CN213843784U

CN213843784U - Processing box

Info

Publication number: CN213843784U
Application number: CN202022213619.4U
Authority: CN
Inventors: 夏阳
Original assignee: Jiangxi Yibo Electronic Technology Co Ltd
Current assignee: Jiangxi Yibo Electronic Technology Co Ltd
Priority date: 2020-10-08
Filing date: 2020-10-08
Publication date: 2021-07-30
Anticipated expiration: 2030-10-08

Abstract

The utility model discloses a processing box installs in electronic imaging equipment, processing box includes: the method comprises the following steps: a drum unit comprising: a first housing; a photosensitive drum supported by the first housing; a developing unit including: a second housing; a developing roller for carrying a developer, supported to the second casing; a connecting shaft for connecting the first housing and the second housing, the developing unit being rotatable around the connecting shaft; the processing box also comprises a conductive component and an electric adapter, wherein the conductive component is electrically connected with the developing roller and is used for transmitting the electric power output by the imaging equipment to the developing roller; the electric adaptor is arranged on the first shell, electrically connected with the imaging device and the conductive member, and used for accessing electric power output by the imaging device and transmitting the electric power to the conductive member.

Description

Processing box

Technical Field

The present invention relates to a process cartridge, and more particularly to a conductive member used in a process cartridge.

Background

The process cartridge is a cartridge detachably loaded in a main body of the image forming apparatus, and the process cartridge of the existing image forming apparatus is divided into two types, one is a split type, and comprises a developing assembly and a photosensitive assembly; the other is an integral type, that is, the developing assembly and the photosensitive assembly together constitute a process cartridge. The two processing boxes have the same main components and comprise a developing assembly and a photosensitive assembly, the developing assembly mainly comprises a powder bin, a powder supply roller, a developing roller, a powder outlet knife and the like, and the photosensitive assembly mainly comprises a photosensitive drum, a charging roller, a waste powder bin and the like. An electrophotographic image forming apparatus adopting an electrophotographic image forming method operates as follows: an electrophotographic photosensitive drum is selectively exposed to light by an image forming apparatus to form an electrostatic latent image, the latent image is developed with toner into a toner image by a developing roller, and the formed toner image is transferred onto a recording medium by a transfer roller to form an image on the recording material.

In the prior art, an image forming apparatus is generally provided with a plurality of power output portions electrically connected with a plurality of conductive sheets of a processing box, the conductive sheets are respectively electrically connected with a powder supply roller, a developing roller and a powder discharge blade, and the power in the image forming apparatus is respectively switched to the powder supply roller, the developing roller and the powder discharge blade.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a processing box aims at solving prior art scheme and has a plurality of contacts of processing box and appear defect such as bad electrically conductive easily to the problem of the printing quality of box is handled in the influence, the utility model discloses a realize through following technical scheme:

a process cartridge mounted to an electronic image forming apparatus, comprising:

a drum unit comprising: a first housing;

a photosensitive drum supported by the first housing;

a developing unit including: a second housing;

a developing roller for carrying a developer, supported to the second casing;

a connecting shaft for connecting the first housing and the second housing, the developing unit being rotatable around the connecting shaft;

the processing box also comprises a conductive component and an electric adapter, wherein the conductive component is electrically connected with the developing roller and is used for transmitting the electric power output by the imaging equipment to the developing roller; the electric adaptor is arranged on the first shell, electrically connected with the imaging device and the conductive member, and used for accessing electric power output by the imaging device and transmitting the electric power to the conductive member.

Further, the conductive member includes a main body portion and a protruding portion extending from the main body portion in a longitudinal direction, the main body portion is electrically connected to the developing roller and the powder feeding roller, respectively, and the protruding portion is electrically connected to the powder discharging blade.

Further, the main body portion includes a developing roller bearing portion, the developing roller protrudes from the second housing to form a first end portion, and the first end portion is rotatably received in the developing roller bearing portion so that the developing roller is electrically connected to the conductive member.

The powder feeding roller protrudes out of the second shell to form a second end portion, the main body portion comprises a powder feeding roller bearing portion, and the second end portion can be rotatably connected to the powder feeding roller bearing portion so that the powder feeding roller is electrically connected with the conductive member.

Further, the second casing is provided with a fixing hole, the fixing hole is located on the downstream side of the powder discharging blade in the mounting direction of the fixing member, and the protruding portion is located on the downstream side of the fixing hole.

Further, the second case is provided with a fixing groove recessed in a longitudinal direction from the second case surface, and the projection is provided in the fixing groove.

Further, the electrical adaptor comprises a fixing part, a contact part and an elastic part; the fixing portion is fixed to the first housing, the contact portion is electrically connected to the imaging device, and the elastic portion is electrically connected to the conductive member.

Further, first casing is provided with the fixed bolster, the fixed bolster includes location protruding and the bearing post, the fixed part with location protruding cooperation is fixed, the contact site cladding is fixed bearing post surface.

Further, when the developing unit rotates around the connecting shaft relative to the photosensitive unit, the conductive member may move relative to the electrical adaptor.

Further, the conductive member further includes a through hole, and the connecting shaft is disposed in the through hole, so that the conductive member is rotatably mounted on the connecting shaft.

After the technical scheme is adopted, the utility model provides a new processing box, it includes the conductive component and the electricity switching body, through the conductive component with the electricity switching body with imaging device output's electric power switching to the developer roll, send whitewashed roller and go out the powder sword, only need a contact point to carry out power transmission between conductive component and the imaging device, the contact is more stable, has effectively reduced the defect of electrically bad, promotes the printing quality of processing box.

Drawings

FIG. 1 is an exploded perspective view of a process cartridge according to the present invention;

FIG. 2 is a schematic view of a part of the structure of a developing unit of a process cartridge according to the present invention;

FIG. 3 is a schematic view of a part of the structure of a developing unit of a process cartridge according to the present invention;

FIG. 4 is a schematic view of a partially exploded structure of a developing unit of a process cartridge according to the present invention;

FIG. 5 is a schematic structural view of a conductive member of the process cartridge according to the present invention;

FIG. 6 is a cross-sectional view of the non-drive side of the cartridge developer unit of the present invention;

FIG. 7 is a cross-sectional view of another angle of the process cartridge developing unit of the present invention;

FIG. 8 is a schematic structural view of an electrical connector of the process cartridge of the present invention;

FIG. 9 is a schematic perspective view of a developing unit of the cartridge of the present invention at another angle;

FIG. 10 is an enlarged schematic view of A in FIG. 9;

FIG. 11 is an enlarged exploded view of A of FIG. 9;

FIG. 12 is another exploded perspective view of the cartridge of the present invention;

FIG. 13 is a schematic view of a partially exploded structure of the cartridge of the present invention;

fig. 14 is an exploded perspective view of another embodiment of the process cartridge of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, the extending direction of the rotation axis of the photosensitive drum is referred to as the longitudinal direction of the process cartridge, and one end of the process cartridge in the longitudinal direction, which receives the driving force, is a driving end and the other end is a non-driving end.

As shown in fig. 1 to 13, the present invention provides a process cartridge detachably mountable in an image forming apparatus, which includes a drum unit and a developing unit.

Drum unit

The drum unit includes a photosensitive drum 11, a charging roller 12, a cleaning blade 13, and a first casing 14. The first housing 14 has a first side 141 and a second side 142 opposite to each other in the longitudinal direction, the first side 141 is provided at the non-driving end of the process cartridge, and the second side 142 is provided at the driving end of the process cartridge; the photosensitive drum 11 extends along a longitudinal direction and is rotatably supported between the first side 141 and the second side 142, and the second side 142 of the first housing 14 on which the photosensitive drum 11 is located is provided with a coupling member, which is exposed out of the second side 142 through the second side 142 and is used for receiving a driving force of the image forming apparatus and driving the photosensitive drum 11 to rotate. The charging roller 12 is rotatably supported between the first side 141 and the second side 142 so that the charging roller 12 can rotate with the rotation of the photosensitive drum 11 while being in contact with the photosensitive drum 11. The first casing 14 is formed with a waste toner hopper for accommodating the developer remaining after the transfer between the first side 141 and the second side 142, the cleaning blade 13 is fixed between the first side 141 and the second side 142 of the waste toner hopper by screws, and the cleaning blade 13 contacts the peripheral surface of the photosensitive drum 11 with a certain pressure to remove and accommodate the developer remaining after the transfer on the peripheral surface of the photosensitive drum 11 in the waste toner hopper.

Developing unit

The developing unit includes a developing roller 21, a powder feeding roller 22, a powder discharging blade 23, and a second casing 24. The second casing 24 is formed with a powder hopper for containing developer; the developing roller 21 extends in the longitudinal direction, for carrying developer, is rotatably provided in the second casing 24 and is contactable with the photosensitive drum 11; the powder feeding roller 22 is provided in the powder hopper extending in the longitudinal direction and is contactable with the developing roller 21 to charge the developer; the doctor blade 23 is fixed to the second casing 24 extending in the longitudinal direction and is contactable with the developing roller 21 to control the layer thickness of the developer on the developing roller 21.

The developing unit further includes a bracket 3 and a gear assembly 4 including an input gear 41, a developing roller gear 42, a powder feed roller gear 43, a transmission gear 44, and a gear cover 45. The bracket is arranged on one side of the second shell 24, which is positioned at the driving end, the input gear 41 is arranged on the bracket and used for receiving the driving force of the imaging device, the developing roller gear 42 and the powder feeding roller gear 43 are arranged on the bracket, the developing roller gear 42 and the powder feeding roller gear 43 are both meshed with the input gear 41 and rotate along with the input gear 41, the developing roller gear 42 drives the developing roller 21 to rotate, the powder feeding roller gear 43 drives the powder feeding roller 22 to rotate, and the transmission gear 44 is meshed with the input gear 41 and used for receiving the driving force transmitted by the input gear 41 and rotates along with the input gear 41.

As shown in fig. 5 to 11, the developing unit is further provided with a conductive member 5 and an electrical adaptor 6, the conductive member 5 is made of conductive metal or conductive resin, and in the present embodiment, the conductive member 5 is made of conductive resin material and is electrically connected to the developing roller 21, the powder feeding roller 22 and the powder discharging blade 23 respectively to output required electric power to the developing roller 21, the powder feeding roller 22 and the powder discharging blade 23. The conductive member 5 includes a main body portion 51 provided with a developing roller bearing portion 52, a powder feeding roller bearing portion 53, and a projecting portion 54 extending in the longitudinal direction from the main body portion 51; the developing roller 21 is provided with a first end portion 211 protruding from the surface of the second housing 24 at the non-driving end, the first end portion 211 is rotatably received in the developing roller bearing portion 52 to electrically connect the developing roller 21 and the conductive member 5, and similarly, the powder feeding roller 22 is provided with a second end portion 221 protruding from the surface of the second housing 24 at the non-driving end, the second end portion 221 is rotatably received in the powder feeding roller 22 bearing portion to electrically connect the powder feeding roller 22 and the conductive member 5.

The second housing 24 is provided with a fixing hole 241, the fixing hole 241 is used for fixing the powder discharging blade 23, wherein the fixing hole 241 comprises a first fixing hole for fixing the driving side of the powder discharging blade 23 and a second fixing hole for fixing the non-driving side of the powder discharging blade 23, and the first fixing hole and the second fixing hole are respectively fastened on the second housing 24 through the fixing member 7. The protruding portion 54 extends from the main body portion 51 in the longitudinal direction toward the powder discharging blade 23, and specifically, the second housing 24 is provided with a fixing groove 242, the fixing groove 242 being recessed in the longitudinal direction from the surface of the second housing 24 at the non-driving end, the protruding portion 54 of the conductive member 5 being disposed in the fixing groove 242. The fixing member 7 is made of conductive metal or conductive resin, and in the present embodiment, the fixing member 7 is made of conductive screw, and the protruding portion 54 is located on the downstream side of the powder discharge blade 23 in the mounting direction of the screw and is provided with a connection hole 541, when the screw is mounted, the screw firstly passes through the powder discharge blade 23, then passes through the fixing hole 241 to be electrically connected with the powder discharge blade 23 and enters the connection hole 541, so that the conductive member 5 is electrically connected with the powder discharge blade 23 through the screw and outputs the required power to the powder discharge blade 23. On the other hand, the conductive member 5 can be further fixed to the second case 24 by a screw, the second case 24 is further provided with an attachment hole, specifically, the fixing groove 242 is provided with a first side wall and a second side wall opposite to each other in the mounting direction of the screw, the fixing hole 241 is provided on the first side wall, and an attachment hole 243 is formed by recessing from the second side wall in the mounting direction of the screw, the attachment hole 243 is located on the downstream side of the protruding portion 54 in the mounting direction of the screw, and in the screw mounting completed state, the tip end of the screw passes through the connection hole 541 of the protruding portion 54 into the attachment hole 243.

The electrical adaptor 6 is configured as a metal of a conductor or a resin having conductivity, and in the present embodiment, the electrical adaptor 6 is configured as a conductive copper sheet for conducting electric power output from the image forming apparatus and transmitting the electric power to the conductive member 5. The electrical adaptor 6 includes a fixing portion 61, a contact portion 62 bent and extended from one end of the fixing portion 61, and an elastic portion 63 bent and extended from the other end of the fixing portion 61. The first housing 14 is provided with a fixing bracket 143, the electrical adaptor 6 is mounted on the fixing bracket 143, the fixing bracket 143 includes a positioning protrusion 1431 and a receiving column 1432, the fixing portion 61 is fixed in cooperation with the positioning protrusion 1431, the contact portion 62 of the electrical adaptor 6 is formed in a U shape bent and extended from the fixing portion 61, so that the contact portion 62 is covered and fixed on the surface of the receiving column 1432, the contact portion 62 is at least partially exposed on the surface of the first housing 14, and the exposed portion is used for being connected with an electrical contact of the imaging device and receiving the power output by the imaging device. The elastic portion 63 is electrically connected to the conductive member 5 by elastically abutting against the surface of the conductive member 5, so as to transfer the electric power output from the image forming apparatus to the conductive member 5.

As shown in fig. 12 and 13, it should be noted that the present invention provides a process cartridge integrated cartridge, specifically, the process cartridge further includes a connecting shaft 8, the connecting shaft 8 is used for connecting the first casing 14 and the second casing 24, so that the developing unit can rotate around the connecting shaft 8, and the separation of the process cartridge drum and the roller is realized. In the present embodiment, the drum roller separation is achieved by rotating the developing unit away from the drum unit with the connecting shaft 8 as a rotation axis by an external force, the conductive member 5 is disposed on the developing unit and rotates together with the developing unit, and the electrical adaptor 6 is disposed on the first housing 14, that is, the drum unit, when the developing unit rotates around the connecting shaft 8 relative to the drum unit, the elastic portion 63 of the electrical adaptor 6 is elastically abutted against the conductive member 5, and the conductive member 5 is rotatable relative to the electrical adaptor 6, in order to make the contact between the conductive member 5 and the electrical adaptor 6 more stable, it is necessary to make the relative stability and displacement between the conductive member 5 and the electrical adaptor 6 smaller, and thus, a through hole 55 is provided in the conductive member 5, the connecting shaft 8 is disposed in the through hole 55, that is, the connecting shaft 8 is disposed through the through hole 55, so that the conductive member 5 is rotatably mounted on the connecting shaft 8, when the drum roller is separated, the conductive member 5 rotates by taking the connecting shaft 8 as a rotating shaft through the through hole 55, so that the conductive member 5 is ensured to be stably contacted with the electric adaptor 6; the distance between the elastic part 63 and the connecting shaft 8 is smaller than the distance between the contact part 62 and the connecting shaft 8, the electrical contact point between the conductive member 5 and the electrical adaptor 6 is relatively close to the connecting shaft 8, and when the developing unit rotates by taking the connecting shaft 8 as an axis, the relative displacement between the conductive member 5 and the electrical adaptor 6 is relatively small, so that the electrical contact between the conductive member 5 and the electrical adaptor 6 is relatively stable. It will be appreciated that the coupling shaft 8 comprises a first coupling shaft disposed at the non-drive end and a second coupling shaft at the drive end, the first and second coupling shafts being coaxially disposed, and the first and

second housings

14, 24 each being rotatably secured therebetween.

In other embodiments, the conductive member 5 includes an elastic abutting portion (not shown) extending from the main body 51, and can be in elastic electrical contact with the electrical adaptor 6, and when the developing unit rotates away from the drum unit with the connecting shaft 8 as a rotating shaft, the elastic abutting portion can rotate along with the developing unit, and can also ensure stable electrical contact between the conductive member 5 and the electrical adaptor 6.

It can be understood that, in the present embodiment, the first casing 14 is a plastic component formed by injection molding to reduce the cost, in other alternative embodiments, in order to facilitate assembly of the components such as the photosensitive drum 11, the first casing 14 may also be assembled by split components, specifically, as shown in fig. 14, the first casing 14 may include a casing body, and a first side cover and a second side cover disposed at two sides of the casing body, the casing body has a first side surface 141 and a second side surface 142 disposed oppositely in a longitudinal direction, the first side cover is disposed at the first side surface 141, the second side cover is disposed at the second side surface 142, the conductive member 5 is disposed at the first side surface 141, and the electrical adaptor 6 is disposed at the first side cover.

Therefore, the utility model provides a new processing box, through conductive component simultaneously with the developer roll, send whitewashed roller and play powder sword electric connection, conductive component still with imaging device electric connection, through conductive component and the electric power of switching body with imaging device output respectively switching to the developer roll, send whitewashed roller and play powder sword, only need a contact point to carry out power transmission between conductive component and the imaging device, the contact is more stable, effectively reduced the defect of electrically conductive bad, promote the printing quality of processing box.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A process cartridge mounted to an electronic image forming apparatus, comprising:

a drum unit comprising: a first housing;

a photosensitive drum supported by the first housing;

a developing unit including: a second housing;

a developing roller for carrying a developer, supported to the second casing;

the processing box is characterized by further comprising a conductive member and an electric adapter, wherein the conductive member is electrically connected with the developing roller and is used for transmitting the electric power output by the imaging equipment to the developing roller; the electric adaptor is arranged on the first shell, electrically connected with the imaging device and the conductive member, and used for accessing electric power output by the imaging device and transmitting the electric power to the conductive member.

2. A process cartridge according to claim 1, wherein said electrical adaptor includes a fixing portion, a contact portion and an elastic portion; the fixing portion is fixed to the first housing, the contact portion is electrically connected to the imaging device, and the elastic portion is electrically connected to the conductive member.

3. A process cartridge according to claim 2, wherein said first casing is provided with a fixing bracket including a positioning projection and a receiving post, said fixing portion is fitted and fixed to said positioning projection, and said contact portion is fitted and fixed to a surface of said receiving post.

4. A process cartridge according to claim 1, wherein said conductive member is movable relative to said electrical adaptor when said developing unit rotates relative to said drum unit about said connecting shaft.

5. A process cartridge according to claim 1, wherein said conductive member further includes a through hole, and said connecting shaft is provided to said through hole so that said conductive member is rotatably mounted on said connecting shaft.

6. A process cartridge according to claim 1, further comprising a powder feeding roller and a powder discharging blade, wherein said conductive member comprises a main body portion electrically connected to said developing roller and said powder feeding roller, respectively, and a projecting portion extending in a longitudinal direction from said main body portion, and said projecting portion is electrically connected to said powder discharging blade.

7. A process cartridge according to claim 6, wherein said main body portion includes a developing roller bearing portion, said developing roller projects from said second casing to form a first end portion, said first end portion is rotatably received in said developing roller bearing portion to electrically connect said developing roller with said conductive member.

8. A process cartridge according to claim 6, wherein said powder feed roller protrudes from said second casing to form a second end portion, and said main body portion includes a powder feed roller bearing portion, and said second end portion is rotatably received in said powder feed roller bearing portion to electrically connect said powder feed roller with said conductive member.

9. A process cartridge according to claim 6, further comprising a fixing member and a powder discharging blade, wherein said second casing is provided with a fixing hole, said fixing hole is located on a downstream side of said powder discharging blade in an attaching direction of said fixing member, and said projecting portion is located on a downstream side of said fixing hole.

10. A process cartridge according to claim 6, wherein said second casing is provided with a fixing groove recessed in a longitudinal direction from a surface of said second casing, and said projection is provided in said fixing groove.