Grating sound absorption assembly

Abstract

A plurality of grating strips are fixed on a plurality of keels in a nailing mode and arranged at intervals in the width direction of a mounting frame, the cross section of each grating strip is integrally arranged in a trapezoid shape, the vertex angle of the cross section of each grating strip ranges from 90.5 degrees to 95 degrees, and the two ends, in the width direction, of each grating strip are inwards folded at the position of the bottom edge to form bottom slits; according to the grating sound absorption assembly provided by the utility model, the plurality of grating strips are nailed and fixed on the plurality of keels and are arranged at intervals in the width direction of the mounting frame, so that the fixing effect of the grating strips is excellent, the possibility of vibration is reduced, the cross sections of the grating strips are integrally arranged in a trapezoidal shape, and the trapezoidal surfaces of the grating strips can form an excellent diffusion effect; the sound absorption effect is assisted; the cross sections of the grid strips are trapezoidal, so that the fixing stability of the grid strips is improved; after sound waves are transmitted in from the gaps between the grating bars and reach the bottom slits, a resistant silencing effect is formed, and the effect of absorbing low-frequency noise is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of sound absorption structures, in particular to a grille sound absorption component. Background Art

[0002] The sound-absorbing components have various structural forms. The most common one is the combination of perforated sound-absorbing panels and sound-absorbing cotton. At present, there is also a combination of sound-absorbing strips and sound-absorbing cotton to form a sound-absorbing bottom slit. Compared with perforated sound-absorbing panels, sound-absorbing strips have a better effect on absorbing low-frequency noise, and their processing difficulty and material usage are lower.

[0003] At present, the fixing form of the sound-absorbing strips is often clamped, and there are certain risks in the fixing stability, which are specifically manifested in the risk of longitudinal sliding and the risk of noise caused by the loose clamping. The current structure of the sound-absorbing strips is not conducive to storage and transportation, and the structure of the sound-absorbing strips also has risks to its own structural stability. Utility Model Content

[0004] The main purpose of the utility model is to provide a grille sound-absorbing component, aiming to solve the current problems of fixing hidden dangers of sound-absorbing strips and the problem that there is still room for improvement in sound-absorbing performance.

[0005] In order to achieve the above object, the utility model provides a grille sound absorbing assembly, comprising:

[0006] The installation frame is frame-shaped and has a front opening in the thickness direction to form an installation opening;

[0007] A plurality of keels are arranged and fixed at intervals in the width direction of the installation opening;

[0008] A sound absorbing member, arranged in the installation frame;

[0009] A plurality of grille bars are nailed and fixed on the plurality of keels and arranged at intervals in the width direction of the installation frame, the cross section of the grille bar is arranged in a trapezoidal shape as a whole, the side of the grille bar away from the keel is the top side, the side of the grille bar combined with the keel is the bottom side, the top angle of the cross section of the grille bar is 90.5 to 95 degrees, the two ends of the grille bar in the width direction are inwardly retracted at the position of the bottom side to form a bottom slit, the thickness of the bottom slit is 0.5 to 2 mm, and the width of the bottom slit is 10% to 35% of the width of the grille bar;

[0010] Wherein, the perforation rate of the front side of the grille sound absorbing component is between 15% and 35%.

[0011] Furthermore, the sound absorbing member comprises a plurality of sub-sound absorbing layers stacked in a thickness direction, wherein a difference is formed in surface density between the plurality of sub-sound absorbing layers.

[0012] Furthermore, the grille sound absorbing assembly further includes a first sound-transmitting cloth layer, and the first sound-transmitting cloth layer is laid on a plane formed by the plurality of keels.

[0013] Furthermore, the first sound-permeable fabric layer is made of non-combustible fiber.

[0014] Furthermore, the inner wall in the width direction and / or the inner wall in the length direction of the installation frame is provided with a first mounting platform and a second mounting platform spaced apart in the height direction, the sound absorbing component is clamped between the first mounting platform and the second mounting platform, and the plurality of keels are installed on the first mounting platform.

[0015] Furthermore, a third mounting platform is provided at the top of the outer wall of the mounting frame in the width direction and / or the length direction.

[0016] Furthermore, the grille bars at one end of the installation frame in the width direction are aligned with the installation frame, and the width of the third installation platform is half of the distance between adjacent grille bars.

[0017] Furthermore, the keel is an inorganic plate.

[0018] Furthermore, the grille sound-absorbing assembly also includes a second sound-permeable cloth that seals the back side of the installation frame, and the second sound-permeable cloth is made of non-combustible fiber material.

[0019] Furthermore, the cross section of the grille bar is connected with a reinforcing bone in the thickness direction.

[0020] The utility model provides a grille sound-absorbing assembly, in which a plurality of grille bars are nailed and fixed on a plurality of keels and are arranged at intervals in the width direction of the installation frame, so that the fixing effect of the grille bars is excellent and the possibility of vibration is reduced, and the cross-section of the grille bars is arranged in a trapezoidal shape as a whole, and the trapezoidal surface of the grille bars can form an excellent diffusion effect, thereby assisting the sound absorption effect; the cross-section of the grille bars is trapezoidal, so the possibility of deformation of the grille bars themselves is reduced, and the stability of the fixing of the grille bars is improved; after the sound waves are transmitted from the gaps between the grille bars, they form a resistant sound-absorbing effect after reaching the position of the bottom slits, which is beneficial to the absorption effect of low-frequency noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional schematic diagram of the installation frame in the grille sound absorbing assembly of the first embodiment of the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of a grille bar in a grille sound absorbing assembly of the first embodiment of the utility model;

[0023] Figure 3 It is a cross-sectional schematic diagram of the grille sound absorbing assembly of the first embodiment of the utility model;

[0024] Figure 4 yes Figure 3 Local magnification of

[0025] Figure 5 It is a cross-sectional schematic diagram of a grille bar in a grille sound absorbing assembly of a second embodiment of the utility model;

[0026] Figure 6 It is a cross-sectional schematic diagram of a grille sound absorbing assembly according to a second embodiment of the utility model;

[0027] Figure 7 yes Figure 6 Local magnification.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "one", "said", "above", and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements, units, modules, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and / or groups thereof. It should be understood that when we refer to an element as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element, or there may be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0031] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless specifically defined as here.

[0032] Reference Figures 1 to 7 In one embodiment of the utility model, a grille sound absorbing assembly includes:

[0033] The mounting frame 100 is frame-shaped and has a mounting opening 110 formed on the front opening in the thickness direction;

[0034] A plurality of keels 200 are arranged and fixed at intervals in the width direction of the installation opening 110;

[0035] The sound absorbing member 300 is disposed in the installation frame 100;

[0036] A plurality of grille bars 400 are nailed and fixed on a plurality of the keels 200 and arranged at intervals in the width direction of the installation frame 100. The cross section of the grille bar 400 is arranged in a trapezoidal shape as a whole. The side of the grille bar 400 away from the keel 200 is a top side 410, and the side of the grille bar 400 combined with the keel 200 is a bottom side 420. The top angle of the cross section of the grille bar 400 is 90.5 to 95 degrees. Both ends of the grille bar 400 in the width direction are retracted at the position of the bottom side 420 to form a bottom slit 421. The thickness of the bottom slit 421 is 0.5 to 2 mm, and the width of the bottom slit 421 is 10% to 35% of the width of the grille bar 400.

[0037] Wherein, the perforation rate of the front side of the grille sound absorbing component is between 15% and 35%.

[0038] In the prior art, the sound-absorbing slats are often fixed in a clamping manner, which has certain hidden dangers in the fixing stability, specifically the hidden dangers of longitudinal sliding and the hidden dangers of noise caused by loose clamping; at the same time, the structure of the sound-absorbing slats is not conducive to warehousing and transportation, and the structure of the sound-absorbing slats also has hidden dangers to its own structural stability.

[0039] The grille sound absorption assembly provided by the utility model includes a mounting frame 100, which is frame-shaped and has a mounting opening 110 formed on the front side in the thickness direction. The mounting frame 100 can be in various types of combined forms, for example, four frame bars can be connected to each other to form the mounting frame 100, and the structures of the frame bars can be consistent or different from each other. The front side of the mounting frame 100 in the thickness direction is open to form the mounting opening 110, and the back side of the mounting frame 100 in the thickness direction can be open or closed, specifically matching the mounting base surface.

[0040] A plurality of keels 200 are arranged and fixed at intervals in the width direction of the mounting opening 110. The fixing methods of the keels 200 on the mounting frame 100 can be various, which are not limited in this embodiment. For example, the keel 200 can be fixed on the mounting frame 100, or a protruding edge can be provided on the mounting frame 100, and the keel 200 is fixed by nailing. It should be noted that the fixing of the keel 200 is not limited to the thickness direction, and can also be the side or end surface. The length direction of the keel 200 is consistent with the length direction of the mounting frame 100 or the width direction of the mounting frame 100, preferably consistent with the width direction of the mounting frame 100.

[0041] The sound absorbing member 300 is disposed in the installation frame 100. The sound absorbing member 300 may be a porous material or a fiber material, etc. For example, the sound absorbing member 300 may be various types of sound absorbing cotton. The sound absorbing member 300 is enclosed in the installation frame 100 by the keel 200.

[0042] A plurality of grille bars 400 are nailed and fixed on a plurality of keels 200 and arranged at intervals in the width direction of the mounting frame 100. Sound-absorbing slits are formed by the grille bars 400. The perforation rate of the front surface of the grille sound-absorbing assembly is between 15% and 35%. In a typical size structure, the grille bar 400 is 2 cm wide and 1 cm high, and the spacing between two adjacent grille bars 400 in the width direction is 1 cm. The cross section of the grille bar 400 is arranged in a trapezoidal shape as a whole, so when the sound wave diffuses to the surface of the grille bar 400, the trapezoidal surface of the grille bar 400 can form an excellent diffusion effect, reflecting the sound wave to the widest possible area, and assisting the sound absorption effect. Specifically, the side of the grille bar 400 away from the keel 200 is the top edge 410 of the trapezoid, and the side of the grille bar 400 combined with the keel 200 is the bottom edge 420 of the trapezoid. The cross section of the grille bar 400 is a trapezoid, so the possibility of deformation of the grille bar 400 itself is reduced, and the stability of the fixing of the grille bar 400 is improved. The top angle of the cross section of the grille bar 400 is 90.5 to 95 degrees. When the top angle is too large, it is not conducive to the appearance effect and the sound absorption effect of the slit. The two ends of the grille bar 400 in the width direction are retracted at the position of the bottom edge 420 to form a bottom slit 421. The thickness of the bottom slit 421 is 0.5 to 2 mm, and the width of the bottom slit 421 is 10% to 35% of the width of the grille bar 400. After the sound wave enters from the gap between the grille bars 400, it forms a resistance sound-absorbing effect after reaching the position of the bottom slit 421; and it also forms a slit sound-absorbing effect when entering the bottom slit 421.

[0043] In summary, multiple grille bars 400 are nailed and fixed on multiple keels 200 and arranged at intervals in the width direction of the mounting frame 100, so that the fixing effect of the grille bars 400 is excellent and the possibility of vibration is reduced. The cross-section of the grille bars 400 is trapezoidal as a whole, and the trapezoidal surface of the grille bars 400 can form an excellent diffusion effect and assist the sound absorption effect; the cross-section of the grille bars 400 is trapezoidal, so the possibility of deformation of the grille bars 400 themselves is reduced, and the stability of the fixing of the grille bars 400 is improved; after the sound waves are transmitted from the gaps between the grille bars 400, they form a resistive sound-absorbing effect after reaching the position of the bottom slits 421, which is beneficial to the absorption of low-frequency noise.

[0044] In one embodiment, the sound absorbing member 300 includes a plurality of sub-sound absorbing layers stacked in a thickness direction, wherein a difference is formed in surface density between the plurality of sub-sound absorbing layers.

[0045] In this embodiment, there are two sub-sound absorbing layers with the same thickness, but the surface density of the two layers is 30% to 50% different. The setting of the sub-sound absorbing layer increases the effect of interface dissipation, and the setting of different surface densities can produce targeted absorption effects for noises of different frequencies.

[0046] Reference Figures 1 to 4 In one embodiment, the grille sound absorbing assembly further includes a first sound-transmitting cloth layer 500 , and the first sound-transmitting cloth layer 500 is laid on a plane formed by a plurality of the keels 200 .

[0047] In this embodiment, the addition of the first sound-transmitting cloth layer 500 makes the multiple keels 200 invisible from the outside, and at the same time, due to the porous characteristics of the first sound-transmitting cloth layer 500, the sound waves can pass through the first sound-transmitting cloth layer 500 and reach the inside of the installation frame 100. The first sound-transmitting cloth layer 500 can be various types of glass fiber cloth, etc., and the wire diameter and wire spacing of the wires constituting the first sound-transmitting cloth layer 500 can be adjusted according to the actual application scenario. It should be noted that by adjusting the parameters of the first sound-transmitting cloth layer 500, the acoustic characteristics of the first sound-transmitting cloth layer 500 can also be modified to a certain extent. At the same time, the first sound-transmitting cloth layer 500 can play a certain buffering effect. And reduce the vibration noise of the grille bar 400.

[0048] In one embodiment, the first sound-transmitting fabric layer 500 is made of non-combustible fiber.

[0049] In this embodiment, the first sound-permeable fabric layer 500 can be made of inorganic fiber or metal mesh, etc., and the non-combustible property is introduced to improve the fireproof performance of the first sound-permeable fabric layer 500. Other components can also be selected as fireproof materials, so that the overall fireproof effect of the grille sound-absorbing assembly is guaranteed.

[0050] Reference Figures 1 to 4 In one embodiment, the inner wall in the width direction and / or the inner wall in the length direction of the installation frame 100 is provided with a first mounting platform 120 and a second mounting platform 130 spaced apart in the height direction, the sound absorbing member 300 is clamped between the first mounting platform 120 and the second mounting platform 130, and a plurality of the keels 200 are installed on the first mounting platform 120.

[0051] In this embodiment, a first mounting platform 120 and a second mounting platform 130 are provided on the inner wall of the mounting frame 100, thereby providing a foundation for the installation of the sound absorbing member 300 and the keel 200. It should be noted that the first mounting platform 120 and the second mounting platform can be provided on the inner wall of the mounting frame 100 in the length direction or in the width direction alone, so as to achieve the function of a fixed foundation; when the first mounting platform 120 and the second mounting platform are provided on the inner wall of the mounting frame 100 in both directions, a better fixed foundation can be provided.

[0052] Reference Figures 1 to 4 In one embodiment, a third mounting platform 140 is provided on the top of the outer wall of the mounting frame 100 in the width direction and / or the length direction.

[0053] In this embodiment, considering that the first sound-transmitting fabric layer 500 is made of a flexible material and it is inconvenient to fix it on the mounting frame 100, a circular third mounting platform 140 is provided on the top of the outer peripheral wall of the mounting frame 100, which serves as the mounting base of the first sound-transmitting fabric layer 500. The first sound-transmitting fabric layer 500 can be fixed to the third mounting platform 140 by bonding or mechanical means. The width and thickness of the third mounting platform 140 are adaptively adjusted according to actual needs; it should be noted that the third mounting platform 140 is circular in shape as a whole, but is not limited to being completely continuous in a certain circumferential direction.

[0054] In one embodiment, the grille bars 400 at one end of the installation frame 100 in the width direction are aligned with the installation frame 100 , and the width of the third installation platform 140 is half of the distance between adjacent grille bars 400 .

[0055] In this embodiment, the width of the third mounting platform 140 is limited in consideration of the appearance and acoustic effect when multiple grille sound absorbing assemblies are combined in the width direction. Assuming that the distance between adjacent grille bars 400 on the grille sound absorbing assembly is A, when two grille sound absorbing assemblies are combined in the width direction and the adjacent third mounting platforms 140 are abutted, the distance between adjacent grille bars 400 on the two grille sound absorbing assemblies is also A.

[0056] In one embodiment, the keel 200 is an inorganic plate.

[0057] In this embodiment, the keel 200 is selected to be an inorganic board so as to have fireproof performance. The specific material of the keel 200 can be glass magnesium board, cement board or gypsum board.

[0058] Reference Figures 5 to 7 In one embodiment, the grille sound absorbing assembly further includes a second sound-permeable cloth 600 that seals the back side of the installation frame 100 , and the second sound-permeable cloth 600 is made of non-combustible fiber material.

[0059] In this embodiment, the sound absorbing member 300 is enclosed in the installation frame 100 by the second sound-permeable cloth 600, which reduces the sound waves penetrating from the back of the installation frame 100 to a certain extent, but does not block the transmission of the sound waves; after the sound waves propagate to the second sound-permeable cloth 600, part of them are reflected back to the sound absorbing member 300, thereby increasing the sound absorption of the sound absorbing member 300. The material of the second sound-permeable cloth 600 can be inorganic material fiber composition or metal wire mesh cloth, etc., and the fire resistance of the second sound-permeable cloth 600 is improved by introducing the non-combustible property.

[0060] Reference Figures 5 to 7 In one embodiment, the cross section of the grille bar 400 is connected with a reinforcing bone 430 in the thickness direction.

[0061] In this embodiment, the number of reinforcing bones 430 is not limited to one, and can be appropriately increased according to the size of the grille bar 400. The length, width and thickness directions of the grille bar 400 are consistent with the length, width and thickness directions of the installation frame 100. The molding process of the reinforcing bones 430 can be synchronized with the molding of the grille bar 400. For example, if the grille bar 400 is molded as the basis, the processing of the reinforcing bones 430 can be conveniently realized through the design of the mold shape.

[0062] In summary, in the grille sound-absorbing assembly provided by the utility model, a plurality of grille bars 400 are nailed and fixed on a plurality of keels 200 and are arranged at intervals in the width direction of the mounting frame 100, so that the fixing effect of the grille bars 400 is excellent and the possibility of vibration is reduced, and the cross-section of the grille bars 400 is trapezoidal as a whole, and the trapezoidal surface of the grille bars 400 can form an excellent diffusion effect, thereby assisting the sound absorption effect; the cross-section of the grille bars 400 is trapezoidal, so the possibility of deformation of the grille bars 400 themselves is reduced, and the stability of the fixing of the grille bars 400 is improved; after the sound waves are transmitted from the gaps between the grille bars 400, they form a resistive sound-absorbing effect after reaching the position of the bottom slits 421, which is beneficial to the absorption effect of low-frequency noise.

[0063] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A grille sound absorbing assembly, characterized in that: include: The installation frame (100) is frame-shaped and has a front opening (110) formed in the thickness direction; A plurality of keels (200) are arranged and fixed at intervals in the width direction of the installation opening (110); A sound absorbing member (300) is arranged in the installation frame (100); A plurality of grille bars (400) are nailed and fixed on a plurality of the keels (200) and arranged at intervals in the width direction of the installation frame (100); the cross section of the grille bar (400) is arranged in a trapezoidal shape as a whole; the side of the grille bar (400) facing away from the keel (200) is the top side (410); the side of the grille bar (400) combined with the keel (200) is the bottom side (420); the top angle of the cross section of the grille bar (400) is 90.5 to 95 degrees; both ends of the grille bar (400) in the width direction are retracted at the position of the bottom side (420) to form a bottom slit (421); the thickness of the bottom slit (421) is 0.5 to 2 mm; and the width of the bottom slit (421) is 10% to 35% of the width of the grille bar (400); Wherein, the perforation rate of the front side of the grille sound absorbing component is between 15% and 35%.

2. The grille sound absorbing assembly according to claim 1, characterized in that: The sound absorbing member (300) comprises a plurality of sub-sound absorbing layers stacked in a thickness direction, wherein a difference is formed in surface density between the plurality of sub-sound absorbing layers.

3. The grille sound absorbing assembly according to claim 1, characterized in that: The grille sound absorption assembly further comprises a first sound-transmitting cloth layer (500), wherein the first sound-transmitting cloth layer (500) is laid on a plane formed by the plurality of keels (200).

4. The grille sound absorbing assembly according to claim 3, characterized in that: The material of the first sound-permeable cloth layer (500) is non-combustible fiber.

5. The grille sound absorbing assembly according to claim 1, characterized in that: A first mounting platform (120) and a second mounting platform (130) are arranged at intervals in the height direction on the inner wall in the width direction and / or the inner wall in the length direction of the mounting frame (100); the sound absorbing member (300) is clamped between the first mounting platform (120) and the second mounting platform (130); and a plurality of keels (200) are mounted on the first mounting platform (120).

6. The grille sound absorbing assembly according to claim 5, characterized in that: A third mounting platform (140) is provided at the top of the outer wall of the mounting frame (100) in the width direction and / or the length direction.

7. The grille sound absorbing assembly according to claim 6, characterized in that: The grille bars (400) at one end of the installation frame (100) in the width direction are aligned with the installation frame (100), and the width of the third installation platform (140) is half the distance between adjacent grille bars (400).

8. The grille sound absorbing assembly according to any one of claims 1 to 7, characterized in that: The keel (200) is an inorganic plate.

9. The grille sound absorbing assembly according to any one of claims 1 to 7, characterized in that: The grille sound absorption assembly also includes a second sound-permeable cloth (600) that seals the back side of the installation frame (100), and the second sound-permeable cloth (600) is made of non-combustible fiber material.

10. The grille sound absorbing assembly according to any one of claims 1 to 7, characterized in that: The cross section of the grille bar (400) is connected with a reinforcing bone (430) in the thickness direction.

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