Detachable selenium drum assembly

Abstract

The utility model relates to the technical field of printer accessories, in particular to a detachable toner cartridge assembly which comprises a toner cartridge main body, a top cover is fixedly mounted at the top of the toner cartridge main body through a plurality of fastening screws, an expansion and shrinkage assembly is arranged on the top cover, and the expansion and shrinkage assembly comprises a breather pipe fixedly mounted on the top cover. The bottom of the ventilation pipe is communicated with the interior of the selenium drum main body, a ventilation box is fixedly mounted at the top end of the ventilation pipe, an annular inner ring is fixedly mounted on the inner wall of the ventilation box, an upper fixing ring and a lower fixing ring are arranged above the inner ring, the fixing rings are annular, and a side edge fixing patch is fixedly mounted between the two fixing rings; an elastic film is fixedly installed on the inner annular side face of the side edge fixing paster, a rubber sealing gasket is fixedly installed on the bottom face of the lower fixing ring, and the rubber sealing gasket is fixed to the upper surface of the inner ring in an adhering mode. The air pressure can be continuously kept consistent after the interior of the selenium drum main body is influenced by temperature, and internal parts can be kept stable.

Description

Technical Field

[0001] This utility model relates to the field of printer accessories technology, specifically to a detachable toner cartridge assembly. Background Technology

[0002] With the continuous advancement of science and technology, printing technology has also made significant progress. Currently, technologies such as 3D printing and laser printing have become cutting-edge and widely used printing technologies in the industry. Among these printing technologies, the printer is the main equipment, and the toner cartridge is an indispensable consumable. The quality and performance of the toner cartridge directly affect the printer's printing quality and printing cost.

[0003] Inside the toner cartridge is usually an ink cartridge containing toner. When the printer receives print data, the laser beam generated by the laser emitter sweeps across the photosensitive drum, first forming a latent image composed of charges on the surface of the drum. When the latent image passes the toner cartridge, the toner is attracted to the drum, and the latent image is converted into a real image. Then, the printing paper is fed in, and the toner on the surface of the drum is transferred to the printing paper to form an image. After being heated at high temperature, the image is solidified on the printing paper.

[0004] There are many types of toner cartridges on the market. Most toner cartridges are detachable from the printer, allowing for easy replacement. However, since most toner cartridges have a sealed internal structure, the heat from the printer's operation causes the air inside to expand. Most toner cartridges lack components to temporarily store or buffer this expanding air, leading to increased internal pressure and potential damage to other components. Some cartridges have venting mechanisms, but these fail to maintain a proper seal. Others use one-way valves for venting, allowing gas to escape but preventing outside air from entering. As the temperature drops, the reduced air volume creates negative pressure inside the cartridge, which is detrimental to the stability of internal components. Therefore, we propose a detachable toner cartridge assembly. Utility Model Content

[0005] The purpose of this invention is to provide a detachable toner cartridge assembly to address the deficiencies mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A detachable toner cartridge assembly includes a toner cartridge body. A top cover is fixedly mounted on the top of the toner cartridge body by multiple fastening screws. An expansion and contraction assembly is provided on the top cover. The expansion and contraction assembly includes a vent pipe fixedly mounted on the top cover. The bottom of the vent pipe is connected to the interior of the toner cartridge body. A vent box is fixedly mounted on the top of the vent pipe. An annular inner ring is fixedly mounted on the inner wall of the vent box. Two symmetrical fixing rings are provided above the inner ring. The fixing rings are annular. A side fixing sticker is fixedly mounted between the two fixing rings. An elastic membrane is fixedly mounted on the inner annular side of the side fixing sticker. A rubber sealing gasket is fixedly mounted on the bottom surface of the lower fixing ring. The rubber sealing gasket is adhered and fixed to the upper surface of the inner ring.

[0008] Preferably, the ventilation box is provided with a ventilation chamber, and the inner ring is fixedly installed on the cavity wall of the ventilation chamber.

[0009] Preferably, a plurality of heat-conducting protrusions are fixedly installed on the annular side of the vent pipe, and the rear ends of the heat-conducting protrusions extend to the inner side of the vent pipe.

[0010] Preferably, a plurality of guide protrusions are fixedly installed on the top surface of the drum body, and a plurality of guide holes are provided on the top cover. The guide protrusions are located in the corresponding guide holes and are inserted into the guide holes.

[0011] Preferably, the guide protrusion is cylindrical, and the size of the guide protrusion is adapted to the size of the guide hole.

[0012] Preferably, a toner cartridge is fixedly installed on the inner wall of the drum body, and the end of the toner cartridge protrudes from the side plate of the drum body.

[0013] Preferably, the toner cartridge has an inner groove on its side, and the rear wall of the inner groove has a toner filling hole that communicates with the inside of the toner cartridge.

[0014] Preferably, the groove wall of the inner groove is provided with a first inclined surface, which is inclined at 30° to 60° toward the toner adding hole.

[0015] Preferably, a sealing cap is snapped into the inner groove, and a second inclined surface is provided on the side of the sealing cap near the inner groove. The second inclined surface and the first inclined surface fit together. A sealing plug is fixedly installed at the center position of the side of the sealing cap near the inner groove, and the sealing plug is inserted into the toner adding hole.

[0016] Preferably, an outer limiting ring concentrically arranged with the inner groove is fixedly installed on the side of the toner cartridge, and a through hole communicating with the outside is provided at the annular part of the outer limiting ring.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model, through the designed expansion and contraction component, ensures that during use, as the pressure inside the toner cartridge increases, the elastic membrane can deform, allowing excess pressurized air to temporarily accumulate in the elastic membrane area. Subsequently, as the temperature decreases, the elastic membrane can return to its original shape, keeping the internal and external air pressure of the toner cartridge body consistent. This achieves the effect of ensuring consistent internal and external air pressure of the toner cartridge body and reducing damage to internal components.

[0019] 2. The present invention, through the setting of the inner groove and the toner filling hole, makes it easy to remove the sealing plug before adding toner. The setting of the first inclined surface makes it easier for toner to enter from the toner filling hole. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is one of the partial structural schematic diagrams of this utility model;

[0023] Figure 4 This is a second schematic diagram of a partial structure of this utility model;

[0024] Figure 5 This is an exploded structural diagram of the expansion and contraction component of this utility model;

[0025] Figure 6 This is a partial structural schematic diagram of the expansion and contraction component of this utility model;

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Drum unit; 10. Toner cartridge; 11. Inner groove; 12. Toner refill hole; 13. First inclined surface; 14. Outer limiting ring; 141. Through hole; 15. Sealing cap; 151. Second inclined surface; 16. Sealing plug; 17. Guide protrusion;

[0028] 2. Top cover; 20. Guide hole;

[0029] 3. Expansion and contraction assembly; 30. Vent box; 301. Vent chamber; 31. Inner ring; 32. Vent tube; 33. Heat-conducting protrusion; 34. Fixing ring; 35. Side fixing sticker; 351. Elastic membrane; 36. Rubber sealing gasket. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-6 This utility model provides a technical solution: a detachable toner cartridge assembly, including a toner cartridge body 1, and a top cover 2 fixedly installed on the top of the toner cartridge body 1 by multiple fastening screws, so that the top cover 2 can be removed, which facilitates the maintenance of internal components and other operations, thus achieving the effect of detachability.

[0032] Specifically, the top cover 2 is provided with an expansion and contraction assembly 3, which includes a vent pipe 32 fixedly installed on the top cover 2. The bottom of the vent pipe 32 is connected to the inside of the drum body 1. A vent box 30 is fixedly installed at the top of the vent pipe 32. An inner ring 31 is fixedly installed on the inner wall of the vent box 30. Two symmetrical fixing rings 34 are provided above the inner ring 31. The fixing rings 34 are annular. A side fixing sticker 35 is fixedly installed between the two fixing rings 34. An elastic membrane 351 is integrally formed on the inner annular side of the side fixing sticker 35. The elastic membrane 351 can be made of rubber material to make it elastic. A rubber sealing gasket 36 is fixedly installed on the bottom surface of the lower fixing ring 34. The rubber sealing gasket 36 is adhered and fixed to the upper surface of the inner ring 31. This allows the elastic change of the elastic membrane 351 to keep the air pressure inside the drum body 1 consistent, further ensuring that the internal and external air pressures of the drum body 1 are consistent and avoiding the impact of high or negative pressure on the stability of internal components.

[0033] In this embodiment, a ventilation chamber 301 is provided inside the ventilation box 30, and an inner ring 31 is fixedly installed on the cavity wall of the ventilation chamber 301; a plurality of heat-conducting protrusions 33 are fixedly installed on the annular side of the ventilation pipe 32, and the rear end of the heat-conducting protrusions 33 extends to the inner side of the ventilation pipe 32, so that heat conduction can be performed using the heat-conducting protrusions 33.

[0034] Specifically, multiple guide protrusions 17 are fixedly installed on the top surface of the toner cartridge body 1, and multiple guide holes 20 are provided on the top cover 2. The guide protrusions 17 are located in the corresponding guide holes 20 and are inserted and matched with the guide holes 20. The guide protrusions 17 are cylindrical, and the size of the guide protrusions 17 is adapted to the size of the guide holes 20, so as to guide the fixed installation of the top cover 2.

[0035] Furthermore, a toner cartridge 10 is fixedly installed on the inner wall of the drum body 1. The end of the toner cartridge 10 protrudes from the side plate of the drum body 1. The toner cartridge 10 is used to hold toner. An inner groove 11 is provided on the side of the toner cartridge 10. A toner filling hole 12 communicating with the inside of the toner cartridge 10 is provided on the rear side wall of the inner groove 11. The toner filling hole 12 is used for adding toner.

[0036] In addition, a first inclined surface 13 is provided on the groove wall of the inner groove 11. The first inclined surface 13 is inclined at 30°~60° towards the toner adding hole 12, which makes toner adding smoother and facilitates the toner entering the toner box 10 along the first inclined surface 13.

[0037] It is worth noting that a sealing cap 15 is snapped into the inner groove 11. A second inclined surface 151 is provided on the side of the sealing cap 15 near the inner groove 11. The second inclined surface 151 fits against the first inclined surface 13. A sealing plug 16 is fixedly installed at the center of the side of the sealing cap 15 near the inner groove 11. The sealing plug 16 is inserted into the toner filling hole 12 to perform the sealing operation.

[0038] It is worth noting that an outer limiting ring 14 is fixedly installed on the side of the toner cartridge 10, which is concentrically arranged with the inner groove 11. The annular part of the outer limiting ring 14 is provided with a through hole 141 that communicates with the outside, so that the sealing cover 15 can be opened along the through hole 141.

[0039] When using the detachable toner cartridge assembly of this utility model, the sealing cover 15 is opened along the through hole 141. At this time, toner can be added into the toner cartridge 10 along the inner groove 11. After adding toner, the sealing cover 15 and the sealing plug 16 are inserted into the inner groove 11 and the toner adding hole 12. When the air inside the toner cartridge body 1 is heated and expands, the elastic membrane 351 can deform and bulge outward. When the toner cartridge body 1 cools down, the elastic membrane 351 can return to its original shape. At this time, the air pressure inside the toner cartridge body 1 can be kept consistent.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A detachable toner cartridge assembly, comprising a toner cartridge body (1), characterized in that: The top of the toner cartridge body (1) is fixedly mounted with a top cover (2) by multiple fastening screws. An expansion and contraction assembly (3) is provided on the top cover (2). The expansion and contraction assembly (3) includes a vent pipe (32) fixedly mounted on the top cover (2). The bottom of the vent pipe (32) is connected to the interior of the toner cartridge body (1). A vent box (30) is fixedly mounted on the top of the vent pipe (32). An annular inner ring (31) is fixedly mounted on the inner wall of the vent box (30). Two symmetrical fixing rings (34) are provided above the inner ring (31). The fixing rings (34) are annular. A side fixing sticker (35) is fixedly installed between the two fixing rings (34). An elastic membrane (351) is fixedly installed on the inner annular side of the side fixing sticker (35). A rubber sealing gasket (36) is fixedly installed on the bottom surface of the lower fixing ring (34). The rubber sealing gasket (36) is adhered and fixed to the upper surface of the inner ring (31).

2. The detachable toner cartridge assembly according to claim 1, characterized in that: The ventilation box (30) is provided with a ventilation chamber (301), and the inner ring (31) is fixedly installed on the cavity wall of the ventilation chamber (301).

3. The detachable toner cartridge assembly according to claim 1, characterized in that: A plurality of heat-conducting protrusions (33) are fixedly installed on the annular side of the vent pipe (32), and the rear end of the heat-conducting protrusions (33) extends to the inner side of the vent pipe (32).

4. The detachable toner cartridge assembly according to claim 1, characterized in that: Multiple guide protrusions (17) are fixedly installed on the top surface of the drum body (1), and multiple guide holes (20) are provided on the top cover (2). The guide protrusions (17) are located in the corresponding guide holes (20) and are inserted into the guide holes (20).

5. The detachable toner cartridge assembly according to claim 4, characterized in that: The guide protrusion (17) is cylindrical, and the size of the guide protrusion (17) is adapted to the size of the guide hole (20).

6. The detachable toner cartridge assembly according to claim 1, characterized in that: A toner cartridge (10) is fixedly installed on the inner wall of the drum body (1), and the end of the toner cartridge (10) protrudes from the side plate of the drum body (1).

7. The detachable toner cartridge assembly according to claim 6, characterized in that: The toner cartridge (10) has an inner groove (11) on its side, and the rear side wall of the inner groove (11) has a toner filling hole (12) that communicates with the inside of the toner cartridge (10).

8. The detachable toner cartridge assembly according to claim 7, characterized in that: The inner groove (11) has a first inclined surface (13) on its groove wall. The first inclined surface (13) is inclined at 30°~60° toward the toner adding hole (12).

9. The detachable toner cartridge assembly according to claim 8, characterized in that: A sealing cap (15) is snapped into the inner groove (11). A second inclined surface (151) is provided on the side of the sealing cap (15) near the inner groove (11). The second inclined surface (151) and the first inclined surface (13) fit together. A sealing plug (16) is fixedly installed at the center of the side of the sealing cap (15) near the inner groove (11). The sealing plug (16) is inserted into the toner adding hole (12).

10. The detachable toner cartridge assembly according to claim 9, characterized in that: An outer limiting ring (14) is fixedly installed on the side of the toner cartridge (10) and is concentrically arranged with the inner groove (11). A through hole (141) communicating with the outside is provided at the annular part of the outer limiting ring (14).

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