JP3187391U - Writing device - Google Patents

Abstract

[PROBLEMS] To provide a writing device that has a simplified structure, enables a significant reduction in production cost, and realizes stability and reliability of performance.
A writing apparatus includes a pen cylinder, one end of which is a liquid storage pipe 11, a pressure balance plug 3 provided in the liquid storage pipe 11 for isolating ink, and ink in the liquid storage pipe 11 is connected to the pressure balance plug. 3. A relay core 6 made of a fiber material that transmits to the outside, a liquid induction conversion core 7 that communicates the relay core 6 and the pen core 9, and one end inserted into the atmospheric pressure balance plug 3, and the other end is an atmospheric pressure balance plug 3 includes cylindrical ventilation cores 5 and 4 that communicate with the atmosphere outside and have an axial passage of 450 to 500 nanometers in the axial direction. Outside air can be replenished to the storage tube through the nanometer level vent core, so that ink in the storage tube will not leak, thereby maintaining the same pressure inside and outside the storage tube. At the same time, smooth writing with a writing pen is guaranteed.
[Selection] Figure 1

Description

  The present invention relates to a writing instrument, and more particularly, to a liquid storage type writing apparatus that has a simple structure, can be written smoothly, and does not easily leak.

  A writing device that automatically transmits ink, for example, a writing pen, includes a liquid storage portion and a liquid induction portion. The liquid storage portion stores liquid ink, and thus gel ink, as an ink source, and the liquid induction portion receives ink. Guide to the nib and realize the purpose of writing. With the use of ink at the time of writing, it is necessary to supplement the liquid storage part with outside air in order to avoid the influence of the outflow of ink due to the negative pressure generated in the liquid storage part. That is, the liquid storage part and the outside air further require an air flow path that makes the pressure of the liquid storage part equivalent to the outside air, and the air flow path is a key technology that guarantees smooth writing and prevention of leakage in the writing pen. . Conventional liquid storage type writing pens realize communication between the liquid storage part and the outside air by providing a dustproof piece, a labyrinth vent plug, a nanometer lyophobic transmission piece, and a one-way valve. Although such a writing pen can maintain the balance of atmospheric pressure, the structure is excessively complicated, the number of parts is increased, the assembly procedure is increased, and the production cost is increased.

  An object of the present invention is to provide a writing device with a simple structure, in response to the disadvantage that the structure of a conventional liquid storage type writing pen is complicated and expensive.

  The present invention uses the following technical scheme to solve the technical problem. That is, a writing apparatus is configured, and the writing apparatus includes a pen core, a pen cylinder that is an ink storage pipe at one end, a pressure balance stopper that is provided in the liquid storage pipe and seals the filled ink, and the inside of the liquid storage pipe And a liquid induction conversion core for communicating the relay core and the pen core with one end inserted into the pressure balance plug. A cylindrical air core having a nanometer-level core hole, the other end communicating with the atmosphere outside the pressure balance stopper, the air core having a pore diameter of the ink particle size A larger ventilation path is provided in the axial direction.

  In the above writing apparatus, the relay core and the pen core are opposed to each other in the liquid induction conversion core, and a gap exists between both ends.

  The writing apparatus further includes a cap that is attached to a tip of a pen cylinder and covers the pen core.

  In the above writing apparatus, the pressure balance stopper has one through-hole with a diameter of 4 mm and two through-holes with a diameter of 2 mm, and the relay core tightly passes through the 4 mm hole and is sealed in the storage tube. Inserted into the funnel structure at the end, the first and second vent cores are tightly inserted into the 2 mm holes, respectively, and one end of the vent core communicates with the storage tube and the other communicates with the atmosphere. The length of the first ventilation core in the ventilation core body is longer than the length of the second ventilation core so that the first ventilation core is in contact with the liquid induction conversion core.

  In the above writing apparatus, the liquid induction conversion core includes a core made of cotton and a plastic thin film covering the outer periphery of the core, and three stoppers are evenly provided on the surface of the atmospheric pressure balance plug that faces the liquid induction conversion core. And is used to position the liquid induction conversion core at the axial center position.

  In the above writing device, the pore diameter of the nanometer-level core hole of the ventilation core is 450 to 500 nanometers, the ventilation porosity is 48 to 68%, and the ink includes fluorescent ink, marker ink, white Board ink, blackboard ink, or correction fluid.

  In the writing apparatus described above, the pore diameter of the nanometer-level core hole of the ventilation core is 480 nanometers, and the ventilation porosity is 55%.

  If the writing device of the present invention is implemented, outside air can be replenished to the liquid storage tube through the ventilation core having a nanometer level hole, so that the ink in the liquid storage tube does not leak, thereby The pressure inside and outside the storage tube is maintained at the same level, and smooth writing with a writing pen is guaranteed. In the writing device of the present invention, the structure is simplified and the production cost can be greatly reduced and the performance is stabilized by using a ventilation core instead of the conventional pressure balancing member composed of a plurality of parts. And reliability are realized.

FIG. 1 is a diagram showing the structure of an embodiment of the writing apparatus of the present invention. FIG. 2 shows an exploded structure of the part. FIG. 3 is a view showing the structure of the air pressure balance stopper.

  The present invention will be further described below in combination with the drawings and examples.

  As shown in FIGS. 1 and 2, one embodiment of the writing apparatus of the present invention includes a fiber pen core 9, a pen cylinder 2, a front base 8, a rear base 1, a cap 10, a liquid storage pipe 11, a stopper 12, and an atmospheric pressure balance. It includes a plug 3, a liquid induction conversion core 7, a fiber material relay core 6, and two cylindrical ventilation cores, that is, a first ventilation core 5 and a second ventilation core 4. The first ventilation core 5 is a second ventilation core. Longer than 4.

  From the drawing, the front base 8 and the rear base 1 are respectively attached to both ends of the pen cylinder 2, and a liquid storage pipe 11 and a pen core 9 are provided in order in the pen cylinder 2, and the liquid storage pipe 11 is located at the end of the pen cylinder 2. The liquid induction conversion core 7 and the relay core 6 are located in the middle of the pen cylinder 2, the pen core 9 is attached to the tip of the pen cylinder 2, and a part of the pen core 9 is exposed to the outside of the pen cylinder 2. 10 is attached to the tip of the pen cylinder 2 and covers the pen core 9. The ink in the liquid storage tube 11 is guided and conveyed to the pen core 9 through the relay core 6 and the liquid induction conversion core 7, and writing is realized when the pen core 9 contacts the paper. The ink in the liquid storage tube 11 may be fluorescent ink, marker ink, whiteboard ink, blackboard ink, or correction liquid. One end of the liquid storage tube 11 is a sealed end, and the sealed end can be engaged with the rear stand 1 with a funnel-like structure. At the opening end of the liquid storage tube 11, a pressure balance plug 3 that is closely engaged with the opening end is attached. The air pressure balance plug 3 may be equipped with the first and second ventilation cores 5 and 4 and may be used for fixing and positioning the relay core 6. Specifically, the structure of the atmospheric pressure balance plug 3 is shown in FIG. The air pressure balance plug 3 is provided with one through-hole having a diameter of 4 mm and two through-holes having a diameter of 2 mm. The relay core 6 passes through the 4 mm hole and has a funnel-like structure at the closed end of the liquid storage tube 11. Inserted inside. The first vent core 5 and the second vent core 4 are each inserted into a 2 mm hole, and the left end of the vent core communicates with the liquid storage tube 11 and the right end communicates with air. Among them, the first ventilation core 5 comes into contact with the liquid induction conversion core 7 to improve the liquid induction effect. Three stoppers 12 for stably fixing the liquid induction conversion core 7 on the axis are provided on the end face of the atmospheric pressure balance plug 3 facing the liquid induction conversion core 7.

  The material used for the first and second ventilation cores 5 and 4 is a fiber material that has been subjected to pore technology treatment, and pores of nanometer level are evenly distributed. A nanometer level hole here is a hole whose pore diameter is less than 1000 nanometers and whose nanometer is a measurement unit. The pore diameter of the nanometer level pores may be selected between 400 and 800 nanometers, preferably 500 nanometers. Usually, the particle size of ink is 300 to 350 nanometers, which is smaller than the pore diameter of nanometer level pores. Therefore, an air path can be formed in the ventilation core, and since the pore diameter is appropriate, good water absorption performance is provided, so that ink leakage can be effectively prevented. The porosity of the first and second vent cores 5 and 4, that is, the percentage of the total volume of the nanometer level pores to the total volume of the vent core is between 50% and 60%, optimally 55%. As a result, smooth flow of air is effectively guaranteed. The vent cores 5 and 4 and the relay core 6 are closely engaged with the holes in the air pressure balance plug 3 to prevent ink leakage.

  The material used for the liquid induction conversion core 7 is cotton, and its outer surface is covered with a plastic thin film. Since cotton has good water absorption performance, liquid leakage can be prevented. Both ends of the liquid induction conversion core 7 are inserted and connected to the relay core 6 and the tip of the writing pen, respectively, and a predetermined gap exists between the relay core 6 and the pen core 9 and is not in direct contact. . According to such a design, the ink in the relay core 6 can first be injected into the liquid induction conversion core 7 and then flown into the pen core 9, so that the ink flow rate in the pen core 9 is kept constant. It is possible to keep the handwriting color more uniform.

When the writing device of the present invention is used, even if the liquid level in the liquid storage pipe 11 is lowered and the negative pressure is increased, the outside air flows into the liquid storage pipe 11 through the ventilation core. Balance of pressure and pressure is realized. By providing the two vent cores and the air pressure balance plug 3, the air pressure in the liquid storage tube 11 is maintained equal to the outside air, and the structure is simplified. In addition, the manufacturing technology of the ventilation core is mature and reliable, and the production cost can be reduced. The number of ventilation cores of the liquid storage type writing pen in the present invention is not limited to two shown in the present embodiment, but may be one, three, or even more. The shape of the ventilation core is not limited to the circular shape shown in the present example, but may be a rectangular shape. Also, the pen core of the present invention can be realized in a plurality of ways, for example, a metal pen tip with a ball, and this embodiment does not limit the present invention.

Claims (5)

A pen core (9), a pen cylinder (2) whose one end is a liquid storage pipe (11), a pressure balance plug (3) for isolating ink in the liquid storage pipe (11), and a liquid storage pipe (11) Writing device including a fiber-made relay core (6) that transmits ink to the outside of the air pressure balance plug (3), and a liquid induction conversion core (7) that communicates the relay core (6) with the pen core (9) In
A cylindrical ventilation core having one end inserted into the pressure balance plug (3), the other end communicating with the atmosphere outside the pressure balance plug (3), and a core hole ventilation path of 450 to 500 nanometers in the axial direction The liquid induction conversion core (7) further includes a core made of cotton and a plastic thin film covering the outer periphery of the core, and the liquid induction conversion core in the atmospheric pressure balance plug (3) A writing apparatus, wherein a stopper (12) is evenly provided on a surface facing (7), and the stopper is used to position the liquid induction conversion core (7) at an axial center position.   Furthermore, a cap (10) that is attached to the tip of the pen cylinder (2) and covers the pen core (9) is included, and the relay core (6) and the pen core (9) are located in the liquid induction conversion core (7). 2. The writing apparatus according to claim 1, wherein the shaft centers are opposed to each other, and a gap exists between both ends.   The pressure balance plug (3) is provided with one through hole having a diameter of 4 mm and two through holes having a diameter of 2 mm. The relay core (6) closely passes through the 4 mm hole and is stored in a liquid storage tube ( 11), the first vent core (5) and the second vent core (4) are inserted tightly into the 2 mm holes, respectively, and one end of the vent core (5, 4) is The first vent of the vent core body communicates with the liquid storage pipe (11), the other end communicates with the atmosphere, and the first vent core (5) contacts the liquid induction conversion core (7). 3. The writing device according to claim 2, wherein the length of the core (5) is longer than the length of the second ventilation core (4).   The ventilation hole of the nanometer level core hole of the ventilation core (5, 4) is 48 to 68%, and the ink is fluorescent ink, marker ink, whiteboard ink, blackboard ink, or correction liquid. The writing apparatus according to claim 3, wherein: 5. The writing device according to claim 4, wherein a hole diameter of the nanometer-level core hole of the vent core body (5, 4) is 480 nm, and a vent ratio is 55%.