JP2005007584A - Writing utensil - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a writing utensil which shows an anti-slip effect even when a mouthpiece part is grasped while maintaining the anti-slip effect on a grip part in a grasping part as originally aimed at and further, does not hinder the attaching/detaching of the mouthpiece part. <P>SOLUTION: In the writing utensil 10 with a mouthpiece 50 fitted for retaining a writing tip 45 at the apex of a barrel 20, the grasping part of the barrel 20 is covered with the resilient grip part 30 of a different quality of material from the barrel 20. In addition, on the outer periphery of the mouthpiece 50, an annular resilient anti-slip member 53 is provided as a separate element from the grip part 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a writing instrument in which an anti-slip member is provided in a base portion separately from a grip portion provided in a grip portion of a shaft tube.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in writing instruments such as ballpoint pens and mechanical pencils, it has been widely practiced that a grip portion at the time of writing is covered with an elastic material such as rubber to form a grip portion for the purpose of preventing slipping.
Such a grip portion sufficiently exhibits an anti-slip effect when the writing instrument is correctly gripped. However, there are not a few people who have a scissors gripping near the tip of a writing instrument, especially children. For such a person, the grip portion provided in the normal grip portion is useless.
[0003]
In order to solve such a problem, a conventional technique related to a mechanical pencil shown in Patent Document 1 below has been proposed. In this prior art, the grip portion is attached to the base. Thereby, even when it has near the front-end | tip of a writing instrument, it is supposed that the anti-skid effect will be exhibited.
[0004]
[Patent Document 1]
JP 2000-289378 A
[Problems to be solved by the invention]
According to the prior art, the grip portion is attached to the base. From this prior art, the structure of the grip portion can be grasped in the following two ways.
(1) Although the grip portion is attached to the base, it is not attached to the original grip portion. That is, the grip portion is attached only to the base.
[0006]
(2) A grip portion is attached to the base, and this grip portion also covers the original grip portion. That is, the grip portion covers a part of the base in addition to the original grip portion.
Here, in the case of (1), since the grip portion is not attached to the original grip portion, the anti-slip effect is not exhibited when the writing instrument is gripped correctly.
[0007]
In the case of the above (2), since the grip portion also covers the original grip portion, the anti-slip effect is exhibited even when the writing instrument is correctly gripped. However, in the structure of (2), the grip portion covers both the shaft tube and the base. For this reason, in designing the writing instrument, when it is intended to adopt the structure when the base is detachable from the shaft tube, as described in the above-mentioned prior art example, when the base is removed from the shaft tube, The grip part must be designed to be removed from the barrel together. Such a design is difficult in the manufacturing process of the writing instrument, and the attachment and detachment of the base becomes complicated and difficult in practice. In addition, since the grip portion is not fixed to the shaft tube, the grip portion may be displaced from the shaft tube during use, and there is a concern about the anti-slip effect of the grip portion.
[0008]
Accordingly, the present invention provides a writing instrument that has an anti-slipping effect even when gripping the base part while maintaining the anti-slipping effect of the grip part at the original gripping part, and that does not interfere with the attachment / detachment of the base part. The purpose is to provide.
[0009]
[Means for Solving the Problems]
In view of the above problems, the present invention is a writing instrument 10 in which a base 50 for holding a writing tip 45 is attached to the tip of the shaft tube 20, and the gripping portion of the shaft tube 20 is the same as the shaft tube 20. It is covered with an elastic grip portion 30 made of a different material, and a non-slip member 53 having elasticity is provided on the outer periphery of the base 50 separately from the grip portion 30.
[0010]
Here, the “base 50” may be made of metal, resin, or other material.
Note that the base 50 holds the writing tip 45 not only when the writing tip 45 is fixed to the base 50 but also, for example, the writing tip 45 movable in the front-rear direction protrudes from the tip of the base 50 during writing. In such a structure, the case where the base 50 supports the writing tip 45 is also included. Moreover, the case where the nozzle | cap | die 50 supports the writing tip 45 so that the writing tip 45 does not wobble in the horizontal direction is also included.
[0011]
The “slip prevention member 53” may be formed as a separate part from the base 50 and fixed to the base 50 later, or may be formed simultaneously with the base 50 by two-color molding or insert molding. Or any of them.
Further, the anti-slip member 53 has “elasticity”, but this needs to be richer in elasticity than the material forming the base 50. In addition, the “grip portion 30” that covers the gripping portion of the shaft tube 20 needs to be more elastic than the material forming the shaft tube 20.
[0012]
The material for forming the anti-slip member 53 and the grip portion 30 is not particularly limited as long as it has elasticity as described above. However, specifically, it is desirable to use silicone rubber from the viewpoints of ease of molding, easy attachment to the base 50 and the shaft tube 20, and avoiding stickiness during use.
As described above, the grip portion 30 is provided at the original grip portion of the shaft tube 20, and the anti-slip member 53 is also provided at the base 50. Accordingly, even when the writing instrument 10 is correctly gripped and when the vicinity of the tip of the writing instrument 10 is gripped, the anti-slip effect can be obtained similarly. Further, since the anti-slip member 53 of the base 50 is separate from the grip portion 30 of the shaft cylinder 20, no trouble is caused even when the base 50 is detached.
[0013]
Here, in the present invention, in addition to the above-described configuration, a groove-shaped fixing groove 51 is provided on the outer periphery of the base 50, and the anti-slip member 53 is formed in an annular shape, and the fixing groove 51 is preferably fitted.
By forming as described above, the anti-slip member 53 is securely attached to the base 50, and the possibility of dropping off can be significantly reduced.
[0014]
In the present invention, in addition to the above configuration, it is desirable to form an inclined surface 52 at the rear end of the fixed groove 51 in which the depth of the fixed groove 51 decreases toward the rear. Here, since the base 50 of the writing instrument 10 is usually tapered, the anti-slip member 53 is structurally easy to drop forward. Therefore, by providing such an inclined surface 52, even when a force that shifts in the front-rear direction due to swelling of the anti-slip member 53 or the like acts, it is easier to move backward than forward and slip. The possibility of the stop member 53 dropping off forward is reduced.
[0015]
Further, in the present invention, in addition to the above-described configuration, the outer diameter of the base 50 gradually decreases toward the front, and the anti-slip member 53 is slid from the front of the base 50 to fix the fixing groove 51. It is made to fit in.
That is, since the base 50 is tapered, it is easy to attach the anti-slip member 53 from the front. Further, since the anti-slip member 53 is rich in elasticity, it is easy to be elastically deformed and moved to the fixing groove 51 at the time of mounting.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a writing instrument 10 according to the present embodiment. As shown in the figure, the writing instrument 10 according to the present embodiment is formed as a knock-type ballpoint pen.
[0017]
A grip portion 30, which is more elastic than the shaft tube 20, is provided at a grip portion in the first half of the shaft tube 20 made of hard resin. A metal base 50 is screwed to the tip of the shaft cylinder 20. An annular non-slip member 53 made of silicone rubber is mounted on the outer periphery near the rear edge of the base 50. A writing tip 45 formed as a ballpoint pen tip can enter and exit from the opening at the tip of the base 50. On the other hand, a knock button 60 is provided at the rear end of the barrel 20. By pushing the knock button 60, the writing tip 45 protrudes from the base 50 and is stored.
[0018]
FIG. 2 is a front sectional view of the tip portion of the writing instrument 10 according to the present embodiment.
A refill 40 for containing ink is accommodated in the shaft cylinder 20. A writing tip 45 is attached to the tip of the refill 40. On the other hand, the outer periphery of the grip portion in the first half of the shaft cylinder 20 is covered with a jacket 31 made of silicone rubber. A gel substance 32 is located between the outer casing 31 and the outer periphery of the shaft cylinder 20. A grip portion 30 is formed by the gel material 32 and the outer shell 31. That is, in this grip part 30, in addition to the elasticity of the silicone rubber forming the outer shell 31, the grip part can be deformed in accordance with the shape of the finger when gripped by the gel substance 32, The grip feeling is improved. The gel material 32 is also made of silicone. In addition to the gel substance 32, a gas such as air or nitrogen gas or other inert gas, or a liquid such as silicone oil or other oil or water can be enclosed in the envelope 31. .
[0019]
In addition, a base 50 with an anti-slip member 53 is screwed to the tip of the shaft cylinder 20.
FIG. 3 is a partial cross-sectional perspective view of the base 50.
As shown in FIGS. 2 and 3, a groove-like fixing groove 51 is provided at the rear edge portion of the base 50, and a non-slip member 53 is fitted into the fixing groove 51. An inclined surface 52 is formed at the rear end portion of the fixed groove 51 so that the depth of the fixed groove 51 decreases toward the rear (see FIG. 2).
[0020]
FIG. 4 is a perspective view showing how the anti-slip member 53 is attached to the base 50.
The base 50 has a tapered shape. When the anti-slip member 53 is pushed backward from the front end side of the base 50 while being elastically deformed, it is fitted and fixed at the position of the fixing groove 51 by a restoring force (see FIGS. 2 and 3). . Even when the anti-slip member 53 expands due to a high temperature or the like, the inclination surface 52 in the fixing groove 51 tends to move toward the rear end direction rather than the front end direction. Thereby, it is supposed that the possibility that the anti-slip member 53 will drop in the direction of the tip of the tapered base 50 will be reduced.
[0021]
FIG. 5 is a perspective view showing how the base 50 is screwed onto the shaft cylinder 20. The base 50 equipped with the anti-slip member 53 is screwed to the tip of the shaft cylinder 20 to form the writing instrument 10 (see FIG. 1).
[0022]
【The invention's effect】
Since this invention is comprised as mentioned above, there exists an effect described below.
That is, to provide a writing instrument that has an anti-slip effect even when gripping the base part while maintaining the anti-slip effect of the grip part at the original grip part and that does not interfere with the attachment / detachment of the base part. Is possible.
[Brief description of the drawings]
FIG. 1 is a perspective view of a writing instrument according to one embodiment of the present invention.
FIG. 2 is a front sectional view of a tip portion of a writing instrument according to one embodiment of the present invention.
FIG. 3 is a partial cross-sectional perspective view of a base of a writing instrument according to one embodiment of the present invention.
FIG. 4 is a perspective view showing a state where the anti-slip member is attached to the base in the writing instrument according to the one embodiment of the present invention.
FIG. 5 is a perspective view showing a state in which a base is screwed onto a shaft tube in the writing instrument according to one embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Writing tool 20 Shaft tube 30 Grip part 31 Cover body 32 Gel substance 40 Refill 45 Writing tip 50 Base 51 Fixing groove 52 Inclined surface 53 Anti-slip member 60 Knock button

Claims (5)

A writing instrument in which a base for holding the writing tip is attached to the tip of the shaft tube,
The grip portion of the shaft tube is covered with an elastic grip portion made of a material different from that of the shaft tube,
A writing instrument, wherein an anti-slip member having elasticity is provided separately from the grip portion on an outer periphery of the base. A groove-shaped fixing groove is provided on the outer periphery of the base,
The writing instrument according to claim 1, wherein the anti-slip member is formed in an annular shape and is fitted in the fixing groove. 3. The writing instrument according to claim 2, wherein an inclined surface is formed at the rear end of the fixed groove so that the depth of the fixed groove decreases toward the rear. The outer diameter of the base is gradually reduced toward the front, and the anti-slip member is slid from the front of the base to be fitted into the fixing groove. Writing instrument. 5. The writing instrument according to claim 1, wherein the anti-slip member is made of silicone rubber.

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