Musical instrument structure of string-copper column combined sound production transmission system and structure of guqin and structure of guzheng

Abstract

The instrument structure of the string-copper-pillar sound transmission system includes the structure of the guqin and guzheng, including the body, which is a hollow box. The top of the body is a soundboard 6, and the bottom of the body is a soundboard 7. Several strings 1 are fixed to the top of the soundboard 6. The soundboard 6 is provided with a first sound hole 8. The top of the soundboard 7 is fixedly connected to the bottom copper plate 4 of the pillar group. The bottom of several pillar rods 3 are fixedly connected to the top of the bottom copper plate 4. The pillar rods 3 extend out of the sound amplification diaphragm 12. The top of the pillar rods 3 is fixedly connected to the nozzle 2. The nozzle 2 extends out of the body through the first sound hole 8 on the soundboard 6. The nozzle 2 abuts against the strings 1. The nozzle 2 is fixedly connected to the spring bridge 5. The spring bridge 5 is fixedly connected to the soundboard 6.

Description

Technical Field

[0001] This utility model relates to an amplification device for the vibration sound transmission system of the guqin, belonging to the field of musical instruments, specifically involving the instrument structure of the string and copper pillar combination sound transmission system, as well as the structure of the guqin and the guzheng. Background Technology

[0002] Currently, the generally accepted sound transmission system of the guqin consists of: strings, bridge, dragon's teeth (a type of joint), soundboard, top and bottom pillars, and backboard. The transmission process is as follows: the sound energy from the vibrating strings is transmitted through the bridge and dragon's teeth to the soundboard, which then transmits the energy through the top and bottom pillars within the soundbox to the backboard, thus causing the entire guqin to vibrate and resonate. Because the sound transmission system of the guqin has a long transmission path, the music played on the guqin has a low volume and a dark timbre.

[0003] Vibration produces sound with long energy transmission distances and high sound consumption, such as... Figure 10 A diagram illustrating the distance and timing difference in sound transmission from point C on the guqin string. When playing the guqin from any point C, the sound energy is transmitted through two paths, left and right, as follows:

[0004] 1. Point C → Yueshan → Panel → Tianzhu → Base Plate

[0005] 2. Point C → Dragon's Gums → Panel → Ground Column → Base Plate

[0006] Paths 1 and 2 converge and resonate at point D. As can be seen from the diagram, paths 1 and 2 are long and have high sound loss, resulting in a dull resonance sound. Utility Model Content

[0007] To solve the above problems, this utility model provides a musical instrument structure, a guqin structure, and a guzheng structure for a string-copper pillar combined sound transmission system.

[0008] The purpose of this utility model is achieved in the following way: a musical instrument structure of a string-copper pillar combination sound transmission system, including a body, which is a hollow box in the middle, a panel 6 at the top of the body, a soundboard 7 at the bottom of the body, several strings 1 fixed at the top of the panel 6, a first sound hole 8 provided on the panel 6, a pillar group bottom copper plate 4 fixedly connected to the top of the soundboard 7, several pillar rods 3 fixedly connected to the bottom of the pillar group bottom copper plate 4, the pillar rods 3 extending out of the amplifying steel diaphragm 12, a pillar nozzle 2 fixedly connected to the top of the pillar rods 3, the pillar nozzle 2 passing through the first sound hole 8 on the panel 6 and extending out of the body, the pillar nozzle 2 abutting against the strings 1, the pillar nozzle 2 fixedly connected to the spring bridge 5, and the spring bridge 5 fixedly connected to the panel 6.

[0009] A guqin structure including the above-mentioned instrument structure, wherein the instrument body is the body of the guqin, the top of the soundboard 6 has a bridge 10 and a dragon's teeth 11 fixed at both ends along the length direction, the two ends of the string 1 are fixed to the bridge 10 and the dragon's teeth 11 respectively, and a first sound hole 8 is provided on the soundboard 6 on the side of the bridge 10; the top of the soundboard 7 is fixedly connected to the bottom copper plate 4 of the pillar group, and several pillars 3 are fixed in sequence on the bottom copper plate 4 of the pillar group, and the top of each pillar 3 has a pillar mouth 2 that abuts against a string 1.

[0010] The width of the soundboard 7 is greater than the width of the panel 6. The soundboard 7 and the two sides of the panel 6 in the width direction are respectively connected by an inclined side panel 15. The panel 6 forms an arched structure with a high middle and low sides along the width direction. The first sound hole 8 is a strip hole set along the width direction of the panel 6.

[0011] A second sound hole 9 is provided on the panel 6 on the side of the 11. The second sound hole 9 is a strip hole provided along the width direction of the panel 6.

[0012] The length of the instrument body is 1400mm~1450mm, the height of the instrument body is 80mm~120mm, the width of the soundboard 7 is 250mm~350mm, and the width of the soundboard 6 is 210mm~220mm.

[0013] The post 3 extends the amplifying steel diaphragm 12 inside the body of the instrument.

[0014] The spring bridge 5 includes a cylindrical main structure, which is sleeved on the outside of the nozzle 2. One end of a spring sheet is fixed on each side of the cylindrical structure, and the other end of the spring sheet crosses the first sound hole 8 and abuts against the panel 6.

[0015] There are seven strings, seven spring bridges, seven mouthpieces, seven post rods, and seven amplifying steel diaphragms, forming seven sets of conduction structures.

[0016] in:

[0017] Seven strings 1, each string is 1340mm~1470mm long;

[0018] Seven post tips 2, each post tip 2 has a post diameter of 6mm and a hemisphere at the top with the same diameter as the post. The apex of the hemisphere is a semi-groove hole with the same direction as the string 1 and a diameter of 2mm. The post tips are arranged in pairs with equal heights: the first and seventh post tips 2 are 37mm high; the second and sixth post tips 2 are 52mm high; the third and fifth post tips 2 are 65mm high; and the fourth post tip 2 is 75mm high on its own.

[0019] Seven pillars 3, each pillar 3 is 100mm high, with a circular top with a diameter of 6mm and an elliptical base with a major axis of 30mm and a minor axis of 20mm. The pillars 3 are arranged in a line along the minor axis and fixed in the middle of the copper plate 4 at the bottom of the pillar group. The pillar body of the pillar 3 has an arc-shaped variable diameter structure from the top to the bottom.

[0020] The base of the column assembly consists of four copper plates, each measuring 160mm in length, 50mm in width, and 3mm in thickness.

[0021] Seven spring bridges 5, the cylindrical main structure of the spring bridge 5 has a diameter of 6mm, a height of 5mm, and a thickness of 2mm; the spring plate of the spring bridge 5 is 30mm long, 10mm wide, and 2mm thick;

[0022] Seven amplifying steel diaphragms 12, each diaphragm is 200mm long, 70mm wide on the left and right sides, 80mm wide in the middle, and 0.5mm thick. There is an arc-shaped hole in the middle of the amplifying steel diaphragm 12, a 6mm circular hole on the top surface, and an elliptical hole with a major axis of 30mm and a minor axis of 20mm on the bottom surface. The internal shape of the hole is such that the major axis is aligned with the diaphragm surface and the minor axis is perpendicular to the diaphragm surface. The overall shape matches the external shape of the column rod 3.

[0023] The combination of seven column tips 2, seven column rods 3, and a column base copper plate 4 is a whole, and the material is brass.

[0024] The seven bridge posts 2, seven spring bridges 5, seven pillars 3, seven sound-amplifying steel membranes 12, and a copper plate at the bottom of the pillar assembly 4 together form the string and copper pillar combination system for transmitting sound in the guqin.

[0025] A guzheng structure including the above-mentioned instrument structure, wherein the instrument body is the body of the guzheng, and the top of the panel 6 is fixed with the Yue Shan 10 and Long Yin 11 at both ends along the length direction, and the two ends of the string 1 are fixed to the Yue Shan 10 and Long Yin 11 respectively.

[0026] The panel 6 is 1830 mm long. The two ends along the length of the panel 6 are a large end and a small end, respectively. The width of the large end decreases from the small end to the large end. The width of the large end is 330-350 mm and the width of the small end is 280-290 mm. The first sound hole 8 and the second sound hole 9 are respectively provided in the upper mountain 10 and the dragon gum 11 of the panel 6. The first sound hole 8 is 250±20 mm long and 10±2 mm wide, and the second sound hole 9 is 150±20 mm long and 6±1 mm wide.

[0027] The soundboard 7 is 1830 mm long. The two ends along the length of the soundboard 7 are the large end and the small end, respectively. The width of the large end decreases from the small end to the large end. The width of the large end is 430-450 mm and the width of the small end is 380-390 mm.

[0028] The side panel between panel 6 and soundboard 7 is 110 mm high;

[0029] The string 1, spring bridge 5, mouthpiece 2, post 3, and sound amplification diaphragm 12 are all twenty-one, forming twenty-one sets of conduction structures;

[0030] in:

[0031] Each string is 1830 mm long.

[0032] Pivot 2 is a cylinder with a diameter of 6 mm. The top protrudes into a hemisphere with the same diameter as the cylinder. The apex of the hemisphere is a semi-groove hole with a diameter of 2 mm, which is in the same direction as string 1. Twenty-one pivots 2 are arranged in sequence, with each pair of pivots 2 having the same height: the first and twenty-first pivots 2 are 37 mm high, the second and twentieth pivots 2 are 41 mm high, the third and nineteenth pivots 2 are 45 mm high, the fourth and eighteenth pivots 2 are 49 mm high, the fifth and seventeenth pivots 2 are 53 mm high, the sixth and sixteenth pivots 2 are 57 mm high, the seventh and fifteenth pivots 2 are 61 mm high, the eighth and fourteenth pivots 2 are 65 mm high, the ninth and thirteenth pivots 2 are 69 mm high, the tenth and twelfth pivots 2 are 73 mm high, and the eleventh pivot 2 is 75 mm high on its own.

[0033] Post 3, each post 3 is 100 mm high, with a 6 mm diameter circular top and an 11 mm diameter circular base, and the shaft is tapered from top to bottom;

[0034] The sound amplification diaphragm 12 is 200 mm long, 0.5 mm thick, 70 mm wide on both sides and 80 mm wide in the middle. It is sloping downward from the top. There is a conical hole in the middle of the sound amplification diaphragm. The upper hole has a diameter of 6 mm, the lower hole has a diameter of 11 mm, and the middle is conical to the bottom. It fits into the outer sleeve of the column rod 3.

[0035] The base of the column assembly has four copper plates, each 250 mm long, 30 mm wide, and 3 mm thick.

[0036] The guzheng consists of 21 mouthpieces 2, 21 necks 3, 21 spring bridges 5, and a base copper plate 4, which are all integrated into one unit and are made of brass.

[0037] The 21 mouthpieces, 21 necks, 21 spring bridges, 21 sound-amplifying steel membranes, and 4 copper plates at the bottom of the bridge assembly together form the string and copper bridge assembly system for transmitting sound in the guzheng.

[0038] Compared to existing technologies, the strings of this invention achieve rapid short-distance transmission of vibrations through a post connected simultaneously to the soundboard and the top plate, enabling the soundboard and the top plate to resonate more quickly. Attached Figure Description

[0039] Figure 1 This is a top view structural diagram of the guqin (a seven-stringed zither) of this utility model.

[0040] Figure 2 ,yes Figure 1 The longitudinal section AA sectional view, the first embodiment.

[0041] Figure 3 ,yes Figure 1 The longitudinal section BB sectional view.

[0042] Figure 4 This is a schematic diagram of the sound transmission system structure of the string-copper pillar combination amplification, the second embodiment.

[0043] Figure 5 This is a schematic diagram of a spring bridge.

[0044] Figure 6 This is a schematic diagram of seven pillars.

[0045] Figure 7 This is a schematic diagram of a column.

[0046] Figure 8 This is a schematic diagram of the copper plate at the bottom of the column assembly.

[0047] Figure 9 This is a schematic diagram of the amplifying diaphragm and its internal structure.

[0048] Figure 10 This is a schematic diagram showing the difference in sound transmission distance and resonance between the original C point of the guqin.

[0049] In the diagram, 1 is the string; 2 is the mouthpiece; 3 is the post; 4 is the base plate of the post assembly; 5 is the spring bridge; 6 is the soundboard; 7 is the soundboard; 8 is the first sound hole; 9 is the second sound hole; 10 is the bridge; 11 is the nut; 12 is the sound-amplifying diaphragm; 13 is the top post; 14 is the bottom post; and 15 is the side panel. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0052] As attached Figure 1-9 As shown, a musical instrument structure of a string-copper-column combined sound conduction system includes a body, which is a hollow box. The top of the body is a panel 6, and the bottom of the body is a soundboard 7. Several strings 1 are fixed to the top of the panel 6. A first sound hole 8 is provided on the panel 6. The top of the soundboard 7 is fixedly connected to a column base copper plate 4. The top of the column base copper plate 4 is fixedly connected to the bottom ends of several column rods 3. The column rods 3 extend out of the amplifying steel diaphragm 12. The top of the column rods 3 is fixedly connected to a nozzle 2. The nozzle 2 extends out of the body through the first sound hole 8 on the panel 6. The nozzle 2 abuts against the strings 1. The nozzle 2 is fixedly connected to a spring bridge 5. The spring bridge 5 is fixedly connected to the panel 6.

[0053] This string-copper-pillar sound transmission system is suitable for stringed instruments, especially the guqin and guzheng mentioned later.

[0054] Here, the guqin (a seven-stringed zither) is selected as the preferred option, and will be described in detail:

[0055] A guqin structure including the above-mentioned instrument structure, wherein the instrument body is the qin body, and the top of the top of the soundboard 6 is fixed with Yueshan 10 and Longyin 11 at both ends along the length direction. Yueshan 10 and Longyin 11 are the original technical names of the structure in the guqin structure. In this application, the names are retained and are specifically manifested in the structure as strip-shaped structures fixed to the soundboard 6. The strip-shaped structures are provided with pillars or holes for binding the strings 1. The two ends of the strings 1 are fixed to Yueshan 10 and Longyin 11 respectively. The soundboard 6 on the side of Yueshan 10 is provided with a first sound hole 8. The top of the soundboard 7 is fixedly connected to the bottom copper plate 4 of the pillar group. Several pillars 3 are fixed in sequence on the bottom copper plate 4 of the pillar group. The pillar mouth 2 at the top of each pillar 3 extends out of the qin body from the first sound hole 8 and abuts against a string 1.

[0056] Furthermore, the width of the sound plate 7 is greater than the width of the panel 6. The sound plate 7 and the two sides of the panel 6 in the width direction are respectively connected by an inclined side panel 15. The panel 6 forms an arched structure with a high middle and low sides along the width direction. The first sound hole 8 is a strip hole set along the width direction of the panel 6.

[0057] Furthermore, the length of the instrument body is 1400mm~1450mm, the height of the instrument body is 80mm~120mm, the width of the soundboard 7 is 250mm~350mm, and the width of the panel 6 is 210mm~220mm.

[0058] Furthermore, a second sound hole 9 is provided on the panel 6 on the side of the gingival 11. The second sound hole 9 is a strip hole provided along the width direction of the panel 6.

[0059] Compared to the traditional guqin, the body needs to be modified. The first step is to break the guqin at the 10th joint (Yueshan). The Yueshan 10 and the headpiece are then moved outwards, lengthening the body by 200 mm, increasing the guqin's length from the standard 1200-1250 mm to 1400-1450 mm. The position of the Yueshan 10 and the headpiece remains unchanged. The width of the soundboard (6) remains approximately 200 mm, but the bottom board is widened by 100 mm, from the standard 200 mm to approximately 300 mm. The side panels are raised by 40 mm, from the standard 60 mm to approximately 100 mm, giving the guqin a shape that is narrower at the top (approximately 200 mm) and wider at the bottom (approximately 300 mm), with a downward-opening parabolic cross-section. Figure 4 In the schematic diagram of the sound transmission system for amplification and sound transmission via a combination of string and copper pillars, it can be seen that the cross-sectional view of the longitudinal section of the instrument body is parabolic. Additionally, the original guqin's heaven and earth pillars 13 and 14, the dragon pool, and the phoenix pond structure are removed. The purpose of this modification is to open up and add space at the original Yue Shan 10 location, and to widen the bottom plate to increase the area of ​​the soundboard 7 to amplify the sound; to make the guqin's resonance box parabolic, facilitating the upward diffusion of sound from the soundboard 7. Furthermore, maintaining the shape of the guqin's soundboard 6 is to preserve the traditional playing techniques of the guqin, namely, maintaining the thirteen zither positions. In the second step, on the soundboard 6 at the original Yue Shan 10 location, a first sound hole 8 for resonance is carved along the direction of Yue Shan 10. Preferably, the hole is 170 mm long and 10 mm wide, with the inner wall of the hole in a semi-circular arc shape, the diameter of which is equal to the thickness of the soundboard's curved surface. Simultaneously, at a preferred distance of 150 mm from the ridge of the string, a second sound hole 9 is symmetrically carved parallel to the ridge 11. The hole is preferably 150 mm long and 6 mm wide, with the inner wall forming a semi-circular arc, the diameter of which is equal to the thickness of the curved surface of the soundboard. The purpose of this modification is twofold: firstly, to expose the seven pins 2 of the string brass assembly on the soundboard, forming a system with the strings 1; and secondly, to facilitate sound production from the resonator, which serves the same purpose as the second sound hole 9 carved at the tail.

[0060] Furthermore, the post 3 extends the amplifying steel diaphragm 12 inside the body of the instrument. The amplifying steel diaphragm 12 can be welded and fixed to the side of the post 3, preferably as shown in the figure, including a cylindrical structure that can be sleeved on the outside of the post 3, with the post 3 extending out to both sides of the cylindrical structure.

[0061] Further details are attached. Figure 5 As shown, the spring bridge 5 includes a cylindrical main structure, which is sleeved on the outside of the nozzle 2. One end of a spring sheet is fixed on the left and right sides of the cylindrical structure, and the other end of the spring sheet crosses the first sound hole 8 and abuts against the panel 6.

[0062] For the guqin, there are seven strings (1), seven spring bridges (5), seven mouthpieces (2), seven post bars (3), and seven sound-amplifying steel membranes (12), forming seven sets of transmission structures.

[0063] For the guqin, the preferred design is as follows: String 1 is lengthened by 220 mm from the standard 1120-1250 mm to 1340-1470 mm to accommodate the increased length of the instrument. The soundboard 6 retains the standard width and thickness, but its length is increased by 200 mm to 1400-1450 mm, and a first sound hole 8 and a second sound hole 9 are carved into it. The soundboard is 1400-1450 mm long, 300 mm wide, and 10 mm thick.

[0064] Preferably, there are seven nozzles 2 in total, each nozzle 2 connected to a rod 3 at the top of the rod 3. The nozzles 2 are cylindrical, each with a diameter of 6±1 mm. The heights of the seven nozzles are equal in pairs, arranged in the following order: the first and seventh nozzles are equal, 37 mm; the second and sixth nozzles are equal, 52 mm; the third and fifth nozzles are equal, 65 mm; and the fourth nozzle is alone, 75 mm. The top of each nozzle 2 is hemispherical, preferably with a diameter of 6 mm. At the apex of the hemispherical nozzle 2, a semi-circular groove is carved in the same direction as the string 1; the hole diameter is preferably 2 mm, for the string 1 to be pressed into the semi-circular groove and pass through. After the seven nozzles are arranged, as shown... Figure 6 This is a schematic diagram of seven column nozzles.

[0065] The function of the nozzle 2 is to support the string 1 as it passes through, and to conduct the vibration of the string 1 to produce sound.

[0066] Preferably, there are seven posts 3 in total, each post 3 is 100 mm high, with a circular top of 6 mm in diameter that connects to the bottom of the post tip 2; the base of the post is an ellipse with a major axis of 30 mm and a minor axis of 20 mm, and the post body curves downwards from top to bottom. For example... Figure 7 Schematic diagram of the column.

[0067] Preferably, the function of the column rod 3 is to fix the column nozzle 2 at the top, connect the bottom copper plate 4 of the column group at the bottom, and connect the sound amplification steel diaphragm 12 in the middle to conduct vibration and produce sound.

[0068] Preferably, the column base copper plate 4. The column base copper plate 4 is 160 mm long, 50 mm wide, and 3 mm thick, with rounded corners. The front has seven teeth, each 10 mm long and 20 mm wide, with one tooth corresponding to the bottom of one column, facilitating sound amplification. Figure 8 Schematic diagram of the copper plate at the bottom of the column assembly.

[0069] The function of the base copper plate 4 of the column group is to fix the seven column rods 3 groups, transmit the vibration and sound to the soundboard 7, and play the role of the spring bridge 5.

[0070] Preferably, the spring bridge 5 consists of a hoop and a foot. The hoop is made of flexible spring steel and is expandable; the hoop has a diameter of 6 mm, a height of 5 mm, and a thickness of 3 mm. The foot is an elastic spring steel sheet, 30 mm long, 10 mm wide, and 2 mm thick. Figure 5 Schematic diagram of spring piano bridge 5.

[0071] Preferably, the amplifying diaphragm 12 is 200 mm long, 70 mm wide on both sides, and 80 mm wide in the middle, with a slanted shape on both sides and a thickness of 0.5 mm. The amplifying diaphragm 12 has an arc-shaped hole in the middle, the internal shape of which fits snugly against the external shape of the pillar body. The top surface is a 6 mm circular hole, and the bottom surface is an elliptical hole with a major axis of 30 mm and a minor axis of 20 mm, with the major axis parallel to the diaphragm surface and the minor axis perpendicular to it, allowing it to fit snugly onto the pillar body. Because the internal shape of the hole in the amplifying diaphragm 12 is identical to the external shape of the pillar body, the diaphragm can be snugly fitted onto the pillar body 1 mm from the bottom, ensuring that both sides of the diaphragm are fully inserted without being pushed against each other. Figure 9 A schematic diagram of the sound amplification diaphragm and its internal structure.

[0072] The above combination of the seven column tips 2, the seven column rods 3, and the base copper plate 4 of the column assembly is a whole. The material is brass. It can be made separately and welded together, or it can be made into a whole piece.

[0073] A method for preparing the above-mentioned string and copper pillar combined sound conduction system for the guqin (a seven-stringed zither) includes the following steps:

[0074] S1. Prepare a soundboard 7 with a length of 1400mm~1450mm and a width of 250mm~350mm. Prepare a panel 6 with the same length as the soundboard 7 and a width of 210mm~220mm. The panel 6 forms an arched structure with a high center and low sides along the width direction. Prepare four side panels to connect the soundboard 7 and the panel 6 to form the box body.

[0075] S2. Install the bridge 10 and the dragon's teeth 11 on the panel to fix the end of the string 1;

[0076] S3. On the panel 6, which is 200±50mm away from the Yueshan 10 and Longyin 11, a first sound hole 8 is opened on the panel 6 in a direction parallel to the Yueshan 10. The first sound hole 8 is 170±20mm long and 10±2mm wide.

[0077] S4. On the panel 6 between Yueshan 10 and Longyin 11, at a distance of 150±30mm from Longyin 11, a second sound hole 9 is opened on the panel 6 in a direction parallel to Longyin 11. The second sound hole 9 is 150±20mm long and 6±1mm wide.

[0078] S5. Prepare seven strings 1, string 1 length 1340mm~1470mm, seven post 2, seven post 3, and a post base copper plate 4, seven spring bridges 5, and seven sound amplification steel membranes 12.

[0079] S6. Fix the seven column tips 2, the seven column rods 3 and the bottom copper plate 4 of the column group into one piece. Cut a semi-circular groove hole at the top of the column tips 2 along the installation direction of the string 1. The hole diameter is preferably 2mm.

[0080] S7. Attach or screw the bottom of the column base copper plate 4 to the upper plane of the soundboard 7, and make the positions of the seven column nozzles 2 correspond to the first sound hole 8, preferably located in the center of the first sound hole 8. Install the amplifying steel diaphragm 12, fix the amplifying steel diaphragm 12 to the column rod 3, and take the seven amplifying steel diaphragms 12 and put them down onto the column rod 3 one by one, making sure they fit tightly. Attach the spring bridge 5 to the column nozzle 2, and install the seven spring bridges 5 one by one into the column body below the semi-circular groove hole of the column nozzle 2.

[0081] S8. Connect and fix the soundboard 7, the top panel 6, and the four side panels. Fix the spring plate of the spring bridge 5 to the top panel 6. The hoop of the spring bridge 5 is a flexible spring ring with expansion capability, which can ensure that the hoop of the spring bridge 5 is tightly fitted with the post 2. When the extended foot of the spring bridge 5 crosses the first sound hole 8 and keeps in close contact with the top panel 6, the installation is complete. Install the string 1, tie one end of the string 1 to the bridge 10, insert the string 1 into the semi-circular groove hole at the top of the post 2, tie the other end of the string 1 to the ferrule 11, tighten and tune it.

[0082] The function of the string and brass post assembly is to rapidly and amplify the vibration energy of the string 1 and directly transmit it to the soundboard 6, soundboard 7 and amplifying diaphragm 12, similar to the function of the bridge of a piano.

[0083] The principle upon which this utility model's technical solution is based is:

[0084] Similar to the sound amplification principle of a piano. The piano's sound amplification principle is as follows: when the player presses a key, it causes the action mechanism to drive the hammer to strike the string, triggering the string to vibrate and generate sound waves. These sound waves are then transmitted through a spring bridge to the soundboard, where the soundboard amplifies the sound energy and radiates it into the air, creating the piano's characteristic loud sound. Its core sound production path is: string vibration → transmission through the spring bridge → transmission through the soundboard.

[0085] Similarly, the sound transmission system of this utility model, consisting of a vibrating string and a copper pillar assembly, works as follows: the sound is transmitted through the vibrating string → to the copper pillar assembly → to the soundboard, thus creating a piano-like amplification effect. In this way, the copper pillar assembly is equivalent to a complex piano bridge with springs.

[0086] The effect of this invention on the guqin is that the sound energy is rapidly transmitted to the soundboard 6, soundboard 7, and amplifying diaphragm 12 via the spring bridge 5 and the string brass rod, quickly achieving the volume synthesis resonance of the guqin's soundbox. It completely overcomes the shortcomings of the original guqin, such as long sound transmission distance and poor resonance due to varying distances.

[0087] This invention relates to a sound transmission system technology for amplifying and conduitring sound through copper pillars on a string, applicable to the guzheng (Chinese zither). Its applications are as follows:

[0088] Following the modification method for the guqin, the guzheng body was lengthened by 200mm, the base plate widened by 100mm, and the side panels heightened by 40mm. Then, following the guqin's modification method, except for removing the spring bridge, the 21 strings of the guzheng were fitted with a sound transmission system consisting of 21 bridges, 21 necks, 21 sound-amplifying steel diaphragms, an extended base plate, and a soundboard.

[0089] In detail, the technical solution of this utility model applicable to the guzheng is as follows:

[0090] (i) Modify the body of the guzheng: shift the entire body of the guzheng outward by 200 mm along the front bridge, increasing it from the standard 1630 mm to 1830 mm; widen the bottom plate of the guzheng by 100 mm, increasing it from the standard 330-350 mm wide at the large end and 280-290 mm wide at the small end to 430-450 mm wide at the large end and 380-390 mm wide at the small end; raise the side plate of the guzheng by 40 mm, increasing it from the standard 70 mm to 110 mm; except for the 200 mm increase in length along with the body to 1830 mm, the width and thickness of the guzheng soundboard remain unchanged.

[0091] (II) Installation of the string and brass pillar assembly system: The string and brass pillar assembly system of the guzheng is completely identical to that of the guqin. The individual conduction structure of the guzheng string and brass pillar assembly system includes: 21 strings 1, string and brass pillar assembly, soundboard 6, and soundboard 7; String 1, a total of 21 strings, each 200 mm longer than the body of the instrument, from the standard 1630 mm to 1830 mm. The installation method of each string 1 on the guzheng is the same as that on the guqin; The soundboard 6, except that its length is increased by 200 mm to 1830 mm, retains the width and thickness of the standard guzheng soundboard 6. The first and second sound holes on the soundboard 6 are carved according to the method of the guqin, except that the first sound hole is lengthened to 250 mm. The installation method of the guzheng soundboard 6 is the same as that of the guqin soundboard 6; The soundboard (bottom board) 7, its length is increased to 1830 mm with the body of the instrument, its width is as described above (430-450 mm at the large end and 380-390 mm at the small end), and its thickness is 10 mm. The installation method of the guzheng soundboard 7 is the same as that of the guqin soundboard 7; the string brass assembly includes: 21 pinholes 2, 21 rods 3, 21 sound-amplifying steel membranes 12, 21 spring bridges 5, and a base brass plate 4; the pinholes 2 have a cylindrical diameter of 6 mm and a hemispherical protrusion at the top with the same diameter as the cylinder. The apex of the hemispherical protrusion is a semi-groove hole with a diameter of 2 mm, aligned with the strings. The heights of the pinholes 2 are equal in pairs as follows: pinholes <1, 21> are arranged in sequence with equal height. The height of the column tip is 37 mm, the height of column tip <2, 20> is 41 mm, the height of column tip <3, 19> is 45 mm, the height of column tip <4, 18> is 49 mm, the height of column tip <5, 17> is 53 mm, the height of column tip <6, 16> is 57 mm, the height of column tip <7, 15> is 61 mm, the height of column tip <8, 14> is 65 mm, the height of column tip <9, 13> is 69 mm, and the height of column tip <10, 12> is 73 mm. <11> Individual height 75 mm, the shape of the nozzle 2 is like Figure 6 Diagram of the mouthpiece; the installation method of the guzheng mouthpiece 2 is the same as that of the guqin mouthpiece 2; 3. There are 21 mouthpieces in total, each 100 mm high, with a 6 mm diameter circular top and an 11 mm diameter circular base. The body of the mouthpiece tapers downwards from the top to the bottom. The shape of the mouthpiece is as follows... Figure 7 The schematic diagram of the bridge is similar; the installation method of the guzheng bridge 3 is the same as that of the guqin bridge 3; there are 21 spring bridges 5, the hoop of the spring bridge 5 is 6mm in diameter, 5mm in height, and 2mm in thickness, and the foot of the spring bridge 5 is 30mm long, 10mm wide, and 2mm thick. Figure 5 The diagram for the spring bridge is similar; it consists of 21 amplifying steel membranes, each 200 mm long, 0.5 mm thick, 70 mm wide on both sides, and 80 mm wide in the middle. The membranes are sloping downwards from the top, with a conical hole in the center. The upper hole has a diameter of 6 mm, the lower hole has a diameter of 11 mm, and the middle is conical to the bottom. The shape and structure of the guzheng's amplifying steel membrane are similar to those of the guqin. Figure 9A schematic diagram of the amplifying diaphragm and its internal structure; the installation method of the guzheng amplifying diaphragm 12 is the same as that of the guqin amplifying diaphragm 12; the base copper plate 4 of the column group is 250 mm long, 30 mm wide, and 3 mm thick, and its shape is as follows. Figure 8 A schematic diagram of the bottom copper plate of the bridge assembly. The installation method of the bottom copper plate 4 of the bridge assembly of the guzheng is the same as that of the bottom copper plate 4 of the bridge assembly of the guqin. The combination of the 21 bridge mouthpieces 2 and 21 bridge rods 3 of the guzheng with the bottom copper plate 4 of the bridge assembly is a whole and the material is brass. The above-mentioned guzheng string copper bridge assembly structure and its preparation method are exactly the same as the string copper bridge assembly of the guqin.

[0092] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A musical instrument structure with a string-copper post combined sound transmission system, comprising a body, the body being a hollow box, the top of the body being a soundboard (6), the bottom of the body being a soundboard (7), and a plurality of strings (1) fixed to the top of the soundboard (6), characterized in that: The panel (6) is provided with a first sound hole (8). The top of the soundboard (7) is fixedly connected to the bottom copper plate (4) of the column group. The bottom copper plate (4) of the column group is fixedly connected to the bottom end of several columns (3). The columns (3) extend out of the amplifying steel diaphragm (12). The top of the columns (3) is fixedly connected to the nozzle (2). The nozzle (2) passes through the first sound hole (8) on the panel (6) and extends out of the instrument body. The nozzle (2) abuts against the string (1). The nozzle (2) is fixedly connected to the spring bridge (5). The spring bridge (5) is fixedly connected to the panel (6).

2. A structure of a Guqin comprising the structure of the musical instrument as claimed in claim 1, characterized in that: The instrument body is the body of the guqin. The top of the panel (6) is fixed with the Yueshan (10) and Longyin (11) at both ends along the length direction. The two ends of the string (1) are fixed on the Yueshan (10) and Longyin (11) respectively. The first sound hole (8) is provided on the panel (6) on the side of the Yueshan (10). The top of the soundboard (7) is fixedly connected to the bottom copper plate (4) of the column group. Several pillars (3) are fixed in sequence on the bottom copper plate (4). The top of each pillar (3) has a pillar mouth (2) that abuts against a string (1).

3. The structure of a Chinese zither according to claim 2, wherein: The width of the soundboard (7) is greater than the width of the panel (6). The soundboard (7) and the two sides of the panel (6) in the width direction are respectively connected by an inclined side panel (15). The panel (6) forms an arched structure with a high middle and low sides along the width direction. The first sound hole (8) is a strip hole set along the width direction of the panel (6).

4. The structure of a Chinese zither according to claim 3, wherein: A second sound hole (9) is provided on the panel (6) on the side of the gingiva (11). The second sound hole (9) is a strip hole provided along the width direction of the panel (6).

5. The structure of a Chinese zither according to claim 3, wherein: The length of the instrument body is 1400mm~1450mm, the height of the instrument body is 80mm~120mm, the width of the soundboard (7) is 250mm~350mm, and the width of the soundboard (6) is 210mm~220mm.

6. The structure of a Chinese zither according to claim 2, wherein: The post (3) extends the amplifying steel membrane (12) inside the body of the instrument.

7. The structure of a Chinese zither according to claim 2, wherein: The spring bridge (5) includes a cylindrical main structure, which is fitted over the nozzle (2). One end of a spring sheet is fixed on each side of the cylindrical structure, and the other end of the spring sheet crosses the first sound hole (8) and abuts against the panel (6).

8. The structure of a Chinese zither according to claim 2, wherein: The instrument has seven strings (1), seven spring bridges (5), seven ferrules (2), seven rods (3), and seven amplifying diaphragms (12) to form seven sets of conduction structures. in: Seven strings (1), the length of string (1) is 1340mm~1470mm; Seven pillars (2), each pillar (2) has a diameter of 6mm and a hemisphere at the top with the same diameter as the pillar. The apex of the hemisphere is a semi-groove hole in the same direction as the string (1). The diameter of the semi-groove hole is 2mm. The pillars are arranged in pairs with equal heights: the first and seventh pillars (2) are 37mm high; the second and sixth pillars (2) are 52mm high; the third and fifth pillars (2) are 65mm high; and the fourth pillar (2) is 75mm high on its own. Seven pillars (3), each pillar (3) is 100mm high, the top of the pillar is a circle with a diameter of 6mm, and the base of the pillar is an ellipse with a major axis of 30mm and a minor axis of 20mm. The pillars (3) are arranged in a line along the minor axis and fixed in the middle of the bottom copper plate (4) of the pillar group. The pillar (3) has an arc-shaped variable diameter structure from the top to the bottom. The bottom copper plate (4) of the column group is one, with a length of 160mm, a width of 50mm, and a thickness of 3mm; Seven spring bridges (5), the cylindrical main structure of the spring bridges (5) has a diameter of 6mm, a height of 5mm, and a thickness of 2mm; the spring sheet of the spring bridges (5) has a length of 30mm, a width of 10mm, and a thickness of 2mm; Seven sound-amplifying steel diaphragms (12), the sound-amplifying steel diaphragm (12) is 200mm long, 70mm wide on the left and right sides, 80mm wide in the middle, and 0.5mm thick. There is an arc-shaped hole in the middle of the sound-amplifying steel diaphragm (12), the top surface is a 6mm circular hole, and the bottom surface is an elliptical hole with a major axis of 30mm and a minor axis of 20mm. The internal shape of the hole is such that the major axis is aligned with the diaphragm surface and the minor axis is perpendicular to the diaphragm surface. The overall shape matches the external shape of the column rod (3). The combination of seven column tips (2), seven column rods (3), and a column base copper plate (4) is a whole, and the material is brass. The seven bridges (2), seven spring bridges (5), seven pillars (3), seven sound-amplifying steel membranes (12), and a copper plate at the bottom of the pillar assembly (4) together form the string and copper pillar combination system for transmitting the sound of the guqin.

9. A structure of a Guzheng comprising the structure of the musical instrument as claimed in claim 1, characterized in that: The instrument body is the body of a guzheng. The top of the panel (6) is fixed with a bridge (10) and a dragon's teeth (11) at both ends along the length direction. The two ends of the strings (1) are fixed to the bridge (10) and the dragon's teeth (11) respectively. The panel (6) is 1830 mm long. The two ends along the length of the panel (6) are the large end and the small end, respectively. The width of the large end decreases from the small end to the large end. The width of the large end is 330-350 mm and the width of the small end is 280-290 mm. The first sound hole (8) and the second sound hole (9) are respectively provided in the upper mountain (10) and the dragon gum (11) of the panel (6). The first sound hole (8) is 250±20 mm long and 10±2 mm wide. The second sound hole (9) is 150±20 mm long and 6±1 mm wide. The soundboard (7) is 1830 mm long. The two ends along the length of the soundboard (7) are the large end and the small end, respectively. The width of the large end decreases from the small end to the large end. The width of the large end is 430-450 mm and the width of the small end is 380-390 mm. The side panel between the front panel (6) and the soundboard (7) is 110 mm high; The strings (1), spring bridge (5), ferrule (2), post (3), and amplifying diaphragm (12) are all twenty-one, forming twenty-one sets of conduction structures; in: The string (1) is 1830 mm long; The pylon (2) is a cylinder with a diameter of 6 mm. The top protrusion is a hemisphere with the same diameter as the cylinder. The apex of the hemisphere is a semi-groove hole in the same direction as the string (1). The diameter of the semi-groove hole is 2 mm. The twenty-one pylons (2) are arranged in sequence, with each pair of corresponding equal heights: the first and twenty-first pylons (2) are 37 mm high, the second and twentieth pylons (2) are 41 mm high, the third and nineteenth pylons (2) are 45 mm high, and the fourth, The height of the 18th column (2) is 49 mm, the height of the 5th and 17th column (2) is 53 mm, the height of the 6th and 16th column (2) is 57 mm, the height of the 7th and 15th column (2) is 61 mm, the height of the 8th and 14th column (2) is 65 mm, the height of the 9th and 13th column (2) is 69 mm, the height of the 10th and 12th column (2) is 73 mm, and the height of the 11th column (2) is 75 mm. The column (3) is 100 mm high, with a 6 mm diameter circle at the top and an 11 mm diameter circle at the bottom. The column body is tapered from top to bottom. The sound amplification steel diaphragm (12) is 200 mm long, 0.5 mm thick, 70 mm wide on the left and right sides and 80 mm wide in the middle. It is sloping downward from the top. There is a conical hole in the middle of the sound amplification steel diaphragm. The upper hole has a diameter of 6 mm, the lower hole has a diameter of 11 mm, and the middle is conical to the bottom. It is fitted with the outside of the column rod (3). The bottom copper plate of the column group (4) is 250 mm long, 30 mm wide, and 3 mm thick; The guzheng is composed of 21 mouthpieces (2), 21 rods (3), 21 spring bridges (5), and a copper base plate (4) for the pillar assembly. It is made of brass. The guzheng consists of twenty-one mouthpieces (2), twenty-one bridges (3), twenty-one spring bridges (5), twenty-one sound-amplifying steel membranes (12), and one copper plate at the bottom of the bridge assembly (4), which together form the string and copper bridge assembly system for transmitting sound.

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