Processing box

Abstract

The utility model discloses a processing box, which comprises a processing box body, an inner part of which is provided with an installation space; the end part of the stirring roller extends to the outside of the processing box body from the side wall of the processing box; the fixing groove is formed in the position, corresponding to the stirring roller, of the exterior of the processing box body, the part, extending to the exterior of the processing box body, of the stirring roller is located in the fixing groove, and the end, away from the processing box body, of the fixing groove is provided with a first rotary limiting part; and the limiting piece can be rotationally installed in the fixing groove in the first direction, a second rotary limiting part is arranged at the end, away from the processing box body, of the limiting piece, the second rotary limiting part is matched with the first rotary limiting part, rotation of the limiting piece in the second direction opposite to the first direction can be limited, and therefore the limiting piece is prevented from being disengaged from the fixing groove. Through a rotary locking matching structure of the limiting piece and the fixing groove, detachable fixing of the end of the stirring roller is achieved, and the problem that in the prior art, the stirring roller cannot be independently replaced is solved.

Description

Technical Field

[0001] This application relates to the field of laser printer component technology, and more particularly to a processing cartridge. Background Technology

[0002] In laser printers, the processing cartridge is a crucial component. The stirring roller inside the processing cartridge plays a vital role in the printer's proper functioning. It agitates the toner within the processing cartridge, directing it to the developing roller or toner delivery roller at the exit, thereby assisting the drum in completing electrostatic imaging.

[0003] In existing technologies, the agitator roller is installed directly inside a relatively enclosed processing chamber, or at least the connection between the roller and its end inside the processing chamber is integrally formed. This installation structure has certain advantages, such as relatively simple installation and effective prevention of toner leakage.

[0004] However, this installation structure has a serious technical problem: when the agitator roller fails, its integral molding with the treatment box prevents separate replacement or repair. This issue causes the treatment box to malfunction after the agitator roller fails, potentially requiring the entire treatment box to be replaced, which undoubtedly increases costs and wastes resources. Utility Model Content

[0005] The purpose of this application is to provide a processing box and its limiting structure, which has the advantages of facilitating the individual replacement or maintenance of the stirring roller, preventing the limiting component from falling out, and having good sealing performance.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] A processing box is provided, comprising:

[0008] The processing box body has an internal installation space;

[0009] A stirring roller is rotatably disposed inside the processing box body, with its end extending from the side wall of the processing box to the outside of the processing box body;

[0010] A fixing groove is provided on the outside of the processing box body at a position corresponding to the stirring roller. The portion of the stirring roller extending outside the processing box body is located in the fixing groove. A first rotation limiting part is provided at the end of the fixing groove away from the processing box body.

[0011] The limiting member can be rotated into the fixing groove along the first direction. The end of the limiting member away from the processing box body is provided with a second rotation limiting part. By cooperating with the first rotation limiting part, the limiting member can be restricted to rotate along the second direction opposite to the first direction, thereby preventing the limiting member from coming out of the fixing groove.

[0012] Optionally, the first rotation limiting part is a limiting groove, and the second rotation limiting part is an elastic snap-fit ​​member. When the limiting member is rotated and installed in the fixing groove, the elastic snap-fit ​​member is snapped into the limiting groove. The elastic snap-fit ​​member and the limiting groove are configured such that the elastic snap-fit ​​member cannot be dislodged from the limiting groove without deformation.

[0013] Optionally, a first side plate and a second side plate are formed on both sides of the limiting groove, and at least one of the first side plate and the second side plate has an inclined end face. The inclined end face is configured to allow the elastic snap-fit ​​member to slide along the inclined end face into the limiting groove.

[0014] Optionally, the inclined end face has a first side and a second side, the first side being flush with the end face of the fixing groove away from the processing box body, and the second side having a chamfer at the position where it connects with the limiting groove.

[0015] Optionally, a limiting post is provided protruding from the end of the fixing groove along the rotation direction of the limiting member, and a notch is provided on the limiting post to form the limiting groove.

[0016] Optionally, the limiting member includes a limiting member body and a stop edge, the stop edge is located at the end of the limiting member body away from the processing box body, the outer diameter of the stop edge is larger than the outer diameter of the limiting member body, and the second rotation limiting part is an elastic snap-fit ​​member extending outward from the periphery of the stop edge.

[0017] Optionally, a first rotary locking part is provided in the fixing groove, and a second rotary locking part is provided on the limiting member. The first rotary locking part and the second rotary locking part are configured such that when the limiting member rotates in the fixing groove along a first direction, the second rotary locking part can bypass the first rotary locking part and abut against the first rotary locking part on the inner side of the first rotary locking part.

[0018] Optionally, the first rotary locking part forms a first inclined locking surface on the side facing the inside of the processing box body, and the second rotary locking part forms a second inclined locking surface on the side facing the outside of the processing box body. The first inclined locking surface and the second inclined locking surface abut against each other to guide the limiting member to rotate into the space between the first rotary locking part and the processing box body.

[0019] Optionally, the limiting member abuts against the stirring roller at the end face near the stirring roller, or the limiting member is sleeved on the end of the stirring roller.

[0020] Optionally, the limiting member is a sealing member, and it is interference-fitted with the limiting groove.

[0021] The beneficial effects of this application are as follows: The processing box and its limiting structure provided by this application realize the detachable fixing of the end of the stirring roller through the rotational locking fit between the limiting part and the fixing groove, which solves the problem that the stirring roller cannot be replaced separately in the prior art. It has the advantages of reducing maintenance costs, improving sealing performance and preventing the limiting part from accidentally falling out. Attached Figure Description

[0022] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] Figure 1 This is a three-dimensional structural diagram of the processing box described in the embodiments of this application;

[0024] Figure 2 This is a schematic diagram showing the disassembled state of the processing box limiting component described in the embodiments of this application;

[0025] Figure 3 This is another perspective view of the disassembled state of the processing box limiting component described in the embodiments of this application;

[0026] Figure 4 for Figure 3 A magnified view of a specific area is shown in section I.

[0027] Figure 5 This is a cross-sectional schematic diagram of the processing box described in an embodiment of this application;

[0028] Figure 6 This is a three-dimensional structural diagram of the limiting member described in an embodiment of this application.

[0029] Figure 7 This is a three-dimensional structural diagram of the limiting member described in an embodiment of this application from another perspective.

[0030] In the picture:

[0031] 100. Processing box body; 200. Stirring roller; 300. Fixing groove; 310. Limiting groove; 320. First side plate; 321. Inclined end face; 3211. First side; 3212. Second side; 330. Second side plate; 340. First rotary locking part; 341. First inclined locking surface; 350. Limiting post; 400. Limiting component; 410. Elastic snap-fit ​​component; 420. Limiting component body; 430. Side guard; 440. Second rotary locking part; 441. Second inclined locking surface. Detailed Implementation

[0032] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0038] In existing technologies, the stirring roller of a laser printer's processing cartridge is typically manufactured as a single piece or fixedly installed. While this structure offers the advantage of simple sealing, it has significant drawbacks in practical use. When the stirring roller becomes worn or deformed, or the drive gear is damaged, because the end of the stirring roller is non-removably connected to the side wall of the processing cartridge, maintenance personnel cannot replace the faulty component individually and must replace the entire processing cartridge.

[0039] To solve the above problems, refer to Figure 1-7 As shown, this application proposes to include:

[0040] The processing box body 100 has an internal installation space;

[0041] A stirring roller 200 is rotatably disposed inside the processing box body 100, with its end extending from the side wall of the processing box to the outside of the processing box body 100.

[0042] A fixing groove 300 is disposed on the outside of the processing box body 100 at a position corresponding to the stirring roller 200. The portion of the stirring roller 200 extending to the outside of the processing box body 100 is located in the fixing groove 300. A first rotation limiting part is provided at the end of the fixing groove 300 away from the processing box body 100.

[0043] The limiting member 400 can be rotatably installed into the fixing groove 300 along the first direction. The end of the limiting member 400 away from the processing box body 100 is provided with a second rotation limiting part. By cooperating with the first rotation limiting part, the limiting member 400 can be restricted to rotate along the second direction opposite to the first direction, thereby preventing the limiting member 400 from coming out of the fixing groove 300.

[0044] The processing box body 100 refers to the main structure that carries the toner hopper and transmission mechanism. It can be manufactured using injection molding and has an internal bearing seat to support the rotation of the stirring roller 200. The extended end of the stirring roller 200 refers to the shaft section that extends beyond the side wall of the processing box. The fixing groove 300 is designed as an annular groove structure. The first rotation limiting part refers to the limiting structure provided at the opening end of the fixing groove 300, such as a protrusion or recess provided at the edge of the groove opening. The second rotation limiting part is correspondingly provided at the end of the limiting member 400, which forms motion interference with the first limiting part. When the limiting member 400 rotates to its position, a mechanical interlock is generated.

[0045] Specifically, during assembly, the stirring roller 200 is inserted into the bearing seat of the processing box body 100, with its extended end entering the fixing groove 300 area. When the limiting member 400 is screwed into the fixing groove 300 in a clockwise direction, the second rotation limiting part and the first rotation limiting part make sliding contact. When rotated to a predetermined angle, the two form an interlocking state, at which point the mechanical resistance of reverse rotation increases significantly, thus preventing the limiting member 400 from disengaging by reverse rotation.

[0046] In this embodiment of the application, the unidirectional rotation specifically means that when rotating clockwise or counterclockwise, the limiting member 400 can be screwed into the fixing groove 300, and when rotating in the opposite direction, the limiting member 400 cannot be rotated into the fixing groove 300. Furthermore, when the limiting member 400 is already in the fixing groove 300, the rotation in the opposite direction can cause the limiting member 400 to come out of the fixing groove 300.

[0047] Compared to existing technologies, traditional solutions employ a closed or integrated stirring roller 200 installation structure, requiring destructive cutting for disassembly. This solution achieves non-destructive disassembly through a rotary locking structure, and the locking mechanism prevents accidental detachment due to reverse rotation during assembly. Through this technical solution, this application achieves rapid disassembly and maintenance of the stirring roller 200 assembly, overcoming the technical bottleneck of difficult repair in existing structures. Maintenance personnel can replace the stirring roller 200 without damaging the processing box body 100.

[0048] As a further optional solution to this application, refer to Figure 4-7 As shown, the first rotation limiting part is a limiting groove 310, and the second rotation limiting part is an elastic snap-fit ​​member 410. When the limiting member 400 is rotated and installed in the fixing groove 300, the elastic snap-fit ​​member 410 is snapped into the limiting groove 310. The elastic snap-fit ​​member 410 and the limiting groove 310 are configured such that the elastic snap-fit ​​member 410 cannot be dislodged from the limiting groove 310 without deformation.

[0049] The limiting groove 310 refers to the recessed structure formed at the end of the fixing groove 300 away from the processing box body 100. Specifically, it can be integrally formed with the processing box body 100 by injection molding process, or a U-shaped or rectangular groove can be processed at the end of the fixing groove 300 to accommodate the elastic snap-fit ​​410 and limit its radial displacement.

[0050] The elastic snap-fit ​​component 410 refers to a snap-fit ​​structure with elastic deformation capability. Specifically, it can be implemented by using a metal spring sheet or an injection-molded plastic protrusion. It generates locking force through elastic deformation to maintain the engagement state with the limiting groove 310.

[0051] The engagement relationship between the elastic snap fastener 410 and the limiting groove 310 means that their geometry and size are designed to form a self-locking mechanism when no external force is applied, so that the elastic snap fastener 410 cannot reverse and disengage from the limiting groove 310 when it is not compressed.

[0052] Specifically, during the process of the limiting member 400 being rotated and installed into the fixing groove 300 in the first direction, the elastic locking member 410 undergoes elastic deformation due to the compression of the side wall of the limiting groove 310 until it is fully inserted into the limiting groove 310. At this time, the elastic locking member 410 returns to its original shape, and its side wall forms a surface contact with the inner wall of the limiting groove 310. When the limiting member 400 is subjected to a reverse rotational force, the contact surface between the elastic locking member 410 and the limiting groove 310 generates resistance, preventing the limiting member 400 from disengaging from the fixing groove 300. This process achieves stable locking through the dual action of elastic deformation and mechanical limiting, while avoiding the use of additional parts such as bolts or retaining rings.

[0053] This solution, through the cooperation of the elastic snap-fit ​​410 and the limiting groove 310, retains the axial fixing function of the limiting part 400 on the stirring roller 200, and allows for quick disassembly and assembly through elastic deformation, so that the stirring roller 200 can be repaired without damaging the treatment box body 100 when it fails.

[0054] Through the above technical solution, this application solves the problem of difficult maintenance of the stirring roller 200 in the prior art. By utilizing the self-locking characteristics of the elastic snap-fit ​​part 410 and the limiting groove 310, it ensures that the limiting part 400 will not accidentally come out under normal working conditions. At the same time, the elastic deformation reduces the complexity of disassembly and assembly operations, significantly improves the maintainability of the processing box and reduces maintenance costs.

[0055] This application further proposes a processing box, as shown in the reference. Figure 4 As shown, a first side plate 320 and a second side plate 330 are formed on both sides of the limiting groove 310. At least one of the first side plate 320 and the second side plate 330 has an inclined end face 321. The inclined end face 321 is configured to allow the elastic snap-fit ​​member 410 to slide along the inclined end face 321 into the limiting groove 310.

[0056] Among them, the first side plate 320 and the second side plate 330 refer to the support structures located on both sides of the limiting groove 310. Specifically, they can be implemented by injection molding of thin-walled plastic structures to limit the lateral displacement of the elastic snap-fit ​​410.

[0057] The inclined end face 321 refers to the inclined structure formed at the end of the side plate, which can be formed by cutting or mold forming process, and is used to provide a guide path for the sliding of the elastic snap-fit ​​410.

[0058] Among them, sliding entry refers to the displacement of the elastic snap-fit ​​410 in a specific direction under the guidance of the inclined end face 321. Specifically, it can be achieved by the elastic deformation of the snap-fit ​​itself combined with the contact pressure of the inclined surface, so that the snap-fit ​​can complete the snap-fit ​​of the limiting groove 310 without being fully compressed.

[0059] During the installation of the limiting member 400 into the fixing groove 300, when the elastic snap-fit ​​member 410 contacts the inclined end face 321, the inclined end face 321 guides the snap-fit ​​to deform, causing the snap-fit ​​to slide along the inclined surface into the limiting groove 310. During this process, the elastic deformation of the snap-fit ​​should be controlled at a low level to avoid plastic deformation due to excessive compression. For example, when the first side plate 320 is provided with the inclined end face 321, the snap-fit ​​first contacts the inclined surface during rotation and is gradually compressed and deformed along the inclined surface until it completely enters the limiting groove 310; if the second side plate 330 is also provided with the inclined end face 321, bidirectional sliding guidance can be achieved.

[0060] The inclined end face 321 of this application gradually compresses the elastic element through the inclined guiding effect, reducing the instantaneous compression of the elastic element, and at the same time avoiding hard collision between the side wall and the buckle during the installation process.

[0061] Through the above technical solution, this application solves the problem that the elastic snap-fit ​​part 410 needs to be accurately aligned during installation and is easily damaged, making the installation process of the limiting part 400 smoother, reducing the difficulty of assembly operation, and ensuring the connection stability between the limiting part 400 and the fixing groove 300, thus extending the service life of the sealing structure.

[0062] Furthermore, the processing box described in the embodiments of this application continues to refer to... Figure 4 As shown, the inclined end face 321 has a first side 3211 and a second side 3212. The first side 3211 is flush with the end face of the fixing groove 300 away from the processing box body 100, and the second side 3212 is chamfered at the position where it connects with the limiting groove 310.

[0063] The first side 3211 refers to the boundary line of the inclined end face 321 near the outer edge of the fixing groove 300. Specifically, it can be implemented using a straight edge coplanar with the outer end face of the fixing groove 300 to ensure the flatness of the end face of the limiting member 400 after installation. The second side 3212 refers to the boundary line where the inclined end face 321 connects to the limiting groove 310. The chamfer refers to the beveled structure set at the connection of the second side 3212 to reduce stress concentration when the elastic snap-fit ​​member 410 slides in.

[0064] When the limiting member 400 is rotated and installed in the first direction, the elastic snap-fit ​​member 410 moves along the first side 3211 of the inclined end face 321 to the second side 3212. During the sliding process, the limiting member 400 is gradually compressed and deformed starting from the first side 3211 until it moves to the position of the second side 3212. After the deformation reaches its maximum extent and passes the second side 3212, the snap-fit ​​member slides completely into the limiting groove 310. The coplanar state of the first side 3211 and the end face of the fixed groove 300 ensures that the limiting member 400 can smoothly enter the inclined end face 321 without jamming or collision. The chamfered structure of the second side 3212 can eliminate the sharp corners of the contact edge between the snap-fit ​​member and the limiting groove 310, preventing wear debris from being generated during long-term use.

[0065] Through the above technical solution, this application achieves a smooth fit between the elastic snap-fit ​​component 410 and the limiting groove 310, reducing permanent damage caused by snap-fit ​​deformation during installation and improving the reliability of repeated disassembly and assembly of the limiting component 400. The chamfered structure ensures that the snap-fit ​​maintains effective locking force after multiple rotation operations, avoiding the risk of gap wobbling caused by edge wear and extending the overall service life of the processing box.

[0066] This application further proposes a processing box in which a limiting post 350 is provided protruding from the end of the fixing groove 300 along the rotation direction of the limiting member 400. The limiting post 350 is provided with a notch, which forms the limiting groove 310.

[0067] The limiting post 350 refers to a columnar structure extending outward from the end of the fixing groove 300 or the processing box body 100. It can be formed by injection molding or machining and is used to limit the rotation range of the limiting member 400. The notch refers to a recessed area on the side of the limiting post 350, which can be formed by cutting or molding processes. The notch is adapted to the shape of the elastic snap-fit ​​member 410. The limiting groove 310 refers to the space formed by the notch that can accommodate the elastic snap-fit ​​member 410. It can be designed as a U-shape or a C-shape to accommodate the elastic snap-fit ​​member 410 and limit its movement trajectory.

[0068] When the limiting member 400 is rotated and installed into the fixing groove 300 in the first direction, the elastic locking member 410 rotates with the limiting member 400 and slides into the limiting groove 310 along the notch of the limiting post 350. Due to the obstruction of the walls of the limiting posts 350 on both sides of the notch, the elastic locking member 410 cannot be dislodged from the limiting groove 310 in the reverse direction, thereby preventing the limiting member 400 from rotating out in the second direction. The protruding structure of the limiting post 350 further improves the positioning accuracy of the limiting groove 310 and ensures the reliable fit between the elastic locking member 410 and the limiting groove 310.

[0069] As a further optional technical solution of this application, refer to Figure 6 , 7As shown, the limiting member 400 includes a limiting member body 420 and a stop edge 430. The stop edge 430 is located at one end of the limiting member body 420 away from the processing box body 100. The outer diameter of the stop edge 430 is larger than the outer diameter of the limiting member body 420. The second rotation limiting part is an elastic snap-fit ​​member extending outward from the periphery of the stop edge 430.

[0070] The limiting component body 420 refers to a columnar structure that supports the retaining edge 430 and forms a rotational fit with the fixing groove 300. Specifically, it can be implemented as an injection-molded cylinder, with its outer diameter slightly smaller than the inner diameter of the fixing groove 300 to ensure rotational freedom. The retaining edge 430 refers to an annular flange structure located at the end of the limiting component body 420. Specifically, it can be an annular protrusion integrally formed with the limiting component body 420, with its outer diameter larger than that of the limiting component body 420, thus forming axial limiting and sealing after installation. The elastic snap-fit ​​component 410 refers to a partial protrusion structure extending outward from the periphery of the retaining edge 430. Specifically, it can be an elastic snap or a rigid protrusion, its shape matching the limiting groove 310 at the end of the fixing groove 300, used for circumferential limiting after rotation into position.

[0071] The limiting member 400 is inserted into the fixing groove 300 through the limiting member body 420 and rotates in the first direction, causing the elastic snap-fit ​​member 410 on the retaining edge 430 to engage with the limiting groove 310 at the end of the fixing groove 300. Since the outer diameter of the retaining edge 430 is larger than that of the limiting member body 420, when the limiting member 400 is rotated during installation, the retaining edge 430 abuts against the outer side of the end face of the fixing groove 300. The engagement between the elastic snap-fit ​​member 410 and the limiting groove 310 prevents the limiting member 400 from rotating out in the opposite direction. The gap between the limiting member body 420 and the fixing groove 300 allows for flexible adjustment during rotation, while the synergistic effect of the retaining edge 430 and the elastic snap-fit ​​member 410 ensures installation stability and prevents toner leakage due to seal failure.

[0072] Compared with existing technologies, the end fixing structure of the existing stirring roller 200 usually adopts a closed one-piece molding design, which cannot be disassembled and maintained. However, this solution uses the cooperation between the retaining edge 430 of the limiting member 400 and the elastic snap-fit ​​member 410 to make the end of the stirring roller 200 detachable and installable. At the same time, the size design of the outer diameter of the retaining edge 430 effectively improves the axial constraint capability of the limiting member 400 and the fixing groove 300, and avoids the limiting member 400 from accidentally falling off due to vibration or external force.

[0073] Furthermore, refer to Figure 4As shown, a first rotary locking part 340 is provided in the fixing groove 300, and a second rotary locking part 440 is provided on the limiting member 400. The first rotary locking part 340 and the second rotary locking part 440 are configured such that when the limiting member 400 rotates in the fixing groove 300 along a first direction, the second rotary locking part 440 can bypass the first rotary locking part 340 and abut against the first rotary locking part 340 on the inner side of the first rotary locking part 340.

[0074] The first rotary locking part 340 refers to the structure provided inside the fixing groove 300 for restricting the axial movement of the limiting member 400. Specifically, it can be implemented by a protrusion, groove or step structure. Its function is to axially abut against the second rotary locking part 440 on the limiting member 400 after the limiting member 400 is rotated into place, so as to prevent the limiting member 400 from moving axially and falling out of the fixing groove 300.

[0075] The second rotary locking part 440 refers to the structure provided on the limiting member 400 that cooperates with the first rotary locking part 340. Specifically, it can be implemented by using a flange, a claw, or a bevel structure. Its function is to restrict the axial movement of the limiting member 400 by abutting against the first rotary locking part 340.

[0076] When the limiting member 400 is rotated and installed into the fixing groove 300 along the first direction, the second rotary locking part 440 encounters the first rotary locking part 340 on the rotation path and bypasses the structure through inclined guide or elastic deformation. After the limiting member 400 is installed, the second rotary locking part 440 is located inside the first rotary locking part 340, forming an axial block, so that the limiting member 400 cannot move circumferentially and disengage directly without rotation along the second direction. Thus, the interaction between the first rotary locking part 340 and the second rotary locking part 440 can achieve unidirectional locking of the limiting member 400 in the fixing groove 300.

[0077] This solution, through the cooperation of the rotating locking parts, simplifies the installation process while effectively limiting the axial movement of the limiting part 400.

[0078] Through the above technical solution, this application solves the problem that the limiting component 400 in the traditional processing box may come out due to reverse rotation after rotational installation. Through the mechanical interlock design of the rotation locking part, the limiting component 400 is stably fixed in the fixing groove 300, thereby improving the overall structural reliability of the processing box.

[0079] This application further proposes that the first rotary locking part 340 forms a first inclined locking surface 341 on the side facing the inside of the processing box body 100, and the second rotary locking part 440 forms a second inclined locking surface 441 on the side facing the outside of the processing box body 100. The first inclined locking surface 341 and the second inclined locking surface 441 abut against the guide limiting member 400 and rotate into the space between the first rotary locking part 340 and the processing box body 100.

[0080] The first inclined locking surface 341 refers to the guide surface that is inclined inward from the inner wall of the fixing groove 300 toward the interior of the processing box body 100. Specifically, it can be implemented by using an inclined surface or an arc surface structure. Its function is to provide a sliding path for the rotation of the limiting member 400, so that the limiting member 400 can move along a predetermined trajectory during the rotation process.

[0081] The second inclined locking surface 441 refers to the mating surface of the outer wall of the limiting member 400 inclined towards the outside of the processing box body 100. Specifically, it can be implemented by adopting an inclined or arc surface structure that is complementary to the first inclined locking surface 341. Its function is to generate a guiding force through contact with the first inclined locking surface 341, and push the limiting member 400 to move into the fixing groove 300, thereby achieving locking.

[0082] When the limiting member 400 is rotated and installed in the first direction, the second inclined locking surface 441 contacts the first inclined locking surface 341 and slides relative to it. Due to the mating relationship between the two inclined surfaces, the limiting member 400 is guided to move into the fixing groove 300 during rotation until the second rotary locking part 440 completely bypasses the first rotary locking part 340, at which point the limiting member 400 enters the locked position. In this state, the first inclined locking surface 341 and the second inclined locking surface 441 remain in contact, forming an axial constraint to prevent the limiting member 400 from axially moving out.

[0083] This application achieves self-locking by using the axial component force generated by the inclined locking surface during rotation, which reduces the installation difficulty and improves the locking reliability.

[0084] This application further proposes that the end face of the limiting member 400 near the stirring roller 200 abuts against the stirring roller 200, or that the limiting member 400 is sleeved on the end of the stirring roller 200.

[0085] End face contact refers to the direct contact between the end face of the limiting member 400 and the axial end of the stirring roller 200. Specifically, it can be achieved by using a rubber sealing ring or an elastic plastic part. Through physical contact, a sealing barrier is formed to prevent toner from leaking from the gap between the stirring roller 200 and the processing box body 100, while also providing a certain limiting effect on the stirring roller 200 in the axial direction.

[0086] The sleeve refers to the internal hole of the limiting member 400 wrapping the end of the stirring roller 200. Specifically, it can be achieved by interference fit or snap-fit ​​structure. Through the mechanical connection between the limiting member 400 and the end of the stirring roller 200, a double fixation in the radial and axial directions is formed to prevent the stirring roller 200 from shifting during rotation.

[0087] After the limiting member 400 is rotated and installed into the fixing groove 300, its end face near the stirring roller 200 directly presses against the end of the stirring roller 200, or the inner hole of the limiting member 400 tightly wraps around the outer surface of the end of the stirring roller 200 by a sleeve arrangement. In the abutting configuration, a sealed contact surface is formed between the end face of the limiting member 400 and the stirring roller 200, preventing the toner from diffusing outward; in the sleeve configuration, the limiting member 400 and the end of the stirring roller 200 are fixedly connected by an interference fit, which can limit the axial and radial displacement of the stirring roller 200 and prevent the toner from leaking along the axial direction of the stirring roller 200.

[0088] In some specific embodiments, the limiting member 400 can be designed as a plastic sleeve with an annular groove, in which a rubber sealing ring is embedded. When it is fitted onto the end of the stirring roller 200, the sealing ring is deformed under pressure to enhance the sealing effect.

[0089] This application further proposes a processing box, including a processing box body 100, a stirring roller 200, a fixing groove 300, and a limiting member 400. The limiting member 400 is a sealing member and is interference-fitted with the limiting groove 310.

[0090] A seal is a component with a sealing function, which can be made of rubber or silicone into a ring structure. Its outer diameter is slightly larger than the inner diameter of the limiting groove 310 to achieve an interference fit. This feature fills the gap through the elastic deformation of the material during rotational installation, preventing carbon powder from leaking from the end of the stirring shaft.

[0091] An interference fit refers to a connection method between two parts, which can be achieved by selecting the hardness of the sealing material or designing dimensional tolerances. During assembly, the outer surface of the sealing element and the inner wall of the limiting groove 310 generate a continuous clamping force. This feature forms a physical barrier layer while fixing the limiting element 400, blocking the path of toner migration outward.

[0092] When the limiting member 400 rotates and embeds into the fixing groove 300 in the first direction, the outer peripheral surface of the seal and the inner wall of the limiting groove 310 generate radial pressure due to the interference fit. During this process, the seal undergoes elastic deformation to fill the internal space of the limiting groove 310, which both restricts the axial displacement of the limiting member 400 and seals the assembly gap between the end of the stirring roller 200 and the processing box body 100. During the operation of the stirring roller 200, the interference fit of the seal is maintained, effectively preventing carbon particles from escaping outward through the gap of the rotating components.

[0093] Compared to existing technologies, traditional processing boxes use an integrated structure or simple snap-fit ​​fixation, which cannot guarantee sealing performance during disassembly and maintenance. This solution, through the interference fit between the sealing element and the limiting groove 310, simultaneously forms a dynamic sealing interface while allowing the limiting element 400 to be detachably installed. Compared to structures using independent sealing rings, the interference fit integrates the sealing and limiting functions into a single component, reducing assembly steps.

[0094] Through the above technical solution, this application achieves detachable maintenance of the stirring roller 200 while eliminating the risk of toner leakage from the connection of the rotating parts. The interference fit sealing method requires no additional fasteners, and the sealing surface is automatically pressed together when the limiting part 400 rotates into position, ensuring both ease of disassembly and assembly and maintaining the internal sealing of the processing box.

[0095] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A process cartridge, characterized by, include: The processing box body (100) has an installation space inside; A stirring roller (200) is rotatably disposed inside the processing box body (100), with its end extending from the side wall of the processing box to the outside of the processing box body (100). A fixing groove (300) is provided on the outside of the processing box body (100) at a position corresponding to the stirring roller (200). The portion of the stirring roller (200) extending to the outside of the processing box body (100) is located in the fixing groove (300). A first rotation limiting part is provided at the end of the fixing groove (300) away from the processing box body (100). The limiting member (400) can be rotated into the fixing groove (300) in a first direction. The end of the limiting member (400) away from the processing box body (100) is provided with a second rotation limiting part. By cooperating with the first rotation limiting part, the limiting member (400) can be restricted to rotate in a second direction opposite to the first direction, thereby preventing the limiting member (400) from coming out of the fixing groove (300).

2. The process cartridge according to claim 1, wherein, The first rotation limiting part is a limiting groove (310), and the second rotation limiting part is an elastic snap-fit ​​member (410). When the limiting member (400) is rotatably installed in the fixing groove (300), the elastic snap-fit ​​member (410) is snapped into the limiting groove (310). The elastic snap-fit ​​member (410) and the limiting groove (310) are configured such that the elastic snap-fit ​​member (410) cannot be dislodged from the limiting groove (310) without deformation.

3. The process cartridge of claim 2 wherein, The limiting groove (310) has a first side plate (320) and a second side plate (330) formed on both sides. At least one of the first side plate (320) and the second side plate (330) has an inclined end face (321). The inclined end face (321) is configured to allow the elastic snap-fit ​​member (410) to slide along the inclined end face (321) into the limiting groove (310).

4. The process cartridge of claim 3 wherein, The inclined end face (321) has a first side (3211) and a second side (3212). The first side (3211) is flush with the end face of the fixing groove (300) away from the processing box body (100). The second side (3212) is chamfered at the position where it connects with the limiting groove (310).

5. The process cartridge of claim 3 wherein, Along the rotation direction of the limiting member (400), a limiting post (350) is provided protruding from the end of the fixing groove (300), and a notch is provided on the limiting post (350), the notch forming the limiting groove (310).

6. The process cartridge of claim 2 wherein, The limiting member (400) includes a limiting member body (420) and a stop (430). The stop (430) is located at the end of the limiting member body (420) away from the processing box body (100). The outer diameter of the stop (430) is larger than the outer diameter of the limiting member body (420). The second rotation limiting part is an elastic snap-fit ​​member (410) extending outward from the periphery of the stop (430).

7. The process cartridge according to any one of claims 1-6, wherein, A first rotary locking part (340) is provided in the fixing groove (300), and a second rotary locking part (440) is provided on the limiting member (400). The first rotary locking part (340) and the second rotary locking part (440) are configured such that when the limiting member (400) rotates in the fixing groove (300) in a first direction, the second rotary locking part (440) can bypass the first rotary locking part (340) and abut against the first rotary locking part (340) on the inner side of the first rotary locking part (340).

8. The process cartridge of claim 7 wherein, The first rotary locking part (340) forms a first inclined locking surface (341) on the side facing the inside of the processing box body (100), and the second rotary locking part (440) forms a second inclined locking surface (441) on the side facing the outside of the processing box body (100). The first inclined locking surface (341) and the second inclined locking surface (441) abut against each other and guide the limiting member (400) to rotate into the space between the first rotary locking part (340) and the processing box body (100).

9. The process cartridge according to any one of claims 1-6, wherein, The limiting member (400) abuts against the stirring roller (200) near the end face of the stirring roller (200), or the limiting member (400) is sleeved on the end of the stirring roller (200).

10. The process cartridge according to any one of claims 2-6, wherein, The limiting member (400) is a sealing member and is interference-fitted with the limiting groove (310).

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