CN112793344A

CN112793344A - Electric dust-absorbing blackboard eraser

Info

Publication number: CN112793344A
Application number: CN202110347059.8A
Authority: CN
Inventors: 曹明
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-05-14

Abstract

The invention discloses an electric dust-absorption blackboard eraser, and relates to the field of daily teaching aids. The invention consists of a wiping body (1), a lining plate (2), a shell (3), a dust filtering net (4), a dust absorption fan (5) and a power module (6). The wiping body is provided with a groove, the retention area plays a wiping role, and the groove area is used for containing and conveying sucked powder; the check valve is arranged in the through hole of the lining plate, so that chalk powder is prevented from being poured out when the blackboard eraser is placed. The invention solves the problems of dust flying and unclean wiping when people wipe the blackboard, and the appearance size is similar to that of the traditional blackboard eraser, and the blackboard eraser has independent functions and is easy to use.

Description

Electric dust-absorbing blackboard eraser

Technical Field

The invention relates to the field of daily teaching aids, in particular to an electric dust-absorption blackboard eraser.

Background

The traditional blackboard eraser only uses a manual wiping method to remove writing on the blackboard, and a part of dust can be scattered into the air to cause respiratory tract and lung diseases of people; and a part of dust is adsorbed on the blackboard due to the friction and static electricity, so that the dust is difficult to clean.

Although the blackboard eraser can eliminate dust flying and electrostatic adsorption by wetting with water, the blackboard eraser needs to be washed in time, otherwise, stains are left on the blackboard, and normal teaching activities are not facilitated.

In the prior electric blackboard eraser technical schemes, some electric blackboard erasers need to be improved, and the current teaching hardware cannot be fully utilized; some are complicated in structure and inconvenient to operate.

Disclosure of Invention

The invention aims to solve the technical problem of providing an electric dust-absorbing blackboard eraser aiming at the defects of the prior art.

In order to realize the technical purpose, the scheme of the invention is as follows: the electric dust-absorbing blackboard eraser consists of an erasing body, a lining plate, a shell, a dust filtering net, a dust-absorbing fan and a power module; the dust filtering net, the dust absorption fan and the power supply module are arranged in the shell; the wiping surface is provided with a slotted wiping body and a lining plate with a check valve arranged in a through hole, the lining plate is sequentially arranged on the working surface of the shell, and the wiping body can be replaced; the combination of them has the functions of wiping blackboard and absorbing dust.

In a preferred scheme, the external dimension of the shell refers to a traditional blackboard eraser.

In a preferred embodiment, the wiping body is composed of a support and a fluff body in layers.

In a preferred embodiment, the slotted port on the wiper body is closed.

The invention has the beneficial effects that: firstly, the problems of powder adsorbing the blackboard and flying to the air are greatly reduced; secondly, no stain is left on the blackboard; thirdly, the functions are independent, the existing blackboard hardware is not required to be modified, the structure is simple, the operation is convenient, and the using method is completely the same as that of the traditional blackboard eraser.

Drawings

FIG. 1 is a schematic view of the combined structure of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is a schematic view of a wiping body according to the invention;

FIG. 4 is a schematic view of the construction of the liner of the present invention;

in the figure, 1, a wiping body, 2, a lining plate, 3, a shell, 4, a dust filtering net, 5, a dust suction fan, 6, a power module, 11, a support body, 12, a fluff body, 13, a suction hole, 14, a groove, 21, a check valve, 31, a box cover, 32, an exhaust hole, 33, a charging terminal, 34 and a button switch.

Detailed Description

The electric dust collection blackboard eraser of the embodiment, as shown in fig. 1 and 2, comprises the following components: the cleaning device comprises a cleaning body 1, a lining plate 2, a shell 3, a dust filtering net 4, a dust absorption fan 5 and a power module 6. Wherein, the dust filter 4, the dust absorption fan 5 and the power module 6 are arranged in the shell 3; the wiping body 1 with a slot 14 on the wiping surface and the lining plate 2 with a check valve 21 on the through hole are sequentially arranged on the working surface of the shell 3, and the wiping body 1 can be replaced; the side of the housing 3 is provided with a charging terminal 33, a push switch 34, an exhaust hole 32, and a cover 31 for emptying chalk powder.

First, the dimensions of the conventional blackboard eraser on the market are investigated for reference. The outer length of the traditional blackboard eraser shell is 10.0-16.0 cm, the outer width is 5.0-6.0 cm, and the outer height is 1.5-4.0 cm; the thickness of the shell material is 1-2 mm; the height of the exposed part of the wiping body is 0.8-1.5 cm.

In the embodiment, according to the type selection of the dust absorption fan 5 and the power module 6, the outer length of the shell 3 of the electric dust absorption blackboard eraser is 15.2cm, the outer width is 5.2cm, and the outer height is 4.2 cm; the thickness of the shell 3 material is 1.5 mm; the height of the exposed part of the wiping body 1 was 1.0 cm.

Secondly, the wiping body 1 is composed of a supporting body 11 and a soft hair body 12 in a layered manner, so that the wiping body 1 can be replaced and the wiping process is ensured not to be deformed. The wiping surface of the wiping body 1 is provided with a plurality of slots 14, and a reserved area plays a wiping role and is used for containing and conveying sucked powder; the port of the slot 14 of the wiping body 1 is closed to uniformly suck air from the wiping surface, so that low-resistance air is prevented from being sucked from the port, and the dust suction efficiency is improved.

In the embodiment, the structure length of the wiping body 1 is 15.0cm, the width is 5.0cm, and the thickness is 1.5cm, which are determined by the size and the material thickness of the shell 3 of the electric dust collection blackboard eraser. Wherein the height of the support body 11 is 1.2cm, and the height of the soft hair body 12 is 0.3 cm. After the housing 3 was mounted, the height of the buried portion was 0.75cm, and the height of the exposed portion was 0.75 cm.

In order to ensure the structural strength and the dust suction effect of the wiping body 1, the width of the reserved area is 8mm, the width of the groove 14 is 2.5mm, and the depth of the groove 14 is 6 mm. The slit 14 is opened at the middle position in the longitudinal direction by a width of 6mm, and a through hole is opened at the center position of the penetration as a vent hole 13 with a diameter of 6 mm.

Thirdly, a check valve 21 is arranged on the through hole of the lining plate 2 and is used for absorbing the chalk powder in the groove 14 of the wiping body 1 into the shell 3 for storage, and the chalk powder can be prevented from being poured out when the blackboard eraser is placed.

In this embodiment, the length and width of the lining plate 2 are equal to those of the wiping body 1, the thickness is 1.5mm, the through hole of the lining plate 2 is overlapped with the position of the air suction hole 13 of the wiping body 1, and the inner diameter of the through hole of the lining plate 2 is 7.1mm according to the model selection HX-0157 of the check valve 21.

Finally, the dust filtering net 4 in the shell 3 is used for isolating two spaces, one space is used for storing dust, and the other space is used for placing a dust collection fan 5 and a power supply module 6.

The housing 3 is provided with a charging terminal 33 and a push switch 34.

The casing 3 on be equipped with case lid 31, the convenient dust of regularly saving is cleared up.

The housing 3 is provided with an air outlet 32 for discharging air in the housing 3.

When a person wipes a blackboard, the button switch 34 is pressed simultaneously, the dust absorption fan 5 rotates to discharge air in the shell 3, under the action of atmospheric pressure, air carrying dust enters the shell 3 through the groove 14 of the wiping body 1 and the check valve 21 on the lining plate 2, the dust filtering net 4 filters out the dust, the dust is left in the shell 3, the air is discharged out of the shell 3, and the problems that the powder adsorbs the blackboard and is scattered in the air are solved.

The electric dust-absorbing blackboard eraser is similar to a traditional blackboard eraser in overall dimension and independent in function. The blackboard eraser does not require the reconstruction of the existing blackboard hardware and the change of the blackboard erasing habit of personnel, and the using method is completely the same as that of the traditional blackboard eraser.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention shall be subject to the technical features described in the claims. Any improvements, modifications and substitutions of the above embodiments according to the technical spirit of the present invention should be included in the scope of the technical solution of the present invention.

Claims

1. The utility model provides an electric dust-absorbing blackboard eraser, includes the cleaning body (1), welt (2), casing (3), its characterized in that: the cleaning surface of the cleaning body is provided with a slot (14), the through hole of the lining plate is provided with a check valve (21), and the cleaning body and the lining plate are sequentially arranged on the working surface of the shell.

2. The electric dust-absorbing blackboard eraser according to claim 1, wherein: the wiping body is formed by layering a support body (11) and a fluff body (12).

3. The electric dust-absorbing blackboard eraser according to claim 1, wherein: the slotted port on the wiping body is closed.