Ink-explosion-proof direct-liquid type mark pen
By designing valve groups and pore structures in direct-liquid markers to control ink flow, the problem of ink bursting in high-temperature and high-altitude environments was solved, achieving a stable ink supply effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHAOQING SITA STATIONARY COMMODITY CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-05-12
AI Technical Summary
Direct-liquid markers are prone to ink overflow due to gas expansion in high-temperature or high-altitude environments, causing ink bursting and affecting portability and use.
An explosion-proof ink structure was designed, comprising a pen barrel, a pen tip, a pen nib, and a valve assembly. By setting an ink overflow chamber and a retainer between the pen nib and the ink chamber, the ink flow is controlled by the porosity and capillary effect, preventing ink from overflowing under pressure.
It effectively prevents ink from overflowing in high-temperature or high-altitude environments, avoiding dirt and waste, and maintaining a continuous ink supply.
Smart Images
Figure CN224224798U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of marker technology, and in particular to a direct-liquid marker with explosion-proof ink. Background Technology
[0002] Direct-liquid markers store ink in liquid form within the pen barrel. The ink has excellent fluidity. When a person carries or transports a marker, the gas inside the ink reservoir may expand due to increased ambient temperature or altitude. This gas expansion can cause a large amount of ink to overflow from the nib or tip, resulting in ink bursting, which causes dirt and waste.
[0003] Therefore, there is an urgent need to design a direct-liquid marker that can prevent ink bursts while maintaining good ink supply continuity. Summary of the Invention
[0004] The technical solution of this utility model is as follows:
[0005] A direct-liquid marker with explosion-proof ink includes a barrel, a nib, and a tip, characterized in that: the barrel is a hollow structure with an open end and an ink chamber inside; the nib is airtightly connected to the open side of the barrel; and the tip is connected to the nib.
[0006] A valve assembly is provided between the pen tip and the ink chamber. The valve assembly includes an ink overflow chamber and a retainer. The retainer is airtightly connected to the pen barrel and / or the pen tip. An ink overflow hole is provided at one end of the retainer near the ink chamber, and a fixing hole is provided at the other end away from the ink chamber. The ink overflow chamber is located between the ink overflow hole and the fixing hole.
[0007] The pen tip is connected to the ink cavity after passing through the ink overflow hole and the fixing hole. The pen tip and the fixing hole are interference fit. There is a pore between the pen tip and the ink overflow hole so that the ink in the ink cavity can flow to the ink overflow cavity under pressure.
[0008] Preferably, the pen tip includes a separate writing end and an ink guide core. After the ink guide core passes through the ink overflow hole and the fixing hole, one end of the ink guide core is attached to the pen tip, and the other end is located in the ink cavity. The ink guide core is interference-fitted with the fixing hole, and a pore is provided between the ink guide core and the ink overflow hole to allow the ink in the ink cavity to flow to the ink overflow cavity under pressure.
[0009] Preferably, the cross-section of the ink overflow hole is polygonal, the sides of the polygon are interference-fitted with the sidewall of the pen tip, and there are gaps between the corners of the polygon and the sidewall of the pen tip.
[0010] Preferably, a first protrusion extending into the ink overflow cavity is provided on the outer side of the fixing hole, and a second protrusion extending into the ink overflow cavity is provided on the outer side of the ink overflow hole. The first protrusion and the second protrusion are fitted together with a gap, and the first protrusion does not fit into the ink overflow hole.
[0011] Preferably, a plurality of ribs are provided between the first boss and the second boss, and a gap is provided between the ribs and the first boss or the second boss.
[0012] Preferably, the distance of the gap is 0.05 to 0.25 mm.
[0013] Preferably, a vent hole communicating with the outside atmosphere is provided on the outer side of the ink overflow cavity near the ink overflow hole.
[0014] Preferably, an ink-absorbing body is provided on the outer side of the pen tip between the valve assembly and the pen tip.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] The reasonable structural design enables the direct-liquid marker to have good ink supply continuity while effectively preventing ink bursts. Attached Figure Description
[0017] Figure 1 This is the front view of this utility model;
[0018] Figure 2 for Figure 1 AA section view;
[0019] Figure 3 for Figure 2 BB cross-sectional view;
[0020] Figure 4 for Figure 2 CC section view;
[0021] Figure 5 This is a three-dimensional sectional view of valve assembly 50.
[0022] Explanation of reference numerals in the attached drawings: Pen barrel 10, ink chamber 11, pen tip 20, pen nib 30, writing end 31, ink core 32, ink-absorbing body 40, valve assembly 50, card holder 51, ink overflow hole 52, fixing hole 53, vent hole 54, first boss 55, second boss 56, rib 57, ink overflow chamber 58, gap D. Detailed Implementation
[0023] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.
[0024] It should be noted that when a component is said to be "fixed" to another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," and similar expressions used in this document are for illustrative purposes only.
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:
[0027] like Figures 1-5 As shown, a direct-liquid marker with explosion-proof ink includes a pen barrel 10, a pen tip 20 and a pen nib 30. The pen barrel 10 is a hollow structure with one end open and an ink chamber 11 inside. The pen tip 20 is airtightly connected to the open side of the pen barrel 10, and the pen nib 30 is connected to the pen tip 20.
[0028] A valve assembly 50 is provided between the pen tip 30 and the ink chamber 11. The valve assembly 50 includes an ink overflow chamber 58 and a retainer 51. The retainer 51 is airtightly connected to the pen barrel 10 and / or the pen tip 20. An ink overflow hole 52 is provided at one end of the retainer 51 near the ink chamber 11, and a fixing hole 53 is provided at the other end away from the ink chamber 11. The ink overflow chamber 58 is located between the ink overflow hole 52 and the fixing hole 53.
[0029] The pen tip 30 passes through the ink overflow hole 52 and the fixing hole 53 and then connects to the ink cavity 11. The pen tip 30 and the fixing hole 53 are interference-fitted. A gap is provided between the pen tip 30 and the ink overflow hole 52 to allow the ink in the ink cavity 11 to flow to the ink overflow cavity 58.
[0030] In this embodiment, the ink is stored in liquid form in the ink chamber 11, and gas inevitably exists in the ink chamber 11. When the air pressure inside the ink chamber 11 is greater than the ambient atmospheric pressure under high temperature, mountain climbing, or high-altitude conditions, the ink, under pressure, flows through the gap between the pen tip 30 and the overflow hole 52 into the overflow chamber 58 for storage, preventing it from bursting out of the pen tip 20 or pen nib 30, causing dirt and waste. The volume of the overflow chamber 58 can be calculated based on the amount of ink stored and the relationship between air volume and temperature and air pressure.
[0031] Based on the ink's fluidity and surface tension, a reasonable pore size can be set to prevent ink from flowing into the ink overflow chamber 58 under no pressure or low pressure.
[0032] Depending on manufacturing process and cost requirements, valve assembly 50 can be designed as a separate unit, such as... Figure 5 As shown.
[0033] Furthermore, the pen tip 30 includes a separate writing end 31 and an ink guide 32. The ink guide 32 passes through the ink overflow hole 52 and the fixing hole 53. One end of the ink guide 32 is attached to the pen tip 30, and the other end is located in the ink cavity 11. The ink guide 32 is interference-fitted with the fixing hole 53, and a gap is provided between the ink guide 32 and the ink overflow hole 52 to allow the ink in the ink cavity 11 to flow to the ink overflow cavity 58.
[0034] In this embodiment, the pen tip is relatively long. To improve the manufacturability of the pen tip 30, the pen tip 30 adopts a separate design of writing end 31 and ink core 32.
[0035] Furthermore, the cross-section of the ink overflow hole 52 is polygonal, the sides of the polygon are interference-fitted with the sidewall of the pen tip 30, and there are gaps between the corners of the polygon and the sidewall of the pen tip 30.
[0036] In this embodiment, by setting the cross-section of the ink overflow hole 52 to a hexagon, while partially interfering with the fit, the pores for ink to pass through can be retained, thereby improving the stability of the water-guiding core 32.
[0037] Furthermore, such as Figure 5 As shown, a first boss 55 extending into the ink overflow cavity 58 is provided on the outer side of the fixing hole 53, and a second boss 56 extending into the ink overflow cavity 58 is provided on the outer side of the ink overflow hole 52. The first boss 55 and the second boss 56 are fitted together with a gap, and the first boss 55 does not fit into the ink overflow hole 52.
[0038] In this embodiment, the first boss 55 and the second boss 56 are provided to reduce the flow of ink in the ink overflow cavity 58.
[0039] A certain distance is maintained between the first protrusion 55 and the ink overflow hole 52 to prevent the first protrusion 55 from fitting together with the ink overflow hole 52. This allows the ink in the ink overflow cavity 58 to flow to the ink guide core 32 preferentially under the capillary effect when writing, rather than the ink in the ink cavity 11.
[0040] Furthermore, a plurality of ribs 57 are provided between the first boss 55 and the second boss 56, and a gap D is provided between the ribs 57 and the first boss 55 or the second boss 56.
[0041] By setting the ribs 57, the flow of ink in the ink overflow cavity 58 can be further reduced, and by using a reasonable gap size, a capillary effect can be formed, allowing the ink in the ink overflow cavity 58 to flow back into the water inlet core 32 under the capillary effect.
[0042] Furthermore, the gap D is 0.05–0.25 mm.
[0043] Furthermore, a vent 54 communicating with the external atmosphere is provided on the outer side of the ink overflow cavity 58 near the ink overflow hole 52.
[0044] The vent 54 is used to keep the ink overflow hole 52 consistent with the external atmospheric pressure, so that when the air pressure in the ink chamber 11 is too high in the ink overflow chamber 58, the ink can flow smoothly from the ink overflow hole 52 into the ink overflow chamber 58.
[0045] Furthermore, an ink-absorbing body 40 is provided on the outside of the pen tip 30 between the valve assembly 50 and the pen tip 20.
[0046] The ink absorber 40 is a porous structure such as sponge or cotton yarn. It absorbs ink when there is too much ink on the pen tip 30 and releases ink when there is too little ink, thus maintaining the stability of the ink during writing.
[0047] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. A direct-liquid marker with explosion-proof ink, comprising a barrel (10), a nib (20), and a tip (30), Its features are: The pen barrel (10) is a hollow structure with one end open and an ink chamber (11) inside. The pen tip (20) is airtightly connected to the open side of the pen barrel (10), and the pen tip (30) is connected to the pen tip (20). A valve assembly (50) is provided between the pen tip (30) and the ink chamber (11). The valve assembly (50) includes an ink overflow chamber (58) and a retainer (51). The retainer (51) is airtightly connected to the pen barrel (10) and / or the pen tip (20). An ink overflow hole (52) is provided at one end of the retainer (51) near the ink chamber (11), and a fixing hole (53) is provided at the other end away from the ink chamber (11). The ink overflow chamber (58) is located between the ink overflow hole (52) and the fixing hole (53). The pen tip (30) passes through the ink overflow hole (52) and the fixing hole (53) and then communicates with the ink cavity (11). The pen tip (30) and the fixing hole (53) are interference fit. A pore is provided between the pen tip (30) and the ink overflow hole (52) to allow the ink in the ink cavity (11) to flow to the ink overflow cavity (58) under pressure.
2. The direct-liquid marker with explosion-proof ink as described in claim 1, characterized in that: The pen tip (30) includes a separate writing end (31) and a water inlet (32). The water inlet (32) passes through the ink overflow hole (52) and the fixing hole (53). One end of the water inlet (32) is attached to the pen tip (30), and the other end is located in the ink cavity (11). The water inlet (32) is interference-fitted with the fixing hole (53). A pore is provided between the water inlet (32) and the ink overflow hole (52) to allow the ink in the ink cavity (11) to flow to the ink overflow cavity (58) under pressure.
3. The direct-liquid marker with explosion-proof ink as described in claim 1, characterized in that: The cross-section of the ink overflow hole (52) is polygonal, the sides of the polygon are interference-fitted with the sidewall of the pen tip (30), and there are gaps between the corners of the polygon and the sidewall of the pen tip (30).
4. The direct-liquid marker with explosion-proof ink as described in claim 1, characterized in that: The outer side of the fixing hole (53) is provided with a first boss (55) extending into the ink overflow cavity (58). A second protrusion (56) extending into the ink overflow cavity (58) is provided on the outside of the ink overflow hole (52). The first protrusion (55) and the second protrusion (56) are fitted together with a gap, and the first protrusion (55) does not fit into the ink overflow hole (52).
5. A direct-liquid marker with explosion-proof ink as described in claim 4, characterized in that: A plurality of ribs (57) are provided between the first boss (55) and the second boss (56), and a gap (D) is provided between the ribs (57) and the first boss (55) or the second boss (56).
6. The direct-liquid marker with explosion-proof ink as described in claim 5, characterized in that: The distance of the gap (D) is 0.05 to 0.25 mm.
7. The direct-liquid marker with explosion-proof ink as described in claim 1, characterized in that: The ink overflow cavity (58) is provided with a vent (54) on the outer side near the ink overflow hole (52) to communicate with the outside atmosphere.
8. The direct-liquid marker with explosion-proof ink as described in claim 1, characterized in that: An ink-absorbing body (40) is provided on the outside of the pen tip (30) between the valve assembly (50) and the pen tip (20).