JP2010247349A - Marking pen - Google Patents

Abstract

Kind Code: A1 A marking pen having excellent linear writing performance even in a vibration environment such as in a train or an automobile or in an environment without a ruler is provided. In a cap-type marking pen having a pen core 4 of 2 mm or more, a roller 5 made of an elastic body that can be accommodated in the cap 2 is attached in the vicinity of the pen core 4, and a tangent X3 between the pen core 4 and the roller 5 is A marking pen whose angle θ formed with the center line X4 of the pen shaft 1 is 30 ° to 80 °.
[Selection] Figure 5

Description

The present invention relates to a marking pen.

Conventionally, a large number of marking pens have been filed in which ink can penetrate into a pen core made of a fiber core, a plastic core, or a sintered core to perform linear writing. (Patent Document 1)
However, it is not easy to draw a straight line along a character even though the fluorescent line marker is a writing instrument that marks a character typed on a straight line. As a general measure, if you use a ruler and write along the ruler, it is easy to draw a straight line, but you may forget to carry it because it is not an integral part of the marker. In such a case, particularly when marking in an environment where the vehicle is traveling, such as in a train or an automobile, it becomes difficult to draw a straight line due to vibration transmitted in the vehicle.
In order to solve the above problems, various documents are disclosed. However, although a rotatable wheel is attached in the vicinity of the writing part, the mechanism is complicated and inferior in portability (Patent Document 2), the application part itself is a roller, and linearity is improved from the conventional product. However, since the roller is rotating during writing, there is a difficulty in supplying ink to the roller (Patent Document 3, Patent Document 4), and the cap near the coating part has a posture control function and is stable. However, since there is no rotating body that guides the movement at the time of writing, there is a problem that the line drawing performance is poor (Patent Document 5).

JP 2000-52682 A Japanese Patent Publication No.57-5197 JP-A-6-312597 Japanese Patent No. 3310456 Utility model No. 3032752

In view of the above-described problems of the prior art, the present invention intends to solve this problem, and an object thereof is to provide a marking pen excellent in linear writing performance even in an environment without a ruler or in a vibration environment. To do.

As a result of intensive studies on the above-described problems of the prior art, the present inventors have completed the present invention. That is, this invention corresponds to following (1)-(5).
(1) In a pen with a pen shaft, a pen tip having a pen core made of a fiber core, a plastic core or a sintered core at the tip of the pen shaft, and a marking pen attached with a cap covering the outer periphery of the pen tip. A marking pen with a roller that can be stored in the cap.
(2) The marking pen according to (1), wherein the pen core is formed in a chisel shape, and the ridge line at the end of the pen core and the center line of the roller are parallel to each other.
(3) The marking pen according to (2), wherein the roller is formed of an elastic body.
(4) The marking pen according to (3), wherein a tangent line between the pen core and the roller is inclined by 30 ° to 80 ° with respect to a center line of the pen shaft.
(5) The marking pen according to (4), wherein the pen core has a width of 2 mm or more.

According to the present invention, the following effects can be obtained.
According to the invention described in (1), since the roller serves as a guide for writing, a beautiful straight line can be drawn without a ruler.
According to the invention described in (2), since the tip of the pen core serves as a guide, a beautiful straight line can be drawn without a ruler.
According to the invention described in (3), since the roller absorbs vibration by using an elastic body for the roller, a stable straight line can be written even under vibration.
According to the invention described in (4), it is possible to cope with an angle at which writing is actually performed by making the roller attached obliquely with respect to the pen core.
According to the invention described in (5), a more stable straight line can be written by widening the tip of the pen core.
According to the present invention as described above, it is possible to draw a more beautiful straight line in an environment without a ruler or an environment under vibration as compared with the conventional technique.

1 is an overall view of the present invention. 1 is an overall view of a product with a cap removed according to the present invention. It is a front enlarged view of the nib part of the present invention. It is an enlarged view from the bottom of the nib part of this invention. It is an enlarged view of the nib part of the writing state of this invention. It is component drawing of the nib of this invention. It is component drawing of the front axis | shaft of this invention. It is a drawn state of the product of the present invention written without using a ruler. It is a drawing state of a conventional product written without using a ruler.

Next, embodiments of the present invention will be described with reference to the drawings.
In the present application, the direction on the pen tip side to be written is “front”, and the opposite direction is “back”.

FIG. 1 shows an assembly drawing when the embodiment of the present invention is assembled as a writing instrument.
FIG. 1 is an overall configuration diagram of the present invention.
This is a very common cap-type marking pen in which a cap 2 is fitted to the pen shaft 1 to prevent the pen tip from drying. Ink is stored in the pen shaft 1. The ink is not particularly limited as long as it is a conventionally used ink that can be written.

Next, FIG. 2 in which the cap is removed from the marking pen of FIG. 1 will be described.
2 (a) is a left side view of FIG. 2 (c), FIG. 2 (b) is a plan view, FIG. 2 (c) is a front view, and FIG. 2 (d) is a view from the bottom of FIG. 2 (c). It is.
A pen tip is fitted in front of the pen shaft 1. The pen tip corresponds to the tip 3, the pen core 4 attached to the tip 3, and the roller 5.

3 is an enlarged view of the pen tip in FIG. 2C, and FIG. 4 is an enlarged view of the pen tip in FIG.
The tip shaft 3 is fitted to the pen shaft 1. The pen core 4 is inserted into the front shaft 3 with the writing portion protruding from the front of the front shaft 3 and fixed by press-fitting. The roller 5 attaches the main shaft 51 to a hole formed in the attachment portion 31 which is a substantially semicircular plate formed on the inclined surface 32 of the front shaft 3 so that the roller 5 can rotate.
The number of rollers is preferably two in the embodiment of the present invention, but is not particularly limited.
As shown in FIG. 4, the edge line X1 of the end of the pen core 4 and the center line X2 of the roller 5 are configured to be substantially parallel. In order to write a stable straight line, it is desirable to make it substantially parallel. Here, “substantially parallel” means an inclination of ± 10 °. If it is tilted further, the entire surface of the roller cannot contact the paper surface during writing, and it is difficult to obtain a stable straight line.
The roller mounting position is not particularly limited as long as it is in the vicinity of the pen tip and does not interfere with writing. When attached, comfortable writing operation is possible.

FIG. 5 is a state diagram in which the product of the present invention is written on paper.
At the time of writing, in order to obtain a stable writing line, it is desirable to bring the edge line X1 of the end of the pen core 4 and the roller 5 into contact with the paper surface. The writing angle θ between the ridgeline X1 and the line X3 where the roller 5 is in contact with the paper surface and the center line X4 of the pen shaft 1 is preferably 30 ° to 80 °. This is because if the angle is less than 30 °, the ink will not be sufficiently transmitted to the paper even if written. In the case of 80 ° or more, since the roller 5 does not come into contact with the paper surface, normal writing and writing can be performed as in the conventional marking pen. Therefore, the mounting position of the roller 5 is arranged so that the writing angle θ is 30 ° to 80 ° so that the same writing as before can be obtained.

FIG. 6 is a component diagram of the pen tip. 6 (a) is a left side view of FIG. 6 (c), FIG. 6 (b) is a plan view, FIG. 6 (c) is a front view, and FIG. 6 (d) is a view from the bottom of FIG. 6 (c). It is.
The pen core 4 protrudes from the rear side of the tip shaft 3 because the pen core 4 comes into contact with ink when the pen tip is fitted to the pen shaft 1 and ink is supplied by capillary action.
Each component of the pen tip will be described.
The joint 3 is a part for fitting the pen core 4 and the roller 5 to the pen shaft 1 after the pen tip is configured. The material is formed of a very general thermoplastic resin such as polypropylene, ABS, polyacetal or the like.
The material of the pen core 4 is formed of a fiber, a plastic core, or a sintered core so that ink can be sufficiently supplied, and is a marking pen tip material that is generally used. The tip shape of the pen core is formed in a chisel shape. The chisel shape is a shape in which the tip forms an inclined surface with respect to the center line of the pen shaft 3 and the inclined surface is flat. The width of the flat portion on the inclined surface is the line width to be written, and the width is desirably 2 mm or more. A width of the pen core 4 of less than 2 mm is undesirable because it lacks the stability of straight writing.
The roller 5 will be described. The roller 5 is attached to the main shaft 51. The main shaft 51 has a constricted shape at the center, and the constricted portion can be fitted into the attachment portion 31 of the joint 3. If the main shaft 51 is rotatable, the roller 5 is also rotatable. A method for attaching the roller 5 to the main shaft 51 is not particularly specified unless it is easily detached from the main shaft 51 such as adhesion, bonding, press-fitting, or the like. The material of the roller 5 is not particularly limited as long as the roller rotates, but if desired, an elastic body such as a resin or an elastomer that is a material that absorbs vibration is desirable. The size of the roller 5 is a range that can be accommodated by the cap 2 having a size that is used for writing instruments existing in the conventional market, and a diameter of about 2 mm to 5 mm is desirable.

FIG. 7 is a component diagram of the tip shaft 3.
7 (a) is a left side view of FIG. 7 (c), FIG. 7 (b) is a plan view, FIG. 7 (c) is a front view, and FIG. 7 (d) is a view from the bottom of FIG. 7 (c). 7 (e) is a right side view of FIG. 7 (c), and FIG. 7 (f) is a rear view of FIG. 7 (c).
The front shaft 3 is formed with an inclined surface 32 which is a shape cut off from a cylindrical outer shape, an attachment portion 31 which is a substantially semicircular plate perpendicular to the plane of the inclined surface 32 is formed, and the attachment portion A spindle attachment port 33 is formed in front of 31. The main shaft attachment port 33 is formed in a circular shape when viewed from the front, and a constricted portion of the main shaft 51 integrated with the roller 5 is fitted and rotatable. A square hole is formed from the front to the rear of the front shaft 3, and the pen core 4 can be engaged with the hole. The outer shape of the front shaft 3 is formed to be slightly larger than the inner diameter of the front shaft mounting portion of the pen shaft 1 so that the outer shape of the front shaft 3 is not easily detached even if it is attached to the pen shaft 1.

A comparison of drawn lines between the product of the present invention and the conventional product is shown in FIGS. On the train, the same person wrote a straight line without using a ruler with paper on the underlay. The three bold lines in the figure are drawn with a marking pen. As shown in the figure, a straight line written using the product of the present invention can be written by pressing a roller against the paper surface, so that a beautiful straight line can be obtained even in an environment where there is an external factor such as vibration. A straight line written using a conventional product does not have a function of guiding during writing, and thus becomes a distorted straight line, and a beautiful straight line like the product of the present invention cannot be obtained.

As described above, the present invention can provide the drawing of a beautiful straight line even in an environment without a ruler or an environment under vibration, which is useful for industry.

DESCRIPTION OF SYMBOLS 1 Pen shaft 2 Cap 3 Lead shaft 4 Pen core 5 Roller 31 Attachment part 32 Inclined surface 33 Main shaft attachment port 34 Pen tip insertion hole 51 Main axis X1 Pen core edge line X2 Roller center line X3 Pen core with writing Roller tangent line X4 Pen axis center line D Distance between the edge of the pen core edge and the roller center line θ Writing angle

Claims (5)

A marking pen with a pen shaft, a pen tip having a fiber core, a plastic core or a sintered core at the tip of the pen shaft, and a cap that covers the outer periphery of the pen tip. Marking pen with a roller that can be stored in. The marking pen according to claim 1, wherein the pen core is formed in a chisel shape, and a ridge line at an end of the pen core and a center line of the roller are substantially parallel. The marking pen according to claim 2, wherein the roller is formed of an elastic body. The marking pen according to claim 3, wherein a tangent line between the pen core and the roller is inclined at 30 to 80 degrees with respect to a center line of a pen shaft. The marking pen according to claim 4, wherein the width of the pen core is 2 mm or more.

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