion 13 (including the second deformable portion 34), and then the upper end portion of the first short side portion 161 contacts and the connection portion. 165 is separated, and thereafter, the first short side portion 161 is in surface contact and the connection portion 165 is in contact. Furthermore, when the first short side portion 161 is in contact with the stopper 22, the lowering of the fastener 50 is stopped. Thus, in the initial stage of inserting the fastener 50 into the gap S, the contact state can be realized so that the inner surface of the second vertical side portion 13 is brought into contact with a light force and the second half is in strong contact with the second vertical side portion 13. The inner surface (including the upper surface 36 of the second deformation portion 34) can be smoothly slid and moved, and the compression load (elastic restoring force) can be increased.

Note that the timing at which the first short side portion 161 is in surface contact with the upper surface 36 and the timing at which the connection portion 165 is in contact with the upper surface 36 are either first or simultaneous.
Moreover, although the connection part 165 floats from the inner surface of the 2nd vertical side part 13 in the 2nd step B, as long as smooth sliding is not inhibited, the state which contacted lightly may be sufficient.

When the fastener 50 is inserted into the gap S and the distance between the first vertical side portion 12 and the second vertical side portion 13 is narrowed, the second horizontal side portion 15 is basically not deformed. Often curved slightly. In this case, in the present invention, the second horizontal side portion with respect to the virtual line connecting the first contact portion 17 and the contact portion 165 and the virtual line connecting the first contact portion 17 and the upper end portion of the first short side portion 161. Since the longitudinal direction of 15 is located below, even when the second lateral side portion 15 is deformed, the result is that it swells downward and deforms. As a result, the angle between the first lateral side portion 12 and the second lateral side portion 13 increases, and the curvature of the first contact portion 17 decreases, so that the first contact portion 17 becomes slippery and buckles. Deformation and cracking are less likely to occur.
In particular, the first lateral side portion 14, the second lateral side portion 15, and the first contact portion 17 are integrally reinforced with an integral first reinforcing bead 44 to prevent a load from being concentrated suddenly somewhere. Has been. Furthermore,
A second reinforcing bead 45 is added to the first lateral side portion 14 and a third reinforcing bead 46 is added to the second lateral side portion 15 to prevent it from being bent greatly.

8 and 9 show the third embodiment, which is similar to FIGS. 3 and 4 of the first embodiment. In the third embodiment, only parts different from the first embodiment will be described, and description of common parts will be omitted. In the third embodiment, the first vertical side portion 12 and the first horizontal side portion 14 are detachable by the engaging portion 41.
The engaging portion 41 is a first cut-and-raised portion 42 formed by cutting and raising a substantially central portion in the width direction on the upper side in the longitudinal direction of the first vertical side portion 12 and a substantially intermediate position in the longitudinal direction of the first horizontal side portion 14. And a second cut-and-raised portion 43 formed by cutting and raising the substantially central portion in the width direction. The first cut-and-raised portion 42 has a plate-like engagement receiving portion 47 that is cut and raised and bent in the direction of the first lateral side portion 14. The engagement receiving portion 47 is provided with a rectangular hole 47a. The second cut-and-raised portion 43 has a base portion 48 formed by cutting and raising upward from the first lateral side portion 14 and a lip portion 49 bent upward at a substantially right angle at the tip of the base portion 48.

The horizontal distance between the upper end portions of the first vertical side portion 12 and the second vertical side portion 13 (the horizontal distance between the side surfaces opposite to the opposing surface) is the first cut and raised portion 42 and the second cut and raised portion 43. Is not engaged (free state), the distance is set to be larger than the gap amount S. On the other hand, when engaged, the distance is smaller than the non-engaged distance and slightly smaller than the gap amount S. It is set to a small distance. Even if the horizontal distance between the upper end portions of the first vertical side portion 12 and the second vertical side portion 13 is the same as or slightly larger than the gap amount S at the time of engagement, the fastener 10a is lightly applied as will be described later. If it can be mounted in a predetermined position, it may be sufficient.

A method of fixing the sound insulating plate 4 by mounting the clasp 10a configured as described above in the gap between the sound insulating plate 4 and the side surface of the U-shaped groove 3 opposite to the automobile road will be described. It should be noted that at the stage of attaching the fastener 10 a, the exterior plate 5 is not pasted and fixed to each column 2.
First, the lip portion 49 of the second cut-and-raised portion 43 is engaged with the hole 47a of the first cut-and-raised portion 42 by bending the second vertical side portion 13 of the fastener 10a in advance to the first vertical side portion 12 side. Keep it together.
This engagement may be performed by a manufacturing apparatus at the time of manufacturing the fastener 10a, or may be performed by a mounting operator using a tool. And the cross section which opposes the fitting hole 11a of the attachment side part 11 while inserting the 1st vertical side part 12 and the 2nd vertical side part 13 of the fastener 10a in the clearance gap S, hold | maintaining this state. The sound insulating plate 4 fitted between the U-shaped grooves 3 and 3 is fitted and set in the fitting portion 4c on the upper end surface. At this time, since the horizontal distance between the upper ends of the first vertical side 12 and the second vertical side 13 is slightly smaller than the gap amount S, the first vertical side 12 and the second vertical side 13 The whole from the lower end to the upper end can be easily inserted into the gap. That is, in the state where there is no engaging portion 41 as in the prior art, in order to insert the upper end portions of the first vertical side portion 12 and the second vertical side portion 13 into the gap, they are forcedly inserted by hitting with a hammer or the like from above. However, it is not necessary to perform such work at all.

At the time when the insertion is completed, between the hole 47a of the first cut-and-raised portion 42 and the lip portion 49 of the second cut-and-raised portion 43, or the lower surface of the engagement receiving portion 47 of the first cut-and-raised portion 42 and the second By inserting and turning or twisting a tool (not shown) such as a screwdriver whose tip is formed in a wedge shape between the upper surface of the base portion 48 of the cut and raised portion 43, the hole 47a and the lip The engagement with the part 49 is released.
When the engagement is released as described above, the outer side surface of the second vertical side portion 13 comes into contact with the side surface of the U-shaped groove 3 opposite to the automobile road, while the outer side surface of the first vertical side portion 12 is the sound insulating plate. 4, the sound insulating plate 4 is pressed and fixed to the side surface of the U-shaped groove 3 on the side of the automobile road, and the mounting of the fastener 10a is completed.
At this time, the tip of the retaining protrusion 40 is also brought into contact with the side surface of the U-shaped groove 3 opposite to the automobile road, thereby preventing the fastener 10a from coming off due to vibration or the like.

In the third embodiment, if the first vertical side portion 12 and the first horizontal side portion 14 are engaged with each other by the engaging portion 41 in advance, the fastener 10a can be easily inserted without using a hammer or the like. It can be inserted into the gap S, and the engagement can be easily released after the insertion. Therefore, even a worker with weak power can easily attach the fastener 10a with a simple operation, and it is possible to prevent a loud noise or breakage of the fastener 10a during the attachment operation. be able to.
This mounting operation is the same as that described in detail in Japanese Patent Application Laid-Open No. 2001-026911, and detailed description thereof is omitted here.

In the third embodiment, the distance between the upper end portions of the first vertical side portion 12 and the second vertical side portion 13 is made smaller than the gap between the soundproof walls and the insertion is described in the first and second embodiments. When the fastener is inserted into (attached to) the gap S, the third horizontal side portion (including the first short side portion to the fourth short side portion) smoothes the inner surface of the second vertical side portion 13. The function of sliding and smooth insertion does not work. However, when lightly pushing the distance between the upper ends of the first vertical side 12 and the second vertical side 13 slightly larger than the gap between the soundproof walls, the insertion as described in the first embodiment is performed. Demonstrate the function of time.

Further, while the fastener 10a is used in the gap S, the soundproof wall is shaken by vibration, strong wind, etc., and the gap interval is reduced or enlarged. As a result, the first vertical side The interval between the portion 12 and the second vertical side portion 13 always changes. Therefore, it is necessary for the fastener to smoothly follow the reduction / expansion of the interval. That is, the smooth movement of the third horizontal side portion (including the first short side portion to the fourth short side portion) smoothly sliding on the inner surface of the second vertical side portion 13 is smooth for the reduction and expansion of the interval. This is also necessary to follow this, and is also necessary in the third embodiment.

Thus, as described above, the fastener is strongly required to smoothly follow the reduction and enlargement of the gap after insertion. In response to this requirement, in any of the first to third embodiments, the first short side portion and the connecting portion (between the third anti-knitting portion and the fourth side portion) are the first short side portion. Since it has a function of contacting with a contact pressure difference that the contact pressure of the side is strong and the contact pressure of the connection is weak, it follows the reduction and expansion of the gap due to vibration and wind force etc. after insertion Good performance and excellent functions.

10 and 11 show the fourth embodiment and are similar to FIGS. 5 and 6 of the second embodiment. While the third embodiment is provided with the engaging portion 41 with respect to the first embodiment, the fourth embodiment is provided with the engaging portion 41 similar to the third embodiment with respect to the second embodiment. It is. In the fourth embodiment, only parts different from the second embodiment will be described, and description of common parts will be omitted. Further, in the engaging portion 41 of the fourth embodiment, the first vertical side portion 12 and the first horizontal side portion 14 can be engaged and disengaged by the engaging portion 41 as in the third embodiment. This is the same as the engaging portion of FIG.

In the fourth embodiment, if the first vertical side portion 12 and the first horizontal side portion 14 are engaged with each other by the engaging portion 41 in advance, the above-mentioned fastener 50a can be easily inserted without using a hammer or the like. It can be inserted into the gap S, and the engagement can be easily released after the insertion. Therefore, even if the operator is weak, the fastener 50a can be easily attached by a simple operation, and a loud sound is prevented during the attachment operation or the fastener 50a is prevented from being broken. be able to.

  The fastener is strongly required to smoothly follow the reduction / expansion of the gap even after insertion. In response to this requirement, in any of the first to fourth embodiments, the first short side portion and the connecting portion (between the third anti-knitting portion and the fourth side portion) are the first short side portion. Since it has a function of contacting with a contact pressure difference that the contact pressure of the side is strong and the contact pressure of the connection is weak, it follows the reduction and expansion of the gap due to vibration and wind force etc. after insertion Good performance and excellent functions.

The engaging portion 41 is not limited to the structure of the above embodiment, and the first cut and raised portion 42 and the second cut and raised portion 43 are reversed, and the first cut and raised portion 42 is provided on the first lateral side portion 14. The second cut-and-raised portion 43 may be provided on the first vertical side portion 12. The hole 47a is not limited to a rectangular shape, and may have another shape. Moreover, you may form as a recessed part which the lip part 49 can engage, without forming in a hole. The lip portion 49 is inserted and engaged with the hole 47a from below, but the lip portion 49 is bent downward so that the lip portion 49 is inserted and engaged with the hole 47a from above. Also good. As a structure of the engaging part 41, it is good also as an engaging structure like Unexamined-Japanese-Patent No. 2001-026911. In particular, it is preferable that the lip portion 49 of the second cut and raised portion 43 is engaged with the hole portion 47a of the first cut and raised portion 42 by applying a shearing force.

In the above embodiment, in a free state where the fastener 10a is not inserted into the gap S, the first contact portion 17 contacts the inner surface of the first vertical side portion 12, and the second contact portion 18 is the second vertical side portion. 13 (or the connection portion 165 of the first short side portion 161 and the second short side portion 162 or the connection portion 165 of the third short side portion 163 and the fourth short side portion 164 is the second vertical side portion. 13 is not in contact with the inner surface of 13), and is formed so as to come into contact with the sound insulating plate 4 and the groove portion 3 when inserted into the gap S. However, it may be formed so as to come into contact with the inner surface of the second vertical side portion 13 with a light force from the beginning in a free state. However, considering the ease of insertion, the former, which is not in contact in a free state, is preferable.

The first reinforcing beads 44 formed on the first lateral side portion 14 and the second lateral side portion 15 are formed to protrude outward, but may be formed to protrude inward. In addition, the first deformation portion, the second deformation portion, and the third deformation portion provided in the first reinforcing bead 44 and the second vertical side portion 13 are not limited to a single line, and may be formed in a plurality of lines. In particular, when the second vertical side portion or the like is wide, it is preferable to provide a plurality of reinforcing beads and deformed portions.

The protruding wall portion 20 of the first embodiment or the third embodiment may be used as the stopper portion 22 of the second embodiment or the fourth embodiment. Conversely, the stopper portion 22 of the second embodiment or the fourth embodiment may be used as the first embodiment or the third embodiment. The protruding wall portion 20 may be used.

It is sectional drawing which shows the sound-insulation wall in which the sound-insulation board fastener which concerns on Embodiment 1 of this invention was provided. It is the II-II sectional view taken on the line of FIG. 1 is a schematic perspective view of a fastener according to Embodiment 1 of the present invention. FIG. It is related with Embodiment 1 of this invention and is a side view of a fastener. It is related with Embodiment 1 of this invention, and is a simplified diagram explaining the contact state at the time of insertion. FIG. 4 is a diagram corresponding to FIG. 3 according to the second embodiment of the present invention. FIG. 4 is a diagram corresponding to FIG. 4 according to the second embodiment of the present invention. FIG. 4 is a view corresponding to FIG. 3 according to Embodiment 3 of the present invention. FIG. 5 is a diagram corresponding to FIG. 4 according to the third embodiment of the present invention. FIG. 4 is a view corresponding to FIG. 3 according to Embodiment 4 of the present invention. FIG. 5 is a diagram corresponding to FIG. 4 according to Embodiment 4 of the present invention.

Explanation of symbols

4 Sound insulating plate 10 Fastener 11 Mounting portion 12 First vertical side portion 13 Second vertical side portion 14 First horizontal side portion 15 Second horizontal side portion 16 Third horizontal side portion 17 First contact portion 18 Second contact portion 20 Projecting wall portion 21 Inclined wall surface 31 First deforming portion 32 First inclined surface 33 First top portion (upper surface)
40 Retaining protrusion 41 Engaging portion 44 First reinforcing bead 45 Second reinforcing bead 46 Third reinforcing bead

Claims (15)

In a soundproof wall comprising a rectangular sound insulating plate and a support column having a groove portion that supports the edge of the sound insulating plate, when the sound insulating plate is inserted into the groove portion of the support column, the groove portion and the sound insulating plate A leaf spring type fastener that is mounted in a gap with the end edge portion and presses the sound insulating plate against the groove portion by elastic restoring force, and extends in a substantially vertical direction, and when mounted in the gap, the thickness direction The first vertical side portion that is in contact with the surface on the gap side in the thickness direction of the sound insulating plate and the first vertical side portion that faces the first vertical side portion, and the horizontal distance between the first vertical side portion is on the upper side The upper end of the side opposite to the first vertical side in the thickness direction abuts against one side of the U-shaped cross-section groove when extending in a substantially vertical direction so as to become larger toward the gap. 2 vertical sides and the upper end of the second vertical side are connected to the first vertical side from the upper end. A first horizontal side portion that extends and a second horizontal side that is connected to the first vertical side portion side end portion of the first horizontal side portion and extends downward from the end portion on the second vertical side portion side. And a third horizontal side portion connected to the second vertical side portion side end portion of the second horizontal side portion and extending from the end portion toward the first vertical side portion side and upward, A connection portion between the first lateral side portion and the second lateral side portion is formed as a first contact portion that can contact the inner surface of the first longitudinal side portion, and the second lateral side portion and the third lateral side portion are formed. A second contact portion that can contact the inner surface of the second vertical side portion is formed between the connecting portion and the third horizontal side portion;
A protruding wall portion comprising an inclined wall surface formed to protrude obliquely downward from the inner surface of the second vertical side portion at a position lower than the position where the second contact portion contacts the inner surface of the second vertical side portion. Prepared,
After the second contact portion comes into contact with the inner surface of the second vertical side portion and slides downward, the second contact portion comes into contact with the inclined wall surface and stops. Plate clamp. The sound insulating plate fastener of a soundproof wall according to claim 1, wherein the projecting wall portion is integrally formed by projecting and deforming a part of the second vertical side portion. Sound insulation plate fasteners for soundproof walls. The sound insulation plate fastener of a soundproof wall according to claim 1 or 2, wherein an imaginary line connecting the first contact portion and the second contact portion is located above the longitudinal direction of the second lateral side portion. A first deforming portion that protrudes inwardly toward the second vertical side portion at a position above the protruding wall portion, and an inner surface of the second vertical side portion is formed at a lower end portion of the first deforming portion. The first inclined surface formed obliquely upward from the first deformable portion toward the first top portion of the first deformable portion, and in the initial stage when the second contact portion contacts the inner surface of the second vertical side portion, It is formed so as to slide downward in contact with the inclined surface, to directly contact the inner surface of the second vertical side at the lower position of the first inclined surface, and then to stop by contacting the inclined wall surface. Sound insulation plate fasteners for soundproof walls. The sound insulating plate fastener for a soundproof wall according to claim 3, wherein the first deformable portion is provided in a bead shape that is long in the lengthwise direction of the second vertical side portion at the center portion in the width direction of the second vertical side portion. Sound insulation plate fastener for soundproof wall, characterized by 5. The sound insulation plate fastener for a sound insulation wall according to claim 4, wherein a part of the first deformed portion is cut out to form a retaining protrusion. The sound insulation plate fastener for a soundproof wall according to claim 1, wherein the projecting wall portion comprises a stopper portion formed by cutting out a part of the second vertical side portion, and the stopper portion is spring-like. A sound insulation plate fastener for a soundproof wall characterized by having a restoring force. The sound insulation plate fastener for a soundproof wall according to claim 6, wherein the third lateral side extends from the end of the second lateral side toward the second longitudinal side and upward. A second short side portion connected to the second vertical side portion side end portion of the first short side portion and extending from the end portion toward the first vertical side portion side and the upper side, and the second A third short side portion connected to the first vertical side portion side end portion of the short side portion and extending from the end portion toward the second vertical side portion side and upward, and a second of the third short side portion. A fourth short side portion connected to the vertical side portion side end portion and extending from the end portion toward the first vertical side portion side and upward, wherein the first short side portion is a second vertical side portion. The connection portion between the third short side portion and the fourth short side portion slides in contact with the inner surface of the second vertical side portion, and the first short side portion To stop by touching the stopper Sound insulating plate fasteners soundproof walls, characterized by being made. The sound insulation plate fastener for a soundproof wall according to claim 6 or 7, wherein the second vertical side portion has a bead-shaped second deformation portion formed so as to protrude inward in the longitudinal direction of the second vertical side portion. An upper end portion of the second deformable portion is provided with a second inclined surface formed obliquely downward from the inner surface of the second vertical side portion toward the second top portion of the second projecting portion; The connecting portion between the third short side portion and the fourth short side portion is configured to come into contact with the second inclined surface and slide toward the second vertical side portion, and a second top portion of the second deforming portion is connected to the second top portion. 1. A sound insulation plate clasp for a soundproof wall, wherein an upper surface is formed on which a short side portion comes into surface contact and slides. 9. The sound insulation plate fastener for a sound insulation wall according to claim 8, wherein the protruding wall portion is formed so as to protrude further inward from the second deformable portion.  The sound insulating plate fastener for a soundproof wall according to claim 8 or 9, wherein the second vertical side portion is formed by notching from the second vertical side portion at a position above the second deforming portion, and the tip is formed by the notch. A sound insulation plate clasp for a sound insulation wall having a retaining protrusion capable of contacting the inner surface of the sound insulation wall.  The sound insulation plate fastener for a soundproof wall according to any one of claims 1 to 10, wherein a first reinforcing bead that is continuous from the first lateral side portion to the second lateral side portion is provided at a central portion in the width direction. A sound insulation plate fastener for a soundproof wall. 12. The sound insulation plate fastener for a soundproof wall according to claim 11, wherein a second reinforcing bead is provided at both ends in the width direction of the first lateral side, and a third reinforcing bead is provided at both ends in the width direction of the second lateral side. Sound insulation plate fasteners for soundproof walls characterized by being made. The sound insulating plate fastener for a soundproof wall according to any one of claims 1 to 12, further comprising an engaging portion that can be engaged and disengaged between the first vertical side portion and the first horizontal side portion. When the first vertical side portion and the first horizontal side portion are engaged by the portion, the horizontal distance between the upper ends of the first vertical side portion and the second vertical side portion is smaller than when the first vertical side portion is not engaged. A sound insulation plate clasp for a soundproof wall, characterized in that The sound insulation plate fastener of a soundproof wall according to claim 13, wherein the engaging portion is formed by cutting and raising from the first vertical side portion and first raising and lowering portions from the first horizontal side portion. A sound insulating plate fastener for a soundproof wall, comprising two cut and raised portions, wherein the first cut and raised portions and the second cut and raised portions are formed to be detachable. The sound insulation plate fastener of a soundproof wall according to claim 14, wherein the first cut-and-raised portion and the second cut-and-raised portion are disengaged from each other by forcing one cut-off portion in the vertical direction. A sound insulation plate clasp for a soundproof wall, characterized in that

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