CN110164402B

CN110164402B - Novel violin structure convenient and rapid to recognize finger positions

Info

Publication number: CN110164402B
Application number: CN201910540849.0A
Authority: CN
Inventors: 梁婧
Original assignee: Jiujiang University
Current assignee: Jiujiang University
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2023-04-18
Anticipated expiration: 2039-06-21
Also published as: CN110164402A

Abstract

The invention provides a novel violin structure capable of conveniently and quickly identifying finger positions, which comprises a violin, a single-row finger position identification block group and a single-row finger position identification block placement groove group; eight single-row index mark block placing groove groups are formed in the arc-shaped surface of the top end of the violin middle fingerboard and correspond to violin handle positions, and each single-row index mark block placing groove group is formed by two first circular groove structures and two second circular groove structures. First finger position sign cylinder piece and second finger position sign cylinder piece in this application file are equallyd divide and are do not inserted into first circular groove structure and the circular groove structure of second in to it is spacing via spacing fixture centre gripping, so it can not take place to shift, drop, the emergence of fuzzy scheduling problem like traditional violin indicates that the position is reminded used to point the position subsides, can guarantee lasting use.

Description

Novel violin structure convenient and rapid to recognize finger positions

Technical Field

The invention belongs to the technical field of violin structures and musical instruments, and particularly relates to a novel violin structure capable of conveniently and quickly identifying finger positions.

Background

The violin is a bow string instrument, the top of the instrument structure is a fingerboard, when fingers press on the fingerboard, the fingers can emit tones with different pitches, and the pitch formed according to the accurate position of the fingers on the fingerboard is intonation. Intonation is one of the important subjects of violin playing art. Because of the characteristics of the violin, the requirements on the intonation are extremely high, and the violin is distinguished by sensitive ears and forms relatively fixed distance sense by pressing the string positions by fingers during practice. However, the fingerboard of the violin has no mark, and a beginner cannot clearly find out the actual position of the musical note to be played on the fingerboard, so that the determination of the position of the musical note on the fingerboard is one of important and difficult-to-master technologies, and is a complex thinking activity and listening sound source process for learners, and the learners are required to accurately memorize the corresponding sound of each musical note, so that the difficulty is high, the efficiency is low, and the effect is slow.

For example, application No.: CN201310376588.6 is a violin fingering exercise device, includes: a fixed panel made of a transparent material, on which a C major (a minor) of the violin and a tone map including a temporary rising and falling tone based on the C major (a minor) are disposed; and the movable panel can move in parallel relative to the fixed panel, and a continuous turning bitmap is distributed on the movable panel. The movable panel is moved to enable different sections on the continuous tone-turning phoneme graph to be correspondingly overlapped below the transparent fixed panel, and a practicer can clearly see the overlapping condition of the upper layer and the lower layer due to the graph, so that the correlation between the tone after the tone turning is known. The fixed panel is marked in a staff mode, the exercise process is from the notes of the music book → the notes of the device → the fingering position, and is a process of addressing by looking at the picture.

Based on the above patent search, and in combination with the prior art device discovery, the prior beginner has the following disadvantages in practicing playing violin:

1. when a beginner exercises to play a violin, the correct finger position cannot be quickly identified and found, so that playing is wrong, the finger position paste is generally adopted and pasted on a finger board for marking the finger position, but the finger position paste is easy to shift and drop after being heated, and the surface of the finger position paste is easy to be blurred due to touch, so that the finger position paste is adopted for marking the finger position, and the finger position paste has great defects, and the finger position paste used for finger position identification cannot be used by blind persons;

2. the beginner often does not know where the error of the beginner appears because of difficult control of the intonation during practice, and adopts additional auxiliary equipment, so that the user not only occupies more space, but also is inconvenient to carry;

3. the beginner inevitably has nervous emotion due to just contacting with the performance of the musical instrument, and once the stress is transited, palms sweat and the body generates heat, so that the performance effect of the self performance is influenced.

Disclosure of Invention

In order to solve the technical problems, the invention provides a novel violin structure capable of conveniently and quickly identifying finger positions, and aims to solve the problems that when a beginner uses the violin, the correct finger positions cannot be quickly identified and found, so that playing errors occur, the existing finger position labeling mode is adopted, the existing finger position labeling mode for finger position labeling has a large defect, the existing finger position labeling mode for finger position identification cannot be suitable for the blind, the beginner cannot master the intonation easily during practice, the position of the error of the beginner is not known, additional auxiliary equipment is adopted, a user occupies a large space, carrying is inconvenient, and the beginner cannot avoid nervous emotion due to the fact that the beginner just contacts with a musical instrument for playing, and once the finger is tensed and transited, the palm sweats and the body heats, and the playing effect of playing of the beginner is affected.

The invention relates to a novel violin structure with the purpose and the effect of conveniently and quickly identifying finger positions, which are achieved by the following specific technical means:

a novel violin structure convenient and fast to recognize finger positions comprises a violin, a fingerboard, a first circular groove structure, a second circular groove structure, a chin rest, a waist line groove, a first finger position mark cylindrical block, a first limit circular through hole, a first hard rubber cylindrical block, a second finger position mark cylindrical block, a second limit circular through hole, a second hard rubber cylindrical block, a limit clamping mechanism, a metal ball, a spring A, a limit cavity, a hemispherical cavity, a cylindrical cavity, a voice position mark pattern, a Braille voice position symbol bulge, an expansion block, a hinge shaft, an exhaust hole, a shutter, a butt joint blind hole, a spring travel hole, a storage battery, a locking bolt, an outer baffle body, a pull ring, an inner baffle body, a spring B, an outer baffle disc, a recorder control key, a guide groove, a limit column, a fan switch, a locking hole, a fan, a spring C, a single-row finger position mark block group and a single-row finger position mark block placement groove group;

eight single-row index mark block placing groove groups are formed in the arc-shaped surface at the top end of the violin middle fingerboard, corresponding to violin handle positions, and each single-row index mark block placing groove group is formed by two first circular groove structures and two second circular groove structures; the two second circular groove structures are adjacent in position and are distributed in a left-right symmetrical mode; the left adjacent part of the second circular groove structure positioned on the left side in the two second circular groove structures is provided with one first circular groove structure, the right adjacent part of the second circular groove structure positioned on the right side is also provided with one first circular groove structure, and the two first circular groove structures are distributed in a bilateral symmetry manner;

the inner peripheral surface of the second circular groove structure is bilaterally symmetrical and is provided with two limiting cavities, and the limiting cavities are formed by a hemispherical cavity and a cylindrical cavity; two cylindrical cavities in the limiting cavities, which are formed in the inner peripheral surface of the second circular groove structure, are respectively formed in the inner walls of the left side and the right side of the inner peripheral surface of the adjacent second circular groove structure, and the two cylindrical cavities are provided with hemispherical cavities communicated with the two cylindrical cavities relative to the inner peripheral surface of the second circular groove structure, but only partial semicircular ends of the two hemispherical cavities are communicated with the inner peripheral surface of the second circular groove structure;

the inner peripheral surface of the first circular groove structure is also provided with two limiting cavities which are formed by a hemispherical cavity and a cylindrical cavity in a bilateral symmetry manner; two cylindrical cavities in the limiting cavities, which are formed in the inner peripheral surface of the first circular groove structure, are respectively formed in the inner walls of the left side and the right side of the inner peripheral surface of the adjacent first circular groove structure, and the two cylindrical cavities are provided with hemispherical cavities communicated with the cylindrical cavities relative to the inner peripheral surface of the first circular groove structure, but only partial semicircular ends of the two hemispherical cavities are communicated with the inner peripheral surface of the first circular groove structure. The diameter of the hemispherical cavity is consistent with that of the cylindrical cavity;

a group of limiting and clamping mechanisms are arranged in each limiting cavity, and each limiting and clamping mechanism consists of a metal ball and a spring A; the metal ball is positioned in the hemispherical cavity in the limiting cavity, and the diameter of the metal ball is consistent with that of the hemispherical cavity; the metal ball is connected with the smooth end face of the cylindrical cavity in the limiting cavity through a spring A which is welded with each other; under the condition that the spring A in the cylindrical cavity is not completely compressed, the spring A pushes the metal ball to be matched with the inner end face of the hemispherical cavity, so that part of the semi-circular arc end of the metal ball is exposed out of the hemispherical cavity;

the number of the single-row index mark block groups is consistent with that of the single-row index mark block placing groove groups, and the single-row index mark block groups can be mutually matched in an inserted manner; two second index mark cylindrical blocks and two first index mark cylindrical blocks in the single-row index mark block group are respectively matched in an inserting manner in two second circular groove structures and two first circular groove structures in the single-row index mark block placing groove group;

the middle part of the outer peripheral surface of the first index mark cylindrical block is provided with a first limit circular through hole, and the diameter of the first limit circular through hole is consistent with that of a part of a semi-circular arc-shaped end of the semi-spherical cavity penetrating through the first circular groove structure; the top end surface of the first index mark cylindrical block is printed with a phoneme mark pattern corresponding to the current position of the first index mark cylindrical block by laser, and the bottom end surface of the first index mark cylindrical block is provided with a Braille phoneme symbol bulge corresponding to the phoneme mark pattern on the top end surface of the first index mark cylindrical block;

the middle part of the outer peripheral surface of the second index mark cylindrical block is provided with a second limit circular through hole, and the diameter of the second limit circular through hole is consistent with the diameter of a part of semi-circular arc-shaped end of the hemispherical cavity penetrating through the second circular groove structure; the top end face of the second index identification cylindrical block is printed with a phoneme identification pattern corresponding to the current position of the second index identification cylindrical block by laser, and the bottom end face of the second index identification cylindrical block is provided with a Braille phoneme symbol bulge corresponding to the phoneme identification pattern on the top end face of the second index identification cylindrical block;

an expansion block is arranged in the position on the right side of the chin rest arranged at the lower end of the violin, and the left end of the expansion block is rotatably connected to the side wall of the violin through a hinge shaft; a storage battery is embedded in the back plane of the violin, and a jack which can be charged through a USB is formed in the storage battery;

an air exhaust hole communicated with the inside is formed in the position, close to the unit position, on the side wall of the outer end of the expansion block, and a fan is arranged in the air exhaust hole; the fan is electrically connected with the storage battery, and the fan is connected with the storage battery in series through a fan switch embedded in the right end of the top plane of the expansion block;

a recorder is fixedly arranged in the left end of the top plane of the expanding block, and a recorder control key of the recorder is arranged at a position close to the edge of the outer end of the expanding block;

the middle part of the outer wall of the right end of the expansion block is provided with a butt-joint blind hole, and the lower end of the waist line groove on the right side of the violin is provided with a locking hole corresponding to the butt-joint blind hole; an outer baffle body with a slightly smaller diameter is arranged at the tangent position of the right end of the locking bolt and the outer baffle disc, and an annular pull ring is arranged at the outer end of the locking bolt.

Furthermore, the top end surface of the first index mark cylindrical block adopts an arc end surface structure, and a symmetrical structure is formed between the top end surface and the bottom end surface of the first index mark cylindrical block;

furthermore, when the first index mark cylindrical block is inserted into the first circular groove structure, and partial semi-circular arc ends of the metal balls in the two groups of limiting and clamping mechanisms are respectively contacted with two opening ends of the first limiting circular through hole in the first index mark cylindrical block, the upward top end surface or bottom end surface in the first index mark cylindrical block is coincided with the top end arc surface of the fingerboard;

furthermore, a first hard rubber cylindrical block is embedded between the top end surface and the bottom end surface of the first index mark cylindrical block, and the top end surface and the bottom end surface of the first hard rubber cylindrical block are respectively superposed with the top end surface and the bottom end surface of the first index mark cylindrical block;

furthermore, the top end surface of the second index marking cylindrical block adopts an arc end surface structure, and a symmetrical structure is formed between the top end surface and the bottom end surface of the second index marking cylindrical block;

further, when a second finger mark cylindrical block is inserted into the second circular groove structure, and partial semi-circular arc ends of the metal balls in the two groups of limiting clamping mechanisms are respectively contacted with two opening ends of a second limiting circular through hole in the second finger mark cylindrical block, the upward top end surface or bottom end surface in the second finger mark cylindrical block is superposed with the arc surface at the top end of the finger plate;

furthermore, a second hard rubber cylindrical block is embedded between the top end surface and the bottom end surface of the second index identification cylindrical block, and the top end surface and the bottom end surface of the second hard rubber cylindrical block are respectively superposed with the top end surface and the bottom end surface of the second index identification cylindrical block;

furthermore, the right end of the expanding block is tangent to the side edge of the lower end of a waist line groove arranged in the middle of the violin, and the external profile of the expanding block is consistent with the edge profile of the violin;

furthermore, a shutter is connected to the position, close to the outer end, of the air exhaust hole in a sliding mode, the shutter is made of sheet alloy which is consistent with the surface material of the violin, and the shutter is opened towards the left end;

furthermore, arc-shaped guide grooves with the hinge shaft as the center are formed in the top plane and the bottom plane of the expanding block, limiting columns are vertically arranged at the positions, opposite to the guide grooves, of the upper wall and the lower wall of the slotted hole corresponding to the violin and the expanding block, and when the expanding block is matched with the violin, the limiting columns are just located at the outer ends of the guide grooves;

furthermore, two symmetrical spring travel holes are formed in the side wall of the inner end of the expansion block, and the spring travel holes are also of an arc surface structure with the hinge shaft as a rotation center;

furthermore, a bent spring C is fixedly connected in the spring stroke hole, the inner end of the spring C is fixedly connected inside the violin, and when the expansion block is matched with the violin, the spring C is just in a compressed state;

furthermore, a locking bolt is arranged in the locking hole, an inner blocking body at the left end of the locking bolt is tangent to the inner wall of the locking hole, and the locking bolt at the right end of the inner blocking body is a cylinder with a reduced diameter;

furthermore, a spring B in a compressed state is sleeved on the locking bolt between the inner blocking body and the outer baffle disc of the locking Kong Youduan.

Compared with the prior art, the invention has the following beneficial effects:

when the violin is initially exercised by a normal person, because the top end surfaces of the first and second index mark cylindrical blocks are respectively printed with a sound level mark pattern corresponding to the current position by laser, the top end surfaces of the first and second index mark cylindrical blocks are respectively inserted into the first and second circular groove structures upwards, so that the normal person can quickly identify the position of the top end of the violin by the laser, and the correct laser observation of the top end of the first index mark cylindrical block can be ensured.

The violin designed by the application document can be converted into a mode for the blind to learn the violin once, and because the top end surface of the first finger position identification cylindrical block and the bottom end surface of the second finger position identification cylindrical block are both provided with the braille phoneme symbol bulges corresponding to the top end surface phoneme identification patterns, the bottom end surfaces of the first finger position identification cylindrical block and the second finger position identification cylindrical block can be respectively inserted into the first circular groove structure and the second circular groove structure in an upward mode, so that when the blind exercises the violin once, the blind can quickly and correctly identify and find the finger position by touching the braille phoneme symbol bulges arranged on the bottom end surfaces of the first finger position identification cylindrical block and the second finger position identification cylindrical block, the memory is enhanced, and the accuracy during playing is ensured.

First finger position sign cylinder piece and second finger position sign cylinder piece in this application file are equallyd divide and are do not inserted into first circular groove structure and the circular groove structure of second in to it is spacing via spacing fixture centre gripping, so it can not take place to shift, drop, the emergence of fuzzy scheduling problem like traditional violin indicates that the position is reminded used to point the position subsides, can guarantee lasting use.

This application file is because the fixed built-in recorder that has of the top planar left end of expansion piece, and the recorder control key setting of recorder is in the position department that is close to expansion piece outer end border, when expanding the piece and expanding the use, the recorder also can expose just, person of facilitating the use is when the violin of beginners, the temperament record that can be timely plays out, and at the exercise in-process that follows, can carry out timely correction according to not enough in the past, high durability and convenient use, and the structure can be built-in, when real stage performance, can retract into the violin main part.

The application document is characterized in that an exhaust hole communicated with the inside is formed in the position, close to a unit position, of the side wall of the outer end of the expansion block, a fan is arranged in the exhaust hole, arc-shaped guide grooves with hinge shafts as centers are formed in the top plane and the bottom plane of the expansion block in a matched mode, limiting columns are vertically arranged at positions, opposite to the guide grooves, of the upper wall and the lower wall of the slotted hole corresponding to the expansion block of the violin, the limiting columns are just located at the outer ends of the guide grooves when the expansion block is matched with the violin, the expansion block can rotate for 36 degrees with the hinge shafts as centers, the exhaust hole in the expansion block can just correspond to the neck position of a user, dryness heat generated by excessive tension of the user is reduced, the user is assisted to enter a playing state better, a blind window is connected to the position, the blind is formed by a sheet alloy consistent with the surface material of the violin in a sliding mode, the blind is opened towards the left end, the blind is closed to play a dustproof effect when the window is not used, and only when the window is used, one side opened.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic axial view of the present invention.

Fig. 2 is a schematic view of the enlarged structure of a part a in fig. 1 according to the present invention.

Fig. 3 is a schematic top view of the present invention.

FIG. 4 is a partial cross-sectional structural view of B-B in FIG. 3 according to the present invention.

Fig. 5 is a partial enlarged structural view of the present invention at C in fig. 4.

Fig. 6 is a partial enlarged structural view at D in fig. 4 according to the present invention.

Fig. 7 is a schematic structural view of the single row of the finger mark block set and the limiting and clamping mechanism in fig. 4 in a state of being removed.

Fig. 8 is a partial enlarged structural view at E in fig. 7 according to the present invention.

FIG. 9 is a schematic structural diagram of the present invention in FIG. 1, in which the set of row pointer blocks is removed.

FIG. 10 is a schematic top-view structure diagram of a single row index block set according to the present invention.

Fig. 11 is a bottom view of the single row of index block of the present invention.

Fig. 12 is a schematic top-end surface axial view of the first index mark cylinder block of the present invention.

FIG. 13 is a schematic view of the bottom end surface of the first index cylinder of the present invention.

Fig. 14 is a schematic axial view of the top end of the second index mark cylinder block.

FIG. 15 is a schematic bottom end view of a second index marking cylinder according to the present invention.

Fig. 16 is a schematic structural diagram of the single-row group of index blocks in fig. 1 in an inverted state.

Fig. 17 is a schematic view of the invention at a partial enlargement of F in fig. 16.

Fig. 18 is a schematic view of the right rear upper axial view of the present invention.

FIG. 19 is a front right lower axial view of the present invention.

Fig. 20 is an enlarged view of the portion G of fig. 19 according to the present invention.

FIG. 21 is a schematic diagram of the expanded block in an expanded state, viewed from the right, rear, and upper side.

FIG. 22 is a view showing a structure of a blind in a rolled state when the expansion blocks of the present invention are unfolded.

Fig. 23 is an enlarged view of the portion H of fig. 23 according to the present invention.

FIG. 24 is a front right upper axial view of the expanded block of the present invention in its expanded state.

Fig. 25 is an axial view structural schematic diagram of the state that the expanding block is separated from the violin.

Fig. 26 is a schematic view of a half-section separation structure at the position of a locking hole when the violin of the present invention has no expansion block.

Fig. 27 is an enlarged structural view of the portion I in fig. 26 according to the present invention.

Fig. 28 is a schematic view of a partial axial structure of the locking stud of the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a violin; 101. a fingerboard; 102. a chin rest; 103. a waist line slot; 10101. a first circular groove structure; 10102. a second circular groove structure; 2. the first index mark cylinder block; 201. a first limiting circular through hole; 202. a first rigid rubber cylindrical block; 3. the second index marks the cylindrical block; 301. a second limiting circular through hole; 302. a second hard rubber cylindrical block; 4. a limiting and clamping mechanism; 401. a metal ball; 402. a spring A; 5. a limiting cavity; 501. a hemispherical cavity; 502. a cylindrical cavity; 6. a phoneme identification pattern; 7. the Braille phonological symbol is convex; 8. expanding blocks; 801. a hinge shaft; 802. an air exhaust hole; 803. a blind window; 804. butting blind holes; 805. a spring travel hole; 9. a storage battery; 10. locking the bolt; 1001. an outer barrier; 1002. a pull ring; 1003. an inner baffle; 1004. a spring B; 11. an outer baffle disc; 12. a recorder; 1201. a recorder control key; 13. a guide groove; 14. a limiting column; 15. a fan switch; 16. a locking hole; 17. a fan; 18. a spring C; 01. a single row of index block groups; 02. the groove group is placed on the single-row index mark block.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment is as follows:

as shown in figures 1 to 28:

the invention provides a novel violin structure capable of conveniently and quickly identifying finger positions, which comprises: violin 1, fingerboard 101, first circular groove structure 10101, second circular groove structure 10102, chin rest 102, waistline groove 103, first index marking cylinder block 2, first limit circular through hole 201, first hard rubber cylinder block 202, second index marking cylinder block 3, second limit circular through hole 301, second hard rubber cylinder block 302, limit clamping mechanism 4, metal ball 401, spring a402, limit cavity 5, hemispherical cavity 501, cylinder cavity 502, phoneme marking pattern 6, braille phoneme symbol projection 7, expansion block 8, hinge 801, exhaust hole 802, louver 803, butt blind hole 804, spring travel hole 805, storage battery 9, locking bolt 10, outer baffle 1001, pull ring 1002, inner baffle 1003, spring B1004, outer baffle disc 11, recorder 12, recorder control key 1201, guide groove 13, limit column 14, fan switch 15, locking hole 16, fan 17, spring C18, single row index marking block group 01 and single row index groove group 02;

eight single-row index mark block placing groove groups 02 are formed on the arc-shaped surface at the top end of the fingerboard 101 in the violin 1 correspondingly to the violin handle positions, and each single-row index mark block placing groove group 02 is formed by two first circular groove structures 10101 and two second circular groove structures 10102; as shown in fig. 4, two second circular groove structures 10102 are adjacent to each other and are distributed in a left-right symmetrical manner; a left adjacent part of the second circular groove structure 10102 on the left side of the two second circular groove structures 10102 is provided with a first circular groove structure 10101, as shown in fig. 4, a right adjacent part of the second circular groove structure 10102 on the right side is also provided with a first circular groove structure 10101, and the two first circular groove structures 10101 are distributed in a left-right symmetrical manner;

as shown in fig. 8, two limiting cavities 5 are symmetrically arranged on the inner peripheral surface of the second circular groove structure 10102, and the limiting cavities 5 are formed by a hemispherical cavity 501 and a cylindrical cavity 502; two cylindrical cavities 502 in the two limiting cavities 5 formed in the inner peripheral surface of the second circular groove structure 10102 are respectively formed in the inner walls of the left side and the right side of the inner peripheral surface of the adjacent second circular groove structure 10102, and the two cylindrical cavities 502 are respectively formed with a hemispherical cavity 501 communicated with the inner peripheral surface of the second circular groove structure 10102 relative to the inner peripheral surface of the second circular groove structure 10102, but only partial semicircular ends of the two hemispherical cavities 501 are communicated with the inner peripheral surface of the second circular groove structure 10102;

as shown in fig. 8, the inner circumferential surface of the first circular groove structure 10101 is also provided with two limiting cavities 5 formed by the hemispherical cavity 501 and the cylindrical cavity 502 in a left-right symmetrical manner; two position limiting cavities 5 arranged on the inner peripheral surface of the first circular groove structure 10101 are provided with cylindrical cavities 502, the cylindrical cavities 502 are respectively arranged on the inner walls of the left side and the right side of the inner peripheral surface of the adjacent first circular groove structure 10101, a hemispherical cavity 501 communicated with the cylindrical cavities is arranged on each of the two position limiting cavities 502 relative to the inner peripheral surface of the first circular groove structure 10101, and only partial semicircular arc ends of the two position hemispherical cavities 501 are communicated with the inner peripheral surface of the first circular groove structure 10101. The diameter of the hemispherical cavity 501 is consistent with that of the cylindrical cavity 502;

as shown in fig. 4, a group of limiting and clamping mechanisms 4 is arranged in each limiting cavity 5, and the limiting and clamping mechanisms 4 are formed by metal balls 401 and springs a 402; the metal ball 401 is positioned in the hemispherical cavity 501 in the limiting cavity 5, and the diameter of the metal ball 401 is consistent with that of the hemispherical cavity 501; the metal ball 401 is connected with the smooth end surface of the cylindrical cavity 502 in the limit cavity 5 through a spring A402 which is welded with each other; the spring A402 in the cylindrical cavity 502 is in an incompletely compressed state, and the spring A402 pushes the metal ball 401 to be matched with the inner end face of the hemispherical cavity 501, so that part of the semi-circular arc end of the metal ball is exposed out of the hemispherical cavity 501;

the number of the single-row index mark block groups 01 is consistent with that of the single-row index mark block placing groove groups 02, and the single-row index mark block groups can be mutually matched in an inserted manner, wherein each single-row index mark block group 01 consists of two first index mark cylindrical blocks 2 and two second index mark cylindrical blocks 3; two second index mark cylindrical blocks 3 and two first index mark cylindrical blocks 2 in a group of single-row index mark block groups 01 are respectively matched in an inserting manner in two second circular groove structures 10102 and two first circular groove structures 10101 in a group of single-row index mark block placement groove groups 02;

as shown in fig. 12 and 13, a first limiting circular through hole 201 is formed in the middle of the outer peripheral surface of the first index mark cylindrical block 2, and the diameter of the first limiting circular through hole 201 is consistent with the diameter of a partial semi-circular arc end of the hemispherical cavity 501 penetrating through the first circular groove structure 10101; a phoneme mark pattern 6 corresponding to the current position of the first digit mark cylindrical block 2 is printed on the top end surface of the first digit mark cylindrical block 2 by laser, and a Braille phoneme symbol bulge 7 corresponding to the phoneme mark pattern 6 on the top end surface of the first digit mark cylindrical block 2 is arranged on the bottom end surface of the first digit mark cylindrical block;

as shown in fig. 14 and 15, a second limiting circular through hole 301 is formed in the middle of the outer peripheral surface of the second index mark cylindrical block 3, and the diameter of the second limiting circular through hole 301 is consistent with the diameter of a part of the semi-circular arc-shaped end of the hemispherical cavity 501 penetrating through the second circular groove structure 10102; the top end face of the second index identification cylindrical block 3 is printed with a phoneme identification pattern 6 corresponding to the current position of the second index identification cylindrical block by laser, and the bottom end face of the second index identification cylindrical block 3 is provided with a Braille phoneme symbol bulge 7 corresponding to the phoneme identification pattern 6 on the top end face of the second index identification cylindrical block;

an expansion block 8 is arranged in the position on the right side of the chin rest 102 arranged at the lower end of the violin 1, and the left end of the expansion block 8 is rotatably connected to the side wall of the violin 1 through a hinge shaft 801; a storage battery 9 is embedded in the back plane of the violin 1, and a jack which can be charged through a USB is formed in the storage battery 9;

an air exhaust hole 802 communicated with the inside is formed on the side wall of the outer end of the expansion block 8 close to the unit position, and a fan 17 is arranged in the air exhaust hole 802; the fan 17 is electrically connected with the storage battery 9, and the fan 17 is connected with the storage battery 9 in series through a fan switch 15 embedded in the right end of the top plane of the expansion block 8;

a recorder 12 is fixedly arranged in the left end of the top plane of the expansion block 8, and a recorder control key 1201 of the recorder 12 is arranged at a position close to the edge of the outer end of the expansion block 8;

the middle part of the outer wall of the right end of the expansion block 8 is provided with a butt-joint blind hole 804, and the lower end of the waist line groove 103 on the right side of the violin 1 is provided with a locking hole 16 corresponding to the butt-joint blind hole 804; an outer stopper 1001 having a slightly smaller diameter is provided at a position where the right end of the locking bolt 10 is tangent to the outer stopper 11, and an annular tab 1002 is provided at the outer end of the locking bolt 10.

The top end face of the first index mark cylindrical block 2 is of an arc-shaped end face structure, and a symmetrical structure is formed between the top end face and the bottom end face of the first index mark cylindrical block 2, so that when the first index mark cylindrical block 2 is inserted into the first circular groove structure 10101, the upward top end face or the upward bottom end face of the first index mark cylindrical block is guaranteed to coincide with the arc-shaped face of the top end of the finger plate 101.

When the first index mark cylindrical block 2 is inserted into the first circular groove structure 10101, and partial semi-circular arc ends of the metal balls 401 in the two groups of limiting clamping mechanisms 4 are respectively contacted with two opening ends of the first limiting circular through hole 201 in the first index mark cylindrical block 2, the upward top end surface or bottom end surface in the first index mark cylindrical block 2 coincides with the top end arc surface of the finger plate 101, so that the first index mark cylindrical block 2 cannot generate excessive bulge, and the normal playing of the violin cannot be influenced.

A first hard rubber cylindrical block 202 is embedded between the top end face and the bottom end face of the first index mark cylindrical block 2, and the top end face and the bottom end face of the first hard rubber cylindrical block 202 are respectively overlapped with the top end face and the bottom end face of the first index mark cylindrical block 2, so that a sharp object, a needle and the like can be conveniently inserted into the first hard rubber cylindrical block 202, and the first index mark cylindrical block 2 can be pulled out of the first circular groove structure 10101.

The top end face of the second index mark cylindrical block 3 is of an arc end face structure, and a symmetrical structure is formed between the top end face and the bottom end face of the second index mark cylindrical block 3, so that when the second index mark cylindrical block 3 is inserted into the second circular groove structure 10102, the upward top end face or the upward bottom end face of the second index mark cylindrical block is guaranteed to coincide with the arc face of the top end of the finger plate 101.

Wherein, in second finger sign cylinder piece 3 inserts the circular groove structure 10102 of second, and the partial half-circular arc end of metal ball 401 contacts with the two open ends of the spacing circular through-hole 301 of second in the two sets of spacing fixture 4 respectively in the two sets of spacing fixture 4, upward top end face or bottom end face coincide with fingerboard 101 top end arc face in the second finger sign cylinder piece 3, so excessive arch can not appear in second finger sign cylinder piece 3, it can not influence the violin and normally plays.

A second hard rubber cylindrical block 302 is embedded between the top end face and the bottom end face of the second index mark cylindrical block 3, and the top end face and the bottom end face of the second hard rubber cylindrical block 302 are respectively overlapped with the top end face and the bottom end face of the second index mark cylindrical block 3, so that a sharp object, a needle and the like can be conveniently inserted into the second hard rubber cylindrical block 302, and the second index mark cylindrical block 3 can be pulled out of the second circular groove structure 10102.

The right end of the expansion block 8 is tangent to the lower end side of the waist line groove 103 formed in the middle of the violin 1, and the outer contour of the expansion block 8 is identical to the edge contour of the violin 1, as shown in fig. 18, so that the expansion block 8 can be hidden in the violin 1 to form an integral structure.

Wherein, the air exhausting hole 802 is connected with a louver 803 near the outer end in a sliding way, the louver 803 is made of sheet alloy which is consistent with the surface material of the violin 1, and the louver 803 is opened towards the left end, as shown in fig. 22 and fig. 23, when the violin is not used, the louver 803 is closed to play a dustproof role, and when the violin is used, the violin can be used only by opening towards one side.

Wherein, the top plane and the bottom plane of the expanding block 8 are both provided with arc-shaped guide grooves 13 with a hinge 801 as the center, and the upper wall and the lower wall of the slotted hole corresponding to the violin 1 and the expanding block 8 are vertically provided with limit posts 14 at the positions corresponding to the guide grooves 13, when the expanding block 8 is fitted with the violin 1, the limit posts 14 are just positioned at the outer ends of the guide grooves 13, as shown in fig. 23 and fig. 25, so that the expanding block 8 can rotate for 36 degrees with the hinge 801 as the center, and further the air exhaust holes 802 on the expanding block 8 just can just correspond to the neck position of a user, so as to reduce the dry heat feeling caused by over-strain of the user and assist the user to better enter a playing state.

Two symmetrical spring stroke holes 805 are formed in the inner end side wall of the expanding block 8, and the spring stroke holes 805 are also of an arc-shaped structure with the hinge shaft 801 as a rotation center, as shown in fig. 25, so that a circumferential path capable of rotating is provided.

Wherein, a curved spring C18 is fixedly connected in the spring stroke hole 805, the inner end of the spring C18 is fixedly connected in the violin 1, and when the expansion block 8 is engaged with the violin 1, the spring C18 is just in a compressed state, as shown in fig. 24 and 25, when the expansion block 8 is disengaged from the locked state, the expansion block 8 can be rapidly expanded under the action of the spring C18.

The locking hole 16 is internally provided with a locking bolt 10, the inner stopper 1003 at the left end of the locking bolt 10 is tangent to the inner wall of the locking hole 16, and the locking bolt 10 at the right end of the inner stopper 1003 is a cylinder with a reduced diameter, so that the locking bolt 10 can move in the locking hole 16 and can be prevented from being directly drawn out from the right end.

Wherein, the spring B1004 in a compressed state is sleeved on the locking bolt 10 between the inner blocking body 1003 and the outer blocking disc 11 at the right end of the locking hole 16, as shown in fig. 27 and 28, when the locking bolt 10 is pulled rightwards, so that the inner blocking body 1003 is separated from the butt-joint blind hole 804, the expansion block 8 can be separated from the locked state, and springs open by itself.

When in use:

because eight single-row index mark block placing groove groups 02 are formed on the arc-shaped surface at the top end of the fingerboard 101 in the violin 1 correspondingly to the violin handle positions, and the single-row index mark block groups 01 are arranged, the number of the single-row index mark block placing groove groups is consistent with the number of the single-row index mark block placing groove groups 02, and the single-row index mark block groups 01 can be mutually matched in an inserted manner, during installation, two second index mark cylindrical blocks 3 and two first index mark cylindrical blocks 2 in one single-row index mark block group 01 are respectively matched in two second circular groove structures 10102 and two first circular groove structures 10101 in one single-row index mark block placing groove group 02 in an inserted manner;

when a normal person learns to practice the violin 1 in the first place, the top end surface of the first finger position identification cylindrical block 2 and the top end surface of the second finger position identification cylindrical block 3 are both printed with the phoneme identification patterns 6 corresponding to the current positions of the first finger position identification cylindrical block 2 and the second finger position identification cylindrical block 3 in a laser mode, so that the top end surfaces of the first finger position identification cylindrical block 2 and the second finger position identification cylindrical block 3 are upwards inserted into the first circular groove structure 10101 and the second circular groove structure 10102 respectively;

when the first index mark cylindrical block 2 is inserted into the first circular groove structure 10101, part of the semi-circular arc ends of the metal balls 401 in the two groups of limiting clamping mechanisms 4 in the first circular groove structure 10101 are respectively contacted with two open ends of the first limiting circular through hole 201 in the first index mark cylindrical block 2, so that the position of the first index mark cylindrical block 2 is limited to be kept still, and because the top end face of the first index mark cylindrical block 2 adopts an arc end face structure, the upward top end face of the first index mark cylindrical block is superposed with the arc face at the top end of the fingerboard 101, and the normal playing of the violin cannot be influenced;

when the second index mark cylindrical block 3 is inserted into the second circular groove structure 10102, part of the semi-circular ends of the metal balls 401 in the two groups of limit clamping mechanisms 4 in the second circular groove structure 10102 are respectively contacted with two open ends of the second limit circular through hole 301 in the second index mark cylindrical block 3, so that the position of the second index mark cylindrical block 3 is limited and kept still, and because the top end face of the second index mark cylindrical block 3 adopts an arc end face structure, the upward top end face of the second index mark cylindrical block 3 is superposed with the arc-shaped face of the top end of the finger plate 101, and the normal playing of the violin cannot be influenced;

therefore, when a normal person exercises the violin 1 in beginner, the trainee can quickly and correctly identify and find the finger position by observing the laser-printed phoneme identification pattern 6 corresponding to the current position of the violin, which is printed on the top end surface of the first finger position identification cylindrical block 2 and the top end surface of the second finger position identification cylindrical block 3, so that the accuracy of the sound during playing is ensured;

furthermore, the violin designed by the present application can be converted into a mode for the blind to exercise the violin 1 for beginners, and because the top end surface of the first finger position identification cylindrical block 2 and the bottom end surface of the second finger position identification cylindrical block 3 are both provided with the braille phoneme symbol bulges 7 corresponding to the phoneme identification patterns 6 on the top end surface thereof, the bottom end surfaces of the first finger position identification cylindrical block 2 and the second finger position identification cylindrical block 3 can be respectively inserted into the first circular groove structure 10101 and the second circular groove structure 10102 in an upward manner;

in the replacement mode, because a first hard rubber cylindrical block 202 is embedded between the top end surface and the bottom end surface of the first index marking cylindrical block 2, and the top end surface and the bottom end surface of the first hard rubber cylindrical block 202 are respectively overlapped with the top end surface and the bottom end surface of the first index marking cylindrical block 2, a sharp object, a needle and the like can be inserted into the first hard rubber cylindrical block 202, so that the first index marking cylindrical block 2 is pulled out from the first circular groove structure 10101, the first index marking cylindrical block 2 is turned over to enable the bottom end surface to face upwards, then the turned first index marking cylindrical block 2 is inserted into the first circular groove structure 10101 until the two groups of limit clamping mechanisms 4 in the first circular groove structure 10101 are respectively contacted with the two open ends of the first limit circular through hole 201, so that the position of the first index marking cylindrical block 2 is kept motionless, and the symmetrical bottom end surface of the first index marking cylindrical block 2 is not influenced by the arc-shaped surfaces of the first index marking cylindrical block 2 and the top end surface of the first index marking cylindrical block 2 is overlapped with the top end surface of the first index marking cylindrical block 101, so that the top end surface of the first index marking cylindrical block 2 is not overlapped with the top end surface of the normal small arc-shaped cylindrical block 101;

when in replacement mode, a second hard rubber cylindrical block 302 is embedded between the top end surface and the bottom end surface of the second index mark cylindrical block 3, and the top end surface and the bottom end surface of the second hard rubber cylindrical block 302 are respectively superposed with the top end surface and the bottom end surface of the second index mark cylindrical block 3, so that the second index mark cylindrical block 3 can be pulled out from the second circular groove structure 10102 by inserting a sharp object, a needle and the like into the second hard rubber cylindrical block 302, thereby turning the second index mark cylindrical block 3 to enable the bottom end surface to face upwards, then inserting the turned second index mark cylindrical block 3 into the second circular groove structure 10102, part of the semi-circular arc ends of the metal balls 401 in the two groups of limiting and clamping mechanisms 4 in the second circular groove structure 10102 are respectively contacted with two opening ends of a second limiting circular through hole 301 in the second index marking cylindrical block 3, so that the position of the second index marking cylindrical block 3 is limited to be kept still, and because a symmetrical structure is formed between the top end face and the bottom end face of the second index marking cylindrical block 3, the upward bottom end face of the second index marking cylindrical block is also superposed with the arc face of the top end of the fingerboard 101, and the normal playing of the violin cannot be influenced;

therefore, when the blind person exercises the violin 1 in beginners, the blind person can quickly and correctly identify and find the finger positions and strengthen the memory to ensure the accuracy of the sound during playing by touching the Braille phoneme symbol bulges 7 arranged on the bottom end surfaces of the first finger position identification cylindrical block 2 and the second finger position identification cylindrical block 3;

the first finger position identification cylindrical block 2 and the second finger position identification cylindrical block 3 in the application document are respectively inserted into the first circular groove structure 10101 and the second circular groove structure 10102 and are clamped and limited by the limiting and clamping mechanism 4, so that the problems of displacement, falling, fuzziness and the like of a finger position paste used for the finger position reminding of a traditional violin can be avoided, and the durable use can be ensured;

when the violin is used for violin training, as the arc-shaped guide grooves 13 taking the hinge shaft 801 as the center are formed in the top plane and the bottom plane of the expanding block 8, the limiting columns 14 are vertically arranged at the positions, opposite to the guide grooves 13, of the upper wall and the lower wall of the slotted hole corresponding to the violin 1 and the expanding block 8, when the expanding block 8 is matched with the violin 1, the limiting columns 14 are just positioned at the outer end of the guide grooves 13, so that the expanding block 8 can rotate for 36 degrees by taking the hinge shaft 801 as the center, further, the air exhaust holes 802 on the expanding block 8 just correspond to the neck position of a user, the dry heat feeling generated by the over-tension of the user is reduced, the user is assisted to better enter a playing state, the louver 803 is connected to the position, close to the outer end of the air exhaust holes 802, is made of sheet alloy consistent with the surface material of the violin 1, and is opened to the left end, when the violin use, the louver 803 is closed to play a dustproof effect, and when the violin use, the violin the use, only need to be opened to one side;

when stage performance is carried out, the right end of the expanding block 8 is tangent to the lower end side of the waist line groove 103 arranged in the middle of the violin 1, and the external profile of the expanding block 8 is consistent with the edge profile of the violin 1, so that the expanding block 8 can be hidden in the violin 1 to form an integral structure, and the normal use of the violin 1 cannot be influenced;

two symmetrical spring stroke holes 805 are formed in the side wall of the inner end of the expansion block 8, the spring stroke holes 805 are also of an arc-shaped structure with the hinge shaft 801 as a rotation center, so that a circumferential path capable of rotating is provided, a bent spring C18 is fixedly connected into the spring stroke holes 805, the inner end of the spring C18 is fixedly connected into the violin 1, when the expansion block 8 is matched with the violin 1, the spring C18 is just in a compressed state, and when the expansion block 8 is separated from a locking state, the expansion block 8 can be quickly expanded under the action of the spring C18;

when the expansion block 8 needs to be locked, the locking bolt 10 is arranged in the locking hole 16, the inner baffle 1003 at the left end of the locking bolt 10 is tangent to the inner wall of the locking hole 16, the locking bolt 10 at the right end of the inner baffle 1003 is a cylinder with a reduced diameter, so that the locking bolt 10 can move in the locking hole 16 and can be prevented from being directly pulled out from the right end, the spring B1004 in a compressed state is sleeved on the locking bolt 10 between the inner baffle 1003 and the outer baffle disc 11 at the right end of the locking hole 16, and when the locking bolt 10 is pulled out rightwards, the expansion block 8 can be separated from a locked state and can be automatically ejected when the inner baffle 1003 is separated from the butt blind hole 804.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a convenient quick discernment points novel violin structure of position which characterized in that: this convenient quick discernment indicates novel violin structure of position includes: the device comprises a violin (1), a fingerboard (101), a first circular groove structure (10101), a second circular groove structure (10102), a chin rest (102), a waist line groove (103), a first position indication cylindrical block (2), a first limit circular through hole (201), a first hard rubber cylindrical block (202), a second position indication cylindrical block (3), a second limit circular through hole (301), a second hard rubber cylindrical block (302), a limit clamping mechanism (4), a metal ball (401), a spring A (402), a limit cavity (5), a hemispherical cavity (501), a cylindrical cavity (502), a sound position indication pattern (6), a Braille sound position symbol bulge (7), an expansion block (8), a hinge shaft (801), an exhaust hole (802), a blind window (803), a butt joint blind hole (804), a spring travel hole (805), a storage battery (9), a locking bolt (10), an outer baffle (1002), a pull ring (1002), an inner baffle (1201), a spring B (1003), an outer baffle disc (11), a recorder (12), a control key (13), a locking key groove (13), a guide switch (15), a single sound recording unit (17), a single recording unit (17) and a single recording unit identification block group (17);

eight single-row index mark block placing groove groups (02) are formed in the arc-shaped surface of the top end of the fingerboard (101) in the violin (1) and correspond to violin handle positions, and each single-row index mark block placing groove group (02) is formed by two first circular groove structures (10101) and two second circular groove structures (10102); the two second circular groove structures (10102) are adjacent in position, and are distributed in a left-right symmetrical mode; the adjacent part at the left side of the second circular groove structure (10102) at the left side of the two second circular groove structures (10102) is provided with one first circular groove structure (10101), the adjacent part at the right side of the second circular groove structure (10102) at the right side is also provided with one first circular groove structure (10101), and the two first circular groove structures (10101) are distributed in a left-right symmetrical manner;

the inner peripheral surface of the second circular groove structure (10102) is bilaterally symmetrical and is provided with two limiting cavities (5), and the limiting cavities (5) are formed by a hemispherical cavity (501) and a cylindrical cavity (502); two cylindrical cavities (502) in the limiting cavity (5) arranged on the inner peripheral surface of the second circular groove structure (10102) are respectively arranged on the inner walls of the left side and the right side of the inner peripheral surface of the adjacent second circular groove structure (10102), and the two cylindrical cavities (502) are respectively provided with a hemispherical cavity (501) communicated with the cylindrical cavities relative to the inner peripheral surface of the second circular groove structure (10102), but only partial semicircular ends of the two hemispherical cavities (501) are communicated with the inner peripheral surface of the second circular groove structure (10102);

the inner peripheral surface of the first circular groove structure (10101) is also provided with two limiting cavities (5) which are symmetrically arranged left and right and are formed by a hemispherical cavity (501) and a cylindrical cavity (502); the inner peripheral surface of the first circular groove structure (10101) is provided with two middle cylindrical cavities (502) of the limiting cavity (5), the middle cylindrical cavities are respectively arranged on the inner walls of the left side and the right side of the inner peripheral surface of the adjacent first circular groove structure (10101), the two middle cylindrical cavities (502) are respectively provided with a hemispherical cavity (501) communicated with the middle cylindrical cavities (501) relative to the inner peripheral surface of the first circular groove structure (10101), only partial semicircular ends of the two middle cylindrical cavities (501) are communicated with the inner peripheral surface of the first circular groove structure (10101), and the diameter of the hemispherical cavity (501) is consistent with that of the cylindrical cavity (502);

a group of limiting and clamping mechanisms (4) are arranged in each limiting cavity (5), and the limiting and clamping mechanisms (4) are formed by metal balls (401) and springs A (402); the metal ball (401) is positioned at the hemispherical cavity (501) in the limiting cavity (5), and the diameter of the metal ball (401) is consistent with that of the hemispherical cavity (501); the metal ball (401) is connected with the smooth end face of the cylindrical cavity (502) in the limiting cavity (5) through a spring A (402) which is welded with the metal ball; the spring A (402) positioned in the cylindrical cavity (502) is in an incompletely compressed state, and the spring A (402) pushes the metal ball (401) to be matched with the inner end surface of the hemispherical cavity (501), so that part of the semi-circular arc end of the spring A is exposed out of the hemispherical cavity (501);

the number of the single-row index mark block groups (01) is consistent with the number of the single-row index mark block placing groove groups (02), and the single-row index mark block groups (01) can be mutually matched in an inserted manner, and each single-row index mark block group (01) consists of two first index mark cylindrical blocks (2) and two second index mark cylindrical blocks (3); two second index mark cylindrical blocks (3) and two first index mark cylindrical blocks (2) in one group of single-row index mark block groups (01) are respectively matched in an inserting manner in two second circular groove structures (10102) and two first circular groove structures (10101) in one group of single-row index mark block placement groove groups (02);

the middle part of the outer peripheral surface of the first index mark cylindrical block (2) is provided with a first limit circular through hole (201), and the diameter of the first limit circular through hole (201) is consistent with the diameter of a part of a semi-circular arc end of the hemispherical cavity (501) penetrating through the first circular groove structure (10101); the top end surface of the first index mark cylindrical block (2) is printed with a phoneme mark pattern (6) corresponding to the current position of the first index mark cylindrical block by laser, and the bottom end surface of the first index mark cylindrical block (2) is provided with a Braille phoneme symbol bulge (7) corresponding to the phoneme mark pattern (6) on the top end surface;

the middle part of the outer peripheral surface of the second index mark cylindrical block (3) is provided with a second limit circular through hole (301), and the diameter of the second limit circular through hole (301) is consistent with the diameter of a part of a semi-circular arc end of the hemispherical cavity (501) penetrating through the second circular groove structure (10102); the top end face of the second finger mark cylindrical block (3) is printed with a phoneme mark pattern (6) corresponding to the current position of the second finger mark cylindrical block by laser, and the bottom end face of the second finger mark cylindrical block (3) is provided with a Braille phoneme symbol bulge (7) corresponding to the phoneme mark pattern (6) on the top end face of the second finger mark cylindrical block;

an expansion block (8) is arranged in the position on the right side of a chin rest (102) arranged at the lower end of the violin (1), and the left end of the expansion block (8) is rotatably connected to the side wall of the violin (1) through a hinge shaft (801); a storage battery (9) is embedded in the back plane of the violin (1), and a jack which can be charged through a USB is formed in the storage battery (9);

an air exhaust hole (802) communicated with the inside is formed in the position, close to a unit position, on the side wall of the outer end of the expansion block (8), and a fan (17) is arranged in the air exhaust hole (802); the fan (17) is electrically connected with the storage battery (9), and the fan (17) is connected with the storage battery (9) in series through a fan switch (15) embedded in the right end of the top plane of the expansion block (8);

a recorder (12) is fixedly arranged in the left end of the top plane of the expanding block (8), and a recorder control key (1201) of the recorder (12) is arranged at a position close to the edge of the outer end of the expanding block (8);

a butt joint blind hole (804) is formed in the middle of the outer wall of the right end of the expanding block (8), and a locking hole (16) corresponding to the butt joint blind hole (804) is formed in the lower end of the waist line groove (103) on the right side of the violin (1); an outer baffle body (1001) with a slightly smaller diameter is arranged at the position where the right end of the locking bolt (10) is tangent to the outer baffle disc (11), and an annular pull ring (1002) is arranged at the outer end of the locking bolt (10).

2. The novel violin structure capable of conveniently and rapidly identifying finger positions as claimed in claim 1, wherein: the top end face of the first index mark cylindrical block (2) is of an arc-shaped end face structure, and a symmetrical structure is formed between the top end face and the bottom end face of the first index mark cylindrical block (2).

3. A novel violin structure capable of conveniently and rapidly identifying finger positions as claimed in claim 1 or 2, wherein: when the first finger position identification cylindrical block (2) is inserted into the first circular groove structure (10101) and partial semi-circular arc ends of the metal balls (401) in the two groups of limiting clamping mechanisms (4) are respectively contacted with two opening ends of the first limiting circular through hole (201) in the first finger position identification cylindrical block (2), the upward top end face or bottom end face in the first finger position identification cylindrical block (2) is coincided with the top end arc face of the finger plate (101).

4. A novel violin structure capable of conveniently and rapidly identifying finger positions as claimed in claim 1 or 2, wherein: one first hard rubber cylindrical block (202) is embedded between the top end face and the bottom end face of the first index mark cylindrical block (2), and the top end face and the bottom end face of the first hard rubber cylindrical block (202) are respectively superposed with the top end face and the bottom end face of the first index mark cylindrical block (2).

5. The novel violin structure capable of conveniently and rapidly identifying finger positions as claimed in claim 1, wherein: the top end face of the second index mark cylindrical block (3) is of an arc end face structure, and a symmetrical structure is formed between the top end face and the bottom end face of the second index mark cylindrical block (3).

6. The novel violin structure capable of conveniently and rapidly identifying finger positions as claimed in claim 1 or 5, wherein: when the second index mark cylindrical block (3) is inserted into the second circular groove structure (10102) and partial semi-circular arc ends of the metal balls (401) in the two groups of limit clamping mechanisms (4) are respectively contacted with two open ends of the second limit circular through hole (301) in the second index mark cylindrical block (3), the upward top end face or bottom end face in the second index mark cylindrical block (3) coincides with the top end arc face of the fingerplate (101).

7. The novel violin structure capable of conveniently and rapidly identifying finger positions as claimed in claim 1 or 5, wherein: the second hard rubber cylindrical block (302) is embedded between the top end face and the bottom end face of the second index mark cylindrical block (3), and the top end face and the bottom end face of the second hard rubber cylindrical block (302) are respectively overlapped with the top end face and the bottom end face of the second index mark cylindrical block (3).

8. The novel violin structure capable of conveniently and rapidly identifying finger positions as claimed in claim 1, wherein: the right end of the expanding block (8) is tangent to the side edge of the lower end of a waist line groove (103) formed in the middle of the violin (1), and the external contour of the expanding block (8) is consistent with the edge contour of the violin (1).

9. The novel violin structure capable of conveniently and rapidly identifying finger positions as claimed in claim 1, wherein: the air exhaust hole (802) is connected with a shutter (803) close to the outer end in a sliding mode, the shutter (803) is made of sheet alloy consistent with the surface material of the violin (1), and the shutter (803) is opened towards the left end.

10. The novel violin structure convenient and fast to identify the finger position as claimed in claim 1, characterized in that: arc-shaped guide grooves (13) with hinge shafts (801) as centers are formed in the top plane and the bottom plane of the expanding block (8), limiting columns (14) are vertically arranged at positions, opposite to the guide grooves (13), on the upper wall and the lower wall of the slotted hole corresponding to the violin (1) and the expanding block (8), and when the expanding block (8) is matched with the violin (1), the limiting columns (14) are just positioned at the outer ends of the guide grooves (13); two symmetrical spring travel holes (805) are formed in the side wall of the inner end of the expansion block (8), and the spring travel holes (805) are also of an arc surface structure with a hinge shaft (801) as a rotation center; a bent spring C (18) is fixedly connected in the spring stroke hole (805), the inner end of the spring C (18) is fixedly connected inside the violin (1), and when the expansion block (8) is matched with the violin (1), the spring C (18) is just in a compressed state; a locking bolt (10) is arranged in the locking hole (16), an inner stopper (1003) at the left end of the locking bolt (10) is tangent to the inner wall of the locking hole (16), and the locking bolt (10) at the right end of the inner stopper (1003) is a cylinder with a reduced diameter; and a spring B (1004) in a compressed state is sleeved on a locking bolt (10) between the inner blocking body (1003) and the outer blocking disc (11) at the right end of the locking hole (16).