CN1966282A - Turn-over type blackboard - Google Patents
Turn-over type blackboard Download PDFInfo
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- CN1966282A CN1966282A CN 200610104966 CN200610104966A CN1966282A CN 1966282 A CN1966282 A CN 1966282A CN 200610104966 CN200610104966 CN 200610104966 CN 200610104966 A CN200610104966 A CN 200610104966A CN 1966282 A CN1966282 A CN 1966282A
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- 230000007306 turnover Effects 0.000 title claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims description 63
- 230000006835 compression Effects 0.000 claims description 48
- 238000007906 compression Methods 0.000 claims description 48
- 206010017577 Gait disturbance Diseases 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 23
- 239000000428 dust Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000005056 compaction Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000000386 athletic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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Abstract
The invention relates to a turnover black board which can avoid hand operation and contain content on black board, wherein it comprises panel and transmitter; said panel is formed by several same plates; the upper and lower edges of panel have upper and lower sliding tracks with drawing devices; the lower track has turnover element; two sides of each plate have wedges and grooves; the plates are combined with wedges and grooves; the upper and lower ends of each plate are connected to connecting rods and bearing, to connect the drawing devices and turnover elements; the transmitter comprises motor and the differential box connected to its axle; two output axles of differential box via transmission rod and chain wheel are connected to drawing devices and turnover element. The invention can automatically erase or store the word face.
Description
Technical field
The present invention relates to a kind of teaching aid, particularly a kind of turn-over type blackboard.
Background technology
For a long time, the teaching that blackboard adds chalk become China just, a kind of universal pattern in the secondary education, the dust pollution that it brings is obvious to all to the health hazard of Faculty and Students.
Existing teaching mainly contains three kinds with blackboard, and a kind of is the individual plates of fixing, and one side is used, and uses up to wipe out the chalk person's handwriting and can reuse, as general Arc shape blackboard and plane blackboard for education etc.Another kind is a blackboard for education of having expanded usable floor area, as some liftable up and down or about combined blackboard movably.Also having a kind of is the softpanel that drives with roller, certain automatic Wiping mechanism is arranged, reusable edible.Preceding two kinds of boards of education all will can reuse after teacher or student are with chalk person's handwriting wiped clean, because wiping process is exposed in the classroom, the dust pollution of Chan Shenging is to teachers and students therefrom, and especially teacher healthy causes serious harm.A kind of because the circulation distance in back is far away, upgrades used chronic of plate face, and just is difficult to give for change institute's content written last time after upgrading, so this series products does not obtain large-area promoting the use of.
Summary of the invention
The present invention overcomes existing existing wiping difficulty of blackboard for education and the chalk dust pollution harm healthy to the teacher in order fundamentally to improve teaching environment, leak and pollute and turnover plate type splicing blackboard that the blackboard content can be preserved and a kind of manpower-free's wiping is provided and can have stopped dust, middle and primary schools' teaching that the amount of being specially adapted to is big and wide is used.
For reaching above purpose, the present invention takes following technical scheme to be achieved:
A kind of turn-over type blackboard comprises panel and transmission mechanism, and described panel is spliced to form by a plurality of laths that size, shape equate; This upper and lower limit of plate face is respectively arranged with upper and lower slideway; Be provided with tension and compression mechanism in the upper and lower slideway, also be provided with switching mechanism in the glide path; Described each lath both sides are respectively equipped with wedge, groove, the wedging that is spliced into wedge and groove between the lath, each lath upper and lower side is equipped with connecting rod and bearing, and respectively with sliding way in tension and compression mechanism be connected with tension and compression mechanism and switching mechanism in the glide path, described transmission mechanism comprises motor and the differential box that is connected with it, and two output shafts of differential box are connected tension and compression mechanism and switching mechanism by transmission rod respectively with drive sprocket.
In the such scheme, described tension and compression mechanism includes two groups of slide block groups that the identical a plurality of slide blocks of length constitute, every group of slide block quantity equate with the lath number, first is the tension and compression piece, the centre of each slide block is provided with the bearing holder (housing, cover) of an installing connecting rods bearing, the two ends of slide block are respectively equipped with buckle ear and clasp, between the slide block by the connection that interlocks successively of clasp, buckle ear, two groups of slide blocks be contained in respectively sliding way and glide path the tension and compression slideway in, the width of clasp deducts that the ear of buckle ear is thick to draw the maximal clearance amount of separating when loosing for lath; Described tension and compression piece is made of half gear and two tooth bar engagement assemblings, the tooth bar of two groups of tension and compression pieces is installed in respectively in the upper and lower tension and compression piece slideway, half gear of two groups of tension and compression pieces is interconnected by one and half gear shafts, and half gear in the wherein drop-down briquetting slideway connects the transmission rod of differential box.
Described switching mechanism comprises a plurality of flip components that are arranged in the glide path upset slideway, the quantity of flip component equates with the lath number, the lower end of each flip component is provided with two coaxial sprockets, and the base of stretching out glide path, the flip component upper end is for having the flip body of notch, the shape of a connecting rod end portion matches below described notch and the lath, and kiss connects mutually, alternately connected by chain gear transmission about it by chain between each flip component, the sprocket wheel of first flip component is connected with chain with the drive sprocket of differential box.
Above-mentioned turn-over type blackboard also can be provided with Wiping mechanism at its back side, it comprises upper and lower two leading screws, be installed in the parallel shelf that is provided with upper and lower cover on the leading screw and be installed in two roller brush bodies between upper and lower the cover, is respectively arranged with cloth brush cover and hairbrush cover on described two roller brush bodies; Two leading screws end in the same way connects the upper and lower bevel gear set that is arranged on the blackboard back side one side respectively, and wherein the level of following bevel gear set connects with the axle of another one motor to bevel gear.
The level of described Wiping mechanism is provided with an initiatively driven stud wheel of stud wheel and and its engagement to bevel gear is also coaxial, this driven stud wheel is connected with roller brush body rotation driving mechanism in the undercarriage cover that is arranged on parallel shelf, this driving mechanism comprise one pass parallel shelf undercarriage cover and with the parallel feed rod of following leading screw, one end of this feed rod connects driven stud wheel, this feed rod penetrates parallel shelf undercarriage cover part and is provided with the gear train transmission mechanism and connects two and trip, and tripping for these two connects the bar of fixedly stumbling of two roller brush bodies respectively.
The invention has the beneficial effects as follows that the lath of forming panel can be drawn diffusing under the drive of tension and compression mechanism, when per two face mutually draw between the lath loose after, tension and compression mechanism quits work; This moment, switching mechanism was started working, drive all laths together the vertical axes of winding board bar self turn over turnback, after upset finishes, switching mechanism quits work, the mechanism of tension and compression simultaneously starts working again, is about to lath and compresses, because the lath both sides are respectively equipped with wedge, groove, adjacent slat in the compaction process is because the cooperation of wedge groove makes whole plate mask that very high planarization and tightness be arranged.Like this, blackboard is realized upset, promptly has the front of word to be turned to the back side, can be wiped, and also can be preserved; Clean no word reverse side is turned to the front can be continued to use for the teacher.After whole plate face upset splicing is finished, the Wiping mechanism that is located at the blackboard back side can have the wiping work at the word back side as required under the driving of another motor, one of the wiping roller of Wiping mechanism is the cloth brush roll, one is brush roll, two rollers can rotate under the driving mechanism of parallel shelf bottom drives, simultaneously under the drive of two leading screws up and down, parallel shelf and brush roll together can be on the plate face move left and right, Wiping mechanism just can be finished whole blackboard wiping process automatically at the back side of blackboard like this, does not use when wiping process does not influence the front.Because the plate mask has very high sealing, the dust that Wiping mechanism wiped out can be in the sedimentation voluntarily of the blackboard back side, therefore dust is simultaneously polluted to the classroom and to influence teachers and students healthy,
Description of drawings
Fig. 1 is a schematic appearance of the present invention, and wherein Fig. 1 a is the front view of blackboard, and Fig. 1 b is the side view of blackboard.
The structural representation that Fig. 2 draws back for blackboard of the present invention, wherein Fig. 2 c is a front view, Fig. 2 d is the cutaway view of the length direction of sliding way 3.
Fig. 3 is the structure chart of Fig. 2 middle plate strip 1, and wherein Fig. 3 e is individual plates sliver transvers section figure, and Fig. 3 f is a monolithic lath front view.
Fig. 4 is the structure chart of glide path 7 among Fig. 1, and wherein Fig. 4 g is the cross-sectional view of monolithic lath place glide path, and Fig. 4 h is a glide path shape of cross section schematic diagram.
Fig. 5 is the structure chart of slide block 41 among Fig. 2, and wherein Fig. 5 j is the slide block connection diagram, and Fig. 5 k is single slide block structure figure, and Fig. 5 m is single slide block side view.
Fig. 6 is the structure chart of the tension and compression piece 49 among Fig. 2, and wherein Fig. 6 o is the fast connection diagram of tension and compression up and down, and Fig. 6 p is the fast vertical views of tension and compression.
Fig. 7 is the structure chart of flip component 44 among Fig. 2, and Fig. 7 x is its front view, and Fig. 7 y is its side view.
Fig. 8 is the structural representation of the Wiping mechanism 70 among Fig. 1.
Fig. 9 is the assembling schematic diagram of parallel shelf 10 and roller brush body 34 among Fig. 8.
Figure 10 is the cut-away view that undercarriage overlaps on the parallel shelf among Fig. 9, and wherein Figure 10 a, 10b put on the shelf to overlap 28 structural representation, and Figure 10 c, 10d are the structural representations of undercarriage cover 20.
Figure 11 is the internal structure schematic diagram of the differential box 47 among Fig. 2.
Figure 12 is the drive unit schematic diagram of the roller brush body 34 of another kind of parallel shelf, and wherein Figure 12 U is the assembling schematic diagram of parallel shelf 10 and roller brush body 34, and Figure 12 W is the cutaway view of its undercarriage cover.
Figure 13 is the characteristics of motion schematic diagram of Figure 11 differential box transmission rod and sprocket wheel 45, and wherein Figure 13 v is a tension and compression motion of mechanism rule, and Figure 13 t is the characteristics of motion of switching mechanism.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
As shown in Figure 1 and Figure 2, a kind of turn-over type blackboard, have the certain thickness a plurality of laths 1 of having of wedge groove 5 by both sides and constitute whole front panel, the upper and lower limit of panel respectively is provided with up and down slideway 3,7, is provided with tension and compression mechanism in the upper and lower slideway 7, and glide path 7 also is provided with switching mechanism, lath 1 can be drawn diffusing under the drive of tension and compression mechanism, between per two laths 1 in back a certain amount of gap is arranged all when drawing to loose, this gap can guarantee that lath 1 when overturning, can not bump between the lath that faces mutually; Lath 1 is drawn to loose behind certain interval each other, and tension and compression mechanism quits work; This moment, switching mechanism was started working, drive all laths together the vertical axes Z of winding board bar self turn over turnback, after upset finishes, switching mechanism quits work, the mechanism of tension and compression simultaneously starts working again, is about to lath 1 and compresses, because lath 1 both sides are respectively equipped with wedge, groove 5, adjacent slat 1 in the compaction process is because the cooperation of wedge groove makes whole plate mask that very high planarization and tightness be arranged.Can be provided with Wiping mechanism 70 at the blackboard back side, can after the upset of plate face, writing be wiped automatically.
The cover plate 2 of Fig. 1 drives by flicking spring, and when lath 1 upset, lath 1 enough pushes it open for its power.Its effect is that blackboard front two cover plates 2 up and down can make whole plate face more complete, increases the aesthetic property of whole blackboard.The effect that is located at the two cover plates 2 at the back side is to prevent that dust from falling into glide path 7 the insides, makes each component movement more flexible.The right of blackboard is provided with side cover plate 4, and its effect is to make whole plate face more attractive in appearance equally, and it can also prevent leaking of inner dust simultaneously.When lath 1 is drawn when loosing, it together is removed, and side cover plate 4 is located at the outside of control cabinet 6, in the motion of the outside of control cabinet 6.Control cabinet 6 is present positions of devices such as motor 48,39, differential box 47, and more the brushing of roll change brush and maintenance etc. can be finished in control cabinet 6.The blackboard left side can be provided with side frame 8, when the such blackboard of two of needs, need only take off side frame 8, another piece blackboard is set up in the butt joint of side frame 8 places get final product.
As Fig. 3～shown in Figure 7, lath 1 two ends are equipped with respectively on 42, two connecting rods of upper and lower two connecting rods and are respectively equipped with bearing 40, simultaneously, below the terminal part 43 of a connecting rod milled out two planes, the notch of the flip body 62 among its shape and Fig. 7 matches.The connecting-rod bearing 40 is embedded in the bearing holder (housing, cover) 55 on Fig. 5 slide block 41, simultaneously between the slide block 41 by clasp 54, buckle ear 53 connection that interlocks successively, under the drive of Fig. 6 tension and compression piece 49, can realize the block-by-block motion, make between per two slide blocks 41 and draw back certain clearance H, this gap is in order to guarantee lath 1 mutually noninterfere between per two when overturning, tension and compression piece 49 is by the engagement assembling of half gear 50 and two blocks of tooth bars 56, when half gear 50 rotates, can drive tooth bar 56 and realize side-to-side movement, tooth bar 56 drives 49 side-to-side movements of tension and compression piece again, two blocks of tooth bars 56 are installed on Fig. 2, in the drop-down briquetting slideway 52, half gear 50 is interconnected by half gear shaft 51 and realizes being synchronized with the movement, and is connected the differential box 47 of Figure 11 by transmission rod 57.All slide blocks 41 be contained in sliding way 3 and glide path 7 tension and compression slideway 64 in.Can drive each slide block 41 motions one by one when 49 motions of tension and compression piece, the athletic meeting of slide block 41 drives bearing 40 and drives lath 1 rectilinear motion simultaneously.
The slide block 41 that above-mentioned length is identical, tension and compression piece 49 and half gear 50, half gear shaft 51 have constituted tension and compression of the present invention mechanism, the centre of slide block 41 have one can load rod bearing 40 bearing holder (housing, cover) 55, but there is the coupling part of the relative displacement that two slide blocks can be connected together at the two ends of slide block 41, be buckle ear 53 and clasp 54, its maximum displacement just lath 1 draw when loosing should guarantee the gap value of mutually noninterfere, so the gap H of the maximum of 41 of the slide blocks width D that should equal clasp 54 deducts the thick S of ear of buckle ear.
First slide block is tension and compression piece 49 shown in Figure 6, respectively be provided with one in the tension and compression piece slideway 52 in the up and down slideway 3,7, all slide blocks 41 about this tension and compression piece 49 drives in the tension and compression slideway 64 are realized that drawing of laths 1 is diffusing and are compressed motion, its structure and type of drive front are described in detail, repeat no more herein.
Switching mechanism comprises the flip component 44 that is arranged in the glide path 7 upset slideways 65, the lower end of this flip component 44 is provided with two coaxial sprockets 45, and stretch out and descend to slide into 7 base, flip component 44 upper ends are the flip body 62 that has notch 63, lower sprocket 45 is in transmission connection on it by passing through of replacing of chain 46 between each flip component 44, the sprocket wheel of first flip component 44 is connected with the sprocket wheel 45 usefulness chains of Figure 11 differential box 47, thereby can realize that all rollovers member 44 works 180 degree rotate.
Shown in Fig. 8～10, the blackboard Wiping mechanism is arranged on the back side of blackboard, comprise two leading screws 12, be installed in parallel shelf 10 and the roller brush body 9 between the parallel shelf cover up and down on the leading screw, 11, two leading screws 12 provide power by another one motor 39, motor 39 passes to leading screw 12 1 running power synchronously by two couples, the 90 degree meshed bevel gears 13 that are arranged on the blackboard back side one side, vertically between bevel gear, connecting of two pairs of bevel gears 13 by major axis 68, also available sprocket wheel chain cooperates realizes being synchronized with the movement of leading screw 12, wherein a leading screw 12 below is arranged with a feed rod 15 in parallel, this feed rod 15 is driven by the stud wheel group 14 of the level that is arranged on following bevel gear set to the bevel gear connecting shaft, two roller brush bodies 9, in 11, one can make cloth brush cover 33, another can make hairbrush cover 37, can more effectively wipe the chalk person's handwriting like this.
Two roller brush bodies, 34 upper and lower end parts are the stumble bar 31 and the bar 35 of fixedly stumbling of the activity of being equipped with respectively, stumble and be equipped with the nail 30 of stumbling on the bar 31,35, activity is stumbled and spring 32 is housed under the bar 31, can make stumble bar 31 elongations and compression, trip accordingly on 18 by stumble put on the shelf cover 28 and undercarriage cover 20 that bar 31 flexible can be contained in roller brush body 34 parallel shelf 10 of activity, at this moment, the nail 30 of stumbling of stumbling on the bar just inserts in the grooves 17 of stumbling of tripping, and rotates thereby roller brush body 34 can overlap 20 18 the driving lower edge blackboard horizontal direction self of initiatively tripping at undercarriage.
Connect two gears of 18 of initiatively tripping in Figure 10 undercarriage cover 20 and be 18 the rotation that realizes initiatively tripping of driving gear 16 and driven gear 19, two gears engaged; Driving gear 16 lower ends are provided with horizontal bevel gear 26,24 one-tenth 90 degree engagements of itself and the bevel gear that is arranged on 23,25 of bearing bracket stands, feed rod 15 passes from the feed rod inlet 21 and the bearing bracket stand 23,25 of undercarriage cover 20, and with bevel gear 24 coaxial being slidingly connected.The cover of putting on the shelf is provided with two bearings 27 in 28 and connects two driven tripping and 18 it is initiatively tripped with two of undercarriage cover 20 18 rotate synchronously.Upper and lower cover 28,20 connected by pole 38, and be respectively equipped with feed screw nut 29,22, when rotating, leading screw 12 can drive upper and lower cover 28,20 along the synchronous move left and right of blackboard horizontal direction, and drive moving horizontally and self rotation of two roller brush bodies 34, realize that the splicing blackboard is had the automatic wiping of the full plate face in the word back side.
As shown in figure 11, draw diffusing, to overturn, compress finishing of these three actions be to provide power by same power source, this power source can be AC and DC motor 48, its rotating shaft is connected with the scroll bar 61 of differential box 47 and by turbine 59 speed drop is got off, drive by turbine 59 again and be located at the two group partial gear groups 58,60 of turbine about in the of 59, make two groups of partial gear groups provide the needed rotation that certain rule is arranged.Partial gear group 58 provides power for tension and compression mechanism by transmission rod 57; Partial gear group 60 provides upset power by sprocket wheel 45 to switching mechanism, and controlling organization can be by electronic circuit control.
As shown in figure 12, trip 18 driving of undercarriage cover 20 can also replace above-mentioned bevel gear 24,26 by a sprocket wheel 66 is installed in driving gear 16 lower ends, with arranging in the sprocket wheel 66 same planes that chain 67 replaces feed rod 15 and stud wheel 14, when leading screw 12 promotion Wiping mechanisms move, because the engagement of sprocket wheel chain, sprocket wheel 66 has a rotation in translation, so just can realize the rotation of roller brush body 34.
As shown in figure 13, transmission rule of the present invention is: when tension and compression mechanism realizes drawing diffusing action, rotate through making transmission rod 57 after the partial gear engagement, sprocket wheel 45 does not then move.After drawing the action of loosing to finish, transmission rod 57 stops operating, and sprocket wheel 45 begins to rotate, and after sprocket wheel 45 rotated 180 degree, lath 1 had been finished rotary movement.After rotary movement was finished, sprocket wheel 45 stopped operating, and transmission rod 57 begins again to rotate, and realizes compressing action.Promptly finished a circulation when compressing action after finishing, draw diffusing, overturn, compress action successively substep finish.Partial gear group 58,60 is motion simultaneously under the drive of worm gear 59, and the motion that differential box is exported is the motion of transmission rod 57 and the motion of sprocket wheel 45.So the characteristics of motion that differential box 47 is provided is the characteristics of motion of transmission rod 57 and sprocket wheel 45 just.
Whole blackboard can only be finished upset, if the content after the i.e. upset is wanted usefulness again, can not drive the action of Wiping mechanism after upset, and then upset goes back to get final product.
Blackboard of the present invention is not limited to above embodiment, also can dust exhaust apparatus be installed in parallel shelf 10 back, so just can remove dust more completely; Two whole fast such blackboards about the present invention also can be divided into, the teacher can use the blackboard separated into two parts.
Claims (5)
1. a turn-over type blackboard comprises panel and transmission mechanism, it is characterized in that, described panel is spliced to form by a plurality of laths that size, shape equate; The upper and lower limit of this panel is respectively arranged with upper and lower slideway; Be provided with tension and compression mechanism in the upper and lower slideway, also be provided with switching mechanism in the glide path; Described each lath both sides are respectively equipped with wedge, groove, the wedging that is spliced into wedge and groove between the lath, each lath upper and lower side is equipped with connecting rod and bearing, and respectively with sliding way in tension and compression mechanism be connected with tension and compression mechanism and switching mechanism in the glide path, described transmission mechanism comprises motor and the differential box that is connected with it, and two output shafts of differential box are connected tension and compression mechanism and switching mechanism by transmission rod respectively with drive sprocket.
2. turn-over type blackboard according to claim 1, it is characterized in that, described tension and compression mechanism includes two groups of slide block groups that the identical a plurality of slide blocks of length constitute, the quantity of every group of slide block equates with the lath number, first is the tension and compression piece, the centre of each slide block is provided with the bearing holder (housing, cover) of an installing connecting rods bearing, the two ends of slide block are respectively equipped with buckle ear and clasp, between the slide block by clasp, the buckle ear connection that interlocks successively, two groups of slide blocks be installed in respectively sliding way and glide path the tension and compression slideway in, the width of clasp deducts that the ear of buckle ear is thick to draw the maximum displacement that separates when loosing for lath; Described tension and compression piece is by one and half gears and two tooth bar engagement assemblings, the tooth bar of two groups of tension and compression pieces is installed in respectively in the upper and lower tension and compression piece slideway, half gear of every group of tension and compression piece is interconnected by one and half gear shafts, and half gear in the wherein drop-down briquetting slideway connects the transmission rod of differential box.
3. turn-over type blackboard according to claim 2, it is characterized in that, described switching mechanism comprises a plurality of flip components that are arranged in the glide path upset slideway, the quantity of flip component equates with the lath number, the lower end of each flip component is provided with two coaxial sprockets, and the base of stretching out glide path, the flip component upper end is for having the flip body of notch, the shape of a connecting rod end portion matches below described notch and the lath, and kiss connects mutually, alternately connected by chain gear transmission about it by chain between each flip component, the sprocket wheel of first flip component is connected with chain with the drive sprocket of differential box.
4. according to the described turn-over type blackboard of one of claim 1～3, it is characterized in that, its plate face also is provided with Wiping mechanism behind, this Wiping mechanism comprises upper and lower two leading screws, be installed in the parallel shelf that is provided with upper and lower cover on the leading screw and be installed in two roller brush bodies between upper and lower the cover, is respectively arranged with cloth brush cover and hairbrush cover on described two roller brush bodies; Two leading screws end in the same way connects the upper and lower bevel gear set that is arranged on the blackboard back side one side respectively, and wherein the level of following bevel gear set connects with the axle of another one motor to bevel gear.
5. turn-over type blackboard according to claim 4, it is characterized in that, described level is provided with an initiatively driven stud wheel of stud wheel and and its engagement to bevel gear is also coaxial, this driven stud wheel is connected with roller brush body rotation driving mechanism in the undercarriage cover that is arranged on parallel shelf, this driving mechanism comprises that is passed a parallel shelf undercarriage cover, and with the parallel feed rod of following leading screw, one end of this feed rod connects driven stud wheel, this feed rod penetrates parallel shelf undercarriage cover part and is provided with the gear train transmission mechanism and connects two and trip, and tripping for these two connects the bar of fixedly stumbling of two roller brush bodies respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101049665A CN100448697C (en) | 2006-11-24 | 2006-11-24 | Turn-over type blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101049665A CN100448697C (en) | 2006-11-24 | 2006-11-24 | Turn-over type blackboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1966282A true CN1966282A (en) | 2007-05-23 |
| CN100448697C CN100448697C (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101049665A Active CN100448697C (en) | 2006-11-24 | 2006-11-24 | Turn-over type blackboard |
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| CN (1) | CN100448697C (en) |
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Denomination of invention: A flip board blackboard Effective date of registration: 20231022 Granted publication date: 20090107 Pledgee: Bank of China Limited Yongjia County sub branch Pledgor: Yucai Holding Group Co.,Ltd. Registration number: Y2023330002431 |