Double-leakage-proof mark pen

Abstract

The utility model discloses a double-leakage-proof mark pen which comprises a pen holder and a pen point connecting base connected to the front end of the pen holder, a pen point is installed in the pen point connecting base, an ink bin is arranged in the pen holder, a sponge barrel is arranged at an outlet of the ink bin, and a water storage device is further arranged between the sponge barrel and the pen point connecting base. The rear section of the pen point penetrates through the water storage device and extends into the sponge barrel. According to the utility model, the sponge cylinder and the water storage device are used for dual leakage prevention, so that the problem of ink leakage is effectively avoided.

Description

Technical Field

[0001] The utility model relates to a marker pen, in particular to a double anti-leak marker pen. Background Art

[0002] Marker pens are commonly used stationery. Existing marker pens generally include a pen barrel, with a pen tip and a pen tip cover provided at the front end of the pen barrel. The pen tip is installed in the pen tip cover, and the pen barrel contains an ink cartridge or a pen core adsorbed with ink. In the idle state of traditional marker pens, the ink in the pen barrel easily seeps out slowly from the pen tip, resulting in ink leakage.

[0003] Although a cotton core is provided in existing marker pens, effectively avoiding the problem that ink easily seeps out from the pen tip in the idle state, during actual use, there is still a problem that the pen tip easily leaks ink, affecting the user, and serious ink leakage easily accelerates the evaporation of ink, thus increasing the economic consumption of the user. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a double anti-leak marker pen to solve the problem of ink leakage that easily occurs in existing marker pens.

[0005] The double anti-leak marker pen includes a pen barrel and a pen tip connecting seat connected to the front end of the pen barrel. The pen tip is installed in the pen tip connecting seat. It is characterized in that an ink cartridge is provided in the pen barrel, a sponge cylinder is provided at the outlet of the ink cartridge, a water storage device is further provided between the sponge cylinder and the pen tip connecting seat, and the rear section of the pen tip passes through the water storage device and extends into the sponge cylinder.

[0006] Preferably, the water storage device is of a hollow structure, and multiple groups of fins are provided on the outer surface of the water storage device, with small gaps between adjacent fins. Due to the small gaps, when ink enters the gaps, due to capillary action, a certain amount of ink can be adsorbed and stored in the gaps, playing a role in temporarily storing ink. Further, the apertures at both ends of the water storage device are large, the aperture in the middle section is small, and it is adapted to the outer diameter of the rear section of the pen tip.

[0007] Preferably, an air permeable groove is provided on the outer surface of the water storage device along its axial direction to balance the air pressure on both sides and facilitate the entry and exit of ink.

[0008] Preferably, the outlet diameter of the ink cartridge is smaller than the diameter of the sponge cylinder, and the sponge cylinder abuts against the outside of the outlet of the ink cartridge.

[0009] Preferably, a water storage device connecting head is provided at one end of the water storage device close to the sponge cylinder, and the water storage device connecting head extends into the sponge cylinder.

[0010] Preferably, a pen tip seat connector is provided at one end of the water storage device close to the pen tip connector seat, and a mating connection hole is provided on the pen tip connector seat, and the pen tip seat connector is inserted into the connection hole.

[0011] After the ink in the ink cartridge undergoes the first stage of ink absorption through the sponge cylinder, a part of the remaining ink enters the water storage device to complete the second stage of ink absorption. This structure results in less ink remaining in the sponge cylinder and relatively less ink in the pen tip, effectively avoiding ink leakage. When the user uses the pen tip, both ends of the sponge cylinder absorb ink from the ink cartridge and the water storage device respectively, effectively ensuring the supply of ink.

[0012] Advantages of the present utility model:

[0013] 1. The present utility model adopts a double anti-leakage structure with a sponge cylinder and a water storage device, effectively avoiding the problem of ink leakage.

[0014] 2. Multiple groups of fins are provided on the outer surface of the water storage device, with small gaps between adjacent fins. When ink enters the gaps, due to capillary action, a certain amount of ink can be adsorbed and stored in the gaps, serving as a temporary ink storage function.

[0015] 3. Venting grooves are provided on the outer surface of the water storage device to balance air pressure and facilitate the entry and exit of ink.

[0016] 4. Connectors are provided at both ends of the water storage device, facilitating positioning and connection.

[0017] 5. When the user uses the pen tip, both ends of the sponge cylinder absorb ink from the ink cartridge and the water storage device respectively, effectively ensuring the supply of ink, making the ink output more stable and the writing smoother.

[0018] 6. Under negative pressure, ink is absorbed at the rear section of the pen tip. Since there is less ink in the sponge cylinder, the amount of ink sucked into the pen tip will not be too much, providing better anti-leakage performance. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the present utility model.

[0020] Figure 2 is a schematic diagram of the pen barrel, pen tip connector seat, pen cap and rear plug.

[0021] Figure 3 is a schematic diagram of the sponge cylinder.

[0022] Figure 4 is a schematic diagram of the water storage device.

[0023] Figure 5 is a schematic diagram of the pen tip.

[0024] Pen shaft - 1, sponge cylinder - 2, water reservoir - 3, pen tip connector - 4, pen tip - 5, pen cap - 6, ink cartridge - 7, rear plug - 8, rear section of pen tip - 9, fin - 10, gap - 11, ventilation groove - 12, water reservoir connector - 13, pen tip seat connector - 14, connection hole - 15 Detailed implementation mode

[0025] The technical solution of the present utility model will be described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the implementation modes of this application, rather than all of them; and the structures shown in the drawings are only schematic and do not represent real objects. It should be noted that based on these embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by this application.

[0026] It should be noted that in this article, the term "including" or any other variant thereof is intended to cover non - exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical or equivalent element in the process, method, article or device including the said element.

[0027] Terms such as "upper", "lower", "inner", "outer", etc. do not constitute an absolute spatial relationship limitation, but only a concept of relative position. This is understandable to those skilled in the art.

[0028] See Figures 1-5 , the double - leak - proof marker pen mainly includes a pen shaft 1, a pen tip connector 4, a pen tip 5, a water reservoir 3, a sponge cylinder 2 and a pen cap 6.

[0029] See Figure 2 , the pen shaft 1 is of a hollow structure, with an ink cartridge 7 arranged in the middle. The front end of the pen shaft 1 is connected with a pen tip connector 4. In this embodiment, the pen tip connector 4 is inserted into the front end of the pen shaft 1, and a rear plug 8 is arranged at the rear end of the pen shaft 1.

[0030] See Figure 1 and 3 , the sponge cylinder 2 is arranged at the outlet position of the ink cartridge 7, and the length of the sponge cylinder is about 2 cm. The outlet diameter of the ink cartridge 7 is smaller than the diameter of the sponge cylinder 2, and the sponge cylinder 2 abuts against the outside of the outlet of the ink cartridge 7.

[0031] A water reservoir 3 is also arranged between the sponge cylinder 2 and the pen tip connector 4, and the rear section 9 of the pen tip 5 passes through the water reservoir 3 and extends into the sponge cylinder 2.

[0032] See Figure 4, in this embodiment, the water reservoir 3 has a hollow structure. Multiple groups of fins 10 are provided on the outer surface of the water reservoir, and there are small gaps 11 between adjacent fins. Due to the small gaps, when ink enters the gaps, due to the capillary action, a certain amount of ink can be adsorbed and stored in the gaps 11, playing a role in temporarily storing ink. To meet the installation requirements, the reserved gap between the water reservoir 3 and the pen barrel 1 is small, resulting in a relatively sealed fin area of the water reservoir. To solve this problem, a ventilation groove 12 is provided on the outer surface of the water reservoir along its axial direction to balance the air pressure and facilitate the entry and exit of ink.

[0033] The water reservoir 3 has a hollow structure, and the apertures at both ends of the water reservoir are large, while the aperture of the middle section is small, and the aperture of the middle section is adapted to the outer diameter of the rear section of the pen tip.

[0034] A water reservoir connector 13 is provided at one end of the water reservoir 3 close to the sponge cylinder, and the water reservoir connector 13 extends into the sponge cylinder.

[0035] A pen tip seat connector 14 is provided at one end of the water reservoir 3 close to the pen tip connection seat 4, and a mating connection hole 15 is provided on the pen tip connection seat 4, and the pen tip seat connector 14 is inserted into the connection hole 15.

[0036] After the ink in the ink cartridge 7 undergoes the first stage of ink absorption through the sponge cylinder 2, a part of the remaining ink enters the water reservoir 3 to complete the second stage of ink absorption. This structure results in less ink remaining in the sponge cylinder 2 and relatively less ink in the pen tip, effectively avoiding ink leakage. When the user uses the pen tip, both ends of the sponge cylinder 2 absorb ink from the ink cartridge 7 and the water reservoir 3 respectively, which can effectively ensure the supply of ink, making the ink output more stable and the writing smoother.

[0037] The structure of the present utility model can also be applied to double-headed markers.

[0038] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. Double leak-proof marker pen, comprising a pen barrel, a pen tip connecting seat connected to the front end of the pen barrel, and the pen tip is installed in the pen tip connecting seat, characterized in that, A ink cartridge is provided inside the pen barrel. A sponge cylinder is arranged at the outlet of the ink cartridge. A water reservoir is also arranged between the sponge cylinder and the pen tip connector. The rear section of the pen tip passes through the water reservoir and extends into the sponge cylinder.

2. The double leak-proof marker pen according to claim 1, characterized in that, The water reservoir is of a hollow structure. Multiple groups of fins are arranged on the outer surface of the water reservoir, and there are small gaps between adjacent fins.

3. The double leak-proof marker pen according to claim 2, characterized in that, The apertures at both ends of the water reservoir are large, the aperture of the middle section is small, and it is adapted to the outer diameter of the rear section of the pen tip.

4. The double leak-proof marker pen according to claim 2, characterized in that, A ventilation groove is arranged on the outer surface of the water reservoir along its axial direction.

5. The dual leak-proof marker according to claim 1, characterized in that, The outlet diameter of the ink cartridge is smaller than the diameter of the sponge cylinder, and the sponge cylinder abuts against the outside of the outlet of the ink cartridge.

6. The dual leak-proof marker pen according to claim 2, characterized in that, A water reservoir connector is arranged at one end of the water reservoir close to the sponge cylinder, and the water reservoir connector extends into the sponge cylinder.

7. The double leak-proof marker pen according to claim 2, wherein, A pen tip seat connector is arranged at one end of the water reservoir close to the pen tip connector. A mating connection hole is arranged on the pen tip connector, and the pen tip seat connector is inserted into the connection hole.

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