JP2969676B2 - Sound absorber - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound-absorbing structure used for acoustic adjustment and noise prevention, and more particularly, to protection of a flexible porous sound-absorbing material and a perforated plate covering the outer surface thereof. It is an object of the present invention to provide an assembling tubular or refracting surface-shaped sound absorber having improved workability and handleability in a sound absorber made of a material, and a method of connecting the same.

[Conventional technology]

Conventionally, it is common practice to attach sound-absorbing panels to ceilings, walls, etc. to prevent noise in factories, traffic routes, etc., and adjust room acoustics in music halls, theaters, etc.
It is also known to dispose a cylindrical sound absorber on a ceiling, a wall surface, or a sound field space, for example, as shown in Japanese Utility Model Application Laid-Open No. 62-186200.

The above-mentioned sound-absorbing panel is usually made of a flexible porous sound-absorbing material such as glass wool, rock wool, or a fiber-integrated plate, or a synthetic resin foam on one surface of a perforated plate such as a metal plate, a synthetic resin plate, or plywood. A bonded laminated plate is generally used, and a cylindrical sound absorber is formed by fitting a cylinder made of a porous metal plate to an outer surface of a cylindrical body made of the same flexible porous material as described above.

[Problems to be solved by the invention]

When the base surface is covered with a conventional sound-absorbing panel, a suitable construction of the sound-absorbing panel is achieved by abutment with a suitable sound-absorbing panel supporting means, but the construction work is troublesome, and the sound-absorbing panel itself does not bend and deform. Therefore, it is difficult to construct a curved surface, and in the case of a cylindrical sound absorber, it itself is bulky and it is troublesome to transport and handle. However, there are disadvantages such as bulky and inconvenient handling.

[Means for solving the problem]

The present invention has solved the above-mentioned problems in the conventional sound-absorbing panel and the cylindrical sound-absorbing body by means of a plug-in fitting connection means of a unit member using a strip-shaped extruded material having a connection engaging portion formed on the entire length of both side edges as a substrate. Things.

That is, the sound-absorbing body of the present invention uses a strip-shaped extruded material having connection engaging portions formed on the entire length of both side edges as a substrate, a large number of through-holes distributed on the substrate surface, and one surface thereof. A plurality of unit sound absorbing members each formed by bonding a flexible porous sound absorbing material such as a fiber aggregate or a synthetic resin foam to each other. A sound absorbing member in which adjacent unit sound absorbing members (1) adjacent to each other by a connecting portion into which a plug is fitted are held in a tubular or refracting surface shape while maintaining a joining angle refracted toward the sound absorbing material (3). The coupling engagement portion on the side edge of the substrate of one of the unit sound absorbing members constituting the coupling portion is a male engagement portion having an enormous head,
An inner-hole-shaped holding portion in which the coupling engaging portion on the side edge of the substrate of the other unit sound absorbing member can fit the enormous head of the male engaging portion, and a part of the holding portion. A sound absorbing body characterized in that it is a female-type engaging portion that cannot pass through the head but has an incision at an interval greater than the thickness of the base of the head. As the unit sound absorbing member, one type of unit sound absorbing member having a male engaging portion on one side edge of the substrate and a female engaging portion on the other side edge is used, or a male engaging portion on both side edges of the substrate. The combination of two types of unit sound absorbing members, one having a female portion and the other having female engaging portions formed on both side edges of the board, is used for the insertion fitting structure of the male and female engaging portions. Preventing relative rotation, having a concavo-convex engagement portion that maintains a fixed joining angle selected from single or multiple steps, The male-female male and female mating plug-in fitting structure maintains a fixed joint angle by mounting a support member that suppresses relative rotation while enabling relative rotation of the boards in a wide angle range. To do,
One of the sound absorbing members having the above-described configuration has an end portion of some unit sound absorbing members protruding at an edge in the longitudinal direction, and another sound absorbing member has end portions of some unit sound absorbing members at an edge in the longitudinal direction. A method of connecting the sound absorbers in the longitudinal direction by inserting the male and female engagement portions into the boards on one or both sides of the indented portion so that the protruding portion of the substrate is indented. The invention of the present invention is also included.

Each of the substrates of the unit sound absorbing member is a strip-shaped extruded member of metal or synthetic resin having a coupling engaging portion formed on the entire length of both side edges, and a plurality of the substrates are connected to one side edge of the coupling member. The area in the width direction is enlarged by inserting and connecting the male engagement portion of the joint portion and the female engagement portion of the coupling engagement portion on the other side edge from the mutual end surfaces, and further increases the width direction. A part of the base body of the connecting body is projected in the longitudinal direction, and a part of the substrate of the other width direction connecting body is inserted and fitted into a portion in which the substrate is recessed in the longitudinal direction, so that the connection can be extended in the longitudinal direction. In this case, the connecting portion can be stably and firmly obtained without forming a gap in the fitted connecting portion.

The substrate has a female engaging portion formed on the entire length of one side edge thereof, and a male member having a male engaging portion and a single molding material formed on the entire length of the other side, or a female member having female engaging portions formed on both side edges. Either one of the two types of combinations of the mold members having the male engaging portions on both side edges is used.

The substrate is preferably an extruded aluminum material, and is usually 10 to 30 cm wide and 100 to 300 mm in terms of transportation and handling.
A rectangular plate with a size range of cm length is suitable. A large number of through holes distributed on the substrate surface are provided with an opening size and an opening interval that can prevent damage and deformation of the flexible porous sound absorbing material due to external force, and the opening area is for transmitting sound energy to the sound absorbing material. It is necessary that they do not hinder the aperture ratio, which is appropriately determined usually in the range of 5% to 80%.

In the plug-in fitting structure between the female-type engaging portion and the male-type engaging portion, the head of the male-type engaging portion is held in the holding portion of the female-type engaging portion in its cross-sectional shape. Has a dimensional condition in which the base of the head is inserted through the incision of the holding portion and the head cannot pass through the incision, and the fitting between the head and the holding portion is relatively rotatable. Or a phase angle selected from a single or a plurality of stages can be maintained, or the connection between the two substrates to be joined is determined by the distance between the cutout of the holding portion and the base of the head and the cutout forming position. The angle or the rotation range can be determined.

The sound absorbing body of the present invention includes a plurality of unit sound absorbing members each formed by bonding a flexible porous sound absorbing material having an appropriate cross-sectional shape to one surface of a substrate having a large number of through holes distributed and formed on the plate surface as described above. By connecting and connecting the edges of the male and female type engagement portions by insertion fitting, a protective surface having an integral multiple of the effective width of the board and a sound absorbing material arranged in parallel on one surface thereof have a refraction surface shape or a polygonal cylindrical shape. In addition, a plurality of sound absorbers under these configurations are connected in that direction by a longitudinal insertion fitting of the board at the protruding indented portion of a part of the male and female engagement portions of each other. A further enlarged form can be obtained by the method.

In addition, the sound absorbing body in which a plurality of unit sound absorbing members are connected and connected may be provided with an appropriate supporting member for suppressing the relative rotation of the adjacent unit members as needed, thereby maintaining a stable form. it can.

[Action]

As described above, the sound absorbing body of the present invention is configured by connecting a plurality of unit sound absorbing members each formed of a substrate in which a flexible porous sound absorbing material is held on one surface of a perforated plate by plugging fitting on both sides of the substrate. Therefore, a sound-absorbing coating or a polygonal cylindrical sound-absorbing structure adapted to the surface of the skeleton such as a curved surface or a column can be easily formed while holding the uniform protective outer surface to which the substrate is connected.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a unit sound absorbing member 1 constituting a sound absorbing unit,
FIG. 2 is a side view of a main part of a sound absorber A in which a plurality of unit sound absorbing members 1 are connected and connected.
1, a substrate made of an aluminum strip-shaped extruded material having a male engaging portion 12 formed on the other side edge; 13 is a plurality of through holes distributed on the surface of the substrate 2; This is a sound absorbing material made of a rock wool plate adhered to almost the entire surface of one side.

Reference numeral 10 in FIG. 2 denotes a connecting portion between the substrates 2 and a female engaging portion.
11 has a holding portion provided with an incision in a part of an annular shape projecting downward from the side edge of the plate, and the male engaging portion 12 has a circular cross section at the tip of the base projecting obliquely downward from the side edge of the plate. A plurality of unit sound-absorbing members 1 are connected to each other with an enormous head and are inserted and fitted together, and are connected to a plurality of unit sound-absorbing members 1 in a refracting surface shape having a joining angle from a flat shape like a solid line to a dashed line. 3 constitutes a sound absorbing body A in which one side is arranged in parallel.

FIG. 3 is a perspective view of a regular octagonal tubular sound absorber A formed by connecting eight of the unit sound absorbing members 1, and FIG. A substantially octagonal sound absorbing material layer 8 made of juxtaposed sound absorbing materials 3 is formed inside the octagonal cylindrical outer surface protection layer 7, and penetrates the opposed sound absorbing material 3 of the unit sound absorbing member 1 to form an inner surface of the substrate 2. The opposed unit sound absorbing member 1 is fixed by a support member 20 including a large-diameter straight rod 21 having both ends in contact with each other, a small-diameter screw shaft 22 penetrating through the substrate 2 provided at both ends thereof, and a nut 23 screwed to this. By holding them in parallel at intervals, the relative rotation of the substrates 2 is suppressed, and the regular octagonal cylinder shape of the sound absorber A is maintained.

The support member 20 connects and supports two opposed unit sound absorbing members 1 when forming the rectangular tubular sound absorbing body A,
The sound absorbing body A can be configured by sequentially inserting and fitting other unit sound absorbing members 1.

Instead of the support member 20 using the large-diameter straight rod 21 or the like, a face plate-like support member that can be fitted on the inner surface of the polygonal cylindrical outer surface protection layer 7 formed by the substrate 2, or fitted on both sides of the connecting portion 10. A clip-shaped support member can be used,
FIG. 5 shows a face plate-like support member 20 for maintaining a regular octagonal cylinder.
By bending the tongue piece 25 in the same direction at a right angle with a broken line shown by a dotted line, a support member 20 having a fitting portion of the bent tongue piece 25 on the periphery of the regular octagonal face plate 24 is obtained. FIG. 6 is a perspective view of the clip-shaped support member 20,
By fitting the tongue pieces 27 folded in a U-shape on both sides of the rectangular bottom plate 26, fitting portions of the unit sound absorbing members 1 on both sides of the connecting portion 10 to the substrate 2 are formed, as shown by a dashed line at the center of the bottom plate 26. The bent surface can be supported by bending.

FIGS. 7, 8, and 9 are cross-sectional views showing different modes of the insertion fitting structure of the male and female engaging portions 11, 12 in the connecting portion 10 of the two unit sound absorbing members 1, respectively. The figure shows a female engaging part consisting of an annular holding part 15 with an incision 16 formed.
11 and the male engaging portion 12 composed of an enormous head 18 having a circular cross section with the edge of the substrate 2 as a base 19 are vertically symmetrical, and the rotation axis in the fitted state is on the center line of the substrate 2. And has a rotation range of approximately 45 ° above and below the plane joining state shown in the drawing.

FIG. 8 shows a fitting structure having a concave-convex engaging portion that can selectively lock the joining angle of the substrate 2 at any of two specific stages,
The female-type engaging portion 11 is formed of an annular holding portion 15 having a cutout portion 16 protruding outward from the end of the substrate 2, and is formed of two ridges 14 parallel to the inner surface of the holding portion 15. Three sets of locking portions are formed at a constant phase interval.

On the other hand, the male engaging portion 12 has an enormous head 18 at the tip of a base 19 projecting obliquely outward from the end of the substrate 2, and the outer surface of the through portion 18 has the inner surface of the holding portion 15. There are formed three sets of parallel projections 17 which can be engaged with a predetermined phase relationship in correspondence with the three projections 14 formed in the shape of the projection 14.

Then, the engagement phase relationship between the two engaging portions formed of two parallel ridges 14 and 17 on the inner surface of the holding portion 15 and the outer surface of the head 18 is shifted by one ridge. By joining, the joint angle between the substrates 2 can be maintained at either θ ₁ indicated by a solid line or θ ₂ indicated by a dashed line. In the illustrated case, θ ₁ is 135 ° and θ ₂ is 157.5 °. The joint angle is set.

FIG. 9 shows that the two substrates 2 are formed by the insertion and the engagement of the concave and convex engaging portions in which the inner surface shape of the holding portion 15 of the female engaging portion 11 and the outer surface shape of the head portion 18 of the male engaging portion 12 are both square. The members are connected to each other while maintaining a single joint angle θ ₃ (in this case, 172.5 °) and suppressing their relative rotation.

Further, the male and female engaging portions 11, 1 as shown in FIG.
The board 2 in which the connecting portion 10 is constituted by the insertion fitting structure of 2
The eight unit sound-absorbing members 1 each having a half-walled cylindrical rock wool sound-absorbing material 3 adhered to one surface thereof are used to maintain the joint angle of the two substrates 2 at the connecting portion 10 at 135 ° in order. FIG. 4 is a front view schematically showing an end surface of a regular octagonal tubular sound absorber A formed by inserting and fitting, in which case the support member described above is used.
The stable form can be maintained without using 20 in particular.

FIG. 11 is an exploded view of a structure for preventing the unit sound absorbing member 1 connected by the male and female type engaging portions 11 and 12 from shifting in the insertion and fitting direction, and the connecting portion 10 of the sound absorbing body shown in FIG. The female screw portion 28 is formed on the inner peripheral surface of the end portion of the holding portion 15 of the female engaging portion 11, and the base portion 19 and the head portion 18 of the male engaging portion 12 are shown in perspective views of main parts. In the state where the end of is cut off at an appropriate length, and both engagement portions 11, 12 are inserted and fitted,
By screwing the screw 29 for retaining to the screw part 28, the movement of the male engaging part 12 in the escape direction can be prevented.Therefore, by providing the slip preventing means at both ends of the connecting part 10, The sound absorber A in which the unit sound absorbing members 1 do not shift from each other can be configured.

FIG. 12 shows a case where a plurality of unit sound absorbing members 1 are connected in parallel as described above and a sound absorbing member A ′ similar to the sound absorbing member A is obtained by a method of connecting the sound absorbing members A ′ in the longitudinal direction of the unit sound absorbing member 1. FIG. 4 is an exploded plan view showing the substrate 2 side, in which a unit sound absorbing member 1 of a part of the sound absorbing body A protrudes from an edge of the sound absorbing body A, and correspondingly, at an edge of another sound absorbing body A ′. A part of the unit sound absorbing member 1 is recessed, and the protruding portion of the board 2 is on the same side as the connecting portion 10 of the male and female engaging portions 11 and 12 on both sides of the recessed portion of the board 2. With the structure, a flush connection state can be obtained. However,
It is desirable that both side edge portions of the connected sound absorbers A and A 'be connected and held by a suitable support member, for example, a connection clip as shown in FIG.

In addition, 1 'is a short object which cut | disconnected the unit sound absorbing member 1 fitted in the indentation part of the edge of the sound absorbing body A.

Further, the protection area can be enlarged by the same connecting means as the above-described sound absorber.

Further, some unit sound absorbing members constituting the sound absorbing body of the present invention may be replaced with a transparent material having the same cross-sectional shape as that of the substrate when an illumination lamp is installed inside or on the back of the sound absorbing body. In addition, the lighting window can be formed, and the surface of the substrate exposed to the outside can be used as a light reflecting surface for lighting, or a pattern or color can be provided on the surface, and the design of the sound absorbing surface can be designed according to the combination position. You can also get a positive effect.

〔The invention's effect〕

As described above, according to the present invention, a plurality of units are stably and strongly connected to each other by a unit sound absorbing member using a substrate made of one or two types of extruded mold members that can be connected by mutual insertion fitting. An external protective sound absorber that can easily cope with conditions such as fluctuations and increase in surface area can be easily formed while maintaining a uniform connection surface of the substrate, and each unit member is small in volume, small in size, and lightweight. Therefore, effects such as convenience in storage, transportation, and handling are obtained.

[Brief description of the drawings]

Drawings show an embodiment of the present invention, FIG. 1 is a perspective view of a unit sound absorbing member constituting a sound absorbing body, FIG. 2 is a side view of a main part of the sound absorbing body, and FIG. Perspective view of sound absorber, fourth
FIG. 5 is a front view showing a part of the cross section, FIG. 5 is an exploded view of a face plate-shaped support member, FIG. 6 is a perspective view of a clip-shaped support member, FIG. 7, FIG. FIG. 10 is a cross-sectional view of a connection part insertion fitting structure of a different aspect, FIG. 10 is a front view schematically showing an end face of a different aspect of a regular octagonal tubular sound absorber, and FIG. 11 is a male-female engagement part of the connection part. FIG. 12 is an exploded plan view showing a state where two sound absorbers are connected to each other. 1 unit sound absorbing member, 2 substrate, 3 sound absorbing material, 7
... outer protective layer 8 ... sound absorbing material layer, 10 ... connecting part, 11 ... female type engaging part, 12
… Male engaging part, 13… Through hole, 14,17 …… Protrusion, 15… Hugging part, 16… Incision part, 18 …… Head, 20 …… Support member A …… Sound absorption body

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Shinta Yamamura, Inventor 259-1 Tsukimidaida, Hodogaya-ku, Yokohama, Kanagawa Prefecture (72) Inventor Kuniaki Shimizu 2-8-2, Minamihachiman, Ichikawa-shi, Chiba Prefecture (72) Inventor Noboru Oneda Osaka 6-224 Kaiyamacho, Sakai City, Showa Aluminum Co., Ltd. (72) Inventor Kunitsu Uchida 6-224 Kaiyamacho, Sakai City, Osaka Prefecture (72) Toshiyuki Yamada, 6 Tokaiyuki Sayama City, Osaka Prefecture -224 Inside Showa Aluminum Co., Ltd. (56) References JP-A-49-31118 (JP, A) JP-A-51-27850 (JP, A) Full-scale operation Sho-63-8309 (JP, U) −31522 (JP, Y2)

Claims (1)

(57) [Claims] An extruded strip-shaped material having a connecting engagement portion formed on the entire length of both side edges is used as a substrate (2), and a large number of through holes (13) are formed in the surface of the substrate (2). At the same time, a plurality of unit sound absorbing members (1) each formed by adhering a flexible porous sound absorbing material (3) such as a fiber assembly or a synthetic resin foam on one surface thereof, and each sound absorbing material (3) on one side. Connecting part (10) which is arranged in parallel with each other, and the connecting engaging parts of the boards (2) are inserted and fitted.
The sound absorbing body (1) adjacent to the sound absorbing member (1) is connected to the sound absorbing material (3) side in a tubular or refracting surface shape while maintaining a joining angle refracted toward the sound absorbing material (3), and the connecting portion (10) A male engaging portion (12) having an enormous head (18), and a coupling engaging portion on a side edge of the substrate (2) of the one unit sound absorbing member (1) constituting the other unit. Substrate (2) for sound absorbing member (1)
An inner-hole-shaped holding portion (15) in which a connecting engaging portion on a side edge of the male-shaped engaging portion (12) can fit the enormous head (18) of the male-type engaging portion (12).
And an incision (1) at an interval greater than the thickness of the base of the head (18) but cannot pass through the head (18),
6), and the insertion fitting structure of the male and female engaging portions (11, 12) prevents relative rotation of the substrates (2). A sound absorber having a concave-convex engagement portion for maintaining a joining angle selected from a single or a plurality of stages.