Pluggled musical instrument with lattice-shaped structure filled in instrument body

Abstract

The utility model provides a plucked musical instrument with a lattice-shaped structure filled in a musical instrument body, which is used for solving the problem of how to maintain and further improve the acoustic quality of the musical instrument while effectively reducing the weight of the musical instrument in the prior art. A hollow part on a guitar body is filled with a lattice-shaped structure; on the premise of reducing the weight of the guitar body, the plurality of small cavities formed in the lattice-shaped structure enable the guitar body to generate dispersed resonance peak values and mutually compensate frequency responses, so that the excessive protrusion phenomenon of a certain frequency band is reduced, and the acoustic balanced output is enhanced, thereby ensuring the smooth transition of high, medium and low frequencies and the balance of the whole timbre; and the lattice structure can uniformly share vibration and stress in the normal direction and the direction perpendicular to the normal direction, and can also realize multidirectional damping through node internal friction, that is, lattice filling adds internal support while removing part of wood, so that the bending resistance and the pressure resistance of the guitar body are enhanced, and the mechanical distribution of each part of the guitar body is balanced.

Description

A plucked string instrument whose body is filled with a lattice-like structure Technical Field

[0001] This utility model belongs to the field of plucked string instruments, and in particular relates to a plucked string instrument in which the body is filled with a lattice-like structure. Background Technology

[0002] Plucked string instruments (such as electric guitars, electric basses, and acoustic guitars) are a class of instruments that produce sound by vibrating strings using fingers, picks, or other tools, and they occupy an important place in global music culture. These instruments are renowned for their rich tonal expressiveness and diverse playing techniques; however, in actual performance, the weight of the instrument often places a significant physical burden on the player. During prolonged performances, an excessively heavy instrument can not only lead to muscle fatigue but may also affect the accuracy of the playing and the musicality of the performance.

[0003] Traditionally, to reduce the weight of plucked string instruments, manufacturers have often removed some wood from the body. However, this weight-reduction method has significant technical drawbacks: firstly, excessive removal of wood reduces the structural rigidity of the instrument; secondly, it alters the acoustic characteristics of the resonating chamber, making resonance suppression difficult; and most importantly, this treatment often disrupts the instrument's acoustic balance, resulting in an overly prominent low-frequency response and significant high-frequency attenuation, ultimately affecting the overall sound quality of the instrument.

[0004] To address this issue, existing technologies have proposed several improvement solutions. For example, Chinese patent CN107430844B discloses an innovative electric guitar design. This design attempts to reduce weight while maintaining the integrity of the guitar's main structure and minimizing any adverse effects on sound quality by creating one or more hollowed-out areas within the guitar body and filling these spaces with a honeycomb material.

[0005] However, how to effectively reduce the weight of musical instruments while not only maintaining but also further improving their acoustic quality remains a technical challenge that urgently needs to be solved in the field of musical instrument manufacturing. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a plucked string instrument with a lattice structure filled in the body, in order to solve the problem in the prior art of how to effectively reduce the weight of the instrument while not only maintaining but also further improving the acoustic quality of the instrument.

[0007] To achieve the above and other related objectives, this utility model provides a plucked string instrument with a lattice structure filled inside the instrument body, comprising: a main body with a hollowed-out portion; and a lattice structure for filling the hollowed-out portion.

[0008] Optionally, a cover plate is also included, which is connected to the main body of the instrument and is used to confine the lattice structure within the hollowed-out portion.

[0009] Optionally, the hollowed-out portion may be located in the middle of the main body of the instrument or extend along both sides of the bridge.

[0010] Optionally, the lattice structure is peripherally closed.

[0011] Optionally, the lattice structure is made of high-strength and / or high-modulus materials.

[0012] Optionally, the lattice structure can be made of plastic, carbon fiber, or resin-based composite materials.

[0013] Optionally, a damping layer may be provided on the lattice nodes of the lattice structure or the sidewalls of the cavity.

[0014] Optionally, vibration-absorbing adhesive may be provided on the lattice nodes of the lattice structure or the sidewalls of the cavity.

[0015] Optionally, the lattice structure can be detachably connected to the cover plate or the main body of the instrument.

[0016] Optionally, the lattice structure is fixedly connected to the cover plate or the main body of the instrument.

[0017] As described above, the plucked string instrument of this invention, whose body is filled with a lattice-like structure, has at least the following beneficial effects by using a lattice-like structure to fill the hollowed-out parts of the instrument body:

[0018] 1. Improved Tonal Balance: The multiple small cavities formed within the lattice structure generate dispersed resonance peaks in the instrument body, which compensate for each other's frequency response, reduce the excessive prominence of a certain frequency band, and enhance acoustic balance output, thereby ensuring a smooth transition between high, mid, and low frequencies and overall tonal balance.

[0019] 2. Enhanced Low-Frequency Control: Lattice filling increases the internal stiffness of the instrument body, suppressing the low-frequency "bulging" effect in the cavity and preventing muddy sounds in low frequencies. The lattice rods dampen and support low-frequency vibrations, making the low frequencies more compact and powerful, and improving clarity.

[0020] 3. High-frequency extension optimization: Due to the open vibration channel and multi-point support formed by the lattice structure, the high-frequency vibration energy can be continued and evenly distributed compared with the traditional solid structure, reducing the high-frequency attenuation problem caused by the large cavity, making the sound quality clear and transparent.

[0021] 4. Improved Structural Strength: The lattice structure can evenly distribute vibration and stress in both the normal and perpendicular directions, and can also achieve multi-directional damping through nodal internal friction. In other words, lattice filling adds internal support while removing some wood, enhancing the instrument's resistance to bending and compression, and balancing the mechanical distribution across the instrument. This significantly improves the instrument's deformation and fatigue strength, extends its service life, and reduces the risk of deformation caused by environmental or tension changes.

[0022] 5. Customizability and Flexibility: The geometry, unit size, materials, and layout of the lattice structure can all be adjusted as needed, making it suitable for different types of guitar bodies and different acoustic goals. For example, different lattice templates or damping materials can be selected to optimize the sound for electric guitars that require prominent mid-to-high frequencies or acoustic guitars that require warm low frequencies. This flexibility is difficult to achieve in traditional solid or single-hole designs, significantly improving the controllability of instrument design. Attached Figure Description

[0023] Figure 1 shows an exploded structural diagram of a plucked string instrument whose body is filled with a lattice-like structure according to the present invention.

[0024] Figure 2 shows a partial structural diagram of a plucked string instrument of the present invention, in which the body is filled with a lattice-like structure.

[0025] Figure 3 shows a schematic diagram of the assembly of the main body and the lattice structure of a plucked string instrument of the present invention, in which the instrument body is filled with a lattice structure.

[0026] Figure 4 shows a schematic diagram of a portion of the structure taken from the interior of the lattice structure, used to illustrate the internal shape of the lattice structure.

[0027] Component designation explanation:

[0028] 1. Main body of the instrument; 2. Lattice structure; 21. Lattice rods; 22. Nodes; 3. Cover plate; 4. Hollowed-out part. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0030] Please refer to all the accompanying drawings below. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0031] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0032] Through in-depth research on CN107430844B, it was found that the honeycomb material used in this patent is a two-dimensional periodic core material, mainly providing stiffness and damping in the thickness direction and primarily providing channels for vibration transmission. However, it lacks tunable resonant units, resulting in an inability to improve the sound quality of the instrument. Furthermore, the honeycomb material is a layered structure, and its stiffness and strength are manifested in the compressive and bending resistance in the normal (thickness direction) of the instrument body, but its contribution to impact or bending perpendicular to the normal direction is relatively small, thus also preventing improvements in the sound quality of plucked instruments.

[0033] Referring to Figures 1-4, this invention provides a plucked string instrument with a lattice-like structure 2 filling its body. The plucked string instrument can be an electric guitar, electric bass, acoustic guitar, or violin, etc. The main body 1 of the instrument can be made of solid wood. The hollowed-out portion 4 is a circular, square, or other irregular blind-hole structure formed by removing part of the wood through machining, drilling, or other processing methods. The hollowed-out portion 4 can be located in the middle of the main body, near the edge, or extending along both sides of the bridge to maximize weight reduction of the main body.

[0034] A lattice-like structure 2 is used to fill the hollow portion 4. A lattice is a spatial framework formed by the arrangement of atoms, ions, or molecules in a crystal according to certain geometric rules. In this application, the lattice-like structure 2 is a high-strength and / or high-modulus material, such as plastic, carbon fiber, or resin-based composite material, formed by 3D printing or other methods, similar to a spatial framework formed by combining multiple lattice rods 21 within a lattice. It is understood that there can be multiple hollow portions 4, and correspondingly, there are also multiple lattice-like structures 2, with each lattice-like structure 2 corresponding to a hollow portion 4.

[0035] Cover plate 3 is connected to the main body 1 of the instrument and is used to confine the lattice structure 2 within the hollowed-out portion 4. Cover plate 3 can be a plate-shaped structure with the same shape as the main body 1 of the instrument but with a different thickness. It can be connected to the main body 1 of the instrument by detachable connection methods such as bolts or snap-fits or by non-detachable (fixed connection) methods such as adhesives, in order to confine the lattice structure 2 within the hollowed-out portion 4 and prevent the lattice structure 2 from detaching from the hollowed-out portion 4.

[0036] To facilitate the fixing of the lattice structure 2 within the hollowed-out portion 4, the periphery of the lattice structure 2 is closed, meaning its periphery is continuous and a closed structure such as a plate without holes, thereby increasing the contact area between the lattice structure 2 and the hollowed-out portion 4. Furthermore, the upper and lower sides of the lattice structure 2 are not closed, so that the vibrations generated by the strings can be effectively transmitted to the lattice structure 2 when used with plucked musical instruments.

[0037] To improve the damping characteristics of the lattice structure 2, a damping layer can be coated on each connecting node 22 of the lattice structure 2 or on the sidewalls forming the internal cavity (the outer sidewalls of the lattice rods 21). The damping layer can be a layered structure formed by coating each connecting node 22 or the sidewalls of the internal cavity with vibration-absorbing adhesive. The vibration-absorbing adhesive converts vibration energy into heat energy or other forms of energy through its internal viscoelastic material, thereby reducing the transmission of vibration.

[0038] This embodiment uses a lattice structure 2 to fill the hollowed-out portion 4 on the main body of the instrument, which has at least the following beneficial effects:

[0039] Enhanced tonal balance: The multiple small cavities formed within the lattice structure 2 generate dispersed resonance peaks in the instrument body, which compensate for each other's frequency response, reduce the excessive prominence of a certain frequency band, and enhance acoustic balance output, thereby ensuring a smooth transition between high, mid, and low frequencies and overall tonal balance.

[0040] Enhanced low-frequency control: Lattice filling increases the internal stiffness of the instrument body, suppressing the low-frequency "bulging" effect in the cavity and preventing muddy sounds in low frequencies. Lattice rods 21 dampen and support low-frequency vibrations, making the low frequencies more compact and powerful, and improving clarity.

[0041] High-frequency extension optimization: Due to the open vibration channel and multi-point support formed by the lattice structure 2, the high-frequency vibration energy can be continued and evenly distributed compared with the traditional solid structure, reducing the high-frequency attenuation problem caused by the large cavity, making the sound quality clear and transparent.

[0042] Improved structural strength: The lattice structure 2 can evenly distribute vibration and stress in both the normal and perpendicular directions, and can also achieve multi-directional damping through the internal friction of nodes 22. In other words, the lattice filling adds internal support while removing some wood, enhancing the bending and compressive strength of the instrument body and balancing the mechanical distribution of various parts. The deformation and fatigue strength of the instrument body are significantly improved, increasing its service life and reducing the risk of deformation caused by environmental or tension changes.

[0043] Customizability and Flexibility: The geometry, unit size, materials, and layout of the lattice structure 2 can all be adjusted as needed, making it suitable for different types of guitar bodies and different acoustic goals. For example, different lattice templates or damping materials can be selected to optimize for the mid-to-high frequency emphasis of an electric guitar or the low-frequency warmth of an acoustic guitar. This flexibility is difficult to achieve in traditional solid or single-hole designs, significantly improving the controllability of instrument design.

[0044] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0045] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A plucked string instrument with a lattice-like structure filled inside, characterized in that, include: The main body of the instrument has a hollowed-out portion. A lattice-like structure for filling the hollowed-out portion.

2. A plucked string instrument with a lattice-like structure filled inside its body according to claim 1, characterized in that: It also includes a cover plate, which is connected to the main body of the instrument and is used to confine the lattice structure within the hollowed-out portion.

3. A plucked string instrument with a lattice-like structure filled in its body according to any one of claims 1 or 2, characterized in that: The hollowed-out portion is located in the middle of the main body of the instrument or extends along both sides of the bridge.

4. A plucked string instrument with a lattice-like structure filled in its body according to any one of claims 1 or 2, characterized in that: The lattice structure is peripherally closed.

5. A plucked string instrument with a lattice-like structure filled in its body according to any one of claims 1 or 2, characterized in that: The lattice structure is made of plastic, carbon fiber, or resin-based composite materials.

6. A plucked string instrument with a lattice-like structure filled in its body according to any one of claims 1 or 2, characterized in that: A damping layer is provided on the sidewall of the lattice node or cavity of the lattice structure.

7. A plucked string instrument with a lattice-like structure filled in its body according to any one of claims 1 or 2, characterized in that: Vibration-absorbing adhesive is provided on the sidewalls of the lattice nodes or cavities of the lattice structure.

8. A plucked string instrument with a lattice-like structure filled inside its body according to claim 2, characterized in that: The lattice structure is detachably connected to the cover plate or the main body of the instrument.

9. A plucked string instrument with a lattice-like structure filled inside its body according to claim 2, characterized in that: The lattice-like structure is fixedly connected to the cover plate or the main body of the instrument.

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