CN114155821A

CN114155821A - Music chord bass mouth organ

Info

Publication number: CN114155821A
Application number: CN202111047548.8A
Authority: CN
Inventors: 陈红梅; 陈滔
Original assignee: Jiangsu Swan Musical Instrument Co ltd
Current assignee: Jiangsu Swan Musical Instrument Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-03-08
Anticipated expiration: 2041-09-08
Also published as: CN114155821B

Abstract

The invention discloses a music chord bass harmonica, which relates to the technical field of harmonica and comprises three bodies which are sequentially connected, wherein the three bodies are respectively a C-tone body, an F-tone body and a G-tone body, the left side of each body is provided with a first mounting groove and a rotating mechanism arranged in the first mounting groove, the outer side of the rotating mechanism is connected with a guide mechanism, the right side of each body is connected with a fitting mechanism which is matched with the guide mechanism to work, and the rotating mechanism comprises a rotating shaft, two rotating discs and two sliding blocks. According to the invention, through the guide mechanism, the fit mechanism and the rotating mechanism, the body and the body can be quickly assembled and disassembled through the guide mechanism and the fit mechanism when being assembled and disassembled, and meanwhile, the device can be adjusted at a certain angle when being used, because the guide mechanism and the rotating mechanism are connected between the body and the body, the total distance between the bodies is shortened after connection, and the device is convenient for a user to use.

Description

Music chord bass mouth organ

Technical Field

The invention relates to the technical field of harmonicas, in particular to a music chord bass harmonica.

Background

The harmonica is a multi-reed instrument which makes metal reeds vibrate and sound by blowing or sucking air through a mouth, and belongs to a blowing instrument of free springs in instrument classification.

The invention discloses a Chinese patent with the publication number of CN113160774A, and discloses a music chord bass mouth organ which comprises three mouth organs of a C tone, a G tone and an F tone, wherein each mouth organ comprises a lattice body, a seat plate covered on two sides of the lattice body and a cover plate covered on the seat plate, the lattice body comprises a plurality of chord groups and bass groups, the chord groups and the bass groups are arranged at intervals in a staggered mode, the lattice body is divided into a plurality of piano holes which are symmetrical up and down through a partition plate, each bass group corresponds to two piano holes on an upper plate and a lower plate, each chord group corresponds to 4 piano holes on the upper plate and the lower plate, each piano hole corresponds to one sound hole, a sound spring is correspondingly arranged on each sound hole, the sound spring is arranged on the inner side of the seat plate, the mouth organ is all blowing, is a bass and a chord are combined into a whole, the tone color is clear and the tone is diversified.

The device still has the following defects in the using process;

1. because the device can play bass and chord on one device simultaneously, the harmonica with three different tones is adopted for connection use, so that the length of the device is three times of that of a normal harmonica in the playing process, the integral length of the harmonica is longer after the harmonica is installed in the using process, larger exercise amount can be brought to the two arms of a user in the playing process, and the holding is inconvenient;

2. the device adopts the bolt for connection in the process of using and connecting, so that a bolt cutter needs to be prepared with a person to disassemble the device in the process of assembling and disassembling every time, which is relatively inconvenient, and due to the adoption of the connection between the bolt and the thread, the connection between the bolt and the thread is easy to have a gap after long-time use, so that the connection is not firm enough; and the gap between the connecting mechanisms is smaller in the use process of the existing connecting and installing mechanism, so that the body is easy to clamp in the clamping process, the disassembly and the installation are inconvenient in the disassembly and the installation process, and the assembly time is prolonged.

Disclosure of Invention

The invention aims to provide a music and bass harmonica, which aims to solve the technical problems that the existing music and bass harmonica is complicated and inconvenient to connect and the whole length of the connected device is longer and inconvenient to use in the prior art.

The invention provides a music chord Bass harmonica which comprises three bodies connected in sequence, wherein the three bodies are a C-tone body, an F-tone body and a G-tone body respectively; the left side of each body is provided with a first mounting groove and a rotating mechanism arranged in the first mounting groove, the outer side of the rotating mechanism is connected with a guide mechanism, the right side of each body is connected with a fitting mechanism which is matched with the guide mechanism, the rotating mechanism comprises a rotating shaft, two rotating discs and two sliding blocks, the groove wall of the first mounting groove is provided with two sliding grooves, the two sliding blocks are respectively arranged in the corresponding sliding grooves and are in sliding fit with the sliding grooves, the two ends of the rotating shaft are respectively rotationally connected with the free ends of the two sliding blocks, the two rotating discs are symmetrically arranged at the two ends of the rotating shaft, the rotating discs are provided with steering positioning grooves, a plurality of steering limiting blocks are equidistantly arranged in the steering positioning grooves, the two sides of one end of each steering limiting block are cambered surfaces, the middle part of the rotating shaft is provided with a rotating block, and the two sides of the rotating block are both provided with steering positioning blocks, one end of the steering positioning block is inserted into one side of the rotating block and is in telescopic fit with the rotating block, a first spring is arranged between the steering positioning block and the rotating block, the steering positioning block and the steering limiting block are in fit with each other, and two sides of one end of the steering positioning block are cambered surfaces.

Further, guiding mechanism includes guide block, two block pieces, a plurality of direction spacing groove, two standing grooves and anticreep groove, the guide block is installed in the outside of turning block, and two standing grooves set up respectively in the both sides of guide block, and two block pieces set up respectively in two standing grooves, and the tank bottom of every standing groove all is equipped with the second spring that one end was contradicted with the block piece, every the both sides that the block piece is located the inside one end of standing groove all are provided with the direction and limit the piece, a plurality of direction spacing grooves have been seted up on the guide block, and direction spacing groove and direction and limit piece sliding fit, the extrusion groove has been seted up to the outer end of block, anticreep groove sets up on the guide block.

Further, the fit mechanism comprises a guide groove and a pressing block, the cross section of the guide groove is T-shaped, the pressing block is installed in the guide groove, one end, located at the notch of the guide groove, of the pressing block is provided with a shifting block, one side of the pressing block is provided with a plurality of connecting springs, all the connecting springs are fixedly connected with the groove wall of the guide groove, two ends of the pressing block are provided with extrusion blocks, the extrusion blocks are matched with the extrusion grooves formed in the clamping block in a one-to-one correspondence mode, the outer side of the shifting block is provided with an anti-falling block, the anti-falling block is matched with the anti-falling grooves formed in the guide block in a working mode, the guide groove is provided with a moving groove, two sides of the pressing block are provided with moving blocks, and the moving blocks are in sliding fit with the moving grooves.

Furthermore, the abutting surface of the extrusion block and the extrusion groove is an arc surface, and the depth of the extrusion groove is smaller than the thickness of the extrusion block.

Furthermore, the end parts of the clamping blocks are inclined planes, and the maximum distance between the clamping blocks in the non-use state is larger than the size of the matching guide groove.

Further, a movable limiting block is fixedly connected to the outer side of the steering limiting block.

Further, the sliding block and the sliding groove have the same cross section.

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

(1) when the music chord bass mouth organ is disassembled and assembled, the guide mechanism and the fit mechanism are connected in a way of working in a matched mode, so that the problem that a bolt knife needs to be carried with a user to disassemble and assemble is effectively avoided in the using process, and due to the fact that the guide mechanism and the fit mechanism are provided with the anti-drop groove and the anti-drop block which work in a matched mode, under the action of the anti-drop block and the anti-drop groove, the connection stability of each body can be guaranteed, and the installation portability of the device is improved;

(2) when the music chord Bass mouth organ provided by the invention is mounted and dismounted, the position of the extrusion block which plays a clamping role in the matching mechanism can be adjusted, and the extrusion block is adjusted by shifting the moving block, so that the effect of adjusting the distance between the extrusion block and the guide groove is achieved, the adjustment of the distance between the extrusion block and the guide groove can avoid the occurrence of a shell clamping phenomenon caused by a small gap between the guide mechanism and the guide groove as well as between the guide mechanism and the extrusion block during dismounting, and the continuity of the mouth organ during dismounting is effectively increased.

(3) In the use process of the music chord Bass harmonica, the guide mechanism is in rotating connection with the rotating mechanism, the rotating mechanism slides with the body, the angle between the body and the body after connection can be adjusted through the guide mechanism, the fit mechanism and the rotating mechanism, and the angle between the three bodies can be adjusted according to the use comfort condition of a user before playing, so that the use of a player is facilitated, and the practicability of the device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic perspective view of the three bodies of the present invention after they are connected;

FIG. 3 is a perspective view of a single body of the present invention;

FIG. 4 is a schematic diagram of the right view structure of the present invention;

FIG. 5 is a left side view of the present invention;

FIG. 6 is a schematic top view of a single body of the present invention;

FIG. 7 is a schematic view of the internal structure of the guide mechanism of the present invention;

FIG. 8 is a schematic view of a connection structure of a rotary plate and a steering positioning block according to the present invention;

fig. 9 is a schematic perspective view of a compact of the present invention.

Reference numerals:

1. a body; 2. a rotating mechanism; 3. a guide mechanism; 4. a clamping block; 5. a fitting mechanism; 6. shifting the moving block; 7. a guide groove; 8. a guide block; 9. a guide limit groove; 10. extruding a groove; 11. a guide limiting block; 12. a drop-proof groove; 13. an anti-drop block; 14. a moving groove; 15. a moving block; 16. extruding the block; 17. a compression block; 18. moving the limiting block; 19. a steering positioning block; 20. a slider; 21. a sliding groove; 22. a rotating shaft; 23. rotating the block; 24. a steering positioning groove; 25. a steering limiting block; 26. and (6) rotating the disc.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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 otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 9, an embodiment of the present invention provides a musical chord bass harmonica, including three bodies 1 connected in sequence, where the three bodies 1 are a C-tone body 1, an F-tone body 1, and a G-tone body 1, respectively; the left side of each body 1 is provided with a first mounting groove and a rotating mechanism 2 arranged in the first mounting groove, the outer side of the rotating mechanism 2 is connected with a guide mechanism 3, the right side of each body 1 is connected with a fitting mechanism 5 matched with the guide mechanism 3, the rotating mechanism 2 comprises a rotating shaft 22, two rotating discs 26 and two sliding blocks 20, the groove wall of the first mounting groove is provided with two sliding grooves 21, the two sliding blocks 20 are respectively arranged in the corresponding sliding grooves 21 and are in sliding fit with each other, the two ends of the rotating shaft 22 are respectively connected with the free ends of the two sliding blocks 20 in a rotating way, the two rotating discs 26 are symmetrically arranged at the two ends of the rotating shaft 22, the rotating discs 26 are provided with steering positioning grooves 24, a plurality of steering limiting blocks 25 are arranged in the steering positioning grooves 24 at equal intervals, and the two sides of one end of each steering limiting block 25 are arc surfaces, a rotating block 23 is arranged in the middle of the rotating shaft 22, steering positioning blocks 19 are arranged on two sides of the rotating block 23, one end of each steering positioning block 19 is inserted into one side of the corresponding rotating block 23 and is in telescopic fit with the corresponding rotating block, a first spring is arranged between each steering positioning block 19 and the corresponding rotating block 23, the steering positioning blocks 19 and the steering limiting blocks 25 work in a matched mode, and two sides of one end of each steering positioning block 19 are cambered surfaces; when the three bodies 1 to be connected are installed, the three bodies 1 to be connected are taken out, the bodies 1 are connected in sequence, when the three bodies are connected, the guide mechanism 3 at one end of one body 1 is installed in the corresponding fitting mechanism 5 on the other body 1, after the connection is completed, the guide mechanism 3 is connected with the rotating mechanism 2, and the rotating mechanism 2 is in sliding connection with the corresponding body 1, so that the position of the rotating mechanism 2 can be adjusted, after the installation is completed, the position of the rotating mechanism 2 is firstly adjusted, the angle between the bodies 1 can be adjusted through the rotating mechanism 2 in the adjusting process because the angle between the rotating mechanism 2 can be adjusted, in the adjusting process, because the rotating mechanism 2 is provided with the steering limiting block 25 and the steering positioning block 19 which work in a matching way, the angle after the adjustment can be fixed under the action of the steering limiting block 25 and the steering positioning block 19, as shown in fig. 8, thereby facilitating the use of the performance.

Specifically, the guide mechanism 3 comprises a guide block 8, two clamping blocks 4, a plurality of guide limiting grooves 9, two placing grooves and a drop-off preventing groove 12, wherein the guide block 8 is installed on the outer side of the rotating block 23, the two placing grooves are respectively arranged on two sides of the guide block 8, the two clamping blocks 4 are respectively arranged in the two placing grooves, a second spring with one end abutting against the clamping block 4 is arranged at the bottom of each placing groove, guide limiting blocks 11 are respectively arranged on two sides of one end, located in the placing grooves, of each clamping block 4, a plurality of guide limiting grooves 9 are formed in the guide block 8, the guide limiting grooves 9 are in sliding fit with the guide limiting blocks 11, extrusion grooves 10 are formed in the outer ends of the clamping blocks 4, and the drop-off preventing groove 12 is formed in the guide block 8; in the using process, the clamping blocks 4 and the guide blocks 8 are connected through the second springs, so that the guide mechanism 3 and the engagement mechanism 5 are connected, the maximum size between the two clamping blocks 4 can be adjusted, the guide mechanism 3 and the engagement mechanism 5 are convenient to connect, the guide limiting blocks 11 are arranged on two sides of the clamping blocks 4, the stability of the movement of the clamping blocks 4 can be guaranteed due to the arrangement of the guide limiting blocks 11, the anti-falling grooves 12 are arranged in the clamping blocks 4, the anti-falling grooves 12 are matched with the anti-falling blocks 13, and the firmness of the body 1 after connection can be improved.

Specifically, the fitting mechanism 5 comprises a guide groove 7 and a pressing block 17, the cross section of the guide groove 7 is T-shaped, the pressing block 17 is installed in the guide groove 7, a poking moving block 6 is installed at one end, located at the notch of the guide groove 7, of the pressing block 17, a plurality of connecting springs are installed at one side of the pressing block 17, all the connecting springs are fixedly connected with the groove wall of the guide groove 7, squeezing blocks 16 are arranged at two ends of the pressing block 17, the squeezing blocks 16 are matched with squeezing grooves 10 formed in the clamping block 4 in a one-to-one correspondence manner, an anti-falling block 13 is installed at the outer side of the poking moving block 6, the anti-falling block 13 is matched with anti-falling grooves 12 formed in the guide block 8, a moving groove 14 is formed in the guide groove 7, moving blocks 15 are arranged at two sides of the pressing block 17, and the moving blocks 15 are in sliding fit with the moving grooves 14; in the process of connecting the guide mechanism 3 with the conjunction mechanism 5, the toggle moving block 6 arranged in the conjunction mechanism 5 can be extruded to displace, in the process of extruding the toggle moving block 6, the toggle moving block 6 is connected with the pressing block 17, so that the moving of the toggle moving block 6 can drive the pressing block 17 to move, the gap between the pressing block 17 and the inner wall of the guide groove can be artificially adjusted, the gap between the pressing block 17 and the inner wall of the guide groove can be adjusted, the guide mechanism 3 is more convenient in guide connection, meanwhile, the pressing block 17 is under the action force of a second spring, the pressing block 17 moves towards the guide mechanism 3 after the action force of the second spring, so that the guide mechanism 3 is more firmly connected, and in the process of clamping movement of the guide mechanism 3, as the extruding block 16 is connected with the pressing block 17, when the extrusion block 16 is located in the extrusion groove 10 formed in the engaging block 4, the extrusion block 16 is inserted into the extrusion groove 10, thereby limiting the position of the guide mechanism 3.

Specifically, the abutting surface of the extrusion block 16 and the extrusion groove 10 is an arc surface, and the depth of the extrusion groove 10 is smaller than the thickness of the extrusion block 16; in the process of using the extrusion block 16 in cooperation with the extrusion groove 10, as the abutting surfaces of the extrusion groove 10 and the extrusion block 16 are arc surfaces, the extrusion block 16 is convenient to be clamped into the extrusion groove 10, and meanwhile, as the depth of the extrusion groove 10 is smaller than the thickness of the extrusion block 16, the extrusion groove 10 can be limited in one position under the action of the extrusion block 16 in the clamping process.

Specifically, the end parts of the clamping blocks 4 are inclined surfaces, and the maximum distance between the clamping blocks 4 is larger than the size of the guide groove 7 in the non-use state; because the tip of block 4 is the inclined plane for block 4 and the guide way 7 cooperation during operation are convenient for get into, and back in block 4 enters into guide way 7, block 4 receives the effect of first spring and can outwards open down, makes block 4 outer end can with the laminating of guide way 7 inner wall, increases its firm in connection nature.

Specifically, the outer side of the steering limiting block 25 is fixedly connected with a movable limiting block 18; because the movable limiting block 18 is arranged in the rotating limiting block, and the movable limiting block 18 is arranged in the rotating block 23, the telescopic range of the steering limiting block 25 can be limited under the action of the movable limiting block 18, and the steering limiting block 25 and the steering positioning block 19 can be conveniently matched for use.

Specifically, the sections of the sliding block 20 and the sliding groove 21 are the same; since the slide block 20 and the slide groove 21 have the same cross section, the slide block 20 can be displaced in the slide groove 21, and thus the rotating mechanism 2 can be displaced.

The specific working method comprises the following steps: before the harmonica is used, firstly, a C-tone body 1, an F-tone body 1 and a G-tone body 1 which need to be connected are taken out, a certain body 1 is selected as a reference connecting body before connection, then the body 1 is connected, in the process of connection, a fitting mechanism 5 of the reference connecting body 1 is connected with a guide mechanism 3 of the body 1 which needs to be connected, before connection, an acting force is firstly exerted on a shifting block 6 in the fitting mechanism 5, as the shifting block 6 is connected with an anti-dropping block 13, the anti-dropping block 13 is driven to move simultaneously when the shifting block 6 is moved, when the anti-dropping block 13 is not positioned in a guide groove 7, the movement is stopped, meanwhile, as the shifting block 6 is fixedly connected with a pressing block 17, when the position of the shifting block 6 is adjusted, the position of the corresponding pressing block 17 can be adjusted, however, the position of the pressing block 17 is adjusted, the distance between the pressing block 17 and the inner wall of the guide groove 7 can be adjusted within a certain range, when the guide block 8 can be installed in the guide groove 7, the guide block 8 is inserted into the guide groove 7, the guide block 8 is convenient to install in the guide groove 7 due to the inclined surface design of the end part of the guide block 8, after the guide block 8 is installed in the guide groove 7, the force applied to the toggle moving block 6 is loosened, the pressing block 17 can extrude the guide block 8 under the action of the first spring, but the position of the pressing block 17 can be movable, the guide block 8 can avoid the phenomenon that the shell is blocked due to the undersize gap between the pressing block 17 and the guide block 8 in the installation process, the anti-falling block 13 connected with the toggle moving block 6 can be clamped into the anti-falling groove 12 formed in the guide block 8 along with the continuous entering of the guide block 8 into the guide groove 7, when the guide block 8 moves to a certain position, the pressing block 16 connected with the pressing block 17 can be clamped into the pressing groove 10 arranged on the clamping block 4, so that a fixing effect on the installation position of the guide mechanism 3 is achieved, in the using process, the whole length of the three bodies 1 is long after the three bodies are connected, the situation of inconvenient use can occur, in this time, two connected bodies 1 are pulled, the rotating mechanism 2 connected with the guide mechanism 3 is movably connected with the bodies 1, so that the rotating mechanism 2 can be displaced outwards, the gap between the bodies 1 and 1 is enlarged, one body 1 of the three bodies 1 is rotated, in the rotating process, the clamping block 4 can be rotated along the rotating shaft 22, the rotating discs 26 are arranged at two ends of the rotating shaft 22, and the rotating discs 26 are matched with the steering positioning block 19 through the steering limiting blocks 25 arranged in the rotating disc 26, can reach and carry out a fixed effect to body 1 position after the rotation to because turn to for telescopic connection between locating piece 19 and the turning block 23, thereby be convenient for carry out the angle to body 1 and adjust, turn to and be provided with on the stopper 25 simultaneously and remove stopper 18 and can guarantee that it can rotate the displacement.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A music chord Bass harmonica comprises three bodies (1) which are connected in sequence, wherein the three bodies (1) are respectively a C-tone body (1), an F-tone body (1) and a G-tone body (1); the method is characterized in that: the left side of each body (1) is provided with a first mounting groove and a rotating mechanism (2) arranged in the first mounting groove, the outer side of the rotating mechanism (2) is connected with a guide mechanism (3), the right side of each body (1) is connected with a fitting mechanism (5) matched with the guide mechanism (3), the rotating mechanism (2) comprises a rotating shaft (22), two rotating discs (26) and two sliding blocks (20), the groove wall of the first mounting groove is provided with two sliding grooves (21), the two sliding blocks (20) are respectively arranged in the corresponding sliding grooves (21) and are in sliding fit with each other, the two ends of the rotating shaft (22) are respectively rotatably connected with the free ends of the two sliding blocks (20), the two rotating discs (26) are symmetrically arranged at the two ends of the rotating shaft (22), and the rotating discs (26) are provided with steering positioning grooves (24), and turn to the equidistance in constant head tank (24) and be provided with a plurality of and turn to stopper (25), turn to stopper (25) one end both sides and be the cambered surface, the middle part of axis of rotation (22) is equipped with turning block (23), the both sides of turning block (23) all are provided with and turn to locating piece (19), the one end that turns to locating piece (19) is pegged graft in one side of turning block (23) and flexible cooperation between the two, and turns to and is equipped with first spring between locating piece (19) and the turning block, turns to locating piece (19) and turns to cooperation work between stopper (25), and the both sides that turn to locating piece (19) one end are the cambered surface.

2. A musical and bass harmonica as claimed in claim 1, wherein: the guide mechanism (3) comprises a guide block (8), two clamping blocks (4), a plurality of guide limiting grooves (9), two placing grooves and an anti-falling groove (12), the guide block (8) is arranged on the outer side of the rotating block (23), the two placing grooves are respectively arranged on two sides of the guide block (8), the two clamping blocks (4) are respectively arranged in the two placing grooves, a second spring with one end abutting against the clamping blocks (4) is arranged at the bottom of each placing groove, guide limiting blocks (11) are respectively arranged on two sides of one end, located in each placing groove, of each clamping block (4), a plurality of guide limiting grooves (9) are formed in the guide block (8), and the guide limiting groove (9) is in sliding fit with the guide limiting block (11), the outer end of the clamping block (4) is provided with an extrusion groove (10), and the anti-falling groove (12) is arranged on the guide block (8).

3. A musical and bass harmonica as claimed in claim 1, wherein: the conjunction mechanism (5) comprises a guide groove (7) and a pressing block (17), the cross section of the guide groove (7) is T-shaped, the pressing block (17) is installed in the guide groove (7), one end, located at the notch of the guide groove (7), of the pressing block (17) is provided with a shifting block (6), one side of the pressing block (17) is provided with a plurality of connecting springs, all the connecting springs are fixedly connected with the groove wall of the guide groove (7), two ends of the pressing block (17) are provided with extrusion blocks (16), the extrusion blocks (16) and extrusion grooves (10) formed in a clamping block (4) are matched one to one, an anti-falling block (13) is installed on the outer side of the shifting block (6), the anti-falling block (13) and an anti-falling groove (12) formed in the guide block (8) are matched to work, a moving groove (14) is formed in the guide groove (7), and moving blocks (15) are arranged on two sides of the pressing block (17), and the moving blocks (15) are in sliding fit with the moving grooves (14).

4. A musical and bass harmonica as claimed in claim 3, wherein: the extrusion groove is characterized in that the abutting surface of the extrusion block (16) and the extrusion groove (10) is an arc surface, and the depth of the extrusion groove (10) is smaller than the thickness of the extrusion block (16).

5. A musical and bass harmonica as claimed in claim 2, wherein: the end parts of the clamping blocks (4) are inclined planes, and the maximum distance between the clamping blocks (4) is larger than the size of the guide groove (7) in the non-use state.

6. A musical and bass harmonica as claimed in claim 2, wherein: the outer side of the steering limiting block (25) is fixedly connected with a movable limiting block (18).

7. A musical and bass harmonica as claimed in claim 1, wherein: the sliding block (20) and the sliding groove (21) have the same section.