CN112114511A - Metronome is used in music teaching - Google Patents

Abstract

The invention belongs to the technical field of metronomes, and particularly relates to a metronome for music teaching, which comprises a shell, wherein a driving motor and a sleeve are fixed in an inner cavity of the shell, a turntable is fixed at an output shaft end of the driving motor, one side of the turntable, which is far away from the driving motor, is eccentrically hinged with a rectangular plate, an opening is arranged at one end, which faces towards the driving motor, of the sleeve, a through hole is arranged at one end, which is far away from the driving motor, of the sleeve, a solenoid valve is fixedly arranged at the through hole, an air outlet pipe is fixed at one end, which is far away from the sleeve, of the solenoid valve, an air outlet hole is arranged at the bottom; the invention reminds the time of the user by blowing the skin of the user, so that the deaf-mute can feel slow beat, thereby expanding the application range of the metronome.

Description

Metronome is used in music teaching

Technical Field

The invention belongs to the technical field of metronomes, and particularly relates to a metronome for music teaching.

Background

Music is an art that reflects the emotion of human real life. Music can be divided into two types of vocal music and instrumental music, and can also be roughly divided into classical music, folk music, original ecological music, modern music and the like. Among the types of art, music is a relatively abstract art, and music has historically been divided into eastern music and western music. The ancient Chinese theory, beginning with Chinese Han nationality music, is based on five-tone scale, i.e., Gong, Shang, jiao, Ju and Yu, and the seven-tone scale is the main theory in the east. The music is pleasing to the eye and brings enjoyment to the hearing of people. The music can improve the aesthetic ability of people, purify the soul of people and establish the ideal of Chonggao. We express our emotions through music, releasing much of our emotions. Metronomes, which are mechanical, electrical, or electronic devices that can produce a steady beat at various speeds, are commonly used in music teaching.

Some technical schemes related to the metronome also appear in the prior art, such as a chinese patent with application number CN201821508093.9, which discloses a metronome for music study, which can monitor the musical instrument sound emitted by a musical instrument practicing person instantly through a sound sensor, so as to perform accurate and effective timing processing on the musical instrument practicing time of the musical instrument practicing person, and when reaching a preset time value, send out a warning sound of 'dripping' in cooperation with a buzzer, so that the musical instrument practicing person can accurately master the duration of the musical instrument practicing time, and play a supporting role on the metronome through a support, so as to meet the use requirement of the metronome, but the metronome can only be applied to children with normal hearing, and cannot hear the sound for deaf-mutes, and the deaf-mutes cannot respond to the sound when learning music, so as to not master the duration of the time, so that music learning is limited.

Therefore, the metronome for music teaching provided by the invention can remind the user of time in a mode of blowing the skin of the user, so that the deaf-mute can feel slow beats, and the application range of the metronome is further expanded.

Disclosure of Invention

In order to make up for the defects of the prior art, the metronome for music teaching provided by the invention reminds the time of a user in a mode of blowing the skin of the user, so that the deaf-mute can feel slow beats, and the application range of the metronome is further expanded.

The technical scheme adopted by the invention for solving the technical problems is as follows: the metronome for music teaching comprises a shell, wherein a driving motor and a sleeve are fixed in an inner cavity of the shell, a turntable is fixed at the output shaft end of the driving motor, one side of the turntable, which is far away from the driving motor, is eccentrically hinged with a rectangular plate, one end of the sleeve, which is towards the driving motor, is provided with an opening, one end of the sleeve, which is far away from the driving motor, is provided with a through hole, a solenoid valve is fixedly arranged at the through hole, one end of the solenoid valve, which is far away from the sleeve, is fixedly provided with an air outlet pipe, the bottom of the shell is provided with an air outlet hole, one end of the air outlet pipe, which is far away from the solenoid valve, is fixed at the air outlet hole, a piston is slidably arranged in the inner cavity of the sleeve, one end of the rectangular plate, which is, the electronic clock comprises a shell, and is characterized in that two stop blocks are arranged at the bottom of the shell, an elastic band is fixed at the bottom of the shell and used for fixing the shell, a control panel is arranged on the shell, a controller is arranged in the shell and electrically connected with the control panel, and the control panel is used for controlling a metronome to work; when the music-based metronome works, the traditional metronome can only be suitable for children with normal hearing, and can not hear sound for deaf-mutes, because the deaf-mutes can not react to the sound when learning music, the length of time can not be mastered, and the music learning is limited, so that the problem is solved; the arm or the foot of the user passes through the elastic band, so that the shell is positioned on the four limbs of the user, the stop block is positioned between the user and the shell, the air outlet hole is smooth, and then the metronome is adjusted through the control panel on the shell; the control panel controls the driving motor to work through the controller, so that the driving motor drives the rotary table to rotate, the rotary table drives the rectangular plate to move, the rectangular plate drives the piston to do piston motion in the sleeve, the volume of the inner cavity of the sleeve is increased when the piston moves towards the direction of the rotary table, so that gas is sucked into the inner cavity of the sleeve through the gas inlet hole, then the rectangular plate drives the piston to move towards the direction far away from the rotary table, so that the volume of the inner cavity of the sleeve is reduced, and the electromagnetic valve is opened when the piston moves to one end far away from the rotary table, so that the gas in the inner cavity of the sleeve is sprayed out; the ejected gas contacts the skin of the user, so that the user can feel the length of the beat; the invention reminds the time of the user by blowing the skin of the user, so that the deaf-mute can feel slow beat, thereby expanding the application range of the metronome; meanwhile, the rotating speed of the driving motor is convenient to adjust, so that the time control of the metronome is more accurate, and the music learning efficiency is improved.

Preferably, a round hole is formed in the top end of the shell, a connecting rod is rotatably mounted at the round hole, the bottom end of the connecting rod is located in the inner cavity of the shell, a first disc is fixed at the bottom end of the connecting rod, the outer ring of the first disc is attached to the outer ring of the rotary disc, a second disc is fixed at the top end of the connecting rod, a first plate is eccentrically hinged to one side of the second disc, which is far away from the first disc, a second plate is hinged to one end of the first plate, which is far away from the second disc, a limiting block is fixed at the top end of the shell, a penetrating limiting hole is formed in the side wall of the limiting block, the second plate is slidably mounted in the limiting hole, two support plates are fixed at the top end of the shell, a swing plate is hinged between the two support plates, a connecting plate is hinged to the side wall of the second disc, one end, which is far away from, the top end of the rectangular box is provided with a rectangular hole, and the swinging plate penetrates through the rectangular hole; when the turntable works, the first disc is arranged, and the first disc is synchronously rotated through friction while the turntable is rotated, so that the connecting rod is rotated, and the connecting rod drives the second disc to rotate, so that the first plate drives the second plate to reciprocate on the limiting block; the second plate drives the connecting plate to move in the reciprocating motion process, so that the swinging plate swings in a reciprocating mode; the driving motor is adjusted through the controller, so that the interference on the driving motor is compensated, the time control precision is ensured, and the time control error is avoided; the invention has the visual reminding function of the traditional metronome and also adds the sense organ reminding function through the swinging of the swinging plate, thereby leading a user to be capable of flexibly using and leading the music teaching to be more convenient and efficient.

Preferably, the shell comprises an upper shell and a lower cover, the upper shell and the lower cover are clamped, and the elastic band is fixed on the lower cover; when the swing plate swings, the shell is still placed on the limbs of a user when the swing plate swings, so that the limb coordination of the user is influenced, and the observation of the user is influenced; the shell is divided into two parts, and the user continuously places the lower cover on the limbs, so that the air outlet pipe continuously sprays air to remind the user; simultaneously, place the epitheca and carry out the visual warning in the place that the user can observe for the user obtains the warning of two kinds of modes, thereby makes the user can utilize this metronome in a flexible way, and then effectual improvement user's learning efficiency.

Preferably, the bottom end of the lower cover is provided with two mounting holes, a round rod is slidably mounted at the mounting holes, a return spring is wound on the surface of the round rod, the top end of the return spring is fixed on the side wall of the round rod, an elastic block is fixed at the bottom end of the return spring, two guide holes are formed in the elastic block, the round rod penetrates through the guide holes, the round rod is slidably connected with the elastic block, the elastic block is used for assisting in reminding, a gas collecting cylinder is arranged at the top of the elastic block, and the gas collecting cylinder is opposite to the gas outlet; when the clothes hanger works, a user wears thicker clothes in winter, so that the reminding effect of the gas sprayed out of the gas outlet pipe on the user is weakened, the user can not even feel the gas spraying, and the learning of the user is influenced; the gas collecting cylinder is arranged, so that the gas collecting cylinder intercepts gas in the process of outward gas injection of the gas outlet pipe, and the gas collecting cylinder drives the elastic block to move downwards quickly under the action of the gas; the fast moving elastic block is contacted with the clothes of the user, so that the user is impacted, the touch reminding to the user is improved, the user can more clearly sense the beat, and the normal use of the invention is ensured; the elastic block returns to the initial position under the action of the reset spring after contacting the user, so that the next pop-up and reminding are facilitated; when the elastic block is not needed, the round rod is pulled out from the mounting hole, so that the air outlet pipe can normally spray air, and the metronome can be flexibly used.

Preferably, a rotating shaft is fixedly installed at the bottom end of the lower cover, a clamping block is fixed at the bottom end of the rotating shaft, a groove is formed in one end, facing the elastic block, of the clamping block, a shifting block is hinged in the groove, a limiting rod is fixed in the groove and made of a magnetic material, the shifting block is made of an iron material, the distance between the limiting block and the elastic block is smaller than the distance between the rotating center of the shifting block and the elastic block, an elastic plate is fixed on one side, close to the clamping block, of the elastic block, and the elastic plate is used for stabilizing the elastic block; when the automatic ejection device works, the elastic block has certain vibration under the action of the reset spring after being reset, and the ejection accuracy of the elastic block can be influenced; the shifting block is arranged, the elastic plate is driven to move upwards in the process that the elastic block returns to the initial position, the elastic plate is in contact with the shifting block in the moving process, the shifting block is limited by the limiting rod to rotate upwards, so that the elastic plate cannot drive the shifting block to rotate upwards, the elastic plate deforms in the process of passing through the shifting block, and the moving speed of the elastic block is rapidly reduced; the moving speed of the elastic block after the elastic plate passes through the shifting block is close to zero, so that the elastic block just returns to the initial position, the shifting block can normally rotate downwards, the elastic block drives the shifting block to rotate in the process of outwards ejecting, the resistance of the elastic plate is smaller, the elastic block can normally move, and the reminding effect of the elastic block is guaranteed.

Preferably, a magnet is fixed in the mounting hole, a magnet is fixed at the top end of the round rod, and the magnetism of the magnet is opposite to that of the magnet; when the metronome works, the elastic block pulls the return spring in the downward moving process, so that the round rod has the tendency of moving downwards, and the round rod can fall off from the mounting hole in the long-time use process, thereby influencing the normal use of the metronome; the magnet is arranged in the mounting hole, so that the magnet at the top end of the round rod is attracted with the magnet, the round rod is not easy to separate from the lower cover, the elastic block cannot easily fall off in the using process, the learning process of a user is not easily interrupted, and the learning efficiency is further ensured; the adsorption of the magnets and the magnetic blocks enables the round rod to be easily detached, so that the round rod has the characteristic of easy assembly and disassembly, and the installation time is saved.

The invention has the following beneficial effects:

1. according to the metronome for music teaching, provided by the invention, time reminding is carried out on a user in a mode of blowing the skin of the user, so that the deaf-mute can feel slow beats, and the application range of the metronome is further expanded.

2. According to the metronome for music teaching, the limbs of the user are impacted through the elastic blocks, so that the user can still receive the perception prompt of the metronome when wearing thick clothes, and the using effect of the metronome is improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a three-dimensional view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is an enlarged view of a portion of FIG. 2 at B;

FIG. 5 is a schematic view showing the positional relationship between the magnets and the magnetic blocks;

FIG. 6 is a schematic view showing the positional relationship of the connecting plate and the swing plate;

in the figure: 1. a housing; 2. a drive motor; 3. a sleeve; 4. a turntable; 5. a rectangular plate; 6. an electromagnetic valve; 7. an air outlet pipe; 8. a stopper; 9. elastic bands; 10. a connecting rod; 11. a first dial; 12. a second disk; 13. a first board; 14. a second plate; 15. a limiting block; 16. a support plate; 17. a connecting plate; 18. a rectangular box; 19. an upper shell; 20. a lower cover; 21. mounting holes; 22. a round bar; 23. a return spring; 24. a spring block; 25. a gas collecting cylinder; 26. a rotating shaft; 27. a clamping block; 28. a groove; 29. shifting blocks; 30. a limiting rod; 31. an elastic plate; 32. a magnet; 33. a magnetic block; 34. a swing plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the metronome for music teaching according to the present invention includes a housing 1, a driving motor 2 and a sleeve 3 are fixed in an inner cavity of the housing 1, a rotary plate 4 is fixed at an output shaft end of the driving motor 2, a rectangular plate 5 is eccentrically hinged at one side of the rotary plate 4 away from the driving motor 2, an opening is provided at one end of the sleeve 3 facing the driving motor 2, a through hole is provided at one end of the sleeve 3 away from the driving motor 2, an electromagnetic valve 6 is fixedly installed at the through hole, an air outlet pipe 7 is fixed at one end of the electromagnetic valve 6 away from the sleeve 3, an air outlet hole is provided at a bottom of the housing 1, one end of the air outlet pipe 7 away from the electromagnetic valve 6 is fixed at the air outlet hole, a piston is slidably installed in the inner cavity of the sleeve 3, one end of the rectangular plate 5 away from, the side wall of the sleeve 3 is provided with an air inlet, the air inlet is provided with a one-way valve, the one-way valve is used for one-way air inlet of an inner cavity of the sleeve 3, the bottom of the shell 1 is provided with two stop blocks 8, the bottom of the shell 1 is fixed with an elastic band 9, the elastic band 9 is used for fixing the shell 1, the shell 1 is provided with a control panel, the shell 1 is internally provided with a controller, the controller is electrically connected with the control panel, and the control panel is used for controlling the metronome to work; when the music-based metronome works, the traditional metronome can only be suitable for children with normal hearing, and can not hear sound for deaf-mutes, because the deaf-mutes can not react to the sound when learning music, the length of time can not be mastered, and the music learning is limited, so that the problem is solved; the arm or foot of a user passes through the elastic band 9, so that the shell 1 is positioned on the four limbs of the user, the stop block 8 is positioned between the user and the shell 1, the air outlet is unblocked, and then the metronome is adjusted through a control panel on the shell 1; the control panel controls the driving motor 2 to work through the controller, so that the driving motor 2 drives the rotary table 4 to rotate, the rotary table 4 drives the rectangular plate 5 to move, the rectangular plate 5 drives the piston to do piston motion in the sleeve 3, the volume of the inner cavity of the sleeve 3 is increased when the piston moves towards the direction of the rotary table 4, so that gas is sucked into the inner cavity of the sleeve 3 through the gas inlet hole, then the rectangular plate 5 drives the piston to move towards the direction far away from the rotary table 4, the volume of the inner cavity of the sleeve 3 is reduced, and the electromagnetic valve 6 is opened when the piston moves to the end far away from the rotary table 4, so that the gas in the inner cavity of the sleeve 3 is sprayed out of the gas outlet; the ejected gas contacts the skin of the user, so that the user can feel the length of the beat; the invention reminds the time of the user by blowing the skin of the user, so that the deaf-mute can feel slow beat, thereby expanding the application range of the metronome; meanwhile, the rotating speed of the driving motor 2 is convenient to adjust, so that the time control of the metronome is more accurate, and the efficiency of music learning is improved.

As a specific embodiment of the invention, a circular hole is arranged at the top end of the shell 1, a connecting rod 10 is rotatably arranged at the circular hole, the bottom end of the connecting rod 10 is positioned in an inner cavity of the shell 1, a first disc 11 is fixed at the bottom end of the connecting rod 10, the outer ring of the first disc 11 is attached to the outer ring of the rotating disc 4, a second disc 12 is fixed at the top end of the connecting rod 10, a first plate 13 is eccentrically hinged at one side of the second disc 12 far away from the first disc 11, a second plate 14 is hinged at one end of the first plate 13 far away from the second disc 12, a limiting block 15 is fixed at the top end of the shell 1, a through limiting hole is arranged on the side wall of the limiting block 15, the second plate 14 is slidably arranged in the limiting hole, two supporting plates 16 are fixed at the top end of the shell 1, a swinging plate 34 is hinged between the two supporting plates 16, and a connecting plate 17 is, one end of the connecting plate 17, which is far away from the swinging plate 34, is hinged to one end of the second plate 14, which is close to the swinging plate 34, a rectangular box 18 is fixed at the top end of the shell 1, a rectangular hole is formed at the top end of the rectangular box 18, and the swinging plate 34 penetrates through the rectangular hole; when the turntable is in work, the first disc 11 is arranged, the first disc 11 synchronously rotates through friction force while the turntable 4 rotates, so that the connecting rod 10 rotates, the connecting rod 10 drives the second disc 12 to rotate, and the first plate 13 drives the second plate 14 to reciprocate on the limiting block 15; the second plate 14 drives the connecting plate 17 to move in the process of reciprocating motion, so that the swinging plate 34 generates reciprocating swinging; the driving motor 2 is adjusted through the controller, so that the interference on the driving motor 2 is compensated, the precision of time control is ensured, and the occurrence of errors in the time control is avoided; through the swinging of the swinging plate 34, the music clock has the visual reminding function of the traditional metronome and also has the sense reminding function, so that a user can flexibly use the music clock, and the music teaching is more convenient and efficient.

As a specific embodiment of the present invention, the housing 1 includes an upper shell 19 and a lower cover 20, the upper shell 19 and the lower cover 20 are clamped, and the elastic band 9 is fixed on the lower cover 20; in operation, if the swing plate 34 swings, the shell 1 is still placed on the limbs of the user, which may affect the coordination of the limbs of the user and the observation of the user; by dividing the shell 1 into two parts, the user continuously places the lower cover 20 on the limbs, so that the air outlet pipe 7 continuously sprays air to remind the user; meanwhile, the upper shell 19 is placed at a place where a user can observe for visual reminding, so that the user can be reminded in two modes, the user can flexibly use the metronome, and the learning efficiency of the user is effectively improved.

As a specific embodiment of the present invention, two mounting holes 21 are provided at the bottom end of the lower cover 20, a round bar 22 is slidably mounted at the mounting holes 21, a return spring 23 is wound on the surface of the round bar 22, the top end of the return spring 23 is fixed on the side wall of the round bar 22, an elastic block 24 is fixed at the bottom end of the return spring 23, two guide holes are provided on the elastic block 24, the round bar 22 passes through the guide holes, the round bar 22 is slidably connected with the elastic block 24, the elastic block 24 is used for assisting in reminding, a gas collecting cylinder 25 is provided at the top of the elastic block 24, and the gas collecting cylinder 25 faces the gas outlet; when the clothes hanger works, a user wears thicker clothes in winter, so that the reminding effect of the gas sprayed out of the gas outlet pipe 7 on the user is weakened, the user can not even feel the gas spraying, and the learning of the user is influenced; by arranging the gas collecting cylinder 25, the gas collecting cylinder 25 intercepts gas in the process of injecting gas from the gas outlet pipe 7, so that the gas collecting cylinder 25 drives the elastic block 24 to move downwards quickly under the action of the gas; the fast moving elastic block 24 contacts with the clothes of the user, so that the user is impacted, the touch reminding to the user is improved, the user can more clearly sense the beat, and the normal use of the invention is ensured; the elastic block 24 returns to the initial position under the action of the return spring 23 after contacting the user, so that the next ejection and reminding are facilitated; when the elastic block 24 is not needed, the round rod 22 is pulled out from the mounting hole 21, so that the air outlet pipe 7 can normally spray air, and the metronome can be flexibly used.

As a specific embodiment of the present invention, a rotating shaft 26 is fixedly installed at the bottom end of the lower cover 20, a clamping block 27 is fixed at the bottom end of the rotating shaft 26, a groove 28 is formed at one end of the clamping block 27 facing the elastic block 24, a shifting block 29 is hinged in the groove 28, a limiting rod 30 is fixed in the groove 28, the limiting rod 30 is made of a magnetic material, the shifting block 29 is made of an iron material, the distance between the limiting block 15 and the elastic block 24 is smaller than the distance between the rotation center of the shifting block 29 and the elastic block 24, an elastic plate 31 is fixed at one side of the elastic block 24 close to the clamping block 27, and the elastic plate 31 is used for stabilizing the elastic block 24; during operation, the elastic block 24 has certain vibration under the action of the return spring 23 after being reset, and the ejection accuracy of the elastic block 24 can be influenced; by arranging the shifting block 29, the elastic plate 31 is driven to move upwards in the process that the elastic block 24 returns to the initial position, the elastic plate 31 is in contact with the shifting block 29 in the moving process, the shifting block 29 is limited by the limiting rod 30 to rotate upwards, so that the elastic plate 31 cannot drive the shifting block 29 to rotate upwards, the elastic plate 31 deforms in the process of passing through the shifting block 29, and the moving speed of the elastic block 24 is rapidly reduced; the moving speed of the elastic plate 31 passing through the shifting block 29 is close to zero, so that the elastic block 24 just returns to the initial position, the shifting block 29 can normally rotate downwards, the elastic block 24 drives the shifting block 29 to rotate in the process of outwards ejecting, the resistance of the elastic plate 31 is small, the elastic block 24 can normally move, and the reminding effect of the elastic block 24 is guaranteed.

In one embodiment of the present invention, a magnet 32 is fixed in the mounting hole 21, a magnet 33 is fixed at the top end of the round rod 22, and the magnet 32 and the magnet 33 have opposite magnetism; when the metronome is in operation, the elastic block 24 pulls the return spring 23 in the downward movement process, so that the round rod 22 has the tendency of moving downward, and the round rod 22 can fall off from the mounting hole 21 in the long-time use process, thereby influencing the normal use of the metronome; the magnet 32 is arranged in the mounting hole 21, so that the magnet 33 at the top end of the round rod 22 is attracted with the magnet 32, the round rod 22 is not easy to separate from the lower cover 20, the elastic block 24 cannot easily fall off in the using process, the learning process of a user is not easily interrupted, and the learning efficiency is further ensured; the magnets 32 and the magnetic blocks 33 are adsorbed to enable the round rod 22 to be easily detached, so that the round rod has the characteristic of being easy to assemble and disassemble, and the installation time is saved.

The present invention solves this problem; the arm or foot of a user passes through the elastic band 9, so that the shell 1 is positioned on the four limbs of the user, the stop block 8 is positioned between the user and the shell 1, the air outlet is unblocked, and then the metronome is adjusted through a control panel on the shell 1; the control panel controls the driving motor 2 to work through the controller, so that the driving motor 2 drives the rotary table 4 to rotate, the rotary table 4 drives the rectangular plate 5 to move, the rectangular plate 5 drives the piston to do piston motion in the sleeve 3, the volume of the inner cavity of the sleeve 3 is increased when the piston moves towards the direction of the rotary table 4, so that gas is sucked into the inner cavity of the sleeve 3 through the gas inlet hole, then the rectangular plate 5 drives the piston to move towards the direction far away from the rotary table 4, the volume of the inner cavity of the sleeve 3 is reduced, and the electromagnetic valve 6 is opened when the piston moves to the end far away from the rotary table 4, so that the gas in the inner cavity of the sleeve 3 is sprayed out of the gas outlet; the ejected gas contacts the skin of the user, so that the user can feel the length of the beat; the invention reminds the time of the user by blowing the skin of the user, so that the deaf-mute can feel slow beat, thereby expanding the application range of the metronome; meanwhile, the rotating speed of the driving motor 2 is convenient to adjust, so that the time control of the metronome is more accurate, and the efficiency of music learning is improved.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a metronome is used in music teaching which characterized in that: comprises a shell (1), a driving motor (2) and a sleeve (3) are fixed in an inner cavity of the shell (1), a turntable (4) is fixed at an output shaft end of the driving motor (2), a rectangular plate (5) is eccentrically hinged to one side, away from the driving motor (2), of the turntable (4), an opening is formed in the sleeve (3) towards one end of the driving motor (2), a through hole is formed in one end, away from the driving motor (2), of the sleeve (3), a solenoid valve (6) is fixedly installed at the through hole, an air outlet pipe (7) is fixed at one end, away from the sleeve (3), of the solenoid valve (6), an air outlet hole is formed in the bottom of the shell (1), one end, away from the solenoid valve (6), of the air outlet pipe (7) is fixed at the air outlet hole, a piston is slidably installed in the inner cavity of the sleeve (, driving motor (2) are used for driving the piston motion, sleeve (3) lateral wall is equipped with the inlet port, and inlet port department is equipped with the check valve, and the check valve is used for the one-way of sleeve (3) inner chamber to admit air, casing (1) bottom is equipped with two dog (8), casing (1) bottom is fixed with elastic cord (9), elastic cord (9) are used for the fixed of casing (1), be equipped with control panel on casing (1), be equipped with the controller in casing (1), controller and control panel electric connection, control panel are used for controlling metronome work.

2. The metronome for music teaching according to claim 1, wherein: the top end of the shell (1) is provided with a round hole, the round hole is rotatably provided with a connecting rod (10), the bottom end of the connecting rod (10) is positioned in the inner cavity of the shell (1), the bottom end of the connecting rod (10) is fixedly provided with a first disc (11), the outer ring of the first disc (11) is attached to the outer ring of the rotary disc (4), the top end of the connecting rod (10) is fixedly provided with a second disc (12), one side, away from the first disc (11), of the second disc (12) is eccentrically hinged with a first plate (13), one end, away from the second disc (12), of the first plate (13) is hinged with a second plate (14), the top end of the shell (1) is fixedly provided with a limiting block (15), the side wall of the limiting block (15) is provided with a penetrating limiting hole, the second plate (14) is slidably arranged in the limiting hole, the top end of the shell (1) is fixedly provided with two supporting plates (16), and a, swing board (34) are articulated on the lateral wall towards No. two dishes (12) have connecting plate (17), the articulated one end of installing in No. two boards (14) that is close to swing board (34) of swing board (34) is kept away from in connecting plate (17), casing (1) top is fixed with rectangle box (18), rectangle box (18) top is equipped with the rectangular hole, swing board (34) pass the rectangular hole.

3. The metronome for music teaching according to claim 2, wherein: casing (1) includes epitheca (19) and lower cover (20), be the joint between epitheca (19) and lower cover (20), elastic cord (9) are fixed on lower cover (20).

4. A metronome for music teaching according to claim 3, wherein: the utility model discloses a gas collecting device, including lower cover (20), mounting hole (21) department slidable mounting have round bar (22), round bar (22) surface winding is provided with reset spring (23), the top of reset spring (23) is fixed on round bar (22) lateral wall, the bottom mounting of reset spring (23) has bullet piece (24), be equipped with two guiding holes on bullet piece (24), round bar (22) pass the guiding hole, round bar (22) and bullet piece (24) sliding connection, bullet piece (24) are used for supplementary warning, bullet piece (24) top is equipped with gas collecting cylinder (25), gas collecting cylinder (25) just to the venthole.

5. The metronome for music teaching according to claim 4, wherein: lower cover (20) bottom fixed mounting has pivot (26), the bottom mounting of pivot (26) has fixture block (27), fixture block (27) are equipped with recess (28) towards the one end of bullet piece (24), and articulated in recess (28) have shifting block (29), and recess (28) internal fixation has limiting rod (30), limiting rod (30) adopt magnetic material to make, shifting block (29) adopt the iron material to make, the distance is less than the distance between the center of rotation of shifting block (29) and bullet piece (24) between limiting block (15) and bullet piece (24), one side that bullet piece (24) are close to fixture block (27) is fixed with elastic plate (31), elastic plate (31) are used for the stability of bullet piece (24).

6. The metronome for music teaching according to claim 5, wherein: a magnet (32) is fixed in the mounting hole (21), a magnetic block (33) is fixed at the top end of the round rod (22), and the magnetism of the magnet (32) is opposite to that of the magnetic block (33).

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