Powder barrel and image forming device

Abstract

The utility model provides a powder cylinder and an image forming device, the powder cylinder comprises a powder cylinder body, a driving joint, a driven joint and a locking assembly, the powder cylinder body comprises a shell and a stirring frame arranged in the shell; the first end of the driven connector is connected to the stirring frame, and the second end of the driven connector is used for being in threaded connection with the driving connector, so that the driven connector and the driving connector synchronously rotate in the first direction; the locking assembly is arranged on the shell, abuts against the driven connector in the radial direction of the driven connector and is matched with the driven connector. The locking assembly is configured to prevent the driven connector from rotating when the driving connector rotates in the direction opposite to the first direction and enable the driven connector to be separated from the driving connector under the rotation effect of the driving connector. The device is used for preventing the powder cylinder from being recycled and reused after being filled with powder.

Description

Technical Field

[0001] The utility model relates to the technical field of printing, in particular to a powder cartridge and an image forming device. Background Art

[0002] In image forming devices such as printers and copiers, a toner cartridge for supplying developer (such as toner) can be detachably installed inside. The developer is continuously consumed during the printing process, which makes the toner cartridge one of the consumable parts of the image forming device.

[0003] Since the toner cartridge is the key to ensuring the image quality of the printer, many compatible manufacturers will recycle the original toner cartridge for refilling, or users can directly purchase toner for refilling, which will seriously affect the image quality and even damage the machine.

[0004] Therefore, there is an urgent need to improve the structure of the powder cartridge to prevent the powder cartridge from being recycled and to prevent the powder cartridge from being reused after being filled with powder. Utility Model Content

[0005] The utility model provides a powder cartridge and an image forming device, which are used to prevent the powder cartridge from being recycled and to reuse the cartridge after being filled with powder.

[0006] In order to achieve the above object, the utility model provides a powder cartridge, comprising:

[0007] A powder cartridge body, the powder cartridge body comprising a shell and a stirring frame arranged in the shell;

[0008] An active joint, the active joint being rotatably disposed on an outer wall of the housing, and the active joint being used to be connected to a driving member of an image forming device;

[0009] A driven joint, wherein a first end of the driven joint is connected to the stirring frame, and a second end of the driven joint is used for threaded connection with the active joint, so that the driven joint and the active joint rotate synchronously along a first direction;

[0010] A locking assembly, wherein the locking assembly is disposed on the housing, and the locking assembly abuts against the driven joint along the radial direction of the driven joint and cooperates with the driven joint;

[0011] The locking assembly is configured to prevent the driven joint from rotating when the active joint rotates in the direction opposite to the first direction, and to allow the driven joint to be separated from the active joint under the rotation of the active joint.

[0012] The utility model provides a powder cartridge, in which, during normal use, the driven joint and the active joint rotate synchronously along a first direction, thereby driving a stirring frame to stir the carbon powder; after the carbon powder is consumed, the active joint rotates in the opposite direction to the first direction, and the locking assembly abuts against the driven joint along the radial direction of the driven joint, thereby preventing the driven joint from rotating, and under the action of the threaded connection between the driven joint and the active joint, the driven joint is separated from the active joint, so that the stirring frame cannot realize the stirring function. Therefore, the powder cartridge provided by the utility model cannot work normally after being recycled or refilled with powder, thereby avoiding affecting the image quality and damaging the image forming device.

[0013] In one possible implementation, the outer wall of the driven joint is provided with a step surface, and the step surface is arranged along the axial direction of the driven joint. When the active joint rotates in the opposite direction to the first direction, the locking assembly abuts against the step surface.

[0014] In a possible implementation, the outer wall of the driven joint is further provided with a groove, the groove penetrates the driven joint along the axial direction of the driven joint, one side wall of the groove is the step surface, and the other side wall of the groove has a transition slope;

[0015] The transition slope is configured such that when the active joint rotates along the first direction, the locking assembly leaves the groove along the transition slope.

[0016] In a possible implementation, a first baffle and a second baffle are disposed on an inner wall of the housing at intervals, and a first guide hole is disposed in the first baffle;

[0017] The locking assembly includes a first latch and a first elastic member, the first latch is inserted into the first guide hole, one end of the first latch abuts against the outer wall of the driven joint, the other end of the first latch is connected to the first elastic member, and the end of the first elastic member away from the first latch abuts against the second baffle.

[0018] In a possible implementation, a second baffle is provided on the inner wall of the housing, and a second guide hole is provided in the second baffle;

[0019] The locking assembly includes a second latch and a second elastic member, the second latch is inserted into the second guide hole, the outer wall of the second latch is provided with a stop bulge, the stop bulge is located between the second baffle plate and the driven joint, the second elastic member is sleeved on the outer peripheral surface of the second latch, and the two ends of the second elastic member are respectively abutted against the stop bulge and the second baffle plate.

[0020] In one possible implementation, the inner wall of the first end of the driven joint has a clamping portion for connecting to the stirring frame, and the second end of the driven joint has a threaded sleeve, which is used to be sleeved inside the active joint or on the outer circumference of the active joint and screwed together with the active joint thread.

[0021] In a possible implementation, the stirring frame includes a rotating shaft and a stirring blade connected to the outer circumferential surface of the rotating shaft, the first end of the rotating shaft is connected to the driven joint, the inner wall of the shell has a first inner wall surface opposite to the driven joint, and the second end of the rotating shaft is rotatably disposed in the first inner wall surface;

[0022] Along the axial direction of the rotating shaft, the distance between the end of the stirring blade away from the driven joint and the first inner wall surface is L1, and the length of the driven joint screwed to the active joint is L2, wherein L1>L2.

[0023] In a possible implementation, the active joint includes a driving connection portion and a threaded sleeve that are connected to each other, and an inner wall of the threaded sleeve or an outer wall of the threaded sleeve is provided with a thread for threaded connection with the driven joint.

[0024] In a possible implementation, the active joint further includes a limiting ridge, the limiting ridge is located at a connection position between the driving connection portion and the threaded sleeve, and the limiting ridge abuts against an outer wall of the shell.

[0025] The utility model also provides an image forming device, comprising the above-mentioned powder cartridge;

[0026] The image forming device further comprises a driving member, and the driving member is used to connect to the active joint of the powder cartridge.

[0027] The utility model can control the motor to reverse after the carbon powder stored in the powder cartridge is consumed, so that the driven joint is separated from the driving joint, and the driven joint and one end of the stirring frame fall off, so that the powder cartridge is scrapped. The scrapped powder cartridge cannot perform normal powder stirring action, thereby preventing the powder cartridge from being recycled or refilled with powder for use, and preventing inferior carbon powder from affecting the image quality and damaging the image forming device.

[0028] According to the utility model, after the driven joint and the stirring frame fall off, they will fall into the powder cartridge body, resulting in the powder cartridge being unable to be restored after being scrapped, thus preventing some compatible manufacturers from recycling the powder cartridge provided by the application for reuse.

[0029] In addition to the technical problems solved by the embodiments of the utility model described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a powder cartridge and an image forming device provided by the embodiments of the utility model, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 A schematic diagram of the three-dimensional structure of a powder cartridge provided in an embodiment of the utility model;

[0032] Figure 2 A cross-sectional view of a powder cartridge provided in an embodiment of the utility model;

[0033] Figure 3 Another cross-sectional view of the powder cartridge provided by the embodiment of the utility model;

[0034] Figure 4 for Figure 3 A magnified view of the structure at A;

[0035] Figure 5 A schematic structural diagram of a state in which a driven joint and a driving joint of a powder cartridge provided by an embodiment of the utility model rotate along a first direction;

[0036] Figure 6 A schematic diagram of another state structure of the driven joint and the active joint of the powder cartridge provided by the embodiment of the utility model rotating along the first direction;

[0037] Figure 7 A schematic structural diagram of a state in which a driven joint and a driving joint of a powder cartridge provided by an embodiment of the utility model rotate in the opposite direction to a first direction;

[0038] Figure 8 A schematic diagram of another state structure of the driven joint and the active joint of the powder cartridge provided by the embodiment of the utility model rotating in the opposite direction to the first direction;

[0039] Fig. 9 A schematic diagram of the structure of the connection between the driven joint and the active joint of the powder cartridge provided in an embodiment of the utility model;

[0040] Fig.10A cross-sectional view of the connection between the driven joint and the active joint of the powder cartridge provided by the embodiment of the utility model;

[0041] Fig.11 A schematic diagram of the three-dimensional structure of the active joint of the powder cartridge provided in an embodiment of the utility model;

[0042] Fig.12 A schematic diagram of the three-dimensional structure of a driven joint of a powder cartridge provided in an embodiment of the utility model;

[0043] Fig.13 This is a schematic diagram of the three-dimensional structure of the powder cartridge and the driving member provided in an embodiment of the utility model.

[0044] Description of reference numerals:

[0045] 10-powder cartridge body;

[0046] 11- housing;

[0047] 111- first baffle;

[0048] 112- second baffle;

[0049] 113-first guide hole;

[0050] 114-first inner wall surface;

[0051] 12- stirring rack;

[0052] 121-rotation axis;

[0053] 122- stirring blade;

[0054] 20-driven connector;

[0055] 21-threaded sleeve;

[0056] 22- step surface;

[0057] 23- groove;

[0058] 231-transition slope;

[0059] 24-clip portion;

[0060] 30-locking assembly;

[0061] 31-first latch;

[0062] 32-first elastic member;

[0063] 40-active connector;

[0064] 41- limiting ridge;

[0065] 42- driving connection part;

[0066] 43-screw sleeve;

[0067] 50-driving member. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0069] The toner cartridge is a core component of printing and copying equipment, used to store and transport toner. When in use, the drive device of the image forming device drives the toner cartridge to rotate to supply powder. A stirring rack is provided inside the toner cartridge, and the stirring member is used to stir the toner and deliver the powder to the powder outlet of the toner cartridge. During use, the stirring rack rotates inside the toner cartridge, stirring the toner while ensuring uninterrupted powder supply.

[0070] However, after the toner stored in the toner cartridge is consumed, it is easy to be refilled with inferior toner for reuse, which will not only seriously affect the image quality, but also damage the image forming device.

[0071] In view of this, the powder cartridge and image forming device provided by the utility model can control the motor to reverse after the carbon powder stored in the powder cartridge is consumed, so that the driven joint 20 is separated from the active joint 40, the driven joint 20 and one end of the stirring frame 12 fall off, and the stirring frame 12 cannot work, thereby scrapping the powder cartridge. The scrapped powder cartridge cannot perform normal powder stirring action, thereby preventing the powder cartridge from being recycled or refilled with powder for use, and preventing inferior carbon powder from affecting the image quality and damaging the image forming device.

[0072] The toner cartridge and the image forming device provided by the embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0073] refer to Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a powder cartridge, comprising: a powder cartridge body 10, an active joint 40, a driven joint 20 and a locking assembly 30, wherein the powder cartridge body 10 comprises a shell 11 and a stirring frame 12 arranged in the shell 11; the active joint 40 is rotatably arranged on the outer wall of the shell 11, and the active joint 40 is used to connect with a driving member 50 of an image forming device;

[0074] refer to Figure 2 , Figure 3 and Figure 4As shown, the first end of the driven joint 20 is connected to the stirring frame 12, and the second end of the driven joint 20 is used to be threadedly connected to the active joint 40, so that the driven joint 20 and the active joint 40 rotate synchronously along the first direction;

[0075] The locking assembly 30 is disposed on the housing 11, and the locking assembly 30 abuts against the driven joint 20 along the radial direction of the driven joint 20 and cooperates with the driven joint 20; the locking assembly 30 is configured to prevent the driven joint 20 from rotating when the active joint 40 rotates in the opposite direction to the first direction, and allows the driven joint 20 to disengage from the active joint 40 under the rotation of the active joint 40.

[0076] The utility model provides a powder cartridge. In normal use, the driven joint 20 and the active joint 40 rotate synchronously along a first direction, thereby driving the stirring frame 12 to stir the carbon powder. After the carbon powder is consumed, the active joint 40 rotates in the opposite direction to the first direction, and the locking assembly 30 abuts against the driven joint 20 along the radial direction of the driven joint 20, thereby preventing the driven joint 20 from rotating. Under the action of the threaded connection between the driven joint 20 and the active joint 40, the driven joint 20 is separated from the active joint 40, so that the stirring frame 12 cannot perform the stirring function. Therefore, the powder cartridge provided by the utility model cannot work normally after being recycled or refilled with powder, thereby avoiding affecting the image quality and damaging the image forming device.

[0077] refer to Figure 5 and Figure 6 As shown, the direction indicated by arrow X is the first direction, referring to Figure 7 and Figure 8 As shown, the direction indicated by arrow -X is opposite to the first direction.

[0078] refer to Figure 2 , Figure 5 and Figure 6 As shown, when the active joint 40 rotates in the first direction, the locking assembly 30 will not prevent the driven joint 20 from rotating, so the driven joint 20 and the active joint 40 can rotate synchronously, ensuring that the driven joint 20 can stir the carbon powder with the stirring frame 12.

[0079] refer to Figure 7 and Figure 8 As shown, the outer wall of the driven joint 20 is provided with a step surface 22, and the step surface 22 is arranged along the axial direction of the driven joint 20. When the active joint 40 rotates in the opposite direction to the first direction, the locking assembly 30 abuts against the step surface 22, so that the locking assembly 30 has an obstructive effect on the rotation of the driven joint 20.

[0080] Since the step surface 22 is arranged along the axial direction of the driven joint 20, the locking assembly 30 always remains in contact with the step surface 22 during the process in which the driven joint 20 no longer rotates synchronously with the active joint 40 until the driven joint 20 is separated from the active joint 40, thereby ensuring the stability of the cooperation between the locking assembly 30 and the driven joint 20.

[0081] refer to Figure 2 and Fig.12 As shown, the step surface 22 is a vertical surface, and the outer diameter of the driven joint 20 changes suddenly at the position of the step surface 22, so that when the active joint 40 rotates in the opposite direction to the first direction, the locking assembly 30 cannot pass over the step surface 22 from the bottom of the step surface 22, thereby keeping the locking assembly 30 stable and preventing the driven joint 20 from rotating in the opposite direction to the first direction.

[0082] In this example, along the axial direction of the driven joint 20 , the projection of the driven joint 20 may be a spiral line.

[0083] In one possible implementation, reference Figure 2 , Fig. 9 and Fig.12 As shown, the outer wall of the driven joint 20 is also provided with a groove 23, and the groove 23 penetrates the driven joint 20 along the axial direction of the driven joint 20, one side wall of the groove 23 is a step surface 22, and the other side wall of the groove 23 has a transition slope 231; the transition slope 231 is configured so that when the active joint 40 rotates along the first direction, the locking assembly 30 leaves the groove 23 along the transition slope 231.

[0084] In this example, along the axial direction of the driven joint 20 , the projection of the driven joint 20 may be a circle with a notch, and the notch is the projection of the groove 23 .

[0085] Along the first direction, the transition slope 231 gradually extends out of the groove 23 from the groove bottom surface of the groove 23 and transitions to the outer diameter surface of the driven joint 20 for connection.

[0086] refer to Figure 2 , Figure 5 and Figure 6As shown, during the rotation of the active joint 40 along the first direction, i.e., the X direction, the active joint 40 drives the driven joint 20 to rotate through the screw thread engagement with the driven joint 20, and the driven joint 20 drives the stirring frame 12 to rotate along the first direction. Since the groove 23 is a structure that is recessed into the driven joint 20, during the rotation of the driven joint 20 along the first direction, when the locking assembly 30 encounters the groove 23, it will jump from the top of the step surface 22 into the groove 23, and then leave the groove 23 along the transition slope 231, so that the groove 23 and the step surface 22 will not hinder the rotation of the driven joint 20 along the first direction, thereby ensuring that the driven joint 20 and the active joint 40 rotate synchronously along the first direction.

[0087] refer to Figure 2 , Figure 7 and Figure 8 As shown, during the rotation of the active joint 40 in the opposite direction to the first direction, i.e., the -X direction, the locking assembly 30 can easily enter the groove 23 along the transition slope 231. After the locking assembly 30 enters the groove 23, it will maintain contact with the bottom wall surface and the step surface 22 of the groove 23. The locking assembly 30 cannot go over the step surface 22, thereby preventing the driven joint 20 from rotating in the opposite direction to the first direction. However, the active joint 40 always keeps rotating in the opposite direction to the first direction, so that the threaded connection position between the driven joint 20 and the active joint 40 is loosened, thereby achieving the effect of the driven joint 20 being separated from the active joint 40.

[0088] In one possible implementation, reference Figure 6 As shown, the inner wall of the shell 11 is spaced apart from each other with a first baffle 111 and a second baffle 112, and a first guide hole 113 is provided in the first baffle 111; the locking assembly 30 includes a first latch 31 and a first elastic member 32, the first latch 31 is passed through the first guide hole 113, one end of the first latch 31 abuts against the outer wall of the driven joint 20, the other end of the first latch 31 is connected to the first elastic member 32, and the end of the first elastic member 32 away from the first latch 31 abuts against the second baffle 112.

[0089] In one possible implementation, the first elastic member 32 may be a spring. Of course, the first elastic member 32 may also be an elastic sleeve. Under the elastic force of the first elastic member 32 itself, one end of the first pin 31 remains in contact with the outer wall of the driven joint 20 .

[0090] In one possible implementation, the first baffle 111 , the second baffle 112 and the shell 11 may be an integral structure formed in one piece, which not only improves the structural strength of the first baffle 111 , the second baffle 112 , but also eliminates the need to install the first baffle 111 , the second baffle 112 .

[0091] The shape of the cross section of the first guide hole 113 is consistent with the shape of the cross section of the first pin 31. For example, the first guide hole 113 is a circular hole, and the first pin 31 is a cylinder. The first guide hole 113 guides the radial movement of the first pin 31 along the driven joint 20, thereby preventing the first pin 31 from deflecting.

[0092] One end of the first latch 31 abuts against the outer wall of the driven joint 20, and the other end of the first latch 31 is connected to the first elastic member 32. The bottom end of the first latch 31 abuts against the outer wall of the driven joint 20, and the top end of the first latch 31 is connected to the first elastic member 32. In order to allow the first latch 31 to smoothly leave the groove 23 along the transition slope 231, the end of the bottom end of the first latch 31 facing the transition slope 231 may be a slope or an arc surface.

[0093] In one possible implementation, reference Figure 6 As shown, the outer peripheral surface of the first latch 31 has a flange 311, and the flange 311 can be inserted into the first elastic member 32. For example, when the first elastic member 32 is a spring, the flange 311 is inserted between two adjacent circles of the spring, thereby realizing the mutual connection between the first latch 31 and the first elastic member 32.

[0094] In other possible implementations, the top end of the first latch 31 may also be connected to the end surface of the first elastic member 32 by welding, thereby improving the stability of the connection between the first latch 31 and the first elastic member 32 .

[0095] The first elastic member 32 is always kept in a compressed state. Figure 6 As shown, under the elastic force of the first elastic member 32, the first latch 31 remains in contact with the outer wall surface of the driven joint 20. When the driven joint 20 rotates along the first direction, i.e., the X direction, the first latch 31 moves upward during the process of leaving the groove 23 along the transition slope 231, i.e., the first latch 31 moves upward along the direction indicated by the arrow Y, and the first elastic member 32 is further compressed.

[0096] In a possible implementation, one end of the first elastic member 32 away from the first latch 31 may be directly in contact with the surface of the second baffle 112 .

[0097] In other possible implementations, in order to prevent the end of the first elastic member 32 away from the first pin 31 from detaching from the second baffle 112, a protrusion can be provided on a side of the second baffle 112 facing the first elastic member 32, and the first elastic member 32 is sleeved on the protrusion, thereby preventing the first elastic member 32 from loosening and ensuring a stable abutment effect between the first elastic member 32 and the second baffle 112.

[0098] In one possible implementation, reference Fig.10 and Fig.12 As shown, the inner wall of the first end of the driven joint 20 has a clamping portion 24 for connecting to the stirring frame 12, and the second end of the driven joint 20 has a threaded sleeve 21, which is used to be sleeved inside the active joint 40 or sleeved on the outer circumference of the active joint 40, and screwed together with the active joint 40.

[0099] When the outer wall of the threaded sleeve 21 has an outer thread, the inner wall of the active joint 40 has an inner thread that matches the outer thread. When the inner wall of the threaded sleeve 21 has an inner thread, the outer wall of the active joint 40 has an outer thread that matches the inner thread. Thus, the driven joint 20 and the active joint 40 are screwed together.

[0100] In one possible implementation, reference Figure 2 and Figure 3 As shown, the stirring frame 12 includes a rotating shaft 121 and a stirring blade 122 connected to the outer peripheral surface of the rotating shaft 121, the first end of the rotating shaft 121 is connected to the driven joint 20, the inner wall of the shell 11 has a first inner wall surface 114 opposite to the driven joint 20, and the second end of the rotating shaft 121 is rotatably set in the first inner wall surface 114.

[0101] refer to Figure 4 and Fig.12 As shown, the first end of the rotating shaft 121 can be clamped to the clamping portion 24. For example, the first end of the rotating shaft 121 has a cross column, and the clamping portion 24 can be a cross groove that is mutually clamped with the cross column, thereby connecting the stirring frame 12 to the driven joint 20.

[0102] In one possible implementation, the reference Figure 2 , Figure 3 and Fig.10 As shown, along the axial direction of the rotating shaft 121, the distance between the end of the stirring blade 122 away from the driven joint 20 and the first inner wall surface 114 is L1, and the length of the driven joint 20 screwed to the active joint 40 is L2, wherein L1>L2. Specifically, along the axial direction of the driven joint 20, the length of the screw connection between the threaded sleeve 21 and the active joint 40 is L2. Such a structure is to prevent the stirring blade 122 from interfering with the falling off of the driven joint 20 when the driven joint 20 moves away from the active joint 40 along the axial direction of the driven joint 20, and finally the driven joint 20 and the second end of the rotating shaft 121 are separated from the inner wall of the shell 11, and fall on the inner bottom wall of the shell 11, causing the stirring frame 12 to be unable to work.

[0103] Embodiment 2

[0104] The difference between the second embodiment and the first embodiment lies in that the structures of the locking assembly 30 and the inner wall of the housing 11 are different.

[0105] In the second embodiment, a second baffle plate 112 is disposed on the inner wall of the housing 11 , and a second guide hole is formed in the second baffle plate 112 .

[0106] The locking assembly 30 includes a second latch and a second elastic member. The second latch is inserted into the second guide hole. A stop protrusion is provided on the outer wall of the second latch, and the stop protrusion is located between the second baffle plate 112 and the driven joint 20. The second elastic member is sleeved on the outer peripheral surface of the second latch, and the two ends of the second elastic member are respectively abutted against the stop protrusion and the second baffle plate 112.

[0107] In a possible implementation, the second elastic member may be a spring. Of course, the second elastic member may also be an elastic sleeve. Under the elastic force of the second elastic member itself, one end of the second pin remains in contact with the outer wall of the driven joint 20.

[0108] The shape of the cross section of the second guide hole is consistent with the shape of the cross section of the second pin. For example, the second guide hole is a circular hole and the second pin is a cylinder. The second guide hole guides the radial movement of the second pin along the driven joint 20 and prevents the second pin from being deflected.

[0109] In one possible implementation, a first baffle 111 is provided on the inner wall of the shell 11, and the first baffle 111 is located between the second baffle 112 and the driven joint 20. A first guide hole 113 is provided in the first baffle 111, and the second latch is sequentially inserted into the second guide hole and the first guide hole 113, and a baffle provided on the outer wall of the second latch is located between the first baffle 111 and the second baffle 112. Such a structure can effectively prevent the second latch from being deflected.

[0110] In one possible implementation, the top of the second pin has a limiting portion whose outer diameter is larger than that of the second pin, thereby preventing the second pin from leaving the second guide hole, and the bottom of the second pin abuts against the outer wall of the driven joint 20.

[0111] refer to Figure 2 , Fig.11 and Fig.13 As shown, the active connector 40 is used to connect the driving member 50 of the image forming device to achieve power transmission.

[0112] The driving member 50 includes a motor, Fig.10 , Fig.11 and Fig.12 As shown, the active joint 40 includes a driving connection portion 42 and a threaded sleeve 43 which are connected to each other. The inner wall of the threaded sleeve 43 or the outer wall of the threaded sleeve 43 is provided with threads for threaded connection with the driven joint 20 .

[0113] The driving connection part 42 is located at one end of the active joint 40 , and the threaded sleeve 43 is located at the other end of the active joint 40 . The driving connection part 42 is used to connect with the output shaft of the motor, and the threaded sleeve 43 is threadedly connected with the threaded sleeve 21 of the driven joint 20 .

[0114] In order to limit the axial position of the active joint 40, the active joint 40 further includes a limiting ridge 41, which is located at the connection position between the driving connection portion 42 and the screw sleeve 43, and the limiting ridge 41 abuts against the outer wall of the housing 11. During operation, the power of the motor is transmitted to the active joint 40, which is then transmitted to the driven joint 20, and the driven joint 20 is transmitted to the stirring frame 12, so that the stirring frame 12 rotates to stir the carbon powder.

[0115] The remaining structures of the second embodiment are the same as those of the first embodiment and will not be described again here.

[0116] The utility model further provides an image forming device, comprising the above-mentioned powder cartridge, and the image forming device further comprises a driving member 50, and the driving member 50 is used to connect the active joint 40 of the powder cartridge.

[0117] The image forming device provided by the utility model can be a printer, a copier and the like.

[0118] refer to Figure 3 , Figure 5 and Figure 6 As shown, when the motor rotates in the first direction, the motor drives the active joint 40 to rotate in the first direction, the active joint 40 and the driven joint 20 are in a tightening rotation direction, the active joint 40 drives the driven joint 20 to rotate synchronously, and the driven joint 20 drives the stirring frame 12 to rotate in the first direction. Since the groove 23 is a structure that is recessed into the driven joint 20, when the driven joint 20 rotates in the first direction, when the first latch 31 or the second latch encounters the groove 23, it will jump from the top of the step surface 22 into the groove 23, and then move upward along the transition slope 231 to leave the groove 23, so that the groove 23 and the step surface 22 will not hinder the rotation of the driven joint 20 in the first direction, thereby ensuring that the driven joint 20 and the active joint 40 rotate synchronously in the first direction. The motor can normally drive the stirring frame 12 to stir the powder, and the powder barrel can normally supply powder.

[0119] refer to Figure 3 , Figure 7 and Figure 8As shown, when the carbon powder stored in the powder cartridge is used up, the motor rotates in the opposite direction to the first direction, and the motor drives the active joint 40 to rotate in the opposite direction to the first direction. As long as the time for the motor to rotate in the opposite direction to the first direction is greater than the time for the driven joint 20 to rotate one circle, no matter where the step surface 22 of the driven joint 20 is, it will always rotate to a position that abuts against the locking assembly 30. Under the action of the first elastic member 32 or the second elastic member, the first latch 31 or the second latch of the locking assembly 30 is inserted into the groove 23 and cannot pass over the step surface 22, thereby preventing the driven joint 20 from rotating in the opposite direction to the first direction. The motor continues to rotate in the opposite direction to the first direction, and drives the active joint 40 to rotate in the opposite direction to the first direction, so that the threaded connection position between the driven joint 20 and the active joint 40 becomes looser and looser, thereby achieving the effect of the driven joint 20 being separated from the active joint 40.

[0120] Since the active joint 40 is rotatably disposed on the shell 11 of the powder cartridge body 10, the active joint 40 moves along its own axial direction. Therefore, when the threaded connection position between the driven joint 20 and the active joint 40 is loosened, the driven joint 20 and the stirring frame 12 will be pushed along the axial direction of the driven joint 20 and move in a direction away from the active joint 40.

[0121] Since there is a sufficient gap L1 between the end of the stirring blade 122 away from the driven joint 20 and the first inner wall surface 114, that is, there is a sufficient gap between the right side of the stirring frame 12 and the inner wall of the right side of the shell 11, as long as the motor has enough reversal time, the active joint 40 will push the driven joint 20 and the stirring frame 12 along the axial direction of the driven joint 20 and move away from the active joint 40 until the driven joint 20 is separated from the active joint 40. Due to gravity, the entire stirring frame 12 cannot maintain a horizontal position, and one end falls into the shell 11 of the powder cartridge body 10, and the powder cartridge as a whole cannot work normally. Since the powder cartridge shell can be welded together or assembled into one by complex assembly, it is difficult to disassemble, so it cannot be used after being recycled by the compatible manufacturer or after the user purchases toner for replenishment.

[0122] The utility model provides a powder cartridge and an image forming device. When the carbon powder stored in the powder cartridge is consumed, the motor is reversed to make the driven joint 20 detach from the driving joint 40, and the driven joint 20 and one end of the stirring frame 12 fall off, so that the powder cartridge is scrapped. The scrapped powder cartridge cannot perform normal powder stirring action, thereby preventing the powder cartridge from being recycled or refilled with powder for use, and preventing inferior carbon powder from affecting the image quality and damaging the image forming device.

[0123] The utility model provides a powder cartridge and an image forming device. After the driven joint 20 and the stirring frame 12 fall off, they will fall into the powder cartridge body 10, resulting in the powder cartridge being unable to be restored after being scrapped, thereby preventing some compatible manufacturers from recycling the powder cartridge provided by the application for reuse.

[0124] In the description of the present invention, it should be understood that the terms used, such as “center”, “length”, “width”, “thickness”, “top”, “bottom”, “up”, “down”, “left”, “right”, “front”, “back”, “vertical”, “horizontal”, “inside”, “outside”, “axial”, “circumferential”, etc., to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the position or component referred to must have a specific direction, a specific structure and operation, and therefore cannot be understood as a limitation on the present invention.

[0125] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0126] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected, electrically connected, or can communicate with each other; they can be directly connected, or indirectly connected through an intermediate medium, so that the internal communication of two elements or the interaction relationship between two elements can be achieved. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0127] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0128] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A powder cartridge, characterized in that: include: A powder cartridge body (10), the powder cartridge body (10) comprising a shell (11) and a stirring frame (12) arranged in the shell (11); an active joint (40), the active joint (40) being rotatably disposed on the outer wall of the housing (11), the active joint (40) being used to be connected to a driving member (50) of an image forming device; A driven joint (20), wherein a first end of the driven joint (20) is connected to the stirring frame (12), and a second end of the driven joint (20) is used to be threadedly connected to the active joint (40), so that the driven joint (20) and the active joint (40) rotate synchronously along a first direction; A locking assembly (30), wherein the locking assembly (30) is arranged on the housing (11), and the locking assembly (30) abuts against the driven joint (20) along the radial direction of the driven joint (20) and cooperates with the driven joint (20); The locking assembly (30) is configured to prevent the driven joint (20) from rotating when the active joint (40) rotates in the opposite direction to the first direction, and to allow the driven joint (20) to disengage from the active joint (40) under the rotation of the active joint (40).

2. The powder cartridge according to claim 1, characterized in that: The outer wall of the driven joint (20) is provided with a step surface (22), and the step surface (22) is arranged along the axial direction of the driven joint (20). When the active joint (40) rotates in the opposite direction to the first direction, the locking assembly (30) abuts against the step surface (22).

3. The powder cartridge according to claim 2, characterized in that: The outer wall of the driven joint (20) is further provided with a groove (23), the groove (23) penetrates the driven joint (20) along the axial direction of the driven joint (20), one side wall of the groove (23) is the step surface (22), and the other side wall of the groove (23) has a transition slope (231); The transition slope (231) is configured such that when the active joint (40) rotates along the first direction, the locking assembly (30) leaves the groove (23) along the transition slope (231).

4. The powder cartridge according to any one of claims 1 to 3, characterized in that: The inner wall of the housing (11) is provided with a first baffle (111) and a second baffle (112) spaced apart from each other, and a first guide hole (113) is provided in the first baffle (111); The locking assembly (30) comprises a first latch (31) and a first elastic member (32), wherein the first latch (31) is inserted into the first guide hole (113), one end of the first latch (31) abuts against the outer wall of the driven joint (20), the other end of the first latch (31) is connected to the first elastic member (32), and the end of the first elastic member (32) away from the first latch (31) abuts against the second baffle (112).

5. The powder cartridge according to any one of claims 1 to 3, characterized in that: The inner wall of the housing (11) is provided with a second baffle (112), and a second guide hole is opened in the second baffle (112); The locking assembly (30) comprises a second latch and a second elastic member, the second latch is inserted into the second guide hole, a stop bulge is provided on the outer wall of the second latch, the stop bulge is located between the second baffle plate (112) and the driven joint (20), the second elastic member is sleeved on the outer peripheral surface of the second latch, and two ends of the second elastic member are respectively in contact with the stop bulge and the second baffle plate (112).

6. The powder cartridge according to any one of claims 1 to 3, characterized in that: The inner wall of the first end of the driven joint (20) has a clamping portion (24) for connecting to the stirring frame (12), and the second end of the driven joint (20) has a threaded sleeve (21), and the threaded sleeve (21) is used to be sleeved inside the active joint (40) or sleeved on the outer peripheral surface of the active joint (40) and screwed together with the active joint (40).

7. The powder cartridge according to any one of claims 1 to 3, characterized in that: The stirring frame (12) comprises a rotating shaft (121) and a stirring blade (122) connected to the outer peripheral surface of the rotating shaft (121); a first end of the rotating shaft (121) is connected to the driven joint (20); an inner wall of the housing (11) has a first inner wall surface (114) opposite to the driven joint (20); and a second end of the rotating shaft (121) is rotatably disposed within the first inner wall surface (114); Along the axial direction of the rotating shaft (121), the distance between the end of the stirring blade (122) away from the driven joint (20) and the first inner wall surface (114) is L1, and the length of the driven joint (20) screwed to the active joint (40) is L2, wherein L1>L2.

8. The powder cartridge according to any one of claims 1 to 3, characterized in that: The active joint (40) comprises a driving connection portion (42) and a threaded sleeve (43) which are connected to each other, and the inner wall of the threaded sleeve (43) or the outer wall of the threaded sleeve (43) is provided with a thread which is threadedly connected to the driven joint (20).

9. The powder cartridge according to claim 8, characterized in that: The active joint (40) further comprises a limiting ridge (41), wherein the limiting ridge (41) is located at the connection position between the driving connection portion (42) and the threaded sleeve (43), and the limiting ridge (41) abuts against the outer wall of the shell (11).

10. An image forming device, characterized in that: A powder cartridge comprising any one of claims 1 to 9; The image forming device further comprises a driving member (50), wherein the driving member (50) is used to connect to the active connector (40) of the powder cartridge.

Images