JPS623260Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention aims to provide a refill for a writing instrument that stabilizes the tip of an ink storage body such as batting and improves the fluidity of ink by activating air replacement. A constricted part is provided at the tip of the barrel body, and a required number of rib-like spacers are integrally provided deep inside the barrel body to block the periphery of the tip surface of the ink absorber such as batting. The gist of this is to hold a pen core whose tail end is pierced through the ink storage body in the narrowed portion at the tip.

In the illustrated embodiment, the proximal end of a steel pipe body 3 is press-fitted and fixed into a distal end opening 2 provided at the narrowed end of a hard plastic barrel body 1, and the distal end face is pressed against the pipe body 3. A lead holder 6, which has a flange 4 at its tip to stop the pen core 5 from passing through, is inserted into the inner hole, and an air hole 7 in the axial direction is inserted along the outer surface of the pipe body 3 through the narrowing of the barrel body. Rib-shaped spacers 9, 9', 9'' are provided in the cross section, and the peripheral edge of the tip surface of the batting 8, into which the proximal end of the pen core 5 is inserted into the deep inner part of the barrel main body 1, is blocked. They were set up every 120 degrees.

Since the present invention is constructed as described above, the tip of the ink storage body such as batting is stabilized, and the spacer activates air displacement, improving the fluidity of the ink and improving writing performance. In addition, a constricted part is provided at the tip of the barrel main body, and this part holds the pen core whose tail end pierces the ink absorber, so that the barrel main body, spacer, and pen core are The holding portion is integrally formed, which has the effect of significantly simplifying the overall configuration.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
The figure is a partially vertical cross-sectional view, and FIG. 2 is a cross-sectional view taken along line A--A in FIG. 1. 1... Barrel body, 2... Tip opening, 3... Pipe body, 4... Flange, 5... Pen core, 6... Lead holder, 7... Air hole, 8... Filling, 9 ……spacer.

Claims (1)

[Scope of utility model registration request] A constricted part is provided at the tip of the shaft cylinder body,
A required number of rib-shaped spacers are integrally provided deep inside the barrel body to block the periphery of the tip surface of the ink absorber such as batting, and the tail end pierces the ink absorber at the narrowed part at the tip of the barrel body. A refill for a writing instrument that holds a pen core.