CN218367038U

CN218367038U - Ink box

Info

Publication number: CN218367038U
Application number: CN202222418464.7U
Authority: CN
Inventors: 聂名扬
Original assignee: Jiangxi Yibo Electronic Technology Co Ltd
Current assignee: Jiangxi Yibo Electronic Technology Co Ltd
Priority date: 2021-09-14
Filing date: 2022-09-13
Publication date: 2023-01-24
Anticipated expiration: 2032-09-13

Abstract

The utility model relates to an ink jet printer consumptive material field provides an ink horn, and detachably installs in the printer, the ink horn includes: a box body; an ink chamber formed in the cartridge body, the ink chamber for containing ink; the ink outlet is arranged on the side surface of the box body and is used for being connected with a printing head in a printer; an inflation port fluidly connectable to an air pump of the printer; the variable cavity is arranged in the ink cavity and is connected with the inflation port; a duckbill valve disposed in the ink chamber; the duckbill valve is provided with a slit configured to close when the deformable chamber is expanded and to open as ink is consumed when the deformable chamber is contracted. The air inlet structure is simple, the occupied space is small, and the ink storage space is enlarged.

Description

Ink box

Technical Field

The utility model relates to an ink jet printer consumptive material field especially relates to an ink horn.

Background

The printer is used as common office equipment, and great convenience is provided for modern office. Conventional printers include, mainly, ink jet printers that form characters or patterns to be printed on a recording medium such as paper by mounting an ink cartridge containing ink on a carriage. The ink cartridge must have airtightness as a container for ink, and in addition, the ink cartridge serves as a printer accessory, and the sealing member is also convenient for a user to remove so that the ink cartridge can be assembled into a printer for use.

In the prior art, in order to eliminate the bad phenomena that ink overflows and ink is not exhausted but printing is interrupted, the air pressure balance performance and the sealing performance of the ink box need to be improved, the existing ink box is provided with a variable cavity connected with an inflation inlet and a one-way valve which is closed or opened when the variable cavity expands or contracts, bubbles in a printing nozzle can be effectively removed by the structure, but the one-way valve occupies a large amount of space in an ink storage cavity, the structure of the one-way valve is complex, and air leakage or ink leakage caused by faults easily occur.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned defect among the prior art, the utility model discloses a realize through following technical scheme:

an ink cartridge detachably mountable in a printer, the ink cartridge comprising:

a box body;

an ink chamber formed in the cartridge body, the ink chamber for containing ink;

the ink outlet is arranged on the side surface of the box body and is used for being connected with a printing head in a printer;

an inflation port fluidly connectable to an air pump of the printer;

the variable cavity is arranged in the ink cavity and is connected with the inflation inlet;

a duckbill valve disposed in the ink chamber;

the duckbill valve is provided with a slit configured to close when the deformable chamber expands and to open as ink is consumed when the deformable chamber contracts.

Further, the duckbill valve comprises a fixing part and an opening and closing part; the fixing part, the one end of fixing part is fixed on the box body, the portion of opening and shutting is from the extension of the fixing part other end forms.

Further, the opening and closing part comprises a first wall, a second wall and a top, the first wall and the second wall extend from the other end of the fixing part to the top, and in the process of extending from the fixing part to the top, the distance between the first wall and the second wall is gradually reduced.

Further, the roof is configured as a wall supported between the first wall and the second wall, and the slit is configured to be cut out at the roof.

Further, the extending direction of the first wall and the extending direction of the second wall form an included angle, and the included angle ranges from 40 degrees to 80 degrees.

Furthermore, the box body is provided with a positioning column in an inward protruding mode, the fixing portion is fixed to the positioning column, a flange is arranged on the periphery of the positioning column, and the flange is fixed to the inner wall of the fixing portion in an interference fit mode.

Furthermore, a through hole is formed in the middle of the positioning column, one end of the through hole is communicated with the slit, and the other end of the through hole is communicated with the air outside the box body.

Compared with the prior art, the utility model provides an ink horn is connected the ink horn outside air through the duckbilled valve that sets up in the ink chamber and is admitted air, and the slit of duckbilled valve is closed when the deformable chamber inflation, opens along with ink consumption when the deformable chamber contracts, maintains the pressure balance of ink horn, and air inlet structure is simple, and the space that occupies is little, has increased and has stored up the ink space.

Description of the drawings:

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

FIG. 2 is a partially exploded schematic view of the ink cartridge of the present invention;

FIG. 3 is a partially exploded view of an alternative aspect of the ink cartridge of the present invention;

FIG. 4 is a schematic cross-sectional view of the ink cartridge of the present invention in the longitudinal direction;

FIG. 5 is a schematic perspective view of a duckbill valve in the ink cartridge of the present invention;

figure 6 is a schematic side view of a duckbill valve in the ink cartridge of the present invention;

figure 7 is a schematic cross-sectional view of a duckbill valve in the ink cartridge of the present invention.

The specific implementation mode is as follows:

in order to make the purpose of the embodiment of the present invention, the technical solution and the technical effect are clearer, and the following description will be made in conjunction with the accompanying drawings to clearly and completely describe the technical solution of the developing cartridge of the present invention. It should be understood that the described embodiment is only a preferred embodiment of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts are included in the protection scope of the present invention.

As shown in fig. 1 and 2, the present invention provides an ink cartridge, which comprises a cartridge body 1 having an opening, a face cover 2, a negative pressure member 3, a duckbill valve 4, an ink outlet rubber plug 5, and an ink absorbing sponge 6.

As shown in fig. 2, the case 1 is constructed in a substantially rectangular parallelepiped box-like structure, and the face cover 2 is heat-pressed and covers the opening of the case 1 and seals the opening. The inner space of the cartridge body 1 is formed with an ink chamber 101 for containing ink, and is provided with the above-mentioned negative pressure member 3 and the duckbill valve 4, wherein the ink chamber 101 surrounds the negative pressure member 3 and the duckbill valve 4, and when the ink chamber 101 is filled with ink, the ink is disposed around the negative pressure member 3 and the duckbill valve 4. The negative pressure member 3 comprises a deformable cavity 31 and an elastic element 32, in this embodiment, a circle of convex ribs 33 are arranged on the bottom wall of the box body 1, a sealing film 34 is hot-pressed on the convex ribs 33 and seals the space formed by the convex ribs 33 to form the deformable cavity 31, the sealing film 34 has certain elasticity, the elastic element 32 is a compression spring, one end of the spring is fixed on the face cover 2, and the other end of the spring abuts against the outer surface of the sealing film 34 and compresses the deformable cavity 31.

As shown in fig. 3, a blowing hole 11 and an ink outlet 12 are provided on the front surface of the cartridge body 1. The inflation port 11 communicates with the deformable chamber 31 through an inflation channel provided in the cartridge body 1, and the inflation port 11 may be connected to an air pump through an inflation needle in the cartridge receiving member, whereby the air pump may inflate the deformable chamber 31 to expand the deformable chamber 31 and pressurize the ink in the ink chamber 101. The ink outlet 12 is communicated with the ink chamber 101 and is connected with an ink needle in the cartridge receiving member to deliver ink to the print head, the ink outlet plug 5 is arranged in the ink outlet 12 and seals the ink outlet 12, and when the ink cartridge is installed in the cartridge receiving member, the ink outlet 12 is connected with the ink needle through the ink outlet plug 5.

As shown in fig. 4, an ink absorption sponge accommodating chamber 13 and an air guide channel 14 are concavely arranged on the outer side of the bottom wall of the box body 1, the ink absorption sponge 6 is arranged in the ink absorption sponge accommodating chamber 13, one end of the air guide channel 14 is connected with the ink absorption sponge accommodating chamber 13, the other end of the air guide channel 14 can be connected with the ink chamber 101 through a connecting hole 15, an air guide hole 16 is arranged on the upper surface of the box body 1, the air guide hole 16 is communicated with the ink absorption sponge accommodating chamber 13 through a closed channel, the connecting hole 15, the air guide channel 14 and the ink absorption sponge accommodating chamber 13 are sealed by hot pressing of the valve film 7, so that an air inlet path can be formed, wherein the air guide hole 16, the ink absorption sponge accommodating chamber 13, the air guide channel 14, the connecting hole 15 and the ink chamber 101 are sequentially connected. The air guide membrane is hot-press sealed on the air guide hole 16.

As shown in fig. 4-7, duckbill valve 4 is disposed in ink chamber 101, and duckbill valve 4 communicates with air vent 16, and one-way air intake to ink chamber 101 maintains pressure balance in ink chamber 101. The duckbill valve 4 is made of an elastic member (silicone rubber) mainly composed of silicon, specifically, silicone rubber, and the duckbill valve 4 can be elastically deformed. The duckbill valve 4 comprises a fixing part 41 and an opening and closing part 42, the fixing part 41 and the opening and closing part 42 are sequentially arranged in the flowing direction of the gas in the duckbill valve 4, the fixing part 41 is constructed into a circular pipeline structure, one end of the fixing part is fixed on a positioning column 17 which is arranged on the inner side of the bottom wall in an inward protruding mode, and the other end of the fixing part 41 is connected with the opening and closing part 42. In this embodiment, the diameter of the through hole 171 is larger than the diameter of the connection hole 15, the periphery of the positioning column 17 is further provided with a flange 172, the flange 172 is fixed to the inner wall of the fixing portion 41 in an interference fit manner, and the fixing portion 41 is tightly connected to the positioning column 17, so that the fixing portion is in a sealed state with respect to the ink chamber 101. The opening and closing part 42 includes a first wall 421, a second wall 422, and a top 423; the first wall 421 and the second wall 422 extend from the other end of the fixing portion 41 toward the top 423, the first wall 421 and the second wall 422 being elastically deformable; the top 423 is configured as a wall portion supported between the first wall 421 and the second wall 422, and a slit 424 is provided on the top 423, the slit 424 being configured to be cut-formed in the top 423. The ink chamber 101 can communicate with the outside air through the duckbill valve 4, the outside air is communicated to the ink chamber 101 when the slit 424 is opened, and the communication of the ink chamber 101 with the outside is disconnected when the slit 424 is closed. The first wall 421 and the second wall 422 are disposed opposite to each other and spaced apart from each other, and when the first wall 421 and the second wall 422 extend from the fixing portion 41 to the top portion 423, a distance between the first wall 421 and the second wall 422 becomes gradually shorter, an included angle θ is formed between the first wall 421 and the second wall 422, and the included angle θ is in a range of 40 degrees to 80 degrees. Further, the first wall 421 and the second wall 422 are symmetrically arranged with respect to the center line of the duckbill valve 4, a first transition plane 43 is connected between the first wall 421 and the fixing portion 41, and a second transition plane 44 is connected between the second wall 422 and the fixing portion 41, that is, the maximum distance between the first wall 421 and the second wall 422 is smaller than the diameter of the fixing portion 41.

When printing is needed, the air guide film is firstly torn off, the ink box is installed in the box receiving component, and the printing head punctures the air inflation port 11 and the ink outlet rubber plug 5. When the printer is installed, the printing head blows air to the deformable cavity 31 through the air inflation opening 11 connected with the air inflation needle in the box receiving component, so that the sealing film 34 expands, the elastic piece 32 is compressed, at the moment, the space of the ink cavity 101 becomes small, the pressure in the ink cavity 101 becomes large, ink in the ink cavity 101 is extruded out and is conveyed to the printing head through the ink outlet 12, meanwhile, the first wall 421 and the second wall 422 of the duckbill valve 4 are deformed by the internal pressure of the ink cavity 101, the slit 424 of the opening and closing part 42 of the duckbill valve 4 is closed, namely the duckbill valve 4 is closed, and the ink cannot flow out of the box body 1 through the duckbill valve 4; when the blowing stops, the spring returns to deform to compress the sealing film 34, the sealing film 34 contracts, the space of the ink cavity 101 becomes larger, the pressure in the ink cavity 101 becomes smaller, and at the moment, the pressure in the ink cavity 101 is smaller than the external air pressure, the first wall 421 and the second wall 422 deform by the external air pressure of the ink cavity 101, so that the slit 424 of the opening and closing part 42 of the duckbill valve 4 is opened, namely, the duckbill valve 4 is opened, the external air enters the ink cavity 101 through the air guide hole 16, the gap of the ink absorption sponge 6, the air guide channel 14, the connecting hole 15, the through hole of the fixing part 41 and the slit 424 of the opening and closing part 42, and the internal and external pressures of the ink box are balanced. During printing, as ink is consumed, the pressure in the ink chamber 101 changes, and the duckbill valve 4 repeatedly opens and closes to maintain a pressure balance between the inside and outside of the ink cartridge.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ink cartridge detachably mountable in a printer, the ink cartridge comprising:

a case body;

an inflation port fluidly connectable to an air pump of the printer;

a duckbill valve disposed in the ink chamber;

characterised in that the duckbill valve is provided with a slit configured to close when the deformable chamber is expanded and to open as ink is consumed when the deformable chamber is contracted.

2. The ink cartridge as in claim 1, wherein the duckbill valve comprises a fixed portion and an openable portion; the fixing part, the one end of fixing part is fixed on the box body, the portion of opening and shutting is from the extension of the fixing part other end forms.

3. The ink cartridge as claimed in claim 2, wherein the opening and closing part includes a first wall, a second wall, and a top, the first wall and the second wall extend from the other end of the fixing part toward the top, and a distance between the first wall and the second wall gradually decreases in a process of extending from the fixing part toward the top.

4. The ink cartridge of claim 3, wherein the roof is configured to support a wall portion between the first wall and the second wall, the slit being configured to be formed in the roof cutout.

5. The ink cartridge as in claim 2, wherein a direction of extension of said first wall and a direction of extension of said second wall form an included angle, said included angle being in a range of 40 ° to 80 °.

6. The ink cartridge as claimed in claim 2, wherein the cartridge body has a positioning post protruding inward, the fixing portion is fixed to the positioning post, and a flange is provided on an outer periphery of the positioning post and is fixed to an inner wall of the fixing portion by interference fit.

7. The ink box as claimed in claim 6, wherein the locating post has a through hole in the middle, one end of the through hole is connected to the slit, and the other end of the through hole is connected to the outside air of the box.