CN106696551A - Combined-type rotatable environment-friendly blackboard capable of automatically erasing words - Google Patents

Abstract

The invention discloses a combined-type 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 middles and the upper ends of the struts are provided with rotating holes; the thick part of a rotary roller at the upper ends of the struts and the thick part of a rotary roller in the middles of the struts are sleeved with belt-type blackboard bodies; the surfaces, facing students, of the belt-type blackboard bodies installed in a class room are the front surfaces, and the surfaces, abutting against the wall of the class room, of the belt-type 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 blackboard bodies; and the inner pressing roller is internally provided with a center shaft, a center gear, a planet gear and a gear ring. The combined-type 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

Assembled rotary automatic character-erazing environment friendly blackboard

Technical field

The present invention relates to a kind of Assembled rotary automatic character-erazing 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 Assembled rotary wiped of word on blackboard from It is dynamic to wipe word environment friendly blackboard and its manufacture method.

To achieve the above object, Assembled rotary automatic character-erazing environment friendly blackboard of the present invention mainly includes that belt is black Plate, rotating roller, inner press roll, fixed outer wiping, pillar, heel brace, central shaft, central gear, planetary gear, gear ring, motor, contact Formula 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；One rotary shaft at 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 parts of close two pillars are fixed There is inner press roll, the one end in inner press roll fixes the planetary gear and electricity of the other end on center shaft, in inner press roll by bearing The central gear engagement of the power shaft end of motivation, central shaft and motor respectively in the inner chamber at the two ends of inner press roll, center Axle and motor are separately fixed at the hollow parts in two aft sections of the upper part of pillar, inner press roll two ends On the pillar of corresponding scope, the surface of revolution of inner press roll is contacted and behind inner press roll with the inside one side of belt type blackboard The belt type blackboard on one side backward face pressure and belt type blackboard is protruded backward；Outer surface and inner press roll phase at the back side of belt type blackboard Corresponding position is fixed with fixed outer wiping, and the fixed outer two ends wiped are fixed on behind two upper ends of pillar by support Face；Belt type blackboard is arranged on inner press roll and rotation roller group, and the front that the outer one side wiped is blackboard, appearance are fixed in outer surface The one side that there is fixed outer wiping in face is the back side of blackboard, and the back side is installed towards the locular wall in classroom, just installed facing to student.

Described inner press roll creates the pressure roller of hollow pipe-type, placed in the middle in the inner chamber of hollow pipe-type pressure roller or deflection one End is fixed with fixed every fixed every the inner chamber of inner press roll is divided into left chamber and right chamber；Single or multiple axles are installed in left chamber Bearing sleeve supports inner press roll on central shaft, inner press roll is rotated around central shaft；It is fixed with tube wall in right chamber Gear ring, planet axis be fixed on fixation in right chamber every end, planetary gear matched somebody with somebody by needle bearing or slip cap with planet axis Close, planetary gear can be rotated freely in planet axis, and the central gear for being fixed on the power shaft end of motor stretches into planet The centre of gear, central gear is engaged with planetary gear, and planetary gear is engaged with gear ring；Described left chamber and right chamber be it is relative and Speech, the position of left chamber and right chamber can exchange；Manufacture has straight-tooth, tooth on described central gear and planetary periphery Manufacture has straight-tooth on the inner headed face of circle, or, manufacture has the inner circle of helical teeth, gear ring on central gear and planetary periphery Manufacture has helical teeth on face.

Described central shaft creates the axle for being fixed on pillar and supporting inner press roll, and one end of central shaft is fixed on pillar The upper, other end to be stretched into insert in the inner chamber of inner press roll and is fixed in the endoporus of the bearing in the inner chamber of inner press roll.

Described motor creates the dc motor or ac motor that can be rotated and reverse, ac motor Adjustable frequency motor can also be created；One end that motor is fitted without central gear is fixed on pillar, is provided with center Stretch into the inner chamber of inner press roll one end of gear；The supply line of motor is connected with the outlet line of contact starting switch, The supply line of contact starting switch is connected with power supply；Described contact starting switch is arranged on pillar and is fitted without it The position of its part.

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 motor, the use of the line of power supply to motor be directly connected to and without Cross contact starting switch；Gap is left in the upper end of the contact head in the endoporus of rubber spring with the lower end of transmission head, When main story button or reversion button is pressed, can be with the upper end of main story button or the contact head of the reversion corresponding installation of button Transmit head lower end in contact and by conductor wire connect motor supply line；Motor is rotated forward when pressing main story button, is pressed Motor reversion during lower reversion button, motor shuts down during release button；Described rubber spring is manufactured using rubber, system The rubber bodies of tubular type are caused, the function of spring is realized using the deformation return function of rubber.

Described pillar creates and carries weight, the upper end of rotating roller and belt type blackboard and have and there is rotation hole at middle part Support cylinder；

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

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；

The part that wiping is contacted with belt type blackboard outside described fixation is manufactured using soft fiber or sponge, creates and can wipe Fall the chalk trace eraser on blackboard；The part that the fixed outer back side wiped and two ends are fixed on pillar uses hard material system Make；When rotating roller drives belt type blackboard to rotate, inner press roll withstands on the inside one side of belt type blackboard and makes belt type blackboard convex Go out, it is fixed outer wipe can be on erasing blackboard writing.

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 starts motor drive central gear rotation Turn, central gear drives planetary gear rotation, planetary gear drives gear ring rotation and drives inner press roll to rotate forward；Inner press roll is just Drive belt type blackboard to be rotated forward in rotating roller during to rotation, after moving a certain distance on belt type blackboard, unclamp contact and open Disconnecting power supply circuit after the main story button of dynamic switch makes motor shut down, and belt type blackboard stops movement, afterwards, continues black Write on plate or drawn；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 starts motor drive central gear rotation, and central gear drives planetary gear rotation Turn, planetary gear drives gear ring rotation and drives inner press roll to rotate forward；Belt type blackboard is driven when inner press roll is rotated forward in rotation Rotated forward on transfer roller, after moving a certain distance on belt type blackboard, confession is disconnected after unclamping the main story button of contact starting switch Circuit makes motor shut down, and belt type blackboard stops movement, and afterwards, continuation is write or drawn on blackboard；Solve individual Son people high can not partly write the problem for needing to bend over or squat down below blackboard, improve the picture that write on blackboard Comfortableness.

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 starts motor and drives central gear rotation, and central gear drives planetary gear rotation, and planetary gear drives gear ring Rotate and drive inner press roll to rotate forward or backwards；When inner press roll rotates forward or backwards drive belt type blackboard in rotating roller just To or rotate backward, when belt type blackboard rotates forward or backwards in rotating roller, in the one side at the back side for rotating to blackboard When writing is by the position for fixing outer wiping, inner press roll withstands the back side of blackboard in the inside of belt type blackboard（Behind belt type blackboard Simultaneously）The inside writing that stands fast and allow the fixed outer scraping sub-sections wiped to wipe off on the blackboard back side, belt type blackboard is by fixing The part of outer wiping all can be clean by fixed outer wiping erasing；After blackboard is wiped clean, unclamp contact starting switch main story button or Disconnecting power supply circuit after reversion button makes motor shut down, and completes the auto-erasing of the writing on blackboard；In fixed outer wiping When erasing the board, the writing on blackboard is wiped off by the way of striking off, when the writing on blackboard is struck off, the outer erasure of fixation is not free Flow of air would not produce wind, chalk dust to sink naturally and drop in disposable box, make do not have the winged of chalk dust to flutter in classroom.

The simple for structure of described Assembled rotary automatic character-erazing environment friendly blackboard, manufacture and easy to use, collection is automatic wipe with The function of blackboard does not fly the chalk dust flutterred in one during automatic blackboard cleaning, protect the environmentally-friendly sanitary in classroom, and book is made again The standard anyhow write, improves quality of instruction.

Brief description of the drawings

Fig. 1 is the cross section structure diagram of the front view of Assembled rotary automatic character-erazing environment friendly blackboard；

Fig. 2 is that the surface surface structure that has the front view of grid of the belt type blackboard of Assembled rotary automatic character-erazing environment friendly blackboard shows It is intended to；

Fig. 3 is that the surface surface structure that has the rearview of grid of the belt type blackboard of Assembled rotary automatic character-erazing environment friendly blackboard shows It is intended to；

Fig. 4 is that the surface of the belt type blackboard of Assembled rotary automatic character-erazing environment friendly blackboard does not have the surface structure of the front view of grid Schematic diagram；

Fig. 5 is that the surface of the belt type blackboard of Assembled rotary automatic character-erazing environment friendly blackboard does not have the surface structure of the rearview of grid Schematic diagram；

Fig. 6 is the surface structure schematic diagram of the left view of Assembled rotary automatic character-erazing environment friendly blackboard；

Fig. 7 is the cross section structure diagram of the left view of belt type blackboard blackboard part；

Fig. 8 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, motor 11, central gear 12, planetary gear 13, gear ring 14, fixation are every 15, housing 16, reversion Button 17, rotating forward button 18, rubber spring 19, transmission first 20, contact head 21, conductor wire 25.

Specific embodiment

Assembled rotary automatic character-erazing environment friendly blackboard of the present invention includes that belt type blackboard 4, rotating roller 3, inner press roll 8, fixation are outer Wipe 7, pillar 2, heel brace 1, central shaft 9, central gear 12, planetary gear 13, gear ring 14, motor 11, 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；One rotary shaft at the 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 for being arranged on 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 near two pillars 2 The aft section of upper part be fixed with inner press roll 8, the one end in inner press roll 8 is fixed on central shaft 9 by bearing 10, interior The planetary gear 13 of the other end in pressure roller 8 is engaged with the central gear 12 of the power shaft end of motor 11, central shaft 9 and electricity Respectively in the inner chamber at the two ends of inner press roll 8, central shaft 9 and motor 11 are separately fixed at close two pillars 2 to motivation 11 On the pillar 2 of scope corresponding in the aft section of upper part, the two ends of inner press roll 8 hollow parts, the rotation of inner press roll 8 The inside one side of surface and belt type blackboard 4 contact and the belt type blackboard 4 on one side behind inner press roll 8 backward face pressure and make band Formula blackboard 4 protrudes backward；In the outer surface at the back side of belt type blackboard 4, the position corresponding with inner press roll 8 is fixed with fixed outer wiping 7, the two ends of fixed outer wiping 7 are fixed on behind two upper ends of pillar 2 by support；Belt type blackboard 4 is arranged on internal pressure On roller 8 and rotation roller group, the one side that outer wiping 7 is fixed in outer surface is the front of blackboard, and there is the one side of fixed outer wiping 7 outer surface It is the back side of blackboard, the back side is installed towards the locular wall in classroom, just installed facing to student.

Described inner press roll 8 creates the pressure roller of hollow pipe-type, placed in the middle in the inner chamber of hollow pipe-type pressure roller or deflection One end is fixed with to be fixed every 15, and fixation is divided into left chamber and right chamber every the inner chamber of 15 inner press rolls 8；Be provided with left chamber it is single or Multiple bearings 10 are sleeved on central shaft 9 to support inner press roll 8, inner press roll 8 is rotated around central shaft 9；In right chamber Gear ring 14 is fixed with tube wall, planet axis are fixed on the fixation in right chamber every 15 end, and planetary gear 13 passes through needle bearing 10 or slip cap and planet axis coordinate, planetary gear 13 can be rotated freely in planet axis, be fixed on the power of motor 11 The central gear 12 of shaft end stretches into the centre of planetary gear 13, and central gear 12 is engaged with planetary gear 13, planetary gear 13 Engaged with gear ring 14；Described left chamber and right chamber is that comparatively, the position of left chamber and right chamber can exchange；Described center Manufacture has to be manufactured on straight-tooth, the inner headed face of gear ring 14 on the periphery of gear 12 and planetary gear 13 straight-tooth, or, centre tooth Manufacture has to be manufactured on helical teeth, the inner headed face of gear ring 14 on the periphery of wheel 12 and planetary gear 13 helical teeth.

Described central shaft 9 creates the axle for being fixed on pillar 2 and supporting inner press roll 8, and one end of central shaft 9 is fixed on On pillar 2, the other end to stretch into insert in the inner chamber of inner press roll 8 and is fixed in the endoporus of the bearing 10 in the inner chamber of inner press roll 8.

Described motor 11 creates the dc motor 11 or ac motor 11 that can be rotated and reverse, exchange Motor 11 can also create adjustable frequency motor 11；One end that motor 11 is fitted without central gear 12 is fixed on pillar On 2, it is provided with the inner chamber that inner press roll 8 is stretched into one end of central gear 12；The supply line of motor 11 starts with contact The outlet line connection of switch, the supply line of contact starting switch is connected with power supply；Described contact starting switch peace The position of other parts is fitted without on pillar 2.

Described contact starting switch creates rubber spring 19, contact head 21, transmits first 20, conductor wire 25, just Turn button 18, reversion button 17 and the several parts of housing 16；Have via through housing 16 at the top of housing 16, main story button and Invert button 17 upper end diameter it is small partially pass through via, the upper end of transmission first 20 is separately fixed at main story button and reversion is pressed The lower end of button 17；Bottom in housing 16 is provided with two contact heads 21, and contact head is partly enclosed within below rubber spring 19 Partly be enclosed within above 21 internal diameter is small on part, above rubber spring 19 internal diameter of transmission first 20 it is small below on part； Below the diameter of contact head 21 is big part and first 20 diameter of transmission it is big above part connect conductor wire 25 respectively, contact starts The electric current input conductor wire 25 of connection in switch be connected with the live wire of power supply, electric current exports the entrance of conductor wire 25 and motor 11 Live wire is connected, the line of power supply to motor 11 using be directly connected to and without contact starting switch；Installed in rubber bullet Gap is left in the upper end of the contact head 21 in the endoporus of spring 19 with the lower end of transmission first 20, is pressing main story button or reversion button When 17, the upper end of the contact head 21 of installation corresponding with main story button or reversion button 17 can be with the lower end in contact of transmission first 20 And pass through the supply line that conductor wire 25 connects motor 11；Motor 11 is rotated forward when pressing main story button, presses reversion button Motor 11 is inverted when 17, and motor 11 shuts down during release button；Described rubber spring 19 is manufactured using rubber, manufacture Rubber bodies as tubular type, the function of spring is realized using the deformation return function of rubber.

Described pillar 2 creates and carries weight, the upper end of rotating roller 3 and belt type blackboard 4 and have and there is rotation at middle part The support cylinder in hole；

Described heel brace 1 creates 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 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；

7 parts contacted with belt type blackboard 4 are wiped outside described fixation using soft fiber or sponge manufactures, creating can Wipe the chalk trace eraser on blackboard；The part that the fixed outer back side for wiping 7 and two ends are fixed on pillar 2 uses hard material Manufacture；When rotating roller 3 drives belt type blackboard 4 to rotate, inner press roll 8 withstands on the inside one side of belt type blackboard 4 and makes belt type blackboard 4 It is outwardly, it is fixed outer to wipe 7 writings that be on erasing blackboard.

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 7 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 7 is wiped totally when erasing the board, the one side for erasing the board that 7 are wiped outside described fixation can also Blade insert is created using elastomeric material.

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.

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 starts the drive central gear of motor 11 12 rotations, central gear 12 drives planetary gear 13 to rotate, and planetary gear 13 drives gear ring 14 to rotate and drives inner press roll 8 positive Rotation；Drive belt type blackboard 4 to be rotated forward in rotating roller 3 when inner press roll 8 is rotated forward, moved on belt type blackboard 4 it is certain away from From rear, to unclamp and disconnect power supply circuit after the main story button of contact starting switch and motor 11 is shut down, belt type blackboard 4 stops Only move, afterwards, continuation is write or drawn on blackboard；Solve height people not high can not above blackboard partial write The problem of word.

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 startup motor 11 for pressing contact starting switch drives central gear 12 to rotate, and central gear 12 drives planet Gear 13 rotates, and planetary gear 13 drives gear ring 14 to rotate and drive inner press roll 8 to rotate forward；Band when inner press roll 8 is rotated forward Dynamic belt type blackboard 4 is rotated forward in rotating roller 3, after moving a certain distance on belt type blackboard 4, unclamps contact starting switch Power supply circuit is disconnected after main story button makes motor 11 shut down, and belt type blackboard 4 stops movement, afterwards, continues on blackboard Write or draw；Solving tall people and can not partly being write below blackboard needs the problem bending over or squat down, carries The comfortableness of the picture that write on blackboard high.

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 17 starts motor 11 and drives central gear 12 to rotate, and central gear 12 drives planetary gear 13 to rotate, planet tooth Wheel 13 drives gear ring 14 to rotate and drive 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 When writing in the one side at the back side of blackboard passes through the position of fixed outer wiping 7, inner press roll withstands blackboard in the inside of belt type blackboard 4 The back side（One side behind belt type blackboard 4）The inside stand fast and allow fixed outer 7 scraping sub-sections wiped to wipe off on the blackboard back side Writing, belt type blackboard 4 by it is fixed outer wipe 7 part all can outer to wipe 7 erasings clean by fixed；After blackboard is wiped clean, unclamp Disconnecting power supply circuit after the main story button or reversion button 17 of contact starting switch makes motor 11 shut down, and completes blackboard On writing auto-erasing；When fixed outer wiping 7 erases the board, the writing on blackboard is wiped off by the way of striking off, striking off During writing on blackboard, fixed outer wiping at 7 does not have air flow that wind, chalk dust would not be produced to sink naturally and drop to disposable box In, make there is no the winged of chalk dust to flutter in classroom.

Claims (2)

1. a kind of Assembled rotary automatic character-erazing environment friendly blackboard, including belt type blackboard, rotating roller, inner press roll, fixed outer wiping, branch Post, heel brace, central shaft, central gear, planetary gear, gear ring, motor, 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；One rotary shaft at 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 parts of close two pillars are fixed with inner press roll, in inner press roll One end the planetary gear of the other end on center shaft, in inner press roll and the power shaft end of motor are fixed by bearing Respectively in the inner chamber at the two ends of inner press roll, central shaft and motor are fixed respectively for central gear engagement, central shaft and motor The pillar of scope corresponding to hollow parts in two aft sections of the upper part of pillar, inner press roll two ends On, the surface of revolution of inner press roll contacted with the inside one side of belt type blackboard and the belt type blackboard on one side behind inner press roll to Press below and belt type blackboard is protruded backward；In the outer surface at the back side of belt type blackboard, the position corresponding with inner press roll is fixed with Fixed outer wiping, the fixed outer two ends wiped are fixed on behind two upper ends of pillar by support；Belt type blackboard is arranged on On inner press roll and rotation roller group, the front that the outer one side wiped is blackboard is fixed in outer surface, and there is the one of fixed outer wiping outer surface Face is the back side of blackboard, and the back side is installed towards the locular wall in classroom, just installed facing to student；

Described inner press roll creates the pressure roller of hollow pipe-type, and placed in the middle in the inner chamber of hollow pipe-type pressure roller or deflection one end is consolidated Surely have fixed every fixed every the inner chamber of inner press roll is divided into left chamber and right chamber；Single or multiple bearing holder (housing, cover)s are installed in left chamber Inner press roll is supported on central shaft, inner press roll is rotated around central shaft；Gear ring is fixed with tube wall in right chamber, Planet axis be fixed on fixation in right chamber every end, planetary gear coordinated by needle bearing or slip cap with planet axis, OK Star gear can be rotated freely in planet axis, be fixed on the power shaft end of motor central gear stretch into it is planetary Centre, central gear is engaged with planetary gear, and planetary gear is engaged with gear ring；Described left chamber and right chamber be comparatively, The position of left chamber and right chamber can exchange；Manufacture has straight-tooth, gear ring on described central gear and planetary periphery Manufacture has straight-tooth on inner headed face, or, there be on the inner headed face of helical teeth, gear ring manufacture on central gear and planetary periphery Manufacture has helical teeth；

Described central shaft creates the axle for being fixed on pillar and supporting inner press roll, one end of central shaft is fixed on pillar, The other end to be stretched into insert in the inner chamber of inner press roll and is fixed in the endoporus of the bearing in the inner chamber of inner press roll；

Described motor creates the dc motor or ac motor that can be rotated and reverse, and ac motor can also Enough create adjustable frequency motor；One end that motor is fitted without central gear is fixed on pillar, is provided with central gear One end stretch into the inner chamber of inner press roll；The supply line of motor is connected with the outlet line of contact starting switch, contact The supply line of formula starting switch is connected with power supply；Described contact starting switch is arranged on pillar and is fitted without other portions The position of part；

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 motor, the use of the line of power supply to motor be directly connected to and without contact Formula starting switch；Gap is left in the upper end of the contact head in the endoporus of rubber spring with the lower end of transmission head, is pressing When 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 transmission head Lower end in contact and by conductor wire connect motor supply line；Motor is rotated forward when pressing main story button, presses reversion Motor reversion during button, motor shuts down during release button；Described rubber spring is manufactured using rubber, is created The rubber bodies of tubular type, the function of spring is realized using the deformation return function of rubber；

Described pillar creates and carries weight, the upper end of rotating roller and belt type blackboard and have and there is the support of rotation hole at middle part Cylinder；

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

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；

The part that wiping is contacted with belt type blackboard outside described fixation is manufactured using soft fiber or sponge, creates and can wipe Fall the chalk trace eraser on blackboard；The part that the fixed outer back side wiped and two ends are fixed on pillar uses hard material system Make；When rotating roller drives belt type blackboard to rotate, inner press roll withstands on the inside one side of belt type blackboard and makes belt type blackboard convex Go out, it is fixed outer wipe can be on erasing blackboard writing；

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, the main story button for pressing contact starting switch starts motor drive central gear rotation, in Heart gear driven planetary gear rotates, and planetary gear drives gear ring rotation and drives inner press roll to rotate forward；The positive rotation of inner press roll Drive belt type blackboard to be rotated forward in rotating roller when turning, after moving a certain distance on belt type blackboard, unclamp contact startup and open Power supply circuit is disconnected after the main story button of pass makes motor 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, presses The main story button of contact starting switch starts motor and drives central gear rotation, and central gear drives planetary gear rotation, Planetary gear drives gear ring rotation and drives inner press roll to rotate forward；Belt type blackboard is driven when inner press roll is rotated forward in rotating roller On rotate forward, on belt type blackboard move a certain distance after, unclamp contact starting switch main story button after disconnect power supply electricity Road makes motor 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；

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 starts motor and drives central gear rotation, and central gear drives planetary gear rotation, and planetary gear drives gear ring rotation 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 in the one side at the back side for rotating to blackboard During the position wiped by fixed outer, inner press roll withstands in the inside of belt type blackboard and stood fast inside the back side of blackboard and allow fixation The scraping sub-sections of outer wiping wipe the writing on the blackboard back side off, and belt type blackboard can all be fixed outer wiping by the fixed outer part wiped Except clean；Disconnecting power supply circuit after blackboard is wiped clean, after the main story button or reversion button that unclamp contact starting switch makes electricity Motivation shuts down, and completes the auto-erasing of the writing on blackboard；When outer erasing the board is fixed, wiped off by the way of striking off Writing on blackboard, when the writing on blackboard is struck off, the outer erasure of fixation does not have air flow to produce wind, and chalk dust is certainly So sink and drop in disposable box, make there is no the winged of chalk dust to flutter in classroom.

2. Assembled rotary automatic character-erazing environment friendly blackboard according to claim 1, it is characterised in that：In order that fixed outer wiping Wiped when erasing the board totally, the one side for erasing the board wiped outside described fixation can also create rubber using elastomeric material Scraping blade.