CN2245002Y - Non-electric dust-absorbing blackboard eraser - Google Patents
Non-electric dust-absorbing blackboard eraser Download PDFInfo
- Publication number
- CN2245002Y CN2245002Y CN 95228263 CN95228263U CN2245002Y CN 2245002 Y CN2245002 Y CN 2245002Y CN 95228263 CN95228263 CN 95228263 CN 95228263 U CN95228263 U CN 95228263U CN 2245002 Y CN2245002 Y CN 2245002Y
- Authority
- CN
- China
- Prior art keywords
- runner
- self
- support frame
- blackboard eraser
- fixed
- 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 non-electric dust-absorbing blackboard eraser. The utility model is a non-electric mechanical device which uses friction to rotate and self lock. The aim of the utility model is to achieve the dust-absorbing effect when the chalk handwriting on the blackboard is erased. The utility model is mainly characterized in that two rotary wheels 10 and 11 are adopted to erase a blackboard, and a vertical transverse brush is adopted while in use. When the utility model is moved leftwards along the surface of the blackboard, the left wheel 10 is self-locked, and the right wheel 11 is clockwise rotated; when the utility model is moved rightwards, the right wheel is self-locked, and the left wheel is rotated so that the chalk dust erased on the wheels is continuously brought in a box, the chalk dust is brushed in the box under the action of brushes 12, 13, 14 and 15 in the box, and thus the goal of dust absorption is achieved.
Description
The utility model relates to a kind of device of wiping letter written with chalk on the blackboard, especially can reach the blackboard eraser of pick-up performance when erasing the board.
At present, known blackboard eraser is made up of bonnet and the rubbing surface that is fixed on the bonnet, and chalk powder flies upward everywhere when blackboard eraser, infringement teacher's student's physical and mental health.
The purpose of this utility model is that a kind of no electric dust absorption blackboard eraser will be provided, and it can reach the purpose of dust suction when erasing the board.
The purpose of this utility model is achieved in that this blackboard eraser is made up of two runners, runner support frame and bonnet.Two runners are set in parallel on the runner support frame, and each runner two ends is fixed with self-locking device respectively; Rubbing surface is fixed on two runners by Spring Card and/or screw; The bonnet inboard is fixed with two or four strip hairbrush parallel with runner.Want vertical horizontal brush during use, when blackboard eraser when blackboard surface moves, front-wheel (or trailing wheel) self-locking, trailing wheel (or front-wheel) rotates under the effect of frictional force, like this chalk powder just wiping on front-wheel (or trailing wheel); When blackboard eraser reverse when mobile along blackboard surface, last time self-locking was wiped the runner that chalk powder is arranged and is this time rotated under the effect of frictional force chalk powder is brought in the box, under the strip hairbrush effect of bonnet, the chalk powder brush is fallen in the box, the chalk powder that so goes down repeatedly under wiping all falls into box, has avoided chalk powder to fly upward everywhere and reaches the purpose of dust suction.
Owing to adopted such scheme, can when erasing the board, reach the purpose of dust suction, and the replaceable rubbing surface after using a period of time abrasion of the rubbing surface on the runner uses repeatedly.This blackboard eraser does not need electric power, and is simple in structure, easy to use.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the runner front view; Fig. 2 is the runner vertical view; Fig. 3 is a Spring Card; Fig. 4 is the runner support frame; Fig. 5 is a runner support frame cutaway view; Fig. 6 is a fundamental diagram.
Each one of no electric dust absorption blackboard eraser respectively claims as follows:
1 is runner shaft; 2 is the self-locking gear on the runner; 3 is runner; 4 is Spring Card; 5 is the runner support frame; 6 are the self-locking tooth; 7 and 8 is oval runner axis hole; 9 is spring card slot; 10 is left wheel; 11 is right wheel; 12,13,14 and 15 are the bar shaped hairbrush; 16 is the blackboard eraser bonnet; 17 is blackboard surface.
During use, rubbing surface is entangled on the runner 3, is stuck on the spring card slot 9 with Spring Card 4 then, rubbing surface is fixed on the runner.Such runner has two, all is installed on the runner support frame 5, and the bonnet 16 that closes then can use.
Want vertical horizontal brush as shown in Figure 6 during use.When blackboard eraser when blackboard surface 17 is moved to the left, the left side tooth engagement of the self-locking gear of left wheel and the self-locking tooth 6 on the support frame 5 makes left wheel 10 reach self-locking and stops operating, the chalk powder of blackboard is all brushed on left wheel 10 like this, and simultaneously right wheel 11 because the self-locking gear is not in engagement, under the effect of frictional force and do and clockwise rotate.When blackboard eraser moves right, the right side tooth of the self-locking gear of right wheel 11 and the self-locking tooth 6 on the support frame 5 meshes and stops operating, chalk is just wiped on right wheel 11 like this, and left wheel 10 is done under the effect of frictional force and is rotated counterclockwise, bring in the box last time moving the chalk powder of wiping on revolver, the chalk powder that so goes down repeatedly under wiping all falls into box, has avoided chalk powder to fly upward everywhere and reaches the purpose of dust suction.But to open bonnet 16 cleaning dirt thing in time after being to use a period of time.
Claims (4)
1, a kind of no electric dust absorption blackboard eraser, it is characterized in that this blackboard eraser is made up of two runners, runner support frame and bonnet, two runners are set in parallel on the runner support frame, each runner two ends is fixed with self-locking device respectively, rubbing surface is fixed on two runners by Spring Card and/or screw, and the bonnet inboard is fixed with two or four strip hairbrush parallel with runner.
2, according to the described device of claim 1, it is characterized in that self-locking device is made up of the self-locking tooth that is fixed between the two oval runner axis holes on the fixed gear at two runner two ends and the runner support frame, vertical when traversing when blackboard eraser, self-locking tooth engagement fixing on the fixed gear at front-wheel two ends and the runner support frame stops operating.
3, according to the described device of claim 1, it is characterized in that self-locking device is made up of the self-locking tooth that is fixed on two oval runner axis hole both sides on the fixed gear at two runner two ends and the runner support frame, vertical when traversing when blackboard eraser, self-locking tooth engagement fixing on the fixed gear at trailing wheel two ends and the runner support frame stops operating.
4,, it is characterized in that two runner two ends are fixed on the runner support frame by automatic clutch according to the described device of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95228263 CN2245002Y (en) | 1995-12-08 | 1995-12-08 | Non-electric dust-absorbing blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95228263 CN2245002Y (en) | 1995-12-08 | 1995-12-08 | Non-electric dust-absorbing blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2245002Y true CN2245002Y (en) | 1997-01-15 |
Family
ID=33873892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95228263 Expired - Fee Related CN2245002Y (en) | 1995-12-08 | 1995-12-08 | Non-electric dust-absorbing blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2245002Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223805A (en) * | 2013-04-22 | 2013-07-31 | 蔡宇豪 | Vacuum-type blackboard eraser |
| CN103991318A (en) * | 2014-05-07 | 2014-08-20 | 江苏大学 | Pure mechanical type environmental-friendly dust collecting blackboard eraser |
| CN107662435A (en) * | 2016-07-27 | 2018-02-06 | 玛吾力汗·切肯 | Dust absorption blackboard eraser |
-
1995
- 1995-12-08 CN CN 95228263 patent/CN2245002Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103223805A (en) * | 2013-04-22 | 2013-07-31 | 蔡宇豪 | Vacuum-type blackboard eraser |
| CN103991318A (en) * | 2014-05-07 | 2014-08-20 | 江苏大学 | Pure mechanical type environmental-friendly dust collecting blackboard eraser |
| CN103991318B (en) * | 2014-05-07 | 2016-03-02 | 江苏大学 | The green dust absorption blackboard eraser of a kind of Purely mechanical |
| CN107662435A (en) * | 2016-07-27 | 2018-02-06 | 玛吾力汗·切肯 | Dust absorption 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 |