A guzheng with a fine-tuning structure

Abstract

This utility model discloses a guzheng with a micro-adjustment structure, comprising: a bridge, a soundboard, and several strings. The bridge includes: a bridge base body, the top of which has at least one string-holding portion. The string-holding portion is set at a pointed angle, and its top forms a string-holding groove. The bridge base body is placed on the soundboard, and the string-holding groove corresponds to the string. One end of each string is connected to the soundboard through a micro-adjustment structure, which is used to adjust the tension of the string. This utility model uses an adjusting screw to adjust the gap between two elastic metal plates to adjust the string tension. Not only can the handwheel rotation drive the adjusting screw to move precisely, enabling fine adjustments to the string tension, but it also meets the stringent requirements for pitch accuracy in guzheng performance. The operation is convenient; the player does not need complicated steps, but can easily complete the adjustment by simply turning the handwheel, saving tuning time and improving performance efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of musical instruments, and in particular to a guzheng with a fine-tuning structure. Background Technology

[0002] In the field of stringed instruments, the bridge, as a key component that transmits the vibration of the strings to the body of the instrument, has a significant impact on the instrument's timbre, playing feel, and other performance characteristics.

[0003] Currently, although existing bridges have string slots at the top, most of the string placement parts adopt a trapezoidal or circular design. This design makes the thickness of the bridge at the string placement position relatively large. Excessive thickness may not only affect the transmission efficiency of string vibration and change the tonal characteristics of the instrument, but may also affect the player's finger contact experience with the strings to a certain extent, which is not conducive to the performance of playing skills. Utility Model Content

[0004] In response to the aforementioned problems with existing guzheng, the aim is to provide a guzheng with a fine-tuning structure.

[0005] The specific technical solution is as follows: A type of piano bridge includes: a bridge body, the top of which has at least one string-holding portion, the string-holding portion being set at a pointed angle, and the top of which forms a string-holding groove.

[0006] In a preferred embodiment, the string-releasing part has three sections.

[0007] In a preferred embodiment, a U-shaped groove is formed between two adjacent string-releasing portions.

[0008] In a preferred embodiment, the top of the string-releasing part is rounded.

[0009] In a preferred embodiment, the string groove is an arc-shaped groove.

[0010] In a preferred embodiment, four code feet are formed at the bottom of the code base body, and the four code feet are respectively located at the four corners of the code base body.

[0011] In a preferred embodiment, an arc-shaped groove is formed between two adjacent brackets.

[0012] In a preferred embodiment, the code foot, the code base body, and the string placement part are an integrated structure.

[0013] In a preferred embodiment, the bridge is made of PLA Basic material.

[0014] A guzheng includes any of the bridges described above. The guzheng includes a soundboard and a plurality of strings. The bridge base is placed on the soundboard, and the string slots are correspondingly used to place the strings.

[0015] The positive effects of the above technical solution compared with the existing technology are: (1) The string placement part of this utility model is set with a pointed corner and forms a string placement groove. Compared with the traditional trapezoidal or circular string placement part, the thickness of the string placement part is effectively reduced, which can reduce the resistance of the bridge to the vibration of the string, so that the vibration of the string can be transmitted to the bridge body more efficiently, and then transmitted to the body of the instrument. This helps to improve the purity and clarity of the tone of the stringed instrument, and make the sound played more transparent and full.

[0016] (2) Due to the reduced thickness of the string-releasing part, this utility model reduces unnecessary interference of the bridge structure on the string vibration, making the string vibration mode closer to the natural state, which helps to produce a richer and more harmonious overtone series, enhances the sense of layering and richness of timbre, and enables stringed instruments to exhibit a more beautiful and moving sound quality.

[0017] (3) Adjusting the tension of the strings by adjusting the gap between the two elastic metal plates using the adjusting screw has the following advantages: First, it has high precision. The handwheel can drive the adjusting screw to move precisely, which can make fine adjustments to the tension of the strings and meet the strict requirements for pitch in guzheng performance. Second, it is easy to operate. The performer does not need complicated steps. He can simply turn the handwheel to complete the adjustment, saving tuning time and improving performance efficiency. Third, it has strong stability. The elastic metal plates can stably transmit the force of the adjusting screw during the adjustment process, ensuring that the tension of the strings remains stable after adjustment, reducing pitch changes caused by loose strings during performance, and ensuring the performance effect. Fourth, it has good durability. The overall design of the adjustment structure is reasonable and the components are closely matched. It is not easily damaged during long-term and frequent adjustments, which extends the service life of the fine-tuning structure and the guzheng as a whole. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the bridge structure of a guzheng with a fine-tuning structure according to the present invention; Figure 2 This is a top view of the bridge of a guzheng with a fine-tuning structure according to the present invention; Figure 3 This is a schematic diagram of the micro-adjustment structure of a guzheng (Chinese zither) according to the present invention. Figure 4 This is a schematic diagram of the structure of two elastic metal plates of a guzheng with a fine-tuning structure according to the present invention; In the attached diagram: 1. Code holder body; 11. String placement part; 12. Code foot; 13. String placement groove; 14. U-shaped groove; 15. Arc-shaped groove; 2. Fine-tuning structure; 21. Elastic metal sheet; 22. Adjustment gap; 23. Adjustment screw; 24. Handwheel; 25. Bolt; 26. Nut; 27. Positioning block; 211. First connecting part; 212. Second connecting part; 271. Positioning port; Detailed Implementation

[0019] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Figure 1 This is a schematic diagram of the bridge structure of a guzheng (Chinese zither) with a fine-tuning mechanism according to this utility model. Figure 2 This is a top view of the bridge of a guzheng with a fine-tuning structure according to this utility model. Figure 1-2 As shown, a preferred embodiment of a piano bridge is illustrated, comprising: a bridge body 1, the top of the bridge body 1 having at least one string placement portion 11, the string placement portion 11 being provided with a pointed angle, and the top of its top forming a string placement groove 13.

[0023] Specifically, the string placement part 11 is set with a pointed angle and forms a string placement groove 13. Compared with the traditional trapezoidal or circular string placement part 11, the thickness of the string placement part 11 is effectively reduced, which can reduce the resistance of the bridge to the vibration of the strings, so that the vibration of the strings can be transmitted to the bridge body 1 more efficiently, and then transmitted to the body of the instrument. This helps to improve the purity and clarity of the tone of the stringed instrument, and makes the sound produced more transparent and full.

[0024] Because the thickness of the string rest 11 is reduced, unnecessary interference with string vibration caused by the bridge's own structure is reduced, making the string vibration mode closer to the natural state. This helps to produce a richer and more harmonious overtone series, enhances the layering and richness of the timbre, and enables stringed instruments to exhibit a more beautiful and moving sound quality.

[0025] Furthermore, as a preferred embodiment, the string-releasing parts 11 are three in number. Specifically, by setting three string-releasing parts 11 on the bridge body 1, a structural innovation is achieved where one bridge simultaneously supports three strings. This design significantly improves the stress distribution on the guzheng from the perspective of mechanical balance and structural optimization. Traditional bridge designs, if they need to support multiple strings, often require increasing the number of bridges or adjusting the layout, which can easily lead to localized pressure concentration. The three string-releasing parts 11 design of this application allows the tension of the three strings to be more evenly distributed throughout the bridge, and then evenly transmitted to the guzheng soundboard. Compared to single or double string support structures, this design significantly reduces the pressure borne by the guzheng soundboard per unit area, avoids the risk of soundboard deformation caused by long-term uneven localized stress, effectively extends the service life of the guzheng, and ensures the stability of the instrument's tone and the reliability of its performance.

[0026] Furthermore, as a preferred embodiment, a U-shaped groove 14 is formed between two adjacent string rests 11. From a mechanical point of view, the unique arc-shaped contour of the U-shaped groove 14 can effectively disperse the stress concentration generated when the strings vibrate. When the strings vibrate and their energy is transferred to the bridge, the curved structure of the U-shaped groove 14 can buffer and guide the force borne by the adjacent string rests 11, making the force transmission more uniform and smooth, avoiding damage to the bridge structure caused by excessive local stress, and ensuring the long-term stability of the bridge. From an acoustic point of view, the existence of the U-shaped groove 14 creates a relatively independent and stable acoustic environment for the string vibration. It reduces the mutual interference between adjacent string vibrations, allowing the vibration characteristics of each string to be presented more purely, which helps to improve the clarity and separation of the tone.

[0027] Furthermore, as a preferred embodiment, the top of the string-releasing part 11 is rounded. The design of the shape of the string-releasing part 11 reduces the thickness and changes the contact between the bridge, the strings, and the player's fingers. When the player operates the strings, the contact between the fingers and the bridge is smoother, reducing the obstruction caused by the excessive thickness of the bridge. This helps the player to control the vibration and pitch of the strings more accurately, improves the flexibility and expressiveness of the performance, and makes the performance process more comfortable and natural.

[0028] Furthermore, as a preferred embodiment, the string groove 13 is an arc-shaped groove. By designing the string groove 13 as an arc-shaped structure, the problem of unwanted noise in stringed instruments is effectively avoided from the perspectives of acoustic principles and mechanical transmission mechanisms. Specifically, during string vibration, the curved contour of the arc-shaped groove can form a smooth and continuous contact interface with the string. Compared to grooves of other shapes, it avoids unnecessary friction and cutting action on the string caused by sharp edges or irregular edges, reducing abnormal energy dissipation and abnormal vibration excitation at these discontinuous contact points during string vibration. Simultaneously, the curvature design of the arc-shaped groove can guide the string vibration energy to be transmitted more evenly to the bridge and body, optimizing the vibration transmission path and fundamentally suppressing unwanted harmonics, friction noise, and other noise components caused by unreasonable groove structures. This significantly improves the purity and clarity of the stringed instrument's tone, creating a purer and higher-quality acoustic environment for the performer.

[0029] Furthermore, as a preferred embodiment, four bridge feet 12 are formed at the bottom of the bridge base body 1. The four bridge feet 12 are located at the four corners of the bridge base body 1. The structural design of setting four bridge feet 12 at the four corners of the bottom of the bridge base body 1 significantly enhances the stability of the bridge base body 1 when placed on the guzheng. Since the four bridge feet 12 are evenly distributed at the four key positions of the bridge base body 1, they work together to form a stable support system. During the vibration of the strings and the playing operation, this support system can balance the forces on the bridge in all directions, reduce the risk of displacement caused by external force interference, and ensure that the bridge can always be stably fixed on the guzheng soundboard, thereby ensuring the stable output of the stringed instrument's sound quality and the smooth performance.

[0030] Furthermore, as a preferred embodiment, an arc-shaped groove 15 is formed between two adjacent feet 12.

[0031] Furthermore, as a preferred embodiment, the code foot 12, the code base body 1, and the string placement part 11 are an integrated structure.

[0032] Furthermore, as a preferred embodiment, the bridge is made of PLA Basic material. By using PLA Basic material to make the bridge, the hardness of the material is reduced, allowing the bridge to distribute the force more evenly when under stress. This changes the force transmitted to the guzheng soundboard from point contact to surface contact, effectively preventing scratches on the guzheng soundboard caused by the excessive hardness of the bridge feet 12. This ensures the normal functioning of the bridge and provides good protection for the guzheng soundboard.

[0033] Figure 3 This is a schematic diagram of the micro-adjustment structure of a guzheng (Chinese zither) according to this utility model. Figure 4 This is a schematic diagram of the structure of two elastic metal plates of a guzheng with a fine-tuning structure according to the present invention. Figure 3-4 As shown, a guzheng with a fine-tuning structure 2 includes any of the bridges mentioned above. The guzheng includes a soundboard and several strings. The bridge base body 1 is placed on the soundboard, and the string slots 13 are used to place the strings. One end of each string is connected to the soundboard through the fine-tuning structure 2. The fine-tuning structure 2 is used to adjust the tension of the strings.

[0034] Furthermore, as a preferred embodiment, the fine-tuning structure 2 includes: two elastic metal sheets 21 and an adjustment component. The two elastic metal sheets 21 are arranged symmetrically, one end of the two elastic metal sheets 21 is connected to each other to form a first connection portion 211 connected to the panel, and the other end of the two elastic metal sheets 21 is connected to each other to form a second connection portion 212 connected to one end of the string. An adjustment gap 22 is formed between the two elastic metal sheets 21, and the adjustment component is used to adjust the size of the adjustment gap 22 to adjust the tension of the string.

[0035] Furthermore, in a preferred embodiment, the adjustment assembly includes an adjustment screw 23 and a handwheel 24. The adjustment screw 23 is threaded onto the upper elastic metal plate 21, and the bottom of the adjustment screw 23 is rotatably connected to the lower elastic metal plate 21. The handwheel 24 is coaxially connected to the top of the adjustment screw 23. By rotating the handwheel 24, the adjustment screw 23 is rotated, thereby adjusting the size of the adjustment gap 22. When the strings need to be tightened, the adjustment screw 23 is rotated, causing the two elastic metal plates to deform longitudinally to both sides, thereby increasing the adjustment gap 22 and tightening the strings. When the strings need to be loosened, the adjustment screw 23 is rotated in the opposite direction, reducing the adjustment gap and loosening the strings.

[0036] The method of adjusting the string tension by rotating the handwheel 24 and using the adjusting screw 23 to adjust the gap 22 between the two elastic metal plates 21 has the following advantages: First, high adjustment precision. The rotation of the handwheel 24 can drive the adjusting screw 23 to move precisely, enabling fine adjustments to the string tension and meeting the stringent requirements for intonation in guzheng performance. Second, convenient operation. The performer does not need complicated steps; simply rotating the handwheel 24 is sufficient to complete the adjustment, saving tuning time and improving performance efficiency. Third, strong stability. The elastic metal plates 21 can stably transmit the force of the adjusting screw 23 during adjustment, ensuring that the string tension remains stable after adjustment, reducing intonation changes caused by string loosening during performance, and ensuring performance quality. Fourth, good durability. The overall design of this adjustment structure is reasonable, and the components fit together tightly, making it less prone to damage during long-term and frequent adjustments, thus extending the service life of the fine-tuning structure 2 and the guzheng as a whole.

[0037] In some embodiments, the elastic metal sheet 21 may be made of stainless steel or alloy steel.

[0038] Specifically, the top of the elastic metal sheet 21 located below has a positioning block 27, the top of the positioning block 27 has a positioning opening 271, and the bottom of the adjusting screw 23 is rotatably disposed in the positioning opening 271.

[0039] Furthermore, as a preferred embodiment, a nut 26 is fixed on the upper elastic metal sheet 21 and threaded onto the outside of the adjusting screw 23.

[0040] More preferably, the first connecting part 211 is connected to the panel by bolts 25.

[0041] In some embodiments, the second connecting portion 212 is welded to the string.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A guzheng with a fine-tuning structure, characterized in that, include: The bridge includes: a bridge body, the top of which has at least one string-holding part, the string-holding part being set at a pointed angle, and the top of which forms a string-holding groove; The instrument has a soundboard and several strings. The bridge body is placed on the soundboard, and the string slots are correspondingly placed on the strings. One end of each string is connected to the soundboard through a fine-tuning structure, which is used to adjust the tension of the string. The fine-tuning structure includes: two elastic metal sheets and an adjustment component. The two elastic metal sheets are arranged symmetrically up and down. One end of the two elastic metal sheets is connected to each other to form a first connection part connected to the panel. The other end of the two elastic metal sheets is connected to each other to form a second connection part connected to one end of the string. An adjustment gap is formed between the two elastic metal sheets, and the adjustment component is used to adjust the size of the adjustment gap to adjust the tension of the string.

2. The guzheng with a fine-tuning structure according to claim 1, characterized in that, The string-releasing section has three parts.

3. The guzheng with a fine-tuning structure according to claim 2, characterized in that, A U-shaped groove is formed between two adjacent string-releasing parts.

4. The guzheng with a fine-tuning structure according to claim 1, characterized in that, The top of the string release section is rounded.

5. The guzheng with a fine-tuning structure according to claim 1, characterized in that, The string groove is an arc-shaped groove.

6. The guzheng with a fine-tuning structure according to claim 1, characterized in that, The bottom of the code holder body has four code feet, which are located at the four corners of the code holder body.

7. The guzheng with a fine-tuning structure according to claim 1, characterized in that, The bridge is made of PLA Basic material.

8. The guzheng with a fine-tuning structure according to claim 1, characterized in that, The adjustment component includes: An adjusting screw is threaded onto the upper elastic metal plate, and the bottom of the adjusting screw is rotatably connected to the lower elastic metal plate. A handwheel is coaxially connected to the top of the adjusting screw. By rotating the handwheel, the adjusting screw is rotated, thereby adjusting the size of the adjusting gap.

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