Integrated aqueous pen water guiding core

Abstract

The present invention discloses an integrated water-based pen water guiding core, which comprises a core body integrally injection-molded. The core body includes a core body head, a needle tube seat and a water guiding section which are connected in sequence from front to back. A water guiding groove is formed on the side surface of the core body, and the water guiding groove extends axially backward from the front end surface of the core body head to the water guiding section. The water-based pen water guiding core in the present invention has a reasonable structure, can be formed by one injection molding, omits the assembly process, is beneficial to processing and production, and ensures the stability of quality.

Description

Technical Field

[0001] The present invention relates to the field of the structural design of the ink guiding core of a water-based pen, and particularly to an integrated water-based pen ink guiding core. Background Art

[0002] A water-based pen characterized by a ball-shaped pen tip and a refill that does not require re-inking is widely used because of its convenience, cleanliness, and smooth writing. The refill has an ink guiding core. The rear end of the ink guiding core extends into the ink reservoir, and the front end is inserted into the pen tip. When in use, the ink in the ink reservoir can be introduced into the pen tip through the ink guiding core. The existing ink guiding core for water-based pens is usually a two-stage ink guiding core, that is, it is made by inserting one end of a polyester fiber polymerized ink guiding core into an extruded star-shaped ink guiding fine core. When in use, the polyester fiber polymerized ink guiding core drains the ink from the rear end to the front end, and then transports it into the ball pen tip through the extruded star-shaped ink guiding fine core connected to the front end to complete writing. When manufacturing this kind of ink guiding core, due to the small size of the components, the assembly of the polyester fiber polymerized ink guiding core and the extruded star-shaped ink guiding fine core is inconvenient, which is not conducive to improving the production efficiency of the ink guiding core and also causes unstable quality. Summary of the Invention

[0003] In view of this, the present invention aims to provide an integrated water-based pen ink guiding core that is conducive to production.

[0004] The technical solution for achieving the object of the present invention is as follows:

[0005] An integrated water-based pen ink guiding core includes a core body integrally injection-molded. The core body includes a core body head, a needle tube seat, and an ink guiding section that are connected in sequence from front to back;

[0006] An ink guiding groove is formed on the side surface of the core body, and the ink guiding groove extends axially backward from the front end surface of the core body head to the ink guiding section.

[0007] In the above technical solution, a water storage groove is formed on the outer walls of the core body head and the needle tube seat, and the water storage groove is communicated with the ink guiding groove.

[0008] In the above technical solution, the water storage groove is an annular groove, an arc groove, or a star groove.

[0009] In the above technical solution, the cross-sectional shape of the core body head is an ellipse, a star, or a polygon.

[0010] In the above technical solution, a first buffer and stabilization structure for buffering ink is provided on the ink guiding section.

[0011] In the above technical solution, the first buffer and stabilization structure includes a plurality of first axial protrusions formed on the side wall of the ink guiding section and arranged at intervals in the circumferential direction, and a first axial groove is formed between adjacent first axial protrusions.

[0012] In the above technical solution, the first buffer and stabilizing structure includes a slow-flow surface formed on the side surface of the water guiding section and arranged axially along the water guiding section, and the slow-flow surface is an uneven rough surface.

[0013] In the above technical solution, a second buffer and stabilizing structure for buffering ink is provided on the syringe holder.

[0014] In the above technical solution, the second buffer and stabilizing structure includes a plurality of second axial ridges arranged circumferentially and spaced apart on the side wall of the syringe holder, and second axial grooves are formed between adjacent second axial ridges.

[0015] In the above technical solution, an axial balance groove is provided on the head of the core body or / and the syringe holder.

[0016] In the above technical solution, the core body is made of plastic.

[0017] The present invention has positive effects: The water guiding core structure in the present invention is reasonable. During production, an integrated core body of the water guiding core is directly formed by injection molding, eliminating the two-stage assembly process, which is beneficial to production and helps improve the stability of product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of an integrated water-based pen water guiding core in the present invention;

[0019] Figure 2 is viewed from another angle Figure 1 schematic structural diagram of the integrated water-based pen water guiding core shown;

[0020] Figure 3 is Figure 1 enlarged view of part A in;

[0021] Figure 4 is Figure 1 cross-sectional view taken along line B-B in;

[0022] Figure 5 is a schematic structural diagram of a water-based pen refill.

[0023] The reference numerals shown in the drawings are: 1 - head of the core body; 11 - balance groove; 2 - syringe holder; 21 - second axial ridge; 22 - second axial groove; 3 - water guiding section; 31 - first axial ridge; 32 - first axial groove; 33 - slow-flow surface; 4 - water guiding groove; 5 - water storage tank; 6 - ball pen tip; 7 - pen tip holder; 8 - water storage device. DETAILED DESCRIPTION OF THE INVENTION

[0024] The following describes the specific structure of the integrated water-based pen water guiding core in the present invention with reference to the drawings in the specification:

[0025] Example 1

[0026] An integrated water-based pen water guiding core, as Figures 1 to 4 shown, includes a core body integrally injection-molded. The core body includes a core body head 1, a needle tube seat 2, and a water guiding section 3 that are connected in sequence from front to back; a water guiding groove 4 is provided on the side surface of the core body, and the water guiding groove 4 extends axially backward from the front end surface of the core body head 1 to the water guiding section 3. The structure of the water guiding core in this embodiment is reasonable. When producing, the core body is directly integrally formed by injection molding, eliminating the assembly process, which is beneficial to production and helps improve the stability of product quality. After installing this water guiding core into the water-based pen refill, the structure of the refill is as Figure 5 shown. The core body head 1 of the core body is inserted into the ball pen tip 6, the front end of the core body head 1 abuts against the position of the ball in the ball pen tip 6, the needle tube seat is positioned in the pen tip seat 7 of the refill, the water guiding section 3 is located in the water storage device 8 of the refill, and the rear end of the water guiding section 3 extends into the ink cartridge (not shown in the figure). When writing, the ink is introduced from the ink cartridge and flows along the water guiding groove 4 into the ball in the pen tip to continuously supply ink for writing.

[0027] In this embodiment, water storage grooves 5 are formed on the outer walls of the core body head 1 and the needle tube seat 2. The water storage grooves 5 communicate with the water guiding groove 4. Arranging multiple water storage grooves 5 can increase the ink storage capacity in the gap between the inner wall of the ball pen tip 6 and the water storage grooves 5 to continuously supply ink for writing; further, the water storage grooves 5 can be but are not limited to annular grooves, arc grooves, or star grooves. The water storage grooves 5 in this embodiment are designed as annular grooves.

[0028] As an extended design, the core body head 1 can also be designed with an elliptical, star-shaped, or polygonal cross-sectional shape. With this design, there can be a larger gap between the core body head 1 and the ball pen tip to increase the ink storage capacity, so that the above-mentioned water storage grooves 5 can be not designed.

[0029] As a further improvement, in this embodiment, a first buffer and stabilization structure for buffering ink is provided on the water guiding section 3. When in use, the first buffer and stabilization structure slows down the ink flow rate without blocking the ink to avoid the problem of "ink dripping" during writing due to the ink flowing down the water guiding section 3 too fast.

[0030] More specifically, the first buffer and stabilization structure includes a number of first axial ridges 31 formed on the side wall of the water guiding section 3 and arranged at intervals in the circumferential direction. A first axial groove 32 is formed between adjacent first axial ridges 31. The first axial groove allows the ink to flow through, and the first axial ridges 31 slow down the ink flow rate by their obstructive effect.

[0031] As a variant structure or further improvement of the first buffer and stabilization structure described above, the first buffer and stabilization structure includes a flow-slowing surface 33 formed on the side surface of the water diversion section 3 and arranged along the axial direction of the water diversion section 3. The flow-slowing surface 33 is an uneven rough surface, thereby achieving the purpose of slowing down the ink flow rate to a certain extent.

[0032] In this embodiment, the core is made of plastic material.

[0033] Example 2

[0034] As a further improvement of Embodiment 1, in this embodiment, a second buffer and stabilization structure for buffering ink is provided on the syringe base 2. The second buffer and stabilization structure includes a plurality of second axial ridges 21 formed on the side wall of the syringe base 2 and arranged at intervals in the circumferential direction. Second axial grooves 22 are formed between adjacent second axial ridges 21. The function of the second buffer and stabilization structure in this embodiment is the same as that of the first buffer and stabilization structure in Embodiment 1.

[0035] Example 3

[0036] As a further improvement of Embodiment 1, an axial balance groove 11 is provided on the head 1 of the core and / or the syringe base 2 (that is, at least one of the head 1 of the core and the syringe base 2). When assembled into a pen for writing, the ink pressure is released through the balance groove 11, and the writing effect is good.

[0037] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And these obvious changes or modifications derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. An integrated water-based pen water guiding core, characterized in that, It includes an integrally injection-molded core body, and the core body includes a core body head (1), a needle tube seat (2), and a water diversion section (3) that are connected in sequence from front to back; There is a water diversion groove (4) on the side of the core body, and the water diversion groove (4) extends axially backward from the front end face of the core body head (1) to the water diversion section (3); A first buffer and stabilization structure for buffering ink is provided on the water diversion section (3); the first buffer and stabilization structure includes a plurality of first axial ridges (31) formed on the side wall of the water diversion section (3) and arranged at intervals in the circumferential direction, and a first axial groove (32) is formed between adjacent first axial ridges (31); or / and, the first buffer and stabilization structure includes a flow retardation surface (33) formed on the side of the water diversion section (3) and arranged along the axial direction of the water diversion section (3), and the flow retardation surface (33) is an uneven rough surface; An axial balance groove (11) is provided on the core body head (1) or / and the needle tube seat (2).

2. The integrated aqueous pen water guiding core according to claim 1, wherein A water storage groove (5) is formed on the outer walls of the core body head (1) and the needle tube seat (2), and the water storage groove (5) is communicated with the water diversion groove (4).

3. The integrated water-based pen water guiding core according to claim 2, characterized in that, The water storage groove (5) is an annular groove, an arc groove or a star groove.

4. The integrated aqueous pen water guiding core according to claim 1, wherein, The cross-sectional shape of the core body head (1) is an ellipse, a star or a polygon.

5. The integrated water-based pen water guiding core according to claim 1, characterized in that, A second buffer and stabilization structure for buffering ink is provided on the needle tube seat (2).

6. The integrated aqueous pen water guiding core according to claim 5, characterized in that, The second buffer and stabilization structure includes a plurality of second axial ridges (21) formed on the side wall of the needle tube seat (2) and arranged at intervals in the circumferential direction, and a second axial groove (22) is formed between adjacent second axial ridges (21).

7. The integrated aqueous pen water guiding core according to claim 1, characterized in that The core body is made of plastic material.

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