JP2002283783A - Writing implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate change in holding a writing implement due to the change in writing height position when writing on a vertical face. SOLUTION: The writing implement is constituted containing a main body 12 extending longitudinally and having a penpoint part 11 at the front end side. The main body 12 has a weight structure with its center of gravity being located at a rear end side from the center C in the longitudinal direction of the main body 12. The penpoint part 11 is provided rotatably so that it may face toward an upward inclined direction holding the penpoint part 11 side rather than the center C between finger tips.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a writing instrument, and more particularly to a writing instrument suitable for writing on a vertical surface such as a whiteboard.

[0002]

2. Description of the Related Art Conventionally, as a writing instrument for writing on a vertical surface such as a white board, a writing instrument having a main body having a pen tip portion at a front end side is known. This type of writing implement has a weight structure in which the center of gravity is located on the front end side of the main body due to a structure for holding the pen tip portion or the like.

[0003] When writing on a vertical surface using the above-mentioned writing instrument, although there are individual differences, the pen tip side of the main body is grasped and held with a thumb, forefinger and middle finger, or the pen tip side of the main body is thumb and forefinger. It is common to hold the rear end side of the main body with another finger. In these holding styles, when writing above the height of the chest, writing can be done without hindrance, but when writing below the chest or belly, the wrist should not be in an unreasonable posture. It is necessary to change the pen tip upward.

[0004]

However, when carrying out the above-mentioned holding, since the center of gravity is located at the front end of the main body, simply holding the front end without holding the rear end of the main body causes the pen tip to face upward. Disadvantageously that it is difficult to rotate in the direction of This makes it difficult to write when writing at a position below the chest or abdomen. In addition, the work of holding the main body must be performed with both hands, resulting in inconvenience that the writing operation becomes extremely complicated.

[0005]

SUMMARY OF THE INVENTION The present invention was devised in view of such inconvenience, and its object is to make it possible to easily turn a pen point upward when writing on a vertical surface. It is an object of the present invention to provide a writing instrument that allows the user to easily switch the main body depending on a writing position.

[0006]

In order to achieve the above object, the present invention provides a writing instrument comprising a body extending in a longitudinal direction and having a pen tip portion at a front end side and suitable for writing on a vertical surface. A weight structure is provided in which the center of gravity is located on the rear end side from the center in the longitudinal direction of the main body. According to such a configuration, when writing on a vertical surface such as a whiteboard, if the rear end of the main body does not have the rear end side, the rear end rotates downward, so that the pen tip can be easily turned upward. Can be. Thus, when writing at a position below the chest or abdomen, it is possible to easily switch the main body, and the writing operation can be performed smoothly without the burden on the wrist.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the main body has a mark on the pen tip side from the center of the main body, and the pen tip portion faces upward with the mark position held between fingertips. A configuration in which a weight structure rotatable in the direction is provided is also preferably adopted. With such a configuration, the user can be made to recognize the grip position when writing at a low position on the vertical plane. Also, when writing while holding the mark position between the thumb and forefinger and grasping the rear end of the main body with another finger, release the grip of the other finger,
Since the pen tip is automatically rotated in the upward direction, it is possible to easily and quickly change the holding position by changing the writing position.

Further, a configuration in which a weight is provided on the rear end side of the main body can be adopted. With such a configuration, the rotation can be performed smoothly, and the appearance of the weight is not impaired by disposing the weight in the main body.

Further, a configuration is also adopted in which the main body is provided in a shape that becomes thicker toward the rear. In such a configuration, the rotation of the pen tip portion upward can be permitted only by changing the shape of the main body.

It is preferable that the main body has a substantially elliptical cross-sectional shape. According to such a configuration, by holding both side surfaces along the minor axis direction of the ellipse with a fingertip, a large contact surface of the fingertip can be secured, thereby realizing stable gripping of the main body, Rotation with the pen point upward can be performed stably, and rotation of the main body in the circumferential direction during writing can be prevented, so that writing on a vertical surface can be performed smoothly.

In this specification, the term “before”, which is a term indicating a position or a direction, unless otherwise specified.
It is used on the pen tip side of the writing implement, and "rear" is used on the opposite side of the longitudinal direction.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 shows a schematic front view when a writing instrument according to the first embodiment is applied to a water-based marker, and FIG. 2 shows a plan view thereof. I have. In these figures, a writing instrument 10 extends in the longitudinal direction and has a pen tip portion 11 at a front end side, and a pen tip portion 11 of the main body 12 is detachably provided on the pen tip portion 11 side to attach the pen tip portion 11 to the main body 12. And a cap 13 for covering.

Although the detailed structure of the pen tip portion 11 is omitted here, in this embodiment, a known structure is employed in which ink stored in the main body 12 is impregnated to enable writing.

The main body 12 is, as shown in FIG.
It has a substantially elliptical cross-sectional shape, and both side surfaces along the minor axis direction of the ellipse, that is, both right and left side surfaces in FIG.
2A, and is provided in a hollow shape capable of storing ink and the like inside. As shown in FIG. 1, the main body 12 has a shape that becomes thicker toward the rear, so that the center of gravity of the entire main body 12 is located at the center position C in the longitudinal direction (the horizontal direction in FIG. 1) of the main body 12. The weight structure is located on the rear end side. The main body 12
Various design changes are possible as long as the center of gravity of the entire main body 12 is located on the rear end side.
The position of the center of gravity may be set by providing a weight on the rear end side in 2.

At the rear portion of the side wall 12A on the left side in FIG. 3, a holding portion 15 capable of holding the rear end side of the cap 13 during writing is provided. The holding portion 15 includes a concave portion 17 having an inner diameter capable of receiving the rear end side of the cap 13, and a projecting portion 18 provided in the concave portion 17 and capable of fitting with the inner periphery of the cap 13. It is configured. A substantially circular mark 19 as viewed from the front is provided on the front end side of each of the side walls 12A, 12A, and the mark 19 is not particularly limited.
It is applied by printing directly on the surface or drawing a circle by molding.

While the cap 13 has a substantially hemispherical tip side, when it is mounted on the holder 15,
It is directed in a direction substantially perpendicular to the longitudinal direction of the main body 12 (the horizontal direction in FIG. 4) and is provided so as to protrude from the side wall 12A.

With the above configuration, when writing on a vertical surface such as a whiteboard using the writing instrument 10, for example, when writing on a vertical surface above the chest, as shown in FIG. A mode in which the pen tip 11 side of the main body 12 is held by the thumb, the index finger and the middle finger of the right hand in the figure, or as shown in FIG. 6, the pen tip 11 side of the main body 12 is held between the thumb and the index finger. In this embodiment, the rear end side of the main body 12 is held by another finger and the palm. At this time, when the cap 13 is held so as to be located on the near side in FIG. 6, the tip end side of the cap 13 presses the belly of the thumb and a massage effect can be obtained, while the cap 13 is located on the depth side in FIG. Is held so that the cap 13 is held by the ring finger and the little finger. When writing at a position below the chest or abdomen from this state, as shown in FIG. 7, the main body 12 is held with the main body 12 sandwiched between the thumb and the index finger.
2 Release the holding on the rear end side. At this time, since the center of gravity of the main body 12 is on the rear end side, the pen tip portion 11 rotates so as to face upward, so that the writing can be performed without a cramped posture and without a burden on the wrist.

Therefore, according to the first embodiment, since the center of gravity of the main body 12 is located on the rear end side of the main body 12, as shown in FIG. The rear end automatically rotates downward, so that the user can easily change the holding position by changing the writing position. The cross-sectional shape of the main body 12 is substantially elliptical, and
A and 12A are provided with marks 19 so that the user can
2 naturally has the position of the mark 19 on the front end side, whereby the rotation can be performed smoothly.

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIGS. In the following description, the same reference numerals are used for the same or equivalent components as those of the first embodiment as needed, and the description is omitted or simplified.

In the second embodiment, the tail plug 2 is provided on the rear end side of the main body 12 without providing the holding portion 15 on the side wall 12A.
0, and the cap 13 is detachably provided on the tail plug 20. This also
When the main body 12 can be rotated in the same manner as in the first embodiment, and the cap 13 is attached to the tail plug 20, the position of the center of gravity is located further rearward, and the rotation can be performed more smoothly. Becomes possible.

In each of the above-described embodiments, an example in which the present invention is applied to a water-based marker is illustrated and described. It is also possible to apply to the writing implements.

[0023]

As described above, according to the present invention,
Since the center of gravity of the main body is located at the rear end side from the center in the longitudinal direction of the main body, if the main body has no rear end side, the rear end side can be rotated downward, and the pen tip portion can be rotated. It can be easily turned upward. This allows
When performing a writing operation at a position below the chest or abdomen, the wrist does not assume an unreasonable posture, and writing can be performed smoothly.

Also, the main body has a weight structure that can be rotated in a direction in which the pen tip is upward while holding the mark position located on the pen tip side from the center of the main body. The user can recognize the grip position when writing at a low position on the vertical plane. In addition, when the mark position is sandwiched between the thumb and the index finger and the grip of the other finger is released, the pen tip automatically turns upward, so that it is possible to easily and quickly change the writing position by changing the writing position.

Further, when a weight is provided on the rear end side of the main body, the main body can be smoothly rotated, and by providing the weight in the main body, it is possible to maintain a good appearance in appearance. It becomes possible.

Further, when the main body is formed to have a shape that becomes thicker toward the rear, rotation with the pen tip portion upward can be permitted only by changing the design of the main body.

Further, since the main body has a substantially elliptical cross-sectional shape, the contact surface of the fingertip is largely secured by sandwiching both side surfaces along the minor axis direction of the ellipse with the fingertip. Stable gripping can be realized, and rotation with the pen tip portion facing upward can be stably performed.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a writing instrument according to an embodiment.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is an enlarged end view taken along line AA of FIG. 2;

FIG. 4 is a plan view similar to FIG. 2, showing a state in which a cap is mounted on a side wall.

FIG. 5 is a front view showing a state in which writing is performed on a vertical surface by the writing instrument.

FIG. 6 is a front view showing a state in which the writing instrument is written by another holding method.

FIG. 7 is a front view showing a state in which the pen tip is rotated upward from the state of FIG. 6;

FIG. 8 is a schematic front view of a writing instrument according to a second embodiment.

FIG. 9 is a plan view of FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Writing implement 11 Pen tip part 12 Main body 19 Mark

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shigeru Kinoshita 6-1-1 Oimazato Minami, Higashi-Nari-ku, Osaka-shi Kokuyo Corporation

Claims (5)

[Claims] 1. A writing instrument suitable for writing on a vertical surface, comprising a body extending in the longitudinal direction and having a pen tip portion on a front end side, wherein a center of gravity is located on a rear end side from a longitudinal center of the body. A writing implement characterized by having a structure. 2. The main body has a mark on the pen tip side from the center of the main body, and a weight rotatable in a direction in which the pen tip is upward in a state where the mark position is held between fingertips. The writing implement according to claim 1, further comprising a structure. 3. The writing instrument according to claim 1, wherein a weight is provided on a rear end side of the main body. 4. The writing instrument according to claim 1, wherein the main body is provided in a shape that becomes thicker rearward. 5. The writing instrument according to claim 1, wherein the main body has a substantially elliptical cross-sectional shape.