CN112361171A - Multifunctional audio-video device for teaching - Google Patents

Multifunctional audio-video device for teaching Download PDF

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Publication number
CN112361171A
CN112361171A CN202011323775.4A CN202011323775A CN112361171A CN 112361171 A CN112361171 A CN 112361171A CN 202011323775 A CN202011323775 A CN 202011323775A CN 112361171 A CN112361171 A CN 112361171A
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China
Prior art keywords
rod
fixedly connected
audio
shell
visual
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CN202011323775.4A
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Chinese (zh)
Inventor
王华科
武蕾
姜琳琳
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Individual
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Individual
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Priority to CN202011323775.4A priority Critical patent/CN112361171A/en
Publication of CN112361171A publication Critical patent/CN112361171A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • F16M11/28—Undercarriages for supports with one single telescoping pillar
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/08—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
    • G09B5/065—Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/08—Foot or support base

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Toys (AREA)

Abstract

The invention discloses a multifunctional audio-visual device for teaching, which belongs to the technical field of audio-visual devices and comprises a base, wherein the left side of the top end of the base is fixedly connected with a shell a, a positive and negative motor is arranged in the shell a, one side of the positive and negative motor is fixedly connected with a rotating shaft a, the rotating shaft a penetrates through one side of the shell a, the power input end of the rotating shaft a is electrically connected with the power output end of the positive and negative motor, and one side of the rotating shaft a is fixedly connected with a rotating rod. The invention has the automatic moving structure to realize the horizontal automatic movement of the acoustic image device, thus conveniently and quickly moving the acoustic image device and solving the problem of inconvenient movement in use, and simultaneously, the lifting adjusting structure can adjust the height of the acoustic image device, and the rotating shaft at the bottom of the acoustic image device can rotate the acoustic image device by three hundred sixty degrees, thus the acoustic image device can be conveniently adjusted in use, and the device has simple integral operation and strong practicability.

Description

Multifunctional audio-video device for teaching
Technical Field
The invention relates to the technical field of audio-video devices, in particular to a multifunctional audio-video device for teaching.
Background
The audio-visual teaching device is composed of a recording playing device and a picture demonstrating device, and at present, the existing audio-visual teaching device has some defects, such as the defects of the audio-visual teaching device; the existing audio-video device for teaching can not adjust the height of the audio-video device according to the requirements of different placing positions, thereby reducing the application range of the audio-video device and the flexibility of the audio-video device.
Patent No. CN 105741621 a discloses a multifunctional audio-visual device for teaching. The multifunctional audio-visual device for teaching of the invention prepares the materials to be learned, memorized and understood into audio-visual data, and stores the audio-visual data in the mobile terminal in the form of the audio-visual data; when the wireless household digital transmission module is used, audio and video teaching materials are directly played through the mobile terminal, and signals are transmitted to the wireless household digital transmission module through the data line; the wireless home digital sending module sends the wireless home digital receiving module; the wireless home digital sending module sends the audio-video signal to a display for displaying; simple structure, can directly assemble, can once only connect in place.
The multifunctional audio-video device for teaching in the prior art has the following disadvantages: 1. automatic movement in the horizontal direction may not be achieved; 2. the multifunctional audio-video device for teaching is provided for realizing single function without a lifting adjusting structure.
Disclosure of Invention
The invention provides a multifunctional audio-visual apparatus for teaching, which has an automatic moving structure to realize the horizontal automatic movement of an audio-visual apparatus, so that the audio-visual apparatus can be conveniently and quickly moved, and the problem of inconvenient movement in use is solved.
The specific technical scheme provided by the invention is as follows:
the invention provides a multifunctional audio-visual device for teaching, which comprises a base, wherein the left side of the top end of the base is fixedly connected with a shell a, a forward and reverse motor is arranged in the shell a, one side of the forward and reverse motor is fixedly connected with a rotating shaft a, the rotating shaft a penetrates through one side of the shell a, the power input end of the rotating shaft a is electrically connected with the power output end of the forward and reverse motor, one side of the rotating shaft a is fixedly connected with a rotating rod, one side of the rotating rod is provided with a screw rod, one side of the screw rod penetrates through the center of the inner part of a moving block, one side of the moving block is provided with a threaded hole, the threaded hole is in threaded connection with the screw rod, the upper end and the lower end of one side of the moving block are provided with through holes a, two groups of through holes a are arranged in the through holes, base top right fixedly connected with casing and casing one side fixedly connected with horizontal pole an and horizontal pole b, shell b one side is run through to have axis of rotation and axis of rotation one end to install the screw rod, movable block top fixedly connected with loop bar, the loop bar top has run through the telescopic link, through-hole b and through-hole b are provided with three groups all seted up on both sides about the loop bar, roller c is all installed to both sides lower extreme around the loop bar outside, roller c fixed surface is connected with connecting rod b, connecting rod b one end runs through in roller b one side, roller b opposite side runs through in connecting rod an one end, the roller a surface is installed at the roller a other end.
Optionally, a pressing rod penetrates through the through hole b, the pressing rod penetrates through the shell b, and the shell b is fixedly connected to the bottom of the telescopic rod.
Optionally, the inside fixedly connected with baffle and the baffle of shell b are provided with two sets, shell b bottom fixedly connected with bracing piece.
Optionally, a spring is fixedly connected between the two groups of baffle surfaces.
Optionally, the top end of the telescopic rod is fixedly connected with a rotating shaft c, and a rotating rod penetrates through the top end of the rotating shaft c.
Optionally, the top end of the rotating rod penetrates through the bottom of the rotating shaft b, and a sound imaging device is installed at the top end of the rotating shaft b.
Optionally, a wire inserting groove is formed in the left side of the audio-video device, the projection head is installed on the right side of the audio-video device, and a loudspeaker is installed at the top end of the audio-video device.
Optionally, the power input end of the positive and negative motor is electrically connected with the power output end of an external power supply.
The invention has the following beneficial effects:
the embodiment of the invention provides a multifunctional audio-video device for teaching, which comprises:
1. the positive and negative motors are connected with an external power supply, the positive and negative motors work to rotate forwards after the positive and negative motors are connected with an external power supply, the rotation of the positive and negative motors drives the rotation of a rotating shaft fixedly connected to one side of the positive and negative motors and penetrates through one side of a shell a after the positive and negative motors rotate reversely, the rotation of the rotating shaft drives the rotation of a rotating rod fixedly connected to one side of the rotating shaft, the rotation of the rotating rod drives a screw rod arranged on one side of the rotating rod to rotate, the screw rod penetrates through a movable block through a threaded hole formed in the center of one side of the movable block, one end of the screw rod is arranged in the rotating shaft, a cross rod a and a cross rod b are fixedly connected between a shell body penetrating through the rotating shaft and the shell a, and the cross rod a and the cross, reach the effect of steady movement simultaneously through horizontal pole a and horizontal pole b, the removal of movable block just can make the audio-visual ware realize removing, just can realize the removal in opposite direction with positive and negative motor reversal, wait to remove after the good position that the movable block removed that the audio-visual ware removed the good position after break positive and negative motor and external switch-on, the device has the automatic movement structure and can make the audio-visual ware realize the automatic movement on the level, just so can make things convenient for, swiftly remove the audio-visual ware, the problem of inconvenient removal when having solved the use.
2. The pressing rods which penetrate through the left side and the right side of the sleeve rod fixedly connected to the top end of the moving block through the through holes b are extruded by hands, then the pressing rods can retract into the shell b and have the effect of extrusion force on the springs arranged between the baffle plates fixedly connected to one side of the pressing rods, when the pressing rods retract into the sleeve rod, the telescopic rods penetrating through the top end of the sleeve rod can move upwards, and the bottom of the telescopic rods are fixedly connected with the shell b, so that when the telescopic rods move upwards, the pressing rods can rebound to enter the through holes b due to the elastic force generated by the extrusion force applied to the springs, meanwhile, the baffle plates can play a role of blocking the rebound of the springs, when the pressing rods enter the through holes b, the height of the telescopic rods can be adjusted, and meanwhile, in the moving process of the telescopic rods, because the connecting rods a are arranged on, the connecting rod b is installed on one side of a roller shaft c on the surface of the loop bar, so the connecting rod a and the connecting rod b can rotate along with the movement of the telescopic rod on the roller shaft b, the connecting rod a and the connecting rod b can support and stabilize the movement of the telescopic rod, after the height of the telescopic rod is adjusted, the rotating shaft c is fixedly connected to the bottom end of the telescopic rod and connected with the rotating shaft b through the rotating rod, the rotating shaft b can be rotated to enable the acoustic image device installed at the top end of the rotating shaft b to rotate by three hundred sixties, the device is provided with a lifting adjusting structure to adjust the height of the acoustic image device, the bottom of the acoustic image device is provided with the rotating shaft to rotate by three hundred sixties of the acoustic image device, and therefore the acoustic image device can be conveniently adjusted when in use, and the.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a multifunctional audio-visual apparatus for teaching according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the audio-visual apparatus for multi-functional teaching of the present invention at A;
fig. 3 is an enlarged schematic structural view of a multifunctional audio-visual teaching apparatus according to an embodiment of the present invention at a position B;
fig. 4 is a side view of a loop bar of a multi-functional audio-visual teaching apparatus according to an embodiment of the present invention.
In the figure: 1. a base; 2. a housing a; 3. a positive and negative motor; 4. a rotation axis a; 5. rotating the rod; 6. a cross bar a; 7. a loop bar; 8. a telescopic rod; 9. a sound imaging device; 10. a wire inserting groove; 11. a speaker; 12. a projection head; 13. a rotation axis b; 14. rotating the rod; 15. a rotation axis c; 16. a roll shaft a; 17. a connecting rod a; 18. a roll shaft b; 19. a connecting rod b; 20. a roll shaft c; 21. a housing; 22. a moving block; 23. a screw; 24. a cross bar b; 25. a support bar; 26; a spring; 27; a housing b; 28. a pressing lever; 29. a baffle plate; 30. a through hole a; 31. a threaded hole; 32. a through hole b; 33. and rotating the shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An audio-visual apparatus for multi-purpose teaching according to an embodiment of the present invention will be described in detail with reference to fig. 1 to 4.
Referring to fig. 1 to 4, a multifunctional audio-visual apparatus for teaching according to an embodiment of the present invention includes a base 1, a housing a2 is fixedly connected to the left side of the top end of the base 1, a forward/reverse motor 3 is installed inside the housing a2, a rotation shaft a4 is fixedly connected to one side of the forward/reverse motor 3, a rotation shaft a4 penetrates through one side of the housing a2, a power input end of the rotation shaft a4 is electrically connected to a power output end of the forward/reverse motor 3, a rotation rod 5 is fixedly connected to one side of the rotation shaft a4, a screw 23 is installed to one side of the rotation rod 5, one side of the screw 23 penetrates through the center inside a moving block 22, a threaded hole 31 is formed at one side of the moving block 22, the threaded hole 31 is in threaded connection with the screw 23, through holes a30 and two sets of through holes a30 are formed at both the upper and lower ends of one side of the moving block 22, the other set of through-hole a30 is inside to run through horizontal pole b24 and horizontal pole b24 one end fixed connection in shell a2 one side, base 1 top right fixedly connected with casing 21 and casing 21 one side fixedly connected with horizontal pole a6 and horizontal pole b24, shell b27 one side is run through to have axis of rotation 33 and axis of rotation 33 one end and is installed screw 23, moving block 22 top fixedly connected with loop bar 7, telescopic link 8 has been run through to the loop bar 7 top, through-hole b32 and through-hole b32 are all seted up on both sides about loop bar 7 and are provided with three sets, roller c20 is all installed to loop bar 7 outside both sides lower extreme around, roller c20 fixed surface is connected with connecting rod b19, connecting rod b19 one end runs through on roller b18 one side, roller b18 opposite side runs through at connecting rod a17 one end, the connecting rod a17 other end is installed on roller a16 surface.
For example, the device is placed on a flat ground through the base 1, after the device is placed, the forward and reverse motor 3 is firstly connected with an external power supply, after the forward and reverse motor 3 is connected with an external power supply, the reverse motor 3 is firstly enabled to work to rotate forward, after the forward and reverse motor 3 rotates forward, the rotation of the forward and reverse motor 3 drives the rotation shaft a4 fixedly connected to one side of the forward and reverse motor 3 and penetrating through one side of the shell a2 to rotate, the rotation of the rotation shaft a4 drives the rotation of the rotation rod 5 fixedly connected to one side of the rotation shaft a4, the rotation of the rotation rod 5 drives the rotation of the screw 23 arranged on one side of the rotation rod 5, the screw 23 penetrates through the moving block 22 through the threaded hole 31 arranged in the center of one side of the moving block 22, one end of the screw 23 is arranged inside the rotation shaft 33, the cross rod a6 and the cross rod b 7 are fixedly connected between the shell 21 penetrating through the rotation shaft 33 and the shell a 86, therefore, the rotation of the screw 23 can make the moving block 22 penetrating through the surface of the screw 23 through the threaded hole 31 realize the movement in the horizontal direction, and simultaneously, the effect of smooth movement is achieved through the cross bar a6 and the cross bar b24, the movement of the moving block 22 can make the acoustic imaging device 9 realize the movement, the forward and reverse motor 3 can realize the movement in the opposite direction when rotating reversely, after the moving block 22 moves to the right position, namely the acoustic imaging device 9 moves to the right position, the forward and reverse motor 3 is disconnected from the outside, then the pressing rods 28 penetrating through the left and right sides of the loop bar 7 fixedly connected to the top end of the moving block 22 through the through holes b32 are pressed by hands, then the pressing rods 28 retract into the shell b27 and have the function of pressing force on the spring 26 installed between the baffle plates 29 fixedly connected to one side of the pressing rods 28, when the pressing rods 28 retract into the loop bar 7, the telescopic rod 8 penetrating through the top end of the loop bar 7 can move upwards, therefore, when the telescopic rod 8 moves upwards, the elastic force generated by the extrusion force applied to the spring 26 when the telescopic rod 8 meets the through hole b32 again causes the pressing rod 28 to rebound and enter the through hole b32, meanwhile, the baffle 29 can block the rebound of the spring 26, the height of the telescopic rod 8 can be adjusted when the pressing rod 28 enters the through hole b32, and meanwhile, in the moving process of the telescopic rod 8, because the connecting rod a17 is installed on the side of the roller shaft a16 fixedly connected to the surface of the telescopic rod 8, and the connecting rod b19 is installed on the side of the roller shaft c20 fixedly connected to the surface of the sleeve rod 7, the connecting rod a17 and the connecting rod b19 can rotate along with the movement of the telescopic rod 8 on the roller shaft b18, so that the connecting rod a17 and the connecting rod b19 can.
Referring to fig. 2, a pressing rod 28 penetrates through the through hole b32, the pressing rod 28 penetrates through the housing b27, and the housing b27 is fixedly connected to the bottom of the telescopic rod 8.
Illustratively, the pressing rods 28 penetrating through the left and right sides of the loop bar 7 fixedly coupled to the top end of the moving block 22 through the through holes b32 are pressed by hand, and then the pressing rods 28 are retracted into the housing b27 while having a pressing force on the springs 26 installed between the stoppers 29 fixedly coupled to one side of the pressing rods 28.
Referring to fig. 2, baffles 29 are fixedly connected inside the casing b27, two groups of baffles 29 are arranged, and support rods 25 are fixedly connected to the bottom of the casing b 27.
Illustratively, the baffle 29 will act as a stop against the spring 26 bounce and the support bar 25 will act as a support for the bottom of the enclosure b 27.
Referring to fig. 2, a spring 26 is fixedly connected between the surfaces of the two sets of baffles 29.
For example, when the telescopic rod 8 moves upward and meets the through hole b32, the pressing rod 28 rebounds into the through hole b32 due to the elastic force of the spring 26.
Referring to fig. 1, a rotating shaft c15 is fixedly connected to the top end of the telescopic rod 8, and a rotating rod 14 penetrates through the top end of the rotating shaft c 15.
Illustratively, the rotating shaft c15 is fixedly connected to the bottom end of the telescopic rod 8 and the rotating shaft c15 is connected to the rotating shaft b13 by the rotating lever 14.
Referring to fig. 1, the top end of the rotating lever 14 penetrates the bottom of the rotating shaft b13, and the sound imaging device 9 is installed on the top end of the rotating shaft b 13.
Illustratively, turning the rotation shaft b13 makes it possible to rotate the acoustic imager 9 mounted at the tip of the rotation shaft b13 by three hundred and sixty degrees.
Referring to fig. 1, a plug wire slot 10 is opened on the left side of the audio-visual device 9, a projection head 12 is installed on the right side of the audio-visual device 9, and a speaker 11 is installed on the top end of the audio-visual device 9.
For example, the external power is connected through the plug wire slot 10 opened on the audio-visual device 9, and then the picture can be projected through the projection head 12 and the sound can be emitted through the speaker 11.
Referring to fig. 1, a power input end of the positive and negative motor 3 is electrically connected with a power output end of an external power supply.
Illustratively, the positive and negative motor 3 is connected with an external power supply, and the positive and negative motor 3 rotates to play a role.
When the device is used, the device is placed on a flat ground through the base 1, the forward and reverse motor 3 is firstly connected with an external power supply after the device is placed, the reverse motor 3 is firstly enabled to work to rotate forwards after the forward and reverse motor 3 is connected with an external power supply, the rotating shaft a4 fixedly connected to one side of the forward and reverse motor 3 and penetrating through one side of the shell a2 is driven to rotate by the rotation of the forward and reverse motor 3 after the forward and reverse motor 3 rotates forwards, the rotating shaft a4 fixedly connected to one side of the rotating shaft a4 is driven to rotate by the rotation of the rotating shaft a4, the screw 23 installed on one side of the rotating shaft 5 is driven to rotate by the rotation of the rotating shaft 5, the screw 23 penetrates through the moving block 22 through the threaded hole 31 formed in the center of one side of the moving block 22, one end of the screw 23 is installed inside the rotating shaft 33, the cross rod a6, the cross rod b 7 and the cross rod a6 and the cross rod b, therefore, the rotation of the screw 23 can make the moving block 22 penetrating through the surface of the screw 23 through the threaded hole 31 realize the movement in the horizontal direction, and simultaneously, the effect of smooth movement is achieved through the cross bar a6 and the cross bar b24, the movement of the moving block 22 can make the acoustic imaging device 9 realize the movement, the forward and reverse motor 3 can realize the movement in the opposite direction when rotating reversely, after the moving block 22 moves to the right position, namely the acoustic imaging device 9 moves to the right position, the forward and reverse motor 3 is disconnected from the outside, then the pressing rods 28 penetrating through the left and right sides of the loop bar 7 fixedly connected to the top end of the moving block 22 through the through holes b32 are pressed by hands, then the pressing rods 28 retract into the shell b27 and have the function of pressing force on the spring 26 installed between the baffle plates 29 fixedly connected to one side of the pressing rods 28, when the pressing rods 28 retract into the loop bar 7, the telescopic rod 8 penetrating through the top end of the loop bar 7 can move upwards, therefore, when the telescopic rod 8 moves upwards and meets the through hole b32 again, a rebound force is generated due to the extrusion force received by the spring 26, so that the pressing rod 28 rebounds to enter the through hole b32, meanwhile, the baffle 29 can block the rebounding of the spring 26, the height of the telescopic rod 8 can be adjusted when the pressing rod 28 enters the through hole b32, meanwhile, during the moving process of the telescopic rod 8, because the connecting rod a17 is installed on the side of the roller shaft a16 fixedly connected to the surface of the telescopic rod 8, and the connecting rod b19 is installed on the side of the roller shaft c20 fixedly connected to the surface of the sleeve 7, the connecting rod 539a 17 and the connecting rod b 7 can rotate on the roller shaft b18 along with the movement of the telescopic rod 8, so that the connecting rod a17 and the connecting rod b 25 can support and stabilize the movement of the telescopic rod 738, and because the rotating shaft 737c 3 is fixedly connected to the bottom end of the telescopic rod 8 after the height of, therefore, the sound imaging device 9 mounted at the top end of the rotating shaft b13 can rotate three hundred sixty degrees by rotating the rotating shaft b13, after the sound imaging device 9 is rotated to a proper position, an external power supply can be connected through the plug wire slot 10 formed in the sound imaging device 9, then a picture can be projected through the projection head 12, and sound can be emitted through the loudspeaker 11, after the playing is finished, the external power supply is pulled out of the plug wire slot 10, the connection between the sound imaging device 9 and the external power supply can be disconnected, and then the next use is waited, wherein the positive and negative motor 3 is a conventional prior art product, the model of the positive and negative motor is 5IK40GN-C, and the internal structure is not elucidated.
The invention is a multi-functional teaching audio-visual device, including 1, base; 2. a housing a; 3. a positive and negative motor; 4. a rotation axis a; 5. rotating the rod; 6. a cross bar a; 7. a loop bar; 8. a telescopic rod; 9. a sound imaging device; 10. a wire inserting groove; 11. a speaker; 12. a projection head; 13. a rotation axis b; 14. rotating the rod; 15. a rotation axis c; 16. a roll shaft a; 17. a connecting rod a; 18. a roll shaft b; 19. a connecting rod b; 20. a roll shaft c; 21. a housing; 22. a moving block; 23. a screw; 24. a cross bar b; 25. a support bar; 26; a spring; 27; a housing b; 28. a pressing lever; 29. a baffle plate; 30. a through hole a; 31. a threaded hole; 32. a through hole b; 33. the rotating shaft and the components are all standard parts or parts known to those skilled in the art, and the structure and principle of the rotating shaft and the components are known to those skilled in the art through technical manuals or through routine experiments.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.

Claims (8)

1. The utility model provides a multi-functional audio-visual device for teaching, includes base (1), its characterized in that, base (1) top left side fixedly connected with shell a (2), shell a (2) internally mounted has positive and negative motor (3), positive and negative motor (3) one side fixedly connected with rotation axis a (4) and rotation axis a (4) run through in shell a (2) one side, the power input end of rotation axis a (4) and the power take off electric connection of positive and negative motor (3), rotation axis a (4) one side fixedly connected with rotary rod (5), screw rod (23) are installed to rotary rod (5) one side, screw rod (23) one side runs through in the inside center department of movable block (22), threaded hole (31) and screw rod (23) threaded connection have been seted up to movable block (22) one side, through-hole a (30) and through-hole a (30) are provided with two sets of through-hole a (30) and are provided with A cross rod a (6) penetrates through one group of through holes a (30), one end of the cross rod a (6) is fixedly connected to one side of the shell a (2), a cross rod b (24) penetrates through the other group of through holes a (30), one end of the cross rod b (24) is fixedly connected to one side of the shell a (2), a shell (21) is fixedly connected to the right of the top end of the base (1), one side of the shell (21) is fixedly connected with the cross rod a (6) and the cross rod b (24), a rotating shaft (33) penetrates through one side of the shell b (27), a screw rod (23) is installed at one end of the rotating shaft (33), a sleeve rod (7) is fixedly connected to the top end of the moving block (22), a telescopic rod (8) penetrates through the top end of the sleeve rod (7), through holes b (32) are formed in the left side and the right side of the sleeve rod (7), three groups of through holes b (32) are arranged, roll shafts are, the surface of the roller shaft c (20) is fixedly connected with a connecting rod b (19), one end of the connecting rod b (19) penetrates through one side of the roller shaft b (18), the other side of the roller shaft b (18) penetrates through one end of a connecting rod a (17), and the other end of the connecting rod a (17) is installed on the surface of the roller shaft a (16).
2. The audio-visual apparatus for multi-functional education as set forth in claim 1 wherein a pressing rod (28) is inserted into the through hole b (32), the pressing rod (28) is inserted into the casing b (27) and the casing b (27) is fixedly connected to the bottom of the telescopic rod (8).
3. The multifunctional audio-visual apparatus for teaching according to claim 2 wherein said housing b (27) is fixedly connected with baffles (29) inside and said baffles (29) are provided in two sets, said housing b (27) is fixedly connected with support rods (25) at the bottom.
4. A multi-functional audio-visual teaching device according to claim 3 wherein springs (26) are fixedly attached between the surfaces of said two sets of baffles (29).
5. The multifunctional audio-visual teaching device according to claim 1, wherein a rotation shaft c (15) is fixedly connected to the top end of said telescopic rod (8), and a rotation rod (14) is inserted through the top end of said rotation shaft c (15).
6. The multi-functional audio-visual teaching unit according to claim 5, wherein the top end of said turning lever (14) is inserted into the bottom of the rotating shaft b (13), and the audio-visual unit (9) is installed on the top end of the rotating shaft b (13).
7. The audio-visual system for multi-functional education as claimed in claim 6, wherein the audio-visual system (9) has a cable slot (10) opened on the left side, the audio-visual system (9) has a projection head (12) on the right side, and the audio-visual system (9) has a speaker (11) mounted on the top.
8. The audio-visual apparatus for multi-functional teaching of claim 1, wherein the power input terminal of the positive and negative motor (3) is electrically connected to the power output terminal of the external power source.
CN202011323775.4A 2020-11-23 2020-11-23 Multifunctional audio-video device for teaching Withdrawn CN112361171A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011323775.4A CN112361171A (en) 2020-11-23 2020-11-23 Multifunctional audio-video device for teaching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011323775.4A CN112361171A (en) 2020-11-23 2020-11-23 Multifunctional audio-video device for teaching

Publications (1)

Publication Number Publication Date
CN112361171A true CN112361171A (en) 2021-02-12

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Family Applications (1)

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Country Status (1)

Country Link
CN (1) CN112361171A (en)

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Application publication date: 20210212