A full-band high-quality Ruan with sound beam and sound tunnel

Abstract

A full-band high-quality Ruan with a sound beam and a sound tunnel comprises a resonance box, which comprises a panel, a bottom plate and a side plate; a first groove and a second groove are arranged on the lower surface of the panel, the two grooves are cross-intersected and mutually connected on the lower surface of the panel, and the lower surface of the panel is equally divided into four upper resonance areas; an upper sound beam assembly is fixedly arranged in the middle of the lower surface of the panel, including a plurality of first strip sound beam components, which are arranged in pairs on both sides of the first groove and on both sides of the second groove; the first groove and the second groove respectively form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel. The present invention changes the panel of the Ruan from the previous free vibration mode to the current standard vibration mode, and solves the problem that the high-pitched area of ​​the Ruan is not bright, and the low-pitched area is not thick and round enough from the perspective of vibration, resonance and sound generation. Practice has proved that the improved design scheme has outstanding substantial characteristics and significant technical progress.

Description

Technical Field

[0001] The invention relates to a plucked string instrument, in particular to a full-band high-quality Ruan with a sound beam and a sound tunnel. The Ruan includes a treble Ruan, a small Ruan, a middle Ruan, a large Ruan and a bass Ruan. Background Art

[0002] Ruan is a traditional musical instrument of the Han nationality, short for Ruanxian. It is said that Ruanxian of the Western Jin Dynasty was good at playing this instrument, hence the name. It has four strings and a column, and is shaped like a moon guitar. It originated in the Tang Dynasty and was widely spread among the people in the Yuan Dynasty. It became a favorite plucked instrument with a wide range of sound and rich expressiveness.

[0003] like Figure 1 , 2 As shown, the Ruan consists of a headstock, a neck, a body, pegs, a shank, frets, bridges, bindings and strings. The body is an oblate resonance box 20, which is glued together by a panel 21, a bottom plate 22 and a frame plate 23. The panel 21 is glued with frets and has sound holes 24. There are four pegs, and the strings are usually silk strings, intestine strings or metal strings.

[0004] The range of the Ruan is usually four and a half octaves, of which the treble area accounts for about a quarter of the Ruan's range, the middle area accounts for about one-half of the Ruan's range, and the bass area accounts for about a quarter of the Ruan's range. At present, due to the limitations of the traditional sound beam design, the Ruan has a common problem: the timbre of the treble and bass areas is not good, and the timbre effect that the Ruan should have is not brought into play. The specific manifestation is that the treble area is not bright, and the bass area is not thick and round enough. The main reason is that the current Ruan's resonance box cannot meet the good broadband vibration from the treble area to the bass area, that is, it cannot adapt to the wider frequency change resonance and vibration of the treble area, the middle area and the bass area at the same time. Further research shows that there are many factors that affect the broadband vibration in the resonance box. In addition to the panel and the bottom plate, the main one is the design problem of the traditional sound beam. However, the sound beam 25 of the existing resonance box 20 is not designed reasonably (such as Figure 3 , 4 ), which is not conducive to the resonance box 20 to play a good sound wave resonance and vibration from the high pitch area to the low pitch area. For example, the sound beam 25 is fixed to the bottom surface of the panel 21 in an "eight" shape in the resonance box 20, and does not play a good acoustic effect.

[0005] Therefore, how to solve the above-mentioned deficiencies in the prior art has become a subject to be studied and solved by the present invention. Summary of the invention

[0006] The purpose of the present invention is to provide a full-band high-quality Ruan with a sound beam and a sound tunnel.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A full-band high-quality Ruan with a sound beam and a sound tunnel, comprising a resonance box, the resonance box comprising a panel, a bottom plate and side plates;

[0009] The lower surface of the panel is provided with a first groove and a second groove, the first groove and the second groove are cross-intersected on the lower surface of the panel and interpenetrate each other, the intersection point is located at the center of the panel, and the lower surface of the panel is divided into four upper resonance areas;

[0010] An upper sound beam assembly is fixedly provided in the middle of the lower surface of the panel, and the upper sound beam assembly includes a plurality of first strip sound beam components, and the first strip sound beam components are arranged in pairs on both sides of the first groove and on both sides of the second groove;

[0011] The first groove and the second groove form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel respectively.

[0012] The relevant contents in the above technical solution are explained as follows:

[0013] 1. In the above scheme, a third groove and a fourth groove are provided on the upper surface of the bottom plate, and the third groove and the fourth groove are cross-intersected and interpenetrated on the upper surface of the bottom plate, and the intersection is located at the center of the bottom plate, thereby dividing the upper surface of the bottom plate into four lower resonance areas;

[0014] A lower sound beam assembly is fixedly provided at the middle part of the upper surface of the bottom plate, and the lower sound beam assembly includes a plurality of second strip sound beam components, and the second strip sound beam components are arranged in pairs on both sides of the third groove and on both sides of the fourth groove;

[0015] The third groove and the fourth groove form a lower transverse sound tunnel and a lower longitudinal sound tunnel on the upper surface of the bottom plate respectively.

[0016] 2. In the above scheme, the first groove and the second groove are cross-intersecting and interpenetrating on the lower surface of the top plate, and the third groove and the fourth groove are cross-intersecting and interpenetrating on the upper surface of the bottom plate, which helps to quickly transmit the vibration of the strings to the surroundings of the top plate and the bottom plate through the cross-shaped sound tunnel (i.e., the sound tunnel) formed by the grooves.

[0017] 3. In the above solution, the intersection of the first groove and the second groove is located at the center of the panel, and the intersection of the third groove and the fourth groove is located at the center of the bottom plate. This design can improve the sound quality and timbre of the resonance box.

[0018] 4. In the above scheme, an upper connecting beam is provided between two adjacent first strip-shaped sound beam components, and the upper connecting beam spans above the first groove and the second groove, forming the upper sound beam component in a tic-tac-toe shape; and each of the upper connecting beams is located in the central area of ​​the lower surface of the panel. With this design, the central area of ​​the panel can be strengthened.

[0019] 5. In the above scheme, a lower connecting beam is provided between two adjacent second strip-shaped sound beam components, and the lower connecting beam spans over the third groove and the fourth groove, forming the lower sound beam component in a tic-tac-toe shape; and each of the lower connecting beams is located in the central area of ​​the upper surface of the bottom plate. With this design, the central area of ​​the bottom plate can be strengthened.

[0020] 6. In the above scheme, the panel and the bottom plate both include a high-pitched area at the periphery, a middle-pitched area at the middle section, and a low-pitched area at the center in terms of the sound frequency band; wherein the wall thickness of the panel and the bottom plate gradually increases from the outside to the inside, the wall thickness of the low-pitched area is greater than that of the middle-pitched area, and the wall thickness of the middle-pitched area is greater than that of the high-pitched area; the upper sound beam assembly is located in the low-pitched area of ​​the panel, and the lower sound beam assembly is located in the low-pitched area of ​​the bottom plate.

[0021] With this design, by setting the thicker bass area close to the center, the low-frequency vibration with lower frequency and larger amplitude can be made in the bass area of ​​the panel and bottom plate to produce a thicker and rounder bass; by setting the thinner treble area far away from the center, the high-frequency vibration with higher frequency and smaller amplitude can be made in the treble area of ​​the panel and bottom plate to produce a more transparent and bright treble, thereby effectively improving the timbre and sound quality produced by the Ruan in the entire frequency band.

[0022] 7. In the above solution, the upper sound beam assembly and the lower sound beam assembly are arranged in an aligned manner in the vertical direction.

[0023] 8. In the above solution, the inner end thickness of the upper sound beam assembly and the lower sound beam assembly is greater than the outer end thickness. With this design, the central area of ​​the panel and the bottom plate can be strengthened.

[0024] 9. In the above solution, the first groove, the second groove, the third groove and the fourth groove are all arc-shaped grooves, which can minimize the thickness change of the panel and the bottom plate to avoid affecting the resonance and vibration of the panel and the bottom plate.

[0025] 10. In the above solution, the lengths of the first groove and the second groove are both smaller than the width of the panel, and the lengths of the third groove and the fourth groove are both smaller than the width of the bottom plate;

[0026] A smooth transition surface is provided between the outer ends of the first groove and the second groove and the lower surface of the panel; a smooth transition surface is provided between the outer ends of the third groove and the fourth groove and the upper surface of the bottom plate.

[0027] The working principle and advantages of the present invention are as follows:

[0028] The present invention discloses a full-band high-sound quality Ruan with a sound beam and a sound tunnel, comprising a resonance box, which comprises a panel, a bottom plate and a side plate; a first groove and a second groove are provided on the lower surface of the panel, the two grooves are cross-intersected on the lower surface of the panel and are interconnected, and the lower surface of the panel is equally divided into four upper resonance areas; an upper sound beam assembly is fixedly provided in the middle of the lower surface of the panel, comprising a plurality of first strip-shaped sound beam components, which are arranged in pairs on both sides of the first groove and on both sides of the second groove; the first groove and the second groove respectively form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel.

[0029] Compared with the prior art, in order to solve the problem that the existing Ruan cannot take into account the high, middle and low ranges and have good resonance timbre, the present invention improves the existing Ruan, especially the panel design of the Ruan. Specifically, it is embodied in the following aspects: first, an upper sound beam assembly is set on the panel; second, a cross-shaped groove is opened on the panel, so as to form a cross-shaped sound tunnel on the panel.

[0030] The present invention aims at the problem that the existing Ruan has poor timbre in the high-pitched area and is not thick and round enough in the low-pitched area. The design and sound-generating mechanism of the Ruan are deeply explored and studied, and the main reason for the poor timbre in the high-pitched area and the low-pitched area of ​​the existing Ruan is found to be due to the unreasonable design of the panel. Based on this, the inventor broke the constraints of the previous Ruan composition design and boldly proposed the improved design scheme of the present invention. This improved design scheme changes the panel from the previous free vibration mode to the current standard vibration mode, and solves the problem that the Ruan has poor timbre in the high-pitched area and is not thick and round enough in the low-pitched area from the perspective of vibration, resonance, and sound generation. Practice has proved that the improved design scheme has outstanding substantive characteristics and significant technical progress, and has achieved obvious technical effects.

[0031] Due to the application of the above technical solution, the present invention has the following advantages and effects compared with the existing ones:

[0032] 1. The present invention sets an upper sound beam assembly on the lower surface of the panel. Since the bass has a larger amplitude and lower frequency than the treble, the bass resonance is concentrated in the central area of ​​the panel, and the treble resonance is concentrated in the surrounding edge areas of the panel. Strengthening the strength of the central area of ​​the panel plays an important role in improving the timbre and sound quality of the bass area. Since the thickness of the panel is a gradual thickness structure with thicker central area and thinner surrounding areas, the strength of the central area of ​​the panel is strengthened, and the thickness difference between the central area of ​​the panel and the surrounding edge areas is relatively changed, which also plays an important role in improving the timbre and sound quality of the treble area.

[0033] The same design concept is also applicable to the improvement of the bottom plate, that is, by setting a lower sound beam assembly on the bottom plate, it can help improve the timbre and sound quality of the Ruan.

[0034] 2. The present invention has a cross-shaped groove on the lower surface of the panel, which actually forms a cross-shaped sound tunnel on the lower surface of the panel. The vibration is collected by the center of the panel and quickly transmitted to the edges of the panel through the cross-shaped sound tunnel (i.e., the sound tunnel), which plays a key role in improving the timbre and sound quality of the bass and treble areas.

[0035] The same design concept also applies to the improvement of the bottom plate, that is, by opening a cross-shaped groove on the bottom plate, it can help improve the timbre and sound quality of the Ruan.

[0036] 3. The present invention divides the panel into four equal resonance areas through the design of the upper sound beam assembly and the cross-shaped groove. When the Ruan is played, the vibration of the strings is first transmitted to the central area of ​​the panel, and then transmitted to each resonance area through the sound tunnel, and resonance and vibration are generated, thereby amplifying the string sound into the resonance sound of the panel. Before the improvement, the Ruan can only produce four sound waves when playing, that is, in the resonance cavity, the area corresponding to the panel is a resonance area, and the area corresponding to the bottom plate is a resonance area. Each resonance area produces a sound wave, plus a string wave, plus a percussion wave, a total of four sound waves. After the improvement, the Ruan of the present invention can produce seven sound waves when playing, among which the four resonance areas of the panel produce four sound waves, one sound wave of the bottom plate, plus a string wave, plus a percussion wave, a total of seven sound waves.

[0037] If a cross-shaped groove is also provided on the bottom plate, by equally dividing the bottom plate into four resonance areas, the improved Ruan of the present invention can generate ten sound waves when playing, wherein the four resonance areas of the panel generate four sound waves, the four resonance areas of the bottom plate generate four sound waves, plus one string wave, plus one firing wave, for a total of ten sound waves.

[0038] The sound wave quantity is the number of sound waves. For a stringed instrument with a specific resonance box, in addition to a string wave quantity and a percussion wave quantity, it mainly depends on the number of resonance areas in the resonance box. Usually, when the instrument is played, each resonance area generates a sound wave quantity, and the number of sound waves generated depends on the number of resonance areas. In addition, the sound wave quantity directly affects the timbre, penetration and volume of the instrument. Therefore, the design of the present invention can significantly improve the timbre of the high and low pitch areas and increase the penetration of the high and low pitch areas.

[0039] 4. The grooves of the present invention are all arc-shaped, which can reduce the thickness mutation of the panel as much as possible and avoid affecting the resonance and vibration of the panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Attached Figure 1 This is an illustration of the appearance of the existing Ruan Figure 1 (front);

[0041] Attached Figure 2 This is an illustration of the appearance of the existing Ruan Figure 2 (side);

[0042] Attached Figure 3 It is a schematic diagram of the bottom structure of the existing Ruan panel;

[0043] Attached Figure 4 for Figure 3 Bottom view of

[0044] Attached Figure 5 This is a schematic diagram of the structure of a panel according to an embodiment of the present invention;

[0045] Attached Figure 6 for Figure 5 Bottom view of

[0046] Attached Figure 7 Schematic diagram of the structure of the base plate of an embodiment of the present invention;

[0047] Attached Figure 8 for Figure 7 Bottom view of .

[0048] In the above drawings: 1. panel; 1a. upper resonance area; 2. bottom plate; 2a. lower resonance area; 4. upper sound beam assembly; 4a. first strip sound beam member; 4b. upper connecting beam; 5. lower sound beam assembly; 5a. second strip sound beam member; 5b. lower connecting beam; 6. first groove; 7. second groove; 9. third groove; 10. fourth groove; 20. guitar body; 21. panel; 22. bottom plate; 23. frame plate; 24. sound hole; 25. sound beam. DETAILED DESCRIPTION

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0050] Embodiment: The present invention will be clearly described below with diagrams and detailed descriptions. After understanding the embodiments of the present invention, any person skilled in the art can make changes and modifications based on the techniques taught by the present invention without departing from the spirit and scope of the present invention.

[0051] The terms used herein are only for describing specific embodiments and are not intended to be limiting of the present invention. Singular forms such as "a", "this", "here", "this" and "the" as used herein also include plural forms.

[0052] The terms “first”, “second”, “third”, “fourth”, etc. used in this document do not specifically refer to an order or sequence, nor are they used to limit the present case. They are only used to distinguish components or operations described with the same technical terms.

[0053] As used herein, “connected” or “positioned” may refer to two or more components or devices being in direct physical contact with each other, or being in indirect physical contact with each other, or may refer to two or more components or devices operating or moving with each other.

[0054] The terms “include,” “including,” “have,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0055] The terms used in this document generally have the ordinary meaning of each term used in this field, in the context of the case and in the specific context, unless otherwise noted. Certain terms used to describe the present invention will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present invention.

[0056] The terms "upper" and "lower" used in this article are directional terms. In this case, they are only used to illustrate the positional relationship between the structures, and are not used to limit the protection plan of this case and the specific direction during actual implementation.

[0057] See attached Figures 5 to 8 As shown, a full-band high-quality Ruan with a sound beam and a sound tunnel comprises a resonance box, which includes a panel 1, a bottom panel 2 and side panels.

[0058] Among them, a first groove 6 and a second groove 7 are provided on the lower surface of the panel 1. The first groove 6 and the second groove 7 are cross-intersected and interconnected on the lower surface of the panel 1. The intersection is located at the center of the panel 1, thereby dividing the lower surface of the panel 1 into four upper resonance areas 1a.

[0059] An upper sound beam assembly 4 is fixedly provided in the middle of the lower surface of the panel 1 , and the upper sound beam assembly 4 includes a plurality of first strip sound beam components 4 a , which are arranged in pairs on both sides of the first groove 6 and both sides of the second groove 7 .

[0060] The first groove 6 and the second groove 7 form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel 1 respectively.

[0061] Among them, a third groove 9 and a fourth groove 10 are provided on the upper surface of the bottom plate 2. The third groove 9 and the fourth groove 10 are cross-intersected and interconnected on the upper surface of the bottom plate 2. The intersection is located at the center of the bottom plate 2, thereby dividing the upper surface of the bottom plate 2 into four lower resonance areas 2a.

[0062] A lower sound beam assembly 5 is fixedly provided in the middle of the upper surface of the bottom plate 2 , and the lower sound beam assembly 5 includes a plurality of second strip sound beam components 5 a , which are arranged in pairs on both sides of the third groove 9 and both sides of the fourth groove 10 .

[0063] The third groove 9 and the fourth groove 10 form a lower transverse sound tunnel and a lower longitudinal sound tunnel on the upper surface of the bottom plate 2 respectively.

[0064] Preferably, an upper connecting beam 4b is provided between two adjacent first strip-shaped sound beam components 4a, and the upper connecting beam 4b spans over the first groove 6 and the second groove 7, forming the upper sound beam assembly 4 in a tic-tac-toe shape; and each of the upper connecting beams 4b is located in the central area of ​​the lower surface of the panel 1. The four upper connecting beams 4b form a "mouth"-shaped reinforcement structure, which can further strengthen the bass area in the center of the panel 1, so as to further improve the sound quality of the bass area of ​​the Ruan.

[0065] Preferably, a lower connecting beam 5b is provided between two adjacent second strip-shaped sound beam components 5a, and the lower connecting beam 5b spans over the third groove 9 and the fourth groove 10, forming the lower sound beam assembly 5 in a tic-tac-toe shape; and each of the lower connecting beams 5b is located in the central area of ​​the upper surface of the bottom plate 2. The four lower connecting beams 5b form a "mouth"-shaped reinforcement structure, which can further strengthen the bass area in the center of the bottom plate 2, so as to further improve the sound quality of the bass area of ​​the Ruan.

[0066] The upper sound beam assembly 4 and the lower sound beam assembly 5 are arranged in an aligned manner in the up-down direction.

[0067] Preferably, the panel 1 and the bottom plate 2 include a high-pitched area at the periphery, a middle-pitched area at the middle section, and a low-pitched area at the center in terms of the sound frequency band; wherein the wall thickness of the panel 1 and the bottom plate 2 gradually increases from the outside to the inside, the wall thickness of the low-pitched area is greater than the wall thickness of the middle-pitched area, and the wall thickness of the middle-pitched area is greater than the wall thickness of the high-pitched area. With this design, by setting the thicker low-pitched area close to the center, the low-frequency vibration with a lower frequency and a larger amplitude can emit a more mellow and rounded bass in the low-pitched area of ​​the panel 1 and the bottom plate 2; by setting the thinner high-pitched area far from the center, the high-frequency vibration with a higher frequency and a smaller amplitude can emit a more transparent and bright high-pitched sound in the high-pitched area of ​​the panel 1 and the bottom plate 2. The upper sound beam assembly 4 and the lower sound beam assembly 5 are both located in the low-pitched area, which can further increase the load in the middle area of ​​the panel 1 and the bottom plate 2.

[0068] Preferably, the inner end thickness of the upper sound beam assembly 4 and the lower sound beam assembly 5 is greater than the outer end thickness. With this design, the central area of ​​the panel 1 and the bottom plate 2 can be strengthened.

[0069] Preferably, the first groove 6, the second groove 7, the third groove 9 and the fourth groove 10 are all arc grooves, so as to minimize the thickness change of the panel 1 and the bottom plate 2 and avoid affecting the resonance and vibration of the panel 1 and the bottom plate 2.

[0070] Among them, the lengths of the first groove 6 and the second groove 7 are both smaller than the width of the panel 1, and the lengths of the third groove 9 and the fourth groove 10 are both smaller than the width of the bottom plate 2; smooth transition surfaces are provided between the outer ends of the first groove 6 and the second groove 7 and the lower surface of the panel 1, so that the vibration is more evenly transmitted to the periphery of the panel 1; smooth transition surfaces are provided between the outer ends of the third groove 9 and the fourth groove 10 and the upper surface of the bottom plate 2, so that the vibration is more evenly transmitted to the periphery of the bottom plate 2.

[0071] The following is an explanation of other implementations and structural changes of the present invention:

[0072] 1. In the above embodiments, although the embodiments are given for the resonance box of the big Ruan, the present invention is not limited thereto, and may be a high-pitched Ruan, a small Ruan, a medium Ruan, a large Ruan, a low-pitched Ruan, etc. This is easy to understand and accept by those skilled in the art. The Ruan shown in the figure is only used for illustration, and its structure is not used to limit the protection scope of the present invention. Other Ruans with similar structures should be covered within the protection scope of the present invention if they adopt the technical features of the present invention.

[0073] 2. In the above embodiments, the number of the upper sound beam assembly 4 and the lower sound beam assembly 5 is not limited to one group, and can also be multiple groups in parallel or other designs that help to strengthen the load on the middle part of the panel 1 and the bottom plate 2, which is easily understood and accepted by those skilled in the art.

[0074] 3. In the above embodiments, the first strip-shaped sound beam member 4a or the second strip-shaped sound beam member 5a can be straight strip-shaped as shown in the figure, and are combined at 90 degrees in pairs and arranged in pairs on both sides of the groove.

[0075] Alternatively, the first strip-shaped sound beam member 4a or the second strip-shaped sound beam member 5a may also have an arc and include two straight sides, and the straight sides of two adjacent strip-shaped sound beam members are arranged in pairs on both sides of the groove.

[0076] 4. In the above embodiments, the first groove 6, the second groove 7, the third groove 9 and the fourth groove 10 are all arc-shaped grooves. However, the present invention is not limited thereto, and the grooves can be designed into other shapes, such as V-shaped, U-shaped, W-shaped and other concave structures. This is easily understood and accepted by those skilled in the art.

[0077] 5. In the above embodiment, when observing from the cross section of the resonance box, the upper sound beam assembly 4 and the lower sound beam assembly 5 are arranged in a corresponding position in the vertical direction (see Figure 3 ). However, the present invention is not limited thereto, and the arrangement may not be aligned, and may be specifically determined when the resonance box is debugging the timbre and sound quality. This is easily understood and accepted by those skilled in the art.

[0078] 6. In the above embodiment, the upper sound beam assembly 4 and the lower sound beam assembly 5 have the same shape and size. However, the present invention is not limited thereto, and the shape and size of the upper sound beam assembly 4 and the lower sound beam assembly 5 may also be different. Specifically, it can be determined when the resonance box is adjusted for timbre and sound quality. This is easily understood and accepted by those skilled in the art.

[0079] Aiming at the problem that the existing Ruan has poor timbre in the high pitch and not thick and round enough in the low pitch, the present invention conducts in-depth discussion and research on the design and sound-generating mechanism of the Ruan, and finds out that the main reason for the poor timbre in the high and low pitch of the existing Ruan is due to the unreasonable design of the panel and the bottom plate. Based on this, the inventor breaks the constraints of the previous Ruan composition design and boldly proposes the improved design scheme of the present invention. This improved design scheme changes the panel and the bottom plate from the previous free vibration mode to the current standard vibration mode, and solves the problem that the Ruan has poor timbre in the high pitch and not thick and round enough in the low pitch from the perspective of vibration, resonance, and sound generation. Practice has proved that the improved design scheme has outstanding substantive characteristics and significant technical progress, and has achieved obvious technical effects.

[0080] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A full-band high-quality Ruan with a sound beam and a sound tunnel, characterized by: The resonance box comprises a panel (1), a bottom panel (2) and side panels; A first groove (6) and a second groove (7) are provided on the lower surface of the panel (1); the first groove (6) and the second groove (7) are cross-intersected and mutually connected on the lower surface of the panel (1); the intersection point is located at the center of the panel (1), thereby dividing the lower surface of the panel (1) into four upper resonance areas (1a); An upper sound beam assembly (4) is fixedly provided in the middle of the lower surface of the panel (1), the upper sound beam assembly (4) comprising a plurality of first strip-shaped sound beam components (4a), the first strip-shaped sound beam components (4a) being arranged in pairs on both sides of the first groove (6) and on both sides of the second groove (7); The first groove (6) and the second groove (7) respectively form an upper transverse sound tunnel and an upper longitudinal sound tunnel on the lower surface of the panel (1); The panel (1) is divided into a high-pitched area at the periphery, a mid-pitched area at the middle section, and a low-pitched area at the center in terms of the sound frequency band; The wall thickness of the panel (1) gradually increases from the outside to the inside, the wall thickness of the bass region is greater than the wall thickness of the mid-range region, and the wall thickness of the mid-range region is greater than the wall thickness of the treble region; The upper sound beam assembly (4) is located in the bass region.

2. The full-band high-quality Ruan according to claim 1, characterized in that: A third groove (9) and a fourth groove (10) are provided on the upper surface of the bottom plate (2); the third groove (9) and the fourth groove (10) are cross-intersected and mutually connected on the upper surface of the bottom plate (2); the intersection point is located at the center of the bottom plate (2), thereby dividing the upper surface of the bottom plate (2) into four lower resonance areas (2a); A lower sound beam assembly (5) is fixedly provided in the middle of the upper surface of the bottom plate (2), the lower sound beam assembly (5) comprising a plurality of second strip-shaped sound beam components (5a), the second strip-shaped sound beam components (5a) being arranged in pairs on both sides of the third groove (9) and on both sides of the fourth groove (10); The third groove (9) and the fourth groove (10) respectively form a lower transverse sound tunnel and a lower longitudinal sound tunnel on the upper surface of the bottom plate (2).

3. The full-band high-quality Ruan according to claim 2, characterized in that: The upper sound beam assembly (4) and the lower sound beam assembly (5) are arranged in an aligned manner in the up and down directions.

4. The full-band high-quality Ruan according to claim 1, characterized in that: An upper connecting beam (4b) is provided between two adjacent first strip-shaped sound beam components (4a), and the upper connecting beam (4b) spans above the first groove (6) and the second groove (7), forming the upper sound beam assembly (4) in a tic-tac-toe shape; and each of the upper connecting beams (4b) is located in the central area of ​​the lower surface of the panel (1).

5. The full-band high-quality Ruan according to claim 2, characterized in that: A lower connecting beam (5b) is provided between two adjacent second strip-shaped sound beam components (5a), and the lower connecting beam (5b) spans over the third groove (9) and the fourth groove (10), forming the lower sound beam assembly (5) in a tic-tac-toe shape; and each of the lower connecting beams (5b) is located in the central area of ​​the upper surface of the bottom plate (2).

6. The full-band high-quality Ruan according to claim 2, characterized in that: The bottom plate (2) is divided into a high-pitched area at the periphery, a middle-pitched area at the middle section, and a low-pitched area at the center in terms of the sound frequency band; The wall thickness of the bottom plate (2) gradually increases from the outside to the inside, and the wall thickness of the bass region is greater than that of the mid-range region, and the wall thickness of the mid-range region is greater than that of the treble region; The lower sound beam assembly (5) is located in the bass region.

7. The full-band high-quality Ruan according to claim 2, characterized in that: The thickness of the inner ends of the upper sound beam component (4) and the lower sound beam component (5) are both greater than the thickness of the outer ends.

8. The full-band high-quality Ruan according to claim 2, characterized in that: The first groove (6), the second groove (7), the third groove (9) and the fourth groove (10) are all arc-shaped grooves.

9. The full-band high-quality Ruan according to claim 2, characterized in that: The lengths of the first groove (6) and the second groove (7) are both smaller than the width of the panel (1), and the lengths of the third groove (9) and the fourth groove (10) are both smaller than the width of the bottom plate (2); A smooth transition surface is provided between the outer ends of the first groove (6) and the second groove (7) and the lower surface of the panel (1); and a smooth transition surface is provided between the outer ends of the third groove (9) and the fourth groove (10) and the upper surface of the bottom plate (2).

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