A door body and a cooking equipment

Abstract

The utility model relates to cooking equipment technical field discloses a door body and cooking equipment, including door lining, inner door board subassembly, be located in the front side of door lining, and the periphery of inner door board subassembly with the lateral wall of door lining defines the cavity for containing heat insulating material, heat insulating material sets up in the cavity, clamp plate, covers in the front side of heat insulating material, and with door lining fixed connection, outer door board, be located in the front side of clamp plate, handle subassembly, be located in the front side of outer door board, mounting support, be located between outer door board and door lining, handle subassembly is fixed on outer door board through mounting support, and mounting support with door lining fixed connection. The above-mentioned door body, through filling heat insulating material between door lining and clamp plate, has significantly improved the heat insulation effect while greatly reducing the overall weight of the door body. In addition, the door body uses an independent mounting bracket as a connecting piece, avoiding direct contact between the door lining and the outer door plate, effectively reducing heat conduction, forming a thermal bridge block, and further reducing the temperature rise of the door body.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a door and cooking equipment. Background Technology

[0002] In high-temperature self-cleaning mode, the oven cavity temperature can reach approximately 450℃, while existing oven doors have poor heat insulation. To reduce the temperature rise on the door surface, the common approach is to simply increase the number of glass layers. However, this not only increases the door's weight, affecting user experience, but also places higher demands on hinge connection strength and transport packaging cushioning performance, while increasing manufacturing costs. Therefore, how to improve heat insulation without significantly increasing the door's weight has become an urgent problem to be solved. Utility Model Content

[0003] Addressing the technical problems of poor heat insulation and heavy weight in existing door designs, this invention provides a door that significantly improves heat insulation while substantially reducing the overall weight of the door by filling the space between the door liner and the pressure plate with heat insulation material. Furthermore, the door uses independent mounting brackets as connectors, avoiding direct contact between the door liner and the outer door panel, effectively reducing heat conduction, creating thermal bridges, and further lowering the door's temperature rise.

[0004] This utility model provides a door body, including: Door lining; An inner door panel assembly is disposed on the front side of the door liner, and the periphery of the inner door panel assembly and the side wall of the door liner define a cavity for accommodating thermal insulation material; Thermal insulation material is disposed within the cavity; A pressure plate covers the front side of the thermal insulation material and is fixedly connected to the door liner; The outer door panel is located on the front side of the pressure plate; A handle assembly is located on the front side of the outer door panel; A mounting bracket is disposed between the outer door panel and the door liner; the handle assembly is fixed to the outer door panel via the mounting bracket, and the mounting bracket is fixedly connected to the door liner.

[0005] In some embodiments, the inner peripheral edge of the pressure plate is formed with an inner pressure rib, which is pressed onto the inner door panel assembly.

[0006] In some embodiments, the inner pressure rib has an arc-shaped cross-section.

[0007] In some embodiments, the front of the door liner is fixed with a plurality of connecting brackets arranged around the inner door panel assembly, and the inner door panel assembly is positioned between the plurality of connecting brackets; and the pressure plate is fixedly connected to the door liner through the plurality of connecting brackets.

[0008] In some embodiments, the pressure plate has a plurality of pressure plate mounting holes, and fasteners pass through the pressure plate mounting holes to fix the pressure plate to the connecting bracket; and the pressure plate has reinforcing ribs around the periphery of the pressure plate mounting holes.

[0009] In some embodiments, the outer door panel is provided with mounting through holes; The handle assembly includes a handle body and a handle seat disposed at at least one end of the handle body; the handle seat is provided with a connecting post that is positioned and connected to the mounting through hole of the door panel. The mounting bracket is provided with a connecting hole that mates with the connecting post of the handle seat and a second mounting part. The first fastener passes through the second mounting part and the connecting hole, and is securely connected to the connecting post.

[0010] In some embodiments, a trim piece is also included, which is disposed on the front side of the edge of the outer door panel, and the trim piece is provided with a trim piece through hole and a trim piece positioning hole; The handle base is provided with a positioning pin that is positioned and connected to the positioning hole of the decorative piece, and a first mounting part; The mounting bracket is provided with a bracket positioning hole that is positioned and connected to the positioning pin, and a third mounting part; The second fastener passes through the third mounting part and the through hole of the decorative part, and is fastened to the first mounting part.

[0011] In some embodiments, the mounting bracket is provided with a bracket mounting post, the door liner is provided with a door liner mounting hole that mates with the bracket mounting post, and a third fastener passes through the door liner mounting hole and is fastened to the bracket mounting post.

[0012] In some embodiments, a ventilation structure for heat dissipation is further included, the ventilation structure comprising: An air inlet is formed between the bottom of the door liner and the outer door panel; An airflow channel is formed between the outer door panel and the pressure plate, and the lower end of the airflow channel is connected to the air inlet; and An air outlet is provided on the upper part of the door liner, and the air outlet is connected to the upper end of the airflow channel.

[0013] This utility model also includes a cooking device, which includes the aforementioned door body.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are: The aforementioned door structure effectively blocks heat transfer from the inner liner to the outside by filling the space between the door liner and the pressure plate with heat insulation material. This structure replaces the traditional multi-layer glass insulation solution, significantly improving the insulation effect while greatly reducing the overall weight of the door. Furthermore, the door uses independent mounting brackets as connectors. On one hand, the mounting brackets connect the door liner, outer door panel, and handle assembly into a single unit, ensuring the structural strength and installation reliability of the door. On the other hand, the mounting brackets prevent direct contact between the door liner and the outer door panel, effectively reducing heat conduction, creating thermal bridges, and further lowering the door's temperature rise. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the door body of this utility model; Figure 2 This is an exploded view of the door body of this utility model; Figure 3 This is a schematic diagram and a partial enlarged view of the handle assembly in the door body of this utility model; Figure 4 This is a perspective view of the bracket installed in the door body of this utility model. Figure 5 This is a perspective view of the bracket installed in the door body of this utility model. Figure 6 This is a schematic diagram and a partial enlarged view of the structure of the decorative parts in the door body of this utility model; Figure 7 This is a partial cross-sectional view of the door body of this utility model; Figure 8 This is a schematic diagram of the structure of the door support in the door body of this utility model; Figure 9 This is a bottom view and a partial enlarged view of the door body of this utility model; Figure 10 This is an exploded view of the inner door portion of the door body of this utility model; Figure 11 This is a structural schematic diagram of the door liner and connecting bracket in the door body of this utility model; Figure 12 This is a schematic diagram of the structure of the pressure plate in the door body of this utility model; Figure 13 This is a schematic diagram of the ventilation and heat dissipation of the door body of this utility model; Explanation of reference numerals in the attached figures: 10-Outer door panel; 11-Mounting through hole; 20 - Ornament; 21 - Ornament through hole; 22 - Ornament positioning hole; 30 - Handle assembly; 31 - Handle body; 32 - Handle seat; 321 - Locating pin; 322 - Connecting post; 323 - First mounting part; 40 - Mounting bracket; 41 - Connecting hole; 42 - Bracket positioning hole; 43 - Second mounting part; 44 - Third mounting part; 45 - Bracket mounting column; 451 - Bracket positioning part; 51 - First fastener; 52 - Second fastener; 53 - Third fastener.

[0017] 60-Blower plate; 70-Door liner; 71-Door liner mounting hole; 72-Positioning structure; 73-Door liner forming; 74-Air outlet; 75-Air inlet; 80 - Door support; 81 - Positioning protrusion.

[0018] 90 - Pressure plate; 91 - Inner pressure rib; 92 - Pressure plate mounting hole; 93 - Reinforcing rib; 94 - Outer flange; 100 - Thermal insulation material; 110 - Inner door panel assembly; 120 - Connecting bracket; 130 - Hinge assembly. Detailed Implementation

[0019] 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.

[0020] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0022] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] Reference Figures 1-13 This is one embodiment of the door body of this utility model.

[0024] like Figure 2 and Figure 10 As shown, the door body includes a door liner 70, an inner door panel assembly 110, a heat insulation material 100, a pressure plate 90, an outer door panel 10, a handle assembly 30, and a mounting bracket 40.

[0025] Door liner 70 is usually a sheet metal part with a hollow design in the middle.

[0026] The inner door panel assembly 110, for example, may be one or more glass panels, is located on the front side of the door liner 70. The periphery of the inner door panel assembly 110 and the side walls of the door liner 70 define a cavity for accommodating the thermal insulation material 100.

[0027] Thermal insulation material 100 is installed inside the cavity, surrounding the inner door panel assembly 110. Thermal insulation material 100 can be made of thermal insulation cotton, which utilizes its low thermal conductivity to achieve thermal insulation.

[0028] The pressure plate 90, usually a sheet metal part, covers the front side of the insulation material 100 and is fixedly connected to the door liner 70.

[0029] The outer door panel 10, for example, can be a glass panel, located on the front side of the pressure plate 90.

[0030] The handle assembly 30 is located on the front side of the outer door panel 10 and is the part that the user directly operates.

[0031] A mounting bracket 40 is positioned between the outer door panel 10 and the door liner 70. The handle assembly 30 is fixed to the outer door panel 10 via the mounting bracket 40, and the mounting bracket 40 is fixedly connected to the door liner 70, thereby connecting the door liner 70, the outer door panel 10, and the handle assembly 30 into a single unit. The handle assembly 30, the mounting bracket 40, and the outer door panel 10 constitute the outer door portion of the door body. The door liner 70, the inner door panel assembly 110, the thermal insulation material 100, and the pressure plate 90 constitute the inner door portion of the door body.

[0032] The aforementioned door structure effectively blocks heat transfer from the inner liner to the outside by filling the space between the door liner 70 and the pressure plate 90 with heat insulation material 100. This structure replaces the traditional multi-layer glass insulation solution, significantly improving the insulation effect while greatly reducing the overall weight of the door. Furthermore, the door uses an independent mounting bracket 40 as a connector. On one hand, the mounting bracket 40 connects the door liner 70, the outer door panel 10, and the handle assembly 30 into a single unit, ensuring the structural strength and installation reliability of the door. On the other hand, the mounting bracket 40 avoids direct contact between the door liner 70 and the outer door panel 10, effectively reducing heat conduction, forming a thermal bridge, and further reducing the temperature rise of the door.

[0033] In some embodiments of this application, such as Figure 12 As shown, an inner pressure rib 91 is integrally formed on the inner peripheral edge of the pressure plate 90, protruding towards the inner door panel assembly 110. After the pressure plate 90 is fixedly connected to the door liner 70, the inner pressure rib 91 of the pressure plate 90 abuts against the front surface of the inner door panel assembly 110. The inner pressure rib 91 applies a continuous preload perpendicular to its surface to the inner door panel assembly 110, thereby firmly securing the inner door panel assembly 110 between the door liner 70 and the pressure plate 90, effectively preventing vibration and displacement during transportation or use. Furthermore, since the pressure direction applied by the inner pressure rib 91 is perpendicular to the surface of the inner door panel assembly 110, this means that when the inner door panel assembly 110 (especially the glass panel) undergoes thermal expansion at high temperatures, it can freely elongate in the length direction, greatly reducing the risk of glass breakage due to heat.

[0034] Furthermore, the inner pressure rib 91 is preferably an arc-shaped cross-section. The arc-shaped cross-section ensures a smooth contact between the inner pressure rib 91 and the inner door panel assembly 110, avoiding stress concentration and further reducing the risk of scratches or damage to the surface of the inner door panel assembly 110 under clamping force.

[0035] In some embodiments of this application, such as Figure 11 In order to reliably fix the pressure plate 90 and the door liner 70 and effectively position the inner door panel assembly 110, a plurality of connecting brackets 120 are fixed at the front of the door liner 70 and arranged around the inner door panel assembly 110. The connecting brackets 120 can be firmly connected by welding process.

[0036] Multiple connecting brackets 120 are arranged in an array along the periphery of the inner door panel assembly 110, and their inner sidewalls together form a positioning frame. When the inner door panel assembly 110 is installed, it is placed inside the positioning frame, and its circumferential sides cooperate with the inner sidewalls of the connecting brackets 120, thereby precisely defining the position of the inner door panel assembly 110 in the vertical and horizontal directions. The inner door panel assembly 110 is positioned among the multiple connecting brackets 120, which determines the vertical and horizontal position of the inner door panel assembly 110. Furthermore, inside the positioning frame formed by the connecting brackets 120, the door liner 70 is provided with a door liner profile 73 corresponding to the inner door panel assembly 110, which can improve the structural strength of the door liner 70.

[0037] Meanwhile, these connecting brackets 120 are also key structures for fixing the pressure plate 90. Multiple pressure plate mounting holes 92 are provided on the pressure plate 90, and corresponding flanged holes are provided on each connecting bracket 120. During assembly, fasteners (such as screws) pass through the pressure plate mounting holes 92 and flanged holes on the pressure plate 90 in sequence, fixing the pressure plate 90 to the connecting bracket 120. By fixing the pressure plate 90 to the connecting bracket 120, the installation and removal of the pressure plate 90 become very convenient. Maintenance personnel only need to unscrew the fasteners to remove the pressure plate 90, and then replace and repair the internal heat insulation material 100 or the inner door panel assembly 110, greatly improving the maintainability of the product.

[0038] In some embodiments of this application, in order to improve the structural strength and rigidity of the pressure plate 90 itself, a ring-shaped reinforcing rib 93 is integrally formed around each pressure plate mounting hole 92 by stamping or other processes.

[0039] Furthermore, the outer periphery of the pressure plate 90 has an outwardly bent flange 94 that bends backward (i.e., toward the door liner 70). The outwardly bent flange 94 not only serves as a structural reinforcing rib, increasing the edge rigidity of the entire pressure plate 90 and preventing it from twisting and deforming under external force or temperature changes, but also acts as a enclosure and protection, with its sidewalls covering and constraining the outer part of the insulation material 100 to prevent the insulation material 100 from shifting or its fibers from scattering.

[0040] In some embodiments of this application, the door assembly further includes two hinge assemblies 130, which are fixed to the door liner 70 to form an opening and closing mechanism. The door liner 70, hinge assemblies 130, inner door panel assembly 110, thermal insulation material 100, and pressure plate 90 constitute the inner door portion of the door assembly. The assembly process of the inner door portion is as follows: 1. Install hinge assembly 130. Secure hinge assembly 130 to door liner 70.

[0041] 2. Pre-install the inner door panel assembly 110 and the door liner 70. After the inner door panel assembly 110 is pre-installed, it is placed on the door liner 70 and initially positioned using the connecting bracket 120.

[0042] 3. Place the thermal insulation material 100. The thermal insulation material 100 is installed around the inner door panel assembly 110.

[0043] 4. Fix the pressure plate 90. The pressure plate 90 is pressed onto the front side of the heat insulation material 100 and the inner door panel assembly 110, and is fixedly connected to the connecting bracket 120 by screws to fix the two together.

[0044] In some embodiments of this application, to further improve the thermal insulation performance of the door, the inner door panel assembly 110 includes a fixing frame and two inner door panels. To minimize radiative heat transfer, both inner door panels are made of low-emissivity (Low-E) glass. Specifically, each Low-E glass layer is coated on one side, and the coated surfaces of both glass layers face the same side to form efficient thermal radiation reflection, reflecting heat from inside the door back to the interior, thereby effectively reducing heat transfer to the outside.

[0045] In some embodiments of this application, such as Figure 13 As shown, the door assembly further includes a ventilation structure for heat dissipation, which includes an air inlet 75, an airflow channel a, and an air outlet 74.

[0046] The air inlet 75 is located at the bottom of the door, specifically formed by the gap between the door liner 70 and the lower edge of the outer door panel 10. The location of the air inlet 75 at the bottom of the door utilizes the physical property that cold air has a higher density and naturally sinks, facilitating the entry of external cold air.

[0047] Airflow channel a is formed between outer door panel 10 and pressure plate 90, and the lower end of airflow channel is connected to air inlet 75.

[0048] An air outlet 74 is located in the upper part of the door liner 70 and is connected to the upper end of the airflow channel a, providing a path for the heated air to be discharged.

[0049] like Figure 13 As shown, the heat dissipation and heat insulation principle of the door body described in this application is explained as follows: 1. Heat Insulation: When heat generated inside the door (e.g., the equipment's inner liner) is transferred outwards, it first encounters the inner door panel assembly 110. The double-layered glass structure of the inner door panel assembly 110 forms a sealed air or inert gas layer, significantly reducing heat transfer through convection and conduction. Simultaneously, the synergistic effect of the coatings on the two layers of Low-E glass reflects most of the heat radiation from the inner liner back into the door, greatly reducing the efficiency of radiative heat transfer.

[0050] Meanwhile, the insulation material 100 inside the door further hinders heat conduction by utilizing its low thermal conductivity.

[0051] 2. Active heat dissipation circulation: Although the inner door panel assembly 110 and the insulation material 100 have significantly reduced heat transfer, some residual heat will still be conducted to the outer door panel 10. To dissipate this heat, the ventilation structure operates as follows: Cold air in: Low-temperature air (cold air) from the outside is drawn in through the air inlet 75 at the bottom of the door.

[0052] Heat exchange: The incoming cold air then flows into the airflow channel formed between the outer door panel 10 and the pressure plate 90. As the cold air flows upward along this channel, it will have a full heat exchange with the inner wall of the outer door panel 10, absorbing and carrying away the residual heat transferred from the inside to the outside.

[0053] Hot air exhaust: After absorbing heat, the hot air is exhausted to the outside of the door through the air outlet 74 located on the upper part of the door liner 70.

[0054] In some embodiments of this application, such as Figure 6 As shown, the door also includes a decorative element 20. The handle assembly 30, the decorative element 20, the outer door panel 10, and the mounting bracket 40 constitute the outer door portion of the door.

[0055] The decorative element 20 is typically a decorative strip made of metal or high-strength plastic, and is installed on the front side of the edge of the outer door panel 10 to beautify the appearance and protect the edge of the door panel. In this embodiment, the decorative element 20 has vertical portions located on the left and right sides of the door panel and a horizontal portion connecting the two vertical portions and located at the bottom of the door body. The vertical portions of the decorative element 20 are provided with decorative element through holes 21 and decorative element positioning holes 22.

[0056] like Figure 3 The handle assembly 30 includes a handle body 31 for a user to grip and a handle seat 32 disposed at at least one end of the handle body 31. In this embodiment, handle seats 32 are typically provided at both ends of the handle body 31, and correspondingly, two mounting through holes 11 are provided on the outer door panel 10. The handle seat 32 is provided with multiple connection and positioning structures: Locating pin 321: Extending from the handle base 32, its function is to engage with the trim positioning hole 22 on the trim 20, thereby accurately determining the position of the handle assembly 30 relative to the trim 20. This is one of the initial positioning references for the entire assembly system.

[0057] Connecting post 322: It also extends from the handle base 32 and its function is to pass through the mounting through hole 11 of the outer door panel 10 and connect with the mounting bracket 40 located on the rear side of the outer door panel 10.

[0058] First mounting section 323: is a pre-set structural area on handle base 32 for mounting second fastener 52.

[0059] See Figure 4 and Figure 5 The mounting bracket 40 is equipped with: Connection hole 41: used for positioning and mating with the connecting post 322 of the handle seat 32.

[0060] Bracket positioning hole 42: used for positioning connection with the positioning pin 321 of the handle base 32. It is worth noting that after the positioning pin 321 passes through the trim positioning hole 22 of the trim 20, it further engages with the bracket positioning hole 42 here, thereby locking the trim 20, handle assembly 30 and mounting bracket 40 in position based on the same positioning reference positioning pin 321.

[0061] The second mounting section 43 and the third mounting section 44 are structural areas for mounting the first fastener 51 and the second fastener 52, respectively.

[0062] like Figure 7 As shown, the first fastener 51, such as a screw, is assembled by passing through the second mounting portion 43 and the connecting hole 41 of the mounting bracket 40, and being fastened to the connecting post 322 (for example, the connecting post 322 has a threaded hole). This is the main load-bearing connection path.

[0063] The second fastener 52, such as another screw, is assembled by passing through the third mounting portion 44 of the mounting bracket 40 and the trim through-hole 21 of the trim 20, and is fastened to the first mounting portion 323 of the handle base 32. This is an auxiliary fastening and positioning path.

[0064] The outer door section uses the handle base 32 as the core positioning reference, and connects the various components in series to ensure the final assembly accuracy. The installation process of the outer door section is as follows: 1. Pre-install handle assembly 30 and trim 20. Insert the positioning pin 321 on the handle base 32 into the trim positioning hole 22 on the trim 20 to complete the initial positioning of the two outermost parts of the door.

[0065] 2. Install the outer door panel 10. Pass the mounting through holes 11 on both sides of the outer door panel 10 through the connecting posts 322 on the handle base 32 to initially position the outer door panel 10.

[0066] 3. Place the two mounting brackets 40. From the rear side of the outer door panel 10, place the mounting brackets 40 into position, with the connecting post 322 already passing through the outer door panel 10 and inserted into the connecting hole 41 of the mounting bracket 40, and the positioning pin 321 already passing through the trim piece 20 and further inserted into the bracket positioning hole 42 of the mounting bracket 40. At this point, the positional relationship of the four components—trimmed piece 20, handle base 32, outer door panel 10, and mounting brackets 40—is initially locked.

[0067] 4. Tighten the first fastener 51. Pass the first fastener 51 through the second mounting part 43 of the mounting bracket 40, and finally screw it into the connecting post 322 of the handle seat 32 and tighten it. This forms the main connection point.

[0068] 5. Tighten the second fastener 52. Pass the second fastener 52 through the third mounting part 44 on the mounting bracket 40 and fasten it to the first mounting part 323 on the handle seat 32. This forms a second connection point, which further enhances the stability of the structure.

[0069] To connect the inner door portion to the outer door portion, the mounting bracket 40 is designed with a rearwardly extending bracket mounting post 45. The door liner 70 has a corresponding door liner mounting hole 71. By passing a third fastener 53, such as a screw, through the door liner mounting hole 71 and screwing it into the bracket mounting post 45, the door liner 70 can be securely installed on the mounting bracket 40.

[0070] Furthermore, a bracket positioning part 451 of a specific shape, such as a cross-shaped protrusion, is provided on the bracket mounting post 45 of the mounting bracket 40. Correspondingly, a positioning structure 72, such as a cross-shaped groove formed by pressing, is provided on the door liner 70 to precisely mate with the cross-shaped protrusion. During assembly, the cross-shaped protrusion and the cross-shaped groove must first be aligned and inserted to define the position of the door liner 70 relative to the mounting bracket 40, and then the third fastener 53 is used for fastening.

[0071] In some embodiments of this application, such as Figure 8 and Figure 9 As shown, the door also includes a door support 80, which is located on the side of the outer door panel 10 opposite to the handle assembly 30 (usually the lower side of the door). Its function is to connect the lower part of the outer door panel 10, and it is glued and fixedly connected to the outer door panel 10. The door support 80 is provided with positioning features, such as downwardly protruding positioning protrusions 81, which can be fixedly connected by screws after being positioned against the door liner 70.

[0072] In some embodiments of this application, the two handle seats 32 have identical structures and are symmetrically arranged about the center of the handle body 31. That is, the two handle seats 32 are interchangeable parts, and there is no need to distinguish between the left and right handle seats 32 during installation, eliminating the risk of misassembly. At the same time, they can be manufactured using a single mold, reducing production costs.

[0073] In some embodiments of this application, the handle base 32 and the mounting bracket 40 are both injection molded parts. Through reasonable structural design and reliable connection method, the door body has sufficient connection strength, while reducing production costs.

[0074] In addition, both the mounting bracket 40 and the handle base 32 are made of injection molded parts, which can form a heat-blocking connection structure, reducing the risk of burns from high temperatures on the handle assembly 30.

[0075] In some embodiments of this application, see Figure 5 The connecting hole 41 is an oblong hole, with its major axis aligned with the length of the handle body 31. The oblong shape, rather than a round hole, of the connecting hole 41 provides a certain tolerance during assembly. In actual production, manufacturing tolerances are unavoidable in the dimensions and hole positions of various parts. The oblong hole design allows the connecting post 322 of the handle seat 32 to have a small range of positional adjustment along the handle's length on the mounting bracket 40, effectively compensating for accumulated tolerances and ensuring smooth assembly even with tolerances present. This avoids installation difficulties or stress concentration issues caused by misaligned holes. Furthermore, because the oblong hole restricts movement perpendicular to the handle's length, it does not sacrifice positioning accuracy in that direction.

[0076] In some embodiments of this application, such as Figure 4 As shown, the third mounting part 44 of the mounting bracket 40 is cylindrical and is inclined relative to the surface of the outer door panel 10; the third mounting part 44 is provided with a mounting through hole parallel to its axis.

[0077] The third mounting section 44 is designed as an inclined cylinder, meaning the second fastener 52 will be installed at an inclined angle. This inclined installation design offers significant process advantages. In traditional vertical installations, if the component structure is complex, a complex inclined ejection mechanism may need to be designed on the mold, which significantly increases the mold manufacturing cost and complexity, and reduces production efficiency. By designing the installation direction as inclined, the injection molded part, the mounting bracket 40, can be easily demolded during mold opening without the need for an inclined ejection mechanism, simplifying the mold.

[0078] Furthermore, such as Figure 3As shown, to accommodate the inclined second fastener 52, the first mounting portion 323 of the handle seat 32 is configured as a cylindrical structure with a semi-circular groove; wherein, the extending direction of the semi-circular groove is adapted to the axial direction of the third mounting portion 44, for accommodating and partially engaging with the second fastener 52. The first mounting portion 323 has a semi-circular groove, rather than a complete threaded hole. When the second fastener 52 is screwed in at an inclined angle, a portion of its screw falls into this semi-circular groove and forms partial contact and compression with the sidewall of the groove. Therefore, the mold of the handle seat 32 does not need to be designed with an inclined ejection mechanism, simplifying the mold and reducing costs.

[0079] In some embodiments of this application, the third mounting portion 44 extends from the base of the mounting bracket 40 toward the trim piece 20 and passes through the trim piece through hole 21 to abut against the first mounting portion 323; and the side wall of the third mounting portion 44 abuts against the side edge of the outer door panel 10. The abutment between the left and right sides of the outer door panel 10 and the third mounting portion 44 can further limit the displacement of the outer door panel 10 in the left and right directions, enhance the structural rigidity and connection stability of the entire door body, and further ensure positioning accuracy.

[0080] In some embodiments of this application, see Figure 7 A deflector 60 is also provided on the rear side of the outer door panel 10. The deflector 60 is an additional component, typically made of sheet metal, and is sandwiched between the head of the first fastener 51 and the second mounting portion 43 of the mounting bracket 40. It has two main functions: Deflection function: The deflector 60 can guide airflow or prevent liquids such as cleaning agents from contaminating specific areas of the outer door panel 10, such as the window area, when cleaning the door.

[0081] Gasket function: The deflector plate 60 acts as a large-area gasket. The force of the first fastener 51 is no longer applied directly to a small point on the mounting bracket 40, but is distributed to a larger area through the deflector plate 60, reducing local stress and improving connection reliability.

[0082] In some embodiments of this application, a rearwardly extending bracket mounting post 45 is designed on the mounting bracket 40 to connect the door liner 70 to the outer door portion. The door liner 70 has corresponding door liner mounting holes 71. The door liner 70 can be securely mounted on the mounting bracket 40 by passing a third fastener 53, such as a screw, through the door liner mounting hole 71 and screwing it into the bracket mounting post 45. This embodiment utilizes the mounting bracket 40 as an intermediate connector to link the inner and outer layers of the door body into a single unit, forming a complete and stable door structure while maintaining ease of assembly.

[0083] Furthermore, such as Figure 4As shown, a bracket positioning part 451 of a specific shape, such as a cross-shaped protrusion, is provided on the bracket mounting post 45 of the mounting bracket 40. A positioning cavity is formed at the center of the cross-shaped protrusion. Correspondingly, a positioning structure 72 that can mate with the cross-shaped protrusion is provided on the circumference of the door liner mounting hole 71 on the door liner 70. For example, a protrusion formed by pressing that mates with the central positioning cavity of the cross-shaped protrusion is provided. During assembly, the cross-shaped protrusion must first be aligned with the protrusion and inserted to define the position of the door liner 70 relative to the mounting bracket 40, and then the third fastener 53 is used for fastening.

[0084] In some embodiments of this application, see Figure 8 and Figure 9 The door also includes a door support 80, which is located on the side of the outer door panel 10 opposite to the handle assembly 30, typically referring to the lower side of the door. Its function is to connect the lower part of the outer door panel 10, and it is glued and fixedly connected to the outer door panel 10. The door support 80 is provided with positioning features, such as downwardly protruding positioning protrusions 81, which abut against the door liner 70 and can be fixedly connected by screws after positioning.

[0085] The installation process for the aforementioned door components is as follows: 1. Pre-install handle assembly 30 and trim 20. Insert the positioning pin 321 on the handle base 32 into the trim positioning hole 22 on the trim 20 to complete the initial positioning of the two outermost parts of the door.

[0086] 2. Install the outer door panel 10. Pass the mounting through holes 11 on both sides of the outer door panel 10 through the connecting posts 322 on the handle base 32 to initially position the outer door panel 10.

[0087] 3. Place the two mounting brackets 40. From the rear side of the outer door panel 10, place the mounting brackets 40 into position, with the connecting post 322 already passing through the outer door panel 10 and inserted into the connecting hole 41 of the mounting bracket 40, and the positioning pin 321 already passing through the trim piece 20 and further inserted into the bracket positioning hole 42 of the mounting bracket 40. At this point, the positional relationship of the four components—trimmed piece 20, handle base 32, outer door panel 10, and mounting brackets 40—is initially locked.

[0088] 4. Tighten the first fastener 51. Pass the first fastener 51 through the second mounting part 43 of the mounting bracket 40, and finally screw it into the connecting post 322 of the handle seat 32 and tighten it. This forms the main connection point.

[0089] 5. Tighten the second fastener 52. Pass the second fastener 52 through the third mounting part 44 on the mounting bracket 40 and fasten it to the first mounting part 323 on the handle seat 32. This forms a second connection point, which further enhances the stability of the structure.

[0090] 6. Fix the door frame bracket 80. Attach the door frame bracket 80 to the back side of the outer door panel 10.

[0091] 7. Install the door liner 70. Place the inner layer of the door liner 70 into place from the back. The upper side uses the bracket positioning part 451 on the mounting bracket 40 to cooperate with the positioning structure 72 on the door liner 70, and the lower side uses the positioning protrusion 81 on the door body bracket 80 to abut against the edge of the door liner 70 to achieve the positioning of the door liner 70.

[0092] 8. Secure the door liner 70. Use the third fastener 53 to pass through the door liner mounting hole 71 of the door liner 70 and secure it to the bracket mounting post 45 on the mounting bracket 40 to complete the installation of the door liner 70.

[0093] This invention also includes a cooking device, such as an oven, steamer, or microwave oven, whose door portion adopts the door body described in any of the foregoing embodiments.

[0094] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. A door body, characterized in that, include: Door lining; An inner door panel assembly is disposed on the front side of the door liner, and the periphery of the inner door panel assembly and the side wall of the door liner define a cavity for accommodating thermal insulation material; Thermal insulation material is disposed within the cavity; A pressure plate covers the front side of the thermal insulation material and is fixedly connected to the door liner; The outer door panel is located on the front side of the pressure plate; A handle assembly is located on the front side of the outer door panel; A mounting bracket is disposed between the outer door panel and the door liner; the handle assembly is fixed to the outer door panel via the mounting bracket, and the mounting bracket is fixedly connected to the door liner.

2. The door body according to claim 1, characterized in that, The inner periphery of the pressure plate is formed with an inner pressure rib, which is pressed onto the inner door panel assembly.

3. The door body according to claim 2, characterized in that, The inner pressure rib has an arc-shaped cross-section.

4. The door body according to claim 1, characterized in that, The front of the door liner is fixed with a plurality of connecting brackets arranged around the inner door panel assembly, and the inner door panel assembly is positioned between the plurality of connecting brackets; and the pressure plate is fixedly connected to the door liner through the plurality of connecting brackets.

5. The door body according to claim 4, characterized in that, The pressure plate has multiple pressure plate mounting holes, and fasteners pass through the pressure plate mounting holes to fix the pressure plate to the connecting bracket; and the pressure plate has reinforcing ribs around the pressure plate mounting holes.

6. The door body according to any one of claims 1-5, characterized in that, The outer door panel has mounting through holes; The handle assembly includes a handle body and a handle seat disposed at at least one end of the handle body; the handle seat is provided with a connecting post that is positioned and connected to the mounting through hole of the door panel. The mounting bracket is provided with a connecting hole that mates with the connecting post of the handle seat and a second mounting part. The first fastener passes through the second mounting part and the connecting hole, and is securely connected to the connecting post.

7. The door body according to claim 6, characterized in that, It also includes a trim piece, which is disposed on the front side of the edge of the outer door panel, and the trim piece is provided with a trim piece through hole and a trim piece positioning hole; The handle base is provided with a positioning pin that is positioned and connected to the positioning hole of the decorative piece, and a first mounting part; The mounting bracket is provided with a bracket positioning hole that is positioned and connected to the positioning pin, and a third mounting part; The second fastener passes through the third mounting part and the through hole of the decorative part, and is fastened to the first mounting part.

8. The door body according to claim 6, characterized in that, The mounting bracket is provided with a bracket mounting post, and the door liner is provided with a door liner mounting hole that mates with the bracket mounting post. The third fastener passes through the door liner mounting hole and is fastened to the bracket mounting post.

9. The door body according to claim 1, characterized in that, It also includes a ventilation structure for heat dissipation, the ventilation structure comprising: An air inlet is formed at the bottom of the door liner; An airflow channel is formed between the outer door panel and the pressure plate, and the lower end of the airflow channel is connected to the air inlet; and An air outlet is provided on the upper part of the door liner, and the air outlet is connected to the upper end of the airflow channel.

10. A cooking device, characterized in that, Includes the door body as described in any one of claims 1-9.

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