Processing box

Abstract

The present invention provides a process cartridge. The process cartridge includes a first unit and a second unit that are movably connected, the first unit including a photosensitive drum, and the second unit including a developing roller; a force-bearing member configured to drive the developing roller to move so that the developing roller has a contact position with the photosensitive drum and a separation position separated from the photosensitive drum; and an elastic member, a first end of the elastic member connected to an end cap, a second end of the elastic member connected to the force-bearing member, and the elastic member is deformed to lock the developing roller in the contact position or the separation position. The process cartridge of the present invention can solve the problem of the prior art that separation of the developing roller from the photosensitive drum requires too many and complex components.

Description

Technical Field

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

[0002] The process cartridge is a crucial component in a laser printer, and the developer roller and photosensitive drum are crucial components of the process cartridge. During printer operation, the developer roller and photosensitive drum must contact each other to transfer and color the toner. In traditional laser printers, prolonged contact between the developer roller and photosensitive drum causes indentations on the developer roller, which can affect the printer's performance over time.

[0003] Prior art CN113574468A addresses the issue of indentations caused by prolonged contact between the developing roller and the photosensitive drum. When the printer is not in use, the developing roller and photosensitive drum are separated. To achieve this separation, this solution incorporates multiple components, including a movable member 152R, a spacer 151R, and a tension spring 153. These components are coupled with a complex transmission mechanism to enable the developing roller to separate from and contact the photosensitive drum, and to maintain these positions. This large number of components results in numerous production steps and high costs. Furthermore, the complex transmission mechanisms for each component can lead to poor stability for the entire system. Summary of the Invention

[0004] The main purpose of the present invention is to provide a processing box that can solve the problem that the components for separating the developing roller and the photosensitive drum in the existing processing box are too many and too complicated.

[0005] To achieve the above-mentioned object, according to one aspect of the present invention, a process cartridge is provided. The process cartridge comprises: a first unit and a second unit movably connected, the first unit comprising a photosensitive drum, and the second unit comprising a developing roller; a drive shaft drivingly connected to the developing roller; an end cap for connecting the first unit and the second unit, the protective cover being movably connected to the end cap; a force receiving member configured to drive the developing roller to move so that the developing roller has a contact position with the photosensitive drum and a separation position with the photosensitive drum; and an elastic member, a first end of the elastic member being connected to the end cap, and a second end of the elastic member being connected to the force receiving member, wherein the elastic member is configured to lock the developing roller in the contact position or the separation position by means of expansion and contraction of the elastic member.

[0006] Furthermore, when the developing roller is in the separated position, the line connecting the first end and the second end of the elastic member is located on the first side of the central axis of the drive shaft; when the developing roller is in the contact position, the line connecting the first end and the second end of the elastic member is located on the second side of the central axis of the drive shaft, and the first side and the second side are respectively opposite sides of the central axis of the drive shaft.

[0007] Furthermore, the processing box also includes a protective cover, and the force receiving member can drive the protective cover to rotate synchronously, or the force receiving member and the protective cover are both rotatably arranged, and the rotation amplitude of the force receiving member is greater than the rotation amplitude of the protective cover.

[0008] Furthermore, the force receiving member is configured to be movably arranged relative to the protective cover to have a first position in which the force receiving member is engaged with the protective cover and a second position in which the force receiving member is released from the protective cover.

[0009] Furthermore, when the force receiving member is located at the first position, the elastic member is in an extended state, and the elastic member is configured to restore the force receiving member to the second position.

[0010] Furthermore, a first fixing column is provided on the end cover, a second fixing column is provided on the force-bearing component, the first end of the elastic component is connected to the first fixing column, the second end of the elastic component is connected to the second fixing column, and the elastic component can be deformed with the movement of the force-bearing component.

[0011] Furthermore, the first end and the second end of the elastic member are both provided with buckles, and the two buckles are respectively sleeved on the first fixing post and the second fixing post, and the two buckles are constructed to be able to rotate relative to the first fixing post and the second fixing post respectively.

[0012] Furthermore, the process cartridge further includes a guide structure configured to guide movement of the force receiving member relative to the protective cover.

[0013] Furthermore, a long guide hole is provided on one of the protective cover and the force-bearing component, and a guide column protrudes from the other of the protective cover and the force-bearing component. The length direction of the long guide hole is the same as the moving direction of the force-bearing component. The guide column passes through the long guide hole and slides with the long guide hole. The long guide hole and the guide column form a guide structure.

[0014] Furthermore, the second unit also includes a powder silo shell, the developing roller and the protective cover are both connected to the powder silo shell, and the powder silo shell can be driven to rotate by the protective cover.

[0015] Furthermore, a linkage hole is provided on one of the protective cover and the force-bearing component, and a linkage protrusion protrudes from the other of the protective cover and the force-bearing component. The edge of the linkage hole is open, and the linkage protrusion faces the opening of the linkage hole. The linkage protrusion is constructed to be able to be inserted into the linkage hole through the opening of the linkage hole, so that the force-bearing component is clamped with the protective cover.

[0016] By applying the technical solution of the present invention, the separation and contact of the developing roller and the photosensitive drum are achieved through the force-bearing component, and the locking of the developing roller is achieved through the elastic deformation of the elastic component. Even if the developing roller can be locked in the contact position with the photosensitive drum or the separation position separated from the photosensitive drum, the elastic component of the present application is respectively connected to the end cover and the force-bearing component, and there is no need to set other components such as spacers in the prior art, which effectively reduces the use of components, thereby reducing the production process and cost, and can solve the problem that there are many and overly complicated components for separating the developing roller and the photosensitive drum in the existing processing box; and the connection relationship and transmission principle between the force-bearing component and the elastic component are simple, which can relatively ensure the stability of the entire processing box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 An exploded schematic diagram of a process cartridge of the present invention is shown;

[0019] Figure 2 Shown Figure 1 A schematic structural diagram of a protective cover of a processing cartridge;

[0020] Figure 3 Shown Figure 2 A schematic structural diagram of the protective cover from another angle;

[0021] Figure 4 Shown Figure 1 A schematic structural diagram of an end cover of a processing cartridge;

[0022] Figure 5 Shown Figure 1 A schematic structural diagram of a force receiving member of a processing cartridge;

[0023] Figure 6 Shown Figure 5 A structural diagram of the force-bearing component from another angle;

[0024] Figure 7 The present invention shows Figure 1 A left side view of the process cartridge (wherein the force receiving member is in the second position);

[0025] Figure 8 Shown Figure 7 A structural diagram of an angle;

[0026] Figure 9 The present invention shows Figure 1 A left side view of the process cartridge (wherein the force receiving member is in the first position);

[0027] Figure 10 Shown Figure 9 A structural diagram of an angle;

[0028] Figure 11 The present invention is shown Figure 1 A left side view of the process cartridge (wherein the force receiving member is located at a contact position with the developing roller);

[0029] Figure 12 Shown Figure 11 A structural diagram of an angle;

[0030] Figure 13 Shown Figure 1 A left side view of the process cartridge (wherein the force receiving member is located at a contact position with the developing roller);

[0031] Figure 14 Shown Figure 13 A structural diagram of an angle;

[0032] Figure 15 Shown Figure 1 A left side view of the process cartridge (wherein the force receiving member is located in the first position);

[0033] Figure 16 Shown Figure 15 A structural diagram of an angle;

[0034] Figure 17 Schematic diagram showing the positional relationship between the connecting line at both ends of the elastic member of the present invention and the central axis of the drive shaft (corresponding to Figure 10 );

[0035] Figure 18 Schematic diagram showing the positional relationship between the connecting line at both ends of the elastic member of the present invention and the central axis of the drive shaft (corresponding to Figure 12 );

[0036] The above drawings include the following reference numerals:

[0037] 10. Photosensitive drum; 20. Developing roller; 30. Powder bin housing; 40. Drive shaft; 50. Protective cover; 51. Guide column; 52. Linkage hole; 60. End cover; 61. First fixed column; 70. Force-bearing member; 71. Linkage protrusion; 72. Long guide hole; 73. Force-bearing section; 74. Rotational driving section; 75. Second fixed column; 80. Elastic member; 90. Moving force-applying member; 100. Rotating force-applying member. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0039] See also Figure 1 As shown, the present invention provides a process cartridge. The process cartridge includes a first unit and a second unit movably connected, the first unit including a photosensitive drum 10 and the second unit including a developing roller 20; a drive shaft 40 drivingly connected to the developing roller 20; an end cap 60 for connecting the first unit and the second unit, and a protective cover 50 movably connected to the end cap 60; a force receiving member 70 configured to drive the developing roller 20 to move so that the developing roller 20 has a contact position with the photosensitive drum 10 and a separation position separated from the photosensitive drum 10; and an elastic member 80, a first end of the elastic member 80 connected to the end cap 60 and a second end of the elastic member 80 connected to the force receiving member 70, and the elastic member 80 is deformed to lock the developing roller 20 in the contact position or the separation position.

[0040] In the above-described technical solution, the first unit, second unit, drive shaft 40, protective cover 50, and end cap 60 are all existing components of a conventional process cartridge. The first unit is the waste toner hopper unit that includes the photosensitive drum 10, and the second unit is the toner hopper unit that includes the developing roller 20. In one embodiment, the developing roller 20 is driven by a force-bearing member 70, and the developing roller 20 moves along a curved path. For example, the developing roller 20 rotates about the central axis of the drive shaft 40. In another embodiment, the developing roller 20 can also move along a straight path, as long as it can contact and separate from the photosensitive drum 10.

[0041] With the above arrangement, when printing is not required, the force-bearing member 70 separates the developing roller 20 from the photosensitive drum 10, preventing the developing roller 20 from being in contact with the photosensitive drum 10 for a long time and causing indentations. When printing is required, the force-bearing member 70 brings the developing roller 20 into contact with the photosensitive drum 10, enabling transfer of printing powder therebetween. Furthermore, the elastic member 80 cooperates with the force-bearing member 70 to lock the developing roller 20 in a separation position or a contact position through elastic deformation of the elastic member 80. When printing is not required, the elastic member 80 prevents the force-bearing member 70 from moving, thereby preventing the developing roller 20 from moving from the separation position to the contact position. When printing is required, the elastic member 80 prevents the force-bearing member 70 from moving, thereby ensuring that the developing roller 20 is in the contact position, thereby preventing the printer from being unable to operate normally due to the random movement of the developing roller 20.

[0042] Through the above-mentioned arrangement, the function of placing the developing roller 20 in the separation position or the contact position as required can be realized only through the coordination and interaction between the force-bearing member 70 and the elastic member 80. The number of additional components is small, the connection relationship and the transmission principle are simple, and the addition of unnecessary components is reduced, thereby preventing the influence of redundant components on the working stability of the processing box, reducing the production process and cost of the components, simplifying the entire processing box, and increasing production efficiency.

[0043] It should be noted that, in one embodiment, the driving shaft 40 transmits power to the developing roller 20 through a gear transmission structure, so that the developing roller 20 can rotate around its own axis to achieve a printing operation.

[0044] See also Figures 7 to 18 As shown, in one embodiment of the present invention, when the developing roller 20 is in the separated position, the line connecting the first end and the second end of the elastic member 80 is located on the first side of the central axis of the drive shaft 40; when the developing roller 20 is in the contact position, the line connecting the first end and the second end of the elastic member 80 is located on the second side of the central axis of the drive shaft 40; the first side and the second side are respectively opposite sides of the central axis of the drive shaft 40.

[0045] In the above technical solution, if Figure 10 As shown, when the elastic member 80 is not deformed, that is, when the elastic member 80 is in the original length state, the line connecting the two ends ( Figure 17 HW) is located at the center axis of the drive shaft 40 ( Figure 17 R) in the left side, at this time the force bearing member 70 is located on the left side of the central axis of the drive shaft 40, Figure 17 F(T) in is the force applied to the force receiving member 70; Figure 12 As shown, when the elastic member 80 is deformed and the developing roller 20 is in the contact position, the line connecting the two ends of the elastic member 80 ( Figure 18 HW) is located at the center axis of the drive shaft 40 ( Figure 18 R) in the right side, at this time the lower portion of the force bearing member 70 is located on the right side of the central axis of the drive shaft 40, Figure 18 F(T) in FIG. 8 is the force applied to the force receiving member 70. According to the moment balance principle, the elastic force of the elastic member 80 keeps the force receiving member 70 in this position, even if the developing roller 20 is kept in the contact position.

[0046] Preferably, the elastic member 80 is a spring.

[0047] By setting the positions of the two ends of the elastic member 80, the length of the elastic member 80 and the matching relationship between the elastic member 80 and the force-bearing member 70, the function of locking the developing roller 20 in two positions can be achieved by only using the elastic member 80, without adding other components, thereby simplifying the overall structure of the processing box.

[0048] See also Figures 1 to 3 As shown, in one embodiment of the present invention, the process cartridge further comprises a protective cover 50 , and the force receiving member 70 can drive the protective cover 50 to rotate synchronously.

[0049] In the above technical solution, the protective cover 50 is rotatably connected to the end of the drive shaft 40. The rotation axis of the protective cover 50 is the central axis of the drive shaft 40, that is, the protective cover 50 rotates around the central axis of the drive shaft 40. When the protective cover 50 rotates, the drive shaft 40 remains stationary. The protective cover 50, as an intermediate component, is directly rotated by the force-bearing member 70, thereby driving the development roller 20 to rotate.

[0050] Through the above arrangement, since the protective cover 50 is rotationally connected to the drive shaft 40, the rotation path of the protective cover 50 itself is unique and the rotation action is stable; and since the protective cover 50 and the force-bearing member 70 and the developing roller 20 have a same-direction rotation relationship, on the one hand, the force-bearing member 70 can be stably rotated around the drive shaft 40 through the protective cover 50, and on the other hand, the developing roller 20 can be driven by the protective cover 50 to rotate around the drive shaft 40; and since the rotation axis of the protective cover 50 coincides with the central axis of the drive shaft 40, the formation of the motion trajectory of the force-bearing member 70 is facilitated.

[0051] In another embodiment, the force receiving member 70 and the protective cover 50 are both rotatably arranged, and the rotation range of the force receiving member 70 is greater than the rotation range of the protective cover 50. In this way, the developing roller 20 can be driven to rotate by the protective cover 50 and the force receiving member 70.

[0052] See also Figures 2 to 6 As shown, in one embodiment of the present invention, the force receiving member 70 is configured to be movably disposed relative to the protective cover 50 to have a first position engaged with the protective cover 50 and a second position disengaged from the protective cover 50 .

[0053] In the above technical solution, the force receiving member 70 has three movable positions: a second position, a first position, and a third position. When the force receiving member 70 is in the second position or the first position, the developing roller 20 is in a separated position. When the force receiving member 70 is in the third position, the developing roller 20 is in a contact position. Furthermore, when the force receiving member 70 is in the second position, the elastic member 80 is in its original length; when the force receiving member 70 is in the first position, the elastic member 80 is stretched once; and when the force receiving member 70 is in the third position, the elastic member 80 is stretched twice.

[0054] During the process of switching the developing roller 20 from the separation position to the contact position, the action process of the force bearing member 70 is as follows: first, the force bearing member 70 switches from the second position to the first position, and moves downward in the vertical direction relative to the protective cover 50. At this time, the protective cover 50 remains stationary, and only the force bearing member 70 moves. The movement function of this stage is to make the force bearing member 70 engage with the protective cover 50, so that the subsequent rotation of the force bearing member 70 can drive the protective cover 50 to rotate; secondly, the force bearing member 70 switches from the second position to the third position, driving the protective cover 50 to rotate around the central axis of the drive shaft 40, so that the protective cover 50 drives the developing roller 20 to rotate in the direction close to the photosensitive drum 10, thereby realizing the contact between the developing roller 20 and the photosensitive drum 10.

[0055] During the process of switching the developing roller 20 from the contact position to the separation position, the action process of the force bearing member 70 is as follows: first, the force bearing member 70 switches from the third position to the first position, so that the force bearing member 70 can drive the protective cover 50 to rotate around the central axis of the drive shaft 40, so that the protective cover 50 drives the developing roller 20 to rotate in the direction away from the photosensitive drum 10, thereby separating the developing roller 20 from the photosensitive drum 10; secondly, the force bearing member 70 switches from the first position to the second position, and moves upward in the vertical direction relative to the protective cover 50. At this time, the protective cover 50 remains stationary, and only the force bearing member 70 moves. The movement in this stage is used to release the clamping relationship between the force bearing member 70 and the protective cover 50, so that the action of the force bearing member 70 no longer affects the protective cover 50, thereby realizing the separation of the developing roller 20 from the photosensitive drum 10.

[0056] Through the above-mentioned arrangement, the force-bearing member 70 moves sequentially between the three positions, switching from individual movement to driving the protective cover 50 to rotate. The simple structure realizes a simple transmission relationship, thereby realizing the required functions, making full use of the force-bearing member 70, so that a single component can realize multiple functions.

[0057] See also Figure 10 As shown, in one embodiment of the present invention, when the force receiving member 70 is located at the first position, the elastic member 80 is in an extended state, and the elastic member 80 is configured to restore the force receiving member 70 to the second position.

[0058] In the above technical solution, when the force-bearing member 70 needs to switch from the first position to the second position, when the force applied to the force-bearing member 70 disappears, the elastic member 80 restores its original length through its own elastic properties, driving the force-bearing member 70 to move from the first position to the second position.

[0059] Through the above arrangement, in addition to the function of locking the developing roller 20 in two different positions, the elastic component 80 also has the function of helping the force-bearing component 70 to reset. One elastic component 80 has multiple functions that can only be possessed by multiple components, which further reduces the addition of components and makes the entire linkage mechanism more ingenious and simpler.

[0060] See also Figures 4 to 16 As shown, in one embodiment of the present invention, a first fixing column 61 is provided on the end cover 60, a second fixing column 75 is provided on the force-bearing member 70, a first end of the elastic member 80 is connected to the first fixing column 61, and a second end of the elastic member 80 is connected to the second fixing column 75, and the elastic member 80 can be deformed as the force-bearing member 70 moves.

[0061] In the above technical solution, the first fixed column 61 is fixed on the end cover 60 and forms an integrated structure with the end cover 60. Since the end cover 60 always remains in a fixed state, the first end of the elastic member 80 always remains in a fixed position; the second fixed column 75 is fixed on the force-bearing member 70 and forms an integrated structure with the force-bearing member 70. During the movement and rotation of the force-bearing member 70, the second end of the elastic member 80 is driven to move and rotate through the second fixed column 75, so that the elastic member 80 is stretched or retracted.

[0062] Through the above-mentioned setting, a connection point is provided for the elastic component 80. The integrated structural design also makes the first fixing column 61 and the second fixing column 75 more stable, thereby making the connection of the elastic component 80 more stable, ensuring the elastic deformation action of the elastic component 80 and the smooth realization of its function.

[0063] See also Figures 7 to 16 As shown, in one embodiment of the present invention, the first end and the second end of the elastic member 80 are both provided with buckles, and the two buckles are respectively sleeved on the first fixed column 61 and the second fixed column 75, and the two buckles are constructed to be able to rotate relative to the first fixed column 61 and the second fixed column 75, respectively.

[0064] In the above technical solution, on the one hand, the buckle is used to connect the first end and the second end of the elastic member 80 to the first fixed column 61 and the second fixed column 75 respectively. On the other hand, the buckle can also be used to enable the first end and the second end of the elastic member 80 to rotate relative to the first fixed column 61 and the second fixed column 75 respectively.

[0065] Through the above-mentioned arrangement, when the force-bearing member 70 switches from the first position to the third position and from the third position to the first position, the first end and the second end of the elastic member 80 rotate, so as not to hinder the rotation of the force-bearing member 70 and ensure the smoothness of the rotation of the force-bearing member 70.

[0066] See also Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 As shown, in one embodiment of the present invention, the process cartridge further includes a guide structure configured to guide movement of the force receiving member 70 relative to the protective cover 50 .

[0067] In the above technical solution, on the one hand, the guide structure is used to limit the vertical movement path of the force receiving member 70 , and on the other hand, the guide structure is also used to provide a connection position for the force receiving member 70 .

[0068] Through the above arrangement, the movement process of the force receiving member 70 is made more stable, and the force receiving member 70 will not separate from the protective cover 50 .

[0069] See also Figure 2 、 Figure 3 、 Figures 5 to 16 As shown, in one embodiment of the present invention, a long guide hole 72 is provided on one of the protective cover 50 and the force-bearing member 70, and a guide column 51 protrudes and extends from the other of the protective cover 50 and the force-bearing member 70. The length direction of the long guide hole 72 is the same as the moving direction of the force-bearing member 70. The guide column 51 passes through the long guide hole 72 and slides with the long guide hole 72. The long guide hole 72 and the guide column 51 form a guide structure.

[0070] In the above technical solution, the guide slot 72 is formed in the force-bearing member 70, and the guide post 51 is provided on the protective cover 50 to form an integral structure with the protective cover 50. The force-bearing member 70 is connected to the protective cover 50 through the cooperation between the guide slot 72 and the guide post 51, thereby preventing the force-bearing member 70 from being separated from the protective cover 50. The longitudinal direction and length of the guide slot 72 are respectively the same as the movement direction and movement length of the force-bearing member 70. That is, the vertical movement range of the force-bearing member 70 is the length of the guide slot 72, and the guide post 51 moves back and forth between the first end and the second end of the guide slot 72.

[0071] Through the above arrangement, the long guide hole 72 plays a guiding role, and is used to form a moving path of the force receiving member 70, so that the movement of the guide column 51 is smoother, and further the movement of the force receiving member 70 is smoother.

[0072] See also Figure 1As shown, in one embodiment of the present invention, the second unit further includes a powder silo housing 30 , the developing roller 20 and the protective cover 50 are both connected to the powder silo housing 30 , and the powder silo housing 30 can be driven to rotate by the protective cover 50 .

[0073] Through the above arrangement, the protective cover 50 indirectly drives the developing roller 20 to move through the powder hopper shell 30. During the printing operation, since the powder hopper shell 30 always remains stationary and the developing roller 20 needs to rotate, the protective cover 50 is directly fixedly connected to the powder hopper shell 30, which makes the connection method simple and does not affect the rotation of the developing roller 20. If the protective cover 50 is directly connected to the developing roller 20, the problem of the rotation of the developing roller 20 needs to be considered, the connection method is complicated, and it will also affect the stability of the rotation of the protective cover 50 and the rotation of the developing roller 20.

[0074] In one embodiment, the powder bin housing 30 is driven by the protective cover 50 , and the movement path of the powder bin housing 30 is a curve. For example, the movement path of the powder bin housing 30 is a rotation around the central axis of the driving shaft 40 .

[0075] In another embodiment, the drive shaft 40 and the gear portion are separate structures, and the two are connected to each other by a structure such as a cross slot. The powder bin housing 30 is driven by the protective cover 50, and the movement path of the powder bin housing 30 is a straight line.

[0076] See also Figures 6 to 16 As shown, in one embodiment of the present invention, a linkage hole 52 is provided on one of the protective cover 50 and the force-bearing member 70, and a linkage protrusion 71 protrudes and extends from the other of the protective cover 50 and the force-bearing member 70. The edge of the linkage hole 52 is open, and the linkage protrusion 71 faces the opening of the linkage hole 52. The linkage protrusion 71 is constructed to be able to be inserted into the linkage hole 52 through the opening of the linkage hole 52, so that the force-bearing member 70 is engaged with the protective cover 50.

[0077] Through the above-mentioned arrangement, the linkage between the force-bearing component 70 and the protective cover 50 is realized by the snap-fitting of the linkage protrusion 71 and the linkage hole 52, thereby making the structure and principle of the linkage protrusion 71 and the linkage hole 52 simple, and no additional components are needed to realize the linkage between the force-bearing component 70 and the protective cover 50, thereby increasing the simplicity of the overall structure.

[0078] In one embodiment, the linkage protrusion 71 is a prism, and the end of the linkage hole 52 is a polygonal shape that matches the linkage protrusion 71. When the linkage protrusion 71 and the linkage hole 52 cooperate, the rotation of the force receiving member 70 can drive the synchronous rotation of the protective cover 50. For example, the linkage protrusion 71 is a triangular prism, and the end of the linkage hole 52 is a triangle with a single-side opening.

[0079] Through the above arrangement, the force-bearing member 70 and the protective cover 50 have the same rotation amplitude, and the matching design of the prism and polygon enables the force-bearing member 70 to smoothly drive the protective cover 50 to rotate stably, and there will be no slipping between the two, resulting in a situation where synchronous rotation cannot occur.

[0080] In another embodiment, the linkage protrusion 71 is a cylinder with a rough surface, and the end of the linkage hole 52 is a semicircular arc, which is adapted to the linkage protrusion 71. After the linkage protrusion 71 is matched with the linkage hole 52, the force-bearing component 70 drives the protective cover 50 to rotate asynchronously through the action of friction.

[0081] See also Figure 5 and Figure 6 As shown, in one embodiment of the present invention, the force-bearing member 70 includes a force-bearing section 73 and a driving section 74. The force-bearing section 73 is constructed to be able to move the force-bearing member 70 by receiving force, and the driving section 74 is constructed to be able to rotate the force-bearing member 70 by receiving force.

[0082] In the above technical solution, the upper part of the force-bearing member 70 is the load-bearing section 73, and the lower part of the force-bearing member 70 is the driving section 74. The load-bearing section 73 is used to receive the vertical thrust applied thereto to move the force-bearing member 70; the driving section 74 is used to receive the horizontal thrust applied thereto to rotate the force-bearing member 70.

[0083] See also Figures 6 to 16 As shown, in one embodiment of the present invention, the processing box is applied to a device such as a printer, and the printer also includes a movable force-applying member 90 and a rotating force-applying member 100. The movable force-applying member 90 is constructed to be able to apply force to the force-bearing section 73 to move the force-bearing member 70, and the rotating force-applying member 100 is constructed to be able to apply force to the driving section 74 to rotate the force-bearing member 70.

[0084] In the above technical solution, the movable force-applying member 90 is the printer's opening and closing cover. When the movable force-applying member 90 is closed, it applies a thrust to the force-bearing section 73 of the force-bearing member 70, causing the force-bearing member 70 to move toward the first position. When the movable force-applying member 90 is opened, the force applied to the force-bearing section 73 of the force-bearing member 70 disappears, allowing the force-bearing member 70 to move toward the second position. When the rotational force-applying member 100 moves in the first horizontal direction, it applies a thrust in the first horizontal direction to the driving section 74 of the force-bearing member 70, causing the force-bearing member 70 to rotate toward the third position. When the rotational force-applying member 100 moves in the second horizontal direction, it applies a thrust in the second horizontal direction to the driving section 74 of the force-bearing member 70, causing the force-bearing member 70 to rotate toward the first position. Both the movable force-applying member 90 and the rotational force-applying member 100 are used to apply force to the force-bearing member 70, causing it to move or rotate. The rotation force applying member 100 is a separation control component in the prior art CN113574468A.

[0085] Through the above arrangement, both the movable force applying member 90 and the rotating force applying member 100 use existing components on the printer, thereby further reducing the addition of unnecessary components and ensuring a simple structure of the process cartridge.

[0086] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0087] (1) The first unit and the second unit are made to cooperate with each other, and a force receiving member 70 is added to drive the powder bin housing 30 of the second unit to rotate, thereby driving the developing roller 20 of the second unit to rotate in a direction close to or away from the photosensitive drum 10. When printing is not required, the developing roller 20 is separated from the photosensitive drum 10 by the force receiving member 70, thereby reducing the possibility of indentation on the developing roller 20. When printing is required, the developing roller 20 is brought into contact with the photosensitive drum 10 by the force receiving member 70, without affecting the normal use of the printer.

[0088] (2) The elastic member 80 can lock the developing roller 20 in the contact position and the separation position. When the printing operation is in progress, the elastic member 80 prevents the second unit from being subjected to an external force that causes the developing roller 20 to separate from the photosensitive drum 10. When the printing operation is not in progress, the elastic member 80 prevents the second unit from being subjected to an external force that causes the developing roller 20 to contact the photosensitive drum 10, thereby preventing the force receiving member 70 from losing its function.

[0089] (3) The force receiving member 70 cooperates with the protective cover 50 by means of the linkage protrusion 71 and the linkage hole 52, which has a simple structure and principle, is easy to operate, reduces the complexity of the force receiving member 70, and reduces the complexity of modifying the protective cover 50 relative to the existing process cartridge protective cover 50;

[0090] (4) Both the movable force-applying member 90 and the rotating force-applying member 100 use existing components on the printer. The specific structure of the force-bearing member 70 is designed to match the movement of the existing components of the printer. No additional components are required to apply force to the force-bearing member 70, ensuring the simplicity of the structure of the entire device.

[0091] Obviously, the embodiments described above are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0092] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0093] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A process cartridge, characterized in that: include: A first unit and a second unit connected in a movably manner, wherein the first unit includes a photosensitive drum (10) and the second unit includes a developing roller (20); A driving shaft (40) is drivingly connected to the developing roller (20); an end cap (60) for connecting the first unit and the second unit; a force receiving member (70), wherein the force receiving member (70) is configured to drive the developing roller (20) to move so that the developing roller (20) has a contact position with the photosensitive drum (10) and a separation position with the photosensitive drum (10); as well as An elastic member (80), wherein a first end of the elastic member (80) is connected to the end cover (60), and a second end of the elastic member (80) is connected to the force receiving member (70), and the developing roller (20) is locked in the contact position or the separation position through the expansion and contraction deformation of the elastic member (80).

2. The process cartridge according to claim 1, wherein When the developing roller (20) is located at the separation position, the line connecting the first end and the second end of the elastic member (80) is located on the first side of the central axis of the drive shaft (40); when the developing roller (20) is located at the contact position, the line connecting the first end and the second end of the elastic member (80) is located on the second side of the central axis of the drive shaft (40), and the first side and the second side are respectively opposite sides of the central axis of the drive shaft (40).

3. The process cartridge according to claim 1, wherein The processing box also includes a protective cover (50), and the force-bearing member (70) can drive the protective cover (50) to rotate synchronously, or the force-bearing member (70) and the protective cover can both be rotatably arranged, and the rotation amplitude of the force-bearing member (70) is greater than the rotation amplitude of the protective cover (50).

4. The process cartridge according to claim 3, wherein: The force receiving member (70) is configured to be movably arranged relative to the protective cover (50) so as to have a first position in which the force receiving member is engaged with the protective cover (50) and a second position in which the force receiving member is released from the protective cover (50).

5. The process cartridge according to claim 4, wherein: When the force receiving member (70) is located at the first position, the elastic member (80) is in an extended state, and the elastic member (80) is configured to enable the force receiving member (70) to return to the second position.

6. The process cartridge according to any one of claims 1 to 5, wherein: The end cover (60) is provided with a first fixing column (61), the force receiving member (70) is provided with a second fixing column (75), the first end of the elastic member (80) is connected to the first fixing column (61), and the second end of the elastic member (80) is connected to the second fixing column (75), and the elastic member (80) can be deformed as the force receiving member (70) moves.

7. The process cartridge according to claim 6, wherein: The first end and the second end of the elastic member (80) are both provided with buckles, and the two buckles are respectively sleeved on the first fixing column (61) and the second fixing column (75), and the two buckles are configured to be able to rotate relative to the first fixing column (61) and the second fixing column (75).

8. The process cartridge according to any one of claims 3 to 5, wherein: The processing box further includes a guide structure configured to guide the movement of the force receiving member (70) relative to the protective cover (50).

9. The process cartridge according to claim 8, wherein A long guide hole (72) is provided on one of the protective cover (50) and the force-bearing member (70), and a guide column (51) protrudes from the other of the protective cover (50) and the force-bearing member (70). The length direction of the long guide hole (72) is the same as the moving direction of the force-bearing member (70). The guide column (51) passes through the long guide hole (72) and slides with the long guide hole (72). The long guide hole (72) and the guide column (51) form the guide structure.

10. The process cartridge according to claim 8, wherein The second unit further comprises a powder bin housing (30), the developing roller (20) and the protective cover (50) are both connected to the powder bin housing (30), and the powder bin housing (30) can be driven to rotate by the protective cover (50).

11. The process cartridge according to claim 4 or 5, wherein: A linkage hole (52) is provided on one of the protective cover (50) and the force-bearing member (70), and a linkage protrusion (71) protrudes and extends from the other of the protective cover (50) and the force-bearing member (70). The edge of the linkage hole (52) is open, and the linkage protrusion (71) faces the opening of the linkage hole (52). The linkage protrusion (71) is constructed to be able to be inserted into the linkage hole (52) through the opening of the linkage hole (52), so that the force-bearing member (70) is connected to the protective cover (50).

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