CN2651001Y - Free-erasing dustproof blackboard - Google Patents
Free-erasing dustproof blackboard Download PDFInfo
- Publication number
- CN2651001Y CN2651001Y CN 03269960 CN03269960U CN2651001Y CN 2651001 Y CN2651001 Y CN 2651001Y CN 03269960 CN03269960 CN 03269960 CN 03269960 U CN03269960 U CN 03269960U CN 2651001 Y CN2651001 Y CN 2651001Y
- Authority
- CN
- China
- Prior art keywords
- exempting
- endless belt
- frame
- dust
- blackboard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a cleaning-free dustless blackboard. Wherein a motor arranged on a machine frame drives a drive roller to rotate through a speed reducing device, the drive roller and a driven roller are respectively sleeved with a ring-shaped rubber belt, the upper part and the lower part of the machine frame are respectively articulated with an upper guard board and a lower guard board, the inner side of the upper end of the lower guard board is provided with a fiber washer, the fiber washer is jointed on the lower end surface of the ring-shaped rubber belt through a fixed device, and a baffle plate with the sealing safe edge of the two sides of the machine frame seals the two ends of the ring-shaped rubber belt. The motor drives the drive roller to rotate in order to make the ring-shaped rubber belt move when the utility model is used; the fiber washer cleans the chalk character on the ring-shaped rubber belt when the ring-shaped rubber belt filled with the chalk character passes through the lower guard board; the chalk dust cleaned off falls into a dust collecting box under the blackboard and is absorbed away in time. The chalk dust of the blackboard isn't leaked, which reduces the pollution for the teacher and the classroom and relieves the labor intensity of the users.
Description
Technical field
The utility model relates to a kind of erasing dust-free blackboard of exempting from, and belongs to teaching aid.
Background technology
Blackboard is indispensable apparatus in teaching.What available technology adopting was maximum is wooden or plastic blackboard, the also employing cement blackboard that economic backward area has, write with chalk, the defective of its existence is to serve as a teacher when wiping writing on the blackboard letter written with chalk on the blackboard with blackboard eraser, causing chalk dust to wave raises, the teacher inevitably with in the powder ash suction body, had both influenced healthy, the contaminated environment of teacher, again effort, time-consuming.In order to address the above problem, people have thought thousand and one way, such as there being the people to invent dust-sucking eraser, have received certain effect, but chalk dust all can't have been siphoned away; The somebody has invented driven blackboard for this reason, and because of its complex structure, its application is subjected to certain limitation.
Summary of the invention
The purpose of this utility model is to provide a kind of erasing dust-free blackboard of exempting from, and can replace manually wiping automatically the letter written with chalk on the blackboard, and chalk dust can outwards not revealed, and avoids the teacher to suck, and has alleviated labour intensity.
The purpose of this utility model is to realize like this, a kind of erasing dust-free blackboard of exempting from, comprise frame and the drive roll that is erected on the frame in the structure, driven cylinder, be characterized on frame, being equipped with motor, it drives drive roll by deceleration device and rotates, the endless belt is sleeved on drive roll and the driven cylinder, back at the endless belt working face is provided with bracing or strutting arrangement, linking curved upper guard board in side and following backplate respectively in the above and below of frame, upper inner at following backplate is fixed with fiber mat, it is fitted on the rear surface of endless belt by fixture, and the baffle plate of the band of frame both sides sealing safe edge is sealed at both ends with the endless belt.
When the utility model uses, start motor earlier, the drive drive roll rotates, and then moved in the endless belt, when the plane, endless belt of writing full letter written with chalk is passed through to play backplate, the fiber mat that is fixed on down the backplate inboard is wiped clean the letter written with chalk on the annular zone face, wipes fallen chalk dust and is collected and siphons away.
Be provided with parallel liner plate near the endless belt on frame, be fixed with the fiber mat of pressing close to the endless belt on liner plate, fiber mat can be a hairbrush, also can be felt layers, and its number of plies is the amount doesn't matter.
Originally exempt from erasing dust-free blackboard, the endless belt can be selected plastics for use, not have imitative cloth, but commonly used be rubber strip.
The fiber mat fixing in the upper inner of following backplate can be felt, also can be the fiber cloth pad, can also be hairbrush.
Originally exempt from erasing dust-free blackboard, on the frame drain pan, be horizontally arranged with dust-collecting box and ash disposal mouth.
Originally exempt from erasing dust-free blackboard, bracing or strutting arrangement can be a back-up roller, also can be to support supporting plate, and their two ends are fastening with frame respectively.
Originally exempt from erasing dust-free blackboard, be provided with manual setter, save drive motors, can rotate drive roll, make the endless belt motion with hand in the drive roll outer end.
The utility model has the advantages that simple in structurely, easy to use, no dust helps the healthy of teachers and students, has optimized teaching environment.
Description of drawings
What Fig. 1 provided is structural representation of the present utility model.
Fig. 2 is that the A of Fig. 1 is to view.
The implication of each label representative is as follows among the figure:
1, frame 2, upper guard board 3, endless belt 4, baffle plate 5, following backplate 6, fixture 7, ash disposal mouth 8, drive roll 9, deceleration device 10, motor 11, driven cylinder 12, bracing or strutting arrangement 13, fiber mat 14, liner plate 15, fiber mat 16, dust collecting opening.
The specific embodiment
The specific embodiment that provides below in conjunction with accompanying drawing and accompanying drawing is further described the utility model.
Referring to Fig. 1 and Fig. 2, a kind of erasing dust-free blackboard of exempting from, comprise frame 1 in its structure, be erected at the drive roll 8 on frame 1 top and the driven cylinder 11 of bottom, motor 10 is installed on the frame 1, it drives drive roll 8 by deceleration device 9 and rotates, deceleration device 9 can adopt belt train speed change, also can use speed changer, endless belt 3 is a rubber strip, be sleeved on drive roll 8 and the driven cylinder 11, the back of 3 working faces is provided with back-up roller 12 in the endless belt, linking curved upper guard board in side 2 and following backplate 5 respectively in the above and below of frame 1, upper inner at following backplate 5 is fixed with fiber mat 13, it is fitted on 3 rear surfaces of endless belt by fixture 6, fixture 6 can be a pin, it also can be snap close, on frame 1, be provided with parallel liner plate 14 near the endless belt, on liner plate 14, be fixed with the fiber mat of pressing close to endless belt 3 15, be provided with the baffle plate 4 of band sealing safe edge in frame 1 both sides, it is sealed at both ends with endless belt 3, on frame 1 drain pan, be horizontally arranged with dust-collecting box 16 and ash disposal mouth 7, can external dust catcher, will wipe fallen chalk dust and in time siphon away.
Claims (8)
1, a kind of erasing dust-free blackboard of exempting from, comprise frame (1) in the structure, be erected at the drive roll (8) on the frame (1), driven cylinder (11), it is characterized in that on frame (1), being equipped with motor (10), it drives drive roll (8) by deceleration device (9) and rotates, endless belt (3) is sleeved on drive roll (8) and the driven cylinder (11), the back of (3) working face is provided with bracing or strutting arrangement (12) in the endless belt, linking curved upper guard board in side (2) and following backplate (5) respectively in the above and below of frame (1), upper inner at following backplate (5) is fixed with fiber mat (13), it is fitted on the rear surface of endless belt (3) by fixture (6), and the baffle plate (4) of the band of frame (1) both sides sealing safe edge is sealed at both ends with endless belt (3).
2, by the described erasing dust-free blackboard of exempting from of claim 1, it is characterized in that on frame (1), being provided with parallel liner plate (14) near endless belt (3), on liner plate (14), be fixed with the fiber mat of pressing close to endless belt (3) (15).
3,, it is characterized in that endless belt (3) is rubber strip by the described erasing dust-free blackboard of exempting from of claim 1.
4, by the described erasing dust-free blackboard of exempting from of claim 1, it is characterized in that at the fixing fiber mat (13) of the upper inner of following backplate (5) can be felt, also can be the fiber cloth pad.
5, by the described erasing dust-free blackboard of exempting from of claim 2, it is characterized in that fiber mat (15) can be a hairbrush, also can be felt layers.
6,, it is characterized in that on frame (1) drain pan, being horizontally arranged with dust-collecting box (16) and ash disposal mouth (7) by the described erasing dust-free blackboard of exempting from of claim 1.
7, by the described erasing dust-free blackboard of exempting from of claim 1, it is characterized in that bracing or strutting arrangement (12) can be a support tube, also can be to support supporting plate.
8,, it is characterized in that drive roll (8) is provided with manual setter by the described erasing dust-free blackboard of exempting from of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03269960 CN2651001Y (en) | 2003-09-24 | 2003-09-24 | Free-erasing dustproof blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03269960 CN2651001Y (en) | 2003-09-24 | 2003-09-24 | Free-erasing dustproof blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2651001Y true CN2651001Y (en) | 2004-10-27 |
Family
ID=34330356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03269960 Expired - Fee Related CN2651001Y (en) | 2003-09-24 | 2003-09-24 | Free-erasing dustproof blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2651001Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105730085A (en) * | 2014-12-09 | 2016-07-06 | 杜胜 | Novel teaching blackboard |
| CN106626893A (en) * | 2016-11-24 | 2017-05-10 | 牡丹江师范学院 | Auxiliary device for instruction of liberal arts |
-
2003
- 2003-09-24 CN CN 03269960 patent/CN2651001Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105730085A (en) * | 2014-12-09 | 2016-07-06 | 杜胜 | Novel teaching blackboard |
| CN106626893A (en) * | 2016-11-24 | 2017-05-10 | 牡丹江师范学院 | Auxiliary device for instruction of liberal arts |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |