JP2002096594A - Grip cover for barrel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve problems of obtaining insufficient contact feeling by a mere knurling pattern of a grip cover for a barrel, an easy fatigue by the use of the barrel for a long period and occurrence of a callus on a finger from writing in an extreme case. SOLUTION: The grip cover 1 for the hollow barrel is mounted on at least a grip part of the barrel for constituting a writing instrument or the like. The grip cover 1 comprises a substantially flat part 2 formed on the surface of the cover 1 in a width direction in which the finger is contacted with the surface of the cover 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grip cover for a shaft cylinder to be mounted on a grip portion (grip portion) of a shaft body constituting a writing instrument such as a ballpoint pen and a mechanical pencil.

[0002]

2. Description of the Related Art Conventionally, as this type of grip cover for a barrel, grip covers of various shapes have been proposed from the viewpoints of design and use. For example, there has been proposed a grip cover in which various knurls (notches) are provided on the outer peripheral surface.

However, most of these are repetitions of the same pattern or symmetric patterns on the outer peripheral surface formed in a cylindrical shape. However, when considering the contact form between the finger and the grip cover when gripping an actual barrel such as a writing implement, a force is applied particularly to the side of the tip of the middle finger, and a so-called pen can be formed by prolonged use. There was sometimes.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks, and provides a comfortable feeling during use irrespective of the user's pen pressure. An object of the present invention is to provide a grip cover for a shaft cylinder that does not stick out even when used for a long time and that does not become unnecessarily fatigued.

[0005]

To achieve the above object, a grip cover for a barrel of the present invention is a hollow grip cover attached to at least a grip portion of a barrel constituting a writing instrument or the like. A substantially flat portion is formed on the surface of the grip cover in the width direction in which a finger abuts.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a grip cover for a barrel according to the present invention.

FIGS. 1 to 9 are views showing an embodiment of a grip cover for a shaft cylinder of the present invention. In the figure, a grip cover 1 is formed of a hollow cylindrical body made of an elastic material such as rubber or soft synthetic resin.

A flat portion 2 is provided on a part of the outer periphery of the grip cover 1 over the entire length in the longitudinal direction. More specifically, as is clear from the cross-sectional views of FIGS. 2 to 4, the inner periphery is formed in a circular shape in accordance with the outer periphery of the shaft cylinder, and a flat portion 2 is formed in a part of the outer periphery in the width direction. ing.

The flat portion 2 is formed of an inclined surface that gradually descends from both the front end and the rear end toward the middle portion in the longitudinal direction, and has a wide middle portion.

Further, as is apparent from the side view of FIG. 1, the flat portion 2 has tops 3 and 4 formed at positions slightly apart from the front end and the rear end, respectively, when mounted on the barrel. And it has slope parts 5 and 6 which descend from these top parts 3 and 4 toward the front end or the rear end, respectively.

More specifically, as will be described later, the top portion 3 of the grip cover portion located rearward when mounted on the barrel of the writing instrument forms a gentle slope portion 5 in the longitudinal direction. On the other hand, the top portion 4 of the grip cover portion located on the front side forms a slightly steep slope portion 6 in the longitudinal direction.

An intermediate portion 7 of a gentle recess is formed in a portion near the front projection between the tops 3 and 4. And the intermediate portion 7 forming this gentle concave portion
Are formed with a plurality of nonslip grooves 8 (six in the figure) in the width direction. In addition, both ends of these grooves 8 are formed in a curved portion (arc shape). Further, a cylindrical portion 9 is formed adjacent to the plurality of grooves 8 in the width direction of the flat portion 2, and the cylindrical portion 9 is similarly formed with a plurality of narrow grooves in the width direction (all of the grooves in the figure). 5) are formed.

As is apparent from the cross-sectional view taken along the line AA in FIG. 6, at the rear part of the grip cover 1, the flat part 2 located at the upper part of the drawing has a large thickness. The outer wall forms a gentle slope in the longitudinal direction.

As is apparent from the cross-sectional view taken along the line BB of FIG. 7, the thickness of the flat portion 2 at the center in the longitudinal direction of the grip cover 1 is extremely thin, and the intermediate portion 7 forms a thin concave portion. Has become.

Further, as is apparent from the sectional view taken along the line CC of FIG. 8, cylindrical portions 9 are formed on both sides of the thick flat portion 2.

As is apparent from the cross-sectional views of FIGS. 6 and 8, the outer periphery and inner periphery of the grip cover 1 are formed in a concentric cylindrical portion 9 except for the flat portion 2, so that the grip cover 1 is gripped. The front part and the rear part of the flat part 2 where the middle finger abuts sometimes are formed in a thick part. In the cross-sectional view of FIG. 7, since the flat portion 2 is formed as a thin portion, the outer periphery of the intermediate portion 7 of the flat portion 2 is lower than the front and rear portions, and this portion becomes a concave portion and is held. Sometimes fingertips are easier to fit.

Next, FIG. 9 is a side view showing a side knock type writing instrument to which the grip cover 1 according to the present invention is attached, in which a hand portion of a writer is indicated by a dotted line for convenience of explanation. More specifically, the grip cover 1 is disposed between a side knock button 20 provided on the side wall of the shaft main body of the writing instrument so as to be freely pressed, and a front tool portion 30 in front of the side knock button 20.

When writing, the writer grips the grip cover 1 with his fingertips to write. In this gripping state, the middle finger is positioned on the back of the grip cover 1, the tip side wall of the middle finger on which the writer applies the most force is pressed against the flat portion 2, and the middle finger is moved between the front and rear protrusions 3, 4. Is located in the middle portion 7 of the gentle concave portion.

In addition, the thumb and forefinger, which are located on the opposite side of the middle finger with respect to the grip cover 1 to which another gripping force is applied, have narrow grooves 10 each having a non-slip function.
Contacted. Therefore, a stable grip can be obtained, and the fingertip can fit the grip cover 1 very well. Therefore, there is an advantage that even if writing is performed for a long time, a pen or the like cannot be formed and fatigue is hardly caused.

FIGS. 10 and 11 show a grip cover 1 for a barrel according to another embodiment of the present invention. The grip cover 1 for a shaft cylinder according to this embodiment includes a non-slip portion 40 having a deformed elliptical shape whose front portion is widened in the longitudinal direction instead of forming a plurality of narrow grooves 10 in the width direction in the cylindrical portion 9 other than the flat portion 2. Has formed. With such a structure, the thumb and the forefinger can be securely held by abutting on these irregularly shaped elliptical anti-slip portions 40 during gripping.

Also in the shaft cylinder grip cover 1 configured as described above, similar effects can be obtained by being mounted on the shaft main body in the same manner as in the above embodiment.

In the above-described embodiment, the inner periphery of the grip cover 1 has a circular shape in conformity with a shaft cylinder having a generally circular cross section. However, the present invention is not limited to this. A shape other than a circle may be used according to the shape. The point is that the shape of the outer shape of the grip cover for the shaft cylinder is the gist of the present invention.

It is sufficient that the grip cover 1 covers at least the grip portion of the barrel,
It goes without saying that the entire length of the shaft cylinder other than the grip may be covered.

Further, in the above embodiment,
I explained the grip cover of the knock type writing instrument,
Obviously, the present invention can be applied to other writing instruments and grip covers such as electronic touch pens for data input.

[0025]

As described above, the grip cover for a barrel of the present invention has a structure as described above, so that it can be fitted to a fingertip during use and a comfortable feeling can be obtained irrespective of the strength of the writing pressure of the user. In addition, there is an effect that a pen can be made even when used for a long period of time and that the user does not get tired more than necessary.

[Brief description of the drawings]

FIG. 1 is a side view of a grip cover for a shaft cylinder according to an embodiment of the present invention.

FIG. 2 is a front view of the shaft tube grip cover of FIG. 1;

FIG. 3 is a rear view of the grip cover for the barrel of FIG. 1;

FIG. 4 is a plan view of the grip cover for the barrel of FIG. 1;

FIG. 5 is a bottom view of the grip cover for the barrel of FIG. 1;

FIG. 6 is a transverse sectional view taken along line AA of FIG. 2;

FIG. 7 is a transverse sectional view taken along the line BB of FIG. 2;

FIG. 8 is a transverse sectional view taken along line CC of FIG. 2;

FIG. 9 is a side view showing a use state of a side knock type writing instrument equipped with a grip cover for a barrel according to the present invention.

FIG. 10 is a side view of a grip cover for a barrel according to another embodiment of the present invention.

FIG. 11 is a front view of the shaft tube grip cover of FIG. 10;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grip cover 2 Flat part 3 Top part 4 Top part 5 Slope part 6 Slope part 7 Intermediate part 8 Groove 9 Cylindrical part 10 Narrow groove 20 Knock button 30 Tip part 40 Elliptical non-slip part

Claims (6)

[Claims] 1. A hollow grip cover attached to at least a grip portion of a shaft main body constituting a writing instrument or the like, wherein a substantially flat portion is formed on a surface of the grip cover in a width direction in which a finger abuts when gripping. A grip cover for a writing instrument, comprising: 2. The shaft cylinder according to claim 1, wherein the flat portion is formed of an inclined surface gradually descending from both a front end and a rear end toward a middle portion in a longitudinal direction, and the middle portion is formed wide. Grip cover. 3. A grip cover for a barrel according to claim 1, wherein a top portion is provided at least on a front portion and a rear portion in a longitudinal direction of the flat portion of the grip cover. 4. The grip according to claim 3, wherein a plurality of non-slip grooves are formed in a flat portion of the grip cover. 5. A grip cover for a barrel according to claim 4, further comprising a non-slip portion further symmetrically spaced apart from the flat portion of the grip cover in the width direction. 6. The grip cover for a shaft cylinder according to claim 5, wherein the non-slip portion is a narrow groove formed in a plurality in the width direction.