CN219927279U

CN219927279U - Ink box

Info

Publication number: CN219927279U
Application number: CN202320971404.XU
Authority: CN
Inventors: 夏敬章; 林泽富
Original assignee: Zhuhai Ninestar Management Co Ltd
Current assignee: Zhuhai Ninestar Management Co Ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-10-31
Anticipated expiration: 2033-04-25

Abstract

The utility model discloses an ink box which is arranged on an installation part along an installation direction, wherein the ink box comprises a front end part, an installation groove is formed at the intersection of the upper end surface and the front end surface of the front end part, and a chip is arranged in the installation groove; the mounting part comprises a fixing bracket and an electric connection part, the main body part of the electric connection part is provided with two outer side walls, the upper edge of the outer side wall is provided with an upper edge, the fixing bracket comprises a limiting part for limiting the movement of the electric connection part, the limiting part comprises a guide groove matched with the upper edge, the upper edge is positioned in the guide groove, and an alignment gap is arranged between the upper end wall of the guide groove and the upper surface of the upper edge; the front end part comprises two limiting arms, the end parts of the limiting arms in the installation direction are provided with positioning heads which can be inserted into the alignment gaps through the open ends, the upper sides of the positioning heads are matched with the upper end walls of the corresponding guide grooves, and the lower sides of the positioning heads are matched with the upper surfaces of the corresponding upper edges. According to the ink box, the limiting arm inserted into the gap between the fixing support and the electric connecting part is used for limiting the electric connecting part in the plumb upward direction.

Description

Ink box

Technical Field

The utility model relates to the technical field of printing consumables, in particular to an ink box.

Background

The prior art adopts the original high-capacity ink box of linear plug-in installation, its front end in installation direction sets up the front end portion with printer side installation department complex, and the slope is provided with the chip on this front end portion, and printer side installation department includes the fixed bolster and movably sets up the electric connection portion on the fixed bolster, can accurately counterpoint between fixed bolster and the ink box in the installation, but electric connection portion can't guarantee to all can strictly reset after accomplishing the dismouting of ink box once at every time.

The prior ink box is characterized in that a limiting structure directly acting on the electric connection part is introduced on the front end part to limit the electric connection part, but the initial position of the electric connection part is not fixed, so that the chip and the electric connection part still have the risk of being unable to be correctly jointed.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide the ink box which acts on the fixed support and indirectly realizes the scheme of limiting the electric connection part so as to ensure that the electric connection part and the chip can be correctly jointed.

According to an aspect of the present utility model, there is provided an ink cartridge mounted to a mounting portion in a linear mounting direction, the ink cartridge including a front end portion located at a front end in the mounting direction, the front end portion including a front end surface provided at a front end side in the mounting direction and an upper end surface intersecting the front end surface, the front end portion provided with a mounting groove at a place where the upper end surface intersects the front end surface, the mounting groove having a chip therein;

the mounting part comprises a fixed bracket and an electric connection part matched with the chip, the electric connection part is movably arranged on the fixed bracket, the electric connection part comprises a main body part, the main body part is provided with two opposite outer side walls, the upper edge of the outer side wall is provided with an upper edge along the mounting direction, the outer side wall is perpendicular to 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 fixing support comprises a limiting part for limiting the electric connection part to move in the width direction and the plumb direction of the ink box, the limiting part comprises a guide groove matched with the upper edge, the upper edge is positioned in the guide groove, one end of the guide groove, which is close to the front end part, is an open end, the extending direction of the guide groove is parallel to the mounting direction, and an alignment gap is formed between the upper end wall of the guide groove and the upper surface of the upper edge;

the front end part comprises two limiting arms acting on the upper edge, the limiting arms are located above the upper end face, positioning heads capable of being inserted into alignment gaps through the opening ends are arranged at the end parts of the limiting arms in the installation direction, the upper sides of the positioning heads are matched with the upper end walls of the corresponding guide grooves, and the lower sides of the positioning heads are matched with the upper surfaces of the corresponding upper edges.

In some embodiments, the front end portion further includes a support portion connecting the stopper arm and the front end portion, the main body portion and the stopper arm portion overlap each other in a plumb direction, and the two stopper arms have inner blocking walls on opposite sides that are engaged with the corresponding outer side walls.

In some embodiments, the end surface of the limiting arm in the installation direction is a front abutting surface abutting against the end part of the upper edge, the positioning head is arranged on the front abutting surface, and the plumb length of the front abutting surface is larger than that of the positioning head.

In some embodiments, the positioning head is provided with inclined sides on opposite sides, the inclined sides are provided with first ends and second ends, the first ends of the inclined sides are located on the front end side of the installation direction of the second ends of the inclined sides, and the distance between the first ends of the two inclined sides in the width direction of the ink box is greater than the distance between the second ends of the two inclined sides in the width direction of the ink box.

In some embodiments, the positioning head further comprises a first surface and a second surface which are oppositely arranged in the plumb direction, the side surface of the positioning head corresponding to the inclined side edge is an inclined side surface, the plumb length of the inclined side surface is smaller than the distance between the first surface and the second surface, and the positioning head further comprises two transition surfaces respectively connecting the inclined side surface with the first surface and the second surface.

In some embodiments, the mounting groove is provided with side stop ribs on opposite inner walls that cooperate with the outer side walls.

In some embodiments, the mounting groove is provided with an inner convex portion on two opposite inner walls, and an upper side of the inner convex portion is provided with an upper abutting surface matched with a lower surface of the main body portion, and the upper abutting surface is parallel to the mounting direction.

In some embodiments, the upper end surface is recessed on a front side of the stopper arm in the mounting direction, and a relief portion is provided to penetrate through the upper end surface and the front end surface.

Compared with the prior art, the ink box realizes the upward limit of the electric connection part on the plumb through the limit arm inserted into the gap between the fixed support and the electric connection part, and the alignment precision between the electric connection part and the ink box can be improved by acting on the fixed support and indirectly realizing the above limit mode for limiting the electric connection part due to the fact that the fixed support and the ink box can be accurately positioned, so that the electric connection part and the chip can be correctly jointed. In addition, the scheme also realizes the limit of the electric connection part in the width direction of the ink box by means of the inner baffle wall and the side baffle ribs, and further improves the alignment precision between the electric connection part and the ink box. The ink box and the electric connection part have more and dispersed action sites, and the alignment correction effect for the electric connection part is superior to that of the existing scheme.

Drawings

Fig. 1 is a structural view of a mounting portion corresponding to an embodiment of an ink cartridge of the present utility model.

Fig. 2 is a diagram showing a separated state of the ink cartridge according to the embodiment of the present utility model from the tray.

Fig. 3 is a partially enlarged structural view of the area a in fig. 2.

Fig. 4 is a partial construction diagram of a mounting portion according to an embodiment of the ink cartridge of the present utility model.

Fig. 5 is a structural diagram of an electrical connection portion corresponding to an embodiment of the ink cartridge of the present utility model.

Fig. 6 is a partial construction view of a front end portion of an embodiment of an ink cartridge of the present utility model.

FIG. 7 is a diagram showing the structure of the cartridge according to the embodiment of the present utility model and the fitting portion.

Fig. 8 is a sectional structural view corresponding to the transverse sectional line (A-A) in fig. 7.

Fig. 9 is a diagram showing the structure of the ink cartridge according to the embodiment of the present utility model and the corresponding electrical connection portion.

Fig. 10 is a sectional structural view corresponding to a longitudinal sectional line (B-B) in fig. 7.

Detailed Description

The present utility model will now be described in further detail with reference to the accompanying drawings, wherein the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

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

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either fixedly attached, detachably attached, or integrally formed; may be a mechanical connection; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the above description, descriptions of the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., 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 utility model. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

As shown in fig. 1 to 10, the present embodiment provides an ink cartridge 30 detachably mounted to a mounting portion 50 of a printer. The ink cartridge 30 is mounted to the mounting portion 50 in a linear mounting direction, and the ink cartridge 30 may be an ink bag type ink cartridge or another type of large-capacity ink cartridge. The +y axis direction in fig. 1 and 2 is the mounting direction of the ink cartridge 30.

As shown in fig. 2, the printer further includes a tray 20, and the ink cartridges 30 are mounted on the tray 20 to form a combination, 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 locking portion 54. The device-side terminal portion 52 includes an electrical connection portion 52t, and a contact pin provided on the electrical connection portion 52t is used to abut against the chip 31 of the ink cartridge 30. The electrical connection portion 52t has a degree of freedom of movement in a direction perpendicular to the mounting direction (including the plumb direction and the cartridge width direction).

As shown in fig. 2, the tray 20 has a substantially rectangular parallelepiped shape with an opening, and the tray 20 has a first face 20a, a second face 20b, a bottom face 20c, an opening 20d, a first side face 20e, and a second side face 20f. Three coordinate axes of an X axis, a Y axis and a Z axis are mutually perpendicular. The direction in which the opening 20d is directed to the accommodation bottom surface 20c is +z-axis direction, which is also vertical direction, and-Z-axis direction is inverse plumb direction. The second surface 20b is directed in the direction of the first surface 20a in the +y-axis direction, which is also the mounting direction of the combination of the ink cartridge 30 and the tray 20 to the mounting portion 50, -the Y-axis direction is the direction in which the combination of the ink cartridge 30 and the tray 20 is removed from the mounting portion 50, -and the Y-axis direction is the reverse mounting direction. 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.

As shown in fig. 2, the tray 20 further has a receiving cavity 210, a fixing structure 22, and tray positioning portions 21, where the receiving cavity 210 is used to receive the ink cartridge 30, and two tray positioning portions 21 are disposed on the first surface 20a, and the tray positioning portions 21 may be holes; the fixed structure 22 may be a card slot structure having a serpentine channel formed therein, with the access opening of the card slot structure being provided on the first face 20a, and the locking portion 54 entering from the access opening and moving along the serpentine channel to the locking position. When the tray 20 is mounted on the mounting portion 50, the tray positioning portion 21 is coupled with the positioning portion 53 to position the tray 20 at a substantially position in a direction perpendicular to the mounting direction, and the fixing structure 22 is coupled with the locking portion 54 to prevent the tray 20 from being separated from the mounting portion 50.

The width direction of the ink cartridge 30 (hereinafter, referred to as the ink cartridge width direction) may be the extending direction of the X-axis, the height direction of the ink cartridge 30 may be the extending direction of the Z-axis, and the length direction of the ink cartridge 30 may be the extending direction of the Y-axis. The direction along the +y axis (mounting direction) is the "front" of the ink cartridge 30, the direction along the-Y axis is the "rear" of the ink cartridge 30, the direction along the +z axis (plumb direction) is the "lower" of the ink cartridge 30, and the direction along the-Z axis is the "upper" of the ink cartridge 30.

As shown in fig. 2, the ink cartridge 30 includes an ink storage portion 31 and a front end portion 32 connected, the ink storage portion 31 may be an ink bag for storing ink, the front end portion 32 is located at a front end of the ink cartridge 30 in the mounting direction, and a chip 33 is provided on the front end portion 32. The tip portion 32 includes a tip end surface 32a (surface facing the +y axis direction) provided on the tip end side in the mounting direction, and an upper end surface 32b (surface facing the-Z axis direction) intersecting the tip end surface 32a. The front end portion 32 further includes an ink outlet 321, the ink outlet 321 communicating with the ink storage portion 31 and for being combined with the ink supply needle 51 to supply ink in the ink storage portion 31 to the printer. The ink outlet 321 is provided through the front end surface 32a of the front end portion 32, and the ink outlet 321 is located at a substantially middle position of the front end portion 32 in the X-axis direction.

As shown in fig. 2, 3, 6, and 7, the front end portion 32 is provided with a mounting groove 322 at the intersection of the upper end face 32b and the front end face 32a, the chip 33 is provided in the mounting groove 322, and the mounting groove 322 is located on the-X axis direction side of the ink outlet 321. The chip 33 is disposed in the mounting groove 322 in an inclined manner, and the plane on which the chip 33 is disposed intersects both the upper end face 32b and the front end face 32a. The edge of the chip 33 in the mounting direction is a front edge 331, the front edge 331 is also a lower edge of the chip 33, that is, the front edge 331 of the chip 33 is located lower than the rear edge of the chip 33 in the Z-axis direction (the edge of the chip 33 in the reverse mounting direction is also an upper edge of the chip 33), and the front edge 331 of the chip 33 does not protrude from the front end face 32a of the front end portion 32 in the mounting direction.

As shown in fig. 2 to 10, two stoppers 323 are further provided on the front end portion 32, the two stoppers 323 are respectively located on both sides of the mounting groove 322 in the width direction of the ink cartridge, the stoppers 323 include a stopper arm 3231, the stopper arm 3231 is located on the upper side (-Z axis direction side) of the upper end face 32b, and the extending direction of the stopper arm 3231 is parallel to the mounting direction. The stopper arm 3231 is provided with a positioning head 3232 at an end in the mounting direction, and an extending direction of the positioning head 3232 is parallel to the mounting direction. The tip portion 32 positions the electrical connection portion 52t in the plumb direction by positioning heads 3232 at the ends of the two stoppers 323. Specifically, the frame of the mounting portion 50 includes a fixing bracket 55, the ink supply needle 51 is provided on a surface (a surface facing the-Y axis direction) of the fixing bracket 55 in a direction opposite to the mounting direction, the electric connection portion 52t is movably provided on a surface (a surface facing the-Y axis direction) of the fixing bracket 55 in a direction opposite to the mounting direction, and the electric connection portion 52t is located on the-X axis side of the ink supply needle 51. The electrical connection portion 52t includes a main body portion 52a, the main body portion 52a having two outer side walls 52b disposed opposite to each other, the outer side walls 52b being perpendicular to the ink cartridge width direction and parallel to the mounting direction, the ink cartridge width direction being perpendicular to the mounting direction and parallel to the upper end face 32b, the outer side walls 52b being provided with upper edges 52c along the mounting direction at the upper edge. The fixing bracket 55 includes a restricting portion 55a that restricts movement of the electrical connection portion 52t in the cartridge width direction and the plumb direction, the restricting portion 55a includes a guide groove 55b that mates with the upper edge 52c, the extending direction of the guide groove 55b is parallel to the mounting direction, the upper edge 52c is located in the guide groove 55b, one end of the guide groove 55b near the front end portion 32 is an open end 55c, and an alignment gap 55d is provided between an upper end wall facing the +z axis in the guide groove 55b and an upper surface facing the-Z axis of the upper edge 52c. When the ink cartridge 30 is mounted on the mounting portion 50 along the mounting direction, the positioning head 3232 at the end of the limiting arm 3231 along the mounting direction is inserted into the alignment gap 55d through the open end 55c, the upper side of the positioning head 3232 facing the-Z axis is matched with the upper end wall facing the +z axis in the corresponding guide groove 55b, the lower side of the positioning head 3232 facing the +z axis is matched with the upper surface facing the-Z axis of the corresponding upper edge 52c, limiting the electric connection portion 52t in the plumb direction is achieved, movement of the electric connection portion 52t in the plumb direction is effectively inhibited, and the 'matching' can be contact matching or clearance matching, and the size of specific structural features can be specifically optimized in consideration of specific limiting requirements. Since the fixing bracket 55 is fixed to the mounting portion 50, accurate alignment with the ink cartridge 30 can be achieved by the fitting of the positioning head 3232 to the upper end wall of the guide groove 55b and the upper surface of the upper edge 52c, the fitting of the positioning portion 53 to the tray positioning portion 21, the fitting of the locking portion 54 to the fixing structure 22, and the like. The electrical connection portion 52t has a small moving space with respect to the fixing bracket 55 in any direction perpendicular to the mounting direction, so that the mode of directly acting on the fixing bracket 55 and indirectly realizing the limitation of the electrical connection portion 52t is more advantageous than the mode of directly acting on the electrical connection portion 52t to limit it.

As shown in fig. 2, 3, 8, 9 and 10, the front end portion 32 further includes a support portion 324 connecting the stopper arm 3231 and the front end portion 32, one end of the support portion 324 is connected to the upper end surface 32b of the front end portion 32, the other end of the support portion 324 is connected to one end of the stopper arm 3231 in the-Y axis direction, the support portion 324 extends in the Z axis direction, the support portion 324 is perpendicular to the stopper arm 3231 and the upper end surface 32b, the main body portion 52a and the stopper arm 3231 partially overlap in the plumb direction, and the two stopper arms 3231 have inner stopper walls 3231a on opposite sides that are engaged with the corresponding outer side walls 52 b. When the ink cartridge 30 is mounted to the mounting portion 50 in the mounting direction, the stopper arm 3231 restricts the electrical connection portion 52t in the cartridge width direction by the inner stopper wall 3231a.

As shown in fig. 2 to 3, the end surface of the stopper arm 3231 in the mounting direction is a front abutment surface 3231b (surface facing the +y axis direction) abutting against the end portion (surface facing the-Y axis direction) of the upper edge 52c, and the positioning head 3232 is provided on the-Z direction side of the front abutment surface 3231b so as to protrude therefrom, and the plumb length of the front abutment surface 3231b is longer than that of the positioning head 3232.

As shown in fig. 6, the positioning head 3232 is provided with inclined side edges 3232e on opposite sides, the inclined side edges 3232e have a first end 3232e1 and a second end 3232e2, the first end 3232e1 of the inclined side edge 3232e is located on the mounting direction front end side of the second end 3232e2 of the inclined side edge 3232e, and the distance between the first ends 3232e1 of the two inclined side edges 3232e in the ink cartridge width direction is larger than the distance between the second ends 3232e2 of the two inclined side edges 3232e in the ink cartridge width direction. The portion of the positioning head 3232 corresponding to the first end 3232e1 of the beveled side edge 3232e is smaller in size and is positioned outwardly in the width direction of the ink cartridge, which reduces the probability and extent to which the positioning head 3232 interferes with the upper edge 52c and the restricting portion 55a, thereby facilitating insertion of the positioning head 3232 into the alignment gap 55d.

As shown in fig. 2-3, the positioning head 3232 further includes a first surface 3232a (a surface facing the-Z axis direction) and a second surface 3232b (a surface facing the +z axis direction) opposite to each other in the plumb direction, the side of the positioning head 3232 corresponding to the inclined side 3232e is an inclined side 3232c, the plumb length of the inclined side 3232c is smaller than the distance between the first surface 3232a and the second surface 3232b, the positioning head 3232 further includes two transition surfaces 3232d connecting the inclined side 3232c with the first surface 3232a and the second surface 3232b, respectively, and the transition surfaces 3232d may be inclined planes or arc surfaces. The transition surface 3232d is also provided to facilitate insertion of the alignment head 3232 into the alignment gap 55d to reduce interference.

As shown in fig. 2, 3, 4, 5, 9, and 10, the outer wall 52b of the electrical connection portion 52t is provided with a restricted portion 52d, the restricted portion 52d is an outer edge protruding from the outer wall 52b, the restricted portion 52d extends in the mounting direction of the ink cartridge 30, the restricted portion 52d is located approximately in a middle portion of the outer wall 52b and is located downward, and the restricted portion 52d divides the outer wall 52b into an upper outer wall 52b1 located above the restricted portion 52d and a lower outer wall 52b2 located below the restricted portion 52 d. The mounting groove 322 is provided with side stop ribs 325 on opposite inner walls that cooperate with the lower outer side wall 52b2 of the lower half of the outer side wall 52 b. When the chip 33 is engaged with the electrical connection portion 52t, the lower half of the electrical connection portion 52t is inserted between the two side stop ribs 325, and the lower outer sidewall 52b2 of the lower half of the electrical connection portion 52t is engaged with the side stop ribs 325, and the two side stop ribs 325 can limit the electrical connection portion 52t in the width direction of the ink cartridge, which helps to ensure proper engagement between the chip 33 and the electrical connection portion 52t.

As shown in fig. 2, 3, 9 and 10, the mounting groove 322 has inner protrusions 326 provided on opposite inner walls, and upper sides of the inner protrusions have upper abutment surfaces 3261 which are engaged with the lower surface of the main body 52a, the upper abutment surfaces 3261 being parallel to the mounting direction. The upper abutment surface 3261 is engaged with the lower surface of the main body portion 52a during the mounting of the ink cartridge 30, and the upper abutment surface 3261 serves as a guide and support for further enhancing the engagement of the ink cartridge 30 with the main body portion 52a on the basis of the side stop rib 325.

As shown in fig. 2, 3 and 9, the upper end surface 32b is recessed on the front side of the stopper arm 3231 in the mounting direction to form a relief portion 327 penetrating the upper end surface 32b and the front end surface 32a, and the front end portion 32 includes two relief portions 327 located on the-X axis side and the +x axis side of the mounting groove 322, respectively. The electrical connection portion 52t is movably provided on the mounting portion 50, and there is a small moving space in each direction on the plane defined by the ink cartridge width direction and the plumb direction, and strict reset cannot be ensured, so that the introduction avoiding portion 327 in the region where the front end portion 32 is liable to interfere with the restricted portion 52d can accommodate the electrical connection portion 52t having different initial attitudes.

According to the ink box 30 provided by the utility model, the limiting arm 3231 inserted into the gap between the fixing support 55 and the electric connection part 52t realizes the limiting of the electric connection part 52t in the plumb upward direction, and because the fixing support 55 and the ink box 30 can realize accurate positioning, the positioning accuracy between the electric connection part 52t and the ink box 30 can be improved by acting on the fixing support 55 and indirectly realizing the limiting mode for limiting the electric connection part 52t, and the electric connection part 52t and the chip 33 can be accurately jointed. In addition, the present solution further realizes the limitation of the electrical connection portion 52t in the width direction of the ink cartridge by means of the inner blocking wall 3231a and the side blocking rib 325, so as to further improve the alignment precision between the electrical connection portion 52t and the ink cartridge 30. The ink box 30 and the electric connection part 52t have more and dispersed action sites, and the alignment correction effect for the electric connection part 52t is superior to that of the prior art.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. An ink cartridge mounted to a mounting portion in a linear mounting direction, the ink cartridge comprising a front end portion located at a front end in the mounting direction, the front end portion including a front end surface provided at a front end side in the mounting direction and an upper end surface intersecting the front end surface, the front end portion being provided with a mounting groove at a position where the upper end surface intersects the front end surface, a chip being provided in the mounting groove;

2. The ink cartridge according to claim 1, wherein the front end portion further includes a support portion connecting the stopper arm and the front end portion, the main body portion and the stopper arm portion overlap each other in a plumb direction, and the two stopper arms have inner blocking walls on opposite sides that are engaged with the corresponding outer side walls.

3. The ink cartridge according to claim 1, wherein an end surface of the stopper arm in the mounting direction is a front abutment surface against an end portion of the upper edge, the positioning head is provided on the front abutment surface, and a plumb length of the front abutment surface is longer than a plumb length of the positioning head.

4. The ink cartridge according to claim 1, wherein the positioning head is provided with inclined side edges on opposite sides, the inclined side edges are provided with first ends and second ends, the first ends of the inclined side edges are located on a front end side in a mounting direction of the second ends of the inclined side edges, and a distance between the first ends of the two inclined side edges in the width direction of the ink cartridge is larger than a distance between the second ends of the two inclined side edges in the width direction of the ink cartridge.

5. The ink cartridge of claim 4, wherein the positioning head further comprises a first surface and a second surface disposed opposite to each other in a plumb direction, a side of the positioning head corresponding to the inclined side is an inclined side, a plumb length of the inclined side is smaller than a distance between the first surface and the second surface, and the positioning head further comprises two transition surfaces connecting the inclined side with the first surface and the second surface, respectively.

6. The ink cartridge as in any one of claims 1-5, wherein the mounting groove is provided with side stop ribs on opposite inner walls that mate with the outer side walls.

7. The ink cartridge according to any one of claims 1 to 5, wherein the mounting groove is provided with inner protrusions on opposite inner walls, an upper side of the inner protrusions being provided with an upper abutment surface that mates with a lower surface of the main body portion, the upper abutment surface being parallel to a mounting direction.

8. The ink cartridge according to any one of claims 1 to 5, wherein the upper end surface is recessed on a front side of the stopper arm in the mounting direction to provide a relief portion penetrating the upper end surface and the front end surface.