Composite material piano soundboard
By using a composite piano sound board with integrated molding of carbon fiber composite materials, the deformation or cracking of existing sound boards due to wood size deformation is solved, and the high stiffness and stability of the sound board is achieved, reducing maintenance costs and improving sound effect.
Patent Information
- Application Number
- CN202421727125.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing piano sound boards are easily deformed or cracked due to the deformation of the wood size, which affects the sound effect of the piano and increases the cost of repair or replacement.
The composite piano sound board is formed by carbon fiber composite materials. The main body of the sound board and the sound board ribs are formed by vacuum hot pressing to form an integral laminate board, avoiding the risks of nail joints and glue joints.
The composite piano sound board is not easy to crack or deform, which improves the stiffness and stability of the sound board, reduces maintenance costs, and improves the sound effect of the piano.
Smart Images
Figure CN223038590U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of composite materials, in particular to a composite material piano soundboard. Background Art
[0002] The soundboard in a piano is a key component for sound production. In the prior art, the soundboard is made by splicing several boards. Since wood itself has pores, under humid or dry conditions, there are cases of dimensional deformation, and this deformation will cause the deformation or cracking of the piano soundboard. Such deformation or cracking will seriously affect the sound production effect of the piano, and the cost of repair or replacement is very high, which needs to be improved. Summary of the Utility Model
[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a composite material piano soundboard, which has the effect of not being easily cracked or deformed.
[0004] The above technical purpose of the utility model is achieved through the following technical solutions: A composite material piano soundboard includes a soundboard main body and soundboard ribs. Both the soundboard main body and the soundboard ribs are integrally formed by carbon fiber composite materials. The soundboard ribs are arranged in a long strip shape, and the number is 11 or 12, and are integrally formed and parallelly distributed on the soundboard main body through a vacuum hot pressing process.
[0005] In a preferred example, the utility model can be further configured as: Both the soundboard main body and the soundboard ribs are composed of 6 - 10 layers of carbon fiber fabrics and resins distributed between the fabrics and in the fiber gaps, and the two form an integral laminate through hot pressing.
[0006] In a preferred example, the utility model can be further configured as: The soundboard main body includes a bass area and a treble area, and the thickness of the treble area is 1 - 1.5 mm greater than the thickness of the bass area.
[0007] In a preferred example, the utility model can be further configured as: The shape of the soundboard ribs is high in the middle and low on both sides, and there is an arc transition between the middle and both sides.
[0008] In a preferred example, the utility model can be further configured as: The middle height of the soundboard ribs is 10 - 20 mm, and the height on both sides is 2 - 10 mm.
[0009] In a preferred example, the utility model can be further configured as: The width of the soundboard ribs is 2 - 4 mm.
[0010] In a preferred example, the utility model can be further configured as: The distance between the soundboard ribs is 90 - 140 mm.
[0011] In summary, the utility model has the following beneficial effects:
[0012] 1. The composite material piano soundboard is integrally formed by carbon fiber composite material, and the soundboard ribs are integrally bonded during the forming process of the soundboard body. There is no nail joint or glue joint in the whole soundboard, and there is no risk of cracking or breaking.
[0013] 2. The stiffness of the composite material piano soundboard is greater than that of the traditional wooden piano soundboard, so it has the effect of not being easily cracked or deformed. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic structural diagram of the embodiment;
[0015] Figure 2 is a schematic structural diagram of the soundboard body of the embodiment.
[0016] Reference numerals: 1, soundboard body; 11, bass area; 12, treble area; 2, soundboard ribs. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] The following further describes the present utility model in detail with reference to the drawings.
[0018] As Figure 1 , Figure 2 shown, a composite material piano soundboard includes a soundboard body 1 and soundboard ribs 2. Both the soundboard body 1 and the soundboard ribs 2 are integrally formed by carbon fiber composite material. The soundboard body 1 and the soundboard ribs 2 are both composed of 6 - 10 layers of carbon fiber fabrics and resins distributed between the fabrics and in the fiber gaps, and the two form an integral laminate through hot pressing.
[0019] As Figure 1 , Figure 2 shown, the soundboard ribs 2 are arranged in a long strip shape, and the number is 11 or 12. They are integrally formed through a vacuum hot pressing process and are parallelly distributed on the soundboard body 1, and form an angle of 30 - 50° with the length direction of the soundboard body 1.
[0020] As Figure 1 , Figure 2 shown, the width of the soundboard ribs 2 is 2 - 4 mm, and the distance between the soundboard ribs 2 is 90 - 140 mm. The shape of the soundboard ribs 2 is high in the middle and low on both sides, and there is an arc transition between the middle and both sides. The middle height of the soundboard ribs 2 is 10 - 20 mm, and the height on both sides is 2 - 10 mm.
[0021] The composite material piano soundboard is integrally formed from carbon fiber composite material, and the ribs 2 of the soundboard are also integrally bonded during the forming process of the soundboard body 1. There is no nail joint or glue joint in the whole soundboard, and there is no risk of cracking or breaking. At the same time, the stiffness of the composite material piano soundboard is greater than that of the traditional wooden piano soundboard, so it has the effect of being not easy to crack or deform.
[0022] As Figure 1 , Figure 2 shown, the soundboard body 1 includes a bass area 11 and a treble area 12. The thickness of the treble area 12 is 1-1.5 mm greater than that of the bass area 11, and it is arranged in a transitional state.
[0023] The specific embodiments are only explanations of the present invention, and they are not limitations of the present invention. After reading this specification, those skilled in the art can make modifications without creative contributions to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.
Claims
1. A composite piano soundboard, characterized in that: The invention comprises a soundboard body (1) and soundboard ribs (2), wherein the soundboard body (1) and the soundboard ribs (2) are both integrally formed of carbon fiber composite materials, and the soundboard ribs (2) are arranged in a long strip shape and are 11 or 12 in number, and are integrally formed by a vacuum hot pressing process and are parallelly distributed on the soundboard body (1).
2. A composite piano soundboard according to claim 1, characterized in that: The soundboard body (1) and the soundboard ribs (2) are both composed of 6-10 layers of carbon fiber fabrics and resin distributed between the fabrics and between the fiber gaps, and the two are formed into an integral laminate by hot pressing.
3. The composite piano soundboard according to claim 1, characterized in that: The soundboard body (1) comprises a bass region (11) and a treble region (12), and the thickness of the treble region (12) is 1-1.5 mm greater than the thickness of the bass region (11).
4. The composite piano soundboard according to claim 1, characterized in that: The shape of the sound board rib (2) is that it is high in the middle and low on both sides, and is arranged in an arc transition shape between the middle and the two sides.
5. The composite piano soundboard according to claim 4, characterized in that: The middle height of the soundboard rib (2) is 10-20 mm, and the heights of the two sides are 2-10 mm.
6. The composite piano soundboard according to claim 5, characterized in that: The width of the soundboard rib (2) is 2-4 mm.
7. The composite piano soundboard according to claim 6, characterized in that: The distance between the sound board ribs (2) is 90-140 mm.