Pen with propulsive refill

Abstract

A pen with telescopic core features that its internal sleeve tube the first and the second stop rings respectively on its front and back ends, a load-bearing ring can slide on the internal sleeve tube between said two stop rings, and an axle rod passing through the internal flange at the front end of a hollow tube is connected with a sleeve ring via spiral threads.

Description

technical field [0001] The invention relates to an office writing tool, in particular to a pen with a retractable pen core. Background technique [0002] In the design field of writing pens, there are many different designs for the structure used to operate the expansion and contraction of the pen core. Among them, the most common is a commonly known push-type pen. Its specific structure is shown in Figures 1 to 4. The push-type pen 1 generally includes an outer pen tube 10 with several guide rails 101 inside the tail end, a button 11 with an annular ratchet 111 at the front end, an inner sleeve 12 with an annular ratchet 121 at the rear end, and a set of inner sleeve 12 Inside the pen core 13 and a set of return spring 14 on the front end of the pen core 13; and when the button 11 is pressed as shown in Figure 1, the annular ratchet 111 at the front end of the button 11 can follow several corresponding positions of the outer pen barrel 10. The guide rail 101 linearly slide...

AI Technical Summary

Problems solved by technology

The structures of the above-mentioned known push-type pens and swing-type pens are different from each other, and the operation modes of the expansion and contraction of the refills are also different between the two.

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