Ink cartridge for ink jet printer

Abstract

The utility model relates to an ink box for an ink-jet printer, which comprises an ink box body, a lower shell and a nozzle, an ink guide port is arranged at the bottom of the ink box body, the lower shell is locked at the bottom of the ink box body through a screw and is provided with an ink groove communicated with the ink guide port, and an ink outlet is arranged at the edge of the ink groove. And the nozzle is arranged at the bottom of the lower shell and corresponds to the ink outlet. According to the utility model, the sealing gasket is arranged between the ink box body and the lower shell, and the sealing gasket partially extends into the lower shell to separate the hard connecting structure between the ink box body and the lower shell, so that all the contact between the ink box body and the lower shell is elastic contact, and the buffering effect on impact force at the position is effectively improved; in the process of loading and unloading the ink box, even if impact is applied when the ink box crosses over the pawl part of the locking part, the impact is difficult to transmit to the periphery of the nozzle of the printing head, so that the vibration at the nozzle is reduced, the generation of bubbles is inhibited, and the printing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printers, in particular to an ink cartridge used for an inkjet printer. Background Art

[0002] The ink cartridge is an important component of an inkjet printer. Since the ink capacity and service life of the ink in the ink cartridge are limited, the ink in the ink cartridge needs to be replaced or added. The ink cartridge is usually detachably mounted on the carriage unit of the inkjet printer body, and is locked by a spring and a locking component.

[0003] For example, the Chinese patent application "A Carriage Device" (application number: CN201911311857.4) with publication number CN110816084A discloses such a structure, in which when the ink cartridge is removed, the ink cartridge will be impacted when it passes over the pawl part of the locking component, and the impact is also easily transmitted to the peripheral part of the print head. Since each ink nozzle is full of ink, bubbles are easily generated with the impact, which causes each nozzle to exhibit poor ejection when ejecting ink in the initial state of printing, and even produces a problem of empty printing, resulting in poor printing effect.

[0004] Therefore, further improvements need to be made to the ink cartridge structure currently used in inkjet printers. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an ink cartridge for an inkjet printer which can effectively reduce the vibration of a print head, thereby avoiding the generation of bubbles and improving the printing effect, in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is:

[0007] An ink cartridge for an inkjet printer comprises an ink cartridge body, a lower shell and a nozzle, wherein the lower shell is fixedly connected to the bottom of the ink cartridge body via a connecting piece, a sealing gasket is clamped between the ink cartridge body and the lower shell, and the sealing gasket at least partially wraps the connecting piece at the connecting piece so that the ink cartridge body and the lower shell always maintain elastic contact.

[0008] Preferably, an ink inlet is provided at the bottom of the ink cartridge body, the lower shell has an ink groove connected to the ink inlet, an ink outlet is provided at the edge of the ink groove, the nozzle is arranged at the bottom of the lower shell and corresponds to the ink outlet, and the connecting piece is a screw.

[0009] Preferably, the bottom wall of the ink cartridge body is provided with a threaded column, the lower shell is provided with a threaded hole corresponding to the threaded column, the sealing gasket is provided with a sealing sleeve wrapped around the outer periphery of the threaded column and the lower end of which is embedded in the lower shell, and the screw passes through the threaded hole, the sealing sleeve, and the threaded column from bottom to top to lock the lower shell to the bottom of the ink cartridge body. The provision of the sealing sleeve is conducive to improving the buffering effect of the screw connection on the impact force.

[0010] Preferably, the lower end of the sealing sleeve is provided with a pressing part which can be embedded in the lower shell, and a step is formed between the pressing part and the upper part of the sealing sleeve to abut against the lower end of the threaded column. This structure isolates the hard contact between the threaded column and the lower shell to reduce the transmission of vibration.

[0011] Preferably, the threaded hole includes a first section, a second section, and a third section connected in sequence from bottom to top, and the inner diameters of the second section, the third section, and the first section decrease in sequence, the upper portion of the clamping portion passes through the third section, and the lower portion of the clamping portion forms a clamping edge that can be embedded in the second section. This structure improves the assembly tightness between the sealing gasket and the lower shell on the one hand, and further improves the shockproof effect on the other hand.

[0012] Preferably, the bottom of the ink cartridge body is partially sunken to form an ink outlet area, the lower shell includes a bottom plate and a side plate extending vertically at the edge of the bottom plate, at least part of the side plate surrounds the periphery of the ink outlet area, and the sealing gasket is arranged in the accommodating groove surrounded by the bottom plate and each side plate. This structure is conducive to improving the reliability of the assembly between the nozzle and the ink cartridge.

[0013] Preferably, the lower surface of the ink outlet area is provided with a first convex rib arranged near the edge of the ink guide port, the first convex rib constrains a first sealing groove surrounding the outer periphery of the ink guide port, and accordingly, the upper surface of the sealing gasket is provided with a first sealing rib embedded in the first sealing groove. Preferably, the upper surface of the bottom plate is provided with a second convex rib arranged corresponding to the edge of the ink guide port, the second convex rib constrains a second sealing groove arranged corresponding to the first sealing groove, and accordingly, the lower surface of the sealing gasket is provided with a second sealing rib embedded in the second sealing groove. The above structure is conducive to improving the sealing performance and preventing ink leakage.

[0014] Preferably, there are at least two ink grooves arranged at intervals, and each ink groove forms an ink outlet that gradually slopes downward at the adjacent end.

[0015] In order to facilitate the assembly of the ink cartridge body, the lower shell and the sealing gasket, a downwardly extending positioning column is provided at the bottom of the ink outlet area. Correspondingly, a positioning hole is provided on the sealing gasket, and a positioning groove is provided on the bottom plate to cooperate with the lower end of the positioning column.

[0016] Compared with the prior art, the advantages of the utility model are: the utility model provides a sealing gasket between the ink cartridge body and the lower shell, and the sealing gasket partially penetrates into the lower shell to separate the rigid connection structure between the ink cartridge body and the lower shell, so that all contacts between the ink cartridge body and the lower shell are elastic contacts, which effectively improves the buffering effect of the impact force here. In the process of loading and unloading the ink cartridge, even if an impact is applied when crossing the pawl part of the locking component, the impact is difficult to be transmitted to the periphery of the nozzle of the print head, thereby reducing the vibration at the nozzle, suppressing the generation of bubbles, and improving the printing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the ink cartridge according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 Exploded diagram of

[0019] Figure 3 for Figure 2 Another angle view;

[0020] Figure 4 It is a cross-sectional view of an ink cartridge according to an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] like Figures 1 to 4 As shown, the ink cartridge for the inkjet printer of this embodiment includes an ink cartridge body 1, a lower shell 2 and a nozzle 3. An ink guide port 11 is opened at the bottom of the ink cartridge body 1. The lower shell 2 is fixed to the bottom of the ink cartridge body 1 by a connecting member and has an ink groove 21 connected to the ink guide port 11. The connecting member in this embodiment is a screw 4. An ink outlet 211 is opened at the edge of the ink groove 21. The nozzle 3 is arranged at the bottom of the lower shell 2 and corresponds to the ink outlet 211. A sealing gasket 5 is clamped between the ink cartridge body 1 and the lower shell 2, and the sealing gasket 5 wraps at least a part of the screw 4 at the corresponding screw 4 so that the ink cartridge body 1 and the lower shell 2 always maintain elastic contact.

[0023] Specifically, the bottom wall of the ink cartridge body 1 is provided with a threaded column 12, the lower shell 2 is provided with a threaded hole 22 corresponding to the threaded column 12, the sealing gasket 5 is provided with a sealing sleeve 51 wrapped around the outer periphery of the threaded column 12 and the lower end of which is embedded in the lower shell 2, and the screw 4 passes through the threaded hole 22, the sealing sleeve 51, and the threaded column 12 from bottom to top to lock the lower shell 2 to the bottom of the ink cartridge body 1. By providing the above-mentioned sealing sleeve, it is beneficial to improve the buffering effect of the screw connection on the impact force.

[0024] The lower end of the sealing sleeve 51 is provided with a pressing portion 510 which can be embedded in the lower housing 2, and a step 512 is formed between the pressing portion 510 and the upper portion of the sealing sleeve 51 to abut against the lower end of the threaded column 12. This structure isolates the hard contact between the threaded column 12 and the lower housing 2 to reduce the transmission of vibration.

[0025] The threaded hole 22 includes a first section 221, a second section 222, and a third section 223 which are connected in sequence from bottom to top, and the inner diameters of the second section 222, the third section 223, and the first section 221 decrease in sequence, the upper portion of the clamping portion 510 passes through the third section 223, and the lower portion of the clamping portion 510 forms a clamping edge 511 which can be embedded in the second section 222. This structure improves the assembly tightness between the sealing gasket 5 and the lower housing 2 on the one hand, and further improves the shockproof effect on the other hand.

[0026] The bottom of the ink cartridge body 1 is partially sunken to form an ink outlet area 13. The lower shell 2 includes a bottom plate 23 and a side plate 24 extending vertically at the edge of the bottom plate 23. At least part of the side plate 24 surrounds the periphery of the ink outlet area 13. The sealing gasket 5 is arranged in the receiving groove 20 surrounded by the bottom plate 23 and the side plates 24. This structure is conducive to improving the reliability of the assembly between the nozzle and the ink cartridge.

[0027] The lower surface of the ink outlet area 13 is provided with a first convex rib 14 arranged near the edge of the ink guide port 11, and the first convex rib 14 constrains a first sealing groove 15 surrounding the outer periphery of the ink guide port 11. Accordingly, the upper surface of the sealing gasket 5 is provided with a first sealing rib 52 embedded in the first sealing groove 15. The upper surface of the bottom plate 23 is provided with a second convex rib 231 arranged corresponding to the edge of the ink guide port 11, and the second convex rib 231 constrains a second sealing groove 232 arranged corresponding to the first sealing groove 15. Accordingly, the lower surface of the sealing gasket 5 is provided with a second sealing rib 53 embedded in the second sealing groove 232. The above structure is conducive to improving the sealing performance and preventing ink leakage.

[0028] In this embodiment, there are four ink grooves 21 arranged adjacent to each other at intervals, and each ink groove 21 forms an ink outlet 211 which is gradually inclined downward and penetrates at the adjacent end.

[0029] In order to facilitate the assembly of the ink cartridge body 1, the lower shell 2 and the sealing gasket 5, a downwardly extending positioning column 131 is provided at the bottom of the ink outlet area 13. Correspondingly, a positioning hole 54 is provided on the sealing gasket 5, and a positioning groove 233 that cooperates with the lower end of the positioning column 131 is provided on the bottom plate 23.

[0030] In the present embodiment, a sealing gasket 5 is provided between the ink cartridge body 1 and the lower shell 2, and the sealing gasket 5 partially penetrates into the lower shell 2 to separate the rigid connection structure between the ink cartridge body 1 and the lower shell 2, so that all contacts between the ink cartridge body 1 and the lower shell 2 are elastic contacts, which effectively improves the buffering effect of the impact force here. In the process of loading and unloading the ink cartridge, even if an impact is applied when passing over the pawl portion of the locking component, the impact is difficult to be transmitted to the periphery of the nozzle of the print head, thereby reducing the vibration at the nozzle, suppressing the generation of bubbles, and improving the printing effect.

[0031] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. An ink cartridge for an inkjet printer, comprising an ink cartridge body (1), a lower shell (2) and a nozzle (3), wherein the lower shell (2) is fixedly connected to the bottom of the ink cartridge body (1) through a connecting member, and characterized in that: A sealing gasket (5) is sandwiched between the ink cartridge body (1) and the lower shell (2), and the sealing gasket (5) at least partially wraps the connecting member at the connecting member so that the ink cartridge body (1) and the lower shell (2) always maintain elastic contact.

2. The ink cartridge for an inkjet printer according to claim 1, characterized in that: The bottom of the ink cartridge body (1) is provided with an ink inlet (11), the lower shell (2) has an ink groove (21) connected to the ink inlet (11), the edge of the ink groove (21) is provided with an ink outlet (211), the nozzle (3) is arranged at the bottom of the lower shell (2) and corresponds to the ink outlet (211), and the connecting member is a screw (4).

3. The ink cartridge for an inkjet printer according to claim 2, characterized in that: The bottom wall of the ink cartridge body (1) is provided with a threaded column (12), the lower shell (2) is provided with a threaded hole (22) corresponding to the threaded column (12), the sealing gasket (5) is provided with a sealing sleeve (51) wrapped around the outer periphery of the threaded column (12) and the lower end of which is embedded in the lower shell (2), and the screw (4) passes through the threaded hole (22), the sealing sleeve (51) and the threaded column (12) from bottom to top to lock the lower shell (2) to the bottom of the ink cartridge body (1).

4. The ink cartridge for an inkjet printer according to claim 3, characterized in that: The lower end of the sealing sleeve (51) is provided with a pressing portion (510) that can be embedded in the lower shell (2), and a step (512) that abuts against the lower end of the threaded column (12) is formed between the pressing portion (510) and the upper portion of the sealing sleeve (51).

5. The ink cartridge for an inkjet printer according to claim 4, characterized in that: The threaded hole (22) includes a first section (221), a second section (222), and a third section (223) which are connected in sequence from bottom to top, and the inner diameters of the second section (222), the third section (223), and the first section (221) decrease in sequence, the upper part of the clamping portion (510) is arranged through the third section (223), and the lower part of the clamping portion (510) forms a clamping edge (511) that can be embedded in the second section (222).

6. The ink cartridge for an inkjet printer according to any one of claims 2 to 5, characterized in that: The bottom of the ink cartridge body (1) is partially sunken to form an ink outlet area (13), and the lower shell (2) includes a bottom plate (23) and a side plate (24) extending vertically at the edge of the bottom plate (23), and at least a portion of the side plate (24) surrounds the periphery of the ink outlet area (13), and the sealing gasket (5) is arranged in a receiving groove (20) enclosed by the bottom plate (23) and each of the side plates (24).

7. The ink cartridge for an inkjet printer according to claim 6, characterized in that: The lower surface of the ink outlet area (13) is provided with a first convex rib (14) arranged close to the edge of the ink guide port (11), and the first convex rib (14) constrains a first sealing groove (15) surrounding the periphery of the ink guide port (11). Correspondingly, the upper surface of the sealing gasket (5) is provided with a first sealing rib (52) embedded in the first sealing groove (15).

8. The ink cartridge for an inkjet printer according to claim 7, characterized in that: The upper surface of the bottom plate (23) is provided with a second convex rib (231) arranged corresponding to the edge of the ink guide port (11), and the second convex rib (231) constrains a second sealing groove (232) arranged corresponding to the first sealing groove (15). Correspondingly, the lower surface of the sealing gasket (5) is provided with a second sealing rib (53) embedded in the second sealing groove (232).

9. The ink cartridge for an inkjet printer according to claim 8, characterized in that: There are at least two ink grooves (21) arranged at intervals, and each ink groove (21) forms an ink outlet (211) at an adjacent end thereof, which gradually inclines downward and penetrates through.

10. The ink cartridge for an inkjet printer according to claim 6, characterized in that: A positioning column (131) extending downward is provided at the bottom of the ink outlet area (13); correspondingly, a positioning hole (54) is provided on the sealing gasket (5); and a positioning groove (233) is provided on the bottom plate (23) to be plugged into and matched with the lower end of the positioning column (131).

Images