JP2605801Y2 - Double-ended writing instrument - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-headed writing instrument with a detachable holder.

[0002]

2. Description of the Related Art Conventionally, a double-headed writing instrument (a writing instrument having a pen core at both ends of a main body) is conventionally provided with a separate pen core holder fitted at one end (the side having a larger opening) at both ends of the main body. The other end is converged, and the pen core is fitted and held at the open end of the pen core holder. Such a double-headed writing instrument has two pen cores in one ink occluder as compared to a normal writing instrument having one pen core, and has two pen nibs compared to the size of the ink occluder. Because of the pen core, ink consumption is fast and it is necessary to refill ink. Therefore, it is necessary to remove the pen core holder and the like, and to refill the occlusion body with ink. However, since the holder and the main body are always required to be fixed, the press-fitting engagement between the pen lead holder and the main body must be strengthened. Therefore, in order to remove such a pen lead holder, you must naturally pull it out with a strong force to clean your hands with the pen lead attached to the tip of the pen lead holder, damage the pen lead itself, or remove the pen lead holder I had to prepare the parts.

[0003]

SUMMARY OF THE INVENTION Therefore, the present invention relates to a writing instrument having a pen core at each end of a main body.
It is an object of the present invention to make it possible to attach and detach a separate pen core holder to easily refill ink without soiling hands and damaging the pen core.

[0004]

A pen core holder 2 is detachably fitted to one of the two open ends of the main body 1, and a pen is inserted between the open end of the pen core holder 2 and the other open end of the main body 1. holding the wick 10, in each of the double ended writing instrument open end so as cover the pen core 10 is fitted detachably to the cap 3 deformable, a groove 7 provided on the outer circumference of the pen core holder 2, the pen core Cap 3 that covers holder 2
A convex portion 8 is provided inside the cap 3B facing A.
Cap 3 covered on the other side of pen lead holder 2
B is covered on the pen core holder 2 and the cap 3
The protrusion 8 of B and the groove 7 of the pen lead holder 2 are detachably fitted.
On the side of the open end of the cap 3B.
And the pen head holder 2 is made detachable .

[0005]

A pen-shaped holder 7 is provided with a ring-shaped groove 7 at the tip of a detachable holder which is fitted and fixed at all times, and a cap 3B which is covered on the opposite side of the pen-core holder 2. Is removed, and fitted to the pen lead holder 2. Then, the ring-shaped convex portion 8 provided on the inner wall surface of the cap 3B and the groove 7 provided on the pen core holder 2 are detachably fitted. Therefore, when a pinching force is applied to the side surface of the open end of the cap and the cap is lifted upward, the cap 3B and the pen core holder 2 are fitted more strongly than the main body 1 and the pen core holder 2 are fitted. The pen core holder 2 is pulled up while being fitted.
In this way, the fitting between the main body 1 and the pen core holder 2 is released, and the ink occluding body is exposed from the opening end of the main body, so that the ink can be supplied. After refilling the ink, the fitted cap 3B and the pen core holder 2 are again inserted into the large opening end of the main body.
The large opening end of the main body and the pen core holder 2 are fitted to each other, and when the cap 3B is pulled upward without applying a clamping force to the cap 3B, the cap 3B is separated from the pen core holder 2 and the pen core holder 2 and the main body 1 are fitted. You. With this, the ink replenishment is completed, and writing can be performed again.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to FIGS. Reference numeral 1 denotes a main body, both ends of which are large and small open ends, and a separate pen core holder 2 holding a pen core 10 is fitted to one open end. The other open end of the main body 1 directly holds the pen core 10. Inside the main body 1, an ink occluding body impregnated with ink is installed.
The rear ends of the two pen cores come into contact with each other to
The transition to is possible. A groove 7 is provided on the outer peripheral surface of the pen core holder-2. Reference numeral 3 denotes two types of caps. A large cap is 3A, and a small cap is 3A.
B. The cap 3A is a separate pen lead holder 2.
The band 5 of the main body 1 is fitted to the main body 2 so as to cover the
And keeps her tight. At this time, the groove 7 and the cap 3A are neither in contact nor fitted. The cap 3B covers and covers the convergent portion 6 of the main body 1 on the opposite side to which the separate pen core holder 2 is fitted, and is fitted and fitted to the main body 1 at the tip end in an airtight manner. Occasionally, the cap 3B is provided with a ring-shaped protrusion 8 inside the vicinity of the opening end. Further, when the cap 3B is fitted on the converging portion 6 of the main body 1, the convex portion 8 functions as a steady rest of the cap. In the method of refilling ink, the cap 3A is removed from the main body 1 and the cap 3B is also removed from the main body 1. Next, the cap 3B is fitted on the side where the cap 3A was attached. Then, the protrusion 8 and the groove 7 provided on the outer peripheral surface of the pen lead holder 2 are fitted. Further, when a pinching force is applied to the open end of the cap 3B with a finger or the like, the cap 3B is deformable, so that the open end of the cap 3B is deformed into an ellipse, and the fitting force of the short diameter portion increases.

In this state, when the cap 3B is pulled up along the axis of the writing instrument, the pen core holder 2 comes off together with the cap 3B. When the pen core holder 2 comes off, the ink occluding body faces the large opening end of the main body. Finally, in a state where the cap 3B and the pen core holder 2 are fitted, the cap 3B is inserted into the original large opening end of the main body 1 and fitted. Here, regarding the relationship of the fitting force, when the cap 3B is pulled out without applying a pinching force to the opening end side surface of the cap 3B, the fitting force between the pen core holder 2 and the main body 1 is larger than the fitting force between the cap 3B and the pen core holder 2. Has a stronger fitting force, so the cap 3
B can be disengaged from the pen lead holder 2. Thus,
Complete ink replenishment. Further, since the cap 3B is deformable, the strength of the fitting force between the cap 3B and the pen core holder 2 can be controlled, so that the pen core holder 2, the main body 1 and the cap 3B can be easily attached and detached. Regarding the material, the cap 3A, the cap 3B, and the pen core holder 2 are thermosetting or thermoplastic resin. In particular, the cap 3B is preferably a soft one that can be deformed by a pinching force on the side surface.

[0008]

[Effect] With the above configuration, the following effects are obtained. Since the double-headed writing instrument has to fit the cap 3 on both pen cores 10, using the cap 3B,
If you attach and detach the pen core holder 2 and refill the ink,
Parts can also be used, without the need for additional detachable members,
It is cheap. The cap 3B is provided with the protrusion 8 and is fitted to the pen lead holder 2 and fitted into the groove 7, so that the hand is not stained and the pen lead 10 is not damaged.

[0009]

[Brief description of the drawings]

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

FIG. 2 is an overall view of the embodiment of the present invention with the cap 3 removed.

FIG. 3 is a sectional view of the cap 3B according to the embodiment of the present invention.

[0010]

[Explanation of symbols]

 1: body 2: pen core holder 3: cap 4: stepped portion 5: band portion 6: converging portion 7: groove 8: convex portion 10: pen core

Claims (1)

(57) [Scope of request for utility model registration] 1. A pen core holder 2 is detachably fitted to one open end of both end openings of a main body 1, and a pen core 10 is held at the open end of the pen core holder 2 and the other open end of the main body 1. and, in each of the double ended writing instrument open end so as cover the pen core 10 is fitted detachably to the cap 3 deformable, a groove 7 provided on the outer circumference of the pen core holder 2, Bae
Key that is opposite to the cap 3A that covers the core holder 2 side
A projection 8 is provided inside the cap 3B, and the pen lead holder is provided.
The cap 3B covering the other side of the pen 2
When the holder 2 is covered, the projection 8 of the cap 3B
The groove 7 of the core holder 2 is detachably fitted, and
By applying a pinching force to the side surface of the opening end of the cap 3B,
A double-headed writing implement characterized in that the core holder 2 is detachable .