CN211567457U

CN211567457U - Can erase teaching of writing fast and use dustproof formula blackboard

Info

Publication number: CN211567457U
Application number: CN201922077968.5U
Authority: CN
Inventors: 曹冲; 刘波
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-09-25
Anticipated expiration: 2029-11-27

Abstract

The utility model discloses a but teaching of erasing writing fast is with dustproof formula blackboard, including blackboard main part and blackboard eraser, the up end welding of blackboard main part has the second fixed plate, the lower terminal surface welding of blackboard main part has first fixed plate, be connected with the blackboard eraser between first fixed plate and the second fixed plate, the inboard swing joint of first fixed plate has first gyro wheel, the inboard swing joint of second fixed plate has the second gyro wheel, the intermediate junction of first gyro wheel has the spliced pole, the intermediate junction of second gyro wheel has the spliced pole, the positive terminal surface welding of spliced pole has the connecting rod, the terminal surface is connected with the spring under the inboard of connecting rod, the inboard of connecting rod is connected with the slider, the upper end of spring is connected on the slider. The utility model discloses a set up first gyro wheel, blackboard eraser, stopper, second gyro wheel, centrifugal fan, spacing groove and micropore sponge structure, solved and have the typeface to erase the typeface on the blackboard through small-size blackboard eraser and erase the problem that inefficiency and blackboard eraser are inconvenient to be deposited.

Description

Can erase teaching of writing fast and use dustproof formula blackboard

Technical Field

The utility model relates to a teaching aid technical field specifically is a but teaching of erasing writing fast is with dustproof formula blackboard.

Background

Teaching aid, make the student understand the apparatus of all kinds that the teaching content used and the apparatus that the teacher used when giving lessons directly perceivedly, vividly, wherein, the blackboard is the most common one in the teaching aid, the teacher can carry out blackboard writing, drawing etc. on the blackboard, when the content on the blackboard does not need, the teacher needs to erase the typeface or drawing on the blackboard, and the current mode is to erase the typeface or drawing on the blackboard through the human hand small-size blackboard eraser of taking, but, there is the typeface that the efficiency is low and the inconvenient problem of depositing of blackboard eraser through the mode of small-size blackboard eraser erasing the typeface on the blackboard.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a but teaching of erasing writing fast is with dustproof formula blackboard has solved and has had the typeface to erase the problem that inefficiency and the inconvenient deposit of blackboard eraser are erased to the typeface on the blackboard through the mode that the blackboard eraser was erased.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a dustproof blackboard capable of quickly erasing handwriting for teaching comprises a blackboard main body and an eraser, wherein a second fixing plate is welded on the upper end face of the blackboard main body, a first fixing plate is welded on the lower end face of the blackboard main body, the eraser is connected between the first fixing plate and the second fixing plate, a first roller is movably connected on the inner side of the first fixing plate, a second roller is movably connected on the inner side of the second fixing plate, a connecting column is connected in the middle of the first roller, a connecting column is connected in the middle of the second roller, a connecting rod is welded on the positive end face of the connecting column, a spring is connected on the inner side of the connecting rod, a slider is connected on the inner side of the connecting rod, the upper end of the spring is connected on the slider, a vertical rod is welded in the middle of the lower end face of the slider, the vertical rod penetrates through the connecting rod, and, the blackboard eraser is characterized in that a miniature battery, a handle and a button switch are sequentially arranged on the upper end face of the blackboard eraser from left to right, the lower end face of the blackboard eraser is connected with a mounting plate, a dust collecting cavity is formed in the blackboard eraser, the upper end face of the inner side of the dust collecting cavity is connected with a centrifugal fan, a dust cover is arranged on the outer side of the centrifugal fan, and limiting grooves are symmetrically formed in the left end face and the right end face of the blackboard eraser.

Preferably, the left portion of the first fixing plate is in threaded connection with a first bolt in an up-down symmetrical mode, the right portion of the first fixing plate is in threaded connection with a first bolt in an up-down symmetrical mode, and the front face of the first fixing plate is provided with a first groove.

Preferably, the left portion of the second fixing plate is in threaded connection with a first bolt in an up-down symmetrical mode, the right portion of the second fixing plate is in threaded connection with a first bolt in an up-down symmetrical mode, and the front face of the second fixing plate is provided with a second notch.

Preferably, the left end surface and the right end surface of the eraser are symmetrically in threaded connection with second bolts, and the second bolts penetrate through the eraser and extend to the mounting plate.

Preferably, a bearing is arranged at the joint of the connecting column and the first roller, a bearing is arranged at the joint of the connecting column and the second roller, the connecting column penetrates through the first slot, and the connecting column penetrates through the second slot.

Preferably, the left side wall and the right side wall of the inner part of the connecting rod are symmetrically provided with sliding grooves, and the sliding blocks are connected to the inner sides of the sliding grooves in a sliding mode.

Preferably, the mounting plate is provided with through holes at equal intervals, and the lower end face of the mounting plate is bonded with microporous sponge.

(III) advantageous effects

The utility model provides a but teaching of erasing writing fast is with preventing raise dust formula blackboard possesses following beneficial effect:

the utility model discloses, first gyro wheel through setting up, the blackboard eraser, the through-hole, the stopper, the second gyro wheel, a handle, centrifugal fan, spacing groove and micropore sponge structure, open centrifugal fan through button switch, make the dust get into through the through-hole and gather dirt the chamber, and then can avoid the dust to fly upward everywhere, hold the handle with the hand, apply external force to the handle, can make first gyro wheel and second gyro wheel roll, and then can make the blackboard eraser remove, and then accessible micropore sponge erases the typeface in the blackboard main part, the top of blackboard eraser equals with the width of blackboard main part, and then the single just can erase the typeface in the blackboard main part, and then improved the efficiency of erasing the typeface, peg graft the inboard at the spacing groove with the stopper, and then can connect the blackboard eraser between first fixed plate and second fixed plate, and then make things convenient for depositing of blackboard eraser, the mode of having solved and having erased the typeface on the blackboard through small-size blackboard has the question of erasing inefficiency and inconvenient depositing of erasing the typeface To give a title.

Drawings

FIG. 1 is a schematic structural view of an eraser according to the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is an enlarged schematic view of a structure at a position in fig. 2 according to the present invention.

The reference numbers in the figures are: 1. a first fixing plate; 2. a first slot; 3. a blackboard main body; 4. a first roller; 5. erasing the blackboard; 6. a through hole; 7. a second fixing plate; 8. a second slot; 9. a limiting block; 10. a spring; 11. a connecting rod; 12. a bearing; 13. connecting columns; 14. a second roller; 15. a first bolt; 16. a chute; 17. a slider; 18. a micro battery; 19. a handle; 20. a push button switch; 21. a centrifugal fan; 22. a dust cover; 23. a dust collecting cavity; 24. a limiting groove; 25. a microporous sponge; 26. mounting a plate; 27. a vertical rod; 28. and a second bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides an embodiment: a dust-proof blackboard capable of quickly erasing handwriting for teaching comprises a blackboard main body 3 and an eraser 5, wherein a second fixing plate 7 is welded on the upper end face of the blackboard main body 3, a first fixing plate 1 is welded on the lower end face of the blackboard main body 3, the eraser 5 is connected between the first fixing plate 1 and the second fixing plate 7, a first roller 4 is movably connected to the inner side of the first fixing plate 1, a second roller 14 is movably connected to the inner side of the second fixing plate 7, a connecting column 13 is connected to the middle of the first roller 4, a connecting column 13 is connected to the middle of the second roller 14, a connecting rod 11 is welded on the positive end face of the connecting column 13, a spring 10 is connected to the lower end face of the inner side of the connecting rod 11, a sliding block 17 is connected to the inner side of the connecting rod 11, the upper end of the spring 10 is connected to the sliding block 17, a vertical rod 27 is welded in the middle, the upper end surface of the blackboard eraser 5 is sequentially provided with a micro battery 18, a handle 19 and a button switch 20 from left to right, the lower end surface of the blackboard eraser 5 is connected with a mounting plate 26, a dust collecting cavity 23 is formed in the blackboard eraser 5, the upper end surface of the inner side of the dust collecting cavity 23 is connected with a centrifugal fan 21, the outer side of the centrifugal fan 21 is provided with a dust cover 22, the left end surface and the right end surface of the blackboard eraser 5 are symmetrically provided with limiting grooves 24, the type of the micro battery 18 is 4D1400, the type of the button switch 20 is HSD16A-P, the type of the centrifugal fan 21 is SFT, and the micro battery, the handle and the button switch.

Further, the left part of the first fixing plate 1 is in threaded connection with a first bolt 15 in a vertically symmetrical manner, the right part of the first fixing plate 1 is in threaded connection with a first bolt 15 in a vertically symmetrical manner, the front surface of the first fixing plate 1 is provided with a first slot 2, and the first bolt 15 of the design accessible is fixedly arranged on a designated position.

Further, the left portion of the second fixing plate 7 is in threaded connection with a first bolt 15 in a vertically symmetrical mode, the right portion of the second fixing plate 7 is in threaded connection with a first bolt 15 in a vertically symmetrical mode, the front face of the second fixing plate 7 is provided with a second notch 8, and the second fixing plate 7 can be fixedly installed at a designated position through the first bolt 15 in the design mode.

Further, the left end face and the right end face of the eraser 5 are symmetrically in threaded connection with second bolts 28, the second bolts 28 penetrate through the eraser 5 and extend to the mounting plate 26, the eraser 5 and the mounting plate 26 are detachably connected through the design, and the eraser 5 and the mounting plate 26 can be detached and separated.

Further, the bearing 12 is arranged at the joint of the connecting column 13 and the first roller 4, the bearing 12 is arranged at the joint of the connecting column 13 and the second roller 14, the design reduces the friction force between the connecting column 13 and the first roller 4, the friction force between the connecting column 13 and the second roller 14 is reduced, and further the rolling of the first roller 4 and the second roller 14 is facilitated, the connecting column 13 penetrates through the first slot 2, the connecting column 13 penetrates through the second slot 8, and the design enables the connecting column 13 not to be blocked when the connecting column 13 is moved leftwards and rightwards.

Further, the sliding grooves 16 are symmetrically formed in the left side wall and the right side wall of the connecting rod 11, the sliding blocks 17 are connected to the inner sides of the sliding grooves 16 in a sliding mode, and the sliding blocks 17 can move on the inner sides of the sliding grooves 16 and further can move on the inner sides of the connecting rod 11.

Further, through holes 6 are formed in the mounting plate 26 at equal intervals, microporous sponge 25 is bonded to the lower end face of the mounting plate 26, and dust can enter the dust collecting cavity 23 through the arranged through holes 6.

The working principle is as follows: when the blackboard eraser is used, a user holds the blackboard eraser 5 with a hand, the limiting groove 24 on the right end surface of the blackboard eraser 5 is aligned with the limiting block 9 on the second fixing plate 7, then the user applies upward external force to the blackboard eraser 5 to enable the blackboard eraser 5 to move upwards, the limiting block 9 on the right end surface of the blackboard eraser 5 enters the inner side of the limiting groove 24, the sliding block 17 moves upwards on the inner side of the sliding groove 16 to enable the spring 10 to stretch, the vertical rod 27 moves upwards to enable the limiting block 9 to move upwards, then the user holds the limiting block 9 on the first fixing plate 1 with the hand, then downward external force is applied to the limiting block 9 on the first fixing plate 1 to enable the sliding block 17 to move downwards on the inner side of the sliding groove 16, the spring 10 is compressed, the vertical rod 27 moves downwards to enable the limiting block 9 to move downwards until the limiting block 9 on the first fixing plate 1 is aligned with, then the user loosens the limit block 9 on the first fixing plate 1, so that the spring 10 is stretched, so that the sliding block 17 moves upwards on the inner side of the sliding groove 16, so that the vertical rod 27 moves upwards, so that the limit block 9 on the first fixing plate 1 enters the inner side of the limit groove 24 on the left end surface of the eraser 5, then the user fixedly installs the first fixing plate 1 and the second fixing plate 7 on the designated position through the first bolt 15, when the characters on the blackboard main body 3 need to be erased, the user presses the button switch 20 with the hand, so that the centrifugal fan 21 is opened, then the user holds the handle 19 with the hand, then applies a leftward external force to the handle 19, so that the first roller 4 and the second roller 14 roll, so that the connecting rod 13 moves, so that the connecting rod 11 moves, so that the vertical rod 27 moves, so that the limit block 9 moves, so that the eraser 5 moves, in the moving process of, erasing the fonts on the blackboard main body 3 through the microporous sponge 25, simultaneously, the dust enters the dust collecting cavity 23 through the through hole 6, when the dust in the dust collecting cavity 23 needs to be cleared, the user applies external force to the second bolt 28 by using a screwdriver, so that the second bolt 28 is loosened until the second bolt 28 leaves the mounting plate 26, then the mounting plate 26 is taken down from the blackboard eraser 5 by the user, and then the dust in the dust collecting cavity 23 is cleared up by the user.

To sum up can, the utility model discloses a set up first gyro wheel 4, blackboard eraser 5, through-hole 6, stopper 9, second gyro wheel 14, handle 19, centrifugal fan 21, spacing groove 24 and micropore sponge 25 structure, solved and have the typeface to erase the mode that the typeface on the blackboard was erased through small-size blackboard eraser and erase the problem that inefficiency and blackboard eraser were inconvenient to be deposited.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a but teaching of quick erase writing is with preventing raise dust formula blackboard, includes blackboard main part (3) and blackboard eraser (5), its characterized in that: the blackboard comprises a blackboard body (3), and is characterized in that a second fixing plate (7) is welded on the upper end face of the blackboard body (3), a first fixing plate (1) is welded on the lower end face of the blackboard body (3), a blackboard eraser (5) is connected between the first fixing plate (1) and the second fixing plate (7), a first roller (4) is movably connected on the inner side of the first fixing plate (1), a second roller (14) is movably connected on the inner side of the second fixing plate (7), a connecting column (13) is connected in the middle of the first roller (4), a connecting column (13) is connected in the middle of the second roller (14), a connecting rod (11) is welded on the positive end face of the connecting column (13), a spring (10) is connected on the inner side of the connecting rod (11), a slider (17) is connected on the inner side of the connecting rod (11), and the upper end of the spring, the welding has montant (27) in the middle of the lower terminal surface of slider (17), montant (27) run through connecting rod (11), the lower terminal surface welding of montant (27) has stopper (9), the up end of blackboard eraser (5) has from left to right set gradually micro battery (18), handle (19) and button switch (20), the lower terminal surface of blackboard eraser (5) is connected with mounting panel (26), the inside of blackboard eraser (5) has been seted up and has been gathered dirt chamber (23), the inboard up end that gathers dirt chamber (23) is connected with centrifugal fan (21), the outside of centrifugal fan (21) is provided with dust cover (22), spacing groove (24) have been seted up to the both ends symmetry about blackboard eraser (5).

2. The dust-proof blackboard capable of erasing writing rapidly according to claim 1, characterized in that: the left part of first fixed plate (1) is symmetry threaded connection from top to bottom has first bolt (15), the right part of first fixed plate (1) is symmetry threaded connection from top to bottom has first bolt (15), first fluting (2) have been seted up in the front of first fixed plate (1).

3. The dust-proof blackboard capable of erasing writing rapidly according to claim 1, characterized in that: the left part of the second fixing plate (7) is in threaded connection with a first bolt (15) in an up-down symmetrical mode, the right part of the second fixing plate (7) is in threaded connection with a first bolt (15) in an up-down symmetrical mode, and the front face of the second fixing plate (7) is provided with a second notch (8).

4. The dust-proof blackboard capable of erasing writing rapidly according to claim 1, characterized in that: the left end face and the right end face of the blackboard eraser (5) are symmetrically in threaded connection with second bolts (28), and the second bolts (28) penetrate through the blackboard eraser (5) and extend to the mounting plate (26).

5. The dust-proof blackboard capable of erasing writing rapidly according to claim 1, characterized in that: the connecting structure is characterized in that a bearing (12) is arranged at the joint of the connecting column (13) and the first roller (4), the bearing (12) is arranged at the joint of the connecting column (13) and the second roller (14), the connecting column (13) penetrates through the first slot (2), and the connecting column (13) penetrates through the second slot (8).

6. The dust-proof blackboard capable of erasing writing rapidly according to claim 1, characterized in that: the inside left and right sides lateral wall symmetry of connecting rod (11) has seted up spout (16), slider (17) sliding connection is in the inboard of spout (16).

7. The dust-proof blackboard capable of erasing writing rapidly according to claim 4, wherein: through-holes (6) are formed in the mounting plate (26) at equal intervals, and microporous sponge (25) is bonded to the lower end face of the mounting plate (26).