JPS60105597A - Ball pen - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a writing instrument with a ball point pen, and more particularly to a writing instrument with a ball point pen suitable for using water-based ink.

Conventional writing instruments with ball point pens have been mainly suitable for using oil-based inks with high viscosity. Recently, writing instruments with ball point pens that use water-based ink with low viscosity have also been developed. However, in this writing instrument, the gap between the ball and the part that holds the ball and the ink guiding part for guiding the ink on the ball's circumferential surface were formed by cutting, so the dimensional accuracy was maintained very accurately. It has been found that it is difficult to transfer (guide) an appropriate amount of low-viscosity water-based ink to the circumferential surface of the ball. If the above-mentioned dimensional accuracy is not always accurately maintained, there will be problems such as -1: lines written on paper by this writing instrument may become blurred, or ink may leak from the writing instrument.

The main object of the present invention is to provide a writing instrument with a ball point pen that can solve the above-mentioned problems and can use both low-viscosity oil-based ink and water-based ink.

Another object of the present invention is to be able to continuously transfer an appropriate amount of low viscosity oil-based ink and water-based ink onto the ball surface, and to make the written lines clear and clear without blurring or blurring, regardless of the writing speed. You can continue writing for a long time,
Another object of the present invention is to provide a writing instrument with a ball point pen that can continuously supply ink to the ball surface without causing ink to drip.

According to the present invention, it has a large number of capillary-shaped ink flow holes therein from one end to the other end, has a short cylindrical part extending from the one end, has the short cylindrical part, and has the short cylindrical part. a short metal tube having an annular constricted portion at the distal end periphery of the cylindrical portion; rotatably fitted and held within the annular constricted portion and the short cylindrical portion;
and a writing instrument with a pole point pen, comprising: a hard ball that is in contact with one end of the thin metal rod in the short cylindrical portion; and a water-based ink guiding means connected to the other end of the thin metal rod. be done.

According to the present invention, the tube further includes a thin tube whose front end is annularly constricted to form an opening, and a short hollow cylindrical portion at the front end portion of the thin tube, which is tightly inserted into the thin tube. The narrow rod has a large number of capillary-like ink flow holes therein from one end to the other, and between one end of the narrow rod and an annular constriction around the opening. A writing instrument with a ball point pen is provided, which comprises a ball rotatably supported within the short cylindrical portion and a water-based ink guiding means connected to the other end of the narrow rod.

According to the present invention, the opening is further narrowed into an annular shape.
a thin tube consisting of a front end that is connected to the front end, a small diameter tip that continues to the front end, a truncated conical part that continues to the small diameter tip, and a large diameter cylindrical part that continues to the truncated conical part, and a truncated conical head at the tip. Continuing from the above head (a hollow nib holder consisting of a guide tube part,
The thin tube has a large diameter cylindrical portion tightly inserted into the nib holder, a thin rod tightly inserted into the small diameter tip of the thin tube, and the narrow rod has a shape inside thereof. a ball rotatably supported between an annular constriction forming the opening and a front end of the thin rod; a truncated conical part, a large diameter cylindrical part, and a guide tube part of the pen light body holder; a cylindrical portion having a longitudinal notch following the small diameter portion; a flange at the tip of the cylindrical portion; and a flange on the outside of the cylindrical portion. an intermediate holder comprising one groove formed in the longitudinal direction of the intermediate holder; a tip of the groove in the intermediate holder extends radially outward along an inner surface of the flange; The nib holder is tightly inserted into a cylindrical part of the intermediate holder, and has a generally cylindrical body into which the intermediate holder is inserted, and the body is comprised of a front part and a rear part. The front part is made up of a small-diameter conical cylinder part at the tip, a large-diameter cylinder part following this, and a slightly smaller-diameter cylinder part following this, and the above-mentioned small-diameter cylinder part The part has a male thread on its outer periphery, and the large diameter cylindrical part has a number of high ridges in the longitudinal direction on the inner peripheral surface of the front part thereof, and is arranged between these high ridges. having low protrusions;
The ink storage body is housed inside the large diameter cylindrical portion and the slightly small diameter cylindrical portion, and the ink storage body is
The front end portion of the ink storage body is supported by the inner surface of the low protrusion, and the rear end portion of the ink storage body extends outward from the rear end of the front part of the body. A ball having a substantially cylindrical shape, having an open bottom at the front end and a closed bottom at the rear end, and having a female thread on the inner peripheral surface of the front part of the rear part that can be engaged with the male thread. A writing instrument with a point pen is provided.

Other objects and advantages of the present invention will be apparent from the following detailed description with reference to the accompanying drawings.

1 is a longitudinal cross-sectional view of a first embodiment of a ball point pen in a writing instrument according to the present invention, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 4 is a longitudinal cross-sectional view of a second embodiment of the ball point pen according to the present invention, FIG. 4 is a cross-sectional view taken along line B-B in FIG. 3, and FIG. FIG. 6 is a partially cutaway vertical cross-sectional view of a fourth embodiment of the ball point pen of the present invention. , FIG. 7 is a vertical sectional view of a fifth embodiment of the ball point pen of the present invention, and FIG. 8 is a longitudinal sectional view of a sixth embodiment of the ball point pen of the present invention.
FIG. 9 is a longitudinal sectional view of the embodiment, and FIG. 9 is taken along the line CC in FIG.
10 is a longitudinal sectional view of the seventh embodiment of the ballpoint pen according to the present invention, and FIG. 11 is a cross-sectional view taken along line DD in FIG. 10. FIG. 12 is a longitudinal cross-sectional view of the eighth embodiment of the ball point pen according to the present invention, and FIG. 13 is a cross sectional view taken along the ninth embodiment of the ball point pen according to the present invention. FIG. 14 is a cross-sectional view taken along line E-4 in FIG. 13, and FIG. 15 (A) and (B) are
is a partially cutaway view of the tenth embodiment of the ball point pen of the present invention, and FIG. 16 is a partially cutaway vertical cross-sectional view of the eleventh embodiment of the ball point 1-pen of the present invention, FIG. 17 shows pole points 1 to 1 in the present invention.
It is a partially cutaway vertical cross-sectional view of the twelfth embodiment of the pen, and the first
Figure 8 shows the thirteenth part of the Paul Point I pen in the present invention.
FIG. 19 is a partially cutaway vertical cross-sectional view of the embodiment.
20 is a partially cutaway vertical sectional view of the holder to be fitted to the outside of the guide tube part in the thirteenth embodiment of FIG. 8; FIG.
FIG. 21 is a partially cutaway vertical cross-sectional view of the front part of the podium into which the boulder of FIG. 19 is to be inserted; FIG. It is a front view, and the second
Figure z (A) is a partially cutaway longitudinal cross-sectional view of the rear part of the podium, Figure 22 (B) is an embodiment showing an assembled state, and Figure 23 is a ball point pen according to the present invention. FIG. 24 is a partially cutaway vertical cross-sectional view of the first embodiment of the writing instrument with an ink tank before centrifuging the ink tank, and FIG. 24 is a partially cutaway longitudinal cross-sectional view of the embodiment of FIG. FIG. 25 is a partially cutaway vertical sectional view showing another example of the ink tank method, and FIG. 26 is a second embodiment of the writing instrument with a ball point pen according to the present invention,
27 is a partially cutaway longitudinal sectional view of a cartridge type in which the ink storage body is replaceable; FIG. 27 is a partially cutaway vertical sectional view showing a spare ink storage body used in the writing instrument of the embodiment shown in FIG. 26; FIG. FIGS. 28(a) and 28(b) show another embodiment of the ink storage body replacement method. 29 and 30 are explanations of the ink flow holes 2 of the narrow rod 3.

In the embodiment shown in FIGS. 1 and 2, the capillary 1 is
It is made of a highly wear-resistant and chemical-resistant metal such as stainless steel, and has a length of about 151 m, an inner diameter of 0.56 am, and an outer diameter of about 81 m.

The thin metal rod 3 is tightly inserted into the thin tube 1, one end of the thin rod 3 is placed at a position slightly inward from one end of the thin tube l, and the other end of the thin rod 3 is placed inside the thin tube 1. It extends outward from the end. The narrow rod 3 has inside thereof a large number of capillary-shaped inid flow holes 2 extending parallel to the longitudinal direction from one end to the other. The ink flow holes 2 have a diameter of about 0.11+u. A small hole 4 is formed in the tube wall at the middle part of the thin tube l,
A suitable adhesive 5 is injected through this small hole 4, thereby fixing the narrow rod 3 to the thin tube l. Since one end of the narrow rod 3 is located slightly inward from one end of the thin tube 1, the thin tube 1 has a short cylindrical portion 6 at one end thereof. The distal end edge of the short cylindrical portion 6 is narrowed into an annular shape, and an opening 9 is formed therein. One end of the narrow rod 3 is flat and forms a ball receiving portion 7. The ball 8 is housed in the short cylindrical part 6 and is rotatably supported by the inner peripheral edge of the opening 9 and the ball receiving part 7, and a part of the outer surface of the ball 8 is
It is exposed to the outside through the opening 9.

In the embodiment shown in FIGS. 3 and 4, the narrow rod 3 is tightly inserted only into the forward part of the thin tube 1, and by means of a linear or dot-like caulking 10 in the wall of the middle part of the thin tube 1. The narrow rod 3 is fixed to the thin tube 1. A rod-shaped relay core 11 made of a fiber bundle is inserted into the rear part of the thin tube 1.
The inner end of the relay core 11 is in contact with the rear end surface of the narrow rod 3. A small hole 4 is formed in the intermediate wall of the thin tube 1, and the relay core 11 is fixed to the thin tube 1 by an adhesive 5 injected through the small hole 4. Ink flow holes 2 formed in the narrow rod 3
The number is 3 to 16, preferably 8.

In the embodiment shown in FIG. 5, the ball receptacle 7 at one end of the narrow rod 3 is concave, and the ball 8 rotatably contacts this concave ball receptacle 7 on its inner and outer surfaces. are doing.

In the embodiment shown in FIG. 6, the center part of the ball receiving part 7 at one end of the narrow rod 3 is pointed, and the ball 8 comes into contact with this pointed ball receiving part 7 on the outer surface of its inner capsule. ing. In this case, the ball receiving portion 7 is preferably made of a particularly wear-resistant material.

In the embodiment shown in FIG. 7, the narrow rod 3 having the ink flow holes 2 inside has an enlarged head I3 integrally at its tip, and the portion before the tip of the narrow rod 3 has an enlarged head I3 at its tip. It has a stepped portion (shoulder) 12 at the boundary between it and the enlarged head 13. In this embodiment, a short cylindrical portion 6 is formed at one end of the enlarged head 13, and the distal end edge of the short cylindrical portion 6 is narrowed into an annular shape to form an opening 9 there. The inner bottom surface of the short cylindrical portion 6 forms a concave surface, and the ink flow holes 2 are opened in this concave surface. The ball 8 is housed within the short cylindrical portion 6 and is rotatably supported by the inner peripheral edge of the opening 9 and the concave surface of the short cylindrical portion 6.

In the embodiment shown in FIGS. 8 and 9, the capillary 1 has an enlarged head 13 integrally at its distal end, and the border between the enlarged head 13 and a portion other than the distal end of the capillary 1 is It has a stepped portion 14 . A short cylindrical portion 6 is formed at one end of the enlarged head 13,
A ball 8 is supported as in the embodiment shown in FIG.

In the embodiment shown in FIGS. 10 and 11, the thin tube 1 has an enlarged head 13 integrally at its distal end, and a short cylindrical portion 6 is formed at one end of the enlarged portion 13. A stepped portion 16 is formed at the inner bottom of the cylindrical portion 6, and a flange-shaped or protruding pull-out stop portion 15 is formed at the tip of the narrow rod 3, and this pull-out stop portion 15 is formed at the tip of the narrow rod 3. 16.

The relay core 11 is inserted into the thin tube 1 similarly to the embodiment shown in FIG. In the embodiment shown in FIG. 12, the thin tube 1 has a short cylindrical portion 6 that is integrally enlarged at its distal end, and the thin rod 3 has a collar-like pullout stopper 1 at its distal end.
5 is formed, and this pull-out stop part 15 is engaged with a shoulder in the enlarged short cylindrical part 6 of the thin tube 1. This removal stopper 15 has a concave ball receiving portion 7 at its tip. In the embodiment shown in FIGS. 13 and 14, the capillary tube 1 has an integrally enlarged short cylindrical portion 6 at its distal end, and a short narrow rod 3 is tightly disposed within the short cylindrical portion 6. The ball 8 is rotatably supported by the tip end face of the narrow rod 3 and the inner peripheral edge of the opening l.

The narrow rod 3 has a length of about 1 to 5 mm. A relay core 11 is inserted inside most of the tubule 1, and the oviduct 1
The relay core 11 is fixed to the thin tube (2) by a caulking portion 10 at the rear end.

In the embodiment shown in FIG. 15(a), the thin tube I is composed of a small diameter tip I7, a truncated conical part 18 following this, and a large diameter cylindrical part 19 following this. , the hollow pen nib holder 20 has a truncated conical head 21 at its distal end and a guide tube section 22 at its rear end.

The thin tube 1 is inserted into the pen tip holder 20. A protrusion 23 is provided on the inner wall surface of the guide tube portion 22 of the nib boulder 20, and the rear end of the thin tube 1 is in contact with the protrusion 23. The relay core 11 is inserted between the truncated conical portion 18 and the large-diameter cylindrical portion 19 of the thin tube 1 and the guide tube portion 22 of the nib holder 20, and is inserted into the guide tube portion 22 of the nib holder 20.
Extending outside. The caulking portion 2 is attached to the guide tube portion 22.
4 is formed, whereby the relay core 11 is fixed to the pen nib holder 20. In addition, if necessary, thin tube l
It is also possible to have the same diameter as the small-diameter tip portion 17.

FIG. 15(b) shows another example of the relay core 11. That is, lla is a pipe made of metal or synthetic resin, and a large number of protrusions 11c are formed in the longitudinal direction on the inner wall surface, and felt synthetic fibers 11 are arranged inwardly in contact with the protrusions 11c.
b is filled.

In the embodiment shown in FIG. 16, the narrow rod 3 has a recess 25 with a V-shaped cross section in the center of its tip surface, forming an ink reservoir.

In the embodiment shown in FIG. 17, the narrow rod 3 has a concave or curved surface 26 at the center of its tip surface, forming an ink reservoir.

In the embodiment shown in FIG. 18, the capillary consists of a small diameter tip 17, followed by a truncated conical part 18, and further followed by a large diameter cylindrical part 19. The portion 19 is inserted into the entire length of the nib boulder 20 and extends outward from the nib boulder 20. Cylindrical part 19
is fixed to the nib holder 20 by a caulking part 24 formed on the guide tube part 22 of the nib boulder 20. The relay core 11 is inserted into the truncated conical portion 18 and the cylindrical portion 19 of the thin tube 1 and extends outward from the thin tube 1 .

Shown in FIG. 19 is an embodiment of an intermediate holder 27 for the nib holder shown in FIG.
The intermediate holder 27 is a substantially cylindrical part 28, which has a flange 29 at its tip, and has one longitudinal groove 30 on the outside of the cylindrical part 28, and the tip of this groove 30 is
It extends radially outward along the inner surface of flange 29 . The cylindrical portion 28 of the intermediate holder 27 is
The guide tube section 22 shown in FIG. 18 has an inner diameter that allows for tight insertion. The intermediate holder 27 has a small diameter section 31 at its rear end, followed by four longitudinal notches 32.
It has a small diameter cylindrical portion 33 having a diameter.

Shown in FIGS. 20 and 2I is an embodiment of a front part 35 of a generally cylindrical body 34 into which is inserted the intermediate boulder 27 shown in FIG.
5 consists of a small-diameter conical cylinder part 36 at the tip, a large-diameter cylinder part 37 following this, and a slightly small-diameter cylinder part 38 following this. It has a male thread 39. The large-diameter cylindrical portion 37 has a large number of tall longitudinal protrusions 40 on its front inner peripheral surface, as shown in FIGS. 20 and 21. In what is shown in the drawing, there are four protrusions 40, which are arranged at equal intervals in the circumferential direction. The large diameter cylindrical portion 37 also has a number of low longitudinal ridges 41 on its front inner circumferential surface, as clearly shown in FIG.

In what is shown in the drawings, each of the low protrusions 41 is located between two adjacent tall protrusions 40.

An ink absorbing body 42 made of felt, synthetic fiber bundle, etc. is housed inside the large diameter cylindrical portion 37 and the slightly small diameter cylindrical portion 38, and the front end portion of the ink absorbing body 42 is attached to the inner surface of the low protrusion 41. The rear end portion of the ink absorber 42 extends outwardly from the rear end of the front part 35 of the body 34 .

What is shown in FIG. 22(a) is an embodiment of the rear part 43 of the body 34, which has a roughly cylindrical shape and has an open front end. The rear end has a closed bottom 44. The rear part 43 has a female thread 45 on the inner circumferential surface of the front part thereof, which can be engaged with the male thread 39 described above.

Guide tube portion 22 of the pen nib holder 20 shown in FIG.
is inserted into the intermediate holder 27 shown in FIG. 19 from the front, then this intermediate holder 27 is inserted into the front part 35 of the body 34 from the front, and then One writing instrument with a pole point pen is assembled by connecting the front end of 43 to the rear part of the front part 35 of the body 34 through threaded engagement of the screws 39 and 45. In this case, the ink storage body 42 is sufficiently impregnated with water-based ink in advance. The small diameter portion 31 of the intermediate holder 27 is recessed into the ink storage body 42 with the rear portion of the relay core 11 still located inside. Since a notch 32 is formed in the small diameter portion 31, the ink storage body 42 comes into contact with the relay core 11 through this notch 32, and the ink storage body 4
2 is transferred to the relay core 11. As a result, the water-based ink impregnated in the ink storage body 42 is impregnated into the relay core 11 by capillary action, and is further supplied to the ink flow holes 2 in the narrow rods 3. When writing on paper with this writing instrument, the ball 8 is rotated, and the ink at the front opening of the ink distribution hole 2 is transferred to the circumferential surface of the ball 8, and writing is performed by the rotation of the ball 8. . 3.10.13.15.16 and 17 are the same as those in the embodiment shown in FIG. 18. It will be obvious to those skilled in the art that it can be used by inserting it into the holder 27.

1st. 5. 6. 7. The parts of the embodiment shown in FIGS. 8 and 12 are inserted into the body 34 of the embodiment shown in FIGS. It will be obvious to those skilled in the art that writing instruments can be assembled by contacting.

Note that the ink flow holes 2 preferably have a diameter of 0.01 mm.
~0.211II11.

The method for manufacturing the narrow rod 3 having a large number of ink flow holes 2 is as follows.

Inside a hollow cylindrical member, several fine wires (with a diameter of 10 μm to 200 μm) made of low melting point metals or plastics that melt, burn out, or volatilize at low temperatures are arranged in parallel in the length direction. In the gap between the wires, a metal powder surface pI of high melting point stainless steel or titanium, which has excellent corrosion resistance and wear resistance! Make a product filled with 5μ to 100μ, then heat it at 1000℃ to 1
By heating and sintering at 600° C. and melting, burning out, or volatilizing only the wire rod, capillary-shaped ink flow holes can be formed there. In this case, the diameter of the ink flow hole 2 is approximately the same as the diameter of the wire. If necessary, several of the above wire rods can be bundled together and used as a single wire rod. In this case, 1.
The cross-sectional shape of the formed ink flow holes 2 varies depending on the number of bundled wires H, but for example, when three wires are used in a bundle, it becomes as shown in FIG. 29.

That is, the ink flow holes 2 are formed according to the outer shapes of the three wire rods (in the case of FIG. 29, they are shaped like clover leaves).

Another method for manufacturing the thin rod 3, which has this shape and is useful for good capillary action and transfer of an appropriate amount of ink, is as follows.

A plurality of fine wire rods 360 made of high melting point metal are wound around each of the above-mentioned low melting point fine wire rods and are inserted into a hollow cylindrical member as a bundle, and then heated,
A spiral ink flow hole can be formed by eluating a fine wire with a low melting point from a hollow cylindrical member and welding a high melting point metal to each other. The vertical cross-sectional shape of the ink distribution holes formed in this case is shown in the figure.
As shown in the figure. As shown there, high melting point metals welded to each other are spirally located on the inner wall surface of the ink flow hole 2. It is located in this lizard shape.

This helical shape provides good capillary action and optimal retention of ink transfer.

In addition, it is also possible to fit the narrow rod into a thin tube having a short cylindrical portion and to infiltrate the melt between them to integrally form both.

In addition, if necessary to make the thin tube 3 small in diameter,
No metal powder is used, and vertical grooves 3 are formed on the outer periphery as shown in Figure 31.
After inserting several rod-shaped members each having a high melting point fine wire 360 wound around a low melting point fine wire 360 into a small diameter pipe 400 having a diameter of 90, and inserting this small diameter pipe 400 into the thin tube 1. Alternatively, a method of heating and sintering together with the thin tube 1 may be used.

In this case, during sintering, the fine wire with a low melting point is eluted, and the fine wire with a high melting point 360, the small diameter pipe body 400, and the thin tube I are integrally sintered and bonded. Further, a vertical groove 390 formed on the outer periphery of the small diameter pipe body 400 between the thin tube 1 and the small diameter pipe body 400 also functions as an ink flow hole.

It is also obvious that a long thin rod made by the various manufacturing methods described above can be cut to provide a thin rod of a desired length.

Furthermore, metals used for the narrow rods include metal nitrides,
It is possible to use a material that partially contains carbide or the like.

The ball can also be made of hard materials such as cemented carbide or ceramic.

Next, a writing instrument using the pole point pen of the present invention will be briefly explained as shown in FIG. 23 and below.

No. 2311 (a) is an integrally formed body 34a
A separate ink adjustment member 100 is located in front of the ink adjustment member 100. This ink adjustment member 100 has a through hole 101 that penetrates from the front to the rear, and a slot 102 in the direction of the through hole 101 that communicates with the outer peripheral surface of the adjustment member 1oo is formed at an intermediate position of the through hole 101. and the adjustment member 1o
A large number of fins 103 are formed on the outer peripheral surface of the fins 102 at the positions where the fins 102 are formed.

Furthermore, an ink adjustment rod 104 is inserted into the through hole 101, and the shape of the ink adjustment rod 104 has an outer dimension that is approximately the same as that of the through hole, as shown in FIG. 101, several slits 105 are formed on the outer circumferential surface, leading from one end to the other end in the axial direction. The tip opening of the body 348 is shown in FIG.
The tip of the embodiment shown in FIG. An ink tank 106 is located inside the ink tank 106 , and the front part of the ink tank 106 is sealed by a ball 107 , and the rear part projects outward from the opening of the body 34 and serves as a push-in part 108 . ing. Note that 200 is a gap, 201 is a clip, and 203 is fitted into the head of the cap 200 and serves to fix the clip 201.
it', *large and small caps, and 204 indicates a bench knob tip protection moon fixed inside this small cap 203. This protective material 204 is made of sponge, felt, soft rubber, etc., and prevents the ink seeping into the tip of the bench tube from drying out, and also prevents the adhesion of dust and the like.

Next, FIG. 24 shows a case where the state shown in FIG. 23 (A) is used. As shown there, the ink tank 106 is pushed by the pushing part 108.
The ball 107 that is fitted into the rear end of the ink adjusting member 100 and seals the opening of the ink tank is moved, and the ink in the tank is transferred to the through hole 1 of the ink adjusting member 100.
It has been moved to 01. If the amount of ink that has flowed into the through hole 101 exceeds the appropriate amount, it leaks out from the slit 1O5 into the gaps between the many fins 103 and is stored, and the amount of ink stored in the pen tip decreases as the ink is consumed. next,
The embodiment shown in FIG. 25 will be explained. This embodiment is basically the same as the embodiment shown in FIGS. 23 and 24. The difference is that the ink tank 106 is of a replaceable cartridge type. That is, when the ink in the ink tank 106 decreases due to use, the rear body part 43 is pulled out from the joint member 300, the ink tank 106 is exposed, and a new ink tank filled with another ink is replaced with the ink adjustment member. Fit it to the rear of 100. The joint member 300 has one end fitted into the body 34, and the other end fitted into an opening in a rear part 43 of the body. The ink tank 106 is entirely covered by the rear body part 43, and as in the embodiment shown in FIG.
It does not protrude outward. Next, an example with respect to FIG. 26 will be described.

In this embodiment, an ink storage body 42 is located inside the body 34. Further, the ballpoint pen tip of the embodiment shown in FIG. 15 or 18 is fitted into the tip opening of the body 34, and the rear end of this ballpoint pen tip is fitted into the tip of the ink storage body 42. It is embedded.

When the ink stored in the ink storage body 42 decreases due to use of the writing instrument of this embodiment, the front portion 34b of the body 34 is removed from the body 34 and the ballpoint pen tip and the ink storage body 42 are integrated. Front part 34b
Throw away the ballpoint pen with the tip still attached.

Next, after that, the ink storage body in the state shown in FIG. 27 is used. In the ink storage body shown in FIG. 27, the ink storage body 42 is housed in a cover 302, and the opening tip of this cover 302 is fitted into the front part 34b shown in FIG. 26. A cartridge cap 303 is fitted to the tip of this front portion 34b, and covers the ballpoint pen tip. Therefore, when using the cartridge shown in FIG. 27, the cartridge cap 303 is removed and the cover 30 is removed from the front part 34b.
2 to expose the ink absorbing body, and then inserting the ink absorbing body into the body 34 so as to cover the ink absorbing body 42 with the body 34 shown in FIG.
This is done by fixing the body 34 to the front part 34b in FIG. The cap 200 shown in FIG. 26 can be used as is.

Next, FIG. 28 will be explained.

The one in this example is Cart 'J y Dekatsuma-302.
There is an ink absorber 42 inside the ink absorber 4.
The rear opening of the cartridge Nojikanomer 300 in which No. 2 is stored is sealed by a tail plug 302, and a ballpoint pen tip is fitted into the front opening of the cartridge cover 302.

Further, there is a rear part 43 of the body on the outside of the cartridge cover 302, and an elastic adjustment body 305 is interposed between the rear part 43 of the body and the tail plug 304 of the cartridge cover 302. Further, the front part 35 of the body is fitted into the front opening of the rear part 43 of the body, and the rear part 43 of the body and the front part 3 of the body are fitted.
5, the cartridge cover 302 is firmly fixed. Further, the cartridge cover 302 protrudes from the tip opening of the front part 35 of the body, and therefore, the tip portion of the pole pliers knob fixed to the tip of the cartridge cover 302 also protrudes outward.

To replace the ink absorber in this embodiment, separate the rear part 43 of the body from the front part 35 of the body, take out the cartridge cover 302 with the ballpoint pen tip attached, and replace it with another new pair of pole pliers. This is done by inserting the cartridge cover 302 as shown in FIG. 28(a).

Note that it is not impossible to replace only the ink storage body 42 inside the cartridge cover. In that case, tail plug 30
4, and pull out the ink absorber 42 from the inner cavity.
The ink storage body housed in a case 400 as shown in FIG. 28(B) is removed from the case 400 by removing the plug 401 and replaced.

[Brief explanation of drawings]

Figure 1 is a sectional view of the first embodiment. Figure 2 is a sectional view taken along the line AA in Figure 1. Figure 3 is a sectional view of the second embodiment. Figure 4 is a sectional view taken along the line B-B in Figure 3. FIG. 5 is a partially cutaway sectional view of the third embodiment. FIG. 6 is a partially cutaway sectional view of the fourth embodiment.
7 is a sectional view of the fifth embodiment; FIG. 8 is a sectional view of the sixth embodiment; FIG. 9 is a sectional view taken along line c-c; 11 is a cross-sectional view of the seventh embodiment. FIG. 12 is a cross-sectional view of the eighth embodiment. FIG. 13 is a cross-sectional view of the ninth embodiment. 13. E=-E cross-sectional view. FIG. 15 (a) and (b) are partially cutaway views of the 10th embodiment. FIG. 16 is a partially cutaway sectional view of the 11th embodiment. Partially cutaway cross-sectional view of the embodiment Fig. 17 LJ, Fig. 13
FIG. 19 is a partially cutaway view of the embodiment; FIG. 20 is a partially cutaway view of the holder that fits on the outside of the guide tube in the thirteenth embodiment; FIG. 21 is a partially cutaway view of the front of the body. , FIG. 20 is a sectional view taken along line F-F. FIG.
B) is a partially cutaway diagram of one embodiment showing the assembled state. FIG. 23(A) is a partially cutaway diagram of the first embodiment of an ink cartridge type writing instrument using a ball point pen. 24 is a partially cutaway view of the ink adjustment rod shown in FIG. 23 (A) after setting the ink tank. FIG. 25 is a perspective view of the ink adjustment rod shown in FIG. 23 (A). FIG. 26 is a partially cutaway diagram showing an ink cartridge. FIGS. 27 and 28 are partially cutaway diagrams of a second embodiment of an ink cartridge type writing instrument using a ball point pen. FIG. 28 (B) is a partially cutaway view of the cartridge, and FIG. 29 is a sectional view of the ink absorber of the writing instrument shown in FIGS. 26, 27, and 28 (A). Fig. 30 is a vertical cross-sectional perspective view of the second embodiment of the narrow rod 3. Fig. 31 is a perspective view of the third embodiment of the narrow rod 3. 1 4 small hole 7 ball receiving part 11 relay core and above 2nd figure 3 concave +2 [D 7 13th curse procedure amendment (method) 1 Indication of the case Showa 5841: Pre-patent No. 213050 Jiii-2 Name of the invention Ballpoint pen 3 ? Relationship with the Case of Person Who Makes ITI Corrections Patent Applicant February 1980 280 5 Ne 41 Contents of Amendment in Column 6 of “Brief Description of Drawings” of Subject Specification (1) Page 38 of Specification In line 13, 1, Figure 28 is corrected to ``Figure 28 (・a) is''. that's all

Claims (1)

[Scope of Claims] (1) It has a short cylindrical part which has a large number of capillary-like ink circulation holes therein from one end to the other end, and extends from one end, and has a periphery of the tip of the short cylindrical part. A thin metal rod having an annular narrowed portion; rotatably fitted and held inside the annular narrowed portion and the short tube portion, and in contact with one end of the thin metal rod located within the short tube portion; A writing instrument with a ball-point pen, which comprises a hard ball, and a means for guiding water-based ink connected to the other end of the thin metal rod. (2. A writing instrument with a ball point pen according to claim 1, characterized in that the ink flow holes are parallel to the axial direction within the narrow rod. ( 3) In the writing instrument with a ball point pen according to claim 1 or 2, the narrow rod has an enlarged head at one end thereof, and the short tube portion is formed at the tip of the enlarged head. (4) In the writing instrument with a ball point pen according to any one of claims 1 to 3, one end of the thin tube within the short cylinder portion forms a concave surface. (5) A thin tube whose front end is annularly constricted to form an opening, and a short hollow cylindrical portion at the front end of the thin tube, A narrow rod is tightly inserted into the capillary tube, and the narrow rod has a large number of capillary-like ink flow holes therein from one end to the other end, and one end of the narrow rod and the opening A writing instrument with a ball point pen, comprising: a ball rotatably supported within the short cylindrical portion between the ball and the annular constriction around the cylindrical portion; and water-based ink guiding means connected to the other end of the narrow rod. 6) A writing instrument with a ball point pen according to claim 5, characterized in that the ink flow holes are parallel to the axial direction within the narrow rod. (7) Patent A writing instrument with a ball-point pen according to claim 5, characterized in that one end of a narrow rod for supporting a ball is a flat surface. (8) Claim In the writing instrument with a ball point pen according to any one of the ranges 5 to 7, the capillary is
A writing instrument with a ball point pen, characterized in that it has a small hole in its middle part, and the narrow rod is fixed to the thin tube by adhesive injected through the small hole. (9) A writing instrument with a ball point pen according to claim 5, characterized in that one end of a thin rod for supporting a ball is concave. (10) A ball point pen according to claim 5 (a writing instrument with a ball point pen, characterized in that one end of a narrow rod for supporting a ball is pointed). The writing instrument with a ball point pen according to scope 5, wherein the thin tube has an enlarged head at one end, and the short tube part is formed at the tip of the enlarged head. (12. In the writing instrument with a ball point pen according to claim 5, a step is formed at the inner bottom of the short barrel, and the narrow rod has a flange at its tip, and this flange is connected to the step. (13) In the writing instrument with a ball point pen according to claim 5, one end of the thin rod for supporting the ball is located at the center thereof. (14) In the writing instrument with a ball point pen according to claim 5, one end of the thin tube for supporting the ball has a central part of the writing instrument with a ball point pen. A writing instrument with a ball point pen characterized by having an arc-shaped recess. (15) A front end narrowed into an annular shape to form an opening;
A thin tube consisting of a small diameter tip portion continuing to the front end, a truncated conical portion continuing to the small diameter tip portion, and a large diameter cylindrical portion continuing to the truncated conical portion, and a truncated conical head portion at the tip; A hollow pen nib holder consisting of a guide tube portion continuing to the head, and the capillary tube having a large diameter cylindrical portion tightly inserted into the nib holder, and a small diameter tip portion of the capillary tube. a ball that is rotatably supported between the annular constriction forming the main opening, the front end of the thin rod, the truncated conical portion of the thin tube, and the large diameter A writing instrument with a ball point pen comprising a cylindrical part and a water-based ink guiding means tightly inserted into the guide tube part of the nib holder and connected to the inner αIAI of the narrow rod. (16) Ball point l according to claim 15
In the writing instrument with a pen, the holder has a protrusion on the inner wall of its intermediate portion, the thin tube is inserted into the pen light holder at its large diameter cylindrical portion, and the rear end of the thin tube is in contact with the protrusion. A writing device with a ballpoint pen, which is characterized by its close contact. (17) The writing instrument with a ball point pen according to claim 15 is characterized in that the thin tube is inserted into the pen light body holder, and its rear end extends outside the pen light body holder. A writing instrument with a ball point pen. (18) A writing instrument with a ballpoint pen according to claim 15, characterized by having a ballpoint pen. (19) A writing instrument with a ball point pen according to claim 17. (20) a front end that is annularly constricted to form one opening; a small-diameter tip portion that continues to the above-mentioned tip; a truncated conical portion that continues to the small-diameter tip; and a large-diameter portion that continues to the truncated conical portion; a hollow pen nib holder comprising a cylindrical portion, a thin tube consisting of a cylindrical portion, a truncated conical 110 portion at the tip, and a guide tube portion continuing to the head; The narrow rod is tightly inserted into the holder, and the thin rod is tightly inserted into the small diameter tip of the capillary tube, and the narrow rod has a large number of capillary ink flows therein from one end to the other. a ball rotatably supported between the annular constriction forming the opening and the front end of the thin rod; a truncated conical portion of the thin tube; and a large diameter cylinder. a water-based ink guide means tightly inserted into the guide tube part of the pen light body boulder and connected to the inner end of the narrow rod; a roughly cylindrical part; a cylindrical portion having a longitudinal notch following the small diameter portion; a flange having a flange at the distal end of the generally cylindrical portion; and a flange formed longitudinally outside the generally cylindrical portion; an intermediate holder comprising a groove; a tip of the groove in the intermediate holder extends radially outward along an inner surface of the flange;
The nib holder is tightly inserted into a cylindrical part of the intermediate holder, and the intermediate holder is inserted into a generally cylindrical body, and the body has a front part and a rear part. The front part is made up of a small-diameter conical cylindrical part at the tip, a large-diameter cylindrical part following this, and a small-diameter cylindrical part following this, and the above-mentioned small diameter The cylindrical portion has a thread on its outer periphery, and the large diameter cylindrical portion has a number of high protrusions in the longitudinal direction on the inner circumferential surface of the front part thereof, and is arranged between these high protrusions. and an ink absorbing body housed inside the large-diameter cylindrical portion and the slightly small-diameter cylindrical portion; The rear end portion of the ink absorber is supported on the inner surface of the strip and extends outward from the rear end of the front part of the body, and the rear part of the body has a substantially cylindrical shape and the front end thereof A writing instrument with a ball point pen, which has a bottom that is open and a rear end is closed, and has a female thread on the inner circumferential surface of the front part of the rear part that can be engaged with the male thread.