JP2014162138A - Multi-color writing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-color writing tool that eliminates time and effort required for an ink replacement and waste due to buying of a new mult-color writing tool, and makes it possible to use the multi-color writing tool for a long period of time.SOLUTION: A multi-color writing tool includes: a plurality of refills each having a writing part at the tip thereof and storing ink in the interior thereof; a barrel to store these refills; and an operation part that is secured to one end of the barrel and allows the writing part of each of the refills to be taken in and out from the other end of the barrel. The thickness of the refill 5a storing ink of high frequency of use is made larger than the other refills so as to increase the capacity of the ink.

Description

  The present invention relates to a multicolor writing instrument, and more particularly to a writing instrument in which the amount of ink contained in a refill and the shape of an ink container are changed.

A multi-color writing instrument is a convenient writing instrument that can use a plurality of colors of ink with a single writing instrument, is less bulky than being carried separately depending on the color of the ink, and does not have to be changed during use.
In recent years, this multi-color writing instrument that has been widely used, for example, as shown in Patent Document 1, is roughly composed of a shaft tube, a pusher, a latching portion, a refill, and a writing tip. These multicolor writing instruments are provided with refills filled with three or four colors of ink parallel to the inside of the cylindrical shaft, and one presser of a pressing portion connected to the rear end of each refill is provided in the axial direction. By sliding and holding the pusher's latching part in the shaft cylinder, the protruding state of the writing tip corresponding to the pusher is maintained, and it corresponds to the refill of the ink you want to use according to the user's preference Write with the leading end protruding. Then, when the other one pusher that is not latched is slid in the axial direction, the pusher that has been slid later comes into contact with the inner surface of the pusher that has already been latched. It is configured so that it is detached and the writing tip is immersed and accommodated in the shaft tube.
Also, for these multicolor writing instruments, replacement refills are also sold, and the user can purchase the refill of the color that has run out of ink in a timely manner, and only the refill can be replaced in a timely manner.

Japanese Patent No. 3168200

However, the multi-color writing instrument has a problem that the use frequency of each refill color differs depending on the user, and it is rare that the ink is used up evenly, and only some colors of ink are used up. In this case, it is sufficient to replace the corresponding refill, but the replacement refill is very small and the product identification symbol written on the refill etc. is very small and difficult to read. It is hard to understand whether it fits. In addition, because there is no need to purchase replacement refills, there are many cases where some of the ink cannot be used, and there is an inconvenience that the lost ink color cannot be used. It is not uncommon to dispose of them and purchase new multicolor writing instruments.
This is a problem from the viewpoint of effective utilization of resources because only the infrequently used ink remains and a new writing instrument is purchased without being used up.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a multi-color writing instrument that can be used for a long period of time by increasing the capacity of ink that is frequently used, eliminating the trouble of refill replacement and waste due to replacement.

The first multicolor writing instrument of the present invention has a writing portion at the tip, a plurality of refills containing ink therein, a shaft cylinder storing the refills, and attached to one end of the shaft cylinder, And an operation unit that allows the writing part of the refill to be taken in and out from the other end of the shaft tube, wherein at least two of the refills have different shapes and have different internal ink storage capacities.
The second multicolor writing instrument of the present invention is characterized in that in the first multicolor writing instrument, the shapes of at least two of the refills are different.
Furthermore, the third multicolor writing instrument of the present invention is the first or second multicolor writing instrument, wherein the thickness of the refill containing the ink that is frequently used is larger than the other refills. It is a feature.

According to the first multicolor writing instrument of the present invention, by changing the shape of the ink container for the refill and the amount of ink stored, the capacity of the frequently used ink is increased, and the labor and time required for replacement of the refill are wasted. Can be used for a long time.
In addition, according to the second multicolor writing instrument of the present invention, since the shape of the refill is not limited, the shape diversity is excellent, and the limited space in the shaft tube is effectively used, so that the inside of the refill It is possible to accommodate a large amount of ink.
Furthermore, according to the third multicolor writing instrument of the present invention, it is possible to increase the ink capacity that is frequently used by simply changing the diameter of the refill ink storage container, and it is possible to provide a multicolor writing instrument with excellent productivity. .

Overall view of multicolor writing instrument of one embodiment of the present invention Longitudinal section of the same multicolor writing instrument Exploded view of the same multicolor writing instrument Refill of the same multicolor writing instrument

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is an overall view of the multicolor writing instrument according to the present invention, FIG. 2 is a longitudinal sectional view of the multicolor writing instrument according to the present invention, FIG. 3 is an exploded view of the multicolor writing instrument according to the present invention, and FIG. It is a block diagram of such a refill. 1 to 4, 1 is a front shaft cylinder, 2 is a rear shaft cylinder, 3 is an operation section, 4 is a pressing section, 5 a to 5 c are refills, 6 is a writing section, 7 is a spring, and 8 is a guide section. is there.

  The embodiment of the present invention will be described with reference to FIGS. The front shaft cylinder 1 accommodates refills 5a to 5c having a thickness different from that of the writing unit 6 therein. The rear shaft cylinder 2 accommodates refills 5a to 5c, guide portions 8, and springs 7a to 7c having different thicknesses, and is joined to the front shaft cylinder 1 by a screw structure. The joined front shaft cylinder 1 and rear shaft cylinder 2 form the outer shape of a so-called writing instrument.

The operation unit 3 is formed at one end of the rear shaft cylinder 2 and has a plurality of window frames at the rear end. From the window frame of the operation part 3, the convex parts of the pressing parts 4a to 4c are exposed. The pressing parts 4a to 4c are slid by operating the convex parts of the pressing parts 4a to 4c downward. The pressing parts 4a to 4c correspond to the refills 5a to 5c. Since one ends of the pressing portions 4a to 4c are connected to the refills 5a to 5c, the pressing portions 4a to 4c also have protrusions that match the diameters of the refills 5a to 5c.
Each of the refills 5a to 5c has a writing portion 6 having the same thickness at the tip. Here, the refill 5a is a frequently used refill and has a structure in which the amount of ink stored is large, so that the amount of ink that can be stored is larger than the other refills 5b and 5c.
The springs 7 a to 7 c give a repulsive force when the used writing unit 6 is stored in the shaft cylinders 1 and 2. Since the springs 7a to 7c are used corresponding to the refills 5a to 5c, the springs 7a to 7c correspond to the outer diameters and shapes of the refills 5a to 5c, and the inner diameters are large and similar in shape. The guide portion 8 is used for positioning the refills 5a to 5c in the shaft cylinder, and a guide hole is formed corresponding to the size of the refills 5a to 5c.

Next, the refill of the present invention will be described with reference to FIG. Here, since the refill 5a has a larger diameter than 5b and 5c, it has a structure that can accommodate more ink. Although the shape of the refill 5a is different from 5b and 5c, the writing part 5a to 5c are all the same shape, so that the writing part 6 can appear and the shape of the tip of the front barrel 1 is suitable for writing. Anything is fine.
4 shows the cylindrical shape of the refills 5a to 5c. Needless to say, the shape of the refills 5a to 5c is not limited to the drawing, and the ink refill 5a that is frequently used can accommodate a large amount of ink. The shape can be selected, and the cross-section of the refill may be elliptical or semicircular, and is not limited as long as it can be accommodated in the shaft tube.

Further, the operation will be described. First, by sliding the pressing portions 4 a to 4 c, the corresponding refills 5 a to 5 c pass through the shaft hole of the guide portion 8, and the writing portion 6 is projected from the front end of the front shaft cylinder 1. When it is desired to use another color ink after using one ink, the convex portions of the pressing portions 4a to 4c of that color are similarly slid downward. The pushed pressing portions 4a to 4c come into contact with other pressing portions 4a to 4c that have already been pushed downward, and the other is pushed back up by the groove having the inner shape. At that time, the restoring force of the springs 7a to 7c acts, and the used refills 5a to 5c are pushed back to their original positions.
Although not shown here, the operation and configuration of each part are the same as those of a general multicolor writing instrument and are omitted because they are not the essence of the invention.

  The refills 5a to 5c of the present invention are used for a multicolor writing instrument, and the writing unit 6 is moved to the front end of the front barrel 1 by operating the pressing unit 4 interlocked with at least two different refills 5b and 5c. It has a configuration that allows more selective appearance, and the appearance mechanism of the writing unit 6 is not limited to the knock type.

  The multicolor writing instrument of the present invention increases the ink capacity of frequently used colors, thereby increasing the writing distance, enabling long-term use, and the difference in remaining amount from the amount of less frequently used ink. Since the ink is reduced and ink can be consumed in a balanced manner, it is widely applied to stationery.

DESCRIPTION OF SYMBOLS 1 Front side cylinder 2 Rear side cylinder 3 Operation part 4a-4c Press part 5a-5c Refill 6 Writing part 7a-7c Spring 8 Guide part

Claims (3)

  A plurality of refills having a writing part at the tip and containing ink therein, a shaft cylinder storing the refills, and attached to one end of the shaft cylinder, the writing part of the refill being connected to the other end of the shaft cylinder A writing instrument comprising an operation unit that is inserted and removed from an end, wherein at least two of the refills have different shapes and have different internal ink storage capacities.   2. The writing instrument according to claim 1, wherein at least two of the refills have different shapes.   The writing instrument according to claim 1 or 2, wherein a thickness of the refill for containing the ink that is frequently used is larger than that of the other refill.

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