CN201095238Y - Rotatable blackboard - Google Patents
Rotatable blackboard Download PDFInfo
- Publication number
- CN201095238Y CN201095238Y CNU2007200867163U CN200720086716U CN201095238Y CN 201095238 Y CN201095238 Y CN 201095238Y CN U2007200867163 U CNU2007200867163 U CN U2007200867163U CN 200720086716 U CN200720086716 U CN 200720086716U CN 201095238 Y CN201095238 Y CN 201095238Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- brush
- rocking handle
- pulleys
- chalk dust
- 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
Links
- 239000000428 dust Substances 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000746 purification Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
Images
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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a rotatable blackboard, which comprises pulleys, a rocking handle, a blackboard, a blackboard brush, and a spring. The blackboard brush is arranged on the reverse side of the blackboard and connected with the wall body through the spring, the pulleys are fixed on the wall bodies around and at two sides the blackboard, the rocking handle is connected with the axis of the pulleys, the pulleys are connected with the blackboard through a cable wire, a chalk dust groove is arranged under the blackboard, and an adjusting nut is arranged between the blackboard brush and the blackboard. Because the adoption of the structure, the blackboard brush is installed on the reverse side of the blackboard, the blackboard is rotated through the rocking handle, then the blackboard can be cleaned by the friction between the blackboard and the blackboard brush, the dust is dropped inside the chalk dust groove and can not fly anywhere, and the purposes of cleansing the environment and maintaining the health of the teacher and the students can be realized. The blackboard also has the advantages of simple structure and convenient using, etc.
Description
Technical field
The utility model relates to a kind of improvement of blackboard, particularly a kind of rotating blackboard.
Background technology
Now in the classroom whenever running into when erasing the board, often chalk dust flies upward everywhere, contaminated environment endangers the healthy of academics and students.
Summary of the invention
The purpose of this utility model will provide a kind of rotating blackboard exactly, and it can overcome above-mentioned the deficiencies in the prior art, reach avoid that chalk dust flies upward everywhere, environment purification and safeguard the purpose that the academics and students is healthy.
The purpose of this utility model is achieved in that a kind of rotating blackboard, comprise pulley 1, rocking handle 2, blackboard 3, blackboard brush 4 and spring 5, blackboard brush 4 is arranged on the back side of blackboard 3, be connected with body of wall by spring 5, be fixed with pulley 1 around the blackboard 3 and on the body of wall in the middle of the both sides, rocking handle 2 is connected with the axle of pulley 1, and pulley 1 is connected with blackboard 3 by steel wire rope, the below of blackboard 3 is provided with chalk dust ledge 6, is provided with adjusting nut 7 between blackboard brush 4 and the blackboard 3.
Owing to adopt said structure, blackboard brush is installed in the back side of blackboard, utilize the rocking handle Rotary Blackboard, by the friction between blackboard and the blackboard brush blackboard is cleaned, chalk dust drops in the chalk dust ledge, can not fly upward everywhere, reaches environment purification and safeguards the purpose that the academics and students is healthy.The utility model also is simple in structure and convenient in use.
Description of drawings
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is a structural representation of the present utility model.
Fig. 1 double as Figure of abstract.
Among the figure: 1, pulley, 2, rocking handle, 3, blackboard, 4, blackboard brush, 5, spring, 6, chalk dust ledge, 7, adjusting nut.
The specific embodiment
As shown in Figure 1, a kind of rotating blackboard, comprise pulley 1, rocking handle 2, blackboard 3, blackboard brush 4 and spring 5, blackboard brush 4 is arranged on the back side of blackboard 3, is connected with body of wall by spring 5, is being fixed with pulley 1 around the blackboard 3 and on the body of wall in the middle of the both sides; rocking handle 2 is connected with the axle of pulley 1; pulley 1 is connected with blackboard 3 by steel wire rope, and the below of blackboard 3 is provided with chalk dust ledge 6, is provided with adjusting nut 7 between blackboard brush 4 and the blackboard 3.
In the time of need erasing the board, earlier with the distance between adjusting nut 7 adjusting blackboards 3 and the blackboard brush 4, blackboard 3 is contacted with blackboard brush 4, rotation crank 2 then, and blackboard 3 is scroll-up/down under the drive of the steel wire rope of pulley 1, blackboard brush 4 and blackboard 3 frictions, blackboard 3 is cleaned, the chalk dust that falls drops in the chalk dust ledge 6, when chalk dust acquires a certain degree, can take off chalk dust ledge 6 chalk dust in it is poured out.
In the time of need not erasing the board, with adjusting nut 7 the distance accent between blackboard 3 and the blackboard brush 4 is opened, blackboard brush 4 is not contacted with blackboard 3, rotation crank 2 can continue to write on blackboard 3.
Claims (1)
1, a kind of rotating blackboard, comprise pulley (1), rocking handle (2), blackboard (3), blackboard brush (4) and spring (5), it is characterized in that: blackboard brush (4) is arranged on the back side of blackboard (3), be connected with body of wall by spring (5), be fixed with pulley (1) on the body of wall in the middle of blackboard (3) reaches both sides all around; rocking handle (2) is connected with the axle of pulley (1); pulley (1) is connected with blackboard (3) by steel wire rope; the below of blackboard (3) is provided with chalk dust ledge (6), is provided with adjusting nut (7) between blackboard brush (4) and the blackboard (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200867163U CN201095238Y (en) | 2007-08-28 | 2007-08-28 | Rotatable blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200867163U CN201095238Y (en) | 2007-08-28 | 2007-08-28 | Rotatable blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201095238Y true CN201095238Y (en) | 2008-08-06 |
Family
ID=39922298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200867163U Expired - Fee Related CN201095238Y (en) | 2007-08-28 | 2007-08-28 | Rotatable blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201095238Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231547A (en) * | 2020-03-26 | 2020-06-05 | 山东理工职业学院 | Multifunctional teaching blackboard |
-
2007
- 2007-08-28 CN CNU2007200867163U patent/CN201095238Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231547A (en) * | 2020-03-26 | 2020-06-05 | 山东理工职业学院 | Multifunctional teaching blackboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080806 Termination date: 20090928 |