A filling container

Abstract

The utility model discloses a filling container for introducing ink to ink box, and the ink box comprises a joint cavity, an ink cavity and a first valve core, the first valve core has a protruding part and an outer end face; the filling container comprises a bottle body, the bottle body has an ink storage cavity, and a leading-out part is arranged at the first direction end of the bottle body, the leading-out part comprises an ink outlet and a pushing part, and a second valve core is further arranged in the bottle body; a channel part is arranged between the ink box and the filling container; the leading-out part is at least partially inserted into the joint cavity through the access end, the protruding part abuts against the second valve core through the ink outlet, the joint cavity is communicated with the ink cavity, the ink storage cavity is communicated with the inner cavity of the leading-out part, and the inner cavity of the leading-out part is communicated with the joint cavity through the channel part. When the leading-out part is inserted into the joint cavity in an inclined posture, the protruding part is difficult to enter the inner cavity of the leading-out part, and the second valve core is difficult to be pushed to move to make the container side valve open, so that ink leakage during ink injection can be effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of ink cartridge filling tools, and in particular to a filling container. Background Technology

[0002] There is a type of ink cartridge with a built-in outlet valve. This outlet valve includes a valve core connected to a spring. A significant elastic force is required to move the valve core to open the valve, thereby enabling gas-liquid exchange between the inside and outside of the ink cartridge. Given the market demand for users to refill and reuse these ink cartridges, some manufacturers have proposed corresponding refill containers. These products also have a valve structure, but when docked with the ink cartridge, misalignment can easily lead to the container-side valve opening while the ink cartridge-side valve remains closed, posing a risk of ink leakage. Therefore, these refill containers have room for improvement. Utility Model Content

[0003] The purpose of this invention is to provide a filling container to at least solve the problem of ink leakage caused by misalignment when the filling container and the ink cartridge are connected, resulting in the container side valve opening while the ink cartridge side valve does not open.

[0004] This invention provides a filling container for introducing ink into an ink cartridge.

[0005] The ink cartridge includes a junction cavity, an ink cavity, and a first valve core. The junction cavity and the ink cavity are in communication with each other. The junction cavity has an open access end. The first valve core is used to adjust the communication state between the junction cavity and the ink cavity. The first valve core has a protrusion protruding towards the access end and an outer end face close to the access end.

[0006] The filling container includes a bottle body with an ink storage cavity for storing ink. A discharge section is provided at a first direction end of the bottle body, and the discharge section communicates with the ink storage cavity. The discharge section includes an ink outlet and a push section, both of which are located at the first direction end of the discharge section. A second valve core is also provided inside the bottle body, which is used to adjust the communication state between the inner cavity of the discharge section and the ink storage cavity.

[0007] A channel is provided between the filling container and the ink cartridge, and ink in the ink storage chamber can be introduced into the ink chamber through the channel.

[0008] in:

[0009] The outlet portion extends at least partially through the inlet end into the junction cavity, the protrusion passes through the ink outlet and abuts against the second valve core, the junction cavity communicates with the ink cavity, the ink storage cavity communicates with the inner cavity of the outlet portion, and the inner cavity of the outlet portion communicates with the junction cavity through the channel portion.

[0010] In the filling container described above, preferably, the channel portion consists of at least two hollow structures provided on the first direction end face of the outlet portion, the hollow structures connecting the inner cavity of the outlet portion and the joining cavity, and the pushing portion is the part of the first direction end of the outlet portion located between two adjacent hollow structures.

[0011] In the filling container described above, preferably, the outer peripheral side of the second valve core is provided with a plurality of correction sections, which cooperate with the inner wall of the outlet section.

[0012] In the filling container described above, preferably, the outlet portion is a tubular structure extending along the first direction, and the correction portion is a rib structure extending along the first direction.

[0013] In the filling container described above, preferably, the first direction end of the outlet portion is provided with an alignment ring protrusion that gap-fits with the protrusion, the channel portion is a groove provided on the surface of the alignment ring protrusion, the groove penetrates the inner side of the alignment ring protrusion and the outer side of the outlet portion, and in the first direction, the size of the alignment ring protrusion is smaller than the size of the protrusion.

[0014] In a filling container as described above, preferably, the second valve core includes a closure portion that can fit against the inner wall of the bottle body, and a resilient sealing gasket is provided on the first direction side of the closure portion.

[0015] In the filling container described above, preferably, the inner wall of the outlet portion is provided with an air inlet hole, and the projection of the air inlet hole in the first direction is located on the sealing gasket.

[0016] In the filling container described above, preferably, the ink cartridge has recesses on both opposite sides in the second direction, the filling container includes two limiting arms, each limiting arm having a first end and a second end. The first end of the limiting arm is connected to the bottle body, and the second end of the limiting arm can elastically deform in the second direction. The second end of the limiting arm has an engaging protrusion that abuts against the corresponding recess in the first direction, and the second direction is orthogonal to the first direction.

[0017] In the filling container described above, preferably, the two limiting arms are provided with operating arms on opposite sides of the second end of the limiting arms, the operating arms extending in the opposite direction of the first direction, and in the first direction, the length of the operating arms is greater than the length of the limiting arms.

[0018] In the filling container described above, preferably, the ink cartridge further includes a sealing ring that is interference-fitted with the outer wall of the outlet portion.

[0019] Compared with the prior art, before filling the ink container of this utility model, the protrusion on the ink cartridge side needs to be inserted into the outlet section and abut against the second valve core. The container side pushes the first valve core through the push part or the abutting second valve core and the bracket part to open the valves on the ink cartridge side and the container side, thereby filling the ink. When the outlet section is inserted into the connecting cavity in an inclined position, the protrusion is difficult to enter the inner cavity of the outlet section, and thus it is difficult to push the second valve core to move an effective distance to open the container side valve. Therefore, it is not easy for the container side valve to open while the ink cartridge side valve does not open due to misalignment, thereby effectively preventing ink leakage during filling. Attached Figure Description

[0020] Figure 1 This is a perspective view of the filling container installed on the ink cartridge according to an embodiment of the present invention;

[0021] Figure 2 yes Figure 1 A sectional view;

[0022] Figure 3 This corresponds to one embodiment of the present utility model. Figure 2 A magnified view of part A in the middle;

[0023] Figure 4 This corresponds to another embodiment of the present utility model. Figure 2 A magnified view of part A in the middle;

[0024] Figure 5 This is a perspective view of the bottle body provided in an embodiment of this utility model;

[0025] Figure 6 yes Figure 5 A magnified view of part B in the middle;

[0026] Figure 7 This is a partial cross-sectional view of the bottle body provided in an embodiment of this utility model;

[0027] Figure 8 This is a perspective view of the second valve core provided in an embodiment of this utility model;

[0028] Figure 9 This is a perspective view of the ink cartridge provided in an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10-Ink cartridge, 11-Connection cavity, 111-Installation end, 12-Ink cavity, 13-First valve core, 131-Protrusion, 132-Outer end face, 14-Recess, 15-Sealing ring;

[0031] 20-Filling container, 21-Bottle body, 211-Ink storage chamber, 22-Outlet, 221-Ink outlet, 222-Pushing part, 223-Alignment ring protrusion, 224-Groove, 225-Air inlet hole, 23-Second valve core, 231-Correction part, 232-Sealing part, 233-Sealing gasket, 24-Bracket part, 25-Force application part, 26-Limiting arm, 261-Clamping protrusion, 27-Operating support arm;

[0032] 30-Channel Section;

[0033] D1 - First direction, D2 - Second direction. Detailed Implementation

[0034] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] Reference Figure 1 and Figure 2 As shown, this utility model provides a filling container 20 for introducing ink into the ink cartridge 10, wherein:

[0036] Reference Figure 3 , Figure 4 as well as Figure 9 As shown, the ink cartridge 10 includes a connecting cavity 11, an ink cavity 12, and a first valve core 13. The connecting cavity 11 and the ink cavity 12 are interconnected. The connecting cavity 11 has an open access end 111. The first valve core 13 is used to adjust the communication state between the connecting cavity 11 and the ink cavity 12. The first valve core 13 has a protrusion 131 protruding towards the access end 111 and an outer end face 132 near the access end 111. When the first valve core 13 adjusts the communication between the connecting cavity 11 and the ink cavity 12, ink filling can be performed; when the first valve core 13 cuts off the communication state between the connecting cavity 11 and the ink cavity 12, the ink flow channel can be cut off.

[0037] The filling container 20 includes a bottle body 21, which has an ink storage cavity 211 for storing ink. An outlet 22 is provided at the first direction D1 end of the bottle body 21, communicating with the ink storage cavity 211. The outlet 22 includes an ink outlet 221 and a pusher 222, both located at the first direction D1 end of the outlet 22. The first direction D1 extends along the direction of gravity. When the filling container 20 fills the ink cartridge 10, the outlet 22 is located below the ink storage cavity 211, allowing ink to enter the outlet 22 from the ink storage cavity 211 and fill the ink cartridge 10 via the ink outlet 221.

[0038] The bottle body 21 is also provided with a second valve core 23. The second valve core 23 is used to adjust the communication state between the inner cavity of the outlet section 22 and the ink storage cavity 211. When the second valve core 23 adjusts the communication between the inner cavity of the outlet section 22 and the ink storage cavity 211, the ink flow channel on the container side is opened, and the ink in the ink storage cavity 211 can enter the inner cavity of the outlet section 22. When the second valve core 23 cuts off the communication state between the inner cavity of the outlet section 22 and the ink storage cavity 211, the ink flow channel on the container side is closed.

[0039] When both the ink flow channel on the ink cartridge side and the ink flow channel on the container side are opened, in order to allow ink to be smoothly injected from the bottle 21 into the ink cartridge 10, a channel 30 is provided between the filling container 20 and the ink cartridge 10. The ink in the ink storage chamber 211 can be introduced into the ink chamber 12 through the channel 30, thereby realizing ink filling.

[0040] In the embodiments provided in this application, when the bottle body 21 is installed in the ink cartridge 10, the outlet 22 at least partially passes through the access end 111 into the engagement cavity 11, and the protrusion 131 passes through the ink outlet 221 and abuts against the second valve core 23, pushing the second valve core 23 to move, so that the ink flow channel on the ink cartridge 10 side and the ink flow channel on the container side are opened at the same time, and the ink can be smoothly injected into the ink cavity 12 from the ink storage cavity 211 through the outlet 22, the channel 30 and the engagement cavity 11 in sequence.

[0041] In one feasible implementation, refer to Figure 3 As shown, the channel portion 30 is located at the first direction D1 end of the outlet portion 22. After the bottle body 21 and ink cartridge 10 are installed, the protrusion 131 abuts against the second valve core 23 and pushes the second valve core 23 to move a certain distance, but does not abut against the bracket portion 24. At this time, the ink storage chamber 211 and the inner cavity of the outlet portion 22 are connected, that is, the movement adjustment of the second valve core 23 is in a connected state between the ink storage chamber 211 and the inner cavity of the outlet portion 22. When the push portion 22 at the first direction D1 end of the outlet portion 22... When the first valve core 13 is in contact with the first valve core 2, the connecting cavity 11 and the ink cavity 12 are connected. That is, the first valve core 13 adjusts the connecting cavity 11 and the ink cavity 12 to be in a connected state. Since the channel part 30 is located at the first direction D1 end of the outlet part 22, the channel part 30 connects the inner cavity of the outlet part 22 with the connecting cavity 11. Then, the ink in the ink storage cavity 211 can enter the ink cavity 12 in sequence through the inner cavity of the outlet part 22, the channel part 30 and the connecting cavity 11, thereby realizing the filling of ink into the ink cartridge 10.

[0042] In another feasible implementation, refer to Figure 4As shown, the bottle body also includes a support portion 24 and a force-applying component 25. The support portion 24 is fixed inside the bottle body 21. The second valve core 23 and the support portion 24 are connected through the force-applying component 25, which applies a force in the first direction D1 to the second valve core 23. When the bottle body 21 is installed in the ink cartridge 10, and the first valve core 13 abuts against the second valve core 23 and pushes the second valve core 23 to abut against the support portion 24, the ink storage chamber 211 is connected to the inner cavity of the outlet portion 22. That is, the second valve core 23 adjusts the ink storage chamber 211 and the inner cavity of the outlet portion 22 to be in a connected state. At this time, the force-applying component 25 applies a force in the first direction D1 to the second valve core 23, driving the second valve core 23 to move along the first direction D1, thereby pushing the first valve core 13 to move along the first direction D1, so that the first direction D1 of the outlet portion 22 is connected. A gap is formed between the end of the first valve core 13 and the outer end face 132 of the first valve core 13. This gap is the channel portion 30. At this time, the connecting cavity 11 is connected to the ink cavity 12. That is, the moving adjustment of the first valve core 13 is in the connected state between the connecting cavity 11 and the ink cavity 12. At this time, the gap between the first direction D1 end of the outlet portion 22 and the outer end face 132 connects the inner cavity of the outlet portion 22 with the connecting cavity 11. Then, the ink in the ink storage cavity 211 can enter the ink cavity 12 in sequence through the inner cavity of the outlet portion 22, the channel portion 30 and the connecting cavity 11, thereby realizing the filling of ink into the ink cartridge 10.

[0043] In both of the above embodiments, the ink filling process involves the first valve core 13 connecting the ink chamber 12 to the connecting chamber 11 and the second valve core 23 connecting the ink storage chamber 211 to the inner cavity of the outlet 22. Then, the channel portion 30 connects the inner cavity of the outlet 22 to the connecting chamber 11 to achieve ink flow. When the outlet 22 is inserted into the connecting chamber 11 at an angle, the protrusion 131 has difficulty passing through the ink outlet 221 and entering the inner cavity of the outlet 22. Consequently, it cannot abut against the second valve core 23 or push the second valve core 23 to move an effective distance before abutting against the bracket portion 24. Therefore, it is impossible for the inner cavity of the outlet 22 to connect with the ink storage chamber 211. Thus, when there is an alignment deviation between the bottle body 21 and the ink cartridge 10, it is not easy for the filling container 20 to open while the ink cartridge 10 side is not open, which can effectively prevent ink leakage during the ink filling process.

[0044] Since the gas and liquid exchange between the ink cartridge 10 and the filling container 20 is achieved through the channel section 30, therefore, referring to Figure 6 As shown, the channel portion 30 consists of at least two hollow structures 31 located on the first direction D1 end face of the outlet portion 22. The hollow structures connect the inner cavity of the outlet portion 22 and the connecting cavity 11. The push portion 222 is the part of the outlet portion 22 located between two adjacent hollow structures 31 at the first direction D1 end.

[0045] When the outlet section 22 is inserted into the connecting cavity 11, at least two hollow structures 31 are located inside the connecting cavity 11. The push section 222 between two adjacent hollow structures 31 abuts against the first valve core 13. The inner cavity of the outlet section 22 is connected to the connecting cavity 11 through the hollow structure 31. Thus, the ink in the ink storage cavity 211 can enter the ink cavity 12 through at least one hollow structure 31 (as a liquid channel), and the air in the ink cavity 12 can enter the bottle body 21 through at least one hollow structure 31 (as a gas channel), so that the gas-liquid exchange between the ink cartridge 10 and the filling container 20 can proceed smoothly, thereby ensuring ink filling efficiency.

[0046] To improve the fitting accuracy and stability between the ink cartridge 10 and the filling container 20, multiple correction sections 231 are provided on the outer periphery of the second valve core 23. The correction sections 231 cooperate with the inner wall of the outlet section 22. When the outlet section 22 is inserted into the engagement cavity 11 in an inclined position, the correction sections 231 can guide the outlet section 22 to be inserted in the correct position, thereby improving the fitting accuracy between the ink cartridge 10 and the filling container 20.

[0047] In one feasible embodiment, the outlet portion 22 is a tubular structure extending along the first direction D1, and the correction portion 231 is a rib structure extending along the first direction D1. A groove or recess that mates with the rib structure can be provided on the inner wall surface of the outlet portion 22. Since the rib structure extends along the first direction D1, when the outlet portion 22 is inserted into the engagement cavity 11, the rib structure guides the outlet portion 22 to insert into the engagement cavity 11 along the first direction D1. When the position of the outlet portion 22 becomes misaligned, the rib structure can contact the inner wall surface of the outlet portion 22 to apply a force to the outlet portion 22, thereby adjusting the outlet portion 22 to the correct position.

[0048] To further improve the fitting accuracy between the ink cartridge 10 and the filling container 20, a positioning ring protrusion 223 is provided at the first direction D1 end of the outlet portion 22, which is clearance-fitted with the protrusion 131. (Refer to...) Figure 7 As shown, the alignment ring protrusion 223 forms an ink outlet 221 at the first direction D1 end of the outlet portion 22. When the outlet portion 22 is inserted into the connecting cavity 11, the protrusion 131 can pass through the alignment ring protrusion 223, that is, through the ink outlet 221. The channel portion 30 is a groove 224 provided on the surface of the alignment ring protrusion 223. The groove 224 penetrates the inner side of the alignment ring protrusion 223 and the outer side of the outlet portion 22. When the outlet portion 22 is inserted into the connecting cavity 11, the alignment ring protrusion 223 is simultaneously located inside the connecting cavity 11. The groove 224 can connect the ink outlet 221 with the connecting cavity 11, thereby realizing the connection between the inner cavity of the outlet portion 22 and the connecting cavity 11.

[0049] To ensure that the protrusion 131 can abut against the second valve core 23 after being inserted into the ink outlet 221, the size of the alignment ring protrusion 223 is smaller than the size of the protrusion 131 in the first direction D1. After the outlet 22 is inserted into the engagement cavity 11, the outer end face 132 of the first valve core 13 abuts against the push part 222. If the size of the protrusion 131 in the first direction D1 is smaller than the size of the alignment ring protrusion in the first direction D1, it cannot contact the second valve core 23, and thus cannot push the second valve core 23 to move, thereby preventing the ink storage cavity 211 from communicating with the inner cavity of the outlet 22.

[0050] To improve the sealing between the second valve core 23 and the bottle body 21 and prevent ink leakage from the ink storage chamber 211, in the embodiments provided in this application, reference is made to... Figure 8 As shown, the second valve core 23 includes a sealing portion 232 that can fit against the inner wall of the bottle body 21, and a resilient sealing gasket 233 is provided on the first direction D1 side of the sealing portion 232. Before the filling container 20 and the ink cartridge 10 are installed, the sealing portion 232 closes the opposite end of the first direction D1 of the inner cavity of the outlet portion 22 to cut off the communication between the ink storage chamber 211 and the inner cavity of the outlet portion 22. The resilient sealing gasket 233 on the first direction D1 side of the sealing portion 232 can further improve the sealing between the sealing portion 232 and the outlet portion 22 to prevent ink leakage.

[0051] When the second valve core 23 moves to the point where the ink storage chamber 211 communicates with the inner cavity of the outlet section 22, during the ink filling process, in order to maintain the air pressure balance inside the bottle 21, in one feasible embodiment, refer to... Figure 3 and Figure 4 As shown, an air inlet 225 is provided on the inner wall of the outlet section 22. The projection of the air inlet 225 in the first direction D1 is located on the sealing gasket 233. When the sealing section 232 moves with the second valve core 23 to the ink flow channel on the container side and opens, the air inlet 225 connects the inside of the bottle 21 with the outside. During the ink filling process, in order to balance the air pressure inside and outside the bottle 21, the air inlet 225 allows outside air to enter the bottle 21, thereby ensuring that the ink in the bottle 21 can be smoothly injected into the ink cartridge 10 and ensuring ink filling efficiency.

[0052] When the second valve core 23 cuts off the communication between the inner cavity of the outlet section 22 and the ink storage cavity 211, the sealing part 232, along with the movement of the second valve core 23, seals the opposite end of the first direction D1 of the inner cavity of the outlet section 22. At this time, in order to prevent ink leakage in the bottle 21, the air inlet 225 needs to be sealed to cut off the communication between the bottle 21 and the outside. Therefore, the projection of the air inlet 225 on the first direction D1 falls within the coverage area of ​​the sealing gasket 233. When the sealing part 232 seals the inner cavity of the outlet section 22, the sealing gasket 233 can simultaneously seal the air inlet 225, thereby preventing ink leakage.

[0053] When the refill container 20 is installed in the ink cartridge 10, in order to improve the connection stability between the ink cartridge 10 and the refill container 20, refer to Figure 1 and Figure 9 As shown, the ink cartridge 10 has recesses 14 on both sides of the opposite side in the second direction D2, where the second direction D2 is the width direction of the ink cartridge 10. Figure 6 As shown, the filling container 20 includes two limiting arms 26. Each limiting arm 26 has a first end and a second end. The first end of the limiting arm 26 is connected to the bottle body 21. The second end of the limiting arm 26 can undergo elastic deformation in the second direction D2. The second end of the limiting arm 26 is provided with a locking protrusion 261, which abuts against the corresponding recess 14 in the first direction D1.

[0054] Before the filling container 20 is connected to the ink cartridge 10, the second ends of the two limiting arms 26 are simultaneously pushed apart along the second direction D2. After the outlet part 22 is correctly installed in the engagement cavity 11, due to the elasticity of the limiting arms 26, the second ends of the two limiting arms 26 can simultaneously approach the ink cartridge 10 and extend into the recess 14. When the engaging protrusion 261 of the second end of the limiting arm 26 abuts against the corresponding recess 14 in the first direction D1, the filling container 20 and the ink cartridge 10 are fixed, and ink can then be refilled.

[0055] To improve the ease of installation of the filling container 20 and the ink cartridge 10, an operating arm 27 is provided at the second end of the two limiting arms 26. The two operating arms 27 are located on opposite sides of the second ends of the two limiting arms 26, that is, each operating arm 27 is set on the outside of the corresponding limiting arm 26. The operating arm 27 extends in the opposite direction of the first direction D1. In the first direction D1, the length of the operating arm 27 is greater than the length of the limiting arm 26.

[0056] When installing the refill container 20, force can be applied to bring the two operating arms 27 closer together, thereby causing the two limiting arms 26 to move away from each other along the second direction D2. This facilitates the installation of the refill container 20 into the ink cartridge 10. After the refill container 20 is accurately installed, the two operating arms 27 are released, causing the two limiting arms 26 to move closer together and into their respective recesses 14, abutting against the recesses 14 in the first direction D1 to securely connect the refill container 20 to the ink cartridge 10. In the first direction D1, the length of the operating arms 27 is greater than the length of the limiting arms 26, which improves the operability of installing the refill container 20 and facilitates the connection between the refill container 20 and the ink cartridge 10.

[0057] After the ink cartridge 10 is connected to the refill container 20, in order to improve the seal between the ink cartridge 10 and the refill container 20 and prevent ink leakage during the ink filling process, refer to... Figure 3 and Figure 4As shown, the ink cartridge 10 also includes a sealing ring 15, which is press-fitted to the outer wall of the outlet portion 22. After the outlet portion 22 is inserted into the engagement cavity 11, the sealing ring 15 can fit tightly against the outer wall surface of the outlet portion 22, improving the sealing between the outlet portion 22 and the engagement cavity 11 and effectively preventing ink leakage.

[0058] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A filling container for introducing ink into an ink cartridge, the ink cartridge including a connecting cavity, an ink cavity, and a first valve core, the connecting cavity being in communication with the ink cavity, the connecting cavity having an open access end, the first valve core being for adjusting the communication state between the connecting cavity and the ink cavity, the first valve core having a protrusion protruding toward the access end and an outer end face near the access end; Its features are: The filling container includes a bottle body with an ink storage cavity for storing ink. A discharge section is provided at a first direction end of the bottle body, and the discharge section communicates with the ink storage cavity. The discharge section includes an ink outlet and a push section, both of which are located at the first direction end of the discharge section. A second valve core is also provided inside the bottle body, which is used to adjust the communication state between the inner cavity of the discharge section and the ink storage cavity. A channel is provided between the filling container and the ink cartridge, and ink in the ink storage chamber can be introduced into the ink chamber through the channel. in: The outlet portion extends at least partially through the inlet end into the junction cavity, the protrusion passes through the ink outlet and abuts against the second valve core, the junction cavity communicates with the ink cavity, the ink storage cavity communicates with the inner cavity of the outlet portion, and the inner cavity of the outlet portion communicates with the junction cavity through the channel portion.

2. The filling container according to claim 1, characterized in that, The channel portion consists of at least two hollow structures located on the first direction end face of the outlet portion. The hollow structures connect the inner cavity of the outlet portion with the joining cavity. The pushing portion is the part of the first direction end of the outlet portion located between two adjacent hollow structures.

3. The filling container according to claim 1, characterized in that, The outer periphery of the second valve core is provided with multiple correction sections, which cooperate with the inner wall of the outlet section.

4. The filling container according to claim 3, characterized in that, The outlet is a tubular structure extending along the first direction, and the correction part is a rib structure extending along the first direction.

5. The filling container according to claim 1, characterized in that, The first direction end of the outlet portion is provided with an alignment ring protrusion that fits with the protrusion portion with a clearance. The channel portion is a groove provided on the surface of the alignment ring protrusion. The groove penetrates the inner side of the alignment ring protrusion and the outer side of the outlet portion. In the first direction, the size of the alignment ring protrusion is smaller than the size of the protrusion portion.

6. The filling container according to claim 1, characterized in that, The second valve core includes a sealing portion that can fit against the inner wall of the bottle, and an elastic sealing gasket is provided on the first direction side of the sealing portion.

7. The filling container according to claim 6, characterized in that, The inner wall of the outlet is provided with an air inlet hole, and the projection of the air inlet hole in the first direction is located on the sealing gasket.

8. The filling container according to claim 1, characterized in that, The ink cartridge has recesses on both sides in the second direction. The filling container includes two limiting arms, each with a first end and a second end. The first end of the limiting arm is connected to the bottle body, and the second end of the limiting arm can undergo elastic deformation in the second direction. The second end of the limiting arm has a locking protrusion that abuts against the corresponding recess in the first direction. The second direction is orthogonal to the first direction.

9. The filling container according to claim 8, characterized in that, The second end of the limiting arm is provided with an operating arm, and the two operating arms are located on opposite sides of the second ends of the two limiting arms. The operating arms extend in the opposite direction to the first direction, and in the first direction, the length of the operating arm is greater than the length of the limiting arm.

10. The filling container according to claim 1, characterized in that, The ink cartridge also includes a sealing ring, which is interference-fitted with the outer wall of the outlet portion.

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