JP2019209531A - Aqueous brush pen - Google Patents

Abstract

To provide an aqueous brush pen capable of opening and closing a valve mechanism by a simple operation to fill a water storage part of a hollow cylindrical body with water and easily feed a brush tip part with water.SOLUTION: An aqueous brush pen including a hollow cylindrical body including an opening positioned at a rear end, a water feed hole positioned at a front end and a water storage part positioned between the opening and the water feed hole, an operation part including a valve mechanism freely openable and closable by a knock disposed at the front end, and a brush tip disposed at a front end side of the hollow cylindrical body to feed water from the water storage part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a brush pen that is used by filling a water storage part with water and supplying water to a tip by a simple operation with respect to an operation part at the rear end.

  Conventionally, when painting a picture using a paint such as a water-based colorant, the paint is melted with a special brush, or a plurality of colors are mixed on a palette and applied to drawing paper. When such an operation is performed, water is replenished by filling the container with water in advance and adding this water to the tip of the brush.

  However, since the conventional method is not only complicated to prepare, but it is difficult to draw a picture quickly at a distance or at a destination, and therefore various types of pens that can easily supply water to the tip of the brush are used (for example, Patent Document 1). These water pens store water inside the brush and supply this water to the tip.

JP 2000-1086 A

  However, the paintbrush and the paint set of Patent Document 1 increase the internal pressure of the brush body by compressing the substantially bellows-shaped water supply means arranged at the rear end of the brush with the water filled in the brush body, The water is pushed out from the tip portion and supplied to the tip, and it is difficult to compress and adjust the bellows to supply an appropriate amount of water to the tip. Moreover, in order to fill the inside of the brush body with water, it is necessary to inject water into the inside of the brush body with the aim of the hole at the rear end of the brush body, and the operability cannot be said to be good.

  Accordingly, the present invention has been made in view of the above problems, and is a water pen that can easily open and close the valve mechanism to fill the water storage portion of the hollow cylindrical portion with water, and further supply water to the tip. The purpose is to provide a pen.

In order to solve the above problems, the present invention provides:
A hollow cylinder including an opening located at the rear end, a water passage hole located at the front end, and a water reservoir located between the opening and the water passage hole;
An operation unit having a valve mechanism that can be opened and closed by a knock disposed at the rear end;
A tip for supplying water from the water reservoir, disposed on the tip side of the hollow cylinder,
A brush pen is provided.

  With the brush pen of the present invention having such a configuration, it is possible to open and close the valve mechanism by applying force to the knock disposed at the rear end of the operation unit, and water can be easily filled into the water storage unit. In addition, water can be discharged from the water reservoir and supplied to the tip. In addition, since the water can be supplied to the tip while holding the painting, the operability is excellent. Furthermore, since the water in the water reservoir is discharged to the outside according to the addition time of the force to the knock, the user can supply a desired amount of water to the tip by a simple operation.

  Moreover, in the above-described brush pen of the present invention, it is desirable that the diameter of the water passage hole is in the range of 10% to 40% of the diameter of the water reservoir.

  In the brush pen of the present invention having such a configuration, since air cannot easily enter the water storage part from the water passage hole, if the valve mechanism of the operation part is in the closed state, the water stored in the water storage part is It is possible to suitably prevent water leakage from the water passage hole to the outside.

  In the above-described brush pen of the present invention, it is desirable that the water passage hole and the rear end of the tip are spaced apart in a range of 3 mm to 10 mm.

  In the brush pen of the present invention having such a configuration, since the water passage hole and the rear end of the tip are preferably separated from each other, the tip that is caused by the water located near the water passage hole coming into contact with the rear end of the tip Unintentional supply of water can be prevented.

  In the above-described brush pen of the present invention, in the hollow cylindrical body, a substantially conical portion is provided from the tip toward the rear end, and the water passage hole is provided at the tip of the substantially conical portion. It is desirable to be provided.

  In the brush pen of the present invention having such a configuration, the water hole and the rear end of the tip are physically more reliably separated from each other, so that water located near the water hole comes into contact with the rear end of the tip. It is possible to prevent unintentional supply of water to the resulting tip, and to prevent back flow of water from the tip to the water reservoir.

  By using the above-described brush pen of the present invention, a valve pen can be opened and closed with a simple operation to fill the water storage part of the hollow cylindrical part with water, and further provide a pen that can easily supply water to the tip. Can do.

It is sectional drawing which shows the outline | summary of the waterbrush pen 1 of this embodiment. 2A and 2B are diagrams showing the structure of the hollow cylinder 3 in FIG. 1, in which FIG. 2A is a cross-sectional view of the hollow cylinder 3 cut in the axial direction X, and FIG. ) Is a side view of the arrow A shown in FIG. 2, and FIG. 2C is a side view of the arrow B shown in FIG. FIG. 3 is a diagram illustrating the structure of the tip fixing tool 21 in FIG. 1, in which FIG. 3A is a cross-sectional view of the tip fixing tool 21 cut in the axial direction X, and FIG. It is a side view of the arrow C shown to). It is a figure which shows the structure of the tip 7 in FIG. 1, Comprising: Fig.4 (a) is sectional drawing of the axial direction X of the tip 7, FIG.4 (b) is arrow D shown to Fig.4 (a). FIG. FIG. 5A is a diagram illustrating the structure of the operation unit 5 in FIG. 1, FIG. 5A is a cross-sectional view of the operation unit 5 in a valve-closed state cut in the axial direction X, and FIG. It is sectional drawing of the operation part 5 of the valve opening state cut | disconnected by X. FIG. FIG. 5 is a schematic diagram illustrating a method for connecting the hollow cylinder 3 and the operation unit 5. FIG. 7A is a diagram illustrating a method of fixing the tip 7 to the hollow cylindrical body 3 using the tip fixing portion 21, and FIG. 7A is a schematic diagram illustrating a state in which the tip 7 is inserted into the tip fixing portion 21; FIG. 7B is a schematic diagram showing a state in which the tip fixing portion 21 through which the tip 7 is inserted is connected to the hollow cylindrical body 3. FIG. 8 (a) is a schematic diagram showing a state in which the tip side F is immersed in water 51 by removing the tip 7 from the hollow cylinder 3, FIG. 8B is a schematic diagram showing a state in which the water reservoir 9 is filled with water 51. FIG. 9A is a schematic diagram showing a state in which the tip 7 is fixed to the distal end side F of the hollow cylindrical body 3 filled with water 51. FIG. FIG. 9B is a schematic diagram illustrating a state in which a force is applied to the knock 11 of the operation unit 5 and water 51 is supplied to the tip 7. FIG. 10A is a view showing the structure of the hollow cylinder 103, FIG. 10A is a cross-sectional view of the hollow cylinder 103 cut in the axial direction X, and FIG. 10B is shown in FIG. FIG. 10C is a side view of the arrow E, and FIG. 10C is a side view of the arrow F shown in FIG. It is a figure which shows the structure of packing 44, Comprising: Fig.11 (a) is a top view seen from the tip 7 side of packing 44, FIG.11 (b) is the arrow E shown to Fig.11 (a). It is sectional drawing.

  Hereinafter, with reference to the drawings, a representative embodiment of a pen according to the present invention will be described in detail. However, the present invention is not limited to what is shown in the drawings, and each drawing is for conceptual description of the present invention, and therefore, ratios and numbers are exaggerated or simplified as necessary for easy understanding. In some cases, it is expressed in a form. Further, in the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant description may be omitted.

1. Outline of the Waterbrush Pen 1 The outline of the waterbrush pen 1 according to the present embodiment will be described with reference to FIG. FIG. 1 is a cross-sectional view showing an outline of the brush pen 1 of the present embodiment. The brush pen 1 includes a hollow cylindrical body 3, an operation unit 5, and a tip 7. Fill the water storage part 9 inside the hollow cylinder 3 with water 51, and allow the water 51 to permeate the tip 7 as appropriate by a simple operation of the operation part 5, for example, dissolve water-based colorant easily and draw a watercolor etc. Can do.

  Of course, the water pen 1 can be used for writing characters on a water brush paper (including a paper half paper). Moreover, the water 51 in this embodiment should just be general tap water, and may be the aqueous paint containing an aqueous coloring agent etc. As described above, the pen 1 of the present embodiment is a very convenient drawing material.

2. Structure of water pen 1 <Structure of water pen 1>
Next, the structure of the pen 1 will be described in detail. As shown in FIG. 1, the pen 1 according to the present embodiment is arranged at the rear end of the hollow cylinder 3 that stores water 51 in the pen body and the hollow cylinder 3 so that the user can perform a water discharge operation of the water 51. The operation part 5 to be performed, the tip 7 which is disposed at the tip of the hollow cylinder 3 and receives the supply of water 51 and applies an aqueous colorant or the like to paper, and the tip fixing tool for fixing the tip 7 to the hollow cylinder 3 21 is composed of approximately four parts. As shown in FIG. 1, in this embodiment, the axial direction of the brush pen 1 is represented by X, the front end side in the axial direction is F, and the rear end side is R.

<Structure of hollow cylinder 3>
Next, the structure of the hollow cylinder 3 will be described in detail with reference to FIGS. 2 (a), 2 (b), and 2 (c). 2A, 2B, and 2C are views showing the structure of the hollow cylinder 3, and FIG. 2A is a cross-sectional view of the hollow cylinder 3 cut in the axial direction X. FIG. 2 (b) is a side view of the arrow A shown in FIG. 2 (a), and FIG. 2 (c) is a side view of the arrow B shown in FIG. 2 (a). The hollow cylinder 3 is a main body of the pen 1, and other parts are disposed on the hollow cylinder 3. Further, the user holds the hollow cylinder 3 and performs an operation.

  As shown in FIGS. 2A, 2B, and 2C, the hollow cylindrical body 3 is a part formed in a substantially cylindrical shape having a predetermined length using a resin or the like. In this embodiment, the cross-sectional shape is formed in a substantially circular shape, but is not necessarily limited to this, for example, a shape having a polygon or a curved portion based on ergonomics in order to improve the gripping property of the user It may be. Further, the hollow cylinder 3 includes a hollow water storage portion 9 inside, and a predetermined amount of water 51 can be stored in the water storage portion 9.

  The hollow cylinder 3 includes an opening 19 located on the rear end side R, a water passage hole 15 located on the front end side F, and a water reservoir 9 located between the opening 19 and the water passage hole 15. More specifically, the front end side F is formed with a front end edge 27 formed substantially orthogonal to the axial direction X, and the front end edge 27 contacts the tip 7. In addition, the inner edge of the leading edge 27 is formed with a substantially conical portion 17 that protrudes into the rear end R while reducing the diameter (that is, from the leading edge toward the trailing edge). Further, a substantially circular water passage hole 15 is formed at the end center (tip) facing the rear end side R of the substantially conical portion 17, and the tip side F is formed through the water passage hole 15. The outside communicates with the water storage unit 9. The substantially conical portion 17 may be a separate component from the hollow cylindrical body 3 and may be structured so as to be integrated with the hollow cylindrical body 3 by assembling. May be provided with a substantially cylindrical portion.

  The substantially conical portion 17 is desirably formed such that the distance D1 in the axial direction X between the tip edge 27 and the water passage hole 15 is in the range of 1 mm to 10 mm (more preferably 3 mm to 10 mm). Thereby, when the tip 7 is connected to the hollow cylinder 3, the rear end of the tip 7 and the water passage hole 15 are suitably separated from each other, and the water 51 stored in the water storage unit 9 is at the rear end of the tip 7. Since there is no direct contact, unintended supply of water 51 to the tip 7 and backflow of the water 51 from the tip 7 to the water storage unit 9 can be prevented. When the tip 7 is viewed from the water storage unit 9, the water storage unit is positioned on the tip side F of the water storage unit 9, and it is possible to prevent excessive supply of water to the tip 7.

  Further, a first step 23 for reducing the outer diameter by a predetermined amount is formed on the distal end side F of the hollow cylinder 3, and is fitted with the tip fixing tool 21 used when connecting the tip 7 to the hollow cylinder 3. Match. What is necessary is just to determine suitably the height dimension and length dimension of the 1st level | step difference 23 according to the dimension of each part of the tip fixing tool 21. FIG.

  An opening 19 is formed on the rear end side R, and the outside of the rear end side R communicates with the water storage portion 9 through the opening 19. Further, a second step 25 is formed on the rear end side R of the hollow cylindrical body 3 to widen the inner diameter of the water storage portion 9 by a predetermined amount, and the operation portion 5 is fitted to the second step 25. The operation unit 5 is connected to the hollow cylinder 3. What is necessary is just to determine suitably the height dimension and length dimension of the 2nd level | step difference 25 according to the dimension of each part of the operation part 5. FIG.

  The water storage portion 9 formed inside the hollow cylindrical body 3 is formed from the front end side F to the rear end side R. As described above, the front end side F communicates with the outside through the water passage hole 15, and the rear The end side R communicates with the outside through the opening 19. In addition, it is desirable that the diameter θ2 of the water storage unit 9 be approximately the same size at any position other than the portion of the second step 25 on the rear end side R.

  The diameter θ1 of the water passage hole 15 is desirably formed in the range of 10% to 40%, more preferably in the range of 10% to 30%, of the diameter θ2 of the water reservoir 9. Thereby, since air cannot easily enter the water reservoir 9 from the water passage hole 15, the water 51 stored in the water reservoir 9 is transferred from the water hole 15 to the outside if the operation unit 5 is closed. Water leakage can be suitably prevented. In this embodiment, the diameter θ2 of the water reservoir 9 is 8.5 mm, and the diameter θ1 of the water passage 15 is formed in the range of 2.5 to 3 mm (more preferably 2.5 mm). Thus, leakage of the water 51 from the water storage unit 9 to the outside is completely prevented.

<Structure of the tip fixing tool 21>
Next, the structure of the tip fixing tool 21 will be described in detail with reference to FIGS. 3 (a) and 3 (b). 3A and 3B are views showing the structure of the tip fixing tool 21, and FIG. 3A is a cross-sectional view of the tip fixing tool 21 cut in the axial direction X. FIG. FIG. 3B is a side view of the arrow C shown in FIG. The tip fixing tool 21 is a component for fixing the tip 7 to the tip side F of the hollow cylinder 3.

  As shown in FIGS. 3A and 3B, the tip fixing tool 21 is a part made of resin or the like in a substantially cylindrical shape, and the insertion hole 31 through which the tip 7 is passed to the tip side F and the tip 7 are hollow cylinders. A fixing rib 29 is formed to be pressed toward the body 3 side. Further, a fixed opening 33 is formed on the rear end side R so as to be inserted into the front end side F of the hollow cylindrical body 3 and fitted with the first step 23. In addition, it is desirable to determine suitably the internal diameter of the tip fixing tool 21 according to the diameter of the hollow cylinder 3, and the diameter of the 1st level | step difference 23 so that both components may fit appropriately.

<Structure of the tip 7>
Next, the structure of the tip 7 will be described in detail with reference to FIGS. 4 (a) and 4 (b). 4 (a) and 4 (b) are diagrams showing the structure of the tip 7; FIG. 4 (a) is a cross-sectional view of the tip 7 in the axial direction X, and FIG. It is a side view of the arrow D shown to (a). The tip 7 is a component that is disposed in the hollow cylindrical body 3 and applies a water colorant or the like to paper while being supplied with water 51.

  The tip 7 is disposed on the distal end side F of the hollow cylindrical body 3 and is for supplying water from the water storage unit 9 and is made of natural fibers such as chemical fibers or animal body hairs. It is. As shown in FIGS. 4A and 4B, the brush tip is formed from the rear end side R toward the front end side F, and has a general tip shape of a brush used for painting, calligraphy, and the like. . Further, on the rear end side R, a smooth portion 35 that abuts on the front end edge 27 of the hollow cylinder 3 is formed.

  As shown in FIG. 4B, the smooth portion 35 has a substantially circular planar shape, and is formed with a diameter that is approximately the same size as the inner diameter of the tip fixing tool 21. Thereby, when the tip 7 is fixed to the hollow cylinder 3 using the tip fixing tool 21, only the tip of the tip 7 protrudes outside from the insertion hole 31 of the tip fixing tool 21, and the smooth portion 35 is hollow with the fixing rib 29. The tip 7 can be firmly fixed to the hollow cylinder 3 by being sandwiched between the tip edge 27 of the cylinder 3.

  As with the tip of a general brush, the tip 7 has a configuration in which, for example, synthetic resin bristles are bundled and the vicinity of the root is melted and solidified by heating, and the rear end R (particularly the smooth portion 35) has a ridge. Alternatively, the rear shape R (particularly, the smooth portion 35) may be solidified by adjusting the overall shape with a paste made of a natural material such as starch or a water-soluble synthetic resin. In addition, the dimension of each part of the tip 7 except the smooth part 35 can be arbitrarily determined according to the use (for thick drawing, for thin drawing, etc.) of the brush pen 1.

<Structure of packing 44>
Next, the structure of the packing 44 will be described in detail with reference to FIG. 11 (a) and 11 (b) are diagrams showing the structure of the packing 44. FIG. 11 (a) is a plan view seen from the tip 7 side of the packing 44, and FIG. It is sectional drawing of the arrow E shown to Fig.11 (a). The packing 44 is a part that abuts against the smooth portion 35 of the tip 7 and assists the movement of water 51 and air between the hollow cylinder 3 and the tip 7.

  The packing 44 is a substantially annular part made of, for example, a resin. As shown in FIGS. 11A and 11B, the packing 44 generally has a top surface 46 that contacts the hollow cylindrical body 3, a tip 7, A bottom surface 45 in contact with each other, a through hole 47 that communicates the top surface 46 and the bottom surface 45, and a slit 48 that communicates the bottom surface 45, the through hole 47, and the side surface are provided.

  What is necessary is just to determine suitably the size of each part of the packing 44 according to the size of the smooth part 35 of the tip 7, and the size of the hollow cylinder 3 in the range which does not impair the effect of this invention. However, in the present embodiment, the configuration provided with the packing 44 is described as a representative. However, the brush pen according to the present invention may have a configuration in which the packing 44 is omitted.

<Structure of operation unit 5>
Next, the structure of the operation unit 5 will be described in detail with reference to FIGS. FIGS. 5A and 5B are views showing the structure of the operation unit 5, and FIG. 5A is a cross-sectional view of the operation unit 5 in the valve-closed state cut in the axial direction X. FIG. 5B is a cross-sectional view of the operation portion 5 in the valve open state cut in the axial direction X. The operation unit 5 is disposed in the opening 19 located at the rear end of the hollow cylindrical body 3 and has a valve mechanism that can be opened and closed by knocking, and serves as an air valve on the rear end side R of the water storage unit 9. It is a part to bear.

  As shown in FIGS. 5A and 5B, the operation unit 5 is a knock 11 that is operated by being directly pressed by a user, and a valve that is configured to be switchable between a valve opening state and a valve closing state by the operation of the knock 11. And a mechanism 13. Further, the valve mechanism 13 is connected to the first part 13A having an air hole 39 communicating the front end side F and the rear end side R, and the front end side F of the knock 11, and the air hole 39 of the first part 13A. And a second part 13B that opens and closes the valve in the axial direction X.

  As described above, the first part 13 </ b> A is substantially cylindrical and has an air hole 39 inside, and the second part 13 </ b> B is inserted into the air hole 39. The front end side F of the second component 13B is similar to the shape of the front end side F of the air hole 39, and is preferably formed with a size larger than that of the front end side F of the air hole 39. In addition, a spring 41 that expands and contracts in the axial direction X is provided inside the knock 11, and the front end side F of the spring 41 is in contact with the rear end side R of the first component 13 </ b> A.

  Since the operation unit 5 includes the valve mechanism 13 having the above-described structure, the second part 13B moves to the rear end side R in a state where no force is applied to the knock 11, so that the air hole 39 of the first part 13A The second part 13B is fitted and the operation unit 5 is closed. In addition, in the state where force is applied to the knock 11, the second part 13 </ b> B moves to the front end side F, so that the second part 13 </ b> B moves to the front end side F and the engagement with the air hole 39 is released, and the operation unit 5. Is opened.

  In the present embodiment, the operation unit 5 having the above-described structure is used. However, the present invention is not necessarily limited to this, and other structures may be used as long as the structure has substantially the same mechanism as the above-described valve mechanism 13. An operation unit provided may be used.

  The first part 13 </ b> A includes an annular rib 43 at the edge, and the annular rib 43 engages with the second step 25 of the hollow cylinder 3 so that the operation unit 5 is connected to the hollow cylinder 3. Even if a force is applied to the knock 11, the first part 13 </ b> A is fixed by the annular rib 43, so that only the second part 13 </ b> B can be moved in the axial direction X.

<Assembly of each part>
Next, the method for assembling the components described above will be described in detail with reference to FIG. 6 and FIGS. 7 (a) and 7 (b). FIG. 6 is a schematic diagram illustrating a method for connecting the hollow cylinder 3 and the operation unit 5. FIGS. 7A and 7B are views showing a method of fixing the tip 7 to the hollow cylindrical body 3 using the tip fixing portion 21, and FIG. 7A shows the tip 7 on the tip fixing portion 21. FIG. 7B is a schematic diagram showing a state in which the tip fixing part 21 through which the tip 7 is inserted is connected to the hollow cylindrical body 3.

  First, the operation part 5 is connected to the rear end side R of the hollow cylinder 3. As shown in FIG. 6, the hollow cylinder 3 and the operation unit 5 are arranged in the axial direction X, and are arranged so that the valve mechanism 13 of the operation unit 5 faces the opening 19 of the hollow cylinder 3. Next, the valve mechanism 13 of the operation unit 5 is inserted from the opening 19 of the hollow cylinder 3, and the annular rib 43 of the first component 13 </ b> A is securely locked to the second step 25.

  Subsequently, the tip 7 and the tip fixing tool 21 are connected to the distal end side F of the hollow cylinder 3. As shown in FIG. 7A, the tip 7 and the tip fixture 21 are arranged in the axial direction X, the tip 7 is inserted from the fixing opening 33 of the tip fixture 21, and the tip side F of the tip 7 is inserted from the insertion hole 31. Insert outside. Next, as shown in FIG. 7B, the packing 44 is inserted into the fixing opening 33 of the tip fixing tool 21, and the distal end side F of the hollow cylindrical portion 3 is further inserted. While fitting the inner diameter of the tip fixing tool 21 and the outer diameter of the first step 23 of the hollow cylindrical portion 3, the tip of the tip fixing tool 21 inside the fixing rib 29 and the tip edge 27 of the hollow cylindrical body 3 The tip 7 is fixed to the distal end side F of the hollow cylinder 3 by sandwiching the 7 smoothing portions 35. The packing 44 abuts the bottom surface 45 on the smooth portion 35 of the tip 7 and abuts the top surface 46 on the tip side F of the hollow cylinder 3.

3. Next, the usage method of the waterbrush pen 1 of this embodiment is demonstrated in detail using Fig.8 (a) and (b) and FIG.9 (a) and (b). FIGS. 8A and 8B are diagrams showing a method of using the brush pen 1 of the present embodiment. FIG. 8A shows the tip side of the water 51 with the tip 7 removed from the hollow cylinder 3. FIG. 8B is a schematic diagram illustrating a state in which the water storage unit 9 is filled with water 51. FIG.

  9 (a) and 9 (b) are diagrams showing how to use the brush pen 1 of the present embodiment, and FIG. 9 (a) shows the front end side F of the hollow cylinder 3 filled with water 51. FIG. 9B is a schematic diagram showing a state in which water 51 is supplied to the tip 7 by applying a force to the knock 11 of the operation unit 5. In this description, the water pen pen 1 is filled with water 51 contained in the container 53.

  As shown in FIG. 8A, first, the tip 7 and the tip fixing tool 21 are removed from the hollow cylinder 3 of the pen 1, and a force is applied to the knock 11 of the operation unit 5 to open the valve mechanism 13. Then, the front end F of the hollow cylinder 3 is inserted into the container 53. Subsequently, as shown in FIG. 8B, after confirming that the water storage portion 9 of the hollow cylinder 3 is filled with the water 51 in the container 53, the application of force to the knock 11 is stopped and the valve mechanism is stopped. After the valve 13 is closed, the hollow cylinder 3 is gradually pulled upward from the container 53.

  As shown in FIG. 9 (a), the valve mechanism 13 remains inside the water storage portion 9 of the hollow cylinder 3 filled with water 51, and in this state, the tip 7 and the tip fixing tool 21 are attached to the hollow cylinder. Connect to the tip F of the body 3. By completing all the above procedures, the preparation for using the pen 1 of the present embodiment is completed. As shown in FIG. 9B, the valve mechanism 13 is opened again by applying a force to the knock 11, so that the water 51 filled in the water reservoir 9 is discharged from the water passage hole 15 to the outside. The water can be drained and supplied to the tip 7 for use.

  In the waterbrush pen 1 having such a configuration, the water 51 headed from the water passage hole 15 to the tip 7 first hits the smooth portion 35, and from the slit 48 of the packing 44 to the tip 7 through the inner wall of the fixing rib 29, Furthermore, it is included in the entire tip 7 from the base of the tip 7 toward the tip. At this time, the exchange of air and water 51 can be suitably performed, and the water 51 can be smoothly supplied to the tip 7. As described above, the pen 1 does not necessarily have the packing 44. When the packing 44 is omitted, the water 51 that has passed through the water passage hole 15 comes into contact with the entire smooth portion 35 of the tip, and the tip. It is included in 7 and heads to the tip.

  From the structure of the valve mechanism 13, the water 51 in the water reservoir 9 is discharged to the outside according to the addition time of the force to the knock 11 (valve opening time). A desired amount of water 51 can be supplied.

  The exemplary embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to these embodiments, and does not depart from the spirit and teaching of the claims. There are other improvements and variations in scope. All such improvements and modifications are included in the technical scope of the present invention.

  For example, the modification comprised using the hollow cylinder 103 as shown in FIG. 10 can be considered. 10A, 10B, and 10C are views showing the structure of the hollow cylinder 103, and FIG. 10A is a cross-sectional view of the hollow cylinder 103 cut in the axial direction X. FIG. 10 (b) is a side view of the arrow E shown in FIG. 10 (a), and FIG. 10 (c) is a side view of the arrow F shown in FIG. 10 (a). In the hollow cylinder 103 used in the modification, the tip can be directly supported by the hollow cylinder 103 without using other parts (the tip fixing tool 21 in the above-described pen 1).

  As shown in FIGS. 10A, 10B, and 10C, the hollow cylindrical body 103 has a tip support hole 104 on the front end side F, and a wall portion 117 is formed on the innermost side (rear end side R). ing. Further, a water passage hole 115 is formed at substantially the center of the wall portion 117, and the water 51 filled in the water storage portion 109 can be discharged outside the distal end side F. The diameter θ10 of the water passage hole 115 is preferably formed in the range of 10% to 40% (more preferably in the range of 10% to 30%) with respect to the diameter θ20 of the water reservoir 109, and the wall 117 is formed. The thickness dimension D10 is desirably formed in a range of 1 mm to 10 mm (more preferably in a range of 3 mm to 10 mm). Further, the separation distance from the distal end side F of the hollow cylinder 103 to the wall portion 117 and the diameter of the tip support hole 104 are determined according to the size of the tip to be used.

  The hollow cylindrical body 103 having the above structure can be connected to the tip by inserting the smooth portion of the tip into the tip support hole 104 while facing the rear end side R. Further, by using the hollow cylinder 103, the number of parts can be reduced and the structure can be further simplified. Furthermore, the attachment / detachment of the tip during filling of the water 51 can be simplified.

  The brush pen of the present invention can open and close the valve mechanism with a simple operation to fill the water storage part of the hollow cylindrical part with water, and can easily supply water to the tip.

DESCRIPTION OF SYMBOLS 1 Waterbrush pen 3 Hollow cylinder 5 Operation part 7 Tip 9 Water storage part 11 Knock 13 Valve mechanism 15 Water flow hole 17 Conical part 19 Opening 21 Tip fixing tool 23 1st level | step difference 25 2nd level | step difference 27 Tip edge 29 Fixing rib 31 Insertion hole 33 Fixed opening 35 Smooth part 39 Air hole 41 Spring 43 Toroidal rib 44 Packing 45 Bottom face 46 Top face 47 Through hole 48 Slit 51 Water 53 Container 103 Hollow cylinder 104 Tip support hole 109 Water storage part 115 Water hole 117 Wall portion θ1 Diameter θ2 Diameter θ10 Diameter θ20 Diameter D1 Distance D10 Thickness dimension

Claims (4)

A hollow cylinder including an opening located at the rear end, a water passage hole located at the front end, and a water storage portion located between the opening and the water passage hole;
An operation unit having a valve mechanism that can be opened and closed by a knock disposed at the rear end;
A tip for supplying water from the water reservoir, disposed on the tip side of the hollow cylinder,
A brush pen that features The diameter of the water passage hole is in the range of 10% to 40% of the diameter of the water reservoir,
The waterbrush pen according to claim 1. The water hole and the rear end of the tip are spaced apart in a range of 3 mm to 10 mm;
The waterbrush pen of Claim 1 or 2 characterized by these. In the hollow cylindrical body, a substantially conical portion is provided from the front end toward the rear end, and the water passage hole is provided at a front end of the substantially conical portion,
The waterbrush pen according to any one of claims 1 to 3.