Toner cartridge powder bin sealing structure

Abstract

The utility model relates to the technical field of printing equipment accessories, in particular to a toner cartridge powder bin sealing structure which comprises a toner cartridge body, a powder bin is fixedly installed on the toner cartridge body, an annular threaded groove is formed in the end portion of the powder bin, and a material pipe communicated with the interior of the powder bin is fixedly installed on the groove wall of the annular threaded groove. A circular truncated cone plug is fixedly installed on the inner wall of the threaded sleeve and matched with the material pipe in an inserted mode, a center exhaust pipe is arranged at the center of the circular truncated cone plug, and a breathable ink blocking net is fixedly installed on the inner wall of the pipe body of the side, close to the interior of the powder bin, of the center exhaust pipe. A circular truncated cone sleeve is fixedly installed on the inner wall of the center exhaust pipe, a plugging ball is arranged at the position of the circular truncated cone sleeve, and a tension spring is fixedly installed between the plugging ball and the first mesh plate. The exhaust valve has a good sealing effect, and meanwhile normal exhaust operation is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment accessories, in particular to a toner cartridge powder bin sealing structure. Background Art

[0002] As one of the core components of office equipment such as laser printers, copiers and fax machines, toner cartridges play a vital role in printing quality and efficiency. The toner cartridge is equipped with a powder hopper for holding toner. The end of the powder hopper is generally provided with an opening so that toner can be added from the opening. However, in the production, transportation and use of toner cartridges, the leakage of toner has always been a technical problem that needs to be solved.

[0003] Currently, in order to seal the opening and prevent toner leakage, a common method is to use a corresponding rubber sealing plug to seal the opening. Although the rubber sealing plug can achieve a certain anti-leakage effect after being inserted into the opening, the printing area of ​​the printer will generate a certain high temperature during use. When the temperature is transferred to the toner cartridge, the temperature inside the toner hopper will also rise. When the temperature rises, the internal air pressure increases, which can easily push the rubber sealing plug outward. After the rubber sealing plug is pushed outward, it can no longer continue to seal the opening and will still cause leakage, affecting its normal use and causing inconvenience to the user. In view of this, we have proposed a toner cartridge toner hopper sealing structure. Utility Model Content

[0004] The purpose of the present invention is to provide a toner cartridge powder bin sealing structure to solve the defects mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] The toner cartridge powder hopper sealing structure includes a toner cartridge body, a powder hopper is fixedly installed on the toner cartridge body, an annular threaded groove is provided at the end of the powder hopper, a material pipe connected to the interior of the powder hopper is fixedly installed on the groove wall of the annular threaded groove, a threaded sleeve is connected to the inner thread of the annular threaded groove, a conical plug is fixedly installed on the inner wall of the threaded sleeve, the conical plug is plugged into the material pipe, a central exhaust pipe is provided at the center of the conical plug, and a breathable ink blocking net is fixedly installed on the inner wall of the tube body on one side of the central exhaust pipe close to the interior of the powder hopper.

[0007] Preferably, an annular groove is provided in the threaded sleeve, and the frustum plug is fixedly installed at the center position of the rear side groove wall of the annular groove.

[0008] Preferably, the truncated cone plug is truncated cone-shaped, and a sealing disk is fixedly mounted on the rear end portion of the truncated cone plug, and the sealing disk is fixedly mounted on the rear side groove wall of the annular groove.

[0009] Preferably, a rubber sealing layer is provided on the surface of the truncated cone plug, and the thickness of the rubber sealing layer is between 0.2 mm and 0.6 mm.

[0010] Preferably, a knob is fixedly mounted on the outer end surface of the threaded sleeve, and the cross section of the knob is cross-shaped.

[0011] Preferably, a first mesh plate is fixedly mounted on the inner wall of the end tube body of the central exhaust pipe, and the first mesh plate abuts against the outer surface of the breathable ink-blocking net.

[0012] Preferably, a truncated cone sleeve is fixedly mounted on the inner wall of the central exhaust pipe, a sealing ball is provided at the position of the truncated cone sleeve, a tension spring is fixedly mounted between the sealing ball and the first mesh plate, and the tension spring passes through the center of the truncated cone sleeve.

[0013] Preferably, a guide sleeve is fixedly mounted on the upper surface of the first mesh plate, and the guide sleeve is sleeved on the outside of the tension spring.

[0014] Preferably, a sealing gasket is provided on the inner surface of the truncated cone sleeve, and a limit plate is fixedly installed on the pipe wall of the central exhaust pipe. The limit plate is located above the blocking ball, and the limit plate is provided with a plurality of vents connected to the outside world.

[0015] Preferably, a second mesh plate and a moisture-absorbing net are fixedly installed on the inner wall of the tube body at the outer end of the central exhaust pipe, and the moisture-absorbing net is located between the limiting plate and the second mesh plate. A thin tube connected to the interior of the central exhaust pipe is fixedly installed on the outer end of the central exhaust pipe, and an impurity blocking net is fixedly installed on the inner wall of the thin tube. The end of the thin tube extends to the knob position and is connected to the outside world.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model realizes the sealing operation by threading the threaded sleeve and the annular threaded groove, and plugging and matching the conical plug with the material pipe. The threaded connection of the threaded sleeve also avoids the situation in which the conical plug is pushed out due to excessive pressure in the powder bin, thereby achieving the effect of sealing and preventing leakage.

[0018] 2. The utility model sets a central exhaust pipe and cooperates with the sealing ball for sealing. When the pressure in the powder bin is too high, the sealing ball can be pushed open. At this time, the high-pressure gas in the powder bin can be discharged normally. In addition, the breathable ink-blocking net is set to prevent the toner from falling out during the ventilation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 This is one of the partial structural diagrams of the utility model;

[0022] Figure 4 This is the second schematic diagram of the partial structure of the utility model;

[0023] Figure 5 This is a cross-sectional view of the central exhaust pipe of the present invention;

[0024] Figure 6 This is a schematic structural diagram of the limit plate of the utility model;

[0025] The meaning of each number in the figure is:

[0026] 1. Toner cartridge body; 10. Powder hopper; 11. Annular thread groove; 12. Material tube;

[0027] 2. Threaded sleeve; 20. Annular groove; 21. Conical plug; 22. Sealing disk; 23. Rubber sealing layer; 24. Knob;

[0028] 3. Central exhaust pipe; 30. First mesh plate; 31. Breathable ink-blocking net; 32. Guide sleeve; 33. Tension spring; 34. Cone sleeve; 35. Sealing gasket; 36. Sealing ball; 37. Limiting plate; 371. Vent; 38. Second mesh plate; 381. Moisture-absorbing net; 39. Capillary tube; 391. Impurity-blocking net. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1-6 The utility model provides a technical solution: a toner cartridge powder silo sealing structure, comprising a toner cartridge body 1, a powder silo 10 fixedly mounted on the toner cartridge body 1, an annular threaded groove 11 provided at the end of the powder silo 10, a material pipe 12 connected to the interior of the powder silo 10 fixedly mounted on the groove wall of the annular threaded groove 11, the material pipe 12 being used to add corresponding toner into the powder silo 10;

[0031] Specifically, the annular thread groove 11 is threadedly connected to a threaded sleeve 2, and the threaded connection can prevent loosening; a conical plug 21 is fixedly installed on the inner wall of the threaded sleeve 2, and the conical plug 21 is plugged into the material tube 12 for sealing operation; a central exhaust pipe 3 is provided at the center position of the conical plug 21, and a breathable ink-blocking net 31 is fixedly installed on the inner wall of the tube body on one side of the central exhaust pipe 3 close to the inside of the powder bin 10, and the central exhaust pipe 3 is used for the discharge operation of the high-pressure gas in the powder bin 10.

[0032] In this embodiment, an annular groove 20 is provided in the threaded sleeve 2, and a conical plug 21 is fixedly installed at the center position of the rear side groove wall of the annular groove 20; the conical plug 21 is in the shape of a truncated cone, and a sealing disk 22 is fixedly installed at the rear end of the conical plug 21, and the sealing disk 22 is fixedly installed on the rear side groove wall of the annular groove 20, so that the structure between the conical plug 21 and the threaded sleeve 2 is more firm and stable.

[0033] Specifically, a rubber sealing layer 23 is provided on the surface of the truncated cone plug 21. The thickness of the rubber sealing layer 23 is between 0.2 mm and 0.6 mm. The rubber sealing layer 23 can be made of rubber material. The provision of the rubber sealing layer 23 can improve the sealing effect.

[0034] Furthermore, a knob 24 is fixedly mounted on the outer end surface of the threaded sleeve 2 . The cross section of the knob 24 is cross-shaped, so that the threaded sleeve 2 can be rotated more smoothly by rotating the knob 24 .

[0035] In addition, a first mesh plate 30 is fixedly installed on the inner wall of the end tube body of the central exhaust pipe 3. The first mesh plate 30 is against the outer surface of the breathable ink-blocking net 31, which plays a role in limiting and protecting the breathable ink-blocking net 31.

[0036] It is worth mentioning that a conical sleeve 34 is fixedly installed on the inner wall of the central exhaust pipe 3, a sealing ball 36 is provided at the position of the conical sleeve 34, and a tension spring 33 is fixedly installed between the sealing ball 36 and the first mesh plate 30. The tension spring 33 passes through the center of the conical sleeve 34 to further seal the toner and prevent external moisture from entering the powder bin 10 and causing the toner to become wet.

[0037] In this embodiment, a guide sleeve 32 is fixedly installed on the upper surface of the first mesh plate 30, and the guide sleeve 32 is sleeved on the outside of the tension spring 33 to prevent the tension spring 33 from being easily deformed; a sealing gasket 35 is provided on the inner surface of the cone sleeve 34, and a limiting plate 37 is fixedly installed on the pipe wall of the central exhaust pipe 3. The limiting plate 37 is located above the blocking ball 36, and a plurality of ventilation holes 371 connected to the outside world are provided on the limiting plate 37, which have the effect of limiting the upward movement distance of the blocking ball 36.

[0038] It is worth noting that a second mesh plate 38 and a moisture-absorbing net 381 are fixedly installed on the inner wall of the tube body at the outer end of the central exhaust pipe 3. The moisture-absorbing net 381 is used to absorb moisture entering the central exhaust pipe 3; the moisture-absorbing net 381 is located between the limit plate 37 and the second mesh plate 38. A thin tube 39 connected to the interior of the central exhaust pipe 3 is fixedly installed on the outer end of the central exhaust pipe 3. An impurity blocking net 391 is fixedly installed on the inner wall of the thin tube 39. The end of the thin tube 39 extends to the knob 24 and is connected to the outside world, so that the high-pressure gas in the powder bin 10 can be discharged outward along the central exhaust pipe 3 and the thin tube 39. At the same time, the impurity blocking net 391 can block the entry of external impurities.

[0039] When the toner cartridge powder bin sealing structure of the present invention is in use, the conical plug 21 is inserted into the material tube 12, and the threaded sleeve 2 is tightened in the annular threaded groove 11 to complete the sealing operation. When the powder bin 10 is under normal air pressure, the tension spring 33 pulls the sealing ball 36 against the sealing gasket 35 to perform a sealing operation to prevent external moisture from entering. When the pressure in the powder bin 10 increases, the gas pressure pushes the sealing ball 36 outward by a certain distance. At this time, the gas in the powder bin 10 can be discharged outward along the conical sleeve 34, the vent 371 and the capillary 39, and the toner is blocked on the inner side of the breathable ink-blocking net 31.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A toner cartridge powder bin sealing structure, comprising a toner cartridge body (1), characterized in that: A powder bin (10) is fixedly mounted on the toner cartridge body (1), an annular threaded groove (11) is provided at the end of the powder bin (10), a material pipe (12) connected to the interior of the powder bin (10) is fixedly mounted on the groove wall of the annular threaded groove (11), a threaded sleeve (2) is connected to the inner thread of the annular threaded groove (11), a conical plug (21) is fixedly mounted on the inner wall of the threaded sleeve (2), the conical plug (21) and the material pipe (12) are plugged in and fitted together, a central exhaust pipe (3) is provided at the center of the conical plug (21), and a breathable ink blocking net (31) is fixedly mounted on the inner wall of the tube body of the central exhaust pipe (3) on one side close to the interior of the powder bin (10).

2. The toner cartridge powder bin sealing structure according to claim 1, characterized in that: An annular groove (20) is provided in the threaded sleeve (2), and the truncated cone plug (21) is fixedly mounted at the center position of the rear side groove wall of the annular groove (20).

3. The toner cartridge powder bin sealing structure according to claim 2, characterized in that: The truncated cone plug (21) is truncated cone-shaped, and a sealing disk (22) is fixedly mounted on the rear end of the truncated cone plug (21). The sealing disk (22) is fixedly mounted on the rear side groove wall of the annular groove (20).

4. The toner cartridge powder bin sealing structure according to claim 3, characterized in that: A rubber sealing layer (23) is provided on the surface of the truncated cone plug (21), and the thickness of the rubber sealing layer (23) is between 0.2 mm and 0.6 mm.

5. The toner cartridge powder silo sealing structure according to claim 1, characterized in that: A knob (24) is fixedly mounted on the outer end surface of the threaded sleeve (2), and the cross section of the knob (24) is cross-shaped.

6. The toner cartridge powder bin sealing structure according to claim 5, characterized in that: A first mesh plate (30) is fixedly mounted on the inner wall of the end tube body of the central exhaust pipe (3), and the first mesh plate (30) abuts against the outer surface of the breathable ink-blocking net (31).

7. The toner cartridge powder bin sealing structure according to claim 6, characterized in that: A truncated cone sleeve (34) is fixedly mounted on the inner wall of the central exhaust pipe (3), a blocking ball (36) is provided at the position of the truncated cone sleeve (34), a tension spring (33) is fixedly mounted between the blocking ball (36) and the first mesh plate (30), and the tension spring (33) passes through the center of the truncated cone sleeve (34).

8. The toner cartridge powder bin sealing structure according to claim 7, characterized in that: A guide sleeve (32) is fixedly mounted on the upper surface of the first mesh plate (30), and the guide sleeve (32) is sleeved on the outside of the tension spring (33).

9. The toner cartridge powder bin sealing structure according to claim 8, characterized in that: A sealing gasket (35) is provided on the inner surface of the truncated cone sleeve (34), and a limiting plate (37) is fixedly installed on the wall of the central exhaust pipe (3). The limiting plate (37) is located above the blocking ball (36), and a plurality of vent holes (371) communicating with the outside are provided on the limiting plate (37).

10. The toner cartridge powder bin sealing structure according to claim 9, characterized in that: A second mesh plate (38) and a moisture-absorbing net (381) are fixedly mounted on the inner wall of the tube body at the outer end of the central exhaust pipe (3), and the moisture-absorbing net (381) is located between the limiting plate (37) and the second mesh plate (38). A thin tube (39) communicating with the interior of the central exhaust pipe (3) is fixedly mounted on the outer end of the central exhaust pipe (3), and an impurity blocking net (391) is fixedly mounted on the inner wall of the thin tube (39). The end of the thin tube (39) extends to the knob (24) and is in communication with the outside.

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