A sealing structure for the toner cartridge outlet

Abstract

This utility model belongs to the technical field of printer equipment, specifically relating to a toner cartridge outlet sealing structure. The toner cartridge outlet sealing structure, connected to an outlet on the cartridge body, includes a cover, a connecting post installed on the cover and inserted into the outlet, and a sealing ring disposed on the outer wall of the connecting post. The connecting post has a cavity, and multiple openings communicating with the cavity are provided on the surface of the connecting post away from the cover. The cavity is filled with a moisture-proof material. This utility model achieves efficient sealing and moisture prevention of the toner outlet through the integrated design of the sealing ring and the moisture-proof material. Simultaneously, the structure is simple, easy to assemble and disassemble, and convenient for user cleaning and maintenance.

Description

Technical Field

[0001] This utility model belongs to the technical field of printer equipment, specifically relating to a sealing structure for the toner cartridge outlet. Background Technology

[0002] Toner cartridges are critical consumables in office equipment such as laser printers and copiers. The toner stored inside is output to the developing unit through the toner outlet. The sealing performance of the toner outlet directly affects the toner utilization efficiency and print quality. If the seal is not tight, toner may leak, causing environmental pollution and equipment malfunction; at the same time, external moisture can easily enter the cartridge, causing the toner to become damp and clump, affecting print quality. Therefore, the design of the toner outlet sealing structure is crucial.

[0003] Existing toner cartridges typically use a closed switch or a simple cover structure to seal the toner outlet. For example, document CN223108271U discloses a highly airtight, moisture-proof toner cartridge that improves sealing and moisture-proof performance through a cover assembly and a moisture-proof component. In this design, a perforation is provided on the side of the cartridge, where the moisture-proof component is installed, and the cover is secured by rotating a knob. However, this structure has significant drawbacks: firstly, the cover is fixed to the cartridge body by rotation, which easily creates gaps, leading to poor sealing and a high risk of toner leakage.

[0004] Therefore, there is an urgent need in this field for a new type of toner cartridge outlet sealing structure that can achieve high sealing performance, effective moisture prevention, and easy disassembly and cleaning, so as to overcome the shortcomings of the existing technology. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this utility model is to provide a toner cartridge outlet sealing structure. By integrating a sealing ring and a moisture-proof body, it achieves efficient sealing and moisture protection of the outlet. At the same time, the structure is simple, easy to assemble and disassemble, and convenient for users to clean and maintain.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A toner cartridge outlet sealing structure, connected to an outlet formed on the cartridge body, includes a cover, a connecting post installed on the cover and inserted into the outlet, and a sealing ring disposed on the outer wall of the connecting post; the connecting post has a cavity, and the surface of the connecting post away from the cover has a plurality of openings communicating with the cavity; the cavity is filled with a moisture-proof material.

[0007] As a further preferred embodiment of the present invention, the cover is provided with a fixing post for installing the connecting post; the outer wall of the end of the fixing post away from the cover is provided with an external thread, and the end of the connecting post near the cover is provided with an internal thread hole that communicates with the cavity and matches the external thread.

[0008] As a further preferred embodiment of this utility model, the cover is provided with a fixing internal thread hole, and the outer wall of the fixing post on the side away from the connecting post is provided with a fixing external thread that matches the fixing internal thread hole.

[0009] As a further preferred embodiment of this invention, the fixed post has a protrusion on its end surface away from the connecting post.

[0010] As a further preferred embodiment of this utility model, an inwardly recessed annular groove is formed on the outer wall of the end of the fixing post away from the cover.

[0011] As a further preferred embodiment of this invention, the outer diameter of the sealing ring is greater than or equal to the inner diameter of the outlet.

[0012] As a further preferred embodiment of this utility model, a positioning groove is provided on the surface of the box body near the cover body, and a positioning rod matching the positioning groove is provided on the surface of the cover body.

[0013] As a further preferred embodiment of the present invention, the moisture-proof body includes a bag and a moisture-proof agent filled inside the bag.

[0014] The beneficial effects of this utility model are: This invention utilizes a combination design of a connecting column and a sealing ring, with the sealing ring interlocking with the inner wall of the outlet to effectively prevent toner leakage. Simultaneously, a positioning structure ensures accurate alignment between the cover and the cartridge body, further reducing gaps.

[0015] This utility model's moisture-proof body is placed inside the cavity of the connecting column and communicates with the inner part of the cartridge through an opening, enabling it to continuously absorb moisture and improve print quality. Furthermore, the moisture-proof body is placed directly near the toner outlet, allowing for targeted moisture absorption and preventing toner from clumping due to moisture.

[0016] This utility model adopts a threaded connection method, and the fixing column, connecting column and cover can be quickly disassembled, making it convenient for users to replace the moisture-proof body or clean residual toner. Attached Figure Description

[0017] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Appendix Figure 2 This is a schematic diagram of the exploded cross-sectional structure of this utility model.

[0019] Appendix Figure 3 This is a schematic diagram of the assembly cross-sectional structure of this utility model.

[0020] Attached drawings: Box body 100, cover body 200, connecting post 300, sealing ring 400, moisture-proof body 500, fixing post 600, positioning rod 700; Export 110, positioning groove 120; Fixed internal thread hole 210; Cavity 310, opening 320, internal threaded hole 330; Bag 510, desiccant 520; Connecting external thread 610, fixing external thread 620, convex bar 630, and inward annular groove 640. Detailed Implementation

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0023] This embodiment provides a toner cartridge outlet sealing structure, which connects to the outlet 110 formed on the cartridge body 100. (See attached...) Figure 1 ~Appendix Figure 3 As shown, the sealing structure includes a cover 200, a connecting post 300, a sealing ring 400, and a moisture-proof body 500.

[0024] The overall structure of this device is as follows: A cover 200 covers the outside of an outlet 110. A connecting post 300 extends from the cover 200 and inserts into the outlet 110. A sealing ring 400 is fitted onto the outer wall of the connecting post 300, making tight contact with the inner wall of the outlet 110. A cavity 310 is provided within the connecting post 300, which is filled with a moisture-proof body 500. Multiple openings 320 communicating with the cavity 310 are provided on the surface of the connecting post 300 away from the cover 200, allowing the cavity 310 to communicate with the interior of the cartridge 100. When the cover 200 is closed, the sealing ring 400 prevents toner leakage, while the moisture-proof body 500 absorbs moisture from inside the cartridge, ensuring the toner remains dry.

[0025] Specifically, the cartridge body 100 is the main body of the toner cartridge, and is usually injection molded from plastic. The outlet 110 is located on the side or bottom of the cartridge body 100, and is circular or rectangular in shape, with a smooth inner wall to ensure good contact with the sealing ring 400.

[0026] Specifically, the cover 200 is typically made of plastic (such as ABS or polycarbonate) and its shape matches the periphery of the outlet 110 of the box 100. The main function of the cover 200 is to cover the outlet 110 and provide a connection point for installing other components. A positioning groove 120 is provided on the surface of the box 100 near the cover 200, and a positioning rod 700 is provided on the surface of the cover 200. The positioning rod 700 is a cylindrical or conical protrusion that mates with the positioning groove 120 on the box 100. The design of the positioning rod 700 and the positioning groove 120 ensures precise alignment between the cover 200 and the box 100, preventing misalignment during installation that could lead to a poor seal. In specific implementations, multiple positioning rods 700 can be provided, distributed in different positions to enhance stability.

[0027] Specifically, the connecting post 300 can be made of a wear-resistant material (such as nylon or POM), with one end connected to the fixing post 600 and the other end inserted into the outlet 110. The end surface of the connecting post 300 away from the cover 200 has multiple openings 320, evenly distributed, for example, arranged in a ring, numbering 4 to 8, with a diameter of approximately 1 to 2 mm. The openings 320 communicate with the cavity 310 and the interior of the box 100, allowing moisture to enter the cavity 310 and be absorbed by the moisture barrier 500. The end of the connecting post 300 near the cover 200 has an internal threaded hole 330 for engaging with the external thread 610 of the fixing post 600. A sealing ring 400 is installed on the outer wall of the connecting post 300.

[0028] Specifically, the fixing post 600, serving as an intermediate component connecting the cover 200 and the connecting post 300, is made of high-strength plastic. One end of the fixing post 600 has a fixing external thread 620 that matches the fixing internal thread hole 210 of the cover 200; the other end has a connecting external thread 610 that matches the internal thread hole 330 of the connecting post 300. The end surface of the fixing post 600 away from the connecting post 300 has raised ribs 630, which are radially protruding and typically number 1 to 4, facilitating quick installation and removal by the user through pinching and rotating with their fingers. An inwardly recessed annular groove 640 is also formed on the outer wall of the end of the fixing post 600 away from the cover 200. This inwardly recessed annular groove 640 is a recessed structure used to provide installation space during the installation of the connecting post 300.

[0029] More specifically, the sealing ring 400, made of an elastic material (such as silicone rubber or nitrile rubber), is fixed to the outer wall of the connecting post 300. The outer diameter of the sealing ring 400 is slightly larger than or equal to the inner diameter of the outlet 110, forming an interference fit. For example, if the inner diameter of the outlet 110 is 10 mm, the outer diameter of the sealing ring 400 can be designed to be 10.1~10.5 mm to ensure compression deformation during insertion, tightly fitting the inner wall of the outlet 110. This design effectively prevents toner leakage from the outlet 110 while resisting the intrusion of external moisture.

[0030] More specifically, the moisture barrier 500 fills the cavity 310 of the connecting post 300, including a pouch 510 and a desiccant 520 filled within the pouch 510. The pouch 510 is made of a breathable material (such as non-woven fabric or microporous polyethylene) and filled with a desiccant, such as silica gel, molecular sieve, or calcium chloride. The moisture barrier 500 exchanges gas with the interior of the cartridge 100 through the opening 320, continuously absorbing moisture. The moisture barrier 500 can be designed to be replaceable; users can simply remove the connecting post 300 to remove the old moisture barrier and install a new one, extending the toner cartridge's lifespan. Moreover, the moisture barrier 500 is placed directly near the toner outlet, specifically absorbing moisture to prevent toner clumping and improve print quality.

[0031] The following is the operating principle of this device: 1. Fill the desiccant into the bag 510, seal it to form a desiccant body 500, and then place it into the cavity 310 of the connecting column 300. Ensure that the desiccant body 500 fills the cavity 310 but does not block the opening 320.

[0032] 2. Place the sealing ring 400 on the outer wall of the connecting post 300, usually in the middle or near the end of the connecting post 300.

[0033] 3. Screw the external thread 610 of the fixing post 600 into the internal thread hole 330 of the connecting post 300, and rotate the fixing post 600 until it is tightened.

[0034] 4. Screw the external thread 620 of the fixing post 600 into the internal thread hole 210 of the fixing body 200, and the connecting post 300 becomes an integral part of the cover body 200 through the fixing post 600.

[0035] 5. Align the positioning rod 700 of the cover 200 with the positioning groove 120 of the box 100, and gently press to insert the connecting post 300 into the outlet 110. Due to the interference fit between the sealing ring 400 and the inner wall of the outlet 110, some resistance will be generated; slight force is required to ensure proper placement. Once the cover 200 and the box 100 are in place, the sealing structure is complete.

[0036] The disassembly process is the reverse: first pull out the cover 200, then rotate the fixing post 600 to remove the connecting post 300, and then you can replace the moisture-proof body 500 or clean the inside.

[0037] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A toner cartridge outlet seal structure, which is connected with an outlet (110) opened on a cartridge body (100), characterized in that: Includes a cover (200), a connecting post (300) installed on the cover (200) and inserted into the outlet (110), and a sealing ring (400) disposed on the outer wall of the connecting post (300); the connecting post (300) is provided with a cavity (310), and the surface of the connecting post (300) away from the cover (200) is provided with a plurality of openings (320) communicating with the cavity (310); the cavity (310) is used to fill a moisture-proof body (500).

2. The toner cartridge outlet seal structure of claim 1, wherein: The cover (200) is provided with a fixing post (600) for installing the connecting post (300); the outer wall of the end of the fixing post (600) away from the cover (200) is provided with an external thread (610), and the end of the connecting post (300) near the cover (200) is provided with an internal thread hole (330) that communicates with the cavity (310) and matches the external thread (610).

3. The toner cartridge outlet seal structure of claim 2, wherein: The cover (200) is provided with a fixed internal thread hole (210), and the outer wall of the fixed post (600) away from the connecting post (300) is provided with a fixed external thread (620) that matches the fixed internal thread hole (210).

4. The toner cartridge outlet seal structure of claim 3, wherein: The protrusion (630) on the end surface of the fixing post (600) away from the connecting post (300).

5. The toner cartridge outlet seal structure of claim 2, wherein: An inwardly recessed annular groove (640) is formed on the outer wall of the end of the fixed post (600) away from the cover (200).

6. The toner cartridge outlet seal structure of claim 1, wherein: The outer diameter of the sealing ring (400) is greater than or equal to the inner diameter of the outlet (110).

7. The toner cartridge outlet seal structure of claim 1, wherein: The box body (100) has a positioning groove (120) on its surface near the cover (200), and the cover (200) has a positioning rod (700) that matches the positioning groove (120) on its surface.

8. The toner cartridge outlet seal structure of claim 1, wherein: The moisture barrier (500) includes a bag (510) and a moisture-proof agent (520) filled in the bag (510).

Images