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CN-122008717-A - Writing pen and ink supply method thereof

CN122008717ACN 122008717 ACN122008717 ACN 122008717ACN-122008717-A

Abstract

The invention relates to a writing pen and an ink supply method thereof, wherein the writing pen comprises a pen point, a pen tube and a pen tail, the pen tube is a hollow tube body, a first capillary tube and a second capillary tube are arranged in the pen tube, a gap between the pen tube and the first capillary tube and between the pen tube and the second capillary tube forms an ink storage cavity, one end of the first capillary tube, which is close to the pen tail, is open, one end, which is close to the pen point, is closed, the second capillary tube is positioned between the first capillary tube and the pen point and is fixedly connected with the pen point, the second capillary tube is in closed connection with the first capillary tube, one end, which is close to the first capillary tube, is closed, a first micro slit is formed in the upper side wall, which is close to one end of the first capillary tube, and a second micro slit is formed in the upper side wall, which is close to one end of the first capillary tube. The writing pen has the characteristics of simple structure, easy manufacture, direct use of pigment ink, water resistance, sun protection and no feathering.

Inventors

  • SONG SHUNYI

Assignees

  • 宋顺义

Dates

Publication Date
20260512
Application Date
20260408

Claims (10)

  1. 1. The writing pen is characterized by comprising a pen point, a pen tube and a pen tail, wherein the pen tube is a hollow tube body, a first capillary tube and a second capillary tube are arranged in the pen tube, and an ink storage cavity is formed between the pen tube and a gap between the first capillary tube and the second capillary tube; The first capillary tube is opened at one end close to the pen tail, and one end close to the pen point is closed; the second capillary is positioned between the first capillary and the pen point and is fixedly connected with the pen point, and the second capillary is in closed connection with the first capillary; The side wall of the first capillary tube above one end of the pen point is provided with a first micro slit, and the side wall of the second capillary tube above one end of the first capillary tube is provided with a second micro slit.
  2. 2. The stylus of claim 1, wherein the first capillary tube has a smaller diameter than the second capillary tube.
  3. 3. The pen of claim 1 or 2, wherein the first capillary tube has an inner diameter of 0.3-0.7mm and an outer diameter of 0.5-0.9mm.
  4. 4. A pen as claimed in any one of claims 1 to 3 wherein the second capillary has an inner diameter of 0.8 to 1.5mm and an outer diameter of 1.0 to 1.7mm.
  5. 5. The pen of any one of claims 1-4, wherein the first microslit is spaced from the closed end of the first capillary by a distance of 1/90 to 1/85 of the length of the first capillary; Preferably, the distance between the second microslit and the closed end of the second capillary is 1/50 to 1/45 of the length of the second capillary.
  6. 6. The pen of any one of claims 1 to 5, wherein the first microslit has a length of 2-4mm and a width of 40-120 μm.
  7. 7. The pen of any one of claims 1 to 6, wherein the second microslit has a length of 2-4mm and a width of 40-120 μm.
  8. 8. The pen of any one of claims 1-7, wherein the length of the first capillary tube is 70-130mm; Preferably, the length of the second capillary is 5-25mm.
  9. 9. A method of supplying ink to a writing pen as claimed in any one of claims 1 to 8, wherein the method of supplying ink comprises: When writing, the ink stored in the ink storage cavity flows to the pen point through the second capillary under the action of gravity, and the ink flows out to enable negative pressure to be generated in the ink storage cavity; When writing is stopped, the capillary force of the first microslit is utilized to prevent the ink from leaking; When the ink storage device is inverted, the capillary force of the second micro-slit is utilized to prevent air from entering the ink storage cavity from the pen point.
  10. 10. The ink supply method according to claim 9, wherein the surface tension of the ink is 25 to 40mN/m.

Description

Writing pen and ink supply method thereof Technical Field The invention relates to the technical field of writing tools, in particular to a writing pen and an ink supply method thereof. Background Pens are writing instruments commonly used in everyday life, and are of various types, such as writing brush, sign pen, pencil, and ink pen, etc., according to various writing needs. At present, a relatively common pen on the market is a direct liquid type ink pen, which comprises a pen holder with a first through cavity and a second through cavity which are mutually communicated, wherein ink is filled in the first through cavity, an ink storage core made of fiber materials is arranged in the second through cavity, a pen point is inserted into one end of the pen holder, the inner end part of the pen point is inserted into the ink storage core in the second through cavity, the ink storage core is used for storing the ink and conveying the ink to the pen point, and the pen point is wetted by the ink, so that the effect that the pen point can write is achieved. For example, CN221366364U discloses a direct liquid type ink pen, which comprises a pen holder and a pen cover, wherein the pen holder comprises a containing part, a fixing part connected with one end of the containing part and an ink storage part connected with the other end of the containing part, a mounting cavity and an ink storage core positioned in the mounting cavity are arranged in the containing part, an ink cavity communicated with the mounting cavity and an ink guiding core inserted into the ink storage core are arranged in the ink storage part, and a pen point is arranged on the side surface of the fixing part, away from the containing part, of the fixing part; In addition, the common pens in the market also have neutral pens, have the advantages of fountain pens and oil-based ball-point pens, have comfortable writing handfeel, lower ink viscosity and increase substances easy to lubricate, and the viscosity of a writing medium is between that of water and oil, so that the pen is smoother than that of a common oil-based ball-point pen, and is an upgrading product of the oil-based ball-point pen. For example, CN114312104B discloses a gel ink pen, comprising a pen holder, at least two gel ink pen replacing cores are provided in the pen holder, a set of driving component is provided in the pen holder for each gel ink pen replacing core, each set of driving component comprises a pen core driving piece and a driving piece limiting structure, the pen core driving piece is connected with the tail end of the gel ink pen replacing core, a manual part extending out of the pen holder is further provided on the pen core driving piece, the manual part is used for driving the pen core driving piece to slide along the pen holder, the pen core driving piece is used for driving the gel ink pen replacing core to extend or retract from the pen point of the pen holder, and the driving piece limiting structure is used for limiting the pen core driving piece, so that the gel ink pen replacing core maintains the state of extending out of the pen point or shrinking in the pen point. The gel pen can adopt the common gel pen to replace the core to realize the double-color or multi-color gel pen, does not need to adopt the core replacement with a special design structure, and is convenient to use. However, the traditional gel pen adopts a silicone oil plugging technology, pigment ink can be used, writing marks have the advantages of water resistance, sun protection and no feathering, but silicone oil is easy to emulsify to cause ink break, and the direct liquid type gel pen adopts an ink regulator with a complex structure, so that writing is smooth, the occupied space is large, only dye ink can be used, and the writing marks are not water-proof, sun protection and easy feathering. At present, there is no writing pen which has the advantages of both the neutral pen and the liquid pen, so that a new writing pen is needed to be provided. Disclosure of Invention In order to solve the technical problems, the invention provides a writing pen and an ink supply method thereof. The writing pen has the advantages of simple structure, easy manufacture, direct use of pigment ink, water resistance, sun protection and no feathering, continuous and uniform ink output is realized through a gravity driving and constant negative pressure mechanism, the writing experience is comparable to that of a direct liquid type fountain pen, the writing on an airplane can be realized due to automatic pressure regulation, and the defect that the traditional neutral pen cannot write on the airplane continuously due to the change of atmospheric pressure is overcome. To achieve the purpose, the invention adopts the following technical scheme: the invention provides a writing pen, which comprises a pen point, a pen tube and a pen tail, wherein the pen tube is a hollow tube body, a first capillary tube and a se