CN106696550A - Rotatable environment-friendly blackboard capable of automatically erasing words - Google Patents

Abstract

The invention discloses a rotatable environment-friendly blackboard capable of automatically erasing words, and belongs to the field of teaching appliances. The lower ends of struts of the blackboard are fixed to foot supports, the middle upper portion of the struts are provided with rotating holes, and the upper ends of the struts are provided with lower screw holes; rotating holes are transversely formed in the upper ends of upper supports, and upper screw holes are formed in the lower ends of the upper supports; the lower screw holes are connected with lower threads, and the upper screw holes are connected with upper threads; thick parts of two rotary rollers are sleeved with belt-type blackboard bodies; the surfaces, facing students, of the blackboard bodies in a class room are the front surfaces, and the surfaces, abutting against the wall of the class room, of the blackboard bodies are the back surfaces; a fixed outer eraser is installed outside the back surfaces of the belt-type blackboard bodies, and an inner pressing roller is installed inside the back surfaces of the belt-type blackboard bodies; and the inner pressing roller is internally provided with a center shaft, an electromagnetic coil and an electromagnet. The rotatable environment-friendly blackboard capable of automatically erasing the words is simple in structure and convenient to manufacture and use and integrates automatic erasing and blackboard functions, when the blackboard is wiped automatically, flying chalk dust is avoided, the environment and sanitation in the class room are protected, meanwhile, horizontal and vertical written words are standard, and the teaching quality is improved.

Description

Rotational automatic wiping word environment friendly blackboard

Technical field

The present invention relates to a kind of rotational automatic wiping word environment friendly blackboard in the blackboard field of teaching.

Background technology

At present, teacher says that the blackboard for using 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 for erasing the board causes harm.Therefore, we are by 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, can automatically the rotational automatic wiping word wiped of word on blackboard Environment friendly blackboard and its manufacture method.

To achieve the above object, rotational automatic wiping word environment friendly blackboard of the present invention mainly includes belt type blackboard, rotation Roller, inner press roll, fixed outer wiping, pillar, heel brace, upper support, lower screw, upper screw, adjustment bolt, central shaft, electromagnetic driver, connect Touch starting switch；

The lower end of pillar is fixed on heel brace, and the horizontal manufacture at the upper middle part of pillar has rotation hole, and the upper end of pillar is manufactured under having Screw；The lower end manufacture that the horizontal manufacture of the upper end of upper support has rotation hole, upper support has upper screw；Part below adjustment bolt The upper end of lower screw thread is connected with the lower end of the adjustment card handle of the center section of adjustment bolt, adjusts upper end and the adjustment bolt of card handle Above part upper screw thread lower end connection；The manufacture direction of the screw thread in screw thread in upper screw and lower screw conversely, under The manufacture of the screw thread on screw thread on screw thread and upper screw thread is in opposite direction；Lower screw coordinates and is connected with lower screw thread, upper screw with Upper screw thread coordinates and connects；One support frame of one heel brace and a pillar and an adjustment bolt and a upper support composition, two The secondary support frame of individual support frame composition one；

One rotary shaft at rotating roller two ends is arranged in the rotation hole of the pillar of a secondary support frame, another rotating roller two ends Rotary shaft is arranged in the rotation hole of the upper support of a secondary support frame, rotating roller and the rotation being arranged on pillar in upper support Transfer roller composition rotation roller group, is set with belt type blackboard, in the outer of belt type blackboard on the sturdy part of the rotating roller of rotation roller group Manufacture has x wire or without manufacture x wire on surface, and manufacture has vertical line or without manufacture on the outer surface of belt type blackboard The flush with outer surface of vertical line, x wire and vertical line and belt type blackboard；The rotating roller of installation is thick in the rotation hole of pillar Strengthen the space segment behind above part and be fixed with inner press roll in the aft section near two upper parts of pillar, The inner chamber of inner press roll passes through multiple bearings and fixes on center shaft, and the two ends of central shaft are separately fixed at the upper of close two pillars Hold on the pillar of scope corresponding to the hollow parts in the aft section of part, inner press roll two ends, the surface of revolution of inner press roll Contacted with the inside of belt type blackboard one side and the belt type blackboard on one side behind inner press roll backward face pressure and make belt type blackboard to After protrude；Driving coil and fixed electromagnet or permanent on center shaft are being fixed with the internal chamber wall of inner press roll one end The position of magnet is corresponding and constitutes the electromagnetic field of electromagnetic driver generation and drives inner press roll to rotate, the circuit of driving coil Be connected with the output circuit of contact starting switch by slip ring, the circuit of magnet coil also with the output of contact starting switch Circuit is connected, and the supply line of contact starting switch is connected with power supply, and the supply line of electromagnetic driver is fixed on central shaft On pass outside inner press roll, contact starting switch is arranged on and the position of other parts is fitted without on pillar；A rotation below Fixed outer wiping is fixed with the outer surface of the lower end of the belt type blackboard on transfer roller, the fixed outer two ends wiped are fixed on black near belt On two medial surfaces of pillar of plate lower end；Belt type blackboard is arranged on inner press roll and rotation roller group, and outer surface is unfixed outer The one side of wiping is the front of blackboard, and the one side that there is fixed outer wiping outer surface is the back side of blackboard, and the back side is pacified towards the locular wall in classroom Fill, just installed facing to student.

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

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

Described electromagnetic driver is created 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 the coil that can produce 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 similar in appearance to motor mat coil, the iron core of electromagnet and permanent magnet similar in appearance to motor.

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

There is spiral shell weight, the upper end that described pillar creates support, adjustment bolt, rotating roller and belt type blackboard in carrying Pit, upper middle part have the support cylinder of rotation hole；

The transverse direction that described upper support creates upper end has the rotation hole, lower end to have screwed hole cylinder；

Described heel brace creates the horizontal cylinder of the weight of H load-bearing pillar, upper support, adjustment bolt, rotating roller and belt type blackboard Or disking body；

Described adjustment bolt creates lower screw thread, three parts of adjustment card handle and upper screw thread, and adjustment card handle is manufactured at middle part, Below adjustment card handle, upper screw thread manufacture is being adjusted above card handle, the center line of lower screw thread and upper screw thread for lower screw thread manufacture Manufacture is on the same line；Three parts of adjustment card handle and lower screw thread and upper screw thread create an entirety, or separately manufactured It is fixed together again afterwards.

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

Described belt type blackboard creates flexible table using one or more material manufactures in plastics, nylon, rubber The plate of the smooth coil type in face, then the plate of flexible coil type is surrounded into a ring for long-tube, afterwards again by interface The end at two ends be polished into after beveled mouth the blackboard that conveyer belt type is fixed and turned into viscose glue；Described belt type blackboard is in manufacture When warp and parallel can also be added to increase the tension of belt type blackboard ability long in the plate of coil type；

Wiped outside described fixation and partly manufactured using soft fiber or sponge above being contacted with belt type blackboard, create 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.

In order that belt type blackboard can be tightened or unclamped in rotating roller, rotate the adjustment card handle of adjustment bolt and make spiral shell Line rotates simultaneously with lower screw thread, is reversely promoted by upper screw and lower screw upper screw thread rotates with lower screw thread simultaneously when and is moved in support Or support and move down on pulling, belt type blackboard is tightened in rotating roller when being moved in upper support, and belt type blackboard is in rotating roller release when upper support is moved down； Belt type blackboard drives belt type blackboard when rotating roller is tightened beneficial to the rotating roller write on blackboard and be easily installed on pillar Rotated in two rotating rollers；Belt type blackboard is folded down beneficial to belt type blackboard when rotating roller is unclamped from rotating roller.

Chalk dust is set not fly to flutter everywhere in order to chalk dust is collected, additionally it is possible near 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 wiping is wiped totally when erasing the board, the one side for erasing the board wiped outside described fixation can also be adopted Blade insert is created with elastomeric material.

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

When using, directly write or drawn on blackboard with chalk；Height people not high 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, the electromagnetic field that magnet coil is produced to produce electromagnetic field or permanent magnet to produce with electromagnet Raw magnetic field is mutually exclusive and rotate forward magnet coil, then drive inner press roll rotate forward；When inner press roll is rotated forward Drive belt type blackboard to be rotated forward in rotating roller, after moving a certain distance on belt type blackboard, 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 height people not high can not partly write above blackboard.

Tall people directly writes or draws on the top of blackboard, writes needs and bends 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 , the electromagnetic field that magnet coil is produced produces the magnetic field that electromagnetic field or permanent magnet are produced mutually exclusive and makes electromagnetism with electromagnet 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, after moving a certain distance on belt type blackboard, disconnection power supply circuit makes after unclamping the main story button of contact starting switch Electromagnetic driver is shut down, and belt type blackboard stops movement, and afterwards, 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 Reversion button connects magnet coil or connects the circuit generation electromagnetic field of magnet coil and electromagnet, the electromagnetism that magnet coil is produced Field produces the magnetic field that electromagnetic field or permanent magnet are produced mutually exclusive and magnet coil is rotated forward or is reversely revolved with electromagnet Turn, then drive inner press roll to rotate forward or backwards；Drive belt type blackboard is in rotating roller when inner press roll rotates forward or backwards 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 outer erasing the board is fixed, the writing on blackboard is wiped off by the way of striking off, striking off on blackboard Writing when, the outer erasure of fixation does not have air flow that wind, chalk dust would not be produced to sink naturally and drop in disposable box, makes religion There is no the winged of chalk dust to flutter in room.

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

Brief description of the drawings

Fig. 1 is the cross section structure diagram of the front view of rotational automatic wiping word environment friendly blackboard；

Fig. 2 be it is rotational automatic wiping word environment friendly blackboard belt type blackboard surface have grid front view surface structure schematic diagram；

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

Fig. 4 is the surface structure schematic diagram of the left view of rotational automatic wiping word environment friendly blackboard；

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, it is upper support 5, lower screw 6, upper screw 7, lower screw thread 8, Upper screw thread 9, central shaft 10, adjustment card handle 11, vertical line 12, x wire 13, inner press roll 14, it is fixed it is outer wipe 15, permanent magnet 16, Magnet coil 17, bearing 18, housing 19, reversion button 20, rotate forward button 21, rubber spring 22, transmit first 23, contact head 24, Conductor wire 25.

Specific embodiment

The rotational automatic wiping word environment friendly blackboard of the present invention include belt type blackboard 4, rotating roller 3, inner press roll 14, it is fixed it is outer wipe 15, Pillar 2, heel brace 1, upper support 5, lower screw 6, upper screw 7, adjustment bolt, central shaft 10, electromagnetic driver, contact start to be opened Close.

The lower end of pillar 2 is fixed on heel brace 1, and the horizontal manufacture at the upper middle part of pillar 2 has rotation hole, the upper end of pillar 2 Manufacture has lower screw 6；The lower end manufacture that the horizontal manufacture of the upper end of upper support 5 has rotation hole, upper support 5 has upper screw 7；Adjustment bolt Below the upper end of lower screw thread 8 of part be connected with the lower end of the adjustment card handle 11 of the center section of adjustment bolt, adjust card handle 11 upper end is connected with the lower end of the upper screw thread 9 of part above adjustment bolt；In screw thread in upper screw 7 and lower screw 6 The manufacture direction of screw thread is conversely, the manufacture of the screw thread on screw thread on lower screw thread 8 and upper screw thread 9 is in opposite direction；Lower screw 6 is with Screw thread 8 coordinates and connects, and upper screw 7 coordinates and is connected with upper screw thread 9；One heel brace 1 and a pillar 2 and an adjustment bolt And a upper support 5 constitutes a support frame, two secondary support frames of support frame composition one.

One rotary shaft at the two ends of rotating roller 3 is arranged in the rotation hole of the pillar 2 of a secondary support frame, another rotating roller The rotary shaft at 3 two ends is arranged in the rotation hole of the upper support 5 of a secondary support frame, the rotating roller 3 in upper support 5 be arranged on Rotating roller composition rotation roller group on pillar 2, belt type blackboard 4 is set with the sturdy part of the rotating roller 3 of rotation roller group, Manufacture has x wire 13 or without manufacture x wire 13 on the outer surface of belt type blackboard 4, is manufactured on the outer surface of belt type blackboard 4 There is vertical line 12 or without the flush with outer surface for manufacturing vertical line 12, x wire 13 and vertical line 12 and belt type blackboard 4；In pillar Space segment behind above the sturdy part of the rotating roller 3 installed in 2 rotation hole and near the upper of two pillars 2 The aft section of part is held to be fixed with inner press roll 14, the inner chamber of inner press roll 14 passes through multiple bearings 18 and fixes on the center shaft 10, The two ends of central shaft 10 are separately fixed in two aft sections of the upper part of the pillar 2, two ends of inner press roll 14 On the pillar 2 of scope corresponding to hollow parts, the surface of revolution of inner press roll 14 is contacted and handle with the inside one side of belt type blackboard 4 Behind inner press roll 14 belt type blackboard 4 on one side backward face pressure and belt type blackboard 4 is protruded backward；Near the one end of inner press roll 14 Internal chamber wall on be fixed with driving coil 17 it is corresponding with the position of fixed electromagnet or permanent magnet 16 on the center shaft 10, And constitute the electromagnetic field of electromagnetic driver generation and drive the inner press roll 14 to rotate, driving coil 17 circuit is by slip ring and contacts The output circuit connection of formula starting switch, the output circuit of the circuit of magnet coil also with contact starting switch be connected, contact The supply line of formula starting switch is connected with power supply, and the supply line of electromagnetic driver fixes and passes inner press roll on the center shaft 10 Outside 14, contact starting switch is arranged on pillar 2 position for being fitted without other parts；In a rotating roller 3 below It is fixed with the outer surface of the lower end of belt type blackboard 4 and fixes outer wiping 15, the two ends of fixed outer wiping 15 is fixed near belt type blackboard 4 On two medial surfaces of pillar 2 of lower end；Belt type blackboard 4 is arranged on inner press roll 14 and rotation roller group, and outer surface is not fixed It is outer wipe 15 one side be blackboard front, outer surface have it is fixed outer wipe 15 one side be blackboard the back side, the back side is towards classroom Locular wall is installed, just installed facing to student.

Described inner press roll 14 creates the pressure roller of hollow pipe-type, and multiple bearings are provided with the inner chamber of inner press roll 14 It is sleeved on central shaft 10 to support inner press roll 14, inner press roll 14 is rotated around central shaft.

Described central shaft 10 creates the axle for being fixed on pillar 2 and supporting inner press roll 14, and central shaft 10 passes through internal pressure Behind the inner chamber of roller 14, two ends are all fixed on pillar 2.

Described electromagnetic driver is created dynamic equipment can rotating and reverse, using electrical energy drive；Electromagnetism drives Dynamic device includes magnet coil 17 and electromagnet two parts, or electromagnetic driver includes magnet coil 17 and permanent magnet 16+ two Point；Described magnet coil 17 and electromagnet are the coils that can produce electromagnetic field, and permanent magnet 16 is that magnetic field will not be because of disconnected Electricity and the permanent magnetic field body that disappears, magnet coil 17 is fixed on the internal chamber wall of inner press roll, electromagnet and permanent magnet 16 Fix on center shaft；Described magnet coil 17 is similar in appearance to the mat coil of motor, and electromagnet and permanent magnet 16 are similar In the iron core of motor.

Described contact starting switch creates rubber spring 22, contact head 24, transmits first 23, contact head 24, just Turn button 21, reversion button 20 and the several parts of housing 19；Have via through housing 19 at the top of housing 19, main story button and Invert button 20 upper end diameter it is small partially pass through via, the upper end of transmission first 23 is separately fixed at main story button and reversion is pressed The lower end of button 20；Bottom in housing 19 is provided with two contact heads 24, and contact head is partly enclosed within below rubber spring 22 Partly be enclosed within above 24 internal diameter is small on part, above rubber spring 22 internal diameter of transmission first 23 it is small below on part； Below the diameter of contact head 24 is big part and first 23 diameter of transmission it is big above part connect contact head 24 respectively, contact starts The electric current input contact head 24 of connection in switch is connected with the live wire of power supply, electric current output contact head 24 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 the contact head 24 in the endoporus of glue spring 22 with the lower end of transmission first 23, is pressing main story button or reversion During button 20, the upper end of the contact head 24 of installation corresponding with main story button or reversion button 20 can be with the lower end of transmission first 23 Contact and pass through the supply line that contact head 24 connects electromagnetic driver；Electromagnetic driver is rotated forward when pressing main story button, is pressed Electromagnetic driver reversion during reversion button 20, electromagnetic driver shuts down during release button；Described rubber spring 22 is used Rubber is manufactured, and creates the rubber bodies of tubular type, and the function of spring is realized using the deformation return function of rubber.

Described pillar 2 creates weight, the upper end for carrying support 5, adjustment bolt, rotating roller 3 and belt type blackboard 4 Having screwed hole, upper middle part has the support cylinder of rotation hole；

The transverse direction that described upper support 5 creates upper end has the rotation hole, lower end to have screwed hole cylinder；

Described heel brace 1 creates the horizontal stroke of the weight of H load-bearing pillar 2, upper support 5, adjustment bolt, rotating roller 3 and belt type blackboard 4 To cylinder or disking body；

Described adjustment bolt creates lower screw thread 8, adjustment card handle 11 and 9 three parts of upper screw thread, and adjustment card handle 11 is manufactured At middle part, lower screw thread 8 is manufactured below adjustment card handle 11, and upper screw thread 9 is manufactured above adjustment card handle 11, the lower He of screw thread 8 The center line manufacture of upper screw thread 9 is on the same line；Adjustment card handle 11 is created with 9 three parts of lower screw thread 8 and upper screw thread One entirety, or it is separately manufactured after be fixed together again.

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

Described belt type blackboard 4 is created flexible using one or more material manufactures in plastics, nylon, rubber The plate of the smooth coil type in surface, then the plate of flexible coil type is surrounded into a ring for long-tube, afterwards again by interface The end at the two ends at place is polished into after beveled mouth the blackboard that conveyer belt type is fixed and turned into viscose glue；Described belt type blackboard 4 exists Warp and parallel can also be added to increase the tension of belt type blackboard 4 ability long in the plate of coil type during manufacture.

Wiped outside described fixation 15 contact with belt type blackboard 4 above partly manufactured using soft fiber or sponge, make Cause the chalk trace eraser that can be wiped on blackboard；Fixed outer wiping be partly fixed on pillar 2 with two ends below 15 Part is using hard material manufacture；When rotating roller 3 drives belt type blackboard 4 to rotate, it is fixed outer wipe 15 can be on erasing blackboard Writing.

In order that belt type blackboard 4 can be tightened or unclamped in rotating roller 3, rotate the adjustment card handle 11 of adjustment bolt and make Upper screw thread 9 rotates simultaneously with lower screw thread 8, by upper screw 7 and the lower reverse push of screw 6 upper screw thread 9 rotates with lower screw thread 8 simultaneously when Support 5 is moved down on moving or pull in dynamic upper support 5, and belt type blackboard 4 is tightened in rotating roller 3 when being moved in upper support 5, belt when upper support 5 is moved down Blackboard 4 unclamps in rotating roller 3；Belt type blackboard 4 when rotating roller 3 is tightened, beneficial to being write on blackboard and be easily installed in pillar 2 On rotating roller 3 drive belt type blackboard 4 rotated in two rotating rollers 3；Belt type blackboard 4 when rotating roller 3 is unclamped, beneficial to belt Blackboard 4 is folded down from rotating roller 3.

Chalk dust is set not fly to flutter everywhere in order to chalk dust is collected, additionally it is possible near in fixed outer wiping 15 Disposable box is simultaneously fixed with behind following pillar 2 to collect chalk dust；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 15 is wiped totally when erasing the board, the one side for erasing the board that 15 are wiped outside described fixation can also Blade insert is enough created using elastomeric material.

Laterally write neat on blackboard for convenience, there is x wire 13 on the outer surface of blackboard；Described x wire 13 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 12 is the dotted line of fine line or dotted line or chain-dotted line or ellipsis formula.

When using, directly write or drawn on blackboard with chalk；Height people not high 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 presses the main story of contact starting switch Button 21 connects magnet coil 17 or connects the circuit generation electromagnetic field of magnet coil 17 and electromagnet, what magnet coil 17 was produced Electromagnetic field produces the magnetic field that electromagnetic field or permanent magnet 16 are produced mutually exclusive and rotates forward magnet coil with electromagnet, after And drive inner press roll 14 to rotate forward；Belt type blackboard 4 is driven to be rotated forward in rotating roller 3 when inner press roll 14 is rotated forward, band After moving a certain distance on formula blackboard 4, disconnection power supply circuit makes Electromagnetic Drive after unclamping the main story button of contact starting switch Device is shut down, and belt type blackboard 4 stops movement, and afterwards, continuation is write or drawn on blackboard；Solve height people not high not The problem that can be partly write above blackboard.

Tall people directly writes or draws on the top of blackboard, writes needs and bends over or squat down when can write picture, The main story button 21 for pressing contact starting switch connects magnet coil 17 or connects the circuit product of magnet coil 17 and electromagnet Raw electromagnetic field, the electromagnetic field that magnet coil 17 is produced produces the magnetic field that electromagnetic field or permanent magnet 16 are produced mutually to arrange with electromagnet Denounce and rotate forward magnet coil 17, then drive inner press roll 14 to rotate forward；Inner press roll 14 drives belt when rotating forward Blackboard 4 is rotated forward in rotating roller 3, and after moving a certain distance on belt type blackboard 4, the main story for unclamping contact starting switch is pressed Power supply circuit is disconnected after button 21 makes electromagnetic driver shut down, and belt type blackboard 4 stops movement, and afterwards, continuation is write on blackboard Word or picture；Solving tall people and can not partly being write below blackboard needs the problem bending over or squat down, improves The comfortableness of the picture that write on blackboard.

When the front of blackboard needs the calligraphy and painting on erasing blackboard after writing completely, the main story button 21 of contact starting switch is pressed Or reversion button 20 connects magnet coil or connects the circuit generation electromagnetic field of magnet coil 17 and electromagnet, magnet coil 17 is produced Raw electromagnetic field produces the magnetic field that electromagnetic field or permanent magnet 16 are produced mutually exclusive and makes magnet coil 17 positive with electromagnet Rotation is reversely rotated, and then drives inner press roll 14 to rotate forward or backwards；Inner press roll 14 drives band when rotating forward or backwards Formula blackboard 4 is rotated forward or backwards in rotating roller 3, when belt type blackboard 4 rotates forward or backwards in rotating roller 3, in rotation Writing on to the lower surface of belt type blackboard by it is fixed it is outer wipe 15 upper parts position when, fixed outer 15 upper parts of wiping Scraping sub-sections wipe the writing on blackboard lower surface off, and belt type blackboard 4 all can be by fixed outer wiping 15 by fixing the part of outer wiping 15 Erasing is clean；After blackboard is wiped clean, power supply circuit is disconnected after the main story button or reversion button 20 that unclamp contact starting switch Electromagnetic driver is shut down, complete the auto-erasing of the writing on blackboard；It is fixed outer wipe 15 and erase the board when, using striking off Mode wipe writing on blackboard off, when the writing on blackboard is struck off, fixed outer wiping at 15 does not have air flow to produce Raw wind, chalk dust sinks and drops in disposable box naturally, makes do not have the winged of chalk dust to flutter in classroom.

Claims (2)

1. a kind of rotational automatic wiping word environment friendly blackboard, including belt type blackboard, rotating roller, inner press roll, fixed outer wiping, pillar, heel brace, Upper support, lower screw, upper screw, adjustment bolt, 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 upper middle part of pillar has rotation hole, and the upper end of pillar is manufactured under having Screw；The lower end manufacture that the horizontal manufacture of the upper end of upper support has rotation hole, upper support has upper screw；Part below adjustment bolt The upper end of lower screw thread is connected with the lower end of the adjustment card handle of the center section of adjustment bolt, adjusts upper end and the adjustment bolt of card handle Above part upper screw thread lower end connection；The manufacture direction of the screw thread in screw thread in upper screw and lower screw conversely, under The manufacture of the screw thread on screw thread on screw thread and upper screw thread is in opposite direction；Lower screw coordinates and is connected with lower screw thread, upper screw with Upper screw thread coordinates and connects；One support frame of one heel brace and a pillar and an adjustment bolt and a upper support composition, two The secondary support frame of individual support frame composition one；

One rotary shaft at rotating roller two ends is arranged in the rotation hole of the pillar of a secondary support frame, another rotating roller two ends Rotary shaft is arranged in the rotation hole of the upper support of a secondary support frame, rotating roller and the rotation being arranged on pillar in upper support Transfer roller composition rotation roller group, is set with belt type blackboard, in the outer of belt type blackboard on the sturdy part of the rotating roller of rotation roller group Without manufacture x wire and vertical line on surface；After above the sturdy part of the rotating roller installed in the rotation hole of pillar The space segment in face and the aft section in the upper parts of close two pillars are fixed with inner press roll, and the inner chamber of inner press roll passes through Multiple bearings are fixed on center shaft, and the two ends of central shaft are separately fixed near two aft sections of the upper part of pillar On, on the pillar of scope corresponding to the hollow parts at inner press roll two ends, the surface of revolution of inner press roll and the inside of belt type blackboard Simultaneously contact and the belt type blackboard on one side behind inner press roll backward face pressure and belt type blackboard is protruded backward；In Driving coil is fixed with the internal chamber wall of pressure roller one end relative with the position of fixed electromagnet or permanent magnet on center shaft Answer and constitute the electromagnetic field of electromagnetic driver generation to drive inner press roll to rotate, the circuit of driving coil passes through slip ring and contacts The output circuit connection of formula starting switch, the output circuit of the circuit of magnet coil also with contact starting switch be connected, contact The supply line of formula starting switch is connected with power supply, and the supply line of electromagnetic driver fixes and passes inner press roll on center shaft Outward, contact starting switch is arranged on pillar the position for being fitted without other parts；Belt in a rotating roller below Fixed outer wiping is fixed with the outer surface of the lower end of blackboard, the fixed outer two ends wiped are fixed on two near belt type blackboard lower end On the medial surface of pillar；Belt type blackboard is arranged on inner press roll and rotation roller group, and the unfixed outer one side wiped in outer surface is black The front of plate, the one side that there is fixed outer wiping outer surface is the back side of blackboard, and the back side is towards the locular wall installation in classroom, just facing to It is raw to install；

Described inner press roll creates the pressure roller of hollow pipe-type, is provided with the inner chamber 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 create 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 created 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 the coils that can produce 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 similar in appearance to motor mat coil, the iron core of electromagnet and permanent magnet similar in appearance to motor；

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

There is screw thread weight, the upper end that described pillar creates support, adjustment bolt, rotating roller and belt type blackboard in carrying There is the support cylinder of rotation hole in hole, upper middle part；

The transverse direction that described upper support creates upper end has the rotation hole, lower end to have screwed hole cylinder；

Described heel brace creates the horizontal cylinder of the weight of H load-bearing pillar, upper support, adjustment bolt, rotating roller and belt type blackboard Or disking body；

Described adjustment bolt creates lower screw thread, three parts of adjustment card handle and upper screw thread, and adjustment card handle is manufactured at middle part, Below adjustment card handle, upper screw thread manufacture is being adjusted above card handle, the center line of lower screw thread and upper screw thread for lower screw thread manufacture Manufacture is on the same line；Three parts of adjustment card handle and lower screw thread and upper screw thread create an entirety, or separately manufactured It is fixed together again afterwards；

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

Described belt type blackboard creates flexible table using one or more material manufactures in plastics, nylon, rubber The plate of the smooth coil type in face, then the plate of flexible coil type is surrounded into a ring for long-tube, afterwards again by interface The end at two ends be polished into after beveled mouth the blackboard that conveyer belt type is fixed and turned into viscose glue；Described belt type blackboard is in manufacture When warp and parallel can also be added to increase the tension of belt type blackboard ability long in the plate of coil type；

Wiped outside described fixation and partly manufactured using soft fiber or sponge above being contacted with belt type blackboard, create 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；

In order that belt type blackboard can be tightened or unclamped in rotating roller, rotate adjustment bolt adjustment card handle and make screw thread with Lower screw thread rotates simultaneously, reversely promoting move or draw in support upper screw thread rotates with lower screw thread simultaneously when by upper screw and lower screw Dynamic upper support is moved down, and belt type blackboard is tightened in rotating roller when being moved in upper support, and belt type blackboard unclamps in rotating roller when upper support is moved down；Belt Blackboard drives belt type blackboard two when rotating roller is tightened beneficial to the rotating roller write on blackboard and be easily installed on pillar Rotated in individual rotating roller；Belt type blackboard is folded down beneficial to belt type blackboard when rotating roller is unclamped from rotating roller；

Chalk dust is set not fly to flutter everywhere in order to chalk dust is collected, additionally it is possible near 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；

When using, directly write or drawn on blackboard with chalk；Height people not high directly write in the middle and lower part of blackboard 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, the electromagnetic field that magnet coil is produced to produce what electromagnetic field or permanent magnet were produced with electromagnet Magnetic field is mutually exclusive and rotate forward magnet coil, then drive inner press roll rotate forward；Driven when inner press roll is rotated forward Belt type blackboard is rotated forward in rotating roller, after moving a certain distance on belt type blackboard, 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, and afterwards, continuation is write on blackboard Or draw；Solve the problem that height people not high can not partly write above blackboard；

Tall people directly writes or draws on the top of blackboard, writes needs and bends over or squat down when can write picture, presses 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 electromagnetic field that magnetic coil is produced produces the magnetic field that electromagnetic field or permanent magnet are produced mutually exclusive and makes magnet coil with electromagnet Rotate forward, then drive inner press roll to rotate forward；Belt type blackboard forward direction in rotating roller is driven to turn when inner press roll is rotated forward Dynamic, after moving a certain distance on belt type blackboard, disconnection power supply circuit makes electromagnetism after unclamping the main story button of contact starting switch Driver is shut down, and belt type blackboard stops movement, and afterwards, 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 connects magnet coil or connects the circuit of magnet coil and electromagnet and produces electromagnetic field, the electromagnetic field that magnet coil is produced with Electromagnet produces the magnetic field that electromagnetic field or permanent magnet are produced 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 During by the position for fixing outer wiping upper part, 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 outer erasing the board is fixed, the writing on blackboard is wiped off by the way of striking off, striking off the word on blackboard During mark, the outer erasure of fixation does not have air flow that wind, chalk dust would not be produced to sink naturally and drop in disposable box, make in classroom There is no the winged of chalk dust to flutter.

2. it is according to claim 1 it is rotational automatic wiping word environment friendly blackboard, it is characterised in that：In order that fixed outer wiping is being blacked Wipe totally during plate, the one side for erasing the board wiped outside described fixation can also create blade insert using elastomeric material.