Processing box

Abstract

A processing box is detachably arranged in imaging equipment and comprises a developing unit, a drum unit, a driving assembly and a forced pushing part, the developing unit comprises a developing frame and a developing roller, the developing frame is enclosed to form a powder bin for storing a developing agent, and the developing roller is rotatably arranged on the developing frame; the drum unit comprises a drum frame and a photosensitive drum, and the photosensitive drum is rotatably arranged on the drum frame; the driving assembly is located at one end of the processing box in the length direction, the end opposite to the end where the driving assembly is located is a non-driving end, the end, where the driving assembly is located, of the processing box is further provided with a driving end side cover, and the non-driving end is provided with a non-driving end side cover. The forced pushing piece is arranged on at least one of the driving end side cover and the non-driving end side cover in a sliding manner, and is used for forcing the developing roller and the photosensitive drum to be separated along with the mutual separation of the developing frame and the drum frame after receiving force; the driving end side cover is provided with a notch part, and the notch part is used for exposing at least one part of the driving assembly.

Description

Technical Field

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

[0002] A processing box is a consumable widely used in electronic photographic imaging devices (hereinafter referred to as "imaging devices"). A conventional processing box includes a developer box and a drum box. The developer roller in the developer box is in contact with the photosensitive drum in the drum box. During the operation of the imaging device, the developer in the developer box is transferred to the surface of the photosensitive drum through the developer roller, so that the electrostatic latent image on the surface of the photosensitive drum is developed.

[0003] In order to avoid premature wear of the developing roller and the photosensitive drum due to long-term contact between the developing roller and the photosensitive drum, the existing processing box is provided with a pushing member. When the imaging device is not developing, the pushing member receives the separation force in the imaging device to separate the developing roller and the photosensitive drum. Specifically, the separation component provided in the imaging device pushes the pushing member to rotate the developing box connected to the pushing member, thereby separating the developing roller and the photosensitive drum. In the process of separating the developing roller and the photosensitive drum, since the pushing member rotates together with the developing box, the separation member and the pushing member are easily detached, resulting in failure of separation of the developing roller and the photosensitive drum. Utility Model Content

[0004] The utility model provides a processing box to solve the above technical problems. The technical solution of the processing box is as follows:

[0005] A processing box is detachably arranged in an imaging device, the processing box comprising a developing unit, a drum unit, a driving assembly and a pushing member; the developing unit comprises a developing frame and a developing roller, the developing frame encloses a powder bin for storing a developer, and the developing roller is rotatably arranged on the developing frame; the drum unit comprises a drum frame and a photosensitive drum, the photosensitive drum is rotatably arranged on the drum frame, and the developing frame and the drum frame are arranged along the width direction of the processing box; the driving assembly is located at one end of the processing box in the length direction, and the end opposite to the end where the driving assembly is located is a non-driving end, and a driving end side cover is also provided at the end where the driving assembly is located on the processing box, and a non-driving end side cover is provided on the non-driving end; the pushing member is slidably arranged on at least one of the driving end side cover and the non-driving end side cover, and is used for forcing the developing roller and the photosensitive drum to separate as the developing frame and the drum frame separate from each other after receiving a force; a notch portion is provided on the driving end side cover, and the notch portion is used to expose at least a part of the driving assembly.

[0006] The driving assembly includes a first coupling and a second coupling, the first coupling is used to receive the driving force from the imaging device to directly or indirectly drive the photosensitive drum to rotate, and the second coupling is used to receive the driving force from the imaging device to directly or indirectly drive the developing roller to rotate; a portion of the second coupling is exposed through a notch on the driving end side cover; the notch portion is not closed along a direction perpendicular to the length direction of the processing box.

[0007] The driving end side cover comprises a side cover body and a guide portion, wherein the side cover body is used to connect the drum unit and the developing unit, and the guide portion is used to be slidably connected with the pushing member.

[0008] The developing unit further comprises a developing support and a developing protective cover arranged at the driving end, the developing protective cover cooperates with the developing support and is used to protect the second coupling; the developing protective cover comprises a protective cover body and a barrel portion, the barrel portion extends from the protective cover body in a direction away from the developing frame, and a part of the second coupling is exposed through the barrel portion; the first coupling comprises a first neck portion and a first meshing portion, one end of the first neck portion is connected to the photosensitive drum, and the other end is connected to the first meshing portion, the first meshing portion is used to receive a driving force from the imaging device, and the diameter of the first neck portion is the same as the diameter of the barrel portion. The notch portion is provided with a notch portion side wall, and the notch portion side wall is spaced from the barrel portion.

[0009] The guide portion includes a sliding rail, a connecting portion and a limiting portion, wherein the connecting portion connects the side cover body and the sliding rail, the sliding rail is used to cooperate with the forced push member, and the limiting portion is arranged on the sliding rail to prevent the forced push member from being separated from the sliding rail when sliding along the rail. The guide portion is also provided with a gap that allows the sliding rail to deform, and along the direction in which the forced push member intersects with the sliding direction of the sliding rail, the projection of the gap overlaps with the projection of the limiting portion.

[0010] The forced pushing member includes a forced pushing member body and a sliding portion, the sliding portion is used to cooperate with the sliding guide rail, the forced pushing member body is used to receive the separation force from the imaging device to make the forced pushing member slide; the forced pushing member body is also used to transmit the separation force to the developing unit.

[0011] When the pushing member body receives the separation force, the developing unit rotates around the rotation axis, the pushing member body has a first projection area along the height direction of the process cartridge, and the rotation axis of the developing unit is located outside the first projection area. The first coupling rotates around the rotation axis, and along the width direction of the process cartridge, the rotation axis of the developing unit is located between the first projection area and the rotation axis of the first coupling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional diagram of the processing box involved in the utility model.

[0013] Figure 2It is a three-dimensional view of the processing box involved in the utility model observed from another angle.

[0014] Figure 3 This is an exploded view of the end portion of the processing box A1 involved in the present utility model.

[0015] Figure 4 It is a three-dimensional view of the guide part of the driving end side cover involved in the utility model.

[0016] Figure 5 It is a three-dimensional diagram of the forced pushing member involved in the utility model.

[0017] Figure 6 It is a side view of the A1 end of the processing box involved in the utility model observed along the first direction. DETAILED DESCRIPTION

[0018] Figure 1 This is a three-dimensional diagram of the processing box involved in the utility model; Figure 2 A three-dimensional view of the processing box of the utility model observed from another angle; Figure 3 This is an exploded view of the end portion of the processing box A1 involved in the utility model; Figure 4 It is a three-dimensional diagram of the guide part of the driving end side cover involved in the utility model; Figure 5 This is a three-dimensional diagram of the forced push member involved in the utility model; Figure 6 It is a side view of the A1 end of the processing box involved in the utility model observed along the first direction.

[0019] like Figure 1 As shown, the utility model provides a processing box 1, which is detachably arranged in an imaging device, and the processing box 1 includes a developing unit, a drum unit, a pushing member 90 and a driving assembly. The driving assembly is arranged at one end of the processing box 1 in the length direction, and the driving assembly includes a first coupling 51 and a second coupling 52. The first coupling 51 is used to receive a driving force from the imaging device to directly or indirectly drive the following photosensitive drum to rotate, and the second coupling 52 is used to receive a driving force from the imaging device to directly or indirectly drive the following developing roller to rotate. In the processing box 1, the side where the driving assembly is located is the driving end, and the side opposite to the driving end along the length direction of the processing box 1 is the non-driving end.

[0020] The developing unit includes a developing frame 21 and a developing roller. The developing frame 21 encloses a powder bin for storing developer. The developing roller is rotatably arranged on the developing frame 21. The developing roller is used to transport the developer in the powder bin to the surface of the photosensitive drum to develop the electrostatic latent image on the surface of the photosensitive drum. The drum unit includes a drum frame 20, a photosensitive drum and a cleaning blade. The photosensitive drum is rotatably arranged on the drum frame 20. The cleaning blade is arranged on the drum frame 20. The photosensitive drum contacts the cleaning blade. The cleaning blade is used to remove the residual developer on the surface of the photosensitive drum. The drum frame 20 encloses a waste powder bin for accommodating the residual developer. The processing box 1 also includes a side cover. The side cover is rotatably connected to the developing unit. Preferably, two side covers are provided and are respectively provided at both ends of the length direction of the processing box 1. It is defined herein that the side cover disposed at the driving end of the drum frame 20 is the driving end side cover 11, and the side cover disposed at the non-driving end of the drum frame 20 is the non-driving end side cover 16; the pushing member 90 is slidably mounted on the processing box 1, and the pushing member 90 is disposed on at least one of the two side covers; under the separation force applied by the imaging device, the pushing member 90 forces the developing roller and the photosensitive drum to separate as the developing frame and the drum frame separate from each other. A notch portion 115 is disposed on the driving end side cover 11 in a direction perpendicular to the length direction of the processing box, and the notch portion 115 exposes at least a portion of the driving assembly.

[0021] In order to facilitate the description of the process cartridge 1, Figure 1 The attitude of the processing box 1 is based on the definition that the processing box 1 has Figure 1 The first direction, the second direction and the third direction shown, the first direction, the second direction and the third direction intersect, preferably, the first direction, the second direction and the third direction are perpendicular to each other; the length direction is the first direction, the width direction is the second direction, and the height direction is the third direction.

[0022] like Figure 1 As shown, the length direction of the processing box 1 is the first direction. Along the first direction, the processing box 1 has an A1 end and an A2 end that are relatively set and spaced from each other. The drive side end cover 13 is located at the A1 end, and the non-drive side end cover 16 is located at the A2 end. In the second direction, the processing box 1 has a B1 end and a B2 end that are relatively set and spaced from each other. The developing frame 21 and the drum frame 20 are arranged along the second direction (width direction), and the developing frame 21 is located at the B1 end, and the drum frame 20 is located at the B2 end. In the third direction, the processing box 1 has a C1 end and a C2 end that are relatively spaced from each other. The drum frame 20 is provided with a handle 2, which is provided at the C1 end. The end opposite to the end where the handle 2 is located is the C2 end. The first coupling 51 is closer to the C2 end than the second coupling 52.

[0023] like Figure 1 and Figure 3As shown, in this embodiment, the developing unit further includes a developing support 13 and a developing cover 12 disposed at the A1 end, the developing support 13 is disposed at the A1 end of the developing frame 21, a portion of the second coupling 52 protrudes from the side of the developing support 13 away from the developing frame 21; the developing cover 12 cooperates with the developing support 13, and the developing cover 12 accommodates the second coupling 52 to play a protective role. The developing cover 12 includes a cover body 122 and a barrel 123, one end of the cover body 122 is connected to the developing support 13, and the other end extends toward the A1 direction, along the first direction, the barrel 123 extends from the cover body 122 in a direction away from the developing frame 2, in the first direction, the barrel 123 is provided with a second through hole 122a, the second through hole 122a passes through the cover body 122, and a portion of the second coupling 52 passes through the barrel 123 and protrudes out of the developing cover 12.

[0024] The developer cover 12 is connected to the drive end side cover 11. Specifically, a rotating portion 121 is provided on the developer cover 12, and the rotating portion 121 is closer to the B1 end than the barrel portion 123. The rotating portion 121 is rotatably connected to the receiving portion 114 provided on the drive end side cover 11, and the developer unit can rotate around the rotation axis L passing through the receiving portion 114 and the rotating portion 121. Optionally, the rotating portion 121 is a connecting column, and the receiving portion 114 is a connecting bearing. The connecting column 121 is rotatably supported by the connecting bearing 114, and the rotation axis of the connecting column 121 is coaxial with the rotation axis of the developer unit; the connecting column 121 and the connecting bearing 114 are interchangeable.

[0025] like Figure 3 As shown, in this embodiment, the driving end side cover 11 includes a side cover body 110 and a guide portion 111. In a first direction, a projection of a portion of the side cover body 110 coincides with a projection of a portion of the developing unit. The side cover body 110 is used to connect the drum unit and the developing unit. The guide portion 111 extends from the side cover body 110 toward the direction of A2. The guide portion 111 is used to be slidably connected to the pushing member 90.

[0026] like Figure 3 and Figure 6 As shown, the side cover body 110 is further provided with a first through hole 113 and a notch 115. Along a direction perpendicular to the first direction, the notch 115 is not closed, a portion of the first coupling 51 is exposed through the first through hole 113, and a portion of the second coupling 52 is exposed through the notch 115, so that the first coupling 51 and the second coupling 52 can engage with the driving force output head on the imaging device, so that the processing box 1 receives the driving force from the imaging device.

[0027] The first coupling 51 includes a first neck portion 511 and a first engaging portion 512, wherein one end of the first neck portion 511 is connected to the photosensitive drum, and the other end is connected to the first engaging portion 512, and the first engaging portion 512 is used to engage with the driving force output head on the imaging device. In the present design, the diameter of the first neck portion 511 is the same as the diameter of the barrel portion 123 on the developing cover 12, so as to simplify the structure of the processing box 1; the notch portion 115 is formed by cutting off a portion of the driving end side cover 13, a portion of the developing cover 12 is exposed to the notch portion 115, and the barrel portion 123 is exposed through the notch portion 115; the notch portion 115 is provided with a notch portion side wall 11a, and the notch portion side wall 11a is spaced from the barrel portion 123, and when the pushing member 90 receives the separation force from the imaging device to push the developing unit to rotate, the notch portion side wall 11a will not cause any obstruction to the rotating barrel portion 123.

[0028] like Figure 3 and Figure 6 As shown, the projection of the pushing member 90 in the third direction does not coincide with the projection of the rotation axis L of the developing unit in the third direction. The pushing member 90 is arranged at a position opposite to the developing unit and is located between the driving end side cover 11 and the developing frame 21, and is slidably supported by the guide portion 111.

[0029] Specifically, the guide portion 111 includes a sliding guide rail 1111, a connecting portion 1112 and a limiting portion 1113. The connecting portion 1112 connects the side cover body 110 and the sliding guide rail 1111. Specifically, the connecting portion 1112 extends from the side cover body 110 in the A2 direction, and the sliding guide rail 1111 continues to extend from the connecting portion 1112 in the A2 direction. The sliding guide rail 1111 is used to cooperate with the forced push member 90; the limiting portion 1113 is arranged on the sliding guide rail 1111 to prevent the forced push member 90 from disengaging from the sliding guide rail 1111 when sliding along the guide rail 1111. Optionally, the limiting portion 1113 is a protrusion extending along the first direction, and the limiting member 1113 is provided with a guiding surface 1113a. Along the B1 direction, the distance between the guiding surface 1113a and the sliding guide rail 1111 in the first direction gradually increases. Furthermore, a gap 1114 is provided on the guide portion 111 to allow the sliding guide rail 1111 to deform. The gap 1114 is provided at the A2 end of the connecting portion 1112, and the projection of the gap 1114 overlaps with the projection of the limiting portion 1113 along a direction intersecting with the sliding direction of the pushing member 90 on the sliding guide rail 1111.

[0030] The pushing member 90 includes a pushing member body 91 and a sliding portion 92. The sliding portion 92 is used to cooperate with the sliding guide rail 1111 so that the pushing member 90 can slide on the sliding guide rail 1111. The pushing member body 91 is used to receive the separation force from the imaging device, so that the pushing member 90 slides and pushes the developing unit to rotate around the connecting column 121, thereby separating the developing roller from the photosensitive drum. The sliding portion 92 is arranged on the pushing member body 91. When the pushing member 90 is installed on the processing box 1, the pushing member body 91 is closer to the developing unit than the sliding portion 92.

[0031] Specifically, Figure 3 and Figure 5 As shown, the sliding portion 92 is located at the A1 end of the push member body 91, and the sliding portion 92 is provided with a sliding groove 921, which extends on the sliding portion 92 along the second direction and opens toward the A1 direction, and the sliding groove 921 includes a card interface 921a and a matching portion 921b, and the card interface 921a is closer to the A1 side of the sliding portion 92 than the matching portion 921b. When the sliding portion 92 is assembled on the sliding guide rail 1111 from the B2 end of the sliding guide rail 1111 along the guide surface 1113a The side wall of the sliding groove 921 squeezes the limiting portion 1113, causing the sliding guide rail 1111 to shrink toward the gap 1114, so that the sliding groove 921 passes over the limiting portion 1113, allowing the sliding portion 92 to be smoothly assembled with the sliding guide rail 1111, and the matching portion 921b matches with the guide rail 1111, and the connecting portion 112 is accommodated by the card interface 921a. In the third direction, the size of the card interface 921a is smaller than the size of the matching portion 921b, so that the sliding portion 92 can be snapped onto the sliding guide rail 1111.

[0032] In addition to the design of the sliding guide rail 1111 and the sliding groove 921 in this embodiment, the guide portion 111 can also be set as a guide groove, and correspondingly, the sliding portion 92 can be set as a sliding protrusion. As long as the design can enable the sliding portion 92 to be slidably installed on the guide portion 111, it is a variation of the structure of the sliding portion 92 and the guide portion 92 cooperating in this embodiment.

[0033] The pushing member body 91 includes a force receiving portion 912 and a pushing portion 911. The force receiving portion 912 is arranged on one side of the pushing member body 91, and is used to receive the separation force applied by the separation component provided in the imaging device. The pushing portion 911 is arranged on the other side of the pushing member body 91. Optionally, along a direction perpendicular to the length direction of the processing box 1, the force receiving portion 912 and the pushing portion 911 are relatively arranged on the pushing member body 91.

[0034] like Figure 5 and Figure 6As shown, the force receiving portion 912 is constructed as a plane extending along the third direction, and the pushing portion 911 is constructed as an inclined surface that intersects the second direction and the third direction at the same time. The pushing portion 911 is used to contact the force-bearing inclined surface 124 provided at the C2 end of the developing cover 12 to transfer the force-bearing surface to the developing unit.

[0035] like Figure 3 and Figure 6 As shown, the rotation axis L of the developing unit does not coincide with the rotation axis of the second coupling 52, and the rotation axis L is closer to the B1 end than the force receiving portion 912. Specifically, the pushing member body 91 has a projection area S (referred to as the first projection area) along the third direction (height direction) of the processing box 1, and the rotation axis L of the developing unit is located outside the projection area S, and is located between the rotation axis of the first coupling 51 and the rotation axis of the second coupling 52. Further, the rotation axis L is located between the rotation axis of the first coupling 51 and the projection area S. Compared with the case where the rotation axis L coincides with the rotation axis of the second coupling 52, when the pushing member 90 receives the separation force from the imaging device and drives the developing unit to swing, the swing angle of the developing unit is larger, and at this time, the developing roller and the photosensitive drum 30 are separated more thoroughly.

[0036] When the imaging device is not working, the separation component in the imaging device applies a separation force to the force receiving portion 912, forcing the pushing member 90 to slide along the sliding guide rail 1111 in the direction of B2, and contacting and pushing the force inclined surface 124, so that the developing cover 12 drives the developing unit to rotate around the rotation axis L. Since there is a gap between the force receiving portion 912 and the side wall 11a of the notch portion, the developing unit can be prevented from being obstructed during rotation, and then the developing roller and the photosensitive drum are transformed from the initial contact position to the final separation position.

[0037] Compared with the existing processing box, the forced pushing member 90 on the processing box 1 is arranged on the driving end side cover 11. When the forced pushing member 90 is subjected to the separation force, it will only slide on the driving end side cover 11 along the second direction and will not rotate with the developing unit. This can avoid the situation where the forced pushing member 90 and the separation member are separated when the separation member of the imaging device abuts against the forced pushing member 90. At the same time, since the sliding portion 92 of the forced pushing member 90 is installed on the guide portion 111 of the driving side cover 11, it is used to receive the separation force of the separation member and transmit the separation force to the developing unit. The main body 91 of the forced pushing member is a free part whose size is not restricted by the installation of the guide part 111, so that the setting length of the force receiving part 912 and the pushing part 911 in the first direction can be increased according to needs, that is, in the first direction, the forced pushing member 90 can be set outside the range of the driving end side cover 11, so that the force application surface between the force receiving part 912 and the separation member and the force-bearing inclined surface 124 is larger, and the force application surface between the pushing part 911 and the separation member and the force-bearing inclined surface 124 is also larger, thereby making the processing box 1 more stable when performing the separation work of the developing roller and the photosensitive drum.

Claims

1. A process cartridge, detachably disposed in an imaging device, characterized in that: The processing box includes a developing unit, a drum unit, a driving assembly and a pushing member; the developing unit includes a developing frame and a developing roller, the developing frame is enclosed to form a powder bin for storing developer, and the developing roller is rotatably arranged on the developing frame; the drum unit includes a drum frame and a photosensitive drum, the photosensitive drum is rotatably arranged on the drum frame, and the developing frame and the drum frame are arranged along the width direction of the processing box; the driving assembly is located at one end of the processing box in the length direction, and the end opposite to the end where the driving assembly is located is the non-driving end, and the end where the driving assembly is located on the processing box is also provided with a driving end side cover, and the non-driving end is provided with a non-driving end side cover; the pushing member is slidably arranged on at least one of the driving end side cover and the non-driving end side cover, and is used for forcing the developing roller and the photosensitive drum to separate as the developing frame and the drum frame separate from each other after receiving the force; the driving end side cover is provided with a notch portion, and the notch portion is used to expose at least a part of the driving assembly.

2. The process cartridge according to claim 1, wherein: The driving assembly includes a first coupling and a second coupling, the first coupling is used to receive the driving force from the imaging device to directly or indirectly drive the photosensitive drum to rotate, and the second coupling is used to receive the driving force from the imaging device to directly or indirectly drive the developing roller to rotate; a portion of the second coupling is exposed through a notch on the driving end side cover; the notch portion is not closed along a direction perpendicular to the length direction of the processing box.

3. The process cartridge according to claim 2, wherein: The driving end side cover comprises a side cover body and a guide portion, wherein the side cover body is used to connect the drum unit and the developing unit, and the guide portion is used to be slidably connected with the pushing member.

4. The process cartridge according to claim 2, wherein: The developing unit also includes a developing bracket and a developing cover arranged at the driving end, wherein the developing cover cooperates with the developing bracket and is used to protect the second coupling; the developing cover includes a cover body and a barrel portion, the barrel portion extends from the cover body in a direction away from the developing frame, and a portion of the second coupling is exposed through the barrel portion; the first coupling includes a first neck portion and a first meshing portion, one end of the first neck portion is connected to the photosensitive drum, and the other end is connected to the first meshing portion, the first meshing portion is used to receive a driving force from the imaging device, and the diameter of the first neck portion is the same as the diameter of the barrel portion.

5. The process cartridge according to claim 4, wherein: The notch portion is provided with a notch portion side wall, and the notch portion side wall is spaced apart from the barrel portion.

6. The process cartridge according to claim 3, wherein: The guiding part comprises a sliding rail, a connecting part and a limiting part, wherein the connecting part connects the side cover body and the sliding rail, the sliding rail is used to cooperate with the forced pushing member, and the limiting part is arranged on the sliding rail to prevent the forced pushing member from detaching from the sliding rail when sliding along the rail.

7. The process cartridge according to claim 6, wherein: The guide portion is also provided with a gap that allows the sliding guide rail to deform, and along the direction in which the pushing member intersects with the sliding direction of the sliding guide rail, the projection of the gap overlaps with the projection of the limiting portion.

8. The process cartridge according to claim 6, wherein: The forced pushing member includes a forced pushing member body and a sliding portion, the sliding portion is used to cooperate with the sliding guide rail, the forced pushing member body is used to receive the separation force from the imaging device to make the forced pushing member slide; the forced pushing member body is also used to transmit the separation force to the developing unit.

9. The process cartridge according to claim 8, wherein: When the pushing member body receives the separation force, the developing unit rotates around the rotation axis, the pushing member body has a first projection area along the height direction of the processing box, and the rotation axis of the developing unit is located outside the range of the first projection area.

10. The process cartridge according to claim 9, wherein: The first coupling rotates around a rotation axis, and along the width direction of the process cartridge, the rotation axis of the developing unit is located between the first projection area and the rotation axis of the first coupling.

Images