Toner cartridge convenient for powder filling

Abstract

The utility model relates to the technical field of selenium drums, in particular to a selenium drum convenient for powder filling. Comprising two sealing doors which are connected to a toner cartridge shell in a sliding manner; the two lead screws are rotationally connected into the mounting grooves; the hand wheel is rotationally connected to the toner cartridge shell; the two bevel gears are vertically meshed with each other and are fixedly connected to the inner end of the hand wheel rotating shaft and the end part of one of the screw rods respectively; the two transmission wheels are fixedly connected to the two lead screws respectively; and the transmission belt is wound between the two transmission wheels. According to the utility model, the sealing door is used for seamlessly sealing the powder inlet end, so that the powder filling operation is completely carried out in a controlled sealing channel, and no powdered ink escapes from beginning to end; the operation cleanliness can be greatly improved, the operation environment is protected, the powder filling process is safer, more convenient and more efficient, and the defects that in the prior art, leakage is serious, operation is tedious, and the environment is polluted are effectively overcome.

Description

Technical Field

[0001] This utility model relates to the field of toner cartridge technology, and in particular to a toner cartridge that is easy to refill. Background Technology

[0002] As a core consumable for laser printers, toner cartridges are typically refilled after their toner runs out to extend their lifespan and save costs and resources. The current mainstream refilling method involves connecting the toner bottle's outlet to the toner cartridge's refill port, then inverting the assembly, allowing gravity to force the toner from the bottle into the cartridge.

[0003] However, because the nominal capacity of commercially available toner bottles is usually designed to be larger than the standard single-fill volume of the drum cartridge, users typically do not, and do not need to, pour all the toner from the bottle into the drum during the refilling process. This means that when separating the toner bottle from the drum after refilling, the toner, no longer confined by the sealed space, is highly susceptible to leakage. Users must be extremely careful and maintain a smooth motion during this process to avoid leakage. Once leakage occurs, toner waste increases costs, causes environmental pollution, and presents cleaning difficulties. Utility Model Content

[0004] In view of the deficiencies of the prior art mentioned in the background, the present invention provides a toner cartridge that is easy to refill, ensuring a sealed and smooth refilling process, thereby achieving an easy and clean refilling experience.

[0005] The technical implementation scheme of this utility model is as follows: a toner cartridge that is easy to refill includes: a toner cartridge shell, a toner hopper, and a toner inlet end, with the toner inlet end located on the upper part of the toner hopper; the side wall of the toner cartridge shell has two parallel mounting grooves located on both sides of the inner port of the toner inlet end; it also includes: two sealing doors, which are slidably connected to the toner cartridge shell through the mounting grooves, closing the toner inlet end when closed and opening the toner inlet end when separated, the mating surfaces of the two sealing doors adopt a stepped staggered structure to achieve seamless sealing after closing; two lead screws, which are rotatably connected in the mounting grooves, with the threads at both ends of the lead screws having opposite directions of rotation, each sealing door meshing with the two lead screws, and corresponding to different thread segments of rotation; a handwheel, which is rotatably connected to the toner cartridge shell, with its rotating shaft extending into the toner hopper; two mutually perpendicular meshing bevel gears, which are respectively fixedly connected to the inner end of the handwheel rotating shaft and the end of one of the lead screws; two drive wheels, which are respectively fixedly connected to the two lead screws; and a drive belt, which is wound between the two drive wheels to achieve synchronous rotational transmission.

[0006] In a preferred embodiment of the present invention, the toner cartridge further includes: a baffle frame, wherein a mounting portion is provided inside the toner cartridge shell below the inner port of the toner inlet end, the baffle frame is slidably connected to the mounting portion, and the portions of the baffle frame that contact the sealing door on both sides are designed as inclined surfaces; and a spring, which is fixedly connected between the baffle frame and the mounting portion to provide a restoring elastic force for the baffle frame.

[0007] In a preferred embodiment of this utility model, the toner inlet is rotatably mounted on the drum shell, and a splined shaft is provided at its center. The drum also includes: a connecting frame, which is fixedly connected to the inner wall of the toner inlet; a threaded sleeve, which is slidably sleeved on the splined shaft and forms a threaded engagement with the connecting frame; and a cleaning blade, which is fixedly connected to the top of the threaded sleeve.

[0008] In a preferred embodiment of the present invention, the drum further includes: a cover, which is fixedly connected to the top of the outer port of the toner inlet, and the outer diameter of the cover is larger than the outer diameter of the toner inlet; the cover is made of elastic material so as to fit the bottle opening when the toner bottle is inserted.

[0009] In a preferred embodiment of the present invention, the toner cartridge further includes: a pin, which is slidably connected to the side wall of the toner inlet end, and two corresponding insertion holes are provided on the toner cartridge shell, the positions of which correspond to the two states of the cleaning blade being "not unfolded" and "unfolded" respectively. The pin and the insertion holes cooperate to lock the toner inlet end to prevent rotation.

[0010] In a preferred embodiment of the present invention, the drum further includes a rotating ring, which is rotatably mounted on the outer wall of the drum shell. After the toner bottle is connected to the toner inlet, the top surface of the bottle opening will contact the rotating ring.

[0011] In a preferred embodiment of the present invention, the drum further includes a flow divider plate, which is fixedly installed inside the toner hopper and located below the baffle frame, for guiding and dispersing the falling toner to both sides of the toner hopper.

[0012] Compared with the prior art, the present invention has the following advantages: The present invention uses a seamless sealing door to seal the toner inlet, so that the toner filling operation is completely placed in a controlled sealed channel, ensuring that no toner escapes from beginning to end; this not only greatly improves the cleanliness of the operation and protects the operating environment, but also makes the toner filling process safer, more convenient and efficient, effectively overcoming the defects of serious leakage, cumbersome operation and environmental pollution in the prior art. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a cross-sectional view showing the connection relationship of the internal components in this utility model.

[0015] Figure 3 This is a schematic diagram showing the positional relationship between the baffle, cleaning blade, and powder inlet end of this utility model.

[0016] The components in the attached diagram are labeled as follows: 1. Drum shell, 2. Toner hopper, 3. Lead screw, 4. Bevel gear, 5. Drive belt, 6. Drive wheel, 7. Handwheel, 8. Sealing door, 9. Baffle frame, 10. Spring, 11. Toner inlet end, 12. Threaded sleeve, 13. Connecting frame, 14. Cleaning blade, 15. Sealing sleeve, 16. Pin, 17. Rotating ring, 18. Diverter plate. Detailed Implementation

[0017] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0018] Example: A toner cartridge that is easy to refill, see [reference] Figures 1-3 The system includes: a drum housing 1, which houses the printing components; a toner cartridge 2, located inside the drum housing 1, used to store and supply toner to the printing components; and a toner inlet 11, located above the toner cartridge 2, serving as a channel for adding toner. The drum housing 1 has two parallel mounting grooves on either side of the inner port of the toner inlet 11. It also includes: two sealing doors 8, which slide on the drum housing 1 via these mounting grooves. When closed, they seal the toner inlet 11; when separated, they open the toner inlet 11. The mating surfaces of the two sealing doors 8 employ a stepped, staggered structure to achieve a seamless seal when closed. The system consists of two lead screws 3, which are rotatably installed in the aforementioned mounting slots. The threads at both ends of the lead screws 3 have opposite directions of rotation. Each sealing door 8 meshes with both lead screws 3 and corresponds to different thread sections with different directions of rotation. A handwheel 7 is rotatably installed on the toner cartridge shell 1, with its shaft extending into the toner hopper 2. Two mutually perpendicular meshing bevel gears 4 are fixedly installed on the inner end of the handwheel 7 shaft and the end of one of the lead screws 3, respectively. Two drive wheels 6 are fixedly installed on the two lead screws 3, respectively. A drive belt 5 is wound between the two drive wheels 6 to achieve synchronous rotational transmission.

[0019] Rotating the handwheel 7 drives the lead screw 3 to rotate via the bevel gear 4, and then the two lead screws 3 rotate synchronously in opposite directions via the transmission wheel 6 and the transmission belt 5. Driven by the threads with opposite directions at both ends of the lead screw 3, the two sealing gates 8 slide towards or in opposite directions along the mounting groove, thereby achieving stable closing or opening of the toner inlet end 11. When the sealing gates 8 are closed, their stepped staggered structure can ensure a seamless seal at the joint, preventing toner leakage.

[0020] Therefore, when refilling toner, first invert the drum unit so that its toner inlet 11 aligns with the toner bottle; then, turn the handwheel 7 to open the sealing door 8, and then rotate the entire assembly 180 degrees to invert the toner bottle, so that the toner inside can be injected into the toner compartment 2 through the opened toner inlet 11 under the action of gravity; after refilling, reverse the handwheel 7 to drive the sealing door 8 to re-close the toner inlet 11, and then rotate the entire assembly 180 degrees to make the toner bottle upright, so that the toner bottle can be safely and cleanly separated from the drum unit.

[0021] This toner cartridge uses a seamless sealing door 8 to seal the toner inlet 11, so that the toner filling operation is carried out entirely within a controlled, sealed channel, ensuring that no toner escapes from beginning to end. This not only greatly improves the cleanliness of the operation and protects the operating environment, but also makes the toner filling process safer, more convenient and efficient, effectively overcoming the shortcomings of existing technologies such as serious leakage, cumbersome operation and environmental pollution.

[0022] See Figures 2-3 The toner cartridge also includes: a baffle 9, which has a mounting part located inside the toner cartridge shell 1 and below the inner port of the toner inlet end 11. The baffle 9 is slidably mounted on the mounting part, and the parts on both sides that contact the sealing door 8 are designed as inclined surfaces; and a spring 10, which is fixedly mounted between the baffle 9 and the mounting part to provide a return spring force for the baffle 9.

[0023] When the control gate 8 closes the toner inlet 11, the moving gate 8 presses against the inclined surface of the baffle frame 9 from both sides, causing the baffle frame 9 to move downward against the force of the spring 10, thus making room for the gate 8 to move and ensuring that the gate 8 can move smoothly to the fully closed position. When it is necessary to open the toner inlet 11 and control the gate 8 to separate, the gate 8 disengages from the baffle frame 9, and the baffle frame 9 immediately returns to its original position under the push of the spring 10, so that it accurately covers the outer edge of the inner port of the toner inlet 11. This will form a physical barrier, which on the one hand guides the toner directly into the toner cartridge 2, and on the other hand effectively isolates the toner from the mounting groove of the gate 8, preventing the toner from entering the mounting groove and avoiding the toner from affecting the transmission between the lead screw 3 and the gate 8, so as to ensure the long-term operational reliability of this drum structure.

[0024] See Figures 1-3 The toner inlet end 11 is rotatably mounted on the drum shell 1, and a spline shaft is provided at its center. The drum also includes: a connecting frame 13, which is fixedly mounted on the inner wall of the toner inlet end 11; a threaded sleeve 12, which is slidably mounted on the spline shaft and forms a threaded engagement with the connecting frame 13; and a cleaning blade 14, which is fixedly mounted on the top of the threaded sleeve 12.

[0025] When the toner inlet 11 is rotated, the threaded sleeve 12 is limited by the spline shaft and cannot rotate circumferentially, but it generates a relative angular displacement with the rotating connecting frame 13. Therefore, under the threaded engagement with the connecting frame 13, this relative displacement will be converted into linear motion of the threaded sleeve 12 along the spline shaft, causing the cleaning blade 14 to extend upward. When the toner bottle is connected to the toner inlet 11, the extended cleaning blade 14 will enter the bottle opening simultaneously. When the toner bottle opening is blocked, by controlling the toner bottle to rotate relative to the toner inlet 11, the cleaning blade 14 can rotate and guide the bottle opening area, effectively handling the toner blockage and clumping, thereby ensuring a smooth and unobstructed toner filling process.

[0026] See Figures 1-3 This toner cartridge also includes: a cover 15, fixedly installed on the top of the outer port of the toner inlet end 11, with an outer diameter larger than that of the toner inlet end 11; it is made of elastic material, utilizing its deformation characteristics to form a tight fit with the bottle opening when the toner bottle is inserted, effectively improving the sealing of the toner filling process and further preventing toner leakage; and a pin 16, slidably installed on the side wall of the toner inlet end 11, with two corresponding insertion holes on the toner cartridge shell 1, the positions of which correspond to the "undeployed" and "deployed" states of the cleaning blade 14, respectively. When the toner inlet end 11 is rotated to adjust the cleaning blade 14 to the target position, the pin 16 is pushed to insert it into the corresponding insertion hole. This locks the toner inlet 11 to prevent it from rotating, allowing for separate control of the toner bottle's rotation for subsequent drainage operations. The rotating ring 17 is rotatably mounted on the outer wall of the drum shell 1. After the toner bottle aligns with the inlet 11, the top surface of the bottle opening will contact the rotating ring 17, making the rotation of the toner bottle easier and smoother. The diverter plate 18 is fixedly installed inside the toner hopper 2, located below the baffle frame 9. It guides and disperses the falling toner to both sides of the toner hopper 2, preventing toner from accumulating locally below the inlet, thereby improving the uniformity of toner distribution within the toner hopper 2 and enhancing print quality and toner hopper capacity utilization.

[0027] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A refillable toner cartridge, comprising: The drum unit comprises a drum shell (1), a toner hopper (2), and a toner inlet (11), with the toner inlet (11) located on the upper part of the toner hopper (2). The drum shell (1) is characterized by having two parallel mounting grooves on the inner wall of its sidewall, located on both sides of the inner port of the toner inlet (11). It also includes two sealing doors (8), which are slidably connected to the drum shell (1) via the mounting grooves. When closed, they seal the toner inlet (11), and when separated, they open the toner inlet (11). The mating surfaces of the two sealing doors (8) adopt a stepped, staggered structure to achieve seamless sealing after closure. Two lead screws (3) are rotatably connected to the mounting grooves. Inside, the threads at both ends of the lead screw (3) are opposite in direction. Each sealing door (8) meshes with two lead screws (3) and corresponds to different thread segments. The handwheel (7) is rotatably connected to the toner cartridge shell (1), and its shaft extends into the powder hopper (2). Two bevel gears (4) mesh perpendicularly to each other and are fixedly connected to the inner end of the handwheel (7) shaft and the end of one of the lead screws (3). Two drive wheels (6) are fixedly connected to the two lead screws (3). A drive belt (5) is wound between the two drive wheels (6) to achieve synchronous rotation transmission.

2. The toner cartridge for easy refilling as described in claim 1, characterized in that, The drum also includes: a baffle (9), which has an installation part located inside the drum shell (1) and below the inner port of the powder inlet end (11). The baffle (9) is slidably connected to the installation part, and the parts on both sides that contact the sealing door (8) are designed as inclined surfaces; and a spring (10), which is fixedly connected between the baffle (9) and the installation part to provide a reset elastic force for the baffle (9).

3. A toner cartridge for easy refilling as described in claim 1, characterized in that, The powder inlet end (11) is rotatably mounted on the drum shell (1), and a spline shaft is provided at its center. The drum also includes: a connecting frame (13), which is fixedly connected to the inner wall of the powder inlet end (11); a threaded sleeve (12), which is slidably sleeved on the spline shaft and forms a threaded engagement with the connecting frame (13); and a cleaning blade (14), which is fixedly connected to the top of the threaded sleeve (12).

4. A toner cartridge for easy refilling as described in claim 1, characterized in that, The drum also includes a cover (15), which is fixedly connected to the top of the outer port of the toner inlet (11), and its outer edge diameter is larger than that of the outer edge diameter of the toner inlet (11); it is made of elastic material so as to fit the bottle opening when the toner bottle is inserted.

5. A toner cartridge for easy refilling as described in claim 3, characterized in that, The drum also includes a pin (16), which is slidably connected to the side wall of the powder inlet end (11). Two insertion holes are provided on the drum shell (1), and their positions correspond to the two states of the cleaning blade (14) being "not unfolded" and "unfolded". The pin (16) cooperates with the insertion holes to lock the powder inlet end (11) from rotating.

6. A toner cartridge for easy refilling as described in claim 3, characterized in that, The drum also includes a rotating ring (17), which is rotatably mounted on the outer wall of the drum shell (1). After the toner bottle is connected to the toner inlet end (11), the top surface of the bottle opening will contact the rotating ring (17).

7. A toner cartridge for easy refilling as described in claim 1, characterized in that, The drum also includes a splitter plate (18), which is fixedly installed inside the toner compartment (2) and located below the baffle frame (9) to guide and disperse the falling toner to both sides of the toner compartment (2).

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