JPH02275995A - Sound absorber and its coupling method, and protection material for sound absorber - Google Patents

Abstract

PURPOSE:To improve the construction and handling by boring many through holes dispersedly in a substrate and coupling unit sound absorbing members which each have a flexible porous sound absorber adhered on one surface by the insertion engagement of male and female engagement parts of the substrate. CONSTITUTION:Many through holes 13 are bored dispersedly in the surface of the substrate 2 and the unit sound absorbing members 1 which have flexible porous sound absorbers 3 adhered on their one-surface sides are coupled successively by the insertion engagement of the female and male engagement parts 11 and 12 of the substrate 2. Consequently, the flexible porous sound absorbers 3 which cover a plane, curved, or columnar body surface are easily constructed and protected matching the external surface of the cylindrical or rod-shaped sound absorbers 3 while the uniform outer appearance of the substrate 2 is maintained.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a sound-absorbing structure used for acoustic adjustment and noise prevention, and more specifically to a flexible porous sound-absorbing material and protection of a perforated plate covering its outer surface. The object of the present invention is to provide a prefabricated sound absorbing body with improved workability and ease of handling in a sound absorbing body made of materials, a method for connecting the same, and a prefabricated protective material for the sound absorbing material.

[Prior Art] Conventionally, sound-absorbing panels have been generally attached to ceilings, walls, etc. in order to prevent noise in venues, traffic routes, etc., and to adjust indoor acoustics in music halls, theaters, etc.; It is also known to arrange a cylindrical sound absorber on a large moon, on a wall surface, or in a sound field space, as shown in, for example, Japanese Utility Model Application Publication No. 186200/1983.

The above-mentioned sound-absorbing panel usually consists of 2 metal plates, 9 synthetic resin plates, 9 perforated plates such as plywood, and 11 sides of a flexible porous sound-absorbing material such as a fiber laminated plate such as glass wool rock wool or a synthetic resin foam. A bonded laminated structure is generally used, and the cylindrical sound absorber is made by fitting a cylinder made of a porous metal plate onto the outer surface of a cylindrical body made of the same flexible porous material as described above. .

[Problems that the invention attempts to solve]

Conventionally, when covering the base surface of a sound-absorbing panel with wood, a uniform construction surface is obtained by abutting and consecutively attaching them using appropriate hot-water absorption panel support means, but the construction work is troublesome, and the sound-absorbing panel Since the sound absorber itself does not bend or deform, it is difficult to construct it on a curved surface, and in the case of a cylindrical sound absorber, it is bulky and difficult to transport and handle.In particular, it takes a lot of time and effort to manufacture a perforated cylinder to protect its outer surface. In addition, it has problems such as being bulky and inconvenient to transport and handle.

[Means to solve the problem]

The present invention solves the above-mentioned problems in conventional sound absorbing panels and cylindrical sound absorbing bodies by using a unit member using an extruded strip material having female engaging portions and/or male engaging portions formed on both side edges. This problem was solved by using a tight fitting means.

That is, the sound absorbing body of the present invention has female engaging portions and/or on both side edges.
Or, a strip plate-like extruded material on which a male engaging portion is formed is used as a substrate,
A large number of through holes are drilled distributed over the surface of the substrate, and a plurality of unit sound absorbing members each made by adhering a flexible porous sound absorbing material such as SaW aggregate 9 resin foam to one side of the substrate are formed. The gist of the present invention is a sound absorbing body characterized in that sound absorbing materials are arranged in parallel on one side and interconnected by inserting and fitting male and female engaging portions of mutual substrates, and in this case, the above-mentioned The insertion-fitting structure of the l1lIItn type engagement part is such that the relative rotation of the substrates is suppressed and a constant joining angle selected from a single or multiple stages is maintained;
The above-mentioned plug-fitting structure of the male and female type engaging portions allows relative rotation of the two substrates within a wide range of angles, and at the same time maintains a fixed joining angle by attaching a support member that suppresses the relative rotation. A plurality of unit sound absorbing members are connected in a cylindrical shape, and inside a polygonal cylindrical outer surface protector formed by a substrate,
The sound absorbing material layer has a substantially polygonal cylindrical sound absorbing material layer made of parallel sound absorbing materials, and one sound absorbing body having the above structure has an end portion of the unit sound absorbing member at its edge. protrude, another sound absorber fits the end of some of the unit sound absorbing members at its edge, and the substrate of the protruding portion is attached to the substrates on one or both sides of the fitted portion, respectively. The present invention also includes the invention of a method for connecting sound absorbers to each other by insert-fitting the mold engagement portions.

Furthermore, the present invention provides unit protection in which a strip plate-like extruded material having female engaging portions and/or male engaging portions formed on both side edges is used as a substrate, and a large number of through holes are drilled distributed on the surface of the substrate. This invention encompasses the invention of a protection material for a sound absorbing material characterized in that a plurality of members are connected and connected in a planar shape, a bent surface shape, or a polygonal cylindrical shape by inserting and fitting a plurality of male and female engaging portions into each other.

The substrate of the male and female engagement portion and the substrate of the unit protection member are both extruded metal or synthetic resin strips with female engagement portions and/or male engagement portions formed on both side edges; A plurality of these substrates are arranged in a row in the middle direction and the longitudinal direction to expand the surface area in two directions.Therefore, the substrate has a female type engagement part on one side edge and a male type engagement part on the other side edge. Either one type consisting of a half-shaped material with a mating part formed therein, or a combination of two types obtained from a molded material with a male-shaped engaging part formed on both side edges and a molded material with a male-shaped engaging part formed on both side edges. is used.

The substrate is preferably an extruded aluminum profile and is typically 10 to 30 cm wide to allow for transportation and handling.

A rectangular plate with dimensions ranging from 100 to 300 cm in length is suitable. A large number of through holes distributed on the substrate surface are provided with opening dimensions and opening intervals that can prevent damage and deformation of the flexible porous sound absorbing material due to external forces, and the opening area is set to prevent the transmission of sound wave energy to the sound absorbing material. It is necessary that the aperture ratio does not impede the aperture ratio, and the aperture ratio is normally determined as appropriate within the range of 5% or more and 80% or less.

In the above-mentioned plug-fitting structure between the female type engaging part and the male type engaging part, the head of the male type engaging part is held in the holding part of the female type engaging part in its cross-sectional shape, and the head part is held in the holding part of the female type engaging part. The base of the part is pushed through the incision gap of the opening part, and the head part has dimensional conditions that prevent it from passing through the incision gap, and the fitting of the head part and the holding part is relatively rotational. The inner substrate is movable or capable of maintaining a phase angle selected from a single or multiple steps, or is connected by the distance between the incision gap of the holding part and the base of the head and the incision gap formation position. It is possible to determine the joint angle or rotation range of the joint.

The sound absorber of the present invention has a plurality of Iff male type engagement parts made by bonding a flexible porous sound absorbing material with an appropriate cross-sectional shape to one side of a substrate having a large number of through holes distributed in the plate surface as described above. By connecting and connecting the male and female engaging parts on both sides of the board by inserting and fitting, the board has a planar, curved surface with a protective surface that is an integer multiple of the effective diameter of the board and a sound absorbing material arranged in parallel on one side of the protective surface. A plurality of sound absorbing bodies under these shapes may be inserted in the longitudinal direction of the substrate at the protruding fitting portions of the male and female engaging portions of the plurality of sound absorbing bodies in these forms. A further enlarged form can be obtained by connecting in that direction depending on the combination.

In addition, the protection material for the sound absorbing material of the present invention is such that the substrate itself, which is a strip-like extruded material in which a large number of through holes are distributed in the plate surface used for the unit sound absorption member of the sound absorbing body, is used as a unit protection member. , a plurality of them are formed into a planar shape, a bent surface shape, or a polygonal cylindrical shape by the above-mentioned insertion fitting connection means, and thereby the outer surface of the flexible porous sound absorbing material adhered to the body surface, or a cylindrical shape,
There is something that covers and protects the outer peripheral surface of a rod-shaped flexible porous sound absorbing material.

Note that sound absorbing bodies made by connecting multiple unit sound absorbing members and sound absorbing protection materials made by connecting multiple unit protection members require an appropriate support member to prevent relative rotation of adjacent unit members. It is possible to maintain a stable shape by providing it according to the situation.

[Effect]

As described above, the sound absorbing body of the present invention is constructed by connecting a plurality of unit sound absorbing members each made of a substrate with a flexible porous sound absorbing material held on one side of a perforated plate by fitting the inserts 1 on both sides of the substrate. Therefore, it is possible to easily form a sound-absorbing coating or a prismatic cylindrical sound-absorbing structure that is suitable for the surface of a building frame, such as a planar, curved, or cylindrical structure, by maintaining a uniform protective outer surface with connected substrates. Moreover, the sound absorbing material protection material of the present invention is constructed by connecting a plurality of unit protection members of the porous substrate as described above by insertion fitting on both sides of the substrate. A structure that can be easily protected while maintaining the uniform appearance of the board, suitable for the construction surface of a flexible porous sound absorbing material covering the building frame surface, or the outer surface of a cylindrical or rod-shaped sound absorbing material. It is. .

〔Example〕

Embodiments of this invention can be explained with reference to the drawings. 1. Fig. 1 is a perspective view of a unit sound absorbing member 1 constituting a sound absorbing body, and Fig. 2 is a side view of a main part of a sound absorbing member Δ formed by connecting a plurality of unit sound absorbing members 1. A substrate made of an extruded aluminum strip having a female engaging portion 11 on the edge and a female engaging portion 12 on the other side; 13 is a large number of through holes distributed on two sides of the substrate; 3 is a sound absorbing material made of a rock wool board adhered to substantially the entire surface of one side of the substrate 2.

Reference numeral 10 in FIG. 2 is a connection part between the boards 2, and the female type engagement part 11 has a holding part with an incision gap provided in an annular part protruding below the side edge of the plate, and the male type engagement part 11 The portion 12 has a head with a circular cross section at the tip of the base that protrudes obliquely downward from the side edge of the plate, and these are inserted into each other to form a planar shape as shown by the solid line or -
A sound absorbing body A in which sound absorbing materials 3 are arranged in parallel on one side is constructed by connecting a plurality of unit sound absorbing members 1 in a refracting surface shape with a joining angle, as shown by the dashed dotted line.

FIG. 3 is a perspective view of a regular octagonal cylindrical sound absorber A constructed by connecting eight unit sound absorbing members 1, and FIG. Inside the octagonal cylindrical outer surface protection layer 7, the parallel sound absorbing vJ3
An octagonal cylindrical sound absorbing material layer 8 is formed, and is provided at both ends of a large diameter straight rod 21 which passes through the sound absorbing material 3 of the opposing unit sound absorbing member 1 and comes into contact with the inner surface of the substrate 2 at both ends. A small diameter screw shaft 22 passing through the substrate 2 and screws 1 to 2 screwed thereon.
3, the opposing unit sound absorbing members 1 are held in parallel at a predetermined interval to prevent relative rotation of the substrates 2 and to maintain the regular octagonal cylindrical shape of the sound absorbing body A. There is.

When forming the rectangular cylindrical sound absorbing body A, the supporting member 20 connects and supports two opposing unit sound absorbing members 1, and then
The sound absorbing body A can be constructed by sequentially inserting and fitting other unit sound absorbing members 1 or by sequentially inserting and fitting a plurality of sets of two unit sound absorbing members 1 connected and supported by the support member.・Ru.

Instead of the support member 20 using the large-diameter straight rod 21 described above, a support member in the form of a face plate that can be fitted to the inner surface of the polygonal cylindrical outer protective layer 7 of the substrate 2 or that can be fitted over both sides of the connecting portion 10 is used. A clip-shaped support member can be used, and FIG. 5 is a developed view of the face plate-shaped support member 20 for maintaining the regular octagonal cylinder, and the outer part 25 is aligned in the same direction at right angles with the broken line shown by the dotted line. By bending, a support member 20 having a fitting portion of a bent tongue piece 25 on the periphery of an octagonal face plate 24 is obtained, and FIG. 6 shows a clip-shaped support member 20.
FIG. 2 is a perspective view of a rectangular bottom plate 26, in which the tongue pieces 27 folded back in the shape of an opening form a fitting part for the base plate 2 of the unit sound absorbing member 1 on both sides of the connecting part 10, and are used for planar support or By bending at the center of the bottom plate 26 as shown by the dashed line, folded surface support can be achieved.

Figures 7, 8, and 9 show the above two unit sound absorbing members 1.
FIG. 7 is a cross-sectional view showing different aspects of the insertion fitting structure of the male and female engaging portions 11 and 12 in the connecting portion 10 of the seventh embodiment.
The figure shows a female engaging part 11 consisting of an annular holding part 15 forming an incision gap 16, and a tIJ1 firm engaging part 12 consisting of a head 18 with a circular cross section with the edge of the substrate 2 as a base 19, which are vertically symmetrical. The axis of rotation in the base state is located at the center line of the substrate 2, and has a rotation range of approximately 45° vertically relative to the planar bonded state shown in the figure. .

FIG. 8 shows a fitting structure in which the joining angle of the substrate 2 can be selectively locked in one of two specific stages, in which the female engaging portion 11 protrudes outward from the end of the substrate 2 and closes the incision gap 16. The holding part 15 is formed of an annular holding part 15, and three sets of locking parts made of two protrusions 14 parallel to the inner surface of the holding part 15 are formed at regular phase intervals.

On the other hand, the male engaging part 12 has a head 18 at the tip of a base part 19 that projects obliquely outward from the end of the substrate 2, and a head part 18 is formed on the outer circumferential surface of the head part 18 and on the inner surface of the holding part 15. Three sets of locking parts each consisting of two parallel protrusions 17 that can be engaged with each other in a fixed phase relationship are formed in correspondence with the three sets of locking parts each consisting of the protrusions 14.

Then, the interlocking phase relationship of the inner joint portion, which is made up of the two parallel protrusions 14 and 17 on the inner surface of the holding portion 15 and the outer surface of the head 18, is shifted by one protrusion when fitting. By this, the bonding angle between the substrates 2 is shown by a solid line.
, - can be maintained at either 02 shown by the dotted chain line, and in the case shown, O is set to 135° and 02 is set to 157.5°. Figure 9 shows the female type engagement. The inner surface shape of the holding portion 15 of the portion 11 and the outer surface shape of the head portion 18 of the male engaging portion 12 are both square, and the two substrates 2 are connected to each other at a single joining angle O, (this 172.5°) to prevent relative rotation.

Furthermore, FIG. 10 shows a male and female type engaging portion 11 as shown in FIG.
．． Eight unit sound absorbing members 1 each made by gluing a half-cylindrical rock wool sound absorbing material 3 at its cut surface are attached to one side of a substrate 2, which forms a connecting portion 10 by 12 plug-fittings. The joining angle of both substrates 2 at the connecting part 10 is set to 135
2 is a front view schematically showing the end face of a regular octagonal cylindrical sound absorbing body A formed by sequentially inserting and fitting the sound absorbing body A while maintaining the angle of the sound absorbing body at a stable angle. It can maintain its shape.

FIG. 11 shows a structure for preventing the male and female engaging portions 1 connected by the female and male engaging portions 11 and 12 from shifting in the direction of insertion and fitting, and the connection portion of the sound absorbing body shown in FIG. 10. 10 is an exploded perspective view of the main parts, in which a female threaded part 28 is formed on the inner peripheral surface of the end of the holding part 15 of the female type engaging part 11, and a base part 191 of the male type engaging part 12 is shown. When the end of the head 18 is cut off to an appropriate length and the inner joint parts 11 and 12 are inserted and fitted, by screwing the screw 29 to prevent removal into the threaded part 28 marked -E. , it is possible to prevent the male type engaging part 12 from moving in the direction of escape, and by providing this displacement prevention means at both ends of the connecting part 10, sound absorption that does not cause mutual displacement of the male type engaging parts 1 can be achieved. A body A can be constructed.

FIG. 12 shows a sound absorbing body Δ constructed by connecting a plurality of unit sound absorbing members 1 in parallel as described above, and a similar sound absorbing body A′, obtained by a method of connecting the middle sound absorbing member 1 in the longitudinal direction. FIG. 2 is a plan view showing the second side of the substrate of the
A part of the unit sound absorbing member 1 of the sound absorbing body A protrudes from the edge of the sound absorbing body A, and correspondingly, that part of the unit sound absorbing member 1 invagins at the end edge of the other sound absorbing body A', and The protruding portion of the substrate 2 has the same insertion-fitting structure as the connecting portions 10 of the hermaphroditic engagement portions 11 and 12 of the substrate 2 on both sides of the recessed portion, thereby achieving a flush connection state. . However, it is preferable to connect and hold the end portions of the connected sound absorbers A and A' on both sides using an appropriate support member such as a connecting clip as shown in FIG. In this case, the support member described above is not required.

Note that 1' is a short piece obtained by cutting the unit sound-absorbing member 1 fitted into the fitting portion of the end edge of the sound-absorbing body A.

FIG. 13 is a perspective view C showing the state of use of the protective material B of the sound absorbing material of the present invention, and the intermediate protective member 30 corresponds to the unit sound absorbing member 1 described above with the sound absorbing material 3 removed. Functional parts that are the same as those of the substrate 2 are given the same reference numerals, and a large number of similar through holes 13 are drilled in a distributed distribution on the same substrate surface as the substrate 2, and female engaging portions 11 and 11 are formed on both side edges of the substrate 2. A protected forest B is constructed in which a plurality of the male engaging portions 12 are connected by insertion and fitting to form a planar shape, a bent surface shape, or a polygonal cylindrical shape. An octagonal cylindrical protected forest B is provided to cover the outer peripheral surface of the rock wool cylindrical sound absorbing material 40.

This protective material B is adapted to the condition of the two surfaces of the flexible porous absorbing material, and is shaped into a flat or uneven refracting surface. It can be installed in contact with or with an appropriate air gap.

Furthermore, the protection area can be expanded by using a connecting means similar to that of the sound absorber described above.

Note that some unit sound absorbing members constituting the sound absorbing body of the present invention,
Some of the unit protection members that constitute and cover the sound-absorbing material should be replaced with a separate transparent material of the same cross-sectional shape if there is a light stage space inside or on the back side of the unit protection member, and then installed. It is also possible to form a window for use in the building, and it is also possible to use the substrate surface exposed to the outside as a light-reflecting surface for illumination, or to provide a pattern in one color on the core, and to obtain the design effect of a sound-absorbing construction surface by combining and arranging them. .

〔Effect of the invention〕

・18 As explained above, according to the present invention, the unit sound absorbing member and the unit protection member that utilize the substrates made of one or two types of extruded shapes that can be connected by mutual insertion fitting can change the external shape, External protection sound absorbers and sound absorbing protective materials that can easily respond to changes in conditions such as increases in surface area can be easily formed while maintaining a uniform connection surface of the board, and each unit member has a small volume and small size. Since it is lightweight, it is convenient to store, transport, and handle.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of a unit sound absorbing member constituting a sound absorbing body, Fig. 2 is a side view of the main part of the sound absorbing body, and Fig. 3 is a regular octagonal cylinder shape. Perspective view of the sound absorber of 4th
5 is a developed view of a support member in the form of a face plate, FIG. 6 is a perspective view of the support member in the form of a clip, and FIG. 7 is a partially sectional view. 8 and 9 are cross-sectional views of different embodiments of the coupling part insertion fitting structure, FIG. 10 is a front view schematically showing the end face of a regular octagonal cylindrical sound absorber in different embodiments, and FIG. 11 is the ff of the connection part
1. FIG. 12 is a plan view showing a state in which two sound absorbers are connected, and FIG. 13 is a perspective view of the sound absorbing material in use. DESCRIPTION OF SYMBOLS 1...Unit sound-absorbing member 2...Substrate 3...Sound-absorbing material 7...Outer surface protective layer 8...Sound-absorbing material layer 10...Connection part 11...Female engagement part 12...・Male engaging part 13
... Through hole 14.17 ... Protrusion 15 ... Holding part 16 ... Incision gap 18 ... Head 20 ... Support member 30 ... Protective material 40 ... Cylindrical shape Sucking 8 bodies A...
・Sound absorber B protective material

Claims (1)

[Claims] 1) The substrate (2) is a band-like extruded material having female engaging portions (11) and/or male engaging portions (12) formed on both side edges; ) A unit sound-absorbing member formed by drilling a large number of through-holes (13) distributed on one side and adhering a flexible porous sound-absorbing material (3) such as a fiber aggregate or a synthetic resin foam to one side. (1), a plurality of sound absorbing materials (3) are arranged in parallel on one side, and the male and female engaging parts (11) of the mutual board (2) are arranged in parallel on one side.
, 12), which are articulated and connected by insertion-fitting. 2) The insertion fitting structure of the male and female engaging portions (11, 12) in the connection portion (10) of the substrate of the unit sound absorbing member (1) is
The sound absorber according to claim 1, wherein the relative rotation of the substrates (2) is suppressed to maintain a constant joining angle selected from a single or multiple steps. 3), the connection part (10) of the substrate (2) of the unit sound absorbing member (1)
), the insertion-fitting structure of the male and female engaging portions (11, 12) enables relative rotation of the mutual substrates (2) over a wide angular range, and is a support member that suppresses relative rotation. 2. The sound absorber according to claim 1, wherein a constant joining angle is maintained by the attachment of (20). 4), a plurality of unit sound absorbing members (1) are connected in a cylindrical shape,
Any one of claims 1 to 3, wherein a substantially polygonal cylindrical sound absorbing material layer (23) made of parallel sound absorbing materials (3) is provided inside the polygonal cylindrical outer protective layer (22) formed by the substrate (2). The sound absorber described in . 5), one sound absorbing body has an edge where some of the unit sound absorbing members (1) protrude at its edge, and another sound absorbing body has an edge where some of the unit sound absorbing members (1) have an end protruding from its edge; The board (2) in the protruding part is fitted into the board (2) on one side or both sides of the fitted part, and the male and female engaging parts (11, 12) are inserted into the board (2) to absorb sound. 5. The method of connecting sound absorbing bodies according to claim 1, wherein the sound absorbing bodies are connected to each other. 6) A strip plate-like extruded material having female engaging portions (11) and/or male engaging portions (12) formed on both side edges is used as a substrate (2), and is distributed on the surface of the substrate (2). A unit protection member (30) having a large number of through holes (13) is formed into a planar shape, a refracted surface shape,
A sound-absorbing protective material characterized by being connected and connected in a polygonal cylindrical shape.