JPS623263Y2 - - Google Patents

Description

[Detailed explanation of the invention] Conventionally, this type of reheal was a type in which the insertion part provided at the connecting end of the writing lead holder was simply press-fitted into the tip of the pipe. The connection part may come loose or the writing lead holder may come off, and air leakage may occur when the cap is attached or removed, or when the writing instrument is loaded into or taken out of the writing instrument body.

The purpose of the present invention is to eliminate such defects, and the purpose of the present invention is to attach the inside of the synthetic resin writing lead holder to the tip of a pipe made of stainless steel or other metal or synthetic resin that contains an ink-absorbing batting. A marking pen that combines a pipe and a writing lead holder by press-fitting a cylindrical insertion part integrally provided at the end;
When reheating a writing instrument such as a ballpoint pen, an annular groove is formed on the outer periphery of the proximal part of the cylindrical insertion part, and a groove made of stainless steel or the like with an outer diameter slightly larger than the inner diameter of the same part is formed inside the cylindrical insertion part. The reinforcing ring is press-fitted into the lining state, and this cylindrical insertion part is press-fitted to the tip of the pipe until the tip edge of the pipe abuts against the abutting flange. The gist is to connect the writing lead holder in an air-tight manner, and to provide a string-like protrusion that fits into the groove at the tip of the pipe at a location corresponding to the groove by beading. It is.

The illustrated embodiment comprises a stainless steel pipe 2 containing an ink-absorbing batting 1 and a writing lead holder 3 made of hard synthetic resin, and the writing lead holder 3 is provided with a pipe 2 at its connecting end. A cylindrical insertion part 5 having an outer diameter slightly larger than the inner diameter of the tip part 4, an annular unevenness 6 on the outer periphery of the cylindrical insertion part 5, and a proximal end of the cylindrical insertion part 5. An abutment flange 7 is provided at the tip of the pipe 2, and an annular groove 8 is provided on the outer periphery of the cylindrical insertion portion 5 near the proximal end. A stainless steel reinforcing ring 16 with a slightly larger outer diameter is press-fitted into the lining state, and this cylindrical insertion portion 5 is then inserted into the pipe 2.
The writing lead holder 3 is air-tightly connected to the tip of the pipe 2 by press fitting until the tip edge of the pipe 2 abuts against the abutment flange 7, and the tip of the pipe 2 is press-fitted to the tip of the pipe 2. A string-like protrusion 9 that fits into the groove 8 is provided at a location corresponding to the groove 8 in step 4 by beading, and the pen tip 11 is press-fitted into the pen hole 10 of the writing lead holder 3. The inner end of the nib 11 is pierced into the tip of the batting 1, the batting 1 absorbs the required ink, and the tail plug 12 is fitted to the tail end of the pipe 2.

In the figure, 14 indicates an air hole, and 15 indicates a cap.

The present invention is shown in FIGS. 4 to 6 as a reinforcing ring 16.
The reinforcing ring 16 may be made of metal other than stainless steel such as spring steel, plastic, or other materials.

In this invention, an annular groove is formed on the outer periphery of the proximal end of the cylindrical insertion part, and a reinforcing ring made of stainless steel or the like with an outer diameter slightly larger than the inner diameter of the cylindrical insertion part is press-fitted into the cylindrical insertion part. This cylindrical insertion part is then press-fitted to the tip of the pipe until the tip edge of the pipe abuts the abutment flange, and the writing lead holder is attached to the tip of the pipe. A string-like protrusion was created by beading to connect the pipe in an air-tight manner and fit into the groove at the tip of the pipe, so it was installed at the connecting end of the writing lead holder. A triple structure in which a reinforcing ring inside the cylindrical insertion part firmly supports the cylindrical insertion part when it is lined with a double slip-out prevention structure in which the string-like protrusion at the tip of the pipe fits into the groove provided on the outer periphery of the insertion part. It is possible to reliably prevent the writing lead holder from being removed from the pipe or loosening of the fitting, and thereby has the effect of reliably achieving the above object.

[Brief explanation of the drawing]

The figure shows an embodiment of the reheating of writing instruments such as marking pens and ballpoint pens according to the present invention.
The figure is a perspective view showing the whole, Figure 2 is an enlarged sectional view of the main part along line A-A in Figure 1, Figure 3 is an exploded perspective view of the main part, and Figures 4 to 6 are other reinforcements. It is a perspective view showing the shape of a ring. 1... Filling, 2... Pipe, 3... Writing lead holder, 4... Tip, 5... Insertion part, 6... Unevenness, 7... Flange, 8... Concave groove, 9... ... String-like projection, 10 ... Pen hole, 11 ... Pen tip, 12 ...
...Tail plug, 14...Air hole, 15...Cap, 1
6...Reinforcement ring.

Claims (1)

[Scope of utility model registration request] A cylindrical insertion part integrally provided at the inner end of a synthetic resin writing lead holder is press-fitted into the tip of a stainless steel or other metal or metal resin pipe that has a built-in ink-absorbing batting. When reheating writing instruments such as marking pens and ballpoint pens that are combined with a holder, an annular groove is provided on the outer periphery of the proximal part of the cylindrical insertion part, and the same part is inserted into the cylindrical insertion part. A reinforcing ring made of stainless steel or the like with an outer diameter slightly larger than the inner diameter is press-fitted into the lining state, and the cylindrical insertion part is inserted into the tip of the pipe so that the tip edge of the pipe abuts against the abutting flange. A string-like protrusion that connects the writing lead holder to the tip of the pipe in an air-tight manner by press-fitting until the end of the pipe, and also fits into the groove at a location corresponding to the groove at the tip of the pipe. Rehealing of writing instruments such as marking pens and ballpoint pens made by beading.