CN2129688Y - Multiple picture dustless blackboard - Google Patents
Multiple picture dustless blackboard Download PDFInfo
- Publication number
- CN2129688Y CN2129688Y CN 92227495 CN92227495U CN2129688Y CN 2129688 Y CN2129688 Y CN 2129688Y CN 92227495 CN92227495 CN 92227495 CN 92227495 U CN92227495 U CN 92227495U CN 2129688 Y CN2129688 Y CN 2129688Y
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- blackboard
- long
- framework
- axle
- small size
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- Expired - Fee Related
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Abstract
The utility model discloses a multiple pictures dustless blackboard for writing, comprising a frame, a blackboard surface, a rotary device and a blackboard eraser. The blackboard surface comprises a plurality of long blackboard bodies which can rotate. The multiple pictures dustless blackboard enlarges the usable screen of the blackboard, contents on the blackboard of classes can be repeatedly occurred, and the multiple pictures dustless blackboard is convenient for teachers to summarize the contents and good for students to study. Moreover, the long term serious problem of powder dust pollution in classrooms can be completely solved. The teachers and the students' health is ensured. The multiple pictures dustless blackboard can be widely used for teaching in cities and villages and in propagation columns and billboards at public places.
Description
The utility model relates to a kind of teaching aid, especially a kind of writing with several face dust-free blackboards.
Existing normal blackboard mainly contains the defective of two aspects, the one, breadth is little, when the writing on the blackboard content more for a long time, need wipe and write content, often influence that the teacher concludes explanation and the student takes notes; Another defective is when erasing the board, and chalk dust flies upward everywhere, to the healthy adverse effect that causes of teachers and students, and the teacher that some is taught all the year round even therefore suffer from occupational disease.In recent years, for overcoming the defective of this two aspect, some follow-on blackboard and blackboard erasers have appearred, it as application number 91225536.6 Chinese patent application, provided a kind of modified " Multi-paged blackboard " of deployable folding use, though this utility model has increased the blackboard amplitude, it is not too convenient to use, and visual effect was relatively poor when this blackboard launched to use, and did not also solve the chalk dust pollution problems.A lot of for preventing that chalk dust from flying upward the blackboard eraser kind of designing, it as application number 91224413.5 Chinese patent application " dustless eraser ", application number is that 91220735.3 Chinese patent application " dust-absorbing blackboard brush " and application number are Chinese patent application " automatic cartridge dust absorption blackboard eraser " of 91205194.9 etc., they all have a common characteristic, utilize blackboard eraser itself to adsorb exactly, reduce dust, do not change the front of the changeing system mode that erases the board in itself, thereby the dustproof effect that can reach also is extremely limited, can't fundamentally solve classroom air-borne dust pollution problems.
The purpose of this utility model is to overcome the above-mentioned two aspect defectives of existing blackboard and blackboard eraser, provides a kind of and writes breadth greatly and several face dust-free blackboards of no dust pollution.
The utility model is achieved through the following technical solutions.
Several face dust-free blackboards are made up of framework, blackboard surface, tumbler and blackboard cleaning device, blackboard surface is that the long blackboard body of equilateral triangle constitutes by one group of cross section, be fixed with axle on each long blackboard body, be installed in each long blackboard body in the framework side by side by axle, under the drive of the tumbler in being placed in framework, each long blackboard body can rotate in framework around its axle, constitutes the width of cloth blackboard surface when neat when certain of each long blackboard body is simultaneously equal, after having write one side, can produce another side again.Therefore, the usable floor area of several face dust-free blackboards of this utility model is three times of normal blackboard breadth.
The tumbler of several face dust-free blackboards is by one group of travelling gear, one prescription is formed to gear and small size motor, each travelling gear is fixed on the axle that links to each other with long blackboard body, direction gear is placed in respectively between the two adjacent travelling gears, drive each travelling gear and direction gear with small size motor, this tumbler also can utilize the engagement of tooth bar and travelling gear or adopt manual mode to replace.
The blackboard cleaning device of several face dust-free blackboards is made up of blackboard brush, screw mandrel and small size motor, whole blackboard cleaning device is installed in the back side of long blackboard body in the framework, blackboard brush is installed on the screw mandrel, one end of screw mandrel is equipped with small size motor, making it to drive blackboard brush moves around, the blackboard brush of this blackboard cleaning device also can adopt manual mode to make it to move around, because it is that carry out at the back side of blackboard surface in framework that blackboard brush erases the board, and blackboard surface seals with a panel all around on framework, therefore avoid dust to fly upward everywhere, reached the purpose of no dust pollution.
Several face dust-free blackboards of the present utility model have not only enlarged the spendable breadth of blackboard, the writing on the blackboard content of whole course can be repeated, not only make things convenient for the teacher to conclude summary but also be beneficial to the student and carried out complete notes, and thoroughly solved seriously polluted this difficult problem of classroom air-borne dust for a long time, ensured that numerous teachers and students' is healthy, can be widely used in also can be used in the propaganda board and billboard of public place in cities and towns and the rural area teaching.
Accompanying drawing is the structural representation of several face dust-free blackboards.
Provide the specific embodiment of this utility model below in conjunction with accompanying drawing.
As shown in the figure, several face dust-free blackboards are by framework (1), blackboard surface tumbler and blackboard cleaning device are formed, blackboard surface is long blackboard body (2) formation of equilateral triangle by one group of cross section, be fixed with axle (3) on each long blackboard body (2), by axle (3) each long blackboard body (2) is installed in the framework (1) side by side, tumbler is by one group of travelling gear (8), one prescription is formed to gear (9) and small size motor (7), each travelling gear (8) is fixed on the axle (3) that is fixedly linked with long blackboard body (2), direction gear (9) is placed in respectively between the two adjacent travelling gears (8), identical with the rotation direction that guarantees each travelling gear (8), drive each travelling gear (8) and direction gear (9) by small size motor (7), thereby each long blackboard body (2) can be rotated and constitute the different blackboard surface of three width of cloth.Blackboard cleaning device is made up of blackboard brush (4), screw mandrel (6) and small size motor (5), whole blackboard cleaning device is installed in the back side of long blackboard body (2) in the framework (1), blackboard brush (4) is installed on the screw mandrel (6), one end of screw mandrel (6) is equipped with small size motor (5), makes it to drive blackboard brush (4) and moves around and erase the board.Go up sealing with a panel of blackboard surface all around at framework (1), have chalk dust outlet (10) in the bottom of framework (1).
Claims (3)
1, a kind of several face dust-free blackboards, it is characterized in that: these several face dust-free blackboards are made up of framework, blackboard surface, tumbler and blackboard cleaning device, blackboard surface is that the long blackboard body of equilateral triangle constitutes by one group of cross section, be fixed with axle on each long blackboard body, be installed in each long blackboard body in the framework side by side by axle, under the drive of the tumbler in being placed in framework, each long blackboard body can rotate in framework around its axle.
2, several face dust-free blackboards according to claim 1, it is characterized in that tumbler is by one group of travelling gear, one prescription is formed to gear and small size motor, each travelling gear is fixed on the axle that links to each other with long blackboard body, direction gear is placed in respectively between the two adjacent travelling gears, drive each travelling gear and direction gear with small size motor, this tumbler also can utilize the engagement of tooth bar and travelling gear or adopt manual mode to replace.
3, several face dust-free blackboards according to claim 1 and 2, it is characterized in that blackboard cleaning device is made up of blackboard brush, screw mandrel and small size motor, whole blackboard cleaning device is installed in the back side of long blackboard body in the framework, blackboard brush is installed on the screw mandrel, one end of screw mandrel is equipped with small size motor, make it to drive blackboard brush and move around, the blackboard brush of this blackboard cleaning device also can adopt manual mode to make it to move around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92227495 CN2129688Y (en) | 1992-07-08 | 1992-07-08 | Multiple picture dustless blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92227495 CN2129688Y (en) | 1992-07-08 | 1992-07-08 | Multiple picture dustless blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2129688Y true CN2129688Y (en) | 1993-04-14 |
Family
ID=33771439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92227495 Expired - Fee Related CN2129688Y (en) | 1992-07-08 | 1992-07-08 | Multiple picture dustless blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2129688Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625173A (en) * | 2013-12-06 | 2014-03-12 | 安徽理工大学 | Novel three-side-reversible blackboard |
| CN103802551A (en) * | 2014-01-22 | 2014-05-21 | 洛阳理工学院 | Blackboard with three surfaces capable of being turned |
| CN104842689A (en) * | 2015-04-20 | 2015-08-19 | 昆明理工大学 | Louvered blackboard with automatic dust removal function |
| CN106142928A (en) * | 2016-09-23 | 2016-11-23 | 杭州富阳尚科科技有限公司 | A kind of vertical Wiping-free blackboard imparted knowledge to students |
| CN110001243A (en) * | 2019-04-23 | 2019-07-12 | 长沙宁湖机械设备有限公司 | A kind of three face rotary type dust-free blackboards |
| CN112497961A (en) * | 2020-12-07 | 2021-03-16 | 霍玉鹏 | Double-sided blackboard |
-
1992
- 1992-07-08 CN CN 92227495 patent/CN2129688Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625173A (en) * | 2013-12-06 | 2014-03-12 | 安徽理工大学 | Novel three-side-reversible blackboard |
| CN103802551A (en) * | 2014-01-22 | 2014-05-21 | 洛阳理工学院 | Blackboard with three surfaces capable of being turned |
| CN104842689A (en) * | 2015-04-20 | 2015-08-19 | 昆明理工大学 | Louvered blackboard with automatic dust removal function |
| CN106142928A (en) * | 2016-09-23 | 2016-11-23 | 杭州富阳尚科科技有限公司 | A kind of vertical Wiping-free blackboard imparted knowledge to students |
| CN106142928B (en) * | 2016-09-23 | 2018-05-25 | 杭州富阳尚科科技有限公司 | A kind of vertical Wiping-free blackboard of teaching |
| CN110001243A (en) * | 2019-04-23 | 2019-07-12 | 长沙宁湖机械设备有限公司 | A kind of three face rotary type dust-free blackboards |
| CN112497961A (en) * | 2020-12-07 | 2021-03-16 | 霍玉鹏 | Double-sided blackboard |
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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 |