Damping telescopic pen and manufacturing method thereof

Abstract

The invention relates to a damping telescopic pen and a manufacturing method thereof, in particular to a product which changes the total length by the telescopic action of an inner tube when two sections of metal tubes with different calibers are sleeved together as well as a manufacturing method thereof. The damping telescopic pen is provided with two sections of metal tubes with different calibers, wherein an inner flange is arranged at the upper tip of the outer tube; the inner tube is inserted in the outer tube, the upper end of the inner tube extends outwards from the inner flange at the upper end of the outer tube and is provided with a plastic pen cap; a plastic piston which is contacted with the inner wall of the outer tube is arranged at the lower tip of the inner tube; the piston is blocked by the inner flange of the outer tube; a plastic pen point is arranged at the lower end of the outer tube; and a plastic core shaft which is integrated with the pen cap and the piston is arranged in the inner tube. The pen cap and the piston are directly and fixedly connected by the core shaft and the inner tube, thereby achieving good firmness; and meanwhile, the influence to the appearance caused by overflow adhesive is avoided, and the problems of low production efficiency and instable quality are solved.

Description

technical field [0001] The invention relates to a product in which two metal pipes with different pipe diameters are set together, and the total length can be changed through the telescopic action of the inner pipe and its manufacturing method. Background technique [0002] Metal retractable pens are now widely used in various devices with electronic touch screens. Please see Figure 7 : the existing metal telescopic pen has two metal tubes with different diameters, wherein the upper end of the outer tube 1' is provided with an inner flange 11' that shrinks inward; the inner tube 2' is inserted in the outer tube 1', and the inner tube 2 'The upper end protrudes outward from the inner flange 11' on the upper end of the outer tube 1' and installs a plastic pen cap 3'. The lower end of the inner tube 2' is provided with a plastic piston 5' which is in contact with the inner wall of the outer tube 1'. The inner flange 11' of the outer tube 1' blocks the piston 5' so that the i...

AI Technical Summary

Problems solved by technology

Because the pen cap 3' and the piston 5' of this retractable pen need to be bonded to the inner tube 2' respectively, if the amount of glue used at the bonding point is insufficient, then the firmness will be poor; if the glue used at the bonding point If the amount is too much, the excess glue will overflow, which will affect the appearance

Therefore, the production efficiency of this telescopic pen is low, the quality is unstable, and it is difficult to control the quality consistency of the product after assembly

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