JP3325647B2 - Writing implement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a quick-drying ink, and
The present invention relates to a writing instrument which uses a volatile ink to open and close a cap indirectly, and allows the pen tip to be completely sealed when the pen tip is stored by the cap.

[0002]

2. Description of the Related Art Conventionally, writing instruments using inks that are somewhat dry, such as volatile inks such as water-based inks and oil-based inks, have a cap or a cap to prevent drying of the pen core.
There is one in which a member called a cap is built in a writing barrel. Prior applications of this type include (a) Japanese Patent Application Laid-Open No. 58-52.
No. 99 (hereinafter (a)), (b) JP-A-59-15679
No. 8 (hereinafter (b)), (c) Japanese Utility Model Laid-Open No. 2-54987 (hereinafter (c)), and (d) Japanese Utility Model Application Laid-Open No. 2-58985 (hereinafter (2)). (A) is a cylindrical cap having one closed end, but the movement of the cylindrical cap depends on its own weight, so it is necessary to ensure that the cylindrical cap is attached to the pen tip when not in use and retracted when used. I have not done it.
In (b), a plate-shaped object such as a valve, or a fold-shaped object is pressed to bring a pen tip or the like into contact and pushed open, so that the pen tip of the writing portion is moved in and out. However, in this configuration, the pen tip stains valves and the like, so that airtightness cannot be ensured.
As a result, the pen tip of the writing section is damaged. (C)
(D) and (d) perform sealing by a valve, and the string is hung on the valve so that the valve always operates in a closing direction or an opening direction. In such a configuration, it is difficult to hang a string at the time of assembling, and because the valve and the like are slightly pushed open with a pen tip, the valve is soiled, and the dirt on the valve makes it impossible to maintain the airtightness. To scratch the pen tip.

[0003]

As described above, conventionally, a pen point pushes and opens a cap such as a valve, so that
There is a disadvantage that the pen tip is damaged, and furthermore, the pen tip and a cap such as a valve covering the pen tip become dirty. In addition, air-tightness is not a problem as long as the ink is an oil-based ballpoint pen.However, if volatile ink is used to some extent as desired in the present application, a valve or the like for maintaining air-tightness is stained, and the air-tightness of the pen tip cannot be maintained. There were drawbacks. Therefore, the present invention solves such a problem, and the pen tip is not damaged by the cap of the valve or the like that requires airtightness of the pen tip, and can reliably maintain airtightness.
It provides a writing instrument that is easy to assemble.

[0004]

A rotary body 22 for feeding out the cartridge 1 having a pen core at the tip is provided, and a pair of cartridge projections 2 are stretched at opposing positions on the rear surface of the cartridge 1. Has a guide groove 4
Is provided, and further, on the outer periphery thereof, a cap support tube 5 is provided which extends a pair of support tube protrusions 9 at positions opposed to the inner wall surface and holds the cap 11 at the distal end.
The guide groove 4 abuts and guides the cartridge projection 2 and the support cylinder projection 9, further has a hole 15 for accommodating the cap 11, and arranges an exterior body 14 covering and covering the whole.
The cap 11 is opened and closed by the rotation of the rotating body 22, and further,
In a writing instrument in which the cartridge 1 is also exposed from the tip of the exterior body 14 , a pair of shafts
And two support receivers on which the shaft 12 is provided.
One side of the piece 13 is a convex portion 16 and the convex portion 16 and the hole 15
The cap 11 comes into contact with the hook 17
15, a cartridge guide groove 4A for guiding a cartridge protrusion 2 provided on the cartridge 1.
Has a rear portion provided in a plane perpendicular to the axis, and a front portion thereof is provided in a spiral shape. In contrast, the cap guiding groove 4B has a rear portion provided in a spiral shape and guides the front portion. Cylinder 3
The cartridge guide groove 4A and the cap guide groove 4B are located on the same plane parallel to the axis. It is a writing instrument.

[0005]

The operation will be described based on the use of the writing instrument of the present invention. When the rotating body 22 is rotated left or right, the rotating body 2
Since the guide tube 2 and the guide tube 3 are engaged by a key, the guide tube 3 is rotated. Here, the guide groove 4 provided in the guide cylinder 3 includes a cartridge guide groove 4A and a cap guide groove 4B, and the cartridge protrusion 2 and the support tube protrusion 9 are guided in contact with the respective grooves. . In the state I, the cap 11 and the tip of the cartridge 1 are kept airtight to prevent the pen core from drying. FIG.
, The cartridge projection 2 and the support cylinder projection 9 are located at the rearmost ends of the corresponding cartridge guide groove 4A and cap guide groove 4B, respectively. The rearmost positions of the cartridge guide groove 4A and the cap guide groove 4B are on the same plane parallel to the axis of the guide cylinder 3. In the state I to the state II, the cartridge protrusion 2 moves in the cartridge guide groove 4A provided on a plane perpendicular to the axis. At the same time, the support cylinder projection 9 is
Move B. As a result, only the cap 11 and the cap support cylinder 5 move forward, and the airtight holding between the tip of the cartridge 1 and the cap 11 is released. Thereafter, the hook portion 17 provided inside the exterior body 14 and the convex portion 16 provided on the cap 11 abut against each other, and the cap 1 is moved toward the hole 15.
1 will lead to the tip.

Next, from the state II to the state III, the cartridge projection 2 moves together with the cartridge guiding groove 4A, and the support cylinder projection 9 moves along the spirally provided portion of the cap guiding groove 4B. At the same time, the guide cylinder 3 rotates, and further, the cap 11, the cap support cylinder 5, and the cartridge 1 are guided to the distal end port 18 of the exterior body 14, and the cap 11 is stored in the hole 15 of the exterior body 14. .
Finally, in the state III to the state IV, the cartridge projection 2 moves on the spiral part of the spiral cartridge guiding groove 4A, and the support cylinder projection 9 is provided on the cap provided on a plane perpendicular to the axis. The portion of the guide groove 4B is moved. At this time, the cap 11, the cap support cylinder 5, and the cartridge 1 do not rotate, but only the guide cylinder 3 rotates.
Thus, the pen tip provided at the tip of the cartridge 1 is exposed. When the rotating body 22 is rotated in the opposite direction, the guide cylinder 3 is also rotated, and acts in the opposite manner to the above method, so that the cap 11 and the tip of the cartridge 1 can be kept airtight again.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to FIG. 1, FIG. 2, FIG. 3, FIG.
This will be described in more detail with reference to FIGS. Reference numeral 1 denotes a cartridge, in which an ink occluding body impregnated with ink is built in, a pen core is held at a tip, and a pair of cartridge projections 2 are provided on a rear outer peripheral surface at opposing positions. Reference numeral 3 denotes a cylindrical guide cylinder, which is provided with four guide grooves 4 on the outer peripheral surface, and is arranged outside the cartridge 1. Further, a fixing ring 10 is provided behind the guiding groove 4. The guide groove 4 includes a cartridge guide groove 4A for guiding the cartridge 1 and a cap guide groove 4B for guiding the cap support cylinder 5. 5 is a cylindrical cap support cylinder with a part cut off at the tip,
A cap support piece 6 which is arranged outside the guide cylinder 3 and has a hole 7 at the distal end is provided at a pair of opposed positions. A projection 8 is provided at an intermediate portion, which is guided by a guide groove 19 provided inside the exterior body. A pair of support cylinder projections 9 are provided at the rear end on the inner wall surface of the cap support cylinder 5 at opposite positions. Is provided.

The cartridge projection 2 comes into contact with the cartridge guiding groove 4A, and the support cylinder projection 9 comes into contact with the cap guiding groove 4B to be guided. Reference numeral 11 denotes a cap, and a pair of support receiving pieces 13 having a shaft 12 stretched at an open end are provided at opposing positions. The shaft 12 of the cap 11 is rotatably inserted and supported in the hole 7 of the cap support piece 6. Further, the cap 11 is press-fitted to the tip of the cartridge 1 and can be kept airtight. In particular, the airtightness between the cap 11 and the cartridge 1 is important. To ensure the airtightness, the cap 11 may be made of rubber, or may be kept airtight by using a rubber airtight ring. There is no problem with this point configuration as long as airtightness can be maintained when the cap 11 is repeatedly attached and detached. Reference numeral 14 denotes an exterior body, which includes a cartridge 1, an induction cylinder 3, a cap support cylinder 5,
The cap 11 and a part of the rotating body 22 are incorporated therein. A hole 15 into which the cap 11 is inserted and housed is provided at the tip of the exterior body 14, and a hook 17 to which the convex portion 16 of the cap 11 is guided is provided behind the hole 15.

Further, a tip port 18 is provided on a plane perpendicular to the axis. A guide groove 1 for guiding a projection 8 provided on the surface of the cap support cylinder 5 forward at the tip thereof.
9 are provided on the inner wall. At the rear end, a fixing ring 10
Has a fixing groove 20 for rotatably supporting the. Also,
Further, the rear end is a screw portion, and the holder 21 is screw-fitted, and the rotating body 22 that is key-engaged with the guide cylinder 3 from the rear open end of the holder 21 is exposed and held.
Reference numeral 22 denotes a rotating body which is key-engaged with the rear portion of the guide cylinder 3 and transmits the rotational power of the rotating body 22 to the guide cylinder 3.

Next, the method of using the writing instrument according to the present invention will be described with reference to the rotating body 22 exposed from the open end of the holder 21.
Is rotated. Then, since the guide cylinder 3 and the rotating body 22 are engaged by the key, the guide cylinder 3 rotates. At this time, the cartridge projection 2 provided on the cartridge 1 and the support cylinder projection 9 provided on the cap support cylinder 5
Are guided in contact with the cartridge guide groove 4A and the cap guide groove 4B provided on the peripheral surface of the guide cylinder 3,
First, the cap 11 and the cap support cylinder 5 move forward to release the airtightness between the cap 11 and the cartridge 1. When the rotating body 22 is subsequently rotated, the cap 11 is
Hook portion 17 provided on the inner wall of the convex portion 16 provided on the 3 outer package 14 is inserted housed in contact with the hole 15. Further, when the rotating body 22 is rotated in this state, the pen core held in front of the cartridge 1 is exposed from the front end port 18, and
Writable. After use, the rotating body 22 is rotated in the opposite direction to the above, the pen core is stored, and the airtightness between the cap 11 and the cartridge 1 is maintained again.

[0011]

[Effects] The present application has the above configuration, and the following effects can be obtained. It is not a method in which the pen tip pushes and opens the valve or the cap 11, but since the pen tip does not touch a portion requiring airtightness, airtightness is released, so that airtightness can be reliably maintained many times.
Since the opening and closing of the cap 11 can be reliably performed only by the rotation of the rotating body 22, the opening and closing of the cap 11 can be easily performed by a series of operations. Since the cap 11 is integrally provided inside, the form is convenient without losing the cap 11. Since the cap 11 is not supported by a string or the like, the assembly is simple and the assembly cost and the die cost can be reduced.

[0012]

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view taken along the line AA of state I according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along the line BB of state I according to the first embodiment of the present invention.

FIG. 4 is an AA sectional view of a state IV according to the first embodiment of the present invention.

FIG. 5 is a sectional view taken along the line BB in a state IV according to the first embodiment of the present invention.

FIG. 6 is a perspective view of parts according to the first embodiment of the present invention.

FIG. 7 is a half sectional view of an outer package according to the first embodiment of the present invention.

FIG. 8 is a half sectional view of a cap support cylinder according to the first embodiment of the present invention.

FIG. 9 is a developed view of the guide cylinder according to the first embodiment of the present invention.

[0013]

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cartridge 2 Cartridge protrusion 3 Guide cylinder 4 Guide groove 5 Cap support cylinder 6 Cap support piece 7 Hole 8 Protrusion 9 Support cylinder protrusion 10 Fixing ring 11 Cap 12 Shaft 13 Support receiving piece 14 Exterior body 15 Hole 16 Convex part 17 Hook part 18 Tip opening 19 Guide groove 20 Fixing groove 21 Holder 22 Rotating body

Claims (1)

(57) [Claims] 1. A cartridge 1 having a pen core at a tip.
Is provided, and a pair of cartridge projections 2 are stretched at opposite positions on the rear surface of the cartridge 1, and a guide cylinder 3 having a guide groove 4 formed on the peripheral surface is disposed on the outer periphery of the rotary body 22. Further, a pair of support cylinder projections 9 are provided on the outer periphery thereof at positions opposed to the inner wall surface, and caps 11 are formed at the tips.
Is disposed, and the guide groove 4 is provided.
Makes these cartridges projections 2 and the supporting cylinder protrusions 9 abut induction, further, has a hole 15 for accommodating the cap 11, arranged exterior body 14 covers the entire of the rotary member 22 <br / > With the writing instrument which opens and closes the cap 11 by turning, and further exposes the cartridge 1 from the tip of the exterior body 14,
The cap 11 is provided with a pair of shafts 12 at opposing positions, and one side of the two support receiving pieces 13 on which the shafts 12 are provided is formed as a convex portion 16, and is provided at the rear end of the convex portion 16 and the hole 15. The cartridge guide groove 4A for guiding the cartridge projection 2 provided on the cartridge 1 with the cap 11 inserted into the hole 15 by contact with the hook portion 17 is provided with a rear portion provided on a plane perpendicular to the axis, and The cap guide groove 4B has a rear portion provided in a spiral shape, and the front portion is provided on a plane perpendicular to the axis of the guide tube 3, in contrast to the above. The cartridge guide groove 4
A and the rearmost or frontmost part of the cap guide groove 4B are:
A writing implement characterized by being located on the same plane parallel to the axis.