Water storage device of direct-liquid pen and direct-liquid pen

Abstract

The ink storage device comprises an ink storage device body, the ink storage device body is provided with a water outlet end, a first through hole is formed in the center of the ink storage device body in the axial direction, and an extending base is arranged at the end, away from the water outlet end, of the first through hole. A second through hole which is coaxial and communicated with the first through hole is formed in the extending seat in the axial direction, and an axial limiting structure and an ink guiding opening which are in abutting fit with the end of the ink guiding core are arranged at the end, away from the first through hole, of the second through hole. The ink guide core penetrates through the first through hole of the water storage device and the second through hole of the extension seat and then abuts against the axial limiting structure, so that when the structure is matched with a long ink guide core and the straight liquid pen is in a vertical state with the pen point facing upwards, the ink inlet end of the ink guide core can still make contact with ink through the ink guide opening, and the ink is guided to the water outlet end; the ink is not dried up even if standing for a long time; the axial limiting structure enables the water diversion core and the water storage device to be matched more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of pens, in particular to a water storage device for a straight liquid pen and the straight liquid pen. Background Art

[0002] The ink tank of the existing conventional direct liquid pen cannot be filled with ink due to the need for water outlet pressure and to avoid ink explosion, and some air should be retained. During the transportation and placement of the direct liquid pen, the pen is easily in an upright state with the pen head facing upward, and the water guide core in the water reservoir is not in contact with the ink. Over time, the ink will dry up. In particular, the ink of the direct liquid acrylic painting pen has a high content of powder particles, which is more likely to cause this problem and greatly affects the user experience. Therefore, it is urgent to design a water reservoir that can match the long water guide core. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a water storage device for a straight liquid pen and a straight liquid pen.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The first aspect of the utility model provides a water reservoir for a straight liquid pen, comprising a water reservoir body, the water reservoir body having a water outlet end, a first through hole axially arranged at the center of the water reservoir body, an extension seat being arranged at one end of the first through hole away from the water outlet end, a second through hole coaxially arranged with the first through hole and connected to the extension seat being axially arranged, and an axial limiting structure and an ink inlet port which are in abutment with the end of a water guide core being arranged at one end of the second through hole away from the first through hole.

[0006] Preferably, the ink inlet includes a first ink inlet located on the side wall of the extension seat and connected to the second through hole, an axially extending support member is provided in the first ink inlet, and the distance from the inner wall of the support member to the axis center is greater than the distance from the inner wall of the second through hole to the axis center.

[0007] Preferably, two first ink inlets are provided and are located opposite to each other on two radial sides of the second through hole.

[0008] Preferably, the extension seat includes a reinforcement ring portion connected to the axial middle portion of the first ink inlet.

[0009] Preferably, the inner wall of the support member includes a first axial surface and a second axial surface, and the first axial surface and the second axial surface are connected at one end close to each other to form a V-shaped angle with the tip facing the second through hole.

[0010] Preferably, the extension seat includes a connecting ring portion and a first ink inlet portion from the direction close to the water reservoir body to the direction away from the water reservoir body, the first ink inlet portion includes at least two connecting plates arranged around the axis and connected to the connecting ring portion, a first ink inlet port is formed between adjacent sides of two adjacent connecting plates, and the inner wall of the connecting plate is an arc surface with the same diameter as the central through hole of the connecting ring portion.

[0011] Preferably, the extension seat includes an abutment plate located at one end of the first ink inlet portion away from the water storage body, the ink inlet port includes a second ink inlet port axially penetrating the abutment plate and being coaxial with and connected to the second through hole, the second ink inlet port has a smaller diameter than the second through hole, and the axial limiting structure includes a first abutment surface formed on the bottom surface of the abutment plate and located between the second ink inlet port and the second through hole.

[0012] Preferably, the axial limiting structure further includes an abutment slope located on the inner circumferential surface of the connecting plate near the top and extending toward the bottom end of the second ink inlet.

[0013] Preferably, transition curved surfaces are provided between the two sides of the connecting plate close to the first ink introduction port and the bottom surface of the first ink introduction port, and the transition curved surfaces are smooth concave curved surfaces.

[0014] The second aspect of the utility model provides a straight liquid pen, which includes the water storage device as described above, and also includes a water guide core and an ink cylinder, the extension seat is located in the ink cylinder, and one end of the water guide core passes through the first through hole and the second through hole and abuts against the axial limiting structure.

[0015] The beneficial effects of the utility model are as follows: the water guide core passes through the first through hole of the water reservoir and the second through hole of the extension seat and then abuts against the axial limiting structure, so that the structure matches the long water guide core. When the straight liquid pen is in an upright state with the pen tip facing upward, the water inlet end of the water guide core can still contact the ink through the ink inlet port and guide the ink to the water outlet end, and the ink will not dry up even if it is upright for a long time; the axial limiting structure makes the cooperation between the water guide core and the water reservoir more stable when the pen body is in an upright state with the pen tip facing upward. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the utility model.

[0017] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a front view structural diagram of Embodiment 1 of the utility model;

[0019] Figure 3 This is a front view cross-sectional structural diagram of Embodiment 1 of the utility model;

[0020] Figure 4 This is a side cross-sectional structural diagram of Embodiment 1 of the present utility model;

[0021] Figure 5 for Figure 2 Middle CC section view;

[0022] Figure 6 for Figure 3 A magnified view of the structure at center;

[0023] Figure 7 This is a front cross-sectional view of Embodiment 2 of the present utility model;

[0024] Figure 8 for Figure 7 A magnified view of the structure at B in the middle;

[0025] In the figure, 1. water storage tank body; 2. water guide core; 3. ink cylinder; 11. first through hole; 12. extension seat; 13. second through hole; 14. second ink guide port; 15. first abutting surface; 21. connecting plate; 22. supporting member; 120. abutting plate; 121. connecting ring; 123. first ink guide port; 124. reinforcing ring; 125. transition curved surface; 211. abutting inclined surface; 221. first axial surface; 222. second axial surface. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0027] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0028] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are used to explain and understand the present invention, but not to limit the scope of protection of the present invention.

[0029] Example 1

[0030] like Figures 1 to 6As shown, in Example 1 of the utility model, a water reservoir for a straight liquid pen includes a water reservoir body 1, the water reservoir body 1 has a water outlet, a first through hole 11 is axially arranged at the center of the water reservoir body 1, an extension seat 12 is arranged at the end of the first through hole 11 away from the water outlet, the extension seat 12 is axially arranged with a second through hole 13 that is coaxial with and connected to the first through hole 11, and an axial limiting structure and an ink inlet that form an abutment fit with the end of the water guide core are arranged at the end of the second through hole 13 away from the first through hole 11.

[0031] With this arrangement, the water-drawing core passes through the first through hole of the water reservoir and the second through hole of the extension seat and then abuts against the axial limiting structure, so that the present structure matches the long water-drawing core. When the straight liquid pen is in an upright state with the pen tip facing upward, the water inlet end of the water-drawing core can still contact the ink through the ink inlet port and draw the ink to the water outlet end, and the ink will not dry up even if it is stood upright for a long time. The axial limiting structure can not only prevent the water-drawing core from being over-assembled, but also make the water-drawing core and the water reservoir cooperate more stably when the pen body is in an upright state with the pen tip facing upward, thereby preventing the water-drawing core from falling into the ink cylinder.

[0032] The ink inlet includes a first ink inlet 123 located on the side wall of the extension seat 12 and connected to the second through hole 13. An axially extending support member 22 is provided in the first ink inlet 123, and the distance from the inner wall of the support member 22 to the axis is greater than the distance from the inner wall of the second through hole 13 to the axis.

[0033] Through this arrangement, the strength of the extension seat is improved by the support member, while a large opening area of ​​the first ink inlet is ensured, reducing the interference of the support member on the flow between the water inlet core and the first ink inlet, further promoting the contact and conduction between the water inlet core and the ink, and at the same time helping to improve the convenience of assembly of the water storage device and the water inlet core.

[0034] Two first ink introduction ports 123 are provided and are located opposite to each other on two radial sides of the second through hole 13 .

[0035] Through this arrangement, the two opposite first ink inlets further take into account both large flow volume and extended seat strength.

[0036] The extension seat 12 includes a reinforcing ring portion 124 connected to the axial middle portion of the first ink introduction port 123 .

[0037] The axial middle portion refers to any position other than the two axial ends, and in this embodiment, it is preferably in the middle. Through this arrangement, the strength of the extension seat is further improved.

[0038] The inner wall of the support member 22 includes a first axial surface 221 and a second axial surface 222 . The first axial surface 221 and the second axial surface 222 are connected at one end close to each other to form a V-shaped angle with the tip facing the second through hole 13 .

[0039] Through this arrangement, the interference of the support member on the water-drawing core is further reduced. Even if the water-drawing core expands after absorbing ink, the support member will not interfere with it or will interfere very little. At the same time, the V-shaped surface structure further increases the flow rate of the first ink-drawing port, thereby promoting the contact between the water-drawing core and the ink.

[0040] The extension seat 12 includes a connecting ring portion 121 and a first ink inlet portion from the direction close to the water reservoir body 1 to the direction away from the water reservoir body 1. The first ink inlet portion includes at least two connecting plates 21 arranged around the axis and connected to the connecting ring portion 121. A first ink inlet port 123 is formed between adjacent sides of two adjacent connecting plates 21. The inner wall of the connecting plate 21 is an arc surface with the same diameter as the central through hole of the connecting ring portion 121.

[0041] Equal diameter means that the radius of the arc surface of the connecting plate and the through hole of the connecting ring are the same. Through this arrangement, the connecting ring ensures the strength of the extension seat and the stability of its cooperation with the water guide core. The first ink introduction port is formed by the opening between the adjacent sides of the adjacent connecting plates, which not only ensures the stability of the cooperation between the first ink introduction part and the water guide core, but also ensures a large opening area of ​​the first ink introduction port, further promoting the contact between the water guide core and the ink.

[0042] The extension seat 12 includes an abutment plate 120 located at one end of the first ink inlet portion away from the water storage tank body 1, and the ink inlet port includes a second ink inlet port 14 axially penetrating the abutment plate 120 and being coaxial with and connected to the second through hole 13. The second ink inlet port 14 has a smaller diameter than the second through hole 13, and the axial limiting structure includes a first abutment surface 15 formed on the bottom surface of the abutment plate 120 and located between the second ink inlet port 14 and the second through hole 13.

[0043] The axial limiting structure also includes an abutting inclined surface 211 located on the inner circumferential surface of the connecting plate 21 near the top and extending toward the bottom end of the second ink introduction port 14 .

[0044] Through this arrangement, the matching area between the abutment plate and the end of the water diversion core is increased, making the connection between the two more stable and reducing the loss of the end of the water diversion core.

[0045] A transition curved surface 125 is provided between the two sides of the connecting plate 21 close to the first ink introduction port 123 and the bottom surface of the first ink introduction port 123 , and the transition curved surface 125 is a smooth concave curved surface.

[0046] Through this setting, the transition surface can reduce the ink retention at the first ink introduction port, reduce the possibility of ink retention and drying up here, and at the same time improve the ink introduction effect.

[0047] Example 2

[0048] like Figure 7-8The straight liquid pen provided in this embodiment 2 is shown, which includes the water storage device described in embodiment 1, and also includes a water guide core 2 and an ink cylinder 3. The extension seat 12 is located in the ink cylinder, and one end of the water guide core passes through the first through hole 11 and the second through hole 13 and abuts against the axial limiting structure.

[0049] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A water reservoir for a straight liquid pen, comprising a water reservoir body (1), the water reservoir body (1) having a water outlet, a first through hole (11) being axially arranged at the center of the water reservoir body (1), characterized in that: An extension seat (12) is arranged at one end of the first through hole (11) away from the water outlet end, and a second through hole (13) is axially arranged on the extension seat (12) and is coaxial with and connected to the first through hole (11); an axial limiting structure and an ink introduction port that are in abutment with the end of the water introduction core are arranged at one end of the second through hole (13) away from the first through hole (11).

2. The water reservoir of a straight liquid pen according to claim 1, characterized in that: The ink introduction port comprises a first ink introduction port (123) located on the side wall of the extension seat (12) and connected to the second through hole (13); an axially extending support member (22) is provided in the first ink introduction port (123); and a distance from an inner wall of the support member (22) to the axis is greater than a distance from an inner wall of the second through hole (13) to the axis.

3. The water reservoir of a straight liquid pen according to claim 2, characterized in that: The first ink introduction ports (123) are provided with two and are located oppositely on two radial sides of the second through hole (13).

4. The water reservoir of a straight liquid pen according to claim 2, characterized in that: The extension seat (12) comprises a reinforcing ring portion (124) connected to the axial middle portion of the first ink introduction port (123).

5. The water storage device for a straight liquid pen according to claim 2, characterized in that: The inner wall of the support member (22) comprises a first axial surface (221) and a second axial surface (222); the first axial surface (221) and the second axial surface (222) are connected at one end close to each other to form a V-shaped angle with the tip facing the second through hole (13).

6. The water storage device for a straight liquid pen according to claim 2, characterized in that: The extension seat (12) includes a connecting ring portion (121) and a first ink-introducing portion from the direction close to the water storage body (1) to the direction away from the water storage body (1), wherein the first ink-introducing portion includes at least two connecting plates (21) arranged around the axis and connected to the connecting ring portion (121), and a first ink-introducing port (123) is formed between adjacent sides of two adjacent connecting plates (21), and the inner wall of the connecting plate (21) is an arc surface with the same diameter as the central through hole of the connecting ring portion (121).

7. The water storage device for a straight liquid pen according to claim 6, characterized in that: The extension seat (12) comprises an abutment plate (120) located at one end of the first ink introduction portion away from the water storage container body (1), the ink introduction port comprises a second ink introduction port (14) axially penetrating the abutment plate (120) and being coaxial with and connected to the second through hole (13), the second ink introduction port (14) having a smaller diameter than the second through hole (13), and the axial limiting structure comprises a first abutment surface (15) formed on the bottom surface of the abutment plate (120) and located between the second ink introduction port (14) and the second through hole (13).

8. The water storage device for a straight liquid pen according to claim 7, characterized in that: The axial limiting structure also includes an abutment inclined surface (211) located on the inner peripheral surface of the connecting plate (21) close to the top and extending towards the bottom end of the second ink introduction port (14).

9. The water storage device for a straight liquid pen according to claim 6, characterized in that: A transition curved surface (125) is provided between the two sides of the connecting plate (21) close to the first ink introduction port (123) and the bottom surface of the first ink introduction port (123), and the transition curved surface (125) is a smooth concave curved surface.

10. A straight liquid pen, comprising the water reservoir according to any one of claims 1 to 9, characterized in that: It also comprises a water guide core (2) and an ink cartridge (3), wherein the extension seat (12) is located in the ink cartridge, and one end of the water guide core passes through the first through hole (11) and the second through hole (13) and abuts against the axial limiting structure.

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