TWI769299B - Ink box - Google Patents

Abstract

An ink box includes an ink storage chamber. The ink storage chamber includes a bottom plate, a first side wall and a second side wall fixed to the bottom plate, a seat fixed to the bottom plate and protruding outward of the first side wall, and a tube fixed to the seat. The second side wall is connected to two ends of the first side wall. The bottom plate, the first side wall and the second side wall together form an ink storage chamber. The tube is used for inserting an ink bottle. A side of the insertion tube forms an ink inlet port and a vent opening. The ink inlet is located above the vent opening and at least a predetermined distance from an end of the tube away from the seat. An ink outlet port and an air guiding port are formed on the seat. The ink inlet port communicates with the ink outlet port. The ink outlet port communicates with the ink storage chamber. The air guiding port is connected with the vent opening and the external atmospheric pressure. The air guiding port is closer to the tube than the ink outlet port.

Description

Ink cartridges

The present invention relates to an ink cartridge.

The ink filling device includes an ink bottle and an ink cartridge. The existing ink cartridge generally has an ink filling cannula, and the top of the cannula is provided with an air channel and an ink channel. The ink bottle is inserted upside down on the ink filling cannula of the ink cartridge, and the ink in the ink bottle is under the action of the air channel and the gravity of the ink itself. Filled into the ink tank automatically. Although this type of ink filling device can easily inject ink into the cartridge, when an air blockage occurs in the ink passage, the ink filling will stop before completion or the ink filling cannot be automatically injected into the ink cartridge when the ink bottle is replaced.

In view of this, it is necessary to provide an ink cartridge that avoids air locks.

An ink cartridge includes an ink storage chamber, the ink storage chamber includes a bottom plate, a first side wall and a second side wall fixed on the bottom plate, the second side wall is connected to both ends of the first side wall, and the bottom plate and the second side wall are connected. The first side wall and the second side wall together form an ink storage chamber, and also includes a fixing seat fixed on the bottom plate and protruding on the outer side of the first side wall, and a plug fixed on the fixing seat. The cannula is used for inserting the ink bottle, the side of the cannula is formed with an ink inlet and a vent, and the ink inlet is located above the vent and is spaced from the end of the cannula away from the fixing seat At least a preset distance, an ink outlet and an air guide are formed on the fixed seat, the ink inlet communicates with the ink outlet, the ink outlet communicates with the ink storage chamber, and the air guide communicates with the ink storage chamber. The air vent is in communication with the outside atmospheric pressure, and the air guide port is closer to the cannula than the ink outlet.

The ink inlet and the air vent on the cannula included in the ink cartridge are located on the side of the cannula, and the ink inlet is located above the air vent and away from the cannula. One end of the fixed seat is at least a preset distance away. When the ink bottle is inserted into the cannula and communicated with the ink inlet, the air pressure in the ink bottle will increase, and the ink in the ink bottle and the ink inlet will increase. The air and sundries between the ink port and the ink outlet will flow out through the ink outlet, so as to avoid the phenomenon of air lock between the ink inlet and the ink outlet.

100: Ink Cartridge

20: Ink storage room

60: Ink guide

80: ink bottle

22: Bottom plate

24: First side wall

26: Second side wall

28: Ink storage chamber

30: Ink outlet tube

62: Fixed seat

64: Intubation

66: Ink inlet

68: Vent

70: Ink outlet

72: Air guide

82: accommodating hole

84: ink chamber

86: Connecting port

88: Valve

25: Filter

32: Third side wall

34: accommodating cavity

36: The first sparse ink path

38: The first entrance

40: The first exit

42: Fourth side wall

44: accommodating area

46: The second sparse ink path

48: Second entrance

50: Second exit

90: Seals

52: Through hole

FIG. 1 is a perspective view of an ink cartridge.

FIG. 2 is a perspective view of the ink cartridge of FIG. 1 from another direction.

FIG. 3 is a perspective view of the ink bottle being inserted into the cannula in FIG. 1 for ink filling.

FIG. 4 is a cross-sectional view of the ink cartridge of FIG. 3 .

FIG. 5 is a cross-sectional view of the ink bottle in FIG. 3 when the ink storage chamber communicates with the ink inlet but not with the air vent.

FIG. 6 is a cross-sectional view along the junction of the bottom plate and the ink storage chamber in FIG. 1 .

FIG. 7 is a perspective view of the ink cartridge in FIG. 1 after adding a seal.

Referring to FIGS. 1 to 5 , an ink cartridge 100 includes an ink storage chamber 20 and an ink guide member 60 fixedly connected to the ink storage chamber 20 . The ink guide member 60 is used to guide the ink in the ink bottle 80 into the ink storage chamber 20 .

The ink storage chamber 20 includes a bottom plate 22 and a first side wall 24 and a second side wall 26 fixed on the bottom plate 22 . The second side wall 26 is connected to both ends of the first side wall 24 , and the bottom plate 22 , the first side wall 24 and the second side wall 26 together form an ink storage chamber 28 . An ink outlet tube 30 communicated with the ink storage chamber 28 is fixed on the outer side of the first side wall 24 . The ink guide member 60 includes a fixing seat 62 fixed on the bottom plate 22 and protruding from the outer side of the first side wall 24 , and a cannula 64 fixed on the fixing seat 62 . The cannula 64 is used for inserting the ink bottle 80 . An ink inlet 66 and an air vent 68 are formed on the side of the cannula 64 . The ink inlet 66 is located above the air vent 68 and is connected to a side of the cannula 64 that is far from the fixing seat 62 . The ends are separated by at least a predetermined distance, such as thirty centimeters. An ink outlet 70 and an air guide port 72 are formed on the fixing base 62 . The ink inlet 66 communicates with the ink outlet 70 , and the ink outlet 70 communicates with the ink storage chamber 28 . The air guide port 72 communicates with the air port 68 and the external atmospheric pressure, and the air guide port 72 is closer to the cannula 64 than the ink outlet port 70 .

The ink bottle 80 forms an accommodating hole 82 and an ink accommodating cavity 84 communicating with the accommodating hole 82 . A valve 88 movable along the axial direction of the accommodating hole 82 is fixed to the communication port 86 where the accommodating hole 82 communicates with the ink accommodating chamber 84 for opening or closing the communication port 86 .

When the ink bottle 80 is placed above the cannula 64 and the accommodating hole 82 is aligned with the cannula 64, the end of the cannula 64 away from the fixing seat 62 abuts against the valve 88 to keep the valve 88 away from all The movement of the communication port 86 opens the communication port 86 . At this time, the end of the cannula 64 away from the fixing seat 62 is placed in the ink-accommodating chamber 84 to occupy the space of the ink-accommodating chamber 84 and reduce the space occupied by the air in the ink-accommodating chamber 84 . In this way, the air pressure in the ink accommodating chamber 84 is increased, so that the air pressure in the ink accommodating chamber 84 is stronger than the outside atmospheric pressure. Since the ink inlet 66 is located above the vent 68 , when the ink bottle 80 is inserted into the cannula 64 , the ink containing chamber 84 first communicates with the ink inlet 66 and then communicates with the vent 68 .

Please refer to FIG. 5 , when the ink bottle 80 is inserted into the ink accommodating chamber 84 and communicates with the ink inlet 66 but not with the air vent 68 , since the air pressure in the ink accommodating chamber 84 is stronger than At the outside atmospheric pressure, the ink in the ink chamber 84 and the air and debris between the ink inlet 66 and the ink outlet 70 will flow out from the ink outlet 70, thereby preventing the ink inlet 66 from being connected to the ink outlet 70. An air lock phenomenon occurs between the ink outlets 70 . In addition, even before the ink bottle 80 is inserted into the cannula 64, an air lock has been generated between the ink inlet port 66 and the ink outlet port 70. Similar to the above, due to the The air pressure is stronger than the outside atmospheric pressure, and the air plug generated between the ink inlet port 66 and the ink outlet port 70 will also be removed, so that the ink flows in from the ink inlet port 66 and flows out from the ink outlet port 70 .

Referring to FIG. 4 , when the ink bottle 80 is inserted into the ink-accommodating chamber 84 and communicated with the air vent 68 , since the ink outlet 70 is located below the air vent 68 , the ink will be removed from the low point. The ink outlet 70 flows to the ink storage chamber 28, and the outside air will enter the ink container 80 through the air guide port 72 and the ventilation port 68, so that the ink continues to flow to the ink storage chamber 28, and then passes through all the It is described that the ink tube 30 flows out. See again 1 and Figure 2, A filter screen 25 is fixed in the ink storage chamber 28 . When the ink flows into the ink storage chamber 28 , it first comes into contact with the filter screen 25 , is filtered by the filter screen 25 and then flows to the bottom of the ink storage chamber 28 and then flows out from the ink outlet pipe 30 .

The ink storage chamber 20 further includes a third side wall 32 fixed on the bottom plate 22 . The third side wall 32 is fixedly connected with the first side wall 24 and the second side wall 26 to form an accommodating cavity 34 . The second side wall 26 forms a first ink thinning channel 36 , and the first ink thinning channel 36 includes a first inlet 38 and a first outlet 40 that communicate with each other. The distance between the first inlet 38 and the bottom plate 22 is greater than the distance between the first outlet 40 and the bottom plate 22 . The first inlet 38 may be disposed at the upper portion of the second side wall 26 , and the first outlet 40 may be disposed at the lower portion of the second side wall 26 . The first inlet 38 communicates with the ink storage chamber 28 , and the first outlet 40 communicates with the accommodating chamber 34 . The first ink thinning channel 36 guides the ink into the accommodating chamber 34 when the ink in the ink storage chamber 20 is located at the first inlet 38 , so as to prevent the ink from overflowing the ink storage chamber 20 .

Specifically, when the ink bottle 80 is used under normal conditions, the ink in the ink bottle 80 flows into the ink storage chamber 28 through the cannula 64, and then flows out through the ink outlet tube 30, and the ink in the ink storage chamber 28 decreases. The ink bottle 80 will automatically replenish the ink into the ink storage chamber 28 , so that the height of the ink in the ink storage chamber 28 will be maintained at a certain height, and the ink will not overflow the ink storage chamber 28 . However, when the ink cartridge 100 is idle, the ink in the ink storage chamber 28 may overflow because the ambient pressure and temperature will always change. At this time, the storage chamber 34 can be used to store the overflowed ink. In addition, ink may overflow from the ink storage chamber 28 during the transportation of the ink cartridge 100 , and at this time, the storage chamber 34 can also be used to store the overflowed ink.

The ink storage chamber 20 further includes at least one fourth side wall 42 extending from the inner side of the third side wall 32 to the fixing seat 62 . The at least one fourth side wall 42 divides the accommodating cavity 34 into a plurality of accommodating regions 44 adjacent to each other. The plurality of accommodating areas 44 communicate with each other. In this embodiment, the ink cartridge 100 includes four fourth side walls 42 , and the four fourth side walls 42 divide the accommodating cavity 34 into five accommodating areas 44 . Please refer to FIG. 2 and FIG. 6 , each of the fourth side walls 42 forms a second ink thinning channel 46 . Each of the second ink thinning channels 46 includes a second inlet 48 and a second outlet 50 that communicate with each other. Each of the second inlets 48 communicates with one of the accommodating areas 44 , and each of the second outlets 50 communicates with another adjacent accommodating area 44 Zone 44 is connected. When the ink in one of the accommodating areas 44 is located in the corresponding second inlet 48 , the second ink thinning channel 46 guides the ink into another adjacent accommodating area 44 to prevent the ink from overflowing.

In addition, since the fourth side wall 42 is connected between the third side wall 32 and the fixing seat 62 , the strength of the ink storage chamber 20 is enhanced. The fourth side wall 42 is placed in the accommodating cavity 34. Due to the isolation effect of the fourth side wall 42, the ink can not easily flow out and pollute the environment.

Referring to FIG. 7 , the ink cartridge 100 further includes a sealing member 90 . The sealing member 90 is fixed on the end surfaces of the first side wall 24 , the second side wall 26 , the third side wall 32 and the fourth side wall 42 away from the bottom plate 22 . The sealing member 90 is a thin film, and the thin film is fixed on the end faces of the first side wall 24 , the second side wall 26 , the third side wall 32 and the fourth side wall 42 away from the bottom plate 22 by hot pressing. . A through hole 52 is formed on the end surface of the first side wall 24 away from the bottom plate 22 , and the external atmospheric pressure flows into the accommodating chamber through the through hole 52 , and the ink storage chamber 28 communicates with the air guide port 72 .

The ink inlet 66 and the air vent 68 on the cannula 64 included in the ink cartridge 100 are located on the side of the cannula 64 , and the ink inlet 66 is located above the air vent 68 and is opposite to the air inlet 68 . The end of the cannula 64 away from the fixing seat 62 is at least a predetermined distance away. When the ink bottle 80 is inserted into the cannula 64 and communicated with the ink inlet 66 , the air pressure in the ink bottle 80 will increase. In addition, the ink in the ink bottle 80 and the air and debris between the ink inlet port 66 and the ink outlet port 70 will flow out through the ink outlet port 70, thereby preventing the ink inlet port 66 from being connected to the ink outlet port 70. A gas lock phenomenon occurs between the ports 70 .

For those skilled in the art, other corresponding changes or adjustments can be made according to the inventive solution and inventive concept of the present invention in combination with actual production needs, and these changes and adjustments should all belong to the scope disclosed by the present invention.

100: Ink Cartridge

20: Ink storage room

60: Ink guide

22: Bottom plate

24: First side wall

26: Second side wall

28: Ink storage chamber

30: Ink outlet tube

62: Fixed seat

64: Intubation

68: Vent

25: Filter

32: Third side wall

36: The first sparse ink path

38: The first entrance

42: Fourth side wall

Claims (9)

An ink cartridge includes an ink storage chamber, the ink storage chamber includes a bottom plate, a first side wall and a second side wall fixed on the bottom plate, the second side wall is connected to both ends of the first side wall, and the bottom plate and the second side wall are connected. The first side wall and the second side wall together form an ink storage chamber, and also includes a fixing seat fixed on the bottom plate and protruding on the outer side of the first side wall, and a plug fixed on the fixing seat. The cannula is used for inserting the ink bottle, the side of the cannula is formed with an ink inlet and a vent, and the ink inlet is located above the vent and is spaced from the end of the cannula away from the fixing seat At least a preset distance, an ink outlet and an air guide are formed on the fixed seat, the ink inlet communicates with the ink outlet, the ink outlet communicates with the ink storage chamber, and the air guide communicates with the ink storage chamber. The air vent communicates with the outside atmospheric pressure, the air guide port is closer to the cannula than the ink outlet, and also includes a third side wall fixed on the bottom plate, the third side wall and the first side wall and the second side wall are fixedly connected to form an accommodating cavity, the second side wall forms a first ink thinning channel, and the first ink thinning channel includes a first inlet and a first outlet that communicate with each other. The distance between the bottom plates is greater than the distance between the first outlet and the bottom plate, the first inlet is communicated with the ink storage chamber, the first outlet is communicated with the accommodating chamber, and the first An ink thinning channel guides the ink into the accommodating chamber when the ink in the ink storage chamber is located at the first inlet. The ink cartridge according to claim 1, wherein an ink outlet tube communicated with the ink storage chamber is fixed on the outer side of the first side wall. The ink cartridge according to claim 1, wherein the preset distance is thirty centimeters. The ink cartridge according to claim 1, further comprising at least one fourth side wall extending from the inner side of the third side wall to the fixing seat, the at least one fourth side wall dividing the accommodating cavity A plurality of accommodating areas adjacent to each other are formed, and the plurality of accommodating areas are communicated with each other. The ink cartridge of claim 4, wherein the ink cartridge includes four fourth side walls, and the four fourth side walls divide the accommodating cavity into five accommodating areas. The ink cartridge of claim 4, wherein each of the fourth side walls forms a second ink thinning channel, each of the second ink thinning channels includes a second inlet and a second outlet that communicate with each other, and each of the second ink thinning channels includes a second inlet and a second outlet. The second inlet communicates with one of the accommodating areas, and each of the second outlets communicates with the other accommodating area. The ink cartridge according to claim 4, wherein the ink cartridge further comprises a sealing member, and the sealing member is fixed on the end faces of the first side wall, the second side wall, the third side wall and the fourth side wall away from the bottom plate superior. The ink cartridge according to claim 7, wherein a through hole is formed on the end surface of the first side wall away from the bottom plate, and the external atmospheric pressure flows into the accommodating cavity, the ink storage cavity and the air guide port through the through hole Connected. The ink cartridge according to claim 7, wherein the sealing member is a thin film, and the thin film is fixed on the end faces of the first side wall, the second side wall, the third side wall and the fourth side wall away from the bottom plate superior.

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