ink cartridge

Abstract

The present invention provides an ink cartridge, which relates to the field of inkjet printing technology. The ink cartridge that can be detachably installed on the installation part of the printer includes a front end portion located at the front end of the installation direction, and the front end portion is provided with a mounting groove at the intersection of the upper end face and the front end face; the limiting member includes a limiting arm, and the side of the limiting arm close to the front end face in the installation direction is a cut-off surface, and the limiting member also includes an extension portion provided on the cut-off surface; the projection of the extension portion in the direction opposite to the installation direction does not exceed the side of the corresponding cut-off surface close to the mounting groove in the width direction of the ink cartridge. By introducing the extension portion at the end of the limiting arm of the limiting member, the upward tilt of the stylus holder can be effectively suppressed without increasing the risk of interference between the limiting member and the stylus holder in the width direction of the ink cartridge during the installation of the ink cartridge, thereby allowing the chip and the stylus holder to be properly engaged.

Description

Technical Field

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

[0002] Printers are increasingly used in people's lives and work. As one of the consumables of printers, ink cartridges are also indispensable in people's lives and work.

[0003] In the related art, there is a type of large-capacity ink cartridge that adopts a linear insertion installation. The front end of the large-capacity ink cartridge is provided with a front end portion that cooperates with the printer's mounting portion. A chip is arranged at an angle on the front end portion. The stylus holder on the printer's mounting portion is also arranged at an angle. Two limiting members are provided above the front end portion of the large-capacity ink cartridge. The limiting members include a limiting arm and a supporting arm. The supporting arm connects the limiting arm and the front end portion. The front end of the limiting arm is located at the rear side of the front end portion. The printer's mounting portion includes a stylus holder. The stylus holder is provided with two limited portions. The stylus provided on the stylus holder abuts the chip to complete the transmission of electrical signals between the ink cartridge and the mounting portion. The space enclosed by the limiting arms and the front end portion of the two limiting members, combined with the two limited portions, can limit the stylus holder in the height direction of the ink cartridge, thereby better positioning the chip and allowing the chip to abut the stylus more accurately.

[0004] However, the stylus holder has freedom of movement in a plane perpendicular to the installation direction of the ink cartridge. During the bonding process between the stylus holder and the chip, the stylus holder as a whole will tilt due to the elastic effect of the stylus, and the end of the restricted portion facing the ink cartridge will tilt upward, and the upward tilt amplitude will gradually increase during the bonding process. When the limiting member acts on the restricted portion, the upward tilted end of the restricted portion will easily collide with the front end of the limiting arm, resulting in the chip and the stylus holder being unable to bond correctly. Summary of the Invention

[0005] The present invention provides an ink cartridge to solve the problem that a stylus holder has freedom of movement in a plane perpendicular to the installation direction of the ink cartridge. During the bonding process between the stylus holder and the chip, the stylus holder as a whole will tilt due to the elastic effect of the stylus, and the end of the restricted portion facing the ink will tilt upward, and the upward tilt amplitude will gradually increase during the bonding process. When the limiting member acts on the restricted portion, the upward tilted end of the restricted portion is likely to abut against the front end of the limiting arm, resulting in the problem that the chip and the stylus holder cannot be properly bonded.

[0006] The present invention provides an ink cartridge, comprising a front end portion located at the front end of the installation direction, a chip being provided on the front end portion, the front end portion comprising a front end surface arranged at the front end of the installation direction and an upper end surface intersecting with the front end surface, the front end portion being provided with a mounting groove at the intersection of the upper end surface and the front end surface, the chip being located in the mounting groove, the plane on which the chip is located intersecting with both the upper end surface and the front end surface, two limiting members being provided on the upper end surface, the two limiting members being respectively located on either side of the mounting groove in the width direction of the ink cartridge, the width direction of the ink cartridge being perpendicular to the installation direction and parallel to the upper end surface;

[0007] The limiting member includes a limiting arm, which is located above the upper end surface, and the extension direction of the limiting arm is parallel to the installation direction. The side of the limiting arm close to the front end surface in the installation direction is a cut-off surface, and the limiting member also includes an extension portion provided on the cut-off surface; in the installation direction, one end of the extension portion close to the front end surface is located behind the front end surface, and the projection of the extension portion in the direction opposite to the installation direction does not exceed the side of the corresponding cut-off surface close to the installation groove in the width direction of the ink cartridge.

[0008] Optionally, the limiting member further includes a supporting arm, wherein the supporting arm connects the limiting arm and the upper end surface, and the bottom surface of the extension portion is flush with the bottom surface of the limiting arm.

[0009] Optionally, a projection of a side surface of the extension portion close to the front end surface in a direction opposite to the installation direction is located within the corresponding cut-off surface;

[0010] In the width direction of the ink cartridge, the length of the extension portion is smaller than the length of the limiting arm.

[0011] Optionally, in the width direction of the ink cartridge, the extension portion is located on a side of the corresponding cut-off surface close to the mounting groove.

[0012] Optionally, the side of the extension portion close to the installation groove is a transition surface, the side of the transition surface at the front end of the installation direction is a front side, and the side of the transition surface at the rear end of the installation direction is a rear side. In the width direction of the ink cartridge, the distance between the two front sides is greater than the distance between the two rear sides.

[0013] Optionally, the rear side coincides with a side of the corresponding cut-off surface close to the mounting groove.

[0014] Optionally, the transition surface is perpendicular to the upper end surface.

[0015] Optionally, the upper end surface is recessed to form avoidance portions on both sides of the installation slot along the width direction of the ink cartridge, and the avoidance portions are communicated with the installation slot.

[0016] Optionally, the end face of the avoidance portion in the height direction of the ink cartridge is a avoidance face, the avoidance face is a slope, the avoidance face intersects with the front end face, the side of the avoidance face away from the front end face is located above the side of the avoidance face close to the front end face, and the height direction of the ink cartridge is perpendicular to the upper end face.

[0017] Optionally, a projection of the extension portion in a height direction of the ink cartridge is at least partially located on the avoidance surface, and the height direction of the ink cartridge is perpendicular to the upper end surface.

[0018] The present invention provides an ink cartridge. By introducing an extension portion at the end of a limiting arm of a limiting member, the upward tilt of the stylus holder can be effectively suppressed without increasing the risk of interference between the limiting member and the stylus holder in the width direction of the ink cartridge during the installation of the ink cartridge. The limiting member can limit the stylus holder in the height direction of the ink cartridge, thereby ensuring correct engagement between the chip and the stylus holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a partial structural diagram of the existing installation part;

[0021] Figure 2 for Figure 1 A schematic structural diagram of the stylus holder in FIG.

[0022] Figure 3 A structural diagram of an ink cartridge and a tray in a separated state provided by an embodiment of the present invention;

[0023] Figure 4 for Figure 3 A schematic top view of the ink cartridge;

[0024] Figure 5 for Figure 4 A first-person perspective structural diagram of the front end portion;

[0025] Figure 6 for Figure 4 A second perspective structural diagram of the front end portion;

[0026] Figure 7 for Figure 4 A partial structural diagram of the front end of the .

[0027] Description of reference numerals:

[0028] 50-installation portion; 51-ink supply needle;

[0029] 52-device side terminal portion; 52t-contact needle holder;

[0030] 52g-restricted portion; 53-positioning portion;

[0031] 54-locking portion; 20-tray;

[0032] 20a-first side; 20b-second side;

[0033] 20c-accommodating bottom surface; 20d-opening;

[0034] 20e-first side; 20f-second side;

[0035] 210 - accommodating cavity; 21 - tray positioning portion;

[0036] 100-ink cartridge; 110-front end;

[0037] 111-front end surface; 112-upper end surface;

[0038] 1121-avoidance surface; 113-installation slot;

[0039] 114- ink outlet; 120- chip;

[0040] 130-limiting member; 131-limiting arm;

[0041] 1311-cutoff surface; 132-support arm;

[0042] 133-extension portion; 133a-transition surface;

[0043] 133b-front side; 133c-back side;

[0044] 140-Ink storage unit. DETAILED DESCRIPTION

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0046] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0047] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] In the above description, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without mutual contradiction.

[0050] In the related art, the stylus holder has freedom of movement in a plane perpendicular to the installation direction of the ink cartridge. During the bonding process between the stylus holder and the chip, due to the elastic effect of the stylus, the stylus holder as a whole will tilt, and the end of the restricted portion facing the ink cartridge will tilt upward, and the upward tilt amplitude will gradually increase during the bonding process. When the limiting member acts on the restricted portion, the upward tilted end of the restricted portion will easily come into contact with the front end of the limiting arm, and the limiting member cannot limit the stylus holder in the height direction of the ink cartridge, resulting in the chip and the stylus holder being unable to bond correctly.

[0051] In order to solve the above problems, an embodiment of the present invention provides an ink cartridge, which introduces an extension portion at the end of the limiting arm of the limiting member. When the stylus holder is engaged with the chip, the end of the limited portion facing the ink cartridge is located below the extension portion. The extension portion can effectively suppress the stylus holder from tilting upward, and the limiting member can limit the stylus holder in the height direction of the ink cartridge, so that the chip and the stylus holder can be correctly engaged. Moreover, by the projection of the extension portion in the direction opposite to the installation direction not exceeding the side of the corresponding cut-off surface close to the installation groove in the width direction of the ink cartridge, the extension portion can avoid increasing the risk of interference between the limiting member and the stylus holder in the width direction of the ink cartridge during the installation of the ink cartridge.

[0052] The ink cartridge provided by the embodiment of the present invention is described in detail below with reference to specific embodiments.

[0053] Figure 1 It is a partial structural diagram of the existing installation part; Figure 2 for Figure 1 A schematic structural diagram of the stylus holder in FIG. Figure 3 A structural diagram of an ink cartridge and a tray in a separated state provided by an embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of a top view of the ink cartridge in FIG.

[0054] like Figures 1 to 4 As shown, an embodiment of the present invention provides an ink cartridge 100 that is detachably mounted on a mounting portion 50 of a printer. The ink cartridge 100 is mounted on the mounting portion 50 along a linear mounting direction. The ink cartridge 100 may be an ink bag type ink cartridge or other types of large-capacity ink cartridges. Figure 1 、 Figure 3 and Figure 4 The +Y axis direction is the installation direction.

[0055] The printer further includes a tray 20 . After the ink cartridge 100 is placed on the tray 20 , a combination is formed. The combination is then mounted on the mounting portion 50 along a mounting direction.

[0056] like Figure 1As shown, the mounting portion 50 includes a frame, a device-side terminal portion 52, two positioning portions 53, an ink supply needle 51, and a locking portion 54. The device-side terminal portion 52 includes a stylus holder 52t. The stylus holder 52t is provided with stylus pins for contacting the chip 120 of the ink cartridge 100. The stylus holder 52t has free movement within a plane perpendicular to the direction in which the ink cartridge 100 is mounted.

[0057] like Figure 3 As shown, the tray 20 is basically in the shape of a rectangular parallelepiped with an opening. The tray 20 has a first surface 20a, a second surface 20b, a receiving bottom surface 20c, an opening 20d, a first side surface 20e, and a second side surface 20f. A three-dimensional rectangular coordinate system XYZ is established, with the X-axis, Y-axis, and Z-axis being perpendicular to each other. The direction from the opening 20d toward the receiving bottom surface 20c is the +Z-axis direction, which is also the vertical direction. The direction from the second surface 20b toward the first surface 20a is the +Y-axis direction, which is also the installation direction of the assembly formed by the ink cartridge and tray 20 on the mounting portion 50. The direction from the second side surface 20f toward the first side surface 20e is the +X-axis direction. The first surface 20a is the surface on the front side of the installation direction. When the tray 20 is installed on the mounting portion 50, the coordinate system of the mounting portion 50 is consistent with the coordinate system of the tray 20.

[0058] The tray 20 further comprises a receiving cavity 210, a fixing structure, and a tray positioning portion 21. The receiving cavity 210 is used to accommodate the ink cartridge 100, and two tray positioning portions 21 are provided on the first surface 20a. When the tray 20 is mounted on the mounting portion 50, the tray positioning portions 21 combine with the positioning portion 53 to position the tray 20 approximately perpendicular to the mounting direction. The fixing structure combines with the locking portion 54 to prevent the tray 20 from being removed from the mounting portion 50.

[0059] like Figure 3 and Figure 4 As shown, the coordinate system of the ink cartridge 100 is consistent with the coordinate system of the tray 20 when the ink cartridge 100 is installed in the tray 20. The ink cartridge 100 includes a front end portion 110 located at the front end in the installation direction, and a chip 120 is provided on the front end portion 110. The front end portion 110 includes a front end surface 111 located at the front end in the installation direction and an upper end surface 112 intersecting with the front end surface 111. The front end portion 110 is provided with a mounting groove 113 at the intersection of the upper end surface 112 and the front end surface 111. The chip 120 is located in the mounting groove 113. The plane on which the chip 120 is located intersects with both the upper end surface 112 and the front end surface 111. Two stoppers 130 are provided on the upper end surface 112. In the width direction of the ink cartridge 100, the two stoppers 130 are respectively located on either side of the mounting groove 113.

[0060] like Figure 3As shown, the front end portion 110 further includes an ink outlet 114 and an ink storage portion 140 . The ink outlet 114 is used to be combined with the ink supply needle 51 , and the ink storage portion 140 is used to store ink.

[0061] It should be noted that the width direction of the ink cartridge 100 may be the extension direction of the X-axis. The width direction of the ink cartridge 100 is perpendicular to the installation direction and parallel to the upper end surface 112. The height direction of the ink cartridge 100 may be the extension direction of the Z-axis. The length direction of the ink cartridge 100 may be the extension direction of the Y-axis. The Y-axis is parallel to the upper end surface 112 and perpendicular to the front end surface 111. The X-axis is parallel to both the upper end surface 112 and the front end surface 111.

[0062] Figure 5 for Figure 4 A first-person perspective structural diagram of the front end portion; Figure 6 for Figure 4 A second perspective structural diagram of the front end portion; Figure 7 for Figure 4 A partial structural diagram of the front end of the .

[0063] like Figure 4 、 Figure 5 and Figure 6 As shown, the limiting member 130 includes a limiting arm 131, which is located above the upper end surface 112. The extending direction of the limiting arm 131 is parallel to the installation direction, and the side of the limiting arm 131 close to the front end surface 111 in the installation direction is a cutoff surface 1311.

[0064] The limiting member 130 also includes an extension portion 133 provided on the cut-off surface 1311; in the installation direction, one end of the extension portion 133 close to the front end surface 111 is located behind the front end surface 111, and the projection of the extension portion 133 in the direction opposite to the installation direction does not exceed the side of the corresponding cut-off surface 1311 close to the installation groove 113 in the width direction of the ink cartridge 100.

[0065] The limiting member 130 further includes a supporting arm 132 , which connects the limiting arm 131 and the upper end surface 112 .

[0066] The bottom surface of the extension portion 133 can be flush with the bottom surface of the limiting arm 131. In other embodiments, the bottom surface of the extension portion 133 and the bottom surface of the limiting arm 131 may not be flush. The bottom surface of the extension portion 133 is the surface of the extension portion 133 opposite the upper end surface 112; the bottom surface of the limiting arm 131 is the surface of the limiting arm 131 opposite the upper end surface 112.

[0067] The front end portion 110 limits the stylus holder 52t in the height direction of the ink cartridge 100 through two limiting members 130. Figure 2As shown, a restricted portion 52g is provided on each side of the stylus holder 52t. When the stylus holder 52t engages the chip 120, the end of the restricted portion 52g facing the ink cartridge 100 is located below the extension 133. That is, during the initial upward tilting phase, the restricted portion 52g enters the range of action of the stopper 130 and fits into the gap between the extension 133 and the upper end surface 112. This effectively prevents the stylus holder 52t from tilting upward, and the stopper 130 limits the stylus holder 52t in the height direction of the ink cartridge 100, thereby ensuring proper engagement between the chip 120 and the stylus holder 52t and ensuring a stable electrical connection between the chip 120 and the mounting portion 50. The initial upward tilting phase spans the period from when the stylus holder 52t contacts the chip 120 but has no force acting therebetween to when the stylus holder 52t contacts the chip 120 and has a force acting therebetween.

[0068] When the restricted portion 52 g is inserted between the extension portion 133 and the upper end surface 112 , a gap may be present between the restricted portion 52 g and the extension portion 133 .

[0069] By ensuring that the projection of the extended portion 133 in the direction opposite to the installation direction does not extend beyond the side edge of the corresponding cutoff surface 1311 in the width direction of the ink cartridge 100, which is adjacent to the mounting groove 113, the extended portion 133 can be installed without increasing the risk of interference between the stopper 130 and the stylus holder 52 t in the width direction of the ink cartridge 100. Specifically, by ensuring that the projection of the extended portion 133 in the direction opposite to the installation direction (i.e., the -Y direction) does not extend beyond the side edge of the corresponding cutoff surface 1311 in the width direction of the ink cartridge 100 (i.e., the +X direction), the portion of the stylus holder 52 t between the two restricted portions 52 g in the width direction of the ink cartridge 100 is avoided, thereby preventing an increase in the risk of interference between the front end portion 110 and the stylus holder 52 t in the X direction.

[0070] It should be noted that the upward inclination amplitudes of the two restricted portions 52 g in the height direction of the ink cartridge 100 may be the same or different.

[0071] When the combination formed by the ink cartridge 100 and the tray 20 is installed on the mounting portion 50, the locking portion 54 engages with the fixing structure on the tray 20 to prevent the combination from being separated from the mounting portion 50; the tray positioning portion 21 engages with the positioning portion 53 to position the combination approximately perpendicular to the mounting direction; the ink outlet 114 engages with the ink supply needle 51 to supply ink from the ink cartridge 100 to the mounting portion 50 and provide ink for printing; the stylus provided on the stylus holder 52t on the device-side terminal portion 52 abuts against the chip 120, completing the transmission of electrical signals between the ink cartridge 100 and the mounting portion 50; when the stylus holder 52t engages with the chip 120, the end of the restricted portion 52g facing the ink cartridge 100 is located below the extension portion, and the extension portion 133 effectively prevents the stylus holder 52t from tilting upward. The limiter 130 limits the stylus holder 52t in the height direction of the ink cartridge 100, thereby ensuring proper engagement between the chip 120 and the stylus holder 52t.

[0072] Optionally, the projection of the side surface of the extension portion 133 close to the front end surface 111 in the direction opposite to the installation direction is located within the corresponding cut-off surface 1311, and the area of ​​the side surface of the extension portion 133 in the installation direction of the ink cartridge 100 does not exceed the area of ​​the cut-off surface 1311; in the width direction of the ink cartridge 100, the length of the extension portion 133 is less than the length of the limiting arm 131, that is, the extension portion 133 is narrower than the limiting arm 131, thereby ensuring that the projection of the extension portion 133 in the direction opposite to the installation direction does not exceed the side of the corresponding cut-off surface 1311 close to the installation groove 113 in the width direction of the ink cartridge 100.

[0073] In the width direction of the ink cartridge 100 , the extension portion 133 is located on a side of the corresponding cut-off surface 1311 close to the mounting groove 113 .

[0074] Alternatively, as Figures 5 to 7 As shown, the side of the extension portion 133 close to the installation groove 113 is a transition surface 133a, the side of the transition surface 133a at the front end of the installation direction is a front side 133b, and the side of the transition surface 133a at the rear end of the installation direction is a rear side 133c.

[0075] In the width direction of the ink cartridge 100, the distance between the two front sides 133b of the two extensions 133 is greater than the distance between the two rear sides 133c. This allows the transition surface 133a to extend in an angled direction relative to the installation direction of the ink cartridge 100. Furthermore, the projection of the extension 133 in the direction opposite to the installation direction does not extend beyond the side of the corresponding cutoff surface 1311 adjacent to the installation slot 113 in the width direction of the ink cartridge 100. This arrangement facilitates the two extensions 133 to avoid the portion of the stylus holder 52t located between the two restricted portions 52g in the width direction of the ink cartridge 100.

[0076] In an optional embodiment, the rear side 133 c may overlap with the side of the corresponding cut-off surface 1311 close to the mounting groove 113 .

[0077] Alternatively, the transition surface 133a may be perpendicular to the upper end surface 112. This arrangement allows the transition surfaces 133a of the two extensions 133 to be positioned at the same point in the installation direction of the ink cartridge 100 at the same distance in the width direction of the ink cartridge 100, thereby facilitating the avoidance of the portion of the stylus holder 52t between the two restricted portions 52g in the width direction of the ink cartridge 100.

[0078] Alternatively, as Figure 5 As shown, the upper end surface 112 is recessed to form avoidance portions on both sides of the installation groove 113 along the width direction of the ink cartridge 100 , and the avoidance portions are connected to the installation groove 113 .

[0079] The escape portion can escape the upwardly inclined restricted portion 52g. The escape portion can be an escape groove. The end surface of the escape portion in the height direction of the ink cartridge is an escape surface 1121, and the escape surface 1121 is arranged close to the front end surface 111.

[0080] The avoidance surface 1121 may be an inclined surface, intersecting the front end surface 111, with the side of the avoidance surface 1121 away from the front end surface 111 being located above the side of the avoidance surface 1121 close to the front end surface 111. With this arrangement, during the initial upward inclination of the restricted portion 52g, the avoidance surface avoids the restricted portion 52g, thereby effectively preventing the restricted portion 52g from further upward inclination.

[0081] The projection of the extension portion 133 in the height direction of the ink cartridge 100 is at least partially located on the relief surface 1121. The height direction of the ink cartridge 100 is perpendicular to the upper end surface 112. This arrangement allows the relief portion to avoid the restricted portion 52g during the initial stage of the stopper 130 limiting the stylus holder 52t, thereby ensuring proper engagement between the chip 120 and the stylus holder 52t.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ink cartridge detachably mounted on a mounting portion of a printer, wherein the ink cartridge is mounted on the mounting portion along a linear mounting direction, characterized in that: The ink cartridge includes a front end portion located at the front end of the installation direction, a chip is provided on the front end portion, the front end portion includes a front end surface arranged at the front end of the installation direction and an upper end surface intersecting with the front end surface, the front end portion is provided with a mounting groove at the intersection of the upper end surface and the front end surface, the chip is located in the mounting groove, the plane where the chip is located intersects with both the upper end surface and the front end surface, two limiting members are provided on the upper end surface, and in the width direction of the ink cartridge, the two limiting members are respectively located on both sides of the mounting groove, and the width direction of the ink cartridge is perpendicular to the installation direction and parallel to the upper end surface; The limiting member includes a limiting arm, the limiting arm is located above the upper end surface, the extending direction of the limiting arm is parallel to the installation direction, the side of the limiting arm close to the front end surface in the installation direction is a cut-off surface, and the limiting member also includes an extension portion provided on the cut-off surface; in the installation direction, one end of the extension portion close to the front end surface is located behind the front end surface, and a projection of the extension portion in a direction opposite to the installation direction does not exceed the side of the corresponding cut-off surface close to the installation groove in the width direction of the ink cartridge; The projection of the side surface of the extension portion close to the front end surface in the direction opposite to the installation direction is located within the corresponding cut-off surface; in the width direction of the ink cartridge, the extension portion is located on the side of the corresponding cut-off surface close to the installation groove.

2. The ink cartridge according to claim 1, wherein The limiting member further includes a supporting arm, which connects the limiting arm and the upper end surface, and the bottom surface of the extension portion is flush with the bottom surface of the limiting arm.

3. The ink cartridge according to claim 1, wherein In the width direction of the ink cartridge, the length of the extension portion is smaller than the length of the limiting arm.

4. The ink cartridge according to claim 1, wherein The side of the extension portion close to the installation groove is a transition surface, the side of the transition surface at the front end of the installation direction is a front side, and the side of the transition surface at the rear end of the installation direction is a rear side. In the width direction of the ink cartridge, the distance between the two front sides is greater than the distance between the two rear sides.

5. The ink cartridge according to claim 4, wherein: The rear side coincides with the side of the corresponding cut-off surface close to the mounting groove.

6. The ink cartridge according to claim 4, wherein: The transition surface is perpendicular to the upper end surface.

7. The ink cartridge according to any one of claims 1 to 6, characterized in that: The upper end surface is recessed at both sides of the installation groove along the width direction of the ink cartridge to form avoidance portions, and the avoidance portions are communicated with the installation groove.

8. The ink cartridge according to claim 7, wherein: The end face of the avoidance portion in the height direction of the ink cartridge is a avoidance face, the avoidance face is an inclined face, the avoidance face intersects with the front end face, the side of the avoidance face away from the front end face is located above the side of the avoidance face close to the front end face, and the height direction of the ink cartridge is perpendicular to the upper end face.

9. The ink cartridge according to claim 8, wherein The projection of the extension portion in the height direction of the ink cartridge is at least partially located on the avoidance surface.

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