Acoustic board

Abstract

The invention discloses an acoustic board, and relates to the technical field of noise reduction, at least one of the two surfaces of the acoustic board in the thickness direction Z is provided with a plurality of long grooves arranged at intervals in the first direction X. The long grooves extend in the second direction Y and extend to penetrate through the outer side face of the acoustic board. The first direction X, the second direction Y and the thickness direction Z are perpendicular to one another, and the long grooves are suitable for folding the acoustic board. When the size of the acoustic board is too large and needs to be reduced, the acoustic board can be folded through the long groove, so that the size of the acoustic board in the first direction X is adjusted, the size of the acoustic board can be adjusted without cutting the acoustic board, the operation is more convenient, the size of the acoustic board is adjusted by bending the acoustic board through the long groove, better size precision is obtained, and the production efficiency is improved. And size and shape errors caused by manual cutting are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of noise reduction, and in particular to a sound absorbing board. Background Art

[0002] Sound-absorbing panels are a type of panel made of porous materials that can absorb sound and provide decoration. For example, they can be laid on the wall to absorb the energy of indoor sound waves and reduce noise. At the same time, the sound-absorbing panels themselves can beautify the wall and create a more beautiful indoor environment.

[0003] The applicant has found that the actual installation of the sound-absorbing board faces a problem. The wall sizes of each household are different, but the size of the sound-absorbing board is of uniform specifications. Therefore, during the installation on the wall, the remaining area of ​​the wall is often smaller than that of a single board. For example, the width / height of the wall is smaller than the width / height of the sound-absorbing board. In this case, it is necessary to measure the size on site, cut the PET board, and then install it on the wall.

[0004] There are obvious problems with this approach: first, on-site measurement and cutting are troublesome, which increases the workload and prolongs the construction time; second, manual cutting has large errors, and after installation, it may not be able to cover the entire wall well, leaving large gaps, affecting the sound absorption effect and aesthetics.

[0005] The above contents are only used to help understand the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0006] The object of the present invention is to provide a sound absorbing panel, the size of which can be conveniently adjusted.

[0007] To achieve the above-mentioned object of the invention, the present invention provides a sound absorbing board, wherein one or two of the two surfaces in the thickness direction Z of the sound absorbing board are provided with a plurality of long grooves arranged at intervals along a first direction X, the long grooves extend along a second direction Y and extend to the outer side surface that passes through the sound absorbing board, the first direction X, the second direction Y and the thickness direction Z are perpendicular to each other, and the long grooves are suitable for folding the sound absorbing board.

[0008] Further, one of the first direction X and the second direction Y is a length direction of the sound absorbing plate, and the other is a width direction of the sound absorbing plate.

[0009] Furthermore, the cross-section of the long groove is in the shape of a triangle or a trapezoid, the sound absorbing plate is provided with a connecting portion corresponding to the position of the long groove, the width of the cross-section of the long groove decreases toward the side where the connecting portion is located, and the cross-section of the long groove refers to the cross-section obtained by cutting the long groove through a plane perpendicular to the second direction Y.

[0010] Furthermore, a solid portion is formed between two adjacent long grooves, and an angle α1 between two adjacent surfaces of two adjacent solid portions is greater than or equal to 45°.

[0011] Furthermore, the depth of the long groove is not less than one third of the thickness of the sound absorbing plate.

[0012] Furthermore, the difference between the thickness of the sound absorbing plate and the depth of the long groove is not less than 1 mm.

[0013] Furthermore, the center distance between two adjacent long grooves is not less than twice the thickness of the sound absorbing plate.

[0014] Furthermore, a solid portion is formed between two adjacent long grooves, and after the sound absorbing plate is folded, a first portion and a second portion arranged opposite to the first portion are formed, and the first portion and the second portion are in contact with each other.

[0015] Furthermore, two surfaces of the solid part intersect to form a tip, and after the sound absorbing board is folded, the tips of the two opposite solid parts of the first part and the second part are in contact; or,

[0016] The two surfaces of the solid part are connected through the end surface. After the sound absorbing board is folded, a first part and a second part arranged opposite to the first part are formed. The end surfaces of the solid parts of the first part and the second part are in contact.

[0017] Furthermore, the two opposite solid parts of the first part and the second part are connected by gluing or nailing.

[0018] Further, the plurality of long grooves are distributed over the entire surface of the sound absorbing plate along the first direction X; or,

[0019] The surface of the sound absorbing plate used for setting the long grooves comprises at least one first long groove area, where the first long groove area is used for setting the long grooves and is located at one end of the sound absorbing plate along the first direction X.

[0020] Furthermore, the material of the sound absorbing board is melamine sound absorbing foam, melamine cotton, polyurethane foam or polyester fiber.

[0021] Furthermore, the sound absorbing plate is made of a flexible porous material.

[0022] Further, the sound absorbing plate comprises a plurality of first slit groups arranged at intervals along a first direction X, each of the first slit groups comprises a plurality of first slits arranged at intervals along the second direction Y, and the first slits penetrate two surfaces of the sound absorbing plate in a thickness direction Z; and / or,

[0023] The sound absorbing plate includes a second slit group arranged at intervals along a second direction Y, each of the second slit groups includes a plurality of second slits arranged at intervals along the first direction X, and the second slits located on the outermost sides of the second slit group are connected to the two side surfaces of the sound absorbing plate along the second direction Y, and the second slits run through the two surfaces of the sound absorbing plate in the thickness direction Z.

[0024] Furthermore, the surface of the sound absorbing board is provided with fluff to cover the cut seams.

[0025] Further, a plurality of the first slit groups are distributed throughout the entire sound absorbing board along the first direction X; or,

[0026] The sound absorbing plate is provided with at least one first slit area, and the first slit group is arranged in the first slit area.

[0027] Further, a plurality of the second slit groups are distributed throughout the entire sound absorbing board along the second direction Y; or,

[0028] The sound absorbing plate is provided with at least one second slit area, and the second slit group is arranged in the second slit area.

[0029] Compared with the prior art, the present invention has the following beneficial effects: one or two of the two surfaces of the sound absorbing board in the thickness direction Z of the present invention are provided with a plurality of long grooves arranged at intervals along the first direction X, and the long grooves extend along the second direction Y and extend to the outer side surface that passes through the sound absorbing board. When the size of the sound absorbing board is too large and needs to be reduced, the sound absorbing board can be folded by the long grooves, so as to adjust the size of the sound absorbing board along the first direction X. The size of the sound absorbing board can be adjusted without cutting the sound absorbing board, which is more convenient. Moreover, adjusting the size of the sound absorbing board by bending the sound absorbing board by the long grooves is conducive to obtaining better dimensional accuracy and reducing the size and shape errors caused by manual cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional schematic diagram of the sound absorbing panel of some embodiments of the present invention.

[0031] Figure 2 1 is a side view of a sound absorbing panel according to some embodiments of the present invention.

[0032] Figure 3a 1 is a plan view of a sound absorbing panel according to some embodiments of the present invention. In the figure, the sound absorbing panel is roughly circular.

[0033] Figure 3b 1 is a plan view of a sound absorbing panel according to some embodiments of the present invention. In the figure, the sound absorbing panel is roughly trapezoidal.

[0034] Figure 4 yes Figure 2Enlarged view of part I in the middle.

[0035] Figure 5a yes Figure 1 Schematic diagram of the sound-absorbing panel after folding.

[0036] Figure 5b yes Figure 5a A side view of the acoustic panel is shown.

[0037] Figure 5c It is a schematic diagram of the sound absorbing panels of some embodiments of the present invention being folded from both ends.

[0038] Figure 6a 1 is a plan view of a sound absorbing panel of some embodiments of the present invention. In the figure, a first direction X and a second direction Y are respectively a length direction and a width direction of the sound absorbing panel.

[0039] Figure 6b 1 is a plan view of a sound absorbing panel of some embodiments of the present invention. In the figure, a first direction X and a second direction Y are respectively a length direction and a width direction of the sound absorbing panel.

[0040] Figure 7 1 is a plan view of a sound absorbing panel according to some embodiments of the present invention. In the figure, the sound absorbing panel is in a parallelogram shape.

[0041] Figure 8 is a schematic diagram of the folded sound-absorbing panels of some embodiments of the present invention, and the folding direction is Figure 5a to Figure 5c The folding directions are opposite.

[0042] Figure 9a Schematic diagram of a folded sound-absorbing panel in some embodiments of the present invention, in which the cross section of the solid part is triangular.

[0043] Figure 9b Schematic diagram of a folded sound-absorbing panel in some embodiments of the present invention, in which the cross section of the solid part is trapezoidal.

[0044] Fig.10a 1 is a plan view of a sound absorbing panel according to some embodiments of the present invention, in which a long groove area is provided at one end of the sound absorbing panel.

[0045] Fig.10b 1 is a plan view of a sound absorbing panel according to some embodiments of the present invention, in which long groove areas are provided at both ends of the sound absorbing panel.

[0046] Fig.11 It is a curve diagram of sound absorption coefficient of folded and undone sound absorption panels in some embodiments of the present invention.

[0047] Fig.12 Schematic diagram of the structure of the sound absorbing board of some embodiments of the present invention, in which the sound absorbing board has slits.

[0048] Fig.13 yes Fig.12 A plan view of the acoustic panel is shown.

[0049] Fig.14 yes Fig.13 Enlarged view of part II.

[0050] Fig.15 It is a partial schematic diagram of the sound absorbing panel of some embodiments of the present invention.

[0051] Fig.16 1 is a plan view of a sound absorbing panel of some embodiments of the present invention, in which the sound absorbing panel includes cross-arranged slits.

[0052] Fig.17 yes Fig.16 Enlarged view of part III.

[0053] Fig.18 1 is a plan view of a sound absorbing panel of some embodiments of the present invention, in which the sound absorbing panel is provided with a first slit area and a second slit area.

[0054] Fig.19 1 is a plan view of a sound absorbing panel according to some embodiments of the present invention.

[0055] Fig. 20 Schematic diagram of the structure of the sound absorbing board of some embodiments of the present invention, in which the sound absorbing board is provided with long grooves and slits at the same time. DETAILED DESCRIPTION

[0056] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0057] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0058] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0059] Example 1

[0060] like Figure 1 and Figure 2 As shown, the present invention proposes a sound absorbing plate, at least one of the two surfaces in the thickness direction Z is provided with a plurality of long grooves 10 arranged at intervals along the first direction X, the long grooves 10 extend along the second direction Y and extend to the outer side surface 1c that passes through the sound absorbing plate, and the first direction X, the second direction Y and the thickness direction Z are perpendicular to each other (the angles between them are all 90°).

[0061] The sound absorbing plate is generally plate-shaped, and has two surfaces located at both ends of the thickness direction Z thereof and an outer side surface 1c connected between the two surfaces. For the convenience of description, the two surfaces of the sound absorbing plate along the thickness direction Z are referred to as the first surface 1a and the second surface 1b hereinafter. Figure 1 and Figure 2 The sound absorbing panel shown is provided with long grooves 10 on only one surface (first surface 1 a ).

[0062] Figure 1 The sound absorbing panel shown is rectangular. Usually, the wall is rectangular in shape. Therefore, the rectangular sound absorbing panel can better fit the wall. It can be understood that the laying area of ​​the sound absorbing panel does not have to be the wall, but can also be other laying areas. The sound absorbing panel can also be designed into other shapes as needed, for example, Figure 3a In the illustrated embodiment, the sound absorbing panel is substantially circular and suitable for being laid in a circular area. Figure 3b In the illustrated embodiment, the sound absorbing board is in a trapezoidal shape, and is suitable for being laid in a trapezoidal area. In other embodiments, the sound absorbing board may also be in other shapes.

[0063] like Figure 2 and Figure 4 As shown, the sound absorbing board forms a connection portion 11 corresponding to the position of the long groove 10, specifically, the connection portion 11 is formed between the bottom of the long groove 10 and the second surface 1b. Since the thickness B2 of the connection portion 11 is relatively smaller and the long groove 10 provides a space for the sound absorbing board to deform, the long groove 10 is suitable for the sound absorbing board to be folded.

[0064] When the size of the sound absorbing board is too large and needs to be reduced, the sound absorbing board can be folded through the long groove 10 to form a first part 20 and a second part 21 located on both sides of the folding position 14, so as to adjust the size of the sound absorbing board along the first direction X. The size of the sound absorbing board can be adjusted without cutting the sound absorbing board, which is more convenient. Moreover, adjusting the size of the sound absorbing board by bending the long groove 10 is conducive to obtaining better dimensional accuracy. Figure 5a to Figure 5c The folded sound absorbing panels of some embodiments are shown, in which the first portion 20 and the second portion 21 are folded to be parallel (folded 180°). Figure 5a and Figure 5b In the case of a sound absorbing panel, only one end is folded over. Figure 5c Both ends of the middle sound absorbing board are folded. After the sound absorbing board is folded, the length dimension L of the sound absorbing board is the length dimension of the first part 20, and the length dimension L becomes smaller, so that the sound absorbing board with too large length can adapt to the laying area with smaller length.

[0065] In some embodiments, one of the first direction X and the second direction Y is the length direction of the sound absorbing board, and the other is the width direction of the sound absorbing board. In this way, the long groove 10 is arranged along the length direction or the width direction of the sound absorbing board. When the sound absorbing board is folded by the long groove 10, the size of the sound absorbing board in the length direction or the width direction can be adjusted. For example, Figure 6a In the illustrated embodiment, the first direction X and the second direction Y are respectively the length direction and the width direction of the sound absorbing plate, and the length of the sound absorbing plate can be adjusted by the long groove 10. Figure 6b In the illustrated embodiment, the first direction X and the second direction Y are respectively the width direction and the length direction of the sound absorbing plate, and the width of the sound absorbing plate can be adjusted by the long grooves 10 .

[0066] It can be understood that the first direction X and the second direction Y do not necessarily correspond to the length direction or the width direction of the sound absorbing plate, and may also be arranged to be inclined relative to each other. Figure 7 In the illustrated embodiment, the first direction X and the second direction Y are arranged obliquely with respect to the length direction and the width direction of the sound absorbing plate.

[0067] Optionally, referring to FIG5 , when folding, the sound absorbing board is folded toward the side where the long groove 10 is located, so that the surface (second surface 1b) without the long groove 10 can be kept flat, and this surface can be used as a decorative surface facing the room, without affecting the decorative effect of the sound absorbing board. It is understandable that in the case where the decoration requirements for the sound absorbing board are not high (or in the case of other special requirements), the sound absorbing board can also be folded away from the side where the long groove 10 is located, forming Figure 8 In the structure shown, at this time, there will be a long groove 10 facing the room.

[0068] refer to Figure 4In order to facilitate the folding of the long groove 10, in some embodiments, the depth H of the long groove 10 is not less than one third of the thickness B1 of the sound absorbing board (i.e., the thickness B2 of the connecting portion 11 is not more than two thirds of the thickness B1 of the sound absorbing board). In this way, the sound absorbing board can be folded more easily. The depth H of the long groove 10 is its dimension along the thickness direction Z of the sound absorbing board. A solid part 12 is formed between two adjacent long grooves 10. The dimension along the thickness direction Z between the outermost point of the solid part 12 and the lowest point of the long groove 10 in the thickness direction Z is the depth H of the long groove 10.

[0069] Further optionally, the difference between the thickness B1 of the sound absorbing board and the depth H of the long groove 10 (i.e., the thickness B2 of the connecting portion 11) is not less than 1 mm, so as to prevent the sound absorbing board from being easily broken due to the thickness B2 of the connecting portion 11 being too small, thereby ensuring the reliability of the use of the sound absorbing board. For example, for a sound absorbing board with a thickness of 9 mm, the depth H of the long groove 10 can be between 3 mm and 8 mm; for a sound absorbing board with a thickness of 12 mm, the depth H of the long groove 10 can be between 4 mm and 11 mm.

[0070] The cross-sectional shape of the long groove 10 is not limited, for example, it can be a rectangle, an arc, a triangle or a trapezoid, etc. It can be understood that the cross-sectional shape of the solid part 12 depends on the cross-sectional shape of the long groove 10. The cross-sectional shape of the long groove 10 and the cross-sectional shape of the solid part 12 refer to the cross-sectional shape obtained by cutting the long groove 10 and the solid part 12 through a plane perpendicular to the second direction Y. For the cross-sectional shape of the long groove 10, the first auxiliary line 10a at the opening can be added to make the cross-sectional shape of the long groove 10 form a closed shape. Similarly, the bottom of the solid part 12 can also be supplemented with a second auxiliary line 11a to make its cross-sectional shape clearer. Figure 4 The first auxiliary line 10a and the second auxiliary line 11a are indicated by dotted lines.

[0071] In some embodiments, the width of the opening side of the cross section of the long groove 10 is greater than the width of the bottom thereof (the width direction of the long groove 10 is consistent with the first direction X), so that the sound absorbing board is easier to fold, and the situation that the folding is difficult due to the extrusion between the solid parts 12 at the folding position is alleviated. Optionally, the cross section of the long groove 10 is triangular or trapezoidal, and the width of the cross section decreases toward the side where the connecting part 11 is located. Obviously, the width of the cross section of the solid part is opposite to the long groove 10, and will increase toward the side where the connecting part 11 is located.

[0072] Optionally, the two side surfaces 120 of the long groove 10 are planar and relatively inclined, and the angle α1 between the two side surfaces 120 is less than or equal to 90°. Figure 4As shown, the angle α2 between the side surface 120 and the second surface 1b is 45°, so the angle α1 between the two side surfaces 120 is equal to 90°. When the sound absorbing board is folded, the side surfaces of the two adjacent solid parts 12 (i.e., the side surfaces 120) will fit together at the folded position, so that the folded sound absorbing board has better dimensional accuracy. In other embodiments, the angle α2 between the side surface 120 and the first direction X can be set to be greater than 45°. Since the two side surfaces 120 are symmetrical, the angle α1 between the two side surfaces 120 is less than 90°. It can be understood that the two side surfaces 120 can also be asymmetrical. In the case of asymmetry, the angle α1 between the two side surfaces 120 can also be selected to be less than or equal to 90°.

[0073] Optionally, the center distance L4 between two adjacent long grooves 10 is not less than twice the depth H of the long groove 10. It can be understood that the depth H of the long groove 10 is the thickness of the solid part 12. When the center distance L4 is less than twice the depth H of the long groove 10, the two opposite solid parts 12 will be squeezed after folding, which is not conducive to maintaining the stability of the shape of the sound absorbing board. When the center distance L4 is greater than or equal to twice the depth H of the long groove 10, the squeezing between the two opposite solid parts 12 after folding will be better, and it is easier to maintain the stability of the shape of the sound absorbing board. Further optionally, the center distance L4 between two adjacent long grooves 10 is equal to twice the depth H of the long groove 10, which can reduce the gap in the sound absorbing board after folding and ensure the sound absorption effect and structural strength.

[0074] like Figure 5a to Figure 5c As shown, after the sound absorbing plate is folded, a first portion 20 and a second portion 21 arranged opposite to the first portion 20 are formed, and the first portion 20 and the second portion 21 are in contact with each other. In this way, in the thickness direction Z, the structural strength of the portion where the first portion 20 and the second portion 21 overlap is better. In some embodiments, as Figure 9a As shown, the two opposite side surfaces of the solid part 12 intersect to form a tip 122. After the sound absorbing board is folded, the tips 122 of the two opposite solid parts 12 of the first part 20 and the second part 21 are in contact. Figure 9b As shown, the two opposite surfaces of the solid part 12 are not in contact, and the two are connected by an end face 121. It can be understood that the end face 121 is a part of the first surface 1a. After the sound-absorbing panel is folded, the end faces 121 of the solid parts 12 of the first part 20 and the second part 21 are in contact, and the contact area between the two is larger, which makes it easier to position and ensure the structural strength.

[0075] Optionally, after the first portion 20 and the second portion 21 are folded to be arranged opposite to each other, the first portion 20 and the second portion 21 contact the solid portion 12 at the corner (for example Figure 9bThe first part 20 and the second part 21 may be fixed with hot melt adhesive, double-sided adhesive or short nails. The two opposite solid parts 12 of the first part 20 and the second part 21 may also be connected together, for example, by gluing or nailing, so that the shape of the folded sound absorbing board is more stable.

[0076] Figure 1 In the illustrated embodiment, the plurality of long grooves 10 are distributed along the first direction X on the entire surface of the sound absorbing plate. Of course, this is not necessary. In other embodiments, the long grooves 10 may be provided only on a portion of the surface of the sound absorbing plate. Fig.10a and Fig.10b The surface of the sound absorbing board for setting the long groove 10 (the first surface 1a in the figure) includes a long groove area 13a and a decorative surface area 13b. In the figure, the approximate boundaries between different areas are indicated by double-dash lines. The long groove area 13a is used to set the long groove 10. Optionally, the long groove area 13a is located at one end of the sound absorbing board along the first direction X, so that the size of the sound absorbing board can be adjusted by folding the sound absorbing board at the long groove at the end. Fig.10a In the embodiment shown, the number of the long groove area 13a is one and is located at one end of the sound absorbing plate in the first direction. Of course, the number of the long groove area 13a is not limited to one. For example, Fig.10b In the illustrated embodiment, the number of the long groove areas 13a is two. Optionally, when the number of the long groove areas 13a is two, the two long groove areas 13a are respectively located at the two ends of the sound absorbing board in the first direction X, so as to adjust the size of the sound absorbing board from both ends. In addition, when the number of the long groove areas 13a is two or more, the two or more long groove areas 13a are not limited to being located only on one surface of the sound absorbing board, and some of the long groove areas 13a can also be provided on one surface of the sound absorbing board, and the other long groove areas 13a can be provided on the other surface of the sound absorbing board.

[0077] The length of the long groove area 13a along the first direction X determines the maximum size of the sound absorbing board that can be adjusted. Optionally, the total length of all the long groove areas 13a along the first direction X accounts for a ratio greater than or equal to one half of the length L of the sound absorbing board when it is not folded. Figure 1 In the embodiment of the configuration, the adjustable size of the sound absorbing board is approximately half of the length L of the sound absorbing board when it is not folded. When the total length of all the long groove areas 13a along the first direction X accounts for a ratio of greater than or equal to one half of the length L of the sound absorbing board when it is not folded, the adjustment can be basically achieved. Figure 1 Similar length adjustment range to the illustrated embodiment.

[0078] It is understandable that in order to enable the sound-absorbing board to be folded and not prone to breakage, the sound-absorbing board is preferably made of a flexible porous material with good sound absorption and anti-breakage properties. When a 9 mm thick board is folded at least 100 times without breaking, it can be considered that the board is made of a flexible material. Optionally, the material of the sound-absorbing board is melamine sound-absorbing foam, melamine cotton, polyurethane foam or polyester fiber.

[0079] Adjusting the size of the sound-absorbing panel by folding it has little effect on the sound absorption coefficient, such as Fig.11 As shown, Fig.11 In the embodiment shown, the length L1 of the folded portion (i.e., the second portion) of the sound absorbing plate is shown (see reference numerals). Figure 9b ) accounts for 10%, 50% and 90% of the length L of the sound-absorbing panel when it is not folded. It can be seen from the figure that when the sound-absorbing panel is folded, the sound absorption coefficient increases slightly, but the increase is not large and will not have much impact on the acoustic properties of the wall.

[0080] Example 2

[0081] It is understandable that the solution described in Example 1 adjusts the size of the sound absorbing board by folding along the long groove 10, so that the size of the sound absorbing board can be conveniently adjusted according to the actual wall size. However, the minimum width that can be adjusted is limited. Generally, the minimum width that can be adjusted is not less than the width of a solid part 12. This embodiment is intended to enable the size of the sound absorbing board to be adjusted on a smaller scale.

[0082] In some embodiments, Fig.12 As shown, the sound absorbing board includes a plurality of first slit groups 30 arranged at intervals along a first direction X, and each first slit group 30 includes a plurality of first slits 31 arranged at intervals along a second direction Y, and the first slits 31 penetrate the two surfaces of the sound absorbing board in the thickness direction Z. The arrangement of the first slit groups 30 enables the gaps of the first slits 31 to become wider and deformed when the sound absorbing board is stretched along the first direction X, so that the sound absorbing board can be more easily stretched along the first direction X and its size in the first direction X can be fine-tuned. In this way, when the size of the wall is slightly different from that of the sound absorbing board, the size of the sound absorbing board and the wall can be matched by stretching the sound absorbing board, which makes the construction more convenient, and can be easily covered on the wall, making it more beautiful.

[0083] In some embodiments, at least part of the first slit groups 30 located at the outermost first slits 31 are connected to the outer side surface 1c of the sound absorbing board, so that the outer edge of the sound absorbing board does not play a framing role, and it is easier to stretch the sound absorbing board along the first direction X to deform the sound absorbing board. Further, optionally, among two adjacent first slit groups 30, at least one of the first slit groups 30 located at the outermost first slits 31 is connected to the outer side surface 1c of the sound absorbing board, for example, Figure 12 to Figure 14 In the illustrated embodiment, the outermost first slit 31 of one of the two adjacent first slit groups 30 is connected to the outer side surface 1c of the sound absorbing board, while the other is not connected, so that the sound absorbing board can maintain a certain structural strength while being easily stretched and deformed. Fig.15 In the illustrated embodiment, the outermost first slits 31 of all first slit groups 30 are connected to the outer side surface 1c of the sound absorbing board, so that the sound absorbing board is more easily stretched and deformed. It is understandable that there are two outermost first slits 31 of the first slit group 30, one of which may be connected to the outer side surface 1c of the sound absorbing board and the other may not be connected, or both of the outermost two first slits 31 may be connected to the outer side surface 1c of the sound absorbing board, so that the sound absorbing board can be deformed more evenly.

[0084] Optionally, the plurality of first slits 31 of the first slit group 30 are located on the same straight line, so that the sound absorbing plate 30 can be better deformed along the first direction X and is less likely to be distorted in shape.

[0085] refer to Figures 12 to 14 Two first slits 31 adjacent to each other in the first direction X are staggered in the second direction Y, so that the sound absorbing plate can reliably deform along the first direction X and has good structural strength.

[0086] It is understandable that parameters such as the number and spacing of the first slit groups 30 and the number, spacing and length of the first slits 31 have a great influence on the difficulty and elongation of the sound absorbing panel.

[0087] In some embodiments, reference Fig.14 , the distance D1 between two adjacent first slits 31 of the first slit group 30 along the second direction Y is 5 to 100 mm, so that the distance D1 between two adjacent first slits 31 is not too large to cause too small deformation of the sound absorbing board, nor is it too close to cause insufficient strength of the sound absorbing board and easy to tear. It can be understood that the distance between each two adjacent first slits 31 can be the same (that is, the first slits 31 of the first slit group 30 are arranged at equal distances) or different (that is, the first slits 31 of the first slit group 30 are arranged at unequal distances).

[0088] For ease of description, the slits connected to the outer side surface 1c of the sound absorbing plate are referred to as outer slits, and the slits not connected to the outer side surface 1c of the sound absorbing plate are referred to as inner slits. Fig.14 The length L2 of the inner slits of the first slit group 30 is 10 to 60 mm, so that the first slits 31 have a suitable length, and the sound absorbing board has a good deformation amount after stretching while ensuring the structural strength of the sound absorbing board. It can be understood that the lengths of all the inner slits can be the same, or the lengths of at least two inner slits can be different.

[0089] In some embodiments, reference Fig.14 , the spacing D2 between two adjacent first slit groups 30 along the first direction X is 3 to 300 mm, so that the spacing between two adjacent first slit groups 30 is more appropriate. On the one hand, the distance between two adjacent first slits 31 is not too small, which is conducive to ensuring the overall structural strength of the sound absorbing board, and can also prevent the adjacent slits from contacting due to misoperation during processing, and avoid the sound absorbing board from being cut off. On the other hand, the spacing between two adjacent first slits 31 is not too large, resulting in a small deformation amount or uneven deformation of the sound absorbing board. It can be understood that the distance between each two adjacent first slit groups 30 can be the same (that is, the first slit groups 30 are arranged at equal distances) or different (that is, the first slit groups 30 are arranged at unequal distances).

[0090] It can be understood that when the slit groups are arranged along the first direction X, the sound absorbing board is more suitable for stretching and deforming along the first direction X. In order to enable the sound absorbing board to adjust its size in more directions to adapt to walls of different sizes, in some embodiments, reference Fig.16 and Fig.17 The sound absorbing board further includes a plurality of second slit groups 32 arranged at intervals along the second direction Y, each second slit group 32 includes a plurality of second slits 33 arranged at intervals along the first direction X, and the second slits 33 penetrate the two surfaces of the sound absorbing board in the thickness direction Z. In this way, the size of the sound absorbing board can be adjusted along the first direction X and the second direction Y, and can adapt to more situations where the size needs to be adjusted.

[0091] The structure and parameters of the second slit group 32 may refer to the above description of the first slit group 30 , and an example is as follows.

[0092] In some embodiments, at least part of the second slit groups 32 located at the outermost second slits 33 are connected to the outer side surface 1c of the sound absorbing board, so that the outer edge of the sound absorbing board does not play a framing role, and it is easier to stretch the sound absorbing board along the second direction Y to deform the sound absorbing board. Further, optionally, among two adjacent second slit groups 32, at least one of the second slit groups 32 located at the outermost second slits 33 is connected to the outer side surface 1c of the sound absorbing board, for example, Fig.16 and Fig.17 In the illustrated embodiment, the outermost second slit 33 of one of the two adjacent second slit groups 32 is connected to the outer side surface 1c of the sound absorbing board, while the other is not connected, so that the sound absorbing board can maintain a certain structural strength while being easily stretched and deformed. For another example, it can be arranged that the outermost second slits 33 of all the second slit groups 32 are connected to the outer side surface 1c of the sound absorbing board, so that the sound absorbing board is more easily stretched and deformed. It can be understood that there are two outermost second slits 33 of the second slit group 32, one of which can be connected to the outer side surface 1c of the sound absorbing board and the other not, or both of the outermost two second slits 33 can be connected to the outer side surface 1c of the sound absorbing board, so that the sound absorbing board can be deformed more evenly.

[0093] Optionally, the plurality of second slits 33 of the second slit group 32 are located on the same straight line, so that the sound absorbing plate 30 can be better deformed along the second direction Y and is less likely to be distorted in shape.

[0094] refer to Fig.16 and Fig.17 The two second slits 33 adjacent to each other in the second direction Y are staggered in the first direction X, so that the sound absorbing plate can reliably deform along the second direction Y and has good structural strength.

[0095] In some embodiments, the outermost second slit 33 (ie, outer slit) of the second slit group 32 is connected to the outer side surface 1c of the sound absorbing board, so that the outer edge of the sound absorbing board does not act as a frame, making it easier for the sound absorbing board to stretch along the second direction Y.

[0096] It can be understood that, similarly, parameters such as the number and spacing of the second slit groups 32 and the number, spacing and length of the second slits 33 have a great influence on the elongation of the sound absorbing panel.

[0097] In some embodiments, reference Fig.17 , the distance D3 between two adjacent second slits 33 of the second slit group 32 along the first direction X is 5 to 100 mm, so that the distance between two adjacent second slits 33 is not too large to cause too small deformation of the sound absorbing board, nor is it too close to cause insufficient strength of the sound absorbing board and easy to tear. It can be understood that the distance between every two adjacent second slits 33 can be the same (that is, the second slits 33 of the second slit group 32 are arranged at equal distances), or different (that is, the second slits 33 of the second slit group 32 are arranged at unequal distances).

[0098] In some embodiments, reference Fig.17The length L3 of the second slit 33 is 10 to 60 mm, so that the second slit 33 has a suitable length, and the sound absorbing board has a good deformation amount after stretching while ensuring the structural strength of the sound absorbing board. It can be understood that the lengths of all the second slits 33 can be the same, or the lengths of at least two second slits 33 can be different.

[0099] In some embodiments, reference Fig.17 , the spacing D4 between two adjacent second slit groups 32 along the second direction Y is 3 to 300 mm, so that the spacing between two adjacent second slit groups 32 is more appropriate. On the one hand, the distance between two adjacent second slits 33 is not too small, which is conducive to ensuring the overall structural strength of the sound absorbing board, and can also prevent the adjacent slits from contacting due to misoperation during processing, avoiding the sound absorbing board from being cut off. On the other hand, the spacing between two adjacent second slits 33 is not too large, resulting in a small deformation amount or uneven deformation of the sound absorbing board. It can be understood that the distance between each two adjacent second slit groups 32 can be the same (that is, the second slit groups 32 are arranged at equal distances) or different (that is, the second slit groups 32 are arranged at unequal distances).

[0100] Optionally, the surface of the sound absorbing board is covered with fluff, which may be of the material itself (for example, PET board itself has fluff), or may be added later. When the sound absorbing board is stretched and the deformation of the sound absorbing board in the first direction X and / or the second direction Y does not exceed 2%, since the deformation of each cut is very small, the cut is basically unrecognizable under the coverage of the fluff, which is more beautiful.

[0101] By providing the slit groups arranged at intervals in the first direction X and the second direction Y of the sound absorbing plate, the size of the sound absorbing plate in the first direction X and the second direction Y can be adjusted. When the length and / or width of the sound absorbing plate is slightly smaller than the wall, the sound absorbing plate can be stretched to make its length and / or width adapt to the size of the wall, so as to more fully cover the wall and ensure the aesthetics and sound absorption effect.

[0102] In some embodiments, a plurality of first slit groups 30 are distributed throughout the entire sound absorbing board along the first direction X, so that the adjustable size range of the sound absorbing board can be maximized. In other embodiments, the sound absorbing board is provided with at least one first slit area 34, and the first slit group 30 is provided in the first slit area 34, so that the size range of the sound absorbing board that can be stretched can be adjusted by adjusting the size of the first slit area 34 in the first direction X, thereby reducing damage to the sound absorbing board and ensuring aesthetics. Fig.18 The case where one first slit area 34 is provided is shown. When there are two or more first slit areas 34 , the plurality of first slit areas 34 are arranged along the first direction X at intervals.

[0103] Similarly, in some embodiments, a plurality of second slit groups 32 are distributed throughout the entire sound absorbing board along the second direction Y, so that the adjustable size range of the sound absorbing board can be maximized. In other embodiments, the sound absorbing board is provided with at least one second slit area 35, and the second slit group 32 is provided in the second slit area 35, so that the size range of the sound absorbing board that can be stretched can be adjusted by adjusting the size of the second slit area 35 in the second direction Y, thereby reducing damage to the sound absorbing board and ensuring aesthetics. Fig.18 The case where one second slit area 35 is provided is shown. When there are two or more second slit areas 35 , the plurality of second slit areas 35 are arranged along the second direction Y at intervals.

[0104] It is understandable that when stretching the sound absorbing board, the part that needs to be stretched can be stretched as needed, without stretching the entire board. For example, Fig.19 In the case shown, the sound absorbing plate is tilted at one side for some reason, so the sound absorbing plate is trapezoidal. At this time, the upper left corner can be stretched to deform it into a rectangle ( Fig.18 By stretching different parts of the sound-absorbing board, the shape of the sound-absorbing board can be adjusted more flexibly according to the usage scenario, making it more convenient to use.

[0105] Example 3

[0106] It is understandable that embodiment 1 and embodiment 2 can be arranged in combination, so that the size of the sound absorbing panel can be adjusted within a larger size range by folding, and can also be adjusted within a smaller size range by stretching, and the adjustment method is more flexible.

[0107] In some embodiments, Fig. 20 As shown, the sound absorbing board includes a plurality of long grooves arranged at intervals along the first direction X, and also includes a plurality of first slit groups 30 arranged at intervals along the first direction X, so that the size of the sound absorbing board in the first direction X can be roughly and finely adjusted. In a possible scenario, the length of the sound absorbing board is smaller than the length of the wall. In this case, the sound absorbing board is first folded to be slightly smaller than the length of the wall, and then the sound absorbing board is stretched to make the length of the sound absorbing board consistent with the length of the wall, so that the wall can be reliably covered.

[0108] In some embodiments, the sound absorbing board includes a plurality of long grooves 10 arranged at intervals along the first direction X, and also includes a plurality of second slit groups 32 arranged at intervals along the second direction Y. In this way, the size of the sound absorbing board in the first direction X can be roughly adjusted by folding, and the size of the sound absorbing board in the second direction Y can be finely adjusted by stretching. In a possible scenario, the length of the sound absorbing board is less than the length of the wall, and the width is slightly less than the width of the wall. In this case, the sound absorbing board is first folded to make its length consistent with the length of the wall, and then the sound absorbing board is stretched along the second direction Y to make its width consistent with the width of the wall, so that the length and width of the sound absorbing board are adapted to the wall.

[0109] In some embodiments, the sound absorbing board includes a plurality of long grooves 10 arranged at intervals along the first direction X, and also includes a plurality of first slit groups 30 arranged at intervals along the first direction X and a plurality of second slit groups 32 arranged along the second direction Y. In this way, the size of the sound absorbing board in the first direction X can be roughly adjusted by folding, and the size of the sound absorbing board in the first direction X and the second direction Y can be fine-tuned by stretching. In a possible scenario, the length of the sound absorbing board is less than the length of the wall, and the width is slightly less than the width of the wall. In this case, the sound absorbing board is first folded to make its length slightly less than the length of the wall, and then the sound absorbing board is stretched along the first direction X and the second direction Y to make the length and width of the sound absorbing board consistent with the length and width of the wall, so that the sound absorbing board can cover the entire wall.

[0110] Since there is no need to cut the sound absorbing board, it is helpful to simplify the steps of adjusting the size of the sound absorbing board, making the operation more convenient, and it is helpful to prevent large size errors caused by manual cutting, which is helpful to ensure dimensional accuracy.

[0111] The above are only specific embodiments of the present invention, and any other improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. A sound absorbing panel, characterized in that: One or both of the two surfaces of the sound absorbing board in the thickness direction Z are provided with a plurality of long grooves (10) arranged at intervals along a first direction X, the long grooves (10) extending along a second direction Y and extending to pass through an outer side surface (1c) of the sound absorbing board, the first direction X, the second direction Y and the thickness direction Z being perpendicular to each other, and the long grooves (10) being suitable for folding the sound absorbing board.

2. The sound absorbing panel according to claim 1, characterized in that: One of the first direction X and the second direction Y is the length direction of the sound absorbing plate, and the other is the width direction of the sound absorbing plate.

3. The sound absorbing panel according to claim 1, characterized in that: The cross-section of the long groove (10) is in a triangular or trapezoidal shape, the sound absorbing plate is provided with a connecting portion (11) corresponding to the position of the long groove (10), the width of the cross-section of the long groove (10) decreases toward the side where the connecting portion (11) is located, and the cross-section of the long groove (10) refers to a cross-section obtained by cutting the long groove (10) through a plane perpendicular to the second direction Y.

4. The sound absorbing panel according to claim 3, characterized in that: A solid portion (12) is formed between two adjacent long grooves (10), and an angle α1 between two adjacent surfaces (120) of the two adjacent solid portions (12) is greater than or equal to 45°.

5. The sound absorbing panel according to claim 3, characterized in that: The depth of the long groove (10) is not less than one third of the thickness of the sound absorbing plate.

6. The sound absorbing panel according to claim 5, characterized in that: The difference between the thickness of the sound absorbing plate and the depth of the long groove (10) is not less than 1 mm.

7. The sound absorbing panel according to claim 1, characterized in that: The center distance between two adjacent long grooves (10) is not less than twice the thickness of the sound absorbing plate.

8. The sound absorbing panel according to claim 1, characterized in that: A solid portion (12) is formed between two adjacent long grooves (10); after the sound absorbing plate is folded, a first portion (20) and a second portion (21) arranged opposite to the first portion (20) are formed; the first portion (20) and the second portion (21) are in contact with each other.

9. The sound absorbing panel according to claim 8, characterized in that: The two surfaces of the solid part (12) intersect to form a tip (122), and after the sound absorbing plate is folded, the tips (122) of the two opposite solid parts (12) of the first part (20) and the second part (21) are in contact; or, The two surfaces of the solid part (12) are connected via an end surface (121); after the sound absorbing plate is folded, a first part (20) and a second part (21) arranged opposite to the first part (20) are formed; the end surfaces (121) of the solid parts (12) of the first part (20) and the second part (21) are in contact.

10. The sound absorbing panel according to claim 8, characterized in that: The two opposite solid parts (12) of the first part (20) and the second part (21) are connected by gluing or nailing.

11. The sound absorbing panel according to claim 1, characterized in that: The plurality of long grooves (10) are distributed along the first direction X over the entire surface of the sound absorbing plate; or, The surface of the sound absorbing plate used for setting the long groove (10) comprises at least one first long groove area (13a), wherein the first long groove area (13a) is used for setting the long groove (10), and the first long groove area (13a) is located at one end of the sound absorbing plate along the first direction X.

12. The sound absorbing panel according to claim 1, characterized in that: The material of the sound absorbing board is melamine sound absorbing foam, melamine cotton, polyurethane foam or polyester fiber.

13. The sound absorbing panel according to claim 1, characterized in that: The sound absorbing plate is made of flexible porous material.

14. The sound absorbing panel according to any one of claims 1 to 13, characterized in that: The sound absorbing plate comprises a plurality of first slit groups (30) arranged at intervals along a first direction X, each of the first slit groups (30) comprises a plurality of first slits (31) arranged at intervals along a second direction Y, the first slits (31) passing through two surfaces of the sound absorbing plate in a thickness direction Z; and / or, The sound absorbing plate comprises a second slit group (32) arranged at intervals along a second direction Y, each of the second slit groups (32) comprises a plurality of second slits (33) arranged at intervals along the first direction X, and the second slits (33) located at the outermost sides of the second slit group (32) are connected to the two side surfaces of the sound absorbing plate along the second direction Y, and the second slits (33) penetrate the two surfaces of the sound absorbing plate in the thickness direction Z.

15. The sound absorbing panel according to claim 14, characterized in that: The surface of the sound absorbing plate is provided with fluff to cover the cut seams.

16. The sound absorbing panel according to claim 14, characterized in that: A plurality of the first slit groups (30) are distributed throughout the entire sound absorbing board along the first direction X; or, The sound absorbing plate is provided with at least one first slit area (34), and the first slit group (30) is arranged in the first slit area (34).

17. The sound absorbing panel according to claim 14, characterized in that: A plurality of the second slit groups (32) are distributed throughout the entire sound absorbing board along the second direction Y; or, The sound absorbing plate is provided with at least one second slit area (35), and the second slit group (32) is arranged in the second slit area (35).

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