JP2000240014A - Soundproof wall, fitting method for sound insulating plate in soundproof wall, and fastener therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strongly fix a sound insulating plate to a pillar by a fastener without impairing workability in a soundproof wall. SOLUTION: A fastener 1 is constituted of a wave spring part 11, an engaging part 12 engaging with the projecting part 23a on the upper end face of a sound insulating plate 23, and a connecting part 13 connecting the wave spring part 11 with the engaging part 12. The side edge part of the sound insulating plate 23 is fitted into the U-shaped groove 22 of a pillar 21, the farmost part of the wave spring part 11 from the engaging part 12 is compressed in the axial direction, the compressed part is put in a gap between the side of the U-shaped groove 22 and the sound insulating plate 23, and the wave spring part 11 is pressed in the gap until the engaging part 12 is engaged with the projection part 23a of the sound insulating plate 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof wall, a method of mounting a sound insulating plate on the soundproof wall, and a fastener used for the mounting.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS.

[0003] As a method of installing the soundproof wall 2, the following method is known. First, a pair of pillars 21 having a U-shaped groove 22 are erected so that the respective U-shaped grooves 22 are opposed to each other with an interval therebetween. The exterior plate 24 is stretched so as to be connected. Next, a sound insulating plate 23 having a plate thickness smaller than the groove width of the U-shaped groove 22 facing the column 21 on the column side of the exterior plate 24.
And pressed against the inner surface of the groove of the column 21 located on the side opposite to the exterior plate 24. Then, the fastener 3 is attached to a gap generated between the U-shaped groove side surface and the sound insulating plate 23, and the sound insulating plate 23 is fixed to the column 21. Thus, the sound insulating plate 2
3 and 23 are laminated to form the soundproof wall 2.

In the soundproof wall 2 as described above,
A leaf spring type fastener 3 is generally used to fix the sound insulating plate 23 to the column 21 (Japanese Utility Model Laid-Open No. 4-5751).
No. 3).

[0005]

However, in the case of the leaf spring type fastener, the elastic restoring force is not carried by the entire spring, so that the stress concentration causes the leaf spring to be set or the fastener to be damaged. There is. In addition, there are also inconveniences such as the falling off of the fastener and the rattling of the sound insulating plate due to the set of the leaf spring.

In this case, it is conceivable to improve the strength of the leaf spring itself. However, it is difficult to insert the fastener into the gap between the groove side surface and the sound insulating plate, which is not appropriate.

[0007] The present invention has been made in view of such circumstances, and an object of the present invention is to firmly fix a sound insulating plate to a column without impairing workability and prevent rattling of the sound insulating plate. And to obtain durability.

[0008]

In order to achieve the above object, according to the present invention, a fastener provided with a wave spring portion is used as a fastener for fixing a sound insulating plate of a soundproof wall to a support. The sound insulating plate was fixed to the column by the elastic restoring force of the part.

More specifically, the invention of claim 1 is a method of attaching a sound insulating plate to a sound insulating wall in which a sound insulating plate is fixed to a pair of columns having a U-shaped groove extending in a longitudinal direction with a fastener, The struts are erected at intervals so that the U-shaped grooves face each other, and the sound insulating plate has a projection on an upper end surface and has a thickness greater than the width of the U-shaped grooves. A wave spring portion formed by spirally winding a band-shaped member in which peaks and valleys are alternately formed in a longitudinal direction along a spring axis direction, and a projection on an upper end surface of the sound insulating plate; An engaging portion that engages with the portion and extends laterally from one end of the wave spring portion perpendicularly to the axis of the wave spring and in a direction opposite to the side where the wave spring portion is located. Bend in the shape of a letter and engage with the wave spring part. Will and a connecting portion connecting the door,
Fitting the sound insulation plate into the pair of U-shaped grooves; compressing the portion of the wave spring portion of the fastener farthest from the engagement portion in the axial direction; In a state pressed against one side surface of the U-shaped groove, the engaging portion is positioned above the protrusion of the sound insulating plate,
A step of inserting the compressed portion of the wave spring portion from above into a gap formed between the other side surface of the U-shaped groove and the sound insulating plate, and releasing the compression force applied to the wave spring portion, A step of holding the fastener in the gap by the elastic restoring force of the wave spring section, and a step of press-fitting the wave spring section into the gap to engage the engagement section with the projection on the upper surface of the sound insulating plate. This is a method for mounting a sound insulating plate on a sound insulating wall comprising:

According to a second aspect of the present invention, there is provided a soundproof wall in which a sound insulating plate is fixed to a pair of pillars having a U-shaped groove with fasteners, and each of the pillars has a U-shaped groove facing each other. The sound insulating plate has a projection on the upper end surface and is formed to have a thickness smaller than the width of the U-shaped groove, and the fastener has a peak and a valley. A wave spring portion in which band-shaped members alternately formed in the longitudinal direction are spirally wound along the spring axis direction; an engagement portion engaging with the projection on the upper surface of the sound insulating plate; and the wave spring portion. And extending from one end sideward to the side perpendicular to the axis of the wave spring, and bent in a U-shape in the direction opposite to the side where the wave spring is located, and engages with the wave spring. And a connecting portion for connecting the
The sound insulating plate has both ends fitted in the U-shaped grooves of the pair of struts facing each other, and the wave spring portion of the fastener fixes the sound insulating plate to one of the U-shaped grooves by its elastic restoring force. So as to press against the side surface of the sound insulation plate and the other side surface of the U-shaped groove, and the engaging portion of the fastener is engaged with the projection on the upper surface of the sound insulation plate. It is a soundproof wall.

According to a third aspect of the present invention, a U-shaped groove extending in the longitudinal direction is formed on the opposing surfaces of a pair of columns that are erected at a distance from each other, and the upper end surface is formed in the opposed U-shaped groove. A sound insulating plate mounting fastener of a sound insulating wall in which both sides of a sound insulating plate having projections are fitted, wherein a band-shaped member in which peaks and valleys are alternately formed in a longitudinal direction is formed along a spring axial direction. A wave spring portion spirally wound, an engagement portion that engages with a projection on the upper end surface of the sound insulating plate, and a side from one end of the wave spring portion with respect to the wave spring axis. Attaching a sound insulating plate to a soundproof wall that extends vertically and is bent in a U-shape in a direction opposite to the side where the wave spring portion is located, and includes a connecting portion that connects the wave spring portion and the engaging portion. Fastener.

According to the above-described invention, the following operations and effects can be obtained.

The wave spring portion of the fastener has the property that the elastic restoring force when one portion of the peripheral portion is compressed is much smaller than when the entire wave spring portion is compressed. Therefore, if the portion of the wave spring portion farthest from the engagement portion of the fastener is compressed in the axial direction and the wave spring portion is inserted into the gap between the sound insulating plate and the side surface of the U-shaped groove, a small force can be obtained. Can be inserted by simply adding

When the wave spring portion is pressed into the gap, the entire portion is in a compressed state.
On the other hand, the elastic restoring force when the entire wave spring portion is compressed becomes very large. Therefore, the sound insulation board
The column is pressed against the U-shaped groove side surface of the column with strong force, and a strong mounting state is obtained.

Further, in the wave spring portion,
A uniform force is applied as a whole, and unlike conventional leaf springs, stress does not locally concentrate, so it is difficult for the wave spring part to set or break even after a long period of time Becomes

According to a fourth aspect of the present invention, in the fastener for attaching a sound insulating plate of a soundproof wall according to the third aspect, a portion or a compression portion of a winding portion adjacent to one pitch of a wave spring portion in a free state is contacted. This is a fastener for attaching a sound insulating plate of a sound insulating wall that is stopped so that portions that first come in contact with each other when they are touched are not shifted in phase in the horizontal direction.

In the case of the above construction, the resistance of the wave spring portion to the shearing force is increased, so that the sound insulating plate is prevented from moving in the horizontal direction, which is advantageous in suppressing the rattling of the sound insulating plate in the vertical and horizontal directions. .

[0018]

As described above, according to the present invention,
As the wave spring part is provided in the fastener,
The work of inserting the wave spring portion into the gap between the sound insulating plate and the U-shaped groove side surface of the support becomes easy. In addition, since the sound insulating plate is strongly pressed against the U-shaped groove side surface of the support by the elastic restoring force of the wave spring portion, the sound insulating plate can be firmly attached. Furthermore, since the wave spring portion is unlikely to set or break even after a long period of time, it is possible to prevent inconveniences such as falling off of the fastener and rattling of the sound insulating plate due to such.

According to the fourth aspect of the present invention, in addition to the effect of the above-mentioned invention, the rattling of the sound insulating plate in the horizontal direction can be suppressed.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 show a fastener 1 for a sound insulating plate according to an embodiment of the present invention.

The fastener 1 includes a wave spring portion 11 in which a band-shaped member in which peaks and valleys are alternately formed in the longitudinal direction is spirally wound along the spring axis direction, and a projection on the upper end surface of the sound insulating plate. And a side extending from one end of the wave spring portion 11 in a direction perpendicular to the axial direction of the wave spring and in a direction opposite to the side on which the wave spring portion 11 is located. The wave spring portion 11 and the connecting portion 13 that connects the engaging portion 12 are bent in the shape of a letter.

Here, the fastener 1 is made of 10% aluminum.
It is integrally formed from a thin strip of zinc alloy (width 5 mm, thickness 2 mm).

In the wave spring portion 11, the portions of the winding portions adjacent to each other by one pitch that are in contact with each other in a free state or the portions that first contact when compressed are stopped by welding.

The engaging portion 12 is formed so as to form a circle with a thin strip.

The portion of the connecting portion 13 extending laterally from one end of the wave spring portion 11 perpendicularly to the axis of the wave spring is along the surface of the sound insulating plate, and is located on the side where the wave spring portion is located. The portion bent in the opposite direction forms a U-shape with an internal angle of 78 degrees along the upper end surface of the sound insulating plate.

In the fastener 1, the wave spring portion 11 has a diameter of 60 mm, a height of 48 mm, and an engagement portion 12.
Has an outer diameter of 35 mm, a portion of the connecting portion along the surface of the sound insulating plate is 40 mm, and a portion of the connecting portion along the upper end surface of the sound insulating plate is 33 mm.

3 and 4 show a soundproof wall according to an embodiment of the present invention.

The soundproof wall 2 is composed of a pair of H-shaped steel columns 21 and 21 erected at a distance from each other, a sound insulating plate 23, and an exterior plate 2.
4 and the fastener 1. The sound insulating plate 23 is fixed to the H-shaped steel column 21 by the fastener 1.

Here, the pair of H-shaped steel columns 21, 21 are erected so that the respective U-shaped grooves 22, 22 extending in the longitudinal direction face each other.

The sound insulating plate 23 has a thickness smaller than that of the U-shaped groove 22 in order to fit into the U-shaped groove 22. The material is polycarbonate. Also, the sound insulating plate 23 includes
The engaging portion 12 of the fastener 1 is provided at a portion which becomes an upper end surface when fitted into the U-shaped groove 22 of the H-shaped steel column 21 and is hidden from the outside by the U-shaped groove 22 of the H-shaped steel column 21. An engaging projection 23a is provided.

The exterior plate 24 is made of aluminum.

FIG. 5 shows a state before fixing the sound insulating plate to the sound insulating wall according to the embodiment of the present invention by the fasteners.
Indicates a state after the fixing. Next, a method for mounting the sound insulating plate on the sound insulating wall will be described in detail with reference to these drawings.

First, a pair of H-shaped steel columns 21, 21 are erected so that the U-shaped grooves 22, 22 face each other at an interval from each other. The outer plate 24 is stretched so as to be connected. And
The sound insulation plate 23 is fitted in the U-shaped grooves 22 facing each other.

Next, the part of the fastener 1 farthest from the engaging part 12 of the wave spring part 11 is compressed in the axial direction of the spring, and the sound insulation is provided on the inside of the groove side opposite to the side where the exterior plate 24 is attached. The plate 23 is pressed. And
The engaging portion 12 is positioned above the projection 23 a of the sound insulating plate 23, and the compressed portion of the wave spring portion 11 is inserted from above into the gap formed between the U-shaped groove side surface and the sound insulating plate 23. As a result, the sound insulating plate is temporarily fixed to the H-shaped steel column 21.

Subsequently, the wave spring portion 11 of the fastener 1 is hit with a hammer or the like to forcefully insert the wave spring portion 11 into the gap, and the engaging portion 12 of the fastener 1 is inserted into the projection 23a on the upper end surface of the sound insulating plate. Engage. The mounting of the fastener is performed on both the pair of H-shaped steel columns 21, 21, and the installation of one sound insulating plate 23 is completed.

The installation process of the sound insulating plate 23 is repeated a required number of times, and the sound insulating plates 23 are laminated to complete the sound insulating wall 2.

Next, the operation and effect of the above embodiment will be described.

FIG. 7 shows the relationship between the amount of deflection generated by compressing the portion of the fastener 1 farthest from the engaging portion 12 of the wave spring portion 11 in the axial direction and the generated load. As can be seen, the wave spring portion 11 of the fastener 1 has such a property that the elastic restoring force when one portion of the peripheral portion thereof is compressed is small enough to be able to be compressed to some extent even with the force of the hand. Therefore, the portion of the wave spring portion 11 farthest from the engaging portion 12 of the fastener 1 is compressed in the axial direction, and the wave spring portion 11 is inserted into the gap between the sound insulating plate 23 and the U-shaped groove side surface. Then, the insertion operation can be performed by applying only a small force.

FIG. 8 shows the relationship between the amount of deflection and the load caused by compressing the entire wave spring portion 11 in the axial direction for the same fastener 1 used in FIG. . As can be seen from this, the elastic restoring force when the entire wave spring portion 11 is compressed becomes very large. On the other hand, when the wave spring portion 11 is pressed into the gap, the whole is in a compressed state. Accordingly, the sound insulating plate 23 is pressed against the U-shaped groove side surface of the H-shaped steel column with a strong force, and a strong mounting state is obtained.

Further, in the wave spring section 11,
Since a uniform force is applied as a whole, the wave spring portion 11 is unlikely to set or break due to stress concentration even after a long period of time, and the rattling of the sound insulating plate 23 can be prevented for a long period of time.

Then, one of the wave spring parts 11
Since the parts that are in contact in the free state of the winding parts adjacent to the pitch or the parts that first contact when compressed are stopped by welding so that they do not phase shift in the horizontal direction,
The resistance of the wave spring portion 11 to the shearing force increases. Therefore, it is possible to prevent the sound insulating plate 23 from moving in the horizontal direction, which is advantageous in suppressing rattling of the sound insulating plate 23 in the vertical and horizontal directions.

<Other Embodiments> The material of the fastener 1 is not particularly limited, and may be a metal composition such as an alloy in addition to a simple metal such as iron or aluminum. Or made of fiber reinforced resin or the like. In addition, the wave spring portion 11, the engagement portion 12
It is not necessary that all the components of the connecting portion 13 are made of the same material.

The fastener 1 is not particularly limited in its material form, such as a processed strip-shaped thin plate material or a processed cross-section circular material.

Further, the fastener 1 may be one in which the respective components of the wave spring portion 11, the engaging portion 12, and the connecting portion 13 are integrated, or may be one in which the respective components are joined. Good. Here, the joining method is not particularly limited, and includes all physical and chemical joining methods, for example, welding, pinning, fusion, bonding with an adhesive, and the like.

As a method of stopping the winding portions of the wave spring portion 11 that are adjacent to each other by one pitch in a free state or the portions that first contact when compressed are prevented from being phase-shifted in the horizontal direction. The method is not particularly limited and includes all physical and chemical bonding methods, and examples include welding, pinning, fusion, and bonding with an adhesive.

In the above-described embodiment, the portions of the winding portions of the wave spring portion 11 which are adjacent to each other at one pitch in a free state or the portions which first contact when compressed are phase-shifted in the horizontal direction. Although a configuration was used in which the configuration was not performed, it is not always necessary to adopt such a configuration.

The shape of the engaging portion 12 is not particularly limited as long as it engages with the projection 23a on the upper end surface of the sound insulating plate.

The portion of the connecting portion 13 extending from one end of the wave spring portion 11 in the direction perpendicular to the axial direction of the wave spring is along the surface of the sound insulating plate and in the direction opposite to the side where the wave spring portion is located. The bent part is along the top surface of the sound insulating plate. At this time, the angle formed by the U-shaped connecting portion 13 is determined according to the angle formed between the sound insulating plate surface and the upper end surface, and is not particularly limited.

The material of the column 21 is not particularly limited, and may be a metal such as iron, a resin, a fiber reinforced resin, or the like.

The U-shaped groove 22 extending in the longitudinal direction of the column 21 is a broad concept including a so-called U-shaped groove and all U-shaped grooves having parallel opposed side surfaces such as U-shaped grooves. . Further, the cross section of the support does not necessarily have to be a U-shape.
It may be a column or the like, and it suffices if at least a U-shaped groove is provided in the longitudinal direction of one side surface of the column.

The material of the sound insulating plate 23 is not particularly limited, and may be made of a resin such as polycarbonate or a metal.

The material of the exterior plate 24 is not particularly limited, and may be made of a resin such as a metal such as aluminum.

It should be noted that a coil spring may be used instead of the wave spring portion 11. However, the wave spring portion 11 can exhibit a strong compressive drag even at a small interval, and can reduce the weight of the fastener itself. It is superior to coil springs in that it can be used.

[Brief description of the drawings]

FIG. 1 is a side view of a fastener according to an embodiment of the present invention.

FIG. 2 is a top view of the fastener.

FIG. 3 is a side view showing a mounting state of the fastener.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a partially enlarged view of FIG. 3 showing a state before attaching the fastener.

FIG. 6 is a partially enlarged view of FIG. 3 showing the state after attaching the fastener.

FIG. 7 is a graph showing a relationship between a deflection amount and a load caused by compression in a spring axial direction of a portion of the fastener that is farthest from an engagement portion of a wave spring portion.

FIG. 8 is a graph showing a relationship between a deflection amount and a load caused by compression of the entire wave spring portion in the spring axial direction in the fastener.

FIG. 9 is a side view showing an attached state of a conventional leaf spring-integrated fastener.

FIG. 10 is a sectional view taken along line BB of FIG. 9;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 clasp 2 soundproof wall 3 leaf spring-integrated clasp according to conventional technology 11 wave spring portion 12 engaging portion 13 connecting portion 21 support post 22 U-shaped groove 23 sound insulating plate 23 a sound insulating plate upper end surface protrusion 24 exterior plate

Claims (4)

[Claims] 1. A method of mounting a sound insulating plate on a sound insulating wall, wherein the sound insulating plate is fixed to a pair of columns having a U-shaped groove extending in a longitudinal direction with fasteners, wherein each of the columns has a U-shape. The sound insulation plate has a protrusion on an upper end surface and is formed to have a plate thickness smaller than the width of the U-shaped groove, and the fastener has a peak. A wave spring portion in which a band-shaped member in which valleys and alternately formed in the longitudinal direction are spirally wound along the spring axial direction, and an engaging portion that engages with the protrusion on the upper surface of the sound insulating plate, The wave spring portion extends laterally from one end of the wave spring portion to the side perpendicular to the axis of the wave spring portion, and is bent in a U-shape in a direction opposite to the side where the wave spring portion is located. And a connecting portion for connecting the engaging portion. Fitting the sound insulation plate into the pair of U-shaped grooves; compressing the portion of the wave spring portion of the fastener farthest from the engagement portion in the axial direction; With the engagement portion positioned above the protrusion of the sound insulating plate, the compressed portion of the wave spring portion is positioned on the other side of the U-shaped groove. And a step of inserting from above into a gap created between the sound insulation plate and the compression force applied to the wave spring portion is released, so that the fastener is held in the gap by the elastic restoring force of the wave spring portion. And mounting the wave spring portion into the gap to engage the engaging portion with the projection on the upper surface of the sound insulating plate. 2. A soundproof wall in which a sound insulating plate is fixed to a pair of columns having a U-shaped groove by fasteners, wherein the columns are spaced from each other such that the U-shaped grooves face each other. The sound insulation plate has a projection on the upper end surface and is formed to have a plate thickness smaller than the width of the U-shaped groove, and the fastener has peaks and valleys alternately arranged in the longitudinal direction. A wave spring portion formed by spirally winding the formed band-shaped member along the spring axis direction; an engaging portion engaging with the projection on the upper end surface of the sound insulating plate; and one end of the wave spring portion From the wave spring portion to the side where the wave spring portion is located, and bent in a U-shape in a direction opposite to the side where the wave spring portion is located, to connect the wave spring portion and the engaging portion. The sound insulation plate has both ends at one end. The wave insulating portion of the fastener fits the sound insulating plate against one side surface of the U-shaped groove by its elastic restoring force. And the other side surface of the U-shaped groove, wherein the engaging portion of the fastener is engaged with a projection on the upper surface of the sound insulating plate. 3. A U-shaped groove extending in the longitudinal direction is formed on the opposing surfaces of a pair of pillars standing upright at a distance from each other,
A sound-insulating-wall mounting fastener for a sound-insulating wall in which both sides of a sound-insulating plate having a protrusion on its upper end face are fitted in the opposed U-shaped groove, wherein peaks and valleys are alternately formed in the longitudinal direction. A wave spring portion formed by spirally winding the band-shaped member along the spring axis direction; an engaging portion that engages with a projection on the upper surface of the sound insulating plate; and one end of the wave spring portion. A connecting portion that extends sideways perpendicularly to the axis of the wave spring and is bent in a U-shape in a direction opposite to the side where the wave spring portion is located, and connects the wave spring portion and the engaging portion. A fastener for attaching a sound insulating plate of a soundproof wall, comprising: 4. The fastener for attaching a sound insulating plate to a sound insulating wall according to claim 3, wherein a portion of the wave spring portion that is adjacent to the one-pitch adjacent winding portion in a free state or is compressed. A fastener for attaching a sound insulating plate of a sound insulating wall that is stopped so that portions that first contact each other are not phase-shifted in the horizontal direction.