Fluid box structure without gas guide film

Abstract

The utility model relates to the technical field of fluid boxes, in particular to a fluid box structure without an air guide film, which comprises a box body, a liquid outlet structure, a liquid storage structure and a sealing element, the liquid storage structure is arranged in the box body, the liquid outlet structure is arranged on the box body, and the sealing element is used for sealing the liquid outlet structure. The liquid guide assembly comprises a buffer cavity, a connecting cavity and a liquid storage structure, the buffer cavity is communicated with the liquid storage structure, and a conveying pipe is arranged in the buffer cavity. The problem that an existing fluid box without a sponge structure for an ink-jet printer is prone to causing ink shortage in printing is effectively solved. According to the utility model, the liquid outlet end of the conveying pipe is higher than the conveying hole, so that fluid in the conveying pipe can be prevented from entering the buffer cavity under the condition that no pressure difference is generated, bubbles generated by liquid in the liquid storage cavity in the reciprocating motion process of the ink vehicle can be effectively prevented from entering the buffer cavity, and the nozzle of the printer is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid boxes, in particular to a fluid box structure without an air-conducting membrane. Background Art

[0002] Inkjet printers are nowadays a relatively common printing device. In order to print exercises or teaching materials for their children, some parents generally use inkjet printers to print the corresponding content. The inkjet printer uses corresponding fluid cartridges to provide the printer with corresponding colors.

[0003] Currently, the more mainstream compatible fluid boxes on the market generally have an air-conducting membrane structure. Users need to tear off and discard the air-conducting membrane of the fluid box when using it, which increases the complexity of the user's operation to a certain extent, and the discarded air-conducting membrane increases environmental pollution to a certain extent.

[0004] However, in existing compatible fluid cartridges without an air-conducting membrane structure, such as the patent CN211641441U, the gas-liquid exchange hole is located close to the ink outlet. The high-speed reciprocating motion of the print head during operation will cause tiny bubbles entering the liquid storage chamber from the gas-liquid exchange hole to be sucked into the ink outlet, and then enter the print head, causing ink shortage during printing.

[0005] At the same time, since the liquid storage chamber and the cache chamber of this type of compatible fluid box are connected through a partition hole or directly connected through a large channel at the bottom, when the fluid box using this structure is placed in a way that the cache chamber is located at a high position in the liquid storage chamber and vibrates (such as during transportation), due to the short or large diameter of the channel between the liquid storage chamber and the cache chamber, the ink in the cache chamber will produce gas-liquid exchange with the air in the liquid storage chamber due to the action of external force, thereby forming an ink-free cavity in the cache chamber and causing ink shortage in printing. The solution to this type of product is to add a metal filter, such as the CN116476534A patent.

[0006] Moreover, since the air guide holes and ink outlet of products with this type of structure are respectively located on the upper and lower end faces of the fluid cartridge, when the user takes out the fluid cartridge from the printer ink cart again during use, the air guide holes of the fluid cartridge are already open, and the self-closing sealing plug of the ink outlet of the fluid cartridge is more likely to be deformed due to being installed in the printer for a long time and unable to completely close. Therefore, there is a greater chance of ink leakage when the fluid cartridge is taken out or when placed after being taken out, as disclosed in patent CN204095298U. Utility Model Content

[0007] In view of the above situation, in order to overcome the defects of the existing technology, the purpose of the present invention is to provide a fluid box structure without an air guide membrane, which effectively solves the problem that the existing fluid box structure without a sponge structure for inkjet printers is prone to ink shortage during printing.

[0008] The technical solution provided by the present invention is a fluid box structure without an air-conducting membrane, comprising a box body, a liquid outlet structure, a liquid storage structure, and a sealing member. The liquid storage structure is provided in the box body for storing printer ink, the liquid outlet structure is provided on the box body for outputting the liquid from the storage structure to the printer nozzle, and the sealing member is used to seal the liquid outlet structure.

[0009] The liquid outlet structure includes a liquid outlet hole, a liquid guide component and a pressure balancing component. The liquid outlet hole is connected to the liquid storage structure through the liquid guide component. The liquid guide component is used to output the ink in the liquid storage structure to the liquid outlet hole. The liquid outlet hole is used to accommodate the ink nozzle of the printer. The pressure balancing component is connected to the liquid storage structure to balance the internal pressure of the liquid storage structure. The liquid outlet hole, the liquid guide component and the pressure balancing component form a closed loop through the sealing component. The sealing component simultaneously seals the liquid outlet hole, the liquid guide component and the pressure balancing component.

[0010] Preferably, the liquid guiding component includes a buffer chamber and a connecting chamber, the connecting chamber is connected to the liquid storage structure through the delivery hole, the buffer chamber is connected to the liquid storage structure through the connecting chamber, a delivery pipe with a liquid outlet end higher than the delivery hole is provided in the buffer chamber, the buffer chamber is connected to the liquid outlet hole for ink to flow out, and the sealing member acts on the side of the connecting chamber connected to the outside world for sealing the connecting chamber.

[0011] Preferably, the height of the liquid outlet hole is lower than the height of the liquid outlet end of the delivery pipe.

[0012] Preferably, the pressure balance component includes an air guide cavity and a gas-liquid balance cavity, and the air guide cavity introduces external air into the liquid storage structure through the gas-liquid balance cavity. The air guide cavity is arranged on one side of the liquid outlet and is connected to the outside through the air guide hole.

[0013] Preferably, the air guide hole is connected to the liquid outlet hole through a connecting groove provided on the side wall of the liquid outlet hole, and the sealing member acts on the side where the liquid outlet hole and the air guide hole are connected to the outside world to seal the liquid outlet hole and the air guide hole.

[0014] Preferably, the air inlet end of the air guide hole is flush with the liquid outlet end of the liquid outlet hole.

[0015] Preferably, the air guide cavity is connected to the gas-liquid balance cavity via an air guide groove, and the air guide groove is arranged above the liquid level in the liquid storage structure.

[0016] Preferably, the liquid storage structure includes a plurality of liquid storage cavities arranged in the box body, a baffle is provided between two adjacent liquid storage cavities, and a liquid hole for connecting the liquid storage cavities on both sides is provided on the side of the baffle away from the liquid surface in the liquid storage structure, and the outermost liquid storage cavity is connected to the gas-liquid balance cavity through the liquid outlet hole, and the liquid outlet hole connected to the gas-liquid balance cavity is provided on the lower side of the gas-liquid balance cavity.

[0017] Preferably, the sealing member is made of PS sealing film or BOPP single-sided corona film.

[0018] The beneficial effects of the utility model are:

[0019] The utility model adopts a delivery tube with a liquid outlet end higher than the delivery hole, which can prevent the ink in the liquid storage chamber from entering the buffer chamber when no pressure difference is generated. This can effectively reduce the ink in the liquid storage chamber from automatically entering the buffer chamber during the reciprocating motion of the ink carriage, thereby reducing the impact force on the ink input head of the printer and protecting the ink input head of the printer.

[0020] The utility model adopts that the air inlet end of the air guide hole is flush with the liquid outlet end of the liquid outlet hole. When the fluid box is taken out again after installation, there is no height difference between the air inlet end of the air guide hole and the liquid outlet end of the liquid outlet hole, so no ink dripping or leakage occurs.

[0021] The utility model utilizes the principle of pressure balance, so that there is no need to tear off the air guide film for the air guide hole separately, which simplifies the operation steps for users when replacing the fluid cartridge and also reduces the degree of pollution to the environment. In addition, no filter is required to be provided in the cartridge body to prevent the ink in the buffer chamber or the connecting chamber from flowing back into the liquid storage chamber during improper placement or transportation, thereby avoiding the problem of ink shortage in the printer caused by the above reasons.

[0022] The utility model adopts the same sealing member to seal the liquid outlet hole, the air guide hole and the connecting cavity at the same time, thus simplifying the production and processing technology and improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the cutaway right side structure of the present utility model;

[0025] Figure 3 It is a schematic diagram of the cutaway right side structure of the present utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the utility model from above with the cover removed;

[0027] Figure 5 This is a bottom-up perspective structural diagram of the utility model with the sealing member removed;

[0028] In the figure, 1-box body; 2-liquid outlet structure; 3-liquid storage structure; 4-sealing element; 21-liquid outlet hole; 22-liquid guide assembly; 23-pressure balance assembly; 221-buffer chamber; 222-connecting chamber; 223-delivery hole; 224-delivery pipe; 231-air guide chamber; 232-gas-liquid balance chamber; 233-air guide hole; 234-connecting groove; 235-air guide groove; 31-liquid storage chamber; 32-baffle; 33-liquid through hole; 11-shell; 12-cover plate. DETAILED DESCRIPTION

[0029] The following is in conjunction with the instructions Figure 1-5 The specific implementation methods of the present utility model are described in further detail.

[0030] A fluid cartridge structure without an air-conducting membrane comprises a cartridge body 1, a liquid outlet structure 2, a liquid storage structure 3, and a seal 4. The cartridge body 1 comprises a shell 11 and a cover plate 12, wherein the cover plate 12 is welded to the shell 11 to form a sealed space within the shell 11. The liquid storage structure 3 is disposed within the cartridge body 1 for storing printer ink.

[0031] The liquid storage structure 3 includes a plurality of liquid storage chambers 31 arranged in the box body 1. Two adjacent liquid storage chambers 31 are separated by a baffle 32. At the same time, a liquid passage hole 33 is provided on the baffle 32. The liquid passage hole 33 is located on the side away from the cover plate 12. The liquid passage hole 33 is set at this position so that when the box body 1 is installed in the printer, the liquid passage hole 33 is located on the side close to the liquid inlet end of the printer, and the ink between the adjacent liquid storage chambers 31 can flow better.

[0032] The liquid outlet structure 2 is provided on the cartridge body 1 and is used to transfer the ink in the liquid storage structure 3 to the printer. The liquid outlet structure 2 includes a liquid outlet hole 21, a liquid guide component 22, and a pressure balancing component 23. The liquid guide component 22 guides the ink in the liquid storage cavity 31 of the liquid storage structure 3 to the liquid outlet hole 21.

[0033] The liquid guide assembly 22 is provided with a connecting chamber 222 and a buffer chamber 221 in sequence along the direction of ink outflow, wherein the liquid guide assembly 22 is connected to the liquid storage chamber 31 through the delivery hole 223, and the liquid outlet hole 21 is connected to the liquid storage chamber 31 through the buffer chamber 221 and the connecting chamber 222. A delivery pipe 224 is provided in the buffer chamber 221, wherein the liquid outlet end of the delivery pipe 224 is higher than the position of the delivery hole 223, the height of the liquid outlet hole 21 is lower than the height of the liquid outlet end of the delivery pipe 224, and the height of the liquid inlet end of the delivery pipe 224 is higher than the height of the liquid inlet end of the connecting chamber 222. In this way, when there is no pressure change, the ink in the connecting chamber 222 will not enter the buffer chamber 221, which can effectively reduce the impact of the ink in the buffer chamber 221 on the print head;

[0034] The height of the liquid inlet end of the connecting cavity 222 is lower than the height of the delivery hole 223 , so that the ink inside can enter the connecting cavity 222 without residue.

[0035] The pressure balancing assembly 23 includes an air guide hole 233, an air guide cavity 231, an air guide groove 235 and an air-liquid balance cavity 232 along the air transmission path. The air guide hole 233 is connected to the liquid outlet hole 21 through a connecting groove 234 provided on the side wall of the liquid outlet hole 21. One side of the air-liquid balance cavity 232 is connected to the liquid storage cavity 31 and the other side is connected to the outside world through the air guide groove 235, the air guide cavity 231 and the air guide hole 233.

[0036] The air inlet end of the air guide hole 233 is flush with the liquid outlet end of the liquid outlet hole 21. When the fluid cartridge is removed after installation, there is no height difference between the air inlet end of the air guide hole 233 and the liquid outlet end of the liquid outlet hole 21, so no ink dripping or leakage occurs.

[0037] The air guide groove 235 can be set on the shell 11 or on the cover plate 12. The air guide groove 235 only needs to be connected to the delivery hole 223 of the gas-liquid balance chamber 232 at both ends of the gas-liquid balance chamber 232. The external gas enters the gas-liquid balance chamber 232 through the air guide hole 233, the gas guide chamber 231 and the air guide groove 235, which can make the air pressure value in the shell 11 the same as the atmospheric pressure, so as to facilitate better flow of ink.

[0038] The liquid outlet 21 is used to accommodate the ink input head of the printer, and the ink enters the interior of the printer through the ink input head of the printer. At the same time, a positioning groove is provided on the outside of the liquid outlet 21 to position and limit the ink input head of the printer.

[0039] The outermost liquid storage chamber 31 is connected to the gas-liquid balance chamber 232 through the liquid outlet hole 21. Under the action of the liquid outlet hole 21, a closed loop is formed inside the box body 1, and the sealing member 4 always closes the connecting chamber 222. The sealing member 4 can seal the ink inlet when it is not pressed by the liquid inlet end of the printer. The sealing member 4 can be made of PS sealing film or BOPP single-sided corona film. This material is relatively brittle. When the ink needle pierces the seal 4, the above material will not wrap the ink needle.

[0040] When the present invention is in use, the machine equipment seals the liquid outlet structure 2 with the seal 4, and at the same time uses the perfusion equipment to inject ink into the shell 11 and uses the welding equipment to seal the cover plate 12 and the shell 11. At this time, a closed space is formed inside the shell 11, and the ink will not flow out under the action of external pressure;

[0041] When the cartridge 1 needs to be installed in the printer, the staff aligns the liquid outlet 21 with the ink input end of the printer, and at the same time, the ink input end of the printer is inserted into the positioning groove. The ink input end of the printer pierces the seal 4 and is inserted into the liquid outlet 21. At this time, the seal 4 still seals the opening of the connecting cavity 222, and the air guide hole 233 is connected to the outside world under the action of the connecting groove 234.

[0042] When the printer needs to draw in ink, the pump in the printer starts, driving the ink through the liquid storage chamber 31, the liquid outlet 21, the connecting chamber 222, and the buffer chamber 221 to the ink input end of the printer. As the ink enters the ink input end of the printer, a certain negative pressure exists in the liquid storage chamber 31, and the ink in the gas-liquid balance chamber 232 is attracted to replenish the liquid storage chamber 31. Under the action of the air guide groove 235, the air guide cavity 231, the air guide hole 233, and the connecting groove, the outside air enters the gas-liquid balance chamber 232, so that the air pressure in the cartridge body 1 is the same as the outside atmospheric pressure.

[0043] The utility model adopts a delivery tube 224 with a liquid outlet end higher than the delivery hole 223, which can prevent the ink in the liquid storage chamber 31 from entering the buffer chamber 221 when no pressure difference is generated. This can effectively reduce the ink in the liquid storage chamber 31 from automatically entering the buffer chamber 221 during the reciprocating motion of the ink carriage, thereby reducing the impact force on the ink input head of the printer and protecting the ink input head of the printer.

[0044] In the present invention, the air inlet end of the air guide hole 233 is flush with the liquid outlet end of the liquid outlet hole 21. When the fluid cartridge is removed again after installation, there is no height difference between the air inlet end of the air guide hole 233 and the liquid outlet end of the liquid outlet hole 21, so no ink dripping or leakage occurs.

[0045] The present invention utilizes the principle of pressure balance, eliminating the need to tear open the air guide film for the air guide hole 233, thereby simplifying the user's operation steps when replacing the fluid cartridge and reducing the degree of environmental pollution. Furthermore, no filter is required in the cartridge body 1 to prevent the ink in the buffer chamber 221 or the connecting chamber 222 from flowing back into the liquid storage chamber 31 during improper placement or transportation, thereby avoiding the ink shortage problem of the printer caused by the above-mentioned reasons.

[0046] The utility model adopts the same sealing member 4 to seal the liquid outlet 21, the air guide hole 233 and the connecting cavity 222 at the same time, thereby simplifying the production and processing technology and improving the processing efficiency.

Claims

1. A fluid box structure without an air-conducting membrane, comprising a box body (1), a liquid outlet structure (2), a liquid storage structure (3), and a sealing member (4), wherein the liquid storage structure (3) is arranged in the box body (1) for storing printer ink, the liquid outlet structure (2) is arranged on the box body (1) for outputting the liquid from the liquid storage structure (3) to a nozzle of a printer, and the sealing member (4) is used to seal the liquid outlet structure (2); The liquid outlet structure (2) comprises a liquid outlet hole (21), a liquid guide component (22) and a pressure balancing component (23); the liquid outlet hole (21) is connected to the liquid storage structure (3) via the liquid guide component (22); the liquid guide component (22) is used to output ink in the liquid storage structure (3) to the liquid outlet hole (21); the liquid outlet hole (21) is used to accommodate an inkjet head of a printer; the pressure balancing component (23) is connected to the liquid storage structure (3) and is used to balance the internal pressure of the liquid storage structure (3); It is characterized in that The liquid outlet hole (21), the liquid guide assembly (22), and the pressure balance assembly (23) form a closed loop via the sealing member (4), and the sealing member (4) simultaneously seals the liquid outlet hole (21), the liquid guide assembly (22), and the pressure balance assembly (23).

2. The fluid box structure without an air-conducting membrane according to claim 1, characterized in that: The liquid guide assembly (22) comprises a buffer chamber (221) and a connecting chamber (222), wherein the connecting chamber (222) is in communication with the liquid storage structure (3) via the delivery hole (223), the buffer chamber (221) is in communication with the connecting chamber (222), a delivery tube (224) having a liquid outlet higher than the delivery hole (223) is provided in the buffer chamber (221), the buffer chamber (221) is in communication with the liquid outlet hole (21) for ink to flow out, and the sealing member (4) acts on the side of the connecting chamber (222) in communication with the outside world to seal the connecting chamber (222).

3. The fluid box structure without an air-conducting membrane according to claim 1, characterized in that: The height of the liquid outlet hole (21) is lower than the height of the liquid outlet end of the delivery pipe (224).

4. The fluid box structure without an air-conducting membrane according to claim 2, characterized in that: The pressure balancing component (23) comprises an air guide cavity (231) and a gas-liquid balancing cavity (232). The air guide cavity (231) guides external air into the liquid storage structure (3) via the gas-liquid balancing cavity (232). The air guide cavity (231) is arranged on one side of the liquid outlet (21) and communicates with the outside world via the air guide hole (233).

5. The fluid box structure without an air-conducting membrane according to claim 4, characterized in that: The air guide hole (233) is connected to the liquid outlet hole (21) via a connecting groove (234) provided on the side wall of the liquid outlet hole (21), and the sealing member (4) acts on the side where the liquid outlet hole (21) and the air guide hole (233) are connected to the outside world to seal the liquid outlet hole (21) and the air guide hole (233).

6. The fluid box structure without an air-conducting membrane according to claim 4, characterized in that: The air inlet end of the air guide hole (233) is flush with the liquid outlet end of the liquid outlet hole (21).

7. The fluid box structure without an air-conducting membrane according to claim 5, characterized in that: The air guide cavity (231) is connected to the gas-liquid balance cavity (232) via the air guide groove (235), and the air guide groove (235) is arranged above the liquid level in the liquid storage structure (3).

8. The fluid box structure without an air-conducting membrane according to claim 7, characterized in that: The liquid storage structure (3) comprises a plurality of liquid storage cavities (31) arranged in the box body (1), a baffle (32) is provided between two adjacent liquid storage cavities (31), a liquid hole (33) for connecting the liquid storage cavities (31) on both sides is provided on the side of the baffle (32) away from the liquid surface in the liquid storage structure (3), the outermost liquid storage cavity (31) is connected to the gas-liquid balance cavity (232) via the liquid outlet hole (21), and the liquid outlet hole (21) connected to the gas-liquid balance cavity (232) is provided on the lower side of the gas-liquid balance cavity (232).

9. The fluid box structure without an air-conducting membrane according to claim 5, characterized in that: The sealing member (4) is made of PS sealing film or BOPP single-sided corona film.

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