The original function of the pen is used for writing. As an additional function of the pen, the pen holder provides the availability of the collar, notebook, etc. However, these two functions correspond to two different behaviors and environments. When writing, the function of the pen holder is not used. When using the function of the pen holder, the function of writing is not used. The two behaviors are opposite and mutually converted. However, the function of the pen holder in the existing products always exists. When the two functions of writing and writing are in the same environment, the use process will produce interference, as a result, when the pen holder function is used, the writing function does not disappear, and it is easy to cause behaviors such as wrong scratches of clothes and pages. Through the redesign of the pen, the structure is redesigned, so that the two functions correspond to the two behaviors separately, explained by the use environment, and the two functions form opposition. Cut a part of the pen case to integrate the pen cap and the pen holder. When the pen cap is pressed down and the refill appears, the function of the pen holder disappears when the writing function is performed, and vice versa. Through the pressing of soft glue on the side, the pen cap of the refill rebounds, the writing function disappears, and the function of the pen holder appears, so as to realize the mutual fit and transformation of the pen function and human use behavior.

A friend said that he had collided with the creativity of Master Naoto Fukasawa. I also searched it and released it directly for you to see.