CN2185686Y - Blackboard eraser capable of collecting dust - Google Patents
Blackboard eraser capable of collecting dust Download PDFInfo
- Publication number
- CN2185686Y CN2185686Y CN 94205058 CN94205058U CN2185686Y CN 2185686 Y CN2185686 Y CN 2185686Y CN 94205058 CN94205058 CN 94205058 CN 94205058 U CN94205058 U CN 94205058U CN 2185686 Y CN2185686 Y CN 2185686Y
- Authority
- CN
- China
- Prior art keywords
- dust
- groove
- square
- square groove
- eraser
- 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 title claims abstract description 36
- 230000007547 defect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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- Drawing Aids And Blackboards (AREA)
Abstract
A dust collecting blackboard eraser for removing chalk marks on a blackboard aims at the defects that the existing blackboard eraser causes dust to fly away, pollutes the environment and has short service life; the eraser seat is provided with a square groove, a square elastic pad with the same size is arranged in the groove, a group of dust collecting frames capable of sliding in the square groove are adhered on the pad, and a strip-shaped groove for fixing a dust wiping piece is further arranged in the middle of the square groove, so that the invention aims of dust collection, long service life, low manufacturing cost and no need of electricity are fulfilled.
Description
The utility model relates to a kind of teaching aid, particularly about removing the apparatus of blackboard chalk writing.
The usefulness of removing the blackboard chalk writing at present has: the plain edition blackboard eraser that is combined by felt pan and supporting plate; By small machine, the power type blackboard eraser that felt rug and dust-collecting box combine, the former easily makes dust from flying, and the life-span is short.Latter's dust from flying is controlled to some extent, but the price height, the power consumption source, fragile, operation is also not very convenient, all is not desirable.
The purpose of this utility model is to provide a kind of collection dust, and the life-span is long, and cost is low, non-electric blackboard eraser.
For achieving the above object, the utility model has carried out technological improvement to existing commercially available blackboard eraser, that is: have the square groove that exceeds a plane in wiping seat at the end, stud with square cushion in the groove, bonding one group of section is L or L type on the pad, the frame that gathers dust that exceeds trough rim and can slide within it, and in square groove, also have the bar-shaped trough that exceeds a plane, stud with in this groove and exceed the wiping dirt spare that trough rim is used to remove dust, leave dust collecting trough between the bar-shaped trough.Be the effective collection dust, in its frame inwall that gathers dust bonding be used to the fine hair pad that prevents that dust from flying to escape, also for reducing unnecessary friction, top, edge limit is garden shape or arc.
The advantage that this reality is made novel collection dust eraser is that (1) is simple in structure, and is easily manufactured, with low cost; (2) pick-up performance is remarkable, reduces environmental pollution, and use flexibly (3), and dust suction frame frictional force is little, wipes dirt spare and goes out groove adjustable height, long service life.
Below in conjunction with accompanying drawing embodiment of the present utility model is further described:
Fig. 1 is the Facad structure schematic diagram of collection dust eraser described in the utility model.
Fig. 2 is a collection dust eraser A-A sectional schematic diagram described in the utility model.
By Fig. 1,2 as can be known, collection dust eraser described in the utility model, be by wiping seat (1), frame (2) gathers dust, square cushion (4) is wiped dirt spare (5) and is formed, and the frame (2) that wherein gathers dust is bonded on the square cushion (4) that is set in the square groove of wiping on seat (1) seat (a) by adhesive, and can in square groove (a), slide, and its frame that gathers dust (2) and blackboard by the edge inwall that touches bonding be used to the fine hair pad (3) that prevents that dust from flying to escape; Wipe dirt spare (5) and be set in the interior bar-shaped trough (b) of square groove, and exceed trough rim,, leave between the bar-shaped trough (b) and store the dust collecting trough (6) that dust is used so that wipe the blackboard writing.
Wiping seat among this embodiment, square groove, bar-shaped trough are an integral body, also can be made up by separation member, for ease of the inspection situation of gathering dust, are transparent material together with the frame that gathers dust interior, and square cushion is a foam polyolefin material, and wiping dirt spare is a felt materials.
Claims (2)
1, a kind of collection dust eraser of wiping dirt spare (5) that contains, it is characterized in that wiping seat and have the square groove (a) that exceeds a plane on (1) end, stud with square cushion (4) in the groove, bonding one group of section is L or L type on the pad, the frame that gathers dust (2) that exceeds trough rim and can slide within it, have the bar-shaped trough (b) that exceeds a plane in the square groove (a), stud with in this groove and exceed the wiping dirt spare (5) that trough rim is used to remove dust, leave dust collecting trough (6) between bar-shaped trough.
2, collection dust eraser according to claim 1, it is characterized in that the said frame that gathers dust (2, its inwall bonding be used to the fine hair pad (3) that prevents that dust from flying to escape, top, edge limit is curved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205058 CN2185686Y (en) | 1994-03-19 | 1994-03-19 | Blackboard eraser capable of collecting dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94205058 CN2185686Y (en) | 1994-03-19 | 1994-03-19 | Blackboard eraser capable of collecting dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2185686Y true CN2185686Y (en) | 1994-12-21 |
Family
ID=33824087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94205058 Expired - Fee Related CN2185686Y (en) | 1994-03-19 | 1994-03-19 | Blackboard eraser capable of collecting dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2185686Y (en) |
-
1994
- 1994-03-19 CN CN 94205058 patent/CN2185686Y/en not_active Expired - Fee Related
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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 |