JP3932706B2 - Multi-core writing instrument - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multi-core writing instrument containing a plurality of writing bodies including at least one ballpoint pen.
[0002]
[Prior art]
The applicant of the present application previously made the idea described in Japanese Utility Model Publication No. 62-13833 as a multi-core writing instrument, and by using this idea, a multi-core writing instrument containing a plurality of writing bodies including two ballpoint pens. Was commercialized.
More specifically, a partition wall is formed on the inner side of the outer shaft, and an inner shaft is disposed at the inner center of the outer shaft so as to be rotatable and movable back and forth. A storage chamber (core chamber) in which a cursive body (core: name used in the method) is stored is formed by the central shaft and the partition. A receiving member with which the tip of the cursive body abuts is fixed below the storage chamber. In the storage room, two red and black ballpoint pens and six colored pencil leads are stored.
The middle shaft is provided with a plate-like elastic member (lid) in the longitudinal direction, and the elastic member can be deformed in the inner direction. When the elastic member is deformed in the inner direction, each of the writing bodies projects from the tip of the outer shaft.
[0003]
[Problems to be solved by the invention]
The above product has an excellent effect that it is possible to easily select a plurality of cursive letters despite having a simple structure, and that the selected cursive letters can be easily moved up and down by a simple operation. ing.
However, the receiving member positioned in front of the ballpoint pen serves as a movement prevention member for moving the ballpoint pen forward during storage. For this reason, when stored (especially when the side where the cursive object appears is facing downward), the ink ejection part, which is the tip of the ballpoint pen, is in contact with the receiving member, and ink adheres to the contact part. It has been done. And, when the adhered ink is solidified, the receiving member and the ink discharge part are fixed, and when used (in the projecting operation), the projecting operation of the ballpoint pen may be hindered. If it was strong, there was a risk that it could not be projected.
[0004]
In addition, for example, when a red cursive body is stored in a place where black ink is adhered, and the tip of the cursive touches the adhered black ink, the adhered black ink adheres to the writing surface when writing. As a result, the red line was black, and the color of the other colored pencil lead was also mixed, making it unpleasant.
[0005]
[Means for Solving the Problems]
The present invention has been made in view of the above problems, and is formed by a partition plate formed on the inner side of the outer shaft and a central shaft disposed at the center of the outer shaft, including a plurality of writing bodies including at least one ballpoint pen. Each of the writing bodies is accommodated in a storage chamber, a groove portion is formed in the center shaft, and a plate-shaped elastic member is disposed, and a rotation that rotates with the knock cap and the center shaft is provided behind the outer shaft. The rotating body is rotatable relative to the outer shaft, and further, the middle shaft is advanced by pressing the knock cap, and the tip of the plate-like elastic member is moved by the advance of the middle shaft. A multi-core writing instrument in which the writing body is caused to appear and disappear by its own weight by being elastically deformed inward, and a plurality of the storage chambers are provided. Cursive Provided with an engagement portion for preventing movement towards, and summarized in that the step portion abuts provided in the cursive its engaging portion.
[0006]
[Action]
When the ballpoint pen is engaged with the engaging portion, the tip of the ballpoint pen is lifted, and the tip of the ballpoint pen is also lifted by the elastic body.
[0007]
【Example】
Eight partition walls 2 are formed inside the outer shaft 1, and a middle shaft 3 is disposed at the center of the outer shaft 1 so as to be rotatable and movable back and forth. The inner shaft 3 has a circular shape, but a groove 4 is formed over the entire region in the longitudinal direction. In the groove 4, a plate-like elastic repellent piece 5 is arranged. In the normal state, the elastic repellent piece 5 has a force acting outward from the peripheral edge of the groove 4, but can be deformed in the direction inside the groove 4.
In addition, two engaging portions 6 and 7 are formed on the outer periphery of the front portion of the central shaft 3 in a circumferential shape, but one may be used. It is an engaging part which the step part of the ball-point pen mentioned later contacts.
[0008]
In the cursive accommodation portion 8 formed by the partition wall 2 and the central shaft 3 or the elastic repellent piece 5, two ballpoint pens 9 and 10 and six colored pencil leads 11 are accommodated.
A receiving member 12 is fixed to the inner surface of the intermediate portion of the outer shaft 1 to prevent the writing body from moving forward when the writing bodies 9 to 11 are stored.
Here, stepped portions 9 a and 10 a are formed below the ballpoint pens 9 and 10, and the stepped portion 10 a of one ballpoint pen 10 is in contact with the engaging portion 6 of the center shaft 3. And the ball-point pen 10 has floated by the contact. That is, the tip 10 b is in a state of being separated from the receiving member 12. Note that it is preferable that the engagement portion 7 is formed to have a slightly larger diameter than the engagement portion 6 in consideration of a possible dropout from the engagement portion 6.
Here, the other ball-point pen 9 is pressed against the inner wall surface of the outer shaft 1 by the outward biasing force of the elastic repellent piece 5, and the elastic repellent piece 5 moves outward with the rear end 5 a as a fulcrum. Since the elastic force is applied, the ball-point pen 9 is slightly pushed up, and the tip 9 b is separated from the receiving member 12.
[0009]
The configuration described in this section is almost the same as the configuration described in the prior art, and will be described briefly.
A three-piece chuck body 14 is fixed to the tip of the middle shaft 3 via a joint member 13. The chuck body 14 protrudes from the tip of the outer shaft 1, and the tip portion of the outer shaft 1 is a portion that opens and closes the chuck body 14. Reference numeral 15 denotes a coil spring for urging the central shaft 3 and the chuck body 14 backward.
On the other hand, a knock cap 16 is detachably attached to the rear end of the middle shaft 3, and the rear end protrudes from the rear end of the outer shaft 1.
A rotating body 18 that rotates with the middle shaft 3 and has a clip 17 is attached to the rear end of the outer shaft 1. An inward protrusion 19 is formed at a location where the concave portion 5 b of the elastic piece 5 of the rotating body 18 is located.
[0010]
Next, the operation will be described. When the ball-point pen 9 is protruded from the state of FIG. 1, the knock cap 16 is pressed. By this pressing operation, the middle shaft 3 and the elastic piece 5 attached to the middle shaft move forward. With this advance, the inward protrusion 19 of the rotating body 18 deforms the elastic piece 5 in the inward direction. Due to this deformation, the ball-point pen 9 enters the groove 4 of the center shaft 3 by its own weight, passes through the intermediate member 13, and enters the chuck body 14. Here, since the chuck body 14 is advanced and expanded by the above operation, the ballpoint pen 9 projects from the chuck body 14.
Here, when the pressing operation of the knock cap 16 is released, the chuck body 14 is retracted and closed, and the ballpoint pen 9 is gripped.
[0011]
The movement distance of the knock cap 16 is regulated by a distance X formed by the lower end portion of the knock cap 16 and the inward projection 19, and the amount of expansion of the chuck body 14 is controlled by the regulation amount. It is regulated. The amount of expansion is smaller than the outer diameter of the stepped portion 9a of the ballpoint pen 9, so that the ballpoint pen 9 does not fall out of the shaft cylinder body.
Further, a notch 16a is formed below the knock cap 16 (on the opening side). If the notch 16a is aligned with the position of the inward projection 19 and the knock cap 16 is pressed, the movement distance of the knock cap 16 increases, and the amount of expansion of the chuck body 14 increases. Drops off the shaft tube. When the ink is exhausted, the ballpoint pen can be replaced.
[0012]
Next, when it is desired to store, the knock cap 16 is pressed again with the tip end of the outer shaft 1 facing upward. By this pressing operation, the chuck body 14 is expanded again, the elastic piece 5 is deformed inward, and the ballpoint pen 9 is dropped into the accommodation chamber by its own weight.
If the pressing operation is released here, the elastic piece 5 is restored and the ballpoint pen 9 is pressed against the inner wall surface of the outer shaft 1 again. By this pressing operation, even when the front end side of the outer shaft 1 is directed downward, the front end of the ballpoint pen 9 is separated from the receiving member.
[0013]
Next, when the colored pencil lead 11 is projected, the outer shaft 1 and the rotating body 18 are relatively rotated. At this time, the side surface of the ballpoint pen 9 moves so as to rub the surface of the engaging portions 6 and 7 formed on the middle shaft 3. Eventually, the step 9 a of the ballpoint pen 9 may get over the engaging portion 6, and the step 9 a may come into contact with the engaging portion 6. In this state, the downward movement of the ballpoint pen is completely prevented.
When the colored pencil lead used for the rotation operation is positioned on the elastic piece 5, the rotation operation is stopped. Here, when the knock cap 16 is pressed, the selected colored pencil lead protrudes from the chuck body 14.
[0014]
A second example will be described with reference to FIG. This is an example in which an engaging portion with which the step portion of the ballpoint pen abuts is formed on the outer shaft 1.
The example shown in FIG. 5 is a third example, but in this example, the engaging portion 21 is also formed on the elastic piece 5. By forming the engaging portion 21 on the elastic piece 5, the tip of the ballpoint pen can be reliably separated from the receiving member 12 even when the ballpoint pen is positioned on the elastic piece 5.
[0015]
【The invention's effect】
The present invention accommodates each of the writing bodies in a housing chamber formed by a partition plate formed inside the outer shaft and a central shaft disposed at the center of the outer shaft. A groove portion is formed in the central shaft and a plate-shaped elastic member is disposed, and a knock cap and a rotating body that rotates together with the central shaft are disposed behind the outer shaft, and the rotating body is the outer shaft. The intermediate shaft is further advanced by pressing the knock cap, and the tip of the plate-like elastic member is elastically deformed inward by the advance of the intermediate shaft. A multi-core writing instrument that appears and disappears due to its own weight, and has a plurality of the storage chambers, and the side wall of the storage chamber is engaged to prevent the writing body from moving forward when the writing body is stored. When providing a part Further, since the writing body is provided with a stepped portion that abuts on the engaging portion, the projecting property of the ballpoint pen is good over time, and the writing of the color of the selected writing body itself is drawn. be able to.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a first example of the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is an enlarged view of a main part of FIG.
FIG. 4 is an enlarged view of a main part showing a second example.
FIG. 5 is an enlarged view of a main part showing a third example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer shaft 2 Partition wall 3 Middle shaft 4 Groove 5 Elastic piece 6 Engagement part 7 Engagement part 8 Writing body accommodating part 9 Ball-point pen 10 Ball-point pen 11 Color pencil core 12 Receiving member 13 Relay member 14 Chuck body 15 Coil spring 16 Knock cap 17 Clip 18 Rotating body 19 Inward projection 20 Engagement part 21 Engagement part

Claims (2)

Each of the writing bodies is accommodated in a storage chamber formed by a partition plate formed on the inner side of the outer shaft with a plurality of writing bodies including at least one ballpoint pen, and a central shaft disposed at the center of the outer shaft, A groove portion is formed and a plate-shaped elastic member is disposed, and a rotating body that rotates together with a knock cap and the central shaft is disposed behind the outer shaft, and the rotating body is relatively positioned relative to the outer shaft. Further, the center shaft advances by pressing the knock cap, and the tip of the plate-like elastic member is elastically deformed inward by the advance of the center shaft, so that the writing body is caused to appear and disappear by its own weight. In this multi-core writing instrument, a plurality of the storage chambers are provided, and a side wall of the storage chamber is provided with an engaging portion that prevents the writing body from moving forward when the writing body is stored. ,That Multifilamentary writing instrument, characterized in that the step portion abuts provided in the cursive the engaging portion. 2. The multi-core writing instrument according to claim 1, wherein, by pressing the knock cap, the tip of a plate-like elastic member disposed in the shaft cylinder is elastically deformed inward to protrude the writing body from the shaft cylinder. In addition, the multi-core writing instrument is characterized in that when the writing body is accommodated, the writing body is raised by returning the tip of the elastic member to the outside .