Conducting strip mounting structure and processing box

Abstract

The utility model discloses a conducting strip mounting structure and a processing box applying the same, and the conducting strip mounting structure comprises a device housing which is internally provided with an electric device; the end cover is buckled at the end part of the device shell, and an accommodating space is formed between the end cover and the device shell; the conducting strip is located in the containing space and provided with a first connecting end and a second connecting end, the first connecting end is electrically connected with an electric device in the device shell, and the side, facing the end cover, of the second connecting end is exposed out of the end cover through a notch in the end cover and used for being connected with an external terminal; a supporting piece is arranged on the device shell and extends towards the second connecting end of the conducting strip, and the supporting piece abuts against the conducting strip on the inner side of the second connecting end so that the conducting strip can be prevented from being inwards sunken and deformed under extrusion of the external terminal. The supporting piece extending from the device shell abuts against the second connecting end of the conducting strip, so that the conducting strip is effectively prevented from deforming inwards due to extrusion of an external terminal, the problem that an existing conducting strip supporting structure is prone to failure and poor contact is caused is solved, and the electric connection stability under long-term use is ensured.

Description

Technical Field

[0001] This application relates to the field of processing box technology, and in particular to a conductive sheet mounting structure and a processing box using the same. Background Technology

[0002] In a laser printer, binary data from a computer is converted into a video signal by a video controller, then into a laser drive signal by a video interface / control system. A laser scanning system generates a laser beam carrying character information, and finally, an electrophotographic system images the laser beam and transfers it onto a recording medium (such as paper). The laser imaging technology charges the surface of the toner cartridge (made of non-metallic photosensitive material selenium) through charging electrodes, giving it a certain potential. Exposure to the laser beam forms an electrostatic latent image, which is then developed into a toner image by a magnetic brush developer. This image is then transferred to paper under the action of transfer electrodes, and finally, the text and images are fixed by a preheating plate and a high-temperature hot roller. Since most components (such as the toner cartridge, charging roller, toner blade, and developing roller) operate under electrical conditions, conductive sheets are needed to guide the power flow to these components. Existing conductive sheets are typically made of deformable metal, and their positioning is achieved through a deformable support portion and a positioning portion on the side cover of the processing cartridge. However, when the contact terminals of the laser printer are in contact with the conductive sheet for a long time or the conductive sheet is too long, the supporting part of the conductive sheet will deform significantly and be pushed into the processing box by the contact terminals, causing poor contact and affecting the electrical connection between the component and the laser printer. Utility Model Content

[0003] The purpose of this application is to provide a conductive sheet mounting structure and processing box, which has the advantages of preventing poor contact caused by conductive sheet deformation and ensuring the stability of electrical connection.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] On the one hand, a conductive sheet mounting structure is provided, comprising:

[0006] The device housing contains electrical components.

[0007] An end cap is fastened to the end of the device housing, forming a receiving space between the end cap and the device housing;

[0008] A conductive sheet, located in the receiving space, has a first connection end and a second connection end. The first connection end is electrically connected to an electrical component inside the device housing. The second connection end is exposed outside the end cover through a notch on the end cover on the side facing the end cover, for connecting to an external terminal.

[0009] A support member is provided on the housing of the device extending toward the second connection end of the conductive sheet. The support member abuts against the conductive sheet on the inner side of the second connection end to prevent the conductive sheet from being deformed inward under the pressure of the external terminal.

[0010] Optionally, the second connection end is formed with a rectangular plate-shaped terminal contact block, and the support member abuts against the middle of the terminal contact block.

[0011] Optionally, the support member has a columnar structure with a cross-sectional area smaller than that of the terminal contact block.

[0012] Optionally, there are multiple conductive sheets, and the number of support members corresponds one-to-one with the number and position of the conductive sheets.

[0013] Optionally, the conductive sheet includes a developing roller conductive sheet, a powder feeding roller conductive sheet, and a powder discharging blade conductive sheet, and the support member includes a first positioning post for supporting the developing roller conductive sheet, a second positioning post for supporting the powder feeding roller conductive sheet, and a third positioning post for supporting the powder discharging blade conductive sheet;

[0014] In the vertical direction, the first positioning post, the second positioning post, and the third positioning post are arranged sequentially from low to high;

[0015] In the horizontal direction, the second positioning post is located between the first positioning post and the third positioning post. The first positioning post is close to the axis of the developing roller, and the third positioning post is close to the handle of the device housing.

[0016] Optionally, adjacent support members are connected by reinforcing ribs, or all support members are connected in pairs by reinforcing ribs.

[0017] Optionally, the end cap is provided with a conductive sheet mounting groove capable of accommodating the terminal contact block, the notch is formed in the conductive sheet mounting groove, and the terminal contact block is embedded in the conductive sheet mounting groove.

[0018] Optionally, the periphery of the terminal contact block is folded towards the device housing to form an elastic support piece, and the terminal contact block is engaged in the conductive sheet mounting groove by the elastic support piece.

[0019] Optionally, the portion of the conductive sheet mounting groove near the device housing protrudes inward to form a support platform, and the end of the elastic support sheet away from the terminal contact block abuts against the support platform.

[0020] Optionally, the first connecting end of the conductive sheet extends into the device housing and is electrically connected to the electrical device, or the portion extending into the accommodating space through the electrical device is electrically connected to the electrical device.

[0021] On the other hand, a processing box is provided having a plurality of electrical components, the electrical components including a developing roller, an air supply roller and a powder discharge blade, wherein the developing roller, the air supply roller and the powder discharge blade are all connected to a conductive sheet mounted to the conductive sheet mounting structure described above.

[0022] The beneficial effects of this application are as follows: the support extending from the device housing abuts against the second connection end of the conductive sheet, effectively preventing the conductive sheet from deforming inward due to external terminal pressure, solving the problem of poor contact caused by easy failure of the existing conductive sheet support structure, and having the advantage of ensuring the stability of electrical connection under long-term use. Attached Figure Description

[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a three-dimensional structural diagram of the conductive sheet mounting structure described in the embodiments of this application, showing its installation state.

[0025] Figure 2 This is an exploded view of the conductive sheet mounting structure described in the embodiments of this application;

[0026] Figure 3 This is another perspective view of the exploded state of the conductive sheet mounting structure described in the embodiments of this application;

[0027] Figure 4 for Figure 3 Enlarged view of a section at point I;

[0028] Figure 5 This is another perspective view of the exploded state of the conductive sheet mounting structure described in the embodiments of this application;

[0029] Figure 6 This is another perspective view of the exploded state of the conductive sheet mounting structure described in the embodiments of this application;

[0030] Figure 7 For this Figure 6 Enlarged view of section II in the middle;

[0031] Figure 8 This is an exploded view of the conductive sheet and end cap described in the embodiments of this application;

[0032] Figure 9 This is another exploded view of the conductive sheet and end cap described in the embodiments of this application;

[0033] Figure 10 This is a schematic diagram of the conductive sheet structure described in the embodiments of this application;

[0034] Figure 11 This is a schematic diagram of the end cap structure described in an embodiment of this application;

[0035] Figure 12 This is a schematic diagram of the assembly state of the conductive sheet and end cap as described in the embodiments of this application;

[0036] Figure 13 This is a cross-sectional view of the conductive sheet mounting structure described in the embodiments of this application;

[0037] Figure 14 for Figure 13 Enlarged view of a section in area III;

[0038] Figure 15 This is a side view of the conductive sheet mounting structure described in an embodiment of this application (with the side cover removed);

[0039] Figure 16 This is an exploded view of the powder discharge blade connector and the device housing as described in the embodiments of this application;

[0040] Figure 17 for Figure 16 Enlarged view of section IV in the middle;

[0041] Figure 18 This is a schematic diagram of the powder discharge blade connector described in an embodiment of this application.

[0042] In the picture:

[0043] 100. Device housing; 110. Electrical components; 200. End cap; 210. Conductive sheet mounting groove; 220. Notch; 230. Support platform; 300. Conductive sheet; 301. Conductive sheet of developing roller; 302. Conductive sheet of powder feeding roller; 303. Conductive sheet of powder discharge blade; 310. First connecting end; 320. Second connecting end; 321. Terminal contact block; 322. Elastic support sheet; 400. Support member; 401. First positioning post; 402. Second positioning post; 403. Third positioning post; 410. Reinforcing rib; 500. Handle; 600. Powder discharge blade connector; 610. First connecting part; 620. Second connecting part; 700. Fixing groove; 710. First groove body; 720. Second groove body. Detailed Implementation

[0044] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0048] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0049] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0050] In existing technology, the electrical connections of the internal components of a laser printer are achieved through conductive sheets. These conductive sheets are typically made of deformable metal and engage with the side cover positioning structure through their own deformation. When the contact terminals are subjected to prolonged pressure or the conductive sheet is long, the deformed area is prone to irreversible indentation, causing the conductive sheet to shift inwards, resulting in poor contact and affecting the power supply stability of critical components such as the developing roller and toner blade.

[0051] To solve the above problems, such as Figure 1-18 As shown, this application provides a conductive sheet mounting structure, including:

[0052] The device housing 100 has an electrical component 110 installed inside;

[0053] An end cap 200 is fastened to the end of the device housing 100, forming a receiving space between the end cap and the device housing 100;

[0054] A conductive sheet 300, located in the accommodating space, has a first connecting end 310 and a second connecting end 320. The first connecting end 310 is electrically connected to an electrical component 110 inside the device housing 100. The second connecting end 320 is exposed outside the end cover 200 through a notch 220 on the end cover 200 on the side facing the end cover 200, for connecting to an external terminal.

[0055] A support member 400 is provided on the housing 100 of the device extending toward the second connection end 320 of the conductive sheet 300. The support member 400 abuts against the conductive sheet 300 on the inner side of the second connection end 320 to prevent the conductive sheet 300 from being deformed inward under the pressure of the external terminal.

[0056] The second connecting end 320 of the conductive sheet 300 extends outward to the notch 220 of the end cap 200, forming an interface for contact with an external terminal. When the external terminal is inserted into the notch 220 and presses against the conductive sheet 300, the support member 400 provides a reverse support force inside the conductive sheet 300. This support force balances the terminal pressure, preventing the conductive sheet 300 from concave inward. The position of the support member 400 is set directly opposite the stress area of ​​the conductive sheet 300 to ensure that the support force is effectively transmitted to the deformation area.

[0057] Compared to existing technologies, the existing conductive sheet 300 relies solely on its own rigidity to resist external forces without any auxiliary support structure. This solution incorporates a support member 400 on the device housing 100, forming a passive rigid support system. When the conductive sheet 300 is subjected to external pressure, the support member 400 immediately provides a reaction force, preventing the accumulation of plastic deformation. This dual support mechanism significantly improves the structural stability of the contact interface.

[0058] Through the above technical solution, this application effectively prevents irreversible deformation of the conductive sheet 300 during long-term use, ensuring a stable electrical connection between the contact terminal and the conductive sheet 300. The support member 400 significantly improves the compressive strength of the conductive sheet 300, extends the service life of the printer's internal electrical components, and reduces print quality degradation caused by poor contact.

[0059] Reference Figure 7 As shown, the second connection end 320 is formed with a rectangular plate-shaped terminal contact block 321, and the support member 400 abuts against the middle of the terminal contact block 321.

[0060] Terminal contact block 321 refers to a planar structure with a regular geometric shape at the end of conductive sheet 300, whose planar area is used to form surface contact with external terminals. Support member 400 abutting the middle means that the support member acts on the geometric center area of ​​terminal contact block 321 in a point contact or small area contact manner.

[0061] The second connecting end 320 of the conductive sheet 300 is stamped to form a rectangular sheet-shaped terminal contact block 321. This contact block is embedded in the mounting groove of the end cap 200 and has a portion exposed through a notch 220 for insertion with an external terminal. The support member 400 extends from the device housing 100 toward the contact block, with its end abutting against the center of the back of the contact block. When an external terminal is inserted, the thrust on the contact block is transmitted to the device housing 100 through the support member 400. Since the support point is located in the middle of the contact block, the external pressure can be evenly distributed, preventing the contact block from bending and deforming due to unilateral force.

[0062] Optionally, refer to Figure 7 As shown, the support member 400 has a columnar structure, and its cross-sectional area is smaller than that of the terminal contact block 321. The columnar structure, through axial rigid support and optimization of local contact area, avoids the support member 400 from occupying too much space and effectively disperses the compressive force of the external terminals.

[0063] As a preferred technical solution of this application, there are multiple conductive sheets 300, and the number of support members 400 corresponds one-to-one with the number and position of the conductive sheets 300. The correspondence between the number of support members 400 and the number and position of the conductive sheets 300 means that the number of support members 400 corresponding to each conductive sheet 300 matches its installation position. Each conductive sheet 300 has one support member 400 at its second connection end 320, and the distribution position of the support members 400 coincides with the installation position of the conductive sheet 300.

[0064] By providing a separate support member 400 for each conductive sheet 300, it can be ensured that the position of the support member 400 corresponds to that of the conductive sheet 300. The conductive sheet 300 can be located at the end of the support member 400 along the axial direction. During the process of the conductive sheet 300 being compressed, the force transmitted from the conductive sheet 300 to the support member 400 is transmitted along the axial direction of the support member 400. This arrangement allows the slender support member 400 to withstand maximum pressure without easily deforming.

[0065] As a preferred embodiment, refer to Figure 15 As shown, the conductive sheet 300 includes a developing roller conductive sheet 301, a powder feeding roller conductive sheet 302, and a powder discharging blade conductive sheet 303. The support member 400 includes a first positioning post 401 for supporting the developing roller conductive sheet 301, a second positioning post 402 for supporting the powder feeding roller conductive sheet 302, and a third positioning post 403 for supporting the powder discharging blade conductive sheet 303.

[0066] In the vertical direction, the first positioning post 401, the second positioning post 402, and the third positioning post 403 are arranged in order from low to high;

[0067] In the horizontal direction, the second positioning post 402 is located between the first positioning post 401 and the third positioning post 403. The first positioning post 401 is close to the axis of the developing roller, and the third positioning post 403 is close to the handle 500 of the device housing 100.

[0068] The first positioning post 401, the second positioning post 402, and the third positioning post 403 are arranged in an upwardly inclined structure, so that the installation space below the third positioning post 403 is larger than the installation space below the first positioning post 401, which makes it easier for the powder discharge knife connector 600 used to install the powder discharge knife to be installed below the first positioning post 401, the second positioning post 402, and the third positioning post 403.

[0069] Specifically, refer to Figure 15-18As shown, the powder dispensing blade connector 600 has a first connecting portion 610 for connecting a nut and a second connecting portion 620 for fixing the powder dispensing blade conductive sheet 303 by compression. The outer dimensions of the second connecting portion 620 are larger than those of the first connecting portion 610. A fixing groove 700 for installing the powder dispensing blade connector 600 is formed in the aforementioned installation space. The shape of the fixing groove 700 matches the shape of the powder dispensing blade connector 600. It includes a first groove 710 for accommodating the first connecting portion 610 and a second groove 720 for accommodating the second connecting portion 620. The outline dimensions of the second groove 720 are larger than those of the first groove 710. By forming the first positioning post 401, the second positioning post 402, and the third positioning post 403 into an upwardly inclined structure, the fixing groove 700 can be positioned below it and kept horizontal. The first groove 710 is close to the first positioning post 401, and the second groove 720 is close to the third positioning post 403. This allows for more effective use of the installation space and ensures the installation height of the powder dispensing blade within the limited overall height of the product.

[0070] Furthermore, when multiple conductive sheets 300 and support members 400 are provided, adjacent support members 400 are connected by reinforcing ribs 410, or all support members 400 are connected in pairs by reinforcing ribs 410. By setting reinforcing ribs 410 to connect support members 400, a linkage structure is constructed between support members 400 to distribute the force at a single point and improve the overall rigidity. When the external terminal is inserted into the notch 220 and the conductive sheet 300 is squeezed, the reinforcing ribs 410 transfer the force of each support member 400 to the adjacent support member 400, transforming the originally independently bearing support points into a support system that shares the force, enabling it to better withstand pressure.

[0071] Preferably, refer to Figure 9 As shown, the end cap 200 is provided with a conductive sheet mounting groove 210 capable of accommodating the terminal contact block 321. The notch 220 is formed in the conductive sheet mounting groove 210, and the terminal contact block 321 is embedded in the conductive sheet mounting groove 210. Because the terminal contact block 321 is embedded in the conductive sheet mounting groove 210, this embedded structure can precisely position the terminal contact block 321. This ensures that the position of the terminal contact block 321 in the end cap 200 is relatively fixed and will not easily shift. Simultaneously, this mounting method helps to limit the second connecting end 320 of the conductive sheet 300, restricting its movement in the plane and ensuring that the terminal contact block 321 is accurately located in the predetermined position when connected to an external terminal, improving the accuracy and stability of the connection. When there are external interference factors (such as vibration, minor impacts, etc.), this mounting groove can protect the terminal contact block 321 from external factors, reducing the possibility of accidental damage.

[0072] This application provides a specific structure of a terminal contact block 321, referring to... Figure 10 As shown, the periphery of the terminal contact block 321 is folded towards the device housing 100 to form an elastic support piece 322, and the terminal contact block 321 is engaged in the conductive sheet mounting groove 210 by the elastic support piece 322. (Refer to...) Figure 11 As shown, the portion of the conductive sheet mounting groove 210 near the device housing 100 protrudes inward to form a support platform 230, and the end of the elastic support sheet 322 away from the terminal contact block 321 abuts against the support platform 230.

[0073] The terminal contact block 321 is engaged in the conductive sheet mounting groove 210 by an elastic support piece 322, and the elastic support piece 322 abuts against the support platform 230 in the mounting groove, which makes the installation of the terminal contact block 321 in the mounting groove more stable. During long-term use, it can maintain its stable state in the mounting groove and will not loosen or shift due to frequent insertion and removal of external terminals, thereby ensuring the stability of the connection between the conductive sheet 300 and the external terminals and contributing to a long-term stable electrical connection.

[0074] Precise positioning and a stable installation method ensure a more reliable connection between the terminal contact block 321 and the external terminals. During electrical connection, there will be no poor contact due to misalignment of the terminal contact block 321. This structure not only ensures the stability of the terminal contact block 321 but also helps maintain the overall shape and position of the conductive sheet 300, thereby ensuring the stability of the electrical conduction path from the first connection end 310 to the second connection end 320. This guarantees reliable electrical connection for the entire conductive sheet mounting structure under various operating conditions (such as vibrations inside the printer, temperature changes, etc.).

[0075] This application also provides the specific connection positions between the conductive sheet 300 and the electrical device 110. In one embodiment, the first connection end 310 of the conductive sheet 300 extends into the interior of the device housing 100 and is electrically connected to the electrical device 110. This method can reduce the number of connecting parts in the accommodating space, which is beneficial to optimizing the layout in the accommodating space. In particular, when the accommodating space is limited and other parts (such as multiple conductive sheets 300, support members 400, reinforcing ribs 410, etc.) need to be arranged in it, reducing the complexity of the connection structure in the accommodating space helps to improve space utilization.

[0076] When the internal space of the device housing 100 is relatively compact, and the portion of the electrical component 110 extending into the receiving space is more easily connected to the conductive sheet 300, the portion of the electrical component 110 extending into the receiving space can be used to electrically connect to the electrical component 110. During assembly, this method makes the connection operation between the conductive sheet 300 and the electrical component 110 easier, as some operations can be completed within the receiving space without needing to delve into the device housing 100 for complex assembly, thus improving assembly convenience. It also facilitates later maintenance and repair. When it is necessary to inspect or replace the conductive sheet 300 or the electrical component 110, the operation can be performed within the receiving space, reducing interference with the internal structure of the device housing 100.

[0077] It is understood that the above two connection methods are not the only structures used. When multiple conductive sheets 300 and electrical appliances are provided, some of the conductive sheets 300 can be electrically connected to the electrical device 110 by extending the first connection end 310 into the inside of the device housing 100, while the other part can be electrically connected to the electrical device 110 by extending the part of the electrical device 110 into the accommodating space.

[0078] Meanwhile, this application embodiment also provides a processing box with several electrical components 110, including a developing roller, an air supply roller, and a toner dispensing blade. The developing roller, the air supply roller, and the toner dispensing blade are all connected to a conductive sheet 300 mounted on the conductive sheet mounting structure described above. This connection method enables stable power supply to the developing roller, the air supply roller, and the toner dispensing blade, ensuring continuous and stable developing operation of the developing roller, normal air supply from the air supply roller to maintain air circulation and temperature control within the printer, and accurate control of the toner quantity and distribution by the toner dispensing blade. This avoids toner leakage or uneven toner distribution caused by electrical connection problems, improving print clarity and quality.

[0079] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A conductive sheet mounting structure, characterized in that, include: The device housing (100) has an electrical component (110) installed inside; An end cap (200) is fastened to the end of the device housing (100) and forms a receiving space between it and the device housing (100); A conductive sheet (300), located in the receiving space, has a first connecting end (310) and a second connecting end (320). The first connecting end (310) is electrically connected to an electrical component (110) inside the device housing (100). The second connecting end (320) is exposed outside the end cover (200) through a notch (220) on the end cover (200) on the side facing the end cover (200) for connecting to an external terminal. A support member (400) is provided on the housing (100) of the device, extending toward the second connection end (320) of the conductive sheet (300). The support member (400) abuts against the conductive sheet (300) on the inner side of the second connection end (320) to prevent the conductive sheet (300) from being deformed inward under the pressure of the external terminal.

2. The conductive sheet mounting structure according to claim 1, characterized in that, The second connection end (320) is formed with a rectangular plate-shaped terminal contact block (321), and the support member (400) abuts against the middle of the terminal contact block (321).

3. The conductive sheet mounting structure according to claim 2, characterized in that, The support member (400) has a columnar structure and its cross-sectional area is smaller than that of the terminal contact block (321).

4. The conductive sheet mounting structure according to claim 1, characterized in that, The conductive sheet (300) consists of multiple sheets, and the number of the support member (400) corresponds one-to-one with the number and position of the conductive sheet (300).

5. The conductive sheet (300) mounting structure according to claim 4, characterized in that, The conductive sheet (300) includes a developing roller conductive sheet (301), a powder feeding roller conductive sheet (302), and a powder discharging blade conductive sheet (303). The support member (400) includes a first positioning post (401) for supporting the developing roller conductive sheet (301), a second positioning post (402) for supporting the powder feeding roller conductive sheet (302), and a third positioning post (403) for supporting the powder discharging blade conductive sheet (303). In the vertical direction, the first positioning post (401), the second positioning post (402), and the third positioning post (403) are arranged in order from low to high; In the horizontal direction, the second positioning post (402) is located between the first positioning post (401) and the third positioning post (403). The first positioning post (401) is close to the axis of the developing roller, and the third positioning post (403) is close to the handle (500) of the device housing (100).

6. The conductive sheet mounting structure according to claim 5, characterized in that, Adjacent support members (400) are connected by reinforcing ribs (410), or all support members (400) are connected in pairs by reinforcing ribs (410).

7. The conductive sheet mounting structure according to claim 2, characterized in that, The end cap (200) is provided with a conductive sheet mounting groove (210) capable of accommodating the terminal contact block (321), and the notch (220) is formed in the conductive sheet mounting groove (210), and the terminal contact block (321) is embedded in the conductive sheet mounting groove (210).

8. The conductive sheet mounting structure according to claim 7, characterized in that, The periphery of the terminal contact block (321) is folded toward the device housing (100) to form an elastic support piece (322), and the terminal contact block (321) is engaged in the conductive sheet mounting groove (210) by the elastic support piece (322).

9. The conductive sheet mounting structure according to claim 8, characterized in that, The portion of the conductive sheet mounting groove (210) near the device housing (100) protrudes inward to form a support platform (230), and the end of the elastic support sheet (322) away from the terminal contact block (321) abuts against the support platform (230).

10. The conductive sheet mounting structure according to claim 1, characterized in that, The first connection end (310) of the conductive sheet (300) extends into the interior of the device housing (100) and is electrically connected to the electrical device (110), or the portion extending into the accommodating space through the electrical device (110) is electrically connected to the electrical device (110).

11. A processing box having a plurality of electrical components (110), characterized in that, The electrical device (110) includes a developing roller, an air supply roller, and a powder discharge blade. The developing roller, the air supply roller, and the powder discharge blade are all connected to the conductive sheet (300) mounted on the conductive sheet mounting structure according to any one of claims 1-10.

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