JPH0724471U - Fluid supply device for applicator - Google Patents

Abstract

(57) [Summary] [Purpose] When applying or writing on a fluid, it is possible to apply and write on a wide range of the fluid in a constant width and in an appropriate amount. A cylindrical tip shaft 2 having a fluid discharge port 1 at its tip, and a tip end 2 which is elastically bulged and inserted into the tip shaft 2, and
It has an applicator 3 having a part of its tip portion projected from the discharge port 1, and when applying a fluid, the tip shaft 2 is applied to the object to be applied.
In the fluid supply device of the applicator, the tip of the applicator body 3 is brought into contact with the applicator body 3 so that the applicator body 3 is retracted, and the fluid is discharged from the gap around the applicator body 3 at the discharge port 1. Two piece portions 4 are provided on the outer circumference of the tip portion so as to project outwardly of the tip shaft 2 and in mutually opposite directions, and the tip surfaces 4a of the two piece portions 4 are on the same plane. And has a shape in which the major axis direction thereof is substantially along a straight line, and the tip end surface 4a has an end portion of the tip shaft 2 in the outward direction.
A protrusion 5 facing forward is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fluid supply device for an applicator (including a writing instrument for writing with ink) for applying a fluid (including a coating fluid such as a correction fluid and a liquid such as ink) onto an object to be coated. is there.

[0002]

[Prior art]

 The applicator currently used is a correction liquid applicator (correction pen) for applying a correction liquid. Generally, this correction liquid applicator is designed to make the tip of the tip shaft thin to correct erroneous characters as finely as possible. As possible, the applicator within the tip shaft is designed to be very small.

Here, FIG. 7 is a structural example of a fluid supply device provided at the tip of a conventional correction fluid applicator.

As shown in FIG. 7, the correction fluid applicator includes a flexible container main body a (which is schematically shown in the figure) containing a correction liquid, and a correction liquid provided at the tip of the container main body a. And a liquid supply device b.

The correction liquid supply device b mainly has a circular ejection port c opened on a circular tip end surface thereof, and an annular tip end surface around the ejection port c serves as a coating surface d and the ejection port c. A front seat f provided with a valve seat e on the inner surface near the rear and connected to the front of the container body a, and a tip shaft f mounted inside the front shaft f from the discharge port c of the front shaft f. A small-diameter pressing core portion g that slightly protrudes to the outside is provided, and a tapered step portion that can be seated on the valve seat e of the front shaft f at the front end of the large-diameter shaft portion h behind the pressing core portion g. i is provided and is biased forward by a valve spring (valve spring) j so that the tapered stepped portion i is brought into close contact with the valve seat e.

In the correction fluid applicator having the above-mentioned configuration, the tip of the pressing core portion g of the tip of the valve rod k is applied to the paper surface (an example of an object to be coated) to press the applicator (valve rod) k. Is retracted so that the tapered step portion i is separated from the valve seat e. At the same time, the container body b is pressed to allow the correction liquid to flow out (squeeze) from the discharge port c, and the flowing-out correction liquid is spread on the paper surface by the application surface d and applied.

[0007]

[Problems to be solved by the device]

 By the way, in the conventional correction fluid applicator, the tip of the tip shaft f is made thin and the tip of the applicator body k is designed to be very small so that the typographical error can be corrected as finely as possible. Get smaller.

However, if there are many correction parts or large characters to be corrected, the application must be repeated many times, which is troublesome and troublesome.

On the other hand, simply designing the tip of the tip shaft and the tip of the applicator to be large in order to increase the coating width causes the tip shaft and the tip of the applicator to be pressed and moved onto the paper surface (object to be coated). When applying the coating solution, the correction fluid (fluid) stays on the side facing the moving direction of the tip shaft and the coating body, and is transferred to the paper surface while being pushed by the coating body, so the coating width changes depending on the flow-out amount of the fluid body. In addition, since the coating is carried out while staying, there is a problem that the coating amount is not appropriate. Such a problem will occur even in an applicator whose fluid is other than the correction liquid, or in an applicator (writing implement) for a liquid such as ink. Therefore, the conventional fluid supply device for the applicator has a problem that it is not possible to widely apply and write the fluid in a constant width and in an appropriate amount.

The present invention has been made to solve the above-mentioned conventional problems, and the problem is to apply a wide range of fluid in a constant width and in an appropriate amount when applying or writing fluid. An object of the present invention is to provide a fluid supply device for an applicator that enables writing.

[0011]

Means for Solving the Problems To solve the above problems, the present invention has the following configuration. The present invention is directed to a cylindrical tip shaft 2 having a fluid discharge port 1 at its tip, and is elastically inserted into the tip shaft 2 in the forward direction and inserted from the discharge port 1 to a part of the tip. When the fluid is applied, the tip end of the tip shaft 2 and the tip of the applicator 3 are brought into contact with the object to be applied to retract the applicator 3, and In an applicator that causes a fluid to flow out from a gap around the applicator body 3, two pieces 4 are provided on the outer periphery of the tip end portion of the tip shaft 2 in the outward direction of the tip shaft 2 and in mutually opposite directions. The tip surfaces 4a of the two pieces 4 that are provided so as to project are in contact with each other on the same plane, and their major axis directions are substantially linear. A fluid supply device for an applicator, which is characterized in that a projection 5 facing forward is provided at the end of the fluid supply device.

Further, in the present invention, the height of each protrusion 5 may be set to 0.05 to 0.2 mm.

[0013]

[Action]

 According to the present invention, two piece portions 4 are provided on the outer periphery of the tip end portion of the front shaft 2 so as to project outward of the front shaft 2 and in mutually opposite directions. The front end face 4a of the front end is in contact with the same plane, and the major axis direction of the end face 4a is substantially linear. The front end face 4a of the front end face 4a faces the outer end of the front shaft 2 in the forward direction. Since the projections 5 are provided, as shown in FIG. 6A, when the tip of the front shaft 2 and the tip of the applicator 3 are brought into contact with the object to be coated, for example, the paper surface at the time of coating, the projections 5 are formed on the paper surface. And the tip of the applicator 3 are in contact with each other, and two gaps 23 are formed between the tip surfaces 4a of the two pieces 4 and the paper surface with the applicator 3 in between. Then, when the applicator moves, the tip shaft 2 and the like move, and the fluid (shown by symbol F) flowing out from the discharge port 1 of the tip shaft 2 flows along each projection 5 or the tip end portion of the applicator 3, Further, it flows into the gap 23 and is transferred to the paper surface.

Therefore, the fluid is transferred to the paper surface by flowing into the two gaps 23, so that a sufficient amount of the fluid is smoothly applied on the paper surface. Further, since the fluid flows along the inside of each projection 5 and reaches the tip of each projection 5 (the contact portion with the paper surface), when applying the fluid to the paper surface, the front shaft 2 width Since the fluid is less likely to be applied to the paper surface on the outside in the direction, the application width eventually becomes constant according to the distance between the tips of the protrusions 5. Further, even when the applicator is moved, since the abutting portions (tips of the protrusions 5) are on both sides in the width direction of the application surface, the tip surface 4a smoothly moves above the applied fluid. As it passes, the fluid is neither pushed apart by the applicator nor retained on the paper. Therefore, the fluid uniformly spreads in the width direction at the tip of the applicator 3, so that it is eventually applied and written widely on the object.

According to the knowledge of the inventor of the present invention, the height of the protrusion 5 of the tip shaft 2 can be appropriately selected, but it should be considered from the coating thickness of the fluid and the viscosity of the fluid. If the present invention is applied to commonly used applicators (including writing instruments, of course), 0.05 to 0.2 mm is considered to be suitable.

[0016]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a half cross-sectional view seen from a plane direction perpendicular to the axial direction for explaining the configuration of a fluid supply device provided at the tip of a fluid application tool according to an embodiment, and FIG. It is the half cross-sectional view seen from. FIG. 3 is an exploded perspective view of the fluid supply device. Further, FIG. 4 is an explanatory view of the configuration of the front shaft, in which (a) is a half sectional view seen from a plane direction perpendicular to the axial direction, (b) is a side view seen from the same side direction, ( (c) is a cross-sectional view taken along line 4c-4c in (b), and (d) is an enlarged plan view of the tip portion of the tip shaft. Further, FIG. 5 is an enlarged cross-sectional view of the main part of the tip portion of the fluid supply device.

As shown in FIGS. 1 to 3, the fluid supply device includes a cylindrical body-shaped front shaft 2 having a fluid discharge port 1 at its tip, and a spring 7 ahead of the front shaft 2. When the fluid is applied, the front shaft 2 is applied to an object to be coated, such as a paper surface, when the fluid is applied. Also, the tip of the applicator 3 is brought into contact with the applicator 3 to retract, and the fluid is caused to flow out from the gap around the applicator 3 at the discharge port 1 to apply the fluid to the object to be applied.

Further, in the supply device, an inner cylinder 12 that supports the rear end part of the spring 7 is fitted in the central part to the rear end part, and the rear end part of the supply device is provided. An outer peripheral thread groove of a tip end portion of a container 14 for accommodating a fluid such as a substantially cylindrical correction fluid is screwed.

As shown in detail in FIGS. 4 (a) and 4 (b), the tip shaft 2 has a slope 8 whose external shape is a substantially conical shape. The slope 8 includes a forward conical slope 8a, a cylindrical outer peripheral step 8b, and a conical slope 8c that extends rearward from the slope 8a via the step 8b. A curved surface portion 9 having a substantially hemispherical shape is provided at the tip of the inclined surface 8a.

Further, the front shaft 2 has a generally cylindrical shape whose front and rear ends are open and communicates with each other, and an inclined surface 10 substantially parallel to the inclined surface 8 is formed on the inner periphery of the front end portion of the front shaft 2. It is formed in a shape corresponding to the outer peripheral surface shape of the applicator body 3. Further, a tapered valve seat 10a is formed at the tip of the slope 10 so as to follow the discharge port 1.

A portion 13 into which an inner cylinder 12 that supports the rear end of the spring 7 is fitted is formed behind the inclined surface 10 on the inner circumference of the front end portion. This portion 13 has a substantially columnar shape, and projections 13a having a slight height are formed in an annular shape or projecting inward at appropriate intervals for locking the inner cylinder 12 on the inner circumference of the front portion. Furthermore, at the rear portion of the inner peripheral surface of this portion 13, there is formed a thread groove portion 15 into which the outer peripheral thread groove of the front end opening portion of the container 14 is screwed, via an inner peripheral step portion 13b.

Further, as shown in FIGS. 4 (c) and 4 (d), two piece portions 4 are provided on the outer periphery of the tip end portion of the front axle 2 outside the front axle 2 and in a mutually opposite direction. It is provided so as to project in the direction. At the same time, the tip surfaces 4a of the two pieces 4 are in contact with each other on the same plane, and have a shape in which their major axis directions (long sides in the case of a rectangle) are substantially linear. Further, at the end of the tip end surface 4a in the outward direction of the tip shaft 2, a protrusion 5 that faces the tip is provided.

The two pieces 4 are formed, for example, in the shape of blades from the tip of the curved surface portion 9 to the approximately central portion in the axial direction of the forward slope 8 a. Further, the positions of the tip surfaces 4a that are in contact with each other on the same plane are at the same positions as the ejection ports 1 in the axial direction of the tip shaft 2 (see FIG. 4 (d)).

The intervals between the protrusions 5 can be appropriately selected. The height of each protrusion 5 is, for example, 0.05 to 0.2 mm. Further, the protrusion 5 can be formed in various shapes along a part or all of the side surface of a sphere, a cone, a column or the like. In addition, if the projections 5 are formed such that the spheres follow the side surface shape, smooth application can be performed even if the front shaft 2 is tilted and comes into contact with the paper surface.

As shown in FIGS. 1 to 3, the inner cylinder 12 has a substantially cylindrical shape as a whole, a front end portion having a tapered shape, and a central portion surrounding an outer periphery of the inner cylinder 12, which is an annular flange-shaped stopper. 12a is formed so as to project, and the rear end portion is formed in a cylindrical shape which is slightly tapered from the middle. A portion in front of the collar-shaped stopper 12a is a portion to be fitted into the front shaft 2, and a groove 12b having a slight depth with which the projection 13a on the inner periphery of the front shaft 2 engages is formed on the outer peripheral surface thereof. And, it is formed in a shape corresponding to the inner peripheral surface shape of the front shaft 2. Further, a portion rearward of the collar-shaped stopper 12a is a portion that is internally mounted in the container 14 and is formed in a shape corresponding to the inner peripheral surface shape of the tip screwed portion of the container 14.

As shown in detail in FIG. 5, the applicator body 3 has a substantially cylindrical shape, and has a base shaft portion 16 that is inserted into the spring 7 and a tip end of the base shaft portion 16. A flange portion 17 which is provided and repulsed by the spring 7, a conical portion 18 that extends forward from the flange portion 17, a forward portion that extends forward from the tip of the conical portion 18, and through the spring 7. A valve shaft portion 19 having a tapered step portion 19a forming a valve mechanism with the valve seat 10a of the front shaft 2 formed at the tip portion, and a valve shaft portion 19 formed at the tip portion for contacting an object to be coated. It mainly consists of the pressing core portion 20. The height of the pressing core portion 20 protruding from the discharge port 1 to the outside when the applicator body 3 is assembled to the tip shaft 2 is larger than the height of the protrusion 5 of the two piece portions 4. It is set.

The gap between the applicator body 3 and the front shaft 2 behind the valve mechanism, that is, the outer peripheral surface of the valve shaft portion 19 of the applicator body 3 and the front shaft 2 shown by reference numeral 21 in FIG. It is preferable to set the interval between the inner peripheral surface and the inner peripheral surface of 0.05 to 0.2 mm in consideration of use or viscosity of the fluid.

The tip shaft 2 and the applicator body 3 can be made of various resins. For example, when the material of the tip shaft 2 is POM (polyoxymethylene; polyacetal resin) and the material of the applicator body 3 is PA (polyamide; nylon resin), the applicator body swells depending on the properties of the fluid and the dimension Since it is enlarged, the difference in swelling can be incorporated and the sealing effect at the tip can be obtained.

As shown in FIGS. 1 and 2, the container 14 is a tubular body having an appropriate shape, for example, a closed end, and is made of an elastic body made of resin. As a result, if the container 14 is pressed (squeezed) during use, the internal pressure is increased and the fluid can be discharged from the discharge port 1 of the tip shaft 2. It should be noted that the container 14 may contain a sphere or rod for the purpose of stirring the fluid.

Here, the assembly of the fluid supply device is performed as follows. In this case, the parts such as the front shaft 2, the applicator 3, the inner cylinder 12, and the spring 7 are manufactured in advance. Then, the applicator body 3 is inserted into the front shaft 2. At this time, the spring 7 is attached to the base shaft portion 16 of the coated body 3. Thereafter, the inner cylinder 12 is inserted into the rear portion of the front shaft 2, and the inner cylinder 12 is fixed to the front shaft 2 by fitting the protrusion 13a on the inner circumference of the front shaft 2 into the groove 12b on the outer periphery of the inner cylinder 12. In this case, the annular stopper 12a of the inner cylinder 12 comes into contact with the inner peripheral stepped portion 13b of the front shaft 2.

As described above, the assembly of the fluid supply device is completed, and then this device is fixed to the tip of the container 14. That is, the mouth of the tip of the container 14 is inserted into the front shaft 2 and screwed into the thread groove 15 to fix the container 14 and the front shaft 2. This allows the device to be fixed to the container 14.

During storage, the cap 22 is usually placed on the front shaft 2 to prevent the fluid from communicating with the outside air at all times. Therefore, a perfect sealing property as a product is achieved by the front shaft 2 and the cap 22. Guaranteed.

When applying the correction liquid, as shown in FIG. 5, the pressing core portion 20 of the applicator body 3 that first comes into contact is pressed against the paper surface so that the applicator body 3 is placed in the front shaft 2. Since the valve seat 10a of the tip shaft 2 and the tapered step portion 19a of the applicator body 3 are opened by retracting, the fluid can be applied to the paper surface by pressing the container 14.

At that time, the fluid flowing out from the gap between the discharge port 1 of the tip shaft 2 and the outer periphery of the pressing core portion 20 of the coating body 3 is outside the pressing core portion 20 or one portion of the front shaft 2. It flows along the front end face 4a of 4 and reaches the tip of the pressing core portion 20 or the tip of each of the protrusions 5. Then, when the user moves the applicator on the paper surface, the fluid flowing to the tip of the pressing core portion 20 is transferred from the tip to the paper surface and applied.

Here, FIG. 6 shows an explanatory view of the operation of the fluid supply device of the above embodiment, (a) is a detailed cross-sectional view of the tip of the supply device, and (b) is a detail of the tip of the comparative example. FIG.

As shown in FIG. 6A, at the time of coating, if the tip end of the front shaft 2 and the applicator 3 are brought into contact with the object to be coated, for example, the paper surface 24, the projections 5 and the applicator 3 on the paper surface 24 are brought into contact. The tips of the pressing core portions 20 come into contact with each other, and two gaps 23 are formed between the front end surfaces 4a of the two pieces 4 and the paper surface with the pressing core portion 20 interposed therebetween. Then, when the applicator moves, the tip shaft 2 and the like move, and the fluid (shown by reference numeral F) flowing out from the discharge port 1 of the tip shaft 2 flows along each projection 5 or the tip of the pressing core portion 20. Further, it flows into the gap 23 and is transferred to the paper surface 24.

Therefore, the fluid is transferred to the paper surface 24 by flowing into the two gaps 23, so that a sufficient amount of the fluid is smoothly applied on the paper surface 24. In addition, since the fluid flows along the inside of each protrusion 5 and reaches the tip of each protrusion 5 (the contact portion with the paper surface), when applying the fluid on the paper surface, the width of the front shaft 2 is wider than the contact portion. Since the fluid is less likely to be applied to the paper surface on the outside in the direction, the application width eventually becomes constant according to the distance between the tips of the protrusions 5. Further, even when the applicator is moved, since the abutting portions (tips of the protrusions 5) are on both sides in the width direction of the application surface, the tip surface 4a smoothly passes over the applied fluid. As a result, the fluid is not pushed apart by the applicator and does not stay on the paper surface 24. Therefore, the fluid uniformly spreads in the width direction at the tip of the pressing core portion 20, so that the fluid is eventually widely applied and written on the object to be coated.

On the other hand, as shown in FIG. 6 (b), a fluid body is applied to the paper surface 24 with an applicator provided with the front shaft 2 A having neither the two pieces 4 or the projections 5 but a wide tip. In the case of applying, it is necessary to bring only the front end of the applicator 3A into contact with the paper surface 24 and to slightly separate the front shaft 2A from the paper surface 24 in order to let the fluid flow out to the front end portion of the front shaft 2A. is there. Since the spread length L of the fluid in the coating width direction changes depending on the separated distance, it is difficult to perform coating with a constant width.

From the above, in the fluid supply device of the present invention, the amount of fluid applied to an object to be coated such as a paper surface is about twice as much as that of the fluid without a protrusion, and the fluid is smooth. Can be applied. Further, the width of the fluid to be applied is constant according to the interval between the protrusions. The amount of fluid applied can be adjusted as desired by the pressing amount of the container.

In the embodiments, the correction fluid is used as an example of the fluid, but it is clear that the present invention is not limited to this. For example, the present invention can be applied to a writing instrument using a fluid such as another fluid or ink. Applicable.

[0041]

[Effect of device]

 As described above, according to the present invention, when applying or writing a fluid, it is possible to apply and write a wide fluid with a constant width and an appropriate amount.

[Brief description of drawings]

FIG. 1 is a half cross-sectional view of a fluid supply device of an embodiment as seen from a plane direction perpendicular to the axial direction.

FIG. 2 is a half cross-sectional view of a fluid supply device according to an embodiment of the present invention as viewed from a side direction perpendicular to the axial direction.

FIG. 3 is an exploded perspective view of the fluid supply device of the embodiment.

4A and 4B are explanatory views of a tip shaft of the fluid supply device according to the embodiment, in which FIG. 4A is a half sectional view, FIG. 4B is a side view, and FIG. 4C is along a line 4c-4c in FIG. 4B. A sectional view, (d) is an enlarged plan view of a main part.

FIG. 5 is an enlarged cross-sectional view of the main part of the tip of the fluid supply device of the embodiment.

FIG. 6 is a view for explaining the action of the fluid supply device of the above embodiment, (a) is a detailed cross-sectional view of the tip of the supply device, (b).
FIG. 4 is a detailed cross-sectional view of a tip portion of a comparative example.

FIG. 7 is a plan view of a configuration example of a conventional fluid supply device.

[Explanation of symbols]

 1 Discharge Port 2 Tip Axis 3 Applicator 4 Piece 4a Tip Surface 5 Protrusion 8 Slope 8a Forward (Outer) Slope 8b Step 8c Rear (Outer) Slope 9 Curved Surface 10 (Inner) Slope 10a Valve Seat 12 Inner Cylinder 14 Container 15 Screw Groove 16 Base Shaft 17 Collar 18 Cone 19 Valve Shaft 19a Tapered Step 20 Pressing Core 23 Gap F Flow of Fluid

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Atsunori Satake 1091 Tateishi, Fujioka, Gunma Mitsubishi Pencil Co., Ltd. Research and Development Center

Claims (2)

[Scope of utility model registration request] 1. A tip shaft (2) of a tubular body having a fluid discharge port (1) at its tip, and a tip shaft (2) elastically and elastically inserted into the tip shaft (2), and said discharge port. (1) has an applicator (3) with a part of its tip protruding from the tip (2) and the tip of the applicator (3) is brought into contact with the object to be coated when applying the fluid. A fluid supply device for an applicator, in which the application body (3) is retracted and the fluid is caused to flow out from a gap around the application body (3) at the discharge port (1), wherein the tip portion of the tip shaft (2) is provided. Two piece parts (4) are provided on the outer periphery of the so as to project outwardly of the tip shaft (2) and in directions opposite to each other, and the tip surfaces (4a) of the two piece parts (4) are provided. Have a shape in which they are in contact with each other on the same plane and their major axis directions are substantially along a straight line, and the end portion of the tip surface (4a) in the outward direction of the tip shaft (2). Has
A fluid supply device for an applicator, which is provided with a protrusion (5) facing forward. 2. The height of each protrusion (5) is 0.05 to 0.2.
The fluid supply device for an applicator according to claim 1, wherein the fluid supply device is configured to have a size of mm.