CN206870698U - A kind of Jing Yin dust-free black board eraser - Google Patents
A kind of Jing Yin dust-free black board eraser Download PDFInfo
- Publication number
- CN206870698U CN206870698U CN201720183285.6U CN201720183285U CN206870698U CN 206870698 U CN206870698 U CN 206870698U CN 201720183285 U CN201720183285 U CN 201720183285U CN 206870698 U CN206870698 U CN 206870698U
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- CN
- China
- Prior art keywords
- dust
- metallic plate
- blackboard eraser
- insulation spacer
- circuit
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- 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.)
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- Electrostatic Separation (AREA)
Abstract
A kind of Jing Yin dust-free black board eraser, including blackboard eraser housing, electrostatic dust absorption device and blackboard eraser cloth；The electrostatic dust absorption device includes battery, power switch, circuit for producing high voltage, multiple spray points and dust suction metallic plate, insulation spacer；The battery and circuit for producing high voltage are arranged at the enclosure interior, and the dust suction metallic plate is arranged at the surface of the housing, and the insulation spacer is arranged on the dust suction metallic plate；The blackboard eraser cloth is correspondingly arranged in surface of the insulation spacer away from the dust suction metallic plate, the multiple spray point is arranged between the blackboard eraser cloth and the insulation spacer, expose from the edge of the blackboard eraser cloth and the insulation spacer on the head of the multiple spray point, the negative pole of the output end of the circuit for producing high voltage connects the multiple spray point, and positive pole connects the dust suction metallic plate.By these design the utility model small volumes, in light weight, capacity usage ratio is high, and dust removal ability is strong.
Description
Technical field
The present invention relates to a kind of blackboard eraser, more particularly, to a kind of electrostatic dedusting blackboard eraser.
Background technology
When being erased the board in classroom, chalk dust is flown upward so that either teacher be still seated the front-seat classmate in classroom all can be by
Dynamic suction.These chalk dusts are felt bad when not only suction, can also influence the health of academics and students, and long-term suction may be used also
The diseases such as pneumoconiosis can be obtained, therefore how fast and effectively no longer chalk dust is flown upward during erasing the board, and is always individual make us
The problem of concern.
Existing dust absorption blackboard eraser efficiency of erasing is low on the market, and machine running noises are big, and complicated, price is held high
It is expensive, although the strong volume of some product suction, weight are excessive, the defects of easily electric shock in use, imitated in practice
Fruit is all unsatisfactory.
The content of the invention
The shortcomings that the purpose of this utility model is to overcome prior art, there is provided a kind of noise is low, small volume, it is in light weight,
Jing Yin dust-free black board eraser simple in construction, pick-up performance is good.
In order to solve the above technical problems, the utility model employs following technical measures：
A kind of Jing Yin dust-free black board eraser, including blackboard eraser housing, electrostatic dust absorption device and at least one blackboard eraser cloth；Institute
Stating electrostatic dust absorption device includes battery, power switch, circuit for producing high voltage, multiple spray points and dust suction metallic plate and blackboard eraser
The corresponding insulation spacer of cloth；The battery and circuit for producing high voltage are arranged at the enclosure interior, the dust suction metallic plate
The surface of the housing is arranged at, the insulation spacer is arranged on the dust suction metallic plate；The blackboard eraser cloth is correspondingly set
Be placed in surface of the insulation spacer away from the dust suction metallic plate, the multiple spray point be arranged at the blackboard eraser cloth with
Between the insulation spacer, the head of the multiple spray point is revealed from the edge of the blackboard eraser cloth and the insulation spacer
Go out, the battery connects the input of the circuit for producing high voltage by wire, and the output end of the circuit for producing high voltage is born
Pole connects the multiple spray point, and positive pole connects the dust suction metallic plate.
As a further improvement, the multiple spray point is in the blackboard eraser cloth and the sides aligned parallel of the insulation spacer
Set, the distance between the multiple spray point is 4~6mm, and the length that the head of the spray point is exposed is 2.5~3.5mm.
As a further improvement, the multiple spray point is arranged on rectangle conducting ring, the rectangle conducting ring
Size is corresponding with the insulation spacer with quantity.
As a further improvement, the insulation spacer number is two, described two insulation spacers are set in parallel in dust suction
Metallic plate, the insulation spacer are longitudinally disposed relative to dust suction metallic plate.
As a further improvement, the circuit for producing high voltage includes AC signal generating circuit, transformer and voltage multiplying rectifier
Circuit；The AC signal generating circuit is connected with the primary coil of the transformer, the voltage doubling rectifing circuit and the change
Depressor secondary coil is connected；The input is arranged at the AC signal generating circuit, and the output end is arranged at a times repoussage
Current circuit.
As a further improvement, the blackboard eraser housing is provided with key switch, the key switch fills with electrostatic precipitation
Connection is put, the key switch is used to control the electrostatic dust absorption device working condition.
As a further improvement, the blackboard eraser housing upper surface is provided with indicator lamp, the indicator lamp fills with electrostatic precipitation
Connection is put, the indicator lamp lights when the electrostatic dust absorption device is powered.
As a further improvement, the blackboard eraser housing side is provided with charge port, the battery, institute is inscribed in the charge port
State and be provided with dust cap on the outside of charge port.
As a further improvement, the external LED display of battery, for showing internal electric source reserves.
As a further improvement, the exhausted of open top is additionally provided between the dust suction metallic plate and institute's blackboard eraser housing
Emargination groove, the isolation recesses are embedded in the surface of the blackboard eraser housing, and the dust suction metallic plate is located at the isolation recesses
Bottom.
As a further improvement, also include the blackboard eraser holder opened wide at top, away from cassette bottom in the blackboard eraser holder
Half is highly provided with wire netting, be provided with the outside of the blackboard eraser holder can free taking and placing small brushes.
Compared with prior art, the utility model has advantages below：
1. by using circuit for producing high voltage booster tension so that the dust collection capacity of the utility model product is stronger and volume
It is small, it is in light weight.
2. the multiple spray point of the blackboard eraser cloth and the dust suction below spray point are exposed to by design
Metallic plate, after energization the multiple spray point and the dust suction metallic plate formed electric field more uniformly to the adsorption efficiency of dust more
It is high.
3. by designing power switch, showing that indicator lamp, the button multiple security of "on" position prevent user from touching
Electricity.
4. by designing charge port, electricity display screen causes this product to be reused multiple times, high financial profit.
Brief description of the drawings
Fig. 1 is a kind of overall structure diagram for Jing Yin dust-free black board eraser that the utility model embodiment provides.
Fig. 2 is a kind of component diagram for Jing Yin dust-free black board eraser that the utility model embodiment provides.
Fig. 3 is a kind of component diagram for Jing Yin dust-free black board eraser that the utility model embodiment provides.
Fig. 4 is a kind of exterior view for Jing Yin dust-free black board eraser that the utility model embodiment provides.
Main element symbol description
Blackboard eraser housing 1, blackboard eraser cloth 3, power switch 22, spray point 24, dust suction metallic plate 25, insulation spacer 26,
AC signal generating circuit 231, transformer 232, voltage doubling rectifing circuit 233；Primary coil 2321, secondary coil 2322, input
End 234, output end 235, key switch 11, indicator lamp 12, charge port 13, LED display 14, isolation recesses 4.
Embodiment
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
A kind of Jing Yin dust-free black board eraser as described in Figure, including blackboard eraser housing 1, electrostatic dust absorption device and at least one black
Blackboard eraser cloth 3；The electrostatic dust absorption device includes battery (not shown), power switch 22, circuit for producing high voltage, multiple
Spray point 24 and dust suction metallic plate 25, the insulation spacer 26 corresponding with blackboard eraser cloth 3；The spray point 24 be long needle-like or
The metallic conductor of elongated rod-shaped.
The battery and circuit for producing high voltage are arranged inside the blackboard eraser housing 1, and the dust suction metallic plate 25 is set
In the surface of the blackboard eraser housing 1.The insulation spacer 26 is arranged on the dust suction metallic plate 25；The blackboard wiper
Bar 3 is correspondingly arranged in surface of the insulation spacer 26 away from the dust suction metallic plate 25, and the multiple spray point 24 is arranged at
Between the blackboard eraser cloth 3 and the insulation spacer 26, the head of the multiple spray point 24 from the blackboard eraser cloth 3 and
Expose at the edge of the insulation spacer 26；The power switch 22 is arranged at the outer surface of blackboard eraser housing 1, for controlling
State the power supply power supply Push And Release of electrostatic dust absorption device.
The battery connects the input of the circuit for producing high voltage, the output end of the circuit for producing high voltage by wire
Negative pole connect the multiple spray point 24, positive pole connects the dust suction metallic plate 25.When circuit closes, spray point 24 is with inhaling
Dirt metallic plate 25 forms electric field, and spray point 24 discharges electronics, and the dust near spray point 24 will be powered, it is powered after powder
The dust suction metallic plate 25 that dirt is connected positive pole adsorbs, so as to reach pick-up performance.
For the blackboard eraser housing 1 using the insulating materials of lightweight, the dust suction metallic plate 25 can be set must be than corresponding
The blackboard eraser surface of shell is small, and certain distance is all left apart from the edge of housing, can also the blackboard eraser surface of shell be
Groove-like, the cell wall of surrounding is slightly higher, and medial launder bottom is a plane, and the dust suction metallic plate 25 is arranged at the bottom portion of groove.
In the present embodiment：The isolation recesses 5 of an open top are additionally provided between the dust suction metallic plate 25 and institute's blackboard eraser housing 1,
The isolation recesses 5 are embedded in the surface of the blackboard eraser housing 1, and the dust suction metallic plate 25 is located at the bottom of the isolation recesses 5
Portion.So design can effectively prevent the contact of user's finger and the dust suction metallic plate 25, cause to get an electric shock.
The multiple spray point 24 be able to can also be arranged in parallel with arranged in a crossed manner, in the present embodiment the multiple electric discharge
Pin 24 the blackboard eraser cloth 3 and the insulation spacer 26 sides aligned parallel set.It is be arranged in parallel in the multiple electric discharge
In the case of, the distance between the multiple spray point 24 is 4~6mm, and the length that the head of the spray point 24 is exposed is 2.5
~3.5mm is than convenient so that Electric Field Distribution is more uniform, and dust collection efficiency is higher, and energy is more fully utilized, in this reality
It is 5mm to apply the distance between multiple spray points 24 described in example, and the length that the head of the spray point 24 is exposed is 3mm.
The multiple spray point 24 can be connected one by one with cathode conductor, and the networking that can also be interweaved is with conduction, at this
Multiple spray points 24 are arranged on rectangle conducting ring 241 described in embodiment, and the conducting ring 241 is conducting metal wire rod
Material, is integrally formed, the size of the rectangle conducting ring 241 is corresponding with the insulation spacer 26 with quantity with spray point 24.
The setting of the quantity and orientation of the blackboard eraser cloth 3 and its corresponding insulation spacer 26 is unlimited, can be according to reality
Border situation setting, in the present embodiment, the number of insulation spacer 26 is two, and described two insulation spacers 26 are set in parallel in
Dust suction metallic plate 25, the insulation spacer 26 is longitudinally disposed relative to dust suction metallic plate 25, the length of the insulation spacer 26 with
The length of dust suction metallic plate 25 is identical.
The circuit for producing high voltage be used to amplifying voltage increase the multiple spray point 24 and the dust suction metallic plate 25 it
Between electric field, so as to increase absorption affinity of the dust suction metallic plate 25 to chalk dust.The high pressure produces electricity in the present embodiment
Road includes AC signal generating circuit 231, transformer 232 and voltage doubling rectifing circuit 233；The AC signal generating circuit 231
It is connected with the primary coil 2321 of the transformer 232, the voltage doubling rectifing circuit 233 and the secondary coil of transformer 232
2322 are connected；The input 234 is arranged at the AC signal generating circuit 231, and the output end 235 is arranged at multiplication of voltage
Rectification circuit 233.This high-tension circuit needs to design according to the utility model product, easy and effective, can be integrated in one block of electricity
On base board, small volume is in light weight.
Key switch 11 is additionally provided with the blackboard eraser housing 1, the key switch 11 is arranged at user's finger in institute
The origin of force of blackboard eraser housing 1 is stated, it is user-friendly.The key switch 11 is connected with electrostatic dust absorption device, described to press
Key switch 11 is used to control the electrostatic dust absorption device working condition.User pins the key switch 11 when erasing the board,
The electrostatic dust absorption device work, the chalk dust flown upward are attracted on the dust suction metallic plate 25, wipe rear blackboard eraser and put back to
Original position, unclamp the key switch 11.
The upper surface of blackboard eraser housing 1 is provided with indicator lamp 12, and the indicator lamp 12 is connected with electrostatic dust absorption device, described
Indicator lamp 12 lights when the electrostatic dust absorption device is powered.The indicator lamp 12 can play electric leakage reminding effect, work as use
When person not yet contacts blackboard eraser, indicator lamp 12 is in and lights state, then proves that the blackboard eraser is in leakage condition, care should be taken to make
With, or without using.
The side of blackboard eraser housing 1 is provided with charge port 13, and the battery, the charge port 13 is inscribed in the charge port 13
Outside is provided with dust cap (not depending on going out in figure).The upper surface of the blackboard eraser housing 1 is additionally provided with LED display 14, the battery
The external LED display 14, the LED display 14 are used to show internal electric source reserves.
The present embodiment also include top open wide blackboard eraser holder (not shown), the blackboard eraser holder 4 away from
Cassette bottom half is highly provided with wire netting (not shown), be provided with the outside of the blackboard eraser holder can free taking and placing it is small
Hairbrush (not shown).When user's blackboard wiping finishes, blackboard eraser is put back on the wire netting of the blackboard eraser holder,
Key switch 11 will be unclamped, the electrostatic dust absorption device is closed, and the dust suction metal is not with strong absorption affinity, then chalk dust exists
After electrostatic progressively disappears, the blackboard eraser holder bottom is fallen into through wire netting successively, after number certain using blackboard eraser,
The chalk dust on the dust suction metallic plate can be cleared up using small brushes.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements done etc., the utility model should be included in
Within the scope of protection.
Claims (10)
1. a kind of Jing Yin dust-free black board eraser, it is characterised in that including blackboard eraser housing, electrostatic dust absorption device and at least one blackboard
Wiper bar；The electrostatic dust absorption device include battery, power switch, circuit for producing high voltage, multiple spray points and dust suction metallic plate,
The insulation spacer corresponding with blackboard eraser cloth；The battery and circuit for producing high voltage are arranged at the enclosure interior, the suction
Dirt metallic plate is arranged at the surface of the housing, and the insulation spacer is arranged on the dust suction metallic plate；The blackboard wiper
Bar is correspondingly arranged in surface of the insulation spacer away from the dust suction metallic plate, and the multiple spray point is arranged at the blackboard
Between wiper bar and the insulation spacer, the head of the multiple spray point is from the blackboard eraser cloth and the insulation spacer
Edge exposes, and the battery connects the input of the circuit for producing high voltage, the output of the circuit for producing high voltage by wire
The negative pole at end connects the multiple spray point, and positive pole connects the dust suction metallic plate.
2. Jing Yin dust-free black board eraser according to claim 1, it is characterised in that：The multiple spray point is in the blackboard eraser
The sides aligned parallel of cloth and the insulation spacer is set, and the distance between the multiple spray point is 4~6mm, the spray point
The exposed length in head be 2.5~3.5mm.
3. Jing Yin dust-free black board eraser according to claim 2, it is characterised in that：The multiple spray point is arranged at rectangle
On conducting ring, the size of the rectangle conducting ring is corresponding with the insulation spacer with quantity.
4. Jing Yin dust-free black board eraser according to claim 1, it is characterised in that：The insulation spacer number is two, institute
State two insulation spacers and be set in parallel in dust suction metallic plate, the insulation spacer is longitudinally disposed relative to dust suction metallic plate.
5. Jing Yin dust-free black board eraser according to claim 1, it is characterised in that：The circuit for producing high voltage, which includes exchange, to be believed
Number generation circuit, transformer and voltage doubling rectifing circuit；The primary coil phase of the AC signal generating circuit and the transformer
Even, the voltage doubling rectifing circuit is connected with the transformer secondary coil；The input is arranged at the AC signal and produced
Circuit, the output end are arranged at voltage doubling rectifing circuit.
6. Jing Yin dust-free black board eraser according to claim 1, it is characterised in that：The blackboard eraser housing is opened provided with button
Close, the key switch is connected with electrostatic dust absorption device, and the key switch is used to control the electrostatic dust absorption device work shape
State.
7. Jing Yin dust-free black board eraser according to claim 1, it is characterised in that：The blackboard eraser housing upper surface, which is provided with, to be referred to
Show lamp, the indicator lamp is connected with electrostatic dust absorption device, and the indicator lamp lights when the electrostatic dust absorption device is powered.
8. Jing Yin dust-free black board eraser according to claim 1, it is characterised in that：The blackboard eraser housing side is provided with charging
Mouthful, the battery is inscribed in the charge port, and dust cap is provided with the outside of the charge port.
9. Jing Yin dust-free black board eraser according to claim 1, it is characterised in that：The external LED display of battery, is used for
Show internal electric source reserves.
10. Jing Yin dust-free black board eraser according to claim 1, it is characterised in that：The dust suction metallic plate and institute's blackboard eraser
The isolation recesses of an open top are additionally provided between housing, the isolation recesses are embedded in the surface of the blackboard eraser housing, institute
State the bottom that dust suction metallic plate is located at the isolation recesses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720183285.6U CN206870698U (en) | 2017-02-28 | 2017-02-28 | A kind of Jing Yin dust-free black board eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720183285.6U CN206870698U (en) | 2017-02-28 | 2017-02-28 | A kind of Jing Yin dust-free black board eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206870698U true CN206870698U (en) | 2018-01-12 |
Family
ID=61326971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720183285.6U Expired - Fee Related CN206870698U (en) | 2017-02-28 | 2017-02-28 | A kind of Jing Yin dust-free black board eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206870698U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944199A (en) * | 2018-08-27 | 2018-12-07 | 华北水利水电大学 | Electrostatic dedusting eraser |
| CN110143088A (en) * | 2019-05-21 | 2019-08-20 | 高杉逸 | A kind of novel blackboard eraser |
-
2017
- 2017-02-28 CN CN201720183285.6U patent/CN206870698U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944199A (en) * | 2018-08-27 | 2018-12-07 | 华北水利水电大学 | Electrostatic dedusting eraser |
| CN110143088A (en) * | 2019-05-21 | 2019-08-20 | 高杉逸 | A kind of novel blackboard eraser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20190228 |