JP6748040B2 - Valve type liquid material exuding tool - Google Patents

Description

The present invention relates to a valve type liquid material exuding tool, and more specifically, it is applied to a writing instrument such as a direct liquid type marker having a valve mechanism, or a makeup tool or a medical tool, or various coating tools. It is possible to store a sufficient amount of liquid materials such as ink, cosmetics, liquid chemicals, paints, etc., and allow it to permeate into the core at any time for writing or coating, and it is a direct liquid valve type. The present invention relates to a liquid material exuding tool.

Writing instruments such as markers are roughly classified into a batting type in which batting impregnated with ink is loaded in the shaft, and a direct liquid type (raw ink type) in which ink is directly injected into the shaft. Conventionally, there were many batting type markers, but in the case of a batting type, once the tip of the core has dried, it takes time for the ink to seep into the writing ready state again, and when writing quickly, However, there is a drawback that the written characters are blurred because the ink cannot catch up.

On the other hand, in the case of the direct liquid type, since the wick is in direct contact with the ink stored in the liquid material tank shaft and the ink can seep quickly, the tip of the wick does not dry and even when writing quickly. Since ink bleeding follows this, there is no chance that the written characters will be blurred, so recently, the direct liquid type has become the mainstream.

By the way, in the case of the direct liquid type, the ink may excessively exude to the core and a so-called ink drop phenomenon may occur.Therefore, the ink may be discharged to the core through a valve mechanism opened by pushing the core. Many of them are valve-type devices that allow them to soak. However, even in that case, the air inside the shaft thermally expands to hold the liquid material tank shaft during writing, or the pressure inside the shaft rises due to gripping pressure or atmospheric pressure. There is a risk that the ink will ooze out excessively and the ink will drop out. Therefore, conventionally, a method has been adopted in which an absorption ring made of foamed resin is fitted to the inner end of the core, and excess ink is absorbed by the absorption ring to avoid ink dripping.

However, in the case of this conventional valve-type mechanism that uses an absorption ring, not only is it time-consuming to assemble the absorption ring, but also the absorption ring is attached to the inner end of the core, so that it contacts the ink of the wick. The area is reduced, the inhalation efficiency of the ink is reduced, the core is easily dried, and the writing blurring is likely to occur. Therefore, there is a trouble that the valve opening operation by pushing in the lead must be performed frequently. Further, there is a problem that the tip of the lead is easily damaged because the lead is pushed in frequently, and even if a large amount of ink remains, it cannot be used. Such a problem occurs not only in writing instruments, but also in various makeup tools and medical instruments that are used by exuding a liquid material to the tip of the tip, or liquid coating tools such as liquid paints and liquid adhesives.

JP, 2007-111885, A JP, 2005-342950, A

As described above, in the case of the conventional valve-type mechanism that uses the absorption ring, it takes time to assemble the absorption ring, and since the portion of the core that comes into contact with the ink is small at the inner end only, the core easily dries, and the writing blurs. Is also likely to occur. Therefore, there is a trouble that the valve opening operation by pushing in the lead must be performed frequently. Further, since the pushing operation of the lead is frequently performed, the tip of the lead is easily damaged, and even if a large amount of ink remains, there is a problem that it cannot be used in many cases.

Therefore, the present invention can prevent ink spillage without fitting an absorbing ring to the core, and enables many parts of the inner end of the core to come into contact with the liquid material. It is possible to prevent dryness, and it is not necessary to open the valve frequently by pushing the core, there is no early damage to the tip of the core due to frequent operation, and the wicking of liquid material on the core It is an object of the present invention to provide a valve-type liquid material exuding tool that does not cause blistering of handwritten characters, a coating liquid portion, or the like because the filling can be performed quickly.

The invention according to claim 1 for solving the above-mentioned problems, a valve housing cylinder fitted into the tip of a liquid material tank shaft, a mouse inner mounted in the valve housing cylinder, a valve unit case, and An end cap, a core supported by the mouth inner and the tip end portion of the valve housing cylinder, and a valve mechanism incorporated from the mouth inner to the end cap,
The mouth inner is composed of a small diameter portion that holds an inner end portion of the core and a large diameter portion that forms an ink storage portion, and an annular seal portion is formed on an inner peripheral surface of the small diameter portion, From the mouth inner to the end cap, a valve body composed of a joint and a valve body having a core holding portion for holding the inner end portion of the core, and the outer peripheral surface of the joint slides in contact with the annular seal portion in the axial direction. The joint is movably loaded, and in the middle of the joint, an ink introducing portion for introducing the ink in the ink storing portion of the mouth inner and guiding it to the inner end portion of the core ,
The outer peripheral surface of the lead holding portion of the joint is axially separated from the annular seal portion when the lead is not pushed, and is in sliding contact with the annular seal portion when the lead is pushed into the airtight/watertight portion. A valve-type liquid material leaching device characterized by achieving a seal .

In one embodiment, the joint is formed separately from the valve body and integrally joined with the valve body, and in another embodiment, the joint is formed integrally with the valve body.

The ink introducing portion is formed by forming cut-off portions having a fan-shaped cross section at 90-degree intervals, opening the bottom of each cut-out portion, and communicating with a core fitting hole for fitting the inner end portion of the core. Oh Ru.

The valve type liquid material exuding device according to the present invention is as described above, and when the valve is opened, the airtightness and the watertightness are secured by the annular seal portion, so that air leakage and ink leakage at that portion do not occur. Since the ink reservoir is wide enough to supply ink to the wick, the wick is reliably prevented from drying and there is no risk of writing characters or dripping of the coating liquid. It is not necessary to perform the opening operation frequently, and it is possible to prevent early damage to the tip of the core due to the frequent operation, and further, there is an effect that it does not take time to assemble the parts.

It is a front view of one embodiment of a valve type liquid material exudation device concerning the present invention. Sectional drawing on the AA line in FIG. 1 (at the time of not pushing in). (A) It is the CC sectional view taken on the line in FIG. 1, (B) It is the BB sectional view taken on the line in FIG. It is a perspective view which shows the shape example of the mouth inner in the valve-type liquid material exuding tool which concerns on this invention. It is a longitudinal cross-sectional view showing a shape example of the mouth inner in the valve type liquid material exuding device according to the present invention. It is a perspective view showing an example of shape of a joint in a valve type liquid material exudation device concerning the present invention. It is the sectional view on the AA line and the sectional view on the BB line in FIG. FIG. 6 is a vertical cross-sectional view showing the process of opening and closing the valve mechanism and the sealing condition of the annular seal in the valve type liquid material exuding device according to the present invention. It is an enlarged view of the circular part N in FIG. 8(A).

Embodiments for carrying out the present invention will be described with reference to the accompanying drawings. The following description is for the case where the valve-type liquid material exuding device according to the present invention is applied to a valve-type writing instrument, but also when applied to a cosmetic tool or medical device other than the writing instrument, and other various coating tools, Its structure and operational effects are basically the same. In addition, in the following description, the liquid material used is described as ink.

As shown in FIGS. 1 and 2, the valve-type liquid material exuding tool according to the present invention is mounted in the valve storage cylinder 2 and the valve storage cylinder 2 fitted to the tip of the liquid material tank shaft 1. Mouse inner 3, valve unit case 4, and end cap 5, a core 6 supported by the mouth inner 3 and the tip of the valve housing cylinder 2, and a valve mechanism incorporated from the valve unit case 4 to the end cap 5. It is configured (illustration and description of the cap are omitted). In the following description, the core 6 side (left side in FIG. 1) is expressed as the tip side or the upper surface side, and the opposite side is expressed as the rear end side, the lower surface side or the (bottom surface side).

The tip end side of the valve housing cylinder 2 is squeezed to form a lead support portion 7 that slidably supports the tip end side of the lead 6. A plurality of ribs 8 are radially formed on the inner peripheral surface of the core support portion 7. The ribs 8 center the core 6, and a ventilation path is secured along the outer peripheral surface of the core 6 (see FIG. 3). ). In addition, a clearance (for example, 0.1 mm) for ventilation is secured between the inner peripheral surface of the mouse inner 3 and the outer peripheral surface of the core 6 facing the mouse inner 3.

In particular, as shown in FIGS. 4 and 5, the mouth inner 3 includes a small diameter portion 11 that holds the inner end portion of the core 6 and a large diameter portion 12 that forms the ink storage portion 10. The outer peripheral surface is provided with a wing portion 13 that projects radially. Further, a step portion 14 is formed on the inner peripheral surface on the tip side of the small diameter portion 11, and an annular seal portion 15 is formed in the middle of the inner peripheral surface (see FIG. 5). The annular seal portion 15 has a height of about 0.1 mm. As will be described later, the joint 16 moves in the small-diameter portion 11 while the outer peripheral surface of the core holding portion 17 is in sliding contact with the annular seal portion 15, thereby achieving an airtight/watertight seal in that portion. To be done.

A joint 16 that holds the inner end of the core 6 and the head of the valve body 32 of the valve mechanism is loaded in the mouth inner 3 so as to be slidable in the axial direction. The joint 16 may be formed as an independent component and integrally joined to the valve body 33, or may be integrally formed with the valve body 33 as a part of the valve body 33, as in the illustrated example. is there. The following description is for the case where the joint 16 and the valve element 33 are molded separately. Since the same effect can be obtained even in the case of integral molding, the description in that case is omitted.

As shown in FIGS. 6 and 7, the joint 16 has a core fitting hole 18, into which the inner end of the core 6 is fitted to fix and hold the core 6, and a valve body. A valve body holding portion 19, which is provided with a head insertion hole 20, and holds the valve body 32 in a fixed manner by fitting the head portion of a valve body 32 of the valve mechanism therein, a core holding portion 17, and a valve body holding portion. It is located between 19 and is composed of an ink introducing portion 21 for introducing the ink in the ink storing portion 10 of the mouse inner 3 into the core fitting hole 18. For example, the ink introducing portion 21 is formed by forming cut portions having a fan-shaped cross section at 90-degree intervals, and opening the bottom of each cut portion so as to communicate with the core fitting hole 18 (see FIG. 6).

Usually, the valve body holding portion 19 is formed in a tapered shape, and when the joint 16 is fitted in the mouth inner 3, the tapered valve body holding portion 19 is located in the large diameter portion 12 of the mouth inner 3. .. Therefore, a wide ink storage portion 10 is secured around the valve body holding portion 19 (see FIG. 2). Since the head portion of the valve body 32 is closely fitted in the valve body head insertion hole 20, the ink flowing from the ink storage portion 10 into the ink introduction portion 21 should be guided only to the core insertion hole 18 side. become.

In the illustrated example, the core 6 has an ink bleeding groove 22 radially diverging at its center, but the core 6 is not limited to this, and may be a simple felt core. A stepped portion 23 is formed at the inner end portion of the core 6 inserted into the core insertion hole 18, and the tip of the stepped portion 23 is a reduced diameter portion 24 (see FIGS. 2 and 9). Further, a receiving step 26 for receiving the step portion 23 is formed in the core fitting hole 18, and the inside of the receiving step 26 is reduced in diameter to form a reduced diameter portion 27 (see FIGS. 7 and 9).

Thus, when the core 6 is fitted into the core fitting hole 18, the stepped portion 23 hits the receiving step 26 to prevent further entry, and in this state, the peripheral side surface of the inner end portion of the core 6 and the core fitting hole 18 are inserted. It is designed such that a slight clearance is secured between the inner peripheral surface of the core and the inner end surface of the core 6 and the inner bottom surface of the core fitting hole 18. Further, in this state, the entire small diameter portion 24 does not come into contact with any part within the reduced diameter portion 27, and a minute ink seeping space 28 is formed between the small diameter portion 24 and the inner peripheral surface of the reduced diameter portion 27. Secured.

A valve unit case 4 incorporating a half of the valve mechanism is placed in contact with the inner mouth 3 of the mouth and on the back side thereof. The valve unit case 4 has a top surface opening 31 and a bottom surface opening 32. Inside the valve unit case 4, a valve body 33 for opening and closing the top surface opening 31 and a valve body 33 for constantly closing the top surface opening 31 are provided. One half of the biasing return spring 34 is incorporated. The valve body 33 and the other half of the return spring 34 are incorporated in the end cap 5. The valve body 33 has a top shape, and the tapered surface of the upper surface thereof serves as a valve seat abutting portion, and the upper surface side protruding shaft protruding from the tapered surface is inside the valve body head fitting hole 20 of the valve body holding portion 19 of the joint 16. Then, the valve body head insertion hole 20 is filled.

The bottom surface opening 32 of the valve unit case 4 is in contact with the end cap 5 having a liquid material flow hole 39 for constantly introducing the ink in the liquid material tank shaft 1 into the valve unit case 4. Usually, a plurality of liquid material flow holes 39 are formed so as to surround the support cylinder 40 formed in the center of the end cap 5. The return spring 34 has an upper end surface abutting against a rear surface of a flange portion above the valve body 33, and a lower end portion wound around and supported by a support cylinder 40 of the end cap 5. Further, the lower surface side protruding shaft of the valve element 33 is slidably inserted into the support cylinder 40 of the end cap 5.

The valve body 33 is constantly pushed up by the return spring 34 when there is no load, and its tapered surface abuts the valve seat on the inner edge of the upper surface opening 31 to close the upper surface opening 31 (see FIGS. 2 and 8A), and the return When the core 6 is pushed against the pushing force of the spring 34, the valve body 33 is pushed through the joint 16 and its tapered surface separates from the valve seat at the inner edge of the upper opening 31 to open the upper opening 31 (half open). FIG. 8B showing a state and FIG. 8C showing a fully opened state). By opening the upper surface opening 31 in this way, the ink stored in the valve unit case 4 flows through the upper surface opening 31 to the ink storage portion 10 to fill the same, and from there, the joint 16 It flows into the ink introducing section 21.

In the case of the valve-type liquid material exuding device according to the present invention having the above-described configuration, the valve element 33 is pressed by the return spring 34 when the core 6 shown in FIGS. 1, 2 and 8(A) is not pressed. As a result, the upper surface opening 31 of the valve unit case 4 is closed, so that it flows into the end cap 5 and the valve unit case 4 from the liquid material tank shaft 1 through the liquid material flow hole 39 of the end cap 5. The ink is retained there and does not move to the ink reservoir 10.

At that time, the lead holding portion 17 of the joint 16 is located on the tip side of the annular seal portion 15, and a slight ventilation gap is generated between the outer peripheral surface of the lead holding portion 17 and the annular seal portion 15 (see FIG. 9), the outside air flowing through the gap between the inner peripheral surface of the core support portion 7 and the outer peripheral surface of the core 6, and the gap between the inner peripheral surface of the small diameter portion 11 and the outer peripheral surface of the core 6, The ink passes through the ventilation gap and enters the ink storage portion 10 to allow the ink to flow from the ink storage portion 10 into the ink introduction portion 21.

As the writing progresses, the ink in the ink storage portion 10 flows into the ink infiltrating space 28 from the ink introducing portion 21 to fill the ink inflowing space 28 as the ink is reduced by the writing, and the ink seepage groove opening to the ink infiltrating space 28. As it enters into 22, it is possible to continue writing. When the core 6 is a felt core, the ink permeates from the entire outer peripheral surface of the small diameter portion 24 facing the ink permeation space 28.

Then, when the core 6 is pushed in for ink replenishment, the valve body 33 is pushed in through the joint 16 to open the upper surface opening 31 of the valve unit case 4, and at the same time, the inside of the valve unit case 4 and the end thereof are opened. The ink that has filled the inside of the cap 5 flows into the ink storage portion 10 and fills it (see FIGS. 8B and 8C). Further, the joint 16 is pushed in with the pushing of the lead 6, the lead holding portion 17 rides on the annular seal portion 15, and the outer peripheral surface of the lead holding portion 17 slides on the annular seal portion 15 to hermetically seal the portion. The watertight seal prevents air and ink from leaking at that portion.

Since the ink is constantly supplied to the core 6 by acting in this way each time the core 6 is pushed in, even in the case of a usage mode such as high-speed writing or high-speed coating liquid, the writing character or the coating liquid portion is smeared. Does not occur. Further, when the valve is opened by pushing the wick 6, the airtightness and the watertightness are secured by the annular seal portion 15 as described above, so that air leakage and ink leakage do not occur at that portion.

The case where the valve type liquid material exuding device according to the present invention is applied to the valve type writing device has been described above, but as described above, in the case of being applied to a cosmetic device or a medical device other than the writing device, and other various coating liquid devices. However, since the configuration and the action and effect are similar to those of the writing instrument, detailed description thereof will be omitted.

The valve-type liquid material exuding tool according to the present invention is as described above, and since the ink storage portion that is wide enough to supply ink to the core is formed, the core is reliably prevented from drying and the writing is performed. There is no risk of blurring of characters or coating liquid, and it is not necessary to frequently open the valve by pushing in the core, and it is possible to prevent early damage to the tip of the core due to frequent operation. Further, when the valve is opened, the airtightness and the watertightness are secured by the annular seal portion, so there is an effect that air leakage and ink leakage do not occur in that portion, and its industrial applicability is great. Is.

1 Liquid Material Tank Shaft 2 Valve Storage Cylinder 3 Mouth Inner 4 Valve Unit Case 5 End Cap 6 Core 7 Core Support 8 Rib 10 Ink Storage 11 Small Diameter 12 Large Diameter
13 Wing Part 14 Step Part 15 Annular Seal 16 Joint 17 Core Holding Part 18 Core Fitting Hole 19 Valve Body Holding Part 20 Valve Body Head Fitting Hole 21 Ink Introducing Section 22 Ink Exuding Groove 23 Step Section 24 Small Diameter Section 26 Receiving Step 27 Reduced diameter portion 28 Ink infiltration space 31 Top opening 32 Bottom opening 33 Valve body 34 Return spring 39 Liquid material flow hole 40 Support cylinder

Claims (4)

A valve housing cylinder fitted to the tip of the liquid material tank shaft, a mouse inner, a valve unit case and an end cap loaded in the valve housing cylinder, the mouth inner and the tip of the valve housing cylinder. And a valve mechanism incorporated from the mouth inner to the end cap,
The mouth inner is composed of a small diameter portion that holds an inner end portion of the core and a large diameter portion that forms an ink storage portion, and an annular seal portion is formed on an inner peripheral surface of the small diameter portion, From the mouth inner to the end cap, a valve body composed of a joint and a valve body having a core holding portion for holding the inner end portion of the core, and the outer peripheral surface of the joint slides in contact with the annular seal portion in the axial direction. The joint is movably loaded, and in the middle of the joint, an ink introducing portion for introducing the ink in the ink storing portion of the mouth inner and guiding it to the inner end portion of the core ,
The outer peripheral surface of the lead holding portion of the joint is axially separated from the annular seal portion when the lead is not pushed, and is in sliding contact with the annular seal portion when the lead is pushed into the airtight/watertight portion. A valve-type liquid material leaching device characterized by achieving a seal . The valve-type liquid material exuding device according to claim 1, wherein the joint is formed separately from the valve body and is integrally joined to the valve body. The valve-type liquid material leaching device according to claim 1, wherein the joint is formed integrally with the valve body. The ink introducing portion is formed by forming cut-off portions having a fan-shaped cross section at 90-degree intervals, opening the bottom of each cut-out portion, and communicating with a core fitting hole for fitting the inner end portion of the core. The valve-type liquid material leaching device according to any one of claims 1 to 3.