Portable loudspeaker box for vocal singing teaching

Abstract

The invention relates to the technical field of loudspeaker boxes, and provides a portable loudspeaker box for vocal music singing teaching, which comprises a shell, a connecting cover is mounted on the shell, a through hole is formed in the connecting cover, a fixing block is fixedly arranged at the bottom of the shell, a supporting assembly is mounted at the bottom of the fixing block, and the supporting assembly is connected with the connecting cover. A rubber connecting shaft is rotatably installed below the supporting assembly, a suction cup is fixedly arranged at the bottom of the rubber connecting shaft, an inner groove is formed in the rubber connecting shaft, a communicating groove is formed between the rubber connecting shaft and the suction cup, an exhaust hole is formed in the side face of the fixing block, and a second groove is formed in the middle of the fixing block. By means of the technical scheme, the problems that an existing loudspeaker box cannot quickly clean dust in the loudspeaker box through a supporting structure, the connecting cover cannot be cleaned through a sealing adjusting structure, the existing loudspeaker box is inconvenient to carry, and the sound amplification direction is inconvenient to adjust are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sound boxes, and in particular to a portable external sound box for vocal music singing teaching. Background Art

[0002] In vocal singing teaching, external speakers are important auxiliary equipment that can effectively improve learning effects and singing performance. During vocal training, teachers often need to use audio equipment to clearly convey accompaniment music, demonstration singing or voice guidance to students. The use of external speakers not only helps students better understand pitch, rhythm, timbre and vocal techniques, but also provides students with a practice experience that is closer to the real singing environment. Existing external speakers still have some shortcomings.

[0003] The invention patent with publication number CN109688509B discloses a Bluetooth speaker, which includes a first shell and a second shell. A first soft layer is provided on one side of the first shell relative to the second shell, and a second soft layer is provided on one side of the second shell relative to the first shell. A through hole is provided in the middle of the first soft layer and the second soft layer. An elastic member is installed in the two adjacent through holes. One end of the elastic member passes through the through hole to connect and fix with the first shell, and the other end of the elastic member passes through the through hole to connect and fix with the second shell. A clamping cavity is formed between the first shell and the second shell. One or more air inlet and outlet holes are provided on the surfaces of the first shell and the second shell that are in contact with the elastic member. The Bluetooth speaker separates the speaker from the motherboard, solves the problem of heat transfer, and reduces the vibration effect of the speaker on the motherboard. At the same time, the split shell can be used to achieve clamping and fixing at any position, which is more convenient and has very good heat dissipation performance and anti-fall ability. Although the above device has an anti-fall function, when in use, the supporting structure cannot be used to quickly clean the internal dust of the speaker, and the connection cover cannot be cleaned through the sealing adjustment structure. In addition, the existing external speakers are not easy to carry and adjust the sound amplification direction. Summary of the invention

[0004] The present invention provides an external speaker box for vocal singing teaching that is easy to carry, which solves the problems that the existing external speaker box cannot use the supporting structure to quickly clean the internal dust of the speaker box, cannot clean the connection cover through the sealing adjustment structure, and the existing external speaker box is not easy to carry and adjust the sound amplification direction.

[0005] The technical solution of the present invention is as follows:

[0006] The swivel head is provided with a plurality of springs, and a plurality of springs are provided on the bottom of the swivel head, and a plurality of springs are provided on the bottom of the swivel head to respectively adjust the size of the springs and the size of the swivel head so that the swivel head can move freely.

[0007] As a preferred solution of the present invention, the outer circumferential surface of the shell is provided with anti-skid ridges, the anti-skid ridges are evenly distributed along the circumference of the shell, and the material of the anti-skid ridges is rubber.

[0008] As a preferred solution of the present invention, the through holes are evenly distributed on the connection cover, the connection cover is in the shape of a spherical crown, and the housing, the connection cover and the fixing block are fixedly connected to form an integral structure.

[0009] As a preferred solution of the present invention, the support assembly includes a pressure block fixedly connected to the fixed block, a support block is arranged at the bottom of the fixed block, a first groove is opened at the bottom of the support block, and the first groove is in friction contact with the rubber connecting shaft.

[0010] As a preferred solution of the present invention, the pressing blocks are made of rubber and are evenly distributed along the circumference of the fixed block, wherein half of the pressing blocks fit against the supporting blocks and the other half of the pressing blocks abut against the supporting blocks.

[0011] As a preferred solution of the present invention, a first rubber soft magnetic patch is fixedly connected to the bottom of the suction cup, and a second rubber soft magnetic patch is fixedly connected to the top of the shell. The bottom surface of the first rubber soft magnetic patch and the bottom surface of the suction cup are in the same plane, and the top surface of the second rubber soft magnetic patch and the top surface of the shell are in the same plane.

[0012] As a preferred solution of the present invention, the second rubber soft magnetic patch is in the shape of a ring, the first rubber soft magnetic patch is evenly distributed along the circumference of the suction cup, and the position of the first rubber soft magnetic patch on the suction cup corresponds one-to-one to the position of the second rubber soft magnetic patch.

[0013] As a preferred solution of the present invention, the exhaust holes are connected to the interior of the shell through the second groove, the number of the exhaust holes on the fixed block is the same as the number of the openings on the rotating ring, and the rotating ring is made of rubber.

[0014] As a preferred solution of the present invention, a fixing plate is fixedly connected to the swivel, an adjusting stud is rotatably connected to the fixing plate, an outer side of the adjusting stud is threadedly connected to an outer bushing, the outer bushing and the first leaf spring are fixedly connected, the middle position of the first leaf spring is suitable for gradually moving away from or approaching the fixing plate when the adjusting stud rotates, the first leaf spring and the second leaf spring are abutted against each other, and the first leaf spring and the second leaf spring are alternately distributed on the swivel.

[0015] As a preferred solution of the present invention, a mounting groove is provided on the second leaf spring, a mounting block is slidably installed in the mounting groove, the mounting block is fixedly connected to the filter pad, and the filter pad is made of sponge material.

[0016] The working principle and beneficial effects of the present invention are:

[0017] 1. The function of using the supporting structure to clean the connecting cover of the device is realized by providing a rubber connecting shaft, a connecting cover and a through hole. The rubber connecting shaft can be detached from the second groove after being squeezed. By fitting the suction cup to the top surface of the shell and keeping it sealed, after squeezing the connecting shaft, the gas in the connecting shaft can be discharged through the inner groove and the connecting groove, thereby squeezing the gas into the inside of the through hole. When the opening on the switching component and the exhaust hole on the fixed block are misaligned with each other, the bottom of the device is kept sealed by the swivel, and the top of the device is kept sealed by the suction cup and the rubber connecting shaft. At this time, when the rubber connecting shaft is squeezed, the air pressure inside the shell increases. As the rubber connecting shaft recovers its deformation, the air pressure inside the shell will decrease again. By reciprocatingly squeezing the rubber connecting shaft, the air pressure in the shell can be intermittently increased or decreased. When the gas passes through the connecting cover with evenly distributed through holes, the blockage in the through holes can be quickly cleaned, which solves the problem that the existing speaker cannot clean the connecting cover through the sealing adjustment structure. The device has the advantage of being more convenient to use.

[0018] 2. Through the support component and the switching component on the device, when the opening on the switching component corresponds to the position of the exhaust hole, when the suction cup is fitted with the top of the shell, the dust in the device is discharged from the exhaust hole by squeezing the rubber connecting shaft and using air pressure. Since the position of the exhaust hole corresponds to the position of the filter pad on the second leaf spring, the blown dust can be collected by the filter pad to avoid affecting the working environment, thereby enhancing the practicability of the device and solving the problem that the existing speakers cannot use the supporting structure to quickly clean the internal dust of the speakers.

[0019] 3. By providing the rubber connecting shaft, the suction cup, the first leaf spring and the second leaf spring, the first leaf spring and the second leaf spring can be used as a carrying handle. When the adjusting stud is screwed in or out, the outer bushing will be driven to move toward the side close to or away from the rotating ring. The outer bushing can drive both sides of the first leaf spring to extend outward, thereby abutting against the second leaf spring, so that the bending degree of the second leaf spring changes, so as to adjust the bending degree of the second leaf spring to meet different needs, making the device easier to carry. Since the rubber connecting shaft is in friction contact with the first groove, the outer shell can remain fixed after adjusting its own angle, solving the problem that the existing external speakers are inconvenient to carry and adjust the amplification direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] Figure 1 It is a schematic diagram of the overall structure of an external speaker box for vocal music singing teaching that is easy to carry in the present invention;

[0022] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at center A;

[0023] Figure 3 yes Figure 1 A magnified schematic diagram of the structure at B in the middle;

[0024] Figure 4 This is a schematic diagram of the connection structure between the support block and the rubber connection shaft of the present invention;

[0025] Figure 5 yes Figure 4 A magnified schematic diagram of the structure at C in the middle;

[0026] Figure 6 It is a schematic diagram of the split structure of the fixed block and the switching component of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure between the rubber connecting shaft and the suction cup of the present invention;

[0028] Figure 8 It is a schematic diagram of the top view of the structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the abutment structure of the first leaf spring and the second leaf spring of the present invention;

[0030] Fig.10 It is a schematic diagram of the internal structure of the housing of the present invention;

[0031] Fig.11 yes Fig.10 A magnified schematic diagram of the structure at D in the middle;

[0032] Fig.12It is a schematic diagram of the connection structure between the housing and the fixing block of the present invention.

[0033] Figure markings: 1. outer shell; 2. anti-slip ridges; 3. connecting cover; 4. through hole; 5. supporting assembly; 501. supporting block; 502. pressing block; 503. first groove; 6. rubber connecting shaft; 7. suction cup; 8. inner groove; 9. connecting groove; 10. first rubber soft magnetic patch; 11. second rubber soft magnetic patch; 12. fixing block; 13. exhaust hole; 14. second groove; 15. switching assembly; 1501. swivel; 1502. opening; 1503. movable groove; 1504. fixing plate; 1505. first leaf spring; 1506. outer bushing; 1507. adjusting stud; 16. second leaf spring; 17. mounting groove; 18. mounting block; 19. filter pad; 20. speaker body. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] like Figure 1-Figure 12As shown, the present embodiment proposes a portable external speaker for vocal singing teaching, comprising a shell 1, a connecting cover 3 is installed on the shell 1, a through hole 4 is opened on the connecting cover 3, a fixing block 12 is fixedly arranged at the bottom of the shell 1, a supporting assembly 5 is installed at the bottom of the fixing block 12, a rubber connecting shaft 6 is rotatably installed below the supporting assembly 5, a suction cup 7 is fixedly arranged at the bottom of the rubber connecting shaft 6, an inner groove 8 is opened in the rubber connecting shaft 6, a connecting groove 9 is set between the rubber connecting shaft 6 and the suction cup 7, and a side opening of the fixing block 12 is provided. An exhaust hole 13 is provided, a second groove 14 is provided in the middle of the fixed block 12, a switching assembly 15 is provided on the outer side of the fixed block 12, the switching assembly 15 comprises a rotating ring 1501 with a rotating rod installed on the outer side of the fixed block 12, openings 1502 are provided on both sides of the rotating ring 1501, a movable groove 1503 is provided on the outer peripheral surface of the rotating ring 1501, a first leaf spring 1505 and a second leaf spring 16 are slidably installed in the movable groove 1503, a filter pad 19 is installed on the second leaf spring 16, and a speaker body 20 is provided on the fixed block 12. The support assembly 5 can connect the fixed block 12 and the rubber connecting shaft 6, and the support assembly 5 can drive the outer shell 1 and the fixed block 12 to rotate through the rubber connecting shaft 6, thereby changing the angle of the entire device, so that the orientation of the connecting cover 3 changes, so as to adjust the direction of the sound amplification later, and the rubber connecting shaft 6 can be removed from the bottom of the support assembly 5. After the suction cup 7 is docked with the top of the outer shell 1, by keeping the switching assembly 15 in Figure 2 In this state, the opening 1502 and the exhaust hole 13 are interlaced with each other, and the bottom of the housing 1 and the fixing block 12 remain closed. When the rubber connecting shaft 6 is squeezed, the gas will intermittently pass through the through hole 4, thereby completing the cleaning of the through hole 4. After the rotating ring 1501 on the switching component 15 rotates 90°, the position of the exhaust hole 13 coincides with the opening 1502. At this time, when the rubber connecting shaft 6 is squeezed, the gas will flow to the filter pad 19 on the second leaf spring 16 through the exhaust hole 13 and the opening 1502, realizing the cleaning function inside the device. The filter pad 19 can be removed and replaced later, and the second leaf spring 16 can be used as a handle when carrying, making the device easier to carry.

[0037] Example 2

[0038] like Figure 1-Figure 12 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes a portable external speaker for vocal singing teaching.

[0039] In this embodiment, the outer circumferential surface of the shell 1 is provided with anti-skid ridges 2, and the anti-skid ridges 2 are evenly distributed along the circumference of the shell 1. The material of the anti-skid ridges 2 is rubber material. The rubber anti-skid ridges 2 make the shell 1 easier to hold, which can not only realize the fall protection function, but also realize the anti-skid function.

[0040] In this embodiment, the through holes 4 are evenly distributed on the connecting cover 3, and the shape of the connecting cover 3 is a spherical crown. The connecting cover 3 with a spherical crown structure and the through holes 4 evenly distributed on its surface can ensure the sound amplification effect. The outer shell 1, the connecting cover 3 and the fixed block 12 are fixedly connected as an integral structure to ensure the overall stability of the device.

[0041] In this embodiment, the support assembly 5 includes a pressing block 502 fixedly connected to the fixed block 12, a supporting block 501 is arranged at the bottom of the fixed block 12, a first groove 503 is opened at the bottom of the supporting block 501, the pressing block 502 can press the supporting block 501 so that the supporting block 501 is stably docked with the fixed block 12, and the first groove 503 is in friction contact with the rubber connecting shaft 6. After the position of the rubber connecting shaft 6 in the first groove 503 changes, the device as a whole can be kept fixed to facilitate the subsequent adjustment of the sound amplification angle of the device.

[0042] In this embodiment, the material of the pressing blocks 502 is rubber, and the pressing blocks 502 are evenly distributed along the circumference of the fixed block 12, wherein half of the pressing blocks 502 are in contact with the support block 501, and the other half of the pressing blocks 502 are in contact with the support block 501. The rubber pressing blocks 502 can press the support block 501, thereby keeping the support block 501 and the fixed block 12 stable, and also facilitate the subsequent removal of the support block 501 from the fixed block 12.

[0043] In this embodiment, the bottom of the suction cup 7 is fixedly connected to the first rubber soft magnetic patch 10, and the top of the shell 1 is fixedly connected to the second rubber soft magnetic patch 11. The bottom surface of the first rubber soft magnetic patch 10 and the bottom surface of the suction cup 7 are in the same plane, and the top surface of the second rubber soft magnetic patch 11 and the top surface of the shell 1 are in the same plane. When the suction cup 7 is attached to the top of the shell 1, the first rubber soft magnetic patch 10 and the second rubber soft magnetic patch 11 can assist the suction cup 7 and the shell 1 to be stably adsorbed, thereby realizing the exhaust function.

[0044] In this embodiment, the second rubber soft magnetic patch 11 is in the shape of a circular ring, and the first rubber soft magnetic patch 10 is evenly distributed along the circumference of the suction cup 7. The position of the first rubber soft magnetic patch 10 on the suction cup 7 corresponds to the position of the second rubber soft magnetic patch 11 one by one, ensuring that the first rubber soft magnetic patch 10 and the second rubber soft magnetic patch 11 are stably adsorbed so as to subsequently maintain the overall sealing effect of the device.

[0045] In this embodiment, the exhaust hole 13 is connected to the interior of the housing 1 through the second groove 14. The number of the exhaust holes 13 on the fixed block 12 is the same as the number of the openings 1502 on the swivel 1501. The swivel 1501 is made of rubber. When the positions of the exhaust holes 13 and the openings 1502 correspond to each other, dust in the device can be discharged through the exhaust holes 13 and the openings 1502. When the positions of the exhaust holes 13 and the openings 1502 are misaligned with each other, the sound amplification position can be cleaned.

[0046] In this embodiment, a fixing plate 1504 is fixedly connected to the rotating ring 1501, and an adjusting stud 1507 is rotatably connected to the fixing plate 1504. The outer side of the adjusting stud 1507 is threadedly connected to an outer bushing 1506. The outer bushing 1506 and the first leaf spring 1505 are fixedly connected. The middle position of the first leaf spring 1505 is suitable for gradually moving away from or approaching the fixing plate 1504 when the adjusting stud 1507 rotates. The first leaf spring 1505 and the second leaf spring 16 abut against each other. The first leaf spring 1505 and the second leaf spring 16 are alternately distributed on the rotating ring 1501. When the rotating ring 1501 rotates, the positions of the first leaf spring 1505 and the second leaf spring 16 can be changed. When the gas in the device is discharged outward, Figure 2 and Figure 6 As shown, the dust in the device will be blown toward the position of the second leaf spring 16. By screwing in or out the adjusting screw 1507, the adjusting screw 1507 drives the first leaf spring 1505 and the outer sleeve 1506 to move, thereby causing the second leaf spring 16 to expand or contract. The second leaf spring 16 can then be used as a carrying handle, making the device easier to carry.

[0047] In this embodiment, a mounting groove 17 is opened on the second leaf spring 16, and a mounting block 18 is slidably installed in the mounting groove 17. The mounting block 18 and the filter pad 19 are fixedly connected. The filter pad 19 is made of sponge material. When dust blows toward the second leaf spring 16, the filter pad 19 can collect dust. The filter pad 19 can be removed from the second leaf spring 16 or replaced later by removing the mounting block 18 from the mounting groove 17.

[0048] Specifically, the present invention is a portable external speaker for vocal music teaching. First, Figure 1-Figure 9 As shown, when the speaker is carried, the support block 501 can be removed from one side of the pressing block 502, so that the housing 1 and the fixing block 12 as well as the pressing block 502 and the rubber connecting shaft 6 can be carried separately. By rotating the adjusting stud 1507 on the switching assembly 15, when the adjusting stud 1507 is screwed in or out, the first leaf spring 1505 and the outer bushing 1506 will be driven to move. After the two sides of the first leaf spring 1505 extend outward, they will abut against the second leaf spring 16, so that the second leaf spring 16 shrinks. After the second leaf spring 16 shrinks, it can be used as a portable handle, making the device easier to carry. When the support block 501 and the pressing block 502 are docked, the support block 501 can adjust the angle of the housing 1 through the first groove 503 and the rubber connecting shaft 6 in friction contact, thereby changing the sound amplification direction of the device. The moving groove 1503 can make the first leaf spring 1505 and the two sides of the second leaf spring 16 slide stably on the rotating ring 1501.

[0049] like Figure 1 , Figure 2 and Figure 6-Figure 12As shown, after the rubber connecting shaft 6 is compressed, it can be detached from the second groove 14, and the suction cup 7 can be fitted with the top surface of the shell 1. Since the position of the first rubber soft magnetic patch 10 on the suction cup 7 corresponds to the position of the second rubber soft magnetic patch 11 on the shell 1, when the suction cup 7 is fitted with the shell 1, the first rubber soft magnetic patch 10 and the second rubber soft magnetic patch 11 can be stably adsorbed, thereby maintaining the sealing effect of the device. After squeezing the rubber connecting shaft 6, the gas in the rubber connecting shaft 6 can be discharged through the inner groove 8 and the connecting groove 9, thereby squeezing the gas into the interior of the through hole 4. When the opening 1502 on the switching component 15 and the exhaust hole 13 on the fixed block 12 are misaligned with each other (such as Figure 1 As shown), at this time, the bottom of the device keeps the exhaust hole 13 in a sealed state through the rotating ring 1501, and the top of the shell 1 is kept in a sealed state through the suction cup 7 and the rubber connecting shaft 6. When the rubber connecting shaft 6 is squeezed, the air pressure inside the shell 1 increases. By reciprocatingly squeezing the rubber connecting shaft 6, the air pressure inside the shell 1 can be intermittently increased or decreased. The gas passes through the through holes 4 evenly distributed on the connecting cover 3, and the blockage in the through holes 4 can be quickly cleaned. When the opening 1502 on the switching component 15 corresponds to the position of the exhaust hole 13, the gas can enter the shell 1 through the through hole 4, and then be discharged through the exhaust hole 13 and the opening 1502. When the suction cup 7 is attached to the top of the shell 1, the rubber connecting shaft 6 is squeezed, and the dust in the shell 1 can be discharged from the device through the exhaust hole 13. Since the position of the exhaust hole 13 corresponds to the position of the filter pad 19 on the second leaf spring 16, the dust can be collected and filtered by the filter pad 19. Later, the filter pad 19 can be removed and replaced from the second leaf spring 16 by removing the mounting block 18 from the mounting groove 17.

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable external speaker for vocal music teaching, comprising a housing (1), characterized in that: The shell (1) is provided with a connection cover (3), the connection cover (3) is provided with a through hole (4), the bottom of the shell (1) is fixedly provided with a fixing block (12), the bottom of the fixing block (12) is provided with a support assembly (5), a rubber connection shaft (6) is rotatably installed below the support assembly (5), a suction cup (7) is fixedly provided at the bottom of the rubber connection shaft (6), an inner groove (8) is provided inside the rubber connection shaft (6), a connecting groove (9) is provided between the rubber connection shaft (6) and the suction cup (7), a vent hole (13) is provided on the side of the fixing block (12), and the fixing block (12) is provided with a plurality of connecting holes (13) on the side of the fixing block (12). ) is provided in the middle of the fixing block (12), a switching assembly (15) is provided on the outer side of the fixing block (12), the switching assembly (15) comprises a rotating ring (1501) with a rotating rod installed on the outer side of the fixing block (12), openings (1502) are provided on both sides of the rotating ring (1501), a movable groove (1503) is provided on the outer peripheral surface of the rotating ring (1501), a first leaf spring (1505) and a second leaf spring (16) are slidably installed in the movable groove (1503), a filter pad (19) is installed on the second leaf spring (16), and a sound box body (20) is provided on the fixing block (12).

2. A portable external speaker for vocal music teaching according to claim 1, characterized in that: The outer peripheral surface of the shell (1) is provided with anti-skid ridges (2), the anti-skid ridges (2) are evenly distributed along the circumference of the shell (1), and the material of the anti-skid ridges (2) is rubber material.

3. The portable external speaker for vocal music teaching according to claim 1, characterized in that: The through holes (4) are evenly distributed on the connection cover (3); the connection cover (3) is in the shape of a spherical crown; and the housing (1), the connection cover (3) and the fixing block (12) are fixedly connected to form an integral structure.

4. The portable external speaker for vocal music teaching according to claim 1, characterized in that: The support assembly (5) comprises a pressing block (502) fixedly connected to the fixing block (12); a supporting block (501) is arranged at the bottom of the fixing block (12); a first groove (503) is provided at the bottom of the supporting block (501); and the first groove (503) is in frictional contact with the rubber connecting shaft (6).

5. The portable external speaker for vocal music teaching according to claim 4, characterized in that: The pressing blocks (502) are made of rubber material and are evenly distributed along the circumference of the fixed block (12), wherein half of the pressing blocks (502) and the supporting blocks (501) fit each other, and the other half of the pressing blocks (502) and the supporting blocks (501) abut against each other.

6. The portable external speaker for vocal music teaching according to claim 1, characterized in that: The bottom of the suction cup (7) is fixedly connected to a first rubber soft magnetic patch (10), and the top of the shell (1) is fixedly connected to a second rubber soft magnetic patch (11); the bottom surface of the first rubber soft magnetic patch (10) and the bottom surface of the suction cup (7) are in the same plane, and the top surface of the second rubber soft magnetic patch (11) and the top surface of the shell (1) are in the same plane.

7. The portable external speaker for vocal music teaching according to claim 6, characterized in that: The second rubber soft magnetic patch (11) is in the shape of a ring, and the first rubber soft magnetic patch (10) is evenly distributed along the circumference of the suction cup (7), and the position of the first rubber soft magnetic patch (10) on the suction cup (7) corresponds to the position of the second rubber soft magnetic patch (11) one by one.

8. The portable external speaker for vocal music teaching according to claim 1, characterized in that: The exhaust holes (13) are connected to the interior of the housing (1) via the second groove (14); the number of the exhaust holes (13) on the fixed block (12) is the same as the number of the openings (1502) on the rotating ring (1501); and the rotating ring (1501) is made of rubber.

9. The portable external speaker for vocal music teaching according to claim 8, characterized in that: A fixing plate (1504) is fixedly connected to the rotating ring (1501), and an adjusting stud (1507) is rotatably connected to the fixing plate (1504). The outer side of the adjusting stud (1507) is threadedly connected to an outer bushing (1506), and the outer bushing (1506) and the first leaf spring (1505) are fixedly connected. The middle position of the first leaf spring (1505) is suitable for gradually moving away from or approaching the fixing plate (1504) when the adjusting stud (1507) rotates. The first leaf spring (1505) and the second leaf spring (16) are in contact with each other, and the first leaf spring (1505) and the second leaf spring (16) are alternately distributed on the rotating ring (1501).

10. The portable external speaker for vocal music teaching according to claim 1, characterized in that: The second leaf spring (16) is provided with a mounting groove (17), a mounting block (18) is slidably mounted in the mounting groove (17), the mounting block (18) is fixedly connected to the filter pad (19), and the filter pad (19) is made of sponge material.

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