JPH0452071Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) This project concerns the improvement of ballpoint pens.

(Prior art and its problems) Conventional ballpoint pens that use water-based ink seal the pen tip with a cap to prevent ink leakage, but they have drawbacks such as forgetting to put the cap in and the trouble of attaching and detaching the cap. have

(Means for solving the problem) The present invention is designed to automatically seal the pen tip in a ballpoint pen using water-based ink when the pen tip is immersed in the base without putting a cap on the conventional ballpoint pen that uses water-based ink. This is to prevent leakage, drying, etc.

To describe the present invention in detail with reference to the illustrated embodiment, a ballpoint pen refill 3 containing water-based ink is loaded into a barrel 2 with a cap 1 screwed onto the tip, and the pen tip 3' of the ballpoint refill 3 is loaded. In the ballpoint pen 5, which can be freely drawn out and retracted from the center of the base 1 by an arbitrary feeding mechanism 4 such as a knocking type, a bending type, or a rotary type, there is a sealing ring at one end between the ballpoint pen refill 3 and the barrel 2. 6 is fixed to the inner wall of the shaft cylinder 2 by disposing a sealed iron envelope 8 having a magnet ring 7 on the other end, and the seal ring 6 is in close contact with the outer periphery of the ballpoint pen reel 3 so as to be able to freely slide. Ring 7 is the nib 3' of the ballpoint pen Reheal 3 when it is immersed.
A disk-shaped sealing plate 9 made of steel or the like is provided between the magnet ring 7 and the base 1 in a position surrounding or in front of the magnet ring 7, and is freely inverted. do.

A space 12 is provided between the iron sealed envelope 8 and the shaft tube 2 or the base 1 at the part where the magnet ring 7 is located, and the tip of the iron sealed envelope 8 is made to protrude slightly ahead of the tip position of the magnet ring 7. A portion 8' is formed to reduce magnetic leakage to the outside as much as possible. That is, the protrusion 8' induces magnetism, and together with the space, magnetic leakage to the outside is reduced as much as possible. Further, the outer edge of the sealing plate 9 is rounded so as to taper upward, so that it can easily fall toward the magnet ring 7 side. In addition, as shown in FIG.
If this is done, the sealing plate 9 will easily open in one direction when the ballpoint pen reheal 3 protrudes. Further, the tip end surface of the magnet ring 7 may be covered with a part of the iron sealed envelope 8 or other iron plate. In the figure, 11 is a spring, and 13 is a groove into which the edge falls when the sealing plate 9 is opened.

(Function) The present invention is realized as described above, and in order to use it, the nib 3' of the ballpoint pen reheal 3 protrudes from the center of the base 1 as shown in FIG. At this time, one end of the sealing plate 9 is magnetically attached to the magnet ring 7, and the other end is leaning against the ballpoint pen reheel 3. When the ballpoint pen reheal 3 is pulled into the base 1 by operating the feeding mechanism 4, the pen tip 3' is located in the middle of the magnet ring 7, and the other end of the sealing plate 9 is attracted to the magnet ring 7, and the pen tip 3' is located in the middle of the magnet ring 7. The center hole 7' is sealed.

(Effects) As mentioned above, the present invention is to load a sealed iron envelope with a seal ring at one end and a magnet ring at the other end between the ballpoint pen reheal and the barrel, and between the sealed iron envelope where the magnetic ring is located and the barrel. A space is provided between them, and a protrusion is provided so that the tip of the iron sealed envelope protrudes from the tip of the magnet ring. A sealing plate is provided at a position surrounding or in front of the tip of the pen when the pen is retracted, and between the magnet ring and the cap, it is provided with a sealing plate that is closely magnetically attached to the tip surface of the magnet ring and can be freely turned upside down. By simply inserting the ballpoint pen into the barrel, the sealing plate is automatically attracted to the tip of the magnetic ring, sealing the center hole 7' and sealing the pen tip inside the iron sealed envelope. Air circulation is blocked within the sealed envelope 8, eliminating ink leakage from the pen tip 3', and at the same time, the ink does not dry out and decrease, allowing smooth writing at all times. Also, since there is no capping, etc., handling is easy. In addition, the protrusion 8' induces magnetism, and together with the space, leakage of magnetism to the outside is minimized, and the magnetic card will not be damaged even if carried around with it. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the ballpoint pen of the present invention, and FIG. 2 is a sectional view of another embodiment. 1... Cap, 2... Barrel, 3... Ballpoint pen reheal, 4... Feeding mechanism, 5... Ballpoint pen, 6
...Sealing, 7...Magnetic ring, 8...Iron sealed envelope, 8'...Protrusion, 9...Sealing plate, 12...
...Space department.

Claims (1)

[Scope of utility model registration request] In a ballpoint pen in which a ballpoint pen reheal is loaded into a barrel having a base at the tip and the tip of the ballpoint pen reheal can be freely taken out and retracted from the center of the base by a feeding mechanism, a seal is provided at one end between the ballpoint pen reheel and the barrel. A sealed iron envelope with a ring and a magnet ring at the other end is loaded, a space is created between the sealed iron envelope where the magnet ring is located and the shaft cylinder, and the tip of the sealed iron envelope protrudes beyond the tip of the magnet ring. The sealing ring is slidably in close contact with the outer periphery of the ballpoint pen reheal, and the magnet ring is provided at a position surrounding or in front of the tip of the ballpoint reheal when the ballpoint pen reheal is retracted. A ballpoint pen with a sealing plate that is placed between the ring and the base and is attached closely to the tip of the magnetic ring so that it can be turned upside down.