CN210309704U - Self-cleaning blackboard for teaching - Google Patents

Abstract

The utility model belongs to the technical field of the blackboard, especially, be a blackboard is used in automatically cleaning formula teaching, including blackboard body, blackboard body's top and the equal fixed mounting in bottom have first bar, blackboard body's both sides are equipped with first box and second box respectively, one side and blackboard body fixed connection that first box is close to blackboard body, one side that the second box is close to blackboard body is equipped with the opening, and one side of two first bar all is close to blackboard body with first box one side fixed connection, equal fixed mounting has first circular block on the top inner wall of first box and the bottom inner wall, and first rotation groove has all been seted up to one side that two first circular blocks are close to each other. The utility model discloses simple structure, the practicality is strong, through the self-cleaning blackboard, practices thrift the valuable time of having lessons, avoids artifical clean chalk bits to suck in the human body simultaneously, causes the injury to the lung.

Description

Self-cleaning blackboard for teaching

Technical Field

The utility model relates to a blackboard technical field especially relates to a blackboard is used in automatically cleaning formula teaching.

Background

The teaching aid is a general name of various appliances used by students for enabling the students to understand teaching contents visually and vividly and appliances used by teachers during teaching, a blackboard is a common tool in the teaching aid, the blackboard is a plane tool used for repeated writing and is mostly used in the aspect of teaching, the board surface of the traditional blackboard is generally ground glass or a composite material board, the traditional blackboard is used for writing on the board surface by chalk, and the characters are erased by a blackboard eraser after writing.

However, in the prior art, a large amount of powder is generated by chalk dust in the erasing process, so that teachers and front-row students frequently inhale a large amount of powder particles to cause different degrees of damage to respiratory tracts and lungs of the teachers and the front-row students, the teachers are also prone to occupational diseases of the lungs, a certain amount of time is wasted in the erasing process of chalk characters, and valuable time for class is delayed, and therefore the self-cleaning blackboard for teaching is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a self-cleaning blackboard for teaching.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a self-cleaning type teaching blackboard comprises a blackboard body, wherein first strip-shaped blocks are fixedly mounted at the top and the bottom of the blackboard body, a first box body and a second box body are respectively arranged at two sides of the blackboard body, one side of the first box body, which is close to the blackboard body, is fixedly connected with the blackboard body, one side of the second box body, which is close to the blackboard body, is provided with an opening, one sides of the two first strip-shaped blocks are fixedly connected with one side of the first box body, which is close to the blackboard body, respectively, first round blocks are fixedly mounted on the inner wall of the top and the inner wall of the bottom of the first box body, first rotating grooves are formed in one sides of the two first round blocks, a same first round rod is rotatably mounted in the two first rotating grooves, two first winding wheels are fixedly mounted on the first round rod, and second round blocks are fixedly mounted on the inner wall of the top and the inner wall of, the second round block is positioned at one side of the first round block, the two sides of the two second round blocks, which are close to each other, are provided with second rotating grooves, the two second rotating grooves are rotatably provided with the same second round rod, the second round rod is fixedly sleeved with two second reels, the winding directions of the first reel and the second reel are opposite, the first round rod is fixedly sleeved with a first round gear, the second round rod is fixedly sleeved with a second round gear, the second round gear is meshed with the first round gear, the inner wall of the bottom of the first box body is fixedly provided with a motor, the output of the motor is fixedly provided with a third round gear, the third round gear is meshed with the same second round gear, one side of each of the two first strip blocks is provided with a first sliding groove, the inner wall of the top of the first sliding groove and the inner wall of the bottom of the first sliding groove are provided with third rotating grooves, third pole is installed to two third rotating groove internal rotations, fixed cover is equipped with the idler on the third pole, the winding has wire rope on the idler, wire rope keeps away from the both ends of idler and extends to in the first box respectively and twines respectively on corresponding first reel and second reel.

Preferably, one side of blackboard body is equipped with square board, and equal slidable mounting has the slider in two first spouts, outside the slider extended to first spout near the open-ended one side of corresponding first spout, two sliders and square board were close to one side fixed connection of blackboard body.

Preferably, the first rotating groove is internally provided with a first bearing, the outer ring of the first bearing is fixedly connected with the inner wall of the corresponding first rotating groove, the inner rings of the two first bearings are fixedly connected with the first round rod, the second rotating groove is internally provided with a second bearing, the outer ring of the second bearing is fixedly connected with the inner wall of the corresponding second rotating groove, the inner rings of the two second bearings are fixedly connected with the second round rod, the third rotating groove is internally provided with a third bearing, the outer ring of the third bearing is fixedly connected with the inner wall of the corresponding third rotating groove, and the inner rings of the two third bearings are fixedly connected with the third round rod.

Preferably, one side of the square plate close to the first box body is provided with two first through holes and two second through holes, the second through holes are positioned above the first through holes, and two ends of a steel wire rope positioned on the same idler wheel respectively cross the first through holes and the second through holes and are in sliding connection with the corresponding first through holes and second through holes.

Preferably, the steel wire rope is fixedly sleeved with two clamping blocks, the two clamping blocks are respectively located on two sides of the square plate, one side, close to the blackboard body, of the square plate is fixedly provided with a blackboard eraser, one side, close to each other, of the two first strip-shaped blocks is provided with a clamping groove, an opening is formed in the inner wall, far away from the first box, of one side of the clamping groove, the top and the bottom of the second box are fixedly provided with the clamping blocks, and one side, far away from each other, of the two clamping blocks extends into the corresponding clamping groove and is matched.

Preferably, the equal fixed mounting in one side of two first bar pieces has the second bar piece, and the second spout has all been seted up to the one side that two second bar pieces are close to each other, the top and the bottom of square board all extend to in the second spout that corresponds, the top and the bottom of square board are all nested and have the ball, and two balls contact with the top inner wall and the bottom inner wall of two second spouts respectively, one side fixed mounting that blackboard body was kept away from to first box has the switch of falling in the same direction, the model of the switch of falling in the same direction is QS 60.

Compared with the prior art, the beneficial effects of the utility model are that: firstly, the device comprises a blackboard body, a first bar-shaped block, a first box body, a second box body, a first round block, a first rotating groove, a first round rod, a first reel, a second round block, a second rotating groove, a second round rod, a second reel, a first round gear, a second round gear, a motor, a third round gear, a first chute, a third rotating groove, a third round rod, an idler wheel, a steel wire, a square plate and a reversing switch which are matched, when the blackboard body needs to be cleaned in the class period, the reversing switch is firstly twisted to enable the reversing switch to start the motor to rotate in the forward direction, the motor drives the third round gear to rotate, the third round gear drives the second round gear to rotate, the second round gear drives the second round rod to rotate, the first round gear drives the first round gear to rotate, the first round rod to rotate, and when the first round rod and the second round rod rotate, the two first reels and the two second reels are respectively driven to rotate, loosen wire rope when first reel rotates, winding wire rope when the second reel rotates, under the work of idler, two fixture blocks of second reel winding wire rope pulling remove, the fixture block drives square board and slides to the direction of second box, square board drives the blackboard eraser removal, when the blackboard groove is close to the second box, the chalk bits after will cleaning impels in the second box, after the cleanness is finished, twist the switch of reversing again, make motor reverse rotation, make first reel winding wire rope, wire rope is loosened to the second reel, make square board to the direction motion of being close to first box, thereby accomplish teaching blackboard self-cleaning work.

The utility model discloses simple structure, the practicality is strong, through the self-cleaning blackboard, practices thrift the valuable time of having lessons, avoids artifical clean chalk bits to suck in the human body simultaneously, causes the injury to the lung.

Drawings

FIG. 1 is a front sectional view of the present invention;

FIG. 2 is a side cross-sectional structural view of FIG. 1;

FIG. 3 is an enlarged schematic view of portion A of FIG. 1;

FIG. 4 is an enlarged schematic view of portion B of FIG. 1;

FIG. 5 is an assembly view of the middle blackboard body, the square plate, the first bar-shaped block and the second bar-shaped block of the present invention;

FIG. 6 is an enlarged schematic view of a portion C of FIG. 5;

FIG. 7 is an assembly view of the second case, the blackboard body and the square plate of the present invention;

in the figure: 1. a blackboard body; 2. a first bar; 3. a first case; 4. a second case; 5. a first circular block; 6. a first rotating groove; 7. a first round bar; 8. a first reel; 9. a second circular block; 10. a second rotating groove; 11. a second round bar; 12. a second reel; 13. a first circular gear; 14. a second circular gear; 15. a motor; 16. a third circular gear; 17. a first chute; 18. a third rotating groove; 19. a third round bar; 20. an idler pulley; 21. a wire rope; 22. a square plate; 23. a reversing switch.

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. 1-7, the present invention provides a technical solution: a self-cleaning blackboard for teaching comprises a blackboard body 1, wherein first strip-shaped blocks 2 are fixedly arranged at the top and the bottom of the blackboard body 1, a first box body 3 and a second box body 4 are respectively arranged at two sides of the blackboard body 1, one side of the first box body 3 close to the blackboard body 1 is fixedly connected with the blackboard body 1, one side of the second box body 4 close to the blackboard body 1 is provided with an opening, one sides of the two first strip-shaped blocks 2 are fixedly connected with one side of the first box body 3 close to the blackboard body 1, first round blocks 5 are fixedly arranged on the inner wall of the top and the inner wall of the bottom of the first box body 3, one sides of the two first round blocks 5 close to each other are respectively provided with a first rotating groove 6, the same first round rod 7 is rotatably arranged in the two first rotating grooves 6, two first winding wheels 8 are fixedly sleeved on the first round rod 7, and second round blocks 9 are fixedly arranged on the inner wall of the top and the inner wall of the bottom, the second circular block 9 is positioned at one side of the first circular block 5, one side of the two second circular blocks 9 close to each other is provided with a second rotating groove 10, the two second rotating grooves 10 are rotatably provided with a same second circular rod 11, the second circular rod 11 is fixedly sleeved with two second reels 12, the winding directions of the first reels 8 and the second reels 12 are opposite, the first circular rod 7 is fixedly sleeved with a first circular gear 13, the second circular rod 11 is fixedly sleeved with a second circular gear 14, the second circular gear 14 is meshed with the first circular gear 13, the bottom inner wall of the first box body 3 is fixedly provided with a motor 15, the output of the motor 15 is fixedly provided with a third circular gear 16, the third circular gear 16 is meshed with the same second circular gear 14, one side of the two first rods 2 is provided with a first sliding groove 17, the top inner wall and the bottom inner wall of the first sliding groove 17 are provided with third rotating grooves 18, a third round rod 19 is rotatably mounted in the two third rotating grooves 18, an idler wheel 20 is fixedly sleeved on the third round rod 19, a steel wire rope 21 is wound on the idler wheel 20, and two ends, far away from the idler wheel 20, of the steel wire rope 21 respectively extend into the first box body 3 and are respectively wound on the corresponding first reel 8 and the second reel 12;

one side of the blackboard body 1 is provided with a square plate 22, sliders are arranged in the two first sliding grooves 17 in a sliding manner, one side of each slider, which is close to the opening of the corresponding first sliding groove 17, extends out of the corresponding first sliding groove 17, the two sliders and one side of the square plate 22, which is close to the blackboard body 1, are fixedly connected, so that the square plate 22 can only slide left and right and cannot move up and down, a first bearing is arranged in the first rotating groove 6, the outer ring of the first bearing is fixedly connected with the inner wall of the corresponding first rotating groove 6, the inner rings of the two first bearings are fixedly connected with the first round rod 7, a second bearing is arranged in the second rotating groove 10, the outer ring of the second bearing is fixedly connected with the inner wall of the corresponding second rotating groove 10, the inner rings of the two second bearings are fixedly connected with the second round rod 11, a third bearing is arranged in the third rotating groove 18, the outer ring of the third bearing is fixedly connected with the inner wall of the, the inner rings of the two third bearings are fixedly connected with a third round rod 19, so that the first round rod 7, the second round rod 11 and the third round rod 18 can only rotate, one side of the square plate 22 close to the first box body 3 is provided with two first through holes and two second through holes, the second through holes are positioned above the first through holes, two ends of a steel wire rope 21 positioned on the same idler wheel 20 respectively cross the first through holes and the second through holes and are in sliding connection with the corresponding first through holes and second through holes, the steel wire rope 21 is fixedly sleeved with two clamping blocks, the two clamping blocks are respectively positioned at two sides of the square plate 22, one side of the square plate 22 close to the blackboard body 1 is fixedly provided with a blackboard eraser, one side of the two first strip-shaped blocks 2 close to each other is provided with a clamping groove, the inner wall of one side of the clamping groove far away from the first box body 3 is provided with an opening, the top and the bottom of the second box body 4 are fixedly provided with clamping blocks, one side of the, thereby make second box 4 can dismantle, the chalk bits of the convenient clean inside, the equal fixed mounting in one side of two first bar-shaped blocks 2 has the second bar-shaped block, the second spout has all been seted up to the one side that two second bar-shaped blocks are close to each other, square plate 22's top and bottom all extend to in the second spout that corresponds, square plate 22's top and bottom all are nested there is the ball, two balls contact with the top inner wall and the bottom inner wall of two second spouts respectively, one side fixed mounting that first box 3 kept away from blackboard body 1 has reversing switch 23, reversing switch 23's model is QS60, reversing switch 23, external power source and motor 15 constitute closed loop through wire electric connection in proper order, through blackboard body 1, first bar-shaped block 2, first box 3, second box 4, first circular block 5, first rotation groove 6, first round bar 7, first reel 8, The second round block 9, the second rotating groove 10, the second round rod 11, the second reels 12, the first round gear 13, the second round gear 14, the motor 15, the third round gear 16, the first chute 17, the third rotating groove 18, the third round rod 19, the idle wheel 20, the steel wire 21, the square plate 22 and the reversing switch 23 are matched, when the blackboard body 1 needs to be cleaned during the class, the reversing switch 23 is firstly twisted to enable the reversing switch 23 to start the motor 15 to rotate in the forward direction, the motor 15 drives the third round gear 16 to rotate, the third round gear 16 drives the second round gear 14 to rotate, the second round gear 14 drives the second round rod 11 to rotate, the second round gear 14 drives the first round gear 13 to rotate, the first round gear 13 drives the first round rod 7 to rotate, when the first round rod 7 and the second round rod 11 rotate, the two first reels 8 and the two second reels 12 are respectively driven to rotate, when the first reel 8 rotates, the wire rope 21 is loosened, when the second reel 12 rotates, the wire rope 21 is wound, under the operation of the idler wheel 20, the wire rope 21 is wound on the second reel 12 to pull the two clamping blocks to move, the clamping blocks drive the square plate 22 to slide towards the second box body 4, the square plate 22 drives the blackboard eraser to move, when the blackboard slot is close to the second box body 4, the cleaned chalk scraps are pushed into the second box body 4, after the cleaning is finished, the reversing switch 23 is twisted to enable the motor 15 to rotate reversely, the first reel 8 is made to wind the wire rope 21, the second reel 12 loosens the wire rope 21, the square plate 22 is made to move towards the direction close to the first box body 3, and therefore the automatic cleaning work of the teaching blackboard is finished, the utility model has the advantages of simple structure and strong practicability, through the automatic cleaning of the blackboard, the precious time on class is saved, and meanwhile, the manual cleaning of, causing damage to the lungs.

The working principle is as follows: when the blackboard body 1 needs to be cleaned in class, firstly, the reversing switch 23 is twisted to enable the reversing switch 23 to start the motor 15 to rotate in the forward direction, the motor 15 drives the third circular gear 16 to rotate, the third circular gear 16 drives the second circular gear 14 to rotate, the second circular gear 14 drives the second circular rod 11 to rotate in the two second rotating grooves 10, the second circular gear 14 drives the first circular gear 13 to rotate when rotating, the first circular gear 13 drives the first circular rod 7 to rotate in the two first rotating grooves 6, when the first circular rod 7 and the second circular rod 11 rotate, the two first reels 8 and the two second reels 12 are respectively driven to rotate, when the first reels 8 rotate, the steel wire rope 21 is loosened, when the second reels 12 rotate, the steel wire rope 21 is wound, under the work of the idle wheel 20, the two clamping blocks are respectively pulled to move by the second reels 12 in a way, under the combined action of the sliding block and the first sliding groove 17, the fixture block drives the square plate 22 to slide stably in the direction of the second box body 4, the square plate 22 drives the blackboard eraser to move, when the blackboard groove is close to the second box body 4, chalk scraps after cleaning are pushed into the second box body 4, after the cleaning is finished, the reversing switch 23 is twisted again, the motor 15 rotates reversely, the first reel 8 is made to wind the steel wire rope 21, the second reel 12 loosens the steel wire rope 21, the square plate 22 moves in the direction close to the first box body 3, and therefore the automatic cleaning work of the teaching blackboard is completed.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a blackboard is used in teaching of automatically cleaning formula, includes blackboard body (1), its characterized in that: the blackboard comprises a blackboard body (1), wherein first strip-shaped blocks (2) are fixedly mounted at the top and the bottom of the blackboard body (1), a first box body (3) and a second box body (4) are respectively arranged at two sides of the blackboard body (1), one side of the first box body (3) close to the blackboard body (1) is fixedly connected with the blackboard body (1), one side of the second box body (4) close to the blackboard body (1) is provided with an opening, one sides of the two first strip-shaped blocks (2) are fixedly connected with one side of the first box body (3) close to the blackboard body (1), first round blocks (5) are fixedly mounted on the inner wall of the top and the inner wall of the bottom of the first box body (3), first rotating grooves (6) are respectively formed in one side of the two first round blocks (5) close to each other, the same first round rod (7) is rotatably mounted in the two first rotating grooves (6), and two first winding wheels (8) are fixedly mounted on the first round rod (7, the top inner wall and the bottom inner wall of the first box body (3) are fixedly provided with a second round block (9), the second round block (9) is positioned at one side of the first round block (5), one side of the two second round blocks (9) close to each other is provided with a second rotating groove (10), the two second rotating grooves (10) are rotatably provided with a same second round rod (11), the second round rod (11) is fixedly sleeved with two second reels (12), the winding directions of the first reels (8) and the second reels (12) are opposite, the first round rod (7) is fixedly sleeved with a first round gear (13), the second round rod (11) is fixedly sleeved with a second round gear (14), the second round gear (14) is meshed with the first round gear (13), the bottom inner wall of the first box body (3) is fixedly provided with a motor (15), fixed mounting has third circular gear (16) on the output of motor (15), third circular gear (16) and same second circular gear (14) meshing, first spout (17) have all been seted up to one side of two first bar-shaped blocks (2), third rotation groove (18) have all been seted up on the top inner wall of first spout (17) and on the bottom inner wall, and third round bar (19) are installed to two third rotation groove (18) internal rotations, fixed cover is equipped with idler (20) on third round bar (19), the winding has wire rope (21) on idler (20), wire rope (21) are kept away from the both ends of idler (20) and are extended to in first box (3) respectively and twine respectively on corresponding first reel (8) and second reel (12).

2. The self-cleaning teaching blackboard of claim 1, wherein: one side of blackboard body (1) is equipped with square board (22), and equal slidable mounting has the slider in two first spout (17), outside the slider extended to first spout (17) near corresponding first spout (17) open-ended one side, one side fixed connection that two sliders and square board (22) are close to blackboard body (1).

3. The self-cleaning teaching blackboard of claim 1, wherein: the inner ring of the first bearing is fixedly connected with the inner wall of the corresponding first rotating groove (6), the inner rings of the two first bearings are fixedly connected with the first round rod (7), the second bearing is arranged in the second rotating groove (10), the outer ring of the second bearing is fixedly connected with the inner wall of the corresponding second rotating groove (10), the inner rings of the two second bearings are fixedly connected with the second round rod (11), the third rotating groove (18) is internally provided with a third bearing, the outer ring of the third bearing is fixedly connected with the inner wall of the corresponding third rotating groove (18), and the inner rings of the two third bearings are fixedly connected with the third round rod (19).

4. The self-cleaning teaching blackboard of claim 2, wherein: two first through holes and two second through holes are formed in one side, close to the first box body (3), of the square plate (22), the second through holes are located above the first through holes, and two ends of a steel wire rope (21) located on the same idler wheel (20) respectively penetrate through the first through holes and the second through holes and are in sliding connection with the corresponding first through holes and the second through holes.

5. The self-cleaning teaching blackboard of claim 1, wherein: the blackboard eraser is characterized in that two clamping blocks are fixedly sleeved on the steel wire rope (21), the two clamping blocks are respectively located on two sides of the square plate (22), one side, close to the blackboard body (1), of the square plate (22) is fixedly provided with the blackboard eraser, one side, close to each other, of the two first strip-shaped blocks (2) is provided with a clamping groove, an opening is formed in the inner wall, away from the first box body (3), of one side of the clamping groove, the top and the bottom of the second box body (4) are fixedly provided with the clamping blocks, and one side, away from each other, of the two clamping blocks extends into the corresponding clamping.

6. The self-cleaning teaching blackboard of claim 2, wherein: the equal fixed mounting in one side of two first bar (2) has the second bar, and the second spout has all been seted up to one side that two second bars are close to each other, the top and the bottom of square board (22) all extend to in the second spout that corresponds, the top and the bottom of square board (22) all are nested there is the ball, and two balls contact with the top inner wall and the bottom inner wall of two second spouts respectively, one side fixed mounting that blackboard body (1) was kept away from in first box (3) has switch (23) of falling in the same direction, the model of switch (23) of falling in the same direction is QS 60.

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