JP7497227B2 - Writing implements - Google Patents

Description

The present invention relates to a writing instrument that can write line marks and thin lines such as letters with a single pen.

Generally, translucent fluorescent line marks are drawn over or near printed text in textbooks and other documents to make the contents easier to read and more noticeable. In addition, notes and other text are often written on documents with water-based or oil-based pens.

However, when marking a line and writing characters on the same document, it is necessary to alternate between using a line marking pen and a writing pen for writing characters.
Furthermore, if the cap is forgotten when switching from one pen to the other, the ink will evaporate or stain documents or other objects, requiring the user to replace the cap each time, which is cumbersome for the user.

Writing implements have been proposed in which multiple colors and types of writing tips and refills are arranged on a single barrel. Patent Document 1 describes a two-color ballpoint pen that includes a two-color ballpoint refill attached to one side of a case, a highlighter attached to the other side of the case, and a transparent cap that is attached to an assembly hole on one side of the case to which the two-color ballpoint refill is attached, allowing the two-color ballpoint refill to be seen from the outside.

Patent document 2 describes a multi-color writing instrument in which a fiber tip, felt tip, or plastic tip is attached to one or both ends of an ink occlusion body housed in a barrel, and in which a plurality of inks of different tones are filled in the vertical direction of the ink occlusion body, and each of the inks is a pigment-based coagulant ink in which the pigment is suspended in a loosely coagulated state using a water-soluble polymer coagulant.

JP 2015-536843 A JP 2010-100015 A

However, in the pen described in Patent Document 1, the ballpoint pen refill is placed on one side of a single barrel, and the highlighter pen is placed on the other, so it is necessary to hold the barrel in the opposite direction each time.

The device described in Patent Document 2 has multiple fiber tips, felt tips, or plastic tips attached to one end of a single ink occlusion body, and multiple inks of different tones are filled vertically in the ink occlusion body, allowing writing in two colors to be obtained with one writing instrument. However, since multiple tips are simply arranged at the end, the structure does not allow the line marking pen and writing pen to be used separately.

The present invention was made in consideration of the above-mentioned problems, and aims to provide a writing instrument that can be used as both a line marking pen and a writing pen by simply changing the grip of a single writing part held in the hand without the need for unnecessary movements.

The invention described in claim 1 that solves the above problem comprises a shaft portion and a cap portion, and a first tip for line marking and a second tip for fine line writing at the tip of the shaft portion, one of the first tip or the second tip is arranged along a central axis of the shaft portion, and the other of the first tip or the second tip is extended at an angle to the central axis, the tip of the first tip and the tip of the second tip are arranged with a gap between them, and a first ink tank that supplies translucent line marking ink to the first tip, and a second ink tank that supplies writing ink to the second tip are arranged inside the shaft portion.

Similarly, the invention described in claim 2 is characterized in that, in the writing instrument described in claim 1, the first tip is formed in a thin plate shape overall, with a laterally elongated rectangle, and is arranged along the width direction of the shaft along the central axis, and the second tip is formed in a thin needle shape overall, and is arranged inclined outwardly of the shaft on the width direction side of the first tip.

Similarly, the invention described in claim 3 is a writing instrument described in claim 1, characterized in that the first tip is a line marking tip whose tip is formed with an oblique inclination in the width direction so that the widthwise outer end of the shaft is shorter in the axial direction than the widthwise inner end, and has a paper surface contact portion capable of marking a specified width dimension on paper, and the second tip is arranged to the side of the widthwise inner end of the first tip, inclined in the opposite direction to the first tip, and is a felt pen tip capable of very fine writing, or a plastic pen tip capable of line drawing and covered with a metal pipe.

The invention described in claim 4 is characterized in that in the writing instrument described in claim 1, the ink filled in the first ink tank and the second ink tank is water-based or oil-based.

The invention described in claim 5 is characterized in that in the writing instrument described in claim 1, the first tip and the second tip are arranged on the shaft portion via a tip fixing member that fixes the positions of the first tip and the second tip.

The invention described in claim 6 is characterized in that, in the writing instrument described in claim 1, the inner peripheral surface of the shaft portion is provided with a guide ridge portion that guides and holds the first ink tank and the second ink tank in a predetermined position parallel to the central axis of the shaft portion, and is provided with a tip fixing member that is disposed at the tip of the shaft portion and fixes the positions of the first tip and the second tip, an ink tank fixing member that is disposed inside the shaft portion and fixes the positions of the first ink tank and the second ink tank, and a tail plug that is disposed at the rear end of the shaft portion and fits over and holds the cap portion when the writing instrument is in use.

The writing implement of the present invention allows the user to use a single writing part held in the hand as both a line marking pen and a writing pen by simply changing the grip without the need for unnecessary movements.

That is, according to the writing implement described in claim 1, a first tip for line marking and a second tip for fine line writing are provided at the tip of a shaft, one of the first tip and the second tip is arranged along the central axis of the shaft, the other of the first tip and the second tip is extended at an angle to the central axis, and the tip of the first tip and the tip of the second tip are arranged with a gap between them. Also, the first tip is supplied with translucent line marking ink from a first ink tank arranged inside the shaft, and the second tip is supplied with writing ink from a second ink tank.

Therefore, by simply rotating the writing instrument in the circumferential direction around the central axis in the hand while holding it, the first tip can be brought into contact with the paper surface, etc. to draw a mark line, and the second tip can be brought into contact with the paper surface, etc. to draw thin lines such as letters. Here, when drawing a mark line or thin line, the tips of the first tip and the second tip are positioned apart, so that a mark line and a thin line are not mistakenly drawn at the same time.

In addition, according to the writing instrument described in claim 2, the first tip is generally thin and formed into a laterally elongated rectangle, and is arranged along the width direction of the shaft portion along the central axis, while the second tip is generally elongated and needle-like, and is arranged on the width direction side of the first tip, inclined outwardly of the shaft portion.
Therefore, when drawing a mark line with the first tip, the writing implement can be used in the same way as a normal line marking pen, and when drawing characters or the like on paper with the second tip, the writing implement can be inclined at an appropriate angle to contact the paper or the like, allowing writing to be done with the writing implement held naturally.
Furthermore, when drawing a mark line with the first tip, the second tip is positioned at the widthwise end of the shaft portion of the first tip, which makes it possible to eliminate the risk of the second tip interfering with the first tip when it is in use.

According to the writing instrument described in claim 3, the first tip is a line marking tip with a tip portion formed at an angle in the width direction so that the widthwise outer end of the shaft portion is shorter in the axial direction than the widthwise inner end, and with a paper surface contact portion capable of marking a predetermined width dimension on the paper surface, and the second tip is disposed to the side of the widthwise inner end of the first tip, at an angle in the opposite direction to the width direction of the first tip, and is a felt pen tip capable of very fine writing, or a plastic pen tip covered with a metal pipe capable of line drawing.

For this reason, when the paper contact portion formed at an angle to the central axis of the first tip is brought into close contact with the paper, the shaft portion is held at an angle to the paper by the finger, and the second tip is positioned at an angle to the first tip in the opposite direction to the width direction of the shaft portion, so that the second tip is positioned away from the first tip in the direction opposite to the paper, and it is possible to reliably prevent the second tip from interfering with the paper when the first tip is in use. Similarly, it is also possible to prevent the first tip from interfering with the paper when the second tip is in use.

Furthermore, according to the writing instrument described in claim 4, the ink filled in the first ink tank and the second ink tank is water-based or oil-based. Therefore, each ink tank can be filled with ink of a suitable property according to the purpose.

Furthermore, in the writing instrument described in claim 5, the first tip and the second tip are arranged on the shaft portion via a tip fixing member that fixes the positions of the first tip and the second tip.

This allows the first tip and the second tip to be fixed accurately and securely at the tip of the writing instrument. In addition, the first tip and the second tip can be easily positioned when assembling the writing instrument.

And, according to the writing instrument described in claim 6, the shaft portion is provided with a guide ridge portion that guides and holds the first ink tank and the second ink tank in a predetermined position parallel to the central axis of the shaft portion, a tip fixing member that is disposed at the tip of the shaft portion and fixes the positions of the first tip and the second tip, an ink tank fixing member that is disposed inside the shaft portion and fixes the positions of the first ink tank and the second ink tank, and a tail plug that is disposed at the rear end of the shaft portion and fits over and holds the cap portion when the writing instrument is in use.

Therefore, when assembling the writing instrument, the first ink tank with the first tip attached and the second ink tank with the second tip attached can be easily attached to the shaft. That is, according to the present invention, the first tip and the second tip, each with a tip attached, are held together by the tip fixing member to form a single unit, and these are inserted from the bottom of the shaft along the guide ridge of the shaft to position them inside the guide ridge, and the tip fixing member is attached to the front end of the shaft and the tail plug is attached to the rear end of the shaft, completing the assembly. This process is the same as the assembly of a normal one-color line marking pen, and can reduce assembly costs.

FIG. 2 is a side vertical view showing the internal structure of the writing instrument according to the embodiment of the present invention. FIG. 2 is a front view showing the appearance of the writing instrument. FIG. 2 is a partially enlarged side view of the writing instrument showing the tip portion of the writing instrument. The figures show the components of the writing instrument, with (a) being a cross-sectional view taken along the central axis of the shaft portion, (b) being a plan view of the shaft portion, (c) being a cross-sectional view taken along the central axis of the cap body of the cap portion, (d) being a side view showing the cap body, (e) being a plan view showing the cap body, (f) being a side view showing the clip portion of the cap portion, and (g) being a side view showing the clip portion. The figures show the components of the writing instrument, with (a) being a cross-sectional view taken along the central axis of the tip fixing member located at the tip of the shaft portion, (b) being a plan view of the tip fixing member, (c) being a side view of the tip fixing member, (d) being a bottom view of the tip fixing member, (e) being a plan view of the ink tank fixing member located in the coaxial portion, (f) being a side view of the ink tank fixing member, (g) being a front view of the tail plug located at the rear end of the coaxial portion, and (h) being a plan view of the tail plug. The figures show the writing instrument in use, with (a) being an enlarged cross-sectional view of the writing instrument in use, (b) being a diagram showing the state in which a line mark is being written with the writing instrument, and (c) being a diagram showing the state in which a letter is being written with the writing instrument.

This section describes a writing instrument that is an embodiment of the present invention.

<Overall structure of writing instrument 10>
In this embodiment, the writing implement will be described as an example that can be used as a water-based highlighter line marking pen for writing mark lines and a water-based writing pen for writing characters and the like.
FIG. 1 is a vertical lateral cross-sectional view showing the internal structure of a writing instrument according to an embodiment of the present invention, FIG. 2 is a front view showing the external appearance of the writing instrument, and FIG. 3 is an enlarged partial view of the writing instrument showing the tip portion of the writing instrument.

As shown in Figures 1 and 2, the writing instrument 10 comprises a shaft portion 11 formed in an elongated cylindrical shape, and a cap portion 12. As shown in Figures 1 and 4(a) and (b), the shaft portion 11 is formed in a cylindrical shape from a known synthetic resin, and is tapered toward the tip. The shaft portion 11 is generally transparent or white, and the clip portion is colored the same as the mark line so that the color of the mark line can be identified.

As shown in Figures 4(a) and (b), inside the shaft 11, guide ridges 11a, 11a that hold the line marking ink tank 21 and the pen ink tank 31 (described later) are formed facing each other along the axial direction. In addition, two rows of fixing grooves that fix the tail plug 15 (described later) are formed on the inner surface of the rear end of the shaft 11.

At the tip of the shaft portion 11 , a line marking tip 24 as a first tip and a plastic pen tip 35 as a second tip are fixed by a tip fixing member 13 .
Furthermore, a tail plug 15 is fitted onto the rear end of the shaft portion 11. The line marking ink tank 21 and the pen ink tank 31 are held in position by ink tank fixing members 14, 14 at the front and rear ends of the shaft portion 11, respectively.

<Shaft portion 11>
As shown in Figures 1 and 2, a line marking ink tank 21, which is a first ink tank, is disposed inside the shaft portion 11. The line marking ink tank 21 is disposed in one radial half of the shaft portion 11 along the central axis O of the shaft portion 11. The line marking ink tank 21 is filled with water-based fluorescent line marking ink. The color of the fluorescent line marking ink can be appropriately selected from fluorescent yellow, fluorescent pink, fluorescent red, fluorescent blue, fluorescent green, etc.

In addition, inside the shaft portion 11, a pen ink tank 31, which is a second ink tank, is arranged in the other radial half, side by side with the line marking ink tank 21. The pen ink tank 31 is arranged in parallel with the central axis O of the shaft portion 11, side by side with the line marking ink tank 21. This pen ink tank 31 is filled with water-based pen ink as writing ink. The color of the water-based pen ink is appropriately selected, such as black, blue, red, pink, etc.

<Line marking ink tank 21>
1 and 3, a line marking insert 22 is inserted into a line marking ink tank 21, and this line marking insert 22 is continuous with a line marking extension 23, to which a first tip, a line marking tip 24, is further connected, and configured to supply ink to the line marking tip 24 and a plastic pen tip 35, respectively. The line marking insert 22, line marking extension 23 and line marking tip 24 are integrally formed from a resin ink-impregnated material.

3, in this example, the line marking chip 24 is disposed in the length direction along the central axis O of the shaft portion 11. The line marking chip 24 is formed in a generally thin plate shape with a laterally elongated rectangular shape, and is disposed on one radial end side of the shaft portion 11 along the central axis O in the width direction of the shaft portion.
In addition, the tip portion is formed at an angle in the radial direction so that the widthwise outer end portion 25a of the shaft portion is shorter in the axial direction than the widthwise inner end portion 25b, and is provided with a paper surface contact portion capable of marking a specified width dimension on the paper surface.

As a result, the writing instrument 10, like a normal line marking pen, can draw a mark line wider than the width dimension of the line marking tip 24 by drawing the translucent fluorescent ink from the line marking ink tank 21 by pressing the paper contact part 25 against the paper surface.

<Pen Ink Tank 31>
A pen insert 32 is inserted into the pen ink tank 31 and is connected to a pen extension 33 to which a plastic pen tip 35 is connected.
In this embodiment, the plastic pen tip 35 is formed into an elongated needle shape overall, and is covered except for its tip end by a metal pipe 34 whose base end is fixed to the tip fixing member 13 .
In this embodiment, the plastic pen tip 35 is disposed to the side of the widthwise inner end 25b of the line marking tip 24, in the opposite radial direction of the shaft 11 from the line marking tip 24, and inclined outwardly from the shaft 11 by a predetermined angle θ with respect to the central axis O of the shaft 11. The plastic pen tip 35 draws ink from the pen ink tank 31 and can draw letters, lines, etc.

As a result, the paper surface contact portion 25 of the line marking tip 24 and the plastic pen tip 35 are disposed at a distance d from each other.
When the user holds the writing instrument 10 with his/her fingers, he/she can simply rotate the writing instrument 10 in his/her hand around the central axis O in the axial direction to select whether to bring the line marking tip 24 into contact with the paper surface or the like to draw a mark line, or to bring the plastic pen tip 35 into contact with the paper surface or the like to draw a thin line such as a letter.
At this time, since the tips of the line marking tip 24 and the plastic pen tip 35 are arranged spaced apart by a distance d, a mark line by the line marking tip 24 and a thin line by the plastic pen tip 35 are not mistakenly drawn at the same time.

<Cap portion 12>
4(f) and (g), the cap portion 12 includes a cap portion main body 12a that is fitted onto the tip of the shaft portion 11, and a clip attachment portion 12b that is disposed on the cap portion main body 12a. A clip 16 is attached to the clip attachment portion 12b.

The cap body 12a is formed with two protrusions 12c, 12c that determine the position of the clip attachment part 12b. The clip attachment part 12b is also formed with a recess (not shown) that fits into the protrusions 12c, 12c of the cap body 12a.

<Chip fixing member 13>
As shown in Figures 5(a) to (d), the tip fixing member 13 is formed with a marker tip hole 13a into which the line marking tip 24 is inserted, a plastic pen tip hole 13b into which a plastic pen tip 35 covered by a metal pipe 34 is inserted, and an anti-rotation groove portion 13c which fits into a convex portion (not shown) formed on the upper end surface of the shaft portion 11.

<Ink Tank Fixing Member 14>
The ink tank fixing member 14 is a member that holds the line marking ink tank 21 and the pen ink tank 31 in parallel at two positions, upper and lower, inside the shaft portion 11, as shown in FIG.
As shown in Figures 5 (e) and (f), the ink tank fixing member 14 is formed with two ink tank holding recesses 14a, 14a into which the line marking ink tank 21 and the pen ink tank 31 are fitted, and two annular grooves 11b, 11b that fit into the guide protrusions 11a, 11a of the shaft portion 11.

<Tail plug 15>
As shown in Fig. 1, the tail plug 15 is a member that closes the rear end of the shaft portion 11. As shown in Figs. 5(h) and (d), the tail plug 15 is a substantially cylindrical member, and is made of the same synthetic resin material as the shaft portion 11. The tail plug 15 has a cap holding protrusion 15a into which the cap portion 12 is inserted and held, and annular protrusions 14b, 14b are formed on the outer periphery above the cap holding protrusion 15a, which fit into annular grooves 11b, 11b of the shaft portion 11 to prevent the tail plug 15 from coming off the shaft portion 11.

The cap portion 12, the tip fixing member 13, the ink tank fixing member 14, and the tail plug 15 can be made of the same synthetic resin material as the shaft portion 11.

<How to use the writing instrument 10>
The writing instrument 10 having the above-mentioned configuration is used as follows: Figure 6 shows the state in which the writing instrument is used, where (a) is an enlarged cross-sectional view of the writing instrument in use, (b) is a diagram showing the state in which a line mark is being written with the writing instrument, and (c) is a diagram showing the state in which a character is being written with the writing instrument.

To draw a line mark 41 using the line marking tip 24 of the writing instrument 10, the cap portion 12 is removed from the writing instrument 10 to expose the line marking tip 24 and the plastic pen tip 35, as shown in FIG. 6(a).
6B, the writing instrument 10 is tilted so that the line marking tip 24 comes into contact with the paper surface P. This makes it possible to draw a line mark 41 on the paper surface P.
At this time, as shown in the figure, the plastic pen tip 35 is located to the side of the widthwise inner end 25b of the line marking tip 24, and is therefore located above the line marking tip 24 and is separated from the paper surface P, and does not contact the paper surface P. Therefore, the user can freely perform line marking without being aware of the presence of the plastic pen tip 35.

To write a character 42 using the writing instrument 10 from this state, the writing instrument 10 is rotated a half turn in the circumferential direction of the shaft 11 along the central axis O, and the plastic pen tip 35 is brought into contact with the paper surface P, as shown in Fig. 6(c) . This allows the character 42 or the like to be written on the paper surface P.
In this case, the plastic pen tip 35 is formed on the widthwise side of the line marking tip 24, inclined radially outward from the shaft portion 11, so that it protrudes toward the paper surface, allowing the user to easily write characters.
At this time, as shown in the figure, the line marking tip 24 is located above the plastic pen tip 35, that is, on the radially opposite side of the shaft portion 11 of the plastic pen tip 35, and therefore does not come into contact with the paper surface.

As described above, with the writing instrument 10 according to this embodiment, a user can easily distinguish between mark lines and characters by holding one writing instrument 10 and rotating it.

<Assembly of the writing instrument 10>
To assemble the writing instrument 10, first, the line marking insert 22, the line marking extension 23, and the line marking tip 24 are attached to the line marking ink tank 21. Also, the pen insert 32, the pen extension 33, and the plastic pen tip 35 covered by a metal pipe 34 are attached to the pen ink tank 31.

Then, the line marking ink tank 21 and the pen ink tank 31 are connected and integrated with the two ink tank fixing members 14, 14, and then inserted into the shaft portion 11, and the tip fixing member 13 is attached to the top of the shaft portion 11, and the tail plug 15 is attached to the bottom. The cap portion 12 is then attached, and the assembly of the writing instrument 10 is complete. The assembly process of this writing instrument 10 is the same as that of a normal one-color line marking pen. Therefore, the writing instrument 10 of the present invention can reduce assembly costs.

<Other embodiments>
In the above embodiment, the line marking ink tank 21 is filled with a water-based fluorescent line marking ink, but the ink filled in the line marking ink tank 21 may be an oil-based ink.

In the above embodiment, the pen ink tank 31, which is the first ink tank, is filled with water-based ink, but this may also be oil-based ink.
Furthermore, although the pen ink tank 31, which is the second ink tank, is filled with water-based ink, this may be oil-based ink. And, although an example in which the plastic pen tip 35 is used as the second tip has been described, other tips such as a felt pen tip or a ballpoint pen tip may be used as the second tip.

In the above embodiment, the line marking tip 24 is arranged along the central axis O of the shaft 11, and the plastic pen tip 35 is arranged at an angle to the central axis O. However, this is not limited to this embodiment, and the plastic pen tip 35 may be arranged along the central axis O of the shaft 11, and the line marking tip 24 may be arranged at an angle to the central axis O.

The writing instrument of the present invention can be used as both a line marking pen and a writing pen by simply rotating the writing part in the hand along its axial direction without requiring any major movements, and has a wide range of industrial applicability.

10: Writing implement 11: Shaft 11a: Guide ridge 11b: Annular groove 12: Cap 12a: Cap body 12b: Clip attachment 12c: Protrusion 13: Tip fixing member 13a: Marker tip hole 13b: Plastic pen tip hole 13c: Groove 14: Ink tank fixing member 14a: Ink tank holding recess 14b: Annular protrusion 15: Tail plug 15a: Cap holding protrusion 16: Clip 21: Line marking ink tank 22: Line marking insertion section 23: Line marking extension 24: Line marking tip 25: Paper contact section 31: Pen ink tank 32: Pen insertion section 33: Pen extension 34: Metal pipe 35: Plastic pen tip 41: Line mark 42: Characters

Claims (6)

The shaft portion and the cap portion are provided.
The tip of the shaft portion is provided with a first tip for line marking and a second tip for thin line writing,
one of the first tip and the second tip is disposed along a central axis of the shaft portion, and the other of the first tip and the second tip is extended at an angle to the central axis, and a tip of the first tip and a tip of the second tip are disposed with a gap therebetween;
A writing instrument characterized in that a first ink tank that supplies translucent line marking ink to the first tip and a second ink tank that supplies writing ink to the second tip are disposed inside the shaft portion. The writing instrument according to claim 1, characterized in that the first tip is formed in a generally thin plate shape, a laterally elongated rectangle, and is arranged along the width direction of the shaft portion along the central axis, while the second tip is formed in a generally elongated needle shape and is arranged at an angle outwardly from the shaft portion on the width direction side of the first tip. the first tip is a line marking tip having a tip portion formed to be inclined obliquely in the width direction such that an outer end portion in the width direction of the shaft portion is shorter in the axial direction than an inner end portion in the width direction, and having a paper surface contact portion capable of marking a paper surface with a predetermined width dimension;
The writing instrument described in claim 1, characterized in that the second tip is arranged on the side of the widthwise inner end of the first tip, inclined in the opposite direction to the first tip, and is a felt pen tip capable of very fine writing, or a plastic pen tip capable of line drawing and covered with a metal pipe. The writing instrument according to claim 1, characterized in that the ink filled in the first ink tank and the second ink tank is water-based or oil-based. The writing instrument according to claim 1, characterized in that the first tip and the second tip are arranged on the shaft portion via a tip fixing member that fixes the positions of the first tip and the second tip. the shaft portion includes a guide protrusion portion on an inner peripheral surface portion thereof for guiding and holding the first ink tank and the second ink tank at predetermined positions parallel to the central axis of the shaft portion,
a tip fixing member disposed at a tip of the shaft portion and fixing the positions of the first tip and the second tip;
an ink tank fixing member disposed inside the shaft portion and configured to fix the positions of the first ink tank and the second ink tank;
2. The writing implement according to claim 1, further comprising a tail plug disposed at a rear end of the shaft portion, into which the cap portion is fitted and held when the writing implement is in use.