Anti-sagging sealed mouth frame structure for island cabinet
By installing reinforcing corner brackets and screws at the four corners of the island cabinet frame, a stable frame is formed in combination with support beams and support columns. The problem of frame sagging is solved by using sealing grooves and sealing strips, thereby improving structural strength and sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG GANGTONG ELECTRICAL APPLIANCES CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-06-05
AI Technical Summary
Existing island cabinets with anti-sagging sealed frame structures are prone to sagging during long-term use, leading to decreased sealing performance, cold air leakage, increased energy consumption, and affecting the normal opening and closing of the door and its service life.
By setting reinforcing corner pieces and screws at the four corners of the frame body, a stable frame is formed by combining the upper support beam, lower support beam and support column. The inner side is set with a sealing groove and sealing strip to distribute the weight and mechanical stress of the door body, prevent sagging, and achieve a tight seal.
The structural strength of the frame has been enhanced to prevent sagging, reduce cold air leakage, and improve insulation performance and service life.
Smart Images

Figure CN224320464U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of island cabinet mechanical structure technology, specifically to an anti-sagging sealed frame structure for island cabinets. Background Technology
[0002] Island display cases are a type of refrigerated display equipment commonly used in commercial retail settings. They are named for their typically independent placement in the center of the store. They are mainly used to display and store food, beverages, dairy products, and other items that require refrigeration and preservation. They feature excellent display effects, large storage space, and precise temperature control, making them a common piece of equipment in supermarkets, convenience stores, shopping malls, and other similar locations. The frame structure plays a crucial role in the sealing performance and overall stability of the cabinet.
[0003] However, the existing island cabinets with their anti-sagging sealed frame structure still have some problems:
[0004] An existing cabinet frame structure, such as one described in application number CN201520655861.3, includes sheet metal parts, a cabinet door strip, and an inner liner. The sheet metal parts have a first Z-shaped flange; the inner liner also has a second Z-shaped flange. The cabinet door strip is L-shaped, including a vertical part. An L-shaped piece is attached to the inner side of the upper end of the vertical part, forming a sheet metal part slot with the L-shaped piece. A process opening is provided in the lower end of the vertical part, and the lower end of the vertical part is connected to the head end of a horizontal part. A process opening is provided in the horizontal part, and an L-shaped connecting surface is provided on the tail end and upper surface of the horizontal part. The first Z-shaped flange on the sheet metal parts is spliced into the sheet metal part slot, and the second Z-shaped flange on the inner liner is inserted into the L-shaped connecting surface of the horizontal part of the cabinet door strip. The sheet metal parts, the inner liner, and the cabinet door strip form a hollow structure, which is bonded together after being foamed and cured with a foaming material.
[0005] The existing island cabinet frame structure is prone to sagging during long-term use due to frequent door opening and closing and its own weight. This not only leads to a decrease in the cabinet's sealing performance, causing cold air leakage and increasing energy consumption, but also affects the normal opening and closing of the door, reducing the lifespan of the island cabinet and the user experience.
[0006] Therefore, we propose a sealed frame structure for island cabinets to prevent sagging, in order to solve the problems mentioned above. Utility Model Content
[0007] The purpose of this utility model is to provide a sealing frame structure for island cabinets that prevents sagging, in order to solve the problem mentioned in the background art that the frame structure of island cabinets is prone to sagging during long-term use due to factors such as frequent opening and closing of the door and its own weight. This not only leads to a decrease in the sealing performance of the cabinet, causing cold air leakage and increasing energy consumption, but also affects the normal opening and closing of the door, reducing the service life of the island cabinet and the user experience.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a sealing frame structure for an island cabinet to prevent sagging, comprising a frame body and a first screw hole:
[0009] The four corners of the frame body are provided with a number of first screw holes, and the four corners of the frame body are provided with reinforcing corner members. The outer surface of the reinforcing corner members is provided with a number of second screw holes, and screws pass through the middle of the first screw holes and the second screw holes. An upper support beam and a lower support beam are welded to one side of the reinforcing corner members. A number of support columns are welded between the upper support beam and the lower support beam. The outer side wall of the frame body is provided with a mounting flange. The outer surface of the mounting flange is provided with a mounting hole. The inner side wall of the frame body is provided with a sealing groove. A sealing strip is installed inside the sealing groove.
[0010] By adopting the above technical solution, the door frame is connected by reinforcing corner pieces and screws at the four corners of the frame body, and combined with the upper support beam, lower support beam and support column to form a stable frame, which distributes the weight and mechanical stress of the door body and prevents the frame from sagging. At the same time, the inner sealing groove and sealing strip cooperate to achieve a tight seal by using elastic deformation, reducing cold air leakage and improving the insulation performance and service life of the island cabinet.
[0011] Preferably, the reinforcing corner piece has an L-shaped structure, and the inner side of the reinforcing corner piece is closely fitted to the outer side of the frame body, and the reinforcing corner piece is fixedly connected to the frame body by screws.
[0012] By adopting the above technical solution, the corner brackets are L-shaped. By tightly fitting the inner side to the outer side of the frame body and fixing them with screws through the screw holes of both, a rigid support structure is formed at the four corners of the frame body, which enhances the overall structural strength of the frame, effectively suppresses corner deformation and sagging, and improves the reliability of mechanical connections.
[0013] Preferably, the upper support beam and the lower support beam are designed to be parallel to each other, and the upper support beam and the lower support beam are arranged along the length direction of the frame body, and two sets of upper support beams and lower support beams are arranged symmetrically along the frame body.
[0014] The above technical solution involves two sets of upper and lower support beams arranged symmetrically and parallel to each other along the length of the frame body. The support column is welded between the two beams, which can enhance the support rigidity of the frame in the longitudinal direction, effectively resist sagging deformation, and provide a symmetrical and stable load-bearing structure for the installation of peripheral equipment.
[0015] Preferably, the support column is a hollow cylindrical structure, and the inside of the support column is welded with reinforcing ribs, which are in a cross shape.
[0016] By adopting the above technical solution, the support column adopts a hollow cylindrical structure with built-in cross-shaped reinforcing ribs, which can improve the bending and torsional strength of the support column, ensure the stable connection of the upper and lower support beams, and enhance the overall anti-sagging ability of the frame.
[0017] Preferably, multiple sets of mounting holes are evenly formed along the outer surface of the mounting flange, and a metal bushing is fitted inside each mounting hole.
[0018] Using the above technical solution, multiple mounting holes are provided on the mounting flange, and metal bushings are provided in the mounting holes. The frame body is fixedly installed on the island cabinet body by bolts passing through the mounting holes and metal bushings. The metal bushings can enhance the wear resistance and deformation resistance of the mounting holes and ensure a stable mechanical connection between the frame body and the cabinet body.
[0019] Preferably, the sealing strip has a trapezoidal cross-section, and the shape of the sealing groove is adapted to the sealing strip.
[0020] Using the above technical solution, the shape of the sealing groove is adapted to the sealing strip, and the outer wall of the sealing strip is tightly fitted to the inner wall of the island cabinet door. Its cross-section is trapezoidal, with the upper base of the trapezoid close to the inner wall of the frame body and the lower base close to the inner wall of the island cabinet door. When the door is closed, the squeezing force generated by the door on the sealing strip will cause the sealing strip to undergo elastic deformation to fill the gap, effectively blocking the airflow inside and outside and improving the sealing performance.
[0021] Compared with the prior art, the beneficial effects of this utility model are:
[0022] 1. The L-shaped reinforcing corner pieces at the four corners of the frame body are fixed to the body with screws to form rigid corner supports, which enhances the overall structural strength and suppresses corner deformation and sagging. The upper and lower support beams, which are symmetrically arranged, are connected by hollow cylindrical support columns with cross-shaped reinforcing ribs inside, forming an "I"-shaped anti-deformation frame, which effectively disperses the weight of the door and mechanical stress, and further prevents the frame from sagging.
[0023] 2. The trapezoidal sealing strip in the inner wall sealing groove fits against the door body. After being squeezed, it elastically deforms to fill the gap, blocking the airflow inside and outside and improving the sealing performance. The mounting hole with metal bushing on the mounting flange is connected and fixed to the cabinet body by bolts, which can enhance wear resistance and deformation resistance. The metal bushing ensures the wear resistance and deformation resistance of the mounting hole, ensuring that the frame body 1 is firmly connected to the cabinet body. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the external structure of this utility model from the front view;
[0025] Figure 2 This is a schematic diagram of the connection structure between the reinforcing corner piece and the frame body of this utility model;
[0026] Figure 3 This is a schematic diagram of the connection structure between the reinforcing corner piece and the supporting beam of this utility model;
[0027] Figure 4 This is a schematic diagram of the internal structure of the support column of this utility model;
[0028] Figure 5 This is a schematic diagram of the mounting flange surface structure of this utility model;
[0029] Figure 6 This is a schematic diagram of the sealing structure of this utility model.
[0030] In the figure: 1. Frame body; 2. First screw hole; 3. Reinforcing corner piece; 4. Second screw hole; 5. Screw; 6. Upper support beam; 7. Lower support beam; 8. Support column; 9. Reinforcing rib; 10. Mounting flange; 11. Mounting hole; 12. Metal bushing; 13. Sealing groove; 14. Sealing strip. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0032] Please see Figures 1-6This utility model provides a technical solution: a sealing frame structure for an island cabinet to prevent sagging, comprising a frame body 1 and first screw holes 2; several first screw holes 2 are provided at the four corners of the frame body 1, and reinforcing corner pieces 3 are provided at the four corners of the frame body 1; several second screw holes 4 are provided on the outer surface of the reinforcing corner pieces 3; screws 5 pass through the middle of the first screw holes 2 and the second screw holes 4; an upper support beam 6 and a lower support beam 7 are welded to one side of the reinforcing corner pieces 3; several support columns 8 are welded between the upper support beam 6 and the lower support beam 7; a mounting flange 10 is provided on the outer wall of the frame body 1, and mounting holes 11 are provided on the outer surface of the mounting flange 10; a sealing groove 13 is provided on the inner wall of the frame body 1, and a sealing strip 14 is installed inside the sealing groove 13. The reinforcing corner pieces 3 have an L-shaped structure, and the inner side of the reinforcing corner pieces 3 is tightly fitted to the outer side of the frame body 1, and the reinforcing corner pieces 3 are fixedly connected to the frame body 1 by screws 5. The upper support beam 6 and the lower support beam 7 are designed to be parallel to each other, and are arranged along the length of the frame body 1. Two sets of upper and lower support beams 6 and 7 are symmetrically arranged vertically along the frame body 1. The support column 8 is a hollow cylindrical structure, with reinforcing ribs 9 welded inside, and the reinforcing ribs 9 have a cross-shaped structure. Multiple sets of mounting holes 11 are evenly distributed along the outer surface of the mounting flange 10, and metal bushings 12 are fitted into the interior of each mounting hole 11. The sealing strip 14 has a trapezoidal cross-section, and the shape of the sealing groove 13 is adapted to the sealing strip 14.
[0033] The L-shaped reinforcing corner pieces 3 at the four corners of the frame body 1 are tightly fitted to the body by screws 5 through the first screw hole 2 and the second screw hole 4, forming rigid corner supports, enhancing the overall structural strength of the frame, effectively suppressing corner deformation and sagging, and improving the reliability of mechanical connections. Two sets of upper support beams 6 and lower support beams 7, arranged parallel and symmetrically along the length of the body, are connected by hollow cylindrical support columns 8 with internally welded cross-shaped reinforcing ribs 9, forming an "I"-shaped anti-deformation frame, distributing the weight and mechanical stress of the door body, and preventing the frame from sagging. The mounting flange 10 has evenly distributed metal bushings 12 and mounting holes 11, and bolts pass through the mounting holes 11 and the metal bushings 12. The bushing 12 fixes the frame body 1 to the island cabinet body. The metal bushing 12 can enhance the wear resistance and deformation resistance of the mounting hole 11, and ensure a stable mechanical connection between the frame body 1 and the cabinet body. The trapezoidal cross-section sealing strip 14 and the matching sealing groove 13 are closely fitted with the inner wall of the island cabinet door. Its cross-section is trapezoidal, and the upper base of the trapezoid is close to the inner wall of the frame body 1, and the lower base is close to the inner wall of the island cabinet door. When the door is closed, the squeezing force generated by the door on the sealing strip 14 will cause the sealing strip 14 to undergo elastic deformation to fill the gap, effectively blocking the airflow inside and outside and improving the sealing performance.
[0034] Working Principle: For this type of island cabinet, an anti-sagging sealed frame structure is used. During operation, the L-shaped reinforcing corner pieces 3 at the four corners of the frame body 1 are fastened by screws 5 through the first screw hole 2 and the second screw hole 4, forming rigid corner support points. This disperses external forces to the corners. Two sets of upper support beams 6 and lower support beams 7, arranged parallel and symmetrically along the length of the frame body 1, form an "I"-shaped mechanical frame with the help of hollow cylindrical support columns 8 with internally welded cross-shaped reinforcing ribs 9. This evenly distributes the weight of the door and the mechanical stress generated by opening and closing to the entire frame. To effectively resist sagging deformation, the mounting flange 10 has evenly distributed mounting holes 11 with metal bushings 12, which are connected to the cabinet by bolts. The metal bushings 12 ensure the wear resistance and deformation resistance of the mounting holes 11, ensuring a stable connection between the frame body 1 and the cabinet. The trapezoidal cross-section sealing strip 14 and the matching sealing groove 13 cause the sealing strip 14 to undergo elastic deformation under compression when the door is closed. The bottom expands and fits tightly against the inner wall of the door, filling the gap and blocking the exchange of airflow between the inside and outside, thus achieving a highly efficient seal. The coordinated action of all components achieves the dual functions of anti-sagging and sealing.
[0035] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A sealing frame structure for preventing sagging in an island cabinet, comprising a frame body (1) and a first screw hole (2), characterized in that: The four corners of the mouth frame body (1) are provided with a number of first screw holes (2), and the four corners of the mouth frame body (1) are provided with reinforcing corner pieces (3). The outer surface of the reinforcing corner piece (3) is provided with a number of second screw holes (4). Screws (5) pass through the middle of the first screw holes (2) and the second screw holes (4). An upper support beam (6) and a lower support beam (7) are welded to one side of the reinforcing corner piece (3). A number of support columns (8) are welded between the upper support beam (6) and the lower support beam (7). The outer side wall of the mouth frame body (1) is provided with a mounting flange (10). The outer surface of the mounting flange (10) is provided with a mounting hole (11). The inner side wall of the mouth frame body (1) is provided with a sealing groove (13). A sealing strip (14) is installed inside the sealing groove (13).
2. The anti-sagging sealed frame structure for an island cabinet according to claim 1, characterized in that: The reinforcing corner piece (3) has an L-shaped structure, and the inner side of the reinforcing corner piece (3) is closely connected to the outer side of the mouth frame body (1), and the reinforcing corner piece (3) is fixedly connected to the mouth frame body (1) by screws (5).
3. The anti-sagging sealed frame structure for an island cabinet according to claim 1, characterized in that: The upper support beam (6) and the lower support beam (7) are designed to be parallel to each other, and the upper support beam (6) and the lower support beam (7) are arranged along the length direction of the frame body (1), and two sets of the upper support beam (6) and the lower support beam (7) are arranged symmetrically along the frame body (1).
4. The anti-sagging sealed frame structure for an island cabinet according to claim 1, characterized in that: The support column (8) is a hollow cylindrical structure, and the inside of the support column (8) is welded with reinforcing ribs (9), which are in the shape of a cross.
5. The anti-sagging sealed frame structure for an island cabinet according to claim 4, characterized in that: Multiple sets of mounting holes (11) are evenly opened along the outer surface of the mounting flange (10), and metal bushings (12) are fitted and connected inside each mounting hole (11).
6. The anti-sagging sealed frame structure for an island cabinet according to claim 1, characterized in that: The cross-section of the sealing strip (14) is trapezoidal, and the shape of the sealing groove (13) is adapted to the sealing strip (14).