JP3431317B2 - Writing instrument grip - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grip for a writing instrument such as a ball-point pen, a felt-tip pen, and a mechanical pen. 2. Description of the Related Art Conventionally, as a grip for a writing instrument of this kind, as shown in FIG. 4, a soft cylinder 11 is attached to a grip portion of a shaft cylinder 10 and each finger ( A grip structure is known which has a moderate grip feeling (grip feeling) and a fingertip that does not become tired for a long time use by a soft cylindrical body 11 which is appropriately dented by the finger pressure of the thumb, the index finger and the middle finger (actual opening). (See No. 63-60375). However, the grip of the conventional writing instrument is configured such that the soft cylindrical body 11 is appropriately depressed by finger pressure in a range where the soft cylindrical body 11 hits the peripheral surface of the grip portion of the barrel 10. In other words, since the soft cylinder 11 maintains a moderate elastic force (repulsive force) so that the portion in contact with the finger is depressed by the finger pressure, the elastic force of the soft cylinder 11 in long-term use is If the value decreases, the effect is lost. Anyway,
The rubber-made soft cylinder 11 is designed to repel moderately the finger pressure due to its elasticity so that the grip feeling and the fingertip are not tired. Repeated contact tends to wear out and tend to elongate (stretching), resulting in a loss of repulsion to acupressure. Therefore, although the conventional grip structure initially exerts the gripping feeling and the effect of preventing the fingertip from getting tired, the effect gradually decreases as the elastic force of the soft cylindrical body 11 decreases with the elapse of time, and the final effect is obtained. Had a problem of lack of long-term stability, such that the elastic force of the soft cylindrical body 11 was completely lost and the effect was lost. Further, in the conventional grip structure, in order to make the soft cylindrical body 11 dented by finger pressure, a rib 13 for securing a concave space 12 between the soft cylindrical body 11 and the grip portion peripheral surface is provided.
Since the rib 13 is provided on the inner surface, the rib 13 serves as an obstacle that hinders the feeling of gripping by the soft cylindrical body 11 and the moderate dent deformation that prevents the fingertip from getting tired. Therefore, conventionally, the holding place is limited, and the usability is poor. The present invention has been made in view of such circumstances, and provides a writing instrument grip improved so that effects such as grip feeling (grip feeling) and fingertip fatigue can be exhibited and maintained for a long period of time. The purpose is to do. [0005] In order to achieve the above object, the present invention provides a technical means comprising: a soft inner cylinder having a diameter substantially equal to the outer diameter of a grip portion of a shaft cylinder; A grip body is constituted by the soft inner cylinder and the soft outer cylinder integrally connected at an end portion thereof, and a moderate elasticity of the soft outer cylinder is provided between the soft inner cylinder and the soft outer cylinder of the grip body. Ri Na encapsulating a fill material which imparts sex, encapsulating container is a gist that a gas. Incidentally, as the enclosure air, the gas material such as inert gases. According to the above-mentioned technical means of the present invention, the enclosure enclosed inside the grip body exerts an elastic force (repulsive force) against a finger pressure, and a grip feeling (grip) is obtained. (Feeling) and try not to get your fingertips tired. DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
(Also referred to as the center core), and shows the case of a ballpoint pen in which the tip 2a of the tip protrudes from the leading tool 3 at the tip of the barrel 1, and the enclosure 4 is sealed in the grip portion of the barrel 1. When a finger pressure is applied to the outer surface of the grip body 5 after the grip body 5 is fitted and attached, an elastic force (repulsion force) against the finger pressure is exerted by the enclosure 4 so that the grip feeling (grip feeling) and the fingertip are not tired. It becomes. The grip body 5 includes a soft inner cylinder 5-1 having a diameter substantially the same as the outer diameter of the ring-shaped concave portion 6 provided in the grip portion of the shaft cylinder 1, and a soft inner cylinder 5-1. It is constituted by a soft outer cylinder 5-2 integrally connected at an end portion, and the enclosure 4 is sealed between the soft outer cylinder 5-2 and the soft inner cylinder 5-1.
An appropriate elasticity is provided to the soft outer cylinder 5-2. The soft inner cylinder 5-1 and the soft outer cylinder 5-2 are made of a thermoplastic material having appropriate elasticity or a desired soft material such as rubber or elastomer, and have a longitudinal section formed by an appropriate molding method. It is integrally formed into a substantially half-moon-shaped bag (see FIG. 1), and the enclosure 4 is enclosed. The enclosure 4 is sealed in the grip body 5 to provide an appropriate elastic force against finger pressure to the soft outer cylinder 5-2 touched by a finger. Pneumatic fluid if Rannahli, grip body 5 at the charging amount of the soft outer cylinder 5-2 can exhibit an elastic force by recessed moderately by acupressure
Enclose within. The enclosure 4 is filled during the molding of the grip body 5 or by secondary processing after the molding. That is, the encapsulant 4 is sealed in the grip main body 5 at the same time as the primary processing for forming the grip main body 5 or by the secondary processing after the primary processing, and the soft outer cylinder 5-2 which the finger touches.
To give a moderate elastic force to finger pressure. According to the grip of the present embodiment, the elastic force (repulsive force) against the acupressure of the thumb, forefinger and middle finger is exerted by the enclosure 4 sealed in the grip body 5 as shown in FIG. With such a structure, it is possible to exhibit effects such as grip feeling (grip feeling) and fingertip tiredness over a long period of time. That is, even if the soft outer cylinder 5-2 constituting the grip body 5 is worn by contact with a finger in a long-term use, it does not come off like a conventional grip (the elastic force is reduced), and the grip feeling and the fingertip become tired. Such effects can be exhibited and maintained stably over a long period of time. In the above-described embodiment, a ball-point pen has been described. However, the present invention is not limited to a ball-point pen, and the present invention is directed to all writing instruments to which grips such as a mechanical pen and a felt-tip pen can be attached. The grip for a writing instrument of the present invention is constructed as described above, and has the following operational effects. Since the inclusion in the grip body consisting of the soft inner cylinder and the soft outer cylinder is configured to apply elastic force (repulsive force) to finger pressure to the soft outer cylinder touched by the finger, the grip body is soft. Even if the outer cylinder is worn due to contact with a finger during long-term use, the outer cylinder does not deform (the elastic force is reduced) as in the conventional grip. Therefore, according to the grip of the present invention, effects such as grip feeling (grip feeling) and fingertip fatigue can be stably exhibited over a long period of time by the inclusion in the grip body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial sectional view showing an embodiment of a writing instrument grip of the present invention. FIG. 2 is a sectional view taken along line II-II in FIG. 1 FIG. [FIG. 4] Cross-sectional view showing a conventional example [Description of reference numerals] 1 ... Shaft tube 4 ... Enclosure 5 ... Grip body 5-1 ... Soft inner tube 5-2 ... Soft outer tube

Claims (1)

(57) [Claims 1] A soft inner cylinder having a thickness substantially the same as the outer diameter of a grip portion of a shaft cylinder, and the soft inner cylinder is integrally connected at an end thereof. configure grip body with a soft outer cylinder, between the soft inner tube and a soft outer tube of the grip body, Ri Na encapsulating a fill material to impart moderate elasticity to the soft quality barrel, the A grip for a writing instrument , wherein the filling is a gas .