Thermo-sensitive erasable direct liquid type water-based pen

Abstract

The invention discloses a thermo-sensitive erasable direct liquid type water-based pen. The thermo-sensitive erasable direct liquid type water-based pen comprises an ink bag. The ink bag is provided with an inner cavity and an open end communicating with the inner cavity. A writing head is installed at the open end of the ink bag and comprises a connecting base, a fixed plug which is fixedly arranged at the end of the connecting base, a sliding pipe which is installed in the connecting base in a sliding mode, an elastic part which is installed between the sliding pipe and the fixed plug and anib which is installed on the sliding pipe. One end of the nib is arranged in the sliding pipe, and the other end of the nib sequentially penetrates through the sliding pipe and the connecting base. An outer step is arranged on the sliding pipe, and an inner step is arranged in the connecting base, and the gradient of the inner step is the same as that of the outer step. An ink inlet is formed inthe sliding pipe and located between the outer step and the nib. Under the action of writing pressure and the pressure of the elastic part, the sliding pipe can axially move, and the outer step and the inner step are separated from each other or matched with each other to achieve on or off of an ink passage. The thermo-sensitive erasable direct liquid type water-based pen is simple in structure and relatively low in material and processing requirements.

Description

technical field [0001] The invention belongs to the technical field of stationery, and in particular relates to a heat-sensitive erasable straight liquid water-based pen. Background technique [0002] Existing commonly used straight-liquid water-based pens are basically composed of an ink bag, a water storage device, a connecting seat and a writing tip. The processing accuracy and surface treatment effect of the water reservoir, as well as the cooperation between the water reservoir and the connecting seat, etc. will all affect the use effect of the direct liquid water-based pen. [0003] In order to further improve the use effect of the straight-liquid water-based pen, it can be achieved by improving the machining accuracy of the water reservoir, improving the surface treatment effect and improving the precision of parts matching, but this requires the improvement of design and processing technology, or the use of high-performance materials. The direct result is an increas...

AI Technical Summary

Problems solved by technology

At present, this product is mostly used with roll-spun cores and fiber pens, and there is no example of applying it to straight-liquid water-based pens.

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