CN212905904U - Developing box - Google Patents
Developing box Download PDFInfo
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- CN212905904U CN212905904U CN202021741359.1U CN202021741359U CN212905904U CN 212905904 U CN212905904 U CN 212905904U CN 202021741359 U CN202021741359 U CN 202021741359U CN 212905904 U CN212905904 U CN 212905904U
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- developing roller
- developing
- bearing
- roller shaft
- developing cartridge
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Abstract
The utility model discloses a developing box, detachable install to image forming device in, include: a housing having a developer accommodating portion that can accommodate a developer; a coupling member provided on a driving side of the housing and rotatable by receiving a rotational driving force of a driving part in the image forming apparatus; a developing roller having a developing roller shaft extending in a longitudinal direction of the casing, the developing roller shaft being rotatable about an axis extending in the longitudinal direction; a developing roller gear provided on a driving side of the casing; a conductive member electrically connected to the developing roller shaft, provided on a conductive side of the casing, the conductive side being spaced from the driving side in a longitudinal direction of the casing and located on opposite sides; a detected unit provided on the conductive side, detectable by a detecting unit in the image forming apparatus; the developing roller is characterized by further comprising a driving side cover, wherein a supporting part capable of supporting the developing roller shaft is arranged on the driving side cover.
Description
Technical Field
The utility model relates to a detachable installs the developing cartridge to in the image forming apparatus.
Background
The prior art discloses an image forming apparatus such as a laser printer, a developing cartridge is mounted to a main body of the apparatus so as to be detachable therefrom. The developing cartridge contains a developer. After the developer in the developing cartridge is used up, the cartridge is removed from the main body of the apparatus. Then, a new developing cartridge is mounted into the main body. Further, when a jam occurs in the main body of the apparatus, the developing cartridge may be removed from the main body to remove the jam, and then mounted to the main body.
The image forming apparatus is provided with a detection mechanism that can detect whether the developing cartridge is brand new or used.
A detection unit is provided at a side of such a developing cartridge, which can be detected by a detection mechanism in the image forming apparatus to verify that the developing cartridge is new.
The developing cartridge is provided to be detachably mounted to the image forming apparatus and replaceable, facilitating maintenance and use by a user, but with the advancement of image forming technology and the saving of a use space by a user, it is required to provide an image forming apparatus and a developing cartridge which are more miniaturized, and further, for the convenience of transportation and the reduction of transportation cost, it is also desired that the developing cartridge can be more miniaturized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a miniaturized development box can reduce the occupation space of development box, reduces the cost of transportation of development box.
In order to achieve the technical effects, the utility model discloses a realize through following technical scheme:
a developing cartridge detachably mountable to an image forming apparatus, comprising:
a housing having a developer accommodating portion that can accommodate a developer;
a coupling member provided on a driving side of the housing and rotatable by receiving a rotational driving force of a driving part in the image forming apparatus;
a developing roller having a developing roller shaft extending in a longitudinal direction of the casing, the developing roller shaft being rotatable about an axis extending in the longitudinal direction;
a developing roller gear provided on a driving side of the casing;
a conductive member electrically connected to the developing roller shaft, provided on a conductive side of the casing, the conductive side being spaced from the driving side in a longitudinal direction of the casing and located on opposite sides;
a detected unit provided on the conductive side, detectable by a detecting unit in the image forming apparatus; the developing roller is characterized by further comprising a driving side cover, wherein a supporting part capable of supporting the developing roller shaft is arranged on the driving side cover.
Further, the developing device further comprises a second bearing supporting the developing roller shaft, and the second bearing is mounted on the support portion.
Furthermore, the second bearing and the side cover are made of resin materials with different materials.
Further, the developing roller gear is disposed between the developer accommodating portion and the second bearing in the longitudinal direction.
Furthermore, the developing roller also comprises a powder feeding roller for conveying the developer to the developing roller, the powder feeding roller is provided with a powder feeding roller shaft, and the driving side cover is provided with a powder feeding roller shaft supporting part capable of supporting the powder feeding roller shaft.
Further, the powder feeding device further comprises a fourth bearing for supporting the powder feeding roller shaft, and the fourth bearing is mounted on the powder feeding roller shaft supporting part.
After having adopted above-mentioned technical scheme, through utilizing drive side limit lid to support developing roller axle and powder feeding roller axle, can simplify the structure of developing box developer holding portion outer wall department and overlap, through the structure such as developing roller bearing portion and input gear of dispersedly arranging in developing box longitudinal direction to can make developing box more miniaturized, the realization of different materials reduces product manufacturing cost.
Drawings
Fig. 1 is a schematic view of a first-view perspective structure of a developing cartridge provided by the present invention;
fig. 2 is a schematic view of a second perspective three-dimensional structure of the developing cartridge provided by the present invention;
fig. 3 is a schematic structural view of a developing cartridge provided in embodiment 1 of the present invention, with a drive side cover removed;
fig. 4 is an exploded view of a developing cartridge provided in embodiment 1 of the present invention, with a drive side cover removed;
fig. 5 is a schematic structural view of a developing cartridge provided in embodiment 1 of the present invention, with a conductive side cover removed;
fig. 6 is a schematic structural view of a developing cartridge provided in embodiment 1 of the present invention, from which another viewing angle of the conductive side cover is removed;
fig. 7 is a schematic view of a partially exploded structure of a first viewing angle at a driving side of a developing cartridge provided in embodiment 1 of the present invention;
fig. 8 is a schematic view of a partially exploded structure of a second viewing angle at a driving side of a developing cartridge according to embodiment 1 of the present invention;
fig. 9 is a schematic view of a partial structure of a developing cartridge provided in embodiment 1 of the present invention after a gear is removed from a driving side of the developing cartridge;
fig. 10 is an exploded view schematically showing a bearing member on a driving side of a developing cartridge and a casing according to embodiment 1 of the present invention;
fig. 11 is a schematic structural view of a developing cartridge provided in embodiment 2 of the present invention, with a drive side cover removed;
fig. 12 is a schematic perspective view of a developing cartridge provided in embodiment 2 of the present invention;
fig. 13 is a schematic structural view of a developing cartridge provided in embodiment 3 of the present invention, with a conductive side cover removed;
fig. 14 is an exploded view of a developing cartridge provided in embodiment 3 of the present invention, with a conductive side cover removed;
fig. 15 is an exploded view of a conductive side of a developing cartridge according to embodiment 4 of the present invention at a first viewing angle;
fig. 16 is an exploded view of a second view angle of the conductive side of the developing cartridge provided in embodiment 4 of the present invention;
fig. 17 is an exploded view schematically illustrating a first viewing angle at a driving side of a developing cartridge according to embodiment 5 of the present invention;
fig. 18 is an exploded view schematically illustrating a second viewing angle of the driving side of the developing cartridge according to embodiment 5 of the present invention;
fig. 19 is a partial perspective view of a developing cartridge provided in embodiment 6 of the present invention;
fig. 20 is a schematic structural view of a developing cartridge according to embodiment 6 of the present invention, in which a drive side cover is removed;
fig. 21 is a schematic structural view of a developing cartridge provided in embodiment 6 of the present invention, from which a conductive side cover is removed.
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.
Example 1
First, as shown in fig. 1 to 10, the present invention is a detachable developing cartridge installed in an image forming apparatus, including a housing 1 capable of being filled with a developer, a housing space for accommodating the developer is provided in the housing 1, a developing roller 3 and a powder feeding roller 4 supported by the housing 1 are provided, the developing roller 3 and the powder feeding roller 4 are rotatably provided in the housing 1 and extend along a longitudinal direction of the housing 1, a rotational axial direction of the developing roller 3 is a longitudinal direction of the developing cartridge, a direction perpendicular to an axial direction of the developing roller is a transverse direction of the developing cartridge, the developing roller is provided at a front side of the housing 1 in the transverse direction, and a handle 2 for a user to grip is provided at a rear side of the housing 1 in the transverse direction. A coupling member 5 is provided at one side end of the housing 1 in the longitudinal direction, the coupling member 5 is configured to engage with a driving part (not shown) in the image forming apparatus to receive a driving force, the side where the coupling member 5 is located is referred to as a driving side of the developing cartridge, the developing cartridge is provided at the opposite side of the coupling member 5 in the longitudinal direction with a conductive member 45 for electrically connecting to the developing roller 3, the conductive member 45 is configured to contact with an electric output part (not shown) in the image forming apparatus to electrically charge the developing roller 3, the side where the conductive member 45 is located is referred to as a conductive side of the developing cartridge, the driving side has a driving side cover 51 for preventing the coupling member and the like from being detached, and the conductive side has a conductive side cover 52 for protecting the conductive member 45 and the like.
The driving side of the developing cartridge in this embodiment includes a coupling member 5, a developing roller gear 6, a powder feed roller gear 7, and an agitation frame gear 8. The coupling member 5 is provided with a coupling portion 5a, a first tooth portion 5b, and a second tooth portion 5c, wherein the coupling portion 5a, the first tooth portion 5b, and the second tooth portion 5c are arranged in order along the longitudinal direction of the housing, the first tooth portion 5b is engaged with the powder feed roller gear 7 to transmit the driving force to the powder feed roller gear 7, and the second tooth portion 5c is engaged with the developing roller gear 6 and the agitation frame gear 8 to transmit the driving force to the developing roller gear 6 and the agitation frame gear 8. The developing roller gear 6 is mounted at the axial end of the developing roller shaft 3a of the developing roller 3, the powder feeding roller gear 7 is mounted at the axial end of the powder feeding roller shaft 4a, and the agitator gear 8 is provided at the axial end of the agitator shaft 30. The agitating frame is used to agitate the developer contained in the casing 1 onto the powder feeding roller 4, the powder feeding roller 4 is used to convey the developer onto the developing roller 3, and the developing roller 3 is used to develop the upper electrostatic latent image formed on the photosensitive drum. Above structure for the gear compact structure of development box has avoided among the prior art between agitator gear and the coupling gear through a plurality of idler transmission structure, has reduced the moment of torsion of the gear train of development box drive side, has increased the transmission efficiency of drive side gear train, has also reduced manufacturing cost simultaneously.
On the conductive side of the developing cartridge, a second agitating gear 9 and a detected unit 20 are provided. The second agitator gear 9 is also mounted on an axial end of the agitator shaft 30, which is disposed opposite to the agitator gear 8 in the longitudinal direction of the developing cartridge. The agitator shaft 30 rotates by receiving the driving force of the agitator gear 8 and transmits the rotational force to the second agitator gear 9, the second agitator gear 9 engages with the toothed portion 20a provided on the detected unit 20 to transmit the rotational force to the detected unit 20, and the detected unit 20 recognizes information such as whether the developing cartridge is a new developing cartridge and the page yield of the developing cartridge by the detection unit in the image forming apparatus through the rotational conveyance. Since the detected unit 20 does not need to drive the developing roller, the powder feeding roller, and other components inside the developing cartridge to rotate, the torque required for the rotation of the detected unit 20 is small, and therefore, the force transmission mechanism for transmitting the driving force to the detected unit 20 by the stirring rack may adopt other force transmission mechanisms, for example, a belt transmission, a worm gear, or a first friction member sleeved on a second stirring rack gear, and a second friction member sleeved on the outer periphery of the detected unit 20, and the function of transmitting the driving force can be realized by the friction force by the contact between the first friction member and the second friction member.
In addition, since the partial image forming apparatus has a restriction on the rotation direction of the detected member 20b on the detected unit 20, in order to change the rotation direction of the detected unit 20 to apply the image forming apparatus, an idle gear 10 may be optionally added between the second agitator gear 9 and the toothed portion 20a of the detected unit 20. Further, in the partial image forming apparatus, there is a limit to the rotation speed of the detected member 20b, and alternatively, the idle gear 10 is provided as an upper and lower two-stage gear, the number of teeth of the first-stage gear 10a and the second-stage gear 10b is different, and the rotation speed of the detected member 20 is adjusted by the different ratio of the number of teeth.
In order to reduce the manufacturing cost of the developing cartridge, the main body of the housing 1 of the developing cartridge is usually made of materials such as ABS or PS, but the materials of ABS and PS are not wear-resistant and have low surface lubricity, so that the bearing parts for supporting the developing shaft 3a, the powder feeding roller shaft 4a and the coupling member 5 are not suitable for being made of materials such as ABS and PS. Specifically, as shown in fig. 7 to 10, the housing 1 has an outer side surface 1b facing the longitudinal outside of the housing 1 in the longitudinal direction, an inner side surface 1a facing the longitudinal inside of the housing 1 in the longitudinal direction, a first bearing 11 is mounted on the outer side surface 1b, a second bearing 12 is mounted on the inner side surface 1a, the first bearing 11 is provided separately from the second bearing 12, a first bearing portion 11a, a second bearing portion 11b are provided on the first bearing 11, the first bearing portion 11b is configured as a shaft extending in the longitudinal direction, a coupling member 5 is mounted on the first bearing portion 11a, a powder feeding roller shaft 4a is inserted into the second bearing 11b, and when the first bearing 11 is mounted, the second bearing portion 11b is first fitted into the powder feeding roller shaft 4a, and then the first bearing 11 is positioned on the outer side surface 1 b. The second bearing 12 is provided with a third bearing portion 12a and a bearing positioned portion 12b, the housing 1 is provided with a bearing positioned portion 1d, the bearing positioned portion 12b is inserted into the bearing positioned portion 1d to position the second bearing portion 12, when the second bearing 12 is installed, the developing roller shaft 3a penetrates through the third bearing portion 12a, then the second bearing 12 penetrates through a through hole formed in the housing 1 to be installed on the inner side surface 1a of the housing 1, and the second bearing 12 is used for supporting the developing roller shaft 3 a. After the first bearing 11 and the second bearing 12 are mounted, the coupling member 5, the developing roller gear 6, and the powder feeding roller gear 7 can be mounted in place in sequence.
Optionally, the first bearing 11 may also be split into a third bearing and a fourth bearing, the third bearing and the fourth bearing are separately disposed, the third bearing is used for supporting the coupling member, and the fourth bearing is used for supporting the powder feeding roller gear.
Example 2
Next, embodiment 2 of the present invention will be described, and as shown in fig. 11 and 12, this embodiment is different from embodiment 1 in that the structure for transmitting the driving force to the detected unit 20 is different. In this embodiment, a second powder feeding roller gear 13 is disposed on the housing 1 at the opposite side of the powder feeding roller gear 7 in the longitudinal direction, the driving force received by the coupling member 5 is transmitted to the second powder feeding roller gear 13 through the powder feeding roller gear 7 via the powder feeding roller 4, and then the driving force is transmitted to the detected unit 20 via the second powder feeding roller gear 13 for driving the detected unit 20 to rotate, and the power transmission structure between the second powder feeding roller gear 13 and the detected unit 20 may be provided with reference to all the transmission structures described in embodiment 1, and will not be described again. It should be noted that, in the present embodiment, the stirring gear for driving the stirring frame to rotate may be disposed on the driving side or the conductive side, and when disposed on the driving side, the stirring frame gear is engaged with the coupling member to receive the driving force, and when disposed on the conductive side, the stirring frame gear is engaged with the second powder feeding roller gear 13 to receive the driving force, and the engagement may be a direct engagement manner or a manner of being transmitted through 1 to 2 idler gears disposed therebetween.
Example 3
Referring to embodiment 3 of the present invention, as shown in fig. 13 to 14, in this embodiment, as viewed in the longitudinal direction of the developing cartridge, the unit to be detected 20 and at least a part of the electric contact portion 42 for electrical connection with the image forming apparatus are disposed to overlap, the protrusion 20b on the unit to be detected 20 controls the contact and the release of the contact between the electric contact portion 42 and the electric output portion in image formation by a rotational motion, the image forming apparatus can recognize information on whether or not development is a new developing cartridge by a combination of the contact and the release of the contact between the electric output portion in the image forming apparatus and the electric contact portion 42 of the developing cartridge, and after completion of the detection, the electric connection between the electric output portion in the image forming apparatus and the electric contact portion 42 of the developing cartridge is maintained, and this structure, the unit to be detected 20 and the developing cartridge can be integrated in one position in the transverse direction of the developing cartridge, the space of the developing cartridge is further reduced. The electrical contact portion 42 electrically connects the developing roller shaft electrical contact portion 40 electrically contacting the developing roller shaft 3a through the one connecting portion 41, and through the above arrangement, the electrical connection of the developing roller 3 to the image forming apparatus is achieved through the developing roller electrical contact portion 40, the connecting portion 41, and the electrical contact portion 42. The same side of the housing 1 as the detected unit 20 is provided with a mounting protrusion 1c, the top end of the mounting protrusion 1c is provided with a non-circular electric contact mounting part 1c1, the electric contact 42 is mounted on the electric contact mounting part 1c1, specifically, during mounting, the detected unit 20 is sleeved on the mounting protrusion 1c, then the electric contact 42 is pre-mounted on the electric contact mounting part 1c1, and finally, the electric contact 42 is locked on the mounting protrusion 1c by a screw 43 passing through a clearance hole 41a on the connecting part 41. Preferably, the connection portion 41 is made of a conductive metal material such as steel, the electric contact portion 42 and the connection portion 41 are fastened by a screw 43 to realize stable electric connection, and the connection portion 41 is snapped into a groove on the developing roller electric contact portion 40 to realize stable electric connection with the developing roller electric contact portion 40. In order to stabilize the positioning and to secure the fixed electrical connection position between the electrical contact 42 and the image forming apparatus, the outer shape of the electrical contact 40 is set to be non-circular, and the electrical contact mounting portion 1c1 is also set to be non-circular, and preferably, the outer surface 42a of the electrical contact 40 and the outer surface of the electrical contact mounting portion 1c1 are both set to be square, and the inner surface 42b of the electrical contact 40 is also set to be square. Of course, other non-circular configurations may alternatively be implemented. The electrical contact 40 can also be designed without the enclosed inner surface 42b, but directly as a square sheet-like structure, in which case the mounting projection 1c can be provided with a corresponding recess, into which the square sheet-like structure can be snapped.
Example 4
Next, referring to embodiment 4 of the present invention, as shown in fig. 15 to 16, the electrical contact 4201 of this embodiment is different from that of embodiment 3, and the electrical contact 4201 of this embodiment is made of a metal sheet or a conductive plastic having a bending portion, where the bending portion includes a first extending portion 4201a and a second extending portion 4201b, the extending direction of the first extending portion 4201a is different from that of the second extending portion 4201b, and it is preferable that the first extending portion 4201a is bent approximately 90 degrees from the second extending portion 4201b, the first extending portion 4201a extends at least in the longitudinal direction of the developing cartridge, and the second extending portion 4201b extends at least in the transverse direction of the developing cartridge. During installation, the unit to be detected 20 is inserted into the mounting protrusion 1c, the first extension 4201a of the electrical contact 42 is attached to the electrical contact mounting portion 1c1, and the screw 43 is inserted through the through hole of the electrical contact 42 to fix the electrical contact 42 to the mounting protrusion 1 c. In order to enhance the mechanical strength of the electrical contact 42, it is preferable that the electrical contact 42 is made of a conductive metal sheet, and a portion of the electrical contact 4201 on the second extension 4201b is electrically connected to the developing roller electrical contact 40, the first extension 4201a is in contact with an electrical output contact in the image forming apparatus, and the electrical connection of the developing roller shaft to the image forming apparatus is achieved through the electrical contact 4201 and the developing roller electrical contact 40.
Example 5
Next, embodiment 5 of the present invention is described, as shown in fig. 17 to 18, in this embodiment, the bearing member for supporting the developing roller gear 6 and the powder feeding roller gear 7 is mounted on the driving side cover 51, the driving side cover 51 is provided with the second bearing mounting portion 51a and the fourth bearing mounting portion 51b, the outer circumferential surface 1201b of the second bearing 1201 is fitted with the inner circumferential surface of the second bearing mounting portion 51a to position the second bearing 1201, the outer circumferential surface 15b of the fourth bearing 15 is fitted with the inner circumferential surface of the fourth bearing mounting portion 51b to position the fourth bearing 15, the third bearing 14 is mounted on the housing 1, the developing roller shaft 3a is rotatably supported by the second bearing 1201 through the third bearing portion 1201a of the second bearing 1201, and the powder feeding roller shaft 4a is rotatably supported by the fourth bearing 15 through the second bearing portion 15a of the fourth bearing 15. Alternatively, for example, the second bearing 1201 is mounted on the housing 1 and the fourth bearing 15 is mounted on the drive-side edge cover 51, or the second bearing 1201 is mounted on the drive-side edge cover 51 and the fourth bearing 15 is mounted on the housing 1. The reduction of the manufacturing cost of the product can be realized by the application of different materials, and the developing cartridge can be more miniaturized. The second bearing mounting portion 51a and the fourth bearing mounting portion 51b constitute support portions on the drive-side cover 51, respectively, which support the developing roller shaft.
Example 6
The utility model discloses, through the gear train that adopts the compactness set up, optimize the material between bearing and the casing main part and the cooperation design of structure, will develop and be detected on the box and be in the same place with the position integration of electrical contact part on developing the box, scheme such as electrical contact part of location developing the box has realized developing the box miniaturized, has improved the transmission efficiency of gear train, has reduced the moment of torsion of gear train, has reduced developing box manufacturing cost, has improved developing box's dimensional stability.
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 (6)
1. A developing cartridge detachably mountable to an image forming apparatus, comprising:
a housing having a developer accommodating portion that can accommodate a developer;
a coupling member provided on a driving side of the housing and rotatable by receiving a rotational driving force of a driving part in the image forming apparatus;
a developing roller having a developing roller shaft extending in a longitudinal direction of the casing, the developing roller shaft being rotatable about an axis extending in the longitudinal direction;
a developing roller gear provided on a driving side of the casing;
a conductive member electrically connected to the developing roller shaft, provided on a conductive side of the casing, the conductive side being spaced from the driving side in a longitudinal direction of the casing and located on opposite sides;
a detected unit provided on the conductive side, detectable by a detecting unit in the image forming apparatus;
the developing roller is characterized by further comprising a driving side cover, wherein a supporting part capable of supporting the developing roller shaft is arranged on the driving side cover.
2. A developing cartridge according to claim 1, further comprising a second bearing supporting said developing roller shaft, said second bearing being mounted on said supporting portion.
3. A developing cartridge according to claim 2, wherein said second bearing and said edge cover are made of resin materials of different materials.
4. A developing cartridge according to claim 3, wherein said developing roller gear is disposed between said developer accommodating portion and said second bearing in said longitudinal direction.
5. A developing cartridge according to claim 1, further comprising a powder feeding roller for feeding the developer to said developing roller, said powder feeding roller having a powder feeding roller shaft, and said driving side cover being provided with a powder feeding roller shaft supporting portion for supporting said powder feeding roller shaft.
6. A developing cartridge according to claim 5, further comprising a fourth bearing supporting said powder feeding roller shaft, said fourth bearing being mounted on said powder feeding roller shaft supporting portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019213833469 | 2019-08-23 | ||
| CN201921383346 | 2019-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212905904U true CN212905904U (en) | 2021-04-06 |
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ID=75246274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021741359.1U Active CN212905904U (en) | 2019-08-23 | 2020-08-19 | Developing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212905904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023046126A1 (en) * | 2021-09-25 | 2023-03-30 | 江西亿铂电子科技有限公司 | Developing cartridge |
-
2020
- 2020-08-19 CN CN202021741359.1U patent/CN212905904U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023046126A1 (en) * | 2021-09-25 | 2023-03-30 | 江西亿铂电子科技有限公司 | Developing cartridge |
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