Pipa string tightening device

Abstract

The utility model provides a pipa string tightening device, which relates to the technical field of musical instruments and comprises a panel, a beat string is fixed on the front side of the panel close to the bottom edge, a plurality of string wires are arranged in front of the panel at equal intervals, one end of each string wire is correspondingly fixed on one side of the beat string, and the other end of each string wire is fixed on the other side of the beat string. According to the utility model, the inner walls of the guide sleeves and the outer surface of the tuning peg are respectively provided with a spiral arc channel, and the spiral arc channels on the inner walls of the guide sleeves are opposite to the spiral arc channels on the outer surface of the tuning peg. The string wire in the guide sleeve is inserted into the two opposite spiral arc channels, so that one end of the string wire can be wound along the spiral arc channels when the string shaft is rotated to tighten the string wire, the constraining force on the end part of the string wire is improved, the sliding phenomenon is prevented, and the service life of the string wire is prolonged. And meanwhile, the end part of the string wire is prevented from deviating due to the fact that the string wire is wound and arranged on the string shaft in a single turn and moves towards one side.

Description

TECHNICAL FIELD

[0001] The utility model relates to musical instrument technical field especially relates to a pipa tight string device. BACKGROUND

[0002] Pipa is a traditional plucked string instrument in China, and has a history of more than two thousand years. It first appeared in the Qin Dynasty. Pipa is composed of a head and a body. The head includes string grooves, string shafts, and mountain mouths. The body includes phase, pitch, sound box, and overhand parts. The pipa needs to adjust the tightness of the string by twisting the string shaft to change the pitch and adjust the pitch accuracy.

[0003] Currently, when adjusting the string of the pipa, the string needs to be wound on the string shaft, and the tightness of the string is adjusted by rotating the string shaft. During the process of winding the string on the string shaft, the single turn of the string wound on the string shaft moves to one side, which causes the string end to deviate and easily slide sideways, resulting in the phenomenon of sound. INVENTION CONTENTS

[0004] The utility model discloses a pipa tight string device to solve the prior art problems.

[0005] To solve the above technical problems, the basic idea of the technical scheme adopted by the utility model is:

[0006] A pipa tight string device, comprising a panel, a front side of the panel is fixed with a string near a bottom edge, a plurality of string wires are equidistantly arranged in front of the panel, one end of each of the plurality of string wires is correspondingly fixed on one side of the string, a plurality of guide sleeve pipes are equidistantly fixed on the front side of the panel near a top edge, a string shaft is arranged in each of the plurality of guide sleeve pipes, the other end of each of the plurality of string wires is correspondingly penetrated into the inside of the guide sleeve pipe and wound on the string shaft.

[0007] Optionally, an internal thread ring is fixed between the inner walls of the guide sleeve pipe near the bottom edge, and the outer surface of the string shaft is threadedly connected with the internal thread ring near the bottom edge.

[0008] Optionally, a scale bar is arranged on the top of the guide sleeve pipe near the two side edges, and a notch is correspondingly arranged on the top of the guide sleeve pipe and the top of the string shaft.

[0009] Optionally, a spiral arc is arranged on the inner wall of the guide sleeve pipe and the outer surface of the string shaft, the two spiral arcs are opposite, and the string in the guide sleeve pipe is inserted into the inside of the spiral arc.

[0010] Optionally, a side opening is arranged in the inside of the string shaft, one end of the side opening is penetrated into the top of the spiral arc and communicates with the spiral arc.

[0011] Optionally, one end of the string wire extends to the inside of the side opening, a receiving groove is formed on the top surface of the inside of the side opening, and a pressing plate is arranged in the inside of the receiving groove.

[0012] Optionally, a hexagonal groove is formed on the top of the string shaft, a bottom groove is formed on the bottom surface of the inside of the hexagonal groove, a pressing bolt is arranged in the inside of the bottom groove, the bottom of the pressing bolt is screwed into the inside of the receiving groove, and the top of the pressing bolt is rotatably connected with the pressing plate.

[0013] The utility model discloses beneficial effect lies in:

[0014] 1. In the utility model, the inner wall of guide sleeve pipe and the outer surface of string shaft are all provided with spiral arc, and the spiral arc on the inner wall of guide sleeve pipe and the spiral arc on the outer surface of string shaft are opposite, the string wire in the inside of guide sleeve pipe is inserted in the inside of two opposite spiral arcs, so that when the string wire is tightened by rotating the string shaft, one end of the string wire can be wound along the spiral arc, the constraint force on the end of the string wire is improved, the sliding phenomenon is prevented, and the single-turn winding of the string wire on the string shaft is prevented from moving to one side, which can cause the end of the string wire to deviate.

[0015] 2. In the utility model, when the string wire is inserted in the inside of two spiral arcs, one end of the string wire is inserted into the inside of the side opening, then the pressing bolt is rotated to drive the pressing plate to press down to the inside of the side opening, so that the end of the string wire is pressed in the inside of the side opening, the end of the string wire is prevented from slipping off when the string shaft is rotated, before the pressing bolt is rotated, the external clamping plate is used to clamp the side opening at the top of the guide sleeve pipe and the string shaft, so that the string shaft is prevented from rotating when the pressing bolt is rotated, and the scale bar is arranged at the top of the guide sleeve pipe, so that the rotating angle of the string shaft can be observed when the string shaft is rotated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A front view of the utility model is provided, which is a schematic diagram of the three-dimensional structure of the string tightening device of the pipa;

[0017] Figure 2 A front view of the utility model is provided, which is a schematic diagram of the three-dimensional structure of the guide sleeve pipe of the string tightening device of the pipa;

[0018] Figure 3 A front view of the utility model is provided, which is a schematic diagram of the three-dimensional structure of the guide sleeve pipe and the string shaft of the string tightening device of the pipa;

[0019] Figure 4 An internal structure sectional view of the guide sleeve pipe and the string shaft of the string tightening device of the utility model is provided.

[0020] In the diagram: 1. Panel; 2. String; 3. String wire; 4. Guide sleeve; 5. String pin; 6. Scale bar; 7. Reverse joint; 8. Hexagonal groove; 9. Spiral arc; 10. Side opening; 11. Bottom groove; 12. Storage groove; 13. Pressure plate; 14. Pressure bolt; 15. Internal threaded ring. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings.

[0022] Example 1, such as Figures 1-4 As shown, this utility model provides a technical solution for a pipa string tightening device: it includes a panel 1, a string 2 is fixed at the front side of the panel 1 near the bottom edge, a plurality of string wires 3 are equidistantly arranged at the front of the panel 1, one end of each string wire 3 is fixed to one side of the string 2, a plurality of guide tubes 4 are equidistantly fixed at the front side of the panel 1 near the top edge, a tuning peg 5 is arranged inside each of the multiple guide tubes 4, and the other end of each string wire 3 passes through the inside of the guide tube 4 and is wound around the tuning peg 5.

[0023] The effect achieved by the entire embodiment 1 is that, in actual use, spiral arc tracks 9 are opened on the inner wall of the guide sleeve 4 and the outer surface of the string shaft 5. The spiral arc tracks 9 on the inner wall of the guide sleeve 4 and the spiral arc tracks 9 on the outer surface of the string shaft 5 are aligned, so that the string wire 3 located inside the guide sleeve 4 is inserted into the two opposing spiral arc tracks 9. Thus, when the string shaft 5 is rotated to tighten the string wire 3, one end of the string wire 3 can be wound along the spiral arc track 9, which improves the constraint force on the end of the string wire 3 and prevents slippage. At the same time, it avoids the string wire 3 from moving to one side when it is wrapped in a single turn on the string shaft 5, which would cause the end of the string wire 3 to deviate.

[0024] Example 2, as Figures 1-4 As shown, an internal threaded ring 15 is fixed between the inner walls of the guide sleeve 4 and near the bottom edge. The outer surface of the chord shaft 5 is threadedly connected to the internal threaded ring 15 near the bottom edge. Scale strips 6 are provided on the top of the guide sleeve 4 near both sides. A bevel 7 is correspondingly provided on the top of the guide sleeve 4 and the top of the chord shaft 5. A spiral arc 9 is provided on the inner wall of the guide sleeve 4 and the outer surface of the chord shaft 5. The two spiral arc 9s are opposite each other. The string wire 3 inside the guide sleeve 4 is inserted inside the spiral arc 9. A side opening is provided inside the chord shaft 5. 10. One end of the side opening 10 extends through to the top of the spiral arc 9 and is connected to the spiral arc 9. One end of the string wire 3 extends into the interior of the side opening 10. A storage groove 12 is provided on the top surface of the interior of the side opening 10. A pressure plate 13 is provided inside the storage groove 12. A hexagonal groove 8 is provided on the top of the string pin 5. A bottom groove 11 is provided on the bottom surface of the hexagonal groove 8. A pressure bolt 14 is provided inside the bottom groove 11. The bottom thread of the pressure bolt 14 extends into the interior of the storage groove 12 and is rotatably connected to the top of the pressure plate 13.

[0025] The effect achieved by the whole embodiment 2 is that when the string 3 is inserted into the two spiral channels 9, one end of the string 3 is inserted into the side opening 10, and then the pressing screw 14 is rotated to drive the pressing plate 13 to press into the side opening 10, thereby pressing the end of the string 3 in the side opening 10, preventing the end of the string 3 from slipping when the string shaft 5 is rotated. Before rotating the pressing screw 14, an external clamping plate is used to constrain and clamp the guide sleeve 4 and the notch 7 at the top of the string shaft 5, to prevent the string shaft 5 from rotating when the pressing screw 14 is rotated. At the same time, the scale bar 6 is arranged at the top of the guide sleeve 4, so that the rotation angle of the string shaft 5 can be observed when it is rotated.

[0026] Working principle: The inner wall of the guide sleeve 4 and the outer surface of the string shaft 5 are provided with spiral channels 9, and the spiral channels 9 on the inner wall of the guide sleeve 4 and the spiral channels 9 on the outer surface of the string shaft 5 are opposite to each other. The string 3 located in the guide sleeve 4 is inserted into the two opposite spiral channels 9, so that when the string 3 is tightened by rotating the string shaft 5, one end of the string 3 can be wound along the spiral channel 9, improving the restraint force on the end of the string 3 and preventing sliding. At the same time, it avoids the phenomenon that the single-turn string 3 arranged on the string shaft 5 moves to one side, which causes the end of the string 3 to deviate. When the string 3 is inserted into the two spiral channels 9, one end of the string 3 is inserted into the side opening 10, and then the pressing screw 14 is rotated to drive the pressing plate 13 to press into the side opening 10, thereby pressing the end of the string 3 in the side opening 10, preventing the end of the string 3 from slipping when the string shaft 5 is rotated. Before rotating the pressing screw 14, an external clamping plate is used to constrain and clamp the guide sleeve 4 and the notch 7 at the top of the string shaft 5, to prevent the string shaft 5 from rotating when the pressing screw 14 is rotated. At the same time, the scale bar 6 is arranged at the top of the guide sleeve 4, so that the rotation angle of the string shaft 5 can be observed when it is rotated.

Claims

1. A pipa string tightening device, comprising a soundboard (1), characterized in that: A clapper (2) is fixed at the bottom edge of the front side of the panel (1). Multiple string wires (3) are equidistantly arranged at the front of the panel (1). One end of each string wire (3) is fixed to one side of the clapper (2). Multiple guide tubes (4) are equidistantly fixed at the top edge of the front side of the panel (1). A tuning peg (5) is provided inside each of the multiple guide tubes (4). The other end of each string wire (3) passes through the inside of the guide tube (4) and is wound around the tuning peg (5).

2. The pipa string tightening device according to claim 1, characterized in that: An internal threaded ring (15) is fixed between the inner walls of the guide sleeve (4) near the bottom edge, and the outer surface of the chord shaft (5) is threadedly connected to the internal threaded ring (15) near the bottom edge.

3. A pipa string tightening device according to claim 2, characterized in that: The top of the guide sleeve (4) is provided with scale strips (6) near the two side edges, and the top of the guide sleeve (4) and the top of the chord shaft (5) are respectively provided with bevels (7).

4. A pipa string tightening device according to claim 3, characterized in that: The inner wall of the guide sleeve (4) and the outer surface of the chord shaft (5) are both provided with spiral arc channels (9). The two spiral arc channels (9) are opposite to each other, and the chord wire (3) inside the guide sleeve (4) is inserted inside the spiral arc channel (9).

5. A pipa string tightening device according to claim 4, characterized in that: The chord axis (5) has a side opening (10) inside, one end of which extends through to the top of the spiral arc (9) and is connected to the spiral arc (9).

6. A pipa string tightening device according to claim 5, characterized in that: One end of the string (3) extends into the interior of the side opening (10), and a storage groove (12) is provided on the top surface of the interior of the side opening (10), and a pressing plate (13) is provided inside the storage groove (12).

7. A pipa string tightening device according to claim 6, characterized in that: The top of the chord shaft (5) is provided with a hexagonal groove (8), and the bottom surface of the hexagonal groove (8) is provided with a bottom groove (11). A clamping bolt (14) is provided inside the bottom groove (11). The bottom thread of the clamping bolt (14) extends into the inside of the receiving groove (12) and is rotatably connected to the top of the clamping plate (13).

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