Trash can having hidden press ring

By improving the pressure ring design of the trash can through guiding and limiting structures, the problems of unstable movement of the pressure ring and stain adhesion are solved, achieving stable fixation of the trash bag and a beautiful and clean appearance of the trash can.

WO2026153573A1PCT designated stage Publication Date: 2026-07-23CAO BAOMEI
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
CAO BAOMEI
Filing Date
2026-01-20
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

The existing pressure ring structure of trash cans lacks effective guidance or support, which makes the pressure ring unstable when moving up and down, making it difficult to control the distance from the mouth of the can, increasing the difficulty of installing trash bags, and making them easy to stick to stains, affecting hygiene and user experience.

Method used

The guide structure and connectors form a guiding fit, and the limiting structure provides a limiting fit, ensuring that the pressure ring moves up and down along the height of the cylinder under guidance, and forming a gap at the limiting position to accommodate the excess part of the garbage bag, thereby enhancing the fixing effect between the pressure ring and the garbage bag.

Benefits of technology

It ensures the stability and reliability of the pressure ring during the garbage bag installation process, avoids stains from sticking, and improves the convenience of garbage bag fixing and the simplicity of the garbage can's appearance.

✦ Generated by Eureka AI based on patent content.

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Abstract

A trash can having a hidden press ring, comprising a can body (100), a press ring (200), guiding structures (400), connecting members (300), and limiting structures (500); the guiding structures (400) are in guide fit with the connecting members (300), so that the connecting members (300) move upward and downward in a constrained manner along the inner side wall of the can body (100), so as to guide the press ring (200) to perform guided upward and downward movement in the height direction of the can body (100); and the limiting structures (500) are capable of providing a limiting fit when the press ring (200) moves upward to a limiting position, and causing a can opening gap (101) to be formed between the bottom of the press ring (200) and the upper end surface of the can body (100), the can opening gap (101) being used for accommodating an excess portion of a garbage bag after the garbage bag is wound around the press ring (200). The trash can not only facilitate a user to fix an opening of the garbage bag between the press ring (200) and the can body (100), so that the press ring (200) is completely covered and hidden by the opening of the garbage bag, thereby preventing the press ring (200) from being stuck by stains while avoiding the problem that the press ring (200) is prone to separate from or get lost with the can body (100), but also can significantly increase pressure and friction force generated by the press ring (200) on the garbage bag, thereby further preventing the problem that the garbage bag falls off from the edge of the can body (100) during use.
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Description

A trash can with a concealed pressure ring Technical Field

[0001] This utility model belongs to the field of trash can technology, specifically a trash can with a hidden pressure ring. Background Technology

[0002] A trash can is a common household item used to store garbage. It typically has a removable retaining ring at the top to secure the garbage bag opening. During actual use, garbage or stains inside the can easily come into contact with the retaining ring, causing it to stick and affecting hygiene and causing inconvenience later. Some users, when installing garbage bags, wrap the bag opening around the retaining ring, embedding the excess bag opening into the inner circumference of the trash can, and then press the retaining ring down to the top of the can. This method aims to secure the garbage bag while reducing contact between the retaining ring and the garbage inside the can.

[0003] However, during the installation process described above, the existing pressure ring structure usually lacks an effective guiding or supporting structure, making it difficult for the pressure ring to maintain a stable position when moving up and down. This makes it difficult to control the distance between the pressure ring and the opening of the bin, making it difficult for users to smoothly install the edge of the garbage bag opening onto the outer periphery of the pressure ring and the inner periphery of the garbage bin. This increases the difficulty of garbage bag installation and affects the user experience.

[0004] Therefore, it is necessary to provide a structurally improved trash can that ensures reliable fixation of the trash bag while providing better stability of the pressure ring during installation and use, and reduces the problem of the pressure ring coming into contact with trash or dirt inside the can. Utility Model Content

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a trash can with a concealed pressure ring, comprising a cylinder, a pressure ring, a guide structure, a connector, and a limiting structure; the guide structure and the connector form a guiding fit, causing the connector to move up and down along the inner side wall of the cylinder under constraint, thereby guiding the pressure ring to move up and down relative to the cylinder in a guided manner along the overall height direction of the cylinder; the limiting structure provides a limiting fit when the pressure ring moves up to the limiting position, and forms a cylinder opening gap between the bottom of the pressure ring and the upper end face of the cylinder for accommodating the excess portion of the trash bag after it is wrapped around the pressure ring.

[0006] Preferably, the upper end of the guide structure is located within 12 centimeters below the upper end face of the cylinder.

[0007] Preferably, the end of the connector away from the pressure ring is located within 12 centimeters below the upper end face of the cylinder.

[0008] Preferably, when the pressure ring moves upward to the limiting position, a receiving gap is formed in the radial direction between the connector and the inner wall of the cylinder. The receiving gap is used to accommodate the excess part of the garbage bag that is wrapped around the outer periphery of the pressure ring and extends into the inner side of the cylinder after the opening of the garbage bag is opened.

[0009] Preferably, the connector is a support rod.

[0010] Preferably, the guide structure includes a guide groove or guide rib disposed along the inner side wall of the cylinder.

[0011] Preferably, the limiting structure includes a fixing hook disposed on the support rod, the fixing hook being movable up and down along the guide groove or guide rib, and providing limiting engagement when the pressure ring moves up to the limiting position.

[0012] Preferably, the width of the fixing hook is greater than the width of the guide groove or guide rib.

[0013] Preferably, at least two of the guide grooves or guide ribs, support rods, and fixing hooks are provided.

[0014] Preferably, the pressure ring includes an outer ring and an upper ring, and the connector is connected to the upper ring. :

[0015] 1. In this utility model, since the excess part of the garbage bag wrapped around the outer periphery of the pressure ring is pressed between the pressure ring and the cylinder, the pressure and friction of the pressure ring on the garbage bag are significantly increased, thereby effectively preventing the garbage bag from falling off the edge of the cylinder during use.

[0016] 2. In this utility model, the outer periphery of the pressure ring is completely covered by the garbage bag opening, thus avoiding exposure, and the edge of the garbage bag opening is also hidden between the pressure ring and the cylinder, making the overall appearance of the garbage can more concise and beautiful.

[0017] 3. In this utility model, the opening of the garbage bag completely covers the pressure ring, preventing garbage or stains inside the bin from sticking to the surface of the pressure ring, which helps to keep the pressure ring clean and hygienic.

[0018] 4. In this utility model, the pressure ring moves up and down along the cylinder in the direction of cylinder height through the connecting piece. The movement stroke is limited and controllable, making the installation and fixing of garbage bags faster and more reliable.

[0019] 5. In this utility model, the pressure ring always maintains a connection with the cylinder, effectively avoiding the problem of the pressure ring separating from the cylinder or even being lost during use. Attached Figure Description

[0020] Figure 1 is a schematic diagram of a trash can with a concealed pressure ring after the pressure ring is installed;

[0021] Figure 2 is an enlarged view of point A in Figure 1;

[0022] Figure 3 is a cross-sectional schematic diagram of the connector after the pressure ring of a trash can with a concealed pressure ring is installed.

[0023] Figure 4 is a schematic diagram of a trash can with a concealed pressure ring when the pressure ring is lifted.

[0024] Figure 5 is an enlarged view of point B in Figure 4;

[0025] Figure 6 is a cross-sectional schematic diagram of the connector when the pressure ring of a trash can with a concealed pressure ring is lifted.

[0026] In the picture:

[0027] Cylinder body - 100; Cylinder opening gap - 101; Storage gap - 102; Pressure ring - 200; Outer ring - 201; Upper ring - 202; Connector - 300; Support rod - 301; Guide structure - 400; Guide groove or guide rib - 401; Limiting structure - 500; Fixing hook - 501.

[0028] Detailed Implementation

[0029] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but should not be used to limit the scope of protection of this utility model.

[0030] As shown in Figures 1-6, this utility model provides a trash can with a concealed pressure ring, including a cylinder 100, a pressure ring 200, a connector 300, a guide structure 400, and a limiting structure 500. The guide structure 400 and the connector 300 form a guide engagement, allowing the connector 300 to move up and down along the inner wall of the cylinder 100 under constraint, thereby guiding the pressure ring 200 to move up and down in a guided manner along the overall height direction toward the cylinder 100. The limiting structure 500 provides a limiting engagement when the pressure ring 200 moves up to the limiting position, and forms a cylinder opening gap 101 between the bottom of the pressure ring 200 and the upper end face of the cylinder 100 to accommodate the excess part of the garbage bag after it is wrapped around the pressure ring 200. The cylinder opening gap 101 allows the excess part of the garbage bag to extend from the outer wall of the cylinder 100 to the inner wall after the opening of the garbage bag is wrapped around the outer periphery of the pressure ring 200, so that the opening of the garbage bag can simultaneously cover the outer periphery of the pressure ring 200 and the inner peripheral side of the cylinder 100.

[0031] In this embodiment, since the pressure ring 200 moves up and down relative to the cylinder 100 in a guided manner, the stroke is limited and controllable, making the user's operation of fixing the garbage bag faster and more reliable, and avoiding the problem of the pressure ring 200 separating from the cylinder 100 or even being lost during use.

[0032] The connector 300 moves vertically along the inner wall of the cylinder 100. Compared to a position where the connector 300 is located on the non-inner wall inside the cylinder 100, this arrangement not only reduces the space occupied by the connector 300 and guide structure 400 inside the cylinder 100, but also facilitates the connection or support between the connector 300 and guide structure 400 and the inner wall of the cylinder 100. This prevents the pressure ring 200 from shaking or shifting significantly during vertical movement, making the fixing of the garbage bag more stable and reliable, and further improving the convenience and safety of garbage bag installation. At the same time, it also allows the connector 300 and guide structure 400 to be hidden inside the cylinder 100, ensuring the guiding and supporting functions while avoiding the exposed structure from affecting the overall appearance of the garbage can, thus making the garbage can more concise and beautiful.

[0033] In this embodiment, the guiding movement of the pressure ring 200 is mainly along the height direction of the cylinder 100, allowing for deflection during movement to adapt to assembly or actual use requirements. Covering both the outer periphery of the pressure ring 200 and the inner circumferential side of the cylinder 100 with the opening of the garbage bag ensures that any excess portion of the garbage bag opening is tightly pressed between the cylinder 100 and the pressure ring 200, significantly enhancing the pressure and friction generated by the pressure ring 200 on the garbage bag opening and effectively preventing the garbage bag from falling off the edge of the cylinder 100 during use. Simultaneously, the outer periphery of the pressure ring 200 is completely covered by the garbage bag opening, thus avoiding exposure and stain adhesion issues. Furthermore, the edge of the garbage bag opening is hidden between the pressure ring 200 and the cylinder 100, resulting in a simpler and more aesthetically pleasing overall appearance of the garbage bin.

[0034] The upper end of the guide structure 400 is located within 12 centimeters below the upper end face of the cylinder 100.

[0035] By arranging the guide structure 400 near the upper end face of the cylinder 100, the effective length of the pressure ring 200 and its connecting parts 300 inside the cylinder 100 can be effectively shortened. This reduces the stroke of the pressure ring 200 during its vertical movement and decreases its lateral sway, thereby improving the overall stability and ease of operation of the pressure ring 200 during bagging and pressing. Simultaneously, the shortened length of this structure reduces the space occupied by related structures inside the cylinder 100, further improving the effective volume utilization rate of the cylinder 100.

[0036] The end of the connector 300 away from the pressure ring 200 is located within 12 cm below the upper end face of the cylinder 100.

[0037] By arranging the fixed end of the connector 300 close to the upper surface of the cylinder 100, the overall length of the connector 300 is further shortened, reducing its tendency to bend and swing under stress, further improving the stability and ease of operation of the pressure ring 200 during bagging and pressing, while reducing the space occupied by the structure inside the cylinder 100.

[0038] When the pressure ring 200 moves up to the limit position, a receiving gap 102 is formed in the radial direction between the connector 300 and the inner wall of the cylinder 100. The receiving gap 102 is used to accommodate the excess part of the garbage bag that is wrapped around the outer periphery of the pressure ring 200 and extends to the inner wall of the cylinder 100 after the opening of the garbage bag.

[0039] Compared to a structure where the connector 300 is positioned on the outer wall of the cylinder 100, the aforementioned inner wall configuration creates a storage gap 102 to accommodate the excess portion of the garbage bag that extends into the inner side of the cylinder 100 after the bag opening has wrapped around the pressure ring 200. Positioning the connector 300 on the outer wall makes it difficult to create this storage gap 102, thus failing to achieve the same bagging assistance effect. The dotted lines in Figures 3 and 6 represent garbage bags. Furthermore, because the connector 300 is located inside the cylinder 100, it is less likely to be exposed during use, preventing it from affecting the overall appearance of the garbage bin or becoming contaminated due to exposure, thus helping to maintain the cleanliness of the garbage bin.

[0040] The connector 300 is a support rod 301. In this embodiment, the support rod 301 has a simple structure and is easy to mold in one piece; the support rod 301, which is integrally molded from plastic material, not only meets the requirements for strength and use, but also has the advantages of convenient processing and low cost.

[0041] The guide structure 400 includes a guide groove or guide rib 401 disposed along the inner wall of the cylinder 100. The guide groove or guide rib 401 extends mainly along the height direction of the cylinder 100 and is used to limit the movement path of the support rod 301, so that the pressure ring 200 is guided and constrained during movement. By providing the guide groove or guide rib 401 extending along the inner wall of the cylinder 100, a clear direction of movement constraint is provided for the pressure ring 200, avoiding disorderly swaying during bagging or pressing, thereby improving the overall stability of use.

[0042] The limiting structure 500 includes a fixing hook 501 fixedly mounted on the support rod 301. The fixing hook 501 can move up and down along the guide groove or guide rib 401 and provides a limiting engagement when the pressure ring 200 moves to the limiting position.

[0043] When the fixing hook 501 moves to the uppermost end of the guide groove or guide rib 401, the fixing hook 501 and the side wall of the cylinder 100 form a limiting fit, thereby restricting the support rod 301 and the pressure ring 200 from continuing to move upward. Through the pressure or friction formed between the fixing hook 501 and the side wall of the cylinder 100, the pressure ring 200 is stably kept in the predetermined bagging position, which is conducive to forming a stable and maintainable cylinder opening gap 101.

[0044] The width of the fixing hook 501 is greater than the width of the guide groove or guide rib 401. This design further enhances the pressure or friction between the fixing hook 501 and the side wall of the cylinder 100, thereby ensuring that the fixing hook 501 moves stably along the direction of the guide groove or guide rib 401 and, upon reaching the limit position, keeps the pressure ring 200 stably stationary at the predetermined bagging position. Simultaneously, it effectively limits the radial sway of the support rod 301, improves the posture stability of the pressure ring 200 during vertical movement, and reduces the risk of jamming.

[0045] At least two guide grooves or guide ribs 401, support rods 301 and fixing hooks 501 are provided and are arranged at intervals along the circumference of the cylinder 100.

[0046] By using multi-point guidance and multi-point limiting, the pressure ring 200 can achieve multi-point force during the upward and downward movement, thereby significantly reducing the probability of tilting, shaking or jamming, and further improving the stability and reliability of the garbage bag fixing process.

[0047] The pressure ring 200 includes an outer ring 201 and an upper ring 202, and the connector 300 is connected to the upper ring 202.

[0048] The pressure ring 200 adopts a two-ring structure of outer ring 201 and upper ring 202, instead of a three-ring structure. While ensuring the clamping and fixing effect on the garbage bag, it can effectively reduce the friction between the pressure ring 200 and the garbage bag, thereby avoiding the problem of difficulty in disassembling the pressure ring 200 due to excessive friction. This allows the pressure ring 200 to be easily removed even after the garbage bag is wrapped around it, thus balancing the stability of the fixation and the convenience of use.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Simple modifications and substitutions made by those skilled in the art without departing from the spirit and scope of this utility model are within its protection scope.

Claims

1. A garbage can with hidden pressing ring, characterized in that: The garbage can comprises a cylinder, a pressing ring, a guiding structure, a connecting piece and a limiting structure. The guiding structure and the connecting piece form a guiding cooperation, so that the connecting piece moves up and down along the inner side wall of the cylinder to guide the pressing ring to move up and down along the cylinder in a direction generally towards the height of the cylinder. The limiting structure can provide a limiting cooperation when the pressing ring moves up to a limiting position, and form a cylinder gap between the bottom of the pressing ring and the upper end surface of the cylinder to accommodate the excess part of the garbage bag after winding the pressing ring.

2. The garbage can with hidden pressing ring according to claim 1, characterized in that, The upper end of the guiding structure is located within 12 cm below the upper end surface of the cylinder.

3. The garbage can with hidden pressing ring according to claim 1, characterized in that, The end of the connecting piece away from the pressing ring is located within 12 cm below the upper end surface of the cylinder.

4. The garbage can with hidden pressing ring according to claim 1, characterized in that, When the pressing ring moves up to the limiting position, the connecting piece and the inner side wall of the cylinder form a receiving gap in the radial direction, which is used to accommodate the excess part of the garbage bag after winding the outer periphery of the pressing ring and extending to the inside of the cylinder.

5. The garbage can with hidden pressing ring according to claim 2 or 4, characterized in that, The connecting piece is a support rod.

6. The garbage can with hidden pressing ring according to claim 2, characterized in that, The guiding structure comprises a guiding groove or guiding rib arranged along the inner side wall of the cylinder.

7. The garbage can with hidden pressing ring according to claim 1, characterized in that, The limiting structure comprises a fixed hook arranged on the support rod, which can move up and down along the guiding groove or guiding rib, and provide a limiting cooperation when the pressing ring moves up to the limiting position.

8. The garbage can with hidden pressing ring according to claim 7, characterized in that, The width of the fixed hook is greater than the width of the guiding groove or guiding rib.

9. The garbage can with hidden pressing ring according to claim 6, characterized in that, The guiding groove or guiding rib, the support rod and the fixed hook are arranged at least two.

10. The garbage can with a hidden pressing ring according to claim 1, characterized in that, The pressing ring comprises an outer ring and an upper ring, and the connecting piece is connected with the upper ring. The garbage can comprises a cylinder, a pressing ring, a guiding structure, a connecting piece and a limiting structure. The guiding structure and the connecting piece form a guiding cooperation, so that the connecting piece moves up and down along the inner side wall of the cylinder to guide the pressing ring to move up and down along the cylinder in a direction generally towards the height of the cylinder. The limiting structure can provide a limiting cooperation when the pressing ring moves up to a limiting position, and form a cylinder gap between the bottom of the pressing ring and the upper end surface of the cylinder to accommodate the excess part of the garbage bag after winding the pressing ring.