Erhu

Abstract

The erhu comprises a head, a rod, a cylinder, a support, a tuning peg, a nut, strings and a bridge, the rod comprises a main rod and an auxiliary rod, the main rod is not in contact with the cylinder, a vibration-assisting beam is arranged between the main rod and the auxiliary rod, and the central axis of the vibration-assisting beam is located on the surface where the central axis of the cylinder is located. An original instrument rod structure is changed, the instrument rod is divided into an upper section and a lower section which are staggered, the auxiliary instrument rod is moved to the position close to the sound window, meanwhile, the vibration assisting beam is additionally arranged, the distance between the instrument rod and the instrument skin is enlarged, and compared with a traditional instrument rod structure, the elasticity of the instrument rod is further improved; the vibration of the strings is transmitted to the skin through the bridge, and is also transmitted to the main rod, the vibration-assisting beam and the auxiliary rod, and the elasticity of the rods is increased, so that the vibration effect of the rods is improved, resonance is further formed with the cylinder, and the sound volume of the erhu is increased.

Description

Technical Field

[0001] The invention relates to the field of musical instruments, and in particular to an erhu. Background Art

[0002] Erhu, as a treasure among traditional Chinese musical instruments, is loved by music lovers and professional performers for its unique timbre and expressiveness. The structure of the traditional erhu mainly includes key components such as the sound box, the neck, the strings, the bridge and the skin. Among them, the neck is an important bridge connecting the strings and the sound box, and its structural design directly affects the sound quality and volume of the erhu.

[0003] The traditional erhu pole design usually adopts a single long pole structure, which is directly inserted into the bottom of the sound box. Although this design is simple, the pole lacks elasticity and has certain limitations in vibration transmission and resonance. As a result, during the performance, the vibration energy of the strings is mainly transmitted to the sound box through the bridge, thereby stimulating the resonance of the sound box. This single vibration transmission path limits the increase in the volume of the erhu and the richness of the timbre. Especially when it is necessary to express high-pitched, passionate or deep and distant musical emotions, the traditional pole structure often seems to be unable to do so.

[0004] In order to overcome the above-mentioned technical defects and improve the performance and expressiveness of the erhu, how to improve the transmission efficiency and resonance range of the string vibration energy is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The object of the present invention is to provide an erhu that solves the above-mentioned problems.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A kind of erhu, comprising a head, a neck, a sound box, a nut, pegs, a nut, strings and bridges, the neck comprising a main neck perpendicular to the sound box and an auxiliary neck arranged below the main neck, the main neck being arranged at a position close to the sound skin of the sound box, and the auxiliary neck being arranged at a position close to the sound window of the sound box; the main neck is not in contact with the sound box, one end of the auxiliary neck is connected to the inside of the sound box, a vibration-assisting beam is arranged between the main neck and the auxiliary neck, two ends of the vibration-assisting beam are respectively connected to the bottom of the main neck and the top of the auxiliary neck, and the central axis of the vibration-assisting beam is located on the plane where the central axis of the sound box is located.

[0008] Preferably, the main piano bar and the vibration-assisting beam are both arranged above the sound box, the top of the auxiliary piano bar extends out of the sound box and is connected to the vibration-assisting beam, and gaps are provided between the main piano bar and the sound box, and between the vibration-assisting beam and the sound box.

[0009] Preferably, the material of the vibration-assisting beam is wood, and the vibration-assisting beam includes a thickened portion, a central portion and a tail portion, the thickened portion is arranged on a side close to the main piano bar, the tail portion is arranged on a side close to the auxiliary piano bar, and the central portion is arranged between the thickened portion and the tail portion, the thickness of the thickened portion decreases from a side close to the main piano bar to a side close to the central portion, and a slope inclined toward the central portion is arranged on the top of the thickened portion.

[0010] Preferably, a first plug block is provided on the side of the thickened portion close to the main piano bar, and the main piano bar is provided with a first slot matching the first plug block; a second slot is provided on the side of the tail portion close to the auxiliary piano bar, and a second plug block matching the second slot is provided on the top of the auxiliary piano bar.

[0011] Preferably, a screw penetrates the main piano bar and is connected to the vibration-assisting beam, the screw is tilted downward, and the rod of the screw passes through the center position of the main piano bar, the first plug block, and one side of the thickened portion to the center position of the central portion.

[0012] Preferably, a countersunk hole for the screw to be connected is formed inside the main guitar bar, and a plug for sealing the countersunk hole is provided inside the countersunk hole.

[0013] Preferably, the bottom of the main piano bar, the vibration-assisting beam and the auxiliary piano bar are all arranged inside the piano body.

[0014] Preferably, the vibration-assisting beam is made of elastic metal material and is a plate. Sleeves are respectively provided at two ends of the vibration-assisting beam. The sleeves are respectively sleeved on the bottom of the main piano bar and the top of the auxiliary piano bar. The sleeves are interference fit with the main piano bar and the auxiliary piano bar.

[0015] Preferably, the thickness of the vibration-assisting beam is 2-3 mm.

[0016] Preferably, the distance between the main piano bar and the auxiliary piano bar is greater than or equal to 2 cm, and the gap height between the main piano bar and the sound box is 0.5 mm-2 mm.

[0017] The beneficial effects of the present invention are as follows: the present invention changes the original neck structure, divides the neck into two staggered upper and lower sections, moves the auxiliary neck bar to a position close to the sound window, and adds a vibration-assisting beam to expand the distance between the neck bar and the instrument skin. Compared with the traditional neck structure, the present invention further improves the elasticity of the neck bar. When the strings are vibrated, the vibration of the strings is not only transmitted to the instrument skin through the bridge, but also transmitted to the main neck bar, the vibration-assisting beam and the auxiliary neck bar. Since the elasticity of the neck bar is increased, the vibration effect of the neck bar is improved, further resonating with the instrument body, thereby increasing the volume of the erhu sound. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of one embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A is a schematic diagram of the partially enlarged structure of the middle part;

[0020] Figure 3 It is a structural schematic diagram of one embodiment of the present invention;

[0021] Figure 4 yes Figure 3 A schematic diagram of the partially enlarged structure of B in the middle;

[0022] Figure 5 It is a structural schematic diagram of one embodiment of the present invention;

[0023] Among them, there are the headstock 1, the neck 2, the sound box 3, the support 4, the pegs 5, the nut 6, the strings 7, the bridge 8, the bow 9, the main neck 10, the auxiliary neck 11, the piano skin 12, the sound window 13, the vibration-aiding beam 14, the thickened part 15, the center part 16, the tail part 17, the first plug 18, the first slot 19, the second slot 20, the second plug 21, the screw 22, the countersunk hole 23, the plug 24, and the sleeve 25. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0025] In the description of the present invention, it should be noted that the terms "inside", "outside", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] like Figures 1 to 5As shown, the present invention provides an erhu, which includes a head 1, a neck 2, a sound box 3, a support 4, a peg 5, a nut 6, a string 7, a bridge 8 and a bow 9. The neck 2 includes a main neck 10 and an auxiliary neck 11 vertical to the sound box 3, and the auxiliary neck 11 is arranged below the main neck 10. The main neck 10 is arranged at a position close to the sound skin 12 of the sound box 3, and the auxiliary neck 11 is arranged at a position close to the sound window 13 of the sound box 3. The main neck 10 does not contact the sound box 3, and one end of the auxiliary neck 11 is connected to the inside of the sound box 3. A vibration-enhancing beam 14 is arranged between the main neck 10 and the auxiliary neck 11, and the two ends of the vibration-enhancing beam 14 are respectively connected to one side of the bottom of the main neck 10 and the top of the auxiliary neck 11, and the central axis of the vibration-enhancing beam 14 is located on the plane where the central axis of the sound box 3 is located. The spacing between the main neck 10 and the auxiliary neck 11 of the present invention is greater than or equal to 2 cm.

[0027] The principle of the present invention is: by changing the original structure of the neck 2, the neck 2 is divided into two staggered upper and lower sections, the auxiliary neck 11 is moved to a position close to the sound window 11, and at the same time, a vibration-assisting beam 14 is added to expand the distance between the neck 2 and the piano skin 12. Compared with the traditional neck 2 structure, the present invention further improves the elasticity of the neck 2. When the strings 7 are vibrated, the vibration of the strings 7 is not only transmitted to the piano skin 12 through the bridge 8, but also transmitted to the main neck 10, the vibration-assisting beam 14 and the auxiliary neck 11. Since the elasticity of the neck 2 is increased, the vibration effect of the neck 2 is improved, and further resonance is formed with the piano body 3, thereby increasing the volume of the erhu sound.

[0028] There are many embodiments of the installation method and structure of the piano bar 2 and the vibration-assisting beam 14 of the present invention, one of which is:

[0029] The main piano bar 10 and the vibration-assisting beam 14 are both arranged above the sound box 3. The top of the auxiliary piano bar 11 extends out of the sound box 3 and is connected to the vibration-assisting beam 14. Gaps are arranged between the main piano bar 10 and the sound box 3, and between the vibration-assisting beam 14 and the sound box 3. Among them, the gap height between the main piano bar 10 and the sound box 3 is 0.5-2mm, preferably 0.5-1mm. The vibration-assisting beam 14 is made of wood, and the vibration-assisting beam 14 includes a thickened portion 15, a central portion 16 and a tail portion 17. The thickened portion 15 is arranged on a side close to the main piano bar 10, the tail portion 17 is arranged on a side close to the auxiliary piano bar 11, and the central portion 16 is arranged between the thickened portion 15 and the tail portion 17. The thickness of the thickened portion 15 is greater than the thickness of the central portion 16, and the thickness of the thickened portion 15 decreases from the side close to the main piano bar 10 to the side close to the central portion 16. The top of the thickened portion 15 is provided with an inclined surface inclined toward the central portion 16. A first plug block 18 is provided on the side of the thickened portion 15 close to the main piano bar 10, and a first slot 19 is provided on the main piano bar 10 to match the first plug block 18. A second slot 20 is provided on the side of the tail portion 17 close to the auxiliary piano bar 11, and a second plug block 21 is provided on the top of the auxiliary piano bar 11 to match the second slot 20. When connecting the vibration-assisting beam 14 to the main piano bar 10 and the auxiliary piano bar 11, the first plug block 18 on the vibration-assisting beam 14 can be inserted into the first slot 19 of the main piano bar 10, and the second plug block 21 on the auxiliary piano bar 11 can be inserted into the second slot 20 of the vibration-assisting beam 14 to preliminarily connect the vibration-assisting beam to the main piano bar 10 and the auxiliary piano bar 11. The screw 22 penetrates the main piano bar 10 and is connected to the vibration-assisting beam 14, and the screw 22 is tilted downward, and the rod of the screw 22 passes through the center position of the main piano bar 10, the first plug block 18, and one side of the thickened portion 15 to the center position of the center portion 16. When the screw 22 is connected, it will pass through one side of the main piano bar, forming a countersunk hole 23 inside the main piano bar, and a plug 24 for blocking the countersunk hole 23 is provided inside the countersunk hole 23, so that the surface of the entire upper piano bar 10 is smoother. After installing the plug 24, the surface can be painted to make the upper piano bar 10 more beautiful. The present invention is more conducive to the connection of the screw 22 by setting the thickness variation of the thickened portion 15, so that when the screw 22 is connected, the rod of the screw 22 is located at the center of the thickened portion 15, so that the connection between the main piano bar 10 and the vibration-assisting beam 14 is more stable, and the bottom of the main piano bar 10 is prevented from separating from the vibration-assisting beam 14.

[0030] Another embodiment of the installation method and structure of the piano bar 2 and the vibration-assisting beam 14 of the present invention is:

[0031] The main piano bar 10 and the vibration-assisting beam 14 are both arranged above the sound box 3, the top of the auxiliary piano bar 11 extends out of the sound box 3 and is connected to the vibration-assisting beam 14, and gaps are arranged between the main piano bar 10 and the sound box 3, and between the vibration-assisting beam 14 and the sound box 3. Among them, the gap height between the main piano bar 10 and the sound box 3 is 0.5-2mm, preferably 0.5-1mm. The vibration-assisting beam 14 is made of elastic metal material, such as steel material. Among them, the vibration-assisting beam 14 is a plate body with a thickness of 2-3mm. The two ends of the vibration-assisting beam 14 are respectively provided with sleeves 25, and the sleeves 25 are respectively sleeved on the bottom of the main piano bar 10 and the top of the auxiliary piano bar 11, and the sleeves 25 are interference-fitted with the main piano bar 10 and the auxiliary piano bar 11. The present invention can use a steel plate as the vibration-assisting beam 14, which is convenient for transmitting the vibration brought by the strings 7. The elasticity of the piano bar 2 is increased, so that the vibration transmitted by the strings is increased, and the piano bar 2 resonates with the sound box 3, which increases the volume of the erhu sound.

[0032] Another embodiment of the installation method and structure of the piano bar 2 and the vibration-assisting beam 14 of the present invention is:

[0033] The bottom of the main qin bar 10, the vibration-assisting beam 14 and the auxiliary qin bar 11 are all arranged inside the sound box 3. Among them, a through hole is provided on the top of the sound box 3 to allow the bottom of the main qin bar 10 to penetrate into the sound box 3, and the main qin bar 10 does not contact the sound box 3. The vibration-assisting beam 14 is made of elastic metal material, such as steel material. Among them, the vibration-assisting beam 14 is a plate body with a thickness of 2-3mm. The two ends of the vibration-assisting beam 14 are respectively provided with sleeves 25, and the sleeves 25 are respectively sleeved on the bottom of the main qin bar 10 and the top of the auxiliary qin bar 11, and the sleeves 25 are interference fit with the main qin bar 10 and the auxiliary qin bar 11. The present invention can use a steel plate as the vibration-assisting beam 14, which is convenient for transmitting the vibration brought by the strings 7. Since the elasticity of the qin bar 2 is increased, the vibration transmitted by the strings 7 is increased, and the qin bar 2 resonates with the sound box 3, thereby increasing the volume of the erhu sound.

[0034] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0035] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An erhu, comprising a headstock, a neck, a sound box, a support, pegs, a string, strings and a bridge, characterized in that: The piano bar includes a main piano bar vertical to the piano tube and an auxiliary piano bar arranged below the main piano bar, the main piano bar is arranged at a position close to the piano skin of the piano tube, and the auxiliary piano bar is arranged at a position close to the sound window of the piano tube; The main piano bar does not contact the sound box, one end of the auxiliary piano bar is connected to the inside of the sound box, a vibration-assisting beam is arranged between the main piano bar and the auxiliary piano bar, two ends of the vibration-assisting beam are respectively connected to the bottom of the main piano bar and the top of the auxiliary piano bar, and the central axis of the vibration-assisting beam is located on the plane where the central axis of the sound box is located.

2. The erhu according to claim 1, characterized in that: The main piano bar and the vibration-assisting beam are both arranged above the sound box, the top of the auxiliary piano bar extends out of the sound box and is connected to the vibration-assisting beam, and gaps are arranged between the main piano bar and the sound box, and between the vibration-assisting beam and the sound box.

3. The erhu according to claim 2, characterized in that: The material of the vibration-assisting beam is wood, and the vibration-assisting beam includes a thickened portion, a central portion and a tail portion. The thickened portion is arranged on a side close to the main piano bar, the tail portion is arranged on a side close to the auxiliary piano bar, and the central portion is arranged between the thickened portion and the tail portion. The thickness of the thickened portion decreases from a side close to the main piano bar to a side close to the central portion, and a slope inclined toward the central portion is arranged on the top of the thickened portion.

4. The erhu according to claim 3, characterized in that: A first plug block is arranged on the side of the thickened portion close to the main piano bar, and a first slot matching the first plug block is provided on the main piano bar; a second slot is arranged on the side of the tail portion close to the auxiliary piano bar, and a second plug block matching the second slot is arranged on the top of the auxiliary piano bar.

5. The erhu according to claim 4, characterized in that: A screw penetrates the main piano bar and is connected to the vibration-assisting beam. The screw is tilted downward, and the rod of the screw passes through the center position of the main piano bar, the first plug block, and one side of the thickened portion to the center position of the central portion.

6. The erhu according to claim 5, characterized in that: A countersunk hole for the screw to connect is formed inside the main piano bar, and a plug for sealing the countersunk hole is arranged inside the countersunk hole.

7. The Erhu according to claim 1, characterized in that: The bottom of the main piano bar, the vibration-assisting beam and the auxiliary piano bar are all arranged inside the piano tube.

8. The Erhu according to any one of claims 2 or 7, characterized in that: The material of the vibration-assisting beam is elastic metal material, and the vibration-assisting beam is a plate body. The two ends of the vibration-assisting beam are respectively provided with sleeves, and the sleeves are respectively sleeved on the bottom of the main piano bar and the top of the auxiliary piano bar. The sleeves are interference fit with the main piano bar and the auxiliary piano bar.

9. The erhu according to claim 8, characterized in that: The thickness of the vibration-assisting beam is 2-3 mm.

10. The erhu according to claim 1, characterized in that: The distance between the main piano bar and the auxiliary piano bar is greater than or equal to 2 cm, and the gap height between the main piano bar and the sound box is 0.5 mm-2 mm.

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