CN104512175A - Whiteboard eraser - Google Patents

Abstract

The invention discloses a whiteboard eraser. The whiteboard eraser comprises a sponge mat, a shell, a driver, an injecting unit and a control unit, wherein the sponge mat is arranged on a surface of the shell; the shell has an injecting hole; the injecting unit is interconnected with the driver, and is driven by the driver to inject cleaning solution to the sponge mat; the driver is interconnected with the control unit; the control unit comprises a pressure sensor and a chip; the pressure sensor is arranged on the shell; the chip is electrically connected with the pressure sensor; the pressure sensor is used for sensing the pressure suffered by the whiteboard eraser in wiping and converting the pressure to a pressure signal to send to the chip; and the chip is used for processing the signal received by the pressure sensor so as to control the driver to drive a piston to move a corresponding distance so as to control if the injecting unit injects the cleaning solution.

Description

Whiteboard eraser

Technical field

The present invention relates to a kind of can the whiteboard eraser of automatic spraying cleaning agent.

Background technology

Adopt chalk to write at blackboard upper plate in conventional teaching, with dust from flying during blackboard eraser wiping, pollute teaching environment, affect the healthy of Faculty and Students simultaneously.Now adopt white board marker writing on the blackboard to instead of chalk teaching, instead of blackboard with blank, the thing followed is the whiteboard eraser of writing on wiping blank simultaneously.

Common whiteboard eraser generally adopts velveteen fabric to make, and blank is white organic plates, phase before use, it is better that it cleans effect, but along with using the increase of duration, it cleans decreased effectiveness, and whiteboard eraser wiping is not totally, the problem such as not thorough is following, and blank also can become stains by the impact of whiteboard eraser spreads all over.So use whiteboard eraser to coordinate cleaning agent to carry out wiping blank, general operation is that cleaning agent is sprayed at blank, and then uses whiteboard eraser to carry out wiping, and wiping like this is respond well.But because whiteboard eraser and cleaning agent separate to use, therefore operation is more loaded down with trivial details, and easily causes cleaning agent to waste.

Summary of the invention

In view of this, the invention provides a kind of can the whiteboard eraser of automatic coating cleaning agent.

A kind of whiteboard eraser, it comprises: foam-rubber cushion, housing, driver, injection unit and control unit, described foam-rubber cushion is arranged at a surface of housing, described housing has spray-hole, described injection unit and described driver are interconnected, and cleaning solution is sprayed to foam-rubber cushion under the driving of driver, described driver and described control unit are interconnected, described control unit comprises pressure sensor and chip, described pressure sensor is arranged at described housing, described chip is electrically connected with described pressure sensor, the pressure that when described pressure sensor is for sensing wiping, whiteboard eraser is subject to also is converted into pressure signal and is transferred to chip, described chip moves corresponding distance for the treatment of the signal control and drive system driven plunger that pressure sensor receives, whether cleaning agent is sprayed to control injection unit.

Compared to prior art, the invention provides a kind of can the whiteboard eraser of automatic coating cleaning agent, automatically cleaning agent is sprayed during wiping blank, and by pressure size that pressure sensor senses, the push-in stroke of the driving of control chip control piston and then control piston, controls the consumption of cleaning agent with this, reach the object of saving cleaning agent, and wiping effect is good, operates also more convenient.

Accompanying drawing explanation

Fig. 1 is the top view of the whiteboard eraser housing first surface that the embodiment of the present invention provides.

Fig. 2 is the schematic diagram of each component distribution in embodiment of the present invention whiteboard eraser housing.

Fig. 3 is the top view in Fig. 1 of the present invention after whiteboard eraser installation foam-rubber cushion.

Main element symbol description

Whiteboard eraser	100
		Foam-rubber cushion	110
Housing	120
		First surface	121
Spray-hole	123
		Groove	124
Driver	130
		Injection unit	140
Container	141
		Jet blower	142
Piston	143
		Piston rod	1431
Seal head	1432
		Control unit	150
Chip	151
		Pressure sensor	152

Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.

Detailed description of the invention

Refer to Fig. 1 to Fig. 3, the embodiment of the present invention provides a kind of whiteboard eraser 100, and it comprises: foam-rubber cushion 110, housing 120, driver 130, injection unit 140 and control unit 150.

Described foam-rubber cushion 110 is arranged at the surface of described housing 120.Refer to Fig. 1, the shape of described housing 120 is cuboid, and described housing 120 has relative first surface 121 and second surface (not shown).In the present embodiment, described first surface 121 center is formed with groove 124, described groove 124 has the bottom surface 1241 parallel with first surface 121, described bottom surface 1241 offers a spray-hole 123, described spray-hole 123 is a circular hole, and the groove 124 of described first surface 121 is for accommodating foam-rubber cushion 110.

Described injection unit 140 comprises container 141, jet blower 142 and piston 143, and described container 141 is for containing cleaning agent.In the present embodiment, described container 141 is tubular structure.Described piston 143 is placed in described container 141.Described jet blower 142 is a thin tube-like cylinder, be interconnected with container 141, and described jet blower 142 extends to the spray-hole 123 on the first surface 121 of described housing 120, the cross sectional radius of described jet blower 142 is identical with the cross sectional radius of spray-hole 123, and described cleaning agent sprays from described jet blower 142.Described piston 143 comprises piston rod 1431 and seal head 1432, and described seal head 1432 is fixedly arranged on described piston rod 1431.Described piston rod 1431 is cylindric and cross sectional radius is slightly less than the cross sectional radius of described container 141, and described seal head 1432 is cylindric and cross sectional radius is identical with the cross sectional radius of described container 141 and closely cooperate.Described injection unit 140 is interconnected with described driver 130, and sprays cleaning solution by spray-hole 123 to foam-rubber cushion 110 under the driving of driver 130.

Described driver 130 is for driving described piston 143, and described piston 143 for pushing the cleaning agent in container 141, and makes cleaning agent spray from the jet blower 142 of described container 141.

Described driver 130 is interconnected with described control unit 150, for the signal sent according to described control unit 150, drives described piston 143 to move.

It should be noted that, refer to Fig. 3, described jet blower 142 blowing perforation 123 extends and contacts with described foam-rubber cushion 110.

Described control unit 150 comprises chip 151 and pressure sensor 152, and described pressure sensor 152 is arranged at the bottom surface 1241 of described groove 124 and adjacent with foam-rubber cushion 110.Described chip 151 is connected with described pressure sensor 152 signal, the pressure signal that when described pressure sensor 152 is for sensing wiping, whiteboard eraser 100 is subject to also is transferred to chip 151, described chip 151 is electrically connected with described piston actuated 144, and described chip 151 moves corresponding distance for the treatment of signal control and drive system 130 driven plunger that pressure sensor 152 receives.

It should be noted that, when the hand-held whiteboard eraser 100 wiping blank of user, because staff gives whiteboard eraser certain pressure, according to Newton's third law: the relation of active force and reaction force, blank gives foam-rubber cushion 110 on whiteboard eraser 100 identical pressure, namely senses this force value by pressure sensor 152.In the present embodiment, described pressure sensor 152 is provided with a threshold value, and according to the pressure that actual staff produces, the threshold value of described pressure sensor 152 pressure sensor should between 0 ~ 2000N.In the present embodiment, setting threshold value is 400N, then when the pressure of pressing whiteboard eraser sends the instruction of pushing piston 143 to piston actuated 144 more than just making chip 151 during 400N.And when the force value of pressing whiteboard eraser is lower than 400N, then chip 151 can not be made to produce the instruction of pushing piston 143.

Be appreciated that the cleaning agent in the present embodiment is alcohol, and described foam-rubber cushion 110 has good permeability, alcohol can penetrate into foam-rubber cushion 110 everywhere fast.

The using method of the present embodiment whiteboard eraser 100 is as follows: provide a blank, blank has many traces, and before the use, user needs to inject cleaning agent in the container 141 of whiteboard eraser.User uses the trace on blank described in the wiping of described whiteboard eraser 100, pressing whiteboard eraser 100 and pressing pressure more than 400N, then pressure sensor 152 obtains the signal that pressure exceedes threshold value, and described signal is sent to chip 151, the instruction of pushing piston 143 is sent after described chip 151 processes, and be conveyed to piston actuated 144, piston actuated 144 receives instruction and pushing piston 143, cleaning agent blowing nozzle 142 in container 141 is penetrated, namely spray from spray-hole 123 place of described housing 120 first surface 121 center, infiltrate described foam-rubber cushion 110, and then utilize cleaning agent by the trace wiped clean on blank.

Compared to prior art, the present embodiment provide a kind of can the whiteboard eraser 100 of automatic coating cleaning agent, automatically cleaning agent can be sprayed during wiping blank, and by pressure size that pressure sensor 152 senses, control chip 151 control piston drives the push-in stroke of 144 and then control piston 143, controls the consumption of cleaning agent with this, reaches the object of saving cleaning agent, and wiping effect is good, operates also more convenient.

In addition, for the person of ordinary skill of the art, other various corresponding change can be made according to technical scheme of the present invention and technical conceive, and all these changes all should belong to the protection domain of the claims in the present invention.

Claims (9)

1. a whiteboard eraser, it comprises: foam-rubber cushion, housing, driver, injection unit and control unit, described foam-rubber cushion is arranged at a surface of housing, described housing has spray-hole, described injection unit and described driver are interconnected, and cleaning solution is sprayed by spray-hole to foam-rubber cushion under the driving of driver, described driver and described control unit are interconnected, described control unit comprises pressure sensor and chip, described pressure sensor is arranged at described housing, described chip is electrically connected with described pressure sensor, the pressure that when described pressure sensor is for sensing wiping, whiteboard eraser is subject to also is converted into pressure signal and is transferred to chip, described chip moves corresponding distance for the treatment of the signal control and drive system driven plunger that pressure sensor receives, whether cleaning agent is sprayed to control injection unit.

2. whiteboard eraser as claimed in claim 1, it is characterized in that, described injection unit comprises container, jet blower and piston, described container is used for containing cleaning agent, described jet blower and described container are interconnected, and described jet blower extends to described spray-hole, and described piston is placed in described container, for pushing cleaning agent, described driver moves for driving described piston.

3. whiteboard eraser as claimed in claim 2, it is characterized in that, described jet blower is a thin tube-like cylinder, and the cross sectional radius of described jet blower is identical with the cross sectional radius of spray-hole, and described jet blower extends from described spray-hole.

4. whiteboard eraser as claimed in claim 2, it is characterized in that, described piston comprises piston rod and seal head, and described seal head is fixedly arranged on described piston rod.

5. whiteboard eraser as claimed in claim 4, is characterized in that, piston rod is cylindric and cross sectional radius is slightly less than the cross sectional radius of described container, and described seal head is cylindric and cross sectional radius is identical with the cross sectional radius of described container and closely cooperate.

6. whiteboard eraser as claimed in claim 1, it is characterized in that, the shape of described housing is cuboid, and described housing comprises first surface, and described first surface has groove, and described groove is for accommodating foam-rubber cushion.

7. whiteboard eraser as claimed in claim 6, it is characterized in that, described groove has the bottom surface parallel with first surface, and described spray-hole can be located at described bottom surface.

8. whiteboard eraser as claimed in claim 7, is characterized in that, described pressure sensor is arranged at the bottom surface of described groove and adjacent with foam-rubber cushion.

9. whiteboard eraser as claimed in claim 1, it is characterized in that, pressure sensor is provided with a threshold value, when the pressure pressing whiteboard eraser exceedes described threshold value, makes chip send the instruction of pushing piston to piston actuated; When the force value of pressing whiteboard eraser is lower than described threshold value, then chip can not be made to produce the instruction of pushing piston.