Door assembly and refrigeration equipment

Abstract

The door assembly comprises a door liner and a shelf, the door liner is provided with two side walls in the left-right direction, and the inner side of at least one side wall is connected with a protruding structure; the shelf is arranged on the door liner and can move up and down along the door liner, the shelf comprises a shelf body and an elastic structure, at least one side, in the left-right direction, of the shelf body is provided with a vertically-through guide groove, the guide groove corresponds to the protruding structure, and the elastic structure is arranged in the guide groove and connected with the shelf body; the elastic structure is configured as follows: when the shelf moves upwards relative to the door liner, the elastic structure can be pressed by the convex structure to generate compression deformation, so that the elastic structure crosses the convex structure; when the elastic structure moves to the position above the protruding structure, the elastic structure rebounds and resets and is matched with the protruding structure to support the shelf. According to the door assembly, the position adjusting mode of the shelf can be simplified, and occupied space can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of refrigeration technology, and in particular to door components and refrigeration equipment. Background Technology

[0002] Door frames typically have multiple slot groups spaced vertically. Shelves can be inserted into these slot groups to cooperate with the door frames and fix their position. However, when it is necessary to adjust the height of the shelf, the shelf must first be completely pulled out of the current slot, then the shelf must be raised, and finally the shelf must be aligned and inserted into the target slot. This operation is not convenient and takes up a lot of space. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a door assembly that simplifies the shelf position adjustment process and helps reduce space occupation.

[0004] This utility model also proposes a refrigeration device having the above-mentioned shelf.

[0005] A door assembly according to a first aspect of the present invention includes a door insert and a shelf;

[0006] The door panel has two sidewalls along the left-right direction, and at least one sidewall has a protruding structure connected to its inner side;

[0007] The shelf is installed on the door frame and can move up and down along the door frame. The shelf includes a shelf body and an elastic structure. The shelf body has a guide groove that runs through the door frame on at least one side in the left-right direction. The guide groove is correspondingly provided with the protruding structure. The elastic structure is installed in the guide groove and connected to the shelf body.

[0008] The elastic structure is configured as follows:

[0009] When the shelf moves upward relative to the door frame, the elastic structure can be compressed and deformed by the pressure of the protruding structure, so that the elastic structure can pass over the protruding structure;

[0010] When the elastic structure moves above the raised structure, the elastic structure springs back to its original position and cooperates with the raised structure to support the shelf.

[0011] The shelf according to the embodiments of this utility model has at least the following beneficial effects: When the shelf moves upward, the elastic structure can be compressed and deformed by the pressure of the protruding structure, thus passing over the protruding structure. After passing over the protruding structure, the elastic structure will spring back to its original position. At this time, the protruding structure is used to support the lower side of the elastic structure, realizing the load-bearing of the shelf. At the same time, the protruding structure can enter the guide groove and abut against the groove wall of the guide groove, thereby limiting the back-and-forth swaying of the shelf relative to the door frame and preventing it from falling off. Thus, the shelf of this utility model can complete the position adjustment simply by moving upward, which not only simplifies the adjustment steps but also reduces the occupation of operating space. In addition, since both the elastic structure and the protruding structure can be accommodated in the guide groove, the structure of the door assembly is more compact, which is beneficial to reducing the occupation of storage space.

[0012] According to some embodiments of the present invention, an elastic structure is disposed on the groove wall of the guide groove. The elastic structure includes a first guide wall surface. In the reset state of the elastic structure, the first guide wall surface moves away from the groove wall in a downward direction.

[0013] According to some embodiments of the present invention, the first guide wall is configured as a curved surface, and the curvature of the first guide wall gradually increases from top to bottom.

[0014] According to some embodiments of the present invention, the shelf includes a fixing part, which is located in the guide groove and connected to the groove wall of the guide groove. The fixing part and the groove wall enclose an installation cavity, and a part of the elastic structure is located in the installation cavity.

[0015] According to some embodiments of this utility model, the elastic structure is movably connected to the shelf body in the left-right direction, and the protruding structure can abut against the groove wall of the guide groove in the front-back direction.

[0016] According to some embodiments of the present invention, the protruding structure includes a second guide wall surface, which is located away from the side wall connected to the protruding structure in a bottom-to-top direction.

[0017] According to some embodiments of the present invention, the second guide wall is configured as a curved surface, and the curvature of the second guide wall gradually increases from bottom to top.

[0018] According to some embodiments of the present invention, the protruding structure includes a main body and a rolling part, the rolling part is rotatably connected to the main body, the rolling part protrudes outward from the outer surface of the protruding structure, and the rolling part is used to abut against the elastic structure.

[0019] According to some embodiments of the present invention, the main body includes a second guide wall surface, the second guide wall surface includes a central region, and the two ends opposite to the second guide wall in the central region are arranged at intervals along the direction from top to bottom. A rolling part is rotatably connected in the central region, and the rolling part protrudes outward from the surface of the central region.

[0020] The refrigeration device according to a second aspect embodiment of the present invention includes the door assembly of any of the above embodiments.

[0021] The refrigeration equipment according to the embodiments of the present utility model has at least the following beneficial effects: the door assembly can adjust the position of the shelf more flexibly, thereby making it more convenient to adjust the storage space layout of the refrigeration equipment, which is beneficial to storing items of different shapes more conveniently.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of the structure of the door assembly of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of the shelf of this utility model;

[0026] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0027] Figure 4 This is a structural schematic diagram of the door assembly from another perspective of the present invention;

[0028] Figure 5 This is a schematic diagram of the shelf structure from another perspective of this utility model;

[0029] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0030] Figure 7 This is a schematic diagram showing the projectile and the protruding structure abutting each other in their initial positions.

[0031] Figure 8 This is a schematic diagram showing the projectile and the protruding structure abutting each other at the middle position of this utility model.

[0032] Figure 9 This is a schematic diagram showing the projectile and the protruding structure abutting at their final positions.

[0033] Figure 10 This is a schematic diagram of another embodiment of the present invention, showing the projectile abutting against the protruding structure.

[0034] Reference numerals: door liner 100, raised structure 110, main body 111, second guide wall 1111, rolling part 112;

[0035] Shelf 200, shelf body 210, guide groove 211, elastic structure 220, elastic element 221, bullet head 222, first guide wall 2221, fixing part 230. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] In related technologies, shelves typically include two types. The first type of shelf is fixedly connected to the door panel, and the position of the shelf is not adjustable, resulting in a fixed layout of the storage space inside the refrigeration equipment, which cannot be flexibly adjusted according to the shape of the stored items.

[0041] The second type of shelf is detachably connected to the door frame. The door frame has vertically extending support grooves, and the shelf engages with these grooves via a plug-in connection, relying on the bottom wall of the grooves to support the shelf. However, when adjusting the shelf's position, the process is cumbersome and inconvenient. First, the shelf must be pulled vertically upwards; then, it must be moved backwards, gradually moving it away from the door frame; next, it must be moved upwards to a suitable height; then, it must be moved forwards, bringing it closer to the door frame; finally, the shelf must be inserted vertically downwards into the support groove to complete the adjustment.

[0042] Reference Figures 1 to 3 The door assembly of this utility model embodiment includes a door frame 100 and a shelf 200. The door frame 100 has two side walls along the left-right direction, which are arranged at intervals. At least one side wall has a protruding structure 110 connected to its inner side. The inner side of the side wall of the door frame 100 should be understood as the side where the two side walls face each other. The shelf 200 is disposed on the door frame 100 and can move up and down along the door frame 100. The shelf 200 includes a shelf body 210 and an elastic structure 220. At least one side of the shelf body 210 along the left-right direction is provided with a vertically penetrating guide groove 211. The guide groove 211 is correspondingly disposed with the protruding structure 110, that is, when the shelf 200 moves up and down relative to the door frame 100, the protruding structure 110 can be aligned and inserted into the guide groove 211. The elastic structure 220 is disposed in the guide groove 211 and connected to the shelf 200. The elastic structure 220 may be completely located in the guide groove 211 or partially located in the guide groove 211. The guide groove 211 is used to accommodate at least a part of the elastic structure 220, making the structure of the shelf 200 more compact and reducing the space occupied by storage.

[0043] The elastic structure 220 is configured such that when the shelf 200 moves upward relative to the door frame 100, the elastic structure 220 can be compressed and deformed by the pressure of the protruding structure 110, allowing the elastic structure 220 to pass over the protruding structure 110. The elastic structure 220 may include a spring or other structure capable of elastic deformation. When the elastic structure 220 moves above the protruding structure 110, the elastic structure 220 springs back to its original position and cooperates with the protruding structure 110 to support the shelf 200. That is, the protruding structure 110 supports the lower side of the elastic structure 220, thus bearing the load of the shelf 200. Therefore, the shelf 200 can be adjusted from the lower layer to the upper layer simply by moving upward, making the adjustment process more convenient.

[0044] In addition, the protruding structure 110 can be aligned and inserted into the guide groove 211. The protruding structure 110 is used to abut against the groove wall of the guide groove 211, effectively preventing the shelf 200 from shaking back and forth relative to the door frame 100 and falling off, thus ensuring the stability of the shelf 200 assembly. At the same time, the guide groove 211's reception of the protruding structure 110 makes the door assembly structure more compact.

[0045] Reference Figures 1 to 3Specifically, the inner sides of both the left and right side walls of the door frame 100 are connected to protruding structures 110, and both sides of the shelf 200 are provided with vertically connected guide grooves 211. The two protruding structures 110 and the two guide grooves 211 are arranged in a one-to-one correspondence, so that when the shelf 200 moves vertically relative to the door frame 100, the two protruding structures 110 can enter or disengage from the guide grooves 211 one-to-one. The cross-sectional shape of the guide grooves 211 can be square, U-shaped, V-shaped, or dovetail-shaped, etc., which have a guiding function. The protruding structures 110 abut against the groove walls of the guide grooves 211 to prevent the shelf 200 from separating from the door frame 100. Simultaneously, the cooperation of the two also provides guidance for the vertical movement of the shelf 200, making the position adjustment of the shelf 200 smoother.

[0046] When the shelf 200 moves upward relative to the door frame 100, the protruding structures 110 connected to the left and right side walls of the door frame 100 can align and enter the corresponding guide grooves 211. That is, when the shelf 200 and the door frame 100 are assembled, both the elastic structure 220 and the protruding structure 110 are located in the guide grooves 211, making the door assembly structure more compact. As the shelf 200 moves upward relative to the door frame 100, the elastic structure 220 can contact the protruding structure 110 and undergo compression deformation due to the pressure of the protruding structure 110, so that the elastic structure 220 passes over the protruding structure 110, ensuring the upward movement of the shelf 200. The direction of the compression deformation of the elastic structure 220 can be either left-right or front-back. When the elastic structure 220 moves above the protruding structure 110, the elastic structure 220 springs back to its original position, and the protruding structure 110 is supported on the lower side of the elastic structure 220 to restrict the shelf 200 from moving downward. Before this, the shelf 200 can move freely up and down relative to the door frame 100.

[0047] It should be noted that, in the context of this utility model, the left and right directions are defined by the user's own left and right position when facing the door 100, and the front refers to the direction closer to the door 100; the rear refers to the direction farther away from the door 100.

[0048] Reference Figures 1 to 3 If it is necessary to adjust the shelf 200 from the upper layer to the lower layer, the operation steps are as follows: First, move the shelf 200 upwards until the protruding structures 110 connected to the left and right side walls of the door frame 100 are completely disengaged from the corresponding guide grooves 211, thus separating the shelf 200 from the protruding structures 110. After separation, move the shelf 200 downwards. At this time, the lower protruding structure 110 can enter from the upper or lower end of the guide groove 211. For example, if you choose to enter from the lower end of the guide groove 211, you need to first align the lower end of the guide groove 211 with the protruding structure 110, and then move the shelf 200 downwards. As the shelf 200 moves downwards, the elastic structure 220 will gradually approach and abut against the upper side of the protruding structure 110, thus completing the support for the shelf 200.

[0049] Reference Figures 1 to 3 In other embodiments, the left or right side wall of the door frame 100 is connected to a protruding structure 110. Along the left-right direction, the shelf body 210 is provided with a vertically penetrating guide groove 211 on the side facing the protruding structure 110. An elastic structure 220 is disposed in the guide groove 211 and connected to the shelf body 210. Thus, one of the left and right sides of the shelf body 210 is supported by the cooperation of the elastic structure 220 and the protruding structure 110, and the other side of the shelf body 210 is supported by abutting against the door frame 100.

[0050] Reference Figures 1 to 3 In other embodiments, the inner sides of both side walls of the door frame 100 along the left-right direction are connected to multiple protruding structures 110. The number of protruding structures 110 on each side wall corresponds to each other, and the protruding structures 110 on either side wall are distributed vertically at intervals, thus forming multiple sets of protruding structures 110. These multiple sets of protruding structures 110 can cooperate with the elastic structure 220. When the height of the shelf 200 needs to be adjusted, the elastic structure 220 cooperates with the protruding structures 110 at different positions to support the shelf 200 at different heights, which helps to further improve the flexibility and convenience of adjusting the height of the shelf 200.

[0051] Reference Figures 4 to 6 In other embodiments, the elastic structure 220 includes an elastic element 221 and a projectile 222. One end of the elastic element 221 is connected to the shelf body 210, and the other end of the elastic element 221 is connected to the projectile 222. The projectile 222 is movably connected to the shelf body 210. For example, the projectile 222 is connected to the shelf body 210 via a groove or rail. This design allows the projectile 222 to further compress the elastic element 221 when subjected to external force, thereby moving relative to the shelf body 210.

[0052] When the shelf 200 rises relative to the door frame 100, the bullet head 222 can press against the protruding structure 110. The bullet head 222 further compresses the elastic element 221 to avoid the protruding structure 110, so that the bullet head 222 can pass over the protruding structure 110. When the bullet head 222 moves above the protruding structure 110, the elastic element 221 rebounds and drives the bullet head 222 to reset. The protruding structure 110 supports the lower side of the bullet head 222, realizing effective support for the shelf 200. This ensures the stable support and flexible movement of the shelf 200 on the door frame 100.

[0053] Reference Figures 4 to 6In some embodiments, the elastic structure 220 is disposed on the groove wall of the guide groove 211. The elastic structure 220 includes a first guide wall surface 2221. The elastic structure 220 has a compressed state and a reset state. When the elastic structure 220 is compressed and deformed by the protrusion structure 110, it is in the compressed state. When the elastic structure 220 separates from the protrusion structure 110 and springs back to reset, it is in the reset state. In the reset state of the elastic structure 220, the first guide wall surface 2221 moves away from the groove wall in a direction from top to bottom.

[0054] Reference Figures 5 to 7 Taking the elastic structure 220 connected to the right side of the shelf body 210 as an example, the first guide wall 2221 can be an inclined plane extending from the upper left to the lower right, or a curved surface extending from the upper left to the lower right, or a combination of an inclined plane and a curved surface. The first guide wall 2221 is used to abut against the protruding structure 110, so that the relative sliding between the protruding structure 110 and the elastic structure 220 is smoother.

[0055] Reference Figures 7 to 9 In some other embodiments, the projectile 222 is provided with a first guide wall 2221, through which the projectile 222 abuts against the protruding structure 110. The first guide wall 2221 makes the relative sliding between the projectile 222 and the protruding structure 110 more stable and smooth.

[0056] Reference Figures 1 to 3 In other embodiments, the shelf 200 may be provided with three, four, five, or other elastic structures 220. Correspondingly, the inner side wall of the door frame 100 along the left and right directions is connected with a plurality of protruding structures 110 of exactly the same number, and the positions of the two are one-to-one. Each protruding structure 110 is used to support the elastic structure 220. Through the cooperation of multiple protruding structures 110 and multiple elastic structures 220, the load-bearing capacity of the shelf 200 is improved.

[0057] Reference Figures 1 to 3 In other embodiments, the shelf 200 includes multiple elastic structures 220, with multiple elastic structures 220 housed within the same guide groove 211, and the elastic structures 220 are spaced apart in a top-to-bottom direction. When the shelf 200 moves, the protruding structure 110 can cooperate with the elastic structures 220 at different positions within the guide groove 211. For example, as the shelf 200 moves upward, the protruding structure 110 can contact and provide support to the elastic structures 220 at different heights. This arrangement allows the shelf 200 to be supported at different heights, facilitating more precise adjustment of the shelf 200's height.

[0058] Reference Figures 5 to 7In some embodiments, the first guide wall 2221 is configured as a curved surface, with the curvature of the first guide wall 2221 gradually increasing from top to bottom. For example, the curved surface can be an arc surface, and from top to bottom, the surface of the first guide wall 2221 gradually transitions from an arc surface with a larger radius to an arc surface with a smaller radius. This is beneficial for increasing the initial contact area between the first guide wall 2221 and the protruding structure 110, thereby dispersing contact stress. When the two come into contact, the contact stress is dispersed, and the contact impact is reduced, thus making the sliding process between the elastic structure 220 and the protruding structure 110 smoother and more gradual, effectively improving the stability and durability of the overall structure.

[0059] Reference Figures 4 to 6 Taking the elastic structure 220 connected to the right side of the shelf body 210 as an example, refer to Figures 7 to 9 When the shelf 200 moves upward relative to the door frame 100, the upper part of the first guide wall 2221 first contacts the protruding structure 110. The curvature of the upper part of the first guide wall 2221 is small, which makes the contact between the elastic structure 220 and the protruding structure 110 more gradual. During the transition from the upper to the lower part, the contact area between the first guide wall 2221 and the protruding structure 110 gradually decreases, the contact stress gradually increases, and the contact between the first guide wall 2221 and the protruding structure 110 becomes more stable.

[0060] Reference Figures 4 to 6 In some embodiments, the shelf 200 includes a fixing part 230, which is located in the guide groove 211 and connected to the groove wall of the guide groove 211. The fixing part 230 and the groove wall enclose an installation cavity, and a part of the elastic structure 220 is located in the installation cavity. On the one hand, the fixing part 230 is used to ensure the positioning and installation of the elastic structure 220. On the other hand, since a part of the elastic structure 220 can produce elastic deformation, in order to ensure the compression and rebound of the elastic structure 220, it is usually necessary to slot on the side wall of the shelf body 210 for installation, which can easily lead to a thicker side wall of the shelf body 210. In this embodiment, by setting the fixing part 230, it is equivalent to locally thickening the side wall of the shelf body 210 to realize the installation of the elastic structure 220. Moreover, the fixing part 230 is located in the guide groove 211, which reduces the occupation of storage space and reduces the amount of material used in the production of the shelf body 210.

[0061] Reference Figures 4 to 6In some embodiments, the elastic structure 220 includes an elastic element 221 and a projectile 222. The elastic element 221 is installed in the mounting cavity, and a portion of the projectile 222 is located in the mounting cavity. One end of the elastic element 221 abuts against the shelf body 210, and the other end of the elastic element 221 abuts against the projectile 222. The projectile 222 is slidably connected to the fixing part 230 and is used to abut against the protruding structure 110. When the projectile 222 is pressed against the protruding structure 110 and moves toward the mounting cavity, the elastic element 221 is further compressed. When the projectile 222 separates from the protruding structure 110, the elastic element 221 rebounds and resets, driving the projectile 222 to move away from the mounting cavity. To prevent the projectile 222 from separating from the fixing part 230, the projectile 222 may be provided with a limiting structure. The cross-sectional area of ​​the limiting structure is larger than the cavity opening area of ​​the mounting cavity, and the limiting structure is located inside the mounting cavity to restrict the projectile 222 from leaving the mounting cavity.

[0062] Reference Figures 4 to 6 In other embodiments, the elastic element 221 is installed in the mounting cavity, and the shape and size of the mounting cavity are adapted to the shape and size of the elastic element 221 so that the elastic element 221 can be installed more accurately and stably in the mounting cavity. This helps to ensure that the elastic element 221 performs compression or elastic reset actions more smoothly and stably, and effectively avoids the elastic element 221 from tilting.

[0063] Reference Figures 4 to 6 In some embodiments, along the left-right direction, the elastic structure 220 is movably connected to the shelf 200. The elastic structure 220 is used to cooperate with the protruding structure 110 to support the shelf body 210 in the up-down direction. Along the front-back direction, the protruding structure 110 is used to abut against the groove wall of the guide groove 211. The cooperation between the protruding structure 110 and the groove wall of the guide groove 211 is used to limit the back-and-forth swaying of the shelf 200 and prevent it from disengaging from the door frame 100.

[0064] It should be noted that when the door assembly is opened and closed, the shelf 200 usually generates an inertial force in the front-to-back direction. The flexible structure 220 and the shelf 200 are movably connected to each other in the left and right directions, which can effectively reduce the frequency of slight compression and rebound of the flexible structure 220 and help extend the service life of the flexible structure 220.

[0065] Reference Figures 5 to 7 In some embodiments, the protrusion structure 110 includes a second guide wall 1111, which is located away from the sidewall connected to the protrusion structure 110 in a bottom-to-top direction. The second guide wall 1111 is used to abut against the elastic structure 220 to cause the elastic structure 220 to undergo compressive deformation.

[0066] Taking the protruding structure 110 connected to the right side wall of the door frame 100 as an example, the second guide wall 1111 can be an inclined plane extending from the upper left to the lower right, or a curved surface extending from the upper left to the lower right, or a combination of an inclined plane and a curved surface. The second guide wall 1111 is used to abut against the elastic structure 220, so that the relative sliding between the protruding structure 110 and the elastic structure 220 is smoother.

[0067] Reference Figures 5 to 7 In some embodiments, the second guide wall 1111 is configured as a curved surface, with the curvature of the second guide wall 1111 gradually increasing from bottom to top. For example, the curved surface can be an arc surface, with the second guide wall 1111 gradually transitioning from an arc surface with a larger radius to an arc surface with a smaller radius from bottom to top. This is beneficial for increasing the initial contact area between the second guide wall 1111 and the elastic structure 220, thereby dispersing contact stress. When the two come into contact, the contact stress is dispersed, and the contact impact is reduced, making the sliding process between the elastic structure 220 and the protruding structure 110 smoother and more gradual, effectively improving the stability and durability of the overall structure.

[0068] Reference Figure 5 Taking the protruding structure 110 connected to the inner side of the right side wall of the door frame 100 as an example, refer to Figures 7 to 9 When the shelf 200 moves upward relative to the door frame 100, the lower side of the second guide wall 1111 first contacts the elastic structure 220. The lower side of the second guide wall 1111 has a smaller curvature, making the contact between the elastic structure 220 and the protruding structure 110 smoother. During the transition from bottom to top, the contact area between the second guide wall 1111 and the elastic structure 220 gradually decreases, the contact stress increases, and the contact between the second guide wall 1111 and the elastic structure 220 becomes more stable.

[0069] Reference Figures 5 to 7 In some other embodiments, the elastic structure 220 is provided with a first guide wall 2221 and the protruding structure 110 is provided with a second guide wall 1111. When the elastic structure 220 and the protruding structure 110 abut against each other, the first guide wall 2221 and the second guide wall 1111 fit together, which helps to further improve the smoothness of their relative sliding.

[0070] Reference Figures 5 to 7 In some embodiments, the protrusion structure 110 includes a main body 111 and a rolling part 112. The rolling part 112 is rotatably connected to the main body 111 and protrudes outward from the outer surface of the protrusion structure 110. The rolling part 112 is used to abut against the elastic structure 220. The rolling part 112 can rotate relative to the main body 111 so that the sliding between the protrusion structure 110 and the elastic structure 220 is smoother.

[0071] Reference Figure 10 In other embodiments, the rolling part 112 is rotatably connected to the bullet head 222. The bullet head 222 is provided with a first guide wall 2221. The rolling part 112 is arranged on the first guide wall 2221 and protrudes outward relative to the first guide wall 2221. The rolling part 112 is used to abut against the protruding structure 110. Thus, when the shelf 200 moves upward relative to the door frame 100, the rolling part 112 abuts against the protruding structure 110 and rotates relative to the bullet head 222, and the relative sliding between the bullet head 222 and the protruding structure 110 is smoother.

[0072] Reference Figures 7 to 9 In some embodiments, the main body 111 includes a second guide wall 1111, which includes a central region. Along a top-to-bottom direction, the two ends of the central region opposite to the second guide wall 1111 are spaced apart. These two ends should be understood as the upper and lower ends. A rolling part 112 is rotatably connected within the central region, and the rolling part 112 protrudes outward from the surface of the central region. The rolling part 112 can be a ball, roller, or other structure capable of rotating relative to the projectile 222. Taking a roller as an example, the rolling part 112 is distributed in the central region of the second guide wall 1111, ensuring smooth sliding of the projectile 222 relative to the protruding structure 110 while reducing the space occupied by the rolling part 112.

[0073] Reference Figures 7 to 9 In other embodiments, the distance from the middle region to both ends of the second guide wall 1111 along the length direction of the second guide wall 1111 is equal. For example, this distance can be one-third of the total length of the second guide wall 1111, that is, the middle region is located at one-third to two-thirds of the total length of the second guide wall 1111. While ensuring that the projectile 222 slides relative to the protruding structure 110, it is beneficial to reduce the space occupied by the rolling part 112, so as to ensure a larger storage space.

[0074] It should be noted that the location of the central area can be adjusted adaptively according to needs.

[0075] Reference Figures 1 to 3 The refrigeration equipment of this utility model embodiment includes the door assembly in any of the above embodiments. The refrigeration equipment can be a refrigerator, freezer or other equipment. By installing the door assembly in the above embodiments, it is beneficial to adjust the layout of the storage space more flexibly, making storage more flexible and convenient, and also reducing the occupation of storage space and increasing the storage space.

[0076] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A door assembly, characterized in that, include: A door frame, wherein the door frame has two sidewalls along the left-right direction, and at least one of the sidewalls has a protruding structure connected to its inner side; A shelf is provided on the door frame and can move up and down along the door frame. The shelf includes a shelf body and an elastic structure. The shelf body has a guide groove that runs vertically through it on at least one side along the left and right direction. The guide groove is correspondingly provided with the protruding structure. The elastic structure is provided in the guide groove and connected to the shelf body. The elastic structure is configured as follows: When the shelf moves upward relative to the door frame, the elastic structure can be compressed and deformed by the pressure of the protruding structure, so that the elastic structure can pass over the protruding structure; When the elastic structure moves above the protruding structure, the elastic structure springs back to its original position and cooperates with the protruding structure to support the shelf.

2. The door assembly according to claim 1, characterized in that, The elastic structure is disposed on the groove wall of the guide groove. The elastic structure includes a first guide wall surface. In the reset state of the elastic structure, the first guide wall surface moves away from the groove wall in a top-to-bottom direction.

3. The door assembly according to claim 2, characterized in that, The first guide wall is configured as a curved surface, and the curvature of the first guide wall gradually increases along the direction from top to bottom.

4. The door assembly according to claim 1, characterized in that, The shelf includes a fixing part located in the guide groove and connected to the groove wall of the guide groove. The fixing part and the groove wall enclose a mounting cavity, and a portion of the elastic structure is located in the mounting cavity.

5. The door assembly according to claim 1, characterized in that, Along the left-right direction, the elastic structure is movably connected to the shelf body, and along the front-back direction, the protruding structure can abut against the groove wall of the guide groove.

6. The door assembly according to claim 1, characterized in that, The protruding structure includes a second guide wall surface that is located away from the side wall connected to the protruding structure in a bottom-to-top direction.

7. The door assembly according to claim 6, characterized in that, The second guide wall is configured as a curved surface, and the curvature of the second guide wall gradually increases along the direction from bottom to top.

8. The door assembly according to claim 1, characterized in that, The protruding structure includes a main body and a rolling part. The rolling part is rotatably connected to the main body and protrudes outward from the outer surface of the protruding structure. The rolling part is used to abut against the elastic structure.

9. The door assembly according to claim 8, characterized in that, The main body includes a second guide wall, which includes a central region. Along the top-to-bottom direction, the two ends opposite to the second guide wall in the central region are spaced apart. The rolling part is rotatably connected in the central region, and the rolling part protrudes outward from the surface of the central region.

10. A refrigeration device, characterized in that, include: The door assembly according to any one of claims 1 to 9.

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