Ink injection device for ink box

Abstract

The utility model discloses an ink box ink injection device, an ink box comprises a shell, the shell is provided with a first wall, the first wall is provided with an ink injection hole, the ink box ink injection device comprises a support, in a first direction, the support comprises a substrate, the substrate is provided with a bearing part, the bearing part comprises a containing cavity, and the containing cavity is communicated with the ink injection hole; the sealing plug is arranged in the containing cavity, the sealing plug comprises a cylindrical part, the cylindrical part is communicated with the ink injection hole, the cylindrical part is provided with a bottom sealing part protruding out of the surface of the base plate, and the bottom sealing part abuts against the first wall; the ink adding bottle comprises an ink storage cavity and a bottle mouth part, and a side sealing part abutting against the outer side of the bottle mouth part is arranged on the inner wall of the cylindrical piece in a protruding mode. According to the ink filling device for the ink box, the sealing plug, the bottle mouth part and the first wall are matched to form the closed interval for limiting the overflow of the ink, and the ink flowing out of the bottle mouth part can be limited in the closed interval even if entering the ink box without the ink filling hole, and finally enters the ink box in a pressure-bearing state, so that the ink filling efficiency is improved. And ink leakage in the ink injection process is prevented.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, and in particular to an ink cartridge refilling device. Background Technology

[0002] There is a type of ink cartridge with a built-in ink refill port. To reduce usage costs, users need to refill the ink themselves to reuse the cartridge, and manufacturers have launched a series of ink refilling tools accordingly. However, these tools have some drawbacks in use, such as ink leakage caused by poor fit between the tool and the ink container or cartridge during refilling. Therefore, there is still room for improvement. Utility Model Content

[0003] The purpose of this invention is to provide an ink cartridge refilling device that improves the sealing between the refilling device and the ink cartridge, preventing ink leakage during the refilling process.

[0004] This utility model provides an ink cartridge refilling device, the ink cartridge including a housing, the housing having a first wall, the first wall having an ink filling hole, the ink cartridge refilling device including:

[0005] The bracket is detachably connected to the housing. In a first direction, the bracket includes a base plate corresponding to the first wall. The base plate is provided with a receiving portion, which includes a receiving cavity that communicates with the ink injection hole.

[0006] A sealing plug is disposed within the accommodating cavity. The sealing plug includes a cylindrical component that communicates with the ink injection hole. The cylindrical component has a bottom sealing portion that protrudes from the surface of the substrate. The bottom sealing portion abuts against the first wall. The ink injection hole is located within the projection range of the bottom sealing portion in the first direction.

[0007] An ink bottle, comprising an ink storage chamber and a nozzle, wherein the ink storage chamber is used to store ink, and a side seal is provided on the inner wall of the cylindrical component, which abuts against the outer side of the nozzle.

[0008] In the ink cartridge refilling device described above, preferably, in the first direction, the side sealing portion includes a first convex ring and a second convex ring spaced apart.

[0009] In the ink cartridge refilling device described above, preferably, the inner diameters of the first convex ring and the second convex ring are different.

[0010] In the ink cartridge refilling device described above, preferably, the outer side of the cylindrical component has a stepped structure and a stepped surface, and the receiving cavity has an abutting wall that abuts against the stepped surface.

[0011] In the ink cartridge refilling device described above, preferably, a positioning part is provided on the side of the first wall facing the bracket, and a positioning mating part is provided on the base plate, wherein the positioning part and the positioning mating part can form a positioning mating.

[0012] In the ink cartridge refilling device described above, preferably, the housing includes a top cover and a bottom cover connected to each other, a first wall is located on the top cover, and in a second direction, the top cover has a flange portion protruding from the bottom cover, and the base plate is provided with a snap-fit ​​portion that mates with the flange portion, and the second direction is orthogonal to the first direction.

[0013] In the ink cartridge refilling device described above, preferably, the flange portion has a limiting portion for restricting the substrate from moving in a third direction, the third direction being orthogonal to the first direction and the second direction, respectively.

[0014] In the ink cartridge refilling device described above, preferably, the bottom shell is provided with an outlet for discharging ink, and the ink cartridge refilling device includes a protective cover for sealing the outlet.

[0015] In the ink cartridge refilling device described above, preferably, the protective cover has a base portion on the side away from the bracket, and the base portion has a flat support surface on the side opposite to the ink cartridge.

[0016] In the ink cartridge refilling device described above, preferably, a sealing gasket is provided on the support surface, and the sealing gasket is correspondingly provided with the outlet portion.

[0017] Compared with the prior art, the bracket of the ink cartridge refilling device of this utility model can be stably connected to the ink cartridge. The cooperation between the sealing plug, the nozzle, and the first wall can form a closed area that restricts ink overflow. Even if the ink flowing out from the nozzle does not enter the ink cartridge through the ink filling hole, it can be confined within the closed area and eventually enter the ink cartridge under pressure. This reduces the fitting accuracy and sealing requirements between the ink bottle and the ink filling hole, and prevents ink leakage during the ink filling process. Attached Figure Description

[0018] Figure 1 This is a perspective view of the bracket and the housing after they are connected, according to Embodiment 1 of this utility model;

[0019] Figure 2 This is a bottom view of the bracket and housing provided in Embodiment 1 of this utility model after they are connected;

[0020] Figure 3 This is a perspective view of the ink cartridge and ink cartridge filling device connected according to Embodiment 1 of this utility model;

[0021] Figure 4 yes Figure 3 Cross-sectional view;

[0022] Figure 5 yes Figure 4 A magnified view of part A in the middle;

[0023] Figure 6 This is a first-view perspective perspective view of the housing provided in Embodiment 1 of this utility model;

[0024] Figure 7 This is a second-view perspective perspective view of the housing provided in Embodiment 1 of this utility model;

[0025] Figure 8 This is a first-view perspective perspective view of the bracket provided in Embodiment 1 of this utility model;

[0026] Figure 9 This is a second-view perspective perspective view of the bracket provided in Embodiment 1 of this utility model;

[0027] Figure 10 This is a cross-sectional view of the cylindrical component provided in Embodiment 1 of this utility model;

[0028] Figure 11 This is a perspective view of the protective cover provided in Embodiment 1 of this utility model;

[0029] Figure 12 This is a perspective view of the bracket and the housing after they are connected, according to Embodiment 2 of this utility model;

[0030] Figure 13 This is a perspective view of the ink cartridge and ink cartridge filling device connected according to Embodiment 2 of this utility model;

[0031] Figure 14 yes Figure 13 Cross-sectional view;

[0032] Figure 15 yes Figure 14 A magnified view of part B in the middle;

[0033] Figure 16 This is a perspective view of the housing provided in Embodiment 2 of this utility model;

[0034] Figure 17 This is a perspective view of the bracket provided in Embodiment 2 of this utility model;

[0035] Figure 18 This is a cross-sectional view of the bracket provided in Embodiment 2 of this utility model;

[0036] Figure 19This is a front view of the housing and protective cover after they are connected, as provided in Embodiment 2 of this utility model;

[0037] Figure 20 This is a perspective view of the cylindrical component provided in Embodiment 2 of this utility model.

[0038] Explanation of reference numerals in the attached figures:

[0039] 10-Shell, 11-Top cover, 111-First wall, 112-Ink injection hole, 113-Flange, 114-Positioning part, 1141-First protrusion, 1142-Second protrusion, 1143-Third protrusion, 115-Limiting part, 116-Air guide hole, 12-Bottom shell, 121-Outlet part;

[0040] 20-Support, 21-Baseboard, 211-Positioning and mating part, 2111-First side, 2112-Second side, 2113-Third side, 2114-Fourth side, 2115-Protrusion, 212-Snap-fit ​​part, 2121-First protrusion, 2122-Second protrusion, 2123-First snap-fit ​​point, 2124-Second snap-fit ​​point, 213-Sealing plug, 22-Receiving part, 221-Accommodating cavity, 2211-Abutting wall;

[0041] 30-Sealing plug, 31-Cylindrical part, 311-Bottom seal, 312-Side seal, 3121-First convex ring, 3122-Second convex ring, 313-Stepped surface;

[0042] 40 - Ink bottle; 41 - Ink reservoir; 42 - Bottle nozzle;

[0043] 50 - Protective cover, 51 - Base part, 511 - Support surface, 512 - Sealing gasket, 52 - First side plate, 53 - Second side plate, 54 - Third side plate, 55 - Bottom plate, 56 - Mounting cavity;

[0044] D1 - First direction, D2 - Second direction, D3 - Third direction. Detailed Implementation

[0045] 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.

[0046] Reference Figure 1 , Figure 3 , Figure 6 , Figure 12 , Figure 13 as well as Figure 16 As shown, this utility model provides an ink cartridge refilling device. The ink cartridge includes a housing 10, the housing 10 having a first wall 111, and an ink filling hole 112 provided on the first wall 111. The ink cartridge refilling device includes a bracket 20, a sealing plug 30, and an ink bottle 40, wherein:

[0047] Reference Figure 1 and Figure 8 As shown, the bracket 20 is detachably connected to the housing 10. In the first direction D1, the bracket 20 includes a base plate 21 corresponding to the first wall 111. The first direction D1 is parallel to the direction of gravity. When the bracket 20 is connected to the housing 10, the first wall 111 and the base plate 21 are arranged opposite to each other in the direction of gravity. The base plate 21 is provided with a receiving part 22 that cooperates with the ink bottle 40. The receiving part 22 includes a receiving cavity 221, which communicates with the ink filling hole 112.

[0048] Reference Figure 5 and Figure 10 As shown, the sealing plug 30 is disposed in the accommodating cavity 221. The sealing plug 30 includes a cylindrical member 31, which communicates with the ink filling hole 112. The cylindrical member 31 has a bottom sealing portion 311 protruding from the surface of the substrate 21. When the bracket 20 is connected to the housing 10, the bottom sealing portion 311 abuts against the first wall 111 to form a seal between the cylindrical member 31 and the first wall 111 to prevent ink from leaking from the bottom sealing portion 311. The ink filling hole 112 is located within the projection range of the bottom sealing portion 311 in the first direction D1, so that the ink can smoothly enter the ink cartridge through the ink filling hole 112 when ink is filled.

[0049] Continue to refer to Figure 4 , Figure 5 and Figure 10 As shown, the ink bottle 40 includes an ink storage chamber 41 and a nozzle 42. The ink storage chamber 41 is used to store ink. A side seal 312 protrudes from the inner wall of the cylindrical component 31 and abuts against the outer side of the nozzle 42. When refilling the ink cartridge, the nozzle 42 needs to be installed inside the cylindrical component 31, with the outer side of the nozzle 42 abutting against the side seal 312, so that there is a seal between the outer side of the nozzle 42 and the cylindrical component 31.

[0050] After the bracket 20 is connected to the housing 10, the bottom seal 311 of the cylindrical component 31 abuts against the first wall 111, and the outer side of the nozzle 42 abuts against the side seal 312 of the cylindrical component 31. The ink in the ink storage chamber 41 can flow out through the nozzle 42 and then enter the ink cartridge through the ink filling hole 112. During the ink filling process, a closed area can be formed between the first wall 111, the nozzle 42 and the cylindrical component 31. This closed area can restrict the ink from overflowing. Even if the ink flowing out from the nozzle 42 does not enter the ink cartridge through the ink filling hole 112, it can be confined within the closed area. Under pressure, it can still enter the ink cartridge through the ink filling hole 112. This reduces the fitting accuracy and sealing requirements between the ink bottle 40 and the ink filling hole 112, prevents ink leakage during the ink filling process, and makes the ink cartridge filling device applicable to different models of ink cartridges, with high versatility.

[0051] In the embodiments provided in this application, reference is made to Figure 10As shown, in the first direction D1, the side sealing part 312 includes a first protruding ring 3121 and a second protruding ring 3122 spaced apart. The first protruding ring 3121 and the second protruding ring 3122 are disposed on the inner wall of the cylindrical part 31. When the bottle mouth part 42 is installed in the cylindrical part 31, the first protruding ring 3121 and the second protruding ring 3122 respectively abut against the outer side of the bottle mouth part 42 in the first direction D1 to improve the sealing performance of the connection between the bottle mouth part 42 and the cylindrical part 31.

[0052] To accommodate the contour shape of the outer side of the bottle mouth 42, the inner diameters of the first convex ring 3121 and the second convex ring 3122 are different. Therefore, the inner diameters of the first convex ring 3121 and the second convex ring 3122 can be set according to the contour of the outer side of the bottle mouth 42, so that the first convex ring 3121 and the second convex ring 3122 can abut against different positions on the outer side of the bottle mouth 42 to form a sealing connection.

[0053] The inner diameters of the first convex ring 3121 and the second convex ring 3122 only need to form an interference fit with a specific position on the outer side of the bottle mouth 42 to meet the sealing requirements, and are not limited here.

[0054] During the ink filling process, the sealing plug 30 is subjected to a pushing force from the ink bottle 40. This pushing force may cause the largest portion of the sealing plug 30 in the second direction D2 or the third direction D3 to protrude from the substrate 21 in the opposite direction of the first direction D1, thereby causing the sealing plug 30 to shift relative to the substrate 21 in the first direction D1 and affecting the sealing performance. Therefore, the outer side of the cylindrical member 31 is stepped and has a stepped surface 313, and the receiving cavity 221 has an abutting wall 2211 that abuts against the stepped surface 313. When the sealing plug 30 is installed in the accommodating cavity 221, the stepped surface 313 abuts against the abutting wall 2211 to seal the connection between the sealing plug 30 and the accommodating cavity 221. The abutment between the stepped surface 313 and the abutting wall 2211 can strengthen the fit between the sealing plug 30 and the substrate 21. When the sealing plug 30 is pushed by the ink bottle 40, the abutting wall 2211 can support the sealing plug 30 in the first direction D1, thereby preventing the sealing plug 30 from shifting relative to the substrate 21 in the first direction D1.

[0055] See Figure 1 , Figure 3 , Figure 6 as well as Figure 8As shown, when the bracket 20 is connected to the housing 10, in order to improve the stability of the connection between the bracket 20 and the housing 10 and ensure the smooth progress of the ink filling process, in the embodiment provided in this application, a positioning part 114 is provided on the side of the first wall 111 facing the bracket 20, and a positioning mating part 211 is provided on the base plate 21. The positioning part 114 and the positioning mating part 211 can form a positioning fit. Through the positioning fit between the positioning part 114 and the positioning mating part 211, the bracket 20 can be accurately and stably connected to the housing 10, thereby improving the reliability of the ink cartridge filling device.

[0056] After the bracket 20 is accurately installed in the housing 10, its position needs to be fixed to facilitate the ink filling process. In one feasible embodiment, refer to... Figure 6 As shown, the housing 10 includes a top cover 11 and a bottom cover 12 connected to each other. A first wall 111 is located on the top cover 11 in the second direction D2. The top cover 11 has a flange 113 protruding from the bottom cover 12. (Refer to...) Figure 8 As shown, the substrate 21 is provided with a snap-fit ​​portion 212 that mates with the flange portion 113. The second direction D2 is orthogonal to the first direction D1. The second direction D2 is the width direction of the housing 10. The flange portion 113 is provided on opposite sides of the bottom shell 12 along the width direction of the housing 10. The snap-fit ​​portion 212 is provided on opposite sides of the substrate 21 in the second direction D2. The connection between the bracket 20 and the housing 10 is realized through the engagement of the snap-fit ​​portion 212 and the flange portion 113.

[0057] The engagement between the snap-fit ​​portion 212 and the flange portion 113 allows for the fixation of the bracket 20 and the housing 10 only in the first direction D1 and the second direction D2. To prevent the bracket 20 from moving along the length of the housing 10, refer to... Figure 7 As shown, the flange portion 113 has a limiting portion 115, which restricts the movement of the substrate 21 in a third direction D3. The third direction D3 is orthogonal to the first direction D1 and the second direction D2, respectively, and the third direction D3 is the length direction of the housing 10. When the bracket 20 and the housing 10 are connected to the flange portion 113 through the engagement of the snap-fit ​​portion 212, the limiting portion 115 abuts against the snap-fit ​​portion 212, thereby restricting the movement of the substrate 21 along the length direction of the housing 10, thus fixing the bracket 20 to the housing 10.

[0058] In the embodiments provided in this application, reference is made to Figure 2 and Figure 7 As shown, the bottom shell 12 is provided with an outlet 121, which is used to outlet ink. When the ink cartridge is installed in the printing device, the outlet 121 can communicate with the ink supply component of the printing device to supply ink to the printing device. During the ink refilling process, the outlet 121 needs to be closed, and the ink cartridge can only be installed in the printing device after it is full of ink. Therefore, referring to... Figure 3As shown, the ink cartridge refilling device also includes a protective cover 50, which is used to close the outlet section 121 and prevent ink from leaking from the outlet section 121 during ink refilling.

[0059] In one feasible implementation, refer to Figure 11 As shown, the protective cover 50 has a base portion 51 on the side away from the bracket 20. The base portion 51 has a flat support surface 511 on the side away from the ink cartridge. The flat support surface 511 allows the protective cover 50 to have sufficient contact area with the desktop, thus enabling it to fit stably against the desktop. During the ink filling process, the housing 10 is supported on the base portion 51, and the protective cover 50 can provide stable support for the housing 10, allowing the ink filling process to proceed smoothly.

[0060] In order to further improve the sealing between the outlet part 121 and the base part 51, a sealing gasket 512 is provided on the base part 51. The sealing gasket 512 is correspondingly provided with the outlet part 121. In the first direction D1, the projection of the outlet part 121 is located within the projection range of the sealing gasket 512, so that the sealing gasket 512 can completely seal the outlet part 121.

[0061] The ink filling process of the ink cartridge filling device of this utility model is as follows: First, connect the bracket 20 and the housing 10, install the substrate 21 at the position opposite to the first wall 111, and realize the positioning of the substrate 21 through the positioning part 114 and the positioning mating part 211.

[0062] The bracket 20 is then fixedly connected to the housing 10 by the cooperation of the flange 113 and the snap-fit ​​part 212. The ink cartridge is then installed on the protective cover 50. The support surface 511 of the protective cover 50 closes the outlet part 121. After the ink cartridge and the ink cartridge filling device are connected, ink can be filled.

[0063] Invert the ink bottle 40 so that the nozzle 42 is inserted into the cylindrical part 31. During the insertion process, the outside of the nozzle 42 presses against the side sealing part 312 of the cylindrical part 31, so that the nozzle 42 and the cylindrical part 31 can be sealed together. After the connection is completed, the ink in the ink storage chamber 41 can be injected into the ink cartridge.

[0064] The following examples illustrate the contents of this utility model. Those skilled in the art will understand that more ink cartridge refilling devices can be designed based on the following examples, all of which fall within the protection scope of this utility model.

[0065] Example 1

[0066] Reference Figures 1 to 11As shown, the base plate 21 of the bracket 20 in this embodiment is provided with four receiving parts 22. The four receiving parts 22 correspond to ink filling holes 112 at different positions on the top cover 11 of the housing 10, and are used to inject four colors of ink into ink cartridges of the same series. Each receiving part 22 corresponds to one color of ink.

[0067] Reference Figure 3 As shown, the positioning part 114 is a first protrusion 1141 provided on opposite sides of the first wall 111 along the third direction D3, referring to... Figure 8 As shown, the positioning and mating part 211 consists of the first side 2111 and the second side 2112 at opposite ends of the substrate 21 in the third direction D3. When the bracket 20 is installed on the housing 10, the first side 2111 and the second side 2112 respectively abut against the two first protrusions 1141 on the first wall 111 to fix the bracket 20 to the first wall 111. The positioning and mating part 211 can also be a through hole provided on the substrate 21 that can mate with the first protrusion 1141, so that the bracket 20 is positioned on the first wall 111. This is not limited here.

[0068] It should be noted that after the bracket 20 is fixed to the housing 10 by the positioning part 114 and the positioning mating part 211, the positioning part 114 also has a limiting function for the bracket 20. Since the positioning part 114 is a first protrusion 1141 provided on opposite sides of the first wall 111 along the third direction D3, the two first protrusions 1141 can restrict the bracket 20 from moving in the third direction D3.

[0069] Reference Figure 6 and Figure 7 As shown, the flange portion 113 is a protrusion provided on both sides of the top cover 11 in the second direction D2, referring to... Figure 8 and Figure 9 As shown, the snap-fit ​​portion 212 includes a first protrusion 2121 and a second protrusion 2122. The substrate 21 has snap-fit ​​portions 212 on both opposite sides in the second direction D2. When the bracket 20 is installed on the housing 10, refer to... Figure 1 as well as Figure 2 As shown, the flange portion 113 on the same side of the bracket 20 and the housing 10 abuts against the first protrusion 2121 to form a first locking point 2123, and the flange portion 113 abuts against the second protrusion 2122 to form a second locking point 2124. The bracket 20 and the housing 10 are locked together on opposite sides of the second direction D2 through two locking points, which improves the stability of the connection between the bracket 20 and the housing 10 and makes the bracket 20 and the housing 10 stably connected.

[0070] Continue to refer to Figure 1As shown, the limiting part 115 is a protrusion extending downward from the bottom of the flange part 113. Two limiting parts 115 are provided on the same flange part 113. The two limiting parts 115 are arranged along the third direction D3. When the bracket 20 is installed on the housing 10, the two limiting parts 115 abut against the snap-fit ​​part 212 on the same side in the third direction D3, thereby restricting the movement of the bracket 20 in the third direction D3 and further improving the stability of the connection between the bracket 20 and the housing 10.

[0071] The positioning engagement between the positioning part 114 and the positioning engagement part 211, the engagement between the flange part 113 and the snap-fit ​​part 212, and the engagement between the limiting part 115 and the snap-fit ​​part 212 enable the bracket 20 to be stably fixed to the housing 10, so as to facilitate the smooth ink filling process.

[0072] Reference Figure 5 As shown, after the bracket 20 is fixed to the housing 10, the bottom sealing part 311 of the cylindrical part 31 abuts against the first wall 111, and the stepped surface 313 on the outer side of the cylindrical part 31 abuts against the abutting wall 2211 of the accommodating cavity 221, so that a closed connection is formed between the cylindrical part 31, the first wall 111 and the accommodating cavity 221.

[0073] Reference Figure 5 and Figure 10 As shown, in this embodiment, the inner diameter of the first protruding ring 3121 of the side sealing portion 312 is smaller than the inner diameter of the second protruding ring 3122. The first protruding ring 3121 is positioned above the second protruding ring 3122 in the first direction D1. When the bottle mouth portion 42 is installed inside the cylindrical member 31, the first protruding ring 3121 and the second protruding ring 3122 are respectively squeezed by the bottle mouth portion 42. In order to adapt to the corresponding contour shape of the outer side of the bottle mouth portion 42, they deform and abut against the outer side of the bottle mouth portion 42, thereby sealing the bottle mouth portion 42 within the cylindrical member 31. The inner diameter of the first protruding ring 3121 can also be set to be larger than the inner diameter of the second protruding ring 3122, depending on the contour shape of the outer side of the bottle mouth portion 42, and is not limited here.

[0074] Reference Figure 11 As shown, the protective cover 50 includes a first side plate 52, a second side plate 53, a third side plate 54, and a base plate 55. The first side plate 52, the second side plate 53, and the third side plate 54 are all disposed on the base plate 55. The first side plate 52 and the second side plate 53 are arranged opposite to each other, and the third side plate 54 is disposed between the first side plate 52 and the second side plate 53. The first side plate 52, the second side plate 53, and the third side plate 54 enclose and form a mounting cavity 56. The ink cartridge is installed in the mounting cavity 56 to achieve connection with the protective cover 50.

[0075] The base portion 51 is located on the base plate 55. When the housing 10 is installed on the protective cover 50, the outlet portion 121 on the bottom housing 12 is positioned opposite to the base portion 51. The base portion 51 is provided with a sealing gasket 512, which seals the outlet portion 121 and thus seals the ink cartridge, allowing ink filling to proceed smoothly and preventing ink leakage from the outlet portion 121 during the ink filling process.

[0076] See Figure 8 and Figure 9 As shown, a semi-circular through hole is provided on the substrate 21 of this embodiment. The through hole is designed to accommodate the semi-circular protrusions on certain types of ink cartridges to improve the versatility of the bracket 20. Whether or not a similar through hole is provided on the substrate 21 can be set according to the specifications of the ink cartridge, and is not limited here.

[0077] During ink filling, the ink bottle 40 is squeezed to allow ink to enter the ink cartridge from the ink storage chamber 41. After the ink enters the ink cartridge, a positive pressure is generated. Since the ink cartridge is isolated from the outside atmosphere, the positive pressure inside the ink cartridge is maintained. When the ink bottle 40 is released, the gas inside the ink cartridge can enter the ink bottle 40, causing the gas pressure inside the ink cartridge to drop. Through multiple cycles of squeezing and releasing, gas-liquid exchange between the ink bottle 40 and the ink cartridge is achieved.

[0078] Example 2

[0079] Reference Figure 12 , Figures 16 to 18 As shown, the first wall 111 of this embodiment is provided with an ink filling hole 112 and multiple air vents 116. The bracket 20 is provided with a corresponding receiving part 22. When the bracket 20 is connected to the housing 10, the receiving part 22 and the ink filling hole 112 are positioned opposite each other. When the ink cartridge is not filled, the inside of the ink cartridge can communicate with the outside atmosphere through the air vents 116. When ink needs to be added, the multiple air vents 116 need to be blocked. Therefore, multiple sealing plugs 213 are provided on the substrate 21. The multiple sealing plugs 213 are correspondingly set with the multiple air vents 116. The multiple sealing plugs 213 are used to seal the multiple air vents 116, so that during the ink filling process, the ink cartridge can only exchange gas and liquid with the ink bottle 40, thereby ensuring the smooth progress of ink filling.

[0080] Reference Figure 12 , Figure 13 , Figure 16 as well as Figure 17As shown, the positioning part 114 includes a second protrusion 1142 and a third protrusion 1143 disposed on the first wall 111. The second protrusion 1142 and the third protrusion 1143 are disposed at opposite ends of the first wall 111 along a third direction D3. There are two third protrusions 1143, which are arranged side by side with a gap between them. The positioning mating part 211 is the third side 2113 and the fourth side 21 of the substrate 21 at opposite ends of the third direction D3. 2114, the fourth side 2114 is provided with a protrusion 2115. When the bracket 20 is installed on the housing 10, the third side 2113 abuts against the second protrusion 1142, and the fourth side 2114 abuts against the two third protrusions 1143. At the same time, the protrusion 2115 is inserted into the gap between the two third protrusions 1143. In the second direction D2, the two ends of the protrusion 2115 abut against the two third protrusions 1143 respectively, thereby fixing the position of the bracket 20 on the housing 10.

[0081] The positioning and mating part 211 can also be a through hole provided on the substrate 21, corresponding to the positions of the second protrusion 1142 and the two third protrusions 1143. The positioning of the bracket 20 is achieved by the cooperation of the through hole with the second protrusion 1142 and the third protrusion 1143. This is not limited here.

[0082] The structure of the flange portion 113 and the snap-fit ​​portion 212 is similar to that in Embodiment 1. When the bracket 20 is connected to the housing 10, multiple snap-fit ​​points can be formed to fix the two together. The structure of the limiting portion 115 is also similar to that in Embodiment 1 to limit the movement of the bracket 20 in the third direction D3. It will not be described in detail here.

[0083] Reference Figure 15 and Figure 20 As shown, after the bracket 20 is connected to the housing 10, the bottom sealing portion 311 of the cylindrical member 31 abuts against the first wall 111, and the outer side of the cylindrical member 31 abuts against the inner wall surface of the accommodating cavity 221, so that a sealed connection is formed between the cylindrical member 31, the first wall 111, and the accommodating cavity 221. When the bottle mouth portion 42 is installed inside the cylindrical member 31, the first protruding ring 3121 and the second protruding ring 3122 on the inner side of the cylindrical member 31 abut against different positions on the outer side of the bottle mouth portion 42 to seal the bottle mouth portion 42 with the cylindrical member 31. The inner diameter of the first protruding ring 3121 and the second protruding ring 3122 can be set according to the shape of the outer side of the bottle mouth portion 42.

[0084] The structure of the protective cover 50 and the connection method between the ink cartridge and the protective cover 50 in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0085] 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. An ink cartridge refilling device, the ink cartridge comprising a housing, the housing having a first wall, the first wall having an ink filling hole, characterized in that, The ink cartridge refilling device includes: The bracket is detachably connected to the housing. In a first direction, the bracket includes a base plate corresponding to the first wall. The base plate is provided with a receiving portion, which includes a receiving cavity that communicates with the ink injection hole. A sealing plug is disposed within the accommodating cavity. The sealing plug includes a cylindrical component that communicates with the ink injection hole. The cylindrical component has a bottom sealing portion that protrudes from the surface of the substrate. The bottom sealing portion abuts against the first wall. The ink injection hole is located within the projection range of the bottom sealing portion in the first direction. An ink bottle, comprising an ink storage chamber and a nozzle, wherein the ink storage chamber is used to store ink, and a side seal is provided on the inner wall of the cylindrical component, which abuts against the outer side of the nozzle.

2. The ink cartridge ink loading device according to claim 1, wherein In the first direction, the side sealing portion includes a first convex ring and a second convex ring spaced apart.

3. The ink cartridge ink loading device according to claim 2, wherein The inner diameters of the first convex ring and the second convex ring are different.

4. The ink cartridge ink loading device of claim 1, wherein The outer side of the cylindrical component has a stepped structure and a stepped surface, and the accommodating cavity has an abutting wall that abuts against the stepped surface.

5. The ink cartridge ink loading device of claim 1, wherein The first wall has a positioning part on the side facing the bracket, and the base plate has a positioning mating part, and the positioning part and the positioning mating part can form a positioning mating.

6. The ink cartridge ink loading device of claim 1, wherein The housing includes a top cover and a bottom cover connected to each other. The first wall is located on the top cover. In a second direction, the top cover has a flange portion protruding from the bottom cover. The base plate is provided with a snap-fit ​​portion that mates with the flange portion. The second direction is orthogonal to the first direction.

7. The ink cartridge ink loading device of claim 6, wherein The flange portion has a limiting portion for restricting the substrate from moving in a third direction, which is orthogonal to the first direction and the second direction, respectively.

8. The ink cartridge ink loading device of claim 6, wherein The bottom shell is provided with an outlet section for discharging ink, and the ink cartridge refilling device includes a protective cover for sealing the outlet section.

9. The ink cartridge ink loading device of claim 8, wherein The protective cover has a base portion on the side away from the bracket, and the base portion has a flat support surface on the side opposite to the ink cartridge.

10. The ink cartridge ink loading device of claim 9, wherein The base portion is provided with a sealing gasket, which is correspondingly arranged with the outlet portion.

Images