Processing box

Abstract

The utility model discloses a processing box which is detachably installed on a main assembly of an electronic imaging device, the main assembly comprises a driving force transmission component, and the processing box comprises a drum unit comprising a drum holding frame; a developing unit, wherein the drum unit and the developing unit are connected in a relatively rotatable manner; a photosensitive drum rotatably disposed on a drum holding frame of the drum unit; the driving force receiving unit is connected with the photosensitive drum and can receive the driving force of the driving force transmission component to drive the photosensitive drum to rotate; the driving force receiving unit includes an engagement portion that engages the driving force transmission member when the driving force transmission member is engaged with the driving force receiving unit for preventing the driving force receiving unit from disengaging from the driving force transmission member. According to the processing box disclosed by the utility model, the clamping part is arranged on the driving force receiving unit and is used for clamping the driving force transmission component when the driving force transmission component is jointed with the driving force receiving unit, so that the driving force receiving unit is prevented from being separated from the driving force transmission component, and the power transmission is more stable.

Description

[0001] This application is a divisional application of a patent application with an application date of 2023-07-27, an application number of 202322008544X, and an invention name of a processing box. Technical Field

[0002] The utility model relates to the technical field of electronic imaging devices, in particular to a processing box. Background Art

[0003] In the field of electrophotographic imaging devices, an electrophotographic photosensitive member (hereinafter referred to as a photosensitive drum) and a processing device acting on the photosensitive drum are integrally formed into a cartridge (generally referred to as a processing cartridge). Such a processing cartridge can be removed from a main assembly of the imaging device. In this type of structure, the electronic imaging device is provided with a driving force transmission unit, and the processing cartridge is provided with a driving force receiving unit that engages with the driving force transmission unit and receives a rotational driving force.

[0004] Patent No. CN113574469A discloses a main component driving force transmission unit, the driving force transmission unit includes a driving force transmission component, and correspondingly, the driving force receiving unit of the processing box includes a driving force receiving component, the driving force receiving component receives the driving force from the main component by engaging with the driving force transmission component. Since the driving force receiving unit and the driving force transmission unit are not provided with other engaging components, the transmission of the driving force is ensured only by relying on the engagement of the driving force receiving component and the driving force transmission component, which is prone to detachment and unstable connection during the transmission process. Utility Model Content

[0005] According to one aspect of the present invention, there is provided a process cartridge which is detachably mounted to a main assembly of an electronic imaging device, the main assembly comprising a driving force transmission member, the process cartridge comprising:

[0006] a drum unit including a drum holding frame;

[0007] A developing unit, wherein the drum unit and the developing unit are connected in a relatively rotatable manner;

[0008] a photosensitive drum rotatably disposed on a drum holding frame of the drum unit;

[0009] A driving force receiving unit is connected to the photosensitive drum and can receive the driving force of the driving force transmitting component to drive the photosensitive drum to rotate; the driving force receiving unit includes a clamping portion, and when the driving force transmitting component is engaged with the driving force receiving unit, the clamping portion clamps the driving force transmitting component to prevent the driving force receiving unit from being separated from the driving force transmitting component.

[0010] In some embodiments, the driving force receiving unit includes a shaft portion located at a central position thereof, the engaging portion is provided on the shaft portion, and when the driving force receiving unit is engaged with the driving force transmitting member, the engaging portion clamps the positioning boss of the driving force transmitting member.

[0011] In some embodiments, the engaging portion is a first snap-fit ​​structure, and the first snap-fit ​​structure is disposed at an end of the shaft portion facing the driving force transmission member.

[0012] In some embodiments, the first snap-fit ​​structure is an elastic snap-fit, and when the positioning boss is embedded in the shaft, the positioning boss pushes the first snap-fit ​​structure to elastically deform, and the first snap-fit ​​structure clamps the positioning boss under the force of the elastic deformation.

[0013] In some embodiments, the engaging portion is a second snap-fit ​​structure provided on the inner side wall of the shaft portion and protruding toward the axis of the shaft portion, and when the positioning boss is embedded in the shaft portion, the second snap-fit ​​structure clamps the positioning boss.

[0014] In some embodiments, the second buckle structure is an elastic protrusion, and when the positioning boss is embedded in the shaft portion, the elastic protrusion is squeezed and deformed, and after the elastic protrusion is deformed, it hugs the outer surface of the positioning boss.

[0015] In some embodiments, the locking portion is arranged on the outermost circumferential surface of the driving force receiving unit and extends along the axis of the driving force receiving unit, and an annular flange is provided on the driving force transmitting member. When the driving force transmitting member is engaged with the driving force receiving unit, the locking portion clamps the outer surface of the flange.

[0016] In some embodiments, the snap-fitting portion is a third snap-fit ​​structure, one end of which is connected to the outermost circumferential surface of the driving force receiving unit toward one end of the driving force transmitting member, and the other end extends toward the direction close to the driving force transmitting member.

[0017] In some embodiments, the third snap structure is an elastic snap, and when the driving force receiving unit is engaged with the driving force transmitting component, the flange pushes the third snap structure to undergo elastic deformation, and the third snap clamps the flange under the force of the elastic deformation.

[0018] In some embodiments, the engaging portion includes a guiding slope, and the guiding slope is located at one end of the engaging portion facing the driving force transmission member.

[0019] In some embodiments, the guide slope is inclined toward an axis of the driving force receiving unit.

[0020] In some embodiments, there are multiple engaging portions, and the multiple engaging portions are arranged in a ring array on the driving force receiving unit.

[0021] Beneficial effects of the utility model: a clamping portion is provided on the driving force receiving unit of the processing box of the utility model, which is used to clamp the driving force transmission component when the driving force transmission component is engaged with the driving force receiving unit, thereby preventing the driving force receiving unit from being separated from the driving force transmission component, and making the power transmission more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an existing electronic imaging device;

[0023] Figure 2 It is an exploded schematic diagram of a driving force transmission unit of a conventional electronic imaging device;

[0024] Figure 3 It is a structural schematic diagram of an existing first braking force engaging member and a braking force transmitting member;

[0025] Figure 4 is a cross-sectional view of an existing driving force transmission unit;

[0026] Figure 5 is a cutaway perspective view of a conventional driving force transmission unit;

[0027] Figure 6 is a structural schematic diagram of an existing driving force transmission unit;

[0028] Figure 7 A perspective view of a processing box provided in Embodiment 1 of the utility model;

[0029] Figure 8 This is an exploded schematic diagram of a processing box provided in Embodiment 1 of the present utility model;

[0030] Fig. 9 A schematic structural diagram of a driving force receiving unit of a photosensitive drum provided in Embodiment 1 of the utility model;

[0031] Fig.10 A schematic structural diagram of a driving force receiving unit provided in Embodiment 1 of the present utility model without a driving force receiving component;

[0032] Fig.11 A cross-sectional view of a driving force receiving unit provided in Embodiment 1 of the present utility model;

[0033] Fig.12 It is a structural schematic diagram of the driving force receiving unit and the driving force transmitting unit in the electronic imaging device in the first embodiment of the utility model being located at the initial position;

[0034] Fig.13 for Fig.12 A local enlarged schematic diagram of the middle A;

[0035] Fig.14 It is a schematic diagram of the structure of the driving force receiving component in the first embodiment of the utility model cooperating with the driving force transmission unit in the electronic imaging device;

[0036] Fig.15 for Fig.14 A partial enlarged schematic diagram of point B in the middle;

[0037] Fig.16 It is a structural schematic diagram of the driving force receiving component and the driving force transmission unit in the electronic imaging device in the first embodiment of the utility model being located at the second position;

[0038] Fig.17 It is a schematic structural diagram of the driving force receiving member and the driving force transmitting unit in the electronic imaging device located at the second position in the first embodiment of the present utility model observed from another viewing angle;

[0039] Fig.18 A schematic structural diagram of a driving force receiving unit of a photosensitive drum provided in the second embodiment of the utility model;

[0040] Fig.19 This is a schematic structural diagram of the cooperation between the driving force receiving component and the driving force transmission unit in the electronic imaging device in the second embodiment of the utility model;

[0041] Fig. 20 It is a structural schematic diagram of the driving force receiving component and the driving force transmission unit in the electronic imaging device in the second embodiment of the utility model being located at the second position;

[0042] Fig.21 A schematic structural diagram of a driving force receiving unit of a photosensitive drum provided in a third embodiment of the present utility model;

[0043] Fig. 22 It is a cross-sectional view of a driving force receiving unit of Embodiment 3 of the present utility model;

[0044] Fig.23 It is a cross-sectional view of the successful engagement of the driving force receiving member in the third embodiment of the present utility model with the driving force transmitting unit in the electronic imaging device;

[0045] Fig.24 It is a structural schematic diagram of the driving force receiving component and the driving force transmission unit in the electronic imaging device in the fourth embodiment of the utility model being located at the initial position;

[0046] Fig.25 It is a three-dimensional diagram of the driving force receiving unit in the fourth embodiment of the present utility model;

[0047] Fig.26It is a three-dimensional diagram of the driving force transmission unit in the fourth embodiment of the present utility model;

[0048] Fig. 27 It is a three-dimensional diagram of the driving force receiving unit in the fifth embodiment of the present utility model;

[0049] Fig.28 for Fig. 27 Schematic diagram of the enlarged structure of the C position in the middle;

[0050] Fig.29 It is a structural schematic diagram of the driving force receiving component and the driving force transmission unit in the electronic imaging device in the sixth embodiment of the utility model being located at the initial position;

[0051] Fig.30 It is a three-dimensional diagram of the driving force receiving unit in the sixth embodiment of the present utility model. DETAILED DESCRIPTION

[0052] The utility model is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0053] 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 utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] 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 connection; 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.

[0055] In the present utility model, 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.

[0056] 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 utility model. 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.

[0057] Embodiment 1

[0058] like Figure 1 As shown, there is an existing electronic imaging device M, which has basically the same structure and principle as the electronic imaging device M disclosed in Patent No. CN113574469A. The electronic imaging device is only briefly described below. In the following description, the same components as those in Patent No. CN113574469A belong to the same parts and have the same structure and working principle.

[0059] The electronic imaging device M includes a main assembly 170, a drawer 171, and a door cover 11. The main assembly 170 is provided with a housing, a driving force transmission unit 203, a separation mechanism, and a transfer unit, etc. The drawer 171 can accommodate a process cartridge 100 and can move relative to the main assembly 170 to install the process cartridge 100 into the housing of the main assembly 170. The door cover 11 is provided on the outside of the main assembly 170, and can open or close the housing of the main assembly 170.

[0060] like Figures 2 to 6As shown, the driving force 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 rotating member 201 and a driving force transmission member 180, the 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 part 180b for receiving the driving force, and the other end is provided with a driving force transmission part 180d, the driving force transmission member 180 is assembled on the rotating member 201 in a manner that it can be moved along the axial direction M1, and the rotation of the driving force transmission member 180 driven by the rotating member 201 is achieved through the cooperation between the rotation stop part 201b of the rotating member 201 and the rotation stop part 180b of the driving force transmission member 180.

[0061] 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 fourth elastic member 210 and a braking force transmitting 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.

[0062] 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 attached to or abutted against the driving force transmitting portion 180d.

[0063] The shaft portion 207 b of the braking force transmitting member 207 passes through the through holes in the middle of the first and second braking force engaging members 204 and 208 and is connected to the rotating side 206 b of the brake member 206 to be able to transmit braking force to the first and second braking force engaging members 204 and 208 .

[0064] Specifically, the flange portion 207a of the braking force transfer component 207 is provided with a protrusion 207e, and the flange portion 204a of the first braking force engaging component 204 is correspondingly provided with a protrusion 204e. When the protrusion 207e of the braking force transfer component 207 is engaged with the protrusion 204e of the first braking force engaging component 204, the braking force transfer component 207 can transfer the braking force to the first braking force engaging component 204.

[0065] 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 force transmitting member 207 and the brake member 206. When the protrusion 207e of the braking force transmitting 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.

[0066] Continue, reference Figure 4 and Figure 5 One end of the 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.

[0067] The second engagement spring 210 is a compression coil spring and is configured to be clamped and compressed between the end face 206d of the brake member 206 and the flange portion 207a of the braking force transmission member 207. The second engagement 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 braking force transmission member 207.

[0068] Among the components of the drive transmission unit 203 described above, under the action of the first engagement spring 211 and the second engagement spring 210, the protrusion 207f at the end of the braking force 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 drive transmission unit 203 on the main assembly 170 side.

[0069] Among the components of the above-mentioned drive transmission unit 203, the driving force transmission member 180 is capable of moving in the M1A and M1B directions relative to the 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 force transmission member 207 and the rotating member 201, and are also capable of moving in the M1A and M1B directions relative to the driving force transmission member 180.

[0070] Specifically, after the components of the drive transmission unit 203 are assembled, Figure 6As shown, with the positioning boss 180i of the driving force transmission member 180 as the axis, the second braking force engagement member 208 is closer to the positioning boss 180i than the first braking force engagement member 204, and the second braking force engagement member 208 is also provided with an inward protrusion 208e extending toward the positioning boss 180i. Observed in the axial direction of the driving force transmission member 180, the first braking force engagement member 204 and the driving force transmission part 180d are located in the same radius range, and since the second braking force engagement member 208 is located on the inner side of the first braking force engagement member 204, the second braking force engagement member 208 and the driving force transmission part 180d are in different radius ranges. Further, a connecting portion 189 is also provided between the driving force transmission part 180d and the positioning boss 180i, wherein the connecting portion 189 does not interfere with the first braking force engagement member 204 and the second braking force engagement member 208, and the connecting portion 189 can move integrally with the driving force transmission part 180d.

[0071] like Figure 7 and Figure 8 As shown, this embodiment also provides a process cartridge 100 that can be detachably mounted to an electronic imaging device M, the process cartridge 100 includes a drum unit 108 and a developing unit 109, and the drum unit 108 and the developing unit 109 are connected in a relatively rotatable manner. The drum unit 108 includes a drum holding frame 115 (one of the process cartridge housings) and a photosensitive drum 104 rotatably supported on the drum holding frame 115.

[0072] The developing unit 109 includes a developing frame 125 (one of the process cartridge casings) and a developing roller 106 rotatably supported on the developing frame 125 , and the developing roller 106 and the photosensitive drum 104 face each other to enable a developing operation.

[0073] like Figures 9 to 11As shown, a driving force receiving unit 14 is provided at one end of the photosensitive drum 104, wherein the driving force receiving unit 14 can be directly connected to the photosensitive drum 104 or indirectly connected. In this embodiment, the driving force receiving unit 14 is directly connected to the photosensitive drum 104. Specifically, the driving force receiving unit 14 is provided with a shaft portion 147 located at its central axis position and a shielding plate 144 provided outside the shaft portion 147, wherein the shielding plate 144 is used to contact with the second braking force engaging member 208 to block the protruding portion of the driving force transmission unit 203 from entering in the axial direction. Further, the driving force receiving unit 14 has a protrusion protruding outward from the shaft portion 147 along the axis L direction of the photosensitive drum 104. The protrusion has a guide portion and a braking force receiving portion 146, wherein the guide portion is a first guide portion 1451 and a second guide portion 1452, the first guide portion 1451 is located on the upstream side of the second guide portion 1452 in the rotation direction (arrow G direction), and the first guide portion 1451 is adjacent to the shutter 144, and the braking force receiving portion 146 is a side surface facing the downstream side of the rotation direction G. Fig.10 As shown, a notch 149 is further formed on the end surface 141 of the driving force receiving unit 14 .

[0074] In order to receive the driving force from the driving force transmission unit 203 in the electronic imaging device, a driving force receiving member 410 is also provided on the driving force receiving unit 14. Specifically, the driving force receiving member 410 is a long rod-shaped member, the first end 411 of which is fixedly connected to the top plate 420 arranged inside the photosensitive drum 104, and the second end 412 is exposed to the outside of the driving force receiving unit 14 through the notch 149, and the driving force receiving member 410 can move along the axial direction in the photosensitive drum 104 after being acted upon by an external force, thereby driving the top plate 420 to move axially inside the photosensitive drum 104. Further, the second end 412 of the driving force receiving member 410 is provided with a contact surface 4122, a first inclined surface 4121 and a second inclined surface 4123. The contact surface 4122 is a plane parallel to the end surface 141 and is located between the first inclined surface 4121 and the second inclined surface 4123. The first inclined surface 4121 and the second inclined surface 4123 are surfaces that are inclined relative to the axis L of the photosensitive drum 104 and have different inclination directions.

[0075] The driving force receiving unit 14 further includes a first elastic member 440 and a second elastic member 450. The first elastic member 440 is sleeved on the driving force receiving member 410, one end of which abuts against the inner wall of the driving force receiving unit 14, and the other end abuts against the driving force receiving member 410. The second elastic member 450 is installed in the inner cavity of the photosensitive drum 104, one end of which abuts against the top plate 420, and the other end abuts against the bottom plate 430, so that the driving force receiving member 410 can be maintained in an extended state by the elastic force of the first elastic member 440 and the second elastic member 450. Optionally, the first elastic member 440 and the second elastic member 450 can be springs.

[0076] Next, the meshing process of the driving force receiving unit 14 and the driving force transmitting unit 203 in the electronic imaging device will be described.

[0077] like Fig.12 and Fig.13 As shown, after the process cartridge is installed in the electronic imaging device, the door cover 11 of the electronic imaging device is closed, and the driving force transmission unit 203 in the electronic imaging device moves toward the driving force receiving unit 14 of the process cartridge along the direction M1B, and gradually moves to a position in contact with the driving force receiving unit 14. At this time, the shutter 144 abuts against the inward protrusion 208e of the second braking force engagement member 208, so that the second braking force engagement member 208 and the first braking force engagement member 204 stop moving toward the photosensitive drum 104, and because the driving force transmission part 180d and the shutter 144 are not in the same radial range, the shutter 144 will not interfere with the driving force transmission part 180d, so other components in the driving force transmission unit 203 still move toward the driving force receiving unit 14 along the direction M1B, and the position where the shutter 14 abuts against the second braking force engagement member 208 is called the initial position, that is, the position where the driving force receiving unit 14 abuts against the driving force transmission unit 203 is called the initial position.

[0078] like Fig.14 and Fig.15As shown, since the baffle 144 blocks the first braking force engaging member 204 and the second braking force engaging member 208 from continuing to move along the M1 direction, the first braking force engaging member 204 is disconnected from the braking force transmitting member 207 at this time, and the first braking force engaging member 204 and the second braking force engaging member 208 can be converted to a state of rotating without receiving the rotational load of the brake member 206. At this time, in order to complete the engagement of the driving force transmission unit 203 and the driving force receiving unit 14, the driving force transmission unit 203 further rotates from the abutting state, and the driving force transmission part 180d begins to rotate around the rotation direction G, and pushes the first braking force engagement member 204 abutting against it to rotate together. After the first braking force engagement member 204 is subjected to force, it drives the second braking force engagement member 208 engaged with it to rotate synchronously, and the second braking force engagement member 208 moves along the first guide part 1451 to a position in contact with the first inclined surface 4121 of the driving force receiving member 410, and gives the driving force receiving member 410 a force in the direction of M1B to retract it. As the driving force transmission unit 203 rotates and approaches the photosensitive drum 104, the second braking force engagement member 208 passes through the first inclined surface 4121, the abutting surface 4122, the second inclined surface 4123 and the second guide part 1452 in sequence and moves to a position engaged with the braking force receiving part 146. Fig.16 and Fig.17 As shown, in this state, the first braking force engaging member 204 is separated from the driving force transmitting portion 180d by a certain gap, and since the second braking force engaging member 208 no longer interferes with the driving force transmitting member 410, the driving force transmitting member 410 recovers the extended state under the action of the first elastic member 440 and the second elastic member 450 and is inserted into the position abutting against the connecting portion 189, so that the driving force receiving unit 14 abuts against the connecting portion 189 through the driving force receiving member 410 to receive the driving force from the driving force transmitting member 180, and engages with the second braking force engaging member 208 through the braking force receiving portion 146 to receive the braking force, thereby realizing the driving force transmission between the driving force transmitting unit 203 and the driving force receiving unit 14.

[0079] By directly contacting the driving force receiving member 410 with the connecting portion 189 in the driving force transmitting member 180 to receive power, the driving force transmitting member 180 and the driving force receiving member 410 can be more stably engaged and less likely to disengage, thereby making power transmission more stable.

[0080] Embodiment 2

[0081] This embodiment provides a processing box with an improved structure based on the first embodiment. The structure of the processing box of this embodiment is basically the same as that of the processing box of the first embodiment. The similarities are not repeated here. The differences are mainly introduced below.

[0082] like Fig.18 As shown, a driving force receiving unit B14 is provided at one end of the photosensitive drum 104. Specifically, the driving force receiving unit B14 includes a shaft portion B147, a shielding plate B144 and a guide portion B145, wherein a braking force receiving portion B146 is also provided along one end of the guide portion B145, and B146 is a side surface facing the downstream side of the rotation direction G. Further, the driving force receiving unit B14 also includes a driving force receiving member B410. Different from the first embodiment, the driving force receiving member B410 in this embodiment is a protrusion protruding outward from the end surface B141 of the driving force receiving unit B14, and the driving force receiving member B410 is provided with a driving force receiving portion B411 outwardly along the axial direction of the photosensitive drum 104. The driving force receiving portion B411 is a surface inclined relative to the axis L of the photosensitive drum 104, and its height gradually increases toward the end surface B141 along the rotation direction G of the driving force receiving unit B14. It should be noted that the driving force receiving member B410 and the guide portion B145 are not located in the same radial range, that is, the driving force receiving member B410 is farther from the axis L than the guide portion B145 in the radial direction. Preferably, in order to avoid interference between the driving force receiving member B410 and the driving force transmitting unit 203 when not engaged with the driving force transmitting unit 203, the driving force receiving member B410 can be axially moved by providing an elastic member (not shown) in the driving force receiving unit B14.

[0083] like Fig.19 As shown, after the processing box is installed in the electronic imaging device, the door cover is closed, and the driving force transmission unit 203 gradually moves toward the photosensitive drum 104 along the M1B direction. When the driving force transmission member 180 moves to abut against the driving force receiving unit B14, since the driving force transmission unit 203 continues to move along the M1B direction, the guide portion B145 at this time will press the second braking force coupling member 208 and prevent the second braking force coupling member 208 and the first braking force coupling member 204 from continuing to move toward the M1B direction. The second braking force coupling member 208 and the first braking force coupling member 204, which are no longer subjected to the rotational load of the braking member 206, move along the guide portion B145 toward the downstream side of the rotation direction G.

[0084] like Fig. 20 As shown, when the second braking force engaging member 208 moves to engage with the braking force receiving part B146, the driving force receiving part B411 of the driving force receiving member B410 also simultaneously abuts against the inclined surface of the first braking force engaging member 204. At this time, the driving force receiving member B410 is in a state capable of receiving the braking force from the second braking force engaging member 208.

[0085] As the driving force transmission member 180 rotates along the rotation direction G, the driving force transmission part 180d also moves toward the first braking force engagement member 204 in the rotation direction G, and then abuts against the first braking force engagement member 204 and pushes the first braking force engagement member 204 to rotate. Since the first braking engagement member 204 and the second braking engagement member 208 rotate integrally, the driving force receiving member B410 can receive the driving force from the first braking force engagement member 204. At this time, the driving force receiving member B410 is successfully engaged with the driving force transmission unit 203 in the electronic imaging device, and the driving force receiving member B410 is in the second position.

[0086] Different from the first embodiment, the first braking force applying member 204 as the braking force applying member is used as a driving force transmitting member in this embodiment to transmit the driving force to the driving force receiving member B140.

[0087] This structural setting drives the driving force receiving unit B14 to rotate through the first braking force applying component 204, thereby avoiding the driving force receiving unit B14 being worn by the forces of both the driving force transmitting part 180d and the braking force applying component during the imaging process, thereby increasing the service life of the driving force receiving unit B14 and making the power transmission more stable.

[0088] Embodiment 3

[0089] This embodiment provides a processing box with an improved structure based on the first embodiment. The structure of the processing box of this embodiment is basically the same as that of the processing box of the first embodiment. The similarities are not repeated here. The differences are mainly introduced below.

[0090] like Fig.21 and Fig. 22 As shown, a driving force receiving unit C14 is provided at one end of the photosensitive drum 104. Specifically, the driving force receiving unit C14 includes a shaft portion C147, a shielding plate C144 and a guide portion C145, wherein a through hole C149 is provided on an end surface C141 of the driving force receiving unit C14. In this embodiment, the structure of the braking force receiving portion is cancelled, that is, a plane perpendicular to the axis L is provided along the guide portion C145 in the rotation direction G, and the plane cannot receive the braking force from the braking force engagement assembly.

[0091] Specifically, the driving force receiving unit C14 includes a driving force receiving member C411, wherein the driving force receiving member C411 is configured to move in the direction of the axis L. The driving force receiving unit C411 also includes a pressing member C412, a top plate C413, a support portion C414, and a bottom plate C415. Preferably, the pressing member C412 is disposed in the shaft portion C147 and can move along the axis L, and the third elastic member C440 passes through the center hole of the top plate C413 and abuts against the pressing member C412 and the support portion C414, respectively, so as to apply elastic force to the pressing member C412 and the support portion C414. The fourth elastic member C450 is disposed in the photosensitive drum 104, one end of which abuts against the support portion C414, and the other end abuts against the bottom plate C415. Through the elastic force of the third elastic member C440 and the fourth elastic member C450, the pressing member C412 is always kept in an extended state when not acted upon by an external force.

[0092] Further, the driving force receiving unit C14 further includes a movable member C416, through which the driving force receiving member C411 is movably connected to the supporting portion C414, and a fifth elastic member C460 is sleeved on the driving force receiving member C411 and abuts against the top plate C413. One end of the driving force receiving member C411 can be exposed in the through hole C149 through the positioning hole C4131 of the top plate C413. In addition, a sixth elastic member C470 is further provided between the movable member C416 and the supporting portion C414, for providing an elastic force to restore the movable member C416 to an initial state.

[0093] In this embodiment, the number of the driving force receiving components C411 is four, of which two are arranged in a group axially symmetrically. Since the driving force transmitting portion 180d of the driving force transmitting component 180 is an axisymmetric structure, the driving force receiving components C411 are arranged in a group of two, and can also cooperate with the driving force transmitting portion 180d to transmit power.

[0094] like Fig.23As shown, after the processing box is installed in the electronic imaging device, the door cover is closed, the driving force transmission unit 203 moves toward the photosensitive drum 104 along the M1B direction, and the guide portion C145 abuts against the second braking force engagement member 208, so that the second braking force engagement member 208 moves toward the M1A direction relative to other components of the driving force transmission unit 203, and is no longer subjected to the rotational load of the braking member 206, thereby moving along the guide portion C145 toward the downstream side of the rotation direction G. Since the first braking engagement member 204 and the second braking engagement member 208 rotate integrally, the first braking force engagement member 204 also moves synchronously with the second braking force engagement member 208, thereby generating a certain gap between the driving force transmission portion 180d and the first braking force engagement member 204. At this time, accompanied by the driving force transmission With the movement of the unit 203, the positioning boss 180i abuts against the pressing piece C412, and the pressing piece C412 moves along the M1B direction in the shaft portion C147, thereby compressing the third elastic piece C440 and the supporting portion C414. The movable piece C416 is then subjected to the force to drive the driving force receiving component C411 to move along the M1A direction. The driving force receiving component C411 extends out from the through hole C149 and clamps the driving force transmitting portion 180d, that is, the driving force transmitting portion 180d is located between the two driving force receiving components C411. As the driving force transmitting unit 203 rotates around the rotation direction G, the driving force receiving component C411 abuts against the driving force transmitting portion 180d and receives the driving force therefrom, thereby realizing the power transmission between the driving force transmitting unit 203 and the driving force receiving unit C14. Since the braking force receiving portion is eliminated in the present embodiment, the first braking force engaging member 204 and the second braking force engaging member 208 do not apply a braking force to the driving force receiving unit C14 during power transmission.

[0095] Optionally, in this embodiment, the driving force receiving component C411 is configured as an axially movable structure to clamp the driving force transmitting part 180d, but the driving force receiving component C411 is not necessarily limited to this structure. The driving force receiving component C411 can also be configured as a radially movable structure, and similarly, power transmission can be achieved by clamping the driving force transmitting part 180d.

[0096] Embodiment 4

[0097] This embodiment provides a processing box with an improved structure based on the first embodiment. The structure of the processing box of this embodiment is basically the same as that of the processing box of the first embodiment. The similarities are not repeated here. The differences are mainly introduced below.

[0098] refer to Figure 24 to Figure 26, a driving force receiving unit 14 is provided at one end of the photosensitive drum 104, wherein the driving force receiving unit 14 can be directly connected to the photosensitive drum 104 or indirectly connected. In the present embodiment, the driving force receiving unit 14 is directly connected to the photosensitive drum 104. Specifically, the driving force receiving unit 14 is provided with a shaft portion D147 of a hollow structure and a shielding plate D144 provided outside the shaft portion D147, wherein the shielding plate D144 is used to contact with the second braking force engaging member 208 to block the protruding portion of the driving force transmission unit 203 from entering in the axial direction. In addition, the driving force receiving unit 14 is also provided with a guide portion D1453, one end of which is adjacent to the shielding plate D144.

[0099] Furthermore, the driving force receiving unit 14 has a protrusion D148 protruding outward from the shaft portion D147 along the axial direction of the photosensitive drum 104, and the side surface of the protrusion D148 on the upstream side of the rotation direction G is a driving force receiving surface D1455, and the side surface of the protrusion D148 on the downstream side of the rotation direction G is a first plane D1454 perpendicular to the end face 141 of the driving force receiving unit 14, wherein the driving force receiving surface D1455 is used to abut against the driving force transmitting portion 180d to receive the driving force, and the first plane D1454 is a vertical plane and cannot engage with the first braking force engaging member 204 and the second braking force engaging member 208, that is, the driving force receiving unit 14 cannot receive the braking force of the braking force applying assembly.

[0100] In some embodiments, the driving force receiving unit 14 is further provided with a snap-fitting portion, which is used to snap-fit ​​with the driving force transmitting member 180 when the driving force receiving unit 14 is engaged with the driving force transmitting member 180 to prevent the two from being separated. Specifically, the snap-fitting portion is a first snap-fitting structure D151 provided on the shaft portion D147, and two first snap-fitting structures D151 on the shaft portion D147 are provided, and the two first snap-fitting structures D151 are provided on the end portion of the shaft portion D147 (the end facing the driving force transmitting member 180), and the two first snap-fitting structures D151 are installed on the shaft portion D147 and can be elastically deformed, that is, the first snap-fitting structure D151 is an elastic snap-fitting structure, and the first snap-fitting structure D151 can clamp the positioning boss 180i of the driving force transmitting member 180 through the force of elastic deformation.

[0101] The first buckle structure D151 is also provided with a guiding inclined surface D152, so that when the positioning boss 180i of the driving force transmission member 180 is embedded in the shaft portion D147, it can be guided by the guiding inclined surface D152 to slide into the shaft portion D147. Specifically, the guiding inclined surface D152 is provided at the front end of the first buckle structure D151 (the end facing the driving force transmission member 180), and is inclined toward the inner wall of the shaft portion D147, so that when the positioning boss 180i is embedded in the shaft portion D147, it is first guided by the guiding inclined surface D152, passes between the two first buckle structures D151, and pushes the two first buckle structures D151 to elastically deform, and the two first buckle structures D151 clamp the positioning boss 180i under the action force of their elastic deformation.

[0102] Further, two first buckle structures D151 are arranged in a circular array on the driving force receiving unit 14. Specifically, in this embodiment, the two first buckle structures D151 are arranged in a circular array on the shaft portion D147 with the axis L of the shaft portion D147 as the center. Alternatively, in some other embodiments, multiple first buckle structures D151 can be arranged in a circular array on the shaft portion with the axis L of the shaft portion D147 as the center, which can be used to clamp the positioning boss 180i embedded in the shaft portion D147, and the number is not limited here.

[0103] In order to receive the driving force from the driving force transmitting unit 203 in the electronic imaging device, the meshing process of the driving force receiving unit 14 and the driving force transmitting unit 203 in the electronic imaging device is described below.

[0104] After the process cartridge is installed in the electronic imaging device, the door cover 11 of the electronic imaging device is closed, and the driving force transmission unit 203 in the electronic imaging device moves toward the driving force receiving unit 14 of the process cartridge along the direction of M1B, and gradually moves to a position in contact with the driving force receiving unit 14. At this time, the shutter D144 abuts against the inward protrusion 208e of the second braking force engagement member 208, so that the second braking force engagement member 208 and the first braking force engagement member 204 stop moving toward the photosensitive drum 104, and because the driving force transmission part 180d and the shutter D144 are not in the same radial range, the shutter D144 will not interfere with the driving force transmission part 180d, so other components in the driving force transmission unit 203 still move toward the driving force receiving unit 14 along the direction of M1B, and the position where the shutter D144 abuts against the second braking force engagement member 208 is called the initial position, that is, the position where the driving force receiving unit 14 abuts against the driving force transmission unit 203 is called the initial position.

[0105] like Fig.24As shown, since the shield D144 blocks the first braking force engaging member 204 and the second braking force engaging member 208 from continuing to move in the M1B direction, the first braking force engaging member 204 is disconnected from the braking force transmitting member 207, and the first braking force engaging member 204 and the second braking force engaging member 208 can be converted to a state of rotating without receiving the rotational load of the brake member 206. At this time, in order to complete the engagement of the driving force transmitting unit 203 and the driving force receiving unit 14, the driving force transmitting unit 203 further rotates from the abutting state, and the driving force transmitting portion 180d begins to rotate around the rotation direction G, and pushes the first braking force engaging member 204 abutting against it to rotate together. After the first braking force engaging member 204 is subjected to force, it drives the second braking force engaging member 208 engaged therewith to rotate synchronously, and the second braking force engaging member 208 moves along the guide portion D1453 to a position on the side of the first plane D1454. As the driving force transmitting unit 203 rotates and approaches the photosensitive drum 104, as shown in FIG. Fig.25 and Fig.26 As shown, in this state, the protrusion D148 enters the gap 220 between the first braking force engaging member 204 and the driving force transmitting portion 180d, and the driving force receiving surface D1455 of the protrusion D148 abuts against the driving force transmitting portion 180d to receive the driving force from the driving force transmitting member 180. Since the first plane D1454 is a vertical plane, its shape does not engage with the first braking force engaging member 204 and the second braking force engaging member 208, so the first plane D1454 does not receive the braking force from the first braking force engaging member 204 and the second braking force engaging member 208. In addition, during the movement of the driving force transmitting unit 203 toward the driving force receiving unit 14, the positioning boss 180i is guided by the guiding inclined surface D152 to be embedded in the shaft portion D147, and the positioning boss 180i can be clamped by the two first buckle structures D151, thereby preventing the driving force receiving unit 14 from being separated from the driving force transmitting unit 203 during the driving force transmission process.

[0106] By providing a structure in which the engaging portion clamps the positioning boss 180i, the engagement between the driving force transmitting member 180 and the driving force receiving unit 14 can be made more stable and less likely to be disengaged, thereby making the power transmission more stable.

[0107] Embodiment 5

[0108] This embodiment provides a processing box with improved structure on the basis of embodiment four. The structure of the processing box of this embodiment is basically the same as that of the processing box of embodiment four, and the similarities are not repeated here. The differences are mainly introduced below.

[0109] refer to Fig. 27 , Fig.28The other structures of the driving force receiving unit 14 of this embodiment are the same as those of the fourth embodiment, and the main difference lies in the different structure of the snap-fitting portion. Specifically, in this embodiment, the shaft portion E147 is hollow inside, and the snap-fitting portion is a second snap-fitting structure E151 provided on the inner side wall of the shaft portion E147 and protruding toward the center of the axis L. When the positioning boss 180i is embedded in the shaft portion E147, it can be clamped by the second snap-fitting structure E151.

[0110] Specifically, in this embodiment, two second snap-in structures E151 are provided on the inner wall of the shaft E147. The two second snap-in structures E151 are arranged opposite to each other on the inner wall of the shaft, and the distance between the two second snap-in structures E151 is slightly smaller than the diameter of the positioning boss 180i. When the positioning boss 180i is embedded in the shaft E147, it can be clamped by the two second snap-in structures E151, so that the driving force transmission component 180 will not move easily when connected to the driving force receiving unit 14.

[0111] Optionally, the second snap-fit ​​structure E151 may be an elastic protrusion, and when the positioning boss 180i is embedded in the shaft portion E147, the elastic protrusion is squeezed and deformed, and after the elastic protrusion is deformed, it hugs the outer surface of the positioning boss 180i.

[0112] Optionally, the number of the second snap-fit ​​structures E151 can be greater, and a plurality of second snap-fit ​​structures E151 can be distributed along the rotation direction G on the inner side wall of the shaft portion E147 .

[0113] Furthermore, the second buckle structure E151 is also provided with a guiding bevel E152, so that when the positioning boss 180i is embedded in the shaft E147, it can be guided by the guiding bevel E152 to slide into the shaft E147. Specifically, in this embodiment, the guiding bevel E152 is arranged on the side of the second buckle structure E151 in the direction of the axis L of the shaft E147, inclined toward the axis L of the shaft D147, and arranged at the front side of the second buckle structure E151 in the M1A direction, so that when the positioning boss 180i is embedded in the shaft E147, it is first guided by the guiding bevel E152, and then enters the shaft E147 and is clamped by the two second buckle structures E151.

[0114] Embodiment 6

[0115] This embodiment provides a processing box with improved structure on the basis of embodiment four. The structure of the processing box of this embodiment is basically the same as that of the processing box of embodiment four, and the similarities are not repeated here. The differences are mainly introduced below.

[0116] refer to Fig.29 , Fig.30, the other structures of the driving force receiving unit 14 of this embodiment are the same as those in the fourth embodiment, and the main difference lies in the structure of the snap-fitting portion and the structure of the driving force transmission member 180 cooperating with the snap-fitting portion. Specifically, in this embodiment, the snap-fitting portion is provided on one end of the photosensitive drum 104 and is located outside the driving force receiving unit 14. The driving force transmission member 180 is provided with a ring-shaped flange 180h. When the driving force transmission member 180 is engaged with the driving force receiving unit 14, the flange 180h extends toward the M1B direction at one end of the driving force transmission member 180 near the driving force receiving unit 14. The snap-fitting portion can prevent the two from being separated by clamping on the outer surface of the flange 180h, so that the driving force transmission member 180 can maintain a stable engagement with the driving force receiving unit 14. Specifically, in this embodiment, the engaging portion is a third snap-fit ​​structure F151 disposed on one end of the driving force receiving unit 14, wherein the third snap-fit ​​structure F151 is disposed on the outermost circumferential surface of the driving force receiving unit 14 and extends on the axis L, that is, one end of the third snap-fit ​​structure F151 is connected to the outermost circumferential surface of one end of the driving force receiving unit 14 facing the M1A direction, and the other end extends in a direction close to the driving force transmitting member 180 (that is, extends along the M1A direction). The third snap-fit ​​structure F151 is an elastic snap-fit. Further, the number of the third snap-fit ​​structures F151 in this embodiment is three, and the three third snap-fit ​​structures F151 are evenly arranged along the rotation direction G. When the driving force transmitting member 180 is engaged with the driving force receiving unit 14, the flange 180h on the driving force transmitting member 180 falls between the three third snap-fit ​​structures F151, and can be clamped by the three third snap-fit ​​structures F151, so that the driving force transmitting member 180 will not move easily when connected to the driving force receiving unit 14.

[0117] Furthermore, the third buckle structure F151 is also provided with a guiding bevel F152, so that when the positioning boss 180i is embedded in the shaft portion F147, it can be guided by the guiding bevel F152 to slide into the shaft portion F147. Specifically, in this embodiment, the guiding bevel F152 is arranged at the front side of the third buckle structure F151, that is, it is located at the front side of the third buckle structure F151 in the M1A direction, and is inclined toward the axis L of the shaft portion F147, so that when the flange 180h is embedded between the three third buckle structures F151, it is first guided by the guiding bevel F152 and pushes the three third buckle structures F151 to undergo elastic deformation. The three third buckle structures F151 clamp the outer surface of the flange 180h under the action force of their elastic deformation, thereby preventing the driving force receiving unit 14 from being separated from the driving force transmitting member 180.

[0118] Optionally, the number of the third snap-fit ​​structures F151 may be more or less, with a minimum of two, and a plurality of third snap-fit ​​structures F151 are distributed along the rotation direction G on the outermost circumferential surface of the driving force receiving unit 14 .

[0119] 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 inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A process cartridge detachably mounted to a main assembly of an electronic imaging device, the main assembly comprising a driving force transmission member, characterized in that: The processing box comprises: a drum unit including a drum holding frame; A developing unit, wherein the drum unit and the developing unit are connected in a relatively rotatable manner; a photosensitive drum rotatably disposed on a drum holding frame of the drum unit; A driving force receiving unit is connected to the photosensitive drum and can receive the driving force of the driving force transmitting component to drive the photosensitive drum to rotate; the driving force receiving unit includes a clamping portion, and when the driving force transmitting component is engaged with the driving force receiving unit, the clamping portion clamps the driving force transmitting component to prevent the driving force receiving unit from being separated from the driving force transmitting component.

2. The process cartridge according to claim 1, wherein: The driving force receiving unit includes a shaft portion located at a central position thereof, the engaging portion is provided on the shaft portion, and when the driving force receiving unit is engaged with the driving force transmitting member, the engaging portion clamps the positioning boss of the driving force transmitting member.

3. The process cartridge according to claim 2, wherein: The engaging portion is a first buckle structure, and the first buckle structure is arranged at the end of the shaft portion facing the driving force transmission member.

4. The process cartridge according to claim 3, wherein: The first buckle structure is an elastic buckle. When the positioning boss is embedded in the shaft, the positioning boss pushes the first buckle structure to cause elastic deformation. The first buckle structure clamps the positioning boss under the force of the elastic deformation.

5. The process cartridge according to claim 2, wherein: The engaging portion is a second buckle structure provided on the inner side wall of the shaft portion and protruding toward the axis of the shaft portion. When the positioning boss is embedded in the shaft portion, the second buckle structure clamps the positioning boss.

6. The process cartridge according to claim 5, wherein: The second buckle structure is an elastic protrusion. When the positioning boss is embedded in the shaft, the elastic protrusion is squeezed and deformed. After the elastic protrusion is deformed, it hugs the outer surface of the positioning boss.

7. The process cartridge according to claim 1, wherein: The engaging portion is arranged on the outermost circumferential surface of the driving force receiving unit and extends along the axis of the driving force receiving unit. The driving force transmitting member is provided with an annular flange. When the driving force transmitting member is engaged with the driving force receiving unit, the engaging portion clamps the outer surface of the flange.

8. The process cartridge according to claim 7, wherein: The engaging portion is a third buckle structure, one end of which is connected to the outermost circumferential surface of the driving force receiving unit toward one end of the driving force transmitting member, and the other end of which extends toward the direction close to the driving force transmitting member.

9. The process cartridge according to claim 8, wherein: The third buckle structure is an elastic buckle. When the driving force receiving unit is engaged with the driving force transmitting member, the flange pushes the third buckle structure to cause elastic deformation, and the third buckle clamps the flange under the force of the elastic deformation.

10. The process cartridge according to any one of claims 1 to 9, characterized in that: The engaging portion includes a guide slope, and the guide slope is located at one end of the engaging portion facing the driving force transmission member.

11. The process cartridge according to claim 10, wherein: The guide slope is inclined toward an axis of the driving force receiving unit.

12. The process cartridge according to any one of claims 1 to 9, characterized in that: There are multiple engaging portions, and the multiple engaging portions are arranged in a ring array on the driving force receiving unit.

Images