CN2707526Y - Dust excluding hood of blackboard eraser - Google Patents
Dust excluding hood of blackboard eraser Download PDFInfo
- Publication number
- CN2707526Y CN2707526Y CN 200420067634 CN200420067634U CN2707526Y CN 2707526 Y CN2707526 Y CN 2707526Y CN 200420067634 CN200420067634 CN 200420067634 CN 200420067634 U CN200420067634 U CN 200420067634U CN 2707526 Y CN2707526 Y CN 2707526Y
- Authority
- CN
- China
- Prior art keywords
- dust
- blackboard eraser
- scraper
- excluding hood
- cover body
- 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 teaching appliance, in particular to a dust excluding hood of blackboard eraser for preventing the blackboard eraser from dust pollution in the process of use, provided with a hood body, a limiting spring, compression rods, a compression spring, a scraper, dust-proof rings, a sliding pole, a compression spring for dust-proof rings. The limiting spring is provided at the inner side of the hood body and both sides of the hood body are provided with symmetrical grooves where a pair of compression rods are respectively provided. The compression spring is sheathed at the upper part of the compression rods and two ends of the scraper is connected with the lower part of the compression rods; the dust-proof rings are made of soft and elastic material and fixed into the hood body by the sliding pole and the compression spring for the dust-proof rings. When in use, the blackboard eraser is inserted into the limiting spring at the inner side of the hood body and the dust-proof rings adhere to the blackboard face; when the blackboard eraser erases, dust is uneasy to fall out and fly and the scraper is at one end of the blackboard eraser and above the erasing face of the blackboard eraser. When the compression rods are compressed, the scraper is compressed below the erasing face of the blackboard eraser and the compression rods are moved along the groove of the hood body to erase the dust on the blackboard eraser and achieve the purpose of reducing dust pollution.
Description
Technical field
The utility model relates to a kind of realia, in particular for avoiding the blackboard eraser dust excluding hood of the dust pollution in the blackboard eraser use.
Background technology
Blackboard eraser is a kind of realia commonly used.Common blackboard eraser is made up of wiping flannelette and handle two parts, and the wiping flannelette embeds in the handle, is flat cuboid usually.When its shortcoming was blackboard wiping, dust scattered, and flew upward everywhere.For this reason, dust-proof blackboard eraser miscellaneous has appearred, electrodynamic type for example, rotary-type or the like, wherein, the CN2478795 patent application discloses a kind of crawler-type blackboard and has wiped, it is by housing, the storage ash-pit, scraper, Wiping mechanism is formed, and housing simultaneously is spacious mouthful, and another side has seal cover, the storage ash-pit is separately fixed at the housing both sides, scraper is located at the housing middle part and becomes vertical configuration with the caterpillar drive direction, is installed in the sliding tray below the journal stirrup, is provided with screw in the journal stirrup, Wiping mechanism is by interior panel, scroll wheel and crawler belt are formed, be contained in the housing inner chamber, scroll wheel has a plurality of, is inlaid in the middle of two blocks of interior panels, be divided into two-layer, the upper strata is one, and lower floor is a plurality of, and the upper strata scroll wheel is located at the middle part of crawler belt rotation direction, just below scraper, crawler belt is enclosed within the periphery of scroll wheel, has " " shape sliding tray on housing both sides and two blocks of interior panels, and the axle that scroll wheel is the preceding arranged by lower floor is contained in " " shape sliding tray.
Summary of the invention
The purpose of this utility model is to provide a kind of blackboard eraser dust excluding hood that can effectively reduce dust pollution.
The blackboard eraser dust excluding hood is provided with cover body, spacing spring, depression bar, stage clip, scraper, dust ring, traveller, dust ring stage clip.Spacing spring is located at the cover body inboard, is used for blackboard eraser is fixed in the cover body, and spacing spring can be established each 1 of all around.The cover body both sides are provided with symmetrical groove, and a pair of depression bar is located at respectively in the cover body groove, and compression spring sleeve is located at depression bar top, two of scraper is terminated at the bottom of depression bar, depression bar can move in cover body symmetry groove, drives the dust on the wiping flannelette that scraper scrapes off blackboard eraser, and depression bar can stretch up and down.Dust ring is made by flexible resilient material, and is fixed in the cover body inside edge by traveller and dust ring stage clip.
During use, blackboard eraser inserts in the spacing spring of cover body inboard, and dust ring is close to blackboard panel.During wiping, dust is difficult for being scattered and flies upward, and scraper is in an end of blackboard eraser, and is higher than the wiping surface of blackboard eraser.When the compression depression bar, scraper is depressed under the wiping surface of blackboard eraser, and moves depression bar along the cover body groove, can remove the dust on the blackboard eraser.Reach the purpose that reduces dust pollution.
Description of drawings
Fig. 1 is the structural representation of blackboard eraser dust excluding hood embodiment.
Fig. 2 is the side structure schematic diagram of blackboard eraser dust excluding hood embodiment.
Fig. 3 is the plan structure schematic diagram of blackboard eraser dust excluding hood embodiment.
The specific embodiment
Shown in Fig. 1～3, the blackboard eraser dust excluding hood is made up of cover body 1, spacing spring 2, depression bar 3, stage clip 4, scraper 5, dust ring 6, traveller 7, dust ring stage clip 8 etc.It is square that integral body is prolate.Spacing spring 2 is established each 1 of all around, and is located at the cover body inboard, and blackboard eraser 9 is fixed in the spacing spring.2 symmetrical parallel grooves 11,12 are established in the cover body both sides, and a pair of depression bar 3 is located at respectively in the groove, and stage clip 4 is sheathed on the top of depression bar 3, and packing ring 41 can be established in the stage clip bottom, and two of scraper 5 is terminated at the bottom of depression bar 3.Dust ring 6 is fixed in the cover body inside edge by traveller 7 and dust ring stage clip 8.Back-up ring 71 can be established with the dust ring junction in the traveller bottom.Dust ring can be connected to form by 4 sealing strips.
Claims (5)
1, blackboard eraser dust excluding hood is characterized in that being provided with cover body, spacing spring, depression bar, stage clip, scraper, dust ring, traveller, dust ring stage clip; Spacing spring is located at the cover body inboard, and the cover body both sides are provided with symmetrical groove, and a pair of depression bar is located at respectively in the cover body groove, and compression spring sleeve is located at depression bar top, and two of scraper is terminated at the bottom of depression bar, and dust ring is fixed in the cover body inside edge by traveller and dust ring stage clip.
2, blackboard eraser dust excluding hood as claimed in claim 1, it is characterized in that spacing spring establish all around each 1.
3, blackboard eraser dust excluding hood as claimed in claim 1 is characterized in that establishing packing ring bottom the stage clip.
4, blackboard eraser dust excluding hood as claimed in claim 1 is characterized in that establishing back-up ring with the dust ring junction bottom the traveller.
5, blackboard eraser dust excluding hood as claimed in claim 1 is characterized in that dust ring is connected to form by 4 sealing strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067634 CN2707526Y (en) | 2004-06-16 | 2004-06-16 | Dust excluding hood of blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067634 CN2707526Y (en) | 2004-06-16 | 2004-06-16 | Dust excluding hood of blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2707526Y true CN2707526Y (en) | 2005-07-06 |
Family
ID=34852465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420067634 Expired - Fee Related CN2707526Y (en) | 2004-06-16 | 2004-06-16 | Dust excluding hood of blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2707526Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079984A (en) * | 2016-06-26 | 2016-11-09 | 钱煜琴 | A kind of dust-proof chalk eraser |
| CN107813633A (en) * | 2017-11-01 | 2018-03-20 | 贾爱忠 | A kind of Multifunctional education instructional device |
-
2004
- 2004-06-16 CN CN 200420067634 patent/CN2707526Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106079984A (en) * | 2016-06-26 | 2016-11-09 | 钱煜琴 | A kind of dust-proof chalk eraser |
| CN106079984B (en) * | 2016-06-26 | 2017-11-10 | 季业卿 | A kind of dust-proof chalk eraser |
| CN107415541A (en) * | 2016-06-26 | 2017-12-01 | 钱煜琴 | A kind of improved dust-proof chalk eraser |
| CN107813633A (en) * | 2017-11-01 | 2018-03-20 | 贾爱忠 | A kind of Multifunctional education instructional device |
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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 |