CN218702160U - Liquid box - Google Patents

Abstract

The utility model discloses a liquid box includes: a housing; a circuit board including an electrode; and a liquid supply portion extending in a longitudinal direction from the housing. The housing includes a top wall and first and second protrusions protruding upward from the top wall. The first protrusion is located rearward and the second protrusion is located forward with respect to the circuit board. The first protrusion has a first point on its contour; an upper edge of a front end of the second protrusion is defined as a second point; a plane passing through the first point and the second point and extending in a width direction perpendicular to the length direction and the height direction is an imaginary plane; the first protrusion is located below the imaginary plane; the second protrusions at least partially coincide with or are higher than the imaginary plane in the height direction. When the top surface of the liquid box falls downwards, the protection part of the second protrusion above the imaginary plane can contact the ground firstly, and the area of the protection part is larger than the upper edge of the front end of the second protrusion, so that the stress cannot be concentrated as much as that of the liquid box in the prior art, and the possibility of damaging the second protrusion is reduced.

Description

Liquid box

Technical Field

The utility model relates to a printer technical field especially relates to a liquid box.

Background

In prior patent No. CN202010893735.7, there is disclosed an ink jet printer liquid cartridge comprising: a housing defining a liquid reservoir therein; a circuit board including an electrode; a liquid supply portion extending from the housing in a depth direction intersecting the direction of gravity and having an opening facing forward in the depth direction, the liquid supply portion defining a liquid passage therein connecting the liquid storage chamber to the opening and configured to allow liquid within the liquid reservoir chamber to flow out of the housing through the opening, wherein the housing includes: a top wall at which the circuit board is disposed, the top wall facing upward and being located above the liquid supply portion in an upright posture. The first protrusion protrudes upward from the top wall and is located behind the depth direction of the circuit board. And a second protrusion protruding upward from the top wall and located forward of the circuit board in the depth direction, the second protrusion extending in the depth direction and having a front end facing forward in the depth direction, wherein, in an upright posture of the liquid storage box, a position of the first protrusion is higher than an upper edge of the front end of the second protrusion.

Wherein a front end of the second protrusion is located forward of the opening of the liquid supply portion in the depth direction, and wherein, in the upright posture of the liquid cartridge, a position of any portion of the liquid cartridge in a height direction opposite to the gravity direction is not higher than an imaginary plane in a region between a first point on the first protrusion in the depth direction and a second point on the second protrusion, the second point being an upper edge of the front end of the second protrusion, an imaginary plane passing through each of the first point and the second point and extending in a width direction perpendicular to the depth direction and the gravity direction, the first protrusion and the second protrusion being located below the imaginary plane.

When the top wall of the liquid box falls downwards, due to the arrangement relation of the first protrusion and the second protrusion, the upper edge of the front end of the second protrusion can collide with the ground for the second time after the first protrusion touches the ground, and stress is concentrated when the area of the upper edge of the front end of the second protrusion is small in collision, so that the second protrusion can be damaged, and functions are affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a liquid box, include:

a housing defining a liquid storage chamber;

a circuit board comprising an electrode;

a liquid supply portion that extends from the housing in a length direction intersecting with a height direction and has an ink outlet in the length direction, the liquid supply portion having therein a liquid passage that connects the liquid storage chamber to the ink outlet and is configured to allow liquid in the liquid storage chamber to flow out of the housing through the ink outlet;

the housing includes:

a top wall to which the circuit board is provided, the liquid cartridge being in an upright posture, the top wall facing upward and being located above the liquid supply portion;

a first protrusion protruding upward from the top wall, the first protrusion being located rearward of the circuit board in a length direction; and (c) and (d),

a second protrusion protruding upward from the top wall and located in front of the circuit board in the length direction, the second protrusion extending in the length direction, the second protrusion having a front end facing forward in the length direction, the first protrusion being positioned higher than an upper edge of the front end of the second protrusion in the upright posture of the liquid cartridge;

the front end of the second protrusion is located in front of the ink outlet of the liquid supply portion in the longitudinal direction;

the first protrusion has a first point on its contour; the upper edge of the front end of the second protrusion is defined as a second point; a plane passing through the first point and the second point and extending in a width direction perpendicular to the length direction and the height direction is an imaginary plane;

the first protrusion is located below the imaginary plane;

the second protrusions at least partially overlap or are higher than the imaginary plane in the height direction.

In some embodiments, a highest point of the first protrusion in a height direction is the first point, and the first point is located on an upper surface of the first protrusion.

In some embodiments, an upper surface of the first protrusion is inclined with respect to the length direction.

In some embodiments, the second protrusion has:

a front surface extending from the top wall and facing forward in the length direction, the front end of the second protrusion having the front surface;

a main upper surface extending in a length direction, the main upper surface facing upward in an upright posture of the liquid cartridge;

a sub upper surface extending from the main upper surface and intersecting with a length direction, the liquid cartridge in an upright posture, the sub upper surface extending downward and forward, and the upper edge of the front end of the second protrusion being defined by the front surface and the sub upper surface.

In some embodiments, the secondary upper surface is a plane inclined with respect to the length direction.

In some embodiments, the height at which the first point protrudes from the top wall in the height direction is a first height; the height of the second point protruding from the top wall is a fourth height, and the fourth height is smaller than the first height.

In some embodiments, the secondary upper surface is a cambered surface.

In some embodiments, the intersection of the front end of the second protrusion and the top wall is a lower edge of the front end, and the upper edge coincides with the lower edge.

In some embodiments, a dimension of the second protrusion in the length direction is greater than a dimension of the second protrusion in the height direction or a dimension of the second protrusion in the width direction.

In some embodiments, the circuit board is inclined with respect to the length direction.

The utility model has the advantages that: the utility model discloses a part that the second of liquid box is protruding is located hypothetical plane top, falls downwards at the liquid box top surface, and when the second was protruding to collide with ground, the protruding guard portion that is located hypothetical plane top of second can touch ground earlier, because the area of guard portion is greater than the top edge of the protruding front end of second, the atress can not concentrate so much like the liquid box among the prior art, has reduced the protruding possibility that receives the harm of second.

Drawings

Fig. 1 is a schematic view of an angle overall structure of an ink cartridge according to a first embodiment of the present invention;

fig. 2 is a schematic view of an overall structure of an ink cartridge according to another angle of the first embodiment of the present invention;

fig. 3 is a schematic side view of an angle of the ink cartridge according to the first embodiment of the present invention;

fig. 4 is a schematic side view of an angle of an ink cartridge according to a second embodiment of the present invention;

fig. 5 is a schematic side view of an angle of the ink cartridge according to the third embodiment of the present invention;

fig. 6 is a schematic side view of an ink cartridge according to a fourth embodiment of the present invention;

fig. 7 is a schematic side view of an angle of the ink cartridge according to the fifth embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some of the described embodiments of the invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the 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 specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. 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., 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.

Example one

As shown in fig. 1 and 2, the present embodiment provides a liquid cartridge, specifically an ink cartridge, for supplying ink to a printer, the printer being provided with a mounting chamber (not shown), the ink cartridge being detachably mounted in the mounting chamber in an upright posture, the ink cartridge storing therein consumables (e.g., ink) for development, the consumables in the ink cartridge being developed on a printing medium (e.g., paper) when the printer prints. One or more ink cartridges may be accommodated in the mounting chamber, a plurality of the ink cartridges may be disposed side by side in the mounting chamber, and the plurality of the ink cartridges may be cyan, magenta, yellow, and black ink cartridges.

The mounting cavity is roughly in a cuboid shape and is provided with an opening, the ink box is mounted into the mounting cavity from the opening, a plurality of ink box mounting positions are arranged in the mounting cavity, and each ink box is correspondingly mounted in one ink box mounting position. Each ink box installation position of the installation cavity comprises a contact pin, an ink supply pin, a limiting part and a clamping part.

As shown in fig. 1 and 2, the ink cartridge includes a case 1, a circuit board 2 provided to the case 1, a liquid supply portion 3, a first protrusion 4, a second protrusion 5, and a handle 6.

As shown in fig. 1 and 2, the housing 1 has a substantially rectangular parallelepiped shape, and has a front wall a, a rear wall b, a top wall c, a bottom wall d, a left wall e, and a right wall f, the rear wall b is opposite to the front wall a, the top wall c intersects with the front wall a and the rear wall b, the bottom wall d is opposite to the top wall c, the left wall e intersects with the front wall a, the rear wall b, and the top wall c, the right wall f is opposite to the left wall e, and the front wall a, the rear wall b, the top wall c, the bottom wall d, the left wall e, and the right wall f are connected to each other so that the housing 1 forms a substantially rectangular parallelepiped housing 1 structure.

To better explain the components of the ink cartridge, a three-dimensional rectangular coordinate system XYZ axis is established, the housing 1 is set to a Z axis direction along a vertical direction (gravity direction) in a use state (a state of being mounted in an upright posture in the mounting chamber), a direction in which the top wall c points to the bottom wall d is a-Z direction (gravity direction), a horizontal direction is an X direction, that is, a direction in which the rear wall b points to the front wall a is a + X direction, which is also an insertion direction of the ink cartridge, -X direction is a removal direction of the ink cartridge, which is also a length direction of the housing 1, a width direction of the housing 1 is a Y direction, and a direction in which the left wall e points to the right wall f is a + Y direction. The direction of the positive X axis is front, the direction of the negative X axis is back, the direction of the positive Z axis is up, the direction of the negative Z axis is down, the direction of the positive Y axis is left, and the direction of the negative Y axis is right; the movement in the back-and-forth or up-and-down direction or the movement in the X-axis, Y-axis, and Z-axis directions in the embodiments are not limited to the movement in the vertical, horizontal, or parallel direction, and the movement having an inclination angle may be calculated as long as there is a component movement in the direction.

As shown in fig. 1, the housing 1 includes a lower base 11 and an upper cover 12, the upper cover 12 is assembled to the lower base 11 to constitute the housing 1, a front wall a of the housing 1 is constituted by a front wall surface of the lower base 11 and a front wall surface of the upper cover 12, a rear wall b of the housing 1 is constituted by a rear wall surface of the lower base 11 and a rear wall surface of the upper cover 12, a top wall c of the housing 1 is constituted by a top wall surface of the upper cover 12, a bottom wall d of the housing 1 is constituted by a bottom wall surface of the lower base 11, a left wall e of the housing 1 is constituted by a left wall surface of the lower base 11 and a left wall surface of the upper cover 12, and a right wall f of the housing 1 is constituted by a right wall surface of the lower base 11 and a right wall surface of the upper cover 12.

The lower base 11 has a box-like shape opened upward, that is, the upper end of the lower base 11 is opened, a liquid storage chamber for containing ink is provided therein, the upper cover 12 has a box-like shape opened downward, and the upper cover 12 is closed to the upper end of the lower base 11 to shield the opening of the upper end of the lower base 11.

As shown in fig. 1, the lower base 11 and the upper cover 12 may be in a snap-fit connection, specifically, the outer sides of the left wall surface and the right wall surface of the lower base 11 are provided with a latch 111, the left wall surface and the right wall surface of the upper cover 12 are provided with an engaging hole 121 matched with the latch 111, and the latch 111 and the engaging hole 121 may be provided in plurality and distributed at intervals along the length direction. Alternatively, the lower base 11 and the upper cover 12 may be connected by adhesion, welding, or the like. The lower base 11 and the upper cover 12 may be integrally formed.

The ink cartridge as a whole has a flat shape whose dimensions in the height direction and the length direction are respectively larger than those in the width direction.

As shown in fig. 1, the air holes 13 are formed on the casing 1, the air holes 13 are formed on one or both side walls of the casing 1 in the Y direction, that is, the air holes 13 are formed on the right wall f and/or the left wall e, and the air holes 13 are formed on the right wall f and/or the left wall e at positions close to the top wall c and the rear wall b.

As shown in fig. 1, a liquid supply portion 3, the liquid supply portion 3 extending from the housing 1 in a length direction (X-axis direction) intersecting a height direction (Z-axis direction), and the liquid supply portion 3 having an ink outlet 31 facing forward in the length direction, i.e., the ink outlet 31 facing in the + X direction, the liquid supply portion 3 having therein a liquid passage connecting the liquid storage chamber to the ink outlet 31, and the liquid passage being configured to allow liquid in the liquid storage chamber to flow out of the housing 1 through the ink outlet 31. When the ink cartridge is mounted in the mounting chamber in a vertical posture, the ink supply needle in the mounting chamber is inserted into the liquid supply portion 3 from the ink outlet 31 to communicate with the liquid storage chamber, thereby supplying the ink in the ink cartridge to the printer.

As shown in fig. 1 and 2, the top wall c of the housing 1 has a first main top wall c1, a recess c2, a second main top wall c3, and a sub top wall c4, which are arranged in this order in the + X direction, that is, the first main top wall c1 is located rearmost in the X axis direction, and the sub top wall c4 is located foremost in the X axis direction.

The first main ceiling wall c1 is a plane extending in the Y direction and the X direction, the second main ceiling wall c3 is a plane extending in the Y direction and the X direction, the first main ceiling wall c1 is higher than the second main ceiling wall c3 in the Z direction, and the sub set wall is an inclined plane extending in the Y direction and inclined forward and downward (to the + X, -Z direction), that is, the sub ceiling wall c4 is lower than the second main ceiling wall c3 in the Z direction.

As shown in fig. 1 and 2, the concave portion c2 is located between the first main ceiling wall c1 and the second main ceiling wall c3, the concave portion c2 is of a groove-type structure, and the groove bottom of the concave portion c2 is lower than the second main ceiling wall c3 in the Z direction. The chip support 7 is arranged in the concave part c2, the chip support 7 can be detachably installed in the concave part c2 and can be connected in a clamping, pasting, welding and other modes, the chip support 7 is used for installing the circuit board 2, the circuit board 2 is a chip board, the chip board is provided with an electrode 21 (terminal), when the ink box is installed in an installation cavity of the printer, the electrode 21 is contacted with a contact pin in the installation cavity and is electrically connected, and the circuit board 2 is also provided with a storage medium which can store information related to the ink box, such as information of model, ink color, ink amount and the like.

In the present embodiment, as shown in fig. 1 to 3, after the chip holder 7 is mounted in the concave portion c2, the upper surface thereof is substantially flush with the second main top wall c3 in the height direction, the circuit board 2 is inclined with respect to the length direction (X direction), a part of the circuit board 2 protrudes from the upper surface of the chip holder 7, and the electrode 21 is disposed on the part of the circuit board 2 protruding from the upper surface of the chip holder 7.

In some other embodiments, the circuit board 2 may be configured not to be inclined with respect to the longitudinal direction.

In some other embodiments, instead of providing the concave portion c2, the first main top wall c1 may extend to cover the position of the concave portion c2, and the circuit board 2 may be provided on the first main top wall c 1.

In this embodiment, the top wall c of the housing 1 is further provided with a first protrusion 4, the first protrusion 4 protrudes upward (along the + Z direction) from the first main top wall c1, the first protrusion 4 is fixedly disposed on the first main top wall c1, and preferably, the first protrusion 4 and the upper cover 12 are formed as an integral structure; alternatively, the top wall c of the upper cover 12 may be fixed thereto by a separate structure, such as engagement, adhesion, or welding.

As shown in fig. 1 and 2, the first protrusion 4 has a left protrusion 41, a right protrusion 42, and a rear protrusion 43, the right protrusion 42 and the left protrusion 41 being disposed opposite to and spaced apart from each other in the Y-axis direction, the right protrusion 42 and the left protrusion 41 extending in the X-direction, respectively, and the rear protrusion 43 extending in the Y-direction to connect rear ends of the right protrusion 42 and the left protrusion 41.

As shown in fig. 1 and 2, a rear surface 43a of the rear protrusion 43 is a surface of the first protrusion 4 facing rearward (-X axis side), and the rear surface 43a is higher than the first principal ceiling wall c1 and extends in the up-down direction. When the ink cartridge is mounted in the mounting chamber, the rear surface 43a abuts against the engagement portion in the mounting chamber, and the ink cartridge is held in the mounting chamber. The engaging portion may be a crossbar provided in the Y direction on the mounting chamber, and the rear surface 43a of the first projection 4 abuts on the front side of the crossbar in the mounted state.

Further, as shown in fig. 1 and 2, the handle 6 is disposed on the first main top wall c1 of the upper cover 12, and the handle 6 is located behind the first protrusion 4 in the X direction, the handle 6 is disposed to facilitate the detachment of the ink cartridge in the mounting cavity, and the user rotates the ink cartridge in the-Z direction by pressing down the handle 6, so that the rear surface 43a of the first protrusion 4 is disengaged from the engaging portion in the mounting cavity, thereby taking the ink cartridge out of the mounting cavity. The handle 6 and the upper cover 12 may be of an integrally formed structure.

The right protrusion 42, the left protrusion 41, and the rear protrusion 43 each have an upper surface, the upper surfaces of the right protrusion 42, the left protrusion 41, and the rear protrusion 43 are the upper surfaces of the first protrusions 4, the upper surfaces of the right protrusion 42, the left protrusion 41, and the rear protrusion 43 are all located in the same plane, the upper surface is a plane inclined with respect to the length direction (X direction), the upper surface is inclined forward and downward such that the front end thereof is lower than the rear end thereof, and the rear end thereof is connected to the rear surface 43a. The inclined plane of the upper surface of the first projection 4 can serve as a guide when the ink cartridge is mounted, and the engaging portion is guided along the upper surface to the rear surface 43a.

In the present embodiment, as shown in fig. 1 to 3, a second protrusion 5 is further provided on the top wall c of the housing 1, the second protrusion 5 protrudes upward on the second main top wall c3 and the sub top wall c4, the second protrusion 5 is fixedly provided on the top wall c, and the second protrusion 5 extends in the X direction. The second protrusion 5 is located in front of the circuit board 2, i.e., also in front of the first protrusion 4, in the X direction. The second protrusion 5 has a flat plate-like shape whose length in the X direction is larger than its width in the Y direction and also larger than its height in the Z direction. The second projection 5 has a front surface 51, a main upper surface 52, and a sub upper surface 53, the main upper surface 52 being a plane extending in the X direction and the Y direction, the height of the main upper surface 52 in the Z direction being substantially flush with the first main ceiling wall c1, i.e., any point provided on the first main ceiling wall c1 being higher than the main upper surface 52 in the Z direction, the sub upper surface 53 being connected to the main upper surface 52 and located forward of the main upper surface 52, the sub upper surface 53 being inclined with respect to the X direction, i.e., the sub upper surface 53 being an inclined plane inclined forwardly and downwardly, the sub upper surface 53 being lower than the main upper surface 52 in the Z direction. In the X direction, the length of the sub upper surface 53 is greater than the length of the main upper surface 52. One end of the second protrusion 5 in the + X direction is a front end thereof, the front surface 51 is a face of the front end of the second protrusion 5 facing forward in the length direction (X direction), the front surface 51 is located on the rear side of the front wall a of the housing 1, that is, the front end of the second protrusion 5 does not extend to a position of the front wall a of the housing 1, and a distance between the front surface 51 and the front wall a in the length direction (X direction) is a first length D1.

The left and right positions (the position in the Y direction) of the second protrusion 5 on the top wall c are deformed according to the type (e.g., color) of the ink cartridge, for example, the second protrusion 5 of the cyan ink cartridge is close to one side in the-Y direction on the top wall c, the second protrusion 5 of the magenta ink cartridge is located in the middle of the Y direction on the top wall c, the second protrusion 5 of the yellow ink cartridge is close to one side in the + Y direction on the top wall c 8230, the position limiting part of the ink cartridge mounting position corresponding to the color in the mounting cavity corresponds to the position of the second protrusion 5 of the ink cartridge corresponding to the color, for example, the position of the nip on the position limiting part of the ink cartridge mounting position mounting the cyan ink cartridge is close to one side in the-Y direction, when mounting, the cyan ink cartridge is mounted to the ink cartridge mounting position corresponding to the cyan ink cartridge, and the second protrusion 5 can not pass through the nip of the position limiting part in the ink cartridge mounting position, and can prevent the ink cartridge from being inserted erroneously. Further, the user can visually confirm the left and right positions of the second protrusion 5 to identify the type (color) of the ink cartridge.

In the present embodiment, as shown in fig. 3, the first protrusion 4 has a first point P1 on its contour; the upper edge of the front end of the second protrusion 5 is defined as a second point P2; a plane passing through the first point P1 and the second point P2 and extending in the width direction perpendicular to the length direction and the height direction is an imaginary plane 8. Here, the first point P1 is a point on the upper surface of the first protrusion 4, more specifically, the first point P1 on the upper surface of the first protrusion 4 is a point of the rear end, that is, the first point P1 is the highest point on the upper surface of the first protrusion 4. The second point P2 is defined as an upper edge of the front end of the second protrusion 5, which is defined by the front surface 51 and the sub upper surface 53 of the second protrusion 5, i.e., the upper edge is an edge where the front surface 51 and the sub upper surface 53 meet. The second point P2 is a point on the front surface 51, and the distance from the second point P2 to the front wall a of the housing 1 is also the first length D1.

In the region between the first point P1 and the second point P2 in the X direction, the first protrusions 4 are all located below the imaginary plane 8; the second protrusion 5 is at least partially higher than the imaginary plane 8 in the height direction, and a portion higher than the imaginary plane 8 is also referred to as a protection portion 54. When the top surface of the ink box falls downwards and the second protrusion 5 collides with the ground, the protection part 54 of the second protrusion 5 above the imaginary plane 8 contacts the ground first, and because the area of the protection part 54 is larger than the upper edge of the front end of the second protrusion 5, the stress is not concentrated as the ink box in the prior art (CN 202010893735.7), thereby reducing the possibility that the second protrusion 5 is damaged and avoiding the situation that the function of preventing the misplug is damaged due to the damage of the second protrusion 5.

In the present embodiment, the second projection 5 is partially raised above the imaginary plane 8 by changing the shape of the second projection 5. Specifically, the height of the first point P1 on the first protrusion 4 protruding from the top wall c is a first height H1, and the first height H1 may be the same as the height of the first point P1 on the first protrusion 4 in the prior art, that is, in the case that the position (height) of the first point P1 on the first protrusion 4 is not changed, the height of the second point P2 on the second protrusion 5 is reduced to realize that the second protrusion 5 is partially located above the imaginary plane 8; that is, in the case where the first projection 4 and the second projection 5 are all located on the virtual plane 8 in the related art, if the height at which the second point P2 (the upper edge of the front end) on the second projection 5 protrudes from the top wall c is the third height, then the height at which the second point P2 (the upper edge of the front end) on the second projection 5 protrudes from the top wall c in the present embodiment is the fourth height H4, and the fourth height H4 is smaller than the third height, by such an arrangement, at least a part of the second projection 5 (the protection portion 54) is located above the virtual plane 8 that passes through the second point P2 and the first point P1 and extends in the width direction (Y direction), the area of the protection portion 54 with respect to the upper edge is larger, and when the top surface of the ink cartridge falls downward, the protection portion 54 is larger with respect to the contact area with the upper edge, and the force applied thereto is not concentrated too much, and the second projection 5 can be prevented from being damaged by the impact.

It should be noted that, although the highest point of the first protrusion 4 is described as the first point P1, the highest point is not the only choice for the first point P1, and the first point P1 may be any point on the outer contour of the first protrusion 4, and the highest point may be the virtual plane 8 formed by the first point P1, and a part of the second protrusion 5 may be higher than the virtual plane 8, and a part of the second protrusion 5 may also be higher than the virtual plane 8 formed by any other point on the first protrusion 4 as the first point P1.

Example two

This embodiment provides another liquid cartridge (ink cartridge) different from the first embodiment in the structure of the second projection 5.

In this embodiment, as shown in fig. 4, the shape of the second protrusion 5 is different from that of the first embodiment, the secondary upper surface 53 of the second protrusion 5 is an arc surface, the arc surface protrudes upward, the height of the second point P2 protruding from the top wall c is still the fourth height H4, and the height of the first point P1 protruding from the top wall c of the first protrusion 4 is still the first height H1, that is, the imaginary plane 8 in the first embodiment is the same as that of the first embodiment, in this embodiment, the secondary upper surface 53 is configured as an upward protruding arc surface, and compared with the first embodiment, the portion of the second protrusion 5 higher than the imaginary plane 8 is more, the area of the protection portion 54 is larger, and the impact force when the top surface of the ink cartridge falls downward is further dispersed.

The other structures of the ink cartridge of this embodiment are the same as those of the first embodiment, and are not described herein again.

EXAMPLE III

This embodiment provides still another liquid cartridge (ink cartridge) different from the first and second embodiments in the structure of the second projection 5.

In this embodiment, as shown in fig. 5, the upper edge of the front end of the second protrusion 5 moves downward, that is, the height of the second point P2 protruding from the top wall c is smaller than the fourth height H4 of the first embodiment; preferably, the upper edge of the front end of the second protrusion 5 moves down to coincide with the lower edge of the front end, which is the intersection of the front end and the top wall c, i.e. the upper edge also coincides with the top wall c, i.e. the second point P2 protrudes above the top wall c by a height of 0. Since the position of the second point P2 is shifted down, the position of the imaginary plane 8 passing through the first point P1 and the second point P2 is also changed, and the second protrusion 5 is more elevated from the imaginary plane 8 after the second point P2 is shifted down, compared to the first embodiment.

The other structures of the ink cartridge of this embodiment are the same as those of the first embodiment, and are not described herein again.

Example four

This embodiment provides a liquid cartridge (ink cartridge) that is different in structure of the first projection 4 compared with the first to third embodiments.

In the present embodiment, as shown in fig. 6, the first point P1 of the first protrusion 4 moves down; specifically, the highest point of the upper surface of the first protrusion 4 is still used as the first point P1, the height of the first point P1 protruding from the top wall c is the second height H2, and the second height H2 is smaller than the first height H1 in the first embodiment. Since the position of the first point P1 is shifted downward, the position of the imaginary plane 8 passing through the first point P1 and the second point P2 is also changed, and the second protrusion 5 is more elevated from the imaginary plane 8 after the first point P1 is shifted downward than in the first embodiment.

The other structures of the ink cartridge of this embodiment are the same as those of the first embodiment, and are not described herein again.

EXAMPLE five

The present embodiment provides a liquid cartridge (ink cartridge) different from the first to fourth embodiments in the structure of the second protrusion 5.

In the present embodiment, as shown in fig. 7, the front surface 51 of the second protrusion 5 is advanced; specifically, in the longitudinal direction (X direction), the distance between the front surface 51 of the second protrusion 5 and the front wall a of the housing 1 is a second length D2, and the second length D2 is smaller than the first length D1 in the first embodiment, that is, the front surface 51 is moved forward to a position closer to the front wall a than in the first embodiment. Since the front surface 51 is located on the sub ceiling wall c4, and the sub ceiling wall c4 is a plane inclined forward and downward, the front surface 51 of the second protrusion 5 has a downward moving component while advancing forward on the sub ceiling wall c 4. The second point P2 is the upper edge of the front surface 51 of the second protrusion 5, that is, the position of the second point P2 is also relatively moved forward and downward, the position of the second point P2 is moved downward with respect to the position of the second point P2 in the first embodiment, the imaginary plane 8 passing through the first point P1 and the second point P2 is also changed in position, and a part of the second protrusion 5 is higher than the imaginary plane 8.

The utility model discloses an ink cartridge changes the position of the hypothetical plane 8 through first point P1's of first arch 4 height or second point P2 of second arch 5 height through reducing, make at least some of second arch 5 be higher than hypothetical plane 8, fall down at the ink horn top surface, when second arch 5 collided with ground, second arch 5 was located the protection part 54 of hypothetical plane 8 top and can touch ground earlier, because the area of protection part 54 is greater than the upper edge of second arch 5 front end, the atress can not concentrate as much as the ink horn among the prior art, the possibility that second arch 5 received the harm has been reduced.

It should be noted that the various embodiments of the present invention can be implemented in combination, for example, the heights of the first protrusion 4 and the second protrusion 5 are reduced simultaneously (combination of the first embodiment and the fourth embodiment), and for example, the secondary upper surface 53 of the second protrusion 5 is set to be a curved surface, the height of the first protrusion 4 is reduced (combination of the second embodiment and the fourth embodiment), and the like, as long as a part of the second protrusion 5 is higher than the imaginary plane 8, and the combination manner between the embodiments is not limited.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which all fall within the scope of the invention.

Claims (10)

1. A liquid cartridge characterized by comprising:

a housing defining a liquid storage chamber;

a circuit board comprising an electrode;

a liquid supply portion that extends from the housing in a length direction intersecting with a height direction and has an ink outlet in the length direction, the liquid supply portion having therein a liquid passage that connects the liquid storage chamber to the ink outlet and is configured to allow liquid in the liquid storage chamber to flow out of the housing through the ink outlet;

the housing includes:

a top wall to which the circuit board is provided, the liquid cartridge being in an upright posture, the top wall facing upward and being located above the liquid supply portion;

a first protrusion protruding upward from the top wall, the first protrusion being located rearward of the circuit board in the length direction; and (c) and (d),

a second protrusion protruding upward from the top wall and located in front of the circuit board in the length direction, the second protrusion extending in the length direction, the second protrusion having a front end facing forward in the length direction, the first protrusion being positioned higher than an upper edge of the front end of the second protrusion in the upright posture of the liquid cartridge;

the front end of the second protrusion is located in front of the ink outlet of the liquid supply portion in the longitudinal direction;

the first protrusion has a first point on its contour; the upper edge of the front end of the second protrusion is defined as a second point; a plane passing through the first point and the second point and extending in a width direction perpendicular to the length direction and the height direction is an imaginary plane;

the first protrusion is located below the imaginary plane;

the second protrusions at least partially overlap or are higher than the imaginary plane in the height direction.

2. The liquid cartridge according to claim 1, wherein a highest point of the first protrusion in a height direction is the first point, the first point being located on an upper surface of the first protrusion.

3. The liquid cartridge according to claim 2, wherein an upper surface of the first protrusion is inclined with respect to a length direction.

4. A liquid cartridge according to any one of claims 1 to 3, wherein the second projection has:

a front surface extending from the top wall and facing forward in the length direction, the front end of the second protrusion having the front surface;

a main upper surface extending in a length direction, the main upper surface facing upward in an upright posture of the liquid cartridge;

a sub upper surface extending from the main upper surface and intersecting with a length direction, the liquid cartridge in an upright posture, the sub upper surface extending downward and forward, and the upper edge of a front end of the second projection being defined by the front surface and the sub upper surface.

5. The liquid cartridge according to claim 4, wherein the sub upper surface is a plane inclined with respect to a longitudinal direction.

6. The liquid cartridge according to claim 4, wherein a height at which the first point protrudes from the top wall in a height direction is a first height; the height of the second point protruding from the top wall is a fourth height, and the fourth height is smaller than the first height.

7. The liquid cartridge according to claim 4, wherein the sub upper surface is an arc surface.

8. The liquid cartridge according to claim 4, wherein a place where the front end of the second projection meets the top wall is a lower edge of the front end, and the upper edge coincides with the lower edge.

9. The liquid cartridge according to any one of claims 1 to 3 and 5 to 8, wherein a dimension of the second projection in the length direction is larger than a dimension of the second projection in the height direction or a dimension of the second projection in the width direction.

10. The liquid cartridge according to any one of claims 1 to 3 and 5 to 8, wherein the circuit board is inclined with respect to a longitudinal direction.

Images