CN110422000B - Clean effectual electronic teaching aid of hand-held type - Google Patents
Clean effectual electronic teaching aid of hand-held type Download PDFInfo
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- CN110422000B CN110422000B CN201910675323.3A CN201910675323A CN110422000B CN 110422000 B CN110422000 B CN 110422000B CN 201910675323 A CN201910675323 A CN 201910675323A CN 110422000 B CN110422000 B CN 110422000B
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- hole
- main body
- access cover
- transmission shaft
- air inlet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L21/00—Blackboard or slate cleaning devices
- B43L21/04—Wiper holders
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- Cleaning In General (AREA)
Abstract
The invention relates to a hand-held electric teaching tool with good wiping effect, which comprises a main body, an access cover and a first rotary brush, wherein the main body is in a cuboid shape, one side of the main body is provided with an access hole, the access cover is matched with the access hole, the access cover is arranged in the access hole, the first rotary brush is arranged on one side of the main body, which is far away from the access cover, a driving mechanism and a dust collecting mechanism are arranged in the main body, the driving mechanism comprises a driving motor, a transmission shaft and a connecting hole, the dust collecting mechanism comprises a collecting box, an exhaust pipe, an exhaust pump, a filter screen and at least two air inlet components, the hand-held electric teaching tool with good wiping effect realizes the function of driving the first rotary brush and the second rotary brush to reversely rotate through the driving mechanism, the wiping effect is improved, and the function of collecting chalk dust generated in the wiping process is realized through the dust collecting mechanism, avoiding the harm of dust.
Description
Technical Field
The invention relates to the field of teaching tools, in particular to a handheld electric teaching tool with a good wiping effect.
Background
The teaching aid is a general name of various appliances used by students for visually and vividly understanding teaching contents and appliances used by teachers during teaching, is called teaching aid for short, generally comprises a common teaching aid, a special teaching aid and a child teaching aid, and the blackboard eraser is one of the common teaching aids and is a tool for wiping chalk characters on a blackboard clean.
The existing blackboard eraser is single in wiping mode in the using process, chalk characters can be wiped cleanly only through multiple wiping, the wiping effect is poor, and moreover, when chalk marks are wiped by the blackboard eraser, dust flies around, teaching and environment pollution are affected, and the main component of chalk dust is calcium carbonate or calcium sulfate, so that the dust easily causes harm to lungs, upper respiratory tracts, eyes, ears and skins of teachers and students.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the handheld electric teaching aid with good wiping effect is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a hand-held electric teaching tool with a good wiping effect comprises a main body, an access cover and a first rotary brush, wherein the main body is in a cuboid shape, one side of the main body is provided with an access hole, the access cover is matched with the access hole, the access cover is arranged in the access hole, the first rotary brush is arranged on one side of the main body, which is far away from the access cover, and a driving mechanism and a dust collecting mechanism are arranged in the main body;
the driving mechanism comprises a driving motor, a transmission shaft and a connecting hole, the connecting hole is formed in one side, far away from the access hole, of the main body, the axis of the connecting hole is perpendicular to the plane where the side, provided with the connecting hole, of the main body is located, the aperture of the connecting hole is equal to the diameter of the transmission shaft, the transmission shaft penetrates through the connecting hole, the transmission shaft and the connecting hole are connected in a sliding and sealing mode, the first rotating brush is installed at one end of the transmission shaft, the driving motor is connected with the other end of the transmission shaft in a transmission mode, the driving motor is fixed on the inner wall of the main body, and a gap is formed between the driving motor and the access cover;
the dust collection mechanism comprises a collection box, an exhaust pipe, an exhaust pump, a filter screen and at least two air inlet components, wherein the collection box is cuboid, the collection box is positioned between a driving motor and an access cover, the collection box is fixed on the access cover, the exhaust pipe is arranged on one side of the collection box and is communicated with the collection box, the exhaust pump is arranged on the exhaust pipe, the filter screen is arranged on the exhaust pipe, an air outlet is formed in the main body, the air outlet is positioned on one side of the main body, which is far away from the exhaust pipe, the driving motor is positioned between the exhaust pipe and the air outlet, and the air inlet components are circumferentially and uniformly distributed on one side, which is close to the driving motor, of the collection box by taking the axis of the transmission shaft as the center;
the air inlet assembly comprises an air inlet pipe, a one-way valve, a through hole and an assembly hole, wherein the assembly hole is formed in one side, away from the access cover, of the main body, the through hole is formed in one side, close to the driving motor, of the collecting box, the axis of the through hole is parallel to the axis of the transmission shaft, the assembly hole is coaxially arranged with the through hole, the aperture of the through hole is equal to that of the assembly hole, the air inlet pipe is coaxially arranged with the through hole, the outer diameter of the air inlet pipe is equal to that of the through hole, the air inlet pipe penetrates through the through hole, the air inlet pipe is connected with the through hole in a sliding and sealing mode, one end, away from the access cover, of the air inlet pipe is arranged in the assembly hole, the air inlet pipe is connected with the inner wall of the assembly hole in a sealing mode and is fixedly connected with the collecting box, and the air inlet pipe is communicated with the collecting box.
Preferably, in order to improve the wiping effect, an auxiliary assembly is arranged in the main body, the auxiliary assembly comprises a driving gear and at least two auxiliary units, the driving gear is mounted on the transmission shaft, the auxiliary units correspond to the air inlet pipe in a one-to-one manner, the auxiliary units are located between the driving gear and the air inlet pipe, the auxiliary units comprise driven gears, rotating shafts, bearings, second rotary brushes and mounting holes, the mounting holes are formed in one side, far away from the access cover, of the main body, the rotating shafts are parallel to the transmission shaft, the bearings are located in the mounting holes, the rotating shafts penetrate through the mounting holes, inner rings of the bearings are mounted on the rotating shafts, outer rings of the bearings are hermetically and fixedly connected with inner walls of the mounting holes, the driven gears are mounted at one end, close to the access cover, of the rotating shafts, the second rotary brushes are mounted at the other end of the rotating shafts, the driving gear is meshed with the driven gear.
Preferably, the drive gear is coated with a lubricating oil in order to reduce the frictional force between the drive gear and the driven gear.
Preferably, in order to improve the collection volume, be equipped with the compression subassembly in the collecting box, the compression subassembly includes compression board and two at least power pack, the compression board is perpendicular with the transmission shaft, the inner wall that is close to access cover one side of compression board and collecting box supports and leans on, be equipped with the clearance between the inner wall of keeping away from access cover one side of compression board and collecting box, power pack sets up the one side of keeping away from the access cover at the compression board, power pack and intake pipe one-to-one, power pack drive compression board is along the axial displacement of transmission shaft.
Preferably, in order to achieve the buffering and vibration damping effect, a rubber block is arranged on one side of the compression plate close to the access cover, and the rubber block is laid on the compression plate.
Preferably, in order to drive the compression plate to move, the power unit comprises a power rod, a fixed block, an electromagnet, a spring and a through hole, the through hole is formed in one side, far away from the access cover, of the collection box, the power rod is parallel to the transmission shaft, the power rod penetrates through the through hole, the power rod is connected with the through hole in a sliding and sealing mode, one end of the power rod is fixed on the compression plate, the fixed block is fixed at the other end of the power rod, the spring is located between the collection box and the fixed block, the fixed block is connected with the collection box through the spring, the electromagnet is arranged on one side, far away from the collection box, of the fixed block, the electromagnet is opposite to the fixed block, the electromagnet is fixed on the inner wall of the main body, a gap is formed between the electromagnet and the fixed block, and the gap is larger than the distance between the compression plate and the inner wall, far away from the access cover, of the collection box, the fixed block is made of iron.
Preferably, in order to improve the sealing performance between the power rod and the through hole, the inner wall of the through hole is coated with sealing grease.
Preferably, the drive motor is a servo motor in order to increase the drive force of the drive motor.
Preferably, the body is provided with anti-slip threads to avoid slipping.
Preferably, in order to prolong the service life of the transmission shaft, the transmission shaft is provided with an anti-corrosion zinc coating.
The handheld electric teaching tool with the good wiping effect has the advantages that the function of driving the first rotary brush and the second rotary brush to rotate reversely is achieved through the driving mechanism, the wiping effect is improved, compared with the existing driving mechanism, the driving mechanism is ingenious in structure and high in practicability, the function of collecting chalk dust generated in the wiping process is achieved through the dust collecting mechanism, dust damage is avoided, compared with the existing dust collecting mechanism, the dust collecting mechanism can also improve the heat dissipation effect of the driving motor, and the practicability is high.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a hand-held power teaching aid of the present invention with good wiping effect;
FIG. 2 is a cross-sectional view of the hand held power teaching aid of the present invention with good wiping action;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
in the figure: 1. the automatic cleaning machine comprises a main body, 2, an access cover, 3, a first rotary brush, 4, a driving motor, 5, a transmission shaft, 6, a collecting box, 7, an air exhaust pipe, 8, an air exhaust pump, 9, a filter screen, 10, an air inlet pipe, 11, a one-way valve, 12, a driving gear, 13, a driven gear, 14, a rotating shaft, 15, a bearing, 16, a second rotary brush, 17, a compression plate, 18, a rubber block, 19, a power rod, 20, a fixing block, 21, an electromagnet and 22, and a spring.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1, a hand-held electric teaching aid with good wiping effect comprises a main body 1, an access cover 2 and a first rotary brush 3, wherein the main body 1 is cuboid, one side of the main body 1 is provided with an access opening, the access cover 2 is matched with the access opening, the access cover 2 is arranged in the access opening, the first rotary brush 3 is arranged on one side of the main body 1 far away from the access cover 2, and a driving mechanism and a dust collecting mechanism are arranged in the main body 1;
the user holds the main body 1, and moves the first rotary brush 3 on the blackboard to realize the function of wiping chalk characters on the blackboard, wherein, the driving mechanism is arranged to drive the first rotary brush 3 to rotate so as to improve the wiping effect, and the dust collecting mechanism is arranged to realize the function of collecting chalk dust.
As shown in fig. 2, the driving mechanism includes a driving motor 4, a transmission shaft 5 and a connection hole, the connection hole is disposed on one side of the main body 1 far from the access opening, an axis of the connection hole is perpendicular to a plane of the main body 1 where the connection hole is disposed, an aperture of the connection hole is equal to a diameter of the transmission shaft 5, the transmission shaft 5 passes through the connection hole, the transmission shaft 5 is slidably and hermetically connected with the connection hole, the first rotating brush 3 is mounted at one end of the transmission shaft 5, the driving motor 4 is in transmission connection with the other end of the transmission shaft 5, the driving motor 4 is fixed on an inner wall of the main body 1, and a gap is disposed between the driving motor 4 and the access cover 2;
the driving motor 4 operates to drive the transmission shaft 5 to drive the first rotary brush 3 to rotate, so that the first rotary brush 3 can rotate and move on the blackboard at the same time, the wiping mode is increased, and the wiping effect is improved.
As shown in fig. 3, the dust collecting mechanism includes a collecting box 6, an air exhaust pipe 7, an air exhaust pump 8, a filter screen 9 and at least two air inlet components, the collecting box 6 is cuboid, the collecting box 6 is located between the driving motor 4 and the access cover 2, the collecting box 6 is fixed on the access cover 2, the air exhaust pipe 7 is arranged on one side of the collecting box 6, the air exhaust pipe 7 is communicated with the collecting box 6, the air exhaust pump is arranged on the air exhaust pipe 7, the filter screen 9 is mounted on the air exhaust pipe 7, the main body 1 is provided with an air outlet, the air outlet is located on one side of the main body 1 far away from the air exhaust pipe 7, the driving motor 4 is located between the air exhaust pipe 7 and the air outlet, and the air inlet components are circumferentially and uniformly distributed on one side of the collecting box 6 near the driving motor 4 by taking the axis of the transmission shaft 5 as the center;
the air inlet assembly comprises an air inlet pipe 10, a one-way valve 11, a through hole and a pilot hole, the pilot hole is arranged on one side, away from the access cover 2, of the main body 1, the through hole is arranged on one side, close to the driving motor 4, of the collecting box 6, the axis of the through hole is parallel to the axis of the transmission shaft 5, the pilot hole is coaxially arranged with the through hole, the aperture of the through hole is equal to that of the pilot hole, the air inlet pipe 10 is coaxially arranged with the through hole, the outer diameter of the air inlet pipe 10 is equal to that of the through hole, the air inlet pipe 10 penetrates through the through hole, the air inlet pipe 10 is connected with the through hole in a sliding and sealing mode, one end, away from the access cover 2, of the air inlet pipe 10 is arranged in the pilot hole, the air inlet pipe.
In the cleaning process, the air pumping pump operates to enable the air pumping pipe 7 to pump the air in the collecting box 6 to be conveyed into the main body 1, so that the air pressure in the collecting box 6 is reduced, the air pumping pipe 10 is used for conveying the air into the collecting box 6 under the action of the air pressure, the chalk dust can be conveyed into the collecting box 6 through the air pumping pipe 10 through the flowing of the air, the function of collecting the chalk dust is achieved, here, the chalk dust in the collecting box 6 can be prevented from flowing back from the air pumping pipe 10 through the one-way characteristic of the one-way valve 11, the effect that the chalk dust in the collecting box 6 is prevented from being discharged from the air pumping pipe 7 through the function of the filter screen 9 is achieved, meanwhile, the air pumped out from the air pumping pipe 7 is discharged from the air outlet, and the heat dissipation effect of the driving motor 4 can.
Preferably, in order to improve the wiping effect, an auxiliary assembly is arranged in the main body 1, the auxiliary assembly comprises a driving gear 12 and at least two auxiliary units, the driving gear 12 is mounted on the transmission shaft 5, the auxiliary units correspond to the air inlet pipes 10 one by one, the auxiliary units are located between the driving gear 12 and the air inlet pipes 10, the auxiliary units comprise driven gears 13, rotating shafts 14, bearings 15, second rotating brushes 16 and mounting holes, the mounting holes are arranged on one side of the main body 1 far away from the access cover 2, the rotating shafts 14 are parallel to the transmission shaft 5, the bearings 15 are located in the mounting holes, the rotating shafts 14 penetrate through the mounting holes, inner rings of the bearings 15 are mounted on the rotating shafts 14, outer rings of the bearings 15 are sealed and fixedly connected with inner walls of the mounting holes, the driven gears 13 are mounted at one ends of the rotating shafts 14 close to the access cover 2, the second rotary brush 16 is mounted on the other end of the rotary shaft 14, and the driving gear 12 is engaged with the driven gear 13.
The rotation of transmission shaft 5 drives drive gear 12 to rotate, the rotation of drive gear 12 makes rotation axis 14 drive second rotatory brush 16 to rotate under the supporting action of bearing 15 through driven gear 13, and the first rotatory brush 3 is opposite with the rotation direction of second rotatory brush 16, can further promote the wiping effect.
Preferably, the drive gear 12 is coated with a lubricating oil in order to reduce the frictional force between the drive gear 12 and the driven gear 13.
The lubricating oil has the function of reducing the friction force between the driving gear 12 and the driven gear 13 and improving the smoothness of the rotation of the driven gear 13 driven by the driving gear 12.
Preferably, in order to improve the collection amount, a compression assembly is arranged in the collection box 6 and comprises a compression plate 17 and at least two power units, the compression plate 17 is perpendicular to the transmission shaft 5, the compression plate 17 abuts against the inner wall, close to the side of the access cover 2, of the collection box 6, a gap is formed between the compression plate 17 and the inner wall, far away from the side of the access cover 2, of the collection box 6, the power units are arranged on the compression plate 17, far away from the side of the access cover 2, the power units are in one-to-one correspondence with the air inlet pipes 10, and the power units drive the compression plate 17 to move along the axial direction of the transmission shaft 5.
Make compression plate 17 remove towards keeping away from access cover 2 direction through power unit to make compression plate 17 can compress the chalk dust in the collecting box 6, thereby reduced the volume of the chalk dust in the collecting box 6, promoted the collection capacity, and, can make compression plate 17 reset through power unit.
Preferably, in order to achieve the buffering and vibration-damping effect, the compression plate 17 is provided with a rubber block 18 on the side close to the access cover 2, and the rubber block 18 is laid on the compression plate 17.
The rubber texture is comparatively soft, can reduce the impact force that produces when compression plate 17 supports with collecting box 6 and leans on, has played the effect of buffering and damping.
As shown in fig. 4, the power unit includes a power rod 19, a fixed block 20, an electromagnet 21, a spring 22 and a through hole, the through hole is disposed on one side of the collecting box 6 far from the access cover 2, the power rod 19 is parallel to the transmission shaft 5, the power rod 19 passes through the through hole, the power rod 19 is connected with the through hole in a sliding and sealing manner, one end of the power rod 19 is fixed on the compression plate 17, the fixed block 20 is fixed on the other end of the power rod 19, the spring 22 is located between the collecting box 6 and the fixed block 20, the fixed block 20 is connected with the collecting box 6 through the spring 22, the electromagnet 21 is disposed on one side of the fixed block 20 far from the collecting box 6, the electromagnet 21 is disposed opposite to the fixed block 20, the electromagnet 21 is fixed on the inner wall of the main body 1, a gap is disposed between the electromagnet 21 and the fixed block 20, and the gap is greater than the distance between the, the fixed block 20 is made of iron.
When the electromagnet 21 is powered on, an attractive acting force is generated between the electromagnet 21 and the iron fixed block 20, so that the fixed block 20 drives the compression plate 17 to move towards the direction away from the access cover 2 through the power rod 19, the spring 22 is stretched, and when the electromagnet 21 is powered off, the power rod 19 drives the compression plate 17 to reset under the elastic action of the spring 22, so that the function of driving the compression plate 17 to move is realized.
Preferably, in order to improve the sealing between the power rod 19 and the through-hole, the inner wall of the through-hole is coated with a sealing grease.
The sealing grease has the function of reducing the clearance between the power rod 19 and the inner wall of the through hole, and the sealing performance is improved.
Preferably, the driving motor 4 is a servo motor in order to increase the driving force of the driving motor 4.
The servo motor has a characteristic of strong overload capability, so that the driving force of the driving motor 4 can be improved.
Preferably, the body 1 is provided with anti-slip threads to avoid slipping.
The anti-slip lines are used for improving the friction force between the hands of the user and the main body 1 and avoiding slipping.
Preferably, in order to prolong the service life of the transmission shaft 5, the transmission shaft 5 is provided with an anti-corrosion zinc coating.
The function of anticorrosive zinc coating is to promote the rust-resistant ability of transmission shaft 5, prolongs the life of transmission shaft 5.
This apparatus uses the method to be for holding main part 1, make first rotatory brush 3 and the rotatory brush 16 of second remove on the blackboard can, during, realize the antiport through first rotatory brush 3 and the rotatory brush 16 of second on the blackboard, can promote the effect of wiping of first rotatory brush 3 and the rotatory brush 16 of second, moreover, will wipe the chalk dust that the in-process produced and concentrate to collection case 6 through the air current, can avoid the dust harm.
Compared with the prior art, this clean effectual hand-held type electronic teaching aid has realized driving first rotatory brush 3 and the 16 antiport function of second rotatory brush through actuating mechanism, the effect of cleaning has been promoted, compare with current actuating mechanism, this actuating mechanism structure is ingenious, the practicality is stronger, moreover, still realize collecting the function of cleaning the chalk dust that the in-process produced through collection dirt mechanism, avoid dust harm, compare with current collection dirt mechanism, this collection dirt mechanism can also promote driving motor 4's radiating effect, the practicality is stronger.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A hand-held electric teaching tool with a good wiping effect comprises a main body (1), an access cover (2) and a first rotary brush (3), wherein the main body (1) is cuboid in shape, an access hole is formed in one side of the main body (1), the access cover (2) is matched with the access hole, the access cover (2) is arranged in the access hole, and the first rotary brush (3) is arranged on one side, far away from the access cover (2), of the main body (1), and is characterized in that a driving mechanism and a dust collecting mechanism are arranged in the main body (1);
the driving mechanism comprises a driving motor (4), a transmission shaft (5) and a connecting hole, the connecting hole is formed in one side, far away from the access hole, of the main body (1), the axis of the connecting hole is perpendicular to the plane of the side, provided with the connecting hole, of the main body (1), the aperture of the connecting hole is equal to the diameter of the transmission shaft (5), the transmission shaft (5) penetrates through the connecting hole, the transmission shaft (5) is connected with the connecting hole in a sliding and sealing mode, the first rotating brush (3) is installed at one end of the transmission shaft (5), the driving motor (4) is connected with the other end of the transmission shaft (5) in a transmission mode, the driving motor (4) is fixed on the inner wall of the main body (1), and a gap is formed between the driving motor (4) and the access cover (2);
the dust collecting mechanism comprises a collecting box (6), an air exhaust pipe (7), an air exhaust pump (8), a filter screen (9) and at least two air inlet components, the collecting box (6) is cuboid, the collecting box (6) is positioned between the driving motor (4) and the access cover (2), the collecting box (6) is fixed on the access cover (2), the exhaust pipe (7) is arranged on one side of the collecting box (6), the air exhaust pipe (7) is communicated with the collecting box (6), the air exhaust pump is arranged on the air exhaust pipe (7), the filter screen (9) is arranged on the exhaust pipe (7), the main body (1) is provided with an air outlet, the air outlet is positioned on one side of the main body (1) far away from the air exhaust pipe (7), the driving motor (4) is positioned between the air exhaust pipe (7) and the air outlet, and the air inlet components are circumferentially and uniformly distributed on one side, close to the driving motor (4), of the collection box (6) by taking the axis of the transmission shaft (5) as a center;
the air inlet component comprises an air inlet pipe (10), a one-way valve (11), a through hole and an assembling hole, the assembly hole is arranged on one side of the main body (1) far away from the access cover (2), the through hole is arranged on one side of the collection box (6) close to the driving motor (4), the axis of the through hole is parallel to the axis of the transmission shaft (5), the assembly hole and the through hole are coaxially arranged, the aperture of the through hole is equal to that of the assembling hole, the air inlet pipe (10) is coaxially arranged with the through hole, the outer diameter of the air inlet pipe (10) is equal to the aperture of the through hole, the air inlet pipe (10) penetrates through the through hole, the air inlet pipe (10) is connected with the through hole in a sliding and sealing way, one end of the air inlet pipe (10) far away from the access cover (2) is arranged in the assembling hole, the air inlet pipe (10) is hermetically and fixedly connected with the inner wall of the assembly hole, and the air inlet pipe (10) is communicated with the collection box (6);
the utility model discloses a pneumatic storage box, including collecting box (6), be equipped with compression assembly in the collecting box (6), compression assembly includes compression board (17) and two at least power pack, compression board (17) are perpendicular with transmission shaft (5), inner wall that is close to access cover (2) one side of compression board (17) and collecting box (6) supports and leans on, be equipped with the clearance between the inner wall of keeping away from access cover (2) one side of compression board (17) and collecting box (6), power pack sets up the one side of keeping away from access cover (2) in compression board (17), power pack and intake pipe (10) one-to-one, power pack drive compression board (17) is along the axial displacement of transmission shaft (5).
2. The hand-held electric teaching tool with good wiping effect as claimed in claim 1, wherein an auxiliary assembly is arranged in the main body (1), the auxiliary assembly comprises a driving gear (12) and at least two auxiliary units, the driving gear (12) is mounted on the transmission shaft (5), the auxiliary units correspond to the air inlet pipes (10) one by one, the auxiliary units are located between the driving gear (12) and the air inlet pipes (10), the auxiliary units comprise a driven gear (13), a rotating shaft (14), a bearing (15), a second rotating brush (16) and a mounting hole, the mounting hole is arranged on one side of the main body (1) far away from the access cover (2), the rotating shaft (14) is parallel to the transmission shaft (5), the bearing (15) is located in the mounting hole, the rotating shaft (14) passes through the mounting hole, and the inner ring of the bearing (15) is mounted on the rotating shaft (14), the outer lane of bearing (15) and the inner wall of mounting hole are sealed and fixed connection, driven gear (13) are installed in the one end that is close to access cover (2) of axis of rotation (14), the other end at axis of rotation (14) is installed in second rotatory brush (16), drive gear (12) and driven gear (13) meshing.
3. Hand-held power teaching aid with good wiping effect according to claim 2, wherein the driving gear (12) is coated with lubricating oil.
4. Hand-held electric teaching aid with good wiping effect according to claim 1, characterized in that the compression plate (17) is provided with a rubber block (18) on the side close to the access cover (2), and the rubber block (18) is laid on the compression plate (17).
5. The hand-held electric teaching tool with good wiping effect as claimed in claim 1, wherein the power unit comprises a power rod (19), a fixed block (20), an electromagnet (21), a spring (22) and a through hole, the through hole is arranged on one side of the collection box (6) far away from the access cover (2), the power rod (19) is parallel to the transmission shaft (5), the power rod (19) passes through the through hole, the power rod (19) is connected with the through hole in a sliding and sealing manner, one end of the power rod (19) is fixed on the compression plate (17), the fixed block (20) is fixed on the other end of the power rod (19), the spring (22) is arranged between the collection box (6) and the fixed block (20), the fixed block (20) is connected with the collection box (6) through the spring (22), the electromagnet (21) is arranged on one side of the fixed block (20) far away from the collection box (6), the electric magnet (21) and the fixing block (20) are arranged just opposite to each other, the electric magnet (21) is fixed on the inner wall of the main body (1), a gap is formed between the electric magnet (21) and the fixing block (20), the gap is larger than the distance between the compression plate (17) and the inner wall of the collecting box (6) on one side far away from the access cover (2), and the fixing block (20) is made of iron.
6. The handheld electric teaching tool with good wiping effect of claim 5 wherein the inner wall of the through hole is coated with a sealing grease.
7. Hand-held power-driven teaching tool with good wiping effect according to claim 1, characterised in that the drive motor (4) is a servo motor.
8. Hand-held electric teaching tool with good wiping effect according to claim 1, characterized in that the body (1) is provided with anti-slip threads.
9. The hand-held electric teaching tool with good wiping effect as claimed in claim 1, wherein the transmission shaft (5) is provided with an anti-corrosion zinc coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675323.3A CN110422000B (en) | 2019-07-25 | 2019-07-25 | Clean effectual electronic teaching aid of hand-held type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675323.3A CN110422000B (en) | 2019-07-25 | 2019-07-25 | Clean effectual electronic teaching aid of hand-held type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110422000A CN110422000A (en) | 2019-11-08 |
| CN110422000B true CN110422000B (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910675323.3A Expired - Fee Related CN110422000B (en) | 2019-07-25 | 2019-07-25 | Clean effectual electronic teaching aid of hand-held type |
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| CN (1) | CN110422000B (en) |
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| CN104015530A (en) * | 2014-06-18 | 2014-09-03 | 华南农业大学 | Motor-driven dust-free chalk eraser |
| CN206201782U (en) * | 2016-08-06 | 2017-05-31 | 惠安县长智电子科技有限公司 | A kind of bidirectional rotary type electric blackboard eraser |
| CN107348897A (en) * | 2017-07-29 | 2017-11-17 | 扬州市大悦信息科技有限公司 | A kind of wood chip collection device |
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| CN108103899A (en) * | 2017-12-27 | 2018-06-01 | 袁阔 | Build compaction apparatus in a kind of the cycling dust-protection type road surface of Electromagnetic Control |
| CN109795706A (en) * | 2019-01-15 | 2019-05-24 | 广州市欧伊若科技有限公司 | A kind of flight instruments for photography of taking photo by plane with dust reduction capability |
| CN208973656U (en) * | 2018-04-21 | 2019-06-14 | 深圳市横河新高机电有限公司 | A kind of novel portable dust catcher |
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2019
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| CN202288122U (en) * | 2011-09-13 | 2012-07-04 | 刘方旭 | Solar handheld miniature electric sweeping dust collector |
| CN104015530A (en) * | 2014-06-18 | 2014-09-03 | 华南农业大学 | Motor-driven dust-free chalk eraser |
| CN206201782U (en) * | 2016-08-06 | 2017-05-31 | 惠安县长智电子科技有限公司 | A kind of bidirectional rotary type electric blackboard eraser |
| CN107415544A (en) * | 2017-05-23 | 2017-12-01 | 昌邑市创通电子科技有限公司 | One kind teaching special-purpose multifunctional blackboard eraser |
| CN207107538U (en) * | 2017-07-11 | 2018-03-16 | 李张翼 | A kind of dustbin with compression function |
| CN107348897A (en) * | 2017-07-29 | 2017-11-17 | 扬州市大悦信息科技有限公司 | A kind of wood chip collection device |
| CN108103899A (en) * | 2017-12-27 | 2018-06-01 | 袁阔 | Build compaction apparatus in a kind of the cycling dust-protection type road surface of Electromagnetic Control |
| CN208973656U (en) * | 2018-04-21 | 2019-06-14 | 深圳市横河新高机电有限公司 | A kind of novel portable dust catcher |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110422000A (en) | 2019-11-08 |
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