CN110970009B

CN110970009B - Detachable post mechanical tuning mechanism electric box guitar

Info

Publication number: CN110970009B
Application number: CN201911253344.2A
Authority: CN
Inventors: 张巍; 赵壮; 许志伟; 王伟; 朱建国; 张国芳
Original assignee: Inner Mongolia University of Science and Technology
Current assignee: Inner Mongolia University of Science and Technology
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2023-07-04
Anticipated expiration: 2039-12-09
Also published as: CN110970009A

Abstract

The invention discloses a detachable electric guitar with a rear mechanical tuning mechanism. And only 7 lattices are arranged on the neck, which is greatly less than 21 or 24 lattices of the conventional common guitar, so that the manufacturing cost of the guitar is reduced, and the difficulty of learning the guitar is reduced, so that a male beginner can directly play music with five-degree accompaniment by using a C tuning fingering, and a female beginner can directly play accompaniment or music with E tuning fingering by using the C tuning fingering.

Description

Detachable post mechanical tuning mechanism electric box guitar

Technical Field

The invention belongs to the technical field of music equipment, and particularly relates to a detachable electric box guitar with a rear mechanical tuning mechanism.

Background

Today, all guitars, either high end or low end, are 21 or 24. While for primary music lovers, high-ranking lattice is rarely used during guitar playing. Secondly, for female lovers who only learn C tune fingering, the female lovers cannot directly accompany with the existing guitar, and the female lovers can accompany the guitar only by matching the tune-changing clips. For male lovers who only learn the C-tone fingering, only the low-ranking portion of 21 lattices is available. The multiple lattice and pre-tuning devices of existing guitars waste a lot of resources. The front tuning knob of the common guitar not only ensures that the guitar has longer overall length, but also has more complicated manufacturing cost and process.

Disclosure of Invention

In response to one or more of the problems with the prior art, the present invention provides a removable post mechanical tuning mechanism electric box guitar comprising:

the loudspeaker box (2) comprises a box body and a panel, wherein the panel is detachably arranged on the box body, and a sound hole (8) is formed in the loudspeaker box (2);

a neck (1) detachably connected with one end of the loudspeaker box (2), 6 threading holes (6), an upper horse (5) and 7 product posts (3) are arranged on the neck (1), wherein the threading holes (6) are used for threading guitar strings (4), the upper horse (5) is used for supporting the guitar strings (4), the 7 product posts (3) divide the neck (1) into 7 product grids (31), and a marker ring (7) is arranged on two of the 7 product grids (31); the pitch of the blank strings of the 6 guitar strings (4) is the fourth pitch of the common 21-lattice or 24-lattice guitar;

the tuning mechanism (11) is detachably connected with the other end of the loudspeaker box (2), 6 string reeling holes and a lower horse (9) are arranged on the tuning mechanism (11), string reeling devices (10) are respectively arranged in the 6 string reeling holes, and the lower horse (9) is used for supporting guitar strings (4); and

and the two ends of the waist (15) are detachably connected with the neck (1) and the tuning mechanism (11) respectively.

The neck (1) comprises a first neck (111) and a second neck (112), wherein the first neck (111) and the second neck (112) are detachably connected, and the 6 threading holes (6), the upper horse (5) and the 7 product posts (3) are all arranged on the first neck (111).

The first neck (111) and the second neck (112) are detachably connected by bolts.

The two marking rings (7) are respectively arranged on a third lattice and a fifth lattice from one end of the threading hole (6).

The neck (1) and the tuning mechanism (11) are detachably connected with the loudspeaker box (2) through bolts respectively, and the neck (1) and the tuning mechanism (11) are connected to one face of the loudspeaker box (2) provided with a panel.

The loudspeaker box (2) is of a trapezoid structure, and correspondingly, the panel is of a trapezoid structure.

The sound hole (8) is arranged on a side plate of the box body of the loudspeaker box (2) or on the panel, and the sound hole (8) is arranged at one end of the side plate or the panel, which is close to the second neck (112); preferably, an electronic sound pick-up is also provided at the location of the sound hole (8) or at the end of the inner face of the panel that is wider than the trapezoid.

The shape of the sound hole (8) is round, oblong, note F-shaped or double round hole; preferably, the size of the sound hole (8) is 1/12 of the panel area.

The sound insulation beam structures (14) are respectively arranged in the box body and the panel of the loudspeaker box 2, and the sound insulation beam structures (14) are correspondingly arranged according to the shapes and the positions of different sound holes (8).

When the shape of the sound hole (8) is oblong, the sound hole (8) is arranged at the narrower end of the panel with the trapezoid structure, an eight-shaped strip-shaped sound insulation beam structure (14) is arranged at the wider end of the inner surface of the panel, which is close to the trapezoid structure, the strip-shaped sound insulation beam structure (14) points to the sound hole (8), and two sound insulation beam structures (14) with different lengths are arranged at the inner bottom of the loudspeaker box (2); when the shape of the sound holes (8) is a note F shape, the two sound holes (8) are respectively arranged at two sides of the middle of the panel according to the shape of an eight, a plurality of willow leaf-shaped sound insulation beam structures (14) are arranged at one wider end, close to the trapezoid structure, of the inner face of the panel, the willow leaf-shaped sound insulation beam structures (14) point to the sound holes (8), and strip-shaped sound insulation beam structures (14) are arranged at the inner bottom of the loudspeaker box (2); when the shape of the sound hole (8) is double circular with different diameters, the sound hole (8) is arranged at one side of the narrower end of the panel with the trapezoid structure, a sound insulation beam structure (14) with a salix shape is arranged at the inner surface of the panel close to the center according to the shape of a Chinese character 'ba', the sound insulation beam structure (14) with the salix shape points to the sound hole (8), and two sound insulation beam structures (14) with different lengths are arranged at the inner bottom of the sound amplifying box (2); when the shape of the sound holes (8) is double-circular with equal diameters, the sound holes (8) are respectively arranged on two sides of one narrower end of the panel with the trapezoid structure, a long sound-insulating beam structure (14) is arranged on the inner surface of the panel along the center line of the panel perpendicular to the center connecting lines of the two circular sound holes (8), and a plurality of sound-insulating beam structures (14) with different lengths are arranged in the inner bottom of the loudspeaker box (2).

The material of the neck (1) and the tuning mechanism (11) is maple, basswood, sapride or transparent organic glass; the loudspeaker box (2) is made of spruce, basswood or saparix; the guitar strings (4) are made of steel wire strings for electric guitars.

Based on the electric guitar of the detachable post mechanical tuning mechanism provided by the technical scheme, the electric guitar is a simple and easy electric guitar with low manufacturing cost, is detachable and portable, reduces 7 lattice of learning difficulty of beginners, and is suitable for ordinary guitar playing lovers or beginners. The guitar can reduce the manufacturing cost of the guitar and simultaneously reduce the difficulty of learning the guitar. So that male beginners can directly play music with five-degree audio accompaniment by using the C-tone fingering, and female beginners can directly play accompaniment or music with E-tone accompaniment by using the C-tone fingering. Compared with the prior art, the method has the following beneficial effects:

1. the guitar adopts the rear tuning mechanism, so that the manufacturing difficulty is reduced compared with that of the existing common guitar, and the guitar is convenient to store and is not easy to break; firstly, two pieces of wood are needed to be bonded and bent at a larger angle (generally 25 degrees) by the front tuning mechanism, and then the angle of the rear tuning device can be reduced to 15 degrees by bonding the folded angle of two boards, and even one piece of wood can be made into a step shape without the folded angle, so that the manufacturing difficulty is reduced; secondly, the guitar head of the guitar of the invention has shorter length, the tuning mechanism is arranged at the rear of the sound amplifying box, so that the storage space is reduced and safer, and the head is not easy to break or deform;

2. the guitar of the present invention has only 7 lattices, which is much less than 21 or 24 lattices of the prior common guitar. The invention provides an economical guitar for beginners, and as primary guitar players account for most of the whole guitar players, the beginners can learn the guitar from the guitar and learn the guitar in a deeper step by using 21 or 24 guitars after reaching a certain level;

3. the guitar of the invention adopts the electronic pickup, can pick up the vibration signal and utilize the loudspeaker to expand the pronunciation of guitar effectively through the amplifying circuit, the function of the electronic pickup can expand pronunciation and can produce better sound effect, expand the style of guitar playing music, make up the natural pronunciation of wooden guitar by the wooden case, the volume is smaller and is not suitable for the defect that the large-scale place plays;

4. the guitar adopts the horse head musical instrument expansion box with the trapezoid structure, is far smaller than the prior common guitar gourd-shaped sound box, but is larger than the U-shaped sound box in the U-shaped, and the manufacturing difficulty is far smaller than that of the gourd-shaped sound box. The sound is thicker and thicker as the sound expansion box is larger in capacity, and is clearer and brighter as the sound expansion box is smaller in capacity, so that the guitar can obtain a sound expansion effect which is neither too large nor too small, the sound expansion principle of the horse head musical instrument can be simulated, and the sound can be generated by utilizing the trapezoid sound expansion box in an environment needing silence, so that the guitar cannot be disturbed during practice; and can combine the electron adapter to carry out double compensation pronunciation, enlarge after the string vibration signal is discerned through the electron adapter, even do not have the stealthy vibration signal that can discern of ordinary calabash shape loudspeaker box for guitar's sound becomes crisp, tone is higher.

5. The guitar of the invention is designed to be spliced, and several parts can be detached and placed in the traveling bag, so that the guitar is more suitable for long-distance carrying compared with the existing common guitar.

6. The pitch of the empty strings of the six strings of the guitar is the fourth lattice pitch of the common guitar.

Drawings

FIG. 1 is a schematic diagram of a removable rear mechanical tuning mechanism electric box guitar according to one embodiment of the present invention;

FIG. 2 is a schematic diagram of a removable rear mechanical tuning mechanism electric box guitar according to one embodiment of the present invention;

FIG. 3 is a schematic view of a portion of a guitar with a removable rear mechanical tuning mechanism in accordance with one embodiment of the present invention;

fig. 4 is a schematic diagram of a detachable electric guitar with a rear mechanical tuning mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic view of a sound amplifying box and sound insulating beam structure of a detachable post mechanical tuning mechanism electric box guitar according to one embodiment of the present invention;

fig. 6 is a schematic structural diagram of a loudspeaker box with different sound hole structures according to the present invention;

FIG. 7 illustrates various forms of sound insulating beam structures provided on a panel in accordance with the present invention;

fig. 8 shows different forms of sound-insulating beam structures arranged at the bottom of the loudspeaker box.

Description of the embodiments

The present invention will be described in detail with reference to the following specific examples.

Examples detailed embodiments and specific operation procedures are given on the premise of the technical scheme of the present invention, and examples are helpful for understanding the present invention, but are not to be construed as limiting the present invention.

As shown in fig. 1 and 2, there is shown a schematic structural view of a detachable electric box guitar of a rear mechanical tuning mechanism provided by the present invention, and it can be seen that the detachable electric box guitar of a rear mechanical tuning mechanism includes: the sound amplifying box 2, the neck 1, the tuning mechanism 11 and the waist 15, wherein the sound amplifying box 2 is of a trapezoid structure design and can be made of woods such as spruce, basswood, saparix and the like, is far smaller than a gourd-shaped sound amplifying box of the existing common guitar, but is larger than a sound amplifying box in the you criy. The loudspeaker box 2 comprises a box body and a panel, wherein the panel is detachably arranged on the box body, for example, the panel is fixed through four bolt holes around the box body. The sound holes 8 are formed in the side plates or the panel of the box body, the size, the shape and the position of the sound holes 8 need special calculation, wherein the size of the sound holes 8 is 1/12 of the area of the panel, so that the guitar of the invention can sound crisp and bright, the proportion of the sound holes occupying the area of the panel is too large and too small, and the sound holes are not suitable for the loudspeaker box of the guitar of the invention, and the guitar sound is flawed. As shown in fig. 6, the shape of the sound hole 8 may be designed in various shapes, such as a circle, an oblong shape (a in fig. 6), a note F shape (B in fig. 6), or a double round hole shape (C and D in fig. 6), wherein two circles in the double round hole shape may be equal in diameter or unequal in diameter. In addition, as shown in fig. 5, the sound insulation beam structures 14 are respectively arranged on the bottom in the box body and the inner surface of the panel of the loudspeaker box 2, and according to the shape and the position of the sound hole 8, the design of the sound insulation beam structures 14 on the bottom in the loudspeaker box 2 and the inner surface of the panel are different, and the sound insulation beam structures 14 need to be carefully adjusted according to the actual situation, and the basic principle is that the sound insulation beam structures 14 need to be laid in the shapes of horizontal bars, vertical bars and the like, wherein the vertical bars are directed to the position of the sound hole 8. As shown in fig. 7 and 8, several sound-damping beam structures 14 having different sound hole shapes and positions and their positions are shown, respectively. When the shape of the sound hole 8 is oblong, the sound hole 8 is arranged at the narrower end of the panel of the trapezoid structure, two bar-shaped sound-insulating beam structures 14 in a splayed shape are arranged at the wider end of the inner face of the panel near the trapezoid structure, the bar-shaped sound-insulating beam structures 14 point to the sound hole 8, and two bar-shaped sound-insulating beam structures 14 (an A frame in fig. 7 and an A frame in fig. 8) which are parallel to the upper bottom and the lower bottom of the trapezoid panel and have different lengths are arranged at the inner bottom of the loudspeaker box 2; when the shape of the sound hole 8 is the shape of a note F, the two sound holes 8 are respectively arranged at two sides of the middle of the panel according to the shape of a figure eight, a plurality of willow-leaf-shaped sound insulation beam structures 14 are arranged at one wider end of the inner surface of the panel, which is close to the trapezoid structure, the sound insulation beam structures 14 of the figure willow leaf-shape are respectively directed to the sound holes 8, and the inner bottom of the loudspeaker box 2 is provided with an elongated sound insulation beam structure 14 (B in figure 7 and B in figure 8) which is parallel to the upper bottom and the lower bottom of the trapezoid panel; when the shape of the sound hole 8 is double circular with different diameters, the sound hole 8 is arranged at one side of the narrower end of the panel of the trapezoid structure, a sound insulation beam structure 14 of a 'willow' shape is arranged at the inner surface of the panel near the center position according to the 'eight' shape, the sound insulation beam structure 14 of the 'willow' shape points to the sound hole 8, and two strip-shaped sound insulation beam structures 14 (C in fig. 7 and C in fig. 8) which are parallel with the upper bottom and the lower bottom of the trapezoid panel and have different lengths are arranged at the inner bottom of the loudspeaker box 2; when the shape of the sound hole 8 is a double circle with equal diameter, the sound holes 8 are respectively disposed at two sides of the narrower end of the panel of the trapezoid structure, the inner surface of the panel is provided with a long sound-insulating beam structure 14 perpendicular to the upper and lower bottoms of the trapezoid panel along the center line of the panel perpendicular to the center connecting line of the two circular sound holes 8, and the inner bottom of the loudspeaker box 2 is provided with a plurality of sound-insulating beam structures 14 (the D-frame in fig. 7 and the D-frame in fig. 8) with different lengths parallel to the upper and lower bottoms of the trapezoid panel. The sound insulation beam structure 14 is arranged in the sound expansion box of the guitar, so that vibration waves of strings are diffracted after entering the sound expansion box, another vibration wave is generated, and the vibration time of the guitar can be effectively prolonged by the sound insulation beam structure 14, so that the sound production time of the guitar is prolonged. Although it is common practice in the art to provide the sound insulating beam structure 14, the sound insulating beam structure 14 of the present invention is specifically designed according to the shape and position of the sound hole, so that the extension effect of the sound producing time of the guitar is better, and the requirements of different music in different scenes are satisfied. In addition, the electronic pickup is arranged at the position of the sound hole 8 or at one end of the inner surface of the panel, which is close to the wider end of the trapezoid structure, and can pick up vibration signals to effectively expand the sound of the guitar through the loudspeaker by the amplifying circuit, and the function of the electronic pickup can expand the sound and also can generate better sound effect, so that the style of guitar playing music is expanded, the defect that the wooden guitar naturally sounds by a wooden box, and the volume is smaller and is not suitable for playing in large places is overcome.

As shown in fig. 1 to 4, the neck 1 includes a first neck 111 and a second neck 112, wherein the first neck 111 and the second neck 112 are detachably connected, for example, by bolts at fixing holes 12, wherein 6 threading holes 6, an upper horse 5 and 7 product studs 3 are provided at the first neck 111, the threading holes 6 are used for threading guitar strings 4, the upper horse 5 is used for supporting the guitar strings 4, the 7 product studs 3 divide the first neck 111 into 7 product lattices 31, and from the end where the threading holes 6 are provided, a third product lattice and a fifth product lattice are provided with a logo circle 7, respectively, the logo circle 7 is used for the grade recognition of a player. The guitar neck has only 7 lattices, which is greatly less than 21 or 24 lattices of the common guitar, so that the guitar is more convenient to carry, and the pitch of the adopted six strings is the fourth lattice pitch of the common guitar. The second neck 112 is connected to the narrower end of the ladder structure of the loudspeaker box 2, for example, by bolts at the fixing holes 13. The tuning mechanism 11 is connected to the wider end of the trapezoidal structure of the loudspeaker box 2, for example by means of bolts, wherein 6 string reeling holes and a lower horse 9 are provided on the tuning mechanism 11, wherein string reeling devices 10 are provided in the 6 string reeling holes, respectively, and the lower horse 9 is used for supporting the guitar strings 4, so that one end of the guitar strings 4 is connected to the string reeling holes 6, and the other end is connected to the string reeling device 10, wherein both the upper horse 5 and the lower horse 9 are used for supporting the guitar strings 4. The guitar of the invention adopts the rear tuning mechanism 11, and the manufacturing difficulty is reduced compared with the existing common guitar. In addition, the detachable post mechanical tuning mechanism electric box guitar provided by the invention further comprises a waist 15, two ends of the waist 15 are detachably connected with the second neck 112 and the tuning mechanism 11 respectively, when the detachable post mechanical tuning mechanism electric box guitar is installed, the second neck 112 is fixed with one end of the waist 15, the tuning mechanism 11 is fixed with the other end of the waist 15, and then the second neck 112, the waist 15 and the tuning mechanism 11 are fixedly connected to the loudspeaker box 2 and are positioned on one side of a panel of the loudspeaker box 2. Wherein the neck 1 and tuning mechanism 11 can be made of maple, basswood, sapele, or transparent plexiglass. The guitar strings are steel wire strings for electric guitars.

The guitar based on the above embodiment has the following beneficial effects:

2. compared with the existing common guitar, the guitar neck is 4 pieces shorter, so that the guitar is more convenient to carry;

3. the guitar of the present invention has only 7 lattices, which is much less than 21 or 24 lattices of the prior common guitar. The invention provides an economical guitar for beginners, and as primary guitar players account for most of the whole guitar players, the beginners can learn the guitar from the guitar and learn the guitar in a deeper step by using 21 or 24 guitars after reaching a certain level;

4. the guitar of the invention adopts the electronic pickup, can pick up the vibration signal and utilize the loudspeaker to expand the pronunciation of guitar effectively through the amplifying circuit, the function of the electronic pickup can expand pronunciation and can produce better sound effect, expand the style of guitar playing music, make up the natural pronunciation of wooden guitar by the wooden case, the volume is smaller and is not suitable for the defect that the large-scale place plays;

5. the guitar adopts the horse head musical instrument expansion box with the trapezoid structure, is far smaller than the prior common guitar gourd-shaped sound box, but is larger than the U-shaped sound box in the U-shaped, and the manufacturing difficulty is far smaller than that of the gourd-shaped sound box. The sound is thicker and thicker as the sound expansion box is larger in capacity, and is clearer and brighter as the sound expansion box is smaller in capacity, so that the guitar can obtain a sound expansion effect which is neither too large nor too small, the sound expansion principle of the horse head musical instrument can be simulated, and the sound can be generated by utilizing the trapezoid sound expansion box in an environment needing silence, so that the guitar cannot be disturbed during practice; and can combine the electron adapter to carry out double compensation pronunciation, enlarge after the string vibration signal is discerned through the electron adapter, even do not have the stealthy vibration signal that can discern of ordinary calabash shape loudspeaker box for guitar's sound becomes crisp, tone is higher.

6. The guitar of the invention is designed to be spliced, and several parts can be detached and placed in the traveling bag, so that the guitar is more suitable for long-distance carrying compared with the existing common guitar.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A removable post mechanical tuning mechanism electric box guitar, comprising:

the loudspeaker box (2) comprises a box body and a panel, wherein the panel is detachably arranged on the box body, and a sound hole (8) is formed in the loudspeaker box (2); the loudspeaker box (2) is of a trapezoid structure, and correspondingly, the panel is of a trapezoid structure; an electronic pickup is arranged at the position of the sound hole (8) or at one end of the inner surface of the panel, which is close to the wider end of the trapezoid structure;

a neck (1) detachably connected with one end of the loudspeaker box (2), wherein the neck (1) is connected to one face of the loudspeaker box (2) provided with a panel, 6 threading holes (6), an upper horse (5) and 7 product posts (3) are arranged on the neck (1), the threading holes (6) are used for threading guitar strings (4), the upper horse (5) is used for supporting the guitar strings (4), the 7 product posts (3) divide the neck (1) into 7 product grids, and a marker ring (7) is arranged on two of the 7 product grids; the guitar strings (4) are made of steel wire strings for electric guitars; the pitch of the empty strings of the six strings is the fourth lattice pitch of the common guitar;

a tuning mechanism (11) detachably connected with the other end of the loudspeaker box (2), wherein the tuning mechanism (11) is connected to one surface of the loudspeaker box (2) provided with a panel, 6 string coiling holes and a lower horse (9) are arranged on the tuning mechanism (11), string coiling devices (10) are respectively arranged in the 6 string coiling holes, and the lower horse (9) is used for supporting guitar strings (4); and

2. The removable post mechanical tuning mechanism electric box guitar of claim 1, characterized in that the neck (1) comprises a first neck (111) and a second neck (112), wherein the first neck (111) and the second neck (112) are detachably connected, and the 6 string holes (6), the upper horse (5) and the 7 post (3) are all disposed on the first neck (111).

3. A removable post mechanical tuning mechanism electric box guitar according to claim 1, characterized in that two of said logo rings (7) are provided in a third and a fifth compartment, respectively, starting from the end where said threading holes (6) are provided.

4. The detachable post mechanical tuning mechanism electric box guitar of claim 1, characterized in that the neck (1) and tuning mechanism (11) are detachably connected with the loudspeaker box (2) by bolts, respectively.

5. The removable post mechanical tuning mechanism electric box guitar of claim 2, characterized in that the sound hole (8) is provided on a box side plate of the loudspeaker box (2) or on the panel, and the sound hole (8) is provided at an end of the side plate or panel near the second neck (112).

6. The electric box guitar of the removable post mechanical tuning mechanism of claim 5, characterized in that said sound hole (8) is circular, oblong, note F-shaped or double round hole shaped.

7. A removable post mechanical tuning mechanism electric box guitar according to claim 6, characterized in that said sound hole (8) is 1/12 of the area of said panel.

8. The detachable post-mechanical tuning mechanism electric box guitar of claim 6 or 7, characterized in that the box body and the panel of the loudspeaker box (2) are respectively provided with a sound insulation beam structure (14), and the sound insulation beam structures (14) are correspondingly arranged according to different sound hole (8) shapes and positions.

9. The electric box guitar of the removable rear mechanical tuning mechanism of claim 8, characterized in that,

when the shape of the sound hole (8) is oblong, the sound hole (8) is arranged at the narrower end of the panel with the trapezoid structure, an eight-shaped strip-shaped sound insulation beam structure (14) is arranged at the wider end of the inner face of the panel, which is close to the trapezoid structure, the strip-shaped sound insulation beam structure (14) points to the sound hole (8), and two sound insulation beam structures (14) with different lengths are arranged at the inner bottom of the loudspeaker box (2);

when the shape of the sound holes (8) is a note F shape, the two sound holes (8) are respectively arranged at two sides of the middle of the panel according to the shape of an eight, a plurality of willow leaf-shaped sound insulation beam structures (14) are arranged at one wider end, close to the trapezoid structure, of the inner face of the panel, the willow leaf-shaped sound insulation beam structures (14) point to the sound holes (8), and strip-shaped sound insulation beam structures (14) are arranged at the inner bottom of the loudspeaker box (2);

when the shape of the sound hole (8) is double circular with different diameters, the sound hole (8) is arranged at one side of the narrower end of the panel with the trapezoid structure, a sound insulation beam structure (14) with a salix shape is arranged at the inner surface of the panel close to the center according to the shape of a Chinese character 'ba', the sound insulation beam structure (14) with the salix shape points to the sound hole (8), and two sound insulation beam structures (14) with different lengths are arranged at the inner bottom of the sound amplifying box (2);

when the shape of the sound holes (8) is double-circular with equal diameters, the sound holes (8) are respectively arranged on two sides of one narrower end of a panel with a trapezoid structure, a long-strip sound-insulation beam structure (14) is arranged on the inner surface of the panel along the center line of the panel perpendicular to the center connecting lines of the two circular sound holes (8), and a plurality of sound-insulation beam structures (14) with different lengths are arranged in the inner bottom of the loudspeaker box (2).

10. The detachable post mechanical tuning mechanism electric box guitar of claim 1, characterized in that the material of the neck (1) and the tuning mechanism (11) is maple, basswood, sapride or transparent plexiglass; the loudspeaker box (2) is made of spruce, basswood or saparix.