JP3455758B2 - Writing instrument set - Google Patents

Description

Detailed Description of the Invention

[0001]

The present invention relates consists comprises a nib on opposite sides of the axis, so-called, a writing instrument set, such as double-ended writing instruments, suitable writing instrument set to form a group of the trade <br / > Regarding.

[0002]

2. Description of the Related Art A writing instrument which can be sold as a set by forming a group as a product .
As a set , for example, there is a set made up of a plurality of types of writing instruments having different handwriting widths. A typical example is a small tube type writing instrument. The ink is common for each handwriting width.

Further, for example, in many cases of so-called resin nibs, which are made of small-tube writing instruments and synthetic resin extruded products, in many cases, the handwriting width depends on the difference in diameter of the small pipes and extruded products used for the nibs. Are different. For example, when forming a product group with different nib materials such as a brush nib made of urethane foam and the above-mentioned resin nib, or more generally, nibs of different types. May be used to make a large difference in handwriting width. Parts such as a shaft and a pen tip in each writing instrument are of the same kind, that is, common parts.

Here, the common use of various parts contributes not only to aesthetic unification but also to cost reduction in forming a group as a product. For example, it is possible to use common parts for the shafts or inks for different handwriting widths. However, in the case where the pen tip is made of a plurality of types such as those having different handwriting widths, at least the pen tip cannot be a common part, and the different pen tip is attached to the shaft as a common part. Additional structure is required.

An example of the additional structure is a pen tip holder used as an intervening member between the shaft and the pen tip. That is, the parts of the pen tip holder with respect to the shaft are made equal, and the parts with respect to the pen tip are made different according to each pen tip, and the whole of the pen tip attached to the pen tip holder is attached to the shaft. ing. However, since the use of the pen tip holder increases the number of parts, it hinders the bending angle from contributing to cost reduction.

Further, since the double-headed writing instrument having two nibs per axis can reduce the number of the whole as a whole, it can be preferably combined in forming a group as a product as described above. Therefore, it is necessary to pay more attention to cost reduction and overall quality.

[0007]

SUMMARY OF THE INVENTION According to the present invention, "a plurality of pen nibs including those having at least parts having different diameters are attached to a shaft as a common part to form a group as a product. In the writing instrument set , the diameter of the pen nib insertion hole of the shaft is such that the maximum diameter part of the multiple types of nibs to be inserted into this shaft is the size that directly fixes the middle nib. For a nib whose maximum diameter part is larger than this nib, a small diameter part to be inserted into the pen nib insertion hole of the shaft is provided on the rear side of this largest nib and fixed. In addition, for a pen tip having a smaller maximum diameter, a nib holder is interposed between the pen tip and the shaft to indirectly fix the pen tip. writing instrument set. "also, with" different nib on each side of the shaft, the shaft A pen tip that includes a main shaft and an auxiliary shaft that are fitted to each other, and inserts each of the nibs into the main shaft and the auxiliary shaft, and also inserts the main shaft and the auxiliary shaft into the main shaft as a common part. There is a plurality of types, including those having different portions of at least the diameter nib that inserted into the auxiliary shaft was also a plurality of types, including those having different portions of at least the diameter, made so as to form a group as a commodity
In the writing instrument set, the diameter of the pen tip insertion hole of the main shaft is such that the dimension of the maximum diameter portion of the plurality of types of pen tips to be inserted is the size to directly fix the middle nib. For larger pen nibs, a small diameter part to be inserted into the pen nib insertion hole of the main shaft is provided on the rear side of the maximum diameter part of this large nib to fix it, and it is also smaller. For the pen tip, a pen tip holder is interposed between this small pen tip and the main shaft to indirectly fix it.
Similarly, as for the diameter of the pen tip insertion hole of the auxiliary shaft, the dimension of the maximum diameter part of the plurality of types of pen tips to be inserted is the dimension to directly fix the middle pen tip, For a large nib, a small diameter part to be inserted into the pen nib insertion hole of the main spindle is provided on the rear side of the largest diameter part of this large nib to fix it, and a smaller nib. For this, a writing instrument set that is indirectly fixed by interposing a nib holder between the small nib and the spindle.
To . Is the gist.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The attached FIGS. 1 to 6 are drawn with a consciousness of a writing instrument set that forms a group as one product with all of those shown in these figures. Main shaft 2 and auxiliary shaft 3 forming shaft 1.
And are common parts. Of course, it does not matter if there is a difference due to printing or the like. Further, the main shaft 2 and the auxiliary shaft 3 may have a length relationship as appropriate. Although it may be inserted only in the main shaft 2, the ink occlusion body 4 illustrated as being inserted in both the main shaft 2 and the auxiliary shaft 3 is also a common component. Further, the cap 5 covering the main shaft 2 and the auxiliary shaft 3 is also a common component. Moreover, the cap 5 illustrated is of the same type as that of the main shaft 2 and the auxiliary shaft 3. That is, the illustrated main shaft 2 and auxiliary shaft 3 have outer shapes capable of being capped with the same type of cap.

Not the common parts are the nib 6 inserted into the main shaft 2 and the nib 7 inserted into the auxiliary shaft 3. It is different in one writing instrument and also different in each writing instrument. The description will be made in order from that of FIG.

First, in FIG. 1, the pen tip 6 is
A polyamide fiber bundle is joined with urethane to make a long product, and the tip of the product has a brush-like shape. The maximum diameter part is in the part protruding from the main shaft 2 and the rear part is 2
It is a reduced diameter portion of the step, and the stepped portion of the reduced diameter portion of the first step and the reduced diameter portion of the second step is locked to the front end of the rib 8 provided in an appropriate number in the inner hole of the main shaft 2, The reduced diameter portion of the eye is press-fitted into the rib 8. A space remains between the ribs 8, and this space is connected to the first-stage reduced-diameter portion and the annular space of the inner wall of the main shaft 2 (clearance that cannot be discriminated in the figure). Since it is not in contact with the end of the air vent, it is open toward the outside, and the air hole is secured in this manner. On the other hand, the pen nib 7 is similar to the pen nib 6 in terms of material, but is made of an elongated material having a relatively small diameter, and has a stepped portion between the maximum diameter portion and the reduced diameter portion behind it. Are engaged with the front ends of ribs 9 provided in the inner hole of the auxiliary shaft 3 in an appropriate number. The pen point 6 is that the rib 9 part is a press-fitting part and the open state is slightly different, but the air hole is secured.
As in. Further, the diameter of the portion of the main shaft 2 into which the pen tip 6 is inserted is larger than the diameter of the portion of the auxiliary shaft 3 into which the pen tip 7 is inserted. Basically, this relationship may be appropriately satisfied because there is a pen tip insertion structure that does not lock, but in the illustrated case, the diameter of the portion into which the first-stage reduced diameter portion of the pen tip 6 is inserted is the pen tip 7 The diameter of the inscribed circle of the rib 8 is also larger than the diameter of the portion into which the maximum diameter portion of the rib 8 is inserted.

Next, referring to FIG. 2, the pen tip 6 and the pen tip 7 are made of polyethylene terephthalate fibers which are bundled with an appropriate adhesive to form a long product. It is shaped. In both cases, the reduced diameter portion behind the maximum diameter portion has only one step, and the air holes are secured in the same manner as in the pen tip 7 of FIG.

Next, referring to FIG. 3, the pen tip 6 is
Only the tip shape is different from the pen tip 6 in FIG.
Since the pen point 6 in FIG. 1 does not have elasticity, the change in handwriting width is small, but it is not suitable for surface painting like the nib 6 in FIG. 2, but is for a considerably thick handwriting. On the other hand, the pen tip 7 is made of the same material as the pen tip 6, but has a small diameter. However, it is still for thicker handwriting than the ones described below. Since the pen tip 7 has a reduced diameter portion following the maximum diameter portion in two stages due to the relative small size of the insertion hole of the auxiliary shaft 3, the nib 6 is different from the pen tip 6 in FIG. It is similar.

Next, referring to FIG. 4, the pen tip 6 is
The polyacrylonitrile fibers are appropriately bundled with an adhesive to form a long and thin product, which has a shape as shown in the drawing. It is for handwriting thinner than the pen tip 7 in FIG. 3, and a pen tip holder-10 is interposed. That is, the pen tip holder 10 and the pen tip 6 are integrated into a pen tip body, and the rib 8 is formed.
From the front to the air hole, the pen tip 6 in FIG.
It is similar to. On the other hand, the pen tip 7 is equal to the pen tip 7 of FIG. As described above, when different ones have the same pen tip on one side and a different pen tip on the other side, the pen tips 7 inserted into the auxiliary shafts 3 are equalized, and the main shaft 2 It is preferable that the pen nibs 6 to be attached to the above are different from each other.

Next, referring to FIG. 5, the pen tip 6 is
The material is similar to the pen tip 6 and the like in FIG. 2, but it is thinner and the tip shape is slightly different. The shape is such that the change in handwriting width is less likely to occur. However, in writing and writing that is not worn, the writing may be thicker than the pen tip 6 in FIG. It depends on the individual difference in writing pressure. Further, it is the same as the pen tip 7 in FIG. 4 in that the pen tip holder 10 is interposed although the shape is different. On the other hand, the pen nib 7 is a kind of so-called resin nib, which is manufactured from an extruded product of polyacetal. Again, it is via the pen tip holder-10.

Next, in FIG. 6, the pen tip 6 and the pen tip 7 are different in diameter from the pen tip in FIG. It is the same in the point that it is interposed. The thickness relationship of the handwriting becomes thinner in the order of the nib 6 of FIG. 5, the nib 6 of FIG. 6, the nib 7 of FIG. 5, and the nib 7 of FIG. For example, according to a general handwriting width display, 0.8 mm, 0.5 mm, 0.3 mm,
As I said it was 0.1 mm.

In addition to the above-mentioned non-commonality of nibs, the inks used are not strictly common. That is, in the case shown in FIGS. 1 and 2, the same kind of ink is contained and the inks shown in FIGS.
In the case of
Further, all of the inks shown in FIGS. 1 to 6 contain pigment ink (not shown), but the inks shown in FIGS. 1 and 2 are shown in FIGS. 3 to 6. The pigment concentration is lower than that of the ink contained in the product, for example, about half.

Here, those shown in FIGS. 1 to 6 are as follows.
Both are assembled as follows, for example. First, the pen tip 7 is attached to the auxiliary shaft 3, the ink occlusion body 4 is inserted from the rear part of the auxiliary shaft 3, and the ink occlusion body 4 part of this partially assembled product is inserted from the rear part of the main shaft 2, Accordingly, after the main shaft 2 and the auxiliary shaft 3 are completely fitted, the injection needle for ink filling is deeply inserted from the front side of the main shaft 2 (the pen tip 6 is not inserted), and a predetermined amount of ink is injected. , The needle is retracted and a predetermined amount is re-injected, thus forming an air pocket in the central portion of the ink occlusion body 4 and filling a predetermined amount of ink as a whole, then the needle is pulled out, and the pen tip 6 is placed in front of the spindle 2. Insert from the side. Of course, different assembly methods may be adopted, such as when the ink occlusion body 4 is composed of two parts, one for the nib 6 and one for the nib 7, but at least one ink occlusion body 4 can be used. The reduction in the number of parts greatly contributes to the cost reduction, and at least the above-described assembly can be performed. In particular, the relatively thick nib 6 is relatively thin nib 7 (there are some exceptions. However, as a whole, it has such a tendency), and the relatively thick pen tip 6 is inserted from the end side of the ink occlusion body 4 in which the needle hole is likely to remain. What is possible is convenient for improving the ink connection in both the pen tip 6 and the pen tip 7 while taking into consideration the variation in the length of the ink occlusion body 4. Incidentally, with respect to reference numerals not shown and described, reference numerals 11 and 12 denote locking walls for limiting the displacement of the ink occlusion body 4 in the front-rear direction, and 13
Indicates locking walls for restricting the lateral displacement of the ink occlusion body 4, respectively.

Although an example has been described above, other various modifications can be made without departing from the scope of the present invention. For example, form a group of products and sell them as a set.
Therefore , the cap is a common part in consideration of the accommodation property in the container, but different caps may be capped, such as a cap that shows the type of pen tip in terms of shape. Further, the types of pen nibs can be combined in various ways, and it is also possible to have an appropriate pen nib such as a ball pen nib not described above. Furthermore,
What has been described with reference to the drawings is related to all the gist of the present invention at the same time. It is also possible to insert them on both sides of a single writing instrument, and to combine these, or to combine a double-headed writing instrument and a writing instrument that does not.

[0019]

According to the present invention, it is possible to reduce the use of the pen tip holder and to reduce the diameter of most of the pen tips.
It can be made into a common component sufficiently, and the contribution to cost reduction will be extremely large.

[Brief description of drawings]

FIG. 1 is a partially cutaway vertical sectional view showing an example of an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a partially missing portion showing an example of an embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of a partially missing portion showing an example of an embodiment of the present invention.

FIG. 4 is a partially cutaway vertical sectional view showing an example in one embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view of a partly cutaway showing an example in one embodiment of the present invention.

FIG. 6 is a longitudinal cross-sectional view of a partly cutaway showing an example in one embodiment of the present invention.

[Explanation of symbols]

1 axis 2 spindles 3 auxiliary axis 4 Ink storage 5 caps 6 Nib 7 Nib 8 ribs 9 ribs 10 Pen tip holder

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Sho 56-24286 (JP, U) Rib 62-180588 (JP, U) Rib 56-21583 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B43K 27/08 B43K 8/02

Claims (2)

(57) [Claims] A writing instrument set in which a plurality of nibs including at least parts having different diameters are attached to a shaft as a common part to form a group as a product. The diameter of the pen nib insertion hole on the shaft is such that the size of the largest diameter part of the multiple types of nibs to be mounted on this shaft is the size that directly fixes the middle nib. For a pen tip with a larger maximum diameter than that of the larger tip, a small diameter portion to be inserted into the pen tip insertion hole of the shaft is provided and fixed on the rear side of the maximum diameter portion of this large nib. Further, a writing instrument set in which the pen tip holder is interposed between the pen tip and the shaft to indirectly fix the pen tip having a smaller maximum diameter. Bei 2. A method different nib on each side of the axis
The shaft consists of a main shaft and an auxiliary shaft that are fitted together,
Plural types, including ones in which each of the nibs is inserted into each of the main shaft and the auxiliary shaft, and in which the main shaft and the auxiliary shaft are common parts, and the pen nibs to be inserted into the main shaft have at least a portion having a different diameter. and then, even nib that inserted into the auxiliary shaft and a plurality of types, including those having different portions of at least the diameter
Also, a writing instrument set that forms a group as a product.
A Tsu bets, the diameter of the nib insertion hole of the main shaft is dimensioned for a maximum diameter among the plurality of kinds of nib which insertion has been dimensioned to fix the intermediate nib directly nib For larger pen nibs, a small diameter part to be inserted into the pen nib insertion hole of the main shaft is provided on the rear side of the maximum diameter part of this large nib to fix it, and it is also smaller. For the pen tip, a pen tip holder is interposed between this small pen tip and the main shaft to indirectly fix it.
The diameter of the pen tip insertion hole of the auxiliary shaft is such that the maximum diameter part of the multiple types of nibs to be inserted is the size that directly fixes the middle nib and is larger than this nib. For this, a small diameter part to be inserted into the pen nib insertion hole of the main shaft is provided on the rear side of the maximum diameter part of this large nib to fix it. Is a writing instrument set that is indirectly fixed by interposing a nib holder between the small nib and the spindle.