Teaching sound amplification equipment

Abstract

The utility model belongs to the field of teaching sound amplification equipment, and relates to teaching sound amplification equipment which comprises a loudspeaker, a first gear is rotatably arranged at the top end of the loudspeaker, one side of the first gear is meshed with a first rack, one end of the first rack is fixedly connected with a support, the support is connected with the top end of the loudspeaker in a sliding mode, and a first clamping plate is installed at the other end of the support. A transmission rod is rotatably arranged on one side of the top end of the loudspeaker, one end of the transmission rod is in transmission connection with the first gear through a bevel gear set, a worm gear is arranged in the middle of the transmission rod, and the worm gear is rotated to be matched with the transmission rod, the bevel gear set, the first gear and other opposite elements, so that the two first clamping plates can be close to each other; the connecting sleeve area of the plug end of the microphone is firmly clamped, the effect of fixing the plug end of the external microphone plug and the plug port of the loudspeaker is achieved, accidental separation of the plug end of the external microphone plug and the plug port of the loudspeaker due to external factors is reduced, and teaching quality and auditory experience of audiences are improved.

Description

Technical Field

[0001] This utility model belongs to the field of teaching amplification equipment and relates to a teaching amplification device. Background Technology

[0002] Teaching amplification equipment is an indispensable teaching aid in modern education. For example, "little bee" is a common name for teaching amplification equipment. In fact, it refers to a lightweight and portable amplifier. This type of amplifier usually has a large volume and clear sound quality, which can ensure that the teacher's voice can be clearly transmitted to every corner of the classroom during the lecture, so that students can better hear and understand the teaching content.

[0003] The existing technology has the following technical defects: Currently common microphone amplifiers require the external microphone plug to be plugged into the amplifier's interface. However, when teachers are lecturing, since the external microphone is usually worn on the teacher's head, the plug can easily separate from the amplifier when the head is turned or the position of the amplifier and microphone is moved or adjusted. This may cause a buzzing noise or a sudden interruption of sound, which will have an adverse effect on the teacher's teaching and the audience's auditory experience. Utility Model Content

[0004] The technical problem this invention aims to solve is that current common microphone amplifiers require an external microphone plug to be inserted into the amplifier's connector. However, when teachers are lecturing, the external microphone is often worn on their head. When the head moves, or the position of the amplifier and microphone is adjusted, the plug can easily separate from the amplifier. This can cause buzzing noise or sudden sound interruption, negatively impacting both the teacher's teaching and the audience's auditory experience. This invention overcomes the shortcomings of existing technology by providing a teaching amplifier.

[0005] The present invention discloses a teaching amplification device comprising an amplifier, wherein a first gear is rotatably mounted on the top of the amplifier, a first rack is meshed on one side of the first gear, a bracket is fixedly connected to one end of the first rack, the bracket is slidably connected to the top of the amplifier, a first clamping plate is mounted on the other end of the bracket, a transmission rod is rotatably mounted on one side of the top of the amplifier, one end of the transmission rod is connected to the first gear through a bevel gear set, a worm gear is provided in the middle of the transmission rod, a worm is meshed on one side of the worm gear, and the worm is rotatably connected to the top of the amplifier.

[0006] Preferably, the first clamping plate has multiple sets of telescopic rods on one side, and the telescopic ends of the telescopic rods are connected to the second clamping plate. The second clamping plate has an installation groove inside one end, and a first spring is installed inside one end of the installation groove. The other end of the first spring is connected to a push rod, and the other end of the push rod is provided with a push plate. The installation groove is elastically slidably connected to a sliding plate through the second spring. The push plate and the surface of the sliding plate are elastically abutted. A first trapezoidal block is installed at one end of the sliding plate, and a second trapezoidal block is installed at one end of the second clamping plate. The second clamping plate has a slot inside that fits the shape of the sliding plate.

[0007] Preferably, the slot is slidably connected to the second rack by a third spring. A second gear that meshes with the second rack is rotatably installed inside one end of the second clamping plate. A first pulley set is provided at one end of the second gear. A second pulley set is drivenly connected to the other end of the first pulley set. A threaded cylinder is rotatably passed through the middle of the second clamping plate. One end of the threaded cylinder is drivenly connected to the second pulley set. A screw is threaded through the inside of the threaded cylinder. The other end of the screw is connected to the first clamping plate.

[0008] Preferably, the second clamping plate has a first sliding groove at one end, the first sliding groove corresponds to the mounting groove, and the push rod has a pull block at one end, with the other end of the pull block extending to the outside of the first sliding groove.

[0009] Preferably, a third rack is engaged on one side of the first gear, a baffle is slidably connected to the outer wall of the loudspeaker, and one end of the third rack is connected to the baffle.

[0010] Preferably, the top outer wall of the loudspeaker is provided with a shell, one end of the worm gear passes through the inside of the shell and is connected to a knob, one end of the pull block extends to the outside of the shell, and the shell is provided with a second sliding groove for the pull block to slide.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention, by rotating a worm gear and cooperating with a transmission rod, bevel gear set, first gear and other relative components, can bring two sets of first clamping plates closer together to firmly clamp the connecting sleeve area of ​​the microphone plug end, thereby fixing the external microphone plug end to the amplifier's plug interface, reducing the possibility of accidental separation due to external factors, and improving teaching quality and the audience's auditory experience.

[0013] The push plate is inserted into the slot, which pushes the second rack to move continuously into the slot. The meshing of the rack causes it to rotate, and the rotational force is transmitted to the threaded cylinder through the first and second pulley sets. This causes the threaded cylinder to rotate, and the screw gradually extends into the cylinder. This, in turn, causes the two sets of second clamping plates to descend with the first clamping plate as a support point. This creates a downward pulling force on the fixed microphone plug connector, which, combined with the horizontal clamping force generated by the second and first clamping plates, achieves a double fixing effect, further improving the stability and reliability of the microphone plug connector during use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the overall structure of the loudspeaker of this utility model.

[0016] Figure 3 This is a partial structural diagram of the loudspeaker of this utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the first gear of this utility model.

[0018] Figure 5 This is a schematic diagram of the structure of the first and second clamping plates of this utility model.

[0019] Figure 6 This is a partial schematic diagram of the second clamping plate of this utility model.

[0020] Figure 7 This is a schematic diagram showing the connection between the first pulley group and the second pulley group of the second clamping plate of this utility model.

[0021] In the diagram: 1. Megaphone; 2. First gear; 3. First rack; 4. Bracket; 5. First clamping plate; 6. Transmission rod; 7. Bevel gear set; 8. Worm gear; 9. Worm; 10. Telescopic rod; 11. Second clamping plate; 12. Mounting slot; 13. First spring; 14. Push rod; 15. Slide plate; 16. Second spring; 17. First trapezoidal block; 18. Push plate; 19. Second trapezoidal block; 20. Slot; 21. Second rack; 22. Third spring; 23. Second gear; 24. Threaded cylinder; 25. Screw; 26. First pulley set; 27. Second pulley set; 28. First slide groove; 29. ​​Pull block; 30. Third rack; 31. Baffle; 32. Housing; 33. Knob; 34. Second slide groove. Detailed Implementation

[0022] Example 1

[0023] like Figures 1 to 7As shown, the device includes a loudspeaker 1. A first gear 2 is rotatably mounted on the top of the loudspeaker 1. A first rack 3 is meshed on one side of the first gear 2. A bracket 4 is fixedly connected to one end of the first rack 3. The bracket 4 is slidably connected to the top of the loudspeaker 1. A first clamping plate 5 is installed on the other end of the bracket 4. A transmission rod 6 is rotatably mounted on one side of the top of the loudspeaker 1. One end of the transmission rod 6 is connected to the first gear 2 through a bevel gear set 7. A worm gear 8 is provided in the middle of the transmission rod 6. A worm 9 is meshed on one side of the worm gear 8. The worm 9 is rotatably connected to the top of the loudspeaker 1.

[0024] By connecting the external microphone plug to the amplifier 1, rotating the worm gear 8 engages the transmission rod 6, which in turn rotates the transmission rod 6. The transmission rod 6, through the bevel gear set 7, drives the two sets of first gears 2 to rotate and engages with the opposing first rack 3, causing the two sets of brackets 4 to slide on the top of the amplifier 1. This brings the two sets of first clamps 5 closer together, firmly clamping the connection sleeve area of ​​the microphone plug, thus fixing the external microphone plug to the amplifier 1 and reducing the risk of accidental separation due to external factors. This improves teaching quality and the audience's auditory experience. Conversely, reversing the worm gear 8 quickly releases the clamp, allowing for adaptation to different teaching needs.

[0025] Example 2

[0026] like Figures 1 to 7 As shown, the first clamping plate 5 has multiple sets of telescopic rods 10 on one side. The telescopic ends of the telescopic rods 10 are connected to the second clamping plate 11. The second clamping plate 11 has an installation groove 12 inside one end. A first spring 13 is installed inside one end of the installation groove 12. A push rod 14 is connected to the other end of the first spring 13. A push plate 18 is provided at the other end of the push rod 14. A slide plate 15 is elastically slidably connected to one end of the installation groove 12 through a second spring 16. The push plate 18 and the surface of the slide plate 15 are elastically abutted. A first trapezoidal block 17 is installed at one end of the slide plate 15. A second trapezoidal block 19 is installed at one end of the second clamping plate 11. A slot 20 that fits the shape of the slide plate 15 is opened inside one end of the second clamping plate 11.

[0027] When the two sets of second clamping plates 11 are identical in shape to the first clamping plate 5 and move along with the first clamping plate 5, when the two sets of second clamping plates 11 approach each other to clamp the external microphone plug connector, the inclined surface of the second trapezoidal block 19 will push the inclined surface of the first trapezoidal block 17. The first trapezoidal block 17 will drive the slide plate 15 to continuously rise out of the mounting slot 12. At this time, the first spring 13, which is in a compressed state, releases its elastic force and quickly pushes one end of the push rod 14, so that the push plate 18 extends from the inside of the mounting slot 12 into the inside of the slot 20, thereby changing direction to connect the two sets of second clamping plates 11. When the microphone plug connector is subjected to a pulling force, the two sets of second clamping plates 11 will jointly bear the pulling stress, thereby improving the stability and reliability of clamping and reducing the accidental dislodgement of the plug.

[0028] The slot 20 is slidably connected to the second rack 21 by the third spring 22. The second gear 23, which meshes with the second rack 21, is rotatably installed inside one end of the second clamping plate 11. The second gear 23 is provided with a first pulley group 26 at one end. The other end of the first pulley group 26 is connected to a second pulley group 27. A threaded cylinder 24 is rotatably passed through the middle of the second clamping plate 11. One end of the threaded cylinder 24 is connected to the second pulley group 27. A screw 25 is threaded through the inside of the threaded cylinder 24. The other end of the screw 25 is connected to the first clamping plate 5.

[0029] When the two sets of second clamping plates 11 are in the state of clamping the microphone plug connector, their push plate 18 will extend into the slot 20. At this time, it will push the second rack 21 to move continuously into the slot 20, thereby engaging and driving the second rack 21 to rotate. The rotational force is transmitted to the threaded cylinder 24 through the first pulley group 26 and the second pulley group 27, causing the threaded cylinder 24 to rotate. Under the guidance and restriction of the multiple sets of telescopic rods 10, the screw 25 is driven to gradually extend into the threaded cylinder 24, thereby driving the two sets of second clamping plates 11 to descend with the first clamping plate 5 as the support point, generating a downward pulling force on the fixed microphone plug connector. This, combined with the horizontal clamping force generated by the second clamping plate 11 and the first clamping plate 5, achieves a double fixing effect, further improving the stability and reliability of the microphone plug connector during use.

[0030] Example 3

[0031] like Figures 1 to 7 As shown, the second clamping plate 11 has a first sliding groove 28 at one end, which corresponds to the mounting groove 12. The push rod 14 has a pull block 29 at one end, and the other end of the pull block 29 extends to the outside of the first sliding groove 28.

[0032] When the clamping plates move away from each other, the push rod 14 and the push plate 18 can be pushed into the mounting groove 12 by pulling the pull block 29. At the same time, when the clamping plates move away from each other, the second trapezoidal block 19 no longer pushes the first trapezoidal block 17, and the second spring 16 returns to its original position by pulling the slide plate 15 back to its original position, thus limiting the position of the push rod 14 again, so that the above steps of fixing the microphone plug connector can be repeated in subsequent use.

[0033] The first gear 2 is meshed with a third rack 30 on one side, and a baffle 31 is slidably connected to the outer wall of the loudspeaker 1. One end of the third rack 30 is connected to the baffle 31.

[0034] When the external microphone plug is unplugged from the amplifier 1's connector, the first gear 2 will rotate due to the reverse worm gear 8 described above. This rotation will then drive the first rack 3 and the third rack 30 to move in opposite directions. The third rack 30 will then move the baffle 31 to block the connector of the amplifier 1, reducing the amount of dust and impurities that could fall into the connector and cause problems such as poor contact.

[0035] The loudspeaker 1 has a housing 32 on its top outer wall. All the above-mentioned components are located inside the housing 32. One end of the worm gear 9 passes through the inside of the housing 32 and is connected to a knob 33. One end of the pull block 29 extends to the outside of the housing 32. The housing 32 has a second sliding groove 34 for the pull block 29 to slide.

[0036] The outer casing 32 is used to provide simple protection for the above-mentioned components, and the knob 33 allows personnel to easily turn the knob 33.

[0037] Working principle: By connecting the external microphone plug to the amplifier 1, rotating the worm gear 8 engages the transmission rod 6, which in turn rotates the transmission rod 6. The transmission rod 6, through the bevel gear set 7, drives the two sets of first gears 2 to rotate, engaging with the opposing first rack 3, causing the two sets of brackets 4 to slide on the top of the amplifier 1. This brings the two sets of first clamping plates 5 closer together, firmly clamping the connecting sleeve area of ​​the microphone plug, thus fixing the external microphone plug to the amplifier 1's interface and reducing the risk of accidental separation due to external factors. This improves teaching quality and the audience's auditory experience. Furthermore, when the two sets of second clamping plates 11 come close together to clamp the external microphone plug, the inclined surface of the second trapezoidal block 19 pushes the inclined surface of the first trapezoidal block 17, causing the first trapezoidal block 17 to continuously move the sliding plate 15 from the mounting slot 12. As the first spring 13, which is under compression, is released, it quickly pushes one end of the push rod 14, causing the push plate 18 to extend from the mounting groove 12 into the slot 20. This pushes the second rack 21 to move continuously into the slot 20, thus engaging and rotating the second rack 21. The rotational force is then transmitted to the threaded cylinder 24 through the first pulley group 26 and the second pulley group 27, causing the threaded cylinder 24 to rotate. Under the guidance and restriction of the multiple sets of telescopic rods 10, the screw 25 gradually extends into the threaded cylinder 24, thereby causing the two sets of second clamping plates 11 to descend with the first clamping plate 5 as the support point. This generates a downward pulling force on the fixed microphone plug connector, which, combined with the horizontal clamping force generated by the second clamping plate 11 and the first clamping plate 5, achieves a double fixing effect, further improving the stability and reliability of the microphone plug connector during use.

[0038] The descriptions of the orientation and relative positional relationships of the structure in this utility model, such as descriptions of front, back, left, right, up, and down, do not constitute a limitation on this utility model, but are merely for the convenience of description.

Claims

1. A teaching amplification device, characterized in that: The device includes a loudspeaker (1), a first gear (2) is rotatably mounted on the top of the loudspeaker (1), a first rack (3) is meshed on one side of the first gear (2), a bracket (4) is fixedly connected to one end of the first rack (3), the bracket (4) is slidably connected to the top of the loudspeaker (1), a first clamping plate (5) is installed on the other end of the bracket (4), a transmission rod (6) is rotatably mounted on one side of the top of the loudspeaker (1), one end of the transmission rod (6) is connected to the first gear (2) through a bevel gear set (7), a worm gear (8) is provided in the middle of the transmission rod (6), a worm (9) is meshed on one side of the worm gear (8), and the worm (9) is rotatably connected to the top of the loudspeaker (1).

2. The teaching amplification device according to claim 1, characterized in that: The first clamping plate (5) is provided with multiple sets of telescopic rods (10) on one side. The telescopic end of the telescopic rod (10) is connected to the second clamping plate (11). The second clamping plate (11) has an installation groove (12) inside one end. The first spring (13) is installed inside one end of the installation groove (12). The other end of the first spring (13) is connected to the push rod (14). The other end of the push rod (14) is provided with a push plate (18). The installation groove (12) is elastically slidably connected to the slide plate (15) through the second spring (16). The push plate (18) and the surface of the slide plate (15) are elastically abutted. The slide plate (15) has a first trapezoidal block (17) installed at one end. The second clamping plate (11) has a second trapezoidal block (19) installed at one end. The second clamping plate (11) has a slot (20) inside one end that fits the shape of the slide plate (15).

3. The teaching amplification device according to claim 2, characterized in that: The slot (20) is slidably connected to the second rack (21) by the third spring (22). The second clamping plate (11) is rotatably mounted with a second gear (23) that meshes with the second rack (21) at one end. The second gear (23) is provided with a first pulley group (26) at one end. The second pulley group (26) is connected to a second pulley group (27) at the other end. A threaded cylinder (24) is rotatably passed through the middle of the second clamping plate (11). One end of the threaded cylinder (24) is connected to the second pulley group (27). A screw (25) is threaded through the inside of the threaded cylinder (24). The other end of the screw (25) is connected to the first clamping plate (5).

4. A teaching amplification device according to claim 2, characterized in that: The second clamping plate (11) has a first sliding groove (28) at one end, which corresponds to the mounting groove (12). The push rod (14) has a pull block (29) at one end, and the other end of the pull block (29) extends to the outside of the first sliding groove (28).

5. A teaching amplification device according to claim 1, characterized in that: The first gear (2) is meshed with a third rack (30) on one side, and a baffle (31) is slidably connected to the outer wall of the loudspeaker (1). One end of the third rack (30) is connected to the baffle (31).

6. The teaching amplification device according to claim 4, characterized in that: The loudspeaker (1) has a shell (32) on its top outer wall. One end of the worm gear (9) passes through the inside of the shell (32) and is connected to a knob (33). One end of the pull block (29) extends to the outside of the shell (32). The shell (32) has a second groove (34) for the pull block (29) to slide.

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