Ink box

Abstract

The utility model relates to the technical field of printing supplies, in particular to an ink box, which comprises a box body, an ink storage cavity, a nozzle cavity, a first air cavity and a second air cavity are arranged in the box body, a surface cover and an outer convex part are respectively arranged at two opposite ends of the box body, a first air guide cavity communicated with the first air cavity and the second air cavity is arranged on the surface cover, and a second air guide cavity communicated with the second air cavity is arranged on the outer convex part. An ink jet nozzle and an air inlet are formed in the convex part, the ink jet nozzle is communicated with the nozzle cavity, the nozzle cavity is communicated with the ink storage cavity through an ink supply path, the air inlet is located in one side of the ink jet nozzle and communicated with the first air cavity, and a second air guide cavity is further formed in the convex part and used for communicating the second air cavity with the ink storage cavity; the ink box can effectively avoid the problem that ink enters the first air cavity by mistake and flows out of the air inlet due to the fact that the ink box is reversed during packaging, transporting or taking.

Description

Technical Field

[0001] The utility model relates to the technical field of printing consumables, in particular to an ink cartridge. Background Art

[0002] At present, some manufacturers have set the air inlet on the same side as the ink outlet, and the air guiding channel can be automatically opened during the installation of the ink cartridge. For example, Chinese Utility Model Patent Application CN116476534A discloses an ink cartridge, and the designed air flow entering direction is from the air inlet on the outer interface side - air guiding channel - air guiding cavity - air outlet - buffer cavity - anti-leakage part. However, such a design still has some problems. For example, during the packaging and transportation of the ink cartridge, due to turning or inversion, a small amount of ink will flow into the air guiding cavity, and when the ink cartridge is installed, the ink will flow out from the air guiding cavity along the air guiding channel - air inlet and pollute the printer. Summary of the Utility Model

[0003] To solve the above problems, the utility model adopts the following technical solutions:

[0004] An ink cartridge, including a cartridge body, the cartridge body has an ink storage cavity, a nozzle cavity, a first air cavity and a second air cavity, opposite ends of the cartridge body are respectively provided with a face cover and an outer convex part, a first air guiding cavity communicating the first air cavity and the second air cavity is opened on the face cover, an ink jet nozzle and an air inlet are provided on the outer convex part, the ink jet nozzle is communicated with the nozzle cavity, a supply ink route is provided between the nozzle cavity and the ink storage cavity, the air inlet is located on one side of the ink jet nozzle and is communicated with the first air cavity, a second air guiding cavity is further provided on the outer convex part, and the second air guiding cavity is used for communicating the second air cavity and the ink storage cavity.

[0005] In some possible embodiments, a first tubular air passage communicating the air inlet is protruded at the bottom of the first air cavity.

[0006] In some possible embodiments, a second tubular air passage and a third tubular air passage are protruded on the side of the face cover opposite to the first air guiding cavity, the second tubular air passage is used for communicating the first air cavity and the first air guiding cavity, and the third tubular air passage is used for communicating the second air cavity and the first air guiding cavity.

[0007] In some possible embodiments, the second air guiding cavity is provided at a position on the outer wall of the cartridge body opposite to the second air cavity, a first air hole and a second air hole are opened on the second air guiding cavity, the first air hole is used for communicating the second air cavity and the second air guiding cavity, the second air hole is used for communicating the second air guiding cavity and the ink storage cavity, and a first sponge is provided at the bottom of the second air cavity.

[0008] In some possible embodiments, a sealing ring is provided on the inkjet nozzle. At one end of the sealing ring facing outward, a number of spaced protrusions are formed, and after the ink supply needle pierces the nozzle film, air enters the first air chamber through the air inlet between two adjacent protrusions.

[0009] In some possible embodiments, ribs are formed on the end face of the outward convex portion, and the nozzle film is hermetically welded to the ribs to close the second air guide chamber.

[0010] In some possible embodiments, an ink filling port is further provided on the outward convex portion. The ink filling port and the air inlet are respectively arranged on opposite sides of the inkjet nozzle. The ink filling port communicates with the nozzle chamber, and a sealing plug is provided on the ink filling port.

[0011] In some possible embodiments, the ink supply route is a serpentine groove formed on the outer side wall of the cartridge body. A transparent cover plate is sealed on the serpentine groove, and the highest liquid level line of the serpentine groove is higher than the highest liquid level line of the ink storage chamber.

[0012] In some possible embodiments, a pressure reducing chamber is further provided in the ink storage chamber. A second sponge is placed in the pressure reducing chamber. A first ink passage hole and a second ink passage hole are respectively opened at two ends of the serpentine groove. The first ink passage hole communicates with the pressure reducing chamber, and the second ink passage hole communicates with the nozzle chamber.

[0013] In some possible embodiments, a capacity demarcation plate is further provided in the ink storage chamber. A through hole is opened at the bottom of the capacity demarcation plate, and the through hole can be closed by an interchangeable insert.

[0014] In the ink cartridge provided by the embodiment of the present invention, a first air guide chamber and a second air guide chamber are respectively arranged at opposite ends of the cartridge body. The air inlet is arranged on one side of the inkjet nozzle. After the ink supply needle pierces the nozzle film, air sequentially passes through the first air chamber, the first air guide chamber, the second air chamber, and the second air guide chamber and then enters the ink storage chamber from the air inlet, realizing the pressure balance in the ink storage chamber. Such a design can effectively avoid the problem that ink enters the first air chamber by mistake and flows out from the air inlet due to the ink cartridge being inverted during packaging, transportation, or use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a structural exploded view of the ink cartridge provided by the embodiment of the present invention;

[0017] Figure 2 A three-dimensional structure diagram of the ink cartridge provided by the embodiment of the present utility model;

[0018] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0019] Figure 4 A top view of the structure of the ink cartridge provided by the embodiment of the present utility model;

[0020] Figure 5 is Figure 4 a sectional side view in the direction of B-B in

[0021] Figure 6 is Figure 4 a sectional side view in the direction of C-C in

[0022] Figure 7 A bottom view of the structure of the ink cartridge provided by the embodiment of the present utility model;

[0023] Figure 8 is Figure 7 a sectional side view in the direction of D-D in

[0024] Figure 9 A schematic diagram of the structure of the ink cartridge provided by the embodiment of the present utility model with the chip end facing up;

[0025] Figure 10 A schematic diagram of the marking of the highest liquid level line of the ink cartridge provided by the embodiment of the present utility model.

[0026] Reference numerals:

[0027] Cartridge body 100, ink storage cavity 101, nozzle cavity 102, first air cavity 103, first tubular air passage 1031, second air cavity 104, ink supply route 105, first ink passage hole 1051, second ink passage hole 1052, transparent cover plate 106, second air film 107, handle 108, chip end 109, decompression cavity 110, second sponge 111, capacity demarcation plate 112, isolation cavity 113, through hole 114;

[0028] Face cover 200, first air guide cavity 201, second tubular air passage 2011, third tubular air passage 2012, first air film 202;

[0029] Outer convex part 300, inkjet nozzle 301, sealing ring 3011, elastic member 3012, ink nozzle top core 3013, protrusion 3014, air inlet 302, second air guide cavity 303, first air hole 3031, second air hole 3032, first sponge 304, nozzle film 305, sealing plug 306, air inlet passage 307, rib 308, ink filling port 309. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0031] Referring to Figures 1 to 10 the ink cartridge shown, which includes a cartridge body 100. A ink storage chamber 101, a nozzle chamber 102, a first cavity and a second air chamber 104 are provided in the cartridge body 100. Ink is stored in the ink storage chamber 101. Opposite ends of the cartridge body 100 are respectively provided with a face cover 200 and a convex portion 300. A chip end 109 and a handle 108 are provided on one side of the cartridge body 100. The handle 108 is hinged to the cartridge body 100. A first air guide chamber 201 for communicating the first air chamber 103 and the second air chamber 104 is provided on the face cover 200. An inkjet nozzle 301, an air inlet 302 and a second air guide chamber 303 are provided on the convex portion 300. The inkjet nozzle 301 is communicated with the nozzle chamber 102. The nozzle chamber 102 is communicated with the ink storage chamber 101 through a ink supply path 105. That is, ink is conveyed from the ink storage chamber 101 to the nozzle chamber 102 through the ink supply path 105, and then flows out from the nozzle chamber 102 through the inkjet nozzle 301. The second air guide chamber 303 and the air inlet 302 are located on the same side of the inkjet nozzle 301. The air inlet 302 is communicated with the first air chamber 103. The second air guide chamber 303 communicates the second air chamber 104 and the ink storage chamber 101. That is, after the ink supply needle pierces the nozzle film 305, air enters the ink storage chamber 101 from the air inlet 302 through the first air chamber 103, the first air guide chamber 201, the second air chamber 104, and the second air guide chamber 303 in sequence, realizing the pressure balance in the ink storage chamber 101. In the present utility model, the air inlet 302 is provided on one side of the inkjet nozzle 301, and the first air guide chamber 201 and the second air guide chamber 303 are respectively provided at opposite ends of the cartridge body 100, effectively avoiding the problem that ink enters the first air chamber 103 by mistake and flows out from the air inlet 302 due to the ink cartridge being inverted during packaging, transportation or taking, thereby contaminating the printing device.

[0032] In some possible embodiments, referring to Figures 6 to 8 the figure shown, a first tubular air passage 1031 communicating with the air inlet 302 protrudes from the bottom of the first air chamber 103. The first tubular air passage 1031 is integrally formed with the cartridge body 100. Such a design makes the air passage connecting the first air chamber 103 and the air inlet 302 higher than the bottom of the first air chamber 103. Therefore, after the ink cartridge is installed and used, even if there is a small amount of ink in the first air chamber 103, it cannot flow out from the first air chamber 103 through the air inlet 302, preventing the ink from contaminating the printing device.

[0033] In some possible embodiments, referring to Figure 1 and Figures 4 to 6 As shown, on the side of the face cover 200 opposite to the first air guide cavity 201, there are a second tubular air passage 2011 and a third tubular air passage 2012 protruding. The second tubular air passage 2011 and the third tubular air passage 2012 are integrally formed with the face cover 200. The second tubular air passage 2011 is used to connect the first air cavity 103 and the first air guide cavity 201, and the third tubular air passage 2012 is used to connect the first air guide cavity 201 and the second air cavity 104. Specifically, the first air guide cavity 201 is opened on the upper end face of the face cover 200, and a first air film 202 is hermetically welded to the upper end of the first air guide cavity 201 to prevent air leakage here. The second tubular air passage 2011 and the third tubular air passage 2012 are both arranged on the lower end face of the face cover 200 and communicate with the first air guide cavity 201; after installation, the second tubular air passage 2011 extends into the first air cavity 103, and the third tubular air passage 2012 extends into the second cavity. Such a design makes it difficult for ink to enter the first air guide cavity 201 from the second air cavity 104 when the ink cartridge is placed upside down; further, to prevent ink from dripping into the first tubular air passage 1031 along the second tubular air passage 2011 when there is ink in the first air guide cavity 201, the first tubular air passage 1031 and the second tubular air passage 2011 should be designed not to be coaxial.

[0034] In some possible embodiments, referring to Figure 3 and Figure 5 As shown, the second air guide cavity 303 is arranged at a position on the outer wall of the cartridge body 100 opposite to the second air cavity 104. The second air guide cavity 303 is provided with a first air hole 3031 and a second air hole 3032. The first air hole 3031 is used to connect the second air cavity 104 and the second air guide cavity 303, and the second air hole 3032 is used to connect the second air guide cavity 303 and the ink storage cavity 101. During use, the pressure in the ink storage cavity 101 is less than the pressure in the second air cavity 104, so it can block the ink from flowing from the ink storage cavity 101 into the second air guide cavity 303. And there is also an isolation cavity 113 in the cartridge body 100. The lower end of the isolation cavity 113 communicates with the second air guide cavity 303 through the second air hole 3032, and the upper end of the isolation cavity 113 is provided with a third air hole communicating with the ink storage cavity 101. Therefore, the ink in the ink storage cavity 101 cannot directly enter the second air guide cavity 303; furthermore, a first sponge 304 is also arranged at the bottom of the second air cavity 104. The first sponge 304 is installed into the second air cavity 104 from top to bottom, so the first sponge 304 can closely adhere to the bottom of the second air cavity 104. Such a design cleverly solves the problem of poor sealing caused by wrinkling around the sponge when the conventional sponge is horizontally installed on one side of the ink passage hole.

[0035] In some possible embodiments, referring to Figures 1 to 3As shown in the figure, a sealing ring 3011 is provided on the inkjet nozzle 301. Several spaced protrusions 3014 are formed at the outer end of the sealing ring 3011. An air inlet channel 307 is formed between two adjacent protrusions 3014 near the air inlet 302. After the ink supply needle pierces the nozzle film 305, air can flow from the air inlet channel 307 through the air inlet 302 into the first air chamber 103 and finally into the ink storage chamber 101 to balance the pressure in the ink storage chamber 101. In this embodiment, the sealing ring 3011 can be made of elastic rubber material. During the working process, the protrusions 3014 provide a force that always acts towards the ink ejection direction on the nozzle film 305 to avoid the problem that the nozzle film 305 is punctured and then sinks into the inkjet nozzle 301 to block the air inlet channel 307. It should be noted that an elastic member 3012 and an ink nozzle top core 3013 are also provided in the inkjet nozzle 301. Under normal conditions, the elastic member 3012 exerts a downward force on the ink nozzle top core 3013 to block the inkjet nozzle 301. The ink supply needle lifts the ink nozzle top core 3013 to compress the elastic member 3012. After the ink nozzle top core 3013 is lifted, the ink can flow out from the inkjet nozzle 301 to achieve ink supply.

[0036] In some possible embodiments, referring to Figure 3 As shown in the figure, a rib 308 is formed on the end face of the convex portion 300. The nozzle film 305 can be hermetically welded to the rib 308 to close one end of the second air guide chamber 303 away from the second air chamber 104.

[0037] In some possible embodiments, referring to Figures 1 to 3 As shown in the figure, an ink filling port 309 is further provided on the convex portion 300. The ink filling port 309 and the air inlet 302 are arranged on opposite sides of the inkjet nozzle 301. The ink filling port 309 is communicated with the nozzle chamber 102. When filling ink, the cartridge 100 needs to be turned over so that the ink filling port 309 faces upward. At this time, the inkjet nozzle 301, the air inlet 302, and the ink filling port 309 are all at the highest position of the cartridge 100, so that the ink can flow from the ink filling port 309 through the nozzle chamber 102 into the ink chamber. And when filling ink, the first sponge 304 at the bottom of the second air chamber 104 is also at a high position in the cartridge 100. When filling ink, the air in the ink storage chamber 101 can flow out from the second air guide chamber 303 - the second air chamber 104 - the first air guide chamber 201 - the first air chamber 103 - the air inlet 302. The first sponge 304 being at a high position in the cartridge 100 can ensure that the ink does not flow to the first sponge 304 / the second air chamber 104 along with the air flow during ink filling. After filling ink, a sealing plug 306 is blocked at the ink filling port 309, and finally the ink filling port 309 is sealed again through the nozzle film 305.

[0038] In some possible embodiments, referring to Figure 9 and Figure 10As shown, the ink supply path 105 is a serpentine groove formed on the outer sidewall of the cartridge body 100. A transparent cover plate 106 is sealed on the serpentine groove. Specifically, a second air film 107 is sealed and welded between the transparent cover plate 106 and the serpentine groove to prevent leakage between the serpentine groove and the transparent cover plate 106. The transparent cover plate 106 can serve as a visualization window, making it easier to distinguish the color of the ink, so as to install the ink cartridge into the ink cartridge of the corresponding color of the printing device. Further, when the convex portion 300 faces downward and is installed on the printing device, the highest liquid level line of the serpentine groove is higher than the highest liquid level line of the ink storage chamber 101. For the convenience of description, let the highest liquid level line of the serpentine groove be a, and the highest liquid level line of the ink storage chamber 101 be b. The distance from a to the bottom of the ink storage chamber 101 is greater than the distance from b to the ink storage chamber 101. The purpose of this design is to block the pressure of the ink in the ink storage chamber 101 on the nozzle chamber 102.

[0039] In some possible embodiments, referring to Figures 6 to 8 As shown, a pressure reducing chamber 110 is further provided in the ink storage chamber 101. A second sponge 111 is installed in the pressure reducing chamber 110. A first ink passage hole 1051 and a second ink passage hole 1052 are respectively provided at both ends of the serpentine groove. The first ink passage hole 1051 communicates with the pressure reducing chamber 110, and the second ink passage hole 1052 communicates with the nozzle chamber 102. The side surface of the second sponge 111 is in close contact with the first ink passage hole 1051. This can solve the problem that when the ink cartridge is transported with the chip end 109 facing upward, after the second sponge 111 adsorbs enough ink, it forms an internal shielding effect and blocks the first ink passage hole 1051, effectively preventing the ink in the nozzle chamber 102 from flowing back into the ink storage chamber 101. And during use, the second sponge 111 adsorbs the ink in the ink storage chamber 101 and supplies it to the nozzle chamber 102, ensuring that there is always enough ink in the nozzle chamber 102 and the ink in the nozzle chamber 102 is finally consumed.

[0040] Even further, referring to Figure 9 As shown, taking the posture of the ink cartridge with the chip end 109 facing upward as an example, the second ink passage hole 1052 is provided at the top position of the nozzle chamber 102 close to the chip end 109. This ensures that when the ink cartridge is placed and transported with the chip end 109 facing upward, the ink in the nozzle chamber 102 will not flow back into the ink storage chamber 101.

[0041] In some possible embodiments, referring to Figure 6 And Figure 8As shown, a capacity dividing plate 112 is further provided in the ink storage chamber 101. The capacity dividing plate 112 can divide the ink storage chamber 101 into two regions. A through hole 114 is formed at the bottom of the capacity dividing plate 112 to connect the two regions. The through hole 114 can be closed by an interchangeable insert to reduce the capacity of the ink storage chamber 101. The purpose of such a design is that when the capacity requirement of the ink storage chamber 101 is small, the through hole 114 can be closed by the interchangeable insert to reduce the capacity of the ink storage chamber 101, solving the problem that when a small-capacity ink is filled into a large-capacity cartridge, there is too much space / air in the ink storage chamber 101, and the air in the ink storage chamber 101 expands in a high-temperature environment, resulting in the deformation of the cartridge.

[0042] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An ink cartridge, characterized in that The invention comprises a box body (100), wherein the box body (100) has an ink storage chamber (101), a nozzle chamber (102), a first air chamber (103) and a second air chamber (104); a surface cover (200) and an outer protrusion (300) are respectively arranged at opposite ends of the box body (100); a first air guide chamber (201) communicating with the first air chamber (103) and the second air chamber (104) is opened on the surface cover (200); an ink nozzle (301) and an air inlet (304) are arranged on the outer protrusion (300); The inkjet nozzle (301) is connected to the nozzle chamber (102), the nozzle chamber (102) and the ink storage chamber (101) are connected via an ink supply line (105), the air inlet (302) is located on one side of the inkjet nozzle (301) and is connected to the first air chamber (103), and a second air guide chamber (303) is further provided on the outer protrusion (300), and the second air guide chamber (303) is used to connect the second air chamber (104) and the ink storage chamber (101).

2. The ink cartridge according to claim 1, characterized in that: The bottom protrusion (3014) of the first air cavity (103) has a first tubular air passage (1031) connected to the air inlet (302).

3. The ink cartridge according to claim 1 or 2, characterized in that: A protrusion (3014) on the side of the face cover (200) opposite to the first air guide cavity (201) has a second tubular air channel (2011) and a third tubular air channel (2012); the second tubular air channel (2011) is used to connect the first air cavity (103) and the first air guide cavity (201); and the third tubular air channel (2012) is used to connect the second air cavity (104) and the first air guide cavity (201).

4. The ink cartridge according to claim 1, characterized in that: The second air guide cavity (303) is arranged on the outer wall of the box body (100) at a position opposite to the second air cavity (104), and the second air guide cavity (303) is provided with a first air hole (3031) and a second air hole (3032), the first air hole (3031) is used to connect the second air cavity (104) and the second air guide cavity (303), the second air hole (3032) is used to connect the second air guide cavity (303) and the ink storage cavity (101), and a first sponge (304) is arranged at the bottom of the second air cavity (104).

5. The ink cartridge according to claim 1, characterized in that: The inkjet nozzle (301) is provided with a sealing ring (3011), and a plurality of spaced protrusions (3014) are formed on the outward end of the sealing ring (3011). After the ink supply needle pierces the nozzle membrane (305), air enters the first air cavity (103) through the air inlet (302) from between two adjacent protrusions (3014).

6. The ink cartridge according to claim 5, characterized in that: A convex rib (308) is formed on the end surface of the outer convex portion (300), and the nozzle film (305) is sealingly welded to the convex rib (308) and closes the second air guide cavity (303).

7. The ink cartridge according to claim 1, characterized in that: The outer convex portion (300) is also provided with an ink filling port (309), the ink filling port (309) and the air inlet (302) are arranged on two opposite sides of the inkjet nozzle (301), the ink filling port (309) is connected with the nozzle cavity (102), and a sealing plug (306) is arranged on the ink filling port (309).

8. The ink cartridge according to claim 1, characterized in that: The ink supply route (105) is a serpentine groove formed on the outer wall of the box body (100), the serpentine groove is sealed with a transparent cover plate (106), and the highest liquid level line of the serpentine groove is higher than the highest liquid level line of the ink storage chamber (101).

9. The ink cartridge according to claim 8, characterized in that: A decompression chamber (110) is also provided in the ink storage chamber (101), a second sponge (111) is placed in the decompression chamber (110), a first ink hole (1051) and a second ink hole (1052) are respectively provided at both ends of the serpentine groove, the first ink hole (1051) is connected to the decompression chamber (110), and the second ink hole (1052) is connected to the nozzle chamber (102).

10. The ink cartridge according to claim 1, characterized in that: A capacity dividing plate (112) is also provided in the ink storage cavity (101), a through hole (114) is provided at the bottom of the capacity dividing plate (112), and the through hole (114) can be closed by an interchangeable insert.

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