CN111703238A - One-piece water-based pen water core - Google Patents

Abstract

The invention discloses an integrated water-based pen water guiding core, comprising an integral injection-molded core body, the core body comprising a core body head, a needle tube seat and a water guiding section sequentially connected from front to back; A water guiding groove is provided, and the water guiding groove extends axially backward from the front end face of the core body head to the water guiding section. The water-based pen water-inducing core of the present invention has a reasonable structure, can be formed by one-time injection molding, saves an assembly process, facilitates processing and production, and ensures quality stability.

Description

One-piece water-based pen water core

technical field

The invention relates to the field of structural design of a water-based pen water guiding core, in particular to an integrated water-based pen water guiding core.

Background technique

Water-based pens featuring ballpoint nibs and refill-free ink refills are widely used because of their convenience, cleanliness and fluent writing. The pen core is provided with a water guiding core, the rear end of the water guiding core extends into the ink chamber, and the front end is inserted into the pen head, and the ink in the ink chamber can be introduced into the pen head through the water guiding core during use. The existing water guiding core for water-based pen is usually a two-stage water guiding core, which is made by inserting one end of a polyester fiber polymerized water guiding core and an extruded star-shaped water guiding fine core. When in use, the polyester fiber polymerized water diversion core drains the ink from the rear end to the front end, and then transports the ink into the ball pen head through the extruded star-shaped water diversion core connected to the front end to complete the writing. During the production of this water diversion core, due to the small parts, the assembly of the polyester fiber polymerized water diversion core and the extruded star-shaped water diversion core is relatively inconvenient, which is not conducive to improving the production efficiency of the water diversion core, and also causes inconvenience in quality. Stablize.

SUMMARY OF THE INVENTION

In this regard, the present invention aims to provide an integrated water-based pen water guiding core that is beneficial to production.

The technical scheme that realizes the object of the present invention is:

An integrated water-based pen water guiding core, comprising an integral injection-molded core body, the core body comprising a core body head, a needle tube seat and a water guiding section sequentially connected from front to back;

A water guiding groove is provided on the side surface of the core body, and the water guiding groove extends from the front end face of the core body head to the water guiding section in the axial direction backward.

In the above technical solution, a water storage tank is formed on the outer wall of the head of the core body and the needle tube seat, and the water storage tank communicates with the water diversion tank.

In the above technical solution, the water storage tank is an annular groove, an arc-shaped groove or a star-shaped groove.

In the above technical solution, the cross-sectional shape of the core head is oval, star or polygon.

In the above technical solution, a first buffering and stabilizing structure for buffering ink is provided on the water diversion section.

In the above technical solution, the first buffering and stabilizing structure includes a plurality of first axial protruding strips formed on the side wall of the water diversion section at intervals along the circumferential direction, and first axial grooves are formed between adjacent first axial protruding strips. groove.

In the above technical solution, the first buffering and stabilizing structure includes a slow flow surface formed on the side of the water diversion section and provided along the axial direction of the water diversion section, and the slow flow surface is an uneven rough surface.

In the above technical solution, a second buffering and stabilizing structure for buffering ink is provided on the needle tube seat.

In the above technical solution, the second buffering and stabilizing structure includes a plurality of second axial protruding strips formed on the side wall of the needle tube seat at intervals along the circumferential direction, and second axial grooves are formed between adjacent second axial protruding strips. groove.

In the above technical solution, an axial balance groove is provided on the head of the core body or/and the needle tube seat.

In the above technical solution, the core body is made of plastic material.

The present invention has positive effects: the structure of the water guiding core in the present invention is reasonable, and the integrated core body of the water guiding core is directly made by injection molding during production, which saves the two-stage assembly process, is conducive to production, and is conducive to improving the product quality. quality stability.

Description of drawings

Fig. 1 is the structural representation of one-piece water-based pen water guiding core in the present invention;

Fig. 2 is the structural representation of the integrated water-based pen water guiding core shown in Fig. 1 observed from another angle;

Fig. 3 is the enlarged view of A place in Fig. 1;

Fig. 4 is a sectional view taken along line B-B in Fig. 1;

5 is a schematic structural diagram of a water-based pen refill.

The reference signs shown in the figure are: 1-core head; 11-balance groove; 2-needle tube seat; 21-second axial protruding strip; 22-second axial groove; 3- water diversion section; 31 - The first axial protruding strip; 32 - the first axial groove; 33 - the slow flow surface; 4 - the water diversion groove; 5 - the water storage tank;

Detailed ways

Below in conjunction with the accompanying drawings of the description, the specific structure of the integrated water-based pen water guiding core in the present invention will be described:

Example 1

An integrated water-based pen water guiding core, as shown in Figures 1 to 4, includes an integral injection-molded core body, the core body includes a core body head 1, a needle tube seat 2 and a water guiding section 3 sequentially connected from front to back. There is a water guiding groove 4 on the side of the core body, and the water guiding groove 4 extends from the front end surface of the core body head 1 to the water guiding section 3 in the axial direction. The structure of the water diversion core in this embodiment is reasonable, and the core body is directly made by injection molding during production, which saves the assembly process, is beneficial to production, and is beneficial to improving the stability of product quality. After the water-based refill is put into the water-based pen refill, the structure of the refill is shown in Figure 5. The core head 1 of the core is inserted into the ball pen head 6, and the front end of the core head 1 is pushed into the ball pen head 6. The position of the ball, the needle seat is positioned in the pen head seat 7 of the refill, the water diversion section 3 is in the water reservoir 8 of the pen refill, and the rear end of the water diversion section 3 extends into the ink tank (not shown in the figure), and the ink is used for writing. The ink is introduced from the ink tank and flows into the balls in the pen head along the water channel 4 to continuously supply ink for writing.

In this embodiment, a water storage tank 5 is formed on the outer walls of the core body head 1 and the needle tube seat 2 , and the water storage tank 5 communicates with the water diversion groove 4 . 6. Increase the ink storage capacity in the space between the inner wall and the water storage tank 5 to continuously supply ink for writing; further, the water storage tank 5 can be, but not limited to, an annular groove, an arc groove or a star groove. This embodiment The water storage tank 5 is designed as an annular groove.

As an extension design, the core head 1 can also be designed to have an oval, star or polygonal cross-sectional shape. With this design, there can be a larger gap between the core head 1 and the ball pen head to increase the Therefore, the above-mentioned water storage tank 5 may not be designed.

As a further improvement, in this embodiment, the water diversion section 3 is provided with a first buffering and stabilizing structure for buffering the ink. When in use, the first buffering and stabilizing structure can slow down the ink flow without blocking the ink. Avoid the problem of "dropping ink" during writing when the ink flows too fast down the water diversion section 3.

More specifically, the first buffering and stabilizing structure includes a plurality of first axial protruding strips 31 formed on the side wall of the water diversion section 3 at intervals along the circumferential direction, and a first axial protruding strip 31 is formed between adjacent first axial protruding strips 31 . The axial grooves 32 and the first axial grooves allow ink to flow through, and the first axial protruding strips 31 hinder the flow of ink to slow down the flow of ink.

As a deformation structure or a further improvement of the first buffering and stabilizing structure, the first buffering and stabilizing structure includes a slow-flow surface 33 formed on the side of the water-guiding section 3 and arranged along the axial direction of the water-guiding section 3 , and the slow-flow surface 33 is concave-convex. Uneven rough surface, thus achieving the purpose of slowing down the ink flow to a certain extent.

In this embodiment, the core body is made of plastic material.

Example 2

As a further improvement of Embodiment 1, in this embodiment, the needle tube seat 2 is provided with a second buffering and stabilizing structure for buffering ink, and the second buffering and stabilizing structure includes a circumferential direction formed on the side wall of the needle tube seat 2 A plurality of second axial protruding strips 21 are arranged at intervals, and second axial grooves 22 are formed between adjacent second axial protruding strips 21 . The buffer stabilizing structure does the same.

Example 3

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

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And these obvious changes or changes derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims (11)

1. An integrated water-based pen water guiding core, characterized in that it comprises an integral injection-molded core body, and the core body comprises a core body head (1), a needle tube seat (2) and a water guiding section sequentially connected from front to back (3); 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). 2. The integrated water-based pen water guiding core according to claim 1, characterized in that, a water storage tank (5) is formed on the outer wall of the core body head (1) and the needle tube seat (2). The water storage tank (5) is communicated with the water introduction tank (4). 3. The integrated water-based pen water guiding core according to claim 2, characterized in that, the water storage tank (5) is an annular groove, an arc-shaped groove or a star-shaped groove. 4 . The integrated water-based pen water guiding core according to claim 1 , wherein the cross-sectional shape of the core head ( 1 ) is an ellipse, a star or a polygon. 5 . 5. The integrated water-based pen water-guiding core according to claim 1, characterized in that, a first buffering and stabilizing structure for buffering ink is provided on the water-guiding section (3). 6. The integrated water-based pen water-guiding core according to claim 5, wherein the first buffering and stabilizing structure comprises a plurality of first axial protrusions formed on the side wall of the water-guiding section (3) at intervals along the circumferential direction strips (31), and first axial grooves (32) are formed between adjacent first axial protruding strips (31). 7. The integrated water-based pen water-guiding core according to claim 5 or 6, wherein the first buffering and stabilizing structure comprises a buffer formed on the side of the water-guiding section (3) and provided along the axial direction of the water-guiding section (3). A flow surface (33), the slow flow surface (33) is an uneven rough surface. 8. The integrated water-based pen water guiding core according to claim 1, characterized in that, a second buffering and stabilizing structure for buffering ink is provided on the needle tube seat (2). 9 . The integrated water-based pen water guiding core according to claim 7 , wherein the second buffering and stabilizing structure comprises a plurality of second axial protrusions formed on the side wall of the needle tube seat ( 2 ) at intervals along the circumferential direction. 10 . strips (21), and second axial grooves (22) are formed between adjacent second axial protruding strips (21). 10. The integrated water-based pen water guiding core according to claim 1, characterized in that, an axial balance groove (11) is provided on the core body head (1) or/and the needle tube seat (2) . 11 . The integrated water-based pen water guiding core according to claim 1 , wherein the core body is made of plastic material. 12 .

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