CN212332167U

CN212332167U - Pressure regulating unit and ink box with same

Info

Publication number: CN212332167U
Application number: CN202020038102.3U
Authority: CN
Inventors: 余青松; 王海权
Original assignee: Zhuhai Dinglong Huijie Technology Co ltd
Current assignee: Zhuhai Dinglong Huijie Technology Co ltd
Priority date: 2020-01-08
Filing date: 2020-01-08
Publication date: 2021-01-12
Anticipated expiration: 2030-01-08
Also published as: WO2021139072A1

Abstract

The pressure adjusting unit comprises a face cover, a base and a diaphragm, wherein the face cover is matched with the base and forms a deformable cavity and an ink cavity, and the diaphragm is assembled at the position of the deformable cavity; the deformable cavity is internally provided with a communicating part, and the deformable cavity is communicated with the ink cavity or the external atmosphere through the communicating part; and a one-way valve is arranged on a passage connecting the variable cavity and the ink cavity, the diaphragm deforms to close the communicating part, and the one-way valve is opened by changing the pressure in the variable cavity. The utility model discloses the diaphragm that utilizes deformable intracavity deformation closes deformable intracavity intercommunication portion, and through changing but deformable intracavity pressure is opened the check valve to this realization plays the black control to the play of ink horn, plays the effect of protection to the diaphragm simultaneously, has extension diaphragm life's effect, in addition, has also improved the life of ink horn.

Description

Pressure regulating unit and ink box with same

Technical Field

The utility model belongs to the technical field of the inkjet is printed relatively, especially relate to a pressure regulating unit and have its ink horn.

Background

An ink jet printer is an apparatus using a rapid prototyping technique, which ejects a color liquid ink through a nozzle into fine particles onto a printing paper by a print head. The ink box is an important component of the ink-jet printer and is used for storing ink so as to provide the printer head with the ink required by printing.

The ink horn is after the printer entering printing state of packing into, and the consumption that accompanies the ink can form the negative pressure in holding up ink reservoir, and the internal and external pressure of ink horn need keep balance can guarantee to print and can not interrupt, and in addition, ink supply system is unusual will appear in the internal and external pressure imbalance of ink horn, and the pressure is too big can lead to lacking the look printing in-process, and the pressure leakage can lead to appearing the colour mixture when printing the stewing to make printing performance unstable, unreliable, print the quality relatively poor.

In order to eliminate the undesirable phenomena of ink overflow and ink inexhaustible but interrupted printing, it is necessary to improve the air pressure balance and sealing performance of the ink cartridge, and currently, the existing ink cartridge is, for example, an ink cartridge (publication: CN203157372U) disclosed in the chinese mainland patent, and the ink cartridge is provided with a deformable chamber connected to an air charging port and a check valve which is closed or opened when the deformable chamber expands or contracts. This kind of structure can clear away the bubble in the printing shower nozzle effectively, satisfies the user demand of printer, then because the easy damage of the diaphragm during operation inflation is easily broken on the deformable cavity, is unfavorable for the high strength to print for ink horn life is shorter, and the ink horn is difficult to control on the deformable cavity in process of production, is not convenient for ink horn overall structure's assembly.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a pressure adjusting unit and an ink cartridge having the same, which address the technical problems in the prior art.

The pressure adjusting unit comprises a face cover, a base and a diaphragm, wherein the face cover is matched with the base and is provided with a variable cavity and an ink cavity, and the diaphragm is assembled at the position of the variable cavity; a communicating part is arranged in the deformable cavity, and the deformable cavity is communicated with the ink cavity or the external atmosphere through the communicating part; and a one-way valve is arranged on a fluid passage connecting the variable cavity and the ink cavity, the diaphragm deforms to close the communicating part, and the one-way valve is opened by changing the pressure in the variable cavity.

In a preferred embodiment of the present invention, the communication portion includes a first flow path hole, and the deformed diaphragm can abut against and block the first flow path hole.

As the utility model discloses a preferred scheme, the intercommunication portion establish to the rigid coupling in the connection projection of base, the diaphragm face be equipped with sealed guide pillar on the terminal surface of connection projection, sealed guide pillar's external diameter is kept away from the direction of diaphragm reduces gradually, sealed guide pillar part insert to connect the downthehole first flow channel of projection, just the diaphragm can drive sealed guide pillar shutoff first flow channel hole.

As the preferred embodiment of the present invention, the pressure adjusting unit includes an elastic element, the elastic element is located in the deformable cavity, one end of the elastic element abuts against the bottom of the base, and the other end of the elastic element abuts against the side end face of the diaphragm, which is close to the connecting boss.

As a preferred embodiment of the present invention, the number of the ink chambers is two, and the two ink chambers are respectively defined as a first ink chamber and a second ink chamber, and the first ink chamber and the second ink chamber are separately disposed; the first ink cavity is communicated with the variable cavity through the communicating part, the variable cavity is communicated with the second ink cavity, and the one-way valve is arranged on a passage through which the variable cavity is communicated with the second ink cavity.

As a preferred scheme of the present invention, the bottom of the base is provided with a second flow channel hole and a connecting hole, the second flow channel hole is disposed at the position of the deformable cavity, and the connecting hole is disposed at the position of the second ink cavity; the base further comprises an outer side part, the outer side part is provided with a first groove, and the first groove is respectively communicated with the second flow passage hole and the connecting hole; wherein the check valve is arranged at the position of the connecting hole.

As a preferred embodiment of the present invention, a third flow channel hole is opened in the bottom of the base, the third flow channel hole is located in the position of the first ink chamber, the base further includes an outer side portion, a second groove is opened in the outer side portion, the second groove respectively with the third flow channel hole and the communicating portion communicate.

As a preferable aspect of the present invention, the pressure adjusting unit further includes a first sealing diaphragm that seals the first groove, the second flow passage hole, and a passage formed by the connection hole.

As a preferable aspect of the present invention, the pressure adjusting unit further includes a second sealing diaphragm, and the second sealing diaphragm seals the second groove, the first flow passage hole, and a passage formed by the third flow passage hole.

As the preferred embodiment of the present invention, the pressure regulating unit further includes an air inlet portion, the air inlet portion is communicated with the first ink chamber and the external atmosphere, respectively.

As a preferable scheme of the present invention, the check valve is a flexible sealing member, and the flexible sealing member includes a connecting rod portion fixedly connected to the connecting hole, and a sealing portion provided at an end portion of one side of the connecting rod portion; the sealing part covers the connecting hole.

As the utility model discloses a preferred scheme, the base is in the position at second ink chamber place is equipped with the connection boss, the connecting hole sets up on the interior concave surface of connection boss, just the sealing pastes and leans on the interior concave surface of connection boss, be used for the shutoff the connecting hole.

The utility model discloses still ask protection an ink horn, detachably installs in ink jet printer, ink jet printer includes the pump, the ink horn includes above-mentioned arbitrary one the pressure regulating unit, the inflation inlet has been seted up on the base, the pump passes through the inflation inlet to but the deformation chamber is aerifyd, and the gas that fills can support and push the diaphragm takes place to deform.

As the utility model discloses an optimal scheme, the face is covered and is equipped with spacing fender platform, the diaphragm have with spacing fender platform complex keeps off platform cooperation portion, the diaphragm can pass through spacing keep off the platform with keep off the cooperation between the platform cooperation portion spacing be in the position in deformable chamber.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model provides a pressure regulating unit and have its ink horn utilizes the diaphragm of deformable intracavity deformation to close deformable intracavity intercommunication, and opens through changing deformable intracavity pressure the check valve to this realization is applied to the play black function of this pressure regulating unit's ink horn, and this diaphragm warp can cooperate with the intercommunication, and realize the spacing that warp to the diaphragm, with this function of protection is played to the diaphragm, has the effect that prevents the diaphragm and damage because of the inflation transition, thereby ink horn life has been improved, the diaphragm can correspond the intercommunication and assemble in the position in deformable chamber simultaneously, has the effect of the diaphragm assembly of being convenient for.

Drawings

Fig. 1 is an exploded schematic view of an ink cartridge according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a base in the ink cartridge of fig. 1.

FIG. 3 is a schematic perspective view of the ink cartridge of FIG. 1 from another perspective.

FIG. 4 is a schematic perspective view of another perspective view of a membrane in the ink cartridge of FIG. 1.

FIG. 5 is a schematic perspective view of the ink cartridge of FIG. 1 with another view of the top cover.

Fig. 6 is a schematic perspective view of the check valve of the ink cartridge of fig. 1 from another perspective.

10, a base; 11. an inflation inlet; 12. an ink outlet; 13. an air intake portion; 20. a face cover; 21. a limiting stop table; 211. a vent hole; 30. a membrane; 31. sealing the guide post; 32. a stopper fitting portion; 40. a communicating portion; 41. a first flow channel hole; 42. a third flow passage hole; 43. a second flow channel hole; 44. connecting holes; 50. an elastic element; 60. a one-way valve; 61. a connecting rod part; 62. a sealing part; 63. a limiting bulge; 70. connecting the bosses; 71. an inner concave surface; 72. a retainer ring; 100. an outer side portion; 110. a first groove; 120. a second groove; 101. a first ink chamber; 102. a deformable cavity; 103. a second ink chamber.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1-6, the ink cartridge of the present invention is detachably mounted to an inkjet printer (not shown), the inkjet printer including an inflator (not shown) for supplying ink to a printing head of the inkjet printer, wherein the ink cartridge includes a pressure adjustment unit.

The utility model discloses a pressure regulating unit is including face lid 10, base 20 and diaphragm 30, and face lid and base cooperation are formed with deformable chamber 102 and ink chamber, and diaphragm 30 retrains in deformable chamber 102.

The utility model discloses in, be equipped with the intercommunication portion 40 in the variable chamber 102, variable chamber 102 communicates ink chamber or outside atmosphere through intercommunication portion 40, is equipped with check valve 60 on the passageway that variable chamber 102 is connected with the ink chamber, and the diaphragm takes place to deform and can close intercommunication portion 40 to open check valve 60 through changing variable chamber 102 internal pressure. It should be noted that when the diaphragm 30 deforms, the deformable chamber 102 is open to the ink chamber or the external atmosphere, and the check valve 60 is closed or opened according to the comparison result between the negative pressure generated by the consumption of ink and the pressure required for opening the check valve 60.

Specifically, the base 10 is provided with an inflation port 11, and the inflator inflates air into the deformable cavity 102 through the inflation port 11, and the inflated air can push the diaphragm 30 to deform. It should be noted that, the base 10 is provided with an ink outlet 12 communicating with the ink chamber, and the ink in the ink chamber can flow to the print head through the ink outlet 12, so as to supply ink to the print head from the ink cartridge applied to the pressure adjusting unit.

Wherein, the communicating part 40 of the utility model is arranged as a connecting convex column, and a first flow passage hole 41 communicated with the ink cavity is arranged on the connecting convex column; when the inflation inlet 11 inflates the deformable cavity 102, the inflated gas can push the membrane 30 to abut against the connecting convex column and block the first flow passage hole 41, so as to close the communication part 40.

It can be understood that the diaphragm 30 receives to fill to pushing away the effect to the gaseous of deformable chamber 102, can cooperate and realize carrying on spacingly to the deformation of diaphragm 30 with connecting the projection, make the utility model discloses the deformation volume that the diaphragm 30 received gaseous promotion to take place on the ink horn is little, and then has the effect of playing protection diaphragm 30.

Further, the diaphragm 30 is provided with a sealing guide pillar 31 on an end surface facing the connecting convex pillar, an outer diameter of the sealing guide pillar 31 is gradually reduced from a direction away from the diaphragm 30, the sealing guide pillar 31 is partially inserted into the first flow passage hole 41 of the connecting convex pillar, and the diaphragm 30 can drive the sealing guide pillar 31 to block the first flow passage hole 41. That is, the sealing guide pillar 31 on the membrane 30 for the ink cartridge of the present invention blocks the first flow channel hole 41 of the connecting convex pillar, so as to ensure the sealing effect when the membrane 30 is matched with the connecting convex pillar and blocks the first flow channel hole 41; on the other hand, the utility model discloses a sealed guide pillar 31 part inserts in first flow channel hole 41 to and leave the clearance between the pore wall of first flow channel hole 41, in order to supply the ink in the first ink chamber 101 to lead to in the deformable chamber 102 through first flow channel hole 41, and sealed guide pillar 31 part inserts in the first flow channel hole 41 to connect the projection, can play the effect of guide to diaphragm 30 by gas drive's motion, further ensures the shutoff effect to first flow channel hole 41.

Wherein, the utility model discloses a pressure regulating unit includes elastic element 50, and elastic element 50 is located deformable cavity 102, and elastic element 50 one end butt is in the bottom of base 10, and elastic element 50 other end butt is in a side end face that is close to the diaphragm 30 of connecting the projection. When the gas is not introduced into the gas charging port 11, the diaphragm 30 is pushed by the elastic element 50 to be separated from the connecting boss and reset. Preferably, the elastic element 50 of the present invention is configured as a spring.

The utility model discloses in, be equipped with spacing fender platform 21 on the face lid 20, diaphragm 30 has and keeps off platform cooperation portion 32 with spacing fender platform 21 complex, and diaphragm 30 can keep off the platform 21 through spacing and keep off the spacing position in the variable chamber 102 of cooperation between the platform cooperation portion 32. That is, the diaphragm 30 of the present invention is fixedly assembled at the position of the deformable cavity 102 by the face cover 20, so as to facilitate the assembly of the diaphragm 30 at the position of the deformable cavity 102 on the base 10.

The limiting blocking table 21 is provided with a vent hole 211, the vent hole 211 is communicated with the inflation inlet 11, so that when the inflation inlet 11 inflates the deformable cavity 102, the gas introduced from the inflation inlet 11 can enter the part of the diaphragm 30 located in the limiting blocking table 21, and the diaphragm 30 can be pushed.

In the pressure adjustment unit disclosed in the first embodiment of the present invention, the number of the ink chambers is two, and the two ink chambers are respectively defined as a first ink chamber 101 and a second ink chamber 103, and the first ink chamber 101 and the second ink chamber 103 are separated from each other; the first ink chamber 101 communicates with the variable chamber 102 through the communicating portion 40, the variable chamber 102 communicates with the second ink chamber 103, and the check valve 60 is provided on a passage where the variable chamber 102 communicates with the second ink chamber 103. That is, the deformable chamber 102 in the pressure adjustment unit of the present embodiment is communicated with the ink in the first ink chamber 101 through the communication part 40, so that the ink in the first ink chamber 101 is firstly introduced into the deformable chamber 102 through the communication part 40, then is introduced into the second ink chamber 103 from the deformable chamber 102 through the one-way valve 60, and finally is discharged by the ink in the second ink chamber 103.

Specifically, the bottom of the base 10 is provided with a second flow channel hole 43 and a connecting hole 44, the second flow channel hole 43 is arranged at the position of the deformable cavity 102, and the connecting hole 44 is arranged at the position of the second ink cavity 103; the base 10 further includes an outer portion 100, the outer portion 100 defines a first groove 110, and the first groove 110 is respectively communicated with the second channel hole 43 and the connecting hole 44. Wherein a check valve 60 is provided at the position of the connection hole 44. That is, the variable chamber 102 and the second ink chamber 103 of the present embodiment communicate with each other through a passage formed by the second flow path hole 43, the first groove 110, and the connecting hole 44 communicating with each other.

The pressure regulating unit of this embodiment further includes a first sealing membrane (not shown) that seals a passage formed by the first groove 110, the second flow passage hole 43, and the connecting hole 44, so that the passage for communicating the variable chamber 102 and the second ink chamber 103 in this embodiment is a relatively sealed passage. It should be understood that the first groove 110 is not limited to be disposed on the outer side portion 100 of the base 10, and those skilled in the art can dispose the first groove 110 on the base 10 on the opposite side of the outer side portion 100 according to the use requirement.

Similarly, the bottom of the base 10 is provided with a third flow channel hole 42, the third flow channel hole 42 is disposed at the position of the first ink chamber 101, the outer side portion 100 of the base 10 is provided with a second groove 120, and the second groove 120 is respectively communicated with the third flow channel hole 42 and the first flow channel hole 41 of the communicating portion 40, so as to realize the communication between the deformable chamber 102 and the first ink chamber 101. Accordingly, the pressure regulating unit of the present embodiment further includes a second sealing diaphragm (not shown) that seals the passage formed by the second groove 120, the first flow passage hole 41, and the third flow passage hole 42.

In the present embodiment, the check valve 60 is provided as a flexible seal member including a connecting rod portion 61 fixed at the position of the connecting hole 44, and a seal portion 62 provided on one side end portion of the connecting rod portion 61; the sealing part 62 covers the connecting hole 44, so that the connecting hole 44 is sealed, and when the pressure of the ink acting on the sealing part 62 is greater than the acting force required when the sealing part 62 deforms, the ink can drive the sealing part 62 to bend and realize the conduction with the second ink cavity 103.

Wherein, the bottom position of the second ink cavity 103 is provided with a connecting boss 70, the connecting hole 44 is arranged on the inner concave surface 71 of the connecting boss 70, and the sealing part 62 is attached to the inner concave surface 71 of the connecting boss 70 for sealing the connecting hole 44. Thereby facilitating the fitting of the check valve 60 to the connecting hole 44 of the second ink chamber 103. The upper sealing portion 62 of the flexible sealing member of the present embodiment may have a circular straight plate-shaped structure according to the use requirement.

Further, the inner concave surface 71 of the coupling boss 70 is provided with a retainer ring 72 at the periphery of the coupling hole 44, and the seal portion 62 abuts against the retainer ring 72, thereby ensuring the sealing effect of the seal portion 62 of the check valve 60 fitted to the coupling boss 70 against the coupling hole 44.

The connecting rod portion 61 penetrates through the inner concave surface 71 of the connecting boss 70, and a limiting protrusion 63 is connected to a portion, penetrating through the inner concave surface 71, of the connecting rod portion 61 and used for limiting the flexible sealing element on the inner concave surface 71 of the connecting boss 70.

It should be noted that the pressure adjustment unit of the present embodiment further includes an air inlet 13, and the air inlet 13 is respectively communicated with the first ink chamber 101 and the external atmosphere, so that when the ink in the base 10 is consumed, a negative pressure is formed in the base 10, and the external air is introduced into the base 10 through the air inlet 13 to balance the air pressure in the base 10. In the pressure adjusting unit of the present embodiment, the air inlet of the air inlet 13 may be disposed adjacent to the face cover 20, and a sponge (not shown) may be disposed in the air inlet to block the ink in the base 10 from leaking out through the air guide opening 13.

In the pressure regulating unit disclosed in the second embodiment of the present invention, the number of the ink chambers is 1, and the deformable chamber 102 is communicated with the external atmosphere through the communicating portion 40, so that the negative pressure generated by the ink chambers along with the consumption of the ink can be introduced through the communicating portion 40 to balance the air pressure in the base 10; the structure and operation principle of the check valve 60 may be the same as those of the first embodiment of the present invention, and will not be described herein.

To sum up, the utility model provides a pressure regulating unit and have its ink horn utilizes the diaphragm of deformable intracavity deformation to close deformable intracavity intercommunication, and through changing deformable intracavity pressure is opened the check valve to this realization is applied to the play black function of this pressure regulating unit's ink horn, and this diaphragm warp can cooperate with the intercommunication, and realize the spacing that warp the diaphragm, play the function of protection with this to the diaphragm, have the effect that prevents the diaphragm and damage because of the inflation transition, thereby improved ink horn life, the diaphragm can correspond the intercommunication simultaneously and assemble in the position of deformable chamber, has the effect of the diaphragm assembly of being convenient for.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A pressure regulating unit comprises a face cover, a base and a membrane, wherein the face cover is matched with the base and forms a variable cavity and an ink cavity, and the membrane is assembled at the position of the variable cavity; the method is characterized in that: a communicating part is arranged in the deformable cavity, and the deformable cavity is communicated with the ink cavity or the external atmosphere through the communicating part; and a one-way valve is arranged on a fluid passage connecting the variable cavity and the ink cavity, the diaphragm deforms to close the communicating part, and the one-way valve is opened by changing the pressure in the variable cavity.

2. The pressure regulating unit of claim 1, wherein: the communication portion includes a first flow path hole, and the deformed diaphragm is capable of abutting against the first flow path hole and closing the first flow path hole.

3. The pressure regulating unit of claim 2, wherein: the communication part is a connecting convex column fixedly connected to the base, a sealing guide column is arranged on the end face, facing the connecting convex column, of the diaphragm, the outer diameter of the sealing guide column is gradually reduced from the direction far away from the diaphragm, the sealing guide column is partially inserted into a first flow passage hole of the connecting convex column, and the diaphragm can drive the sealing guide column to block the first flow passage hole.

4. The pressure regulating unit of claim 3, wherein: the pressure adjusting unit comprises an elastic element, the elastic element is located in the deformable cavity, one end of the elastic element abuts against the bottom of the base, and the other end of the elastic element abuts against one side end face of the diaphragm close to the connecting convex column.

5. The pressure regulating unit of claim 2, wherein: the number of the ink cavities is two, the two ink cavities are respectively defined as a first ink cavity and a second ink cavity, and the first ink cavity and the second ink cavity are arranged in a separated mode; the first ink cavity is communicated with the variable cavity through the communicating part, the variable cavity is communicated with the second ink cavity, and the one-way valve is arranged on a passage through which the variable cavity is communicated with the second ink cavity.

6. The pressure regulating unit of claim 5, wherein: a second flow passage hole and a connecting hole are formed in the bottom of the base, the second flow passage hole is formed in the position where the deformable cavity is located, and the connecting hole is formed in the position where the second ink cavity is located; the base further comprises an outer side part, the outer side part is provided with a first groove, and the first groove is respectively communicated with the second flow passage hole and the connecting hole; wherein the check valve is arranged at the position of the connecting hole.

7. The pressure regulating unit of claim 6, wherein: the bottom of the base is provided with a third flow channel hole, the third flow channel hole is arranged at the position of the first ink cavity, the base further comprises an outer side portion, the outer side portion is provided with a second groove, and the second groove is communicated with the communication portion through the third flow channel hole respectively.

8. The pressure regulating unit of claim 6, wherein: the pressure adjusting unit further includes a first sealing diaphragm sealing a passage formed by the first groove, the second flow passage hole, and the connection hole.

9. The pressure regulating unit of claim 7, wherein: the pressure adjustment unit further includes a second sealing diaphragm sealing a passage formed by the second groove, the first flow passage hole, and the third flow passage hole.

10. Pressure regulating unit according to any of claims 5-9, characterized in that: the pressure regulating unit further comprises an air inlet part, and the air inlet part is communicated with the first ink cavity and the external atmosphere respectively.

11. Pressure regulating unit according to any of claims 6-9, characterized in that: the check valve is a flexible sealing element which comprises a connecting rod part fixedly connected to the connecting hole and a sealing part arranged on one side end part of the connecting rod part; the sealing part covers the connecting hole.

12. The pressure regulating unit of claim 11, wherein: the base is arranged at the position of the second ink cavity and provided with a connecting boss, the connecting hole is formed in the inner concave surface of the connecting boss, and the sealing part is attached to the inner concave surface of the connecting boss and used for plugging the connecting hole.

13. An ink horn, detachably installs in ink jet printer, ink jet printer includes the pump, its characterized in that: the ink box comprises the pressure adjusting unit as claimed in any one of claims 1 to 12, wherein an inflation inlet is formed on the base, the inflation pump inflates the deformable cavity through the inflation inlet, and the inflated gas can push the diaphragm to deform.

14. The ink cartridge according to claim 13, wherein: the face cover is provided with a limiting blocking platform, the diaphragm is provided with a blocking platform matching part matched with the limiting blocking platform, and the diaphragm can be matched with the blocking platform matching part through the limiting blocking platform and is limited at the position of the deformable cavity.