JP2009034874A - Refill and writing utensil arranged therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems of the disconfirmation result of color of ink due to discoloration of a retaining tube by the rubbing with a ruler in the case of repeated writing with the retaining tube by thrusting against the ruler or the like and also the problem of the peeling off of the color through the rubbing (through the friction) due to the repeated sliding between the retaining part and the opening part of the barrel of a retractable type writing utensil. <P>SOLUTION: On the surface of a refill housed with ink as shown in fig, 9, an uneven part 25 is formed so as to let the color of ink display with the uneven part 25 under the condition that the means roughness of the uneven part is set to be ≥1.6 μm Ra and ≤50 μm Ra. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a refill in which the color of the ink is displayed on the surface of the refill containing the ink.

  As an example, there is a tip-colored ballpoint pen in which the appearance color of a ball holding cylinder holding a ball for writing characters at the tip of the ballpoint pen is the same color as the color of a character drawn by the ball held by the holding cylinder. .

Japanese Utility Model Publication No. 4-47577

The prior art has the effect that the color of the ink can be confirmed by the holding cylinder.
However, as described in the above specification, the coloring of the holding cylinder is generally simple painting or baking painting. Therefore, for example, when writing is repeated by pressing the holding cylinder against a ruler or the like, the colored color is peeled off from the holding cylinder due to friction with the ruler, and as a result, the color of the ink is confirmed. I couldn't.
In the retractable writing instrument, since the sliding between the holding portion and the opening of the shaft tube is repeated, the color is peeled off due to rubbing (friction).

  The gist of the present invention is that a fine uneven portion is formed on the surface of the refill containing the ink, and the color of the ink is displayed on the uneven portion.

  The present invention forms a fine uneven portion on the surface of the refill containing the ink and displays the color of the ink on the uneven portion. The display that has entered the recess is not peeled off. Therefore, it is possible to display the color of the stored ink even for long-term use, and thereby the color of the ink can be identified over a long period of time.

This will be described with reference to FIGS. This is a multi-core writing instrument in which ballpoint pens of three colors of black, red and blue are slidably arranged. You may combine not only a ball-point pen but a mechanical pencil suitably. Reference numeral 1 denotes a shaft main body, and the shaft main body 1 includes a front shaft 2 and a rear shaft 3. Further, in this example, the front shaft 2 is configured by a screwed structure of the tip member 4 and the middle shaft 5, but may be formed integrally.
The rear shaft 3 is formed with three slits 6 in the longitudinal direction. In this example, three slits 6 are formed, but the number of ball-point pens that are cursive letters is three, and the number of slits that are formed varies depending on the number of cursive letters. The slit 6 is formed up to one end of the rear shaft 3, and sliding grooves 7 are formed on both sides of the slit 6. However, the sliding groove 7 is not formed over the entire length of both sides of the slit 6 but is formed only up to the middle portion.
A substantially fan-shaped leg portion 8 whose cross-sectional shape expands in the outer diameter direction is formed in front of the rear shaft 3. The leg portion 8 is formed by forming the slit 6. Therefore, the number of legs 8 varies depending on the number of cursive letters.
In addition, although the code | symbol 9 is a clip part integrally formed in the said rear axis | shaft 3, you may comprise by another member and may mutually fix. Reference numeral 10 denotes a grip member made of a rubber-like elastic body attached to the gripping portion of the tip member 4. However, the surface of the tip member 4 may be knurled to form a grip portion. .

  A slider 11 is slidably disposed in the slit 6 of the rear shaft 3. Sliding projections 12 are formed on both sides of the slider 11 in the longitudinal direction, and are slidably engaged with the sliding grooves 7 formed in the slit 6. Two release protrusions 13 and 14 are formed on the back surface of the slider 11 with a gap therebetween, and a spherical connection portion 15 for connecting the cursive body is formed on the front end portion of the slider 11. The connection unit 15 is connected with a ballpoint pen (writing body) 16, but may be a mechanical pencil or the like. Reference numeral 17 is a repellent member such as a coil spring that biases the writing body 16 and the slider 11 connected to the writing body 16 backward.

A restricting portion 18 is formed in an intermediate portion of the middle shaft 5 that is one member of the front shaft 2, and three through holes 19 into which the writing body 16 is loosely inserted are formed in the restricting portion 18. The cursive body 16 is urged rearward by locking one end of the elastic member 17 to the restricting portion 18. In addition, three grooves 20 are formed in the longitudinal direction inside the middle shaft 5 and behind the restricting portion 18, and the legs 8 of the rear shaft 3 are slidably contacted with the grooves 20. 8 is guided. Further, the groove portion 20 has substantially the same shape as the cross-sectional shape of the leg portion 8. That is, a fan shape that expands in the outer diameter direction is formed.
A tip member 4 as one member of the front shaft 2 is detachably fixed to the middle shaft 5 by screwing. The tip member 4 and the center shaft 5 may be integrally formed. However, considering the ease of replacement of the writing body 16 and molding, it is better to use two members and fix them detachably.
In addition, the inner diameter portion of the tip member 4 gradually decreases in diameter toward the pen tip side and has a conical inner shape portion. A plurality of ribs 21 that urge toward the central axis of the shaft body 1 are formed at equally spaced positions.

A ball holder 22 is fixed to the tip of the ballpoint pen 16, and a ball 23 is rotatably arranged at the tip of the ball holder 22. The ball holder 22 is gradually reduced in diameter toward the tip. That is, it has a conical shape (cone portion 24). A fine uneven portion 25 is formed on the surface of the conical portion 24. In this example, the uneven portion 25 is formed by a fine spiral, but the fine uneven portion may be formed by blasting or the like. In addition, the surface of the spiral concavo-convex portion 25 is colored by painting with a paint 26 having the same color as the ink contained in the ballpoint pen 16. More specifically, the paint 26 is colored not only on the surface of the convex portion 25a of the concave and convex portion 25 but also on the surface of the concave portion 25b. That is, the paint 26 has also entered the recess 25b. In this example, the concave / convex portion 25 of the conical portion 24 is colored with the same color paint as the ink, but the characters indicating the ink color such as “red”, “R”, “black” and “B” are displayed. You may draw.
The average roughness of the fine irregularities is about 6.3 μmRa to 25 μmRa, but may be in the range of 1.6 μmRa to 50 μmRa. When the average roughness of the concavo-convex portion is less than 1.6 μmRa, the depth of the concave portion is almost lost, and there is a risk of peeling as in the conventional technique. On the other hand, if the average roughness exceeds 50 μmRa, it becomes like a wrinkle and a cutting effect is generated, and there is a risk of scraping a contact portion such as a ruler.

The operation will be described. Even if the display on the surface of the convex portion 25a of the concave and convex portion 25 is peeled off, the display of the concave portion 25b remains.
Next, the operation will be described. When a specific slider 11 is pressed forward (downward in the figure) from the state shown in FIG. 1 (FIG. 12), the slider 11 moves forward with the writing body 16 while being guided by the slit 6 and the sliding groove 7. The tip of the body 16 protrudes from the tip of the shaft body 1. At the same time, the slider 11 is pushed into the inner side of the barrel body 1, and then the rear end of the sliding protrusion 12 formed on the side surface of the slider 11 is engaged with the front end of the sliding groove 7, The backward action of the cursive body 16 is prevented. That is, by forming the sliding groove 7 only up to the middle part of the slit 6, the slider 11 is also engaged.
In the projecting process of the writing body 16, the writing body 16 is urged toward the central axis of the shaft body 1 by the rib 21, and the writing body 16 moves toward the center of the shaft body 1 by the urging. . As a result, at the same time that the protruding cursive body comes into contact with the other cursive body, the other cursive body 16 falls between the two adjacent longitudinal ribs 21 and a part of the cursive body 16 falls into the ribs. It will be fixed between. Therefore, when the writing body in the protruding state due to the writing pressure tries to move, the other writing body in the immersive state is fixed between the adjacent ribs in the tip member 4, so that the collision action between the writing bodies is It does not occur and good writing is obtained.
Next, when the writing body 16 is to be stored in the shaft body 1, the other slider 11 is pressed. When the other slider 11 is pressed, the release protrusions 13 and 14 formed on the back surfaces of the sliders 11 collide with each other. By this collision action, the slider 11 in the pressed state is pressed in the outer direction of the shaft cylinder main body 1. Then, by this pressing action, the engagement between the sliding projection 12 and the sliding groove 7 of the slider 11 is released, and the writing body 16 which is in the protruding state by the releasing action is retracted by the action of the elastic member 17. The shaft body 1 is immersed.

A second example will be described with reference to FIG. On the outer peripheral surface of the conical portion 24 of the ball holder 22, a groove portion 27 is formed in a band shape. The width of the groove 27 is such that the ruler does not enter, specifically, about 0.5 mm to 1.0 mm. The groove 27 is colored with a paint 26 having the same color as the ink contained in the ballpoint pen 16. Note that fine irregularities having an average roughness of 1.6 μmRa to 50 μmRa may also be formed on the surface of the groove 27. Even if a thin ruler is used, the state of adhesion of the paint 26 can be maintained over a long period of time.
A third example will be described with reference to FIG. A cylindrical small-diameter portion 29 is formed in front of the ball holder 28, and the ball 23 is rotatably disposed at the tip of the small-diameter portion 29. The surface of the small-diameter portion 29 is formed with fine uneven portions 25 similar to those in the first example, and the surface of the uneven portions 25 is coated with a paint 26 having the same color as the ink contained in the ballpoint pen 16. It is colored by.
Further, in this example, the uneven portion 25 is formed in a range of 1.5 mm to 4.0 mm from the tip of the ball 23. A thickness portion such as a ruler is formed at a position where it does not contact the concavo-convex portion 25.

BRIEF DESCRIPTION OF THE DRAWINGS The longitudinal cross-sectional view which shows one example of this invention (cursive body immersion state). The side view of FIG. 1 (writing vs. protrusion state). AA sectional view taken on the line AA of FIG. FIG. 3 is a sectional view taken along line BB in FIG. 1. The CC sectional view taken on the line of FIG. The longitudinal cross-sectional view of the tip member of FIG. The DD sectional view taken on the line of FIG. FIG. 2 is an enlarged view of the vicinity of the tip of FIG. 1. The E section enlarged view of FIG. The principal part enlarged view which shows a 2nd example. The principal part enlarged view which shows a 3rd example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 axis | shaft main body 2 front axis | shaft 3 back axis | shaft 4 tip member 5 center axis | shaft 6 slit 7 sliding groove 8 leg part 9 clip part 10 grip member 11 slider 12 sliding protrusion 13 release protrusion 14 release protrusion 15 connection part 16 cursive body 17 repelling Member 18 Restriction part 19 Through hole 20 Groove part 21 Rib 22 Ball holder 23 Ball 24 Conical part 25 Concavity and convexity part 26 Paint 27 Groove part 28 Ball holder 29 Small diameter part

Claims (6)

A refill characterized in that an uneven portion is formed on the surface of a refill containing ink, and the color of the ink is displayed on the uneven portion. The refill according to claim 1, wherein an average roughness of the concavo-convex portion is 1.6 μmRa to 50 μmRa. The refill according to claim 1 or 2, wherein the fine irregularities are coated with the same color as the color of the ink. The refill according to claim 1, wherein a small-diameter portion is formed in the refill, and the fine uneven portion is formed in the small-diameter portion. A writing instrument, wherein the refill according to claim 1 is arranged so as to appear and retract. The writing instrument according to claim 5, wherein inks having different colors are accommodated in a plurality of refills.

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