JP2002326495A - Writing utensil with cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily set a writing utensil using a volatile ink in a writable state or an unusable state through a one hand manipulation and prevent an ink from evaporating to a maximum possible extent. SOLUTION: A sliding cap 4 with a lid plate 5 is fitted to the forward small diameter part 6 of a barrel 1 and the lid plate 5 is fixedly hinged 7, in a freely opening/closing manner, on the upper end of the sliding cap 4. The barrel 1 is gripped and the sliding cap 4 is slid back and forth by the tip of a forefinger. The pen point 3 forcibly opens the lid plate 5 by pulling the sliding cap 4 backward. The pen point 3 is completely way out and set in a usable state by further pulling the cap 4 backward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument cap using volatile ink for use in a white boat or the like, and more particularly to a writing instrument with a cap which can be easily attached and detached with one hand.

[0002]

2. Description of the Related Art Conventionally, when a writing instrument cap is removed, it is often left as it is, or attached to the rear end of a writing instrument. In order to take into account airtightness, the cap was strongly fitted to the writing instrument, and the one disclosed in Japanese Utility Model Laid-Open Publication No. 5-53990,
The cap is attached and detached with one hand.

[0003]

However, if the cap is left as described above, the cap may be lost, and the ink will evaporate, making it impossible to write. It is troublesome to attach the cap to the rear end of the writing body. When it is necessary to enter characters when one hand is covered with luggage or the like, it is difficult and inconvenient to remove the cap.

[0004] When writing on a white boat with a boat pen, if the cap is neglected and detached, ink often evaporates and writing becomes impossible, which is particularly troublesome.

[0005]

A writing instrument with a cap according to the present invention has solved the above-mentioned problems.
An opening / closing lid plate is provided at the end of the cap fitted to the small-diameter portion of the barrel, and the pen tip at the tip of the small-diameter portion is moved in and out of the cap by sliding the cap back and forth with a fingertip.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a writing instrument with a cap according to the present invention; FIG. The small-diameter portion 6 is connected to the tip of the barrel 1, and the tip 3 of the small-diameter portion 6 is provided with a pen tip 3.

A sliding cap 4 is fitted to the small diameter portion 6, and a lid plate 5 is attached to the upper end of the sliding cap 4 by a hinge 7 so as to be openable and closable. If used, hold the barrel 1 with your finger and slide the sliding cap 4 back and forth with your forefinger.
If the sliding cap 4 is pulled later, the pen tip 3 pushes the lid plate 5 open.

The sliding cap 4 is pushed forward with a fingertip, and when the pen tip 3 is immersed in the sliding cap 4, the lid plate 5 is closed and becomes unused.

FIG. 2 is a cross-sectional view showing the state of the sliding cap 4 and the pen tip 3 when the writing instrument with a cap according to the present invention is in use. The lid plate 5 is pushed open and comes out to be ready for writing.

FIG. 3 is a sectional view showing the state of the sliding cap 4 and the tip 3 when the writing implement with a cap according to the present invention is not used. When the sliding cap 4 is pushed out with a fingertip, the pen tip 3 is moved. Enters, and the lid plate 5 is closed to prevent evaporation of the ink.

The sliding cap 4 and the cover plate 5 are connected by a hinge 7, but since a spring is inserted into the connection shaft, the cover plate 5 can be closed even if the cover plate 5 is upside down. Since the inner surface of the sliding cap 4 slides on the outer surface of the small-diameter portion 6, there is a slight gap, which is negligible for ink evaporation. However, since it is desirable to completely prevent the evaporation, the O-ring 2 is provided. Cover plate 5 that is airtight
When an elastic material such as a rubber plate is adhered to the inner surface of the device, the airtightness is further improved.

The apparatus of the present invention can prevent ink evaporation when not in use, but it is preferable to use a conventional cap when not in use for a long time, and to use the cap of the present invention only during the described time. The cap of the present invention is removable so that such cap replacement can be performed. The present invention is not limited to such embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

[0013]

According to the conventional writing instrument, it is impossible to attach or detach the cap with one hand. As described in detail above, the writing implement with a cap of the present invention can easily remove the cap with one hand during writing, so that it is possible to prevent evaporation of the ink as much as possible without trouble, and the present invention is simple. Because of the configuration, the invention is easy to manufacture, inexpensive, and very useful in practice.

[Brief description of the drawings]

FIG. 1 is a front view showing a writing instrument with a cap according to the present invention in use.

FIG. 2 is a cross-sectional view of a tip portion showing a state of using the writing instrument with a cap.

FIG. 3 is a cross-sectional view of a tip portion of the writing implement with a cap when not in use.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shaft cylinder 2 O-ring 3 Pen point 4 Sliding cap 5 Cover plate 6 Small diameter part 7 Hinge

Claims (2)

[Claims] 1. A small-diameter portion having a pen tip at a tip thereof is provided at a front portion of a barrel, and a sliding cap having a cover plate is slidably fitted on an outer periphery of the small-diameter portion. Writing instrument with cap. 2. The writing implement with a cap according to claim 1, wherein an O-ring is provided on an outer peripheral surface of the small diameter portion.