Leak-proof toner cartridge
By designing a double-interlocking toner inlet and sealing block, sealing groove and reinforced sealing layer in the toner cartridge, and by using the cooperation of limiting block and magnetic block, the problem of insufficient sealing of toner cartridge is solved, and effective leakage prevention and stable transportation of toner are achieved.
Patent Information
- Application Number
- CN202520240732.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-17
AI Technical Summary
The existing toner cartridges are not airtight enough, which makes toner prone to leakage during transportation and makes the switches easy to fall off.
A leak-proof toner cartridge was designed, featuring a double-interlocking toner inlet and sealing block, combined with a sealing groove and a reinforced sealing layer. The stability of the sealing cover is enhanced through the cooperation of a limiting block and a magnetic block.
It effectively prevents toner leakage, ensures airtightness, avoids toner moisture, and improves stability and ease of use during transportation.
Smart Images

Figure CN223770542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of toner cartridge technology, specifically to a leak-proof toner cartridge. Background Technology
[0002] Toner cartridges are the core consumables of laser printers and multifunction copiers. They are mainly used to store and transport toner. During the printing process, the toner cartridge delivers toner to the drum unit, which then transfers the toner onto the paper through the action of a photosensitive and magnetic roller to form text or images. Using high-quality toner cartridges ensures clear and accurate printing, improving the overall printing effect.
[0003] Existing toner cartridges consist of an outer shell, a refill port, a cover, and an internal discharge assembly. During use, the toner inside the outer shell is discharged through the discharge assembly. When the toner inside the outer shell is low, the cover is opened, and toner is added to the cartridge through the refill port. However, during storage and transportation, existing toner cartridges have insufficient sealing, allowing the toner inside to become damp. Furthermore, the switch is prone to detachment, causing toner leakage during transportation and inconveniencing actual use. Utility Model Content
[0004] The purpose of this invention is to provide a leak-proof toner cartridge to solve the problems mentioned in the background art, such as insufficient sealing of existing toner cartridges, moisture absorption of the internal toner, and easy detachment of the switch components, which lead to leakage of toner during transportation.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a leak-proof toner cartridge, comprising a cartridge body, a cartridge cover, and a toner inlet, wherein a cartridge cover is provided on one side of the cartridge body, a toner inlet is provided on the upper side of the cartridge body, a sealing groove is provided on the outer side of the toner inlet, and a sealing cap is inserted into the sealing groove.
[0006] The bottom of the sealing cap is connected to the powder injection port via a sealing block. A sealing groove is provided inside the sealing cap, and a reinforcing sealing layer is inserted inside the sealing groove. The bottom of the reinforcing sealing layer is connected to the sealing groove, and the reinforcing sealing layer is located on the upper side of the powder injection port. A positioning groove is provided on one side of the sealing cap.
[0007] Preferably, a positioning block is inserted into the positioning groove, and an installation groove is provided inside the box body, with the side of the positioning block away from the positioning groove being inserted into the installation groove.
[0008] Preferably, multiple reset springs are installed inside the mounting groove, and an inclined layer is provided on one side of the sealing groove, with the bottom of the inclined layer close to the box cover.
[0009] Preferably, connecting brackets are symmetrically inserted inside the mounting slot, and the adjacent sides of the two connecting brackets are connected to the positioning block.
[0010] Preferably, the ends of the two connecting brackets furthest from the reset spring abut against the limiting blocks, and the two limiting blocks are rotatably connected to the mounting groove via pins.
[0011] Preferably, the sealing cover has symmetrically formed limiting grooves inside, and limiting blocks are inserted into both limiting grooves. Magnetic blocks are connected to the inside of the mounting groove and the side of the limiting block near the connecting frame, and the adjacent sides of the two sets of magnetic blocks attract each other.
[0012] Preferably, the box body has symmetrical sliding grooves inside, and each of the two sliding grooves has a push block inserted inside. The bottom of each of the two push blocks is connected to the connecting frame, and the sliding grooves and push blocks are located on both sides of the sealing cover.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This leak-proof toner cartridge is equipped with a double-interlocking toner inlet and a sealing block, as well as a sealing groove and a reinforced sealing layer, which provides better protection against toner leakage. At the same time, it is equipped with a limiting block for reinforcing the sealing cover, which provides better stability during use. This solves the problems of insufficient sealing of existing toner cartridges, which cause the toner inside to become damp and the switch parts to easily fall off, resulting in toner leakage during transportation.
[0014] 1. To prevent toner leakage from the inside of the cartridge, this leak-proof toner cartridge has a sealing cap on the side where the toner inlet is located. During use, first insert the sealing block at the bottom of the sealing cap into the toner inlet. After insertion, the reinforced sealing layer at the bottom of the sealing cap will insert into the sealing groove on the upper side of the toner inlet, and the outer side of the sealing cap will also insert into the sealing groove. At this point, the outer side of the toner inlet has a double-layer insertion structure, resulting in better toner leakage prevention. After the sealing cap is inserted, the positioning block inside the mounting groove will be pushed by the internal return spring and insert into the positioning groove inside the sealing cap, limiting the position of the sealing cap. This leak-proof toner cartridge features a double-insertion toner inlet and sealing block, as well as a sealing groove and reinforced sealing layer, resulting in better toner leakage prevention.
[0015] 2. To further enhance the stability of the sealing cap and toner inlet insertion limit in this leak-proof toner cartridge, when the positioning block is inserted into the positioning groove, the positioning block will move together with the connecting brackets on both sides under the push of the return spring, and abut against the limit blocks on both sides of the mounting groove. This will push the limit blocks inside the mounting groove, which are rotatably connected by pins, to rotate. Through the squeezing action, the two magnetically attracted blocks will separate and insert into the limit grooves on both sides of the sealing cap, thus strengthening the limit of the sealing cap. This leak-proof toner cartridge is equipped with limit blocks for strengthening the limit of the sealing cap, resulting in better stability during use. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of the toner cartridge of this utility model;
[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the box body of this utility model;
[0018] Figure 3 This is a top view cross-sectional diagram of the box body of this utility model;
[0019] Figure 4 This is a three-dimensional structural diagram of the sealing cap of this utility model.
[0020] In the diagram: 1. Box body; 101. Box cover; 102. Powder inlet; 2. Sealing groove; 201. Sealing cap; 202. Sealing block; 203. Sealing groove; 3. Reinforced sealing layer; 4. Positioning groove; 401. Positioning block; 402. Mounting groove; 403. Connecting bracket; 404. Return spring; 5. Inclined layer; 6. Sliding groove; 601. Pushing block; 7. Limiting groove; 701. Limiting block; 702. Magnetic block. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.
[0022] Please see Figures 1-4 This utility model provides a technical solution: a leak-proof toner cartridge, including a cartridge body 1, a cartridge cover 101 and a toner inlet 102. The cartridge cover 101 is provided on one side of the cartridge body 1, and the toner inlet 102 is provided on the upper side of the cartridge body 1. A sealing groove 2 is provided on the outer side of the toner inlet 102, and a sealing cap 201 is inserted into the sealing groove 2.
[0023] The bottom of the sealing cover 201 is inserted into the powder inlet 102 via a sealing block 202. A sealing groove 203 is provided inside the sealing cover 201, and a reinforcing sealing layer 3 is inserted inside the sealing groove 203. The bottom of the reinforcing sealing layer 3 is connected to the sealing groove 202, and the reinforcing sealing layer 3 is located on the upper side of the powder inlet 102. A positioning groove 4 is provided on one side of the sealing cover 201, and a positioning block 401 is inserted inside the positioning groove 4. An installation groove 402 is provided inside the box body 1. The side of the positioning block 401 away from the positioning groove 4 is inserted into the installation groove 402. Multiple return springs 404 are installed inside the installation groove 402. An inclined layer 5 is provided on one side of the sealing groove 2, and the bottom of the inclined layer 5 is close to the box cover 101. Connecting brackets 403 are symmetrically inserted inside the installation groove 402, and the adjacent sides of the two connecting brackets 403 are connected to the positioning block 401.
[0024] In practical implementation, to prevent toner leakage inside the cartridge 1, a sealing cap 201 is provided on the side where the toner inlet 102 is located. During use, first insert the sealing block 202 at the bottom of the sealing cap 201 into the toner inlet 102. After insertion, the reinforced sealing layer 3 at the bottom of the sealing cap 201 will insert into the sealing groove 203 on the upper side of the toner inlet 102, and the outer side of the sealing cap 201 will insert into the sealing groove 2. At this time, the outer side of the toner inlet 102 has a double-layer insertion structure, resulting in better toner leakage prevention. The sealing cap 201 is then complete. After insertion of 1, the positioning block 401 inside the mounting groove 402 will be pushed by the internal return spring 404 to insert into the positioning groove 4 inside the sealing cover 201, limiting the position of the sealing cover 201. The inclined layer 5 on one side of the sealing groove 2 makes it easy for the user to remove the sealing cover 201 from the powder filling port 102 before filling the toner. This leak-proof toner box is equipped with a double-interlocking powder filling port 102 and sealing block 202, as well as a sealing groove 203 and a reinforced sealing layer 3, which makes the toner leakage prevention effect better.
[0025] See Figures 2-4 It can be seen that the ends of the two connecting brackets 403 away from the return spring 404 are abutted against the limiting block 701. The two limiting blocks 701 are rotatably connected to the mounting groove 402 through pins. The sealing cover 201 has symmetrically opened limiting grooves 7 inside, and the limiting blocks 701 are inserted into the two limiting grooves 7. The mounting groove 402 and the side of the limiting block 701 near the connecting bracket 403 are connected to magnetic blocks 702. The adjacent sides of the two sets of magnetic blocks 702 attract each other. The box 1 has symmetrically opened sliding grooves 6 inside, and the two sliding grooves 6 are inserted into the two pushing blocks 601. The bottom of the two pushing blocks 601 are connected to the connecting bracket 403. The sliding grooves 6 and the pushing blocks 601 are located on both sides of the sealing cover 201.
[0026] In specific implementation, to further enhance the stability of the insertion and limiting of the sealing cover 201 and the powder injection port 102, when the positioning block 401 is inserted into the positioning groove 4, the positioning block 401 will be pushed by the return spring 404, causing the connecting brackets 403 connected to it on both sides to move together and abut against the limiting blocks 701 on both sides of the mounting groove 402. This will push the limiting blocks 701 inside the mounting groove 402, which are rotatably connected by pins, to rotate. Through the squeezing action, the two magnetically attracted blocks 702 will separate and insert into the limiting grooves 7 on both sides of the sealing cover 201, thus ensuring the sealing cover is secure. The sealing cover 201 is reinforced with limiting. The sliding groove 6 and the pushing block 601 are designed so that when the sealing cover 201 needs to be removed, pushing the pushing block 601 inside the sliding groove 6 can move the positioning block 401 away from the mounting groove 402. At the same time, the connecting bracket 403 no longer abuts against the limiting block 701, and the limiting block 701 can be reset under the action of the magnetic block 702. At this time, the operator can easily remove the sealing cover 201 from the powder filling port 102. This leak-proof toner cartridge is equipped with a limiting block 701 to reinforce the limiting of the sealing cover 201, which makes the use more stable.
[0027] In summary, when using this leak-proof toner cartridge, after filling the toner cartridge through the filling port 102, insert the sealing block 202 at the bottom of the sealing cover 201 into the filling port 102. At the same time, the positioning block 401 and the connecting bracket 403 inside the mounting groove 402 will be pushed by the internal return spring 404, which will respectively drive the positioning block 401 to the positioning groove 4, and the limiting block 701 and the limiting groove 7 to insert into each other, limiting the position of the sealing cover 201 inside the sealing groove 2. At this time, the cartridge cover 101 can be opened, and the cartridge body 1 can be installed and connected to the printer. The contents not described in detail in this description are existing technologies known to those skilled in the art.
[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A leakage-proof toner cartridge comprising a cartridge body (1), a cartridge cover (101) and a toner filling port (102), characterized in that: The box body (1) is provided with a box cover (101) on one side, and a powder injection port (102) is arranged on the upper side of the box body (1), and a sealing groove (2) is arranged outside the powder injection port (102), and a sealing cover (201) is inserted into the sealing groove (2); The bottom of the sealing cover (201) is inserted into the powder injection port (102) through a sealing block (202), a sealing groove (203) is formed in the sealing cover (201), a reinforced sealing layer (3) is inserted into the sealing groove (203), the bottom of the reinforced sealing layer (3) is connected with the sealing groove (2), and the reinforced sealing layer (3) is located on the upper side of the powder injection port (102), and a positioning groove (4) is formed in one side of the sealing cover (201).
2. The leakproof toner cartridge of claim 1, wherein: The positioning groove (4) is inserted into a positioning block (401), and the box body (1) is provided with an installation groove (402), and the side of the positioning block (401) away from the positioning groove (4) is inserted into the installation groove (402).
3. The leakproof toner cartridge of claim 2, wherein: A plurality of reset springs (404) are installed in the installation groove (402), and an inclined layer (5) is arranged on one side of the sealing groove (2), and the bottom of the inclined layer (5) is close to the box cover (101).
4. The leakproof toner cartridge of claim 3, wherein: The installation groove (402) is symmetrically inserted into a connecting frame (403), and the side of the two connecting frames (403) adjacent to each other is connected with the positioning block (401).
5. The leakproof toner cartridge of claim 4, wherein: The end of the two connecting frames (403) away from the reset spring (404) is abutted with a limiting block (701), and the two limiting blocks (701) are rotatably connected with the installation groove (402) through a pin shaft.
6. The leakproof toner cartridge of claim 4, wherein: The limiting groove (7) is symmetrically formed in the sealing cover (201), and the limiting block (701) is inserted into the two limiting grooves (7), the side of the installation groove (402) and the limiting block (701) close to the connecting frame (403) is connected with a magnetic block (702), and the two groups of magnetic blocks (702) are attracted to each other.
7. The leakproof toner cartridge of claim 2, wherein: The box body (1) is symmetrically provided with a sliding groove (6), and the two sliding grooves (6) are inserted into a pushing block (601), and the bottom of the two pushing blocks (601) is connected with the connecting frame (403), and the sliding groove (6) and the pushing block (601) are located on both sides of the sealing cover (201).