Writing pen

Abstract

The utility model provides a writing pen. The writing pen comprises a pen holder, a pen point, a wrapping core, an air pressure balance partition plug and a water diversion core. Writing media are stored in the penholder. The nib is mounted on the penholder. One end of the pen point is inserted into the wrapping core. The air pressure balance partition plug is arranged in the pen holder and comprises at least one breathing tube, and the breathing tube is inserted into the end, not inserted into the pen point, of the wrapping core. One end of the ink guide core is inserted into the wrapping core through the breathing tube, and the ink guide core conveys writing media to the pen point through the wrapping core.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of writing tools, in particular to a writing pen. BACKGROUND

[0002] The writing pen is a common writing tool, wherein the self-balancing liquid guiding pen is a common writing pen. The traditional self-balancing liquid guiding pen is mainly divided into a storage ink area, an ink guiding channel, an air exchange area, an air-liquid separation area and a writing assembly. The storage ink area stores ink; the ink can be guided from the storage ink area to the air exchange area through the air-liquid separation area by the ink guiding channel; the air exchange area is mainly composed of a core, and when the core is saturated with ink, no ink will be supplemented; when writing, the ink temporarily stored in the core is consumed first, and when the ink level in the core is too low, air will exchange with the gap between the ink guiding channel and the air-liquid separation area, so as to replenish the ink in the core of the air exchange area.

[0003] However, in the current self-balancing liquid guiding pen, as long as the ink in the core is reduced during writing, the ink will be supplemented into the core by the ink guiding channel, which will cause the ink to be continuously supplemented during writing, and the ink leakage phenomenon is easy to occur. CONTENT OF THE INVENTION

[0004] The main purpose of the present application is to provide a writing pen with simple structure, reliable writing and greatly reduced ink leakage phenomenon.

[0005] To achieve the above purpose, the present application adopts the following technical scheme:

[0006] According to one aspect of the present application, a writing pen is provided, comprising a pen barrel, a pen head, a core, an air pressure balance plug and a water guiding core. The pen barrel stores a writing medium. The pen head is installed in the pen barrel. The core is arranged in the pen barrel, and one end of the pen head is inserted into the core. The air pressure balance plug is arranged in the pen barrel, and the air pressure balance plug comprises at least one breathing tube, and the breathing tube is inserted into one end of the core which is not inserted into the pen head. The water guiding core is arranged in the pen barrel, one end of the water guiding core is inserted into the core through the breathing tube, and the water guiding core transports the writing medium to the pen head through the core.

[0007] According to one embodiment of the present application, one end of the water guiding core inserted into the core protrudes from the end of the breathing tube inserted into the core.

[0008] According to one embodiment of the present application, the length of the breathing tube inserted into the core is 1 / 4 of the length of the core.

[0009] According to one embodiment of the present application, the length of the water guiding core inserted into the core is 1 / 2 of the length of the core.

[0010] According to one of the embodiments of the present application, a first gap is formed between the outer wall of the water guide core and the inner wall of the breathing tube.

[0011] According to one of the embodiments of the present application, a gas return groove is arranged at the end of the breathing tube inserted into the core, the gas return groove is connected to the first gap and the core, and the air in the core can enter the first gap through the gas return groove.

[0012] According to one of the embodiments of the present application, a fixing piece is arranged at the end of the breathing tube inserted into the core, and the fixing piece is used to fix the water guide core.

[0013] According to one of the embodiments of the present application, the core comprises fiber filaments, and the fiber filaments of the core are randomly arranged along the axial and radial directions of the core.

[0014] According to one of the embodiments of the present application, the pen barrel comprises a pen neck and a pen seat. The pen head is arranged on the pen neck, the core is arranged in the pen neck, and the core is not in contact with the inner wall of the pen neck. The pen seat is sealingly connected to the pen neck, the writing medium is stored in the pen seat, and the air pressure balance plug separates the core and the writing medium stored in the pen seat.

[0015] According to one of the embodiments of the present application, the air pressure balance plug further comprises a plug seat, the plug seat is arranged in the pen seat, and the plug seat is connected to the end of the breathing tube which is not inserted into the core.

[0016] According to the above technical solution, the writing pen provided by the present application has the following advantages and positive effects:

[0017] The writing pen provided by the present application is provided with an air pressure balance plug between the cavity at the rear end of the pen barrel and the core connected to the pen head, the breathing tube of the air pressure balance plug is inserted into the core, and the water guide core is also inserted into the core through the breathing tube. In this way, when the height of the ink in the core is higher than the end of the breathing tube inserted into the core, the ink in the cavity at the rear end of the pen barrel will not flow into the core through the water guide core due to the balanced air pressure, thereby avoiding the ink leakage caused by the continuous ink supplement during the use of the writing pen. Meanwhile, as the writing proceeds, the height of the ink in the core further decreases, and when the height of the ink in the core decreases to below the end of the breathing tube inserted into the core, the air at the pen head will enter the part of the air pressure balance plug connected to the cavity at the rear end of the pen barrel through the gap, so that the ink in the cavity at the rear end of the pen barrel can be supplemented to the core through the water guide core, and the core can deliver the ink to the pen head for writing.

[0018] The writing pen provided by the present application can ensure that the core has sufficient ink during writing, and can also avoid the ink leakage caused by the continuous ink supplement during writing. Meanwhile, when the liquid surface of the ink in the core decreases to a certain height, the ink can be supplemented in time through the water guide core, thereby not affecting the writing experience. Attached Figure Description

[0019] The various objectives, features, and advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. The drawings are merely illustrative illustrations of this application and are not necessarily drawn to scale. In the drawings, the same reference numerals always denote the same or similar parts. Wherein:

[0020] Figure 1 This is a schematic diagram of the writing pen used in this application.

[0021] Figure 2 This is a schematic diagram of the air pressure balancing diaphragm and water intake core of this application.

[0022] Figure 3 This is a schematic diagram of the air pressure balancing diaphragm of this application.

[0023] Figure 4 yes Figure 3 A sectional view.

[0024] Figure 5 yes Figure 1 An enlarged schematic diagram of point I.

[0025] Figure 6 This is a schematic diagram of one state of the writing pen of this application.

[0026] Figure 7 This is a schematic diagram of another state of the writing pen of this application.

[0027] Figure 8 yes Figure 7 Enlarged schematic diagram at point II.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1- Writing pen;

[0030] 10 - Pen barrel;

[0031] 20-Pen tip;

[0032] 30-core-coated;

[0033] 40-Pressure balance septum;

[0034] 50-Water intake core;

[0035] 60 - Pen cap;

[0036] 101-Neck;

[0037] 102-Pen holder;

[0038] 103 - Ink Storage Area;

[0039] 104 - inner wall of the pen neck;

[0040] 301 - second gap;

[0041] 302 - liquid level line;

[0042] 401 - breathing tube;

[0043] 402 - seat;

[0044] 403 - inner wall of the breathing tube;

[0045] 404 - backflow groove;

[0046] 405 - fixing piece;

[0047] 406 - chamber;

[0048] 501 - outer wall of the water guide core;

[0049] 502 - first gap. DETAILED DESCRIPTION

[0050] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example implementations to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and descriptions of the same elements will be omitted from descriptions of the same elements in different figures.

[0051] In the following description of various example embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various example structures, systems, and steps in which aspects of the present disclosure can be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps can be utilized and structural and functional modifications can be made without departing from the scope of the present disclosure. Also, while the terms "over," "under," "between," and the like can be used in the present description for the purpose of explanation only, such terms can be used in the context of relative positioning in the example illustrations. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the present disclosure.

[0052] It is to be understood that the terminology "including", "having" and "including" and any variations thereof used herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or device that includes a list of steps or units is not limited to the listed steps or units, but can optionally further include other steps or units not listed, or can optionally further include other steps or components inherent to such a process, method, product or device.

[0053] Relative terms such as "lower" or "bottom" and "upper" or "top" can be used herein to describe one element's relationship to another element as illustrated in the figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one of the figures is turned over, elements described as being on the "lower" side of other elements would then be oriented on the "upper" sides of the other elements. The exemplary term "lower" can therefore encompass both an orientation of "lower" and "upper," depending on the particular orientation of the figure. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. The exemplary term "below" or "beneath" can, therefore, encompass both an orientation of "below" and "above." The application can also be in the form of computer-implemented steps and programs that, when loaded into a computer system, can carry out one or more of the methods described herein.

[0054] Referring to Figure 1 The writing pen 1 of the present application comprises a pen barrel 10, a pen head 20, a core 30, a gas pressure balance stopper 40 and a water diversion core 50. The pen barrel 10 stores writing medium. The pen head 20 is installed in the pen barrel 10. The core 30 is arranged in the pen barrel 10, and one end of the pen head 20 is inserted into the core 30. The gas pressure balance stopper 40 is arranged in the pen barrel 10, and the gas pressure balance stopper 40 comprises a breathing tube 401, which is inserted into the end of the core 30 that is not inserted into the pen head 20. The water diversion core 50 is arranged in the pen barrel 10, and one end of the water diversion core 50 is inserted into the core 30 through the breathing tube 401. The water diversion core 50 transports writing medium to the pen head 20 through the core 30.

[0055] In the present embodiment, the writing pen 1 further comprises a pen cap 60, which can protect the pen head 20 and is detachably connected to the pen barrel 10. When the writing pen 1 is used, the pen cap 60 is pulled off the pen barrel 10 to expose the pen head 20; when not in use, the pen cap 60 is connected to the pen barrel 10 to protect the pen head 20. The direction of the pen barrel 10 along its own axis is defined as follows: the end close to the pen cap 60 is the front, and the end away from the pen cap 60 is the back. The cavity at the back end of the pen barrel 10 is the ink storage area 103, and the cavity at the front end of the pen barrel 10 where the core 30 is arranged can also be called the air exchange area, because air will be exchanged in the cavity where the core 30 is arranged. The gas pressure balance stopper 40 separates the ink storage area 103 and the air exchange area of the pen barrel 10.

[0056] The writing pen 1 of the present application is provided with the air pressure balance partition plug 40 between the ink storage area 103 at the rear end of the pen barrel 10 and the core 30 connected with the pen head 20, and the breathing tube 401 of the air pressure balance partition plug 40 is inserted into the core 30, and the water guide core 50 is also inserted into the core 30 through the breathing tube 401. In this way, when the ink level in the core 30 is higher than the end of the breathing tube 401 inserted into the core 30, the ink in the ink storage area 103 at the rear end of the pen barrel 10 will not flow into the core 30 through the water guide core 50 due to the air pressure balance, avoiding the ink leakage caused by the continuous ink supplement during the use of the writing pen 1. At the same time, with the writing going on, the ink level in the core 30 further decreases, and when the ink level in the core 30 decreases below the end of the breathing tube 401 inserted into the core 30, the air at the pen head 20 will enter the air pressure balance partition plug 40 through the gap, so that the ink in the ink storage area 103 at the rear end of the pen barrel 10 can be supplemented to the core 30 through the water guide core 50, and the core 30 delivers the ink to the pen head 20 for writing.

[0057] In the present embodiment, one end of the water guide core 50 protrudes from the end of the breathing tube 401 inserted into the core 30. The water guide core 50 protruding from the breathing tube 401 inserted into the core 30 can keep the water guide core 50 and the core 30 in contact all the time, and also can realize that when the ink level in the core 30 is lower than the end of the breathing tube 401, the end of the water guide core 50 in contact with the core 30 still keeps the ink, so that the ink supplement of the water guide core 50 is more smooth, and the use of the writing pen 1 is more reliable and the writing is more smooth. The core 30 and the water guide core 50 can both be made of polyester fiber. The water guide core 50 can also be made of filter cotton. The inner diameter of the breathing tube 401 is between 3mm and 4mm, for example, it can be 3.5mm, 3.8mm, and the diameter of the ink storage area 103 at the rear end of the pen barrel 10 is about 13mm-18mm, for example, it can be 15mm, 16mm, etc.

[0058] In the embodiment, the length of the breathing tube 401 inserted into the core 30 is 1 / 4 of the length of the core 30. Since the process of the water conduit core 50 delivering ink to the core 30 is an intermittent process, when the ink level in the core 30 is higher than the end of the breathing tube 401 inserted into the core 30, the ink in the cavity at the rear end of the pen barrel 10 will not flow into the core 30 through the water conduit core 50 due to the air pressure being in equilibrium, thereby avoiding the ink leakage caused by continuous ink supply during use of the writing pen 1. At the same time, as the writing proceeds, the ink level in the core 30 further decreases, and when the ink level in the core 30 decreases below the end of the breathing tube 401 inserted into the core 30, the air at the pen tip 20 will enter the part of the air pressure balance plug 40 communicating with the cavity at the rear end of the pen barrel 10 through the gap, and the ink in the cavity at the rear end of the pen barrel 10 can be supplemented to the core 30 through the water conduit core 50. From the above ink supply process, if the ink supply is not timely, it may cause interruption of ink supply and unsmooth writing. The length of the breathing tube 401 inserted into the core 30 is 1 / 4 of the length of the core 30, which can not only avoid ink leakage, but also ensure timely ink supply and smooth writing.

[0059] In the embodiment, the length of the water conduit core 50 inserted into the core 30 is 1 / 2 of the length of the core 30. The water conduit core 50 is inserted into the core 30 by 1 / 2, which can ensure the length of the core 30 storing ink, thereby ensuring the amount of ink retained in the core 30.

[0060] In the embodiment, as shown in Figure 2 The first gap 502 is provided between the outer wall 501 of the water conduit core 50 and the inner wall 403 of the breathing tube 401. When the ink level in the core 30 is lower than the end of the breathing tube 401 inserted into the core 30, the air can reach the chamber 406 of the air pressure balance plug 40 through the first gap 502, thereby reaching the ink storage area 103 in the pen barrel 10, and the water conduit core 50 can deliver the ink in the ink storage area 103 to the core 30. The width of the first gap 502 is about 0.05mm-0.15mm, that is, the distance between the outer wall 501 of the water conduit core 50 and the inner wall 403 of the breathing tube 401 is about 0.05mm-0.15mm, which can be 0.1mm.

[0061] In the present embodiment, when the ink level in the wick 30 is higher than the end of the snorkel 401 inserted into the wick 30, there is ink in the first gap 502 when the wick 30 is not supplied with ink by the wick 50. When the ink level in the wick 30 drops below the end of the snorkel 401 inserted into the wick 30, air at the tip 20 enters the first gap 502 through the wick 30, pushing the ink originally in the first gap 502 back into the ink storage area 103, and air can enter the part of the cavity behind the end of the barrel 10 that is connected to the air pressure equalization baffle 40, so that the ink in the ink storage area 103 behind the end of the barrel 10 can be replenished to the wick 30 by the wick 50.

[0062] As shown in Figure 1 , Figure 3 and Figure 4 , in the present embodiment, the end of the snorkel 401 inserted into the wick 30 is provided with a gas return groove 404, which connects the first gap 502 and the wick 30, and air in the wick 30 can enter the first gap 502 through the gas return groove 404. The provision of the gas return groove 404 can achieve that when the ink level in the wick 30 is below the end of the snorkel 401 inserted into the wick 30, air in the wick 30 can enter the first gap 502 through the gas return groove 404, and then reach the ink storage area 103 behind the end of the barrel 10, and due to the effect of air pressure, ink can flow to the wick 30 through the wick 50, achieving ink supply.

[0063] In the present embodiment, the number of gas return grooves 404 is two, which are oppositely arranged at the end of the snorkel 401 in the radial direction of the snorkel 401. In other embodiments, the number of gas return grooves 404 can also be more than two, and they are arranged at intervals.

[0064] In the present embodiment, the end of the snorkel 401 inserted into the wick 30 is provided with a fixing piece 405 for fixing the wick 50. Since there is a first gap 502 between the outer wall 501 of the wick 50 and the inner wall 403 of the snorkel 401, and the first gap 502 needs to be maintained, in order to prevent the wick 50 from moving in the snorkel 401, the fixing piece 405 is arranged at the end of the snorkel 401. The fixing piece 405 is arranged in the radial direction of the snorkel 401, and is arranged at the end of the snorkel 401 where no gas return groove 404 is arranged. In the present embodiment, the number of fixing pieces 405 is two, and in other embodiments, the number of fixing pieces 405 can also be more than two. The fixing piece 405 can be a separate piece fixed to the inner wall 403 of the snorkel 401, or it can be a protrusion formed by the end of the inner wall 403 of the snorkel 401 extending inward in the radial direction of the snorkel 401.

[0065] In the embodiment, the air pressure balance plug 40 further comprises a plug seat 402, which is arranged in the pen seat 102 and connected to the end of the breathing tube 401 which is not inserted into the core 30. The plug seat 402 can make the breathing tube 401 stably inserted into the core 30, further prevent ink leakage and ensure smooth writing. In the embodiment, the plug seat 402 and the breathing tube 401 are integrally formed. In some other embodiments, the plug seat 402 and the breathing tube 401 can be separately formed and then fixed together. The plug seat 402 forms a chamber 406 with two open ends, one of which is in communication with the inside of the breathing tube 401 and the other of which is in communication with the ink storage area 103.

[0066] In the embodiment, as shown in Figure 1 and Figure 5 The pen barrel 10 comprises a pen neck 101 and a pen seat 102. The pen head 20 is mounted on the pen neck 101, and the core 30 is arranged in the pen neck 101 without contacting the inner wall 104 of the pen neck 101. The pen seat 102 is sealingly connected to the pen neck 101, the writing medium is stored in the pen seat 102, and the air pressure balance plug 40 separates the core 30 from the writing medium stored in the pen seat 102. The second gap 301 is formed between the core 30 and the inner wall 104 of the pen neck 101, so that the air at the pen head 20 can enter the rear end of the core 30 through the second gap 301, thereby providing a prerequisite for the water guide core 50 to supplement ink to the core 30.

[0067] In the embodiment, the core 30 comprises fiber filaments, and the fiber filaments of the core 30 are randomly interlaced in the axial and radial directions of the core 30. Compared with the traditional arrangement only in the axial direction, the arrangement of random interlacing in the radial and axial directions has stronger ink control ability and can hold more ink for a longer time.

[0068] Figure 6 and Figure 7 The states of the writing pen 1 in use are shown. In actual use, the writing pen 1 is usually in an upright state with the pen head 20 downward. In order to more clearly express the writing pen 1, the drawings of the present application all adopt the horizontal placement of the writing pen 1. That is, the front, the front end defined in the present application are the lower side, the lower end in actual use. The rear, the rear end defined in the present application are the upper side, the upper end in actual use. In order to more clearly illustrate the use process of the writing pen 1 of the present application, Figure 6 and Figure 7 The ink is also shown in the drawings, in which the dot structure represents the ink.

[0069] In the drawings, Figure 6 is the state of the writing pen 1 of the present application in which the liquid level line 302 of the ink is higher than the end of the breathing tube 401 inserted into the core 30. From Figure 6As can be seen, during use of the writing instrument 1, when the liquid level line 302 of the ink is higher than the end of the breathing tube 401 inserted into the wick 30, the part of the wick 30 below the liquid level line 302 is filled with ink, and at this time the end of the breathing tube 401 in the wick 30 is surrounded by the ink, and the air in the second gap 301 and the part of the wick 30 without ink cannot enter the breathing tube 401, and no air passes through the breathing tube 401, so the wicking core 50 cannot replenish the ink in the ink storage area 103 to the wick 30.

[0070] As the writing continues, the ink in the wick 30 is used, and the liquid level line 302 will drop, which can be seen from Figure 7 and Figure 8 When the liquid level line 302 drops below the end of the breathing tube 401 inserted into the wick 30, air can reach the end of the breathing tube 401 inserted into the wick 30 from the second gap 301 and the part of the wick 30 without ink, and due to the air return groove 404 at the end of the breathing tube 401, the air can enter the first gap 502 through the air return groove 404, and push the ink to flow to the ink storage area 103 through the first gap 502, at this time the three conditions of the siphon effect are met: 1, there is liquid ink in the ink storage area 103; 2, the height of the ink column in the wicking core 50 is lower than the height of the water column supported by atmospheric pressure (the wicking core 50 is usually only more than 10 centimeters in length, while the height of the water column supported by atmospheric pressure is 10.34 meters); 3, the end of the wicking core 50 from which the ink flows out (i.e. the end of the wicking core 50 inserted into the wick 30) is lower than the liquid level line 302; at this time the end of the wicking core 50 from which the ink flows out is subjected to a downward pressure greater than the upward atmospheric pressure, and the ink in the wicking core 50 flows to the wick 30, replenishing the ink to the wick 30. Among them Figure 8 is Figure 7 an enlarged view of II in FIG. 8. Figure 8 The arrow in FIG. 8 indicates the flow path of the air.

[0071] The writing instrument 1 of the present application also has a second embodiment, which has substantially the same structure as the writing instrument 1 of the embodiment of Figures 1 to 8 in the basic structure. Therefore, in the following description of the writing instrument 1 of the second embodiment, the structures already described in the embodiment of Figures 1 to 8 will not be repeated. In addition, the same reference numerals are marked for the structures that are the same as those of the writing instrument 1 described in the embodiment of Figures 1 to 8 . Therefore, in the following description of the present embodiment, mainly the differences from the writing instrument 1 of the embodiment of Figures 1 to 8 will be described. Among them, the writing instrument 1 of the second embodiment mainly differs from the writing instrument 1 of the embodiment of Figures 1 to 8In one embodiment, the end of the water-conducting core 50 inserted into the core 30 protrudes beyond the end of the breathing tube 401 inserted into the core 30. In this second embodiment, the end of the water-conducting core 50 inserted into the core 30 is flush with the end of the breathing tube 401 inserted into the core 30.

[0072] The writing pen 1 of this application also has a third embodiment, wherein the writing pen 1 of the third embodiment is related to... Figures 1 to 8 Compared to the writing pen 1 of the third embodiment, it has a substantially the same structure in its basic construction. Therefore, in the following description of the writing pen 1 of this third embodiment, the description will not be repeated. Figures 1 to 8 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 8 The writing pen 1 described in the embodiments has the same structure and is labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure of the writing pen 1 is mainly described. Figures 1 to 8 The differences between the writing pen 1 in this third embodiment and the previous one will be explained. The main difference lies in the positional relationship between the water-conducting core 50 and the breathing tube 401. Figures 1 to 8 In one embodiment, the length of the water guide core 50 inserted into the core 30 is twice the length of the breathing tube 401 inserted into the core 30. In this third embodiment, the length of the water guide core 50 inserted into the core 30 is three times the length of the breathing tube 401 inserted into the core 30.

[0073] The writing pen 1 of this application also has a fourth embodiment, wherein the writing pen 1 of the fourth embodiment is related to... Figures 1 to 8 Compared to the writing pen 1 of the previous embodiment, it has a substantially similar structure in its basic construction. Therefore, in the following description of the writing pen 1 of this fourth embodiment, the description will not be repeated. Figures 1 to 8 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 8 The writing pen 1 described in the embodiments has the same structure and is labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure of the writing pen 1 is mainly described. Figures 1 to 8 The differences between the writing pen 1 in this fourth embodiment and the previous one will be explained. The main difference lies in the positional relationship between the water-conducting core 50 and the breathing tube 401. Figures 1 to 8 In one embodiment, the length of the breathing tube 401 inserted into the core 30 is 1 / 4 of the length of the core 30. In this fourth embodiment, the length of the breathing tube 401 inserted into the core 30 is 1 / 6 of the length of the core 30.

[0074] The writing pen 1 of this application also has a fifth embodiment, wherein the writing pen 1 of the fifth embodiment is related to... Figures 1 to 8 Compared to the writing pen 1 of the previous embodiment, it has a substantially similar structure in its basic construction. Therefore, in the following description of the writing pen 1 of this fifth embodiment, the description will not be repeated.Figures 1 to 8 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 8 The writing pen 1 described in the embodiments has the same structure and is labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure of the writing pen 1 is mainly described. Figures 1 to 8 The differences between the writing pen 1 in this fifth embodiment and the previous one will be explained. The main difference lies in the positional relationship between the water-conducting core 50 and the breathing tube 401. Figures 1 to 8 In one embodiment, the length by which the water-guiding core 50 is inserted into the core 30 is 1 / 2 of the length of the core 30. In this fifth embodiment, the length by which the water-guiding core 50 is inserted into the core 30 is 1 / 3 of the length of the core 30.

[0075] The writing pen 1 of this application also has a sixth embodiment, wherein the writing pen 1 of the sixth embodiment is related to... Figures 1 to 8 Compared to the writing pen 1 of the previous embodiment, it has a substantially similar structure in its basic construction. Therefore, in the following description of the writing pen 1 of this sixth embodiment, the description will not be repeated. Figures 1 to 8 The structure has already been described in the implementation method. Additionally, regarding... Figures 1 to 8 The writing pen 1 described in the embodiments has the same structure and is labeled with the same reference numerals. Therefore, in the following description of this embodiment, the structure of the writing pen 1 is mainly described. ​ The differences between the writing pen 1 in this sixth embodiment and the previous one will be explained. The main difference in this sixth embodiment is the number of water-conducting cores 50 and breathing tubes 401. ​ In one embodiment, there is one breathing tube 401 and one water-guiding core 50. In this sixth embodiment, there are two breathing tubes 401 and two water-guiding cores 50. In fact, there can also be three or more breathing tubes 401 and two or more water-guiding cores 50.

[0076] In summary, the writing pen provided in the application sets the air pressure balance baffle between the ink storage area at the rear end of the pen holder and the core connected with the pen head, and the breathing pipe of the air pressure balance baffle is inserted into the core, and the water guide core is also inserted into the core through the breathing pipe. In this way, when the height of the ink in the core is higher than the end of the breathing pipe inserted into the core, the ink in the cavity at the rear end of the pen holder will not flow into the core through the water guide core due to the air pressure in the balance state, thereby avoiding the ink leakage phenomenon caused by the continuous ink supplement during the use of the writing pen. Meanwhile, with the writing, the ink height in the core further decreases, and when the ink height in the core decreases below the end of the breathing pipe inserted into the core, the air at the pen head will enter the part of the air pressure balance baffle connected with the cavity at the rear end of the pen holder through the gap, so that the ink in the cavity at the rear end of the pen holder can be supplemented to the core through the water guide core, and the core can deliver the ink to the pen head for writing. The writing pen provided in the application can ensure that the core has sufficient ink during writing, and can also avoid the ink leakage phenomenon caused by the continuous ink supplement during writing, and can supplement the ink in time through the water guide core when the liquid level of the ink in the core decreases to a certain height, thereby not affecting the smoothness of writing.

[0077] It can be understood that the various embodiments / implementation modes provided by the utility model can be combined with each other without contradiction, and hereinafter, no longer exemplified.

[0078] In the above exemplary embodiments, the writing pen provided by the utility model is described by taking the application in the boarding bridge as an example. It can be easily understood by those skilled in the art that various modifications, additions, substitutions, deletions or other changes can be made to the specific embodiments in order to apply the related designs of the utility model to other types of devices, and these changes are still within the scope of the principle of the writing pen provided by the utility model.

[0079] It should be noted that the writing pen shown in the drawings and described in the specification is only a few examples of many writing pens that can employ the principles of the utility model. It should be clearly understood that the principles of the utility model are by no means limited to any details or any components of the writing pen shown in the drawings or described in the specification.

[0080] In the utility model embodiments, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more than two, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integrally connected; "connection" can be direct connection, or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model embodiments can be understood according to the specific circumstances.

[0081] In the description of the utility model embodiments, it needs to be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model embodiments.

[0082] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiments. When introducing the elements / components / etc. described and / or illustrated herein, the terms "one", "an" and "the" and the like are used to mean that there is one or more elements / components / etc. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0083] The above is only the preferred embodiment of the utility model embodiments, and is not intended to limit the utility model embodiments. For those skilled in the art, the utility model embodiments can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model embodiments shall be included in the protection scope of the utility model embodiments.

Claims

1. A writing instrument, characterized by comprising: The application relates to a writing instrument, comprising: a pen barrel, in which a writing medium is stored; a pen head, which is mounted on the pen barrel; a core, which is arranged in the pen barrel, and one end of the pen head is inserted into the core; an air pressure balance partition, which is arranged in the pen barrel, and the air pressure balance partition comprises at least one breathing tube, which is inserted into the end of the core that is not inserted into the pen head; a water guide core, which is arranged in the pen barrel, and one end of the water guide core is inserted into the core through the breathing tube, and the water guide core transports the writing medium to the pen head through the core.

2. The writing instrument of claim 1, wherein The end of the water guide core inserted into the core protrudes from the end of the breathing tube inserted into the core.

3. The writing instrument of claim 1, wherein The length of the breathing tube inserted into the core is 1 / 4 of the length of the core.

4. A writing instrument according to any one of claims 1 to 3, wherein The length of the water guide core inserted into the core is 1 / 2 of the length of the core.

5. The writing instrument according to any one of claims 1 to 3, wherein A first gap is formed between the outer wall of the water guide core and the inner wall of the breathing tube.

6. The writing instrument of claim 5, wherein the cap is formed of a material that is transparent to the light. The end of the breathing tube inserted into the core is provided with a gas return groove, which is communicated with the first gap and the core, and air in the core can enter the first gap through the gas return groove.

7. The writing instrument according to any one of claims 1 to 3, wherein The end of the breathing tube inserted into the core is provided with a fixing piece for fixing the water guide core.

8. The writing instrument according to any one of claims 1 to 3, wherein The core comprises fiber filaments, and the fiber filaments of the core are randomly interwoven in the axial and radial directions of the core.

9. The writing instrument according to any one of claims 1 to 3, wherein The pen barrel comprises: a pen neck, in which the pen head is mounted, and the core is arranged in the pen neck, and the core is not in contact with the inner wall of the pen neck; a pen seat, which is sealingly connected to the pen neck, and the writing medium is stored in the pen seat, and the air pressure balance partition separates the core and the writing medium stored in the pen seat.

10. The writing instrument of claim 9, wherein the cap is formed of a material that is transparent to the light. The air pressure balance partition further comprises: a plug seat, which is arranged in the pen seat and is connected to the end of the breathing tube that is not inserted into the core.

Images