JP7021006B2 - Pen core, nib holding structure, pen holder and writing utensils - Google Patents

Description

The present invention has a pen core and a pen tip holding structure that can form a writing instrument that can be used like a fountain pen by attaching it to a pen tip that is a dip pen that is distributed as a single item, and a pen holder and writing instrument using them. Regarding.

As exemplified by fountain pens and ballpoint pens, writing instruments that are currently widely used can be used for a long time by providing an ink storage unit in the barrel that supplies ink as an integral part or as a separate body from the pen tip. In particular, for fountain pens, the pen tip and barrel can be continuously used by making the ink storage part a replaceable part as a converter or a cartridge (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2016-83891

The above-mentioned conventional writing tools are mainly used for writing, so they are required to form lines with a uniform width. On the other hand, in the fields of painting and other arts, many of them give individuality to drawing for expressive reasons. Therefore, it is required to change the width of the drawn line. Therefore, the brushes and pens used for drawing have various variations having different shapes and mechanisms according to such demands.

However, these writing instruments for art use need to sequentially supply ink and ink from an external inkstone or inkwell independent of the writing instrument, and it is difficult to perform continuous writing for a long time.

The present invention has been made in view of the above problems, for example, a pen core capable of making the pen tip of a dip pen used for art applications suitable for continuous writing for a long time, a pen tip holding structure, and the like. In addition, it is an object of the present invention to provide a pen holder and a writing instrument using them.

In order to achieve the above object, the first aspect of the present invention is a support shaft having a contact surface that is detachably in contact with the surface of the pen tip, and the support positioned at one end of the support shaft. It is provided with a coupling end for detachably connecting the shaft body and the ink container having the storage space for storing the ink.
The contact surface reaches at least the root of a slit formed in the surface of the pen tip in a state of surface contact with the pen tip, and the support shaft body has a bonding end bonded to the ink container. A plurality of communication passages that communicate the accommodation space with the outside in the above-mentioned state, at least one of which is formed on the contact surface, and the other one of them is inside the support shaft. A plurality of communication passages having a cavity formed along the extending direction, a slit or an opening formed in the end face of the joint end, and an opening formed in the other end of the support shaft. The support shaft has a groove formed on the side surface and communicates with any one of the other of the plurality of communication passages, and the support shaft has a surface contact with the pen tip by the contact surface of the support shaft. In this state, the pen core is deformed so that the width of the groove is narrower than that before fixing .

This makes it possible, for example, to configure the pen tip of a dip pen used for art purposes as a writing instrument that receives ink supplied from an ink container, and to make it suitable for continuous writing for a long time.
Furthermore, it is possible to promote the gas-liquid exchange action between the pen core and the ink container to stabilize the amount of ink ejected from the pen tip, which in turn improves the writing comfort and drawing quality of the pen tip as a writing instrument. It is possible to make it.
Further, it is possible to improve the wearability by making the cross-sectional shape of the pen core follow the cross-sectional shape of the pen tip, and obtain a highly versatile writing tool that can be applied to various pen tips having different or different shapes. It becomes possible.

The second side surface of the present invention is a pen core of the first side surface of the present invention in which the tip of the support shaft is curved or bent in a direction away from the central axis thereof.

This makes it possible to improve the adhesion of the contact surface with the pen tip, suppress ink leakage from the pen tip, and obtain a highly reliable writing tool.

The third aspect of the present invention is the pen core of the first or second aspect of the present invention, wherein the support shaft has flexibility in a direction orthogonal to its central axis.

This makes it possible to maintain a good contact state between the surface of the pen tip and the contact surface of the pen core and stabilize the amount of ink ejected from the pen tip, which in turn makes it possible to write comfort as a writing instrument on the pen tip. It is possible to improve the quality of drawn lines.

A fourth aspect of the present invention is a pen provided with a pen core on any one of the first to third sides of the present invention, and a connecting portion for connecting the pen core, the pen tip, and the ink container. This is the holding structure mentioned above.

This makes it possible, for example, to use the tip of a dip pen used for art purposes as a writing instrument that receives ink supplied from an ink container.
The fifth side surface of the present invention includes a support shaft having a contact surface that is detachably in contact with the surface of the pen tip, and a support shaft located at one end of the support shaft and accommodating the support shaft and ink. The support shaft is provided with a coupling end for detachably connecting the ink container having a space, and the support shaft body is a plurality of stations for communicating the storage space and the outside in a state where the bonding end is coupled to the ink container. It has a passage, and the contact surface reaches at least the root of a slit formed in the surface of the pen tip in a state of being in surface contact with the pen tip, and at least one of the plurality of communication passages. Includes a pen core formed on the contact surface and a connecting portion that binds the pen core, the pen tip, and the ink container, and the connecting portion is provided in the extending direction of the support shaft. Along the line, the pen core, the pen tip, and the ink container are joined so that the distance between the pen tip and the pen core can be adjusted and the distance between the pen tip and the ink container is constant. It is a holding structure of the pen tip.
This makes it possible, for example, to configure the pen tip of a dip pen used for art purposes as a writing instrument that receives ink supplied from an ink container, and to make it suitable for continuous writing for a long time.
Further, for example, the pen tip of a dip pen used for art purposes can be used as a writing instrument that receives ink supplied from an ink container.
Furthermore, the pen tip and the pen core are fixed at a desired distance to optimize the contact state between the surface of the pen tip and the contact surface of the pen core to stabilize the ink ejection amount and stabilize the pen tip. It is possible to obtain a writing instrument with improved writing comfort and quality of drawing lines.

The sixth aspect of the present invention is that the joint portion can adjust the distance between the pen tip and the pen core along the extending direction of the support shaft body, and the pen tip and the ink container can be adjusted. It is a holding structure of the pen tip on the fourth or fifth side surface of the present invention that connects the pen core, the pen tip, and the ink container with a constant distance.

As a result, the pen tip and the pen core are fixed at a desired distance, the contact state between the surface of the pen tip and the contact surface of the pen core is optimized, the ink ejection amount is stabilized, and the pen tip is fixed. It is possible to obtain a writing instrument that is stably fixed and has improved writing comfort and drawing quality.

A seventh aspect of the present invention is that the coupling portion fits into an opening communicating with the periphery of the pen tip and the internal space of the ink container and contacts the rear end of the pen tip. It is a holding structure of the pen tip on the sixth side surface.

As a result, a highly versatile writing tool that can be applied to various pen tips with different shapes and drawing line characteristics can be realized with a simple configuration and assembly, and a writing tool that is easy to maintain and inexpensive can be provided. It will be possible.

The eighth aspect of the present invention is that the connecting portion is coupled so that the distance between the pen tip and the pen core can be adjusted along the extending direction of the support shaft, and the pen tip and the pen are connected. The fourth or fourth aspect of the present invention, which connects the pen core, the pen tip, and the ink container so that the distance between the pen tip and the ink container can be adjusted while the core is fixedly coupled. It is a holding structure of the pen tip on the side surface of 5 .

This makes it possible to obtain a writing tool that gives a writing comfort according to the individuality of the user and is particularly suitable for artistic use.

A ninth aspect of the present invention is a holding structure for a pen tip on any of the fourth to eighth aspects of the present invention, wherein the coupling portion is integrally configured with the ink container.

As a result, a highly versatile writing tool that can be applied to various pen tips with different shapes and drawing characteristics is realized with a simpler configuration, and the risk of ink leakage is reduced to improve reliability. It becomes possible.

The tenth aspect of the present invention contains a holding structure of a pen core on any one of the first to third sides of the present invention or a pen tip on any of the fourth to ninth sides of the present invention, and ink. It is a pen holder provided with a barrel capable of accommodating an ink accommodating body having an accommodating space inside.

As a result, it is possible to obtain a highly versatile writing tool that can be used by selectively mounting and using various pen tips having different shapes and drawing characteristics, as well as ink containers that accommodate inks of different colors and types. It will be possible.

The eleventh aspect of the present invention includes a holding structure of a pen core on any one of the first to third sides of the present invention or a pen tip on any of the fourth to ninth sides of the present invention, and a pen tip. , A writing instrument provided with a barrel capable of accommodating an ink accommodating body having an accommodating space for accommodating ink.

This makes it possible to make the tip of a dip pen used for art, for example, suitable for continuous writing for a long time.

The present invention as described above has the effect that the tip of the dip pen can be adapted for continuous writing for a long period of time.

(A) Perspective view showing the configuration of the pen core according to the first embodiment of the present invention (b) The perspective view showing the configuration of the pen core according to the first embodiment of the present invention. (A) Plan view showing the configuration of the pen core according to the first embodiment of the present invention (b) FIG. 2 (a) A arrow view (c) FIG. 2 (a) CC sectional view (d). B arrow view of FIG. 2 (a) Sectional drawing which shows the structure of the holding structure of the pen tip which concerns on Embodiment 1 of this invention. (A) Perspective view showing the configuration of the pen core according to the second embodiment of the present invention (b) The perspective view showing the configuration of the pen core according to the first embodiment of the present invention. (A) Plan view showing the configuration of the pen core according to the second embodiment of the present invention (b) A arrow view (c) of FIG. 5 (a) CC sectional view (d) of FIG. 5 (a). B arrow view of FIG. 5 (a) Sectional drawing which shows the structure of the holding structure of the pen tip which concerns on Embodiment 2 of this invention. (A) A diagram for explaining the action and effect of the pen core according to the second embodiment of the present invention (b) A cross-sectional view for explaining the action and effect of the pen core according to the second embodiment of the present invention (c) The present invention. The figure for demonstrating the action effect of the pen core which concerns on Embodiment 2 of (A) Cross-sectional view showing the structure of the pen tip holding structure according to the third embodiment of the present invention (b) Cross-sectional view showing the structure of the pen tip holding structure according to the third embodiment of the present invention (c) Sectional drawing which shows the structure of the holding structure of the pen tip which concerns on Embodiment 3 of the invention. (A) Cross-sectional view showing the configuration of the pen core according to another embodiment of the present invention (b) Cross-sectional view showing the configuration of the pen core according to another embodiment of the present invention (c) Other of the present invention Back view showing the configuration of the pen core according to the embodiment (A) Cross-sectional view showing the structure of the pen tip holding structure according to another embodiment of the present invention (b) Cross-sectional view showing the structure of the pen tip holding structure according to another embodiment of the present invention. (A) A diagram showing the configuration of a pen holder according to an embodiment of the present invention (b) A diagram showing a configuration of a writing instrument according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
The pen core according to the first embodiment of the present invention is exemplified as a converter for a fountain pen or an ink cartridge by combining the pen nib with a pen tip exemplified by a round pen used by being attached to a pen holder as a dip pen. It realizes a writing tool combined with an ink container.

FIG. 1A is a rear perspective view showing the configuration of the pen core according to the first embodiment of the present invention, and FIG. 1B is a perspective view seen from the front. Here, the front is defined as the tip 2T side of the pen tip 2 shown in FIG. 1A, and the rear is defined as the rear end 2E side of the pen tip 2, respectively.

As shown in FIGS. 1 (a) and 1 (b), in the pen core 1, the main body 10 has oil resistance, water resistance, and constant elasticity, which are exemplified by synthetic resins such as polypropylene, silicone rubber, and polystyrene. It is a member with a substantially cylindrical outer shape, which is made of the material it has and has a hollow inside. The tip of the main body 10 has an end face shape formed by cutting the side surface of the cylindrical shape by a flat surface or a curved surface oblique to the central axis CA, and an opening 10a communicating with the internal cavity is formed, and the rear end 10E has a cylindrical shape. An opening 12a is formed which has an end face shape formed by cutting the side surface of the surface by a plane orthogonal to the central axis CA and communicates with the internal cavity.

Further, a linear concave groove 10b extending from the rear end 10E to the tip 10T is formed on the side surface of the main body portion 10, and a concave groove is formed at a position facing the concave groove 10b with the central axis CA in between. A side slit 10c parallel to the groove 10b is formed. The side slits 10c communicate with the openings 10a and 12a and the internal cavity of the main body 10. The cavity in the main body 10 described above is shown as an internal space 10x in FIGS. 2 and 3 described later.

Next, the pen tip 2 mounted on the pen core 1 will be described with reference to FIG. 1 (a). The pen tip 2 is an example of a so-called round pen, in which a pen body 21 having an arcuate cross-sectional shape including the tip 2T and a fitting portion 22 having an annular cross-sectional shape including the rear end 2E are integrated. On the surface of the pen body 21, a cut 21y extending from the tip 2T toward the center of the surface of the pen body 21 to equally divide the pen body 21 is formed, and the tip of the cut 21y is a hole 21x. It forms a void that spreads in a plane.

The main body 10 of the pen core 1 has an outer diameter substantially equal to or larger than the inner diameter of the fitting portion 22 of the pen tip 2. As a result, the pen tip 2 is detachably fixed to the pen tip 2 by fitting the fitting portion 22 to the main body portion 10 of the pen tip 2, as shown by the arrow D in the drawing.

With the pen core 1 fixed to the pen tip 2, the portion including the rear end 10E of the main body portion 10 protrudes from the fitting portion 22 of the pen tip 2 as a coupling end 11 as shown in FIG. 2A. do. The mating direction may be opposite to that in FIG. 1A, and the pen may be inserted from the pen body 21 side toward the coupling end 11 side. Further, in FIGS. 1 (a) and 1 (b), the boundary between the joint end 11 and the other portion in the main body portion 10 is virtually shown by a broken line.

Next, with reference to FIGS. 2A to 2D, the configuration of the pen core 1 will be further described in a state of being combined with the pen tip 2. In FIG. 2A, the pen core 1 is shown as a state in which the pen tip 2 is transmitted by a dotted line for easy illustration.

As shown in the plan view of FIG. 2A, the pen core 1 and the pen tip 2 are such that the concave groove 10b on the main body 10 of the pen core 1 and the cut portion 21y of the pen tip 2 overlap on the same line. They are combined in a positioned state, whereby the tip 10T of the main body 10 of the pen core 1 is arranged on the cut 21y. The tip 10T may be arranged at least as long as it reaches the edge of the hole 21x, and can be positioned at any position of the cut 21y and the hole 21x.

Next, as shown in FIG. 2B, which is a view taken along the line A of FIG. 2A, the main body portion 10 of the pen core 1 is concentrically circular around the central axis CA passing through the internal space 10x of the pen core 1. The wall body, the pen body 21 of the pen tip 2, and the fitting portion 22 are arranged, and the side surface of the main body portion 10 of the pen core 1 including the concave groove 10b is the pen body of the pen tip 2 as a contact surface CS. Surface contact with the concave side of 21.

Further, as shown in FIGS. 2 (b), 2 (c), which is a cross-sectional view taken along the line CC of FIGS. 2 (b) and 2 (a), and FIG. 2 (d), which is a view taken along the line B of FIG. 2 (a). When the main body portion 10 of the core 1 is fitted to the fitting portion 22 of the pen tip 2 to form a contact surface CS with the pen main body 21, the side slit 10c receives pressure from the fitting portion 22. It is deformed so that the width of is narrowed.

In the above configuration, the pen core 1 corresponds to the pen core of the present invention, and the pen tip 2 corresponds to the pen tip of the present invention. Further, in the pen core 1, the main body 10 corresponds to the support shaft of the present invention, and the coupling end 11 corresponds to the coupling end of the present invention. In the pen tip 2, the combination of the cut portion 21y and the hole portion 21x corresponds to the slit of the present invention.

Further, the contact surface CS corresponds to the contact surface of the present invention, and the paths formed by the concave grooves 10b and the openings 10a and 12a and the internal space 10x correspond to each of the plurality of communication passages of the present invention. Further, the side slit 10c corresponds to the groove portion of the present invention.

The pen core 1 of the first embodiment has the above configuration, and by combining the attached pen tip 2 with an ink container such as an external converter or cartridge, the pen tip can be changed from the ink container to the pen tip. 2 is configured as a writing instrument that receives ink supply to realize long-term writing.

Hereinafter, a further description will be given with reference to FIG. FIG. 3 is a diagram showing a configuration in which a pen core 1 combined with a pen tip 2 shown in FIG. 2A, which is an embodiment of a pen tip holding structure of the present invention, is further combined with an ink container 3. Is. Note that FIG. 3 is a cross-sectional view taken along a plane passing through the central axis CA of the pen core 1 and the concave groove 10b.

As shown in FIG. 3, the ink accommodating body 3 includes a substantially cylindrical accommodating main body 31 having an accommodating space 31x for accommodating ink inside. A packing 32 made of synthetic rubber, synthetic resin, or the like is fixed near the inside of the opening 31y that serves as an ink supply port, and the inner diameter of the inner peripheral surface 31z of the accommodation space 31x is partially reduced to reduce the inner peripheral surface 31z. Gives a step. The inner diameter of the accommodating body 31 and the outer diameter of the fitting portion 22 of the pen tip 2 are substantially equal, and the inner diameter of the packing 32 is defined to be equal to or less than the outer diameter of the coupling end 11 of the pen core 1.

As a result, the ink container 3 and the pen core 1 include the pen tip 2 in a state where the coupling end 11 is fitted to the packing 32 and the fitting portion 22 of the pen tip 2 is fitted to the opening 31y of the storage body 31. And integrally coupled to form the pen tip holding structure 100. In the ink container 3, the structure near the opening 31y and the packing 32 of the container body 31 corresponds to the joint portion of the holding structure of the pen tip of the present invention.

In the pen tip holding structure 100, the storage space 31x of the storage body 31 of the ink storage body 3 has a concave groove 10b extending from the rear end 10E of the coupling end 11 of the pen core 1 to the tip 10T of the main body portion 10 and the coupling end. It communicates with the outside by two independent paths from the opening 12a on the rear end 10E of 11 to the opening 10a via the internal space 10x.

As a result, the ink contained in the ink accommodating body 3 communicates with the opening 10a of the pen core 1 so that the air pressure in the accommodating space 31x is kept the same as the outside air pressure, and the capillary phenomenon occurs. The hole 21x of the pen body 21 of the pen tip 2 is cut through the concave groove 10b of the pen core 1 in the order of splitting 21y and supplied to the tip 2T. As a result, the holding structure 100 of the pen tip functions as a writing instrument that ejects ink by exchanging air and liquid similar to a fountain pen.

In the above configuration, as the pen tip 2 attached to the pen core 1, the pen tip exemplified by the round pen originally attached to the pen holder as a dip pen is used. While pen tips are widely used in the fields of art such as painting and illustration, they cannot be combined with converters and ink cartridges like fountain pens, so it is necessary to sequentially supply ink from an inkwell that is independent of the writing instrument. , It was difficult to write continuously for a long time.

In the pen core 1 of the first embodiment, ink is supplied from the ink container 3 to the pen tip 2 to the pen tip 2 which is the pen tip as described above, and the pen tip 2 is continuously supplied for a long time like a fountain pen. It will be possible to write.

Further, since the pen tip 2 is provided with a structure in which the pen tip 2 is detachably fitted to the pen core 1, the pen tip 2 can be used by exchanging the pen tip 2 with respect to a single pen core. As a result, the pen tip 2 that has deteriorated due to wear, rust, etc. due to long-term use can be easily replaced. As a result, the pen core and pen tip are integrated, and the writing comfort and drawing quality are easier and cheaper on the user side than on the commercial fountain pen, which relies on the manufacturer to repair the pen tip. Can be maintained at.

Further, the pen core 1 of the first embodiment is a communication passage that communicates with the outside in the main body 10 through a path from the opening 12a on the rear end 10E of the coupling end 11 to the opening 10a via the internal space 10x. It is possible to promote the gas-liquid exchange action between the pen tip 2 and the ink container 3 and stabilize the amount of ink ejected from the pen tip 2, and by extension, the pen tip 2 It is possible to improve the writing comfort as a writing instrument and the quality of drawing lines.

Further, the pen core 1 of the first embodiment communicates with the internal space 10x in the main body portion 10 and forms a side slit 10c whose width is narrower than that of the pen core 1 when combined with the pen core 1. It works. That is, even if the pen tip 2 has the same line width, line mode, and other drawing characteristics, the inner diameter of the fitting portion 22 varies depending on the lot or manufacturer due to tolerances, errors, or other causes. There is a risk that the state of attachment with the pen core 1 will not be maintained at a constant quality.

On the other hand, since the pen core 1 of the first embodiment has the above configuration, the main body portion 10 is deformed in the width of the side slit 10c in accordance with the internal shape of the fitting portion 22 of the pen tip 2. It is deformed so that the outer diameter becomes smaller or the cross-sectional area becomes smaller depending on the minute. As a result, the cross-sectional shape of the fitting portion 22 of the pen core 1 can be made to follow the cross-sectional shape of the main body portion 10 of the pen tip 2 to improve the mountability, and the inner diameter of the fitting portion 22 of the pen tip 2 can be improved. It is possible to maintain a stable writing comfort in response to variations in the writing quality. Furthermore, it is possible to obtain a highly versatile writing tool that can be used by replacing various pen tips having different drawing characteristics and cross-sectional shapes.

Further, the pen core 1 of the first embodiment has a pen tip holding structure 100 for binding to the ink container 3, in which the coupling end 11 is fitted to the packing 32 as a coupling portion and the opening 31y of the storage body 31 is formed. The fitting portion 22 of the pen tip 2 is fitted, and the rear end of the fitting portion 22 is in contact with the packing 32, and the pen tip 2 and the pen tip 2 are integrally connected to each other. Play.

That is, in the above configuration, the pen tip 2 and the pen core 1 cut the tip 10T of the pen core 1 into the pen tip 2 and the pen tip 2 along the extending direction of the main body portion 10 parallel to the central axis CA. It is further fitted and fixed to the ink container 3 in a state of being fitted in a state of being adjusted to a desired position of a straight line formed by the hole portion 21x and positioned. This optimizes the amount of ink supplied from the concave groove 10b of the main body 10 to the pen main body 21, and further changes the state of the contact surface CS during writing, that is, the change in the distance between the surface of the pen tip 2 and the pen core 1. And optimize the contact area to stabilize the ink ejection amount.

Further, the movement of the pen tip 2 along the axial direction due to the writing pressure is regulated by the interference with the packing 32 and is stably fixed. These make it possible to obtain a writing instrument with improved writing comfort and drawing quality.

Further, in the above configuration, the pen core 1 and the pen tip 2 can be attached and detached by a simple assembly operation of fitting based on insertion and removal along the central axis CA of the main body 10, and the pen tip can be attached and detached by the user. It is possible to obtain a writing tool that is easy to maintain such as replacement of 2 and cleaning of pen core 1.

Further, since maintenance such as cleaning of the pen core 1 is easy, oil-based ink can be used as the ink to be stored and used in the ink container 3, and the ink can be applied as compared with the fountain pen which mainly uses water-based ink. It is possible to obtain a writing tool having a wide variety of colors and types, particularly suitable for art applications such as paintings.

(Embodiment 2)
The pen core according to the second embodiment of the present invention can be used as a dip pen by being attached to a pen holder as a pen tip, and by combining the pen tip with a pen tip exemplified by a G pen, the pen tip can be used as a converter or ink for a perennial brush. It realizes a writing tool combined with a cartridge.

FIG. 4A is a rear perspective view showing the configuration of the pen core and the pen tip according to the second embodiment of the present invention, and FIG. 4B is a perspective view seen from the front.

As shown in FIG. 4A, the pen core 4 of the second embodiment corresponds to the pen tip 5 exemplified by the so-called G pen. The pen tip 5 includes a pen body 51 having an arcuate cross-sectional shape as a whole including a tip 5T and a rear end 5E. Like the pen tip 2, the pen body 51 has a pen body from the tip 5T on the surface of the pen body 51. A cut 51y that extends toward the center of the surface of the 51 and divides the pen body 51 into equal parts is formed, and the tip of the cut 51y forms a gap that extends in a plane as a hole 51x.

Each part of the pen core 4 of the second embodiment is the same as the pen core 1 of the first embodiment except that each part has a shape and dimensions suitable for the shape and dimensions of the pen tip 5 having the above-mentioned shape. It has a structure and a function, and the corresponding parts are given the same name, and detailed explanations are omitted.

The main body 40 of the pen core 4 forms a side surface that corresponds substantially to the cross-sectional shape of the pen main body 51 of the pen tip 5 or has a different degree of concave curvature. As a result, as shown by the arrow D in the figure, the pen tip 5 brings the pen main body 51 into surface contact with the surface of the main body portion 40 of the pen core 4 which is the side surface of the cylinder. Further, the rear end of the main body 40 is provided with an end surface 42 corresponding to the bottom surface of the cylindrical shape to close the internal cavity, and the end surface 42 is the internal cavity of the main body 40, which is an internal space 40x described later. By forming the end face slit 42a having a predetermined width to communicate with each other, the internal space 40x constitutes a contour along the outer shape of the main body portion 40.

In the above configuration, the paths formed by the concave groove 40b, the opening 40a, the end face slit 42a, and the internal space 40x correspond to each of the plurality of communication passages of the present invention. Further, the combination of the side surface slit 40c and the end surface slit 42a corresponds to the groove portion of the present invention.

In the pen core 4 of the second embodiment having such a configuration, the end surface 42 of the main body portion 40 is in a state where the side surface including the concave groove 40b is in surface contact with the concave surface of the pen tip 5. As shown in FIG. 5A, the portion including the above protrudes from the rear end 5E of the pen body 51 of the pen tip 5 as a coupling end 41. In FIGS. 4 (a) and 4 (b), the boundary between the joint end 41 and the other portion in the main body 40 is virtually shown by a broken line.

Next, with reference to FIGS. 5A to 5D, the configuration of the pen core 4 will be further described in a state of being combined with the pen tip 5. However, in FIG. 5A, the pen core 4 is shown as a state in which the pen tip 5 is transmitted by a dotted line for the sake of easy illustration.

As shown in the plan view of FIG. 5A, as in the first embodiment, the pen core 4 and the pen tip 5 are a groove 40b on the main body 40 of the pen core 4 and a cut 51y of the pen tip 5. Is positioned so as to overlap on the same line, whereby the tip 40T of the main body 40 of the pen core 4 is arranged on the cut 51y. The tip 40T can be positioned at any position of the cut 51y and the hole 51x as long as it reaches at least the edge of the hole 51x.

Next, FIG. 5 (b) which is an A arrow view of FIG. 5 (a), FIG. 5 (c) which is a CC sectional view of FIG. 5 (a), and FIG. 5 (a) B arrow view. As shown in FIG. 5D, the wall body of the main body 40 of the pen core 4 and the pen main body 51 of the pen tip 5 are concentrically circular around the central axis CA passing through the internal space 40x of the pen core 4. The side surface of the main body 40 of the pen core 4 which is arranged and includes the concave groove 40b is in surface contact with the concave side of the pen main body 51 of the pen tip 5 as the contact surface CS.

Next, FIG. 6 shows a configuration in which the pen core 4 combined with the pen tip 5 shown in FIG. 5A, which is an embodiment of the holding structure of the pen tip of the present invention, is further combined with the ink container 3. It is a cross-sectional view by the plane which passes through the central axis CA of the pen core 4. However, the same or equivalent configurations as those shown in FIG. 3 are designated by the same reference numerals and detailed description thereof will be omitted. The curvature of the outer diameter of the opening 31y of the accommodating main body 31 and the outer diameter of the outer diameter of the pen main body 51 of the pen tip 5 are substantially equal, and the inner diameter of the packing 32 is set to be equal to or less than the outer diameter of the connecting end 41 of the pen core 4.

As a result, in the ink container 3 and the pen core 4, the coupling end 41 is fitted to the packing 32, and the rear end 5E of the pen body 51 of the pen tip 5 is fitted to the opening 31y of the storage body 31 and the packing 32. The pen tip 5 and the pen tip 5 are integrally connected to each other in contact with the pen tip to form the pen tip holding structure 200.

In the pen tip holding structure 200, the storage space 31x of the storage body 31 of the ink storage body 3 has a concave groove 40b extending from the coupling end 41 of the pen core 4 to the tip 40T of the main body 40, and an end surface 42 of the coupling end 41. It communicates with the outside by two independent paths from the upper end face slit 42a to the opening 40a via the internal space 40x.

Since the pen core 4 of the second embodiment has the above configuration, the attached pen tip 5 is combined with an ink container such as an external converter or a cartridge as in the first embodiment. , It is configured as a writing instrument that receives ink from the ink container to the pen tip 5, and realizes long-term writing. Further, it exhibits various effects similar to those of the pen core 1 and the pen tip holding structure 100 of the first embodiment.

Further, in the main body portion 40, the pen core 4 of the second embodiment has a communication passage for communicating the storage space 31x of the storage body 31 of the ink storage body 3 and the outside along the central axis CA by the side slit 40c. The following effects are further obtained by forming the internal space 40x having a contour along the outer shape of the main body 40 by being formed and partially closed by the end face 42.

That is, the main body portion 40 has the above-mentioned configuration, so that the wall body becomes thin and an open cross section is formed, so that the main body portion 40 is on a plane orthogonal to the central axis CA shown in FIGS. 5 (b) to 5 (d). It is flexible and easily deformed to the extent that the cross-sectional shape has a certain restoring force. As a result, as shown in FIG. 7B, which is a plan view of FIG. 7A and a cross-sectional view taken along the line AA of FIG. 7A, the main body portion 40 shown by the broken line in the drawing has a cross-sectional shape. Before mounting on the pen core 4, the pen core 4 has an elliptical shape, an oval shape, or any other shape that is wider than the width of the pen core 4, and as shown in FIG. 7B, the tip 10T has a central axis CA. It can be bent or curved in a direction away from the surface to form a curved shape.

Then, when the main body portion 40 forms the contact surface CS with the concave surface of the pen main body 51 of the pen tip 5, it is narrow and the warp of the tip 10T is restored so as to follow the shape of the concave surface and heads toward the central axis CA. By deforming the pen body 10, the main body 10 comes into pressure contact with the pen body 51 with a certain elasticity. This improves the adhesion between the pen core 4 and the pen tip 5 on the contact surface CS, makes it possible to stabilize the amount of ink ejected from the pen tip, and eventually the contact surface CS with the pen tip during writing. It is possible to improve the stability of the pen tip 5 as a writing tool and the quality of drawing lines.

Further, in the vicinity of the coupling end 41 in the main body portion 40, the internal space 40x is partially closed by the end surface 42, so that the flexibility on the plane orthogonal to the central axis CA is shown in FIGS. 7 (b) and 7 (c). It is smaller than the other parts shown in, and is less likely to be deformed. As a result, a highly reliable writing tool can be obtained by suppressing ink leakage while maintaining a good fitting state with the ink container 3 and improving the adhesion of the pen core 4 and the pen tip 5 on the contact surface CS. It becomes possible.

Further, by providing the slit-shaped end face slit 42a as an opening adjacent to the opening 31y of the storage body 31 of the ink storage body 3, the leakage of ink to the internal space 40x is suppressed, and there is a risk of ink leakage during writing. It is possible to obtain a highly reliable writing instrument with reduced ink.

The shape of the main body 40 shown in FIGS. 7 (a) and 7 (b) may be obtained in advance at the time of manufacturing the pen core 4, or the contact surface shown at the time of manufacturing may be obtained in advance. A shape that can form a CS may be obtained by deformation by an operation on the user side. In particular, in the latter case, it is possible for the user to adjust the ink ejection amount at the time of writing according to the state of the pen tip 5 to adjust the characteristics of the drawn lines, and a writing tool particularly suitable for art applications can be obtained. It becomes possible.

Further, the configurations shown in FIGS. 7A to 7C may be applied to the pen core 1 of the first embodiment, and the same effect can be obtained. Further, the holding structure 200 of the pen tip is assumed to be integrally connected including the pen tip 5 in a state where the rear end 5E of the pen body 51 of the pen tip 5 is in contact with the packing 32, but the rear end 5E is It may be integrally coupled including the pen tip 5 in a state of being separated from the packing 32.

(Embodiment 3)
Embodiment 3 of the present invention is a pen tip holding structure for coupling the pen core 1 or 4 of each of the above embodiments to a converter for a fountain pen or an ink container as an ink cartridge together with the pen tip.

Hereinafter, description will be given with reference to FIGS. 8 (a) and 8 (b). Each figure of FIG. 8 corresponds to FIGS. 3 and 5, and is a cross-sectional view showing a main part of the holding structure of the pen tip of the third embodiment by a plane passing through the central axis CA of the pen core 1 and the concave groove 10b. Is. However, the pen core 1 and the pen tip 2 show the surface, not the cross section.

As shown in FIG. 8A, the pen tip holding structure 300 of the third embodiment has the pen core 1 of the first embodiment and the intermediate connector 7 coupled to the ink container 6 exemplified by the converter. Be prepared.

The ink accommodating body 6 includes a substantially cylindrical accommodating main body 60 having a substantially cylindrical accommodating space 60x for accommodating ink, and an opening 60y serving as an ink supply port is coaxial with the accommodating main body 60 and is outside. By forming the opening end 61 having a smaller diameter, there is a step in the outer shape, and the pen tip 2 does not fit into the fitting portion 22 as it is.

The intermediate connector 7 mainly includes a main body 70 made of a resin or metal material having a substantially cylindrical outer shape like the main body 10 of the pen core 1, and has an extension direction in the main body 70. An inner peripheral surface 71 having an outer diameter equal to or smaller than the outer diameter of the coupling end 11 of the pen core 1 formed along the above is formed. At the openings at both ends of the inner peripheral surface 71, one end connected to the ink container 6 has an outer diameter corresponding to the shape of the opening end 61 of the ink container 6, and the opening end 61 is fitted and contacts with the outer diameter. The inner cylinder end 72 is formed. Further, the other end connected to the pen tip 2 is formed with an inner cylinder end 73 for fitting the fitting portion 22 of the pen tip 2 and for contacting the rear end 2E.

As a result, the ink accommodating body 6 and the pen core 1 and the pen tip 2 are fitted with the connecting end 11 of the pen core on the inner peripheral surface 71 of the main body 70 via the intermediate connector 7, and the accommodating main body 60 The opening end 61 of the pen tip is fitted to the inner cylinder end 72, and the fitting portion 22 of the pen tip 2 is in contact with the inner cylinder end 73, and is integrally connected to the pen tip including the pen tip 2. It constitutes a holding structure 300.

Also in the pen tip holding structure 300, as in the pen tip holding structure 100 of the first embodiment, the pen tip 2 and the pen core 1 are positioned at desired positions along the extending direction of the main body portion 10 (not shown). In the state of being fitted in the state of being fitted, the intermediate connector 7 is further fitted.

As a result, the amount of ink supplied from the ink container 6 to the pen tip 2 is optimized, the state of the contact surface between the pen core 1 and the pen tip 2 during writing is optimized, and the ink ejection amount is stabilized. A simple writing tool that regulates the movement of the pen tip 2 along the axial direction due to pen pressure by interference with the inner cylinder end 73, stabilizes the writing state, and improves the writing comfort and the quality of drawing lines. It can be realized by configuration and assembly. Further, as in the pen tip holding structure 100 of the first embodiment, the pen core 1 and the pen tip 2 can be attached / detached by a simple assembly operation of fitting based on insertion / removal along the central axis CA of the main body portion 10. It is possible to obtain a writing tool that can be easily maintained by the user, such as replacing the pen tip 2 and cleaning the pen core 1, and has a wide range of applicable ink colors and types, especially for art applications such as painting. Is possible.

Next, as shown in FIG. 8B, the pen tip holding structure 400, which is another example of the third embodiment, has the pen core 1 of the first embodiment and the ink container 8 exemplified for the converter. It is provided with an intermediate connector 9 for connecting to and.

The ink accommodating body 8 includes a substantially cylindrical accommodating main body 80 having a substantially cylindrical accommodating space 80x for accommodating ink, and an opening 80y serving as an ink supply port is coaxial with the accommodating space 80x and is outside. By forming an opening end 81 whose diameter is larger than the outer diameters of the pen tip 2 and the pen core 1, the contour on the inner peripheral side has a step, and the pen tip 2 is fitted into the fitting portion 22 as it is. It doesn't fit.

Similar to the main body 10 of the pen core 1, the intermediate connector 9 includes a main body 90 made of a resin or metal material having a substantially cylindrical outer shape as a main configuration, and extends into the main body 90. An inner peripheral surface 91 having an inner diameter equal to or smaller than the outer diameter of the coupling end 11 of the pen core 1 formed along the direction is formed. One end of the main body 90 connected to the ink container 8 has an outer diameter corresponding to the shape of the open end 81 of the ink container 6 and has an end surface 92 that fits into and contacts the open end 81. Further, the other end connected to the pen tip 2 is formed with an inner cylinder end 93 for fitting the fitting portion 22 of the pen tip 2 and for contacting the rear end 2E.

As a result, the ink accommodating body 8 and the pen core 1 and the pen tip 2 are fitted with the connecting end 11 of the pen core on the inner peripheral surface 91 of the main body 90 via the intermediate connector 9, and the accommodating main body 80 The opening end 81 of the pen tip is fitted to the end surface 92, and the fitting portion 22 of the pen tip 2 is in contact with the inner cylinder end 93, and is integrally connected to the pen tip including the pen tip 2 to hold the pen tip. It constitutes 400.

Even in such a configuration, the pen tip 2 and the pen core 1 are further fitted to the intermediate connector 9 in a state where the pen tip 2 and the pen core 1 are fitted in a state of being positioned at a desired position along the extending direction of the main body portion 10 (not shown). Together, they have the same effect as the pen tip holding structure 300 shown in FIG. 8 (a).

Next, as shown in FIG. 8C, the pen tip holding structure 300A, which is another example of the third embodiment, has the pen core 1 of the first embodiment and the ink container 6A exemplified for the converter. It is provided with an intermediate connector 7A for coupling with.

The ink accommodating body 6A includes a substantially cylindrical accommodating main body 60A having a substantially cylindrical accommodating space 60Ax for accommodating ink, and an opening 60Ay serving as an ink supply port is a pen tip 2 and a pen core 1, respectively. It communicates with the opening end 61A smaller than the outer diameter of the pen tip 2 and does not fit into the fitting portion 22 of the pen tip 2 as it is.

Similar to the main body 10 of the pen core 1, the intermediate connector 7A includes a main body 70A made of a resin or metal material having a substantially cylindrical outer shape as a main configuration, and extends into the main body 70A. An inner peripheral surface 71A having an outer diameter equal to or smaller than the outer diameter of the coupling end 11 of the pen core 1 formed along the direction is formed. One end of the main body 70A connected to the ink container 6A has an outer diameter corresponding to the inner diameter of the opening 60Ay of the ink container 6A and forms a fitting end 72A that fits into the opening 60Ay. Further, the other end connected to the pen tip 2 is formed with an inner cylinder end 73A for fitting the fitting portion 22 of the pen tip 2 and for contacting the rear end 2E. The inner peripheral surface 74A of the fitting end 72A and the inner peripheral surface 71A of the main body 70A are arranged coaxially to form a step.

As a result, the ink container 6A, the pen core 1 and the pen tip 2 are fitted to the inner peripheral surface 71A of the main body 70A via the intermediate connector 7A, and the connecting end 11 of the pen core is fitted to the ink container. The fitting end 72A of the intermediate connector 7A is fitted to the opening 60Ay of the accommodating main body 60A in a state where the main body 70A is in contact with the opening end 61A of 6A, and the fitting portion 22 of the pen tip 2 is in contact with the inner cylinder end 73A. In this state, the pen tip 2 and the pen tip 2 are integrally connected to form the pen tip holding structure 300A.

Even in such a configuration, the pen tip 2 and the pen core 1 are further fitted to the intermediate connector 7A in a state where the pen tip 2 and the pen core 1 are fitted in a state of being positioned at a desired position along the extending direction of the main body portion 10 (not shown). Together, they have the same effect as the pen tip holding structure 300 shown in FIG. 8 (a).

Further, since the intermediate connectors 7, 7A and 9 are made of separate members from the ink accommodating bodies 6, 6A and 8, the shape and dimensions of the ends to be coupled to the ink accommodating bodies 6, 6A and 8 can be changed to the ink accommodating body 6. , 6A, 8 can be determined to fit the shape and dimensions of the vicinity of the openings 60y, 60Ay, 80y. As a result, the pen core 1 can be fitted into a commercially available converter or ink cartridge whose end face shape and inner diameter are different in size from each other and the pen core 1 cannot be fitted as it is. It is possible to easily obtain a writing tool to which the pen core of the present invention is applied. Further, according to the pen tip holding mechanisms 300, 400, and 500 of the third embodiment, the pen core, the pen tip, and the intermediate connector are detachably coupled to the ink container which is a separate component in an integrated state. Can be done. As a result, it is possible to obtain a highly reliable writing instrument in which the alignment of the pen core and the pen tip does not shift when the ink container is replaced, and the writing comfort and the characteristics of drawing lines are not impaired. .. The intermediate connectors 7, 7A and 9 correspond to the coupling portion of the present invention.

On the other hand, when the joint portion of the present invention is integrally configured with the ink container as in the ink container 3 of the first or second embodiment, the number of parts and the number of joint portions are omitted, and the writing tool is simplified. In addition to being realized by the configuration, it is possible to reduce the risk of ink leakage and improve reliability.

In the above description, the configuration is based on the pen core 1 of the first embodiment, but the third embodiment may be applied to the pen core 4 of the second embodiment, and the same is true. It works.

As described above, as described with reference to each embodiment, the present invention can be combined with a pen tip exemplified by a round pen or a G pen used by being attached to a pen holder as a dip pen. A writing tool is realized in which the tip is combined with a converter for a fountain pen or an ink container exemplified for an ink cartridge. This has the effect of making it possible to make the tip of a dip pen used for art, for example, suitable for continuous writing for a long time.

(Other embodiments)
However, the present invention is not limited to each of the above embodiments.

In the above description, the main body 10 of the pen core 1, which corresponds to the support shaft of the present invention, is a member having a substantially cylindrical outer shape, but as shown in FIG. 9A, the contact surface CS On the side surface including the concave groove 10b corresponding to the above, the tip 10T may be curved or bent in a direction away from the central axis CA. As a result, similarly to the pen core 4 of the second embodiment, the contact surface CS including the tip 10T of the pen core 1 and its vicinity are elastically pressed against the pen tip. Therefore, it is possible to obtain a highly reliable writing tool by improving the adhesion of the contact surface CS with the pen tip and suppressing ink leakage from the pen tip.

Further, in the above description, the cavity of the support shaft of the present invention is configured as a cavity along the outer shape of the main body 10 as the internal space 10x or 40x of the main body 10 or 40 of the pen core 1 or 4, and is open. Although it is assumed that it communicates with 12a or is blocked by the end face 42 in which the end face slit 42a is formed, as shown in FIG. 9B, the opening 12b on the coupling end 11 and the opening 10a on the tip 10T side It may be configured as a communicating tubular passage 10y. In particular, since the inner diameter of the communication passage 10y gradually decreases from the opening 10a toward the opening 12b, the wall body near the tip 10T in the main body 10 becomes thinner than the other parts, and comes into surface contact with the pen tip. It becomes easy to bend according to the writing pressure while keeping the state.

This makes it possible to improve the stability of the contact surface CS with the pen tip at the time of writing, and to obtain a writing instrument with improved writing comfort and quality of drawing lines. The continuous passage 10y may have a uniform inner diameter.

Further, in the above description, the side slit 40c communicating with the internal space 40x of the main body 40 has the same width, but as shown in FIG. 9C, the side slit 40c changes wide toward the opening 40a. It may be configured. As a result, the contact portion between the main body portion 10 and the pen main body 51, particularly the contact portion between the hole portion 51x and the vicinity of the cut 51y, is more easily deformed, and the degree of adhesion of the contact surface CS with the pen tip during writing is enhanced. Therefore, it becomes possible to obtain a writing tool with improved writing comfort and quality of drawing lines.

The configurations of FIGS. 9A to 9C may be applied to either the pen core 1 of the first embodiment or the pen core 4 of the second embodiment, either individually or in any combination.

Further, in the above description, the plurality of communication passages of the present invention are the internal space 10x (40x) formed in the concave groove 10b (40b) as the groove portion on the support shaft and the main body portion 10 (40). The route consists of openings 10a (40a) and openings 12a (end face slits 42a), but if the accommodation space and the outside can be communicated with each other while the bonding ends are coupled to the ink container, the number and the specifics The mode is not limited to the above. For example, the communication passage for keeping the atmospheric pressure of the outside air and the pressure in the storage space of the ink container at the same pressure may be a groove formed on the side surface of the main body portion 10 (40), or the ink may be applied to the pen tip 2 (4). ) May be multiple. Further, in the above description, the concave groove 10b (40b) is assumed to reach the tip 10T (40T) of the main body portion 10 (40), but the slit of the pen tip is formed when the pen tip 2 (5) is connected. As long as it overlaps the hole portion 21x (51x) or the slit portion 21y (51y) as the edge, the length may not reach the tip 10T (40T) of the main body portion 10 (40).

Further, in the above description, the end face 42 is configured to communicate the internal space 10x with the outside by the end face slit 42a, but an opening having an arbitrary shape may be provided.

Further, in the above description, the pen tip of the present invention is a round pen or a G pen, but the pen tip of the present invention includes a kabra pen, a school pen, and the like on the contact surface of the support shaft of the pen core. Any type of pen tip may be used as long as it can be detachably contacted with the surface.

Further, in the above description, the pen tip holding structure of the present invention is configured as a pen tip holding structure 100, 200, 300, 300A, 400, and the pen tip and the pen core are used as a support shaft. A state in which the pen tip can be adjusted and positioned at a desired position along the extending direction of the main bodies 10 and 40, and the rear end of the pen tip is the packing 32 as a connecting portion or the inner cylinder end 73 of the intermediate connector 7. However, as in the pen tip holding structure 500 shown in FIG. 10A, the ink accommodating body 8A has an accommodating space formed by a uniform inner peripheral surface 81A having no step. In the case of being configured by the accommodating main body 80A having 80Ax, the fitting portion 22 of the pen tip 2 may be directly fitted to the opening 80Ay.

Further, as in the pen tip holding structure 600 shown in FIG. 10B, the ink accommodating body 8B has an accommodating body 80B having an accommodating space 80Bx in which a step is formed by providing a packing 81C in the inner peripheral surface 81B. In the case of the configuration, the fitting portion 22 of the pen tip 2 may be directly fitted to the packing 81C.

In the case of these configurations, the coupling end 11 of the pen core 1 is indirectly coupled to the ink container 8, and the pen tip can be used as a writing tool more easily. Further, according to this configuration, the pen tip 2 can be moved within the accommodation space 80x even after fitting while maintaining the state in which the pen core 1 and the pen tip 2 are integrated and connected. As a result, the position of the tip 2T of the pen tip 2 can be adjusted, and it becomes possible to obtain a writing tool that gives a writing comfort according to the individuality of the user and is particularly suitable for art use.

Further, the configuration of the joint portion of the holding structures 500 and 600 of the pen tip is different from the configuration near the opening of the ink container as well as the ink container exemplified in the intermediate connectors 7 and 9 of the third embodiment. It may be applied to a joint portion which is a component.

Further, the ink container 8B of FIG. 10B has a packing 81C as a separate component, and the ink container 3 of the first and second embodiments has a packing 32 as a separate component in the storage body 31. However, the shape of the inner peripheral surface that has a different inner diameter on the same axis for the pen tip to fit, or the step near the opening for the rear end of the pen core to come into contact, is the shape of the inner wall of the ink container. It may be realized as a configuration integrated with.

Further, a plurality of packings such as packings 32 and 81C may be provided apart from each other along the extending direction of the accommodation space. This makes it possible to store ink between a plurality of packings and suppress ink leakage. Further, a plurality of convex portions having the same shape as the packing may be provided at a distance from the inner peripheral surface of the ink container, and the same effect can be obtained.

In short, the holding structure of the pen core of the present invention is not limited to other specific configurations as long as the pen core, the pen tip, and the ink container can be coupled.

Further, in the above description, the pen core or the pen tip holding structure of the present invention has been described as an example, but the present invention has been realized as a pen holder provided with the pen core or the pen tip holding structure of the present invention. You may. As an example, FIG. 11A shows a pen holder 110 provided with a barrel 111 capable of detachably accommodating an ink container 3 combined with a pen tip 2 inside. The ink container 3 may not be included in the coaxial 111 in advance. Further, the coaxial 111 may be configured to be used in combination with the ink container having the storage space.

As a result, it is possible to obtain a highly versatile writing tool that can be used by selectively mounting and using various pen tips having different shapes and drawing characteristics, as well as ink containers that accommodate inks of different colors and types. It will be possible.

Further, the present invention may be realized as a writing tool provided with the holding structure of the pen core or the pen tip of the present invention. As an example, in FIG. 11B, a barrel shaft 121 capable of accommodating the pen tip 2 and the ink container 3 combined with the pen core 1 inside, and the pen tip 2 side along the arrow D direction in the figure. A fountain pen-like writing tool 120 equipped with a cap 122 for protecting the pen tip 2 and preventing drying, which is attached to the coaxial 121, is shown.

This makes it possible to make the tip of a dip pen used for art, for example, suitable for continuous writing for a long time. Furthermore, it is possible to obtain a highly versatile writing tool that can be used by selectively attaching and using various pen tips having different shapes and drawing line characteristics, as well as ink containers that accommodate inks of different colors and types. Will be.

In short, the present invention may be carried out as if various modifications were made to the above-described embodiment, including the above-described ones and any combination thereof, as long as the present invention does not deviate from the gist thereof.

The present invention as described above has the effect that, for example, the pen tip of a dip pen used for art applications can be made suitable for continuous writing for a long period of time. It is also useful in pen holders and writing instruments that use them.

1, 4 Pen core 2, 5 Pen tip 3, 6, 8 Ink container 7, 8 Intermediate connector 10, 40, 70, 90 Main body 2E, 5E, 10E Rear end 2T, 5T, 10T, 40T Tip 10a, 12a , 12b, 31y, 40a, 60y, 80y Opening 10b, 40b Concave groove 10c, 40c Side slit 10x, 40x Internal space 10y Linkage 11, 41 Coupling end 42, 92 End face 42a End face slit 21, 51 Pen body 21x, 51x Hole Part 21y, 51y Cut 22 Fitting part 31, 60, 80 Storage body 31x, 60x, 80x Storage space 32 Packing 61, 81 Open end 31z, 71, 81, 91 Inner peripheral surface 72, 73, 93 Inner cylinder end 100, 200, 300, 400, 500 Pen tip holding structure 110 Pen holder 111, 121 Trunk shaft 120 Writing tool

Claims (11)

A support shaft having a contact surface that can be detachably contacted with the surface of the pen tip,
It is provided with a coupling end located at one end of the support shaft body to detachably bond the support shaft body and an ink container having an ink storage space for accommodating ink.
The contact surface reaches at least the root of a slit formed in the surface of the pen tip in a state of surface contact with the pen tip.
The support shaft is
A plurality of communication passages that communicate the storage space with the outside in a state where the bonding end is bonded to the ink container, and at least one of them is formed on the contact surface and the other of them. One of them is formed in the support shaft body, a cavity formed along the extending direction thereof, a slit or an opening formed in the end face of the joint end, and the other end of the support shaft body. With multiple passages with openings,
It has a groove formed on a side surface and communicates with any one of the other of the plurality of communication passages.
The support shaft is
In a state where the contact surface of the support shaft is in surface contact with the pen tip, the width of the groove portion is deformed to be narrower than before fixing.
Pen core. The tip of the support shaft is curved or bent in a direction away from its central axis.
The pen core according to claim 1. The support shaft has flexibility in a direction orthogonal to its central axis.
The pen core according to claim 1 or 2. The pen core according to any one of claims 1 to 3 and
The pen core, the pen tip, and the coupling portion for binding the ink container are provided.
Holding structure of the pen tip. A support shaft having a contact surface that can be detachably contacted with the surface of the pen tip and an ink container that is located at one end of the support shaft and has a storage space for storing ink and the support shaft are attached and detached. The support shaft has a coupling end that is freely coupled, and the support shaft has a plurality of communication passages that communicate the accommodation space and the outside in a state where the coupling end is coupled to the ink container, and the contact surface has a contact surface. The pen tip reaches at least the root of a slit formed in the surface of the pen tip in a state of surface contact with the pen tip, and at least one of the plurality of communication passages is formed on the contact surface. Yes, with a pen nib,
The pen core, the pen tip, and the connecting portion for binding the ink container are provided.
The joint is
The pen core and the pen tip are adjusted so that the distance between the pen tip and the pen core can be adjusted along the extending direction of the support shaft and the distance between the pen tip and the ink container is constant. And the ink container to be bonded.
Holding structure of the pen tip. The joint is
The pen core and the pen tip are adjusted so that the distance between the pen tip and the pen core can be adjusted along the extending direction of the support shaft and the distance between the pen tip and the ink container is constant. And the ink container to be bonded.
The pen tip holding structure according to claim 4 or 5 . The coupling portion fits around the pen tip and in an opening communicating with the storage space of the ink container and contacts the rear end of the pen tip.
The pen tip holding structure according to claim 6 . The joint is
The distance between the pen tip and the pen core is adjustablely coupled along the extending direction of the support shaft, and the pen tip is coupled to the pen tip with a fixed distance. The pen core, the pen tip, and the ink container are coupled so that the distance between the pen core and the ink container can be adjusted.
The pen tip holding structure according to claim 4 or 5 . The joint portion is integrally configured with the ink container.
The pen tip holding structure according to any one of claims 4 to 8 . The holding structure of the pen core according to any one of claims 1 to 3 or the pen tip according to any one of claims 4 to 9 .
It is provided with a barrel capable of accommodating an ink accommodating body having an accommodating space for accommodating ink.
Pen holder. The holding structure of the pen core according to any one of claims 1 to 3 or the pen tip according to any one of claims 4 to 9 .
With the pen tip
It is provided with a barrel capable of accommodating an ink accommodating body having an accommodating space for accommodating ink.
Stationery.

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