CN202862950U

CN202862950U - Electrostatic dust absorbing eraser

Info

Publication number: CN202862950U
Application number: CN 201220466923
Authority: CN
Inventors: 许征利
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-05
Filing date: 2012-09-05
Publication date: 2013-04-10
Anticipated expiration: 2022-09-05

Abstract

The utility model discloses an electrostatic dust absorbing eraser which is mainly composed of a brush body (1) and a brush holder (2). The brush body (1) comprises a brush head (4), a dust absorbing plate (6) and brush bristles (9), wherein the dust absorbing plate (6) made of a steel plate is beset at the bottom of the brush head (4), and an electrostatic power grid (5) made of a metallic conductor is fixedly installed at the middle and lower portion of the brush bristles (9). The brush holder (2) and the brush body (1) are in a separated structure, a dust hole (11) is arranged at the front half portion of the brush holder (2), and an electrical store (10) is arranged at the back half portion of the brush holder (2). Inside the electrical store (10), a vibrating coil (13) is vertically installed at the front portion corresponding to the brush head (4) installation portion. The electrostatic dust absorbing eraser has the advantages of being simple in structure, convenient to use, noiseless, efficient in dust absorption, flexible in erasing, and capable of preserving the blackboard structure and writing habit.

Description

A kind of electrostatic dust collecting blackboard eraser

Technical field

The utility model belongs to a kind of culture and education apparatus field, relates to a kind of blackboard eraser, particularly relates to a kind of electrostatic dust collecting blackboard eraser.

Background technology

Ordinary blackboard eraser commonly used, easy economy, but dust from flying when using, very unhygienic, carry out in the process of wiping chalk dust, chalk dust can descend slowly and lightly to the classroom everywhere, have a strong impact on environmental sanitation, along with teacher, classmate's breathing, those swim in the respiratory system that airborne chalk dust can enter teacher, student, and the healthy of teachers and students damaged simultaneously.

Some present ways are the blackboard erasers that adopt with the motor dust catcher, although this blackboard eraser can dust suction, the notice that the noise that produces when using can disperse teachers and students is so not too suit to use in the classroom.What also have utilizes the principles such as magnetic force, and whole blackboard is reequiped, and this blackboard eraser can automatically be wiped the word on the blackboard, and can sponge the chalk dust of kicking up when erasing the board.But this blackboard eraser implements and can run into the bad shortcoming of flexibility, as in teaching process, need to keep a part of content on the blackboard, this blackboard eraser just can not be realized, it can not avoid the content that this section needs reservation flexibly, and its sphere of action is whole blackboards, rather than part, also more complicated of structure should not be promoted the use of besides.

Summary of the invention

The purpose of this utility model will provide a kind of simple in structure, easy to use, noiseless, the efficient erasable flexibly a kind of electrostatic dust collecting blackboard eraser of dust suction exactly.

For achieving the above object, the utility model mainly is comprised of brush body (1) and brush holder (2), wherein the brush holder (3) of brush body (1) and brush (4) two parts main body adopt engineering plastics or resin or bakelite insulating materials casting, inlay the dust-catching board (6) that steel plate is made in the bottom of brush (4), and brush palm fibre (9), be installed with the static net (5) that metallic conductor is made in the position, middle and lower part of brush palm fibre (9), static net (5) and dust-catching board (6) mutually insulated, and keep uniform insulation distance; Brush wiring board (7) is installed in inside at brush holder (3), the negative electrode output of brush wiring board (7) connects static net (5) with the High-Voltage Insulation electric wire, anode output connects dust-catching board (6), the anodal series connection of mains side press button (8), then be connected respectively on the positive pole and negative pole of the charging socket (15 ') that is fixed on brush holder (3) bottom with negative pole, rechargeable battery (E) and voltage doubling rectifing circuit are installed on the brush wiring board (7); The outstanding inboard that is installed on brush holder (3) of press button (8) is so that operation; Brush holder (2) is Split type structure with brush body (1), the first half of brush holder (2) is ash-pit (11), latter half is electrical store (10), the anterior corresponding position at right angle setting vibrator coil (13) of placing brush (4) in electrical store (10), sidewall at corresponding brush holder (3) placement location is installed fine motion type power switch (14), brush holder wiring board (12) is installed in the centre position, the power input series-connection power supplies switch (14) of brush holder wiring board (12) also connects attaching plug (16) by cable, the charging output loop of brush holder wiring board (12) connects charging plug (15), and the time relay (KT) time-delay break contact connects vibrator coil (13).The utility model will be further described below in conjunction with accompanying drawing.

Description of drawings

Accompanying drawing 1 is structural profile schematic diagram of the present utility model.

Accompanying drawing 2 is electrical schematic of the present utility model.

1: brush body, 2: brush holder, 3: brush holder, 4: brush, 5: static net, 6: dust-catching board, 7: brush wiring board, 8: press button, 9: the brush palm fibre, 10: electrical store, 11: ash-pit, 12: the brush holder wiring board, 13: vibrator coil, 14: power switch, 15: charging plug, 15 ': charging socket, 16: attaching plug, KT: time-delay relay, E: rechargeable battery, T: transformer, R1～R6: resistance, VD1～VD12: diode, C1～C13: electric capacity, VS1～VS2: controllable silicon, VT1～VT2: IGCT.

The specific embodiment

The utility model mainly is comprised of brush body (1) and brush holder (2), wherein the brush holder (3) of brush body (1) and brush (4) two parts main body adopt engineering plastics or the disposable casting of the insulating materials such as resin or bakelite, inlay the dust-catching board (6) that steel plate is made in the bottom of brush (4), and brush palm fibre (9), be installed with the static net (5) that metallic conductor is made in the position, middle and lower part of brush palm fibre (9), static net (5) and dust-catching board (6) mutually insulated, and keep uniform insulation distance; Brush wiring board (7) is installed in inside at brush holder (3), the negative electrode output of brush wiring board (7) connects static net (5) with the High-Voltage Insulation electric wire, anode output connects dust-catching board (6), the anodal series connection of mains side press button (8), then be connected respectively on the positive pole and negative pole of the charging socket (15 ') that is fixed on brush holder (3) bottom with negative pole, rechargeable battery (E) and voltage doubling rectifing circuit are installed on the brush wiring board (7); The outstanding inboard that is installed on brush holder (3) of press button (8) is so that operation; Brush holder (2) is Split type structure with brush body (1), the first half of brush holder (2) is ash-pit (11), latter half is electrical store (10), the anterior corresponding position at right angle setting vibrator coil (13) of placing brush (4) in electrical store (10), sidewall at corresponding brush holder (3) placement location is installed fine motion type power switch (14), brush holder wiring board (12) is installed in the centre position, the power input series-connection power supplies switch (14) of brush holder wiring board (12) also connects attaching plug (16) by cable, the charging output loop of brush holder wiring board (12) connects charging plug (15), and the time relay (KT) time-delay break contact connects vibrator coil (13).

Hold the brush holder (3) of brush body (1) during use, mention brush body (1) and in blackboard wiping, press the button switch (8), at this moment, the electric energy of rechargeable battery (E) begins output, by electric capacity (C3, C4), resistance (R6) and IGCT (VT1, VT2) effect shakes high frequency voltage, after boosting by transformer (T), pass through again electric capacity (C5～C13) and diode (VD4～VD12) carry out many voltage multiplying rectifiers to form high voltage direct currents, and outputing on the static net (5) and dust-catching board (6) of brush (4) part.In the process of brandishing brush body (1) blackboard wiping, wipe lower chalk powder under the effect of static net (5) with negative electrical charge because dust-catching board (6) is with positive electricity, the dust with negative electrical charge is attracted on the dust-catching board (6) at this moment; The attaching plug (16) of brush holder (2) is connected civil power; Behind the complete blackboard of wiping, brush body (1) is put back on the brush holder (2), release button switch (8), dust-catching board (6) dead electricity, absorption dust in the above comes off naturally, simultaneously, brush holder (3) is pressed onto on the power switch (14) of brush holder (2), the power turn-on of brush holder wiring board (12), time-delay relay (KT) coil gets electric, vibrator coil (13) gets electric work by the time-delay break contact of time-delay relay (KT), this moment action of alternating magnetic field on brush body (1) steel dust-catching board (6) and produce the power frequency vibrations, will remain in dust on dust-catching board (6) and the brush palm fibre (9) shakes and drops in the ash-pit (11); After time-delay relay (KT) delay working was finished, its time-delay break contact disconnected, vibrator coil (13) dead electricity, and brush body (1) stops vibrations; Its timing closing contact conducting, by diode (VD1, VD2) rectification, obtain DC voltage after electric capacity (C1) filtering, carry out step-down through resistance (R1) again, controllable silicon (VS2) is through resistance (R2) and diode (VD3) conducting, power supply charges to rechargeable battery (E) through charging plug (15) and charging socket (15 '), if charging finishes, electric capacity (C2) charging when namely arriving the current potential of adjustable resistance (R5) setting, it is that controllable silicon (VS 1) provides the gate pole triggering signal, at this moment controllable silicon (VS1) conducting, and controllable silicon (VS2) cut-off stops to be rechargeable battery (E) charging.Use and so forth, after the dust collection in the ash-pit (11) is full, unified recycling.

Claims

1. an electrostatic dust collecting blackboard eraser mainly is comprised of brush body (1) and brush holder (2), it is characterized in that brush holder (2) and brush body (1) are Split type structure.

2. a kind of electrostatic dust collecting blackboard eraser according to claim 1, the brush holder (3) of brush body (1) and brush (4) two parts main body adopt engineering plastics or resin or bakelite insulating materials casting, inlay the dust-catching board (6) that steel plate is made in the bottom of brush (4), and brush palm fibre (9), be installed with the static net (5) that metallic conductor is made in the position, middle and lower part of brush palm fibre (9), static net (5) and dust-catching board (6) mutually insulated, and keep uniform insulation distance.

3. a kind of electrostatic dust collecting blackboard eraser according to claim 2, its feature is again in the inside of brush holder (3) brush wiring board (7) to be installed, the negative electrode output of brush wiring board (7) connects static net (5) with the High-Voltage Insulation electric wire, anode output connects dust-catching board (6), the anodal series connection of mains side press button (8).

4. a kind of electrostatic dust collecting blackboard eraser according to claim 1, the first half that is further characterized in that brush holder (2) is ash-pit (11), latter half is electrical store (10), the anterior corresponding position at right angle setting vibrator coil (13) of placing brush (4) in electrical store (10).