Process cartridge

Abstract

The application discloses a processing box, which comprises a drum box, a developing box and at least one locking assembly. The drum box is formed with a containing groove. The developing box is formed with a matching groove. The locking assembly comprises an elastic member and a locking member. The elastic member is arranged in the containing groove. The locking member is located between the elastic member and the developing box and is movably connected with the drum box. During switching of the locking assembly from the unlocking position to the locking position, the developing box is pushed downward, the developing box pushes the locking member, the elastic member is switched from the second state to the first state, the matching groove is opposite to the containing groove, and the locking member is matched in the matching groove under the action of the restoring force of the elastic member. During switching of the locking assembly from the locking position to the unlocking position, the force is applied to one end of the locking member, the compressed elastic member is switched from the first state to the second state, and the locking member is separated from the matching groove. According to the processing box, the developing box can be prevented from being separated from the drum box, the service life of the developing box is prolonged, and the dismounting mode is simple and convenient to operate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of image forming apparatuses, and particularly to a process cartridge. BACKGROUND

[0002] In the prior art, the developing cartridge in the process cartridge of the electronic imaging device is fixed on the drum cartridge, and a pushing mechanism is usually used to make the developing roller tightly adhere to the photosensitive drum to avoid the torque generated when the developing roller rotates from separating the developing cartridge and the drum cartridge. However, the above connection mode has the risk of the developing cartridge falling off from the drum cartridge when the process cartridge is taken out of the electronic imaging device, which affects the service life of the process cartridge. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a process cartridge which can avoid the separation of the developing cartridge and the drum cartridge, improve the service life of the developing cartridge, and has a simple disassembly mode of the developing cartridge and the drum cartridge and is easy to operate.

[0004] According to the process cartridge of the embodiment of the present application, the drum cartridge is formed with a receiving groove, the developing cartridge is arranged in the drum cartridge and is formed with a matching groove opposite to the receiving groove, at least one locking assembly is arranged, the locking assembly comprises an elastic member and a locking member, the elastic member is arranged in the receiving groove, the locking member is arranged between the elastic member and the developing cartridge and is movably connected with the drum cartridge, the elastic member is switchable between a first state and a second state, and the locking assembly is switchable between a locking position and an unlocking position. In the process of switching the locking assembly from the unlocking position to the locking position, the developing cartridge is pushed downward, the developing cartridge pushes the locking member, the elastic member is switched from the second state to the first state, the matching groove is opposite to the receiving groove, and the locking member is matched in the matching groove under the action of the restoring force of the elastic member. In the process of switching the locking assembly from the locking position to the unlocking position, the locking member is subjected to an action force, the elastic member is switched from the first state to the second state, and the locking member is separated from the matching groove.

[0005] According to the process cartridge of the embodiment of the present application, the locking assembly is arranged between the developing cartridge and the drum cartridge, the locking member is matched with the receiving groove of the drum cartridge and the matching groove of the developing cartridge when the locking assembly is in the locking position, and the locking member is separated from the matching groove when the locking assembly is in the unlocking position. Thus, compared with the conventional process cartridge, the separation of the developing cartridge and the drum cartridge can be avoided, the service life of the developing cartridge is improved, and the disassembly mode of the developing cartridge and the drum cartridge is simple and easy to operate.

[0006] According to some embodiments of the present application, the locking member comprises a first fitting portion and a first mounting portion connected to each other, a free end of the first mounting portion extends in the first direction and protrudes out of the drum box, and the elastic member is sleeved on the first mounting portion.

[0007] According to some embodiments of the present application, the locking assembly further comprises an operating member sleeved on the free end of the first mounting portion, the operating member comprises an operating portion and a connecting portion connected to each other, and two ends of the operating portion protrude out of two ends of the connecting portion in a second direction, wherein the second direction is perpendicular to the first direction.

[0008] According to some embodiments of the present application, a side of the first fitting portion adjacent to the developing box has a first guide surface extending obliquely toward the developing box in the second direction.

[0009] According to some embodiments of the present application, the locking member comprises a second fitting portion and a second mounting portion connected to each other, a free end of the second mounting portion extends in the second direction and protrudes out of the drum box, the second mounting portion is rotatably connected to the drum box, and the second fitting portion is located between the elastic member and the developing box in the first direction.

[0010] According to some embodiments of the present application, the locking member further comprises a boss provided on a side of the second fitting portion adjacent to the elastic member, and the elastic member is sleeved on the boss.

[0011] According to some embodiments of the present application, a side of the second mounting portion away from the developing box is provided with an extension portion extending in the first direction.

[0012] According to some embodiments of the present application, a side of the second fitting portion adjacent to the developing box has a second guide surface extending obliquely toward the developing box in the second direction.

[0013] According to some embodiments of the present application, there are two locking assemblies, and the two locking assemblies are respectively located on two sides of the developing box in the first direction.

[0014] According to some embodiments of the present application, the locking assembly further comprises a dialing rod, the dialing rod comprises a connecting shaft and a pressing plate, the connecting shaft is located in the accommodating groove, two ends of the connecting shaft are respectively slidably connected to the two locking members, and the pressing plate is provided at a middle portion of the connecting shaft and at least part of the pressing plate protrudes out of the drum box.

[0015] According to some embodiments of the present application, the connecting shaft comprises a body and two sliding blocks, the two sliding blocks are located at the axial two ends of the body, one of the sliding blocks and the locking piece is provided with a matching column, the other of the sliding blocks and the locking piece is formed with a sliding groove, and the matching column is slidably matched in the sliding groove.

[0016] Additional aspects and advantages of the present application will be made apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a schematic view of a process cartridge according to a first embodiment of the present application;

[0019] Figure 2 is a sectional view of the process cartridge shown in Figure 1

[0020] Figure 3 is an enlarged view of a portion of the process cartridge shown in Figure 2

[0021] Figure 4 is a schematic view of a process cartridge according to a second embodiment of the present application;

[0022] Figure 5 is a sectional view of a portion of the process cartridge shown in Figure 4

[0023] Figure 6 is a schematic view of a process cartridge according to a third embodiment of the present application;

[0024] Figure 7 is a sectional view of a portion of the process cartridge shown in Figure 6

[0025] Figure 8 is a schematic view of a process cartridge according to a fourth embodiment of the present application;

[0026] Figure 9 is a schematic view of a process cartridge shown in Figure 8

[0027] Figure 10 is an enlarged view of portion A shown in Figure 9 REFERENCE NUMERALS

[0028] Process cartridge 100;

[0029] Process cartridge 100;​​​​​

[0030] drum box 1; accommodating groove 11; developing box 2; matching groove 21; locking assembly 3; elastic member 31; locking member 32;

[0031] first matching part 321; first guide surface 3211; first mounting part 322; operating member 33; operating part 331;

[0032] connecting part 332; second matching part 323; second guide surface 3231; second mounting part 324; extending part 3241;

[0033] boss 325; lever 4; connecting shaft 41; body 411; sliding block 412; pressing plate 42; matching column 5;

[0034] sliding groove 6. DETAILED DESCRIPTION

[0035] Reference will now be made to Figures 1-10 The processing box 100 according to embodiments of the present application is described. Wherein, the processing box 100 is applied to a graphic image forming device as an example.

[0036] As Figures 1-10 shown, the processing box 100 according to embodiments of the present application, comprising a drum box 1, a developing box 2 and at least one locking assembly 3.

[0037] Specifically, the drum box 1 is formed with an accommodating groove 11, the drum box 1 has a first direction and a second direction perpendicular to each other. The developing box 2 is arranged in the drum box 1, the developing box 2 is formed with a matching groove 21, the matching groove 21 is opposite to the accommodating groove 11. The locking assembly 3 comprises an elastic member 31 and a locking member 32, the elastic member 31 is arranged in the accommodating groove 11, the locking member 32 is located between the elastic member 31 and the developing box 2 and is movably connected with the drum box 1, the elastic member 31 is switchable between a first state and a second state, the locking assembly 3 is switchable between a locking position and an unlocking position, wherein, the locking assembly 3 is switched from the unlocking position to the locking position, the developing box 2 is pushed down, the developing box 2 pushes the locking member 32, so that the elastic member 31 is switched from the second state to the first state, until the matching groove 21 is opposite to the accommodating groove 11, the locking member 32 is matched in the matching groove 21 under the action of the restoring force of the elastic member 31, the locking assembly 3 is switched from the locking position to the unlocking position, an action force is applied to one end of the locking member 32, so that the elastic member 31 is switched from the first state to the second state, until the locking member 32 is separated from the matching groove 21.

[0038] For example, in Figures 1-10In the example, the accommodating groove 11 is formed by recessing a part of the side wall of the drum box 1 near the side of the drum box 1 close to the developing box 2 towards the center of the drum box 1, and the matching groove 21 is formed by recessing a part of the side wall of the developing box 2 near the side of the developing box 2 close to the drum box 1 towards the center of the developing box 2. The elastic member 31 can be a spring or a torsion spring. When the elastic member 31 is a spring, the first state is that the spring is in a compressed state, and the second state is that the spring is in a non-compressed state. When the elastic member 31 is a torsion spring, the first state is that the torsion spring is in a deformed state, and the second state is that the torsion spring is in a non-deformed state.

[0039] When the locking assembly 3 is in the locked position, the elastic member 31 is in the second state, one end of the locking member 32 extends into the matching groove 21, the other end of the locking member 32 extends into the accommodating groove 11, and the elastic member 31 is placed between the locking member 32 and the side wall of the accommodating groove 11. When the locking assembly 3 is in the unlocked position, the elastic member 31 is in the first state, and the above-mentioned one end of the locking member 32 is out of the matching groove 21.

[0040] Specifically, taking the elastic member 31 as an example, when the locking assembly 3 switches from the locked position to the unlocked position, the user can operate the part of the locking member 32 extending out of the drum box 1 to compress the elastic member 31 to the first state, that is, to make the locking member 32 move away from the developing box 2, so that the locking member 32 is out of the matching groove 21, and thus the developing box 2 can be taken out of the drum box 1. When the locking assembly 3 switches from the unlocked position to the locked position, the developing box 2 is placed into the drum box 1 from top to bottom. At this time, the developing box 2 first contacts the locking member 32, and the developing box 2 is continuously pressed down to make the developing box 2 push the locking member 32 to move away from the developing box 2. The elastic member 31 is compressed by the locking member 32. When the accommodating groove 11 is opposite to the matching groove 21, the restoring force of the elastic member 31 pushes the locking member 32 to move towards the developing box 2, so that the above-mentioned other end of the locking member 32 matches the matching groove 21, thereby locking the developing box 2 on the drum box 1, so that the developing box 2 can be prevented from falling out of the drum box 1 during the process of carrying the processing box 100, and the service life of the developing box 2 is ensured.

[0041] According to the processing box 100 for the image forming device provided by the embodiment of the present application, the locking assembly 3 is arranged between the developing box 2 and the drum box 1. When the locking assembly 3 is in the locked position, the locking member 32 matches the accommodating groove 11 of the drum box 1 and the matching groove 21 of the developing box 2 respectively. When the locking assembly 3 is in the unlocked position, the locking member 32 is out of the matching groove 21. Thus, compared with the conventional processing box, the developing box 2 can be prevented from being separated from the drum box 1, the service life of the developing box 2 is improved, and the developing box 2 and the drum box 1 are simple to disassemble and convenient to operate.

[0042] According to some embodiments of the present application, the locking assembly 3 comprises a first fitting part 321 and a first mounting part 322 connected to each other, a free end of the first mounting part 322 extends in a first direction (for example, left-right direction in Figure 1 , and protrudes out of the drum cartridge 1, and the elastic member 31 is sleeved on the first mounting part 322. For example, in the examples of Figure 2 and Figure 3 , the first fitting part 321 and the first mounting part 322 are arranged in the first direction. The first mounting part 322 is located in the accommodating groove 11, and an end of the first mounting part 322 away from the developing cartridge 2 protrudes out of the drum cartridge 1 through the side wall of the drum cartridge 1, and the elastic member 31 is arranged in the accommodating groove 11. A user can pull the free end of the first mounting part 322 outward in the first direction, so that the locking member 32 compresses the elastic member 31, the first fitting part 321 is separated from the fitting groove 21, and the developing cartridge 2 can be taken out of the drum cartridge 1. Thus, while ensuring that the locking assembly 3 can be switched between the locked position and the unlocked position, the operation mode of the locking assembly 3 is simple, the user is convenient to operate, and the structure of the locking assembly 3 is simple and convenient to assemble.

[0043] According to some embodiments of the present application, the locking assembly 3 further comprises an operating member 33. The operating member 33 is sleeved on the free end of the first mounting part 322, and the operating member 33 comprises an operating part 331 and a connecting part 332 connected to each other, two ends of the operating part 331 protrude from two ends of the connecting part 332 in a second direction (for example, up-down direction in Figure 1 , and the second direction is perpendicular to the first direction. Referring to Figure 2 and Figure 3 , the operating member 33 is connected to an end of the first mounting part 322 away from the developing cartridge 2, for example, the connecting part 332 is formed with a through hole, an end of the first mounting part 322 is inserted into the through hole, and a threaded fastener such as a screw is connected to the first mounting part 322 through the operating part 331, so that the user can operate the locking assembly 3 through the operating member 33. Specifically, when it is needed to separate the developing cartridge 2 from the drum cartridge 1, the user can pull the operating member 33 away from the drum cartridge 1 through the operating part 331, at this time, the operating member 33 drives the locking assembly 3 to move in the same direction, so that the locking member 32 compresses the elastic member 31, the first fitting part 321 is separated from the fitting groove, and the developing cartridge 2 can be taken out of the drum cartridge 1. By protruding the two ends of the operating part 331 from the two ends of the connecting part 332 in the second direction, the area of the operating part 331 is increased, so as to increase the contact area of the operating part 331 with the user, and the user is convenient to operate the operating part 331.

[0044] Further, a side of the first fitting part 321 adjacent to the developing cartridge 2 has a first guide surface 3211, and the first guide surface 3211 extends obliquely toward the developing cartridge 2 in the second direction. As Figure 2 and Figure 3As shown, the first guide surface 3211 gradually approaches the developing cartridge 2 in the direction from top to bottom. When the developing cartridge 2 is installed, the developing cartridge 2 moves downward and contacts the first guide surface 3211, and then moves along the first guide surface 3211 and exerts a downward force on the first guide surface 3211, so that the locking member 32 moves away from the developing cartridge 2 and compresses the elastic member 31, for example, a spring, so that the elastic member 31 changes to the first state. When the developing cartridge 2 moves to the position where the accommodating groove 11 and the matching groove 21 are opposite to each other, the elastic member 31 generates a resetting force in the opposite direction, and the elastic member 31 switches from the first state to the second state, and at the same time, pushes the locking member 32 away from the elastic member 31, so that the first matching part 321 matches with the matching groove 21, thereby connecting the developing cartridge 2 with the drum cartridge 1, locking the developing cartridge 2 on the drum cartridge 1, and preventing the developing cartridge 2 from being separated from the drum cartridge 1. The first guide surface 3211 can play a guiding role to enable the developing cartridge 2 to be quickly installed into the drum cartridge 1.

[0045] According to some other embodiments of the present application, the locking member 32 comprises a second matching part 323 and a second mounting part 324 connected with each other, the free end of the second mounting part 324 extends in the second direction and protrudes out of the drum cartridge 1, the second mounting part 324 is rotatably connected with the drum cartridge 1, and the second matching part 323 is located between the elastic member 31 and the developing cartridge 2 in the first direction. Referring to Figures 4-7 , the second mounting part 324 and the second matching part 323 are arranged in the second direction, the second mounting part 324 extends in the second direction towards the outside of the drum cartridge 1, and the second mounting part 324 can rotate about a point intersecting with the drum cartridge 1. When the second mounting part 324 is pushed to rotate towards the developing cartridge 2, at this time, the second matching part 323 moves away from the developing cartridge 2, and the end of the second matching part 323 close to the developing cartridge 2 can be disengaged from the matching groove 21 of the developing cartridge 2, and the locking assembly 3 switches to the unlocking position. Thus, by pushing the second mounting part 324, the position of the locking member 32 can be changed, so that the locking assembly 3 switches between the locking position and the unlocking position, and the operation is simple and convenient.

[0046] Further, the locking member 32 further comprises a boss 325. The boss 325 is arranged on the side of the second matching part 323 close to the elastic member 31, and the elastic member 31 is sleeved on the boss 325. For example, in Figure 5 and Figure 7In the example shown in FIG. 6, the protrusion 325 is formed on the side of the second fitting part 323 away from the developing cartridge 2 in the first direction, so that the elastic member 31 can be connected with the locking member 32 through the protrusion 325, and the second fitting part 323 can compress the elastic member 31 when the second mounting part 324 is rotated. When the developing cartridge 2 is not installed in the drum cartridge 1, the protrusion 325 can prevent the elastic member 31 from being separated from the locking member 32, so that the locking member 32 can compress the elastic member 31 when moving away from the developing cartridge 2, and ensure that the locking assembly 3 can be switched between the locking position and the unlocking position.

[0047] Further, the side of the second mounting part 324 away from the developing cartridge 2 is provided with an extension part 3241 extending in the first direction. As shown in Figure 6 and Figure 7 , the extension part 3241 is formed on the end of the second mounting part 324 protruding out of the drum cartridge 1 and extending away from the developing cartridge 2, and the extension length of the extension part 3241 does not exceed the edge of the drum cartridge 1. When the user pulls the extension part 3241 in the first direction, the extension part 3241 rotates in the first direction, and at the same time drives the locking member 32 to rotate away from the developing cartridge 2, changes the fitting state between the second fitting part 323 and the fitting groove 21, and switches the locking member 32 between the locking position and the unlocking position. Therefore, by providing the extension part 3241, the user can easily operate the locking assembly 3.

[0048] According to some embodiments of the present application, the side of the second fitting part 323 adjacent to the developing cartridge 2 has a second guide surface 3231 extending away from the developing cartridge 2 in the second direction. As shown in Figure 5 and Figure 7 , the second guide surface 3231 gradually approaches the developing cartridge 2 in the direction from top to bottom. When the developing cartridge 2 is installed, the developing cartridge 2 moves downward and contacts the second guide surface 3231, then moves along the second guide surface 3231 and exerts a downward force on the second guide surface 3231, so that the second fitting part 323 rotates away from the developing cartridge 2 and compresses the elastic member 31. When the developing cartridge 2 moves to the position opposite to the accommodating groove 11 and the fitting groove 21, the elastic member 31 generates a restoring force in the opposite direction, the second fitting part 323 rotates away from the elastic member 31, and the second fitting part 323 is completely fitted with the fitting groove 21. The second guide surface 3231 can guide the developing cartridge 2 to be quickly installed in the drum cartridge 1.

[0049] In some optional embodiments, the locking assembly 3 is two, and the two locking assemblies 3 are respectively located on the two sides of the developing cartridge 2 in the first direction. For example, as shown in Figures 8-10In the example, the locking assembly 3 is arranged between the two sides of the first direction of the drum cartridge 1 and the developing cartridge 2, one part of the locking assembly 3 is matched with the accommodating groove 11 of the drum cartridge, and the other part of the locking assembly 3 is matched with the matching groove of the developing cartridge 2. By arranging the locking assembly 3 on both sides of the first direction of the developing cartridge 2, the locking effect on the developing cartridge 2 can be increased, and the developing cartridge 2 and the drum cartridge 1 are prevented from being separated, and the developing cartridge 2 is balanced under force.

[0050] Further, the processing cartridge 100 further comprises a dial lever 4. The dial lever 4 comprises a connecting shaft 41 and a pressing plate 42, the connecting shaft 41 is located in the accommodating groove 11, both ends of the connecting shaft 41 are slidably connected with the two locking members 32 respectively, and the pressing plate 42 is arranged at the middle part of the connecting shaft 41 and at least part of the pressing plate 42 extends out of the drum cartridge 1. As shown in Figure 9 , the connecting shaft 41 extends along the length direction of the drum cartridge 1 and penetrates the accommodating groove 11. The pressing plate 42 is formed by extending from the middle part of the connecting shaft 41, and the pressing plate 42 extends out of the drum cartridge 1, so that the pressing plate 42 can be pressed. When the pressing plate 42 is pressed downward, the connecting shaft 41 can move downward, and the two locking assemblies 3 are driven to move away from the developing cartridge 2, so that the locking assembly 3 is switched from the locking position to the unlocking position.

[0051] Further, the connecting shaft 41 comprises a body 411 and two sliding blocks 412, the two sliding blocks 412 are located at the axial two ends of the body 411, one of the sliding blocks 412 and the locking members 32 is provided with a matching column 5, and the other of the sliding blocks 412 and the locking members 32 is formed with a sliding groove 6, and the matching column 5 is slidably matched in the sliding groove 6. Wherein, the sliding block 412 is provided with the matching column 5, and the locking member 32 is formed with the sliding groove 6 (not shown in the figure); or, the locking member 32 is provided with the matching column 5, and the sliding block 412 is formed with the sliding groove 6 (as shown in Figure 10 ).

[0052] Referring to Figure 9 and Figure 10 , the sliding block 412 is provided with the sliding groove 6, and the locking member 32 is provided with the matching column 5, and the sliding groove 6 and the matching column 5 are matched, so that when the connecting shaft 41 is rotated, the sliding block 412 can drive the locking assembly 3 to move. Specifically, when the pressing plate 42 is pressed downward, the body 411 drives the sliding block 412 to move downward, so that the matching column 5 slides in the sliding groove 6 while driving the locking member 32 to move in the direction close to the connecting shaft 41, and the elastic member 31 is compressed, when the matching groove 21 is opposite to the accommodating groove 11, the restoring force of the elastic member 31 drives the locking member 32 to match with the matching groove 21 of the developing cartridge 2, so as to lock the developing cartridge 2 on the drum cartridge 1.

[0053] The other configurations and operations of the processing cartridge 100 according to the embodiment of the application are known to those skilled in the art, and will not be described in detail here.

[0054] In the description of the application, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0055] In the description of the application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium; it can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0056] In the description of the application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" 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 application. In this specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0057] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A process cartridge, characterized by, The drum box is formed with a receiving groove. The developing box is provided in the drum box, and the developing box is formed with a matching groove opposite to the receiving groove. At least one locking assembly includes an elastic member and a locking member, the elastic member is provided in the receiving groove, the locking member is located between the elastic member and the developing box and is movably connected with the drum box, the elastic member is switched between a first state and a second state, and the locking assembly is switched between a locking position and an unlocking position. During the switching of the locking assembly from the unlocking position to the locking position, the developing box pushes the locking member downward, the developing box pushes the locking member, and the elastic member is switched from the second state to the first state until the matching groove is opposite to the receiving groove, and the locking member is matched in the matching groove under the action of the restoring force of the elastic member. During the switching of the locking assembly from the locking position to the unlocking position, the locking member is subjected to an action force, the elastic member is switched from the first state to the second state until the locking member is separated from the matching groove. The locking member includes a first matching part and a first mounting part connected with each other, the free end of the first mounting part extends in a first direction and protrudes out of the drum box, and the elastic member is sleeved on the first mounting part. The side of the first matching part adjacent to the developing box has a first guide surface which extends obliquely toward the developing box in the second direction. Or the locking member includes a second matching part and a second mounting part connected with each other, the free end of the second mounting part extends in the second direction and protrudes out of the drum box, the second mounting part is rotatably connected with the drum box, and the second matching part is located between the elastic member and the developing box in the first direction. The side of the second matching part adjacent to the developing box has a second guide surface which extends obliquely toward the developing box in the second direction. The locking assembly further includes:

2. The process cartridge according to claim 1, wherein, An operating member is sleeved on the free end of the first mounting part, and the operating member includes an operating part and a connecting part connected with each other, and the two ends of the operating part protrude out of the two ends of the connecting part in a second direction, wherein the second direction is perpendicular to the first direction. The locking member further includes:

3. The process cartridge of claim 1, wherein, A boss is provided on the side of the second matching part adjacent to the elastic member, and the elastic member is sleeved on the boss. The side of the second mounting part away from the developing box is provided with an extension part which extends in the first direction.

4. The process cartridge of claim 3 wherein, There are two locking assemblies, and the two locking assemblies are respectively located on both sides of the developing box in the first direction.

5. The process cartridge according to any one of claims 1-4, wherein, Further comprising:

6. The process cartridge of claim 5 wherein, A dial lever includes a connecting shaft and a pressing plate, the connecting shaft is located in the receiving groove, the two ends of the connecting shaft are respectively slidably connected with the two locking members, and the pressing plate is provided on the middle part of the connecting shaft and at least part of the pressing plate protrudes out of the drum box. ​ 7. The process cartridge of claim 6 wherein, The connecting shaft comprises a body and two sliding blocks, the two sliding blocks are located at the axial two ends of the body, one of the sliding blocks and the locking piece is provided with a matching column, the other of the sliding blocks and the locking piece is formed with a sliding groove, and the matching column is slidably matched in the sliding groove.

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