Sealing structure of powder bin and processing cartridge applying same

Abstract

The utility model discloses a sealing structure of powder bin and processing box applying it. The sealing structure of powder bin includes: the powder bin casing that can hold carbon powder, is provided with the opening at one side surface, is provided with the first connecting surface on the powder bin casing at the opening brim, the cover body, covers part opening, has the first cover part and the second cover part that mutually parallel, the scraper, covers the remaining part opening and partly cutter body and the second cover part overlap, the first sealing member and the second sealing member that can be compressed. Among them, the first sealing member is used for sealing the connecting surface of cover body and powder bin casing and the connecting surface of scraper and powder bin casing, and the second sealing member is arranged between the second cover part and the scraper. The utility model can effectively improve the sealing property of processing box powder bin at the connecting position, and solve the problem that the present processing box powder bin casing and cover body are welded by ultrasonic welding and the welding position can produce overflow (flash), surface scratch or depression.

Description

Technical Field

[0001] This application relates to the field of sealing structure technology for powder hoppers, and more particularly to a sealing structure for a powder hopper and a processing box using the same. Background Technology

[0002] Modern laser printers are driven by computer binary data. A laser beam carrying image and text information is generated by a video controller and a laser scanning system, and finally, an electrophotographic system completes the image transfer. The core process includes a selenium photosensitive drum obtaining surface potential through charging electrodes, laser beam exposure generating an electrostatic latent image, magnetic brush developer converting it into a toner image, toner transferring to paper through an electric field, and high-temperature fixing to form the image and text.

[0003] Currently, toner in image forming equipment is stored inside the toner hopper. The hopper cover is usually installed on the hopper using ultrasonic welding to seal most of the hopper, so that toner only exits from the toner outlet. However, ultrasonic welding can result in flash, surface scratches, or dents at the welded areas. In addition, custom molds are more expensive. Utility Model Content

[0004] The purpose of this utility model embodiment is to provide a sealing structure for a powder hopper and a processing box using the same, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] This utility model discloses a sealing structure for a powder hopper, applied to a processing box, comprising:

[0007] A toner cartridge housing that can hold toner, wherein an opening is provided on one side surface of the toner cartridge housing, and a first connecting surface is provided on the toner cartridge housing at the edge of the opening;

[0008] A cover body is connected to the first connecting surface and covers part of the opening. The cover body has a first covering part and a second covering part that are parallel to each other. The first covering part and the second covering part are connected by a bending part.

[0009] A scraper covers the remaining portion of the opening, with a portion of the blade overlapping the second covering portion;

[0010] A compressible seal, comprising a first seal and a second seal;

[0011] The first sealing element is disposed around the opening to seal the connection surface between the cover and the powder hopper housing, as well as the connection surface between the scraper and the powder hopper housing. The second sealing element is disposed between the second covering part and the scraper.

[0012] On the one hand, a second connecting surface is also provided on the powder hopper shell, and the second connecting surface is recessed below the first connecting surface.

[0013] On the one hand, a recess is provided on the second connecting surface to accommodate the end position of the second covering part;

[0014] The first seal is fitted to the recessed portion, and the first seal has a recessed area within the recessed portion.

[0015] On the one hand, both ends of the second covering part are located in the recessed area and are tightly connected to the first sealing member;

[0016] The recessed portion includes a first positioning surface and a second positioning surface, and the bent portion is positioned and connected to the first positioning surface through the first sealing element.

[0017] On the one hand, the depth of the recess is greater than the thickness of the second covering portion;

[0018] When the scraper is connected to a portion of the opening, a gap is formed between the portion of the scraper body above the recess and the second covering portion.

[0019] On one hand, the scraper includes a blade body and a cutting edge connected to the blade body;

[0020] Wherein, the two ends of the blade body are connected to the first connecting surface, and the gap is located between the blade body and the second covering part.

[0021] On the one hand, the second seal is compressed and disposed in the gap between the second cover and the blade body.

[0022] On the one hand, the end position of the second seal extends into the recess.

[0023] On the one hand, the cover is detachably and lockably connected to a connector provided on the powder hopper housing.

[0024] This utility model also provides a processing box, which includes a sealing structure for the powder hopper as described in any of the preceding claims.

[0025] The beneficial effects of this application are as follows:

[0026] 1. Through the multi-seal design of compressible seals between the cover and the powder hopper housing and scraper, the problems of overflow, scratches or dents caused by traditional ultrasonic welding can be effectively improved, ensuring the tightness of the connection.

[0027] 2. The design of the recessed portion and the extension further enhances the seal, especially through the sealing element wrapping the end of the second cover and the extension pressing the sealing element, achieving all-round powder leakage prevention. By connecting the cover body and the powder hopper housing separately, it is easy to disassemble and maintain them individually. At the same time, the detachable design of the connector and the powder hopper housing simplifies the assembly process.

[0028] 3. The recessed second connecting surface provides a positioning reference for the first seal, ensuring uniform compression. The recessed portion accommodates the end of the second covering portion, preventing misalignment during assembly and improving assembly efficiency.

[0029] 4. By coordinating the cover and scraper to seal the perpendicular openings, and using a sealant to fill the gap at the intersection, toner leakage is prevented.

[0030] 5. The gap between the blade body and the second cover part of the scraper is formed by compressing the second seal to form an elastic buffer, which both seals and reduces the impact of mechanical vibration on the stability of the scraper. Attached Figure Description

[0031] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0032] Figure 1 This is a schematic diagram of the overall structure of a processing box according to the present invention;

[0033] Figure 2 This is a schematic diagram of the overall structure of a sealing structure for a powder hopper according to the present invention;

[0034] Figure 3 This is a partial exploded view of the sealing structure of a powder hopper according to the present invention.

[0035] Figure 4 for Figure 3 A partially enlarged structural diagram;

[0036] Figure 5 This is a partial exploded view of the sealing structure of a powder hopper according to the present invention.

[0037] Figure 6 This is a cross-sectional structural diagram of a sealing structure for a powder hopper according to the present invention.

[0038] Figure 7 This is a schematic diagram of the structure of a powder hopper shell according to the present invention, showing a sealing structure for a powder hopper.

[0039] Figure 8 This is a schematic diagram showing the position of the first and second positioning surfaces of a sealing structure for a powder hopper according to the present invention.

[0040] In the picture:

[0041] 100. Processing box; 110. Scraper; 111. Blade body; 1110. Extension; 112. Blade edge; 120. Connector;

[0042] 200. Powder hopper shell; 210. Opening; 211. First opening; 212. Second opening; 220. First connecting surface; 230. Second connecting surface; 231. Recess; 2311. First positioning surface; 2312. Second positioning surface; 232. Recessed area;

[0043] 300. Cover body; 301. First covering part; 302. Second covering part; 310. Bending part;

[0044] 400. Seal; 410. First seal; 420. Second seal;

[0045] 500, gap. Detailed Implementation

[0046] 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.

[0047] 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 based on the specific circumstances.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] Please see Figure 1 This utility model provides a processing box 100, which is provided with a powder hopper, and the toner is located in the powder hopper.

[0053] Based on the above-described processing box 100, this utility model also provides a sealing structure for a powder hopper, which can be used in the above-described processing box 100.

[0054] Please see Figures 2 to 8 In one embodiment, the sealing structure of the powder hopper provided by this utility model includes a powder hopper housing 200 for containing toner, a cover 300, a scraper 110, and a compressible sealing element 400. The cover 300 is connected to the powder hopper housing 200, and the sealing element 400 is connected at the connection point between the cover 300 and the powder hopper housing 200 to improve the sealing performance between the cover 300 and the powder hopper housing 200 at the connection point. This further improves the problems that may occur at the weld joint of the powder hopper housing 200 and the cover 300 of the current processing box 100 due to ultrasonic welding, such as overflow (burrs), surface scratches, or dents.

[0055] An opening 210 communicating with the powder hopper is provided on the powder hopper housing 200. The opening 210 facilitates the installation of the powder hopper housing 200 and the cover 300. A first connecting surface 220 is provided on the powder hopper housing 200 at the edge of the opening 210. The cover 300 is connected to the opening 210 of the powder hopper housing 200, and is connected to the first connecting surface 220, covering part of the opening 210.

[0056] The cover 300 has a first covering portion 301 and a second covering portion 302 that are parallel to each other, and the first covering portion 301 and the second covering portion 302 are connected by a bending portion 310.

[0057] Specifically, the edge of the first covering portion 301 is connected to the first connecting surface 220. By connecting the first covering portion 301 to the first connecting surface 220, the first covering portion 301 can cover part of the opening 210. Based on this, it is possible to first connect the first covering portion 301 of the cover 300 to the toner cartridge housing 200, and then connect the toner cartridge housing 200 to the image forming apparatus.

[0058] In one embodiment, the opening 210 on the powder hopper housing 200 may include a first opening 211 and a second opening 212, with the orientations of the first opening 211 and the second opening 212 perpendicular to each other. It should be noted that a first covering portion 301 is disposed at the first opening 211, and a scraper 110 is disposed at the second opening 212. Therefore, the first opening 211 can be closed by the first covering portion 301, and the remaining portions of the first opening 211 and the second opening 212 can be covered by the scraper 110, with a portion of the scraper 110 overlapping the second covering portion 302.

[0059] Specifically, the scraper 110 and the cover 300 are interconnected to close the intersection of the plane containing the first opening 211 and the plane containing the second opening 212. Therefore, a seal 400 can also be provided between the cover 300 and the scraper 110 to improve the sealing performance of the cover 300 and the scraper 110 at the connection point.

[0060] The sealing element 400 includes a first sealing element 410 and a second sealing element 420. The first sealing element 410 is disposed around the first opening 211 to seal the connection surface between the cover 300 and the powder hopper housing 200, as well as the connection surface between the scraper 110 and the powder hopper housing 200. The second sealing element 420 is disposed between the second covering part 302 and the scraper 110.

[0061] Specifically, the scraper 110 includes a blade body 111 and a cutting edge 112 connected to the blade body 111. The cutting edge 112 and the blade body 111 are integrally formed, and the cutting edge 112 and the blade body 111 are arranged at an angle. The two ends of the blade body 111 are connected to the first connecting surface 220, and there is a fillable gap 500 between the blade body 111 and the second covering portion 302.

[0062] Understandably, the second seal 420 is located between the second cover portion 302 and the blade portion 111, and the second seal 420 is compressed and disposed within the gap 500. Therefore, by providing the second seal 420 between the second cover portion 302 and the blade portion 111, the tightness of the second cover portion 302 and the scraper 110 at the connection position is ensured.

[0063] It should be noted that the seal 400 is made of a compressible material, such as a sponge, silicone ring, or rubber ring. In this embodiment, the seal 400 is made of sponge.

[0064] In one embodiment, a second connecting surface 230 for accommodating the first seal 410 may be provided on the powder hopper housing 200, and the second connecting surface 230 may be recessed below the first connecting surface 220. By providing the second connecting surface 230 for connecting the first seal 410, positioning of the first seal 410 is facilitated. When the first seal 410 is disposed on the second connecting surface 230, the first seal 410 protrudes from the first connecting surface 220. Therefore, when the cover 300 is connected to the first connecting surface 220, the first seal 410 can be compressed between the cover 300 and the second connecting surface 230. Under the elastic force of the first seal 410 itself, the sealing performance between the cover 300 and the first connecting surface 220 at the connection position can be effectively improved.

[0065] Furthermore, to improve the sealing performance of the device during actual use, a recess 231 is provided on the second connecting surface 230 to accommodate the end position of the second covering part 302. The first sealing member 410 fits into the recess 231, and the first sealing member 410 forms a recessed area 232 within the recess 231.

[0066] Understandably, both ends of the second covering portion 302 are located within the recessed area 232 and are tightly connected to the first sealing element 410. The first sealing element 410 is provided at the connection points between the cover 300 and the first connecting surface 220. Simultaneously, by providing the recessed portion 231, the end positions of the second covering portion 302 of the cover 300 are accommodated, further improving the sealing effect.

[0067] The recessed portion 231 includes a first positioning surface 2311 and a second positioning surface 2312. The bent portion 310 is positioned and connected to the first positioning surface 2311 through the first sealing member 410. Therefore, during the actual installation of the cover 300, the cover 300 can be positioned through the first positioning surface 2311 to improve the accuracy of the connection between the cover 300 and the powder hopper housing 200.

[0068] It should be noted that the depth of the recess 231 is greater than the thickness of the second cover 302, and when the scraper 110 is connected to the partial opening 210, a gap 500 is formed between the blade portion 111 of the scraper 110 above the recess 231 and the second cover 302. Therefore, by providing the second seal 420 within the gap 500 between the second cover 302 and the blade portion 111, the sealing performance of the scraper 110 and the cover 300 at the connection position is improved by the second seal 420.

[0069] Furthermore, the recess 231 is located at the center of the first connecting surface 220, and the first sealing member 410 extends to the end of the first connecting surface 220 after being fitted into the recess 231. Simultaneously, both ends of the blade portion 111 of the scraper 110 are provided with extension portions 1110, and the extension portions 1110 are connected to the first connecting surface 220. Understandably, the extension portions 1110 compress the first sealing member 410 to ensure a seal between the extension portions 1110 and the first connecting surface 220 at the connection point.

[0070] In one embodiment, the end position of the second seal 420 may be allowed to extend into the recess 231 to improve the actual sealing effect of the device.

[0071] In one embodiment, the cover 300 is disposed on the first connecting surface 220, and the cover 300 is detachably and lockably connected to the powder hopper housing 200. Specifically, a connector 120 with bolt holes is detachably fixedly connected to the powder hopper housing 200, and the cover 300 is bolted to the connector 120. Since the connector 120 and the powder hopper housing 200 are detachably connected, it facilitates the convenience of assembling the connector 120 and the cover 300 in the actual assembly process.

[0072] In summary, the powder hopper sealing structure and the processing box 100 using it provided by this utility model can effectively improve the problems of overflow, scratches or dents caused by traditional ultrasonic welding by using a compressible sealing element 400 for multiple sealing designs between the cover 300, the powder hopper shell 200 and the scraper 110, and ensure the tightness of the connection position.

[0073] Secondly, the design of the recessed portion 231 and the extension portion 1110 further enhances the seal, especially through the wrapping of the end of the second cover portion 302 by the seal 400 and the compression of the seal 400 by the extension portion 1110, achieving all-round powder leakage prevention. By connecting the cover 300 and the powder hopper housing 200 separately, it is easy to disassemble and maintain them individually. At the same time, the detachable design of the connector 120 and the powder hopper housing 200 simplifies the assembly process.

[0074] Meanwhile, the recessed second connecting surface 230 provides a positioning reference for the first seal 410, ensuring uniform compression. The recessed portion 231 accommodates the end of the second covering portion 302, preventing misalignment during assembly and improving assembly efficiency.

[0075] Furthermore, by cooperating with the cover 300 and the scraper 110 to close the mutually perpendicular openings 210, and combining the seal 400 to fill the gap at the intersection, toner leakage is prevented. The gap 500 between the blade part 111 of the scraper 110 and the second cover part 302 is elastically buffered by compressing the second seal 420, which both seals and reduces the impact of mechanical vibration on the stability of the scraper 110.

[0076] 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 sealing structure for a powder hopper, applied to a processing box (100), characterized in that, include: A toner cartridge housing (200) capable of holding toner, wherein an opening (210) is provided on one side surface of the toner cartridge housing (200), and a first connecting surface (220) is provided on the toner cartridge housing (200) at the edge of the opening (210); A cover (300) is attached to the first connecting surface (220) and covers part of the opening (210). The cover (300) has a first covering part (301) and a second covering part (302) that are parallel to each other. The first covering part (301) and the second covering part (302) are connected by a bending part (310). A scraper (110) covers the remaining portion of the opening (210) and a portion of the blade overlaps with the second covering portion (302); A compressible seal (400) includes a first seal (410) and a second seal (420); The first sealing member (410) is disposed around the opening (210) to seal the connection surface between the cover (300) and the powder hopper housing (200) and the connection surface between the scraper (110) and the powder hopper housing (200). The second sealing member (420) is disposed between the second covering part (302) and the scraper (110).

2. The sealing structure of the powder hopper according to claim 1, characterized in that, A second connecting surface (230) is also provided on the powder hopper housing (200), and the second connecting surface (230) is recessed below the first connecting surface (220).

3. The sealing structure of the powder hopper according to claim 2, characterized in that, A recess (231) is provided on the second connecting surface (230) to accommodate the end position of the second covering part (302); The first seal (410) is fitted to the recess (231), and the first seal (410) forms a recessed area (232) in the recess (231).

4. The sealing structure of the powder hopper according to claim 3, characterized in that, The two ends of the second covering part (302) are located within the recessed area (232) and are tightly connected to the first sealing member (410); The recessed portion (231) includes a first positioning surface (311) and a second positioning surface (2312), and the bent portion (310) is positioned and connected to the first positioning surface (311) through the first sealing member (410).

5. The sealing structure of the powder hopper according to claim 4, characterized in that, The depth of the recess (231) is greater than the thickness of the second covering portion (302); When the scraper (110) is connected to a portion of the opening (210), a gap (500) is formed between the portion of the scraper (110) above the recess (231) and the second covering portion (302).

6. The sealing structure of the powder hopper according to claim 5, characterized in that, The scraper (110) includes a blade body (111) and a blade edge (112) connected to the blade body (111); The two ends of the blade body (111) are connected to the first connecting surface (220), and the gap (500) is located between the blade body (111) and the second covering part (302).

7. The sealing structure of the powder hopper according to claim 6, characterized in that, The second seal (420) is compressed and disposed in the gap (500) between the second cover portion (302) and the blade portion (111).

8. The sealing structure of the powder hopper according to claim 6, characterized in that, The end of the second seal (420) extends into the recess (231).

9. The sealing structure of the powder hopper according to claim 1, characterized in that, The cover (300) is detachably locked to the connector (120) provided on the powder hopper housing (200).

10. A processing box, characterized in that, The sealing structure includes the powder hopper as described in any one of claims 1-9.

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