CN211821399U

CN211821399U - Teaching mobile display screen regulator

Info

Publication number: CN211821399U
Application number: CN202020078283.2U
Authority: CN
Inventors: 白雪平
Original assignee: Yunhe Guokeke Toy Equipment Factory
Current assignee: Yunhe Guokeke Toy Equipment Factory
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-10-30
Anticipated expiration: 2030-01-15

Abstract

The utility model relates to a display screen regulator especially relates to a teaching mobile display screen regulator. The technical problem to be solved is as follows: the teaching mobile display screen adjuster can be moved and adjusted randomly to adjust the height and direction of the display screen. The technical scheme is as follows: a teaching mobile display screen adjuster comprises a support, a universal wheel, a bearing, a first rotating shaft, a chuck, a first swinging rod, a first clamping block, a first spring and the like; the right-hand spout that has opened in support front side upper portion, the spout inward sliding formula is equipped with the first in command, and the support bottom left and right sides all is equipped with the universal wheel, and it has first recess to open in the middle of the support top, and first recess inner wall upper portion is equipped with the bearing, installs first pivot on the bearing. The utility model discloses a position of slide bar can be fixed to the second fixture block and the draw-in groove that set up, does not need people to fix the slide bar with the hand always, through the screw rod and the swivel nut that set up for people can fix the position of display screen, prevent that the display screen from dropping.

Description

Teaching mobile display screen regulator

Technical Field

The utility model relates to a display screen regulator especially relates to a teaching mobile display screen regulator.

Background

People often need to use the display screen to give the student the show of carrying out teaching content better when teaching, and present display screen is installed on the wall usually, and half is the blackboard, and half is the display screen, and the display screen is difficult to remove, just so leads to sitting the difficult content on seeing clearly the display screen when the student of the farther position from the display screen in class, influences student's classroom impression and knowledge and obtains.

SUMMERY OF THE UTILITY MODEL

In order to overcome the shortcoming that people are using the display screen teaching, the display screen can't be removed, influences student's classroom impression and knowledge acquisition, the technical problem that solves: the teaching mobile display screen adjuster can be moved and adjusted randomly to adjust the height and direction of the display screen.

The technical scheme is as follows: a teaching mobile display screen regulator comprises a support, universal wheels, a bearing, a first rotating shaft, a chuck, a first swinging rod, a first clamping block, a first spring, a first handle, a first support plate, a sliding rod, a sliding block, a sliding rail, a placing box and a clamping device, wherein the right side of the upper part of the front side of the support is provided with a sliding chute, the sliding chute is internally provided with the first handle in a sliding manner, the left side and the right side of the bottom of the support are respectively provided with the universal wheels, the middle of the top of the support is provided with a first groove, the upper part of the inner wall of the first groove is provided with the bearing, the bearing is provided with the first rotating shaft, the bottom of the first rotating shaft is provided with the chuck, the right part of the support is provided with a second groove, the second groove is communicated with the first groove, the rear wall of the second groove is rotatably provided with the first swinging rod, the bottom of the first swinging rod is connected with the, the first spring other end is connected with first swinging arms right side upper portion, and first pivot top is equipped with first extension board, and the sliding hole has all been opened to the first extension board top left and right sides, has placed the slide bar in the sliding hole, and the slide bar top is equipped with the slider, and left and right sides both sides slider top slidingtype is equipped with the slide rail, and the slide rail top is equipped with places the case, and first extension board top left and right sides all is equipped with chucking device, and chucking device is located between the left and right sides both sides slide bar, and chucking device and slide bar cooperation.

Further, the chucking device is including hollow tube, the guide bar, second spring and second fixture block, the first backup pad top left and right sides all is equipped with the hollow tube, the hollow tube is located between the two sides slide bar of left and right sides, guiding hole has all been opened at left hollow tube right-hand member middle part and right-hand hollow tube left end middle part, the guide bar has been placed in the hollow tube, the guide bar passes the guiding hole, left guide bar left end and right-hand guide bar right-hand member all are equipped with the second fixture block, the right wall all is equipped with the second spring in left hollow tube right-hand wall and the right-hand hollow tube left wall, the guide bar is walked around to the second spring, the left second spring other end is connected with left second fixture block right-hand member, the right-hand second spring other end is connected with right-hand second fixture block left end, left side slide bar right.

Further, still including fixing device, fixing device is located the upper and lower two of placing the case left and right sides respectively, including swivel nut, screw rod and carousel, places the equal embedded swivel nut that is equipped with in upper and lower two of the case left and right sides, is connected with the screw rod with the mode of screw thread in the swivel nut, and left screw rod left end and right-hand screw rod right-hand member all are equipped with the carousel.

The swing mechanism comprises a first support plate, a first rotating shaft, a gear, a swing handle and teeth, wherein the first support plate is arranged on the right side of the top of the first support plate, the second rotating shaft is rotatably arranged on the upper portion of the second support plate, the gear is arranged at the rear end of the second rotating shaft, the swing handle is arranged on the front portion of the second rotating shaft, the teeth are uniformly arranged on the right side of the right sliding rod, and the teeth are meshed with the gear.

Further, still including the stabilising arrangement, the stabilising arrangement is located the support bottom left and right sides, including swing seat, the second swinging arms, the kelly, second handle and third spring, third recess and fourth recess have all been opened on support left and right sides upper portion, the fourth recess is located the third recess below, the support bottom left and right sides all is equipped with the swing seat, the universal wheel is located between the swing seat of the left and right sides, swing seat front side rotation type is equipped with the second swinging arms, second swinging arms bottom and ground contact, second swinging arms front side middle part rotary type is equipped with the kelly, kelly and fourth recess cooperation, left kelly left side and right-hand kelly right side all are equipped with the second handle, all be equipped with the third spring in the middle of left kelly right side and in the middle of right-hand kelly left side, the third spring other end is connected with second swinging arms top.

When the student needs to use the display screen, the student pushes the placing box by hand, when the placing box moves to a proper position, the student stops pushing the placing box, then the student slides the first handle upwards, the sliding chute plays a guiding role on the first handle, the first handle slides upwards to drive the first swinging rod to rotate clockwise, the first spring is compressed, the first swinging rod rotates clockwise to drive the first clamping block to rotate rightwards, the first clamping block rotates rightwards until the first clamping block does not contact with the chuck, the student stops rotating the first swinging rod, then the student rotates the first supporting plate, the first supporting plate rotates to drive the placing box to rotate, after the placing box rotates to a proper position, the student stops rotating the first supporting plate, then the student slides the first handle downwards, the first handle slides downwards to drive the first swinging rod to rotate anticlockwise, the first swinging rod rotates anticlockwise to drive the first clamping block to rotate leftwards to reset, the reset action of the first spring drives the first clamping block to better move and reset, the first clamping block moves leftwards until the first clamping block is clamped by the clamping disc, people can stop sliding the first handle, which can help people to adjust the angle of the display screen according to the requirements of students, then, people move the clamping device inwards, and after the clamping device is not contacted with the slide bar, people move the slide bar up and down again, the slide hole guides the slide bar, the slide bar moves up and down to drive the placing box to move up and down, after the placing box moves up and down to a proper position, people stop moving the slide bar, then people loosen the clamping device again, the position of the slide bar can be fixed, and then the position of the placing box is fixed, then people move the placing box left and right, the slide rail moves left and right, the slide block plays a guiding role for the slide rail, after the placing box moves left and right to a proper position, people stop moving the placing box, so that people can adjust the direction of the display screen according to the requirements of students.

When people need reciprocate the position of placing the case, earlier the inward movement guide bar, the second spring is compressed thereupon, the guide bar inward movement drives second fixture block inward movement, second fixture block inward movement is to not contacting with the draw-in groove after, people stop moving the guide bar, then people reciprocate the slide bar again, the slide opening plays the guide effect to the slide bar, the slide bar reciprocates the drive and places the case and reciprocate, place the case and reciprocate to suitable position after, people stop moving the slide bar, people loosen the guide bar again after that, the reset action of second spring drives the guide bar and outwards removes the reset, the draw-in groove is blocked thereupon to the second fixture block, can fix the position of slide bar, and then fix the position of placing the case.

When people need put the display screen on placing the case, right-hand carousel is rotated to first positive direction, right-hand carousel positive direction rotates and drives right-hand screw rod and remove right, right-hand screw rod moves right behind the suitable position right, people stop the positive direction and rotate right-hand carousel, people move left screw rod to suitable position again repeatedly above-mentioned operation, then people put into placing the case with the display screen again, people rotate right-hand carousel again, right-hand carousel rotates right-hand screw rod in the opposite direction and drives right-hand screw rod and remove left, right-hand screw rod moves left to the back that resets, people stop right-hand carousel of opposite direction rotation, people repeat above-mentioned operation again and remove left screw rod to reseing, this makes people can fix the position of display screen, prevent that the display screen.

When people need adjust the height of display screen, first control both sides second fixture block remove respectively to not with control draw-in groove contact, then people rotate the swing handle again, the swing handle rotates and drives the gear rotation through the second pivot, the gear makes right-hand slide bar reciprocate with tooth meshing, right-hand slide bar reciprocates and drives the slide rail and reciprocate, the slide rail reciprocates and drives left slide bar and reciprocate, thereby it reciprocates to drive the case of placing, place the case and reciprocate to the suitable position after, people stop rotating the swing handle, remove left and right sides second fixture block again to the position of fixing the case of placing that resets, this can help people need not adjust the height of display screen from top to bottom with the hand, people's the operation degree of difficulty has been reduced.

When people need to move the equipment, the second handle is rotated outwards firstly, the clamping rod is driven to rotate outwards by the outward rotation of the second handle, the clamping rod is driven to rotate outwards by the upward movement of the second handle, the second swinging rod is driven to rotate upwards by the upward movement of the second handle, the third spring is stretched accordingly, after the clamping rod is inserted into the third groove, people stop moving the second handle, the second swinging rod is separated from the ground, people can move the equipment, when people move the equipment to a proper position, the second handle is driven to rotate outwards by the outward movement of the second handle, the clamping rod is driven to rotate outwards until the clamping rod rotates away from the third groove, then people move the second handle downwards, the second handle is driven to rotate downwards by the downward movement of the clamping rod, the resetting action of the third spring drives the clamping rod to better move and reset, after the clamping rod moves to be inserted into the fourth groove, people stop rotating the second handle, the second swinging rod is contacted with the ground, and therefore the equipment can be stably contacted with the ground, and the universal wheel can be prevented from moving automatically in the process of adjusting the equipment by people.

The utility model discloses a second fixture block and the draw-in groove that set up, can fix the position of slide bar, do not need people to fix the slide bar with the hand always, screw rod and swivel nut through setting up, make people can fix the position of display screen, prevent that the display screen from dropping, gear and tooth through setting up, can help people not need adjust the height of display screen from top to bottom with the hand, through the second swinging arms that sets up, make this equipment can with ground steady contact, prevent that people from adjusting the in-process universal wheel self-propelled movement of this equipment afterwards.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic view of a first partial front view structure of the present invention.

Fig. 3 is a schematic view of a second partial front view structure of the present invention.

Fig. 4 is a schematic view of a third partial front view structure of the present invention.

Fig. 5 is a schematic front view of a fourth part of the present invention.

Fig. 6 is a schematic view of a fifth partial front view structure of the present invention.

Part names and serial numbers in the figure: 1. the bearing seat 101, the sliding groove 2, the universal wheel 3, the first groove 4, the bearing 5, the first rotating shaft 6, the chuck 7, the second groove 8, the first swinging rod 9, the first clamping block 10, the first spring 11, the first handle 12, the first support plate 13, the sliding hole 14, the sliding rod 15, the sliding block 16, the sliding rail 17, the placing box 18, the clamping device 181, the hollow pipe 181, the 182, the guide hole 183, the guide rod 184, the second spring 185, the second clamping block 185, the clamping groove 186, the fixing device 19, the screw sleeve 191, the screw 192, the screw 193, the rotating disc 20, the second support plate 21, the second rotating shaft 22, the gear 23, the rocker handle 24, the tooth 24, the 25, the stabilizing device 251, the third groove 252, the fourth groove 253, the swinging seat 254, the second swinging rod 255, the clamping rod 256, the second swinging rod 257, and the third spring handle.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Example 1

A teaching mobile display screen adjuster is shown in figures 1-6 and comprises a support 1, a universal wheel 2, a bearing 4, a first rotating shaft 5, a chuck 6, a first swinging rod 8, a first clamping block 9, a first spring 10, a first handle 11, a first supporting plate 12, a sliding rod 14, a sliding block 15, a sliding rail 16, a placing box 17 and a clamping device 18, wherein a sliding groove 101 is formed in the right side of the upper part of the front side of the support 1, the first handle 11 is arranged in the sliding groove 101 in a sliding manner, the universal wheels 2 are arranged on the left side and the right side of the bottom of the support 1, a first groove 3 is formed in the middle of the top of the support 1, the bearing 4 is arranged on the upper part of the inner wall of the first groove 3, the first rotating shaft 5 is arranged on the bearing 4, the chuck 6 is arranged at the bottom of the first rotating shaft 5, a second groove 7 is formed in the right part of the support 1, the second groove 7 is communicated with the first groove 3, the first swinging rod 8, the top end of the first swing rod 8 is provided with a first clamping block 9, the first clamping block 9 is matched with the chuck 6, the upper portion of the inner wall of the second groove 7 is provided with a first spring 10, the other end of the first spring 10 is connected with the upper portion of the right side of the first swing rod 8, the top of the first rotating shaft 5 is provided with a first support plate 12, the left side and the right side of the top of the first support plate 12 are provided with sliding holes 13, sliding rods 14 are placed in the sliding holes 13, sliding blocks 15 are arranged at the tops of the sliding rods 14, sliding rails 16 are arranged at the tops of the sliding blocks 15 on the left side and the right side in a sliding mode, a placing box 17 is arranged at the tops of the sliding rails 16, clamping devices 18 are arranged on the left.

Example 2

The chucking device 18 includes a hollow tube 181, a guide rod 183, a second spring 184 and a second latch 185, wherein hollow pipes 181 are respectively arranged on the left side and the right side of the top of the first support plate 12, the hollow pipes 181 are positioned between the left side and the right side of the slide bar 14, guide holes 182 are respectively formed in the middle part of the right end of the left hollow pipe 181 and the middle part of the left end of the right hollow pipe 181, a guide rod 183 is placed in the hollow pipe 181, the guide rod 183 passes through the guide holes 182, a second latch 185 is respectively arranged at the left end of the left guide rod 183 and the right end of the right guide rod 183, a second spring 184 is respectively arranged on the right wall in the left hollow pipe 181 and the left wall in the right hollow pipe 181, the second spring 184 bypasses the guide rod 183, the other end of the left second spring 184 is connected with the right end of the left second latch 185, the other end of the right second spring 184 is connected with the left end of the right second latch 185, a latch 186 is uniformly arranged.

Example 3

Still including fixing device 19, fixing device 19 is located the upper and lower two of placing the case 17 left and right sides respectively, including swivel nut 191, screw 192 and carousel 193, places the equal embedded swivel nut 191 that is equipped with in upper and lower two of the case 17 left and right sides, is connected with screw 192 with the screw thread mode in the swivel nut 191, and left screw 192 left end and right screw 192 right-hand member all are equipped with carousel 193.

Example 4

The swing type swing mechanism further comprises a second support plate 20, a second rotating shaft 21, a gear 22, a swing handle 23 and a tooth 24, the second support plate 20 is arranged on the right side of the top of the first support plate 12, the second rotating shaft 21 is rotatably arranged on the upper portion of the second support plate 20, the gear 22 is arranged at the rear end of the second rotating shaft 21, the swing handle 23 is arranged at the front portion of the second rotating shaft 21, the tooth 24 is uniformly arranged on the right side of the right slide bar 14, and the tooth 24 is meshed with the gear 22.

Example 5

The device also comprises a stabilizing device 25, the stabilizing device 25 is positioned at the left side and the right side of the bottom of the support 1 and comprises a swinging seat 253 and a second swinging rod 254, the clamping rod 255, the second handle 256 and the third spring 257, the upper parts of the left side and the right side of the support 1 are respectively provided with a third groove 251 and a fourth groove 252, the fourth groove 252 is positioned below the third groove 251, the left side and the right side of the bottom of the support 1 are respectively provided with a swinging seat 253, the universal wheel 2 is positioned between the swinging seats 253 on the left side and the right side, the front side of the swinging seat 253 is rotatably provided with a second swinging rod 254, the bottom of the second swinging rod 254 is contacted with the ground, the middle part of the front side of the second swinging rod 254 is rotatably provided with the clamping rod 255, the clamping rod 255 is matched with the fourth groove 252, the left side of the left clamping rod 255 and the right side of the right clamping rod 255 are respectively provided with the second handle 256, the middle part of the right side of the left clamping rod 255 and the middle part of the left side of the right clamping rod.

When the student needs to use the display screen, the student pushes the placing box 17 by hand, when the placing box 17 moves to a proper position, the student stops pushing the placing box 17, then the student slides the first handle 11 upwards, the sliding chute 101 guides the first handle 11, the first handle 11 slides upwards to drive the first swinging rod 8 to rotate clockwise, the first spring 10 is compressed, the first swinging rod 8 rotates clockwise to drive the first clamping block 9 to rotate rightwards, when the first clamping block 9 rotates rightwards and is not contacted with the clamping chuck 6, the student stops rotating the first swinging rod 8, then the student rotates the first supporting plate 12, the student rotates the placing box 17, after the placing box 17 rotates to a proper position, the student stops rotating the first supporting plate 12, then the student slides the first handle 11 downwards, the first handle 11 slides downwards to drive the first swinging rod 8 to rotate anticlockwise, the first swing rod 8 rotates anticlockwise to drive the first clamping block 9 to rotate leftwards for resetting, the resetting function of the first spring 10 drives the first clamping block 9 to move leftwards for resetting better, the first clamping block 9 moves leftwards until being clamped by the clamping disc 6, people stop sliding the first handle 11, the angle of the display screen can be adjusted according to the requirements of students, then people move the clamping device 18 inwards, after the clamping device 18 is not contacted with the sliding rod 14, people move the sliding rod 14 up and down again, the sliding hole 13 plays a guiding role on the sliding rod 14, the sliding rod 14 moves up and down to drive the placing box 17 to move upwards and downwards, after the placing box 17 moves upwards and downwards to a proper position, people stop moving the sliding rod 14, then people loosen the clamping device 18 again to fix the position of the sliding rod 14, further fix the position of the placing box 17, then people move the placing box 17 leftwards and rightwards and leftwards, the sliding, slider 15 plays the guide effect to slide rail 16, places case 17 and removes behind the suitable position, and people stops to remove and places case 17, and this makes people can adjust the direction of display screen according to student's demand.

When people need to move the position of the placing box 17 up and down, the guide rod 183 is moved inwards, the second spring 184 is compressed accordingly, the guide rod 183 moves inwards to drive the second fixture block 185 to move inwards, after the second fixture block 185 moves inwards to be not in contact with the fixture groove 186, people stop moving the guide rod 183, then people move the slide rod 14 up and down again, the slide hole 13 plays a guiding role for the slide rod 14, the slide rod 14 moves up and down to drive the placing box 17 to move up and down, after the placing box 17 moves up and down to a proper position, people stop moving the slide rod 14, then people loosen the guide rod 183, the resetting effect of the second spring 184 drives the guide rod 183 to move outwards to reset, the second fixture block 185 blocks the fixture groove 186 accordingly, the position of the slide rod 14 can be fixed, and the position of the placing box 17 can be fixed.

When people need to put the display screen on the placing box 17, the right rotary disc 193 is rotated in the positive direction, the right rotary disc 193 rotates in the positive direction to drive the right screw 192 to move rightwards, after the right screw 192 moves rightwards to a proper position, people stop rotating the right rotary disc 193 in the positive direction, people repeat the operation to move the left screw 192 to a proper position, then people put the display screen into the placing box 17, people rotate the right rotary disc 193 in the negative direction again, the right rotary disc 193 rotates in the negative direction to drive the right screw 192 to move leftwards, after the right screw 192 moves leftwards to reset, people stop rotating the right rotary disc 193 in the negative direction, people repeat the operation to move the left screw 192 to reset, and the operation enables people to fix the position of the display screen and prevent the display screen from falling.

When people need to adjust the height of the display screen, the left and right second fixture blocks 185 are moved to be not in contact with the left and right clamp grooves 186, then people rotate the swing handle 23, the swing handle 23 rotates to drive the gear 22 to rotate through the second rotating shaft 21, the gear 22 is meshed with the tooth 24, so that the right slide bar 14 moves up and down, the right slide bar 14 moves up and down to drive the slide rail 16 to move up and down, the slide rail 16 moves up and down to drive the left slide bar 14 to move up and down to drive the placing box 17 to move up and down, after the placing box 17 moves up and down to a proper position, people stop rotating the swing handle 23, then the left and right second fixture blocks 185 are moved to reset and fix the position of the placing box 17, and therefore people can be helped not to adjust the height of the display screen.

When people need to move the equipment, the second handle 256 is firstly rotated outwards, the second handle 256 is rotated outwards to drive the clamping rod 255 to rotate outwards, after the clamping rod 255 rotates outwards and does not contact with the fourth groove 252, people move the second handle 256 upwards, the second handle 256 moves upwards to drive the second swinging rod 254 to rotate upwards through the clamping rod 255, the third spring 257 is stretched accordingly, after the clamping rod 255 is inserted into the third groove 251, people stop moving the second handle 256, so that the second swinging rod 254 is separated from the ground, people can move the equipment, when people move the equipment to a proper position, the second handle 256 is rotated outwards, the second handle 256 moves outwards to drive the clamping rod 255 to rotate outwards until the clamping rod 255 rotates away from the third groove 251, then people move the second handle 256 downwards, the second handle 256 moves downwards to drive the second swinging rod 254 to rotate downwards through the clamping rod 255, the reset action of the third spring 257 drives the clamping rod 255 to better move and reset, after the clamping rod 255 moves to be inserted into the fourth groove 252, people stop rotating the second handle 256, and then the second swinging rod 254 is contacted with the ground, so that the equipment can be stably contacted with the ground, and the universal wheel 2 is prevented from moving by themselves when people adjust the equipment at the back.

It should be understood that the above description is for illustrative purposes only and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention are intended to be included within the scope of the claims herein.

Claims

1. The utility model provides a teaching mobile display screen regulator, including support (1), universal wheel (2), bearing (4), first pivot (5) and chuck (6), support (1) bottom left and right sides all is equipped with universal wheel (2), it has first recess (3) to open in the middle of support (1) top, first recess (3) inner wall upper portion is equipped with bearing (4), install first pivot (5) on bearing (4), first pivot (5) bottom is equipped with chuck (6), its characterized in that: the device is characterized by further comprising a first swinging rod (8), a first clamping block (9), a first spring (10), a first handle (11), a first support plate (12), a sliding rod (14), a sliding block (15), a sliding rail (16), a placing box (17) and a clamping device (18), wherein a sliding groove (101) is formed in the right side of the upper portion of the front side of the support (1), the first handle (11) is arranged in the sliding groove (101) in a sliding mode, a second groove (7) is formed in the right side of the support (1), the second groove (7) is communicated with the first groove (3), the first swinging rod (8) is rotatably arranged on the rear wall of the second groove (7), the bottom end of the first swinging rod (8) is connected with the right end of the first handle (11), the first clamping block (9) is arranged at the top end of the first swinging rod (8), the first clamping block (9) is matched with the chuck (6), the first spring (10) is arranged on the upper portion of the inner wall of the second groove (7), the other end, the top of the first rotating shaft (5) is provided with a first support plate (12), the left side and the right side of the top of the first support plate (12) are respectively provided with a sliding hole (13), a sliding rod (14) is placed in the sliding hole (13), the top of the sliding rod (14) is provided with a sliding block (15), the top of the left side sliding block and the right side sliding block (15) is provided with a sliding rail (16) in a sliding mode, the top of the sliding rail (16) is provided with a placing box (17), the left side and the right side of the top of the first support plate (12) are respectively provided with a clamping device (18), the clamping devices (18) are located between the left side.

2. An instructional mobile display screen modifier according to claim 1, wherein: the clamping device (18) comprises a hollow tube (181), guide rods (183), a second spring (184) and a second clamping block (185), hollow tubes (181) are arranged on the left side and the right side of the top of the first support plate (12), the hollow tubes (181) are located between left and right slide bars (14), guide holes (182) are formed in the middle of the right end of the left hollow tube (181) and the middle of the left end of the right hollow tube (181), the guide rods (183) are placed in the hollow tubes (181), the guide rods (183) penetrate through the guide holes (182), the second clamping block (185) is arranged at the left end of the left guide rod (183) and the right end of the right guide rod (183), the second spring (184) is arranged on the inner right wall of the left hollow tube (181) and the inner left wall of the right hollow tube (181), the second spring (184) bypasses the guide rods (183), the other end of the left second spring (184) is connected with the right, the other end of the right second spring (184) is connected with the left end of the right second clamping block (185), clamping grooves (186) are uniformly formed in the right side of the left sliding rod (14) and the left side of the right sliding rod (14), and the left and right second clamping blocks (185) are respectively matched with the left and right clamping grooves (186).

3. An instructional mobile display screen modifier according to claim 2, wherein: still including fixing device (19), fixing device (19) are located the upper and lower two of placing the case (17) left and right sides respectively, including swivel nut (191), screw rod (192) and carousel (193), and the upper and lower two of placing the case (17) left and right sides are all inlayed and are equipped with swivel nut (191), are connected with screw rod (192) with the mode of screw thread in swivel nut (191), and left screw rod (192) left end and right screw rod (192) right-hand member all are equipped with carousel (193).

4. An instructional mobile display screen modifier according to claim 3, wherein: the foldable swing type folding table is characterized by further comprising a second support plate (20), a second rotating shaft (21), a gear (22), a swing handle (23) and teeth (24), the second support plate (20) is arranged on the right side of the top of the first support plate (12), the second rotating shaft (21) is rotatably arranged on the upper portion of the second support plate (20), the gear (22) is arranged at the rear end of the second rotating shaft (21), the swing handle (23) is arranged on the front portion of the second rotating shaft (21), the teeth (24) are uniformly arranged on the right side of the right sliding rod (14), and the teeth (24) are meshed with the gear (22).

5. An instructional mobile display screen modifier according to claim 4, wherein: the device comprises a support (1), a stabilizing device (25) and a universal wheel (2), wherein the stabilizing device (25) is positioned on the left side and the right side of the bottom of the support (1) and comprises a swinging seat (253), a second swinging rod (254), a clamping rod (255), a second handle (256) and a third spring (257), the upper parts of the left side and the right side of the support (1) are respectively provided with a third groove (251) and a fourth groove (252), the fourth groove (252) is positioned below the third groove (251), the left side and the right side of the bottom of the support (1) are respectively provided with the swinging seat (253), the universal wheel (2) is positioned between the swinging seats (253) on the left side and the right side, the front side of the swinging seat (253) is rotatably provided with the second swinging rod (254), the bottom of the second swinging rod (254) is contacted with the ground, the middle part of the front side of the second swinging rod (254) is rotatably provided with the clamping rod (255), the clamping rod (255) is matched with the fourth groove (252), the left clamping, the middle of the right side of the left clamping rod (255) and the middle of the left side of the right clamping rod (255) are provided with a third spring (257), and the other end of the third spring (257) is connected with the top of the second swinging rod (254).