CN114530077A - Teaching demonstration teaching aid - Google Patents

Abstract

The invention relates to a display teaching aid, in particular to a teaching display teaching aid. The invention aims to provide a teaching display teaching aid capable of conveniently erasing written contents. The invention provides a teaching and showing teaching aid, which comprises a whiteboard, a connecting rod, a rotating rod, a supporting disk, universal wheels, an erasing mechanism and the like, wherein the connecting rod is arranged in the middle of the bottom of the whiteboard, the rotating rod is rotatably arranged in the middle of the bottom of the connecting rod, the supporting disk is arranged at the bottom of the rotating rod, the four universal wheels used for moving are rotatably arranged at the bottom of the supporting disk at intervals, and the erasing mechanism used for erasing written contents is arranged in the whiteboard. According to the invention, the first protection plate is pushed to move inwards for resetting, so that the contents written on the left side and the right side of the whiteboard can be erased by the first erasing block, and thus people can erase the contents written on the left side and the right side of the whiteboard while pushing the first protection plate for resetting, thereby facilitating the operation of people and saving the time of people.

Description

Teaching demonstration teaching aid

Technical Field

The invention relates to a display teaching aid, in particular to a teaching display teaching aid.

Background

Because the most function singleness of teaching show teaching aid that has now on the market, be difficult to contrast the teaching, influence student's efficiency of giving lessons easily.

Patent application CN214587494U, granted announcement day 20211102 discloses a teaching show teaching aid, relates to teaching aid technical field, fine arts sketching easel includes base, show shelf and mounting, the show shelf is extending structure. When the teaching and displaying teaching aid is used, pictures which are possibly needed to be compared or displayed are pasted on the connecting frame in advance and placed in the cabinet body, the displaying teaching aid is pushed to a place where a lesson is needed, the displaying board is pulled open, relevant contents are written on the displaying board, the sliding sleeve is pushed upwards, the second rotating shaft is rotated to enable the second protrusion to be abutted against the first groove, the connecting frame is inserted into the connecting block, and the lesson can be given after the motor is turned on. The teaching display teaching aid can rotatably display pictures, can perform bright contrast teaching, is telescopic, occupies small volume, is convenient to move, and greatly improves the teaching efficiency of students. Although the above patent can make things convenient for people to demonstrate the teaching, people write relevant content on the show board after, when follow-up teaching is finished, need spend extra time through the manual work and wipe the content of writing on the show board, and the operation is troublesome.

Therefore, aiming at the defects, the teaching and showing teaching aid capable of conveniently erasing the written content is provided.

Disclosure of Invention

In order to overcome the defects that when most of the existing teaching display teaching aids are used by people, extra time is needed to be spent manually to erase the written contents on the display board after the teaching is finished, and the operation is troublesome, the invention provides the teaching display teaching aid which can conveniently erase the written contents.

The invention is realized by the following technical approaches:

the utility model provides a teaching show teaching aid, including the blank, the connecting rod, the bull stick, the supporting disk, the universal wheel, erase the mechanism, clamping mechanism and strike off the mechanism, be equipped with the connecting rod in the middle of the blank bottom, the rotary type is equipped with the bull stick in the middle of the connecting rod bottom, the bull stick bottom is equipped with the supporting disk, supporting disk bottom interval rotary type is equipped with four universal wheels that are used for removing, the inside erasing mechanism that is used for wiping writing the content that is equipped with of blank, it is equipped with the clamping mechanism who is used for cliping books in the mechanism to erase, be equipped with the mechanism of striking off that is used for scraping the dust that falls on the blank.

Preferably, the erasing mechanism comprises a first protection plate, a clamping block and a first erasing block, the clamping block is arranged on the upper side and the lower side of the inside of the whiteboard in a sliding mode, the clamping block is symmetrically arranged on the left side and the right side of the inside of the whiteboard in a sliding mode, the first protection plate is arranged between the inner sides of the two clamping blocks in the same vertical direction, the first erasing block is arranged on the inner side of the rear portion of the first protection plate, and the first erasing block can be in contact with the whiteboard when moving towards the inner side.

As preferred, clamping mechanism is equipped with including placing board, slider, torsion spring and splint including placing board, the equal rotary type of first guard plate front side middle part downside and places the board, and the equal slidingtype in upper and lower both sides in the anterior outside of first guard plate is equipped with the slider, and equal rotary type is equipped with splint between two slider inboards of same vertical direction, all is equipped with torsion spring between the splint of the inboard and homonymy of slider.

Preferably, strike off the mechanism including the supporting shoe, scrape the piece, return spring, the down tube, first voussoir and second voussoir, the rear portion of whiteboard left and right sides all is equipped with the supporting shoe, the anterior outside of supporting shoe all is equipped with the slidingtype and scrapes the piece, scrape the piece all with the first piece contact of wiping of homonymy, all be equipped with two return springs between the piece of scraping of the anterior outside of supporting shoe and homonymy, it is equipped with the down tube to scrape the equal longitudinal symmetry in the piece left and right sides, first guard plate rear portion outside all is equipped with first voussoir, first voussoir can contact with the down tube of homonymy when moving to the inboard, first guard plate rear portion inboard all is equipped with the second voussoir, the second voussoir all contacts with the down tube of homonymy, the second voussoir is located the inboard of first piece of wiping.

Preferably, still including the screens mechanism that is used for making first guard plate automatic re-setting, screens mechanism is including first kelly, the bracing piece, reset spring, guide bar and first extension spring, the slidingtype is equipped with the bracing piece between the inside left and right sides of blank, the equal slidingtype in bracing piece upper portion left and right sides is equipped with first kelly, all be equipped with reset spring between the first kelly of bracing piece upper portion left and right sides and homonymy, the inside downside of blank is equipped with the guide bar, first guard plate bottom inboard all is connected with guide bar slidingtype, around having first extension spring on the guide bar, first extension spring's both ends are connected with the first guard plate bottom inboard of homonymy respectively.

Preferably, the blackboard eraser further comprises a cleaning mechanism for erasing writing contents, the cleaning mechanism comprises a second clamping rod, a second erasing block, a pull rope and a second extension spring, the second clamping rod is arranged in the middle of the front portion of the whiteboard, the second erasing block is arranged on the upper side of the second clamping rod in a sliding mode, the rear side of the second erasing block is in contact with the whiteboard, the pull rope is connected to the inner side of the clamping block on the upper side, the other end of the pull rope is connected with the second erasing block, and the second extension spring is arranged between the left side and the right side of the top in the second erasing block and the whiteboard.

Preferably, still including being used for depositing the placement machine of article and construct, placement machine constructs including the support frame, places case, second guard plate and handle, and the connecting rod bottom left and right sides all is equipped with the support frame, is equipped with between the support frame top and places the case, places the anterior upside rotary type of incasement side and is equipped with the second guard plate, and second guard plate front side lower part is equipped with the handle.

Preferably, the inner sides of the tops of the first protection plates are all provided with grooves.

The invention provides a teaching demonstration teaching aid, which has the advantages that:

1. according to the book placing device, the first protection plate is pulled to move outwards, the placing plate is rotated and unfolded, so that people can place books on the placing plate, and the clamping plates clamp the books under the action of the clamping plates, so that the contents of the books can be displayed and compared conveniently.

2. According to the invention, the first protection plate is pushed to move inwards for resetting, so that the contents written on the left side and the right side of the whiteboard can be erased by the first erasing block, and thus people can erase the contents written on the left side and the right side of the whiteboard while pushing the first protection plate for resetting, thereby facilitating the operation of people and saving the time of people.

3. According to the invention, under the action of the first clamping rod and the first extension spring, after the first protection plate is pulled to move outwards, the first clamping rod can clamp the first protection plate, and the first protection plate can move inwards to reset by pushing the support rod to move upwards, so that people can conveniently move and reset the first protection plate.

4. Under the action of the placing box, the second protection plate is rotated to be opened, so that people can place articles into the placing box, and the articles can be conveniently stored by people.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a second embodiment of the present invention.

Fig. 3 is a partial perspective view of the present invention.

Fig. 4 is a schematic perspective view of an erasing mechanism according to the present invention.

Fig. 5 is a schematic perspective view of a part of the erasing mechanism of the present invention.

Fig. 6 is a schematic perspective view of the clamping mechanism of the present invention.

Fig. 7 is a schematic perspective view of a part of the clamping mechanism of the present invention.

Fig. 8 is an enlarged view of part a of the present invention.

Fig. 9 is a schematic perspective view of the scraping mechanism of the present invention.

Fig. 10 is a schematic view of a first partially separated body structure of the scraping mechanism of the present invention.

Fig. 11 is a schematic structural view of a second partial body of the scraping mechanism of the present invention.

Fig. 12 is a schematic view of a first partially separated body structure of the locking mechanism of the present invention.

Fig. 13 is a schematic view of a second partial structure of the locking mechanism of the present invention.

Fig. 14 is an enlarged view of part B of the present invention.

Fig. 15 is a schematic perspective view of the cleaning mechanism of the present invention.

Fig. 16 is a schematic perspective view of a part of the cleaning mechanism of the present invention.

Fig. 17 is a schematic perspective view of the placement mechanism of the present invention.

Reference numerals: 1_ white board, 2_ connecting rod, 3_ rotating rod, 4_ supporting plate, 5_ universal wheel, 6_ erasing mechanism, 60_ first protection plate, 61_ clamping block, 62_ first erasing block, 7_ clamping mechanism, 70_ placing plate, 71_ sliding block, 72_ torsion spring, 73_ clamping plate, 8_ scraping mechanism, 80_ supporting block, 81_ scraping block, 82_ return spring, 83_ inclined rod, 84_ first wedge block, 85_ second wedge block, 9_ clamping mechanism, 90_ first clamping rod, 91_ supporting rod, 92_ return spring, 93_ guide rod, 94_ first extension spring, 10_ cleaning mechanism, 100_ second clamping rod, 101_ second erasing block, 102_ pull rope, 103_ second extension spring, 11_ placing mechanism, 110_ supporting frame, 111_ placing box, 112_ second protection plate, and 113_ handle.

Detailed Description

The invention is further explained by combining the drawings in the specification, and the embodiments of the invention are given by combining the drawings in the specification.

Example 1

The utility model provides a teaching show teaching aid, including blank 1, connecting rod 2, bull stick 3, supporting disk 4, universal wheel 5, erase mechanism 6, clamping mechanism 7 and strike off mechanism 8, refer to fig. 1-11 and show, 1 middle welding in the bottom of blank has connecting rod 2, 2 middle rotary types in the bottom of connecting rod are equipped with bull stick 3, 3 bottoms of bull stick are equipped with supporting disk 4, 4 bottom interval rotary types of supporting disk are equipped with four universal wheels 5, under the effect of universal wheel 5, can make things convenient for people to remove this teaching show teaching aid, 1 inside of blank is equipped with erases mechanism 6, it is equipped with clamping mechanism 7 on the mechanism 6 to erase, be equipped with on blank 1 and strike off mechanism 8.

The erasing mechanism 6 comprises a first protection plate 60, a clamping block 61 and a first erasing block 62, as shown in fig. 4 and 5, the clamping blocks 61 are symmetrically arranged on the upper side and the lower side of the inside of the whiteboard 1 in a sliding mode, the first protection plate 60 is welded between the inner sides of the two clamping blocks 61 in the same vertical direction, a groove is formed in the inner side of the top of the first protection plate 60, the first erasing block 62 is arranged on the inner side of the rear portion of the first protection plate 60, the first erasing block 62 can erase the contents written on the left side and the right side of the whiteboard 1 when contacting with the whiteboard 1, and the first erasing block 62 can contact with the whiteboard 1 when moving inwards.

The clamping mechanism 7 includes a placing plate 70, a sliding block 71, a torsion spring 72 and a clamping plate 73, as shown in fig. 6, 7 and 8, the placing plate 70 is rotatably arranged on the lower side of the middle portion of the front side of the first protection plate 60, the sliding blocks 71 are slidably arranged on the upper side and the lower side of the outer side of the front portion of the first protection plate 60, the clamping plate 73 is rotatably arranged between the inner sides of the two sliding blocks 71 in the same vertical direction, the clamping plate 73 can clamp books after contacting the books, and the torsion spring 72 is arranged between the inner side of the sliding block 71 and the clamping plate 73 on the same side.

The scraping mechanism 8 includes a supporting block 80, a scraping block 81, a return spring 82, an inclined rod 83, a first wedge block 84 and a second wedge block 85, as shown in fig. 9, 10 and 11, the supporting block 80 is welded at the rear part of the left and right sides of the whiteboard 1, the scraping block 81 is slidably arranged at the outer side of the front part of the supporting block 80, when the scraping block 81 contacts with the first scraping block 62, the dust on the first scraping block 62 can be scraped off, the scraping block 81 contacts with the first scraping block 62 at the same side, two return springs 82 are arranged between the outer side of the front part of the supporting block 80 and the scraping block 81 at the same side, the inclined rods 83 are symmetrically arranged at the left and right sides of the scraping block 81, the first wedge block 84 is welded at the outer side of the rear part of the first protection plate 60, when the first wedge block 84 moves inwards, the second wedge block 85 is welded at the inner side of the rear part of the first protection plate 60, the second wedge block 85 contacts with the inclined rod 83 at the same side, the second wedge 85 is located inside the first wipe block 62.

When people need to use the teaching and showing teaching aid, firstly, the white board 1 is pushed to move, under the action of the universal wheels 5, the teaching and showing teaching aid is driven to move to a specified position, then, the white board 1 is stopped to be pushed to move, then, the white board 1 is rotated forwards and backwards, the connecting rod 2 rotates forwards and backwards, so that the orientation of the white board 1 is adjusted, after the adjustment is completed, the white board 1 is loosened, then, the first protection plate 60 is pulled to move outwards, so that the clamping block 61, the first wiping block 62, the first wedge block 84 and the second wedge block 85 are driven to move outwards, the first wiping block 62 is separated from the white board 1, when the first wedge block 84 is contacted with the inclined rod 83, the first wedge block 84 extrudes the inclined rod 83 to move backwards, the return spring 82 compresses, so that the wiping block 81 is driven to move backwards, when the first wedge block 84 is continuously moved outwards, the first wedge block 84 is contacted with the wiping block 81, when the first wiping block 62 is contacted with the inclined rod 83, the first wiping block 62 can block the inclined rod 83, when the first wiping block 62 contacts with the scraping block 81, the scraping block 81 can scrape dust on the first wiping block 62, when the first wedge 84 continues to move outwards, the inclined rod 83 and the scraping block 81 can be separated from the first wedge 84, when the second wedge 85 contacts with the inclined rod 83, the second wedge 85 can block the inclined rod 83, then the first protection plate 60 is loosened, then the placing plate 70 is rotated and unfolded, then people can start teaching, during the period, people can place books on the placing plate 70, then pull the clamping plate 73 to rotate, the torsion spring 72 is deformed, then pull the clamping plate 73 to move inwards to drive the sliding block 71 to move inwards to enable the clamping plate 73 to contact with the books, then the clamping plate 73 is loosened, under the action of the torsion spring 72, the clamping plate 73 clamps the books, so that people can conveniently display contents on the books, during the period, people can also use the chalk 1 to write on the white board for assisting teaching, after people finish teaching, the books are taken down from the placing plate 70, when the books are separated from the clamping plates 73, the torsion spring 72 is restored, the torsion spring 72 drives the clamping plates 73 to reversely reset, then the clamping plates 73 are pushed to move outwards to reset, then the placing plate 70 is reversely rotated and retracted, then the first protection plate 60 is pushed to move inwards to reset, so that the clamping blocks 61, the first wiping blocks 62, the first wedge blocks 84 and the second wedge blocks 85 are driven to move inwards to reset, the second wedge blocks 85 are separated from the inclined rods 83, when the first wiping blocks 62 are contacted with the white board 1, the first wiping blocks 62 can wipe the contents written on the left side and the right side of the white board 1, when the first wedge blocks 84 are contacted with the inclined rods 83, the first wedge blocks 84 can block the inclined rods 83, when the first wiping blocks 62 continue to move inwards, the wiping blocks 81 and the inclined rods 83 can be separated from the first wiping blocks 62, when the first wedge blocks 84 continue to move, scrape piece 81 and can separate with first voussoir 84, when down tube 83 and first voussoir 84 separation, return spring 82 reconversion, return spring 82 drives down tube 83 and scrapes piece 81 and move forward and reset, then unclamp first guard plate 60, promote whiteboard 1 again and remove to it can to push away this teaching show teaching aid.

Example 2

On the basis of embodiment 1, the whiteboard further comprises a clamping mechanism 9, wherein the clamping mechanism 9 comprises a first clamping rod 90, a supporting rod 91, a return spring 92, a guiding rod 93 and a first extension spring 94, as shown in fig. 1, fig. 2, fig. 12, fig. 13 and fig. 14, the supporting rod 91 is slidably arranged between the left side and the right side of the whiteboard 1, the first clamping rod 90 is slidably arranged on the left side and the right side of the upper portion of the supporting rod 91, the return spring 92 is disposed between the left side and the right side of the upper portion of the supporting rod 91 and the first clamping rod 90 on the same side, the guiding rod 93 is welded on the lower side of the whiteboard 1, the inner side of the bottom of the first protection plate 60 is slidably connected with the guiding rod 93, the first extension spring 94 is wound on the guiding rod 93, and the supporting rod 91 is pushed to move upward, under the action of the first extension spring 94, the first protection plate 60 can be moved inwards to be reset, and two ends of the first extension spring 94 are respectively connected with the inner side of the bottom of the first protection plate 60 on the same side.

When people pull the first protection plate 60 to move outwards, the first extension spring 94 is extended, when the first protection plate 60 is in contact with the first clamping rod 90, the first protection plate 60 presses the first clamping rod 90 to move upwards, the return spring 92 is compressed, when the first clamping rod 90 is aligned with the groove on the first protection plate 60, the return spring 92 returns to the original state, the return spring 92 drives the first clamping rod 90 to move downwards to reset, so that the first clamping rod 90 clamps the first protection plate 60, then people can release the first protection plate 60, when people need to move the first protection plate 60 inwards to reset, the support rod 91 can be pushed to move upwards, so that the first clamping rod 90 is driven to move upwards, the first clamping rod 90 is separated from the first protection plate 60, so that the first clamping rod 90 releases the first protection plate 60, at the moment, the first extension spring 94 returns to the original state, the first extension spring 94 drives the first protection plate 60 to move inwards to reset, then loosen bracing piece 91, under the effect of gravity, make bracing piece 91 and first kelly 90 remove downwards reset can to make things convenient for people to remove first guard plate 60 and reset.

The whiteboard eraser comprises a cleaning mechanism 10, the cleaning mechanism 10 comprises a second clamping rod 100, a second erasing block 101, a pulling rope 102 and a second stretching spring 103, as shown in fig. 1, 15 and 16, the second clamping rod 100 is welded in the middle of the front portion of the whiteboard 1, the second erasing block 101 is arranged on the upper side of the second clamping rod 100 in a sliding mode, when the second erasing block 101 moves, the content written in the middle of the whiteboard 1 can be erased, the rear side of the second erasing block 101 is in contact with the whiteboard 1, the pulling rope 102 is connected to the inner side of the clamping block 61 on the upper side, the other end of the pulling rope 102 is connected with the second erasing block 101, and the second stretching spring 103 is arranged between the left side and the right side of the top in the second erasing block 101 and the whiteboard 1.

When the latch 61 moves outwards, the latch 61 can pull the pull rope 102 tightly, so as to drive the second eraser block 101 to move upwards, the second extension spring 103 is extended, so that the second eraser block 101 can erase the content written in the middle of the whiteboard 1, when the latch 61 moves inwards to reset, the latch 61 can release the pull rope 102, at this time, the second extension spring 103 is restored, and the second extension spring 103 drives the second eraser block 101 to move downwards to reset, so as to facilitate people to erase the content written in the middle of the whiteboard 1.

Still including placing mechanism 11, placing mechanism 11 is including support frame 110, place case 111, second protection plate 112 and handle 113, refer to fig. 1, fig. 2 and fig. 17 and show, support frame 110 has all been welded to the 2 bottom left and right sides of connecting rod, be equipped with between the support frame 110 top and place case 111, people can put into placing case 111 with article in to deposit article, it is equipped with second protection plate 112 to place the inboard anterior upside rotary type of case 111, second protection plate 112 front side lower part is equipped with handle 113.

When people need deposit article, can stimulate handle 113 and rotate to drive second guard plate 112 and rotate and open, then people can put into article and place the case 111 in, loosen handle 113 again, this moment under the effect of gravity, second guard plate 112 and handle 113 reversal reset, when people need will place the article of depositing in the case 111 and take out, repeated above-mentioned operation can.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention.

Claims (8)

1. The utility model provides a teaching show teaching aid, including blank (1), connecting rod (2), bull stick (3), supporting disk (4) and universal wheel (5), be equipped with connecting rod (2) in the middle of blank (1) bottom, connecting rod (2) bottom middle rotary type is equipped with bull stick (3), bull stick (3) bottom is equipped with supporting disk (4), supporting disk (4) bottom interval rotary type is equipped with four universal wheel (5) that are used for removing, a serial communication port, still including erasing mechanism (6), clamping mechanism (7) and striking off mechanism (8), blank (1) inside is equipped with and is used for wiping the mechanism (6) of erasing of writing content, be equipped with clamping mechanism (7) that are used for cliping books on erasing mechanism (6), be equipped with on blank (1) and be used for striking off mechanism (8) of dust.

2. A teaching aid for teaching and showing as claimed in claim 1, wherein the erasing mechanism (6) comprises a first protection plate (60), a clamping block (61) and a first erasing block (62), the clamping block (61) is arranged on the upper side and the lower side of the inside of the whiteboard (1) in a sliding manner, the clamping block (61) is symmetrically arranged on the left and right sides of the inside of the whiteboard (1), the first protection plate (60) is arranged between the inner sides of the two clamping blocks (61) in the same vertical direction, the first erasing block (62) is arranged on the inner side of the rear portion of the first protection plate (60), and the first erasing block (62) can contact with the whiteboard (1) when moving inwards.

3. A teaching aid for teaching and display as claimed in claim 2, wherein the clamping mechanism (7) comprises a placing plate (70), a sliding block (71), a torsion spring (72) and a clamping plate (73), the placing plate (70) is rotatably arranged on the lower side of the middle part of the front side of the first protection plate (60), the sliding block (71) is slidably arranged on the upper and lower sides of the outer side of the front part of the first protection plate (60), the clamping plate (73) is rotatably arranged between the inner sides of two sliding blocks (71) in the same vertical direction, and the torsion spring (72) is arranged between the inner side of the sliding block (71) and the clamping plate (73) on the same side.

4. A teaching aid for teaching and showing as claimed in claim 3, wherein the scraping mechanism (8) comprises support blocks (80), scraping blocks (81), return springs (82), inclined rods (83), first wedge blocks (84) and second wedge blocks (85), the support blocks (80) are arranged at the rear parts of the left and right sides of the whiteboard (1), the scraping blocks (81) are arranged at the outer sides of the front parts of the support blocks (80) in a sliding manner, the scraping blocks (81) are all contacted with the first scraping blocks (62) at the same side, two return springs (82) are arranged between the outer sides of the front parts of the support blocks (80) and the scraping blocks (81) at the same side, the inclined rods (83) are symmetrically arranged at the left and right sides of the scraping blocks (81), the first wedge blocks (84) are arranged at the outer sides of the rear parts of the first protection plates (60), the first wedge blocks (84) are contacted with the inclined rods (83) at the same side when moving inwards, the inner sides of the rear parts of the first protection plates (60) are all provided with the second wedge blocks (85), the second wedge blocks (85) are all contacted with the inclined rods (83) on the same side, and the second wedge blocks (85) are positioned on the inner side of the first wiping block (62).

5. A teaching demonstration teaching aid as claimed in claim 4, further comprising a blocking mechanism (9) for automatically resetting the first protection plate (60), the blocking mechanism (9) comprising a first blocking rod (90) and a support rod (91), reset spring (92), guide bar (93) and first extension spring (94), slidingtype is equipped with bracing piece (91) between the inside left and right sides of blank (1), bracing piece (91) upper portion left and right sides all slidingtype is equipped with first kelly (90), all be equipped with reset spring (92) between bracing piece (91) upper portion left and right sides and first kelly (90) of homonymy, blank (1) inside downside is equipped with guide bar (93), first guard plate (60) bottom inboard all with guide bar (93) sliding connection, around first extension spring (94) on guide bar (93), the both ends of first extension spring (94) are connected with first guard plate (60) bottom inboard of homonymy respectively.

6. A teaching and display teaching aid as claimed in claim 5, further comprising a cleaning mechanism (10) for erasing written contents, wherein the cleaning mechanism (10) comprises a second clamping rod (100), a second wiping block (101), a pulling rope (102) and a second extension spring (103), the second clamping rod (100) is arranged in the middle of the front portion of the whiteboard (1), the second wiping block (101) is arranged on the upper side of the second clamping rod (100) in a sliding manner, the rear side of the second wiping block (101) is in contact with the whiteboard (1), the pulling rope (102) is connected to the inner side of the clamping block (61) on the upper side, the other end of the pulling rope (102) is connected with the second wiping block (101), and the second extension spring (103) is arranged between the left side and the right side of the top portion in the second wiping block (101) and the whiteboard (1).

7. A teaching display teaching aid as claimed in claim 6, further comprising a placement mechanism (11) for storing articles, wherein the placement mechanism (11) comprises a support frame (110), a placement box (111), a second protection plate (112) and a handle (113), the support frame (110) is arranged on each of the left side and the right side of the bottom of the connecting rod (2), the placement box (111) is arranged between the tops of the support frames (110), the second protection plate (112) is rotatably arranged on the upper side of the front portion of the inner side of the placement box (111), and the handle (113) is arranged on the lower portion of the front side of the second protection plate (112).

8. A teaching aid as claimed in claim 2, wherein the first guard (60) is recessed inwardly of the top thereof.

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