A multi-cavity ink injection flow channel structure and ink cartridge

Abstract

The utility model discloses a multi-cavity ink injection flow channel structure and an ink cartridge. The multi-cavity ink injection flow channel structure is connected to a cavity. More than two cavities are provided. The cavity is connected to the outside world through the multi-cavity ink injection flow channel structure. The multi-cavity ink injection flow channel includes more than three flow channels. The flow channels include a first flow channel, a second flow channel and a third flow channel. One end of the first flow channel is an ink injection port, which is connected to the outside world; one end of the second flow channel is connected to the other end of the first flow channel, and the other end of the second flow channel is connected to one of the cavities; and a third flow channel, one end of the third flow channel is connected to the first flow channel, and the other end of the third flow channel is connected to another cavity. Through the multi-cavity ink injection flow channel structure, more than two cavities can be connected at the same time, so that the first flow channel can be used to divert to the second flow channel and the third flow channel, and then the two cavities are respectively injected with ink through the second flow channel and the third flow channel, and the pressure between different cavities can also be kept balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of ink cartridges, in particular to a multi-cavity ink injection flow channel structure and an ink cartridge. Background Art

[0002] With the development of the times, the application of printers in human production and life is becoming more and more extensive. Among them, the ink cartridge is one of the key components in the printer, which is used to provide ink supply so that the printer can print text, images or other contents on paper.

[0003] In the prior art, ink cartridges in inkjet printers usually form a state of equilibrium with atmospheric pressure through the adsorption of a storage carrier (such as a sponge) to achieve a stable supply of ink. There is also a method of controlling the negative pressure of the ink chamber by a built-in elastic pressure control structure in the ink chamber to achieve a stable supply of ink. However, the ink cartridge with an elastic pressure control structure in the ink chamber is usually in the form of a single chamber. The ink storage capacity of a single chamber ink cartridge is small, so the ink cartridge needs to be replaced frequently. Therefore, an ink cartridge with a multi-chamber structure and an ink injection structure adapted to the ink injection are proposed. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a multi-cavity ink injection flow channel structure, which can inject ink into multiple cavities through one injection hole while maintaining pressure balance between different cavities.

[0005] The utility model also provides an ink cartridge having the above-mentioned multi-cavity ink injection flow channel structure.

[0006] According to the multi-cavity ink injection flow channel structure of the first aspect of the utility model, the multi-cavity ink injection flow channel structure is connected to the cavity, the cavity is provided with more than two cavities, the cavity is connected to the outside through the multi-cavity ink injection flow channel structure, and the multi-cavity ink injection flow channel includes more than three flow channels, and the flow channels include:

[0007] a first flow channel, one end of which is an ink injection port, and the ink injection port is connected to the outside;

[0008] a second flow channel, one end of which is connected to the other end of the first flow channel, and the other end of which is connected to one of the cavities; and

[0009] A third flow channel, one end of the third flow channel is connected to the first flow channel, and the other end of the third flow channel is connected to another cavity.

[0010] According to the multi-cavity ink injection flow channel structure of the embodiment of the utility model, at least the following beneficial effects are achieved: through the multi-cavity ink injection flow channel structure, more than two cavities can be connected at the same time, so that the first flow channel can be used to divert to the second flow channel and the third flow channel, and then the two cavities are respectively injected with ink through the second flow channel and the third flow channel, and the pressure between different cavities can also be balanced. It should be emphasized that if there are more than three cavities, then the number of the flow channels should also be set in a one-to-one correspondence with the cavities.

[0011] According to some embodiments of the present invention, the first flow channel and the second flow channel extend in the same direction, and a cross section of the first flow channel overlaps a cross section of the second flow channel.

[0012] According to some embodiments of the present invention, the cross-sections of the first flow channel and the second flow channel are both circular, and the first flow channel and the second flow channel are coaxially arranged.

[0013] According to some embodiments of the present invention, along the ink injection direction, one end of the third flow channel communicating with the first flow channel extends obliquely in a direction toward the cavity.

[0014] According to some embodiments of the present invention, a cross-section of one end of the third flow channel communicating with the first flow channel gradually increases along an extension direction of the other end of the third flow channel.

[0015] According to some embodiments of the present invention, a cross-section of one end of the second flow channel communicating with the first flow channel gradually decreases along an extension direction of the other end of the second flow channel.

[0016] According to some embodiments of the present invention, the caliber of the third flow channel is larger than the caliber of the second flow channel.

[0017] According to some embodiments of the present invention, a blocking piece is further included, wherein the blocking piece is arranged in the first flow channel and is used to block a connection port of the flow channel.

[0018] According to the ink cartridge of the second aspect of the utility model, the ink cartridge includes the multi-cavity ink injection channel structure described in any one of the embodiments of the first aspect.

[0019] The ink cartridge according to the embodiment of the utility model has at least the following beneficial effects: the ink cartridge is provided with the multi-cavity ink injection channel structure described in the embodiment of the first aspect, so that the multi-cavity ink injection channel can be used to inject ink into the multiple cavities in the ink cartridge at the same time, while maintaining the pressure balance between the various cavities, thereby ensuring the stability of the ink in the ink cartridge, which will neither flow out easily nor be unable to flow out, thereby facilitating the use of the ink cartridge.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 A schematic diagram of the interior of an ink cartridge according to an embodiment of the second aspect of the utility model;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of a multi-cavity ink injection channel structure of an ink cartridge is shown;

[0024] Figure 3 for Figure 2 A half-section schematic diagram of a multi-cavity ink injection channel structure is shown.

[0025] Reference numerals:

[0026] Ink cartridge 1; cavity 2; multi-cavity ink injection flow channel structure 3;

[0027] A first flow channel 10; an ink injection port 11; a second flow channel 20; a third flow channel 30;

[0028] The sealing member 40. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Reference Figures 1 to 3 According to the multi-cavity 2 ink injection flow channel structure of the first embodiment of the utility model, it is connected to the cavity 2, and the cavity 2 is provided with more than two cavities. The cavity 2 is connected to the outside through the multi-cavity 2 ink injection flow channel structure. The multi-cavity 2 ink injection flow channel includes more than three flow channels, and the flow channels include a first flow channel 10, a second flow channel 20, and a third flow channel 30. One end of the first flow channel 10 is an ink injection port 11, and the ink injection port 11 is connected to the outside; one end of the second flow channel 20 is connected to the other end of the first flow channel 10, and the other end of the second flow channel 20 is connected to one of the cavities 2; one end of the third flow channel 30 is connected to the first flow channel 10, and the third flow channel 30 is connected to another cavity 2.

[0034] Specifically, the multi-cavity 2 ink injection channel structure mainly includes a first channel 10, a second channel 20 and a third channel 30, each of which has its own specific function and connection method. One end of the first channel 10 is designed as an ink injection port 11, which is directly connected to the outside world, making it easier for users to perform ink injection operations, thereby making the ink injection process more convenient, and at the same time effectively preventing ink leakage, ensuring the accuracy and stability of ink injection.

[0035] One end of the second flow channel 20 is connected to the other end of the first flow channel 10, forming a fluid passage. The other end of the second flow channel 20 is connected to one of the cavities 2, so that the ink injected through the first flow channel 10 can flow smoothly into this cavity 2. Not only does it ensure the smooth flow of ink, but it can also effectively prevent the blockage and accumulation of ink in the flow channel. One end of the third flow channel 30 is also connected to the first flow channel 10, but its other end is connected to another cavity 2. The third flow channel 30 allows the ink to flow into different cavities 2 respectively through the first flow channel 10, thereby realizing the simultaneous ink injection of multiple cavities 2, greatly improving the efficiency of ink injection.

[0036] It is worth noting that in this specific embodiment, the multi-cavity 2 ink injection flow channel structure can be flexibly expanded to communicate with more cavities 2, and only the corresponding flow channels need to be added. In addition, the multi-cavity 2 ink injection flow channel structure is reasonably designed, easy to manufacture and assemble, and also convenient to maintain and clean. It not only improves the ink injection efficiency of the printer cartridge, but also improves the user experience, and has high practical value and market prospects. In general, the multi-cavity 2 ink injection flow channel structure realizes orderly and efficient ink injection of multiple cavities 2 through reasonable design, which brings great convenience to the design and use of the printer cartridge 1.

[0037] Therefore, it can be understood that the multi-cavity 2 ink injection flow channel structure according to the embodiment of the utility model has at least the following beneficial effects: through the multi-cavity 2 ink injection flow channel structure, more than two cavities 2 can be connected at the same time, so that the first flow channel 10 can be used to divert to the second flow channel 20 and the third flow channel 30, and then the two cavities 2 are respectively injected with ink through the second flow channel 20 and the third flow channel 30, and the pressure between different cavities 2 can also be balanced. It should be emphasized that if there are more than three cavities 2, the number of flow channels should also be set in a one-to-one correspondence with the cavities 2.

[0038] Further, refer to Figure 3 In some embodiments of the present invention, the first flow channel 10 and the second flow channel 20 extend in the same direction, and a cross section of the first flow channel 10 overlaps a cross section of the second flow channel 20 .

[0039] The first flow channel 10 and the second flow channel 20 extend in the same direction, which can ensure that the flow direction of the ink will not change drastically when it flows from the first flow channel 10 to the second flow channel 20, thereby reducing fluid resistance and improving flow efficiency. In addition, the cross-section of the second flow channel 20 overlaps with the cross-section of the first flow channel 10, further optimizing the flow channel structure and making the flow of ink in the flow channel smoother. Specifically, since the cross-section of the second flow channel 20 overlaps with the cross-section of the first flow channel 10, in some embodiments, the cross-section of the second flow channel 20 is smaller than the cross-section of the first flow channel 10. At the connection between the first flow channel 10 and the second flow channel 20, the flow area of ​​the ink is reduced, and a certain volume of ink is buffered and stored in the first flow channel 10, so as to facilitate the ink to flow from the third flow channel 30 into another cavity 2.

[0040] Furthermore, refer to Figures 2 to 3 In some embodiments of the utility model, the cross-sections of the first flow channel 10 and the second flow channel 20 are both circular, and the first flow channel 10 and the second flow channel 20 are coaxially arranged. The cross-sections of the first flow channel 10 and the second flow channel 20 are both circular. The first flow channel 10 and the second flow channel 20 with circular cross-sections have excellent performance in the transmission of ink because they can provide uniform ink flow and reduce flow dead corners and fluid resistance. In addition, the circular flow channel also helps to prevent the ink from generating vortices during the flow process, thereby improving the flow efficiency. More importantly, the first flow channel 10 and the second flow channel 20 are coaxially arranged. The coaxial arrangement means that the center lines of the two flow channels coincide. Such a design ensures that when the ink flows from the first flow channel 10 into the second flow channel 20, the flow path is straight without any deviation or bending. This not only further reduces the fluid resistance, but also ensures the uniformity and stability of the flow.

[0041] Reference Figure 3 In some embodiments of the utility model, along the ink injection direction, one end of the third flow channel 30 connected with the first flow channel 10 extends obliquely in the direction toward the cavity 2. The third flow channel 30 extending obliquely in the direction toward the cavity 2 forms an inverted "Y"-shaped flow channel with the first flow channel 10 and the second flow channel 20, and cooperates with the coaxially arranged first flow channel 10 and the second flow channel 20 to ensure that the amount of liquid between the cavity 2 connected with the second flow channel 20 and the cavity 2 connected with the third flow channel 30 is in a uniform state during ink injection.

[0042] It should be noted that the intersection position of the third flow channel 30 and the first flow channel 10, that is, the height position of the third flow channel 30 in the first flow channel 10 should also be calculated to ensure that the amount of liquid between the cavity 2 connected to the second flow channel 20 and the cavity 2 connected to the third flow channel 30 is in a uniform state during ink filling.

[0043] Furthermore, in some embodiments of the utility model, in addition to being inclined, the third flow channel 30 has a cross section at one end of the third flow channel 30 connected to the first flow channel 10 that gradually increases along the extension direction of the other end of the third flow channel 30. That is, the third flow channel 30 is an inclined flow channel with a certain taper. Since the positions of the cavities 2 in this embodiment are different, two cavities 2 at different positions will obtain different amounts of ink when injecting ink. Therefore, in order to reduce the difference in the amount of ink injected into the two cavities 2, through the design of the third flow channel 30 and the second flow channel 20, the different inclined positions of the third flow channel 30 and the flow channel setting of the diameter through hole, the coaxial setting of the second flow channel 20 and the first flow channel 10, and the caliber of the second flow channel 20 being smaller than the caliber of the first flow channel 10, it can be ensured that when injecting ink, the amount of ink injected into the two different cavities 2 is uniform.

[0044] It should be noted that the calibers of the first flow channel 10, the second flow channel 20 and the third flow channel 30, the inclination angle of the third flow channel 30 and its own taper are not specifically limited, and the caliber, inclination angle and taper should be specifically set according to the position and pressure of the two cavities 2. If multiple cavities 2 and flow channels are included, in order to ensure that the amount of ink injected between each cavity 2 is uniform, the flow channels should be set with corresponding calibers, inclination angles and taper sizes.

[0045] Similarly, in some embodiments of the utility model, the cross section of one end of the second flow channel 20 connected to the first flow channel 10 gradually decreases along the extension direction of the other end of the second flow channel 20. That is, the second flow channel 20 has a certain taper. Since the positions of the cavities 2 in this embodiment are different, two cavities 2 at different positions will obtain different amounts of ink when injecting ink. Therefore, in order to reduce the difference in the amount of ink injected into the two cavities 2, through the design of the third flow channel 30 and the second flow channel 20, the different inclined positions of the third flow channel 30 and the flow channel setting of the diameter through hole, the coaxial setting of the second flow channel 20 and the first flow channel 10, and the caliber of the second flow channel 20 is smaller than the caliber of the first flow channel 10, and further, the second flow channel 20 whose cross section of one end connected to the first flow channel 10 gradually decreases along the extension direction of the other end of the second flow channel 20, can ensure that when injecting ink, the amount of ink injected into the two different cavities 2 is uniform. Of course, it is conceivable that in order to ensure that the amount of ink injected into the two different cavities 2 is uniform during ink injection, in some embodiments of the present invention, the caliber of the third flow channel 30 can also be set to be larger than the caliber of the second flow channel 20, so that the amount of ink injected into the inclined third flow channel 30 and the vertically arranged second flow channel 20 can be balanced.

[0046] Reference Figure 3In some embodiments of the utility model, the multi-cavity ink injection channel structure also includes a plugging member 40, which is arranged in the first channel 10, and the plugging member 40 is used to block the connection port of the channel. It should be noted that the connection port of the channel is the connection port connecting other channels to the first channel 10, and the number of the connection ports is consistent with the number of channels connected to the first channel 10. When the first channel 10 is used to fill multiple cavities with ink, the connection ports of each channel can be blocked by the plugging member 40 to ensure its sealing performance. Specifically, the plugging member 40 can be a circular plunger that fills the space in the first channel 10; further, the two ends of the plugging member 40 can also have a certain arc or a certain taper, so it can be understood that the partial structure of the end of the plugging member 40 can be blocked in the connection port of the second channel 20, and the circumferential side of the plugging member 40 can also block the connection port between the third channel 30 and the first channel 10. Therefore, it can be understood that if there are more other flow channels (not shown in the figure) connected to the circumferential side of the first flow channel 10, the blocking member 40 can also block the connection ports of these flow channels through its own circumferential side to prevent the various cavities from being connected to each other through the connection ports during use. Of course, the blocking member 40 can even conform to the space in the first flow channel 10, so that the entire space is blocked by the blocking member 40 to ensure the sealing performance of the flow channel (it should be noted that the sealing plug at the ink injection port in the figure is not shown).

[0047] Reference Figure 1 According to the ink cartridge 1 of the second embodiment of the utility model, the ink cartridge 1 includes a multi-cavity 2 ink injection channel structure of any one of the embodiments of the first aspect. The ink cartridge 1 is provided with a multi-cavity 2 ink injection channel structure of the first embodiment, so that the ink can be injected into multiple cavities 2 in the ink cartridge 1 by using the multi-cavity 2 ink injection channel, and the pressure balance between each cavity 2 is maintained, so as to ensure the stability of the ink in the ink cartridge 1, and neither it will flow out easily nor will it be unable to flow out, thereby facilitating the use of the ink cartridge 1. It should be noted that in the ink cartridge 1 of this embodiment, before ink injection, its multiple cavities 2 should be in a vacuum negative pressure state; during the ink injection process, its vacuum cavity 2 cooperates with the elastic member (not shown in the figure) in the cavity 2 to ensure the stability of ink injection, and at the same time, it can also ensure that the ink poured into the cavity 2 will not easily flow out of the cavity 2, and even when the ink outlet of the ink cartridge 1 is facing downward, the ink will not actively flow out from the ink outlet.

[0048] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A multi-cavity ink injection channel structure, characterized in that: Connected to the cavity, the cavity is provided with more than two, the cavity is connected to the outside through the multi-cavity ink injection flow channel structure, the multi-cavity ink injection flow channel includes more than three flow channels, and the flow channel includes: a first flow channel, one end of which is an ink injection port, and the ink injection port is connected to the outside; a second flow channel, one end of which is connected to the other end of the first flow channel, and the other end of which is connected to one of the cavities; and A third flow channel, one end of the third flow channel is connected to the first flow channel, and the other end of the third flow channel is connected to another cavity.

2. The multi-cavity ink injection channel structure according to claim 1, characterized in that: The first flow channel and the second flow channel extend in the same direction, and a cross section of the first flow channel overlaps a cross section of the second flow channel.

3. The multi-cavity ink injection channel structure according to claim 2, characterized in that: The cross sections of the first flow channel and the second flow channel are both circular, and the first flow channel and the second flow channel are coaxially arranged.

4. The multi-cavity ink injection channel structure according to claim 1, characterized in that: Along the ink injection direction, one end of the third flow channel communicating with the first flow channel extends obliquely in a direction toward the cavity.

5. The multi-cavity ink injection channel structure according to claim 1, characterized in that: A cross section of one end of the third flow channel communicating with the first flow channel gradually increases along an extending direction of the other end of the third flow channel.

6. The multi-cavity ink injection channel structure according to claim 1, characterized in that: A cross section of one end of the second flow channel communicating with the first flow channel gradually decreases along an extending direction of the other end of the second flow channel.

7. The multi-cavity ink injection channel structure according to claim 1, characterized in that: The diameter of the third flow channel is larger than the diameter of the second flow channel.

8. The multi-cavity ink injection channel structure according to claim 1, characterized in that: It also includes a blocking piece, which is arranged in the first flow channel and is used to block the connecting port of the flow channel.

9. An ink cartridge, characterized in that: The multi-cavity ink injection flow channel structure comprises any one of claims 1 to 8, wherein the ink cartridge comprises two or more cavities, and the cavities are injected with ink through the multi-cavity ink injection flow channel structure.

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