Acoustic board

Abstract

The utility model discloses an acoustic board, which relates to the technical field of noise reduction, and is characterized in that at least one of the two surfaces of the acoustic board in the thickness direction Z is provided with a plurality of long grooves which are arranged at intervals along the first direction X, and the long grooves extend along the second direction Y and extend to penetrate through the outer side surface 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 utility model relates to the technical field of noise reduction, 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 discovered a challenge in the actual installation of acoustic panels: while wall dimensions vary from household to household, the panels are of uniform size. Consequently, during installation, the remaining wall area often becomes smaller than the size of a single panel. For example, the width / height of the wall may be smaller than the width / height of the panel. In such cases, the PET panels must be measured and cut on-site before installation.

[0004] This approach has obvious problems: 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 content is only used to help understand the technical solution of this application and does not constitute an admission that the above is prior art. Utility Model Content

[0006] The purpose of the utility model is to provide a sound absorbing board, the size of which can be conveniently adjusted.

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

[0008] Furthermore, 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 triangular or trapezoidal, 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 the 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 panel 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 end faces. After the sound absorbing board is folded, a first part and a second part arranged opposite to the first part are formed. The end faces 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] Furthermore, 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 includes at least one first long groove area, where the first long groove area is used for setting the long grooves. The first long groove area is located at one end of the sound absorbing plate along the first direction X.

[0020] Furthermore, the material of the sound-absorbing panel 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] Furthermore, the sound absorbing plate includes a plurality of first slit groups arranged at intervals along a first direction X, each of the first slit groups includes a plurality of first slits arranged at intervals along a second direction Y, and the first slits penetrate both surfaces of the sound absorbing plate in a thickness direction Z; and / or,

[0023] The sound absorbing plate includes second slit groups arranged at intervals along the second direction Y, each second slit group 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 pass through the two surfaces of the sound absorbing plate in the thickness direction Z.

[0024] Furthermore, the surface of the sound absorbing plate is provided with fluff to cover the slits.

[0025] Furthermore, the plurality of 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 provided in the first slit area.

[0027] Furthermore, 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 provided in the second slit area.

[0029] Compared with the prior art, the present invention has the following beneficial effects: one or both 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 of 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 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 grooves is conducive to obtaining better dimensional accuracy and reducing dimensional 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 panels of some embodiments of the present invention.

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

[0032] Figure 3a 1 is a plan view of a sound absorbing panel in 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 the sound absorbing panels of some embodiments of the present invention. In the figure, the sound absorbing panels are roughly trapezoidal.

[0034] Figure 4 yes Figure 2 Enlarged 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 Side view of the acoustic panel 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, the first direction X and the second direction Y are respectively the length direction and the 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, the first direction X and the second direction Y are respectively the length direction and the width direction of the sound absorbing panel.

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

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

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

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

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

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

[0046] Figure 11 The following is a graph showing the sound absorption coefficient of the folded and undone sound absorption panels in some embodiments of the present invention.

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

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

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

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

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

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

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

[0054] Figure 19 It is a plan view of the sound absorbing panels of some embodiments of the present invention.

[0055] Figure 20 Schematic diagram of the structure of the sound absorbing panel of some embodiments of the present invention. In the figure, the sound absorbing panel is provided with long grooves and slits at the same time. DETAILED DESCRIPTION

[0056] In order to make the above-mentioned objects, 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 will 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, rather than all, structures related to the present application are shown in the accompanying drawings. 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] As used herein, the terms "comprise," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0058] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, 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 provides a sound absorbing panel having at least one of its two surfaces in the thickness direction Z provided with a plurality of long grooves 10 arranged at intervals along a first direction X. The long grooves 10 extend along a second direction Y and extend through the outer side surface 1c of the sound absorbing panel. The first direction X, the second direction Y, and the thickness direction Z are perpendicular to each other (the angles between any two directions 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 sake of convenience, the two surfaces of the sound absorbing plate along the thickness direction Z are hereinafter referred to as the first surface 1a and the second surface 1b. Figure 1 and Figure 2 The illustrated sound absorbing panel is provided with long grooves 10 on only one surface (first surface 1 a ).

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

[0063] like Figure 2 and Figure 4 As shown, the sound absorbing panel has a connecting portion 11 corresponding to the position of the elongated groove 10. Specifically, the connecting portion 11 is formed between the bottom of the elongated groove 10 and the second surface 1b. Because the thickness B2 of the connecting portion 11 is relatively small and the elongated groove 10 provides space for the sound absorbing panel to deform, the elongated groove 10 is suitable for folding the sound absorbing panel.

[0064] When the size of the sound absorbing panel is too large and needs to be reduced, the sound absorbing panel can be folded through the long groove 10 to form a first portion 20 and a second portion 21 located on both sides of the folding position 14, thereby adjusting the size of the sound absorbing panel along the first direction X. The size of the sound absorbing panel can be adjusted without cutting the sound absorbing panel, which is more convenient. Moreover, adjusting the size of the sound absorbing panel by bending the long groove 10 is conducive to obtaining better dimensional accuracy. Figures 5a to 5c The figure shows the folded state of the sound absorbing panels of some embodiments, 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 L of the sound absorbing board is the length L of the first portion 20, and the length L is shortened, so that the sound absorbing board that was originally too long can adapt to the shorter laying area.

[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 length direction or the width direction of the sound absorbing board can be adjusted. For example, Figure 6a In the embodiment shown, 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 can be folded toward the side where the long groove 10 is located, so that the surface (second surface 1b) without the long groove 10 can remain flat. 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 when the decorative requirements for the sound absorbing board are not high (or when there are other special needs), the sound absorbing board can also be folded away from the side where the long groove 10 is located to form Figure 8 In the structure shown, the long slot 10 faces indoors.

[0068] refer to Figure 4To facilitate folding of the long grooves 10, in some embodiments, the depth H of the long grooves 10 is no less than one-third of the thickness B1 of the sound-absorbing panel (i.e., the thickness B2 of the connecting portion 11 is no more than two-thirds of the thickness B1 of the sound-absorbing panel). This allows for easier folding of the sound-absorbing panel. The depth H of the long grooves 10 is its dimension along the thickness direction Z of the sound-absorbing panel. A solid portion 12 is formed between two adjacent long grooves 10. The dimension along the thickness direction Z between the outermost point of the solid portion 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] Optionally, the difference between the thickness B1 of the sound absorbing panel and the depth H of the long grooves 10 (i.e., the thickness B2 of the connecting portion 11) is no less than 1 mm. This prevents the sound absorbing panel from breaking due to the thickness B2 of the connecting portion 11 being too small, thereby ensuring the reliability of the sound absorbing panel. For example, for a 9 mm thick sound absorbing panel, the depth H of the long grooves 10 can be between 3 mm and 8 mm; for a 12 mm thick sound absorbing panel, the depth H of the long grooves 10 can be between 4 mm and 11 mm.

[0070] The cross-sectional shape of the long groove 10 is not limited, and can be, for example, rectangular, arcuate, triangular, or trapezoidal. It is understood that the cross-sectional shape of the solid portion 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 portion 12 refer to the cross-sectional shapes obtained by cutting the long groove 10 and the solid portion 12 through a plane perpendicular to the second direction Y. As for the cross-sectional shape of the long groove 10, a first auxiliary line 10a can be added at its opening to make the cross-sectional shape of the long groove 10 form a closed shape. Similarly, a second auxiliary line 11a can also be added at the bottom of the solid portion 12 to make its cross-sectional shape more clear. 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 open side of the cross-section of the elongated groove 10 is greater than the width of its bottom (the width of the elongated groove 10 is aligned with the first direction X), so that the sound-absorbing panel can be more easily folded, reducing the difficulty of folding due to compression between the solid portions 12 at the fold. Optionally, the cross-section of the elongated groove 10 is triangular or trapezoidal, with the width of the cross-section decreasing toward the connection portion 11. Obviously, the width of the cross-section of the solid portion increases toward the connection portion 11, in the opposite direction of the elongated groove 10.

[0072] Optionally, the two side surfaces 120 of the long groove 10 are plane 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°. Therefore, the angle α1 between the two side surfaces 120 is equal to 90°. When the sound-absorbing panel is folded, the side surfaces of the two adjacent solid portions 12 (i.e., the side surfaces 120) will fit together at the folded position, thereby achieving better dimensional accuracy for the folded sound-absorbing panel. 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 is understood that the two side surfaces 120 can also be asymmetrical. In this case, the angle α1 between the two side surfaces 120 can also be set to be less than or equal to 90°.

[0073] Optionally, the center distance L4 between two adjacent long grooves 10 is no less than twice the depth H of the long grooves 10. It is understood that the depth H of the long grooves 10 is the thickness of the solid portion 12. When the center distance L4 is less than twice the depth H of the long grooves 10, the two opposing solid portions 12 will be squeezed after folding, which is detrimental to maintaining the stability of the sound-absorbing panel's shape. When the center distance L4 is greater than or equal to twice the depth H of the long grooves 10, the squeezing between the two opposing solid portions 12 after folding will be improved, making it easier to maintain the stability of the sound-absorbing panel's shape. Furthermore, optionally, the center distance L4 between two adjacent long grooves 10 is equal to twice the depth H of the long grooves 10. This can reduce gaps within the sound-absorbing panel after folding, ensuring sound absorption and structural strength.

[0074] like Figures 5a to 5c As shown, after the sound absorbing plate is folded, a first portion 20 and a second portion 21 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 portion 12 are not in contact, and the two are connected by an end surface 121. It can be understood that the end surface 121 is a part of the first surface 1a. After the sound-absorbing panel is folded, the end surfaces 121 of the solid portions 12 of the first portion 20 and the second portion 21 are in contact, and the contact area between the two is larger, which makes it easier to position and ensure 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 and second portions 20 and 21 may be fixed together by hot melt adhesive, double-sided tape, or short staples. The two opposing solid portions 12 of the first and second portions 20 and 21 may also be connected together, for example, by gluing or staples, to further stabilize the shape of the folded sound-absorbing panel.

[0076] Figure 1 In the embodiment shown, the plurality of long grooves 10 are distributed along the first direction X over 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. Figure 10a and Figure 10b The surface of the sound-absorbing panel 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-dotted 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 panel along the first direction X. In this way, the size of the sound-absorbing panel can be adjusted by folding the long groove at the end. Figure 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, Figure 10b In the illustrated embodiment, there are two long groove regions 13a. Optionally, when there are two long groove regions 13a, the two long groove regions 13a are located at both ends of the sound absorbing panel in the first direction X, so that the size of the sound absorbing panel can be adjusted from both ends. Furthermore, when there are two or more long groove regions 13a, the two or more long groove regions 13a are not limited to being located on only one surface of the sound absorbing panel. Alternatively, some long groove regions 13a may be located on one surface of the sound absorbing panel, while other long groove regions 13a may be located on the other surface of the sound absorbing panel.

[0077] The length of the long groove area 13a along the first direction X determines the maximum adjustable size of the sound absorbing board. 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 not folded. Figure 1 In the embodiment of the arrangement, the adjustable size of the sound absorbing plate is approximately half of the length L of the sound absorbing plate 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 greater than or equal to one half of the length L of the sound absorbing plate when it is not folded, the adjustment can be basically achieved. Figure 1 The illustrated embodiments have a similar range of length adjustment.

[0078] It is understood that to ensure that the sound-absorbing panel can be folded and not easily broken, it is preferably made of a flexible porous material with good sound absorption and fracture resistance. If a 9 mm thick panel does not break after being folded at least 100 times, it can be considered to be made of a flexible material. Optionally, the sound-absorbing panel can be made of melamine 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 Figure 11 As shown, Figure 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 understood that the solution described in Example 1 adjusts the size of the sound-absorbing panel by folding along the elongated groove 10, thereby conveniently adjusting the size of the sound-absorbing panel to the actual wall size. However, the minimum adjustable width is limited, generally no less than the width of one solid portion 12. This embodiment aims to enable the size of the sound-absorbing panel to be adjusted on a smaller scale.

[0082] In some embodiments, as Figure 12 As shown, the sound absorbing panel includes a plurality of first slit groups 30 spaced apart along a first direction X. Each first slit group 30 includes a plurality of first slits 31 spaced apart along a second direction Y. The first slits 31 extend through both surfaces of the panel in the thickness direction Z. The arrangement of the first slit groups 30 ensures that when the panel is stretched along the first direction X, the gaps in the first slits 31 widen and deform, allowing the panel to be more easily extended along the first direction X, allowing fine-tuning of its dimensions in the first direction X. This allows the panel to be stretched to match the wall dimensions when the wall dimensions are relatively small, making installation more convenient and allowing the panel to be easily covered to the entire wall, resulting in a more aesthetically pleasing finish.

[0083] In some embodiments, at least some of the outermost first slits 31 of the first slit group 30 are in communication with the outer side surface 1c of the sound absorbing board. In this way, 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 first direction X, thereby causing the sound absorbing board to deform. Further, optionally, in two adjacent first slit groups 30, the outermost first slit 31 of at least one of the first slit groups 30 is in communication with the outer side surface 1c of the sound absorbing board. For example, Figures 12 to 14 In the embodiment shown, the outermost first slit 31 of one of the two adjacent first slit groups 30 is connected to the outer side 1c of the sound absorbing board, while the other one is not connected. In this way, the sound absorbing board can be easily stretched and deformed while still maintaining a certain structural strength. Figure 15 In the illustrated embodiment, the outermost first slits 31 of all first slit groups 30 communicate with the outer side surface 1c of the sound absorbing panel, making the panel more susceptible to stretching and deformation. It is understood that there may be two outermost first slits 31 in the first slit group 30. One of the first slits 31 may communicate with the outer side surface 1c of the sound absorbing panel, while the other may not. Alternatively, both outermost first slits 31 may communicate with the outer side surface 1c of the sound absorbing panel, allowing for more uniform deformation of the panel.

[0084] Optionally, the plurality of first slits 31 of the first slit group 30 are located on the same straight line. In this way, 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 The two adjacent first slits 31 in the first direction X are staggered in the second direction Y, so that the sound absorbing panel 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 significant impact on the difficulty and elongation of the sound absorbing panel.

[0087] In some embodiments, reference Figure 14 The spacing D1 between two adjacent first slits 31 of the first slit group 30 along the second direction Y is 5 to 100 mm. This spacing D1 is neither too large, which would result in insufficient deformation of the sound-absorbing panel, nor too close, which would result in insufficient strength and easy tearing of the sound-absorbing panel. It is understood that the distance between two adjacent first slits 31 can be the same (i.e., the first slits 31 of the first slit group 30 are equidistant) or different (i.e., the first slits 31 of the first slit group 30 are unequally spaced).

[0088] For the sake of convenience, the slits connected to the outer side 1c of the sound absorbing plate are called outer slits, and the slits not connected to the outer side 1c of the sound absorbing plate are called inner slits. Figure 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 an appropriate length, ensuring the structural strength of the sound-absorbing panel while ensuring a good deformation of the sound-absorbing panel after stretching. It is understood that the lengths of all the inner slits can be the same, or at least two of the inner slits can have different lengths.

[0089] In some embodiments, reference Figure 14 The spacing D2 between two adjacent first slit groups 30 along the first direction X is 3 to 300 mm. This creates a more appropriate spacing between two adjacent first slit groups 30. On the one hand, the distance between two adjacent first slits 31 is not too small, which helps ensure the overall structural strength of the sound-absorbing panel and prevents adjacent slits from contacting during processing and thus cutting the sound-absorbing panel. On the other hand, the spacing between two adjacent first slits 31 is not too large, which could result in small or uneven deformation of the sound-absorbing panel. It is understood that the distance between two adjacent first slit groups 30 can be the same (i.e., the first slit groups 30 are equidistantly spaced) or different (i.e., the first slit groups 30 are unequally spaced).

[0090] It is understandable that when the slit groups are arranged along the first direction X, the sound absorbing panel is more suitable for stretching and deforming along the first direction X. In order to enable the sound absorbing panel to be able to adjust its size in more directions to adapt to walls of different sizes, in some embodiments, reference is made to Figure 16 and Figure 17 The sound absorbing panel 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. The second slits 33 extend through both surfaces of the sound absorbing panel in the thickness direction Z. This allows the panel to be adjusted in size along both the first direction X and the second direction Y, adapting to a wider range of situations requiring size adjustment.

[0091] The structure and parameters of the second slit group 32 may refer to the above description of the first slit group 30 , as exemplified below.

[0092] In some embodiments, at least some of the outermost second slits 33 of the second slit group 32 are in communication with the outer side surface 1c of the sound absorbing panel. In this way, the outer edge of the sound absorbing panel does not act as a frame, making it easier for the sound absorbing panel to stretch along the second direction Y, thereby deforming the sound absorbing panel. Further, optionally, among two adjacent second slit groups 32, at least one of the outermost second slits 33 of the second slit group 32 is in communication with the outer side surface 1c of the sound absorbing panel. For example, Figure 16 and Figure 17 In the illustrated embodiment, the outermost second slit 33 of one of two adjacent second slit groups 32 communicates with the outer side surface 1c of the sound absorbing panel, while the other does not. This allows the sound absorbing panel to be easily deformed by stretching while maintaining a certain structural strength. Alternatively, the outermost second slits 33 of all second slit groups 32 can be connected to the outer side surface 1c of the sound absorbing panel, making the panel more susceptible to stretching and deformation. It is understood that if there are two outermost second slits 33 in a second slit group 32, one of the second slits 33 can communicate with the outer side surface 1c of the sound absorbing panel while the other does not, or both outermost second slits 33 can communicate with the outer side surface 1c of the sound absorbing panel, allowing the sound absorbing panel to deform more evenly.

[0093] Optionally, the plurality of second slits 33 of the second slit group 32 are located on the same straight line. In this way, 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 Figure 16 and Figure 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 panel can reliably deform along the second direction Y and has good structural strength.

[0095] In some embodiments, the outermost second slit 33 (i.e., outer slit) of the second slit group 32 is connected to the outer side surface 1c of the sound absorbing board. In this way, 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 is understandable 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 significant impact on the elongation of the sound absorbing panel.

[0097] In some embodiments, reference Figure 17 The spacing D3 between two adjacent second slits 33 in the second slit group 32 along the first direction X is 5 to 100 mm. This ensures that the spacing between two adjacent second slits 33 is neither too large, resulting in insufficient deformation of the sound-absorbing panel, nor too close, resulting in insufficient strength and easy tearing of the sound-absorbing panel. It is understood that the distance between two adjacent second slits 33 can be the same (i.e., the second slits 33 in the second slit group 32 are equidistant) or different (i.e., the second slits 33 in the second slit group 32 are unequally spaced).

[0098] In some embodiments, reference Figure 17The length L3 of the second slits 33 is 10 to 60 mm, ensuring that the second slits 33 have an appropriate length, ensuring the structural strength of the sound-absorbing panel while ensuring a good deformation capacity after stretching. It is understood that all second slits 33 can have the same length, or at least two second slits 33 can have different lengths.

[0099] In some embodiments, reference Figure 17 The spacing D4 between two adjacent second slit groups 32 along the second direction Y is 3 to 300 mm. This creates a more appropriate spacing between two adjacent second slit groups 32. On the one hand, the distance between two adjacent second slit groups 33 is not too small, which helps ensure the overall structural strength of the sound-absorbing panel and prevents adjacent slits from contacting during processing and thus cutting the sound-absorbing panel. On the other hand, the spacing between two adjacent second slit groups 33 is not too large, which could result in small or uneven deformation of the sound-absorbing panel. It is understood that the distance between two adjacent second slit groups 32 can be the same (i.e., the second slit groups 32 are equidistantly spaced) or different (i.e., the second slit groups 32 are unequally spaced).

[0100] Optionally, the surface of the sound-absorbing board is covered with fluff, which can be of the material itself (for example, PET board itself has fluff), or can 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 cover of the fluff, which is more beautiful.

[0101] By providing the sound absorbing panel with spaced slit groups in both the first direction X and the second direction Y, the dimensions of the sound absorbing panel in the first direction X and the second direction Y can be adjusted. When the length and / or width of the sound absorbing panel is slightly smaller than the wall surface, the sound absorbing panel can be stretched to adapt its length and / or width to the dimensions of the wall surface, thereby more fully covering the wall surface and ensuring both aesthetics and sound absorption.

[0102] In some embodiments, multiple first slit groups 30 are distributed throughout the entire sound absorbing panel along the first direction X. This maximizes the adjustable size range of the sound absorbing panel. In other embodiments, the sound absorbing panel is provided with at least one first slit area 34, and the first slit groups 30 are provided in the first slit area 34. This allows the stretchable size range of the sound absorbing panel to be adjusted by adjusting the size of the first slit area 34 in the first direction X, thereby minimizing damage to the sound absorbing panel and ensuring aesthetics. Figure 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, multiple second slit groups 32 are distributed throughout the entire sound absorbing panel along the second direction Y, thereby maximizing the adjustable size range of the sound absorbing panel. In other embodiments, the sound absorbing panel is provided with at least one second slit area 35, and the second slit groups 32 are provided in the second slit area 35. In this way, the stretchable size range of the sound absorbing panel can be adjusted by adjusting the size of the second slit area 35 in the second direction Y, thereby minimizing damage to the sound absorbing panel and ensuring aesthetics. Figure 18 The figure shows a case where one second slit area 35 is provided. 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, Figure 19 In the case shown, the sound absorbing plate is tilted for some reason, so the sound absorbing plate is trapezoidal. In this case, the upper left corner can be stretched to deform it into a rectangle ( Figure 18 By stretching different parts of the sound-absorbing panel, the shape of the sound-absorbing panel can be adjusted more flexibly according to the usage scenario, making it more convenient to use.

[0105] Example 3

[0106] It is understandable that Example 1 and Example 2 can be combined to allow the sound-absorbing panel to be adjusted in size within a larger size range by folding, or to be adjusted in size within a smaller size range by stretching, and the adjustment method is more flexible.

[0107] In some embodiments, as Figure 20 As shown, the sound absorbing panel includes a plurality of long grooves spaced apart along a first direction X, and also includes a plurality of first slit groups 30 spaced apart along the first direction X. This allows for coarse and fine adjustment of the size of the sound absorbing panel in the first direction X. In one possible scenario, the length of the sound absorbing panel is shorter than the length of the wall. In this case, the sound absorbing panel is first folded to be slightly shorter than the length of the wall, and then stretched to align the length of the panel with the length of the wall, thereby reliably covering the entire wall.

[0108] In some embodiments, the sound absorbing panel includes a plurality of elongated slots 10 spaced apart along a first direction X, and a plurality of second slit groups 32 spaced apart along a second direction Y. This allows for coarse adjustment of the panel's dimensions in the first direction X by folding, and fine adjustment of the panel's dimensions in the second direction Y by stretching. In one possible scenario, the panel's length is shorter than the length of the wall, and its width is slightly shorter than the width of the wall. In this case, the panel is first folded to align its length with the wall's length, and then stretched along the second direction Y to align its width with the wall's width, thereby adapting the panel's length and width to the wall's surface.

[0109] In some embodiments, the sound absorbing panel includes a plurality of elongated grooves 10 spaced apart along a first direction X, a plurality of first slit groups 30 spaced apart along the first direction X, and a plurality of second slit groups 32 spaced apart along a second direction Y. This allows for coarse adjustment of the panel's dimensions in the first direction X by folding, and fine adjustment of the panel's dimensions in the first and second directions X and Y by stretching. In one possible scenario, the panel's length is shorter than the length of the wall and its width is slightly shorter than the wall's width. In this case, the panel is first folded to a length slightly shorter than the wall's length, and then stretched along the first and second directions X and Y to align the panel's length and width with the wall's, thereby allowing the panel to completely cover the entire wall.

[0110] Since there is no need to cut the sound absorbing panels, the steps of adjusting the size of the sound absorbing panels are simplified, the operation is more convenient, and large size errors caused by manual cutting are prevented, thereby ensuring dimensional accuracy.

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

Claims

1. A sound-absorbing panel, characterized in that: One or both of the two surfaces of the sound absorbing plate 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 the outer side surface (1c) of the sound absorbing plate, 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 plate.

2. The sound absorbing panel according to claim 1, wherein 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.

3. The sound absorbing panel according to claim 1, wherein The cross-section of the long groove (10) is in the shape of a triangle or a trapezoid; 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, wherein 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, wherein: 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, wherein 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, wherein 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, wherein 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, wherein 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, wherein 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, wherein 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) includes at least one first long groove area (13a), 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, wherein 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, wherein 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 both 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 on 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) pass through the two surfaces of the sound absorbing plate in the thickness direction Z.

15. The sound absorbing panel according to claim 14, wherein 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, wherein 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 provided in the first slit area (34).

17. The sound absorbing panel according to claim 14, wherein 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 provided in the second slit area (35).

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