JP2548496Y2 - Tail plug for writing implements - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument having a built-in ink storage in a barrel, a detachable tail plug, and refillable ink.

[0002]

2. Description of the Related Art Conventionally, a writing instrument of this type can replenish ink at a tail plug portion or at a pen core side when blurring occurs during writing. Such a device is disclosed in, for example, (A) Japanese Utility Model Laid-Open No. 50-18331 (B) Japanese Utility Model Laid-Open No. 51-45425.
No. (C) No. 51-149231 (D) No. 53
No. 129444. However, in (a), a rubber part is provided at the rear end of the writing instrument, and a hard and sharp object such as a syringe penetrates the rubber part and replenishes the ink impregnated body.
Not only cannot ink be replenished immediately and easily, but it is inconvenient unless there is a syringe or the like.

In (b), an ink replenisher is fixed to the rear end of the writing instrument by a screw to replenish the ink in the ink occluding body. In this case, ink cannot be easily replenished by any ink replenisher, and no consideration is given to airtightness. In (c), the tail plug and the ink occluding body are integrated, and when refilling the ink, the ink is immersed in the ink container and the ink is replenished by the penetrating power of the ink occluding body. In this case, the ink occluding body is dirty and cannot be replenished immediately. Finally, (d)
Is to refill ink from the pen core.
There are similar inconveniences.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a refillable writing instrument having an ink occluding body, which is capable of refilling ink immediately, easily, and without soiling the hand when blurring occurs during writing. The purpose is to be able to do.

[0005]

Means for Solving the Problems The ink cylinder 2 is mounted on the barrel 3.
In a refillable writing instrument having a detachable tail plug fitted to the rear end of the barrel, an air flow passage that is fitted and fixed to the rear end of the barrel 3 and fixes the ink occluding body 2. 6, a fixing member 1 having a holding portion 5 formed with a concave portion 12 provided therein and a guiding piece 8 provided on an inner surface near an opening end 7; and a detachably fitted to the fixing member 1.
A protrusion 11 is provided on the outer surface of the end so as to be detachably and air-tightly fitted to the recess 12, and the protrusion 11 and the recess 1 are provided at the other end.
2 is provided with a corrugated stepped portion 18 which engages with the guiding piece 8 when the fitting is airtightly fitted, and releases the airtight fitting between the convex portion 11 and the concave portion 12 by contacting and guiding the guiding piece 8. A tail plug for a writing instrument, comprising a plug portion 10.

[0006]

The fixing member 1 and the plug portion 10 of the tail plug are hermetically fitted and held by the concave portion 12 and the convex portion 11, respectively. At this time, the guiding piece 8 of the fixing member 1 and the corrugated step 18 of the plug 10 are engaged with each other as shown in FIG. Next, when refilling the ink,
When the notch 14 of the plug is rotated left or right with a coin or a claw, the guiding piece 8 of the fixing member 1 moves the plug 10 itself upward along the shape of the wavy step 18 of the plug 10. Push it. Then, the concave portion 12 of the fixing member 1 and the convex portion 1 of the plug portion 10 are formed.
1, the airtight fitting of the fixing member 1 and the plug 10 is released. The plug 10 pushed upward can be easily pinched with a finger, and ink can be easily replenished from the replenishing port of the fixing member 1. Further, when the plug 10 is fitted to the fixing member 1, the guiding piece 8 is
To fit in the bottom 15. At this time, the convex portion 11 is securely and hermetically fitted to the concave portion 12, and the fixing member 1 and the plug portion 10 are hermetically fitted and held.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments will be described in detail with reference to FIGS. 1, 2 and 4 show a first embodiment. Reference numeral 1 denotes a fixing member, which is fitted and fixed to a rear end of a shaft cylinder 3 provided with an ink occluding body 2 impregnated with ink. The fixing member 1 has a cylindrical shape, and a flange 4 that abuts on the rear end of the barrel 3 is stretched near the outer surface of the opening end 7, and a holding portion 5 that abuts and holds the ink occluding body 2 is provided on the other end. It is. The holding portion 5 has two or more airflow passages 6.
Is provided. Further, a stopper 1 is provided on the inner surface of the fixing member 1.
There are provided two or more guide pieces 8 for climbing up at 0 and for fitting at the time of fitting, and a converging end 9. The converging end portion 9 is provided with a concave portion 12 which is fitted in an airtight manner with the convex portion 11 of the plug portion 10 and is detachable. The convex portion 11 and the concave portion 12 are both ring-shaped, and can maintain airtightness.

Next, the stopper 10 is provided with a corrugated step 18 all around the outer surface, a notch 14 is provided on the top surface for rotating the stopper when ink is refilled, and near the other end, A convex portion 11 is provided which is detachably and air-tightly fitted to the concave portion 12 of the fixing member 1. The fixing member 1 and the plug 10 are made of a thermosetting resin (Ulya,
Phenol, melamine resin, etc.) or thermoplastic resin (polyethylene, polypropylene, polyester, vinyl chloride, etc.). At the time of refilling the ink, use a coin or a plug that can be inserted into
Rotate 0 right or left. Then, the guide piece 8 contained in the bottom 15 of the wavy step 18 before the rotation is rotated and guided along the waveform of the wavy step 18 to be brought into contact with the guide piece 8, and the guide piece 8 is moved to the tip of the wave tooth. The protruding portion 11 and the concave portion 12 are released by the time the vehicle passes over the plug 16, and the plug portion 10 rises.

At this time, the wave height h of the wavy step 18 is
This is a value larger than the distance s at which the airtightness between 1 and the concave portion 12 is released. (H> s) Next, when the ink is dropped from the opening end 7 with the ink replenishing bottle, the basic inner surface is inclined so as to converge. It is replenished at the center and does not cause ink stains on hands. And after refilling the ink,
When the plug portion 10 is inserted into the fixing member 1 and the plug portion 10 is turned to the left or right, the guiding piece 8 goes over the corrugated teeth of the corrugated step portion 18 and fits in the bottom portion 15. The fixing member 1 and the plug 10 are hermetically fitted and held.

FIGS. 3 and 5 show a second embodiment. The guide piece 8 ′ of the fixing member 1 is a step having the same waveform as the corrugated step 18 ′ of the plug 10. The fixing member 1 and the stopper 10 are
FIG. 5 shows a state in which the airtight fitting is performed, and the waveforms of the airtightly fit each other. Here, in the second embodiment, the waveform of the wave-shaped step portion 18 'is a saw-like sharp triangle. At the time of refilling the ink, when the stopper 10 is rotated in the same manner as in the first embodiment, the stoppers 10 are guided by the mutually-corrugated waveforms.
Rises and can be easily taken out. After replenishment, the protruding portion 11 and the recessed portion 1 are reciprocated while their waveforms are mutually opposed.
2 are hermetically fitted.

[0011]

With the above construction, airtightness can be released only by rotating the stopper 10, ink can be replenished immediately and easily without soiling the hands, and after replenishment, the stopper 10 is fixed again. Even if it is fitted to the first, airtight fitting for preventing evaporation of the ink can be reliably performed.

[0012]

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a first embodiment of the present invention.

FIG. 2 is an overall view of the first embodiment of the present invention.

FIG. 3 is an overall view of a second embodiment of the present invention.

FIG. 4 is a detailed view of the kami mating of the first embodiment.

FIG. 5 is a detailed view of the kami mating of the second embodiment.

FIG. 6 is a detailed view of the first and second hermetic parts.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixed member 2 Ink occlusion body 3 Shaft cylinder 4 Flange 5 Holding part 6 Air flow path 7 Open end 8.8 ′ Guidance piece 9 Convergent end part 10 Plug part 11 Convex part 12 Concave part 14 Notch part 15 Bottom part 16 18 'corrugated step

Claims (1)

(57) [Scope of request for utility model registration] [Claim 1] A shaft tube 3 incorporates an ink occlusion body 2, in freely breechblock possible ink replenishment was fitted to the writing instrument removably attached to barrel rear end, fitted and fixed to the rear end of the shaft tube 3 It is to secure the ink occlusion body 2, a recess 12 is provided on its inner side provided with a holding portion 5 forming the air flow passage 6, and the fixing member 1 further comprising a guide strip 8 is provided in the vicinity of the inner surface open end 7 ,
A convex portion 11 which is detachably fitted to the fixing member 1 and which is detachably and air-tightly fitted to the concave portion 12 is provided on an outer surface of an end portion.
At the same time, at the other end, the convex portion 11 and the concave portion 12 are fitted in an airtight manner .
When the guide piece 8 is in contact with the
Airtight fit between the convex portion 11 and the concave portion 12 by contact
A tail plug for a writing instrument, comprising: a plug portion 10 provided with a wavy step portion 18 for releasing the engagement .