JP2002036786A - Writing utensil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent such a trouble that a hand or the like is stained when changing an ink tank (10), while enhancing multifunction and easy handling with a direct liquid feed type pen. SOLUTION: A penpoint unit (14) in which penpoints (1) (4), a penpoint holder (2) and an ink tank (10) are fixed is installed in both end sides of a cylindrical barrel (15) in a freely detachable manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a direct liquid writing instrument such as a marking pen.

[0002]

Conventionally, in a direct liquid type marking pen using an aqueous pigment as an ink,
One end of the hollow cylinder shaft that forms the pen body is closed, and the pen tip holder is inserted into the other end of the cylinder shaft to fix the pen tip, and ink is placed in the hollow of the cylinder shaft. There are problems in manufacturing cost and handling such that two different nibs or two nibs with different colors cannot be mounted on one cylindrical shaft. In addition, when the pen tip holder that provides the pen tip is detachably fixed to the cylinder shaft, and the ink tank that is exchangeably attached to the pen tip holder is inserted into the cylinder shaft, when the ink tank is empty, empty ink It is necessary to remove the tank from the nib holder and attach the ink tank containing the ink to the nib holder, and there is a handling problem such as a dirty hand when exchanging the ink tank. In addition, since the ink consumption is different for nibs of different thicknesses, forming the ink tank to the required capacity for a thick nib will cause the ink tank capacity to become There is a problem that ink remains even if it gets dirty or damaged.In addition, by forming an ink tank with a capacity suitable for a thin nib, the capacity of the ink tank becomes too small for a thick nib. Insufficient ink runs out before damage. In addition, the inner cap is provided inside the cap to be fitted to the pen tip holder, and the pen tip is sealed in the inner cap to prevent evaporation of the ink, so that it is not easy to simplify the cap structure and reduce the manufacturing cost. There are problems such as.

[0003]

According to the present invention, a pen point unit having a direct liquid structure in which a pen point, a pen point holder and an ink tank are fixed is detachably attached to both ends of a cylindrical shaft. Two different nibs of different colors or two different colored nibs can be easily attached to a single cylinder shaft, making it easy to achieve multifunctionality and improved handling of a single pen with a direct liquid structure. Further, the combination of the size and the color of the pen tip can be easily changed by exchanging the pen tip unit, and troubles such as stains on the hands and the like when replacing the ink tank can be easily eliminated.

Further, in a writing instrument in which a pen tip provided inside a detachable cap is attached to an end of a cylinder shaft, a pen tip holder for fixing the pen tip is inserted and fixed in an ink tank, and the ink tank is fixed to the cylinder shaft. The pen tip, pen tip holder and ink tank can be formed in a unit structure by inserting and fixing detachably, and it is possible to easily configure spare ink replacement parts or pen tip replacement parts of different colors, etc. The pen tip is integrally fixed to the tank so that the handleability such as ink tank replacement can be easily improved.

Further, a thick pen tip and a thin pen tip are attached to both ends of a cylinder shaft, and the ink tank on the thick pen tip side is formed longer than the ink tank on the thin pen tip side. An ink tank with a capacity suitable for thickness or durability can be easily obtained, and the ink tank capacity can be changed only by making the shape of engagement with the pen tip holder or cylinder shaft almost the same and making the length of the ink storage section different. In addition, the cylindrical shaft can be easily formed to a length that is easy to use, and problems such as running out of ink before the pen tip is damaged or ink remaining even when the pen tip is damaged can be easily eliminated. .

In addition, a pen tip cover which is detachably fitted to the pen tip holder to enclose the pen tip is inserted into the cap, and a projection on the inner surface of the cap and a projection on the outer surface of the pen tip cover are formed to be freely engageable. When the pen tip, the pen tip holder and the ink tank are integrally fixed, the pen tip is sealed in the pen tip cover to prevent the evaporation of the ink, and can be transported and stored between the manufacturing site and the store. When the cap is removed and used, it can be opened and closed so as to leave the nib cover inside the cap, and the cap and the nib cover can be separately formed to easily simplify the cap structure and reduce the manufacturing cost. Things.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an overall appearance view, FIGS. 2 to 5 are exploded explanatory views thereof, FIG. 6 is an overall sectional view, FIGS. 7 and 8 are partially enlarged views of the previous figure, and FIGS. 9 to 11 are exploded explanatory views thereof. The base of the thick nib (1) is inserted and fixed in the nib holder (2), and the thin pen is inserted into the nib holder (2) having the same shape as that of the thick nib (1) via the spacer (3). The tip (4) is inserted and fixed, and a cylindrical cover seat (6) is fitted to the outside of the cylindrical tip support portion (5) of the tip holder (2). The pen point cover (7) to be enclosed is detachably fitted to the outside of one end of the cover seat (6).

Further, the ink tank (1) forming the bag-shaped ink storage portions (8) and (9) having the same outer diameter and different lengths.
0), the ink formed of the aqueous pigment is charged, the pen tip holder (2) is inserted into one end opening of the ink tank (10), and the one end opening of the ink tank (10) is fitted to the cover seat (6). Fin forming part (11) of pen tip holder (2)
And a cylindrical portion (12) of the ink tank (10) constitute a bellows-shaped liquid reservoir (13), and the pen tip (1) (4), the pen tip holder (2) and the ink tank (10) are integrated. To form a pen tip unit (14) having a direct liquid structure. In addition, the ink container (9) of the ink tank (10) to be fixed to the thin nib (4) is formed short to reduce the ink capacity, and the ink in the ink tank (10) to be fixed to the thick nib (1). The ink container (10) is formed to have substantially the same shape and dimensions except for the length of the ink storage portions (8) and (9). A pen point holder (2) and a cover seat (6) having the same shape and size are attached to the tank (10).

Further, a cylindrical shaft (15) is provided, and the ink storage portions (8) and (9) of the ink tank (10) are inserted into the end opening of the cylindrical shaft (15) so as to be able to freely enter and exit. The annular step (16) on the outer periphery of the tank (10) is detachably engaged with the ring groove (17) on the inner periphery of the cylinder shaft (15), and the ink tank (10) and the cylinder shaft (15) are detachably attached. The bottom of the long ink storage section (8) and the short ink storage section (9) to be connected and inserted from both side openings of the cylindrical shaft (15) are brought close to each other,
The cylinder shaft (15) is formed to have a length obtained by adding the lengths of the respective ink storage portions (8) and (9).

Further, a cap (20) for fitting a clip (18) or a color band (19) to the outside of the head is provided, an external communication opening (21) is formed in the head of the cap (20), and a pen tip is formed. With the cover (7) fitted, the nib holder (2) and the cylindrical portion (12) of the ink tank (10) are inserted into the cap (20), and the ring-shaped projection (22) of the cylindrical portion (12) is capped. (20) The opening is detachably fitted, the cap (20) is detachably fixed to the ink tank (10), the pen tip (1) and the pen tip cover (7).
Is stored in the cap (20), and a plurality of ridge-shaped projections (23) on the outer periphery of the pen tip cover (7) and the cap (2).
0) The ring-shaped projection (24) on the inner surface is formed so as to be freely engageable, and the pen tip cover (7) is inserted into the cap (20) with the pen tip cover (7) loosely fitted to the cover seat (6). ) Is removed, the pen tip cover (7) also comes off the cover seat (6) by the engagement of the projections (23) and (24),
The pen tip cover (7) remains inside the removed cap (20), and the pen tips (1) and (4) are exposed. Also, by inserting the nibs (1) and (4) into the cap (20),
When the nib cover (7) and the cover seat (6) are fitted together and an impact is applied to the removed cap (20), the loosely engaged projections (23) and (24) are detached,
The pen tip cover (7) escapes from the cap (20).

As is apparent from the above, the pen tip (1)
(4) The pen tip unit (14) having a direct liquid structure in which the pen tip holder (2) and the ink tank (10) are fixed is mounted on the cylinder shaft (1).
5) Removably attached to both ends, two nibs (1) and (4) with different thicknesses or two nibs (1) and (4) with different colors are attached to one cylindrical shaft (15). Attach to improve the versatility and handleability of a single pen with a direct liquid structure, and change the combination of pen tips (1) and (4) thickness and color by replacing the pen tip unit (14). The pen points (1) and (4) to be installed in the detachable cap (20) are attached to the end of the cylinder shaft (15). In the writing implement to be mounted, the pen tip holder (2) for fixing the pen tips (1) and (4) is inserted into the ink tank (10) and fixed, and the ink tank (10) is inserted into the cylinder shaft (15). Removably fix the pen tip (1) (4), pen tip holder (2) and ink The ink tank (10) is formed in a unit structure to constitute a spare ink replacement part or a pen tip replacement part of a different color, and the ink tips (1) and (4) are integrally fixed to the ink tank (10). Tank (1
0) Improve handling such as replacement.

A thick pen tip (1) and a thin pen tip (4) are attached to both ends of a cylinder shaft (15), and the ink tank (10) on the side of the thick pen tip (1) is attached to the thin pen tip (4). )
The ink tank (10) formed longer than the ink tank (10) on the side and having a capacity suitable for the thickness or durability of the nibs (1) and (4), and the nib holder (2) Alternatively, the capacity of the ink tank (10) can be changed simply by making the engagement shapes with the cylinder shaft (15) substantially the same and making the lengths of the ink storage portions (8) and (9) different, so that the cylinder shaft (15) is easy to use. It is formed to a length and eliminates problems such as running out of ink before the pen tips (1) and (4) are damaged and ink remaining even if the pen tips (1) and (4) are damaged. A pen tip cover (7) removably fitted to the holder (2) to enclose the pen tips (1) and (4) is inserted into the cap (20), and a projection (24) on the inner surface of the cap (20). And the projection (23) on the outer surface of the pen tip cover (7) are formed so as to be freely engageable with the pen tip (1). 4) When the nib holder (7) and the ink tank (10) are integrally fixed, the nibs (1) and (4) are sealed in the nib cover (7) to prevent evaporation of the ink and to manufacture Can be transported and stored between offices and stores, and when the cap (20) is removed and used,
It is opened and closed so as to leave the pen tip cover (7) inside the cap (20), and the cap (20) and the pen tip cover (7)
Are formed separately, thereby simplifying the structure of the cap (20) and reducing the manufacturing cost.

Further, the nibs (1) and (4), the cover seat (6), the clip (18), and the color band (19) are colored in the same color as the ink put in the ink tank (10). The tank (10), the pen tip cover (7), and the cap (20) are formed of a transparent synthetic resin molded product. In addition, a pen point holder (2), a cover seat (6),
The cylindrical shaft (15) and the cap (20) are made of a hard synthetic resin molded product that is hard to deform, and the pen tip cover (7)
The ink tank (10) is formed of a soft and flexible synthetic resin molded product. It should be noted that the cylindrical shaft (15) may be formed to be twice as long as the long ink storage portion (8) of the ink tank (10).

[0014]

As is clear from the above embodiments, the present invention provides a pen-tip unit (14) having a direct liquid structure to which the pen-tips (1) and (4), the pen-tip holder (2) and the ink tank (10) are fixed. ) Are detachably attached to both ends of the cylindrical shaft (15), and two nibs (1) and (4) having different thicknesses or two nibs (1) and (4) having different colors are connected to one another. One cylindrical shaft (1
5) It can be easily attached to the pen tip (1) by replacing the pen tip unit (14) with the multifunctionality of a single pen having a direct liquid structure and improving the handleability.
(4) The combination of thickness and color can be easily changed, and problems such as soiling of hands or the like when replacing the ink tank (10) can be easily eliminated.

Further, in a writing instrument for attaching a pen point (1) (4) provided inside a detachable cap (20) to an end of a cylindrical shaft (15), a pen point fixing the pen point (1) (4). The holder (2) is inserted into the ink tank (10) and fixed, and the ink tank (10) is inserted into the cylinder shaft (15) and fixed detachably. The pen tip (1)
(4) The pen tip holder (2) and the ink tank (10) can be formed in a unit structure, and spare ink replacement parts or pen tip replacement parts of different colors can be easily configured. (1) By fixing (4) integrally, it is possible to easily improve handleability such as replacement of the ink tank (10).

Also, a thick pen tip (1) and a thin pen tip (4) are attached to both ends of the cylindrical shaft (15), and the ink tank (10) on the side of the thick pen tip (1) is attached to the thin pen tip (4). )
The ink tank (10) is formed to be longer than the ink tank (10) on the side and has a capacity suitable for the thickness or durability of the pen tips (1) and (4), and The capacity of the ink tank (10) can be changed simply by making the shape of engagement with the pen tip holder (2) or the cylinder shaft (15) substantially the same and changing the length of the ink storage portions (8) and (9). (15) can be easily formed to a length that is easy to use, and the ink may run out before the pen tips (1) and (4) are damaged, or ink may remain even if the pen tips (1) and (4) are damaged. Can easily be eliminated.

A pen tip cover (7), which is detachably fitted to the pen tip holder (2) to enclose the pen tips (1) and (4), is inserted into the cap (20). ) The protrusions (24) on the inner surface and the protrusions (23) on the outer surface of the pen tip cover (7) are formed to be freely engageable. The pen tips (1) and (4), the pen tip holder (7), and the ink tank (1) are formed.
When (0) is integrally fixed, the nibs (1) and (4) are sealed in the nib cover (7) to prevent evaporation of the ink, and can be transported and stored between a manufacturing place and a store. When removing and using (20), cap (20)
The cap (20) can be opened and closed so as to leave the pen tip cover (7) inside, and the cap (20) and the pen tip cover (7) are separately formed to easily simplify the structure of the cap (20) and reduce the manufacturing cost. Is what you can do.

[Brief description of the drawings]

FIG. 1 is an overall external view.

FIG. 2 is an external view of a thick pen tip side.

FIG. 3 is an external view of a thin pen tip side.

FIG. 4 is an external view of a pen point unit.

FIG. 5 is an explanatory view of removing a pen tip cover of FIG. 4;

FIG. 6 is an overall sectional view.

FIG. 7 is a sectional view of a thick pen tip side.

FIG. 8 is a sectional view of a thin pen tip side.

FIG. 9 is an explanatory view of removing the cap of FIG. 7;

FIG. 10 is an explanatory view of removing the cap of FIG. 8;

FIG. 11 is an exploded view of each part.

[Explanation of symbols]

 (1) Thick nib (2) Nib holder (4) Thin nib (7) Nib cover (10) Ink tank (14) Nib unit (15) Tube shaft (20) Cap (23) Ridge Projection (24) Circular projection

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2C350 GA04 HA15 HC04 HC07 KA03 KA09 KC05 KC06 KC08 NA11 NA14 2C353 KA01 KA04 KA07 KA09 KA12 KA19 KA20

Claims (4)

[Claims] 1. A writing implement wherein a pen tip unit having a direct liquid structure in which a pen tip, a pen tip holder and an ink tank are fixed is detachably attached to both ends of a cylinder shaft. 2. A writing instrument in which a pen tip provided inside a detachable cap is attached to an end of a cylinder shaft, wherein a pen tip holder for fixing the pen tip is inserted and fixed in an ink tank, and the ink tank is fixed to the cylinder shaft. A writing implement characterized by being inserted and fixed detachably. 3. A writing implement wherein a thick pen tip and a thin pen tip are attached to both ends of a cylinder shaft, and the ink tank on the thick pen tip is formed longer than the ink tank on the thin pen tip. . 4. A pen tip cover which is detachably fitted to a pen tip holder to enclose the pen tip is inserted into the cap, and a projection on the inner surface of the cap and a projection on the outer surface of the pen tip cover are formed to be freely engageable. A writing implement characterized by the following.