JP2017209863A - Ink suction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a push-type ink suction device capable of quickly moving ink staying at an axial rear part in an ink storage chamber toward an axial front part so as to surely reach a pen core when the posture of a pen is changed from a state of being directed upward to a state of being directed downward.SOLUTION: An ink storage chamber 2c includes a movement piece member 10. A pipe 8 is inserted into the movement piece member 10. The movement piece member 10 moves back and forth while slidingly contacting with the pipe 8 between a sleeve 5 and a piece 9. The movement piece member 10 is accommodated by self-weight in a front recess 5a disposed ahead of the sleeve 5 in a state in which a push rod 6 is directed downward.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an ink suction device that is mounted behind a pen core of a fountain pen and sucks ink.

  Conventionally, fountain pens use an ink suction device that is used by being mounted behind the pen core. Normally, an ink suction device has a structure in which a valve disposed in an ink storage chamber is moved by operating an operation portion to suck ink, and as an operation method, the operation portion is rotated to operate the valve. Rotating type that sucks ink by retreating, slide type that slides the operation part to retract the valve and sucking ink by retreating the valve, and sucking ink by pushing the operation part and moving the sleeve back and forth There is a push type.

  Among the operation methods described above, the push-type ink suction device, as disclosed by the present applicant in Patent Document 1 (Japanese Utility Model Publication No. 6-15716), advances the sleeve by pushing the push bar, By opening it, the sleeve is retracted by the projectile, and the ink storage chamber is negatively pressured to suck ink. By repeatedly pushing the push rod, ink can be gradually sucked into the ink storage chamber. Therefore, since a large volume of ink can be sucked into the ink storage chamber without increasing the overall length of the ink suction device, it can be used with various fountain pens. Has gained popularity.

  In the push-type ink suction device, as described above, since the ink is sucked into the ink storage chamber by repeating the push, the ink storage cylinder forming the ink storage chamber is transparent so that it can be visually recognized from the outside. At the same time, the ink storage cylinder needs to be fitted to the pen core or the neck adjacent to the pen, and the ink storage cylinder needs to be flexible. For this reason, the selection of the material of the ink storage cylinder is limited, and depending on the type of ink, the wettability of the ink with respect to the inner surface of the ink storage cylinder is deteriorated, for example, from the state where the pen is directed upward When the pen is turned down for writing, the ink accumulated in the back of the ink storage chamber stays at the surface tension due to gravity, and it is difficult to flow to the pen core side, thus hindering writing. There was a case.

By the way, in the rotary type ink suction device, as disclosed in Patent Document 2 (Japanese Patent No. 5744777), a moving piece member that can move back and forth in the axial direction is arranged in the ink storage chamber to store the ink. There has been proposed a fountain pen that makes it easy for the ink collected in the back of the chamber to flow toward the pen core.
However, in the push-type ink suction device, when the ink is sucked, it is necessary that the piece connected to the pipe falls by its own weight and comes into contact with the inner stage formed in the ink containing cylinder. When the moving piece member as described in Patent Document 2 is provided, the moving piece member obstructs the contact state between the piece and the inner stage, and ink cannot be sufficiently sucked. In the push-type ink suction device, there is a space between the sleeve and the piece with the pen tip facing upward, and the ink in the ink containing chamber is reduced so that the surface of the ink is between the sleeve and the piece. When writing with the pen pointing down, the moving piece member on the pen core side will move forward without touching the ink, depending on the type of ink. In some cases, the ink cannot move to the pen core only by its own weight.

Japanese Utility Model Publication No. 6-15716 Japanese Patent No. 5744777

  In view of these facts, the present invention promptly moves the ink accumulated in the axially rearward direction of the ink storage chamber to the axially forward direction when the posture of the pen is changed from the upwardly directed state to the downwardly directed state. An object is to obtain a push-type ink suction device that can be moved and reliably guided to a pen core.

The present invention
“A push bar with a sleeve that moves in close contact with the inner surface of the ink containing cylinder is disposed in the ink containing cylinder that opens forward and has an ink containing chamber inside, and is formed in a hole formed in the sleeve. A pipe provided in front of a piece that contacts the inner stage formed in the ink containing cylinder is inserted, and the push bar is advanced in a state where the push bar is directed upward to advance the piece by its own weight. A push-type ink suction device that sucks ink into the ink storage chamber by contacting the inner stage of the ink storage chamber and discharging the air in the ink storage chamber forward through the pipe and then moving the push bar backward. The pipe is inserted into the ink containing chamber, and moves back and forth while slidingly contacting the pipe between the sleeve and the piece, and the push rod is directed downward and the sleeve is moved by its own weight. Ink suction apparatus characterized by being arranged to move the bridge member which is accommodated in the front concave portion provided in the front. "A.

The inner diameter of the hole formed in the moving piece member through which the pipe is inserted is formed to have an inner diameter dimension that allows the moving piece member to slide through the pipe, and the outer diameter of the moving piece member is accommodated in the front concave portion of the sleeve. The outer diameter dimension to be used.
Accordingly, since a gap is formed between the moving piece member and the inner surface of the ink storage cylinder, it is not possible to prevent the backward movement of the bubbles entering from the pen core as the ink in the ink storage chamber decreases due to writing. In addition, since the moving piece member does not come into contact with the inner surface of the ink storage cylinder when moving back and forth, the inner surface of the transparent ink storage cylinder is not damaged.
The moving piece member needs to be heavy enough to move the ink collected behind the ink storage chamber to the pen core side when the pen is turned upward for writing. It is preferable to form with a material that is not corroded by ink. When the pipe is formed of stainless steel, the moving piece member is also formed of stainless steel, so that different metal contact corrosion can be prevented.
Further, by applying a satin finish or a knurling process to the outer surface of the moving piece member, the ink wettability is improved and the ink can be moved more easily.

  According to the present invention, when the posture is changed from a state in which the pen is directed upward to a state in which the pen is directed downward, the ink accumulated in the axial rearward direction of the ink containing chamber is quickly moved forward in the axial direction. A push-type ink suction device that can reliably lead to the pen core was obtained.

It is a figure which shows the state which mounted | wore the fountain pen with the ink suction device of a present Example. It is the state which operated the ink suction device of a present Example, and is a figure which shows the state which pushed the push rod. It is a figure which shows the state which open | released the push rod from the state which pushed the push rod of FIG. It is a figure which shows the state which pointed the pen tip up.

  Hereinafter, the ink suction device of the present embodiment will be described with reference to the drawings. In this embodiment, the state in which the ink inhaler is mounted on the fountain pen will be described. However, the ink inhaler of this embodiment is not only a fountain pen but also a writing instrument that uses low viscosity ink such as a fountain pen such as an aqueous marker. Can be used. In the present embodiment, the one with the pen is expressed as the front, and the opposite side is expressed as the rear. In order to make the explanation easy to understand, the same reference numerals are given to the same members and the same parts in the drawings.

FIG. 1 is a view showing a state in which the ink suction device of the present embodiment is mounted on a fountain pen. The ink suction device 1 according to the present embodiment includes an ink storage cylinder 2, a tail cylinder 3 screwed into a rear portion of the ink storage cylinder 2, a push bar 6 including a push bar body 4 and a sleeve 5, and an outer surface of the push bar body 4. A spring 7 disposed between the provided protrusion 4a and the rear end 2a of the ink containing cylinder 2, a pipe 8 loosely fitted in a hole 5b formed in a front recess 5a provided in front of the sleeve 5, A piece 9 fitted to the pipe 8 and a moving piece member 10 loosely fitted to the pipe 8 so as to move back and forth are provided.
As shown in FIG. 1, the ink suction device 1 is attached to a fountain pen 11. The fountain pen 11 has an inner neck member 13 inserted inward of the neck member 12, and a pen core 14 and a pen 15 inserted inward of the inner neck member 13. The ink suction device 1 has a front small diameter portion 2b of an ink containing cylinder 2 inserted between a neck member 12 and an inner neck member 13, and ink (not shown) inside the ink containing chamber 2c is penned. It can be supplied to the lead 14 and written with the pen 15.

The pipe 8 is formed with a protruding portion 8 a protruding outward, and the protruding portion 8 a is engaged with a peripheral portion 5 c of a hole 5 b formed in the sleeve 5. The pipe 8 has a window hole 8b formed in front of the projecting portion 8a, and the window hole 8b communicates with the front end opening 8c and the rear end opening 8d of the pipe 8.
The push rod 6 is always in a state of being elastically ejected rearward by the spring 7, and the push rod body 4 has a protrusion 4 a formed on the side surface of the inner rod 3 b formed in the rear end opening 3 a of the tail cylinder 3. The push bar 6 is controlled to move backward, the rear part of the push bar body 4 is exposed from the rear end opening 3a of the tail cylinder 3, and the push bar 6 is pushed. As described above, the push rod 6 of this embodiment is composed of the push rod body 4 and the sleeve 5, and the small diameter portion 5 d formed at the rear of the sleeve 5 is press-fitted into the locking recess 4 c formed at the front of the push rod body 4. Is formed. An outer flange 5e is formed on the outer periphery of the front end of the sleeve 5, and the sleeve 5 is moved back and forth in a state where the outer flange 5e is in close contact with the inner peripheral surface of the ink storage cylinder 2, so that the air in the ink storage chamber 2c is removed. It can be pressurized or negative.
In this embodiment, the pipe 8 and the moving piece member 10 are made of stainless steel, and the piece 9 is made of fluororubber.

Next, the ink suction method by the ink suction device 1 of this embodiment will be described with reference to FIGS. FIG. 2 is a diagram illustrating a state in which the operation portion 4b of the push rod 6 is pushed, and FIG. 3 is a diagram illustrating a state in which the push rod 6 is released from the state in which the push rod 6 in FIG. 2 is pushed. The ink suction device 1 of the present embodiment pushes the operating portion 4b of the push rod 6 so that the piece 9, the pipe 8 and the moving piece member 10 move forward by their own weight as shown in FIG. The formed inclined surface 9 a is in contact with the inner step 2 d formed on the front inner surface of the ink containing cylinder 2, so that the movement of ink and air is restricted. In this embodiment, in addition to the weight of the fluorine rubber piece 9 and the stainless steel pipe 8, the piece 9 comes into contact with the inner stage 2d by the weight of the stainless steel moving piece member 10, so The contact state with the inner stage 2d is stabilized.
The ink suction device 1 further pushes the operation portion 4b of the push rod 6 from the state where the piece 9 is in contact with the inner stage 2d, whereby the air in the ink storage chamber 2c is pressurized by the sleeve 5 while the pipe 8 It passes through the front end opening 8c from the window hole 8b, passes through the pen core 14 provided adjacent to the front end opening 8c, and goes outside. In this state, the pen core 14 is dipped in the ink 16 to open the operation portion 4b of the push bar 6. As shown in FIG. 3, the sleeve 5 is retracted by the elastic force of the spring 7, and the ink is stored in a negative pressure. The ink 16 can be sucked into the chamber 2c. The ink suction device 1 of this embodiment can fill the ink storage chamber 2c with the ink 16 by repeatedly performing the push operation to the operation unit 4b so that the state of FIG. 2 and the state of FIG. 3 are alternated. it can.

  FIG. 4 is a diagram illustrating a state in which the pen 15 is directed upward in a state where the ink 16 in the ink storage chamber 2c is reduced. As shown in FIG. 4, the ink suction device 1 according to the present embodiment accommodates the ink since the moving piece member 10 is accommodated in the front recess 5 a provided in front of the sleeve 5 with the pen 15 facing upward. Even if the ink 16 in the chamber 2c decreases, the front end 10a of the moving piece member 10 is below the surface 16a of the ink 16, and when the pen 15 is directed downward as shown in FIG. The ink 16 was also moved forward by the movement of the moving piece member 10 due to gravity and moved to the pen core 14 side, so that writing could be performed immediately.

1 ... Ink inhaler,
2 ... Ink storage cylinder, 2a ... Rear end, 2b ... Small front diameter part, 2c ... Ink storage chamber, 2d ... Inner stage,
3 ... tail tube, 3a ... rear end opening, 3b ... inner collar,
4 ... Push rod body, 4a ... Projection, 4b ... Operation part, 4c ... Locking recess,
5 ... Sleeve, 5a ... Front recess, 5b ... Hole, 5c ... Peripheral part, 5d ... Small diameter part, 5e ... Outer casing,
6 ... Push rod,
7 ... Spring,
8 ... Pipe, 8a ... Projection, 8b ... Window hole, 8c ... Front end opening, 8d ... Rear end opening,
9 ... piece, 9a ... inclined surface,
10 ... Moving piece member, 10a ... Front end,
11 ... Fountain pen,
12 ... Neck member, 13 ... Inner neck member, 14 ... Pen core,
15 ... pen,
16 ... ink, 16a ... surface.

Claims (1)

A push bar provided with a sleeve that moves in close contact with the inner surface of the ink containing cylinder is disposed in the ink containing cylinder that has an ink containing chamber in the front and an inward opening, and a hole formed in the sleeve, A pipe provided in front of a piece abutting on the inner stage formed in the ink containing cylinder is inserted, and the push bar is advanced with the push bar facing upward, whereby the piece is advanced by its own weight, and the ink is In a push-type ink suction device that abuts the inner stage of the storage chamber, discharges the air in the ink storage chamber forward through the pipe, and then retracts the push bar, thereby sucking ink into the ink storage chamber The pipe is inserted into the ink storage chamber, and moves back and forth while slidingly contacting the pipe between the sleeve and the piece, and the push rod is directed downward while the sleeve is moved by its own weight. Ink suction apparatus being characterized in that disposed a moving piece member housed in the front recess formed towards.

Images