Processing box

Abstract

The invention discloses a process cartridge which is detachably mounted in an electronic imaging device, the electronic imaging device is provided with a driving unit, the process cartridge comprises a photosensitive unit, the photosensitive unit comprises a photosensitive frame and a drum unit rotatably supported on the photosensitive frame, the drum unit comprises a photosensitive drum and a power receiving unit, the axial direction of the photosensitive drum is parallel to the length direction, and the power receiving unit is connected with the photosensitive frame; the power receiving unit is arranged at the driving end of the photosensitive drum, and the power receiving unit is used for being jointed with the driving coupling to receive the driving force; and the straightening structure is arranged at the driving end of the processing box, and the straightening structure can be in contact with the driving coupling to straighten the driving coupling, so that the axis of the driving coupling is parallel to the axis of the power receiving unit. According to the scheme, the power receiving unit can be smoothly and quickly jointed with the driving coupler, and the power receiving unit can be ensured to be stably jointed with the driving unit of the electronic imaging device to transmit driving force.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic imaging devices, and in particular to a processing box. Background Art

[0002] In the prior art, an electronic imaging device generally includes a driving unit for outputting a rotational driving force, and a processing box is detachably mounted on the electronic imaging device and cooperates with the driving unit to receive the rotational driving force output by the driving unit. Generally, the processing box includes a power receiving unit, a developing unit, a developer, a powder control unit, and a box body for accommodating the above units. The power receiving unit is arranged at one end of the processing box along the direction of the central axis of rotation of the developing unit, and according to different types of processing box structures, some processing boxes may also include a photosensitive unit, a charging unit, a cleaning unit, and a stirring unit, etc. When the processing box is installed on the electronic imaging device, the power receiving unit and the driving unit of the electronic imaging device are engaged with each other, so as to transmit the rotational driving force output by the driving unit to the processing box, so as to drive the rotating unit (such as the developing unit, the photosensitive unit, the stirring unit, etc.) inside the processing box to rotate, thereby participating in the development work of the electronic imaging device.

[0003] However, in the prior art, the initial state of the driving unit is tilted, that is, the driving unit and the power receiving unit are not coaxial. During the contact and engagement process between the power receiving unit and the driving unit, structural interference will occur between the two, making it difficult or impossible for the power receiving unit and the driving unit to accurately engage with each other and transmit the driving force, so that it takes a certain amount of time for the power receiving unit and the driving unit to engage, affecting the working efficiency of the processing box. Summary of the invention

[0004] According to one aspect of the present invention, there is provided a process cartridge, which is detachably mounted in an electronic imaging device, the electronic imaging device having a driving side and a non-driving side, the driving side being provided with a driving unit, the process cartridge cooperating with the driving unit to receive a driving force output by the driving unit, the driving unit being rotatably connected with a driving coupling, the process cartridge having opposite driving ends and non-driving ends in a length direction, the process cartridge comprising:

[0005] A photosensitive unit, comprising a photosensitive frame and a drum unit rotatably supported on the photosensitive frame, wherein the drum unit comprises a photosensitive drum and a power receiving unit, wherein the axial direction of the photosensitive drum is parallel to the length direction, the power receiving unit is arranged at the driving end of the photosensitive drum, and the power receiving unit is used to engage with the driving coupling to receive the driving force;

[0006] The alignment structure is arranged at the driving end of the processing box, and the alignment structure can contact the driving coupling to align the driving coupling so that the axis of the driving coupling is parallel to the axis of the power receiving unit.

[0007] In some embodiments, the drum unit is capable of axially moving relative to the processing box between a contact position and a retracted position, wherein the alignment structure is capable of contacting the drive coupling in the contact position and the alignment structure is out of contact with the drive coupling in the retracted position.

[0008] In some embodiments, further comprising a telescopic structure for moving the drum unit relative to the process cartridge between a contact position and a retracted position;

[0009] The telescopic structure comprises a first elastic member and a limiting mechanism, wherein the first elastic member is configured to exert a force on the drum unit to move the drum unit to a contact position;

[0010] The stop mechanism is configured to enable the drum unit to be moved to the retracted position and to be held in the retracted position.

[0011] In some embodiments, the limiting mechanism includes a pressure rod and a second elastic member, the pressure rod is movably disposed on the photosensitive frame, the moving direction of the pressure rod intersects with the axial direction of the drum unit, and the second elastic member is disposed between the pressure rod and the photosensitive frame.

[0012] In some embodiments, the pressure rod is provided with an inclined surface, and under the action of the second elastic member, the pressure rod moves toward the power receiving unit, contacts the power receiving unit through the inclined surface, and pushes the drum unit to move toward the retracted position.

[0013] In some embodiments, during the process of installing the processing box to the electronic imaging device, the pressure rod contacts and interferes with the electronic imaging device, causing the pressure rod to compress the second elastic member to move away from the power receiving unit, and the drum unit moves toward the contact position under the action of the first elastic member.

[0014] In some embodiments, the process cartridge is axially movable within the electronic imaging device.

[0015] In some embodiments, the processing box moves axially to move the alignment structure between a contact position and a retracted position. When in the contact position, the alignment structure can contact the drive coupling, and when in the retracted position, the alignment structure is out of contact with the drive coupling.

[0016] In some embodiments, a telescopic structure is further included, which includes a pressure block and a third elastic member. The pressure block is movably disposed on the photosensitive frame, and the third elastic member is disposed between the photosensitive frame and the pressure block. The pressure block can at least partially extend from the non-driving end of the processing box under the action of the third elastic member.

[0017] In some embodiments, when the processing box is installed in the electronic imaging device, the pressure block contacts the electronic imaging device and compresses the third elastic member. When the alignment structure is in the retracted position, when the third elastic member recovers its deformation, its force causes the processing box to move axially to the contact position.

[0018] In some embodiments, the alignment structure is a paddle disposed on the power receiving unit.

[0019] In some embodiments, the paddle is an arc-shaped sheet structure.

[0020] In some embodiments, the squaring structure is capable of axial movement relative to the process cartridge.

[0021] In some embodiments, the straightening structure comprises a curved rod.

[0022] In some embodiments, during the process of installing the processing box to the electronic imaging device, the curved portion of the alignment structure is located at the upper end area of ​​the drive coupling and contacts the drive coupling to press down and align the drive coupling.

[0023] In some embodiments, a fourth elastic member is provided between the alignment structure and the photosensitive frame, and when the processing box moves axially in a direction close to the driving coupling, the alignment structure abuts against the electronic imaging device and the fourth elastic member is compressed.

[0024] In some embodiments, the telescopic structure also includes a first elastic member and a connecting member, one end of the first elastic member abuts against the non-driving end of the photosensitive drum, and the other end abuts against the connecting member, the connecting member is movably arranged at the non-driving end of the photosensitive drum, and under the action of the first elastic member, the connecting member can be at least partially exposed outside the non-driving end of the processing box.

[0025] In some embodiments, a first sleeve is provided at the driving end of the photosensitive drum, and the power receiving unit is sleeved in the first sleeve and can move axially relative to the first sleeve.

[0026] In some embodiments, one of the first sleeve and the power receiving unit is provided with a snap-fitting groove, and the other is provided with a protrusion that cooperates with the snap-fitting groove, so that when the power receiving member receives the driving force and rotates, the photosensitive drum can be driven to rotate through the cooperation between the protrusion and the snap-fitting groove.

[0027] In some embodiments, a telescopic structure is further included, wherein the telescopic structure enables the power receiving unit to be telescopic in the axial direction.

[0028] In some embodiments, the telescopic structure includes a shaft portion, an abutment column, a first protrusion, and a first elastic member;

[0029] The shaft portion is disposed through the photosensitive drum, the driving end of the shaft portion is connected to the power receiving unit, and the non-driving end of the shaft portion is connected to the abutment column;

[0030] The abutment column comprises a first abutment surface and a second abutment surface, wherein the first abutment surface is a surface facing the driving end, and the second abutment surface is a surface facing the non-driving end;

[0031] The non-driving end of the photosensitive drum has a third abutting surface inside, and the third abutting surface is closer to the driving end than the second abutting surface;

[0032] Two ends of the first elastic member abut against the first abutting surface and the third abutting surface respectively;

[0033] The first protrusion is arranged on the second abutting surface and is partially exposed outside the non-driving end of the processing box.

[0034] In some embodiments, the process cartridge is provided with a driving end pressing portion and a non-driving end pressing portion, and in a direction intersecting the axial direction, the driving end pressing portion is higher than the non-driving end pressing portion;

[0035] During the installation of the processing cartridge, the electronic imaging device first presses the driving end pressing portion to press the alignment structure downward and align the driving coupling;

[0036] The electronic imaging device then presses the non-driving end pressing portion, causing the first protrusion to abut against and be pushed by the electronic imaging device, so that the abutment column and the shaft move toward the driving side of the electronic imaging device, thereby driving the power receiving unit to move toward the driving side to a position engaged with the drive coupling.

[0037] Beneficial effects of the present invention: The driving end of the processing box of the present invention is provided with an alignment structure to align the driving coupling, so that the axis of the driving coupling is parallel (coaxial) before the engagement with the power receiving unit, so that the power receiving unit can be smoothly and quickly engaged with the driving coupling, and can ensure that the power receiving unit and the driving unit of the electronic imaging device are stably engaged to transmit the driving force. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A three-dimensional diagram of a processing box installed on an electronic imaging device in a first embodiment of the present invention at a certain angle;

[0039] Figure 2 It is a three-dimensional diagram from another angle when the process box in the first embodiment of the present invention is installed on the electronic imaging device;

[0040] Figure 3is a three-dimensional diagram of the driving side of the electronic imaging device in an embodiment of the present invention;

[0041] Figure 4 A three-dimensional diagram of a process cartridge in a first embodiment of the present invention at one angle;

[0042] Figure 5 A three-dimensional diagram of the process cartridge in the first embodiment of the present invention from another angle;

[0043] Figure 6 is a three-dimensional diagram of a power receiving unit in Embodiment 1 of the present invention;

[0044] Figure 7 A partial cross-sectional view of a process cartridge according to Embodiment 1 of the present invention;

[0045] Figure 8 is a cross-sectional view of the limiting mechanism in the first embodiment of the present invention;

[0046] Fig. 9 A cross-sectional view of a power receiving unit and a driving coupling in a first embodiment of the present invention at a certain angle;

[0047] Fig.10 A cross-sectional view of another angle of engagement between the power receiving unit and the drive coupling in the first embodiment of the present invention;

[0048] Fig.11 The third embodiment of the present invention is a three-dimensional diagram of the process cartridge in the first embodiment of the present invention without the second drum end cover;

[0049] Fig.12 It is a three-dimensional diagram of the pressure rod in the first embodiment of the present invention;

[0050] Fig.13 It is a three-dimensional diagram of the process box installed on the electronic imaging device in the second embodiment of the present invention;

[0051] Fig.14 It is a three-dimensional diagram of a processing box in a second embodiment of the present invention at a certain angle;

[0052] Fig.15 is a three-dimensional diagram of the process box in the second embodiment of the present invention at another angle;

[0053] Fig.16 A three-dimensional diagram of a process cartridge installed on an electronic imaging device in a third embodiment of the present invention;

[0054] Fig.17 It is a three-dimensional diagram of a process box in Embodiment 3 of the present invention at one angle;

[0055] Fig.18 It is a partial cross-sectional view of the process cartridge in the third embodiment of the present invention;

[0056] Fig.19is a three-dimensional diagram of the process box in the third embodiment of the present invention at another angle;

[0057] Fig. 20 A partial cross-sectional view of a process cartridge installed on an electronic imaging device in a third embodiment of the present invention;

[0058] Fig.21 It is a partial stereoscopic diagram of the non-driving side of the electronic imaging device in the fourth embodiment of the present invention;

[0059] Fig. 22 A three-dimensional diagram of a process cartridge in a fourth embodiment of the present invention at one angle;

[0060] Fig.23 It is a partial stereoscopic view of the process cartridge driving end in the fourth embodiment of the present invention without the first developing end cover;

[0061] Fig.24 It is a partial three-dimensional diagram of the non-driving end of the process cartridge in the fourth embodiment of the present invention;

[0062] Fig.25 A cross-sectional view of a processing cartridge in a fourth embodiment of the present invention at one angle;

[0063] Fig.26 It is a partial three-dimensional diagram of the non-driving end of the process cartridge in the fourth embodiment of the present invention;

[0064] Fig. 27 A three-dimensional diagram of the process cartridge in the fourth embodiment of the present invention from another angle;

[0065] Fig.28 It is a stereoscopic diagram of the power receiving unit in the fourth embodiment of the present invention. DETAILED DESCRIPTION

[0066] The present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0067] It should be noted that the terms "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.

[0068] In the present invention, unless otherwise clearly specified and limited, 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 one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] In the present invention, unless otherwise clearly specified and limited, 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. Moreover, 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.

[0070] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0071] like Figures 1 to 3 As shown, in the current electronic imaging device, the electronic imaging device has a body 20 and a driving unit, the body 20 has a driving side and a non-driving side, and an installation area for installing a processing box A is formed between the driving side and the non-driving side, and the processing box A is detachably installed on the installation area of ​​the body 20. Specifically, installation guide grooves 201 are provided on the driving side and the non-driving side of the body 20, and one or more installation positioning columns 80 are provided on the processing box A. The installation positioning columns 80 are respectively slidably matched with the two installation guide grooves 201. When the processing box A is placed in the electronic imaging device body 20, the door cover (not shown) of the electronic imaging device is in an open state. After the processing box A is slidably installed along the installation guide grooves 201 to the loading position of the processing box A, the door cover is closed, and the processing box A is pressed down to the working position of the processing box A, thereby completing the installation and positioning of the processing box.

[0072] To facilitate the description of the structure of the electronic imaging device and the processing box A, as shown in FIG. Figure 1 and Figure 2 A three-dimensional rectangular coordinate system is established as shown, and the direction where the driving side and the non-driving side of the fuselage 20 are located is the X-axis direction, wherein the -X-axis side represents the driving side, and the +X-axis side represents the non-driving side. The installation guide groove 201 extends obliquely relative to the Y-axis direction and the Z-axis direction, and the installation guide groove 201 has a starting end and an end. When the processing box A is installed, the installation positioning column 80 enters from the starting end of the installation guide groove 201 and moves toward the end. When the processing box 1 is in the working position, the installation positioning column 80 is at the end of the installation guide groove 201. The extension direction of the installation guide groove 201 is to extend obliquely from the -Y, -Z axis end (starting end) to the +Y, +Z axis end (end).

[0073] More specifically, if Figure 3 As shown, a driving end side cover 202 for supporting the driving unit is provided on the driving side (+X axis side) of the electronic imaging device, and a driving unit protective cover 204 is formed on the driving end side cover 202. The driving unit protective cover 204 is roughly a cylindrical member, which is hollow inside and can accommodate the driving unit. A socket 205 and an assembly hole 203 are formed on the driving unit protective cover 204. The assembly hole 203 is a circular hole opened on the axial end face of the driving unit protective cover 204. The socket 205 is a through hole formed on the circumferential surface of the driving unit protective cover 204. A plurality of sockets 205 may be provided, and the plurality of sockets 205 are arranged at intervals on the circumferential surface of the driving unit protective cover 204. The drive unit includes a rotatable drive coupling 10, which is a roughly cylindrical structure. The +X-axis end face of the drive coupling 10 is provided with a meshing portion 103, which is a cylindrical protrusion protruding from the end face, and a connecting groove 101 is recessed on the +X-axis end face of the meshing portion 103. A first gear 102 is also provided on the circumferential surface of the drive coupling 10, and the first gear 102 is located on the -X-axis side of the meshing portion 103. The drive coupling 10 is penetrated by an assembly hole 203 and can rotate in the assembly hole 203, the meshing portion 103 and the connecting groove 101 can be exposed through the assembly hole 203, and a part of the first gear 102 can be exposed through the insertion hole 205.

[0074] Furthermore, a top block (not shown) is provided on the driving side of the body 20, which has a pushing effect on the drive coupling 10. Under the action of the top block, the axial direction of the drive coupling 10 is inclined relative to the X-axis direction in the initial state, and when the drive coupling 10 is in a working state (when transmitting driving force to the processing box A), the axial direction of the drive coupling 10 is parallel to the X-axis direction.

[0075] Embodiment 1:

[0076] like Figure 4 and Figure 5 As shown, this embodiment provides a processing box A, which is detachably mounted on the mounting area of ​​the electronic imaging device body 20. When the processing box A is mounted in the electronic imaging device, the coordinate system of the processing box A is consistent with the coordinate system of the electronic imaging device. The processing box A is roughly in the shape of a rectangular box, the X-axis direction also represents the length direction of the processing box A, the Y-axis direction also represents the height direction of the processing box A, and the Z-axis direction also represents the width direction of the processing box A. Among them, the processing box A includes a driving end and a non-driving end in the length direction, and the driving end and the non-driving end correspond to the driving side and the non-driving side of the electronic imaging device, respectively.

[0077] like Figure 4 and Figure 5 As shown, the processing box A cooperates with the driving coupling 10 to receive the rotational driving force output by the driving coupling 10 of the electronic imaging device, wherein the processing box A includes a developing unit 40, a photosensitive unit 50 and a squaring structure 60.

[0078] like Figure 4 and Figure 5 As shown, the developing unit 40 includes a developing frame, a developing roller, a stirring frame and a powder discharge knife. The developing frame surrounds a powder bin for storing toner. The developing frame is roughly in the shape of a long box. The length direction of the developing frame is the X-axis direction. The developing roller 41 is rotatably supported on the developing frame. The axial direction of the developing roller 41 is along the X-axis direction. The stirring frame is rotatably supported in the powder bin. The axial direction of the stirring frame is along the X-axis direction. The toner in the powder bin is stirred by the stirring frame to prevent the toner from agglomerating. At the same time, the toner can also be transported toward the developing roller 41 to be adsorbed by the charged developing roller 41. The powder discharge knife is installed on the developing frame, and at least part of it is in linear contact with the surface of the developing roller 41, so as to control the layer thickness of the toner on the developing roller 41. The driving end (-X axis end) of the developing roller 41 is provided with a first developing gear 401, the non-driving end (+X axis end) of the developing roller 41 is provided with a second developing gear 402, and the driving end of the stirring frame is provided with a stirring gear, which is directly meshed with the first developing gear 401, or is indirectly meshed with the first developing gear 401 through a plurality of idler gears. A first developing end cover 100 is also installed on the outside of the driving end of the developing frame, and a second developing end cover 120 is installed on the outside of the non-driving end of the developing frame. The developing end cover covers each gear inside, which can protect the gears.

[0079] like Figure 4 and Figure 5As shown, the photosensitive unit 50 includes a photosensitive frame, a drum unit, a charging roller, and a cleaning blade, wherein the drum unit includes a photosensitive drum 51 and a power receiving unit 30, the photosensitive frame encloses a waste toner bin for collecting waste toner, the photosensitive frame also has a length direction, and its length direction is along the X-axis direction, and the photosensitive frame is provided with end covers at both ends in the length direction, which are a first drum end cover 90 fixedly provided at the driving end of the photosensitive frame and a second drum end cover 110 fixedly provided at the non-driving end of the photosensitive frame. The drum unit is rotatably supported on the first drum end cover 90 and the second drum end cover 110, and the drum unit can move in the axial direction relative to the photosensitive frame, the axial direction of the photosensitive drum 51 is along the X-axis direction, and the photosensitive drum 51 is located at the +Y-axis end of the photosensitive unit 50. The toner adsorbed by the developing roller 41 is transferred to the photosensitive drum 51 through the potential difference between the developing roller 41 and the photosensitive drum 51, and the toner on the photosensitive drum 51 is transferred through the transfer belt of the electronic imaging device to form an image on the recording material (such as paper). After the transfer, the cleaning blade is in linear contact with the photosensitive drum 51 to clean the toner that has not been completely transferred on the surface of the photosensitive drum 51, that is, the waste toner, and the cleaned waste toner is stored in the waste toner bin. The charging roller is used to charge the surface of the photosensitive drum 51 with a uniform charge so that the photosensitive drum 51 can absorb the toner.

[0080] like Figures 4 to 7As shown, in this embodiment, the power receiving unit 30 is arranged at the driving end of the photosensitive drum 51. The power receiving unit 30 is roughly a cylindrical sleeve-shaped structure, which is sleeved on the driving end of the photosensitive drum 51 and fixedly connected to the photosensitive drum 51. The power receiving unit 30 and the photosensitive drum 51 can be a separate structure or an integrally formed structure. The power receiving unit 30 includes a first drum gear 31, a first annular groove 303 and an engaging protrusion 301. The first drum gear 31 is arranged on the circumferential surface of the power receiving unit 30. The first drum gear 31 is meshed with the first developing gear 401. The first annular groove 303 and the engaging protrusion 301 are arranged on the -X axis end face of the power receiving unit 30. The first annular groove 303 is formed by being recessed from the end face in the +X axis direction. A first driving mounting position 901 is provided on the first drum end cover 90. The first driving mounting position 901 The drum end cover 90 includes a through hole and a first flange 904 arranged around the through hole and matched with the first annular groove 303. When assembled, the first flange 904 is embedded in the first annular groove 303, so that the first drum end cover 90 can rotatably support the power receiving unit 30 and the photosensitive drum 51. There is a gap between the first flange 904 and the bottom of the first annular groove 303, that is, in the X-axis direction, the power receiving unit 30 and the photosensitive drum 51 (i.e., the drum unit) can move (axially move) relative to the first drum end cover 90. The engaging protrusion 301 is located on the inner side of the first annular groove 303, and the engaging protrusion 301 protrudes from the end surface of the power receiving unit 30. The engaging protrusion 301 has a shape that matches the connecting groove 101. The engaging protrusion 301 matches the connecting groove 101 to make the power receiving unit 30 mesh with the drive coupling 10, thereby receiving the driving force. The shape of the connecting groove 101 can be set to be triangular, and the shape of the engaging protrusion 301 is adapted to the shape of the connecting groove 101, thereby improving the connection stability between the engaging protrusion 301 and the connecting groove 101. The power receiving unit 30 can move in the axial direction, and the engaging protrusion 301 at least partially extends from the first driving installation position 901 to facilitate engagement with the connecting groove 101.

[0081] like Figure 4 and Figure 6 As shown, in this embodiment, an open groove 302 is provided on the coupling protrusion 301. When the coupling protrusion 301 is assembled with the connecting groove 101, the open groove 302 in the coupling protrusion 301 is placed in the connecting groove 101 to easily form a negative pressure, thereby fixing the coupling protrusion 301 in the connecting groove 101 and facilitating the meshing connection between the power receiving unit 30 and the driving coupling 10.

[0082] like Figure 5 , Figure 7 and Fig.11As shown, in this embodiment, the non-driving end of the photosensitive drum 51 is further provided with a second sleeve 511, which can be separately provided with the photosensitive drum 51 and fixed at the non-driving end of the photosensitive drum 51, or can be integrally provided at the non-driving end of the photosensitive drum 51. A second drum gear 501 is provided on the circumferential surface of the second sleeve 511, and the second drum gear 501 is meshed with the second developing gear 402. A second annular groove 512 is recessed on the +X-axis end face of the second sleeve 511, a third annular groove 513 is provided at the center axis position of the second annular groove 512, a first non-driven mounting position 1101 is provided on the second drum end cover 110, the first non-driven mounting position 1101 includes a through hole and a second flange surrounding the through hole, the second flange protrudes from the end face of the second drum end cover 110, during assembly, the connecting piece 801 passes through the through hole and the third annular groove 513 in sequence, thereby forming a support for the photosensitive drum 51 by the second drum end cover 110, and the connecting piece 801 can be a pin. Furthermore, the connecting member 801 can also serve as a conductive member, that is, it is made of conductive material, and a portion of the connecting member 801 is exposed outside the second drum end cover 110 to contact the electrical output member of the electronic imaging device to achieve conductivity (the portion in contact with the electrical output member is also called a conductive electrode, and the circumferential surface of the conductive electrode is surrounded by the second flange). The third annular groove 513 and the second sleeve 511 are also made of conductive material. When the connecting member contacts the third annular groove 513, the received voltage can be transferred to the second sleeve 511, and then transferred to the photosensitive drum 51.

[0083] After the power receiving unit 30 is successfully engaged with the drive coupling 10 (the axis of the power receiving unit 30 coincides with the axis of the drive coupling 10, that is, the two are coaxial), the power receiving unit 30 receives the driving force to rotate, drives the photosensitive drum 51 to rotate, and transmits the driving force to the first developing gear 401 meshed with the first drum gear 31, and the second developing gear 402 meshed with the second drum gear 501, so that the developing roller 41 rotates, and the first developing gear 401 also transmits the driving force to the stirring gear directly or indirectly meshed with it, so that the stirring frame rotates, so that the entire processing box can perform the development work normally. However, since the drive coupling 10 is in a state where the axis is inclined with the X-axis direction in the initial state, that is, it does not coincide with the axis of the power receiving unit 30, it is difficult or impossible for the two to accurately mesh with each other and transmit the driving force. Therefore, it is necessary to align the axis of the drive coupling 10 (coaxial with the power receiving unit 30) before the two are engaged. Based on this, the processing box is also provided with a aligning structure 60 for aligning the drive coupling 10.

[0084] like Figure 4 , Figures 8 to 10As shown, in this embodiment, the alignment structure 60 is arranged on the power receiving unit 30, and the alignment structure 60 is a paddle, which is arranged on the -X axis end face of the power receiving unit 30 and protrudes from the end face along the -X axis direction. The paddle protrudes more from the end face of the power receiving unit 30 than the engaging protrusion 301. The paddle is arranged close to the inner edge of the first annular groove. The paddle is an arc-shaped sheet structure, having an arc that matches the circumferential surface of the assembly hole 203 and the meshing portion 103. The paddle can extend from the first drive mounting position 901 to the assembly hole along the -X axis direction. 203, and can be attached to the inner circumference of the assembly hole 203. When the paddle rotates with the power receiving unit 30, the paddle rotates to contact the circumference of the meshing portion 103 of the drive coupling 10, and rotates and paddles the meshing portion 103, so that the entire drive coupling 10 swings until its axis coincides with the axis of the power receiving unit 30. When the drive coupling 10 is aligned, the paddle is located between the inner circumference of the assembly hole 203 and the outer circumference of the meshing portion 103, and because the arcs of the three are adapted, the paddle will not affect the rotation of the drive coupling 10. The alignment structure 60 can be integrally formed with the power receiving unit 30, or can be separately provided.

[0085] Furthermore, the alignment structure 60 needs to extend out of the first drive mounting position 901 to contact the drive coupling 10 to align the drive coupling 10, and the engaging protrusion 301 also needs to extend out of the first drive mounting position 901 to engage with the meshing portion 103. When the alignment structure 60 and the engaging protrusion 301 are extended, they may interfere with components of the electronic imaging device, causing a jam in the installation or removal of the processing box. Based on this, the alignment structure 60 is configured to be axially movable between the contact position and the retracted position. Since the axial movement of the alignment structure 60 (paddle), the power receiving unit 30, and the photosensitive drum 51 is synchronous, that is, the power receiving unit 30 and the photosensitive drum 51 also move axially between the contact position and the retracted position, that is, the entire drum unit moves axially between the contact position and the retracted position relative to the processing box, the alignment structure 60 moves along the -X axis direction to the contact position, can contact the drive coupling 10 and paddle the drive coupling 10; the alignment structure 60 moves along the +X axis direction to the retracted position, and the alignment structure 60 is out of contact with the drive coupling 10.

[0086] Furthermore, Figure 4 , Figure 7 and Figure 8As shown, the processing box also includes a telescopic structure for controlling the movement of the alignment structure 60 in the axial direction, that is, controlling the movement of the alignment structure 60 between the contact position and the retracted position. Specifically, the telescopic structure includes a first elastic member 802 and a limiting mechanism, wherein the first elastic member 802 is constructed to be able to apply a force to the photosensitive drum 51 to move it to the contact position. Specifically, the first elastic member 802 is arranged at the non-driving end of the photosensitive drum, the first elastic member 802 is arranged in the second sleeve 511, and is accommodated in the second annular groove 512, one end of the first elastic member 802 abuts against the bottom of the second annular groove 512, and the other end abuts against the inner side (-X axis side) of the second drum end cover 110. The first elastic member 802 is constructed to be in a compressed state when the photosensitive drum 51 is in the retracted position, and has a force to move the photosensitive drum 51 along the -X axis direction. In this embodiment, the first elastic member 802 adopts a compression spring, and can also adopt components such as a tension spring, a torsion spring, a spring sheet, an elastic rubber, and an elastic sponge.

[0087] like Figure 4 and Figure 8 As shown, the limiting mechanism is constructed to move the photosensitive drum 51 and the power receiving unit 30 to the retracted position and maintain them in the retracted position. The limiting mechanism is arranged at the driving end of the processing box. The limiting mechanism includes a pressure rod 701 and a second elastic member 702. The pressure rod 701 is movably arranged on the first drum end cover 90. The moving direction of the pressure rod 701 intersects with the length direction (X-axis direction). In this embodiment, the moving direction of the pressure rod 701 is along the Y-axis direction. Specifically, the first drum end cover 90 is provided with a first slide groove 903 extending along the Y-axis direction. The pressure rod 701 is a long rod, which is at least partially embedded in the first slide groove 903 and can move in the first slide groove 903. One end (+Y-axis end) of the first slide groove 903 is connected to the first driving mounting position 901, so that the pressure rod 701 in the first slide groove 903 can at least partially slide into the area of ​​the first driving mounting position 901, thereby affecting the power receiving unit 30. Specifically, the first drum end cover 90 is provided with an avoidance hole 902 connecting the first slide groove 903 and the first drive installation position 901 , and at least a portion of the pressure rod 701 passes through the avoidance hole 902 and contacts the power receiving unit 30 in the first drive installation position 901 .

[0088] Further, such as Fig.12As shown, a first abutting top portion 703 and a second abutting top portion 704 are provided on one end (+Y axis end) of the pressure rod 701. The first abutting top portion 703 and the second abutting top portion 704 are on different sides of the pressure rod 701 in the X axis direction. The first abutting top portion 703 is located on the +X axis side for contacting the power receiving unit 30, and the second abutting top portion 704 is located on the -X axis side for contacting the drive end side cover 202. An inclined surface 705, a lower edge 706 and an upper edge 707 are provided on the first abutting top portion 703 of the pressure rod 701. The lower edge 706, the inclined surface 705 and the upper edge 707 are sequentially provided in the +Y axis direction. The inclined surface 705 faces the power receiving unit 30, the upper edge 707 is located on the +Y and -X axis sides, and the lower edge 706 is located on the -Y and +X axis sides. The inclined surface 705 is arranged in such a way that it can contact the power receiving unit 30 and push the power receiving unit 30 to move to the retracted position along the +X axis direction during the movement of the pressure rod 701 along the +Y axis direction. When the second abutting top portion 704 of the pressure rod 701 contacts the drive end side cover 202 and is pushed to move along the -Y axis direction, the first abutting top portion 703 of the pressure rod 701 gradually moves away from the first drive mounting position 901, so that the inclined surface 705 is out of contact with the power receiving unit 30, that is, the restrictive effect of the pressure rod 701 on the power receiving unit 30 disappears, and the power receiving unit 30 can move to the contact position along the -X axis direction under the action of the first elastic member 802.

[0089] like Figure 4 As shown, the second elastic member 702 is constructed to provide the pressure rod 701 with a force to move it in the direction of the first drive mounting position 901. Specifically, the second elastic member 702 is arranged in the first slide groove 903, and one end thereof abuts against the pressure rod 701. When the pressure rod 701 moves in the direction away from the first drive mounting position 901 (the second abutting top portion 704 interferes with the drive end side cover 202 and is pushed to move), the second elastic member 702 is compressed, so that it has a force to move the pressure rod 701 in the direction close to the first drive mounting position 901 (in the +Y axis direction in this embodiment). When the pushing effect of the drive end side cover 202 on the pressure rod 701 disappears, the force of the deformation recovery of the second elastic member 702 causes the pressure rod 701 to move in the direction close to the first drive mounting position 901 (+Y axis direction), and pushes the power receiving unit 30 through the inclined surface 705, so that the power receiving unit 30 moves along the +X axis direction to the retracted position. Thereafter, in the absence of external force, a part of the pressure rod 701 is always pressed against the -X axis side of the power receiving unit 30 under the action of the second elastic member 702, and the power receiving unit 30 cannot move along the -X axis direction, thereby remaining in the retracted position.

[0090] Preferably, the second elastic member 702 is a compression spring, and the other end (-Y axis end) of the pressure rod 701 and the end of the first slide slot 903 are both provided with a protrusion for connecting the compression spring. Optionally, the second elastic member 702 can also be a tension spring, a torsion spring, a spring sheet, an elastic rubber, an elastic sponge, and the like.

[0091] like Figures 1 to 12 As shown, the processing box is in an initial state when it is not installed in the electronic imaging device. At this time, the limiting mechanism is in a state where the power receiving unit 30 is in a retracted position, and the alignment structure 60 and the engaging protrusion 301 do not protrude from or only partially protrude from the first driving installation position 901. During the process of installing the processing box into the electronic imaging device along the installation guide groove 201, the alignment structure 60 and the engaging protrusion 301 will not interfere with the internal structure of the electronic imaging device, and the processing box can be smoothly installed in the electronic imaging device. When the door cover of the electronic imaging device is closed, the processing box is pressed down to move. In the process of moving to the working position, the second abutting top portion 704 of the pressure rod 701 contacts and is pushed by the driving end side cover 202, so that the entire pressure rod 701 compresses the second elastic member 702 and moves in the direction away from the first driving mounting position 901, and the pressure rod 701 is disengaged from the power receiving unit 30, and the restriction on the power receiving unit 30 is released. The force of the first elastic member 802 at the non-driving end recovers from the deformation and pushes the photosensitive drum 51 and the power receiving unit 30 to move to the contact position along the -X axis direction, and the swing structure (paddle) is inserted into the assembly hole 20 3, the first gear 102 of the driving coupling 10 meshes with the first developing gear 401 at the driving end of the developing roller 41 and transmits the driving force thereto. After the developing roller 41 rotates, the first developing gear 401 and the first drum gear 31, the second developing gear 402 and the second drum gear 501 are meshed to drive the photosensitive drum 51 to rotate, and the power receiving unit 30 rotates together with it, driving the aligning structure 60 to rotate. During the rotation of the aligning structure 60 in the assembly hole 203, it contacts the circumferential surface of the meshing portion 103 of the driving coupling 10, and rotates. Turn and simultaneously move the meshing part 103 to make the entire drive coupling 10 swing until its axis coincides with the axis of the power receiving unit 30. After the drive coupling 10 is straightened, the photosensitive drum 51 and the drive receiving unit 30 continue to move in the -X axis direction under the action of the first elastic member 802, and the engaging protrusion 301 of the drive receiving unit 30 is embedded in the connecting groove 101 of the drive coupling 10 to complete the transmission connection between the two. Subsequently, the driving force of the drive coupling 10 is transmitted to the photosensitive drum 51, and then the driving force is transmitted by the meshing relationship between the photosensitive drum 51 and other gears.

[0092] It should be noted that, in the process of engagement between the power receiving unit 30 and the drive coupling 10, although the meshing of the first gear 102 and the first developing gear 401 can receive a certain driving force to drive the developing roller 41, the photosensitive drum 51, etc. to rotate, it is not enough to transmit the driving force to the photosensitive drum 51 through the first developing gear 401 to complete the developing operation. Since the axis of the drive coupling 10 has not been aligned at this time, the driving force transmission process is unstable, which has a greater impact on the printing (developing) quality. Therefore, the process of receiving the driving force through the first developing gear 401 is only used to prepare for the subsequent engagement and transmission of the driving force between the power receiving unit 30 and the drive coupling 10 (that is, the first developing gear 401 transmits the driving force to the power receiving unit 30 through the first drum gear 31, so that the paddle can rotate to align the drive coupling 10). When the alignment structure 60 contacts the drive coupling 10, as the power receiving unit 30 rotates, the alignment structure 60 can align the drive coupling 10, and the power receiving unit 30 and the drive coupling 10 are effectively engaged and connected. The non-driving end of the developing roller 41 is meshedly connected with the non-driving end of the photosensitive drum 51, and the driving unit is meshedly connected with the power receiving unit 30 through the driving coupling 10 to transmit the power to the photosensitive drum 51, so that the photosensitive drum 51 drives the developing roller 41 to rotate, thereby realizing the driving force transmission of the developing unit 40.

[0093] When it is necessary to remove the processing box from the electronic imaging device, the door cover of the electronic imaging device is opened, and the pressing effect on the processing box disappears, and the pushing force of the drive end side cover 202 on the pressure rod 701 disappears. The force of the second elastic member 702 recovering from deformation can make the pressure rod 701 move toward the direction close to the first drive mounting position 901. During the movement of the pressure rod 701, the inclined surface 705 contacts the power receiving unit 30 and gradually pushes the power receiving unit 30 to overcome the force of the first elastic member 802 and move in the +X axis direction to the retracted position, and keep the power receiving unit 30 in the retracted position. Thereafter, when the user pulls the processing box out of the electronic imaging device, the alignment structure 60 will not interfere with the components in the electronic imaging device and can be removed smoothly. Thereafter, the alignment structure 60 and the power receiving unit 30 of the processing box are kept in the retracted position under the limiting action of the pressure rod 701, waiting for the next installation.

[0094] Embodiment 2:

[0095] The structure of the processing box in this embodiment is substantially the same as that of the first embodiment, and the main difference is that the telescopic structure is different.

[0096] like Figures 13 to 15As shown, in this embodiment, the processing box is detachably installed on the installation area of ​​the body 20, and the processing box can move axially (move in the X-axis direction) within the installation area, that is, move between the driving side and the non-driving side of the electronic imaging device. The alignment structure 60 is the same as that in the first embodiment, and is a paddle arranged on the power receiving unit 30. As the processing box moves in the axial direction, the alignment structure 60 on the power receiving unit 30 can move between the contact position and the retracted position, but the alignment structure 60 is relatively stationary with the processing box, that is, the drum unit cannot move axially relative to the processing box.

[0097] The telescopic structure of this embodiment is configured to enable the entire processing box to move axially, thereby allowing the alignment structure 60 to extend out of the assembly hole 203 to align the drive coupling 10. The telescopic structure includes a pressing block 1401 and a third elastic member 1402.

[0098] Specifically, the telescopic structure is arranged on the photosensitive unit 50, and a second slide groove 52 extending along the length direction (X-axis direction) is opened at a position of the photosensitive frame near the non-driving end. The +X-axis end of the second slide groove 52 passes through the second drum end cover 110 (a through hole (not shown) is provided on the second drum end cover 110 to connect to the second slide groove 52), and the pressure block 1401 is slidably arranged in the second slide groove 52, and a part of it can extend out of the second drum end cover 110 through the through hole. The third elastic member 1402 is arranged in the second slide groove 52, and one end thereof abuts against the -X-axis end of the second slide groove 52, and the other end abuts against the pressure block 1401. The third elastic member 1402 is constructed to make the pressure block 1401 in a state of extending out of the non-driving end, and when the pressure block 1401 is moved in the -X-axis direction by an external force, the third elastic member 1402 is compressed. The third elastic member 1402 is preferably a compression spring, and the -X axis end of the pressing block 1401 and the end of the second slide slot 52 are both provided with a convex column for the compression spring to connect. Optionally, the third elastic member 1402 can also be a tension spring, a torsion spring, a spring sheet, an elastic rubber, an elastic sponge, and other components.

[0099] In this embodiment, when the processing box is installed in the installation area, there is a gap between the driving end and / or the non-driving end of the processing box and the inner wall of the driving side and / or the inner wall of the non-driving side of the body 20. This arrangement can facilitate the installation and disassembly of the processing box.

[0100] In the initial state before the processing box is installed, the pressure block 1401 partially extends out of the second drum end cover 110. During the installation process, the processing box is first moved toward the non-driving side so that the pressure block 1401 abuts against the inner wall of the non-driving side of the fuselage 20. The processing box and the pressure block 1401 move relative to each other (the pressure block 1401 retracts relative to the processing box in the +X axis direction) to compress the third elastic member 1402. At this time, the alignment structure 60 is in the retracted position, and the alignment structure 60 does not contact the drive coupling 10. After the processing box is installed in place, the processing box is released, and the third elastic member 1402 is deformed and restored. Since the pressure block 1401 abuts against the inner wall of the non-driving side, the third elastic member 1402 is compressed. The third elastic member 1402 is not movable, and the force of deformation recovery provides the processing box with a force to move toward the driving side direction (-X axis direction) of the electronic imaging device, so that the processing box moves to the contact position in the -X axis direction, so that the alignment structure 60 (paddle) can smoothly enter the assembly hole 203, and the power receiving unit 30 drives the alignment structure 60 to rotate to align the drive coupling 10. After the drive coupling 10 is aligned, the engaging protrusion 301 on the power receiving unit 30 is assembled with the connecting groove 101 on the drive coupling 10, so that the power receiving unit 30 is meshed and connected with the drive coupling 10 to realize the reception and transmission of the driving force.

[0101] When the processing box is taken out from the body 20, the processing box is pulled toward the non-driving side of the electronic imaging device (+X axis direction), the structure 60 is straightened out of the assembly hole 203, the third elastic member 1402 is compressed again, and then the processing box is pulled out along the installation guide groove 201, the pressure block 1401 is disengaged from the inner wall of the non-driving end of the electronic imaging device, and the third elastic member 1402 is reset to drive the pressure block 1401 to move and reset (extend along the -X axis direction). At this point, the processing box returns to its initial state to wait for the next installation.

[0102] In some other embodiments, the pressure block 1401 can also be set in the electronic imaging device, as long as it can play a role in forcing the processing box to move toward the driving coupling 10 of the electronic imaging device. For example, the pressure block 1401 can be installed on the inner wall of the body 20 at the non-driving end through the third elastic member 1402, and the pressure block 1401 can abut against the surface of the non-driving end of the processing box.

[0103] Embodiment three:

[0104] The processing box of this embodiment is substantially the same as that of the second embodiment, with the main differences being that the alignment structure in this embodiment is different and the telescopic structure further includes a connecting member.

[0105] like Figures 16 to 20As shown, in this embodiment, the alignment structure 60a is a rod with a part having an arc, and the alignment structure 60a is arranged on the first drum end cover 90. The length direction of the alignment structure 60a extends along the Y direction, and the +Y axis end of the alignment structure 60a is an arc segment. The alignment structure 60a is movably arranged on the first drum end cover 90. Specifically, the alignment structure 60a is slidably arranged on the first drum end cover 90 along the X axis direction. The first drum end cover 90 is provided with a support shaft extending along the X axis direction. The alignment structure 60a is sleeved on the support shaft 180 and can move along the support shaft 180. Further, the support shaft 180 is provided with a fourth elastic member 190, one end of the fourth elastic member 190 abuts against the end surface of the first drum end cover 90, and the other end abuts against the alignment structure 60a. The fourth elastic member 190 is constructed to make the alignment structure 60a at a position away from the end surface of the first end cover 90. The fourth elastic member 190 is preferably a compression spring.

[0106] like Fig.17 and Fig.18 As shown, in this embodiment, the telescopic structure includes the pressing block 1401 and the third elastic member 1402 as in the second embodiment, and also includes the first elastic member 802 and the connecting member 801. Different from the first embodiment, the connecting member 801 is exposed to the outside (exposed outside the non-driving end) through the through hole of the second drum end cover 110, and can abut against the inner wall of the non-driving side of the fuselage 20. One end of the first elastic member 802 abuts against the connecting member 801, and the other end abuts against the bottom of the second annular groove 512 of the second sleeve 511 at the non-driving end of the photosensitive drum 51, so that when the connecting member 801 is subjected to external force, it can move relative to the photosensitive drum 51 and the entire processing box, and compress the first elastic member 802. In this embodiment, in the initial state, the connecting member 801 protrudes more from the end surface of the second drum end cover 110 than the pressing block 1401. Optionally, the pressing block 1401 can be more protruding than the connecting member 801, or the two are flush.

[0107] like Figures 16 to 20As shown, the driving side of the electronic imaging device has a first surface 206 and a second surface 207 arranged opposite to each other in the X-axis direction, and the first surface 206 is located on the +X-axis side of the second surface 207, that is, the second surface 207 is farther away from the non-driving side. During the process of installing the processing box into the electronic imaging device along the installation guide groove 201, the non-driving end of the processing box can be fitted against the inner wall of the non-driving side of the electronic imaging device, so that the connecting member 801 and the pressure block 1401 move relative to the processing box and compress the first elastic member 802 and the third elastic member 1402; at the same time, the alignment structure 60a enters the accommodating space formed by the first surface 206 and the second surface 207, and the alignment structure 60a can be fitted with the first surface 206, or with the second surface 207, or can be located between the two surfaces and not fit together. The arc section of the alignment structure 60a can enter the upper end area (-Z axis side, +Y axis side area) of the drive coupling 10 through the socket 205 on the drive unit cover 201 and contact the drive coupling 10 to press down and align the drive coupling 10. After the processing box is installed in place, the processing box is released, and the first elastic member 802 and the third elastic member 1402 are deformed and restored. The generated force drives the processing box to move toward the driving side of the electronic imaging device (movement in the -X axis direction), and the engaging protrusion 301 of the power receiving unit 30 engages with the connecting groove 101 of the driving coupling 10, thereby receiving and transmitting the driving force. In the process of the processing box moving along the -X axis direction as a whole, if the alignment structure 60a is in a position that is in contact with the first surface 206 or between the two surfaces, it will move a certain distance along the -X axis direction with the processing box until the alignment structure 60a abuts against the second surface 207. After the alignment structure 60a abuts against the second surface 207, the alignment structure 60a no longer moves with the processing box, and the processing box continues to move along the -X axis direction relative to the alignment structure 60a and compresses the fourth elastic member 190; if the alignment structure 60a is in a position that abuts against the second surface 207, the alignment structure 60a does not follow the processing box to move along the -X axis direction throughout the process. The second surface 207 can limit the position of the alignment structure 60a, ensuring that the alignment structure 60a can always be in a position to contact the drive coupling 10, so as to align the drive coupling 10 and ensure smooth engagement of the power receiving unit 10 with the drive coupling 10.

[0108] When the processing box is taken out from the body 20, the processing box is pulled toward the non-driving side of the electronic imaging device, so that the power receiving unit 30 is disengaged from the driving coupling 10, and the first elastic member 802 and the third elastic member 1402 are compressed again. The force of the processing box on the fourth elastic member 190 disappears, and the fourth elastic member 190 is deformed and restored. Then the processing box is pulled out along the installation guide groove 201, and the connecting member 801 and the pressing block 1401 are disengaged from the inner wall of the non-driving side of the electronic imaging device. The first elastic member 801 and the third elastic member 1402 are reset to drive the connecting member 801 and the pressing block 1401 to move and reset (extend along the -X axis direction). At this point, the processing box returns to its initial state to wait for the next installation.

[0109] Embodiment 4:

[0110] This embodiment provides another processing box, which has a different telescopic structure compared with the first embodiment, and a different alignment structure compared with the third embodiment.

[0111] like Fig.21 As shown, a second protrusion 21 protruding toward the driving side is formed on the inner wall of the non-driving side of the electronic imaging device, and can contact the first protrusion 70c on the processing box A.

[0112] like Fig. 22 , Fig.23 , Fig.25 and Fig.28 As shown, in this embodiment, the photosensitive unit 50 includes a photosensitive drum 51, a power receiving unit 30 and a telescopic structure. The driving end of the photosensitive drum 51 is provided with a first sleeve 502, and the first sleeve 502 is provided with a snap-fitting groove 503 to cooperate with the power receiving unit 30. The first sleeve 502 can be formed integrally with the photosensitive drum 51, or can be connected by snapping, gluing, etc. The power receiving unit 30 is sleeved in the first sleeve 502 of the photosensitive drum 51, and the power receiving unit 30 is provided with a protrusion 32 that can be snapped with the snap-fitting groove 503 on the first sleeve 502, so that the power receiving unit 30 can only move along the axis of the photosensitive drum 51, but cannot generate relative rotation with the photosensitive drum 51, that is, to ensure that the driving force received by the power receiving unit 30 from the electronic imaging device is stably transmitted to the photosensitive drum 51. The number of the protrusion 32 and the engaging groove 503 is one or more, and three are used in this embodiment. The three protrusions 32 are spaced apart on the power receiving unit 30 along the circumferential direction, and the number and position of the engaging groove 503 are adapted to the protrusion 32. Optionally, the protrusion can also be provided on the first sleeve 502, and the engaging groove for engaging and matching can be provided on the power receiving unit 30.

[0113] like Fig.25As shown, in this embodiment, the photosensitive unit 50 includes a telescopically arranged power receiving unit 30, and the power receiving unit 30 is axially extended and retracted in the first driving installation position 901 by setting a telescopic structure. The telescopic structure includes a shaft portion 70a, an abutment column, a first protrusion 70c and a first elastic member 802. Specifically, a shaft portion 70a is provided in the photosensitive drum 51 of the photosensitive unit 50, which passes through the driving end and the non-driving end of the photosensitive drum 51 along the axial direction of the photosensitive drum 51, and the non-driving end of the shaft portion 70a extends into the second sleeve 511. Along the axial direction of the photosensitive drum 51 (X-axis direction), an abutment column is provided at the non-driving end (+X-axis end) of the shaft portion 70a, and the abutment column is located in the second sleeve 511, wherein the abutment column has a first abutment surface 70b1 and a second abutment surface 70b2, wherein the first abutment surface 70b1 is a surface of the abutment column close to the driving end along the axial direction of the photosensitive drum 51 (the surface on the -X-axis side), and the second abutment surface 70b2 is a surface close to the non-driving end (the surface on the +X-axis side), and preferably, the diameter of the abutment column is larger than the diameter of the shaft portion 70a. The driving end of the shaft portion 70a is arranged to pass through the first sleeve 502 and connect with the power receiving unit 30, and can rotate with the power receiving unit 30; a third abutting surface 51b (i.e., the bottom of the second annular groove in the second sleeve 511) is arranged inside the photosensitive drum 51, and the third abutting surface 51b is closer to the driving end than the first abutting surface 70b1, and one end of the first elastic member 802 abuts against the first abutting surface 70b1, and the other end abuts against the third abutting surface 51b; the first protrusion 70c is arranged on the non-driving side of the processing box A, specifically, the first protrusion 70c abuts against the second abutting surface 70b2, and the second drum end cover 110 is provided with a through hole 110a, so that the first protrusion 70c can be exposed outside the second drum end cover 110 through the through hole 110a. In addition, the first protrusion 70c can also be formed integrally on the second abutting surface 70b2 of the abutting column.

[0114] like Fig.26 As shown, in this embodiment, the non-driving end of the photosensitive unit 50 is provided with a conductive structure, and the conductive structure includes a conductive electrode 803 and a conductive rod 804. Specifically, a conductive electrode 803 is provided at the non-driving end of the photosensitive drum 51, and the conductive electrode 803 is simultaneously exposed and provided on the second drum end cover 110 to achieve a conductive effect; a conductive rod 804 is provided coaxially with the shaft portion 70a on the second abutting surface 70b2 of the abutting column, and the conductive rod 804 can be accommodated in the conductive electrode 803 movably along the axial direction to transfer electricity to the photosensitive drum 51 through the conductive rod 804. Specifically, when the conductive rod 804 moves with the abutting column, the conductive rod 804 moves in the conductive electrode 803, but always maintains contact and conduction. It should be noted that the abutting column can be made of a conductive material, and the surface of the second abutting surface 70b2 can also be treated with a conductive coating to make it conductive.

[0115] like Fig. 22 and Fig.23 As shown, in this embodiment, the processing box A is further provided with a straightening structure 60b, which is a rod member with an arc arranged on the first drum end cover 90 and arranged on the outer part of the power receiving unit 30 (i.e., one side along the -X axis direction). Different from the third embodiment, the straightening structure 60b is arranged on the first drum end cover 90, and the straightening structure 60b is fixed to the first drum end cover 90, and can be fixedly connected by gluing, snapping, integral molding, etc. The straightening structure 60b can enter the upper end area of ​​the drive coupling 10 through the jack 205 on the drive unit cover 204, and press down and straighten the drive coupling 10.

[0116] like Fig. 27 As shown, in this embodiment, the processing box A needs to cooperate with the door cover to complete the installation. When the processing box A is placed in the installation area of ​​the electronic imaging device body 20, the positioning column 80 of the processing box A slides along the installation guide groove 201 to the loading position. A driving end pressing part 1 and a non-driving end pressing part 2 are provided at both ends of the length direction of the processing box A box body. When the electronic imaging device is in the closed door cover, the pressing structure (not shown) provided on the electronic imaging device presses the driving end pressing part 1 and the non-driving end pressing part 2. Specifically, the driving end pressing part 1 is provided as a protrusion protruding from the box body, the driving end pressing part 1 is provided at one end close to the driving side of the box body, and the non-driving end pressing part 2 is provided at one end close to the non-driving side of the box body. The pressing part is provided to press the processing box A down to the working position. In order to ensure the stability of the installation of the processing box A and avoid the problem that the power receiving unit 30 extends out in advance and causes interference, which leads to the inability to install the machine, preferably, along the Z-axis direction, the driving end pressing part 1 is provided. The height of the pressing portion 1 is higher than the non-driving end pressing portion 2, so that when the door cover is closed, the pressing structure on the electronic imaging device first presses the driving end pressing portion 1 of the driving end of the processing box A body, so that the alignment structure 60b first aligns the driving coupling 10, and the pressing structure then presses the non-driving end pressing portion 2 of the non-driving end of the processing box A body, so that the first protrusion 70c of the telescopic structure hits the second protrusion 21 of the electronic imaging device and is squeezed by it, and the first protrusion 70c transfers the pressure to the second abutment surface 70b2, and the shaft portion 70a drives the power receiving unit 30 to move toward the driving side along the length direction of the processing box A to the engagement position of the drive coupling 10, that is, the power receiving unit 30 extends out in the first driving mounting position 901. At this time, the first elastic member 802 is compressed. When the processing box A is taken out of the electronic imaging device, under the action of the first elastic member 802, the power receiving unit 30 moves toward the non-driving side along the length direction of the processing box A to the retracted position, that is, the power receiving unit 30 retracts into the first driving mounting position 901.

[0117] The processing box of the present invention, by providing a telescopic structure and a straightening structure, enables the power receiving unit of the processing box to stably engage with the driving unit of the electronic imaging device to transmit the driving force, which is beneficial to avoid technical problems such as interference, jamming, and inability to transmit driving force caused by inadequate driving connection.

[0118] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A process cartridge, detachably mounted in an electronic imaging device, the electronic imaging device having a driving side and a non-driving side, the driving side being provided with a driving unit, the process cartridge cooperating with the driving unit to receive a driving force output by the driving unit, the driving unit being rotatably connected with a driving coupling, the process cartridge having opposite driving ends and non-driving ends in a length direction, the process cartridge comprising: A photosensitive unit, comprising a photosensitive frame and a drum unit rotatably supported on the photosensitive frame, wherein the drum unit comprises a photosensitive drum and a power receiving unit, wherein the axial direction of the photosensitive drum is parallel to the length direction, the power receiving unit is arranged at the driving end of the photosensitive drum, and the power receiving unit is used to engage with the driving coupling to receive the driving force; It is characterized by further comprising: The alignment structure is arranged at the driving end of the processing box, and the alignment structure can contact the driving coupling to align the driving coupling so that the axis of the driving coupling is parallel to the axis of the power receiving unit.

2. The process cartridge according to claim 1, wherein: The drum unit is axially movable relative to the process cartridge between a contact position in which the alignment structure is contactable with the drive coupling and a retracted position in which the alignment structure is out of contact with the drive coupling.

3. The process cartridge according to claim 2, wherein: Also included is a telescopic structure for moving the drum unit relative to the process cartridge between a contact position and a retracted position; The telescopic structure comprises a first elastic member and a limiting mechanism, wherein the first elastic member is configured to exert a force on the drum unit to move the drum unit to a contact position; The stop mechanism is configured to enable the drum unit to be moved to the retracted position and to be held in the retracted position.

4. The process cartridge according to claim 3, wherein: The limiting mechanism includes a pressure rod and a second elastic member. The pressure rod is movably arranged on the photosensitive frame. The moving direction of the pressure rod intersects with the axial direction of the drum unit. The second elastic member is arranged between the pressure rod and the photosensitive frame.

5. The process cartridge according to claim 4, wherein: The pressure rod is provided with an inclined surface. Under the action of the second elastic member, the pressure rod moves toward the direction close to the power receiving unit, contacts the power receiving unit through the inclined surface, and pushes the drum unit to move toward the retracted position.

6. The process cartridge according to claim 5, wherein: During the process of installing the processing box to the electronic imaging device, the pressure rod contacts and interferes with the electronic imaging device, causing the pressure rod to compress the second elastic member and move it away from the power receiving unit. The drum unit moves toward the contact position under the action of the first elastic member.

7. The process cartridge according to claim 2, wherein: The process box is movable in an axial direction within the electronic imaging device.

8. The process cartridge according to claim 7, wherein: The processing box moves axially to move the alignment structure between a contact position and a retracted position. When the alignment structure is in the contact position, it can contact the drive coupling. When the alignment structure is in the retracted position, it is out of contact with the drive coupling.

9. The process cartridge according to claim 7 or 8, characterized in that: It also includes a telescopic structure, which includes a pressure block and a third elastic member. The pressure block is movably arranged on the photosensitive frame, and the third elastic member is arranged between the photosensitive frame and the pressure block. The pressure block can at least partially extend from the non-driving end of the processing box under the action of the third elastic member.

10. The process cartridge according to claim 9, wherein: During the process of installing the processing box to the electronic imaging device, the pressure block contacts the electronic imaging device and compresses the third elastic member. When the alignment structure is in the retracted position, when the third elastic member recovers its deformation, its force causes the processing box to move axially to the contact position.

11. The process cartridge according to any one of claims 1 to 10, characterized in that: The alignment structure is a paddle arranged on the power receiving unit.

12. The process cartridge according to claim 10, wherein: The paddle is an arc-shaped sheet structure.

13. The process cartridge according to claim 9, wherein: The alignment structure is capable of axial movement relative to the process cartridge.

14. The process cartridge according to claim 1 or 9, characterized in that: The alignment structure comprises a rod with an arc.

15. The process cartridge according to claim 14, wherein: During the process of installing the processing box to the electronic imaging device, the curved portion of the alignment structure is located at the upper end area of ​​the drive coupling and contacts the drive coupling to press down and align the drive coupling.

16. The process cartridge according to claim 15, wherein: A fourth elastic member is provided between the alignment structure and the photosensitive frame. When the processing box moves axially in a direction close to the driving coupling, the alignment structure abuts against the electronic imaging device and the fourth elastic member is compressed.

17. The process cartridge according to claim 10 or 16, characterized in that: The telescopic structure also includes a first elastic member and a connecting member, one end of the first elastic member abuts against the non-driving end of the photosensitive drum, and the other end abuts against the connecting member, the connecting member is movably arranged at the non-driving end of the photosensitive drum, and under the action of the first elastic member, the connecting member can be at least partially exposed outside the non-driving end of the processing box.

18. The process cartridge according to claim 1 or 15, characterized in that: The driving end of the photosensitive drum is provided with a first sleeve, and the power receiving unit is sleeved in the first sleeve and can move axially relative to the first sleeve.

19. The process cartridge according to claim 18, wherein: One of the first sleeve and the power receiving unit is provided with a snap-fitting groove, and the other is provided with a protrusion that matches the snap-fitting groove, so that when the power receiving member receives the driving force and rotates, the photosensitive drum can be driven to rotate through the cooperation between the protrusion and the snap-fitting groove.

20. The process cartridge according to claim 19, wherein: It also includes a telescopic structure, which enables the power receiving unit to be telescopic in the axial direction.

21. The process cartridge according to claim 20, wherein: The telescopic structure includes a shaft portion, an abutment column, a first protrusion and a first elastic member; The shaft portion is disposed through the photosensitive drum, the driving end of the shaft portion is connected to the power receiving unit, and the non-driving end of the shaft portion is connected to the abutment column; The abutment column comprises a first abutment surface and a second abutment surface, wherein the first abutment surface is a surface facing the driving end, and the second abutment surface is a surface facing the non-driving end; The non-driving end of the photosensitive drum has a third abutting surface inside, and the third abutting surface is closer to the driving end than the second abutting surface; Two ends of the first elastic member abut against the first abutting surface and the third abutting surface respectively; The first protrusion is arranged on the second abutting surface and is partially exposed outside the non-driving end of the processing box.

22. The process cartridge according to claim 21, wherein: The processing box is provided with a driving end pressing portion and a non-driving end pressing portion, and in a direction intersecting with the axial direction, the driving end pressing portion is higher than the non-driving end pressing portion; During the installation of the processing cartridge, the electronic imaging device first presses the driving end pressing portion to press the alignment structure downward and align the driving coupling; The electronic imaging device then presses the non-driving end pressing portion, causing the first protrusion to abut against and be pushed by the electronic imaging device, so that the abutment column and the shaft move toward the driving side of the electronic imaging device, thereby driving the power receiving unit to move toward the driving side to a position engaged with the drive coupling.

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