Sound insulation plywood

Abstract

The utility model aims to provide a soundproof plywood, which comprises an inner layer frame, two surface blocks and a plurality of core plates, the inner layer frame is provided with a plurality of inner holes, the two surface blocks are respectively adhered to two opposite side surfaces of the inner layer frame, so that a plurality of inner cavities are respectively formed by the two surface blocks and the inner holes, and the core plates are arranged in the inner cavities in a one-to-one correspondence manner. And the two side surfaces of each core plate are respectively bonded with the two surface blocks. Thus, the whole plywood body is supported by the inner layer frame, the overall structural strength of the formed plywood is effectively ensured, and warping of local positions is avoided; the inner layer frame is filled with the multiple core plates at intervals, sound waves are reflected and absorbed through the core plates, and therefore the sound insulation plywood has the good sound insulation effect.

Description

Technical Field

[0001] This utility model relates to the technical field of plywood, and in particular to a sound-insulating plywood. Background Technology

[0002] Plywood, a common composite board material, is typically made by bonding multiple layers of wood veneers together with adhesives. While its interlocking grain structure improves mechanical properties, it has significant shortcomings in sound insulation and noise reduction. Due to the low acoustic impedance of wood itself and the lack of effective acoustic optimization design in traditional plywood structures, its ability to block airborne sound (such as human voices and traffic noise) and structural sound (such as vibration transmission) is insufficient, making it difficult to meet the increasingly stringent sound insulation requirements of modern buildings, transportation vehicles, and other fields.

[0003] In existing technologies, to improve the sound insulation of plywood, an additional sound insulation layer is typically added, such as by incorporating sound-absorbing materials like mineral wool or foam into the plywood layers. However, after a certain period of use, the sound-absorbing material layer is prone to expansion due to moisture, which not only reduces the sound insulation effect but can also cause the plywood to deform, warp, and have poor durability. Therefore, to address these shortcomings, the sound-insulating plywood of this application is proposed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a soundproof plywood with stable structure and effective sound insulation effect.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A sound-insulating plywood, comprising:

[0007] An inner shelf, wherein the inner shelf has a plurality of internal holes;

[0008] Two surface blocks are respectively bonded to opposite sides of the inner frame, so that the two surface blocks and the inner hole respectively form several inner cavities; and

[0009] A plurality of core boards are disposed in each of the inner cavities in a corresponding manner, and each core board is bonded to two surface blocks on both sides.

[0010] Optionally, the inner shelf includes a plurality of horizontal bars and a plurality of vertical bars, wherein each of the horizontal bars and each of the vertical bars are sequentially staggered to form the inner shelf, and an inner hole is formed between any two adjacent horizontal bars and two adjacent vertical bars.

[0011] Optionally, the horizontal bar is provided with a plurality of first grooves spaced apart, and the vertical bar is provided with a plurality of second grooves spaced apart, each of the first grooves being engaged with a second groove.

[0012] Optionally, the thickness of the horizontal bar is the same as the thickness of the vertical bar, the depth of the first groove is the same as the depth of the second groove, and the sum of the depths of the first groove and the second groove is equal to the thickness of the horizontal bar / the vertical bar.

[0013] Optionally, the inner wall of the first groove is bonded to the inner wall of the second groove.

[0014] Optionally, a first through hole is provided on the inner bottom wall of the first groove, and a second through hole is provided on the inner side wall of the second groove, and the second through hole communicates with the first through hole, and a pin is inserted through the first through hole and the second through hole.

[0015] Optionally, the horizontal bar, the vertical bar, and the pin are all made of wood.

[0016] Optionally, the core board has a plurality of honeycomb holes.

[0017] Optionally, the core board is made of cork oak bark.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] This invention discloses a sound-insulating plywood comprising an inner frame, two face blocks, and several core boards. The inner frame has several internal holes. The two face blocks are respectively bonded to opposite sides of the inner frame, forming several cavities with the face blocks and the internal holes. Each core board is correspondingly disposed within its respective cavity, and both sides of each core board are bonded to the two face blocks. Thus, the inner frame provides support for the entire board, effectively ensuring the overall structural strength of the plywood and preventing warping in localized areas. Furthermore, the inner frame is filled with multiple core boards at intervals, utilizing the core boards to reflect and absorb sound waves, resulting in excellent sound insulation performance for the sound-insulating plywood of this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of a sound-insulating plywood according to one embodiment of the present invention;

[0022] Figure 2 for Figure 1 The diagram shows the exploded structure of the sound-insulating plywood.

[0023] Figure 3 This is a partial structural diagram of the inner frame according to one embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Soundproof plywood; 100. Inner frame; 200. Surface panel; 300. Core board; 110. Inner hole; 120. Horizontal bar; 130. Vertical bar; 121. First groove; 131. Second groove; 122. First through hole; 132. Second through hole; 140. Pin. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0027] like Figure 1 and Figure 2 As shown, a sound-insulating plywood 10 includes an inner frame 100, two face blocks 200, and several core boards 300. The inner frame 100 has several inner holes 110. The two face blocks 200 are respectively bonded to the opposite sides of the inner frame 100 so that the two face blocks 200 and the inner holes 110 respectively form several inner cavities. Each core board 300 is correspondingly disposed in each inner cavity, and both sides of each core board 300 are respectively bonded to the two face blocks 200.

[0028] It should be noted that a panel 200 is provided on each side of the inner frame 100, and multiple internal holes 110 are formed within the inner frame 100. Each core board 300 is installed within its respective internal hole 110. It is important to note that the inner frame 100, each core board 300, and the panel 200 are all bonded together with adhesive and then pressed into a plate-like structure using a lamination process. In this way, the inner frame 100 provides support for the entire board, effectively ensuring the overall structural strength of the plywood and preventing warping in localized areas. Furthermore, multiple core boards 300 are spaced apart within the inner frame 100, and the core boards 300 reflect and absorb sound waves, giving the sound-insulating plywood 10 of this application a good sound insulation effect.

[0029] like Figures 1 to 3 As shown, in one embodiment, the inner shelf 100 includes a plurality of horizontal bars 120 and a plurality of vertical bars 130. Each horizontal bar 120 and each vertical bar 130 are sequentially and alternately connected to form the inner shelf 100. An inner hole 110 is formed between any two adjacent horizontal bars 120 and two vertical bars 130.

[0030] It should be noted that the inner frame 100 is formed by rows and columns of long, narrow horizontal bars 120 and vertical bars 130. The lengths of the horizontal bars 120 and vertical bars 130 may or may not be the same. Furthermore, the specific lengths of the horizontal bars 120 and vertical bars 130 can be selected based on the required length and width of the final plywood, facilitating the production of standard-length and wide plywood, which can then be cut by the user as needed.

[0031] like Figure 3 As shown, in one embodiment, a plurality of first grooves 121 are spaced apart on the horizontal bar 120, and a plurality of second grooves 131 are spaced apart on the vertical bar 130, with each first groove 121 engaging with a second groove 131.

[0032] It should be noted that when the first groove 121 and the second groove 131 are engaged, the horizontal bar 120 and the vertical bar 130 are locked together, preventing the horizontal bar 120 and the vertical bar 130 from rotating relative to each other. Furthermore, in one embodiment, the inner wall of the first groove 121 is bonded to the inner wall of the second groove 131. Thus, after being fixed by adhesive, the interlocking action of the first groove 121 and the second groove 131 effectively improves the structural strength of the formed inner frame 100. Furthermore, in one embodiment, the dimensions of the first groove 121 and the second groove 131 are identical.

[0033] In one embodiment, the thickness of the horizontal bar 120 is the same as the thickness of the vertical bar 130, the depth of the first groove 121 is the same as the depth of the second groove 131, and the sum of the depths of the first groove 121 and the second groove 131 is equal to the thickness of the horizontal bar 120 / the vertical bar 130.

[0034] It should be noted that this embodiment employs a scheme to ensure that the inner frame 100 formed by the horizontal strips 120 and the vertical strips 130 maintains a consistent thickness. Specifically, by interlocking and fixing the first groove 121 on the horizontal strip 120 with the second groove 131 on the vertical strip 130, the opposing sides of the horizontal strip 120 and the opposing sides of the vertical strip 130 remain flush. This allows the two face pieces 200 to be stably bonded and fixed to the sides of each horizontal strip 120 and each vertical strip 130. Consequently, the interior of the formed sound-insulating plywood 10 is completely filled, preventing hollow structures and effectively improving the structural strength of the sound-insulating plywood 10.

[0035] like Figure 3 As shown, in one embodiment, a first through hole 122 is provided on the inner bottom wall of the first groove 121, and a second through hole 132 is provided on the inner side wall of the second groove 131. The second through hole 132 communicates with the first through hole 122, and a pin 140 passes through the first through hole 122 and the second through hole 132.

[0036] It should be noted that, in order to further enhance the structural strength between the horizontal bar 120 and the vertical bar 130, a first through hole 122 is formed in the first groove 121, and a second through hole 132 is formed in the second groove 131. Thus, when the first groove 121 and the second groove 131 are engaged, the first through hole 122 and the second through hole 132 are connected. Then, a pin 140 is inserted into the first through hole 122 and the second through hole 132. The pin 140 is interference-fitted to both the first through hole 122 and the second through hole 132. Further, in one embodiment, the pin 140 is bonded and fixed to the inner walls of both the first through hole 122 and the second through hole 132 using adhesive. In this way, the inner frame 100 formed has sufficient structural strength. After the core board 300 is installed in the inner hole 110, and then the two face pieces 200 are glued and fixed to the two sides of the inner frame 100, it is fixed by heating and lamination, so that the sound insulation plywood 10 forms a dense multi-layer structure with high structural strength and good sound insulation performance.

[0037] In one embodiment, the horizontal bars 120, the vertical bars 130, and the pins 140 are all made of wood. For example, the horizontal bars 120, the vertical bars 130, and the pins 140 are all solid wood structures, thus ensuring that the formed inner shelf 100 has sufficient structural strength.

[0038] In one embodiment, the core board 300 has a plurality of honeycomb holes. It should be noted that by forming a plurality of independent honeycomb holes inside the core board 300, the transmission of sound waves in the core board 300 can be effectively blocked, thereby achieving the purpose of sound insulation.

[0039] Furthermore, in one embodiment, the core board 300 is made of cork oak bark. It should be noted that cork oak is a deciduous tree belonging to the genus *Quercus* of the family Fagaceae. Its bark is filled with closed, honeycomb-like micro-air sacs, giving it lightweight, elasticity, and compressibility. Moreover, cork oak bark is a renewable and environmentally friendly material, making its installation within plywood even more environmentally friendly. Specifically, the cork oak bark is collected, shredded, and then mixed with adhesive and molded into a rectangular core board 300.

[0040] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood to include, but is not limited to, locking and fixing with screws / bolts, and welding. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A sound-insulating plywood, characterized in that, include: An inner shelf, wherein the inner shelf has a plurality of internal holes; Two surface blocks are respectively bonded to opposite sides of the inner frame, so that the two surface blocks and the inner hole respectively form several inner cavities; and A plurality of core boards are disposed in each of the inner cavities in a corresponding manner, and each core board is bonded to two surface blocks on both sides.

2. The sound-insulating plywood according to claim 1, characterized in that, The inner frame includes several horizontal bars and several vertical bars, and the horizontal bars and vertical bars are connected in an alternating manner to form the inner frame. An inner hole is formed between any two adjacent horizontal bars and two adjacent vertical bars.

3. The sound-insulating plywood according to claim 2, characterized in that, The horizontal bar is provided with a plurality of first grooves spaced apart, and the vertical bar is provided with a plurality of second grooves spaced apart, each of the first grooves being engaged with a second groove.

4. The sound-insulating plywood according to claim 3, characterized in that, The thickness of the horizontal bar is the same as the thickness of the vertical bar, the depth of the first groove is the same as the depth of the second groove, and the sum of the depths of the first groove and the second groove is equal to the thickness of the horizontal bar / the thickness of the vertical bar.

5. The sound-insulating plywood according to claim 3, characterized in that, The inner wall of the first groove is bonded to the inner wall of the second groove.

6. The sound-insulating plywood according to claim 3, characterized in that, A first through hole is provided on the inner bottom wall of the first groove, and a second through hole is provided on the inner side wall of the second groove. The second through hole communicates with the first through hole, and a pin is inserted through the first through hole and the second through hole.

7. The sound-insulating plywood according to claim 6, characterized in that, The horizontal bars, the vertical bars, and the pins are all made of wood.

8. The sound-insulating plywood according to claim 1, characterized in that, The core board has several honeycomb holes.

9. The sound-insulating plywood according to claim 8, characterized in that, The core board is made of cork oak bark.

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