CN212541879U - 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 utility model relates to a plucked string musical instrument, in particular to two sound roof 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 this, how to improve the resonator of the existing konghou, especially to improve the internal structure and structure of the resonator, is the subject of the present invention.

Disclosure of Invention

The utility model provides a two tone roof beam konghou, its purpose is to solve current konghou resonating box can't compromise high, well, bass district and possess good resonance tone color and the problem of penetrating power simultaneously.

In order to achieve the above purpose, the utility model 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. It can be considered that the other structures except the resonance box in the konghou of the utility model are 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 the conception of the utility model 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 utility model discloses a solve current konghou resonant tank and can't compromise the problem that high, well, bass district possess good resonance tone and penetrating power simultaneously, mainly follow the resonant tank, especially the angle of resonant tank inner structure is set out and is carried out thorough improvement to it. 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. The utility model discloses to current konghou high pitch district bright not come out, and the problem that the bass district is perfectly mellow and full and not enough and musical instrument sound penetration is not strong, to the resonance box of konghou, especially resonance box structure and sound production mechanism have carried out deep discussion and research, and the tone quality and the volume that have found current konghou high pitch district and bass district are not good and the main reason that the penetration is not enough are because the unreasonable institute of resonance box design is sent, and the sound wave can not produce good sympathetic response and vibration in the resonance box when leading to playing. In view of the above, the inventor has broken the constraint of traditional resonance box design of an konghou in the past, and the bold has proposed the utility model discloses an improved design scheme has solved the angle of vibration, sympathetic response, sound production that the high sound zone of an konghou can not come out, and the low sound zone is muddy and mellow not enough and the penetrating power of musical instrument sound is not strong problem, and practice proves that this improved design scheme has outstanding substantive characteristics and apparent technological progress to obvious technological effect has been obtained.

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

1. the utility model discloses all be provided with two sound beam structures (two first sound beams of going up promptly, sound beam on two seconds, two sound beams down) on first sound board, second sound board and the lower soundboard, because the relative high pitch amplitude of bass is big, the frequency is low, the bass sympathetic response is concentrated in the central zone of resonant tank, the high pitch sympathetic response is concentrated in the peripheral region all around of resonant tank, strengthened first sound board of going up, the second sound board and soundboard central zone intensity down, played important effect to improving bass district tone color and penetrating power. 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 utility model discloses to the resonance box, seted up horizontal and vertical slot (third slot to second slot promptly) on the inner wall of soundboard and lower soundboard on first soundboard, the second respectively. 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 utility model discloses design into bridge type sound roof beam structure with the sound roof beam, especially design the bridge opening in one side of sound roof beam, make the sound roof beam like the 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. The utility model discloses adopt the combination design of horizontal sound roof beam, longitudinal sound roof beam and slot on the inner wall of first last soundboard, second on the soundboard and down the soundboard, in fact with eight sympathetic response regions are cut apart into in the space that first last soundboard inboard corresponds, and eight sympathetic response regions are cut apart into in the space that the soundboard inboard corresponds on the second, and eight sympathetic response regions are cut apart into in the space that the soundboard inboard corresponds down simultaneously, and twenty four sympathetic response regions count. 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. And after improving the utility model discloses can produce twenty six sound wave volume when konghou plays, wherein, twenty four sympathetic response regions produce twenty four sound wave volume, including a string wave volume, in addition a percussion wave volume, totally twenty six sound wave volume. The sound wave quantity, i.e. the number of sound waves, for a plucked string instrument of a specific resonance box mainly depends on the number of resonance areas in the resonance box, besides one string wave quantity and one percussion wave quantity, and usually, 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 utility model relates to a can obviously improve the tone quality in high-pitched sound district and bass district, increase the penetrating power in high-pitched sound district and bass district.

5. The utility model discloses through-hole and the horizontal sound roof beam that establish on the horizontal sound roof beam and first go up the soundboard, the second go up the soundboard and the hole between the soundboard down are the passageway between each sympathetic response region in the resonant tank, and this kind of channel design does benefit to each other and transmits sound wave, sympathetic response and vibration.

6. The utility model discloses the mount is equipped with the reinforcing plate (first reinforcing plate and second reinforcing plate promptly) on two adjacent first last tone beams and second between the tone beam, its effect can increase first tone plate and second and go up the tone plate middle part region, especially intensity between the tone beam, load when can increasing the tone beam and produce the sympathetic response, the tone quality and the penetrating power in bass district have further been improved, on the other hand has strengthened the central zone of resonance box soundboard, relatively speaking also pull open with the all around regional intensity disparity of edge of box soundboard altogether, also be favorable to improving the tone quality and the penetrating power in high tone district.

7. Third slot all adopts the arc wall to second slot, can be so that first go up the soundboard, the second go up the soundboard and down the soundboard on thickness minimize thickness sudden change, influence the sympathetic response and the vibration of resonant tank.

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 than the equivalent provision on the inner walls of the first and second sound boards, and the effect and effect are relatively better. 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. It is the solution to set up the two sound beam structures and set up the slot consequently on soundboard inner wall down the utility model discloses technical problem's key, and it is right to set up two sound beam structures and set up the slot on first soundboard and the second soundboard inner wall the utility model discloses it is better to add the flower, and this is that technical staff in the field understands easily.

Drawings

Fig. 1 is a schematic structural 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 sound beam of an konghou according to an embodiment of the present invention;

fig. 5 is a left view of a transverse sound 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 sound 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 upper sound 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 will be further described with reference to the following drawings 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 changes of the present invention are described below as follows:

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 optimal, 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 that are adopted on the inner walls of the first and second sound boards 1 and 2 may be cancelled or changed to other structural forms, and it is also possible to only keep the technical measures set on the inner wall of the sound board 3, which is only slightly inferior in effect. 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 beams 13 may be changed from the form to four bottom beams 13 for parallel use. For the present invention, the four bottom beams 13 and the two bottom beams 13 are different in number and form, but are identical in nature. 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. The utility model discloses well two sound roof beams include the meaning of even number sound roof beam symmetrical arrangement, therefore six sound roof beam symmetrical arrangement are also the utility model discloses equate the variation. 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. However, the present invention is not limited thereto, and the number of the first groove 20, the third groove 16 and the fifth groove 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). However, the present invention is not limited to this, and the two transoms 26 may be combined into an integral structure, that is, the middle portions of the two transoms 26 in fig. 2 are connected together as an 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, or the second upper bridge opening 24 and the lower bridge opening 25 may not be provided, and even the bridge opening is provided only on 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 resonator 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. However, the present invention is not limited to this, and the groove may be designed into other shapes, such as a V-shape, a U-shape, a W-shape, etc., but the arc-shaped groove is the best design. 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, the shape and the size of the two first beams 11 can be different, the shape and the size of the two second beams 12 can be different, and the shape and the size of the two beams 13 can 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 utility model discloses be not limited to this, can not have the supporting framework of top central authorities and the supporting framework of bottom both sides, and directly go up soundboard 2 and the soundboard 3 amalgamation becomes the resonant tank (audio amplifier) of an konghou on the first soundboard 1, the second, nevertheless in the above embodiment, the supporting framework who adopts top central authorities and the supporting framework of bottom both sides are optimal design. As would be readily understood and accepted by those skilled in the art.

11. Because the utility model discloses an innovation all concentrates on the resonant tank, consequently this embodiment will focus on describing the structure and the structure of an konghou resonant tank, and other structures can be considered to adopt prior art to realize, and the konghou that describes in this embodiment is other structures except that the resonant tank does not regard as the utility model discloses a restriction.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot 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 by 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.

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