dial-operated pen

Abstract

The invention discloses a pen operated through shifting rotation. The pen comprises a pen shell, a cartridge and a driving mechanism driving the cartridge to stretch out and draw back, and is characterized in that the driving mechanism comprises a rotating part, a transmission gear and a pressing part connected with the cartridge, the transmission gear is arranged on the rotating part, the pressing part is provided with a toothed bar which is engaged with the transmission gear and has the same stretching-out and drawing-back direction as the cartridge, a positioning assembly is arranged between the rotating part and the pen shell, and the rotating part drives the pressing part to move front and back through the transmission gear. The pen has the advantages that a rotation operation portion of the rotating part can be closely attached to the lateral wall of the pen shell, and thus people with small-sized hands can easily touch the rotation operation portion; the cartridge is stretched out and drawn back only by slightly shifting the rotating part, and manpower is saved; the pen can be used for normally writing, moreover, the cartridge collides and retracts into the pen shell when the pen falls onto the ground, the situation that the cartridge is damaged since the nib of the cartridge is impacted by large force is avoided, and the design is especially suitable for the pen large in overall mass.

Description

technical field [0001] The invention relates to the field of pens, in particular to pens with dial-type manipulation. Background technique [0002] The pen includes a pen case, a pen core arranged in the pen case and a driving mechanism for driving the pen core to expand and contract. The expansion and contraction mechanism of the traditional pen core is realized by two interlocking runners. The two runners are engaged with each other through helical teeth, and the expansion and contraction of the pen core is realized through the cooperation of the guide groove and the guide rib set on the runner. . When in use, press the button on the top of the pen to drive the drive mechanism, thereby controlling the extension and retraction of the pen core. The disadvantages of traditional pens are: 1. The button of the driving mechanism is often set on the top of the pen due to the structural relationship. For people with small hands, it is necessary to move up the position of holding...

AI Technical Summary

Problems solved by technology

The disadvantages of traditional pens are: 1. The button of the driving mechanism is often set on the top of the pen due to the structural relationship. For people with small hands, it is necessary to move up the position of holding the pen to realize the control of the pen core, which is inconvenient; 2. It takes a lot of force to press the top button, and frequent pressing will cause sore fingers; 3. When the pen falls from a high place, if the tip of the pen is facing the ground, the impact of landing will damage the refill and increase the cost of use

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