An ink cartridge

Abstract

The present invention discloses an ink cartridge, comprising: an ink storage member, comprising a guide member and an ink bag, the guide member comprising a joint; a connecting member, comprising a receiving groove, the receiving groove being formed by a depression of the surface of the connecting member in a direction opposite to a second direction; wherein: the joint member comprises a main body and an external support member, the external support member being elastically deformable in a third direction; the external support member comprising a top support member and a side support member; in a direction opposite to the second direction, the top support member abuts against the wall surface of the receiving groove; in the third direction, the side support member abuts against the corresponding side wall of the receiving groove. The present invention utilizes the top support member to abut against the connecting member to prevent the joint member and the connecting member from relative movement in the second direction, and the side support member to abut against the connecting member to prevent the joint member and the connecting member from offsetting in the width direction of the ink cartridge. In the installed state, the external force borne by the guide member is easily transmitted to the connecting member, effectively preventing the ink storage member from being dislocated or the ink cartridge from disintegrating due to positional offset or deflection of the joint member.

Description

Technical Field

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

[0002] Existing ink bag-type ink cartridges are generally divided into two parts: an ink reservoir and a connector. These two parts are manufactured separately and assembled together using a snap-fit ​​mechanism. The ink reservoir has an outlet for discharging ink and a flexible bag for storing ink.

[0003] Currently, the industry has proposed some quick-release structural solutions for ink bag-type ink cartridges that facilitate the disassembly and reassembly of the ink storage components and connectors, aiming to reuse the connectors by replacing the ink storage components. The existing structural solutions of this type have poor matching stability between the output portion and the connector. External forces on the output portion in the installed state are not easily transmitted to the connector, making it prone to positional displacement or deflection. Furthermore, the mechanical properties of the resin material used to make the output portion are generally inferior to those of the resin material used to make the connector. Therefore, when installed, the output portion is more prone to deformation and breakage than the connector, which can cause the ink storage component to dislocate and the ink cartridge to disintegrate. Existing structural solutions of this type present safety hazards that affect the use of the ink cartridge. Summary of the Invention

[0004] The purpose of the present invention is to provide an ink cartridge to solve the problem that the outlet portion of the current ink bag type ink cartridge is easily displaced or deflected when installed, thereby improving the matching stability between the connecting part and the ink storage part.

[0005] The present invention provides an ink cartridge, comprising:

[0006] an ink storage member, the ink storage member including a guide member and an ink bag, the guide member being in communication with the ink bag, the guide member including a joint portion, the joint portion being protruding from a first direction end of the ink bag, the first direction being an installation direction of the ink cartridge;

[0007] a connecting member, the connecting member including a receiving groove, the receiving groove being formed by a surface of the connecting member being recessed in a direction opposite to a second direction, the second direction being a plumb bob direction, the engaging portion being at least partially located in the receiving groove;

[0008] in:

[0009] The joint portion includes a main body and two outer supporting members, wherein the outer supporting members are elastically deformable along a third direction, the third direction being orthogonal to the first direction and the second direction, and the two outer supporting members are arranged on opposite sides of the main body along the third direction;

[0010] The outer support member includes a top support portion and a side support portion, wherein in the third direction, one end of the top support portion is connected to the main body portion, and the other end of the top support portion is connected to the side support portion;

[0011] When the ink cartridge is in an installed state, the supporting portion abuts against a wall surface of the accommodating groove in a direction opposite to the second direction;

[0012] In the third direction, the side abutment portion abuts against the corresponding side wall of the accommodating groove;

[0013] In the second direction, the edge of the side support portion is flush with the edge of the connecting member.

[0014] An ink cartridge as described above, wherein preferably, the ink cartridge further includes a first limiting structure and a second limiting structure, the first limiting structure being used to limit the relative movement of the joint and the connecting member in the first direction, and the second limiting structure being used to limit the relative movement of the joint and the connecting member in the second direction.

[0015] An ink cartridge as described above, wherein preferably, the first limiting structure includes a positioning column and a positioning sleeve, the positioning column and the positioning sleeve are coaxially arranged, the extension direction of the positioning column is perpendicular to the first direction, and when the engaging portion is at least partially located in the accommodating groove, the positioning column and the positioning sleeve form a limiting fit.

[0016] The ink cartridge as described above, wherein preferably, the main body comprises a tube member and two plate members, the two plate members being arranged on opposite sides of the tube member along the third direction, the tube member being provided with a discharge channel therein, the discharge channel being in communication with the ink bag;

[0017] The positioning column is arranged in the accommodating groove, and the positioning sleeve is arranged on the plate component through.

[0018] An ink cartridge as described above, wherein preferably, the tube component includes a positioning protrusion, the positioning protrusion is protruding from a side of the tube component close to the accommodating groove, a rotation-stopping portion is protruding in the accommodating groove, and the rotation-stopping portion abuts against opposite sides of the positioning protrusion in the third direction.

[0019] An ink cartridge as described above, wherein preferably, the outer support member further includes a reinforcing rib, the reinforcing rib is connected to the top support portion, the reinforcing rib is arranged on the side opposite to the second direction of the plate member, and two of the reinforcing ribs are arranged on opposite sides of the tube member along the third direction.

[0020] An ink cartridge as described above, wherein preferably, the second limiting structure includes a first protrusion and a second protrusion, the first protrusion is arranged on the opposite side walls of the accommodating groove in the third direction, the first protrusion can abut against the corresponding side abutment, the second protrusion is arranged on the side of the side abutment facing the corresponding first protrusion, the first protrusion is arranged on the second direction side of the second protrusion, and in the second direction, the projection of the second protrusion at least partially falls on the first protrusion.

[0021] An ink cartridge as described above, wherein preferably, the guide component further includes an internal support component, the internal support component including a base plate and a main support rib, the base plate extends along the first direction, the main support ribs are provided on the second direction side and the opposite direction side of the second direction of the base plate, the main support ribs extend along the first direction, and a plurality of internal support protrusions are provided on the base plate and the main support ribs at intervals.

[0022] In the ink cartridge as described above, preferably, the inner supporting protrusion includes a rear protrusion, and the rear protrusion is provided at one end of the substrate in the opposite direction to the first direction.

[0023] An ink cartridge as described above, wherein preferably, the inner supporting protrusion also includes a front protrusion, the front protrusion is arranged on the base plate and / or the main support rib, the front protrusion is arranged on the first direction side of the rear protrusion, and in the second direction, the size of the front protrusion is smaller than the size of the rear protrusion.

[0024] Compared with the prior art, the present invention utilizes the top support portion to abut against the connecting piece, which can prevent the joint portion and the connecting piece from moving relative to each other in the second direction. The side abutment portion abuts against the connecting piece, which can prevent the joint portion and the connecting piece from shifting in the width direction of the ink cartridge. The connection stability between the connecting piece and the joint portion is improved from two directions. In the installed state, the external force borne by the lead-out component is more easily transmitted to the connecting piece, thereby effectively avoiding the dislocation of the ink storage component or the disintegration of the ink cartridge due to the offset or deflection of the position of the joint portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a perspective view of an installation portion of a printer provided by an embodiment of the present invention;

[0026] Figure 2 This is a diagram showing a state in which the ink cartridge provided by an embodiment of the present invention is separated from the supporting member;

[0027] Figure 3 This is a state diagram of the connecting member and the ink storage member provided by the embodiment of the present invention when connected;

[0028] Figure 4 is a partial three-dimensional diagram of a connector provided by an embodiment of the present invention;

[0029] Figure 5 is a cross-sectional view of an ink cartridge provided by an embodiment of the present invention taken along a second direction;

[0030] Figure 6 is a perspective diagram of a first perspective of an export component provided by an embodiment of the present invention;

[0031] Figure 7 is a perspective view of a second viewing angle of a derivation component provided by an embodiment of the present invention;

[0032] Figure 8 It is a top view of the export component provided by an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 100-cartridge;

[0035] 10-Ink reservoir, 11-Delivery component, 111-Joint portion, 1111-Main portion, 11111-Tube member, 11112-Plate member, 11113-Location protrusion, 11114-Delivery channel, 1112-External support member, 11121-Top support portion, 11122-Side support portion, 11123-Reinforcement rib, 12-Ink bag, 13-Inner support member, 131-Base plate, 132-Main support rib, 133-Inner support protrusion, 1331-Rear protrusion, 1332-Front protrusion;

[0036] 20-connecting piece, 21-accommodating groove, 211-rotation stop, 22-front end surface, 23-upper end surface, 24-ink outlet, 25-mounting groove, 26-chip;

[0037] 30-first limiting structure, 31-positioning column, 32-positioning sleeve;

[0038] 40 - second limiting structure, 41 - first protrusion, 42 - second protrusion;

[0039] 50 - supporting member, 51 - accommodating cavity, 52 - opening, 53 - first wall, 54 - second wall, 55 - bottom wall, 56 - first side wall, 57 - second side wall, 58 - fixing structure, 59 - second positioning portion;

[0040] 60-installation portion, 61-ink supply portion, 62-fixing bracket, 63-locking portion, 64-first positioning portion, 65-electrical connection portion;

[0041] D1-first direction, D2-second direction, D3-third direction. DETAILED DESCRIPTION

[0042] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0043] Reference Figure 1 As shown, the installation portion 60 of the printer includes an ink supply portion 61, a fixing bracket 62, a locking portion 63, and two first positioning portions 64. The fixing bracket 62 includes an electrical connection portion 65. The ink supply portion 61 is provided on the surface of the fixing bracket 62 in the opposite direction to the installation direction of the ink cartridge 100 (i.e., the first direction D1). The electrical connection portion 65 is movably provided on the surface of the fixing bracket 62 in the opposite direction to the installation direction of the ink cartridge 100 (i.e., the first direction D1). The electrical connection portion 65 is located in the +D3 direction of the ink supply portion 61. Figure 2 As shown, the ink cartridge 100 of the present invention is removably mounted within a support member 50 of a mounting portion 60. The support member 50 is open on the side opposite to the second direction D2. The support member 50 includes a receiving chamber 51. When the ink cartridge 100 is mounted on the support member 50, a combined unit is formed, which can be connected to the mounting portion 60 along the first direction D1. The support member 50 is generally in the shape of a rectangular parallelepiped with an opening. The support member 50 includes a receiving chamber 51, an opening 52, a first wall 53, a second wall 54, a bottom wall 55, a first side wall 56, and a second side wall 57. The bottom wall 55 is located on the second direction D2 side of the opening 52, the first wall 53 is located on the first direction D1 side of the second wall 54, and the first side wall 56 and the second side wall 57 are arranged along the third direction D3. The first wall 53 is the wall on the front end side in the mounting direction.

[0044] The support member 50 also includes a fixing structure 58 and a second positioning portion 59. Two second positioning portions 59 are provided on the first wall 53. The second positioning portions 59 may be holes. The fixing structure 58 may be a slot structure with a serpentine channel formed therein. The first wall 53 is provided with an entrance to the slot structure. The locking portion 63 enters through the entrance and moves along the serpentine channel to a locked position. When the support member 50 is mounted on the mounting portion 60, the second positioning portions 59 combine with the first positioning portion 64 to position the support member 50 approximately perpendicular to the insertion direction. The fixing structure 58 combines with the locking portion 63 to prevent the support member 50 from being removed from the mounting portion 60.

[0045] The ink cartridge 100 provided in the present application includes an ink storage member 10 and a connecting member 20. The ink storage member 10 and the connecting member 20 are detachably connected so that the connecting member 20 can be reused by replacing the ink storage member 10. However, the matching stability of the ink storage member 10 and the connecting member 20 in this type of structural solution is poor. The external force borne by the outlet member in the ink storage member 10 in the installed state is not easily transmitted to the connecting member 20, and position displacement or deflection is prone to occur. In order to solve the above problem, referring to Figures 2 to 8As shown, the present invention provides an ink cartridge 100, comprising an ink storage member 10 and a connecting member 20, wherein:

[0046] The ink reservoir 10 includes a discharge member 11 and an ink bag 12. The ink bag 12 is used to store ink. The discharge member 11 is in communication with the ink bag 12, allowing the ink in the ink bag 12 to enter the ink supply portion 61 through the discharge member 11. The discharge member 11 includes a joint 111, which is projected from the end of the ink bag 12 in the first direction D1. In the installation direction of the ink cartridge 100, the joint 111 is closer to the mounting portion 60 than the ink bag 12.

[0047] The connector 20 is located at the front end of the ink cartridge 100 in the insertion direction. Figure 2 As shown, the connector 20 includes a front end face 22 (the face facing the first direction D1) located on the insertion direction side and an upper end face 23 (the face facing away from the second direction D2) intersecting the front end face 22. The connector 20 also includes an ink outlet 24, which communicates with the ink reservoir 10 and is used to combine with the ink supply portion 61 to supply ink within the ink reservoir 10 to the printer. The ink outlet 24 is provided through the front end face 22 of the connector 20 and is located approximately in the middle of the connector 20 in the third direction D3. The connector 20 also includes a mounting groove 25 that extends through the upper end face 23 and the front end face 22. A chip 26 is disposed within the mounting groove 25 and is located on the +D3 side of the ink outlet 24. The chip 26 is arranged at an angle within the mounting groove 25, with the plane of the chip 26 intersecting both the upper end face 23 and the front end face 22. The edge of the chip 26 in the insertion direction is the front edge, which is also the bottom edge of the chip 26. That is, the front edge of the chip 26 is located in front of the rear edge of the chip 26 (the edge of the chip 26 opposite the insertion direction, also the top edge of the chip 26) in the second direction D2. The front edge of the chip 26 does not protrude beyond the front end surface 22 of the connector 20 in the insertion direction. When the ink cartridge 100 is installed in the mounting portion 60, the chip 26 can contact the electrical connection portion 65 to form an electrical connection.

[0048] Reference Figure 4 As shown, the connecting member 20 includes a receiving groove 21, which is a groove formed by the surface of the connecting member 20 being recessed along the second direction D2. When the ink storage member 10 is connected to the connecting member 20, the joint 111 is at least partially located in the receiving groove 21.

[0049] In the embodiments provided in this application, refer to Figure 5As shown, the joint 111 includes a main body 1111 and an external support member 1112. The external support member 1112 can undergo elastic deformation along a third direction D3. The third direction D3 is the width direction of the ink cartridge 100. The external support member 1112 includes two external support members 1112. The two external support members 1112 are arranged on opposite sides of the main body 1111 along the third direction D3. The external support member 1112 includes a top support portion 11121 and a side support portion 11122. In the third direction D3, one end of the top support portion 11121 is connected to the main body 1111, and the other end is connected to the corresponding side support portion 11122.

[0050] When the engaging portion 111 is at least partially located in the receiving groove 21, Figure 5 As shown, in the opposite direction of the second direction D2, the top support portion 11121 abuts against the wall of the accommodating groove 21, that is, the top support portion 11121 supports the wall of the accommodating groove 21 facing the second direction D2; in the third direction D3, the two side abutting portions 11122 respectively abut against the corresponding side walls of the accommodating groove 21, that is, the opposite side walls of the accommodating groove 21 in the third direction D3 respectively abut against the corresponding side abutting portions 11122, thereby realizing the connection between the ink storage component 10 and the connecting component 20. When the joint 111 is subjected to external force, the external force causes the outer support member 1112 to undergo elastic deformation along the +D3 direction and the -D3 direction, respectively, so that the top support portion 11121 and the side abutment portion 11122 are respectively tightly abutted against the inner wall of the accommodating groove 21 in the opposite direction of the second direction D2 and the two side walls in the third direction D3, thereby transmitting the external force to the accommodating groove 21, improving the connection stability between the joint 111 and the connecting member 20, and effectively preventing the joint 111 from shifting in the second direction D2 and the third direction D3, respectively, thereby effectively preventing the ink storage member 10 from being dislocated and the ink cartridge 100 from disintegrating due to the position shift or deflection of the joint 111.

[0051] After the ink storage member 10 and the connecting member 20 are connected to form the ink cartridge 100, the ink cartridge 100 needs to be turned over and then installed in the supporting member 50. In the second direction D2, the edge of the side abutment portion 11122 is flush with the edge of the connecting member 20. Figure 5 As shown, the bottom of the side abutment 11122 and the bottom of the connecting member 20 are at the same horizontal position. When the ink cartridge 100 is installed in the supporting member 50, the side abutment 11122 and the connecting member 20 can both abut against the bottom wall 55 of the supporting member 50, so that the ink cartridge 100 can be stably installed in the supporting member 50. After the ink cartridge 100 is installed in the mounting portion 60, it can stably supply ink to the printing device.

[0052] The ink cartridge 100 of the present application further includes a first limiting structure 30 and a second limiting structure 40. The first limiting structure 30 is used to limit the relative movement of the joint 111 and the connecting member 20 in the first direction D1, and the second limiting structure 40 is used to limit the relative movement of the joint 111 and the connecting member 20 in the second direction D2. Figures 4 to 8 As shown, the first limiting structure 30 includes a positioning column 31 and a positioning sleeve 32. The positioning column 31 and the positioning sleeve 32 are coaxially arranged. The extension direction of the positioning column 31 is perpendicular to the installation direction of the ink cartridge 100. The positioning sleeve 32 can be sleeved on the positioning column 31 to form a limiting fit. When the positioning column 31 is arranged in the accommodating groove 21, the positioning sleeve 32 is arranged in the joint 111. When the positioning column 31 is arranged in the joint 111, the positioning sleeve 32 is arranged in the accommodating groove 21. When the joint 111 is at least partially located in the accommodating groove 21, the positioning column 31 and the positioning sleeve 32 are sleeved to form a limiting fit to limit the relative movement of the joint 111 and the connecting member 20 in the first direction D1; when the connecting member 111 needs to be separated from the connecting member 20, the limiting fit can be released by removing the positioning sleeve 32 from the positioning column 31.

[0053] In a feasible embodiment, the positioning column 31 and the positioning sleeve 32 each include two, the two positioning columns 31 are arranged in the accommodating groove 21, the positioning column 31 extends from the bottom wall of the accommodating groove 21 along the second direction D2, the two positioning columns 31 are arranged on opposite sides of the main body 1111 along the third direction D3, the main body 1111 includes a tube member 11111 and a plate member 11112, the plate member 11112 includes two, the two plate members 11112 are arranged on opposite sides of the tube member 11111 along the third direction D3, the two positioning sleeves 32 are respectively arranged on the two plate members 11112, and the positions of the two positioning columns 31 in the accommodating groove 21 correspond to the two positioning sleeves 32. When connecting the connector 20 to the ink reservoir 10, the main body 1111 must be placed within the accommodating groove 21, so that the positioning sleeves 32 on the two plate members 11112 fit over the corresponding positioning posts 31. This allows the positioning posts 31 and the corresponding positioning sleeves 32 to form a limited engagement, thereby restricting relative movement of the joint 111 and the connector 20 in the first direction D1. The tube member 11111 also defines a discharge channel 11114, which communicates with the ink bag 12. When the ink cartridge 100 is installed in the mounting portion 60, ink in the ink bag 12 can flow through the discharge channel 11114 into the ink supply portion 61.

[0054] Furthermore, in order to prevent the pipe member 11111 from shifting or deflecting in the third direction D3, Figure 4 as well as Figure 7As shown, the tube member 11111 includes a positioning protrusion 11113, which is located on a side of the tube member 11111 near the receiving groove 21. The positioning protrusion 11113 is a protrusion located on the side of the tube member 11111 opposite the second direction D2 and extending along the first direction D1. A rotation stop 211 is provided within the receiving groove 21. The rotation stop 211 is a ridge extending along the first direction D1. The rotation stop 211 abuts against opposite sides of the positioning protrusion 11113 in the third direction D3. When the positioning sleeves 32 on both sides of the tube member 11111 are sleeved onto the positioning posts 31, the positioning protrusions 11113 extend into the rotation stop 211. The positioning protrusions 11113 abut against opposite side walls of the rotation stop 211 in the third direction D3, thereby preventing the tube member 11111 from shifting or deflecting in the third direction D3.

[0055] Since the mechanical properties of the material of the joint portion 111 are worse than those of the material of the connector 20, when the joint portion 111 is connected to the connector 20, the joint portion 111 is more likely to break and deform relative to the connector 20. In order to improve the strength of the joint portion 111, in the embodiment provided in this application, Figure 7 As shown, the outer support member 1112 also includes a reinforcing rib 11123, which is connected to the top support portion 11121. Since the outer support member 1112 includes two, the two top support portions 11121 each have a reinforcing rib 11123 connected thereto. The two reinforcing ribs 11123 are arranged on opposite sides of the tube member 11111 along the third direction D3, and are respectively located on opposite sides of the second direction D2 of the corresponding plate member 11112, so as to respectively reinforce the corresponding top support portions 11121, thereby improving the strength of the joint 111.

[0056] Reference Figures 4 to 7 As shown, in the embodiment provided by the present application, the second limiting structure 40 includes a first protrusion 41 and a second protrusion 42, and the first protrusion 41 includes two. The two first protrusions 41 are arranged on the opposite side walls of the accommodating groove 21 in the third direction D3. Each first protrusion 41 can be abutted against the corresponding side abutment 11122. When the joint 111 is subjected to external force, the external force can be transmitted to the first protrusion 41 through the side abutment 11122. The first protrusion 41 can provide support to the side abutment 11122 in the third direction D3 to overcome the action of the external force on the side abutment 11122, thereby avoiding the side abutment 11122 from offsetting in the third direction D3.

[0057] The second protrusions 42 include two, and the two second protrusions 42 are respectively arranged on one side of the side abutment portion 11122 facing the corresponding first protrusion 41, and the first protrusion 41 is arranged on the second direction D2 side of the second protrusion 42. Figure 5As shown, the first protrusion 41 is located below the second protrusion 42. In the second direction D2, the projection of the second protrusion 42 at least partially falls on the first protrusion 41, so that the second protrusion 42 can at least partially abut against the first protrusion 41, thereby limiting the relative movement of the joint 111 and the connecting member 20 in the second direction D2.

[0058] Furthermore, both side abutments 11122 extend in a direction inclined relative to the second direction D2, such that the spacing between the ends of the two side abutments 11122 in the +D2 direction is greater than the spacing between the ends of the two side abutments 11122 in the -D2 direction. This ensures that, in the non-installed state, the two side abutments 11122 abut against the corresponding first protrusions 41 in the third direction D3, while the two second protrusions 42 abut against the corresponding first protrusions 41 in the second direction D2. Furthermore, in the installed state, the two side abutments 11122 exhibit a greater deformation than in the non-installed state, resulting in a tighter fit between the lead-out component 11 and the connector 20 in the third direction D3 and further preventing displacement of the joint 111 in the third direction D3.

[0059] Since the ink cartridge 100 of the present application is of an ink bag type structure, as the ink cartridge 100 continuously supplies ink to the ink supply portion 61, based on the structural characteristics of the ink bag type ink cartridge, the ink bag 12 will collapse irregularly as the amount of ink decreases, thereby forming a dead zone that is not connected to the outlet channel 11114, so that the ink cannot flow out smoothly from the outlet channel. Figures 6 to 8 As shown, the outlet component 11 also includes an internal support member 13, and the internal support member 13 includes a base plate 131 and a main support rib 132. The base plate 131 extends along the first direction D1, and the main support ribs 132 are provided on the second direction D2 side of the base plate 131 and the opposite direction side of the second direction D2. The main support ribs 132 extend along the first direction D1. The base plate 131 and the main support ribs 132 on both sides jointly support a channel for extracting ink inside the ink bag 12. As the ink in the ink bag 12 gradually decreases, the ink in the ink bag 12 can still be smoothly extracted, thereby effectively reducing the dead zone caused by the irregular collapse of the ink bag 12, so that the outlet channel 11114 is always in a flowing state.

[0060] In a feasible embodiment, a plurality of inner supporting protrusions 133 are provided at intervals on the substrate 131 and the main support ribs 132. As the ink is continuously discharged, in a low ink volume state, the plurality of inner supporting protrusions 133 gradually approach the two pieces of membrane materials constituting the ink bag 12 until they are against each other. During this process, the inner supporting member 13 can always open the inside of the ink bag 12, so that in a low ink volume state, that is, when the two pieces of membrane materials constituting the ink bag 12 are close to the edges of the substrate 131, the main support ribs 132 and the plurality of inner supporting protrusions 133, the ink in the ink bag 12 can still be discharged by the discharge component 11 through the channel formed by the gaps between the plurality of inner supporting protrusions 133 spaced apart on the inner supporting member 13.

[0061] Preferably, the inner supporting convex portion 133 includes a rear convex portion 1331 and a front convex portion 1332, the rear convex portion 1331 is provided on the opposite side of the substrate 131 in the first direction D1, the front convex portion 1332 is provided on the substrate 131 and / or the main support rib 132, and the front convex portion 1332 is provided on the first direction D1 side of the rear convex portion 1331. Figures 6 to 8 As shown, the rear convex portion 1331 is provided on the right side of the substrate 131 in the figure, that is, the end of the substrate 131 away from the joint 111, and the substrate 131 and the main support rib 132 are both provided with a front convex portion 1332, and the front convex portion 1332 includes a plurality of front convex portions 1332, which are spaced apart along the substrate 131 and the main support rib 132. In the second direction D2, the size of the front convex portion 1332 is smaller than the size of the rear convex portion 1331, that is, the height of the front convex portion 1332 is smaller than the height of the rear convex portion 1331, and the plurality of front convex portions 1332 are spaced apart along the substrate 131 and the main support rib 132. The main body of the ink bag 12 is propped up, and the rear convex portion 1331 is used to prop open the rear end of the ink bag 12. Since the ink at the rear end of the ink bag 12 is farthest from the joint 111, when the amount of ink in the ink bag 12 is low, the ink at the rear end of the ink bag 12 is difficult to flow out smoothly from the outlet channel 11114. Therefore, a larger rear convex portion 1331 is used to prop open the rear end of the ink bag 12 to a greater extent, thereby allowing the ink at the rear end of the ink bag 12 to flow out smoothly, thereby allowing the ink cartridge 100 to continuously and efficiently supply ink to the printing device.

[0062] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. An ink cartridge, characterized in that: include: an ink storage member, the ink storage member including a guide member and an ink bag, the guide member being in communication with the ink bag, the guide member including a joint portion, the joint portion being protruding from a first direction end of the ink bag, the first direction being an installation direction of the ink cartridge; a connecting member, the connecting member including a receiving groove, the receiving groove being formed by a surface of the connecting member being recessed in a direction opposite to a second direction, the second direction being a plumb bob direction, the engaging portion being at least partially located in the receiving groove; in: The joint portion includes a main body and two outer supporting members, wherein the outer supporting members are elastically deformable along a third direction, the third direction being orthogonal to the first direction and the second direction, and the two outer supporting members are arranged on opposite sides of the main body along the third direction; The outer support member includes a top support portion and a side support portion, wherein in the third direction, one end of the top support portion is connected to the main body portion, and the other end of the top support portion is connected to the side support portion; When the ink cartridge is in an installed state, the supporting portion abuts against a wall surface of the accommodating groove in a direction opposite to the second direction; In the third direction, the side abutment portion abuts against the corresponding side wall of the accommodating groove; In the second direction, the edge of the side support portion is flush with the edge of the connecting member.

2. The ink cartridge according to claim 1, wherein The ink cartridge also includes a first limiting structure and a second limiting structure, wherein the first limiting structure is used to limit the relative movement of the joint and the connecting member in the first direction, and the second limiting structure is used to limit the relative movement of the joint and the connecting member in the second direction.

3. The ink cartridge according to claim 2, wherein: The first limiting structure includes a positioning column and a positioning sleeve. The positioning column and the positioning sleeve are coaxially arranged. The extension direction of the positioning column is perpendicular to the first direction. When the joint is at least partially located in the accommodating groove, the positioning column and the positioning sleeve form a limiting fit.

4. The ink cartridge according to claim 3, wherein The main body includes a tube member and two plate members, the two plate members are arranged on opposite sides of the tube member along the third direction, and a guide channel is provided in the tube member, the guide channel is communicated with the ink bag; The positioning column is arranged in the accommodating groove, and the positioning sleeve is arranged on the plate component through.

5. The ink cartridge according to claim 4, wherein: The tube member includes a positioning protrusion, which is protruding from one side of the tube member close to the accommodating groove. A rotation-stopping portion is protruding in the accommodating groove, and the rotation-stopping portion abuts against two opposite sides of the positioning protrusion in the third direction.

6. The ink cartridge according to claim 4, wherein: The outer support member further includes a reinforcing rib connected to the top support portion. The reinforcing rib is arranged on the side of the plate member opposite to the second direction, and two reinforcing ribs are arranged on opposite sides of the tube member along the third direction.

7. The ink cartridge according to claim 2, wherein: The second limiting structure includes a first protrusion and a second protrusion, the first protrusion is arranged on the opposite side walls of the accommodating groove in the third direction, the first protrusion can abut against the corresponding side abutment, the second protrusion is arranged on the side of the side abutment facing the corresponding first protrusion, the first protrusion is arranged on the second direction side of the second protrusion, and in the second direction, the projection of the second protrusion at least partially falls on the first protrusion.

8. The ink cartridge according to claim 1, wherein The guide component also includes an internal support component, which includes a base plate and a main support rib. The base plate extends along the first direction, and the main support ribs are provided on the second direction side and the opposite direction side of the second direction of the base plate. The main support ribs extend along the first direction, and a plurality of internal support protrusions are provided on the base plate and the main support ribs at intervals.

9. The ink cartridge according to claim 8, wherein The inner supporting convex portion includes a rear convex portion, and the rear convex portion is arranged at one end of the base plate in the opposite direction of the first direction.

10. The ink cartridge according to claim 9, wherein The inner supporting protrusion also includes a front protrusion, which is arranged on the base plate and / or the main support rib, and the front protrusion is arranged on the first direction side of the rear protrusion. In the second direction, the size of the front protrusion is smaller than the size of the rear protrusion.

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