Refrigerator

Abstract

This invention relates to a freezer, belonging to the field of refrigeration equipment. The freezer includes: a cabinet body, a sliding structure, a first door, a second door, and a closing structure. The top of the cabinet body has a loading / unloading opening, and the cabinet body has a front side and a rear side. The sliding structure is located at the opening of the cabinet body; the sliding structure includes a first slide rail and a second slide rail of different heights; the first slide rail and the second slide rail are symmetrically arranged on both sides of the loading / unloading opening; the first slide rail includes a sequentially connected arc segment and a sliding segment, the arc segment being located on the side of the sliding segment near the front of the cabinet body; the center of the arc segment faces the bottom of the cabinet body, and the length direction of the sliding segment is along the front-rear direction of the cabinet body. The two sides of the first door slide along the first slide rail; the first door includes an interconnected horizontal segment and a curved segment, the curved segment being located on the side of the horizontal segment near the front of the cabinet body; the center of the curved segment faces the bottom of the cabinet body. The two sides of the second door slide along the second slide rail. The closing structure is used to return the second door body to its original position.

Description

Technical Field

[0001] This invention belongs to the field of refrigeration equipment technology, and in particular relates to a freezer. Background Technology

[0002] Commercial freezers refer to refrigerated or frozen freezers sold exclusively by commercial channels such as supermarkets, beverage shops, frozen food stores, hotels, and restaurants for storing ice cream, beverages, dairy products, frozen foods, and food ingredients.

[0003] In existing technology, freezers typically have their openings at the top, using sliding doors on either side. This design is particularly inconvenient when the freezer is longer than 1.5 meters, as the larger and heavier doors increase friction during use. Users need to apply more force when pushing or pulling the doors, especially when the freezer is cluttered or unevenly distributed. The size and weight of the doors cause consumers to feel strained during use, which not only affects the user experience but may also influence their purchasing decisions, particularly in situations where frequent opening and closing of the freezer door is required when selecting items. Furthermore, especially with sliding doors, a significant portion of the door still obstructs the freezer opening, hindering the user's ability to retrieve and place items. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a freezer designed with user convenience and efficient access in mind. The optimized cabinet structure, combined with a unique sliding mechanism, offers users a convenient way to store and retrieve items. When the first door is pushed, it moves towards the rear of the cabinet along the arc section of the first slide rail, rotating simultaneously. At the same time, the second door is pushed towards the rear of the cabinet by the first door, opening the cabinet opening. Because the first door rotates, most of its curved section is located below the second door, reducing obstruction of the cabinet opening and facilitating user access to items. Furthermore, a closing mechanism is included; pulling the first door back to its original position resets the second door as well, completely closing the cabinet opening without requiring the second door to be pulled separately. This solves the technical problems of inconvenient door opening and closing and door obstruction of the freezer opening in existing technologies.

[0005] This invention provides a freezer, comprising:

[0006] The cabinet has an access opening at the top and has a front and a rear side.

[0007] A sliding structure is provided at the opening of the cabinet; the sliding structure includes a first slide rail and a second slide rail of different heights; the first slide rail and the second slide rail are symmetrically arranged on both sides of the retrieval opening; the first slide rail includes an arc segment and a sliding segment connected in sequence, the arc segment is located on the side of the sliding segment closer to the front of the cabinet; the center of the arc segment faces the bottom of the cabinet, and the length direction of the sliding segment is along the front-back direction of the cabinet;

[0008] The first door has two sides that slide along the first track; the first door includes a horizontal section and a curved section connected to each other, the curved section being located on the side of the horizontal section near the front of the cabinet; the center of the curved section faces the bottom of the cabinet;

[0009] The second door body, with both sides of the second door body sliding along the second slide rail;

[0010] A door closing structure is provided for resetting the second door.

[0011] In this technical solution, the freezer's design prioritizes user convenience and efficient access. The optimized cabinet structure, combined with a unique sliding mechanism, provides users with a convenient way to store and retrieve items. When the first door is pushed, it moves towards the rear of the cabinet along the arc of the first slide, rotating simultaneously. At the same time, the second door is pushed towards the rear of the cabinet by the first door, opening the cabinet's opening. Because the first door rotates slightly, most of its curved section is located below the second door, reducing obstruction of the cabinet opening and facilitating user access to items. Furthermore, a closing mechanism is included; pulling the first door back to its original position resets the second door as well, completely closing the cabinet opening without requiring the second door to be pulled separately, enhancing user convenience.

[0012] In some embodiments, the sliding structure further includes symmetrically arranged fixing grooves; the freezer also includes a third door, which is disposed on the rear side of the freezer, and the two sides of the third door are inserted into the fixing grooves.

[0013] In this technical solution, the first, second, and third doors are stacked together when the cabinet opening is reached by the second and first doors. The addition of the third door and symmetrical mounting slots further expands accessibility and space utilization efficiency. The design of the third door allows it to be stably inserted into the mounting slots; this configuration not only optimizes door guidance and support but also increases the freezer's sealing and insulation performance.

[0014] In some embodiments, the sliding section, the second slide, and the fixing groove are parallel to each other.

[0015] The technical solution ensures that the sliding directions of the first and second doors are the same, and that the first and second doors can be stacked with the third door. This provides a stable and efficient sliding trajectory for the first and second doors, simplifies the manufacturing process of the freezer, and improves the stability and durability of the structure. This design further ensures smooth opening and closing of the first and second doors, reduces friction and wear, and extends the service life of the freezer.

[0016] In some embodiments, the door closing structure is a door closer, which includes a housing and a coil spring and a pull rope disposed within the housing. One end of the pull rope is connected to the coil spring, and the housing and the other end of the pull rope are respectively connected to the front of the second door and the cabinet.

[0017] In this technical solution, the door closer can automatically and efficiently reset the second door. When closing the second door, there is no need for manual operation, saving manpower and simplifying the process.

[0018] In some embodiments, the closing structure includes a connecting rope, one end of which is connected to the end of the first door near the front of the cabinet, and the other end of which is connected to the second door.

[0019] In this technical solution, when the first door is opened, it moves closer to the second door, the connecting rope is loosened, and the first door pushes the second door to move together. When the first door is pulled to close the cabinet opening, it gradually moves away from the second door. At this time, the connecting rope is tightened, and the first door pulls the second door to move synchronously, thus closing the second door. This eliminates the need for manual pulling of the second door, making operation convenient.

[0020] In some embodiments, the door closing structure is a cylinder, which includes a cylinder body and an output shaft. The output shaft is slidably connected to the cylinder body along the length direction of the second slide rail. The cylinder body and the output shaft are respectively connected to the cabinet and the second door.

[0021] In this technical solution, a cylinder pushes the second door, causing it to slide within the second track. The cylinder not only ensures the second door returns to its original position smoothly and accurately but also provides additional force, reducing the user's effort. In particular, the connection design between the output shaft and the cylinder ensures smooth and reliable closing action, while the cylinder's structure also helps absorb and mitigate potential impacts during closing, protecting the door and cabinet from damage.

[0022] In some embodiments, a first sensor is provided on the cabinet. The first sensor is used to detect the first door. When the first sensor detects that the first door is in contact with the front side of the cabinet, the first sensor controls the cylinder to drive the second door to reset.

[0023] In this technical solution, a first sensor is used to monitor the position of the first door in real time. When the first door reaches the designated position, the first sensor immediately triggers a cylinder, automatically resetting the second door. This automated control not only reduces the user's workload but also improves the safety and convenience of using the freezer, ensuring that the door maintains the correct position at all times, thereby maintaining a stable temperature inside the freezer.

[0024] In some embodiments, the reset structure is a tension spring, one end of which is connected to the side of the second door near the rear of the cabinet; the other end of which is connected to the end of the second slide near the front of the cabinet.

[0025] In the technical solution, the tension spring is a commonly used standard component, which is convenient to procure. When the first door is pushed, the push block of the first door moves the second door to the rear of the cabinet, and the tension spring is stretched. The tension spring always exerts a force that pulls the second door closer to the front of the cabinet. When the first door is pulled back to its initial position to close the cabinet's access opening, the second door slides to the end of the second slide rail near the front of the cabinet under the action of the tension spring, thus resetting.

[0026] In some embodiments, first rollers are provided on both sides of the curved section, and second rollers are provided on both sides of the horizontal section. The two first rollers roll on the two first slides respectively; the two second rollers roll on the two first slides respectively.

[0027] In the technical solution, the friction between the first door and the first track is reduced by the first roller and the second roller, making it easier for the user to open the first door.

[0028] In some embodiments, the arc segment is provided with a first limiting part; when the first door closes the cabinet opening, the first roller is limited by the first limiting part;

[0029] The sliding section is provided with a second limiting part; when the opening of the cabinet is opened, the second roller is limited by the second limiting part.

[0030] In the technical solution, the first door is limited by a first limiting part to restrict the first door when the cabinet is closed, thereby preventing air leakage and ensuring a proper seal. The first door is also limited by a second limiting part to restrict the first door when the cabinet is fully open, preventing the first door from automatically moving and closing, which would make it inconvenient to retrieve or place goods.

[0031] Based on the above technical solution, in this embodiment of the invention, the design of the freezer focuses on user convenience and storage efficiency. The optimized cabinet structure, combined with a unique sliding mechanism, provides users with a convenient way to store and retrieve items. When the first door is pushed, it moves towards the rear of the cabinet along the arc section of the first slide rail, while simultaneously rotating. At the same time, the second door is pushed towards the rear of the cabinet by the first door, opening the cabinet opening. Because the first door rotates to a certain extent, most of the curved section of the first door is located below the second door, reducing the obstruction of the cabinet opening by the first door and facilitating user access to items. Furthermore, a closing mechanism is provided; pulling the first door back to its original position resets the second door as well, achieving complete closure of the cabinet opening without the need to pull the second door separately, thus enhancing user convenience. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0033] Figure 1 This is a schematic diagram of the overall structure of a freezer according to an embodiment of the present invention;

[0034] Figure 2 This is a front view of an embodiment of the freezer of the present invention;

[0035] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0036] Figure 4 This is a schematic diagram of the structure of the first door of a refrigerator according to an embodiment of the present invention;

[0037] Figure 5 This is an exploded view of the first door of a refrigerator according to an embodiment of the present invention;

[0038] Figure 6 This is a side view of the crossbeam in one embodiment of the freezer of the present invention;

[0039] Figure 7 This is a schematic diagram of the structure of the first door of a refrigerator according to an embodiment of the present invention;

[0040] Figure 8 This is a side view of the first door of a refrigerator according to an embodiment of the present invention;

[0041] Figure 9 This is an exploded view of the first door of a refrigerator according to an embodiment of the present invention;

[0042] Figure 10 This is a schematic diagram of the structure of the crossbeam in one embodiment of the freezer of the present invention;

[0043] Figure 11 This is a side view of the crossbeam in one embodiment of the freezer of the present invention.

[0044] Figure 12 This is a schematic diagram of the overall structure of the first door of the freezer according to an embodiment of the present invention;

[0045] Figure 13 This is a schematic diagram of the overall structure of the second door of the freezer according to an embodiment of the present invention;

[0046] Figure 14 This is a schematic diagram of the overall structure of a freezer according to an embodiment of the present invention;

[0047] Figure 15 This is a side view of the first door of a refrigerator according to an embodiment of the present invention;

[0048] Figure 16 This is a side view of the first door of a refrigerator according to an embodiment of the present invention;

[0049] Figure 17 This is a diagram showing the changes in the first door of the freezer according to an embodiment of the present invention when it is opened.

[0050] In the picture:

[0051] 100. Cabinet body; 200. Crossbeam; 300. First slide rail; 301. Arc section; 302. Sliding section; 400. Second slide rail; 500. First door body; 501. Curved section; 502. Horizontal section; 600. Second door body; 700. Third door body; 800. Push block; 900. First roller; 110. Second roller; 130. Tension spring; 140. Cylinder; 141. Cylinder body; 142. Output shaft; 150. Connecting rope; 160. Door closer. Detailed Implementation

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] Please refer to all the accompanying drawings. In an illustrative embodiment of the freezer of the present invention, the freezer includes: a cabinet body 100, a sliding structure, a first door 500, a second door 600, and a closing structure; wherein, the top of the cabinet body 100 is provided with a loading and unloading opening, and the cabinet body 100 has a front side and a rear side.

[0057] A sliding structure is provided at the opening of the cabinet 100; the sliding structure includes a first slide rail 300 and a second slide rail 400 with different heights; the first slide rail 300 and the second slide rail 400 are symmetrically arranged on both sides of the retrieval opening; the first slide rail 300 includes an arc segment 301 and a sliding segment 302 connected in sequence, the arc segment 301 is located on the side of the sliding segment 302 near the front of the cabinet 100; the center of the arc segment 301 faces the bottom of the cabinet 100, and the length direction of the sliding segment 302 is arranged along the front and back direction of the cabinet 100.

[0058] The first door 500 slides along the first slide rail 300 on both sides. The first door 500 includes a horizontal section 502 and a curved section 501 connected to each other. The curved section 501 is located on the side of the horizontal section 502 near the front of the cabinet 100. The center of the curved section 501 faces the bottom of the cabinet 100. The second door 600 slides along the second slide rail 400 on both sides. A closing structure is used to reset the second door 600.

[0059] Through the above design, the freezer prioritizes user convenience and efficient storage and retrieval. The optimized structural design of the cabinet 100, combined with a unique sliding mechanism, provides users with a convenient way to store and retrieve items. When the first door 500 is pushed, it rotates as it moves towards the rear of the cabinet 100 along the arc segment 301 of the first slide rail 300. Simultaneously, the second door 600 is pushed by the first door 500 towards the rear of the cabinet 100, opening the cabinet 100. The curved segment 501 of the first door 500 is raised, and the horizontal segment 502 is lowered; therefore, most of the curved segment 501 of the first door 500 is located below the second door 600, reducing the obstruction of the cabinet 100 opening by the first door 500 and facilitating user access to items. It is also equipped with a closing mechanism. Pulling the first door 500 to reset it will reset the second door 600 together, achieving complete closure of the opening of the cabinet 100. There is no need to pull the second door 600 separately, which is convenient for users.

[0060] In some embodiments, the cabinet 100 is rectangular, therefore the opening of the cabinet 100 is also rectangular. The width direction of the cabinet 100 extends from its front to its rear. The length direction of the first slide rail 300 and the second slide rail 400 is along the width direction of the cabinet 100. Therefore, in this application, the first door 500 and the second door 600 slide along the width direction of the opening of the cabinet 100. In the prior art, the slide rail is arranged along the width direction of the opening of the cabinet 100, and the door slides along the length direction of the cabinet 100. Therefore, in the prior art, the friction distance between the door and the slide rail is relatively long when the door is opened, resulting in greater friction. In this application, the friction distance between the first door 500 and the second door 600 and the slide rail is shorter when the door is opened, resulting in less friction, making it easier for the user to open the opening of the cabinet 100.

[0061] Taking a cabinet 100 with an opening length of 3 meters and a width of 1.5 meters as an example. In the prior art, the opening of the cabinet 100 has three doors that slide along the length of the cabinet 100. If it is necessary to open the opening of the cabinet 100 by one-third, the doors need to be pushed and slid by one meter. However, in this application, by pushing the first door 500 along the width of the cabinet 100, only one meter is needed to open the opening of the cabinet 100 by one-third. The distance that the user needs to push the first door 500 in this application is much smaller than that in the prior art, making it more convenient for users.

[0062] In some embodiments, the cabinet 100 has a front side and a rear side. The two sides in the width direction of the cabinet 100 are the front side and the rear side of the cabinet 100, respectively.

[0063] In some embodiments, the third door 700 is disposed on the rear side of the cabinet 100. When the first door 500, the second door 600 and the third door 700 close the opening of the cabinet 100, the first door 500 is located on the front side of the cabinet 100, and the second door 600 is located between the first door 500 and the third door 700.

[0064] In some embodiments, the sliding structure further includes symmetrically arranged fixing slots; the freezer also includes a third door 700, which is disposed on the rear side of the cabinet 100, with both sides of the third door 700 inserted into the fixing slots. When the second door 600 and the first door 500 open the cabinet 100, the first door 500, the second door 600, and the third door 700 are stacked together. By adding the third door 700 and the symmetrical fixing slots, the access functionality and space utilization efficiency are further expanded. The design of the third door 700 allows it to be stably inserted into the fixing slots; this configuration not only optimizes the door's guidance and support but also increases the freezer's sealing and insulation performance.

[0065] In some embodiments, the sliding section 302, the second slide rail 400, and the fixing groove are parallel to each other. This ensures that the sliding directions of the first door 500 and the second door 600 are the same, and that the first door 500 and the second door 600 can be stacked with the third door 700. This provides a stable and efficient sliding trajectory for the first door 500 and the second door 600, simplifies the manufacturing process of the freezer, and improves the stability and durability of the structure. This design further ensures smooth opening and closing of the first door 500 and the second door 600, reduces friction and wear, and extends the service life of the freezer.

[0066] In some embodiments, a push block 800 is provided on the first door 500, which abuts against the second door 600. When the first door 500 is pushed, it slides along the first slide rail 300, and the push block 800 abuts against the second door 600. The first door 500 pushes the second door 600 to move synchronously through the push block 800, thereby opening the retrieval port of the cabinet 100. This achieves the movement of both the second door 600 and the first door 500.

[0067] In some embodiments, the push block 800 is disposed on the side of the first door 500 away from the bottom of the cabinet 100 and close to the front side of the cabinet 100.

[0068] In some embodiments, the door closing structure is a door closer 160, which includes a housing and a coil spring and a pull rope disposed within the housing. The housing is located on the front side inside the cabinet 100. One end of the pull rope is connected to the coil spring, and the other end is connected to the second door 600. The door closer 160 can automatically and efficiently reset the second door 600. When closing the second door 600, manual pulling of the second door 600 is not required, saving manpower and simplifying operation.

[0069] In another embodiment, the housing of the door closer 160 is disposed on the second door 600, and the end of the pull rope away from the door closer 160 is connected to the front side of the cabinet 100.

[0070] Furthermore, the coil spring is wound inside the housing. The end of the pull cord is connected to the end of the outer coil of the coil spring. The pull cord is used to pass through and slide within the housing. When the second door 600 is pushed away from the first door 500 by the push block 800 on the first door 500, the second door 600 pulls the pull cord to pull it out of the housing, at which point the coil spring is unwound. However, because the push block 800 on the first door 500 is in contact with the second door 600, the force of the coil spring cannot pull the second door 600 and the first door simultaneously through the pull cord. When the first door 500 is pulled to close the cabinet 100 opening, reducing the support for the second door 600, the force of the coil spring is sufficient to drive the pull cord to pull the second door 600 back to its original position.

[0071] In some embodiments, the coil spring is further unwound inside the housing. The end of the pull cord is connected to the end of the outer coil of the coil spring. The pull cord is used to pass through and slide within the housing. When the second door 600 is pushed away from the first door 500 by the push block 800 on the first door 500, the second door 600 pulls the pull cord to pull it out of the housing, at which point the coil spring is wound up. However, because the push block 800 on the first door 500 is in contact with the second door 600, the force of the coil spring cannot pull the second door 600 and the first door simultaneously through the pull cord. When the first door 500 is pulled to close the cabinet 100 opening, reducing the support for the second door 600, the force of the coil spring is sufficient to drive the pull cord to pull the second door 600 back to its original position.

[0072] In some embodiments, the closing structure includes a connecting rope 150, one end of which is connected to the front end of the first door 500 near the cabinet 100, and the other end of which is connected to the second door 600. When the first door 500 is opened, it moves closer to the second door 600, the connecting rope 150 is loosened, and the first door 500 pushes the second door 600 to move together. When the first door 500 is pulled to close the opening of the cabinet 100, it gradually moves away from the second door 600, at which point the connecting rope 150 is tightened, enabling the first door 500 to pull the second door 600 to move synchronously, thus closing the second door 600; this eliminates the need for manual pulling of the second door 600, making operation convenient.

[0073] In some embodiments, the connecting rope 150 is positioned above the first door body 500 to prevent the connecting rope 150 from being interfered with by the horizontal segment 502 of the first door body 500.

[0074] It is worth noting that when the first door 500, the second door 600 and the third door 700 close the opening of the cabinet 100, the connecting rope 150 is in a taut state.

[0075] In some embodiments, to allow for slack, the connecting rope 150 may be in a non-taut state when the first door 500, the second door 600 and the third door 700 close the opening of the cabinet 100.

[0076] Furthermore, when the first door 500, the second door 600, and the third door 700 close the opening of the cabinet 100, the length of the connecting rope 150 is greater than the straight-line distance between the two connection points of the connecting rope 150 and the first door 500 and the second door 600, respectively.

[0077] Furthermore, the length of the rope minus the straight-line distance between the two connection points is between 0 and 1 centimeter.

[0078] In some embodiments, the door closing structure is a cylinder 140, which includes a cylinder body 141 and an output shaft 142. The output shaft 142 is slidably connected to the cylinder body 141 along the length of the second slide rail 400. The cylinder body 141 and the output shaft 142 are respectively connected to the cabinet 100 and the second door 600. The second door 600 is pushed by the cylinder 140, thus sliding in the second slide rail 400. The use of the cylinder 140 not only ensures that the second door 600 returns to its original position smoothly and accurately, but also provides additional force support, reducing the user's operating effort. In particular, the connection design between the output shaft 142 and the cylinder body 141 ensures the smoothness and reliability of the door closing action. At the same time, the structure of the cylinder 140 also helps to absorb and mitigate the impact that may be generated during the closing process, protecting the door and cabinet 100 from damage.

[0079] In some embodiments, cylinder 140 and output shaft 142 are coaxially arranged. One end of cylinder body 141 away from output shaft 142 is connected to the front side inside cabinet 100. One end of output shaft 142 away from cylinder body 141 is connected to second door 600. Output shaft 142 retracts to cylinder body 141 to drive second door 600 to reset.

[0080] In some embodiments, cylinder 140 and output shaft 142 are coaxially arranged. One end of cylinder body 141 away from output shaft 142 is connected to second door 600. The other end of output shaft 142 away from cylinder body 141 is connected to the front side inside cabinet 100. Output shaft 142 retracts to cylinder body 141 to reset second door 600.

[0081] In some embodiments, cylinder 140 and output shaft 142 are coaxially arranged. The end of cylinder 141 away from output shaft 142 is connected to the rear side inside cabinet 100. The end of output shaft 142 away from cylinder 141 is connected to second door 600. Output shaft 142 is pushed out to the side away from cylinder 141 to drive second door 600 to reset.

[0082] In some embodiments, cylinder 140 and output shaft 142 are coaxially arranged. The end of cylinder 141 away from output shaft 142 is connected to the second door 600. The end of output shaft 142 away from cylinder 141 is connected to the rear side inside cabinet 100. Output shaft 142 is pushed out to the side away from cylinder 141 to drive the second door 600 to reset.

[0083] It is worth noting that the cabinet 100 is equipped with an air pump or air cylinder for supplying gas to the cylinder 140. When the cylinder 140 is not in motion, the pressure inside the cylinder 140 is the same as the external pressure, and the output shaft 142 can be pushed to move in the cylinder 141, which facilitates the opening of the second door 600 next time.

[0084] In some embodiments, a first sensor is provided on the cabinet 100. The first sensor is used to detect the first door 500. When the first sensor detects that the first door 500 is in contact with the front of the cabinet 100, the first sensor controls the cylinder 140 to reset the second door 600. By setting the first sensor, real-time monitoring of the position of the first door 500 is achieved. When the first door 500 reaches the designated position, the first sensor immediately triggers the cylinder 140, automatically resetting the second door 600. This automated control not only reduces the user's operational burden but also improves the safety and convenience of using the freezer, ensuring that the door maintains the correct position at all times, thereby maintaining a stable temperature inside the freezer.

[0085] In some embodiments, the first sensor is a proximity sensor or a contact sensor. The first sensor is disposed on the cabinet 100. When the first sensor detects that the first door 500 has moved to one end in front of the opening of the cabinet 100, that is, the end of the first slide rail 300 away from the second door 600, the first sensor acquires a signal and outputs an electrical signal to the air supply component. The air supply component supplies or draws air to the cylinder 140, thereby moving the output shaft 142 on the cylinder 140 to reset the second door 600.

[0086] In some embodiments, the first sensor is an optical sensor. When the first door 500 moves to one end in front of the opening of the cabinet 100, that is, the end of the first slide rail 300 away from the second door 600, light is blocked, and the first sensor outputs an electrical signal to the air supply component.

[0087] In some embodiments, the first sensor may be disposed on the first door body 500.

[0088] In some embodiments, a second sensor is also provided on the cabinet 100. The second sensor is used to detect the position of the second door 600. When the second sensor detects that the second door 600 has been reset, the second sensor sends an electrical signal to the air supply component to stop the output of the cylinder 140.

[0089] Furthermore, after the second sensor detects that the second door 600 has been reset, the second sensor also sends an electrical signal to the air supply component, connecting the inside of the cylinder 140 to the outside, so that the air pressure inside the cylinder body 141 of the cylinder 140 is the same as or close to the external air pressure. This allows the output shaft 142 to slide within the cylinder body 141. This ensures that when the cabinet 100 is opened again, the push block 800 on the first door can push the second door to move.

[0090] In some embodiments, the second sensor may also be disposed on the second door 600. The type and detection method of the second sensor may be the same as those of the first sensor.

[0091] In some embodiments, the reset structure is a tension spring 130. One end of the tension spring 130 is connected to the side of the second door 600 near the rear of the cabinet 100; the other end of the tension spring 130 is connected to the end of the second slide rail 400 near the front of the cabinet 100. The tension spring 130 is a commonly used standard part, which is convenient to purchase. When the first door 500 is pushed, the push block 800 of the first door 500 drives the second door 600 to move towards the rear of the cabinet 100, the tension spring 130 is stretched. The tension spring 130 always exerts a force pulling the second door 600 towards the front of the cabinet 100. When the first door 500 is pulled back to its initial position to close the access port of the cabinet 100, the second door 600 slides to the end of the second slide rail 400 near the front of the cabinet 100 under the action of the tension spring 130, thus resetting.

[0092] In some embodiments, first rollers 900 are respectively provided on both sides of the curved section 501, and second rollers 110 are respectively provided on both sides of the horizontal section 502. The two first rollers 900 roll on the two first slide rails 300 respectively; the two second rollers 110 roll on the two first slide rails 300 respectively. The first rollers 900 and the second rollers 110 reduce the friction between the first door body 500 and the first slide rail 300 and the second slide rail 400, making it easier for the user to open the first door body 500.

[0093] In some embodiments, a first limiting part is provided on the arc segment 301; when the first door 500 closes the opening of the cabinet 100, the first roller 900 is limited by the first limiting part.

[0094] In some embodiments, a second limiting part is provided on the sliding section 302; when the opening of the cabinet 100 is opened, the second roller 110 is limited by the second limiting part.

[0095] The first door 500 is limited by the first limiting part, thereby limiting the first door 500 when the cabinet 100 is closed, and preventing air leakage that could lead to poor sealing. The first door 500 is limited by the second limiting part, thereby limiting the first door 500 when the cabinet 100 is fully open, and preventing the first door 500 from automatically moving and closing, which would make it inconvenient to retrieve or place goods.

[0096] In some embodiments, a crossbeam 200 is provided at the opening of the cabinet 100.

[0097] Through the description of several embodiments of the freezer of the present invention, it can be seen that the embodiments of the freezer of the present invention have at least one or more of the following advantages:

[0098] 1. The freezer's design prioritizes user convenience and efficient access. The optimized structural design of the cabinet 100, combined with a unique sliding mechanism, provides users with a convenient way to store and retrieve items. When the first door 500 is pushed, it moves towards the rear of the cabinet 100 along the arc segment 301 of the first slide rail 300, while simultaneously rotating. At the same time, the second door 600 is pushed towards the rear of the cabinet 100 by the first door 500, opening the cabinet 100's opening. Because the first door 500 rotates slightly, most of the curved segment 501 of the first door 500 is located below the second door 600, reducing the obstruction of the cabinet 100's opening by the first door 500 and facilitating user access to items. Furthermore, a closing mechanism is included; pulling the first door 500 back to its original position resets the second door 600 as well, achieving complete closure of the cabinet 100's opening without requiring the second door 600 to be pulled separately, enhancing user convenience.

[0099] 2. The door closing structure is a door closer 160, which includes a housing and a coil spring and a pull rope housed within the housing. The housing is located on the front side inside the cabinet 100. One end of the pull rope is connected to the coil spring, and the other end is connected to the second door 600. The door closer 160 can automatically and efficiently reset the second door 600. When closing the second door 600, manual operation is not required, saving manpower and simplifying operation.

[0100] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0101] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A freezer, characterized in that, include: The cabinet has an access opening at the top and has a front and a rear side. A sliding structure is provided at the opening of the cabinet; the sliding structure includes a first slide rail and a second slide rail of different heights; the first slide rail and the second slide rail are symmetrically arranged on both sides of the retrieval opening; the first slide rail includes an arc segment and a sliding segment connected in sequence, the arc segment is located on the side of the sliding segment closer to the front of the cabinet; the center of the arc segment faces the bottom of the cabinet, and the length direction of the sliding segment is along the front-back direction of the cabinet; The first door has two sides that slide along the first track; the first door includes a horizontal section and a curved section connected to each other, the curved section being located on the side of the horizontal section near the front of the cabinet; the center of the curved section faces the bottom of the cabinet; The second door body, with both sides of the second door body sliding along the second slide rail; A door closing structure is provided for resetting the second door.

2. The freezer according to claim 1, characterized in that, The sliding structure also includes symmetrically arranged fixing grooves; the freezer also includes a third door, which is located on the rear side of the freezer, and the two sides of the third door are inserted into the fixing grooves.

3. The freezer according to claim 1, characterized in that, The sliding section, the second slide rail, and the fixed groove are parallel to each other.

4. The freezer according to claim 1, characterized in that, The door closing structure is a door closer, which includes a housing and a coil spring and a pull rope disposed in the housing. One end of the pull rope is connected to the coil spring, and the housing and the other end of the pull rope are respectively connected to the front of the second door and the cabinet.

5. The freezer according to claim 1, characterized in that, The closing structure includes a connecting rope, one end of which is connected to the end of the first door near the front of the cabinet, and the other end of which is connected to the second door.

6. The freezer according to claim 1, characterized in that, The door closing structure is a cylinder, which includes a cylinder body and an output shaft. The output shaft is slidably connected to the cylinder body along the length of the second slide rail. The cylinder body and the output shaft are respectively connected to the cabinet and the second door.

7. The freezer according to claim 6, characterized in that, The cabinet is equipped with a first sensor, which is used to detect the first door. When the first sensor detects that the first door is in contact with the front side of the cabinet, the first sensor controls the cylinder to drive the second door to reset.

8. The freezer according to claim 7, characterized in that, The reset structure is a tension spring, one end of which is connected to the side of the second door near the rear of the cabinet; the other end of which is connected to the end of the second slide near the front of the cabinet.

9. The freezer according to any one of claims 1 to 8, characterized in that, The curved section is provided with first rollers on both sides, and the horizontal section is provided with second rollers on both sides. The two first rollers and the two second rollers roll on the two first slides respectively.

10. The freezer according to claim 9, characterized in that, A first limiting part is provided on the arc segment; when the first door closes the cabinet opening, the first roller is limited by the first limiting part. The sliding section is provided with a second limiting part; when the opening of the cabinet is opened, the second roller is limited by the second limiting part.

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