CN107160914A - Word environment friendly blackboard is wiped in automatic rotation - Google Patents

Abstract

Word environment friendly blackboard is wiped in a kind of automatic rotation, belongs to teaching aid field, the lower end of its pillar, which is fixed on heel brace, middle part and upper end, rotation hole；Belt type blackboard is set with the sturdy part of the rotating roller of pillar upper end and the rotating roller at middle part；Belt type blackboard be arranged in classroom in face of student be blackboard it is positive, be close to locular wall while be blackboard the back side；Fixed outer wiping, the inside are installed outside the back side of belt type blackboard the inside to be installed inner press roll is installed, there are central shaft, magnet coil and electromagnet in the inside of inner press roll.The simple for structure of word environment friendly blackboard, manufacture and easy to use are wiped in automatic rotation; integrate the automatic function of wiping with blackboard, do not fly the chalk dust flutterred during automatic blackboard cleaning, protect the environmentally-friendly sanitary in classroom; make the standard anyhow of writing again, improve quality of instruction.

Description

Word environment friendly blackboard is wiped in automatic rotation

Technical field

Word environment friendly blackboard is wiped the present invention relates to the automatic rotation of the one kind in the blackboard field of teaching.

Background technology

At present, teacher says that the blackboard used class hour is erased the board manually using blackboard eraser.When erasing the board manually, chalk dust Dust it is big, healthy to the people erased the board causes harm.Therefore, we pass through years of researches and practice, design Gone out do not fly to flutter when erasing the board chalk dust and can be on auto-erasing blackboard writing rotary assembled blackboard.

The content of the invention

It is an object of the invention to provide it is a kind of it is revolving, the automatic rotation wiped of word on blackboard can be wiped word automatically Environment friendly blackboard and its manufacture method.

To achieve the above object, word environment friendly blackboard is wiped in automatic rotation of the present invention mainly includes belt type blackboard, rotation Roller, inner press roll, fixed outer wiping, pillar, heel brace, central shaft, electromagnetic driver, contact starting switch；

The lower end of pillar is fixed on heel brace, and the horizontal manufacture at the middle part and upper end of pillar has rotation hole, two pillar compositions One secondary support frame；The rotary shaft at one rotating roller two ends is arranged in the rotation hole of the pillar upper end of a secondary support frame, another The rotary shaft at rotating roller two ends is arranged in the rotation hole in the middle part of the pillar of a secondary support frame, the rotating roller in the middle part of pillar Rotating roller composition rotation roller group with installed in pillar upper end, belt is set with the sturdy part of the rotating roller of rotation roller group Blackboard, manufacture has x wire or without manufacture x wire on the outer surface of belt type blackboard, is made on the outer surface of belt type blackboard Vertical line is made or without the flush with outer surface for manufacturing vertical line, x wire and vertical line and belt type blackboard；A rotation below Space segment behind above the sturdy part of transfer roller and the aft section in the upper part close to two pillars are fixed There is inner press roll, the inner chamber of inner press roll is fixed on center shaft by multiple bearings, and the two ends of central shaft are separately fixed at close to two Corresponding in the aft section of the upper part of root pillar, inner press roll two ends hollow parts on the pillar of scope, inner press roll Surface of revolution and belt type blackboard the inside one side contact and the belt type blackboard on one side behind inner press roll backward face pressure and make Belt type blackboard protrudes backward；Driving coil and fixed electricity on center shaft are being fixed with the internal chamber wall of inner press roll one end The position of magnet or permanent magnet is corresponding and constitutes the electromagnetic field of electromagnetic driver generation to drive inner press roll to rotate, and drives The circuit of coil is connected by slip ring with the output circuit of contact starting switch, and the circuit of magnet coil also starts with contact The output circuit connection of switch, the supply line of contact starting switch is connected with power supply, and the supply line of electromagnetic driver consolidates Fixed to pass on center shaft outside inner press roll, contact starting switch is arranged on the position that other parts are fitted without on pillar； Fixed outer wiping is fixed with the outer surface of the lower end of the belt type blackboard in a rotating roller below, the fixed outer two ends wiped are fixed on On the medial surface of two pillars of belt type blackboard lower end；Belt type blackboard is arranged on inner press roll and rotation roller group, outer surface The one side wiped outside fixed is the front of blackboard, and there are the back side that the one side wiped outside fixed is blackboard, back side direction religion in outer surface The locular wall of room is installed, just installed facing to student.

Described inner press roll is manufactured as the pressure roller of hollow pipe-type, and multiple bearing suits are provided with the interior intracavitary of inner press roll Inner press roll is supported on center shaft, the inner press roll is rotated around central shaft.

Described central shaft is manufactured as the axle for being fixed on and inner press roll being supported on pillar, and central shaft passes through the inner chamber of inner press roll Afterwards, two ends are all fixed on pillar.

Described electromagnetic driver is manufactured as dynamic equipment can rotating and reverse, using electrical energy drive；Electromagnetism drives Dynamic device includes magnet coil and electromagnet two parts, or electromagnetic driver includes magnet coil and permanent magnet two parts；It is described Magnet coil and electromagnet be that can produce the coil of electromagnetic field, permanent magnet is that magnetic field will not disappear forever because of power-off The magnetic field body of long property, magnet coil is fixed on the internal chamber wall of inner press roll, and electromagnet and permanent magnet are fixed on center shaft；Institute The magnet coil stated is similar in appearance to the mat coil of motor, the iron core of electromagnet and permanent magnet similar in appearance to motor.

Described contact starting switch be manufactured as rubber spring, contact head, transmission head, conductor wire, rotate forward button, it is anti- Turn button and the several parts of housing；There is via to pass through the upper end diameter of housing, main story button and reversion button at the top of housing Small partially passes through via, and the upper end of transmission head is separately fixed at the lower end of main story button and reversion button；Bottom in housing Portion be provided with below two contact heads, rubber spring be partly enclosed on the internal diameter of contact head it is small above on part, rubber spring Above be partly enclosed on the internal diameter of transmission head it is small below on part；Part and transmission head diameter are big below contact head diameter is big Above part connect conductor wire respectively, the electric current input conductor wire of connection in contact starting switch and the live wire of power supply connect Connect, electric current exports conductor wire and the entrance live wire of electromagnetic driver is connected, the line of power supply to electromagnetic driver, which is used, directly to be connected Connect and without contact starting switch；Stayed with transmitting the lower end of head the upper end of contact head in the endoporus of rubber spring There is gap, when pressing main story button or reversion button, the upper end of the contact head of installation corresponding with main story button or reversion button Can be with transmitting the lower end in contact of head by the supply line of conductor wire connection electromagnetic driver；Electricity when pressing main story button Magnetic driven device is rotated forward, and electromagnetic driver is inverted when pressing reversion button, and electromagnetic driver shuts down during release button；Described Rubber spring is manufactured using rubber, is manufactured as the rubber bodies of tubular type, spring is realized using the deformation return function of rubber Function.

Described pillar, which is manufactured as carrying rotating roller and weight, the upper end of belt type blackboard, to be had and there is rotation hole at middle part Support cylinder；

Described heel brace is manufactured as the horizontal cylinder or disking body of the weight of H load-bearing pillar, rotating roller and belt type blackboard.

Described rotating roller is manufactured as middle cylinder thick, small in ends, and part small in ends is manufactured as smooth Rotary shaft；

Described belt type blackboard uses one or more of material manufactures in plastics, nylon, rubber, is manufactured as flexible volume The plate of belt；The plate of described coil type can also be manufactured as the plate of the smooth coil type in surface；Again by flexible winding The plate of formula surrounds the ring of a long-tube, the end at the two ends of interface is polished into after beveled mouth again fixed with viscose glue afterwards And the blackboard as conveyer belt type；Described belt type blackboard can also add warp and weft in the plate of coil type during fabrication Come the long ability of tension for increasing belt type blackboard；

Wiped outside described fixation and partly manufactured above being contacted with belt type blackboard using soft fiber or sponge, be manufactured as energy Enough wipe the chalk trace eraser on blackboard；The part on pillar is partly fixed on below fixed outer wiping with two ends using hardness Material manufacture；When rotating roller drives belt type blackboard to rotate, it is fixed outer wipe can be on erasing blackboard writing.

Chalk dust is set not fly to flutter everywhere in order to which chalk dust is collected, additionally it is possible to close under fixed outer wiping Disposable box is simultaneously fixed with behind the pillar in face to collect chalk dust；Described disposable box is the rectangular box for having a bottom uncovered Son, the two ends of disposable box are separately fixed on two pillars.

In order that fixed outer wipe is wiped totally when erasing the board, the one side erased the board wiped outside described fixation can also be adopted Blade insert is manufactured as with elastomeric material.In order to make chalk be write on the plate of coil type, described chalk can be Hard chalk, it may also be said to soft chalk；Described hard chalk is traditional common chalk；Described soft chalk is can be in surface light The strong pen of the adhesive force that writes or paint on the plate of sliding coil type, such as marking pen.

Laterally write neat on blackboard for convenience, have x wire on the outer surface of blackboard；Described x wire is Fine line or dotted line or chain-dotted line or the dotted line of ellipsis formula；

The lines of neat or the text alignment with up-downgoing or the picture that aligns longitudinally are write on blackboard for convenience, in blackboard There is vertical line on outer surface；Described vertical line is the dotted line of fine line or dotted line or chain-dotted line or ellipsis formula.

In use, directly write or drawn on blackboard with chalk；The not high people of height is directly in the middle and lower part book of blackboard Write or draw, when writing blackboard bottom, the main story button for pressing contact starting switch connects magnet coil or connects electromagnetic wire The circuit of circle and electromagnet produces electromagnetic field, and the electromagnetic field that magnet coil is produced produces electromagnetic field with electromagnet or permanent magnet is produced Raw magnetic field is mutually exclusive and rotates forward magnet coil, then drives inner press roll to rotate forward；When inner press roll is rotated forward Drive belt type blackboard to be rotated forward in rotating roller, belt type blackboard is moved up after a certain distance, unclamp contact starting switch Power supply circuit is disconnected after main story button makes electromagnetic driver shut down, and belt type blackboard stops movement, afterwards, continues on blackboard Write or draw；Solve the problem that the not high people of height can not partly write above blackboard.

Tall people directly blackboard top writing or draw, write needs and bend over or squat down when can write picture, The main story button for pressing contact starting switch connects magnet coil or connects the circuit generation electromagnetism of magnet coil and electromagnet , it is mutually exclusive and make electromagnetism that electromagnetic field and the electromagnet that magnet coil is produced produce magnetic field that electromagnetic field or permanent magnet produce Coil is rotated forward, and then drives inner press roll to rotate forward；When inner press roll is rotated forward drive belt type blackboard in rotating roller just To rotation, belt type blackboard is moved up after a certain distance, and unclamping disconnection power supply circuit after the main story button of contact starting switch makes Electromagnetic driver is shut down, and belt type blackboard stops movement, afterwards, and continuation is write or drawn on blackboard；Solve tall People can not partly be write below blackboard and need the problem bending over or squat down, improve relaxing for the picture that write on blackboard Adaptive.

The front of blackboard write it is full after when needing the calligraphy and painting on erasing blackboard, press contact starting switch main story button or Invert the circuit generation electromagnetic field that button connects magnet coil or connects magnet coil and electromagnet, the electromagnetism that magnet coil is produced The magnetic field for producing electromagnetic field or permanent magnet generation with electromagnet is mutually exclusive and magnet coil is rotated forward or is reversely revolved Turn, then drive inner press roll to rotate forward or backwards；Belt type blackboard is driven when inner press roll rotates forward or backwards in rotating roller Rotate forward or backwards, when belt type blackboard rotates forward or backwards in rotating roller, on the lower surface for rotating to belt type blackboard Writing wipe upper part by fixed outer position when, the fixed outer scraping sub-sections for wiping upper part are wiped off on blackboard lower surface Writing, belt type blackboard all can outer to wipe erasing clean by fixed by the fixed outer part wiped；After blackboard is wiped clean, contact is unclamped Disconnecting power supply circuit after the main story button or reversion button of formula starting switch makes electromagnetic driver shut down, and completes on blackboard The auto-erasing of writing；When fixing outer erase the board, wipe the writing on blackboard off by the way of striking off, striking off on blackboard Writing when, fixed outer erasure does not have air flow to produce wind, and chalk dust sinks and dropped in disposable box naturally, makes religion There is no the winged of chalk dust to flutter in room.

The simple for structure of word environment friendly blackboard, manufacture and easy to use, the automatic wiping of collection and blackboard are wiped in described automatic rotation Function does not fly the chalk dust flutterred when one, automatic blackboard cleaning, protects the environmentally-friendly sanitary in classroom, the horizontal stroke of writing is made again Perpendicular standard, improves quality of instruction.

Brief description of the drawings

Fig. 1 is the cross section structure diagram for the front view that word environment friendly blackboard is wiped in automatic rotation；

Fig. 2 is the surface structure schematic diagram that there is the front view of grid on the surface for the belt type blackboard that word environment friendly blackboard is wiped in automatic rotation；

Fig. 3 is that the surface for the belt type blackboard that word environment friendly blackboard is wiped in automatic rotation does not have the surface structure signal of the front view of grid Figure；

Fig. 4 is the surface structure schematic diagram for the left view that word environment friendly blackboard is wiped in automatic rotation；

Fig. 5 is the cross section structure diagram of the left view of belt type blackboard part；

Fig. 6 is the cross section structure diagram of contact starting switch.

Shown in figure：Heel brace 1, pillar 2, rotating roller 3, belt type blackboard 4, vertical line 5, x wire 6, fixed outer wiping 7, internal pressure Roller 8, central shaft 9, bearing 10, magnet coil 11, permanent magnet 13, housing 14, reversion button 15, rotating forward button 16, rubber bullet Spring 17, transmission first 18, conductor wire 19, contact head 21.

Embodiment

Word environment friendly blackboard is wiped in rotation of the invention automatic to be included belt type blackboard 4, rotating roller 3, inner press roll 8, fixed outer wipes 7, branch Post 2, heel brace 1, central shaft 9, electromagnetic driver, contact starting switch；

The lower end of pillar 2 is fixed on heel brace 1, and the horizontal manufacture at the middle part and upper end of pillar 2 has rotation hole, two pillars 2 The secondary support frame of composition one；The rotary shaft at one two ends of rotating roller 3 is arranged in the rotation hole of the upper end of pillar 2 of a secondary support frame, The rotary shaft at another two ends of rotating roller 3 is arranged in the rotation hole at the middle part of pillar 2 of a secondary support frame, in pillar 2 The rotating roller 3 in portion and the rotating roller composition rotation roller group installed in the upper end of pillar 2, in the sturdy portion of the rotating roller 3 of rotation roller group Belt type blackboard 4 is set with point, manufacture has x wire 6 or without manufacture x wire 6 on the outer surface of belt type blackboard 4, in band Manufacture has vertical line 5 or without the vertical line 5 of manufacture, x wire 6 and vertical line 5 and belt type blackboard 4 on the outer surface of formula blackboard 4 Flush with outer surface；Space segment behind above the sturdy part of a rotating roller 3 below and close to two pillars 2 The aft section of upper part be fixed with inner press roll 8, the inner chamber of inner press roll 8 is fixed on central shaft 9 by multiple bearings 10, The two ends of central shaft 9 are separately fixed at the sky in the aft section of the upper part of the two pillars 2, two ends of inner press roll 9 On the pillar 2 of the corresponding scope of center portion point, the surface of revolution of inner press roll 8 is contacted and including with the inside one side of belt type blackboard 4 Pressure roller 8 below one side belt type blackboard 4 backward face pressure and belt type blackboard 4 is protruded backward；In the inner chamber close to the one end of inner press roll 8 Driving coil 11 is fixed with wall corresponding with the position of fixed electromagnet or permanent magnet 13 on center shaft and constitute electricity The electromagnetic field that magnetic driven device is produced drives inner press roll 8 to rotate, and the circuit of driving coil 11 is opened by slip ring and contact startup The output circuit connection of pass, the output circuit of the circuit of magnet coil also with contact starting switch be connected, and contact startup is opened The supply line of pass is connected with power supply, and the supply line of electromagnetic driver, which is fixed on central shaft 9, to be passed outside inner press roll 8, contact Formula starting switch is arranged on the position that other parts are fitted without on pillar 2；Belt type blackboard 4 in a rotating roller 3 below Lower end outer surface on be fixed with it is fixed outer wipe 7, fixed outer 7 two ends of wiping are fixed on two close to the lower end of belt type blackboard 4 On the medial surface of pillar 2；Belt type blackboard 4 is on inner press roll 8 and rotation roller group, the one side of the fixed outer wiping 7 in outer surface The front of blackboard, outer surface have it is fixed it is outer wipe 7 one side be blackboard the back side, the locular wall in the back side towards classroom is installed, front Installed towards student.

Described inner press roll 8 is manufactured as the pressure roller of hollow pipe-type, and multiple bearing holder (housing, cover)s are provided with the interior intracavitary of inner press roll 8 Inner press roll 8 is supported on central shaft 9, inner press roll 8 is rotated around central shaft.

Described central shaft 9 is manufactured as the axle for being fixed on and inner press roll 8 being supported on pillar 2, and central shaft 9 passes through inner press roll 8 Inner chamber after, two ends are all fixed on pillar 2.

Described electromagnetic driver is manufactured as dynamic equipment can rotating and reverse, using electrical energy drive；Electromagnetism drives Dynamic device includes magnet coil 11 and electromagnet two parts, or electromagnetic driver includes magnet coil 11 and permanent magnet 13 two Point；Described magnet coil 11 and electromagnet are can to produce the coil of electromagnetic field, and permanent magnet 13 is that magnetic field will not be because of disconnected Electricity and the permanent magnetic field body disappeared, magnet coil 11 is fixed on the internal chamber wall of inner press roll, electromagnet and permanent magnet 13 Fix on center shaft；Described magnet coil 11 is similar in appearance to the mat coil of motor, and electromagnet and permanent magnet 13 are similar In the iron core of motor.

Described contact starting switch is manufactured as rubber spring 17, contact head 21, transmits first 18, conductor wire 19, just Turn button 16, reversion button 15 and the several parts of housing 14；Have at the top of housing 14 via pass through housing 14, main story button and Invert button 15 upper end diameter it is small partially pass through via, the upper end of transmission first 18 is separately fixed at main story button and reversion is pressed The lower end of button 15；Bottom in housing 14 is provided with below two contact heads 21, rubber spring 17 and is partly enclosed on contact head Partly be enclosed on above 21 internal diameter is small on part, above rubber spring 17 internal diameter of transmission first 18 it is small below on part； Below the diameter of contact head 21 is big part and transmit first 18 diameter it is big above part connect conductor wire 19 respectively, contact starts The electric current input conductor wire 19 of connection in switch is connected with the live wire of power supply, electric current output conductor wire 19 enters with electromagnetic driver Enter live wire connection, the line of power supply to electromagnetic driver using be directly connected to and without contact starting switch；Installed in rubber Gap is left in the upper end of contact head 21 in the endoporus of glue spring 17 and the lower end of transmission first 18, is pressing main story button or reversion During button 15, with the upper end of main story button or the contact head 21 of the corresponding installation of reversion button 15 can with transmit first 18 lower end Contact and pass through the supply line that conductor wire 19 connects electromagnetic driver；Electromagnetic driver is rotated forward when pressing main story button, is pressed Electromagnetic driver is inverted when inverting button 15, and electromagnetic driver shuts down during release button；Described rubber spring 17 is used Rubber is manufactured, and is manufactured as the rubber bodies of tubular type, the function of spring is realized using the deformation return function of rubber.

Described pillar 2, which is manufactured as carrying rotating roller 3 and weight, the upper end of belt type blackboard 4, to be had and there is rotation at middle part The support cylinder in hole；

Described heel brace 1 is manufactured as the horizontal cylinder or disking body of the weight of H load-bearing pillar 2, rotating roller 3 and belt type blackboard 4.

Described rotating roller 3 is manufactured as middle cylinder thick, small in ends, and part small in ends is manufactured as smooth Rotary shaft；

Described belt type blackboard 4 is manufactured as flexible using one or more of material manufactures in plastics, nylon, rubber The plate of coil type；The plate of described coil type can also be manufactured as the plate of the smooth coil type in surface；Again by flexible volume The plate of belt surrounds the ring of a long-tube, the end at the two ends of interface is polished into after beveled mouth again consolidated with viscose glue afterwards Blackboard that is fixed and turning into conveyer belt type；Described belt type blackboard 4 can also be added during fabrication in the plate of coil type warp and Parallel is come the long ability of tension that increases belt type blackboard 4；

Outside described fixation wipe 7 contact with belt type blackboard 4 above partly using softness fiber or sponge manufacture, be manufactured as The chalk trace eraser on blackboard can be wiped；The fixed outer part being partly fixed on below 7 with two ends on pillar 2 of wiping is used Hard material is manufactured；It is fixed outer to wipe 7 writings that be on erasing blackboard when rotating roller 3 drives belt type blackboard 4 to rotate.

Chalk dust is set not fly to flutter everywhere in order to which chalk dust is collected, additionally it is possible to close in fixed outer wiping 7 Simultaneously it is fixed with disposable box to collect chalk dust behind following pillar 2；Described disposable box is that rectangular have bottom uncovered Box, the two ends of disposable box are separately fixed on two pillars 2.

In order that fixed outer wiping 7 is wiped totally when erasing the board, the one side erased the board that 7 are wiped outside described fixation can also Blade insert is manufactured as using elastomeric material.In order to make chalk be write on the plate of coil type, described chalk can be with It is hard chalk, it may also be said to soft chalk；Described hard chalk is traditional common chalk；Described soft chalk is can be on surface The strong pen of the adhesive force that writes or paint on the plate of smooth coil type, such as marking pen.

Laterally write neat on blackboard for convenience, there is x wire 6 on the outer surface of blackboard；Described x wire 6 It is the dotted line of fine line or dotted line or chain-dotted line or ellipsis formula；

The lines of neat or the text alignment with up-downgoing or the picture that aligns longitudinally are write on blackboard for convenience, in blackboard There is vertical line on outer surface；Described vertical line 5 is the dotted line of fine line or dotted line or chain-dotted line or ellipsis formula.

In use, directly write or drawn on blackboard with chalk；The not high people of height is directly in the middle and lower part book of blackboard Write or draw, when writing blackboard bottom, the main story button 16 for pressing contact starting switch connects magnet coil 11 or connects electricity The circuit of magnetic coil 11 and electromagnet produces electromagnetic field, and the electromagnetic field that magnet coil 11 is produced is with electromagnet generation electromagnetic field or forever The magnetic field that long magnet 13 is produced is mutually exclusive and rotates forward magnet coil 11, then drives inner press roll 8 to rotate forward；Internal pressure Drive belt type blackboard 4 to be rotated forward in rotating roller 3 when roller 8 is rotated forward, belt type blackboard 4 is moved up after a certain distance, unclamp Power supply circuit is disconnected after the main story button 16 of contact starting switch makes electromagnetic driver shut down, and belt type blackboard 4 stops moving Dynamic, afterwards, continuation is write or drawn on blackboard；Solve what the not high people of height can not partly write above blackboard Problem.

Tall people directly blackboard top writing or draw, write needs and bend over or squat down when can write picture, The main story button 16 for pressing contact starting switch connects magnet coil 11 or connects the circuit production of magnet coil 11 and electromagnet Mutually arrange in raw electromagnetic field, the magnetic field that the electromagnetic field that magnet coil 11 is produced produces electromagnetic field or the generation of permanent magnet 13 with electromagnet Denounce and rotate forward magnet coil 11, then drive inner press roll 8 to rotate forward；Drive belt black when inner press roll 8 is rotated forward Plate 4 is rotated forward in rotating roller 3, and belt type blackboard 4 is moved up after a certain distance, unclamps the main story button of contact starting switch Power supply circuit is disconnected after 16 makes electromagnetic driver shut down, and belt type blackboard 4 stops movement, afterwards, and continuation is write on blackboard Or draw；Solving tall people and can not partly being write below blackboard needs the problem bending over or squat down, improves Write on blackboard the comfortableness of picture.

When the front of blackboard needs the calligraphy and painting on erasing blackboard after writing completely, the main story button 16 of contact starting switch is pressed Or reversion button connects magnet coil 11 or connects the circuit generation electromagnetic field of magnet coil 11 and electromagnet, magnet coil 11 is produced The magnetic field that raw electromagnetic field and electromagnet generation electromagnetic field or permanent magnet 13 are produced is mutually exclusive and makes magnet coil 11 positive Rotation is reversely rotated, and then drives inner press roll 8 to rotate forward or backwards；Inner press roll 8 drives belt when rotating forward or backwards Blackboard 4 is rotated forward or backwards in rotating roller 3, when belt type blackboard 4 rotates forward or backwards in rotating roller 3, is being rotated to Writing on the lower surface of belt type blackboard 4 by it is fixed it is outer wipe 7 upper parts position when, the fixed outer wiping for wiping 7 upper parts Subdivision wipes the writing on blackboard lower surface off, and belt type blackboard 4 all can be dry by fixed outer wiping erasing by fixing the outer part wiped Only；Disconnecting power supply circuit after blackboard is wiped clean, after the main story button 16 or reversion button that unclamp contact starting switch makes electromagnetism Driver shuts down, and completes the auto-erasing of the writing on blackboard；When fixing outer erase the board, scraped by the way of striking off Fall the writing on blackboard, when striking off the writing on blackboard, fixed outer erasure does not have air flow to produce wind, chalk dust Naturally sink and drop in disposable box, make there is no the winged of chalk dust to flutter in classroom.

Claims (2)

1. word environment friendly blackboard is wiped in a kind of automatic rotation, including belt type blackboard, rotating roller, inner press roll, fixed outer wiping, pillar, heel brace, Central shaft, electromagnetic driver, contact starting switch, it is characterised in that：

The lower end of pillar is fixed on heel brace, and the horizontal manufacture at the middle part and upper end of pillar has rotation hole, two pillar compositions One secondary support frame；The rotary shaft at one rotating roller two ends is arranged in the rotation hole of the pillar upper end of a secondary support frame, another The rotary shaft at rotating roller two ends is arranged in the rotation hole in the middle part of the pillar of a secondary support frame, the rotating roller in the middle part of pillar Rotating roller composition rotation roller group with installed in pillar upper end, belt is set with the sturdy part of the rotating roller of rotation roller group Blackboard, without manufacture x wire and vertical line on the outer surface of belt type blackboard；The sturdy part of a rotating roller below Space segment behind above and the aft section in the upper part close to two pillars are fixed with inner press roll, inner press roll Inner chamber is fixed on center shaft by multiple bearings, and the two ends of central shaft are separately fixed at close to the upper part of two pillars Corresponding in aft section, inner press roll two ends hollow parts on the pillar of scope, the surface of revolution and belt of inner press roll are black The inside one side contact of plate and the belt type blackboard on one side behind inner press roll backward face pressure and belt type blackboard is protruded backward； Driving coil and fixed electromagnet or permanent magnet on center shaft are being fixed with the internal chamber wall of inner press roll one end Position is corresponding and constitutes the electromagnetic field of electromagnetic driver generation to drive inner press roll to rotate, and the circuit of driving coil passes through cunning Ring is connected with the output circuit of contact starting switch, and the circuit of magnet coil also connects with the output circuit of contact starting switch Connect, the supply line of contact starting switch is connected with power supply, the supply line of electromagnetic driver is fixed to be passed on center shaft Outside inner press roll, contact starting switch is arranged on the position that other parts are fitted without on pillar；In a rotating roller below Belt type blackboard lower end outer surface on be fixed with it is fixed outer wipe, the fixed outer two ends wiped are fixed on close to belt type blackboard lower end Two pillars medial surface on；Belt type blackboard is on inner press roll and rotation roller group, and the one of the fixed outer wiping in outer surface Face is the front of blackboard, and there is the back side that the fixed outer one side wiped is blackboard outer surface, and the locular wall in the back side towards classroom is installed, front Installed towards student；

Described inner press roll is manufactured as the pressure roller of hollow pipe-type, is provided with the interior intracavitary of inner press roll during multiple bearing holder (housing, cover)s are mounted in Inner press roll is supported on heart axle, inner press roll is rotated around central shaft；

Described central shaft be manufactured as be fixed on pillar support inner press roll axle, central shaft through inner press roll inner chamber after, Two ends are all fixed on pillar；

Described electromagnetic driver is manufactured as dynamic equipment can rotating and reverse, using electrical energy drive；Electromagnetic driver Include magnet coil and permanent magnet two parts including magnet coil and electromagnet two parts, or electromagnetic driver；Described electricity Magnetic coil and electromagnet are can to produce the coil of electromagnetic field, permanent magnet be magnetic field will not be disappeared because of power-off it is permanent Magnetic field body, magnet coil is fixed on the internal chamber wall of inner press roll, and electromagnet and permanent magnet are fixed on center shaft；Described Magnet coil is similar in appearance to the mat coil of motor, the iron core of electromagnet and permanent magnet similar in appearance to motor；

Described contact starting switch is manufactured as rubber spring, contact head, transmits head, conductor wire, rotate forward button, invert and press Button and the several parts of housing；There is via to pass through housing at the top of housing, the upper end diameter of main story button and reversion button is small Via is partially passed through, the upper end of transmission head is separately fixed at the lower end of main story button and reversion button；Bottom peace in housing Equipped with two contact heads, be partly enclosed on below rubber spring the internal diameter of contact head it is small above on part, rubber spring it is upper Face part be enclosed on the internal diameter of transmission head it is small below on part；Part and big upper of transmission head diameter below contact head diameter is big Face part connects the live wire connection of the electric current input conductor wire and power supply of connection in conductor wire, contact starting switch, electricity respectively The entrance live wire of stream output conductor wire and electromagnetic driver is connected, the line of power supply to electromagnetic driver using be directly connected to without By contact starting switch；Between the upper end of contact head in the endoporus of rubber spring and the lower end of transmission head are left Gap, when pressing main story button or reversion button, the upper end ability of the contact head of installation corresponding with main story button or reversion button It is enough to pass through the supply line that conductor wire connects electromagnetic driver with transmitting the lower end in contact of head；Electromagnetism drives when pressing main story button Dynamic device is rotated forward, and electromagnetic driver is inverted when pressing reversion button, and electromagnetic driver shuts down during release button；Described rubber Spring is manufactured using rubber, is manufactured as the rubber bodies of tubular type, the function of spring is realized using the deformation return function of rubber；

Weight, the upper end that described pillar is manufactured as carrying rotating roller and belt type blackboard have and there is the support of rotation hole at middle part Cylinder；

Described heel brace is manufactured as the horizontal cylinder or disking body of the weight of H load-bearing pillar, rotating roller and belt type blackboard；

Described rotating roller is manufactured as middle cylinder thick, small in ends, and part small in ends is manufactured as smooth rotation Axle；

Described belt type blackboard uses one or more of material manufactures in plastics, nylon, rubber, is manufactured as flexible volume The plate of belt；The plate of described coil type can also be manufactured as the plate of the smooth coil type in surface；Again by flexible winding The plate of formula surrounds the ring of a long-tube, the end at the two ends of interface is polished into after beveled mouth again fixed with viscose glue afterwards And the blackboard as conveyer belt type；Described belt type blackboard can also add warp and weft in the plate of coil type during fabrication Come the long ability of tension for increasing belt type blackboard；

Wiped outside described fixation and partly manufactured above being contacted with belt type blackboard using soft fiber or sponge, be manufactured as energy Enough wipe the chalk trace eraser on blackboard；The part on pillar is partly fixed on below fixed outer wiping with two ends using hardness Material manufacture；When rotating roller drives belt type blackboard to rotate, it is fixed outer wipe can be on erasing blackboard writing；

Chalk dust is set not fly to flutter everywhere in order to which chalk dust is collected, additionally it is possible to close to below fixed outer wiping Disposable box is simultaneously fixed with behind pillar to collect chalk dust；Described disposable box is the rectangular box for having a bottom uncovered, The two ends of disposable box are separately fixed on two pillars；

In use, directly write or drawn on blackboard with chalk；The not high people of height directly blackboard middle and lower part writing or Draw, when writing blackboard bottom, press contact starting switch main story button connect magnet coil or connect magnet coil and The circuit of electromagnet produces electromagnetic field, and the electromagnetic field that magnet coil is produced is produced with electromagnet generation electromagnetic field or permanent magnet Magnetic field is mutually exclusive and rotates forward magnet coil, then drives inner press roll to rotate forward；Driven when inner press roll is rotated forward Belt type blackboard is rotated forward in rotating roller, and belt type blackboard is moved up after a certain distance, unclamps the main story of contact starting switch Power supply circuit is disconnected after button makes electromagnetic driver shut down, and belt type blackboard stops movement, afterwards, and continuation is write on blackboard Or draw；Solve the problem that the not high people of height can not partly write above blackboard；

Tall people directly blackboard top writing or draw, write needs and bend over or squat down when can write picture, press The main story button of contact starting switch connects magnet coil or connects the circuit generation electromagnetic field of magnet coil and electromagnet, electricity The magnetic field that the electromagnetic field and electromagnet generation electromagnetic field or permanent magnet of magnetic coil generation are produced is mutually exclusive and makes magnet coil Rotate forward, then drive inner press roll to rotate forward；Drive belt type blackboard is positive in rotating roller to turn when inner press roll is rotated forward Dynamic, belt type blackboard is moved up after a certain distance, and unclamping disconnection power supply circuit after the main story button of contact starting switch makes electromagnetism Driver is shut down, and belt type blackboard stops movement, afterwards, and continuation is write or drawn on blackboard；Solve tall people Can not partly be write the problem for needing to bend over or squat down below blackboard, improve the comfortable of the picture that write on blackboard Property；

When the front of blackboard needs the calligraphy and painting on erasing blackboard after writing completely, main story button or the reversion of contact starting switch are pressed Button, which connects magnet coil or connects the circuit of magnet coil and electromagnet, produces electromagnetic field, the electromagnetic field that magnet coil is produced with The magnetic field that electromagnet generation electromagnetic field or permanent magnet are produced is mutually exclusive and magnet coil is rotated forward or is reversely rotated, after And drive inner press roll to rotate forward or backwards；Drive belt type blackboard positive in rotating roller when inner press roll rotates forward or backwards or Rotate backward, when belt type blackboard rotates forward or backwards in rotating roller, the writing on the lower surface for rotating to belt type blackboard When wiping the position of upper part outside by fixing, the scraping sub-sections of fixed outer wiping upper part wipe the word on blackboard lower surface off Mark, belt type blackboard all can be clean by fixed outer erasing by the fixed outer part wiped；After blackboard is wiped clean, unclamp contact and open Disconnecting power supply circuit after the main story button or reversion button of dynamic switch makes electromagnetic driver shut down, and completes the writing on blackboard Auto-erasing；When fixing outer erase the board, wipe the writing on blackboard off by the way of striking off, striking off the word on blackboard During mark, fixed outer erasure does not have air flow to produce wind, and chalk dust sinks and dropped in disposable box, makes in classroom naturally There is no the winged of chalk dust to flutter.

2. word environment friendly blackboard is wiped in automatic rotation according to claim 1, it is characterised in that：In order that fixed outer wipe is being blacked Wipe totally during plate, the one side erased the board wiped outside described fixation can also be manufactured as blade insert using elastomeric material.