WO2024078636A1 - 一种鼓单元和处理盒 - Google Patents

一种鼓单元和处理盒 Download PDF

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Publication number
WO2024078636A1
WO2024078636A1 PCT/CN2023/124784 CN2023124784W WO2024078636A1 WO 2024078636 A1 WO2024078636 A1 WO 2024078636A1 CN 2023124784 W CN2023124784 W CN 2023124784W WO 2024078636 A1 WO2024078636 A1 WO 2024078636A1
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WO
WIPO (PCT)
Prior art keywords
driving force
developing
gear
photosensitive drum
drum
Prior art date
Application number
PCT/CN2023/124784
Other languages
English (en)
French (fr)
Inventor
罗琴
李颖豪
邓浩
陈柔娟
陈名栋
Original Assignee
珠海纳思达信息技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 珠海纳思达信息技术有限公司 filed Critical 珠海纳思达信息技术有限公司
Publication of WO2024078636A1 publication Critical patent/WO2024078636A1/zh

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit

Definitions

  • the present invention relates to the technical field of image forming, and in particular to a drum unit and a process box.
  • an electrophotographic photosensitive member hereinafter referred to as a photosensitive drum
  • a processing device acting on the photosensitive drum are integrally formed into a cartridge (generally referred to as a process cartridge).
  • a process cartridge is detachable from a main assembly of the image forming apparatus.
  • FIG. 1 there is a drum drive transmission unit disclosed in Chinese patent CN113574469A, which is engaged with a driving force receiving unit (i.e., a coupling) on a processing box through multiple components to drive and brake it.
  • a driving force receiving unit i.e., a coupling
  • FIG. 1 there is an electronic photographic image forming device M, which includes a main component 170, a drawer 171, and a door cover 11.
  • the main component 170 is provided with a housing, a drum drive transmission unit 203, a separation mechanism, and a transfer unit, etc.
  • the drawer 171 can accommodate the processing box 100 and can move relative to the main component 170 to install the processing box 100 into the housing of the main component 170.
  • the door cover 11 is arranged on the outside of the main component 170, and it can open or close the housing of the main component 170.
  • the drum drive transmission unit 203 arranged on the main component 170 includes a driving force transmission component and a braking force applying component, wherein the driving force transmission component includes a first rotating member 201 and a driving force transmission member 180, the first rotating member 201 is rotatably supported on the support shaft 202, one end of the driving force transmission member 180 is provided with a rotation stop portion 180b for receiving the driving force, and the other end is provided with a driving force transmission portion 180v, the driving force transmission member 180 is assembled on the first rotating member 201 in a manner movable along the axial direction M1, and the first rotating member 201 drives the driving force transmission member 180 to rotate through the cooperation between the rotation stop portion 201b provided on the first rotating member 201 and the rotation stop portion 180b provided on the driving force transmission member 180.
  • the driving force transmission component includes a first rotating member 201 and a driving force transmission member 180
  • the first rotating member 201 is rotatably supported on the support shaft 202
  • one end of the driving force transmission member 180 is provided with a
  • the braking force applying assembly includes a braking member 206, a first braking force engaging member 204, a second braking force engaging member 208, a first engaging spring 211, a second spring 210 and a braking transfer member 207, wherein the braking member 206 includes a fixed side 206a and a rotating side 206b, the fixed side 206a is fixedly connected to the support shaft 202, and the rotating side 206b is capable of rotating relative to the fixed side 206a and generating a braking force, and the method for generating the braking force can be appropriately selected from those methods using friction and viscosity.
  • the first braking force engaging member 204 and the second braking force engaging member 208 are used to apply braking force to the process cartridge 100.
  • the two can be assembled together by engaging the rotation stop protrusion 208c and the rotation stop recess 204c, and the two can have a synchronous action process.
  • the second braking force engaging member 208 is located inside the first braking force engaging member 204, and the engaging portion 204b of the first braking force engaging member 204 can be in contact with the vertical surface 180x2 or abut against each other.
  • the shaft portion 207 b of the brake transfer member 207 passes through the through holes in the middle of the first and second braking force engagement members 204 and 208 and is connected to the rotating side 206 b of the brake member 206 to be able to transfer braking force to the first and second braking force engagement members 204 and 208 .
  • the flange portion 207a of the brake transfer member 207 is provided with a protrusion 207e
  • the flange portion 204a of the first braking force engaging member 204 is correspondingly provided with a protrusion 204e.
  • the first braking force engaging member 204 and the second braking force engaging member 208 are capable of moving in the axial direction M1 relative to the braking transfer member 207 and the braking member 206.
  • the protrusion 207e of the braking transfer member 207 is offset or separated from the protrusion 204e of the first braking force engaging member 204 in the axial direction M1
  • the second braking force engaging member 208 and the first braking force engaging member 204 will not receive the braking force.
  • first engagement spring 211 presses against the end face 206d of the brake member 206, and the other end presses against the flange portion 204a of the first braking force engagement member 204.
  • the first engagement spring 211 is in a compressed state, and applies an elastic force to the first braking force engagement member 204 along the M1B direction.
  • the elastic force can keep the protrusion 207e of the brake transfer member 207 engaged with the protrusion 204e of the first braking force engagement member 204.
  • the second spring 210 is a compression coil spring and is configured to be sandwiched and compressed between the end face 206d of the brake member 206 and the flange portion 207a of the brake transfer member 207.
  • the second spring 210 applies a repulsive force (pushing force, elastic force) to each of the end face 206d of the brake member 206 and the flange portion 207a of the brake transfer member 207.
  • the protrusion 207f at the end of the brake transmission member 207 in the axial direction M1A abuts against the contact surface 180f of the driving force transmission member 180.
  • the movement of the driving force transmission member 180 in the arrow M1B direction is regulated (restricted) by the axial direction restriction portion 212, so that the driving force transmission member 180 does not fall off from the drum drive transmission unit 203 on the main assembly 170 side.
  • the driving force transmission member 180 is capable of moving in the M1A and M1B directions relative to the first rotating member 201
  • the first braking force engagement member 204 and the second braking force engagement member 208 are capable of moving in the M1A and M1B directions relative to the braking transmission member 207 and the first rotating member 201, and are also capable of moving in the M1A and M1B directions relative to the driving force transmission member 180.
  • the driving force transmission member 180 includes a cylindrical portion 180c, a driving force transmission part 180v and a positioning boss 180i.
  • the cylindrical portion 180c has an inner abutment surface 180c1 facing the M1B direction around the positioning boss 180i.
  • the first braking force engaging member 204 has two engaging portions 204b protruding in the form of claws toward the direction of the process cartridge and engaging with the coupling.
  • the second braking force engaging member 208 has two engaging portions 204b protruding in the form of claws toward the process cartridge and engaging with the coupling.
  • the driving force transmitting part 180v is provided with an inclined surface 180x1 and a vertical surface 180x2 on the side of the engaging portion 204b close to the first braking force engaging member 204, and a vertical surface 180x3 on the side facing away from the engaging portion 204b.
  • the existing transmission method of the photosensitive drum is relatively complicated, the engagement is not stable enough, and it is easy to disengage, resulting in unstable power transmission.
  • a drum unit for being detachably mounted in a main assembly of an image forming apparatus, the main assembly comprising a drum drive transmission unit, the drum drive transmission unit comprising a driving force transmission member and a first braking force engagement member and a second braking force engagement member provided in the driving force transmission member, the driving force transmission member comprising a cylindrical portion, a driving force transmission portion and a positioning boss,
  • the drum unit comprises:
  • the coupling includes a middle receiving member and a sleeve; a driving force receiving member is provided on the sleeve, and the driving force receiving member can be engaged with the driving force transmitting member to transmit the power received from the driving force transmitting member to the photosensitive drum.
  • the present invention provides a new driving force transmission method by providing a coupling including a middle receiving member, and the method has a simple structure and stable power transmission.
  • the sleeve is sleeved outside the middle receiving member, the middle receiving member and the sleeve are fixedly arranged in the axial direction and rotatably arranged in the circumferential direction, and the sleeve is fixed to the photosensitive drum;
  • the middle receiver is engaged with the first braking force engaging member and/or the second braking force engaging member of the driving force transmitting member, and the middle receiver does not transmit the driving force to the photosensitive drum.
  • the coupling further comprises a fixing member fixed to the end of the middle receiving member facing the photosensitive drum, and the fixing member abuts against the end of the sleeve facing the photosensitive drum;
  • the outer wall of the middle receiving member and the inner wall of the sleeve are respectively provided with matching steps;
  • the fixing element cooperates with the step to fix the middle receiving element axially relative to the sleeve.
  • the driving force transmission portion of the driving force transmission member is provided with an inclined surface
  • the driving force receiving member is a power transmission part provided on the sleeve and protruding in a direction away from the photosensitive drum.
  • the power transmission part is used to engage with the inclined surface to transmit the driving force to the photosensitive drum.
  • the driving force receiving member is an annular transmission portion fixed to the sleeve, and the annular transmission portion has a friction surface that contacts the end of the cylindrical portion of the driving force transmission member and generates friction, thereby transmitting the driving force to the photosensitive drum through friction.
  • the friction surface of the annular transfer part includes a first friction surface for contacting the outer circumferential surface of the cylindrical part, and a second friction surface for contacting the end face of the cylindrical part; or, the annular transfer part is made of elastic material, and the annular transfer part can be deformed under the compressive force of the cylindrical part, thereby forming a first friction surface for contacting the outer circumferential surface of the cylindrical part, and a second friction surface for contacting the end face of the cylindrical part.
  • the coupling further comprises an end receiver disposed at an end of the sleeve
  • the end receiving member is provided with a guiding portion and an engaging groove.
  • the guiding portion guides the first braking force engagement member and/or the second braking force engagement member into the engaging groove to form an engagement, and the end receiving member does not transmit the driving force to the photosensitive drum.
  • the present invention also provides a drum unit for being detachably mounted in a main component of an image forming device, the main component comprising a drum drive transmission unit, the drum drive transmission unit comprising a driving force transmission member and a first braking force engagement member and a second braking force engagement member arranged in the driving force transmission member, the driving force transmission member comprising a cylindrical portion, a driving force transmission portion and a positioning boss,
  • the drum unit comprises:
  • the coupling includes a middle receiving member; the middle receiving member can be engaged with the driving force transmission member to transmit the power received from the driving force transmission member to the photosensitive drum
  • the middle receiving member is fixedly connected to the photosensitive drum, and the middle receiving member is provided with a receiving portion for inserting the positioning boss of the driving force transmission member, and the receiving portion has a friction end face that contacts with the inner abutment surface of the driving force transmission member and generates friction force and/or a friction side wall that contacts with the outer circumferential surface of the positioning boss and generates friction force, thereby transmitting the driving force to the photosensitive drum through friction force.
  • the middle receiving member is provided with a guide portion and an engagement groove, and when the coupling is engaged with the driving force transmission member, the guide portion guides the first braking force engagement member and/or the second braking force engagement member to enter the engagement groove to form an engagement;
  • the first braking force engagement member and/or the second braking force engagement member form a transmission with the engagement groove, or the first braking force engagement member and/or the second braking force engagement member are axially fixed with the engagement groove and can move circumferentially in the engagement groove.
  • the present invention also provides a processing box for being detachably installed in a main component of an image forming device, characterized in that it includes a drum unit according to any one of the above items.
  • the present invention also provides a processing box for being detachably mounted in a main assembly of an image forming device,
  • the main assembly includes a drum drive transmission unit and a developing drive force transmission unit, the drum drive transmission unit includes a driving force transmission member and a first braking force engagement member and a second braking force engagement member provided in the driving force transmission member, and the process cartridge includes:
  • a developing unit comprising a developing frame and a developing roller
  • a drum unit including a photosensitive frame and a photosensitive drum
  • the developing unit further includes a developing driving force receiving unit, and the developing driving force is used to engage with the developing driving force transmitting unit to receive a driving force, thereby driving the developing roller and the photosensitive drum to rotate.
  • the developing unit further comprises a transmission gear and a developing gear, wherein the transmission gear is coaxially fixedly arranged with the developing driving force receiving unit, the developing gear is coaxially fixedly arranged with the developing roller, and the transmission gear is meshed with the developing gear;
  • the drum unit also includes a driving gear, which is coaxially fixed with the photosensitive drum, and the coupling is rotatably arranged at one end of the photosensitive drum; the driving gear can mesh with the developing gear, so that the photosensitive drum obtains driving force from the developing driving force transmission unit.
  • the drum unit further comprises a charging roller and a charging roller gear rotatably disposed on the photosensitive frame, wherein the charging roller and the charging roller gear are coaxially fixedly disposed;
  • the drum unit further comprises an intermediate gear, the intermediate gear is fixedly arranged coaxially with the coupling, and the intermediate gear is meshed with the charging roller gear;
  • the charging roller obtains driving force from the drum driving transmission unit through the charging roller gear, the intermediate gear and the coupling, and the photosensitive drum is driven to rotate by the surface friction with the charging roller.
  • the driving gear rotates with the photosensitive drum and applies a thrust force to the developing gear, so that the developing gear drives the developing roller to move away from the photosensitive drum, and the developing roller is separated from the photosensitive drum.
  • the developing gear is configured to mesh with the intermediate gear, and when the developing driving force transmission unit stops outputting driving force and the drum driving transmission unit keeps outputting driving force, the intermediate gear rotates with the coupling and applies a thrust force to the developing gear, so that the developing gear drives the developing roller to move away from the photosensitive drum, and the developing roller is separated from the photosensitive drum.
  • the drum unit further comprises a first special-shaped gear coaxially fixedly arranged with the coupling;
  • the developing unit further comprises a second special-shaped gear coaxially fixedly arranged with the developing gear, the developing gear and the second special-shaped gear are arranged to be movable in the axial direction; the teeth of the first special-shaped gear and/or the teeth of the second special-shaped gear are provided with non-driving inclined surfaces, so that a thrust force can be generated when they are engaged;
  • the meshing portion of the developing gear and the transmission gear is configured as helical teeth.
  • the driving gear rotates with the photosensitive drum to drive the developing gear to rotate.
  • the helical teeth of the developing gear act on the helical teeth of the transmission gear to make the developing gear move axially.
  • the second special-shaped gear moves axially from a position misaligned with the first special-shaped gear to a position engaged with the first special-shaped gear.
  • the first special-shaped gear rotates with the coupling and applies a thrust to the second special-shaped gear, so that the second special-shaped gear drives the developing roller to move in a direction away from the photosensitive drum, and the developing roller is separated from the photosensitive drum.
  • the process cartridge further comprises an end cover disposed at the ends of the developing unit and the drum unit, and the end cover is provided with a positioning protrusion;
  • the developing unit also includes a protective cover arranged at the end of the developing frame, and a first positioning hole and a second positioning hole are provided on the protective cover.
  • the developing unit further comprises a separating member, the separating member being movably connected to the developing frame and capable of receiving a separating force and a contact force of the separating mechanism of the main assembly to move;
  • the processing box also includes a moving member, and the moving member is connected to the separation member and the photosensitive drum respectively;
  • the moving member When the separating member receives the contact force, the moving member is driven by the separating member to drive the photosensitive drum to move downward and contact the transfer belt; when the separating member receives the separation force, the moving member is driven by the separating member to drive the photosensitive drum to move upward and separate from the transfer belt.
  • the process cartridge further comprises an end cover disposed at the ends of the developing unit and the drum unit, and the moving member is disposed on the end cover and is movable in a horizontal direction;
  • the first end of the movable member interacts with the separating member, so that the movable member moves in the horizontal direction under the action of the separating member and the contact force, and the second end of the movable member interacts with the photosensitive drum, converting the horizontal movement of the movable member into the up and down movement of the photosensitive drum.
  • the separation member is provided with a limiting protrusion
  • the first end of the moving member is provided with a recess
  • the limiting protrusion is arranged in the recess and can drive the recess to move in a horizontal direction
  • the drum unit further comprises a supporting member connected to the photosensitive drum, a fixing column is arranged on the supporting member, a guide hole is arranged at the second end of the movable member, and the fixing column is arranged in the guide hole.
  • the guide hole can be displaced in the vertical direction along with the horizontal movement of the guide hole, thereby driving the photosensitive drum to move up and down.
  • the process cartridge further comprises an end cover disposed at the ends of the developing unit and the drum unit, the end cover further comprises a protrusion, and the moving member comprises a first concave hole and a second concave hole;
  • the movable member When the separating member receives the contact force, the movable member is driven by the separating member to drive the photosensitive drum to move downward and contact the transfer belt, and the first concave hole moves to a position cooperating with the protrusion; when the separating member receives the separation force, the movable member is driven by the separating member to drive the photosensitive drum to move upward and disengage from the transfer belt, and the second concave hole moves to a position cooperating with the protrusion.
  • the developing unit further comprises a transmission gear and a developing gear, wherein the transmission gear is coaxially fixedly disposed with the developing driving force receiving unit, the developing gear is coaxially fixedly disposed with the developing roller, and the transmission gear is meshed with the developing gear;
  • the drum unit further comprises a driving gear, the driving gear and the photosensitive drum are coaxially fixedly arranged; the driving gear can be meshed with the developing gear, so that the photosensitive drum obtains the driving force from the developing driving force transmission unit;
  • the coupling is fixedly disposed at one end of the photosensitive drum so that the photosensitive drum obtains driving force from the drum drive transmission unit.
  • FIG1 is a schematic structural diagram of a conventional image forming device
  • FIG2 is an exploded schematic diagram of a drum drive transmission unit of a conventional image forming apparatus
  • FIG3 is a schematic structural diagram of a conventional first braking force engaging member and a braking transmission member
  • FIG4 is a cross-sectional view of a conventional drum drive transmission unit
  • FIG5 is a cutaway perspective view of a conventional drum drive transmission unit
  • FIG6 is a schematic structural diagram of an existing drum drive transmission unit
  • FIG7 is a schematic structural diagram of an existing driving force transmission component
  • FIG. 8 is a schematic structural diagram of a process cartridge according to Embodiment 1 of the present invention.
  • FIG. 9 is a schematic diagram of the overall structure of the process cartridge according to the first embodiment of the present invention from an angle;
  • FIG. 10 is a schematic structural diagram of a coupling and a photosensitive drum, and a driving force transmission member connected thereto, provided in Embodiment 1 of the present invention
  • FIG. 11 is a schematic diagram of the exploded structure of the coupling and the photosensitive drum, and the driving force transmission component connected thereto, provided in the first embodiment of the present invention
  • FIG. 12 is a cross-sectional view of a coupling and a photosensitive drum, and a driving force transmission member connected thereto, provided in Embodiment 1 of the present invention
  • FIG. 13 is a schematic structural diagram of a coupling and a photosensitive drum, as well as a driving force transmission component connected thereto, provided in Embodiment 2 of the present invention
  • FIG. 14 is a cross-sectional view of a coupling and a photosensitive drum, and a driving force transmission member connected thereto, according to a second embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a process cartridge at an angle provided in Embodiment 3 of the present invention.
  • FIG. 16 is a schematic diagram of a partial structure of a photosensitive drum and a coupling according to Embodiment 3 of the present invention.
  • FIG. 17 is a partial structural cross-sectional view of a photosensitive drum and a coupling according to Embodiment 3 of the present invention.
  • FIG18 is a partial structural schematic diagram of a coupling according to Embodiment 3 of the present invention.
  • FIG. 19 is a schematic diagram of a partial structure of a photosensitive drum and a coupling according to a fourth embodiment of the present invention.
  • 20 is a schematic diagram of the partial structure of the photosensitive drum and the coupling of the fifth embodiment of the present invention.
  • FIG. 21 is a partial structural cross-sectional view of a photosensitive drum and a coupling according to Embodiment 5 of the present invention.
  • FIG. 22 is a partial exploded structural diagram of a photosensitive drum and a coupling according to Embodiment 6 of the present invention.
  • FIG. 23 is a partial cross-sectional view of a photosensitive drum and a coupling according to Embodiment 6 of the present invention.
  • FIG. 24 is a schematic diagram of the partial structure of the photosensitive drum and coupling element of Embodiment 6 of the present invention.
  • FIG26 is a schematic structural diagram of a sleeve according to Embodiment 7 of the present invention.
  • FIG. 27 is a partial structural cross-sectional view of a photosensitive drum and a coupling according to Embodiment 7 of the present invention.
  • FIG28 is a schematic structural diagram of a rotating component according to Embodiment 7 of the present invention.
  • FIG29 is an enlarged schematic diagram of a partial structure of a coupling according to Embodiment 7 of the present invention.
  • FIG. 30 is an exploded schematic diagram of a process cartridge in Embodiment 8 of the present invention.
  • FIG. 31 is an exploded schematic diagram of the process cartridge in Embodiment 8 of the present invention observed from another angle;
  • FIG. 32 is a cross-sectional view of a coupling portion of a process cartridge in Embodiment 8 of the present invention.
  • FIG35 is a schematic structural diagram of the gear state of the driving end in FIG37;
  • FIG. 36 is a schematic diagram of the overall structure of the process cartridge of Embodiment 9 of the present invention after removing the protective cover and the drive side end cover;
  • FIG37 is a schematic structural diagram of a coupling and a photosensitive drum, as well as a driving force transmission member connected thereto, provided in Embodiment 9 of the present invention.
  • FIG. 38 is a cross-sectional view of a coupling and a photosensitive drum according to Embodiment 9 of the present invention, and a driving force transmission member connected thereto;
  • FIG. 40 is a schematic structural diagram of a process cartridge in a drum-roller contact state according to Embodiment 10 of the present invention.
  • 41 is a schematic structural diagram of a process cartridge in a drum-roller separation state according to a tenth embodiment of the present invention.
  • FIG. 43 is a schematic diagram of the structure of a process cartridge in Embodiment 12 of the present invention.
  • FIG46 is a schematic structural diagram of the support member and the connecting member when they are assembled in Embodiment 12 of the present invention.
  • 47 is a schematic diagram of the structure of the process cartridge in the twelve embodiment of the present invention when it is in a drum-roller contact state;
  • Figure 48 is a schematic diagram of the structure of the processing box in the twelve embodiment of the present invention when it is in the drum-roller separation state.
  • first, second, etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first” or “second” may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • the terms “installation”, “connection”, “fixation” and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined.
  • installation can be a fixed connection, a detachable connection, or an integral connection
  • it can be a mechanical connection
  • it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined.
  • connection connection
  • fixing and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two
  • a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium.
  • a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
  • the image forming device (also called imaging device, electronic imaging device) of the present invention can be a copier, a fax machine, a printer (laser beam printer, LED printer, etc.), their multi-function printers, etc.
  • the present invention is explained by taking a laser beam printer as an example.
  • the processing box can be disassembled from the main component of the image forming device. When the consumables in the processing box are used up, it is necessary to remove the old consumable box and then install a new consumable box.
  • the processing box contains a developer (for example, toner), and the processing box can also be called a "processing box", "box”, “toner container”, “powder box”, etc.
  • the drum unit 108 can also be detachable.
  • the drum drive transmission unit 203 of this embodiment adopts the drum drive transmission unit 203 in the prior art.
  • the process cartridge includes a drum unit 108, a developing unit 109 and an end cover, and the end cover includes a drive side end cover 116 and a non-drive side end cover 117.
  • the drum unit 108 includes a photosensitive frame 115 (one of the process cartridge housings), a photosensitive drum 104 rotatably supported on the photosensitive frame 115, a charging roller, and a coupling 14 disposed at the end of the photosensitive drum 104, the coupling 14 being engaged with the drum drive transmission unit 203 of the main assembly to receive a driving force.
  • the developing unit 109 includes a developing frame 125 (one of the process cartridge housings), a developing roller 106 rotatably supported on the developing frame 125, a developing driving force receiving unit 132, and a protective cover 128 fixed to the end of the developing frame 125.
  • the developing driving force receiving unit 132 is engaged with the developing driving force transmission unit on the main assembly to receive a driving force, thereby driving the developing roller 106 to rotate.
  • the developing roller 106 and the photosensitive drum 104 need to be separated by a certain distance to avoid the developing roller 106 and the photosensitive drum 104 from being in contact for a long time, which may cause the photosensitive drum 104 to be contaminated by the excess developer attached to the developing roller 106, the developing roller 106 to be deformed, and the photosensitive drum 104 to be worn.
  • the drum unit 108 and the developing unit 109 are connected in a relatively rotatable manner, for example, the developing unit 109 can rotate relative to the drum unit 108 around the rotation axis of the developing driving force receiving unit 132, so that the developing roller 106 and the photosensitive drum 104 are in contact with or separated from each other.
  • the drum unit 108 and the developing unit 109 are connected by a driving side end cover 116 and a non-driving side end cover 117 arranged at the corresponding ends in the length direction of the processing box, and the end of the processing box provided with the coupling 14 is defined as the driving end, and the other end opposite is defined as the non-driving end.
  • the processing box is provided with a tension spring 500, one end of which is arranged on the protective cover 128, and the other end is arranged on the driving side end cover 116. Due to the tension of the tension spring 500 acting on the developing frame 125, the lower end thereof tends to rotate around the rotation center away from the photosensitive frame 115, and the photosensitive frame 115 is away from the developing frame 125, and the photosensitive drum 104 and the developing roller are not in contact.
  • the developing driving force transmission unit on the main assembly outputs a rotational driving force, and the driving force is transmitted from the developing driving force receiving unit 132 to the developing frame 125.
  • the entire developing frame 125 rotates clockwise around the rotation center, so that the photosensitive drum 104 contacts the developing roller, thereby enabling the developing operation. Film work.
  • FIGS. 10-12 schematically show a drum unit according to the first embodiment of the present invention, where the coupling 14 includes a middle receiving member 111 , a sleeve 112 and a fixing member 113 .
  • the sleeve 112 is rotatably sleeved outside the middle receiving member 111, and the sleeve 112 is fixedly connected to the photosensitive drum 104.
  • the sleeve 112 is provided with a power transmission part 112a protruding in the direction away from the photosensitive drum 104 along the circumferential direction, and specifically, one or more power transmission parts 112a can be provided.
  • the middle receiving member 111 is provided in the through hole 1122 of the sleeve 112, and matching steps can be provided on the outer wall of the middle receiving member 111 and the inner wall of the through hole 1122, so as to limit the axial movement of the middle receiving member 111 in the direction toward the photosensitive drum.
  • a guiding portion 111a and a snap-fitting groove 111b are provided at the end of the middle receiving member 111.
  • the guiding portion 111a can specifically be an inclined guiding surface.
  • the fixing member 113 is fixed to the end of the middle receiving member 111 facing the photosensitive drum 104, and abuts against the end of the sleeve 112 facing the photosensitive drum, thereby limiting the axial movement of the middle receiving member 111 in the direction away from the photosensitive drum.
  • the fixing member 113 is provided with a mounting hole 1131 matching the positioning hole 1111 at the end of the middle receiving member 111, for inserting a screw to form a fixed connection with the middle receiving member 111.
  • the outer diameter of the fixing member 113 can be set to be larger than the inner diameter of the through hole 1122 of the sleeve 112, so that the fixing member 113 abuts against the end of the sleeve 112, so that the middle receiving member 111 will not be separated from the sleeve 112 in the direction away from the photosensitive drum.
  • the coupling 14 is engaged with the driving force transmitting member 180 to receive the driving force and transmit it to the photosensitive drum 104 .
  • the sleeve 112 of the coupling 14 is engaged with the driving force transmission member 180.
  • the power transmission part 112a on the sleeve 112 abuts against the inclined surface 180x1 of the driving force transmission part 180v on the driving force transmission member 180 to receive the driving force.
  • the sleeve 112 fits the inner wall of the photosensitive drum 104 and transmits the driving force received from the driving force transmission member 180 to the photosensitive drum 104.
  • the middle receiving member 111 is engaged with the driving force transmission member 180, there is a gap P between it and the sleeve 112 in the circumferential direction, and the two can rotate relative to each other.
  • the driving force received by the sleeve 112 from the driving force transmission member 180 is not transmitted to the middle receiving member 111, and the driving force received by the middle receiving member 111 from the driving force transmission member 180 is not transmitted to the sleeve 112 and the photosensitive drum 104, that is, the power of the photosensitive drum 104 only comes from the sleeve 112.
  • This embodiment provides a new driving force transmission method, which has stable power transmission.
  • FIG. 13-14 schematically show a drum unit according to the second embodiment of the present invention.
  • This embodiment is substantially the same as the first embodiment, except that: the sleeve 112 is not provided with a power transmission part 112a. Instead, the driving force of the sleeve 112 is transmitted by generating friction between the annular transmission portion 114 provided on the sleeve 112 and the driving force transmission member 180 .
  • the coupling 14 further includes an annular transmission part 114, wherein the first end 1241 of the annular transmission part 114 is used to form a friction force with the end surface 180k of the cylindrical portion 180c of the driving force transmission member 180, and the second end 1242 thereof is fixedly sleeved on the sleeve 112.
  • the sleeve 112 is fitted with the inner wall of the photosensitive drum 104, and the driving force is transmitted to the photosensitive drum 104 through the annular transmission part 114.
  • the middle receiving member 111 is engaged with the driving force transmission member 180, there is a gap P between it and the sleeve 112 in the circumferential direction, and the two can rotate relative to each other, and the driving force received by the sleeve 112 from the driving force transmission member 180 is not transmitted to the middle receiving member 111, and the driving force received by the middle receiving member 111 from the driving force transmission member 180 is not transmitted to the sleeve 112 and the photosensitive drum 104, that is, the power of the photosensitive drum 104 only comes from the sleeve 112.
  • the annular transmission portion 114 may be made of a material with a large friction coefficient, such as rubber or silicone, as long as it can generate friction with the end surface 180k.
  • This embodiment is substantially the same as the second embodiment, and the main difference is that the annular transmission part 114 is arranged differently.
  • the coupling 14 includes an annular transmission portion 114 , a sleeve 112 , a middle receiving member 111 , and a fixing member 113 for fixing the middle receiving member 111 .
  • the annular transmission part 114 is configured as a friction member having a friction surface. Specifically, the annular transmission part 114 has a first friction surface 114a and a second friction surface 114b to transmit the driving force when abutting against the end of the cylindrical portion 180c of the driving force transmission member 180 of the image forming device M.
  • the first friction surface 114a contacts the outer circumferential surface of the cylindrical portion 180c
  • the second friction surface 114b contacts the end surface 180k of the cylindrical portion 180c.
  • only the second friction surface 114b may be provided.
  • the annular transmission part 114 may also be configured as an annular member having only one friction surface and made of an elastic material (such as rubber) with a large friction force.
  • the annular transmission part 114 When the annular transmission part 114 abuts against the driving force transmission member 180, the annular transmission part 114 is pressed and depressed by the end of the cylindrical portion 180c of the driving force transmission member 180, and the first friction surface 114a and the second friction surface 114b are formed by itself, generating a large friction force to transmit the driving force.
  • the sleeve 112 is installed on the photosensitive drum 104 and is provided with one or more contact surfaces 112b at one end axially away from the photosensitive drum 104.
  • the annular transfer portion 114 is provided on the contact surface 112b of the sleeve 112.
  • the sleeve 112 is fixedly connected to the photosensitive drum 104, and the two may be integrally formed or may be a separate structure.
  • the middle receiving member 111 is rotatably arranged in the sleeve 112, that is, the middle receiving member 111 and the sleeve 112 do not form a transmission, and the middle receiving member 111 is provided with a receiving portion 111c of a hollow cylindrical structure for receiving the positioning boss 180i of the driving force transmission member 180, and is used to receive the engagement of the second braking force engagement member 208. Groove 111b.
  • the coupling 14 further includes a fixing member 113 disposed at one end close to the photosensitive drum 104 .
  • the fixing member 113 and the middle receiving member 111 may be fixedly connected by a pin or a screw.
  • the structures of the drum unit and the processing box provided by the present invention are also applicable to the contact and separation of the drum roller of the processing box. Therefore, a corresponding structure for the contact and separation of the drum roller of the processing box can also be provided on the sleeve 112.
  • the rotating member 323 sleeved on the sleeve 112 is a partial structure that cooperates with the gear A on the developing frame to realize the contact and separation structure of the drum roller of the processing box.
  • the driving force transmission member 180 protrudes toward the process cartridge (along the M1B direction), the receiving portion 111 c of the middle receiving member 111 receives the positioning boss 180i of the driving force transmission member 180, and the second braking force engaging member 208 of the driving force transmission member 180 is engaged along the engaging groove 111 b of the middle receiving member 111 to ensure the stable connection between the driving force transmission member 180 and the coupling 14.
  • the annular transmission The first friction surface 114a and the second friction surface 114b of the part 114 abut against the cylindrical part 180c of the driving force transmitting member 180.
  • the middle receiving component 111 does not transmit the force received from the second braking force coupling component 208 of the driving force transmission component 180 to the photosensitive drum 104.
  • the middle receiving component 111 is only used to engage the second braking force coupling component 208 to ensure the stable connection between the driving force transmission component 180 and the coupling 14.
  • the coupling driving method arranged in the processing box of this embodiment is simple, easy to install, and has a stable connection. It can solve the problems of unstable connection between the photosensitive drum and the main component of the image forming device and unsmooth drive transmission on the existing processing box, and achieves the effect of stable drive connection and smooth drive force transmission, thereby improving the quality of the processing box.
  • This embodiment provides another drum unit and a process cartridge. Compared with the third embodiment, the main difference is that the structure of the middle receiving member 111 is different.
  • the middle receiving member 111 is provided with a receiving portion 111c of a hollow cylindrical structure for receiving the positioning boss 180i of the driving force transmission member 180.
  • the engaging groove 111b for receiving the second braking force engaging member 208 and the guiding portion 111a for guiding the second braking force engaging member 208 to the engaging groove 111b.
  • the engaging groove 111b is specifically an annular groove recessed radially on the outer circumferential surface of the receiving portion 111c
  • the guiding portion 111a is a guiding groove extending in a direction inclined to the axial direction on the outer circumferential surface of the receiving portion 111c.
  • the driving force transmission member 180 protrudes in the direction close to the processing box 300 (along the M1B direction), the receiving portion 111c of the middle receiving member 111 receives the positioning boss 180i of the driving force transmission member 180, and the second braking force engagement member 208 of the driving force transmission member 180 moves along the guide portion 111a of the middle receiving member 111 to the engaging groove 111b.
  • the second braking force engagement member 208 is axially engaged with the engaging groove 111b (i.e., fixed in the axial direction) to ensure that the driving force transmission member 180 is fixed to the coupling shaft.
  • the annular transfer portion 114 is stably connected to the photosensitive drum 14, and the first friction surface 114a and the second friction surface 114b of the annular transfer portion 114 abut against the cylindrical portion 180c of the driving force transmission member 180.
  • the cylindrical portion 180c of the driving force transmission member starts to rotate, a large friction force is generated between the first friction surface 114a and the second friction surface 114b and the cylindrical portion 180c. Therefore, the annular transfer portion 114 is driven to rotate by the cylindrical portion 180c of the driving force transmission member under the action of the friction force, and then the driving force is transmitted to the photosensitive drum 104 through the sleeve 112, so that the photosensitive drum 104 obtains a stable driving force.
  • the second braking force engaging member 208 of the driving force transmission member 180 when the second braking force engaging member 208 of the driving force transmission member 180 is axially engaged with the engaging groove 111b of the middle receiving member 111, the second braking force engaging member 208 can move along the circumferential direction of the engaging groove 111b, and the driving force of the second braking force engaging member 208 cannot be transmitted to the middle receiving member 111 through the engaging groove 111b.
  • the middle receiving member 111 If the friction between the second braking force engaging member 208 and the engaging groove 111b is large, so that the middle receiving member 111 is driven to rotate (i.e., the second braking force engaging member 208 and the engaging groove 111b form a transmission), due to the connection relationship between the components, the middle receiving member 111 cannot form a transmission with the sleeve 112, and will not transmit the received driving force to the photosensitive drum 104.
  • the middle receiving member 111 is only used for axially engaging the second braking force engaging member 208 to ensure the stability of the engagement of the driving structure.
  • This driving method has a simple structure, is easy to install, has a stable connection, and transmits the driving force smoothly, which is conducive to the efficient operation of the imaging device.
  • This embodiment provides another coupling.
  • a photosensitive drum 104 and a coupling 14 according to a fifth embodiment of the present invention are shown.
  • the coupling 14 is only provided with a middle receiving member 111 , and no sleeve 112 and fixing member 113 are provided.
  • the middle receiving member 111 includes a receiving portion 111c, and a guide portion 111a and a snap-fit groove 111b are provided on the outer circumference of the receiving portion 111c.
  • the snap-fit groove 111b is a radially recessed annular groove on the outer circumference of the receiving portion 111c
  • the guide portion 111a is a guide groove extending in a direction inclined to the axial direction on the outer circumference of the receiving portion 111c.
  • the receiving portion 111c is also provided with a friction end surface 111d and a middle through hole. The through hole is used to receive the positioning boss 180i of the driving force transmission member 180, and a friction side wall 111e is provided on the inner side wall of the middle through hole.
  • the friction end surface 111d abuts against the inner abutting surface 180c1 of the driving force transmission member 180 to transmit the driving force; the friction side wall 111e can generate greater friction with the outer circumferential surface of the positioning boss 180i to transmit the driving force together with the friction end surface 111d; the guide portion 111a is used to guide the second braking force engagement member 208 of the driving force transmission member 180 to move into the engaging groove 111b.
  • the coupling 14 is fixedly connected to one end of the photosensitive drum 104, and the coupling 14 and the photosensitive drum 104 can be integrally formed or split.
  • the friction end surface 111d and the friction side wall 111e can be surface treated.
  • the friction end surface 111d and the friction side wall 111e are set as rubber surfaces to increase the friction when combined with the driving force transmission member 180.
  • any surface treatment method that can achieve the same driving force transmission stability effect is acceptable.
  • the driving force transmission member 180 protrudes in the direction close to the processing box 300 (along the M1B direction), the receiving portion 111c of the coupling 14 receives the positioning boss 180i of the driving force transmission member 180 and the friction side wall 111e contacts the inner abutment surface 180c1 of the driving force transmission member 180, and the second braking force engaging member 208 of the driving force transmission member 180 moves along the guiding portion 111a of the coupling 14 to the engaging groove 111b.
  • the engaging member 208 is axially engaged with the engaging groove 111b to ensure the stable connection between the driving force transmission member 180 and the coupling 14.
  • the friction end surface 111d is in contact with the inner abutting surface 180c1 of the driving force transmission member 180.
  • the driving force transmission member 180 starts to rotate, due to the large friction force generated between the inner abutting surface 180c1 and the friction end surface 111d, the friction end surface 111d is driven to rotate by the driving force transmission member 180 under the action of the friction force, and then the driving force is transmitted to the photosensitive drum 104, so that the photosensitive drum 104 obtains a stable driving force.
  • This driving method has a simple structure, is easy to install, has a stable connection, and transmits the driving force smoothly, which is conducive to the efficient operation of the imaging device.
  • This embodiment is substantially the same as the fifth embodiment, and the main difference is that the coupling 14 further includes a sleeve 112 and an end receiving member 115 .
  • FIG. 22 to 24 show a photosensitive drum 104 and a coupling 14 according to an embodiment of the present invention, wherein the coupling 14 includes a middle receiving member 111 , a sleeve 112 and an end receiving member 115 .
  • the middle receiving member 111 is configured as a member capable of transmitting driving force and having a hollow cylindrical portion.
  • the middle receiving member 111 includes a receiving portion 111c, a truncated cone 111f, and an engaging head 111g.
  • the receiving portion 111c has a friction end face 111d and a friction side wall 111e.
  • the receiving portion 111c of the middle receiving member 111 is capable of receiving the positioning boss 180i of the driving force transmitting member 180, and the positioning boss 180i abuts against the friction side wall 111e, and the friction end face 111d abuts against the inner abutting surface 180c1 of the driving force transmitting member 180, thereby generating a large friction that can drive the middle receiving member 111 to rotate.
  • the friction force transmits the driving force to the middle receiving member 111.
  • the middle receiving member 111 and the sleeve 112 are fixedly connected, and the engaging head 111g is set as a triangular column structure to engage with the engaging portion 112c on the sleeve 112 to transmit the driving force; the middle receiving member 111 is also provided with a frustum 111f that abuts the end receiving member 115.
  • the sleeve 112 is fixedly mounted on the photosensitive drum 104 and is provided with an engaging portion 112c for engaging with the engaging head 111g of the middle receiving member 111 to receive the driving force.
  • the sleeve 112 and the photosensitive drum 104 can be integrally formed or can be a separate structure.
  • the coupling 14 further includes an end receiving member 115 disposed at the end of the sleeve 112.
  • the end receiving member 115 is fixedly disposed with the middle receiving member 111 and the sleeve 112 in the axial direction (i.e., it cannot be relatively displaced in the axial direction), and is rotatably disposed in the axial direction, i.e., the end receiving member 115 does not form a transmission relationship with the middle receiving member 111 and the sleeve 112.
  • the end receiving member 115 has a snap-fitting groove 111b for engaging the driving force transmission member 180, a through-portion through which the receiving portion 111c of the middle receiving member 111 can pass, a mounting portion 115a for mounting the end receiving member 115 on the middle receiving member 111, and a guide portion 111a for guiding the second braking force engagement member 208 of the driving force transmission member 180, and the guide portion 111a can be an inclined surface inclined relative to the axial direction.
  • the mounting portion 115 a is connected to the middle receiving member 111 in a snap-fit manner, so that the end receiving member 115 is fixed to the middle receiving member 111 in the axial direction but can rotate circumferentially relative to the middle receiving member 111 .
  • the end receiving member 115 is first connected to the middle receiving member 111 in a snap-fit manner, so that a portion of the receiving portion 111c of the middle receiving member 111 is exposed to the outside of the end receiving member 115 in the axial direction to facilitate receiving the driving force; then the engaging head 111g of the middle receiving member 111 is fixedly connected to the engaging portion 112c on the sleeve 112 by a pin or a screw, and finally the sleeve 112 is fixedly set on the photosensitive drum 104.
  • the structures of the drum unit and the processing box provided by the present invention are also applicable to the contact and separation of the drum roller of the processing box. Therefore, a corresponding structure for the contact and separation of the drum roller of the processing box can also be provided on the sleeve 112.
  • the rotating member 323 sleeved on the sleeve 112 is a partial structure that cooperates with the gear A on the developing frame to realize the contact and separation structure of the drum roller of the processing box.
  • the driving force transmission member 180 protrudes in the direction close to the processing box 300 (along the M1B direction), and the guide portion 111a of the end receiving piece 115 guides the second braking force engaging member 208 of the driving force transmission member 180 to the engaging groove 111b of the end receiving piece 115, so that the two are axially engaged to ensure the stable connection between the driving force transmission member 180 and the coupling 14.
  • the positioning boss 180i of the driving force transmission member 180 is received by the receiving portion 111c of the middle receiving member 111, the positioning boss 180i abuts against the friction side wall 111e, and the friction end surface 111d abuts against the inner abutting surface 180c1 of the driving force transmission member 180.
  • the driving force transmission member 180 starts to rotate, the friction end surface 111d and the friction side wall 111e respectively generate a large friction force with the inner abutting surface 180c1 and the positioning boss 180i, so the middle receiving member 111 is in friction.
  • the driving force transmitting member 180 is driven to rotate, and then the driving force is transmitted to the photosensitive drum 104 through the sleeve 112, so that the photosensitive drum 104 obtains a stable driving force.
  • the end receiving member 115 does not transmit the force received from the second braking force engaging member 208 of the driving force transmission member 180 to other components.
  • the end receiving member 115 is only used to engage the second braking force engaging member 208 to ensure the stable connection between the driving force transmission member 180 and the coupling 14.
  • the coupling driving method arranged in the processing box of this embodiment is simple, easy to install, and has a stable connection. It can solve the problems of unstable connection between the photosensitive drum and the main component of the image forming device and unsmooth drive transmission on the existing processing box, and achieves the effect of stable drive connection and smooth drive force transmission, thereby improving the quality of the processing box.
  • This embodiment is substantially the same as the embodiment.
  • the coupling 14 includes a sleeve 112 , a middle receiving member 111 , and a fixing member 113 for fixing the middle receiving member 111 .
  • the sleeve 112 is provided with a power transmission part 112a and a contact part 112d protruding in the circumferential direction away from the photosensitive drum.
  • the sleeve 112 is fixedly mounted on the photosensitive drum 104, and the middle receiving member 111 is rotatably arranged in the sleeve 112.
  • the power transmission portion 112a is provided with a driving force receiving surface 112a1 to receive the driving force transmitted by the inclined surface 180x1 of the driving force transmission member 180, and the abutment portion 112d is provided with an abutment surface 112d1 abutting against the vertical surface 180x3 of the driving force transmission member 180 to ensure that the driving force transmission portion 180v of the driving force transmission member 180 can be in the correct working position during the engagement process and the driving force transmission process, thereby realizing stable transmission of the driving force.
  • the middle receiving member 111 is provided with a receiving portion 111c of a hollow cylindrical structure for receiving the positioning boss 180i of the driving force transmission member 180, a guiding portion 111a for guiding the second braking force engagement member 208 and the first braking force engagement member 204, a snap-fitting groove 111b for engaging the second braking force engagement member 208 and the first braking force engagement member 204, and a limiting surface 111h for abutting against the vertical surface 180x2 of the driving force transmission member 180 to limit and ensure that the inclined surface 180x1 and the driving force receiving surface 112a1 are stably abutted.
  • the guiding portion 111a is set as an inclined surface inclined with the axial direction of the coupling 14.
  • the setting method of the guiding portion 111a is conducive to the guiding portion 111a being able to guide the second braking force engagement member 208 and the first braking force engagement member 204 to the snap-fitting groove 111b regardless of the coupling 14 and the driving force transmission member 180 from any position.
  • the coupling 14 also includes a fixing member 113 arranged at one end close to the photosensitive drum 104.
  • the fixing member 113 and the middle receiving member 111 can be fixedly connected by pins or screws.
  • the middle receiving member 111 is rotatably arranged in the sleeve 112. There is a non-transmission connection between the two.
  • the fixing member 113 only ensures that the middle receiving member 111 does not fall out of the sleeve 112 in the axial direction. Therefore, when the middle receiving member 111 receives the force from the driving force transmission member 180, the middle receiving member 111 does not transmit the force to the sleeve 112, that is, it does not drive the photosensitive drum 104 to rotate.
  • the middle receiving member 111 is first set in the sleeve 112, and then the fixing member 113 is fixedly connected to the middle receiving member 111, and finally the sleeve 112 is installed on the photosensitive drum 104.
  • the structures of the drum unit and the processing box provided by the present invention are also applicable to the contact and separation of the drum roller of the processing box. Therefore, a corresponding structure for the contact and separation of the drum roller of the processing box can also be set on the sleeve 112.
  • the rotating member 323 sleeved on the sleeve 112 is a partial structure that cooperates with the gear A on the developing frame to realize the contact and separation structure of the drum roller of the processing box.
  • the rotating member 323 is a roughly annular member, and the rotating member 323 is provided with a gear portion 323a and an annular mounting portion 323b.
  • the gear portion 323a is used to cooperate with the gear A on the developing frame, and the annular mounting portion 323b has an opening and is provided with one or more friction protrusions 323c on the annular mounting portion 323b to increase the friction between the rotating member 323 and the sleeve 112.
  • the driving force transmission member 180 protrudes in the direction close to the processing box (along the M1B direction), the receiving portion 111c of the middle receiving member 111 receives the positioning boss 180i of the driving force transmission member 180, and the second braking force engagement member 208 and the first braking force engagement member 204 of the driving force transmission member 180 move along the guide portion 111a of the middle receiving member 111 to the engaging groove 111b of the middle receiving member 111, so that the second braking force engagement member 208 and the first braking force engagement member 204 engage with the engaging groove 111b to ensure the stable connection between the driving force transmission member 180 and the coupling 14.
  • the middle receiving member 111 is engaged with the coupling 14.
  • the force received from the driving force transmission member 180 causes the middle receiving member 111 to idle in the sleeve 112.
  • the power transmission part 112a and the abutment part 112d on the sleeve 112 abut against the driving force transmission member 180.
  • the driving force receiving surface 112a1 of the power transmission part 112a abuts against the inclined surface 180x1
  • the abutment surface 112d1 of the abutment part 112d abuts against the vertical surface 180x3
  • the limiting surface 111h of the middle receiving member 111 abuts against the vertical surface 180x2 of the driving force transmission member 180.
  • the driving force is transmitted from the inclined surface 180x1 of the driving force transmission member 180 to the photosensitive drum 104 through the driving force receiving surface 112a1 of the power transmission part 112a of the sleeve 112, so that the photosensitive drum 104 obtains a stable driving force.
  • the middle receiving component 111 does not transmit the force received from the braking force coupling component of the driving force transmission component 180 to the photosensitive drum 104.
  • the middle receiving component 111 is only used to engage the second braking force coupling component 208 and the first braking force coupling component 204 and the driving force transmission component 180 to ensure the stability of the engagement of the driving structure.
  • the blade height X of the sleeve 112 and the guide portion 111a are The blade height X is related to the distance Y between the surface plane of the sleeve 112 (i.e., the end surface of the sleeve 112).
  • the blade height X and the distance Y between the guide portion 111a and the surface plane of the sleeve 112 are set in accordance with the size and position of the relevant structure of the driving force transmission member 180.
  • the height X is set to be substantially the same as the distance Y.
  • the second braking force engagement member 208 and the first braking force engagement member 204 of the driving force transmission member 180 may fail to engage with the engagement groove 111b of the middle receiving member 111; if the blade height X is lower than the distance Y between the guide portion 111a and the surface plane of the sleeve 112, the driving force receiving surface 112a1 may be reduced, resulting in unstable driving force reception.
  • the coupling driving method arranged in the processing box of this embodiment is simple, easy to install, and has a stable connection. It can solve the problems of unstable connection between the photosensitive drum and the main component of the image forming device and unsmooth drive transmission on the existing processing box, and achieves the effect of stable drive connection and smooth drive force transmission, thereby improving the quality of the processing box.
  • the main difference between this embodiment and the first embodiment is that the photosensitive drum 104 of this embodiment does not obtain driving force through the coupling 14 but obtains driving force through the developing driving force receiving unit 132 of the developing unit 109 .
  • the developing unit 109 of this embodiment further includes a transmission gear 31 , a developing gear 32 and a bearing 126 at the driving end.
  • the bearing 126 is disposed between the end of the developing frame 125 and the protective cover 128 .
  • the protective cover 128 is provided with a first positioning hole 1281 and a second positioning hole 1282, wherein the diameter of the first positioning hole 1281 may be larger than the diameter of the second positioning hole 1282, and there may be a gap between the first positioning hole 1281 and the second positioning hole 1282.
  • the driving side end cover 116 is provided with a positioning protrusion at a position corresponding to the first positioning hole 1281, which is used to keep the photosensitive drum and the developing roller in a separated position or a contact position.
  • the positioning protrusion is specifically implemented as a steel ball screw 60, and a fixing hole 1161 is provided on the driving side end cover 116.
  • the steel ball screw 60 can be installed in the fixing hole 1161 to be fixed to the driving side end cover 116, and one end of the steel ball screw 60 is installed in the first positioning hole 1281.
  • the developing unit 109 also includes a developing driving force receiving unit 132, and the transmission gear 31 is coaxially fixedly arranged with the developing driving force receiving unit 132, and includes a first transmission gear 311, a second transmission gear 312, and a third transmission gear 313.
  • the developing gear 32 is coaxially fixedly arranged with the developing roller 106, and the developing gear 32 is a double-layer gear, including a primary gear 321 and a secondary gear 322, wherein the developing gear 32 is meshed with the transmission gear 31 to receive the driving force from the transmission gear 31 and drive the developing roller 106 to rotate.
  • the drum unit 108 further includes a driving gear 33, a charging roller gear 34 and an intermediate gear 142 at the driving end.
  • the charging roller gear 34 is coaxially fixedly arranged with the charging roller 105.
  • the coupling 14 is provided with a driving force receiving portion 141 connected to the driving force transmission member 180, and the intermediate gear 142 is coaxially fixedly arranged with the coupling 14 (it can be manufactured in one piece or in separate pieces and then fixedly connected).
  • the intermediate gear 142 can be simultaneously connected with the developing gear
  • the wheel 32 meshes with the charging roller gear 34, and the teeth of the intermediate gear 142 can be helical or straight.
  • the photosensitive drum 104 is also coaxially fixed with a driving gear 33, which is used to mesh with the developing gear 32 to drive the photosensitive drum 104 to rotate after receiving the driving force from the developing gear 32.
  • the coupling 14 is rotatably arranged at one end of the photosensitive drum 104, and there is no transmission between the coupling 14 and the photosensitive drum 104, and the coupling 14 cannot transmit the driving force received from the drum drive transmission unit 203 to the photosensitive drum 104. That is, after receiving the power, the coupling 14 is in an idling state relative to the photosensitive drum 104.
  • the drum drive transmission unit 203 approaches the coupling 14, and the coupling 14 is connected to the drum drive transmission unit 203 and receives the power from the drum drive transmission unit 203, so that the intermediate gear 142 also rotates together. Since the intermediate gear 142 is meshed with the charging roller gear 34, the coupling 14 directly transmits the power to the charging roller 105 through the intermediate gear 142 to drive the charging roller 105 to rotate. At this time, the developing driving force receiving unit 132 on the developing unit 109 also receives the driving force from the developing driving force transmission unit in the electronic imaging device, and transmits it to the developing gear 32 meshed therewith through the transmission gear 31.
  • the driving gear 33 Since the driving gear 33 is meshed with the developing gear 32, the driving force is transmitted from the developing driving force receiving unit 132 to the photosensitive drum 104 through the transmission gear 31, the developing gear 32 and the driving gear 33 in sequence, thereby driving the photosensitive drum 104 to rotate. That is, the power of the photosensitive drum 104 comes from the driving force received by the developing driving force receiving unit 132, and the power of the charging roller 105 comes from the driving force received by the coupling 14.
  • the above technical solution provides a new driving force transmission method, which has stable power transmission.
  • the developing driving force receiving unit 132 rotates clockwise after receiving the driving force, thereby generating a force that causes the developing roller 106 to approach the photosensitive drum 104. Therefore, the photosensitive drum 104 and the developing drum 106 are in a state of contact with each other (i.e., a drum-roller contact state), and the process cartridge can perform a normal printing operation.
  • the ball screw 60 provided on the driving side end cover 116 is located in the first positioning hole 1281 of the protective cover 128, thereby preventing the developing unit 109 from moving relative to the drum unit 108.
  • the development driving force transmission unit stops outputting the driving force
  • the driving force transmitted to the development driving force receiving unit 132 disappears
  • the development driving force receiving unit 132 stops rotating
  • the development gear 32 connected to the transmission gear 31 also stops rotating, and can no longer transmit power to the driving gear 33
  • the photosensitive drum 104 stops rotating after losing power.
  • the drum drive transmission unit 203 keeps outputting the driving force
  • the coupling 14 still receives the driving force of the drum drive transmission unit 203, so the intermediate gear 142 and the charging roller gear 34 are still in a rotating state, and the charging roller 105 can also rotate.
  • the charging roller 105 since the charging roller 105 is constantly rotating, the friction force generated between the charging roller 105 and the photosensitive drum 104 is large enough, and the photosensitive drum 104 is also driven to rotate together by the friction between the two, thereby avoiding the situation that after the development work is finished, the photosensitive drum 104 loses the power of the development driving force receiving unit 132 and stops rotating, and friction occurs between the transfer belt, causing the photosensitive drum 104 to be worn.
  • the developing gear 32 no longer rotates, while the intermediate gear 142 is still rotating with the coupling 14, there is interference between the intermediate gear 142 and the developing gear 32, that is, the teeth of the intermediate gear 142 apply a forced thrust to the developing gear 32, so that the developing gear 32 drives the developing roller 106 to move in a direction away from the photosensitive drum 104.
  • the developing unit 109 connected to the developing roller 106 is also forced to rotate counterclockwise, so that the steel ball screw 60 located in the first positioning hole 1281 moves to the second positioning hole 1282, thereby keeping the developing roller 106 and the photosensitive drum 104 in a state of separation from each other (i.e., the drum-roller separation state), thereby solving the problem of the developing roller 106 and the photosensitive drum 104 being in contact for a long time when not working.
  • the photosensitive drum 104 is driven to rotate by the charging roller 105 under the action of friction, and then drives the driving gear 33 to rotate, there will be interference between the driving gear 33 and the developing gear 32, that is, the teeth of the driving gear 33 can also apply a thrust to the developing gear 32, and can apply a thrust to the developing gear 32 together with the intermediate gear 142.
  • the thrust can be applied to the developing gear 32 only by the driving gear 33, that is, the thrust is not applied to the developing gear 32 by the intermediate gear 142, and the intermediate gear 142 can be set to be non-engaged with the developing gear 32.
  • This embodiment is substantially the same as the eighth embodiment, and the main difference is that the charging roller gear 34 is not provided in this embodiment, and the coupling 14 is fixedly connected to the photosensitive drum 104 to transmit the driving force from the drum drive transmission unit 203 to the photosensitive drum 104 .
  • the coupling 14 includes a sleeve 112 and a middle receiving member 111 disposed in the middle of the sleeve 112, the driving gear 33 is coaxially fixedly disposed on the sleeve 112, the sleeve 112 is fixedly disposed with the photosensitive drum 104, one end of the middle receiving member 111 is engaged with the driving force transmission member 180 of the drum driving transmission unit 203 to receive the driving force, and the other end of the middle receiving member 111 is fixedly connected with the sleeve 112, thereby being fixedly connected with the photosensitive drum 104.
  • the sleeve 112 and the middle receiving member 111 may be fixedly connected by a magnetic member 135, or may be fixedly connected by other means.
  • the driving gear 33 meshes with the developing gear 32, so that the photosensitive drum 104 receives the driving force from the developing driving force transmission unit of the main assembly through the driving gear 33, the developing gear 32, the transmission gear 31 and the developing driving force receiving unit 132.
  • the intermediate gear 142 may be provided on the middle receiving member 11, or may not be provided.
  • the photosensitive drum 104 receives the driving force of the developing driving force transmission unit through the driving gear 33 and rotates, while the coupling 14 receives the driving force of the drum driving transmission unit 203 through the middle receiving member 111 and rotates in unison.
  • the developing driving force transmission unit stops outputting the driving force, and the driving force transmitted to the developing driving force receiving unit 132 disappears.
  • the developing driving force receiving unit 132 stops rotating, so the developing gear 32 connected to the transmission gear 31 also stops transmitting, and can no longer transmit power to the driving gear 33.
  • the drum driving transmission unit 203 keeps outputting the driving force, and the coupling 14 still receives the drum driving force.
  • the coupling 14 transmits the driving force of the driving transmission unit 203 to the photosensitive drum 104 through the magnetic part 135, driving the photosensitive drum 104 to rotate, thereby avoiding the situation where the photosensitive drum 104 loses the power of the developing driving force receiving unit 132 after the developing work is completed and stops rotating, causing friction between the transfer belt and causing wear of the photosensitive drum 104.
  • a processing box is provided, and the unspecified parts are generally the same as those in the eighth embodiment, and the main difference is that the method of applying the pushing force is different.
  • the drum unit of this embodiment further includes a first special-shaped gear B143, which is coaxially fixedly arranged with the coupling 14 (it can be manufactured in one piece or manufactured in separate pieces and then fixedly connected).
  • the developing unit further includes a second special-shaped gear B323, which is coaxially fixedly arranged with the developing gear 32 (it can be manufactured in one piece or manufactured in separate pieces and then fixedly connected).
  • the developing gear B32 has a primary gear B321, a secondary gear B322 and a second special-shaped gear B323, wherein the second special-shaped gear B323 is located between the primary gear B321 and the secondary gear B322.
  • the teeth of the first special-shaped gear B143 and/or the second special-shaped gear B323 are provided with non-driving inclined surfaces, which are different from the involute tooth surfaces used by normal gears.
  • the non-driving inclined surfaces are difficult to transmit driving force, but will produce a slipping effect.
  • the teeth of the first special-shaped gear act on the teeth of the second special-shaped gear, the second special-shaped gear will not rotate normally, but will be pushed away by the first special-shaped gear. Compared with normal gears, this special-shaped gear is more conducive to generating forced thrust.
  • the non-driving inclined surface can be a plane or an arc surface, as long as it can make the second special-shaped gear be pushed away.
  • the teeth of the first special-shaped gear B143 and the second special-shaped gear B323 are both triangular in shape.
  • the meshing part of the developing gear and the transmission gear of this embodiment is configured as helical teeth.
  • the developing gear B32 and the second special-shaped gear B323 are configured to be movable in the axial direction.
  • the developing driving force receiving unit 132 receives the driving force from the electronic imaging device and drives the developing gear B32 and the driving gear B33 to rotate, thereby driving the developing roller 106 and the photosensitive drum 104 to rotate.
  • the coupling B14 is also connected to the drum drive transmission unit 203, so the intermediate gear B142 and the first special-shaped gear B143 also rotate accordingly.
  • the developing driving force receiving unit 132 rotates clockwise after receiving the driving force, a force is generated to make the developing roller 106 approach the photosensitive drum 104, so the photosensitive drum 104 and the developing drum 106 are in a state of contact with each other (i.e., drum-roller contact state), and at this time, the first special-shaped gear B143 and the second special-shaped gear B323 are offset from each other, so there is no interference between the two, and the photosensitive drum 104 and the developing drum 106 can stably maintain a state of contact.
  • the developing driving force transmission unit stops outputting the driving force
  • the driving force transmitted to the developing driving force receiving unit 132 disappears
  • the developing driving force receiving unit 132 stops rotating
  • the transmission gear B31 stops rotating accordingly.
  • the coupling B14 continues to rotate
  • the charging roller 105 continues to rotate
  • the photosensitive drum 104 is driven to rotate by the charging roller 105 through the friction force, so that The driving gear B33 rotates accordingly
  • the developing gear B32 is meshed with the driving gear B33. Therefore, the developing gear B32 will continue to rotate after the transmission gear B31 stops rotating.
  • the primary gear B321 of the developing gear B32 moves axially through the helical teeth between the stopped transmission gear B31, and the second special-shaped gear B323 also moves to a position flush with the first special-shaped gear B143.
  • the coupling B14 since the coupling B14 is still rotating, there is a gap between the rotating first special-shaped gear B143 and the second special-shaped gear B323.
  • the first special-shaped gear B143 applies a forced thrust to the second special-shaped gear B323, so that the second special-shaped gear B323 drives the developing roller 106 to move in the direction away from the photosensitive drum 104.
  • the developing unit 109 connected to the developing roller 106 is also forced to rotate counterclockwise, so that the steel ball screw 60 located in the first positioning hole 1281 moves to the second positioning hole 1282, thereby keeping the developing roller 106 and the photosensitive drum 104 in a state of separation from each other (i.e., drum-roller separation state), thereby solving the problem of long-term contact between the developing roller 106 and the photosensitive drum 104 when not working.
  • This embodiment is substantially the same as the eighth embodiment, except that the positioning protrusions of this embodiment do not use steel ball screws.
  • a positioning protrusion C1161 is provided on the driving side end cover 116, and a first positioning hole C1281 and a second positioning hole C1282 are provided on the protective cover C128 at positions corresponding to the positioning protrusion C1161, wherein the first positioning hole C1281 is located below the second positioning hole C1282.
  • the positioning protrusion C1161, the first positioning hole C1281 and the second positioning hole C1282 may specifically adopt a triangular structure.
  • the first positioning hole C1281 and the second positioning hole C1282 are connected.
  • the positioning protrusion C1161 is located in the second positioning hole C1282 so that the developing roller 106 and the photosensitive drum 104 maintain a state of contact with each other.
  • the intermediate gear 142 applies a thrust to the developing gear 32, so that the developing gear 32 drives the developing roller 106 to move in a direction away from the photosensitive drum 104, so that the protective cover C128 connected to the developing roller 106 is also forced to rotate counterclockwise, and the positioning protrusion C1161 moves to the first positioning hole C1281 accordingly, thereby stably maintaining the developing roller 106 and the photosensitive drum 104 in a drum-roller separation state.
  • This embodiment is substantially the same as the eighth embodiment, with the main difference being that the photosensitive drum 104 of this embodiment can move upward and separate from the transfer belt when the processing box is not performing a developing operation.
  • This embodiment provides another structure of the processing box.
  • the intermediate gear 142 and the charging roller gear 34 may not be provided.
  • the charging roller 105 is not driven to rotate by the coupling D14, but is driven to rotate by the photosensitive drum 104 by the friction force.
  • the charging roller 105 stops rotating along with the photosensitive drum 104.
  • it is also possible to continue An intermediate gear 142 and a charging roller gear 34 are provided.
  • the processing box further includes a moving member D151
  • the developing unit 109 further includes a separating member D152, wherein the separating member D152 is movably mounted on the protective cover D128 and can move and rotate in the direction of gravity.
  • a connecting member D40, a supporting member D50 and a fixing member D60 are further provided at one end of the photosensitive drum 104, and there is a gap between the coupling D14 and the connecting member D40 and the supporting member D50, and no transmission relationship is formed, so the coupling D14 cannot transmit power to the photosensitive drum 104.
  • the fixing member D60 is fixedly arranged in the photosensitive drum 104, and the connecting member D40 and the supporting member D50 are rotatably mounted on the fixing member D60, so that the connecting member D40 and the supporting member D50 can act on the photosensitive drum 104 through the fixing member D60, and drive the photosensitive drum 104 to move together in the G1 direction (roughly the up and down direction), but the connecting member D40 and the supporting member D50 do not rotate with the fixing member D60, thereby avoiding affecting the rotational movement of the photosensitive drum 104.
  • the main body D51 of the supporting member D50 is fixed by the clamping portion D41 of the connecting member D40, thereby preventing the supporting member D50 from being separated from the connecting member D40, and when the supporting member D50 is subjected to an external force, it can drive the connecting member D40 and the photosensitive drum 104 to move together in the G1 direction.
  • the driving gear D33 is arranged between the connecting member D40 and the fixing member D60, and the driving gear D33 is coaxially fixedly mounted on the photosensitive drum 104 and meshes with the developing gear D32, and the developing gear D32 is a double-stage gear, and it meshes with the transmission gear D31. Since the transmission gear D31 is fixedly connected to the developing driving force receiving unit 132, the photosensitive drum 104 can receive the driving force from the developing driving force receiving unit 132 through the driving gear D33. That is, the driving force is sequentially transmitted to the photosensitive drum 104 through the developing driving force receiving unit 132, the transmission gear D31, the developing gear D32 and the driving gear D33.
  • the driving side end cover D116 is provided with a slide groove D1161, wherein the slide groove D1161 has a protrusion D1162.
  • the moving member D151 is a long rod-shaped structure, one end of which is provided with a recessed portion, which is formed by a first limiting portion D1511 and a second limiting portion D1512, and the other end is provided with a guide hole D1513.
  • first recessed holes D1514 and second recessed holes D1515 near the guide hole D1513, and the protrusion D1162 can be located in the first recessed hole D1514 or the second recessed hole D1515, and the guide hole D1513 is connected to the fixed column D52 of the support member D50, so that the moving member D151 is installed on the processing box.
  • the moving part D151, the separating part D152, the connecting part D40, the supporting part D50 and the fixing part D60 may also be arranged at the non-driving end of the processing box, may be arranged at both the driving end and the non-driving end, or may be arranged only at the driving end or the non-driving end.
  • the developing driving force receiving unit 132 receives the driving force from the electronic imaging device and drives the developing gear D32 and the driving gear D33 to rotate, thereby driving the developing roller 106 and the photosensitive drum 104 to rotate.
  • the coupling B14 is also connected to the drum drive transmission unit 203.
  • the separating member D152 receives the contact force of the separating mechanism (not shown in the figure) of the electronic imaging device and moves toward the H2 direction (roughly horizontal direction), and drives the entire developing unit 109 to rotate clockwise, thereby generating a force that makes the developing roller 106 approach the photosensitive drum 104, so the photosensitive drum 104 and the developing drum 106 rotate clockwise.
  • the developing driving force transmission unit stops outputting the driving force, and the driving force transmitted to the developing driving force receiving unit 132 disappears.
  • the developing driving force receiving unit 132 stops rotating, and therefore the developing gear B32 connected to the transmission gear B31 also stops rotating, and can no longer transmit power to the driving gear B33.
  • the photosensitive drum 104 also stops rotating after losing power.
  • the separation member D152 is moved toward the H1 direction by the separation force of the separation mechanism (not shown in the figure), and the separation member D152 rotates counterclockwise and moves from the position abutting against the first limit part D1512 to the position abutting against the second limit part D1511, thereby driving the movable member D151 to move in the H1 direction (roughly horizontal direction), and the fixed column D52 moves in the G1 direction (roughly vertical upward direction) under the action of the guide hole D1513.
  • the support member D50 drives the connecting member D40 and the photosensitive drum 104 to move upward in the G1 direction, and finally the photosensitive drum 104 moves upward away from the transfer belt, thereby solving the problem that the photosensitive drum no longer rotates and contacts with the transfer belt for a long time when the processing box stops developing.
  • the second recessed hole D1515 moves to a position abutting against the protrusion D1162 as the movable part D151 moves horizontally, so that the movable part D151 can remain in the horizontal position without moving, thereby keeping the fixed column D52 of the support part D50 at the upper position of the guide hole D1513, so that the photosensitive drum 104 can remain above the transfer belt.
  • the separation member D152 receives the contact force of the separation mechanism (not shown in the figure) of the electronic imaging device and moves toward the direction H2 (roughly horizontally), and drives the entire developing unit 109 to rotate clockwise, thereby generating a force that makes the developing roller 106 approach the photosensitive drum 104, so that the photosensitive drum 104 and the developing drum 106 are in a state of contact with each other (i.e., drum-roller contact state), and at the same time, the moving member D151 is also driven by the separation member D152 to move toward H2 moves, and the fixed column D52 moves vertically downward under the action of the guide hole D1513.
  • the support member D50 drives the connecting member D40 and the photosensitive drum 104 to move in the vertical downward direction, and finally makes the photosensitive drum 104 contact the transfer belt downward to perform the developing work.
  • the limiting protrusion D1521 of the separating member D152 abuts against the second limiting portion D1512, and the first concave hole D1514 moves to the position abutting against the protrusion D1162 with the horizontal movement of the movable member D151.

Abstract

提供了一种鼓单元(108),用于可拆卸地安装于图像形成装置(M)的主组件(170)中,主组件(170)包括鼓驱动传递单元(203),鼓驱动传递单元(203)包括驱动力传递构件(180)以及设置在驱动力传递构件(180)中的第一制动力接合构件(204)和第二制动力接合构件(208),驱动力传递构件(180)包括圆柱形部分(180c)、驱动力传递部(180v)以及定位凸台(180i),鼓单元(108)包括:感光鼓(104);联轴器(14),其同轴设置在感光鼓(108)的一端;联轴器(14)包括中部接收件(111)和套筒(112);套筒(112)上设有驱动力接收件,驱动力接收件能够与驱动力传递构件(180)接合,以将从驱动力传递构件(180)处接收到的动力传递给感光鼓(104)。

Description

一种鼓单元和处理盒 技术领域
本发明涉及图像形成技术领域,尤其涉及鼓单元和处理盒。
背景技术
现有的,在电子照相图像形成装置领域中,电子照相感光构件(以下称为感光鼓)和作用在感光鼓上的处理装置一体地形成为盒(通常称为处理盒)。这种处理盒可从图像形成装置的主组件上拆卸。
现有一类如中国专利CN113574469A所公开的鼓驱动传递单元,其通过多个部件与处理盒上的驱动力接收单元(即联轴器)接合以对其进行驱动和制动。参阅图1所示,现有一种电子照相图像形成装置M,电子照相图像形成装置M包括主组件170、抽屉171和门盖11,主组件170中设置有容纳部、鼓驱动传递单元203、分离机构以及转印单元等,抽屉171可容纳处理盒100,并能够相对主组件170移动以将处理盒100安装至主组件170的容纳部内。门盖11设置在主组件170的外侧,其能够打开或关闭主组件170的容纳部。
参阅图2至图7所示,设置在主组件170上的鼓驱动传递单元203包括驱动力传递组件和制动力施加组件,其中驱动力传递组件包括第一旋转构件201和驱动力传递构件180,第一旋转构件201可旋转地支撑在支撑轴202上,驱动力传递构件180的一端设置有用于接收驱动力的旋转止动部分180b,另一端设置有驱动力传递部180v,驱动力传递构件180以沿轴向M1可移动的方式装配在第一旋转构件201上,通过设置在第一旋转构件201上的旋转止动部分201b和设置在驱动力传递构件180的旋转止动部分180b之间的配合,实现第一旋转构件201带动驱动力传递构件180的旋转。
制动力施加组件包括制动构件206、第一制动力接合构件204、第二制动力接合构件208、第一接合弹簧211、第二弹簧210以及制动传递构件207,其中制动构件206包括固定侧206a和旋转侧206b,固定侧206a与支撑轴202固定连接,旋转侧206b能够相对于固定侧206a旋转并产生制动力,产生制动力的方法可以从使用摩擦和粘度的那些方法中适当地选择。
第一制动力接合构件204和第二制动力接合构件208用于向处理盒100施加制动力,二者可通过旋转止动突起部208c和旋转止动凹部204c卡合的方式组装在一起,二者可以具有同步的动作过程。第二制动力接合构件208位于第一制动力接合构件204的内侧,第一制动力接合构件204的接合部分204b能够与竖直面180x2贴合或相互抵靠。
制动传递构件207的轴部分207b穿过第一制动力接合构件204和第二制动力接合构件208的中部的通孔并连接至制动构件206的旋转侧206b,以能够向第一制动力接合构件204和第二制动力接合构件208传递制动力。
具体的,制动传递构件207的凸缘部分207a设置有突起部207e,对应的在第一制动力接合构件204的凸缘部分204a设置有突起部204e,当制动传递构件207的突起部207e与第一制动力接合构件204的突起部204e接合时,制动传递构件207可向第一制动力接合构件204传递制动力。
第一制动力接合构件204和第二制动力接合构件208能够相对制动传递构件207和制动构件206在轴向M1上移动,当制动传递构件207的突起部207e与第一制动力接合构件204的突起部204e在轴向M1上错开或分离时,第二制动力接合构件208和第一制动力接合构件204将不接收制动力。
继续的,参考图4和图5,第一接合弹簧211的一端抵压在制动构件206的端面206d,另一端抵压在第一制动力接合构件204的凸缘部分204a上,第一接合弹簧211处于被压缩的状态,其沿M1B方向向第一制动力接合构件204施加弹性力,该弹性力可使得制动传递构件207的突起部207e保持与第一制动力接合构件204的突起部204e接合。
第二弹簧210是压缩螺旋弹簧,并且被设置成夹在并压缩在制动构件206的端面206d和制动传递构件207的凸缘部分207a之间,第二弹簧210将排斥力(推压力、弹力)施加到制动构件206的端面206d和制动传递构件207的凸缘部分207a中的每一者。
在上述鼓驱动传递单元203的各部件中,在第一接合弹簧211和第二弹簧210的作用下,制动传递构件207在轴向方向M1A上的端部处的突起部207f抵靠驱动力传递构件180的接触表面180f。驱动力传递构件180在箭头M1B方向上的运动被轴向方向限制部分212管制(限制),使得驱动力传递构件180不会从主组件170侧鼓驱动传递单元203脱落。
在上述鼓驱动传递单元203的各部件中,驱动力传递构件180是能够相对于第一旋转构件201在M1A和M1B方向上移动的,第一制动力接合构件204和第二制动力接合构件208能够相对于制动传递构件207和第一旋转构件201在M1A和M1B方向上移动,也能够相对于驱动力传递构件180在M1A和M1B方向上移动。
参阅图2、图6和图7,驱动力传递构件180包括圆柱形部分180c、驱动力传递部180v和定位凸台180i。圆柱形部分180c在定位凸台180i的周围具有朝向M1B方向的内抵接面180c1。
第一制动力接合构件204具有两个朝向处理盒的方向以爪的形式突出并与联轴器接合的接合部分204b。第二制动力接合构件208具有两个朝向处理盒的 方向以爪的形式突出并与联轴器接合的接合部分208b。驱动力传递部180v靠近第一制动力接合构件204的接合部分204b的一侧设置有斜面180x1和竖直面180x2,背向接合部分204b的一侧设置有竖直表面180x3。
现有的感光鼓的传动方式较为复杂,接合不够稳定,容易脱离,导致动力传递不稳定。
发明内容
根据本发明的一个方面,提供了一种鼓单元,用于可拆卸地安装于图像形成装置的主组件中,所述主组件包括鼓驱动传递单元,所述鼓驱动传递单元包括驱动力传递构件以及设置在所述驱动力传递构件中的第一制动力接合构件和第二制动力接合构件,所述驱动力传递构件包括圆柱形部分、驱动力传递部以及定位凸台,
所述鼓单元包括:
感光鼓;
联轴器,其同轴设置在所述感光鼓的一端;
所述联轴器包括中部接收件和套筒;所述套筒上设有驱动力接收件,所述驱动力接收件能够与所述驱动力传递构件接合,以将从所述驱动力传递构件处接收到的动力传递给所述感光鼓。
本发明通过提供一种包括中部接收件的联轴器,提供了一种新的驱动力传递方式,该方式结构简单、动力传递稳定。
在一些实施方式中,所述套筒套设在所述中部接收件外,所述中部接收件与所述套筒在轴向上固定设置,在周向上可旋转设置,所述套筒与所述感光鼓固定;
所述中部接收件与所述驱动力传递构件的第一制动力接合构件和/或第二制动力接合构件接合,所述中部接收件不向所述感光鼓传递驱动力。
在一些实施方式中,所述联轴器还包括与所述中部接收件朝向所述感光鼓方向的端部固定的固定件,所述固定件与所述套筒朝向所述感光鼓方向的端部抵接;
所述中部接收件的外壁与所述套筒的内壁上分别设有相配合的台阶;
所述固定件与所述台阶共同作用使得所述中部接收件相对于所述套筒在轴向上固定。
在一些实施方式中,所述驱动力传递构件的驱动力传递部设有斜面;
所述驱动力接收件为设置在所述套筒上的朝向远离所述感光鼓方向突起的动力传递部,所述动力传递部用于与所述斜面接合,从而向所述感光鼓传递驱动力。
在一些实施方式中,所述驱动力接收件为与所述套筒固定的环形传递部,所述环形传递部具有与所述驱动力传递构件的圆柱形部分的端部接触并产生摩擦力的摩擦表面,从而通过摩擦力向所述感光鼓传递驱动力。
在一些实施方式中,所述环形传递部的摩擦表面包括用于与所述圆柱形部分的外圆周面接触的第一摩擦表面,以及与所述圆柱形部分的端面接触的第二摩擦表面;或,所述环形传递部采用弹性材料制成,所述环形传递部能够在所述圆柱形部分的压迫力下形变,从而形成与所述圆柱形部分的外圆周面接触的第一摩擦表面,以及与所述圆柱形部分的端面接触的第二摩擦表面。
在一些实施方式中,所述联轴器还包括设置在所述套筒端部的端部接收件;
所述端部接收件上设有引导部和卡合槽,所述联轴器与所述驱动力传递构件接合时,所述引导部引导所述第一制动力接合构件和/或第二制动力接合构件进入到所述卡合槽中形成卡合,所述端部接收件不向所述感光鼓传递驱动力。
本发明还提供一种鼓单元,用于可拆卸地安装于图像形成装置的主组件中,所述主组件包括鼓驱动传递单元,所述鼓驱动传递单元包括驱动力传递构件以及设置在所述驱动力传递构件中的第一制动力接合构件和第二制动力接合构件,所述驱动力传递构件包括圆柱形部分、驱动力传递部以及定位凸台,
所述鼓单元包括:
感光鼓;
联轴器,其同轴设置在所述感光鼓的一端;
所述联轴器包括中部接收件;所述中间接收件能够与所述驱动力传递构件接合,以将从所述驱动力传递构件处接收到的动力传递给所述感光鼓
在一些实施方式中,所述中部接收件与所述感光鼓固定连接,所述中部接收件设有用于供所述驱动力传递构件的定位凸台插入的接收部,所述接收部具有与所述驱动力传递构件的内抵接面接触并产生摩擦力的摩擦端面和/或与所述定位凸台的外圆周面接触并产生摩擦力的摩擦侧壁,从而通过摩擦力向所述感光鼓传递驱动力。
在一些实施方式中,所述中部接收件上设有引导部和卡合槽,所述联轴器与所述驱动力传递构件接合时,所述引导部引导所述第一制动力接合构件和/或第二制动力接合构件进入到所述卡合槽中形成卡合;
所述第一制动力接合构件和/或第二制动力接合构件与所述卡合槽形成传动,或,所述第一制动力接合构件和/或第二制动力接合构件与所述卡合槽形成轴向固定,能够在所述卡合槽中周向移动。
本发明还提供一种处理盒,用于可拆卸地安装于图像形成装置的主组件中,其特征在于,包括根据上述任一项所述的鼓单元。
本发明还提供一种处理盒,用于可拆卸地安装于图像形成装置的主组件中, 所述主组件包括鼓驱动传递单元和显影驱动力传递单元,所述鼓驱动传递单元包括驱动力传递构件以及设置在所述驱动力传递构件中的第一制动力接合构件和第二制动力接合构件,所述处理盒包括:
显影单元,包括显影框架和显影辊;
鼓单元,包括感光框架和感光鼓;
联轴器,其同轴设置在所述感光鼓的一端,所述联轴器与所述鼓驱动传递单元接合以接收驱动力;
所述显影单元还包括显影驱动力接收单元,所述显影驱动用于与所述显影驱动力传递单元接合以接收驱动力,从而带动所述显影辊和所述感光鼓旋转。
在一些实施方式中,
所述显影单元还包括传动齿轮和显影齿轮,所述传动齿轮与所述显影驱动力接收单元同轴固定设置,所述显影齿轮与所述显影辊同轴固定设置,所述传动齿轮与所述显影齿轮啮合;
所述鼓单元还包括驱动齿轮,所述驱动齿轮和所述感光鼓同轴固定设置,所述联轴器可旋转地设置在所述感光鼓的一端;所述驱动齿轮能够与所述显影齿轮啮合,使得所述感光鼓从所述显影驱动力传递单元获得驱动力。
在一些实施方式中,所述鼓单元还包括可旋转地设置在所述感光框架上的充电辊和充电辊齿轮,所述充电辊和充电辊齿轮同轴固定设置;
所述鼓单元还包括中间齿轮,所述中间齿轮与所述联轴器同轴固定设置,所述中间齿轮与所述充电辊齿轮啮合;
当所述显影驱动力传递单元停止输出驱动力且所述鼓驱动传递单元保持输出驱动力时,所述充电辊通过所述充电辊齿轮、所述中间齿轮和所述联轴器从所述鼓驱动传递单元获得驱动力,所述感光鼓通过与所述充电辊的表面摩擦力被带动旋转。
在一些实施方式中,当所述显影驱动力传递单元停止输出驱动力且所述鼓驱动传递单元保持输出驱动力时,所述驱动齿轮随所述感光鼓旋转并对所述显影齿轮施加迫推力,使得所述显影齿轮带动所述显影辊朝远离所述感光鼓的方向移动,所述显影辊与所述感光鼓分离。
在一些实施方式中,所述显影齿轮设置为与所述中间齿轮啮合,当所述显影驱动力传递单元停止输出驱动力且所述鼓驱动传递单元保持输出驱动力时,所述中间齿轮随所述联轴器旋转并对所述显影齿轮施加迫推力,使得所述显影齿轮带动所述显影辊朝远离所述感光鼓的方向移动,所述显影辊与所述感光鼓分离。
在一些实施方式中,所述鼓单元还包括与所述联轴器同轴固定设置的第一异形齿轮;
所述显影单元还包括与所述显影齿轮同轴固定设置的第二异形齿轮,所述显影齿轮和所述第二异形齿轮设置为能够沿轴向移动;所述第一异形齿轮的齿和/或第二异形齿轮的齿设有非驱动斜面,使得其接合时能够产生迫推力;
所述显影齿轮和所述传动齿轮啮合的部分设置为斜齿,当所述显影驱动力传递单元停止输出驱动力且所述鼓驱动传递单元保持输出驱动力时,所述驱动齿轮随所述感光鼓旋转从而带动所述显影齿轮旋转,所述显影齿轮的斜齿与所述传动齿轮的斜齿作用,使得所述显影齿轮沿轴向移动,所述第二异形齿轮从与所述第一异形齿轮相互错位的位置沿轴向移动至与所述第一异形齿轮相互接合的位置,所述第一异形齿轮随所述联轴器旋转并对所述第二异形齿轮施加迫推力,使得所述第二异形齿轮带动所述显影辊朝远离所述感光鼓的方向移动,所述显影辊与所述感光鼓分离。
在一些实施方式中,处理盒还包括设置在所述显影单元和鼓单元的端部的端盖,所述端盖上设有定位突起;
所述显影单元还包括设置在所述显影框架端部的护盖,所述护盖上设有第一定位孔和第二定位孔,当所述显影辊朝远离所述感光鼓的方向移动时,所述显影单元受力旋转,使得所述定位突起从所述第一定位孔处移动至所述第二定位孔处,从而使得所述显影辊和所述感光鼓保持在分离位置。
在一些实施方式中,所述显影单元还包括分离件,所述分离件可活动地与所述显影框架连接,并能够接收所述主组件的分离机构的分离力和接触力而移动;
所述处理盒还包括移动件,所述移动件分别与所述分离件以及所述感光鼓连接;
当所述分离件接收接触力时,所述移动件由所述分离件带动从而驱动所述感光鼓向下移动,与转印带接触;当所述分离件接收分离力时,所述移动件由所述分离件带动从而驱动所述感光鼓向上移动,脱离转印带。
在一些实施方式中,处理盒还包括设置在所述显影单元和鼓单元的端部的端盖,所述移动件设置在所述端盖上并可在水平方向上移动;
所述移动件的第一端与所述分离件相互作用,使得所述移动件在分离件和接触力的作用下在水平方向上移动,所述移动件的第二端与所述感光鼓相互作用,将所述移动件的水平移动转换为所述感光鼓的上下移动。
在一些实施方式中,所述分离件设置有限制突起,所述移动件的第一端设有凹部,所述限制突起设置在所述凹部中并能够带动所述凹部在水平方向上移动;
所述鼓单元还包括支撑件,所述支撑件与所述感光鼓连接,所述支撑件上设有固定柱,所述移动件的第二端设有引导孔,所述固定柱设置在所述引导孔 中并能够随所述引导孔的水平移动而在竖直方向上产生位移,从而带动所述感光鼓上下移动。
在一些实施方式中,处理盒还包括设置在所述显影单元和鼓单元的端部的端盖,所述端盖上还设有突起,所述移动件上设有第一凹孔和第二凹孔;
当所述分离件接收接触力时,所述移动件由所述分离件带动从而驱动所述感光鼓向下移动,与转印带接触,所述第一凹孔移动至与所述突起配合的位置;当所述分离件接收分离力时,所述移动件由所述分离件带动从而驱动所述感光鼓向上移动,脱离转印带,所述第二凹孔移动至与所述突起配合的位置。
在一些实施方式中,所述显影单元还包括传动齿轮和显影齿轮,所述传动齿轮与所述显影驱动力接收单元同轴固定设置,所述显影齿轮与所述显影辊同轴固定设置,所述传动齿轮与所述显影齿轮啮合;
所述鼓单元还包括驱动齿轮,所述驱动齿轮和所述感光鼓同轴固定设置;所述驱动齿轮能够与所述显影齿轮啮合,使得所述感光鼓从所述显影驱动力传递单元获得驱动力;
所述联轴器固定设置在所述感光鼓的一端,使得所述感光鼓从所述鼓驱动传递单元获得驱动力。
附图说明
图1为现有的图像形成装置的结构示意图;
图2为现有的图像形成装置的鼓驱动传递单元的分解示意图;
图3为现有的第一制动力接合构件与制动传递构件的结构示意图;
图4为现有的鼓驱动传递单元的剖视图;
图5为现有的鼓驱动传递单元的剖切透视图;
图6为现有的鼓驱动传递单元的结构示意图;
图7为现有的驱动力传递构件的结构示意图;
图8为本发明实施例一的处理盒的结构示意图;
图9为本发明实施例一的处理盒一角度的整体结构示意图;
图10为本发明实施例一提供的联轴器和感光鼓,以及与其连接的驱动力传递构件结构示意图;
图11为本发明实施例一提供的联轴器和感光鼓,以及与其连接的驱动力传递构件结构分解示意图;
图12为本发明实施例一提供的联轴器和感光鼓,以及与其连接的驱动力传递构件的剖视图;
图13为本发明实施例二提供的联轴器和感光鼓,以及与其连接的驱动力传递构件结构示意图;
图14本发明实施例二的联轴器和感光鼓,以及与其连接的驱动力传递构件的剖视图;
图15为本发明实施例三提供的处理盒一角度的结构示意图;
图16为本发明实施例三的感光鼓和联轴器的局部结构示意图;
图17为本发明实施例三的感光鼓和联轴器的局部结构剖视图;
图18为本发明实施例三的联轴器的部分结构示意图;
图19为本发明实施例四的感光鼓和联轴器的局部结构示意图;
图20为本发明实施例五的感光鼓和联轴器的局部结构示意图;
图21为本发明实施例五的感光鼓和联轴器的局部结构剖视图;
图22为本发明实施例六的感光鼓和联轴器的局部分解结构示意图;
图23为本发明实施例六的感光鼓和联轴器的局部剖视图;
图24为本发明实施例六的感光鼓和联轴器元的局部结构示意图;
图25为本发明实施例七的感光鼓和联轴器的局部结构示意图;
图26为本发明实施例七的套筒的结构示意图;
图27为本发明实施例七的感光鼓和联轴器的局部结构剖视图;
图28为本发明实施例七的旋转构件的结构示意图;
图29为本发明实施例七的联轴器的局部结构放大示意图;
图30为本发明实施例八中的一种处理盒的分解示意图;
图31为本发明实施例八中的从另一角度观察处理盒的分解示意图;
图32为本发明实施例八中的一种处理盒的联轴器部分的剖视图;
图33为本发明实施例八中的处理盒的处于鼓辊接触状态的结构示意图;
图34为本发明实施例八的处理盒的处于鼓辊分离状态的结构示意图;
图35为图37中驱动端的齿轮状态的结构示意图;
图36为本发明实施例九的处理盒去除护盖和驱动侧端盖后的整体结构示意图;
图37本发明实施例九提供的联轴器和感光鼓,以及与其连接的驱动力传递构件的结构示意图;
图38本发明实施例九的联轴器和感光鼓,以及与其连接的驱动力传递构件的剖视图;
图39为本发明实施例十中的处理盒的分解示意图;
图40为本发明实施例十中的处理盒处于鼓辊接触状态的结构示意图;
图41为本发明实施例十中的处理盒处于鼓辊分离状态的结构示意图;
图42为本发明实施例十一中的处理盒的结构示意图;
图43为本发明实施例十二中的处理盒的结构示意图;
图44为本发明实施例十二中的处理盒的联轴器部分的剖视图;
图45为本发明实施例十二中的驱动侧端盖和移动件装配时的结构示意图;
图46为本发明实施例十二中的支撑件和连接件装配时的结构示意图;
图47为本发明实施例十二中的处理盒处于鼓辊接触状态时的结构示意图;
图48为本发明实施例十二中的处理盒处于鼓辊分离状态时的结构示意图。
具体实施方式
下面结合附图对本发明作进一步详细的说明,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
需要说明的是,术语“第一”、“第二”等仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本发明的描述中,“多个”的含义是至少两个,例如两个,三个等,除非另有明确具体的限定。
在本发明中,除非另有明确的规定和限定,术语“安装”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中,除非另有明确的规定和限定,第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触,或第一和第二特征通过中间媒介间接接触。而且,第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方,或仅仅表示第一特征水平高度小于第二特征。
在以上描述中,参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中,对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且,描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外,在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
实施例一
本发明的图像形成装置(也称成像装置、电子成像装置)可以是复印机、传真机、打印机(激光束打印机、LED打印机等)、它们的多功能打印机等。本发明以激光束打印机为例进行说明。处理盒可从图像形成装置的主组件上拆卸,当处理盒中的耗材使用完毕后,需要拆下旧的耗材盒然后将新的耗材盒安装上去。处理盒内容纳有显影剂(比如,碳粉),处理盒也可以称为“处理盒”、“盒”、“碳粉容器”、“粉盒”等。本实施例中,可拆卸的也可以是鼓单元108,当更换鼓单元时,将原耗材盒上的鼓单元108拆下,然后将新的鼓单元108安装到处理盒上,而后将处理盒重新安装到设备主组件上。本实施例的鼓驱动传递单元203采用现有技术中的鼓驱动传递单元203。
参阅图8所示,处理盒包括鼓单元108、显影单元109和端盖,端盖包括驱动侧端盖116和非驱动侧端盖117。鼓单元108包括感光框架115(处理盒外壳之一)、可旋转地支撑在感光框架115上的感光鼓104、充电辊,以及设置在感光鼓104端部的联轴器14,联轴器14与主组件的鼓驱动传递单元203接合以接收驱动力。显影单元109包括显影框架125(处理盒外壳之一)、可旋转地支撑在显影框架125上的显影辊106,显影驱动力接收单元132,以及固定在显影框架125端部的护盖128。当处理盒安装到主组件上时,显影驱动力接收单元132与主组件上的显影驱动力传递单元接合以接收驱动力,进而带动显影辊106旋转。
当图像形成装置不工作时,显影辊106和感光鼓104需要分隔开一定的距离,避免显影辊106与感光鼓104长时间接触而导致感光鼓104被显影辊106上附着的多余显影剂污染、显影辊106变形以及感光鼓104磨损等问题。本实施例中,鼓单元108和显影单元109之间以可相对转动的方式连接,例如显影单元109可以围绕显影驱动力接收单元132的旋转轴线相对于鼓单元108旋转,使得显影辊106与感光鼓104相互接触或相互分离。鼓单元108和显影单元109由设置在处理盒的长度方向上的相应端处的驱动侧端盖116和非驱动侧端盖117连接,并且将处理盒设置有联轴器14的一端定义为驱动端,相对的另外一端则是定义为非驱动端。
具体地,参阅图9,在本实施例中,所述处理盒设有拉簧500,拉簧500的一端设置在护盖128上,另一端则设置在驱动侧端盖116上,因受到拉簧500拉力作用于显影框架125使其下端有绕旋转中心远离感光框架115旋转的趋势,感光框架115远离显影框架125,感光鼓104和显影辊不接触。当图像形成装置开始显影工作时,主组件上的显影驱动力传递单元输出旋转驱动力,驱动力从显影驱动力接收单元132传递至显影框架125,由于驱动力的扭矩以及显影框架125自重的作用力远大于拉簧500对显影框架125的作用力,整个显影框架125绕旋转中心顺时针方向旋转,使得感光鼓104与显影辊接触,从而能够进行显 影工作。
图10-12示意性地显示了根据本发明的实施例一的鼓单元,联轴器14包括中部接收件111、套筒112以及固定件113。
其中,套筒112可旋转地套设在中部接收件111外,套筒112与感光鼓104固定连接。套筒112在沿圆周方向设有朝向远离感光鼓104方向突起的动力传递部112a,具体地,所述动力传递部112a可以设置一个或者多个。中部接收件111设置在套筒112的通孔1122中,中部接收件111外壁和通孔1122内壁上可以设有匹配的台阶,从而限制中部接收件111在朝向感光鼓的方向上沿轴向移动。中部接收件111的端部设有引导部111a和卡合槽111b,引导部111a具体可以是倾斜的引导面,当中部接收件111与驱动力传递构件180的第一制动力接合构件204和/或第二制动力接合构件208接合时,引导部111a引导第一制动力接合构件204和/或第二制动力接合构件208进入到卡合槽111b从而与中部接收件111卡接,从而使得第一制动力接合构件204和/或第二制动力接合构件208接合传动。
固定件113固定在中部接收件111朝向感光鼓104方向的端部,并与套筒112朝向感光鼓方向的端部抵接,从而限制中部接收件111向远离感光鼓的方向上沿轴向移动。固定件113上设有与中部接收件111端部定位孔1111相匹配的安装孔1131,用于插入螺钉与中部接收件111形成固定连接,固定件113的外径可以设置成大于套筒112的通孔1122内径尺寸,使得固定件113与套筒112的端部抵接,使得中部接收件111不会朝远离感光鼓的方向与套筒112脱离。
参阅图11-12,联轴器14的至少一部分与所述驱动力传递构件180接合,接收驱动力传递给感光鼓104。
具体地,在本实施例中联轴器14的套筒112与驱动力传递构件180接合,具体地,套筒112上的动力传递部112a与驱动力传递构件180上的驱动力传递部180v的斜面180x1抵接,接收驱动力。套筒112与所述感光鼓104内壁相贴合,并将从驱动力传递构件180上接收到的驱动力将传递给感光鼓104。而中部接收件111虽然与驱动力传递构件180接合,但其与套筒112在周向上存在间隙P,两者之间可相对旋转,套筒112从驱动力传递构件180接收到的驱动力不传递给中部接收件111,中部接收件111从驱动力传递构件180接收到的驱动力不传递给套筒112和感光鼓104,即感光鼓104的动力只来自于套筒112。
本实施例的提供了一种新的驱动力传递方式,该方式的动力传递稳定。
实施例二
参阅图13-14示意性地显示了根据本发明的实施例二的鼓单元,本实施例与实施例一大体相同,主要不同之处在于:套筒112不设置动力传递部112a, 而是通过在套筒112上设置环形传递部114与驱动力传递构件180之间产生摩擦力来传递驱动力套筒112。
具体地,联轴器14还包括环形传递部114,其中环形传递部114的第一端1241用于与驱动力传递构件180的圆柱形部分180c的端面180k形成摩擦力,其第二端1242固定套接在套筒112上。套筒112与感光鼓104内壁相贴合,通过环形传递部114将驱动力传递给感光鼓104。与实施例一相同的是,中部接收件111虽然与驱动力传递构件180接合,但其与套筒112在周向上存在间隙P,两者之间可相对旋转,套筒112从驱动力传递构件180接收到的驱动力不传递给中部接收件111,中部接收件111从驱动力传递构件180接收到的驱动力不传递给套筒112和感光鼓104,即感光鼓104的动力只来自于套筒112。
可选的,环形传递部114可采用橡胶、硅胶等摩擦系数较大的材质,只要能够与端面180k之间产生摩擦力即可。
实施例三
本实施例与实施例二大体相同,不同之处主要在于:环形传递部114的设置不同。
参阅图19至图21所示为本发明的实施例三的感光鼓104及联轴器14,其中联轴器14包括环形传递部114、套筒112、中部接收件111以及固定中部接收件111的固定件113。
环形传递部114设置为具有摩擦表面的摩擦构件,具体地,环形传递部114具有第一摩擦表面114a和第二摩擦表面114b以在抵接图像形成装置M的驱动力传递构件180的圆柱形部分180c的端部时传递驱动力。其中,第一摩擦表面114a与圆柱形部分180c的外圆周面接触,第二摩擦表面114b与圆柱形部分180c的端面180k接触,在一些实施方式中,也可以只设置第二摩擦表面114b。环形传递部114也可以过盈设置为只具有一个摩擦表面且由摩擦力较大的弹性材料(例如橡胶)制成的环状构件,当环形传递部114与驱动力传递构件180抵接时,环形传递部114被驱动力传递构件180的圆柱形部分180c的端部压迫而凹陷,自行形成第一摩擦表面114a和第二摩擦表面114b,产生较大摩擦力以传递驱动力。
套筒112安装在感光鼓104上且在沿轴向远离感光鼓104的一端设置有一个或多个接触表面112b,环形传递部114设置在套筒112的接触表面112b上,套筒112与感光鼓104固定连接,两者可以是一体成型也可以是分体结构。
在套筒112内可旋转地设置有中部接收件111,即中部接收件111与套筒112不形成传动,中部接收件111设置有接收驱动力传递构件180的定位凸台180i的中空圆柱结构的接收部111c,用于接收第二制动力接合构件208的卡合 槽111b。
联轴器14还包括设置在靠近感光鼓104的一端的固定件113,固定件113与中部接收件111可以通过销钉或螺钉等固定连接。
参阅图20所示,安装鼓单元30时,先将环形传递部114固定在套筒112上,将中部接收件111设置在套筒112内,然后将固定件113与中部接收件111固定连接,最后将套筒112固定设置在感光鼓104上。
参阅图15所示,在一些实施方式中,本发明提供的鼓单元及处理盒的结构同时适用于处理盒的鼓辊接触及分离,因此在套筒112上还可以设置用于处理盒鼓辊接触及分离相对应的结构,具体地,在本实施例中套设在套筒112上的旋转构件323是与显影框架上齿轮A相互配合实现处理盒鼓辊接触及分离结构的部分结构。
参阅图16至图18所示,当处理盒在图像形成装置内安装到位,且图像形成装置的门盖11关闭时,驱动力传递构件180向靠近处理盒的方向(沿M1B方向)突起,中部接收件111的接收部111c接收驱动力传递构件180的定位凸台180i,驱动力传递构件180的第二制动力接合构件208沿中部接收件111的卡合槽111b卡合以保证驱动力传递构件180与联轴器14的稳定连接,此时环形传递部114的第一摩擦表面114a和第二摩擦表面114b与驱动力传递构件180的圆柱形部分180c抵接,当圆柱形部分180c开始旋转时,由于第一摩擦表面114a和第二摩擦表面114b与圆柱形部分180c间产生较大摩擦力,因此环形传递部114在摩擦力的作用下被驱动力传递构件圆柱形部分180c带动旋转,进而将驱动力经套筒112传递至感光鼓104,使得感光鼓104获得平稳的驱动力。
需要说明的是,在本实施例中由于上述各构件间的连接关系,中部接收件111不将接收到的来自驱动力传递构件180的第二制动力接合构件208的力传递至感光鼓104,中部接收件111仅用于卡合第二制动力接合构件208以保证驱动力传递构件180与联轴器14的稳定连接。
本实施例的处理盒设置的联轴器驱动方式简单,便于安装,且连接稳定,能够解决现有处理盒上存在的感光鼓与图像形成装置主组件连接不稳定,驱动传递不顺畅的问题,达到了驱动连接稳定,驱动力传递顺畅的效果,提高了处理盒的品质。
实施例四
本实施例提供另一种鼓单元及处理盒,与实施例三相比,不同之处主要在于:中部接收件111的结构不同。
参阅图19所示为本发明的实施例三的联轴器14,中部接收件111设置有接收驱动力传递构件180的定位凸台180i的中空圆柱结构的接收部111c,用于接 收第二制动力接合构件208的卡合槽111b,以及用于引导第二制动力接合构件208至卡合槽111b的引导部111a。其中,卡合槽111b具体为接收部111c的外圆周面处向径向凹陷的环形槽,引导部111a为接收部111c的外圆周面上沿与轴向倾斜的方向延伸形成的引导槽。
当处理盒在图像形成装置内安装到位,且图像形成装置的门盖11关闭时,驱动力传递构件180向靠近处理盒300的方向(沿M1B方向)突起,中部接收件111的接收部111c接收驱动力传递构件180的定位凸台180i,驱动力传递构件180的第二制动力接合构件208沿中部接收件111的引导部111a移动至卡合槽111b中,此时第二制动力接合构件208与卡合槽111b轴向卡合(即在轴向方向上固定)以保证驱动力传递构件180与联轴器14的稳定连接,此时环形传递部114的第一摩擦表面114a和第二摩擦表面114b与驱动力传递构件180的圆柱形部分180c抵接,当驱动力传递构件圆柱形部分180c开始旋转时,由于第一摩擦表面114a和第二摩擦表面114b与圆柱形部分180c间产生较大摩擦力,因此环形传递部114在摩擦力的作用下被驱动力传递构件圆柱形部分180c带动旋转,进而将驱动力经套筒112传递至感光鼓104,使得感光鼓104获得平稳的驱动力。
需要说明的是,在本实施例中当驱动力传递构件180的第二制动力接合构件208与中部接收件111的卡合槽111b轴向卡合时,第二制动力接合构件208可沿卡合槽111b的周向移动,第二制动力接合构件208的驱动力并不能通过卡合槽111b传递到中部接收件111中。若第二制动力接合构件208与卡合槽111b之间的摩擦力较大使得中部接收件111被带动旋转(即第二制动力接合构件208与卡合槽111b形成传动),由于各构件的连接关系,中部接收件111不能够与套筒112形成传动,不会将接收到的驱动力传递至感光鼓104,中部接收件111仅用于轴向卡合第二制动力接合构件208以保证驱动结构啮合的稳定性。该驱动方式结构简单,便于安装,且连接稳定,驱动力传递顺畅,有利于成像设备的高效运转。
实施例五
本实施例提供另一种联轴器,参阅图20至图21所示为本发明的实施例五的感光鼓104及联轴器14,联轴器14只设置中部接收件111,不设置套筒112和固定件113。
中部接收件111包括接收部111c,接收部111c的外圆周面上设有引导部111a以及卡合槽111b。其中,卡合槽111b具体为接收部111c的外圆周面处向径向凹陷的环形槽,引导部111a为接收部111c的外圆周面上沿与轴向倾斜的方向延伸形成的引导槽。接收部111c还设有摩擦端面111d和中部通孔,中部 通孔用于接收驱动力传递构件180的定位凸台180i,中部通孔的内侧壁上设有摩擦侧壁111e。
摩擦端面111d与驱动力传递构件180的内抵接面180c1抵接以传递驱动力;摩擦侧壁111e可以与定位凸台180i的外圆周面产生较大摩擦以与摩擦端面111d共同传递驱动力;引导部111a用于引导驱动力传递构件180的第二制动力接合构件208移动至卡合槽111b中。联轴器14固定连接在感光鼓104的一端,联轴器14与感光鼓104可以是一体成型也可以是分体结构。特别地,为增大摩擦端面111d和摩擦侧壁111e的摩擦系数,保证驱动力的稳定传递,可以在摩擦端面111d和摩擦侧壁111e上进行表面处理,在本实施例中,优选地,摩擦端面111d和摩擦侧壁111e设置为橡胶面以增大与驱动力传递构件180结合时的摩擦力,同时,能达到相同驱动力传递稳定效果的表面处理方式皆可。
当处理盒在图像形成装置内安装到位,且图像形成装置的门盖11关闭时,驱动力传递构件180向靠近处理盒300的方向(沿M1B方向)突起,联轴器14的接收部111c接收驱动力传递构件180的定位凸台180i且摩擦侧壁111e与驱动力传递构件180的内抵接面180c1接触,驱动力传递构件180的第二制动力接合构件208沿联轴器14的引导部111a移动至卡合槽111b中,此时第二制动力接合构件208与卡合槽111b轴向卡合以保证驱动力传递构件180与联轴器14的稳定连接,此时摩擦端面111d与驱动力传递构件180的内抵接面180c1抵接,当驱动力传递构件180开始旋转时,由于内抵接面180c1与摩擦端面111d之间产生较大摩擦力,因此摩擦端面111d在摩擦力的作用下被驱动力传递构件180带动旋转,进而将驱动力传递给感光鼓104,使得感光鼓104获得平稳的驱动力。该驱动方式结构简单,便于安装,且连接稳定,驱动力传递顺畅,有利于成像设备的高效运转。
实施例六
本实施例与实施例五大体相同,不同之处主要在于:联轴器14还包括套筒112和端部接收件115。
参阅图22至图24所示为本发明实施例的感光鼓104及联轴器14,其中联轴器14包括中部接收件111、套筒112以及端部接收件115。
中部接收件111设置为能够传递驱动力且具有中空圆柱状部的构件,具体地,中部接收件111包括接收部111c、圆台111f以及啮合头111g,接收部111c具有摩擦端面111d和摩擦侧壁111e,当中部接收件111与驱动力传递构件180接合时,中部接收件111的接收部111c能够接收驱动力传递构件180的定位凸台180i,且定位凸台180i与摩擦侧壁111e抵接,摩擦端面111d与驱动力传递构件180的内抵接面180c1抵接,产生能够驱动中部接收件111旋转的较大摩 擦力,使得驱动力传递至中部接收件111。
中部接收件111和套筒112固定连接,啮合头111g设置为三角柱状结构,以与套筒112上的啮合部112c啮合传递驱动力;中部接收件111还设置有抵接端部接收件115的圆台111f。
套筒112固定安装在感光鼓104上,且设置有用于啮合中部接收件111啮合头111g的啮合部112c,以接收驱动力。套筒112与感光鼓104可以是一体成型也可以是分体结构。
联轴器14还包括设置在套筒112端部的端部接收件115,端部接收件115与中部接收件111和套筒112在轴向上固定设置(即轴向上不可相对位移),在轴向上可旋转设置,即端部接收件115与中部接收件111和套筒112均不形成传动关系。端部接收件115具有接合驱动力传递构件180的卡合槽111b,能够使得中部接收件111的接收部111c贯穿设置在其中的贯穿部,用于将端部接收件115安装在中部接收件111上的安装部115a,以及引导驱动力传递构件180第二制动力接合构件208的引导部111a,引导部111a可以是相对轴向倾斜的倾斜面。在本实施例中,安装部115a以卡扣的形式与中部接收件111连接,使得端部接收件115在轴向上与中部接收件111固定,但可相对于中部接收件111周向旋转。
参阅图23所示,在本实施例中,安装时,先将端部接收件115以卡扣的方式连接至中部接收件111上,使得中部接收件111的接收部111c的一部分沿轴向方向暴露在端部接收件115的外侧,以便于接收驱动力;然后通过销钉或螺钉将中部接收件111的啮合头111g与套筒112上的啮合部112c固定连接,最后将套筒112固定设置在感光鼓104上。
在一些实施方式中,本发明提供的鼓单元及处理盒的结构同时适用于处理盒的鼓辊接触及分离,因此在套筒112上还可以设置用于处理盒鼓辊接触及分离相对应的结构,具体地,在本实施例中套设在套筒112上的旋转构件323是与显影框架上齿轮A相互配合实现处理盒鼓辊接触及分离结构的部分结构。
参阅图22至图24所示,当处理盒在图像形成装置内安装到位,且图像形成装置的门盖11关闭时,驱动力传递构件180向靠近处理盒300的方向(沿M1B方向)突起,端部接收件115的引导部111a引导驱动力传递构件180的第二制动力接合构件208至端部接收件115的卡合槽111b,使得二者轴向卡合以保证驱动力传递构件180与联轴器14的稳定连接。此时,驱动力传递构件180的定位凸台180i被中部接收件111的接收部111c接收,定位凸台180i与摩擦侧壁111e抵接,摩擦端面111d与驱动力传递构件180的内抵接面180c1抵接,当驱动力传递构件180开始旋转时,由于摩擦端面111d和摩擦侧壁111e分别与内抵接面180c1和定位凸台180i间产生较大摩擦力,因此中部接收件111在摩擦 力的作用下被驱动力传递构件180带动旋转,进而将驱动力经套筒112传递至感光鼓104,使得感光鼓104获得平稳的驱动力。
需要说明的是,在本实施例中由于上述各构件间的连接关系,端部接收件115与套筒112和中部接收件111之间均不形成传动关系,因此,端部接收件115不将接收到的来自驱动力传递构件180的第二制动力接合构件208的力传递至其它构件,端部接收件115仅用于卡合第二制动力接合构件208以保证驱动力传递构件180与联轴器14的稳定连接。
本实施例的处理盒设置的联轴器驱动方式简单,便于安装,且连接稳定,能够解决现有处理盒上存在的感光鼓与图像形成装置主组件连接不稳定,驱动传递不顺畅的问题,达到了驱动连接稳定,驱动力传递顺畅的效果,提高了处理盒的品质。
实施例七
本实施例与实施例一大体相同。
参阅图25至图27所示为本发明的实施例七的感光鼓104及联轴器14,其中联轴器14包括套筒112、中部接收件111以及固定中部接收件111的固定件113。
套筒112上设有在沿圆周方向设有朝向远离感光鼓方向突起的动力传递部112a和抵接部112d,本实施例中,动力传递部112a和抵接部112d具有两个且沿圆周方向间隔设置。套筒112固定安装在感光鼓104上,中部接收件111可旋转地设置在套筒112内。
动力传递部112a设置有驱动力接收面112a1以接收驱动力传递构件180的斜面180x1传递的驱动力,抵接部112d设置有抵接驱动力传递构件180的竖直表面180x3的抵接面112d1以保证驱动力传递构件180的驱动力传递部180v能在接合过程及驱动力传递过程中处在正确的工作位置,从而实现驱动力的稳定传递。
中部接收件111设置有用于接收驱动力传递构件180的定位凸台180i的中空圆柱结构的接收部111c,用于引导第二制动力接合构件208和第一制动力接合构件204的引导部111a,用于卡合第二制动力接合构件208和第一制动力接合构件204的卡合槽111b以及用于抵接驱动力传递构件180的竖直面180x2以限位保证斜面180x1和驱动力接收面112a1稳定抵接的限位面111h。引导部111a设置为与联轴器14的轴向倾斜的倾斜面,本实施方式中引导部111a的设置方式有利于无论联轴器14与驱动力传递构件180从任意位置接合,引导部111a都可以将第二制动力接合构件208和第一制动力接合构件204引导至卡合槽111b中。
联轴器14还包括设置在靠近感光鼓104的一端的固定件113,固定件113与中部接收件111可以通过销钉或螺钉等固定连接,中部接收件111可旋转地设置在套筒112内,两者之间为非传动连接,固定件113仅保证中部接收件111在套筒112内不沿轴向方向脱出,因此,当中部接收件111接收到来自驱动力传递构件180的力时,中部接收件111不将力传递至套筒112,即不驱动感光鼓104旋转。
参阅图27所示,安装时,先将中部接收件111设置在套筒112内,然后将固定件113与中部接收件111固定连接,最后将套筒112安装在感光鼓104上。
参阅图28所示,本发明提供的鼓单元及处理盒的结构同时适用于处理盒的鼓辊接触及分离,因此在套筒112上还可以设置用于处理盒鼓辊接触及分离相对应的结构,在本实施例中套设在套筒112上的旋转构件323是与显影框架上齿轮A相互配合实现处理盒鼓辊接触及分离结构的部分结构,具体地,参阅图28所示,旋转构件323为大致环状构件,且旋转构件323设置有齿轮部323a以及环状安装部323b,齿轮部323a用于与显影框架上齿轮A相互配合,环状安装部323b具有一个开口且环状安装部323b上设置有一个或多个摩擦凸起323c以增大旋转构件323与套筒112之间的摩擦。
参阅图25至图27所示,当处理盒300在图像形成装置内安装到位,且图像形成装置的门盖11关闭时,驱动力传递构件180向靠近处理盒的方向(沿M1B方向)突起,中部接收件111的接收部111c接收驱动力传递构件180的定位凸台180i,驱动力传递构件180的第二制动力接合构件208和第一制动力接合构件204沿中部接收件111的引导部111a移动至中部接收件111的卡合槽111b内,使得第二制动力接合构件208和第一制动力接合构件204与卡合槽111b卡合以保证驱动力传递构件180与联轴器14的稳定连接,此时中部接收件111接收到来自驱动力传递构件180的力使得中部接收件111在套筒112内空转,同时,套筒112上的动力传递部112a和抵接部112d与驱动力传递构件180抵接,具体地,动力传递部112a的驱动力接收面112a1与斜面180x1抵接,抵接部112d的抵接面112d1与竖直表面180x3抵接,且中部接收件111的限位面111h与驱动力传递构件180的竖直面180x2抵接,因此,驱动力由驱动力传递构件180的斜面180x1通过套筒112的动力传递部112a的驱动力接收面112a1传递至感光鼓104,使得感光鼓104获得平稳的驱动力。
需要说明的是,在本实施例中由于上述各构件间的连接关系,中部接收件111不将接收到的来自驱动力传递构件180的制动力接合构件的力传递至感光鼓104,中部接收件111仅用于卡合第二制动力接合构件208和第一制动力接合构件204及驱动力传递构件180的限位以保证驱动结构啮合的稳定性。
参阅图29所示,在一些实施例中,套筒112的叶片高度X与引导部111a 与套筒112的表平面(即套筒112的端面)的距离Y有关,叶片高度X与引导部111a与套筒112表平面的距离Y根据驱动力传递构件180的相关结构的尺寸和位置对应设置,在一些实施方式中,将高度X设置为与距离Y大致相同。若叶片高度X高于引导部111a与套筒112表平面的距离Y,可能导致驱动力传递构件180的第二制动力接合构件208和第一制动力接合构件204无法与中部接收件111的卡合槽111b卡合的问题;若叶片高度X低于引导部111a与套筒112的表平面的距离Y,则会可能导致驱动力接收面112a1减小,出现驱动力接收不稳定的问题。
本实施例的处理盒设置的联轴器驱动方式简单,便于安装,且连接稳定,能够解决现有处理盒上存在的感光鼓与图像形成装置主组件连接不稳定,驱动传递不顺畅的问题,达到了驱动连接稳定,驱动力传递顺畅的效果,提高了处理盒的品质。
实施例八
本实施例与实施例一的不同之处主要在于:本实施例的感光鼓104不通过联轴器14获得驱动力,而是通过显影单元109的显影驱动力接收单元132获得驱动力。
本实施例的显影单元109在驱动端还包括传动齿轮31、显影齿轮32和轴承126,轴承126设置在显影框架125的端部与护盖128之间。
参阅图30和图31所示,护盖128上设置有第一定位孔1281和第二定位孔1282,其中第一定位孔1281的直径可以较于第二定位孔1282的直径大,第一定位孔1281和第二定位孔1282之间可以具有间隙。驱动侧端盖116在相对应第一定位孔1281处设有定位突起,用于将感光鼓和显影辊保持在分离位置或接触位置。本实施例中,定位突起具体实现为钢珠螺丝60,驱动侧端盖116上开设了一个固定孔1161,钢珠螺丝60可安装到固定孔1161中以固定到驱动侧端盖116上,并且钢珠螺丝60的一端则是安装在第一定位孔1281中。
显影单元109上还包括有显影驱动力接收单元132,传动齿轮31与显影驱动力接收单元132同轴固定设置,其包括第一传动齿轮311、第二传动齿轮312和第三传动齿轮313。显影齿轮32与显影辊106同轴固定设置,显影齿轮32为双层齿轮,包括一级齿轮321和二级齿轮322,其中显影齿轮32与传动齿轮31啮合,以接受来自传动齿轮31的驱动力并带动显影辊106旋转。
鼓单元108在驱动端还包括驱动齿轮33、充电辊齿轮34和中间齿轮142。充电辊齿轮34与充电辊105同轴固定设置。联轴器14设置有与驱动力传递构件180连接的驱动力接收部141,中间齿轮142与联轴器14同轴固定设置(可以是一体制造,也可以是分体制造再固定连接),中间齿轮142可同时与显影齿 轮32和充电辊齿轮34啮合,中间齿轮142的齿牙可以为斜齿或直齿。感光鼓104的还同轴固定设置有驱动齿轮33,用于与显影齿轮32啮合,以接受来自显影齿轮32的驱动力后带动感光鼓104旋转。进一步的,参阅图32所示,联轴器14可旋转地设置在感光鼓104的一端,与感光鼓104之间不传动,联轴器14无法将从鼓驱动传递单元203处接收的驱动力传递到感光鼓104。即联轴器14接收动力后相对于感光鼓104处于空转的状态。
参阅图33所示,当处理盒安装到电子成像装置中后,鼓驱动传递单元203朝着联轴器14靠近,联轴器14与鼓驱动传递单元203连接并接收来自鼓驱动传递单元203的动力,从而使得中间齿轮142也一同旋转。由于中间齿轮142与充电辊齿轮34啮合,因此联轴器14将动力直接通过中间齿轮142传递到充电辊105上,以带动充电辊105转动。此时的显影单元109上的显影驱动力接收单元132也一并接收来自电子成像装置中显影驱动力传递单元的驱动力,并且通过传动齿轮31传递到与之啮合的显影齿轮32上,由于驱动齿轮33与显影齿轮32啮合,因此驱动力从显影驱动力接收单元132处依次通过传动齿轮31、显影齿轮32以及驱动齿轮33传递到感光鼓104,从而带动感光鼓104旋转。也就是说,感光鼓104的动力来源于显影驱动力接收单元132接收的驱动力,而充电辊105的动力则来源于联轴器14接收的驱动力。上述技术方案提供了一种新的驱动力传递方式,该方式的动力传递稳定。
参阅图33所示,当处理盒进行显影工作时,由于显影驱动力接收单元132接收到驱动力后会顺时针旋转,从而会产生一个使得显影辊106朝向感光鼓104靠近的作用力,因此感光鼓104和显影鼓106处于一个彼此接触的状态(即鼓辊接触状态),处理盒能够进行正常地打印操作。并且为了让感光鼓104和显影辊106能够更紧密的接触在一起,设置在驱动侧端盖116上的钢珠螺丝60则是位于护盖128的第一定位孔1281中,从而防止显影单元109相对于鼓单元108移动。
参阅图34和图35所示,当显影工作结束时,显影驱动力传递单元停止输出驱动力,传递至显影驱动力接收单元132的驱动力消失,显影驱动力接收单元132停止旋转,因此与传动齿轮31连接的显影齿轮32也随之停止转动,无法再传递动力到驱动齿轮33处,感光鼓104失去动力后也不再转动。但是此时的鼓驱动传递单元203保持输出驱动力,联轴器14仍然接收鼓驱动传递单元203的驱动力,因此中间齿轮142和充电辊齿轮34仍处于旋转的状态,充电辊105也能够旋转,这时由于充电辊105在不断旋转,充电辊105和感光鼓104之间产生的摩擦力足够大,感光鼓104通过两者之间的摩擦力也被带动着一起转动,从而避免了显影工作结束后由于感光鼓104失去显影驱动力接收单元132的动力后不再转动而和转印带之间发生摩擦,导致感光鼓104受到磨损的情况发生。
进一步的,由于显影齿轮32不再转动,而中间齿轮142随联轴器14仍然处于旋转的状态,中间齿轮142与显影齿轮32之间会存在干涉的情况,即中间齿轮142的齿对显影齿轮32施加了一个迫推力,使得显影齿轮32带动显影辊106朝向远离感光鼓104的方向移动,因此与显影辊106连接的显影单元109也受力逆时针旋转,使得位于第一定位孔1281中的钢珠螺丝60移动到第二定位孔1282中,从而将显影辊106和感光鼓104保持在一个彼此分离的状态(即鼓辊分离状态),解决了显影辊106与感光鼓104不工作长时间接触的问题。
同时,由于显影齿轮32不再转动,而感光鼓104在摩擦力的作用下由充电辊105带动旋转,进而带动驱动齿轮33旋转,驱动齿轮33与显影齿轮32之间也会存在干涉的情况,即驱动齿轮33的齿对显影齿轮32也能够施加迫推力,可以与中间齿轮142一起共同对显影齿轮32施加迫推力。在一些实施方式中,也可以仅通过驱动齿轮33对显影齿轮32施加迫推力,即不通过中间齿轮142对显影齿轮32施加迫推力,中间齿轮142可以设置为与显影齿轮32不啮合。
实施例九
本实施例与实施例八大体相同,不同之处主要在于:本实施例未设置充电辊齿轮34,联轴器14与感光鼓104固定连接,从而向感光鼓104传递来自鼓驱动传递单元203的驱动力。
具体的,参阅图36-38,联轴器14包括套筒112以及设置在套筒112中部的中部接收件111,驱动齿轮33同轴固定设置在套筒112上,套筒112与感光鼓104固定设置,中部接收件111的一端与鼓驱动传递单元203的驱动力传递构件180接合以接收驱动力,中部接收件111的另一端与套筒112固定连接,从而与感光鼓104固定连接。套筒112与中部接收件111之间可以通过磁性件135固定连接,也可以通过其他方式固定连接。
驱动齿轮33与显影齿轮32啮合,使得感光鼓104通过驱动齿轮33、显影齿轮32、传动齿轮31和显影驱动力接收单元132接收来自主组件的显影驱动力传递单元的驱动力。在一些实施方式中,中部接收件11上可以设置中间齿轮142,也可以不设置。
在进行显影工作时,感光鼓104通过驱动齿轮33接收显影驱动力传递单元的驱动力旋转,同时联轴器14通过中部接收件111接收鼓驱动传递单元203的驱动力旋转,两者旋转步调一致。
当显影工作结束时,显影驱动力传递单元停止输出驱动力,传递至显影驱动力接收单元132的驱动力消失,显影驱动力接收单元132停止旋转,因此与传动齿轮31连接的显影齿轮32也随之停止传动,无法再传递动力到驱动齿轮33处,但是此时的鼓驱动传递单元203保持输出驱动力,联轴器14仍然接收鼓 驱动传递单元203的驱动力,联轴器14通过磁性件135将驱动力传递给感光鼓104,带动感光鼓104旋转,从而避免了显影工作结束后由于感光鼓104失去显影驱动力接收单元132的动力后不再转动而和转印带之间发生摩擦,导致感光鼓104受到磨损的情况发生。
实施例十
本实施例中提供了一种处理盒,未指出部分均与实施例八大体相同,不同之处主要在于:迫推力施加的方式不同。
参阅图39所示,本实施例的鼓单元还包括第一异形齿轮B143,第一异形齿轮B143与联轴器14同轴固定设置(可以是一体制造,也可以是分体制造再固定连接)。显影单元还包括第二异形齿轮B323,第二异形齿轮B323与显影齿轮32同轴固定设置(可以是一体制造,也可以是分体制造再固定连接),显影齿轮B32具有一级齿轮B321、二级齿轮B322和第二异形齿轮B323,其中第二异形齿轮B323位于一级齿轮B321和二级齿轮B322之间。第一异形齿轮B143和/或第二异形齿轮B323的齿设有非驱动斜面,与正常齿轮采用的渐开线齿面相区别,非驱动斜面难以传递驱动力,而是会产生打滑效果,当第一异形齿轮的齿作用于第二异形齿轮的齿时,第二异形齿轮不会正常旋转,而是被第一异形齿轮推开。比起正常齿轮,这种异形齿轮更利于产生迫推力。该非驱动斜面可以是平面也可以是弧形面,只要能够使得第二异形齿轮被推开的形状即可。可选的,第一异形齿轮B143和第二异形齿轮B323的齿牙均为三角形形状。
本实施例的显影齿轮和传动齿轮啮合的部分设置为斜齿。显影齿轮B32和第二异形齿轮B323设置为能够沿轴向移动。
参阅图40所示,当处理盒进行显影工作时,显影驱动力接收单元132接收来自电子成像装置的驱动力后带动显影齿轮B32和驱动齿轮B33旋转,进而带动显影辊106和感光鼓104转动。此时的联轴器B14也与鼓驱动传递单元203连接,因此中间齿轮B142和第一异形齿轮B143也随之转动。由于显影驱动力接收单元132接收到驱动力后会顺时针旋转,从而会产生一个使得显影辊106朝向感光鼓104靠近的作用力,因此感光鼓104和显影鼓106处于一个彼此接触的状态(即鼓辊接触状态),而此时的第一异形齿轮B143和第二异形齿轮B323彼此错位,因此两者之间不会产生干涉,感光鼓104和显影鼓106能够稳定保持接触的状态。
参阅图41所示,当显影工作结束时,显影驱动力传递单元停止输出驱动力,传递至显影驱动力接收单元132的驱动力消失,显影驱动力接收单元132停止旋转,因此传动齿轮B31随之停止转动,但是由于联轴器B14还在继续转动,因此充电辊105继续旋转,感光鼓104通过摩擦力被充电辊105带动旋转,使 得驱动齿轮B33随之旋转,而显影齿轮B32与驱动齿轮B33啮合在一起,故显影齿轮B32在传动齿轮B31停止转动后还会继续旋转,因此显影齿轮B32的一级齿轮B321通过与停止转动的传动齿轮B31两者之间的斜齿作用,使得显影齿轮B32沿轴向移动,第二异形齿轮B323也随之移动到与第一异形齿轮B143平齐的位置,而这时由于联轴器B14仍然旋转,因此转动的第一异形齿轮B143与第二异形齿轮B323之间会存在干涉,即第一异形齿轮B143对第二异形齿轮B323施加了一个迫推力,使得第二异形齿轮B323带动显影辊106朝向远离感光鼓104的方向移动,因此与显影辊106连接的显影单元109也受力逆时针旋转,使得位于第一定位孔1281中的钢珠螺丝60移动到第二定位孔1282中,从而将显影辊106和感光鼓104保持在一个彼此分离的状态(即鼓辊分离状态),解决了显影辊106与感光鼓104不工作长时间接触的问题。
实施例十一
本实施例与实施例八大体相同,不同之处在于:本实施例的定位突起不采用钢珠螺丝。
参阅图42所示,驱动侧端盖116上设有定位突起C1161,而护盖C128上在定位突起C1161相应位置处设有第一定位孔C1281和第二定位孔C1282,其中第一定位孔C1281位于第二定位孔C1282的下方。定位突起C1161、第一定位孔C1281和第二定位孔C1282具体可采用三角形结构。第一定位孔C1281和第二定位孔C1282相连。
具体的,当处理盒进行显影工作时,定位突起C1161位于第二定位孔C1282中以使得显影辊106和感光鼓104保持彼此接触的状态。而当处理盒停止显影工作时,与实施例九的工作原理一样,中间齿轮142对显影齿轮32施加了一个迫推力,使得显影齿轮32带动显影辊106朝向远离感光鼓104的方向移动,因此与显影辊106连接的护盖C128也受力逆时针旋转,定位突起C1161则是随之移动到第一定位孔C1281中,从而将显影辊106和感光鼓104稳定的保持在鼓辊分离的状态。
实施例十二
本实施例与实施例八大体相同,主要不同在于:本实施例的感光鼓104在处理盒不进行显影工作时能够向上移动,脱离转印带。
本实施例提供了另外一种结构的处理盒。本实施例可以不设置中间齿轮142和充电辊齿轮34,当处理盒进行显影工作时,充电辊105不由联轴器D14驱动旋转,而是依靠摩擦力由感光鼓104带动旋转,当处理盒显影工作结束时,充电辊105随感光鼓104停止旋转而停止旋转。在其他实施方式中,也可以继续 设置中间齿轮142和充电辊齿轮34。
参阅图43和图44所示,处理盒还包括移动件D151,显影单元109还包括分离件D152,其中分离件D152可活动地安装在护盖D128上并且能够在重力方向上移动和做旋转运动。感光鼓104的一端还设有连接件D40、支撑件D50和固定件D60,联轴器D14与连接件D40和支撑件D50之间具有间隙,不形成传动关系,因此联轴器D14无法将动力传递到感光鼓104上。固定件D60固定设置在感光鼓104中,并且连接件D40和支撑件D50可旋转地安装在固定件D60上,使得连接件D40和支撑件D50能够通过固定件D60作用于感光鼓104上,并带动感光鼓104在G1方向(大致为上下方向)一同运动,但连接件D40和支撑件D50不随固定件D60转动,从而避免影响感光鼓104的旋转运动。参阅图44所示,支撑件D50的主体D51被连接件D40的夹持部D41固定住,从而防止支撑件D50与连接件D40脱离,当支撑件D50受到外部的作用力后能够带动连接件D40连同感光鼓104一同在G1方向运动。
进一步的,驱动齿轮D33设置在连接件D40和固定件D60之间,驱动齿轮D33同轴固定安装在感光鼓104上并与显影齿轮D32啮合,显影齿轮D32为双级齿轮,并且其与传动齿轮D31啮合。由于传动齿轮D31又与显影驱动力接单元132固定连接,因此感光鼓104能够通过驱动齿轮D33接收来自显影驱动力接收单元132的驱动力。即驱动力依次通过显影驱动力接收单元132、传动齿轮D31、显影齿轮D32和驱动齿轮D33传递到感光鼓104上。
参阅图45所示,驱动侧端盖D116设有滑槽D1161,其中滑槽D1161上具有突起D1162。移动件D151为一长杆形结构,其一端设有凹部,凹部由第一限位部D1511和第二限位部D1512形成,另一端则设有引导孔D1513。在靠近引导孔D1513处还具有第一凹孔D1514和第二凹孔D1515,而突起D1162可位于第一凹孔D1514或第二凹孔D1515中,引导孔D1513则是与支撑件D50的固定柱D52连接,从而将移动件D151安装到处理盒上。在其他实施方式中,移动件D151、分离件D152、连接件D40、支撑件D50和固定件D60也可以设置在处理盒的非驱动端,可以同时设置在驱动端与非驱动端,也可以只设置在驱动端或非驱动端。
参阅图47所示,当处理盒进行显影工作时,显影驱动力接收单元132接收来自电子成像装置的驱动力后带动显影齿轮D32和驱动齿轮D33旋转,进而带动显影辊106和感光鼓104转动。此时的联轴器B14也与鼓驱动传递单元203连接,由于显影驱动力接收单元132接收到驱动力后会顺时针旋转,同时分离件D152接收到电子成像装置的分离机构(图中未示出)的接触力朝向H2方向(大致为水平方向)移动,并带动整个显影单元109顺时针旋转,从而会产生一个使得显影辊106朝向感光鼓104靠近的作用力,因此感光鼓104和显影鼓106 处于一个彼此接触的状态(即鼓辊接触状态),而这时分离件D152的限制突起D1521与第二限位部D1512抵接,突起D1162位于第一凹孔D1514中,从而使得移动件D151能够保持在该水平位置不移动,从而使支撑件D50的固定柱D52保持在引导孔D1513的下部位置,从而使得感光鼓104能够保持与转印带的稳定接触。
参阅图48所示,当显影工作结束时,显影驱动力传递单元停止输出驱动力,传递至显影驱动力接收单元132的驱动力消失,显影驱动力接收单元132停止旋转,因此与传动齿轮B31连接的显影齿轮B32也随之停止转动,无法再传递动力到驱动齿轮B33处,感光鼓104失去动力后也不再转动。为了防止显影工作结束后由于感光鼓104失去显影驱动力接收单元的动力后不再转动而和转印带之间发生摩擦,导致感光鼓104受到磨损的情况发生,此时的分离件D152受到分离机构(图中未示出)的分离力朝向H1方向移动,分离件D152随之逆时针旋转,并从与第一限位部D1512抵接的位置移动到与第二限位部D1511抵接的位置,从而带动移动件D151往H1方向(大致为水平方向)移动,并且固定柱D52在引导孔D1513的作用下随之往G1方向(大致为竖直向上方向)移动,因此支撑件D50带动连接件D40和感光鼓104一同朝着G1方向向上移动,最终使得感光鼓104向上远离了转印带,解决了处理盒停止显影工作时,感光鼓不再旋转后而与转印带长时间接触的问题。此时,第二凹孔D1515随移动件D151的水平移动而移动至与突起D1162抵接的位置,使得移动件D151能够保持在该水平位置上不移动,从而使支撑件D50的固定柱D52保持在引导孔D1513的上部位置,从而使得感光鼓104能够保持在转印带的上方。
当处理盒需要再次进行显影工作时,分离件D152接收到电子成像装置的分离机构(图中未示出)的接触力朝向H2方向(大致为水平方向)移动,并带动整个显影单元109顺时针旋转,从而会产生一个使得显影辊106朝向感光鼓104靠近的作用力,因此感光鼓104和显影鼓106处于一个彼此接触的状态(即鼓辊接触状态),同时,移动件D151在分离件D152带动下也往H2方向移动,固定柱D52在引导孔D1513的作用下随之往竖直向下移动,因此支撑件D50带动连接件D40和感光鼓104一同朝着竖直向下方向移动,最终使得感光鼓104向下与转印带接触,能够进行显影工作,而这时分离件D152的限制突起D1521与第二限位部D1512抵接,第一凹孔D1514随移动件D151的水平移动而移动至与突起D1162抵接的位置。
以上所述的仅是本发明的一些实施方式。对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出若干变形和改进,或对上述技术方案进行自由组合,包括对上述不同实施方式之间的技术特征进行自由组合,这些都属于本发明的保护范围。

Claims (23)

  1. 一种鼓单元,用于可拆卸地安装于图像形成装置的主组件中,所述主组件包括鼓驱动传递单元,所述鼓驱动传递单元包括驱动力传递构件以及设置在所述驱动力传递构件中的第一制动力接合构件和第二制动力接合构件,所述驱动力传递构件包括圆柱形部分、驱动力传递部以及定位凸台,
    所述鼓单元包括:
    感光鼓;
    联轴器,其同轴设置在所述感光鼓的一端;
    其特征在于,所述联轴器包括中部接收件和套筒;所述套筒上设有驱动力接收件,所述驱动力接收件能够与所述驱动力传递构件接合,以将从所述驱动力传递构件处接收到的动力传递给所述感光鼓。
  2. 根据权利要求1所述的鼓单元,其特征在于,所述套筒套设在所述中部接收件外,所述中部接收件与所述套筒在轴向上固定设置,在周向上可旋转设置,所述套筒与所述感光鼓固定;
    所述中部接收件与所述驱动力传递构件的第一制动力接合构件和/或第二制动力接合构件接合,所述中部接收件不向所述感光鼓传递驱动力。
  3. 根据权利要求2所述的鼓单元,其特征在于,所述联轴器还包括与所述中部接收件朝向所述感光鼓方向的端部固定的固定件,所述固定件与所述套筒朝向所述感光鼓方向的端部抵接;
    所述中部接收件的外壁与所述套筒的内壁上分别设有相配合的台阶;
    所述固定件与所述台阶共同作用使得所述中部接收件相对于所述套筒在轴向上固定。
  4. 根据权利要求2所述的鼓单元,其特征在于,所述驱动力传递构件的驱动力传递部设有斜面;
    所述驱动力接收件为设置在所述套筒上的朝向远离所述感光鼓方向突起的动力传递部,所述动力传递部用于与所述斜面接合,从而向所述感光鼓传递驱动力。
  5. 根据权利要求2所述的鼓单元,其特征在于,所述驱动力接收件为与所述套筒固定的环形传递部,所述环形传递部具有与所述驱动力传递构件的圆柱形部分的端部接触并产生摩擦力的摩擦表面,从而通过摩擦力向所述感光鼓传 递驱动力。
  6. 根据权利要求5所述的鼓单元,其特征在于,所述环形传递部的摩擦表面包括用于与所述圆柱形部分的外圆周面接触的第一摩擦表面,以及与所述圆柱形部分的端面接触的第二摩擦表面;或,所述环形传递部采用弹性材料制成,所述环形传递部能够在所述圆柱形部分的压迫力下形变,从而形成与所述圆柱形部分的外圆周面接触的第一摩擦表面,以及与所述圆柱形部分的端面接触的第二摩擦表面。
  7. 根据权利要求1所述的鼓单元,其特征在于,所述联轴器还包括设置在所述套筒端部的端部接收件;
    所述端部接收件上设有引导部和卡合槽,所述联轴器与所述驱动力传递构件接合时,所述引导部引导所述第一制动力接合构件和/或第二制动力接合构件进入到所述卡合槽中形成卡合,所述端部接收件不向所述感光鼓传递驱动力。
  8. 一种鼓单元,用于可拆卸地安装于图像形成装置的主组件中,所述主组件包括鼓驱动传递单元,所述鼓驱动传递单元包括驱动力传递构件以及设置在所述驱动力传递构件中的第一制动力接合构件和第二制动力接合构件,所述驱动力传递构件包括圆柱形部分、驱动力传递部以及定位凸台,
    所述鼓单元包括:
    感光鼓;
    联轴器,其同轴设置在所述感光鼓的一端;
    其特征在于,所述联轴器包括中部接收件;所述中间接收件能够与所述驱动力传递构件接合,以将从所述驱动力传递构件处接收到的动力传递给所述感光鼓。
  9. 根据权利要求8所述的鼓单元,其特征在于,所述中部接收件与所述感光鼓固定连接,所述中部接收件设有用于供所述驱动力传递构件的定位凸台插入的接收部,所述接收部具有与所述驱动力传递构件的内抵接面接触并产生摩擦力的摩擦端面和/或与所述定位凸台的外圆周面接触并产生摩擦力的摩擦侧壁,从而通过摩擦力向所述感光鼓传递驱动力。
  10. 根据权利要求2至6、8中任一项所述的鼓单元,其特征在于,所述中部接收件上设有引导部和卡合槽,所述联轴器与所述驱动力传递构件接合时,所述引导部引导所述第一制动力接合构件和/或第二制动力接合构件进入到所 述卡合槽中形成卡合;
    所述第一制动力接合构件和/或第二制动力接合构件与所述卡合槽形成传动,或,所述第一制动力接合构件和/或第二制动力接合构件与所述卡合槽形成轴向固定,能够在所述卡合槽中周向移动。
  11. 一种处理盒,用于可拆卸地安装于图像形成装置的主组件中,其特征在于,包括根据权利要求1-10中任一项所述的鼓单元。
  12. 一种处理盒,用于可拆卸地安装于图像形成装置的主组件中,所述主组件包括鼓驱动传递单元和显影驱动力传递单元,所述鼓驱动传递单元包括驱动力传递构件以及设置在所述驱动力传递构件中的第一制动力接合构件和第二制动力接合构件,所述处理盒包括:
    显影单元,包括显影框架和显影辊;
    鼓单元,包括感光框架和感光鼓;
    联轴器,其同轴设置在所述感光鼓的一端,所述联轴器与所述鼓驱动传递单元接合以接收驱动力;
    其特征在于,所述显影单元还包括显影驱动力接收单元,所述显影驱动用于与所述显影驱动力传递单元接合以接收驱动力,从而带动所述显影辊和所述感光鼓旋转。
  13. 根据权利要求12所述的处理盒,其特征在于,
    所述显影单元还包括传动齿轮和显影齿轮,所述传动齿轮与所述显影驱动力接收单元同轴固定设置,所述显影齿轮与所述显影辊同轴固定设置,所述传动齿轮与所述显影齿轮啮合;
    所述鼓单元还包括驱动齿轮,所述驱动齿轮和所述感光鼓同轴固定设置,所述联轴器可旋转地设置在所述感光鼓的一端;所述驱动齿轮能够与所述显影齿轮啮合,使得所述感光鼓从所述显影驱动力传递单元获得驱动力。
  14. 根据权利要求13所述的处理盒,其特征在于,所述鼓单元还包括可旋转地设置在所述感光框架上的充电辊和充电辊齿轮,所述充电辊和充电辊齿轮同轴固定设置;
    所述鼓单元还包括中间齿轮,所述中间齿轮与所述联轴器同轴固定设置,所述中间齿轮与所述充电辊齿轮啮合;
    当所述显影驱动力传递单元停止输出驱动力且所述鼓驱动传递单元保持输出驱动力时,所述充电辊通过所述充电辊齿轮、所述中间齿轮和所述联轴器从 所述鼓驱动传递单元获得驱动力,所述感光鼓通过与所述充电辊的表面摩擦力被带动旋转。
  15. 根据权利要求14所述的处理盒,其特征在于,当所述显影驱动力传递单元停止输出驱动力且所述鼓驱动传递单元保持输出驱动力时,所述驱动齿轮随所述感光鼓旋转并对所述显影齿轮施加迫推力,使得所述显影齿轮带动所述显影辊朝远离所述感光鼓的方向移动,所述显影辊与所述感光鼓分离。
  16. 根据权利要求14所述的处理盒,其特征在于,所述显影齿轮设置为与所述中间齿轮啮合,当所述显影驱动力传递单元停止输出驱动力且所述鼓驱动传递单元保持输出驱动力时,所述中间齿轮随所述联轴器旋转并对所述显影齿轮施加迫推力,使得所述显影齿轮带动所述显影辊朝远离所述感光鼓的方向移动,所述显影辊与所述感光鼓分离。
  17. 根据权利要求14所述的处理盒,其特征在于,所述鼓单元还包括与所述联轴器同轴固定设置的第一异形齿轮;
    所述显影单元还包括与所述显影齿轮同轴固定设置的第二异形齿轮,所述显影齿轮和所述第二异形齿轮设置为能够沿轴向移动;所述第一异形齿轮的齿和/或第二异形齿轮的齿设有非驱动斜面,使得其接合时能够产生迫推力;
    所述显影齿轮和所述传动齿轮啮合的部分设置为斜齿,当所述显影驱动力传递单元停止输出驱动力且所述鼓驱动传递单元保持输出驱动力时,所述驱动齿轮随所述感光鼓旋转从而带动所述显影齿轮旋转,所述显影齿轮的斜齿与所述传动齿轮的斜齿作用,使得所述显影齿轮沿轴向移动,所述第二异形齿轮从与所述第一异形齿轮相互错位的位置沿轴向移动至与所述第一异形齿轮相互接合的位置,所述第一异形齿轮随所述联轴器旋转并对所述第二异形齿轮施加迫推力,使得所述第二异形齿轮带动所述显影辊朝远离所述感光鼓的方向移动,所述显影辊与所述感光鼓分离。
  18. 根据权利要求14所述的处理盒,其特征在于,还包括设置在所述显影单元和鼓单元的端部的端盖,所述端盖上设有定位突起;
    所述显影单元还包括设置在所述显影框架端部的护盖,所述护盖上设有第一定位孔和第二定位孔,当所述显影辊朝远离所述感光鼓的方向移动时,所述显影单元受力旋转,使得所述定位突起从所述第一定位孔处移动至所述第二定位孔处,从而使得所述显影辊和所述感光鼓保持在分离位置。
  19. 根据权利要求13所述的处理盒,其特征在于,所述显影单元还包括分离件,所述分离件可活动地与所述显影框架连接,并能够接收所述主组件的分离机构的分离力和接触力而移动;
    所述处理盒还包括移动件,所述移动件分别与所述分离件以及所述感光鼓连接;
    当所述分离件接收接触力时,所述移动件由所述分离件带动从而驱动所述感光鼓向下移动,与转印带接触;当所述分离件接收分离力时,所述移动件由所述分离件带动从而驱动所述感光鼓向上移动,脱离转印带。
  20. 根据权利要求19所述的处理盒,其特征在于,还包括设置在所述显影单元和鼓单元的端部的端盖,所述移动件设置在所述端盖上并可在水平方向上移动;
    所述移动件的第一端与所述分离件相互作用,使得所述移动件在分离件和接触力的作用下在水平方向上移动,所述移动件的第二端与所述感光鼓相互作用,将所述移动件的水平移动转换为所述感光鼓的上下移动。
  21. 根据权利要求20所述的处理盒,其特征在于,所述分离件设置有限制突起,所述移动件的第一端设有凹部,所述限制突起设置在所述凹部中并能够带动所述凹部在水平方向上移动;
    所述鼓单元还包括支撑件,所述支撑件与所述感光鼓连接,所述支撑件上设有固定柱,所述移动件的第二端设有引导孔,所述固定柱设置在所述引导孔中并能够随所述引导孔的水平移动而在竖直方向上产生位移,从而带动所述感光鼓上下移动。
  22. 根据权利要求19所述的处理盒,其特征在于,还包括设置在所述显影单元和鼓单元的端部的端盖,所述端盖上还设有突起,所述移动件上设有第一凹孔和第二凹孔;
    当所述分离件接收接触力时,所述移动件由所述分离件带动从而驱动所述感光鼓向下移动,与转印带接触,所述第一凹孔移动至与所述突起配合的位置;当所述分离件接收分离力时,所述移动件由所述分离件带动从而驱动所述感光鼓向上移动,脱离转印带,所述第二凹孔移动至与所述突起配合的位置。
  23. 根据权利要求12所述的处理盒,其特征在于,所述显影单元还包括传动齿轮和显影齿轮,所述传动齿轮与所述显影驱动力接收单元同轴固定设置,所述显影齿轮与所述显影辊同轴固定设置,所述传动齿轮与所述显影齿轮啮合;
    所述鼓单元还包括驱动齿轮,所述驱动齿轮和所述感光鼓同轴固定设置;所述驱动齿轮能够与所述显影齿轮啮合,使得所述感光鼓从所述显影驱动力传递单元获得驱动力;
    所述联轴器固定设置在所述感光鼓的一端,使得所述感光鼓从所述鼓驱动传递单元获得驱动力。
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