Hard extruded cabinet opening for display cabinets

Abstract

The utility model relates to display cabinet technical field, concretely is a kind of hard extrusion cabinet mouth for display cabinet, including upper cabinet mouth and symmetrically arranged left and right cabinet mouth, upper cabinet mouth and left and right cabinet mouth are enclosed to form the frame structure of adaptation display cabinet opening;The section of frame structure is provided with a section of heightening section, and the heightening section is used to increase the spacing between the top plate of two-stage U-shaped shell box body without light box and inner bag top plate, to thicken top foam layer;The end of left and right cabinet mouth close to upper cabinet mouth all extends outward with extension section, and upper cabinet mouth and left and right cabinet mouth are assembled in three-stage light box splicing box body and two-stage U-shaped shell box body without light box, realize the two kinds of box body share same foam mould.The hard extrusion cabinet mouth for display cabinet, by setting heightening section in frame structure, cleverly compensate the difference of two-stage U-shaped shell box body without light box and three-stage light box splicing box body in top plate spacing, so that same cabinet mouth can simultaneously adapt two kinds of box structure.

Description

Technical Field

[0001] This utility model relates to the field of display cabinet technology, and more specifically, to a hard extruded cabinet opening for display cabinets. Background Technology

[0002] Display cases, as core equipment for commercial retail, food refrigeration and preservation, and product display, are widely used in supermarkets, convenience stores, restaurants, and other places. Their structural rationality directly affects the display effect, insulation performance, and manufacturing costs. The cabinet opening, as a key component of the display case, not only undertakes the functions of sealing and protection but also needs to be adapted to the cabinet structure to ensure the molding quality and assembly precision of the foam layer.

[0003] Currently, display cases on the market are mainly divided into two types: three-tiered with light boxes and two-tiered without light boxes. The two types have significantly different cabinet structures: three-tiered display cases with light boxes use a split cabinet design with side and back panels joined together, and have an upper crossbeam, resulting in a larger gap between the top panel of the cabinet and the top panel of the inner liner; two-tiered display cases without light boxes use an integrated U-shaped shell cabinet without an independent upper crossbeam, resulting in a relatively smaller gap between the top panel of the cabinet and the top panel of the inner liner. Due to the structural differences between the two types of cabinets, the corresponding cabinet opening designs need to be specifically adapted, making them incompatible.

[0004] In actual production, when switching between two cabinet structures according to customer needs, the existing cabinet openings may cause a series of problems due to insufficient adaptability: First, the difference in the distance between the top panel of the cabinet and the top panel of the inner liner means that the original foaming molds cannot be used interchangeably, requiring the creation of new dedicated foaming molds, which significantly increases production costs and prolongs the product development cycle; Second, the top foaming layer of the second-stage U-shaped shell cabinet without light boxes is generally thin due to spacing limitations, affecting the thermal insulation performance of the display cabinet and reducing energy efficiency; Third, gaps are easily generated during the assembly of the cabinet opening and the side panels of the cabinet, which not only compromises the airtightness of the display cabinet but also affects the overall structural stability and aesthetic appearance.

[0005] Furthermore, existing cabinet openings mostly employ a single structural design, lacking targeted optimization in material selection and connection methods, further exacerbating problems such as insufficient assembly precision and structural strength. Therefore, developing a universal rigid extrusion cabinet opening that can simultaneously adapt to two cabinet structures and balance foam layer thickness and assembly gap control has become a pressing technical challenge in this field. Utility Model Content

[0006] The purpose of this utility model is to provide a rigid extruded cabinet opening for display cabinets, so as to solve the problem mentioned in the background art that when switching between two cabinet structures according to customer needs, the existing cabinet opening will cause a series of problems due to insufficient adaptability.

[0007] To achieve the above objectives, this utility model provides a hard extruded cabinet opening for a display cabinet, including an upper cabinet opening and symmetrically arranged left and right cabinet openings. The upper cabinet opening and the left and right cabinet openings enclose a frame structure adapted to the opening of the display cabinet. The cross-section of the frame structure is provided with a heightening section, which is used to increase the distance between the top plate and the inner liner top plate of the second-stage U-shaped shell box without lightbox, so as to thicken the top foam layer. The ends of the left and right cabinet openings near the upper cabinet opening both have extension sections extending outward. The upper cabinet opening and the left and right cabinet openings are universally assembled on the third-stage spliced ​​box box with lightbox and the second-stage U-shaped shell box box without lightbox, so that the two types of boxes can share the same foaming mold.

[0008] This design utilizes a frame structure consisting of an upper cabinet opening and symmetrical left and right cabinet openings to create a basic form that adapts to the opening of the display cabinet. A height extension section is specifically designed to compensate for the insufficient spacing between the top panel and the inner liner top panel of the second-tier U-shaped shell cabinet without a lightbox. Simultaneously, an extension section optimizes the fit and assembly. The core design logic is to adjust the structural adaptability so that the same cabinet opening can accommodate both the large spacing requirements of the third-tier cabinet with lightboxes and the small spacing requirements of the second-tier U-shaped shell cabinet without a lightbox, thus breaking the limitation of dedicated cabinet openings for both types of cabinets.

[0009] Preferably, the extension section is 1.5mm long and is used to fill the assembly gap between the cabinet opening and the side panel of the display cabinet body.

[0010] This setting is based on the actual measurement data of the assembly gap between the cabinet opening and the side panel of the box. The length of the extension section is precisely set to 1.5mm. This size matches the common assembly gap in actual production. The gap space can be directly offset by physical filling, avoiding sealing failure caused by size deviation.

[0011] Preferably, the height of the heightening section is 5-15mm, and the heightening section is continuously or segmented along the circumference of the frame structure.

[0012] This design combines the spacing requirements of the second-order U-shaped shell without lightbox with the process standards for foam layer molding, limiting the height of the extended section to 5-15mm. This range ensures that the foam layer thickness meets the insulation requirements without causing material waste or structural redundancy due to excessive height. The continuous or segmented design can be flexibly adjusted according to the specific specifications of the display cabinet (such as size and load-bearing requirements) to adapt to different production scenarios.

[0013] Preferably, the extension section and the left and right cabinet openings are integrally formed, and the extension direction of the extension section is consistent with the thickness direction of the cabinet side panel.

[0014] This feature uses a one-piece molding process for the extension section and the left and right cabinet openings, which avoids the weakness caused by splicing structures. At the same time, it ensures that the extension direction is consistent with the thickness direction of the cabinet side panel, so that the extension section can accurately fit the side panel surface and maximize the filling effect of the gap.

[0015] Preferably, the upper cabinet opening and the left and right cabinet openings are made of ABS engineering plastic or aluminum alloy, and the inner surfaces of the upper cabinet opening and the left and right cabinet openings are provided with a rough anti-slip structure adapted to the foam layer.

[0016] This feature uses ABS engineering plastic or aluminum alloy material, which combines lightweight, high strength and low temperature resistance, making it suitable for the working environment of the display case; the rough anti-slip structure on the inner surface increases the contact friction with the foam layer, improving the bonding strength between the two and preventing the foam layer from falling off during long-term use.

[0017] Preferably, a positioning slot is provided at the connection between the upper cabinet opening and the left and right cabinet openings. The positioning slot is used to achieve precise docking between the upper cabinet opening and the left and right cabinet openings, and a sealing adhesive layer is provided at the docking point.

[0018] This feature, with its positioning slots, achieves precise alignment between the upper cabinet opening and the left and right cabinet openings through a convex-concave mating structure, reducing assembly errors. The sealing adhesive layer fills the joint gaps, forming double protection, which not only strengthens the tightness of the structural connection but also further blocks the airflow channel.

[0019] Preferably, the outer wall of the heightened section is provided with reinforcing ribs, which extend along the height direction of the heightened section to improve the structural strength of the cabinet opening.

[0020] The added height of this section may lead to a decrease in structural strength. The reinforcing ribs installed along the height direction can increase the stress support points, disperse external pressure and its own weight, and improve the bending and deformation resistance of the added section, which is in line with the strengthening design logic of structural mechanics.

[0021] Preferably, the outer edges of the upper cabinet opening and the left and right cabinet openings are provided with rounded corner transition joints.

[0022] This rounded corner transition structure eliminates sharp edges and corners, preventing injuries caused by bumps during assembly or use, and also optimizing the product's appearance and texture, meeting the aesthetic design requirements of commercial display equipment.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows: This display case utilizes a rigid extrusion process to cleverly compensate for the difference in top panel spacing between a two-tier U-shaped shell without a lightbox and a three-tier spliced ​​shell with a lightbox by incorporating an extended section in the frame structure. This allows the same cabinet opening to accommodate both shell structures simultaneously. This approach avoids the need to create new foaming molds when switching shells, significantly reducing mold investment costs and product development cycles, improving the utilization rate of production resources, and enhancing the product's price competitiveness in the market.

[0024] The height-enhanced section (5-15mm) effectively increases the distance between the top panel of the second-stage U-shaped shell without lightbox and the top panel of the inner liner, providing ample molding space for the foam layer and significantly increasing its thickness. This improvement greatly enhances the thermal insulation effect of the display case, reduces cold loss, lowers energy consumption, aligns with the energy-saving and environmentally friendly industrial development trend, and extends the shelf life of food and other goods inside the display case.

[0025] The 1.5mm extension at the ends of the left and right cabinet openings precisely fills the assembly gap between the cabinet opening and the side panel of the cabinet body. Combined with the positioning slots and sealing adhesive layer at the connection points, this not only improves the assembly precision of the cabinet opening and the cabinet body but also enhances the overall structural airtightness, effectively preventing the infiltration of outside air and the leakage of internal cold air. At the same time, the integrated molding structure of the extension and the left and right cabinet openings further improves the structural integrity and load-bearing capacity of the cabinet openings, avoiding problems such as loosening and deformation during assembly.

[0026] Made of ABS engineering plastic or aluminum alloy, the cabinet opening is both lightweight and structurally strong. The rough, non-slip surface of the inner surface enhances the bond with the foam layer, preventing it from peeling off. The reinforcing ribs on the outer wall of the raised section further improve the cabinet opening's resistance to deformation and extend its service life. The rounded corners of the outer edges not only enhance the product's aesthetics but also avoid safety hazards caused by sharp edges, improving user safety. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 A magnified view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the cross-sectional structure of the upper cabinet opening in this utility model; Figure 4 This is a schematic diagram of the box assembly of this utility model; Figure 5 This utility model Figure 4 A magnified view of a portion of point B in the middle; The meanings of the labels in the diagram are as follows: 1. Left and right cabinet openings; 2. Top cabinet opening; 21. Rough, non-slip structure; 22. Rounded corner transition structure; 3. Height section; 4. Extension section; 5. Positioning slot. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides a hard extruded cabinet opening for a display cabinet, such as... Figures 1-5 As shown, it includes an upper cabinet opening 2 and symmetrically arranged left and right cabinet openings 1. The upper cabinet opening 2 and the left and right cabinet openings 1 enclose a frame structure that adapts to the opening of the display cabinet. The cross-section of the frame structure is provided with a heightening section 3, which is used to increase the distance between the top plate and the inner top plate of the second-stage U-shaped shell box without lightbox, so as to thicken the top foam layer. The ends of the left and right cabinet openings 1 near the upper cabinet opening 2 both have extension sections 4 extending outward. The upper cabinet opening 2 and the left and right cabinet openings 1 are universally assembled on the third-stage spliced ​​box with lightbox and the second-stage U-shaped shell box without lightbox, so that the two types of boxes can share the same foaming mold.

[0030] The frame structure, formed by "upper cabinet opening 2 + symmetrically arranged left and right cabinet openings 1", is adapted to the opening of the display cabinet, providing a basic form for assembly. A heightened section 3 is specifically designed into the cross-section of the frame structure to precisely compensate for the short distance between the top plate and the inner liner top plate of the second-tier U-shaped shell box without lightboxes. Simultaneously, the extension sections 4 of the left and right cabinet openings 1 near the ends of the upper cabinet opening 2 are used to optimize the assembly fit. The core logic is to adjust the structural adaptability so that the same set of upper cabinet openings 2 and left and right cabinet openings 1 can both match the large spacing requirements of the third-tier lightbox splicing box and meet the small spacing requirements of the second-tier U-shaped shell box without lightboxes, breaking the limitation of dedicated cabinet openings for the two types of boxes.

[0031] This allows the upper cabinet opening 2 and the left and right cabinet openings 1 to simultaneously adapt to two types of cabinets, enabling both to share the same foaming mold. This completely solves the industry pain point of needing to open new molds when switching cabinets, significantly reducing production investment and R&D cycle. At the same time, it lays the structural foundation for subsequent thickening of the foam layer by increasing the height section 3 and eliminating assembly gaps by extending the section 4, taking into account both versatility and core functional requirements.

[0032] In this embodiment, the extension section 4 is 1.5mm long and is used to fill the assembly gap between the cabinet opening and the side panel of the display cabinet body.

[0033] Based on the measured data of the assembly gap between the cabinet opening and the side panel of the box, the length of the extension section 4 is precisely set to 1.5mm. This size is completely matched with the common assembly gap in actual production. The physical filling effect of the extension section 4 can directly offset the gap space and avoid sealing failure caused by dimensional deviation.

[0034] The 1.5mm extension section 4 precisely fills the assembly gap between the cabinet opening and the side panel of the display cabinet body, effectively blocking the infiltration of external air and the leakage of internal cold air, significantly improving the sealing performance of the display cabinet; at the same time, it optimizes the flatness of the overall appearance and avoids structural loosening or shaking caused by the gap.

[0035] Specifically, the height of the heightening section 3 is 5-15mm, and the heightening section 3 is continuously set or segmented along the circumference of the frame structure.

[0036] Combining the spacing requirements of the second-order U-shaped shell without lightbox and the process standards for foam layer molding, the height of the extension section 3 is limited to 5-15mm. This range ensures that the foam layer thickness meets the insulation design requirements without causing material waste or structural redundancy due to excessive height. The design of extension section 3, which can be set continuously or in segments along the circumference of the frame structure, can be flexibly adjusted according to the specific specifications of the display cabinet, such as size and load-bearing requirements, to adapt to different production scenarios.

[0037] The stable and thickened top foam layer significantly improves the thermal insulation performance of the display cabinet and reduces the energy consumption of the equipment. The segmented setting option enhances the design flexibility of the product, allowing the heightened section 3 to be adapted to display cabinets of various specifications, thus expanding the product's applicability.

[0038] Furthermore, the extension section 4 and the left and right cabinet openings 1 are integrally formed, and the extension direction of the extension section 4 is consistent with the thickness direction of the cabinet side panel.

[0039] The extension section 4 and the left and right cabinet openings 1 are made into a whole by adopting an integrated molding process, which avoids the problem of weak strength caused by splicing structure. At the same time, it ensures that the extension direction of the extension section 4 is consistent with the thickness direction of the cabinet side panel, so that the extension section 4 can accurately fit the side panel surface and maximize the filling gap function.

[0040] Improve the structural integrity and deformation resistance of the left and right cabinet openings 1 and extension section 4 to prevent extension section 4 from falling off or loosening during long-term use; ensure the accuracy of filling the assembly gaps to further enhance the sealing effect and the overall structural stability of the display cabinet.

[0041] Furthermore, the upper cabinet opening 2 and the left and right cabinet openings 1 are made of ABS engineering plastic or aluminum alloy, and the inner surfaces of the upper cabinet opening 2 and the left and right cabinet openings 1 are provided with a rough anti-slip structure 21 adapted to the foam layer.

[0042] The upper cabinet opening 2 and the left and right cabinet openings 1 are made of ABS engineering plastic or aluminum alloy. This type of material combines lightweight, high strength and low temperature resistance, which can be adapted to the working environment of the display cabinet. A rough anti-slip structure 21 is set on the inner surface of the upper cabinet opening 2 and the left and right cabinet openings 1. By increasing the contact friction with the foam layer, the bonding firmness of the two is improved, and the foam layer is prevented from falling off during long-term use.

[0043] It takes into account the structural strength, lightweight requirements and durability of the upper cabinet opening 2 and the left and right cabinet openings 1, and extends the service life of the product; the rough and anti-slip structure 21 ensures the stable bonding between the foam layer and the cabinet opening, avoids the decrease in thermal insulation performance caused by the foam layer falling off, and ensures the long-term thermal insulation effect of the display cabinet.

[0044] Furthermore, a positioning slot 5 is provided at the connection between the upper cabinet opening 2 and the left and right cabinet openings 1. The positioning slot 5 is used to achieve precise docking between the upper cabinet opening 2 and the left and right cabinet openings 1, and a sealing adhesive layer is provided at the docking point.

[0045] Positioning slots 5 are set at the connection between the upper cabinet opening 2 and the left and right cabinet openings 1. The concave and convex mating structure enables precise alignment between the two, reducing assembly errors. A sealing layer is set at the joint to fill the joint gap, forming a dual guarantee of "mechanical positioning + sealing protection", which not only strengthens the tightness of the structural connection, but also further blocks the air circulation channel.

[0046] The positioning slot 5 improves the assembly efficiency and precision of the upper cabinet opening 2 and the left and right cabinet openings 1, avoiding secondary gap problems caused by docking deviation; the sealing adhesive layer and the extension section 4 form a synergistic sealing effect, significantly enhancing the overall sealing performance, while improving the structural stability of the cabinet opening and preventing loosening or deformation at the docking point.

[0047] Furthermore, the outer wall of the heightened section 3 is provided with reinforcing ribs, which extend along the height direction of the heightened section 3 to enhance the structural strength of the cabinet opening.

[0048] The increased height of section 3 may lead to a decrease in structural strength. Therefore, reinforcing ribs are installed along the height of section 3. This can increase the number of load-bearing support points, disperse external pressure and its own weight, and improve the bending and deformation resistance of section 3, which is in line with the strengthening design logic of structural mechanics.

[0049] Effectively prevent deformation of the heightened section 3 during transportation, installation, or long-term use, ensuring the structural accuracy and service life of the cabinet opening; ensure that the heightened section 3 always maintains its designed shape and stably performs the core function of the thickened top foam layer.

[0050] Furthermore, the outer edges of the upper cabinet opening 2 and the left and right cabinet openings 1 are provided with rounded corner transition structures 22.

[0051] A rounded corner transition structure 22 is set on the outer edge of the upper cabinet opening 2 and the left and right cabinet openings 1. By eliminating sharp corners, it not only avoids personnel injury caused by bumps during assembly or use, but also optimizes the appearance and texture of the product, meeting the aesthetic design and safe use requirements of commercial display equipment.

[0052] The rounded corner transition structure 22 enhances the safety of product use and reduces the safety hazards caused by sharp corners; it also optimizes the appearance of the display cabinet, enhances the competitiveness of the product in the market, and reduces the problem of dust accumulation and difficulty in cleaning sharp corners, making daily maintenance easier.

[0053] When using the hard extrusion cabinet opening of this utility model, the upper cabinet opening 2 and the left and right cabinet openings 1 are first prepared by using ABS engineering plastic or aluminum alloy material through hard extrusion process according to production needs, to ensure the dimensional accuracy of each component, especially the height of the height section 3 (5-15mm), the length of the extension section 4 (1.5mm), and the matching dimensions of the positioning slot 5 meet the design standards; at the same time, it is ensured that the rough anti-slip structure 21, the reinforcing ribs and the rounded corner transition structure 22 are formed completely.

[0054] Cabinet assembly stage: Connect the upper cabinet opening 2 with the left and right cabinet openings 1 through the positioning slots 5. Use the concave and convex fit of the slots to achieve precise positioning and reduce assembly errors. After the connection is completed, apply a layer of sealant to the connection to enhance the structural sealing and connection stability, forming a complete frame structure.

[0055] Assembly stage for fitting the enclosure: When adapting to a three-tiered lightbox splicing cabinet: directly align and assemble the assembled cabinet frame with the opening of the splicing cabinet. The basic dimensions of the frame structure can match the large spacing requirements of the cabinet. The extension section 4 fits into the side panel of the cabinet, initially eliminating assembly gaps.

[0056] When adapting to a second-order U-shaped shell enclosure without a light box: the heightening section 3 of the frame increases the distance between the top plate of the enclosure and the top plate of the inner liner, leaving sufficient space for the foam layer; at the same time, the extension section 4 precisely fills the gap between the cabinet opening and the side plate of the enclosure to ensure a good fit.

[0057] Foaming stage: After the cabinet opening and the cabinet body are assembled and fixed, foaming is carried out, and foam material is filled into the space between the cabinet opening and the inner liner. At this time, the heightening section 3 ensures the thickness of the top foam layer, and the rough anti-slip structure 21 enhances the bonding strength between the foam layer and the inner surface of the cabinet opening, preventing the foam layer from falling off.

[0058] Final protection stage: After foaming and molding, check the assembly accuracy, sealing performance, and structural integrity of the cabinet opening and the cabinet body. Reinforcing ribs effectively prevent deformation of the heightened section 3, the sealing layer and the extension section 4 work together to block air penetration, and the rounded corner transition structure 22 avoids damage from bumps during use, ultimately forming a display cabinet structure that combines versatility, insulation, and stability.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hard-extruded cabinet opening for a display case, characterized in that: It includes an upper cabinet opening (2) and symmetrically arranged left and right cabinet openings (1). The upper cabinet opening (2) and the left and right cabinet openings (1) enclose a frame structure adapted to the opening of the display cabinet. The cross section of the frame structure is provided with a heightening section (3). The heightening section (3) is used to increase the distance between the top plate and the inner top plate of the second-stage U-shaped shell box without light box, so as to thicken the top foam layer. The ends of the left and right cabinet openings (1) near the upper cabinet opening (2) are extended outward with extension sections (4). The upper cabinet opening (2) and the left and right cabinet openings (1) are universally assembled on the third-stage spliced ​​box with light box and the second-stage U-shaped shell box without light box, so that the two types of boxes can share the same foaming mold.

2. The hard extruded cabinet opening for a display case according to claim 1, characterized in that: The extension section (4) is 1.5 mm long and is used to fill the assembly gap between the cabinet opening and the side panel of the display cabinet body.

3. The hard extruded cabinet opening for a display case according to claim 1, characterized in that: The height of the heightening section (3) is 5-15mm, and the heightening section (3) is continuously or segmented along the circumference of the frame structure.

4. The hard extruded cabinet opening for a display case according to claim 1, characterized in that: The extension section (4) and the left and right cabinet openings (1) are integrally formed, and the extension direction of the extension section (4) is consistent with the thickness direction of the cabinet side plate.

5. The hard extruded cabinet opening for a display case according to claim 1, characterized in that: The upper cabinet opening (2) and the left and right cabinet openings (1) are made of ABS engineering plastic or aluminum alloy, and the inner surfaces of the upper cabinet opening (2) and the left and right cabinet openings (1) are provided with a rough anti-slip structure (21) adapted to the foam layer.

6. The hard extruded cabinet opening for a display case according to claim 1, characterized in that: A positioning slot (5) is provided at the connection between the upper cabinet opening (2) and the left and right cabinet openings (1). The positioning slot (5) is used to achieve precise docking between the upper cabinet opening (2) and the left and right cabinet openings (1), and a sealing adhesive layer is provided at the docking point.

7. The hard extruded cabinet opening for a display case according to claim 1, characterized in that: The outer wall of the heightened section (3) is provided with reinforcing ribs, which extend along the height direction of the heightened section (3) to enhance the structural strength of the cabinet opening.

8. The hard extruded cabinet opening for a display case according to claim 1, characterized in that: The outer edges of the upper cabinet opening (2) and the left and right cabinet openings (1) are provided with rounded corner transition structures (22).

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