Ink box

Abstract

The ink box comprises an ink bottle, a nozzle and an elastic sealing piece, the ink bottle is provided with a bottle opening and a bottle shoulder, the bottle shoulder is provided with a first welding part, the lower end of the nozzle is provided with a sleeving part, the bottom of the sleeving part is provided with a second welding part, the sleeving part is arranged on the periphery of the bottle opening in a sleeving mode, and the elastic sealing piece is connected to the bottle opening and the nozzle in a sealed mode. Therefore, the unevenness of the bottle opening can be well compensated, the airtight requirement between the bottle opening and the nozzle is met, and the ink leakage phenomenon of the ink box is avoided. The fastening requirement between the nozzle and the ink bottle is realized by welding and fixing the first welding part and the second welding part, the smoothness of the bottle shoulder of the ink bottle is superior to that of the bottle opening, enough welding area and supporting strength are achieved, the first welding part and the second welding part only need to be welded and fixed, the airtight requirement is not needed, and the manufacturing cost is reduced. Therefore, the welding difficulty is greatly reduced, the overall processing difficulty of the ink box is reduced, the yield of the ink box is improved, and the production cost of the ink box is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of printing consumables, and particularly relates to an ink cartridge. Background Art

[0002] An existing ink cartridge is as Figure 1 shown, and includes structures such as an ink bottle, a nozzle and a nozzle top core. Among them, the nozzle is ultrasonically welded to the bottle mouth of the ink bottle to achieve fastening and airtightness. However, in order to match the use of a printer, the shape of the ink bottle is irregular, the bottle mouth is offset to the left, and the lower part of the bottle mouth is a suspended position and not stressed; secondly, the welding surface at the bottle mouth is a small plane; in addition, the ink bottle is a blow-molded structure, and the bottle mouth needs to be subjected to secondary shearing processing after molding, so that the flatness of the bottle mouth is very poor and there are uneven situations. These factors lead to very high requirements for ultrasonic welding between the nozzle and the bottle mouth, resulting in an increase in the processing difficulty and cost of the ink cartridge. And due to the large welding difficulty, the defective rate of ink cartridge production is relatively high, the sealing performance of the ink cartridge is poor, and ink leakage is likely to occur. Summary of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an ink cartridge, which can not only reduce the processing difficulty and cost of the ink cartridge, but also avoid the ink leakage phenomenon of the ink cartridge.

[0004] To solve the above problems, the technical solution adopted by the utility model is as follows: an ink cartridge, including an ink bottle, a nozzle and an elastic seal. The ink bottle has a bottle mouth and a bottle shoulder, the bottle mouth protrudes upward from the bottle shoulder, the bottle shoulder is provided with a first welding part, the lower end of the nozzle is provided with a socket part, the bottom of the socket part has a second welding part, the socket part is sleeved on the outer periphery of the bottle mouth, the elastic seal is sealingly connected between the bottle mouth and the nozzle, and the first welding part and the second welding part are welded and fixed.

[0005] Compared with the prior art, the beneficial effect of the utility model is that: an elastic seal is sealingly connected between the bottle mouth and the nozzle of this ink cartridge, and the elastic seal can well compensate for the unevenness at the bottle mouth, so as to meet the airtight requirement between the bottle mouth and the nozzle and avoid the ink leakage phenomenon of the ink cartridge. And the fastening requirement between the nozzle and the ink bottle is realized by welding and fixing the first welding part on the bottle shoulder of the ink bottle and the second welding part at the bottom of the nozzle. The flatness of the bottle shoulder of the ink bottle is better than that of the bottle mouth, and it has sufficient welding area and support strength. And the first welding part and the second welding part only need to be welded and fixed, without airtight requirement. Therefore, the welding difficulty is greatly reduced, and further the overall processing difficulty of the ink cartridge is reduced, the yield of the ink cartridge is improved, and the production cost of the ink cartridge is reduced.

[0006] The above-mentioned ink cartridge, wherein the elastic seal includes a main body portion, a first sealing portion and a second sealing portion. The first sealing portion and the second sealing portion are integrally formed at the upper end and the lower end of the main body portion respectively. A first socket hole is formed in the socket portion, and the first socket hole is sleeved on the outer circumferences of the main body portion and the bottle mouth. A second socket hole communicating with the first socket hole is formed in the upper portion of the nozzle, and the second socket hole is sleeved on the outer circumference of the first sealing portion. The lower end surface and the upper end surface of the main body portion are hermetically attached to the upper end surface of the bottle mouth and the top wall of the first socket hole respectively. The upper end surface of the first sealing portion is hermetically attached to the top wall of the second socket hole, and the outer circumferential surface of the second sealing portion is hermetically attached to the inner circumferential surface of the bottle mouth.

[0007] The above-mentioned ink cartridge further includes a nozzle top core, a spring and a spring support. The spring support is installed in the bottle mouth. The spring is installed in the spring support, and the upper and lower ends of the spring abut against the nozzle top core and the spring support respectively. The upper end of the nozzle top core is inserted into the elastic seal.

[0008] In the above-mentioned ink cartridge, a support step is provided in the bottle mouth. The spring support includes an installation portion and a lapping portion. The installation portion is inserted into the bottle mouth for installing the spring, and the lapping portion is lapped on the support step.

[0009] In the above-mentioned ink cartridge, the lapping portion is provided with a first snap structure, and the lower portion of the elastic seal is provided with a second snap structure. The second snap structure is snap-connected with the first snap structure.

[0010] In the above-mentioned ink cartridge, the first snap structure is a snap-through hole, and the second snap structure is a snap projection. The snap projection is elastically snap-connected with the snap-through hole.

[0011] In the above-mentioned ink cartridge, the bottom of the snap projection has an elastic tapered snap portion with a larger upper diameter and a smaller lower diameter. The outer diameter of the upper end of the elastic tapered snap portion is larger than the inner diameter of the snap-through hole when no external force is applied.

[0012] The above-mentioned ink cartridge further includes a nozzle cover. The nozzle cover is integrally formed at the top of the nozzle.

[0013] In the above-mentioned ink cartridge, a recovery cotton is installed on the side of the nozzle cover.

[0014] The above-mentioned ink cartridge further includes a bottle cap. The bottle cap is sleeved on the outer circumference of the nozzle and is snap-connected to the lower end of the bottle shoulder of the ink bottle.

[0015] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0016] Figure 1 is a cross-sectional view of an existing ink cartridge;

[0017] Figure 2 is a schematic diagram of the overall structure of the ink cartridge according to an embodiment of the present invention;

[0018] Figure 3 is an exploded view of the ink cartridge according to an embodiment of the present invention;

[0019] Figure 4 is a cross-sectional view of the ink cartridge according to an embodiment of the present invention;

[0020] Figure 5 is a schematic diagram of the structure of the ink cartridge according to an embodiment of the present invention after removing the bottle cap;

[0021] Figure 6 is a schematic diagram of the structure of the ink bottle according to an embodiment of the present invention;

[0022] Figure 7 is a schematic diagram of the structure of the elastic seal according to an embodiment of the present invention;

[0023] Figure 8 is a cross-sectional view of the nozzle according to an embodiment of the present invention;

[0024] Figure 9 is a schematic diagram of the structure of the spring support according to an embodiment of the present invention.

[0025] Explanation of the reference numerals in the drawings: 100 ink bottle, 110 bottle mouth, 111 support step, 120 bottle shoulder, 121 first welding part, 200 nozzle, 210 socket part, 211 second welding part, 212 first socket hole, 2121 annular sealing protrusion, 220 second socket hole, 300 elastic seal, 310 main body part, 320 first sealing part, 330 second sealing part, 340 second buckle structure, 341 elastic conical clamping part, 400 nozzle top core, 500 spring, 600 spring support, 610 installation part, 620 overlapping part, 621 first buckle structure, 700 nozzle cover, 800 recovery cotton, 900 bottle cap. Detailed Description of the Embodiment

[0026] The following will describe in detail the embodiments of the present invention, with reference to Figures 2 to 9, an embodiment of the present utility model provides an ink cartridge, which includes an ink bottle 100, a nozzle 200, and an elastic seal 300. The ink bottle 100 has a bottle mouth 110 and a bottle shoulder 120. The bottle mouth 110 protrudes upward from the bottle shoulder 120. The bottle shoulder 120 is provided with a first welding portion 121. The lower end of the nozzle 200 is provided with a socket portion 210. The bottom of the socket portion 210 has a second welding portion 211. The socket portion 210 is sleeved on the outer periphery of the bottle mouth 110, and the first welding portion 121 and the second welding portion 211 are welded and fixed. The elastic seal 300 is sealingly connected between the bottle mouth 110 and the nozzle 200.

[0027] An elastic seal 300 is sealingly connected between the bottle mouth 110 and the nozzle 200 of this ink cartridge. When the elastic seal 300 is under pressure, it can deform, so as to well compensate for the unevenness at the bottle mouth 110, and then meet the airtight requirement between the bottle mouth 110 and the nozzle 200, avoiding the ink leakage phenomenon of the ink cartridge. The fastening requirement between the nozzle 200 and the ink bottle 100 is realized by welding and fixing the first welding portion 121 on the bottle shoulder 120 of the ink bottle 100 and the second welding portion 211 at the bottom of the nozzle 200. The flatness of the bottle shoulder 120 of the ink bottle 100 is better than that at the bottle mouth 110, and it has sufficient welding area and support strength. Moreover, the first welding portion 121 and the second welding portion 211 only need to be welded and fixed, without airtight requirement. Therefore, the welding difficulty is greatly reduced, and then the overall processing difficulty of the ink cartridge is reduced, the yield of the ink cartridge is improved, and the production cost of the ink cartridge is reduced. Therefore, this ink cartridge can better ensure the quality of the ink cartridge while reducing the processing difficulty. Further, referring to Figure 3 and Figure 8 , the second welding portion 211 is an annular protrusion that is larger at the top and smaller at the bottom to further reduce the welding difficulty and improve the welding success rate.

[0028] Further, referring to Figure 7 , the elastic seal 300 is an elastic rubber plug. The elastic seal 300 includes a main body portion 310, a first sealing portion 320, and a second sealing portion 330. The first sealing portion 320 and the second sealing portion 330 are integrally formed at the upper end and the lower end of the main body portion 310 respectively. Referring to Figure 8 , a first socket hole 212 is opened in the socket portion 210, and a second socket hole 220 communicating with the first socket hole 212 is opened in the upper part of the nozzle 200. The aperture of the second socket hole 220 is smaller than that of the first socket hole 212, so that a part of the stepped surface is reserved on the top wall of the first socket hole 212. A through hole communicating with the second socket hole 220 is also opened in the upper part of the nozzle 200 for facilitating ink filling. Referring to Figure 4, during installation and fitting, the second sealing part 330 is hermetically inserted into the bottle mouth 110. The outer diameter of the second sealing part 330 in the natural state is slightly larger than the inner diameter of the bottle mouth 110. When the second sealing part 330 is inserted towards the bottle mouth 110, the second sealing part 330 is compressed and shrunk, and can be inserted into the bottle mouth 110. Under the action of the deformation recovery force, the outer peripheral surface of the second sealing part 330 is hermetically fitted to the inner peripheral surface of the bottle mouth 110.

[0029] The first socket hole 212 is socketed on the outer peripheries of the main body part 310 and the bottle mouth 110, the second socket hole 220 is socketed on the outer periphery of the first sealing part 320, the nozzle 200 applies a downward pressure to the elastic sealing member 300, the elastic sealing member 300 is deformed under pressure, the lower end surface and the upper end surface of the main body part 310 are respectively hermetically fitted to the upper end surface of the bottle mouth 110 and the top wall of the first socket hole 212, and the upper end surface of the first sealing part 320 is hermetically fitted to the top wall of the second socket hole 220. Through at least three places of hermetic fitting, the ink cartridge can well ensure the airtight requirement between the nozzle 200 and the ink bottle 100, and prevent ink leakage. Further, referring to Figure 8 , the top wall of the first socket hole 212 is provided with an annular sealing protrusion 2121. When the annular sealing protrusion 2121 and the upper end surface of the main body part 310 are mutually extruded, both of them can be deformed, so as to ensure close contact and sealing. Further, while ensuring the hermetic fitting of the upper and lower end surfaces of the main body part 310 with the top wall of the first socket hole 212 and the upper end surface of the bottle mouth 110, and the hermetic fitting of the upper end surface of the first sealing part 320 with the top wall of the second socket hole 220, the elastic sealing member 300 will expand outwards after being pressed, so that the outer peripheral surface of the main body part 310 is hermetically fitted to the inner peripheral surface of the first socket hole 212, and the outer peripheral surface of the first sealing part 320 is hermetically fitted to the inner peripheral surface of the second socket hole 220, thereby further improving the airtightness between the nozzle 200 and the ink bottle 100.

[0030] Further, referring to Figure 3 and Figure 4 , the ink cartridge further includes a nozzle top core 400, a spring 500 and a spring support 600. The spring support 600 is installed in the bottle mouth 110, the spring 500 is installed in the spring support 600, and the upper and lower ends of the spring 500 respectively abut against the nozzle top core 400 and the spring support 600. The upper end of the nozzle top core 400 is inserted into the elastic sealing member 300. Further, referring to Figure 4 and Figure 6 , a support step 111 is provided in the bottle mouth 110. The spring support 600 includes an installation part 610 and a lapping part 620. The installation part 610 is inserted into the bottle mouth 110 for installing the spring 500, and the lapping part 620 is lapped on the support step 111 to prevent it from falling into the ink bottle 100.

[0031] Further, referring to Figure 4 , Figure 7 and Figure 9 , the overlapping portion 620 is provided with a first snap structure 621, and the lower part of the elastic seal 300 is provided with a second snap structure 340, and the second snap structure 340 is snap-connected with the first snap structure 621. In this ink cartridge, the spring support 600 is designed as an independent spring support 600, rather than integrally formed with the nozzle 200, which can prevent the spring support 600 from being shattered during the welding of the first welding portion 121 and the second welding portion 211. Since the spring support 600 and the nozzle 200 are designed as a split type, when the nozzle top core 400 is pushed upward by the spring 500, the thrust of the spring 500 will be transmitted to the elastic seal 300. By providing the first snap structure 621 and the second snap structure 340, it can be ensured that the nozzle top core 400 will not push the elastic seal 300 upward, thereby ensuring the sealing effect of the elastic seal 300. Therefore, this ink cartridge can not only prevent the spring support 600 from being ultrasonically shattered and avoid damage to the internal structure of the ink cartridge, but also meet the airtightness requirements of the ink cartridge. Further, the first snap structure 621 is a snap-through hole, and the second snap structure 340 is a snap projection, and the snap projection is elastically snap-connected with the snap-through hole to realize the relative fixation between the elastic seal 300 and the spring support 600. Further still, the bottom of the snap projection has an elastic tapered snap portion 341 with a larger upper diameter and a smaller lower diameter. The outer diameter of the upper end of the elastic tapered snap portion 341 when not under external force is larger than the inner diameter of the snap-through hole. When the elastic tapered snap portion 341 is inserted toward the snap-through hole, the elastic tapered snap portion 341 is squeezed by the snap-through hole, will shrink and pass through the snap-through hole, and after passing through the snap-through hole, the elastic tapered snap portion 341 returns to its original state. When being pushed upward by the nozzle top core 400, the elastic tapered snap portion 341 can be stuck on the lower end surface of the overlapping portion 620 and will not pass through the snap-through hole, thereby ensuring the relative fixation between the elastic seal 300 and the spring support 600 and preventing the elastic seal 300 from being pushed upward and affecting the airtightness.

[0032] Further, referring to Figure 3 and Figure 5, the ink cartridge further includes a nozzle cover 700 integrally formed on the top of the nozzle 200. In the prior art, the nozzle cover and the nozzle are of a split structure and are connected by a snap-fastening method. However, due to the structural limitation of the ink suction nozzle of the print head, the small nozzle cover can only be designed with a multi-perforated structure and a very thin wall thickness. Under the long-term pushing action of the spring, the nozzle cover is very likely to crack and come off from the root of the perforation, resulting in ink leakage from the nozzle of the ink cartridge. In this ink cartridge, the nozzle cover 700 is integrally formed on the top of the nozzle 200, which can well avoid the ink leakage problem caused by the fracture of the nozzle cover 700. Further, a recovery cotton 800 is installed on the side of the nozzle cover 700 to absorb the overflowed ink and prevent the ink from leaking out of the bottle. Further, referring to Figure 4 , the ink cartridge further includes a bottle cap 900 sleeved on the outer periphery of the nozzle 200 and snap-fastened to the lower end of the bottle shoulder 120 of the ink bottle 100.

[0033] It should be noted that in the description of the present invention, if there is any reference to the orientation description, such as the orientation or positional relationship indicated by up, down, front, rear, left, right, etc., it is all based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation to the present invention.

[0034] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of the first or the second, etc., it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0036] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the present invention belong to the scope of protection required by the present invention.

Claims

1. An ink cartridge, characterized in that: The invention comprises an ink bottle (100), a nozzle (200) and an elastic sealing member (300), wherein the ink bottle (100) comprises a bottle mouth (110) and a bottle shoulder (120), wherein the bottle mouth (110) protrudes upward from the bottle shoulder (120), and the bottle shoulder (120) is provided with a first welding portion (121), and the lower end of the nozzle (200) is provided with a sleeve portion (210), and the bottom of the sleeve portion (210) is provided with a second welding portion (211), and the sleeve portion (210) is sleeved on the outer periphery of the bottle mouth (110), and the elastic sealing member (300) is sealingly connected to the bottle mouth (110) and the nozzle (200), and the first welding portion (121) and the second welding portion (211) are fixed by welding.

2. The ink cartridge according to claim 1, characterized in that: The elastic sealing member (300) comprises a main body (310), a first sealing portion (320) and a second sealing portion (330), wherein the first sealing portion (320) and the second sealing portion (330) are respectively integrally formed at the upper end and the lower end of the main body (310); A first sleeve connection hole (212) is formed in the sleeve connection portion (210), and the first sleeve connection hole (212) is sleeved on the outer periphery of the main body portion (310) and the bottle mouth (110); a second sleeve connection hole (220) is formed on the upper portion of the nozzle (200) and is communicated with the first sleeve connection hole (212), and the second sleeve connection hole (220) is sleeved on the outer periphery of the first sealing portion (320); The lower end surface and the upper end surface of the main body portion (310) are respectively sealed and fitted to the upper end surface of the bottle mouth (110) and the top wall of the first sleeve hole (212); the upper end surface of the first sealing portion (320) is sealed and fitted to the top wall of the second sleeve hole (220); and the outer peripheral surface of the second sealing portion (330) is sealed and fitted to the inner peripheral surface of the bottle mouth (110).

3. The ink cartridge according to claim 1, characterized in that: The nozzle top core (400), a spring (500) and a spring support (600) are also included. The spring support (600) is installed in the bottle mouth (110). The spring (500) is installed in the spring support (600). The upper and lower ends of the spring (500) respectively abut against the nozzle top core (400) and the spring support (600). The upper end of the nozzle top core (400) is inserted into the elastic sealing component (300).

4. The ink cartridge according to claim 3, characterized in that: A supporting step (111) is provided in the bottle mouth (110); the spring support (600) comprises a mounting portion (610) and an overlapping portion (620); the mounting portion (610) is inserted into the bottle mouth (110) and is used to mount the spring (500); and the overlapping portion (620) overlaps the supporting step (111).

5. The ink cartridge according to claim 4, characterized in that: The overlapping portion (620) is provided with a first snap-fit ​​structure (621), and the lower portion of the elastic sealing component (300) is provided with a second snap-fit ​​structure (340), and the second snap-fit ​​structure (340) and the first snap-fit ​​structure (621) are snap-fitted to each other.

6. The ink cartridge according to claim 5, characterized in that: The first snap-fit ​​structure (621) is a snap-fit ​​through hole, and the second snap-fit ​​structure (340) is a snap-fit ​​protrusion, and the snap-fit ​​protrusion is elastically snap-fitted with the snap-fit ​​through hole.

7. The ink cartridge according to claim 6, characterized in that: The bottom of the clamping protrusion has an elastic conical clamping portion (341) which is larger at the top and smaller at the bottom. When the elastic conical clamping portion (341) is not subjected to external force, the outer diameter of the upper end is larger than the inner diameter of the clamping through hole.

8. The ink cartridge according to claim 1, characterized in that: It also includes a nozzle buckle cover (700), wherein the nozzle buckle cover (700) is integrally formed on the top of the nozzle (200).

9. The ink cartridge according to claim 8, characterized in that: The side of the nozzle buckle cover (700) is installed with recycled cotton (800).

10. The ink cartridge according to claim 1, characterized in that: It also includes a bottle cap (900), which is sleeved on the outer periphery of the nozzle (200) and snap-connected to the lower end of the bottle shoulder (120) of the ink bottle (100).

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