CN115871340A

CN115871340A - Ink box

Info

Publication number: CN115871340A
Application number: CN202310089847.0A
Authority: CN
Inventors: 梁仕超; 夏敬章; 曾惠栋
Original assignee: Zhuhai Ninestar Management Co Ltd
Current assignee: Zhuhai Ninestar Management Co Ltd
Priority date: 2022-07-26
Filing date: 2023-01-18
Publication date: 2023-03-31
Also published as: JP2024016843A; JP7490121B2; CN219256819U

Abstract

The invention provides an ink box, and relates to the technical field of ink-jet printing. The ink box detachably mounted on the mounting part of the printer comprises a front end part positioned at the front end in the mounting direction, and the front end part is provided with a mounting groove at the intersection of the upper end surface and the front end surface; the limiting piece comprises a limiting arm, the side surface of the limiting arm, which is close to the front end surface in the mounting direction, is a stop surface, and the limiting piece also comprises an extension part arranged on the stop surface; the projection of the extension part in the direction opposite to the mounting direction does not exceed the corresponding cut-off surface and is close to the side edge of the mounting groove in the width direction of the ink box. The end part of the limiting arm of the limiting part is introduced into the extension part, so that the upward inclination of the contact pin holder can be effectively inhibited on the premise that the risk of interference between the limiting part and the contact pin holder in the width direction of the ink box is not increased in the installation process of the ink box, and the chip and the contact pin holder can be correctly jointed.

Description

Ink box

Technical Field

The invention relates to the technical field of ink-jet printing, in particular to an ink box.

Background

Printers are becoming more and more widely used in people's lives and jobs. Ink cartridges are also essential in people's life and work as one of the consumables of printers.

In the related art, a large-capacity ink cartridge adopting linear insertion type installation is provided, a front end portion matched with an installation portion of a printer is arranged at the front end of an installation direction, a chip is arranged on the front end portion in an inclined mode, a contact needle frame on the installation portion of the printer is correspondingly arranged in an inclined mode, two limiting parts are arranged above the front end portion of the large-capacity ink cartridge and comprise a limiting arm and a supporting arm, the supporting arm is connected with the limiting arm and the front end portion, and the front end of the limiting arm is located on the rear side of the front end portion. The mounting part of the printer comprises a contact pin frame, the contact pin frame is provided with two limited parts, and contact pins arranged on the contact pin frame are abutted with the chip to complete the transmission work of electric signals between the ink box and the mounting part; the spacing arm of two locating parts and the space that the front end portion encloses combine with two by limiting part, can carry on spacingly to the contact pin frame on the direction of height of ink horn to the position of better location chip lets the more accurate and contact pin looks butt of chip.

However, the stylus holder has a freedom of movement in a plane perpendicular to the mounting direction of the ink cartridge, and during the process of jointing the stylus holder and the chip, the whole stylus holder can tilt due to the elastic action of the stylus, the limited portion can tilt up towards one end of the ink cartridge, and the tilting amplitude can gradually increase during the jointing process, and when the limiting member and the limited portion act, the tilted end of the limited portion easily butts against the front end of the limiting arm, so that the chip and the stylus holder cannot be jointed correctly.

Disclosure of Invention

The invention provides an ink box, which aims to solve the problems that a contact pin frame has a movable degree of freedom in a plane perpendicular to the installation direction of the ink box, the whole contact pin frame can incline due to the elastic action of a contact pin in the process of jointing the contact pin frame and a chip, one end of a limited part facing ink can incline upwards, the ascending amplitude can be gradually increased in the jointing process, and when a limiting part acts on the limited part, the inclined end of the limited part is easy to abut against the front end of a limiting arm, so that the chip and the contact pin frame cannot be correctly jointed.

The invention provides an ink box, which comprises a front end part positioned at the front end in the mounting direction, wherein a chip is arranged on the front end part, the front end part comprises a front end surface arranged at the front end in the mounting direction and an upper end surface intersected with the front end surface, a mounting groove is arranged at the intersection of the upper end surface and the front end surface of the front end part, the chip is positioned in the mounting groove, the plane where the chip is positioned is intersected with both the upper end surface and the front end surface, two limiting parts are arranged on the upper end surface, the two limiting parts are respectively positioned at two sides of the mounting groove in the width direction of the ink box, and the width direction of the ink box is perpendicular to the mounting direction and parallel to the upper end surface;

the limiting part comprises a limiting arm, the limiting arm is positioned above the upper end face, the extending direction of the limiting arm is parallel to the mounting direction, the side face, close to the front end face, of the limiting arm in the mounting direction is a stop face, and the limiting part further comprises an extending part arranged on the stop face; in the mounting direction, one end, close to the front end face, of the extending portion is located behind the front end face, and the projection of the extending portion in the direction opposite to the mounting direction does not exceed the side edge, close to the mounting groove, of the corresponding cut-off surface in the width direction of the ink cartridge.

Optionally, the limiting member further includes a supporting arm, the supporting arm is connected to the limiting arm and the upper end surface, and a bottom surface of the outer extending portion is flush with a bottom surface of the limiting arm.

Optionally, projections of side surfaces of the extending portions close to the front end surface in a direction opposite to the mounting direction are located in the corresponding cut-off surfaces;

in the width direction of the ink box, the length of the extending part is smaller than that of the limiting arm.

Optionally, in the width direction of the ink cartridge, the outward extending portion is located on one side of the corresponding cut-off surface close to the mounting groove.

Optionally, the side that the epitaxial portion is close to the mounting groove is the transition face, the transition face is in the side of the front end of installation direction is the front side, the transition face is in the side of the rear end of installation direction is the rear side in the width direction of ink horn, two the interval of front side is greater than two the interval of rear side.

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

Optionally, the transition surface is perpendicular to the upper end surface.

Optionally, the upper end surface is provided with an avoiding portion in a concave manner on two sides of the mounting groove in the width direction of the ink cartridge, and the avoiding portion is communicated with the mounting groove.

Optionally, an end face of the avoiding portion in the height direction of the ink cartridge is an avoiding face, the avoiding face is an inclined face, the avoiding face intersects with the front end face, a side edge of the avoiding face far away from one side of the front end face is located above a side edge of the avoiding face close to one side of the front end face, and the height direction of the ink cartridge is perpendicular to the upper end face.

Optionally, a projection of the extending portion in a height direction of the ink cartridge is at least partially located on the avoiding surface, and the height direction of the ink cartridge is perpendicular to the upper end surface.

The invention provides an ink box, which can effectively inhibit the upward inclination of a contact pin holder on the premise of not increasing the risk of interference between a limiting piece and the contact pin holder in the width direction of the ink box in the installation process of the ink box by introducing an extension part into the end part of a limiting arm of the limiting piece, and the limiting piece can limit the contact pin holder in the height direction of the ink box, so that a chip can be correctly jointed with the contact pin holder.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings without inventive labor.

FIG. 1 is a partial view of a conventional mounting part;

FIG. 2 is a schematic view of the structure of the stylus holder of FIG. 1;

FIG. 3 is a structural view illustrating a state where an ink cartridge and a tray are separated according to an embodiment of the present invention;

FIG. 4 is a schematic top view of the ink cartridge of FIG. 3;

FIG. 5 is a first perspective view of the front end portion of FIG. 4;

FIG. 6 is a second perspective view of the front end portion of FIG. 4;

fig. 7 is a partial configuration view of the tip end portion in fig. 4.

Description of reference numerals:

50-a mounting portion; 51-ink supply needle;

52-device side terminal portion; 52 t-stylus holder;

52 g-a restricted portion; 53-a positioning section;

54-a locking portion; 20-a tray;

20 a-a first side; 20 b-a second face;

20 c-a receiving bottom surface; 20 d-opening;

20 e-the first side; 20 f-second side;

210-a receiving cavity; 21-a tray positioning section;

100-ink cartridge; 110-a front end;

111-front end face; 112-upper end face;

1121-avoidance plane; 113-a mounting groove;

114-an ink outlet; 120-chip;

130-a limit piece; 131-a spacing arm;

1311-stop face; 132-a support arm;

133-an extension; 133 a-a transition surface;

133 b-anterior lateral edge; 133 c-rear side;

140-ink storage.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the related art, the contact pin frame has a degree of freedom of movement in a plane perpendicular to the mounting direction of the ink cartridge, in the process of jointing the contact pin frame and the chip, due to the elastic action of the contact pin, the whole contact pin frame can incline, one end of the limited part facing the ink cartridge can incline upwards, the ascending amplitude can gradually increase in the jointing process, when the limiting part is acted with the limited part, the inclined end of the limited part is easy to abut against the front end of the limiting arm, the limiting part cannot limit the height direction of the ink cartridge, and the chip and the contact pin frame cannot be correctly jointed.

In order to solve the above problem, an embodiment of the present invention provides an ink cartridge, in which an extending portion is introduced into an end portion of a limit arm of a limit member, when a contact pin holder is engaged with a chip, one end of a limited portion facing the ink cartridge is located below the extending portion, the extending portion can effectively suppress the upward tilting of the contact pin holder, the limit member can limit the contact pin holder in a height direction of the ink cartridge, so that the chip and the contact pin holder can be properly engaged, and the extending portion can be mounted on the ink cartridge without increasing a risk of interference between the limit member and the contact pin holder in a width direction of the ink cartridge by a projection of the extending portion in a direction opposite to a mounting direction not exceeding a corresponding cut-off surface near a side of a mounting groove in the width direction of the ink cartridge.

The ink cartridge provided in the embodiment of the present invention will be described in detail with reference to specific examples.

FIG. 1 is a partial view of a conventional mounting part; FIG. 2 is a schematic view of the structure of the stylus holder of FIG. 1; FIG. 3 is a structural view illustrating a separated state of an ink cartridge and a tray provided in an embodiment of the present invention; fig. 4 is a schematic top view of the ink cartridge of fig. 3.

As shown in fig. 1 to 4, an embodiment of the present invention provides an ink cartridge 100 detachably mounted to a mounting portion 50 of a printer, the ink cartridge 100 being mounted to the mounting portion 50 in a linear mounting direction. The ink cartridge 100 may be an ink bag type ink cartridge, or may be another type of large capacity ink cartridge. The + Y axis direction in fig. 1, 3, and 4 is the mounting direction.

The printer further includes a tray 20, and the ink cartridge 100 is placed on the tray 20 to form a combined body, which is mounted to the mounting portion 50 in the mounting direction.

As shown in fig. 1, the mounting portion 50 includes a frame, a device-side terminal portion 52, two positioning portions 53, an ink supply needle 51, and a lock portion 54. The device-side terminal portion 52 includes a contact pin holder 52t, and contact pins provided on the contact pin holder 52t are for contact with the chip 120 of the ink cartridge 100. The stylus holder 52t has a degree of freedom of movement in a plane perpendicular to the mounting direction of the ink cartridge 100.

As shown in fig. 3, the tray 20 has a substantially rectangular parallelepiped shape having an opening, and the tray 20 has a first face 20a, a second face 20b, a housing bottom face 20c, an opening 20d, a first side face 20e, and a second side face 20f. And a three-position rectangular coordinate system XYZ is set, and three coordinate axes of an X axis, a Y axis and a Z axis are mutually vertical. The direction of the opening 20d toward the accommodation bottom surface 20c is the + Z-axis direction, which is also the vertical direction. The direction in which the second surface 20b is directed toward the first surface 20a is the + Y-axis direction, which is also the mounting direction of the combined body of the ink cartridge and the tray 20 to the mounting portion 50. The direction in which the second side surface 20f points toward the first side surface 20e is the + X-axis direction. The first surface 20a is a surface on the front end side in the mounting direction. The coordinate system of the mounting portion 50 coincides with the coordinate system of the tray 20 in a state where the tray 20 is mounted on the mounting portion 50.

The tray 20 further has a housing chamber 210 for housing the ink cartridge 100, a fixing structure, and tray positioning portions 21, two tray positioning portions 21 being provided on the first face 20 a. When the tray 20 is mounted to the mounting portion 50, the tray positioning portions 21 are combined with the positioning portions 53 to position the tray 20 substantially in the direction perpendicular to the mounting direction, and the fixing structure is combined with the locking portions 54 to prevent the tray 20 from coming off the mounting portion 50.

As shown in fig. 3 and 4, the coordinate system of the ink cartridge 100 coincides with the coordinate system of the tray 20 in a state where the ink cartridge 100 is mounted to the tray 20. The ink cartridge 100 comprises a front end portion 110 located at the front end of the mounting direction, a chip 120 is arranged on the front end portion 110, the front end portion 110 comprises a front end surface 111 arranged at the front end of the mounting direction and an upper end surface 112 intersected 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 where the chip 120 is located is intersected with both the upper end surface 112 and the front end surface 111, two limiting pieces 130 are arranged on the upper end surface 112, and in the width direction of the ink cartridge 100, the two limiting pieces 130 are respectively located on two sides of the mounting groove 113.

As shown in fig. 3, 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 coupled to the ink supply needle 51, and the ink storage portion 140 is used to store ink.

The width direction of the ink cartridge 100 may be an extending direction of an X axis, the width direction of the ink cartridge 100 may be perpendicular to the mounting direction and parallel to the upper end surface 112, the height direction of the ink cartridge 100 may be an extending direction of a Z axis, and the length direction of the ink cartridge 100 may be an extending direction of a Y axis. The Y-axis is parallel to the upper end surface 112 and perpendicular to the front end surface 111, and the x-axis is parallel to both the upper end surface 112 and the front end surface 111.

Fig. 5 is a first perspective view of the front end portion of fig. 4; FIG. 6 is a second perspective view of the front end portion of FIG. 4; fig. 7 is a partial configuration view of the tip end portion in fig. 4.

As shown in fig. 4, 5, and 6, the limiting member 130 includes a limiting arm 131, the limiting arm 131 is located above the upper end surface 112, the extending direction of the limiting arm 131 is parallel to the mounting direction, and a side surface of the limiting arm 131 close to the front end surface 111 in the mounting direction is a stop surface 1311.

The limiting member 130 further includes an extension 133 disposed on the stop surface 1311; in the mounting direction, one end of the extending portion 133 close to the front end surface 111 is located behind the front end surface 111, and a projection of the extending portion 133 in a direction opposite to the mounting direction does not exceed the corresponding cut-off surface 1311 in a direction close to a side of the mounting groove 113 in the width direction of the ink cartridge 100.

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

The bottom surface of the extension 133 may be flush with the bottom surface of the retainer arm 131. In other embodiments, the bottom surface of the extension 133 and the bottom surface of the stopper arm 131 may not be flush. The bottom surface of the extension portion 133 is a surface of the extension portion 133 opposite to the upper end surface 112; the bottom surface of the stopper arm 131 is a surface of the stopper arm 131 opposite to the upper end surface 112.

The front end portion 110 restricts the height direction of the ink cartridge 100 of the stylus holder 52t by two stoppers 130. Specifically, as shown in fig. 2, one restricted portion 52g is provided on each of both sides of the contact pin holder 52t, and when the contact pin holder 52t is engaged with the chip 120, the restricted portion 52g is located below the extension portion 133 toward one end of the ink cartridge 100, that is, the restricted portion 52g enters the action range of the stopper 130 in the initial stage of the tilt-up and is inserted into the gap between the extension portion 133 and the upper end surface 112, so that the extension portion 133 can effectively suppress the tilt-up of the contact pin holder 52t, and the stopper 130 can limit the contact pin holder 52t in the height direction of the ink cartridge 100, so that the chip 120 can be properly engaged with the contact pin holder 52t, and the electrical connection stability between the chip 120 and the mounting portion 50 can be ensured. The initial period of tilt-up is the period of time between when the stylus holder 52t is in contact with the chip 120 but there is no force between the two until the stylus holder 52t is in contact with the chip 120 and there is a force between the two.

When the restricted portion 52g is inserted between the extended portion 133 and the upper end surface 112, a gap may be provided between the restricted portion 52g and the extended portion 133.

By the projection of the extension 133 in the direction opposite to the mounting direction not exceeding the corresponding cut-off surface 1311 near the side of the mounting groove 113 in the width direction of the ink cartridge 100, it is possible to enable the extension 133 to mount the ink cartridge 100 without increasing the risk of interference between the stopper 130 and the stylus holder 52t in the width direction of the ink cartridge 100. Specifically, by the projection of the extension 133 in the direction opposite to the mounting direction (i.e., -Y direction) not exceeding the side of the corresponding cut-off surface 1311 near the mounting groove 113 in the width direction of the ink cartridge 100 (i.e., + X direction), the portion of the stylus holder 52t between the two restricted portions 52g can be configured to recede in the width direction of the ink cartridge 100, so that the risk of interference between the tip portion 110 and the stylus holder 52t in the X direction does not increase.

The two restricted portions 52g may have the same or different inclination widths in the height direction of the ink cartridge 100.

When the combined body of the ink cartridge 100 and the tray 20 is mounted on the mounting portion 50, the locking portion 54 is engaged with the fixing structure of the tray 20 to prevent the combined body from being separated from the mounting portion 50; the tray positioning portion 21 is combined with the positioning portion 53 to position the approximate position of the combined body in the direction perpendicular to the mounting direction; the ink outlet 114 is combined with the ink supply needle 51, and can supply ink in the ink box 100 to the mounting part 50 and supply ink for printing; the contact pins provided on the contact pin holder 52t of the device-side terminal portion 52 are in contact with the chip 120, and the transmission of the electrical signal between the ink cartridge 100 and the mounting portion 50 is completed; when the contact pin holder 52t is engaged with the chip 120, the restricted portion 52g is located below the extended portion toward one end of the ink cartridge 100, the extended portion 133 can effectively suppress the upward tilting of the contact pin holder 52t, and the stopper 130 can limit the contact pin holder 52t in the height direction of the ink cartridge 100, so that the chip 120 and the contact pin holder 52t can be properly engaged.

Alternatively, the projection of the side surface of the extension 133 close to the front end surface 111 in the direction opposite to the mounting direction is located within the corresponding cut-off surface 1311, and the area size of the side surface of the extension 133 in the mounting direction of the ink cartridge 100 does not exceed the area size of the cut-off surface 1311; in the width direction of the ink cartridge 100, the length of the extending portion 133 is smaller than the length of the stopper arm 131, i.e., the extending portion 133 is narrower than the stopper arm 131, so that it can be ensured that the projection of the extending portion 133 in the direction opposite to the mounting direction does not exceed the corresponding cut-off surface 1311 near the side of the mounting groove 113 in the width direction of the ink cartridge 100.

The extending portion 133 is located on the side of the corresponding blocking surface 1311 close to the mounting groove 113 in the width direction of the ink cartridge 100.

Alternatively, as shown in fig. 5 to 7, the side of the outward extension 133 near the mounting groove 113 is a transition surface 133a, the side of the transition surface 133a at the front end in the mounting direction is a front side 133b, and the side of the transition surface 133a at the rear end in the mounting direction is a rear side 133c.

In the width direction of the ink cartridge 100, the distance between the two front sides 133b of the two extending portions 133 is greater than the distance between the two rear sides 133c, so that the extending direction of the transition surface 133a is inclined relative to the mounting direction of the ink cartridge 100, and the projection of the extending portion 133 in the direction opposite to the mounting direction can be ensured not to exceed the side of the corresponding stop surface 1311 close to the mounting groove 113 in the width direction of the ink cartridge 100. With this arrangement, the two extending portions 133 can be advantageously retracted from the portion of the contact pin 52t between the two restricted portions 52g in the width direction of the ink cartridge 100.

In an alternative embodiment, the rear side 133c may coincide with the side of the corresponding stopping surface 1311 adjacent to the mounting groove 113.

Alternatively, the transition surface 133a may be perpendicular to the upper end surface 112. With this arrangement, the distance between the two transition surfaces 133a of the two extending portions 133, which are located at the same position in the mounting direction of the ink cartridge 100, in the width direction of the ink cartridge 100 can be made the same, which facilitates the avoidance of the portion of the contact pin frame 52t between the two restricted portions 52g in the width direction of the ink cartridge 100.

Alternatively, as shown in fig. 5, the upper end surface 112 is provided with escape portions recessed on both sides of the mounting groove 113 in the width direction of the ink cartridge 100, and the escape portions communicate with the mounting groove 113.

The escape portion can escape the tilted-up restricted portion 52 g. The avoiding portion may be an avoiding groove. An 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 provided near the front end surface 111.

The avoidance surface 1121 may be an inclined surface, the avoidance surface 1121 intersects with the front end surface 111, and a side of the avoidance surface 1121, which is away from the front end surface 111, is located above a side of the avoidance surface 1121, which is close to the front end surface 111. In this arrangement, at the initial stage of the ascending of the restricted portion 52g, the escape portion escapes the restricted portion 52g, and the restricted portion 52g can be effectively prevented from further ascending.

The projection of the extension 133 in the height direction of the ink cartridge 100 is at least partially located on the escape surface 1121, and the height direction of the ink cartridge 100 is perpendicular to the upper end surface 112. With this arrangement, at the initial stage of the position limit of the holder 52t by the position limit member 130, the escape portion can escape the restricted portion 52g, and the chip 120 and the holder 52t can be surely engaged with each other properly.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ink cartridge detachably mountable to a mounting portion of a printer, the ink cartridge being mounted to the mounting portion in a linear mounting direction, characterized in that: the ink box comprises a front end part positioned at the front end of the mounting direction, a chip is arranged on the front end part, the front end part comprises a front end face arranged at the front end of the mounting direction and an upper end face intersected with the front end face, a mounting groove is formed in the intersection of the upper end face and the front end face of the front end part, the chip is positioned in the mounting groove, the plane where the chip is positioned is intersected with the upper end face and the front end face, two limiting parts are arranged on the upper end face, the two limiting parts are respectively positioned on two sides of the mounting groove in the width direction of the ink box, and the width direction of the ink box is perpendicular to the mounting direction and parallel to the upper end face;

the limiting part comprises a limiting arm, the limiting arm is positioned above the upper end surface, the extending direction of the limiting arm is parallel to the mounting direction, the side surface of the limiting arm, close to the front end surface, in the mounting direction is a stop surface, and the limiting part further comprises an outer extension part arranged on the stop surface; in the mounting direction, one end, close to the front end face, of the extending portion is located behind the front end face, and the projection of the extending portion in the direction opposite to the mounting direction does not exceed the side edge, close to the mounting groove, of the corresponding cut-off surface in the width direction of the ink cartridge.

2. The ink cartridge as claimed in claim 1, wherein the stopper further comprises a support arm connecting the stopper arm and the upper end surface, and a bottom surface of the extension is flush with a bottom surface of the stopper arm.

3. The ink cartridge according to claim 1, wherein a projection of a side surface of the extended portion that is close to the front end surface in a direction opposite to the mounting direction is located within the corresponding cut-off surface;

4. The ink cartridge according to claim 3, wherein the outward extension portion is located on a side of the cut-off surface corresponding to the mounting groove in a width direction of the ink cartridge.

5. The ink cartridge as claimed in claim 1, wherein a side of the extension portion adjacent to the mounting groove is a transition surface, a side of the transition surface at a front end in the mounting direction is a front side, a side of the transition surface at a rear end in the mounting direction is a rear side, and a distance between the two front sides is greater than a distance between the two rear sides in a width direction of the ink cartridge.

6. The ink cartridge as claimed in claim 5, wherein the rear side coincides with a side of the cut-off surface adjacent to the mounting groove.

7. The ink cartridge of claim 5, wherein the transition surface is perpendicular to the upper end surface.

8. The ink cartridge as claimed in any one of claims 1 to 7, wherein said upper end surface is recessed with an escape portion at both sides of said mounting groove in a width direction of said ink cartridge, said escape portion communicating with said mounting groove.

9. The ink cartridge according to claim 8, wherein an end surface of the avoiding portion in a height direction of the ink cartridge is an avoiding surface, the avoiding surface is an inclined surface, the avoiding surface intersects the front end surface, a side edge of the avoiding surface on a side away from the front end surface is positioned above a side edge of the avoiding surface on a side close to the front end surface, and the height direction of the ink cartridge is perpendicular to the upper end surface.

10. The ink cartridge according to claim 9, wherein a projection of the extended portion in a height direction of the ink cartridge is at least partially located on the escape surface.