Developing box

Abstract

The utility model 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 developing box 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 image forming device is applied to the technical field of image forming devices.

Description

Technical Field

[0001] This utility model relates to the technical field of image forming apparatus, and in particular to a developing cartridge. Background Technology

[0002] In the field of laser printing, the developing cartridge plays a crucial role as an important component of the imaging equipment. Current technology includes a developing roller and a toner hopper within the developing cartridge. The toner hopper contains a stirring rack, whose stirring direction is aligned with the axis of rotation of the developing roller. This can easily lead to uneven toner mixing, causing toner accumulation, poor mixing performance, and reduced print quality. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a developer cartridge that can avoid toner accumulation, have a good stirring effect and improve printing quality.

[0004] The technical solution adopted by this utility model is as follows: This utility model includes a housing, in which a developing roller, a driving unit, a first transmission assembly, and a second transmission assembly are disposed. The driving unit is connected to the first transmission assembly. The first transmission assembly includes a plurality of first transmission gears connected in sequence. The second transmission assembly includes a plurality of second transmission gears connected in sequence. 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 and the second bevel gear are connected in a driving connection. At least one of the second transmission gears is connected to a stirring shaft. A stirring unit is disposed on the stirring shaft. The rotation axis of the developing roller is not parallel to the rotation axis of the stirring shaft.

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

[0006] Furthermore, the second transmission assembly also includes a plurality of third transmission gears, which are tractively connected between the plurality of second transmission gears. The housing is provided with a plurality of protrusions, and the plurality of third transmission gears are rotatably connected to the plurality of protrusions respectively.

[0007] Furthermore, the box body is provided with a plurality of recessed columns, and the lower end of the stirring shaft is connected to the corresponding recessed column.

[0008] Furthermore, the box body is provided with a driven shaft, and the stirring part is a stirring membrane that is drivenly connected to the stirring shaft and the driven shaft.

[0009] Furthermore, both the stirring shaft and the driven shaft are provided with fixing bosses for fixing the stirring membrane.

[0010] Furthermore, the box body is provided with a plurality of recessed columns, and the lower ends of the stirring shaft and the driven shaft are connected to the corresponding recessed columns.

[0011] Furthermore, the driving unit includes a power receiving unit, a first driving gear, and a second driving gear coaxially connected. A powder feeding roller is provided in the housing, and a powder feeding gear is connected to the powder feeding roller. A developing gear is connected to the developing roller. The powder feeding gear and the first transmission assembly are both connected to the first driving gear, and the developing gear is connected to the second driving gear.

[0012] Furthermore, the box body includes a bottom shell and a top cover, the top cover being fitted onto the bottom shell, the first transmission component and the second transmission component being located on the side end of the bottom shell and the top cover respectively, the top cover being provided with a first gear cover, the first gear cover being fitted onto the second transmission component, the side end of the bottom shell being provided with a second gear cover, the second gear cover being fitted onto the first transmission component.

[0013] The beneficial effects of this utility model are:

[0014] In contrast to the shortcomings of existing technologies, in this invention, the first transmission component and the second transmission component are connected by a first bevel gear and a second bevel gear, allowing the rotation axis of the developing roller to be non-parallel to the rotation axis of the stirring shaft. Therefore, this invention, by setting the rotation axis of the stirring shaft to be non-parallel to the rotation axis of the developing roller, enables the stirring part to stir the toner more evenly, making the toner less prone to clumping and improving print quality. This gives this invention the advantages of avoiding toner accumulation, good stirring effect, and improved print quality. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the box body, drive unit, first transmission component and second transmission component of this utility model;

[0018] Figure 3 This is an exploded structural diagram of the present invention;

[0019] Figure 4This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 5 yes Figure 2 A magnified view of part A;

[0021] Figure 6 This is a three-dimensional structural schematic diagram of another embodiment of the stirring part of this utility model;

[0022] Figure 7 This is a schematic diagram of the internal structure of the box body of this utility model.

[0023] The attached figures are labeled as follows:

[0024] 1. Carton body; 2. Developing roller; 3. Drive unit; 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 unit; 13. Third transmission gear; 15. Protruding post; 16. Driven shaft; 17. Fixed boss; 18. Recessed post; 19. Power receiving unit; 20. First drive gear; 21. Second drive gear; 22. Powder feeding roller; 23. Powder feeding gear; 25. Developing gear; 26. Bottom shell; 27. Top cover; 28. First gear cover; 29. ​​Second gear cover.

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators in this utility model embodiment, such as up, down, left, right, front, back, clockwise, counterclockwise, etc., are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indicator will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0029] Example 1:

[0030] like Figures 1 to 5 As shown, in this embodiment, the present invention includes a housing 1, in which a developing roller 2, a driving unit 3, a first transmission assembly 5, and a second transmission assembly 6 are disposed. The driving unit 3 is connected to the first transmission assembly 5. The first transmission assembly 5 includes a plurality of first transmission gears 7 connected in sequence. The second transmission assembly 6 includes a plurality of second transmission gears 8 connected in sequence. 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 and the second bevel gear 10 are connected in a transmission manner. At least one of the second transmission gears 8 is connected to a stirring shaft 11. A stirring unit 12 is disposed 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.

[0031] It should be noted that 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. As long as the non-parallel state is satisfied, the embodiment is also within the scope of this utility model.

[0032] In contrast to the shortcomings of existing technologies, in this invention, when the developing cartridge is in normal working condition, the driving unit 3 is driven by the printing equipment, enabling the driving unit 3 to drive multiple first transmission gears 7 to rotate. Since the first bevel gear 9 and the second bevel gear 10 are connected by transmission, multiple second transmission gears 8 are driven to rotate, allowing the stirring shaft 11 to rotate, thereby driving the stirring unit 12 to stir the toner, thus stirring the toner in the toner hopper. Furthermore, since the first transmission component 5 and the second transmission component 6 are connected by the first bevel gear 9 and the second bevel gear 10, the rotation axis of the developing roller 2 is not parallel to the rotation axis of the stirring shaft 11. Therefore, this invention, by setting the rotation axis of the stirring shaft 11 to be non-parallel to the rotation axis of the developing roller 2, allows the stirring unit 12 to stir the toner more evenly, preventing toner from clumping and improving print quality. This gives this invention the advantages of avoiding toner accumulation, providing good stirring effect, and improving print quality.

[0033] like Figure 3 and Figure 4 As shown in the figure, in this embodiment, there are multiple stirring shafts 11, and the stirring part 12 is a stirring blade; the second transmission assembly 6 also includes multiple third transmission gears 13, which are tractively connected between multiple second transmission gears 8. Multiple protruding posts 15 are provided in the housing 1, and the multiple third transmission gears 13 are rotatably connected to the protruding posts 15 respectively; multiple concave posts 18 are provided in the housing 1, and the lower end of the stirring shaft 11 is connected to the corresponding concave post 18. Specifically, the number of stirring shafts 11 can be three as shown in the figure. In this case, the three stirring shafts 11 correspond to three second transmission gears 8, and the three second transmission gears 8 are tractively connected to each other through three third transmission gears 13. Furthermore, through the transmission of the second transmission gears 8 and the third transmission gears 13, the stirring shaft 11 can drive the stirring blade to stir the toner.

[0034] like Figure 5 As shown, in this embodiment, the driving unit 3 includes a power receiving unit 19, a first driving gear 20, and a second driving gear 21 coaxially connected. A powder feeding roller 22 is disposed in the housing 1, and 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 connected to the first driving gear 20, and the developing gear 25 is connected to the second driving gear 21. The power receiving unit 19 is a coupling, which connects to the printing equipment to receive power. Specifically, the printing equipment drives the power receiving unit 19 to further drive the powder feeding roller 22, the developing roller 2, and the first transmission assembly 5.

[0035] like Figure 3As shown, in this embodiment, the box body 1 includes a bottom shell 26 and a top cover 27. The top cover 27 covers the bottom shell 26. The first transmission component 5 and the second transmission component 6 are located on the side end of the bottom shell 26 and the top cover 27, respectively. A first gear cover 28 is provided on the top cover 27 and covers the second transmission component 6. A second gear cover 29 is provided on the side end of the bottom shell 26 and covers the first transmission component 5.

[0036] Example 2:

[0037] The difference between this embodiment and Embodiment 1 lies in the specific structure of the stirring section 12. Other identical structures will not be described again, and are as follows:

[0038] like Figure 6 and Figure 7 As shown, in this embodiment, the number of stirring shafts 11 can be multiple, and a driven shaft 16 is provided in the housing 1. The stirring part 12 is a stirring membrane that is drivenly 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, since the stirring membrane is drivenly connected to the stirring shaft 11 and the driven shaft 16, the driven shaft 16 can rotate simultaneously, thereby stirring the toner.

[0039] As can be seen from the above, 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 is less prone to clumping, thereby improving the printing quality.

[0040] In this embodiment, both the stirring shaft 11 and the driven shaft 16 are provided with fixing bosses 17 for fixing the stirring membrane; the housing 1 is provided with a plurality of recesses 18, and the lower ends of the stirring shaft 11 and the driven shaft 16 are connected to the corresponding recesses 18. Specifically, the stirring membrane is fixed by the fixing bosses 17, and the stirring membrane can be a perforated membrane or a non-perforated membrane to prevent the stirring shaft 11 and the driven shaft 16 from slipping when driving the stirring membrane to rotate; in addition, by connecting the lower ends of the stirring shaft 11 and the driven shaft 16 to the corresponding recesses 18, the stability during the stirring process is improved.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A developing cartridge, characterized in that: It includes a housing (1), in which a developing roller (2), a drive unit (3), a first transmission assembly (5), and a second transmission assembly (6) are disposed. The drive unit (3) is connected to the first transmission assembly (5). The first transmission assembly (5) includes a plurality of first transmission gears (7) connected in sequence. The second transmission assembly (6) includes a plurality of second transmission gears (8) connected in sequence. A first bevel gear (9) is connected to one of the first transmission gears (7). A second bevel gear (10) is connected to one of the second transmission gears (8). The first bevel gear (9) and the second bevel gear (10) are connected in sequence. At least one of the second transmission gears (8) is connected to a stirring shaft (11). A stirring unit (12) is disposed 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. A developing cartridge according to claim 1, characterized in that: The number of stirring shafts (11) is multiple, and the stirring part (12) is a stirring blade.

3. A developing cartridge according to claim 2, characterized in that: The second transmission assembly (6) also includes a plurality of third transmission gears (13), which are connected to the plurality of second transmission gears (8). The housing (1) is provided with a plurality of protrusions (15), and the plurality of third transmission gears (13) are rotatably connected to the plurality of protrusions (15).

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

5. A developing cartridge according to claim 1, characterized in that: The box body (1) is provided with a driven shaft (16), and the stirring part (12) is a stirring film that is connected to the stirring shaft (11) and the driven shaft (16).

6. A developing cartridge according to claim 5, characterized in that: Both the stirring shaft (11) and the driven shaft (16) are provided with fixing bosses (17) for fixing the stirring film.

7. A developing cartridge according to claim 5 or 6, characterized in that: 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 in the corresponding recessed columns (18).

8. A developing cartridge according to claim 1, characterized in that: The drive unit (3) includes a power receiving unit (19), a first drive gear (20), and a second drive gear (21) connected coaxially. A powder feeding roller (22) is provided in the housing (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 connected to the first drive gear (20). The developing gear (25) is connected to the second drive gear (21).

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

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