A process cartridge

Abstract

A process cartridge detachably mountable in an image forming apparatus provided with a drive transmission gear including a first main assembly gear portion and a second main assembly gear portion and an idler gear, the idler gear, the second main assembly gear portion and the first main assembly gear portion being coaxially arranged in this order and rotatably provided, with a direction toward the idler gear being a J direction and a direction opposite to the J direction being an H direction, the process cartridge including: a developing frame; a developing roller rotatably supported on the developing frame; a drum frame; a photosensitive drum rotatably supported on the drum frame; and a drive force receiving gear for engaging with the first main assembly gear portion and / or the second main assembly gear portion to receive a drive force and transmit to the photosensitive drum.

Description

Technical Field

[0001] This utility model relates to the field of image forming technology, and in particular to a processing box. Background Technology

[0002] See Figure 1-6 Chinese patent application CN115210653A, which has been published, describes an imaging device with a drive transmission gear 81 and a housing B detachably installed in the imaging device. The drive transmission gear 81 includes a first main component gear portion 81c and a second main component gear portion 81d coaxially arranged and provided with helical teeth. The helix angle of the first main component gear portion 81c is smaller than that of the second main component gear portion 81d. Correspondingly, the housing B is provided with a first gear portion 63c and a second gear portion 63d for meshing with the first main component gear portion 81c and the second main component gear portion 81d, respectively. The twisting direction of the helical teeth of the first gear portion 63c is opposite to that of the first main component gear portion 81c, and the helix angle of the helical teeth of the first gear portion 63c is the same as that of the first main component gear portion 81c. The twisting direction of the helical teeth of the second gear portion 63d is opposite to that of the second main component gear portion 81d, and the helix angle of the helical teeth of the second gear portion 63d is the same as that of the second main component gear portion 81d.

[0003] When cartridge B is performing imaging operations in the imaging device, the first gear portion 63c meshes with the first main component gear portion 81c, and the second gear portion 63d meshes with the second main component gear portion 81d. Thus, the driving force is transmitted to cartridge B through the first main component gear portion 81c and the first gear portion 63c. At the same time, through the meshing of the second gear portion 63d and the second main component gear portion 81d, the tendency of the drive transmission gear 81 to retract into the imaging device (along the J direction in the figure) is stopped. Therefore, cartridge B can stably receive the driving force.

[0004] As described above, the processing box requires the simultaneous setting of a first gear part and a second gear part with different helix angles to mesh with the first main component gear part and the second main component gear part, which increases the manufacturing cost of the processing box and requires high manufacturing precision. Utility Model Content

[0005] To solve at least one of the above-mentioned technical problems, this utility model provides a processing box, which is detachably installed in an imaging device equipped with a drive transmission gear and an idler wheel. The drive transmission gear includes a first main component gear part and a second main component gear part. The idler wheel, the second main component gear part, and the first main component gear part are arranged coaxially and rotatably in sequence, with the direction toward the idler wheel defined as the J direction and the direction opposite to the J direction defined as the H direction. The processing box includes:

[0006] Developing frame;

[0007] The developing roller is rotatably supported on the developing frame;

[0008] Drum frame;

[0009] A photosensitive drum, rotatably supported on a drum frame; and

[0010] A drive force receiving gear is used to mesh with the first main component gear portion and / or the second main component gear portion to receive drive force and transmit it to the photosensitive drum.

[0011] This invention reduces the manufacturing cost of the processing box by setting a driving force receiving gear.

[0012] In some implementations, the drive force receiving gear meshes with one of the first main component gear portion or the second main component gear portion, and does not mesh with the other.

[0013] By setting the driving force receiving gear to mesh only with either the first main component gear section or the second main component gear section, the need to simultaneously set first and second gear sections with different helix angles to mesh with the first and second main component gear sections respectively is avoided. This solves the problems of increased manufacturing costs and high manufacturing precision requirements for the processing box.

[0014] In some embodiments, the processing box further includes a stop member that applies a force to the idler wheel or drive transmission gear, having at least a component force in the H direction, to prevent the idler wheel or drive transmission gear from retracting in the J direction.

[0015] In some embodiments, the stop member includes a friction element that prevents the idler wheel or drive transmission gear from retracting in the J direction by contacting the idler wheel or drive transmission gear to apply a frictional force having at least a component force in the H direction.

[0016] In some embodiments, the friction element is a pressing part fixedly mounted on the drum frame, which is used to abut against the idler wheel to apply frictional force to the idler wheel.

[0017] In some embodiments, the idler wheel has a recess for engaging with a drive transmission gear, and a pressing portion abuts against the outer circumferential surface of the recess to exert friction on the idler wheel.

[0018] In some embodiments, the drum frame includes a cover and a drum support member, the cover for accommodating a drive force receiving gear, the drum support member being disposed at the end of the processing box, and a pressing portion being disposed on the drum support member or the cover.

[0019] In some embodiments, the friction element is rotatably disposed, and the friction element contacts the drive transmission gear through its outer peripheral surface and generates frictional force.

[0020] In some implementations, the rotation axis of the friction element is parallel to the rotation axis of the drive transmission gear.

[0021] In some implementations, the rotation axis of the friction element is not parallel to the rotation axis of the drive transmission gear.

[0022] In some embodiments, the rotation axis of the friction element is perpendicular to the rotation axis of the drive transmission gear, and the friction element is cylindrical.

[0023] In some embodiments, there are two friction elements, each with a friction surface. The two friction surfaces contact the two sides of the drive transmission gear to generate friction.

[0024] In some embodiments, the friction elements are movably arranged such that the two friction elements can extend toward or retract away from the drive transmission gear, and / or the friction elements are oscillating such that the angle between the two friction elements changes, thereby changing the distance between the friction surfaces of the two friction elements.

[0025] In some embodiments, the friction element is a top member configured to reciprocate radially relative to the drive transmission gear; when the top member extends radially, it can abut against the drive transmission gear, thereby applying a force to the drive transmission gear, and then the top member can retract radially.

[0026] In some embodiments, the top member is configured to extend radially and insert into the tooth gap of the drive transmission gear, thereby applying a force to the drive transmission gear; the top member is also configured to retract radially to avoid the teeth of the drive transmission gear.

[0027] The processing box also includes a first elastic element for providing a force that causes the top member to extend or retract radially.

[0028] In some embodiments, the processing box further includes a first rotatably disposed cam having a protrusion that, when the first cam rotates, pushes against a top member, causing the top member to extend radially; a first elastic member is used to provide a force that causes the top member to retract radially.

[0029] In some embodiments, the stop member includes a gear member, which is a separate structure from the driving force receiving gear. The gear member meshes with the driving transmission gear, thereby applying a force to the driving transmission gear to prevent the driving transmission gear from retracting in the J direction.

[0030] In some embodiments, the gear component is a staggered-axis helical gear, the axis of rotation of which is not parallel to the axis of rotation of the drive transmission gear. The staggered-axis helical gear receives the driving force of the drive transmission gear and rotates, thereby applying a force to the drive transmission gear.

[0031] In some implementations, the axis of rotation of the staggered-axis helical gear is perpendicular to the axis of rotation of the drive transmission gear.

[0032] In some embodiments, the first end of the staggered-axis helical gear is provided with an eccentric column that deviates from the axis of rotation of the staggered-axis helical gear;

[0033] The processing box also includes:

[0034] A second cam, configured to receive the driving force of a gear and rotate coaxially with it, is provided with a transmission structure; and

[0035] The driven member has two ends that are respectively engaged with the transmission structure and the eccentric column. The driven member drives the eccentric column to rotate around the rotation axis of the cross-axis helical gear, thus transmitting the driving force to the cross-axis helical gear.

[0036] In some embodiments, the processing box further includes:

[0037] The developing roller is rotatably supported; and

[0038] The developing drive gear is used to drive the developing roller to rotate.

[0039] The gear component is a crown gear, with teeth on both end faces. The teeth on both end faces mesh with the drive transmission gear and the developing drive gear, respectively, to transmit the driving force from the drive transmission gear to the developing roller. The rotation axis of the crown gear is inclined to the rotation axis of the drive transmission gear, thereby applying a force to the drive transmission gear.

[0040] In some implementations, the gear component generates gears for braking force;

[0041] The stopping component also includes a braking component, which is connected to the braking force generating gear. When the braking force generating gear rotates, the braking component applies braking force to the braking force generating gear and acts on the drive transmission gear through the braking force generating gear.

[0042] In some embodiments, a first support shaft is fixedly provided on the drum frame, a braking force generating gear is rotatably supported on the first support shaft, and a braking component is disposed between the braking force generating gear and the first support shaft to generate a braking force on the braking force generating gear.

[0043] In some embodiments, the braking component includes a braking elastic element disposed between the braking force generating gear and the first support shaft to generate a braking force on the braking force generating gear.

[0044] In some embodiments, the braking elastic element is a torsion spring, with the coil of the torsion spring sleeved around and gripping the first support shaft, and the arm of the torsion spring engaging with the braking force in a gear-like contact.

[0045] In some embodiments, the braking elastic element is a compression spring, the length direction of the braking elastic element is arranged radially along the braking force generating gear, and the two ends of the braking elastic element in the length direction abut against the first support shaft and the braking force generating gear respectively, so as to generate frictional force when the braking force generating gear rotates; there are multiple braking elastic elements, and the multiple braking elastic elements are arranged circumferentially around the braking force generating gear.

[0046] In some embodiments, the braking component further includes a braking connector. The two ends of the braking elastic member along its length are fixedly connected to the inner circumferential wall of the braking force generating gear and the braking connector, respectively. When the braking force generating gear rotates and drives the braking elastic member and the braking connector to rotate, friction is generated between the braking connector and the outer circumferential wall of the first support shaft.

[0047] In some embodiments, the processing box further includes:

[0048] The first functional element is disposed on the driving force receiving gear; and

[0049] The second action is fixedly mounted on the photosensitive drum and is closer to the photosensitive drum than the first action. The second action is used to cooperate with the first action. The driving force of the driving force receiving gear is transmitted to the photosensitive drum through the second action to drive the photosensitive drum to rotate.

[0050] When the driving force receiving gear is driven to rotate by the driving transmission gear, the interaction between the first and second action elements causes the driving force receiving gear to move axially in the J direction.

[0051] In some embodiments, at least one of the first and second action members is provided with a guide ramp. The guide ramp is inclined relative to the axial direction of the driving force receiving gear. When the driving force receiving gear receives driving force and rotates, the first action member can rotate with the driving force receiving gear and act with the second action member through the guide ramp, so that the first action member moves in the axial direction J. The first action member drives the driving force receiving gear to move in the axial direction J.

[0052] In some embodiments, the first action member is fixedly connected to the driving force receiving gear. When the driving force receiving gear receives driving force and rotates, the first action member rotates with the driving force receiving gear. The guiding inclined plane converts the rotational motion of the first action member into axial movement, thereby causing the first action member to move in the J direction axially.

[0053] In some embodiments, the processing box further includes an abutment portion for abutting against the end of the gear portion of the first main component to prevent the drive transmission gear from moving in the H direction or to push the drive transmission gear to move in the J direction.

[0054] In some embodiments, the processing box further includes an actuating element disposed on and rotatable with the driving force receiving gear, the actuating element being configured to slide radially along the driving force receiving gear; an abutment portion is disposed on the radial end of the actuating element.

[0055] When the driving force receiving gear is driven to rotate by the driving transmission gear, the actuating member slides radially away from the axis of the driving force receiving gear under the action of centrifugal force, so that the abutting part extends towards the first main component gear part, and applies a pushing force with at least a component force in the J direction to the first main component gear part, so that the driving transmission gear moves in the J direction.

[0056] In some embodiments, the abutment portion is fixedly disposed on the drum frame or developing frame. When the processing cartridge is installed in the imaging device, the abutment portion abuts against the end of the gear portion of the first main component to prevent the drive transmission gear from moving in the H direction or to push the drive transmission gear to move in the J direction.

[0057] In some embodiments, the processing box further includes a limiting part, which is disposed radially around the drive transmission gear in a direction parallel to the set rotation axis of the drive transmission gear, for limiting the sway of the rotation axis of the drive transmission gear.

[0058] In some embodiments, the limiting portion is configured to extend circumferentially along the drive transmission gear, thereby forming an arc-shaped enclosure around the drive transmission gear. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the meshing transmission structure between the imaging device and the processing box in the prior art;

[0060] Figure 2 This is a partial exploded view of the main component of an imaging device in the prior art;

[0061] Figure 3 This is a schematic diagram of the structure of an imaging device in the prior art;

[0062] Figure 4 This is a schematic diagram of the drive transmission gear in an imaging device in the prior art.

[0063] Figure 5 This is a cross-sectional view of the drive transmission gear and drive side flange in the prior art;

[0064] Figure 6This is a cross-sectional view of the drive section from the main component of the device to the processing box in the prior art;

[0065] Figure 7 This is an exploded view of the processing box according to Embodiment 1 of this utility model;

[0066] Figure 8 This is an exploded view of the processing box according to another embodiment of the present utility model.

[0067] Figure 9 This is a schematic diagram of the meshing transmission structure between the imaging device and the processing box in Embodiment 1 of this utility model;

[0068] Figure 10 This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment 1 of this utility model;

[0069] Figure 11 This is a schematic diagram of the idler wheel and the pressing part in Embodiment 1 of this utility model;

[0070] Figure 12 This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment 2 of this utility model, which shows the limiting part;

[0071] Figure 13 This is a schematic diagram of the drive transmission gear and limiting part in Embodiment 2 of this utility model;

[0072] Figure 14 This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment 3 of this utility model;

[0073] Figure 15 This is a structural schematic diagram of the driving end of the imaging device and processing box in Embodiment 3 of this utility model from another angle, which hides the photosensitive drum and the driving force receiving gear;

[0074] Figure 16 This is a schematic diagram of the driving end of the imaging device and processing box in Embodiment 4 of this utility model;

[0075] Figure 17 This is a structural schematic diagram of the driving end of the imaging device and processing box in Embodiment 4 of this utility model from another angle, which hides the photosensitive drum and the driving force receiving gear.

[0076] Figure 18 This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment 5 of this utility model;

[0077] Figure 19 This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment Six of this utility model;

[0078] Figure 20This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment Six of this utility model, with the frame components hidden.

[0079] Figure 21 This is a schematic diagram of the structure of the drum support component, friction component, and moving component in Embodiment Six of this utility model;

[0080] Figure 22 This is an exploded view of the drum support component, friction component, and moving component of Embodiment Six of this utility model;

[0081] Figure 23 This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment 7 of this utility model;

[0082] Figure 24 This is a schematic diagram of the imaging device and processing box after the drive end cover is hidden in Embodiment 7 of this utility model;

[0083] Figure 25 This is a schematic diagram of the structure of the first cam in Embodiment Seven of this utility model;

[0084] Figure 26 This is a schematic diagram of the top member and the first elastic member in Embodiment 7 of this utility model;

[0085] Figure 27 This is a schematic diagram of the structure of the first cam, driving force receiving gear, photosensitive drum, top part, first elastic part and driving transmission gear in Embodiment 7 of this utility model;

[0086] Figure 28 This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment 8 of this utility model;

[0087] Figure 29 This is a transmission diagram of the photosensitive drum, driving force receiving gear, second cam assembly, and intersecting shaft helical gear in Embodiment 8 of this utility model;

[0088] Figure 30 This is a schematic diagram of the structure of the photosensitive drum, the driving force receiving gear, the second cam, and the intersecting shaft helical gear in Embodiment 8 of this utility model;

[0089] Figure 31 This is a partial schematic diagram of the drive end of the processing box in Embodiment 8 of this utility model, showing the hidden interlaced helical gears;

[0090] Figure 32 This is a partial cross-sectional view of the drive end of the processing box in Embodiment 8 of the present invention, showing the cross-sectional structure of the follower.

[0091] Figure 33 This is a schematic diagram of the driving end of the imaging device and processing box according to Embodiment 9 of this utility model;

[0092] Figure 34 This is a schematic diagram of the drive end of the processing box in Embodiment 9 of this utility model, with hidden frame components and some structures.

[0093] Figure 35 This is a schematic diagram showing the cooperation of the drive transmission part of the main component of the processing box and imaging device in Embodiment 10 of this utility model.

[0094] Figure 36 This is an exploded structural diagram of the processing box according to Embodiment 10 of this utility model;

[0095] Figure 37 This is a partial cross-sectional view of the drive end of the processing box in Embodiment 10 of this utility model.

[0096] Figure 38 This is a schematic diagram of the protective cover, braking component, and braking force generating gear of Embodiment 10 of this utility model;

[0097] Figure 39 This is a partial structural diagram of the drive end of the processing box in Embodiment Eleven of this utility model;

[0098] Figure 40 This is an axial schematic diagram showing the cooperation of the drive transmission part of the main component of the processing box and imaging device in Embodiment Eleven of this utility model.

[0099] Figure 41 This is a schematic diagram showing the cooperation between the processing box and the main component of the imaging device in Embodiment Twelve of this utility model;

[0100] Figure 42 This is an exploded structural diagram of the driving force receiving component of the processing box in Embodiment Twelve of this utility model.

[0101] Figure 43 This is a schematic diagram of the structure of the second functional component of the processing box in Embodiment Twelve of this utility model;

[0102] Figure 44 This is a partial structural schematic diagram of the drum frame of the processing box in Embodiment Twelve of this utility model;

[0103] Figure 45 This is a structural schematic diagram of the driving force receiving gear of the processing box in Embodiment Twelve of this utility model at an angle.

[0104] Figure 46 This is a structural schematic diagram of the driving force receiving gear of the processing box in Embodiment Twelve of this utility model from another angle.

[0105] Figure 47 This is a schematic diagram of the structure of the driving force receiving gear and the first working member in Embodiment Twelve of this utility model;

[0106] Figure 48 This is a cross-sectional view of the driving force receiving component according to Embodiment Twelve of this utility model;

[0107] Figure 49 This is a partial structural diagram of the drive end of the processing box in Embodiment Twelve of this utility model;

[0108] Figure 50 This is a partial cross-sectional view of the drive end of the processing box in Embodiment Twelve of this utility model.

[0109] Figure 51 This is an exploded structural diagram of the driving force receiving component of the processing box in Embodiment Thirteen of this utility model;

[0110] Figure 52 This is a schematic diagram of the driving force receiving gear and the first working element of the processing box in Embodiment Thirteen of this utility model;

[0111] Figure 53 This is a schematic diagram of the structure of the second functional component of the processing box in Embodiment Thirteen of this utility model;

[0112] Figure 54 This is a partial cross-sectional view of the drive end of the processing box in Embodiment Thirteen of this utility model;

[0113] Figure 55 This is a schematic diagram showing the cooperation of the drive transmission part of the processing box and the main component of the imaging device in Embodiment Fourteen of this utility model;

[0114] Figure 56 This is an exploded structural diagram of the driving force receiving component of the processing box in Embodiment Fourteen of this utility model.

[0115] Figure 57 This is a structural schematic diagram of an angle of the driving force receiving gear of the processing box in Embodiment Fourteen of this utility model.

[0116] Figure 58 This is a structural schematic diagram of the driving force receiving gear of the processing box in Embodiment Fourteen of this utility model from another angle.

[0117] Figure 59 This is a schematic diagram of the structure of the second functional member in Embodiment Fourteen of this utility model;

[0118] Figure 60 This is a partial structural diagram of the processing box drive side of Embodiment Fourteen of this utility model;

[0119] Figure 61 This is a partial cross-sectional view of the drum unit drive side of Embodiment Fourteen of this utility model;

[0120] Figure 62This is a schematic diagram showing the engagement of the drive transmission part of the processing box and imaging device main component in the initial state according to Embodiment Fourteen of this utility model.

[0121] Figure 63 This is a schematic diagram showing the final state of the drive transmission part of the processing box and imaging device main component of Embodiment Fourteen of this utility model.

[0122] Figure 64 This is a schematic diagram showing the cooperation between the processing box and the main component of the imaging device in Embodiment 15 of this utility model;

[0123] Figure 65 This is an exploded structural diagram of the driving force receiving component of the processing box in Embodiment 15 of this utility model;

[0124] Figure 66 This is a structural schematic diagram of the driving force receiving gear of the processing box in Embodiment 15 of this utility model at an angle.

[0125] Figure 67 This is a structural schematic diagram of the driving force receiving gear of the processing box in Embodiment 15 of this utility model from another angle.

[0126] Figure 68 This is a structural schematic diagram of the first functional component of the processing box in Embodiment 15 of this utility model at an angle.

[0127] Figure 69 This is a structural schematic diagram of the first functional component of the processing box in Embodiment 15 of this utility model from another angle;

[0128] Figure 70 This is a structural schematic diagram of the second functional component of the processing box in Embodiment 15 of this utility model at an angle;

[0129] Figure 71 This is a structural schematic diagram of the second functional component of the processing box in Embodiment 15 of this utility model from another angle;

[0130] Figure 72 This is a schematic diagram of the structure of the driving force receiving gear and the first and second action members in embodiment 15 of this utility model.

[0131] Figure 73 This is a partial structural diagram of the drive end of the processing box in Embodiment 15 of this utility model;

[0132] Figure 74 This is a schematic diagram of the cooperation between the processing box and the drive transmission part when the main component of the imaging device in Embodiment 15 of this utility model has not started to output driving force.

[0133] Figure 75This is a schematic cross-sectional view of the photosensitive drum, the driving force receiving component, and the driving transmission part when the main component of the imaging device in Embodiment 15 of this utility model has not started to output driving force.

[0134] Figure 76 This is a schematic diagram showing the cooperation between the processing box and the driving force transmission part when the main component of the imaging device in Embodiment 15 of this utility model starts to output driving force.

[0135] Figure 77 This is a schematic cross-sectional view of the photosensitive drum, the driving force receiving component, and the driving transmission part when the main component of the imaging device in Embodiment 15 of this utility model starts to output driving force.

[0136] Figure 78 This is a schematic diagram of the driving force receiving gear of the processing box in Embodiment Sixteen of this utility model.

[0137] Figure 79 This is a partial structural diagram from another angle showing the interaction between the processing box and the driving transmission part of the main component of the imaging device in Embodiment Sixteen of this utility model.

[0138] Figure 80 This is a partial structural schematic diagram of the conductive end of the processing box in Embodiment Sixteen of this utility model;

[0139] Figure 81 This is a partial structural schematic diagram of the conductive end of the processing box drum frame in Embodiment Sixteen of this utility model;

[0140] Figure 82 This is a partial cross-sectional view of the conductive end of the processing box in Embodiment Sixteen of this utility model;

[0141] Figure 83 This is a partial structural diagram of the processing box drive end of Embodiment Seventeen of this utility model;

[0142] Figure 84 This is a schematic diagram of the angle structure of the processing box and the driving transmission part of the main component of the imaging device in Embodiment 17 of this utility model.

[0143] Figure 85 This is a schematic diagram of the drum support component structure of the processing box in Embodiment Seventeen of this utility model;

[0144] Figure 86 This is a schematic diagram of the driving force receiving gear of the processing box in Embodiment Seventeen of this utility model.

[0145] Figure 87 This is a partial structural diagram of the drum support member, driving force receiving gear, and photosensitive drum of the processing box in Embodiment Seventeen of this utility model;

[0146] Figure 88This is a schematic diagram showing the cooperation of the drive transmission part of the main component of the processing box and imaging device in Embodiment 18 of this utility model.

[0147] Figure 89 This is a schematic diagram of the driving force receiving gear and photosensitive drum of the processing box in Embodiment 18 of this utility model.

[0148] Figure 90 This is a partial diagram illustrating the interaction between the processing box and the drive transmission part of the main component of the imaging device in Embodiment 18 of this utility model.

[0149] Figure 91 This is a partially exploded structural diagram of the processing box according to Embodiment 18 of this utility model;

[0150] Figure 92 This is a schematic diagram showing the cooperation of the drive transmission part of the main component of the processing box and imaging device in Embodiment 19 of this utility model;

[0151] Figure 93 This is a partial diagram illustrating the interaction between the processing box and the main component of the imaging device in Embodiment 19 of this utility model. Detailed Implementation

[0152] The present invention will now be described in further detail with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0153] It should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0154] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation" should be interpreted broadly. For example, "installation" and "connection" can refer to fixed connections or movable connections, and "fixation" can refer to non-removable fixed connections or detachable fixed connections. A "non-removable fixed connection" can be formed separately and then installed, or it can be directly integrally formed; it can be a mechanical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components or an interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0155] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0156] In the above description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0157] Example 1

[0158] This invention provides a processing box that is detachably installed in an imaging device. The imaging device can be any existing imaging device; see reference [link to relevant documentation]. Figure 1-6 I will not go into details here.

[0159] In this specification, the direction towards the idler wheel is defined as the J direction, and the direction opposite to the J direction is defined as the H direction, which is parallel to the length direction of the processing box. The end of the processing box facing the J direction is the driving end, and the end facing the H direction is the non-driving end, also known as the conductive end.

[0160] See Figure 7-8 The processing box includes a drum unit 60 and a developing unit 20. The drum unit 60 includes a drum frame, a photosensitive drum 62, a drive force receiving gear 63, a charging roller 66, and a cleaning blade 77. The drum frame has a waste toner collection bin for waste developer. The drum frame includes a frame member 71 and a drum support member 73 fixedly disposed at the end of the frame member 71. The drum support member 73 is disposed at both ends of the frame member 71 along its length (one end in the J direction and one end in the H direction). A cover 711 is provided at the end of the frame member 71 to accommodate the drive force receiving gear 63. In this embodiment, the cover 711 is integrally formed with the frame member 71. The two ends of the photosensitive drum 62 along its axial direction (parallel to the H and J directions) are rotatably supported on the drum support member 73. The frame member 71 and the drum support member 73 can be integrally formed or separate structures. A charging roller 66 is mounted on the drum frame and contacts the photosensitive drum 62 to charge the photosensitive drum 62, and a cleaning scraper 77 is mounted on the drum frame and at least partially contacts the photosensitive drum 62 to clean residual waste developer on the photosensitive drum 62.

[0161] like Figure 8 As shown, the developing unit 20 includes a developing frame 20a, a developing roller 11, a stirring frame (not shown), and a powder discharge blade 42. The developing frame 20a encloses a powder hopper for storing developer. The developing roller 11 and the stirring frame are rotatably supported on the developing frame 20a. The axial directions of the developing roller 11 and the stirring frame are parallel to the axial direction of the photosensitive drum 62. The stirring frame is used to stir the developer in the powder hopper and can transfer the developer towards the developing roller 11. The powder discharge blade is mounted on the developing frame 20a and has linear contact with the surface of the developing roller 11 to control the thickness of the developer on the developing roller 11.

[0162] The developing unit 20 and the drum unit 60 are movably connected, and can be oscillatingly connected through a shaft hole provided on the drum frame and a support shaft provided on the developing frame 20a, so that the developing roller 11 and the photosensitive drum 62 can come into contact with each other or separate. In some embodiments, the developing unit 20 and the drum unit 60 may also be fixedly connected.

[0163] See Figure 9-11The driving force receiving gear 63 is directly or indirectly connected to the end of the photosensitive drum 62 to receive the driving force from the driving transmission gear 81 in the imaging device. In this embodiment, only one driving force receiving gear 63 is provided, and the driving force receiving gear 63 has only one helix angle. It is used to mesh with one of the first main component gear part 81c or the second main component gear part 81d in the driving transmission gear 81 to receive the driving force and transmit it to the photosensitive drum 62, while the other main component gear part of the driving transmission gear 81 idles and does not mesh with the driving force receiving gear 63. Since only one driving force receiving gear 63 with a helix angle needs to be provided to mesh with one of the first main component gear part 81c or the second main component gear part 81d, it can avoid the need to simultaneously provide a first gear part 63c and a second gear part 63d with different helix angles to mesh with the first main component gear part 81c and the second main component gear part 81d respectively, thus avoiding the problems of increased manufacturing cost and high manufacturing precision requirements of the processing box. In this embodiment, the driving force receiving gear 63 is preferably engaged with the gear portion 81c of the first main component.

[0164] See Figure 1-6 In the operation of existing imaging devices, the drive transmission gear 81 tends to retract into the imaging device along the J direction. Specifically, the drive transmission gear 81 is rotated by a motor (not shown) of the main component A of the device and rotates along the I direction (clockwise when viewed from the J direction to the H direction). Consequently, the drive force receiving gear 63 rotates in the K direction (counterclockwise when viewed from the J direction to the H direction). Immediately after the drive transmission gear 81 begins to rotate along the I direction, the second main component gear portion 81d of the drive transmission gear 81 first meshes with the second gear portion 63d of the drive force receiving gear 63 to transmit driving force to it, as... Figure 5 As shown. Then, the second main component gear portion 81d applies a thrust along the H direction to the second gear portion 63d. However, the driving force receiving gear 63 is ribbed 71p (see... Figure 6 The second main component gear 81d receives a thrust F5 in the J direction, which is prevented from moving in the H direction. Therefore, due to the reaction force received from the second gear section 63d, the second main component gear section 81d receives a thrust F5 in the J direction. The drive transmission gear 81 thus tends to retract into the imaging device along the J direction.

[0165] In this embodiment, the processing box includes a stop member to address the retraction problem of the drive transmission gear 81. The stop member applies a force with at least a component force in the H direction to the idler wheel 80 or the drive transmission gear 81 (specifically, the first main component gear portion 81c or the second main component gear portion 81d) to prevent the idler wheel 80 or the drive transmission gear 81 from retracting in the J direction. The stop member includes a friction element that applies a frictional force with at least a component force in the H direction by contacting the idler wheel 80 or the drive transmission gear 81 to prevent the idler wheel 80 or the drive transmission gear 81 from retracting in the J direction. It should be noted that the friction element is not necessarily made of a material with high friction; any component capable of generating friction can be considered a friction element.

[0166] In this embodiment, the friction element is specifically the pressing part 711a.

[0167] See Figure 10-11 The pressing part 711a is used to abut against the idler wheel 80 of the imaging device to prevent the idler wheel 80 from retracting into the imaging device. Since the idler wheel 80 rotates synchronously with the drive transmission gear 81 and moves synchronously in the axial direction, it also prevents the drive transmission gear 81 from retracting into the imaging device. Figure 2 As shown, the idler wheel 80 has a recess 80a1 that engages with the protrusion 81a1 of the drive transmission gear 81. Preferably, in this embodiment, the pressing part 711a abuts against the outer circumferential surface of the recess 80a1 of the idler wheel 80, and the friction between the pressing part 711a and the outer circumferential surface of the recess 80a1 prevents the idler wheel 80 and the drive transmission gear 81 from retracting toward the inside of the imaging device. In other embodiments, the pressing part 711a may also be configured to abut against other parts of the idler wheel 80, as long as it can prevent the idler wheel 80 and the drive transmission gear 81 from retracting toward the inside of the imaging device. In this embodiment, the pressing part 711a is provided on the cover 711, specifically as a protrusion formed on the cover 711. In other embodiments, the pressing part 711a may also be provided on the drum support member 73, as long as it can abut against the idler wheel 80.

[0168] This embodiment also provides a modified implementation method:

[0169] The pressing part 711a can also be an annular buckle formed on the cover 711 or the drum support member 73, which can wrap around the outer circumferential surface of the recess 80a1 of the idler wheel 80, and form a frictional force between the idler wheel 80 and the outer circumferential surface of the recess 80a1 to prevent the idler wheel 80 and the drive transmission gear 81 from retracting toward the inside of the imaging device.

[0170] This embodiment avoids the problem of increased manufacturing cost and high manufacturing precision requirements caused by simultaneously setting a first gear part and a second gear part with different helix angles to mesh with the first main component gear part 81c and the second main component gear part 81d, by setting the driving force receiving gear 63 to mesh with only one of the first main component gear part 81c or the second main component gear part 81d; secondly, by setting the pressing part 711a, the driving transmission gear 81 is prevented from retracting into the imaging device.

[0171] Example 2

[0172] See Figure 12-13 This embodiment is largely the same as the previous one, except that: in this embodiment, the pressing part 711a is not provided, and the limiting part 711b is provided instead. In other embodiments, the processing box may also be provided with both the pressing part 711a and the limiting part 711b.

[0173] The limiting part 711b is arranged radially around the drive transmission gear 81 in a direction parallel to the rotation axis of the drive transmission gear 81, and is used to limit the sway of the rotation axis of the drive transmission gear 81. During normal operation of the imaging device, the limiting part 711b and the drive transmission gear 81 have a small gap and do not contact each other. When the drive transmission gear 81 sways relative to its rotation axis, that is, when the actual rotation axis of the drive transmission gear 81 does not coincide with the set rotation axis, the limiting part 711b, being arranged parallel to the set rotation axis of the drive transmission gear 81, will abut against the limiting part 711b after swaying, thus limiting its deflection and making the transmission smoother. The limiting part 711b can be directly formed on the edge of the cover 711. In this embodiment, the limiting part 711b also protrudes relative to the edge of the cover 711, extending to a certain extent in the circumferential direction of the drive transmission gear 81, forming an arc-shaped wrapping part (see...). Figure 13 This allows for better positioning of the drive transmission gear 81.

[0174] In this embodiment, the limiting part 711b is provided to prevent the drive transmission gear 81 from deflecting during transmission, thus ensuring smooth transmission.

[0175] Example 3

[0176] The difference between this embodiment and embodiment one is that the friction element 67 in this embodiment contacts the drive transmission gear 81, specifically the first main component gear part 81c or the second main component gear part 81d. In this embodiment, it is preferable that the friction element 67 contacts the second main component gear part 81d.

[0177] See Figure 14-15The friction element 67 is configured with a friction surface 671 that contacts the second main component gear portion 81d and generates frictional force. This frictional force has at least a component in the H direction. By applying a frictional force in the H direction to the second main component gear portion 81d, the retraction of the second main component gear portion 81d in the J direction is prevented. The friction element 67 of this invention replaces the second gear portion 63d in the prior art, preventing the tendency of the second main component gear portion 81d to retract in the J direction. The friction element 67 applies frictional force to the second main component gear portion 81d through the friction surface 671, eliminating the need for the gear structure of the second gear portion 63d, thus simplifying the structure of the processing box. The friction element 67 has lower manufacturing precision, thus effectively reducing the manufacturing cost of the processing box.

[0178] In this embodiment, the friction element 67 is disposed on the inner wall of the cover. Specifically, the friction element 67 is rotatably disposed on the cover via the support member 68, thereby allowing the friction element 67 to rotate with the second main component gear portion 81d. The rotatable arrangement of the friction element 67 ensures that the friction element 67 does not obstruct or minimally obstructs the rotational movement of the second main component gear portion 81d. In this embodiment, the support member 68 is rotatably disposed on the mounting pin 731. In this embodiment, the friction surface 671 of the friction element 67 is formed on the outer peripheral surface of the friction element 67. In this embodiment, the outer peripheral surface is specifically the outer circumferential surface. The outer circumferential surface of the friction element 67 contacts the teeth of the second main component gear portion 81d, thereby applying a frictional force in the H direction to the second main component gear portion 81d. Further, in this embodiment, the friction element 67 is annular, and only one support member 68 is provided, with the friction element 67 sleeved on the support member 68. Furthermore, the rotation axis of the friction element 67, which is also the axis of the support element 68, coincides with the rotation axis of the driving force receiving gear and the photosensitive drum.

[0179] The friction element 67 can be made entirely of a material that generates friction, or it can be made only at the friction surface 671, while other parts are made of a smooth material. In this embodiment, it is made entirely of a material that generates friction. Specifically, the friction element 67 can be made of a material with high friction or a certain degree of elasticity. In this embodiment, the friction element 67 is made of rubber.

[0180] Example 4

[0181] See Figure 17 This embodiment is largely the same as the previous one, with the main difference being the shape and structure of the friction element 67.

[0182] In this embodiment, the friction element 67 is strip-shaped, for example, a belt structure. Two support members 68 are provided, and the friction element 67 is rotatably wrapped around the two support members 68. The friction element 67 is supported by the support members 68 and can rotate around them. The axes of the two support members are parallel but not coincident, and the axes of the two support members are respectively parallel to the rotation axis of the photosensitive drum 62 and the rotation axis of the driving force receiving gear 63. That is, the friction element 67 in this embodiment has two parallel rotation axes. A friction surface is formed on the outer peripheral surface of the strip-shaped friction element. In this embodiment, the two support members 68 are symmetrically arranged on both sides of the rotation axis of the driving force receiving gear, that is, the support members 68 are arranged 180 degrees apart around the rotation axis of the driving force receiving gear 63.

[0183] Example 5

[0184] See Figure 18 This embodiment is largely the same as the previous one, except that the rotation axis of the friction element 67 is set in a different direction.

[0185] In this embodiment, the friction element 67 is generally cylindrical, and its axis of rotation is not parallel to the axis of rotation of the second main component gear portion 81d, i.e., it is inclined or perpendicular. Specifically, in this embodiment, the axis of rotation of the friction element 67 is perpendicular to the axis of rotation of the photosensitive drum 62 and the axis of rotation of the driving force receiving gear 63. The outer circumferential surface of the friction element 67 forms a friction surface 671, which contacts the second main component gear portion 81d and generates a frictional force with at least an axial component on the second main component gear portion 81d. The friction element 67 is rotatably disposed, so that it can rotate under the drive of the second main component gear portion 81d, thereby reducing the obstruction to the rotation of the second main component gear portion 81d.

[0186] Example 6

[0187] See Figure 19-22 The difference between this embodiment and embodiments three to five is that there are two friction elements 67 in this embodiment, and the friction elements 67 cannot rotate but can move telescopically relative to the photosensitive drum.

[0188] In this embodiment, there are two friction members 67, each with a friction surface 671 at its end. A receiving space is formed between the two friction surfaces 671, allowing the second main component gear portion 81d to be accommodated within this space. Specifically, the two friction surfaces 671 contact both sides of the second main component gear portion 81d, generating friction and preventing the second main component gear portion 81d from retracting in the J direction. This design of contacting both sides ensures a more balanced force on the second main component gear portion 81d, preventing displacement due to force applied by the friction member 67 on one side. The friction members 67 clamp the second main component gear portion 81d from both sides, further increasing the friction. Preferably, each of the two friction members 67 has an inclined surface at its end, which is inclined relative to the extension direction of the friction member 67. The inclined surface forms the friction surface 671, allowing it to better conform to the second main component gear portion 81d.

[0189] Preferably, the friction element 67 is movably configured so that it can extend toward or retract away from the second main component gear portion 81d. This telescopic design allows for adjustment of the extension length of the friction element 67 relative to the second main component gear portion 81d, enabling flexible adjustment of the contact degree and friction force between the two. In some embodiments, the friction element 67 is pivotally configured so that the angle between the two friction elements 67 can change, thereby changing the distance between the friction surfaces 671 of the two friction elements 67. When the distance increases, the clamping force of the friction surfaces 671 on the second main component gear portion 81d loosens, resulting in less friction; when the distance decreases, the clamping force of the friction surfaces 671 on the second main component gear portion 81d tightens, resulting in more friction. The friction element 67 can be configured to be telescopic only, or to have an adjustable angle only, or both, to adjust the friction force. In this embodiment, both are selected.

[0190] Furthermore, the processing box also includes a movable component 67a, which is connected to the friction component 67, thereby enabling the friction component 67 to extend, retract, and change angle. The second end of the movable component 67a extends outside the drum frame. During the assembly of the processing box, the assembler can manually adjust the extension length and angle between the two friction components 67 through the second end of the movable component 67a, thereby adjusting the friction component 67 and the second main component gear portion 81d to a suitable distance. This ensures that after the processing box is installed in the imaging device (i.e., after the door is closed, as detailed below), the friction component 67 and the second main component gear portion 81d have a suitable contact distance and friction effect. Preferably, the first end of the movable component 67a is sleeved on the support portion 63a extending axially from the photosensitive drum 62 or the driving force receiving gear 63 and can move relative to the support portion 63a, thereby driving the friction component 67 to move. Preferably, the friction member 67 is provided with a first connecting shaft 672 and a second connecting shaft 673. The drum frame has two elongated holes 71c that penetrate the drum support member 73 and the frame member 71. The two first connecting shafts 672 are slidably disposed on the two elongated holes 71c, allowing the friction member 67 to be slidably disposed with the drum frame. The second connecting shaft 673 is used to rotatably connect with the moving member 67a. Specifically, the extending directions of the two elongated holes 71c are inclined to each other, so that when the moving member 67a is pushed, the first connecting shaft 672 slides along the elongated holes 71c, causing the angle between the two friction members 67 to change, thereby changing the distance between the friction surfaces of the two friction members. Furthermore, the two elongated holes 71c approach each other in the direction toward the second main component gear portion 81d, such that when the moving member 67a drives the two friction members 67 to extend toward the second main component gear portion 81d, the angle between the two friction members 67 changes, the friction surfaces 671 of the two friction members 67 approach each other, and the clamping degree of the second main component gear portion 81d becomes tighter, thereby increasing the frictional force on the second main component gear portion 81d.

[0191] Specifically, when the processing cartridge is installed in the imaging device, since the moving part 67a is exposed to the outside relative to the drum frame, when the door cover of the imaging device (not shown in the figure) is closed, one end of the moving part 67a abuts against the door cover, and the door cover applies a force to the moving part 67a. The moving part 67a moves along the installation direction of the processing cartridge (i.e., the direction intersecting the direction of the photosensitive drum axis), thereby driving the friction part 67 connected to the moving part 67a to move. At this time, the friction part 67 changes from the first state to the second state. In the first state, the friction part 67 has a gap with the gear part 81d of the second main component; in the second state, the friction part 67 abuts against the gear part 81d of the second main component.

[0192] When the developer in the processing cartridge is depleted, the door of the imaging device is opened. After the moving part 67a loses the force of the door cover, it moves in a direction away from the axis of the photosensitive drum (this can be achieved by setting an elastic element on the moving part 67a or the friction part 67, or by the elastic force of the friction part 67 itself). This causes the friction part 67 to change from the second state to the first state. There is no longer any interference between the friction part 67 and the gear part 81d of the second main component, so the processing cartridge can be easily removed by the user.

[0193] Optionally, the friction element 67 is made of a rigid material (as opposed to an elastic material), and the rigid contact between the friction element 67 and the second main component gear part 81d (at which point the friction surface is a rigid surface rather than an elastic surface, and the friction force generated is small) can also prevent the second main component gear part 81d from retracting in the J direction.

[0194] Example 7

[0195] In this embodiment, the friction element is specifically a top part.

[0196] The processing box in this embodiment includes a top-positioning assembly, which provides a force to the gear portion 81d of the second main assembly to prevent the gear portion 81d of the second main assembly from retracting in the J direction. (See also...) Figure 23-27 The top position assembly includes a top position member 69a, a first elastic member 69b, and a first cam 69c.

[0197] The top member 69a is configured to reciprocate radially relative to the second main component gear portion 81d, where radial direction refers to the radial direction of the second main component gear portion 81d (i.e., the radial direction of the photosensitive drum 62). The top member 69a is configured to extend radially and abut against the second main component gear portion 81d, thereby applying a force to the second main component gear portion 81d to prevent it from retracting towards the idler gear. The top member 69a can retract radially. The top member 69a can be configured to abut against any part of the second main component gear portion 81d, as long as it can apply a force to the second main component gear portion 81d to prevent it from retracting towards the idler gear. In this embodiment, it is preferable that the top member 69a is inserted into the tooth gap of the second main component gear portion 81d. Since the second main component gear portion 81d is rotating, when the top member 69a retracts radially, it can avoid the next rotating tooth of the second main component gear portion 81d. The arrangement of the top member 69a, which inserts into the tooth gap and avoids the teeth of the second main component gear portion 81d, minimizes the interference of the top member 69a with the rotational movement of the second main component gear portion 81d and prevents rigid collision between the top member 69a and the teeth of the second main component gear portion 81d, thus preventing damage. The top member 69a is inserted into the tooth gap of the second main component gear portion 81d, and through contact with the second main component gear portion 81d via its top or side, etc., it provides friction. This friction has at least an axial component to prevent the second main component gear portion 81d from retracting in the J direction.

[0198] The first elastic member 69b provides an elastic force that causes the top member 69a to extend or retract radially. In this embodiment, the first elastic member 69b provides a force that causes the top member 69a to retract radially, while the first cam 69c provides a force that causes the top member 69a to extend radially. Specifically, the extension direction refers to the direction in which the top member 69a moves closer to the second main component gear portion 81d, and the retraction direction refers to the direction in which the top member 69a moves away from the second main component gear portion 81d.

[0199] See Figure 24-25 The first cam 69c is rotatably configured and has a protrusion 69c4. When the first cam 69c rotates, the protrusion 69c4 pushes the top member 69a, causing the top member 69a to extend radially and insert into the tooth gap of the gear portion 81d of the second main assembly. See, for details. Figure 25The first cam 69c has multiple grooves 69c5 along its circumferential direction, and the aforementioned protrusion 69c4 is formed between two adjacent grooves 69c5 in the circumferential direction. In this embodiment, the first cam 69c is coaxially arranged with the driving force receiving gear 63 and obtains driving force through the driving force receiving gear 63 to rotate synchronously with the driving force receiving gear 63. One or more top members 69a can be provided, and one or more sets of protrusions 69c4 can be provided at different positions in the axial direction of the first cam 69c. The number of top members 69a is the same as the number of sets of protrusions 69c4. One top member 69a corresponds to one set of protrusions 69c4. Each set of protrusions 69c4 includes multiple protrusions 69c4 spaced apart along the circumference of the first cam 69c. Preferably, the multiple protrusions 69c4 are evenly distributed to fill a circumference (in other embodiments, they can also be unevenly distributed and not fill a circumference). In this embodiment, three top members 69a are provided, namely a first top member 69a1, a second top member 69a2, and a third top member 69a3. (See attached document.) Figure 25 The protrusions 69c4 are arranged in three groups: the first group of protrusions 69c1, the second group of protrusions 69c2, and the third group of protrusions 69c3. In other embodiments, the number of protrusions can also be different. The first elastic member 69b can be arranged in a one-to-one correspondence with the top member 69a.

[0200] Specifically, the top-positioning component is disposed within the cover 711. A limiting platform 69d is also fixedly disposed on the cover 711, and the top-positioning member 69a is movably disposed on the limiting platform 69d. A first elastic member 69b is connected between the top-positioning member 69a and the limiting platform 69d. In this embodiment, see reference... Figure 26 The top part 69a is rod-shaped, and a limiting boss 69a4 is provided at one end facing the first cam 69c. The first elastic part 69b is sleeved on the top part 69a, and the two ends of the first elastic part 69b abut against the limiting boss 69a4 and the limiting platform 69d respectively.

[0201] When the first cam 69c rotates, each top member 69a reciprocates radially relative to the second main component gear portion 81d under the action of each group of multiple protrusions 69c4, so as to sequentially insert into different tooth gaps of the second main component gear portion 81d, thereby avoiding the tooth peaks of the second main component gear portion 81d and reducing the obstruction to the rotational movement of the second main component gear portion 81d. Taking the first top member 69a1 and the first group of protrusions 69c1 as an example, when one of the protrusions of the first group of protrusions 69c1 contacts the first top member 69a1, it pushes the first top member 69a1 to move radially, and the first elastic member 69b is compressed. As the first cam 69c rotates, the protrusion moves away from the first top member 69a1, and the first top member 69a1 retracts radially under the elastic force of the first elastic member 69b, moving away from the second main component gear portion 81d, until the next protrusion of the first group of protrusions 69c1 contacts the first top member 69a1, and the above process is repeated. The first top member 69a1 reciprocates radially relative to the second main component gear portion 81d under the action of multiple protrusions of the first set of protrusions 69c1. At the same time, since the second main component gear portion 81d is rotating, the first top member 69a1 is inserted into different tooth gaps of the second main component gear portion 81d in sequence, thereby avoiding the tooth peaks of the second main component gear portion 81d.

[0202] Because the teeth of the second main component gear 81d are helical teeth, the different groups of protrusions 69c4 are staggered in the circumferential direction. That is, the first group of protrusions 69c1, the second group of protrusions 69c2 and the third group of protrusions 69c3 are staggered, so that the different top members 69a pushed by the different groups of protrusions 69c4 are inserted into the tooth gaps of the second main component gear 81d in sequence. That is, the first top member 69a1, the second top member 69a2 and the third top member 69a3 are not inserted into the second main component gear 81d at the same time, but are inserted into the tooth gaps in sequence. This ensures that the top members 69a exert force on the second main component gear 81d at different times, while also avoiding the tooth peaks of the second main component gear 81d.

[0203] See Figure 26-27 In this embodiment, the end of the top member 69a facing the second main component gear portion 81d is also provided with a transition arc surface 69a5. The transition arc surface 69a5 is arranged upstream of the rotation direction of the second main component gear portion 81d. When the second main component gear portion 81d rotates along the I direction, the teeth of the second main component gear portion 81d may contact the end of the top member 69a. By setting the end of the top member 69a as the transition arc surface 69a5, the teeth of the second main component gear portion 81d can smoothly transition when they contact the top member 69a, preventing rigid collisions that could damage the second main component gear portion 81d.

[0204] In some embodiments, the first cam 69c may be omitted, and reciprocating motion may be achieved solely through the cooperation of the top member 69a and the first elastic member 69b. When the first elastic member 69b is not under force, the top member 69a is positioned in an extended state and abuts against the second main component gear portion 81d. When the teeth of the second main component gear portion 81d rotate and push the top member 69a to retract radially, the first elastic member 69b stores force. When the teeth of the second main component gear portion 81d leave the top member 69a, the first elastic member 69b releases, causing the top member 69a to re-extend and abut against the second main component gear portion 81d.

[0205] Example 8

[0206] The difference between this embodiment and embodiments one through seven is that the stopping member in this embodiment is a gear member. The gear member and the driving force receiving gear 63 are separate structures (i.e., they are not an integral structure, but independent structures). The gear member meshes with the driving transmission gear 81 (which can be the first main component gear part 81c or the second main component gear part 81d), thereby applying a force to the driving transmission gear 81 to prevent the driving transmission gear 81 from retracting in the J direction. In this embodiment, the gear member is preferably engaged with the second main component gear part 81d, and the gear member is specifically a staggered helical gear 70a.

[0207] See Figure 28 The rotation axis of the staggered-axis helical gear 70a is not parallel to the rotation axis of the second main component gear portion 81d. The staggered-axis helical gear 70a rotates under the driving force of the driving force receiving gear 63, thereby applying a force to the second main component gear portion 81d to prevent it from retracting in the direction of the idler gear 80 (i.e., the J direction). Since the staggered-axis helical gear 70a is driven to rotate by the driving force receiving gear 63, when it meshes with the second main component gear portion 81d, it can apply an axial force to the second main component gear portion 81d, preventing it from retracting in the J direction. In this embodiment, the rotation axis of the staggered-axis helical gear 70a is set perpendicular to the rotation axis of the second main component gear portion 81d.

[0208] In this embodiment, the second cam assembly and the staggered shaft helical gear 70a are disposed in the cover 711.

[0209] See Figure 29 and Figure 31 In this embodiment, the staggered-axis helical gear 70a is mounted on the processing box via a lower fixing member 70f. The lower fixing member 70f is fixed to the side wall of the drum support member 73, and a positioning post 70f1 is provided on the lower fixing member 70f. The second end of the staggered-axis helical gear 70a is rotatably mounted on the positioning post 70f1, so that the staggered-axis helical gear 70a can rotate about the positioning post 70f1 as the axis of rotation.

[0210] See Figures 29-30 In this embodiment, the driving force of the driving force receiving gear 63 is transmitted to the staggered shaft helical gear 70a through the second cam assembly. In other embodiments, other transmission structures may also be used to transmit the driving force. The second cam assembly includes a second cam 70b and a follower 70c. The second cam 70b is configured to receive the driving force of the driving force receiving gear 63 and rotate coaxially with it. The second cam 70b is provided with a transmission structure, which in this embodiment is a transmission groove 70b1 arranged circumferentially around the second cam 70b. In other embodiments, it may also be a protrusion or other transmission structure. An eccentric post 70a1 is provided at the first end of the staggered-axis helical gear 70a. The eccentric post 70a1 is offset from the rotation axis of the staggered-axis helical gear 70a. The two ends of the driven member 70c are respectively engaged with the transmission groove 70b1 and the eccentric post 70a1. The driven member 70c drives the eccentric post 70a1 to rotate around the rotation axis of the staggered-axis helical gear 70a, thereby causing the staggered-axis helical gear 70a to rotate around its own rotation axis, transmitting the driving force to the staggered-axis helical gear 70a. In this embodiment, a transmission protrusion 70c1 is provided at the first end of the driven member 70c. The transmission protrusion 70c1 engages with the transmission groove 70b1 for transmission. A transmission through hole 70c3 is provided at the second end of the driven member 70c, and the eccentric post 70a1 is rotatably disposed in the transmission through hole 70c3. During transmission, the transmission protrusion 70c1 located at the first end of the driven member 70c moves axially relative to the second cam 70b under the action of the transmission groove 70b1. The transmission through hole 70c3 located at the second end of the driven member 70c rotates 360 degrees around the rotation axis of the staggered shaft helical gear 70a. The driven member 70c as a whole reciprocates and swings approximately around the connecting pin 70d (described in detail later).

[0211] See Figure 31 In this embodiment, the driven member 70c is mounted on the processing box via the upper fixing member 70e. The driven member 70c is approximately a sheet-like structure. The upper fixing member 70e consists of two pieces, and the driven member 70c is positioned between the two pieces of the upper fixing member 70e, such that the driven member 70c is limited in the axial direction of the intersecting helical gear 70a (i.e., it is essentially unable to move in that axial direction), but the driven member 70c is allowed to move in a plane perpendicular to the axial direction of the intersecting helical gear 70a. Specifically, the processing box also includes a connecting pin 70d. A limiting through hole 70c2 is provided in the middle of the driven member 70c. The connecting pin 70d connects to the upper fixing member 70e and passes through the limiting through hole 70c2. The diameter of the limiting through hole 70c2 is much larger than the diameter of the connecting pin 70d (see [reference]). Figure 32This allows the driven member 70c to move within a permissible range on a plane perpendicular to the axial direction of the staggered helical gear 70a, thereby enabling transmission between the second cam 70b and the staggered helical gear 70a. The connecting pin 70d and the limiting through hole 70c2 have a certain limiting function, preventing the driven member 70c from moving out of its intended range of motion.

[0212] Example 9

[0213] The difference between this embodiment and embodiment eight is that the gear component in this embodiment is specifically a crown gear 71a.

[0214] See Figure 33 The crown gear 71a is configured to receive the driving force of the second main component gear portion 81d and rotate to transmit it to the developing drive gear 230. The rotation axis of the crown gear 71a is configured to be inclined to the rotation axis of the photosensitive drum 62, that is, the rotation axis of the crown gear 71a is inclined to the rotation axis of the second main component gear portion 81d, so that the crown gear 71a can apply a force to the second main component gear portion 81d. This force has an axial component to prevent the second main component gear portion 81d from retracting in the direction of the idler wheel (i.e., the J direction).

[0215] See Figure 34 In this embodiment, both end faces of the crown gear 71a are provided with teeth. The teeth on the two end faces mesh with the second main component gear portion 81d and the developing drive gear 230, respectively. The developing drive gear 230 is connected to the developing roller 11 for transmission, so that the developing roller 11 obtains the driving force from the second main component gear portion 81d through the crown gear 71a. This avoids the influence on the movement of the photosensitive drum 62 when the driving force receiving gear 63 directly drives the developing drive gear 230 in the prior art, thereby increasing the stability of the photosensitive drum 62. At the same time, since the crown gear 71a meshes with the second main component gear portion 81d and the developing drive gear 230, the developing drive gear 230 becomes the load of the crown gear 71a. Moreover, the rotation axis of the crown gear 71a is inclined to the rotation axis of the second main component gear portion 81d, so that the crown gear 71a can apply a force in the H direction to the second main component gear portion 81d to prevent it from retracting in the J direction.

[0216] Furthermore, in this embodiment, the crown gear 71a is disposed in the cover and is mounted via a support shaft 71b. The support shaft 71b is disposed between the end of the driving force receiving gear 63 and the side wall of the cover 711. The support shaft 71b is fixed to the cover 711, and the axis of the support shaft 71b is inclined to the rotation axis of the driving force receiving gear 63. The crown gear 71b is rotatably disposed on the support shaft 71b.

[0217] Example 10

[0218] The difference between this embodiment and embodiments eight and nine is that in this embodiment, the stopping member includes a gear member and a braking member, wherein the gear member is specifically a braking force generating gear 72a. The braking member is connected to the braking force generating gear 72a. When the braking force generating gear 72a rotates, the braking member applies braking force to the braking force generating gear 72a and acts on the drive transmission gear through the braking force generating gear 72a.

[0219] See Figure 37 The driving force receiving gear 63 has a first annular protrusion 311 on its J-direction side end face, and the frame member 71 has a first through hole 231a. During installation, the first annular protrusion 311 is embedded in the first through hole 231a to support the driving force receiving gear 63. The driving force receiving gear 63 and the first main component gear part 81c in the driving transmission gear 81 receive driving force. The helix angle of the teeth of the driving force receiving gear 63 is the same as the helix angle of the first main component gear part 81c, but their rotation directions are opposite.

[0220] like Figures 35 to 38 As shown, there is a space between the drum support member 73 and the frame member 71, which houses the braking force generating gear 72a. Specifically, the braking force generating gear 72a is rotatably supported on the drum support member 73, and the axis of rotation of the braking force generating gear 72a is parallel to (preferably coincident with) the axis of rotation of the photosensitive drum. The braking force generating gear 72a is located on the J-direction side of the driving force receiving gear 63, and the H-direction end of the braking force generating gear 72a abuts against the J-direction end face of the cover 711 of the frame member 71. A first support shaft 271 and a second annular protrusion 272 are provided on the inner side (H-direction side) of the drum support member 73. Both the first support shaft 271 and the second annular protrusion 272 are used to support the braking force generating gear 72a, and the first support shaft 271 is located at the axial center of the second annular protrusion 272. The braking force generating gear 72a has a third annular protrusion 321 and a second through hole 322a located at the axial position of the third annular protrusion 321. The diameter of the third annular protrusion 321 is adapted to the diameter of the second annular protrusion 272, and the diameter of the second through hole 322a is adapted to the diameter of the first support shaft 271. During installation, the third annular protrusion 321 is embedded into and abuts against the inner side of the second annular protrusion 272, and the first support shaft 271 is inserted into the second through hole 322a, so that the braking force generating gear 72a is rotatably supported by the drum support member 73. The helix angle of the teeth of the braking force generating gear 72a is the same as the helix angle of the second main component gear portion 81d, but the rotation direction is opposite.

[0221] like Figures 36 to 38As shown, the braking component is connected to the braking force generating gear 72a. When the braking force generating gear 72a rotates, the braking component generates braking force, which acts on the drive transmission gear through the braking force generating gear 72a. Specifically, the braking component includes a braking elastic element. In this embodiment, the braking elastic element is a torsion spring 41. The coil portion of the torsion spring 41 is fitted and holds the first support shaft 271, and the arm portion of the torsion spring 41 abuts against the braking force generating gear 72a. The braking force generating gear 72a is provided with at least one abutting structure 323 for the arm portion of the torsion spring 41 to abut against. Preferably, the abutting structure 323 protrudes from the inner circumferential wall of the third annular protrusion 321. The abutting structure 323 is an abutting rib, and multiple abutting ribs are provided. The multiple abutting ribs are arranged at intervals along the circumferential direction of the third annular protrusion 321. The arm portion of the torsion spring 41 can abut against the abutting rib or abut against the gap between two abutting ribs. Alternatively, the abutment structure 323 can also be an abutment groove formed on the inner circumferential wall of the third annular protrusion 321.

[0222] like Figures 35 to 38 As shown, when driving begins, the first main component gear portion 81c of the drive transmission gear 81 meshes with the drive force receiving gear 63 and transmits driving force to it, causing it to rotate (rotate along the first circumferential direction). Simultaneously, the second main component gear portion 81d of the drive transmission gear 81 meshes with the braking force generating gear 72a and transmits driving force to it. When the braking force generating gear 72a rotates, the braking member (torsion spring 41) is torsional deformed, thereby generating braking force. This braking force is transmitted to the drive transmission gear 81 through the meshing relationship between the braking force generating gear 72a and the second main component gear portion 81d. The direction of this braking force is opposite to the direction of the driving force; that is, when it acts on the drive transmission gear 81, it has a rotational force along the second circumferential direction (opposite to the first circumferential direction) and an axial force along the H direction. The rotational force of the braking force along the second circumferential direction is less than the axial force along the H direction. The driving force in the first circumferential direction causes the drive transmission gear 81 to continue rotating in the first circumferential direction. The axial force along the H direction acting on the drive transmission gear 81 and the axial reaction force along the J direction acting on the drive transmission gear 81 cancel each other out, so that the drive transmission gear 81 is in axial force balance. The drive transmission gear 81 stops moving in the axial direction and will not retract into the imaging device (moving along the J direction), nor will it push the idler wheel 80 to move along the J direction, thus preventing wear between the idler wheel 80 and the second drive side plate 83. Moreover, the absence of axial movement of the drive transmission gear 81 can also ensure stable meshing with the drive transmission gear 81, achieving stable transmission.

[0223] Example 11

[0224] The difference between this embodiment and Embodiment 10 is that the structure of the braking component is different.

[0225] like Figure 39 and Figure 40 As shown, in this embodiment, the braking component includes multiple braking elastic elements 44 and braking connecting elements 43, preferably three braking elastic elements 44 and three braking connecting elements 43, but more can also be provided. The braking force generating gear 72a is rotatably supported on the first support shaft 271 of the drum support component 73 via the braking component. Specifically, the braking elastic elements 44 can be compression springs. Multiple braking elastic elements 44 are arranged radially along the braking force generating gear 72a, and one end of the multiple braking elastic elements 44 is spaced apart on the inner circumferential wall of the braking force generating gear 72a along the rotation direction. Connecting protrusions (not shown) can be provided on the inner circumferential wall of the braking force generating gear 72a, and one end of the braking elastic element 44 is sleeved on the connecting protrusion. The other ends of the multiple braking elastic elements 44 are respectively connected to a braking connector 43. The braking connector 43 abuts against the outer circumferential wall of the first support shaft 271, thereby enabling the drum support member 73 to support the braking force generating gear 72a. Specifically, the braking connector 43 is a block-shaped member, and the surface of the braking connector 43 that abuts against the first support shaft 271 is an arc surface (with the same curvature) that matches the outer circumferential wall of the first support shaft 271. The braking connector 43 can rotate around the outer circumferential wall of the first support shaft 271. The side of the braking connector 43 facing away from the arc surface is provided with a connecting part for connecting the braking elastic elements 44. The connecting part is a protruding structure, and the other end of the braking elastic element 44 is sleeved on the protruding structure. The brake elastic element 44 is configured to be in a compressed state, that is, the brake elastic element 44 exerts pressure on the first support shaft 271 through the brake connector 43. Multiple sets of brake elastic elements 44 and brake connector 43 press the first support shaft 271 together, thereby forming a state similar to clamping the first support shaft 271, so that the braking force generating gear 72a is elastically supported on the first support shaft 271.

[0226] like Figure 39 and Figure 40As shown, in this embodiment, since the braking force generating gear 72a is elastically supported on the first support shaft 271, the braking force generating gear 72a can move slightly relative to the first support shaft 271 when subjected to external force, causing its actual axis to deviate from the first support shaft 271. For example, when the braking force generating gear 72a meshes with the second main component gear portion 81d, it is subjected to the radial pressure of the second main component gear portion 81d, causing the braking force generating gear 72a to deviate. At this time, the braking elastic member 44, which is closer to the second main component gear portion 81d in the rotational direction, will be further compressed. Specifically, the braking elastic member 44, which has a component in the direction of the axis connecting the braking force generating gear 72a and the second main component gear portion 81d, will be further compressed. When the braking elastic member 44 is compressed, it will further press the first support shaft 271 through the braking connector 43 connected to it, and a large friction will be generated between the braking connector 43 and the first support shaft 271.

[0227] When the drive starts, the second main component gear part 81d of the drive transmission gear 81 meshes with the braking force generating gear 72a and transmits driving force to it. When the braking force generating gear 72a rotates, the brake connecting member 43 rotates with the braking force generating gear 72a and drives the brake connecting member 43 to rotate. The friction between the brake connecting member 43 and the first support shaft 271 generates braking force. The principle of generating axial force along the H direction is the same as in Embodiment 1, and will not be repeated here.

[0228] In other embodiments, the braking elastic member 44 may be fixedly connected to the first support shaft 271, and the braking connector 43 may be disposed between the braking elastic member 44 and the rotating braking force generating gear 72a. Both the braking connector 43 and the braking elastic member 44 are fixed and do not rotate. The braking force is generated by friction between the braking connector 43 and the inner circumferential wall of the rotating braking force generating gear 72a.

[0229] In other embodiments, the brake connector 43 can be omitted, and the brake elastic member 44 can directly contact the first support shaft 271, generating friction between the end of the brake elastic member 44 and the outer circumferential wall of the first support shaft 271.

[0230] In some other embodiments, a braking component may not be provided. Instead, the braking force is generated by the friction between the braking force generating gear 72a and the supporting structure that cooperates with it on the drum support component 73. For example, the first support shaft 271 and the second annular protrusion 272 on the drum support component 73 in Embodiment 1 are made to fit more tightly with the third annular protrusion 321 of the second through hole 322a on the braking force generating gear 72a. The friction generated during relative rotation is greater, thereby generating braking force and achieving the same effect.

[0231] The other structures of the processing box in this embodiment are the same as those in Embodiment 10, and will not be described again here.

[0232] Example 12

[0233] The difference between this embodiment and embodiments one to eleven is that in this embodiment, when the driving force receiving gear 63 is driven to rotate by the driving transmission gear 81, the driving force receiving gear 63 moves in the axial direction J through the interaction of the first action member 32 and the second action member 33.

[0234] like Figure 42 As shown, a driving force receiving component is provided at one end of the photosensitive drum 62 (specifically the driving end, the J-direction end). The driving force receiving component includes a driving force receiving gear 63, a first action member 32, a second action member 33, and a third elastic member 36.

[0235] In this embodiment, the driving force receiving gear 63 is preferably engaged with the gear portion 81c of the first main component.

[0236] At least one of the first actuating member 32 and the second actuating member 33 is provided with a guide slope. The guide slope is inclined relative to the axial direction of the driving force receiving gear 63. When the driving force receiving gear 63 receives driving force and rotates, the first actuating member 32 can rotate with the driving force receiving gear 63 and act on the second actuating member 33 through the guide slope, so that the first actuating member 32 moves axially in the J direction. The first actuating member 32 drives the driving force receiving gear 63 to move axially in the J direction. In this embodiment, both the first actuating member 32 and the second actuating member 33 are provided with guide slopes. Specifically, the guide slope provided on the first actuating member 32 is the first slope 321a, and the guide slope provided on the second actuating member 33 is the second slope 332a.

[0237] like Figure 42 , Figure 43 and Figure 50As shown, the second action member 33 is fixedly installed at the driving end of the photosensitive drum 62. The second action member 33 is generally a cylindrical component. One end of the second action member 33 in the J direction is recessed inward to form a cavity 331. The cavity 331 is provided with a second action part, a guide post 333, and a second connecting part 334. A plurality of protrusions 335 are arranged circumferentially on the inner wall of the cavity 331. In this embodiment, four protrusions 335 are preferred. The surface of the protrusion 335 facing the J direction is the second action part (i.e., the surface away from the photosensitive drum 62). The second action part is a second inclined surface 332a. The second inclined surface 332a extends radially inclinedly along the second action member 33. The end of the second inclined surface 332a near the axis of the second action member 33 (inner end) is closer to the photosensitive drum 62 in the axial direction than the end near the outer circumferential surface of the second action member 33 (outer end). That is, the inner end of the second inclined surface 332a is located on the H direction side of its outer end. Guide posts 333 are disposed within the cavity 331 of the second actuating member 33. In this embodiment, four guide posts 333 are preferably disposed between two protrusions 335 arranged circumferentially adjacent to each other. The guide posts 333 extend axially along the second actuating member 33, with a portion extending beyond the end face of the second actuating member 33 in the J direction. A second connecting portion 334 is disposed on the bottom of the cavity 331 of the second actuating member 33. The second connecting portion 334 can be a hook structure and is located at the axial position of the second actuating member 33. The protrusions 335, guide posts 333, and second connecting portions 334 can all be integrally formed on the second actuating member 33.

[0238] Furthermore, such as Figure 43 and Figure 44 As shown, the second actuating member 33 is also provided with an abutting mounting portion 336. The abutting mounting portion 336 is a protruding ring or flange provided on the outer circumferential wall of the second actuating member 33, and the abutting mounting portion 336 is provided near the J-direction end of the second actuating member 33. When the second actuating member 33 is mounted on the photosensitive drum 62, there is a gap between the abutting mounting portion 336 and the end of the photosensitive drum 62 (see reference). Figure 49 and Figure 50 See also Figure 44 , Figure 49 and Figure 50 The drum frame is provided with a limiting mounting member 24 that abuts against the abutting mounting part 336. The limiting mounting member 24 is a protruding rib provided on the drum frame. The protruding rib can be provided on the frame member 71. The position of the protruding rib is adapted to the position of the abutting mounting part 336. During installation, the limiting mounting member 24 abuts against the gap between the abutting mounting part 336 of the second action member 33 and the end of the photosensitive drum 62, which can prevent the second action member 33 from moving axially towards the photosensitive drum 62 (i.e., the second action member 33 cannot move in the H direction).

[0239] like Figure 42 , Figures 44 to 46 As shown, the driving force receiving gear 63 meshes with the driving transmission gear 81 to receive driving force, and is connected to the second actuating member 33 in a transmission connection. Specifically, the driving force receiving gear 63 has a mating groove 311a on its surface in the H direction that matches the number and position of the guide posts 333. The mating groove 311a engages with the guide posts 333 on the second actuating member 33 (each guide post 333 is embedded in a corresponding mating groove 311a), so that when the driving force receiving gear 63 is driven to rotate, it drives the second actuating member 33 to rotate synchronously, thereby driving the photosensitive drum 62 to rotate. Optionally, the mating groove 311a can also be provided on the second actuating member 33, and the guide posts 333 that mate with it can be provided on the driving force receiving gear 63. See reference. Figure 45 The driving force receiving gear 63 has an annular groove 312 on its J-direction side end face, see reference. Figure 44 The cover 711 has a fourth annular protrusion 231. During installation, the fourth annular protrusion 231 is embedded in the annular groove 312 to support the driving force receiving gear 63. Figure 50 As shown, there is a gap between the bottom of the annular groove 312 and the end face (H direction end face) of the fourth annular protrusion 231, so that the driving force receiving gear 63 has a moving space in the J direction.

[0240] like Figure 42 and Figure 47 As shown, the first actuating member 32 is disposed on the driving force receiving gear 63. Specifically, the first actuating member 32 is a slider structure, slidably disposed on the driving force receiving gear 63. The driving force receiving gear 63 has a plurality of radially extending first sliding grooves 313 on its end face on the H-direction side. Each first sliding groove 313 has a first actuating member 32 slidably disposed therein. The number and position of the first sliding grooves 313 are adapted to the second actuating member 33 (i.e., preferably four first sliding grooves 313 and preferably four first actuating members 32). A limiting post 3131 protruding along the H-direction is provided in the first sliding groove 313. The first actuating member 32 has a limiting hole 322 that cooperates with the limiting post 3131. The limiting hole 322 can penetrate the first actuating member 32 axially, and the limiting hole 322 is a strip-shaped hole whose extension direction is the same as the extension direction of the corresponding first sliding groove 313. The cooperation between the limiting hole 322 and the limiting post 3131 is used to limit the range of radial movement of the first actuating member 32 within the first sliding groove 313.

[0241] like Figure 42 , Figure 47 and Figure 48As shown, the surface of the first action member 32 facing the second action member 33 (the H-direction side) is the first action part, which is the first inclined surface 321a. The first inclined surface 321a extends radially inclined along the driving force receiving gear 63. The end of the first inclined surface 321a near the axis of the driving force receiving gear 63 (the inner end) is closer to the photosensitive drum 62 in the axial direction than the end near the outer circumferential surface of the driving force receiving gear 63 (the outer end). That is, the inner end of the first inclined surface 321a is located on the H-direction side of its outer end. The first inclined surface 321a and the second inclined surface 332a are parallel to each other (with the same slope). During assembly, the first inclined surface 321a and the second inclined surface 332a abut against each other. When the first actuating member 32 moves radially within the first slide groove 313, the first inclined surface 321a slides relative to the second inclined surface 332a and exerts a pushing force on the second inclined surface 332a in the H direction. Since the abutting mounting portion 336 of the second actuating member 33 abuts against the limiting mounting member 24, it cannot move in the H direction. Therefore, the interaction force exerted by the second inclined surface 332a on the first inclined surface 321a by the second actuating member 33 pushes the driving force receiving gear 63 to move in the J direction (the direction closer to the idler wheel 80 and the direction away from the photosensitive drum 62).

[0242] like Figure 42 , Figures 46 to 50 As shown, the third elastic element 36 connects the driving force receiving gear 63 and the second actuating element 33. Specifically, the third elastic element 36 is a tension spring. The end face of the driving force receiving gear 63 in the H direction is provided with a first connecting part 314 near the axis. The first connecting part 314 can be a hook structure. One end of the tension spring is connected to the first connecting part 314 of the driving force receiving gear 63, and the other end is connected to the second connecting part 334 of the second actuating element 33. The third elastic element 36 is configured to be stretched and deformed when the driving force receiving gear 63 moves axially away from the photosensitive drum 62.

[0243] like Figures 42 to 50As shown, when the processing box is installed in the main component A of the imaging device, the driving force receiving gear 63 meshes with the first main component gear portion 81c of the driving transmission gear 81. When the driving force receiving gear 63 is driven to rotate by the first main component gear portion 81c, multiple first action members 32 move radially within the first slide groove 313 under the action of rotational centrifugal force (moving radially away from the axis of the driving force receiving gear 63). At this time, the first action part (first inclined surface 321a) pushes the second action part (second inclined surface 332a), applying a pushing force to the second action member 33 in the H direction. Since the second action member 33 is restricted by the limiting mounting member 24, it cannot move in the H direction. Therefore, the driving force receiving gear 63... The first action 32 is pushed by the reaction force of the second action 33 to move axially away from the photosensitive drum 62 (J direction), so that the tension spring (third elastic member 36) is stretched and deformed, thereby pushing the drive transmission gear 81 meshing with the drive force receiving gear 63 to move in the direction of the idler wheel 80 (J direction) (which also prevents the drive transmission gear 81 from moving in the H direction), so that the drive transmission gear 81 will not disengage from the idler wheel 80, ensuring that the drive force is stably transmitted to the processing box. Furthermore, even if the drive transmission gear 81 retracts in the J direction, since the drive force receiving gear 63 also moves in the J direction, it is possible to prevent the drive force receiving gear 63 from disengaging from the first main component gear part 81c.

[0244] When the main component A of the imaging device stops outputting driving force, the driving force receiving gear 63 stops rotating, the tension spring (third elastic element 36) recovers its deformation, drives the driving force receiving gear 63 to move and reset in the H direction, and pushes the first action element 32 to move and reset radially in the first slide groove 313 (moving radially closer to the axis of the driving force receiving gear 63).

[0245] Example 13

[0246] The difference between this embodiment and embodiment twelve is that the structures of the first action member 32 and the second action member 33 are different.

[0247] like Figure 51 , Figure 52 and Figure 54 As shown, in this embodiment, the first actuating member 32 is integrally disposed on the driving force receiving gear 63. The first actuating member 32 is specifically a long strip-shaped member that extends along the H direction from the H-direction surface of the driving force receiving gear 63. Multiple first actuating members 32 are provided and arranged at intervals along the circumference of the driving force receiving gear 63. In this embodiment, four are preferred. The first actuating member 32 has a first actuating part on its radial outer wall (the outer wall facing away from the rotation axis of the driving force receiving gear 63). The first actuating part is a sliding column 321b, which protrudes radially outward.

[0248] like Figure 51, Figure 52 and Figure 54 As shown, the second action member 33 is fixedly disposed at the end of the photosensitive drum 62 in the J direction. The inner wall of the second action member 33 is provided with a second action part that cooperates with the first action part. Specifically, the second action part is a second slide groove 332b recessed in the inner wall of the second action member 33. The second slide groove 332b extends obliquely relative to the axial direction (J direction and H direction) of the driving force receiving gear 63. A guide slope is formed on the second slide groove 332b. The slide post 321b is embedded in the second slide groove 332b and can move along the second slide groove 332b.

[0249] like Figures 51 to 54 As shown, in this embodiment, the connection of the third elastic member 36 is the same as in Embodiment 1. In the initial state where no driving force is received, the third elastic member 36 positions the driving force receiving gear 63 close to the second action member 33, that is, the first action part (sliding column 321b) is located at one end of the second sliding groove 332b near the H direction; when the driving force receiving gear 63 is driven to rotate by the first main component gear part 81c of the driving transmission gear 81 (in order to... Figure 51 For example, looking from the J direction to the H direction, the driving force receiving gear 63 rotates counterclockwise, and the slide column 321b moves along the second slide groove 332b from the end near the H direction to the end near the J direction, so that the driving force receiving gear 63 moves axially away from the photosensitive drum 62 (J direction) while rotating, thereby pushing the drive transmission gear 81 to move towards the idler wheel 80 to prevent the drive transmission gear 81 from disengaging from the idler wheel 80; thereafter, the first action part engages with the second action part to transmit the driving force from the driving force receiving gear 63 to the second action member 33, thereby driving the photosensitive drum 62 to rotate.

[0250] The other structures and operating methods of the processing box in this embodiment are the same as those in Embodiment Twelve, and will not be described again here.

[0251] Example 14

[0252] The difference between this embodiment and embodiment thirteen is that the structures of the first action member 32 and the second action member 33 are different.

[0253] like Figures 55-56 As shown, a driving force receiving component is provided at one end of the photosensitive drum 62 (specifically the driving side, the J-direction end). The driving force receiving component includes a driving force receiving gear 63, a first action member 32, a second action member 33, and a third elastic member 36.

[0254] In this embodiment, the driving force receiving gear 63 is preferably engaged with the gear portion 81c of the first main component.

[0255] like Figure 57 and Figure 58As shown, the driving force receiving gear 63 has a cylindrical boss structure, including a first end and a second end. The first end has a first actuating member 32, and the second end has teeth 312a. In the axial direction of the driving force receiving gear, the first actuating member 32 is further away from the photosensitive drum 62 than the teeth 312a, and the diameter of the first actuating member 32 is smaller than the diameter of the teeth 312a. Specifically, in this embodiment, the outer peripheral wall of the first actuating member 32 has a second groove 332b. The second groove 332b has an angle of inclination relative to the J and H directions, and a guiding slope is formed on the second groove 332b. Specifically, the second groove 332b can be a spiral groove with a helical shape. Preferably, in this embodiment, there are two second grooves 332b, which are arranged opposite to each other. Furthermore, the side of the first actuating member 32 away from the teeth 312a also has a first mounting hole 313a for mounting the driving force receiving gear 63 onto the drum frame 22. Furthermore, the tooth portion 312a is provided with helical teeth with the same helix angle as the first main component gear portion 81c or the second main component gear portion 81d, and the tooth portion 312a is provided with a third through hole 312b for accommodating the second action member 33 on the side near the photosensitive drum 62.

[0256] See Figure 59 The second actuating member 33 is a cylindrical boss structure, including a third connecting portion 321c and a fourth connecting portion 322c. The diameter of the third connecting portion 321c is smaller than the diameter of the third through hole 312b, allowing the second actuating member 33 to be rotatably connected to the driving force receiving gear 63 via the third connecting portion 321c. A sliding post 321b is provided on the outer peripheral wall of the third connecting portion 321c, protruding radially from the outer peripheral wall. Preferably, in this embodiment, two sliding posts 321b are provided, symmetrically arranged along the axis of the third connecting portion 321c. When the third connecting portion 321c is connected to the driving force receiving gear 63, the sliding post 321b is accommodated in the second sliding groove 332b and engages with it. Furthermore, the diameter of the fourth connecting portion 322c is smaller than or equal to the inner diameter of the photosensitive drum 62, forming a transition fit with the photosensitive drum 62. A contact mounting portion 336 is also provided between the third connecting portion 321c and the fourth connecting portion 322c. The diameter of the contact mounting portion 336 is the same as the diameter of the photosensitive drum 62. When the second actuating member 33 is fixedly connected to the photosensitive drum 62 through the fourth connecting portion 322c, the contact mounting portion 336 abuts against the end of the photosensitive drum 62 in the J direction.

[0257] For further details, please refer to [link / reference]. Figure 59 and Figure 61The third connecting portion 321c of the second actuating member 33 is provided with a second mounting hole 321d, which is a blind hole. The corresponding drum frame 22 has a first through hole 231a on its driving side (J-direction end). When the driving assembly is installed on the processing box 100, the first through hole 231a is located at the J-direction end of the second mounting hole 321d. The first through hole 231a, the first mounting hole 313a, and the second mounting hole 321d are arranged sequentially along the axial direction of the photosensitive drum 22, with the first mounting hole 313a located between the first through hole 231a and the second mounting hole 321d. Specifically, in this embodiment, the processing box 100 passes through the first through hole 231a, the first mounting hole 313a, and the second mounting hole 321d sequentially via a shaft pin 25, thereby allowing the driving force receiving gear 63 and the second actuating member 33 to be rotatably supported in the drum frame 22.

[0258] like Figure 60 and Figure 61 As shown, the third elastic element 36 is installed at the J-direction end of the driving force receiving gear 63. Specifically, in this embodiment, the third elastic element 36 is preferably a compression spring. When the driving force receiving gear 63 is installed on the processing box 100, the compression spring is sleeved on the shaft pin 25, with one end abutting against the drum frame 22 and the other end abutting against the driving force receiving gear 63. When the driving force receiving gear 63 starts to rotate after receiving the driving force from the driving transmission gear 81, under the action of the second slide groove 332b and the slide column 321b, the driving force receiving gear 63 begins to move axially towards the J-direction end, at which time the compression spring is compressed; when the driving force receiving gear 63 stops rotating, the compression spring returns to its original shape, and the driving force receiving gear 63 resets under the action of the compression spring.

[0259] like Figure 62 As shown, when the processing box 100 is installed in the main component A of the imaging device, the driving force receiving gear 63 meshes with the first main component gear portion 81c of the driving transmission gear 81. At this time, the width (meshing width) of the portion of the driving force receiving gear 63 that meshes with the first main component gear portion 81c in the axial direction is approximately 1 / 4 of the maximum tooth width measured along the axial direction of the driving force receiving gear 63, and the position of the slide post 321b in the second slide groove 332b is closer to the J direction relative to the H direction. At this time, the driving force receiving gear 63 is in its initial state. Figure 63As shown, when the driving force receiving gear 63 is driven to rotate by the first main component gear part 81c, since the second action member 33 is fixedly connected to the photosensitive drum 22 and cannot move in the axial direction, the driving force receiving gear 63 moves in the axial direction away from the photosensitive drum 62 (J direction) relative to the second action member 33 under the action of the second slide groove 332b and slide column 321b, so that the compression spring (third elastic member 36) is compressed. At this point, the axial width (meshing width) of the portion of the drive force receiving gear 63 that meshes with the first main component gear portion 81c is approximately more than half the maximum tooth width measured along the axial direction of the drive force receiving gear 63. Furthermore, the position of the slide column 321b within the second slide groove 332b is closer to the H direction relative to the J direction. Subsequently, the drive force continues to be transmitted to the drive force receiving gear 63 via the first main component gear portion 81c. The drive force receiving gear 63 drives the slide column 321b to rotate via the second slide groove 332b, which in turn drives the photosensitive drum 62 to rotate via the second actuating member 33, thereby stably transmitting the drive force to the processing box 100. In this design, even if the drive transmission gear 81 retracts in the J direction, the drive force receiving gear 63 also moves in the J direction, thus preventing the drive force receiving gear 63 from disengaging from the first main component gear portion 81c.

[0260] When the main component A of the imaging device stops outputting driving force, the driving force receiving gear 63 stops rotating, the compression spring (third elastic element 36) recovers its deformation, and drives the driving force receiving gear 63 to move in the H direction to reset and return to the initial state.

[0261] Example 15

[0262] The difference between this embodiment and embodiments one through fourteen is that this embodiment provides an abutment portion, which is used to abut against the end of the gear portion 81c of the first main component to prevent the drive transmission gear 81 from moving in the H direction or to push the drive transmission gear 81 to move in the J direction. Specifically, in this embodiment, the abutment portion is used to push the drive transmission gear 81 to move in the J direction to prevent the drive transmission gear 81 from disengaging from the idler gear 80.

[0263] like Figures 64-65 As shown, a driving force receiving component is provided at one end of the photosensitive drum 62 (specifically the driving end, the J-direction end). The driving force receiving component includes a driving force receiving gear 63, an action member, and a fourth elastic member 34 and a fifth elastic member 35. The action member includes a first action member 32 and a second action member 33.

[0264] like Figures 65 to 67As shown, the driving force receiving gear 63 is used to mesh with the driving transmission gear 81 to receive driving force. The driving force receiving gear 63 is provided with a toothed portion 312a, a first mounting hole 313a, a second connecting portion 314, a first sliding groove 313, and a limiting post 3131. In this embodiment, the driving force receiving gear 31 preferably meshes with the first main component gear portion 81c.

[0265] Furthermore, the driving force receiving gear 63 is provided with a first mounting hole 313a and a second connecting portion 314. For example... Figure 66 , Figure 67 and Figure 73 As shown, the first mounting hole 313a is a blind hole located on the J-direction side of the driving force receiving gear 63. The driving bearing 24b forms a shaft-hole connection with the first mounting hole 313a, allowing the driving force receiving gear 63 to be rotatably supported by the driving bearing 24b. The second connecting part 314 is a protrusion that protrudes towards the H-direction side. In this embodiment, there are preferably four second connecting parts 314, spaced apart circumferentially. The driving force receiving gear 63 can be tightly fitted to the axial end of the photosensitive drum 62 through the cooperation of the second connecting parts 314, thereby driving the photosensitive drum 62 to rotate. In addition, the driving force receiving gear 63 has a plurality of radially extending first grooves 313 on the end face on the H-direction side. The first grooves 313 are located between two adjacent second connecting parts 314 arranged circumferentially. In this embodiment, there are preferably four first grooves 313, which are cross-shaped. Furthermore, the first slide groove 313 is provided with a limiting post 3131 protruding along the H direction, which can cooperate with the first action member 32 and the second action member 33, so that the first action member 32 and the second action member 33 can move within the first slide groove 313.

[0266] like Figures 68 to 72As shown, the first actuating member 32 and the second actuating member 33 are disposed on the driving force receiving gear 63. Specifically, the first actuating member 32 and the second actuating member 33 are slider structures, slidably disposed on the driving force receiving gear 63. In this embodiment, the first actuating member 32 and the second actuating member 33 are preferably two in number, arranged circumferentially on the driving force receiving gear 63 at intervals, and disposed in each first sliding groove 313. In this embodiment, the first actuating member 32 and the second actuating member 33 are arranged in a cross shape (i.e., the first actuating member and the second actuating member are arranged 90 degrees apart circumferentially), and are symmetrically arranged face to face in the first sliding groove 313 (i.e., the two first actuating members are arranged 180 degrees apart circumferentially on the driving force receiving gear, and the two second actuating members are arranged 180 degrees apart circumferentially on the driving force receiving gear). Further, the first actuating member 32 and the second actuating member 33 are respectively provided with abutting portions on the side facing the J direction. The abutting portions are used to abut with the end of the gear part of the first main component. Specifically, the abutting portions are provided with actuating inclined surfaces, which are inclined relative to the radial direction of the driving force receiving gear. Specifically, the action slope includes a first action slope 324 disposed on the first action member 32 and a second action slope 334a disposed on the second action member 33. The first action slope 324 and the second action slope 334a extend radially inclined along the driving force receiving gear 63. The end of the first action slope 324 and the second action slope 334a near the axis of the driving force receiving gear 63 (inner end) is further away from the photosensitive drum 62 in the axial direction than the end of the first action slope 324 and the second action slope 334a near the outer circumferential surface of the driving force receiving gear 63 (outer end). That is, the inner end of the first action slope 324 and the second action slope 334a is located on the J-direction side of its outer end. The first actuating member 32 and the second actuating member 33 are also provided with limiting holes 322. The limiting holes 322 are waist-shaped holes, and their extension direction is the same as the extension direction of the first sliding groove 313. The limiting holes 322 cooperate with the limiting post 3131, thereby limiting the range of radial movement of the first actuating member 32 and the second actuating member 33 in the first sliding groove 313.

[0267] In addition, see Figure 68 and Figure 70 The first actuating member 32 and the second actuating member 33 are further provided with a sixth connecting portion 323a and a seventh connecting portion 333a. The sixth connecting portion 323a can be a hook structure, which is located on the side of the first actuating member 32 away from the first actuating inclined surface 324. The seventh connecting portion 333a can be a columnar structure, which is located on the side of the second actuating member 33 away from the second actuating inclined surface 334a. The sixth connecting portion 323a and the seventh connecting portion 333a can be integrally formed on the first actuating member 32 and the second actuating member 33. (See reference...) Figure 72The two first actuating members 32 can be connected by a fourth elastic member 34, that is, one end of the fourth elastic member 34 is connected to the sixth connecting portion 323a of one first actuating member 32, and the other end is connected to the sixth connecting portion 323a of the other first actuating member 32. The two second actuating members 33 are connected by a fifth elastic member 35, one end of the fifth elastic member 35 is connected to the seventh connecting portion 333a of one second actuating member 33, and the other end is connected to the seventh connecting portion 333a of the other second actuating member 33. Specifically, in this embodiment, the fourth elastic member 34 and the fifth elastic member 35 are preferably tension springs, which are configured to be stretched and deformed when the driving force receiving gear 63 rotates, so that the first actuating member 32 and the second actuating member 33 can slide relative to the driving force receiving gear 63 in the first sliding groove 313. In addition, a notch 32a is formed on the side of the first actuating member 32 away from the first actuating inclined surface 324, and the sixth connecting portion 323a is formed on the notch 32a. When the first actuating member 32 and the second actuating member 33 are mounted on the driving force receiving gear 63, the notch 32a provides mounting space for the fourth elastic member 34 and the fifth elastic member 35.

[0268] like Figures 64 to 77 As shown, when the processing box is installed inside the main component A of the imaging device, the drive force receiving gear 63 meshes with the first main component gear portion 81c of the drive transmission gear 81. The drive force receiving gear 63 is driven to rotate by the drive transmission gear 81 (e.g., Figure 18 As shown, the drive transmission gear 81 rotates in the A2 direction, i.e., counterclockwise; the drive force receiving gear 63 rotates in the A1 direction, i.e., clockwise. At this time, the first action member 32 and the second action member 33 move radially in the first slide groove 313 under the action of the rotational centrifugal force (moving radially away from the axis of the drive force receiving gear 63). At this time, the fourth elastic member 34 and the fifth elastic member 35 are stretched, and the first action inclined surface 324 or the second action inclined surface 334a pushes the drive transmission gear 81, applying a pushing force to the drive transmission gear 81 in the J direction, thereby pushing the drive transmission gear 81 meshing with the drive force receiving gear 63 to move in the direction of the idler wheel 80 (J direction), so that the drive transmission gear 81 will not disengage from the idler wheel 80, ensuring that the drive force is stably transmitted to the processing box.

[0269] When the main component A of the imaging device stops outputting driving force, the driving force receiving gear 63 stops rotating, the fourth elastic element 34 and the fifth elastic element 35 recover their deformation, and drive the first action element 32 and the second action element 33 to move radially within the first slide groove 313 to reset (moving radially closer to the axis of the driving force receiving gear 63).

[0270] Example 16

[0271] The difference between this embodiment and Embodiment Fifteen is that the structure of the abutment portion is different.

[0272] like Figure 6 , Figure 7 As shown, a driving force receiving gear 63 is provided at one end of the photosensitive drum 62 (specifically, the driving end, the J-direction end). This driving force receiving gear 63 is directly or indirectly connected to the driving end of the photosensitive drum 62 and is used to mesh with the driving transmission gear 81 to receive driving force, thereby driving the processing cartridge to perform the developing task. Specifically, in this embodiment, the driving force receiving gear 63 includes a tooth portion 312a, a first annular protrusion 311, and a fifth connecting portion 312b. In the axial direction of the photosensitive drum 62, the first annular protrusion 311, the tooth portion 312a, and the fifth connecting portion 312b are arranged sequentially, and the fifth connecting portion 312b is closer to the photosensitive drum 62 than the first annular protrusion 311. The driving force receiving gear 63 is connected to the drum support member 73 through the first annular protrusion 311 and is fixedly connected to the photosensitive drum 62 through the fifth connecting portion 312b, thereby driving the photosensitive drum 62 to rotate. Specifically, in this embodiment, the first annular protrusion 311 is recessed inward to form a cavity, and a first mounting hole 313a is formed in the cavity. The axis of the first mounting hole 313a is parallel to the axis of the driving force receiving gear 63, and the center of the first mounting hole 313a is at the same position as the center of the driving force receiving gear 63. The driving force receiving gear 63 is rotatably supported on the drum support member 73 through the first mounting hole 313a.

[0273] Furthermore, the drive force receiving gear 63 meshes with the drive transmission gear 81 via its teeth 312a, thereby receiving drive force. It can also directly or indirectly mesh with, for example, the developing roller gear mounted at the axial end of the developing roller 11 or other associated gears, to drive rotating components such as the developing roller 11 to rotate, thus driving the entire processing cartridge to operate. In this embodiment, the drive force receiving gear 63 preferably meshes with the first main component gear portion 81c.

[0274] Furthermore, such as Figure 7As shown, the developing support member 13 is provided with an abutment portion 24a, which is a rib formed on the developing support member 13 and protrudes from the developing support member 13 in the width direction of the processing cartridge. Alternatively, the abutment portion 24a can also be provided on the developing frame 12, as long as the abutment portion 24a can abut against the end of the drive transmission gear 81 near the photosensitive drum 62 when the processing cartridge is mounted on the main assembly A of the imaging device. Specifically, in this embodiment, the abutment portion 24a is formed from back to front on the developing support member 13 in the width direction of the processing cartridge. When the processing box is installed onto the main component A of the imaging device, the abutment portion 24a abuts against the side of the first main component gear portion 81c away from the idler wheel 80 (i.e., the H-direction end of the first main component gear portion 81c), applying a thrust to the first main component gear portion 81c, forcing the first main component gear portion 81c to move axially toward the idler wheel 80 in the J-direction. Alternatively, the abutment portion 24a only abuts against the first main component gear portion 81c without applying additional thrust, i.e., only preventing the first main component gear portion 81c from moving in the H-direction. The difference between the two methods lies in the position of the abutment portion 24a. In the former scheme, the position of the abutment portion 24a interferes with the first main component gear portion 81c, thus generating a thrust. In the latter scheme, the position of the abutment portion does not interfere with the first main component gear portion 81c, thus generating no thrust. By pushing or abutting the first main component gear portion 81c with the abutting part, the drive transmission gear 81 can be moved in the J direction or at least prevented from moving in the H direction, thereby reducing the risk of the drive transmission gear 81 disengaging from the idler gear 80.

[0275] like Figures 8 to 10As shown, a restraining element 40 is provided on the conductive end of the photosensitive drum 62. Specifically, in this embodiment, the restraining element 40 is a torsion spring. The torsion spring is coiled around the outer circumferential wall of the cylindrical portion of the conductive bearing 212 at the conductive end of the photosensitive drum 62 and holds the conductive bearing 212 tightly. The arm 40a of the torsion spring is engaged and fixed on the drum support member 73. Specifically, the drum support member 73 is provided with a locking groove 231b in the circumferential direction. When the torsion spring is coiled around the conductive bearing 212, its arm 40a is accommodated in the locking groove 231b and abuts against the drum support member 73. When the photosensitive drum 62 rotates, the conductive bearing 212 rotates synchronously. Since the arm 40a of the torsion spring is fixed to the drum support member 73, the torsion spring does not rotate with the conductive bearing 212. Because the torsion spring is attached to the outer circumferential wall of the conductive bearing 212, friction is generated between the conductive bearing 212 and the torsion spring when the latter rotates. This friction generates a braking force on the photosensitive drum 62 through the conductive bearing 212, which acts opposite to the driving force, thus stabilizing the rotation of the photosensitive drum 62. Furthermore, the braking element 40 can also provide a resisting force in the J-direction in the axial direction of the photosensitive drum 62, preventing the photosensitive drum 62 from moving in the H-direction. This prevents the photosensitive drum 62 from driving the driving force receiving gear 63 to move in the H-direction, thereby reducing the risk of the driving force receiving gear 63 disengaging from the first main component gear portion 81c.

[0276] like Figures 1 to 10 As shown, when the processing box is installed in the main component A of the imaging device, the driving force receiving gear 63 meshes with the first main component gear portion 81c, and the driving force receiving gear 63 is driven to rotate by the driving transmission gear 81. At this time, the first main component gear portion 81c moves axially towards the idler wheel 80 (J direction) under the action of the abutment portion 24a, so that the driving transmission gear 81 will not disengage from the idler wheel 80, ensuring that the driving force is stably transmitted to the processing box. At the same time, the processing box provides a braking force to resist the load when the driving force receiving gear 63 rotates by setting a braking element 40 at the conductive end, so that the photosensitive drum 62 rotates more smoothly.

[0277] This embodiment also provides a modified implementation method:

[0278] In this modified embodiment, the braking element 40 is no longer a torsion spring, but damping oil. By applying damping oil to the side wall of the end of the conductive bearing 212, when the photosensitive drum 62 rotates, the conductive bearing 212 generates a braking force that acts on the photosensitive drum 62, making the photosensitive drum 62 rotate more smoothly.

[0279] Example 17

[0280] The difference between this embodiment and embodiment sixteen is that the position of the abutment portion 24a is different.

[0281] like Figures 11 to 15As shown, in this embodiment, the abutment portion 24a is a rib integrally formed on the drum support member 73, protruding from the side of the drum support member 73 near the photosensitive drum 62 in the width direction of the processing box, specifically protruding from back to front on the drum support member 73. When the processing box is installed in the main assembly A of the imaging device, the abutment portion 24a abuts against the end of the first main assembly gear portion 81c near the photosensitive drum 62.

[0282] Furthermore, such as Figure 11 and Figure 13 As shown, the driving force receiving gear 63 is housed in the drum support member 73. One end of the drum support member 73 has a first hole 23a, and the other end has a second hole 23b. The first hole 23a is further away from the photosensitive drum 62 than the second hole 23b. The driving force receiving gear 63 is located between the first hole 23a and the second hole 23b. For details, please refer to [reference needed]. Figure 14 and Figure 15 In this embodiment, a first mounting hole 313a is also formed in the first annular protrusion 311 of the driving force receiving gear 63. A shaft pin 25 is inserted into the first hole 23a and then into the first mounting hole 313a of the driving force receiving gear 63, so that the driving force receiving gear 63 is rotatably supported on the drum support member 73. The fifth connecting part 312b of the driving force receiving gear 63 passes through the second hole 23b of the drum support member 73 and is connected to the connecting member 21a located at the end of the photosensitive drum 62, thereby driving the photosensitive drum 62 to rotate.

[0283] like Figures 11 to 14 As shown, when the processing cartridge is installed in the main assembly A of the imaging device, the abutment portion 24a of the drum support member 73 abuts against the side of the first main assembly gear portion 81c near the photosensitive drum 62. When the drive force receiving gear 31 is driven to rotate by the drive transmission gear 81, the abutment portion 24a forces the first main assembly gear portion 81c to move towards the idler wheel 80 (i.e., in the J direction) (or prevents the first main assembly gear portion 81c from moving away from the idler wheel 80 (i.e., in the H direction)) to prevent the drive transmission gear 81 from disengaging from the idler wheel 80, ensuring that the drive force is stably transmitted to the processing cartridge. At the same time, the processing cartridge provides a braking element 40 at its conductive end to apply a braking force against the load when the drive force receiving gear 63 rotates, making the photosensitive drum 62 rotate more smoothly.

[0284] The other structures and operating methods of the processing box in this embodiment are the same as those in Embodiment Sixteen, and will not be described again here.

[0285] Example 18

[0286] The difference between this embodiment and the previous embodiment is that in this embodiment, the driving force receiving gear 63 is moved radially toward the driving transmission gear 81 by a pushing device.

[0287] like Figure 89 and Figure 90 As shown, a driving force receiving gear 63 is provided at one end of the photosensitive drum 62 (specifically, the driving end, the J-direction end). The driving force receiving gear 63 meshes with the driving transmission gear 81 to receive driving force, thereby driving the photosensitive drum 62 to rotate along its rotation axis. The driving force receiving gear 63 can be integrally formed on the driving end of the photosensitive drum 62, or it can be a separate structure, fixedly set on the driving end of the photosensitive drum 62 by means of snapping, gluing, welding, etc. The driving force receiving gear 63 has a through hole on its J-direction side end face, and the drum support member 73 also has a through hole. During installation, a pin passes through the through holes on the drum support member 73 and the driving force receiving gear 63 to support the driving force receiving gear 63. The driving force receiving gear 63 is a composite gear, meaning it has two tooth profiles. The driving force receiving gear 63 includes a first gear portion 63c (i.e., tooth 312a in the above embodiment) and a second gear portion 63d, which are coaxially arranged. The first gear portion 63c and the second gear portion 63d are integrally formed. There is no clearance between the first gear portion 63c and the second gear portion 63d in the axial direction. The first gear portion 63c is closer to the photosensitive drum 62 in the axial direction than the second gear portion 63d, i.e., the first gear portion 63c is located on the H-direction side of the second gear portion 63d. The rotation direction of the first gear portion 63c is the same as that of the second gear portion 63d. The helix angle β2 of the second gear portion 63d is greater than the helix angle β1 of the first gear portion 63c. The helix angle β1 of the first gear portion 63c is the same as the helix angle α1 of the first main component gear portion 81c, but in the opposite direction of rotation; the helix angle β2 of the second gear portion 63d is the same as the helix angle α2 of the second main component gear portion 81d, but in the opposite direction of rotation. In other embodiments, the driving force receiving gear 63 may not be a compound gear, that is, the driving force receiving gear 63 may only be provided with one of the first gear portion 63c and the second gear portion 63d, and the driving force receiving gear 63 may mesh with one of the first main component gear portion 81c and the second main component gear portion 81d, while the other may idle.

[0288] like Figure 88 and Figure 90As shown, when the processing box is installed inside the main component A of the imaging device, the driving force receiving gear 63 meshes with the driving transmission gear 81, the first gear portion 63c meshes with the first main component gear portion 81c to receive the driving force, and the second gear portion 63d meshes with the second main component gear portion 81d to receive the braking force. The driving force receiving gear 63 receives the driving force and rotates in the rotation direction (first circumferential direction), while the braking force is in the opposite direction to the driving force (i.e., the braking force is in the second circumferential direction opposite to the first circumferential direction), and the driving force is greater than the braking force.

[0289] Because the second gear portion 63d is integrally formed with the first gear portion 63c, this structure prevents the second gear portion 63d from rotating relative to the first gear portion 63c in the second circumferential direction. However, since the driving force receiving gear 63 is made of resin material, it can undergo slight deformation. Therefore, the second gear portion 63d, when subjected to braking force, can rotate slightly relative to the first gear portion 63c in the second circumferential direction before its rotation stops and its position is fixed. The braking force received by the second gear portion 63d acts on (transmits) the first gear portion 63c. Similarly, the driving force received by the first gear portion 63c also acts on (transmits) the second gear portion 63d.

[0290] In this way, the state in which the first gear part 63c meshes with the first main component gear part 81c to receive driving force and the second gear part 63d meshes with the second main component gear part 81d to receive braking force is such that there is no backlash (tooth clearance) between the driving force receiving gear 63 and the driving transmission gear 81 in the rotational direction (first circumferential direction). Thus, the driving force receiving gear 63 and the driving transmission gear 81 are rotated and driven in the first circumferential direction while maintaining a backlash-free state, and the two gears will not disengage, thereby smoothly transmitting the drive.

[0291] Furthermore, such as Figure 91 As shown, the processing box is also equipped with a pushing device, which is used to move the driving force receiving gear 63 in the radial direction toward the driving transmission gear 81, so that the driving force receiving gear 63 is close to the driving transmission gear 81 and the two will not disengage in the rotational direction, thereby smoothly transmitting the power.

[0292] Specifically, the pushing device has an elastic force that acts on the processing box as a pushing force. The direction of the elastic force is towards the drive transmission gear 81, causing the processing box and the drive force receiving gear 63 mounted on the processing box to move together in the radial direction toward the drive transmission gear 81. The pushing device is mounted on the drum frame 22, specifically at the opposite end of the drum frame 22 in the width direction from the photosensitive drum 62. In the length direction of the processing box, the pushing device can be mounted only at the drive end of the processing box, or it can be mounted at both ends of the length direction of the processing box.

[0293] like Figure 91 As shown, the pushing device includes a pushing member 41a and a pushing elastic member 42a. One end of the pushing elastic member 42a is connected to the drum frame 22, and the other end is connected to the pushing member 41a. When the processing box is installed in the main component A of the imaging device, the pushing member 41a abuts against the components inside the main component A of the imaging device, is pushed and moved, and compresses the pushing elastic member 42a to generate elastic force. This elastic force acts on the processing box, forcing the driving force receiving gear 63 to move radially towards the driving transmission gear 81. The pushing member 41a is preferably a block-shaped component, and the pushing elastic member 42a is preferably a compression spring, but it can also be an elastic sponge, elastic rubber, spring sheet, or other component capable of generating elastic force.

[0294] Furthermore, such as Figure 91 As shown, the drum frame 22 is also provided with a mounting portion 27 for accommodating the pushing elastic member 42a and the pushing member 41a. The mounting portion 27 is a sliding groove structure. The pushing member 41a is slidably connected to the mounting portion 27, and the pushing elastic member 42a is accommodated in the mounting portion 27 with its two ends respectively abutting against the pushing member 41a and the mounting portion 27. Preferably, the pushing member 41a is engaged with the mounting portion 27 by a snap-fit ​​structure. The snap-fit ​​structure includes an elastic hook 411 provided on the pushing member 41a and a groove 271a provided on the mounting portion 27 that cooperates with the elastic hook 411.

[0295] In some other embodiments, the pushing device may consist only of a pushing elastic element 42a, such as the aforementioned compression spring, elastic plate, elastic rubber, spring sheet, etc., which directly abuts against the internal components of the imaging device main assembly A. The pushing elastic element 42a may also be an elastic arm, with one end connected to the drum frame 22 and the other end extending away from the driving force receiving gear 63. When it abuts against the internal components of the imaging device main assembly A, the elastic arm deforms towards the driving force receiving gear 63, thereby generating elastic force.

[0296] In this embodiment, the processing box is equipped with a pushing device that forces the driving force receiving gear 63 to move radially towards the driving transmission gear 81 when the processing box is installed in the imaging device and receives driving force rotation. This ensures that the driving force receiving gear 63 and the driving transmission gear 81 do not disengage in the rotational direction, thus enabling smooth transmission. In addition, the driving force receiving gear 63 is a compound toothed gear that can simultaneously receive driving force and braking force, ensuring that the driving force receiving gear 63 and the driving transmission gear 81 mesh in a balanced state and that the two gears do not disengage, further ensuring smooth transmission of driving force.

[0297] In some other embodiments, the pushing device can be omitted, and the driving force receiving gear 63 with compound tooth profile can receive both driving force and braking force at the same time, so that the driving force receiving gear 63 and the driving transmission gear 81 mesh in a balanced state, and the transmission can be carried out smoothly.

[0298] Example 19

[0299] The difference between this embodiment and embodiment nineteen is that the structure of the driving force receiving gear 63 is different, and the way braking force is provided is different. In this embodiment, braking force is provided through a braking component.

[0300] like Figure 92 and Figure 93 As shown, in this embodiment, the driving force receiving gear 63 is not a compound toothed gear, but only includes a first gear portion 63c that meshes with the driving transmission gear to receive driving force. That is, the driving force receiving gear 63 only receives driving force and does not receive braking force. The first gear portion 63c of the driving force receiving gear 63 meshes with either the first main component gear portion 81c or the second main component gear portion 81d in the driving transmission gear 81 to receive driving force and transmit it to the photosensitive drum 62, while the other main component gear portion of the driving transmission gear 81 idles. When the helix angle of the driving force receiving gear 63 is set to be equal to and opposite in rotation to the helix angle of the first main component gear portion 81c, the driving force receiving gear 63 meshes with the first main component gear portion 81c to receive driving force. Since the helix angles of the first main component gear portion 81c and the second main component gear portion 81d are different, the driving force receiving gear 63 cannot mesh with the second main component gear portion 81d, and the second main component gear portion 81d rotates idly. Similarly, when the helix angle of the driving force receiving gear 63 is set to be equal to and opposite in rotation to the helix angle of the second main component gear portion 81d, the driving force receiving gear 63 meshes with the second main component gear portion 81d to receive driving force, and the first main component gear portion 81c rotates idly. In this embodiment, preferably, the first gear portion 63c of the driving force receiving gear 63 meshes with the first main component gear portion 81c.

[0301] Since the driving force receiving gear 63 cannot receive braking force from the driving transmission gear 81, a braking element (not shown) is provided at the non-driving end of the photosensitive drum 62 to provide braking force in order to ensure smooth transmission of the driving force receiving gear 63. Specifically, the braking element can be damping oil, which is applied to the inner wall of the drum frame 22 and / or the drum support member 73. The damping oil contacts the non-driving end of the photosensitive drum 62 and generates a damping force as a braking force when the photosensitive drum 62 rotates, so that the photosensitive drum 62 reaches a balanced state under the action of driving force and braking force, and achieves smooth transmission.

[0302] Alternatively, the braking element can be an object made of rubber, sponge or other materials set on the drum frame 22, which generates frictional force by contacting the non-driving end of the photosensitive drum 62 as a braking force; the braking element can also be an elastic component such as a torsion spring, which generates torque as a braking force when the photosensitive drum 62 rotates; all these methods can achieve the same effect.

[0303] The other structures and operating methods of the processing box in this embodiment are the same as those in Embodiment 18, and will not be described again here.

[0304] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, or the above technical solutions can be freely combined, including freely combining the technical features of the different embodiments described above. All of these fall within the protection scope of this utility model.

Claims

1. A processing box, detachably mounted in an imaging device having a drive transmission gear and an idler gear, the drive transmission gear comprising a first main component gear portion and a second main component gear portion, the idler gear, the second main component gear portion and the first main component gear portion being arranged coaxially and rotatably in sequence, with the direction toward the idler gear designated as the J direction and the direction opposite to the J direction designated as the H direction, characterized in that, The processing box includes: Developing frame; The developing roller is rotatably supported on the developing frame; Drum frame; A photosensitive drum, rotatably supported on the drum frame; and A drive force receiving gear is configured to mesh with the first main component gear portion and / or the second main component gear portion to receive drive force and transmit it to the photosensitive drum.

2. The processing box according to claim 1, characterized in that, The driving force receiving gear meshes with one of the gear portions of the first main component or the gear portion of the second main component, and does not mesh with the other.

3. The processing box according to claim 2, characterized in that, The processing box also includes a stop member that applies a force to the idler wheel or the drive transmission gear, having at least a component force in the H direction, to prevent the idler wheel or the drive transmission gear from retracting in the J direction.

4. The processing box according to claim 3, characterized in that, The stop member includes a friction element that applies a frictional force having at least a component force in the H direction by contacting the idler wheel or the drive transmission gear to prevent the idler wheel or the drive transmission gear from retracting in the J direction.

5. The processing box according to claim 4, characterized in that, The friction element is a pressing part fixedly mounted on the drum frame, which is used to abut against the idler wheel to apply frictional force to the idler wheel.

6. The processing box according to claim 5, characterized in that, The idler wheel has a recess for engaging with the drive transmission gear, and the pressing portion abuts against the outer circumferential surface of the recess to exert friction on the idler wheel.

7. The processing box according to claim 6, characterized in that, The drum frame includes a cover and a drum support member. The cover is used to accommodate the driving force receiving gear. The drum support member is disposed at the end of the processing box. The pressing part is disposed on the drum support member or the cover.

8. The processing box according to claim 4, characterized in that, The friction element is rotatably disposed, and the friction element contacts the drive transmission gear through its outer peripheral surface and generates frictional force.

9. The processing box according to claim 8, characterized in that, The rotation axis of the friction element is parallel to the rotation axis of the drive transmission gear.

10. The processing box according to claim 8, characterized in that, The rotation axis of the friction element is not parallel to the rotation axis of the drive transmission gear.

11. The processing box according to claim 10, characterized in that, The rotation axis of the friction element is perpendicular to the rotation axis of the drive transmission gear, and the friction element is cylindrical.

12. The processing box according to claim 4, characterized in that, There are two friction components, and each of the two friction components is provided with a friction surface. The two friction surfaces respectively contact the two sides of the drive transmission gear to generate friction force.

13. The processing box according to claim 12, characterized in that, The friction elements are movably configured such that the two friction elements can extend toward or retract away from the drive transmission gear, and / or the friction elements are oscillatingly configured such that the angle between the two friction elements changes, thereby changing the distance between the friction surfaces of the two friction elements.

14. The processing box according to claim 4, characterized in that, The friction element is a top member, which is configured to reciprocate radially relative to the drive transmission gear; when the top member extends radially, it can abut against the drive transmission gear, thereby applying a force to the drive transmission gear, and then the top member can retract radially.

15. The processing box according to claim 14, characterized in that, The top member is configured to extend radially and insert into the tooth gap of the drive transmission gear, thereby applying a force to the drive transmission gear; the top member is also configured to retract radially to avoid the teeth of the drive transmission gear. The processing box further includes a first elastic element for providing a force that causes the top member to extend or retract radially.

16. The processing box according to claim 15, characterized in that, The processing box further includes a first rotatably disposed cam, the first cam having a protrusion, which, when the first cam rotates, can push the top member, causing the top member to extend radially; the first elastic member is used to provide a force that causes the top member to retract radially.

17. The processing box according to claim 3, characterized in that, The stop member includes a gear member, which is a separate structure from the driving force receiving gear. The gear member meshes with the driving transmission gear, thereby applying a force to the driving transmission gear to prevent the driving transmission gear from retracting in the J direction.

18. The processing box according to claim 17, characterized in that, The gear component is an interleaved helical gear, the rotation axis of which is not parallel to the rotation axis of the drive transmission gear. The interleaved helical gear receives the driving force of the drive receiving gear and rotates, thereby applying a force to the drive transmission gear.

19. The processing box according to claim 18, characterized in that, The rotation axis of the interleaved helical gear is perpendicular to the rotation axis of the drive transmission gear.

20. The processing box according to claim 19, characterized in that, The first end of the interleaved helical gear is provided with an eccentric column that deviates from the axis of rotation of the interleaved helical gear; The processing box also includes: A second cam, configured to receive the driving force of the gear and rotate coaxially with it, is provided with a transmission structure; and The driven member has two ends that cooperate with the transmission structure and the eccentric column respectively. The driven member drives the eccentric column to rotate around the rotation axis of the interleaved helical gear, and transmits the driving force to the interleaved helical gear.

21. The processing box according to claim 17, characterized in that, The processing box also includes: The developing roller is rotatably supported; and A developing drive gear is used to drive the developing roller to rotate; The gear component is a crown gear, and both end faces of the crown gear are provided with teeth. The teeth on the two end faces mesh with the drive transmission gear and the developing drive gear, respectively, so as to transmit the driving force from the drive transmission gear to the developing roller. The rotation axis of the crown gear is inclined to the rotation axis of the drive transmission gear, thereby applying a force to the drive transmission gear.

22. The processing box according to claim 17, characterized in that, The gear component is a braking force generating gear; The stopping component also includes a braking component, which is connected to the braking force generating gear. When the braking force generating gear rotates, the braking component applies braking force to the braking force generating gear and acts on the drive transmission gear through the braking force generating gear.

23. The processing box according to claim 22, characterized in that, A first support shaft is fixedly provided on the drum frame, and the braking force generating gear is rotatably supported on the first support shaft. The braking component is disposed between the braking force generating gear and the first support shaft to generate braking force on the braking force generating gear.

24. The processing box according to claim 23, characterized in that, The braking component includes a braking elastic element, which is disposed between the braking force generating gear and the first support shaft to generate a braking force on the braking force generating gear.

25. The processing box according to claim 24, characterized in that, The braking elastic element is a torsion spring, the coil of which is fitted and grips the first support shaft, and the arm of which engages with the braking force in a gear-like contact.

26. The processing box according to claim 24, characterized in that, The braking elastic element is a compression spring. The length direction of the braking elastic element is arranged along the radial direction of the braking force generating gear. The two ends of the length direction of the braking elastic element abut against the first support shaft and the braking force generating gear, respectively, so as to generate friction when the braking force generating gear rotates. There are multiple braking elastic elements, which are arranged circumferentially around the braking force generating gear.

27. The processing box according to claim 26, characterized in that, The braking component further includes a braking connector. The two ends of the braking elastic member along its length are fixedly connected to the inner circumferential wall of the braking force generating gear and the braking connector, respectively. When the braking force generating gear rotates and drives the braking elastic member and the braking connector to rotate, friction is generated between the braking connector and the outer circumferential wall of the first support shaft.

28. The processing box according to claim 2, characterized in that, The processing box also includes: A first functional member is disposed on the driving force receiving gear; and The second actuating member is fixedly disposed on the photosensitive drum and is closer to the photosensitive drum than the first actuating member. The second actuating member is used to cooperate with the first actuating member. The driving force of the driving force receiving gear is transmitted to the photosensitive drum through the second actuating member to drive the photosensitive drum to rotate. When the driving force receiving gear is driven to rotate by the driving transmission gear, the first action member and the second action member interact to cause the driving force receiving gear to move in the axial direction J.

29. The processing box according to claim 28, characterized in that, At least one of the first and second action members is provided with a guide slope. The guide slope is inclined relative to the axial direction of the driving force receiving gear. When the driving force receiving gear receives driving force and rotates, the first action member can rotate with the driving force receiving gear and act with the second action member through the guide slope, so that the first action member moves in the axial direction J. The first action member drives the driving force receiving gear to move in the axial direction J.

30. The processing box according to claim 29, characterized in that, The first actuating member is fixedly connected to the driving force receiving gear. When the driving force receiving gear receives driving force and rotates, the first actuating member rotates with the driving force receiving gear. The guide inclined surface converts the rotational motion of the first actuating member into axial movement, thereby causing the first actuating member to move in the J direction axially.

31. The processing box according to claim 2, characterized in that, The processing box also includes an abutment portion for abutting against the end of the gear portion of the first main component to prevent the drive transmission gear from moving in the H direction or pushing the drive transmission gear to move in the J direction.

32. The processing box according to claim 31, characterized in that, The processing box further includes an action member disposed on the driving force receiving gear and capable of rotating with the driving force receiving gear, the action member being configured to slide radially along the driving force receiving gear; The abutting portion is disposed on the radial end of the actuating member; When the driving force receiving gear is driven to rotate by the driving transmission gear, the actuating member slides radially away from the axis of the driving force receiving gear under the action of centrifugal force, so that the abutting part extends toward the first main component gear part and applies a pushing force with at least a component force toward the J direction to the first main component gear part, so that the driving transmission gear moves in the J direction.

33. The processing box according to claim 31, characterized in that, The abutment portion is fixedly disposed on the drum frame or developing frame. When the processing box is installed in the imaging device, the abutment portion abuts against the end of the gear portion of the first main component to prevent the drive transmission gear from moving in the H direction or pushing the drive transmission gear to move in the J direction.

34. The processing box according to claim 1 or 2, characterized in that, The processing box further includes a limiting part, which is arranged on the radial periphery of the drive transmission gear along a direction parallel to the set rotation axis of the drive transmission gear, and is used to limit the rotation axis of the drive transmission gear from swaying.

35. The processing box according to claim 34, characterized in that, The limiting part is configured to extend circumferentially along the drive transmission gear, thereby forming an arc-shaped wrap around the drive transmission gear.

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