An ink cartridge with a pressure equalizing device

Abstract

The utility model relates to ink box technical field especially an ink box with pressure balance device, including casing, ink storage cavity in casing inside, the ink jet mouth of communication ink storage cavity fixed in the left end of casing, the recess is opened in the top of casing, and the recess bottom is opened with the pressure regulating hole of communication ink storage cavity, not only can through the outer pressure assembly cooperation pops out subassembly control sealing plate's lift and switch to pressure regulating hole to balance the inside and outside pressure of ink box, and through the pressure plate of outer pressure assembly inside only can slide left and right in the upper groove box lower groove and cannot lift and press down sealing plate to the sealing plate, can effectively avoid sealing plate and influence the stability of pressure regulating hole sealing when vibrating and impacting and moving up and down.

Description

Technical Field

[0001] This utility model relates to the field of ink cartridge technology, and in particular to an ink cartridge with a pressure balancing device. Background Technology

[0002] Currently, existing ink cartridges on the market often experience problems such as ink supply system malfunctions, excessive pressure leading to missing colors during printing, and pressure leakage causing color mixing when the printing process is idle. These issues result in unstable and unreliable printing performance and a significant decrease in print quality.

[0003] An ink cartridge with publication number CN108859419B has an ink storage cavity in its housing with an air chamber connected to an air inlet. The housing also includes an air pressure balancing assembly for adjusting the internal air pressure of the cartridge. The air pressure balancing assembly includes a balance plate, a push rod, a sealing ring, and an air inlet on the housing. The balance plate is located within the ink storage cavity and is integrally connected to a deformable membrane in the air chamber. A first elastic reset element connected to the housing is located on the side facing the air inlet. The push rod is movably inserted into the air inlet, with its outer end having a sealing head placed inside the air inlet for sealing. Its inner end connects to the expanded deformable membrane, driving the push rod to move outward and open the air inlet. A second elastic reset element is provided to reset the push rod and seal the air inlet. This allows for automatic, precise, and effective adjustment and balance of the internal pressure of the ink cartridge.

[0004] The aforementioned ink cartridges address the common issues that arise after installation of existing ink cartridges, such as abnormal ink supply systems, color loss due to excessive pressure during printing, and color mixing caused by pressure leakage when stationary. However, in actual use, the ink cartridges may experience issues due to transportation, handling, installation, disassembly, dropping, impacts, or vibrations. These issues can cause the sealing head to resist the upward movement of the second elastic reset component due to the kinetic energy generated by the impact or vibration, resulting in gaps and leaks at the sealing opening, leading to an unstable seal. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the sealing head resisting the upward movement of the second elastic reset member when subjected to impact or vibration, resulting in leakage and unstable sealing. Therefore, this invention proposes an ink cartridge with a pressure balancing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design an ink cartridge with a pressure balancing device, including a housing, an ink storage chamber inside the housing, and an ink nozzle fixed to the left end of the housing and communicating with the ink storage chamber. The top of the housing has a groove, and the bottom of the groove has a pressure regulating hole communicating with the ink storage chamber.

[0008] The interior of the groove is fitted with a sealing plate for sealing the pressure regulating hole via a pop-out assembly;

[0009] An external pressure assembly for pressing down the sealing plate is installed on the top of the sealing plate.

[0010] Furthermore, the external pressure assembly includes an upper groove and a lower groove that are conveniently opened on the inner walls of the left and right sides of the groove, and a pressure plate is inserted into the upper groove and the lower groove. The bottom surface of the left end of the pressure plate is higher than the bottom surface of the right end, and the bottom of the pressure plate has a slope connecting the bottom surface of the left end and the bottom surface of the right end. The top of the sealing plate has a chamfer with the same angle as the slope. The left and right ends of the pressure plate are respectively provided with a closing push assembly and an opening push assembly.

[0011] Furthermore, the closing push assembly includes a spring sheet fixed in the lower groove, with a pressure plate and a housing respectively fixedly connected to the left and right ends of the spring sheet.

[0012] Furthermore, the opening and pushing assembly includes air holes respectively opened on the left end of the housing. The inside of the housing is provided with a membrane hole that connects the air holes and the upper groove. An elastic membrane located on the right side of the air holes is sealed inside the membrane hole. A pusher is adhered to the right end face of the elastic membrane, and a pressure plate is fixedly connected to the right end of the pusher.

[0013] Furthermore, the pop-out component includes a mounting block fixed to the bottom of the ink storage cavity, and a sliding hole is provided in the mounting block. A slider and a spring clamped between the slider and the bottom of the sliding hole are slidably installed inside the sliding hole. A top rod is fixed to the top of the slider, and the upper end of the top rod passes through the mounting block and is fixedly connected to the sealing plate.

[0014] Furthermore, the top of the slider is provided with a vent hole for airflow on its upper and lower sides when the slider moves up and down.

[0015] The ink cartridge with pressure balancing device proposed in this utility model has the following advantages: it can not only control the lifting and lowering of the sealing plate and open and close the pressure regulating hole through the external pressure component and pop-out component, thereby balancing the pressure inside and outside the ink cartridge, but also effectively prevent the sealing plate from moving up and down during vibration and impact, thus affecting the stability of the pressure regulating hole seal, by pressing down the sealing plate through the pressure plate in the external pressure component, which can only slide left and right in the upper slot and lower slot of the cartridge and cannot be lifted and lowered. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is an enlarged view of area A of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0019] Figure 4 This is an enlarged view of area B of this utility model.

[0020] In the diagram: 1. Housing; 2. Ink storage chamber; 3. Groove; 4. Pressure regulating hole; 5. Pop-up assembly; 51. Mounting block; 52. Sliding hole; 53. Slider; 54. Spring; 55. Push rod; 6. Sealing plate; 7. External pressure assembly; 71. Upper groove; 72. Lower groove; 73. Pressure plate; 74. Sloping surface; 75. Chamfer; 8. Closing push assembly; 81. Spring piece; 9. Opening push assembly; 91. Air inlet; 92. Membrane hole; 93. Elastic membrane; 94. Push piece. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-4 As an embodiment of this utility model, it discloses an ink cartridge with a pressure balancing device, including a housing 1, an ink storage cavity 2 inside the housing 1, and an ink jet nozzle fixed to the left end of the housing 1 and communicating with the ink storage cavity 2. The feature is that: a groove 3 is provided on the top of the housing 1, and a pressure regulating hole 4 communicating with the ink storage cavity 2 is provided at the bottom of the groove 3.

[0023] The interior of the groove 3 is fitted with a sealing plate 6 for sealing the pressure regulating hole 4 via a pop-out component 5.

[0024] An external pressure assembly 7 for pressing down the sealing plate 6 is installed on the top of the sealing plate 6;

[0025] During use, the external pressure component 7 presses down the sealing plate 6 to seal the pressure regulating hole 4. When pressure adjustment is required, the external pressure component 7 releases the pressure on the sealing plate 6, causing it to automatically rise and open the pressure regulating hole 4 under the action of the pop-out component 5. This allows air to enter and exit the ink storage chamber 2 through the pressure regulating hole 4 until the air pressure in the ink storage chamber 2 reaches equilibrium with the atmospheric pressure. This prevents the ink cartridge from being affected by excessively high or low pressure in the ink storage chamber 2. After the pressure is balanced, the external pressure component 7 presses down the sealing plate 6 to seal the pressure regulating hole 4, ultimately allowing the ink cartridge to spray ink normally.

[0026] Specifically, the external pressure component 7 includes an upper groove 71 and a lower groove 72 that are conveniently opened on the inner walls of the left and right sides of the groove 3, and a pressure plate 73 is inserted into the upper groove 71 and the lower groove 72. The bottom surface of the left end of the pressure plate 73 is higher than the bottom surface of the right end, and the bottom of the pressure plate 73 has a slope 74 that connects the bottom surface of the left end and the bottom surface of the right end. The top of the sealing plate 6 has a chamfer 75 with the same angle as the slope 74. The left and right ends of the pressure plate 73 are respectively provided with a closing push component 8 and an opening push component 9.

[0027] When the pressure inside the ink storage chamber 2 is not in balance with the external atmospheric pressure, the right end of the pressure plate 73 is moved to the right and separated from the sealing plate 6 by activating the push assembly 9 to push the pressure plate 73. The higher left end of the pressure plate 73 is moved above the sealing plate 6, thus releasing the height restriction of the right end of the pressure plate 73 on the sealing plate 6, so that the sealing plate 6 can automatically rise under the action of the pop-out assembly 5.

[0028] When the pressure inside the ink storage chamber 2 is balanced with the external atmospheric pressure, the rightward push of the opening push component 9 on the pressure plate 73 is released, causing it to move to the left under the action of the closing push component 8. During the leftward movement, the slope 74 contacts the chamfer 75 of the sealing plate 6. As the slope 74 slides on the chamfer 75, it presses down on the chamfer 75, causing the sealing plate 6 to resist the descent of the ejection component 5 until the upper end of the sealing plate 6 descends to the height of the bottom right end of the pressure plate 73 and moves to the bottom right end of the pressure plate 73. This seals the pressure regulating hole 4, and the pressure plate 73, which can only move left and right, blocks the sealing plate 6, preventing it from moving up and down during vibration and impact.

[0029] It should be noted that the closing push assembly 8 includes a spring piece 81 fixed in the lower groove 72. The left and right ends of the spring piece 81 are respectively fixedly connected to the pressure plate 73 and the housing 1, and the pressure plate 73 is pushed to the left by the spring piece 81.

[0030] In detail, the opening and pushing component 9 includes an air inlet 91 respectively opened at the left end of the housing 1. The housing 1 has a membrane hole 92 that connects the air inlet 91 and the upper groove 71. An elastic membrane 93 located to the right of the air inlet 91 is sealed and installed inside the membrane hole 92. A pusher 94 is bonded to the right end face of the elastic membrane 93, and the right end of the pusher 94 is fixedly connected to the pressure plate 73.

[0031] Air is pumped into the air hole 91 by the air pumping mechanism of the printer, causing it to enter the left side of the elastic membrane 93 inside the membrane hole 92. This causes the elastic membrane 93 to bulge to the right and push the push plate 94 to move the pressure plate 73 to the right. When the air pumping stops, the elastic membrane 93 returns to its original state and pulls the push plate 94 to the left. At the same time, the pressure plate 73 moves to the left under the action of the closing push assembly 8, thereby causing the push plate 94 to move to the left and reset.

[0032] In some embodiments, the pop-out component 5 includes a mounting block 51 fixed to the bottom of the ink storage cavity 2, and a sliding hole 52 is provided in the mounting block 51. A slider 53 and a spring 54 are slidably mounted inside the sliding hole 52. A top rod 55 is fixed to the top of the slider 53, and the upper end of the top rod 55 passes through the mounting block 51 and is fixedly connected to the sealing plate 6.

[0033] The slider 53, which is slidably installed in the sliding hole 52, allows the push rod 55 to slide only up and down, thereby guiding the sealing plate 6 to slide only up and down. At the same time, the slider 53 can only slide up and down in the sliding hole 52 and cannot leave the sliding hole 52. Thus, the push rod 55 restricts the sealing plate 6, preventing it from leaving the groove 3.

[0034] When it is necessary to balance the internal and external pressures and release the pressure plate 73 from the sealing plate 6, the spring 54 pushes the slider 53 upward, causing it to drive the sealing plate 6 upward through the top rod 55.

[0035] Furthermore, the top of the slider 53 is provided with a vent hole for airflow on its upper and lower sides when the slider 53 moves up and down, thereby avoiding the unbalanced air pressure on the upper and lower sides of the slider 53 from hindering its up and down movement.

[0036] Working method: When the pressure inside the ink storage chamber 2 is not in balance with the external atmospheric pressure, the air pumping mechanism of the printer pumps air into the air pumping hole 91, so that the air enters the left side of the elastic membrane 93 inside the membrane hole 92, causing the elastic membrane 93 to bulge to the right and push the pusher 94 to move the pressure plate 73 to the right, so that the bottom right end of the pressure plate 73 moves to the right and disengages from the sealing plate 6, and the higher bottom left end of the pressure plate 73 moves above the sealing plate 6, thus releasing the height restriction of the bottom right end of the pressure plate 73 on the sealing plate 6.

[0037] The spring 54 pushes the slider 53, causing it to rise through the top rod 55 and open the pressure regulating hole 4, so that air can enter and exit the ink storage chamber 2 through the pressure regulating hole 4 until the air pressure in the ink storage chamber 2 reaches equilibrium with the atmospheric pressure.

[0038] When the pressure inside and outside the ink storage chamber 2 reaches equilibrium again, the air pumping stops, the elastic membrane 93 returns to its original state and pulls the push plate 94 to the left. At the same time, the spring plate 81 pushes the pressure plate 73 to the left, thereby causing the push plate 94 to move to the left and reset. During the leftward movement, the slope 74 contacts the chamfer 75 of the sealing plate 6 and presses down, causing the sealing plate 6 to descend below the bottom right end of the pressure plate 73. This allows the sealing plate 6 to seal the pressure regulating hole 4. Meanwhile, the pressure plate 73, which can only move left and right, blocks the sealing plate 6, preventing it from moving up and down during vibration and impact.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An ink cartridge with a pressure balancing device, comprising a housing (1), an ink storage chamber (2) inside the housing (1), and an ink jet nozzle fixed to the left end of the housing (1) communicating with the ink storage chamber (2), characterized in that: The top of the housing (1) is provided with a groove (3), and the bottom of the groove (3) is provided with a pressure regulating hole (4) that connects to the ink storage cavity (2). The interior of the groove (3) is fitted with a sealing plate (6) for sealing the pressure regulating hole (4) via a pop-out component (5). An external pressure assembly (7) for pressing down the sealing plate (6) is installed on the top of the sealing plate (6).

2. The ink cartridge with a pressure balancing device according to claim 1, characterized in that: The external pressure assembly (7) includes an upper groove (71) and a lower groove (72) that are conveniently opened on the inner walls of the left and right sides of the groove (3). A pressure plate (73) is inserted into the upper groove (71) and the lower groove (72). The bottom surface of the left end of the pressure plate (73) is higher than the bottom surface of the right end. A slope (74) connecting the bottom surface of the left end and the bottom surface of the right end is opened at the bottom of the pressure plate (73). A chamfer (75) with the same angle as the slope (74) is opened at the top of the sealing plate (6). A closing push assembly (8) and an opening push assembly (9) are respectively provided at the left and right ends of the pressure plate (73).

3. The ink cartridge with a pressure balancing device according to claim 2, characterized in that: The closing push assembly (8) includes a spring piece (81) fixed in the lower groove (72), and the left and right ends of the spring piece (81) are respectively fixedly connected to the pressure plate (73) and the housing (1).

4. The ink cartridge with a pressure balancing device according to claim 2, characterized in that: The opening push assembly (9) includes an air inlet (91) respectively opened on the left end of the housing (1). The housing (1) has a membrane hole (92) that connects the air inlet (91) and the upper groove (71). An elastic membrane (93) located on the right side of the air inlet (91) is sealed inside the membrane hole (92). A pusher (94) is bonded to the right end of the elastic membrane (93), and the right end of the pusher (94) is fixedly connected to the pressure plate (73).

5. The ink cartridge with a pressure balancing device according to claim 1, characterized in that: The pop-out component (5) includes a mounting block (51) fixed to the bottom of the ink storage cavity (2), and a sliding hole (52) is provided in the mounting block (51). A slider (53) and a spring (54) clamped between the slider (53) and the bottom of the sliding hole (52) are slidably installed inside the sliding hole (52). A top rod (55) is fixed to the top of the slider (53), and the upper end of the top rod (55) passes through the mounting block (51) and is fixedly connected to the sealing plate (6).

6. The ink cartridge with a pressure balancing device according to claim 5, characterized in that: The top of the slider (53) is provided with a vent hole for airflow on its upper and lower sides when the slider (53) moves up and down.

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