Sealing device and ink box

Abstract

The utility model provides a sealing device and an ink box, the sealing device comprises a connecting piece, a pump cap and a pressing block, the connecting piece comprises a tubular column portion, and one end of the tubular column portion is a mounting end face; the pump cap is arranged on the mounting end face, and part of the pump cap is configured to reciprocate in the first direction; one part of the pressing block is fixedly connected with the tubular column part, and the other part of the pressing block and the tubular column part jointly act to fix the pump cap. The utility model provides a sealing device and an ink box, which are used for solving the technical problem that a pump cap is easy to fall off in multiple reciprocating motion processes.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to a sealing device and an ink cartridge. Background Art

[0002] In the field of inkjet imaging, ink cartridges, as printer accessories, are used to store ink and are responsible for supplying ink to the print head. The quality of the ink cartridges will directly affect the printing effect of the inkjet printer.

[0003] In some ink cartridges, the pump cap stores ink. When the ink in the ink storage chamber of the ink cartridge is used up, the ink in the pump cap will be supplied to the printer. After the ink cartridge is installed in the printer, the printer's detection rod will continuously hit the pump cap of the ink cartridge to detect the remaining ink in the ink cartridge. However, due to the high frequency of reciprocating motion of the pump cap, it is easy for the pump cap to detach from the ink cartridge, causing ink leakage, which not only wastes resources but also pollutes the environment.

[0004] Therefore, it is urgent to solve the problem that the pump cap is easy to fall off during multiple reciprocating motions. Utility Model Content

[0005] The utility model provides a sealing device and an ink cartridge, which are used to solve the technical problem that a pump cap is easy to fall off during multiple reciprocating motions.

[0006] In order to achieve the above object, the utility model provides a sealing device, comprising:

[0007] A connecting piece, the connecting piece comprising a pipe column portion, one end of the pipe column portion being a mounting end surface;

[0008] A pump cap, the pump cap is arranged on the mounting end surface, and a portion of the pump cap is configured to reciprocate along a first direction;

[0009] A pressure block, a part of which is fixedly connected to the pipe column portion, and another part of which cooperates with the pipe column portion to fix the pump cap.

[0010] The utility model provides a sealing device, which can prevent the pressure block from loosening or falling off by fixing a part of the pressure block with the tube column part, thereby improving the stability of the pressure block fixation, thereby ensuring that the pressure block stably works together with the tube column part, improving the stability of the pump cap fixation, helping to improve the sealing effect of the pump cap edge, and solving the problem that the pump cap is prone to falling off during multiple reciprocating motions, thereby avoiding the problem of ink leakage.

[0011] In a possible implementation, the pump cap includes a cap body and a flange portion connected to the edge of the cap body, the pressure block includes an extrusion portion and a fixing portion, the fixing portion is further away from the central axis of the column portion than the extrusion portion, a through hole is provided inside the extrusion portion for exposing the cap body, and the extrusion portion is pressed against a side of the flange portion that is away from the mounting end surface;

[0012] The fixing portion is connected to the mounting end surface by welding.

[0013] In one possible implementation, the flange portion includes a sealing portion, which is U-shaped, a groove is provided in the mounting end surface, the sealing portion extends into the groove, a first annular groove is provided in the sealing portion, and the extrusion portion includes a first protrusion embedded in the first annular groove.

[0014] In a possible implementation, the flange portion further includes a transition portion, the transition portion is connected between the sealing portion and the cap body, an angle cavity is formed between the transition portion and the sealing portion, and an angle θ of the angle cavity satisfies 0°<θ<90°;

[0015] The mounting end surface also has a supporting portion, and the supporting portion extends into the angle cavity.

[0016] In a possible implementation, a second annular groove is formed between the transition portion and the outer wall surface of the cap body, and the extrusion portion further includes a second protrusion embedded in the second annular groove.

[0017] In a possible implementation, along the first direction: the distance between the bottom of the sealing portion and the mounting end surface is H1, the distance between the connection position between the transition portion and the cap body and the mounting end surface is H2, H1>H2;

[0018] Along the first direction: the distance between the connection position of the sealing portion and the transition portion and the top end surface of the cap body is H3, the distance between the top end of a section of the sealing portion away from the transition portion and the top end surface of the cap body is H4, H4>H3.

[0019] In a possible implementation, the bottom wall thickness of the sealing portion is greater than the wall thickness of the transition portion.

[0020] In a possible implementation, the top of a section of the sealing portion away from the transition portion is located in the groove, and a distance H5 between the top of the section of the sealing portion away from the transition portion and the mounting end surface satisfies: H5>0.

[0021] The utility model also provides an ink cartridge, comprising a shell and the above-mentioned sealing device, wherein a connecting piece of the sealing device is arranged in the shell to form an ink storage cavity in the shell.

[0022] In one possible implementation, the tubular column portion of the sealing device and the pump cap of the sealing device jointly form a detection chamber, and the connecting member further has a connecting channel, and the connecting channel is connected between the ink storage chamber and the detection chamber.

[0023] In one possible implementation, the ink cartridge also includes an elastic member, which is arranged between the pump cap and the bottom wall of the detection chamber, the inner wall of the pump cap is provided with a convex column, the bottom wall of the detection chamber is provided with a fixed column, and the two ends of the elastic member are respectively mounted on the fixed column and the convex column.

[0024] The utility model provides a sealing device and ink cartridge, which are fixedly connected to the tube column portion by the fixing portion, thereby improving the stability of the fixing of the pressure block, so that the mounting end faces of the pressure block and the connecting piece jointly squeeze the flange portion of the pump cap, thereby improving the stability of the installation of the pump cap and solving the problem that the pump cap is prone to falling off during multiple reciprocating motions. Therefore, after the ink cartridge is installed in the printer, the problem of the pump cap falling off is avoided during the process of the printer pressure detection device striking the pump cap multiple times, thereby avoiding the problems of ink leakage, waste, pollution, etc. caused by the falling off of the pump cap.

[0025] In addition to the technical problems solved by the embodiments of the utility model described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of the technical solutions, other technical problems that can be solved by a sealing device and an ink cartridge provided by the embodiments of the utility model, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the three-dimensional structure of an ink cartridge provided by an embodiment of the utility model;

[0028] Figure 2 An exploded view of an ink cartridge provided by an embodiment of the utility model;

[0029] Figure 3A cross-sectional view of an ink cartridge provided by an embodiment of the utility model;

[0030] Figure 4 for Figure 3 A magnified view of the structure at A;

[0031] Figure 5 A schematic diagram of a half-section structure of an exploded view of a sealing device provided in an embodiment of the utility model;

[0032] Figure 6 A schematic diagram of a partial half-section structure of another exploded view of the sealing device provided in an embodiment of the utility model;

[0033] Figure 7 A schematic diagram of the three-dimensional structure of a sealing device provided in an embodiment of the utility model;

[0034] Figure 8 A schematic diagram of a half-section structure of a sealing device provided in an embodiment of the utility model;

[0035] Fig. 9 A schematic diagram of a half-section structure of a pump cap of a sealing device provided in an embodiment of the utility model;

[0036] Fig.10 Another cross-sectional view of the ink cartridge provided by the embodiment of the utility model;

[0037] Fig.11 A schematic diagram of a half-section structure of a connecting piece of a sealing device provided in an embodiment of the utility model;

[0038] Fig.12 A schematic diagram of a half-section structure of a pressure block and a pump cap of a sealing device provided in an embodiment of the utility model;

[0039] Fig.13 A schematic diagram of the three-dimensional structure of a pump cap of a sealing device provided in an embodiment of the utility model;

[0040] Fig.14 A schematic diagram of a half-section structure of a pump cap of a sealing device provided in an embodiment of the utility model;

[0041] Fig.15 A schematic diagram of the three-dimensional structure of a pressure block of another sealing device provided in an embodiment of the utility model;

[0042] Fig.16 A partial three-dimensional structural diagram of a pressure block, a pump cap and a connecting piece of another sealing device provided in an embodiment of the utility model;

[0043] Fig.17 A cross-sectional view of another sealing device provided in an embodiment of the utility model at a buckle position;

[0044] Fig.18for Fig.17 Enlarged view of the structure at B.

[0045] Description of reference numerals:

[0046] 10-Connector;

[0047] 11- pipe string;

[0048] 111-card slot;

[0049] 112-card convex;

[0050] 12-installation end face;

[0051] 121-groove;

[0052] 122-supporting part;

[0053] 13- detection chamber;

[0054] 131-fixed column;

[0055] 132-connecting channel;

[0056] 14- baffle;

[0057] 141-liquid inlet pipe;

[0058] 142-Drain pipe;

[0059] 143-seal ring;

[0060] 15- stirring shaft;

[0061] 16-Piston;

[0062] 20- pump cap;

[0063] 21-Deformation space;

[0064] 22-Cap body;

[0065] 23- flanging portion;

[0066] 231-Transition Department;

[0067] 232- sealing part;

[0068] 2321-1st paragraph;

[0069] 2322-Second paragraph;

[0070] 2323-3rd paragraph;

[0071] 233-first ring groove;

[0072] 234-second ring groove;

[0073] 235-angle cavity;

[0074] 24-convex column;

[0075] 30-briquetting;

[0076] 31-extrusion part;

[0077] 311- first protrusion;

[0078] 312- second protrusion;

[0079] 32-fixed part;

[0080] 33-through hole;

[0081] 34- buckle;

[0082] 40-housing;

[0083] 41- ink storage chamber;

[0084] 42-installation cavity;

[0085] 50-elastic member;

[0086] 60-cover body;

[0087] 61-hollow hole;

[0088] 62-Drain hole. DETAILED DESCRIPTION

[0089] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0090] Inkjet printers usually use ink cartridges as the ink source to provide ink. The ink is transported to the fluid inlet of the printer through the corresponding drainage pipe in the ink cartridge. The printer receives the print signal and sprays the ink from the nozzles set on the recording head of the printer onto the paper to complete the recording of characters or graphics.

[0091] However, when the ink cartridge is in use, the pump cap of the ink cartridge is hit repeatedly by the pressure detection device of the printer, and the pump cap is prone to fall off, causing ink leakage and affecting the use of the ink cartridge.

[0092] In view of this, the utility model provides a sealing device, which arranges a pressure block on the mounting end face, and the edge of the pump cap extends between the pressure block and the mounting end face, so that the pressure block and the mounting end face of the connecting piece jointly squeeze the edge of the pump cap, thereby improving the stability of the pump cap installation, helping to improve the sealing effect of the pump cap edge, and solving the problem that the pump cap is prone to falling off during multiple reciprocating motions, thereby avoiding the problem of ink leakage.

[0093] The sealing device and ink cartridge provided by the embodiments of the present utility model are described below with reference to the accompanying drawings.

[0094] refer to Figure 1 and Figure 2 As shown, the utility model provides a sealing device, including: a connecting piece 10, a pump cap 20 and a pressure block 30, the connecting piece 10 includes a pipe column part 11, one end of the pipe column part 11 is a mounting end surface 12, the pump cap 20 is arranged on the mounting end surface 12, and part of the pump cap 20 is configured to reciprocate along a first direction; a part of the pressure block 30 is fixedly connected to the pipe column part 11, and the other part of the pressure block 30 works together with the pipe column part 11 to fix the pump cap 20.

[0095] The utility model provides a sealing device, in which a part of the pressure block 30 is fixedly connected to the tube column part 11, thereby improving the stability of the fixation of the pressure block 30 and preventing the pressure block 30 from loosening or falling off. The other part of the pressure block 30 works together with the tube column part 11 to fix the pump cap 20, thereby ensuring that the pressure block 30 stably works together with the tube column part 11, improving the stability of the installation of the pump cap 20, helping to improve the sealing effect of the edge of the pump cap 20, and solving the problem that the pump cap 20 is prone to falling off during multiple reciprocating motions, thereby avoiding the problem of ink leakage.

[0096] The pipe column part 11 has an inner cavity at the installation end surface 12 . The pipe column part 11 and the pump cap 20 of the sealing device together form a detection cavity 13 , and the inner cavity is a part of the detection cavity 13 .

[0097] In one possible implementation, reference Figure 3 , Figure 4 and Figure 5 As shown, the pressing block 30 includes a pressing portion 31 and a fixing portion 32. The fixing portion 32 is further away from the central axis of the pipe column portion 11 than the pressing portion 31, that is, the fixing portion 32 is connected to the side of the pressing portion 31 away from the detection chamber 13, and the pressing portion 31 presses against the edge of the pump cap 20 to fix the pump cap 20 together with the pipe column portion 11. The central axis of the pipe column portion 11 is an axis passing through the center position of the pipe column portion 11 along the axial direction of the pipe column portion 11. For example, if the pipe column portion 11 is cylindrical, the central axis of the pipe column portion 11 is the center line of the circle.

[0098] In this example, the first direction reference Figure 3The direction indicated by the arrow Y in is the height direction of the pump cap 20 , and is also the depth direction of the detection cavity 13 .

[0099] In one possible implementation, the fixing portion 32 is welded to the mounting end face 12. The welding connection makes the pressure block 30 non-detachable, helps to improve the stability of the fixed connection between the pressure block 30 and the column portion 11, and avoids the problem of the pressure block 30 loosening and causing the edge of the pump cap 20 to fall off, thereby avoiding the problem of ink leakage.

[0100] In a possible implementation, the fixing portion 32 may be fixed to the mounting end surface 12 by welding. For example, ultrasonic welding is used to stably fix the fixing portion 32 to the mounting end surface 12, so that the extrusion portion 31 keeps extruding the flange portion 23 of the pump cap 20. When the pump cap 20 is extruded by the pressure detection device of the printer, the cap body 22 is prevented from driving the flange portion 23 away from the mounting end surface 12, thereby ensuring a sealing effect.

[0101] Of course, in other possible implementations, the fixing portion 32 may also be fixed to the mounting end surface 12 by adhesive bonding or the like.

[0102] Compared with the situation where the pressure block 30 can be disassembled, in the present application, the pressure block 30 is fixedly connected to the column portion 11, and the stability of the fixation of the pressure block 30 is greatly improved, which can prevent the pressure block 30 from loosening or falling due to the reciprocating motion of the pump cap 20 along the first direction, thereby ensuring that the pressure block 30 stably acts together with the column portion 11 on the edge of the pump cap 20, achieving a stable sealing effect, ensuring the normal use of the ink cartridge, and avoiding leakage caused by failure of the edge seal of the pump cap 20.

[0103] In a possible implementation, the pressing block 30 may be an integral structure formed in one piece, and the pressing block 30 may be made of plastic material, or other materials.

[0104] The utility model provides a sealing device, wherein the detection cavity 13 can increase the pressure to supply ink to the printer.

[0105] In this example, refer to Figure 5 and Figure 6 As shown, the opening of the detection cavity 13 is located at the mounting end surface 12. By arranging the pump cap 20 on the mounting end surface 12, the pump cap 20 seals the opening of the detection cavity 13, thereby preventing the ink stored in the detection cavity 13 from leaking from the opening.

[0106] In a possible implementation, the pump cap 20 is a flexible member, such as rubber or silicone, and is used to transmit the pressure from the pressure detection device of the printer. In this example, the pressure detection device of the printer is a detection rod.

[0107] When the pump cap 20 is hit by the pressure detection device of the printer, the top of the pump cap 20 is deformed and reciprocates in the height direction of the pump cap 20. The top of the pump cap 20 moves toward the mounting end face 12, so that the volume of the detection cavity 13 becomes smaller, and the ink in the detection cavity 13 is squeezed out to supply ink.

[0108] Since the pump cap 20 is soft and elastic, after the pressure detection device stops hitting the pump cap 20 , the pump cap 20 can be restored to its state before deformation under its own elastic force, and the volume in the detection chamber 13 is restored, making it convenient for the pressure detection device to repeatedly hit the pump cap 20 .

[0109] refer to Figure 7 and Figure 8 As shown, the cross section of the column portion 11 may be elliptical or rectangular, etc., and the column portion 11 closes the circumference of the detection cavity 13 .

[0110] In one possible implementation, reference Figure 6 and Figure 7 As shown, the pump cap 20 includes a cap body 22 and a flange portion 23 connected to the edge of the cap body 22, a through hole 33 is opened inside the extrusion portion 31 for the cap body 22 to be exposed, and the extrusion portion 31 presses against the side of the flange portion 23 facing away from the mounting end surface 12; the flange portion 23 abuts against the mounting end surface 12, and the extrusion portion 31 presses against the side of the flange portion 23 facing away from the mounting end surface 12, and the cap body 22 is penetrated in the through hole 33. The through hole 33 is used for the cap body 22 to pass through.

[0111] In a possible implementation, the fixing portion 32 is disposed around a side of the extrusion portion 31 facing away from the through hole 33 , and the fixing portion 32 fixes the pressing block 30 to the mounting end surface 12 .

[0112] In a possible implementation, the through hole 33 may be, for example, a circular hole, a rectangular hole, or an elliptical hole.

[0113] In this example, the cap body 22 and the flange portion 23 are an integrally connected structure. The flange portion 23 is soft and elastic, and the extrusion portion 31 and the mounting end surface 12 jointly extrude the flange portion 23, thereby reducing the gap between the flange portion 23 and the mounting end surface 12, which can not only improve the sealing effect of a sealing device provided by the utility model, but also help prevent the pump cap 20 from falling off.

[0114] refer to Figure 8 and Fig.13As shown, the cap body 22 is arched in the direction away from the detection cavity 13, thereby forming a deformation space 21 inside the cap body 22. The flange portion 23 can be formed by turning the edge of the cap body 22 outward. The flange portion 23 is arranged along the edge of the cap body 22, so that the edge of the cap body 22 can achieve an all-round sealing effect. The flange portion 23 also plays a role in supporting the cap body 22.

[0115] In a possible implementation, the extrusion portion 31 is annular, such as a rectangular ring or a circular ring, and the through hole 33 is located in a central area of ​​the extrusion portion 31 .

[0116] In one possible implementation, reference Figure 6 and Figure 7 As shown, the flange portion 23 includes a sealing portion 232, the sealing portion 232 is U-shaped, a groove 121 is provided in the mounting end surface 12, the sealing portion 232 extends into the groove 121, a first annular groove 233 is provided in the sealing portion 232, and the extrusion portion 31 includes a first protrusion 311 embedded in the first annular groove 233. The first annular groove 233 is located on the side of the sealing portion 232 facing the pressing block 30.

[0117] Such a structure, by embedding the first protrusion 311 in the first annular groove 233 and embedding the sealing portion 232 in the groove 121, makes the first protrusion 311 and the inner wall of the groove 121 jointly squeeze the sealing portion 232, which greatly increases the difficulty of the flange portion 23 to escape from between the mounting end face 12 and the pressure block 30. Under the squeezing action of the first protrusion 311 on the sealing portion 232, the sealing portion 232 itself undergoes elastic deformation and fills the gap between the first protrusion 311 and the groove 121, thereby achieving a sealing effect, and also helps to increase the stability of the fixing of the flange portion 23. When the pump cap 20 is squeezed, the flange portion 23 is prevented from being displaced by the cap body 22, thereby ensuring the sealing performance.

[0118] In a possible implementation, the longitudinal section of the sealing portion 232 is substantially U-shaped. The opening of the first annular groove 233 faces the pressing block 30, so as to facilitate embedding the first protrusion 311 in the first annular groove 233. The longitudinal section of the first annular groove 233 is substantially U-shaped.

[0119] The first protrusion 311 protrudes from a surface of the extrusion portion 31 facing the mounting end surface 12 , and protrudes toward the mounting end surface 12 .

[0120] In one possible implementation, the flange portion 23 also includes a transition portion 231, which is connected between the sealing portion 232 and the cap body 22, and an angle cavity 235 is formed between the transition portion 231 and the sealing portion 232, and an angle θ of the angle cavity 235 satisfies 0°<θ<90°; the mounting end face 12 also has a support portion 122, and the support portion 122 extends into the angle cavity 235.

[0121] In a possible implementation, the angle θ of the angle cavity 235 may be, for example, 30°, 45°, 50°, 60° or 70°, etc. The opening of the angle cavity 235 faces the mounting end surface 12 .

[0122] In one possible implementation, the transition portion 231 is connected between the edge of the cap body 22 and the sealing portion 232 , a second annular groove 234 is formed between the transition portion 231 and the outer wall surface of the cap body 22 , and the extrusion portion 31 also includes a second protrusion 312 embedded in the second annular groove 234 .

[0123] By providing the transition portion 231 and embedding the second protrusion 312 in the second annular groove 234, the squeezing effect of the pressure block 30 on the flange portion 23 is increased, and the stability of the fixation of the flange portion 23 is improved. When the cap body 22 is hit by the pressure detection device of the printer, the movement of the cap body 22 can be prevented from being transmitted to the sealing portion 232, thereby avoiding the movement of the sealing portion 232 and increasing the sealing effect. Especially when the cap body 22 is compressed and rebounds, when the cap body 22 is subjected to an upward rebound force, the squeezing effect of the second protrusion 312 on the transition portion 231 can effectively prevent the transition portion 231 from rebounding with the cap body 22, thereby improving the stability of the fixation of the pump cap 20.

[0124] In one possible implementation, the second annular groove 234 surrounds the outer wall of the cap body 22 , and the longitudinal section of the second annular groove 234 may be “V”-shaped or “U”-shaped, and the cross-sectional shape of the second protrusion 312 is adapted to the longitudinal cross-sectional shape of the second annular groove 234 .

[0125] The opening of the second annular groove 234 faces the pressing block 30 , and the second protrusion 312 protrudes from the side of the extrusion portion 31 facing the mounting end surface 12 and protrudes toward the mounting end surface 12 , so as to facilitate embedding the second protrusion 312 in the second annular groove 234 .

[0126] In this example, the second protrusion 312 and the first protrusion 311 are arranged at intervals from each other. Compared with the first protrusion 311 , the second protrusion 312 is closer to the through hole 33 .

[0127] In one possible implementation, reference Figure 6 , Figure 8 and Fig. 9 As shown, the sealing portion 232 includes a first section 2321, a second section 2322 and a third section 2323 connected in sequence, the first section 2321 and the third section 2323 are respectively the opposite side walls of the first annular groove 233, and the second section 2322 is configured as the bottom wall of the first annular groove 233; the transition portion 231 is connected to an end of the first section 2321 away from the second section 2322, and an angle cavity 235 is formed between the transition portion 231 and the first section 2321.

[0128] The transition portion 231 is inclined relative to the side wall of the cap body 22 and is also inclined relative to the first section 2321 , so that the angle of the angle cavity 235 formed between the transition portion 231 and the first section 2321 is less than 90°.

[0129] It is easy to understand that, from the edge of the cap body 22 to the outside of the cap body 22 , the transition portion 231 , the first section 2321 , the second section 2322 and the third section 2323 are connected in sequence.

[0130] When the cap body 22 is squeezed by the pressure detection device of the printer, the angle cavity 235 can hinder the sealing portion 232 from moving toward the cap body 22 to prevent the pump cap 20 from falling off, thereby increasing the sealing performance of the sealing device.

[0131] In one possible implementation, reference Fig.11 and Fig.12 As shown, the mounting end surface 12 further has a supporting portion 122 , and the supporting portion 122 extends into the angle cavity 235 .

[0132] In this example, the support portion 122 is a side wall of the groove 121 , and the support portion 122 plays a role in supporting the angle cavity 235 , so that the angle cavity 235 maintains a certain angle.

[0133] When the cap body 22 is squeezed by the pressure detection device of the printer, when the cap body 22 moves along the first direction toward the detection cavity 13, the support portion 122 and the transition portion 231 and the first section 2321 are squeezed against each other, which can effectively prevent the flange portion 23 of the pump cap 20 from being moved by the cap body 22, thereby improving the stability of the fixation of the flange portion 23 and ensuring the sealing effect.

[0134] In one possible implementation, reference Figure 4 As shown, along the first direction: the distance between the bottom of the sealing portion 232 and the mounting end surface 12 is H1, and the distance between the connection position between the transition portion 231 and the cap body 22 and the mounting end surface 12 is H2, H1>H2; that is, along the first direction, the bottom of the second section 2322 is lower than the connection position between the transition portion 231 and the cap body 22; such a structure can hinder the sealing portion 232 from moving toward the direction close to the cap body 22 when the cap body 22 is squeezed by the pressure detection device of the printer, so as to prevent the pump cap 20 from falling off, thereby ensuring the sealing effect.

[0135] In one possible implementation, reference Fig.14As shown, along the first direction, i.e., the direction indicated by the Y axis: the distance between the connection position of the sealing portion 232 and the transition portion 231 and the top surface of the cap body 22 is H3, and the distance between the top of a section of the sealing portion 232 away from the transition portion 231 and the top surface of the cap body 22 is H4, H4>H3. This helps to improve the sealing effect and prevent the sealing portion 232 from being separated from the groove 121. In this example, the section of the sealing portion 232 away from the transition portion 231 is the third section 2323.

[0136] In a possible implementation, the bottom wall thickness of the sealing portion 232 is greater than the wall thickness of the transition portion 231, that is, the wall thickness of the second section 2322 is greater than the wall thickness of the transition portion 231. When the sealing device is installed, since the bottom wall thickness of the sealing portion 232 is relatively thick, it is helpful to completely fill the gap between the first protrusion 311 and the groove 121. When the cap body 22 is squeezed by the pressure detection device of the printer, the sealing portion 232 is difficult to move between the pressing block 30 and the mounting end surface 12, so that the sealing portion 232 is stably locked between the pressing block 30 and the groove 121 of the mounting end surface 12, thereby improving the sealing effect.

[0137] In one possible implementation, reference Fig.15 , Fig.16 and Fig.18 As shown, the pressing block 30 further includes a buckle 34 , and the buckle 34 may be connected to a side of the fixing portion 32 opposite to the pressing portion 31 , that is, the buckle 34 is connected to an outer side wall of the fixing portion 32 .

[0138] In one possible implementation, the outer wall surface of the tubular column portion 11 has at least one of a slot 111 and a protrusion 112. The buckle 34 can be snapped into the slot 111, and the buckle 34 can also be blocked by the protrusion 112 to prevent the buckle 34 from falling out. Of course, the buckle 34 can also be snapped into the slot 111 and blocked by the protrusion 112 at the same time, thereby improving the effect of preventing the buckle 34 from falling out.

[0139] By snapping the buckle 34 into the slot 111 or the mutual blocking effect between the buckle 34 and the protrusion 112, the relative fixation of the pressure block 30 and the pipe column part 11 can be easily achieved during the production process, avoiding the pressure block 30 and the pump cap 20 from falling off the connecting piece 10 during the production and assembly process, thereby ensuring the smooth progress of the production and assembly process.

[0140] In this example, the protrusion 112 is a raised structure protruding from the outer wall of the column portion 11, and the bottom end of the buckle 34 has a hook portion, which is hooked on the bottom of the protrusion 112, or the hook portion is hooked on the edge of the slot 111, so that the pressure block 30 and the column portion 11 can be relatively fixed.

[0141] In one possible implementation, reference Fig.17and Fig.18 As shown, the top of the section of the sealing portion 232 away from the transition portion 231 is located in the groove 121, and the distance H5 between the top of the section of the sealing portion 232 away from the transition portion 231 and the mounting end surface 12 satisfies: H5>0. The top of the section of the sealing portion 232 away from the transition portion 231 is the top of the third section 2323.

[0142] Such a structure allows a reserved space not filled by the sealing portion 232 to be reserved in a section of the groove 121 away from the detection cavity 13. The reserved space in the groove 121 can be used to accommodate the welding material of the pressure block 30 and the pipe column 11, on the one hand, to prevent the welding material from overflowing or the height of the protruding mounting end face 12 from being too thick, which affects the use effect, thereby improving the stability of the welding connection between the pressure block 30 and the pipe column 11. On the other hand, when the flange portion 23 is squeezed by the pressure block 30, the sealing portion 232 can be deformed into the reserved space in the groove 121, preventing the sealing portion 232 from being crushed and causing an incomplete seal.

[0143] In addition, by controlling H5>0, it is possible to prevent the top end of the third section 2323 from protruding to the upper side of the installation end face 12, thereby preventing the third section 2323 from lifting the pressure block 30 and causing an unstable connection between the pressure block 30 and the column portion 11; it is also possible to prevent the first protrusion 311 from colliding with the outer wall of the third section 2323 during installation, thereby avoiding the phenomenon that both the third section 2323 and the first section 2321 are located on the inner side of the first protrusion 311, which helps to smoothly install the first protrusion 311 into the first annular groove 233 between the third section 2323 and the first section 2321, reduce the problem of installation errors, ensure the installation effect, and thus ensure stable sealing.

[0144] In one possible implementation, H5 may be, for example, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, etc.

[0145] refer to Fig.10 As shown, the utility model further provides an ink cartridge, comprising a shell 40 and the above-mentioned sealing device, wherein a connecting member 10 of the sealing device is disposed in the shell 40 to form an ink storage chamber 41 in the shell 40 .

[0146] In one possible implementation, reference Figure 8 and Fig.10As shown, the ink cartridge provided by the utility model further includes an elastic member 50, which is arranged between the pump cap 20 of the sealing device and the bottom wall of the detection chamber 13, the inner wall of the pump cap 20 is provided with a convex column 24, the bottom wall of the detection chamber 13 is provided with a fixing column 131, and the two ends of the elastic member 50 are respectively sleeved on the fixing column 131 and the convex column 24. The elastic member 50 can be prevented from tilting or falling, and the elastic member 50 increases the resilience of the pump cap 20.

[0147] Specifically, the elastic member 50 is disposed between the cap body 22 and the bottom wall of the detection cavity 13 .

[0148] refer to Fig.13 As shown, the convex column 24 is disposed on a side of the cap body 22 facing the detection cavity 13 , and the convex column 24 and the cap body 22 may be an integral structure connected in one piece.

[0149] When the cap body 22 of the pump cap 20 is hit by the pressure detection device of the printer, the cap body 22 is deformed, and the cap body 22 squeezes the elastic member 50, so that the elastic member 50 is compressed. After the pressure detection device stops hitting the cap body 22, the elastic member 50 can lift up the cap body 22 under the action of its own elastic force, thereby improving the deformation recovery effect of the cap body 22 and helping the cap body 22 to recover quickly after being hit.

[0150] In order to improve the stability of the installation of the elastic member 50, a fixing column 131 is provided on the bottom wall of the detection cavity 13, and a convex column 24 is provided on the inner wall of the pump cap 20. The two ends of the elastic member 50 are respectively mounted on the fixing column 131 and the convex column 24. The two ends of the elastic member 50 can be interference fit with the fixing column 131 and the convex column 24 respectively. During the reciprocating motion of the cap body 22, the elastic member 50 can be effectively prevented from falling off, thereby improving the stability of use.

[0151] In a possible implementation, the elastic member 50 may be, for example, a compression spring or an elastic sleeve.

[0152] In one possible implementation, the housing 40 may be made of polypropylene to provide a strong protective effect and prevent water loss from the ink.

[0153] The utility model provides an ink cartridge, wherein one end of a shell 40 has a cover 60, and the cover 60 can be mutually buckled with the shell 40, for example, connected by a snap-fit ​​structure, or the cover 60 can be mutually connected with the shell 40 by screws.

[0154] In a possible implementation, the housing 40 may be in a bottle shape.

[0155] In one possible implementation, the connector 10 includes a tubular column portion 11 and a baffle 14 disposed at the edge of the tubular column portion 11, the edge of the baffle 14 abuts against the inner wall surface of the shell 40, and the baffle 14 separates the interior of the shell 40 into an ink storage chamber 41 and an installation chamber 42, the tubular column portion 11 is located in the installation chamber 42, and the ink storage chamber 41 is used to store ink.

[0156] refer to Figure 1 and Figure 2 As shown, the cover body 60 has a hollow hole 61, and the top of the cap body 22 is exposed to the outside of the ink cartridge through the hollow hole 61. After the ink cartridge is installed in the printer, it is convenient for the printer pressure detection device to hit the cap body 22 of the pump cap 20.

[0157] refer to Figure 2 and Figure 3 As shown, the baffle 14 is connected with a liquid inlet pipe 141 and a liquid discharge pipe 142. When the ink in the ink storage chamber 41 is exhausted, the ink can be refilled through the liquid inlet pipe 141. A liquid discharge hole 62 is also provided in the cover body 60. One end of the liquid discharge pipe 142 is connected with the detection chamber 13, and the other end of the liquid discharge pipe 142 is exposed through the liquid discharge hole 62 provided in the cover body 60. The liquid discharge pipe 142 is used to connect with the fluid inlet of the printer, and a sealing ring 143 is provided at the other end of the liquid discharge pipe 142. When the ink cartridge is installed in the printer, the burr set at the fluid inlet position of the printer will pierce the sealing ring 143, so that the liquid discharge pipe 142 supplies ink to the printer through the fluid inlet of the printer. When the ink cartridge is taken out, the sealing ring 143 will seal the internal pierced hole under its own elastic action.

[0158] In order to ensure that the ink cartridge can supply ink smoothly, the printer will apply suction force to hit the pump cap 20, so that the ink in the detection chamber 13 flows out from the drainage pipe 142, and negative pressure is formed in the detection chamber 13, which makes it easier for the ink stored in the ink storage chamber 41 to flow smoothly into the detection chamber 13, thereby ensuring the amount of ink in the detection chamber 13.

[0159] In order to detect the amount of ink, the printer has a detection unit, which includes a light emitting part and a light receiving part. The detection rod of the printer is connected to a shielding plate, which can make the light receiving part receive light or not receive light. The movement of the detection rod can achieve the impact of the pump cap.

[0160] The connecting member 10 further includes a stirring shaft 15 connected to the baffle 14 , and the stirring shaft 15 extends into the ink storage chamber 41 .

[0161] The tubular column portion 11 and the pump cap 20 of the sealing device jointly form a detection chamber 13. The connecting piece 10 also has a connecting channel 132. The connecting channel 132 connects the ink storage chamber 41 and the detection chamber 13 of the sealing device. In this example, the connecting channel 132 is located on the bottom wall of the detection chamber 13. A piston 16 is arranged in the connecting channel 132. The movement of the piston 16 realizes the connection between the ink storage chamber 41 and the detection chamber 13.

[0162] When the printer is not performing a printing operation, the detection chamber 13 is filled with ink, the elastic member 50 is in a free state, the pump cap 20 cooperates with the mounting end surface 12 to seal the detection chamber 13, and the communication channel 132 is in a closed state under the action of the piston 16. During printing, the communication channel 132 is in an open state under the action of the piston 16, and the ink in the ink storage chamber 41 enters the detection chamber 13 through the communication channel 132, and then flows to the fluid inlet of the printer through the discharge pipe 142 to realize ink supply.

[0163] Through the position of the printer pressure detection device, it can detect when the ink cartridge is close to empty and issue an ink shortage warning. This can significantly extend the life of the print head by preventing the ink nozzle from "empty" firing.

[0164] The one-way valve in the discharge pipe 142 serves to limit the ink flowing to the fluid inlet of the printer from returning to the detection chamber 13.

[0165] The utility model provides a sealing device and ink cartridge, which are fixedly connected to the mounting end face 12 of the pipe column portion 11 by a pressing block 30, thereby preventing the pressing block 30 from loosening or falling off, so that the pressing block 30 can stably squeeze the flange portion 23 of the pump cap 20 together with the mounting end face 12 of the connector 10, thereby improving the stability of the installation of the pump cap 20 and solving the problem that the pump cap 20 is prone to falling off during multiple reciprocating motions. Therefore, after the ink cartridge is installed in the printer, the pump cap 20 is prevented from falling off during the process of the printer pressure detection device hitting the pump cap 20 multiple times, thereby avoiding the problems of ink leakage, waste, pollution, etc. caused by the falling off of the pump cap 20.

[0166] In the description of the present invention, it should be understood that the terms used, such as “center”, “length”, “width”, “thickness”, “top”, “bottom”, “up”, “down”, “left”, “right”, “front”, “back”, “vertical”, “horizontal”, “inside”, “outside”, “axial”, “circumferential”, etc., to indicate directions or positional relationships are based on the directions 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 position or component referred to must have a specific direction, a specific structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0167] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0168] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected, electrically connected, or can communicate with each other; they can be directly connected, or indirectly connected through an intermediate medium, so that the internal communication of two elements or the interaction relationship between two elements can be achieved. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0169] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0170] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A sealing device, characterized in that: include: A connecting piece (10), the connecting piece (10) comprising a pipe column portion (11), one end of the pipe column portion (11) being a mounting end surface (12); A pump cap (20), the pump cap (20) being arranged on the mounting end surface (12), and a portion of the pump cap (20) being configured to reciprocate along a first direction; A pressing block (30), a portion of which is fixedly connected to the pipe column portion (11), and another portion of which cooperates with the pipe column portion (11) to fix the pump cap (20).

2. The sealing device according to claim 1, characterized in that: The pump cap (20) comprises a cap body (22) and a flange portion (23) connected to the edge of the cap body (22); the pressure block (30) comprises an extrusion portion (31) and a fixing portion (32); the fixing portion (32) is further away from the central axis of the pipe column portion (11) than the extrusion portion (31); a through hole (33) is provided inside the extrusion portion (31) for exposing the cap body (22); the extrusion portion (31) is pressed against a side of the flange portion (23) that is opposite to the mounting end surface (12); The fixing portion (32) is connected to the mounting end surface (12) by welding.

3. The sealing device according to claim 2, characterized in that: The flange portion (23) comprises a sealing portion (232), the sealing portion (232) is U-shaped, a groove (121) is provided in the mounting end surface (12), the sealing portion (232) extends into the groove (121), a first annular groove (233) is provided in the sealing portion (232), and the extrusion portion (31) comprises a first protrusion (311) embedded in the first annular groove (233).

4. The sealing device according to claim 3, characterized in that: The flange portion (23) further comprises a transition portion (231), wherein the transition portion (231) is connected between the sealing portion (232) and the cap body (22), and an angle cavity (235) is formed between the transition portion (231) and the sealing portion (232), wherein an angle θ of the angle cavity (235) satisfies 0°<θ<90°; The mounting end surface (12) further comprises a supporting portion (122), and the supporting portion (122) extends into the angle cavity (235).

5. The sealing device according to claim 4, characterized in that: A second annular groove (234) is formed between the transition portion (231) and the outer wall surface of the cap body (22), and the extrusion portion (31) further comprises a second protrusion (312) embedded in the second annular groove (234).

6. The sealing device according to claim 4, characterized in that: Along the first direction: the distance between the bottom of the sealing portion (232) and the mounting end surface (12) is H1, and the distance between the connection position between the transition portion (231) and the cap body (22) and the mounting end surface (12) is H2, H1>H2; Along the first direction: the distance between the connection position of the sealing portion (232) and the transition portion (231) and the top end surface of the cap body (22) is H3, and the distance between the top end of a section of the sealing portion (232) away from the transition portion (231) and the top end surface of the cap body (22) is H4, and H4>H3.

7. The sealing device according to claim 4, characterized in that: The bottom wall thickness of the sealing portion (232) is greater than the wall thickness of the transition portion (231).

8. The sealing device according to claim 4, characterized in that: The top end of a section of the sealing portion (232) away from the transition portion (231) is located in the groove (121), and a distance H5 between the top end of the section of the sealing portion (232) away from the transition portion (231) and the mounting end surface (12) satisfies: H5>0.

9. An ink cartridge, characterized in that: It comprises a shell (40) and a sealing device as described in any one of claims 1 to 8, wherein a connecting member (10) of the sealing device is arranged in the shell (40) to form an ink storage chamber (41) in the shell (40).

10. The ink cartridge according to claim 9, characterized in that: The tubular column portion (11) of the sealing device and the pump cap (20) of the sealing device jointly form a detection chamber (13), and the connecting member (10) also has a connecting channel (132), and the connecting channel (132) is connected between the ink storage chamber (41) and the detection chamber (13).

11. The ink cartridge according to claim 10, characterized in that: The invention also comprises an elastic member (50), wherein the elastic member (50) is arranged between the pump cap (20) and the bottom wall of the detection chamber (13); the inner wall of the pump cap (20) is provided with a convex column (24); the bottom wall of the detection chamber (13) is provided with a fixing column (131); and the two ends of the elastic member (50) are respectively sleeved on the fixing column (131) and the convex column (24).

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