Developing box

Abstract

The invention discloses a developing box, and aims to provide a developing box which can avoid carbon powder accumulation, is good in stirring effect and can improve the printing quality. The device comprises a box body, a developing roller, a driving part, a first transmission assembly and a second transmission assembly are arranged in the box body, the driving part is in transmission connection with the first transmission assembly, the first transmission assembly comprises a plurality of first transmission gears which are in transmission connection in sequence, and the second transmission assembly comprises a plurality of second transmission gears which are in transmission connection in sequence; wherein one first transmission gear is connected with a first bevel gear, one second transmission gear is connected with a second bevel gear, the first bevel gear is in transmission connection with the second bevel gear, at least one second transmission gear is connected with a stirring shaft, and the stirring shaft is provided with a stirring part. The rotation axis of the developing roller is not parallel to the rotation axis of the stirring shaft. The invention is applied to the technical field of image forming devices.

Description

Technical Field

[0001] The present invention relates to the technical field of image forming apparatuses, and particularly to a developing cartridge. Background Art

[0002] In the field of laser printing, as an important component of an imaging device, the developing cartridge plays a crucial role. In the prior art, a developing roller and a powder bin for supplying toner are provided in the developing cartridge, and a stirring frame is arranged in the powder bin. The stirring direction of the stirring frame is the same as the rotation direction of the axis of the developing roller, which easily causes uneven stirring of the toner by the stirring frame, resulting in easy accumulation of the toner, and there are problems of poor stirring effect and reduced printing quality. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and provide a developing cartridge that can avoid toner accumulation, has a good stirring effect, and improves printing quality.

[0004] The technical solution adopted by the present invention is: The present invention includes a cartridge body, in which a developing roller, a driving part, a first transmission assembly, and a second transmission assembly are arranged. The driving part is in transmission connection with the first transmission assembly. The first transmission assembly includes a plurality of first transmission gears that are sequentially in transmission connection. The second transmission assembly includes a plurality of second transmission gears that are sequentially in transmission connection. A first bevel gear is connected to one of the first transmission gears, and a second bevel gear is connected to one of the second transmission gears. The first bevel gear is in transmission connection with the second bevel gear. A stirring shaft is connected to at least one of the second transmission gears, and a stirring part is arranged on the stirring shaft. The rotation axis of the developing roller is not parallel to the rotation axis of the stirring shaft.

[0005] Further, the number of the stirring shafts is multiple, and the stirring part is a stirring blade.

[0006] Further, the second transmission assembly further includes a plurality of third transmission gears, and the plurality of third transmission gears are in transmission connection between the plurality of second transmission gears. A plurality of convex columns are arranged in the cartridge body, and the plurality of third transmission gears are respectively rotatably connected to the plurality of convex columns.

[0007] Further, a plurality of concave columns are arranged in the cartridge body, and the lower end of the stirring shaft is connected to the corresponding concave column.

[0008] Further, a driven shaft is arranged in the cartridge body, and the stirring part is a stirring film that is in transmission connection between the stirring shaft and the driven shaft.

[0009] Further, fixing bosses for fixing the stirring film are arranged on both the stirring shaft and the driven shaft.

[0010] Further, a plurality of concave columns are provided in the box body, and the lower ends of the stirring shaft and the driven shaft are connected in the corresponding concave columns.

[0011] Further, the driving part includes a power receiving part, a first driving gear and a second driving gear which are coaxially connected. A powder feeding roller is arranged in the box body. A powder feeding gear is connected to the powder feeding roller, and a developing gear is connected to the developing roller. The powder feeding gear and the first transmission assembly are both in transmission connection with the first driving gear, and the developing gear is in transmission connection with the second driving gear.

[0012] Further, the box body includes a bottom shell and an upper cover. The upper cover covers the bottom shell. The first transmission assembly and the second transmission assembly are respectively located at the side end of the bottom shell and on the upper cover. A first gear cover is arranged on the upper cover, and the first gear cover covers the second transmission assembly. A second gear cover is arranged at the side end of the bottom shell, and the second gear cover covers the first transmission assembly.

[0013] The beneficial effects of the present invention are as follows: Compared with the deficiencies of the prior art, in the present invention, since the first transmission assembly and the second transmission assembly are in transmission connection through the first bevel gear and the second bevel gear, the rotation axis of the developing roller can be non-parallel to the rotation axis of the stirring shaft. Therefore, the present invention can make the stirring part stir the toner more evenly by setting the rotation axis of the stirring shaft to be non-parallel to the rotation axis of the developing roller, and the toner is not easy to agglomerate, improving the printing quality, so that the present invention has the advantages of being able to avoid toner accumulation, having a good stirring effect and improving the printing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0015] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a three-dimensional structural schematic diagram of the box body, the driving part, the first transmission assembly and the second transmission assembly of the present invention; Figure 3 is an exploded structural schematic diagram of the present invention; Figure 4 is an internal structural schematic diagram of the present invention; Figure 5 is Figure 2 a partial enlarged schematic diagram of part A of Figure 6 It is a schematic three-dimensional structure diagram of another embodiment of the stirring part of the present invention; Figure 7 It is a schematic internal structure diagram of the box body of the present invention.

[0016] The reference numerals are as follows: 1. Box body; 2. Developing roller; 3. Driving part; 5. First transmission assembly; 6. Second transmission assembly; 7. First transmission gear; 8. Second transmission gear; 9. First bevel gear; 10. Second bevel gear; 11. Stirring shaft; 12. Stirring part; 13. Third transmission gear; 15. Convex column; 16. Driven shaft; 17. Fixed boss; 18. Concave column; 19. Power receiving part; 20. First driving gear; 21. Second driving gear; 22. Powder feeding roller; 23. Powder feeding gear; 25. Developing gear; 26. Bottom shell; 27. Upper cover; 28. First gear cover; 29. Second gear cover.

[0017] The realization, functional characteristics and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, clockwise, counterclockwise, etc., are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0019] Embodiment 1: As Figures 1 to 5As shown, in this embodiment, the present invention includes a cartridge body 1, in which a developing roller 2, a driving part 3, a first transmission assembly 5 and a second transmission assembly 6 are arranged. The driving part 3 is in transmission connection with the first transmission assembly 5. The first transmission assembly 5 includes a plurality of first transmission gears 7 that are sequentially in transmission connection. The second transmission assembly 6 includes a plurality of second transmission gears 8 that are sequentially in transmission connection. A first bevel gear 9 is connected to one of the first transmission gears 7, and a second bevel gear 10 is connected to one of the second transmission gears 8. The first bevel gear 9 is in transmission connection with the second bevel gear 10. A stirring shaft 11 is connected to at least one of the second transmission gears 8, and a stirring part 12 is arranged on the stirring shaft 11. The rotation axis of the developing roller 2 is not parallel to the rotation axis of the stirring shaft 11.

[0020] It should be noted that it is only necessary to satisfy the state where the rotation axis of the developing roller 2 is not parallel to the rotation axis of the stirring shaft 11. For example, the rotation axis of the developing roller 2 is perpendicular to the rotation axis of the stirring shaft 11, or the two intersect. That is, as long as the embodiment satisfies the non-parallel state, it can also be within the scope of implementation of the present invention.

[0021] Compared with the deficiencies of the prior art, in the present invention, when the developing cartridge is in a normal working state, the driving part 3 is driven by the printing device, so that the driving part 3 can drive a plurality of first transmission gears 7 to rotate. Since the first bevel gear 9 is in transmission connection with the second bevel gear 10, a plurality of second transmission gears 8 are driven to rotate, so that the stirring shaft 11 can rotate to drive the stirring part 12 to stir the toner, thereby stirring the toner in the powder bin. Among them, since the first transmission assembly 5 and the second transmission assembly 6 are in transmission connection through the first bevel gear 9 and the second bevel gear 10, the rotation axis of the developing roller 2 can be not parallel to the rotation axis of the stirring shaft 11. Therefore, the present invention can make the stirring part 12 stir the toner more evenly, the toner is not easy to agglomerate, and the printing quality is improved by setting the rotation axis of the stirring shaft 11 not parallel to the rotation axis of the developing roller 2. The present invention has the advantages of being able to avoid toner accumulation, having a good stirring effect and improving the printing quality.

[0022] Such as Figure 3 and Figure 4As shown, in this embodiment, the number of the stirring shafts 11 is multiple, and the stirring part 12 is a stirring blade; the second transmission assembly 6 further includes multiple third transmission gears 13, and the multiple third transmission gears 13 are drivingly connected between the multiple second transmission gears 8. Multiple convex columns 15 are arranged in the box body 1, and the multiple third transmission gears 13 are respectively rotatably connected to the multiple convex columns 15; multiple concave columns 18 are arranged in the box body 1, and the lower ends of the stirring shafts 11 are connected to the corresponding concave columns 18. Specifically, the number of the stirring shafts 11 can be three as shown in the figure. At this time, the three stirring shafts 11 correspond to three second transmission gears 8, and the three second transmission gears 8 are drivingly connected through the three third transmission gears 13; in addition, through the transmission of the second transmission gears 8 and the third transmission gears 13, the stirring shafts 11 can drive the stirring blades to stir the toner.

[0023] As Figure 5 shown, in this embodiment, the driving part 3 includes a power receiving part 19, a first driving gear 20 and a second driving gear 21 that are coaxially connected. A powder feeding roller 22 is arranged in the box body 1, a powder feeding gear 23 is connected to the powder feeding roller 22, a developing gear 25 is connected to the developing roller 2, the powder feeding gear 23 and the first transmission assembly 5 are both drivingly connected to the first driving gear 20, and the developing gear 25 is drivingly connected to the second driving gear 21. Among them, the power receiving part 19 is a coupling, and it is connected to the printing device through it to receive power. Specifically, the printing device drives the power receiving part 19 to further drive the powder feeding roller 22, the developing roller 2 and the first transmission assembly 5.

[0024] As Figure 3 shown, in this embodiment, the box body 1 includes a bottom shell 26 and an upper cover 27. The upper cover 27 covers the bottom shell 26. The first transmission assembly 5 and the second transmission assembly 6 are respectively located at the side end of the bottom shell 26 and on the upper cover 27. A first gear cover 28 is arranged on the upper cover 27, and the first gear cover 28 covers the second transmission assembly 6. A second gear cover 29 is arranged at the side end of the bottom shell 26, and the second gear cover 29 covers the first transmission assembly 5.

[0025] Embodiment Two: The difference between this embodiment and Embodiment One lies in the specific structure of the stirring part 12. The same structures will not be described again. Specifically as follows: As Figure 6 and Figure 7As shown, in this embodiment, the number of the stirring shafts 11 can be multiple, a driven shaft 16 is provided in the box body 1, and the stirring portion 12 is a stirring film that is transmission-connected to the stirring shaft 11 and the driven shaft 16. Specifically, when the second transmission gear 8 drives the stirring shaft 11 to rotate, the stirring film is transmission-connected to the stirring shaft 11 and the driven shaft 16, so that the driven shaft 16 can rotate simultaneously, thereby stirring the carbon powder; From the above content, it can be seen that since the rotation axes of the stirring shaft 11, the driven shaft 16 and the stirring film are not parallel to the rotation axis of the developing roller 2, the toner is stirred more evenly and the toner is not easy to agglomerate, thereby improving the printing quality.

[0026] In this embodiment, both the stirring shaft 11 and the driven shaft 16 are provided with fixing bosses 17 for fixing the stirring film; the box body 1 is provided with a plurality of recessed columns 18, and the lower ends of the stirring shaft 11 and the driven shaft 16 are connected to the corresponding recessed columns 18. Specifically, the fixing bosses 17 are used to fix the stirring film, which can be a perforated or non-perforated film, to prevent the stirring shaft 11 and the driven shaft 16 from slipping when the stirring film is driven to rotate; in addition, by connecting the lower ends of the stirring shaft 11 and the driven shaft 16 to the corresponding recessed columns 18, stability during the stirring process is improved.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A developing cartridge, characterized in that: It includes a box body (1), in which a developing roller (2), a driving part (3), a first transmission assembly (5) and a second transmission assembly (6) are arranged. The driving part (3) is in transmission connection with the first transmission assembly (5). The first transmission assembly (5) includes a plurality of first transmission gears (7) that are sequentially in transmission connection. The second transmission assembly (6) includes a plurality of second transmission gears (8) that are sequentially in transmission connection. A first bevel gear (9) is connected to one of the first transmission gears (7), and a second bevel gear (10) is connected to one of the second transmission gears (8). The first bevel gear (9) is in transmission connection with the second bevel gear (10). A stirring shaft (11) is connected to at least one of the second transmission gears (8), and a stirring part (12) is arranged on the stirring shaft (11). The rotation axis of the developing roller (2) is not parallel to the rotation axis of the stirring shaft (11).

2. The developing cartridge according to claim 1, wherein: The number of the stirring shafts (11) is multiple, and the stirring part (12) is a stirring blade.

3. The developing cartridge according to claim 2, characterized in that: The second transmission assembly (6) further includes a plurality of third transmission gears (13), and the plurality of third transmission gears (13) are in transmission connection between the plurality of second transmission gears (8). A plurality of convex columns (15) are arranged in the box body (1), and the plurality of third transmission gears (13) are respectively rotatably connected to the plurality of convex columns (15).

4. A developing cartridge according to claim 2 or 3, characterized in that: A plurality of concave columns (18) are arranged in the box body (1), and the lower end of the stirring shaft (11) is connected to the corresponding concave column (18).

5. A developing cartridge according to claim 1, wherein: A driven shaft (16) is arranged in the box body (1), and the stirring part (12) is a stirring film that is in transmission connection between the stirring shaft (11) and the driven shaft (16).

6. The developing cartridge according to claim 5, wherein: Fixing bosses (17) for fixing the stirring film are arranged on both the stirring shaft (11) and the driven shaft (16).

7. A developing cartridge according to claim 5 or 6, characterized in that: A plurality of concave columns (18) are arranged in the box body (1), and the lower ends of the stirring shaft (11) and the driven shaft (16) are connected to the corresponding concave columns (18).

8. A developing cartridge according to claim 1, wherein: The driving part (3) includes a power receiving part (19), a first driving gear (20) and a second driving gear (21) that are coaxially connected. A powder feeding roller (22) is arranged in the box body (1), a powder feeding gear (23) is connected to the powder feeding roller (22), a developing gear (25) is connected to the developing roller (2), the powder feeding gear (23) and the first transmission assembly (5) are both in transmission connection with the first driving gear (20), and the developing gear (25) is in transmission connection with the second driving gear (21).

9. The developing cartridge according to claim 8, characterized in that: The box body (1) includes a bottom shell (26) and an upper cover (27). The upper cover (27) is covered on the bottom shell (26). The first transmission component (5) and the second transmission component (6) are respectively located at the side end of the bottom shell (26) and on the upper cover (27). A first gear cover (28) is provided on the upper cover (27), and the first gear cover (28) is covered on the second transmission component (6). A second gear cover (29) is provided at the side end of the bottom shell (26), and the second gear cover (29) is covered on the first transmission component (5).

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