CN217521485U

CN217521485U - Developing box

Info

Publication number: CN217521485U
Application number: CN202221678703.6U
Authority: CN
Inventors: 胡诚
Original assignee: Zhuhai Un Tern Imaging Products Co ltd
Current assignee: Zhuhai Un Tern Imaging Products Co ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-09-30
Anticipated expiration: 2032-07-01

Abstract

The utility model discloses a developing box. The developing cartridge of the embodiment includes: a cartridge body having a powder bin for accommodating a developer; the rotating shaft is rotatably arranged on the box body and is provided with a connecting part eccentrically arranged relative to the rotating axis of the rotating shaft; the powder feeding plate is arranged in the powder bin; the powder feeding plate is provided with a first side and a second side which are oppositely arranged, the first side of the powder feeding plate is movably connected with the connecting part, the second side of the powder feeding plate is provided with a lifted part, and the powder bin is internally provided with a lifting part which is correspondingly arranged with the lifted part; the lifting part is provided with a lifting surface, and the lifted part can slide back and forth along the lifting surface to enable the second side of the powder feeding plate to reciprocate away from and close to the bottom surface of the powder bin. In the developing box of the embodiment, the first side and the second side of the powder feeding plate can move in the directions parallel and vertical to the bottom surface of the powder bin, so that the whole movement of the powder feeding plate is more complicated while the structure is kept simple, the powder feeding and stirring effects are favorably improved, and the residual powder amount is reduced.

Description

Developing box

Technical Field

The utility model relates to a developing box for electronic photography imaging device.

Background

Electrophotographic image forming apparatuses such as laser printers, copiers, facsimile machines, and the like are generally provided with a detachably mountable developing cartridge including a powder hopper for storing developer and a developing hopper in which a developing roller is rotatably disposed. In the image forming process, the developer in the powder hopper is conveyed into the developing hopper and is supplied to the photosensitive drum by the developing roller, and the electrostatic latent image on the photosensitive drum is developed.

In the prior art, there is a type of developing cartridge, in which a powder feeding plate is provided in a powder hopper for feeding a developer in the powder hopper to a developing hopper. In the existing developing box of this type, the powder feeding plate is arranged to horizontally reciprocate toward and away from the developing chamber to realize the conveyance of the developer, but this powder feeding structure is difficult to achieve a good stirring effect on the developer in the powder chamber, so that the developer is not only easily agglomerated into lumps, but also easily adhered to the powder feeding plate, and the amount of residual powder is large.

Disclosure of Invention

The utility model mainly aims at providing a send whitewashed simple structure and be favorable to improving the developer stirring effect and reduce the development box of incomplete powder volume.

In order to achieve the above-described main object, an embodiment provides a developing cartridge including:

a cartridge body having a powder bin for accommodating a developer;

a rotating shaft rotatably provided on the case body and having a connecting portion eccentrically provided with respect to a rotational axis thereof;

the powder feeding plate is arranged in the powder bin; the powder feeding plate is provided with a first side and a second side which are oppositely arranged, and the first side of the powder feeding plate is movably connected with the connecting part on the rotating shaft;

the second side of the powder conveying plate is provided with a lifted part, and the powder bin is internally provided with a lifting part corresponding to the lifted part; the lifting part is provided with a lifting surface, and the lifted part can slide back and forth along the lifting surface to enable the second side of the powder feeding plate to reciprocate away from and close to the bottom surface of the powder bin.

Among the above-mentioned technical scheme, the first side of sending the powder board is connected with the connecting portion of the epaxial eccentric settings of pivot, the second side of sending the powder board be equipped with the powder storehouse in promote the portion complex by promoting the portion, when the pivot is rotatory, the first side and the second side of sending the powder board all can produce the motion in the direction parallel and the vertically with powder storehouse bottom surface, make the overall motion who sends the powder board more complicated when keeping simple structure, be favorable to improving and send powder and stirring effect, prevent that the developer caking from agglomerating and bonding and sending the powder board surface, and reduce the residual powder volume.

According to the utility model discloses a concrete implementation mode, in the rotation period of pivot, send the promotion motion process of the first side of powder board and second side to go on asynchronously. Like this, send the first side and the second side of powder board can be in the time of difference towards the direction perk of keeping away from the powder storehouse bottom surface, not only can stir the developer in the powder storehouse better, more be favorable to shaking off the developer that send on the powder board moreover to can prevent better that the developer caking from agglomerating and gluing on sending the powder board surface.

According to the utility model discloses a concrete implementation mode, send whitewashed board respectively to be equipped with one at the ascending both ends of the length direction of its second side and promoted the portion for send the promotion process of whitewashed board second side more steady.

According to the utility model discloses a concrete implementation mode, in the direction of perpendicular to powder storehouse bottom surface, promote the portion and be promoted the portion and all be located the outline scope of sending the powder board outside to can not produce the blockking of carrying the developer.

According to a specific embodiment of the present invention, the lifting portion is provided on the bottom surface of the powder silo and protrudes from the bottom surface of the powder silo.

According to a specific embodiment of the utility model, the lifting surface is cambered surface, inclined plane or the combination of the two. Wherein, the inclination angle of the inclined plane relative to the bottom surface of the powder bin can be 30-60 degrees.

According to the utility model discloses a concrete implementation mode, the first side of sending the whitewashed board is equipped with the spread groove, and the epaxial connecting portion of commentaries on classics are the eccentric shaft, and the eccentric shaft activity sets up in the spread groove.

In a more specific embodiment, the connecting groove is provided with an opening end into which the eccentric shaft is pressed, and two opposite sides of the opening end are provided with limiting parts for preventing the eccentric shaft from being separated, so that the powder feeding plate and the eccentric shaft can be assembled quickly.

In a more specific embodiment, the connecting groove has a depth greater than a width so that the first side of the powder feeding plate and the eccentric shaft can make relative movement in a direction perpendicular to the bottom surface of the powder hopper. Like this, in the direction of perpendicular to powder storehouse bottom surface, send the stroke of the first side of powder board to be less than the stroke of eccentric shaft to can design the eccentric distance of eccentric shaft bigger, in order to increase and send the stroke of powder board in the powder direction of sending, further promote the powder effect of sending, and can improve the utilization ratio of developer in the powder storehouse.

To more clearly illustrate the objects, technical solutions and advantages of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Drawings

FIG. 1 is a perspective view of an embodiment of a developing cartridge of the present invention;

FIG. 2 is a top view of an embodiment of a developer cartridge of the present invention;

FIG. 3 is a sectional view A-A of FIG. 2;

fig. 4 is a partially enlarged view of a portion B in fig. 1;

FIG. 5 is a structural view of a rotary shaft in the embodiment;

FIG. 6 is a structural view of a powder feeding plate in the embodiment;

fig. 7 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but it will be readily apparent to those skilled in the art that the present invention may be practiced in other ways than those specifically described herein. Therefore, other implementations that can be realized by a person skilled in the art based on the described embodiments belong to the protection scope of the present invention.

Fig. 1 to 3 show the structure of the developing cartridge in the embodiment, wherein the cover plate, the developing roller, the powder feeding roller, the driving mechanism and the like which omit the cartridge body do not affect the parts/mechanisms understood by the technical solution of the present invention, and the structure of the omitted parts/mechanisms can refer to the prior art and is not described again.

In the developing cartridge of the embodiment, as shown in fig. 1 to 3, the cartridge body 10 is substantially flat and has a powder bin 10a and a developing bin 10b which are communicated with each other, the developing roller and the powder feeding roller are rotatably arranged in the developing bin 10b, a powder feeding plate 30 is arranged in the powder bin 10a for containing the developer, and the powder feeding plate 30 is provided with through holes 33 distributed in an array; a rotating shaft 20 movably connected with the powder feeding plate 30 is arranged at one side of the powder bin 10a close to the developing bin 10b, and the rotating shaft 20 is rotatably arranged on the box body 10.

As shown in fig. 2 and 5, the rotating shaft 20 has an eccentric shaft 21 as an example of a connecting portion, and the eccentric shaft 21 is eccentrically disposed with respect to the rotational axis of the rotating shaft 20. As shown in fig. 2 and 6, the powder feeding plate 30 has a first side 30a and a second side 30b which are oppositely arranged, and the first side 30a of the powder feeding plate 30 is movably connected with the eccentric shaft 21; when the powder feeding device works, the driving mechanism drives the developing roller, the powder feeding roller and the rotating shaft 20 to rotate, the powder feeding plate 30 connected with the rotating shaft 20 conveys the developer in the powder bin 10a into the developing bin 10b, and the powder feeding roller uniformly adheres the developer conveyed into the developing bin 10b to the developing roller.

As shown in fig. 2 to 6, in an alternative embodiment, the first side 30a of the powder feeding plate 30 is provided with two connecting protrusions 31, and the two connecting protrusions 31 are respectively arranged at two ends of the powder feeding plate 30 in the length direction of the first side 30a of the powder feeding plate 30. The connecting projection 31 is formed with a connecting slot 311, and the rotating shaft 20 is provided with an eccentric shaft 21 at a position corresponding to the connecting slot 311, and the eccentric shafts 21 are movably arranged in the connecting slot 311. An elastic stirring blade 22 (see fig. 5) may be disposed on the rotating shaft 20, and the stirring blade 22 may stir the developer conveyed to the rotating shaft 20 and push the developer into the developing chamber 10b, so as to prevent the developer from accumulating on the powder outlet side of the powder chamber 10a (i.e., the side adjacent to the developing chamber 10 b).

As shown in fig. 3, the connecting groove 311 has an open end into which the eccentric shaft 21 is pressed, and restricting portions 312 for preventing the eccentric shaft 21 from coming off are provided on opposite sides of the open end. Preferably, the connecting slot 311 has a depth larger than a width, so that the first side 30a of the powder feeding plate 30 and the eccentric shaft 31 can generate relative movement in a Z direction perpendicular to the bottom surface 11a of the powder hopper. With such a structure, the stroke of the first side 30a of the powder feeding plate 30 in the Z direction is smaller than the stroke of the eccentric shaft 21 in the Z direction, so that the eccentric distance between the eccentric shaft 21 and the rotation axis of the rotation shaft 20 can be designed to be larger without changing the size of the powder bin 10a in the Z direction, and the stroke of the powder feeding plate 30 in the X direction (powder feeding direction) can be increased, thereby achieving a better powder feeding effect.

As shown in fig. 2 and 7, the second side 30b of the powder feeding plate 30 is provided with a lifted portion 32, and the powder bin 10a has therein a lifting portion 12 provided corresponding to the lifted portion 32; wherein the number of the lifted portion 32 and the lifting portion 12 may be one or more. In an alternative embodiment, as shown in fig. 2, the powder feeding plate 30 is provided with a lifted portion 32 at each end of the second side 30b in the length direction, so that the lifting process of the second side 30b of the powder feeding plate is smoother.

As shown in fig. 2, in the Z direction perpendicular to the powder hopper bottom surface 11a, both the lifting portion 12 and the lifted portion 32 are located outside the outline of the powder feeding plate 30, so that no obstruction to the developer conveyance is generated. In an alternative embodiment, the lifting portion 12 may be provided on the bottom surface 11a of the powder hopper 10a and protrude from the bottom surface 11a of the powder hopper 10; wherein, the lifting part 12 can also be connected with the side 11b of the powder bin 10a at the same time to enhance the structural strength thereof. In other embodiments of the present invention, the lifting portion 12 may be disposed on the side 11b of the powder bin 10a, but not connected to the bottom 11a of the powder bin 10 a.

The lifting portion 12 has a lifting surface 121. In operation, as the rotating shaft 20 rotates, the lifted portion 31 can slide back and forth along the lifting surface 121, so that the second side 30b of the powder feeding plate 30 moves back and forth away from and toward the bottom surface 11 of the powder hopper 10 a. Specifically, when the lifted portion 32 moves onto the lifting surface 121 toward the downstream side in the powder feeding direction X, the second side 30b of the powder feeding plate 30 is lifted by the lifting surface 121 to be gradually separated from the powder hopper bottom surface 11 a; during the movement of the lifted portion 32 to the upstream side in the powder feeding direction X, the second side 30b of the powder feeding plate 30 gradually approaches the powder hopper bottom surface 11a as the lifted portion 32 slides in the reverse direction along the lifting surface 121, and finally comes into contact with the powder hopper bottom surface 11 a.

Referring to fig. 7, the lifting surface 121 in the illustrated embodiment is an inclined surface inclined with respect to the bottom surface 11a of the powder hopper, and the inclined surface may have an inclination angle of 30 ° to 60 °, for example, about 50 °, with respect to the bottom surface 11. In other embodiments of the present invention, the lifting surface 121 may also be a curved surface, or a combination of a slant surface and a slant surface.

Further, as shown in fig. 7, the lifting portion 12 may further include a bearing surface 122 parallel to the bottom surface 11a of the powder bin, and an arc transition may be formed between the bearing surface 122 and the lifting surface 121. When the lifted portion 32 slides on the bearing surface 122, the height of the second side 30b of the powder feeding plate 30 with respect to the powder hopper bottom surface 11a is kept constant.

When the developing box works, the rotating shaft 20 rotates clockwise with the orientation shown in fig. 3 as a reference, because the first side 30a of the powder feeding plate 30 is connected with the eccentric shaft 21, and the second side 30b of the powder feeding plate 30 is provided with the lifted part 32 matched with the lifting part 12 in the powder bin 10a, the first side 30a and the second side 30b of the powder feeding plate 30 can move in the X direction and the Z direction, the whole movement of the powder feeding plate 30 is more complicated while the structure is kept simple, the powder feeding and stirring effects are improved, the developer is prevented from agglomerating and bonding on the surface of the powder feeding plate 30, and the residual powder amount is reduced.

Preferably, the lifting movement of the first side 30a and the second side 30b of the powder feeding plate 30 (i.e., the movement in the direction away from the bottom surface 11a of the powder bin) is not synchronized during the rotation period of the rotating shaft 20. Thus, the first side 30a and the second side 30b of the powder feeding plate 30 can be lifted up in a direction away from the powder bin bottom 11a at different times, which can better stir the developer in the powder bin 10a, and is more favorable for shaking off the developer on the powder feeding plate 30, thereby better preventing the developer from agglomerating and bonding on the surface of the powder feeding plate 30, and improving the utilization rate of the developer in the powder bin 10 a.

Although the present invention has been described above by way of examples, it should be understood that the above examples are merely illustrative of the possible embodiments of the present invention and should not be read as limiting the scope of the present invention, i.e. all equivalent permutations or variations that can be made by those skilled in the art in accordance with the present invention should also be covered by the scope of the claims of the present invention.

Claims

1. A developing cartridge comprising:

a cartridge body having a powder bin for containing a developer;

the powder feeding plate is arranged in the powder bin; the powder feeding plate is provided with a first side and a second side which are oppositely arranged, and the first side of the powder feeding plate is movably connected with the connecting part;

the method is characterized in that: a lifted part is arranged on the second side of the powder feeding plate, and a lifting part corresponding to the lifted part is arranged in the powder bin; the lifting part is provided with a lifting surface, and the lifted part can slide along the lifting surface in a reciprocating mode so as to enable the second side of the powder feeding plate to move away from and close to the bottom surface of the powder bin in a reciprocating mode.

2. A developing cartridge according to claim 1, wherein: in the rotation period of the rotating shaft, the lifting motion processes of the first side and the second side of the powder feeding plate are not synchronous.

3. A developing cartridge according to claim 1, wherein: the two ends of the powder feeding plate in the length direction of the second side are respectively provided with one lifted part.

4. A developing cartridge according to claim 1, wherein: in the direction perpendicular to the bottom surface of the powder bin, the lifting part and the lifted part are both positioned outside the outline range of the powder feeding plate.

5. A developing cartridge according to claim 1, wherein: the lifting part is arranged on the bottom surface of the powder bin and protrudes from the bottom surface of the powder bin.

6. A developing cartridge according to claim 1, wherein: the lifting surface is an arc surface, an inclined surface or a combination of the arc surface and the inclined surface.

7. A developing cartridge according to claim 6, wherein: the inclination angle of the inclined plane relative to the bottom surface of the powder bin is 30-60 degrees.

8. A developing cartridge according to claim 1, wherein: the first side of the powder conveying plate is provided with a connecting groove, the connecting part is an eccentric shaft, and the eccentric shaft is movably arranged in the connecting groove.

9. A developing cartridge according to claim 8, wherein: the connecting groove is provided with an opening end for pressing the eccentric shaft in, and limiting parts for preventing the eccentric shaft from falling off are arranged on two opposite sides of the opening end.

10. A developing cartridge according to claim 8, wherein: the connecting groove is deeper than wide, so that the first side of the powder feeding plate and the eccentric shaft can generate relative movement in a direction vertical to the bottom surface of the powder bin.