CN220349342U - Ink box - Google Patents

Abstract

An ink cartridge detachably mountable in an ink cartridge mounting portion of an image forming apparatus, the ink cartridge comprising: the box body is provided with a liquid storage cavity for storing liquid, the liquid storage cavity is provided with an opening, and a sealing film for sealing the liquid storage cavity is arranged on the opening; a piercing member movably disposed on the cartridge body; the puncture member is provided with a abutted part and a puncture part for puncturing the sealing film, and the outer peripheral wall of the puncture part is provided with at least one groove axially recessed towards the puncture part; the puncture part is also provided with at least one ventilation part communicated with the groove; when the abutted part receives the acting force of the ink box mounting part, the penetrating part moves along the penetrating direction and penetrates through the sealing film, and the liquid storage cavity is communicated with the outside through the groove and the ventilation part in sequence.

Description

Ink box

Technical Field

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

Background

The existing ink box is generally provided with an ink storage cavity and a vent communicated with the ink storage cavity, when the ink box is not used, a sealing film is usually arranged at the vent to seal the vent, so that ink in the ink storage cavity is prevented from flowing out of the vent to leak ink. When the ink box is installed in the printer, need the manual work to tear the sealing membrane from the ink box earlier in order to expose the air vent, and then make ink storage chamber and external atmosphere intercommunication, avoid leading to the unable smooth outflow of ink because of the negative pressure appears in the ink storage intracavity at the in-process of printing. However, the operation of manually tearing off the sealing film makes the use of the ink cartridge comparatively complicated, and when the user forgets to tear off the operation of sealing film, the ink in the ink storage cavity can not flow out smoothly in the process of printing, which may cause damage to the printer. The patent document 202221508906.0 provides an ink cartridge provided with an air guide member, by which a seal member of an ink storage chamber of the ink cartridge is pierced to form a vent, simplifying the operation of the ink cartridge.

However, in order to prevent ink leakage caused by breakage of the sealing film in the process of transportation and storage of the ink cartridge and avoid influence of corrosiveness of the ink on the sealing film, the sealing film is generally made of plastic materials with good toughness, and when the sealing film is punctured by the air guide piece in the patent document, the sealing film can completely wrap the periphery of the air guide piece, so that an air inlet space cannot be formed between the sealing film and the air guide piece, and use of the ink cartridge is affected.

Disclosure of Invention

According to an aspect of the present utility model, there is provided an ink cartridge detachably mountable in an image forming apparatus, the ink cartridge including:

the box body is provided with a liquid storage cavity for storing liquid, the liquid storage cavity is provided with an opening, and a sealing film for sealing the liquid storage cavity is arranged on the opening;

a piercing member movably disposed on the cartridge body; the puncture member is provided with a abutted part and a puncture part for puncturing the sealing film, and the outer peripheral wall of the puncture part is provided with at least one groove axially recessed towards the puncture part; the puncture part is also provided with at least one ventilation part communicated with the groove; when the abutted part receives the acting force of the ink box mounting part, the penetrating part moves along the penetrating direction and penetrates through the sealing film, and the liquid storage cavity is communicated with the outside through the groove and the ventilation part in sequence.

According to the utility model, the groove which axially sunken towards the piercing part is arranged, so that the pierced sealing film tends to be wrapped only on the periphery of the piercing part except the groove after the piercing part pierces the sealing film, the surface which is sunken to form the groove and is arranged on the periphery of the piercing part is difficult to wrap, the liquid storage cavity can be connected with the outside through the groove of the cutting edge, and the liquid storage cavity can be communicated with the outside through the groove and the ventilation part in sequence by arranging the ventilation part which can exchange gas with the groove, so that the normal outflow of ink in the printing process is ensured.

In some embodiments, the vent is located radially outward of the groove; the piercing part is also provided with a contact surface, and the contact surface abuts against the sealing film after the piercing part pierces the sealing film; the vent is at least partially located behind the contact surface in the piercing direction, and the recess is at least partially located in front of the contact surface in the piercing direction and at least partially located behind the contact surface.

In some embodiments, the piercing part is provided with an inner cylinder and an outer cylinder, the inner cylinder is provided with a tip for piercing the sealing film, and the groove is arranged on the peripheral wall of the inner cylinder; the outer cylinder is located radially outside the inner cylinder, and the ventilation portion is provided on the outer cylinder.

In some embodiments, the contact surface is formed on the outer cylinder and the vent is a groove provided on the contact surface.

In some embodiments, a cavity is formed between the inner cylinder and the outer cylinder, and the ventilation part is connected with the groove through the cavity.

In some embodiments, ribs are connected between the inner cylinder and the outer cylinder, and the contact surface is formed on the surface of the outer cylinder and/or the ribs facing the liquid storage cavity.

In some embodiments, the cartridge includes a cavity within which the reservoir is disposed and a cap in which the piercing member is movably disposed.

In some embodiments, the lancing member has a mounting portion with an interference fit with the cap, the lancing member being movably disposed in the cap by the mounting portion.

In some embodiments, the lancing member is movably coupled to the cap by a strip-shaped coupling portion.

In some embodiments, the piercing direction is vertically downward.

Drawings

FIG. 1 is a schematic view of an ink cartridge according to the present utility model;

FIG. 2 is a cross-sectional view of the ink cartridge of the present utility model;

FIG. 3 is a schematic structural view of the lancing member of the present utility model;

FIG. 4 is a bottom view of the lancing member of the present utility model;

FIG. 5 is a top view of another embodiment of an ink cartridge of the present utility model;

FIG. 6 is a schematic view of a portion of the structure of the lancing member, connector and cap of the present utility model;

FIG. 7 is a schematic illustration of an ink cartridge of the present utility model being installed;

reference numerals:

a case 1; a cavity 11; a liquid storage chamber 111; a cover 12; an air chamber 121; a housing 122; a locking surface 122a; a chip rack 123; a protrusion 124; a sealing film 13; a piercing member 2; an abutted portion 21; a piercing portion 22; an inner cylinder 222; a tip 222a; a groove 222b; an outer column 223; a ventilation portion 223a; a cavity 224; ribs 225; a contact surface 226; a mounting portion 23; a connection portion 24; a chip 3; an ink cartridge mounting portion 4; a sensor 41; a locking member 42; a pushing portion 43; a guide surface 431.

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.

The utility model provides an ink cartridge which is detachably mounted in an ink cartridge mounting portion 4 of an image forming apparatus. Referring to fig. 7, fig. 7 is a schematic view showing an ink cartridge being mounted in the cartridge mounting portion 4, in which the sensor 41, the lock member 42, the stylus and the pushing portion 43 are provided in the cartridge mounting portion 4, the pushing portion 43 is provided with an inclined guide surface 431, and the cartridge mounting portion 4 may be provided with an intermediate member (not shown).

Referring to fig. 1-2, the ink cartridge includes a cartridge body 1, a piercing member 2, and a chip 3.

The case 1 comprises a cavity 11 and a cover 12 detachably connected to each other, the cover 12 being located above the cavity 11 in a first direction, which in this embodiment is a vertical direction. The cover 12 is provided with a containing portion 122, a chip frame 123 and a protrusion 124 in sequence along the mounting direction, a chip 3 is arranged in the chip frame 123, an electrode is arranged on the chip 3, when the ink cartridge is mounted on the ink cartridge mounting portion 4, the electrode is in contact with a contact pin in the ink cartridge mounting portion 4 and is electrically connected, and information related to the ink cartridge is stored in the chip 3. The accommodating portion 122 of the cover 12 is located behind the chip 3 in the mounting direction, and is higher than the chip 3 in the first direction, and can protect the chip 3 from damage when the ink cartridge is subjected to an external force or falls to the ground. Referring to fig. 7, a surface of the accommodating portion 122 near the rear surface of the ink cartridge (i.e., a surface near the rear in the mounting direction) constitutes a locking surface 122a, and when the ink cartridge is mounted to the cartridge mounting portion 4, the locking surface 122a can abut against the locking piece 42 in the cartridge mounting portion 4, so that the ink cartridge is stably mounted in the cartridge mounting portion 4. The protrusion 124 may strengthen the cover 12 and may also block the signal from the sensor 41 in the cartridge mounting portion 4.

The chamber 11 is provided with a liquid storage chamber 111 for storing liquid, i.e. ink, and the liquid storage chamber 111 may be provided with a labyrinth passage, and the liquid storage chamber 111 has an opening. An air cavity 121 is arranged in the cover body 12, the air cavity 121 is communicated with the outside atmosphere, and a sealing membrane 13 is arranged between an opening of the liquid storage cavity 111 and the air cavity 121 and is used for sealing the liquid storage cavity 111. The reservoir 111 may have a plurality of reservoirs, each reservoir 111 may have a respective opening, provided that the opening corresponding to the location of the lancing member 2 is for lancing by the lancing member 2. The sealing film 13 may be a film covering the openings of all the liquid storage cavities 111 for easy manufacture, or may be a plurality of separate films covering different openings of different liquid storage cavities 111 for easy replacement and maintenance. The sealing film 13 may be PP film, PE film, PS film, aluminized film, or the like.

The piercing member 2 is movably arranged in the cap body 12 for piercing the sealing membrane 13. Specifically, the piercing member 2 is mounted in the accommodating portion 122, and referring to fig. 3 to 4, the piercing member 2 has an abutted portion 21 for interacting with the abutting portion 43 or the intermediate member of the cartridge mounting portion 4, and a piercing portion 22 for piercing the sealing film 13. In the present embodiment, the abutted portion 21 is located at the upper portion of the piercing member 2, and the piercing portion 22 is located at the lower portion of the piercing member 2. The upper surface of the abutted portion 21 is lower than the upper surface of the accommodating portion 122, preventing the piercing member 2 from moving downward by the external force to pierce the sealing film 13 when the ink cartridge is not mounted to the cartridge mounting portion 4.

The piercing portion 22 has an inner cylinder 222 and an outer cylinder 223, and the outer cylinder 223 is located radially outward of the inner cylinder 222. The bottom end of the inner cylinder 222 is provided with a tip 222a for piercing the sealing film 13, the outer peripheral wall of the inner cylinder 222 is provided with at least one axially recessed groove 222b toward the inner cylinder 222, and when the number of grooves 222b is plural, the grooves can extend in the axial direction to have different lengths or can be recessed in the axial direction to have different depths. A cavity 224 may be provided between the outer column 223 and the inner column 222, and a rib 225 may be further connected between the outer column 223 and the inner column 222, the rib 225 extending in a radial direction.

The outer cylinder 223 is further provided with at least one ventilation portion 223a, wherein the ventilation portion 223a is located radially outside the groove 222b, i.e. the distance between the ventilation portion 223a and the central axis of the piercing portion 22 is greater than the distance between the groove 222b and the central axis of the piercing portion 22. The ventilation parts 223a and the grooves 222b may be aligned in the radial direction or not, as long as the ventilation parts 223a may be directly or indirectly communicated with the grooves 222b, so that gas exchange can be performed between the two, in this embodiment, there are a plurality of ventilation parts 223a, which are uniformly distributed along the circumferential direction, and a plurality of grooves 222b, which are uniformly distributed along the circumferential direction, specifically, four ventilation parts 223a and grooves 222b, which are in one-to-one correspondence and aligned in the radial direction, and the ventilation parts 223a and the grooves 222b are communicated through the hollow spaces 224 between the outer columns 223 and the inner columns 222. The ventilation part 223a is located at the radial outer side of the groove 222b, so that when the puncture part 22 punctures the sealing film 13, the punctured sealing film 13 tends to wrap around the periphery of the groove 222b, and is difficult to wrap the ventilation part 223a located at the radial outer side of the groove 222b, the groove 222b is communicated with the outside through the ventilation part 223a, and the liquid storage cavity 111 is communicated with the outside through the groove 222b and the ventilation part 223a in sequence, so that the normal outflow of ink in the printing process is ensured.

In this embodiment, the piercing portion 22 further has a contact surface 226, where the contact surface 226 is used to abut against the sealing film 13 after the piercing portion 22 pierces the sealing film 13 along the piercing direction, so as to better limit the position of the sealing film 13, and the vent portion 223a is guaranteed to communicate with the groove 222b and the liquid storage cavity 111 by the relative positions of the contact surface 226, the vent portion 223a and the groove 222 b.

Specifically, the contact surface 226 may be formed on the surface of the outer cylinder 223 facing the liquid storage chamber 111, that is, the lower surface of the outer cylinder 223, or may be formed on the surface of the rib 225 facing the liquid storage chamber 111, that is, the lower surface of the rib 225, and the lower surface of the outer cylinder 223 is flush with the lower surface of the rib 225 in this embodiment, that is, the contact surface 226 is formed on the lower surfaces of the outer cylinder 223 and the rib 225. The ventilation portion 223a is located at least partially behind the contact surface 226 in the piercing direction, and in this embodiment, the ventilation portion 223a is located entirely behind the contact surface 226 in the piercing direction, and the recess 222b is located at least partially in front of the piercing direction and at least partially behind the piercing direction.

In this embodiment, the piercing direction is parallel to the first direction, i.e. parallel to the vertical direction, and faces downward in the vertical direction, forward of the piercing direction, i.e. downward in the vertical direction, and rearward of the piercing direction, i.e. upward in the vertical direction. When the piercing portion 22 pierces the sealing film 13, the contact surface 226 abuts against the sealing film 13, the ventilation portion 223a is located above the contact surface 226 in the first direction, that is, above the sealing film 13, at least a portion of the groove 222b is located below the contact surface 226 in the first direction, that is, below the sealing film 13, and at least a portion of the groove 222b is located above the contact surface 226, that is, above the sealing film 13, in such a manner that, when the sealing film 13 abuts against the contact surface 226, it is ensured that the portion of the groove 222b located above the contact surface 226 is difficult to be covered by the sealing film 13 due to the blocking of the contact surface 226 by the sealing film 13, and is communicated with the ventilation portion 223a, thereby forming a gas exchange passage to communicate the liquid storage chamber 111 with the outside. In other embodiments, the depth of penetration of the inner cylinder 222 into the opening of the liquid storage chamber 111 may be controlled by the displacement of the piercing portion 22 in the piercing direction, instead of providing the contact surface 226, so that the sealing film 13 is prevented from completely wrapping the outer periphery of the inner cylinder 222, and the groove 222b is further wrapped and sealed, so that communication with the ventilation portion 223a is difficult. In this embodiment, the ventilation portion 223a is a groove provided on the contact surface 226, and in other embodiments, the ventilation portion 223a may be a hole. In other embodiments, the piercing direction may be inclined with respect to the first direction, and the piercing member 2 may be inclined with respect to the first direction, as long as the sealing film 13 can be moved by the pushing portion 43 and pierced.

The lancing member 2 also has a mounting portion 23 for interference fit with the cap 12, the lancing member 2 being movably disposed in the cap 12 by the mounting portion 23. When the ink cartridge is mounted in the ink cartridge mounting portion 4, the abutted portion 21 receives the urging force of the ink cartridge mounting portion 4, specifically, the abutted portion 43 may apply the urging force to the abutted portion 21 through the guide surface 431, or the abutted portion 43 may apply the urging force to the abutted portion 21 through the intermediate member, so that the puncture member 2 moves downward in the first direction to puncture the sealing film 13. The mounting portion 23 is interference fit with the cap body 12 such that the piercing member 2 can be held stationary when no external force is applied thereto and can be moved relative to the cap body 12 when the force of the pushing portion 43 or the intermediate member is applied thereto.

Referring to fig. 5-6, in other embodiments, the mounting portion 23 may be replaced with a connecting portion 24, and the lancing member 2 is movably connected to the cap 12 via the strip-shaped connecting portion 24. The connecting portion 24 has a certain supporting force, specifically, one end of the connecting portion 24 connected to the piercing member 2 may be inclined upward compared to one end connected to the cap body 12, so that the supporting force is enhanced, the piercing member 2 can be kept stationary under the action of the connecting portion 24 when no external force is received, and can move to a certain extent relative to the cap body 12 when the acting force of the abutting portion is received.

In other embodiments, a hollow channel may be provided in the lancing member 2 through the lancing member 2, one end of the hollow channel being in communication with the outside and the other end being in communication with the piercing portion 22, for example in communication with the groove 222b or through the tip 222a for lancing the sealing membrane 13, such that when the lancing member 2 lances the sealing membrane 13, the liquid storage chamber 111 is in communication with the outside through the hollow channel.

In other embodiments, the inner cylinder 222 may be provided with a ring protruding radially outward, the lower surface of the ring being the contact surface 226, the bottom end of the groove 222b being lower than the ring for communicating with the liquid storage chamber 111 after the sealing membrane 13 is pierced, and the top end of the groove 222b being higher than the ring and communicating with the outside, in which case the outer cylinder 223 may not be provided.

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 several modifications and improvements can be made to the above-described embodiments, or the above-described embodiments can be freely combined, including the technical features of the different embodiments described above, without departing from the inventive concept of the present utility model.

Claims (10)

1. An ink cartridge detachably mountable in an ink cartridge mounting portion of an image forming apparatus, the ink cartridge comprising:

the box body is provided with a liquid storage cavity for storing liquid, the liquid storage cavity is provided with an opening, and a sealing film for sealing the liquid storage cavity is arranged on the opening;

a piercing member movably disposed on the cartridge body; the puncture member is provided with a abutted part and a puncture part for puncturing the sealing film, and the outer peripheral wall of the puncture part is provided with at least one groove axially recessed towards the puncture part; the puncture part is also provided with at least one ventilation part communicated with the groove; when the abutted part receives the acting force of the ink box mounting part, the penetrating part moves along the penetrating direction and penetrates through the sealing film, and the liquid storage cavity is communicated with the outside through the groove and the ventilation part in sequence.

2. The ink cartridge according to claim 1, wherein: the ventilation part is positioned on the radial outer side of the groove; the piercing part is also provided with a contact surface, and the contact surface abuts against the sealing film after the piercing part pierces the sealing film; the vent is at least partially located behind the contact surface in the piercing direction, and the recess is at least partially located in front of the contact surface in the piercing direction and at least partially located behind the contact surface.

3. The ink cartridge according to claim 2, wherein: the puncture part is provided with an inner cylinder and an outer cylinder, the inner cylinder is provided with a tip for puncturing the sealing film, and the groove is arranged on the peripheral wall of the inner cylinder; the outer cylinder is located radially outside the inner cylinder, and the ventilation portion is provided on the outer cylinder.

4. An ink cartridge according to claim 3, wherein: the contact surface is formed on the outer cylinder, and the ventilation part is a groove arranged on the contact surface.

5. The ink cartridge as in claim 4, wherein: and a cavity is formed between the inner column body and the outer column body, and the ventilation part is connected with the groove through the cavity.

6. The ink cartridge according to claim 5, wherein: and ribs are connected between the inner cylinder and the outer cylinder, and the contact surface is formed on the surface of the outer cylinder and/or the surface of the ribs, which faces the liquid storage cavity.

7. The ink cartridge according to any one of claims 1 to 6, wherein: the cartridge includes a cavity and a cap, the reservoir is disposed within the cavity, and the piercing member is movably disposed within the cap.

8. The ink cartridge as in claim 7, wherein: the lancing member has a mounting portion with an interference fit with the cap, through which the lancing member is movably disposed in the cap.

9. The ink cartridge as in claim 7, wherein: the piercing member is movably connected to the cap body by a strip-shaped connecting portion.

10. The ink cartridge according to any one of claims 1 to 6, wherein: the piercing direction is vertically downward.