JPH0811477A - Grip part structure in writing utensil and painting tool - Google Patents

Abstract

PURPOSE:To obtain an anti-slip grip part and to select and fix the position of the grip part by a simple structure. CONSTITUTION:A structure comprises a grip part 7 having anti-slip properties and provided with a threaded part 8 inside, a barrel made of a tip barrel 2 and a barrel body 3 having an outer surface with a threaded part helically engaged with the threaded part of the grip part, and a coil spring 9 provided between the tip barrel and the grip part or between the grip part and the barrel body. With the movement of the grip part in the longitudinal direction thereof, a frictional resistance between the threaded part of the grip part and the threaded part of the barrel body is increased by the resilient force of the coil spring. Alternatively, a spring expanded in the peripheral direction thereof is provided between the barrel body 3 and the tip barrel 2, and a frictional resistance can be imparted to the grip part by the resilient force of the spring caused by the peripheral expansion thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gripping part structure in a writing instrument and an applicator which allows the position of the gripping part to be selected according to the preference of the user.

[0002]

2. Description of the Related Art Conventionally, the gripping portion of a writing instrument has been devised in shape so as to prevent fatigue caused by long-time writing even a little.
The position of the grip portion can be changed, the diameter is increased, the position of the center of gravity is ergonomically determined according to the weight of the writing instrument, and a slip stopper is arranged. As a specific example of the prior art in which the position of the grip portion can be changed, there is Japanese Utility Model Laid-Open No. 62-30687. According to the invention, "a plurality of engagement grooves provided in a shaft cylinder and at least one engagement piece having an engagement protrusion capable of engaging with the engagement groove, and the engagement ring, It is a writing instrument grip device including a fastening ring that can be fastened to the fastening ring while suppressing the outward deformation of the joint piece.

[0003]

In the above-mentioned prior art, there is no problem in preventing the grip portion from slipping. However, the preference of the gripping position of the writing tool at the time of writing varies widely depending on the user. Some people prefer to grip and write at a portion close to the writing tip, and some prefer to grip at a portion far from the writing tip to write. However, in Japanese Utility Model Laid-Open No. 62-30687, the user operates a locking ring and a fastening ring, which are gripping parts, to move them in the longitudinal direction of the shaft cylinder so that the user can move the gripping position (from the writing tip to the gripping part). However, the operation is troublesome. That is, although the conventional gripping part structure of the writing instrument has been improved in terms of preventing the gripping part from slipping, a structure capable of selecting the position of the gripping part by a simple operation is not known. Therefore, the present invention not only prevents the grip portion from slipping, but also selects the position of the grip portion with a simple structure, and
An object of the present invention is to provide a grip portion structure for a writing instrument and an applicator that can be fixed and can be adapted to a user's preference.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a grip portion having a non-slip property and having a screw portion on its inner surface, a front barrel and a barrel body is provided on the outer surface of the barrel body. The shaft cylinder formed with a screw part that is screwed into the screw part of the, and a coil spring interposed between the front shaft cylinder and the grip part or between the grip part and the shaft cylinder body, and the grip part is moved in the longitudinal direction. At this time, the gripping structure of the writing instrument and the applicator in which the frictional resistance between the screwing portion of the gripping portion and the screwing portion of the barrel body is increased by the elastic force of the coil spring is the first gist, and the gripping property is provided. A barrel having a threaded portion on its inner surface, a barrel formed of a front barrel and a barrel body, and a screw portion formed on the outer surface of the barrel body to be engaged with the screw portion of the barrel, and a barrel. It consists of a spring that is inserted with a bulge in the outer peripheral direction between the main body and the front barrel.
The second gist is the grip structure in a writing instrument or applicator in which frictional resistance is imparted to the grip by elastic repulsion due to bulging in the outer peripheral direction of the spring, and it has slip resistance and a screw part on its inner surface. A gripping portion, a shaft cylinder which is composed of a front shaft cylinder and a shaft cylinder body, and has a screw part which is screwed with the screw part of the gripping part is formed on the outer surface of the shaft cylinder body, and an annular recess on the outer surface of the front shaft cylinder. It consists of a spring and a bulge in the outer peripheral direction,
The gripping structure of a writing tool and an applicator, in which frictional resistance is imparted to the gripping part by elastic repulsion due to bulging in the outer peripheral direction of the spring, is the third gist, and it has slip resistance and has a screw part on its inner surface. A gripping part, a shaft cylinder formed of a front shaft cylinder and a shaft cylinder body, and a screw part formed on the outer surface of the shaft cylinder body to be screwed with the screw part of the gripping part, and a shaft in an annular recess on the inner surface of the gripping part. A grasping part structure in a writing instrument and an applicator, which comprises a spring interposed with a bulge in the axial direction, and imparts frictional resistance to the shaft cylinder by elastic force due to the bulge in the axial direction of the spring It is what

The following is a description of examples applied to ballpoint pens, but the present invention can also be applied to various writing instruments such as mechanical pencils, fountain pens, and marking pens, and applicators such as makeup tools. In FIG. 1, reference numeral 1 includes a front barrel (generally referred to as a front member) 2, a front barrel 2 and a barrel main body 3 fixed by appropriate means, and a barrel made of metal or synthetic resin. In addition, the shaft cylinder 1 accommodates a center shaft 5 (having ink stored therein) having a writing portion (ball) 4 at its tip. A screw portion 6 is formed on the surface of the barrel body 3 of the barrel 1. Reference number 7
Is a grip portion having a non-slip property, and has a screw portion 8 that engages with a screw portion 6 formed on the surface of the barrel body 3 on the inner surface thereof, and the grip portion 7 is engaged by these screw portions. It can move in the longitudinal direction. The screw portion 8 of the grip portion 7 forms a plurality of protrusions in the circumferential direction of the inner surface of the grip portion 7,
The screw portion 8 may be formed on the protrusion.

Examples of the material of the grip portion 7 include thermoplastic elastomer, silicon rubber, vinyl chloride, urethane, styrofoam, brass, phosphor bronze, wood, etc., and the meaning of "having non-slip properties" is, for example, Although it is made of a material having a non-slip property such as a thermoplastic elastomer, a silicone resin, or wood, it is a material that does not have a non-slip property, but its surface is subjected to chemical treatment, mechanical treatment, Patterns such as knurls and lattices are formed by physical treatment, many small protrusions are formed, the surface is covered with cloth, and the surface itself is non-slip like thermoplastic elastomer and silicone resin. Treated with the above, those whose outer shape is gradually enlarged from the middle part toward the front part, and the non-slip properties are given by painting etc. It is intended to mean both. still,
The grip portion 7 may be colorless or colored.

Further, it is useful that the grip portion 7 is composed of a two-layer molded article made of a soft material and a harder material, which is a different material, so that a delicate grip feeling can be exhibited. . In the case of such a grip portion 7, a soft material may be arranged on the outside, and a hard material may be arranged on the inside. As a specific example, as the soft material, Styrene-butadiene elastomer, olefin elastomer, styrene elastomer, polyamide elastomer, polyester elastomer,
Polyurethane elastomer, urethane, EVA (ethylene vinyl acetate copolymer), silicone resin, etc., and hard materials include AS resin, ABS resin, PO
M resin, PS (polystyrene) resin, PET (polyethylene terephthalate) resin, PBT (polybutylene terephthalate) resin, PP resin, PMMA (polymethacryl) resin, polymethylpentene, PC (polycarbonate) resin, PA (polyamide) resin, PVC (vinyl chloride) resin or the like, and a preferable combination thereof is a styrene elastomer and POM in consideration of moldability and the like.
Resin, styrene elastomer and ABS resin.
In addition, the two-layered different-material molded product is a product molded by insert molding, injection molding, extrusion molding, blow molding, or the like,
It means that the inner layer and the outer layer are molded and united separately, and the most preferable one is a molding method generally called different material (two-color) molding.

In FIG. 1, reference numeral 9 is a coil spring which is interposed between the front barrel 2 and the grip portion 7 and serves as a fixing means for the grip portion 7.

Next, a method of moving and fixing the grip portion 7 in the longitudinal direction in the embodiment shown in FIG. 1 will be described. When the grip portion 7 (or the shaft cylinder body 3 or the front shaft cylinder 2) is gripped and the shaft cylinder body 3 or the front shaft cylinder 2 (or the grip portion 7) is rotated in the state of FIG. 1, the shaft cylinder body 3 or When the front barrel 2 (or the grip portion 7) moves forward and stops rotating at an arbitrary position, the state shown in FIG. 2 is obtained and the distance between the grip portion 7 and the writing portion 4 changes (see FIG. 2). At this time, the coil spring 9
Will be compressed, but the screw portion 8 provided in the grip portion 7 will receive the elastic force due to the compressive force of the coil spring 9. As a result, the screw portion 8 of the grip portion 7 comes into pressure contact with the screw portion 6 formed on the surface of the barrel body 3 in the longitudinal direction (see FIG. 2). That is, the frictional resistance between the screw portion 8 of the grip portion 7 and the screw portion 6 of the barrel body 3 becomes large, and the writing portion 4 does not move backward even when a writing pressure is applied. In this example, the coil spring 9 may be interposed between the grip portion 7 and the barrel body 3 as shown in FIG. In the example of FIG. 4, the grip 7 is moved to the rear of the barrel 1 to compress the coil spring 9 (see FIG. 5).

6 to 8 show another embodiment of the present invention. The difference from the embodiment of FIG. 1 lies in the fixing means.
That is, the examples of FIGS. 6 to 8 are the same as the embodiment of FIG. 1 in that the spring is used as the fixing means of the grip portion 7, but the arrangement position and function of the spring are different from those of the embodiment of FIG. ing. In this example, a leaf spring other than the coil spring can be used as the spring. Each example will be specifically described below. In the example of FIG. 6, the spring 10 is interposed between the barrel main body 3 and the front barrel 2 with a bulge in the outer peripheral direction. Therefore, the inner surface of the grip portion 7 is bulged by the bulge of the spring 10. Therefore, the frictional resistance is always applied, and even when the grip portion 7 is moved to a desired position for writing, the writing pressure of the writing portion is not absorbed and the finger portion does not retreat.

In the example of FIG. 7, an annular recess 2a is formed on the outer surface of the front barrel 2, and a spring 10 is inserted in the annular recess 2a with a bulge in the outer peripheral direction. The inner surface of (not shown) is always given a frictional resistance due to the bulge of the spring 10, and even when the gripping portion is moved to a desired position and writing is performed, the writing pressure of the writing portion can be absorbed and the retraction can be performed. Absent.

In the example of FIG. 8, an annular recess 7a is formed on the inner surface of the grip portion 7, and a spring 10 is inserted in the annular recess 7a with a bulge in the axial direction. The bulge of the spring 10 comes into contact with the main body of the barrel or the front barrel to give frictional resistance.

Various modifications are possible in the present invention, and some of them will be exemplified below. One of them is to provide a fixing assisting means for the grip portion. Specifically, it is integrally or separately projected on the outer surface of the barrel body and / or the tip barrel that contacts the inner surface of the grip portion. A portion (one or more longitudinal protrusions or annular protrusions), or an integral or separate protrusion (one or more) on the inner surface of the grip body that contacts the outer surface of the barrel body and / or the tip barrel. A plurality of longitudinal protrusions or annular protrusions) may be provided, or protrusions (one or more than one) may be formed integrally or separately on both the outer surface of the barrel body and / or the front barrel and the inner surface of the grip portion. For example, a longitudinal protrusion or an annular protrusion) is provided.

Others include the shape of the grip portion. For example, the outer diameter becomes smaller toward the front, a grid-like groove is formed on the surface, or the outer shape is drum-shaped. For example, many small projections are formed on the surface. In addition, putting an antibacterial material in the material of the gripping part
This is useful in that it prevents the generation of mold on the surface of the grip portion due to the adsorption of sweat. As such an antibacterial material,
Generally, commercially available products (for example, Ameni Top Co., Ltd. of Matsushita Electric Industrial Co., Ltd., Biocomposite Powder Co., Ltd. of Koa Glass Co., Ltd.) may be used.

[0015]

According to the present invention, since the grip portion is not made of a non-slip member, and the grip portion and the shaft tube are screwed together to make the grip portion movable, the grip portion is fixed by the spring. The grip portion is easy to use without slipping, and the position of the grip portion can be selected according to the preference of the user.

[Brief description of drawings]

FIG. 1 is a partial vertical cross-sectional view showing a first embodiment.

FIG. 2 is an operation explanatory diagram of the first embodiment.

FIG. 3 is an operation explanatory diagram of the first embodiment.

FIG. 4 is a partial vertical cross-sectional view showing a modified example of the first embodiment.

5 is an operation explanatory diagram of the example of FIG. 4;

FIG. 6 is a partial vertical cross-sectional view showing another embodiment.

FIG. 7 is a longitudinal sectional view of a main part showing still another embodiment.

FIG. 8 is a longitudinal cross-sectional view of a main part showing still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 Front shaft cylinder 2a Annular recess 3 Shaft cylinder main body 4 Writing part 5 Middle shaft 6 Screw part 7 Gripping part 7a Annular recess 8 Screw part 9 Coil spring 10 Spring

Claims (4)

[Claims] 1. A screw which has a non-slip property and which has a screw portion on the inner surface thereof, a front barrel and a barrel body, and which is screwed to the screw portion of the handle on the outer surface of the barrel body. It is composed of a shaft cylinder that forms a part and a coil spring that is interposed between the front shaft cylinder and the gripping part or between the gripping part and the shaft cylinder body.When the gripping part is moved in the longitudinal direction, the coil spring is repulsive force. A grip part structure in a writing instrument and an applicator in which the frictional resistance between the screw part of the grip part and the screw part of the barrel body increases. 2. A screw having anti-slip properties and comprising a grip portion having a screw portion on its inner surface, a front barrel and a barrel body, and screwing the screw portion of the grip portion on the outer surface of the barrel body. It consists of a shaft cylinder that forms a section, and a spring that is inserted with a bulge in the outer peripheral direction between the main body of the shaft cylinder and the front shaft cylinder. A gripping part structure in a writing instrument or an applicator that is applied. 3. A screw having anti-slip properties and having a grip portion having a screw portion on its inner surface, a front barrel and a barrel body, and screwing the screw portion of the grip portion on the outer surface of the barrel body. It consists of a shaft cylinder that forms a part and a spring that is inserted in an annular recess on the outer surface of the front shaft cylinder with a bulge in the outer peripheral direction.The elastic repulsion due to the bulge in the outer peripheral direction of the spring provides frictional resistance to the grip. A gripping part structure in a writing instrument or an applicator that is applied. 4. A screw having anti-slip properties and comprising a grip portion having a screw portion on its inner surface, a front barrel and a barrel body, and screwing the screw portion of the grip portion on the outer surface of the barrel body. It consists of a shaft cylinder that forms a section and a spring that is inserted in an annular recess on the inner surface of the grip with a bulge in the axial direction.The elastic bulging of the spring in the axial direction provides frictional resistance to the shaft cylinder. A gripping part structure in a writing instrument or an applicator that is applied.