Extruding type retractable ball-point pen

Abstract

The invention relates to a ball-point pen, and particularly to an extruding type retractable ball-point pen. The extruding type retractable ball-point pen comprises a pen refill, a pen tube and a tube head, wherein an extruding flange is arranged on the circumference of the pen refill; a supporting flange is arranged on the inner wall of the tube head; a supporting spring is mounted on the pen refill at the part between the supporting flange and the extruding flange in a sleeving manner; extruding holes are formed in the pen tube corresponding to the extruding flange in a symmetric manner; an extruding rod is movably mounted in each of the extruding holes; an extruding block is fixedly mounted at the end head of each of the extruding rods in the pen tube; and the extruding blocks are in contact connection with the extruding flange. The extruding type retractable ball-point pen has the advantages as follows: extruding handles are extruded to enable the pen refill to extend out of the outer end of the tube head, the pen refill is always kept in a retraction state under a non-use state and the action of the supporting spring, and the problem that the pen is unsmooth in writing or unable to work due to that the pen refill is easy to break when the conventional ball-point pen rolls down onto the ground is avoided; besides, the extruding type retractable ball-point pen has the characteristics of being simple in the structure and good in practicability, and is particularly suitable for being used by primary and secondary school students.

Description

technical field [0001] The invention relates to a ball-point pen; in particular, it relates to an extruding telescopic ball-point pen. Background technique [0002] Ball-point pen is one of the commonly used writing tools; traditional ball-point pens are divided into two types: fixed type and retractable type. The fixed type ball-point pen protects the nib through the pen cap. When using it, take off the cap and expose the pen tip to write; the retractable type is also called automatic. When in use, by pressing the pressure handle on the top, the pen tip can be stretched out to write. After use, press the pressure handle again, and the pen tip can be retracted into the pen holder to achieve the purpose of protecting the pen tip. Because the ballpoint pen writes fluently, it is very popular among people, especially primary and middle school students. However, due to the limited desk area of ​​primary and middle school students, the phenomenon that the ballpoint pen rolls off...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a squeeze-type telescopic ball-point pen with simple structure and good practicability to solve the problem that when the existing ball-point pen rolls down to the ground, the nib is easily broken, resulting in unsmooth or impossible writing.

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