Developing device and image forming apparatus

Abstract

The utility model relates to the technical field of printing equipment, and provides a developing device and image forming equipment. The developing roller is rotationally arranged in the powder bin; a photosensitive drum in contact with the developing roller and receiving the developer from the developing roller; a chip member; the chip seat is detachably mounted on one side wall of the powder bin along the axis direction of the developing roller, and is provided with a mounting clamping position which is provided with a first side and a second side which are oppositely arranged along a first direction; the at least two first buckling parts are arranged on the first side; the at least one second buckling part is positioned on the second side; wherein the chip component is provided with a first edge which is pressed against and buckled on each first buckling part and a second edge which is pressed against and buckled on each second buckling part, and the second buckling part is provided with an inclined surface which deviates towards the inner side of the mounting clamping position along the protruding direction of the second buckling part. According to the utility model, the chip is convenient to replace, and the dismounting structure does not influence the overall size of the chip component, thereby facilitating the miniaturization of the chip component.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field especially, relate to a kind of developing device and image forming equipment. BACKGROUND

[0002] Printer is commonly used office supplies, can integrate printing, copying, scanning and multiple functions such as.Equipment for forming image in the existing printer with laser imaging principle executes printing, developing box is one of the core components of the equipment for forming image, its inside is stored with developer, when developer is used up then need to execute replacement.And after developing box replacement, equipment for forming image will be identified to the developing box replaced, obtain the model information, capacity information etc.of developing box, so the chip for information exchange with equipment body is basically set on the existing developing box, send developing box relevant information using the chip, to adapt image forming device.

[0003] The chip on the developing box can continue to be used in general after use at present, so some manufacturers will recycle the chip, reset and reapply on new developing box to continue to use, especially for some recyclable filling developing box, developer initializes chip information after replenishment, but the initialization process needs to remove the chip from developing box, the existing developing box chip is usually fixed on developing box by screw connection mode, and it is troublesome to disassemble and assemble, and the screw can damage the chip, and a special screw hole needs to be provided on the chip, which occupies a large chip area, so that the size of the chip cannot be further reduced. SUMMARY

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present utility model is to provide a developing device and an image forming equipment to solve the problem of inconvenient disassembly in the prior art.

[0005] The utility model provides a developing device, apply to image forming equipment, include: powder storehouse, be equipped with the storage cavity for storing developer in the powder storehouse, developing roller, rotation setting in the powder storehouse and be located with the storage cavity intercommunication's connecting passage, photosensitive drum, with the developing roller contact and accept the developer from the developing roller, chip member, chip seat, can detachable installation in the powder storehouse along the shaft line direction of the developing roller one side wall, have: installation clamping position, its plane intersects the shaft line, and has the first side and the second side of opposite setting along the first direction, the first direction is located the plane, at least one first buckle part, each first buckle part is arranged on the first side, and protrudes towards the second side, at least one second buckle part, the second buckle part is located on the second side and protrudes towards the first side, wherein, the first edge of the chip member on has the first buckle part on each and the second edge of buckling the second buckle part, the second buckle part has the inclined surface along its protruding direction and offsets towards the inside of installation clamping position.

[0006] According to the developing device provided by the utility model embodiment, a chip seat structure is independently arranged, two buckle parts are arranged at both sides of the chip seat structure, and the two buckle parts are used for fixing corresponding two ends of the chip member. During installation of the chip, one end of the chip is first fixed by the plurality of first buckle parts, and then pressed towards the inside of the installation clamping position. During the pressing process, due to the structure of the inclined surface of the second buckle part, the other end of the chip member can push the protruding structure of the second buckle part along the inclined surface structure to generate corresponding elastic deformation, so that the chip is smoothly buckled into the installation clamping position, and the chip member is convenient to replace. The dismounting structure does not affect the overall size of the chip member, and is beneficial to miniaturization of the chip member. In addition, the first buckle part and the second buckle part are arranged in the direction perpendicular to the shaft line, so that the chip member is arranged in parallel along the side wall of the powder storehouse, the longitudinal size of the powder storehouse is shortened, and the structure does not cause part of the structure of the chip to be inclined and protruded. Therefore, during installation of the developing device in the image forming equipment, the chip does not interfere with the side wall in the installation direction, and damage to the chip can be effectively avoided.

[0007] In the preferred embodiment of the utility model, the at least one first buckle part includes two edge buckle blocks respectively located at two ends of the first side, and a projection of the second buckle part on the first side in the first direction is located between the two edge buckle blocks, and the second buckle part deviates from the midpoint position between the two edge buckle blocks.

[0008] In the preferred embodiment of the utility model, the installation clamping position includes a first limiting edge and a second limiting edge oppositely arranged in a second direction, and the two edge buckle blocks are respectively close to the first limiting edge and the second limiting edge, and the second direction is located in the plane and perpendicular to the first direction.

[0009] In the preferred embodiment of the utility model, the installation clamping position comprises a chip entrance on the second side and lower than the first limiting edge and the second limiting edge, and the second buckle part is located on the outside of the chip entrance.

[0010] In the preferred embodiment of the utility model, the box body is further provided, the powder bin is detachably connected to the box body, the powder bin comprises a shell and an end cover detachably connected to the shell and used for forming the one side wall, the first end of the photosensitive drum is rotationally arranged on the box body, the second end is rotationally connected to the end cover, the end cover is provided with a top piece pressed against the second end along the axis, and the chip seat is detachably connected to the side of the end cover away from the photosensitive drum and provided with a thimble abutting against the outer surface of the top piece.

[0011] The thimble is in the axial direction of the photosensitive drum.

[0012] In the preferred embodiment of the utility model, the developing device further comprises an electrical connection assembly, the electrical connection assembly comprises a first electrical connection piece sleeved on the top piece and pressed against the second end by the end cover, and the first electrical connection piece comprises an electrical connection end exposed on the outside of the end cover by extending to the external opening of the end cover.

[0013] In the preferred embodiment of the utility model, the end cover is provided with a seat mounting part, the outside wall of the seat mounting part is provided with a positioning recess, and the chip seat is provided with a positioning protrusion matched with the positioning recess.

[0014] In the preferred embodiment of the utility model, the installation clamping position further comprises a third limiting edge on the first side, a cut-in opening is formed between the third limiting edge and the edge buckle block, and the third limiting edge is provided with an inclined edge at the position close to the cut-in opening.

[0015] In the preferred embodiment of the utility model, the projection of the second buckle part on the first side along the first direction coincides with the third limiting edge and is staggered with the cut-in opening.

[0016] The above developing device provided by the utility model provides an image forming equipment, which comprises an equipment body and the developing device as described in the first aspect.

[0017] Other features and advantages of the utility model will be set forth in the subsequent description, and some will become apparent from the description, or will be learned from the practice of the utility model's technical solutions. The purpose and other advantages of the utility model can be realized and obtained by the structure and / or process specially pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structure schematic view of the image forming device provided by the embodiment of the present application is provided;

[0019] Figure 2 A structure schematic view of the first perspective of the developing device provided by the embodiment of the present application is provided;

[0020] Figure 3 A structure schematic view of the second perspective of the developing device provided by the embodiment of the present application is provided;

[0021] Figure 4 A structure schematic view of the developing device provided by the embodiment of the present application is provided; Figure 3 A partial enlarged schematic view of A in the figure;

[0022] Figure 5 A structure schematic view of the partial structure of the developing device provided by the embodiment of the present application is provided;

[0023] Figure 6 A structure schematic view of the developing device provided by the embodiment of the present application is provided; Figure 5 A partial enlarged schematic view of B in the figure;

[0024] Figure 7 A structure schematic view of the partial structure of the developing device provided by the embodiment of the present application is provided;

[0025] Figure 8 A structure schematic view of the chip seat provided by the embodiment of the present application is provided.

[0026] Explanation of the reference signs:

[0027] 1 device body, 11 paper box, 12 pickup assembly, 13 conveying assembly, 14 transfer assembly, 15 developing device, 16 scanning assembly, 17 fixing assembly, 18 paper discharging assembly;

[0028] 100 box body;

[0029] 200 powder bin, 210 storage cavity, 220 connecting passage, 230 shell, 240 first end cover, 250 second end cover, 251 first opening, 252 second opening, 253 seat mounting part, 253a positioning recess, 260 top piece;

[0030] 300 developing roller;

[0031] 400 photosensitive drum;

[0032] 500 chip member;

[0033] 600 chip seat, 610 mounting clamping, 611 first limiting edge, 612 second limiting edge, 613 third limiting edge, 613a inclined edge, 620 first buckle, 621 edge buckle, 630 second buckle, 631 inclined surface, 640 thimble, 650 positioning convex part, 660 chip inlet, 670 cut-in opening;

[0034] 700 stirring frame;

[0035] 800 powder feeding roller;

[0036] 900 charging roller;

[0037] 1000 electrical connection assembly, 1010 first electrical connection, 1011 electrical connection end, 1020 second electrical connection;

[0038] 1100 drive gear set. DETAILED DESCRIPTION

[0039] The embodiments of the present application will be described in detail below with reference to the drawings and examples, so that the process of how to apply technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented. It should be noted that these specific descriptions are only to make the present application more easily and clearly understood by those skilled in the art, and are not a limiting interpretation of the present application; for example, the first, second mentioned in the embodiments of the present application are not limited to the sequence, but only to express the sequence of the same or similar devices and mechanisms, and those skilled in the art can adjust the sequence for the convenience of expression or technical solution arrangement; moreover, the alternative schemes of some mechanisms are described in different embodiments, which can also be applied to other same or similar devices and mechanisms; and as long as there is no conflict, each embodiment in the present application and each feature in each embodiment can be combined, and the formed technical solutions are within the protection scope of the present application.

[0040] The technical solutions of the present application will be described in detail below with reference to the drawings and specific examples.

[0041] The embodiments of the present application provide an image forming device, which refers to Figure 1The device body 1 is provided with a paper conveying path, the paper box 11 is stacked with paper for printing, the pickup assembly 12 includes a pickup roller which is in contact with the stacked paper and sends the paper into the paper conveying path, the conveying assembly 13 includes a correction roller for correcting the position of the paper in the paper conveying path and a paper feed roller for conveying the paper in the paper conveying path, the developing device 15 forms an image composed of toner inside and transfers the image to the transfer assembly 14, the transfer assembly 14 transfers the image in the paper conveying path, after the paper obtains the image, it is further conveyed to the fixing assembly 17, the fixing assembly 17 fixes the image on the surface of the paper by heating, and the paper after printing is finally discharged to the outside of the device body 1 by the paper discharge assembly 18.

[0042] The scanning assembly 16 includes a laser emitting unit and an optical member for deflecting the laser emitted by the laser emitting unit, the optical member can be composed of a plurality of optical components, and the laser is deflected to the developing device 15 for the imaging process of the developing device 15. Referring to Figure 2 The developing device 15 includes a photosensitive drum having a photosensitive surface containing toner, and the laser is deflected to the photosensitive surface to form a latent electrostatic image, and the latent electrostatic image is used to form an image of toner.

[0043] Referring to Figures 2 to 8 The developing device includes a box body 100, a powder bin 200, a developing roller 300, a photosensitive drum 400, a chip member 500 and a chip seat 600, the powder bin 200 is detachably connected to the box body 100, the powder bin 200 is provided with a storage cavity 210 for storing the developing agent and a connecting channel 220 communicating with the storage cavity 210, the developing roller 300 is rotatably arranged in the powder bin 200 and located on the connecting channel 220, and is used to convey the developing agent to the outside of the connecting channel 220. The photosensitive drum 400 is rotatably arranged on the box body 100, and is arranged in a position such that the surface of the photosensitive drum 400 elastically contacts the developing roller 300, so as to be capable of receiving the developing agent from the developing roller 300.

[0044] Specifically, the developing device further comprises a stirring frame 700, a charging roller 900 and a powder feeding roller, the powder feeding roller and the stirring frame 700 are both rotationally arranged on the powder tank 200, wherein the stirring frame 700 is located in the storage cavity 210 and used to stir the developer in the storage cavity 210 and push the developer to the connecting channel 220, the powder feeding roller is located in the connecting channel 220 and in contact with the surface of the developing roller 300, and used to transfer the developer in the connecting channel 220 to the surface of the developing roller 300, and the developing roller 300 further transports the developer to the surface of the photosensitive drum 400. The charging roller 900 is rotationally arranged on the cartridge 100 and in contact with the surface of the photosensitive drum 400, and the contact position is located upstream of the developing roller 300 in the rotation direction of the photosensitive drum 400, so that the photosensitive drum 400 first contacts the charging roller 900 to be charged when rotating, and in the rotation process towards the developing roller 300, the scanning assembly emits laser to the surface of the photosensitive drum 400 to form an electrostatic latent image on the surface, and then the developing roller 300 transports the developer to the photosensitive drum 400, the electrostatic latent image attracts the developer to form an image, and finally the formed image is transferred from the photosensitive drum 400 to the external transfer assembly.

[0045] The powder tank 200 comprises a shell 230 and two end covers 240 and 250 which are detachably connected to the two ends of the shell 230 along the axial direction, the cartridge 100 has a connecting plate on one side, the first end cover 240 is detachably connected to the inside of the connecting plate along the axial direction, and the first end of the shell 230 is detachably connected to the first end cover 240, and the second end cover 250 is detachably fixed to the second end of the shell 230 and the cartridge 100 in the direction perpendicular to the axial direction, so that the powder tank 200 is detachably fixed to the cartridge 100 through the two end covers to form an integrated structure. It should be noted that all the detachable connections or fixations in the above structure can be screw connections, buckle connections or other detachable fixation modes.

[0046] Continuing to refer to Figure 2 , the chip seat 600 is detachably mounted on one side wall of the powder tank 200 along the axial direction of the developing roller 300, and the chip component 500 is detachably connected to the chip seat 600, so that the chip component 500 is in contact with the electric connection component close to the side wall to realize information exchange when the developing device is assembled in the equipment body. Specifically, the chip seat 600 has a mounting clamping position 610, at least one first buckle 620 and at least one second buckle 630, the mounting clamping position 610 is matched with the shape of the chip component 500, and the plane where the mounting clamping position 610 is located intersects with the axial line at an angle of 30° or more, and in the embodiment, the plane where the mounting clamping position 610 is located is perpendicular to the axial line, and specifically, the first plane P in Figure 2 , and has a first direction (such as Figure 4the first direction of the first side is located on the first plane, so that the first direction is perpendicular to the axial direction, so that the chip component 500 is kept in a vertical position relative to the axial direction when mounted on the mounting seat 610, and the chip component 500 does not protrude in the axial direction relative to the box body 100, so that the device body does not interfere with the chip component 500 in the mounting direction of the developing device (usually the mounting direction is perpendicular to one of the directions of the axial direction, such as Figure 2 the direction W in the device body does not interfere with the chip component 500 or interferes less, so as to avoid damage to the chip component 500. Each first clamping portion 620 is arranged on the first side and protrudes towards the second side to form a first clamping groove between the inner side of the mounting seat 610 and the first clamping portion 620, and the second clamping portion 630 is arranged on the second side and protrudes towards the first side to form a second clamping groove between the inner side of the mounting seat 610 and the second clamping portion 630. Thus, each first clamping portion 620 and the second clamping portion 630 are arranged opposite to each other on the chip seat 600 along the first direction, and the chip component 500 has the first edge and the second edge mentioned above, the first edge is clamped on each first clamping portion 620, and the second edge is clamped on the second clamping portion 630. The second clamping portion 630 has an inclined surface 631 offset towards the inner side of the mounting seat 610 along the protruding direction of the second clamping portion 630 (i.e., the direction towards the first side), as shown in the height direction of the mounting seat 610 (i.e., the direction S in Figure 4 the direction K in the height direction of the mounting seat 610), the inclined surface 631 is offset towards the direction close to the mounting seat 610.

[0047] According to the above structure, when the chip component 500 is mounted on the chip seat 600, the chip component 500 is tilted and inserted into the mounting seat 610 and the first edge is inserted into the first clamping groove formed by each first clamping portion 620, and then pressed downwards along the height direction to be clamped on the chip seat 600. At this time, the inclined surface 631 plays a guiding role for the pressing action, and in the guiding process, the inclined surface 631 drives the second clamping portion 630 to elastically deform away from the mounting seat 610 until the chip component 500 is assembled in place, and the second clamping portion 630 elastically returns to fix the second edge of the chip component 500. In this way, the chip component 500 only needs to be simply inserted and pressed to be detachably fixed on the chip seat 600, which is very convenient to disassemble and assemble, and the structure does not damage the chip component 500, does not need to occupy the chip space by punching, and shortens the size of the chip.

[0048] In one embodiment, referring to Figure 8The at least two first buckling portions 620 include two edge buckling blocks 621 respectively located at two ends of the first side, and the two edge buckling blocks 621 are close to the edge positions of the mounting clamping portion 610. The projection of the second buckling block on the first side is located between the two edge buckling blocks 621 in the first direction, so that the two edge buckling blocks 621 and the second buckling block form a triangular stable fixing point group, so as to stably fix the chip component 500 on the mounting clamping portion 610. In addition, the projection of the second buckling portion 630 on the first side deviates from the midpoint position between the two edge buckling blocks 621. When the chip is installed, the gripping point of the finger or gripping component is usually the middle position. Therefore, the second buckling portion 630 is arranged to be offset from the gripping point, so as to avoid the second buckling block affecting the placement and pressing steps of the chip component 500, and facilitate disassembly and assembly.

[0049] Further, the mounting clamping portion 610 includes a first limiting edge 611 and a second limiting edge 612 arranged opposite in the second direction (for example, direction V in Figure 8 , and the two edge buckling blocks 621 are respectively close to the first limiting edge 611 and the second limiting edge 612. The first limiting edge 611 and the second limiting edge 612 are used to limit the two side edges between the first edge and the second edge in the second direction, so as to provide a limiting force of the chip component 500 in the second direction when the chip component 500 is in the mounting clamping portion 610. Therefore, the two edge buckling blocks 621 are buckled at the two edge corners of the chip component 500, so as to ensure that the chip component 500 is compact in structure in the mounting clamping portion 610.

[0050] Continuing to refer to Figure 8 , the mounting clamping portion 610 includes a chip inlet 660 located on the second side and lower than the first limiting edge 611 and the second limiting edge 612, that is, the edge of the chip inlet 660 is lower than the first limiting edge 611 and the second limiting edge 612 in the height direction. The second buckling portion 630 is located outside the chip inlet 660. This structure can make the chip component 500 move from the chip inlet 660 to the first side and be buckled into each first buckling portion 620, without generating a large extrusion force on the first buckling portion 620. Meanwhile, the chip inlet 660 exposes the second edge of the chip component 500 on the second side, so as to provide a force point for removing the chip component 500 from the mounting clamping portion 610 in the height direction during disassembly of the chip component 500.

[0051] In another embodiment, referring to Figures 2 to 4, the second end cover 250 is an end cover for forming one side wall of the shell 230, the first end of the photosensitive drum 400 is rotatably arranged on the box body 100, and the second end is rotatably connected to the second end cover 250, which facilitates the installation process of the photosensitive drum 400. When the photosensitive drum 400 is installed, the first end is first inserted into the corresponding rotating hole of the box body 100, and then the second end cover 250 is installed and aligned with the second end of the photosensitive drum 400, without the need to generate additional elastic deformation to press the box body 100 or the shell 230, the installation is convenient and the structure is compact. The second end cover 250 has a top piece 260 pressed against the second end along the axis (which can be the axis of the developing roller 300 or the axis of the photosensitive drum 400, and the axis direction is parallel or the same), the chip seat 600 is detachably connected to the side of the end cover away from the photosensitive drum 400, and has a top pin 640 abutting against the outer edge of the top piece 260, so that when the second end cover 250 is detachably connected to the box body 100 and the shell 230, the top piece 260 is abutted against the second end of the photosensitive drum 400 at the outer side position in the axis direction, to ensure the position pre-tightening of the photosensitive drum 400 in the axis direction, and the top pin 640 provided by the chip seat 600 further provides the axis pre-tightening force on the photosensitive drum 400 in the axis direction of the photosensitive drum 400, to prevent the photosensitive drum 400 from loosening in the axis direction, and also to ensure the stable operation of the photosensitive drum 400.

[0052] Further referring to Figure 5 and Figure 6 , the developing device further comprises an electrical connection assembly 1000, the electrical connection assembly 1000 comprises a first electrical connection piece 1010 and a second electrical connection piece 1020, the first electrical connection piece 1010 is sleeved on the top piece 260 and is pressed against the second end of the photosensitive drum 400 by the second end cover 250, and comprises an electrical connection end 1011 extending to the outside opening of the second end cover 250 to be exposed outside the second end cover 250, wherein the outside opening on the second end cover 250 comprises a first opening 251 and a second opening 252, and the electrical connection end 1011 is located in the first opening 251, and the second electrical connection piece 1020 is sleeved on the charging roller 900, extends from between the shell 230 and the second end cover 250 and extends into the second opening 252 to be exposed outside the second end cover 250, and the electrical connection sheet in the device body can realize electrical contact with the first electrical connection piece 1010 and the second electrical connection piece 1020 outside the second end cover 250 and in the first opening 251 and the second opening 252, so that the photosensitive drum 400 and the second electrical connection piece 1020 are connected to the circuit.

[0053] In addition, the second end cover 250 has a seat mounting portion 253, the outer side wall of the seat mounting portion 253 has a positioning recess 253a, the chip seat 600 has a positioning protrusion 650 matched with the positioning recess 253a, when the chip seat 600 is mounted on the second end cover 250, the positioning recess 253a and the positioning protrusion 650 position the chip seat 600 on the second end cover 250, which avoids the mounting dislocation of the chip seat 600 and ensures the structural stability of the chip seat 600 on the second end cover 250.

[0054] Further, referring to Figure 4 and Figure 8 , the mounting clamping portion 610 further includes a third limiting edge 613 on the first side, the third limiting edge 613 and the edge clamping portion on one side thereof form a cut-in opening 670, the third limiting edge 613 has an inclined edge 613a at a position close to the cut-in opening 670, when the chip member is inserted into the first clamping portion 620, the chip member is inserted into the edge clamping portion close to the inclined edge 613a, and then buckled into another edge clamping portion, thereby completing the first edge fixation on the first side, and the cut-in opening 670 further provides a force point on the first side for fingers or other gripping components, in combination with the chip inlet 660 in the foregoing embodiment, the gripping points are provided on the first side and the second side, which makes it very convenient to take out the chip member 500 from the chip seat 600. Further, the opening size of the chip inlet 660 is greater than the opening size of the cut-in opening 670, in the case that the chip member 500 has limiting edges on three sides, the part of the chip member 500 in the cut-in opening 670 is taken as a reference point, and the chip member 500 is disassembled by applying force from the chip inlet 660 on the other side.

[0055] Wherein, the projection of the second clamping portion 630 on the first side in the first direction coincides with the third limiting edge 613 and is staggered with the cut-in opening 670, so that the third limiting edge 613 and the second clamping portion 630 relatively cooperate to fix the chip member 500 on the chip seat 600, and the force point on the first side is staggered with the second clamping portion 630 in the first direction, which avoids the influence of the second clamping portion 630 on the force application process when the chip member 500 is disassembled.

[0056] Referring to Figure 2 , the utility model embodiment further includes a drive gear set 1100, the drive gear set 1100 includes a drive gear for accepting driving force from the equipment body, the drive gear further transmits the driving force to the whole drive gear set 1100, and the drive gear set 1100 is used to drive the developing roller 300, the photosensitive drum 400, the charging roller 900, the powder feeding roller and the stirring frame 700 to rotate, so as to execute the imaging process.

[0057] Finally, it needs to be explained that the above description is only the best embodiment of the present application, and does not limit the present application in any form. Any person skilled in the art, without departing from the scope of the present application, can use the above disclosed methods and technical contents to make many possible changes and simple replacements of the present application, which are within the scope of the present application.

Claims

1. A developing device applied to an image forming apparatus, characterized by, The application relates to a developing device, comprising: a powder bin, which is internally provided with a storage cavity for storing a developer; a developing roller, which is rotationally arranged in the powder bin and located on a connecting channel in communication with the storage cavity; a photosensitive drum, which is in contact with the developing roller and receives the developer from the developing roller; a chip member; a chip seat, which is detachably mounted on one side wall of the powder bin along an axial direction of the developing roller and has: a mounting clamping position, which is intersected by an axial line and has a first side and a second side oppositely arranged along a first direction on the axial line; at least one first buckle part, each of which is arranged on the first side and protrudes towards the second side; at least one second buckle part, which is located on the second side and protrudes towards the first side; wherein the chip member is provided with a first edge buckled on each of the first buckle parts and a second edge buckled on the second buckle part, and the second buckle part is provided with an inclined surface deviated from an inner side of the mounting clamping position along a protruding direction of the second buckle part; the at least one first buckle part comprises two edge buckle blocks respectively located at two ends of the first side, a projection of the second buckle part on the first side along the first direction is located between the two edge buckle blocks, and the second buckle part deviates from a midpoint position between the two edge buckle blocks.

2. The developing device according to claim 1, wherein the mounting clamping position comprises a first limiting edge and a second limiting edge oppositely arranged along a second direction, the two edge buckle blocks are respectively close to the first limiting edge and the second limiting edge, and the second direction is located on the axial line and perpendicular to the first direction.

3. The developing device according to claim 2, wherein the mounting clamping position comprises a chip inlet located on the second side and lower than the first limiting edge and the second limiting edge, and the second buckle part is located on an outer side of the chip inlet.

4. The developing device according to claim 1, wherein the application further relates to a cartridge, wherein the powder bin is detachably connected to the cartridge, the powder bin comprises a shell and an end cover detachably connected to the shell and used for forming the one side wall, a first end of the photosensitive drum is rotationally arranged on the cartridge, a second end of the photosensitive drum is rotationally connected to the end cover, the end cover is provided with a top piece pressed against the second end along the axial line, and the chip seat is detachably connected to a side of the end cover away from the photosensitive drum and provided with a top pin pressed against an outer surface of the top piece. wherein the top pin is in the axial direction of the photosensitive drum.

5. The developing device according to claim 4, wherein the developing device further comprises an electric connection assembly, which comprises a first electric connection part sleeved on the top piece and pressed against the second end by the end cover, and the first electric connection part comprises an electric connection end exposed on an outer side of the end cover by extending to an external opening of the end cover.

6. The developing device according to claim 4, wherein the end cover is provided with a seat mounting part, an outer side wall of the seat mounting part is provided with a positioning recess, and the chip seat is provided with a positioning protrusion matched with the positioning recess.

7. The developing device according to claim 3, wherein the mounting clamping position further comprises a third limiting edge located on the first side, the third limiting edge and one of the edge buckle blocks form a cut-in opening, and the third limiting edge is provided with an inclined edge at a position close to the cut-in opening.

8. The developing device according to claim 7, wherein The second buckle part is projected on the first side along the first direction and coincides with the third limiting edge and is staggered with the cut-in opening.

9. An image forming apparatus characterized by comprising: The device comprises a device body and a developing device as claimed in any one of claims 1 to 8 installed in the device body.

Images