JP2003127580A - Oil-based ball-point pen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-based ball-point pen, the writable handwriting distance with one of which is long, consequently the necessity for preparing a plurality of which is less and the problem of waste disposal of which is less. SOLUTION: In the oil-based ball-point pen, within the barrel 1 of which a ball-point pen refill 2 is housed and through the tip opening 14 of the barrel of which a ball-point pen body 22 at the tip of the ball-point pen refill is projected, spare ball-point pen refills 2S are built within the barrel. Further, to the tail end opening of the barrel, a holding member 3 is detachable fixed. Furthermore, the tail end parts of the ball-point pen refill and of the spare ball-point pen refills are detachably fixed to the holding member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a popular oil-based ballpoint pen used for office work and the like.

[0002]

2. Description of the Related Art A popular oil-based ballpoint pen used for office work has a ballpoint pen refill housed in a barrel formed of synthetic resin. The ink cylinder of the ball-point pen refill is formed by cutting a thin synthetic resin pipe into a predetermined length and is filled with oil-based ink. A ballpoint pen body that holds a ball rotatably is connected to the tip of the ink cylinder. The ballpoint pen always projects from the tip end opening of the barrel to allow writing.

[0003]

The oil-based ballpoint pen consumes less ink per a predetermined handwriting length than the ink consumption of the water-based ballpoint pen, but since the oil-based ballpoint pen is made of a synthetic resin pipe with a thin ink cylinder, ink filling is performed. Since the amount is small, the writable handwriting length of one oil-based ballpoint pen is not very long.

For this reason, a writer (heavy user) who writes many characters and the like needs to prepare a plurality of oil-based ballpoint pens. When the ink of one oil-based ballpoint pen is consumed, the new oil-based ballpoint pen is used for writing, so that the amount of the oil-based ballpoint pen to be discarded is large and there are many problems in terms of waste disposal.

Therefore, the present invention provides an oil-based ballpoint pen that has a long handwriting distance of one oil-based ballpoint pen, less need to prepare a plurality of oil-based ballpoint pens, and less problems of waste disposal. To aim.

[0006]

In order to achieve the above object, a first aspect of the present invention is an oil-based ballpoint pen in which a ballpoint pen refill is housed in a barrel and a ballpoint pen body at the tip of the ballpoint refill projects from a tip opening of the barrel. , A spare ballpoint pen refill is built into the barrel.
Further, it is preferable that a holding member is detachably fixed to the tail end opening of the barrel, and the tail ends of the ballpoint pen refill and the spare ballpoint pen refill are detachably fixed to the holding member.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. In FIG. 1, a barrel 1 made of synthetic resin is a rear barrel 1 that is detachably connected.
1 and front shaft 12. The rear shaft 11 and the front shaft 12 may be integrally molded. An inner threaded portion 13 is formed at the tail end opening of the rear shaft 11. The tip of the front shaft 12 is a tapered tapered portion 15, and an opening 14 is formed at the tip of the tapered portion 15. A grip 16 made of a soft elastic body is attached to the outer peripheral surface of the front shaft 12.

The ink cylinder 21 of the ballpoint pen refill 2 is a thin synthetic resin pipe cut into a predetermined length and has flexibility. A ballpoint pen body 22 is connected to the tip of an ink cylinder 21 filled with oil-based ink,
The ball-point pen body 22 is formed of stainless steel in a bullet shape, and a ball made of cemented carbide is rotatably held in a ball house at the tip of the ball-pen body 22 with a part of the ball being exposed. The ball-point pen refill 2 and three spare ball-point pen refills 2S identical to the ball-point pen refill 2 are housed in the barrel 1.

As shown in FIG. 2, an outer threaded portion 33 is formed on the outer peripheral surface of the holding member 3, and the outer threaded portion 3 is screwed into the inner threaded portion 13 of the rear shaft 11 to hold it. Member 3
Is detachably fixed to the barrel 1. A flat portion 34 is formed on the top of the holding member 3, and the flat portion 34
By rotating the holding member 3 by contacting it, it can be easily screwed into the tail end opening of the barrel 1. A piercing bar 31 for holding the ball-point pen refill 2 is projected on the bottom surface of the holding member 3, and three insertion holes 32 for holding the spare ball-point pen refill 2S are formed. The piercing bar 31 and the three insertion holes 32 are formed at equal intervals on the same circumference. Therefore, the piercing rod 31 is deviated from the axial center.

The ballpoint pen refill 2 has an ink cylinder 21.
The piercing bar 31 is inserted and held in the tail end portion 21a of the ink, and the spare ballpoint pen refill 2S is attached to the ink cylinder 2
The tail end portion 21a of No. 1 is inserted and held in the insertion hole 32. Therefore, the position levels of the ballpoint pen body 22 of the ballpoint pen refill 2 and the ballpoint pen body 22S of the spare ballpoint pen refill 2S are different.

Then, the ballpoint pen refill 2 and the spare ballpoint pen refill 2S are inserted into the barrel 1 and the holding member 3 is screwed into the tail end opening of the barrel 1. At this time, the ball-point pen refill 2 is deviated from the axial center, but since the ink cylinder 21 has flexibility, the ball-point pen body 22 of the ball-point pen refill 2 advances along the inner surface of the tapered portion 15 to move the ball-point pen body 22. Only the protrusion protrudes from the opening 22 at the tip of the barrel 1 to enable writing. On the other hand, the ball-point pen body 22S of the spare ball-point pen refill 2S has a different position level from the ball-point pen body 22, so that both are immersed in the barrel 1.

When the ink of the ballpoint pen refill 2 is consumed, the holding member 3 is removed from the barrel 1, the ballpoint pen refill 2 is pierced from the stick 31, and one of the spare ballpoint pen refills 2S is inserted into the insertion hole 32.
Pull it out and insert it into the piercing stick 31,
The holding member 3 may be screwed onto the barrel 1. Therefore, it is possible to continue writing with the same ballpoint pen without replacing the ballpoint pen itself, and since only the ballpoint pen refill 2 is discarded, the problem of waste disposal can be alleviated.

[0013]

As described above, in the oil-based ballpoint pen in which the ballpoint pen refill is housed in the barrel and the ballpoint pen body at the tip of the ballpoint refill projects from the tip opening of the barrel, a spare ballpoint pen refill is built in the barrel. In addition, the holding member is detachably fixed to the tail end opening of the barrel, and the tail end of the ball-point pen refill and the ball-point pen refill is detachably fixed to this holding member so that it can be used as a spare in the barrel. Since the ball-point pen refill is incorporated, the writing distance of one oil-based ball-point pen is long, the need for preparing a plurality of oil-based ball-point pens is reduced, and the problem of waste disposal can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

2A is a vertical sectional view of a holding member, FIG. 2B is a bottom view, and FIG. 2C is a part of a side view.

[Explanation of symbols]

1-axis cylinder 11 Rear axle 12 front axis 13 Inner thread 14 openings 15 Tapered part 16 grip 2 Ballpoint pen refill 2S Spare ballpoint pen refill 21 ink cylinder 22 Ballpoint pen 3 holding member 31 Stab 32 insertion holes 33 External thread 34 Flat part

Claims (2)

[Claims] 1. An oil-based ballpoint pen in which a ballpoint pen refill is housed in a barrel and a ballpoint pen body at the tip of the ballpoint refill projects from a tip opening of the barrel, and a spare ballpoint pen refill is built in the barrel. An oil-based ballpoint pen characterized by. 2. A holding member is detachably fixed to a tail end opening of the shaft cylinder, and tail ends of the ball-point pen refill and a spare ball-point pen refill are detachably fixed to the holding member. The oil-based ballpoint pen according to claim 1.