Wooden guitar
By improving the design of the X-shaped main soundbar and the carbon fiber strip to strengthen the neck, the problems of bending and deformation of the acoustic guitar neck and insufficient tone have been solved, resulting in greater structural strength and richer tonal effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 李贤哲
- Filing Date
- 2025-01-21
- Publication Date
- 2026-07-21
AI Technical Summary
Existing acoustic guitars suffer from problems such as bending and deformation in the neck and body structure, lack of rich tone, and insufficient resonance, which are particularly noticeable when there are changes in temperature and humidity.
It features an improved X-shaped main soundbar design, a hollowed-out perforated structure, and a carbon fiber strip reinforced neck. Combined with the adjustment of the frame rod and neck rod connection method, it enhances the structural strength of the neck and improves the soundboard vibration efficiency and resonance effect.
It effectively prevents the neck from bending and deforming, improves high-frequency volume and tone, increases the resonance of the body, ensures clear and bright sound quality and tensile strength, and solves the problems of low volume and insufficient sustain at specific frequencies.
Smart Images
Figure CN122435907A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a wooden guitar, and more particularly to a wooden guitar that not only increases the structural strength of the neck to prevent it from bending, but also increases the resonance of the body to make the sound fuller and richer. Background Technology
[0002] As a popular and beloved instrument, the acoustic guitar's design and manufacturing details have a crucial impact on its tone and playing experience. However, guitars from different brands and models may have some design flaws that can affect their durability or tonal performance.
[0003] First, the neck is one of the core structures of an acoustic guitar. The neck bears the tension of the strings and directly affects the feel and stability during playing. When the neck bears the tension of the strings for a long time, it is prone to bending or deformation. In particular, because wood itself is highly sensitive to temperature and humidity, the bending or deformation of the neck is especially noticeable in environments with large humidity changes. Once the neck is bent, it will not only affect the guitar's intonation, but also make the player feel uncomfortable, and may even require professional repair to adjust or replace the neck.
[0004] Secondly, the soundboard structure inside the guitar body also has a significant impact on tone. The soundboard is an important component that supports the soundboard and is also responsible for regulating the vibration mode of the soundboard. However, if the soundboard is not designed properly, if the soundboard is too high or too thick, it will not only make the structure too strong and too heavy, but will also make the soundboard vibrate too inefficiently, resulting in a less rich tone and insufficient resonance in the acoustic guitar. If the soundboard is too thin or too small, although it can effectively improve the tone and volume, the soundboard is easily deformed due to changes in temperature and humidity, exceeding the allowable value. Summary of the Invention
[0005] The main objective of this invention is to provide an improved acoustic guitar. The improved acoustic guitar not only increases the structural strength of the neck to prevent irregular bending of the neck and even avoids irreversible deformation of the neck, but also improves the efficiency of high-frequency overtone vibration of the neck and allows its high-frequency timbre to enter the speaker cabinet and be amplified by resonance. This can effectively solve the problem of low volume and insufficient sustain (Wolf tone phenomenon) of specific frequencies (such as G#) when playing. It can also increase the resonance effect of the guitar body to make the sound fuller and enhance the multi-layered overtone effect that can be clearly heard when playing, thereby enriching the overall timbre.
[0006] The secondary objective of this invention is to provide an improved X-shaped main soundbar for an acoustic guitar. The purpose of the soundbar is to strengthen the soundboard structure and make it less prone to deformation. The improved hollowed-out X-shaped main soundbar can reduce the weight of the X-shaped main soundbar without weakening the soundbar structure. This lightweight X-shaped main soundbar will improve the vibration efficiency of the soundboard, thereby significantly improving the volume and tone of the acoustic guitar. At the same time, it can prevent the structure of the soundboard from being weakened during the process of improving the volume and tone, and the soundboard can be prevented from being deformed by the tension of the strings.
[0007] Another objective of this invention is to provide an improved acoustic guitar, which modifies the neck structure to change the connection between the neck and the carbon fiber strip, thereby altering the vibration characteristics of the improved neck and thus affecting the tone of the acoustic guitar. This allows the acoustic guitar to stably produce a clear and bright tone, and the improved neck can even increase tensile strength, preventing deformation or breakage under high string tension.
[0008] Another objective of this invention is to provide an acoustic guitar with increased soundboard vibration elasticity, thereby increasing the soundboard vibration efficiency and further enhancing the overall volume to achieve a balanced tone.
[0009] To achieve the aforementioned objective, the present invention provides an acoustic guitar comprising: a body and a neck; the body having a soundboard, a back plate and a side plate; the opposite sides of the side plate being connected to the soundboard and the side plate respectively; and the neck having a neck, a headstock and a fingerboard; one end of the neck forming the headstock and the other end being connected to the body; and a portion of the fingerboard being connected to the neck, with the remaining portion of the fingerboard covering a portion of the soundboard.
[0010] The neck comprises: a shank, an adjustment frame rod, and two carbon fiber strips. The shank has a mounting surface and a shaping surface on opposite sides. The shank is recessed from the mounting surface toward the shaping surface to form two grooves and a central channel between the two grooves. The adjustment frame rod is disposed inside the central channel to connect to the body of the instrument. Each carbon fiber strip is disposed one-to-one inside one of the grooves. One end of each carbon fiber strip is spaced apart from the shaping surface, and the other end of each carbon fiber strip is flush with the mounting surface. The fingerboard is connected to the mounting surface, so that the two carbon fiber strips are surrounded by the fingerboard and the shank and cannot be directly observed from the outside of the neck.
[0011] The soundboard includes: a board body, an X-shaped main sound beam, and an arc-shaped groove. The board body has a sound hole, and the X-shaped main sound beam is connected to the board body and has two interconnected main sound beams and multiple hollow through holes formed on the main sound beams. The connection between the two main sound beams is set as an intersection point, so that each main sound beam is divided into a main beam head section and a main beam tail section through the intersection point. The size of each contour of the multiple hollow through holes gradually decreases from the intersection point toward the outer edge of the board body. The arc-shaped groove is formed on the board body and spaced apart from the outer edge of the board body. One end of the arc-shaped groove is adjacent to the main beam head section of one of the main sound beams, and the other end of the arc-shaped groove is adjacent to the main beam head section of the other main sound beam. The arc-shaped groove passes under the main beam tail section of one of the main sound beams.
[0012] In this embodiment, the soundboard has a transverse sound beam connecting the board body. The transverse sound beam is located between the main beam ends of the two main sound beams and is penetrated by the adjustment frame rod. The main beam ends of the two main sound beams and the transverse sound beam are all located around the sound hole, so that the sound hole is located between the main beam ends of the two main sound beams and the transverse sound beam.
[0013] Additionally, the soundboard has an auxiliary sound beam connecting the board body. The auxiliary sound beam is located between the tail sections of the two main sound beams, and the end of the other auxiliary sound beam is located in one of the hollow through holes. One end of the auxiliary sound beam is adjacent to the tail section of the main beam, and the other end of the auxiliary sound beam is adjacent to the curved groove.
[0014] Furthermore, each of the main sound beams has a thick section in the central region, and a thin section with a height or width smaller than the thick section is provided on both sides of the thick section, and the intersection is formed in the thick sections of the two main sound beams.
[0015] Each of the grooves has two side surfaces and a bottom surface located between the two side surfaces, and the carbon fiber strip is in contact with both side surfaces and the bottom surface. The curved groove has multiple curved groove segments, which are spaced apart from each other along the outer edge of the plate.
[0016] The invention is characterized by the neck's shank being embedded with an adjustment frame rod and two carbon fiber strips, while the fingerboard of the neck is connected to the neck. This allows the adjustment frame rod and the two carbon fiber strips to be surrounded by the fingerboard and shank, making them invisible from the outside of the neck. Furthermore, the soundboard's X-shaped main beam has multiple perforated holes, the size of each hole gradually decreasing from the intersection of the X-shaped main beam towards the outer edge of the soundboard. Additionally, the curved grooves on the soundboard are adjacent to the head section of another main beam of the X-shaped main beam, and these grooves pass under the tail section of one of the X-shaped main beams. This not only prevents irreversible deformation of the neck but also improves the efficiency of the neck's high-frequency harmonic vibrations and allows its high-frequency tone to resonate and amplify within the soundbox. This effectively solves the problem of insufficient volume and sustain (Wolftone phenomenon) at specific frequencies (e.g., G#) during playing, and even increases the resonance of the body, making the sound fuller and enhancing the overall tone by allowing for more clearly audible multi-layered harmonic effects.
[0017] In addition, each of the X-shaped main soundbars has a thick section and a thin section, resulting in varying heights and widths. Furthermore, the X-shaped main soundbars have multiple perforated holes to reduce their overall weight. This hollowed-out design allows the X-shaped main soundbars to reduce weight without weakening the soundbar structure. This lightweight design improves the soundboard's vibration efficiency, thereby significantly enhancing the volume and tone of the acoustic guitar. At the same time, it prevents the soundboard structure from being weakened during the process of increasing volume and tone, and the soundboard is less likely to deform due to string tension.
[0018] Furthermore, when each carbon fiber strip is embedded inside the groove, the carbon fiber strip simultaneously contacts the two sides of the groove and the bottom surface of the groove, which allows the neck to change its vibration characteristics, thereby affecting the tone of the acoustic guitar. This enables the acoustic guitar to stably produce a clear and bright tone, and even increases the tensile strength of the neck, preventing deformation or breakage under high string tension.
[0019] Furthermore, the curved grooves are arranged in multiple spaced-apart curved groove segments around the soundboard, so that the curved grooves present a discontinuous appearance through multiple spaced-apart curved grooves. This allows the soundboard to reduce the constraint at the joint with the side plate when vibrating, thereby improving the vibration efficiency of the soundboard, further enhancing the overall volume and achieving the effect of balancing the tone. Attached Figure Description
[0020] Figure 1 This is a perspective view of the acoustic guitar of the present invention;
[0021] Figure 2 This is an exploded view of the acoustic guitar of the present invention;
[0022] Figure 3 for Figure 2 Exploded view of the middle body of the instrument;
[0023] Figure 4 for Figure 3 A schematic diagram of the midrange board;
[0024] Figure 5A A schematic diagram showing that the bottom surface of the main sound bar and the plate are both horizontally connected to each other.
[0025] Figure 5B A schematic diagram showing how the bottom surface of the main sound beam and the plate are connected to each other in an arc shape;
[0026] Figure 5C A schematic diagram showing that the width of the thin section of a beam is less than the width of the thick section of a beam.
[0027] Figure 6 for Figure 2 Exploded view of the neck of the zhongqin;
[0028] Figure 7 This is a cross-sectional view of the instrument neck;
[0029] Figure 8 A schematic diagram showing how the frame rods are used to adjust the curvature of the neck.
[0030] Figure labeling: 1-Acoustic guitar; 10-Body; 11-Soundboard; 111-Board; 111a-Soundhole; 112-X-shaped main soundbar; 112a-Main soundbar; 112a1-Crossing point; 112a2-Head section of main soundbar; 112a3-Tail section of main soundbar; 112a4-Bottom surface of soundbar; 112a5-Thick section of soundbar; 112a6-Thin section of soundbar; 112b-Thickened through hole; 113-Horizontal soundbar; 113a-Connecting hole; 114-Auxiliary soundbar; 115-Curved groove; 115a - Curved groove section; 116 - Bridge; 12 - Back plate; 13 - Side plate; 14 - Resonance chamber; 20 - Neck; 21 - Neck; 211 - Neck post; 211a - Mounting surface; 211b - Shaped surface; 211c - Groove; 211c1 - Groove side; 211c2 - Groove bottom; 211d - Center channel; 212 - Root; 213 - Adjustment frame rod; 214 - Carbon fiber strip; 22 - Headstock; 23 - Fingerboard; 24 - Knobs; 30 - Strings; D - Spacing distance. Detailed Implementation
[0031] The present invention will be further described below with reference to specific embodiments and accompanying drawings, and the advantages and features of the present invention will become clearer with the description.
[0032] Please see Figure 1 and Figure 2 As shown, the present invention provides an acoustic guitar 1, which mainly consists of a body 10 and a neck 20. Please refer to [link / reference]. Figure 2 , Figure 3 and Figure 4 As shown, the body 10 of the instrument has three parts: a soundboard 11, a back plate 12, and a side plate 13. The soundboard 11 is connected to one end of the side plate 13, and the back plate 12 is connected to the other end of the side plate 13, so that the soundboard 11, back plate 12, and side plate 13 together form a resonance chamber 14. The soundboard 11 includes: a plate body 111, an X-shaped main sound bar 112, a transverse sound bar 113, multiple auxiliary sound bars 114, an arc groove 115, and a bridge 116. As shown, the plate body 111 forms a sound hole 111a that connects to the resonance chamber 14. The X-shaped main sound bar 112 has two interconnected main sound bars 112a and multiple sound bars formed on the main sound bars 112a. The perforated through-holes 112b are arranged such that the connection between the two main sound beams 112a is set at an intersection point 112a1, so that each main sound beam 112a is divided into a main beam head section 112a2 and a main beam tail section 112a3 through the intersection point 112a1. Furthermore, each main sound beam 112a has a bottom surface 112a4 that can contact the plate body 111. The multiple perforated through-holes 112b are arranged from the intersection point 112a1 towards the outer edge of the plate body 111 according to their outline size, such that the perforated through-hole 112b with the largest outline is closer to the intersection point 112a1, and the perforated through-hole 112b with the largest outline is closer to the plate body 111. In a preferred embodiment, please refer to... Figure 5A As shown, the bottom surface 112a4 of the main sound beam 112a is horizontally connected to the horizontally oriented plate 111, allowing the bottom surface 112a4 to contact the plate 111. This results in the X-shaped main sound beam 112 connecting to the plate 111 and located inside the resonance chamber 14. However, the horizontal orientation of both the plate 111 and the bottom surface 112a4 of the main sound beam 112a is merely for illustrative purposes. Figure 5B As shown, the soundboard 11's body 111 and the bottom surface 112a4 of the main sound beam 112a both exhibit an arc shape, with the arc-shaped bottom surface 112a4 contacting the arc-shaped body 111. Each main sound beam 112a has a thick section 112a5 in its central region, and each main sound beam 112a has a thin section 112a6 on opposite sides of the thick section 112a5, with a height less than the thick section 112a5. The intersection point 112a1 is formed on the thick sections 112a5 of the two main sound beams 112a, and all the through holes 112b are formed on the thick sections 112a5. However, the fact that the thin section 112a6 is less than the thick section 112a5 is only for illustrative purposes. Figure 5C As shown, the width of the thin section 112a6 of the beam can be smaller than the width of the thick section 112a5 of the beam.
[0033] Furthermore, the transverse sound beam 113 of the soundboard 11 is connected to the body 111 of the soundboard 11, and the transverse sound beam 113 is located between the main beam ends 112a2 of the two main sound beams 112a, so that the transverse sound beam 113 is located inside the resonance chamber 14 of the body 10. The main beam ends 112a2 of the two main sound beams 112a and the transverse sound beam 113 are all located around the sound hole 111a, so that the sound hole 111a is located between the main beam ends 112a2 of the two main sound beams 112a and the transverse sound beam 113. Multiple auxiliary sound beams 114 are connected to the soundboard. The body 111, and the auxiliary sound beam 114 is located between the tail sections 112a3 of the two main sound beams 112a, and the end of one of the auxiliary sound beams 114 is located in one of the hollow through holes 112b. In this way, the resonance effect of the body 10 can be increased to make the sound fuller and richer. In addition, the height or width of the main sound beams 112a are not the same, which not only increases the structural strength of the main sound beams 112a to prevent the soundboard 11 from being deformed by the tension of the strings 30, but also changes the vibration mode of the soundboard 11 to affect the sound quality of the acoustic guitar 1.
[0034] The soundboard 11 has an arcuate groove 115 formed on the body 111 of the soundboard 11. The arcuate groove 115 is spaced at the outer edge of the body 111. One end of the arcuate groove 115 is adjacent to the head section 112a2 of one of the main sound beams 112a, and the other end of the arcuate groove 115 is adjacent to the head section 112a2 of the other main sound beam 112a. The arcuate groove 115 passes under the tail section 112a3 of each main sound beam 112a, so that a portion of the bottom surface 112a4 of each main sound beam 112a does not contact the body 111. Thus, the opposite ends of each auxiliary sound beam 114 are adjacent to the tail section 112a3 of the main sound beam and the arcuate groove 115, respectively. However, the soundboard 11 is recessed to form an arcuate groove 115, as... Figure 5C As shown, the curved groove 115 has multiple curved groove segments 115a, which are arranged at intervals along the outer edge of the plate 111, making the curved groove 115 appear discontinuous. In addition, the bridge 116 of the soundboard 11 is connected to the plate 111 of the soundboard 11 and is located outside the resonance chamber 14 of the body 10. Furthermore, the bridge 116 is connected to multiple strings 30.
[0035] Please see Figure 2 , Figure 6 and Figure 7As shown, the neck 20 has three parts: a neck 21, a headstock 22, and a fingerboard 23. One end of the neck 21 forms the headstock 22, and the other end of the neck 21 is connected to the side plate 13 of the body 10. The headstock 22 is equipped with multiple knobs 24 to connect one-to-one with one of the strings 30. A portion of the fingerboard 23 is connected to the neck 21, and the remaining portion of the fingerboard 23 covers a portion of the soundboard 11 of the body 10. In this embodiment, the neck 21 is provided with a handle 211, a root 212, and an adjustment frame rod. 213 and two carbon fiber strips 214, the handle 211 has a mounting surface 211a on one side to connect to the finger plate 23, and the handle 211 has a shaped surface 211b on the side away from the mounting surface 211a, and the handle 211 is recessed from the mounting surface 211a toward the shaped surface 211b to form two grooves 211c and a central channel 211d located between the two grooves 211c, wherein each groove 211c has two groove sides 211c1 and a groove bottom surface 211c2 located between the two groove sides 211c1.
[0036] Please see Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the root 212 of the neck 21 is integrally formed at one end of the shank 211 to connect to the side plate 13 of the body 10. A portion of the adjustment frame rod 213 is located inside the central channel 211d, and a portion of the adjustment frame rod 213 passes through the resonance chamber 14 of the body 10. The adjustment frame rod 213 located inside the resonance chamber 14 will pass through a connecting hole 113a in the transverse soundbar 113. In addition, each carbon fiber strip 214 of the neck 21 is one-to-one disposed in one of the... Inside the groove 211c of the handle 211, when the carbon fiber strip 214 is located inside the groove 211c, the carbon fiber strip 214 simultaneously contacts the two side surfaces 211c1 and the bottom surface 211c2 of the groove 211c, so that the carbon fiber strip 214 fills the groove 211c. Thus, one end of each carbon fiber strip 214 forms a gap D with the shaping surface 211b, while the other end of each carbon fiber strip 214 is flush with the mounting surface 211a of the handle 211. Figure 8As shown, the adjustment frame rod 213 is used to adjust the curvature of the neck 21, so that the neck 21 can avoid bending or deformation due to the tension of the strings 30. In this embodiment, when the fingerboard 23 is connected to the mounting surface 211a, the two carbon fiber strips 214 and the adjustment frame rod 213 are surrounded by the fingerboard 23 and the shank 211 and cannot be directly observed from the outside of the neck 20. The neck 21 can change its vibration characteristics because the carbon fiber strips 214 fill the groove 211c, thereby affecting the tone of the acoustic guitar 1, so that the acoustic guitar 1 can stably produce a clear and bright tone. The neck 21 can even improve its tensile strength and prevent deformation or breakage under high string tension.
[0037] The above description is illustrative only and not restrictive to the present invention. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope of the inventive concept, and all such modifications, variations or equivalents will fall within the protection scope of the present invention.
Claims
1. An acoustic guitar comprising: A musical instrument body comprising a soundboard, a back plate, and a side plate, wherein opposite sides of the side plate are respectively connected to the soundboard and the side plate; and A violin neck has a neck, a headstock and a fingerboard. One end of the neck forms the headstock and the other end is connected to the body of the violin. A portion of the fingerboard is connected to the neck, and the remaining portion of the fingerboard covers a portion of the soundboard. Its features are: The neck of the instrument includes: A handle has a mounting surface and a shaping surface on opposite sides. The handle is recessed from the mounting surface toward the shaping surface to form two grooves and a central channel between the two grooves. An adjusting frame rod is installed inside the central channel to connect to the body of the instrument; and Two carbon fiber strips are set one-to-one inside one of the grooves, with one end of each carbon fiber strip forming a gap with the shaped surface, and the other end of each carbon fiber strip being cut flush with the mounting surface; The fingerboard is connected to the mounting surface, so that the two carbon fiber strips are surrounded by the fingerboard and the shank and cannot be directly observed from the outside of the neck. The soundboard includes: A single plate with one tone hole; An X-shaped main sound beam connects to the plate body and has two interconnected main sound beams and multiple hollow through holes formed in the main sound beams. The connection point between the two main sound beams is set as an intersection point, such that each main sound beam is distinguished into a main beam head section and a main beam tail section through the intersection point. The size of each of the multiple hollow through holes gradually decreases from the intersection point towards the outer edge of the plate body. An arcuate groove is formed on the plate and spaced at the outer edge of the plate. One end of the arcuate groove is adjacent to the head section of one of the main sound beams, and the other end of the arcuate groove is adjacent to the head section of the other main sound beam. The arcuate groove passes under the tail section of one of the main sound beams.
2. The acoustic guitar according to claim 1, characterized in that, The soundboard has a transverse sound beam connecting the board body. The transverse sound beam is located between the main beam ends of the two main sound beams and is connected to the adjustment frame rod.
3. The acoustic guitar according to claim 2, characterized in that, The head sections of the two main sound beams and the transverse sound beams are all located around the sound hole, so that the sound hole is located between the head sections of the two main sound beams and the transverse sound beams.
4. The acoustic guitar according to claim 1, characterized in that, The soundboard has an auxiliary sound beam connecting the board body, the auxiliary sound beam being located between the tail sections of the two main sound beams, and the end of another auxiliary sound beam being located at one of the hollow through holes.
5. The acoustic guitar according to claim 4, characterized in that, One end of the auxiliary sound beam is adjacent to the tail section of the main beam, while the other end of the auxiliary sound beam is adjacent to the curved groove.
6. The acoustic guitar according to claim 1, characterized in that, Each of the main sound beams has a thick section in the central region and a thin section with a height or width smaller than the thick section on opposite sides of the thick section, and the intersection is formed in the thick sections of the two main sound beams.
7. The acoustic guitar according to claim 1, characterized in that, Each of the grooves has two groove sides and a groove bottom located between the two groove sides, while the carbon fiber strip simultaneously contacts the two groove sides and the groove bottom.
8. The acoustic guitar according to claim 7, characterized in that, The curved groove has multiple curved groove segments, which are spaced apart from each other along the outer edge of the plate.