Photosensitive drum and developing device

Abstract

The utility model provides a photosensitive drum and a developing device, the photosensitive drum comprises a photosensitive drum body, a driving force end part and an electric input end part, specifically, the photosensitive drum body comprises a first end and a second end; the driving force end part comprises a first connecting end part and a force receiving fixed end part which are integrally formed and coaxially arranged, the first connecting end part is connected with the first end, and the force receiving fixed end part is connected with the printer power part; the electric input end part comprises a second connecting end part and a power transmission fixing end part which are coaxially arranged, the power transmission fixing end part penetrates through the second connecting end part, the second connecting end part is rotationally connected with the power transmission fixing end part, the second connecting end part is connected with the second end, and the power transmission fixing end part is electrically connected with a conductive part of the developing device. The photosensitive drum provided by the utility model is ingenious in structural arrangement, saves material cost, is energy-saving and environment-friendly, reduces parts, is convenient and labor-saving to assemble, is good in assembly stability, further improves the electric connection stability, and ensures the printing quality of the developing device.

Description

Technical Field

[0001] This utility model relates to the field of printing consumables technology, and in particular to a photosensitive drum and developing device. Background Technology

[0002] The developing unit is a printing consumable installed on a laser printer to enable printing. During the imaging process, the developer is supplied to the photosensitive drum by the developing roller to form an image. Subsequently, the transfer unit transfers the image onto the printing medium and fixes it by the fixing unit.

[0003] The photosensitive drum is one of the core components of the developing device. The existing photosensitive drum of the developing device includes a core shaft and a photosensitive body arranged coaxially. The core shaft runs through the entire photosensitive body and is fixedly connected to the photosensitive body. One end of the core shaft protrudes from the photosensitive body and is connected to a drive head that is connected to the printer drive unit. The other end also protrudes from the photosensitive body and is electrically connected to a conductive cover. Because the existing photosensitive drum has a through-structure core shaft and one end is connected to a drive head, the material cost is high and resources are wasted. Furthermore, the assembly of the photosensitive drum in the developing device is troublesome, laborious, and unstable. Moreover, the electrical connection between the other end of the through-structure core shaft and the conductive cover results in poor electrical connection stability, which may even cause the developing device to fail to print. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a photosensitive drum and a developing device. The photosensitive drum has an ingenious structure, saves material costs, is energy-saving and environmentally friendly, reduces the number of parts, is easy and labor-saving to assemble, has good assembly stability, and further improves the stability of electrical connection, thus ensuring the printing quality of the developing device.

[0005] This utility model provides a photosensitive drum, comprising: a photosensitive drum body, including a first end and a second end; and a driving force end, including an integrally formed and coaxially arranged first connecting end and a force receiving and fixing end, wherein the first connecting end is connected to the first end, and the force receiving and fixing end is connected to the printer power unit; and an electrical input end, including a coaxially arranged second connecting end and a power transmission and fixing end, wherein the power transmission and fixing end passes through the second connecting end, and the second connecting end and the power transmission and fixing end are rotatably connected, wherein the second connecting end is connected to the second end, and the power transmission and fixing end is electrically connected to the conductive part of the developing device.

[0006] In a preferred embodiment of this utility model, the force receiving and fixing end includes a first fixing part and a force receiving part that are integrally formed and coaxially arranged. The first fixing part is rotatably connected to the developing device, and the force receiving part is connected to the printer power unit.

[0007] In a preferred embodiment of this utility model, the power transmission fixing end includes a second fixing part, a power transmission part, and a third fixing part that are integrally formed and coaxially arranged. The second fixing part passes through the second connecting end and is rotatably connected to the second connecting end. The power transmission part is electrically connected to the conductive part of the developing device, and the third fixing part is fixedly connected to the developing device.

[0008] In a preferred embodiment of this invention, the power transmission fixing end further includes a first limiting part, which abuts against the conductive part of the developing device toward the second connecting end.

[0009] In a preferred embodiment of this utility model, the outer diameter of the first limiting part is greater than the outer diameter of the second fixing part, and the outer diameter of the third fixing part is greater than the outer diameter of the first limiting part.

[0010] In a preferred embodiment of this utility model, the power transmission fixing end further includes a second limiting part, which abuts against the developing device, and the outer diameter of the second limiting part is larger than the outer diameter of the third fixing part.

[0011] In a preferred embodiment of the present invention, the force receiving and fixing end further includes a third limiting part, and the first fixing part is sandwiched between the third limiting part and the force receiving part, and the third limiting part can abut against the developing device.

[0012] In a preferred embodiment of the present invention, the force receiving fixed end further includes a fourth limiting part, which is disposed between the third limiting part and the first connecting end, and the fourth limiting part can abut against the first end.

[0013] In a preferred embodiment of this utility model, the outer diameter of the fourth limiting part is greater than the outer diameter of the first connecting end, and the outer diameter of the third limiting part is greater than the outer diameter of the first fixing part.

[0014] This utility model also provides a developing device, which includes: a device body, a conductive part, and a photosensitive drum as described above, wherein the conductive part is disposed on one side of the device body, the photosensitive drum is rotatably mounted in the device body, the power transmission fixing end is electrically connected to the conductive part, and the force receiving fixing end is connected to the printer power unit.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] The photosensitive drum provided by this utility model has its driving force end and electrical input end connected to the first and second ends of the photosensitive drum body, respectively, which saves material costs and is energy-saving and environmentally friendly. The first connecting end and the force receiving and fixing end of the driving force end are integrally formed and coaxially arranged, reducing the number of parts in the driving force end. The force receiving and fixing end is directly connected to the printer's power unit. After the photosensitive drum body is fixedly connected to the first connecting end, it is driven by the printer to rotate. Furthermore, the second connecting end and the power supply fixing end of the electrical input end are rotatably connected. That is to say, after the photosensitive drum body is fixedly connected to the second connecting end, it rotates around the power supply fixing end as an axis. This not only makes assembly convenient and labor-saving, and improves assembly stability, but also enhances the stability of the electrical connection and ensures the printing quality of the developing device.

[0017] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the technical solutions of this invention. The objects and other advantages of this invention may be realized and obtained by means of the structures and / or processes particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the photosensitive drum provided in an embodiment of the present utility model;

[0019] Figure 2 A partially exploded view of the photosensitive drum provided in an embodiment of this utility model;

[0020] Figure 3 A partially exploded view of the photosensitive drum provided in an embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the developing apparatus provided in an embodiment of this utility model;

[0022] Figure 5 A schematic diagram of the developing apparatus provided in an embodiment of this utility model from another perspective;

[0023] Figure 6 This is a partially exploded view of the photosensitive drum being mounted on the developing device in an embodiment of this utility model.

[0024] Explanation of icon numbers:

[0025] 100-Photosensitive Drum;

[0026] 10-Photosensitive drum body, 11-First end, 12-Second end;

[0027] 20-Driving force end, 21-First connecting end, 22-Force receiving and fixing end, 221-First fixing part, 222-Force receiving part, 223-Third limiting part, 224-Fourth limiting part;

[0028] 30 - Electrical input end, 31 - Second connection end, 311 - Fifth limiting part, 32 - Power transmission fixing end, 321 - Second fixing part, 322 - Power transmission part, 323 - Third fixing part, 324 - First limiting part, 325 - Second limiting part;

[0029] 200 - Device body, 201 - Side cover, 202 - Chip cover;

[0030] 300 - Conductive part;

[0031] 1000 - Developing apparatus; Detailed Implementation

[0032] The following detailed description of the embodiments of this utility model, in conjunction with the accompanying drawings, will provide a thorough understanding of how this utility model uses technical means to solve technical problems and achieve technical effects, enabling its implementation. It should be noted that these specific descriptions are merely intended to facilitate a clearer understanding of this utility model by those skilled in the art, and are not intended to limit its scope. For example, the use of "first" and "second" in the embodiments of this utility model is not intended to limit its application, but merely to indicate the serial numbers of multiple identical or similar devices or mechanisms. Those skilled in the art can readjust these serial numbers for ease of description or during the organization of technical solutions. Furthermore, alternative solutions are described for some mechanisms in different embodiments, and these alternatives can be applied to other identical or similar devices or mechanisms. As long as there is no conflict, the various embodiments and features in each embodiment of this utility model can be combined with each other, and the resulting technical solutions are all within the protection scope of this utility model.

[0033] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments: Example

[0034] See Figures 1-3 This embodiment provides a photosensitive drum 100, which is installed in a developing apparatus 1000 for printing. The photosensitive drum 100 includes a photosensitive drum body 10, a driving force end 20, and an electrical input end 30, as detailed below:

[0035] The photosensitive drum body 10 includes a first end 11 and a second end 12 in its length direction, the first end 11 and the second end 12 being used to connect to the driving force end 20 and the electrical input end 30, respectively.

[0036] The driving force end 20 includes an integrally formed and coaxially arranged first connecting end 21 and force receiving and fixing end 22. The first connecting end 21 is connected to the first end 11 of the photosensitive drum body 10, and the force receiving and fixing end 22 is connected to the printer power unit and is used to receive the printer driving force to drive the photosensitive drum 100 to rotate.

[0037] The electrical input end 30 includes a second connecting end 31 and a power transmission fixing end 32 arranged coaxially. The power transmission fixing end 32 is fixedly connected in the developing apparatus 1000 and passes through the second connecting end 31. The second connecting end 31 is connected to the second end 12, and the second connecting end 31 and the power transmission fixing end 32 are rotatably connected. The power transmission fixing end 32 is electrically connected to the conductive part 300 of the developing apparatus 1000.

[0038] Using the photosensitive drum 100 provided in this embodiment, the driving force end 20 and the electrical input end 30 are respectively connected to the first end 11 and the second end 12 of the photosensitive drum body 10. This eliminates the need for a shaft core to penetrate the photosensitive drum body 10, saving material costs and promoting energy conservation and environmental protection. The first connecting end 21 and the force receiving and fixing end 22 of the driving force end 20 are integrally formed and coaxially arranged, reducing the number of components in the driving force end 20. The force receiving and fixing end 22 is directly connected to the printer's power unit. After the photosensitive drum body 10 is fixedly connected to the first connecting end 21, it is driven by the printer to rotate. Furthermore, the second connecting end 31 and the power supply fixing end 32 of the electrical input end 30 are rotatably connected. That is, after the photosensitive drum body 10 is fixedly connected to the second connecting end 31, it rotates around the power supply fixing end 32 as an axis. This not only makes assembly convenient and labor-saving, and improves assembly stability, but also enhances electrical connection stability, ensuring the printing quality of the developing device 1000.

[0039] In this embodiment, the force receiving fixed end 22 includes a first fixing part 221 and a force receiving part 222 that are integrally formed and coaxially arranged. The first fixing part 221 is rotatably connected to the developing device 1000, and the force receiving part 222 is used to connect to the printer power unit. As described above, the number of parts in the force receiving fixed end 22 is reduced, making assembly convenient, with high assembly accuracy and stability, and further ensuring the printing quality of the developing device 1000.

[0040] In this embodiment, the power supply fixing end 32 further includes an integrally formed and coaxially arranged second fixing part 321, power supply part 322 and third fixing part 323. The second fixing part 321 passes through the second connecting end 31 and is rotatably connected to the second connecting end 31. The power supply part 322 is electrically connected to the conductive part 300 of the developing device 1000. The third fixing part 323 is fixedly connected to the developing device 1000. As described above, the number of components in the power supply fixing end 32 is reduced and the electrical connection stability is improved, further ensuring the printing quality of the developing device 1000.

[0041] In this embodiment, preferably, the power transmission fixing end 32 further includes a first limiting part 324, which abuts against the conductive part 300 of the developing device 1000 toward the second connecting end 31. The second connecting end 31 is provided with a fifth limiting part 311 protruding toward the power transmission fixing end 32. As configured above, in the length direction of the photosensitive drum body 10, the first limiting part 324 and the second connecting end 31 clamp the conductive part 300, ensuring the stability of the electrical connection between the power transmission part 322 and the conductive part 300, and preventing the electrical connection from loosening or even detaching.

[0042] Furthermore, the outer diameter of the first limiting part 324 is larger than the outer diameter of the second fixing part 321, and the outer diameter of the third fixing part 323 is larger than the outer diameter of the first limiting part 324. That is to say, the outer diameter of the second fixing part 321 is the smallest, which makes it easy for it to pass through the second connecting end 31 and rotate. The outer diameter of the third fixing part 323 is larger than the outer diameter of the first limiting part 324, which makes the third fixing part 323 stably connected to the developing device 1000 and ensures that the first limiting part 324 and the second connecting end 31 clamp the conductive part 300, and the power transmission part 322 is stably electrically connected to the conductive part 300.

[0043] More preferably, the power transmission fixing end 32 further includes a second limiting part 325, which abuts against the developing device 1000. That is, the second limiting part 325 is clamped by one side end of the device body 200 and the chip cover 202, and the outer diameter of the second limiting part 325 is larger than the outer diameter of the third fixing part 323. In other words, the outer diameter of the second limiting part 325 is the largest. As set up as above, the power transmission fixing end 32 is stably fixed in the developing device 1000. In this way, after the photosensitive drum body 10 is fixedly connected to the second connecting end 31, it rotates around the power transmission fixing end 32 as the axis, and the rotation operation is stable. The power transmission part 322 and the conductive part 300 are electrically connected stably.

[0044] In this embodiment, the force receiving and fixing end 22 further includes a third limiting part 223, and the first fixing part 221 is sandwiched between the third limiting part 223 and the force receiving part 222. In the length direction of the photosensitive drum body 10, the third limiting part 223 can abut against the developing device 1000. Since when the photosensitive drum 100 is assembled in the developing device 1000, the driving force end 20 is first installed into the device body 200, and then the power transmission fixing end 32 is assembled, the third limiting part 223 abuts against the device body 200 of the developing device 1000, which is conducive to the accurate installation of the photosensitive drum 100 in the developing device 1000, and avoids loosening due to over-installation or incomplete installation.

[0045] Furthermore, the force receiving fixed end 22 also includes a fourth limiting part 224, which is disposed between the third limiting part 223 and the first connecting end 21. The fourth limiting part 224 can abut against the first end 11. With the above configuration, when assembling the photosensitive drum 100 itself, it is beneficial for the driving force end 20 to be accurately assembled in the first end 11 of the photosensitive drum body 10.

[0046] Furthermore, the outer diameter of the fourth limiting part 224 is larger than the outer diameter of the first connecting end 21, and the outer diameter of the third limiting part 223 is larger than the outer diameter of the first fixing part 221. In other words, the outer diameter of the first fixing part 221 is the smallest, which makes the first fixing part 221 rotate smoothly with the developing device 1000. At the same time, it ensures that the fourth limiting part 224 and the third limiting part 223 achieve the effect of precise assembly of the photosensitive drum 100 itself and precise assembly of the photosensitive drum 100 in the developing device 1000.

[0047] See Figures 4-6 This embodiment also provides a developing apparatus 1000, which includes a photosensitive drum 100, an apparatus body 200, and a conductive part 300 as described above. Specifically, the conductive part 300 is disposed on one side of the apparatus body 200, and a side cover 201 is installed on the side, followed by a chip cover 202. The photosensitive drum 100 is rotatably installed in the apparatus body 200. One end of the power transmission fixing end 32 is fixed in the side cover 201 and electrically connected to the conductive part 300. The conductive part 300 can be a steel sheet with an annular hole. The outer end face of the power transmission fixing end 32 is abutted and fixed by the chip cover 202, and the other end of the force receiving fixing end 22 is connected to the printer power unit.

[0048] The developing device 1000 with the aforementioned photosensitive drum 100 installed not only saves material costs and is energy-saving and environmentally friendly, but also reduces the number of parts, making assembly convenient, labor-saving, and with good assembly stability. Furthermore, it improves the stability of electrical connections and ensures the printing quality of the developing device 1000.

[0049] Finally, it should be noted that the above description is merely the preferred embodiment of this utility model and is not intended to limit the utility model in any way. Any person skilled in the art can make many possible changes and simple substitutions to the technical solution of this utility model using the disclosed methods and technical content without departing from the scope of the technical solution of this utility model, and these all fall within the protection scope of the technical solution of this utility model.

Claims

1. A photosensitive drum, characterized in that, include: The photosensitive drum body includes a first end and a second end; as well as, The driving force end includes an integrally formed and coaxially arranged first connecting end and a force receiving and fixing end, wherein the first connecting end is connected to the first end, and the force receiving and fixing end is connected to the printer power unit; The electrical input end includes a second connecting end and a power transmission fixing end arranged coaxially, and the power transmission fixing end passes through the second connecting end. The second connecting end and the power transmission fixing end are rotatably connected. The second connecting end is connected to the second end, and the power transmission fixing end is electrically connected to the conductive part of the developing device.

2. The photosensitive drum according to claim 1, characterized in that, The force receiving and fixing end includes an integrally formed and coaxially arranged first fixing part and force receiving part. The first fixing part is rotatably connected to the developing device, and the force receiving part is connected to the printer power unit.

3. The photosensitive drum according to claim 2, characterized in that, The power transmission fixed end includes a second fixed part, a power transmission part and a third fixed part that are integrally formed and coaxially arranged. The second fixed part passes through the second connecting end and is rotatably connected to the second connecting end. The power transmission part is electrically connected to the conductive part of the developing device, and the third fixed part is fixedly connected to the developing device.

4. The photosensitive drum according to claim 3, characterized in that, The power transmission fixed end also includes a first limiting part, which abuts against the conductive part of the developing device toward the second connecting end.

5. The photosensitive drum according to claim 4, characterized in that, The outer diameter of the first limiting part is greater than the outer diameter of the second fixing part, and the outer diameter of the third fixing part is greater than the outer diameter of the first limiting part.

6. The photosensitive drum according to claim 5, characterized in that, The power transmission fixed end also includes a second limiting part, which abuts against the developing device, and the outer diameter of the second limiting part is larger than the outer diameter of the third fixing part.

7. The photosensitive drum according to any one of claims 2-6, characterized in that, The force receiving and fixing end also includes a third limiting part, and the first fixing part is sandwiched between the third limiting part and the force receiving part. The third limiting part can abut against the developing device.

8. The photosensitive drum according to claim 7, characterized in that, The force receiving fixed end also includes a fourth limiting part, which is disposed between the third limiting part and the first connecting end, and the fourth limiting part can abut against the first end.

9. The photosensitive drum according to claim 8, characterized in that, The outer diameter of the fourth limiting part is greater than the outer diameter of the first connecting end, and the outer diameter of the third limiting part is greater than the outer diameter of the first fixing part.

10. A developing apparatus, characterized in that, include: The device body, the conductive part, and the photosensitive drum as described in any one of claims 1-9, wherein the conductive part is disposed on one side of the device body, the photosensitive drum is rotatably mounted in the device body, the power transmission fixing end is electrically connected to the conductive part, and the force receiving fixing end is connected to the printer power unit.

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