Abstract
A pen structure containing liquid ink is disclosed herein. It comprises a tube body having a reservoir and an open end; a liquid outflow bushing disposed at the open end and accommodated in the reservoir of the tube body at one end thereof, wherein the liquid outflow bushing has a liquid delivering space and a screw groove disposed on a wall of the liquid delivering space and connected to an end face of the liquid delivering space at one end thereof; and a brush disposed in the liquid delivering space of the liquid outflow bushing and surrounded by the screw groove at one end thereof.
Claims
1. A pen structure containing liquid ink, comprising: a tube body having a reservoir and an open end; a liquid outflow bushing disposed at the open end and accommodated in the reservoir of the tube body at one end thereof, wherein the liquid outflow bushing has a liquid delivering space and a screw groove disposed on a wall of the liquid delivering space and connected to an end face of the liquid delivering space at one end thereof; and a brush disposed in the liquid delivering space of the liquid outflow bushing and surrounded by the screw groove at one end thereof.
2. The pen structure containing liquid ink as claimed in claim 1, wherein an outer wall of the liquid outflow bushing is formed with a tapered part, an annular part, a first connecting part and a second connecting part.
3. The pen structure containing liquid ink as claimed in claim 2, wherein the annular part contacts the open end of the tube body when the liquid outflow bushing is accommodated in the reservoir of the tube body.
4. The pen structure containing liquid ink as claimed in claim 2, wherein a diameter of the second connecting part is less than a diameter of the first connecting part.
5. The pen structure containing liquid ink as claimed in claim 1, wherein the tube body has an inner thread therein for correspondingly screwing to an external thread of a supply tube.
6. The pen structure containing liquid ink as claimed in claim 1, wherein the brush has an absorbing part for passing through the liquid delivering space of the liquid outflow bushing and a nib.
7. The pen structure containing liquid ink as claimed in claim 6, wherein the absorbing part of the brush is surrounded by the screw groove.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 is an explosion diagram showing a first embodiment for a pen structure containing liquid ink according to the present invention;
[0015] FIG. 2 is a partial cross-sectional view showing the first embodiment for the pen structure containing liquid ink according to the present invention;
[0016] FIG. 3 is a cross-sectional view showing the first embodiment for the pen structure containing liquid ink according to the present invention;
[0017] FIG. 4 is a schematic diagram showing the first embodiment for the pen structure containing liquid ink in use according to the present invention;
[0018] FIG. 5 is a first cross-sectional view showing a second embodiment for a pen structure containing liquid ink according to the present invention;
[0019] FIG. 6 is a second cross-sectional view showing the second embodiment for the pen structure containing liquid ink according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
[0020] Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0021] Referring to FIG. 1 to FIG. 3, a first embodiment for a pen structure containing liquid ink according to the present invention is disclosed herein. It mainly comprises a tube body (1), a liquid outflow bushing (2) and a brush (3). The tube body (1) has a reservoir (11) and an open end (12). The liquid outflow bushing (2) is disposed at the open end (12) and accommodated in the reservoir (11) of the tube body (1) at one end thereof. The liquid outflow bushing (2) has a liquid delivering space (21) and a screw groove (22) disposed on a wall of the liquid delivering space (21), and one end of the screw groove (22) is connected to an end face (211) of the liquid delivering space (21). Furthermore, an outer wall of the liquid outflow bushing (2) is formed with a tapered part (23), an annular part (24), a first connecting part (25) and a second connecting part (26). A diameter of the second connecting part (26) is less than a diameter of the first connecting part (25). When the liquid outflow bushing (2) is assembled to the reservoir (11) from the open end (12) of the tube body (1), the annular part (24) contacts the open end (12) of the tube body (1). The brush (3) has an absorbing part (31) and a nib (32). The absorbing part (31) is inserted into the liquid delivering space (21) of the liquid outflow bushing (2) and surrounded by a part of the screw groove (22). Namely, a length of an area surrounded with the screw groove (22) is greater than a length of the absorbing part (31) that is inserted into the liquid delivering space (21).
[0022] As shown in FIG. 1 to FIG. 3, in the assembly of the present invention, the absorbing part (31) is loaded into the liquid delivering space (21) of the liquid outflow bushing (2), and the nib (32) is protruded from the liquid outflow bushing (2). In this way, a user can use liquid ink such as an eyeliner through the nib (32). Furthermore, in assembling the liquid outflow bushing (2) to the tube body (1), the liquid outflow bushing (2) is placed into the open end (12) of the tube body (1) until the annular part (24) contacts the open end (12) of the tube body (1). In such a case, the first connecting part (25) and the second connecting part (26) are accommodated in the reservoir (11) of the tube body (1), and the tapered part (23) and the annular part (24) are located outside the tube body (1).
[0023] In a practical use, pigment liquid is accommodated in the reservoir (11) of the tube body (1) for further flowing into the liquid delivering space (21) of the liquid outflow bushing (2) as indicated by an arrow in FIG. 4. When the pigment liquid flows into the brush (3) through the liquid delivering space (21), the brush (3) which is usually made of a cotton material absorbs the pigment liquid at the same time. The pigment liquid absorbed by the absorbing part (31) of the brush (3) is discharged from the nib (32). When an amount of the pigment liquid in the reservoir (11) of the tube body (1) is reduced, a negative pressure is formed inside the reservoir (11). Because one end of the screw groove (22) is connected to the end face (211) of the liquid delivering space (21), the screw groove (22) introduces air outside the tube body (1) into the tube body (1) to balance the gas and liquid pressure inside the reservoir (11). Therefore, the pigment liquid outflows from the nib (32) smoothly and continuously without being clogged due to pressure changes.
[0024] Referring to FIG. 5 and FIG. 6, a second embodiment for a pen structure containing liquid ink according to the present invention is disclosed and can be applied to a pen structure containing an ink cartridge. The tube body (1) is further provided with a supply tube (4) filled with pigment liquid, and an opening of the supply tube (4) is blocked by a steel ball (41). Accordingly, the pigment liquid can be properly stored in the supply tube (4) when it is not yet opened for use, so as to prevent the brush (3) from adsorbing the pigment liquid before the user purchases the pen structure. When the user wants to use the pen structure after purchase, the supply tube (4) is inserted into the tube body (1) and correspondingly screwed into an inner thread (13) on an inner wall of the reservoir (11) of the tube body (1) by an external thread (42) on an outer wall of the supply tube (4), and the steel ball (41) is pushed by the second connecting part (26) of the liquid outflow bushing (2) to fall into the supply tube (4). In this way, the pigment liquid installed in the supply tube (4) flows to the liquid delivering space (21) of the liquid outflow bushing (2), and then flows to the absorbing part (31) of the brush (3) for adsorption.
[0025] It can be known from the above embodiments that the present invention can be applied to an eyeliner or an eye shadow pen for cosmetic use, and can also be applied to a pen body containing ink cartridge for general writing.
[0026] Compared with the technique available now, the present invention has the following advantages:
[0027] 1. The present invention comprises the screw groove inside the liquid outflow bushing to introduce air outside the tube body into the tube body to balance the gas and liquid pressure inside the reservoir, so the liquid ink outflows smoothly and stably from the nib.
[0028] 2. The structure of the present invention comprising the screw groove for balancing the gas and liquid pressure is not complicated and is easy to assemble, which can save the manufacturing and assembly cost.
[0029] 3. The design of the screw groove can prevent the liquid ink accidentally seeping out from the axial air flow path as in the conventional product even when the user shakes the pen structure.
