A toner cartridge structure facilitating toner cartridge powder filling

Abstract

The application is suitable for the technical field of toner, and provides a toner cartridge structure facilitating toner filling, comprising a toner cartridge mechanism and a toner cartridge body. The toner cartridge mechanism comprises a toner cartridge body, a toner filling piece threadedly connected to a toner filling port, and a clamping piece slidingly fitted to the toner filling piece; the toner cartridge body comprises a toner storage box and a conical discharge hopper at a discharge end thereof. The toner filling piece comprises an outer threaded tube threadedly connected to an inner threaded cylinder, a communication tube fixed to a top of the outer threaded tube, a protective cover fixed to an outer side of the communication tube, a flexible air bag arranged in the protective cover and fixed to the communication tube, and a flexible rubber sleeve ring fixed to an inner wall of the communication tube. The application enables the flexible air bag to expand to form a dynamic air seal by linkage driving of a piston compressing air, and simultaneously enables a clamping plate to automatically clamp the conical discharge hopper, so as to realize dynamic air seal of the flexible air bag and the flexible rubber sleeve ring and static seal protection of the annular sealing gasket, and linkage automatic clamping and positioning, and has the advantages of convenient operation and good leakage prevention effect.

Description

Technical Field

[0001] This invention relates to the field of toner cartridge technology, and more specifically, to a toner cartridge structure that facilitates toner refilling. Background Technology

[0002] Toner cartridges are core consumable components in imaging devices such as laser printers and copiers, containing toner (also known as carbon powder). As the number of printed pages increases, the toner in the cartridge gradually depletes, requiring periodic toner replenishment, also known as toner refilling.

[0003] Currently, existing toner cartridge refill structures on the market typically include the toner cartridge body and a separate toner bottle. The toner cartridge body has a refill port, which is generally sealed with a simple threaded cap, causing many inconveniences for users during the actual refilling process. The lack of an effective docking and sealing structure between the toner bottle's outlet and the drum's filling port makes them prone to misalignment during docking, causing toner to spill and fly around, affecting the cleanliness of the operating environment. At the same time, during the filling process, toner is prone to escaping or leaking out at the interface gaps when falling under gravity, resulting in poor sealing and toner waste. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a toner cartridge structure that can achieve all-round sealing of the toner filling channel through triple protection of a flexible rubber collar, a flexible airbag dynamic air seal, and an annular sealing gasket static seal, thereby reducing the risk of toner leakage and avoiding pollution to the surrounding working environment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A convenient toner cartridge structure includes a toner cartridge mechanism and a toner cartridge body. The toner cartridge mechanism includes a toner cartridge body, a toner filling component threadedly connected to the toner filling port of the toner cartridge body, and a clamping component slidably fitted on the toner filling component. The toner cartridge body includes a toner storage box, and the toner storage box has a conical discharge hopper at its discharge end. An internally threaded cylinder is connected inside the toner filling port of the toner cartridge body. The toner filling component includes an externally threaded tube threadedly connected to the internally threaded cylinder. A connecting tube is fixedly connected to the top of the externally threaded tube. A protective cover is sleeved and fixed above the externally threaded tube on the top of the connecting tube. A flexible airbag fixed to the connecting tube is provided inside the protective cover. A flexible rubber collar is fixed to the inner wall of the connecting tube below the protective cover.

[0006] The invention is further configured such that: an L-shaped tube extending into the outer periphery of the protective cover is connected to it, a guide tube is connected to the top of the L-shaped tube, a piston is vertically reciprocatingly sliding inside the L-shaped tube, a guide rod is fixedly fixed to the top of the piston and slidably fitted inside the guide tube, and a flexible corrugated sleeve fitted on the guide rod is fixed between the guide rod and the guide tube.

[0007] The present invention is further configured such that: a first hinge seat is fixed at the end of the guide rod, a hinge arm is hingedly fitted inside the first hinge seat, a U-shaped horizontal plate is fixed near the end of the outer peripheral side of the L-shaped tube, a guide horizontal rod is fixed inside the U-shaped horizontal plate, a second hinge seat is slidably fitted through the peripheral side of the guide horizontal rod and slidably fitted with the U-shaped horizontal plate, the second hinge seat is hingedly fitted with the hinge arm, and a first spring sleeved on the guide horizontal rod is fixed between the second hinge seat and the U-shaped horizontal plate.

[0008] The present invention is further configured such that: a baffle is fixed at the bottom of the second hinge seat below the U-shaped horizontal plate, an extension rod is fixed on one side of the baffle, a ball hinge seat is fixed at the end of the extension rod, and a rolling ball is hinged inside the ball hinge seat.

[0009] The present invention is further configured such that: a conical cover is fixed to the top of the external threaded tube, and two symmetrically arranged base plates are fixed to the outer periphery of the conical cover, and a cylindrical rod is fixed to the top of each of the two base plates.

[0010] The present invention is further configured such that: the clamping member is fixed with a conical positioning cover adapted to the conical discharge hopper; the outer peripheral side of the conical positioning cover is fixed with two lifting plates that are respectively slidably fitted onto the cylindrical rod; the bottom of each of the two lifting plates is fixed with a second spring that is respectively sleeved onto the two cylindrical rods; the bottom end of the second spring is fixedly connected to the top of the base plate.

[0011] The invention is further configured such that: two symmetrically arranged U-shaped side plates are fixed on the outer periphery of the conical positioning cover, and an inclined panel is provided on the inner wall of the U-shaped side plate, the inclined panel being in sliding cooperation with the rolling ball.

[0012] The invention is further configured such that: two symmetrically arranged irregularly shaped side plates are fixed on the outer periphery of the protective cover, and levers are fixed on both sides of the irregularly shaped side plates; limit grooves are opened through the tops of the two lifting plates, and L-shaped displacement plates are slidably fitted inside the two limit grooves; two symmetrically arranged lower side plates are fixed at the bottom of the L-shaped displacement plates, and oblique grooves that slidably fit with the levers are opened through the sides of the two lower side plates; clamping plates are fixed on one side of the two L-shaped displacement plates above the conical positioning cover.

[0013] The present invention is further configured such that: an annular sealing groove is provided on the side of the drum body and is coaxially arranged with the toner filling port of the drum body; when the toner filling port of the drum body is not filled, a sealing cap is threadedly sealed; and an annular sealing gasket adapted to the annular sealing groove is fixed on the top of the conical cover.

[0014] The advantages of this invention are: 1. This invention has a flexible airbag inside the protective cover, and the piston is driven by the downward action of the toner cartridge body to compress air, so that the flexible airbag expands under air pressure and fits tightly between the inner wall of the connecting pipe and the outer wall of the conical discharge hopper, forming a dynamic air-sealed structure around the toner filling channel. This sealing mechanism is automatically activated when the toner cartridge body is pressed down and automatically released when it is lifted up, effectively preventing toner from escaping upward or leaking outward during the toner filling process, and ensuring a clean operating environment.

[0015] This invention features a flexible rubber collar fixed to the inner wall of the connecting pipe below the protective cover, forming a contact-type elastic seal with the outer wall of the conical discharge hopper. Simultaneously, an annular sealing gasket is provided at the top of the conical cover, forming a bottom static seal with the annular sealing groove of the toner cartridge body under threaded locking pressure. Thus, through the triple protection of the flexible rubber collar, the dynamic air seal of the flexible airbag, and the static seal of the annular sealing gasket, the toner filling channel is fully sealed, reducing the risk of toner leakage, preventing it from being inhaled by the operator and harming their health, and also avoiding the pollution of the surrounding working environment by the scattered toner.

[0016] This invention incorporates a linkage structure including an irregularly shaped side plate, a lever, an L-shaped displacement plate, an inclined groove, and a clamping plate. During the pressing down of the toner cartridge body, the clamping plate is simultaneously driven to move inward, achieving automatic clamping and positioning of the outer wall of the conical discharge hopper of the toner cartridge body. This clamping action is completed in conjunction with the pressing operation, eliminating the need for additional steps. It effectively prevents the toner cartridge body from shifting or detaching due to vibration or the rebound of elastic elements during the toner filling process, ensuring the continuity and stability of the toner filling process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a toner cartridge structure for convenient toner refilling according to the present invention.

[0018] Figure 2 This is a schematic diagram of the toner cartridge mechanism of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the toner cartridge body of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of the toner cartridge body of the present invention.

[0021] Figure 5 This is a schematic diagram of the powder filling component of the present invention.

[0022] Figure 6 This is a left view of the powder filling component of the present invention.

[0023] Figure 7 This is a schematic diagram of the cross-sectional structure of the powder filling component of the present invention.

[0024] Figure 8 For the present invention Figure 7 A magnified structural diagram.

[0025] Figure 9 This is a schematic diagram of the structure of the clamping component of the present invention.

[0026] In the diagram: 1. Toner cartridge mechanism; 2. Toner cartridge body; 3. Toner cartridge body; 4. Toner filling component; 5. Clamping component; 201. Toner storage box; 202. Conical discharge hopper; 301. Internally threaded cylinder; 302. Annular sealing groove; 401. Externally threaded tube; 402. Connecting tube; 403. Protective cover; 404. Flexible airbag; 405. Flexible rubber collar; 406. L-shaped tube; 407. Guide tube; 408. Piston; 409. Guide rod; 410. Annular sealing gasket; 411. First hinge seat; 412. Hinge arm; 413. U-shaped... 414. Horizontal plate; 415. Guide crossbar; 416. Second hinge seat; 417. First spring; 418. Baffle; 419. Extension rod; 420. Ball hinge seat; 421. Rolling ball; 422. Conical cover; 423. Base plate; 424. Cylindrical rod; 425. Irregular side plate; 501. Toggle lever; 502. Conical positioning cover; 503. Lifting plate; 504. Second spring; 505. U-shaped side plate; 506. Slanted panel; 507. Limiting groove; 508. L-shaped displacement plate; 509. Lower side plate; 510. Slanted groove; 511. Clamping plate. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0030] Example 1, please refer to Figures 1-9 The present invention provides the following technical solution: a toner cartridge structure for convenient toner refilling, specifically including a toner cartridge mechanism 1 and a toner cartridge body 2. The toner cartridge mechanism 1 includes a toner cartridge body 3, a toner filling component 4 threadedly connected to the toner filling port of the toner cartridge body 3, and a clamping component 5 slidably fitted on the toner filling component 4; the toner cartridge body 2 includes a toner storage box 201, and a conical discharge hopper 202 is provided at the discharge end of the toner storage box 201; an internal threaded cylinder 301 is connected inside the toner filling port of the toner cartridge body 3; the toner filling component 4 includes an external threaded tube 401 threadedly connected to the internal threaded tube 301, a connecting tube 402 is fixedly connected to the top of the external threaded tube 401, a protective cover 403 is sleeved and fixedly fitted above the external threaded tube 401 at the top of the connecting tube 402, a flexible airbag 404 fixed to the connecting tube 402 is provided inside the protective cover 403, and a flexible rubber collar 405 is fixedly fixed to the inner wall of the connecting tube 402 below the protective cover 403; Furthermore, an L-shaped tube 406 extending into the outer periphery of the protective cover 403 is connected to the outer side of the cover. A guide tube 407 is connected to the top of the L-shaped tube 406. A piston 408 is vertically and reciprocally sliding inside the L-shaped tube 406. A guide rod 409, which is slidably fitted inside the guide tube 407, is fixed to the top of the piston 408. A flexible corrugated sleeve is fixed between the guide rod 409 and the guide tube 407 and fits onto the guide rod 409. (This flexible corrugated sleeve is used to dynamically seal the opening of the guide tube 407 when the guide rod 409 reciprocates, preventing external dust.) (Toner spilled from the part enters the interior of the L-shaped tube 406, thus affecting the airtightness of the reciprocating motion of the piston 408); a first hinge seat 411 is fixed to the end of the guide rod 409, and a hinge arm 412 is hinged inside the first hinge seat 411; a U-shaped horizontal plate 413 is fixed to the outer periphery of the L-shaped tube 406 near the end, and a guide horizontal rod 414 is fixed inside the U-shaped horizontal plate 413; a second hinge seat 415 is slidably fitted through the periphery of the guide horizontal rod 414 and slidably fitted with the U-shaped horizontal plate 413; the second hinge seat 415 is hinged to the hinge arm 412, and the second hinge seat 415 is hinged to the U-shaped horizontal plate 413. A first spring 416 is fixed between the U-shaped horizontal plates 413 and sleeved on the guide crossbar 414; a baffle 417 is fixed at the bottom of the second hinge seat 415 below the U-shaped horizontal plates 413, an extension rod 418 is fixed on one side of the baffle 417, a ball joint seat 419 is fixed at the end of the extension rod 418, and a rolling ball 420 is ball-jointed inside the ball joint seat 419; a conical cover 421 is fixed at the top of the external threaded tube 401, and two symmetrically arranged base plates 422 are fixed on the outer periphery of the conical cover 421, with cylindrical rods 423 fixed at the top of each of the two base plates 422; the clamping member 5 is fixed. A conical positioning cover 501 is adapted to the conical discharge hopper 202. Two lifting plates 502 are fixed on the outer periphery of the conical positioning cover 501 and are respectively slidably fitted on the cylindrical rod 423. The bottom of each lifting plate 502 is fixed with a second spring 503 respectively sleeved on the two cylindrical rods 423. The bottom end of the second spring 503 is fixedly connected to the top of the bottom plate 422. Two symmetrically arranged U-shaped side plates 504 are fixed on the outer periphery of the conical positioning cover 501. The inner wall of the U-shaped side plate 504 is provided with an inclined plate 505, which is slidably fitted with the rolling ball 420.

[0031] The specific application of this embodiment is as follows: When it is necessary to refill the toner cartridge body 3, remove the original sealing cap at the toner filling port of the toner cartridge body 3 to expose the internally threaded cylinder 301 coaxially arranged inside the toner filling port; and hold the toner filling component 4 as a whole, align the bottom external threaded tube 401 with the internal threaded cylinder 301, rotate the toner filling component 4 to make the external threaded tube 401 and the internal threaded cylinder 301 threadedly locked, and complete the detachable fixed assembly of the toner filling component 4 and the toner cartridge body 3. After assembly, the annular sealing gasket 410 at the bottom of the conical cover 421 is inserted into the annular sealing groove 302 of the drum body 3. The static seal at the bottom of the filling port is achieved by the tightening pressure of the threads, preventing toner from leaking outward from the thread gaps during filling or before filling. At this time, the connecting pipe 402 extends downward to the toner storage cavity inside the drum body 3. A protective cover 403 is installed on the outer side of the upper section of the connecting pipe 402. A flexible airbag 404 is pre-installed inside the protective cover 403. A flexible rubber collar 405 is fixed to the lower section of the inner wall of the connecting pipe 402, forming the main channel for toner delivery and the inner sealing structure, preventing toner leakage from the toner storage box 201 during filling.

[0032] During the later toner loading process, the conical discharge hopper 202 of the toner cartridge body 2 is aligned with the conical positioning cover 501 of the clamping piece 5 and pressed down. The lifting plate 502 slides down along the cylindrical rod 423 and compresses the second spring 503, which simultaneously drives the U-shaped side plate 504 to move down. The inclined plate 505 presses down and squeezes the rolling ball 420, thereby activating the entire airtight linkage.

[0033] Initially, when the toner cartridge body 2 is not being pressed down for toner filling, its first spring 416 is compressed. At this time, the lower part of the inclined plate 505 is in contact with the surface of the rolling ball 420. Later, as the toner cartridge body 2 is pressed down, the rolling ball 420, which is in contact with the lower part of the inclined plate 505, begins to slide from the lower part to the higher part. During the sliding process, the ball joint seat 419 drives the extension rod 418 and the baffle 417 to move horizontally away from the L-shaped tube 406. At this time, the baffle 417 overcomes the elastic resistance of the first spring 416 and drives the second hinge seat 415 to slide along the guide bar 414 away from the L-shaped tube 406. During the horizontal sliding process, the first hinge seat 411 and the guide rod 409 are pulled down along the guide tube 407 by the hinge arm 412. The guide rod 409 drives the piston 408 to move vertically downward along the inside of the L-shaped tube 406. During this process, the effective exhaust volume of the piston 408 in the L-shaped tube 406 is set to be greater than the volume required for the flexible airbag 404 to expand to a tight fit. This compresses the air inside the L-shaped tube 406 and sends the compressed air through the L-shaped tube 406 into the flexible airbag 404 inside the protective cover 403. The airbag expands fully due to the increased air pressure, overcoming its own elastic deformation, and fits tightly between the inner wall of the connecting pipe 402 and the outer wall of the conical discharge hopper 202, thereby forming a dynamic airtight structure around the powder filling channel. Effectively prevents toner from escaping upwards or leaking outwards during the filling process; when the toner cartridge body 2 continues to be pressed down until the conical discharge hopper 202 and the conical positioning cover 501 are fully engaged, the clamping member 5 descends to its lowest position, and relies on the gravity of the toner cartridge body 2 itself to keep the rolling ball 420 in contact with the highest point of the inclined plate 505, thus temporarily limiting and maintaining the toner cartridge body 2, ensuring that the toner cartridge body 2 will not accidentally detach due to the rebound of the second spring 503 during the filling process; at the same time, during the downward pressing of the toner cartridge body 2, the toner in the toner storage box 201 falls smoothly into the drum body 3 through the conical discharge hopper 202, the conical positioning cover 501, the connecting pipe 402, and the external threaded pipe 401 under the action of gravity. The internal toner storage chamber completes the rapid toner filling operation; after filling, the toner cartridge body 2 is lifted upward, and the lifting plate 502 slides upward along the cylindrical rod 423 under the action of the reset elastic force of the second spring 503. The U-shaped side plate 504 moves upward simultaneously, and the inclined plate 505 moves upward and squeezes the rolling ball 420 in the opposite direction. The rolling ball 420 pushes the second hinge seat 415 to slide horizontally in the opposite direction through the extension rod 418. The first spring 416 begins to be gradually compressed. The second hinge seat 415 pushes the guide rod 409 and the piston 408 to move vertically upward along the L-shaped tube 406 through the hinge arm 412. A negative pressure is generated inside the L-shaped tube 406, which draws back the gas inside the flexible airbag 404. The flexible airbag 404 contracts and resets, releasing the sealing and pressing on the inner wall of the connecting tube 402.Continue lifting the toner cartridge body 2 until the conical discharge hopper 202 completely disengages from the conical positioning cover 501. Then, rotate the filling component 4 in the opposite direction to unscrew the external threaded tube 401 from the internal threaded cylinder 301. Remove the filling component 4 and reconnect the sealing cap to the filling port, thus completing the entire toner cartridge filling process. The entire operation requires no external tools, and there is no toner leakage during filling. The seal is reliable, and disassembly and assembly are convenient, improving the ease and cleanliness of toner cartridge filling.

[0034] Example 2, please refer to Figures 1-9 This second embodiment is an improvement on the first embodiment as follows: Specifically, two symmetrically arranged irregularly shaped side plates 424 are fixed to the outer periphery of the protective cover 403, and levers 425 are fixed to the opposite sides of the irregularly shaped side plates 424; limit grooves 506 are opened through the tops of the two lifting plates 502, and L-shaped displacement plates 507 are slidably fitted inside the two limit grooves 506; two symmetrically arranged lower side plates 508 are fixed to the bottom of the L-shaped displacement plates 507, and the sides of the two lower side plates 508 are... All have a through-hole slanted groove 509 that slides with the lever 425. Two L-shaped displacement plates 507 are fixed with clamping plates 510 on opposite sides above the conical positioning cover 501. The side of the drum body 3 has an annular sealing groove 302 that is coaxial with the filling port of the drum body 3. When the filling port of the drum body 3 is not filled, it is threadedly sealed with a sealing cap. The top of the conical cover 421 is fixed with an annular sealing gasket 410 that matches the annular sealing groove 302.

[0035] The specific application of this second embodiment is as follows: Based on the first embodiment, this second embodiment further optimizes the positioning and locking mechanism of the toner cartridge body 2 and the clamping component 5 during the toner filling process, and adds an auxiliary clamping structure to improve the stability and convenience of the toner filling operation. The specific application process is as follows: First, before performing the toner filling operation, it is necessary to ensure that the toner filling port of the drum body 3 is cleaned, and the toner filling component 4 is threadedly locked to the internal threaded cylinder 301 via the external threaded tube 401. At this time, the annular sealing gasket 410 on the top of the conical cover 421 is tightly pressed into the annular sealing groove 302 on the side of the drum body 3, forming a static seal at the bottom, effectively preventing toner leakage from the threaded connection gap.

[0036] During the continued downward pressing of the toner cartridge body 2, in addition to activating the airtight linkage in Embodiment 1, during the actual clamping process, when the lifting plate 502 moves downward, the irregular side plate 424 fixed to the outer peripheral side of the protective cover 403 and its lever 425 remain stationary, while the L-shaped displacement plate 507 slidingly engaged in the limiting groove 506 at the top of the lifting plate 502 moves downward accordingly. Since the lower side plate 508 at the bottom of the L-shaped displacement plate 507 has an inclined groove 509, and the lever 425 slides in the inclined groove 509, during the sliding process, in order to prevent mechanical self-locking during pressing, the angle between the center line of the inclined groove 509 and the horizontal plane must be greater than the equivalent friction angle of the lever 425 sliding in the groove. Therefore, during the downward movement, the inclined groove 509 overcomes the frictional resistance and generates a lateral displacement component relative to the lever 425, thereby forcing the L-shaped displacement plate 507 to move horizontally toward the central axis of the conical positioning cover 501 under the restriction of the limiting groove 506. Finally, the clamping plates 510 fixed on one side of the two L-shaped displacement plates 507 move inward synchronously, clamping the outer wall of the conical discharge hopper 202 of the toner cartridge body 2 from both sides, thereby achieving radial auxiliary positioning and clamping of the toner cartridge body 2.

[0037] When the toner cartridge body 2 is pressed down to its lowest position, the conical discharge hopper 202 and the conical positioning cover 501 are fully engaged. The rolling ball 420 slides to the highest point of the inclined plate 505 and remains in a limited position. At the same time, the clamping plate 510 firmly clamps the outer wall of the toner cartridge body 2, preventing it from shifting or detaching during the toner filling process due to the elastic preload of the second spring 503 or operational vibrations. At this time, under the action of gravity, the toner in the toner storage box 201 flows smoothly into the drum body 3 through the conical discharge hopper 202, the conical positioning cover 501, the connecting pipe 402, and the external threaded pipe 401, completing a fast, stable, and leak-free toner filling operation.

[0038] To ensure the smooth operation of the aforementioned linkage reset mechanism, the total preload and deformation recovery force of the second spring 503 must be greater than the maximum compression resistance of the first spring 416, the air pressure suction resistance of the piston 408 moving upward, and the sum of the friction forces of each transmission joint. This mechanical configuration ensures that after toner filling, when the operator lifts the toner cartridge body 2, the lifting plate 502 can slide upward along the cylindrical rod 423 under the action of the reset force of the second spring 503, overcoming the overall system resistance. Simultaneously, it drives the U-shaped side plate 504 and the inclined plate 505 to move upward. The rolling ball 420 slides from the high position to the low position on the inclined plane, the first spring 416 is compressed again, pushing the second hinge seat 415 and the baffle 417 to reset. Through the hinge arm 412, the guide rod 409 and the piston 408 move upward, generating negative pressure in the L-shaped tube 406, drawing back the gas from the flexible airbag 404, causing the airbag to contract and release the seal. Simultaneously, as the lifting plate 502 moves upward, the L-shaped displacement plate 507 moves upward as well, and the inclined groove 509 slides in the opposite direction to the lever 425, forcing the L-shaped displacement plate 507 to move horizontally outward along the limiting groove 506, causing the clamping plate 510 to disengage from the toner cartridge body 2. After the conical discharge hopper 202 is completely disengaged from the conical positioning cover 501, the operator can easily remove the toner cartridge body 2 and rotate the filling component 4 in the opposite direction to remove it from the drum body 3. Finally, the sealing cap is re-threaded and sealed to the filling port, completing the entire filling process. This embodiment 2, by adding a linkage structure such as the irregular side plate 424, lever 425, L-shaped displacement plate 507, inclined groove 509, and clamping plate 510, realizes the automatic clamping and sealing synchronous action when the toner cartridge body 2 is pressed down for filling, without the need for additional operation steps, improving the stability and ease of operation of the filling process, and further reducing the risk of toner leakage.

[0039] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0040] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0041] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0043] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A toner cartridge structure for convenient toner refilling, comprising a toner cartridge mechanism (1) and a toner cartridge body (2), characterized in that: The toner cartridge mechanism (1) includes a toner cartridge body (3), a toner filling component (4) threadedly connected to the toner filling port of the toner cartridge body (3), and a clamping component (5) slidably fitted on the toner filling component (4). The toner cartridge body (2) includes a toner storage box (201), and the toner storage box (201) is provided with a conical discharge hopper (202) at the discharge end. The inner threaded cylinder (301) is connected to the powder filling port of the toner cartridge body (3). The powder filling component (4) includes an external threaded tube (401) threaded onto an internal threaded cylinder (301). A connecting tube (402) is fixedly connected to the top of the external threaded tube (401). A protective cover (403) is sleeved and fixed above the external threaded tube (401) at the top of the connecting tube (402). A flexible airbag (404) fixed to the connecting tube (402) is provided inside the protective cover (403). A flexible rubber collar (405) is fixed to the inner wall of the connecting tube (402) below the protective cover (403).

2. The toner cartridge structure for convenient toner refilling according to claim 1, characterized in that: The outer periphery of the protective cover (403) is connected to an L-shaped tube (406) extending into it. The top of the L-shaped tube (406) is connected to a guide tube (407). A piston (408) is vertically and reciprocally sliding inside the L-shaped tube (406). A guide rod (409) is fixed on the top of the piston (408) and slidingly fitted inside the guide tube (407). A flexible corrugated sleeve is fixed between the guide rod (409) and the guide tube (407) and fitted onto the guide rod (409).

3. The toner cartridge structure for convenient toner refilling according to claim 2, characterized in that: The guide rod (409) has a first hinge seat (411) fixed at its end. The first hinge seat (411) has a hinge arm (412) hinged inside. The L-shaped tube (406) has a U-shaped horizontal plate (413) fixed near its end on its outer periphery. The U-shaped horizontal plate (413) has a guide rod (414) fixed inside. The guide rod (414) has a second hinge seat (415) that slides through and slides with the U-shaped horizontal plate (413) on its periphery. The second hinge seat (415) is hinged with the hinge arm (412), and a first spring (416) is fixed between the second hinge seat (415) and the U-shaped horizontal plate (413) and sleeved on the guide rod (414).

4. The toner cartridge structure for convenient toner refilling according to claim 3, characterized in that: The bottom of the second hinge seat (415) is fixed with a baffle (417) below the U-shaped horizontal plate (413). An extension rod (418) is fixed on one side of the baffle (417). A ball hinge seat (419) is fixed at the end of the extension rod (418). A rolling ball (420) is connected to the ball hinge seat (419).

5. The toner cartridge structure for convenient toner refilling according to claim 1, characterized in that: The top of the external threaded tube (401) is fixed with a conical cover (421), and two symmetrically arranged base plates (422) are fixed on the outer periphery of the conical cover (421). A cylindrical rod (423) is fixed on the top of each of the two base plates (422).

6. The toner cartridge structure for convenient toner refilling according to claim 5, characterized in that: The clamping member (5) is fixed with a conical positioning cover (501) that is adapted to the conical discharge hopper (202). The outer periphery of the conical positioning cover (501) is fixed with two lifting plates (502) that are respectively slidably fitted on the cylindrical rod (423). The bottom of the two lifting plates (502) is fixed with a second spring (503) that is respectively sleeved on the two cylindrical rods (423). The bottom end of the second spring (503) is fixedly connected to the top of the bottom plate (422).

7. The toner cartridge structure for convenient toner refilling according to claim 6, characterized in that: The conical positioning cover (501) has two symmetrically arranged U-shaped side plates (504) fixed on its outer periphery. The inner wall of the U-shaped side plate (504) is provided with an inclined plate (505), which slides in cooperation with the rolling ball (420).

8. The toner cartridge structure for convenient toner refilling according to claim 7, characterized in that: The protective cover (403) has two symmetrically arranged irregular side plates (424) fixed on its outer periphery, and each of the irregular side plates (424) has a lever (425) fixed on its opposite sides. Both of the lifting plates (502) have a limit groove (506) through their tops. Both of the limit grooves (506) have an L-shaped displacement plate (507) that slides inside them. The bottom of the L-shaped displacement plate (507) has two symmetrically arranged lower side plates (508). Both of the lower side plates (508) have a through oblique groove (509) that slides with the lever (425). Both of the L-shaped displacement plates (507) have a clamping plate (510) fixed on one side opposite to the cone-shaped positioning cover (501).

9. A toner cartridge structure for convenient toner refilling according to claim 5, characterized in that: The side of the drum body (3) is provided with an annular sealing groove (302) coaxially arranged with the powder filling port of the drum body (3). When the powder filling port of the drum body (3) is not filled with powder, it is connected with a sealing cap by thread. The top of the conical cover (421) is fixed with an annular sealing gasket (410) that is compatible with the annular sealing groove (302).

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