CN207337892U

CN207337892U - For optimizing the streamlined seven-stringed plucked instrument in some ways similar to the zither abdominal cavity structure of tonequality

Info

Publication number: CN207337892U
Application number: CN201720502804.0U
Authority: CN
Inventors: 杨致俭
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-05-08
Filing date: 2017-05-08
Publication date: 2018-05-08
Anticipated expiration: 2027-05-08

Abstract

It is used to optimize the streamlined seven-stringed plucked instrument in some ways similar to the zither abdominal cavity structure of tonequality the utility model discloses a kind of, changes conventional seven-stringed plucked instrument in some ways similar to the zither and receive the multi-angular shape of sound, increase effectively sound reflection area.The structure includes：Panel, first receives sound, and second receives and sound and strengthen muscle；Wherein, panel has outer surface and an inner surface, and outer surface is marked with 13 emblems position, and inner surface is towards seven-stringed plucked instrument in some ways similar to the zither bottom plate；First receives phoneme between the Tianzhu portion of panel and ground column portion, is swelled from the inner surface of panel and has the first hump, and described first, which receives sound, is not in relation to the long axial symmetry of the panel, and first hump is located at the bass side；Second receives phoneme between the ground column portion of panel and the afterbody of panel, is swelled from the inner surface of panel and has the second hump, and described second, which receives sound, is not in relation to the long axial symmetry of the panel, and second hump is located at the bass side；Strengthen the treble side that muscle is located at panel inner surface.

Description

Streamline seven-stringed plucked instrument abdominal cavity structure for optimizing tone quality

Technical Field

The utility model relates to a technical field of guqin sound production system, in particular to streamlined receive sound structure.

Background

The ancient lyre is a member of Chinese classical musical instruments, and has the characteristic of vivid tone, namely, the ancient lyre complains about the content of the music and lingering charm. The musical instrument sound of guqin derives from the vibration of string and the guqin musical instrument body, and the internal cavity of musical instrument is equivalent to the sound chamber, and this cavity is inside still to be equipped with celestial post and ground post, consequently, the sound wave that the vibration produced can be inside by multiple reflection and enlargeing, and the sound chamber plays the effect of first enlarged sound.

The interior of a conventional guqin is also provided with a sonar structure, the sonar structure is usually a rectangular body, some of the sonar structure is adhered to a guqin panel, and some of the sonar structure is directly shaped when the guqin panel is dug. From the actual effect of playing of seven-stringed plucked instrument in the Guqin, increase the complexity that receives the sound structure mainly in order to strengthen the seven-stringed plucked instrument in the sound chamber for public address effect is better. However, if the sonar sound has a large number of corners, the sound wave is not amplified when it hits the corner in the sound cavity, but is absorbed by the corner or reflected along the original path.

It is therefore desirable to design a structure that effectively helps amplify the sound of a guqin.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a streamlined sound structure of receiving for reinforcing tone quality has changed the many arriss shapes of sound are received to conventional guqin to thereby effectively prevent panel and bottom plate along its shrink deformation of direction of deformation.

The utility model relates to a streamline ancient lyre abdominal cavity structure for optimizing tone quality, which comprises a panel, a first receiving tone, a second receiving tone and a strengthening rib; wherein,

the panel is a rectangular plate and comprises an outer surface in a convex arc surface and an inner surface in a concave arc surface; one side of the outer surface is marked with a line of positions along the long axis direction of the panel; the inner surface is provided with a celestial post part and a terrestrial post part and faces the seven-stringed plucked instrument bottom plate; the side of the outer surface where the logo is located corresponds to the bass side of the inner surface, and the side of the outer surface far away from the logo corresponds to the treble side of the inner surface;

the surface between the zenith part and the ground pillar part is raised to form a first sonar which has a streamline first hump; the first nanohorn is not symmetric about the long axis of the panel, and the first hump is located on the bass side; the highest point of the first hump is 10-15 mm away from the bottom plate of the seven-stringed plucked instrument;

the strengthening rib is arranged between the upper pillar part and the lower pillar part and is positioned on the high pitch side;

the surface between the pillar part and the tail part of the guqin is raised to form a second sonar sound, and the second sonar sound has a streamline second hump; the second nanohorn is not symmetric about the long axis of the panel, and the second hump is located on the bass side; the highest point of the second hump is 11-13 mm away from the bottom plate of the guqin.

Preferably, the distance between the outer surface and the inner surface of the panel is 15mm on the treble side between the zenith part and the ground pillar part.

Preferably, the treble string support is arranged on one side of the outer surface of the panel far away from the badge position.

Preferably, the first and second nanotones are both located on the low side of the panel outer surface.

Preferably, the distance between the highest point of the first and second hump and the floor of the guqin cannot be less than 8 mm.

Preferably, a surface between the zenith part and the ground pillar part on the treble side is raised into a rectangular bar to constitute a reinforcing rib.

Preferably, the area of the first nanohorn is 0.028m²。

Preferably, the second sonar has an area of 0.014m²。

Preferably, the distance between the first hump and the bottom plate of the guqin is 9 mm.

Preferably, the distance between the outer surface and the inner surface of the panel at the treble side between the zenith part and the ground pillar part is 15 mm.

Compared with the prior art, the utility model, main difference and effect lie in: 1. the streamline and asymmetric nano-sound structure greatly increases the reflection surface of sound, thereby promoting the scattering of sound waves and greatly enhancing the sound; 2. the thickness of panel is not even, and the tone quality that reinforcing guqin high pitch and bass can be guaranteed to streamlined nano-sound of cooperation for the high pitch is transparent, the bass holds, and guqin sound has the feel.

It is understood that within the scope of the present invention, the above-mentioned technical features of the present invention and those specifically described below (e.g. in the examples) can be combined with each other to constitute new or preferred technical solutions. Not to be reiterated herein, but to the extent of space.

Drawings

Fig. 1A is a perspective view of a guqin according to an embodiment of the present invention.

Fig. 1B is a top view of a guqin according to an embodiment of the present invention.

Fig. 1C is a front view of a guqin according to an embodiment of the present invention.

Fig. 2 is a schematic view of the bottom surface of the guqin according to an embodiment of the present invention, showing a structure of consistency of deformation in the vertical direction of the Yueshan, Chenglu and Fang board.

FIG. 3 is a partial enlarged view of the portion A in FIG. 2

Fig. 4 is a top view of a vertical deformation uniformity structure of the mountain, dew receiver, and surface base plate in an embodiment of the present invention.

Fig. 5 is a cross-sectional view of a vertical deformation conformance structure of the mountain, dew receiver, and surface base plate in an embodiment of the present invention.

Fig. 6 is a schematic structural view of the inner surface of the panel in an embodiment of the present invention, showing a streamlined guqin abdominal cavity structure for optimizing sound quality.

Fig. 7 is a cross-sectional view of the structure of the cavity of the streamlined guqin in the embodiment of fig. 6.

Fig. 8 is a schematic structural diagram of a splice plate in an embodiment of the present invention.

Fig. 9 is a schematic view of a reinforcing structure of a guqin bottom plate according to an embodiment of the present invention.

Reference numerals:

guqin 1

Exposed part 111

The gum part 112

Panel 11

First groove 113

Second groove 114

Base plate 12

Third groove 121

First sound outlet 122

Second sound outlet 123

Channel 124

String 13

1 string 131

Yueshan 14

Logo 15

Four emblems 154

Forehead 16

Yanzu 17

Support bar 18

Seal 19

Reinforcing bar 20

Zenith part 115

Ground pillar part 116

First sonar 117

Second nano-phone 118

Reinforcing rib 119

High pitch side 100

Bass side 200

Splice plate 2

Detailed Description

In the following description, numerous technical details are set forth in order to provide a better understanding of the present application. However, it will be understood by those skilled in the art that the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The noun explains:

in this document, the major axis of a three-dimensional object refers to the central axis of the object in the direction of the longest dimension of the three dimensions. Or the center line of the longest direction of the object.

In this document, the grain is the direction of arrangement of the axial cells of the wood, which is substantially parallel to the long axis of the trunk, also called straight grain.

In this document, the annual ring direction refers to concentric rings on the cross section of the trunk of the woody plant.

In this application document, the high pitch side means the side corresponding to "treble zone" of the guqin on the internal surface of the guqin panel, and the low pitch side means the side corresponding to "bass zone" of the guqin on the internal surface of the guqin panel.

Integral structure of seven-stringed plucked instrument

Fig. 1 is a schematic structural diagram of a guqin 1 according to an embodiment of the present invention, including: a panel 11, strings 13 and a bridge 14 mounted on the panel 11, and a bottom plate 12. As shown in fig. 1, the bridge 14 is vertically erected in front of the dew receiving portion 111 of the panel 11, and the bridge 14 is provided with string eyes for tying the strings 13. The strings 13 of the guqin comprise 1-7 strings and respectively extend from the gum part 112 of the panel 11 to the Yueshan 14 and are fixed on the string eyes. In the strings 13, 1 to 3 strings are bass strings, the region in which the strings are located is called a "bass zone", 4 strings are the strings 13 located in the middle, 5 to 7 strings are treble strings, and the region in which the strings are located is called a "treble zone". Thirteen badges 15 are arranged on the panel 11, the naming rule is one badge, six badges and twelve badges waiting, and each badge 15 actually represents a reference plane perpendicular to the panel 11. Thus, by staggering the emblems 15 and strings 13, the positions on the panel 11 can be located, for example, one emblem 7 string, four emblem 4 strings, and so on.

In the Guqin, further, 1-7 strings extend from the dragon gum part 112 to the Yueshan 14, and pass through the position where the four emblems 154 of the panel 11 are located and extend upwards for 7.1-7.3 mm in the reference plane vertical to the panel 11 until contacting with the Yueshan 14 and being fixed on the Yueshan 14. When scoring a musical instrument, the position of the string 13 contacting the mountain 14 is determined as the installation height of the mountain 14. Moreover, the surface between the four emblems 154 and the gum portion 112 of the panel 11 is concave relative to the connecting line between the four emblems 154 and the gum portion 112, and the maximum concave distance is 1.2-1.3 mm.

Experiments have verified that the slight downward concavity of the face from the emblem 154 to the gum portion 112 is the best configuration to avoid the occurrence of braking sounds and clapboards, and by limiting the distance of the concavity, the sound effect of the guqin can be improved to varying degrees. Because the external force for exciting the strings 13 to generate mechanical vibration is different in magnitude, the vibration quantity of the strings 13 is increased by a larger external force, and the strings 13 are easy to flap the piano surface, so that the string pitch needs to be increased; however, if the pitch is much larger than the amplitude of the strings 13, it will affect the pianist to develop his playing skill, further affect the user experience (i.e., feel), be a very important factor from the standpoint of use of the stringed musical instrument, and also increase the incompatibility of the appearance of the guqin.

Specifically, the highest point of the piano surface shown in fig. 1 is the point of four emblems 154, and the 1 string 131 extends from the dragon gum part 112 to the piano forehead 1615 and passes through a position 7.2mm directly above the point of four emblems 154 until the 1 string 131 contacts the Yueshan 14, which is the installation height of the Yueshan 14, namely, the minimum hmin of the distance of the part of the Yueshan 14 protruding from the Guqin panel 11. Because the Yuan mountain 14 is also provided with the string eye which is arranged at a position slightly lower than the top of the Yuan mountain 14, the actual installation height h of the Yuan mountain 14 is larger than hmin; in another embodiment, the string eye can be disposed on the top of the Yuan mountain 14, and the installation height of the Yuan mountain 14 can be equal to hmin.

With four emblems 154 points as the node, the plane perpendicular to the guqin panel 11 at four emblems 154 place divides the guqin panel 11 into two sections: the first section is from the gum part 112 to the four emblems 154 and has a first section of a piano face; the second section is from the position of the four emblems 154 to the Yueshan 14 and has a second section of piano face. According to experimental verification, the structure of the first stage of the piano face is a main factor influencing the sound effect of the guqin. In general, when the height of the string 13 from the four emblems 154 is smaller, the concave distance of the first section of the piano face corresponding to the string 13 is also smaller, which is determined by the diameter of the string 13. In this embodiment, when the 1 string 131 is 7.2mm higher than the 154 point of the four badges, the midpoint of the first stage of the piano face is selected as the lowest concave point, and the concave distance is 1.3 mm; the distance of the 4 strings higher than the four badges 154 is 7.16mm, and the corresponding first section of piano surface is concave by 1.28 mm; 7 the distance 7.15mm that the chord is higher than four emblems 154, and its first section musical instrument face that corresponds is recessed distance 1.28mm, and remaining string 13 erects in proper order on guqin panel 11 and all differs from the height of four emblems 154 according to the assembly order to control the tolerance and between 0.1 mm. When carrying out the sound production with external force excitation string 1313 this moment, the sound of musical instrument face is patted to the sound of the braking sound and/or string 1313 that similar shashasha chou can not appear to the guqin to can also not appear "anti finger" phenomenon when plucking string 13, can relax press string 13 and string 13 also keeps its elasticity, user experience (feel) also is the best.

In addition, still be equipped with wild goose foot 17 on the bottom plate of guqin, play the effect of supporting guqin.

Vertical direction deformation consistency structure of Yueshan and Yulu dough base plate

In an embodiment, the guqin 1 further has a structure of consistency of deformation of the Yueshan 14, the Chenglu 111 and the surface base plate 12 in the vertical direction, so as to avoid the problems of the Yueshan 14 protruding from the boundary of the surface/base plate 12 and the cracking of paint, etc. caused by the deformation of the panel 11 or the base plate 12. The structure mainly comprises a guqin panel 11, a Yueshan 14 vertically arranged at a bearing and exposing part 111 of the guqin panel 11, a guqin bottom plate 12, a supporting bar 18 and a seal 19, wherein the outer surface of the bearing and exposing part 111 is provided with a first groove 113, the first groove 113 horizontally penetrates through the outer surface of the bearing and exposing part 111 along the long axis direction of the first groove 113, and the longitudinal depth of the first groove 113 is smaller than the thickness of the bearing and exposing part 111; the inner surface of the exposure bearing part 111 is provided with a second groove 114, the second groove 114 is positioned below the side of the first groove 113, the longitudinal depth of the second groove 114 is less than the thickness of the exposure bearing part 111, and the support bar 18 is assembled in the second groove 114; a third groove 121 corresponding to the second groove 114 is formed in the guqin bottom plate 12, and the third groove 121 longitudinally penetrates through the guqin bottom plate 12; the seal 19 is placed in the third groove 121 for blocking the supporting bar 18 to fill the bottom plate 12 of the guqin; wherein, the length of the third groove 121 is greater than the length of the second groove 114 and less than the length of the first groove 113.

Specifically, the surface of the panel 11 on which the strings 13 are mounted is called the piano surface, and is also the outer surface of the panel 11, and the piano surface has a slight micro-arc, that is, the surface between the two long sides of the panel 11 is slightly raised for aesthetic reasons. The grain direction of the panel 11 is substantially the same as the longitudinal direction of the panel 11. The upper part of the mountain 14 is a meniscus and the lower part connected to the upper part is a rectangular plate. The grain direction of the mountain 14 is perpendicular to the grain direction of the panel 11.

Fig. 2 is a schematic view of the bottom surface of the guqin according to an embodiment of the present invention, showing the vertical deformation uniformity structure of the Yueshan 14, the Chenglu and the surface bottom plate 12. Fig. 3 is a partially enlarged view of a portion a in fig. 2.

The outer surface of the exposure part 111 is provided with a first groove 113, the first groove 113 horizontally penetrates through the outer surface of the exposure part 111 along the long axis direction of the first groove 113, and the longitudinal depth of the first groove 113 is smaller than the thickness of the exposure part 111. The first groove 113 is used for mounting the mountain 14. On the exposed portion 111, a first groove 113 is formed by recessing downward a position of a first predetermined distance from 16 portions of the forehead of the guqin in the short side direction of the guqin, wherein the first predetermined distance is 10cm in the present embodiment. The first groove 113 is a rectangular groove, and is symmetrical about the long axis of the guqin. The first groove 113 corresponds to the shape of the Yueshan 14, and has a length 165mm, a width 11mm, and a depth 25 mm. After scoring the musical instrument, the mountain 14 is perpendicular to the exposure portion 111 and is located on the external surface of the panel 11, and is clamped in the first groove 113 and fixed by means of adhesion. It should be noted that the depth of the first groove 113 may not be greater than the thickness of the exposure receiving portion 111.

The inner surface of the face plate 11 is a surface of the face plate 11 for abutting against the bottom plate 12. As seen in fig. 2, the inner surface of the panel 11 is recessed upwardly from 16 portions of the forehead of the guqin by a second predetermined distance, 12cm in this embodiment, in the direction of the short side of the guqin to form a second slot 114. The second groove 114 and the first groove 113 are parallel to each other, and the horizontal distance between the major axes of the first groove 113 and the second groove 114 is 2 mm. The second slot 114 has a length of 135mm, a width of 24mm and a depth of 7 mm. The longitudinal direction of the second groove 114 is the short side direction of the panel 11, and the width direction is the long side direction of the panel 11. The second grooves 114 are provided therein for receiving the support bars 18, and the support bars 18 serve to prevent the panel 11 from being shrunk in a deformation direction due to dehydration for a long time. The direction of deformation is the direction perpendicular to the grain of the panel 11. The deformation direction of the panel is perpendicular to the grain direction of the panel.

In the present embodiment, the supporting bar 18 is a rectangular block corresponding to the shape of the second groove 114. The support bar 18 is inserted into the second groove 114 and fixed to the inner surface of the panel 11 by adhesion. The support strip 18 has a length of 81mm, a width of 22mm and a thickness of 12 mm. The panel 11 is not shrunk in the short side direction by the support bars 18, so that the shape of the exposure portion 111 is maintained and the mountain 14 is not protruded from the panel 11 in the short side direction of the panel 11.

It should be noted that the thickness of the supporting bar 18 may be larger than the depth of the second groove 114, i.e. the supporting bar 18 may be higher than the second groove 114 after the supporting bar 18 is embedded into the inner surface of the panel 11, so that when the panel 11 and the bottom plate 12 are assembled, the supporting bar 18 can partially penetrate into the bottom plate 12 to better fix the relative positions of the panel 11 and the bottom plate 12.

Further, in the conforming structure, a third slot 121 is provided on the bottom plate 12, and the third slot 121 corresponds to the orientation of the second slot 114 and extends through the bottom plate 12. The third groove 121 is a rectangular groove, after the bottom plate 12 is attached to the face plate 11, the third groove 121 is located right below the second groove 114, and the support bar 18 partially penetrates into the third groove 121 without penetrating through the bottom plate 12. The consistency structure further comprises a seal 19, the seal 19 is in accordance with the shape of the third groove 121, is a rectangular plate and has a length of 134mm and a width of 23mm, the thickness is determined according to the thickness of the support bar 18, and the determination conditions are as follows: the sum of the thicknesses of the support bar 18 and the seal 19 is equal to the sum of the depths of the second groove 114 and the third groove 121, and in the embodiment, the thickness of the seal 19 is 3 mm. The longitudinal direction of the third groove 121 is the short side direction of the base plate 12, and the width direction is the long side direction of the base plate 12. The seal 19 is placed in the third groove 121 to retain the support bar 18 and to level the bottom plate 12. Further, the seal 19 can maintain the original shape of the bottom plate 12 by resisting the contraction deformation of the bottom plate 12 in the short side direction thereof.

In another embodiment, the grain direction of the supporting strip 18 may be perpendicular to the grain direction of the panel 11, so that if the supporting strip 18 is also shrunk and deformed, the deformation direction is the width direction, so that the original length is still maintained in the length direction, and the original propping effect is maintained without shrinkage.

Fig. 6 is a schematic structural view of the inner surface of the panel 11 according to an embodiment of the present invention, showing a streamlined guqin abdominal cavity structure for optimizing sound quality. The structure is disposed on the inner surface of the panel 11 and includes the panel 11, a first nano-sound 117, a second nano-sound 118 and a reinforcing rib 119. As above, the outer surface of the panel 11 has a curvature and is slightly raised, and is marked with thirteen logos 15; the inner surface faces the bottom plate 12. The first receiving sound 117 is located in the belly of the large groove of the panel 11, and corresponds to the position of the sound outlet hole of the bottom plate 12, namely the dragon pool 122; the second receiving sound 118 is located in the belly of the small groove of the panel 11 and corresponds to the sound outlet hole of the bottom plate 12, namely the "feng shi 123".

The panel 11 is a rectangular plate and comprises an outer surface in a convex arc surface and an inner surface in a concave arc surface; one side of the outer surface is marked with a line of positions 15 along the long axis direction of the panel 11; the inner surface is provided with a top column part 115 and a bottom column part 116 and faces the bottom plate 12 of the guqin; the side of the outer surface where the logo 15 is located corresponds to the bass side 200 of the inner surface and the side of the outer surface remote from the logo 15 corresponds to the treble side 100 of the inner surface;

the surface between the zenith part 115 and the ground pillar part 116 is raised to form a first nanohorn 117, and the first nanohorn 117 has a streamlined first hump; the first nanohorn 117 is not symmetric about the long axis of the panel 11, and the first hump is located on the bass side 200; the highest point of the first hump is 10-15 mm away from the seven-stringed plucked instrument bottom plate 12;

the reinforcement rib 119 is provided between the zenith part 115 and the ground pillar part 116, and is located on the treble side 100;

the surface between the pillar part 116 and the tail part of the guqin is raised to form a second nano-sound 118, and the second nano-sound 118 has a streamline second hump; the second nanohorn 118 is not symmetric about the long axis of the panel 11 and the second hump is located on the bass side 200; the highest point of the second hump is 11-13 mm away from the bottom plate 12 of the guqin.

It should be noted that the distance between the highest point of the first and second humps and the bottom plate 12 of the guqin cannot be less than 8mm, otherwise the flow of air inside the guqin is blocked, so that the sound of the guqin cannot be effectively amplified for the first time inside.

Specifically, in the present embodiment, the inner surface of the panel 11 is provided with a zenith pillar portion 115 and a ground pillar portion 116, the zenith pillar portion 115 being a cylindrical column to symbolize "zenith circle" and the ground pillar portion 116 being a square column to symbolize "local". The interior surface of the panel 11 further includes a treble side 100 and a bass side 200, wherein the bass side 200 corresponds to the side of the panel 11 on which the logo 15 is located, and the treble side 100 corresponds to the side of the panel 11 away from the logo 15. The treble side 100 and bass side 200 correspond to a "treble zone" and a "bass zone" on the outer surface of the panel 11, respectively. The treble string is set on the outer surface of the panel 11 on the side away from the emblem 15, i.e., the "treble zone".

Fig. 7 is a cross-sectional view of the structure of the cavity of the streamlined guqin in the embodiment of fig. 6. As shown in fig. 7, the bass side 200 between the zenith part 115 and the ground pillar part 116 is raised to constitute a first nanosonic tone 117, and the first nanosonic tone 117 has a first hump. The first nanohorn 117 is mountain-like and asymmetric about the long axis of the panel 11. The distance between the first hump and the bottom plate 12 cannot be less than 9 mm. The arrangement of the first sonar 117 on the bass side 200 enables an increase in the thickness of the panel 11, thereby enhancing the texture of the "bass" sound, making the sound more resilient. Further, the thickness of the treble side 100 between the zenith part 115 and the ground pillar part 116 is reduced to improve the texture of sound in the "treble region" so that the guqin treble is more transparent. Further, reinforcing ribs 119 are provided on the high-pitched side 100 between the zenith portion 115 and the ground pole portion 116, so that strength reduction due to excessive thinning of the panel 11 is avoided. On the treble side 100 between the zenith 115 and the peg 116 (i.e., the thickness of the panel 11 in the region of the reinforcing ribs 119), the distance between the outer surface and the inner surface of the panel 11 (the thickness of the panel 11) is 15 mm.

The bass side 200 between the pillar portion 116 and the gum portion 112 is raised to constitute a second nanosonic 118, the second nanosonic 118 also has a second hump and is shaped like a mountain, and the distance between the highest point of the second hump and the bottom plate 12 of the guqin cannot be less than 8 mm. It should be noted that, moreover, the thickness of the area of the panel 11 where the reinforcing ribs 119 are located must not be less than 30 mm; and the first and second nanotones 117 and 118 are located on the bass side 200 of the outer surface of the panel 11.

In the present embodiment, the rib 20 is a rectangular bar formed by a surface bulge on the high-pitched side 100 between the pillar portion 115 and the pillar portion 116.

In one embodiment, the area of the first nanohorn 117 is-0.4X 0.07-0.028 m²。

In one embodiment, the area of the second nanohorn 118 is-0.2X 0.07-0.014 m²。

In another embodiment, the reinforcing rib 20 is a rectangular strip and is bonded to the treble side 100 where the panel is relatively thin, for example, the reinforcing rib 20 is bonded to the panel at a position where the panel is 10mm thick, so as to enhance the panel strength and prevent the panel from being crushed.

Reinforcing structure of seven-stringed plucked instrument bottom plate

Fig. 9 is a schematic view of a reinforcing structure of the guqin bottom plate 12 according to another embodiment of the present invention, which is used to reinforce the strength of the bottom plate 12 and prevent deformation of the guqin.

The guqin bottom plate 12 is formed by splicing a plurality of battens with the same thickness, and a plurality of channels 124 for mounting the reinforcing ribs 20, a dragon pool sound outlet hole 122 and a phoenix marsh sound outlet hole 123 are arranged on the guqin bottom plate 12; wherein, the plurality of channels 124 are respectively positioned at two sides of each sound outlet and are arranged perpendicular to the sound outlet; the texture of the reinforcing ribs 20 is vertical to the texture of the seven-stringed plucked instrument bottom plate 12; the annual ring directions on the cross sections of the adjacent battens are different; the long axis direction of each batten is parallel to the long axis direction of the two sound outlet holes, and the long axis direction of each reinforcing rib 20 is perpendicular to the long axis direction of each batten.

The structure includes a base plate 12 and a stiffener 20 secured to the base plate 12. The base plate 12 is constructed by splicing a plurality of splice strips of uniform thickness, the splice strips being made of wood, which in this embodiment may be hardwood. The number of splicing strips is 3-5, and the width of each splicing strip is reduced by increasing the number of splicing strips. Fig. 8 is a schematic structural diagram of the splice plate 2 according to another embodiment of the present invention. Every concatenation strip is the rectangle strip, bonds each other and is in the same place to annual ring direction is inequality on the cross section of adjacent concatenation strip. For example, if the number of the splicing strips is 3, the annual ring direction on the cross section of the middle splicing strip is counterclockwise, and the annual ring directions on the cross sections of the splicing strips at the two sides are clockwise.

After scoring the piano, the bottom plate 12 is formed on the splice plate 2 formed by the splice strips. The bottom plate 12 is provided with first and second sound outlet holes 122 and 123, which are respectively called "dragon pond" and "phoenix marsh", wherein the first sound outlet hole 122 corresponds to the orientation of the first receiving sound 117, and the second sound outlet hole 123 corresponds to the orientation of the second receiving sound 118. The base plate 12 is provided with a channel 124 for fitting the reinforcing bar 20. Both sides of each sound outlet hole are provided with channels 124 perpendicular to the grain direction of the base plate 12. The channel 124 is a rectangular groove sunk into the bottom plate 12 to a certain thickness, and the reinforcing ribs 20 with the same shape as the channel 124 are embedded into the corresponding channel 124 to fill up the sunk position of the bottom plate 12 and also used for fixing the splicing strips to prevent the bottom plate 12 from being scattered.

In another embodiment, the channels 124 are disposed on two sides of the first sound outlet 122, and the channel 124 is disposed on one side of the second sound outlet 123.

It is to be noted that in the claims and the description of the present patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the use of the verb "comprise a" to define an element does not exclude the presence of another, same element in a process, method, article, or apparatus that comprises the element.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A streamline ancient lyre abdominal cavity structure for optimizing tone quality is characterized by comprising a panel, a first sonar, a second sonar and a strengthening rib; wherein,

the panel is a rectangular panel and comprises an outer surface in a convex arc surface and an inner surface in a concave arc surface; one side of the outer surface is marked with a line of insignia along the long axis direction of the panel; the inner surface is provided with a celestial post part and a terrestrial post part and faces the seven-stringed plucked instrument bottom plate; the side, where the logo is located, of the outer surface corresponds to the bass side of the inner surface, and the side, far away from the logo, of the outer surface corresponds to the treble side of the inner surface;

the surface between the zenith part and the ground pillar part is raised to form the first sonar, and the first sonar has a streamline first hump; the first nanohorn is not symmetric about the long axis of the panel, and the first hump is located on the bass side; the highest point of the first hump is 10-15 mm away from the bottom plate of the guqin;

the reinforcement rib is provided between the zenith part and the ground pillar part and is located on the treble side;

the surface between the pillar part and the tail part of the guqin is raised to form the second sonar sound, and the second sonar sound has a streamline second hump; the second nanohorn is not symmetric about the long axis of the panel, and the second hump is located on the bass side; the highest point of the second hump is 11-13 mm away from the bottom plate of the guqin.

2. The streamlined abdomen structure of a guqin for optimizing sound quality according to claim 1, wherein a distance between an outer surface and an inner surface of said panel is 15mm at said treble side between said celestial post portion and said terrestrial post portion.

3. The streamlined abdomen structure of a guqin for optimizing sound quality of claim 1, wherein a treble string is erected on the outer surface of said panel at a side far from the emblem.

4. The streamlined coeliac structure for optimizing sound quality of claim 1, wherein said first and second naudies are located on the bass side of said panel outer surface.

5. The streamlined coeliac structure for optimizing sound quality of claim 1, wherein a distance between a highest point of said first and second humps and said bottom plate of said guqin is not less than 8 mm.

6. The streamlined abdomen structure of a guqin for optimizing the sound quality of claim 1, wherein the surface between the zenith part and the ground pillar part on the treble side is raised into a rectangular bar to constitute a reinforcing rib.

7. The streamlined coeliac structure for optimizing sound quality of claim 1, wherein said first nanosonic has an area of 0.028m²。

8. The streamlined coeliac structure for optimizing sound quality of claim 1, wherein said second sonar has an area of 0.014m²。