JPS6134148Y2 - - Google Patents

Description

[Detailed description of the invention] As is well known, in most conventional felt-tip pens, a pen body with a tip of a certain shape or thickness is inserted directly or indirectly through a holder into an insertion hole at the tip. Since it is only inserted and inserted, when writing characters or lines of different thickness such as bold or thin, it is uneconomical and cumbersome to handle as it requires a felt-tip pen of each thickness. It was inconvenient.

Therefore, there are so-called double-ended felt-tip pens, which have thick, thin, or oddly shaped nibs attached to both ends of the pen shaft.
This type of pen has disadvantages in terms of the structure and manufacturing of the pen barrel, and because it requires two pen nibs, it requires time and effort to use materials and their installation, and is therefore expensive. It is something to do.

However, in addition to the above, there is a method in which one half of a pen core with thick and thin ends is simply inserted into a hole in the tip of the shaft, and the protruding base of the pen core is fastened with a tightening tube. When writing, the pen core inside the hole moves freely due to the pressure of the pen when writing, which causes the nib to move uncontrollably, making it difficult to write.

The object of the present invention is to provide a felt-tip pen of this type which is easily and inexpensively obtained without the disadvantages mentioned above, and which can always reliably write character patterns of various thicknesses with a single felt-tip pen.

That is, as shown in the drawing, one tip is inserted into the insertion hole 3, which has a relatively large diameter and narrows slightly inward, at the tip of the stepped tip 2 of the pen barrel 1. A holder 4 is fitted with the center part of a rod-shaped pen body 5 whose other end is formed into a thick rectangular nib K and a holder 4 having an outer shape 4' that fits the insertion hole, with a part of its base protruding outside. In this state, the holder is detachably fitted, and a truncated conical tightening tube 7 is attached across the protrusion of the holder and the outside of the shaft tip 2 connected thereto, and then inserted into the pen shaft 1. It is constructed by inserting one nib P of the pen body 5 into the end of a rod-shaped ink swab 6 made of a fiber bundle.

The present invention has been constructed as described above, so when writing bold letters or thick line patterns, grip the pen barrel 1 with the thicker nib K protruding as shown in Figure 2. However, when writing fine letters or fine line patterns, first remove the clamping tube 7, then grasp the protrusion of the holder 4 and pull it out from the insertion hole 3 together with the pen body 5, then turn it over and reinstall the holder 4. After inserting the pen into the insertion hole 3 and then attaching the tightening tube 7, the thinner nib P will protrude, and fine letters or fine line patterns can be written with the nib.

As described above, the present invention involves attaching and detaching the pen body, which has thick, thin, or irregularly shaped pen nibs at both ends, to the insertion hole at the tip of the pen shaft via the holder fitted in the center of the pen body. Since the clamping tube is attached, the same pen barrel can be used as a writing instrument for both thick and thin pens, and if the nibs on both ends of the pen body are provided with various shapes, it is of course possible to use the same pen for writing instruments with various desired characters and patterns. However, in particular, in this structure, the pen body is attached and removed through a holder whose center part is fitted into the insertion hole at the tip of the shaft, so the pen body is not distorted or damaged, and the protrusion of the holder is Since the clamping tube is attached to the outside of the tip of the shaft, the pen body is firmly held continuously from the base to the tip of the clamping tube.Therefore, since the pen tip does not move unexpectedly, it is possible to use a flexible felt-tip pen core and a pen. This is an extremely advantageous design for this type of felt-tip pen, as it has the effect of always being able to write easily and reliably.

[Brief explanation of drawings]

FIG. 1 is a side view of the pen body with a holder according to the present invention, and FIG. 2 is a longitudinal sectional side view of the main part showing the pen body with a holder as described above inserted into the tip of the pen shaft. 1 is the pen barrel, 2 is the tip, 3 is the insertion hole, 4 is the holder, 5 is the pen body, P is the thin nib, and K is the thick nib.

Claims (1)

[Scope of utility model registration request] Thick, thin, or irregularly shaped pen nibs P, K are attached to both ends of the insertion hole 3 that tapers slightly inward at the tip 2 of the pen barrel 1.
A holder 4 into which the central part of a single pen body 5 is fitted is removably inserted with a part of it protruding outside, and the protruding part of the holder and the shaft tip 2 connected to it are inserted. This felt-tip pen has a truncated conical clamping tube 7 attached detachably across the outside, and one nib of the pen body 5 is inserted into the end of a rod-shaped ink cotton 6 inserted into the pen shaft 1.