Developing box

Abstract

The embodiment of the utility model provides a developing box. The developing box comprises a shell assembly, a transmission assembly, a developing roller and a detection piece, the transmission assembly comprises a coupler, a stirring gear and a transmission gear, the coupler, the stirring gear and the transmission gear are all rotatably arranged on the shell assembly, one end of the coupler is provided with a driving force receiving part, and the coupler is in driving connection with the stirring gear and the transmission gear. The developing roller is rotatably arranged on the shell assembly along a first axis, and the coupler can rotate relative to the shell assembly along a second axis. The detection part is movably arranged on the shell assembly, the transmission gear is in contact with the detection part through rotation so that the detection part can move, a force transmission path passing through the transmission gear is formed between the coupler and the detection part, and the stirring gear is separated from the force transmission path. The developing box provided by the embodiment of the utility model can improve the movement accuracy of the detection piece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrophotographic imaging, and particularly relates to a developing cartridge. BACKGROUND

[0002] In the related art, a developing cartridge is widely applied to an electrophotographic imaging device such as a laser printer, a copier, a fax machine and the like. Generally, the developing cartridge includes a coupling, which receives a rotary driving force from the electrophotographic imaging device during an imaging process to drive other structures of the developing cartridge to rotate.

[0003] However, the detection member in the developing cartridge in the related art has low motion precision. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the main purpose of the embodiments of the present application is to provide a developing cartridge capable of improving the motion precision of a detection member.

[0005] To achieve the above purpose, the technical scheme of the embodiments of the present application is as follows:

[0006] The embodiments of the present application provide a developing cartridge, which comprises:

[0007] a housing assembly;

[0008] a transmission assembly, the transmission assembly comprising a coupling, a stirring gear and a transmission gear, the coupling, the stirring gear and the transmission gear are rotatably arranged on the housing assembly, one end of the coupling has a driving force receiving portion, the coupling is drivingly connected with the stirring gear and the transmission gear respectively;

[0009] a developing roller, the developing roller is rotatably arranged on the housing assembly along a first axis, the coupling is rotatable relative to the housing assembly along a second axis;

[0010] a detection member, the detection member is movably arranged on the housing assembly, the transmission gear is rotatable to contact the detection member to move the detection member, a transmission path passing through the transmission gear is formed between the coupling and the detection member, and the stirring gear is separated from the transmission path.

[0011] In an embodiment, the housing assembly comprises a housing body, the transmission assembly is located at one side of the housing body along a length direction, the transmission gear comprises a detection gear, a partial region of the detection gear extends towards a side away from the housing body to form a protruding portion, a partial region of the detection member extends towards a side close to the housing body to form a receiving portion, and the detection gear is rotatable to make the protruding portion abut against the receiving portion to move the detection member.

[0012] In one embodiment, the housing assembly includes a housing body and a cover, the cover and the transmission assembly are located on one side of the housing body along the length direction, the cover has a mounting slot, and at least a partial region of the detection member is slidably arranged in the mounting slot.

[0013] In one embodiment, the mounting slot includes first and second slot walls spaced apart from each other, and at least a partial region of one of the first and second slot walls is protruded to form a guide rail, and a partial region of the detection member is recessed to form a groove, and at least a partial region of the guide rail is located in the groove, so that the detection member is slidably arranged on the guide rail.

[0014] In one embodiment, the mounting slot is a curved slot, so that the detection member slides along a first trajectory, and the first trajectory is curved.

[0015] In one embodiment, the developing roller and the coupling are drivingly connected, the transmission gear is rotated to contact the detection member, so that the detection member moves in a first plane, and the first plane is perpendicular to the rotation axis of the developing roller.

[0016] In one embodiment, the transmission gear includes a plurality of sub-gears, and the detection gear is drivingly connected to the coupling through at least two of the sub-gears.

[0017] In one embodiment, the plurality of sub-gears includes a first sub-gear and a second sub-gear, the coupling is drivingly connected to the first sub-gear, the first sub-gear is drivingly connected to the stirring gear and the second sub-gear respectively, and the detection gear is drivingly connected to the coupling through the second sub-gear and the first sub-gear.

[0018] In one embodiment, the driving force receiving portion is a driving force receiving hole, a partial region of the housing assembly is protruded to form a support column, one end of the coupling away from the driving force receiving hole has a support hole, the coupling is rotatably arranged on the support column through the support hole, and a projection of the driving force receiving hole is located in a projection range of the support hole in a plane perpendicular to the second axis.

[0019] In one embodiment, the projection range of the driving force receiving hole is smaller than the projection range of the support hole.

[0020] This application provides a developing cartridge, including a housing assembly, a transmission assembly, a developing roller, and a detection element. The transmission assembly includes a coupling, a stirring gear, and a transmission gear, all rotatably mounted on the housing assembly. One end of the coupling has a driving force receiving portion, and the coupling is drivenly connected to both the stirring gear and the transmission gear. The developing roller is rotatably mounted on the housing assembly along a first axis, and the coupling is rotatable relative to the housing assembly along a second axis. The detection element is movably mounted on the housing assembly. The transmission gear rotates to contact the detection element, causing it to move. A force transmission path is formed between the coupling and the detection element, passing through the transmission gear, while the stirring gear is separated from the force transmission path. In other words, the detection element engages with the transmission gear, not the stirring gear. This reduces the risk of decreased accuracy of the detection element's movement due to vibration of the stirring gear, and improves the accuracy of the detection element's movement. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a developing cartridge according to an embodiment of this application;

[0022] Figure 2 for Figure 1 First exploded view of the developing chamber;

[0023] Figure 3 for Figure 2 Schematic diagram of the structure at point A;

[0024] Figure 4 for Figure 1 Second exploded view of the developing chamber;

[0025] Figure 5 for Figure 4 Schematic diagram of the structure at point B;

[0026] Figure 6 for Figure 1 Side view of the developing chamber;

[0027] Figure 7 for Figure 2 Schematic diagram of the structure of the coupling;

[0028] Figure 8 for Figure 7 A structural schematic diagram of the coupling from another perspective;

[0029] Figure 9 for Figure 7 Front view of the coupling;

[0030] Figure 10 for Figure 9 Sectional view of CC;

[0031] Figure 11 forFigure 1 A schematic diagram of the structure of the testing component.

[0032] Explanation of reference numerals in the attached figures

[0033] 10. Housing assembly; 11. Housing body; 12. Protective cover; 12a. Mounting groove; 13. Guide rail; 14. Support column; 20. Transmission assembly; 21. Coupling; 21a. Drive force receiving hole; 21b. Support hole; 22. Stirring gear; 23. Transmission gear; 231. Detection gear; 2311. Protrusion; 232. First sub-gear; 233. Second sub-gear; 234. Developing roller gear; 235. Powder feeding roller gear; 30. Detection component; 30a. Groove; 31. Receiving part; 40. Developing roller. Detailed Implementation

[0034] In this application, the orientation or positional relationship of the "length direction" is based on the appendix. Figure 1 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0035] One embodiment of this application provides a developer cartridge; please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 8 The developing cartridge includes a housing assembly 10, a transmission assembly 20, and a detection component 30.

[0036] The transmission assembly 20 includes a coupling 21, an agitator gear 22, and a transmission gear 23. The coupling 21, the agitator gear 22, and the transmission gear 23 are all rotatably mounted on the housing assembly 10. One end of the coupling 21 has a driving force receiving part. The coupling 21 is drivenly connected to the agitator gear 22 and the transmission gear 23, respectively.

[0037] The developing roller 40 is rotatably mounted on the housing assembly 10 along a first axis, and the coupling 21 is rotatable relative to the housing assembly 10 along a second axis.

[0038] The detection element 30 is movably mounted on the housing assembly 10. The transmission gear 23 rotates to contact the detection element 30, thereby moving the detection element 30. A force transmission path is formed between the coupling 21 and the detection element 30 through the transmission gear 23, and the stirring gear 22 is separated from the force transmission path.

[0039] Specifically, the transmission assembly 20 refers to the assembly that transmits the power output from the external device to the various actuators inside the developing chamber.

[0040] The driving force receiving portion of the coupling 21 is configured to cooperate with a driving structure to receive a driving force from the driving structure. For example, the driving force receiving portion is configured to cooperate with an image forming device to receive a rotational driving force from the image forming device to rotate the coupling 21.

[0041] The structure type of the driving force receiving portion is not limited.

[0042] For example, the driving force receiving portion is a driving force receiving hole 21a, and the image forming device includes a driving shaft, at least a part of the driving shaft being located in the driving force receiving hole to cooperate with the driving force receiving hole 21a to rotate the coupling 21.

[0043] For another example, the driving force receiving portion is a connecting shaft, and the image forming device has a connecting hole, at least a part of the connecting shaft being located in the connecting hole, and the connecting hole is configured to rotate to rotate the connecting shaft, and further rotate the coupling 21.

[0044] The stirring gear 22 is configured to drive a stirring device in the housing assembly 10 to rotate, so that the developer (toner) in the housing assembly 10 is uniformly distributed during use.

[0045] The transmission gear 23 is configured to engage with the coupling 21 to transmit the driving force received by the coupling 21 to move the detection member 30.

[0046] In fact, the transmission gear 23 is a gear structure different from the stirring gear 22, which can be a single gear structure or a gear set including a plurality of gear structures. For example, the transmission gear 23 is a collection of all gears on the developing cartridge except the stirring gear 22.

[0047] Along the force transmission path, the coupling 21 rotates to rotate the transmission gear 23, which in turn contacts the detection member 30 to move the detection member 30.

[0048] The separation of the stirring gear 22 from the force transmission path means that there is no driving connection between the stirring gear 22 and the detection member 30. That is, the detection member 30 is not driven by the stirring gear 22, but is driven by the transmission gear 23. Thus, the influence of the stirring gear 22 on the detection member 30 can be greatly reduced.

[0049] The specific structure of the transmission gear 23 is not limited.

[0050] For example, the transmission gear 23 includes a detection gear 231, and the coupling 21 is drivingly connected to the detection gear 231 to contact the detection member 30 through the detection gear 231 to move the detection member 30.

[0051] It should be noted that the transmission gear 23 can also include other gear structures. For example, the transmission gear 23 includes a developing roller gear 234, the developing roller 40 is connected with the developing roller gear 234, and the outer circumferential surface of the coupling 21 is engaged with the developing roller gear 234 to drive. Thus, the developing roller gear 234 can transmit the driving force received by the coupling 21 to the developing roller 40, so as to rotate the developing roller 40.

[0052] For another example, the transmission gear 23 includes a powder feeding roller gear 235, and the outer circumferential surface of the coupling 21 is engaged with the powder feeding roller gear 235 to drive. Thus, the powder feeding roller gear 235 can transmit the driving force received by the coupling 21 to the powder feeding roller, so as to rotate the powder feeding roller.

[0053] The first axis refers to an axis around which the developing roller 40 rotates.

[0054] The second axis refers to an axis around which the coupling 21 rotates.

[0055] It should be noted that the first axis and the second axis are different axes. That is, the rotation axes of the developing roller 40 and the coupling 21 are different axes.

[0056] The manner in which the stirring gear 22 is drivingly connected with the coupling 21 is not limited.

[0057] For example, the stirring gear 22 is engaged with the coupling 21 to achieve transmission.

[0058] When the coupling 21 rotates under the driving force of the image forming apparatus, the transmission gear 23 will rotate under the driving of the coupling 21. During the rotation of the transmission gear 23, the transmission gear 23 will contact the detection member 30, so as to drive the detection member 30 to move, thereby enabling the image forming apparatus to obtain the detection information of the detection member 30.

[0059] It should be noted that the detection member 30 moves to switch between different positions, thereby being able to provide corresponding detection information.

[0060] For example, the coupling 21 drives the transmission gear 23 to rotate, so as to drive the detection member 30 to move from an initial position to a detection position. Thus, after the developing cartridge is installed on the image forming apparatus, the image forming apparatus can be facilitated to restart counting.

[0061] It should be noted that when the detection member 30 moves from the initial position to the detection position, the transmission gear 23 no longer drives the detection member 30 to move during the rotation of the transmission gear 23. Thus, after the developing cartridge is installed on the image forming apparatus, the image forming apparatus can be facilitated to restart counting.

[0062] Of course, in some other embodiments, when the detection member 30 is moved from the initial position to the detection position, the transmission gear 23 can drive the detection member 30 to move multiple times in the process of rotating. Thus, after the developing cartridge is installed on the image forming device, the image forming device can be facilitated to restart counting.

[0063] In the related art, the movement power of the detection member 30 of the developing cartridge is transmitted through the stirring gear 22. Since the stirring gear 22 is connected with the stirring rod, and the rod part of the stirring rod is located in the powder tank of the developing cartridge, the resistance generated by the carbon powder in the powder tank to the rotation of the stirring rod increases the vibration of the stirring gear 22, thereby affecting the accuracy of the movement of the detection member 30.

[0064] In the developing cartridge of the embodiment of the present application, one end of the coupling 21 has a driving force receiving part, and the coupling 21 is drivingly connected with the stirring gear 22 and the transmission gear 23, respectively. The developing roller 40 is rotatably arranged on the housing assembly 10 along a first axis, and the coupling 21 is rotatable relative to the housing assembly 10 along a second axis. The detection member 30 is movably arranged on the housing assembly 10, and the transmission gear 23 is configured to rotate to contact the detection member 30 to move the detection member 30. A transmission path is formed between the coupling 21 and the detection member 30 through the transmission gear 23, and the stirring gear 22 is separated from the transmission path. That is, the detection member 30 cooperates with the transmission gear 23 instead of the stirring gear 22. Thus, the risk of reducing the movement accuracy of the detection member 30 due to the vibration of the stirring gear 22 can be reduced, and the movement accuracy of the detection member 30 can be improved.

[0065] In one embodiment, referring to Figure 1 , Figure 4 , Figure 5 and Figure 11 , the housing assembly 10 includes a housing body 11, and the transmission assembly 20 is located on one side of the housing body 11 along the length direction. The transmission gear 23 includes a detection gear 231, and a part of the detection gear 231 extends towards the side away from the housing body 11 to form a protruding part 2311. A part of the detection member 30 extends towards the side close to the housing body 11 to form a receiving part 31. The detection gear 231 is configured to rotate to make the protruding part 2311 abut against the receiving part 31 to move the detection member 30. Thus, the protruding part 2311 abuts against the receiving part 31 to move the detection member 30, thereby improving the stability and accuracy of the detection member 30 in the movement process.

[0066] Specifically, the protruding part 2311 refers to the part of the detection gear 231 extending towards the side away from the housing body 11.

[0067] The receiving part 31 refers to the part of the detection member 30 extending towards the side close to the housing body 11.

[0068] When the external power is transmitted to the transmission assembly 20 through the shaft coupling 21, the transmission assembly 20 drives the detection gear 231 to rotate, and the protruding portion 2311 of the detection gear 231 rotates accordingly. With the rotation of the detection gear 231, the protruding portion 2311 moves to abut against the receiving portion 31 of the detection member 30, and the detection gear 231 drives the receiving portion 31 to move by means of the protruding portion 2311, so as to drive the detection member 30 to move.

[0069] It should be noted that in some embodiments, during the rotation of the detection gear 231, the protruding portion 2311 can only drive the receiving portion 31 once with the rotation of the detection gear 231, that is, the detection gear 231 only briefly contacts the detection member 30, so that the detection member 30 moves from the initial position to the detection position, that is, separates from the detection member 30, and does not contact the detection member 30 again in the subsequent rotation process. Thus, after the developing cartridge is installed on the image forming apparatus, the image forming apparatus can start counting again.

[0070] In other embodiments, during the rotation of the detection gear 231, the protruding portion 2311 can drive the receiving portion 31 multiple times with the rotation of the detection gear 231, so that the image forming apparatus can count multiple times after the developing cartridge is installed on the image forming apparatus.

[0071] In an embodiment, referring to Figure 1 , Figure 2 and Figure 3 , the housing assembly 10 includes a housing body 11 and a cover 12, the cover 12 and the transmission assembly 20 are located on one side of the housing body 11 along the length direction, and the cover 12 has a mounting groove 12a, at least a partial area of the detection member 30 is slidably arranged in the mounting groove 12a. Thus, by arranging at least a partial area of the detection member 30 in the mounting groove 12a, the movement of the detection member 30 can be guided, and the accuracy and reliability of detection are improved.

[0072] Specifically, the cover 12 is located on one side of the housing body 11 along the length direction, and can protect the transmission assembly 20.

[0073] It can be understood that the cover 12 is located on the side of the transmission assembly 20 away from the housing body 11, and the cover 12 has a containing cavity, and the transmission assembly 20 is located in the containing cavity.

[0074] The mounting groove 12a refers to a groove structure on the cover 12, and at least a partial area of the detection member 30 is located in the mounting groove 12a and can slide in the mounting groove 12a.

[0075] The detection member 30 can have a partial area located in the mounting groove 12a, or all areas located in the mounting groove 12a.

[0076] The shape of the mounting groove 12a is not limited.

[0077] For example, referring to Figure 3 and Figure 6 , the mounting groove 12a is a curved groove, so that the detection piece 30 slides along a first trajectory, wherein the first trajectory is curved. In this way, the movement of the detection piece 30 can be better guided, and the shaking or jamming of the detection piece 30 during sliding can be reduced, thereby improving the accuracy of the movement of the detection piece 30.

[0078] Specifically, the first trajectory refers to the movement trajectory of the detection piece 30 in the mounting groove 12a.

[0079] In other embodiments, the detection piece 30 can also have a sliding groove, and part of the area of the cover 12 extends into the sliding groove.

[0080] For example, the detection piece 30 has a mounting groove, and the cover 12 includes a protruding portion, at least part of the area of the protruding portion is located in the mounting groove, so that the detection piece 30 can slide relative to the cover 12. In this way, the protruding portion can guide the movement of the detection piece 30, thereby improving the accuracy and reliability of the detection.

[0081] In an embodiment, referring to Figure 3 , the mounting groove 12a includes first and second groove walls spaced from each other, at least part of the area of one of the first and second groove walls protrudes to form a guide rail 13, and at least part of the area of the detection piece 30 is recessed to form a groove 30a, at least part of the area of the guide rail 13 is located in the groove 30a, so that the detection piece 30 is slidably arranged on the guide rail 13. In this way, the cooperation of the guide rail 13 and the groove 30a provides stable movement guidance for the detection piece 30, so that the detection piece 30 always remains on the predetermined trajectory during sliding, avoiding shaking and deviation of the detection piece 30, thereby improving the accuracy of the movement of the detection piece 30.

[0082] Specifically, at least part of the area of one of the first and second groove walls protrudes to form a guide rail 13, which means that only at least part of the area of the first groove wall can protrude to form a guide rail 13, or only at least part of the area of the second groove wall can protrude to form a guide rail 13, or at least part of the area of the first groove wall and at least part of the area of the second groove wall can protrude to form a guide rail 13.

[0083] The guide rail 13 refers to a component that provides a sliding track for the detection piece 30, so that the detection piece 30 can slide in a predetermined direction.

[0084] The groove 30a refers to a component that cooperates with the guide rail 13 to achieve sliding connection between the detection piece 30 and the guide rail 13, and ensures smooth sliding of the detection piece 30 in the mounting groove 12a.

[0085] In one embodiment, as shown in

[0086] In one embodiment, as shown in Figure 2 、 Figure 4 and Figure 5 , the developing roller 40 and the coupling 21 are drivingly connected, and the transmission gear 23 is configured to rotate to contact the detection member 30 to drive the detection member 30 to move in a first plane, which is perpendicular to the rotation axis of the developing roller 40. In this way, the detection member 30 can be driven to move conveniently, and the accuracy of the movement of the detection member 30 can be further improved.

[0087] In one embodiment, as shown in Figure 5 , the transmission gear 23 comprises a plurality of sub-gears, and the detection gear 231 is drivingly connected to the coupling 21 through at least two sub-gears. In this way, the detection gear 231 can be driven to rotate synchronously through the sub-gears.

[0088] In one embodiment, as shown in Figure 5 , the plurality of sub-gears comprises a first sub-gear 232 and a second sub-gear 233, the coupling 21 is drivingly connected to the first sub-gear 232, the first sub-gear 232 is drivingly connected to the stirring gear 22 and the second sub-gear 233, and the detection gear 231 is drivingly connected to the coupling 21 through the second sub-gear 233 and the first sub-gear 232. In this way, the transmission gear 23 can be better adapted to the structural layout of the developing cartridge, and the power of the coupling 21 can be effectively transmitted to the stirring gear 22 and the detection gear 231.

[0089] Specifically, the first sub-gear 232 refers to a component that is drivingly connected to the coupling 21 to receive the power transmitted by the coupling 21 and transmit the power to the stirring gear 22 and the second sub-gear 233.

[0090] The second sub-gear 233 refers to a component that is drivingly connected to the first sub-gear 232 to further transmit the power to the detection gear 231.

[0091] The coupling 21 receives the driving force from the driving structure and transmits the power by being drivingly connected to the first sub-gear 232. The first sub-gear 232 is drivingly connected to the stirring gear 22 and the second sub-gear 233 at the same time to distribute the power to the stirring device and the detection gear 231. The second sub-gear 233 further transmits the power to the detection gear 231 to ensure that the detection gear 231 can rotate normally and drive the detection member 30 to move.

[0092] It can be understood that the sub-gears can further include a plurality of first sub-gears 232 and second sub-gears 233, and the number of the first sub-gears 232 and the second sub-gears 233 can be adjusted according to actual conditions.

[0093] In an embodiment, referring to Figure 2 , Figure 7 , Figure 8 , Figure 9 and Figure 10 , the driving force receiving portion is a driving force receiving hole 21a, a partial region of the housing assembly 10 protrudes to form a support column 14, the coupling 21 has a support hole 21b at an end thereof away from the driving force receiving hole 21a, the coupling 21 is rotatably installed on the support column 14 through the support hole 21b, and a projection of the driving force receiving hole 21a is located within a projection range of the support hole 21b in a plane perpendicular to the second axis. Thus, the problem of insufficient strength of the support column 14 due to the excessively large hole diameter of the driving force receiving hole 21a and the excessively small hole diameter of the support hole 21b can be prevented, and the problem of bending or breaking of the connection between the coupling 21 and the housing assembly 10 due to insufficient strength of the support column 14 can be avoided.

[0094] Specifically, the end of the coupling 21 away from the driving force receiving hole 21a has a support hole 21b for installing the coupling 21 on the support column 14. It can be understood that the support column 14 penetrates into the support hole 21b to support the coupling 21 while allowing the coupling 21 to rotate on the support column 14.

[0095] The support column 14 corresponds to the structural shape of the support hole 21b, and the outer dimensions of the support column 14 are limited by the hole diameter of the support hole 21b, so that when the size of the support hole 21b is increased, the outer dimensions of the support column 14 can also be designed to be larger.

[0096] The specific position of the support column 14 can be set according to actual conditions, for example, the support column 14 is located on the outer side surface of the housing assembly 10.

[0097] In a plane perpendicular to the second axis, a projection of the driving force receiving hole 21a is located within a projection range of the support hole 21b. That is, the size of the driving force receiving hole 21a is smaller than or equal to the size of the support hole 21b, so that the projection range of the driving force receiving hole 21a is within the projection range of the support hole 21b in terms of projection. Thus, the size of the support hole 21b can be large enough, and compared with the design that the driving force receiving hole 21a is larger than the support hole 21b, the cooperation between the support hole 21b and the support column 14 is more stable, the support column 14 can be made larger and stronger, and the support column 14 is less likely to bend or break.

[0098] In an embodiment, referring to Figure 9 andFigure 10 The projection range of the driving force receiving hole 21a is smaller than the projection range of the support hole 21b. Thus, the strength of the support column 14 can be further improved so that the support column 14 is less likely to bend or break.

[0099] In the description of the present application, the description of the terms "in an embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the exemplary description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, a person skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0100] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is included in the protection scope of the present application.

Claims

1. A developing cartridge, characterized by, The developing cartridge comprises: a housing assembly; a transmission assembly, the transmission assembly comprising a shaft, a stirring gear and a transmission gear, the shaft, the stirring gear and the transmission gear are rotatably arranged on the housing assembly, one end of the shaft has a driving force receiving portion, the shaft is drivingly connected with the stirring gear and the transmission gear respectively; a developing roller, the developing roller is rotatably arranged on the housing assembly along a first axis, the shaft is rotatable relative to the housing assembly along a second axis; a detection member, the detection member is movably arranged on the housing assembly, the transmission gear is rotatable to contact the detection member to move the detection member, a transmission path is formed between the shaft and the detection member through the transmission gear, and the stirring gear is separated from the transmission path.

2. The process cartridge according to claim 1, wherein, The housing assembly comprises a housing body, the transmission assembly is located at one side of the housing body along a length direction, the transmission gear comprises a detection gear, a part of the detection gear extends towards a side away from the housing body to form a protruding portion, a part of the detection member extends towards a side close to the housing body to form a receiving portion, the detection gear is rotatable to make the protruding portion abut against the receiving portion to move the detection member.

3. The process cartridge according to claim 1 or 2, wherein The housing assembly comprises a housing body and a cover, the cover and the transmission assembly are located at one side of the housing body along a length direction, the cover has a mounting groove, at least a part of the detection member is slidably arranged in the mounting groove.

4. The process cartridge of claim 3 wherein, The mounting groove comprises first and second groove walls spaced from each other, at least one of the first and second groove walls has a part protruding to form a guide rail, a part of the detection member is recessed to form a groove, at least a part of the guide rail is located in the groove, so that the detection member is slidably arranged on the guide rail.

5. The process cartridge of claim 3 wherein, The mounting groove is a curved groove, so that the detection member slides along a first trajectory, wherein the first trajectory is curved.

6. The process cartridge according to claim 1 or 2, wherein The developing roller and the shaft are drivingly connected, the transmission gear is rotatable to contact the detection member to move the detection member in a first plane, the first plane is perpendicular to an axis of rotation of the developing roller.

7. The process cartridge of claim 2, wherein, The transmission gear comprises a plurality of sub-gears, the detection gear is drivingly connected with the shaft through at least two of the sub-gears.

8. The process cartridge of claim 7 wherein, The plurality of sub-gears comprises a first sub-gear and a second sub-gear, the shaft is drivingly connected with the first sub-gear, the first sub-gear is drivingly connected with the stirring gear and the second sub-gear respectively, the detection gear is drivingly connected with the shaft through the second sub-gear and the first sub-gear.

9. The process cartridge according to claim 1 or 2, wherein The driving force receiving portion is a driving force receiving hole, a part of the housing assembly protrudes to form a support column, one end of the shaft away from the driving force receiving hole has a support hole, the shaft is rotatably arranged on the support column through the support hole, in a plane perpendicular to the second axis, a projection of the driving force receiving hole is located within a projection range of the support hole.

10. The process cartridge of claim 9 wherein, The projection range of the driving force receiving hole is smaller than the projection range of the support hole. The projection range of the driving force receiving hole is smaller than the projection range of the support hole.

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