Ink box

Abstract

The utility model discloses an ink box for supplying ink to ink-jet printing equipment. The ink box comprises a box body provided with an ink containing cavity and an ink outlet, the box body is further provided with a locking mechanism, and the locking mechanism comprises a joint part capable of moving between a locking position and an unlocking position. The ink box has the advantage that the ink box can be locked and unlocked without rotating a connecting component of the ink-jet printing equipment.

Description

[0001] The present utility model claims the priority of a prior application in China with an application date of March 27, 2023, an invention name of “Ink Cartridge” and an application number of CN202320623147.0. All contents of the prior application are fully cited in the present application. Technical Field

[0002] The utility model relates to the field of inkjet printing, and in particular to an ink cartridge for supplying ink to an inkjet printing device. Background Art

[0003] An inkjet printing device is a device that uses an ink cartridge containing ink to provide ink and sprays the ink onto a print medium such as paper for recording. The ink cartridge needs to be installed in the ink cartridge installation portion of the inkjet printing device. The ink outlet of the ink cartridge is fluidically connected to the print head in the inkjet printing device. Generally, the ink cartridge needs to be locked in the ink cartridge installation portion to stably supply ink to the print head.

[0004] Figure 1 The structure of a print head and ink cartridge installation part in an inkjet printing device is schematically shown. Figure 1 As shown, the inkjet printing device has four print heads 1 (or parts for sucking ink from the ink cartridge), each print head has an ink needle 2 for connecting to the ink outlet of the ink cartridge, and the ink cartridge mounting portion is provided with four latch structures 4 (for clarity, Figure 1 Only one is shown in the figure) to fix four ink cartridges correspondingly, wherein the latch structure 4 is arranged at the rear end of the rotatable connecting member 3 and protrudes upward, and the corresponding ink cartridge is provided with a locking track and an unlocking track of a relatively complex shape. When the ink cartridge is installed on the ink cartridge installation part, the latch structure 4 moves along the locking track while driving the connecting member 3 to rotate, so as to realize the locking of the ink cartridge by the latch structure 4. When the ink cartridge is taken out from the ink cartridge installation part, it is necessary to push the ink cartridge forward to release the locking of the ink cartridge by the latch structure 4, and then the latch structure 4 moves along the unlocking track and takes out the ink cartridge backward. This ink cartridge with a complex track requires the connecting member 3 to rotate flexibly to realize the locking and unlocking of the ink cartridge by the latch structure 4. When the connecting member 3 is not flexible in rotation or there is a problem with the matching of the latch structure and the track, the ink cartridge may not be installed in place, locked or taken out. Summary of the invention

[0005] In view of the problems existing in the prior art, the main purpose of the utility model is to provide an ink cartridge of an inkjet printing device, which can lock and unlock the ink cartridge without rotating the connecting member.

[0006] In order to achieve the above-mentioned main purpose, the utility model provides an ink cartridge for supplying ink to a print head of an inkjet printing device, the ink cartridge comprising a box body having an ink containing chamber and an ink outlet, wherein the ink outlet is arranged at one end of the box body, and a locking mechanism is also arranged on the box body, the locking mechanism comprising a locking member movable between a locking position and an unlocking position, a pressing portion protruding outside the box body, and an elastic member; by pressing the pressing portion, the elastic member generates an elastic force on one of the locking member or the pressing portion, so that the locking member can move in a vertical direction; the locking member comprises a coupling portion, and when in the locked position, the coupling portion abuts against the inkjet printing device.

[0007] It can be seen from the above scheme that by providing a joint portion that can move between a locked position and an unlocked position, the joint portion is located in the unlocked position during installation, and after the installation is completed, the joint portion is moved to the locked position to form a lock with the latch structure of the inkjet printing device. When the ink cartridge is taken out, the joint portion is moved to the unlocked position and the ink cartridge can be taken out, thereby enabling the connecting component of the inkjet printing device to achieve locking and unlocking of the ink cartridge without rotating.

[0008] Furthermore, the locking mechanism comprises a control rod capable of reciprocating under the action of elastic force, the control rod extends in a horizontal direction, and the pressing portion is arranged at an end of the control rod.

[0009] Furthermore, the box body further includes a limiting portion, and the control rod further includes an abutting portion matched with the limiting portion for limiting the movement space of the control rod.

[0010] Furthermore, the locking member can be rotatably arranged around a fixed axis on the box body, and the locking member can move between a locking position and an unlocking position by rotating.

[0011] Furthermore, the locking member is a unidirectionally rotating ratchet, and the box body is also provided with a pawl for controlling the rotation direction of the ratchet and a rack for driving the ratchet to rotate.

[0012] Furthermore, the locking member includes a track groove, which includes a highest point, a lowest point below the highest point, and a limit point between the highest point and the lowest point, and along the front-to-back direction, the highest point is located in front of the lowest point; the control rod includes a sliding column, which is movably arranged in the track groove, and when the sliding column moves to the highest point, the joint is in the locking position.

[0013] Furthermore, the pressing part has snap-fit ​​grooves that are evenly distributed and connected along the circumferential direction, wherein the depth of the snap-fit ​​grooves is greater than the depth of the snap-fit ​​grooves, the bottom surface of the snap-fit ​​grooves is inclined, and the top surface is also inclined at the same angle; the box body includes an abutment, the abutment has a first protrusion and a second protrusion that are different in height and connected, the top surface and the bottom surface of the first protrusion and the second protrusion are respectively inclined at the same angle to the snap-fit ​​groove of the pressing part, wherein the height of the first protrusion is greater than the height of the second protrusion; the control rod also includes a connecting rod, the pressing part can rotate relative to the connecting rod, and the elastic part is sleeved outside the connecting rod; the front end of the pressing part abuts against the abutment, and the rear end of the pressing part abuts against the pressing part to apply a backward elastic force to the control rod; the locking member is configured as a slider abutting against the control rod, and the engaging portion is configured below the slider.

[0014] Furthermore, a contact block is provided at the front end of the control rod, and the contact block has a contact surface inclined downward; and the sliding block has a contact surface inclined upward to contact with the contact surface of the control rod.

[0015] Furthermore, the elastic member is arranged on the fixing column of the box body, and is used to apply an upward elastic force to the locking member.

[0016] Further, the inkjet printer device comprises a latch structure, and when in the locked position, the engaging portion abuts against the latch structure.

[0017] In order to more clearly illustrate the above-mentioned objectives, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an ink cartridge installation portion of an existing inkjet printing device;

[0019] Figure 2 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0020] Figure 3 It is a structural schematic diagram of the locking mechanism in Embodiment 1 of the present utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the control rod in Embodiment 1 of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of the ratchet in Embodiment 1 of the present utility model;

[0023] Figure 6 It is a schematic diagram of the structure of the ratchet in Embodiment 1 of the present utility model;

[0024] Figure 7 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0025] Figure 8 This is a schematic diagram of the structure of Example 1 of the utility model after removing the cover;

[0026] Fig. 9 This is a schematic diagram of the structure of the embodiment 1 of the utility model when it is installed on the ink cartridge installation part;

[0027] Fig.10 This is a schematic diagram of the structure of the first embodiment of the utility model when it is taken out from the ink cartridge installation portion;

[0028] Fig.11 It is a structural schematic diagram of Embodiment 2 of the present utility model;

[0029] Fig.12 It is a structural schematic diagram of the locking mechanism in Embodiment 2 of the present utility model;

[0030] Fig.13 It is a schematic diagram of the structure of the control rod in Embodiment 2 of the present utility model;

[0031] Fig.14 It is a schematic diagram of the structure of the ratchet in Embodiment 2 of the present utility model;

[0032] Fig.15 It is a schematic diagram of the structure of the ratchet in Embodiment 2 of the present utility model;

[0033] Fig.16 It is a structural schematic diagram of Embodiment 2 of the present utility model;

[0034] Fig.17 It is a structural schematic diagram of the locking mechanism in the second embodiment of the utility model when it is in the unlocked state;

[0035] Fig.18 It is a structural schematic diagram of the locking mechanism in the second embodiment of the present utility model when it is in a locked state;

[0036] Fig.19 It is a structural schematic diagram of Embodiment 3 of the present utility model;

[0037] Fig. 20 It is a structural schematic diagram of the locking mechanism in Embodiment 3 of the present utility model;

[0038] Fig.21 It is a structural schematic diagram of the control rod in Embodiment 3 of the present utility model;

[0039] Fig. 22 It is a schematic diagram of the structure of the locking member in Embodiment 3 of the present utility model;

[0040] Fig.23 It is a structural schematic diagram of Embodiment 3 of the present utility model;

[0041] Fig.24It is a structural schematic diagram of the locking mechanism in the third embodiment of the present utility model when it is in the unlocked state;

[0042] Fig.25 It is a structural schematic diagram of the locking mechanism in the third embodiment of the present utility model when it is in a locked state;

[0043] Fig.26 It is a structural schematic diagram of Embodiment 4 of the present utility model;

[0044] Fig. 27 It is a structural schematic diagram of the locking mechanism in Embodiment 4 of the present utility model;

[0045] Fig.28 This is a schematic diagram of the structure of the box body after removing the cover and the locking mechanism of Example 4 of the utility model;

[0046] Fig.29 It is a structural schematic diagram of the control rod in Embodiment 4 of the utility model;

[0047] Fig.30 It is a schematic diagram of the structure of the locking member in Embodiment 4 of the present utility model;

[0048] Fig.31 This is a schematic diagram of the structure of Embodiment 4 of the utility model (the cover is not shown) when it is in a locked state;

[0049] Fig.32 It is a schematic structural diagram of Example 4 of the utility model (the cover is not shown) when it is in an unlocked state. DETAILED DESCRIPTION

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but it is easy for those skilled in the art to understand that the present invention can also be implemented in other ways different from those described herein. Therefore, other possible implementation methods that can be known by those skilled in the art based on the embodiments described in this application all belong to the protection scope of this application.

[0051] Example 1

[0052] like Figures 2 to 8 As shown, the ink cartridge 100 includes a box body 11 in a substantially rectangular parallelepiped shape and a locking mechanism 12. The box body 11 has an ink receiving portion 119 for receiving ink, and an ink outlet 118 for supplying ink from the ink receiving portion 119 to an inkjet printing device is disposed at a lower front end of the box body 11. The locking mechanism 12 is disposed at a lower position of the box body 11 to cooperate with a latch structure 4 of the inkjet printing device to lock and unlock the ink cartridge 100. The box body 11 can be fixed together by a shell with an opening on one side and a cover that closes the opening by welding or the like.

[0053] The locking mechanism 12 includes a control rod 13, a spring 14, a ratchet 15 and a pawl 16, wherein the control rod 13 is horizontally extended, and its rear end portion extends out of the box body 11 to form a pressing portion 131 that can be used for operation, and the abutment portion 132 cooperates with the limiting portion 113 provided on the box body 11 to limit the movement space of the control rod 13 so that the control rod 13 can only move horizontally within a certain range. A limiting portion 133 is also provided on the control rod 13, and the rear end of the spring 14 abuts against the limiting portion 133, and the front end of the spring 14 abuts against the spring abutment portion 111 of the box body 11, thereby applying a backward biasing force to the control rod 13, so that the abutment portion 132 abuts against the limiting portion 113 of the box body 11, and the control rod 13 is located in the initial position. A rack 134 that can mesh with the ratchet 15 is provided at the front end of the control rod 13, and the rack 134 is preferably configured to be elastically deformable; specifically, as Figure 3 The control rod 13 is provided with a hollow structure at the front end portion where the rack 134 is provided, which is conducive to the elastic deformation of the rack 134.

[0054] The ratchet 15 is rotatably disposed on the shaft 114 of the cartridge body 11, wherein the plate-shaped engaging portion 152 is disposed on one side of the ratchet portion 151 and protrudes outwardly in the radial direction of the ratchet 15. When the ratchet 15 rotates, the engaging portion 152 can move between a horizontal position (or a position not abutting against the latch structure 4) and a vertical position (or a position capable of abutting against the latch structure 4). When the engaging portion 152 is in the horizontal position (or a position not abutting against the latch structure 4), it cannot abut against the latch structure 4 of the inkjet printing device, thereby failing to fix the ink cartridge 100, i.e., at this time, the engaging portion 152 is in the unlocking position. When the engaging portion 152 is in the vertical position (or a position capable of abutting against the latch structure 4), its lower end can abut against the latch structure 4 of the inkjet printing device, thereby limiting the movement of the ink cartridge 100 in the direction opposite to the installation direction, i.e., at this time, the engaging portion 152 is in the locking position. The free end 161 of the pawl 16 abuts against the teeth of the ratchet 15 , and the fixed end 162 is connected to the fixed portion 115 of the box body 11 so that the pawl 16 is rotatably arranged on the box body 11 . The fixed portion 115 may have an axis or a hole that matches the hole or axis on the fixed end 162 .

[0055] When the embodiment of the utility model is installed on the inkjet printing device, the control rod 13 is in the initial position, at which time the engaging portion 152 is in a horizontal position (or a position that does not abut against the latch structure 4), and the installation of the ink cartridge 100 along the installation direction to the ink cartridge installation portion is not restricted. The pressing portion 131 of the control rod 13 is pressed to move the control rod 13 forward. When the movement of the ink cartridge 100 along the installation direction is basically in place, the rack 133 moving forward drives the ratchet 15 to rotate along direction A, and the engaging portion 152 is rotated to a vertical position (or a position that can abut against the latch structure 4) and abuts against the front side of the latch structure 4 to stop the rotation of the ratchet 15. Under the biasing force of the spring 14, the control rod 13 moves backward, and the rack 134 undergoes elastic deformation and slides along the teeth of the ratchet 15. At this time, the ratchet 15 does not rotate until the abutting portion 132 of the control rod 13 abuts against the limiting portion 113 on the box body 11 and returns to the initial position. Because the free end 161 of the pawl 16 abuts against the teeth of the ratchet 15, the ratchet 15 can be restricted from rotating in the direction opposite to the direction A, so that the ink cartridge 100 cannot be removed and is locked in the ink cartridge installation portion, as shown in FIG. Fig. 9 shown.

[0056] When it is necessary to remove the ink cartridge 100, the ink cartridge 100 is first pushed forward along the installation direction to disengage the engaging portion 152 from the front side of the latch structure 4, and at the same time, the pressing portion 131 is pushed forward, and the control rod 13 overcomes the biasing force of the spring 14 and moves forward (the control rod 13 moves toward the direction of the ratchet 15). Since the ink cartridge 100 moves forward as a whole relative to the latch structure 4, the rack 134 can drive the ratchet 15 to rotate along the direction A by meshing with the teeth of the ratchet 15, and the engaging portion 152 rotates to a horizontal unlocking position (i.e., a position where the engaging portion 152 does not abut against the latch structure 4). At this time, the ink cartridge 100 can be removed in the direction opposite to the installation direction, as shown in FIG. Fig.10 At this time, under the biasing force of the spring 14, the control rod 13 moves backward, the rack 134 undergoes elastic deformation and slides along the teeth of the ratchet 15 until the abutting portion 132 of the control rod 13 abuts against the limiting portion 113 on the box body 11 and returns to the initial position.

[0057] Example 2

[0058] like Figures 11 to 16 As shown, the ink cartridge 200 includes a substantially rectangular parallelepiped box body 21 and a locking mechanism 22. The box body 21 has an ink container for containing ink, and an ink outlet 218 for supplying ink from the ink container to the inkjet printing device is disposed at a lower front end of the box body 21. The locking mechanism 22 is disposed at a lower position of the box body 21 to cooperate with a latch structure 4 of the inkjet printing device to lock and unlock the ink cartridge 200.

[0059] The locking mechanism 22 includes a control rod 23, a spring 24, a ratchet 25 and a pawl 26, wherein the control rod 23 is horizontally extended, and its front end part extends out of the box body 21 to form a pressing part 231, and the rear end has a limiting part 232 that abuts against the spring 24, and has a downwardly bent part to form an abutting part 233 that cooperates with the limiting part 212 set on the box body 21, which is used to limit the movement space of the control rod 23, so that the control rod 23 can only move horizontally within a certain range. The front end of the spring 24 abuts against the limiting part 232, and the rear end of the spring 24 abuts against the spring abutting part 211 of the box body 21, thereby applying a forward biasing force to the control rod 23, so that the abutting part 233 abuts against the limiting part 212 of the box body 21, and the control rod 23 is located in the initial position. A rack 234 that can be meshed with the ratchet 25 is set on the downwardly bent part of the rear end of the control rod 23, and the rack 234 is preferably set to be elastically deformable.

[0060] The ratchet 25 is rotatably disposed on the box body 21, wherein the plate-shaped engaging portion 252 is disposed on one side of the ratchet portion 251 and protrudes outwardly along the radial direction of the ratchet 25. When the ratchet 25 rotates, the engaging portion 252 can move between a horizontal position (or a position not abutting against the latch structure 4) and a vertical position (or a position capable of abutting against the latch structure 4). When the engaging portion 252 is in the horizontal position (or a position not abutting against the latch structure 4), it cannot abut against the latch structure 4 of the inkjet printing device, thereby failing to fix the ink cartridge 200, i.e., at this time, the engaging portion 252 is in the unlocking position. When the engaging portion 252 is in the vertical position (or a position capable of abutting against the latch structure 4), its lower end can abut against the latch structure 4 of the inkjet printing device, thereby limiting the movement of the ink cartridge 200 in the direction opposite to the installation direction, i.e., at this time, the engaging portion 252 is in the locking position. The free end 261 of the pawl 26 abuts against the teeth of the ratchet 25 , and the fixed end 262 enables the pawl 26 to be rotatably disposed on the box body 21 . The box body 21 may have a shaft or a hole that matches the hole or shaft on the fixed end 262 .

[0061] When the embodiment of the utility model is installed in the inkjet printing device, the control rod 23 is in the initial position, the engaging portion 252 is in the horizontal position (or the position not in contact with the latch structure 4), the installation of the ink cartridge 200 along the installation direction to the ink cartridge installation portion is not restricted, the pressing portion 231 is in contact with the inner wall of the ink cartridge installation portion of the inkjet printing device, and the control rod 23 moves backward relative to the cartridge body 21, and the rack 233 moving backward drives the ratchet 25 to rotate along the direction A. When the movement of the ink cartridge 200 along the installation direction is basically in place, the engaging portion 252 is rotated to the vertical position and abuts against the front side of the latch structure 4, and the rotation of the ratchet 25 stops. Because the free end 261 of the pawl 26 abuts against the teeth of the ratchet 25, the ratchet 25 can be restricted from rotating in the direction opposite to the direction A, so that the ink cartridge 200 cannot be taken out and is locked in the ink cartridge installation portion. At this time, the locking mechanism 22 is as follows. Fig.17 At this time, under the biasing force of the spring 24, the control rod 23 moves forward, the rack 234 elastically deforms and slides along the teeth of the ratchet 25, and the ratchet 25 does not rotate until the abutting portion 233 of the control rod 23 abuts against the limiting portion 212 on the box body 21 and returns to the initial position.

[0062] When the ink cartridge 200 needs to be removed, the ink cartridge 200 is first pushed forward along the installation direction to disengage the engaging portion 252 from the latch structure 4. The pressing portion 231 cannot move due to abutment with the inner wall of the ink cartridge installation portion, so that the control rod 23 overcomes the biasing force of the spring 24 and moves backward relative to the cartridge body 21 (the control rod 23 moves toward the direction of the ratchet 25). Since the ink cartridge 200 as a whole moves forward relative to the latch structure 4, the rack 234 meshes with the teeth of the ratchet 25, driving the ratchet 25 to rotate along the direction A, and the engaging portion 252 rotates to a horizontal unlocking position (i.e., a position where the engaging portion 252 does not abut against the latch structure 4). Fig.18 As shown, the ink cartridge 200 can be taken out in the direction opposite to the installation direction. Then, under the biasing force of the spring 24, the control rod 23 moves forward, the rack 234 elastically deforms and slides along the teeth of the ratchet 25 until the abutting portion 233 of the control rod 23 abuts against the limiting portion 212 on the box body 21 and returns to the initial position.

[0063] Example 3

[0064] like Figures 19 to 23 As shown, the ink cartridge 300 includes a substantially rectangular parallelepiped box body 31 and a locking mechanism 32. The box body 31 has an ink container for containing ink, and an ink outlet 318 for supplying ink from the ink container to the inkjet printing device is disposed at a lower front end of the box body 31. The locking mechanism 32 is disposed at a lower position of the box body 31 to cooperate with a latch structure 4 of the inkjet printing device to lock and unlock the ink cartridge 300.

[0065] The locking mechanism 32 includes a control rod 33, a spring 34 and a locking member 35, wherein the control rod 33 is arranged horizontally, and its front end part extends out of the box body 31 to form a pressing part 331, and the rear end has a limiting part 332 abutting against the spring 34, and has a downwardly bent part to form an abutting part 333 to cooperate with the limiting part 312 set on the box body 31, which is used to limit the movement space of the control rod 33, so that the control rod 33 can only move horizontally within a certain range, and a sliding column 334 protruding to one side is also formed on the downwardly bent part. The front end of the spring 34 abuts against the limiting part 332, and the rear end of the spring 34 abuts against the spring abutting part 311 of the box body 31, thereby applying a forward biasing force to the control rod 33, and the abutting part 333 abuts against the limiting part 312 of the box body, so that the control rod 33 is located in the initial position.

[0066] The locking member 35 is arranged on the box body 31 so as to be movable up and down. A track groove 354 is arranged on the engaging surface 351 thereof facing the control rod 33. The sliding column 334 can slide in the track groove 354. The lower end of the locking member 35 is provided with an engaging portion 352 for engaging with the latch structure 4. Both the front and rear ends of the locking member 35 are provided with protrusions 353 to cooperate with the slide groove on the box body 31 so that the locking member 35 can move in the vertical direction; optionally, the locking member 35 can also move in the vertical direction by pivoting. The track groove 354 is a closed ring with an irregular shape and has a highest point 3541 located at the front upper part thereof and a lowest point 3542 located at the rear lower part thereof. A limit point 3543 is also arranged at the upper position of the lowest point. In other embodiments, the track groove may also be open. The sliding column 334 of the control rod 33 cooperates with the track groove 354 of the locking member 35 to form a connection structure, so that the horizontal displacement of the control rod 33 drives the vertical displacement of the locking member 35 .

[0067] When the embodiment of the utility model is installed on the inkjet printing device, the control rod 33 abuts against the inner wall of the ink cartridge installation part, and the ink cartridge 300 continues to be pushed forward. The ink cartridge installation part presses the pressing part 331 of the control rod 33, so that the control rod 33 moves backward relative to the box body 31 (towards the direction of the locking member 35), and the sliding column 334 of the control rod 33 moves from the limit point 3543 to the lowest point 3542 along the track groove 354 relative to the locking member 35, and the locking member 35 moves upward for a certain distance. Then, the control rod 33 moves forward relative to the locking member 35 under the push of the spring 34, and the sliding column 334 moves to the highest point 3541 of the track groove 354, and the locking member 35 is pushed downward. The engaging portion 352 abuts against the latch structure 4 and is in a locked position. Fig.24 As shown, the ink cartridge 300 cannot be removed and is locked in the ink cartridge installation portion.

[0068] When the ink cartridge 300 needs to be removed, the ink cartridge 300 is first pushed forward along the installation direction, the control rod 33 abuts against the inner wall of the ink cartridge installation portion and moves backward relative to the cartridge body 31, and the sliding column 334 of the control rod moves backward along the track groove 354 from its highest point 3541 to the limit point 3543 relative to the locking member 35, and the locking member 35 is pushed to move upward, and the engaging portion 352 is disengaged from the latch structure 4 and is in the unlocked position, as shown in FIG. Fig.25 As shown, the ink cartridge 300 can be removed from the ink cartridge installation portion.

[0069] Example 4

[0070] like Figures 26 to 30 As shown, the ink cartridge 400 includes a substantially rectangular parallelepiped box body 41 and a locking mechanism 42. The box body 41 has an ink receiving portion 419 for receiving ink, and an ink outlet 418 for supplying ink from the ink receiving portion 419 to the inkjet printing device is disposed at a lower front end of the box body 41. The locking mechanism 42 is disposed at a lower position of the box body 41 to cooperate with a latch structure 4 of the inkjet printing device to lock and unlock the ink cartridge 400.

[0071] The locking mechanism 42 includes a control rod 43, a spring 44, a locking member 45 and a torsion spring 46, wherein the control rod 43 is horizontally extended, and its rear end part extends out of the box body 41 to form a pressing portion 431, wherein the pressing portion 431 can rotate relative to the connecting rod 432, and the spring 44 is sleeved outside the connecting rod 432, and the front end abuts against the abutment member set in the box body 41, and the rear end abuts against the pressing portion 431 to apply a backward biasing force to the control rod 43. The front end of the control rod 43 is provided with an abutment block 433, and the abutment block 433 has an abutment surface 4331 inclined downward. The pressing portion 431 has circumferentially uniformly distributed and connected clamping grooves 4311 and 4312, wherein the depth of the clamping groove 4311 is greater than the depth of the clamping groove 4312, and the bottom surfaces of the clamping grooves 4311 and 4312 are inclined, and the top surfaces are also inclined at the same angle. The box body 41 is provided with an abutment member 411 which cooperates with the pressing portion 431. The abutment member has protrusions 4111 and 4112 of different heights and connected to each other. The top and bottom surfaces of the protrusions 4111 and 4112 are inclined at the same angle as the snap-in grooves 4311 and 4312 of the pressing portion 431, wherein the height of the protrusion 4111 is greater than the height of the protrusion 4112.

[0072] The locking member 45 has a slider 451 that abuts against the control rod 43, and a joint portion 452 is provided below the slider 451. The protrusions 453 on both sides of the joint portion 452 are located in the guide grooves 414 provided on the box body 41, and are used to guide the locking member 45 to move up and down. The slider 451 has an upwardly inclined abutting surface 4511 that abuts against the abutting surface 4331 of the control rod 43. The torsion spring 46 is provided on the fixed column 413 of the box body 41, and is used to apply an upward biasing force to the locking member 45. The abutting block 433 of the control rod 43 cooperates with the slider 451 of the locking member 45 to form a connection structure, so that the horizontal displacement of the control rod 43 drives the vertical displacement of the locking member 45.

[0073] When the embodiment of the utility model is installed on the inkjet printing device, after the ink cartridge 400 is installed on the ink cartridge installation part, the pressing part 431 is pressed, and the protrusions 4111 and 4112 of the abutting piece 411 of the box body 41 are disengaged from the clamping grooves 4311 and 4312 respectively, and the pressing part 431 rotates until the side wall of the protrusion 4111 of the abutting piece 411 abuts against the side wall of the clamping groove 4312, and the pressing part 431 no longer rotates, and the protrusion 4111 cooperates with the clamping groove 4312, and the control rod 43 is pushed forward, and the sliding block 451 abutting against the abutting block 433 cannot move forward, so that its abutting surface 4511 slides relative to the abutting surface 4331 of the abutting block 433, thereby pushing the locking member 45 to move downward, and the engaging portion 452 abuts against the front side surface of the latch structure 4 and is in a locked position, as shown in FIG. Fig.31 As shown, the ink cartridge 400 cannot be removed and is locked in the ink cartridge installation portion.

[0074] When it is necessary to take out the ink cartridge 400, the pressing portion 431 is pressed. After the protrusion 4111 of the abutting member 411 is disengaged from the engaging groove 4312 of the pressing portion 431, the pressing portion 431 rotates, and the control rod 43 moves backward under the biasing force of the spring 44. The protrusions 4111 and 4112 of the abutting member 411 of the box body 41 are respectively engaged with the engaging grooves 4311 and 4312 of the pressing portion 431. The abutting block 433 of the control rod 43 moves backward, and the locking member 45 moves upward under the biasing force of the torsion spring 46. The abutting surface 4511 of the slider 451 slides along the abutting surface 4331 of the abutting block 433, and the engaging portion 452 is disengaged from the latch structure 4 and is in the unlocked position. Fig.32 As shown, the ink cartridge 400 can be removed from the ink cartridge installation portion.

[0075] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the scope of the present invention. Any person skilled in the art can make some improvements without departing from the scope of the present invention, that is, any changes or improvements made according to the present invention should be covered by the protection scope of the present invention.

Claims

1. An ink cartridge for supplying ink to a print head of an inkjet printing device, the ink cartridge comprising a cartridge body having an ink containing chamber and an ink outlet, wherein the ink outlet is arranged at one end of the cartridge body, characterized in that: A locking mechanism is also provided on the box body, and the locking mechanism includes a locking piece movable between a locking position and an unlocking position, a pressing portion protruding outside the box body, and an elastic piece; by pressing the pressing portion, the elastic piece generates an elastic force on one of the locking piece or the pressing portion, so that the locking piece can move in a vertical direction; the locking piece includes a coupling portion, and when in the locking position, the coupling portion abuts against the inkjet printer device.

2. The ink cartridge according to claim 1, characterized in that: The locking mechanism comprises a control rod capable of reciprocating under the action of elastic force, the control rod extends in a horizontal direction, and the pressing portion is arranged at an end of the control rod.

3. The ink cartridge according to claim 2, characterized in that: The box body further includes a limiting portion, and the control rod further includes an abutting portion matched with the limiting portion and used for limiting the movement space of the control rod.

4. The ink cartridge according to claim 1, characterized in that: The locking member can be rotatably arranged around a fixed axis on the box body, and the locking member can move between a locking position and an unlocking position by rotating.

5. The ink cartridge according to claim 1, characterized in that: The locking member is a unidirectionally rotating ratchet, and the box body is also provided with a pawl for controlling the rotation direction of the ratchet and a rack for driving the ratchet to rotate.

6. The ink cartridge according to claim 2, characterized in that: The locking member includes a track groove, which includes a highest point, a lowest point below the highest point, and a limit point between the highest point and the lowest point, and along the front-to-back direction, the highest point is located in front of the lowest point; the control rod includes a sliding column, which is movably arranged in the track groove, and when the sliding column moves to the highest point, the engaging portion is located in the locking position.

7. The ink cartridge according to claim 3, characterized in that: The pressing portion has clamping grooves that are evenly distributed and connected along the circumferential direction, wherein the depth of the clamping grooves is greater than the depth of the clamping grooves, the bottom surface of the clamping grooves is inclined, and the top surface is also inclined at the same angle; The box body includes an abutment member, the abutment member has a first protrusion and a second protrusion of different heights and connected, the top surface and the bottom surface of the first protrusion and the second protrusion are respectively inclined at the same angle with the clamping groove of the pressing portion, wherein the height of the first protrusion is greater than the height of the second protrusion; The control rod also includes a connecting rod, the pressing part can rotate relative to the connecting rod, and the elastic member is sleeved outside the connecting rod; the front end of the pressing part abuts against the abutting part, and the rear end of the pressing part abuts against the pressing part to apply a backward elastic force to the control rod; The locking member is configured as a slider abutting against the control rod, and the engaging portion is configured below the slider.

8. The ink cartridge according to claim 7, characterized in that: The front end of the control rod is provided with an abutment block, which has an abutment surface inclined downward; the sliding block has an abutment surface inclined upward and abuts against the abutment surface of the control rod.

9. The ink cartridge according to claim 7, characterized in that: The elastic member is arranged on the fixing column of the box body and is used for applying an upward elastic force to the locking member.

10. The ink cartridge according to any one of claims 1 to 9, characterized in that: The inkjet printer device includes a latch structure, and the engaging portion abuts the latch structure when in the locked position.

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