Plug-in type urheen fine tuning jack convenient to assemble and disassemble

Abstract

The invention discloses a plug-in type Erhu fine tuning jack convenient to assemble and disassemble, and relates to the technical field of musical instrument accessories, and the plug-in type Erhu fine tuning jack comprises an assembling support which is provided with an opening at one side and is internally provided with a clamping groove for attaching to an Erhu rod; the guide slot is formed in the assembly bracket; the movable support is movably installed on the assembly support, one side of the movable support is provided with a clamping part, the clamping part is matched with the guide slot, and the movable support is provided with a through hole for a string to pass through; the bearing support is located on one side of the Erhu rod, a transverse clamping hole is formed in the bearing support, and after the assembling support and the movable support are matched with each other, the bearing support is clamped on the outer wall of the assembling support and the outer wall of the movable support through the clamping hole. No external tool is needed, the erhu strings can be finely adjusted, and meanwhile, the dismounting and mounting efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of musical instrument accessories technology, specifically to a plug-in type erhu fine-tuning jack that is easy to install and remove. Background Technology

[0002] In the traditional construction of the erhu, a Chinese folk instrument, the bridge is an indispensable component. It plays an important role in fixing the strings, determining the effective string length, and transmitting vibrations. There are many types of erhu bridges available, such as metal-wound bridges and fixed bridges. These bridges meet the basic needs of erhu playing to a certain extent. In order to facilitate the carrying and storage of the erhu, a micro-adjustment bridge with a split design has appeared on the market. This type of bridge is usually composed of two or more independent parts, which are assembled on the neck of the instrument by means of screws, etc. This is mainly to avoid the trouble of completely loosening the strings when disassembling a one-piece bridge, thus improving the convenience of disassembly to a certain extent.

[0003] However, existing modular micro-adjustment jacks still have significant shortcomings in achieving rapid assembly and disassembly. Specifically, the connection between their modular components is often cumbersome, requiring the simultaneous alignment of multiple connectors and the use of tools to tighten auxiliary screws to complete the fixation. This complex assembly process is time-consuming and laborious during practice or performance preparation, and there is a risk of losing small screws during assembly and disassembly. For users who need to frequently assemble and disassemble the jacks, their assembly and disassembly efficiency still needs to be improved.

[0004] Moreover, most existing erhu bridges still use the traditional wire winding method, and practice has proven that the physical properties of the silk thread are not good at filtering and blocking sound. Summary of the Invention

[0005] The purpose of this invention is to provide a plug-in type erhu fine-tuning jack that is easy to install and remove, in order to solve the problems of the existing split fine-tuning jacks, which are not quick and convenient to install and remove, have complicated assembly methods, rely on tools, and have the risk of losing parts, and cannot meet the requirements of efficient disassembly and assembly.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a plug-in type erhu fine-tuning jack that is easy to install and remove, including an assembly bracket, which has an opening on one side and an internal slot for abutting the erhu neck.

[0007] Guide slots are provided on the assembly bracket;

[0008] A movable bracket is movably mounted on the assembly bracket. One side of the movable bracket is provided with a snap-fit ​​part, which cooperates with the guide slot. The movable bracket is provided with a through hole for the strings to pass through.

[0009] A support bracket is located on one side of the erhu neck. The support bracket has a horizontal snap-fit ​​hole inside. After the assembly bracket and the movable bracket cooperate with each other, the support bracket is snapped onto the outer wall of the cooperating assembly bracket and the movable bracket through the snap-fit ​​hole. The snap-fit ​​hole is located at the position where the snap-fit ​​part cooperates with the guide slot.

[0010] The string adjustment assembly is mounted on the support bracket and is used to adjust the pitch of the strings.

[0011] Furthermore, the assembly bracket, movable bracket, and load-bearing bracket are made of ABS plastic steel. The cross-section of the assembly bracket is U-shaped, and the two U-shaped arms of the assembly bracket are elastic.

[0012] Furthermore, the inner wall of the slot is symmetrically provided with anti-slip strips distributed vertically, the inner wall of the anti-slip strips fits into the neck of the erhu, and the guide slot is opened on the U-shaped side wall of the mounting bracket with the opening facing upward.

[0013] Furthermore, the vertical cross-section of the movable bracket is an inverted "L" shape, the snap-fit ​​part is installed at the "L"-shaped end of the movable bracket and extends downward, and the movable bracket and the snap-fit ​​part are integrally formed.

[0014] Furthermore, the vertical cross-section of the snap-fit ​​hole is rectangular, and the through hole transitions into the combined structure of the load-bearing bracket and the movable bracket after assembly.

[0015] Furthermore, the string adjustment assembly includes a threaded adjustment rod, an adjustment dial, and an adjustment cap. A vertical mounting hole is provided above the support bracket. The threaded adjustment rod is connected to the threaded hole on the support bracket. There are two threaded adjustment rods, which are arranged parallel to each other vertically. One end of the threaded adjustment rod extends out of the support bracket away from the erhu neck, and the other end passes through the mounting hole.

[0016] Furthermore, the adjusting turntable is rotatably connected in the mounting hole, the threaded adjusting rod passes through the adjusting turntable and is fixedly connected to it, and the adjusting cap is rotatably installed on the end of the threaded adjusting rod extending out of the support bracket. The adjusting cap is made of rubber material, and a vertical placement groove is provided on the side of the adjusting cap away from the threaded adjusting rod, in which the string is accommodated.

[0017] Furthermore, the support bracket is provided with a vertical observation hole, which is located between the mounting hole and the erhu neck, and the threaded adjusting rod extends into the observation hole through one end of the mounting hole.

[0018] Furthermore, a groove is provided on one side of the mounting hole, which exposes the adjusting turntable portion.

[0019] Compared with existing technologies, the plug-in type erhu fine-tuning jack provided by this invention features an assembly bracket with elastic U-shaped arms. When opened, the bracket engages with the erhu neck, allowing the U-shaped arms to fit together. The movable bracket's locking mechanism engages with the guide slot, and finally, the mounting bracket's locking hole engages with the outer walls of the cooperating assembly and movable brackets. This allows for the installation of the erhu fine-tuning jack through a simple plug-in assembly process, requiring no external tools and lowering the user's operational threshold. Furthermore, it completely eliminates the small screws commonly found in traditional split-type jacks, reducing the risk of screw loss during assembly, disassembly, and transport, thus improving product reliability and user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the plug-in type erhu fine-tuning jack that is easy to install and remove, provided in an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the structure of the erhu fine-tuning jack installed on the erhu neck according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the assembly bracket component structure provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the assembly bracket and movable bracket in a mating state provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the support bracket component provided in an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the support bracket and string adjustment assembly provided in an embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Assembly bracket; 2. Erhu neck; 3. Slot; 4. Guide slot; 5. Movable bracket; 501. Snap-fit ​​part; 6. String; 7. Through hole; 8. Support bracket; 9. Snap-fit ​​hole; 10. Anti-slip strip; 11. Threaded adjustment rod; 12. Adjustment turntable; 13. Adjustment cap; 14. Mounting hole; 1401. Groove part; 15. Placement slot; 16. Observation hole. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] As attached Figure 1 To be continued Figure 5 As shown:

[0031] Example 1:

[0032] The present invention provides a plug-in type erhu fine-tuning jack that is easy to install and remove, including an assembly bracket 1, which has an opening on one side and an internal slot 3 for abutting against the erhu neck 2;

[0033] Guide slot 4 is formed on the assembly bracket 1;

[0034] The movable bracket 5 is movably mounted on the assembly bracket 1. One side of the movable bracket 5 is provided with a snap-fit ​​part 501, which cooperates with the guide slot 4. The movable bracket 5 is provided with a through hole 7 for the string 6 to pass through.

[0035] The support bracket 8 is located on one side of the erhu neck 2. The support bracket 8 has a horizontal snap-fit ​​hole 9 inside. After the assembly bracket 1 and the movable bracket 5 cooperate with each other, the support bracket 8 is snapped onto the outer wall of the cooperating assembly bracket 1 and the movable bracket 5 through the snap-fit ​​hole 9. The snap-fit ​​hole 9 is located at the position where the snap-fit ​​part 501 cooperates with the guide slot 4.

[0036] The string adjustment assembly is installed on the support bracket 8 and is used to adjust the pitch of the string 6.

[0037] It should be noted that: the U-shaped arms of the assembly bracket 1 are elastic. When opened, the slot 3 is engaged with the erhu neck 2, and the U-shaped arms of the assembly bracket 1 fit together. The engaging part 501 on the movable bracket 5 is engaged with the guide slot 4. Finally, the engaging hole 9 on the bearing bracket 8 is engaged with the outer wall of the cooperating assembly bracket 1 and movable bracket 5, thus realizing the installation of the erhu fine-tuning jack. The erhu fine-tuning jack can be assembled by simply plugging it in. The whole process does not require any external tools, which reduces the user's operating threshold. Moreover, it completely eliminates the small screws commonly used in traditional split-type jacks, eliminating the risk of losing screws during loading, unloading and carrying, and improving the reliability of the product and the user experience.

[0038] The shape of the snap-fit ​​hole 9 is adapted to the outer contour of the assembly formed by the assembly bracket 1 and the movable bracket 5. The bearing bracket 8 is made of a material with a certain degree of elasticity (such as ABS plastic steel), so that the snap-fit ​​hole 9 can expand slightly through elastic deformation, thereby fitting and tightly hugging the outer wall of the assembly to achieve a stable connection.

[0039] It should be noted that this invention does not use the traditional method of winding silk thread. The tone produced by finger-pressed notes (positional notes) on the erhu is clear and pure! When playing open strings with the thread wound around the nut, the difference in tone is noticeable. This is because the fingers are flexible, providing excellent filtering and sound-blocking effects. When learning the erhu, teachers instruct that the fingers should press firmly on the strings! This produces a clear, even, and pure tone. This illustrates the difference in physical properties between the quality of the fingers and the quality of the silk thread. If you lightly press your fingers on the nut where it cuts and wraps the string when playing an open string (with slight force), the resulting open string tone will be significantly different! Based on the physical defects of the open string sound caused by the wire-wound bridge, a latex material with similar physical properties to that of the finger for filtering and sound insulation was selected and installed in the string clip at the bridge's string-cutting point (the wire-wound position). When playing the open string, it is as if a finger is constantly pressing on the bridge's string-cutting point to help you play. As a result, the sound of both the inner and outer open strings is significantly improved, eliminating the impure noise of the open string. This greatly enhances and changes the effectiveness of solving the problem of the open string sound effect of the erhu.

[0040] In this embodiment: the assembly bracket 1, the movable bracket 5 and the bearing bracket 8 are made of ABS plastic steel. The cross-section of the assembly bracket 1 is "U" shaped and the two U-shaped arms of the assembly bracket 1 are elastic.

[0041] It should be noted that the use of ABS plastic steel material ensures that the bracket structure has sufficient strength and wear resistance to withstand the long-term tension of the strings 6. On the other hand, this material gives the side arm of the mounting bracket 1 the necessary elasticity, allowing it to undergo elastic deformation and thus smoothly lock onto the erhu neck 2. The rebound force achieves self-locking, ensuring the firmness of the fixation. At the same time, the use of engineering plastics reduces the overall weight, avoids excessive load on the neck, and is easy to mass-produce, resulting in lower costs.

[0042] In this embodiment: anti-slip strips 10 are symmetrically distributed vertically on the inner wall of the slot 3, and the inner wall of the anti-slip strips 10 fits against the erhu neck 2. The guide slot 4 is opened on the U-shaped side wall of the assembly bracket 1 with the opening facing upward.

[0043] It should be noted that the symmetrically arranged upper and lower anti-slip strips 10 increase the contact area and friction between the inner wall of the slot 3 and the surface of the circular erhu neck 2, effectively preventing the jack from sliding or rotating under the tension of the strings 6 or the vibration of playing, thus ensuring the stability of the pitch. The upward-facing design of the guide slot 4 allows the locking part 501 of the movable bracket 5 to be inserted vertically from above. This not only conforms to the habits of manual operation, making alignment and installation easier, but also utilizes gravity to a certain extent to prevent the locking part 501 from accidentally coming out of the slot, improving the safety of the connection.

[0044] In this embodiment: the vertical cross section of the movable bracket 5 is an inverted "L" shape, the snap-fit ​​part 501 is installed at the "L"-shaped end of the movable bracket 5 and extends downward, and the movable bracket 5 and the snap-fit ​​part 501 are integrally formed.

[0045] It should be noted that the inverted "L"-shaped structure provides a natural guiding path for the string 6 to enter the through hole 7 from above, and forms a stable lever arm structure between the force point of the string 6 (through hole 7) and the fixing point (clamping part 501), resulting in a reasonable distribution of force. The clamping part 501 extends downwards, allowing it to be firmly inserted into the guide slot 4 below. The movable bracket 5 and the clamping part 501 are manufactured using an integral molding process, eliminating the connection weaknesses and loosening risks that may exist in traditional welding or screwing, resulting in high structural strength, good dimensional accuracy, and a longer service life for this component.

[0046] In this embodiment: the vertical cross-section of the snap-fit ​​hole 9 is rectangular, and the through hole 7 is in transition fit with the combined structure of the bearing bracket 8 and the movable bracket 5 after assembly.

[0047] It should be noted that the rectangular cross-section locking hole 9, compared to a circular hole, can better restrict the relative movement of the mounting bracket 1 and the movable bracket 5, improving their stability after mating. The through hole 7 and the assembled bracket assembly structure use a transition fit, meaning there is a slight interference or tight fit between them. This ensures that after final tightening, there is no wobbling gap between the movable bracket 5 and the load-bearing bracket 8, forming a rigid integral structure, effectively improving the overall stiffness and stability of the jack under load.

[0048] As attached Figure 1 , 2 As shown in Figure 6:

[0049] Example 2:

[0050] In this embodiment: the string adjustment assembly includes a threaded adjustment rod 11, an adjustment turntable 12, and an adjustment cap 13. A vertical mounting hole 14 is provided above the support bracket 8. The threaded adjustment rod 11 is connected to the threaded hole on the support bracket 8. There are two threaded adjustment rods 11, and they are arranged parallel to each other vertically. One end of the threaded adjustment rod 11 extends out of the support bracket 8 away from the erhu neck 2, and the other end passes through the mounting hole 14.

[0051] It should be noted that the two parallel threaded adjustment rods 11 allow for independent and precise fine-tuning of the pitch of the inner and outer strings 6, without interference between them. This eliminates the inconvenience of traditional jacks requiring overall movement or padding for adjustment. The threaded transmission method is self-locking, ensuring that the pitch will not easily change due to vibration after adjustment, thus improving stability. The rotating connection design makes rotational adjustment very smooth, providing users with a refined and reliable operating experience.

[0052] Specifically: the outer wall of the threaded adjusting rod 11 has external threads, and the interior of the bearing bracket 8 is provided with a threaded hole that matches the threaded adjusting rod 11, forming a nut pair. The threaded adjusting rod 11 is fixedly connected to the adjusting turntable 12. When the adjusting turntable 12 is rotated, since the adjusting turntable 12 is fixedly connected to the threaded adjusting rod 11, the threaded adjusting rod 11 generates axial forward and backward movement inside the bearing bracket 8, thereby driving the adjusting cap 13 at the end to move, thereby achieving tensioning or loosening of the string 6.

[0053] In this embodiment: the adjusting turntable 12 is rotatably connected in the mounting hole 14, the threaded adjusting rod 11 passes through the adjusting turntable 12 and is fixedly connected to it, the adjusting cap 13 is rotatably installed on the end of the threaded adjusting rod 11 extending out of the bearing bracket 8, the adjusting cap 13 is made of rubber, and the side of the adjusting cap 13 away from the threaded adjusting rod 11 is provided with a vertical placement groove 15, and the string 6 is accommodated in the placement groove 15.

[0054] It should be noted that the adjusting turntable 12, as an independent supporting and rotating component, optimizes the force state of the threaded adjusting rod 11, making its rotation smoother. The rubber adjusting cap 13 is soft, and its vertical placement groove 15 can firmly accommodate and clamp the string 6, while avoiding scratches or wear that may be caused by direct contact between metal parts and the string 6, thus providing good protection for the string 6. This design converts the rotational motion of the threaded adjusting rod 11 into the linear motion of the adjusting cap 13, thereby directly and precisely pushing and pulling the string 6, changing its effective vibration length, and achieving fine-tuning of the pitch.

[0055] In this embodiment: the support bracket 8 is provided with a vertical observation hole 16, the observation hole 16 is located between the mounting hole 14 and the erhu neck 2, and the threaded adjustment rod 11 extends from one end through the mounting hole 14 into the observation hole 16.

[0056] It should be noted that the design of the observation hole 16 allows users to directly see the end portion of the threaded adjustment rod 11 extending into the support bracket 8. This provides an intuitive visual reference, allowing users to judge the approximate travel of the current fine adjustment and whether the adjustment amount of the two strings 6 is balanced based on the depth of the threaded rod's insertion. This facilitates the adjustment process, avoids blind operation, and improves the accuracy and efficiency of tuning.

[0057] In this embodiment: a groove 1401 is provided on one side of the mounting hole 14, and the groove 1401 exposes part of the adjusting turntable 12.

[0058] It should be noted that the recessed portion 1401 exposes part of the peripheral area of ​​the adjustment dial 12, providing the user with operating space to directly pinch and rotate the adjustment dial 12 with their fingers. Compared to designs that require the use of tools for adjustment, this direct finger operation method is more convenient and faster, and avoids potential scratches to the parts caused by tools, thus improving the user experience and ease of use of the product.

[0059] The operating method of this invention:

[0060] Step 1: Install and assemble bracket 1

[0061] Positioning and installation: Determine the approximate height at which the jack will be installed on the neck 2 of the erhu.

[0062] Open assembly bracket 1: Pinch the open ends of the U-shaped arms of assembly bracket 1 with your hands and gently apply force outward to expand the opening by utilizing the elasticity of the material.

[0063] Inserting the neck: Place the opened slot 3 onto the erhu neck 2 from the side, and then slowly release your hands so that the mounting bracket 1 can tightly hug the neck by its own elastic rebound force. At this time, ensure that the upper and lower anti-slip strips 10 in the slot 3 are completely in contact with the surface of the neck to prevent slippage later. The guide slot 4 on the mounting bracket 1 should face upward.

[0064] Step 2: Install the movable bracket 5

[0065] Align the slot: Pick up the movable bracket 5 and align its short side (i.e. the end with the downward-extending snap-fit ​​portion 501) with the guide slot 4 above the mounting bracket 1.

[0066] Vertical insertion: Insert the snap-fit ​​part 501 of the movable bracket 5 vertically downwards along the guide slot 4 until the snap-fit ​​part 501 is fully inserted into place and the movable bracket 5 fits tightly against the mounting bracket 1. You may hear a slight "click" sound, indicating that the snap-fit ​​part 501 has been locked in place.

[0067] Step 3: Install the support bracket 8

[0068] Passing through the strings 6: Pass the inner and outer strings 6 of the erhu through the through hole 7 above the movable support 5.

[0069] Tighten the overall structure: Align the transverse locking hole 9 on the inner side of the support bracket 8 with the combined structure formed by the mating bracket 1 and the movable bracket 5. Then, gently push the support bracket 8 towards the neck of the instrument by hand, so that the locking hole 9 is completely locked onto the outer wall of the mating bracket 1 and the movable bracket 5. At this point, the main body of the entire fine-tuning jack has formed a rigid whole, and the installation is complete.

[0070] Step 4: Place string 6 into the adjustment assembly

[0071] The inner and outer strings, which are drawn out from the through hole 7 in the previous step, are placed into the vertical placement slots 15 of the upper and lower adjustment caps 13 respectively. The strings 6 should be placed naturally in the rubber placement slots 15, which can prevent the strings 6 from sliding and avoid the metal parts from scratching the strings 6.

[0072] Step 5: Fine-tune the pitch

[0073] Preliminary tuning: First, just like using a traditional tuning peg, make a rough adjustment by rotating the tuning pegs to adjust the pitch of the two strings to be close to the standard pitch.

[0074] Fine-tuning:

[0075] When the pitch needs to be raised: rotate the corresponding adjustment dial 12 counterclockwise. At this time, the threaded adjustment rod 11 will drive the adjustment cap 13 to move away from the neck of the instrument (backward), thereby tightening the string 6 and raising the pitch.

[0076] To lower the pitch: Rotate the corresponding adjustment dial 12 clockwise. At this time, the adjustment cap 13 will move towards the neck (forward), loosening the string 6 and lowering the pitch.

[0077] Observation and calibration: During the adjustment process, you can observe the movement of the threaded adjustment rod 11 through the observation hole 16 on the support bracket 8 as a visual reference for the adjustment amount. Adjust the upper and lower fine tuners respectively until both the inner and outer strings reach the accurate standard pitch.

[0078] Disassembly steps:

[0079] When it is necessary to disassemble this fine-tuning jack, please proceed in the reverse order of installation: gently pull the support bracket 8 off the main structure, pull the movable bracket 5 vertically upward from the guide slot 4 of the assembly bracket 1, and pinch the U-shaped side arm of the assembly bracket 1 open by hand to remove it from the erhu neck 2.

[0080] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A card-type, easily detachable erhu fine-tuning jack, characterized in that: include: The mounting bracket (1) has an opening on one side and an internal slot (3) for attaching to the neck of the erhu (2); A guide slot (4) is provided on the assembly bracket (1); The movable bracket (5) is movably mounted on the assembly bracket (1). A snap-fit ​​part (501) is provided on one side of the movable bracket (5). The snap-fit ​​part (501) cooperates with the guide slot (4). The movable bracket (5) is provided with a through hole (7) for the string (6) to pass through. The support bracket (8) is located on one side of the erhu neck (2). The support bracket (8) has a horizontal snap-fit ​​hole (9) inside. After the assembly bracket (1) and the movable bracket (5) cooperate with each other, the support bracket (8) is snapped onto the outer wall of the cooperating assembly bracket (1) and the movable bracket (5) through the snap-fit ​​hole (9). The snap-fit ​​hole (9) is located at the position where the snap-fit ​​part (501) and the guide slot (4) cooperate. The string adjustment assembly is installed on the support bracket (8) and is used to adjust the pitch of the string (6).

2. The plug-in type easily detachable erhu fine-tuning jack according to claim 1, characterized in that, The assembly bracket (1), movable bracket (5) and bearing bracket (8) are made of ABS plastic steel. The cross-section of the assembly bracket (1) is "U" shaped, and the two U-shaped arms of the assembly bracket (1) are elastic.

3. The plug-in type erhu fine-tuning jack for easy loading and unloading as described in claim 1, characterized in that, The inner wall of the slot (3) is symmetrically provided with anti-slip strips (10) distributed vertically. The inner wall of the anti-slip strips (10) fits against the erhu neck (2). The guide slot (4) is opened on the U-shaped side wall of the assembly bracket (1) with the opening facing upward.

4. The plug-in type easily detachable erhu fine-tuning jack according to claim 1, characterized in that, The vertical cross section of the movable bracket (5) is an inverted "L" shape. The snap-fit ​​part (501) is installed at the "L"-shaped end of the movable bracket (5) and extends downward. The movable bracket (5) and the snap-fit ​​part (501) are integrally formed.

5. The plug-in type easily detachable erhu fine-tuning jack according to claim 1, characterized in that, The vertical cross-section of the snap-fit ​​hole (9) is rectangular, and the through hole (7) is in transition fit with the combined structure of the bearing bracket (8) and the movable bracket (5) after assembly.

6. The plug-in type easily detachable erhu fine-tuning jack according to claim 1, characterized in that, The string adjustment assembly includes a threaded adjustment rod (11), an adjustment dial (12), and an adjustment cap (13). A vertical mounting hole (14) is provided above the support bracket (8). The threaded adjustment rod (11) is connected to the threaded hole on the support bracket (8). There are two threaded adjustment rods (11) and they are arranged parallel to each other vertically. One end of the threaded adjustment rod (11) extends out of the support bracket (8) away from the erhu neck (2), and the other end passes through the mounting hole (14).

7. The plug-in type easily detachable erhu fine-tuning jack according to claim 6, characterized in that, The adjusting turntable (12) is rotatably connected in the mounting hole (14), the threaded adjusting rod (11) passes through the adjusting turntable (12) and is fixedly connected to it, the adjusting cap (13) is rotatably installed on the end of the threaded adjusting rod (11) extending out of the support bracket (8), the adjusting cap (13) is made of rubber, and the adjusting cap (13) has a vertical placement groove (15) on the side away from the threaded adjusting rod (11), and the string (6) is accommodated in the placement groove (15).

8. The plug-in type easily detachable erhu fine-tuning jack according to claim 7, characterized in that, The support bracket (8) is provided with a vertical observation hole (16), which is located between the mounting hole (14) and the erhu neck (2). The threaded adjustment rod (11) extends from one end through the mounting hole (14) into the observation hole (16).

9. The plug-in type easily detachable erhu fine-tuning jack according to claim 8, characterized in that, A groove (1401) is provided on one side of the mounting hole (14), and the groove (1401) exposes part of the adjusting turntable (12).

Images