CN2725039Y - Dust retaining blackboard eraser - Google Patents
Dust retaining blackboard eraser Download PDFInfo
- Publication number
- CN2725039Y CN2725039Y CN 200420070252 CN200420070252U CN2725039Y CN 2725039 Y CN2725039 Y CN 2725039Y CN 200420070252 CN200420070252 CN 200420070252 CN 200420070252 U CN200420070252 U CN 200420070252U CN 2725039 Y CN2725039 Y CN 2725039Y
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- dust
- utility
- model
- dust retaining
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a dust retaining blackboard eraser, comprising a blackboard eraser. All around the frames of the rectangular blackboard eraser are fixed with a dust retaining board whose surface is adhered with sealed adhesive hairs and whose inner part is provided with a lateral slide path rod. The brush is sheathed at the surface of the slide path rod and can be moved from left to right along the slide path rod, and the back of the blackboard eraser is fixedly connected with a retractable operating rod. The utility model has the characteristics of simple structure and easy use, can prevent chalk dust flying around and can be adequate for teachings.
Description
Technical field the utility model relates to a kind of classroom instruction apparatus, the dust-break blackboard eraser that uses during especially a kind of erasing the board.
Technical background often will use blackboard eraser to remove the chalk writing on blackboard surface at present in classroom instruction.The situation that usually causes chalk powder to fly upward everywhere influences the healthy of numerous teachers and students.
The summary of the invention the purpose of this utility model provides a kind of dust-break blackboard eraser that prevents that when erasing the board chalk powder from flying upward.
For achieving the above object, the utility model dust-break blackboard eraser has blackboard eraser, frame is connected with dust board around the rectangle blackboard eraser, the dust board surface is bonded with the sealing adhesive hair, the transverse slipway bar is installed in the dust board, hairbrush is socketed on slideway bar surface and can be along slideway bar move left and right, and the back side of blackboard eraser is connected with telescopic action bars.
The utility model has the advantages that: simple in structure, easy to use, prevent that the chalk foam from flying upward, and is applicable in the classroom instruction and uses everywhere.
Description of drawings Fig. 1 is the overall structure schematic diagram of the utility model dust-break blackboard eraser.
The specific embodiment such as Fig. 1 show, the utility model dust-break blackboard eraser has blackboard eraser 1, frame is connected with dust board 1-1 around the rectangle blackboard eraser 1, the dust board surface is bonded with the sealing adhesive hair, be equipped with in the dust board and mould system transverse slipway bar 2, hairbrush 3 is socketed on slideway bar surface and can be along slideway bar move left and right, and the back side of blackboard eraser is connected with telescopic action bars 4.In the use around the blackboard eraser will the erase the board hairbrush of writing effect of the dust board of frame be enclosed in the rectangular frame, the sealing adhesive hair that is bonded in the dust board surface can prevent that the chalk powder that produces in hairbrush and the chalk writing friction process from overflowing, and prevents that dust from dispersing everywhere.The affixed flexible action bars in the back side of blackboard eraser can be adjusted its suitable length in use according to the actual needs, operation when making things convenient for the shorter personnel of stature to erase the board.
Claims (1)
1, a kind of dust-break blackboard eraser, comprise blackboard eraser (1), it is characterized in that: frame is connected with dust board (1-1) around the rectangle blackboard eraser (1), the dust board surface is bonded with the sealing adhesive hair, transverse slipway bar (2) is installed in the dust board, hairbrush (3) is socketed on slideway bar surface and can be along slideway bar move left and right, and the back side of blackboard eraser is connected with telescopic action bars (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070252 CN2725039Y (en) | 2004-08-11 | 2004-08-11 | Dust retaining blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070252 CN2725039Y (en) | 2004-08-11 | 2004-08-11 | Dust retaining blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2725039Y true CN2725039Y (en) | 2005-09-14 |
Family
ID=35039764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070252 Expired - Fee Related CN2725039Y (en) | 2004-08-11 | 2004-08-11 | Dust retaining blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2725039Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309377A (en) * | 2014-11-15 | 2015-01-28 | 贵州大学 | Dust absorbing type blackboard eraser |
-
2004
- 2004-08-11 CN CN 200420070252 patent/CN2725039Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309377A (en) * | 2014-11-15 | 2015-01-28 | 贵州大学 | Dust absorbing type blackboard eraser |
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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 |