JP2880865B2 - Writing implement - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing implement, and more particularly, to a writing implement of a type for supplying ink filled in a main body to a writing tip via an outflow control valve.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, an ink filling portion 105 is provided in a main body portion 100 gripped at the time of writing, and a writing tip 200 is slidably mounted on a front end opening portion of the main body portion 100. The writing tip 200 and the ink filling unit 105
There is known a writing implement in which an ink outflow control valve 300 is interposed between the writing implement. Such a conventional writing instrument outflow control valve 30
0 is connected to the back of the writing tip 200
And a coil spring 302 for urging the valve rod 301 toward the writing tip 200.

When not in use, the urging force of the coil spring 302 moves the valve body 303 of the valve rod 301 to the valve seat 304.
, And close the outflow path of the ink filling section 105 and the writing tip 200 to leak ink (outflow) to the writing tip side.
During writing, the writing tip 200 is pressed against the paper surface so that the writing tip 200 and the valve rod 301 are filled with ink.
By sliding in the five directions, the valve element 303 is separated from the valve seat 304 to open the outflow path and supply the ink in the ink filling section 105 to the writing chip 200.

[0004]

The above-mentioned conventional outflow control valve
According to 300, the coil spring 302 having an urging force capable of reliably preventing ink leakage from the writing chip 200 when not in use is used. writing tip 200 relatively with a large pressing force against the biasing force of the
Must be pressed against the paper.

Therefore, ink is supplied to the writing chip 200.
In addition to the work of interrupting writing and pressing the writing chip 200 against paper or the like , the pressing force has an effect on the amount of ink supplied, so writing is frequently performed if the pressing force is small. When the pressing force is too large, the ink has come out too much, causing a dropping of the ink. Furthermore, writing
Each time ink is supplied to the tip 200, the writing tip 200
Excessive pressing force, that is, excessive load
The quality of the writing tip 200 is said to be shortened.
Had disadvantages.

Further , it is necessary to prevent the ink from dropping as described above.
A well-developed writing instrument has been proposed and known (Sho 57
No. 133251). Outflow control of ink of such writing implement
The valve is a book on which a writing tip (pen tip) is slidably mounted.
A first ink chamber in the main body is provided at a tip opening side in the body.
(Ink filling section) and the second a
Ink chamber and a second valve hole of the second ink chamber.
And a second valve body attached to the writing tip in the direction of the writing tip.
A second spring for biasing and communicating with the first ink chamber;
A first valve disposed in a first valve hole of a second ink chamber
Body and the first valve body are stronger than the second spring.
The first spring that is urged in the writing tip direction by the urging force
And

In writing, first, the first
With a relatively large pressing force against the urging force of the spring
Press the writing tip firmly against the paper, etc.
And slide the first valve body toward the first ink chamber.
1 and 2 to open the respective valve holes, and
Ink flows into the second ink chamber through the first valve hole.
At the same time, the ink in the second ink chamber is written through the second valve hole.
Supply ink to the writing tip by flowing it to the tip
You. Writing tip from the second ink chamber through the second valve hole
When ink is supplied to the pump, surrounding space, and absorbent material
The pressing force of the writing tip against the paper surface is
Weaker than the biasing force of the ring, biasing the second spring
The second valve body is seated in the second valve hole by force, and the second valve hole is
And the first spring is biased by the biasing force of the first spring.
Is seated in the first valve hole, and the first valve hole is closed.
It is supposed to be written in a state where it is left.

By the way, the writing of Japanese Utility Model Publication No. Sho 57-132591
The writing tip is similar to the writing tip
Of ink supply, which is influenced by the pressing force of
Key or the pressure (liquid pressure) of the first ink chamber.
To prevent ink dropping caused by excessive supply of ink.
On the other hand, at the time of writing, as described above
The second valve hole is in a closed state together with the first valve hole.
That is, the urging of the second spring that closes the second valve hole
The force is set stronger than the writing pressure. Therefore, the second
Supply of ink to the writing chip through the valve hole of
Because it is in a state that cannot be done at the time of writing,
When the ink on the chip is consumed by writing, the second
Pressing force stronger than the pen pressure against the urging force of the spring
Press the writing tip against the paper to open the second valve hole
Supply of ink from the second ink chamber to the writing chip side
Not only must the writing be interrupted, but also the second
When the ink in the ink chamber is consumed, the writing tip is pressed against the paper surface or the like with a larger pressing force against the urging force of the first spring, and the ink is transferred from the first ink chamber to the second ink chamber. An ink replenishment operation for inflow replenishment must be performed.

Accordingly, Japanese Utility Model 57 - of 132,591 No. conventional also described above in the writing instrument Japanese writing instrument Like, writing writing tip with a large pressing force than writing pressure to interrupt the the sheet surface or the like is pressed against the second Not only must the supply of ink from the ink chamber to the writing chip and the replenishment of ink from the first ink chamber to the second ink chamber be performed frequently, but each time the writing chip is too large. Since the pressing force is applied, the life of the writing tip is shortened.

[0010] Also, Japanese Utility Model 57 - 132,591 discloses a writing instrument writing tip and a second valve body, and without connection with the second valve body and a first valve body, moreover, the second valve body Is a support structure supported in a state inserted into the second valve hole, and the first valve body is supported in a state inserted into the first valve hole.
The second valve element is slid in the direction of the second ink chamber to supply ink to the writing chip that opens the second valve hole, and the first valve element is connected via the second valve element. Is slid toward the first ink chamber to open the first valve hole together with the second valve hole. At the time of refilling the second ink chamber with ink, the trailing end of the writing tip in contact with the second ink chamber. The second that starts to move by being pushed by
Not only the first valve element but also the first valve element which is pushed and moved by the contact with the second valve element is displaced from the axial center line so that the first valve element falls, and as a result, the first valve element , The second valve body, in particular, the second valve body is supported in an inserted state.
There is a possibility that the movement of the valve hole may be slowed by being caught on the edge of the valve hole or the like, or the lock may be completely locked.

The present invention has been made in view of such a conventional situation, and an object of the present invention is to provide a writing instrument of a type for supplying ink filled in a main body to a writing chip via an outflow control valve. In addition to being able to prevent ink dripping, etc., it is also possible to continuously supply an appropriate amount of ink to the writing chip without frequently applying excessive pressing force to the writing chip, and continue writing without interrupting writing. It is another object of the present invention to provide a writing instrument which enables the opening and closing operation of the outflow control valve mechanism.

[0012]

Means for Achieving the Object To achieve the above object, a writing instrument according to the present invention is a writing instrument in which a writing tip is mounted at the tip of an ink filling section via an ink outflow control valve, wherein the outflow control valve is provided. , Located behind the writing tip,
A first control valve unit that opens at a writing pressure during writing to supply an appropriate amount of ink to a writing chip, and is disposed at a rear portion of the first control valve unit and has a pressing force greater than the writing pressure during writing. A second control valve unit that opens to supply a relatively large amount of ink to the writing chip, and further includes a second valve body that constitutes the second control valve unit. (1) A communication port for continuously supplying ink is opened on the control valve section side. The first control valve portion is disposed on the rear side of the writing tip, has a first valve port at a front end, and is opened and closed by a second valve body of a second control valve section at a rear end. In the inner cylinder provided with the first, the writing pressure communicates with the writing tip with the writing pressure
A first valve body which is urged in a valve opening direction to close the first valve opening is loaded, while a second control valve portion is disposed from the inner cylinder toward the ink filling portion side. The outer wall formed with a conductive groove for ink inflow on the peripheral wall protruding into the ink filling portion is urged in the direction of the second valve port by a pressing force larger than a writing pressure at the time of writing. A second valve body for closing the second valve port is loaded, and the second valve body is further provided with a communication port for constantly communicating between the outer cylinder and the inner cylinder in the closed state. It is characterized by the following. At the front end of the first valve rod having the first valve body, a holding hole for integrally fitting and holding the rear side of the writing chip is provided, and a through hole communicating with the writing chip is provided on a peripheral wall of the holding hole. The opening is formed so that ink is continuously supplied to the writing chip from the through hole, and the rear end of the first valve rod is slid on the front end of the second valve rod having the second valve body. A guide hole for movably inserting and supporting is provided, and a rear end of the second valve rod is slidably inserted into and supported by a through hole formed on a rear end side of the outer cylinder. The second valve rod is slidably disposed in a state where these are connected coaxially.

[0013]

According to the above arrangement, the first control valve is opened by the writing pressure during writing, an appropriate amount of ink is supplied to the writing chip through the first control valve, and the second control valve is opened. The ink is continuously opened to the first control valve portion through a communication port communicating from the ink filling portion to the first control valve portion when the second valve member is closed. Supplied. Accordingly, an appropriate amount of ink is continuously and stably supplied to the writing chip through the first control valve unit without interrupting writing. Then, only when the ink impregnation amount of the writing chip is extremely small at the first use after purchase or after a considerable period of use, the writing chip is pressed against the paper surface with a pressing force larger than the writing pressure at the time of writing. By attaching, the second control valve portion is opened, and a relatively large amount of ink is supplied to the writing chip through the second control valve portion.
The rear end of the writing tip is inserted and held in a holding hole provided at the front end of the first valve rod, and the rear end of the first valve rod is the second end.
A guide hole provided at the front end of the valve rod is slidably inserted and supported, and a rear end side of the second valve rod is slidably inserted and supported by a through hole provided at the rear end of the outer cylinder. . That is, the writing tip, the first valve rod, and the second valve rod are slidably disposed coaxially connected.
Accordingly, not only the movement of the first valve rod which slides in the direction of the ink filling portion due to the writing pressure at the time of writing, but also the case where the ink impregnation amount in the writing chip is extremely small as at the time of purchase, etc. The movement of the second valve rod that slides in the direction of the ink filling portion via the first valve rod by the pressing force greater than the pen pressure can also be reliably performed. That is, when the writing tip is pressed against the paper surface or the like, the movement of the writing tip is controlled by the first valve rod, And it can transmit to a 2nd valve rod reliably.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the writing instrument according to the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a bottomed cylindrical main body having an open end, 2 denotes an outflow control valve inserted and disposed in a front end opening 1 b of the main body 1, and 3 denotes a main body 1 through the outflow control valve 2. A writing tip 4 slidably mounted in the front end opening 1b of the writing tip 4 is a cap for covering the writing tip 3 in a substantially airtight manner.

The main body 1 is formed integrally with a bottomed cylinder having dimensions suitable for writing, and has a hollow interior containing ink as an ink filling portion 1a , and the tip opening 1b side has a slightly smaller diameter. The outflow control valve 2 is inserted and disposed.

The outflow control valve 2 fits the outer cylinder 6 into which the inner cylinder 5 can be inserted into one half of the rear part of the writing tip 3 and the tip half 1b with the other half protruding into the ink filling portion 1a . The first control valve portion 2a is coaxially disposed in the inner cylinder 5 at the rear of the writing chip 3, and the outer cylinder 6 positioned at the rear of the first control valve portion 2a. The second control valve portion 2b is arranged coaxially in the other half side of the control valve.

A small-diameter first valve port 51 is opened at an end of the inner cylinder 5 on the rear side of the writing tip 3, and a first valve seat 52 is formed on the inner periphery thereof. Also, the ink filling section 1a in the inner cylinder 5
A large-diameter second valve port 53 is opened at the side end, and the second valve port 53 is opened.
A second valve seat 54 is formed at the rim of 53 so as to be positioned almost halfway in the outer cylinder 6. In the inner cylinder 5, there is provided a first
The first valve rod 7 having the valve body 72 is loaded so as to be slidable coaxially.

A second valve rod 8 having a second valve body 82 described later is provided inside the outer cylinder 6 on the side protruding into the ink filling portion 1a .
Is mounted so that it can slide coaxially. In the peripheral wall of the outer cylinder 6, there are provided one or more conductive grooves 61 for inflow of ink, and a through-hole 62 for slidably inserting and supporting the second valve rod 8 with an end opening having a small diameter. To form

The first valve rod 7 is provided at its front end with a holding hole 71 for integrally inserting and holding the rear end side of the writing tip 3, and the rear end side is formed to have a small diameter that is one turn smaller.
The valve rod 8 is formed so as to be slidably inserted into and supported by a guide hole 81 formed at the front end of the valve rod 8. Further, on the outer circumference of the first valve rod 7 comprises a first valve body 72 a flange-shaped opening and closing the first valve port 51 diameter shaped contact or away to the first valve seat 52, and the first valve body 72 It is biased to the writing tip 3 direction by the first coil spring 9 which is mounted between the second valve rod 8 seated on the first valve seat 52 of the first valve port 51, closing the first valve port 51 It is supposed to. A through hole 55 is formed in the peripheral wall of the holding hole 71 to allow the first valve port 51 to communicate with the writing tip 3. That is, the ink that has flowed into the writing chip 3 from the first valve port 51 is continuously supplied to the writing chip 3 from the through hole 55 .

The writing tip 3 transfers ink to be impregnated and held therein to the paper surface, and is made of a well-known porous material or fiber material. The tip case 1c attached to the outer periphery of the tip of the main body 1 and the tip case 1c It is slidably supported by a ring-shaped or cylindrical support member 1d loaded in 1c . Further, the rear side 31 is formed to have a small diameter of one turn, and is inserted into the holding hole 71 so as to be integrally held by the first valve rod 7 and slide integrally with the first valve rod 7. Become The support member 1d is made of a porous member such as urethane, and absorbs and retains excess ink from the writing tip 3.

The elastic force of the first coil spring 9, the writing by the writing pressure at the time of writing tip 3 is ink filling portion 1a
The first valve rod 7 slides integrally when sliding in the direction, the first valve body 72 is separated from the first valve seat 52 , and the first valve port 51 is set to such an extent that the first valve port 51 is opened. .

The second valve rod 8 has a first valve rod 7 at its front end.
The small-diameter shape of the rear end side together with the opening a slidably inserted supported to the guide hole, the outer periphery flange-like opening and closing the second valve port 53 of the large径状apart against the said second valve seat 54 of the A second valve body 82 is provided. The second valve spring 82 is urged in the direction of the writing tip 3 by a second coil spring 10 loaded between the second valve body 82 and the inner surface end of the outer cylinder 6 so that the second valve port 53 is closed. The user sits on the second valve seat 54 and closes the second valve port 53 . The second valve element 82 is provided with a communication port 83 for continuously supplying an appropriate amount of ink flowing from the ink filling portion 1a through the conductive groove 61 of the outer cylinder 6 into the inner cylinder 5. That is, even if the second valve body 82 is seated on the second valve seat 54 of the second valve port 53 by the second coil spring 10 and the second valve port 53 is closed, the outer cylinder 6 is closed. An appropriate amount of ink is continuously supplied from the ink filling portion 1a into the inner cylinder 5 through the conductive groove 61 of the peripheral wall.

The resilience of the second coil spring 10 is such that when the writing tip 3 and the first valve rod 7 are slid toward the ink filling portion 1a by a pressing force larger than the writing pressure at the time of writing, The second valve rod 8 slides in the direction of the ink filling portion 1a integrally with the second valve body 82 to move the second valve body 82 into the second valve seat 54.
And the second valve port 53 is set to such an extent that the second valve port 53 is opened.

The first valve body 72 , the first valve seat 52 , the first coil spring 9 and the like constitute a first control valve portion 2a . The first control valve portion 2a slides the writing tip 3 toward the ink filling portion 1a against the first coil spring 9 by the writing pressure at the time of writing, so that the first valve rod 7 slides integrally. Then, the first valve body 72 is separated from the first valve seat 52, and the first valve port 51 is opened. At this time, the second valve body 82 is in the closed state was allowed seated on the second valve seat 54, the outer cylinder 6 in the inner cylinder 5 through the communicating port 83 is opened in the second valve body 82 The inside is kept in communication. Thereby, the conduction grooves 61 on the peripheral wall of the outer cylinder 6,
The communication port 83 opened in the second valve body 82 and the first opened valve
The ink in the ink filling portion 1a is continuously supplied to the writing chip 3 by an appropriate amount through a through hole 55 communicating with the valve port 51 , the inner cylinder 5, and the rear side 31 of the writing chip 3. Therefore, the supply of ink is not interrupted at the time of writing, and the supply of a stable and appropriate amount of ink from the ink filling unit 1a is continuously performed to the writing chip 3, so that the continuous writing is performed without interrupting the writing. (See FIG. 2).

The second valve body 82 , the second valve seat 54 , the second coil spring 10 and the like constitute a second control valve portion 2b . The second control valve portion 2b moves the writing valve 3 toward the ink filling portion 1a against the second coil spring 10 by a pressing force larger than the writing pressure at the time of writing. Further slide in the direction of the ink filling section 1a to make the first valve port
At the same time as opening the valve 51 to a greater extent, the second valve rod 8 also slides integrally in the direction of the ink filling portion 1a to move the second valve rod 8 from the second valve seat 54 to the second valve seat 54 .
The valve body 82 is separated, and the second valve port 53 is opened. As a result, the conductive groove 61 in the peripheral wall of the outer cylinder 6, the communication port 83 opened in the second valve body 82 , the opened second valve port 53 and the first valve port 51 , the inside of the inner cylinder 5, the writing tip 3 A relatively large amount of ink in the ink filling section 1a is supplied to the writing chip 3 through a through hole 55 communicating with the rear side 31 (see FIG. 3). That is, the ink can be supplied quickly and in a short time to the amount of ink impregnated on the writing chip 3.

Therefore, according to the writing implement of the present embodiment configured as described above, only when the amount of ink impregnated into the writing tip 3 at the time of first use after purchase or use after a considerable period of time is extremely small. By pressing the writing chip 3 against paper or the like with a pressing force greater than the writing pressure at the time of writing, a relatively large amount of ink can be supplied to the writing chip 3 and the ink impregnation amount of the writing chip 3 can be written. Can be done quickly to the state. Then, at the time of writing, a stable and appropriate amount of ink that does not cause ink dropping or the like is continuously supplied from the ink filling unit 1a to the writing chip 3 so that writing is continued without interruption. It is possible to continue writing.

In the present embodiment, the peripheral wall of the main body 1 has a single-layer structure and the hollow interior is filled with ink. However, the present invention is not limited to this. Also, it can correspond to the main body 100 having an outer two-layer structure.

The main body 100 shown in FIG. 4 will be briefly described. An outer pipe 102 is provided over substantially the entire length outside an inner pipe 101 to be filled with ink.
A gap 103 is secured between 101 and 102 , and an outside air introduction hole 104 communicating with the gap 103 is formed at an appropriate position of the outer pipe 102 .

The heat blocking effect of the gap 103 and the outside air introduction hole 104 prevents the internal pressure of the filling portion 105 from increasing due to the body temperature of the user gripping the main body portion 100 at the time of writing. This can be prevented beforehand.

Further, the writing implement of the present invention is not limited to a so-called disposable type in which ink is directly filled in the main body 1 or 100, but a type in which an ink-filled cartridge is exchangeably loaded in the main body 1 or 100 (see FIG. (Not shown) is also possible.

[0031]

The present invention is constructed as described above.
Therefore, the following effects are obtained. . For normal pen pressure
To operate the first control valve and write the ink from the ink filling section.
So that the proper amount of ink is continuously supplied to the
The writing is done like a conventional writing instrument.
Stop and press the chip against the paper with relatively large pressing force
Stably supply the appropriate ink without requiring
Can be supplied continuously. Therefore, you must stop writing halfway
Without the need for continuous writing. Moreover, the second control valve section is made.
Purchasing with moving and supplying a relatively large amount of ink
The ink impregnation amount on the writing tip as in the beginning
It can handle even small amounts, and therefore, compared to traditional writing instruments
Thus, the load on the writing tip can be greatly reduced.

[0032] Since the writing chip, the first valve rod, and the second valve rod are slidably disposed in a state where they are coaxially connected, not only the writing but also the ink in the writing chip as originally purchased. When the impregnation amount is extremely small, for example, when the writing tip is pressed against the paper surface with a pressing force larger than the writing pressure at the time of writing and the writing tip is slid in the direction of the ink filling portion, the movement of the writing tip is determined by the first valve. The second valve rod is reliably transmitted to the second valve rod which is coaxially connected and disposed via the rod, and the second valve rod is slid toward the ink filling portion to reliably open the second valve port. it can. In other words, when the writing tip is pressed against the paper surface or the like, the movement of the writing tip is performed without causing a run-out or the like in a connected state of the first valve rod and the second valve rod including the writing tip on the axis of the axis. The second valve rod is reliably transmitted to the second valve rod, and the second valve rod is slid in the direction of the ink filling section to open a second valve port that allows a relatively large amount of ink in the ink filling section to flow to the writing chip. The reliability of the opening and closing operation of the control valve mechanism is achieved.

Therefore, according to the present invention, there is no occurrence of dropping of ink and the like, and an excessive pressing force for shortening the life of the writing chip, that is, an excessive load is not frequently applied to the writing chip. Since each ink can be continuously supplied to the writing chip, continuous writing can be performed without interrupting writing as in a conventional writing instrument. Therefore, a more comfortable use feeling can be obtained, and the life of the writing tip can be extended to improve the quality. Further, a novel writing instrument which can expect various effects such as improvement of reliability by certainty of opening / closing operation of the outflow control valve mechanism can be provided, which is useful.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the writing instrument of the present invention,
Partially omitted

FIG. 2 is an enlarged view of a main part of FIG. 1, showing a state at the time of writing.

FIG. 3 is an enlarged view of a main part of FIG. 1, showing a state at the start of use.

FIG. 4 is a longitudinal front view of a conventional writing instrument.

[Explanation of symbols]

1: Main unit 1a: Ink filling unit 2: Outflow control valve 2a: First control valve unit 2b: Second control valve unit 3: Writing chip 31 : Rear side 5: Inner cylinder 51 : First valve port 52 : First Valve seat 53 : second valve port 54 : second valve seat 55 : through hole 6: outer cylinder 61 : conduction groove 62 : through hole 7: first valve rod 71 : holding hole 72 : first valve body 8: second Valve rod 81 : Guide hole 82 : Second valve body 83 : Communication port

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B43K 8/18 B43K 5/18

Claims (4)

(57) [Claims] 1. A writing instrument having a writing tip mounted on an end of an ink filling section via an ink outflow control valve, wherein the outflow control valve is disposed at a rear portion of the writing tip, and is opened by writing pressure during writing. A first control valve unit for supplying an appropriate amount of ink to the writing chip, and a first control valve unit disposed behind the first control valve unit.
A second control valve for supplying a relatively large amount of ink to the writing chip by opening the valve with a pressing force greater than the writing pressure at the time of writing , and further comprising a second valve body constituting the second control valve Is closed
In the valve state, from the ink filling section to the first control valve section side
A writing implement characterized by having a communication port that continuously supplies ink . 2. The writing instrument according to claim 1, A first control valve portion is disposed on the rear side of the writing tip, and has a front end.
And a second valve of a second control valve portion at a rear end.
When writing in the inner cylinder with the second valve port opened and closed by the body
Is urged toward the first valve port communicating with the writing tip
And a first valve body for closing the first valve port.
On the other hand, the second control valve portion is directed from the inner cylinder toward the ink filling portion.
On the peripheral wall protruding into the ink filling portion.
Is written in the outer cylinder with a conductive groove for ink inflow.
Energized in the direction of the second valve port with a pressing force greater than the writing pressure at the time
And a second valve body for closing the second valve port is loaded.
Further, the second valve body has the inner cylinder and the inner cylinder in the closed state.
A communication port that constantly communicates with
Writing instrument. 3. The writing instrument according to claim 2, At the front end of the first valve rod having the first valve body, a writing tip
When a holding hole is provided to insert and hold the rear
Then, a through hole communicating with the writing tip is opened in the peripheral wall of the holding hole.
The ink is continuously supplied to the writing tip through this hole.
A writing implement characterized by being supplied. 4. The writing instrument according to claim 2, wherein The first valve rod is provided at the front end of the second valve rod having the second valve body.
A guide hole to slidably insert and support the rear end of the
With the rear end of the second valve rod toward the rear end of the outer cylinder. Opened
The writing tip and the first bar are slidably inserted into the through holes and supported.
A state in which the lube rod and the second valve rod are coaxially connected.
Writing implements characterized by being arranged in.