Wall-mounted audio acquisition device for music teaching

Abstract

The invention discloses a wall-mounted audio acquisition device for music teaching, which comprises a mounting bracket, a collector and a windshield are mounted on the mounting bracket, the windshield is located on the front side of the collector, a mounting sleeve is mounted at the lower end of the mounting bracket, a wall-mounted fixing mechanism is rotatably mounted on the mounting sleeve, and a wall-mounted fixing mechanism is mounted on the mounting sleeve. An air pressure balance mechanism used for balancing internal air pressure and external air pressure is arranged in the wall-mounted fixing mechanism and abuts against the mounting sleeve, an arranged suction cup is matched with an evacuating piece, so that air in the suction cup can be completely extracted, and a water bag and a water dipping piece are arranged in a matched mode. After the suction cup is wetted with water, outside air is not easy to enter the suction cup, so that air leakage is avoided, air pressure difference is formed inside and outside the suction cup, and the suction cup can be tightly pressed on a wall or other planes by the aid of atmospheric pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of audio collection, and in particular to a wall-mounted audio collection device for music teaching. Background Art

[0002] In the process of music teaching, it is often necessary to first transfer the music audio into the computer through recording, and then use computer software to analyze and synthesize the audio, so as to make a music tutorial for students to use, so that students can listen to music teaching repeatedly to assist students in music learning, and also make it convenient for music teachers to teach music to students.

[0003] Currently, audio collection is carried out by using a microphone. In order to facilitate use and not interfere with the normal singing or playing of the music teacher, the microphone is fixed. Generally, there are two usage states: ground fixed and wall mounted. The ground fixed type is to pre-install a microphone fixing bracket on the ground, and then the card is connected to the upper end of the fixing bracket, and the user stands in front of the fixing bracket to use the microphone.

[0004] The wall-mounted type is to fix a bracket on the wall, then install a fixed bracket on the unified bracket, and then fix the microphone on the fixed bracket. Compared with the ground-mounted type, the wall-mounted type occupies less space and does not hinder the range of space activities. However, it needs to fix the bracket in advance during use, which makes it impossible to change different classrooms for use, and the flexibility is poor. For this reason, we designed a wall-mounted audio acquisition device for music teaching. Summary of the invention

[0005] The present invention provides a wall-mounted audio collection device for music teaching, which solves the above-mentioned problem.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A wall-mounted audio collection device for music teaching comprises a mounting bracket, on which a collector and a windshield are mounted, the windshield is located in front of the collector, a mounting sleeve is mounted at the lower end of the mounting bracket, a wall-hanging fixing mechanism is rotatably mounted on the mounting sleeve, an air pressure balancing mechanism for balancing internal and external air pressures is arranged in the wall-hanging fixing mechanism, and the air pressure balancing mechanism abuts against the mounting sleeve.

[0007] Preferably, the mounting bracket includes two groups of mounting shaft frames, support arms are rotatably mounted above the two groups of mounting shaft frames through bolts, a swing arm is rotatably mounted on the upper end of the support arm through a shaft seat, the collector is arranged at one end of the swing arm away from the support arm through a mounting screw, the wind shield is mounted on the swing arm, a plug-in column is fixed at the lower end of the support arm, a plug-in slot is provided at the upper end of the mounting sleeve, and the plug-in column is plugged into the plug-in slot; The support arm and the swing arm are rotatably connected via an axle seat and bolts, and the overall structure of the axle seat and the mounting axle frame is consistent, so that the swing arm and the support arm can be deflected accordingly as needed, and the resistance during rotation can be changed by adjusting the tightness of the bolts and nuts, so that the swing arm and the support arm will not be shifted in position after deflection.

[0008] Preferably, a mounting notch is formed through the surface of the plug-in column, a fixing piece is arranged in the mounting notch, and the fixing piece includes two groups of symmetrically distributed plug connectors, the two plug connectors are slidably plugged into the two ends of the mounting notch, and an ejection spring is abutted between the two groups of plug connectors; The ejection spring is placed in the installation slot, and the two plug connectors are respectively inserted by sliding through the two ends of the installation slot, and the inner ends of the two plug connectors are respectively in contact with the ejection springs. When the plug connector can be squeezed, it can be extended into the installation slot, and will automatically pop out under the action of the ejection spring when no external force is applied; The outer wall of the installation sleeve is penetrated by fixing holes at the front and back, and the two groups of plug connectors are plugged into the fixing holes. The inner circle arc structure at the top of the installation sleeve is arranged to form a downward pressing inclined surface, and the extended length of the plug connector is less than the wall thickness of the installation sleeve; When the plug-in column is pressed down, the plug connector can automatically retract backwards along the downward pressing inclined surface, thereby facilitating the installation of the plug-in column, and after the plug-in column is fully inserted, the plug connector pops out under the action of the ejection spring and is plugged into the fixing hole, so that the plug-in column and the mounting sleeve can be connected as one, and the two can be removed together when the mounting bracket is disassembled later.

[0009] Preferably, the wall-hanging fixing mechanism includes an emptying cylinder, a round sleeve is welded on the front end of the emptying cylinder, the round sleeve is connected with the inner cavity of the emptying cylinder, a mounting support is fixed on the surface of the emptying cylinder, and the round sleeve passes through the mounting support and is placed in front of it, a mounting slot is opened above the mounting support, the mounting sleeve is rotatably inserted into the mounting slot, three groups of support frames are arranged in a circular array on the outer ring surface of the emptying cylinder, suction cups are installed on the support frames, the suction cups are connected with the inside of the emptying cylinder through the emptying piece, each group of the suction cups is provided with a group of water-wetting parts, a vacuuming piece and a water bag are slidably arranged inside the emptying cylinder, the water-wetting part is connected with the water bag, a one-way valve two connected with the inside of the emptying cylinder is installed at the tail end, a circular hole is arranged on the front side of the mounting support, the circular hole is sleeved in the circular hole, thereby facilitating the installation of the vacuuming piece.

[0010] Preferably, a connecting air cavity is provided inside the support frame, the connecting air cavity is connected to the inside of the suction cup, an air outlet is provided at one end of the support frame close to the emptying cylinder, the emptying member comprises a one-way valve 1 installed on the emptying cylinder, and the one-way valve 1 is connected to the inside of the emptying cylinder, a connecting hose is connected to the one-way valve 1, and the other end of the connecting hose is connected to the air outlet; One-way valve 1 allows the gas inside the communicating air cavity to only enter the emptying cylinder, while one-way valve 2 allows the gas inside the emptying cylinder to only be discharged outwards. A threaded groove is provided at one end of the support frame away from the emptying cylinder, and a spiral tube is provided on the suction cup. The two are connected by threads, and the communicating air cavity is connected to the inside of the suction cup through the spiral tube, thereby facilitating the discharge of gas inside the suction cup. Each group of the water-wetting parts includes a plurality of spray heads distributed in an annular shape on the suction cup, the spray heads extend into the inner cavity of the suction cup, the liquid inlet holes of the plurality of spray heads are interconnected through an annular water pipe, the annular water pipe is connected with a connecting water pipe, and the other end of the connecting water pipe passes through the emptying cylinder and is connected to the water bag inside the emptying cylinder; When the wall-mounted fixing mechanism is adsorbed on the blackboard, the three suction cups are attached to the blackboard, and the vacuum part is pressed hard, the gas inside the suction cup will be discharged, and then the suction cup can be adsorbed on the blackboard, and when the vacuum part is pressed inward, the piston will also squeeze the water bag, and the liquid inside the water bag will enter the annular water pipe through the connecting water pipe, and then distributed to each sprinkler head, so that a layer of water is attached to the contact surface between the suction cup and the blackboard; After getting wet, it is difficult for outside air to enter the suction cup, so there is no air leakage, and a pressure difference is formed inside and outside the suction cup. In this way, the suction cup can be pressed tightly against the wall or other flat surface using atmospheric pressure. In addition, water can fill the tiny gaps on the suction cup to make the suction tighter. A one-way valve is also provided on the connecting water pipe as needed, so that the water in the water bag can only be discharged outwards and cannot be sucked back in.

[0011] Preferably, the evacuation member comprises a piston slidably arranged in the inner cavity of the evacuation cylinder, a sealing ring is arranged on the outer ring surface of the piston, a pull rod is arranged on the piston, and the pull rod passes through a round sleeve and is placed outside the mounting support.

[0012] Preferably, the air pressure balance mechanism comprises a sealing ring rotatably mounted inside the emptying cylinder, the sealing ring is provided with three groups of communicating notches distributed in an annular shape, a driving arc block is fixed to the inner ring of the sealing ring, a mounting sleeve is mounted on the emptying cylinder, the mounting sleeve is penetrated to form a sliding cavity, the sliding cavity extends into a mounting slot of a mounting support, a driving rod is slidably arranged inside the mounting sleeve, the driving rod is placed inside the emptying cylinder and connected with the driving arc block, and the driving rod extends into the mounting support portion and slides against the outer wall of the mounting sleeve, and the outer diameter of the driving rod is smaller than the inner diameter of the sliding cavity; A hole groove is provided on the mounting support, and the hole groove is connected with the sliding cavity and the mounting slot, so that the driving rod can be partially inserted into the mounting slot, and then when the mounting sleeve is inserted into the mounting slot, the driving rod can be squeezed and moved toward the inside of the emptying cylinder, and then the sealing ring can be pushed to rotate, so that the air port connected to the air pipe is sealed, so that external gas cannot enter, and the vacuum inside the suction cup is ensured; The driving rod is penetrated front and back to form an air intake cavity for air intake, and the outside of the emptying cylinder is provided with three groups of evenly distributed air ports, and the air ports are connected with connecting air pipes, and the other end of the connecting air pipes is connected with the connecting air cavity of the support frame, and the sealing ring can block and seal the air ports or open them as needed, so as to facilitate the entry of external air into the suction cup, so that the air pressure inside and outside the suction cup is balanced, and it is convenient to remove the suction cup; A linear slide groove for guiding is provided on the driving rod, and a linear slider is fixed in the sliding cavity of the mounting sleeve. The linear slider is slidably connected to the linear slide groove, which can guide the movement of the driving rod so that it can only move in a straight line without deflection.

[0013] Preferably, the sealing ring is provided with a plurality of groups of annularly distributed deflection arc grooves, the deflection arc grooves are provided with fixed arc blocks which are slidably arranged, the fixed arc blocks are fixed to the inner wall of the emptying cylinder, and the deflection arc grooves are provided with a reset spring, the reset spring abuts against the inner wall of the deflection arc groove and the fixed arc block, and the reset spring makes the sealing ring have a tendency to deflect, and in the absence of external force, the sealing ring can automatically deflect, and make the communicating notch coincide with the air port, so that the external airflow can enter the suction cup; The inner circle of the driving arc block is provided with a deflection groove, and the driving rod is provided with a driving push rod, and the driving push rod is slidably placed in the deflection groove. The sliding of the driving rod can cause the driving arc block to deflect, thereby causing the sealing ring to deflect, and the deflection of the driving arc block can also cause the driving rod to slide.

[0014] Preferably, the lower end of the mounting sleeve is designed with a conical structure to form an abutment joint, and a rubber sleeve is provided on the outside of the abutment joint. The driving rod and the inclined surface extending into one side of the mounting support form an abutment inclined surface, and the abutment inclined surface is in sliding contact with the outer ring surface of the abutment joint. When the mounting sleeve is pressed downward, it can push the abutment inclined surface to slide inward, thereby causing the driving rod to slide, and the design of the rubber sleeve enables a sealing design between the mounting sleeve and the mounting slot, so that external gas will not enter the exhaust cylinder.

[0015] Beneficial effects of the present invention: 1. By setting up a wall-mounted fixing mechanism, it can be directly fixed on a blackboard or other flat surface, and then the collector can be quickly installed and fixed through the mounting bracket, which improves convenience and facilitates installation and use in different locations and positions as needed; 2. The suction cup is equipped with a vacuuming piece, so that the gas inside the suction cup can be completely extracted. With the water bag and the water-wetting piece, a layer of water is attached to the contact surface between the suction cup and the blackboard. After being wetted with water, it is not easy for the outside air to enter the suction cup, so there is no air leakage, so that a pressure difference is formed inside and outside the suction cup, so that the suction cup can be tightly pressed against the wall or other plane by using atmospheric pressure; 3. By setting an air pressure balance mechanism in the wall-mounted fixing mechanism, and the air pressure balance mechanism is in contact with the mounting bracket, after the mounting bracket is disassembled, external air can automatically enter the suction cup, so that the air pressure inside the suction cup is the same as that outside, and the entire wall-mounted fixing mechanism will automatically slide down under its own weight. This avoids the phenomenon that the wall-mounted fixing mechanism is still fixed after the collector is removed. When the collector is installed again, the wall-mounted fixing mechanism needs to be reinstalled, which avoids the long-term hanging of the wall-mounted fixing mechanism resulting in unstable adsorption and improves safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a wall-mounted audio collection device for music teaching proposed by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the middle mounting bracket, mounting sleeve and wall-mounting fixing mechanism; Figure 3 for Figure 2 A schematic diagram of the structure of the mounting bracket and mounting sleeve; Figure 4 for Figure 2 Front and rear isometric views of the central wall-mounted fixing mechanism; Figure 5 for Figure 4 Schematic diagram of the internal structure of the middle wall-mounted fixing mechanism; Figure 6 for Figure 4 A cross-sectional schematic diagram of the middle wall-mounted fixing mechanism; Figure 7 It is a schematic diagram of the structure of the vacuum part and the water-wetting part in the wall-hanging fixing mechanism; Figure 8 for Figure 5 Schematic diagram of the structure of the middle sealing ring, the driving arc block and the driving rod; Fig. 9 for Figure 8 Schematic diagram of the structure of the middle driving arc block and the driving rod; Fig.10 This is a schematic diagram of the expansion of the arc block obtained in 9.

[0017] Numbers in the figure: 1. Mounting bracket; 11. Support arm; 12. Swing arm; 13. Mounting shaft frame; 14. Plug column; 141. Mounting notch; 15. Fixing piece; 151. Plug connector; 152. Ejection spring; 2. Collector; 21. Mounting screw; 3. Wind shield; 4. Wall fixing mechanism; 41. Emptying cylinder; 411. Round sleeve; 42. Suction cup; 43. Mounting support; 431. Mounting slot; 44. Evacuation piece; 441. Pull rod; 442. Piston; 443. Sealing ring; 45. Support frame; 451. Connecting air chamber; 46. Emptying piece; 461. One-way valve 1; 462. Connecting hose; 47, water bag; 48, water-wetting part; 481, connecting water pipe; 482, annular water pipe; 483, sprinkler head; 49, one-way valve 2; 5, mounting sleeve; 51, fixing hole; 52, abutment joint; 53, downward pressure slope; 6, air pressure balance mechanism; 61, connecting air pipe; 62, sealing ring; 621, connecting gap; 622, deflection arc groove; 63, driving rod; 631, abutment slope; 632, driving push rod; 633, air inlet cavity; 634, linear slide groove; 64, return spring; 65, mounting sleeve; 66, fixed arc block; 67, driving arc block; 671, deflection inclined groove. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1 - Fig.10 A wall-mounted audio collection device for music teaching includes a mounting bracket 1, on which a collector 2 and a windshield 3 are mounted, the windshield 3 is located in front of the collector 2, a mounting sleeve 5 is mounted at the lower end of the mounting bracket 1, a wall-mounted fixing mechanism 4 is rotatably mounted on the mounting sleeve 5, an air pressure balancing mechanism 6 for balancing the internal and external air pressures is arranged in the wall-mounted fixing mechanism 4, and the air pressure balancing mechanism 6 is in contact with the mounting sleeve 5.

[0020] The mounting bracket 1 includes two groups of mounting shaft frames 13, and a support arm 11 is rotatably mounted above the two groups of mounting shaft frames 13 by bolts. The support arm 11 is clamped between the two mounting shaft frames 13, and the bolts pass through the two mounting shaft frames 13 and the support arm 11, and the nuts are loosened on the bolts. There is a certain friction resistance between the support arm 11 and the two mounting shaft frames 13, and they can rotate accordingly. The upper end of the support arm 11 is rotatably mounted with a swing arm 12 through an axle seat, and the collector 2 is arranged at one end of the swing arm 12 away from the support arm 11 by a mounting screw 21, and the wind shield 3 is mounted on the swing arm 12, and a plug-in column 14 is fixed to the lower end of the support arm 11, and a plug-in slot is provided at the upper end of the mounting sleeve 5, and the plug-in column 14 is plugged into the plug-in slot; The support arm 11 is fixed with two axle seats by screws, and the swing arm 12 is clamped between the two axle seats. The bolts pass through the two axle seats and the swing arm 12, and the nuts are loosened on the bolts. There is a certain friction resistance between the swing arm 12 and the two axle seats, and it can rotate accordingly. The overall structure of the axle seats and the mounting axle frame 13 is consistent, so that the swing arm 12 and the support arm 11 can be deflected accordingly as needed, and the resistance during rotation can be changed by adjusting the tightening degree of the bolts and nuts, so that the swing arm 12 and the support arm 11 will not be offset after deflection.

[0021] The surface of the plug-in column 14 is formed with a mounting slot 141, and a fixing member 15 is arranged in the mounting slot 141. The fixing member 15 includes two groups of symmetrically distributed plug connectors 151. The two plug connectors 151 are slidably plugged into the two ends of the mounting slot 141, and an ejection spring 152 is abutted between the two groups of plug connectors 151. The ejection spring 152 is placed in the installation slot 141, and the two plug connectors 151 are respectively slidably inserted through the two ends of the installation slot 141, and the inner ends of the two plug connectors 151 are respectively in contact with the ejection spring 152. When the plug connector 151 can be squeezed, it can be inserted into the installation slot 141, and will automatically pop out under the action of the ejection spring 152 when no external force is applied; The outer wall of the installation sleeve 5 is penetrated by fixing holes 51, and the two sets of plug connectors 151 are plugged into the fixing holes 51. The inner arc structure of the top of the installation sleeve 5 is arranged to form a downward pressing inclined surface 53. The extended length of the plug connector 151 is less than the wall thickness of the installation sleeve 5. When the plug-in column 14 is pressed down, the plug connector 151 can automatically retract backwards along the pressing slope 53, thereby facilitating the installation of the plug-in column 14. After the plug-in column 14 is fully inserted, the plug connector 151 pops out under the action of the ejection spring 152 and is plugged into the fixing hole 51, so that the plug-in column 14 and the mounting sleeve 5 can be connected as a whole, and the two can be removed together when the mounting bracket 1 is disassembled later.

[0022] The wall-mounted fixing mechanism 4 includes an emptying cylinder 41, a circular sleeve 411 is welded at the front center of the emptying cylinder 41, the circular sleeve 411 is connected to the inner cavity of the emptying cylinder 41, a mounting support 43 is fixed on the surface of the emptying cylinder 41, and the circular sleeve 411 passes through the mounting support 43 and is placed in front of it, a mounting slot 431 is opened above the mounting support 43, the mounting sleeve 5 is rotatably inserted into the mounting slot 431, and three groups of support frames 45 are arranged in a circumferential array on the outer surface of the emptying cylinder 41. The support frames A suction cup 42 is installed on 45, and the suction cup 42 is connected with the inside of the emptying cylinder 41 through the emptying piece 46. A group of water-absorbing pieces 48 are arranged on each group of suction cups 42. A vacuuming piece 44 and a water bag 47 are slidably arranged inside the emptying cylinder 41. The water-absorbing piece 48 is connected with the water bag 47. A one-way valve 49 connected with the inside of the emptying cylinder 41 is installed at the tail end of the emptying cylinder 41. A circular hole is arranged on the front side of the mounting support 43, and the circular sleeve 411 is sleeved in the circular hole, so as to facilitate the installation of the vacuuming piece 44.

[0023] A connecting air cavity 451 is provided inside the support frame 45, and the connecting air cavity 451 is connected to the inside of the suction cup 42. An air outlet is provided at one end of the support frame 45 close to the emptying cylinder 41. The emptying member 46 includes a one-way valve 461 installed on the emptying cylinder 41, and the one-way valve 461 is connected to the inside of the emptying cylinder 41. A connecting hose 462 is connected to the one-way valve 461, and the other end of the connecting hose 462 is connected to the air outlet. The one-way valve 1 461 allows the gas inside the communication air chamber 451 to only enter the emptying cylinder 41, while the one-way valve 2 49 allows the gas inside the emptying cylinder 41 to only be discharged outwards. A threaded groove is provided at one end of the support frame 45 away from the emptying cylinder 41, and a spiral tube is provided on the suction cup 42. The two are connected by threads, and the communication air chamber 451 is connected to the inside of the suction cup 42 through the spiral tube, thereby facilitating the discharge of the gas inside the suction cup 42. Each group of water-wetting parts 48 includes a plurality of spray heads 483 distributed in an annular shape on the suction cup 42. The spray heads 483 extend into the inner cavity of the suction cup 42. The liquid inlet holes of the plurality of spray heads 483 are interconnected through an annular water pipe 482. The annular water pipe 482 is connected with a connecting water pipe 481. The other end of the connecting water pipe 481 passes through the emptying cylinder 41 and is connected to the water bag 47 inside the emptying cylinder 41. Before the wall-mounted fixing mechanism 4 is adsorbed on the blackboard or other smooth surface, the piston 442 is pulled to the front end to exhaust the air in the front end of the piston 442, and then the three suction cups 42 are attached to the blackboard, and the vacuuming member 44 is pressed hard, and the gas inside the suction cups 42 will be exhausted. Then, the piston 442 is pumped back and forth several times to exhaust all the gas inside the suction cups 42, so that the suction cups 42 can be adsorbed on the blackboard. When the vacuuming member 44 is pressed inward, the piston 442 will also squeeze the water bag 47, and the liquid inside the water bag 47 will enter the annular water pipe 482 through the connecting water pipe 481, and then be distributed to each sprinkler head 483, so that a layer of water is attached to the contact surface between the suction cup 42 and the blackboard; After being wetted with water, it is not easy for outside air to enter the suction cup 42, so there is no air leakage, and an air pressure difference is formed inside and outside the suction cup 42. In this way, the suction cup 42 can be pressed tightly against the wall or other plane using atmospheric pressure. In addition, water can fill the small gap on the suction cup 42 to make the suction tighter. A one-way valve is also provided on the connecting water pipe 481 as needed, so that the water in the water bag 47 can only be discharged outwards and cannot be sucked back.

[0024] The evacuation member 44 includes a piston 442 slidably disposed in the inner cavity of the evacuation cylinder 41 , a sealing ring 443 is disposed on the outer ring surface of the piston 442 , a pull rod 441 is disposed on the piston 442 , and the pull rod 441 passes through the circular sleeve 411 and is disposed outside the mounting support 43 .

[0025] The air pressure balance mechanism 6 includes a sealing ring 62 rotatably mounted inside the emptying cylinder 41, and three groups of communicating notches 621 distributed in an annular shape are provided on the sealing ring 62. A driving arc block 67 is fixed to the inner ring of the sealing ring 62. A mounting sleeve 65 is installed on the emptying cylinder 41. The mounting sleeve 65 is penetrated to form a sliding cavity, and the sliding cavity extends into the mounting slot 431 of the mounting support 43. A driving rod 63 is slidably arranged in the mounting sleeve 65. The driving rod 63 is placed in the inner part of the emptying cylinder 41 and connected to the driving arc block 67. The driving rod 63 extends into the mounting support 43 and slides against the outer wall of the mounting sleeve 5. The mounting support 43 is provided with a hole groove, which is connected with the sliding cavity and the mounting slot 431, so that the driving rod 63 can be partially inserted into the mounting slot 431, and then when the mounting sleeve 5 is inserted into the mounting slot 431, the driving rod 63 can be squeezed and moved toward the inside of the emptying cylinder 41, and then the sealing ring 62 can be pushed to rotate, so that the air port connected to the air pipe 61 is sealed, so that the external gas cannot enter, and the vacuum inside the suction cup 42 is ensured; The driving rod 63 is penetrated by an air inlet cavity 633 for air intake, and three groups of evenly distributed air ports are opened on the outside of the emptying cylinder 41. The air ports are connected with a connecting air pipe 61, and the other end of the connecting air pipe 61 is connected with the connecting air cavity 451 of the support frame 45. The sealing ring 62 can block and seal the air port or open it as needed, so that the external air can enter the suction cup 42 through the air inlet cavity 633 and the air port, so that the air pressure inside and outside the suction cup 42 is balanced, which is convenient for removing the suction cup 42; A linear slide groove 634 for guiding is provided on the driving rod 63, and a linear slider is fixed in the sliding cavity of the mounting sleeve 65. The linear slider is slidably connected to the linear slide groove 634, which can guide the movement of the driving rod 63 so that it can only move in a straight line without deflection.

[0026] The sealing ring 62 is provided with a plurality of annularly distributed deflection arc grooves 622, and a fixed arc block 66 is slidably arranged in the deflection arc groove 622, and the fixed arc block 66 is fixed to the inner wall of the emptying tube 41, and a return spring 64 is arranged in the deflection arc groove 622, and the return spring 64 abuts against the inner wall of the deflection arc groove 622 and the fixed arc block 66, and the return spring 64 makes the sealing ring 62 have a deflection tendency, and in the absence of external force, the sealing ring 62 can automatically deflect, and make the communicating notch 621 coincide with the air port, so that the external airflow can enter the suction cup 42; The inner circle of the driving arc block 67 is provided with a deflection groove 671, and the driving rod 63 is provided with a driving push rod 632. The driving push rod 632 is slidably placed in the deflection groove 671. The sliding of the driving rod 63 can deflect the driving arc block 67, thereby deflecting the sealing ring 62, and the deflection of the driving arc block 67 can also cause the driving rod 63 to slide.

[0027] The lower end of the mounting sleeve 5 is designed with a conical structure to form a butt joint 52, and a rubber sleeve is arranged on the outside of the butt joint 52. The driving rod 63 and the inclined surface extending into the side of the mounting support 43 are designed to form an abutting inclined surface 631. The abutting inclined surface 631 is in sliding contact with the outer ring surface of the butt joint 52. When the mounting sleeve 5 is pressed downward, it can push the abutting inclined surface 631 to slide inward, thereby causing the driving rod 63 to slide. The design of the rubber sleeve enables a sealing design between the mounting sleeve 5 and the mounting slot 431, so that external gas will not enter the exhaust cylinder 41.

[0028] Working principle: When performing wall-mounted installation, first pull the pull rod 441 outward and make the piston 442 close to the sealing ring 62. At this time, the volume between the piston 442 and the sealing ring 62 is small, the gas is discharged, and the gas is as small as possible. Then, insert the installation sleeve 5 into the installation slot 431 on the installation support 43. When the installation sleeve 5 is inserted into the installation slot 431, the outer ring surface of the installation sleeve 5 will contact the abutting inclined surface 631 of the driving rod 63 and make the driving rod 63 move inward. Since the driving rod 63 is provided with a driving push rod 632, and the driving push rod 632 is slidably placed in the deflection inclined groove 671 of the driving arc block 67, the driving arc block 67 can be deflected, and the sealing ring 62 will rotate accordingly. The sealing ring 62 will block and seal the air port connecting the air pipe 61, so that external gas cannot enter, thereby ensuring the vacuum inside the suction cup 42; Then, three suction cups 42 are attached to the blackboard, and the evacuation member 44 is pressed hard, so that the gas inside the suction cup 42 will be discharged, and the suction cup 42 can be adsorbed on the blackboard. When the evacuation member 44 is pressed inward, the piston 442 will also squeeze the water bag 47, and the liquid inside the water bag 47 will enter the annular water pipe 482 through the connecting water pipe 481, and then be distributed to each sprinkler head 483, so that a layer of water is attached to the contact surface between the suction cup 42 and the blackboard, and the suction cup 42 is tightly pressed against the wall or other plane by atmospheric pressure; After the suction cup 42 is adsorbed onto the blackboard or the gas plane, the piston 442 is pulled back and forth several times by the pull rod 441. When the piston 442 moves inward, the gas inside will be discharged outward through the one-way valve 49. When it is pulled outward, the gas inside the suction cup 42 will be sucked into the emptying cylinder 41. In this way, the gas inside the suction cup 42 can be evacuated and discharged several times, thereby ensuring the firmness after installation. Then, the plug-in column 14 at the lower end of the mounting bracket 1 fixed with the collector 2 can be plugged into the mounting sleeve 5. At this time, the wall-mounted installation of the entire collector 2 can be completed; When disassembly is required, the mounting bracket 1 is first pulled out as a whole. Since the plug-in column 14 and the fixing member 15 at the lower end of the mounting bracket 1 are connected to the mounting sleeve 5, when the mounting bracket 1 is pulled out upward, the mounting sleeve 5 will also be taken out. After the mounting sleeve 5 is taken out, under the action of the return spring 64, the return spring 64 will push the sealing ring 62 to rotate accordingly, and the driving rod 63 will also extend into the mounting slot 431. At this time, the connecting gap 621 coincides with the air port, so that the external airflow can enter the suction cup 42, and there is a gap between the driving rod 63 and the sliding cavity, which facilitates the external gas to enter the emptying tube 41. Then, the gas enters the suction cup 42 through the air port and the connecting air pipe 61, so that the air pressure in the suction cup 42 is the same as that outside. The entire wall-hanging fixing mechanism 4 will automatically slide down under its own weight. In this way, it is avoided that the wall-hanging fixing mechanism 4 is still fixed after the collector 2 is removed. When the collector 2 is installed again, the wall-hanging fixing mechanism 4 needs to be reinstalled, which avoids the wall-hanging fixing mechanism 4 from being suspended for a long time, resulting in unstable adsorption, thereby improving safety.

[0029] By setting the wall-hanging fixing mechanism 4, it can be directly fixed on a blackboard or other flat surface, and then the collector 2 can be quickly installed and fixed through the mounting bracket 1, which improves convenience and facilitates installation and use at different locations and positions as needed; The suction cup 42 is provided with a vacuum element 44, so that the gas inside the suction cup 42 can be completely extracted, and the water bag 47 and the water-wetting element 48 are provided, so that a layer of water is attached to the contact surface between the suction cup 42 and the blackboard. After being wetted with water, it is difficult for the outside air to enter the suction cup 42, so that there is no air leakage, and an air pressure difference is formed inside and outside the suction cup 42, so that the suction cup 42 can be tightly pressed against the wall or other plane by using the atmospheric pressure; By arranging an air pressure balancing mechanism 6 in the wall-hanging fixing mechanism 4, and the air pressure balancing mechanism 6 is in contact with the mounting bracket 1, after the mounting bracket 1 is disassembled, external air can automatically enter the inside of the suction cup 42, so that the air pressure inside the suction cup 42 is the same as that outside, and the entire wall-hanging fixing mechanism 4 will automatically slide down under its own weight, thereby avoiding the phenomenon that the wall-hanging fixing mechanism 4 is still fixed after the collector 2 is removed, and the wall-hanging fixing mechanism 4 needs to be reinstalled when the collector 2 is installed again, thereby avoiding the wall-hanging fixing mechanism 4 from being suspended for a long time resulting in unstable adsorption, thereby improving safety.

[0030] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wall-mounted audio collection device for music teaching, characterized in that: The invention comprises a mounting bracket (1), a collector (2) and a wind shield (3) being mounted on the mounting bracket (1), the wind shield (3) being located in front of the collector (2), a mounting sleeve (5) being mounted at the lower end of the mounting bracket (1), a wall-mounted fixing mechanism (4) being rotatably mounted on the mounting sleeve (5), a pressure balancing mechanism (6) for balancing internal and external air pressure being arranged in the wall-mounted fixing mechanism (4), and the pressure balancing mechanism (6) being in contact with the mounting sleeve (5).

2. A wall-mounted audio collection device for music teaching according to claim 1, characterized in that: The mounting bracket (1) comprises two groups of mounting shaft frames (13), support arms (11) are rotatably mounted on the top of the two groups of mounting shaft frames (13) by means of bolts, a swing arm (12) is rotatably mounted on the upper end of the support arm (11) by means of a shaft seat, the collector (2) is arranged at one end of the swing arm (12) away from the support arm (11) by means of a mounting screw (21), the wind shield (3) is mounted on the swing arm (12), a plug-in column (14) is fixed to the lower end of the support arm (11), a plug-in slot is provided at the upper end of the mounting sleeve (5), and the plug-in column (14) is plugged into the plug-in slot.

3. A wall-mounted audio collection device for music teaching according to claim 2, characterized in that: A mounting notch (141) is formed through the surface of the plug-in column (14), a fixing member (15) is arranged in the mounting notch (141), and the fixing member (15) comprises two groups of symmetrically distributed plug connectors (151), the two plug connectors (151) are slidably plugged into the two ends of the mounting notch (141), and an ejection spring (152) is abutted between the two groups of plug connectors (151); The outer wall of the installation sleeve (5) is penetrated by fixing holes (51) at the front and rear, and the two groups of plug connectors (151) are plugged into the fixing holes (51). The inner arc-shaped structure at the top of the installation sleeve (5) is arranged to form a downward pressing inclined surface (53), and the extended length of the plug connector (151) is less than the wall thickness of the installation sleeve (5).

4. The wall-mounted audio collection device for music teaching according to claim 1, characterized in that: The wall-hanging fixing mechanism (4) comprises an emptying cylinder (41), a round sleeve (411) is welded to the front end of the emptying cylinder (41), the round sleeve (411) is communicated with the inner cavity of the emptying cylinder (41), a mounting support (43) is fixed to the surface of the emptying cylinder (41), and the round sleeve (411) passes through the mounting support (43) and is placed in front of the mounting support; A mounting slot (431) is provided above the mounting support (43), and the mounting sleeve (5) is rotatably inserted into the mounting slot (431). Three groups of support frames (45) are arranged in a circular array on the outer surface of the emptying cylinder (41), and suction cups (42) are installed on the support frames (45). The suction cups (42) are connected to the inside of the emptying cylinder (41) through the emptying member (46). Each group of suction cups (42) is provided with a group of water-absorbing members (48). An evacuation member (44) and a water bag (47) are slidably arranged inside the emptying cylinder (41), and the water-absorbing member (48) is connected to the water bag (47). A second one-way valve (49) connected to the inside of the emptying cylinder (41) is installed at the rear end of the emptying cylinder (41).

5. A wall-mounted audio collection device for music teaching according to claim 4, characterized in that: A communicating air cavity (451) is provided inside the support frame (45), and the communicating air cavity (451) is communicated with the inside of the suction cup (42); an air outlet is provided at one end of the support frame (45) close to the emptying cylinder (41); the emptying member (46) comprises a one-way valve (461) installed on the emptying cylinder (41), and the one-way valve (461) is communicated with the inside of the emptying cylinder (41); a connecting hose (462) is connected to the one-way valve (461), and the other end of the connecting hose (462) is connected to the air outlet; Each group of the water-soaking members (48) comprises a plurality of spray heads (483) distributed in an annular shape on the suction cup (42), the spray heads (483) extending into the inner cavity of the suction cup (42), the liquid inlet holes of the plurality of spray heads (483) being interconnected via an annular water pipe (482), the annular water pipe (482) being connected to a connecting water pipe (481), the other end of the connecting water pipe (481) passing through the emptying cylinder (41) and being connected to the water bag (47) inside the emptying cylinder (41).

6. A wall-mounted audio collection device for music teaching according to claim 4, characterized in that: The evacuation member (44) comprises a piston (442) slidably arranged in the inner cavity of the evacuation cylinder (41); a sealing ring (443) is arranged on the outer ring surface of the piston (442); a pull rod (441) is arranged on the piston (442); and the pull rod (441) passes through a round sleeve and is placed outside the mounting support (43).

7. The wall-mounted audio collection device for music teaching according to claim 4, characterized in that: The air pressure balance mechanism (6) comprises a sealing ring (62) rotatably mounted inside the emptying cylinder (41), the sealing ring (62) being provided with three groups of communicating notches (621) distributed in an annular shape, a driving arc block (67) being fixed to the inner ring of the sealing ring (62), a mounting sleeve (65) being mounted on the emptying cylinder (41), the mounting sleeve (65) being arranged through to form a sliding cavity, the sliding cavity extending into a mounting slot (431) of a mounting support (43), a driving rod (63) being slidably arranged inside the mounting sleeve (65), the driving rod (63) being arranged inside the emptying cylinder (41) and connected to the driving arc block (67), and the driving rod (63) extending into the mounting support (43) and slidably abutting against the outer wall of the mounting sleeve (5), the outer diameter of the driving rod (63) being smaller than the inner diameter of the sliding cavity; The driving rod (63) is penetrated from front to back to form an air intake cavity (633) for air intake, and the exhaust cylinder (41) is provided with three groups of evenly distributed air ports on the outside, and the air ports are connected to a connecting air pipe (61), and the other end of the connecting air pipe (61) is connected to the connecting air cavity (451) of the support frame (45); The driving rod (63) is provided with a linear slide groove (634) for guiding, and a linear slider is fixed in the sliding cavity of the mounting sleeve (65), and the linear slider is slidably connected to the linear slide groove (634).

8. The wall-mounted audio collection device for music teaching according to claim 7, characterized in that: The sealing ring (62) is provided with a plurality of groups of annularly distributed deflection arc grooves (622), a fixed arc block (66) is slidably arranged in the deflection arc groove (622), the fixed arc block (66) is fixed to the inner wall of the emptying cylinder (41), and a return spring (64) is arranged in the deflection arc groove (622), the return spring (64) is in contact with the inner wall of the deflection arc groove (622) and the fixed arc block (66); The inner ring of the driving arc block (67) is provided with a deflection inclined groove (671), and the driving rod (63) is provided with a driving push rod (632), and the driving push rod (632) is slidably placed in the deflection inclined groove (671).

9. A wall-mounted audio collection device for music teaching according to claim 8, characterized in that: The lower end of the mounting sleeve (5) is designed with a conical structure to form an abutment joint (52), and a rubber sleeve is provided on the outside of the abutment joint (52). The driving rod (63) and the inclined surface extending into the mounting support (43) are designed to form an abutment inclined surface (631), and the abutment inclined surface (631) is in sliding contact with the outer ring surface of the abutment joint (52).

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