Ink box

Abstract

The utility model discloses an ink box. According to the embodiment, the ink box is mounted on the mounting part of the printing head; a rotatable swing arm and a locking piece arranged on the swing arm are arranged on the mounting part, and the locking piece is used for fixing the ink box at a preset position of the mounting part; the ink box comprises a box body, a guide groove structure and a movable part, and the guide groove structure is arranged on the lower end face of the box body and used for guiding the locking part. The movable part is arranged in the guide groove structure and can generate position change, and the movable part can be matched with the locking part to position the box body when the ink box is installed at a preset position. The utility model has the advantage of simple structure.

Description

Technical Field

[0001] The utility model relates to the field of inkjet printing, and particularly relates to an ink cartridge for supplying ink to an inkjet printing device. Background Art

[0002] An ink cartridge is a container for supplying ink to a print head of an inkjet imaging device and is detachably mounted on the print head. When the ink cartridge is mounted on the print head, the ink cartridge needs to be locked on the print head. Summary of the Utility Model

[0003] The main object of the utility model is to provide an ink cartridge with a simple structure.

[0004] To achieve the above main object, the first aspect of the utility model provides an ink cartridge mounted on a mounting portion of a print head; the mounting portion is provided with a rotatable swing arm and a locking member arranged on the swing arm, and the locking member is used for fixing the ink cartridge at a predetermined position on the mounting portion; characterized in that: the ink cartridge includes a cartridge body, a guide groove structure and a movable member, the guide groove structure is arranged on the lower end surface of the cartridge body and is used for guiding the locking member during the installation process of the ink cartridge; the movable member is arranged in the guide groove structure and can change its position, and it can cooperate with the locking member to position the cartridge body when the ink cartridge is installed at the predetermined position.

[0005] In the above technical solution of the utility model, by arranging a movable member that can change its position in the guide groove structure to cooperate with the locking member, the movable member can cooperate with the locking member to complete the positioning of the cartridge body when the ink cartridge is installed at the predetermined position, which has the advantages of simple structure and strong practicability.

[0006] According to a specific embodiment of the utility model, the movable member is arranged on the movement path of the locking member, and during the installation process of the ink cartridge, the movable member can move away from the movement path of the locking member, and at this time the movable member is located at the avoidance position; and when the ink cartridge is installed at the predetermined position, the movable member cooperates with the locking member to position the cartridge body, and at this time the movable member is located at the locking position.

[0007] According to a specific embodiment of the utility model, the movable member is rotatably arranged in the guide groove structure; the rotation axis of the movable member is perpendicular to the installation direction of the ink cartridge.

[0008] According to a specific embodiment of the utility model, the ink cartridge includes an elastic member, and when the movable member moves away from the path of the locking member, the elastic member will be compressed, and when the ink cartridge is installed at the predetermined position, the elastic member drives the movable member to reset.

[0009] According to a specific embodiment of the present utility model, the movable member has a first abutting portion and a second abutting portion; when the ink cartridge is installed at a predetermined position, the first abutting portion is located at the relative front side of the locking member and positions the locking member; during the installation process of the ink cartridge, the locking member can abut against the second abutting portion so that the movable member moves away from the movement path of the locking member.

[0010] According to a specific embodiment of the present utility model, a guiding baffle is provided on the second abutting portion to prevent deviation when the locking member and the second abutting portion move relative to each other.

[0011] According to a specific embodiment of the present utility model, the guiding groove structure includes a first guiding groove, a second guiding groove, and a third guiding groove that communicate with each other; the first guiding groove extends along the installation direction of the ink cartridge and is used to guide the locking member during the installation process of the ink cartridge so that the locking member can move to a locking engagement position that cooperates with the movable member; the second guiding groove is located at the relative rear side of the first guiding groove and is used to guide the locking member to continue to move along the installation direction of the ink cartridge and separate from the movable member; the third guiding groove extends along the installation direction of the ink cartridge and is located beside the first guiding groove and is used to guide the locking member when the ink cartridge moves in the opposite direction of the installation direction.

[0012] A second aspect of the present utility model provides an ink cartridge that can be electrically connected to an electrical connection portion of a print head. The electrical connection portion is provided with a terminal seat; the ink cartridge includes a cartridge body and a chip provided on the cartridge body, and the chip is cooperatively connected to a terminal on the terminal seat; characterized in that: a limiting portion corresponding to the chip is provided on the cartridge body, and the limiting portion is used to provide limiting guidance for the terminal seat.

[0013] According to a specific embodiment of the present utility model, the limiting portion includes a first limiting plate, and the first limiting plate is disposed opposite to the chip and is respectively located on opposite sides of the terminal seat after the ink cartridge is installed.

[0014] According to a specific embodiment of the present utility model, the limiting portion further includes a second limiting plate, and a U-shaped groove is formed among the first limiting plate, the second limiting plate, and the chip.

[0015] In the present utility model, by providing the limiting portion to perform limiting guidance on the terminal seat, axial deflection of the cartridge body can be prevented, thereby maintaining the effectiveness of the electrical connection between the chip and the terminal.

[0016] In order to more clearly illustrate the purpose, technical solution, and advantages of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural diagram of an embodiment of the ink cartridge of the present utility model;

[0018] Figure 2 is Figure 1Schematic diagram of the ink cartridge and print head assembly;

[0019] Figure 3 is Figure 1 The first three-dimensional view showing the specific structure at the lower end face in the ink cartridge;

[0020] Figure 4 is Figure 3 Exploded view;

[0021] Figure 5 is Figure 3 The structure diagram of the movable part in;

[0022] Figure 6 is Figure 1 The second three-dimensional view showing the specific structure at the lower end face in the ink cartridge;

[0023] Figure 7 is Figure 2 The cross-sectional view of the cooperation between the locking part and the movable part when the ink cartridge in is installed at the predetermined position;

[0024] Figure 8 Another structure diagram of the ink cartridge embodiment of the present utility model;

[0025] Figure 9 is Figure 8 Schematic diagram of the ink cartridge and print head assembly;

[0026] Figure 10 Another structure diagram of the ink cartridge embodiment of the present utility model;

[0027] Figure 11 is Figure 10 Schematic diagram of the ink cartridge and print head assembly. Detailed implementation mode

[0028] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0029] Many specific details are set forth in the following description in order to provide a thorough understanding of the present utility model. However, the present utility model can be implemented in other ways different from those described herein. Therefore, the scope of protection of the present utility model is not limited to the limitations of the specific embodiments disclosed below.

[0030] Such as Figure 1As shown in the figure, the ink cartridge 100 of the embodiment includes a cartridge body 10 having a substantially cuboid shape, and an air communication hole 11, a chip 12, an air hole 13, and an ink outlet 14 are provided on the cartridge body 10. The air communication hole 11 is used to connect the inside of the cartridge body 10 to the external atmosphere. The chip 12 is used for electrical connection with the print head 200 of an inkjet printing device. The air hole 13 is used to connect with an air pump of the inkjet printing device. The ink outlet 14 is used to supply the ink in the cartridge body 10 to the print head 200 of the inkjet printing device.

[0031] In the present embodiment, the ink cartridge 100 is detachably mounted on the mounting portion 210 of the print head 200. A rotatable swing arm 211 and a locking member 212 provided on the swing arm 211 are provided on the mounting portion 210. The locking member 212 is used to fix the ink cartridge 100 at a predetermined position on the mounting portion 210. Among them, the swing arm 211 has a vertical axis of rotation L, and the swing arm 211 can rotate around the axis of rotation L, driving a change in the position of the locking member 212.

[0032] As Figure 2 shown in the installation posture of the ink cartridge 100, the ink cartridge 100 is installed along the installation direction M (forward direction). It should be noted here that the print head 200 is provided with an elastic element, such as a helical spring. When the ink cartridge 100 is installed along the installation direction M, it needs to bear a resistance force from the elastic element, and the direction of the resistance force is opposite to the installation direction M of the ink cartridge 100. Among them, during the installation process of the ink cartridge 100, specifically, the front end face of the ink cartridge 100 engages with the elastic element.

[0033] The ink cartridge 100 includes a guide groove structure 20 and a movable member 30. The guide groove structure 20 is provided on the lower end face 10a of the cartridge body 10 and is used to guide the locking member 212. The movable member 30 is at least partially disposed in the guide groove structure 20 and can change its position. It can cooperate with the locking member 212 to position the cartridge body 10 (ink cartridge) when the ink cartridge 100 is installed at a predetermined position. Among them, when the movable member 30 changes its position, it can move in a direction away from the locking member 212, such as upward, leftward, or rightward, and the movable member 30 can abut against the locking member 212 to realize the positioning of the ink cartridge when the ink cartridge is installed at a predetermined position. In this embodiment, it is preferably that the movable member moves upward when its position changes.

[0034] Among them, the movable member is disposed on the movement path of the locking member. During the installation process of the ink cartridge, the movable member can move away from the movement path of the locking member. At this time, the movable member is in the avoidance position. When the ink cartridge is installed at a predetermined position, the movable member cooperates with the locking member to position the cartridge body. At this time, the movable member is in the locking position.

[0035] Specifically, the movable member 30 is disposed on the movement path of the locking member 212 (relative to the guide groove structure 20); wherein, the movable member 30 is partially or entirely located within the guide groove structure 20; during the installation of the ink cartridge 100, the movable member 30 can be moved away from the movement path of the locking member 212 (the movable member 30 moves to the avoidance position), and a position change occurs when the ink cartridge 100 is installed at the predetermined position (the movable member 30 moves to the locking position) to cooperate with the locking member 212 to position the ink cartridge 100.

[0036] As Figures 3 - 4 shown, an avoidance portion 21 corresponding to the movable member 30 is provided in the guide groove structure 20. When the movable member 30 moves away from the movement path of the locking member 212, it can be switched to enter the avoidance portion 21, thereby forming an avoidance of the locking member 212. In other words, the avoidance portion 21 is used to accommodate the movable member 30 when it moves away from the movement path of the locking member 212; wherein, an elastic member 40 for driving the movable member 30 to reset is provided in the avoidance portion 21. When the movable member 30 moves away from the path of the locking member 212, the elastic member 40 will be compressed, and when the ink cartridge is installed at the predetermined position, the elastic member 40 drives the movable member 30 to generate a position change, that is, the movable member 30 moves in the direction away from the cartridge body 10 under the action of the elastic member 40 to move to the avoidance position. After the position of the movable member 30 changes under the drive of the elastic member 40, it can move to the locking position. At this time, the movable member 30 can abut against the locking member 212 to restrict the locking member 212 from moving in the opposite direction of the installation direction M of the ink cartridge 100, as Figure 7 shown; at this time, under the action of the resistance force from the print head 200, the ink cartridge urges the locking member 212 to abut against the movable member 30 and locks the ink cartridge.

[0037] Among them, the movable member 30 has a first abutting portion 31 for forming an abutting fit with the locking member 212 when the ink cartridge 100 is installed at the predetermined position (that is, the movable member 30 is in the locking position). When the ink cartridge is installed at the predetermined position, the first abutting portion 31 of the movable member 30 is driven by the elastic member 40 to change its position to the relative front side of the locking member 212; as Figures 4 - 5 shown, the first abutting portion 31 is specifically planar, and the first abutting portion 31 is preferably perpendicular to the direction of the resistance force from the print head 200. When the locking member 212 abuts against the first abutting portion 31, the position of the movable member 30 will not change (that is, the movable member 31 will not move towards the cartridge body 10), maintaining the stability of the installation of the ink cartridge 100. In an alternative embodiment, the first abutting portion 31 can also be a groove-shaped structure adaptable to the locking member 212, such as a V-shaped / U-shaped groove, etc.

[0038] In this embodiment, the movable member 30 is rotatably disposed in the guide groove structure 20, and during the installation of the ink cartridge, the locking member 212 drives the movable member 30 to change position; in other embodiments, the movable member 30 may also be slidably disposed in the guide groove structure 20, and during the installation of the ink cartridge, the locking member 212 directly drives the movable member 30 to change position. The specific structure of the sliding movable member 30 is not described here. Figures 3 - 4 , a rotating shaft 32 is provided on the movable member 30, a connecting hole 22 is provided in the guide groove structure 20, and the movable member 30 is rotatably arranged in the guide groove structure 20 through the rotating shaft 32; wherein the elastic member 40 is specifically a spring arranged in the avoidance portion 21; during the installation process of the ink cartridge, the locking member 212 can contact and form an abutment with the second abutment portion 33 of the movable member 30, so that the movable member moves away from the movement path of the locking member 212, that is, the movable member 30 moves from the locking position to the avoidance position; specifically, the locking member When the second contacting portion 33 of the movable member 30 abuts against the locking member 212, the movable member 30 is driven to rotate forwardly around the rotating shaft 32 until it enters the avoiding portion 21 and compresses the elastic member 40; when the ink cartridge is installed to the predetermined position, the movable member 30 is driven by the rebound force of the elastic member 40 to rotate in the opposite direction around the rotating shaft 32 to change the position, that is, the movable member 30 moves from the avoiding position to the locking position, and the movable member 30 after the position change can limit the locking member 212 from moving in the opposite direction of the installation direction M of the ink cartridge 100. In an optional embodiment, the elastic member 40 can also be a torsion spring arranged on the rotating shaft 32.

[0039] The rotating shaft 32 in this embodiment is perpendicular to the installation direction M of the ink cartridge 100. Specifically, the rotating shaft 32 is arranged along the left-right direction; in other embodiments, the rotating shaft 32 can also be arranged along the up-down direction; accordingly, the rotating shaft 32 can also be arranged to be inclined relative to the left-right direction or inclined relative to the up-down direction.

[0040] The movable member 30 is preferably confined in the guide groove structure 20 and can reciprocate in a small range, that is, the movable member 30 will not be separated from the guide groove structure 20; Figure 4 As shown, the avoidance portion 21 in the embodiment is specifically a groove-shaped structure formed by being recessed upward along the bottom wall of the guide groove structure 20, a notch 23 is provided on the bottom wall of the guide groove structure 20, and the movable part 30 is provided with a protrusion 34 that can extend into the notch 23. During the rotation of the movable part 30 around the rotating shaft 32, the protrusion 34 is always located in the notch 23, thereby limiting the swing angle range of the movable part 30. In other words, the protrusion 34 and the notch 23 cooperate to form a structure that prevents the movable part 30 from escaping from the guide groove 20.

[0041] When the ink cartridge is installed at a predetermined position, the locking member 212 preferably is misaligned with the movable member 30 in the installation direction M of the ink cartridge. That is, before the ink cartridge is installed at the predetermined position, the locking member 212 does not overlap with the movable member 30 in the installation direction M until the locking member 212 no longer contacts the second abutting portion 33 of the movable member 30. At this time, under the action of the elastic member 40, the movable member 30 rotates around the rotation shaft 32, so that the first abutting portion 31 of the movable member 30 moves to the relative front side of the locking member 212. Under the action of the resisting force from the print head 200, the first abutting portion 31 of the movable member 30 abuts against the locking member 212, completing the locking of the ink cartridge 10. At the same time, the protruding portion 34 abuts against the bottom wall of the guide groove structure 20 and is limited in position, and cannot continue to rotate under the elastic member 40; in other embodiments, when the ink cartridge is installed at the predetermined position, the protruding portion 34 may not abut against the bottom wall of the guide groove structure 20. At this time, the movable member 30 is not completely reset to the initial position state where it does not contact the locking member 212.

[0042] In this embodiment, when the ink cartridge is installed at the predetermined position, the locking member 212 preferably passes over the movable member 30 and is misaligned with the movable member 30, so that the movable member 30 can produce a relatively obvious position change under the action of the elastic member 40.

[0043] As Figure 6 shown, the guide groove structure 20 in the embodiment includes a first guide groove 20a, a second guide groove 20b, and a third guide groove 20c; the first guide groove 20a extends along the installation direction M of the ink cartridge 100, and is mainly used to guide the locking member 212 during the installation process of the ink cartridge 100, so that the locking member 212 can be moved to the locking engagement position (locking position) that cooperates with the movable member 30, as Figure 7 shown; the second guide groove 20b is located at the relative rear side of the first guide groove 20a, and is used to guide the locking member 212 to continue to move along the installation direction M of the ink cartridge and separate from the movable member 30; the third guide groove 20c extends along the installation direction of the ink cartridge and is located beside the first guide groove 20a, and is used to guide the locking member 212 when the ink cartridge moves in the opposite direction of the installation direction M. Among them, the first guide groove 20a, the second guide groove 20b, and the third guide groove 20c in the embodiment communicate with each other.

[0044] The second guide groove 20b has a guiding wall 24, and the guiding wall 24 is preferably an arc-shaped wall or an inclined wall to guide the locking member 212 to move to the rear of the third guide groove 20c during the unlocking process of the ink cartridge 100. At this time, under the action of the resisting force from the print head 200, the locking member 212 can move into the third guide groove 20c and finally move out of the third guide groove 20c, and the ink cartridge 100 can be disassembled.

[0045] Please refer to again Figures 3 - 5, the movable member 30 has a side end face 35 forming the side wall of the third guide groove 20c, and the side end face 35 is used for laterally limiting the locking member 212 when it moves in the third guide groove 20c. It can be understood that in other embodiments, the third guide groove 20c may also be provided with a side wall separately.

[0046] Further, a limiting protrusion 36 protruding rearward from the first abutting portion 31 may be provided on the side end face 35. The limiting protrusion 36 is used for laterally limiting the locking member 212 in the locked engagement position and restricting the locking member 212 from moving laterally towards the side of the third guide groove 20c. Specifically, the limiting protrusion 36 has a certain protruding distance and can also guide the movement of the locking member 212 at the beginning stage when the locking member 212 moves along the guiding wall 24.

[0047] In this embodiment, the second abutting portion 33 of the movable member 30 is preferably arc-shaped or inclined-plane-shaped, so that at the stage when the locking member 212 contacts the movable member 30 during the installation of the ink cartridge 100, the locking member 212 can gradually drive the movable member 30 to rotate and form an avoidance of the locking member 212. The above-mentioned cooperative movement process of the locking member 212 and the movable member 30 has the advantage of good smoothness. Preferably, a guiding baffle 37 may be provided on the second abutting portion 33 of the movable member 30. The guiding baffle 37 is used for keeping the locking member 212 moving along the M direction on the second abutting portion 33 of the movable member 30 all the time and preventing the locking member 212 from deviating from the second abutting portion 33 of the movable member 30 during the movement.

[0048] In this embodiment, the first guide groove 20a is preferably provided with one or more guiding blocks 25. The guiding blocks 25 are used for guiding the locking member 212 to accurately cooperate with the second abutting portion 33 of the movable member 30, that is, no matter what position state the locking member 212 is in at the beginning stage of the ink cartridge installation, under the action of the guiding blocks 25, the locking member 212 can be guided to correctly enter the guide groove structure 20 and cooperate with the second abutting portion 33 of the movable member 30.

[0049] Figure 6The arrow in [Figure] shows the movement path of the locking member 212 within the guide groove structure 20 during the cartridge locking and unlocking operations; in this embodiment, the cartridge locking operation process is as follows: Push the cartridge 100 along the cartridge installation direction M. The locking member 212 enters the first guide groove 20a and abuts against the second abutting portion 33 of the movable member 30, while driving the movable member 30 to rotate positively around the rotating shaft 32 and compress the elastic member 40; when the cartridge 100 is installed to the predetermined position, the locking member 212 moves past the movable member 30 in the front-rear direction. At this time, the locking member 212 no longer forms an abutting limit on the second abutting portion 33 of the movable member 30; under the action of the elastic member 40, the movable member 30 rotates in the reverse direction and causes the first abutting portion 31 of the movable member 30 to be located on the relatively front side of the locking member 212; at the same time, under the action of the resistance force from the print head 200, the locking member 212 abuts against the first abutting portion 31 of the movable member 30 to lock the cartridge 100.

[0050] In this embodiment, the cartridge unlocking operation process is as follows: Push the cartridge 100 again along the cartridge installation direction M, so that the locking member 212 continues to move under the guidance of the second guide groove 20b until it is located behind the third guide groove 20c; at this time, release the cartridge 100. Under the action of the resistance force from the print head 200, the cartridge 100 is pushed in the reverse direction of the installation direction M. The locking member 212 slides into the third guide groove 20c beside the second guide groove 20b and finally exits the third guide groove 20c, and then enters the first guide groove 20a and exits the first guide groove 20a in the reverse direction of the installation direction M to complete the unlocking and disassembly of the cartridge 100. In this embodiment, the chip 12 is cooperatively connected with the electrical connection portion 220 of the print head 200; wherein, the electrical connection portion 220 is provided with a terminal seat 221 and terminals arranged on the side surface of the terminal seat 221, and the chip 12 is specifically electrically connected to the terminals.

[0051] In one implementation, the cartridge 100 is provided with a limiting portion 50 corresponding to the terminal seat 221. The limiting portion 50 is arranged on the cartridge body 10 and is close to the chip 12; specifically, the limiting portion 50 can provide limiting guidance for the terminal seat 221 during the cartridge installation process to prevent the cartridge from deflecting during installation, resulting in poor contact between the chip 12 and the terminals.

[0052] As Figures 8 to 9 shown, the limiting portion 50 includes a first limiting plate 51. The first limiting plate 51 is arranged opposite to the chip 12 and is located on the opposite sides of the terminal seat 221 respectively after the cartridge is installed; wherein, a slot shape adapted to the terminal seat 221 is formed between the first limiting plate 51 and the chip 12. During the cartridge installation process, the first limiting plate 51 can effectively eliminate the force exerted on the chip 12 by the terminals (and / or the terminal seat 221) to avoid axial deflection of the cartridge body 10, which is beneficial to maintaining the effectiveness and stability of the electrical connection between the chip 12 and the terminals.

[0053] In this embodiment, the chip 12 is preferably disposed on the cartridge body 10 through a chip socket 15. The chip socket 15 can improve the stability of the chip and is conducive to forming a more effective electrical connection between the chip 12 and the terminal. It can be understood that, when the design requirements are met, the chip 12 can also be directly disposed on the cartridge body 10.

[0054] Furthermore, as Figures 10 - 11 shown, the limiting portion 50 may further include a second limiting plate 52. The first limiting plate 51 is connected to the chip socket 15 through the second limiting plate 52. Preferably, the chip socket 15, the first limiting plate 51 and the second limiting plate 52 are preformed as a whole to maintain the structural strength.

[0055] Wherein, a U-shaped groove is formed among the first limiting plate 51, the second limiting plate 52 and the chip socket 15. During the installation process of the ink cartridge 100, the second limiting plate 52 can also limit the terminal seat 221 in the vertical direction, that is, the first limiting plate 51, the second limiting plate 52 and the chip socket 15 cooperate with the terminal seat 221 in three directions to form a limit, which is more conducive to improving the connection stability between the chip 12 and the terminal. In addition, please refer to Figure 8 and Figure 10 . Based on the existence of the second limiting plate 52, the size of the second limiting plate 52 can also be reduced to facilitate the connection between the chip 12 and the terminal.

[0056] In this embodiment, the aperture of the ink outlet 14 can also be appropriately reduced to reduce the fitting gap between the ink outlet 14 and the ink guide tube 230 on the print head 200, thereby further improving the smoothness during the installation process of the ink cartridge 10. Specifically, a sealant capable of elastic deformation is provided at the ink guide tube 230 or the ink outlet 14 to maintain the connection effectiveness between the ink guide tube 230 or the ink outlet 14.

[0057] Although the present utility model is disclosed above with specific embodiments, these specific embodiments are not intended to limit the scope of implementation of the present utility model. Any person skilled in the art can make some changes / modifications without departing from the scope of the present utility model. That is, any equivalent changes / modifications made in accordance with the present utility model shall be covered by the protection scope of the present utility model.

Claims

1. An ink cartridge is installed on the installation part of a print head; a rotatable swing arm is provided on the installation part and a locking member is arranged on the swing arm, and the locking member is used for fixing the ink cartridge at a predetermined position on the installation part; characterized in that: The ink cartridge includes a cartridge body, a guide groove structure, and a movable member. The guide groove structure is provided on the lower end surface of the cartridge body and is used to guide the locking member. At least part of the movable member is disposed within the guide groove structure and is capable of changing its position. When the ink cartridge is installed at a predetermined position, it can cooperate with the locking member to position the cartridge body.

2. The ink cartridge according to claim 1, wherein: The movable member is disposed on the movement path of the locking member. During the installation process of the ink cartridge, the movable member can move away from the movement path of the locking member, and at this time, the movable member is in the avoidance position. When the ink cartridge is installed at a predetermined position, the movable member cooperates with the locking member to position the cartridge body, and at this time, the movable member is in the locking position.

3. The ink cartridge according to claim 2, wherein: The movable member moves between the avoidance position and the locking position by rotation or translation.

4. The ink cartridge according to claim 3, characterized in that: The movable member is rotatably disposed within the guide groove structure; the rotation axis of the movable member is perpendicular to the installation direction of the ink cartridge.

5. The ink cartridge according to claim 2, wherein: The ink cartridge includes an elastic member. When the movable member moves away from the path of the locking member, the elastic member is compressed, and when the ink cartridge is installed at a predetermined position, the elastic member drives the movable member to reset.

6. The ink cartridge according to claim 2, characterized in that: The movable member has a first abutting portion and a second abutting portion. When the ink cartridge is installed at a predetermined position, the movable member is in the locking position, and the first abutting portion is located on the relative front side of the locking member and positions the locking member. During the installation process of the ink cartridge, the locking member can abut against the second abutting portion to move the movable member away from the movement path of the locking member, and the movable member is in the avoidance position.

7. The ink cartridge according to claim 6, characterized in that: A guiding baffle is provided on the second abutting portion to prevent deviation when the locking member and the second abutting portion move relative to each other.

8. The ink cartridge according to claim 1, characterized in that: The guide groove structure includes a first guide groove, a second guide groove, and a third guide groove that communicate with each other. The first guide groove extends along the installation direction of the ink cartridge and is used to guide the locking member during the installation process of the ink cartridge so that the locking member can move to the locking position where it cooperates with the movable member. The second guide groove is located on the relative rear side of the first guide groove and is used to guide the locking member to continue to move along the installation direction of the ink cartridge and separate from the movable member. The third guide groove extends along the installation direction of the ink cartridge and is located beside the first guide groove and is used to guide the locking member when the ink cartridge moves in the opposite direction of the installation direction.

9. Ink cartridge, capable of being electrically connected to the electrical connection part of a print head, wherein a terminal block is provided on the electrical connection part; the ink cartridge includes a cartridge body and a chip provided on the cartridge body, and the chip is cooperatively connected to a terminal on the terminal block; characterized in that: A limiting portion corresponding to the chip is provided on the cartridge body, and the limiting portion is used to provide limiting and guiding for the terminal seat.

10. The ink cartridge according to claim 9, wherein: The limiting portion includes a first limiting plate, which is disposed opposite to the chip and is located on the relative two sides of the terminal seat after the ink cartridge is installed. The limiting portion further includes a second limiting plate, and a U-shaped groove is formed among the first limiting plate, the second limiting plate, and the chip.

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