A driving component and a processing cartridge including the driving component

Abstract

The present invention relates to a driving component and a processing cartridge of a processing cartridge, the processing cartridge being detachably mounted in an electrophotographic apparatus. The driving component includes: a power receiving portion and a hub; the power receiving portion receives a rotational driving force by engaging with a driving head in the electrophotographic apparatus and transmits it to the hub. The power receiving portion is provided with a convex claw, the convex claw abuts and engages with a driving column of the driving head, and the convex claw is provided with an inclined pressing surface facing inwards around the rotation axis of the power receiving portion. After adopting the above technical solution, it solves the structural wear or fracture caused by structural interference between the driving component and the driving mechanism in the prior art, thereby prolonging the service life of the processing cartridge and the electrophotographic apparatus.

Description

Technical Field

[0001] The present invention relates to a driving component and a processing cartridge including the driving component.

Background Art

[0002] In the prior art, a processing cartridge can be detachably mounted on an electrophotographic apparatus. A driving mechanism for outputting a rotational driving force is provided in the electrophotographic apparatus. The processing cartridge generally includes a rotational force driving component, a developing unit, a developer, a toner control unit, and a housing for accommodating the above units. Additionally, according to different types of processing cartridge structures, a photosensitive unit, a charging unit, a cleaning unit, a stirring unit, etc. are additionally provided. The rotational force driving component of the processing cartridge is axially disposed at one end of the processing cartridge along the axis of the developing unit. After the rotational force driving component meshes with the driving mechanism in the electrophotographic apparatus, the rotational driving force is transmitted to the processing cartridge, and finally the rotational units (such as the developing unit, the photosensitive unit, the stirring unit, etc.) inside the processing cartridge are driven to rotate and participate in the developing work of the electrophotographic apparatus.

[0003] Before the electrophotographic apparatus performs the developing work (i.e., the so-called "printing"), the user needs to install the processing cartridge into the electrophotographic apparatus, and the rotational force driving component of the processing cartridge needs to contact and then mesh with the driving mechanism on the electrophotographic apparatus.

[0004] As Figure 1 、 Figure 2 shown, it is a schematic diagram of the driving mechanism 500 in the electrophotographic apparatus (not shown) contacting and meshing with the driving component 100 at one end of the processing cartridge. The driving component 100 moves along the installation direction Y1 (the installation direction Y1 is substantially perpendicular to the rotation axis L3 of the developing unit 10) towards the driving mechanism 500 as the processing cartridge is installed. When it moves to be substantially coaxial with the driving mechanism 500, the transmission pin 510 of the driving mechanism 500 abuts and meshes with the engaging claw 110 of the driving component 100 to transmit the rotational driving force from the driving mechanism 500 to the driving component 100. Finally, the driving component 100 transmits the driving force to each unit of the processing cartridge through gears.

[0005] As Figure 3As shown, before the driving component 100 comes into contact and meshes with the driving mechanism 500, when the processing cartridge is installed in the electrophotographic apparatus, both axial ends of the processing cartridge are relatively fixed by the inner wall or guide rails in the electrophotographic apparatus, so that the processing cartridge cannot move axially. Similarly, the driving mechanism 500 in the electrophotographic apparatus is also designed to only rotate around its own axis and cannot displace. Thus, before the driving component 100 comes into contact and meshes with the driving mechanism 500, there is a height difference H1 between the lowest point of the transmission pin 510 for transmitting the driving force and the highest point of the meshing claw 110. Therefore, there is a certain probability of structural interference between each other when the meshing claw 110 moves to mesh with the transmission pin 510. In the prior art, in order to reduce the mutual structural wear or interference phenomenon, the outer surfaces of the transmission pin 510 or the meshing claw 110 are generally provided with a certain inclination or smooth surface. At the same time, when the driving component 100 abuts against the driving mechanism 500, the meshing claw 110 can retract along the rotation axis L2 of the driving component 100 to avoid the above-mentioned structural interference.

[0006] Therefore, if there are multiple repeated meshing and separating actions between the above-mentioned driving mechanism 500 and the driving component 100 during the installation or disassembly of the processing cartridge, it is easy to cause wear or fracture of the structure of the driving mechanism 500 of the electrophotographic apparatus or the structure of the driving component 100 of the processing cartridge, resulting in difficulty or inability for the driving mechanism 500 and the driving component 100 to mesh with each other stably and transmit power. Thus, the electrophotographic apparatus or the processing cartridge cannot continue to be used normally, and the subsequent developing quality will also be affected to varying degrees.

Summary of the Invention

[0007] The present invention provides a driving component and a processing cartridge including the driving component to solve the structural interference phenomenon generated when the driving component comes into contact and meshes or disengages from the driving mechanism of the electrophotographic apparatus.

[0008] In order to solve the above technical problems, the technical solutions adopted are as follows:

[0009] A driving component of a processing cartridge, the processing cartridge is detachably installed in an electrophotographic apparatus, and the driving component includes: a power receiving portion and a hub; the power receiving portion receives the rotational driving force by meshing with a driving head in the electrophotographic apparatus and transmits it into the hub.

[0010] The power receiving portion is provided with a convex claw, the convex claw abuts and meshes with the driving column of the driving head, and the convex claw is provided with an inclined pressing surface inwardly around the rotation axis of the power receiving portion.

[0011] Preferably, when the power receiving portion disengages from the driving head, the inclined pressing surface of the convex claw abuts against the driving head to make the power receiving portion retract inwardly relative to the hub.

[0012] Preferably, when the power receiving part disengages from the drive head, the rotation axis of the power receiving part is parallel to the rotation axis of the hub or the rotation axis of the drive head.

[0013] Preferably, when the power receiving part disengages from the drive head, the rotation axis of the power receiving part changes from being substantially coincident with the rotation axis of the hub or the rotation axis of the drive head to being parallel to them.

[0014] Preferably, the angle between the inclined pressure surface and the rotation axis of the power receiving part is 30 degrees to 60 degrees.

[0015] Preferably, the inclined pressure surface is completely inclined inward or has a certain curvature.

[0016] Preferably, a gear for enabling the development unit to operate is further provided, and the power receiving part can slide relative to the vertical direction of the rotation axis of the hub; when observed from the axial end of the processing cartridge, the angle between the line formed by the rotation axis of the gear and the rotation axis of the hub and the sliding direction of the power receiving part is 30 degrees to 60 degrees.

[0017] Preferably, when the power receiving part is in contact engagement with the drive head, the drive head abuts against the power receiving part to cause the power receiving part to retract inward relative to the hub.

[0018] Preferably, when the power receiving part is in contact engagement with the drive head, the rotation axis of the power receiving part is parallel to the rotation axis of the hub.

[0019] Preferably, the drive assembly further includes an end cap and a sliding member. An inclined sliding surface is provided inside the end cap, and an inclined sliding surface is provided on the surface of the sliding member; when the power receiving part disengages from the drive head, the inclined sliding surface of the end cap abuts against the inclined sliding surface of the sliding member to cause the power receiving part to retract inward relative to the hub.

[0020] Preferably, when the power receiving part is in contact engagement with the drive head, the inclined sliding surface of the end cap abuts against the inclined sliding surface of the sliding member to cause the power receiving part to retract inward relative to the hub.

[0021] Preferably, the power receiving part is provided with an annular outer inclined surface outwardly. When the power receiving part is in contact engagement with the drive head, the outer inclined surface abuts against the drive head and is pressed to cause the power receiving part to retract inward relative to the hub.

[0022] A processing cartridge is provided with any one of the above drive assemblies.

[0023] After adopting the above technical solution, the structural wear or fracture caused by structural interference between the driving component and the driving mechanism in the prior art is solved, thereby prolonging the service life of the processing cartridge and the electrophotographic apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 、 Figure 2 is a schematic structural diagram of the driving component of the processing cartridge in the prior art and the driving mechanism of the electrophotographic apparatus.

[0026] Figure 3 is a schematic diagram of the actions before the driving component and the driving mechanism come into contact and engage in the prior art.

[0027] Figure 4 is a sectional structural diagram of the processing cartridge in this embodiment.

[0028] Figure 5 、 Figure 6 is a schematic structural diagram of the driving component of the processing cartridge in the first embodiment, where Figure 6 the arrow in indicates the rotation direction of the driving head.

[0029] Figure 7 is a structural diagram of the pressing member of the driving component in the first embodiment.

[0030] Figure 8 is a structural diagram of the sliding member of the driving component in the first embodiment.

[0031] Figure 9 is a partial sectional view of the end cap of the driving component in the first embodiment.

[0032] Figure 10 、 Figure 11 、 Figure 12 is a schematic diagram of the actions of the power receiving part in the first embodiment, where Figures 10 - 12 the arrow in indicates the moving direction of the power receiving part.

[0033] Figure 13 、 Figure 14 is a schematic diagram of the relative expansion and contraction actions of the power receiving part in the first embodiment, where Figure 13 、 Figure 14 the arrow in indicates the expansion and contraction direction of the power receiving part.

[0034] Figure 15 , Figure 16a , Figure 16b is a schematic structural view of the power receiving portion in the first embodiment.

[0035] Figure 17 is a schematic view of the processing cartridge moving towards the drive head along the direction Y1 in the first embodiment.

[0036] Figure 18a , Figure 18b , Figure 19 is a schematic view of the power receiving portion of the processing cartridge in the first embodiment coming into contact and engaging with the drive head of the electrophotographic apparatus.

[0037] Figure 20 is a schematic view of the processing cartridge continuing to move along the direction Y1 in the first embodiment.

[0038] Figures 21 to 23b is a schematic view of the power receiving portion of the processing cartridge disengaging from the drive head of the electrophotographic apparatus in the first embodiment.

[0039] Figures 24a to 24c is a schematic structural view of the inclined pressure surface of the convex claw of the processing cartridge in the first embodiment.

[0040] Figures 25a to 25b is a schematic view of the sliding direction of the power receiving portion of the processing cartridge in the first embodiment, wherein, Figures 25a to 25b the arrow in indicates the sliding direction of the power receiving portion.

[0041] Figures 26 to 28 is a schematic structural view of the power receiving portion of the processing cartridge in the second embodiment.

[0042] Figure 29 is a schematic view of the operation of the power receiving portion of the processing cartridge in the second embodiment.

[0043] Figure 30 is a schematic structural view of the power receiving portion of the processing cartridge in the second embodiment.

Detailed Description of the Embodiment

[0044] For a better understanding of the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0045] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0046] In the present invention, the axial direction of the processing cartridge is coaxial or parallel to the rotation axis of the developing unit or the transfer unit.

[0047] (Processing Cartridge)

[0048] As Figure 4 and 5 shown, it is a schematic structural diagram of the processing cartridge B. The processing cartridge B includes a developing cartridge b100 in which a developer T is stored. A powder control unit 20 is fixedly provided on the surface of the developing cartridge b100, and a developing unit 10 is rotatably mounted on the developing cartridge b100. A driving assembly 200 is mounted on one end of the developing cartridge b100 of the processing cartridge B.

[0049] In addition, according to different similar structures of the processing cartridge B, a housing 91 and an internally provided cleaning unit 60, a photosensitive unit 40, and a charging unit 50 are additionally provided.

[0050] Embodiment 1

[0051] (Driving Assembly)

[0052] As Figures 5 to 10 shown, the driving assembly 200 includes a power receiving portion 210, a hub 270, a pressing member 220, a sliding member 230, an elastic member 250, and a connecting member 260. The power receiving portion 210 is provided with a connecting portion 216, a pawl 211 provided at one end of the connecting portion 216 for abutting and engaging with a driving column 910 of a driving head 900, a notch 215 provided at the other end of the connecting portion 216, and a card slot and a limiting surface are further provided in the middle of the connecting portion 216; the pressing member 220 is a hollow frame structure, a sliding surface 224 is provided on the side surface of the pressing member 220, and a pair of sliders 223 are provided inside the pressing member 220; the sliding member 230 is a trapezoidal structure with a narrow upper part and a wide lower part. The upper surface of the sliding member 230 abuts against the limiting surface of the power receiving portion 210. An inclined sliding surface 231 is provided on the side surface of the sliding member 230, sliding grooves 232 are provided on both side surfaces, and a through hole 236 is provided in the sliding member 230; a through port 299 is provided in the middle of an end cap 290, an inclined sliding surface 291 and a vertical sliding surface 294 are provided inwardly around the through port 299, and the inclined setting of the inclined sliding surface 291 makes the through port 299 have a structure with a narrow outer part and a wide inner part on the end cap 290 (as Figure 9 in which W2 is greater than W1); the hub 270 is a cylindrical structure and has an inner cavity 272. A gear surface for transmitting driving force is provided on the surface of the hub 270. A bottom surface 275 is provided at the bottom of the inner cavity 272, and a pair of limiting sliding grooves 273 are further provided in the inner cavity 272. The limiting sliding grooves 273 are formed by two convex blocks and a sliding groove 273a is provided in the middle; the connecting member 260 is a crank-shaped structure with a protrusion in the middle.

[0053] As Figure 6As shown, the assembly relationship between the above-mentioned components is as follows: The pressing member 220 is in translational sliding fit with the sliding grooves 232 on both sides of the surface of the sliding member 230 through the built-in slider 223; the power receiving portion 210 passes through the through hole 236 of the sliding member 230 and the pressing member 220 through the connecting portion 216, and the limiting surface of the power receiving portion 210 abuts against the upper surface of the sliding member 230; a buckle 219 is embedded in the card slot of the power receiving portion 210 extending from the sliding member 230 to axially fix the power receiving portion 210 on the sliding member 230; the connecting member 260 passes through the notch 215 at one end of the connecting portion 216, and the middle protruding portion of the connecting member 260 is located in the notch 215; the elastic member 250 is placed in the inner cavity 272 of the hub 270, and both ends of the connecting member 260 are placed in the limiting sliding grooves 273 built in the hub 270. One end of the elastic member 250 abuts against the bottom surface 275 of the inner cavity 272, and the other end abuts against both ends of the connecting member 260. After the above-mentioned components are mutually matched, they can be integrally assembled into one side of the processing cartridge C. The hub 270 can transmit the driving force to the gear 15 and make the developing unit 10 operate. The end cover 290 covers the sliding member 230, and the power receiving portion 210 extends outwards from the through port 299 of the end cover 290. The inclined sliding surface 231 of the sliding member 230 abuts against the inclined sliding surface 291 provided in the end cover 290, and the sliding surface 224 of the pressing member 220 is in perpendicular sliding fit with the sliding surface 294 of the end cover 290. Finally, the end cover 290 can be fixed to one side of the processing cartridge C by means of screws, adhesives, welding, etc. to prevent the driving assembly 200 from disengaging from the processing cartridge C.

[0054] According to the above, one end of the elastic member 250 abuts against the connecting member 260 and both ends of the connecting member 260 are located in the limiting sliding grooves 273, enabling the connecting member 260 to perform elastic movement along the limiting sliding grooves 273. The power receiving portion 210 connected to the connecting member 260 can also perform elastic telescopic movement relative to the hub 270. Similarly, due to the connection between the sliding member 230 and the power receiving portion 210, and the connection between the pressing member 220 and the sliding member 230, the sliding member 230 and the pressing member 220 can also move together with the telescopic movement of the power receiving portion 210. By covering the sliding member 230 with the end cover 290, due to the elastic force exerted by the elastic member 250, the inclined sliding surface 231 of the sliding member 230 abuts against the inclined sliding surface 291 to limit the extension amount of the power receiving portion 210 in the driving assembly 200, enabling the power receiving portion 210 subjected to the elastic acting force to perform axial telescopic movement along the axial direction.

[0055] As Figures 10 to 11As shown in the figure, the power receiving part 210 in the driving component 200 can achieve the following operation process (in order to facilitate understanding of the operation process of the power receiving part 210 in the wheel hub 270, some components in the driving component 200 are not shown): (1) The power receiving part 210 can perform telescopic movement along the axial direction through the elastic force of the elastic part 250; (2) As Figure 10 shown, when viewed from the length direction of the connecting part 260, due to the assembly and cooperation of the power receiving part 210 with the connecting part 260 through the notch 215, the power receiving part 210 can slide left and right along the length direction of the connecting part 260, that is, the power receiving part 210 can achieve a certain distance of parallel displacement in the wheel hub 270 relative to the rotation axis of the wheel hub 270; (3) As Figure 11 and Figure 12 shown, when viewed from the end face direction of the connecting part 260, since the connecting part 260 is a crank-shaped structure with a middle protrusion, and both ends of the connecting part 260 are placed in the sliding groove 273, the power receiving part 210 can be connected and cooperated with the connecting part 260 through the notch 215, and perform left and right yaw movement by means of the crank structure with a middle protrusion of the connecting part 260, that is, the power receiving part 210 can achieve a certain distance of parallel displacement in the wheel hub 270 relative to the rotation axis of the wheel hub 270.

[0056] As Figures 12 to 14 shown, after the above-mentioned driving component 200 is assembled, when the driving component 200 is not affected by an external force, the elastic force of the elastic part 250 keeps the power receiving part 210 in a state of protruding outward. At this time, the power receiving part 210 is in the initial position; and when the power receiving part 210 is pressed down by an external force and moves downward, it simultaneously drives the pressing part 220 and the sliding part 230 to move downward along the axial direction and compress the elastic part 250. At this time, the power receiving part 210 is in the retracted position. The height from the top end of the power receiving part 210 in the initial position to the outer surface of the end cover 290 is greater than the height from the top end of the power receiving part 210 in the retracted position to the outer surface of the end cover 290.

[0057] As Figures 15 to 16bAs shown, at the upper end of the power receiving part 210 is a disc-shaped power receiving port. An annular outer inclined surface 212 is provided outwardly on the power receiving port. On the outer inclined surface 212 are a pair of convex claws 211 protruding outwardly along the axial direction. An inner inclined surface 213 is provided inwardly in the power receiving port around the rotation axis of the power receiving part 210; a pair of convex claws 211 are provided with inclined pressing surfaces 211a facing inwardly relative to the rotation axis of the power receiving part 210. The inner inclined surface 213 and the inclined pressing surface 211a are integrally connected and smoothly transitioned; in order to achieve the smooth transition between the inner inclined surface 213 and the inclined pressing surface 211a for facilitating their being pressed, the convex claws 211 are fixedly arranged on the power receiving part 210 without relative movement (such as telescoping or swinging), or the convex claws 211 and the power receiving part 210 are integrally formed (such as integrally injection molded or processed).

[0058] (The power receiving part of the processing cartridge contacts and engages with the drive head of the electrophotographic apparatus)

[0059] As Figures 17 to 19 shown, also referring to Figures 1 to 3 shown, after the processing cartridge C is installed in the electrophotographic apparatus, the motor in the electrophotographic apparatus pushes the whole processing cartridge C to move along the direction Y1 towards the drive head 900, and the power receiving part 210 moves accordingly and approaches the drive head 900. During the process of the power receiving part 210 contacting and engaging with the drive head 900, since the drive head 900 is in a state of continuous rotation and the stop position of the convex claws 211 of the power receiving part 210 is uncertain, the drive head 900 and the power receiving part 210 will present the following two engaging processes: (1) As Figure 18a and Figure 18b shown, during the process of contact and engagement, when the drive column 910 of the drive head 900 does not form a structural interference with the convex claws 211 of the power receiving part 210, the semi-circular surface 915 at the bottom end of the drive head 900 abuts against the outer inclined surface 212 of the power receiving part 210. As the processing cartridge C is continuously pushed, the outer inclined surface 212 is pressed by the semi-circular surface 915 of the drive head 900 to make the power receiving part 210 retract inwardly to avoid further structural interference. When the processing cartridge C is pushed in place, the outer inclined surface 212 no longer abuts against the semi-circular surface 915. At this time, the power receiving part 210 is pushed outward by the elastic force of the elastic member 250 to engage with the drive head 900 and receive the rotational driving force. (2) As Figure 19 shown, when the convex claws 211 form a structural interference with the drive column 910 during the process of contact and engagement (the interference point can be as Figure 19As shown by the arrow in the upper left corner, as the processing cartridge C continues to move, the inclined sliding surface 291 of the end cap 290 that moves therewith abuts against the inclined sliding surface 231 of the sliding member 230 and generates a downward pressure to cause the sliding member 230 to retract inward. The power receiving portion 210 that is fixedly coupled to the sliding member 230 also moves downward as the sliding member 230 retracts. At this time, as the power receiving portion 210 retracts inward, its convex claw 211 can avoid structural interference with the drive post 910. When the processing cartridge C is pushed into place, the power receiving portion 210 is elastically extended by the elastic member 250 to engage with the drive head 900 and receive the rotational driving force.

[0060] During the above contact and engagement process, the rotation axis of the power receiving portion 210 has a first position parallel to the rotation axis of the drive head 900 or the rotation axis of the hub 270, and a second position substantially coincident with the rotation axis of the drive head 900 or the rotation axis of the hub 270.

[0061] (The power receiving portion of the processing cartridge is disengaged from the drive head of the electrophotographic apparatus)

[0062] As Figures 20 to 23b shown, after the power receiving portion 210 and the drive head 900 complete the transmission of the driving force, the power receiving portion 210 is disengaged from the drive head 900. During the disengagement process of the two, the entire processing cartridge C continues to move along the direction Y1. Similarly, since the drive head 900 is in a continuously rotating state, the disengagement position of the convex claw 211 from the drive post 910 is uncertain, and the drive head 900 will present the following two disengagement processes with the power receiving portion 210: (1) As Figures 22a to 22cAs shown, in the process of disengagement, when a pair of protruding claws 211 of the power receiving part 210 are in a front-and-rear state relative to the moving direction Y1 (i.e., one protruding claw is in front of the other protruding claw and the other protruding claw is in the back), as the processing box C continues to move, the power receiving part 210 is also driven to move, while the drive head 900 does not shift, that is, the semicircular surface 915 of the drive head 900 forms a structural abutment with the protruding claws 211 at the rear, and the inner bevel 213 of the power receiving part 210 first forms abutment with the semicircular surface 915 of the drive head 900. Due to the oblique sliding abutment between the two, the inner bevel 213 is in the semicircular surface 915 of the drive head 900. Under the action of the abutting force of the surface 915, the power receiving part 210 is pressed downward, so that the power receiving part 210 retracts inward along its rotation axis relative to the end cover 290. As the processing box C moves further, the semicircular surface 915 of the drive head 900 that abuts against the inner inclined surface 213 further transitions to abut against the inclined pressure surface 211a of the next cam 211. Due to the abutment and pressure of the inclined pressure surface 211a, the power receiving part 210 continues to be pressed and retracts inward. Finally, due to the further movement of the processing box C and the further retraction of the power receiving part 210, the cam 211 no longer abuts against the semicircular surface 915 of the drive head 900, and the two are disengaged. (2) As shown in FIG. Figure 23a and Figure 23b As shown, when a pair of claws 211 of the power receiving part 210 are in side by side relative to the moving direction Y1 (i.e., the pair of claws are not in a front-and-rear position), relative to the above-mentioned disengagement process (1), the semicircular surface 915 of the drive head 900 only needs to form abutment with the inner bevel 213. After the inner bevel 213 is pressed downward to cause the power receiving part 210 to retract inward along its rotation axis relative to the end cover 290, the power receiving part 210 can be disengaged from the drive head 900.

[0063] In addition, if Figure 21 As shown, since the power receiving part 210 is in a certain tight fit engagement state during the disengagement process with the driving head 900, when the processing box C drives the hub 270 and the end cover 290 to move, the movement of the hub 270 can cause the inclined sliding surface 291 provided therein to generate a pressure force F and press on the inclined sliding surface 231 of the sliding member 230 to make the sliding member 230 retract inward, and the power receiving part 210 fixedly matched with the sliding member 230 also moves downward with the retraction of the sliding member 230, and the rotation axis of the power receiving part 210 and the rotation axis of the hub 270 always remain substantially parallel during the movement. In this way, the inclined sliding surface 291 of the end cover 290 presses on the inclined sliding surface 231 of the sliding member 230, which can also assist the power receiving part 210 to retract inward relative to the end cover 290 and disengage from the driving head 900.

[0064] During the above disengagement process, the rotating shaft of the power receiving portion 210 has a second position that is substantially coincident with the rotating shaft of the drive head 900 or the rotating shaft of the hub 270, and a third position that is parallel to the rotating shaft of the drive head 900 or the rotating shaft of the hub 270.

[0065] In addition, as Figure 24a shown, to better achieve the disengagement of the power receiving portion 210 from the drive head 900, there is an angle R1 between the inwardly disposed inclined pressure surface 211a of the convex claw 211 and the rotating shaft L1 of the power receiving portion 210, and this angle R1 is between 30 degrees and 60 degrees. In this way, it not only ensures that when the convex claw 211 of the power receiving portion 210 abuts and engages with the drive column 910 of the drive head 900, it is not easy to "slip" and disengage (unable to smoothly receive the driving force), but also ensures that when the inclined pressure surface 211a of the power receiving portion 210 abuts and is pressed against the semi-circular surface 915 of the drive head 900, the power receiving portion 210 is pressed and indented inward to achieve disengagement from the drive head 900. The inclined pressure surface 211a can be a surface that is completely inclined inward, that is, the locus of the inclined pressure surface 211a is a conical surface locus (that is to say, the locus equation of the inclined pressure surface 211a conforms to the locus equation of the conical surface), or the inclined pressure surface 211a is a plane, as Figure 24b shown, or it can be a surface with a curvature, as Figure 24c shown. If the inclined pressure surface 211a has a certain curvature, the angle formed between the tangent line (dashed line in the figure) formed by the inclined pressure surface 211a in the area where the convex claw 211 abuts and engages with the drive column 910 (the grid line part) and the rotating shaft of the power receiving portion 210 is the above-mentioned R1 (that is, between 30 degrees and 60 degrees).

[0066] In addition, as Figure 25a and Figure 25b shown, to better achieve the contact engagement and disengagement processes between the power receiving portion 210 and the drive head 900, when observed from the direction of one axial end of the processing cartridge C, there is an angle R2 between the connecting line (dashed line L4) formed by the rotating shafts of the gear 15 of the developing unit 10 and the hub 270 and the direction in which the power receiving portion 210 slides on the end cap 290 through the sliding member 230, that is, the direction in which the power receiving portion 210 slides in a direction perpendicular to the rotating shaft of the hub 270 (the formed dashed line L5), and the angle R2 is between 25 degrees and 40 degrees. In this way, it ensures the smoothness of the power receiving portion 210 during the processes of abutting engagement and disengagement with the drive head 900.

[0067] Embodiment 2

[0068] In this embodiment, the difference from the first embodiment lies in the design of the pressing member 220 and the sliding member 230, aiming to further enable the power receiving portion 210 to better disengage from the driving head 900. The idea of the present invention will be described through the following embodiments.

[0069] In the first embodiment, the pressing member 220 and the sliding member 230 are connected by a keyway, and the sliding member 230 can slide relative to the pressing member 220. When an external force acts on the power receiving portion 210, the power receiving portion 210 and the sliding member 230 are guided by the keyway to make a parallel offset relative to the axis of the hub 270.

[0070] For the preferred embodiment of this embodiment, see Figures 26 to 28 , the sliding member 230A and the pressing member 220A are connected by a connecting member. Preferably, the connecting member is set as a crank member, see the connecting member 230c shown in Figures 26 to 28 . The sliding member 230A is set as a split structure for facilitating the installation of the connecting member 230c. At the same time, the end of the connecting member 230c is connected to the pressing member 220A, and the power receiving portion 210 is arranged to pass through the sliding member 230A and the pressing member 220A. Further, the connecting member 230c and the sliding member 230A and the pressing member 220A are in shaft-hole fit. When an external force acts on the power receiving portion 210, the power receiving portion 210 can make a movement of parallel offset relative to the axis of the hub 270. At the same time, the connecting member 230c swings when an external force acts on the power receiving portion 210, see Figure 29 . Since the connecting member 230c and the pressing member 220A and the sliding member 230A are in shaft-hole fit, and the connecting member is of a crank structure, when an external force acts on the power receiving portion 210, the power receiving portion 210 can smoothly make an offset. At this time, the sliding member 230A moves together with the connecting member 230c and slides relative to the pressing member 220A.

[0071] In this embodiment, the drive assembly 200 includes a power receiving portion 210, a hub 270, a pressing member 220A, a sliding member 230A, an elastic member 250, and a connecting member 260. Among them, the sliding member 230A and the pressing member 220A are connected by a connecting member 230c.

[0072] Figure 28A cross-sectional view of the drive assembly assembled to the processing cartridge. The power receiving portion 210 is disposed on the hub 270 after passing through the slider 230A and the pressing member 220A, and the drive assembly is restricted to the processing cartridge housing by the end cap 290. An elastic member 250 is further disposed between the power receiving portion 210 and the hub 270. The elastic member 250 exerts an elastic force on the power receiving portion and, when the power receiving portion is not subject to an external force, returns the power receiving portion to its initial position.

[0073] Of course, if it is only necessary to achieve a relative parallel offset between the axis of the power receiving portion 210 and the hub 270, one end of the connecting member may be connected to the power receiving portion and the other end may be connected to a part of the processing cartridge housing that is relatively fixed, such as being connected to the aforementioned end cap 290.

[0074] In this embodiment, it can also be seen that Figure 30 , the connecting member 230c is in the form of a single leg, but at least two connecting members are required, such as the connecting member 230c1 and the connecting member 230c2, and the connecting member 230c1 and the connecting member 230c2 need to be staggered from each other to maintain the balance of the slider 230a / 230b.

[0075] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A driving assembly of a processing cartridge, the processing cartridge being detachably mounted in an electrophotographic apparatus, the driving assembly comprising: Power receiving part, wheel hub; the power receiving part receives the rotational driving force by engaging with the driving head in the electrophotographic device and transmits it to the wheel hub, characterized in that, The driving assembly further includes a pressing member, a sliding member, an elastic member, a connecting member and an end cap. The pressing member is in translational sliding fit with the sliding grooves on both sides of the surface of the sliding member through the built-in slider. The power receiving part passes through the through hole of the sliding member and the pressing member through the connecting part, and the limiting surface of the power receiving part abuts against the upper surface of the sliding member. The end cap covers the sliding member, and a buckle is embedded in the card slot of the power receiving part extending from the sliding member to axially fix the power receiving part on the sliding member; The connecting part of the power receiving part extends into the inner cavity of the wheel hub, and both ends of the connecting member are placed in the limiting sliding grooves built in the wheel hub. The connecting member is a crank-shaped structure with a protrusion in the middle; The elastic member is arranged in the inner cavity, and one end of the elastic member abuts against the bottom surface of the inner cavity, and the other end abuts against both ends of the connecting member; The power receiving part is provided with a convex claw, and the convex claw abuts and engages with the driving column of the driving head. The convex claw is provided with an inclined pressing surface inward around the rotation axis of the power receiving part; When the power receiving part disengages from the driving head, the inclined pressing surface of the convex claw abuts against the driving head to make the power receiving part retract inward relative to the wheel hub.

2. The driving component of the processing cartridge according to claim 1, characterized in that, When the power receiving part disengages from the driving head, the rotation axis of the power receiving part is parallel to the rotation axis of the wheel hub or the rotation axis of the driving head.

3. The driving component of the processing cartridge according to claim 2, characterized in that When the power receiving part disengages from the driving head, the rotation axis of the power receiving part changes from being basically coincident with the rotation axis of the wheel hub or the rotation axis of the driving head to being parallel to each other.

4. The driving assembly of the processing cartridge according to claim 1, wherein The angle between the inclined pressing surface and the rotation axis of the power receiving part is 30 degrees to 60 degrees.

5. The driving assembly of the processing cartridge according to claim 4, wherein The trajectory of the inclined pressing surface is a conical surface trajectory, or the inclined pressing surface is a plane, or the inclined pressing surface has a certain radian.

6. The driving component of the processing cartridge according to claim 1, wherein, There is also a gear for driving the developing unit to operate. The power receiving part can slide in a direction perpendicular to the rotation axis of the wheel hub; when observed from the axial end of the processing cartridge, the included angle between the line formed by the rotation axis of the gear and the rotation axis of the wheel hub and the sliding direction of the power receiving part is 30 degrees to 60 degrees.

7. The driving assembly of the processing cartridge according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that, When the power receiving part comes into contact and engages with the driving head, the driving head abuts against the power receiving part to make the power receiving part retract inward relative to the wheel hub.

8. The driving assembly of the processing cartridge according to claim 7, wherein, When the power receiving part comes into contact and engages with the driving head, the rotation axis of the power receiving part is parallel to the rotation axis of the wheel hub.

9. The driving component of the processing cartridge according to claim 1 or 2 or 3 or 4 or 5 or 6 or 8, characterized in that The end cap is provided with an inclined sliding surface, and the surface of the sliding member is provided with an inclined sliding surface; when the power receiving part disengages from the driving head, the inclined sliding surface of the end cap abuts against the inclined sliding surface of the sliding member to make the power receiving part retract inward relative to the wheel hub.

10. The driving component of the processing cartridge according to claim 9, characterized in that, When the power receiving part comes into contact and engages with the driving head, the inclined sliding surface of the end cap abuts against the inclined sliding surface of the sliding member to make the power receiving part retract inward relative to the wheel hub.

11. The driving component of the processing cartridge according to claim 1 or 4 or 5 or 6 or 8 or 10, characterized in that, The power receiving part is externally provided with an annular outer inclined surface. When the power receiving part is in contact and engaged with the driving head, the outer inclined surface abuts against and is pressed by the driving head, causing the power receiving part to retract inward relative to the hub.

12. A processing cartridge, characterized in that, The processing cartridge is provided with a driving assembly of any one of the processing cartridges according to claims 1 to 11 above.

Images