Resonance cavity structure of seven-stringed plucked instrument body

Abstract

The utility model provides a resonance cavity structure of a seven-stringed plucked instrument body. According to the seven-stringed plucked instrument body, a resonance cavity is defined by a panel and a bottom plate with the same outer edges; wherein the panel is arc-shaped and is formed by bonding an inner panel and an outer panel with the same outer edges; the bottom plate is in a flat plate shape and is formed by bonding an inner bottom plate and an outer bottom plate with the same outer edges. The inner panel and the inner bottom plate enclose to form a seven-stringed plucked instrument cavity. The seven-stringed plucked instrument body resonance cavity structure provided by the utility model can effectively solve the problems that seven-string sound flutters, one string does not enter a chamber, the sound pressing uniformity is insufficient, the sound reverberation is insufficient, and the sound frequency is mixed by arranging a plurality of sound guide grooves in the resonance cavity structure of the seven-stringed plucked instrument body. Meanwhile, a composite environment-friendly material is used, and the problems that wood is prone to cracking and deformation, scarce and high in cost, and the environment is damaged in the machining process are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of guqin manufacturing, and relates to a guqin body structure made of composite materials, in particular to a guqin body resonance cavity structure. Background Art

[0002] The guqin, also known as the yaoqin, yuqin, sitong, and seven-stringed qin, is a traditional plucked string instrument of the Han ethnic group in China. It originated during the Neolithic Age (1000-6000 BC), boasting a history of at least 8,000 years. The guqin's creator is generally considered to be Taihao Fuxi, the first of the Three Sovereigns and a Neolithic tribal leader, who revered him as the ancestor of the guqin. The guqin belongs to the eight musical instruments (metal, stone, silk, bamboo, gourd, earth, leather, and wood) and boasts a wide range of tones, a deep timbre, and a long-lasting sound.

[0003] The internal structure of the traditional guqin is prone to frequency mixing, resulting in a floating sound, an uncomfortable feel at the second and third frets, uneven keypressing, and insufficient reverberation. This is also due to production errors caused by variations in wood, long production cycles, cracking and deformation caused by wet and dry environments, and the scarcity of wood, as well as the environmentally unfriendly processing involved.

[0004] Therefore, how to combine modern technology to change the above problems becomes imminent in the field of guqin manufacturing. Utility Model Content

[0005] In order to solve the above problems, the purpose of this utility model is to provide a guqin body resonance cavity structure, which can effectively solve the problems of the seven strings sounding floating, one string not entering the chamber, insufficient sound uniformity, insufficient sound reverberation, and sound mixing.

[0006] In order to achieve the above-mentioned object, the utility model provides a guqin body resonance cavity structure, wherein the guqin body is formed by a top plate and a bottom plate with the same outer edges to enclose a resonance cavity;

[0007] The panel is arc-shaped and is composed of an inner panel and an outer panel with the same outer edges bonded together; the bottom plate is flat and is composed of an inner bottom plate and an outer bottom plate with the same outer edges bonded together;

[0008] The outer surface of the outer panel is provided with a yueshan near the guqin head, and the inner panel is provided with a yueshan root protruding toward the resonance cavity at a position corresponding to the yueshan of the outer panel; and a through string eye is provided from the yueshan through the panel to the yueshan root.

[0009] The middle part of the inner panel is provided with a long strip of dragon-shaped nayin protruding toward the resonance cavity along the long axis of the guqin, and the inner panel is provided with a long strip of phoenix-shaped nayin protruding toward the resonance cavity along the long axis of the guqin near the tail of the guqin.

[0010] The inner bottom plate is provided with an inner long hole in the middle of the inner bottom plate along the long axis of the guqin; the inner bottom plate is provided with an inner short hole in the tail of the guqin along the long axis of the guqin;

[0011] The outer bottom plate has an outer long hole in the middle along the long axis of the guqin; the outer short hole is formed at the tail of the guqin along the long axis of the guqin; the inner long hole and the outer long hole are of the same size and position, forming a dragon pool; the inner short hole and the outer short hole are of the same size and position, forming a phoenix marsh.

[0012] The size and position of the Dragon Pool correspond to the Dragon Na Yin of the inner panel; the size and position of the Phoenix Marsh correspond to the Phoenix Na Yin of the inner panel;

[0013] A rectangular inner zhen pool hole is opened at a position of the inner bottom plate corresponding to the yueshan root, and a rectangular outer zhen pool hole is opened at a position of the outer bottom plate corresponding to the inner bottom plate; the inner zhen guard hole and the outer zhen pool hole form a zhen pool;

[0014] The inner bottom plate is provided with six sound guide grooves parallel to the long axis of the guqin, facing the guqin cavity. Among them, the four middle ones are long sound guide grooves, extending from one side of the inner peg hole to the guqin's tail. The two middle long sound guide grooves pass through the inner long hole and the inner short hole. A goose foot root is provided on the outermost side of each of the four long sound guide grooves near the guqin's tail. The two sound guide grooves on both sides are short sound guide grooves. The two short sound guide grooves extend along the edge of the inner long hole near the guqin's head to the goose foot root.

[0015] A foot well is provided at a position corresponding to the goose foot root of the outer bottom plate and the inner bottom plate;

[0016] The outer bottom plate is provided with an arc-shaped peg guard at one end of the guqin head for supporting the guqin body;

[0017] An upper snap-in is provided at the edge of the inner panel, and a lower snap-in is provided at a corresponding position on the edge of the inner bottom plate, so that the panel and the bottom plate can be connected with each other by plug-in snap-in bonding.

[0018] As mentioned above, the depth of the sound guide groove is one third of the thickness of the inner bottom plate.

[0019] As mentioned above, the base is a solid block that abuts against the inner bottom plate.

[0020] As mentioned above, the material of the inner panel is a polymer material; the material of the inner bottom plate is a polymer material.

[0021] Preferably, the high molecular polymer material is polypropylene (PP) or acrylonitrile-butadiene-styrene copolymer (ABS).

[0022] The inner panel is manufactured by a high-pressure injection molding method; the inner bottom plate is manufactured by a high-pressure injection molding method.

[0023] As mentioned above, the outer panel is made of carbon fiber composite material, and the outer bottom plate is made of carbon fiber composite material.

[0024] The outer panel is manufactured by thermoplastic injection molding, and the outer bottom plate is manufactured by thermoplastic injection molding.

[0025] As mentioned above, the outer surface of the outer panel and the outer surface of the outer bottom plate are both covered with a paint layer.

[0026] The beneficial effects of the present invention are:

[0027] The utility model provides a guqin body resonance cavity structure, in which a plurality of sound guide grooves are provided, and the overall structure can effectively solve the problems of floating sound of seven strings, one string not entering the chamber, insufficient uniformity of pressing notes, insufficient sound reverberation, and sound mixing. The utility model adopts carbon fiber materials and polymer materials to replace wood, which solves the problems of wood being easy to crack and deform, wood being scarce, high cost, and environmental damage during the processing. At the same time, the use of new materials also overcomes the problems of guqin production errors caused by the dry and wet environment of wood and the long manufacturing cycle. The cost of carbon fiber materials and polymer materials is lower than that of wood, which also reduces the production cost of guqin, shortens the production cycle, simplifies the manufacturing process, and makes the sound quality of the produced guqin more stable. If necessary, the lacquer process can be used to cover the surface of the guqin body with a lacquer layer, so that the guqin can be produced using modern technology without losing its traditional beauty. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is an oblique upper view of the resonance cavity structure of the guqin body provided by the present invention.

[0029] Figure 2 This is an oblique downward view of the resonance cavity structure of the guqin body provided by the utility model.

[0030] Figure 3 This is a disassembled diagram of the panel of the guqin body resonance cavity structure provided by the present invention.

[0031] Figure 4 This is a disassembled diagram of the bottom plate of the guqin body resonance cavity structure provided by the present invention.

[0032] Figure 5 This is a top view of the outer panel of the guqin body resonance cavity structure provided by the present invention.

[0033] Figure 6 This is a bottom view of the inner panel of the guqin body resonance cavity structure provided by the present invention.

[0034] Figure 7This is a top view of the inner bottom plate of the guqin body resonance cavity structure provided by the present invention.

[0035] Figure 8 This is a bottom view of the outer bottom plate of the guqin body resonance cavity structure provided by the present invention.

[0036] Reference numerals

[0037] A: Top panel; B: Bottom panel; C: Guqin body; A1: Inner top panel; A2: Outer top panel; B1: Inner bottom panel; B2: Outer bottom panel; 1: Yueshan; 11: String eye; 12: Zhen guard; 13: Upper buckle; 14: Lower buckle; 2: Yueshan root; 3: Long Na Yin; 4: Feng Na Yin; 5: Long Chi; 51: Inner long hole; 52: Outer long hole; 6: Feng Zhao; 61: Inner short hole; 62: Outer short hole; 7: Zhen Chi; 71: Inner Zhen Chi hole; 72: Outer Zhen Chi hole: 8a, 8b, 8c, 8d: Long sound guide groove; 8e, 8f: Short sound guide groove; 9: Yanzu root; 10: Zu Chi. DETAILED DESCRIPTION

[0038] The following is a detailed and complete description of the embodiments of the present invention so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0039] It should be noted that the positions of Yueshan, Qinhui, Longchi, Fengzhao, Huzhen, Zhenchi, Xianyan and Yanzu in the body of the guqin are the specified positions of the traditional guqin.

[0040] like Figures 1 to 8 As shown, the present invention provides a guqin body resonance cavity structure, wherein the guqin body C is formed by a panel A and a bottom plate B having the same outer edges to enclose the resonance cavity.

[0041] The panel A is arc-shaped and is composed of an inner panel A1 and an outer panel A2 having the same outer edges bonded together; the bottom plate B is flat and is composed of an inner bottom plate B1 and an outer bottom plate B2 having the same outer edges bonded together.

[0042] The outer surface of the outer panel A2 is provided with a yueshan 1 near the head of the guqin, and the inner panel A1 is provided with a yueshan root 2 protruding toward the resonance cavity at a position corresponding to the yueshan 1 of the outer panel A2; a through string eye 11 is provided from the yueshan to the yueshan root.

[0043] Since the yueshan root is a solid structure, it is equivalent to partially increasing the strength of the guqin's panel. At the same time, it disperses the force of the pegs tightening the strings from around the string holes of the guqin's panel to the entire yueshan root, reducing the local resistance of the guqin's panel and helping to protect the guqin's panel from the inside.

[0044] The middle part of the inner panel A1 is provided with a long strip of dragon-shaped sound 3 protruding toward the resonance cavity along the long axis of the guqin. The inner panel A1 is provided with a long strip of phoenix-shaped sound 4 protruding toward the resonance cavity near the tail of the guqin along the long axis of the guqin.

[0045] The settings of Long Na Yin and Feng Na Yin mainly serve to radiate sound waves outward. During the radiation process, certain frequency components will be enhanced or attenuated, making the guqin's tone more three-dimensional.

[0046] The inner bottom plate B1 has an inner long hole 51 formed in the middle thereof along the long axis of the guqin; the inner bottom plate B1 has an inner short hole 61 formed in the tail thereof along the long axis of the guqin.

[0047] The outer bottom plate B2 has an elongated outer hole 52 in the middle along the long axis of the guqin; the outer bottom plate has an elongated outer short hole 62 at the tail of the guqin along the long axis; the inner long hole 51 and the outer long hole 52 are the same in size and position, and together constitute the dragon pool 5; the inner short hole 61 and the outer short hole 62 are the same in size and position, and together constitute the phoenix marsh 6.

[0048] The size and position of the dragon pool 5 correspond to the dragon na yin 3 of the inner panel; the size and position of the phoenix marsh 6 correspond to the phoenix na yin 4 of the inner panel; Figure 8 As shown, the corresponding Dragon Na Yin and Phoenix Na Yin can be seen from the outer bottom plate.

[0049] The inner bottom plate B1 is provided with a rectangular inner zhen pool hole 71 at a position corresponding to the yueshan root, and the outer bottom plate B2 is provided with a rectangular outer zhen pool hole 72 at a position corresponding to the inner bottom plate B1; the inner zhen pool hole and the outer zhen pool hole form the zhen pool 7; Figure 8 As shown, the corresponding base of the shank and the eye of the chord can be seen from the outer bottom plate.

[0050] The inner bottom plate B1 is provided with six sound guide grooves parallel to the long axis of the guqin facing the direction of the guqin cavity, among which the four middle ones are long sound guide grooves 8a, 8b, 8c, and 8d, which are extended from the corresponding position on one side of the inner peg hole 71 to the tail of the guqin, and the two middle long sound guide grooves 8b and 8c pass through the inner long hole 51 and the inner short hole 61; a goose foot root 9 is provided at the outermost side of the four long sound guide grooves near the tail of the guqin, and the two sound guide grooves on both sides are short sound guide grooves 8e and 8f; the two short sound guide grooves 8e and 8f are extended along the edge of the inner long hole near the head of the guqin to the goose foot root 9; the setting of the sound guide grooves can effectively solve the problems of the seven-string sound being floating, one string not entering the chamber, insufficient sound uniformity, insufficient sound reverberation, and sound mixing.

[0051] A hole-shaped foot pool 10 is opened at a position corresponding to the goose foot root 9 of the outer bottom plate B2 and the inner bottom plate B1; the foot pool is used to accommodate the goose foot.

[0052] Traditionally, the goose-foot base of a guqin is fixed to the top of the instrument. This new design fixes the goose-foot base to the baseboard, ensuring more even notes. Because the goose-foot base is located on the baseboard, the instrument's vibrations enhance certain frequencies, further improving the directivity of the tone. This also reduces manufacturing complexity and increases guqin production efficiency.

[0053] The outer bottom plate B2 is located at one end of the guqin head and is provided with an arc-shaped peg guard 12 for supporting the guqin body.

[0054] An upper snap 13 is provided at the edge of the inner panel A1, and a lower snap 14 is provided at the corresponding position of the edge of the inner bottom plate B1, so that the panel and the bottom plate can be connected by plug-in snap bonding.

[0055] The upper and lower clips make the top and bottom of the guitar body correspond to each other, mainly for positioning, and the edges are sealed by gluing. Since the outer top and bottom are relatively thin, the upper and lower clips are respectively set on the inner top and bottom. Figure 2 The edge of the middle panel is relatively thin, so the outer panel edge line is not clearly shown in the figure.

[0056] The inner panel is made of a high-pressure injection-molded polymer material, such as polypropylene or acrylonitrile-butadiene-styrene copolymer; the inner bottom plate is made of a high-pressure injection-molded polymer material, such as polypropylene or acrylonitrile-butadiene-styrene copolymer.

[0057] The outer panel is made of a carbon fiber composite material formed by thermoplastic injection molding, and the outer bottom plate is made of a carbon fiber composite material formed by thermoplastic injection molding.

[0058] The outer surface of the outer panel and the outer surface of the outer bottom plate are covered with a lacquer layer using a lacquer coloring process, giving the guqin a more ancient texture.

[0059] The inner panel is prepared by a high-pressure injection molding method; the inner bottom plate is prepared by a high-pressure injection molding method.

[0060] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A guqin body resonance cavity structure, characterized in that: The guqin's body is enclosed by a top plate and a bottom plate with the same outer edges to form a resonance cavity; The panel is arc-shaped and is composed of an inner panel and an outer panel with the same outer edges bonded together; the bottom plate is flat and is composed of an inner bottom plate and an outer bottom plate with the same outer edges bonded together; The outer surface of the outer panel is provided with a yueshan near the guqin head, and the inner panel is provided with a yueshan root protruding toward the resonance cavity at a position corresponding to the yueshan of the outer panel; and a through string eye is provided from the yueshan through the panel to the yueshan root. The middle part of the inner panel is provided with a long strip of dragon-shaped nayin protruding toward the resonance cavity along the long axis of the guqin, and the inner panel is provided with a long strip of phoenix-shaped nayin protruding toward the resonance cavity along the long axis of the guqin near the tail of the guqin. The inner bottom plate is provided with an inner long hole in the middle of the inner bottom plate along the long axis of the guqin; the inner bottom plate is provided with an inner short hole in the tail of the guqin along the long axis of the guqin; The outer bottom plate has an outer long hole in the middle along the long axis of the guqin; the outer short hole is formed at the tail of the guqin along the long axis of the guqin; the inner long hole and the outer long hole are of the same size and position, forming a dragon pool; the inner short hole and the outer short hole are of the same size and position, forming a phoenix marsh. The size and position of the Dragon Pool correspond to the Dragon Na Yin of the inner panel; the size and position of the Phoenix Marsh correspond to the Phoenix Na Yin of the inner panel; A rectangular inner zhen pool hole is opened at a position of the inner bottom plate corresponding to the yueshan root, and a rectangular outer zhen pool hole is opened at a position of the outer bottom plate corresponding to the inner bottom plate; the inner zhen pool hole and the outer zhen pool hole form a zhen pool; The inner bottom plate is provided with six sound guide grooves parallel to the long axis of the guqin, facing the guqin cavity. Among them, the four middle ones are long sound guide grooves, extending from one side of the inner peg hole to the guqin's tail. The two middle long sound guide grooves pass through the inner long hole and the inner short hole. A goose foot root is provided on the outermost side of each of the four long sound guide grooves near the guqin's tail. The two sound guide grooves on both sides are short sound guide grooves. The two short sound guide grooves extend along the edge of the inner long hole near the guqin's head to the goose foot root. A foot well is provided at a position corresponding to the goose foot root of the outer bottom plate and the inner bottom plate; The outer bottom plate is provided with an arc-shaped peg guard at one end of the guqin head for supporting the guqin body; An upper snap-in is provided at the edge of the inner panel, and a lower snap-in is provided at a corresponding position on the edge of the inner bottom plate, so that the panel and the bottom plate can be connected with each other by plug-in snap-in bonding.

2. The guqin body resonance cavity structure according to claim 1, characterized in that: The depth of the sound guide groove is one third of the thickness of the inner bottom plate.

3. The guqin body resonance cavity structure according to claim 1, characterized in that: The mountain root is a solid block and abuts against the inner bottom plate.

4. The guqin body resonance cavity structure according to claim 1, characterized in that: The material of the inner panel is a polymer material; the material of the inner bottom plate is a polymer material.

5. The guqin body resonance cavity structure according to claim 4, characterized in that: The high molecular polymer material is polypropylene or acrylonitrile-butadiene-styrene copolymer.

6. The guqin body resonance cavity structure according to claim 1, characterized in that: The outer panel is made of carbon fiber composite material, and the outer bottom plate is made of carbon fiber composite material.

7. The guqin body resonance cavity structure according to claim 1, characterized in that: The outer surface of the outer panel and the outer surface of the outer bottom plate are both covered with a paint layer.

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