JPH0516377U - Nib - Google Patents

Abstract

(57) [Abstract] [Purpose] Allows writing with three types of lines with different line widths, such as thin width, thick width, and extra-thick width, with a single nib brush tip General writing can be always written on the extended line of the axis of the pen tip without the regulation of writing direction unlike the fountain pen type. A first to a third writing part having an end portion of an ink passage in an axial direction opened at a tip portion of a pyramid or a truncated pyramid shape, the first writing portion is aligned with the axis line, and the second and third The 3 writing parts are formed continuously with the first writing part, respectively,
The horizontal width and the vertical width of the first writing portion are substantially equal to each other, and the width is narrower than the vertical width of the second writing portion.
The width of the writing area is in a wide ratio.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pen tip useful for general writing such as ordinary-sized characters and lines, as well as for designing and drawing materials.

[0002]

[Prior Art]

 General writing nibs that can write characters and lines of ordinary size due to narrow line width are called felt-tip pens (for example, see Japanese Utility Model Publication No. Sho 49-20431) and fountain pen-type pen tips. There is a flat pen tip (see, for example, Japanese Utility Model Publication No. 57-5178), and as a pen tip for drawing, it is possible to write large characters and thick lines with two different types of lines, thick width and extra-thick width. Is called calligraphy (see, for example, Japanese Utility Model Publication No. 63-4 1183).

The former one for general writing is useful for writing ordinary-sized characters and lines, and even for slightly thick line width, the tip side of the shell shape is used or the writing pressure is changed. Although it is possible to write with this, the line width is apt to be disturbed, and it is impossible to write characters and lines with thicker lines than the width due to structural limitations.

On the other hand, in the latter, the line width is changed into two types depending on the writing direction, that is, a medium thickness and a very thick line whose maximum width is the same as the pen tip diameter. It is possible to write, and it is not impossible to write a small size character or line with a narrow line if you use the corner of the writing tip, but the same corner is not drawn from the axis of the writing tip. It is not suitable for general writing due to structural reasons such as deviation, and is not actually used for general writing.

As described above, it is impossible for the conventional one to be commonly used for general writing, designing, and drawing with a single nib.

[0006]

[Problems to be solved by the device]

 The problem to be solved is to enable writing with three types of lines of thin width, thick width and extra-thick width with a single nib writing brush. Is to provide a pen that does not have the regulation of writing direction like a fountain pen type and can always write on the extension of the pen tip axis.

[0007]

[Means for solving problems]

 According to the present invention, the writing section at the tip is on the axis and is capable of general writing, and the writing sections following the writing section at the tip are each capable of writing a wide line. It is characterized by that.

[0008] Specifically, the first to third writing parts are provided at the tip of the pyramid or the truncated pyramid shape, and the ends of the ink passages in the axial direction are open, and the first writing part is on the axis. The second and third writing parts are formed continuously with the first writing part, respectively, and the width and height of the first writing part are substantially equal to each other, and the width is larger than the vertical width of the second writing part. The width of the third writing portion is narrow, and the width of the third writing portion has a wider ratio than the vertical width of the second writing portion.

Further, in the present invention, the outer shape of the cross section extending to the tip portion of the pen tip may be a square such as a square, a triangle or a rectangular, a round, an oval, or any other suitable shape. Further, the nib is a plastic nib having a groove-shaped ink passage in the axial direction, a synthetic fiber nib having a porous ink passage in the axial direction and the radial direction, a sintered metal nib, Any of the ceramic nibs may be used.

[0010]

[Action]

 The ink passage ends are open in the first, second, and third writing parts, respectively, and the ink is guided to the writing parts by capillaries. Therefore, the width of each writing part is equivalent to the width, that is, the thin width and the wide width. , 3 types of line widths of very thick width can be appropriately selected and written with a line of a constant width. Since the first writing portion is on the axis, general writing such as characters and lines of ordinary size can be performed on the extension of the axis without worrying about the directionality around the pen tip axis.

[0011]

【Example】

 In the plastic nib of the first embodiment illustrated in FIGS. 1 to 3, the pen nib body 1 has an ink passage 2 formed along the axial direction inside a substantially rectangular cross section having a lateral width larger than the longitudinal width. The end portion 2a of the ink passage 2 is opened at the tip 3 of the truncated pyramid shape, the first writing portion 4, the upper and lower second writing portions 5 and 5, and the left and right third writing portions 6 respectively. , 6 are formed. The first writing section 4 is on the axis, and the horizontal width 4a and the vertical width 4b are substantially the same.

The upper and lower second writing parts 5 and 5 are formed on the upper surface part 3a and the lower surface part 3b of the tip part 3 obliquely toward the upper edge 4c and the lower edge 4d side of the first writing part, respectively. The front edges 5c, 5c of the second writing parts 5, 5 having an oblique flat shape are continuous with the upper edge 4c and the lower edge 4d of the first writing part 4, and between the front edge 5c and the rear edge 5d. The vertical width 5b is wider than either the horizontal width 4a or the vertical width 4b of the first writing section 4.

The left and right third writing portions 6 and 6 are formed on the right side surface portion 3c and the left side surface portion 3d of the tip portion 3, respectively, obliquely toward the right edge 4e and the left edge 4f side of the first writing portion. , The front edges 6c, 6c of the third writing section 6, 6 having an obliquely flat shape are continuous with the right edge 4e and the left edge 4f of the first writing section 4, and the front edge 6c and the rear edge 6d. The width 6a between them is formed wider than the width 5b of the second writing section 5.

The ratio relationship between the lateral width 4a and vertical width 4b of the first writing portion 4, the vertical width 5b of the second writing portion 5, and the lateral width 6a of the third writing portion 6 is as follows.

4a = 4b <5b <6a

Then, the ratio relationship obtained by adding the lateral width 5a of the second writing portion 5 and the vertical width 6b of the third writing portion 6 is as follows.

4a = 4b <5b <6b <5a <6a

With this, the pen tip is moved in the left-right direction, and in each of the writing parts 4, 5 and 6, three types of line widths corresponding to the horizontal width 4b, the vertical width 5b and the horizontal width 6a are appropriately selected. , General writing by the first writing unit 4 on the axis and bold writing can be freely performed. Furthermore, if you move the pen tip in the front-back direction, you can freely use the line widths of 5 types, including the horizontal width 5a and the vertical width 6b.

The plastic nib of the second embodiment illustrated in FIG. 4 is basically the same as that of the first embodiment except that the first writing part 4 is formed into a round head shape. Since they are the same, detailed description will be omitted.

The plastic pen nib of the third embodiment illustrated in FIG. 5 has a configuration except that the tip portion 3 is formed in a pyramidal shape and the first writing portion 4 is formed in a sharp shape. Since it is basically the same as that of the first embodiment, detailed description thereof will be omitted.

The plastic pen tip of the fourth embodiment illustrated in FIG. 6 is basically the same as that of the first embodiment, and therefore the description of the common configuration is omitted and different. The configuration will be described below.

The second writing portions 5 and 5 are formed on the right side surface portion 3c and the left side surface portion 3d of the tip portion 3, and the third writing portions 6 and 6 are formed on the upper surface portion 3a and the lower surface portion 3b, respectively. The width ratio of the parts is as follows.

4a = 4b <5b <5a <6a <6b

The plastic nib of the fifth embodiment illustrated in FIG. 7 is basically the same as that of the first embodiment except that the tip portion 3 is shaped like a truncated cone. The detailed description is omitted.

The synthetic fiber nib of the sixth embodiment illustrated in FIG. 8 is basically the same as that of the first embodiment except that it is a synthetic fiber pen made of a bundled fiber body. Therefore, detailed description is omitted.

[0026]

[Table 1] ┌────┬────┬────┬────┬────┬────┬────┐ │ │ Example 1 │ Example 6 │ Comparative Example 1│Comparative Example 2│Comparative Example 3│Comparative Example 4│ ├────┼────┼────┼────┼────┼────┼─── ─ ┤ │ Structure │ Figures 1-3 │ Same as left │ Figure 9 │ Figure 10 │ Figure 11 │ Figure 12 │ ├────┼────┼────┼────┼────┼ ────┼────┤ │Pen point │Plastic │Synthetic fiber │Plastic │Same left │Same left │Synthetic fiber │ │ Kind of │ Pen │ Pen │ Pen │ │ │ Pen │ ├-- ──┼────┼────┼────┼────┼────┤ │Material │Polyace │Nylon │Polyace │Same │Same │Nylon│ │ │ Tar │ │ Tar │ │ │ │ ├────┼────┼────┼ ───┼────┼────┼────┤ │ 3 or more │ │ │ │ │ │ │ │ Line width is written │ ○ │ ○ │ × │ ○ │ × │ × │ │ │ │ │ │ │ │ │ │ │ ├────┼────┼────┼────┼────┼────┼────┤ │ General writing │ ○ │ ○ │ ○ │ × │ ○ │ ○ │ │ Can be done │ │ │ │ │ │ │ │ ├────┼────┼────┼────┼────┼────┼ ────┤ │ handwriting suppression │ │ │ │ │ │ │ │ added │ ○ │ ○ │ △ │ × │ × │ △ │ │ │ │ │ │ │ ├────┼── ──┼────┼────┼────┼────┼────┤ │ Writing pressure │ ○ │ △ │ △ │ ○ │ ○ │ × │ │ │ │ │ │ │ │ │ │ │ ├────┼────┼────┼────┼────┼────┼────┤ Ink │ ○ │ ○ │ △ │ △ │ × │ △ │ │ Low │ │ │ │ │ │ │ └────┴────┴────┴────┴────┴─ ───┴────┘

As shown in Table 1, in Examples 1 and 6 which are embodiments of the present invention, it is possible to easily write three or more line widths, and to write general writing with a thin line width on the extension line of the axis line. In addition, inflection was easily added to the handwriting, and good results were obtained in terms of writing pressure resistance and ink flow. In contrast, in each comparative example, a line width of 3 or more was obtained. It is possible to write or write general writing with a narrow line width, but only one of them can be done, and there are merits and demerits regarding other check items, and there is a problem.

[0028]

[Effect of the device]

 I. Ink passage end portions are opened in the first, second, and third writing portions, respectively, and ink is guided to the writing portions by capillaries. Therefore, the width of each writing portion is equivalent to a narrow width, a wide width, and a very thick width. It is possible to write with a constant line width by appropriately selecting three types of line widths.

B. Since the first writing portion is on the axis, it is possible to write letters or lines of ordinary size on the extension of the axis without worrying about the directionality of the pen tip axis.

C. Since the line width can be adjusted by the writing pressure and the writing angle, it is possible to obtain the handwriting with the inflection of a fountain pen.

D. When writing with the same thin line width, it can withstand a higher writing pressure than a conventional nib with a conical tip.

E. Even during writing by the first writing unit, ink is supplied to the first writing unit from the second and third writing units, so that the ink flow is increased and the writing feeling is good.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a first embodiment of a pen tip of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged vertical sectional view of the same.

FIG. 4 is a perspective view illustrating a second embodiment of the pen tip of the present invention.

FIG. 5 is a perspective view illustrating a third embodiment of the pen tip of the present invention.

FIG. 6 is a perspective view illustrating a fourth embodiment of the pen tip of the present invention.

7A is a perspective view illustrating a fifth embodiment of the pen tip of the present invention, and FIG. 7B is a sectional view of the same.

FIG. 8 is a perspective view illustrating a pen tip according to a sixth embodiment of the present invention.

9A is a perspective view illustrating Comparative Example 1, and FIG.
Is the same sectional view.

FIG. 10A is a perspective view illustrating Comparative Example 2, and FIG.
Is the same sectional view.

11A is a perspective view illustrating Comparative Example 3; FIG.
Is the same sectional view.

FIG. 12A is a perspective view illustrating Comparative Example 4.

[Explanation of symbols]

1 Pen body 2 Ink passage 2a Ink passage end 3 Tip 3a Tip upper surface 3b Tip lower surface 3c Tip right surface 3d Tip left surface 4 1st writing section 4a 1st writing section Width 4b Vertical width of the first writing part 4c Upper edge of the first writing part 4d Lower edge of the first writing part 4e Right edge of the first writing part 4f Left edge of the first writing part 5 Second writing part 5a Second writing Width 5b Second writing part vertical width 5c Second writing part leading edge 5d Second writing part trailing edge 6 Third writing part 6a Third writing part horizontal width 6b Third writing part vertical width 6c Third Front edge of writing part 6d Rear edge of third writing part

Claims (1)

[Scope of utility model registration request] 1. A first to third opening end of an ink passage in the axial direction is opened at the tip of a pyramid or truncated pyramid.
The first writing portion is on the axis, the second and third writing portions are formed continuously with the first writing portion, and the width and length of the first writing portion are substantially equal to each other. Further, the pen tip is characterized in that the width is narrower than the vertical width of the second writing portion, and the lateral width of the third writing portion is wider than the vertical width of the second writing portion.