CN2157951Y

CN2157951Y - Sound proofing plate

Info

Publication number: CN2157951Y
Application number: CN 93228606
Authority: CN
Inventors: 王涤海
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-25
Filing date: 1993-06-25
Publication date: 1994-03-02
Anticipated expiration: 2003-06-25

Abstract

The utility model relates to a sound silencing plate for eliminating noise. Sound silencing holes with hole cavities which are expanded inwards from hole openings are distributed on a base plate composed of single-layer plates or multilayer composite plates. Because the hole openings are small and the hole cavities are big, each sound silencing hole becomes a black hole for noise, and the sound-silencing effect is very good. The utility model can be made into various sound silencing devices.

Description

Sound proofing plate

The utility model relates to a kind of sheet material that can eliminate noise, can be used for decorating indoor and outdoor wall, ceiling, also can be used for making the apparatus of various protection or damping noise.

In the prior art, prevent the technical measures of noise, the one, eliminate or the control noise source, the 2nd, prevent propagation of noise.Need to have the material of damping or sound absorption characteristics for this reason, now Chang Yong material has the plate that porous absorption materials such as glass wool, asbestos, foamed plastics are made, also by toot the type structure of forming by orifice plate altogether, it is to have cylindrical hole on the plate face, add an air layer behind at it, its weak point is, eliminated noise weak effect not only, cost is also higher, should not promote the use of.

It is a kind of simple in structure that the purpose of this utility model is to provide, the low and extraordinary muffler plate of noise elimination effect of cost.

Technical solution of the present utility model is, by substrate be distributed in the muffler plate that the sound attenuation hole on the substrate is formed, it is characterized in that substrate is lamina or multilayer composite sheet, and sound attenuation hole has from the aperture to the vestibule of intramedullary expansion.

Advantage of the present utility model is, vestibule is big because the aperture of sound attenuation hole is little, be vestibule structure to intramedullary expansion, after sound wave enters sound attenuation hole, at the vestibule wall, through repeatedly reflecting and reflecting and decay rapidly, the probability of overflowing from the aperture is very little, therefore, be distributed in sound attenuation hole one by one on the real estate and all become " black hole " of sound wave, can only advance and to go out, sound absorption, noise elimination effect highly significant, and have simple in structure, be easy to make, the characteristics that cost is low, noise elimination effect of the present utility model mainly is by the decision of the shape of sound attenuation hole, and it is little with the character relation of substrate material own, the muffler plate material can be chosen arbitrarily as required, can choose metal sheet in outdoor utility, plastic plate, ceramic wafer, glass plate etc., at the indoor timber of selecting for use, plastics, asbestos, rubber, gypsum etc., therefore, the application of muffler plate is not limited by ambient conditions, compliance is strong, can be widely used in building, industrial and agricultural production, life, traffic, car and boat, broadcast communication, culture, education and public health, all trades and professions such as environmental protection and military affairs; The shape in sound attenuation hole aperture can adopt various difformities as required, such as circular, oval, square, quincunx or other shapes arbitrarily, and can be arranged into various patterns regularly, thereby also can play the effect of decorative panel.

Following accompanying drawing has been described embodiment of the present utility model.

Fig. 1～Fig. 9 is a structural representation of the present utility model.

Figure 10～Figure 13 is the utility model plate face sound attenuation hole distribution shape schematic diagram.

Below in conjunction with accompanying drawing the utility model is described in detail, the utility model is by substrate and be distributed in the orifice structure that the sound attenuation hole on the substrate is formed.Wherein substrate 1 can be a lamina, can also be multilayer composite sheet.Every material that can be processed into plate all can be made substrate, such as metal, plastics, timber, rubber, pottery, asbestos, stone material, glass, rock wool, gypsum and composite material etc., should choose corresponding material with different application scenarios according to different purposes.Noise elimination effect of the present utility model mainly come in the special construction of sound attenuation hole, promptly therefore the sound attenuation hole structure that vestibule is big to the aperture that the hole intramedullary expansion forms is little from the aperture when implementing the utility model, should be specifically noted that the structure design and the distribution of sound attenuation hole 2.Figure 1 shows that the simplest a kind of muffler plate structure, it is that the tapered sound attenuation hole 2 of distribution circle constitutes on substrate 1, and substrate is a single layer structure, and sound attenuation hole is a through hole, distributes by fork row on the plate face.Aperture one side aperture 3 one sides are towards noise source during use, and the macropore side is attached on metope or the similar attachment surface.When the structure more complicated of sound attenuation hole 2, sound attenuation hole such as urn type vestibule shown in Figure 2, the sound attenuation hole of the ball-type vestibule that Fig. 3 shows, the vestibule structure of arbitrary shape shown in Figure 4, sound attenuation hole with calabash shape vestibule shown in Figure 5, blossom type vestibule shown in Figure 8, multiaspect build vestibule shown in Figure 9 etc.Because the vestibule of these sound attenuation holes all be from the aperture 3 to intramedullary expansion, after retract into blind hole again, if use the lamina structure, the processing of sound attenuation hole will be very difficult or impossible, therefore, the utility model has adopted the MULTILAYER COMPOSITE plated construction.As shown in FIG., the structure of sound attenuation hole is complicated in any case, as long as it is divided into two-layer or two-layer above multi-layer compound structure, sound attenuation hole is counterpart on each laminate, the simple hole that all can become unidirectional expansion or dwindle.Such as, the calabash shape vestibule among Fig. 5 is divided into four-sheet structure with it, and then the counterpart of vestibule on every laminate all becomes the very easily simple hole of processing.The utility model utilizes this principle exactly, has solved the processing problems to the complicated sound attenuation hole of ball-type, urn type and arbitrary shape.Its concrete manufacturing process is: the earlier thickness that determines the number of plies of composite plate, every laminate by the shape and the used material of sound attenuation hole and the shape and the distribution equidimension in the hole on every laminate, produce each laminate then respectively and process corresponding hole onboard, at last each laminate is made muffler plate by the level amalgamation.Embodiment with circular orifice and urn type vestibule structure sees Figure 10 and Fig. 6; Embodiment with elliptical orifice and urn type vestibule structure sees Figure 11 and Fig. 7; Embodiment with quincunx aperture and blossom type vestibule structure sees Figure 12 and Fig. 8; Embodiment with square aperture and multiaspect build vestibule structure sees Figure 13 and Fig. 9.Substrate 1 adopts two-layer composite plate structure among these embodiment.4 is the surface layer plate among the figure, is fixed on the surface of substrate, has the hole identical with orifice shapes above, and outwards is extended to funnel shaped from the aperture.It can protect the plate face and the aperture of muffler plate injury-free on the one hand, also helps sound wave on the other hand and sucks better in the vestibule, improves the noise elimination effect.Because sound attenuation hole is arranged on the plate face regularly, aperture 3 forms graceful decorative pattern on the plate face, make muffler plate have the function of decorative panel concurrently, among Figure 10～three kinds of embodiment shown in Figure 12, adopt two kinds of structures that sound attenuation hole is spaced apart of size, be in order to enlarge the occupation rate of sound attenuation hole on the plate face, to improve the noise elimination effect.The processing of sound attenuation hole should be taked corresponding technology according to different materials, specification and processing conditions, as, to plastic material, each laminate of muffler plate and on the hole, by mold injection molding, then with each laminate by the bonding one-tenth muffler plate of bonding agent; When adopting the shaving board material, can be by the thermoforming way, process each laminate and on the hole, pass through the bonding one-tenth muffler plate of bonding agent then, surface layer plate 4 can adopt paper overlaid plywood; The pottery muffler plate processes each laminate with blank earlier, and the bonding one-tenth muffler plate in dry back is integrally sintered; To metal material, the processing of each laminate can be adopted casting, boring, different process such as hot-forming, that connection technology between each laminate can adopt is bonding, welding or riveted joint, also can adopt screw, bolt to connect, concrete which kind of technology that adopts, fibrous root is chosen flexibly according to the specification of material, muffler plate.Example application as muffler plate: make the noise elimination post with muffler plate, stand in noisy going up in the street, perhaps use muffler plate, decorate the exterior wall of building in the street such as the noise elimination ceramic tile, make it to become the noise elimination wall, the noise that inhibition is gone up in the street improves environment; Muffler plate is applied to volute of blower and inlet and outlet piping, can produces the low noise blower fan, make automobile exhaust pipe, can eliminate automobile noise with muffler plate; Be used for the great hall, indoor walls such as movie theatre, theater, station are decorated, and can play and eliminate noise and improve acoustic effect, help people's health.

Claims

1, a kind of muffler plate that is used to eliminate noise is made up of substrate (1) and the sound attenuation hole (2) that is distributed on the substrate (1), it is characterized in that substrate (1) is lamina or multilayer composite sheet, and sound attenuation hole (2) has from the aperture to the vestibule of intramedullary expansion.

2, muffler plate according to claim 1, the orifice shapes that it is characterized in that sound attenuation hole (2) is circular, square, oval, quincunx, polygon or arbitrary shape.

3, asking 1 described muffler plate according to right, it is characterized in that the vestibule of sound attenuation hole (2) is shaped as sphere, doliform, cone-shaped, polyhedron shape or arbitrary shape.

4,, it is characterized in that substrate (1) is to make with metal, plastics, timber, rubber, gypsum, pottery, asbestos or rock wool material according to claim 1,2 or 3 described muffler plates.

5,, it is characterized in that sound attenuation hole (2) is distributed on the plate face of substrate regularly according to claim 1,2 or 3 described muffler plates.