CN111951756A - A two-tone beam ten-string piano - Google Patents

Abstract

A two-tone beam ten-string piano, comprising a resonance box, the box body of the resonance box is assembled by a panel, a bottom plate and a side plate, a middle plate is arranged in the box, and the middle plate divides the inner space of the box body into upper The first resonance cavity and the second resonance cavity located at the lower part are characterized in that: double sound beams are fixed in parallel on the inner wall of the panel, the upper and lower side walls of the middle plate, and the inner wall of the bottom plate; The wall surface and the inner wall of the bottom plate are provided with transverse and longitudinal grooves to form sound tunnels; transverse sound beams are arranged in the first resonance cavity and the second resonance cavity in the transverse direction. This solution solves the problems that the high-pitched area is not bright when the ten-string piano is played, and the low-pitched area is not rich and round enough, and the sound penetration is not strong.

Description

A two-tone beam ten-string piano

technical field

The invention relates to a plucked musical instrument, in particular to a double tone beam ten-string piano.

Background technique

The ten-stringed qin is made of wood, and it is made by cutting and carving. It consists of a piano body and a movable bottom plate. The piano body is divided into two parts: a speaker (sound box) and a tail board. The sound box (resonance box) is close to a cuboid, the movable bottom plate is on the ground, the inside of the sound box (resonance box) is empty, there are two holes on the bottom that communicate with the inside, and there are ten string holes at the head end, and there are traces of strings in Yueshan. The arc-shaped tail board is slightly upturned and suspended in the air, and there are also strangulation marks on the tail end, and there are tie strings under the board. The surface of the piano is raised, the string pattern is inscribed, the whole body is painted with black lacquer, the luster is soft and smooth, and the surface is plain.

The ten-stringed qin is a series of ancient plucked instruments, divided into three types: viola, sub-daqin and daqin. Among them, the central qin has ten strings and a range of five octaves; the sub-daqin has 15 strings and a range of Six octaves; the grand piano has twenty strings and a range of seven octaves.

The problem with ten strings is that the timbre of the high-pitched and low-pitched regions is not good. The specific performance is that the high-pitched region cannot be bright, and the low-pitched region is not rich and round enough. The penetration of the ten-string piano sound is not strong, and needs to be further improved. The main reason is that the ten-stringed piano resonance box cannot meet the requirements of good resonance and vibration from the treble region to the bass region, that is, it cannot simultaneously adapt to the resonance and vibration of wide frequency changes in the treble, mid-range and bass regions. Further research shows that there are many factors affecting resonance and vibration in the resonance box. Except for the material and thickness of the panel and bottom plate, the internal structure and structure of the resonance box have a greater impact. However, due to the unreasonable design of the resonance box of the existing ten-string piano, it is not conducive to exert a good sound wave resonance and vibration between the high-pitched area and the low-frequency area.

In view of this, how to improve the sound box of the existing ten-string piano, especially the internal structure and structure of the sound box, is the subject of the present invention.

SUMMARY OF THE INVENTION

The present invention provides a double-sound beam ten-string piano, which aims to solve the problem that the existing ten-string piano resonance box cannot take into account the high, medium and low frequency regions at the same time with good resonant timbre and penetration.

In order to achieve the above-mentioned purpose, the technical scheme adopted in the present invention is: a two-tone beam ten-string piano, comprising a resonance box, the box body of the resonance box is assembled by a panel, a bottom plate and a side plate, and the bottom plate is composed of a front bottom plate and a rear bottom plate. It is formed by staggered connection in the height direction of the box body, wherein the front bottom plate is lower than the rear bottom plate in the height direction of the box body; an intermediate plate is arranged in the box body, and the intermediate plate is located at the corresponding position of the front bottom plate in the front and rear directions of the box body, The inner space of the box between the front bottom plate and the panel is divided into a first resonance chamber located at the upper part and a second resonance chamber located at the lower part, wherein the first resonance chamber is composed of the space between the middle plate and the panel and the rear bottom plate and the The space between the panels is formed together, and the second resonance cavity is formed by the space between the middle plate and the front bottom plate; the middle plate is provided with a first sound hole, and the first resonance cavity and the second resonance cavity are communicated through the sound hole in the middle plate, Its innovation lies in:

Two first upper sound beams are arranged in the first resonance cavity, the first upper sound beams are elongated sound beam members, and one side of the two first upper sound beams is closely fixed on the side of the panel. On the inner wall, the other side of the two first upper sound beams is suspended in the first resonance cavity, the length direction of the two first upper sound beams is consistent with the length direction of the resonance box, and the two first upper sound beams are in the width direction of the resonance box. One upper bracing is juxtaposed and separated by a distance.

A first groove is formed on the inner wall of the panel corresponding to the first resonance chamber, and the first groove is opened along the width direction of the resonance box; and a second groove is formed on the inner wall of the panel corresponding to the first resonance chamber groove, the second groove is opened along the length direction of the resonance box; the first groove and the second groove are arranged crosswise on the inner wall of the panel and pass through each other, wherein the second groove is located between the two first upper sound beams The length direction of the second groove is consistent with the length direction of the first upper sound beam; the first groove spans the two first upper sound beams in the width direction of the resonance box, and forms an upper sound beam on the inner wall of the panel. The transverse sound tunnel, the second groove forms an upper longitudinal sound tunnel on the inner wall of the panel.

Two second upper sound beams are arranged in the second resonance cavity, and the second upper sound beams are elongated sound beam members, and one side of the two second upper sound beams is closely fixed on the middle plate The other side of the two second upper sound beams is suspended in the second resonance cavity, the length direction of the two second upper sound beams is consistent with the length direction of the resonance box, and the width direction of the resonance box The two second upper bracings are juxtaposed and separated by a distance.

A third groove and a fourth groove are provided on the lower side wall surface of the middle plate corresponding to the second resonance chamber, wherein the third groove is opened along the width direction of the resonance box, and the fourth groove is formed along the width direction of the resonance box. The length direction is opened, and the third groove and the fourth groove are arranged in a cross on the lower side wall of the middle plate and pass through each other, wherein the fourth groove is located between the two second upper sound beams, and the fourth groove The length direction of the second upper sound beam is consistent with the length direction of the second upper sound beam. The third groove spans the two second upper sound beams in the width direction of the resonance box, and forms an upper transverse sound tunnel on the lower side wall of the middle plate. The fourth groove forms an upper longitudinal sound tunnel on the lower side wall surface of the intermediate plate.

The relevant contents in the above technical solutions are explained as follows:

1. In the above scheme, the theme is "ten-stringed piano", and the innovation is focused on the "resonance box" of the ten-stringed piano, so there is no description of other structures other than the resonance box. It can be considered that the other structures except the resonance box in the ten-string piano of the present invention are realized by using the original ten-string piano technology.

2. In the above solution, the "sound box" refers to the body of the piano that is assembled from the front panel, the bottom panel and the side panel. The length direction of the ten-stringed sound box refers to a direction approximately in line with the strings, and the width direction of the sound box is a direction perpendicular to the length direction. For the resonance box, the "inner wall" refers to the inner wall. For example, the inner wall of the panel refers to the wall near the inner side of the resonance box panel, and the inner walls of the front bottom plate and the rear bottom plate refer to the inner wall of the front bottom plate and the rear bottom plate of the resonance box. .

3. in the above-mentioned scheme, can be provided with two first lower sound beams in the described first resonance chamber, the first lower sound beams are elongated sound beam components, and one side of the two first lower sound beams is tight. It is pasted and fixed on the upper side wall of the middle plate, the other side of the two first lower sound beams is suspended in the first resonance cavity relative to the panel, and the length direction of the two first lower sound beams is the same as the length of the resonance box. In the same direction, the two first lower sound beams are juxtaposed and separated by a certain distance in the width direction of the resonance box.

A fifth groove and a sixth groove are provided on the upper side wall surface of the middle plate corresponding to the first resonance chamber, wherein the fifth groove is opened along the width direction of the resonance box, and the sixth groove is along the width direction of the resonance box. The length direction is opened, and the fifth groove and the sixth groove are arranged crosswise on the upper side wall of the middle plate and pass through each other, wherein the sixth groove is located between the two first lower sound beams, and the sixth groove The length direction of the sound box is consistent with the length direction of the first lower sound beam. The fifth groove spans the two first lower sound beams in the width direction of the resonance box, and forms a lower transverse sound tunnel on the upper side wall of the middle plate. The sixth groove forms a lower longitudinal sound tunnel on the upper side wall surface of the intermediate plate.

Two second lower sound beams are arranged in the first resonance cavity, and the second lower sound beams are elongated sound beam members, and one side of the two second lower sound beams is closely fixed on the rear bottom plate The other side of the two second lower sound beams is suspended in the first resonance cavity relative to the panel, and the length direction of the two second lower sound beams is consistent with the length direction of the resonance box, and the width direction of the resonance box From above, the two second lower bracings are side by side and separated by a distance.

A seventh groove and an eighth groove are arranged on the inner wall of the rear bottom plate corresponding to the first resonance chamber, wherein the seventh groove is opened along the width direction of the resonance box, and the eighth groove is formed along the length direction of the resonance box Open, the seventh groove and the eighth groove are arranged crosswise on the inner wall of the rear bottom plate and pass through each other, wherein the eighth groove is located between the two second lower sound beams, and the length direction of the eighth groove is the same as the length of the eighth groove. The length directions of the second lower sound beams are the same, the seventh groove spans the two second lower sound beams in the width direction of the resonance box, and a lower transverse sound tunnel is formed on the inner wall of the rear bottom plate, and the eighth groove is at the rear A lower longitudinal sound tunnel is formed on the inner wall of the bottom plate.

Two third lower sound beams are arranged in the second resonance chamber, the third lower sound beams are elongated sound beam members, and one side of the two third lower sound beams is closely fixed on the front bottom plate The other side of the two third lower sound beams is suspended in the second resonance chamber, the length direction of the two third lower sound beams is consistent with the length direction of the resonance box, and the two third lower sound beams are in the width direction of the resonance box. The third lower bracing is juxtaposed and spaced apart.

A ninth groove and a tenth groove are arranged on the inner wall of the front bottom plate corresponding to the second resonance chamber, wherein the ninth groove is opened along the width direction of the resonance box, and the tenth groove is formed along the length direction of the resonance box Open, the ninth groove and the tenth groove are arranged crosswise on the inner wall of the front bottom plate and penetrate each other, wherein the tenth groove is located between the two third lower sound beams, and the length direction of the tenth groove is the same as the length of the tenth groove. The length directions of the third lower sound beams are the same, the ninth groove spans two third lower sound beams in the width direction of the resonance box, and a lower transverse sound tunnel is formed on the inner wall of the front bottom plate, and the tenth groove is in the front A lower longitudinal sound tunnel is formed on the inner wall of the bottom plate.

4. In the above scheme, a large transverse sound beam can be provided in the first resonance cavity, and the large transverse sound beam is in the shape of a plate, wherein the large transverse sound beam is supported between the panel and the middle plate, and is fixed on the first sound beam. On the position of a groove; the large transverse sound beam is symmetrical on the left and right based on the center plane of the second groove, wherein the top of the large transverse sound beam is fixedly connected with the panel, and the bottom of the large transverse sound beam is fixedly connected with the middle plate, The side part of the large transverse sound beam is fixedly connected with the side plate of the corresponding side.

A small transverse sound beam is arranged in the second resonance cavity, and the small transverse sound beam is in the shape of a plate, wherein the small transverse sound beam supports between the middle plate and the front bottom plate, and is fixed at the position of the third groove; The transverse sound beam is symmetrical with respect to the center plane of the fourth groove, wherein the top of the small transverse sound beam is fixedly connected with the middle plate, the bottom of the small transverse sound beam is fixedly connected with the front bottom plate, and the side of the small transverse sound beam is fixedly connected with the front bottom plate. The part is fixedly connected with the side plate of the corresponding side.

5. in the above-mentioned scheme, can be provided with the first upper bridge hole on the first upper sound beam, and the first upper bridge hole is a hole on the side of the first upper sound beam and makes the first upper sound beam form an upper bridge sound beam. Structure, the first upper bridge hole is erected on the first groove. A second upper bridge hole can be provided on the second upper sound beam, the second upper bridge hole is a hole on one side of the second upper sound beam, and the second upper sound beam forms an upper bridge sound beam structure, and the second upper bridge hole is formed. erected on the third groove. A first lower bridge hole may be provided on the first lower sound beam, the first lower bridge hole is a hole on one side of the first lower sound beam, and the first lower sound beam forms a lower bridge sound beam structure, and the first lower bridge hole is formed. erected on the fifth groove. A second lower bridge hole can be provided on the second lower sound beam, the second lower bridge hole is a hole on one side of the second lower sound beam, and the second lower sound beam forms a lower bridge sound beam structure, and the second lower bridge hole is formed. erected on the seventh groove. A third lower bridge hole can be provided on the third lower sound beam, the third lower bridge hole is a hole on one side of the third lower sound beam, and the third lower sound beam forms a lower bridge sound beam structure, and the third lower bridge hole is formed. erected on the ninth groove.

6. In the above solution, a first upper reinforcing plate can be fixedly framed between the two first upper sound beams. A first lower reinforcing plate may be fixedly framed between the two first lower sound beams. A second lower reinforcing plate may be fixedly framed between the two second lower sound beams.

7. In the above scheme, the large sound beam is provided with a first escape opening corresponding to the first upper sound beam, and the first escape opening is provided with a pillar, and the pillar is fixedly connected with the large transverse sound beam. The large transverse sound beam is provided with a second escape opening corresponding to the first lower sound beam. A first notch is provided on the side where the large transverse sound beam is connected with the panel and the side panel, and in the assembled state, a first moon bud hole is formed between the first notch and the inner wall of the panel and the side panel. A second notch is provided on the side where the large transverse sound beam is connected with the middle plate and the side plate, and in the assembled state, a second moon bud hole is formed between the second notch and the inner walls of the middle plate and the side plate.

8. In the above scheme, a third gap is provided on the side where the small transverse beam is connected with the middle plate and the side plate, and the third gap is formed between the third gap and the inner wall of the middle plate and the side plate in the assembled state. Bud hole. A fourth notch is provided on the side where the small transverse sound beam is connected to the front bottom plate and the side plate, and a fourth moon bud hole is formed between the fourth gap and the inner wall of the front bottom plate and the side plate in the assembled state.

9. In the above scheme, the first trench, the second trench, the fifth trench, the sixth trench, the seventh trench, the eighth trench, the third trench, the fourth trench, the ninth trench The groove and the tenth groove are preferably arc grooves.

The design principle and concept of the present invention are as follows: for a ten-string piano, there are many factors that affect its timbre and penetrating power, such as the material, thickness, internal structure and the like of the resonance box. In order to solve the problem that the existing ten-stringed piano resonance box cannot take into account the high, middle and low frequency regions and have good resonance tone and penetrating power at the same time, the present invention mainly from the perspective of the resonance box, especially the internal structure of the resonance box, thoroughly implements the sound box. Improve. It is embodied in the following aspects: firstly, two first upper sound beams are fixed and juxtaposed on the inner wall of the panel of the first resonance chamber; A second upper sound beam; third, horizontal and vertical grooves (ie, the first groove and the second groove) are opened on the inner wall of the panel of the first resonance chamber to form an upper transverse sound tunnel and an upper longitudinal sound tunnel; Fourth, transverse and longitudinal grooves (ie, the third groove and the fourth groove) are opened on the lower side wall surface of the middle plate of the second resonance chamber to form an upper transverse sound tunnel and an upper longitudinal sound tunnel. Aiming at the problems that the high-pitched region of the existing ten-string piano cannot be bright, the low-pitched region is not rich and round enough, and the sound penetration is not strong, the invention has made in-depth research on the resonance box of the ten-string piano, especially the structure of the resonance box and the sounding mechanism. Through discussion and research, it was found that the main reasons for the poor sound and volume and insufficient penetration in the treble and bass regions of the existing ten-string piano were due to the unreasonable design of the resonance box, especially the resonance chamber, which resulted in sound waves during performance. Good resonance and vibration cannot be produced in the resonance chamber. Accordingly, the inventor broke the shackles of the traditional ten-stringed piano design of the resonance box, and boldly proposed an improved design scheme of the present invention, which solves the problem that the high-pitched area of the ten-stringed piano cannot be lit up from the perspective of vibration, resonance and sound production, while the low-pitched area is not bright. The problems of lack of richness and roundness and weak penetrating power of piano sound have proved that the improved design scheme has outstanding substantive characteristics and significant technical progress, and has obtained obvious technical effects.

Due to the application of the above-mentioned technical solutions, the present invention has the following advantages and effects compared with the prior art (illustrated by the best mode, that is, the content of the embodiments of the present invention):

1. The present invention is provided with a double sound beam structure on the panel, the middle plate and the bottom plate (that is, two first upper sound beams are arranged side by side on the inner wall of the panel, and two first lower sound beams are arranged side by side on the upper side wall of the middle plate. Sound beam, two second lower sound beams are arranged side by side on the inner wall of the rear bottom plate, two second upper sound beams are arranged side by side on the lower side wall of the middle plate, and two third lower sound beams are arranged side by side on the inner wall of the front bottom plate ), due to the large amplitude and low frequency of the bass relative to the treble, the bass resonance is concentrated in the central area of the resonance box, and the treble resonance is concentrated in the surrounding edge area of the resonance box, which strengthens the strength of the central area of the panel, the middle plate and the bottom plate, which is beneficial to improving the sound of the bass region. and penetration plays an important role. On the other hand, the strength of the central area of the front panel, the middle panel and the bottom panel has been strengthened, relatively speaking, the thickness gap between the central area of the resonance box and the surrounding edge area has been changed, which also has a good effect on improving the tone and penetration of the high-pitched area.

2. For the first resonance chamber and the second resonance chamber, transverse and longitudinal grooves (ie, the first groove to the tenth groove) are respectively provided on the inner walls of the front panel, the middle panel and the bottom plate. These grooves all form sound tunnels (that is, tunnels of sound) in their respective sidings. Due to the large amplitude and low frequency of the bass relative to the treble, the bass resonance is concentrated in the central area of the resonance box, and the treble resonance is concentrated in the surrounding edge area of the resonance box. The resonance cavity is transmitted around, which plays a key role in improving the tone and penetration of the high-pitched area, and also plays a good role in improving the tone and penetration of the low-frequency area.

3. In the present invention, the sound beam is designed into a bridge-type sound beam structure, especially a hole is designed on one side of the sound beam, so that the sound beam is like a bridge arch structure. When such a sound beam is erected on the sound tunnel, it is more conducive to the transmission of vibration through the sound tunnel, and it is also more conducive to the resonance of the resonant cavity.

4. The present invention adopts the combined design of the transverse sound beam, the longitudinal sound beam and the groove on the inner wall of the panel, the middle plate and the bottom plate, and divides the space under the panel corresponding to the first resonance chamber into four parts of the front half in a top view. The resonance area and the four resonance areas in the rear half; at the same time, the space above the middle plate corresponding to the first resonance chamber is divided into four resonance areas, and the space above the rear bottom plate corresponding to the first resonance chamber is divided into four resonance areas. The space below the middle plate corresponding to the second resonance chamber is divided into four resonance areas, and the space above the front plate corresponding to the second resonance chamber is divided into four resonance areas, for a total of twenty-four resonance areas. When the ten-string piano is played, the vibration of the strings is first transmitted to the central area where the sound tunnel crosses, and then it is transmitted to the twenty-four resonance areas through the sound tunnel, and resonance and vibration are generated, so as to amplify the string sound into the resonance of the resonance box. Voice. Only eight sound waves can be generated when the first ten-stringed piano is improved, namely, two resonance areas in the upper half of the first resonance chamber, two resonance areas in the lower half, one resonance area in the half of the second resonance chamber, and one resonance area in the lower half of the second resonance chamber. There is one resonance area, a total of six resonance areas. Each resonance zone produces one sonic volume, plus a sine volume, plus a firing volume, for a total of eight sonic volumes. After the improvement, the ten-stringed piano of the present invention can generate twenty-six sound waves. Among them, the twenty-four resonance regions generate twenty-four sound waves, plus one string wave and one firing wave. A total of twenty-six sound waves. The volume of sound waves is the number of sound waves. For the plucked and plucked instruments of a specific resonance box, in addition to a string wave volume and a firing wave volume, it mainly depends on the number of resonance areas in the resonance box. Each resonance area generates one sound wave volume, and as many resonance areas generate as many sound wave volumes. In addition, the amount of sound waves directly affects the timbre, penetration, and volume of the instrument. Therefore, the design of the present invention can obviously improve the timbre of the high-pitched region and the low-pitched region, and increase the penetrating power of the high-pitched region and the low-pitched region.

5. The moon bud holes between the transverse sound beam and the face plate, the middle plate and the bottom plate of the present invention are the channels between each resonance area in the resonance cavity, and the channel design is conducive to mutual transmission of sound waves, resonance and vibration.

6. In the present invention, reinforcing plates (ie, the first upper reinforcing plate, the first lower reinforcing plate and the second lower reinforcing plate) are fixedly framed between two adjacent sound beams, and the first function is to increase the front panel, the middle plate and the bottom plate. The middle area, especially the strength between the sound beams, can increase the load when the sound beams resonate, further improving the tone and penetration of the bass area, and on the other hand, strengthening the central area of the resonant cavity, relatively speaking It also widens the intensity gap with the edge area around the resonance cavity, which is also conducive to improving the tone and penetration of the high-pitched area.

7. The first groove to the tenth groove of the present invention are all arc-shaped grooves, which can minimize the sudden change in thickness of the front panel, the middle panel and the bottom panel, which affects the resonance and vibration of the resonance box.

The above advantages and effects are described in the best way. But it needs to be emphasized that for the present invention, the measures of setting double sound beam structures and opening grooves on the inner wall of the first resonance chamber panel and the lower side wall of the second resonance chamber middle plate are better than those of the first resonance chamber middle plate. It is more important to adopt equal measures on the side wall surface and the inner wall of the bottom plate of the second resonance chamber, and the effect and effect are relatively better. The reason is that there are strings on the top plate, and the bottom plate is not directly connected to the strings. Therefore, the key to solving the technical problem of the present invention is to set the double-sound beam structure and open the grooves on the inner wall of the panel, and to set the double-sound beam structure and open the grooves on the inner wall of the bottom plate is the icing on the cake for the present invention, which is a skill in the art. Easy for people to understand.

Description of drawings

Accompanying drawing 1 is the front view structure diagram of ten-stringed piano resonance box according to the embodiment of the present invention;

Accompanying drawing 2 is A-A cross-sectional view in Fig. 1;

3 is a cross-sectional view of the resonance box body in FIG. 2;

4 is a front view of the inner wall of the panel of the ten-stringed piano resonance box according to the embodiment of the present invention;

5 is a front view of the inner wall of the bottom plate of the ten-stringed piano resonance box according to the embodiment of the present invention;

6 is a top plan view of a middle plate of a ten-stringed piano sound box according to an embodiment of the present invention;

Accompanying drawing 7 is the front view of the first bracing beam of the ten-stringed piano of the embodiment of the present invention;

Accompanying drawing 8 is the left side view of the first upper bracing of the ten-stringed piano of the embodiment of the present invention;

9 is a front view of the first lower bracing of a ten-stringed piano according to an embodiment of the present invention;

Accompanying drawing 10 is the left side view of the first lower bracing of the ten-stringed piano of the embodiment of the present invention;

11 is a front view of the second lower bracing of a ten-stringed piano according to an embodiment of the present invention;

12 is a left side view of the second lower bracing of a ten-stringed piano according to an embodiment of the present invention;

13 is a front view of the second bracing beam of a ten-stringed piano according to an embodiment of the present invention;

14 is a left side view of the second upper bracing of a ten-stringed piano according to an embodiment of the present invention;

15 is a front view of the third bracing of a ten-stringed piano according to an embodiment of the present invention;

Accompanying drawing 16 is the left side view of the third bracing of the ten-stringed piano of the embodiment of the present invention;

17 is a front view of a large transverse sound beam of a ten-stringed piano according to an embodiment of the present invention;

18 is a left side view of a large transverse sound beam of a ten-string piano according to an embodiment of the present invention;

Accompanying drawing 19 is the front view of the small beam of the ten-stringed piano of the embodiment of the present invention;

FIG. 20 is a left side view of a small beam of a ten-stringed piano according to an embodiment of the present invention.

In the above drawings: 1. panel; 2. Bottom plate; 201. front bottom plate; 202. rear bottom plate; 3. side plate; 4. middle plate; 5. first resonance chamber; 6. The second resonance chamber; 7. 8. The first sound hole; 9. The first groove; 10. The second groove; The fifth groove; 11. The sixth groove; 12. The seventh groove; 13. The eighth groove; 14. 14. The third groove; 16. the fourth groove; The ninth groove; 17. The tenth groove; 18. 19. The first upper sound beam; 20. The second upper sound beam; 21. The first lower sound beam; 22. The second lower sound beam; 23. The third lower sound beam; 24. The second sound hole; 25. The third sound hole; 26. Large transverse sound beam; 27. Small transverse sound beam; 28. The first upper reinforcing plate; 29. The first lower reinforcing plate; 30. The second lower reinforcing plate; 31. The first upper bridge hole; The second upper bridge hole; 32. The first lower bridge hole; 33. The second lower bridge hole; 34. 35. The third lower bridge hole; The first gap; 36. The second gap; 37. 38. The first escape point; 39. The second escape port; 40. Pillar; 41. The third gap; The fourth gap; 42. The first month bud hole; 43. 44. Bud hole in the second month; 45. The third month bud hole; Bud hole in the fourth month.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the present invention is further described:

Embodiment: a kind of two-tone beam ten-string piano

Since the innovations of the present invention are all focused on the resonance box, this embodiment will focus on describing the structure and structure of the ten-stringed piano resonance box, while other structures can be considered to be realized by using the existing technology, and will not be described in detail in this embodiment. introduce.

The structure and structure of the ten-stringed piano resonance box in this embodiment: As shown in Figure 1-20, the box body of the resonance box is composed of a panel 1, a bottom plate 2, and a side plate 3 (see Figure 1), and the bottom plate 2 is formed from the front The bottom plate 201 and the rear bottom plate 202 are dislocated and connected in the height direction of the box body (see FIG. 1 ), wherein the front bottom plate 201 is lower than the rear bottom plate 202 in the height direction of the box body. The box is provided with an intermediate plate 4 (see Fig. 1 and Fig. 3 ), the intermediate plate 4 is located at the position corresponding to the front bottom plate 201 in the front and rear directions of the box body (see Fig. 1 ), and connects the front bottom plate 201 and the panel 1. The inner space of the box is divided into a first resonance chamber 5 at the upper part and a second resonance chamber 6 at the lower part (see Figures 1 and 3 ), wherein the first resonance chamber 5 is formed between the middle plate 4 and the panel 1 The space between the rear bottom plate 202 and the panel 1 is formed together (see FIG. 1 ), and the second resonance cavity 6 is formed by the space between the middle plate 4 and the front bottom plate 201 (see FIG. 1 ). The middle plate 4 is provided with a first sound hole 7 (see FIG. 7 ), and the first resonance cavity 5 and the second resonance cavity 6 communicate with each other through the middle plate sound hole 7 .

Two first upper bracing beams 18 (see FIG. 1 ) are arranged in the first resonance chamber 5 , and the first upper bracing beams 18 are elongated bracing members (see FIGS. 7 and 8 ). One side of the first upper sound beam 18 is closely fixed on the inner wall of the panel 1 , the other side of the two first upper sound beams 18 is suspended in the first resonance cavity 5 (see FIG. 2 ), and the two The length direction of an upper sound beam 18 is consistent with the length direction of the resonance box (see FIG. 4 ), and the two first upper sound beams 18 are parallel and juxtaposed at a distance in the width direction of the resonance box. The first upper sound beam 18 is provided with a first upper bridge hole 30 (see FIG. 7 ). In the bridge sound beam structure, the first upper bridge hole 30 is erected on the first groove 8 .

Two first grooves 8 (see FIG. 4 ) are provided on the inner wall of the panel 1 corresponding to the first resonance cavity 5 . The two first grooves 8 are both opened along the width direction of the resonance box, and the two first grooves 8 A groove 8 is spaced apart along the length of the resonance box. A second groove 9 (see FIG. 4 ) is provided on the inner wall of the panel 1 corresponding to the first resonance chamber 5 . The second groove 9 is opened along the length direction of the resonance box, and the second groove 9 is in the resonance chamber. The width direction of the box is at the center position. Two first grooves 8 and one second groove 9 are arranged crosswise on the inner wall of the panel 1 and pass through each other, wherein the second groove 9 is located between the two first upper sound beams 18 (see FIG. 4 ). ), the length direction of the second groove 9 is consistent with the length direction of the first upper bracing 18 . The two first grooves 8 span the two first upper sound beams 18 in the width direction of the resonance box, and form two upper transverse sound tunnels on the inner wall of the panel 1 , and the second groove 9 is on the inner wall of the panel 1 . The upper longitudinal sound tunnel is formed on it (see Figure 4).

The length of the first groove 8 is less than the length of the inner panel 1 of the first resonance cavity 5 at the corresponding position of the first groove 8 (see FIG. 4 ), and the two ends of the first groove 8 are between the inner wall of the panel 1 All have smooth transition surfaces. The length of the second groove 9 is smaller than the length of the inner panel 1 of the first resonance cavity 5 at the corresponding position of the second groove 9 (see FIG. 4 ). Both ends of the second groove 9 are provided between the inner wall of the panel 1 There are smooth transition surfaces.

Two second upper bracing beams 19 (see FIG. 5 ) are arranged in the second resonance chamber 6 , and the second upper bracing beams 19 are elongated bracing members (see FIGS. 13 and 14 ). One side of the second upper sound beams 19 is closely fixed on the lower side wall of the middle plate 4 , and the other sides of the two second upper sound beams 19 are suspended in the second resonance cavity 6 (see FIG. 2 ). The length direction of the two second upper bracing beams 19 is consistent with the length direction of the resonance box, and the two second upper bracing beams 19 are parallel and juxtaposed with a distance in the width direction of the resonance box (see FIG. 5 ). The second upper sound beam 19 is provided with a second upper bridge hole 31 (see FIG. 13 ). In the bridge sound beam structure, the second upper bridge hole 31 is erected on the third groove 14 .

A third groove 14 and a fourth groove 15 are provided on the lower side wall surface of the middle plate 4 corresponding to the second resonance chamber 6 (see FIG. 5 ). Opened in the width direction, the fourth groove 15 is opened along the length direction of the resonance box, the third groove 14 and the fourth groove 15 are arranged in a cross on the lower side wall of the intermediate plate 4 and penetrate each other, wherein the fourth groove 15 Located between the two second upper bracing beams 19 (see Figure 5), the length direction of the fourth groove 15 is consistent with the length direction of the second upper bracing beam 19, and the third groove 14 is in the width direction of the resonance box The upper spans two second upper sound beams 19, and forms an upper transverse sound tunnel on the lower side wall of the middle plate 4, and the fourth groove 15 forms an upper longitudinal sound tunnel on the lower side wall of the middle plate 4 (see Fig. 5).

The length of the third groove 14 is smaller than the length of the middle plate 4 in the second resonance chamber 6 at the corresponding position of the third groove 14 (see FIG. 5 ). Smooth transition surfaces are arranged between the side wall surfaces. The length of the fourth groove 15 is smaller than the length of the middle plate 4 in the second resonance chamber 6 at the corresponding position of the fourth groove 15 (see FIG. 5 ). There are smooth transition surfaces in between.

Two first lower sound beams 20 (see FIGS. 2 and 6 ) are arranged in the first resonance cavity 5 , and the first lower sound beams 20 are elongated sound beam members (see FIGS. 9 and 10 ) , one side of the two first lower sound beams 20 is closely fixed on the upper side wall surface of the middle plate 4 , and the other side of the two first lower sound beams 20 is in the first resonance cavity 5 relative to the panel 1 Suspended (see Figure 2), the length direction of the two first lower sound beams 20 is consistent with the length direction of the resonance box, and the two first lower sound beams 20 are parallel and juxtaposed in the width direction of the resonance box and separated by a certain distance (see Image 6). The first lower sound beam 20 is provided with a first lower bridge hole 32 (see FIG. 9 ). The first lower bridge hole 32 is a hole on one side of the first lower sound beam 20 and makes the first lower sound beam 20 form a lower sound beam. In the bridge sound beam structure, the first lower bridge hole 32 is erected on the fifth groove 10 .

A fifth groove 10 and a sixth groove 11 are provided on the upper side wall surface of the middle plate 4 corresponding to the first resonance chamber 5 (see FIG. 6 ). Opened in the width direction, the sixth groove 11 is opened along the length direction of the resonance box, the fifth groove 10 and the sixth groove 11 are arranged in a cross on the upper side wall of the intermediate plate 4 and penetrate each other (see FIG. 3 ), wherein, The sixth groove 11 is located between the two first lower sound beams 20 (see FIG. 6 ), the length direction of the sixth groove 11 is consistent with the length direction of the first lower sound beam 20 , and the fifth groove 10 is The width direction of the resonance box straddles the two first lower sound beams 20 , and a lower transverse sound tunnel is formed on the upper side wall surface of the middle plate 4 , and the sixth groove 11 forms a lower longitudinal sound tunnel on the upper side wall surface of the middle plate 4 . sound tunnel (see Figure 6).

The length of the fifth groove 10 is smaller than the length of the middle plate 4 in the first resonance chamber 5 at the corresponding position of the fifth groove 10 (see FIG. 6 ). Smooth transition surfaces are arranged between the side wall surfaces. The length of the sixth groove 11 is smaller than the length of the middle plate 4 in the first resonance chamber 5 at the corresponding position of the sixth groove 11 . Smooth transition surfaces (see Figure 6).

Two second lower bracing beams 21 (see FIG. 5 ) are arranged in the first resonance chamber 5 , and the second lower bracing beams 21 are elongated bracing members (see FIGS. 11 and 12 ). One side of the second lower sound beams 21 is closely fixed on the inner wall of the rear bottom plate 202 , and the other sides of the two second lower sound beams 21 are suspended in the first resonance cavity 5 relative to the panel 1 (see FIG. 1 ). ), the length direction of the two second lower bracing beams 21 is consistent with the length direction of the resonance box, and the two second lower bracing beams 21 are parallel and juxtaposed in the width direction of the resonance box (see Figure 5). The second lower sound beam 21 is provided with a second lower bridge hole 33 (see Fig. 11 ). In the bridge sound beam structure, the second lower bridge hole 33 is erected on the seventh groove 12 .

A seventh groove 12 and an eighth groove 13 (see FIG. 5 ) are provided on the inner wall of the rear bottom plate 202 corresponding to the first resonance chamber 5 , wherein the seventh groove 12 is along the width direction of the resonance box Open, the eighth groove 13 is opened along the length direction of the resonance box, the seventh groove 12 and the eighth groove 13 are arranged in a cross on the inner wall of the rear bottom plate 202 and pass through each other, wherein the eighth groove 13 is located in the two first grooves. At the position between the two lower sound beams 21 (see FIG. 5 ), the length direction of the eighth groove 13 is the same as the length direction of the second lower sound beam 21 , and the seventh groove 12 spans the width direction of the resonance box two A second lower sound beam 21 is formed, and a lower transverse sound tunnel is formed on the inner wall of the rear bottom plate 202 , and a lower longitudinal sound tunnel is formed on the inner wall of the rear bottom plate 202 by the eighth groove 13 (see FIG. 5 ).

The length of the seventh groove 12 is smaller than the length of the rear bottom plate 202 in the first resonance chamber 5 at the corresponding position of the seventh groove 12 (see FIG. 5 ). There are smooth transition surfaces in between. The length of the eighth groove 13 is smaller than the length of the rear bottom plate 202 in the first resonance chamber 5 at the corresponding position of the eighth groove 13 (see FIG. 5 ), and between the two ends of the eighth groove 13 and the inner wall of the rear bottom plate 202 All have smooth transition surfaces.

Two third lower bracing beams 22 (see FIG. 5 ) are arranged in the second resonance chamber 6 , and the third lower bracing beams 22 are elongated bracing members (see FIGS. 15 and 16 ). One side of the third lower sound beam 22 is closely fixed on the inner wall of the front bottom plate 201 , and the other side of the two third lower sound beams 22 is suspended in the second resonance cavity 6 (see FIG. 2 ). The length direction of the third lower bracing 22 is consistent with the length direction of the resonance box. In the width direction of the resonance box, the two third lower bracing 22 are parallel and juxtaposed at a distance (see FIG. 5 ). The third lower sound beam 22 is provided with a third lower bridge hole 34 (see FIG. 15 ). In the bridge sound beam structure, the third lower bridge hole 34 is erected on the ninth groove 16 .

A ninth groove 16 and a tenth groove 17 are provided on the inner wall of the front bottom plate 201 corresponding to the second resonance cavity 6 (see FIG. 5 ), wherein the ninth groove 16 is along the width direction of the resonance box Open, the tenth groove 17 is opened along the length direction of the resonance box, the ninth groove 16 and the tenth groove 17 are arranged in a cross on the inner wall of the front bottom plate 201 and pass through each other, wherein the tenth groove 17 is located in the two first grooves. At the position between the three lower bracing beams 22 (see FIG. 5 ), the length direction of the tenth groove 17 is the same as the length direction of the third lower bracing beam 22 , and the ninth groove 16 spans two grooves in the width direction of the resonance box. A third lower sound beam 22 is formed, and a lower transverse sound tunnel is formed on the inner wall of the front bottom plate 201, and the tenth groove 17 is formed on the inner wall of the front bottom plate 201. A lower longitudinal sound tunnel (see FIG. 5).

The length of the ninth groove 16 is smaller than the length of the front bottom plate 201 in the second resonance cavity 6 at the corresponding position of the ninth groove 16 (see FIG. 5 ). There are smooth transition surfaces in between. The length of the tenth groove 17 is smaller than the length of the front bottom plate 201 in the second resonance chamber 6 at the corresponding position of the tenth groove 17 (see FIG. 5 ). There are smooth transition surfaces between them.

A large sound beam 25 (see FIGS. 2 and 4 ) is arranged in the first resonance cavity 5 , and the large sound beam 25 is in the shape of a plate (see FIGS. 17 and 18 ), wherein the large sound beam 25 It is supported between the panel 1 and the intermediate plate 4, and is fixed at the position of the first groove 8 (see Fig. 2). The large sound beam 25 is left-right symmetrical with the center plane of the second groove 9 as a reference, wherein the top of the large sound beam 25 is fixedly connected with the panel 1, and the bottom of the large sound beam 25 is fixedly connected with the middle plate 4, The side part of the large transverse sound beam 25 is fixedly connected with the side plate 3 on the corresponding side (see FIG. 2 ). The large transverse sound beam 25 is provided with a first escape opening 37 (see FIG. 17 ) corresponding to the first upper sound beam 18 , and the first escape opening 37 is provided with a pillar 39 (see FIG. 17 ). The beam 25 is fixedly connected. The large transverse sound beam 25 is provided with a second escape opening 38 corresponding to the first lower sound beam 20 (see FIG. 17 ). A first notch 35 (see FIG. 17 ) is provided on the side where the large transverse sound beam 25 is connected with the panel 1 and the side panel 3 . In the assembled state, the first notch 35 is between the panel 1 and the inner wall of the side panel 3 . The first lunar bud hole 42 is formed (see Fig. 2). A second notch 36 (see FIG. 17 ) is provided on the side where the large transverse beam 25 is connected with the middle plate 4 and the side plate 3 . In the assembled state, the second notch 36 is between the inner wall of the middle plate 4 and the side plate 3 . The second moon bud hole 43 is formed (see Fig. 2).

A small transverse sound beam 26 (see FIGS. 2 and 5 ) is arranged in the second resonance chamber 6 , and the small transverse sound beam 26 is in the shape of a plate (see FIGS. 19 and 20 ), wherein the small transverse sound beam 26 It supports between the middle plate 4 and the front bottom plate 201 (see FIG. 2 ), and is fixed at the position of the third groove 14 (see FIG. 5 ). The small transverse sound beam 26 is symmetrical to the left and right based on the center plane of the fourth groove 15, wherein the top of the small transverse sound beam 26 is fixedly connected to the middle plate 4, and the bottom of the small transverse sound beam 26 is fixedly connected to the front bottom plate 201. , the side of the small transverse beam 26 is fixedly connected with the side plate 3 on the corresponding side (see FIG. 2 ). A third notch 40 (see FIG. 19 ) is provided on the side where the small transverse beam 26 is connected with the middle plate 4 and the side plate 3 . In the assembled state, the third notch 40 is connected to the inner wall of the middle plate 4 and the side plate 3 . The third lunar bud hole 44 is formed therebetween (see Fig. 2). A fourth gap 41 (see FIG. 19 ) is provided on the side where the small transverse beam 26 is connected with the front bottom plate 201 and the side plate 3 . In the assembled state, the fourth gap 41 is between the front bottom plate 201 and the inner wall of the side plate 3 . The fourth month bud hole 45 is formed (see Figure 2).

A first upper reinforcing plate 27 is fixed between the two first upper sound beams 18 (see FIG. 2 ). A first lower reinforcing plate 28 is fixed between the two first lower sound beams 20 (see FIG. 2 ). A second lower reinforcing plate 29 is fixed between the two second lower sound beams 21 (see FIG. 5 ). The first trench 8 , the second trench 9 (see FIG. 3 ), the fifth trench 10 , the sixth trench 11 (see FIG. 3 ), the seventh trench 12 , the eighth trench 13 , the third trench The grooves 14 , the fourth groove 15 , the ninth groove 16 and the tenth groove 17 (see FIG. 3 ) are all arc-shaped grooves.

The following descriptions are made for other implementations of the present invention and structural changes:

1. In the above embodiment, the two first upper bracing beams 18 are parallel and juxtaposed in the width direction of the resonance box (see FIG. 2 ). The two first lower bracings 20 are juxtaposed in parallel (see FIG. 2 ). The two second lower bracings 21 are juxtaposed in parallel (see Figure 5). Two second upper bracing beams 19 are juxtaposed in parallel (see Figure 2). The two third lower bracings 22 are juxtaposed in parallel (see Figure 2). However, the present invention is not limited to this, and the two first upper bracing beams 18 do not have to be parallel. The third lower bracing 22 does not necessarily need to be parallel, but it is best to be parallel, which is easily understood and accepted by those skilled in the art.

2. In the above embodiment, measures such as double-sound beam structures and grooves are provided on the inner walls of the face plate 1 and the bottom plate 2 and the upper and lower side walls of the middle plate 4. However, the present invention is not limited to this. Measures such as double sound beams and grooves used on the inner wall of the bottom plate 2 and the upper side wall surface of the middle plate 4 can be cancelled or changed to other structural forms, and only the inner wall of the panel 1 and the middle plate 4 are retained. The technical measures provided on the lower side wall are also feasible, but the effect is slightly worse. The top panel 1 is more important than the bottom panel 2 for the ten-string sound box. The reason is that strings are provided on the top panel 1, while the bottom plate 2 is not directly related to the strings, which is easily understood by those skilled in the art.

3. In the above embodiment, the inner walls of the panel 1 and the bottom plate 2 and the upper and lower side walls of the middle plate 4 are provided with a double sound beam structure, that is, a structure in which two sound beams are arranged side by side. However, the present invention is not limited to this, and the form of two sound beams can be changed into four sound beams to be used side by side. For the present invention, although the number and form of the four bracings are different from those of the two bracings, their essence is the same. Assuming that the two outer bracings of the four bracings are close to the two inner bracings, it can be equivalent to two bracings. Therefore, it can be considered that this change does not bring unexpected effects, and should be understood as substantially equivalent. In the present invention, the double-sound beams include the meaning of the symmetrical arrangement of the double-sound beams, so the symmetrical arrangement of the six-sound beams is also an equivalent variation of the present invention. This is easily understood by those skilled in the art.

4. In the above embodiment, the number of the first trenches 8 is two (see FIG. 4 ), and the number of the second trenches 9 to the tenth trench 17 is one (see FIGS. 5 and 6 ). However, the present invention is not limited thereto, and the number of the first groove 8 to the tenth groove 17 may be one or more. Such changes can be determined according to the actual situation. Essentially, the number of the first groove 8 to the tenth groove 17 is at least one. This is easily understood by those skilled in the art.

5. In the above embodiment, the large transverse sound beam 25 arranged in the resonance box is left-right symmetrical with the center plane of the second groove 9 as the reference (see FIG. 2 ). However, the present invention is not limited to this, and each large transverse sound beam 25 can be decomposed into two left and right, and arranged symmetrically on the left and right based on the center plane of the second groove 9 . Similarly, the small transverse sound beam 26 arranged in the resonance box is symmetrical with respect to the center plane of the fourth groove 15 (see FIG. 2 ). However, the present invention is not limited to this, and two small transverse sound beams 26 may be combined into one, and arranged symmetrically on the left and right with the center plane of the fourth groove 15 as a reference. This is easily understood and accepted by those skilled in the art.

6. In the above embodiment, a first upper bridge hole 30 is arranged on the first upper sound beam 18, a second upper bridge hole 31 is arranged on the second upper sound beam 19, and a second upper bridge hole 31 is arranged on the first lower sound beam 20. The lower bridge hole 32 is provided with a second lower bridge hole 33 on the second lower sound beam 21 , and a third lower bridge hole 34 is provided on the third lower sound beam 22 . However, the present invention is not limited to this, the first upper bridge hole 30 may not be provided, or the second upper bridge hole 31, the first lower bridge hole 32, the second lower bridge hole 33 and the third lower bridge hole 34 may not be provided, or even only the first upper bridge hole 31. Bridge holes are provided on one or both of the upper bracing 18 , the second upper bracing 19 , the first lower bracing 20 , the second lower bracing 21 and the third lower bracing 22 . This is a variation easily understood and accepted by those skilled in the art.

7. In the above embodiment, the first upper reinforcing plate 27 (see FIG. 2 ) is fixedly framed between the two first upper sound beams 18 , and the first lower reinforcing plate is fixedly framed between the two first lower sound beams 20 . 28 (see FIG. 2 ), a second lower reinforcing plate 29 (see FIG. 5 ) is fixedly framed between the two second lower sound beams 21 . However, the present invention is not limited to this, and the first upper reinforcing plate 27 may not be provided, and the two first upper sound beams 18 may be suspended in the resonance box. Similarly, the first lower reinforcing plate 28 may not be provided, and the two first lower sound beams 20 may be suspended in the resonance box, and the second lower reinforcing plate 29 may not be provided.

8. In the above embodiments, the first grooves 8 to the tenth grooves 17 are arc grooves. However, the present invention is not limited to this, and the groove can be designed into other shapes, such as V-shaped, U-shaped, W-shaped and other concave structures, but the arc-shaped groove is the best design. This is easily understood and accepted by those skilled in the art.

9. In the above embodiment, viewed from the cross section of the first resonance chamber 5 (see FIG. 2 ), the two first lower bracing beams 20 and the two first upper bracing beams 18 are aligned in the up-down direction ( See Figure 2). However, the present invention is not limited to this, and the arrangement may not be aligned, but the alignment arrangement has the best effect. This is easily understood and accepted by those skilled in the art.

10. In the above embodiment, the shape and size of the two first upper bracing beams 18 are the same (see FIG. 7 ), the shape and size of the two first lower bracing beams 20 are the same (see FIG. 9 ), and the The shape and size of the second lower bracing 21 are the same (see FIG. 11 ), the shape and size of the two second upper bracing beams 19 are the same (see FIG. 13 ), and the shape and size of the two third lower bracing 22 are the same (see Figure 15). However, the present invention is not limited to this, the shape and size of the two first upper bracing beams 18 may be different, the shape and size of the two first lower bracing beams 20 may also be different, and the two second lower bracing beams may also be different. The shape and size of the 21 may also be different, the shape and size of the two second upper bracing beams 19 may also be different, and the shape and size of the two third lower bracing beams 22 may also be different. The specific can be determined according to the sound box debugging tone and sound quality. This is easily understood and accepted by those skilled in the art.

The above-mentioned embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those who are familiar with the art to understand the content of the present invention and implement accordingly, and cannot limit the protection scope of the present invention by this. All equivalent changes or modifications made according to the spirit of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A two-tone beam ten-string piano, comprising a resonance box, wherein the box body of the resonance box is assembled by a panel (1), a bottom plate (2), and a side plate (3), and the bottom plate (2) is composed of a front bottom plate (201). ) and the rear bottom plate (202) are dislocated and connected in the height direction of the box body, wherein the front bottom plate (201) is lower than the rear bottom plate (202) in the height direction of the box body; The middle plate (4) is located at a position corresponding to the front bottom plate (201) in the front and rear orientation of the box body, and divides the inner space of the box body between the front bottom plate (201) and the panel (1) into a first resonance cavity located at the upper part (5) and the second resonance chamber (6) at the lower part, wherein the first resonance chamber (5) is formed by the space between the middle plate (4) and the panel (1) and the rear bottom plate (202) and the panel (1) The space between them is formed together, and the second resonance chamber (6) is formed by the space between the middle plate (4) and the front bottom plate (201); the middle plate (4) is provided with a first sound hole (7), the first The resonance cavity (5) is communicated with the second resonance cavity (6) through the sound hole (7) of the middle plate, and is characterized in that: Two first upper bracing beams (18) are arranged in the first resonance chamber (5), the first upper bracing beams (18) are elongated bracing members, and the two first upper bracing beams (18) ) is closely fixed on the inner wall of the panel (1), the other sides of the two first upper sound beams (18) are suspended in the first resonance chamber (5), and the two first upper sound beams (18) are suspended in the air. The length direction of (18) is consistent with the length direction of the resonance box, and the two first upper bracing beams (18) are juxtaposed and separated by a distance in the width direction of the resonance box; A first groove (8) is provided on the inner wall of the panel (1) corresponding to the first resonance chamber (5), and the first groove (8) is opened along the width direction of the resonance box; A second groove (9) is provided on the inner wall of the panel (1) corresponding to the cavity (5), and the second groove (9) is opened along the length direction of the resonance box; the first groove (8) and the second groove (9) The inner wall of the panel (1) is cross-arranged and penetrates each other, wherein the second groove (9) is located between the two first upper bracing beams (18), and the second groove (9) The length direction is consistent with the length direction of the first upper bracing beam (18); the first groove (8) spans the two first upper bracing beams (18) in the width direction of the resonance box, and is on the side of the panel (1). An upper transverse sound tunnel is formed on the inner wall, and an upper longitudinal sound tunnel is formed on the inner wall of the panel (1) by the second groove (9); Two second upper bracing beams (19) are arranged in the second resonance chamber (6), the second upper bracing beams (19) are elongated bracing members, and the two second upper bracing beams (19) ) is closely fixed on the lower side wall of the middle plate (4), the other sides of the two second upper sound beams (19) are suspended in the second resonance cavity (6), and the two second upper sound beams (19) are suspended in the air. The length direction of the upper sound beam (19) is consistent with the length direction of the resonance box, and the two second upper sound beams (19) are juxtaposed and separated by a distance in the width direction of the resonance box; A third groove (14) and a fourth groove (15) are provided on the lower side wall surface of the middle plate (4) corresponding to the second resonance cavity (6), wherein the third groove (14) runs along the The width direction of the resonance box is opened, the fourth groove (15) is opened along the length direction of the resonance box, and the third groove (14) and the fourth groove (15) are arranged crosswise on the lower side wall surface of the intermediate plate (4). and pass through each other, wherein the fourth groove (15) is located between the two second upper bracing beams (19), and the length direction of the fourth groove (15) is the same as the length of the second upper bracing beam (19). In the same direction, the third groove (14) spans two second upper sound beams (19) in the width direction of the resonance box, and forms an upper transverse sound tunnel on the lower side wall of the middle plate (4). The groove (15) forms an upper longitudinal sound tunnel on the lower side wall surface of the intermediate plate (4). 2. The ten-stringed piano according to claim 1, characterized in that: two first lower sound beams (20) are arranged in the first resonance chamber (5), and the first lower sound beams (20) are For the elongated sound beam component, one side of the two first lower sound beams (20) is closely fixed on the upper side wall surface of the middle plate (4), and the other side of the two first lower sound beams (20) is fixed. One side is suspended in the first resonance chamber (5) relative to the panel (1), and the length direction of the two first lower sound beams (20) is consistent with the length direction of the resonance box, and the two first lower sound beams (20) are viewed in the width direction of the resonance box. The first lower bracing (20) is juxtaposed and separated by a distance; A fifth groove (10) and a sixth groove (11) are provided on the upper side wall surface of the intermediate plate (4) corresponding to the first resonance chamber (5), wherein the fifth groove (10) runs along the The width direction of the resonance box is opened, the sixth groove (11) is opened along the length direction of the resonance box, and the fifth groove (10) and the sixth groove (11) are arranged crosswise on the upper side wall of the intermediate plate (4). and pass through each other, wherein the sixth groove (11) is located between the two first lower sound beams (20), and the length direction of the sixth groove (11) is the same as the length of the first lower sound beam (20). In the same direction, the fifth groove (10) spans the two first lower sound beams (20) in the width direction of the resonance box, and forms a lower transverse sound tunnel on the upper side wall surface of the middle plate (4). The groove (11) forms a lower longitudinal sound tunnel on the upper side wall surface of the intermediate plate (4); Two second lower bracings (21) are arranged in the first resonance chamber (5), the second lower bracings (21) are elongated bracing members, and the two second lower bracings (21) ) is closely fixed on the inner wall of the rear bottom plate (202), and the other sides of the two second lower sound beams (21) are suspended in the first resonance chamber (5) relative to the panel (1), The length direction of the two second lower bracing beams (21) is consistent with the length direction of the resonance box, and the two second lower bracing beams (21) are juxtaposed and separated by a distance from the width direction of the resonance box; A seventh groove (12) and an eighth groove (13) are provided on the inner wall of the rear bottom plate (202) corresponding to the first resonance chamber (5), wherein the seventh groove (12) runs along the resonance box. Open in the width direction of the sound box, the eighth groove (13) is opened along the length direction of the resonance box, the seventh groove (12) and the eighth groove (13) are arranged in a cross on the inner wall of the rear bottom plate (202) and pass through each other, Wherein, the eighth groove (13) is located between the two second lower sound beams (21), and the length direction of the eighth groove (13) is consistent with the length direction of the second lower sound beam (21). The seven grooves (12) span the two second lower sound beams (21) in the width direction of the resonance box, and form a lower transverse sound tunnel on the inner wall of the rear bottom plate (202). A lower longitudinal sound tunnel is formed on the inner wall of the rear bottom plate (202); Two third lower bracings (22) are arranged in the second resonance chamber (6), the third lower bracings (22) are elongated bracing members, and the two third lower bracings (22) ) is closely fixed on the inner wall of the front bottom plate (201), the other sides of the two third lower sound beams (22) are suspended in the second resonance chamber (6), and the two third lower sound beams (22) are suspended in the air. The length direction of the beam (22) is consistent with the length direction of the resonance box, and the two third lower sound beams (22) are juxtaposed and separated by a distance in the width direction of the resonance box; A ninth groove (16) and a tenth groove (17) are provided on the inner wall of the front bottom plate (201) corresponding to the second resonance chamber (6), wherein the ninth groove (16) runs along the resonance box. The tenth groove (17) is opened along the length direction of the resonance box, and the ninth groove (16) and the tenth groove (17) are arranged in a cross on the inner wall of the front bottom plate (201) and pass through each other, Wherein, the tenth groove (17) is located between the two third lower bracing (22), the length direction of the tenth groove (17) is consistent with the length direction of the third lower bracing (22), The nine grooves (16) span the two third lower sound beams (22) in the width direction of the resonance box, and form a lower transverse sound tunnel on the inner wall of the front bottom plate (201), and the tenth groove (17) is in the A lower longitudinal sound tunnel is formed on the inner wall of the front bottom plate (201). 3. The ten-stringed piano according to claim 1, characterized in that: a large transverse sound beam (25) is provided in the first resonance chamber (5), and the large transverse sound beam (25) is plate-shaped, Wherein, the large transverse sound beam (25) is supported between the panel (1) and the middle plate (4), and is fixed at the position of the first groove (8); the large transverse sound beam (25) is connected with the second groove ( 9) The center plane is symmetrical to the left and right, wherein the top of the large transverse sound beam (25) is fixedly connected to the panel (1), and the bottom of the large transverse sound beam (25) is fixedly connected to the middle plate (4). The side part of the transverse sound beam (25) is fixedly connected with the side plate (3) of the corresponding side; A small transverse sound beam (26) is arranged in the second resonance chamber (6), and the small transverse sound beam (26) is plate-shaped, wherein the small transverse sound beam (26) supports the middle plate (4) and the front between the bottom plates (201) and fixed at the position of the third groove (14); the small transverse sound beam (26) is symmetrical with respect to the center plane of the fourth groove (15), wherein the small transverse sound beam ( The top of 26) is fixedly connected to the middle plate (4), the bottom of the small beam (26) is fixedly connected to the front bottom plate (201), and the side of the small beam (26) is connected to the side plate ( 3) Fixed connection. The ten-stringed piano according to claim 2, characterized in that: the first upper sound beam (18) is provided with a first upper bridge hole (30), and the first upper bridge hole (30) is in the first upper tone One side of the beam (18) is a hole and the first upper sound beam (18) forms an upper bridge sound beam structure, and the first upper bridge hole (30) is erected on the first groove (8); The second upper sound beam (19) is provided with a second upper bridge hole (31), and the second upper bridge hole (31) is a hole on one side of the second upper sound beam (19) and makes the second upper sound beam (19). (19) forming an upper bridge sound beam structure, and the second upper bridge hole (31) is erected on the third groove (14); The first lower sound beam (20) is provided with a first lower bridge hole (32), and the first lower bridge hole (32) is a hole on one side of the first lower sound beam (20) and makes the first lower sound beam (20). (20) A lower bridge sound beam structure is formed, and the first lower bridge hole (32) is erected on the fifth groove (10); The second lower sound beam (21) is provided with a second lower bridge hole (33), and the second lower bridge hole (33) is a hole on one side of the second lower sound beam (21) and makes the second lower sound beam (21). (21) A lower bridge sound beam structure is formed, and the second lower bridge hole (33) is erected on the seventh groove (12); The third lower sound beam (22) is provided with a third lower bridge hole (34), and the third lower bridge hole (34) is a hole on one side of the third lower sound beam (22) and makes the third lower sound beam (22). (22) A lower bridge type sound beam structure is formed, and the third lower bridge hole (34) is erected on the ninth groove (16). 5 . The ten-stringed piano according to claim 2 , wherein a first upper reinforcing plate ( 27 ) is fixedly framed between the two first upper sound beams ( 18 ); the two first lower sound beams A first lower reinforcing plate (28) is arranged between the fixed frame (20); a second lower reinforcing plate (29) is arranged between the fixed frame between the two second lower sound beams (21). 6. The ten-stringed piano according to claim 1, characterized in that: the length of the first groove (8) is smaller than that of the inner panel (1) of the first resonance chamber (5) corresponding to the first groove (8) The length of the position, a smooth transition surface is provided between the two ends of the first groove (8) and the inner wall of the panel (1); the length of the second groove (9) is smaller than that of the inner panel of the first resonance chamber (5) (1) At the length of the corresponding position of the second groove (9), a smooth transition surface is provided between both ends of the second groove (9) and the inner wall of the panel (1); The length of the third groove (14) is smaller than the length of the middle plate (4) in the second resonance cavity (6) at the corresponding position of the third groove (14), and the two ends of the third groove (14) are the same as A smooth transition surface is provided between the lower side wall surfaces of the intermediate plate (4); the length of the fourth groove (15) is smaller than that of the intermediate plate (4) in the second resonance cavity (6) corresponding to the fourth groove (15) A smooth transition surface is provided between the two ends of the fourth groove (15) and the lower side wall surface of the intermediate plate (4). 7. The ten-string piano according to claim 2, characterized in that: the length of the fifth groove (10) is smaller than that of the middle plate (4) in the fifth groove (10) in the first resonance chamber (5) Corresponding to the length of the position, a smooth transition surface is provided between both ends of the fifth groove (10) and the upper side wall surface of the intermediate plate (4); the length of the sixth groove (11) is smaller than that of the first resonance cavity ( 5) The length of the inner middle plate (4) at the corresponding position of the sixth groove (11), and a smooth transition surface is provided between both ends of the sixth groove (11) and the upper side wall surface of the middle plate (4). ; The length of the seventh groove (12) is smaller than the length of the rear bottom plate (202) in the first resonance cavity (5) at the corresponding position of the seventh groove (12), and the two ends of the seventh groove (12) are the same as A smooth transition surface is provided between the inner walls of the rear bottom plate (202); the length of the eighth groove (13) is smaller than the length of the rear bottom plate (202) in the first resonance chamber (5) at the corresponding position of the eighth groove (13). length, smooth transition surfaces are provided between both ends of the eighth groove (13) and the inner wall of the rear bottom plate (202); The length of the ninth groove (16) is smaller than the length of the inner front bottom plate (201) of the second resonance cavity (6) at the corresponding position of the ninth groove (16), and the two ends of the ninth groove (16) are the same as the length of the ninth groove (16). A smooth transition surface is provided between the inner walls of the front bottom plate (201); the length of the tenth groove (17) is smaller than the length of the front bottom plate (201) in the second resonance chamber (6) at the corresponding position of the tenth groove (17). A smooth transition surface is provided between both ends of the tenth groove (17) and the inner wall surface of the front bottom plate (201). 8 . The ten-stringed piano according to claim 3 , wherein the large transverse sound beam ( 25 ) is provided with a first escape opening ( 37 ) corresponding to the first upper sound beam ( 18 ). A pillar (39) is provided in (37), and the pillar (39) is fixedly connected with the large transverse sound beam (25); the large transverse sound beam (25) is provided with a second escape opening (20) corresponding to the first lower sound beam (20). 38); A first notch (35) is provided on the side where the large transverse sound beam (25) is connected with the panel (1) and the side panel (3). In the assembled state, the first notch (35) is connected to the panel (1) A first moon bud hole (42) is formed between the inner wall of the side plate (3) and the large transverse sound beam (25); a second gap (36) is provided on the side where the large transverse sound beam (25) is connected with the middle plate (4) and the side plate (3). ), in the assembled state, a second bud hole (43) is formed between the second notch (36) and the inner wall of the middle plate (4) and the side plate (3). 9. The ten-stringed piano according to claim 3, characterized in that: a third gap (40) is provided on the side where the small transverse beam (26) is connected with the middle plate (4) and the side plate (3). ), in the assembled state, a third moon bud hole (44) is formed between the third gap (40) and the middle plate (4) and the inner wall of the side plate (3); the small transverse beam (26) and the front bottom plate (201) ) and the side plate (3) are connected with a fourth notch (41), and in the assembled state, a fourth notch (41) is formed between the front bottom plate (201) and the inner wall of the side plate (3). Moon Bud Hole (45). 10. The ten-stringed piano according to claim 2, characterized in that: the first groove (8), the second groove (9), the fifth groove (10), and the sixth groove (11) , the seventh groove (12), the eighth groove (13), the third groove (14), the fourth groove (15), the ninth groove (16) and the tenth groove (17) are all Curved slot.

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