JP2607458Y2 - Shaft barrel in writing implement - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft barrel for a writing instrument which can maintain the grip of a grip portion for a long time.

[0002]

2. Description of the Related Art Conventionally, an annular body having a non-slip property is fixed to a grip portion of a writing instrument to prevent slippage during writing due to sweat or the like.

[0003]

However, the gripping position of the writing implement is fixed according to personal preference. That is,
A person who prefers the front end always grips the front end, a person who prefers the intermediate part always grips the intermediate part, and a person who likes the rear part always grips and writes the rear part in many cases. As described above, the gripping positions are often different between individuals, but the gripping positions are often constant among individuals. For this reason, in the conventional ring attached to the grip portion, the same portion is always gripped and written. As a result, the slip prevention function of the ring is reduced due to sweat or the like, and the original function is reduced. There is a problem that it does not fulfill.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a non-slip non-slip surface having the same outer surface treatment between a step formed in a barrel and a tip member connected to the barrel, which is a gripping portion. both the removably disposed a plurality of rings having sex, the
The first aspect is a barrel in a writing instrument having a front surface and a rear surface of an annular body that are flat, and a non-circular outer surface is provided between a step formed in the barrel and a tip member connected to the barrel, which is a gripping portion, A second object of the present invention is a shaft barrel in a writing instrument in which a plurality of rings having the same non-slip properties for external surface treatment are arranged such that adjacent rings are detachably arranged in the same direction.

FIG. 1 shows an embodiment in which the present invention is applied to a mechanical pencil. A core feeding mechanism (not shown) is provided in the barrel 1 except for the configuration of a grip portion 2 which is a front portion of the barrel 1, and a rear side. There is a known configuration in which a core accommodating tube (not shown) in which a knock member 4 is continuously provided is disposed, and a tip member 5 is continuously provided in front of the barrel 1. The present invention is applicable to various writing tools other than the mechanical pencil, such as a ballpoint pen, a fountain pen, and a marking pen.

[0006] A plurality of (three in the figure) rings 3 are fixed between the stepped portion 1a formed on the barrel 1 and the tip member 5 on the grip portion 2. It is arranged continuously so as to surround it. Examples of the material of the ring 3 include a thermoplastic elastomer, silicone rubber, vinyl chloride, urethane, styrofoam, brass, phosphor bronze, wood, and the like. Silicone resin, a material made of non-slip material itself such as wood, and a material that does not itself have non-slip properties, but its surface is chemically treated,
Those that form patterns such as knurls or lattices by mechanical processing, physical processing, etc., or that formed many small projections,
Both surfaces coated with cloth, surfaces treated with a non-slip property such as a thermoplastic elastomer, silicone resin, etc., and those provided with a non-slip property by painting or the like are meant. However, the outer surface treatment of the plurality of rings 3 is the same. The reason is that when the anti-slip function is deteriorated, the ring body 3 is replaced with another ring body 3. However, when the rear surface processing of the ring body 3 is different when the rearrangement is changed, the grip feeling is different from the familiar grip feeling. It is. The ring 3 may be colorless, colored, or in a different color.

In FIG. 1, the ring body 3 is fixed between the step portion 1a and the tip member 5, and each ring body 3 is in a contact state, as shown in FIG. Each ring 3 may be provided with a connecting means 3a. When the connecting means 3a is provided on each ring 3, the small diameter portion 1 of the barrel 1 after connecting each ring 3
b. The connecting means may not be provided on each ring 3, or a gap may be provided between the rings 3.

Further, the ring 3 will be described. First, as for the outer surface shape, as shown in FIGS. 1 and 2, in addition to the outer surface having a circular shape, a non-circular shape such as an ellipse, a star, a triangle, a quadrangle, a hexagon, and an octagon can be adopted. In the case of a non-circular shape, as shown in FIG. 4, it is necessary to form the corners on the same line, that is, to make the adjacent rings 3 have the same direction.

Although three rings 3 are used in FIG. 1 as the number of rings 3, a plurality of rings may be used.

The present invention can be variously modified without departing from the gist thereof. For example, as shown in FIG. 5, a notch 3b is provided in the ring body 3 so as to be able to expand outward.

[0011]

According to the present invention, when the anti-slip function of one ring 3 is reduced, it can be replaced with another ring 3 in which the anti-slip function is not reduced.

[0012]

According to the present invention, a plurality of gripping portions, each having a circular outer surface and having the same non-slip property as that of the outer surface treatment, are provided between a step formed on a barrel and a tip member connected to the barrel. both placing annulus detachably, flat front and rear surfaces of the ring member
A surface, or a gripping portion, between the step formed in the barrel and the tip member connected to the barrel, the outer surface is non-circular, and a plurality of rings having the same non-slip properties of the outer surface treatment. Since the adjacent rings are detachably arranged in the same direction, if the slip prevention function of one ring 3 is reduced, it may be replaced with another ring 3 whose slip prevention function is not reduced. Further, it is possible to provide a shaft cylinder in a writing instrument that can maintain the anti-slip property of the grip portion for a long time. Furthermore, since a plurality of rings are detachably arranged between the step formed on the barrel and the tip member connected to the barrel, which serves as a gripping part, there is an advantage that the attachment is simple. Have.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment.

FIG. 2 is a perspective view of an embodiment of a ring body.

FIG. 3 is a perspective view of another embodiment of the ring.

FIG. 4 is a perspective view of another embodiment of the ring.

FIG. 5 is a perspective view of another embodiment of the ring.

[Explanation of symbols]

 Reference Signs List 1 shaft cylinder 1a stepped portion 1b small diameter portion 2 gripping portion 3 ring 3a connecting means 3b cut 4 knock member 5 tip member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B43K 23/008 B43K 3/00

Claims (2)

(57) [Scope of request for utility model registration] 1. A plurality of rings having a circular outer surface and the same non-slip properties as those of the outer surface treatment are provided between a step portion formed on a barrel and a tip member connected to the barrel, which is a gripping portion. When removably disposed together barrel in brush <br/> Kigu in which the front and rear faces of the ring member in the plane. 2. A plurality of rings having a non-circular outer surface and having the same non-slip properties as those of the outer surface treatment, between a step portion formed on the barrel and a tip member connected to the barrel, which serves as a grip portion. Is a shaft cylinder in a writing instrument in which adjacent rings are detachably arranged in the same direction.