A marker

Abstract

The utility model discloses a marker relates to marker field, including pressure reducing valve, the outer wall of pressure reducing valve is provided with first pressure reducing layer and second pressure reducing layer, the top of first pen point cover is fixed with the connecting pipe, the inside movable mounting of pressure reducing valve has the lead core, and the one end of lead core is provided with pen point. The utility model solves the technical problem that the number of marker production accessories is more and the combination process is complex, the pen point and lead core integrated design, when the pressure reducing valve, lead core and second pen point cover combination installation to the inside of pen holder, only need to insert the lead core to second pen point cover, then the pressure reducing valve cover is established on the outer wall of lead core, finally, the combined ink outlet mechanism is inserted to the pen holder, and is fixed in the pen holder inner chamber in the way of interference, and, the pen point and lead core integrated production, the production link of marker ink outlet mechanism is simplified, and it is not necessary to separately configure production process again for two kinds of components, and further reduces the production cost of marker.

Description

Technical Field

[0001] This utility model relates to the field of marker pens, specifically a marker pen. Background Technology

[0002] Marker pens, also known as markers, are writing and drawing tools that come with their own ink. Based on the traditional ink type, they can be divided into three categories: water-based, oil-based, and alcohol-based. With their bright colors, quick drying, and ease of use, they are widely used in advertising slogan drawing, design creation, and daily marking.

[0003] The core components of a current marker pen include the barrel, ink tank, main ink cartridge (also known as the flow core), pressure relief valve, nib, nib cover, and cap. Its ink delivery and writing principle is based on the capillary action of the main ink cartridge and the nib: the main ink cartridge, installed on the pressure relief valve, uses its porous structure to attract the ink in the ink tank, drawing the ink out of the ink tank and continuously transferring it to the nib. The pressure relief valve plays a role in stabilizing the pressure and controlling the ink flow, preventing ink leakage or uneven ink distribution. Finally, through the contact between the nib and the writing medium, a smooth ink release and writing effect are achieved.

[0004] The current ink dispensing structure of marker pens consists of several independent components, such as the main ink cartridge, pressure reducing valve, pen tip, and nib sleeve. During the production and assembly process, the main ink cartridge and pressure reducing valve, as well as the pen tip and nib sleeve, must be combined in pairs. When the two sets of components are then installed into the pen barrel, it is also necessary to ensure the precise alignment between the main ink cartridge and the pen tip. The large number of scattered parts and the complex assembly process not only increase the operational difficulty of assembly production but also extend the overall assembly production cycle of marker pens, resulting in low production efficiency. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a marker pen to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a marker pen, comprising a pressure reducing valve, wherein the outer wall of the pressure reducing valve is provided with a first pressure reducing layer and a second pressure reducing layer, and the first pressure reducing layer and the second pressure reducing layer are composed of multiple sets of pressure reducing plates, a spacer is provided between the first pressure reducing layer and the second pressure reducing layer, a first sealing ring and a second sealing ring are sequentially fixed at the bottom of the pressure reducing valve, a first pen tip sleeve is provided at the bottom of the pressure reducing valve, a connecting tube is fixed at the top of the first pen tip sleeve, a pen refill is movably installed inside the pressure reducing valve, and a pen barrel is sleeved outside the pressure reducing valve, and a pen cap is installed at one end of the pen barrel.

[0007] By adopting the above technical solution, the technical problems of a large number of parts and complex assembly processes in the production of existing marker pens are solved. The integrated design of the pen tip and refill allows the operator to simply insert the pen refill into the second pen tip sleeve, then place the pressure relief valve on the outer wall of the pen refill, and finally insert the assembled ink dispensing mechanism into the pen barrel and fix it in place with an interference fit. Furthermore, the integrated production of the pen tip and refill simplifies the production process of the marker pen's ink dispensing mechanism, eliminating the need for separate production processes for the two types of components, thereby reducing the production cost of marker pens.

[0008] The present invention is further configured such that the cross-sectional diameter of the pen tip is larger than the cross-sectional diameter of the pen refill, and the cross-sectional diameter of the pen refill is set to 2mm.

[0009] Preferably, the pen tip and the refill are integrated into one design, which makes the ink flow from the pen tip smoother. In addition, the cross-sectional diameter of the refill is larger than that of the traditional main ink core, which has a cross-sectional diameter of about 1 mm. This allows for a wider range of pore sizes that can be designed for the internal microporous structure, thereby increasing the types of inks that the refill can be compatible with.

[0010] The present invention is further configured such that a first groove is provided on one side of the outer wall of the first pressure-reducing layer, the second pressure-reducing layer and the spacer, and a second air groove and a first air groove are respectively provided on the outer wall of the first sealing ring and the second sealing ring.

[0011] Preferably, the gas inside the first pen tip sleeve flows into the second decompression layer through the second air groove and the first air groove on the outer wall of the first and second sealing rings, and the gas inside the second decompression layer enters the inner cavity inside the pen barrel through the first groove and the second groove.

[0012] The present invention is further configured such that the opening depth of the first air groove is greater than the thickness of the connecting pipe.

[0013] Preferably, the first air groove connects the gas in the space between the first and second sealing rings with the gas inside the connecting pipe, allowing the gas inside the first pen tip sleeve to flow into the pen barrel.

[0014] The present invention is further configured such that the outer wall diameter of the pressure reducing valve and the connecting pipe is equal to the inner wall diameter of the pen barrel, and a convex ring is fixed on the outer wall of the connecting pipe.

[0015] Preferably, the connecting tube is fixed inside the pen barrel by an interference fit through a protruding ring on its outer wall.

[0016] The present invention is further configured such that the inner wall diameter of the pressure reducing valve is equal to the outer wall diameter of the pen refill, and the bottom outer wall diameter of the pressure reducing valve is smaller than the inner wall diameter of the connecting pipe.

[0017] Preferably, when the pressure reducing valve is fixed on the outer wall of the pen refill, the outer wall of the pen refill and the inner wall of the pressure reducing valve are tightly fitted, so that the gas inside the pen can only flow to the outside through the pressure reducing valve.

[0018] The present invention is further configured such that the inner wall of the first pen tip sleeve is provided with multiple sets of fixing blocks, and the distance between the walls of the multiple sets of fixing blocks is smaller than the outer wall diameter of the pen tip.

[0019] Preferably, when the pen tip is inserted into the first pen tip sleeve from one end, multiple sets of fixing blocks on the inner wall of the first pen tip sleeve press and fix the pen tip.

[0020] In summary, the present invention has the following main advantages: This invention solves the technical problems of numerous components and complex assembly processes in existing marker pen production by incorporating a pressure-reducing valve, a second pen tip sleeve, a pen refill, and a pen barrel. The integrated design of the pen tip and refill allows for simple assembly: inserting the pen refill into the second pen tip sleeve, fitting the pressure-reducing valve onto the outer wall of the refill, and finally inserting the assembled ink dispensing mechanism into the pen barrel, securing it with an interference fit. Furthermore, the integrated production of the pen tip and refill simplifies the production process of the marker pen's ink dispensing mechanism, eliminating the need for separate production processes for these two components and thus reducing the production cost of marker pens.

[0021] This invention simplifies the production process of marker pens by incorporating a pressure-reducing valve, a pen refill, and a second pen tip sleeve. The pressure-reducing valve and the second pen tip sleeve are manufactured using an integrated injection molding process. This integrated structure eliminates the need for separate molding and assembly of the two components, thereby simplifying the production process of marker pens. During assembly, the pen refill is first inserted into the preset mounting position of the pressure-reducing valve and fixed in place. Then, the pressure-reducing valve with the pen refill assembled is fixed into the inner cavity of the pen barrel by an interference fit using a third sealing ring. By reducing the number of steps in the production and assembly process, the production speed of marker pens can be accelerated. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the ink output structure of this utility model; Figure 2 This is a schematic diagram of the ink dispensing mechanism of this utility model. Figure 3 This is a schematic diagram of the marker pen of this utility model; Figure 4 This is a schematic diagram of the pen refill of this utility model; Figure 5 This is a structural diagram of the first pen tip sleeve of this utility model; Figure 6 This is a schematic diagram of the pressure reducing valve structure of this utility model; Figure 7 This is a schematic diagram of the second pen tip sleeve fixing of this utility model; Figure 8 This is a schematic diagram of the through-slot configuration of this utility model; Figure 9 This is the existing internal component structure of a marker pen according to the present invention.

[0023] Explanation of reference numerals in the attached figures: 1. Pressure reducing valve; 101. First pressure reducing layer; 102. Second pressure reducing layer; 103. First groove; 104. Second groove; 105. Spacer; 106. First sealing ring; 107. Second sealing ring; 108. First air groove; 109. Second air groove; 2. First pen tip sleeve; 201. Convex ring; 202. Fixing block; 203. Connecting pipe; 3. Pen tip; 301. Pen refill; 4. Pen barrel; 401. Pen cap; 5. Second pen tip sleeve; 501. Vent hole; 502. Third sealing ring; 503. Through groove; 6. Pen tip; 601. Pen tip sleeve; 602. Main water inlet core; 603. Pressure reducing valve. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] The embodiments of this utility model will be described below based on its overall structure.

[0026] First embodiment: Please refer to Figure 1 — Figure 6The pressure reducing valve 1 includes a first pressure reducing layer 101 and a second pressure reducing layer 102 on its outer wall. The first and second pressure reducing layers 101 and 102 are composed of multiple pressure reducing plates. A spacer 105 is provided between the first and second pressure reducing layers 101 and 102. A first sealing ring 106 and a second sealing ring 107 are fixed to the bottom of the pressure reducing valve 1 in sequence. A first pen tip sleeve 2 is provided at the bottom of the pressure reducing valve 1. A connecting pipe 203 is fixed to the top of the first pen tip sleeve 2. A pen refill 301 is movably installed inside the pressure reducing valve 1, and a pen tip 3 is provided at one end of the pen refill 301. A pen barrel 4 is sleeved on the outside of the pressure reducing valve 1, and a pen cap 401 is installed at one end of the pen barrel 4. This invention solves the technical problems of the large number of parts and complex assembly processes in existing marker pen production. By integrating the pen tip 3 and the pen refill 301 into a single design, when assembling the pressure relief valve 1, pen refill 301, and second pen tip sleeve 2 into the pen barrel 4, the operator only needs to insert the pen refill 301 into the second pen tip sleeve 2, then place the pressure relief valve 1 on the outer wall of the pen refill 301, and finally insert the assembled ink dispensing mechanism into the pen barrel 4 and fix it in the inner cavity of the pen barrel 4 with an interference fit. Furthermore, the integrated production of the pen tip 3 and pen refill 301 simplifies the production process of the marker pen ink dispensing mechanism, eliminating the need for separate production processes for the two types of components, thereby reducing the production cost of marker pens.

[0027] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 The cross-sectional diameter of the pen tip 3 is larger than that of the pen refill 301, which has a cross-sectional diameter of 2mm. The pen tip 3 and the pen refill 301 are integrated into one piece, which makes the ink flow from the pen tip 3 smoother. Furthermore, the cross-sectional diameter of the pen refill 301 is larger than that of the traditional main ink core, which has a cross-sectional diameter of about 1mm. This allows for an expansion of the design range of the pore size of its internal microporous structure, thereby increasing the types of ink that the pen refill 301 can be compatible with.

[0028] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 6 The first pressure relief layer 101, the second pressure relief layer 102 and the spacer 105 are all provided with a first groove 103 on one side of their outer walls. The outer walls of the first sealing ring 106 and the second sealing ring 107 are respectively provided with a second air groove 109 and a first air groove 108. The gas inside the first pen tip sleeve 2 flows into the second pressure relief layer 102 through the second air groove 109 and the first air groove 108 on the outer walls of the first sealing ring 106 and the second sealing ring 107. The gas inside the second pressure relief layer 102 enters the inner cavity of the pen barrel 4 through the first groove 103 and the second groove 104.

[0029] For details regarding the above embodiments, please refer to [link / reference]. Figure 1The opening depth of the first air groove 108 is greater than the thickness of the connecting pipe 203. The first air groove 108 connects the gas in the space between the first sealing ring 106 and the second sealing ring 107 with the gas inside the connecting pipe 203, so that the gas inside the first pen tip sleeve 2 can flow into the pen barrel 4.

[0030] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 2 The outer diameter of the pressure reducing valve 1 and the connecting pipe 203 is equal to the inner diameter of the pen barrel 4. A convex ring 201 is fixed on the outer wall of the connecting pipe 203. The connecting pipe 203 is fixed inside the pen barrel 4 by the convex ring 201 on its outer wall in an interference fit.

[0031] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 6 The inner diameter of the pressure reducing valve 1 is equal to the outer diameter of the pen refill 301. The outer diameter of the bottom of the pressure reducing valve 1 is smaller than the inner diameter of the connecting pipe 203. When the pressure reducing valve 1 is sleeved and fixed on the outer wall of the pen refill 301, the outer wall of the pen refill 301 is tightly fitted with the inner wall of the pressure reducing valve 1, so that the gas inside the pen barrel 4 can only flow to the outside through the pressure reducing valve 1.

[0032] For details regarding the above embodiments, please refer to [link / reference]. Figure 4 and Figure 5 The inner wall of the first pen tip sleeve 2 is provided with multiple sets of fixing blocks 202, and the distance between the walls of the multiple sets of fixing blocks 202 is smaller than the outer diameter of the pen tip 3. When the pen core 301 is inserted into the first pen tip sleeve 2 from one end, the multiple sets of fixing blocks 202 on the inner wall of the first pen tip sleeve 2 squeeze and fix the pen tip 3.

[0033] Second embodiment: Please refer to Figure 7 — Figure 8 The pressure reducing valve 1 is provided with a third sealing ring 502 at the bottom, and the bottom end of the third sealing ring 502 is fixedly connected to the second pen tip sleeve 5. The pressure reducing valve 1 and the second pen tip sleeve 5 are manufactured by an integrated injection molding process. This integrated structure eliminates the process of separately molding and then assembling the two, thereby simplifying the production process of the marker pen. When assembling, it is only necessary to first insert the pen refill 301 into the preset installation position of the pressure reducing valve 1 and fix it, and then assemble the pressure reducing valve 1 with the pen refill 301 assembled into the inner cavity of the pen barrel 4 by means of interference fit through the third sealing ring 502. By reducing the process steps in the production assembly, the production speed of the marker pen is accelerated.

[0034] For details regarding the above embodiments, please refer to [link / reference]. Figure 7 and Figure 8The top of the second pen tip sleeve 5 is provided with a vent hole 501, and the internal structure and size of the second pen tip sleeve 5 are the same as those of the first pen tip sleeve 2. The outer wall of the third sealing ring 502 is provided with a through groove 503, and the through groove 503 extends into the interior of the second pen tip sleeve 5. When the pen cap 401 is removed, the outside gas enters the space around the third sealing ring 502 through the vent hole 501 at the connection between the second pen tip sleeve 5 and the pen barrel 4, and flows into the second pressure relief layer 102 through the through groove 503 on the third sealing ring 502. In addition, the outside gas can also enter the interior of the second pen tip sleeve 5 through the gap between the second pen tip sleeve 5 and the pen tip 3, and flow into the second pressure relief layer 102 through the through groove 503 on the third sealing ring 502, so that the air pressure inside the pen barrel 4 is in a balanced state.

[0035] In practical operation, when assembling and producing marker pens, the following steps are taken: First, the pen refill 301 is inserted into the first pen tip sleeve 2 from the front end of the first pen tip sleeve 2, and the pen tip 3 at the front end of the pen refill 301 is partially inserted into the first pen tip sleeve 2, so that the fixing block 202 inside the first pen tip sleeve 2 presses and fixes the pen tip 3. Then, the pressure relief valve 1 is sleeved on the outer wall of the pen refill 301 located above the first pen tip sleeve 2, and the bottom of the pressure relief valve 1 is inserted into the connecting tube 203 at the top of the first pen tip sleeve 2. Finally, the ink dispensing structure completed by the combination of the pressure relief valve 1, the first pen tip sleeve 2, and the pen refill 301 is fixed in the pen barrel 4 containing ink by the protruding ring 201 on the outer wall of the connecting tube 203 in an interference fit. The protruding structure inside the pen barrel 4 blocks the pressure relief valve 1, so that after the pressure relief valve 1 is assembled into the pen barrel 4, the pressure relief valve 1 will not detach from the first pen tip sleeve 2. When the pen cap 401 is removed from the pen barrel 4, outside air enters the first pen tip sleeve 2 through the gap between the first pen tip sleeve 2 and the pen tip 4. The gas inside the first pen tip sleeve 2 flows into the space between the first sealing ring 106 and the second sealing ring 108 through the first air groove 108 on the second sealing ring 107 at the bottom of the pressure reducing valve 1, and flows into the second pressure reducing layer 102 through the second air groove 109 on the outer wall of the first sealing ring 106. The first groove 103 on the first pressure reducing layer 101, the second pressure reducing layer 102 and the spacer 105 allows the gas flowing into the second pressure reducing layer 102 to flow between the first pressure reducing layer 101 and the second pressure reducing layer 102. Furthermore, the gas flowing into the first pressure reducing layer 101 can enter the pen barrel 4 through the second groove 104 on the multiple pressure reducing plates on the first pressure reducing layer 101. This allows the pen core 301 to smoothly absorb the ink inside the shell 4 when the user writes with the marker, and continuously supply the pen tip 3 with the ink required for writing.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A marker pen, comprising a pressure reducing valve (1), characterized in that: The pressure reducing valve (1) has a first pressure reducing layer (101) and a second pressure reducing layer (102) on its outer wall. The first pressure reducing layer (101) and the second pressure reducing layer (102) are composed of multiple pressure reducing plates. A spacer (105) is provided between the first pressure reducing layer (101) and the second pressure reducing layer (102). A first sealing ring (106) and a second sealing ring (107) are fixed to the bottom of the pressure reducing valve (1) in sequence. A first pen tip sleeve (2) is provided at the bottom of the pressure reducing valve (1). A connecting pipe (203) is fixed to the top of the first pen tip sleeve (2). A pen refill (301) is movably installed inside the pressure reducing valve (1). A pen tip (3) is provided at one end of the pen refill (301). A pen barrel (4) is sleeved on the outside of the pressure reducing valve (1). A pen cap (401) is installed at one end of the pen barrel (4).

2. A marker pen according to claim 1, characterized in that: The cross-sectional diameter of the pen tip (3) is greater than the cross-sectional diameter of the pen core (301), and the cross-sectional diameter of the pen core (301) is set to 2 mm.

3. A marker pen according to claim 1, characterized in that: The first pressure relief layer (101), the second pressure relief layer (102) and the spacer (105) are all provided with a first groove (103) on one side of their outer walls. The first sealing ring (106) and the second sealing ring (107) are respectively provided with a second air groove (109) and a first air groove (108).

4. A marker pen according to claim 3, characterized in that: The opening depth of the first air groove (108) is greater than the thickness of the connecting pipe (203).

5. A marker pen according to claim 1, characterized in that: The outer diameter of the pressure reducing valve (1) and the connecting pipe (203) is equal to the inner diameter of the pen barrel (4), and a protruding ring (201) is fixed on the outer wall of the connecting pipe (203).

6. A marker pen according to claim 1, characterized in that: The inner diameter of the pressure reducing valve (1) is equal to the outer diameter of the pen refill (301), and the bottom outer diameter of the pressure reducing valve (1) is smaller than the inner diameter of the connecting pipe (203).

7. A marker pen according to claim 1, characterized in that: The inner wall of the first pen tip sleeve (2) is provided with multiple sets of fixing blocks (202), and the distance between the walls of the multiple sets of fixing blocks (202) is smaller than the outer wall diameter of the pen tip (3).

8. A marker pen according to claim 1, characterized in that: The pressure reducing valve (1) is provided with a third sealing ring (502) at the bottom, and the bottom end of the third sealing ring (502) is fixedly connected to the second pen tip sleeve (5).

9. A marker pen according to claim 8, characterized in that: The second pen tip sleeve (5) has a vent hole (501) at the top, and the internal structure and size of the second pen tip sleeve (5) are the same as those of the first pen tip sleeve (2).

10. A marker pen according to claim 8, characterized in that: The outer wall of the third sealing ring (502) is provided with a through groove (503), and the through groove (503) extends into the interior of the second pen tip sleeve (5).

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