Processing box

Abstract

The utility model discloses a processing box, which comprises a frame body, a developing roller; a photosensitive drum; the flange is arranged at the right end of the photosensitive drum in the left-right direction and can rotate along with the photosensitive drum; the coupling piece is mounted on the flange, and the coupling piece can receive the driving force output by the power output piece and can transmit the driving force to the developing roller and the photosensitive drum; the control part is arranged at the right end of the frame body in the left-right direction and can be used for controlling the power output piece so as to restrain the inclination of the power output piece; the coupling part comprises a coupling convex part which can be coupled with the power output part and a tooth part which is coaxially arranged with the photosensitive drum, the tooth part can rotate in response to the rotation of the coupling convex part, and the coupling convex part and the tooth part are fixedly connected and can move together in the left-right direction relative to the photosensitive drum.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic photographic imaging, in particular to a processing box. Background Art

[0002] In conventional imaging devices, a processing device (i.e., a developing cartridge) that can act on a photosensitive drum and the photosensitive drum are integrated into a cartridge, which is removably mounted to the imaging device. Depending on the type of cartridge, maintenance operations on the device can be performed by the user without relying on service personnel, thereby significantly improving operability. Therefore, this type of cartridge is widely used in imaging devices.

[0003] The prior art discloses an imaging device and a process cartridge installed therein. The imaging device includes a power output member capable of outputting power, and the process cartridge includes a coupling member fixedly mounted at one end of a photosensitive drum. When the process cartridge is installed in the imaging device, the power output member extends from the imaging device and couples with the coupling member of the process cartridge, thereby driving the photosensitive drum to rotate. However, because the coupling member is fixedly mounted at one end of the photosensitive drum, proper coupling between the coupling member and the power output member requires a higher degree of precision relative to the length of the photosensitive drum. This, in turn, increases the manufacturing and assembly precision requirements of the process cartridge. Otherwise, interference between the coupling member and the imaging device or insufficient coupling between the coupling member and the power output member may occur. Utility Model Content

[0004] In order to solve the above problems, the present invention provides a new processing box, which is mainly achieved through the following technical solutions:

[0005] A process cartridge is detachably mounted in an imaging device having a power output member, the process cartridge comprising:

[0006] frame;

[0007] a developing roller rotatably supported on the frame;

[0008] The photosensitive drum is rotatably supported on the frame and can rotate around a photosensitive drum axis extending in the left-right direction; the flange is installed at the right end of the photosensitive drum in the left-right direction and can rotate along with the photosensitive drum;

[0009] a coupling member, mounted on the flange, capable of receiving the driving force output by the power output member and transmitting the driving force to the developing roller and the photosensitive drum;

[0010] a control portion, disposed at a right end of the frame in the left-right direction and configured to control the power output member to suppress tilting of the power output member;

[0011] The coupling member can move in the left and right directions relative to the photosensitive drum. The coupling member includes a coupling protrusion that can be coupled to the power output member and a tooth portion that is coaxially arranged with the photosensitive drum. The tooth portion can rotate in response to the rotation of the coupling protrusion. The coupling protrusion and the tooth portion are fixedly connected.

[0012] Furthermore, the coupling protrusion and the tooth portion are integrally formed.

[0013] Furthermore, a limiting groove extending in the left-right direction is provided on one of the coupling member and the flange, and a limiting protrusion extending in the left-right direction is provided on the other of the coupling member and the flange, and the limiting protrusion can be inserted into the limiting groove to limit the position of the coupling member in a direction intersecting the left-right direction.

[0014] Furthermore, an elastic member is provided between the coupling member and the flange.

[0015] Furthermore, the tooth portion is a spur gear.

[0016] Furthermore, the frame is provided with an exposing hole for the coupling member to pass through and for exposing the coupling protrusion to the outside of the processing box, and the diameter of the exposing hole is D, wherein 11.5 mm<D<17.5 mm.

[0017] Furthermore, the coupling member has an extended position and a retracted position in the left and right directions, and at least a portion of the coupling member in the extended position is farther away from the left end of the photosensitive drum than the coupling member in the retracted position. When the coupling member is not subjected to external force, the coupling member is in the extended position. When the coupling member is in the extended position, the distance between the right end surface of the coupling protrusion and the left end surface of the control portion is P, wherein 1.5mm≦P≦5mm.

[0018] A process cartridge is detachably mounted in an imaging device having a power output member, the process cartridge comprising:

[0019] frame;

[0020] a developing roller rotatably supported on the frame;

[0021] The photosensitive drum is rotatably supported on the frame and can rotate around a photosensitive drum axis extending in the left-right direction; the flange is installed at the right end of the photosensitive drum in the left-right direction and can rotate along with the photosensitive drum;

[0022] a coupling member, mounted on the flange, capable of receiving the driving force output by the power output member and transmitting the driving force to the developing roller and the photosensitive drum;

[0023] a control portion, disposed at a right end of the frame in the left-right direction and configured to control the power output member to suppress tilting of the power output member;

[0024] The processing box also includes a positioning portion arranged at the right end of the frame in the left-right direction, the positioning portion includes a positioning recess, the positioning recess can accommodate at least a portion of the power output member to suppress the deflection of the power output member, the positioning portion is separately arranged from the frame and can move between an extended position and a retracted position in the left-right direction relative to the frame, at least a portion of the positioning portion in the extended position is farther away from the left end of the photosensitive drum than the positioning portion in the retracted position, and when the positioning portion is not subjected to a force from outside the processing box, the positioning portion is in the extended position.

[0025] Furthermore, an elastic member is provided between the positioning member and the frame.

[0026] Furthermore, when the positioning portion is in the extended position, the distance between the right end surface of the positioning portion and the left end surface of the control portion is K, wherein 1.5 mm≦K≦4.5 mm.

[0027] On the one hand, the present invention arranges the coupling member into an elastically telescopic movable structure, and the telescopic movable travel distance of the coupling member can be used to compensate for the deviation distance of the coupling member from the correct position in the left and right directions caused by the manufacturing error or installation error of the coupling member; on the other hand, by arranging the positioning part into an elastically telescopic movable structure, the positioning part can be extended further outward for a distance, and can be limited in advance during the extension process of the power output member; this can improve the coupling success rate and coupling stability of the coupling member and the power output member of the imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the process of installing the process cartridge to the imaging device in Example 1 of the present utility model;

[0029] Figure 2 This is a schematic diagram of a processing box in Example 1 of the present utility model at a certain angle;

[0030] Figure 3 This is a schematic diagram of the process cartridge in Example 1 of the present utility model from another angle;

[0031] Figure 4 This is a schematic diagram of the process of installing the process cartridge to the imaging device in Example 1 of the present utility model;

[0032] Figure 5 This is another angled schematic diagram of the process cartridge in Example 1 of the present utility model;

[0033] Figure 6 This is a schematic diagram of the photosensitive drum decomposed from the drum frame in Example 1 of the present utility model;

[0034] Figure 7 This is a schematic diagram of the coupling member, flange, and elastic member decomposed from the photosensitive drum in Example 1 of the present utility model;

[0035] Figure 8 This is a schematic diagram of a position change of the coupling member between the extended position and the retracted position in Example 1 of the present utility model at a certain angle;

[0036] Figure 9 This is a schematic diagram showing the position change of the coupling member between the extended position and the retracted position in Example 1 of the present invention from another angle;

[0037] Figure 10 2 is a schematic cross-sectional view of the position change of the coupling member between the extended position and the retracted position in Example 1 of the present utility model;

[0038] Figure 11 This is a schematic diagram of a processing box in Example 2 of the present utility model at a certain angle;

[0039] Figure 12 This is a schematic diagram of a drum unit in Example 2 of the present utility model at a certain angle;

[0040] Figure 13 This is an exploded schematic diagram of the drum unit in Example 2 of the present utility model;

[0041] Figure 14 This is a schematic diagram of the drum unit in Example 2 of the present utility model from another angle;

[0042] Figure 15 This is a schematic diagram of the positioning portion in Example 2 of the present utility model when it is in the extended position;

[0043] Figure 16 This is a schematic diagram of the positioning portion in Example 2 of the present utility model when it is in the retracted position;

[0044] Figure 17 This is a schematic diagram of the process of installing the process cartridge to the imaging device in Example 3 of the present utility model;

[0045] Figure 18 It is a partially enlarged schematic diagram of the imaging device in Example 3 of the present utility model;

[0046] Figure 19 This is a schematic diagram of the processing box in Example 3 of the present utility model. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and technical effect of the embodiment of the present invention more clear, the technical solution of the process cartridge of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiment described is only a preferred embodiment of the present invention, not the only embodiment. Based on the embodiment of the present invention, other embodiments obtained by those skilled in the art without creative effort shall fall within the scope of protection of the present invention.

[0048] Example 1

[0049] In the following description, the photosensitive drum 121 is rotatable about a photosensitive drum axis extending in the left-right direction (hereinafter also referred to as the axial direction), and the coupling 122 is provided on the right side of the process cartridge 100 in the left-right direction.

[0050]

Overall structure of imaging equipment

[0051] like Figure 1 As shown, the imaging device 1 includes a mounting port 50 and a pair of side plates 20 respectively arranged at the left and right ends of the mounting port 50. A receiving portion 30 capable of receiving the processing cartridge 100 is formed between the pair of side plates 20. The processing cartridge 100 can be installed in the receiving portion 30 of the imaging device 1 along the mounting port 50 according to a predetermined track; the imaging device 1 also includes a driving member (not shown in the figure) that can receive the driving force of the motor to rotate and a power output member 10 that can rotate and move to the left under the drive of the driving member. The power output member 10 is movably arranged in the left and right directions in the imaging device 1. Specifically, the power output member 10 is driven by the driving member. , and can move in the left and right directions between a retracted position farther away from the processing box 100 and an extended position closer to the processing box 100. The power output member 10 in the extended position can be coupled with a coupling member 122 (described below) of the processing box 100 and can drive the coupling member 122 to rotate. Specifically, the power output member 10 includes a power output member recess 11 configured as a recess and power output member gear teeth 12 configured as helical teeth. The power output member recess 11 has a shape that is roughly an equilateral triangle, but is not a strict equilateral triangle. Instead, its three vertices (or corners) are beveled into arcs.

[0052] [Structure of the process cartridge]

[0053] like Figure 2-10As shown, the processing box 100 in embodiment 1 of the present invention will be described in detail below. The processing box 100 can be detachably installed in the above-mentioned imaging device 1. The processing box 100 includes a frame, which includes a developing frame 110 for accommodating developer and a drum frame 120 for accommodating waste developer; the processing box 100 also includes a developing roller 111 rotatably supported on the developing frame 110 and capable of carrying developer, and a photosensitive drum 121 rotatably supported on the drum frame 120 and capable of generating an electrostatic latent image, wherein the developing roller 111 can rotate around the developing roller axis extending in the left-right direction, and the photosensitive drum 121 can rotate around the photosensitive drum axis extending in the left-right direction. When the processing box 100 performs printing work, the developing roller 111 can rotate around the developing roller axis extending in the left-right direction. The developer carried on 11 can be transported to the photosensitive drum 121 for developing the electrostatic latent image on the photosensitive drum 121; the processing box 100 also includes a protrusion 130 protruding rightward from the right end of the drum frame 120, and a first electrode 131 at least partially arranged on the protrusion 130, the first electrode 131 can be electrically contacted with the imaging device 1 and can transfer electricity to a charging roller (not shown) that can charge the photosensitive drum 121; the processing box 100 also includes a second electrode 132 at least partially arranged at the right end of the developing frame 110, the second electrode 132 can be electrically contacted with the imaging device 1 and can transfer electricity to the developing roller 111, and when viewed along the left-right direction (i.e., the direction in which the axis of the photosensitive drum extends), a line passing through the first electrode 131 is formed. A line passes through the axis of the photosensitive drum and the axis of the developing roller, and the electrical connection surface of the first electrode 131 and the electrical connection surface of the second electrode 132 are arranged on both sides of the line; further, in order to avoid the power output member 10 from swinging radially in the extension process, which affects the normal coupling between the power output member 10 and the coupling member 122, the processing box 100 also includes a control portion 128 arranged at the right end of the drum frame 120. The control portion 128 can be used to control the movement of the power output member 10 and suppress the tilt of the power output member 10. The control portion 128 has an arcuate curved surface portion 128a, and the arcuate curved surface portion 128a is arranged to face the axis of the photosensitive drum. In other words, the control portion 128 can also be regarded as protruding to cover the photosensitive drum. The protruding part of the axis, this structure provides a space in which the components of the process cartridge 100 are not arranged between the control portion 128 and the axis of the photosensitive drum, and the power output member 10 is arranged in the space, and the control portion 128 also includes a limiting surface 128b located at its left end, and a positioning groove 171 is formed between the left end of the limiting surface 128b and the drum frame 120 in the left-right direction. During the process of installing the process cartridge 100 to the imaging device 1, a limiting rib 21 is formed on the side plate 20 on the right side of the imaging device 1 to protrude outward. During the process of installing the process cartridge 100 to the imaging device 1, the limiting rib 21 can be inserted into the positioning groove 171 of the process cartridge 100 to position the process cartridge 100 in the left-right direction;Furthermore, the processing box 100 also includes a positioning portion 126 arranged at the right end of the drum frame 120 and integrally formed with the drum frame 120, the positioning portion 126 includes a positioning recess 127 coaxially arranged with the photosensitive drum 121, and the positioning recess 127 is constructed as a cylindrical groove, which has a size and shape that matches the size and shape of the extended end of the power output member 10. After the power output member recess 11 of the power output member 10 is coupled with the coupling protrusion 122a of the coupling member 122, the positioning recess 127 can be used to suppress the radial swing of the power output member 10, thereby improving the coupling stability of the power output member 10 and the coupling member 122; the positioning portion 126 also includes a guide bevel 129 located at the right end of the positioning portion 126, and the guide bevel 129 intersects with the left and right directions. In the process of coupling the power output member 10 with the coupling member 122, the guide bevel 129 can guide the power output member 10 into the positioning recess 127, thereby improving the coupling success rate of the power output member 10 and the coupling member 122. ;

[0054] The processing box 100 also includes a flange 123 fixedly mounted on the right end of the photosensitive drum 121 and a coupling member 122 mounted on the flange 123 and capable of rotating with the flange 123 and the photosensitive drum 121. A portion of the coupling member 122 passes through an exposure hole 120a provided on the drum frame 120, so that a portion of the coupling member 122 is exposed outside the processing box 100 so that the coupling member 122 receives the driving force from the imaging device 1. The coupling member 122 includes a coupling protrusion 122a and a tooth portion 122b that are coaxially arranged with the photosensitive drum 121 and can rotate together, wherein the coupling protrusion 122a has a shape that is roughly an equilateral triangle, but it is not a strict equilateral triangle. Instead, its three vertices (or corners) are beveled into an arc shape. The coupling protrusion 122a can be coupled with the power output member recess 11, so that the coupling member 122 is driven Rotation, the coupling 122 can transmit the rotational driving force to the photosensitive drum 121 through the flange 123, and then the photosensitive drum 121 is driven to rotate; the tooth portion 122b has a plurality of gear teeth arranged at intervals in the rotation direction of the coupling 122. In the processing box 100, the tooth portion 122b can engage with the developing roller gear 143 installed at the right end of the developing roller 111, and the coupling 122 can transmit the rotational driving force to the developing roller 111 through the engagement of the tooth portion 122b with the developing roller gear 112, and then the developing roller 111 can be driven to rotate. That is to say, the processing box 100 in this embodiment can drive the photosensitive drum 121 and the developing roller 111 to rotate by only being provided with the coupling 122; preferably, the coupling protrusion 122a and the tooth portion 122b are an integrally formed structure, which helps to reduce the number of molds and reduce the production cost of the coupling 122.

[0055] Furthermore, the coupling member 122 can move in the left-right direction relative to the frame, that is, the coupling protrusion 122a and the tooth portion 122b can move together in the left-right direction relative to the photosensitive drum 121. Specifically, the coupling member 122 is provided with a plurality of limiting grooves 122c arranged at intervals around the rotation axis of the coupling member 122. As a matching, the flange 123 is provided with a plurality of limiting protrusions 123a arranged at intervals around the rotation axis of the flange 123. The limiting protrusions 123a extend in the left-right direction. The coupling member 122 is connected to the plurality of limiting protrusions 123a through the plurality of limiting grooves 122c. 23a is matched and installed so that it can be restricted in the radial direction to be installed on the flange 123, which allows the coupling member 122 to move between the extended position and the retracted position along the direction in which the limiting protrusion 123a extends (i.e., the left and right direction). The coupling member 122 in the extended position is at least a part farther away from the left end of the photosensitive drum 121 in the left and right directions relative to the coupling member 122 in the retracted position; and, based on the structure in which the limiting groove 122c and the limiting protrusion 123a cooperate with each other, the coupling member 123 can also drive the flange 123 and the photosensitive drum 121 to rotate together when rotating.

[0056] Furthermore, the gear teeth of the tooth portion 122b and the gear teeth of the developing roller gear 143 are both spur gear teeth (i.e., spur gear teeth), that is, the gear teeth of the tooth portion 122b and the gear teeth of the developing roller gear 143 are constructed to be parallel to their respective rotation axes. When the coupling 122 moves in the left and right directions, the movement resistance of the coupling 122 will be significantly reduced, thereby making the coupling 122 move more smoothly, avoiding the problem of interference and jamming between the coupling 122 and the developing roller gear 143 due to excessive resistance.

[0057] Furthermore, in the processing cartridge 100, the flange 123 is arranged to at least partially pass through the exposure hole 120a, so that the circumference of the right end of the coupling member 122 is positioned by the flange 123, so that the right end of the coupling member 122 (i.e., the end close to the coupling protrusion 122a) is stably positioned, thereby reducing the possibility of the right end of the coupling member 122 swinging and improving the coupling stability of the coupling member 122 and the power output member 10. In other words, the circumferential positioning of the coupling member 122 is achieved by the restriction of the flange 123. Therefore, the size of the exposure hole 120a is smaller than that of the prior art. The exposed hole in will be larger, and the diameter of the exposed hole 120a is defined as D, wherein 11.5mm<D<17.5mm. Within this range, the size of the exposed hole 120a is more appropriate, thereby avoiding the problem that when D is less than or equal to 11.5mm, the flange 123 will have no space to be inserted into the right end of the coupling 122, and it can also avoid when D is greater than or equal to 17.5mm, causing the exposed hole 120a to be too large, thereby causing the positioning recess 127 to be too large, and failing to effectively limit the power output member 10; preferably, 13mm<D<16mm.

[0058] Furthermore, in order to prevent the coupling 122 from detaching from the flange 123, the processing box 100 also includes a connecting portion 122d for connecting the coupling 122 and the flange 123; preferably, the connecting portion 122d is located on the left end portion of the coupling 122 and is integrally formed with the coupling 122, which helps to reduce the number of parts of the processing box 100 and reduce the assembly time of the processing box 100; optionally, the connecting portion 122d can also be located on the flange 123, which is not limited to this; preferably, the connecting portion 122d is an elastic buckle, and the coupling 122 can be fastened to the flange 123 by the elastic buckle. Relatively speaking, the elastic buckle structure is relatively simple, and it is also relatively easy to install the coupling 122 on or remove it from the flange 123. Therefore, the connecting portion 122d in this embodiment is preferably an elastic buckle structure.

[0059] Furthermore, an elastic member 124 is further provided between the coupling member 122 and the flange 123. Preferably, the elastic member 124 is a compression spring. When the coupling member 122 is not subjected to an external force, the elastic force generated by the elastic member 124 can keep the coupling member 122 in the extended position. When the coupling member 122 is pushed by an external force from right to left, the coupling member 122 can overcome the elastic force generated by the elastic member 124 and move from the extended position to the retracted position. Even if the coupling member 122 is in the retracted position at this time, the coupling member 122 is still subjected to the elastic urging force of the elastic member 124 from left to right. The elastic urging force applied to the coupling member 122 will cause the coupling member 122 to have a tendency to move toward the extended position. Therefore, after the external force from right to left is removed from the coupling member 122, the coupling member 122 will be reset from the retracted position to the extended position under the elastic force of the elastic member 124. Therefore, the coupling member 122 can still automatically reset after moving. The coupling member 122 is connected to an elastic member 124, which can keep the coupling member 122 in the extended position before the processing box 100 is installed on the imaging device 1. After the door cover of the imaging device 1 is closed, the power output member 10 of the imaging device 1 gradually extends to couple with the coupling member 122. The power output member 10 can push the coupling member 122 from right to left, so that the coupling member 122 overcomes the elastic force of the elastic member 124 and moves from the extended position to the retracted position. After the extension stroke of the power output member 10 reaches the maximum, the power output member 10 can be coupled with the coupling member 122. At this time, the coupling member 122 still has a tendency to move toward the side close to the power output member 10 under the elastic force of the elastic member 124. The elastic force member will keep the coupling member 122 and the power output member 10 stably coupled. On the one hand, it can prevent the coupling member 122 and the power output member 10 from disengaging during the coupling process. On the other hand, it can also reduce the relative position accuracy of the coupling member in the length direction of the photosensitive drum 121 to a certain extent.

[0060] Furthermore, when the coupling protrusion 122a is in the extended position, the distance between the right end face of the coupling protrusion 122a and the limiting surface 128b of the control portion 128 is P, wherein 1.5mm≦P≦5mm. Within this range, the coupling protrusion 122a is appropriately spaced from the power output member recess 11 and has the best coupling effect with the power output member recess 11. If P is less than 1.5mm, the coupling protrusion 122a may interfere with the imaging device 1 during the installation of the processing box 100 to the imaging device 1, resulting in the problem that the processing box 100 cannot be installed in the imaging device 1. If P is greater than 5mm, it may be too far away from the power output member recess 11 and cannot be coupled with the power output member recess 11. Therefore, within the above range, the coupling protrusion 122a and The power output member recess 11 has the best coupling effect with the power output member recess 11; further, 2mm≦P≦4mm; further, since the coupling protrusion 122a is retractable in the left and right directions, it has a certain retractable amount W, preferably, 0.5mm≦W≦3.5mm, and the retractable amount can be used to compensate for the deviation distance of the coupling protrusion 122a from the correct position in the left and right directions caused by the manufacturing error or installation error of the coupling protrusion 122a. When W is too small, the coupling protrusion 122a may have a problem of insufficient compensation distance of the retractable amount of the coupling protrusion 122a due to the excessive deviation distance. When W is too large, the coupling protrusion 122a will occupy too much internal space of the processing box 100 due to the excessive retractable stroke, which is not conducive to the miniaturization trend of the processing box.

[0061] Example 2

[0062] like Figure 11-16 As shown, a processing box 200 in embodiment 2 of the present invention is shown. The parts of the processing box 200 that are the same as those in the above-mentioned embodiment 1 will not be repeated in this embodiment 2. The difference is that the positioning part 226 of the processing box 200 can be moved in the left and right directions relative to the photosensitive drum 221.

[0063] Specifically, the positioning portion 226 in this embodiment also includes a positioning recess 227 and a guide slope 228, which are substantially the same as the structures of the positioning recess and the guide slope in the above embodiment and will not be described in detail here; however, the positioning portion 226 in this embodiment is separately arranged from the drum frame 220, and can move between an extended position and a retracted position in the left and right directions relative to the drum frame 220, and the positioning portion 226 in the extended position is at least partially further away from the left end of the photosensitive drum 221 relative to the positioning portion 226 in the retracted position, and when the positioning portion 226 is not subjected to external force, the positioning portion 226 is in the extended position; further, in order to prevent the positioning portion 226 from detaching from the drum frame 220, the positioning portion 226 also includes a member for connecting To the connecting portion 229 on the drum frame 220; preferably, the connecting portion 229 is located on the left end portion of the positioning portion 226 and is integrally formed with the positioning portion 226, which helps to reduce the number of parts of the processing box 200 and reduce the assembly time of the processing box 200; optionally, the connecting portion 229 can also be located on the drum frame 220, which is not limited to this; preferably, the connecting portion 229 is an elastic buckle, and the positioning portion 226 can be fastened to the positioning surface 221 of the drum frame 220 through the elastic buckle. Relatively speaking, the elastic buckle structure is relatively simple, and it is also relatively easy to install the positioning portion 226 on the drum frame 220 or remove it from the drum frame 220. Therefore, the connecting portion 229 in this embodiment is preferably an elastic buckle structure.

[0064] Furthermore, an elastic member 224 is provided between the positioning portion 226 and the drum frame 220. Preferably, the elastic member 224 is a compression spring. When the positioning portion 226 is not subjected to an external force, the elastic force generated by the elastic member 224 can keep the positioning portion 226 in the extended position, and can engage with the power output member 10 in advance. When the positioning portion 226 is pushed by an external force from right to left, the positioning portion 226 can overcome the elastic force generated by the elastic member 224 and move from the extended position to the retracted position. Even at this time The positioning portion 226 is in the retracted position, but the positioning portion 226 is still subject to the elastic urging force of the elastic member 224 from left to right. The elastic urging force applied to the positioning portion 226 will cause the positioning portion 226 to have a tendency to move toward the extended position. Therefore, after the external force from right to left is removed from the positioning portion 226, the positioning portion 226 will be reset from the retracted position to the extended position under the elastic force of the elastic member 224. Therefore, the positioning portion 226 can still automatically reset after moving. By connecting the elastic member 224 to the positioning portion 226, the positioning portion 226 can be maintained in the extended position before the processing box 200 is installed on the imaging device 1. After the door cover of the imaging device 1 is closed, the power output member 10 of the imaging device 1 gradually extends to contact the positioning portion 226 and is positioned by it. Then, the left end face of the power output member 10 can push the bottom end face of the positioning recess 227 of the positioning portion 226 from right to left, so that the positioning portion 226 overcomes the elastic force of the elastic member 224 and moves from the extended position to the retracted position. After the extension stroke of the power output member 10 reaches the maximum, the power output member 10 can be coupled to the coupling member 222. At this time, the positioning portion 226 still has a tendency to move toward the side close to the power output member 10 under the elastic force of the elastic member 224. The elastic force member will keep the positioning recess 227 of the positioning portion 226 stably engaged with the power output member 10, which can reduce the radial swing amount of the power output member 10 to a certain extent, thereby suppressing the swing of the power output member 10.

[0065] Furthermore, when the positioning portion 226 is in the extended position, the distance between the right end face of the positioning portion 226 and the limiting surface 228b of the control portion 228 is K, wherein 1.5mm≦K≦4.5mm. Within this range, the positioning portion 226 extends a suitable distance and has the best engagement effect with the power output member 10. If K is less than 1.5mm, the positioning portion 226 may interfere with the imaging device 1 during the installation of the processing cartridge 200 to the imaging device 1, thereby causing the processing cartridge 200 to be unable to be installed in the imaging device 1. If K is greater than 4.5 mm, it may be too far from the power output member 10 to effectively guide and position the positioning member 226 in advance. Therefore, when P is within the above range, the positioning portion 226 and the power output member 10 have the best engagement effect. Furthermore, 2 mm ≤ K ≤ 3.5 mm. Furthermore, since the positioning portion 226 can be extended in the left and right directions, it has a certain amount of expansion and contraction W, preferably 0.5 mm ≤ V ≤ 2.5 mm, which can be used to maintain stable engagement between the positioning portion 226 and the power output member 10. More preferably, 0.85 mm ≤ V ≤ 1.5 mm.

[0066] Therefore, as a preferred embodiment, the coupling member 222 in this embodiment is arranged to be fixedly installed on one end of the photosensitive drum 221 in the left-right direction to simplify the structure of the processing box 200.

[0067] Example 3

[0068] like Figure 17-19 As shown, Example 3 of the present invention will be introduced next. Example 3 provides an imaging device 1 and a processing box 300 different from those in the above-mentioned Examples 1-2. The power output member 10 of the imaging device 1 is tiltable. Specifically, when the processing box 300 is not installed in the imaging device 1, the rotation axis of the power output member 10 is tilted relative to the left and right directions and is in an inclined position. When the processing box 300 is installed in the imaging device 1 and the imaging device 1 is in operation, the rotation axis of the power output member 10 is parallel to the left and right directions and is in a straightening position; correspondingly, the processing box 300 is different from the above-mentioned Examples 1-2 in that the control part 328 is movable relative to the photosensitive drum 321, that is, in a direction perpendicular to the axis of the photosensitive drum, the control part 328 can move between a first position close to the axis of the photosensitive drum and a second position away from the axis of the photosensitive drum to adjust the power output member 10 from the tilted position to the straightening position.

[0069] The imaging device 1 also includes a cover portion 40 arranged on the side panel 20 and capable of covering at least a portion of the power output member 10, the cover portion 40 being provided with a first exposure hole 41, a second exposure hole 42 and a third exposure hole 43 having different exposure directions, the exposure direction of the first exposure hole 41 being intersected with the exposure directions of the second exposure hole 42 and the third exposure hole 43, wherein the first exposure hole 41 can be used to expose the power output member recess 11 to allow it to be coupled with the coupling protrusion 322a of the processing box 300, while the second exposure hole 42 and the third exposure hole 43 both expose the power output member gear teeth 12, and the second exposure hole 42 is configured to allow the movable control portion 328 to enter so as to adjust the power output member 10 from the tilted position to the straightening position.

[0070] Moreover, the electrical connection surface of the first electrode (not shown) and the electrical connection surface of the second electrode of the processing box 300 in this embodiment are both arranged at the left end of the frame, that is, in the left and right directions, the electrical connection surface of the first electrode (not shown), the electrical connection surface of the second electrode and the coupling 322 are respectively arranged on different sides of the frame.

[0071] It should be noted that the coupling member 322 in this embodiment can still move in the left-right direction relative to the photosensitive drum 321, the coupling protrusion 322a and the coupling gear 322b can still move together in the left-right direction relative to the photosensitive drum 321, and the positioning portion 326 can also be constructed to move in the left-right direction relative to the photosensitive drum 322. Therefore, this embodiment will not be repeated.

[0072] Beneficial effects

[0073] On the one hand, the present invention arranges the coupling member into an elastically telescopic movable structure, and the telescopic movable travel distance of the coupling member can be used to compensate for the deviation distance of the coupling member from the correct position in the left and right directions caused by the manufacturing error or installation error of the coupling member; on the other hand, by arranging the positioning part into an elastically telescopic movable structure, the positioning part can be extended further outward for a distance, and can be limited in advance during the extension process of the power output member; this can improve the coupling success rate and coupling stability of the coupling member and the power output member of the imaging device.

[0074] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A process cartridge, detachably mounted in an imaging device having a power output member, comprising: frame; a developing roller rotatably supported on the frame; A photosensitive drum is rotatably supported on the frame and is rotatable about a photosensitive drum axis extending in the left-right direction; A flange is mounted on the right end of the photosensitive drum in the left-right direction and can rotate along with the photosensitive drum; a coupling member, mounted on the flange, capable of receiving the driving force output by the power output member and transmitting the driving force to the developing roller and the photosensitive drum; a control portion, disposed at a right end of the frame in the left-right direction and configured to control the power output member to suppress tilting of the power output member; It is characterized in that the coupling member can move in the left and right directions relative to the photosensitive drum, and the coupling member includes a coupling protrusion that can be coupled with the power output member and a tooth portion arranged coaxially with the photosensitive drum, and the tooth portion can rotate in response to the rotation of the coupling protrusion, and the coupling protrusion and the tooth portion are fixedly connected.

2. The process cartridge according to claim 1, wherein The coupling protrusion and the tooth portion are integrally formed.

3. The process cartridge according to claim 1, wherein One of the coupling member and the flange is provided with a limiting groove extending in the left-right direction, and the other of the coupling member and the flange is provided with a limiting protrusion extending in the left-right direction, and the limiting protrusion can be inserted into the limiting groove to limit the position of the coupling member in a direction intersecting the left-right direction.

4. The process cartridge according to claim 1, wherein An elastic member is provided between the coupling member and the flange.

5. The process cartridge according to claim 1, wherein The tooth portion is a spur gear.

6. The process cartridge according to claim 1, wherein The frame is provided with an exposing hole for the coupling member to pass through and for exposing the coupling protrusion to the outside of the processing box. The diameter of the exposing hole is D, wherein 11.5 mm < D < 17.5 mm.

7. The process cartridge according to claim 1, wherein The coupling member has an extended position and a retracted position in the left and right directions. At least a portion of the coupling member in the extended position is farther away from the left end of the photosensitive drum than the coupling member in the retracted position. When the coupling member is not subjected to external force, the coupling member is in the extended position. When the coupling member is in the extended position, the distance between the right end surface of the coupling protrusion and the left end surface of the control portion is P, wherein 1.5mm≦P≦5mm.

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