A processing box

Abstract

This patent relates to a processing box, which includes a developing unit and a photosensitive unit; the developing unit includes a developing element, the photosensitive unit includes a photosensitive element, and the processing box also includes a control unit. The control unit can separate the developing element from the photosensitive element.

Description

Technical Field

[0001] The present invention relates to a process box on an image forming device. Background Art

[0002] The image forming device of the prior art is provided with a photosensitive driving element and a developing driving element. The processing box is detachably installed in the image forming device and receives a driving force from the image forming device to drive the photosensitive element and the developing element on the processing box. Summary of the invention

[0003] The main purpose of the present invention is to provide a structure that can control the distance between a photosensitive element driving head and a developing element driving head. The specific structure is: a processing box, the processing box includes a developing unit and a photosensitive unit; the developing unit includes a developing element, and the photosensitive unit includes a photosensitive element, characterized in that the processing box also includes a control unit, the control unit includes a control element, when the control element is close to or away from the developing unit, the developing element is away from or close to the photosensitive element.

[0004] The control unit includes a control element, which can move between a first position and a second position; when the control element is in the first position, the control element is away from the developing unit, and the photosensitive element and the developing element are in contact; when the control element is in the second position, the control element is closer to the developing unit than when the control element is in the first position, and the developing element is not in contact with the photosensitive element.

[0005] The control unit includes a control element, which can move between a first position and a second position; when the control element is in the first position, the control element is away from the developing unit, and the developing element is close to the photosensitive element; when the control element is in the second position, the control element is closer to the developing unit than when the control element is in the first position, and the developing element is away from the photosensitive element.

[0006] The control element is arranged on the developing unit and extends out of the developing unit to receive external force.

[0007] The control unit includes a first gear element, a second gear element and a third gear element arranged in the developing unit of the processing box; and the first gear element, the second gear element and the third gear element are all provided with gears; a swing rod is provided on the first gear element, and the swing rod can control the rotation of the first gear element; the swing rod is a control element; the gear on the second gear element meshes with the gear on the first gear element and transmits power; the gear on the third gear element meshes with the gear on the second gear element and transmits power; a cam part is provided on the third gear element, and the cam part can rotate with the third gear element; the rotation of the swing rod controls the cam part to abut or not abut against the photosensitive unit, thereby controlling the developing element and the photosensitive element to move away from or approach to each other.

[0008] The control unit includes a push rod and a push rod; the push rod is a control element; a rotating shaft is provided on the push rod, a rotating shaft is provided on the push rod, and the push rod and the push rod are connected by a hinge; the push rod and the push rod are both provided on the developing unit; one end of the push rod is connected to the push rod, and the other end extends toward the photosensitive unit; the push rod extends out of the developing unit; the rotation of the push rod around its rotating shaft controls the rotation of the push rod, so that the push rod and the photosensitive unit are not abutted or squeezed, so that the developing element is close to or away from the photosensitive element.

[0009] The control unit includes a first pressure rod, a second gear element and a third gear element; the first pressure rod is provided with a rack portion, the rack portion is meshed with the second gear element, and the second gear element is meshed with the third gear element; the third gear element is provided with a cam portion; the first pressure rod extends out of the developing unit, and is also provided with an inclined surface; the first pressure rod is a control element; the first pressure rod receives an external force to make the first pressure rod approach or move away from the developing unit, so that the cam portion is meshed or not meshed with the photosensitive unit, thereby controlling the developing element to move away from or close to the photosensitive element.

[0010] The control unit includes a first pressure rod and a second push rod; the first pressure rod is a control element; the first pressure rod is movable on the developing unit, and is provided with an inclined surface; the second push rod rotates around a rotating shaft provided on the developing unit; the first pressure rod receives an external force to make the first pressure rod approach or move away from the developing unit, so that the second push rod abuts or does not abut against the photosensitive unit, thereby controlling the developing element to move away from or close to the photosensitive element. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 , 2 They are schematic diagrams of the developing element and the photosensitive element of the process box in the first embodiment of the present invention when they are in the contact box separation;

[0012] Figure 3 , 4 They are respectively the structural schematic diagrams of the second embodiment of the present patent;

[0013] Figure 5-7 They are schematic diagrams of the structure of Embodiment 3 of the present patent;

[0014] Figure 8-11 They are respectively structural schematic diagrams of the fourth embodiment of the present patent;

[0015] Figure 12-14 They are respectively the structural schematic diagrams of the fifth embodiment of the present patent;

[0016] Fig.15 This is a schematic diagram of the structure of Embodiment 6 of this patent;

[0017] Fig.16 This is a schematic diagram of the structure of Embodiment 7 of this patent;

[0018] Figure 17-27 They are respectively the structure and working schematic diagrams of the eighth embodiment of the present patent. DETAILED DESCRIPTION

[0019] The content of the present invention is explained below in conjunction with the drawings and embodiments. The embodiments adopted in the present invention are only used to explain the content of the present invention and are not used to limit the present invention.

[0020] Embodiment 1:

[0021] like Figure 1 As shown in FIG. 1 , the process cartridge is provided with a developing unit 41 and a photosensitive unit 31, the developing unit 41 is provided with a developing element 42, and the photosensitive unit 31 is provided with a photosensitive element 32. The developing unit 41 can be close to or away from the photosensitive unit 31, so that the developing element 42 is in contact with or not in contact with the photosensitive element 32 (i.e., separated); Figure 1 As shown, the developing unit 41 rotates around the rotating shaft 46b, thereby realizing that the developing element 42 is in contact with or not in contact with (i.e., separated from) the photosensitive element 32. An elastic element 95 is also provided between the developing unit 41 and the photosensitive unit 31, and the elastic element 95 provides elastic force for the developing unit 41 and the photosensitive unit 31, so that the developing unit 41 rotates around the rotating shaft 46b, and the developing element 42 is close to the photosensitive element 32 and in contact with it.

[0022] like Figure 1 As shown, the image forming device (ie, a printer, a copier, a fax machine, etc.) is provided with a power applying element 61; the power applying element 61 can rotate around its own rotating shaft 61a.

[0023] The processing box is also provided with a control unit, which includes a push rod 10, a rotating rod 20 and a push rod 30; the push rod 10 is connected to the rotating rod 20 by a hinge 10a; the rotating rod 20 can rotate around the rotating shaft 20a; one end of the push rod 30 is connected to the rotating rod 20 by a hinge 20b; the push rod 30 can rotate around the rotating shaft 30a, and the other end of the push rod 30 abuts against the developing unit 41, and the position of the developing unit 41 abutting against the push rod 30 is located on the other side of the rotating shaft 46b relative to the push rod 10, and the farther the position of the developing unit 41 abutting against the push rod 30 is from the rotating shaft 46b, the smaller the force required to separate the developing unit 41. The control unit (push rod 10, rotating rod 20 and push rod 30) is all provided on the photosensitive unit 31.

[0024] like Figure 1 As shown, when the power applying element 61 on the image forming device is not in contact with the push rod 10 and applies force to the push rod 10, the elastic element 95 causes the developing unit 41 to rotate around the rotating shaft 61a so that the developing unit 41 is close to the photosensitive unit 31, so that the developing element 42 is in contact with the photosensitive element 32.

[0025] like Figure 2 As shown, when the power timing element 61 rotates and abuts against the push rod 10 and provides a thrust for the push rod 10, the push rod 10 moves in the direction A shown in the figure, thereby driving the rotating rod 20 to rotate around the rotating shaft 20a in the direction B shown in the figure, and then the push rod 30 rotates around the rotating shaft 30a in the direction C shown in the figure under the action of the rotating rod 20, and finally the push rod 30 pushes the developing unit 41 to rotate around the rotating shaft 61a; the rotation of the developing unit 41 causes the developing element 42 to move in the direction away from the photosensitive element 32, and finally the developing element 42 and the photosensitive element 32 are not in contact (separated), and a distance L is formed.

[0026] By providing a control unit on the photosensitive unit 31 , the power of the power applying element 61 located above the photosensitive element 32 can be converted into the rotational force of the developing unit 41 , so that the developing element 42 is separated from the photosensitive element 32 .

[0027] When the power applying element 61 rotates around its rotation axis 61a (i.e., Figure 2 Rotate the position shown to Figure 1 When the developing unit 41 is in the position shown in the figure and no longer contacts and provides thrust to the push rod 10, the developing unit 41 rotates around the rotating shaft 46b under the action of the elastic element 95 and returns to the position shown in the figure. Figure 1 In the state shown, the ejector rod 30 is pushed by the developing unit 41 and rotates around the rotating shaft 30a (along the Figure 2 The rotating rod 20 rotates in the opposite direction of the direction indicated by the arrow C in the middle), and at the same time drives the rotating rod 20 to rotate around the rotating shaft 20a (along the Figure 2 The push rod 10 is rotated in the opposite direction of the direction indicated by the arrow B in the middle), and finally the push rod 10 is rotated in the opposite direction of the direction indicated by the arrow B in the middle Figure 2The development unit 41 and the control unit are finally restored to the reverse direction of the arrow A. Figure 1 Status shown.

[0028] Embodiment 2:

[0029] In addition to the scheme shown in the first embodiment, the control unit may also adopt the scheme in this embodiment; therefore, the structural features and working methods in this embodiment that are the same as those in the first embodiment will not be described repeatedly.

[0030] like Figure 3 As shown, the control unit includes a first gear element 40, a second gear element 50 and a third gear element 60, and the first gear element 40, the second gear element 50 and the third gear element 60 are all provided with gears, and the first gear element 40, the second gear element 50 and the third gear element 60 are all provided on the photosensitive unit 31; a swing rod 40a is provided on the first gear element 40, and the swing rod 40a can control the rotation of the first gear element 40; the gear on the second gear element 50 is meshed with the gear on the first gear element 40 and transmits power; the gear on the third gear element 60 is meshed with the gear on the second gear element 50 and transmits power; the third gear element 60 is provided with a cam portion 60a, and the cam portion 60a can rotate with the third gear element 60.

[0031] like Figure 3 As shown, when the power applying element 61 is not in contact with the swing rod 40a, the control unit is in Figure 3 In the state shown, the cam portion 60 a does not abut against the developing unit 41 or does not give the developing unit 41 a force to move away from the photosensitive unit 31 . At this time, the developing unit 41 approaches the photosensitive unit 31 under the action of the elastic element 95 , and the developing element 42 contacts the photosensitive element 32 .

[0032] When the power applying element 61 rotates around the rotation axis 61a and abuts against the swing rod 40a, the power applying element 61 causes the swing rod 40a to move from Figure 3 The status shown rotates to Figure 4 In the state shown, the first gear element 40 is driven by the swing rod 40a along Figure 4 The first gear element 40 drives the second gear element 50 to rotate in the direction of F shown in the figure, and the third gear element 60 is driven by the second gear element 50 and rotates in the direction of G shown in the figure; since the cam portion 60a can rotate with the third gear element 60, the cam portion 60a rotates to Figure 4 In the position shown in FIG. 1 , the cam portion 60a exerts a force on the developing unit 41 to move away from the photosensitive unit 31, causing the developing unit 41 to rotate around the rotating shaft 46b to the position shown in FIG. Figure 4 In the state shown, the developing unit 41 is away from the photosensitive unit 31, and the developing element 42 is not in contact with the photosensitive element 32 (ie, separated). Figure 4 It can be seen that the position of the developing unit 41 that contacts the cam portion 60a is located on the other side of the rotating shaft 46b relative to the swing lever 40a, and the force received at this position can cause the developing unit 41 to rotate around the rotating shaft 46b along the Figure 4 Rotate in the direction H shown.

[0033] When the power applying element 61 has Figure 4 The status shown rotates to Figure 3 After the state shown, the power applying element 61 is no longer in contact with the swing rod 40a; the developing unit 41 moves closer to the photosensitive unit 31 under the action of the elastic element 95, and squeezes the cam portion 60a, so that the cam 60a moves along Figure 4 Rotate in the opposite direction of G and turn to Figure 3 At this time, the third gear element 60 drives the first gear element 40 through the second gear element 50, and the swing rod 40a returns to Figure 3 Status shown.

[0034] When the power applying element 61 is Figure 4 Status turns to Figure 3 In order to make the control unit Figure 4 The status shown is restored to Figure 3 In the state shown in the figure, the present embodiment can also be: a torsion spring is arranged on the first gear element 40, the second gear element 50 or the third gear element 60, and the torsion spring can provide elastic restoring force for the first gear element 40, the second gear element 50 or the third gear element 60, so that the first gear element 40, the second gear element 50 or the third gear element 60 is Figure 4 The status shown is restored to Figure 3 Status shown.

[0035] Embodiment three:

[0036] The structure, connection relationship and working mode of this embodiment that are the same as those of the first embodiment will not be described again.

[0037] like Figure 5 As shown, the image forming device is provided with a second power applying element A60, a door cover 12, a supporting element 13 and a bottom surface portion 11; the power applying element 61 is in a "hook" shape (such as an L shape); the door cover 12 and the supporting element 13 are connected by a hinge, and the door cover 12 can rotate around a rotating shaft 12a on the image forming device; the processing box is supported by the supporting element 13 after being installed on the image forming device; the bottom surface portion 11 is arranged below the image forming device and is also located below the supporting element 13. Figure 5As shown, the control unit includes a first connecting rod 70, a first gear 70a, a second connecting rod 80 and a second gear 80a; the first connecting rod 70, the first gear 70a, the second connecting rod 80 and the second gear 80a are all arranged on the developing unit 41 and are located on one side of the axial direction of the developing element 42 on the processing box; racks are arranged on the first connecting rod 70 and the second connecting rod 80; the rack on the first connecting rod 70 is meshed with the first gear 70a; the rack on the second connecting rod 80 is meshed with the second gear 80a; the first gear 70a is meshed with the second gear 80a, and the diameter of the second gear 80a is larger than the diameter of the first gear 70a; when the processing box is installed on the image forming device, the second connecting rod 80 is located below the first connecting rod 70, and at least a portion of the second connecting rod 80 extends out of the developing unit 41.

[0038] like Figure 5 As shown, when the process cartridge is installed on the image forming apparatus, the process cartridge is supported by the supporting member 13, and the second connecting rod 80 passes through the supporting member 13 and extends downward, but the first connecting rod 70 does not abut against the bottom surface portion 11 and receive the thrust from the bottom surface portion 11. At this time, the first connecting rod 70 does not abut against the second power applying member A60 and receive the power from the second power applying member A60 (there is no overlap in the horizontal direction). At this time, the developing member 42 and the photosensitive member 32 are in contact under the action of the elastic member 95.

[0039] like Figure 6 As shown, when the door cover 12 is rotated in the direction of arrow I in the figure, since the door cover 12 rotates around the rotating shaft 12a, the door cover 12 drives the supporting element 13 to move downward in the J direction in the figure (move in the vertical direction), and drives the processing box to move in the J direction at the same time. During the downward movement of the processing box and the supporting element 13, the second connecting rod 80 abuts against the bottom surface portion 11, and the bottom surface portion 11 pushes the second connecting rod 80 to move in the opposite direction of the J direction in the figure, thereby driving the second gear 80a and the first gear 70a to rotate in turn, and finally driving the first connecting rod 70 to move in the opposite direction of the J direction in the figure, and finally the first connecting rod 70 extends out of the developing unit 41, and since the diameter of the second gear 80a is larger than the diameter of the first gear 70a, the distance that the first connecting rod 70 moves in the opposite direction of the J direction is greater than the distance that the second connecting rod 80 moves in the opposite direction of the J direction, and after the first connecting rod 70 extends out of the developing unit 41, it can abut against the second power applying element A60 (partially overlapped in the horizontal direction).

[0040] like Figure 7 As shown, when the second power applying element A60 on the image forming device moves along the K direction shown in the figure, the first connecting rod 70, driven by the second power applying element A60, causes the developing unit 41 to rotate around the rotating shaft 46b along the M direction shown in the figure, so that the developing element 42 is separated from the photosensitive element 32 (forming a spacing L as shown in the figure).

[0041] When the second power applying element A60 on the image forming device moves along Figure 7 When the second power applying element A60 no longer provides power to the first connecting rod 70, the developing unit 41 moves along the K direction under the action of the elastic element 95. Figure 7 The developing element 42 is rotated in the opposite direction to the M direction so that the developing element 42 contacts the photosensitive element 32.

[0042] When the door cover 12 is opened (along Figure 6 When the door cover 12 rotates around its rotation axis 12a, the support element is driven to rotate along the direction opposite to the direction I shown in FIG. Figure 6 The second connecting rod 80 moves in the opposite direction of the middle J direction, and at this time, the second connecting rod 80 is out of contact with the bottom surface part 11, and the second connecting rod 80 or the first connecting rod 70 is under the action of a spring (or the first gear 70a or the second gear 80a is under the action of a torsion spring), and the second connecting rod 80 moves along Figure 6 The J direction is away from the inside of the developing unit 41, and the first connecting rod 70 is along Figure 6 The J direction shown approaches the interior of the developing unit 41 and finally returns to Figure 5 In the state shown, the process box can be taken out from the supporting element 13.

[0043] Embodiment 4:

[0044] In this embodiment, the structure and connection relationship of the processing box that are the same as those of the second embodiment, and the structure and connection relationship of the image forming device that are the same as those of the third embodiment are not described again.

[0045] like Figure 8 As shown, when the process cartridge is mounted on the image forming device, the second power applying element A60 is located above the developing unit 41 of the process cartridge. The control unit includes a first gear element 140, a second gear element 150 and a third gear element 160 arranged in the developing unit 41 of the process cartridge; and the first gear element 140, the second gear element 150 and the third gear element 160 are all provided with gears; a swing rod 140a is arranged on the first gear element 140, and the swing rod 140a can control the rotation of the first gear element 140; the gear on the second gear element 150 meshes with the gear on the first gear element 140 and transmits power; the gear on the third gear element 160 meshes with the gear on the second gear element 150 and transmits power; and a cam portion 160a is arranged on the third gear element 160, and the cam portion 160a can rotate with the third gear element 160.

[0046] like Figure 8As shown, when the process cartridge is installed on the image forming device, in the horizontal direction, the swing rod 140a partially overlaps with the second power applying element A60; and at this time, the developing element 42 is in contact with the photosensitive element 32. Fig. 9 When the second power applying element A60 moves in the N direction, the second power applying element A60 contacts the swing rod 140a and causes the swing rod 140a to drive the first gear element 140 along the Fig. 9 The cam portion 160a rotates along the P direction as shown, and the second gear element 150 and the third gear element 160 rotate successively, and the ... Fig. 9 The cam portion 160 a rotates in the direction of the arrow P. At this time, the cam portion 160 a does not abut against the photosensitive unit 31 , so the developing element 42 still keeps in contact with the photosensitive element 32 .

[0047] After the swing rod 140a passes around the "hook"-shaped portion of the second power applying element A60, the second power applying element A60 does not provide force to the swing rod 140a, and the first gear element 140 rotates along the Q direction to the position where the first gear element 140 is located under the action of an elastic element (such as a torsion spring wound around the first gear element, not shown in the figure). Fig.10 In the position shown, the second gear element 150 and the third gear element 160 are also successively driven by the elastic element to rotate; at this time, the cam portion 160a is not in contact with the photosensitive unit 31, and the developing element 42 maintains contact with the photosensitive element 32.

[0048] When the second power applying element A60 is Fig.11 When the second power applying element A60 moves in the direction of arrow R, the second power applying element A60 drives the swing rod 140a to rotate in the direction of arrow Q shown in the figure, and the second gear element 150 and the third gear element 160 rotate respectively, and the third gear element rotates in the direction of arrow Q shown in the figure, so that the cam portion 160a squeezes the photosensitive unit 31 and causes the developing unit 41 to rotate around the rotating shaft 46b. At this time, the developing element 42 is not in contact with the photosensitive element 32 (separated). When the second power applying element A60 continues to move in the direction of arrow R, the swing rod 140a is separated from the second power applying element A60, and the developing unit 41 returns to the position under the action of the elastic element 95. Figure 8 At this time, the process cartridge can be removed from the image forming device.

[0049] In this embodiment, an elastic element may also be provided on the swing rod 140a. When the swing rod 140a is separated from the second power applying element A60, the swing rod 140a may also return to the position under the action of the elastic element (such as a torsion spring wound on the first gear element, not shown in the figure). Figure 8 Status shown.

[0050] The rotation axes of the first gear element 140 , the second gear element 150 and the third gear element 160 are all parallel to the axial direction of the developing element 42 .

[0051] Embodiment five:

[0052] In this embodiment, the same structure and connection relationship on the processing box as in the first embodiment, and the same structure and connection relationship on the image forming device as in the fourth embodiment are not described again.

[0053] like Fig.12 As shown, a push rod 110 and a push rod 120 are provided on the developing unit 41 on the processing box; a rotating shaft 110a is provided on the push rod 110, and a rotating shaft 120a is provided on the push rod 120, and the push rod 110 and the push rod 120 are connected by a hinge 110b; the push rod 110 and the push rod 120 are both provided on the developing unit 41; one end of the push rod 120 is connected to the push rod 110, and the other end extends toward the direction of the photosensitive unit 31; the push rod 110 extends out of the developing unit 41.

[0054] When the second power applying element A60 is Fig.13 When moving in the S direction as shown, the second power applying element A60 abuts against the push rod 110 and causes the push rod 110 to rotate around the rotating shaft 110a in the T direction as shown. The push rod 110 drives the push rod 120 to rotate, and the other end 120b of the push rod 120 moves away from the photosensitive unit 31.

[0055] The inner side of the "hook"-shaped portion of the second power applying element A60 abuts against the push rod 110, and the second power applying element A60 moves along the Fig.14 When moving in the X direction, the second power applying element A60 drives the push rod 110 along Fig.14 As shown, the push rod 120 rotates in the Y direction. At this time, the push rod 120 is driven to rotate, and the other end 120 b of the push rod is pressed against the photosensitive unit 31 , so that the developing unit 41 rotates around the rotating shaft 46 b, and the developing element 42 moves away from the photosensitive element 32 .

[0056] When the second power applying element A60 is out of contact with the push rod 110, the push rod 110 returns to its original position under the action of an elastic element (such as a spring or a torsion spring). Fig.12 The state shown can also be restored to the state shown under the action of the elastic element 95. Fig.12 Status shown.

[0057] Embodiment six:

[0058] In this embodiment, the same structure and connection relationship on the processing box as in the fourth embodiment, and the same structure and connection relationship on the image forming device as in the fourth embodiment are not described again.

[0059] like Fig.15As shown, the developing unit 41 of the processing box is provided with a first pressure rod 240, a second gear element 250 and a third gear element 260; the first pressure rod 240 is provided with a rack portion 240a, the rack portion 240a is engaged with the second gear element 250, and the second gear element 250 is engaged with the third gear element 260; the third gear element 260 is provided with a cam portion 260; the first pressure rod 240 extends out of the developing unit 41, and a slope is also provided on it.

[0060] When the processing box is installed in the image forming device, the inclined surface on the first pressure rod 240 abuts against the second power applying element A60 on the image forming device, and the second power applying element A60 causes the first pressure rod 240 to move in the direction a shown in the figure (the first pressure rod 240 moves toward the developing unit 41). Since the rack portion 240a on the first pressure rod 240 is engaged with the second gear element 250, and the second gear element 250 is engaged with the third gear element 260, the movement of the first pressure rod 240 in the direction a is converted into the rotation of the third gear element 260 in the direction b shown in the figure through the second gear element 250 and the third gear element 260, so that the cam portion 260a on the third gear element 260 is engaged with the photosensitive unit 31, so that the developing unit 41 rotates around the rotating shaft 46b, and the developing unit 41 is therefore away from the photosensitive unit 31, so that the developing element 42 does not contact the photosensitive element 32.

[0061] When the inclined surface of the first pressure rod 240 on the processing box is no longer engaged with the second power applying element A60, the developing unit 41 approaches the photosensitive unit 31 under the elastic force of the elastic element 95, and the photosensitive unit 31 abuts against the cam portion 260a and returns the first pressure rod 240 to the position through the third gear element 260, the second gear portion 250 and the rack portion 240a. Fig.15 The state shown (ie, the first pressing rod 240 moves in the direction of extending out of the developing unit 41).

[0062] In this embodiment, in order to better enable the first pressure rod 240 to extend out of the developing unit 41, an elastic element can also be provided on the first pressure rod 240, and the elastic element provides an elastic restoring force for the first pressure rod 240, so that the first pressure rod 240 is always affected by the elastic restoring force and extends out of the developing unit 41.

[0063] Embodiment seven:

[0064] In this embodiment, the same structure and connection relationship on the processing box as in the fifth embodiment, and the same structure and connection relationship on the image forming device as in the fifth embodiment are not described again.

[0065] like Fig.16As shown, a first pressure rod 240 and a second push rod 210 are provided on the developing unit 41 of the processing box; the first pressure rod 240 can move along the direction a shown in the figure on the developing unit 41, and an inclined surface is provided on the first pressure rod 240; the second push rod 210 rotates around the rotating shaft 210a provided on the developing unit around the direction c shown in the figure.

[0066] When the process cartridge is mounted on the image forming device, the inclined surface on the first pressure rod 240 abuts against the second power applying element A60 on the image forming device, and the first pressure rod 240 moves toward the developing unit 41 along the direction a shown in the figure; thereby the first pressure rod 240 abuts against the second push rod 210, and the second push rod 210 rotates around the rotation axis 210a along the direction c shown in the figure, so that the second push rod 210 abuts against the photosensitive unit 31. After the second push rod 210 abuts against the photosensitive unit 31, the developing unit 41 rotates around the rotation axis 46b, so that the developing unit 41 is away from the photosensitive unit 31.

[0067] When the first pressure rod 240 is no longer in contact with the second force applying element A60, the developing unit 41 moves toward the direction close to the photosensitive unit 31 under the action of the elastic element 95, so that the second push rod 210 rotates around the rotating shaft 210a in the opposite direction of the illustrated direction c, and drives the first pressure rod 240 to move in the opposite direction of the illustrated direction a, so that the first pressure rod 240 moves away from the developing unit 41.

[0068] In this embodiment, in order to better enable the first pressure rod 240 to extend out of the developing unit 41, an elastic element can also be provided on the first pressure rod 240, and the elastic element provides an elastic restoring force for the first pressure rod 240, so that the first pressure rod 240 is always affected by the elastic restoring force and extends out of the developing unit 41.

[0069] Embodiment eight:

[0070] like Figure 17-27 Another embodiment of the present invention is shown, in which the structures of the process cartridge and the image forming apparatus are different from those of the above-described embodiment.

[0071] like Fig.17 As shown in the patent US9836020B2, an image forming device is described, on which a spacing element 71 and a spring 73 are provided; the spacing element 71 rotates around a support shaft 74, and the spring provides an elastic restoring force for the spacing element 71, so that the spacing element 71 always keeps moving along the axis of rotation. Fig.17The working mode of the image forming device is described in US Pat. No. 9,836,020 B2. The processing box includes a developing unit 41 and a photosensitive unit 31; a photosensitive element 32 is arranged on the photosensitive unit 31; a developing element 42 and a protrusion 44d are arranged on the developing unit 41; when the protrusion 44d is engaged with the spacing element 71, the spacing element 71 causes the protrusion to drive the developing unit 41 to rotate around the rotating shaft 46b on the developing unit 41, and the developing element 42 is away from the photosensitive element 32; when the spacing element 71 is not engaged with the protrusion 44d, the developing unit 41 rotates around the rotating shaft 46b under the action of the elastic element 95, and the developing element 42 approaches and contacts the photosensitive element 32.

[0072] like Fig.17 As shown, when the protrusion 44d is configured as shown in the figure, the protrusion 44d will exert a force F1 on the spacer element 71, and the two components of the force F1 are F1x and F1y, wherein F1y causes the spacer element 71 to have a Fig.17 The tendency of downward movement shown in the figure may cause the spacer element 71 to be out of engagement with the protrusion. The structural arrangement of the processing box and the protrusion in this embodiment is to solve this risk. The specific solution of this embodiment is as follows:

[0073] Solution 1 of this embodiment:

[0074] like Figures 18a-21b The illustrated embodiment is scheme 1 of this embodiment.

[0075] like Fig.18a , 18b As shown, the processing box is provided with a protrusion 44d and a force-bearing element 45; the protrusion 44d is also provided with a blocking element 44b and a slide groove 44c; the force-bearing element 45 is provided with an inclined surface 45a, a rotating shaft 45b and a force-bearing surface 45c.

[0076] The rotating shaft 45b of the force-bearing element 45 is connected to the slide groove 44c, and the rotating shaft 45b can move up and down in the slide groove 44c; as shown in the figure, the force-bearing element 45 can rotate around the rotating shaft 45b, and the center of gravity of the force-bearing element 45 is away from the rotating shaft 45b and close to the blocking element 44b (with a tendency to rotate clockwise), so the blocking element 44b can abut against the force-bearing surface 45c (to prevent the force-bearing element 45 from rotating clockwise) and ensure that the force-bearing surface 45c is in a vertical state during the process of installing the processing box to the image forming device; the inclined surface 45a on the force-bearing element 45 is arranged below it in the vertical direction; the force-bearing surface 45c can engage with the spacer element 71 and receive the thrust from the spacer element 71.

[0077] When the process box Fig.18aAfter being installed in the image forming device in the direction indicated by the middle arrow, the force-bearing element 45 is installed to the right side of the spacing element 71, and the inclined surface 45a is not in contact with the spacing element 71; under the action of the blocking element 44b, the force-bearing surface 45c of the force-bearing element 45 is in a vertical state.

[0078] When the spacing element 71 is Fig.19a , 19b When moving in the direction of the arrow shown, the spacing element 71 abuts against the inclined surface 45a, and causes the force-bearing element 45 to rotate around the rotating shaft 45b, and the rotating shaft 45b slides upward along the slide groove 44c, and the blocking element 44b is out of contact with the force-bearing surface 45c; at this time, although the spacing element 71 is affected by the gravity from the force-bearing element 45, due to the limited weight of the force-bearing element 45, the force-bearing element 45 cannot overcome the elastic force of the spring 73, and therefore the spacing element 71 will not rotate downward.

[0079] When the spacing element 71 moves to Fig.20a , 20b In the state shown, the spacer element 71 is on the right side of the force-bearing element 45, and at this time the force-bearing element returns to the state shown in the figure under the action of gravity. At this time, the force-bearing surface 45c is in a vertical state, the rotating shaft 45b is at the lower end in the slide groove 44c, and the force-bearing element 45 returns to its initial state.

[0080] When the spacing element 71 is Fig.21a , 21b When the arrow shown approaches the force-bearing element 45 and engages with the force-bearing surface 45c, the spacer element 71 gives the force-bearing element 45 a thrust, causing the force-bearing element 45 to move to the left; since the height of the shaft 45b in the vertical direction is lower than the height of the top of the spacer element 71, when the force-bearing element 45 is thrusted by the spacer element 71, the force-bearing element 45 will not rotate around the shaft 45b in the counterclockwise direction as shown in the figure, so the shaft 45b on the force-bearing element 45 pushes the slide 44c to make the protrusion 44d move to the left (the shaft 45b rotates relative to the slide 44c), so the developing unit 41 rotates clockwise around the shaft 46b at this time, so that the developing element 42 moves away from the photosensitive element 32, and the developing element 42 rotates from a state of contact with the photosensitive element 32 to a state of non-contact. Since the force-bearing element 45 can rotate around the rotation axis 45 b , the force-bearing surface 45 c is always in a vertical state during the process in which the spacing element 71 pushes the force-bearing element 45 , and the force-bearing element 45 does not apply vertical force to the spacing element 71 .

[0081] Therefore, scheme one of the present embodiment overcomes the defects of the prior art, not only making the structure of the processing box simple, but also not pushing the spacing element on the image forming device to cause the spacing element to move downward, and the force-bearing surface of the force-bearing element always remains in a vertical state during the process of receiving the thrust of the spacing element.

[0082] Solution 2 of this embodiment:

[0083] like Figures 22a-25b This is the second solution of this embodiment.

[0084] like Fig.22a , 22b As shown, the protrusion 144d is provided with a blocking element 144b and a slide groove 144c. The force-bearing element 145 is provided with a bottom surface 145a, a rotating shaft 145b and a force-bearing surface 145c. The bottom surface 145a is arranged below the force-bearing element 145; the rotating shaft 145b is connected to the slide groove 144c (in this solution, the rotating shaft 145b can be set to slide in the slide groove 144c, or can be set to not slide in the slide groove 144c), and the force-bearing element 145 can rotate around the rotating shaft 145b; the force-bearing surface 145c is arranged on one side of the force-bearing element 145. When the processing box is in the state shown in the figure, the force-bearing surface 145c is in a vertical state; the rotating shaft 145b is arranged at the left end of the force-bearing element 145, so the force-bearing element 145 has a tendency to rotate clockwise, and the blocking element 144b abuts against the force-bearing element 145 to prevent the force-bearing element 145 from rotating clockwise.

[0085] When the process box Fig.22a , 22b When the process cartridge is installed in the image forming device in the direction of the arrow and the bottom surface 145a is not in contact with the spacing element 171, the force-bearing surface 145c is not subjected to force from outside the process cartridge, and therefore the force-bearing surface 145c is in a vertical state.

[0086] like Fig.23a As shown, the rotating shaft 145b is set to be unable to slide in the sliding groove 144c. When the processing box continues to move downward in the direction of the arrow in the figure to the final state and cannot move downward further, the spacing element 171 abuts against the bottom surface 145a, and the force-bearing element 145 rotates around the rotating shaft 145b to the state shown in the figure. Since the weight of the force-bearing element 145 is small, the force exerted by the force-bearing element 145 on the spacing element 171 is smaller than the elastic force of the spring 173, so the spacing element 171 will not be pushed downward.

[0087] like Figure 23b As shown, the rotating shaft 145b is configured to slide in the slide groove 144c. When the processing box continues to move downward in the direction of the arrow in the figure to the final state and cannot move downward further, the spacing element 171 abuts against the bottom surface 145a, and the force-bearing element 145 moves upward under the action of the spacing element 171, and the force-bearing surface 145c remains in a vertical state. Since the weight of the force-bearing element 145 is small, the force exerted by the force-bearing element 145 on the spacing element 171 is smaller than the elastic force of the spring 173, so the spacing element 171 will not be pushed downward.

[0088] like Fig.24a , 24b As shown, when the spacing element 171 moves rightward along the direction of the arrow to the state shown in the figure, the force-bearing element 145 returns to the state shown in the figure, and the force-bearing surface 145c is in a vertical state.

[0089] like Fig.25a , 25b As shown, when the spacer element 171 moves to the left along the arrow direction, since the height of the top of the spacer element 71 in the vertical direction is higher than the height of the shaft 145b in the vertical direction, when the spacer element 171 contacts the force-bearing surface 145c, the spacer element 171 provides thrust to the force-bearing element 145, so that the shaft 145b on the force-bearing element 145 pushes the slide 144c, and the shaft 145b rotates relative to the slide 144c. At this time, the developing unit 41 rotates clockwise around the shaft 46b, and the developing element 42 moves away from the photosensitive element 32, so that the developing element 42 rotates from the contact state with the photosensitive element 32 to the non-contact state. Since the force-bearing element 145 can rotate around the shaft 145b, during the process of the spacer element 171 providing thrust to the force-bearing element 145, the force-bearing surface 145c is always kept in a vertical state, and the force-bearing element 45 does not apply vertical force to the spacer element 71.

[0090] Solution 3 of this embodiment:

[0091] The structures in this scheme that are the same as those in the above-mentioned schemes 1 and 2 will not be described again here.

[0092] like Fig.26 , 27 As shown, the spacing element 271 is also provided with a convex point 271a; the force-bearing element 245 is also provided with a convex point 245d; the distance that the convex point 271a on the spacing element extends from the spacing element 271 is substantially the same as the distance that the convex point 245d on the force-bearing element extends from the force-bearing element 245. When the spacing element 271 abuts against the force-bearing surface 245c, the convex point 271a on the spacing element abuts against the plane on the force-bearing surface 245c, while the convex point 245d on the force-bearing element 245 abuts against the plane on the spacing element 271, so that when the spacing element 271 provides thrust to the force-bearing surface 245c, the force-bearing surface 245c is always kept in a vertical state.

Claims

1. A processing box, comprising a developing unit and a photosensitive unit; the developing unit comprises a developing element, and the photosensitive unit comprises a photosensitive element, wherein: The processing box also includes: A control unit, the control unit comprising a control element, when the control element is close to or away from the developing unit, the developing element is away from or close to the photosensitive element; an elastic element, disposed on the control element, for providing an elastic restoring force for the control element; The control unit comprises a first gear element, a second gear element and a third gear element arranged in the developing unit of the processing box; and the first gear element, the second gear element and the third gear element are all provided with gears; a swing rod is arranged on the first gear element, and the swing rod can control the rotation of the first gear element; the swing rod is a control element; the gear on the second gear element meshes with the gear on the first gear element and transmits power; the gear on the third gear element meshes with the gear on the second gear element and transmits power; a cam part is arranged on the third gear element, and the cam part can rotate with the third gear element; the rotation of the swing rod controls the cam part to abut or not abut against the photosensitive unit, thereby controlling the developing element and the photosensitive element to move away from or close to each other; Or, the control unit includes a push rod and a push rod; the push rod is a control element; a rotating shaft is provided on the push rod, a rotating shaft is provided on the push rod, and the push rod and the push rod are connected by a hinge; the push rod and the push rod are both provided on the developing unit; one end of the push rod is connected to the push rod, and the other end extends toward the direction of the photosensitive unit; the push rod extends out of the developing unit; the rotation of the push rod around its rotating shaft controls the rotation of the push rod, so that the push rod does not abut or squeeze the photosensitive unit, so that the developing element is close to or away from the photosensitive element; Or, the control unit includes a first pressure rod, a second gear element and a third gear element; the first pressure rod is provided with a rack portion, the rack portion is meshed with the second gear element, and the second gear element is meshed with the third gear element; the third gear element is provided with a cam portion; the first pressure rod extends out of the developing unit, and a slope is also provided on the first pressure rod; the first pressure rod is a control element; the first pressure rod receives an external force to make the first pressure rod approach or move away from the developing unit, so that the cam portion is meshed or not meshed with the photosensitive unit, thereby controlling the developing element to move away from or approach the photosensitive element; Or, the control unit includes a first pressure rod and a second push rod; the first pressure rod is a control element; the first pressure rod is movable on the developing unit, and is provided with an inclined surface; the second push rod rotates around a rotating shaft provided on the developing unit; the first pressure rod receives an external force to make the first pressure rod approach or move away from the developing unit, so that the second push rod abuts or does not abut against the photosensitive unit, thereby controlling the developing element to move away from or close to the photosensitive element.

2. A process cartridge according to claim 1, characterized in that: The control unit includes a control element, which can move between a first position and a second position; when the control element is in the first position, the control element is away from the developing unit, and the photosensitive element and the developing element are in contact; when the control element is in the second position, the control element is closer to the developing unit than when the control element is in the first position, and the developing element is not in contact with the photosensitive element.

3. A process cartridge according to claim 1, characterized in that: The control unit includes a control element, which can move between a first position and a second position; when the control element is in the first position, the control element is away from the developing unit, and the developing element is close to the photosensitive element; when the control element is in the second position, the control element is closer to the developing unit than when the control element is in the first position, and the developing element is away from the photosensitive element.

4. A process cartridge according to claim 2 or 3, characterized in that: The control element is arranged on the developing unit and extends out of the developing unit to receive external force.

Images