A noise-reducing erhu bridge structure

Abstract

This utility model relates to the field of erhu (a two-stringed bowed instrument) technology, specifically to an erhu bridge structure with noise reduction function. The structure includes a main body, which, from bottom to top, comprises a support section, a conduction section, and a string groove section. The support section has a bottom edging structure surrounding its outer perimeter to protect the skin and enhance stability, and a vertical conduction hole at the bottom. The conduction section has a horizontal circular through-hole coaxially connected to the vertical conduction hole, forming a composite vibration channel. The difference in inner diameter and the smooth transition surface reduce vibration reflection noise. The string groove section features symmetrical U-shaped string grooves. The arc-shaped section between the grooves, the arc-shaped sound-guiding surface at the bottom of the groove, and the oblique conduction holes on the side walls optimize vibration transmission. The arc-shaped sound-guiding surface is covered with a damping coating to further reduce noise and improve tone separation. The arc-shaped guide surface of the support section, the anti-slip texture on the bottom surface, and the integrally molded bamboo structure work together to ensure the stability and durability of the bridge. This utility model effectively solves the technical problems of traditional bridges, such as excessive noise, easy damage to the skin, and inefficient vibration transmission.

Description

Technical Field

[0001] This utility model relates to the field of erhu technology, and more specifically to an erhu code structure with noise reduction function. Background Technology

[0002] Currently, the erhu is the core instrument for accompaniment in traditional Chinese opera. Its sound purity and vibration transmission efficiency directly affect the performance effect, while the bridge of the jinghu serves as the vibration transmission hub between the strings and the skin.

[0003] However, existing erhu bridges have many limitations. From the perspective of vibration transmission, most existing erhu bridges are single-channel structures, which cannot effectively guide and distribute the string vibration energy. The vibration energy is irregularly reflected and scattered within the channel. During performance, high-frequency vibrations repeatedly reflect off the hole walls, producing noises such as "whistling" and "humming," which are more pronounced during rapid bowing or strong playing. Furthermore, the difficulty in forming an effective composite resonant cavity limits volume and tone enhancement. Regarding stability in contact with the skin, the bottom edges are often sharp right angles or sharp edges without protective structures. High-frequency vibrations and relative displacement easily scratch the skin, and uneven contact pressure can lead to localized overload, causing abnormal vibration noise. Simultaneously, their own stability is poor, potentially leading to lateral displacement or deformation that interferes with tone transmission. From the perspective of string slot design, the separation structure is rudimentary, mostly consisting of upright partitions. When two strings vibrate, vibration energy easily travels between the slots, causing crosstalk. This results in poor tone separation and affects melodic clarity. Moreover, the lack of a sound-guiding structure at the bottom of the string slots causes vibration energy to stagnate and be lost at the joint, failing to efficiently transmit to the skin and reducing sound quality. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention provides a huqin bridge structure with noise reduction function, which addresses the problems of poor vibration transmission of the jinghu bridge leading to a lot of noise, poor contact with the skin causing easy damage to the skin and noise, poor string groove design leading to crosstalk and inefficient energy transmission.

[0005] To achieve the above objectives, this utility model adopts the following technical solution:

[0006] This utility model provides a huqin (a two-stringed bowed instrument) bridge structure with noise reduction function, including a body, wherein a support part, a conduction part and a string groove part are arranged sequentially from bottom to top in the body;

[0007] The bottom of the support part is provided with an edge-sealing structure, which extends continuously to the edge of the support part and surrounds the outer periphery of the support part. A vertical transmission hole is provided at the bottom of the support part.

[0008] The conductive part has a horizontally penetrating circular through hole, and the vertical conductive hole is located at the center of the support part. The circular through hole and the vertical conductive hole are connected to form a composite vibration channel.

[0009] The groove portion has at least two grooves, and the grooves are symmetrical about the central axis of the vertical conduction hole of the groove portion; the two end faces of the support portion extend upward in an arc shape to the groove portion to form an arc-shaped guide surface.

[0010] The present invention is further configured such that: the circular through hole and the vertical conduction hole are coaxially arranged, the inner diameter of the circular through hole is larger than the inner diameter of the vertical conduction hole, and a smooth transition surface is formed at the connection between the circular through hole and the vertical conduction hole.

[0011] The present invention is further configured such that: there are two string grooves, namely a first string groove and a second string groove, and an arc-shaped portion is provided between the first string groove and the second string groove. The arc-shaped portion extends to the opening of the first string groove and the second string groove on both sides, and an arc-shaped transition surface is formed on the side wall of the string groove by the arc-shaped portion.

[0012] The present invention is further configured such that: both the first string groove and the second string groove are U-shaped open grooves, and the bottom of the groove is provided with an inwardly recessed arc-shaped sound guiding surface, the arc-shaped sound guiding surface extending from the bottom of the groove to the opening; the arc-shaped sound guiding surface is used to connect the arc-shaped part so that the groove wall of the string groove transitions smoothly.

[0013] The present invention is further configured such that the surface of the arc-shaped sound guiding surface is covered with a damping coating.

[0014] The present invention is further configured such that: an oblique conduction hole is provided on the side wall of the first chord groove and the second chord groove, the oblique conduction hole is connected to the side wall of the circular through hole, and the angle between the projection of the axis of the oblique conduction hole and the axis of the circular through hole on the horizontal plane is 55°-60°.

[0015] The present invention is further configured such that: the bottom surface of the support part is provided with concave and convex anti-slip texture, and the anti-slip texture is a grid-like or wavy structure.

[0016] The present invention is further configured such that the supporting part, the conductive part and the groove part are all integrally molded structures made of bamboo.

[0017] In summary, this utility model has the following beneficial effects:

[0018] This utility model includes a main body, which comprises a support section, a conduction section, and a string groove section arranged sequentially from bottom to top. The bottom of the support section has a edging structure that wraps around its outer perimeter to protect the skin and enhance stability. A vertical conduction hole is coaxially connected to a circular through hole, with an inner diameter larger than the vertical conduction hole and a smooth transition surface to reduce vibration reflection and noise. The arc-shaped guide surface of the support section is connected to the arc-shaped sound guide surface and arc-shaped transition surface of the string groove section. The arc-shaped sound guide surface has a damping coating to reduce vibration loss. The symmetrical U-shaped string groove ensures balanced transmission of the vibration energy of the two strings, improving tone separation. Anti-slip texture ensures stable bridge position, and the integrated bamboo structure ensures durability. This design solves the problems of noise, skin damage, and low vibration efficiency associated with traditional bridges, preserving the tone of the Jinghu and improving performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a front view of the present invention;

[0021] Figure 3 This is a partial structural schematic diagram of the present invention;

[0022] Figure 4 This is a partial structural schematic diagram of the present invention.

[0023] Reference numerals: 1. Support part; 2. Conducting part; 3. String groove part; 7. Circular through hole; 8. Vertical conducting hole; 9. First string groove; 10. Second string groove; 11. Edge binding structure; 12. Arc-shaped guide surface; 13. Arc-shaped part; 14. Anti-slip texture; 17. Angled conducting hole; 32. Arc-shaped sound guiding surface. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] To make the objectives, solutions, and advantages of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0026] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement the present invention. In other embodiments, well-known structures, circuits, materials, or methods are not specifically described in order to avoid obscuring the present invention.

[0027] In the description of this utility model, the terms "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are 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 limiting the scope of protection of this utility model.

[0028] The following is in conjunction with the appendix of this utility model. Figure 1-4 The embodiments of this utility model will be described in detail below.

[0029] Example 1:

[0030] This embodiment provides a noise-reducing erhu bridge structure, including a body. The body is provided with a support part 1, a conduction part 2, and a string groove part 3 from bottom to top. The bottom of the support part 1 is provided with an edging structure 11. The edging structure 11 extends continuously to the edge of the support part 1 and surrounds the outside of the support part 1. The continuous surrounding edging contour can be directly cut or ground on the raw material of the support part 1 to create an arc surface or a stepped surface, ensuring the continuity of vibration transmission. Alternatively, prefabricated edging components such as leather strips or rubber rings can be fixed to the bottom edge of the support part 1 by gluing or snapping. This can evenly distribute pressure, protect the erhu skin, reduce noise, balance vibration transmission, and improve durability.

[0031] The support part 1 has a vertical conduction hole 8 at its bottom, and the conduction part 2 has a horizontally penetrating circular through hole 7. The vertical conduction hole 8 is located at the center of the support part 1. The circular through hole 7 is connected to the vertical conduction hole 8 to form a composite vibration channel: vibration energy is conducted vertically through the vertical conduction hole 8 to the circular through hole 7 and then diffuses laterally. Compared with the single-channel structure, the composite vibration channel reduces the disordered reflection of vibration energy in the channel and avoids noise caused by repeated reflection of high-frequency vibrations on the hole wall. The vertical channel guides the vertical vibration energy of the string to be conducted downward, and the horizontal channel diffuses the energy laterally, forming a "vertical-lateral" three-dimensional conduction path. Since the diameter of the circular through hole 7 is larger than that of the vertical conduction hole 8, and the connection adopts a smooth transition design, it can reduce the irregular reflection and scattering of vibration energy at the abrupt change in the channel cross-section, effectively suppressing noises such as "whistling" and "humming". At the same time, the connected channel structure forms a resonant cavity, which improves the coupling efficiency of vibration energy, enhances the volume, and optimizes the uniformity of timbre transmission, making the sound quality purer.

[0032] The string groove section 3 has at least two string grooves, which are symmetrical about the central axis of the vertical conduction hole 8 of the string groove section 3. The two end faces of the support section 1 extend upward in an arc shape to the string groove section 3, forming an arc-shaped guide surface 12. The symmetrical layout of the string grooves ensures that the vibration energy of the two strings can be transmitted evenly, avoiding vibration imbalance caused by uneven energy distribution. The symmetrical structure prevents the vibration of the two strings from interfering with each other, preventing crosstones caused by the lateral transmission of vibration energy between the string grooves, and ensuring the balance and separation of the tone of the two strings. The arc-shaped guide surface 12 of the support section 1 smoothly guides the vibration energy to the string groove section 3, forming a continuous vibration transmission path and reducing energy loss during vibration transmission.

[0033] This invention is applicable not only to the erhu but also to the cover plate.

[0034] Example 2:

[0035] To further avoid noise interference, this embodiment is based on the above embodiment, such as... Figure 1 As shown, in this embodiment, the circular through-hole 7 and the vertical conduction hole 8 are coaxially arranged, with the inner diameter of the circular through-hole 7 being larger than that of the vertical conduction hole 8, forming a smooth transition surface at their connection. This structure causes the vibration energy of the string to change from longitudinal to transverse when it enters the circular through-hole 7 from the vertical conduction hole 8, with a buffer transition formed by the change in inner diameter. The smooth transition surface eliminates vibration reflection nodes caused by abrupt changes in aperture, reducing reflection loss of high-frequency vibrations at the connection. The diffusion effect formed by the difference in inner diameter ensures uniform distribution of vibration energy, avoiding local overload caused by energy concentration. The coaxial arrangement ensures the straightness of the vibration transmission path, reduces directional deviation during energy transmission, thereby reducing noise caused by structural abrupt changes, and enabling vibration energy to be stably transmitted to all parts of the bridge and finally to the soundboard, improving the stability and clarity of the tone during performance.

[0036] Example 3:

[0037] To further enhance the stability of the erhu bridge and prevent vibration imbalance caused by changes in the position of the string grooves, such as Figures 1-3 As shown, in this embodiment, there are two string grooves, namely a first string groove 9 and a second string groove 10. An arc-shaped portion 13 is provided between the first string groove 9 and the second string groove 10. The arc-shaped portion 13 extends to the openings of the first string groove 9 and the second string groove 10 on both sides, and forms an arc-shaped transition surface on the side wall of the string groove by the arc-shaped portion 13.

[0038] When the two strings vibrate, the vibrational energy can be smoothly transmitted along the arc-shaped section 13, avoiding direct lateral transmission of energy between the string slots and causing vibrational imbalance. The arc-shaped transition surface creates a smooth connection at the opening of the string slots, reducing abrupt changes in direction during vibration transmission and ensuring that the vibrational energy is transmitted along the designated path. The structure of the arc-shaped section 13 enhances the overall rigidity of the bridge, preventing structural deformation caused by changes in the spacing between the string slots and ensuring the stability of the two-string vibration state. This design effectively avoids mutual interference during two-string vibration, ensuring that the vibrational energy is accurately transmitted to the soundboard and maintaining the balance and stability of the tone during erhu playing.

[0039] Example 4:

[0040] To reduce energy crosstalk during the vibration of the two strings of the Jinghu, this embodiment, based on the above embodiment, features an inwardly recessed arc-shaped sound-guiding surface 32 at the bottom of the first string slot 9 and the second string slot 10. This sound-guiding surface extends from the bottom of the slot towards the opening and connects with the arc-shaped portion 13, creating a smooth transition structure between the slot walls. When the strings vibrate, the arc-shaped sound-guiding surface 32 guides the vibrational energy along the slot wall towards the opening, preventing direct energy transfer to adjacent string slots. The smooth connection between the arc-shaped sound-guiding surface 32 and the arc-shaped portion 13 creates a directional flow path for the vibrational energy as it is transferred between the string slots, reducing lateral energy leakage. The U-shaped opening slot structure, combined with the arc-shaped sound-guiding surface 32, maintains the spatial volume of the string slots while controlling the direction of vibrational energy transmission through the curved shape of the sound-guiding surface, effectively blocking the vibration coupling channel between the two strings and reducing energy crosstalk. This structure ensures that the vibrational energy of each string is independently transmitted to the corresponding part of the bridge and ultimately accurately transmitted to the soundboard, improving the clarity and separation of the two strings' sound.

[0041] Furthermore, the surface of the arc-shaped sound-conducting surface 32 is covered with a damping coating, which can be made of molecular materials such as epoxy resin and acrylate, thereby further enhancing the balance between noise suppression and sound quality fidelity.

[0042] Example 5:

[0043] This embodiment is based on the above embodiment. In this embodiment, please refer to... Figure 1 , Figure 3An oblique conduction hole 17 is provided on the sidewall of the first string groove 9 and the second string groove 10. The oblique conduction hole 17 is connected to the sidewall of the circular through hole 7. The projection angle between the axis of the oblique conduction hole 17 and the axis of the circular through hole 7 on the horizontal plane is 55°-60°. When the string vibrates, the vibration energy is transmitted through the string groove to the oblique conduction hole 17, and then enters the composite vibration channel formed by the circular through hole 7 and the vertical conduction hole 8, realizing the conduction of vibration energy. The specific angle of the projection angle between the axis of the oblique conduction hole 17 and the axis of the circular through hole 7 on the horizontal plane is set to 55°-60°. This specific angle can avoid excessive scattering or reflection of vibration energy during the conduction process, so that the vibration energy enters the circular through hole 7 in a reasonable direction and angle, accurately guides the vibration energy to be conducted along the predetermined path, and at the same time reduces the crosstalk phenomenon between the string grooves when the two strings vibrate.

[0044] Example 6:

[0045] To further improve the stability of this utility model, this embodiment is based on the above embodiment. In this embodiment, as follows: Figure 4 As shown, the bottom surface of the support part 1 is provided with concave and convex anti-slip texture 14, which is a grid-like or wavy structure. By increasing the contact area and surface roughness with the skin, the friction between the two is significantly enhanced, effectively preventing the bridge from shifting or wobbling laterally during playing, ensuring its positional stability, reducing abnormal vibrations and noise caused by positional changes, and making the contact pressure distribution more uniform, avoiding local overload damage to the skin, further improving the stability of the contact between the bridge and the skin, and optimizing the tone transmission effect.

[0046] Example 7:

[0047] This embodiment is based on the above embodiment. In this embodiment, as follows: Figure 4 As shown, the support part 1, the conduction part 2 and the groove part 3 are all integrally molded structures made of bamboo.

[0048] Bamboo itself is tough and has a moderate density, possessing excellent vibration conduction properties. This allows for the efficient transmission of string vibration energy, ensuring clear and pure sound quality. The one-piece molding process avoids gaps and weak points that may occur in traditional splicing structures, eliminates noise caused by looseness and friction between parts, and enhances the overall structural strength and stability of the bridge.

[0049] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A huqin (a two-stringed bowed instrument) bridge structure with noise reduction function, characterized in that, The body includes a support part (1), a conduction part (2) and a groove part (3) arranged sequentially from bottom to top. The bottom of the support part (1) is provided with an edge-wrapping structure (11), which extends continuously to the edge of the support part (1) and surrounds the outer periphery of the support part (1). The bottom of the support part (1) is provided with a vertical transmission hole (8). The conductive part (2) has a horizontally penetrating circular through hole (7), and the vertical conductive hole (8) is located at the center of the support part (1). The circular through hole (7) and the vertical conductive hole (8) are connected to form a composite vibration channel. The groove part (3) is provided with at least two grooves, and the grooves are symmetrical about the central axis of the vertical transmission hole (8) of the groove part (3); the two end faces of the support part (1) extend upward in an arc shape to the groove part (3) to form an arc-shaped guide surface (12).

2. The erhu code structure with noise reduction function according to claim 1, characterized in that, The circular through hole (7) and the vertical transmission hole (8) are coaxially arranged. The inner diameter of the circular through hole (7) is larger than the inner diameter of the vertical transmission hole (8). A smooth transition surface is formed at the connection between the circular through hole (7) and the vertical transmission hole (8).

3. The erhu bridge structure with noise reduction function according to claim 1, characterized in that, There are two string grooves, namely the first string groove (9) and the second string groove (10). An arc-shaped part (13) is provided between the first string groove (9) and the second string groove (10). The arc-shaped part (13) extends to the opening of the first string groove (9) and the second string groove (10) on both sides, and the arc-shaped part (13) forms an arc-shaped transition surface on the side wall of the string groove.

4. The erhu bridge structure with noise reduction function according to claim 3, characterized in that, The first string groove (9) and the second string groove (10) are both U-shaped open grooves, and the bottom of the groove is provided with an inwardly recessed arc-shaped sound guiding surface (32). The arc-shaped sound guiding surface (32) extends from the bottom of the groove to the opening. The arc-shaped sound guiding surface (32) is used to connect the arc-shaped part (13) so that the groove wall of the string groove transitions smoothly.

5. The erhu bridge structure with noise reduction function according to claim 4, characterized in that, The surface of the arc-shaped sound-guiding surface (32) is covered with a damping coating.

6. The erhu code structure with noise reduction function according to claim 5, characterized in that, An oblique conduction hole (17) is provided on the side wall of the first chord groove (9) and the second chord groove (10). The oblique conduction hole (17) is connected to the side wall of the circular through hole (7). The angle between the projection of the axis of the oblique conduction hole (17) and the axis of the circular through hole (7) on the horizontal plane is 55°-60°.

7. The erhu bridge structure with noise reduction function according to claim 1, characterized in that, The bottom surface of the support part (1) is provided with a textured anti-slip pattern (14), which is a grid or wave-shaped structure.

8. The erhu bridge structure with noise reduction function according to any one of claims 1-7, characterized in that, The support part (1), the conduction part (2) and the groove part (3) are all integral molded structures made of bamboo.

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