CN219658008U - Developing box - Google Patents
Developing box Download PDFInfo
- Publication number
- CN219658008U CN219658008U CN202320311945.XU CN202320311945U CN219658008U CN 219658008 U CN219658008 U CN 219658008U CN 202320311945 U CN202320311945 U CN 202320311945U CN 219658008 U CN219658008 U CN 219658008U
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- CN
- China
- Prior art keywords
- roller shaft
- developing
- axial direction
- powder feeding
- bearing member
- Prior art date
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- 239000000843 powder Substances 0.000 claims abstract description 40
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Dry Development In Electrophotography (AREA)
Abstract
The utility model discloses a developing box; comprising the following steps: a housing configured to accommodate a developer; comprising a drive side and a conductive side opposite to the drive side in an axial direction; a drive gear located on the drive side; a developing roller including a developing roller shaft extending in an axial direction; the powder feeding roller comprises a powder feeding roller shaft extending in the axial direction; a developing electrode electrically connected to the developing roller, including a first projection extending in an axial direction; the first protrusion is positioned on the conductive side; the first protrusion is configured to contact a power supply unit in the image forming apparatus to receive power; and a bearing member located at the conductive side and surrounding at least a portion of the first protrusion, the bearing member supporting only one of the developing roller shaft and the powder feeding roller shaft.
Description
Technical Field
The present utility model relates to a developing cartridge detachably mounted in an image forming apparatus, which is an electrophotographic image forming apparatus.
Background
A developing cartridge is known in the art, in an axial direction of the developing cartridge, provided with a first bearing member and a second bearing member, respectively, the first bearing member supporting first ends of a developing roller shaft and a powder feeding roller shaft, respectively; the second bearing member supports the second ends of the developing roller shaft and the powder feeding roller shaft, respectively; however, the bearing member generally disposed at one side of the conductive end of the developing cartridge is further provided with a developing electrode or the bearing member is disposed around the developing electrode for supporting the developing electrode or protecting the developing electrode from external interference, but the bearing member having the above structure may influence the stability of the bearing member with respect to the housing due to the force from the developing roller and the powder feeding roller during operation due to the simultaneous supporting of the developing roller and the powder feeding roller, thereby further affecting the stability of the developing electrode surrounded by the bearing member and further affecting the stability of the developing electrode in contact with a power supply unit in the image forming apparatus; and in the transportation, when the developing roller shaft and the powder feeding roller shaft are simultaneously subjected to a large impact force, the bearing may be broken and the developing roller shaft or the powder feeding roller shaft cannot be normally supported.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and is realized by the following technical scheme: a developing cartridge; comprising the following steps: a housing configured to accommodate a developer; comprising a drive side and a conductive side opposite to the drive side in an axial direction; a drive gear located on the drive side; a developing roller including a developing roller shaft extending in an axial direction; the powder feeding roller comprises a powder feeding roller shaft extending in the axial direction; a developing electrode electrically connected to the developing roller, including a first projection extending in an axial direction; the first protrusion is positioned on the conductive side;
a bearing member located on the conductive side; the bearing member surrounds the first projection, and the bearing member supports only the developing roller shaft and does not support the toner feeding roller shaft.
Further, the bearing member further includes a second projection extending in the axial direction, the second projection being farther from the developing roller shaft than the first projection in a second direction perpendicular to the axial direction.
Further, a powder feeding roller shaft supporting portion that supports the powder feeding roller shaft is further provided at the conductive side, and the powder feeding roller shaft supporting portion is mounted to the conductive side of the housing.
Further, a powder feeding roller shaft supporting part for supporting the powder feeding roller shaft is further arranged on the conductive side, and the powder feeding roller shaft supporting part and the shell are integrally formed.
Further, the bearing member may also support a detection member.
Further, the first protrusion is made of an insulating material.
After the technical scheme is adopted, the bearing component on the conductive side only supports the developing roller or only supports the roller shaft of the powder feeding roller, compared with the prior art, the bearing construction on the conductive side is smaller in external force effect and is less likely to move relative to the shell, so that the developing electrode surrounded by the bearing component can be influenced by the bearing component to keep stable contact with the power supply unit in the image forming device; and in a second direction perpendicular to the axial direction of the developing roller, the bearing member is further provided with a second projection which is provided around the developing electrode projection to reduce contact of the projection of the developing electrode with the external member, thereby reducing external interference of the developing electrode and increasing stability of the developing electrode.
Drawings
Fig. 1 is a schematic view of a developing cartridge provided in embodiment 1 of the present utility model;
fig. 2 is a schematic view of a drive side of a developing cartridge according to embodiment 1 of the present utility model;
FIG. 3 is a schematic view of the conductive side of the developing cartridge provided in embodiment 1 of the present utility model;
fig. 4 is an exploded view of the conductive side of the developing cartridge provided in embodiment 1 of the present utility model;
fig. 5 is an exploded view of the conductive side of the developing cartridge provided in embodiment 2 of the present utility model;
fig. 6 is a schematic view of the conductive side of the developing cartridge provided in embodiment 3 of the present utility model;
fig. 7 is an exploded schematic view of the conductive side of the developing cartridge provided in embodiment 3 of the present utility model.
Detailed Description
Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
[ example 1 ]
The developing cartridge of the present embodiment includes a casing 10 that can accommodate developer, a developing roller 14 is accommodated in the casing 10 for conveying the developer to the image forming apparatus or the photosensitive drum in the photosensitive drum cartridge, and the developing roller 14 includes a developing roller shaft 20 extending in the axial direction; the developing cartridge is also provided therein with a toner feeding roller for feeding the developer to the developing roller 14, the toner feeding roller including a toner feeding roller shaft 21 extending in the axial direction. The housing 10 comprises a drive side 11 at a first side in the axial direction and a second, electrically conductive side 12 opposite the drive side 11 in the axial direction; the driving side 11 is provided with a driving gear 15 for meshing with a driving force output device in the image forming apparatus to receive a driving force from the image forming apparatus; the powder feeding roller gear 16 is provided on the driving side 11 to be engaged with the driving gear 15 to receive the driving force from the driving gear 15; the developing roller gear 17 is provided at the driving side 11 to receive the driving force from the powder feeding roller gear 16, of course, alternatively, the developing roller gear 17 may be directly engaged with the driving gear 15 to receive the driving force from the driving gear 15, a stirring frame (not shown) is further provided in the developing cartridge, the stirring frame is provided in the casing 10 to receive the driving force from the driving gear 15 to rotate to stir the developer of the casing and feed the developer to the powder feeding roller, the stirring frame (not shown) is further provided at one end of the driving side of the casing with a stirring frame gear 18, and the stirring frame gear 18 may be engaged with the driving gear 15 to receive the driving force from the driving gear 15. The developing box driving side is also provided with a chip 13 for storing developing box information, the chip 13 is configured to be in electrical contact with the printer for information communication, alternatively, the electrical contact surface of the chip can be arranged on the developing box driving side, and a memory unit for storing information can be arranged at other parts of the shell, so that the interference of the electrical contact surface of the chip by a power transmission unit of the printer can be reduced, and the information interference between the electrical contact surface of the chip and the printer can be reduced.
The developer cartridge housing conductive side 12 is provided with a bearing member 24, the bearing member 24 preferably being made of an insulating material. The bearing member 24 is provided with a developing roller shaft receiving hole 24a supporting the developing roller shaft 20, the inner diameter of the developing roller shaft receiving hole 24a being slightly larger than the outer diameter of the developing roller shaft 20, and the bearing member 24 may be fixed to the housing conductive side 12 by a fixing member such as a screw, so that the developing roller shaft receiving hole 24a may support one end of the developing roller shaft 20 on the conductive side while the developing roller shaft 20 may be rotated with respect to the developing roller shaft receiving hole 24 a. The developing cartridge conductive side 12 in the present embodiment is further provided with a developing electrode 22, the developing electrode 22 including a first projection 22a extending in the axial direction, the first projection 22a being contactable with a power supply unit of the image forming apparatus to receive electric power from the power supply unit in the image forming apparatus; meanwhile, the developing electrode 22 is also provided with a developing roller electric contact portion (not shown) that can be brought into contact with the developing roller shaft 20 to transfer electric power received from the image forming apparatus into the developing roller shaft 20. The developing roller electrical contact may be provided at the driving side 11 or at the conductive side 12 as long as it can be electrically connected with the developing roller shaft 20. A second projection 24b is also provided in the bearing member 24 in the present embodiment, the second projection 24b being configured to extend in the axial direction while the second projection 24b is located at the rear end of the first projection 22a of the developing roller electrode in a second direction perpendicular to the axial direction, the second projection 24b being farther from the developing roller shaft 20 than the first projection 22 a. In this embodiment, the first protrusions 22a,22a of the developing electrode may be inserted into the bearing member 24, and the bearing member 24 surrounds the first protrusion 22a for protecting the first protrusion 22a from moving relative to the housing to better position the developing electrode 22. Also, since the second projection 24b is located at the rear end of the first projection 22a, it is possible to further prevent the developing electrode first projection 22a from being disturbed from the image forming apparatus when the developing cartridge is taken out from or mounted to the image forming apparatus, and also the second projection 24b can better prevent foreign substances from disturbing the first projection 22a during transportation of the developing cartridge, so that the developing electrode first projection 22a can be better protected, thereby having good electric conductivity.
In the present embodiment, one detecting member mounting portion 24c is also provided in the bearing member 24, and a detecting member 30 detectable by a detecting unit in the image forming apparatus can be mounted in the detecting member mounting portion 24c for identifying the capacity of the developing cartridge and other relevant information. The detecting member 30 can be detected by a detecting unit in the image forming apparatus to recognize information such as the type of the developing cartridge and the page yield.
The conductive side in the developing cartridge of the present embodiment is further provided with a powder feeding roller shaft supporting portion 23, and the powder feeding roller shaft supporting portion 23 may be mounted to the conductive side of the casing by a fixing member such as a screw and support a tip of the powder feeding roller shaft 21 at the conductive end, so that the powder feeding roller 21 may be supported by the powder feeding roller shaft supporting portion 23 while the powder feeding roller shaft supporting portion 23 may also restrict movement of the powder feeding roller shaft in the axial direction.
In the present embodiment, the bearing member 24 supporting the developing roller shaft 20 is provided separately from the powder feeding roller supporting portion 23 supporting the powder feeding roller, so that the bearing member 24 supports only the developing roller shaft 20 without supporting the powder feeding roller shaft 21, and thus the developing roller 14 and the powder feeding roller in the developing cartridge are rotated by receiving the driving force or the developing cartridge is transported, and the bearing member 24 is subjected to only the force of the developing roller without being subjected to the force of the powder feeding roller, compared with the prior art. The bearing member 24 is less subject to external forces and less prone to movement or impact relative to the housing and thus may be more stably located on the conductive side of the housing; and the bearing member 24 is also provided with a second protrusion, which can further prevent the first protrusion of the developing electrode from being disturbed by the outside, further improving the contact stability of the developing electrode with the power supply unit of the image forming apparatus.
[ example 2 ]
For the same portions as in embodiment 1 described above, this embodiment 2 will not be described in detail, and this embodiment 2 differs from embodiment 1 described above in that: the powder feeding roller shaft supporting part in the embodiment is integrally formed with the shell, and one end of the powder feeding roller shaft positioned at the conductive end is directly supported by the powder feeding roller shaft supporting part on the shell.
Variant examples:
although in embodiment 1 and embodiment 2, the bearing member 24 supports only the developing roller shaft and not the toner conveying roller shaft, the toner conveying roller shaft supporting portion supports only the toner conveying roller shaft; but will be apparent to those skilled in the art; it is easily conceivable that the bearing member may be configured to support only the toner feeding roller shaft, not the developing roller shaft; a developing roller shaft supporting portion may be additionally provided to support only the developing roller shaft
[ example 3 ]
The same portions as those of embodiment 1 in this embodiment will not be described in detail, and this embodiment only describes differences from embodiment 2: the bearing member 34 in the present embodiment is provided with a developing roller shaft supporting hole 34a that supports only the developing roller shaft without supporting the detecting member; meanwhile, the second projection 34b of the present embodiment is also provided at the rear end of the first projection 22a of the developing electrode in the second direction, farther from the developing roller shaft than the first projection 22 a. In addition, the powder feeding roller shaft supporting part 43 and the shell are integrally formed, so that the number of parts of the developing box can be reduced, and the cost is saved.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (7)
1. A developing cartridge; comprising the following steps:
a housing configured to accommodate a developer; comprising a drive side and a conductive side opposite to the drive side in an axial direction;
a drive gear located on the drive side;
a developing roller including a developing roller shaft extending in an axial direction;
the powder feeding roller comprises a powder feeding roller shaft extending in the axial direction;
a developing electrode electrically connected to the developing roller, including a first projection extending in an axial direction; the first protrusion is positioned on the conductive side; the first protrusion is configured to contact a power supply unit in the image forming apparatus to receive power;
a bearing member located on the conductive side and surrounding at least a portion of the first protrusion;
wherein the bearing member supports only one of the developing roller shaft or the powder feeding roller shaft.
2. The developing cartridge according to claim 1, wherein the bearing member further includes a second projection extending in an axial direction, the second projection being farther from the developing roller shaft than the first projection in a second direction perpendicular to the axial direction.
3. The developing cartridge according to claim 1, wherein a toner feed roller shaft supporting portion that supports the toner feed roller shaft is further provided at the conductive side, the toner feed roller shaft supporting portion being mounted to the conductive side of the housing.
4. The developing cartridge according to claim 1, wherein a toner feed roller shaft supporting portion that supports the toner feed roller shaft is further provided at the conductive side, the toner feed roller shaft supporting portion being integrally formed with the housing.
5. A developing cartridge according to claim 1, wherein said bearing member further supports a detecting member, said detecting member being detectable by a detecting unit in the image forming apparatus.
6. The developing cartridge according to claim 2, wherein the second projection is made of an insulating material.
7. The developer cartridge of claim 1, further comprising a chip electrical contact surface disposed on said conductive side of the housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022203935078 | 2022-02-25 | ||
| CN202220393507 | 2022-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219658008U true CN219658008U (en) | 2023-09-08 |
Family
ID=87861098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320311945.XU Active CN219658008U (en) | 2022-02-25 | 2023-02-24 | Developing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219658008U (en) |
-
2023
- 2023-02-24 CN CN202320311945.XU patent/CN219658008U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |