Ink box with good leakage-proof effect

Abstract

The utility model discloses an ink box with a good leakage-proof effect. The ink box comprises a box body, an air inlet one-way valve and a reset elastic piece. The box body is provided with an air cavity, an ink cavity, an inflation and deflation hole, an ink outlet hole and an air inlet channel, the ink outlet hole is communicated with the ink cavity, the inflation and deflation hole is communicated with the air cavity, at least part of the cavity wall of the air cavity is a deformable membrane, one end of the air inlet channel is provided with an air vent, and the other end of the air inlet channel is provided with an air inlet. The air inlet one-way valve is arranged on the box body and used for enabling the air port to ventilate towards the ink cavity in one direction. The reset elastic piece is matched with the diaphragm and used for applying reset force to the diaphragm. Wherein the air inlet one-way valve comprises a blocking ball and a jacking elastic piece, the blocking ball is used for blocking the air port, the jacking elastic piece is used for applying jacking force for blocking the air port to the blocking ball, jacking force applied to the jacking elastic piece can be generated when the diaphragm bulges, and the jacking force enables the jacking elastic piece to increase the force for jacking the blocking ball. The ink box with the structure can reduce the risk of ink leakage.

Description

Technical Field

[0001] This utility model relates to ink cartridges, and more particularly to an ink cartridge with good leak-proof performance. Background Technology

[0002] An ink cartridge includes a cartridge body with an air chamber, an ink chamber, a filling / defilling vent, an ink outlet, and an air inlet channel. The ink outlet communicates with the ink chamber, and the filling / defilling vent communicates with the air chamber. The sidewall of the air chamber is a deformable diaphragm that separates the ink chamber and the air chamber. One end of the air inlet channel has a vent, and the other end has an air inlet. The vent communicates with the ink chamber, and the air inlet communicates with the outside. A one-way valve is provided at the vent, allowing air to flow unidirectionally into the ink chamber and preventing ink leakage through the air inlet channel. The cartridge body also includes a reset elastic element that cooperates with the diaphragm and applies a reset force to the diaphragm.

[0003] When the ink cartridge described above is working, the printing device inflates and deflates the air chamber through the inflation / deflation vent. The diaphragm, under the influence of air pressure and the return elastic element, alternately expands and contracts. When the diaphragm expands, it compresses the ink chamber, forcing ink out through the ink outlet and supplying it to the printing device. When the diaphragm contracts, the ink chamber is under negative pressure, allowing external gas to enter through the air inlet channel, pass through the one-way valve, and then enter the ink chamber, thus balancing the air pressure and ensuring continuous ink output. In practical applications, when the air chamber is inflated, the diaphragm bulges, and the ink chamber is under relatively high pressure. Under this high pressure, there is a possibility of ink leakage through the one-way valve. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an ink cartridge with good leak-proof performance, which can reduce the risk of ink leakage.

[0005] A leak-proof ink cartridge according to an embodiment of the present invention includes: a cartridge body, comprising an air chamber, an ink chamber, a filling / draining vent, an ink outlet, and an air inlet channel; the ink outlet is connected to the ink chamber, and the filling / draining vent is connected to the air chamber; at least a portion of the wall of the air chamber is a deformable diaphragm, the diaphragm separating the ink chamber and the air chamber; one end of the air inlet channel is provided with a vent, and the other end is provided with an air inlet; the vent is used to communicate with the ink chamber, and the air inlet is used to communicate with the outside of the ink cartridge; and an air inlet one-way valve is disposed in the cartridge body and used to allow the air inlet to... The vent allows air to flow unidirectionally into the ink chamber. A reset elastic element is disposed in the housing and cooperates with the diaphragm. The reset elastic element applies a reset force to the diaphragm. The one-way air inlet valve includes a sealing bead and a pressure elastic element. The sealing bead blocks the vent, and the pressure elastic element applies a pressure to the sealing bead to block the vent. The diaphragm and the pressure elastic element are linked and cooperate. When the diaphragm bulges, it generates a pushing force applied to the pressure elastic element, which increases the pressure of the pressure elastic element on the sealing bead.

[0006] According to an embodiment of the present invention, an ink cartridge with good leak-proof effect has at least the following beneficial effects: when the air chamber is filled with gas, the diaphragm bulges up, generating a pushing force applied to the top pressure elastic element, which increases the top pressure of the top pressure elastic element on the sealing bead, thereby strengthening the sealing of the air vent, reducing the possibility of ink leakage through the air inlet one-way valve, and effectively ensuring the sealing of the ink.

[0007] According to some embodiments of this utility model, the top-pressing elastic element is a spring sheet structure, and the top-pressing elastic element presses against the side of the sealing bead away from the vent.

[0008] According to some embodiments of the present invention, the top-pressing elastic element includes a lever portion, one end of which presses against the side of the sealing bead away from the vent, and the other end of which is disposed on the side in the bulging direction of the diaphragm. The direction in which the lever portion presses against the sealing bead is opposite to the bulging direction of the diaphragm.

[0009] According to some embodiments of the present invention, the top-pressing elastic member further includes a connecting portion, which is fixed to the position between the box body and the lever portion at their two ends, and the connecting portion is capable of elastic deformation.

[0010] According to some embodiments of this utility model, two connecting parts are provided, and they are respectively connected to both sides of the lever part.

[0011] According to some embodiments of the present invention, the lever part is a spring sheet structure, the lever part includes a top pressure sheet and a linkage sheet, one end of the top pressure sheet is connected to one end of the linkage sheet, the top pressure sheet presses against the side of the sealing bead away from the vent, the other end of the linkage sheet is disposed on that side in the bulging direction of the diaphragm, and the top pressure sheet and the linkage sheet are disposed at an angle.

[0012] According to some embodiments of the present invention, the reset elastic element includes a mating piece and an elastic support. The mating piece is used to fit and engage with the diaphragm. The elastic support is elastic and is used to provide an elastic force to reset the mating piece toward the diaphragm. The other end of the lever portion is disposed on the side of the mating piece away from the diaphragm and is used to abut against the mating piece.

[0013] According to some embodiments of the present invention, the elastic support includes a U-shaped spring sheet, the middle section of which is connected to the mating piece, and the two ends of the U-shaped spring sheet are slidably disposed on the box body. When the mating piece is displaced by the diaphragm, the two ends of the U-shaped spring sheet slide away from each other.

[0014] According to some embodiments of this utility model, two U-shaped springs are provided and respectively connected to both sides of the mating piece. The two ends of the two U-shaped springs are connected one-to-one by a connecting rod, and the connecting rod is slidably disposed on the box body.

[0015] According to some embodiments of the present invention, the box body is provided with an installation slot, a limiting plate is provided at the slot opening at one end of the installation slot, an anti-detachment protrusion is provided at the bottom of the slot at the other end of the installation slot, a chip board is installed in the installation slot, one end of the chip board is clamped between the limiting plate and the bottom of the slot of the installation slot, and the other end of the chip board abuts against the side of the anti-detachment protrusion near the limiting plate.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0019] Figure 2 This is an exploded view of an embodiment of the present invention;

[0020] Figure 3This is a schematic diagram of the structure of the resetting elastic element, the pressing elastic element, and the sealing bead in an embodiment of the present invention.

[0021] Figure 4 This is a three-dimensional schematic diagram of the resetting elastic element according to an embodiment of the present utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the top-pressure elastic element according to an embodiment of the present utility model;

[0023] Figure 6 for Figure 2 Enlarged diagram of point A.

[0024] Figure label:

[0025] Box body 100, main shell 101, face cover 102, air chamber 110, ink chamber 120, air filling and discharging hole 130, ink outlet hole 140, air inlet channel 150, air vent 151, air inlet 152, diaphragm 160, mounting slot 170, limiting plate 180, anti-disengagement protrusion 190;

[0026] Intake one-way valve 200, sealing bead 210, top pressure elastic element 220, lever part 221, connecting part 222, top pressure plate 2211, linkage plate 2212;

[0027] Reset elastic element 300, mating piece 310, elastic bracket 320, U-shaped spring piece 321, connecting rod 322

[0028] Chipboard 400. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] Reference Figures 1 to 6 A leak-proof ink cartridge includes a cartridge body 100, an air inlet check valve 200, and a reset elastic element 300. The cartridge body 100 has an air chamber 110, an ink chamber 120, a vent 130, an ink outlet 140, and an air inlet channel 150. The ink outlet 140 communicates with the ink chamber 120, and the vent 130 communicates with the air chamber 110. At least a portion of the wall of the air chamber 110 is a deformable diaphragm 160, which separates the ink chamber 120 and the air chamber 110. One end of the air inlet channel 150 has a vent 151, and the other end has an air inlet 152. The vent 151 communicates with the ink chamber 120, and the air inlet 152 communicates with the outside of the ink cartridge. The air inlet check valve 200 is located in the cartridge body 100 and allows air to flow unidirectionally from the vent 151 to the ink chamber 120. A reset elastic element 300 is disposed in the housing 100. The reset elastic element 300 cooperates with the diaphragm 160 and is used to apply a reset force to the diaphragm 160. The intake one-way valve 200 includes a sealing bead 210 and a top-pressure elastic element 220. The sealing bead 210 is used to block the vent 151, and the top-pressure elastic element 220 is used to apply a top pressure to the sealing bead 210 to block the vent 151. The diaphragm 160 and the top-pressure elastic element 220 can cooperate in a linked manner. When the diaphragm 160 inflates, it generates a pushing force applied to the top-pressure elastic element 220, which increases the force of the top-pressure elastic element 220 on the sealing bead 210.

[0034] When gas is introduced into the air chamber 110, the diaphragm 160 bulges, generating a pushing force applied to the top pressure elastic element 220. This increases the pressure exerted by the top pressure elastic element 220 on the sealing bead 210, thereby strengthening the sealing of the vent 151 and reducing the possibility of ink leakage through the air inlet check valve 200. This effectively ensures the ink's sealing and prevents contamination of the outside environment.

[0035] In one embodiment, the housing 100 includes a main housing 101 and a cover 102, which are connected. In another embodiment, the main housing 101 has a groove, and a diaphragm 160 covers the opening of the groove to form an air chamber 110.

[0036] In this embodiment, the sealing bead 210 can be spherical. Of course, in some embodiments, the sealing bead 210 can also be other shapes, such as cones, ellipsoids, cubes, etc. The specific configuration can be made according to the actual situation.

[0037] In this embodiment, the pressure elastic element 220 is a spring sheet structure, and the pressure elastic element 220 presses against the side of the sealing bead 210 away from the vent 151. The pressure elastic element 220 adopts a spring sheet structure, which is simple in structure.

[0038] In this embodiment, the pressure elastic element 220 includes a lever portion 221. One end of the lever portion 221 presses against the side of the sealing bead 210 away from the vent 151, and the other end of the lever portion 221 is located on that side in the bulging direction of the diaphragm 160. The direction in which the lever portion 221 presses against the sealing bead 210 is opposite to the bulging direction of the diaphragm 160. When the diaphragm 160 bulges, it can push against the other end of the lever portion 221, causing one end of the lever portion 221 to tilt upwards and press against the sealing bead 210, thereby achieving force-assisted sealing of the sealing bead 210. Using a lever structure for force-assisted sealing is simple in structure and easy to implement.

[0039] In this embodiment, the top-pressing elastic element 220 further includes a connecting portion 222, which is fixed to the housing 100 and the lever portion 221 at their respective ends. The connecting portion 222 is capable of elastic deformation. Using the above structure, the lever portion 221 can be stably fixed. The lever portion 221 can use the connection point between the connecting portion 222 and the lever portion 221 as a fulcrum to achieve the linkage function of the lever portion 221, ensuring stable operation of the lever portion 221.

[0040] In this embodiment, two connecting parts 222 are provided and are respectively connected to both sides of the lever part 221, thereby symmetrically fixing the lever part 221 and setting the fulcrum, making the structure more stable and the operation more stable.

[0041] In some embodiments, the lever portion 221 is not limited to the structure described above. For example, the lever portion 221 is accommodated in a limiting groove, and the limiting groove is used to install the lever portion 221.

[0042] In this embodiment, the lever portion 221 is a spring-loaded structure, comprising a pressure plate 2211 and a linkage plate 2212. One end of the pressure plate 2211 is connected to one end of the linkage plate 2212. The pressure plate 2211 presses against the side of the sealing bead 210 away from the vent 151, and the other end of the linkage plate 2212 is positioned on that side in the bulging direction of the diaphragm 160. The pressure plate 2211 and the linkage plate 2212 are angled together. This structure, with the angled pressure plate 2211 and the linkage plate 2212, ensures that the lever portion 221 has good rigidity, sufficient elasticity, and good linkage effect.

[0043] It is conceivable that the top-pressure elastic element 220 is not limited to the structure described above. In the art, there are many implementations of the structure that applies elastic force to the component, and the specific configuration can be made according to the actual situation.

[0044] In this embodiment, the reset elastic member 300 includes a mating piece 310 and an elastic support 320. The mating piece 310 is used to fit against the diaphragm 160, and the elastic support 320 is elastic, providing a spring force to reset the mating piece 310 towards the diaphragm 160. The other end of the lever portion 221 is located on the side of the mating piece 310 away from the diaphragm 160 and is used to abut against the mating piece 310. The reset elastic member 300 described above has a good fit between the mating piece 310 and the diaphragm 160. Furthermore, when the diaphragm 160 bulges, the mating piece 310 pushes against the other end of the lever portion 221, thereby preventing the diaphragm 160 from directly abutting against the pressing elastic member 220, thus providing good protection for the diaphragm 160. Of course, it is conceivable that in some embodiments, the diaphragm 160 can also directly engage with the pressing elastic member 220 without the indirect engagement of the reset elastic member 300.

[0045] In this embodiment, the elastic support 320 includes a U-shaped spring piece 321. The middle section of the U-shaped spring piece 321 is connected to the mating piece 310. The two ends of the U-shaped spring piece 321 are slidably disposed on the housing 100. When the mating piece 310 is displaced by the diaphragm 160, the two ends of the U-shaped spring piece 321 slide away from each other, and the opened U-shaped spring piece 321 has a tendency to return to its original position, thereby applying a return elastic force to the mating piece 310. The elastic support 320 described above has a simple structure, is easy to implement, and provides sufficient elasticity.

[0046] In this embodiment, two U-shaped spring pieces 321 are provided and connected to both sides of the mating piece 310 respectively. The two ends of the two U-shaped spring pieces 321 are connected one-to-one by a connecting rod 322, which is slidably disposed in the housing 100. With the above structure, the two U-shaped spring pieces 321 can deform symmetrically and stably, and the provided reset elastic force is stable.

[0047] It is conceivable that in other embodiments, the reset elastic element 300 is not limited to the structure described above. In the art, there are many other implementations of elastic elements for reset components, and those skilled in the art can make reasonable configurations according to actual conditions.

[0048] In this embodiment, the housing 100 has a mounting slot 170. A limiting plate 180 is provided at the opening of one end of the mounting slot 170, and an anti-detachment protrusion 190 is provided at the bottom of the groove at the other end of the mounting slot 170. A chip board 400 is mounted in the mounting slot 170. One end of the chip board 400 is clamped between the limiting plate 180 and the bottom of the groove of the mounting slot 170, and the other end of the chip board 400 abuts against the side of the anti-detachment protrusion 190 near the limiting plate 180. Using the above structure to mount and fix the chip board 400, the chip board 400 is securely mounted and not easily detached.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A leak-proof ink cartridge, characterized in that, include: The cartridge body (100) is provided with an air chamber (110), an ink chamber (120), an air filling / draining port (130), an ink outlet (140), and an air inlet channel (150). The ink outlet (140) is connected to the ink chamber (120), and the air filling / draining port (130) is connected to the air chamber (110). At least a portion of the cavity wall of the air chamber (110) is a deformable diaphragm (160). The diaphragm (160) separates the ink chamber (120) and the air chamber (110). One end of the air inlet channel (150) is provided with a vent (151), and the other end is provided with an air inlet (152). The vent (151) is used to communicate with the ink chamber (120), and the air inlet (152) is used to communicate with the outside of the ink cartridge. An air inlet check valve (200) is disposed in the housing (100) and is used to allow air to flow unidirectionally from the air inlet (151) to the ink chamber (120); A reset elastic element (300) is disposed in the housing (100), the reset elastic element (300) cooperates with the diaphragm (160), and the reset elastic element (300) is used to apply a reset force to the diaphragm (160); The intake one-way valve (200) includes a sealing bead (210) and a top-pressure elastic element (220). The sealing bead (210) is used to block the vent (151), and the top-pressure elastic element (220) is used to apply a top pressure to the sealing bead (210) to block the vent (151). The diaphragm (160) and the top-pressure elastic element (220) can be linked and cooperated. When the diaphragm (160) bulges, it can generate a pushing force applied to the top-pressure elastic element (220). The pushing force causes the top-pressure elastic element (220) to increase the force pressing the sealing bead (210).

2. The ink cartridge with good leak-proof effect according to claim 1, characterized in that: The top-pressing elastic element (220) is a spring sheet structure, and the top-pressing elastic element (220) presses against the side of the sealing bead (210) away from the vent (151).

3. The ink cartridge with good leak-proof effect according to claim 1, characterized in that: The pressure elastic element (220) includes a lever portion (221), one end of which presses against the side of the sealing bead (210) away from the vent (151), and the other end of which is disposed on the side of the diaphragm (160) in the bulging direction. The direction in which the lever portion (221) presses against the sealing bead (210) is opposite to the bulging direction of the diaphragm (160).

4. The ink cartridge with good leak-proof effect according to claim 3, characterized in that: The top-pressure elastic element (220) also includes a connecting part (222), which is fixed to the box body (100) and the lever part (221) at their respective ends, and the connecting part (222) is capable of elastic deformation.

5. The ink cartridge with good leak-proof effect according to claim 4, characterized in that: Two connecting parts (222) are provided, and they are respectively connected to both sides of the lever part (221).

6. The ink cartridge with good leak-proof effect according to claim 3, characterized in that: The lever part (221) is a spring sheet structure. The lever part (221) includes a top pressure plate (2211) and a linkage plate (2212). One end of the top pressure plate (2211) is connected to one end of the linkage plate (2212). The top pressure plate (2211) presses against the side of the sealing bead (210) away from the vent (151). The other end of the linkage plate (2212) is located on the side of the diaphragm (160) in the bulging direction. The top pressure plate (2211) and the linkage plate (2212) are set at an angle.

7. The ink cartridge with good leak-proof effect according to claim 3, characterized in that: The reset elastic element (300) includes a mating piece (310) and an elastic bracket (320). The mating piece (310) is used to fit and engage with the diaphragm (160). The elastic bracket (320) is elastic and is used to provide an elastic force to reset the mating piece (310) toward the diaphragm (160). The other end of the lever portion (221) is disposed on the side of the mating piece (310) away from the diaphragm (160) and is used to abut against the mating piece (310).

8. The ink cartridge with good leak-proof effect according to claim 7, characterized in that: The elastic support (320) includes a U-shaped spring piece (321), the middle section of which is connected to the mating piece (310). The two ends of the U-shaped spring piece (321) are slidably disposed on the box body (100). When the mating piece (310) is displaced by the diaphragm (160), the two ends of the U-shaped spring piece (321) slide away from each other.

9. The ink cartridge with good leak-proof effect according to claim 8, characterized in that: Two U-shaped springs (321) are provided and connected to both sides of the mating piece (310) respectively. The two ends of the two U-shaped springs (321) are connected one-to-one by a connecting rod (322), and the connecting rod (322) is slidably disposed on the box body (100).

10. The ink cartridge with good leak-proof effect according to claim 1, characterized in that: The housing (100) has an installation slot (170). A limiting plate (180) is provided at the slot opening at one end of the installation slot (170). An anti-dislodgement protrusion (190) is provided at the bottom of the slot at the other end of the installation slot (170). A chip board (400) is installed in the installation slot (170). One end of the chip board (400) is clamped between the limiting plate (180) and the bottom of the slot (170). The other end of the chip board (400) abuts against the side of the anti-dislodgement protrusion (190) near the limiting plate (180).

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