JP2005299164A - Sound insulating plate fastening for sound insulating wall - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To smoothly lower a connection part between a second horizontal side part and a third horizontal side part in contact with the inner surface of a second vertical side part when a sound insulating plate fastening is inserted in a clearance of a sound insulating wall. <P>SOLUTION: In the sound insulating plate fastening for the sound insulating wall, a first horizontal side part 14 and the second horizontal side part are provided between a first vertical side part 12 and the second vertical side part 13, and the tip part (the lower end part) of the second horizontal side part is provided with a first short side part 16, a second short side part 17, a third short side part 18 and a fourth short side part 19 in this order. The first short side part 16 slides in contact with the inner surface of the second vertical side part 13, and a connection part 21 between the third short side part 18 and the fourth short side part 19 slides in contact with the inner surface of the second vertical side part 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI

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 basically extends in a substantially vertical direction, and when mounted in the gap, the first vertical surface 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 horizontal portion is provided so that the horizontal distance between the side portion and the first vertical side portion and the first vertical side portion increases toward the upper side, and the fastener is attached to the gap, the thickness direction The upper end of the side opposite to the first vertical side is provided with a second vertical side that abuts against one side 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 connecting portion between the lateral side portion and the second lateral side portion is formed so as to contact the inner surface of the first longitudinal side portion. 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 downward. A connecting portion between the second horizontal side portion and the third horizontal side portion is formed so as to slide in contact with the inner surface of the second vertical side portion.
The lower end portions of the first vertical side portion and the second vertical side portion are connected via a connecting side portion, for example, as described in the above publication, or directly connected without using a connecting side portion. (Patent Document 2)

 The horizontal distance between the lower ends of the first vertical side and the second vertical side is set smaller than the gap, while the horizontal distance between the upper ends is set larger than the gap. In order to attach the fastener to the gap between the sound insulating plate and the U-shaped groove, first, the lower ends of the first vertical side and the second vertical side are inserted into the gap, By hitting the metal fitting with a hammer or the like from the upper side, the upper ends of the first vertical side and the second vertical side are bent toward each other and completely inserted into the gap.

Japanese Utility Model Publication No. 4-57513 JP 2001-026911 A

In the conventional fastener, when inserted into the gap between the groove portion of the column of the soundproof wall and the end edge portion of the sound insulating 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. Then, 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 action direction of the force when the distance between the two vertical sides is narrowed is substantially horizontal (or slightly obliquely downward), whereas the direction in which the connecting part slides is substantially vertical, and slips. It is difficult to obtain sliding force by overcoming the contact resistance with a small directional acting force.

Normally, when the fastener is inserted into the gap, the first lateral side portion is driven downward, so that the connection portion between the first lateral side portion and the second lateral side portion contacts the inner surface of the first vertical side portion. However, it is possible to forcibly slide down. However, at the connecting portion between the second side portion and the third side portion, there is no such forced downward acting force, and the connecting portion often does not slip. In some cases, the second lateral side portion is deformed and the spring force is weakened. In an extreme case, the second lateral side portion is partially damaged.

The object of the present invention is for the sound insulation plate fastener of the sound insulation wall as described above.
A structure in which when the sound insulation plate fastener is inserted into the clearance between the soundproof walls, the connecting portion between the second horizontal side portion and the third horizontal side portion comes into contact with the inner surface of the second vertical side portion and smoothly descends. Is to provide.

In the first aspect of the invention, in the soundproof wall provided with the rectangular sound insulating plate and the support column having the groove portion that supports the edge portion of the sound insulating plate, the sound insulating plate is inserted into the groove portion of the support column. A leaf spring type fastener that is mounted in the gap between the groove and the edge of the sound insulation plate and presses the sound insulation plate against the groove by elastic restoring force, and extends substantially in the vertical direction and is attached to the gap. A first vertical side portion in which one surface in the thickness direction is in contact with the surface on the gap side in the thickness direction of the sound insulating plate, the first vertical side portion is opposed to the first vertical side portion, and The horizontal distance between the first vertical side in the thickness direction and the upper end of the side opposite to the first vertical side in the thickness direction is the U-shaped groove. It is connected to the 2nd vertical side part which contacts one side, and the upper end part of the 2nd vertical side part, and the above-mentioned upper end part 1st horizontal side part extended toward 1 vertical side part side, and the 1st vertical side part side edge part of the said 1st horizontal side part are connected to the said 2nd vertical side part side and lower side from this edge part A second lateral side extending toward
A contact portion formed to contact the inner surface of the first vertical side portion at the connection portion between the first horizontal side portion and the second horizontal side portion;
A first short 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 second vertical side portion 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 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 upward;
A fourth short side portion connected to the second vertical side portion side end portion of the third short side portion and extending from the end portion toward the first vertical side portion side and upward;
The first short side portion is configured to slide in contact with the inner surface of the second vertical side portion,
A connection portion between the third short side portion and the fourth short side portion is configured to come into contact with and slide on the inner surface of the second vertical side portion.

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 second vertical side portion is formed with a protruding portion that protrudes inward, and the protruding portion is the second vertical side. An inclined surface formed obliquely downward from the inner surface of the portion toward the top of the projecting portion, and a connecting portion between the third short side portion and the fourth short side portion is in contact with the inclined surface to form a second It is configured to slide in the vertical side direction.

According to a third aspect of the present invention, in the sound insulating plate clasp of the soundproof wall according to the second aspect, the protruding portion is formed in a bead shape extending in the longitudinal direction of the second vertical side portion, and is formed on the top of the bead-shaped protruding portion. An upper surface on which the first short side portion slides in surface contact is formed.

According to a fourth aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to any one of the first to third aspects, the second vertical side portion is located above the projecting portion from the second vertical side portion. It is formed by a notch, and a tip has a retaining protrusion that can contact the inner surface of the soundproof wall.

According to a fifth aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to any one of the first to fourth aspects, a reinforcing bead portion that is continuous from the first lateral side portion to the second lateral side portion is provided. .

According to a sixth aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to any one of the first to fifth aspects, 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 comprised so that it may become smaller than the time of non-engagement.

According to a seventh aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to the sixth aspect, the engaging portion includes a first cut and raised portion formed by cutting and raising from the first vertical side portion, and a first horizontal side portion. The first cut-and-raised portion and the second cut-and-raised portion are detachably formed.

According to an eighth aspect of the present invention, in the sound insulating plate clasp of the soundproof wall according to the seventh aspect, the first cut-and-raised portion and the second cut-and-raised portion are both formed by forcing one cut-off portion in the vertical direction. Is disengaged.

According to a ninth aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to the eighth aspect, the second cut and raised portion is formed by bending upward from the base portion extending in the first vertical side portion direction and the tip of the base portion. The first cut-and-raised portion comprises an engagement receiving portion formed extending in the direction of the second vertical side portion, and the lip portion of the second vertical side portion is formed on the engagement receiving portion. Is formed so that the engagement between the two raised portions is released by forcing the second cut and raised portion downward relative to the first raised portion. .

According to a tenth aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to any one of the fourth to ninth aspects, a reinforcing bead portion is provided on the second vertical side portion at a position above the retaining projection. It has been.

According to an eleventh aspect of the present invention, in the sound insulating plate fastener of the soundproof wall according to any one of the first to tenth aspects, the lower end portion of the first vertical side portion and the lower end portion of the second vertical side portion are connected. A connecting side is provided.

In the first aspect of the present invention, when the sound insulating plate fastener is inserted into the clearance between the soundproof walls, 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. Can slide in contact. Therefore, at the initial stage of insertion, one of the end portion of the first short side portion and the connection portion between the third short side portion and the fourth short side portion may slide on the inner surface of the second vertical side portion with light contact. After that, it is possible to slide while maintaining a sufficient spring force at both the end portion of the first short side portion and the connecting portion between the third short side portion and the fourth short side portion.

In the invention of claim 2, 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 invention of Claim 3, the intensity | strength of a protrusion part can fully be ensured and the intensity | strength of a 2nd vertical side part can be improved.

In invention of Claim 4, it can suppress significantly that a fastener is removed. In particular, since the second vertical side portion is elastically deformed in the direction of the first vertical side portion and the fastener is inserted into the gap, the second vertical side portion is strongly pressed against the inner surface of the column by the elastic restoring force after insertion. . Since the retaining protrusion is pressed against the inner surface of the support column using this pressing force, the retaining protrusion is surely caught on the inner surface of the support column, and the fastener can be prevented from coming off. Further, since the retaining protrusion is caught on the inner surface of the support column, the sound insulating plate is not damaged.

In the invention of claim 5, since the strength of the contact portion between the first lateral side portion, the second lateral side portion, and both lateral side portions is improved, and the contact area between the contact portion and the first vertical side portion is reduced. The frictional resistance can be reduced, the inner surface of the first vertical side can be smoothly slid, and a sufficient restoring spring force can be secured. Further, when the first horizontal side portion is struck with a hammer or the like, the strength of the first horizontal side portion is increased, so that deformation of the first horizontal side portion can be prevented.

In the invention of claim 6, 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 7, 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.

  In the invention of claim 8, 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.

  According to the ninth aspect of the present invention, the engagement of the engagement portion is relatively easy, and after the fastener is inserted into the clearance of the soundproof wall, the engagement portion can be easily released, and the workability is extremely excellent.

In invention of Claim 10, the intensity | strength of a 2nd vertical side part can be improved and the restoring spring force of a 2nd vertical side part can be maintained favorably.

  In the invention of claim 11, even when the gap between the U-shaped groove and the sound insulating plate is relatively wide, the elastic restoring force of the fastener can sufficiently function.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
FIGS. 1 to 5 relate to Embodiment 1 of the present invention and show an example in which a fastener is applied to a sound insulation plate of a sound insulation wall. 1 shows a soundproof wall 1 provided with a clasp 10, and the soundproof walls 1 are erected at predetermined intervals in a direction along the automobile road (a direction perpendicular to the paper of FIG. 1) on both sides of the automobile road. A large number 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 stuck and fixed to the side surface opposite to the motorway of each support | pillar 2. As shown in FIG.

  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 abuts the upper surface of the sound insulating plate 4 and protrudes from the upper surface. A mounting side portion 11 having a fitting hole 11a that substantially fits with the fitting portion 4c having a circular cross section (see FIG. 2) 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 22. The upper end portion of the side surface opposite to the first vertical side portion 12 (the side surface opposite to the automobile road) in the thickness direction of the second vertical side portion 13 is formed in the groove portion 3 when the fastener 10 is mounted in the gap. It comes into contact with the side opposite to the automobile 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. At the end (lower end) of the second horizontal side 15 on the second vertical side 12 side, the vicinity of the second vertical side 13 from the end toward the second vertical side 13 and upward. The 1st short side part 16 extended to is connected.
An end (upper end) on the second vertical side 13 side of the first short side 16 extends from the end toward the upper side on the first vertical side 12 and is substantially the first short side. The second short side portion 17 having the same length as is connected. An end portion (upper end portion) on the first vertical side portion 12 side of the second short side portion 17 extends from the end portion toward the second vertical side portion 13 side and upward, and is substantially the first short side portion. The third short side portion 18 having the same length as is connected. An end (upper end) on the second vertical side 13 side of the third short side 18 extends from the end toward the upper side on the first vertical side 12 and has a short length of fourth. The short side part 19 is connected.

In the connecting portion between the first horizontal side portion and the second horizontal side portion, the contact portion 20 that contacts the inner surface of the first vertical side portion is formed in a smooth circular arc shape.
The first short side portion 16 is configured to come into contact with the inner surface of the second vertical side portion 13 and slide, and the connection portion 21 between the third short side portion 18 and the fourth short side portion 19 is the second vertical side portion. It is comprised so that it may contact and slide on the inner surface. Details of this contact state will be described later.
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 23 is capable of contacting the inner surface of the groove portion 3 of the column 2. Is formed.
In the second vertical side portion 13, a bead-like protruding portion 24 is formed on the lower side of the retaining projection 23 so as to protrude inward (in the direction of the first vertical side portion 12). The upper surface 24b of the protrusion 24 is formed in a planar shape. An inclined surface 24a is formed obliquely upward from the upper end portion of the upper surface 24b toward the inner surface of the second vertical side portion 13.
In the second vertical side portion 13, a reinforcing bead 25 having a shape similar to that of the bead-shaped protrusion 24 is formed on the upper side of the retaining protrusion 23 so as to protrude inward.

A reinforcing bead portion 26 is provided in the central portion 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 bead portion 26 is also formed so as to continuously protrude toward the outside with the same width on the contact portion 21 between the first lateral side portion 14 and the second lateral side portion 15. 14, the intensity | strength improvement of the 2nd side part 15 and the contact part 21 is aimed at.
Lower end portions of the first vertical side portion 12 and the second vertical side portion 13 are connected by a connecting side portion 22. The length of the connecting side portion 22 is formed slightly smaller than the gap S so that it can be easily inserted into the gap S.

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. For the sake of brevity, the retaining protrusion 23 and the reinforcing bead portion 26 are omitted. When the fastener 10 is inserted, the second vertical side portion 13 is elastically deformed so as to be closer to 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. 1
In a free state before the fastener 10 is inserted into the gap S, the first short side portion 16 and the connecting portion 21 are separated from the inner surface of the second vertical side portion 13 as shown as the first stage A in FIG. In the position.
When the interval between the first vertical side portion 12 and the second vertical side portion 13 is narrowed by inserting the fastener 10 into the gap S, first, as shown in FIG. The connecting portion 21 comes into contact with the inclined surface 24a of the protruding portion 24 and slides upward on the inclined surface 24a. And when the connection part 21 becomes the position vicinity which touches the inner surface of the 2nd vertical side part 13, the connection part of the 1st short side part 16 and the 2nd short side part 17 contacts the upper surface 24b of the protrusion part 24. Become. And the connection part of the 1st short side part 16 and the 2nd short side part 17 contacts the upper surface 24b of projection part 24, and moves slightly, as shown as the 3rd stage C in Drawing 5, The connecting portion 21 is in a state of floating from the inner surface of the second vertical side portion.
When the fastener 10 is further inserted from this state, as shown as the fourth stage D in FIG. 5, the first short side portion in the direction in which the angle between the first short side portion 16 and the second lateral side portion 15 is narrowed. The first short side portion 16 moves downward while being in contact with the upper surface 24b of the projecting portion 24, while the upper end portion of the projecting portion 24 is bent inwardly, and the first short side portion 16 is the upper surface of the projecting portion 24. 24b comes into surface contact. At the same time, the connecting portion 21 comes into contact with the upper surface 24 b of the protruding portion 24.

As described above, the connection portion 21 once comes into contact with the inner surface of the second vertical side portion 13 (including the protruding portion 24), and then the upper end portion of the first short side portion 16 comes in contact and the connection portion 21 is separated. Thereafter, a state is formed in which the first short side portion 16 makes surface contact and the connection portion 21 makes contact. Thus, in the initial stage when the fastener 10 is inserted into the gap S, a 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 in the latter half, the contact is made strongly. The inner surface (including the upper surface 24b of the protrusion 24) can be smoothly slid and moved.

In particular, at the initial stage when the connection portion 21 contacts the second vertical side portion 13, the connection portion 21 does not directly contact the inner surface of the second vertical side portion, but moves so as to contact and slide on the inclined surface 24a. Therefore, when the fastener 10 starts to be inserted into the gap S, the action in the direction of sliding to the connecting portion 21 with respect to the acting force in the direction in which the distance between the first vertical side portion 12 and the second vertical side portion 13 is narrowed. It is easy to obtain a component force and can realize smooth sliding. And it is changed from the contact of the connection part 21 to the contact of the upper end part of the 1st short side part 16, and contact force becomes strong gradually, and the 1st short side part 16 comes in surface contact and the connection part 21 contacts. Furthermore, since the contact force becomes stronger and the contact force becomes stronger gradually, both smooth slipping and elastic restoring force can be achieved.

Note that the timing at which the first short side portion 16 comes into surface contact with the upper surface 24a and the timing at which the connection portion 21 comes into contact with the upper surface 24a may be either earlier or simultaneously.
Moreover, although the connection part 21 has floated 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 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. Often curved slightly. In this case, in the present invention, the longitudinal direction of the second lateral side portion 15 with respect to the virtual line connecting the contact portion 20 and the connection portion 21 and the virtual line connecting the contact portion 20 and the upper end portion of the first short side portion 16. Since the second horizontal side portion 15 is deformed, the lower side portion 15 swells downward and deforms. As a result, the angle between the first lateral side portion 12 and the second lateral side portion 13 is increased, the curvature of the contact portion 20 is reduced, the connecting portion 20 becomes slippery, and buckling deformation and cracking occur. It becomes difficult to occur.

FIG. 6 shows the second embodiment, which is similar to FIG. 3 of the first embodiment. In the second embodiment, only portions different from the first embodiment will be described, and description of common portions will be omitted.
In the second embodiment, the first vertical side portion 12 and the first horizontal side portion 14 are detachable by the engaging portion 30. The engaging portion 30 is a first cut-and-raised portion 31 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 34 formed by cutting and raising the substantially central portion in the width direction. The first cut-and-raised portion 31 has a plate-like engagement receiving portion 32 that is cut and raised and bent in the direction of the first lateral side portion 14. The engagement receiving portion 32 is provided with a rectangular hole. The second cut-and-raised part 34 has a base part 35 formed by cutting and raising upward from the first lateral side part 14 and a lip part 36 bent upward at a substantially right angle at the tip of the base part 35.

  The horizontal distance between the upper ends of the first vertical side portion 12 and the second vertical side portion 13 (the horizontal distance between the opposite side surfaces to the opposite surface) is the first cut and raised portion 31 and the second cut and raised portion 34. Is not engaged (free state), the distance is set larger than the gap amount S. On the other hand, when engaged, the distance is smaller than the distance when not engaged 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 10 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 fastener 10 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, the exterior plate 5 is not pasted and fixed to each column 2.
First, the lip portion 36 of the second cut-and-raised portion 34 is engaged with the hole 33 of the first cut-and-raised portion 31 by bending the second vertical side portion 13 of the fastener 10 in advance toward the first vertical side portion 12 side. Keep it together. This engagement may be performed by a manufacturing apparatus when the fastener 10 is manufactured, or may be performed by a mounting operator using a tool. And while maintaining this state, the fitting hole 11a of the attachment side part 11 is opposed to each other while inserting the first vertical side part 12 and the second vertical side part 13 of the fastener 10 into the gap S. 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 30 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 portion 33 of the first cut-and-raised portion 31 and the lip portion 36 of the second cut-and-raised portion 34 or the lower surface of the engagement receiving portion 32 of the first cut-and-raised portion 31 and the second A tool 33 (not shown) such as a screwdriver whose tip is formed in a wedge shape is inserted between the upper surface of the base portion 35 of the cut-and-raised portion 34 and is turned or twisted, whereby the hole portion 33 and the lip portion The engagement with 36 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 insulation plate 4 is pressed against 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 10 is completed. At this time, the tip of the retaining projection 23 is also brought into contact with the side surface of the U-shaped groove 3 opposite to the automobile road, thereby preventing the fastener 10 from coming off due to vibration or the like.

  In this embodiment, if the first vertical side portion 12 and the first horizontal side portion 14 are engaged with each other by the engaging portion 30 in advance, the fastener 10 can be easily inserted without using a hammer or the like. It can be inserted into the gap, and the engagement can be easily released after the insertion. Therefore, even if it is an operator with weak power, the fastener 10 can be easily attached by a simple operation, and a loud sound is generated during the attachment operation, and the fastener 10 is prevented from being broken. be able to. This mounting operation is the same as that described in detail in Japanese Patent Laid-Open No. 2001-026911, and detailed description thereof is omitted here.

  In the second embodiment, when the distance between the upper ends of the first vertical side and the second vertical side is made smaller than the gap of the soundproof wall and inserted, the function as described in the first embodiment is used. That is, when inserting (attaching) the metal fitting into the gap, the connecting portion between the third short side portion and the fourth short side portion is in contact with the second vertical side portion, and the first short side portion is also in contact thereafter. Thus, the function that the contact part can smoothly slide and smoothly insert the inner surface of the second vertical side part is not exhibited. However, in the case where the distance between the upper ends of the first vertical side portion and the second vertical side portion is slightly larger than the gap between the soundproof walls and is lightly pushed in, the insertion at the time of insertion as described in the first embodiment is performed. Demonstrate the function.

In addition, while the clasp is being used in the gap, the soundproof wall is shaken by vibration, strong wind, etc., and the gap interval is reduced or enlarged. It is necessary to always follow the reduction / enlargement of the interval by constantly changing the interval with the second vertical side portion. That is, when the first short side portion and the connecting portion (between the third anti-knitting portion and the fourth side portion) smoothly contact the inner surface of the second vertical side portion and slip, the above-mentioned interval is reduced or enlarged. It is also necessary to follow smoothly.
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 both the first and second 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 Discards good features and good functionality.

The engaging portion 30 is not limited to the structure of the above embodiment, and the first cut and raised portion 31 and the second cut and raised portion 34 are reversed, and the first cut and raised portion 31 is provided on the first lateral side portion 14. The second cut and raised portion 34 may be provided on the first vertical side portion 12. The hole 33 is not limited to a rectangular shape, and may have another shape. Moreover, you may form as a recessed part which can engage the lip | rip part 36, without forming in a hole.
The lip portion 36 is inserted into and engaged with the hole portion 33 from below, but the lip portion 36 is bent downward so that the lip portion 36 is inserted into the hole portion 33 from above and engaged. Also good.
As a structure of the engaging part 30, it is good also as an engaging structure like Unexamined-Japanese-Patent No. 2001-026911.
In particular, it is preferable that the lip portion of the second cut and raised portion 34 is engaged with the hole portion 33 of the first cut and raised portion 31 by applying a shearing force.

In the above embodiment, in a free state where the fastener 10 is not inserted into the gap S, the contact portion 20 contacts the inner surface of the first vertical side portion 12, and the first short side portion 16 and the second short side portion 17. And the connection portion 21 of the third short side portion 18 and the fourth short side portion 18 do not contact the inner surface of the second vertical side portion 13 and is inserted into the gap S between the sound insulating plate 4 and the groove portion 3. It is formed to contact. 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 reinforcing beads 26 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. The reinforcing beads 26 and the reinforcing beads 25 provided on the second vertical side portion 13 are not limited to one and may be formed in a plurality. It is preferable to provide a plurality of reinforcing beads especially for the second vertical side portion having a wide width.

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. FIG. 4 is a side view of the fastener according to the first embodiment of the present invention. FIG. 4 is a simplified diagram for explaining a contact state during insertion according to the first embodiment of the present invention. The same figure as FIG. 3 is related with Embodiment 2 of this invention.

Explanation of symbols

10 Fastener 12 First vertical side 13 Second vertical side 14 First horizontal side 15 Second horizontal side 16 First short side 17 Second short side 18 Third short side 19 Fourth short side Part 23 retaining projection 24 projecting part 24a inclined surface 24b upper surface 25 reinforcing bead part 26 reinforcing bead part

Claims (11)

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. A contact portion formed so as to contact the inner surface of the first vertical side portion at a connection portion between the first horizontal side portion and the second horizontal side portion, and a second vertical side portion of the second horizontal side portion Connected to the side end, connected to the first short side extending from the end toward the second vertical side and to the upper side, and to the second vertical side side end of the first short side The second short side portion extending from the end portion toward the first vertical side portion side and the upper side, and the first short side portion side end portion of the second short side portion are connected to the second short side portion from the end portion. A third short side extending on the second vertical side and toward the upper side;
A fourth short side portion connected to the second vertical side portion side end portion of the third short side portion and extending from the end portion toward the first vertical side portion side and to the upper side; The side portion comes into contact with the inner surface of the second vertical side portion and slides, and the connecting portion between the third short side portion and the fourth short side portion contacts the inner surface of the second vertical side portion. A sound insulation plate fastener for a soundproof wall characterized by being configured to slide. The sound insulation plate fastener of a soundproof wall according to claim 1, wherein a protrusion that protrudes inward is formed on the second vertical side, and the protrusion is obliquely downward from the inner surface of the second vertical side. An inclined surface formed toward the top portion of the protruding portion is provided, and a connecting portion between the third short side portion and the fourth short side portion contacts the inclined surface and slides in the second vertical side portion direction. It is comprised by these. The sound insulating plate fastener for a soundproof wall according to claim 2, wherein the protruding portion is formed in a bead shape extending in the longitudinal direction of the second vertical side portion, and the first short side portion is a surface on the top of the bead-shaped protruding portion. The upper surface which slides in contact is formed. The sound insulation plate fastener for a soundproof wall according to any one of claims 1 to 3, wherein the second vertical side portion is formed with a notch from the second vertical side portion at a position above the protruding portion. Has a retaining protrusion that can contact the inner surface of the soundproof wall. The sound insulation plate fastener for a soundproof wall according to any one of claims 1 to 4, wherein a reinforcing bead portion is provided continuously from the first lateral side portion to the second lateral side portion. The sound insulating plate fastener for a soundproof wall according to any one of claims 1 to 5, 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. It is comprised so that it may become. The sound insulation plate fastener for a soundproof wall according to claim 6, 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. The first cut and raised portion and the second raised portion are formed so as to be detachable. The sound insulation plate fastener of a soundproof wall according to claim 7, 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. It is characterized by that. The sound insulation plate fastener of the soundproof wall according to claim 8, wherein the second cut and raised portion includes a base portion extending in the direction of the first vertical side portion and a lip portion formed by bending upward from the tip of the base portion, The first cut-and-raised portion includes an engagement receiving portion formed extending in the direction of the second vertical side portion, and a hole portion into which the lip portion of the second vertical side portion can be engaged with the engagement receiving portion. Is formed, and the second cut-and-raised portion is forced downward relative to the first cut-and-raised portion to release the engagement between the both raised and raised portions. The sound insulation plate fastener for a soundproof wall according to any one of claims 4 to 9, wherein a reinforcing bead portion is provided on the second vertical side portion at a position above the retaining projection. To do. The sound insulating plate fastener for a soundproof wall according to any one of claims 1 to 10, wherein a connecting side portion for connecting the lower end portion of the first vertical side portion and the lower end portion of the second vertical side portion is provided. It is characterized by being.

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