An educational amplification device

Abstract

This invention discloses an educational amplification device, comprising an amplification device body and a microphone that cooperates with the amplification device body. A shaft is provided on the side of the amplification device body, and a bushing is axially limited and slidably connected to the shaft. A mounting base is fixedly connected to the surface of the bushing, and a connector is fixedly connected to the inner wall of the mounting base. An elastic bellows tube, fixedly connected to the microphone, is fixedly connected to the end of the connector away from the bushing. A metal pressure plate is provided on the rear side of the amplification device body, cooperating with the amplification device body and clamping the entire amplification device body onto the user's clothing. An auxiliary device is provided on the amplification device body to keep the metal pressure plate in an open state. This invention, through the cooperative use of the above structures, solves the problem that existing amplification devices require the microphone and amplifier to be separately fixed to the user's body during use, which is cumbersome and inconvenient.

Description

Technical Field

[0001] This invention relates to the field of amplification device technology, specifically to an educational amplification device. Background Technology

[0002] In daily teaching and education, amplification devices have gradually become an indispensable tool for lecturers when teaching in large classrooms.

[0003] However, existing amplification devices require the microphone and amplifier to be fixed to the user's body separately, which is cumbersome to operate and inconvenient to use. Summary of the Invention

[0004] The purpose of this invention is to provide an educational amplification device that has the advantages of microphone angle adjustment, magnetic adsorption, and enhanced microphone support, thus solving the problems in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an educational amplification device, comprising an amplification device body and a microphone that cooperates with the amplification device body, wherein a shaft is provided on the side of the amplification device body, a bushing is axially limited and slidably connected to the shaft, a mounting base is fixedly connected to the surface of the bushing, a connector is fixedly connected to the inner wall of the mounting base, an elastic bellows tube that is fixedly connected to the microphone is fixedly connected to one end of the connector that is away from the bushing, and a metal pressure plate is provided on the rear side of the amplification device body that cooperates with the amplification device body and clamps the entire amplification device body onto the user's clothing.

[0006] Preferably, the main body of the amplifier is provided with an auxiliary device 1 for opening the metal pressure plate. The auxiliary device 1 includes a mounting base 2 fixed to the back of the main body of the amplifier. The inner wall of the mounting base 2 is provided with a connecting arm fixed to the back of the metal pressure plate. A fixed shaft is fixedly connected to the inner wall of the mounting base 2. The fixed shaft passes through the connecting arm and is movably connected to the connecting arm. A torsion spring is sleeved on the arc-shaped contour of the fixed shaft. One end of the torsion spring is fixedly connected to the inner wall of the mounting base 2, and the other end of the torsion spring is fixedly connected to the surface of the connecting arm.

[0007] Preferably, the main body of the loudspeaker is provided with an auxiliary device two for keeping the elastic corrugated tube inflated. The auxiliary device two includes an air storage bladder fixed on the back of the main body of the loudspeaker. An extension plate that compresses and cooperates with the air storage bladder is fixedly connected to the surface of the metal pressure plate. An elastic air guide tube is passed through and fixedly connected to one end of the air storage bladder away from the mounting base two. The other end of the elastic air guide tube away from the air storage bladder passes through and extends into the elastic corrugated tube.

[0008] Preferably, the back of the amplifier body is provided with a mounting groove, and an auxiliary device three that cooperates with the attraction of the metal pressure plate is fixedly connected in the mounting groove. The auxiliary device three includes a metal sleeve fixed in the mounting groove, and a strong magnetic column is rotatably connected in the metal sleeve. One end of the shaft near the amplifier body is fixedly connected to the end of the strong magnetic column. The inner wall of the metal sleeve is provided with an outwardly extending partition groove, and a metal copper strip is fixedly connected to the inner wall of the partition groove.

[0009] Preferably, there are two elastic air guide tubes, and the two elastic air guide tubes are symmetrically arranged about the horizontal center line of the elastic corrugated tube.

[0010] Preferably, the metal sleeve has a groove on the side facing the metal pressure plate, and the metal pressure plate has a protrusion that mates with the groove.

[0011] Preferably, the shaft is a rectangular rod, and the bushing is a rectangular sliding sleeve adapted to the shaft.

[0012] Preferably, the corners of the connecting arms are all rounded.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] I. This invention features a built-in Bluetooth module and main speaker in the main body of the amplifier device, with an external charging interface. When a user speaks into the microphone, the sound is amplified and emitted by the amplifier device. The microphone is covered with a foam sleeve, and a pair of shafts and a pair of connecting parts on the mounting base provide support. When the user rotates the microphone from horizontal to vertical and brings it close to their mouth, they manually pinch the mounting base, causing it to rotate relative to the amplifier device, along with the shaft and the sleeve. For safety, the flexible corrugated tube, when not filled with high-pressure gas, exhibits the softness of rubber, preventing punctures and other safety issues. Before the metal pressure plate clamps the amplifier device, the user's clothing is placed between the metal pressure plate and the amplifier device. The clamping action between the metal pressure plate and the amplifier device secures the entire amplifier device to the user's clothing, and the microphone, positioned on the amplifier device, is also fixed in place, eliminating the need for a separate microphone fixation operation.

[0015] Second, the present invention facilitates the insertion of clothing by setting auxiliary device one; enhances the replenishment of gas in the elastic bellows by setting auxiliary device two; and triggers the magnetic attraction of the metal pressure plate when the elastic bellows is vertically adjusted, thereby achieving the clamping and fixing of the entire device.

[0016] Third, the present invention solves the problem that in actual use, existing amplification devices require the microphone and amplifier to be fixed separately to the user's body, which is cumbersome and inconvenient to operate. Attached Figure Description

[0017] Figure 1 This is a perspective view of the bushing of the present invention;

[0018] Figure 2 This is a perspective view of the air reservoir of the present invention;

[0019] Figure 3 This is a perspective view of the metal sleeve of the present invention;

[0020] Figure 4 This is a schematic diagram of the magnetic field lines when the strong magnetic column of the present invention does not generate magnetic force on the metal pressure plate;

[0021] Figure 5 This is a schematic diagram of the magnetic field lines when the strong magnetic column of the present invention generates magnetic force on the metal pressure plate;

[0022] Figure 6 This is a perspective view of the metal pressure plate of the present invention;

[0023] Figure 7 This is a perspective view of the mounting base 2 of the present invention.

[0024] In the diagram: 1. Amplifier body; 2. Microphone; 3. Shaft 1; 4. Bushing; 5. Mounting base 1; 6. Connector; 7. Elastic bellows; 8. Metal pressure plate; 9. Mounting base 2; 10. Connecting arm; 11. Fixed shaft; 12. Torsion spring; 13. Air reservoir; 14. Extension plate; 15. Air duct; 16. Mounting groove; 17. Metal sleeve; 171. Dividing through groove; 172. Groove; 18. Strong magnetic column; 19. Metal copper strip. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1

[0027] This invention provides a technical solution: an educational amplification device, including an amplification device body 1 and a microphone 2 that cooperates with the amplification device body 1. The amplification device body 1 has a built-in Bluetooth module and a main speaker, and an external charging interface. For specific details regarding the amplification device, please refer to the prior art patent document, patent number: CN110636427B, patent title: A wearable amplification device for ideological and political education. The user speaks into the microphone 2, and the sound is amplified by the amplification device body 1 before being emitted. The microphone 2 is covered with a foam sleeve. A shaft 3 is provided on the side of the amplification device body 1, and a bushing 4 is axially limited and slidably connected to the shaft 3, supporting the bushing 4. A mounting base 5 is fixedly connected to the surface of the bushing 4, and a connector 6 is fixedly connected to the inner wall of the mounting base 5, supporting the connector 6. When the user rotates the microphone 2 from horizontal to vertical and brings it close to the user's mouth, the user manually pinches the mounting base 5. 5. This allows the mounting base 5, along with the bushing 4 and shaft 3, to rotate relative to the amplifier body 1. The end of the connector 6 furthest from the bushing 4 is fixedly connected to an elastic bellows 7, which is also fixedly connected to the microphone 2. For safety reasons, when the elastic bellows 7 is not filled with high-pressure gas, it will exhibit the softness of rubber material, preventing punctures and other safety issues. A metal pressure plate 8 is located on the rear side of the amplifier body 1, cooperating with and clamping the amplifier body 1 entirely onto the user's clothing. Before clamping the amplifier body 1 with the metal pressure plate 8, the user's clothing is placed between the metal pressure plate 8 and the amplifier body 1. Then, through the mutual clamping between the metal pressure plate 8 and the amplifier body 1, the amplifier body 1 is fixed entirely onto the user's clothing. The microphone 2 is also fixed on the amplifier body 1, eliminating the need for separate fixing of the microphone 2.

[0028] Example 2

[0029] Based on Embodiment 1, further: the main body 1 of the loudspeaker is provided with an auxiliary device 1 for opening the metal pressure plate 8. The auxiliary device 1 includes a mounting base 2 9 fixed to the back of the main body 1 of the loudspeaker. The inner wall of the mounting base 2 9 is provided with a connecting arm 10 fixed to the back of the metal pressure plate 8. A fixed shaft 11 is fixedly connected to the inner wall of the mounting base 2 9. The fixed shaft 11 passes through the connecting arm 10 and is movably connected to the connecting arm 10. A torsion spring 12 is sleeved on the arc-shaped contour of the fixed shaft 11. One end of the torsion spring 12 is fixedly connected to the inner wall of the mounting base 2 9, and the other end of the torsion spring 12 is fixedly connected to the surface of the connecting arm 10.

[0030] refer to Figure 2The connecting arm 10, which is fixed to the main body 1 of the amplifier device by the mounting base 2 9, serves as a support. The connecting arm 10, which is placed inside the mounting base 2 9, is penetrated by the fixed shaft 11 and rotatably connected to the fixed shaft 11, so that the connecting arm 10 can rotate within the mounting base 2 9. Through the elastic force of the torsion spring 12, the connecting arm 10 can carry the metal pressure plate 8 away from the main body 1 of the amplifier device, leaving a gap between it and the main body 1 of the amplifier device. This gap allows the user to easily put their clothes in, making it more convenient to use.

[0031] Example 3

[0032] Building upon Example 2, the following is a further step:

[0033] The main body 1 of the loudspeaker is provided with an auxiliary device 2 that keeps the elastic bellows 7 inflated. The auxiliary device 2 includes an air bladder 13 fixed on the back of the main body 1 of the loudspeaker. An extension plate 14 that is squeezed and fitted with the air bladder 13 is fixedly connected to the surface of the metal pressure plate 8. An elastic air guide tube 15 is passed through and fixedly connected to one end of the air bladder 13 away from the mounting base 2 9. The end of the elastic air guide tube 15 away from the air bladder 13 passes through and extends into the elastic bellows 7.

[0034] refer to Figure 2 When the metal pressure plate 8 rotates rapidly due to magnetic attraction and approaches the main body 1 of the amplifier, the extension plate 14 on it will rotate synchronously. The extension plate 14 will contact and impact the air storage bag 13 on the main body 1 of the amplifier, so that the gas squeezed by the air storage bag 13 will be transferred to the elastic bellows 7 through the elastic air guide tube 15. Once the elastic bellows 7 is filled with high-pressure gas, it will expand and have a certain rigidity, which can fully support the microphone 2.

[0035] Example 4

[0036] Based on Embodiment 3, a further improvement is made: a mounting groove 16 is provided on the back of the main body 1 of the loudspeaker device, and an auxiliary device 3 that attracts and cooperates with the metal pressure plate 8 is fixedly connected in the mounting groove 16. The auxiliary device 3 includes a metal sleeve 17 fixed in the mounting groove 16, and a strong magnetic column 18 is rotatably connected in the metal sleeve 17. One end of the shaft 3 near the main body 1 of the loudspeaker device is fixedly connected to the end of the strong magnetic column 18. An outwardly extending partition groove 171 is provided on the inner wall of the metal sleeve 17, and a metal copper strip 19 is fixedly connected to the inner wall of the partition groove 171.

[0037] refer to Figure 2 , Figure 3 , Figure 4 and Figure 5 Before use, adjust the angle of microphone 2 from horizontal to vertical, referring to... Figure 4At this time, the magnetic field lines can form a closed loop through the inside of the metal sleeve 17. Therefore, there is almost no magnetic field outside the metal sleeve 17, and it cannot generate a strong attraction to the metal pressure plate 8.

[0038] Conversely, refer to Figure 5 When the mounting base 15 is manually rotated 90 degrees, the strong magnetic column 18 rotates inside the metal sleeve 17. At this time, the magnetic field lines cannot form a closed loop through the metal sleeve 17, so they are dispersed into the air. At this time, the metal sleeve 17 can generate a strong attraction to the metal pressure plate 8.

[0039] Therefore, when the flexible bellows 7 is manually adjusted to a vertical position, the metal pressure plate 8 is immediately attracted to the metal sleeve 17 to complete the locking and clamping. During the contact between the metal pressure plate 8 and the metal sleeve 17, the metal pressure plate 8 will squeeze the air storage bag 13 on the main body 1 of the loudspeaker, so that the gas in the air storage bag 13 is replenished into the flexible bellows 7, thereby increasing the air pressure in the flexible bellows 7.

[0040] Furthermore, there are two flexible air guide tubes 15, and the two flexible air guide tubes 15 are symmetrically arranged about the horizontal center line of the flexible corrugated tube 7.

[0041] refer to Figure 2 The two elastic air pipes 15 correspond to the two air storage bags 13 and the two extension plates 14, which makes the metal pressure plate 8 more stable under pressure when squeezed; and secondly, it can provide a larger gas volume for the elastic bellows 7 to meet the actual higher strength use requirements.

[0042] Furthermore, a groove 172 is provided on the side of the metal sleeve 17 facing the metal pressure plate 8, and a protrusion is provided on the metal pressure plate 8 to cooperate with the groove 172.

[0043] refer to Figure 3 , Figure 2 The groove 172 and the protrusions on the metal pressure plate 8 increase the contact area between the two, resulting in a better clamping effect.

[0044] Furthermore, shaft 3 is a rectangular rod, and bushing 4 is a rectangular sliding sleeve that is adapted to shaft 3.

[0045] refer to Figure 2 By setting the shaft 3 as a rectangular rod and the bushing 4 as a rectangular sliding sleeve adapted to the shaft 3, the bushing 4 can synchronously drive the rotation of the shaft 3, and the bushing 4 can move axially relative to the shaft 3, enabling more precise adjustment.

[0046] Furthermore, the corners of the connecting arm 10 are all rounded.

[0047] By using rounded corners at the bends of the connecting arm 10, discomfort caused to the user by sharp edges on the connecting arm 10 can be reduced.

[0048] Working Principle: This educational amplification device, when in use, utilizes a built-in Bluetooth module and main speaker in its main body 1, with an external charging port. The user speaks into the microphone 2, and the sound is amplified by the main body 1 before being emitted. The microphone 2 is covered with a foam sleeve. Shaft 3 supports the sleeve 4, and mounting base 5 supports the connector 6. When the user rotates the microphone 2 from horizontal to vertical and brings it close to their mouth, manually squeezing mounting base 5 causes it to rotate relative to the main body 1, along with the sleeve 4 and shaft 3. For safety reasons... Taking all factors into consideration, when the flexible bellows 7 is not filled with high-pressure gas, it will exhibit the softness of rubber material, which can avoid safety issues such as punctures. Before the metal pressure plate 8 clamps the amplifier body 1, the user's clothing is placed between the metal pressure plate 8 and the amplifier body 1. Then, through the mutual clamping between the metal pressure plate 8 and the amplifier body 1, the amplifier body 1 is fixed to the user's clothing as a whole. The microphone 2 is set on the amplifier body 1, so the microphone 2 is also fixed, and there is no need to perform a separate fixing operation on the microphone 2.

[0049] Second, the present invention facilitates the insertion of clothing by setting auxiliary device one; enhances the replenishment of gas in the elastic bellows 7 by setting auxiliary device two; and triggers the magnetic attraction of the metal pressure plate 8 when the elastic bellows 7 is vertically adjusted, thereby achieving the overall clamping and fixing of the device.

[0050] Third, the present invention solves the problem that in actual use, existing amplification devices require the microphone and amplifier to be fixed separately to the user's body, which is cumbersome and inconvenient to operate.

[0051] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed without any doubt based on existing technical common sense. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An educational amplification device, characterized in that: The device includes a loudspeaker body (1) and a microphone (2) that cooperates with the loudspeaker body (1). The loudspeaker body (1) has a shaft (3) on its side. A bushing (4) is axially limited and slidably connected to the shaft (3). A mounting base (5) is fixedly connected to the surface of the bushing (4). A connector (6) is fixedly connected to the inner wall of the mounting base (5). An elastic bellows tube (7) that is fixedly connected to the microphone (2) is fixedly connected to the end of the connector (6) away from the bushing (4). A metal pressure plate (8) that cooperates with the loudspeaker body (1) and clamps the loudspeaker body (1) as a whole onto the user's clothing is provided on the rear side of the loudspeaker body (1). The main body (1) of the loudspeaker is provided with an auxiliary device 1 that puts the metal pressure plate (8) in an open state. The auxiliary device 1 includes a mounting base 2 (9) fixed on the back of the main body (1) of the loudspeaker. The inner wall of the mounting base 2 (9) is provided with a connecting arm (10) fixed on the back of the metal pressure plate (8). A fixed shaft (11) is fixedly connected to the inner wall of the mounting base 2 (9). The fixed shaft (11) passes through the connecting arm (10) and is movably connected to the connecting arm (10). A torsion spring (12) is sleeved on the arc-shaped contour of the fixed shaft (11). One end of the torsion spring (12) is fixedly connected to the inner wall of the mounting base 2 (9), and the other end of the torsion spring (12) is fixedly connected to the surface of the connecting arm (10). The main body (1) of the loudspeaker is provided with an auxiliary device two for keeping the elastic corrugated tube (7) inflated. The auxiliary device two includes an air bladder (13) fixed on the back of the main body (1). An extension plate (14) that is squeezed and matched with the air bladder (13) is fixedly connected to the surface of the metal pressure plate (8). An elastic air guide tube (15) is passed through and fixedly connected to one end of the air bladder (13) away from the mounting base (9). The end of the elastic air guide tube (15) away from the air bladder (13) passes through and extends into the elastic corrugated tube (7).

2. The educational amplification device according to claim 1, characterized in that: The back of the main body (1) of the loudspeaker is provided with a mounting groove (16). An auxiliary device three is fixedly connected in the mounting groove (16) and is attracted and cooperated with the metal pressure plate (8). The auxiliary device three includes a metal sleeve (17) fixed in the mounting groove (16). A strong magnetic column (18) is rotatably connected in the metal sleeve (17). One end of the shaft (3) near the main body (1) of the loudspeaker is fixedly connected to the end of the strong magnetic column (18). An outwardly extending partition groove (171) is provided on the inner wall of the metal sleeve (17). A metal copper strip (19) is fixedly connected to the inner wall of the partition groove (171).

3. The educational amplification device according to claim 2, characterized in that: The number of the elastic air guide tubes (15) is two, and the two elastic air guide tubes (15) are symmetrically arranged with respect to the horizontal center line of the elastic corrugated tube (7).

4. The educational amplification device according to claim 2, characterized in that: The metal sleeve (17) has a groove (172) on the side facing the metal pressure plate (8), and the metal pressure plate (8) has a protrusion that matches the groove (172).

5. The educational amplification device according to claim 1, characterized in that: The shaft (3) is a rectangular rod, and the bushing (4) is a rectangular sliding sleeve that is adapted to the shaft (3).

6. The educational amplification device according to claim 1, characterized in that: The corners of the connecting arm (10) are all rounded.

Images