CN111951761A - Two sound roof beam konghou - Google Patents

Abstract

The utility model provides a two sound roof beam konghou, includes the resonance box of an arc cavity box, and the box of this resonance box mainly is gone up the soundboard by first, the second and is formed with soundboard amalgamation down, and the cross section of box is semi-circular cavity, its characterized in that: the inner walls of the first upper sound board, the second upper sound board and the lower sound board are fixedly provided with double sound beams in parallel; the inner walls of the first upper sound board, the second upper sound board and the lower sound board are respectively provided with a transverse groove and a longitudinal groove to form sound tunnels; a transom beam is transversely arranged in the resonance box. The scheme solves the problems that the high pitch area is not bright, the low pitch area is not perfectly smooth and the sound penetrating power is not strong when the Konghou is played in the past.

Description

Two sound roof beam konghou

Technical Field

The invention relates to a plucked string instrument, in particular to a double-sound beam konghou.

Background

An konghou is a traditional Chinese stringed instrument also called plucked string instrument. Originally called "kan hou" or "sky hou", it was used in ancient times, except for palace music, and also spread to folks. Ancient times, there are three forms of horizontal konghou, vertical konghou and phoenix head konghou. The ancient times of the fourteen century are no longer popular, so that the ancient times of the fourteen century can be gradually disappeared, and only some patterns of the konghou can be seen on the former mural and the relief. From the ancient.

The modern konghou is a novel musical instrument which is combined with and developed by a harp zither, or is an improved type of a harp, namely a double-string harp. With the development of modern konghou, nowadays, the two-character konghou increasingly refers to the modern konghou. The modern konghou belongs to the ranks of world harps, and the appearance of the modern konghou is double-row strings (36 strings in each row), while the harp is single-row strings. Modern konghou has a bridge (refer to the bridge of koto), but not a harp. The modern konghou has a phoenix return on the column, which is a representative symbol of Chinese traditional culture. The modern konghou uses the playing technique of harp to a great extent, and is commonly used for solo, repetition and accompaniment of singing and dancing. Modern konghou loudspeaker boxes (resonator boxes) are also arranged on bent wood, and large-scale konghou for professional use in the aspect of the range of sound exceeds six octaves, even reaches seven octaves, and still has five octaves after the common konghou. The main sound board vibrates when playing, and the upper sound board does not vibrate when playing due to the fact that the upper sound board is thick and solid. The tone quality of the high tone area and the low tone area of the modern konghou is poor, and the specific expression is that the high tone area is not bright, the low tone area is not thick and smooth enough, the penetrating power of the organ sound is not strong, and needs to be further improved. The main reason for this is that the resonance box cannot meet the requirement of good resonance vibration from the high range to the low range, i.e. cannot simultaneously adapt to the resonance and vibration of wide frequency changes in the high range, the middle range and the low range. Further research shows that the factors influencing resonance and vibration in the resonance box are more, and besides the materials and the thickness of the panel and the bottom plate, the internal structure and the structure of the resonance box have larger influence. The existing konghou resonator is not favorable for exerting good sound wave resonance and vibration from a high-pitch area to a low-pitch area due to unreasonable design.

In view of the above, it is an object of the present invention to improve the resonator of an existing konghou, and in particular, to improve the internal structure and structure of the resonator.

Disclosure of Invention

The invention provides a dual-tone beam konghou, and aims to solve the problem that the conventional konghou resonator cannot give consideration to high, middle and low tone areas and simultaneously has good resonance tone and penetrating power.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a two sound roof beam konghou, includes the resonance box, and this resonance box is arc cavity box, and this arc cavity box mainly is gone up the soundboard by first, second and is formed with down the soundboard amalgamation, the cross section of arc cavity box is semi-circular cavity in to the central point of semi-circular cavity is first to go up the soundboard and be located upper left side and form half left circular arc top as the benchmark, and the soundboard is located the upper right side and forms half right circular arc top on the second, and the soundboard lies in the below and forms the flat bottom of lower part down, and its innovation lies in:

two lower sound beams are arranged in the resonance box, the lower sound beams are arc-shaped long-strip-shaped sound beam components, the side parts of the two lower sound beams are tightly attached and fixed on the inner wall of the lower sound plate, the length directions of the two lower sound beams are consistent with the length direction of the arc-shaped hollow box body, and the two lower sound beams are parallel in the transverse direction of the lower sound plate and are separated by a distance.

A first groove is formed in the inner wall of the lower sound board and is formed in the transverse direction of the lower sound board; a second groove is formed in the inner wall of the lower sound board and is formed in the length direction of the arc-shaped hollow box body; the first grooves and the second grooves are arranged on the inner wall of the lower sound board in a crossed mode and are communicated with each other, the second grooves are located between the two lower sound beams, and the length direction of the second grooves is consistent with that of the lower sound beams; two lower sound beams are transversely spanned on the lower sound board by the first grooves, a lower transverse sound tunnel is formed on the inner wall of the lower sound board, and a lower longitudinal sound tunnel is formed on the inner wall of the lower sound board by the second grooves.

The relevant content in the above technical solution is explained as follows:

1. in the above scheme, the theme is an konghou, and the innovation point is focused on a "resonator" of the konghou, so that the structures other than the resonator are not described. The other structures except the resonance box in the konghou of the invention can be realized by adopting the original konghou technology.

2. In the above-mentioned scheme, the "resonance box" refers to a body formed by mainly splicing a first upper sound board, a second upper sound board and a lower sound board. The resonance box of the konghou is an arc-shaped hollow box body, and the length direction of the arc-shaped hollow box body refers to the direction extending along the arc-shaped central line of the arc-shaped hollow box body. The transverse direction of the first sound-mounting plate means a direction perpendicular to the center line of the arc. Similarly, the transverse direction of the second upper sound board and the transverse direction of the lower sound board are also the directions perpendicular to the center line of the arc. The term "inner wall" as used herein means an inner wall surface of the resonance box, for example, the inner wall of the first upper tone plate means a wall surface located inside the first upper tone plate of the resonance box, and similarly, the inner walls of the second upper tone plate and the lower tone plate means a wall surface located inside the second upper tone plate and the lower tone plate of the resonance box.

3. In the above scheme, two first upper sound beams may be arranged in the resonator, the first upper sound beams are arc-shaped long-strip-shaped sound beam members, the side portions of the two first upper sound beams are closely fixed to the inner wall of the first upper sound plate, the length direction of the two first upper sound beams is consistent with the length direction of the arc-shaped hollow box body, and the two first upper sound beams are parallel to each other in the transverse direction of the first upper sound plate and are separated by a certain distance.

A third groove is formed in the inner wall of the first upper sound board and is formed in the transverse direction of the first upper sound board; a fourth groove is formed in the inner wall of the first upper sound board and is formed in the length direction of the arc-shaped hollow box body; the third groove and the fourth groove are arranged on the inner wall of the first upper sound board in a crossed mode and are communicated with each other, the fourth groove is located between the two first upper sound beams, and the length direction of the fourth groove is consistent with that of the first upper sound beams; the third slot is crossed two first sound beams on the first sound board, an upper transverse sound tunnel of the left half part is formed on the inner wall of the first sound board, and an upper longitudinal sound tunnel of the left half part is formed on the inner wall of the first sound board by the fourth slot.

Two second upper sound beams are arranged in the resonance box and are arc-shaped long-strip-shaped sound beam components, the side parts of the two second upper sound beams are tightly attached to and fixed on the inner wall of the second upper sound board, the length direction of the two second upper sound beams is consistent with that of the arc-shaped hollow box body, and the two second upper sound beams are parallel in the transverse direction of the second upper sound board and are separated by a distance.

A fifth groove is formed in the inner wall of the second sound-loading plate and is formed in the transverse direction of the second sound-loading plate; a sixth groove is formed in the inner wall of the second sound-loading plate and is formed in the length direction of the arc-shaped hollow box body; fifth grooves and sixth grooves are arranged on the inner wall of the second upper sound board in a crossed mode and are communicated with each other, the sixth grooves are located between the two second upper sound beams, and the length direction of the sixth grooves is consistent with that of the second upper sound beams; the fifth groove crosses two second upper sound beams on the second upper sound board, an upper transverse sound tunnel of the right half part is formed on the inner wall of the second upper sound board, and the sixth groove forms an upper longitudinal sound tunnel of the right half part on the inner wall of the second upper sound board.

4. In the above-described aspect, a transom beam may be provided in the resonance box, the transom beam being in a plate shape, the transom beam being supported between the first upper and lower tone plates and between the second upper and lower tone plates and being positioned at the positions of the third and first grooves and the fifth and first grooves; the transverse sound beam is bilaterally symmetrical by taking the central plane of the semicircular hollow cavity as a reference, wherein the top of the transverse sound beam is fixedly connected with the first upper sound board in the left half position, and the bottom of the transverse sound beam is fixedly connected with the lower sound board; and the top of the beam is fixedly connected with the second upper sound board in the right half position, and the bottom of the beam is fixedly connected with the lower sound board.

5. In the above scheme, the first upper tuning beam is provided with a first upper bridge opening, the first upper bridge opening is a gap at one side of the first upper tuning beam and enables the first upper tuning beam to form an upper bridge type tuning beam structure, and the first upper bridge opening is erected on the third groove. And a second upper bridge opening is arranged on the second upper sound beam, a hole gap is formed in one side of the second upper sound beam, the second upper bridge opening enables the second upper sound beam to form an upper bridge type sound beam structure, and the second upper bridge opening is erected on the fifth groove. And a lower bridge opening is arranged on the lower sound beam, one side of the lower bridge opening on the lower sound beam is a hole gap, so that the lower sound beam forms a lower bridge type sound beam structure, and the lower bridge opening is erected on the first groove.

6. In the above scheme, a first reinforcing plate is arranged on the fixed frame between the two first upper sound beams; and a second reinforcing plate is arranged on the fixed frame between the two second upper sound beams.

7. In the above scheme, the center of the transom beam is provided with a through hole. And the transverse sound beam is provided with an avoidance port at a position corresponding to the first upper sound beam or/and the second upper sound beam. A first notch is formed in the lateral side of the transverse sound beam corresponding to the first upper sound board or/and the second upper sound board, and a first hole is formed between the first notch and the inner wall of the first upper sound board or the second upper sound board in an assembly state; and a second notch is arranged on the lateral side of the transverse sound beam corresponding to the lower sound board, and a second hole is formed between the second notch and the inner wall of the lower sound board in an assembly state.

8. In the above scheme, the first groove, the second groove, the third groove, the fourth groove, the fifth groove and the sixth groove are preferably arc-shaped grooves.

The design principle and concept of the invention are as follows: for an konghou, there are many factors that affect the timbre and penetration, such as the material, thickness and internal structure of the resonator. The Konghou resonator aims to solve the problem that the conventional Konghou resonator cannot give consideration to both high, middle and low tone areas and has good resonance tone and penetrating power, and is mainly and thoroughly improved from the perspective of the internal structure of the resonator, particularly the resonator. The concrete aspects are as follows: firstly, two lower sound beams are fixedly arranged on the inner wall of a lower sound board in parallel; and secondly, transverse and longitudinal grooves (namely a first groove and a second groove) are formed in the inner wall of the lower soundboard to form a lower transverse sound tunnel and a lower longitudinal sound tunnel. Aiming at the problems that the prior konghou cannot be brightened in the high-sound area, but the low-sound area is not perfectly round and smooth and the sound penetrating power of the instrument is not strong, the invention deeply discusses and researches the resonator of the konghou, particularly the structure of the resonator and the sound producing mechanism, and finds out that the main reasons of poor timbre and sound volume and insufficient penetrating power of the prior konghou in the high-sound area and the low-sound area are caused by unreasonable design of the resonator, so that sound waves cannot generate good resonance and vibration in the resonator during playing. Therefore, the inventor breaks through the traditional resonator design of the traditional konghou, and greatly proposes the improved design scheme of the invention, and solves the problems that the high-sound area of the konghou cannot be brightened, the low-sound area is not perfectly round and smooth and the sound penetrating power of the konghou is not strong from the angles of vibration, resonance and sound production.

Due to the application of the above technical solution, the present invention has the following advantages and effects (described in the content of the best mode, i.e. the embodiment of the present invention) compared with the prior art:

1. according to the invention, the first upper sound board, the second upper sound board and the lower sound board are respectively provided with the double-sound beam structure (namely the two first upper sound beams, the two second upper sound beams and the two lower sound beams), because the low sound has large amplitude and low frequency relative to the high sound, the low sound resonance is concentrated in the central area of the resonance box, the high sound resonance is concentrated in the peripheral area of the periphery of the resonance box, the strength of the central areas of the first upper sound board, the second upper sound board and the lower sound board is enhanced, and the double-sound beam structure plays an important role in improving the tone color and the penetrating power of the low sound area. On the other hand, the strength of the central areas of the first upper sound board, the second upper sound board and the lower sound board is enhanced, the thickness difference between the central area of the resonance box and the peripheral edge area is relatively changed, and the sound quality and the penetrating power of a high-sound area are improved.

2. The invention aims at a resonance box, and transverse and longitudinal grooves (namely, a third groove to a second groove) are respectively formed in the inner walls of a first upper sound board, a second upper sound board and a lower sound board. These grooves each form a transverse tone tunnel and a longitudinal tone tunnel (i.e., a tunnel for sound) in the respective panel wall. Because the bass is big, the frequency is low relatively the high pitch amplitude, the bass sympathetic response is concentrated in the central zone of resonant tank, the high pitch sympathetic response is concentrated in the peripheral edge region of resonant tank, the string vibration is collected by the criss-cross central zone of sound tunnel to transmit all around in the resonant tank rapidly through these sound tunnels, this tone quality and the penetrating power to improving the high-pitched region have played the key effect, have also played the good effect to the tone quality and the penetrating power of improving the low-pitched region simultaneously.

3. The invention designs the sound beam into a bridge type sound beam structure, and particularly designs a bridge opening on one side of the sound beam, so that the sound beam is like a bridge arch structure. When the sound beam is erected on the sound tunnel, the sound beam is more favorable for transmitting vibration through the sound tunnel, and the resonance box is more favorable for resonance.

4. According to the invention, the combined design of the transverse sound beams, the longitudinal sound beams and the grooves is adopted on the inner walls of the first upper sound board, the second upper sound board and the lower sound board, so that the space corresponding to the inner side of the first upper sound board is actually divided into eight resonance areas, the space corresponding to the inner side of the second upper sound board is divided into eight resonance areas, and meanwhile, the space corresponding to the inner side of the lower sound board is divided into eight resonance areas, and twenty-four resonance areas are counted. When the Konghou is played, the string vibration is firstly transmitted to the center area of the sound tunnel intersection, then is transmitted to the twenty-four resonance areas through the sound tunnel, and resonance and vibration are generated, so that the string sound is amplified to be resonance sound of the resonance box. When the former konghou is improved to play, only five sound wave quantities can be generated, namely, the space corresponding to the inner side of the first upper soundboard is a resonance area, the space corresponding to the inner side of the second upper soundboard is a resonance area, and the space corresponding to the inner side of the lower soundboard is a resonance area, so that the total number of the three resonance areas is three. Each resonance area generates a sound wave quantity, a chord wave quantity is added, and a percussion wave quantity is added, so that five sound wave quantities are calculated. The improved konghou can generate twenty-six sound wave quantities when played, wherein twenty-four resonance areas generate twenty-four sound wave quantities, one string wave quantity is added, and one percussion wave quantity is added to total twenty-six sound wave quantities. The sound wave quantity, i.e., the number of sound waves, is determined for a specific plucked string instrument of a resonance box, and mainly depends on the number of resonance areas in the resonance box besides one string wave quantity and one percussion wave quantity, and in general, the instrument generates one sound wave quantity per resonance area during playing, and how many resonance areas generate how many sound wave quantities. In addition, the sound volume directly affects the timbre, penetration and volume of the instrument. Therefore, the design of the invention can obviously improve the timbre of the high-tone area and the low-tone area and increase the penetrating power of the high-tone area and the low-tone area.

5. The through holes arranged on the transverse sound beam and the holes among the transverse sound beam, the first upper sound board, the second upper sound board and the lower sound board are channels among all resonance areas in the resonance box, and the channels are designed to be beneficial to mutually transmitting sound waves, resonance and vibration.

6. The reinforcing plates (namely the first reinforcing plate and the second reinforcing plate) are arranged between the two adjacent first upper sound beams and the second upper sound beam in the fixing frame, and have the functions of increasing the middle areas of the first upper sound plates and the second upper sound plates, particularly the strength between the sound beams, increasing the load when the sound beams generate resonance, further improving the tone and the penetrating power of a low sound area, reinforcing the middle areas of the resonance box sound plates, relatively pulling the strength difference with the peripheral edge areas of the resonance box sound plates and facilitating the improvement of the tone and the penetrating power of a high sound area.

7. The third groove to the second groove are arc-shaped grooves, so that the thickness of the first upper sound board, the second upper sound board and the lower sound board is reduced to the greatest extent, and resonance and vibration of the resonance box are influenced.

The above advantages and effects are all explained in an optimum manner. It is particularly emphasized that the provision of the beam structure and the grooves on the inner wall of the lower sound board is more important and relatively more effective than the provision of the equivalent means on the inner walls of the first and second sound boards. The reason is that the lower sound board is connected to the strings, while the first and second upper sound boards are not directly connected to the strings. Therefore, it is easy to understand for those skilled in the art that the provision of the structure of the beams and the provision of the grooves on the inner walls of the lower sound board is the key to solve the technical problem of the present invention, and the provision of the structure of the beams and the provision of the grooves on the inner walls of the first and second upper sound boards is a simple matter of the present invention.

Drawings

FIG. 1 is a schematic view of an konghou according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view of the resonator tank of FIG. 2;

fig. 4 is a front view of a transverse beam of an konghou according to an embodiment of the invention;

fig. 5 is a left view of a transverse beam of an konghou according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 1;

FIG. 7 is a cross-sectional view C-C of FIG. 1;

fig. 8 is a front view of a lower beam of an konghou according to an embodiment of the present invention;

fig. 9 is a left view of a lower sound beam of an konghou according to an embodiment of the present invention;

fig. 10 is a front view of a first upper sound beam of an konghou according to an embodiment of the present invention;

fig. 11 is a left view of a first upper sound beam of an konghou according to an embodiment of the present invention;

fig. 12 is a front view of a second upper sound beam of an konghou according to an embodiment of the present invention;

fig. 13 is a left view of a second top beam of an konghou according to an embodiment of the present invention.

In the above drawings: 1. a first sound-applying plate; 2. a second sound-applying plate; 3. a lower sound board; 4. a first upper frame plate; 5. a second upper frame plate; 6. a first lower frame plate; 7. a second lower frame plate; 8. a string hanging fixing frame is arranged; 9. a lower string hanging fixing frame; 10. a support bar; 11. a first upper sound beam; 12. a second upper sound beam; 13. a bottom sound beam; 14. a first reinforcing plate; 15. a second reinforcing plate; 16. a third trench; 17. a fourth trench; 18. a fifth trench; 19. a sixth trench; 20. a first trench; 21. a second trench; 22. string nails; 23. a first upper bridge opening; 24. a second upper bridge opening; 25. a lower bridge opening; 26. a transom beam; 27. a through hole; 28. avoiding the mouth; 29. a first notch; 30. a second notch; 31. a first hole; 32. a second hole; 33. and (4) a tuning screw.

Detailed Description

The invention is further described with reference to the following figures and examples:

example (b): two sound roof beam konghou

As shown in fig. 1-13, the konghou mainly comprises three parts, namely a resonator (sound box), a frame and strings, wherein the frame is formed by fixedly connecting an upper string hanging fixing frame 8 (see fig. 2 and 3), a lower string hanging fixing frame 9 (see fig. 1 and 6) and a support rod 10 (see fig. 1 and 7). The upper string hanging fixing frame 8 is provided with string nails (not shown in figures 2 and 3), the lower string hanging fixing frame 9 is provided with string adjusting screws 33 (shown in figure 1), the lower sound beam 13 is also provided with string nails 22 (shown in figure 2), one ends of strings are fixed on the string nails (not shown in figure) of the upper string hanging fixing frame 8, then pass through the string nails 22 (shown in figure 2) on the lower sound beam 13 and finally are fixed on the string adjusting screws 33 of the lower string hanging fixing frame 9.

The resonator (sound box) of an konghou is arranged on an upper string hanging fixing frame 8 (see fig. 1), the resonator is an arc-shaped hollow box body (see fig. 1), the arc-shaped hollow box body is composed of a first upper sound board 1, a second upper sound board 2, a lower sound board 3, a first upper frame board 4, a second upper frame board 5, a first lower frame board 6 and a second lower frame board 7 (see fig. 3), wherein the first upper frame board 4 and the second upper frame board 5 are used as supporting frameworks of the center of the top of the resonator, the top of the resonator is provided with a strip-shaped opening, the first upper frame board 4 and the second upper frame board 5 are arranged on two sides of the strip-shaped opening of the top of the resonator (see fig. 2 and 3), the upper string hanging fixing frame 8 is positioned in the strip-shaped opening, and the upper string hanging fixing frame 8 is positioned between the first upper frame board 4 and the second upper frame board 5 and has a gap (see. The first lower frame plate 6 and the second lower frame plate 7 serve as support frames on both sides of the bottom of the resonance box (see fig. 2 and 3). The arc hollow box body is formed by connecting a first upper sound board 1, a second upper sound board 2 and a lower sound board 3 through supporting frameworks at the center of the top and two sides of the bottom and finally splicing the first upper sound board, the second upper sound board and the lower sound board (see figure 3). The cross section of the arc hollow box body is a semicircular hollow cavity (see fig. 2 and 3), the first upper sound board 1 is positioned at the upper left side and forms an arc top of the left half part (see fig. 3) by taking the central point of the semicircular hollow cavity as a reference, the second upper sound board 2 is positioned at the upper right side and forms an arc top of the right half part (see fig. 3), and the lower sound board 3 is positioned at the lower side and forms a flat bottom of the lower part (see fig. 3).

Two lower sound beams 13 (see fig. 1 and 2) are arranged in the resonance box, the lower sound beams 13 are arc-shaped long-strip-shaped sound beam components, the side parts of the two lower sound beams 13 are tightly attached and fixed on the inner wall of the lower sound board 3 (see fig. 1), the length direction of the two lower sound beams 13 is consistent with the length direction of the arc-shaped hollow box body (see fig. 1), and the two lower sound beams 13 are parallel in the transverse direction of the lower sound board 3 and are separated by a certain distance (see fig. 2). The lower sound beam 13 is provided with a lower bridge opening 25 (see fig. 8), the lower bridge opening 25 is a hole on one side of the lower sound beam 13 and enables the lower sound beam 13 to form a lower bridge type sound beam structure, and the lower bridge opening 25 is erected on the first groove 20 (see fig. 2 and 3).

Three first grooves 20 (see fig. 3) are arranged on the inner wall of the lower sound board 3, the three first grooves 20 are all arranged along the transverse direction of the lower sound board 3, and the three first grooves 20 are arranged at intervals in the length direction of the arc-shaped hollow box body (see fig. 1). A second groove 21 (see fig. 3) is formed in the inner wall of the lower sound board 3, and the second groove 21 is formed along the length direction of the arc-shaped hollow box body. Three first grooves 20 and one second groove 21 intersect and penetrate each other on the inner wall of the lower sound board 3 (see fig. 3), wherein the second groove 21 is located at a position between the two lower sound beams 13 (see fig. 2), and the longitudinal direction of the second groove 21 coincides with the longitudinal direction of the lower sound beams 13. The three first grooves 20 cross the two lower tone beams 13 on the lower tone plate 3, and form three lower lateral tone tunnels (see fig. 3) on the inner wall of the lower tone plate 3, and the second grooves 21 form one lower longitudinal tone tunnel (see fig. 3) on the inner wall of the lower tone plate 3.

The length of the first groove 20 is smaller than that of the lower sound board 3 at the corresponding position of the first groove 20, and smooth transition surfaces are arranged between the two ends of the first groove 20 and the inner wall of the lower sound board 3 (see fig. 3). The length of the second groove 21 is smaller than that of the lower sound board 3 at the corresponding position of the second groove 21, and smooth transition surfaces are arranged between the two ends of the second groove 21 and the inner wall of the lower sound board 3 (see fig. 3).

Two first upper sound beams 11 are arranged in the resonance box, the first upper sound beams 11 are arc-shaped long-strip-shaped sound beam components (see fig. 10 and 11), the side parts of the two first upper sound beams 11 are closely fixed on the inner wall of the first upper sound board 1 (see fig. 2), the length direction of the two first upper sound beams 11 is consistent with the length direction of the arc-shaped hollow box body (as the first upper sound beams 11 and the second upper sound beams 12 are symmetrically arranged in the resonance box, see fig. 2, see the second upper sound beams 12 in fig. 1), and the two first upper sound beams 11 are parallel and parallel in the transverse direction of the first upper sound board 1 and are separated by a certain distance. The first upper tuning beam 11 is provided with a first upper bridge opening 23 (see fig. 10), the first upper bridge opening 23 is a hole at one side of the first upper tuning beam 11 and enables the first upper tuning beam 11 to form an upper bridge type tuning beam structure, and the first upper bridge opening 23 is erected on the third groove 16 (see fig. 2 and 3).

Three third grooves 16 (see fig. 3) are provided on the inner wall of the first soundboard 1, the three third grooves 16 are each opened in the transverse direction of the first soundboard 1, and the three third grooves 16 are arranged at intervals in the longitudinal direction of the arc-shaped hollow case (since the third grooves 16 and the fifth grooves 18 are symmetrically arranged in the resonance box, see fig. 3, reference is made to the fifth grooves 18 in fig. 1). A fourth groove 17 (see fig. 3) is provided on the inner wall of the first sound-absorbing board 1, and the fourth groove 17 is opened in the longitudinal direction of the arc-shaped hollow box (the sixth groove 19 in fig. 1 can be referred to since the fourth groove 17 and the sixth groove 19 are symmetrically arranged in the resonance box, see fig. 3). Three third grooves 16 and one fourth groove 17 intersect and penetrate each other on the inner wall of the first soundboard 1 (see fig. 3), wherein the fourth groove 17 is located at a position between two first soundbars 11 (refer to a sixth groove 19 in fig. 1), and the longitudinal direction of the fourth groove 17 coincides with the longitudinal direction of the first soundbars 11. The three third grooves 16 cross the two first tone beams 11 on the first tone plate 1, and form three upper lateral tone tunnels of the left half (see fig. 3) on the inner wall of the first tone plate 1, and the fourth grooves 17 form one upper longitudinal tone tunnel of the left half (see fig. 3) on the inner wall of the first tone plate 1.

The length of the third groove 16 is smaller than that of the first sound board 1 at the corresponding position of the third groove 16, and smooth transition surfaces are arranged between the two ends of the third groove 16 and the inner wall of the first sound board 1 (see fig. 3). The length of the fourth groove 17 is smaller than that of the first sound-loading plate 1 at the corresponding position of the fourth groove 17, and smooth transition surfaces are arranged between the two ends of the fourth groove 17 and the inner wall of the first sound-loading plate 1 (see figure 3).

Two second upper sound beams 12 (see fig. 1 and 2) are arranged in the resonance box, the second upper sound beams 12 are arc-shaped long-strip-shaped sound beam members (see fig. 12 and 13), the side parts of the two second upper sound beams 12 are closely fixed on the inner wall of the second upper sound board 2 (see fig. 2), the length direction of the two second upper sound beams 12 is consistent with the length direction of the arc-shaped hollow box body (see fig. 1), and the two second upper sound beams 12 are parallel and parallel in the transverse direction of the second upper sound board 2 and are separated by a certain distance (see fig. 1). A second upper bridge opening 24 (see fig. 12) is arranged on the second upper sound beam 12, the second upper bridge opening 24 is a hole at one side of the second upper sound beam 12 and enables the second upper sound beam 12 to form an upper bridge type sound beam structure, and the second upper bridge opening 24 is erected on the fifth groove 18.

Three fifth grooves 18 (see fig. 1) are arranged on the inner wall of the second sound-loading plate 2, the three fifth grooves 18 are all opened along the transverse direction of the second sound-loading plate 2, and the three fifth grooves 18 are arranged at intervals in the length direction of the arc-shaped hollow box body (see fig. 1). A sixth groove 19 (see fig. 1) is formed in the inner wall of the second sound-loading plate 2, and the sixth groove 19 is formed along the length direction of the arc-shaped hollow box body. Three fifth grooves 18 and one sixth groove 19 intersect and penetrate each other on the inner wall of the second upper sound board 2 (see fig. 3), wherein the sixth groove 19 is located at a position between the two second upper sound beams 12, and the length direction of the sixth groove 19 coincides with the length direction of the second upper sound beams 12 (see fig. 1). The three fifth grooves 18 cross the two second upper sound beams 12 on the second upper sound board 2, and form three upper lateral sound tunnels of the right half (see fig. 3) on the inner wall of the second upper sound board 2, and the sixth grooves 19 form one upper longitudinal sound tunnel of the right half (see fig. 3) on the inner wall of the second upper sound board 2.

The length of the fifth groove 18 is smaller than that of the second sound board 2 at the corresponding position of the fifth groove 18, and smooth transition surfaces are arranged between the two ends of the fifth groove 18 and the inner wall of the second sound board 2 (see figure 1). The length of the sixth groove 19 is smaller than that of the second sound-loading plate 2 at the corresponding position of the sixth groove 19, and smooth transition surfaces are arranged between the two ends of the sixth groove 19 and the inner wall of the second sound-loading plate 2 (see figure 1).

A cross-tone beam 26 (see fig. 1 and 2) is provided in the resonance box, the cross-tone beam 26 being in the form of a plate (see fig. 4 and 5), the cross-tone beam 26 being supported between the first upper and lower tone plates 1, 3 and the second upper and lower tone plates 2, 3 (see fig. 2), and being positioned at the positions of the third grooves 16 and the first grooves 20, and the fifth grooves 18 and the first grooves 20 (see fig. 1). The transom beam 26 is bilaterally symmetrical with respect to the central plane of the semicircular hollow cavity, wherein the top of the transom beam 26 is fixedly connected with the first upper sound board 1 at the left half position, and the bottom of the transom beam 26 is fixedly connected with the lower sound board 3 (see fig. 2). In the right half position, the top of the cross-beam 26 is fixedly connected to the second upper sound board 2, and the bottom of the cross-beam 26 is fixedly connected to the lower sound board 3 (see fig. 2). The center of the transom beam 26 is provided with a through hole 27 (see fig. 2 and 4). The transom beam 26 is provided with an avoidance port 28 (see fig. 4) at a position corresponding to the first upper sound beam 11 or/and the second upper sound beam 12. The cross member 26 is provided with a first notch 29 (see fig. 4) on a side corresponding to the first or second sound mounting plate 1 or 2, and a first hole 31 (see fig. 2) is formed between the first notch 29 and an inner wall of the first or second sound mounting plate 1 or 2 in an assembled state. The cross member 26 is provided with a second notch 30 (see fig. 4) on a side corresponding to the lower tone plate 3, and a second hole 32 (see fig. 2) is formed between the second notch 30 and the inner wall of the lower tone plate 3 in the assembled state.

A first reinforcing plate 14 (see fig. 2) is fixed between the two first upper sound beams 11. A second reinforcing plate 15 (see fig. 2) is fixed between the two second upper sound beams 12. The third groove 16, the fourth groove 17, the fifth groove 18, the sixth groove 19, the first groove 20 and the second groove 21 are all arc-shaped grooves (see fig. 3).

Other embodiments and structural variations of the present invention are described below:

1. in the above embodiment, the two first upper sound beams 11 are juxtaposed in parallel (see fig. 2). The two second upper sound beams 12 are juxtaposed in parallel (see fig. 1). The two bottom beams 13 are parallel and parallel (see fig. 2). However, the present invention is not limited to this, and the two first upper sound beams 11 need not be parallel, and the two second upper sound beams 12 and the two lower sound beams 13 need not be parallel, but the parallel arrangement is preferable, which is easily understood and accepted by those skilled in the art.

2. In the above embodiments, the lower sound board 3, the first upper sound board 1 and the second upper sound board 2 are all provided with a double-sound-beam structure on the inner wall thereof and are all provided with grooves. However, the present invention is not limited to this, and the measures such as the beams and the grooves provided on the inner walls of the first and second sound boards 1 and 2 may be eliminated or changed to other configurations, and it is also possible to provide only the technical measures provided on the inner walls of the sound boards 3, but the effects are slightly inferior. The lower tone plate 3 is more important than the first and second upper tone plates 1 and 2 for an konghou resonance box. The reason is that the lower sound board 3 is attached to the strings, while the first and second upper sound boards 1 and 2 are not directly associated with the strings, as will be readily understood by those skilled in the art.

3. In the above embodiment, the double tone beam structure is provided on the inner walls of the lower tone plate 3, the first upper tone plate 1, and the second upper tone plate 2. However, the present invention is not limited to this, and the two bottom sound beams 13 may be changed in form to four bottom sound beams 13 used in parallel. For the purposes of the present invention, the four bottom beams 13 are essentially the same as the two bottom beams 13, although the number and form are different. Assuming that two outer sound beams of the four lower sound beams 13 are close to two inner sound beams, the two outer sound beams can be equivalent to a double sound beam. It is therefore believed that such a change does not bring about an unexpected effect and should be understood to be substantially equivalent. Similarly, the double tone beam structure of the first and second tone plates 1 and 2 should also include such variations. In the invention, the double sound beams include the meaning of symmetrical arrangement of even number of sound beams, so the symmetrical arrangement of six sound beams is also the equivalent variation of the invention. As will be readily understood by those skilled in the art.

4. In the above embodiment, three first grooves 20 (see fig. 3) are provided on the inner wall of the lower sound board 3, three third grooves 16 (see fig. 3) are provided on the inner wall of the first upper sound board 1, and three fifth grooves 18 (see fig. 1) are provided on the inner wall of the second upper sound board 2. The present invention is not limited thereto, and the number of the first trench 20, the third trench 16, and the fifth trench 18 may be one, two, four, or five, etc. Such variations may be determined on an actual basis. The number of the first trenches 20, the third trenches 16 and the fifth trenches 18 is at least one in nature.

5. In the above embodiment, the cross-sound beam 26 provided in the resonance box is bilaterally symmetrical with respect to the center plane of the second groove 21 (see fig. 2). The present invention is not limited thereto and may be implemented by combining the two transoms 26 into a unitary structure, i.e., connecting the middle portions of the two transoms 26 in fig. 2 as one integral transom 26. The transom beam 26 in the above embodiment is realized by being divided into two parts, i.e., a left part and a right part. As would be readily understood and accepted by those skilled in the art.

6. In the above embodiment, the first upper tuning beam 11 is provided with the first upper bridge opening 23, the second upper tuning beam 12 is provided with the second upper bridge opening 24, and the lower tuning beam 13 is provided with the lower bridge opening 25. However, the present invention is not limited to this, and the first upper bridge opening 23 may not be provided, the second upper bridge opening 24 and the lower bridge opening 25 may not be provided, and even the bridge opening may be provided only in one or both of the first upper sound beam 11, the second upper sound beam 12 and the lower sound beam 13. This is a variation that is readily understood and accepted by those skilled in the art.

7. In the above embodiment, the first reinforcing plate 14 (see fig. 2) is fixed between the two first upper sound beams 11, and the second reinforcing plate 15 (see fig. 2) is fixed between the two second upper sound beams 12. However, the present invention is not limited to this, and the two first upper sound beams 11 may be suspended in the resonance box without providing the first reinforcing plate 14. Similarly, the two second upper sound beams 12 may be suspended in the resonance box without providing the second reinforcing plates 15.

8. In the above embodiments, the third grooves 16 to the second grooves 21 are all arc-shaped grooves. The invention is not limited in this regard and the grooves may be configured in other shapes, such as concave configurations like V, U, W, etc., but the arcuate slots are preferred. As would be readily understood and accepted by those skilled in the art.

9. In the above embodiment, the two first upper sound beams 11 have the same shape and size (see fig. 10), the two second upper sound beams 12 have the same shape and size (see fig. 12), and the two lower sound beams 13 have the same shape and size (see fig. 8). However, the present invention is not limited to this, and the shape and size of the two first upper sound beams 11 may be different, the shape and size of the two second upper sound beams 12 may be different, and the shape and size of the two lower sound beams 13 may be different. The sound quality can be determined according to the tone color and tone quality of the resonance box. As would be readily understood and accepted by those skilled in the art.

10. In the above embodiment, the resonance box (sound box) of an konghou is an arc-shaped hollow box (see fig. 1) composed of a first upper soundboard 1, a second upper soundboard 2, a lower soundboard 3, a first upper frame plate 4, a second upper frame plate 5, a first lower frame plate 6, and a second lower frame plate 7 (see fig. 3), wherein the first upper frame plate 4 and the second upper frame plate 5 serve as a support frame in the center of the top of the resonance box, and the first lower frame plate 6 and the second lower frame plate 7 serve as support frames on both sides of the bottom of the resonance box (see fig. 2 and 3). However, the present invention is not limited to this, and the first upper soundboard 1, the second upper soundboard 2, and the lower soundboard 3 may be directly combined into a resonance box (sound box) of an konghou without a support frame at the top center and support frames at both sides of the bottom. As would be readily understood and accepted by those skilled in the art.

11. Since the innovations of the present invention are all focused on the resonator, the structure and structure of the resonator of an konghou will be described in this embodiment with emphasis, but other structures can be considered to be realized by the prior art, and the structures of the konghou described in the beginning of this embodiment except the resonator are not intended to limit the present invention.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. The utility model provides a two sound roof beam konghou, includes the resonance box, and this resonance box is arc cavity box, and this arc cavity box mainly is gone up soundboard (2) and lower soundboard (3) amalgamation by first soundboard (1), second and forms, the cross section of arc cavity box is semi-circular cavity in to the central point of semi-circular cavity is first goes up soundboard (1) and is located upper left side and forms the circular arc top of half a left side as the benchmark, and soundboard (2) are located the upper right side and form the circular arc top of half a right side on the second, and soundboard (3) are located the bottom of below and formation lower part down, its characterized in that:

two lower sound beams (13) are arranged in the resonance box, the lower sound beams (13) are arc-shaped long-strip-shaped sound beam components, the side parts of the two lower sound beams (13) are tightly attached and fixed on the inner wall of the lower sound board (3), the length direction of the two lower sound beams (13) is consistent with the length direction of the arc-shaped hollow box body, and the two lower sound beams (13) are parallel in the transverse direction of the lower sound board (3) and are separated by a certain distance;

a first groove (20) is formed in the inner wall of the lower sound board (3), and the first groove (20) is formed in the transverse direction of the lower sound board (3); a second groove (21) is formed in the inner wall of the lower sound board (3), and the second groove (21) is formed in the length direction of the arc-shaped hollow box body; the first grooves (20) and the second grooves (21) are arranged on the inner wall of the lower sound board (3) in a crossed mode and penetrate through each other, wherein the second grooves (21) are located at positions between the two lower sound beams (13), and the length direction of the second grooves (21) is consistent with the length direction of the lower sound beams (13); the first groove (20) transversely crosses two lower sound beams (13) on the lower sound board (3), a lower transverse sound tunnel is formed on the inner wall of the lower sound board (3), and the second groove (21) forms a lower longitudinal sound tunnel on the inner wall of the lower sound board (3).

2. The konghou of claim 1, wherein: two first upper sound beams (11) are arranged in the resonance box, the first upper sound beams (11) are arc-shaped long-strip-shaped sound beam components, the side parts of the two first upper sound beams (11) are tightly attached and fixed on the inner wall of the first upper sound board (1), the length directions of the two first upper sound beams (11) are consistent with the length direction of the arc-shaped hollow box body, and the two first upper sound beams (11) are parallel in the transverse direction of the first upper sound board (1) and are separated by a certain distance;

a third groove (16) is formed in the inner wall of the first upper sound board (1), and the third groove (16) is formed in the transverse direction of the first upper sound board (1); a fourth groove (17) is formed in the inner wall of the first sound-loading plate (1), and the fourth groove (17) is formed in the length direction of the arc-shaped hollow box body; the third grooves (16) and the fourth grooves (17) are arranged on the inner wall of the first upper sound board (1) in a crossed mode and are communicated with each other, wherein the fourth grooves (17) are located between the two first upper sound beams (11), and the length direction of the fourth grooves (17) is consistent with the length direction of the first upper sound beams (11); the third groove (16) transversely crosses two first upper sound beams (11) on the first upper sound board (1), an upper transverse sound tunnel of the left half part is formed on the inner wall of the first upper sound board (1), and the fourth groove (17) forms an upper longitudinal sound tunnel of the left half part on the inner wall of the first upper sound board (1);

two second upper sound beams (12) are arranged in the resonance box, the second upper sound beams (12) are arc-shaped long-strip-shaped sound beam components, the side parts of the two second upper sound beams (12) are tightly attached and fixed on the inner wall of the second upper sound board (2), the length direction of the two second upper sound beams (12) is consistent with the length direction of the arc-shaped hollow box body, and the two second upper sound beams (12) are parallel in the transverse direction of the second upper sound board (2) and are separated by a certain distance;

a fifth groove (18) is formed in the inner wall of the second upper sound board (2), and the fifth groove (18) is formed in the transverse direction of the second upper sound board (2); a sixth groove (19) is formed in the inner wall of the second sound-loading plate (2), and the sixth groove (19) is formed in the length direction of the arc-shaped hollow box body; fifth grooves (18) and sixth grooves (19) are arranged on the inner wall of the second upper sound board (2) in a crossed mode and penetrate through each other, wherein the sixth grooves (19) are located between the two second upper sound beams (12), and the length direction of the sixth grooves (19) is consistent with the length direction of the second upper sound beams (12); the fifth groove (18) transversely crosses two second upper sound beams (12) on the second upper sound board (2), and forms an upper transverse sound tunnel of a right half part on the inner wall of the second upper sound board (2), and the sixth groove (19) forms an upper longitudinal sound tunnel of a right half part on the inner wall of the second upper sound board (2).

3. The konghou of claim 2, wherein: a cross sound beam (26) is arranged in the resonance box, the cross sound beam (26) is in a plate shape, and the cross sound beam (26) is supported between the first upper sound board (1) and the lower sound board (3) and between the second upper sound board (2) and the lower sound board (3) and is positioned at the positions of the third groove (16) and the first groove (20) and the positions of the fifth groove (18) and the first groove (20); the horizontal sound beam (26) is bilaterally symmetrical by taking the central plane of the semicircular hollow cavity as a reference, wherein the top of the horizontal sound beam (26) is fixedly connected with the first upper sound board (1) in the left half position, and the bottom of the horizontal sound beam (26) is fixedly connected with the lower sound board (3); the top of the transverse sound beam (26) is fixedly connected with the second upper sound board (2) in the right half position, and the bottom of the transverse sound beam (26) is fixedly connected with the lower sound board (3).

4. The konghou of claim 2, wherein: a first upper bridge opening (23) is formed in the first upper sound beam (11), the first upper bridge opening (23) is in a gap at one side of the first upper sound beam (11) and enables the first upper sound beam (11) to form an upper bridge type sound beam structure, and the first upper bridge opening (23) is erected on the third groove (16);

a second upper bridge opening (24) is formed in the second upper sound beam (12), the second upper bridge opening (24) is in a gap at one side of the second upper sound beam (12) and enables the second upper sound beam (12) to form an upper bridge type sound beam structure, and the second upper bridge opening (24) is erected on the fifth groove (18);

and a lower bridge opening (25) is formed in the lower sound beam (13), the lower bridge opening (25) is in a hole gap at one side of the lower sound beam (13) and enables the lower sound beam (13) to form a lower bridge type sound beam structure, and the lower bridge opening (25) is erected on the first groove (20).

5. The konghou of claim 2, wherein: a first reinforcing plate (14) is arranged between the two first upper sound beams (11) in a fixed frame mode; a second reinforcing plate (15) is arranged between the two second upper sound beams (12).

6. The konghou of claim 1, wherein: the length of the first groove (20) is smaller than that of the lower sound board (3) at the position corresponding to the first groove (20), and smooth transition surfaces are arranged between the two ends of the first groove (20) and the inner wall of the lower sound board (3); the length of the second groove (21) is smaller than that of the lower sound board (3) at the corresponding position of the second groove (21), and smooth transition surfaces are arranged between the two ends of the second groove (21) and the inner wall of the lower sound board (3).

7. The konghou of claim 2, wherein: the length of the third groove (16) is smaller than that of the first sound-loading plate (1) at the position corresponding to the third groove (16), and smooth transition surfaces are arranged between the two ends of the third groove (16) and the inner wall of the first sound-loading plate (1); the length of the fourth groove (17) is smaller than that of the first sound loading plate (1) at the corresponding position of the fourth groove (17), and smooth transition surfaces are arranged between the two ends of the fourth groove (17) and the inner wall of the first sound loading plate (1).

8. The konghou of claim 2, wherein: the length of the fifth groove (18) is smaller than that of the second sound-loading plate (2) at the position corresponding to the fifth groove (18), and smooth transition surfaces are arranged between the two ends of the fifth groove (18) and the inner wall of the second sound-loading plate (2); the length of the sixth groove (19) is smaller than that of the second sound loading plate (2) at the position corresponding to the sixth groove (19), and smooth transition surfaces are arranged between the two ends of the sixth groove (19) and the inner wall of the second sound loading plate (2).

9. The konghou of claim 3, wherein: a through hole (27) is formed in the center of the transom beam (26); an avoidance opening (28) is formed in the position, corresponding to the first upper sound beam (11) or/and the second upper sound beam (12), of the transverse sound beam (26); a first notch (29) is formed in the lateral side of the transverse sound beam (26) corresponding to the first upper sound board (1) or/and the second upper sound board (2), and a first hole (31) is formed between the first notch (29) and the inner wall of the first upper sound board (1) or/and the second upper sound board (2) in an assembly state; and a second notch (30) is arranged on the lateral side of the transverse sound beam (26) corresponding to the lower sound board (3), and a second hole (32) is formed between the second notch (30) and the inner wall of the lower sound board (3) in an assembly state.

10. The konghou of claim 2, wherein: the first groove (20), the second groove (21), the third groove (16), the fourth groove (17), the fifth groove (18) and the sixth groove (19) are all arc-shaped grooves.

Images