CN211942584U

CN211942584U - Valve assembly and ink cartridge having the same

Info

Publication number: CN211942584U
Application number: CN201922189029.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Hangzhou Chipjet Technology Co Ltd
Current assignee: Hangzhou Chipjet Technology Co Ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-11-17
Anticipated expiration: 2029-12-06
Also published as: WO2021110159A1

Abstract

The utility model relates to a valve module, it includes: a valve body unit having a valve cavity therein; the sealing unit is movably arranged in the valve cavity and divides the valve cavity into a first cavity and a second cavity; the inner side wall of the valve cavity is provided with a transmission passage, and the sealing unit can move relative to the inner side wall of the valve cavity so that the transmission passage can selectively communicate the first cavity and the second cavity. The utility model discloses still relate to an ink horn with above-mentioned valve module, including casing and foretell valve module, seted up on the casing and aerifyd the hole and go out the china ink hole, the valve module is located in the casing and can control and aerify the intercommunication or the disconnection between hole and the china ink hole. The utility model has the advantages that: the stable outflow of realization ink that can be better, it is better to print the effect to make the ink horn have good atmospheric pressure balance performance and sealing performance. In addition, the volume occupied by the valve assembly in the ink cartridge is small, and thus the ink cartridge has a large ink storage volume.

Description

Valve assembly and ink cartridge having the same

Technical Field

The utility model relates to a printing apparatus technical field especially relates to a valve module and have its ink horn.

Background

Along with the development of technology, the printer becomes the essential equipment of enterprise's official working, and then drives the flourishing development of printing consumables, and the printing consumables is diversified, for example ink horn, selenium drum etc.. 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 bad phenomena of ink overflow and incomplete printing interruption of ink, 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 along with the expansion or contraction of the variable cavity, the variable cavity and the one-way valve are independently arranged, so that the ink box is complex in structure, the variable cavity and the one-way valve occupy more space in an ink storage cavity, in addition, the variable cavity is not beneficial to high-strength printing, and the service life of the ink box is short.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first technical problem that will solve provides a valve module that can improve interior air pressure balance performance of ink horn and sealing performance to above-mentioned prior art current situation.

The utility model discloses the second technical problem that will solve provides a simple structure, receives the life-span longer to above-mentioned prior art current situation, can improve the ink horn of interior air pressure balance performance of ink horn and sealing performance simultaneously.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does:

a valve assembly, comprising:

a valve body unit having a valve cavity therein;

the sealing unit is movably arranged in the valve cavity and divides the valve cavity into a first cavity and a second cavity;

the inner side wall of the valve cavity is provided with a transmission passage, and the sealing unit can move relative to the inner side wall of the valve cavity so as to enable the transmission passage to be selectively communicated with the first cavity and/or the second cavity.

In one embodiment, the sealing unit includes a sealing member and an elastic member, the sealing member is movably disposed in the valve cavity, the elastic member is accommodated in the second cavity, one end of the elastic member abuts against the bottom of the second cavity, and the other end of the elastic member abuts against the sealing member.

In one embodiment, the sealing element comprises a sealing body and a sealing ring, wherein the sealing ring is arranged on the outer periphery of the sealing body in a surrounding mode and is in sealing contact with the inner side wall of the valve cavity.

In one embodiment, the peripheral side outer wall of the sealing main body is provided with an installation part protruding outwards, and the sealing ring is sleeved on the installation part in a sealing mode.

In one embodiment, the thickness of the sealing ring along the moving direction of the sealing unit is smaller than the length of the transmission channel along the moving direction of the sealing unit, and the extension length of the transmission channel along the moving direction of the sealing unit is smaller than the moving distance of the sealing ring along the inner side wall of the valve cavity.

In one embodiment, the sealing ring further comprises a sealing convex strip, and the sealing convex strip is arranged on the outer peripheral side of the sealing ring in a protruding mode and is in sealing contact with the inner side wall of the valve cavity.

In one embodiment, the number of the sealing convex strips is more than or equal to one, and the sealing convex strips are arranged on the outer periphery side of the sealing ring in a protruding mode along the moving direction of the sealing element;

the conveying channel comprises an upper dead point and a lower dead point, the sealing raised line is positioned between the upper dead point and the lower dead point, the conveying channel is communicated with the first cavity and the second cavity, the sealing raised line is positioned on the upper side of the upper dead point or positioned on the lower side of the lower dead point, and the sealing element is disconnected with the communication between the first cavity and the second cavity.

In one embodiment, the valve body unit comprises a valve cover, the inner surface of the valve cover is convexly provided with a positioning column, the side surface of the sealing main body facing the first cavity is provided with a concave part, and the positioning column can be matched with the concave part to limit the movement range of the sealing element along the inner side wall of the valve cavity.

In one embodiment, the sealing body has a first positioning portion protruding toward the surface of the second cavity, a second positioning portion protruding toward the bottom of the second cavity, and one end of the elastic member is sleeved on the first positioning portion and the other end thereof is sleeved on the second positioning portion.

In one embodiment, the first positioning portion is disposed corresponding to the recess, and the recess extends partially to the first positioning portion; the outer side wall of the second positioning part is provided with a limiting bulge, and the limiting bulge is in limiting fit with the elastic part.

In one embodiment, a transmission passage is arranged along the circumferential direction of the inner wall of the valve cavity or a plurality of transmission passages are arranged at intervals;

or, a circle of transmission channel is formed by sinking along the circumferential direction of the inner wall of the valve cavity and towards the direction deviating from the inner wall of the valve cavity.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does:

an ink box comprises a shell and the valve component, wherein the shell is provided with an air inflation hole and an ink outlet hole, and at least part of the valve component is arranged in the shell and can control the connection or disconnection between the air inflation hole and the ink outlet hole.

In one embodiment, the inflation hole is communicated with the first cavity, the ink outlet hole is communicated with the second cavity, and an inflation channel is arranged between the inflation hole and the first cavity.

In one embodiment, an ink storage cavity is formed in the shell, a partition plate is arranged in the shell and divides the ink storage cavity into a first ink storage cavity and a second ink storage cavity; the first ink storage cavity is communicated with the ink outlet hole, and the partition plate is provided with a communication hole for communicating the first ink storage cavity with the second ink storage cavity.

In one embodiment, a through hole is formed in a sidewall of the second chamber, and the through hole is used for communicating the second chamber with the first ink storage chamber.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a valve module is through setting up sealed unit and transmission path, and the inside wall motion of sealed unit along the valve pocket to the selectivity makes the first chamber of transmission path intercommunication and/or second chamber, so that the second chamber keeps certain negative pressure at the printing in-process, and then guarantees to stabilize out the china ink, and this kind of realization ink that adjusts atmospheric pressure balance can be better is stable to flow out, and it is better to print the effect, makes the ink horn have good atmospheric pressure balance performance and sealing performance. Furthermore, the utility model provides an ink box compact structure, it is longer to receive the life-span, and the shared volume of valve unit spare is less in the ink horn, therefore the ink horn has great storage ink volume, and the ink horn has good atmospheric pressure balance performance and sealing performance.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of an ink cartridge provided by the present invention;

FIG. 2 is a schematic perspective view of the ink cartridge of FIG. 1 without the cover plate;

FIG. 3 is an exploded view of the ink cartridge of FIG. 1;

fig. 4 is a schematic structural diagram of another embodiment of a transmission channel provided by the present invention;

FIG. 5 is a schematic cross-sectional view of a first embodiment of a valve assembly in an ink cartridge according to the present invention, showing a gas passage in a closed state;

FIG. 6 is an enlarged partial schematic view of the ink cartridge A of FIG. 5;

FIG. 7 is a cross-sectional view of a second embodiment of a valve assembly in an ink cartridge according to the present invention, showing a gas passage in a closed state;

FIG. 8 is an enlarged partial view of the ink cartridge B of FIG. 7;

FIG. 9 is a schematic cross-sectional view of the gas passages of the second embodiment of the valve assembly of FIG. 7 in a communicating state;

FIG. 10 is a cross-sectional view of the gas passage in another closed state of the second embodiment of the valve assembly of FIG. 7;

FIG. 11 is a front view of the seal of FIG. 5;

FIG. 12 is a perspective view of the seal of FIG. 7;

fig. 13 is a schematic cross-sectional view of the seal of fig. 12.

Reference numerals:

the valve assembly-100, the valve body unit 100a, the valve cavity 101, the first cavity 101a, the second cavity 101b, the transmission channel 102, the valve cover-110, the inflation channel-111, the positioning column-112, the valve seat-120, the through hole-121, the second positioning part-122, the limiting bulge-122 a, the sealing unit-130, the sealing element-131, the sealing main body-131 a and the sealing ring-131 b, mounting portion-1311, recessed portion-1312, first positioning portion-1313, sealing convex strip-131 c, elastic member-132, ink bottle-200, case-210, base-210 a, cover-210 b, valve cavity-211, first ink storage cavity-211 a, second ink storage cavity-211 b, gas filling hole-212, ink outlet hole-213, partition-214 and communication hole-214 a.

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 efforts belong to the protection scope of the present invention.

It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

It should be understood that in the description of the present invention, the orientation or positional relationship indicated by the terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal, top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

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. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, the present invention provides an ink cartridge 200, the ink cartridge 200 includes a housing 210 and a valve assembly 100, at least a portion of the valve assembly 100 is disposed in the housing 100, and is used to adjust the air pressure in the ink cartridge 200.

Specifically, an ink storage cavity 211 for accommodating and storing ink is formed in the housing 210, a gas filling hole 212 and an ink outlet hole 213 are formed in a side wall of the housing 210, and the valve assembly 100 can control the connection or disconnection between the gas filling hole 212 and the ink outlet hole 213.

When the ink cartridge 200 is mounted to a printer, during a pressurization process, the air charging hole 212 is connected to an air charging pump (not shown), the air charging pump charges pressurized air into the ink cartridge 200 to force ink in the ink storage chamber 211 to flow out from the ink outlet hole 213, so as to realize ink ventilation, and the flowing ink is delivered to a printing head.

During printing, ink is supplied to the ink cartridge 200, the air pump is removed, the air hole 212 is communicated with the atmosphere, the ink inside the ink storage cavity 211 is continuously consumed, and negative pressure is generated in the ink storage cavity 211. If the negative pressure in the ink storage cavity 211 is too high, color shortage will be caused, and ink in the ink box 200 cannot flow out stably; if the negative pressure in the ink storage chamber 211 is too small, the ink in the ink box 200 will leak in the static printing state, and color mixing will occur, so that the printing performance is unstable and unreliable, and the printing quality is poor. Therefore, it is necessary to adjust the pressure balance inside and outside the ink storage chamber 211.

Therefore, in the preferred embodiment, the air pressure in the ink storage chamber 211 is adjusted by the valve assembly 100 to ensure that the ink cartridge 200 can stably pressurize and discharge ink when being mounted to a printer, and to ensure the printing effect by making the flow rate of ink supplied to the printer stable and controllable when entering the printing state. The valve assembly 100 and the ink cartridge 200 provided by the present invention have a better air pressure balance performance and sealing performance.

Further, as shown in fig. 1, the housing 210 is substantially box-shaped. Of course, in other embodiments, the shape of the housing 210 may be regular or irregular according to different assembly and application requirements, and the specific shape is not limited in the present invention.

As shown in fig. 2 and 3, the housing 210 includes a base 210a and a cover 210b, and the base 210a and the cover 210b are fastened to each other. It can be understood that the base 210a and the cover 210b may be separated from each other, may be fixed by screwing, welding, riveting or clipping, or may be integrally formed.

The air charging hole 212 and the ink discharging hole 213 are opened on the sidewall of the base 210 a. Preferably, the ink outlet hole 213 and the air charging hole 212 are located on the same sidewall of the base 210a for easy installation and practical use; by disposing the ink outlet hole 213 and the air charging hole 212 relatively close to each other, the air path transmission path between the air charging hole 212 and the ink outlet hole 213 can be shortened, so that the structure of the case 210 is more compact, and the structure of the ink cartridge 200 is more compact and simpler.

It is understood that the ink outlet hole 213 and the air filling hole 212 may be located on the adjacent side wall or the opposite side wall of the base 210a, and the positions thereof may be adjusted according to the use requirement.

As shown in fig. 2, a partition plate 214 is provided in the housing 210, and the partition plate 214 partitions the ink storage chamber 211 into a first ink storage chamber 211a and a second ink storage chamber 211b, both of which are used to store ink. The first ink storage cavity 211a is communicated with the ink outlet hole 213, the partition plate 214 is provided with a communication hole 214a for communicating the first ink storage cavity 211a with the second ink storage cavity 211b, the second ink storage cavity 211b is used as a spare ink storage cavity, and after the ink in the first ink storage cavity 211a is consumed, the ink in the second ink storage cavity 211b flows to the first ink storage cavity 211b through the communication hole 214 a.

Preferably, the number of the communication holes 214a is two at intervals. It is understood that the ink reservoir 211 may also be divided into more than two chambers.

In this embodiment, at least a portion of valve assembly 100 is received within second reservoir 211b, and valve assembly 100 is configured to regulate the pressure balance within first reservoir 211 a.

As shown in fig. 2 and 3, the valve assembly 100 includes a valve body unit 100a and a sealing unit 130, the valve body unit 110 has a valve cavity 101 therein, the sealing unit 130 is sealingly and movably disposed in the valve cavity 101 and divides the valve cavity 101 into a first cavity 101a and a second cavity 101b, and the first cavity 101a and the second cavity 101b are independent of each other.

The valve chamber 101 has a transfer passage 102 formed on an inner sidewall thereof, and the sealing unit 130 is capable of moving along the inner sidewall of the valve chamber 101 so as to selectively communicate the transfer passage 102 with the first chamber 101a and/or the second chamber 101 b.

It will be appreciated that in fig. 6, the transfer passage 102 being in selective communication with the first chamber 101a and/or the second chamber 101b means that, during the movement of the sealing unit 130 along the inner side wall of the valve chamber 101, the transfer passage 102 is in communication with the second chamber 101b when the upper side of the seal 131 is above the top dead center S1; when the sealing member 131 is located between the top dead center S1 and the bottom dead center S2, the transfer passage 102 communicates the first chamber 101a and the second chamber 101 b; when the lower side of the sealing member 131 is positioned below the bottom dead center S2, the transfer passage 102 communicates with the first chamber 101 a.

It will be appreciated that in fig. 8, the selective communication of the transfer passage 102 with the first chamber 101a and/or the second chamber 101b means that, during the movement of the sealing unit 130 along the inner side wall of the valve chamber 101, when the sealing rib 131c is located above the top dead centre S1, the transfer passage 102 communicates with the second chamber 101 b; when the seal rib 131c is located between the top dead center S1 and the bottom dead center S2, the transfer passage 102 communicates the first chamber 101a and the second chamber 101 b; when the seal rib is located below the bottom dead center S2, the transfer passage 102 communicates with the first chamber 101 a.

Preferably, the sealing unit 130 is driven by a direct driving member or by a pressure difference inside the valve chamber 101. Specifically, in the present embodiment, the movement of the sealing unit 130 is driven by the pressure difference inside the valve chamber 101

Specifically, during the printing process, as the ink in the first ink storage chamber 211a is continuously consumed, since the first ink storage chamber 211a is communicated with the second chamber 101b through the through hole 121, the negative pressure in the second chamber 101b gradually increases, and since the first chamber 101a is communicated with the atmosphere, the negative pressure difference between the first chamber 101a and the second chamber 101b gradually increases, the sealing unit 130 responds to the negative pressure difference between the first chamber 101a and the second chamber 101b and moves along the inner side wall of the valve chamber 200 under the action of the negative pressure difference, so that the transmission passage 102 is communicated with the first chamber 101a and the second chamber 101b, or the communication between the first chamber 101a and the second chamber 101b is disconnected.

The valve body unit 100a includes a valve cover 110 and a valve seat 120, the valve seat 120 is accommodated in the second ink storage cavity 211b, and the valve cover 110 covers the valve seat 120 and surrounds the valve seat 120 to form a valve cavity 101.

In the preferred embodiment, the first chamber 101a is relatively close to the valve cover 110, and the second chamber 101b is relatively close to the valve seat 120. During pressurization, the first chamber 101a is communicated with an air charging pump of the printer through an air charging hole 212, and the second chamber 101b is communicated with an ink outlet hole 213; during printing, the first chamber 101a communicates with the atmosphere, and the second chamber 101b communicates with the ink outlet 213.

Further, the valve cover 110 of the preferred embodiment is integrally formed with the cover plate 210b, and the valve seat 120 is also integrally formed with the base 210 a.

In this embodiment, the valve seat 120 is disposed proximate the inflation port 212. Preferably, the inflation hole 212 extends from the inner sidewall of the base 210a along its axis to the sidewall of the valve seat 120. An inflation passage 111 is provided between the first chamber 101a and the inflation hole 212, and communicates with each other through the inflation passage 111. When the ink cartridge 200 is mounted to the printer, the inflator pressurizes the first chamber 101a through the inflation hole 212 and the inflation passage 111.

In one embodiment, as shown in fig. 2 and 5, the number of the delivery passages 102 is two, and the two delivery passages 102 are circumferentially spaced along the inner sidewall of the valve chamber 101. Of course, the number of the transmission channels 102 is other, such as one or three, and the specific number thereof can be set according to actual requirements, and is not limited herein.

Preferably, in the present embodiment, the two delivery passages 102 are symmetrically disposed on the inner side wall of the valve chamber 101 with respect to the axis of the valve chamber 101.

In another embodiment, as shown in fig. 4, the transfer passage 102 is annular and is circumferentially arranged along the inner side wall of the valve chamber 101, i.e. a circle of continuous transfer passage 102 is circumferentially arranged on the inner side wall of the valve chamber 101.

As shown in fig. 5 and 6, the extension length of the transmission passage 102 along the moving direction of the sealing unit 130 (i.e. the axial direction of the valve chamber 101) is L1, and L1 is smaller than the distance of the sealing unit 130 moving along the inner side wall of the valve chamber 101. When the sealing unit 130 moves, that is, the position of the sealing unit 130 changes, the gas passage (the direction of the arrow in fig. 9) between the first chamber 101a and the second chamber 101b is connected or disconnected through the transfer passage 102.

It will be appreciated that by limiting the length of the transfer passage 102, the first chamber 101a can be controlled to communicate with the second chamber 101b at a predetermined pressure.

As shown in fig. 5 and 6, the sealing unit 130 includes a sealing member 131 and an elastic member 132, the sealing member 131 is movably and hermetically disposed in the valve chamber 101, the elastic member 132 is accommodated in the second chamber 101b, and one end of the elastic member 132 abuts against the bottom of the second chamber 101b, and the other end abuts against the sealing member 130. During pressurization of the first chamber 101a by the inflator, air pressure acts on the outer surface of the seal 131 adjacent the first chamber 101 a.

As shown in fig. 7, when the force of the air pressure charged by the inflator is smaller than the force of the elastic member 132 plus the friction force between the sealing member 131 and the inner sidewall of the valve chamber 101, the pressure between the first chamber 101a and the second chamber 101b is in relative equilibrium, and therefore, the sealing member 131 does not move along the inner sidewall of the valve chamber 101, which is referred to as a first state in which the transfer passage is disconnected from the first chamber, the transfer passage 102 is communicated with the second chamber 101b, and the first chamber is disconnected from the second chamber.

As shown in fig. 9, the inflator continuously inflates the first chamber 101a, when the air pressure acting force of the inflator is greater than the acting force of the elastic member 132 and the friction force between the sealing member 131 and the inner sidewall of the valve chamber 101, the sealing member 131 can move along the inner sidewall of the valve chamber 101 under the action of the pressure difference, and since the second chamber 101b is communicated with the first ink storage chamber 211a through the through hole 121, the sealing member 131 presses the ink in the first ink storage chamber 211a to flow from the ink outlet hole 213 to the printer head when moving downward along the inner sidewall of the valve chamber 101; meanwhile, in this state, the first chamber 101a and the second chamber 10 communicate with each other through the transfer passage 102, and this state is referred to as a second state.

As shown in fig. 10, the inflator continuously inflates the first chamber 101a, when the air pressure acting force of the inflator is much greater than the acting force of the elastic member 132 and the friction force between the sealing member 131 and the inner side wall of the valve chamber 101, the sealing member 131 continuously moves downward toward the second chamber 101b, and when the sealing rib 131c of the sealing member 131 moves below the bottom dead center S2 of the transmission passage 102, the air passage between the first chamber 101a and the second chamber 101b is disconnected, which is referred to as a third state.

It can be understood that the first chamber 101a is communicated with the gas filling hole 212, and during the process of pressurizing and discharging ink from the ink cartridge 200, as long as the pressure value entering at the gas filling hole 212 is large enough, at this time, the sealing member 131 can move from the first state to the third state in a short time, and the pressurized gas hardly enters the second chamber 101b through the transmission channel 102, so as to avoid that the transmission channel 101 communicates the first chamber 101a with the second chamber 101b for a long time, and the pressurized gas impacts the ink in the first ink storage chamber 211a, which leads to the splashing of the ink at the ink discharging hole 213; at the same time, the volume of the second chamber 101b becomes smaller with the movement of the sealing member 131, so that the gas in the first ink storage chamber 211a is forced to be able to be discharged from the ink outlet 212, thereby completing the pressurized ink discharge.

After the pressurization is completed, the inflator is separated from the inflation hole 211, and the inflation hole 211 is communicated with the atmosphere. As the air pressure in the first chamber 101a is relatively reduced, the sealing member 131 will be moved from the third state to the second state and the first state in sequence by the elastic member 132.

As shown in fig. 9, in the process that the sealing member 131 moves to the second state, the first chamber 101a and the second chamber 101b are communicated through the transmission channel 102, so that the air pressure values applied to the sealing member 131 are balanced. When the sealing member 131 moves to the first state, the sealing member 131 abuts against the inner sidewall of the valve cavity 101 to form a seal, so that the atmosphere does not enter the second cavity 101b, and the pressure in the ink storage cavity 211 can be recovered to a certain negative pressure value. The process of this aerifing the end can not only effectively guarantee the smoothness nature that the ink flows out, can make the bubble in the printer shower nozzle be taken back to storing up the ink chamber moreover.

When the printer starts printing, the print head draws ink from the ink outlet 213 of the ink cartridge 200, and the ink in the second chamber 101b is consumed, the negative pressure in the second chamber 101b will further increase, and when the negative pressure difference between the second chamber 101b and the first chamber 101a is greater than the sum of the friction between the elastic force of the elastic member 132 and the inner side wall of the valve chamber 101, the sealing member 131 will move from the first state to the second state under the action of the negative pressure difference.

When the sealing member 131 moves to the second state, air can enter the first chamber 101a and the second chamber 101b from the air inflation hole 212 in sequence, so as to reduce the negative pressure value in the second chamber 101b, at this time, the air pressure value in the second chamber 101b gradually increases, when the pressure difference between the pressure in the second chamber 101b and the pressure in the first chamber 101a is smaller than the restoring force of the elastic member 131, the sealing member 131 will be reset to the first state under the action of the elastic member 132, and the above cycle is repeated, so that the negative pressure value in the second chamber 101b can be always controlled within the stable range.

The shape of the seal 131 matches the shape of the valve chamber 101 as shown in fig. 11. In the present embodiment, the sealing member 131 is circular and includes a sealing body 131a and a sealing ring 131b, and the sealing ring 131b is disposed around the outer periphery of the sealing body 131a to seal the inner sidewall of the valve cavity 101.

The sealing body 131a has a circular shape. The sealing body 131a may be made of plastic material such as PP or ABS. Preferably, the sealing ring 131b may be provided integrally with the sealing body 131a or separately. The sealing ring 131b may be a rubber ring, a silicone ring, or other members having sealing performance. In this embodiment, the sealing ring 131b is a rubber ring, and the sealing ring 131b and the sealing body 131a are separated from each other.

As shown in fig. 11, the thickness of the sealing ring 131b in the moving direction of the sealing unit 130 (the axial direction of the valve chamber 101) is L2, and L1 and L2 have a relationship that L1 is greater than L2, that is, the thickness of the sealing ring 131b in the moving direction of the sealing unit 130 is smaller than the length of the transfer passage 102 in the moving direction of the sealing unit 130, so that the first chamber 101a and the second chamber 101b can communicate with each other through the transfer passage 102 when the sealing ring 131b moves to the position of the transfer passage 102.

The extension of the transfer passage 102 in the moving direction of the sealing unit 130 is smaller than the distance of the movement of the sealing ring 131b along the inner side wall of the valve chamber 101. When the sealing ring 131b moves, i.e. the position of the sealing ring 131b changes, the gas passage (arrow direction in fig. 5) between the first chamber 101a and the second chamber 101b is controlled to be connected or disconnected through the transfer passage 102.

As shown in fig. 12 and 13, the sealing body 131a has a mounting portion 1311 protruding outward on the peripheral outer wall, and the sealing ring 131b is sealingly fitted on the mounting portion 1311.

Preferably, the surface of the sealing body 131a facing the first chamber 101a is flush with the surface of the sealing ring 131b close to said first chamber 101a, so as to uniformly stress the sealing body 131a as a whole.

Further, as shown in fig. 6 and fig. 11 or 12, a concave portion 1312 is disposed on a side surface of the sealing main body 131a facing the first chamber 101a, and a positioning column 112 is disposed on an inner surface of the valve body unit 100a, and the positioning column 112 can cooperate with the concave portion 1312 to limit a movement range of the sealing member 131 along an inner wall of the valve chamber 101.

Specifically, the positioning pillars 112 are disposed on the inner surface of the valve cover 110, and the positioning pillars 112 can cooperate with the recesses 1312 to limit the movement range of the sealing member 131 along the inner sidewall of the valve chamber 101 toward the valve cover 110.

When the sealing main body 131a moves towards the first cavity 101a until the positioning pillar 112 is matched with the concave part 1312, the positioning pillar 112 abuts against the sealing main body 131a, so that the sealing main body 131a is limited from moving close to the valve cover 110 in a transition way.

Preferably, the recess 1312 may be a groove or a hole, and the positioning post 112 protrudes into the recess 1312 to abut against the sealing main body 131a, thereby restricting the movement of the sealing main body 131 a.

Of course, in other embodiments, the position of the concave portion 1312 and the position of the positioning pillar 112 may be interchanged, which can also limit the position of the sealing main body 131 a; meanwhile, the recess 1312 may be replaced by another structure capable of cooperating with the positioning pillar 112, which is not described herein again.

Further, as shown in fig. 6, the surface of the sealing main body 131a facing the second cavity 101b is convexly provided with a first positioning portion 1313, the bottom of the second cavity 101b is convexly provided with a second positioning portion 122, one end of the elastic member 132 is sleeved on the first positioning portion 1313, and the other end is sleeved on the second positioning portion 122, so that the elastic member 132 is installed.

Preferably, the second positioning portion 122 is provided on the valve seat 120 and is provided integrally with the valve seat 120.

The first positioning portions 1313 are provided corresponding to the recesses 1312. The surface of the sealing body 131a facing the first chamber 101a is provided with a recess 1312 formed to be recessed toward the second chamber 101b, and the other surface of the sealing body 131a is formed to be protruded with the first positioning portion 1313, and a portion of the recess 1312 extends to the first positioning portion 1313.

Preferably, the second locator portion 122 may be provided as an integral structure with the valve seat 120.

As shown in fig. 6, optionally, a limiting protrusion 122a is disposed on an outer side wall of the second positioning portion 122, and the limiting protrusion 122a is in limiting fit with the elastic member 132 to prevent the elastic member 132 from disengaging from the second positioning portion 122.

Specifically, the limiting protrusion 122a is a barb structure disposed on the outer sidewall of the second positioning portion 122, and when the elastic element 132 is sleeved on the second positioning portion 122, the elastic element 132 is hooked by the barb structure, so as to limit the elastic element 132.

As shown in fig. 12 and 13, the seal ring 131b further includes a seal ridge 131c, and the seal ridge 131c is provided to protrude from the outer peripheral side of the seal ring 131a and is in sealing contact with the inner wall of the valve chamber 101. It will be appreciated that the sealing rib 131c is relied upon herein to act against the inner side wall of the valve chamber 101 to effect a sealing contact of the seal 131 with the inner side wall of the valve chamber 101. Of course, in other embodiments, the sealing rib 131c may be omitted, and the sealing rib 131b may directly contact with the inner sidewall of the valve cavity 101 in a sealing manner.

The number of the sealing ribs 131c is one or more. Specifically, in this embodiment, the number of the sealing protruding strips 131c is two, and the two sealing protruding strips 131c are distributed at intervals on the upper and lower sides of the sealing ring 131b, so that a double sealing effect is formed in the sealing process to improve the sealing performance. Of course, in other embodiments, the number of the sealing ribs 131c may also be set to 1, 3, etc., and the specific number may be set according to the actual sealing requirement.

Preferably, as shown in fig. 13, the distance between two sealing ribs 131c is L3, and L1 is greater than L3, i.e. the extension length of the transfer channel 102 along the moving direction of the sealing unit 130 is greater than the distance between two sealing ribs 131c, so as to avoid that the first cavity 101a and the second cavity 101b cannot be communicated through the transfer channel 102 when the sealing member 131 moves to the predetermined position.

Alternatively, the seal rib 131c may be provided integrally with the seal ring 131b or separately. In the present embodiment, the sealing rib 131c and the sealing ring 131b are integrally formed, that is, the peripheral side of the sealing rib 131c is outwardly protruded to form a sealing protrusion.

The utility model provides a valve module 100 and ink horn 200, through setting up sealed unit and transmission path, the inside wall motion of sealed unit along the valve pocket to the selectivity makes the first chamber of transmission path intercommunication and second chamber, so that the second chamber keeps certain negative pressure at the printing in-process, and then guarantees to stabilize out the china ink, and this kind of realization ink that adjusts the atmospheric pressure balance can be better stably flows out, and it is better to print the effect, makes the ink horn have good atmospheric pressure balance performance and sealing performance. Furthermore, the utility model provides an ink box compact structure, it is longer to receive the life-span, and the shared volume of valve unit spare is less in the ink horn, therefore the ink horn has great storage ink volume, and the ink horn has good atmospheric pressure balance performance and sealing performance.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

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 valve assembly, characterized in that the valve assembly (100) comprises:

a valve body unit (100a) having a valve chamber (101) therein;

a sealing unit (130) movably disposed in the valve chamber (101) and dividing the valve chamber (101) into a first chamber (101a) and a second chamber (101 b);

the inner side wall of the valve cavity (101) is provided with a transmission passage (102), and the sealing unit (130) can move along the inner side wall of the valve cavity (101) so that the transmission passage (102) can be selectively communicated with the first cavity (101a) and/or the second cavity (101 b).

2. The valve assembly according to claim 1, wherein the sealing unit (130) comprises a sealing member (131) and an elastic member (132), the sealing member (131) is movably disposed in the valve chamber (101), the elastic member (132) is accommodated in the second chamber (101b), and one end of the elastic member (132) abuts against the bottom of the second chamber (101b) and the other end abuts against the sealing member (131).

3. The valve assembly according to claim 2, wherein the sealing member (131) comprises a sealing body (131a) and a sealing ring (131b), and the sealing ring (131b) is arranged around the outer circumference of the sealing body (131a) and is in sealing contact with the inner side wall of the valve cavity (101).

4. The valve assembly according to claim 3, wherein the peripheral side outer wall of the sealing main body (131a) is provided with an outward protruding mounting part (1311), and the sealing ring (131b) is hermetically sleeved on the mounting part (1311).

5. Valve assembly according to claim 3 or 4, wherein the thickness of the sealing ring (131b) in the direction of movement of the sealing unit (130) is smaller than the length of the transfer channel (102) in the direction of movement of the sealing unit (130), and the extension of the transfer channel (102) in the direction of movement of the sealing unit (130) is smaller than the distance of movement of the sealing ring (131b) along the inner side wall of the valve chamber (101).

6. The valve assembly according to claim 3 or 4, wherein the sealing ring (131b) further comprises a sealing rib (131c), and the sealing rib (131c) is protruded on the outer periphery side of the sealing ring (131b) and is in sealing contact with the inner side wall of the valve chamber (101).

7. The valve assembly according to claim 6, wherein the number of the sealing ribs (131c) is one or more, the sealing ribs (131c) being provided to protrude to an outer peripheral side of the seal ring (131b) in a moving direction of the seal member (131);

the transfer channel (102) comprises a top dead center (S1) and a bottom dead center (S2), the transfer channel communicates the first chamber and the second chamber when the sealing bead (131c) is located between the top dead center (S1) and the bottom dead center (S2), the sealing bead (131) interrupts the communication between the first chamber (101a) and the second chamber (101b) when the sealing bead (131c) is located at an upper side of the top dead center (S1) or at a lower side of the bottom dead center (S2).

8. A valve assembly according to claim 3 or 4, wherein the valve body unit (100a) comprises a valve cover (110), the inner surface of the valve cover (110) is convexly provided with a positioning column (112), the side surface of the sealing main body (131a) facing the first cavity (101a) is provided with a recess (1312), and the positioning column (112) can be matched with the recess (1312) to limit the movement range of the sealing member (131) along the inner side wall of the valve cavity (101).

9. The valve assembly of claim 8, wherein a surface of the sealing body (131a) facing the second chamber (101b) is protruded with a first positioning portion (1313), a bottom of the second chamber (101b) is protruded with a second positioning portion (122), and one end of the elastic member (132) is sleeved on the first positioning portion (1313) and the other end is sleeved on the second positioning portion (122).

10. The valve assembly of claim 9, wherein the first detent (1313) is disposed in correspondence with the recess (1312), the recess (1312) extending partially to the first detent (1313); the outer side wall of the second positioning part (122) is convexly provided with a limiting protrusion (122a), and the limiting protrusion (122a) is in limiting fit with the elastic part (132).

11. The valve assembly according to claim 1, characterized in that one conveying passage (102) is arranged along the circumferential direction of the inner wall of the valve cavity (101) or a plurality of conveying passages (102) are arranged at intervals;

or, a circle of transmission channel (102) is formed along the circumferential direction of the inner wall of the valve cavity (101) and is recessed towards the direction away from the inner wall of the valve cavity (101).

12. An ink cartridge, characterized in that the ink cartridge (200) comprises a housing (210) and the valve assembly (100) as claimed in any one of claims 1 to 11, the housing (210) is provided with a gas filling hole (212) and an ink outlet hole (213), at least a part of the valve assembly (100) is arranged in the housing (210), and the valve assembly (100) can control the connection or disconnection between the gas filling hole (212) and the ink outlet hole (213).

13. The ink cartridge as claimed in claim 12, wherein the gas filling hole (212) communicates with the first chamber (101a), the ink outlet hole (213) communicates with the second chamber (101b), and a gas filling channel (111) is provided between the gas filling hole (212) and the first chamber (101 a).

14. The ink cartridge as claimed in claim 13, wherein an ink storage chamber (211) is formed in the housing (210), a partition plate (214) is formed in the housing (210), and the partition plate (214) partitions the ink storage chamber (211) into a first ink storage chamber (211a) and a second ink storage chamber (211 b);

the first ink storage cavity (211a) is communicated with the ink outlet hole (213), and the partition plate (214) is provided with a communication hole (214a) for communicating the first ink storage cavity (211a) with the second ink storage cavity (211 b).

15. The ink cartridge as claimed in claim 14, wherein a through hole (121) is formed in a sidewall of the second chamber (101b), the through hole (121) being configured to communicate the second chamber (101b) with the first ink storage chamber (211 a).