Water pumping whiteboard pen for teaching and with self-adsorption function

Abstract

The invention discloses a water pumping whiteboard pen for teaching and with a self-adsorption function. The inner wall of a pen holder is provided with a rod sleeve, and the outer wall of the rod sleeve is connected with the inner wall of the pen holder in an overlap joint manner; a refill is installed on the inner wall of the rod sleeve, and a rubber plug is installed at the bottom end of the refill; and the outer wall of the left side of the rubber plug is connected with the outer wall of the right side of the refill. According to the water pumping whiteboard pen for teaching and with the self-adsorption function, due to the effects of a pulling rod, a guiding pipe and the rubber plug, under the effects of a gasket, the defects that cyclic using cannot be achieved, a pen cap is providedwith a force magnet, the manufacturing cost of whiteboard pens is increased, waste of the magnet is also caused, the purchasing expenditure of a school for the whiteboard pens is increased, and workfatigue is caused when a teacher uses the traditional whiteboard pen for blackboard writing is caused are overcome; and the work efficiency is improved when the teacher performs blackboard writing, the service life of the whiteboard pen is prolonged, the using expenditure used for purchasing teaching aids is saved, waste of the teaching aids is avoided, and the water pumping whiteboard pen is suitable for using and popularizing.

Description

technical field [0001] The invention relates to the technical field of teaching aids, in particular to a self-absorbing whiteboard marker for teaching. Background technique [0002] Whiteboard markers are an important member of teaching and office supplies. Compared with the traditional tool chalk on the board, they have a strong challenge. Because of the wide range of uses of whiteboard markers, smooth writing, convenient use, dust-free and erasable, environmental protection and safety, etc., It is suitable for the rapid change of teaching aids and office supplies. With the development of China's education and the update of basic teaching aids and office supplies, consumers at home and abroad have also increased a lot of awareness of environmental protection and safety in the use of teaching aids and office supplies. Whiteboard markers The market demand is continuing to grow rapidly. No matter at home or abroad, whiteboard pens are becoming widely used, in great demand, and...

AI Technical Summary

Problems solved by technology

The whiteboard markers on the market are generally alcohol-based whiteboard markers. Due to technical problems, the technology of water-based whiteboard markers is immature and the quality is not stable, so the output is small. It is still in the exploratory stage. The use of water-based whiteboard markers is still related to the region. , it is better to use in the dry climate in the north, and if the air humidity is high during the rainy season in the south, it will affect the use of water-based whiteboard markers. In the prior art, for example, the invention patent with application number 201120172382. Although the structure is simple, there are many deficiencies and defects. In the existing equipment, the design of the whiteboard pen has defects. The refill of the whiteboard pen is a disposable consumable and cannot be recycled. It increases the manufacturing cost of whiteboard markers, causes waste of magnets, and increases the school’s purchase of whiteboard markers. The connection between the tip of the whiteboard marker and the marker itself is unstable, making the refill and ink easy to evaporate quickly and shortening the service life. , when teachers use whiteboard pens to write blackboard writing, they often need to shake hard, which causes the teacher's work fatigue when using whiteboard pens to write blackboard writing. In view of these situations, in order to avoid the above-mentioned technical problems, it is necessary to provide a teaching tool. Water-pumping whiteboard marker with self-adsorption function to overcome the defects in the prior art

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