CN216160975U - Developing box - Google Patents

Developing box Download PDF

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Publication number
CN216160975U
CN216160975U CN202122288602.XU CN202122288602U CN216160975U CN 216160975 U CN216160975 U CN 216160975U CN 202122288602 U CN202122288602 U CN 202122288602U CN 216160975 U CN216160975 U CN 216160975U
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China
Prior art keywords
gear
developing
stirring frame
frame
developer
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CN202122288602.XU
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Chinese (zh)
Inventor
晏梅
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Jiangxi Yibo Electronic Technology Co Ltd
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Jiangxi Yibo Electronic Technology Co Ltd
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • G03G15/0889—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for agitation or stirring
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1839—Means for handling the process cartridge in the apparatus body
    • G03G21/1857—Means for handling the process cartridge in the apparatus body for transmitting mechanical drive power to the process cartridge, drive mechanisms, gears, couplings, braking mechanisms
    • G03G21/186—Axial couplings

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

The utility model discloses a detachable developing box installed in an image forming device, comprising a shell, a developing device and a fixing device, wherein the shell is provided with a developing agent containing part capable of containing developing agent; a developing roller rotatable about a rotation axis extending in the longitudinal direction; a first stirring frame for stirring the developer; the first stirring frame gear is used for receiving a rotary driving force and driving the first stirring frame to rotate; a second stirring frame for stirring the developer; the second stirring frame gear is used for receiving the rotary driving force and driving the second stirring frame to rotate; the casing is in the relative first side and the second side that sets up of longitudinal direction, the developer roll set up in between first side and the second side, first stirring frame gear set up in first side, second stirring frame gear set up in the second side. The torque of the gear train on the driving side of the developing cartridge is reduced, the transmission efficiency of the gear train on the driving side is increased, and the production cost is also reduced.

Description

Developing box
Technical Field
The present invention relates to a developing cartridge detachably mountable to an 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 developer, and the cartridge is removed from the main body of the apparatus after the developer in the developing cartridge is used up. 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 developing cartridge is configured to be detachably mounted in the image forming apparatus and replaceable, which facilitates maintenance and use by a user, but with the progress of image forming technology and the saving of a use space by a user, it is necessary to provide a more miniaturized image forming apparatus and developing cartridge, and in addition, for convenience of transportation and reduction of transportation cost, it is desirable that the developing cartridge is more miniaturized, and an excessively large developing cartridge also suffers from problems of too long arrangement length of a gear train, resulting in an increase in production cost and a reduction in power transmission efficiency of gears, and in addition, gears are also subject to tooth skipping and an increase in torque due to excessively long arrangement during transmission.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a miniaturized developing box, which can reduce the occupied space of the developing box and the transportation cost of the developing box.
In order to achieve the technical effects, the utility model is realized by the 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 developing roller rotatable about a rotation axis extending in the longitudinal direction;
a first stirring frame for stirring the developer;
the first stirring frame gear is used for receiving a rotary driving force and driving the first stirring frame to rotate;
a second stirring frame for stirring the developer;
the second stirring frame gear is used for receiving the rotary driving force and driving the second stirring frame to rotate;
the casing is in the relative first side and the second side that sets up of longitudinal direction, the developer roll set up in between first side and the second side, first stirring frame gear set up in first side, second stirring frame gear set up in the second side.
Further, the device also comprises a coupling member and a conductive member; the coupling member is disposed at the first side and is rotatable by receiving the rotational driving force of a driving part in the image forming apparatus, and the conductive member is disposed at the second side.
Further, the second agitator includes a second agitator shaft, a first end of the second agitator shaft passing through the inner wall of the second side, a second end of the second agitator shaft remaining within the housing.
Further, still include the powder feed roller, the powder feed roller sets up the front end in the transverse direction of casing, the second stirring frame is closer to the powder feed roller for first stirring frame.
Further, an idler gear provided at the driving side is further included, the idler gear being engaged with the coupling member and the first agitating frame gear to transmit the rotational driving force to the first agitating frame gear.
Further, the transmission gear is used for receiving the rotary driving force and is arranged on the second side and meshed with the second stirring frame gear, so that the second stirring frame gear rotates along with the transmission gear.
Further, the powder feeding roller comprises a powder feeding roller shaft, and the transmission gear is arranged at one end, located on the second side, of the powder feeding roller shaft and rotates along with the powder feeding roller shaft.
Further, still include the developer roll, the developer roll includes the developer roll axle, the transfer gear set up in the developer roll axle is located second side one end and follows the developer roll axle is rotatory.
Further, the second agitator gear may at least partially overlap the conductive member as viewed in the longitudinal direction of the housing
Further, the second agitating carrier gear and the coupling member have an overlapping portion as viewed from the longitudinal direction of the housing.
After the technical scheme is adopted, the gear structure of the developing box can be compact, the phenomenon that a plurality of idle wheel transmission structures are arranged between the stirring frame gear and the coupling gear in the prior art is avoided, the torque of the gear train on the driving side of the developing box is reduced, the transmission efficiency of the gear train on the driving side is increased, and meanwhile, the production cost is also reduced.
Drawings
Fig. 1 is a first perspective assembly view of a developing cartridge provided in the present invention;
FIG. 2 is a perspective view of a second perspective view of the developing cartridge provided in the present invention;
FIG. 3 is a schematic view of a second perspective exploded view of the developing cartridge provided by the present invention;
fig. 4 is a schematic structural view of a developing cartridge driving side borderless cover according to an embodiment of the present invention;
FIG. 5 is an exploded view of the conductive side of the developer cartridge provided by an embodiment of the utility model;
fig. 6 is a schematic layout view of a first agitating frame and a second agitating frame of the developing cartridge according to the embodiment of the present invention;
fig. 7 is a schematic front view of a developing cartridge driving side marginless cover provided in embodiment 1 of the present invention;
fig. 8 is a schematic front view of the conductive side of the developing cartridge provided in embodiment 1 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 utility model and are not intended to limit the utility model.
As shown in fig. 1 to 8, the developing cartridge 100 of the present invention is detachably mounted in an image forming apparatus 200, and includes a housing 1 fillable with developer, a housing 1 having a containing space therein for containing developer, a developing roller 2 and a powder feeding roller 3 supported by the housing 1, the developing roller 2 and the powder feeding roller 3 being rotatably provided in the housing 1 and extending in a longitudinal direction of the housing 1, a rotational axial direction of the developing roller 2 being a longitudinal direction of the developing cartridge 100, a direction perpendicular to the axial direction of the developing roller 2 being a lateral direction of the developing cartridge 100, the developing roller 2 being provided at a front end in the lateral direction of the housing 1, and a handle 11 provided at a rear side in the lateral direction of the housing 1 for a user to grip. A coupling member 4 is provided at one side end of the housing 1 in the longitudinal direction, the coupling member 4 is for engaging with a driving part (not shown in the figure) in the image forming apparatus 200 to receive a driving force, the side where the coupling member 4 is located is referred to as a driving side of the developing cartridge 100, the other end of the developing cartridge 100 opposite to the coupling member 4 in the longitudinal direction is provided with a conductive member 40 for electrically connecting to the developing roller 2, the conductive member 40 is for contacting with an electric output part (not shown in the figure) in the image forming apparatus 200 to charge the developing roller 2, the side where the conductive member 40 is located is referred to as a conductive side of the developing cartridge 100, and the driving side has a driving side cover 12 for preventing the coupling member 4 and the like from being detached.
As shown in fig. 4, the driving side of the developing cartridge 100 in the present embodiment includes a coupling member 4, a developing roller gear 5, a powder feed roller gear 6, an idler gear 7, and a first agitating frame gear 8. The coupling member 4 is provided with a coupling portion 4a and a first tooth portion 4b, wherein the coupling portion 4a and the first tooth portion 4b are sequentially arranged along the longitudinal direction of the casing 1, the first tooth portion 4b is also engaged with the developing roller gear 5 to transmit the driving force to the developing roller gear 5, the first tooth portion 4b is engaged with the powder feeding roller gear 6 to transmit the driving force to the powder feeding roller gear 6, the idle gear 7 is engaged with the first tooth portion 4b, and the first stirring frame gear 8 is engaged with the idle gear 7 to transmit the driving force to the first stirring frame gear 8. The developing roller gear 5 is mounted at the axial end of the developing roller shaft 2a of the developing roller 2, the powder feeding roller gear 6 is mounted at the axial end of the powder feeding roller shaft 3a side, and the first agitating frame gear 8 is provided at the axial end of the first agitating frame shaft 20 a. The first agitating blade 20 is for agitating the developer contained in the casing 1 in the direction of the powder feed roller 3, the powder feed roller 3 being for feeding the developer onto the developing roller 2, and the developing roller 2 being for developing an upper electrostatic latent image formed on the photosensitive drum.
As shown in fig. 6, a first stirring frame 20 and a second stirring frame 30 are provided in the casing 1, the second stirring frame 30 is closer to the powder feeding roller 3 in the transverse direction with respect to the first stirring frame 20, the first stirring frame 20 and the second stirring frame 30 are both used for stirring the developer in the casing 1, the housing space of the casing 1 is divided into a first developer storage area 13a and a second developer storage area 13b, the first developer storage area 13a is located on the rear side in the transverse direction, the second developer storage area 13b is located on the front end in the transverse direction, the capacity of the first developer storage area 13a is larger than that of the second developer storage area 13b, the first stirring frame 20 is provided in the first developer storage area 13a, the second stirring frame 30 is provided in the second developer storage area 13b, when the first stirring frame 20 rotates, the first stirring frame 20 can make the developer in the first developer storage area 13a flow to the second developer storage area 13b, when the second agitating frame 30 rotates, the second agitating frame 30 may flow the developer of the second developer storage area 13b toward the powder feeding roller 3.
As shown in fig. 5 and 8, a transmission gear 9 and a second agitator gear 10 are provided on the conductive side of the developing cartridge 100. The second agitator gear 10 is mounted on the axial end of the second agitator shaft 30a, and the transmission gear 9 is disposed opposite to the powder feed roller gear 6 in the longitudinal direction of the developing cartridge 100, which is mounted on the axial end on the other side of the powder feed roller shaft 3 a. The powder feeding roller shaft 3a receives the driving force of the powder feeding roller gear 6 to rotate and transmits the rotating force to the transmission gear 9, and the second stirring frame gear 10 is engaged with the transmission gear 9, receives the driving force transmitted by the transmission gear 9 and drives the second stirring frame 30 to rotate. In another embodiment, the transmission gear 9 is disposed opposite to the developing roller 2 in the longitudinal direction of the developing cartridge 100, and is installed at one end of the developing roller 2 on the conductive side, the developing roller shaft 2a receives the driving force of the developing roller gear 5 to rotate and transmits the rotational force to the transmission gear 9, and the second agitating frame gear 10 is engaged with the transmission gear 9, receives the driving force transmitted by the transmission gear 9, and drives the second agitating frame 30 to rotate. A driving force transmission gear set of a force transmission gear or a plurality of force transmission gears may be further provided between the transmission gear 9 and the second agitator gear 10 for driving force transmission. In general, the first and second agitator gears are located on either side of the housing in the longitudinal direction, in this embodiment the first agitator gear is located on the drive side and the second agitator gear is located on the conductive side, but it is also conceivable that the first agitator gear is located on the conductive side and the second agitator gear is located on the drive side, for example, the conductive member is located on one side of the housing and the coupling member is located on the other side of the housing, in which case the first agitator gear is located on the conductive side and the second agitator gear is located on the drive side.
The first agitation frame 20 and the second agitation frame 30 may have various structures, and in the present embodiment, the first agitation frame 20 includes a first agitation frame shaft 20a and agitation blades having a flat plate-like structure formed to extend from an edge of the first agitation frame shaft 20a toward a center, a pitch of each agitation blade being changed in a continuous manner, the agitation blades being used to agitate the developer in the first developer storage area 13 a. The second agitating frame 30 is formed in a crank-like structure, and since the second developer storage area 13b is relatively small in space, the second agitating frame 30 in the crank-like structure can be well adapted to the second developer storage area 13b, and uniform delivery of the developer can be ensured. In other embodiments, the stirring blade may have a spiral structure or the like to uniformly convey the developer.
As shown in fig. 5 and 8, the conductive member 40 is provided with a developing roller shaft 2a bearing in which one end of the developing roller shaft 2a on the conductive side is rotatably supported and a powder feeding roller shaft 3a bearing in which one end of the powder feeding roller shaft 3a on the conductive side is rotatably supported, the second agitating frame gear 10 is located between the powder feeding roller shaft 3a bearing and the housing 1 in the longitudinal direction, one end of the second agitating frame shaft 30a on the conductive side is configured as a "D" type structure to which the second agitating frame gear 10 is fixedly connected so that the second agitating frame gear 30 rotates following the second agitating frame gear 10. In the present embodiment, the second stirring frame gear 10 at least partially overlaps the conductive member 40 when viewed from the longitudinal direction, and preferably, the second stirring frame gear 10 completely overlaps the conductive member 40, and the conductive member 40 covers the second stirring frame gear 10 to protect the second stirring frame gear 10.
As shown in fig. 6 and 7, in the present embodiment, the second stirring frame gear 10 has an overlapping portion with the coupling member 4, and the second stirring frame gear 10 has an overlapping portion with the powder feeding roller gear 6, as viewed from the longitudinal direction; further, the second agitator shaft 30a and the coupling member 4 have an overlapping portion as viewed in the longitudinal direction; in order to facilitate the mounting of the first agitation frame shaft and further reduce the size of the developing cartridge 100, the first end of the first agitation frame shaft 20a near the driving side of the developing cartridge 100 is passed through the first hole provided on the inner wall of the driving side of the casing 1, the main portion of the first agitation frame shaft 20a and the second end of the first agitation frame shaft 20a near the conductive side are left inside the inner wall of the conductive side of the casing 1, that is, the first end of the first agitation frame shaft 20a is passed through the inner wall of the driving side of the casing 1, and the second end and the main portion of the first agitation frame shaft 20a are not passed through the inner wall of the conductive side of the casing 1 and left inside the developer accommodating portion of the casing 1 accommodating the developer. Also, the first end of the second agitator shaft 30a close to the conductive side of the developing cartridge 100 is passed through the second hole provided on the inner wall of the conductive side of the casing 1, the main body portion of the second agitator shaft 30a and the second end of the second agitator shaft 30a close to the driving side remain inside the inner wall of the driving side of the casing 1, that is, the first end of the second agitator shaft 30a passes through the inner wall of the conductive side of the casing 1, and the second end and the main body portion of the second agitator shaft 30a do not pass through the inner wall of the driving side of the casing 1 and remain inside the developer accommodating portion of the casing 1 accommodating the developer.
According to the utility model, through adopting a simple gear train arrangement, the gear structure of the developing box is compact, the transmission of the first stirring frame gear, the second stirring frame gear and the coupling gear through a complex transmission structure of a plurality of idle wheels on the driving side in the prior art is avoided, the torque of the gear train of the developing box is reduced, the transmission efficiency of the gear train is improved, the production cost is reduced, the miniaturization of the developing box is realized, and the dimensional stability of the developing box is improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention 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 solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

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 developing roller rotatable about a rotation axis extending in a longitudinal direction;
a first stirring frame for stirring the developer;
the first stirring frame gear is used for receiving a rotary driving force and driving the first stirring frame to rotate;
a second stirring frame for stirring the developer;
the second stirring frame gear is used for receiving the rotary driving force and driving the second stirring frame to rotate;
the developing device is characterized in that the shell is arranged on a first side and a second side which are opposite to each other in the longitudinal direction, the developing roller is arranged between the first side and the second side, the first stirring frame gear is arranged on the first side, and the second stirring frame gear is arranged on the second side.
2. A developing cartridge according to claim 1, further comprising a coupling member and a conductive member; the coupling member is disposed at the first side and is rotatable by receiving the rotational driving force of a driving part in the image forming apparatus, and the conductive member is disposed at the second side.
3. A developer cartridge according to claim 1, wherein said second agitator includes a second agitator shaft, a first end of said second agitator shaft passing through an inner wall of said second side, a second end of said second agitator shaft remaining within said housing.
4. A developing cartridge according to claim 1, further comprising a powder feeding roller provided at a front end in a lateral direction of said casing, said second agitating frame being closer to said powder feeding roller than said first agitating frame.
5. A developing cartridge according to claim 2, further comprising an idle gear provided on said first side, said idle gear being engaged with said coupling member and said first agitating frame gear to transmit said rotational driving force to said first agitating frame gear.
6. A developing cartridge according to claim 1, further comprising a transmission gear for receiving said rotational driving force, said transmission gear being provided on said second side and being engaged with said second agitating frame gear so that said second agitating frame gear rotates following said transmission gear.
7. A developing cartridge according to claim 6, further comprising a powder feeding roller including a powder feeding roller shaft, wherein said transmission gear is provided at an end of said powder feeding roller shaft on the second side and rotates along with said powder feeding roller shaft.
8. A developing cartridge according to claim 6, wherein said developing roller includes a developing roller shaft, and said transmission gear is provided at an end of said developing roller shaft on said second side and rotates following said developing roller shaft.
9. A developing cartridge according to claim 2, wherein said second agitator gear at least partially overlaps said conductive member as viewed in a longitudinal direction of said casing.
10. A developing cartridge according to claim 2, wherein said second agitating carrier gear and said coupling member have an overlapping portion as viewed in a longitudinal direction of said casing.
CN202122288602.XU 2020-09-25 2021-09-22 Developing box Active CN216160975U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202022137136 2020-09-25
CN2020221371360 2020-09-25

Publications (1)

Publication Number Publication Date
CN216160975U true CN216160975U (en) 2022-04-01

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Family Applications (2)

Application Number Title Priority Date Filing Date
CN202111107028.1A Pending CN114253110A (en) 2020-09-25 2021-09-22 Developing box
CN202122288602.XU Active CN216160975U (en) 2020-09-25 2021-09-22 Developing box

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN202111107028.1A Pending CN114253110A (en) 2020-09-25 2021-09-22 Developing box

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CN (2) CN114253110A (en)

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Publication number Publication date
CN114253110A (en) 2022-03-29

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