CN2285719Y - Dustless blackboard eraser - Google Patents
Dustless blackboard eraser Download PDFInfo
- Publication number
- CN2285719Y CN2285719Y CN 96240231 CN96240231U CN2285719Y CN 2285719 Y CN2285719 Y CN 2285719Y CN 96240231 CN96240231 CN 96240231 CN 96240231 U CN96240231 U CN 96240231U CN 2285719 Y CN2285719 Y CN 2285719Y
- Authority
- CN
- China
- Prior art keywords
- dust
- dust catcher
- suction nozzle
- electromagnet
- wiper plate
- 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 24
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 241001443588 Cottus gobio Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a dustless blackboard eraser belongs to a teaching aid, and it includes three departments of cleaning head, connecting pipe, dust catcher. When the chalk dust collector is used, a power supply is switched on, the button is pressed, and the control test head sucks chalk dust into the dust collector while erasing chalk writing. Therefore, the teaching environment is greatly improved.
Description
The utility model belongs to a kind of teaching aid, specializes in blackboard wiping and uses.
Widely used blackboard eraser is made up of felt and the iron sheet backing that is used for fixing felt in the school at present, though it is simple in structure, cheap, but a large amount of dust that produce in the use bring severe contamination to classroom environment, cause harmful effect to teachers and students are healthy.
In view of this, the purpose of this utility model be to provide a kind of can be with the dust-free black board eraser of the no dust pollution of the chalk dust inspiration dust catcher under wiping.
Technical solution of the present utility model is: dust-free black board eraser is by the wiping head, tube connector and dust catcher are formed, tube connector is identical with existing domestic vacuum cleaners with dust catcher, the wiping head is made up of suction nozzle and the press button that is installed in the Wiper plate of suction nozzle opening part and is installed in the suction nozzle both sides, the Wiper plate surface is fixed with cleaning piece, and has some air suction openings, and cleaning piece can be a sponge, felt, palm fiber etc.
In order to improve the utilization rate of dust catcher, can draw the many tube connectors that connect the wiping head from a dust catcher, set up air door at every tube connector and dust catcher junction, air door is made up of blinker, spring, electromagnet, blinker, spring, electromagnet are linked together successively, electromagnet is connected with press button, and during the power supply access failure, blinker gets lodged on the air inlet of junction.
When the utility model uses, connect power supply, press the button, the wiping head under wiping in the chalk writing with the chalk dust dust catcher in, so no dust pollution almost in the classroom has improved teaching environment widely.
Accompanying drawing 1 is the utility model bullhead dust-free black board eraser schematic diagram.
Accompanying drawing 2 is the utility model Wiper plate cut-away view.
Accompanying drawing 3 is the utility model bullhead dust-free black board eraser circuit diagram.
Below in conjunction with accompanying drawing, provide the utility model embodiment.
As Fig. 1, dust catcher 9 can be selected the normal domestic use dust catcher of 800W for use, tube connector 5 is a flexible pipe, be connected between wiping 3 and the dust catcher 9, wiping 3 is by suction nozzle 10, be installed in the Wiper plate 11 of suction nozzle 10 opening parts, the press button 4 that is installed in suction nozzle 10 both sides is formed, Wiper plate 10 table and post felt 1, on Wiper plate 11 and felt 1, have some through hole 2 as air suction opening, when drawing two above tube connectors 5 from a dust catcher 9, junction at tube connector 5 and dust catcher 9 is provided with air door, and air door is by blinker 6, spring 7, electromagnet 8 connects successively and forms.Electromagnet 8 is connected with press button, and during the power supply access failure, blinker (6) gets lodged on the air inlet of junction, and behind the power connection, blinker (6) is inhaled to electromagnet (8).
Fig. 3 is a bullhead dust-free black board eraser circuit diagram, the motor 15 of dust catcher 9, meet supply voltage 220V after the high-pressure side of attaching plug 16, transformer 13, fuse 12 series connection, the low-pressure end of transformer 13 three loops in parallel, article one, be a contact of electromagnet 8 and press button 4, the second circuit be A.C. contactor 14 with another contact of press button 4 and press button 4 ' a contact, the 3rd loop be electromagnet 8 ' with press button 4 ' another loop.Transformer 13 is selected 12V, power switch 4,4 ' and be the double-contact formula.
Claims (2)
1, dust-free black board eraser is made up of wiping head (3), tube connector (5) and dust catcher (9), it is characterized in that: wiping head (3) is made up of suction nozzle (10) and the press button (4) that is installed in the Wiper plate (11) of suction nozzle (10) opening part and is installed in suction nozzle (10) both sides, Wiper plate (11) surface is fixed with cleaning piece (1), opens some through holes (2) as air suction opening on Wiper plate (11) and cleaning piece (1).
2, according to the described dust-free black board eraser of claim 1, it is characterized in that: air door, air door are set by blinker (6), spring (7) in tube connector (5) and dust catcher (9) junction, electromagnet (8) connects successively and forms, electromagnet (8) is connected with press button, during the power supply access failure, blinker (6) gets lodged on the air inlet of junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96240231 CN2285719Y (en) | 1996-09-18 | 1996-09-18 | Dustless blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96240231 CN2285719Y (en) | 1996-09-18 | 1996-09-18 | Dustless blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2285719Y true CN2285719Y (en) | 1998-07-08 |
Family
ID=33915024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96240231 Expired - Fee Related CN2285719Y (en) | 1996-09-18 | 1996-09-18 | Dustless blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2285719Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108928166A (en) * | 2018-09-01 | 2018-12-04 | 都函 | A kind of intelligent tutoring blackboard |
-
1996
- 1996-09-18 CN CN 96240231 patent/CN2285719Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108928166A (en) * | 2018-09-01 | 2018-12-04 | 都函 | A kind of intelligent tutoring blackboard |
| CN108928166B (en) * | 2018-09-01 | 2020-05-19 | 惠安县德虹数控设备有限公司 | Intelligent teaching blackboard |
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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 |