Refrigeration appliance

Abstract

The application provides a refrigeration equipment, which comprises a cabinet shell, an inner container and a cabinet frame. The inner container is arranged in the cabinet shell, and the inner container and the cabinet shell form a heat preservation cavity with an opening in the upper part. The cabinet frame covers the opening of the heat preservation cavity, and the cabinet frame is provided with a connecting plate extending into the heat preservation cavity. At the opening of the heat preservation cavity, the shell wall of the cabinet shell is bent multiple times to form elastic clamping jaws, the elastic clamping jaws tend to be closed, and the elastic clamping jaws are opened under the action of external force to receive the connecting plate and clamp the connecting plate. The refrigeration equipment provided by the application forms elastic clamping jaws by bending the cabinet shell multiple times at the opening, and the elastic clamping jaws have a tendency to close inward. When the cabinet frame is covered, the connecting plate opens the elastic clamping jaws and is immediately clamped, and this plug-in locking action replaces the adhesive bonding in the traditional scheme, and simultaneously realizes reliable sealing.

Description

Technical Field

[0001] This application relates to the technical field of refrigeration equipment, and in particular to a refrigeration equipment having a housing. Background Technology

[0002] As a common refrigeration equipment, a freezer is usually made up of three main parts: a metal shell, a plastic inner liner, and a ring frame. These three parts enclose an open insulated cavity at the top, and a continuous insulation layer is then formed inside the cavity through foaming.

[0003] In the current production line process, workers first need to drop the inner liner into the shell, and then press the frame onto the edge of the inner liner to form a temporary component. The component is then transferred to the foaming station. During the process, equipment vibration, the weight of the frame, and inertia can easily cause the frame to move up and down, resulting in gaps at the intended sealing points.

[0004] To prevent displacement, factories commonly use tape to temporarily bond the box frame to the box shell, then manually remove it after the foam has expanded. While this method provides temporary fixation, it adds two extra steps: applying and removing the tape. Residual adhesive on the box shell surface can affect its appearance, and the tape itself cannot provide sustained mechanical locking, resulting in low sealing reliability. This becomes a bottleneck restricting production efficiency and quality control. Utility Model Content

[0005] This application provides a refrigeration device that can solve the technical problems of poor connection and sealing between the box frame and the box shell in existing refrigeration devices.

[0006] This application provides a refrigeration device, comprising: Box shell; The inner liner is set inside the outer shell, and the inner liner and the outer shell enclose an insulated cavity with an opening at the top; The box frame covers the opening of the insulation cavity, and the box frame is equipped with a connecting plate that extends into the insulation cavity. In this process, at the opening of the insulation cavity, the shell wall of the box is bent multiple times to form elastic claws. The elastic claws tend to close, and under the action of external thrust, the elastic claws open to receive the connecting plate and clamp the connecting plate.

[0007] The beneficial effects of the refrigeration equipment provided in this application are as follows: the elastic grippers formed by multiple bends at the opening of the casing have an inward tendency to converge. When the casing frame is closed, the connecting plate naturally expands the grippers and is immediately clamped. This plug-and-lock action replaces the tape bonding in traditional solutions. During the transfer phase, the casing frame no longer slides down vertically, and the opening of the insulation cavity always maintains its original size. No auxiliary positioning materials are required before foaming. The elastic grippers and connecting plate are in close contact throughout the process, forming a continuous mechanical lock seam. The foaming liquid is completely confined within the insulation cavity, eliminating flash and overflow, resulting in high sealing reliability. The elastic grippers and casing are made from a single sheet of material, which can be stamped without increasing the number of parts. During assembly, the two processes of applying and removing adhesive are eliminated, resulting in no adhesive residue and no waste of consumables on site, directly reducing material and labor costs. With the box structure in this application, while keeping the original foaming process unchanged, reliable sealing, firm fixation, simple appearance and green production can be achieved simultaneously by using the simple cooperation of elastic claws and connecting plates, which is significantly better than the traditional temporary adhesive tape solution.

[0008] In one possible design, the elastic gripper includes a first segment, a second segment, a third segment, a fourth segment, and a fifth segment connected in sequence. The first segment and the second segment form an obtuse angle, the second segment and the third segment form an acute angle, the third segment and the fourth segment form a right angle, and the fourth segment and the fifth segment form a right angle.

[0009] The above technical solution has the following advantages or beneficial effects: In this embodiment, the elastic gripper design is formed by five bending of the shell wall along the upper edge of the box, without any additional parts. It has stable and reliable clamping force, can resist the influence of foaming expansion force, and ensures the clamping strength of the elastic gripper on the connecting plate, thereby ensuring the connection strength and sealing effect between the box shell and the box frame.

[0010] In one possible design, a pad is provided on one side of the connecting plate. The pad has a first guide surface and a stop surface, and the first guide surface and the stop surface form an outwardly convex obtuse angle. When the connecting plate expands the elastic gripper, the first guide surface slides along the first section. When the connecting plate is clamped by the elastic gripper, the stop surface fits with the second section.

[0011] The above technical solution has the following advantages or beneficial effects: The pad is equipped with a connecting plate, the outward obtuse angle of which is formed by the intersection of the first guide surface and the stop surface. The trajectory of this obtuse angle corresponds mirror-to-mirror of the inward obtuse angle between the first and second sections of the elastic gripper. During the insertion phase, the first guide surface slides against the first section, dispersing the concentrated force that originally required simultaneously opening the two elastic arms into a progressive oblique thrust, causing a sharp drop in the insertion resistance of the connecting plate and the pad. When the pad crosses the dividing point between the first and second sections, the stop surface instantly fits against the plane of the second section, and the two elastic arms rebound, generating positive pressure and frictional self-locking between the stop surface and the second section, forming a reverse locking effect. Any upward external force must first overcome this frictional self-locking and the rebound force of the elastic arms before the connecting plate and the pad can be pulled out. This further improves the clamping effect of the elastic gripper on the connecting plate, thereby ensuring the connection strength and sealing effect between the housing and the frame.

[0012] In one possible design, a reinforcing rib is provided on the side of the connecting plate facing away from the pad block. The reinforcing rib has a second guide surface, which is inclined toward the root of the reinforcing rib in the direction in which the connecting plate is inserted into the elastic gripper.

[0013] The above technical solution has the following advantages or beneficial effects: the reinforcing rib is wedge-shaped and gradually thins along the insertion direction. When the connecting plate is pushed into the elastic clamp, the second guide surface first enters with a smaller thickness. As insertion continues, the maximum thickness of the second guide surface just fits into the elastic clamp, forming an interference fit. At this time, the clamping force of the elastic clamp will reach its maximum, firmly pressing the side of the connecting plate with the pad against the bottom of the elastic clamp, thereby further improving the clamping effect of the elastic clamp on the connecting plate, thus ensuring the connection strength and sealing effect between the shell and the frame.

[0014] In one possible design, the projections of the pads and reinforcing ribs onto the reference plane do not overlap, and the reference plane is parallel to the surface of the connecting plate.

[0015] The above technical solution has the following advantages or beneficial effects: the projections of the pad and the reinforcing rib on the reference plane do not overlap, forming a left-right (or front-back) staggered layout. This staggered layout distributes the force points of the elastic gripper to two different cross sections: the pad side bears the main insertion guidance and stop buckling, while the reinforcing rib side is responsible for wedging and spring support, avoiding the elastic gripper from simultaneously bearing the triple loads of guide sliding, stop impact, and wedging interference on the same cross section. Thus, the stress values ​​of each segment of the elastic gripper decrease, and the rebound amount of the elastic gripper remains constant after long-term vibration, without permanent deformation caused by stress concentration, thereby ensuring that the clamping force does not decrease.

[0016] In one possible design, there are multiple spacers, which are spaced apart along the length of the connecting plate.

[0017] The above technical solution has the following advantages or beneficial effects: Multiple pads are spaced apart along the length of the connecting plate, making the clamping force of the elastic gripper segmented and continuous. Multiple pads share the longitudinal pulling force, reducing the stress value at a single point and decreasing the risk of permanent deformation of the elastic gripper. The box frame experiences uniform force around its circumference, the sealing gap remains consistent, there is no localized leakage of foaming liquid, and the initial clamping force is maintained even after transportation vibrations.

[0018] In one possible design, there are multiple reinforcing ribs, which are spaced apart along the length of the connecting plate.

[0019] The above technical solution has the following advantages or beneficial effects: Multiple wedge-shaped reinforcing ribs are spaced apart along the length of the back of the connecting plate, forming a segmented wedge-tightening pattern. Each reinforcing rib independently expands the elastic gripper of its corresponding section, which can even out the clamping force and prevent permanent deformation of the elastic gripper due to local overload. A consistent sealing pressure is maintained around the circumference of the box frame, preventing localized leakage of the foaming liquid, and the initial clamping force is maintained even after transportation vibrations.

[0020] In one possible design, the side of the box frame facing the inner liner has a slot for inserting the upper edge of the inner liner.

[0021] The above technical solution has the following advantages or beneficial effects: the slot can be integrally formed on the lower side of the box frame, and the upper edge of the inner liner can be directly inserted into the slot during assembly, achieving bidirectional pre-positioning in both radial and axial directions. The slot blocks the channel for the foaming material to climb upward along the inner liner wall, preventing overflow and flash.

[0022] In one possible design, the distance between the slot wall near the inside of the insulation cavity and the inner liner is ≤2.5mm.

[0023] The above technical solution has the following advantages or beneficial effects: the distance d between the groove wall and the inner liner on the side of the slot near the inside of the insulation cavity is ≤2.5mm, which makes the section form a narrow slit damping: the foaming material can still flow in under high pressure, but it will quickly lose speed, cool and solidify due to the sudden narrowing of the channel, thereby forming a dense sealing plug in the slot, completely blocking the path of the foam liquid to continue to overflow, and achieving a clean seal without tape or sponge.

[0024] In one possible design, the frame does not extend beyond the outer edge of the shell at the opening of the insulation cavity.

[0025] The above technical solution has the following advantages or beneficial effects: the outer edge of the frame is flush with or slightly recessed from the outer side of the shell, forming a hidden frame. The exposed edge of the frame is not visible from the user's perspective, and the whole machine presents a complete and clean shell surface, thereby improving the user experience. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the freezer provided in an embodiment of this application; Figure 2 yes Figure 1 A schematic diagram of the outer shell, inner liner, and frame of the container; Figure 3 yes Figure 2 An exploded view of the box shell and box frame; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 yes Figure 3 A schematic diagram of the middle box frame from another perspective; Figure 6 These are cross-sectional views of the box shell, inner liner, and box frame provided in the embodiments of this application; Figure 7 This is an exploded view of an example of the elastic gripper and connecting plate provided in this application. Figure 8 yes Figure 7 A schematic diagram of the elastic grippers holding the connecting plate. Figure 9 yes Figure 5 Enlarged view of point C in the middle; Figure 10 This is an exploded view of another example of the elastic gripper and connecting plate provided in this application. Figure 11 yes Figure 10 A schematic diagram of the elastic grippers holding the connecting plate. Figure 12 yes Figure 5 Enlarged view of point B in the middle; Figure 13 This is an exploded view of another example of the elastic gripper and connecting plate provided in this application. Figure 14 yes Figure 13 A schematic diagram of the elastic grippers holding the connecting plate. Figure 15 This is a schematic diagram of the box frame as observed by the user in this embodiment.

[0028] Figure label: 10. Shell; 11. Flexible gripper; 111. First section; 112. Second section; 113. Third section; 114. Fourth section; 115. Fifth section; 20. Inner liner; 21. Insulation cavity; 30. Box frame; 31. Connecting plate; 311. Pad block; 312. First guide surface; 313. Stop surface; 314. Reinforcing rib; 315. Second guide surface; 32. Slot; 40. Door body. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this application, it should be understood that the terms "inner," "outer," "upper," "bottom," "front," and "rear," etc., indicate the orientation or positional relationship (if any) based on the appendix. Figure 1The orientations or positional relationships shown are for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0034] As a common refrigeration equipment, a freezer is usually made up of three main parts: a metal shell, a plastic inner liner, and a ring frame. The metal shell and the plastic inner liner enclose an open insulated cavity at the top, and the ring frame is sealed at the opening of the insulated cavity. Subsequently, a continuous insulation layer is formed inside the cavity by foaming.

[0035] In the current production line process, workers first need to put the inner liner into the box shell, and then press the box frame onto the edge of the box shell and the inner liner to form a temporary assembly. The assembly is then transferred to the foaming station. During the process, the vibration of the equipment, the weight of the box frame and its inertia can easily cause the box frame to move up and down, resulting in gaps at the intended sealing points.

[0036] To prevent displacement, factories commonly use tape to temporarily bond the box frame to the box shell, then manually remove it after the foam has expanded. While this method provides temporary fixation, it adds two extra steps: applying and removing the tape. Residual adhesive on the box shell surface can affect its appearance, and the tape itself cannot provide sustained mechanical locking, resulting in low sealing reliability. This becomes a bottleneck restricting production efficiency and quality control.

[0037] In view of this, in order to solve the above-mentioned technical problems, this application provides a refrigeration device that forms elastic grippers by repeatedly bending at the opening of the casing. The elastic grippers themselves have a tendency to retract inward. When the casing is closed, the connecting plate opens the elastic grippers and is immediately clamped. This plug-and-lock action replaces the tape bonding in the traditional solution, and simultaneously achieves a reliable seal.

[0038] To more conveniently illustrate the refrigeration equipment provided in the embodiments of this application, and as an example rather than a limitation, the technical solution of this application will be described in detail below using a freezer as an example. Optionally, the refrigeration equipment in this application can also be a refrigerator.

[0039] Figure 1 This is a schematic diagram of a freezer provided in an embodiment of this application. Furthermore, for the convenience of the description of the embodiments below, an XYZ coordinate system is established for the freezer. Specifically, the length direction of the freezer is defined as the Y direction, the width direction as the X direction, and the height direction as the Z direction. The X, Y, and Z directions are perpendicular to each other.

[0040] like Figure 1 As shown, this application embodiment first provides a freezer, which includes a shell 10, an inner liner 20, a frame 30, and a door 40.

[0041] The shell 10 can be a thin-walled rectangular cavity structure, with a narrow side extending outward from the opening, which is bent multiple times. This bent side forms the elastic gripper 11, which is in a clamping jaw shape when in its natural state. The shell 10 and the elastic gripper 11 can be integrally formed, and the material can be, but is not limited to, galvanized steel sheet or cold-rolled steel sheet, with the shell wall thickness limited to ensure bending resilience. The shell 10 provides a rigid exoskeleton for the entire device and also serves as the base for the elastic gripper 11. The shell 10 and the inner liner 20 together enclose the insulation cavity 21 and directly bear the expansion force during foaming.

[0042] The inner liner 20 can also be a thin-walled rectangular cavity structure, with an outer dimension slightly smaller than the outer shell 10, maintaining a uniform cavity between them. The material of the inner liner 20 includes, but is not limited to, acrylonitrile-butadiene-styrene copolymer (ABS) or high-impact polystyrene (HIPS), and is integrally formed by vacuum forming or injection molding. The function of the inner liner 20 is to form a spatial interface for storing items, preventing direct contact between the stored items and the metal outer shell 10. The opening edge of the inner liner 20 can be inserted and fitted into the slot 32 provided on the lower surface of the frame 30 to block the path of the foam liquid overflowing during foaming. The inner liner 20 and the outer shell 10 together form the upper-opening insulation cavity 21 and provide the inner boundary for the subsequent foaming layer.

[0043] The frame 30 can be a closed annular frame structure, with a connecting plate 31 extending from the lower surface of the frame 30. The thickness of the connecting plate 31 matches the opening of the elastic gripper 11, allowing it to be inserted and held tightly. The frame 30 and the connecting plate 31 can also be integrally molded, and the material can be plastic or metal, or a composite material of plastic and metal. The frame 30 must ensure sufficient rigidity and be resistant to warping. The frame 30 serves as the cover of the insulation cavity 21, positioning the relative position of the inner liner 20 and the outer shell 10 before foaming, and after foaming, it also serves as the bearing base for the sealing gasket of the door 40.

[0044] One side of the door 40 is connected to the cabinet 10 by two galvanized steel hinges on the left and right sides, which are used to open and close the storage space of the freezer.

[0045] Figure 2 yes Figure 1 A schematic diagram of the outer shell 10, inner liner 20, and frame 30. Figure 3 yes Figure 2 An exploded view of the shell 10 and frame 30. Figure 4 yes Figure 3 Enlarged view of point A in the middle. Figure 5 yes Figure 3A schematic diagram of the middle box frame 30 from another perspective. Figure 6 This is a cross-sectional view of the shell 10, inner liner 20, and frame 30 provided in the embodiments of this application.

[0046] like Figures 2-4 As shown, at the opening of the insulation cavity 21, the shell wall of the casing 10 is bent multiple times to form elastic grippers 11, which tend to close together. Figures 5-6 As shown, the box frame 30 is provided with a connecting plate 31 extending into the insulation cavity 21. When the box frame 30 is closed over the opening of the insulation cavity 21, the elastic gripper 11 is opened by external thrust to receive the connecting plate 31 and clamp the connecting plate 31.

[0047] The refrigerator provided in this embodiment forms elastic grippers 11 by repeatedly bending the opening of the shell 10. These elastic grippers 11 have a tendency to retract inwards. When the frame 30 closes, the connecting plate 31 automatically opens the elastic grippers 11 and immediately clamps them. This plug-and-lock action replaces the traditional tape bonding. During transport, the frame 30 no longer slides vertically, and the opening of the insulation cavity 21 maintains its original size. No auxiliary positioning materials are needed before foaming. The elastic grippers 11 and the connecting plate 31 are in close contact throughout, forming a continuous mechanical lock. The foaming liquid is completely confined within the insulation cavity 21, eliminating flash and overflow, resulting in high sealing reliability. The elastic grippers 11 and the shell 10 are made from a single sheet of material, which can be stamped without increasing the number of parts. Assembly eliminates the need for applying and removing adhesive, resulting in no adhesive residue or material waste on-site, directly reducing material and labor costs. With the box structure in this embodiment, while keeping the original foaming process unchanged, the simple cooperation between the elastic clamps 11 and the connecting plate 31 simultaneously achieves reliable sealing, firm fixation, simple appearance and green production, which is significantly better than the traditional temporary adhesive tape bonding solution.

[0048] Figure 7 This is an exploded view of an example of the elastic gripper 11 and connecting plate 31 provided in this application. Figure 8 yes Figure 7 A schematic diagram of the elastic gripper 11 holding the connecting plate 31.

[0049] like Figures 7-8 As shown, in some embodiments, the elastic gripper 11 includes a first segment 111, a second segment 112, a third segment 113, a fourth segment 114, and a fifth segment 115 connected in sequence. The first segment 111 and the second segment 112 form an obtuse angle, the second segment 112 and the third segment 113 form an acute angle, the third segment 113 and the fourth segment 114 form a right angle, and the fourth segment 114 and the fifth segment 115 form a right angle.

[0050] The clamping force of the elastic gripper 11 does not rely on the entire contour, but rather originates from two elastic arms formed by continuous bends from "concave obtuse angle to acute angle". The concave obtuse angle between the first segment 111 and the second segment 112 constitutes one elastic arm, and the acute angle between the second segment 112 and the third segment 113 constitutes the other elastic arm. When the connecting plate 31 is inserted, the edge of the connecting plate 31 first touches the inclined surface of the first segment 111, forcing both segments to open outwards simultaneously, and the elastic potential energy is stored at the two bends. The connecting plate 31 continues to be inserted deeper into the elastic gripper 11. After the box frame 30 rests against the edge of the box shell 10, the two elastic arms quickly retract inwards, and finally the concave obtuse angle formed by the first segment 111 and the second segment 112 clamps the connecting plate 31, forming a self-locking mechanism. After the third segment 113, the double right-angle steps only serve as a rigid backing to prevent the foam expansion force from pushing the first two elastic arms away in the opposite direction, ensuring a constant clamping gap.

[0051] In summary, the design of the elastic gripper 11 in this embodiment is such that the entire clamping and limiting function is integrally formed by five bending of the shell wall along the upper edge of the housing 10 without any additional parts. It has stable and reliable clamping force, can resist the influence of foaming expansion force, and ensures the clamping strength of the elastic gripper 11 on the connecting plate 31, thereby ensuring the connection strength and sealing effect between the housing 10 and the frame 30.

[0052] Figure 9 yes Figure 5 A magnified view of point C in the middle. Figure 10 This is an exploded view of another example of the elastic gripper 11 and connecting plate 31 provided in this application. Figure 11 yes Figure 10 A schematic diagram of the elastic gripper 11 holding the connecting plate 31.

[0053] like Figures 9-11 As shown, in some embodiments, a pad 311 is provided on one side of the connecting plate 31. The pad 311 has a first guide surface 312 and a stop surface 313, which form an outwardly convex obtuse angle. When the connecting plate 31 is opened by the elastic gripper 11, the first guide surface 312 slides along the first segment 111. When the connecting plate 31 is clamped by the elastic gripper 11, the stop surface 313 fits against the second segment 112.

[0054] The pad 311 is provided with a connecting plate 31, the outward obtuse angle of which is formed by the intersection of the first guide surface 312 and the stop surface 313. The trajectory of this obtuse angle corresponds to the concave obtuse angle of the first segment 111 to the second segment 112 of the elastic gripper 11. During the insertion phase, the first guide surface 312 slides against the first segment 111, dispersing the concentrated force that originally needed to simultaneously open the two elastic arms into a progressive oblique thrust, causing the insertion resistance of the connecting plate 31 and the pad 311 to drop sharply. When the pad 311 crosses the dividing point between the first segment 111 and the second segment 112, the stop surface 313 instantly fits against the plane of the second segment 112, and the two elastic arms rebound, generating positive pressure and frictional self-locking between the stop surface 313 and the second segment 112, forming a reverse locking effect. Any upward external force must first overcome this frictional self-locking and the rebound force of the elastic arms before the connecting plate 31 and the pad 311 can be pulled out. This further improves the clamping effect of the elastic gripper 11 on the connecting plate 31, thereby ensuring the connection strength and sealing effect between the housing 10 and the frame 30.

[0055] Figure 12 yes Figure 5 Enlarged view of point B in the middle. Figure 13 This is an exploded view of another example of the elastic gripper 11 and connecting plate 31 provided in this application. Figure 14 yes Figure 13 A schematic diagram of the elastic gripper 11 holding the connecting plate 31.

[0056] like Figures 12-14 As shown, in some embodiments, a reinforcing rib 314 is provided on the side of the connecting plate 31 facing away from the pad block 311. The reinforcing rib 314 has a second guide surface 315. In the direction in which the connecting plate 31 is inserted into the elastic gripper 11, the second guide surface 315 is inclined toward the root of the reinforcing rib 314.

[0057] The direction in which the connecting plate 31 is inserted into the elastic gripper 11 is... Figure 13 In the direction of a.

[0058] In fact, the reinforcing rib 314 is wedge-shaped and gradually thins along the insertion direction. When the connecting plate 31 is pushed into the elastic clamp 11, the second guide surface 315 first enters with a smaller thickness. As insertion continues, the maximum thickness of the second guide surface 315 just fits into the elastic clamp 11, forming an interference fit. At this time, the clamping force of the elastic clamp 11 will reach its maximum, firmly pressing the side of the connecting plate 31 with the pad 311 against the bottom of the elastic clamp 11, thereby further improving the clamping effect of the elastic clamp 11 on the connecting plate 31, thus ensuring the connection strength and sealing effect between the housing 10 and the frame 30.

[0059] In some embodiments, the projections of the pad 311 and the reinforcing rib 314 on the reference plane do not overlap, and the reference plane is parallel to the surface of the connecting plate 31.

[0060] The projections of the pad 311 and the reinforcing rib 314 on the reference plane do not overlap, forming a staggered layout from left to right (or front to back). This staggered layout distributes the force on the elastic gripper 11 to two different cross sections: the pad 311 side bears the main insertion guidance and stop buckling, while the reinforcing rib 314 side is responsible for wedging and spring support, preventing the elastic gripper 11 from simultaneously bearing the triple loads of guide sliding, stop impact, and wedging interference on the same cross section. In this way, the stress value of each section of the elastic gripper 11 decreases, and the rebound amount of the elastic gripper 11 remains constant after long-term vibration, without permanent deformation caused by stress concentration, thus ensuring that the clamping force does not decrease.

[0061] like Figure 9 As shown, in some embodiments, there are multiple pads 311, and the multiple pads 311 are spaced apart along the length direction of the connecting plate 31.

[0062] Multiple pads 311 are spaced apart along the length of the connecting plate 31, so that the clamping force of the elastic claw 11 is segmented and continuous. The multiple pads 311 share the longitudinal pulling force, reducing the stress value at a single point and reducing the risk of permanent deformation of the elastic claw 11. The box frame 30 is subjected to uniform force around its circumference, the sealing gap remains consistent, there is no local overflow of foaming liquid, and the initial clamping force is maintained after transportation vibration.

[0063] like Figure 12 As shown, in some embodiments, there are multiple reinforcing ribs 314, which are spaced apart along the length of the connecting plate 31.

[0064] Multiple wedge-shaped reinforcing ribs 314 are spaced along the length of the back of the connecting plate 31, forming a segmented wedge-tightening pattern. Each reinforcing rib 314 independently supports the elastic claws 11 in the corresponding section, which can even out the clamping force and prevent the elastic claws 11 from undergoing permanent deformation due to local overload. The box frame 30 maintains a consistent sealing pressure around its circumference, and there is no local leakage of foaming liquid. It also maintains the initial clamping force after transportation vibration.

[0065] like Figure 6 As shown, in some embodiments, the side of the box frame 30 facing the inner liner 20 is provided with a slot 32 for inserting the upper edge of the inner liner 20.

[0066] The slot 32 can be integrally formed on the lower side of the frame 30. During assembly, the upper edge of the inner liner 20 is directly inserted into the slot, achieving bidirectional pre-positioning in both the radial and axial directions. The slot 32 blocks the channel for the foaming material to climb upwards along the wall of the inner liner 20, preventing overflow and flash.

[0067] like Figure 6 As shown, in some embodiments, the distance d between the slot wall of the slot 32 on the side closest to the inside of the insulation cavity 21 and the inner liner 20 is ≤2.5mm.

[0068] The distance d between the groove wall near the inside of the insulation cavity 21 and the inner liner 20 in the slot 32 is ≤2.5mm, which makes this section form a narrow slit damping: the foaming material can still flow in under high pressure, but it will quickly lose speed, cool and solidify due to the sudden narrowing of the channel, thus forming a dense sealing plug in the slot 32, completely blocking the path of the foam liquid to continue to overflow, and achieving a clean seal without tape or sponge.

[0069] In the prior art, the spacing d at this point is usually greater than 4mm, the damping effect of the narrow slit is weak, and the sealing performance is not as good as that of this embodiment.

[0070] Figure 15 This is a schematic diagram of the box frame 30 as observed by the user in this embodiment.

[0071] like Figure 15 As shown, in some embodiments, the box frame 30 does not extend beyond the outer edge of the box shell 10 at the opening of the insulation cavity 21.

[0072] The outer edge of the frame 30 is flush with or slightly recessed from the outer side of the shell 10, forming a concealed frame 30. Figure 15 As shown, the exposed flange of the frame 30 is not visible from the user's perspective, and the whole machine presents a complete and clean shell 10, which can improve the user's experience.

[0073] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A refrigeration device, characterized in that, include: Box shell (10); The inner liner (20) is disposed in the shell (10), and the inner liner (20) and the shell (10) enclose to form a heat-insulating cavity (21) with an opening at the top. A box frame (30) covers the opening of the insulation cavity (21), and the box frame (30) is provided with a connecting plate (31) extending into the insulation cavity (21). At the opening of the insulation cavity (21), the shell wall of the box shell (10) is bent multiple times to form an elastic claw (11). The elastic claw (11) tends to close. Under the action of external thrust, the elastic claw (11) opens to receive the connecting plate (31) and clamps the connecting plate (31).

2. The refrigeration equipment according to claim 1, characterized in that, The elastic gripper (11) includes a first segment (111), a second segment (112), a third segment (113), a fourth segment (114), and a fifth segment (115) connected in sequence. The first segment (111) and the second segment (112) form an obtuse angle with an inward curve. The second segment (112) and the third segment (113) form an acute angle. The third segment (113) and the fourth segment (114) form a right angle. The fourth segment (114) and the fifth segment (115) form a right angle.

3. The refrigeration equipment according to claim 2, characterized in that, A pad (311) is provided on one side of the connecting plate (31). The pad (311) has a first guide surface (312) and a stop surface (313). The first guide surface (312) and the stop surface (313) form an outwardly convex obtuse angle. When the connecting plate (31) opens the elastic gripper (11), the first guide surface (312) slides along the first segment (111). When the connecting plate (31) is clamped by the elastic gripper (11), the stop surface (313) fits against the second segment (112).

4. The refrigeration equipment according to claim 3, characterized in that, A reinforcing rib (314) is provided on the side of the connecting plate (31) opposite to the pad (311). The reinforcing rib (314) has a second guide surface (315). In the direction in which the connecting plate (31) is inserted into the elastic claw (11), the second guide surface (315) is inclined toward the root of the reinforcing rib (314).

5. The refrigeration equipment according to claim 4, characterized in that, The projections of the pad (311) and the reinforcing rib (314) on the reference plane do not overlap, and the reference plane is parallel to the surface of the connecting plate (31).

6. The refrigeration equipment according to claim 3, characterized in that, The number of pads (311) is multiple, and the multiple pads (311) are spaced apart along the length direction of the connecting plate (31).

7. The refrigeration equipment according to claim 4, characterized in that, The number of the reinforcing ribs (314) is multiple, and the multiple reinforcing ribs (314) are spaced apart along the length direction of the connecting plate (31).

8. The refrigeration equipment according to any one of claims 1-7, characterized in that, The box frame (30) has a slot (32) on the side facing the inner liner (20) for inserting the upper edge of the inner liner (20).

9. The refrigeration equipment according to claim 8, characterized in that, The distance between the slot wall of the slot (32) on the side closest to the interior of the insulation cavity (21) and the inner liner (20) is ≤2.5mm.

10. The refrigeration equipment according to any one of claims 1-7, characterized in that, At the opening of the insulation cavity (21), the box frame (30) does not extend beyond the outer edge of the box shell (10).

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