Slit composite sound absorption structure

Abstract

The present invention relates to a slit composite sound absorbing structure, wherein the outer frame comprises two first direction frame members arranged in parallel and two second direction frame members arranged in parallel; the outer frame is an integrally formed structure or is formed by fixing the first direction frame member and the second direction frame member to each other; a slit sound absorbing board is connected to the outer frame, and the slit sound absorbing board comprises a plurality of slats; the slats at both ends of the slit sound absorbing board in the first direction exceed or are flush with the second direction frame member in the first direction; the slit composite sound absorbing structure of the present invention, as an integral unit, can be transported in blocks or installed and fixed as a whole unit, without the need for multiple types of components to be installed in sequence in different processes; when a plurality of the slit composite sound absorbing structures are spliced, the appearance of the splicing seams is optimized, forming an integral structure without obvious splicing seams.

Description

Technical Field

[0001] The invention belongs to the field of slotted sound absorbing structures, and in particular relates to a slotted composite sound absorbing structure. Background Art

[0002] In the prior art, the fixed structure of the slatted sound-absorbing panel mainly includes a slat array, a slat keel and a main structure keel. The structural hierarchy is: the main structure keel is fixed to the wall, the slat keel is connected to the main structure keel, the slat array is installed on the slat keel, and a sound-absorbing layer is generally provided on the back of the slat array. It can also be concluded from the description of the above structural hierarchy that the installation process of the fixed structure of the slatted sound-absorbing panel has many operation steps and the overall installation speed is slow. In particular, the installation of the slat array and the laying of the sound-absorbing layer are relatively time-consuming.

[0003] The slit sound-absorbing panel is directly fixed and wrapped by a frame or box structure, and the sound-absorbing layer is pre-filled, so that a primary slit sound-absorbing panel module installation body can be formed. However, in the actual construction, after multiple primary slit sound-absorbing panel module installation bodies are spliced, the joints between them seriously affect the uniformity and appearance of the final overall structure. In particular, when the size of the primary slit sound-absorbing panel module installation body is small, the number of splicing seams in the entire construction project increases, which seriously affects the construction effect. That is, the exposure of the frame or box structure seriously affects the construction quality. In some construction sites, the horizontal extension size is very large (such as aisles, corridors, etc.); the construction effect of the slit sound-absorbing panel module installation body extending in the horizontal direction is very important.

[0004] The slit acoustic panel is fixed in a frame or box, and if the distance between the slit acoustic panel and the outer frame edge is equal to the slit width of the slit acoustic panel, and the width of the outer frame edge is made equal to the slat width of the slit acoustic panel, the same visual effect of the slat and outer frame edge can be achieved. The above solution has the following two disadvantages: first, the complexity of the edge manufacturing is increased; second, due to the differences in manufacturing process, materials and shapes, it is difficult to make the edge have the same appearance as the slat. Summary of the invention

[0005] The purpose of the present invention is to overcome the technical problems existing in the above-mentioned background technology and provide a slit composite sound absorbing structure.

[0006] In order to achieve the above technical purpose, the present invention adopts the following technical solution:

[0007] A slit composite sound-absorbing structure comprises an outer frame and a slit sound-absorbing board.

[0008] The outer frame includes two parallel first direction frame members and two parallel second direction frame members; the parallel first direction frame members and the parallel second direction frame members are not limited to linear extensions; the outer frame is an integrally formed structure or is formed by the first direction frame members and the second direction frame members being fixed to each other.

[0009] The slit sound-absorbing board is connected to the outer frame, and the slit sound-absorbing board includes a plurality of slats; the slats at both ends of the slit sound-absorbing board in the first direction exceed or are flush with the frame in the second direction, so that the frame in the second direction is covered by the slats. When a plurality of the slit composite sound-absorbing structures are spliced ​​in the first direction, the appearance of the splicing seams in the first direction can be consistent with the slits of the slit sound-absorbing board, forming an overall structure without obvious splicing seams. When the slats at both ends of the slit sound-absorbing board in the first direction exceed the frame in the second direction more in the first direction, the user is less likely to notice the frame in the second direction.

[0010] As a solution of the present invention, optionally, the cross section of the second direction frame is L-shaped or inverted F-shaped. The L-shaped second direction frame is easy to shape and has a high structural strength. The L-shaped second direction frame is easy to be covered by the slats without affecting the appearance of the first direction joint.

[0011] As an improvement of the solution of the present invention, preferably, the inverted F-shaped second direction frame has an additional middle horizontal plate compared to the L-shaped second direction frame, thereby strengthening the structural strength of the second direction frame. At the same time, the middle horizontal plate can be used as a fixing base for the slit sound-absorbing panel.

[0012] As a solution of the present invention, optionally, the cross-section of the first direction frame is in a Π shape, and two first direction frames clamp the slit sound-absorbing board in the second direction. If the cut end surface of the slat is not smooth, when it is in an exposed state, it seriously affects the installation quality of the slat composite sound-absorbing structure. The Π-shaped first direction frame forms a edging effect on the slat in the second direction. During the installation of the slat composite sound-absorbing structure, the Π-shaped first direction frame is installed after the slit sound-absorbing board. For example, the slit sound-absorbing board is first connected to the second direction frame, and then the first direction frame is fixed. The first direction frame and the second direction frame are fixed by common methods such as screw connection or angle aluminum connection.

[0013] As a solution of the present invention, optionally, the contact portion of the first direction frame and the slotted sound absorbing board matches in shape, and the shape matching arrangement makes the match between the first direction frame and the slotted sound absorbing board compact and beautiful.

[0014] As an improvement of the solution of the present invention, preferably, the cross section of the first direction frame is L-shaped or inverted F-shaped, which facilitates the connection of the slit sound-absorbing panel to the outer frame.

[0015] The L-shaped first direction frame has the following two advantages:

[0016] a. Different from the Π-shaped first direction frame, the L-shaped first direction frame has a strong selectivity in the installation order, such as first fixing the first direction frame and the second direction frame to each other to form an outer frame, and then fixing the connecting slit sound-absorbing panel in the outer frame;

[0017] b. Most of the L-shaped first direction frame can be covered by the slats, which is helpful to reduce the second direction splicing seam of the slit composite sound absorbing structure spliced ​​in the second direction.

[0018] As an improvement of the solution of the present invention, preferably, the inverted F-shaped first direction frame has an additional middle horizontal plate compared to the L-shaped first direction frame, which strengthens the structural strength of the first direction frame and can serve as a fixing base for the slit sound-absorbing panel.

[0019] In a specific implementation, optionally, the slatted sound-absorbing board further comprises a slatted keel, wherein the slat comprises a board body and a fixing leg disposed on the board body, and the slat is fixed to the slatted keel through the fixing leg. The keel-fixed slatted sound-absorbing board is common in the prior art and has the advantage of high cost performance. In this solution, the specific number of fixing legs in the fixing leg does not affect the overall technical effect.

[0020] As an improvement of the solution of the present invention, preferably, the first direction frame is provided with a plurality of bayonet holes matching the fixing legs of the slats on the slit sound-absorbing board. The existence of the bayonet holes, on the one hand, hides the first direction frame under the slats, so that the second direction joint seam is minimized; on the other hand, it can assist in fixing the slats and reduce the number of slat keels.

[0021] In a specific implementation, the slat is optionally a slat with a single fixed leg or a slat with a double fixed leg. The slat with a single fixed leg or a slat with a double fixed leg is the most common shape at present. When the slat is a slat with a single fixed leg, since there is only one fixed leg on the slat, the hidden space of the second direction frame under the slat is larger.

[0022] In a specific implementation, optionally, the surface of the plate 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-sectional shape of the plate is a rectangle, a trapezoid, a Π shape, an arch, a C shape, a D shape, a B shape, a circle, a triangle or an ellipse.

[0023] In a specific implementation, optionally, the slit composite sound absorbing structure further includes a back sealing portion, the back sealing portion is fixed to the opposite side of the slit sound absorbing board on the outer frame, and a sound absorbing member is provided between the back sealing portion and the slit sound absorbing board. Sound absorbing members are provided inside the slit composite sound absorbing structure to meet specific sound absorption design requirements. The slit composite sound absorbing structure is an integral installation unit, which can be transported as a unit and fixed as a unit without the need for multiple sequential installation steps.

[0024] In a specific implementation, optionally, the back sealing portion is a metal plate layer or a fiber cloth layer, and the sound absorbing component is sound absorbing cotton.

[0025] The slit composite sound absorbing structure provided by the present invention can be transported as an integral unit and installed and fixed as a unit as a whole, without the need to install multiple types of components in sequence in different processes; when a plurality of the slit composite sound absorbing structures are spliced, the appearance of the splicing seams is optimized to form an integral structure without obvious splicing seams. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of a frame member in the first direction in Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of a frame member in the second direction in Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of the frame of Embodiment 1 of the present invention;

[0029] Figure 4 This is a schematic diagram of the installation of the slats in Example 1 of the present invention;

[0030] Figure 5 It is a three-dimensional schematic diagram of the double-leg slit sound-absorbing panel in Example 3 of the present invention;

[0031] Figure 6 This is a schematic diagram of the connection between the frame and the slit sound-absorbing panel in Example 3 of the present invention;

[0032] Figure 7 This is a schematic diagram of the position of the back sealing portion of the back of the three-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0033] Figure 8 This is a three-dimensional schematic diagram of a three-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0034] Fig. 9 This is a schematic cross-sectional view of a three-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0035] Fig.10 This is a partial enlarged view of the second direction frame member covered by the slats in Example 3 of the present invention;

[0036] Fig.11This is a schematic diagram of the installation of the three-slit composite sound-absorbing structure in the first direction according to an embodiment of the present invention (front view);

[0037] Fig.12 This is a schematic diagram of the first direction expansion installation of the three-slit composite sound-absorbing structure of the embodiment of the present invention (back side) (the back sealing part is hidden);

[0038] Fig.13 This is a schematic cross-sectional view of a four-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0039] Fig.14 It is a schematic diagram of a frame member in the first direction of embodiment 5 of the present invention;

[0040] Fig.15 This is a schematic diagram of the frame of Embodiment 5 of the present invention;

[0041] Fig.16 This is a front schematic diagram of a five-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0042] Fig.17 This is a front view schematic diagram of the first direction expansion installation of the five-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0043] Fig.18 This is a schematic diagram of the back side of the five-slit composite sound-absorbing structure of the embodiment of the present invention when it is extended in the first direction (the back sealing part is hidden);

[0044] Fig.19 This is a front view schematic diagram of the second direction expansion installation of the five-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0045] Fig. 20 This is a schematic diagram of the back side of the second direction expansion installation of the 5-slit composite sound-absorbing structure according to the embodiment of the present invention (the back sealing part is hidden);

[0046] Fig.21 This is a schematic diagram of a single-leg slit sound-absorbing panel according to Example 6 of the present invention;

[0047] Fig. 22 This is a three-dimensional schematic diagram of a six-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0048] Fig.23 This is a schematic cross-sectional view of a 6-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0049] Fig.24 This is a schematic diagram of the frame of Embodiment 7 of the present invention;

[0050] Fig.25 This is a three-dimensional schematic diagram of a seven-slit composite sound-absorbing structure according to an embodiment of the present invention;

[0051] Fig.26 This is a schematic diagram of the second direction expansion installation of the 7-slit composite sound-absorbing structure according to Example 1 of the present invention;

[0052] Fig. 27 It is a front schematic diagram of the 8-slit composite sound-absorbing structure according to Example 8 of the present invention.

[0053] Reference numerals: slit composite sound absorbing structure (100), outer frame (1), first direction frame member (11), snap-on (111), second direction frame member (12), slit sound absorbing board (2), slats (21), slat keel (22), back sealing portion (3), second direction joint seam (5). DETAILED DESCRIPTION

[0054] The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. Example 1

[0055] like Figure 1-4 As shown, a slotted composite sound absorbing structure comprises an outer frame 1 and a slotted sound absorbing panel 2.

[0056] The outer frame 1 includes two parallel first direction frame members 11 and two parallel second direction frame members 12; the parallel first direction frame members 11 and the parallel second direction frame members 12 are both straight strip-shaped members; the outer frame 1 is formed by fixing the first direction frame members 11 and the second direction frame members 12 to each other.

[0057] The cross section of the second direction frame 12 is L-shaped. The L-shaped second direction frame 12 is easy to shape and has a high structural strength. The L-shaped second direction frame 12 is conducive to being covered by the slats 21 without affecting the appearance of the first direction joint.

[0058] The cross section of the first direction frame 11 is in a Π shape, and the two first direction frames 11 clamp the slatted sound absorbing board 2 in the second direction. If the cut end surface of the slat 21 is not smooth, when it is in a bare state, it will seriously affect the installation quality of the slatted composite sound absorbing structure. The Π-shaped first direction frame 11 forms an edge binding effect on the slat 21 in the second direction.

[0059] The slotted sound absorbing board 2 is connected to the outer frame 1, and the slotted sound absorbing board 2 includes a plurality of strips 21; Figure 4As shown, the slats 21 are fixed to the first direction frame 11 by common means such as rivets. The Π-shaped first direction frame 11 also facilitates the fixing of the slats 21 to the first direction frame 11. The slats 21 at both ends of the slit sound-absorbing board 2 in the first direction extend beyond the second direction frame 12 in the first direction, so that the second direction frame 12 is covered by the slats 21. When a plurality of the slit composite sound-absorbing structures are spliced ​​in the first direction, the appearance of the first direction splicing seams can be consistent with the slits of the slit sound-absorbing board 2, forming an integral structure without obvious splicing seams. The more the slats 21 at both ends of the slit sound-absorbing board 2 in the first direction extend beyond the second direction frame 12 in the first direction, the less likely the user will notice the second direction frame 12. Example 2

[0060] The difference between Example 2 and Example 1 is that the two second direction frame members 12 are not linear strip members but arc-shaped strip members. Example 3

[0061] like Figure 5-12 As shown, the difference between Example 3 and Example 1 is that the slatted sound-absorbing board 2 further includes a slat keel 22, the slat 21 includes a board body (not marked in the figure) and a fixed leg (not marked in the figure) arranged on the board body, and the slat 21 is fixed to the slat keel 22 through the fixed leg. The surface of the board body is a plane, and the cross-sectional shape of the board body is a Π shape. The slat 21 is a double-fixed leg slat 21, which is the most common shape at present. The slat keel 22 is connected to the outer frame 1. The slat keel 22 is connected to the second direction frame member 12 by common means such as rivets. The keel-fixed slatted sound-absorbing board 2 is common in the prior art and has the advantage of high cost performance. The slatted composite sound-absorbing structure also includes a back sealing part 3 of a fiber cloth layer, the back sealing part 3 is fixed to the opposite side of the slatted sound-absorbing board 2 on the outer frame 1, and a sound-absorbing member (not shown in the figure) of sound-absorbing cotton is provided between the back sealing part 3 and the slatted sound-absorbing board 2. Sound absorbing parts are arranged inside the slit composite sound absorbing structure to meet specific sound absorption design requirements.

[0062] In specific operation, the slat keel 22 and the second direction frame 12 can be fixed first, the slats 21 can be installed on the slat keel 22, and then the first direction frame 11 can be fixed to the second direction frame 12 by common connection methods such as angle aluminum connection.

[0063] In other embodiments, a layer of transition fixing keel may be added between the slat keel 22 and the second direction frame member 12 . Example 4

[0064] like Fig.13 As shown, the difference between Example 4 and Example 3 is that,

[0065] The cross section of the second direction frame 12 is an inverted F-shape. The inverted F-shaped second direction frame 12 has an additional middle cross plate compared to the L-shaped second direction frame 12, thereby strengthening the structural strength of the second direction frame 12. At the same time, the middle cross plate can serve as a fixing base for the slat keel 22.

[0066] When the thickness of the slit composite sound absorbing structure 100 is large, if the cross section of the second direction frame 12 is L-shaped, the height dimension of the slat keel 22 needs to be increased accordingly, which is disadvantageous to the strength and material consumption of the slat keel 22. The inverted F-shaped second direction frame 12 solves the above problem. Example 5

[0067] like Figure 14-20 As shown, the difference between Example 5 and Example 3 is that,

[0068] The cross section of the first direction frame member 11 is L-shaped, which facilitates the connection of the slit sound-absorbing panel 2 to the outer frame 1 .

[0069] The L-shaped first direction frame member 11 has the following two advantages:

[0070] a. Different from the Π-shaped first direction frame member 11, the L-shaped first direction frame member 11 has a strong selectivity in the installation order, such as first fixing the first direction frame member 11 and the second direction frame member 12 to each other to form an outer frame 1, and then fixing the connecting slit sound-absorbing panel 2 in the outer frame 1;

[0071] b. Most of the L-shaped first direction frame 11 can be covered by the slats 21, such as Fig.19 As shown, it is helpful to reduce the second direction splicing seam 5 where the strip composite sound absorbing structure is spliced ​​in the second direction.

[0072] In other embodiments, the cross-section of the first direction frame 11 is an inverted F-shape. The inverted F-shaped first direction frame 11 has an additional middle cross plate compared to the L-shaped first direction frame 11, which strengthens the structural strength of the first direction frame 11 and can serve as a fixing base for the slat keel 22. Example 6

[0073] like Figure 21-23 As shown, the difference between Example 6 and Example 5 is that the slat 21 is a single-fixed-leg slat 21. Since there is only one fixed leg on the slat 21, the second direction frame 12 has a larger hidden space under the slat 21. The more the single-fixed-leg slat 21 exceeds the second direction frame 12 in the first direction, the less likely the user will notice the second direction frame 12. Example 7

[0074] like Figure 24-26 As shown, the difference between Example 7 and Example 5 is that the first direction frame member 11 is provided with a plurality of bayonet holes 111 that match the fixing legs of the slats 21 on the slit sound absorbing board 2. The existence of the bayonet holes 111, on the one hand, hides the first direction frame member 11 under the slats 21, so that the second direction joint seam 5 is minimized; on the other hand, it can assist in fixing the slats 21 and reduce the number of slat keels 22. Example 8

[0075] like Fig. 27 As shown, the difference between Example 8 and Example 3 is that the cross-sectional shape of the plate body of the slat 21 is C-shaped, and the first direction frame 11 matches the contact portion of the slit sound-absorbing panel 2 in shape, and the above-mentioned shape matching setting makes the matching between the first direction frame 11 and the slit sound-absorbing panel 2 compact and beautiful.

[0076] The words "first", "second" and similar words used in the specification and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantitative limitation, but rather indicate the presence of at least one. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0077] The embodiment is only a single implementation method of the present invention. For ordinary technicians in this field, other embodiments can be obtained according to the drawings without creative work, which are also within the protection scope of the present invention.

Claims

1. A composite sound-absorbing structure with slits, characterized in that: Including outer frame and slatted sound absorbing panels; The outer frame includes two first direction frame members arranged in parallel and two second direction frame members arranged in parallel; the outer frame is an integrally formed structure or is formed by fixing the first direction frame members and the second direction frame members to each other; The slit sound absorbing board is connected to the outer frame, and the slit sound absorbing board includes a plurality of slats; the slats at both ends of the slit sound absorbing board in the first direction extend beyond the frame in the second direction; The slotted sound absorbing board further comprises a slat keel, wherein the slat comprises a plate body and a fixing leg disposed on the plate body, and the slat is fixed to the slat keel through the fixing leg; The cross section of the second direction frame member is in an inverted F shape, and the cross section of the first direction frame member is in an L shape or an inverted F shape; The inverted F-shaped second direction frame has an additional middle horizontal plate compared to the L-shaped second direction frame, and the middle horizontal plate of the second direction frame is a fixing base for the slat keel; The first direction frame matches the contact portion of the slotted sound absorbing board in shape, and the first direction frame is provided with a plurality of bayonet holes that match the fixed legs of the slats on the slotted sound absorbing board.

2. The slit composite sound absorbing structure according to claim 1, characterized in that: The slats are single-fixed-leg or double-fixed-leg slats.

3. The slit composite sound absorbing structure according to claim 1, characterized in that: 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-sectional shape of the plate body is a rectangle, a trapezoid, a Π shape, an arch, a C shape, a D shape, a B shape, a circle, a triangle or an ellipse.

4. The slit composite sound absorbing structure according to claim 1, characterized in that: The slotted composite sound absorbing structure further comprises a back sealing portion, which is fixed to the opposite side of the slotted sound absorbing board on the outer frame, and a sound absorbing member is arranged between the back sealing portion and the slotted sound absorbing board.

5. The slit composite sound absorbing structure according to claim 4, characterized in that: The back sealing part is a metal plate layer or a fiber cloth layer, and the sound absorbing component is sound absorbing cotton.

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