CN102774180A

CN102774180A - Dustproof blackboard capable of automatically erasing blackboard writings

Info

Publication number: CN102774180A
Application number: CN2012101555978A
Authority: CN
Inventors: 梁正
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-04
Filing date: 2012-05-18
Publication date: 2012-11-14

Abstract

The invention discloses a blackboard capable of automatically erasing blackboard writings and removing dust. Erasing strips are arranged on the back of the blackboard, and the blackboard writings can be erased by utilizing force through pushing and pushing the blackboard up and down. In addition, the special combination of chains and gears is used for driving the blackboard to move up and down, and the blackboard can be displaced forwards and backwards in a rolling way, so that the blackboard writings can be erased more conveniently. Nowadays, the educational business rises, and the health of teachers and students are greatly influenced by the dust. According to the technology, when the blackboard is automatically erased, a moving cavity on the back of the blackboard is used for collecting the dust produced in the blackboard erasing process to protect the health of the teachers and the students. In addition, the blackboards can also be in the same plane in a vertical direction, so that large-area continuous blackboard writings can be possible under a special teaching condition.

Description

Automatically the wiping board book is prevented the floating dust blackboard

Technical field

This design field is the design and the innovation of blackboard writing on the blackboard erasing system and blackboard suspension.

Background technology

Along with developing rapidly of national economy, more be to have put on agenda to science and technology with the attention of educating, classroom instruction then is the most general approach of knowledge dissemination; Giving lessons of system adopted the form of blackboard writing on the blackboard mostly; The blackboard that uses at present with us is example, adopts manpower to wipe basically when removing writing, when particularly the classroom knowledge capacity is big; Wipe and wait for that dust falls and go on the dais again; Have to take the extra time of significant proportion, simultaneously the replacing frequency of blackboard eraser is also along with increase, thereby causes human and material resources and temporal waste.

The present invention uses the active force that spurs two blackboards up and down back and forth; Drive the special wiping bar that is provided with; To play the function of wiping the blackboard writing automatically; Should technology use the technology at sealing blackboard back simultaneously, most dust is drawn in the blister cavities of blackboard back, and make it play the effect of environment-friendly dustless.Moreover; But this technology has enlarged the usable floor area of blackboard, for teacher's writing on the blackboard of giving a lesson provides bigger space, has reduced teacher erase the board on class spent manpower and material resources greatly; The dust that produces when reducing the wiping board book floats, and has saved precious resources such as human, financial, and material resources.Flourish along with present educational undertaking, majority is engaged in teaching profession person and is all suffered from tuberculosis because of dust problem, and dust has also threatened the healthy of students simultaneously.This technology is the healthy safety guarantee that provides of Faculty and Students when the minimizing dust floats.Compare the patent that other automatic writing on the blackboard is wiped, present technique has the outstanding advantage of environmental protection, energy-conservation, protection aspects such as teachers and students are healthy, both be that low-carbon (LC) society protects and navigates, and contributes for the educational undertaking of motherland again.

Summary of the invention

The present invention compares traditional blackboard; Two blackboards hang the method for connection mutually before having abandoned; And use the method that gear combines with chain instead, such transformation makes that blackboard perpendicular walls direction easy on and off moves, barrel shift becomes possibility, has increased the long bar (11) of wiping of suppressible similar blackboard eraser simultaneously at the back of blackboard; Increased the handle and the long U type switch (14) of wiping bar (11) of control of control blackboard position at downside, made the use of blackboard more quick and easy.

Description of drawings

Fig. 1 is that the side view with single blackboard is partly cutd open in the front of single blackboard;

Fig. 2 is the back view of single blackboard;

Fig. 3 is the linkage figure that control long wiping bar (11) is hidden and stretched out;

Fig. 4 is the chain transmission diagram between two blackboards;

Fig. 5 is a packing cloth mobile device (16) and following blackboard blackboard track (4) graph of a relation of going up the blackboard back;

Fig. 6 is the track (1) and wall track (2) pattern diagram of blackboard both sides outline.

But the important part of the present invention is this technology of automatic blackboard cleaning (Fig. 2 and Fig. 3); At the back of two blackboards, it all is designed with two suppressible long bars (11) of wiping in the position up and down, and its length and blackboard surface width are slightly long; Then can wipe writing on the blackboard fully; The long bars of wiping of two control are hidden and are linked to each other by a Metallic rod (13) with the device that stretches out (12) up and down, Metallic rod (13) at the middle part from the blackboard upper end to the blackboard lower end, then it stretches out with hiding U type switch (14) and is communicated with a control in the lower end; This switch is the elastic force switch, and the material that should wipe bar is for vertically to blackboard surface.When U type switch (14) when switch is in closed condition; To the unable effect of Metallic rod (13); The device (12) that then control length wiping bar is hidden and stretched out will be grown wiping bar (11) and hide; In the process of push-and-pull blackboard, there be not any contact, moving up and down in the time of normally to impart knowledge to students with following blackboard surface; But when opening switch; And when the bend procedure of switch was different, it was different with the contact force of following blackboard surface then should longly to wipe bar (11), promptly worked as the crooked of switch or open program big more; Then control is long wipes device (12) that bar hides and stretch out to stretch out degree big more; Long wiping bar (11) is big more with the contact force of following blackboard surface, and it is bigger then can to get frictional force by physical principle, can be better so wipe the effect of writing on the blackboard.This elastic force switch is set to bending, and under the switch closed condition, it is the hereinafter of inverted U at the blackboard back side; One of U type switch (14) is connected with the back side of blackboard, and the other end of U type switch (14) then is the handle of this switch, its handle of leaving behind; Then this switch is that pivot rotates around the point that is connected with blackboard, to U type switch (14) the most at last handle be presented at the front of blackboard, and handle is upwards U type direction; And card has blackboard in the U type mouth; Then at this moment this switch is the maximum, force place, promptly at utmost locates, and this borough chief wipes bar (11) and the positive contact force of following blackboard is maximum.With U type switch (14) one arms that the contact that links to each other links to each other on; Outstanding one; Constitute tee T jointly in this point and this arm, then one of this point goes up and is connected with a guide line, and guide line controls that length wiping bar is hiding to link to each other with the Metallic rod (13) of the device that stretches out (12) with being connected.The blackboard back side that coexists, then when this switch was left behind, then spring can provide the power of a form of answer own for this switch; When switch was in maximum program, spring can make switch fix current form to the pulling force of switch, made to use switch more convenient; On this U type switch (14) top; The trend of fixing this guide line of fixed pulley guiding, make its to the power of Metallic rod (13) forever to a direction, make device more stable.When opening switch; Then can be to controlling long spring compression of wiping device (12) lining that bar hides and stretch out; The long bar (11) of wiping stretches out and positive vertical friction of following blackboard, then at this moment only needs pulling blackboard or back blackboard surface, then can accomplish the function of automatic blackboard cleaning.When having wiped blackboard; Only need to opposite spin U type switch (14); Then under the elastic force of the long spring of wiping device (12) lining that bar hides and stretch out of control; U type switch (14) can set back and make the long bar (11) of wiping to hide, and then at this moment can accomplish the blackboard of push-and-pull up and down in the normal teaching.

But the blackboard surface (Fig. 4) that is designed to the displacement of perpendicular walls direction that the present invention its another is outstanding; Traditional blackboard all be go up blackboard in the above forever; Following blackboard but in order to adapt to the needs of two blackboards of automatic wiping, then need carry out the parallel rotation of perpendicular walls direction with two blackboard surfaces up and down forever below; Promptly two blackboard surface structures are identical up and down, and do not go up the branch of blackboard and following blackboard.In the both sides of blackboard, each settles a chain (5), and the bearing pin of this chain part is all to the inboard both sides of extending and being fixed on blackboard of blackboard.Central both sides at blackboard surface; And the central authorities at last blackboard and following blackboard establish a gear (6) that diameter is moderate respectively; And its center of circle is fixed on this; The effect of this gear (6) then is to make to keep dynamic equilibrium relation between two blackboards, promotes to go up blackboard if make progress, and blackboard surface moved downward under then gear (6) can drive.When two blackboards will change front-back direction and concern; As long as with its when the both sides up and down along the push-and-pull of perpendicular walls direction; Then gear (6) can be walked around the top of chain (5); One side by chain (5) is gone to another side, and at this moment the place-exchange of perpendicular walls direction has then then taken place between the blackboard surface.For the vertical state of fixed blackboard, and make the displacement between two blackboards more stable, in the both sides of blackboard outline; Respectively establish a track (1), the shape of this track (1) is similar to long 8 fonts, outside the top bearing pin of blackboard chain (5), connects a Metallic rod; Make the length of this bar just embed track (1), through this two bar, at this moment moving then of blackboard surface slided along track; Its all paths of moving are all fixed, thus according to the path design respective track shape of its Metallic rod, then can prevent blackboard with respect to the wall vertical direction sink and outstanding; And can make it keep vertical state, for teaching provides more convenience.

It is exactly that two blackboard surfaces can be in the centre position perpendicular to wall simultaneously that this blackboard also has a spotlight, at this moment then has been communicated with two blackboard surfaces up and down.The control handle of all switches of blackboard is all designed the downside at blackboard; Then be in order to remove blackboard armrest portion up and down; For blackboard surface provides more written portion, also make things convenient for the teacher scheming drafting greatly simultaneously, remove the anxiety of traditional blackboard from and write scope.It is with the pilot process of two blackboard surfaces when adjusting with respect to the upper-lower position of wall that two blackboard surfaces are placed to central authorities, in this course, when two blackboard surfaces are wanted to adjust with respect to the upper-lower position of wall, needs through the centre position.Needs for field research; Under few cases, can need the writing on the blackboard of the big figure monoblock of picture, two blackboard surfaces are linked up, when two blackboard surfaces are in same plane, lock its two blackboard; Then this need establish a switch in addition and lock its middle position; Then open a switch handle in addition at the blackboard downside, the inside upper and lower of their locking key chain in the both sides of blackboard is provided with hole slot at the peripheral above and below opposite position of blackboard simultaneously and cooperates this locking key.Device as door lock is at above-below direction, but is different from door lock assembly, and this device is for when switch cuts out; Locking key is inner at blackboard, in the time need two blackboard surfaces being carried out the adjustment perpendicular to the wall upper-lower position, then moves this switch handle; Locking key is ejected, then blackboard is executed a power pulling blackboard that perpendicular walls is outside or inside, in this process; This switch handle still is in open mode; In the time of pulling, the side up and down of the locking key of ejection and two blackboards is relative with the keyhole of blackboard outline, blackboard surface before and after then at this moment promptly having fixed.When needs continue adjustment, then close this switch, continue blackboard surface is imposed the power of direction just now, then blackboard can be realized the transposing of the upper-lower position of perpendicular walls.The structure of this switch back is that a lever adds spring structure, and when switch cut out, locking key was hidden in blackboard inside; When switch opens, locking key is stretched out, then can the fixed blackboard track; Certainly; Less relatively when needing two blackboard surfaces to link up, so in daily normal teaching, switch can be in closed condition and can directly not stop in centre when then blackboard upper and lower surface equality is rotated always; Faster when then erasing the board, the so then laborsaving evolution of blackboard surface up and down of having controlled easily.

In environmental protection and healthy more and more important today, people are attempting dropping to minimum to all injuries.This technology impacts the healthy of Faculty and Students for the dust that erases the board is not waved everywhere, has designed the device that leaves standstill and collect dust specially.This device is distributed as corresponding packing cloth (9) around the back of blackboard, the bottom of sealing cloth (9) all is stitched with and blackboard eraser is wiped the similar material of bar, wherein and cross-under the material that makes its shape keep strip.During normal condition; Sealing cloth (9) is collected in the back of blackboard; When automatic blackboard cleaning, the packing cloth mobile device (16) that the blackboard back is four jiaos struts it, on wall, is provided with the wall track (2) of guiding packing cloth mobile device (16); Part also is provided with the blackboard track (4) of guiding packing cloth mobile device (16) respectively in the both sides of the edge of blackboard; The top and the bottom of this structure all have and the similar material of blackboard eraser, when better sealing dust, and have further cleaned on the blackboard because the chalk dust that static does not fall.This device still by the long switch control of wiping the device (12) that bar hides and stretch out of control, plays the better fit effect.When normal condition (being the switch closed condition), packing cloth (9) blackboard surface that is in normal condition when packing cloth mobile device (16) up and down has certain distance, the distance that can not impact the writing on the blackboard on the blackboard.Sealing cloth mobile device (16) lower end is a rotatable little cylinder, and middle links to each other with the retractor device at blackboard back, and is connecting the vertically packing cloth (9) of both direction.When switch opens; With the long similar device of extending apparatus of wiping bar (11) use packing cloth (9) is stretched out; Then the spring of packing cloth mobile device (16) lining is in Telescoping here, can with fit above the blackboard, can move on the wall again; Then such moving can guarantee that the packing cloth at the blackboard back side is in sealing state when automatic blackboard cleaning, can carry out quiet to handling to its dust.A guiding packing cloth mobile device (16) device of blackboard track (3,8) up and down can be adorned in the upside of blackboard and the both sides of downside; When the two seriticker generation relative displacements of front and back; The little cylinder that this device can easily will roll under the effect of thrust causes the track on the wall; Or it is caused blackboard track (4) from wall track (2); And all be provided with the slope in the both sides of the upside of blackboard and downside and go to make packing cloth mobile device (16) to come and go freely, so just can guarantee the mobile problem of sealing dust in the process that blackboard moves up and down.When transferring to blackboard track (4) by wall track (2), packing cloth mobile device (16) then is the wall centre track at half blackboard height, downward half blackboard height place upwards through the position; Be unoccupied orbital then at this regional interior walls track (2); The ramp of the both sides of blackboard upside and downside; All have corresponding grooves can two slopes just be interted together on its next door, the rotation that so then can not influence two blackboard surfaces is with coherent.

All there are two layer defence lines in each road of sealing device.The material that the material of internal layer (10) and blackboard eraser are wiped bar is the same, its with the long bar of wiping on one side, but certain distance is arranged with the long bar of wiping; And it is thinner; Same controlled long device (12) control that bar is hidden and stretched out of wiping act as and removes the chalk dust that also is adsorbed on the blackboard, the situation that it can not flown out from the brush rear side in the inswept back of brush; Make cleaning more thorough, also play the effect of collecting dust simultaneously.The second layer is outside defence line; It is packing cloth (9) part; This defence line links to each other with packing cloth mobile device (16); The dust that also remains in outside the first line of defence is housed in the sealing device, and the problem that dust possibly leak outside when this erased the board with regard to having solved has simultaneously given the dust more time simultaneously and has gone to make a decision.Should establish a dedust groove in the bottom of blackboard outline, be used for removing the chalk dust that the dirt of sealing device falls, establish the slide plate that can promote in this ash-pit; The external dimensions of this slide plate is identical with the inside dimension of this ash-pit, accomplishes certain compactness, at this moment at moving this slide plate of a thruster of blackboard extremely; Then can the chalk dust in the ash-pit be flocked together; But all establish the outlet of powder delivery ash then in both sides, then open the ash mouth when ash discharge, shift slide plate onto the end and get final product.

Claims

1. but chain-type push-and-pull and scroll forward and backward displacement blackboard about in the of a kind comprises the outside track (1) of both sides blackboard, it is characterized in that the gear (6) and the chain (5) of blackboard both sides.

2. but chain-type push-and-pull up and down as claimed in claim 1 and scroll forward and backward displacement blackboard is characterized in that being fixed on the driving chain (5) on the blackboard through bearing pin.

3. but according to claim 1 or claim 2 the push-and-pull of chain-type up and down and scroll forward and backward displacement blackboard is characterized in that and the combined track (1) of bearing pin that the chain two ends are outstanding.

4. automatic blackboard cleaning device comprises the long bar (11) of wiping of the usefulness that erases the board, and its characteristic control is long wipes the device (12) that bar is hidden and stretched out.

5. automatic blackboard cleaning device as claimed in claim 4 is characterized in that the U type switch (14) of following control section.

6. like claim 4 or 5 described automatic blackboard cleaning devices, its domestic animal is to wipe the outside that bar (11) links to each other with length.

7. a blister cavities of collecting the automatic blackboard cleaning dust comprises blackboard track (4) wall track (2), it is characterized in that the packing cloth mobile device (16) (9) four jiaos of packing cloths.

8. the blister cavities of collection automatic blackboard cleaning dust as claimed in claim 7 is characterized in that guiding packing cloth mobile device (16) device of blackboard track (3,8) up and down between blackboard track (4) and the wall track (2).

9. like the blister cavities of claim 7 or 8 described collection automatic blackboard cleaning dust, it is characterized in that all being connected packing cloth (9) with vertical 90 degree of packing cloth mobile device (16).

10. like the blister cavities of claim 7 or 8 or 9 described collection automatic blackboard cleaning dust, its domestic animal is the internal layer (10) on long wiping bar top.