CN215181427U

CN215181427U - Processing box

Info

Publication number: CN215181427U
Application number: CN202120695814.7U
Authority: CN
Inventors: 万成昌; 刘录军
Original assignee: Zhongshan Sanrun Printing Supplies Co ltd; Ninestar Corp
Current assignee: Zhongshan Sanrun Printing Supplies Co ltd; Ninestar Corp
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-12-14
Anticipated expiration: 2031-04-06

Abstract

The utility model relates to a processing box which can be detachably installed in an electrophotographic imaging device, the processing box comprises a powder bin and a waste powder bin which are hinged with each other, the powder bin comprises a developing piece installed in the powder bin, the waste powder bin comprises a photosensitive piece installed in the waste powder bin, and the developing piece and the photosensitive piece are arranged oppositely; the tail end of the developing piece is provided with a first gear, the tail end of the photosensitive piece is provided with a second gear, and the powder bin is also provided with an intermediate gear meshed with the first gear; the processing box also comprises a forced pushing assembly movably arranged in the waste powder bin; when the process cartridge is mounted, the driving gear located in the electrophotographic image forming apparatus is engaged with the second gear and the intermediate gear, respectively, the urging member is urged by the door cover or the inner wall of the electrophotographic image forming apparatus, when the driving gear drives the second gear to rotate, the tendency of the waste toner hopper to leave the toner hopper is stopped by the urging member, and the developing member located in the toner hopper can be kept in good contact with the photosensitive member located in the waste toner hopper.

Description

Processing box

Technical Field

The utility model relates to an electrophotographic image forming field especially relates to a detachably installs processing box in electrophotographic image forming apparatus.

Background

A process cartridge is generally detachably mounted to an electrophotographic image forming apparatus such as a laser printer/copier, and when the process cartridge receives a driving force from the electrophotographic image forming apparatus in which a driving gear is provided, and at the same time, a driven gear is provided in the process cartridge, it is a common driving force transmission manner that the respective components in the process cartridge start rotating to operate.

As disclosed in chinese patent application publication No. CN111221235A, a driving force transmission method is disclosed, in which longitudinal ends of the photosensitive member 22 and the developing member 12 provided in the process cartridge C are provided with a second gear 42 and a first gear 41, respectively, and an intermediate gear 43 engaged with the first gear 41, when the process cartridge C is mounted, the second gear 42 and the intermediate gear 43 are simultaneously engaged with the driving force output member 50 in the electrophotographic image forming apparatus, and the first gear 41 is not directly engaged with the second gear 42, and when the driving force output member 50 starts to rotate in a direction indicated by r, the first gear 41 approaches toward the second gear 42, that is, the developing member 12 and the photosensitive member 22 approach each other, thereby ensuring the image forming quality of the electrophotographic image forming apparatus.

In actual testing, the driving force applied to the second gear 42 by the driving force output member 50 will have a component to force the second gear 42 to move upward or backward, which in turn will cause the photosensitive-member waste toner hopper 200 to separate from the toner hopper 100, reflecting the fact that the side of the driving end a is partially whitish on the imaging medium.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a processing box under the prerequisite that does not change current drive power transmission mode, prevents useless powder storehouse and powder storehouse alternate segregation to ensure that the formation of image quality is good, it adopts following mode:

a process cartridge detachably mountable to an electrophotographic image forming apparatus, the process cartridge including a powder hopper and a waste powder hopper hinged to each other, the powder hopper including a powder hopper housing and a developing member rotatably mounted in the powder hopper housing, the waste powder hopper including a waste powder hopper housing and a photosensitive member rotatably mounted in the waste powder hopper housing, the developing member and the photosensitive member being arranged oppositely; the tail end of the developing piece is provided with a first gear, the tail end of the photosensitive piece is provided with a second gear, and the powder bin shell is provided with an intermediate gear meshed with the first gear; the processing box also comprises a forced pushing assembly movably arranged in the waste powder bin; when the process cartridge is mounted, the drive gear provided at the electrophotographic image forming apparatus is engaged with the second gear and the intermediate gear, respectively, and the urging member is urged by the door cover or the inner wall of the electrophotographic image forming apparatus.

The processing box is provided with a driving end and a conductive end which are oppositely arranged in the left-right direction, and the urging assembly is at least arranged on one side closer to the driving end.

The waste powder bin comprises a groove formed by downwards sinking from the upper surface of the waste powder bin shell, and the forced pushing assembly is installed in the groove.

The urging assembly comprises an urging piece and an elastic piece which are combined with each other, and the elastic piece is used for providing force required by resetting for the urging piece.

The urging piece comprises an urging part for receiving urging force, an extension part connected with the urging part and a clamping part connected with the extension part.

As one of the implementation mode, the recess includes the curb plate of the bottom that is located the below, the preceding curb plate that is located the place ahead and is located the limiting plate of the recess left and right sides respectively, the limiting plate extends along the fore-and-aft direction, compels to push away the piece and is installed along the fore-and-aft direction, and the extension moves between limiting plate and bottom curb plate along the fore-and-aft direction.

The groove further comprises a combination hole penetrating through the front side plate, the clamping portion is combined with the combination hole, and a through hole opposite to the limiting plate is further formed in the bottom side plate.

As another embodiment, the groove includes a bottom side plate located below and a through hole located on the bottom side plate, the urging member is installed in the up-down direction, and the engaging portion is engaged with the through hole.

The transmission mode of the driving force in the processing box is not changed, but due to the arrangement of the forced pushing assembly, when the driving gear drives the second gear to rotate, the trend that the waste powder bin leaves the powder bin is prevented by the forced pushing assembly, and the developing piece positioned in the powder bin can be kept in good contact with the photosensitive piece positioned in the waste powder bin.

Drawings

Fig. 1 is a perspective view of a process cartridge according to the present invention.

Fig. 2 is a schematic view of the processing box according to the first embodiment of the present invention after the forced pushing assembly and the waste powder bin housing are disassembled.

Fig. 3 is a perspective view of a waste powder bin in a processing box according to an embodiment of the present invention.

Fig. 4 is a schematic view of the second embodiment of the present invention after the forced pushing assembly and the waste powder bin casing are disassembled.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a perspective view of a process cartridge according to the present invention. The mounting direction of the process cartridge is the front, the direction opposite to the mounting direction is the rear, the upper position is above, the lower portion is below, the left side is left, and the right side is right, as viewed from the rear to the front, with respect to the orientation when the process cartridge is mounted in the mounting direction of the electrophotographic image forming apparatus.

A process cartridge C detachably mountable in an electrophotographic image forming apparatus, the process cartridge C including a powder hopper 100 and a waste powder hopper 200 hinged to each other, the powder hopper 100 and the waste powder hopper 200 each extending in a left-right direction, the two being formed separately, the left side of the process cartridge C being a driving end a and the right side being a conductive end B, the powder hopper 100 including a powder hopper housing 10 and a developing member 12 rotatably mounted in the powder hopper housing 10, the waste powder hopper 200 including a waste powder hopper housing 20 and a photosensitive member 22 rotatably mounted in the waste powder hopper housing 20, the developing member 12 and the photosensitive member 22 being arranged oppositely, and at the driving end a, the end of the developing member 12 being provided with a first gear 41, the end of the photosensitive member 22 being provided with a second gear 42, the powder hopper housing 10 being provided with an intermediate gear 43 engaged with the first gear 41, the driving gear located in the electrophotographic image forming apparatus being engaged with the second gear 42 and the intermediate gear 43, respectively, when the process cartridge C is mounted to the electrophotographic image forming apparatus, the photosensitive members 22 are directly driven to rotate by the driving gear via the second gear 42, and the developing members 12 are driven to rotate via the intermediate gear 43 and the first gear 41.

As shown in the drawing, the process cartridge C further includes first positioning posts 26 and second positioning posts 27 provided at both left and right ends of the waste toner hopper casing 20, the first positioning posts 26 are located in front of the second positioning posts 27 in the mounting direction, the first positioning posts 26 are substantially coaxial with the photosensitive member 22, and when the process cartridge C is mounted, the first positioning posts 26 are pressed downward and forward by the deformable member in the electrophotographic image forming apparatus, and the second positioning posts 27 enter predetermined positioning grooves in the inner wall of the electrophotographic image forming apparatus, whereby the process cartridge C can be stably mounted in the electrophotographic image forming apparatus.

The driving force applied to the second gear 42 by the driving gear during the operation of the process cartridge C has a tendency to force the waste toner hopper 200 upward, and in order to prevent the photosensitive member 22 and the developing member 12 from being separated, as shown in the drawing, the process cartridge C further includes a urging member 60 mounted on the waste toner hopper 200, and when the process cartridge C is mounted to the electrophotographic image forming apparatus, a door cover or an inner wall of the electrophotographic image forming apparatus applies an urging force to the urging member 60 to overcome the tendency of the waste toner hopper 200 to move upward and rearward.

Example one

FIG. 2 is a schematic view of a waste powder bin of a processing box according to an embodiment of the present invention after the urging assembly and the waste powder bin are disassembled; fig. 3 is a perspective view of a waste powder bin in a processing box according to an embodiment of the present invention.

The urging member 60 is movably mounted in a groove 25 of the waste toner hopper housing 20, as shown in the drawing, the groove 25 is formed depressed downward from the upper surface 24 of the waste toner hopper housing 20, having a rear opening 25a facing rearward and an upper opening 25b facing upward, the urging member 60 being movable in the front-rear direction; the side of the waste bin housing 20 opposite the upper surface 24 forms a waste bin, and the recess 25 can also be described as being recessed from the upper surface 24 towards the side of the waste bin housing.

The groove 25 comprises a bottom side plate 251 positioned at the lower part, a front side plate 252 positioned at the front part and limiting plates 253 respectively positioned at the left side and the right side of the groove 25, and the limiting plates 253 extend along the front-back direction, so that the pushing assembly 60 is limited by the limiting plates 253 and the bottom side plate 251 respectively in the up-down direction, and the pushing assembly 60 is ensured to move in the front-back direction; further, the groove 25 further includes a combination hole 255 penetrating through the front side plate 252, that is, the combination hole 255 penetrates from the groove 25 toward the waste powder containing bin, and meanwhile, the bottom side plate 251 is further provided with a through hole 254 opposite to the limiting plate 253, so that the limiting plate 253 can be integrally formed with the waste powder bin housing 20 by injection molding.

The urging assembly 60 includes an urging member 61 and an elastic member 62 which are combined with each other, optionally, the elastic member 62 may be a compression spring, a tension spring, or an object with elasticity such as sponge and rubber, and the present invention is described by taking the compression spring of the elastic member 62 as an example. As shown in fig. 2, the elastic member 62 is located between the urging member 61 and the groove 25 for providing the urging member 61 with a force required for returning, the urging member 61 includes an urging portion 611 receiving the urging force, an extending portion 613 connected to the urging portion 611, and a catching portion 612 connected to the extending portion 613, and when mounted, the catching portion 612 and the extending portion 613 enter between the bottom side plate 251 and the stopper plate 253 from the rear opening 25a of the groove 25, and continue moving forward until the catching portion 612 enters the engaging hole 255, so that the urging member 61 is engaged with the waste toner hopper housing 20.

When the process cartridge C having the urging member 60 is mounted, the door cover or the inner wall of the electrophotographic image forming apparatus applies a forward urging force to the urging portion 611 of the urging member 61, the urging member 61 is urged to move forward against the elasticity of the compression spring 62, and when the driving gear drives the second gear to rotate and the waste toner hopper 200 has a tendency to move backward, the tendency is stopped by the urging member 61, the first positioning column 26 does not pass over the deformable member, and the photosensitive member 22 and the developing member 12 can be kept in good contact.

Example two

The same parts of this embodiment as those of the above embodiment will be given the same numbers, and the difference is the moving direction of the urging assembly.

As shown in fig. 4, the urging assembly 60 in this embodiment still includes the urging member 61 and the elastic member 62 which are combined with each other, the elastic member 62 is preferably a compression spring D between the urging member 61 and the waste toner hopper housing 20, and the urging member 61 can move the urging member 61 in the up-down direction of the process cartridge, and also includes an urging portion 611 which receives the urging force, an extending portion 613 which is connected to the urging portion 611, and a catching portion 612 which is connected to the extending portion 613; accordingly, the bottom plate 251 of the groove 25 is provided with the through hole 254 that engages with the engaging portion 612, and the urging member 61 is mounted from the upper opening 25b in the up-down direction.

When this process cartridge C is mounted to the electrophotographic image forming apparatus, the door cover or the inner wall of the electrophotographic image forming apparatus applies a downward urging force to the urging portion 611 so that the second positioning column 27 is positioned more stably in the positioning groove, and when the driving gear drives the second gear to rotate and the waste toner hopper 200 has a tendency to move upward, this tendency is stopped by the urging member 61, the second positioning column 27 does not disengage from the positioning groove, and the photosensitive member 22 and the developing member 12 can be kept in good contact.

In contrast, when the process cartridge C is operated, the side where the driving end a is located is more affected by the driving gear, and therefore, it is sufficient to provide the urging member 60 on the side of the process cartridge C closer to the driving end a, however, when the urging member 60 is also provided on the side closer to the conductive end B, the mounting state of the process cartridge C in the electrophotographic image forming apparatus becomes more stable, and therefore, the urging member 60 can be mounted either alone on the side closer to the driving end a or simultaneously on the side closer to the driving end a and the side closer to the conductive end B, that is, the process cartridge C includes the urging member 60 mounted at least on the side closer to the driving end a, and when the urging member 60 is simultaneously mounted on the side closer to the driving end a and the side closer to the conductive end B, the two urging members 60 are symmetrically arranged in the left-right direction of the process cartridge C.

The process cartridge C according to the above embodiment does not change the transmission manner of the driving force, i.e., the photosensitive member 22 is still directly driven by the driving gear through the second gear 42, the developing member 12 is driven by the driving gear through the first gear 41 and the intermediate gear 43 in order, and at the same time, the process cartridge C is urged by the door cover or the inner wall of the electrophotographic image forming apparatus through the urging member 60, and the waste toner hopper 200 can be stably positioned in the electrophotographic image forming apparatus while the driving gear drives the second gear to rotate, and thus, the photosensitive member 22 and the developing member 12 can be kept in good contact.

Claims

1. A process cartridge detachably mountable to an electrophotographic image forming apparatus, the process cartridge including a powder hopper and a waste powder hopper hinged to each other, the powder hopper including a powder hopper housing and a developing member rotatably mounted in the powder hopper housing, the waste powder hopper including a waste powder hopper housing and a photosensitive member rotatably mounted in the waste powder hopper housing, the developing member and the photosensitive member being arranged oppositely;

the tail end of the developing piece is provided with a first gear, the tail end of the photosensitive piece is provided with a second gear, and the powder bin shell is provided with an intermediate gear meshed with the first gear;

the processing box is characterized by also comprising a pushing assembly movably arranged in the waste powder bin;

when the process cartridge is mounted, the drive gear provided at the electrophotographic image forming apparatus is engaged with the second gear and the intermediate gear, respectively, and the urging member is urged by the door cover or the inner wall of the electrophotographic image forming apparatus.

2. A cartridge according to claim 1, wherein the cartridge has a driving end and a conductive end which are oppositely provided in a left-right direction, and the urging member is installed at least on a side closer to the driving end.

3. A process cartridge according to claim 2, wherein the waste toner hopper includes a recess formed by being depressed downward from an upper surface of the waste toner hopper housing, the urging member being mounted in the recess.

4. A process cartridge according to claim 3, wherein the urging member includes an urging member and an elastic member which are combined with each other, the elastic member being for providing the urging member with a force required for returning.

5. A process cartridge according to claim 4, wherein the urging member includes an urging portion which receives the urging force, an extending portion which is connected to the urging portion, and a catching portion which is connected to the extending portion.

6. A process cartridge according to claim 5, wherein the recess includes a lower side plate, a front side plate, and restriction plates provided on left and right sides of the recess, respectively, the restriction plates extending in the front-rear direction, the urging member being mounted in the front-rear direction, the extension moving in the front-rear direction between the restriction plates and the lower side plate.

7. A process cartridge according to claim 6, wherein the recess further includes a coupling hole penetrating the front side plate, the engaging portion being coupled to the coupling hole.

8. A process cartridge according to claim 7, wherein the bottom side plate is further provided with a through hole opposed to the stopper plate.

9. A process cartridge according to claim 5, wherein the recess includes a bottom side plate located below and a through hole located on the bottom side plate, the urging member is installed in the up-down direction, and the engaging portion is engaged with the through hole.