CN111798826A - Strip seam composite sound absorption structure - Google Patents
Strip seam composite sound absorption structure Download PDFInfo
- Publication number
- CN111798826A CN111798826A CN202010673760.4A CN202010673760A CN111798826A CN 111798826 A CN111798826 A CN 111798826A CN 202010673760 A CN202010673760 A CN 202010673760A CN 111798826 A CN111798826 A CN 111798826A
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- sound absorbing
- shaped
- slatted
- direction frame
- composite sound
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
Abstract
The invention relates to a strip seam composite sound absorption structure.A frame comprises two first direction frame pieces which are arranged in parallel and two second direction frame pieces which are arranged in parallel; the outer frame is an integrated structure or is formed by mutually fixing a first direction frame piece and a second direction frame piece; the strip seam sound-absorbing board is connected with the outer frame and comprises a plurality of battens; the battens at the two ends of the slit sound-absorbing board in the first direction exceed or are flush with the frame piece in the second direction in the first direction; the strip seam composite sound absorption structure is taken as an integral unit, can be transported in units or integrally installed and fixed according to the unit, and does not need to be installed by various components in sequence according to the process; when a plurality of the strip seam composite sound absorption structures are spliced, the appearance of the spliced seams is optimized, and an integral structure without obvious spliced seams is formed.
Description
Technical Field
The invention belongs to the field of strip seam sound absorption structures, and particularly relates to a strip seam composite sound absorption structure.
Background
In the prior art, a strip seam sound-absorbing plate fixing structure mainly comprises a batten array, batten keels and main structure keels. And the structure hierarchy is as follows: the main structure fossil fragments are fixed in the wall, and the lath fossil fragments are connected on the main structure fossil fragments, and the lath array is installed on the lath fossil fragments, and still is equipped with the sound absorbing layer at the lath array back generally. The structural hierarchy description can also show that the installation process of the strip seam sound-absorbing plate fixing structure has more operation steps and low integral installation speed. Especially the installation of the slat array and the laying of the sound-absorbing layer is time consuming.
The strip seam sound-absorbing plate is directly fixedly wrapped through the frame body or the box body structure, and meanwhile, the sound-absorbing layer is pre-filled, so that a primary strip seam sound-absorbing plate module installation body can be formed. However, when a plurality of the primary slit sound-absorbing plate module installation bodies are spliced in specific construction, the joints among the primary slit sound-absorbing plate module installation bodies seriously affect the uniformity and the attractiveness of the final overall structure. Especially, when the size of the primary strip-seam sound-absorbing board module installation body is small, the number of splicing seams in the whole construction project is increased, and the construction effect is seriously influenced. Namely, the exposure of the frame or box structure seriously affects the construction quality. In some construction sites, the size of the horizontal extension is large (such as an aisle, a corridor and the like); the strip-seam sound-absorbing board module installation body has very important construction effect of extending in the horizontal direction.
The strip seam sound-absorbing boards are fixed in the frame body or the box body, if the strip seam sound-absorbing boards and the outer frame edge covering distance is equal to the strip seam width of the strip seam sound-absorbing boards, and meanwhile, the strip seam outer frame edge covering width is matched to be the same as the strip width of the strip seam sound-absorbing boards, so that the same visual effect of the strip outer frame edge covering is realized. The above solution has two disadvantages: firstly, the manufacturing complexity of the wrapping edge is increased; secondly, due to the difference of manufacturing process, materials and modeling, the edge covering is difficult to manufacture into the appearance effect consistent with that of the batten.
Disclosure of Invention
The present invention is directed to overcome the above problems in the prior art, and to provide a composite sound absorption structure with slits.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
a strip seam composite sound absorption structure comprises an outer frame and a strip seam sound absorption plate.
The outer frame comprises two first direction frame pieces arranged in parallel and two second direction frame pieces arranged in parallel; the first direction frame piece and the second direction frame piece which are arranged in parallel are not limited to be linearly extended; the outer frame is an integrally formed structure or is formed by mutually fixing the first direction frame piece and the second direction frame piece.
The strip seam sound-absorbing plate is connected with the outer frame and comprises a plurality of battens; the battens of the slit sound-absorbing board at two ends in the first direction exceed or are flush with the second direction frame piece in the first direction, so that the second direction frame piece is covered by the battens. When a plurality of the strip seam composite sound absorption structures are spliced in the first direction, the appearance of the splicing seams in the first direction can be consistent with the strip seams of the strip seam sound absorption plates, and an integral structure without obvious splicing seams is formed. When the number of the slats of the slit sound-absorbing panel at both ends in the first direction exceeds the number of the second-direction frame members in the first direction, the second-direction frame members are less noticeable to a user.
As an aspect of the present invention, optionally, the cross section of the second direction frame member is L-shaped or F-shaped. L font second direction frame spare is convenient for the shaping and has higher structural strength, L shape second direction frame spare does benefit to and is hidden by the lath, does not influence the appearance of first direction concatenation seam.
As an improvement of the present invention, preferably, the F-shaped second direction frame member has a larger central transverse plate than the L-shaped second direction frame member, so that the structural strength of the second direction frame member is enhanced, and the central transverse plate can be used as a fixing base for the slit sound-absorbing plate.
As a scheme of the present invention, optionally, a cross section of each of the first direction frame members is n-shaped, and the two first direction frame members clamp the slit sound-absorbing panel in the second direction. If the cutting end face of the batten is not smooth, the mounting engineering quality of the strip seam composite sound absorption structure is seriously influenced when the batten is in an exposed state, and the n-shaped first direction frame piece forms a wrapping effect on the batten in the second direction. In the installation process of the strip seam composite sound absorption structure, the n-shaped first direction frame piece is installed behind the strip seam sound absorption plate. If the strip seam sound-absorbing board is connected with the second direction frame piece, the first direction frame piece is fixed. The first direction frame piece and the second direction frame piece are fixedly connected through common modes such as screw connection or angle aluminum connection.
As an aspect of the present invention, optionally, the shape of the contact portion of the first direction frame member and the slit sound-absorbing panel is matched, and the shape matching arrangement enables the matching between the first direction frame member and the slit sound-absorbing panel to be compact and beautiful.
As an improvement of the aspect of the present invention, preferably, the cross section of the first direction frame member is L-shaped or F-shaped, so that the slit sound-absorbing panel is conveniently connected to the outer frame.
The first direction frame piece of L font has following two advantages:
a. different from the n-shaped first direction frame piece, the L-shaped first direction frame piece is high in mounting sequence selectivity, and after the first direction frame piece and the second direction frame piece are fixed with each other to form an outer frame, a strip seam sound-absorbing board is fixedly connected in the outer frame;
b. most of the L-shaped frame pieces in the first direction can be covered by the battens, so that the second-direction splicing seams of the strip seam composite sound absorption structure spliced in the second direction can be reduced.
As an improvement of the solution of the present invention, preferably, the F-shaped first direction frame member has a larger central horizontal plate than the L-shaped first direction frame member, so that the structural strength of the first direction frame member is enhanced, and the first direction frame member can be used as a fixing base for the slit sound-absorbing plate.
In specific implementation, optionally, the slit acoustic panel further includes a slat keel, the slat includes a panel body and a fixing leg portion disposed on the panel body, and the slat is fixed on the slat keel through the fixing leg portion. The keel fixed type strip seam sound-absorbing board is common in the prior art and has the advantage of high cost performance. In this scheme, the concrete quantity of fixed leg does not influence whole technological effect in the fixed leg portion.
As a modification of the aspect of the present invention, it is preferable that the first directional frame member is provided with a plurality of bayonets which are matched with the fixing leg portions of the slats of the slit sound-absorbing panel. Due to the bayonet, on one hand, the first-direction frame piece is hidden below the batten, so that the splicing seam in the second direction is reduced to the maximum extent; on the other hand, the batten can be fixed in an auxiliary mode, and the number of batten keels is reduced.
In a specific implementation, the slats are optionally single-fixed-leg or double-fixed-leg slats. Single or double fixed leg slats are currently the most common shapes. When the slats are single-leg slats, the hidden space under the slats for the second direction frame member is larger because there is only one leg on the slat.
In specific implementation, optionally, the surface of the plate body is a plane, an arc-shaped arch surface, an arc-shaped concave surface, a corrugated surface, a convex edge surface or a concave edge surface; the cross section of the plate body is rectangular, trapezoidal, n-shaped, arched, C-shaped, D-shaped, B-shaped, circular, triangular or elliptical.
In specific implementation, optionally, the composite sound absorption structure with slits further comprises a back sealing part, the back sealing part is fixed on the outer frame on the opposite side of the sound absorption plate with slits, and a sound absorption piece is arranged between the back sealing part and the sound absorption plate with slits. The sound absorbing piece is arranged in the strip seam composite sound absorbing structure to meet the specific sound absorbing design requirement. The strip-seam composite sound absorption structure can be transported according to units and integrally fixed according to the units as an integral installation unit without being installed in a plurality of working procedure sequences.
In a specific implementation, optionally, the back sealing part is a metal plate layer or a fiber cloth layer, and the sound absorbing element is sound absorbing cotton.
The strip seam composite sound absorption structure provided by the invention is taken as an integral unit, can be transported in units and integrally installed and fixed in units, and does not need to be installed in sequence of various parts in different processes; when a plurality of the strip seam composite sound absorption structures are spliced, the appearance of the spliced seams is optimized, and an integral structure without obvious spliced seams is formed.
Drawings
FIG. 1 is a schematic view of a first direction frame member in embodiment 1 of the present invention;
FIG. 2 is a schematic view of a second direction frame member in embodiment 1 of the present invention;
fig. 3 is a schematic view of a frame body according to embodiment 1 of the present invention;
FIG. 4 is a schematic view of the installation of a slat according to embodiment 1 of the present invention;
fig. 5 is a schematic perspective view of a two-leg slit sound-absorbing panel in embodiment 3 of the present invention;
FIG. 6 is a schematic view showing the connection between the frame body and the slit sound-absorbing panel in embodiment 3 of the present invention;
FIG. 7 is a schematic view of the position of the back sealing portion of the composite sound absorbing structure with slits in example 3 of the present invention;
FIG. 8 is a perspective view of a composite sound absorbing structure with slits according to example 3 of the present invention;
FIG. 9 is a schematic cross-sectional view of a composite sound absorbing structure with slits according to example 3 of the present invention;
FIG. 10 is an enlarged view of a portion of a slat covering second directional frame member according to example 3 of the present invention;
FIG. 11 is a schematic view (front view) of a first direction expansion installation of a composite sound absorbing structure with slits according to example 3 of the present invention;
FIG. 12 is a schematic view of the installation of the composite sound absorbing structure of example 3 (back side) with the seam extended in the first direction (back sealing part is hidden);
FIG. 13 is a schematic cross-sectional view of a composite sound absorbing structure having slits according to example 4 of the present invention;
FIG. 14 is a schematic view of a first direction frame member according to embodiment 5 of the present invention;
fig. 15 is a schematic view of a frame body according to embodiment 5 of the present invention;
FIG. 16 is a schematic front view of a composite sound absorbing structure having slits according to example 5 of the present invention;
FIG. 17 is a schematic front view of a composite sound absorbing structure according to example 5 of the present invention installed in a first expanded direction;
FIG. 18 is a schematic view of the back of the composite sound absorbing structure of example 5 according to the present invention, which is installed in a first direction by expanding (the back sealing part is hidden);
FIG. 19 is a schematic front view of a second direction expanded installation of a composite sound absorbing structure according to example 5 of the present invention;
FIG. 20 is a schematic view of a second direction expanded back side of the composite sound absorbing structure with slits according to example 5 of the present invention (the back sealing portion is hidden);
FIG. 21 is a schematic view of a single leg slit sound-absorbing panel according to example 6 of the present invention;
FIG. 22 is a perspective view of a composite sound absorbing structure with slits according to example 6 of the present invention;
FIG. 23 is a schematic cross-sectional view of a composite sound absorbing structure having slits according to example 6 of the present invention;
FIG. 24 is a schematic view of a frame body according to embodiment 7 of the present invention;
FIG. 25 is a perspective view of a composite sound absorbing structure having slits according to example 7 of the present invention;
FIG. 26 is a schematic view of a second direction expansion installation of the composite sound absorbing structure of example 7 according to the present invention;
FIG. 27 is a schematic front view of a composite sound absorbing structure having slits according to example 8 of the present invention;
reference numerals: the sound absorption structure comprises a strip seam composite sound absorption structure (100), an outer frame (1), a first direction frame piece (11), a bayonet (111), a second direction frame piece (12), a strip seam sound absorption plate (2), a batten (21), a batten keel (22), a back sealing part (3), a first direction splicing seam (4) and a second direction splicing seam (5).
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
Example 1
As shown in fig. 1 to 4, the composite sound absorption structure with slits comprises an outer frame 1 and a sound absorption plate 2 with slits.
The outer frame 1 comprises two first direction frame pieces 11 arranged in parallel and two second direction frame pieces 12 arranged in parallel; the first direction frame piece 11 and the second direction frame piece 12 which are arranged in parallel are linear strip-shaped pieces; the outer frame 1 is formed by fixing the first direction frame member 11 and the second direction frame member 12 to each other.
The cross section of the second direction frame piece 12 is L-shaped, the L-shaped second direction frame piece 12 is convenient to form and has higher structural strength, and the L-shaped second direction frame piece 12 is beneficial to being covered by the lath 21 without influencing the appearance of the first direction splicing seam 4.
The cross section of the first direction frame pieces 11 is n-shaped, and the two first direction frame pieces 11 clamp the strip seam sound-absorbing plate 2 in the second direction. If the cut end face of the lath 21 is not smooth, the mounting engineering quality of the strip seam composite sound absorption structure is seriously affected when the lath 21 is in an exposed state, and the n-shaped first direction frame piece 11 forms a wrapping effect on the lath 21 in the second direction.
The slit sound-absorbing plate 2 is connected with the outer frame 1, and the slit sound-absorbing plate 2 comprises a plurality of battens 21; as shown in fig. 4, the slat 21 is fixed to the first direction frame member 11 by a conventional means such as a blind rivet. The n-shaped first direction frame member 11 also facilitates the fixing of the slats 21 on the first direction frame member 11. The slats 21 of the slit sound-absorbing panel 2 at both ends in the first direction project beyond the second-direction frame members 12 in the first direction, so that the second-direction frame members 12 are covered by the slats 21. When a plurality of the strip seam composite sound absorption structures are spliced in the first direction, the appearance of the splicing seams 4 in the first direction can be consistent with the strip seams of the strip seam sound absorption plates 2, and an integral structure without obvious splicing seams is formed. When the slats 21 of the slit sound-absorbing panel 2 at both ends in the first direction are more protruded beyond the second direction frame members 12 in the first direction, the less noticeable the second direction frame members 12 are to the user.
Example 2:
Example 3:
as shown in fig. 5 to 12, the difference between the embodiment 3 and the embodiment 1 is that the slit sound-absorbing panel 2 further includes a slat keel 22, and the slat 21 includes a panel body (not shown) and a fixing leg portion (not shown) provided on the panel body, and the slat 21 is fixed to the slat keel 22 by the fixing leg portion. The surface of the plate body is a plane, and the cross section of the plate body is n-shaped. The slats 21 are double-fixed-leg slats 21, the double-fixed-leg slats 21 being the most common shape at present. The slat keel 22 is connected to the outer frame 1. The slat runners 22 are attached to the second direction frame member 12 by conventional means such as by blind rivets or the like. The keel fixed type strip seam sound-absorbing board 2 is common in the prior art and has the advantage of high cost performance. The composite sound absorption structure with the strip seams further comprises a back sealing part 3 of a fiber cloth layer, the back sealing part 3 is fixed on the outer frame 1, the strip seam sound absorption plates 2 are arranged on the opposite sides of the outer frame, and sound absorption pieces (not shown) for absorbing sound cotton are arranged between the back sealing part 3 and the strip seam sound absorption plates 2. The sound absorbing piece is arranged in the strip seam composite sound absorbing structure to meet the specific sound absorbing design requirement.
In the specific operation, the slat runners 22 may be first fixed to the second direction frame 12, the slats 21 may be installed on the slat runners 22, and then the first direction frame 11 may be fixed to the second direction frame 12 by a common connection method such as an angle aluminum connection.
In other embodiments, a layer of transition fixing keels may be added between the slat keel 22 and the second direction frame member 12.
Example 4:
as shown in fig. 13, embodiment 4 is different from embodiment 3 in that,
the cross section of the second direction frame piece 12 is F-shaped, the F-shaped second direction frame piece 12 has more middle transverse plates than the L-shaped second direction frame piece 12, the structural strength of the second direction frame piece 12 is enhanced, and meanwhile, the middle transverse plates can be used as a fixing foundation of the batten keels 22.
When the slit composite sound absorbing structure 100 has a large thickness and the second directional frame members 12 have an L-shaped cross section, the height dimension of the furring channels 22 needs to be increased, which is disadvantageous in terms of the strength and material consumption of the furring channels 22. And the F-shaped second direction frame member 12 solves the above-mentioned problems.
Example 5:
as shown in fig. 14 to 20, example 5 is different from example 3 in that,
the cross section of the first direction frame piece 11 is L-shaped, so that the strip seam sound-absorbing board 2 can be conveniently connected to the outer frame 1.
The first direction frame member 11, which is L-shaped, has the following two advantages:
a. different from the n-shaped first direction frame piece 11, the L-shaped first direction frame piece 11 has strong installation sequence selectivity, for example, after the first direction frame piece 11 and the second direction frame piece 12 are mutually fixed to form an outer frame 1, a strip seam sound-absorbing plate 2 is fixedly connected in the outer frame 1;
b. the majority of the L-shaped first direction frame member 11 can be covered by the slats 21, as shown in fig. 19, which facilitates reducing the second direction splice 5 where the composite sound absorbing structure is spliced in the second direction.
In other embodiments, the cross section of the first direction frame 11 is F-shaped, and the F-shaped first direction frame 11 has more central horizontal plates than the L-shaped first direction frame 11, so that the structural strength of the first direction frame 11 is enhanced, and the first direction frame 11 can be used as a fixing base for the slat keel 22.
Example 6:
as shown in fig. 21 to 23, the embodiment 6 is different from the embodiment 5 in that the slat 21 is a single fixed leg slat 21, and the hidden space of the second direction frame member 12 under the slat 21 is larger because there is only one fixed leg on the slat 21. The more the single fixed leg strap 21 extends beyond the second direction frame member 12 in the first direction, the less noticeable the second direction frame member 12 is to the user.
Example 7:
as shown in fig. 24 to 26, embodiment 7 differs from embodiment 5 in that a plurality of notches 111 are provided in the first direction frame member 11 to match with the fixing leg portions of the slats 21 of the slit sound-absorbing panel 2. The bayonet 111 is arranged to hide the first direction frame member 11 below the batten 21, so that the second direction splicing seam 5 is reduced to the maximum extent; on the other hand, the fixing of the laths 21 can be assisted, and the number of lath keels 22 is reduced.
Example 8:
as shown in fig. 27, embodiment 8 differs from embodiment 3 in that the plate body cross-sectional shape of the slat 21 is C-shaped, and the first direction frame member 11 is matched in shape to the contact portion of the slit sound-absorbing panel 2, and the shape matching is provided so that the matching between the first direction frame member 11 and the slit sound-absorbing panel 2 is compact and aesthetically pleasing.
The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The embodiment is only a single implementation manner of the present invention, and those skilled in the art can obtain other embodiments according to the drawings without any creative effort, and the embodiments are also within the protection scope of the present invention.
Claims (11)
1. A composite sound absorption structure with a seam is characterized in that: comprises an outer frame and a strip seam sound-absorbing board;
the outer frame comprises two first direction frame pieces arranged in parallel and two second direction frame pieces arranged in parallel; the outer frame is an integrally formed structure or is formed by mutually fixing the first direction frame piece and the second direction frame piece;
the strip seam sound-absorbing plate is connected with the outer frame and comprises a plurality of battens; the laths at the two ends of the slit sound-absorbing plate in the first direction exceed or are flush with the second direction frame piece in the first direction.
2. The slatted composite sound absorbing structure of claim 1, wherein the second directional frame member is L-shaped or F-shaped in cross-section.
3. The slatted composite sound absorbing structure of claim 2, wherein the first direction frame members are n-shaped in cross-section, and wherein the two first direction frame members hold the slatted sound absorbing panel in the second direction.
4. The slatted composite sound absorbing structure of claim 3, wherein the first direction frame pieces are shape-matched to contact portions of the slatted sound absorbing panels.
5. The slatted composite sound absorbing structure of claim 2, wherein the first directional frame members are L-shaped or F-shaped in cross-section.
6. The slatted composite sound absorbing structure of any of claims 1-5, wherein the slatted sound absorbing panel further comprises a slat runner, the slat comprising a panel body and a securing leg disposed on the panel body, the slat being secured to the slat runner by the securing leg.
7. The slatted composite sound absorbing structure of claim 6 wherein the first directional frame members are provided with a plurality of bayonet openings that mate with the mounting legs of the slats of the slatted sound absorbing panel.
8. The slatted composite sound absorbing structure of claim 6, wherein the slats are single or double fixed leg slats.
9. The composite sound absorbing structure of claim 6, wherein the panel surface is a flat surface, an arcuate surface, an arcuate concave surface, a corrugated surface, a convex prism surface, or a concave prism surface; the cross section of the plate body is rectangular, trapezoidal, n-shaped, arched, C-shaped, D-shaped, B-shaped, circular, triangular or elliptical.
10. The composite sound absorbing structure according to claim 1, 2, 3, 4, 5, 7 or 8, further comprising a back sealing part fixed to the outer frame on the opposite side of the slit sound absorbing plate, wherein a sound absorbing member is disposed between the back sealing part and the slit sound absorbing plate.
11. The slatted composite sound absorbing structure of claim 10, wherein the back seal is a metal sheet layer or a fiber cloth layer and the sound absorbing elements are sound absorbing cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010673760.4A CN111798826A (en) | 2020-07-14 | 2020-07-14 | Strip seam composite sound absorption structure |
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| CN202010673760.4A CN111798826A (en) | 2020-07-14 | 2020-07-14 | Strip seam composite sound absorption structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820264A (en) * | 2021-01-07 | 2021-05-18 | 深圳市航天新材科技有限公司 | Assembled type acoustic ultrastructure and sound baffle |
| CN113775067A (en) * | 2021-10-25 | 2021-12-10 | 广州新静界声学科技股份有限公司 | Composite sound absorption assembly with enhanced low frequency absorption |
-
2020
- 2020-07-14 CN CN202010673760.4A patent/CN111798826A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112820264A (en) * | 2021-01-07 | 2021-05-18 | 深圳市航天新材科技有限公司 | Assembled type acoustic ultrastructure and sound baffle |
| CN112820264B (en) * | 2021-01-07 | 2023-10-20 | 深圳市航天新材科技有限公司 | Assembled acoustic super-structure and sound baffle |
| CN113775067A (en) * | 2021-10-25 | 2021-12-10 | 广州新静界声学科技股份有限公司 | Composite sound absorption assembly with enhanced low frequency absorption |
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