An ink cartridge with a new locking member

Abstract

The present invention discloses an ink cartridge with a novel locking member, which is detachably installed in an ink cartridge installation part of a printer. The ink cartridge installation part is provided with a plurality of installation grooves, a positioning part is provided above the installation grooves, and a connecting part is provided below the installation grooves; the ink cartridge includes: an ink cartridge body, an ink outlet and an elastic locking member provided on the ink cartridge body. The elastic locking member is provided with a locking part, an unlocking part and a first elastic member. The locking part includes a first guiding surface and a locking surface, and the unlocking part includes a second guiding surface and a third guiding surface; when the ink cartridge is installed in the ink cartridge installation part, when the first guiding surface abuts against the positioning part and guides the positioning part, the first elastic member is in a compressed state until the locking surface is clamped with the positioning part, and the first elastic member is in a natural state; when the ink cartridge is disassembled, the positioning part generates a downward acting force on the elastic locking member under the action of an external thrust, so that the elastic locking member is compressed and gives way to the positioning part, so that the locking part is disengaged from the positioning part.

Description

Technical Field

[0001] The present invention belongs to the technical field of printing devices, and particularly relates to an ink cartridge with a novel locking member. Background Art

[0002] In the current technical field of printing devices, especially in the design and use of ink cartridges, users often face some inconveniences and technical challenges. In the prior art, for example, an ink cartridge disclosed in Patent No. CN109715407A requires the user to press down on the unlocking component to rotate the ink cartridge around the ink outlet and pop it out backward when unlocking the ink cartridge from the printer. Although this design realizes the basic installation and disassembly functions, it exposes multiple problems in the actual use process, which directly affect the user experience, as well as the stability and safety of the device. First of all, this unlocking method places relatively high requirements on the operational convenience of the user. The user needs to accurately apply sufficient pressure to trigger the unlocking mechanism, which not only increases the operation difficulty but may also result in the situation where the unlocking cannot be successfully achieved due to insufficient force. On the contrary, if the force is too large, the ink cartridge may quickly pop out backward. In this case, if the user fails to catch the ink cartridge in time, it may cause the ink cartridge to drop and be damaged. In addition, the sudden ejection of the ink cartridge also poses certain safety hazards, especially in an office environment, which may cause accidental injuries to surrounding personnel or objects.

[0003] Secondly, during the process of the user pressing down on the unlocking component to rotate the ink cartridge around the ink outlet, the problem of ink leakage is likely to occur. This is because a spring valve is provided inside the ink outlet to close the ink outlet when the ink cartridge is removed; when the ink cartridge rotates around the ink outlet, the ink outlet may not be completely closed by the spring valve, which provides an opportunity for ink leakage. Once leakage occurs, it will not only contaminate the ink cartridge itself and its ink outlet but also pollute the interior of the printer, affecting the printing quality and even damaging the functions of the printer. Therefore, how to ensure the leak-proof reliability of the ink cartridge during the unlocking and disassembly processes has become one of the technical problems to be urgently solved. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an ink cartridge with a novel locking member, which simplifies the user's operation steps by optimizing the unlocking mechanism, improves the operational convenience and safety of the user during the disassembly process of the ink cartridge, and enhances the leak-proof reliability of the ink cartridge, thus solving the problems existing in the prior art.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows: An ink cartridge with a novel locking member is detachably installed in the ink cartridge installation part of a printer. The ink cartridge installation part is provided with a plurality of installation slots, a positioning part is provided above the installation slots, and a connecting part is provided below the installation slots; The ink cartridge is characterized by including:

[0006] An ink cartridge body, an ink outlet and an elastic locking member provided on the ink cartridge body. The elastic locking member is provided with a locking portion, an unlocking portion, and a first elastic member. The locking portion includes a first guiding surface and a locking surface. The unlocking portion includes a second guiding surface and a third guiding surface.

[0007] When the ink cartridge is installed on the ink cartridge installation portion, when the first guiding surface abuts against the positioning portion and guides the positioning portion, the first elastic member is in a compressed state until the locking surface engages with the positioning portion, and the first elastic member is in a natural state.

[0008] When the ink cartridge is disassembled, the positioning portion contacts the second guiding surface and the third guiding surface in sequence under the action of an external thrust and finally stays on one side of the third guiding surface. The positioning portion generates a downward acting force on the elastic locking member, so that the elastic locking member is compressed and yields to the positioning portion, causing the locking portion to disengage from the positioning portion.

[0009] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing an elastic locking member on the ink cartridge body, the elastic locking member includes a locking portion and an unlocking portion; when the ink cartridge is installed, the positioning portion of the ink cartridge installation portion in the printer abuts against the locking portion, and the ink cartridge is locked with the printer; when the ink cartridge is disassembled, the unlocking portion elastically displaces along the direction of the locking portion and abuts against the positioning portion, separating the locking portion from the positioning portion, and thus separating the ink cartridge from the printer. Compared with the prior art, during the disassembly process of the ink cartridge of the present application, the user only needs to gently push the ink cartridge in the direction of the ink cartridge installation to unlock and make the ink cartridge slowly pop out in parallel, improving the convenience and safety of the user's operation of using the ink cartridge. At the same time, during the disassembly process, the ink cartridge does not need to rotate around the ink outlet, avoiding the situation of ink leakage when the ink outlet is not closed.

[0010] For the above-mentioned ink cartridge, a spring valve is provided in the ink outlet. When the ink cartridge is installed, the connecting portion applies a force to the spring valve to connect the ink outlet with the connecting portion; when the ink cartridge is disassembled, under the action of an external thrust, the connecting portion disengages from the spring valve; when the action of the external thrust stops, the spring valve changes back from the compressed state to the natural state, causing the ink cartridge to move in the opposite direction of the installation direction.

[0011] For the above-mentioned ink cartridge, the ink outlet is located at the bottom of the ink cartridge body, and the elastic locking member is located at the top of the ink cartridge body on the side far from the ink outlet.

[0012] For the above-mentioned ink cartridge, the ink cartridge body includes a receiving cavity for containing ink, and the ink outlet is communicated with the receiving cavity.

[0013] For the above-mentioned ink cartridge, the elastic locking member further includes a locking member body, a second elastic member, and a protrusion. The locking portion, the unlocking portion, and the second elastic member are all located on the upper end surface of the locking member body. One end of the first elastic member is fixed to the lower end surface of the locking member body, and the other end is connected to the ink cartridge body. The second elastic member is disposed between the locking portion and the unlocking portion, and the unlocking portion is in a "C" shape.

[0014] For the above-mentioned ink cartridge, the first guiding surface slopes upward from left to right, the locking surface is located on one side of the inclination angle of the first guiding surface, and the locking surface is an arc surface. The second guiding surface slopes upward from left to right, and the third guiding surface slopes downward from left to right.

[0015] For the above-mentioned ink cartridge, when the ink cartridge is disassembled and the thrust is stopped, the spring valve returns from the compressed state to the natural state. Affected by the elastic potential energy of the spring valve, the ink cartridge moves in the opposite direction of the installation direction. During this process, the positioning portion jumps over the second guiding surface and the locking surface and directly moves from one side of the third guiding surface to one side of the first guiding surface.

[0016] For the above-mentioned ink cartridge, when disassembling the ink cartridge and the external thrust stops acting, the second elastic member returns from the compressed state to the natural state to reset the unlocking portion to the initial position.

[0017] For the above-mentioned ink cartridge, a moving space is formed between the locking member body and the locking portion, and the unlocking portion can elastically displace in the installation direction or the opposite direction of the installation direction in the moving space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic structural diagram of the ink cartridge installation part of the printer according to an embodiment of the present invention;

[0019] Figure 2 Schematic structural diagram of the ink cartridge according to an embodiment of the present invention Figure 1 ;

[0020] Figure 3 Schematic internal structural diagram of the ink cartridge according to an embodiment of the present invention;

[0021] Figure 4 Schematic structural diagram of the elastic locking member according to an embodiment of the present invention;

[0022] Figure 5 Partial enlarged schematic diagram of the elastic locking member abutting against the positioning portion according to an embodiment of the present invention;

[0023] Figure 6 Cross-sectional schematic diagram of the locking of the ink cartridge and the ink cartridge installation part according to an embodiment of the present invention;

[0024] Figure 7Partial enlarged schematic diagram of the locking of the ink cartridge and the ink cartridge mounting portion according to an embodiment of the present invention;

[0025] Figure 8 Partial enlarged schematic diagram of the first unlocked state of the ink cartridge according to an embodiment of the present invention;

[0026] Figure 9 Partial enlarged schematic diagram of the second unlocked state of the ink cartridge according to an embodiment of the present invention;

[0027] Figure 10 Partial enlarged schematic diagram of the unlocking of the ink cartridge and the ink cartridge mounting portion according to an embodiment of the present invention;

[0028] Explanation of the reference numerals in the drawings: 1 ink cartridge, 11 ink cartridge body, 111 accommodating cavity, 12 ink outlet, 121 spring valve, 13 elastic locking member, 131 locking portion, 1311 first guiding surface, 1312 locking surface, 132 unlocking portion, 1321 second guiding surface, 1322 third guiding surface, 133 locking member body, 134 first elastic member, 135 second elastic member, 136 protrusion, 137 moving space, 2 ink cartridge mounting portion, 21 mounting groove, 22 positioning portion, 23 connecting portion. Detailed implementation manners

[0029] The following details the embodiments of the present invention, referring to Figures 1 to 10, an embodiment of the present invention provides an ink cartridge 1 with a new locking member, which can be detachably installed in the ink cartridge installation part 2 of the printer, wherein the ink cartridge installation part 2 is provided with a plurality of installation grooves 21, a positioning portion 22 is provided above the installation grooves 21, and a connecting portion 23 is provided below the installation grooves 21; the ink cartridge 1 comprises: an ink cartridge body 11, an ink outlet 12 and an elastic locking member 13, the ink outlet 12 and the elastic locking member 13 are provided on the ink cartridge body 11, and the elastic locking member 13 is provided with a locking portion 131 and an unlocking portion 132; when the ink cartridge 1 is installed in the ink cartridge installation part 2 along the installation direction, the locking portion 131 is engaged with the positioning portion 22; when the ink cartridge 1 is removed in the direction opposite to the installation direction, under the action of an external thrust F applied by the user along the installation direction, the unlocking portion 132 is elastically displaced along the installation direction and abuts against the positioning portion 22, so that the locking portion 131 is disengaged from the positioning portion 22. By providing an elastic locking member 13 on the ink cartridge body 11, when the ink cartridge 1 is installed, the positioning portion 22 of the ink cartridge installation portion 2 in the printer abuts against the locking portion 131, and the ink cartridge 1 is locked to the printer; when the ink cartridge 1 is removed, the unlocking portion 132 elastically displaces along the direction of the locking portion 131 and abuts against the positioning portion 22, separating the locking portion 131 from the positioning portion 22, thereby separating the ink cartridge 1 from the printer. Compared with the prior art, during the removal process of the ink cartridge 1 of the present application, the user only needs to gently push the ink cartridge 1 in the direction of the ink cartridge installation and apply an external thrust F to unlock the ink cartridge 1 and allow it to slowly pop out in parallel, thereby improving the user's operational convenience and safety in using the ink cartridge. At the same time, during the removal process, the ink cartridge 1 does not need to be rotated around the ink outlet 12, avoiding the situation where ink leaks when the ink outlet 12 is not yet closed.

[0030] This embodiment provides an ink cartridge 1, referring to Figure 1 , can be installed and removed in a printing device, which can be an inkjet printer, and the ink cartridge 1 supplies ink for the inkjet printer. The printing device has an ink cartridge installation portion 2, on which the ink cartridge 1 can be installed or removed, the ink cartridge installation portion 2 has an opening, and the ink cartridge 1 can be installed into the ink cartridge installation portion 2 along the opening, and the ink cartridge installation portion 2 has a plurality of installation slots 21, and the ink cartridge installation portion 2 can be connected to a plurality of ink cartridges 1, and each ink cartridge 1 is installed in a corresponding installation slot 21. In the embodiment of the present application, referring to Figure 1 The ink cartridge mounting portion 2 is provided with four mounting slots 21 arranged side by side. The four mounting slots 21 can be used to mount four ink cartridges 1 containing different ink colors. Each mounting slot 21 of the ink cartridge mounting portion 2 includes a positioning portion 22 and a connecting portion 23. After the ink cartridge 1 is installed in the mounting slot 21, the positioning portion 22 is used to engage with the ink cartridge 1 and lock the ink cartridge 1, thereby preventing an unstable connection between the ink cartridge 1 and the printing device during subsequent printing.

[0031] Further, refer to Figure 3, a spring valve 121 is provided inside the ink outlet 12. When the ink cartridge 1 is installed, the connecting portion 23 applies a force to the spring valve 121 to connect the ink outlet 12 with the connecting portion 23, enabling the ink cartridge 1 to supply ink to the printing device. Specifically, during the connection process between the connecting portion 23 and the ink outlet 12, the connecting portion 23 applies a force to the spring valve 121 to keep the spring valve 121 in a compressed state, thereby opening the ink supply channel in the ink outlet 12; when the ink cartridge 1 is removed, under the action of an external thrust F applied by the user along the ink cartridge installation direction, the connecting portion 23 is disengaged from the spring valve 121. When the user stops applying the external thrust F, the spring valve 121 returns from the compressed state to the natural state, changing the ink supply channel in the ink outlet 12 from the open state to the closed state, preventing ink from leaking out of the ink outlet 12. At the same time, the ink cartridge 1 moves and pops out in the opposite direction of the installation direction. Further, referring to Figure 2 , the ink outlet 12 is located at the bottom of the ink cartridge body 11, and the elastic locking member 13 is located at the top of the ink cartridge body 11 on the side away from the ink outlet 12. Specifically, the elastic locking member 13 is provided on the top of the ink cartridge body 11 on the side away from the ink outlet 12. Further, the ink cartridge body 11 includes a receiving cavity 111 for containing ink, and the ink outlet 12 is connected to the receiving cavity 111.

[0032] Further, in the embodiment of the present application, in combination with Figures 2 to 10As shown, the ink cartridge 1 includes an ink cartridge body 11, an ink outlet 12, and an elastic locking member 13. The ink cartridge body 11 includes a receiving cavity 111 for containing ink. The elastic locking member 13 includes a locking portion 131 and an unlocking portion 132; when the ink cartridge 1 is installed on the ink cartridge installation portion 2, the locking portion 131 is engaged with the positioning portion 22 in the installation groove 21, so that the ink cartridge 1 is stably connected within the ink cartridge installation portion 2; when the ink cartridge 1 is removed, under the action of an external thrust F applied by the user along the ink cartridge installation direction, the unlocking portion 132 undergoes an elastic displacement along the ink cartridge installation direction and abuts against the positioning portion 22, causing the locking portion 131 to be separated from the positioning portion 22. Specifically, in the embodiment of the present application, the elastic locking member 13 further includes a locking member body 133, a first elastic member 134, a second elastic member 135, and a protrusion 136; the locking portion 131, the unlocking portion 132, and the second elastic member 135 are all located on the upper end surface of the locking member body 133; the locking portion 131 is located on one side of the locking member body 133 close to the ink outlet 12, and the unlocking portion 132 is located on the other side of the locking member body 133; the unlocking portion 132 is in a "C" shape. The unlocking portion 132 at least partially surrounds the locking portion 131. The first elastic member 134 is disposed below the locking portion 131, with one end fixed to the lower end surface of the locking member body 133 and the other end connected to the ink cartridge body 11; the second elastic member 135 is disposed between the locking portion 131 and the unlocking portion 132, with one end connected to the locking portion 131 and the other end connected to the unlocking portion 132. In an embodiment of the present application, the first elastic member 134 and the second elastic member 135 are springs or elastic rubbers. The elastic locking member 13 is detachably connected to the ink cartridge body 11 through protrusions 136 provided on both sides of the locking member body 133, and grooves are provided at corresponding positions of the protrusions 136 in the ink cartridge body 11, and the grooves are not shown in the figures of the embodiment of the present application.

[0033] Further, referring to Figure 4 , a moving space 137 is formed between the locking member body 133 and the locking portion 131, and the unlocking portion 132 can undergo an elastic displacement along the installation direction or the opposite direction of the installation direction in the moving space 137. Of course, the present invention does not limit the specific structure of the locking member body 133. Preferably, the locking member body 133 is in an L shape, and the unlocking portion 132 is designed in a "C" shape, so that the locking portion 131 can slide freely therein and maintain orientation, thereby ensuring reliable execution of the locking action.

[0034] Furthermore, continuing to refer to Figure 4, the locking portion 131 includes a first guiding surface 1311 and a locking surface 1312. The first guiding surface 1311 is an inclined surface that slopes upward from left to right. The locking surface 1312 is located on the side of the inclination angle of the first guiding surface 1311. The locking surface 1312 is an arc surface. The distance of the locking surface 1312 relative to the ink outlet 12 is greater than the distance of the first guiding surface 1311 relative to the ink outlet 12. The unlocking portion 132 includes a second guiding surface 1321 and a third guiding surface 1322. The second guiding surface 1321 is an inclined surface that slopes upward from left to right. The third guiding surface 1322 is an inclined surface that slopes downward from left to right. The second guiding surface 1321 and the third guiding surface 1322 are oppositely arranged. In the installation direction of the ink cartridge 1, the distance of the second guiding surface 1321 relative to the ink outlet 12 is less than the distance of the third guiding surface 1322 relative to the ink outlet 12.

[0035] In the embodiment of the present application, the designs of the first guiding surface 1311, the locking surface 1312, and the first elastic member 134 play a crucial role in guiding and finally locking during the installation of the ink cartridge 1. During the installation of the ink cartridge 1, refer to Figures 4 to 7 , when the locking portion 131 contacts the positioning portion 22 of the ink cartridge installation portion 2, the first guiding surface 1311 first abuts against the positioning portion 22 and guides the positioning portion 22. With the movement of the ink cartridge 1 and the inclined design of the first guiding surface 1311, the positioning portion 22 generates a downward acting force on the elastic locking member 13, causing the first elastic member 134 to be compressed, that is, the elastic locking member 13 undergoes a downward elastic displacement to make way for the positioning portion 22 so that the positioning portion 22 can smoothly reach the position where it is engaged with the locking surface 1312; when the positioning portion 22 is engaged with the locking surface 1312, the positioning portion 22 no longer generates a downward acting force on the elastic locking member 13, that is, the first elastic member 134 returns to its natural state; at this time, the ink cartridge 1 is stably connected to the ink cartridge installation portion 2 because when the ink cartridge 1 is advanced to the position where the locking surface 1312 is engaged with the positioning portion 22, the ink cartridge 1 is on the one hand subjected to the elastic force of the spring valve 121 in the ink outlet 12 along the disassembly direction, and on the other hand is subjected to the abutting force of the positioning portion 22 along the installation direction. The two force acting directions are opposite, so that the ink cartridge 1 can be fixed in the ink cartridge installation portion 2.

[0036] Furthermore, refer to Figure 4 , Figure 7 and Figure 8During the disassembly of the ink cartridge 1, under the external thrust F1 along the installation direction, the ink cartridge 1 moves along the installation direction. At this time, the second elastic member 135 is compressed, and the unlocking portion 132 elastically displaces toward the installation direction and abuts against the positioning portion 22, so that the locking portion 131 is disengaged from the positioning portion 22. Specifically, the second guide surface 1321 of the unlocking portion 132 abuts against the positioning portion 22 and pushes the positioning portion 22 out. As the ink cartridge 1 moves along the installation direction, the positioning portion 22 is pushed out and abuts against the second guide surface 1321 and the third guide surface 1322 in turn. When the unlocking portion 132 moves to a position where the second guide surface 1321 and the first guide surface 1311 are close to overlapping, the positioning portion 22 stays on one side of the third guide surface 1322. Figure 8 During this process, the positioning portion 22 exerts a downward force on the elastic locking member 13, compressing the first elastic member 134. This causes the elastic locking member 13 to undergo a downward elastic displacement, thereby giving way to the positioning portion 22, allowing it to smoothly reach and rest on the side of the third guide surface 1322. When the user stops applying the thrust, the spring valve 121 in the ink outlet 12 returns from its compressed state to its natural state. Under the influence of the elastic potential energy of the spring valve 121, the ink cartridge 1 is ejected in the direction opposite to the installation direction. During this process, the positioning portion 22 skips over the second guide surface 1321 and the locking surface 1312, moving directly from the side of the third guide surface 1322 to the side of the first guide surface 1311. At this point, the ink cartridge 1 is unlocked and ejected from the ink cartridge installation portion 2. Simultaneously, the second elastic member 135 returns from its compressed state to its natural state, causing the unlocking portion 132 to undergo an elastic displacement in the direction opposite to the installation direction, returning to its initial position, ready for the next use of the ink cartridge.

[0037] The present application provides an elastic locking member 13 on the ink cartridge 1. During the installation or removal process of the ink cartridge 1, the elastic locking member 13 generates elastic displacement in the direction of gravity when engaging, locking, or disengaging with the positioning portion 22 of the ink cartridge mounting portion 2, thereby making way for the positioning portion 22, so that the ink cartridge body 11 is always pushed in or ejected in a direction parallel to the ink cartridge installation direction. Compared with the prior art, the user only needs to gently push the ink cartridge in the direction of the ink cartridge installation to unlock the ink cartridge 1 and allow the ink cartridge 1 to slowly eject in parallel, thereby improving the user's convenience and safety in using the ink cartridge. At the same time, the ink cartridge 1 does not need to rotate around the ink outlet 12 as the center, avoiding the problem of ink leakage caused by the centrifugal force when the ink outlet 12 is not yet closed due to the rotation of the ink cartridge 1.

[0038] It should be noted that in the description of the present invention, when it comes to the description of directions, such as the directions or positional relationships indicated by up, down, front, back, left, right, etc., they are all based on the directions or positional relationships 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 direction, be constructed or operated in a specific direction, and should not be construed as a limitation to the present invention.

[0039] In the description of the present invention, the meaning of "several" is one or more, the meaning of "multiple" is two or more, and understandings such as "greater than", "less than", "exceeding", etc. do not include the corresponding number, while understandings such as "above", "below", "within", etc. include the corresponding number. If there is a description of "first" or "second", etc., it is only for the purpose of distinguishing technical features and cannot 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.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "install", "connect", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0041] 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 based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An ink cartridge with a novel locking member, which can be detachably mounted in an ink cartridge mounting portion (2) of a printer, wherein the ink cartridge mounting portion (2) is provided with a plurality of mounting slots (21), a positioning portion (22) is provided above the mounting slots (21), and a connecting portion (23) is provided below the mounting slots (21); the ink cartridge (1) is characterized in that: Comprising: An ink cartridge body (11), an ink outlet (12) provided on the ink cartridge body (11), and an elastic locking member (13). The elastic locking member (13) is provided with a locking portion (131), an unlocking portion (132), and a first elastic member (134). The locking portion (131) includes a first guiding surface (1311) and a locking surface (1312). The unlocking portion (132) includes a second guiding surface (1321) and a third guiding surface (1322). The first guiding surface (1311) slopes upward from left to right. The locking surface (1312) is located on the side of the inclination angle of the first guiding surface (1311), and the locking surface (1312) is an arc surface. The second guiding surface (1321) slopes upward from left to right, and the third guiding surface (1322) slopes downward from left to right. When the ink cartridge (1) is installed on the ink cartridge installation portion (2), when the first guiding surface (1311) abuts against the positioning portion (22) and guides the positioning portion (22), the first elastic member (134) is in a compressed state until the locking surface (1312) engages with the positioning portion (22), and the first elastic member (134) is in a natural state. When the ink cartridge (1) is disassembled, the positioning portion (22) contacts the second guiding surface (1321) and the third guiding surface (1322) in sequence under the action of an external thrust and finally stays on one side of the third guiding surface (1322). The positioning portion (22) generates a downward force on the elastic locking member (13), so that the elastic locking member (13) is compressed and yields to the positioning portion (22), causing the locking portion (131) to disengage from the positioning portion (22). The elastic locking member (13) includes a second elastic member (135). The second elastic member (135) is provided between the locking portion (131) and the unlocking portion (132), and the unlocking portion (132) is in a "C" shape.

2. The ink cartridge according to claim 1, wherein A spring valve (121) is provided in the ink outlet (12). When the ink cartridge (1) is installed, the connecting portion (23) applies a force to the spring valve (121) to connect the ink outlet (12) with the connecting portion (23). When the ink cartridge (1) is disassembled, under the action of an external thrust, the connecting portion (23) disengages from the spring valve (121). When the external thrust stops acting, the spring valve (121) returns from the compressed state to the natural state, causing the ink cartridge (1) to move in the opposite direction of the installation direction.

3. The ink cartridge according to claim 2, wherein: The ink outlet (12) is located at the bottom of the ink cartridge body (11), and the elastic locking member (13) is located at the top of the ink cartridge body (11) on the side away from the ink outlet (12).

4. The ink cartridge according to claim 3, wherein The ink cartridge body (11) includes a receiving cavity (111) for containing ink, and the ink outlet (12) is communicated with the receiving cavity (111).

5. The ink cartridge according to claim 4, wherein: The elastic locking member (13) further comprises a locking member body (133) and a protrusion (136), wherein the locking portion (131), the unlocking portion (132) and the second elastic member (135) are all located on the upper end surface of the locking member body (133); one end of the first elastic member (134) is fixed to the lower end surface of the locking member body (133), and the other end is connected to the ink cartridge body (11).

6. The ink cartridge according to claim 5, wherein: When the ink cartridge (1) is disassembled, after the thrust is stopped, the spring valve (121) changes from a compressed state to a natural state, and under the influence of the elastic potential energy of the spring valve (121), the ink cartridge (1) moves in a direction opposite to the installation direction. During this process, the positioning portion (22) skips the second guide surface (1321) and the locking surface (1312) and moves directly from one side of the third guide surface (1322) to one side of the first guide surface (1311).

7. The ink cartridge according to claim 6, wherein: When the ink cartridge (1) is disassembled, after the external thrust stops, the second elastic member (135) changes from a compressed state back to a natural state, so that the unlocking portion is reset to an initial position.

8. The ink cartridge according to claim 5, wherein: A moving space (137) is formed between the locking member body (133) and the locking portion (131), and the unlocking portion (132) can elastically displace in the moving space (137) along the installation direction or in the opposite direction of the installation direction.

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