CN2743148Y - Environmental protection dust less blackboard eraser - Google Patents

Abstract

An environment-friendly dust-free blackboard eraser, comprising a blackboard eraser body and bristles, wherein the bristle is arranged on the front of the blackboard eraser body, wherein the blackboard eraser body has a hollow inner cavity, and the inner cavity is provided with a better water storage performance The sponge body is provided with a water injection port on the side of the blackboard eraser body, and a steel wire mesh for fixing the bristles is provided on the contact surface between the blackboard eraser body and the bristles. Compared with the prior art, the utility model has changed the working principle of the traditional blackboard wipe dry wipe to absorb dust, cleverly mixed with water, wipe the blackboard clean, clear, and will not bring dust, not only to ensure The black and white contrast of the blackboard is improved, and the damage to human health caused by the rubbed chalk dust is avoided, which greatly improves the teaching effect of the teacher and the learning efficiency of the students.

Description

Environmentally friendly dust-free blackboard eraser

technical field

The utility model relates to a blackboard eraser, in particular to an environment-friendly dust-free blackboard eraser, which is an improvement on the existing blackboard eraser structure, belongs to the category of cultural and educational supplies, and is suitable for teachers to use in classroom teaching.

Background technique

At present, the blackboard erasers used by people are all common styles: a piece of bristle is inlaid on a rectangular wooden board. When wiping the blackboard, chalk dust flies everywhere. Especially blackboard erasers are all dry erasers. The blackboard is up. At this time, the blackboard will be wiped with white powder marks by the blackboard eraser, resulting in insufficient black and white contrast of the blackboard, and the writing on the blackboard written by the teacher is not easily recognized by the students, which not only affects the overall appearance of the blackboard, but also affects the learning effect of students. Moreover, the chalk dust rubbed off directly enters the oral cavity, causing damage to the health of teachers and students. Although there have been many inventions and creations aimed at blackboard erasers in recent years, they are all aimed at recycling chalk dust. No technical solutions have been seen to solve the problem of dry erasing blackboard erasers. In teaching practice, only wet rags containing water are used instead of blackboard erasers. Go wipe the blackboard.

Utility model content

The purpose of the utility model is to overcome the above-mentioned shortcomings in the prior art, and provide an environment-friendly dust-free blackboard eraser by improving the structure of the existing blackboard eraser. This new type of blackboard eraser has changed the working principle of the traditional blackboard eraser dry wipe to absorb dust. It is cleverly mixed with water. Using it to wipe the blackboard is clean and clear without bringing dust, which not only ensures the blackboard The black-and-white contrast can also avoid the damage caused by the rubbed chalk dust to people's health, which greatly improves the teaching effect of teachers and the learning efficiency of students.

The environment-friendly dust-free blackboard eraser provided by the utility model includes a blackboard eraser body and bristles, wherein the bristles are arranged on the front of the blackboard eraser body, and its characteristic is that the blackboard eraser body has a hollow inner cavity , the inner cavity is provided with a sponge body with good water storage performance, a water injection port is provided on the side of the blackboard eraser body, and a fixed steel wire mesh is arranged on the contact surface between the blackboard eraser body and the bristles. It does not affect the water leakage of the sponge body in the inner cavity of the blackboard eraser, and can firmly fix the bristles on the blackboard eraser body, increasing the overall pressure resistance of the blackboard eraser.

In order to better realize the purpose of the utility model, the bristles are made of materials with certain water permeability and good wear resistance, such as sponge products.

The blackboard eraser provided by the utility model can be made of plastics or wood materials. If the blackboard eraser is assembled, a waterproof sealing device shall be provided at the connection of each component.

Compared with the prior art, the beneficial effect of the utility model is that: when the blackboard is wiped, it is clean and clear without bringing up dust, which not only ensures the black and white contrast of the blackboard, but also avoids the chalk dust rubbed off from being harmful to people. The damage caused by the physical health of the teacher greatly improves the teaching effect of the teacher and the learning efficiency of the students.

Description of drawings

Accompanying drawing is the appearance schematic diagram of an embodiment that the utility model provides.

Labels in the figure: 1. water injection port, 2. blackboard eraser body, 3. hair wiper.

Detailed ways

As shown in the accompanying drawings, this environment-friendly dust-free blackboard eraser includes a blackboard eraser body 2 and a bristle 3, wherein the bristle 3 is arranged on the front of the blackboard eraser body 2, and the blackboard eraser body 2 has a hollow inner cavity. A sponge body with better water storage performance is arranged in the inner cavity, a water injection port 3 is provided on the side of the blackboard eraser body 2, and a steel wire mesh for fixing the bristles 3 is arranged on the contact surface between the blackboard eraser body 2 and the bristles 3, The wire mesh does not affect the water leakage of the sponge body in the inner cavity of the blackboard eraser body 2, and can firmly fix the brush hair 3 on the blackboard eraser body 2, which increases the overall pressure resistance of the blackboard eraser and is fixed on the blackboard. The brush hair 3 on the wipe body 2 has selected a sponge product with certain water permeability and wear resistance.

When in use, only need to open the water injection port 3 of the blackboard eraser body 2, fill in a certain amount of water, store it by the sponge in the hollow inner cavity, and then close the water injection port 3, you can use it with confidence, and wipe it on the side At the same time as the blackboard is being wiped, water will slowly seep out from the sponge products of the brushing part. At this time, there will be no white powder marks on the blackboard after wiping. The blackboard after wiping is black and bright. More importantly, There will be no dust when wiping the blackboard with this blackboard. Teachers and classmates no longer need to worry about the dust splashing when wiping the blackboard.

Claims (2)

1. An environment-friendly dust-free blackboard eraser, comprising a blackboard eraser body and a brush, wherein the brush is arranged on the front of the blackboard eraser, and is characterized in that the blackboard eraser has a hollow cavity, and the inner cavity A sponge body with better water storage performance is provided, a water injection port is arranged on the side of the blackboard eraser body, and a steel wire mesh for fixing the bristles is arranged on the contact surface between the blackboard eraser body and the bristles. 2. The environment-friendly dust-free blackboard eraser according to claim 1, characterized in that the bristles are sponge products.

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