Driving force receiving part, photosensitive drum assembly and processing box

Abstract

The utility model provides a driving force receiving piece, a photosensitive drum assembly and a processing box, the driving force receiving piece comprises a base, one end of the base is provided with a convex column, and the axial end of the convex column is provided with a positioning hole; at least one blocking part and at least one rib are arranged on the periphery of the convex column, the number of the blocking part is equal to that of the rib, a driving force receiving surface is formed on the first side of the rib in the circumferential direction of the base, and a braking force receiving surface is formed on the second side of the rib; gaps are formed between the blocking parts and the adjacent ribs on the periphery of the protruding column in the circumferential direction of the base. The driving force receiving piece is arranged at the end part of the photosensitive drum assembly. The processing box is provided with the photosensitive drum assembly. The driving force receiving piece is simple in structure, does not need to be assembled, is low in production cost, and can be reliably meshed with the driving force output device.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic imaging, in particular to a driving force receiving component and a photosensitive drum component and a processing box having the driving force receiving component. Background Art

[0002] Printers are common office equipment. Common printers include inkjet printers and laser printers. Inkjet printers use ink cartridges as consumable containers to spray ink onto paper or other printing media to form text or patterns on the paper. Laser printers use process cartridges as consumable containers to form text or patterns on paper or other printing media through electronic imaging.

[0003] Conventional process cartridges are equipped with components such as a developing roller, a charging roller, and a photosensitive drum. These components are rotatably supported at both ends of the process cartridge housing. When a laser printer is operating, these components need to be driven to rotate. To achieve this, a driving force output device is provided within the laser printer, and a driving force receiving member is provided at the end of the photosensitive drum. When the photosensitive drum is installed in the laser printer, the driving force receiving member cooperates with the driving force output device, causing the laser printer's driving force output device to rotate, thereby driving the driving force receiving member of the process cartridge to rotate.

[0004] See also Figures 1 to 4 The driving force output device of an existing laser printer includes a sleeve 10. The sleeve 10 includes a hollow cylindrical body 11. A plate 12 is provided at one end of the body 11. A driving member 20 is provided near the open end of the body 11. The driving member 20 has a driving force transmission surface 21. On the end surface of the sleeve 10, the driving member 20 is provided with an abutment surface 23, and an inclined surface 22 is formed between the abutment surface 23 and the driving force transmission surface 21. In addition, a limiting rod 14 is also provided on the open end of the sleeve 10. The driving member 20 is used to apply a driving force to the driving force receiving member of the photosensitive drum, driving the driving force receiving member to rotate. However, after the photosensitive drum rotates and the driving force output device stops rotating, the driving force receiving member may continue to rotate due to inertia, resulting in the photosensitive drum failing to stay in the desired position. Therefore, it is necessary to apply a braking force to the driving force receiving member so that the driving force receiving member stops rotating under the action of the braking force.

[0005] Braking members 50 and 51 are also mounted within the sleeve 10, with the brake component 30 positioned near the open end of the sleeve 10. A braking force transmission member 40 is positioned between the braking members 50 and 51 and the brake component 30. The braking members 50 and 51 are positioned near the end of the plate 12. The braking force transmission member 40 includes a rod 41, the distal end of which is inserted into the braking member 51. Rotation of the braking member 51 drives the braking force transmission member 40 to rotate. A spring 45 is also mounted on the outer sleeve of the rod 41.

[0006] The brake component 30 is disposed at the end of the braking force transmission member 40 away from the brake member 50. A spring 38 is disposed between the brake component 30 and the brake member 51. The outer diameter of the spring 38 is larger than that of the spring 45, and therefore, the spring 38 is located radially outward of the spring 45. The brake component 30 is provided with a base 31, on which are formed two sets of brake pawls 33. The brake pawls 33 have an inclined braking force transmission surface 34. The braking force transmission surface 34 can output braking force to the driving force receiving member to limit the rotation of the driving force receiving member. In addition, the brake pawls 33 are provided with a braking protrusion 36 on the radially inner side of the sleeve 10.

[0007] The existing driving force receiving member has a coupling, and the coupling is provided with a structure that cooperates with the driving force transmission surface 21 and the braking force transmission surface 34, so that the driving force receiving member can receive the driving force and braking force output by the driving force output device. However, the brake claw 33 of the braking component 30 of the existing driving force output device is relatively thin. If the driving force receiving member is directly engaged with the driving force output device, it is easy for the brake claw 33 to be damaged during the engagement process. In addition, since the brake claw 33 and the driving force receiving member on the photosensitive drum assembly are both rigid parts, when the driving force output device is engaged with the driving force receiving member, the brake claw 33 directly contacts the rigid engagement structure, which is more likely to cause damage to the brake claw 33. Once the brake claw 33 is damaged, the driving force output device will be unable to accurately control the photosensitive drum assembly at a specific position, affecting the operation of the laser printer.

[0008] The invention patent application with publication number CN118567206A discloses a driving force receiving assembly, which is provided with a coupling and a movable part, and an extrusion block is provided on the coupling. When the processing box is installed on the laser printer, the two braking protrusions on the braking claw of the driving force output device can abut against the extrusion part on the extrusion block, so that the braking component of the driving force output device rotates relative to the sleeve, so that the gap between the braking claw and the driving component increases, so that the force receiving part of the movable part can be smoothly inserted into the gap between the braking claw of the driving force receiving part and the driving component, thereby realizing the engagement of the driving force receiving assembly with the driving force output device.

[0009] However, this driving force receiving assembly has a complex structure, uses many parts, requires high assembly precision, and has high production costs. Utility Model Content

[0010] The first object of the present utility model is to provide a driving force receiving member which has a simple structure, low production cost and can effectively engage with a driving force output device.

[0011] The second purpose of the utility model is to provide a photosensitive drum assembly with the driving force receiving piece.

[0012] The third purpose of the utility model is to provide a process cartridge with the photosensitive drum assembly.

[0013] To realize the first purpose of the utility model, the driving force receiving piece comprises a base, one end of the base is formed with a protruding column, the axial end of the protruding column is provided with a positioning hole; at least one blocking part and at least one rib are arranged on the outer periphery of the protruding column, the number of the blocking part is equal to that of the rib, along the circumference of the base, the first side of the rib forms a driving force receiving surface, and the second side of the rib forms a braking force receiving surface; along the circumference of the base, a gap is formed between the blocking part and the adjacent rib on the outer periphery of the protruding column.

[0014] As can be seen from the above scheme, the driving force receiving piece is provided with the blocking part and the rib on the outer periphery of the protruding column, and the gap is formed between the blocking part and the rib, when the process cartridge is installed to the laser printer, the rib can be inserted into the gap between the driving member and the brake pawl. With the driving force output device of the laser printer starting to rotate around its own axis, the gap between the driving member and the brake pawl increases, the brake pawl can pass through the gap between the blocking part and the rib and abut against the rib, so that the engagement between the driving force receiving piece and the driving force output device is realized. Since the driving force receiving piece does not need to be provided with a movable part, but is an integral structure, the structure is simple, and assembly is not needed, so the production cost is low.

[0015] In addition, if the rib does not face the gap between the driving member and the brake pawl when the process cartridge is installed to the laser printer, the brake pawl will abut against the blocking part to prevent the driving force output device from continuing to extend, so that the situation that the driving force output device cannot be correctly engaged with the driving force receiving piece and the driving force output device is damaged is avoided. After the driving force output device continues to rotate, when the rib does not face the gap between the driving member and the brake pawl, the rib will be inserted into the gap between the driving member and the brake pawl, so that the engagement between the driving force output device and the driving force receiving piece is completed.

[0016] One preferred scheme is that the blocking part is arranged at the end of the protruding column away from the base, and the blocking part extends along the circumference of the protruding column; the second side of the rib is formed with a limiting plane; along the circumference of the protruding column, the central angle formed between the end face of the blocking part close to the limiting plane and the limiting plane of the adjacent rib is between 42° and 55°; and / or the distance between the limiting plane and the driving force receiving surface is between 1.1 mm and 1.9 mm.

[0017] It can be seen that by setting the central angle formed between the end face of the blocking part close to the limiting plane and the limiting plane of the adjacent rib to a specific angle, the braking claw can smoothly pass through the gap between the blocking part and the rib, thereby improving the reliability of the engagement between the driving force output device and the driving force receiving component.

[0018] A further solution is that there are two blocking parts and two ribs, the two blocking parts are symmetrically arranged on the outer periphery of the boss, and the two ribs are symmetrically arranged on the outer periphery of the boss; along the circumference of the boss, the two blocking parts and the two ribs are staggered and arranged at intervals.

[0019] It can be seen that by setting two sets of matching structures of blocking parts and ribs, the number is equal to the matching structures of two sets of driving components and brake claws of the driving force output device, which meets the matching requirements of the driving force output device and the driving force receiving component.

[0020] A further solution is that the radial outer edges of the two blocking portions at the base are both arc surfaces, and the radial length of the radial outer edges of the two blocking portions is between 8 mm and 11.2 mm.

[0021] It can be seen that the radial lengths of the radial outer edges of the two blocking portions are set to specific values, which match the sizes of the brake pawl and the sleeve, and can meet the requirement that the blocking portions block the brake pawl.

[0022] A further solution is that an insertion portion is provided at one end of the rib away from the base, and the width of the insertion portion gradually decreases from close to the base to away from the base.

[0023] It can be seen that since the width of the rib near the end of the driving force output device is smaller, it is convenient for the rib to be inserted into the gap between the driving component and the brake pawl.

[0024] A further solution is that both the driving force receiving surface and the braking force receiving surface are closer to the base than the insertion portion.

[0025] A further solution is that the width of the end face of the insertion portion farthest from the base is between 0.4 mm and 1 mm; and / or the insertion portion has a first surface formed on the first side of the rib, and the angle between the first surface and the surface of the insertion portion farthest from the base is between 105° and 135°.

[0026] It can be seen that the width of the end surface of the insertion portion farthest from the base is relatively small, which can facilitate the smooth insertion of the rib into the gap between the driving member and the brake claw.

[0027] A further solution is that a support frame is provided on the base, a base surface is formed at one end of the support frame away from the base, and a convex column is formed on the base surface; the angle between the braking force receiving surface and the base surface is between 30° and 60°; and / or the distance between the end surface of the driving force receiving surface away from the base and the base surface is 3 mm to 4.3 mm.

[0028] Therefore, the angle between the braking force receiving surface and the base surface is between 30° and 60°, which is beneficial to the cooperation between the braking force receiving surface and the braking claw, and the driving force receiving piece can well receive the braking force output by the driving force output device.

[0029] To achieve the second purpose, the photosensitive drum assembly comprises a main body part, and one end of the main body part is provided with the driving force receiving piece.

[0030] To achieve the third purpose, the processing cartridge comprises a cartridge body, the cartridge body has two end covers, the cartridge body is provided with the photosensitive drum assembly, and the photosensitive drum assembly is supported between the end covers. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structural diagram of the driving force output device of the laser printer.

[0032] Figure 2 is a structural exploded view of the driving force output device of the laser printer.

[0033] Figure 3 is a structural diagram of the driving force output device of the laser printer from another perspective.

[0034] Figure 4 is a structural exploded view of the driving force output device of the laser printer from another perspective.

[0035] Figure 5 is a structural diagram of the processing cartridge embodiment of the utility model.

[0036] Figure 6 is a structural diagram of the driving force receiving piece embodiment of the utility model from a first perspective.

[0037] Figure 7 is a structural diagram of the driving force receiving piece embodiment of the utility model from a second perspective.

[0038] Figure 8 is a structural diagram of the driving force receiving piece embodiment of the utility model from a third perspective.

[0039] Figure 9 is a structural diagram of the driving force receiving piece embodiment of the utility model from a fourth perspective.

[0040] Figure 10 is a partial enlarged view of the driving force receiving piece embodiment of the utility model.

[0041] Figure 11 is a partial enlarged view of the driving force receiving piece embodiment of the utility model.

[0042] Figure 12This is a structural diagram of the driving force receiving member embodiment of the utility model and the driving force output device in the first assembly stage.

[0043] Figure 13 This is a structural diagram of an embodiment of the driving force receiving member of the utility model in the first assembly stage with the driving force output device hiding the sleeve.

[0044] Figure 14 This is a structural diagram of the driving force receiving member embodiment of the utility model and the driving force output device in the second assembly stage.

[0045] Figure 15 yes Figure 14 A partial enlarged view of .

[0046] Figure 16 It is a structural diagram of the driving force receiving member embodiment of the utility model and the driving force output device in the third assembly stage.

[0047] Figure 17 yes Figure 16 A partial enlarged view of .

[0048] Figure 18 This is a structural diagram of the driving force receiving member embodiment of the utility model and the braking component in the third assembly stage.

[0049] Figure 19 It is a structural diagram of the driving force receiving member embodiment of the utility model and the driving force output device in the fourth assembly stage.

[0050] Figure 20 yes Figure 19 A partial enlarged view of .

[0051] Figure 21 This is a structural diagram of the driving force receiving member embodiment of the utility model and the braking component in the fourth assembly stage.

[0052] Figure 22 It is a structural diagram of the driving force receiving member embodiment of the utility model and the driving force output device in the fifth assembly stage.

[0053] Figure 23 This is a structural diagram of the driving force receiving member embodiment of the utility model and the braking component in the fifth assembly stage.

[0054] Figure 24 This is a structural diagram of the driving force receiving member embodiment of the utility model and the braking component in the sixth assembly stage.

[0055] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0056] The processing box of the present invention can be detachably installed in a laser printer. The processing box contains toner as a printing consumable. A photosensitive drum assembly is arranged in the processing box, and a driving force receiving member is arranged at the end of the photosensitive drum assembly. The driving force receiving member of this embodiment is used to receive the driving force and braking force output by the laser printer, thereby driving the photosensitive drum assembly to rotate, so that the photosensitive drum assembly rotates to the desired position.

[0057] See also Figure 5 The process cartridge 100 of this embodiment is removably mounted on a laser printer. Preferably, the laser printer is provided with one or more process cartridge accommodating chambers, and each process cartridge 100 is mounted in a process cartridge accommodating chamber. The process cartridge 100 comprises a housing, with two end caps 101 and 102 disposed at each end of the housing. A photosensitive drum assembly 105 is rotatably supported between the two end caps 101 and 102. The photosensitive drum assembly 105 comprises a cylindrical photosensitive drum core shaft, one end of which is open, forming a accommodating chamber at the open end, and a driving force receiving member is mounted in the accommodating chamber.

[0058] See also Figures 6 to 11 The driving force receiving member 110 has a base 111. A support frame 112 is provided at a first axial end of the base 111. The surface of the support frame 112 away from the base 111 is a base surface 113. A boss 120 is formed on the support frame 112. In this embodiment, the boss 120 is an annular column. A positioning hole 121 is provided at the axial end of the boss 120. Preferably, the positioning hole 121 is a through hole that passes through the axial direction of the boss 120.

[0059] Two blocking portions 125, 126 and two ribs 130, 160 are provided on the outer circumference of the boss 120. The blocking portions 125, 126 are symmetrically arranged around the circumference of the boss 120, and the ribs 130, 160 are also symmetrically arranged around the circumference of the boss 120. Furthermore, the blocking portions 125, 126 and the ribs 130, 160 are staggered and spaced apart around the circumference of the boss 120, with the rib 130 located between the blocking portions 125, 126, and the blocking portion 125 located between the ribs 130, 160.

[0060] The two blocking portions 125 and 126 have the same shape, and both extend radially along the outer peripheral wall of the boss 120. Each blocking portion 125 and 126 extends along the circumference of the boss 120, and the central angle of each blocking portion 125 and 126 relative to the axis of the boss 120 does not exceed 150°. In addition, the two blocking portions 125 and 126 are both arranged at the end of the boss 120 away from the base 111, that is, at a position close to the upper end of the boss 120. Moreover, the blocking portion 125 is roughly arc-shaped, and the radial outer edges of the blocking portion 125 at the base 111 are both arc surfaces 127, and the radial outer edges of the blocking portion 126 at the base 111 are both arc surfaces 128, and the arc surfaces 127 and 128 are on the same circumference. Figure 9 As shown, the distance D1 between the arcuate surface 127 of the blocking portion 125 and the arcuate surface 128 of the blocking portion 126 is between 8 mm and 11.2 mm, that is, the radial length of the radial outer edges of the blocking portions 125 and 126 is between 8 mm and 11.2 mm, preferably between 8 mm and 9 mm, and more preferably 8.6 mm. By setting the radial length of the radial outer edges of the two blocking portions 125 and 126, the blocking portions 125 and 126 can effectively limit the brake pawl 33.

[0061] The structure of the rib 130 is the same as that of the rib 160. The following description will take the rib 130 as an example. The rib 130 extends radially from the outer peripheral wall of the boss 120, and the lower end of the rib 130 is connected to the base surface 113. An insertion portion 135 is formed at the end of the rib 130 away from the base 111. The insertion portion 135 is in a table shape. Specifically, the width of the insertion portion 135 gradually decreases from the direction close to the base 111 to the direction away from the base 111, and as shown in FIG. Figure 10 As shown, the width L1 of the top surface of the insertion portion 135 , that is, the surface 131 of the insertion portion 135 farthest from the base 111 , is between 0.4 mm and 1 mm. Preferably, the width L1 is 0.4 mm.

[0062] The rib 130 is provided with a driving force receiving surface 141 and a braking force receiving surface 142 near the base surface 113. Along the circumference of the base 111, the driving force receiving surface 141 is provided on the first side of the rib 130, and the braking force receiving surface 142 is provided on the second side of the rib 130. Moreover, the driving force receiving surface 141 and the braking force receiving surface 142 are both closer to the base 111 than the insertion portion 135.

[0063] On the one hand, the normal direction of the driving force receiving surface 141 is perpendicular to the axis of the base 111. In other words, the normal direction of the driving force receiving surface 141 is the same as the normal direction of the driving force transmitting surface 21 of the driving force output device. When the driving force receiving member 110 is engaged with the driving force output device, the driving force receiving surface 141 cooperates with the driving force transmitting surface 21, so that the driving force transmitting surface 21 applies a driving force to the driving force receiving surface 141, driving the driving force receiving member 110 to rotate.

[0064] On the other hand, a brake pawl accommodating cavity 137 is formed between the braking force receiving surface 142 and the base surface 113, and the brake pawl 33 of the driving force output device can be inserted into the brake pawl accommodating cavity 137. Figure 10 As shown, the angle β between the braking force receiving surface 142 and the base surface 113 is between 30° and 60°, preferably 39.5°, and less preferably 54°. In addition, the normal direction of the braking force receiving surface 142 is inclined to the axis of the driving force receiving member 110. Preferably, the normal direction of the braking force receiving surface 142 is the same as the normal direction of the braking force transmitting surface 34 of the brake claw 33 of the driving force output device. When the driving force receiving member 110 is engaged with the driving force output device, the braking force receiving surface 142 cooperates with the braking force transmitting surface 34, and the braking force transmitting surface 34 applies a braking force to the braking force receiving surface 142, thereby limiting the rotation of the driving force receiving member 110, so that the driving force receiving member 110 can stay in the desired position, thereby controlling the rotation angle of the photosensitive drum assembly.

[0065] In addition, a gap 150 is formed between the rib 130 and the adjacent blocking portion 125, and a second side of the rib 130 forms a limited position plane 138, as shown in FIG. Figure 9 As shown, along the circumference of the boss 120 , the central angle α formed between the end surface 129 of the blocking portion 125 close to the limiting plane 138 and the limiting plane 138 of the adjacent rib 130 is between 42° and 55°. Preferably, the central angle α is 52°.

[0066] See also Figure 10 The distance L3 between the end surface of the driving force receiving surface 141 away from the base 111 and the base surface 113 is 3 mm to 4.3 mm, preferably, the distance L3 is 3.8 mm. Figure 11 As shown, the distance L2 between the limiting plane 138 and the driving force receiving surface 141 is between 1.1 mm and 1.9 mm, preferably, 1.7 mm. Distance L2 can also be considered the thickness of the rib 130. The insertion portion 135 has a first surface 136 formed on a first side of the rib 130. The angle γ between the first surface 136 and the surface 132 of the insertion portion 135 away from the base 111 is between 105° and 135°, preferably, 115°.

[0067] The following describes the process of engagement of the driving force receiving member 110 with the driving force output device of the laser printer during the process of installing the processing box 100 into the laser printer. Before the driving force receiving member 110 is engaged with the driving force output device, the driving force receiving member 110 is not restricted by the driving force or braking force and can rotate freely around its own axis. When the processing box 100 is installed in the laser printer, the driving force receiving member 110 first moves axially relative to the driving force output device, that is, the driving force receiving member 110 gradually approaches the driving force output device of the laser printer along the axial direction. When the driving force receiving member 110 approaches the driving force output device, the limiting rod 14 of the driving force output device first slides into the positioning hole 121 of the boss 120 to achieve preliminary positioning of the driving force output device and the driving force receiving member 110. At this time, the end of the driving force receiving member 110 will abut against the open end of the driving force output device, such as Figure 12 shown.

[0068] If the rib 130 of the driving force receiving member 110 does not face the gap between the driving member 20 of the driving force output device and the brake claw 33, the brake claw 33 will abut against the blocking portions 125 and 126 of the driving force receiving member 110. Figure 13 At this time, the blocking portions 125 and 126 can prevent the driving force output device from extending further, which would cause the driving force receiving member 110 to be unable to engage with the driving force output device of the laser printer, thereby avoiding damage to the driving force receiving member 110 due to the driving force receiving member 110 being unable to engage with the driving force output device of the laser printer.

[0069] Subsequently, the driving force output device of the laser printer begins to rotate around its own axis, but since the driving force receiving member 110 and the driving force output device are only preliminarily positioned but not engaged, the driving force output device and the driving force receiving member 110 can rotate relative to each other, and therefore, the braking claw 33 of the braking component 30 can rotate relative to the driving force receiving member 110.

[0070] As the driving force output device rotates, the gap between the driving member 20 of the driving force output device and the brake claw 33 will rotate to a position facing the insertion portion 135 of the rib 130, as shown in FIG. Figure 14 and Figure 15 As shown, since the width of the end of the insertion portion 135 close to the driving force output device is smaller, it is convenient for the insertion portion 135 to be inserted into the gap between the driving member 20 and the brake claw 33 .

[0071] Then, the driving force output device continues to rotate, and the driving force output device also moves further in the axial direction toward the driving force receiving member 100, as shown in FIG. Figures 16 to 18As shown, the rib 130 is inserted into the gap between the driving member 20 and the brake pawl 33 , and the insertion portion 135 continuously moves toward the driving force output device, and the rib 130 blocks the rotation of the brake pawl 33 .

[0072] As the driving force output device continues to rotate, Figures 19 to 21 As shown, the insertion portion 135 continuously moves toward the driving force output device, and the rib 130 hinders the rotation of the brake claw 33, so that the gap between the driving member 20 and the brake claw 33 gradually increases.

[0073] When the driving force output device further moves in the radial direction toward the driving force receiving member 110, as shown in FIG. Figure 22 and Figure 23 As shown, the lower end surface of the brake claw 33 will abut against the base surface 113. At this time, the brake claw 33 will not move further toward the driving member receiving member 110, but the brake claw 33 can continue to rotate. Since the brake claw 33 is facing the brake claw accommodating cavity 137, when the brake claw 33 continues to rotate, as shown in FIG. Figure 24 As shown, the brake pawl 33 is inserted into the brake pawl accommodating cavity 137 , and at this time, the brake pawl 33 abuts against the braking force receiving surface 142 .

[0074] In this embodiment, the outer contour of the brake pawl accommodating cavity 137 is the same as the outer contour of the brake pawl 33, so that the braking force transmitting surface 34 and the braking force receiving surface 142 are tightly fitted. In this way, when the brake pawl 33 applies braking force to the rib 130, the braking force transmitting surface 34 abuts against the braking force receiving surface 142, so that the braking force receiving surface 142 can fully receive the braking force output by the brake pawl 33.

[0075] Similarly, since the normal direction of the driving force receiving surface 141 is the same as the normal direction of the driving force transmitting surface 21 of the driving force output device, after the driving force receiving member 110 is engaged with the driving force output device, the driving force receiving surface 141 abuts against the driving force transmitting surface 21, so that the driving force transmitting surface 21 applies driving force to the driving force receiving surface 141 to drive the driving force receiving member 110 to rotate.

[0076] Because the driving force receiving member of the present invention is an integrally injection-molded component, it does not require assembly and can be directly mounted on one end of the photosensitive drum core shaft. This makes assembly of the photosensitive drum assembly very simple, and the driving force receiving member has a simple structure and low production costs. Furthermore, the ribs of the driving force receiving member are provided with a driving force receiving surface and a braking force receiving surface, which can respectively mate with the driving member and the brake pawl of the driving force output device, thereby receiving the driving force and braking force output by the driving force output device, allowing the photosensitive drum assembly to rotate under the action of the driving force and braking force output by the driving force output device, and allowing the photosensitive drum to rotate to a set position.

[0077] Furthermore, because the rib is provided with an insertion portion, and the insertion portion is narrower at the end closest to the driving force output device, it facilitates insertion of the insertion portion into the gap between the driving member and the brake pawl, thereby ensuring smoother engagement of the driving force receiving member with the driving force output device. Furthermore, a blocking portion is provided on the boss. When the insertion portion is not directly facing the gap between the driving member and the brake pawl, the blocking action of the blocking portion prevents the driving force receiving member from extending into the driving force output device and potentially damaging the driving force receiving member. This ensures that the insertion portion directly faces the gap between the driving member and the brake pawl during engagement, thereby improving the accuracy and success rate of engagement between the driving force receiving member and the driving force output device.

[0078] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Driving force receiving member, including: A base, wherein a boss is formed at one end of the base, and a positioning hole is provided at the axial end of the boss; Its characteristics are: The outer periphery of the boss is provided with at least one blocking portion and at least one rib, the number of the blocking portions is equal to the number of the ribs, and along the circumference of the base, a first side of the rib forms a driving force receiving surface, and a second side of the rib forms a braking force receiving surface; Along the circumference of the base, a gap is formed between the blocking portion and the adjacent ribs on the outer periphery of the boss.

2. The driving force receiving member according to claim 1, wherein: The blocking portion is provided at an end of the boss away from the base, and the blocking portion extends along the circumference of the boss; The second side of the rib forms a finite plane; Along the circumference of the boss, a central angle formed between an end surface of the blocking portion close to the limiting plane and the limiting plane of the adjacent rib is between 42° and 55°; and / or The distance between the limiting plane and the driving force receiving surface is between 1.1 mm and 1.9 mm.

3. The driving force receiving member according to claim 1, wherein: There are two blocking portions and two ribs, and the two blocking portions are symmetrically arranged on the outer periphery of the boss, and the two ribs are symmetrically arranged on the outer periphery of the boss; Along the circumference of the boss, the two blocking portions and the two ribs are arranged alternately and spaced apart.

4. The driving force receiving member according to claim 3, wherein: The radial outer edges of the two blocking portions on the base are both arc surfaces, and the radial lengths of the radial outer edges of the two blocking portions are between 8 mm and 11.2 mm.

5. The driving force receiving member according to any one of claims 1 to 4, characterized in that: An inserting portion is provided at one end of the rib away from the base, and a width of the inserting portion gradually decreases from a direction close to the base to a direction away from the base.

6. The driving force receiving member according to claim 5, wherein: The driving force receiving surface and the braking force receiving surface are both closer to the base than the insertion portion.

7. The driving force receiving member according to claim 5, wherein: The width of the surface of the insert farthest from the base is between 0.4 mm and 1 mm; and / or The inserting portion has a first surface formed on a first side of the rib, and an angle between the first surface and a surface of the inserting portion away from the base is between 105° and 135°.

8. The driving force receiving member according to any one of claims 1 to 4, characterized in that: A support frame is provided on the base, and a base surface is formed on one end of the support frame away from the base, and the convex column is formed on the base surface; The angle between the braking force receiving surface and the base surface is between 30° and 60°; and / or The distance between the end surface of the driving force receiving surface away from the base and the base surface is 3 mm to 4.3 mm.

9. Photosensitive drum assembly, including a main body; Its characteristics are: One end of the main body is provided with the driving force receiving member according to any one of claims 1 to 8.

10. A processing box comprising a box body having two end covers, characterized in that: The photosensitive drum assembly according to claim 9 is disposed in the box body, and the photosensitive drum assembly is supported between the end covers.

Images