CN112432024A

CN112432024A - Movable multimedia teaching simple device

Info

Publication number: CN112432024A
Application number: CN202011224914.8A
Authority: CN
Inventors: 吴清锋; 曹璐; 王琛; 马烁
Original assignee: Xiamen University
Current assignee: Xiamen University
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-03-02

Abstract

The invention discloses a movable simple multimedia teaching device, which comprises a display screen; the display screen rotates and installs on the mount pad, the mount pad passes through elevating gear and installs the top at the switch board, it is provided with square board to slide in the bottom of switch board, the top equipartition of square board is equipped with multiunit resilient means, the below both sides fixed mounting of square board has mobile device, the below bilateral symmetry activity of square board offsets there is the cam, the cam is fixed mounting respectively in four third pivot of group, a set of fourth pivot and a set of fifth pivot serve, fourth pivot and fifth pivot symmetry set up, the third pivot, equal fixed mounting has the supporting shoe in fourth pivot and the fifth pivot, the third pivot that the homonymy set up is connected with fourth pivot or fifth pivot transmission cooperation, fourth pivot and fifth pivot transmission cooperation are connected with transmission, the one end transmission of fifth pivot is connected with the second motor. The device is convenient to move, the height and the angle of the display screen can be adjusted, and the teaching of teachers is facilitated.

Description

Movable multimedia teaching simple device

Technical Field

The invention relates to the technical field of movable multimedia teaching simple and convenient devices, in particular to a movable multimedia teaching simple and convenient device.

Background

Course and teaching theory are a branch subject of education subject, along with the rapid development and popularization of computer technology, multimedia computer has gradually replaced the comprehensive use status of multiple teaching media in the past, use multimedia technology in the teaching, be favorable to improving teacher's professional level, the teacher of being convenient for integrates the teaching resource, multimedia teaching technology has compensatied not enough in the traditional teaching, be neotype scientific teaching technique, traditional teaching cost is time-consuming hard again, and can not make the student learn knowledge under light state, the benefit of can not improve teaching.

The simple and convenient device of current multimedia teaching can not remove, generally needs many people to lift up and remove, has brought and has been inconvenient to the teaching in the classroom, and the simple and convenient device function singleness of current multimedia teaching can not adjust its height and angle, highly can not adjust can make the picture that the classmate who sits behind can not see the display screen, can not angle regulation can make the student who sits on the classroom edge see the picture in the display screen unclear, and the inconvenience thereof.

Disclosure of Invention

The present invention is directed to a portable multimedia teaching device, which solves the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

a movable multimedia teaching simple device comprises a display screen; the display screen is rotatably arranged on the mounting seat; the mounting seat is mounted above the control cabinet through a lifting device; a square plate is arranged in the bottom end of the control cabinet in a sliding manner; a plurality of groups of elastic devices are uniformly distributed above the square plate; two sides below the square plate are fixedly provided with a moving device; cams are symmetrically and movably abutted on the two sides below the square plate; the cams are respectively and fixedly arranged on one end of the four groups of third rotating shafts, the four groups of fourth rotating shafts and the fifth rotating shafts, and the fourth rotating shafts and the fifth rotating shafts are symmetrically arranged; supporting blocks are fixedly arranged on the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft; a third rotating shaft arranged on the same side in the control cabinet is in transmission fit connection with a fourth rotating shaft or a fifth rotating shaft; the fourth rotating shaft and the fifth rotating shaft are in transmission fit connection with a transmission device; one end of the fifth rotating shaft, which is far away from the fourth gear, is in transmission connection with a second motor; and a control panel is fixedly arranged on the upper part of one side of the control cabinet.

Further, the elastic device comprises a telescopic sleeve, a second spring and a telescopic rod; the telescopic sleeves are uniformly and fixedly arranged on the top end of the U-shaped groove; the U-shaped groove is arranged in the bottom end of the control cabinet; a second spring is arranged in the upper part of the telescopic sleeve and is in a compressed state; a telescopic rod is arranged in the lower part of the telescopic sleeve; the bottom of telescopic link is all fixed mounting on square board, and square board slides and sets up at the U-shaped inslot.

Further, the moving device comprises a strip-shaped plate and a roller skating device; the strip-shaped plates are provided with two groups; the strip-shaped plates are symmetrically and fixedly arranged in two sides of the bottom end of the control cabinet through six groups of connecting rods; and the bottom ends of the strip-shaped plates are symmetrically and fixedly provided with roller skating devices.

Further, the second motor is fixedly arranged on one side of the bottom end of the display screen; the second motor is electrically connected with the control panel; a storage cavity is arranged in the middle of the control cabinet.

Furthermore, second gears are fixedly mounted at the ends, far away from the third rotating shaft, the fourth rotating shaft and the fifth rotating shaft, of the third rotating shaft, and the second gears arranged on the same side are in transmission fit connection through a third chain; a sixth gear and a fourth gear are fixedly mounted at one ends of the fourth rotating shaft and the fifth rotating shaft close to the supporting block respectively; and the sixth gear and the fourth gear are in transmission fit connection with a transmission device.

Further, the transmission device comprises a sixth rotating shaft, a third gear and a fifth gear; the sixth rotating shaft is rotatably arranged in one side of the display screen; a third gear and a fifth gear are symmetrically and fixedly arranged at two ends of the sixth rotating shaft; the third gear is in transmission engagement with the fourth gear; and the fifth gear is in transmission fit connection with the sixth gear through a second chain.

Further, the lifting device comprises a threaded pipe and an I-shaped worm; two groups of threaded pipes are arranged; the threaded pipes are symmetrically and rotatably arranged in two sides of the top end of the control cabinet; the outer side of the threaded pipe is connected with a first gear in a transmission fit manner through a first chain; the first gear is fixedly arranged on the second rotating shaft; the second rotating shaft is rotatably arranged in the middle of the top end of the control cabinet; the top end of the second rotating shaft is in transmission connection with a first motor cam; the first motor cam is fixedly arranged above the control cabinet, and the control cabinet is electrically connected with the control panel; the threaded pipe is engaged with an I-shaped worm in a transmission manner; the top end of the I-shaped worm is rotatably arranged in the bottom end of the mounting seat; the bottom end of the I-shaped worm is arranged in the limiting groove in a sliding mode; the limiting grooves are symmetrically arranged in two sides of the control cabinet; the upper portion cover of worker's shape worm is equipped with the lag, and the top and the bottom of lag respectively fixed mounting on mount pad and switch board.

Further, a first rotating shaft is rotatably arranged in the middle of the mounting seat; the top end of the first rotating shaft is fixedly arranged in the middle of the lower part of the display screen; the bottom end of the display screen is symmetrically and fixedly provided with limiting blocks; the limiting block is arranged in the sliding groove in a sliding manner; the sliding grooves are symmetrically arranged in two sides of the top end of the mounting seat; a disc is fixedly arranged in the middle of the first rotating shaft; arc grooves are symmetrically arranged on two sides of the disc; a steel ball is arranged in the arc groove in a sliding manner; a first spring is arranged on one side of the steel ball, which is far away from the arc groove; the first spring is arranged in the circular groove in a sliding mode; the circular grooves are symmetrically and uniformly distributed in two sides of the middle of the mounting seat.

Compared with the prior art, the invention has the beneficial effects that:

the device is convenient to move and adjust the position by the aid of the roller skating device, the supporting block is not in contact with the ground when the moving device is used, the moving stability of the device is guaranteed, the moving block supports the device when the device does not need to move, the roller skating device is not in contact with the ground, the stability of the device in the use process is guaranteed, meanwhile, the lifting device is arranged, the height of the display screen is convenient to adjust, the angle of the display screen can be adjusted, and teaching of teachers is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic structural diagram of A-A in FIG. 1 according to the present invention.

Fig. 3 is an enlarged structural view of the area B in fig. 1 according to the present invention.

Fig. 4 is an enlarged structural view of the region C in fig. 1 according to the present invention.

Fig. 5 is a schematic structural view of a disc according to the present invention.

Fig. 6 is a schematic structural view of the mounting base of the present invention.

In the figure: 1-display screen, 2-mounting seat, 3-limiting block, 4-sliding groove, 5-first rotating shaft, 6-disc, 7-arc groove, 8-steel ball, 9-first spring, 10-circular groove, 11-control cabinet, 12-control panel, 13-threaded pipe, 14-second rotating shaft, 15-first gear, 16-first motor, 17-first chain, 18-limiting groove, 19-storage cavity, 20-third rotating shaft, 21-U-shaped groove, 22-square plate, 23-connecting rod, 24-strip plate, 25-skidding device, 26-cam, 27-telescopic sleeve, 28-second spring, 29-telescopic rod, 30-fourth rotating shaft, 31-fifth rotating shaft, 32-supporting block, 33-a second gear, 34-a sixth rotating shaft, 35-a third gear, 36-a fourth gear, 37-a fifth gear, 38-a second chain, 39-a sixth gear, 40-a third chain, 41-a second motor, 42-a protective sleeve and 43-an I-shaped worm.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and 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.

Example 1

Referring to fig. 1 and fig. 2, in an embodiment of the present invention, a portable multimedia teaching simplification apparatus includes a display screen 1; the display screen 1 is rotatably arranged on the mounting base 2; the mounting seat 2 is mounted above the control cabinet 11 through a lifting device; a square plate 22 is arranged in the bottom end of the control cabinet 11 in a sliding manner; a plurality of groups of elastic devices are uniformly distributed above the square plate 22; two sides below the square plate 22 are fixedly provided with a moving device; two sides below the square plate 22 are symmetrically and movably abutted with 26; the 26 are respectively and fixedly arranged at one end of the four groups of third rotating shafts 20, the group of fourth rotating shafts 30 and the group of fifth rotating shafts 31, and the fourth rotating shafts 30 and the fifth rotating shafts 31 are symmetrically arranged; supporting blocks 32 are fixedly arranged on the third rotating shaft 20, the fourth rotating shaft 30 and the fifth rotating shaft 31; the third rotating shaft 20 arranged on the same side in the control cabinet 11 is in transmission fit connection with the fourth rotating shaft 30 or the fifth rotating shaft 31; the fourth rotating shaft 30 and the fifth rotating shaft 31 are in transmission fit connection with a transmission device; one end of the fifth rotating shaft 31, which is far away from the fourth gear 36, is in transmission connection with a second motor 41; and a control panel 12 is fixedly arranged at the upper part of one side of the control cabinet 11. The second motor 41 rotates and is the fifth rotating shaft 31 rotates, the fifth rotating shaft 31 rotates and drives the third rotating shaft 20 on the same side to rotate, 26 on the same side of the fifth rotating shaft 31 and the supporting block 32 on the same side of the fifth rotating shaft 31 rotate, the fifth rotating shaft 31 drives the fourth rotating shaft 30 to reversely rotate through the transmission device, the fourth rotating shaft 30 drives the third rotating shaft 20 on the same side of the fourth rotating shaft 30 to reversely rotate, namely, 26 on the same side of the fourth rotating shaft 30 and the supporting block 32 reversely rotate, namely, the rotating directions of the 26 on the two sides are opposite, when the rotating directions of the output end of the 26 are opposite, the output end of the 26 rotates to the horizontal direction from the vertical direction, the square plate 22 can move downwards under the action force of the elastic device, the bottom end of the supporting block 32 rotates to the.

Referring to fig. 4, the elastic device includes a telescopic sleeve 27, a second spring 28 and a telescopic rod 29; the telescopic sleeves 27 are uniformly and fixedly arranged on the top end of the U-shaped groove 21; the U-shaped groove 21 is arranged in the bottom end of the control cabinet 11; a second spring 28 is arranged in the upper part of the telescopic sleeve 27, and the second spring 28 is in a compressed state; a telescopic rod 29 is arranged in the lower part of the telescopic sleeve 27; the bottom of telescopic link 29 is all fixed mounting on square board 22, and square board 22 slides and sets up in U-shaped groove 21.

Referring to fig. 1, the moving device includes a strip-shaped plate 24 and a roller-skating device 25; the strip-shaped plates 24 are provided with two groups; the strip-shaped plates 24 are symmetrically and fixedly arranged in two sides of the bottom end of the control cabinet 11 through six groups of connecting rods 23; the bottom ends of the strip-shaped plates 24 are symmetrically and fixedly provided with roller skating devices 25.

Referring to fig. 1 and 2, the second motor 41 is fixedly installed at one side of the bottom end of the display screen 1; the second motor 41 is electrically connected with the control panel 12; a storage cavity 19 is arranged in the middle of the control cabinet 11.

Referring to fig. 2, the ends of the third rotating shaft 20, the fourth rotating shaft 30 and the fifth rotating shaft 31 far from 26 are all fixedly provided with second gears 33, and the second gears 33 arranged on the same side are in transmission fit connection through a third chain 40; a sixth gear 39 and a fourth gear 36 are respectively and fixedly mounted at one ends of the fourth rotating shaft 30 and the fifth rotating shaft 31 close to the supporting block 32; the sixth gear 39 and the fourth gear 36 are in transmission fit connection with a transmission device.

Referring to fig. 2, the transmission device includes a sixth shaft 34, a third gear 35 and a fifth gear 37; the sixth rotating shaft 34 is rotatably installed in one side of the display screen 1; a third gear 35 and a fifth gear 37 are symmetrically and fixedly mounted at two ends of the sixth rotating shaft 34; the third gear 35 is in transmission engagement with the fourth gear 36; the fifth gear 37 is in transmission fit connection with a sixth gear 39 through a second chain 38.

Example 2

Referring to fig. 1, the lifting device includes a threaded pipe 13 and an i-shaped worm 43; two groups of threaded pipes 13 are arranged; the threaded pipes 13 are symmetrically and rotatably arranged in two sides of the top end of the control cabinet 11; the outer side of the threaded pipe 13 is connected with a first gear 15 through a first chain 17 in a transmission fit manner; the first gear 15 is fixedly arranged on the second rotating shaft 14; the second rotating shaft 14 is rotatably installed in the middle of the top end of the control cabinet 11; the top end of the second rotating shaft 14 is connected with a first motor cam 26 in a transmission manner; the first motor cam 26 is fixedly installed above the control cabinet 11, and the control cabinet 11 is electrically connected with the control panel 12; the threaded pipe 13 is engaged with an I-shaped worm 43 in a transmission manner; the top end of the I-shaped worm 43 is rotatably arranged in the bottom end of the mounting seat 2; the bottom end of the I-shaped worm 43 is arranged in the limit groove 18 in a sliding manner; the limiting grooves 18 are symmetrically arranged in two sides of the control cabinet 11; the upper portion cover of worker's shape worm 43 is equipped with lag 42, and the top and the bottom of lag 42 are fixed mounting respectively on mount pad 2 and switch board 11. When the height of the display screen 1 needs to be adjusted, the first motor cam 26 rotates, namely the second rotating shaft 14 and the first gear 15 rotate, the first gear 15 rotates to drive the threaded pipe 13 to rotate through the first chain 17, and the threaded pipe 13 rotates to enable the i-shaped worm 43 to move in the vertical direction, namely the mounting base 2 and the display screen 1 move in the vertical direction, namely the height of the display screen 1 is adjusted.

Example 3

Referring to fig. 1, 3, 5 and 6, a first rotating shaft 5 is rotatably mounted in the middle of the mounting base 2; the top end of the first rotating shaft 5 is fixedly arranged in the middle of the lower part of the display screen 1; the bottom end of the display screen 1 is symmetrically and fixedly provided with limiting blocks 3; the limiting block 3 is arranged in the sliding groove 4 in a sliding manner; the sliding grooves 4 are symmetrically arranged in two sides of the top end of the mounting seat 2; a disc 6 is fixedly arranged in the middle of the first rotating shaft 5; arc grooves 7 are symmetrically arranged on two sides of the disc 6; a steel ball 8 is arranged in the arc groove 7 in a sliding manner; a first spring 9 is arranged on one side of the steel ball 8, which is far away from the arc groove 7; the first spring 9 is arranged in the circular groove 10 in a sliding manner; the circular grooves 10 are symmetrically and uniformly distributed in two sides of the middle of the mounting base 2. When the angle of the display screen 1 needs to be rotated, the display screen 1 can be directly rotated to adjust the angle of the display screen 1, and the steel ball 8 slides into the arc groove 7 to enable the display screen 1 to be incapable of rotating in the horizontal direction without external force action on the display screen 1.

The working principle of the invention is as follows:

when the device is moved, the control panel 12 controls the second motor 41 to rotate, the second motor 41 rotates, that is, the fifth rotating shaft 31, the fourth gear 36 on the fifth rotating shaft 31, the supporting block 32 on the fifth rotating shaft 31, and the second gear 33 on the fifth rotating shaft 31 rotate, the second gear 33 on the fifth rotating shaft 31 drives the second gear 33 on the same side to rotate through the third chain 40, that is, the third rotating shaft 20 on the same side as the fifth rotating shaft 31, the supporting block 32 on the same side as the fifth rotating shaft 31, and the 26 on the same side as the fifth rotating shaft 31 all rotate, the fourth gear 36 rotates to drive the third gear 35 to rotate in reverse direction, that is, the sixth rotating shaft 34 and the fifth gear 37 rotate in reverse direction, the fifth gear 37 rotates in reverse direction through the second chain 38 to drive the sixth gear 39, the second gear 33 on the fourth rotating shaft 30, the 26 on the fourth rotating shaft 30, and the supporting block 32 on the fourth rotating shaft 30 to rotate in reverse direction, the second gear 33 on the fourth rotating shaft 30 rotates in reverse direction through the third chain 40 to drive the Rotating, namely, the rotating direction of the 26 on the same side of the fourth rotating shaft 30 is opposite, namely, the rotating direction of the 26 on both sides is opposite, namely, the output end of the 26 rotates from the vertical direction to the horizontal direction, namely, the square plate 22 moves downwards under the action of the second spring 28, the bottom end of the supporting block 32 rotates to the horizontal direction, and the strip-shaped plate 24 is in contact with the ground, namely, the device can be moved; when the height of the display screen 1 needs to be adjusted, the first motor cam 26 is controlled to rotate through the control panel 12, the first motor cam 26 rotates, namely the second rotating shaft 14 and the first gear 15 rotate, the first gear 15 rotates to drive the threaded pipe 13 to rotate through the first chain 17, the threaded pipe 13 rotates to enable the I-shaped worm 43 to move in the vertical direction, namely the mounting seat 2 and the display screen 1 move in the vertical direction, the height of the display screen 1 is adjusted, and when the angle of the display screen 1 needs to be rotated, the display screen 1 can be directly rotated to adjust the angle of the display screen 1.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A movable multimedia teaching simple device comprises a display screen (1); the display screen is characterized in that the display screen (1) is rotatably arranged on the mounting base (2); the mounting seat (2) is mounted above the control cabinet (11) through a lifting device; a square plate (22) is arranged in the bottom end of the control cabinet (11) in a sliding manner; a plurality of groups of elastic devices are uniformly distributed above the square plate (22); two sides below the square plate (22) are fixedly provided with a moving device; cams (26) are symmetrically and movably abutted against the two sides below the square plate (22); the cams (26) are respectively and fixedly arranged on one end of the four groups of third rotating shafts (20), one group of fourth rotating shafts (30) and one group of fifth rotating shafts (31), and the fourth rotating shafts (30) and the fifth rotating shafts (31) are symmetrically arranged; supporting blocks (32) are fixedly arranged on the third rotating shaft (20), the fourth rotating shaft (30) and the fifth rotating shaft (31); a third rotating shaft (20) arranged on the same side in the control cabinet (11) is in transmission fit connection with a fourth rotating shaft (30) or a fifth rotating shaft (31); the fourth rotating shaft (30) and the fifth rotating shaft (31) are in transmission fit connection with a transmission device; one end of the fifth rotating shaft (31) far away from the fourth gear (36) is in transmission connection with a second motor (41); and a control panel (12) is fixedly mounted on the upper part of one side of the control cabinet (11).

2. The movable multimedia teaching simplification device according to claim 1, characterized in that the ends of the third rotating shaft (20), the fourth rotating shaft (30) and the fifth rotating shaft (31) far away from the end (26) are all fixedly provided with a second gear (33), and the second gears (33) arranged on the same side are in transmission fit connection through a third chain (40); a sixth gear (39) and a fourth gear (36) are fixedly mounted at one ends of the fourth rotating shaft (30) and the fifth rotating shaft (31) close to the supporting block (32) respectively; the sixth gear (39) and the fourth gear (36) are connected with a transmission device in a transmission matching manner.

3. The portable multimedia teaching facilitation device according to claim 1, wherein the elastic means comprises a telescopic sleeve (27), a second spring (28) and a telescopic rod (29); the telescopic sleeves (27) are uniformly and fixedly arranged on the top end of the U-shaped groove (21); the U-shaped groove (21) is arranged in the bottom end of the control cabinet (11); a second spring (28) is arranged in the upper part of the telescopic sleeve (27), and the second spring (28) is in a compressed state; a telescopic rod (29) is arranged in the lower part of the telescopic sleeve (27); the bottom of telescopic link (29) is all fixed mounting on square board (22), and square board (22) slide to set up in U-shaped groove (21).

4. The mobile multimedia teaching facilitation device according to claim 1, wherein the mobile device comprises a strip-shaped plate (24) and a roller-skating device (25); the strip-shaped plates (24) are provided with two groups; the strip-shaped plates (24) are symmetrically and fixedly arranged in two sides of the bottom end of the control cabinet (11) through six groups of connecting rods (23); and the bottom ends of the strip-shaped plates (24) are symmetrically and fixedly provided with roller skating devices (25).

5. The portable multimedia teaching facilitation device according to claim 1, wherein the second motor (41) is fixedly installed at one side of the bottom end of the display screen (1); the second motor (41) is electrically connected with the control panel (12); a storage cavity (19) is arranged in the middle of the control cabinet (11).

6. The portable multimedia teaching facilitation device according to claim 1, wherein said lifting means comprises a threaded pipe (13) and an i-shaped worm (43); the threaded pipes (13) are provided with two groups; the threaded pipes (13) are symmetrically and rotatably arranged in two sides of the top end of the control cabinet (11); the outer side of the threaded pipe (13) is connected with a first gear (15) through a first chain (17) in a transmission fit manner; the first gear (15) is fixedly arranged on the second rotating shaft (14); the second rotating shaft (14) is rotatably arranged in the middle of the top end of the control cabinet (11); the top end of the second rotating shaft (14) is connected with a first motor cam (26) in a transmission way; the first motor cam (26) is fixedly arranged above the control cabinet (11), and the control cabinet (11) is electrically connected with the control panel (12); the threaded pipe (13) is engaged with an I-shaped worm (43) in a transmission manner; the top end of the I-shaped worm (43) is rotatably arranged in the bottom end of the mounting seat (2); the bottom end of the I-shaped worm (43) is arranged in the limiting groove (18) in a sliding manner; the limiting grooves (18) are symmetrically arranged in two sides of the control cabinet (11); the upper portion cover of worker shape worm (43) is equipped with lag (42), and the top and the bottom of lag (42) are fixed mounting respectively on mount pad (2) and switch board (11).

7. The movable multimedia teaching simplicity device according to claim 1, characterized in that the middle of the mounting base (2) is rotatably provided with a first rotating shaft (5); the top end of the first rotating shaft (5) is fixedly arranged in the middle of the lower part of the display screen (1); the bottom end of the display screen (1) is symmetrically and fixedly provided with limiting blocks (3); the limiting block (3) is arranged in the sliding groove (4) in a sliding manner; the sliding grooves (4) are symmetrically arranged in two sides of the top end of the mounting seat (2); a disc (6) is fixedly arranged in the middle of the first rotating shaft (5); arc grooves (7) are symmetrically arranged on two sides of the disc (6); a steel ball (8) is arranged in the arc groove (7) in a sliding manner; a first spring (9) is arranged on one side of the steel ball (8) far away from the arc groove (7); the first spring (9) is arranged in the circular groove (10) in a sliding manner; the circular grooves (10) are symmetrically and uniformly distributed in the two sides of the middle of the mounting seat (2).

8. The mobile multimedia teaching facilitation device according to claim 2, wherein the transmission means comprises a sixth rotating shaft (34), a third gear (35) and a fifth gear (37); the sixth rotating shaft (34) is rotatably arranged in one side of the display screen (1); a third gear (35) and a fifth gear (37) are symmetrically and fixedly mounted at two ends of the sixth rotating shaft (34); the third gear (35) is in transmission engagement with the fourth gear (36); the fifth gear (37) is in transmission fit connection with a sixth gear (39) through a second chain (38).