Abstract
A multi-posture bedside writing pen includes a pen shell, a pen tip holder, a fiber rod and a fiber ink storage tube. The fiber ink storage tube is connected with the pen shell and located in the pen shell. The pen tip holder is connected with one end of the pen shell. The pen tip holder is axially provided with a through hole. The fiber rod is inserted into the through hole, one end of the fiber rod is exposed outside the pen tip holder, and an other end of the fiber rod is inserted into the fiber ink storage tube. A first gap is provided between the pen tip holder and the fiber ink storage tube.
Claims
1. A multi-posture bedside writing pen, comprising a pen shell, a pen tip holder, a fiber rod and a fiber ink storage tube, wherein the fiber ink storage tube is connected with the pen shell and located in the pen shell, the pen tip holder is connected with one end of the pen shell, the pen tip holder is axially provided with a through hole, the fiber rod is inserted into the through hole, one end of the fiber rod is exposed outside the pen tip holder, and an other end of the fiber rod is inserted into the fiber ink storage tube, a first gap is provided between the pen tip holder and the fiber ink storage tube, the pen tip holder is inserted into one end of the pen shell, and an outer peripheral wall of the fiber rod located in the first gap is coated with a leak-proof membrane.
2. The multi-posture bedside writing pen according to claim 1, wherein a second gap is provided between one end of the leak-proof membrane close to the fiber ink storage tube and the fiber ink storage tube, and a width a of the second gap is less than 1 millimeter.
3. The multi-posture bedside writing pen according to claim 1, wherein the leak-proof membrane is integrally formed with the fiber rod.
4. The multi-posture bedside writing pen according to claim 1, wherein the pen shell comprises a cylindrical section and a first tapered section, the first tapered section is connected with the cylindrical section, and the first tapered section is located between the cylindrical section and the pen tip holder, a diameter of the first tapered section gradually decreases from one end close to the cylindrical section to one end away from the cylindrical section, an outer diameter of the fiber ink storage tube is smaller than a maximum inner diameter of the first tapered section and larger than a minimum inner diameter of the first tapered section, and an outer peripheral wall of one end of the fiber ink storage tube close to the pen tip holder is in interference fit with an inner wall of the first tapered section.
5. The multi-posture bedside writing pen according to claim 4, wherein the pen shell further comprises a second tapered section, one end of the second tapered section is connected with the first tapered section, a diameter of the second tapered section gradually decrease from one end close to the first tapered section to one end away from the first tapered section, a flange is arranged on an outer peripheral wall of the pen tip holder along a circumferential direction, and the pen tip holder is inserted into an other end of the second tapered section and the flange abuts against the other end of the second tapered section.
6. The multi-posture bedside writing pen according to claim 1, wherein an other end of the pen shell is detachably connected with a back cover.
7. The multi-posture bedside writing pen according to claim 1, wherein the one end of the pen shell is sleeved with a pen cap, and the pen tip holder and a pen tip of the fiber rod are both located in the pen cap.
8. The multi-posture bedside writing pen according to claim 1, wherein a distance b between the one end of the fiber ink storage tube close to the pen tip holder and the one end of the fiber rod away from the fiber ink storage tube is less than 5 millimeters.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is a schematic structural diagram of a pen shell in the present application.
[0015] FIG. 2 is a partial enlarged view of part A in FIG. 1.
[0016] FIG. 3 is a schematic diagram of an overall structure of the present application.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] A multi-posture bedside writing pen of the present application will be described in detail with reference to the attached drawings.
[0018] As shown in FIG. 1, FIG. 2 and FIG. 3, a multi-posture bedside writing pen includes a pen shell 1, a pen tip holder 2, a fiber rod 3 and a fiber ink storage tube 4. The fiber ink storage tube 4 is connected with the pen shell 1 and located in the pen shell 1. The pen tip holder 2 is inserted into one end of the pen shell 1, and the pen tip holder 2 is in interference fit with one end of the pen shell 1. The pen shell 1 has a hollow structure. The pen shell 1 includes a cylindrical section 101, a first tapered section 102 and a second tapered section 103. The first tapered section 102 is connected with the cylindrical section 101. The first tapered section 102 is located between the cylindrical section 101 and the pen tip holder 2. The diameter of the first tapered section 102 gradually decreases from one end close to the cylindrical section 101 to one end away from the cylindrical section 101. The outer diameter of the fiber ink storage tube 4 is smaller than the maximum inner diameter of the first tapered section 102 and larger than the minimum inner diameter of the first tapered section 102. The outer peripheral wall of one end of the fiber ink storage tube 4 close to the pen tip holder 2 is in interference fit with the inner wall of the first tapered section 102. One end of the second tapered section 103 is connected with the first tapered section 102, and the diameter of the second tapered section 103 gradually decreases from one end close to the first tapered section 102 to one end away from the first tapered section 102. A flange 9 is arranged on the outer peripheral wall of the pen tip holder 2 in the circumferential direction. The pen tip holder 2 is inserted into the other end of the second tapered section 103. The flange 9 abuts against the other end of the second tapered section 103. As shown in FIG. 1, the cylindrical section 101, the first tapered section 102 and the second tapered section 103 are sequentially arranged from top to bottom. The upper and lower ends of the first tapered section 102 are respectively connected with the lower end of the cylindrical section 101 and the upper end of the second tapered section 103. The inner diameter and outer diameter of the first tapered section 102 and the inner diameter and outer diameter of the second tapered section 103 decrease gradually from top to bottom. The whole fiber ink storage tube 4 is located in the cylindrical section 101 and the first tapered section 102. Preferably, the outer peripheral wall of the lower end of the fiber ink storage tube 4 is clamped on the inner wall close to the lower end of the first tapered section 102, while the pen tip holder 2 is inserted into the lower end face of the second tapered section 103, and the upper end face of the flange 9 abuts against the lower end face of the second tapered section 103. In addition, the outer peripheral wall of the flange 9 is also a tapered surface, and the slope of the outer peripheral wall of the flange 9 is preferably the same as the slope of the second tapered section 103, and the outer peripheral wall of the second tapered section 103 is flush with the outer peripheral wall of the flange 9. In other words, there is no offset between the outer peripheral wall of the second tapered section 103 and the outer peripheral wall of the flange 9.
[0019] As shown in FIG. 1 and FIG. 2, the pen tip holder 2 is axially provided with a through hole 5, and the fiber rod 3 is inserted into the through hole 5, and one end of the fiber rod 3 is exposed outside the pen tip holder 2, and the other end of the fiber rod 3 is inserted into the fiber ink storage tube 4. In other words, the upper end of the fiber rod 3 is inserted into the fiber ink storage tube 4, while the lower end of the fiber rod 3 is exposed outside the pen tip holder 2 as a writing pen tip. The upper end of the fiber rod 3 is preferably tapered for easily inserting into the fiber ink storage tube 4, and the lower end of the fiber rod 3 is preferably arch-shaped for convenient writing. A first gap 6 is provided between the pen tip holder 2 and the fiber ink storage tube 4. The pen tip holder 2 is made of a metal material. By arranging the metal pen tip holder 2 with a thin-walled structure and with certain elasticity, the fiber rod 3 is able to be fixed stably and it is easy to insert and remove the fiber rod 3.
[0020] As shown in FIG. 2, the outer peripheral wall of the fiber rod 3 located in the first gap 6 is coated with a leak-proof membrane 7. In this embodiment, the lower end of the leak-proof membrane 7 abuts against the upper end of the pen tip holder 2. A second gap 8 is provided between one end of the leak-proof membrane 7 close to the fiber ink storage tube 4 and the fiber ink storage tube 4. The width a of the second gap 8 is less than 1 millimeter. In other words, the upper end of the leak-proof membrane 7 does not contact with the lower end of the fiber ink storage tube 4, leaving the second gap 8. On the premise that the upper end of the leak-proof membrane 7 is not in contact with the lower end of the fiber ink storage tube 4, the width a of the second gap 8 is selected as small as possible, preferably less than 0.5 millimeter, so as to ensure the stable ink supply to the fiber rod 3 by the fiber ink storage tube 4. The leak-proof membrane 7 is integrally formed with the fiber rod 3.
[0021] As shown in FIG. 1 and FIG. 3, the other end of the pen shell 1 is detachably connected with a back cover 10, and one end of the pen shell 1 is sleeved with a pen cap 11, and the pen tip holder 2 and the pen tip of the fiber rod 3 are both located in the pen cap 11. In other words, the upper end of the pen shell 1 is connected with the back cover 10, and the lower end of the pen shell 1 is sleeved with the pen cap 11 to protect the pen tip holder 2 and the pen tip of the fiber rod 3.
[0022] When writing is done in a lying posture, the excessively long transport distance will make the speed of transporting ink by capillary action fail to catch up with the ink consumption speed caused by people's writing. Therefore, the transport distance of ink is capable of being shortened by controlling the distance between the fiber ink storage tube 4 and the pen tip of the fiber rod 3, so as to ensure uninterrupted writing. As shown in FIG. 1 and FIG. 2, the distance b between one end of the fiber ink storage tube 4 close to the pen tip holder 2 and one end of the fiber rod 3 away from the fiber ink storage tube 4 is less than 5 millimeters, that is, the distance b between the lower end of the fiber ink storage tube 4 and the lower end of the fiber rod 3 is less than 5 millimeters.
[0023] As a writing refill, the fiber rod 3, the end of which is exposed outside the pen tip holder 2, is the pen tip, and the fiber ink storage tube 4 stores ink. The fiber rod 3 is made of carbon fiber material with capillary holes. By using the siphon bionics principle, it is able to overcome the limitation of gravity ink injection of ordinary pens, realize multi-posture writing when people read at the bedside, and has a simple overall structure, greatly reducing the production cost.
[0024] The embodiment of the present application has been described in detail above with reference to the attached drawings, but the present application is not limited to the above one embodiment, and all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.
