Motor direct drive opening and closing door garbage can

Abstract

The utility model discloses a motor direct drive open and close door garbage can, whole structure includes the barrel body and upper cover subassembly, and the upper cover subassembly is by the casing drive subassembly and first cover plate constitutes, and drive subassembly contains the first motor and first connecting piece that connect in proper order, and the first motor is installed in the casing inside, and one end of first connecting piece is connected with the first motor output shaft, and the other end is fixed with first cover plate, and the opening or closing of first cover plate relative casing is realized through the direct drive of the positive and negative rotation of first motor. The design adopts the innovative mode of motor direct drive, and fundamentally solves the problems of the prior art, such as complicated assembly, easy loosening, gear jamming, poor gear engagement and the like. The motor and the first cover plate directly transmit power through the first connecting piece, the transmission path is short, the power loss is small, the door body is more quickly and smoothly opened and closed, and the operating noise is extremely low. At the same time, the driving structure is simplified, the number of parts is reduced, the assembly difficulty and manufacturing cost are reduced, and the post-maintenance demand and failure rate are also reduced.

Description

Technical Field

[0001] This utility model relates to the field of trash can technology, specifically to a motor-driven direct-drive opening and closing door trash can. Background Technology

[0002] Trash cans are indispensable sanitation facilities in daily life and public spaces, and the drive structure of their opening and closing doors directly affects the user experience, manufacturing costs, and lifespan. Currently, there are two main types of smart trash can door opening and closing drive mechanisms on the market: one uses a linkage push rod mechanism, where multiple rods connect the motor and the door, relying on the linkage transmission to open and close the door; the other uses a gear structure, where gear meshing drives the double doors in a linked motion. However, both methods have significant drawbacks. Trash cans using linkage push rod mechanisms involve the complex assembly process and are difficult to manufacture due to the coordination and installation of multiple rods. Furthermore, during long-term use, the connections between the rods are prone to loosening or jamming, leading to uneven door opening and closing. This not only affects the user experience but also increases maintenance costs and equipment failure rates. Gear-driven trash cans require extremely high precision in gear manufacturing. Errors during processing, or the entry of dust or debris into the gear meshing area, can easily lead to poor meshing, resulting in significant noise, accelerated gear wear, and a shortened lifespan. Furthermore, the gear structure occupies internal space, compressing the trash can's storage area and affecting its capacity. In addition, existing drive mechanisms suffer from slow response times and insufficient control precision, failing to meet users' demands for convenient, efficient, and stable operation. Therefore, there is an urgent need for a simple, easy-to-assemble, stable, and space-efficient trash can door opening and closing drive solution to address the numerous pain points of existing technologies. Utility Model Content

[0003] The present invention aims to overcome at least one of the defects of the prior art and provide a motor-driven direct-drive door-opening trash can to achieve simple assembly, high stability and low cost.

[0004] This utility model provides a motor-driven direct-drive door-opening trash can, defining its core components and drive logic. The overall structure includes a bin body and a lid assembly. The lid assembly consists of a housing drive assembly and a first cover plate. The drive assembly includes a first motor and a first connector connected in sequence. The first motor is installed inside the housing. One end of the first connector is connected to the output shaft of the first motor, and the other end is fixed to the first cover plate. The first cover plate is directly driven relative to the housing to open or close by the forward and reverse rotation of the first motor. This design abandons the traditional complex linkage push rod mechanism and gear transmission structure, adopting an innovative direct-drive method, fundamentally solving the problems of cumbersome assembly, easy loosening and jamming, and poor gear meshing in existing technologies. The motor and the first cover plate directly transmit power through the first connector, resulting in a short transmission path, low power loss, faster and smoother door opening and closing, and extremely low operating noise. At the same time, it simplifies the drive structure, reduces the number of parts, lowers assembly difficulty and manufacturing costs, and also reduces later maintenance needs and failure rate. The motor is installed inside the housing, which does not occupy the trash can's garbage-holding space, ensuring the trash can's storage capacity and improving the product's practicality.

[0005] In one embodiment of this utility model, a motor mounting base is also included. The motor mounting base has two sides fixed inside the housing, and a through hole is formed in the middle through which the first motor passes and is securely fixed. This design provides a stable mounting carrier for the first motor through the motor mounting base. Compared to directly fixing the motor to the housing, the connection is more secure, effectively absorbing vibrations generated during motor operation, preventing loosening of the motor over long-term use, ensuring the stability of the connection between the motor output shaft and the first connecting component, and ensuring precise and efficient power transmission. The structural design of the motor mounting base does not affect the normal operation of the motor, while also protecting it, reducing the impact of external impacts on the motor, and extending its service life. At the same time, the installation method of the motor mounting base is simple, requiring no complex processes, further reducing assembly difficulty, improving production efficiency, and ensuring consistency and stability during mass production.

[0006] Furthermore, the first connector is U-shaped, with one end fixedly connected to the first cover plate and the other end having a through hole, through which the output shaft of the first motor is fixed. The U-shaped structure design balances connection stability and transmission flexibility, enabling efficient power transmission within a limited housing space and avoiding interference with other components. The connection method at both ends of the first connector is simple and reliable: one end is fixed to the first cover plate to ensure no relative displacement during transmission, and the other end is fixed to the motor output shaft through the through hole, providing a secure connection and facilitating assembly and disassembly. This structural design allows the motor's driving force to be directly and evenly transmitted to the first cover plate, ensuring smooth door opening and closing without jamming or shifting. Simultaneously, the U-shaped structure has high strength, capable of withstanding long-term repeated transmission stress, and is not easily deformed or damaged, further improving the service life and reliability of the drive structure.

[0007] Preferably, the housing consists of an interlocking upper shell and a lower shell, with one end of each shell protruding outwards to form a motor housing compartment. A movable cavity is located in the center of the motor housing compartment. The interlocking design of the upper and lower shells facilitates assembly and disassembly of the housing, reducing operational difficulty during production and maintenance. The motor housing compartment provides dedicated installation space for the first motor, protecting it from dust and debris that could affect its operation, while also reducing the impact of motor vibration on other components. The movable cavity provides ample space for the first connector to rotate the first cover plate, ensuring that the cover plate rotates within the range of 0 to the maximum opening angle without obstruction from the housing, guaranteeing smooth door opening and closing without jamming. The overall structure of the housing is compact and rationally designed, accommodating the drive components without occupying excessive space, ensuring a thin and lightweight upper cover assembly, and enhancing the overall aesthetics and practicality of the product.

[0008] More preferably, this invention specifies that the rotation angle range of the first connecting member driving the first cover plate is 0 to 160 degrees. This angle range is precisely calculated to meet the actual needs of users for garbage disposal, ensuring a sufficiently large disposal opening for various types of waste, while avoiding energy waste and space occupation due to excessive opening angles, and reducing the risk of collisions with the surrounding environment when the door opens. The reasonable limitation of the rotation angle makes the travel of the first motor more standardized, helping to improve control precision and ensuring that the door opens and closes accurately each time, avoiding excessive rotation that causes additional wear and tear on the motor or connecting member, and extending the service life of components. Furthermore, the fixed angle range also facilitates user habit formation, improving ease of use and making it suitable for various scenarios such as homes and public places.

[0009] In another embodiment of this utility model, a second motor, a second connector, and a second cover plate are added. One end of the second connector is connected to the output shaft of the second motor, and the other end is connected to the second cover plate. The first and second cover plates adopt a split-opening design. The split-opening structure makes the opening method of the trash can more flexible. Compared with the single-cover design, the split-opening cover plate occupies less space when opened, which is especially suitable for narrow environments. At the same time, the opening area of ​​the disposal opening is larger, making it convenient for users to quickly dispose of trash and improving usage efficiency. The dual motors drive the corresponding cover plates respectively, which can realize multiple modes of single-cover opening or simultaneous opening of both covers to meet the needs of different usage scenarios. For example, when disposing of a small amount of trash, only one cover plate can be opened to reduce odor emission. The dual-motor drive design makes the power transmission more balanced, and the operation of each cover plate is more stable. It avoids the problems of uneven force and asynchronous opening and closing that may occur when a single motor drives two covers, further improving the stability of the product and the user experience. The dual-cover design can also meet the requirements of garbage classification. Different covers correspond to different garbage bags or garbage bin sections, which can adapt to the requirements of garbage classification.

[0010] More preferably, this utility model defines a locking block structure for the upper cover assembly and a connection method for the cover plates. One end of the upper cover assembly has a locking block with a locking hole. The ends of the first and second cover plates have rotating shafts that are rotatably connected to the locking holes. The cooperation between the locking block and the rotating shaft provides a stable fulcrum for the cover plates, ensuring smooth rotation around the shaft under motor drive and preventing offset or jamming. Compared to traditional hinge connections, this structure is simpler to assemble, more secure, and less prone to loosening over long-term use. The locking hole design limits and protects the rotating shaft, reducing wear and extending the cover plate's lifespan. Simultaneously, this connection method makes disassembly and replacement of the cover plates more convenient. If the cover plate is damaged, repair can be performed without disassembling the entire upper cover assembly, reducing maintenance costs and improving product usability.

[0011] The same top cover assembly consists of an upper shell and a lower shell, with a strip-shaped heat dissipation hole at the bottom of the lower shell for cooling the first and second motors. Motors generate heat during long-term operation; if this heat cannot be dissipated in time, it will affect the motor's performance and lifespan, and may even cause malfunctions. The strip-shaped heat dissipation hole creates a good airflow channel, quickly expelling the heat generated by the motor, effectively reducing the motor's operating temperature, ensuring the motor remains in a stable operating state, and improving the reliability and durability of the drive system. The strip-shaped design of the heat dissipation hole ensures effective heat dissipation while effectively preventing dust and debris from entering the housing, avoiding contamination and damage to the motors and control components. The location of the heat dissipation hole at the bottom of the lower shell does not affect the overall aesthetics of the product, and conforms to the physical principles of air convection, further improving heat dissipation efficiency.

[0012] More preferably, this invention adds power supply-related components and a display component. The upper cover component contains an interconnected PCBA board, a low-light photovoltaic panel, and a battery. An EVA pad is placed between the battery and the low-light photovoltaic panel. It also includes a decorative panel, with a light guide plate below the decorative panel. The combination of the PCBA board, the low-light photovoltaic panel, and the battery forms an independent power supply system. The low-light photovoltaic panel can collect light energy and convert it into electrical energy in low-light environments, providing continuous power support for motors and other electronic components. This eliminates dependence on external power sources or frequent battery replacements, reducing operating costs, minimizing environmental pollution, and expanding the product's applicable scenarios. The EVA pad has excellent cushioning and insulation properties, effectively protecting the battery and the low-light photovoltaic panel from damage caused by collisions or friction. It also provides insulation, improving the safety of the power supply system. The combination of the decorative panel and the light guide plate allows for the configuration of a display screen, clearly showing the product's operating status, such as battery level and opening / closing mode. The light guide plate ensures uniform light distribution, improving display quality and allowing users to easily monitor product status in real time, thus enhancing usability.

[0013] More preferably, this utility model adds a trash can fixing mechanism, which includes a clip, a fixing plate, and a fixing frame. The clip connects to the trash can, the fixing plate is detachably connected to the clip, and the fixing frame is detachably connected to the fixing plate. The bottom of the fixing frame has multiple protrusions, and the fixing plate has corresponding recesses. The trash bag is fixed by the protrusions fitting into the recesses. This fixing mechanism solves the problem of trash bags easily slipping and shifting in traditional trash cans. The precise fit between the protrusions and recesses firmly fixes the trash bag at the can opening, preventing the trash bag from falling off or shifting when disposing of trash. This avoids direct contact between trash and the inside of the can, reducing cleaning difficulty and maintaining the hygiene of the can's interior. The detachable connection design between the components makes installing and replacing trash bags more convenient. Users can complete fixing and disassembly without complicated operations, improving the user experience. The fixing mechanism has a simple and compact structure, does not occupy too much space, and does not affect the disposal and capacity of trash, further enhancing the product's practicality and user experience.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model comprehensively solves the problems of complex opening and closing drive structures, cumbersome assembly, unstable operation, and space occupation in existing trash cans through a series of structural innovations and optimizations. The core design, employing a direct motor drive, simplifies the drive structure, reduces manufacturing and maintenance costs, improves the smoothness and stability of door opening and closing, and reduces noise and failure rates. The design of multiple auxiliary structures, such as the motor mounting base, the L-shaped connector, and the locking block shaft connection, further enhances operational stability and ease of assembly. The split-type cover design and adjustable rotation angle improve usability and adaptability to various scenarios. The addition of a power supply system eliminates dependence on external power, making it environmentally friendly and practical; the fixing mechanism solves the problem of securing trash bags, improving hygiene. The overall structural design is compact and reasonable, integrating multiple practical functions while ensuring sufficient trash capacity. It is stable in operation, convenient to use, and cost-effective, suitable for various scenarios such as homes, public spaces, and commercial services, and has broad application prospects and promotional value. Attached Figure Description

[0016] Figure 1 This is a disassembly diagram of the single-door motor direct-drive opening and closing door trash can according to Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the disassembly structure of the upper cover assembly in Embodiment 1 of this utility model.

[0018] Figure 3 This is a schematic diagram of the exploded structure of the housing of the upper cover assembly in Embodiment 1 of this utility model.

[0019] Figure 4 This is a partial disassembly diagram of the garbage can fixing mechanism in Embodiment 1 of this utility model.

[0020] Figure 5 This is a disassembly diagram of the double-door motor direct-drive opening and closing door trash can of Embodiment 2 of this utility model.

[0021] Figure 6 This is a schematic diagram of the disassembly structure of the upper cover assembly in Embodiment 2 of this utility model.

[0022] Figure 7 This is a schematic diagram of the exploded structure of the housing of the upper cover assembly in Embodiment 2 of this utility model.

[0023] Figure 8 This is a partial disassembly diagram of the garbage can fixing mechanism in Embodiment 2 of this utility model. Detailed Implementation

[0024] The accompanying drawings illustrate the technical solutions of this utility model in more detail. Throughout the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. The described embodiments are only some, not all, of the embodiments of this utility model. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0026] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application. Example 1

[0027] This embodiment provides a single-door, motor-driven direct-drive trash can for opening and closing the door, such as... Figure 1 As shown, it includes a barrel body 1 and a top cover assembly 2; combined with Figures 2-3As shown, the upper cover assembly 2 includes a housing 21, a drive assembly 22 and a first cover plate 23; the drive assembly 22 includes a first motor 221, a first connecting member 222 and a motor fixing seat 223 connected in sequence; both sides of the motor fixing seat 223 are fixed in the housing 21; a through hole 10 is provided in the middle of the motor fixing seat 223; the first motor 221 passes through the through hole 10 and is fixed therein. One end of the first connecting member 222 is connected to the output shaft of the first motor 221, and the other end is connected to the first cover plate 23, so that the first motor 221 drives the first cover plate 23 to open or close relative to the housing 21. The housing 21 includes an upper shell 211 and a lower shell 212 that are fastened to each other; one end of the upper shell 211 and the lower shell 212 protrudes outward, and a motor accommodating bin is formed inside; a movable cavity 20 is provided in the middle of the motor accommodating bin; the movable cavity 20 is used to provide a movable space for the first connecting member 222 to drive the first cover plate 23 to rotate.

[0028] The first connecting member 222 is in a "L" shape; one end thereof is fixedly connected to the first cover plate 23; the other end is provided with a through hole 30; the output shaft of the first motor 221 is fixed to the through hole 30. The rotation angle of the first cover plate 23 driven by the first connecting member 222 is 0 to 160°.

[0029] The motor direct-drive opening and closing door trash can further includes a PCBA board 3, a low-light photovoltaic panel 4 and a battery 5 which are arranged in the upper cover assembly 2 and electrically connected; an EVA pad 6 is further arranged between the battery 5 and the low-light photovoltaic panel 4; the trash can further includes a decorative plate 7, one end of the low-light photovoltaic panel 4 is further provided with a light guide plate 8, the decorative plate can be made of a transparent material and is arranged above the low-light photovoltaic panel 4 and the light guide plate 8.

[0030] In conjunction with Figure 4 As shown, the motor direct-drive opening and closing door trash can further includes a trash can fixing mechanism 9; which includes a clamping member 91, a fixing plate 92 and a fixing frame 93; the clamping member 91 is connected to the trash can; the fixing plate 92 is detachably connected to the clamping member 91; the fixing frame 93 is detachably connected to the fixing plate 92; the bottom of the fixing frame 93 is provided with a plurality of protruding posts 931; the fixing plate 92 is provided with a plurality of recessed positions 921 matching the protruding posts 931; the garbage bag is fixed by embedding the protruding posts 931 into the recessed positions 921. Embodiment 2

[0031] This embodiment provides a double-door motor direct-drive opening and closing door trash can, as shown in Figure 5 As shown, it includes a can body 1 and an upper cover assembly 2; in conjunction with Figure 6As shown, the upper cover assembly 2 includes a housing 21, a drive assembly 22, a first cover plate 23, and a second cover plate 24. The drive assembly 22 includes a first motor 221, a first connector 222, a second motor 224, and a second connector 225 connected in sequence. The first motor 221 is installed in the housing 21. One end of the first connector 222 is connected to the output shaft of the first motor 221, and the other end is connected to the first cover plate 23, so that the first motor 221 drives the first cover plate 23 to open or close relative to the housing 21. One end of the second connector 225 is connected to the output shaft of the second motor 224, and the other end is connected to the second cover plate 24. The first cover plate 23 and the second cover plate 24 are opposite to each other.

[0032] like Figure 7 As shown, the upper cover assembly 2 includes an upper shell 211 and a lower shell 212; one end of the upper shell 211 is provided with a locking block 40; the locking block 40 is provided with a locking hole 50; the ends of the first cover plate 23 and the second cover plate 24 are both provided with a rotating shaft 60; the rotating shaft 60 is rotatably connected to the locking hole 50. The bottom of the lower shell 212 is also provided with a strip-shaped heat dissipation hole 70 for heat dissipation of the first motor 221 and the second motor 224.

[0033] The motor-driven direct-drive door trash can also includes a PCBA board 3, a low-light photovoltaic panel 4, and a battery 5, which are electrically connected to the upper cover assembly 2; an EVA pad 6 is also provided between the battery 5 and the low-light photovoltaic panel 4; it also includes a decorative panel 7, and a light guide plate 8 is provided at one end of the low-light photovoltaic panel 4. The decorative panel can be made of transparent material and is located above the low-light photovoltaic panel 4 and the light guide plate 8.

[0034] The motor-driven direct-drive door-opening trash can also includes a trash can fixing mechanism 9; including a clip 91, a fixing plate 92, and a fixing frame 93; the clip 91 is connected to the trash can body; the fixing plate 92 is detachably connected to the clip 91; the fixing frame 93 is detachably connected to the fixing plate 92; the bottom of the fixing frame 93 is provided with multiple protrusions 931; the fixing plate 92 is provided with multiple recesses 921 that match the protrusions 931; the trash bag is fixed by embedding the protrusions 931 into the recesses 921. Example 3

[0035] The difference between this embodiment and Embodiment 1 is that the drive component is pneumatically driven. Compressed air is introduced into a cylinder connected to the door body via an air source device, such as an air pump. The extension and retraction of the cylinder drives the door body to open and close. Example 4

[0036] The difference between this embodiment and Embodiment 1 is that the drive assembly is hydraulically driven. Hydraulic components such as a hydraulic pump and hydraulic cylinder are installed, and the flow and pressure changes of hydraulic oil drive the piston of the hydraulic cylinder to move, thereby opening and closing the door.

[0037] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the preferred embodiments above, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model should not depart from the spirit and scope of this utility model. Those skilled in the art can also make other changes within the spirit of this utility model for its design, as long as they do not deviate from the technical effect of this utility model. These changes made according to the spirit of this utility model should all be included within the scope of protection claimed by this utility model.

Claims

1. A motor-driven direct-drive door-opening trash can, characterized in that, comprises a barrel body (1) and an upper cover assembly (2); Said upper cover assembly (2) comprises a housing (21), a drive assembly (22) and a first cover plate (23); Said drive assembly (22) comprises a first motor (221) and a first connecting member (222) connected in sequence; Said first motor (221) is installed in said housing (21); One end of said first connecting member (222) is connected to the output shaft of said first motor (221), and the other end is connected to said first cover plate (23), such that said first motor (221) drives said first cover plate (23) to open or close relative to said housing (21).

2. The motor-driven direct-drive door-opening trash can according to claim 1, characterized in that, It further comprises a motor fixing base (223); two sides of said motor fixing base (223) are fixed in said housing (21); a through hole (10) is provided in the middle of said motor fixing base (223); said first motor (221) passes through said through hole (10) and is fixed therein, and the output shaft of said first motor (221) is connected to said first connecting member (222).

3. The motor-driven direct-drive door-opening trash can according to claim 2, characterized in that, Said first connecting member (222) is L-shaped; one end thereof is fixedly connected to said first cover plate (23); the other end is provided with a through hole (30); the output shaft of said first motor (221) is fixed to said through hole (30).

4. The motor-driven direct-drive door-opening trash can according to claim 2, characterized in that, Said housing (21) comprises an upper shell (211) and a lower shell (212) that are mutually fastened; one end of said upper shell (211) and said lower shell (212) protrudes outward, and a motor accommodating compartment is formed inside; a movable cavity (20) is provided in the middle of said motor accommodating compartment; said movable cavity (20) is used to provide a movable space for said first connecting member (222) to drive said first cover plate (23) to rotate.

5. The motor-driven direct-drive door-opening trash can according to claim 3, characterized in that, The rotation angle by which said first connecting member (222) drives said first cover plate (23) is 0 to 160°.

6. The motor-driven direct-drive door-opening trash can according to claim 1, characterized in that, It further comprises a second motor (224), a second connecting member (225) and a second cover plate (24); one end of said second connecting member (225) is connected to the output shaft of said second motor (224), the other end is connected to said second cover plate (24), and said first cover plate (23) and said second cover plate (24) are arranged in a split-opening manner.

7. The motor-driven direct-drive door-opening trash can according to claim 6, characterized in that, One end of said upper cover assembly (2) is provided with a clamping block (40); said clamping block (40) is provided with a clamping hole (50); the ends of said first cover plate (23) and said second cover plate (24) are provided with rotating shafts (60); said rotating shafts (60) are rotatably connected to said clamping hole (50).

8. The motor-driven direct-drive door-opening trash can according to claim 7, characterized in that, Said upper cover assembly (2) comprises an upper shell (211) and a lower shell (212); the bottom of said lower shell (212) is provided with strip-shaped heat dissipation holes (70) for heat dissipation of said first motor (221) and said second motor (224).

9. The direct-drive motor-driven door-opening trash can according to any one of claims 1 to 8, characterized in that, It further comprises a PCBA board (3), a low-light photovoltaic panel (4) and a battery (5) which are arranged in said upper cover assembly (2) and electrically connected; it further comprises an EVA pad (6) arranged between said battery (5) and said low-light photovoltaic panel (4); it further comprises a decorative plate (7), and one end of said low-light photovoltaic panel (4) is further provided with a light guide plate (8).

10. The motor-driven direct-drive door-opening trash can according to any one of claims 1 to 8, characterized in that, It also includes a trash can fixing mechanism (9) installed on the can body; including a clip (91), a fixing plate (92) and a fixing frame (93); the clip (91) is connected to the trash can; the fixing plate (92) is detachably connected to the clip (91); the fixing frame (93) is detachably connected to the fixing plate (92); the bottom of the fixing frame (93) is provided with a plurality of protrusions (931); the fixing plate (92) is provided with a plurality of recesses (921) that match the protrusions (931); the trash bag is fixed by embedding the protrusions (931) into the recesses (921).

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