Support, developing unit and processing box
The development unit with a bracket with an inclined guide inclined surface and a cantilever-type contact part solved the problem of poor electrical contact caused by high mounting accuracy of the conductive sheet, and achieved stable operation of the development unit.
Patent Information
- Application Number
- CN202421445418.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In the developing units of the existing electrophotographic imaging equipment, the installation accuracy of the conductive sheet is high, which can easily lead to poor electrical contact between the powder output knife and the conductive sheet, resulting in the development unit being unable to operate normally.
A bracket with an inclined guide inclined surface is designed, and a cantilever-shaped contact part is provided on the bracket, and the contact part is in close contact with the powder output knife through the guide inclined surface and elastic deformation, thereby stably supplying electricity.
The electrical contact stability between the powder output knife and the contact part is improved, the installation difficulty is reduced, and the problem that the developing unit cannot operate normally due to poor electrical contact is avoided.
Smart Images
Figure CN222690059U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic photographic imaging, in particular to a bracket used for electronic photographic imaging equipment, a developing unit with the bracket and a processing box with the developing unit. Background Art
[0002] A processing box is an essential component of an electronic photographic imaging device (hereinafter referred to as the "device"). There is currently a processing box that can be detachably installed in the device, including a developing unit for accommodating toner and a photosensitive unit for accommodating waste toner, the photosensitive unit including a photosensitive housing and a photosensitive drum rotatably arranged in the photosensitive housing, the developing unit including a developing housing and a developing roller rotatably arranged in the developing housing, the rotation axis of the developing roller extending in the longitudinal direction, the developing roller being used to carry toner and supply the toner to the photosensitive drum, thereby developing the electrostatic latent image on the photosensitive drum, the developing unit also including a powder discharge knife fixedly arranged on the developing housing, the powder discharge knife being used to adjust the thickness of the toner layer on the surface of the developing roller, and a bracket being provided at one end of the developing unit, the bracket being used to support the developing roller and supply power to the powder discharge knife.
[0003] In the prior art, a conductive sheet for electrically contacting the powder discharge knife is usually provided on the bracket. One side of the conductive sheet is electrically contacted with the power output part in the equipment, and the other side is electrically contacted with the powder discharge knife. Therefore, the installation accuracy of the conductive sheet is required to be high, which can easily lead to poor electrical contact between the powder discharge knife and the conductive sheet, thereby causing the developing unit to fail to work normally. Utility Model Content
[0004] In view of this, the utility model provides a bracket adopting the following solution, a developing unit having the bracket, and a processing box having the developing unit, so as to avoid the developing unit from not being able to work normally.
[0005] In order to achieve the above purpose, the utility model specifically adopts the following technical solutions:
[0006] The bracket is detachably connected to one end of a developing unit, and the developing unit comprises: a developing shell for accommodating carbon powder; a developing roller rotatably arranged in the developing shell for supplying carbon powder to a photosensitive drum outside the developing unit, and the extension direction of the rotation axis of the developing roller is a first direction; a powder discharge knife fixedly arranged on the developing shell for adjusting the thickness of the carbon powder layer on the surface of the developing roller; the bracket is used to directly or indirectly supply power to the powder discharge knife; it is characterized in that the bracket comprises: a bracket main body for being fixedly connected to the developing shell; a contact portion formed on the bracket main body for abutting against the powder discharge knife, the contact portion having a guiding inclined surface inclined relative to the first direction, and when the bracket is mounted to the developing shell, the guiding inclined surface faces at least a part of the powder discharge knife.
[0007] Furthermore, the contact portion is a cantilever with elastic deformation, and under the action of its own elasticity, the contact portion is in close contact with the powder discharge knife.
[0008] Further, along the inclination direction of the guiding inclined surface, the guiding inclined surface has a lowest end and a highest end that are arranged opposite to each other, and along the installation direction of the bracket toward the developing housing, the lowest end is located downstream of the highest end.
[0009] Furthermore, the developing unit is also provided with a powder outlet for allowing the carbon powder in the developing housing to flow out to be supplied to the developing roller and a sealing strip for sealing the powder outlet, the powder outlet extending along a first direction and opposite to the developing roller; the developing housing is also provided with a through hole, along the first direction, the through hole is located at one end of the powder outlet, and a portion of the sealing strip is exposed to the outside of the developing unit through the through hole; along the arrangement direction of the developing roller and the powder outlet, the through hole has a first end and a second end opposite to each other; observing the developing unit along the first direction, a first straight line U1 and a second straight line U2 extend through both ends of the through hole respectively, the first straight line U1 and the second straight line U2 are parallel to each other, and extend along a direction parallel to the arrangement direction of the powder outlet and the developing roller; the bracket has an overlapping area between the first straight line U1 and the second straight line U2, and along the arrangement direction of the developing roller and the powder outlet, the overlapping area is all located on the side of the second end facing the developing roller.
[0010] Further, when observing the developing unit along the first direction, the overlapping area covers the first end.
[0011] Furthermore, the brackets are all made of conductive materials.
[0012] Furthermore, the contact part is made of conductive material, and the part of the bracket other than the contact part is made of non-conductive material. The developing unit also has a first conductive member arranged on the bracket, one end of the first conductive member is used to electrically contact the power output part in the device, and the other end is used to electrically contact the contact part.
[0013] The utility model also provides a developing unit, comprising a developing shell and the above-mentioned bracket, wherein the bracket is detachably connected to one end of the developing shell.
[0014] The utility model also provides a processing box, comprising a photosensitive unit and the developing unit as described above, wherein the photosensitive unit and the developing unit are combined with each other, and a photosensitive drum is arranged in the photosensitive unit. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional diagram of the processing box involved in the utility model.
[0016] Figure 2 It is a stereoscopic diagram of a developing unit in a processing box involved in the utility model.
[0017] Figure 3 It is a stereoscopic diagram of a bracket of a developing unit in a processing box involved in the utility model.
[0018] Figure 4 The utility model is an exploded view of a developing unit support and a developing shell after being separated.
[0019] Figure 5 It is a side view of the developing unit in the processing box of the utility model observed along the first direction. DETAILED DESCRIPTION
[0020] The following further describes in detail the structure and other aspects of the bracket, the developing unit with the bracket, and the processing box with the developing unit involved in the present invention through specific implementations and with reference to the accompanying drawings.
[0021] like Figure 1 As shown, the processing box 100 can be detachably installed in an electronic photographic imaging device (hereinafter referred to as the "device"), including a developing unit 1 and a photosensitive unit 2 that are combined with each other, the photosensitive unit 2 has a photosensitive housing 20 for accommodating waste powder and a photosensitive drum 21 rotatably arranged in the photosensitive housing 20, the developing unit 1 has a developing housing 10 for accommodating carbon powder and a developing roller 11 rotatably arranged in the developing housing 10, the developing roller 11 is used to carry carbon powder and supply carbon powder to the photosensitive drum 21 to develop the electrostatic latent image on the surface of the photosensitive drum 21, and the developing unit 1 also has a powder discharge knife 12 fixedly arranged on the developing housing 10, and the powder discharge knife 12 is used to adjust the thickness of the carbon powder layer on the surface of the developing roller 11.
[0022] To make the following description clearer, Figure 1 and Figure 2 As shown, the extension direction of the rotation axis L of the developing roller 11 is defined as a first direction / left-right direction; along the first direction, the processing box 100 includes a developing coupling component 41 and / or a photosensitive coupling component 42 arranged at one end, and at least one of the developing coupling component 41 and the photosensitive coupling component 42 is used to receive the rotational driving force output by the device, thereby directly or indirectly driving the developing roller 11 and the photosensitive drum 21 and other rotating parts to rotate. In this embodiment, along the first direction, the developing coupling component 41 and the photosensitive coupling component 42 are located at the same end of the processing box 100, and the end where the developing coupling component 41 and the photosensitive coupling component 42 are located is defined as the driving end / left, and the end opposite to the driving end is the non-driving end / right.
[0023] like Figure 2 and Figure 3 As shown, the developing unit 1 further has a bracket 30 detachably connected to one end of the developing housing 10 , and the bracket 30 is used to directly or indirectly supply power to the powder discharging knife 12 .
[0024] The bracket 30 has a bracket body 31 and a contact portion 311 extending from the bracket body 31, wherein the contact portion 311 is used to abut against the powder discharge knife 12 and to stably supply power to the powder discharge knife 12. Specifically, in the utility model, the contact portion 311 is arranged as a cantilever, and when the contact portion 311 is squeezed along a direction intersecting with the first direction, it can be elastically deformed, so that the contact portion 311 is in close contact with the powder discharge knife 12 under the action of its own elasticity, and the contact portion 311 is also provided with a guide bevel 312 inclined relative to the first direction, and when the bracket 30 is mounted to the developing housing 10, the guide bevel 312 faces at least a portion of the powder discharge knife 12.
[0025] During production using an automated production line, it is necessary to first install the powder knife 12, then install the developing roller 11, and finally install the bracket 30 to the developing housing 10 along a first direction. Even if the powder knife 12 interferes with the contact portion 311, when the guide bevel 312 is provided, the bracket 30 can be smoothly installed to the developing housing 10 through the guide bevel 312; along the first direction, during installation of the bracket 30 to the developing housing 10, the powder knife 12 overlaps with a portion of the guide bevel 312.
[0026] Along the inclination direction of the guide slope 312, the guide slope 312 has a relatively set lowest end 312a and a highest end 312b, and along the installation direction of the bracket 30 toward the developing housing 10, the lowest end 312a is located downstream of the highest end 312b; in the process of installing the bracket 30 to the developing housing 10, the powder knife 12 first contacts the lowest end 312a or the area between the lowest end 312a and the highest end 312b, and as the bracket 30 is installed, the contact position of the powder knife 12 and the contact portion 311 gradually approaches the highest end 312b, and the powder knife 12 gradually presses against the contact portion 311; in this embodiment, the bracket 30 is entirely made of conductive material.
[0027] In some embodiments, the contact portion 311 is made of a conductive material, and the portion of the bracket 30 other than the contact portion 311 is made of a non-conductive material. In this case, the developing unit 1 further has a first conductive member arranged on the bracket 30, one end of the first conductive member is used to electrically contact the power output part in the device, and the other end is electrically contacted with the contact portion 311; preferably, the first conductive member is a conductive steel sheet.
[0028] like Figure 3 and Figure 4As shown, the bracket 30 can also be used to support the developing roller 11 and directly or indirectly supply electricity to the developing roller 11. The bracket 30 also has a supporting portion 313 formed on the bracket body 31, and the supporting portion 313 extends along the first direction and is used to contact the developing roller 11. In this embodiment, the bracket 30 is entirely made of conductive material.
[0029] In some embodiments, the support portion 313 is made of a conductive material, and the portion of the bracket 30 other than the support portion 313 and the contact portion 312 is made of a non-conductive material. In this case, the developing unit 1 further has a second conductive member arranged on the bracket 30, one end of the second conductive member is used to electrically contact the power output portion in the device, and the other end is electrically contacted with the support portion 313; preferably, the second conductive member is a conductive steel sheet.
[0030] like Figure 4 and Figure 5 As shown, the developing unit 1 is also provided with a powder outlet (not shown) for allowing the carbon powder in the developing housing 10 to flow out to be supplied to the developing roller 11, and a sealing strip (not shown) for sealing the powder outlet, and the powder outlet extends along a first direction and is opposite to the developing roller 11; the developing housing 10 is also provided with a through hole 13 for exposing a part of the sealing strip to the outside of the developing housing 10, and along the first direction, the through hole 13 is arranged at one end of the powder outlet, so that the operator can pull out the sealing strip, thereby opening the powder outlet, so that the carbon powder in the developing housing 10 can be smoothly supplied to the developing roller 11.
[0031] like Figure 4 As shown, observing the developing unit 1 along the first direction, a first straight line U1 and a second straight line U2 are respectively extended through the two ends of the through hole 13, the first straight line U1 and the second straight line U2 are parallel to each other, and extend along a direction parallel to the arrangement direction of the developing roller 11 and the powder outlet; the bracket 30 also has an overlapping area 32 formed on the bracket body 31 and located between the first straight line U1 and the second straight line U2, and the overlapping area 32 is entirely located on one side of at least a portion of the through hole 13, along the arrangement direction of the developing roller 11 and the powder outlet, the through hole 13 has a first end 13a and a second end 13b that are relatively arranged, wherein the first end 13a is closer to the developing roller 11 than the second end 13b, and along the arrangement direction of the developing roller 11 and the powder outlet, the overlapping area 32 is entirely located on one side of the second end 13b, that is, the overlapping area 32 is entirely located on the side of the second end 13b facing the developing roller 11.
[0032] In some embodiments, when the developing unit 1 is viewed along the first direction, the overlapping area 32 covers the first end 13 a .
[0033] This solution ensures that the sealing strip does not need to pass through the bracket 30 during the process of installing the bracket 30 to the developing housing 10 , which can reduce the difficulty of installation and avoid interference between the bracket 30 and the sealing strip.
[0034] Based on the inventive concept of the present invention, the developing unit 1 involved in the present invention can be independently formed into a developing box, or can be integrally provided with the above-mentioned photosensitive unit 2. That is to say, the above-mentioned processing box 100 can include both the developing unit 1 and the photosensitive unit 2 at the same time, or can only include the developing unit 1.
[0035] As described above, in the processing box 100 involved in the utility model, by providing a cantilevered contact portion 311 on the bracket 30, it can maintain close contact with the powder discharge knife 12 after being installed in the developing housing 10, thereby stably supplying power to the powder discharge knife 12.
Claims
1. A bracket, detachably connected to one end of a developing unit, wherein the developing unit comprises: A developing housing, used for containing toner; A developing roller is rotatably disposed in a developing housing and is used to supply carbon powder to a photosensitive drum outside the developing unit, wherein a rotation axis of the developing roller extends in a first direction; A powder discharge knife is fixedly arranged on the developing housing and is used to adjust the thickness of the carbon powder layer on the surface of the developing roller; The bracket is used to directly or indirectly supply power to the powder discharging knife; it is characterized in that: A bracket having: The support body is used for fixed connection with the developing housing; The contact portion is formed on the bracket body and is used to abut against the powder discharge knife. The contact portion has a guide slope inclined relative to the first direction. When the bracket is installed to the developing housing, the guide slope faces at least a part of the powder discharge knife.
2. The bracket according to claim 1, characterized in that: The contact part is a cantilever with elastic deformation, and under the action of its own elasticity, the contact part is in close contact with the powder discharging knife.
3. The bracket according to claim 1, characterized in that: Along the inclination direction of the guiding inclined surface, the guiding inclined surface has a lowest end and a highest end which are arranged opposite to each other, and along the installation direction of the bracket toward the developing housing, the lowest end is located downstream of the highest end.
4. The bracket according to claim 1, characterized in that: The developing unit is further provided with a powder outlet for allowing the toner in the developing housing to flow out to be supplied to the developing roller and a sealing strip for sealing the powder outlet, wherein the powder outlet extends along a first direction and is opposite to the developing roller; the developing housing is further provided with a through hole, wherein the through hole is located at one end of the powder outlet along the first direction, and a portion of the sealing strip is exposed to the outside of the developing unit through the through hole; Along the arrangement direction of the developing roller and the powder outlet, the through hole has a first end and a second end opposite to each other; When observing the developing unit along the first direction, a first straight line U1 and a second straight line U2 extend through both ends of the through hole, respectively. The first straight line U1 and the second straight line U2 are parallel to each other and extend in a direction parallel to the arrangement direction of the powder outlet and the developing roller. The bracket has an overlapping area between the first straight line U1 and the second straight line U2. Along the arrangement direction of the developing roller and the powder outlet, the overlapping area is entirely located on the side of the second end facing the developing roller.
5. The bracket according to claim 4, characterized in that: When the developing unit is viewed along the first direction, the overlapping area covers the first end.
6. The bracket according to any one of claims 1 to 5, characterized in that: The brackets are all made of conductive materials.
7. The bracket according to any one of claims 1 to 5, characterized in that: The contact part is made of conductive material, and the part of the bracket other than the contact part is made of non-conductive material. The developing unit also has a first conductive member arranged on the bracket, one end of the first conductive member is used to electrically contact the power output part in the device, and the other end is electrically in contact with the contact part.
8. A developing unit, characterized in that The developing unit comprises a developing housing and a bracket according to any one of claims 1 to 7, wherein the bracket is detachably connected to one end of the developing housing.
9. A process cartridge, characterized in that: The process cartridge includes a photosensitive unit and a developing unit as claimed in claim 8, the photosensitive unit and the developing unit are combined with each other, and a photosensitive drum is disposed in the photosensitive unit.