Housing assembly and home appliance

Abstract

The utility model relates to the technical field of home appliance equipment discloses shell assembly and home appliance equipment, shell assembly, include: cover, bottom plate, set up the lower end at the cover, the side wall of cover is provided with the convex hull structure that protrudes outward, the lower end of convex hull structure extends to the bottom plate, and is connected through the screw between the bottom plate, this application makes the bottom of convex hull structure extend to the bottom plate, makes the convex hull structure and the bottom plate form integrated extension connection, and adopts screw and strengthens fixed, can improve the mechanical property defect of traditional convex hull structure, improves the anti -impact and the anti -deformation ability of convex hull structure, avoids the phenomenon that the root of convex hull structure is easy to appear plastic deformation or micro -crack when shell assembly drops or is impacted by external force, greatly strengthens the overall strength and rigidity of shell assembly, satisfies drop test requirement, effectively solved the problem that the convex hull structure of traditional shell is easy to deform, cracks under the impact load.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, specifically to housing components and home appliances. Background Technology

[0002] Currently, the outer shells of common household appliances such as microwave ovens and dishwashers generally feature raised bulges. These bulges act as distributed reinforcing ribs, significantly improving the shell's strength and thus enhancing its impact and deformation resistance. However, in extreme drop tests, when the shell impacts a hard surface at a specific angle, plastic deformation or micro-cracks may occur at the root of the raised bulge in the stress concentration area, affecting the overall strength and rigidity of the shell. Utility Model Content

[0003] In view of this, the present invention provides a housing component and a household appliance to solve the problem that the housing convex structure in the prior art is prone to deformation, cracking and failure under impact load.

[0004] In a first aspect, this utility model provides a housing assembly, comprising:

[0005] Outer cover;

[0006] The base plate is located at the lower end of the outer cover;

[0007] The outer cover has an outwardly protruding convex structure on its side wall. The lower end of the convex structure extends to the bottom plate and is connected to the bottom plate by screws.

[0008] Beneficial effects: By extending the bottom of the convex hull structure to the base plate, the convex hull structure and the base plate are integrated and connected, and reinforced with screws. This improves the mechanical performance defects of traditional convex hull structures, enhances their impact and deformation resistance, and prevents plastic deformation or micro-cracks from easily occurring at the root of the convex hull structure when the shell assembly is dropped or subjected to external impact. This greatly enhances the overall strength and rigidity of the shell assembly, meets drop test requirements, and effectively solves the problem of deformation, cracking and failure of traditional shell convex hull structures under impact loads.

[0009] In one alternative embodiment, the base plate is provided with an upwardly bent connecting flange in the circumferential direction;

[0010] The lower end of the convex structure extends below the highest point of the connecting flange and is fixed to the connecting flange with screws.

[0011] Beneficial effects: The connecting flange set around the base plate makes it easier to connect the convex structure to the base plate, avoiding problems such as cracking and difficulty in drilling when screws are directly connected to the end face of the base plate.

[0012] In one optional embodiment, the lower end of the outer cover is disposed outside the base plate, and the connecting flange includes:

[0013] The vertical flange is formed by bending and extending vertically upwards from the outer edge of the base plate;

[0014] The horizontal flange is formed by bending and extending from the upper edge of the vertical flange in a direction away from the side wall of the outer cover;

[0015] A screw connection part is provided on the vertical flange, and the lower end of the convex structure abuts against the outer wall of the vertical flange. The screw connects the lower end of the convex structure and the screw connection part in sequence.

[0016] Beneficial effects: The vertical flange design facilitates connection and fixation to the lower end of the convex structure, allowing for an integrated extension connection between the convex structure and the base plate, greatly enhancing the strength and rigidity of the outer cover. The horizontal flange design causes the entire connecting flange to be rolled inward, effectively preventing scratches or damage to the edge of the connecting flange from the outer cover during the assembly of the base plate and the outer cover, or scratches to assembly personnel.

[0017] In one optional embodiment, the lower end of the convex structure is provided with a relief profile and a screw hole at the position corresponding to the screw connection part;

[0018] The screw hole is at least partially located in the relief profile, the screw connects the screw hole and the screw connection portion, and the screw nut is at least partially accommodated in the relief profile.

[0019] Beneficial effects: The designed clearance profile facilitates screw driving. The clearance profile can accommodate at least part of the nut, which can effectively prevent the nut from protruding from the outer wall of the convex structure and easily scratching and damaging other parts.

[0020] In one alternative embodiment, the middle portion of the sidewall of the outer cover protrudes outward to form a convex hull structure;

[0021] The screw holes are located at the junction of the lower end of the convex structure and the side wall.

[0022] Beneficial effects: The convex bulge structure is located in the middle area of ​​the side wall of the outer casing. A predetermined distance is maintained between the outer periphery of the convex bulge structure and the outer edge of the side wall. The entire side wall has an arched structure, which can better distribute stress and prevent deformation and damage caused by drops or compression. Furthermore, by placing the screw holes at the junction of the lower end of the convex bulge structure and the side wall, the screws are connected between the convex bulge structure, the side wall of the outer casing, and the base plate, resulting in better structural reinforcement and fixation.

[0023] In one alternative embodiment, the screw connection is a threaded interface structure, which is located on the side of the vertical flange away from the convex structure.

[0024] Beneficial effects: The screw connection part adopts a threaded interface structure, which is convenient for processing and forming. By placing the threaded interface structure on the side of the vertical flange away from the convex structure, the problem of the threaded interface structure protruding from the outer wall of the vertical flange, which is easy to interfere with the side wall of the outer cover and the convex structure, and is inconvenient for assembly can be effectively avoided.

[0025] In one alternative implementation, the convex hull structure includes:

[0026] Convex hull plane;

[0027] There are four transition ramps, which are connected to the perimeter of the convex hull plane and the sidewalls of the outer cover.

[0028] The transition slope located below the convex hull plane extends to the base plate and is connected to the base plate by screws.

[0029] Beneficial effects: The convex hull structure includes a convex hull plane and a transition slope that is inclined between the outer periphery of the convex hull plane and the side wall of the outer cover. The design of the transition slope allows the lower end of the convex hull structure to gradually extend towards the bottom plate in a tapering manner, and the sides and upper end to gradually connect with the side wall of the outer cover, making the entire convex hull structure arched. This can effectively disperse stress, prevent deformation and damage caused by falling or squeezing, and further improve the structural strength.

[0030] In one optional embodiment, the outer cover includes a first sidewall, a top wall, and a second sidewall connected in sequence, with the first sidewall and the second sidewall disposed opposite to each other on both sides of the top wall;

[0031] The first sidewall, the top wall, and the second sidewall are integrally formed, and at least one of the first sidewall and the second sidewall is provided with a convex bulge structure.

[0032] Beneficial effects: The first sidewall, top wall, and second sidewall are connected in sequence to form a U-shaped outer cover. The first sidewall, top wall, and second sidewall are bent into shape as a whole, which is convenient for processing and manufacturing.

[0033] Secondly, this utility model also provides a household appliance, including the housing assembly of any of the above embodiments.

[0034] In one optional embodiment, the appliance is a microwave cooking device, with a cavity formed within the outer casing assembly, and the appliance further includes:

[0035] The microwave generator is located on one side of the cavity, and the outer cover has a convex structure on at least one side wall close to the microwave generator.

[0036] Beneficial effects: Due to the large weight of the microwave generator, the side wall near the microwave generator is prone to deformation when dropped. Therefore, a convex structure is provided on at least one side wall of the outer casing near the microwave generator, and the bottom of the convex structure extends to the base plate to form a continuous support frame. It is double mechanically fixed with screws, which greatly improves the strength and rigidity of the side wall of the outer casing near the microwave generator and reduces the risk of the heavy microwave generator hitting the side wall of the outer casing and deforming or damaging it when dropped. Attached Figure Description

[0037] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the outer cover in an embodiment of the present utility model;

[0039] Figure 2 for Figure 1 Enlarged view of the structure at point A;

[0040] Figure 3 This is an axial sectional view of the household appliance at the avoidance molding point in an embodiment of this utility model;

[0041] Figure 4 for Figure 3 Enlarged view of the structure at point B;

[0042] Figure 5 for Figure 3 Enlarged view of the structure at point C.

[0043] Explanation of reference numerals in the attached figures:

[0044] 10. Outer cover; 11. First side wall; 12. Top wall; 13. Second side wall; 100. Screw hole; 101. Convex bulge structure; 1011. Convex bulge plane; 1012. Transition slope; 1013. Avoidance pressing; 103. Limiting fold;

[0045] 20. Base plate; 21. Connecting flange; 211. Vertical flange; 212. Horizontal flange; 213. Screw connection part;

[0046] 30. Screws;

[0047] 40. Microwave generator. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0049] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0051] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0052] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0053] According to an embodiment of the present invention, in one aspect, the present invention provides a housing assembly, including an outer cover 10 and a bottom plate 20, the bottom plate 20 being disposed at the lower end of the outer cover 10; the side wall of the outer cover 10 is provided with an outwardly protruding convex structure 101, the lower end of the convex structure 101 extending to the bottom plate 20 and being connected to the bottom plate 20 by screws 30.

[0054] In the above embodiment, by extending the bottom of the convex hull structure 101 to the base plate 20, the convex hull structure 101 and the base plate 20 are integrated and extended, and reinforced by screws 30, which can improve the mechanical performance defects of the traditional convex hull structure 101, improve the impact resistance and deformation resistance of the convex hull structure 101, and avoid the phenomenon that plastic deformation or micro-cracks easily occur at the root of the convex hull structure 101 when the shell assembly is dropped or subjected to external impact. This greatly enhances the overall strength and rigidity of the shell assembly, meets the drop test requirements, and effectively solves the problem that the convex hull structure 101 of the traditional shell is prone to deformation and cracking failure under impact load.

[0055] Specifically, in this embodiment, the convex structure 101 is a stamped structure integrally formed by stamping the side wall of the outer cover 10. The middle area of ​​the side wall of the outer cover 10 protrudes outward to form the convex structure 101. The convex structure 101 acts as a reinforcing rib to increase the structural strength of the outer cover 10. The lower end of the convex structure 101 extends to the position where it overlaps with the base plate 20. Then, screws 30 are used to connect the lower end of the convex structure 101 to the overlapping part of the base plate 20, thereby achieving a double mechanical fixation between the outer cover 10 and the base plate 20.

[0056] In some embodiments, the base plate 20 is provided with an upwardly bent connecting flange 21 in the circumferential direction; the lower end of the convex structure 101 extends to a position below the highest point of the connecting flange 21 and is fixed to the connecting flange 21 by screws 30.

[0057] In the above embodiment, the connecting flange 21 provided in the circumferential direction of the base plate 20 makes it easier to connect the convex structure 101 to the base plate 20, avoiding problems such as the screw 30 being easily cracked and inconvenient to drill holes when directly connected to the end face of the base plate 20.

[0058] Specifically, the base plate 20 is bent upward in the circumferential direction to form a connecting flange 21. The lower end of the convex structure 101 is lower than the highest point of the connecting flange 21, and the lower end of the convex structure 101 abuts against the vertical surface of the connecting flange 21 and is fixed by screws 30.

[0059] In some embodiments, the lower end of the outer cover 10 covers the base plate 20. The connecting flange 21 includes a vertical flange 211 and a horizontal flange 212. The vertical flange 211 is formed by bending and extending vertically upward from the outer peripheral edge of the base plate 20. The horizontal flange 212 is formed by bending and extending from the upper edge of the vertical flange 211 in a direction away from the side wall of the outer cover 10. A screw connection portion 213 is provided on the vertical flange 211. The lower end of the convex structure 101 abuts against the outer wall of the vertical flange 211. The screw 30 connects the lower end of the convex structure 101 and the screw connection portion 213 in sequence.

[0060] In the above embodiments, the vertical flange 211 is designed to facilitate connection and fixation with the lower end of the convex structure 101, enabling the convex structure 101 and the base plate 20 to be integrally extended and connected, greatly enhancing the strength and rigidity of the outer cover 10. The design of the horizontal flange 212 makes the entire connecting flange 21 roll inward, which can effectively prevent the edge of the connecting flange 21 from scratching the outer cover 10 during the assembly of the base plate 20 and the outer cover 10, or from scratching the assembly personnel.

[0061] Specifically, the lower end of the outer cover 10 surrounds the base plate 20. The outer periphery of the base plate 20 bends upward and extends for a set length to form a vertical flange 211, and then continues to bend inward to form a horizontal flange 212. The lower end of the convex structure 101 fits against the outer wall of the vertical flange 211. The screw connection part 213 can adopt a structure with a connection hole opened on the vertical flange 211. The screw 30 passes through the screw hole 100 at the lower end of the convex structure 101 and the connection hole on the vertical flange 211 and is then locked and fixed by a nut; or the screw connection part 213 can also adopt a screw post structure; or the screw connection part 213 can also adopt a structure with an internally threaded interface.

[0062] Furthermore, such as Figures 3 to 5 As shown, the lower end of the outer cover 10 is bent inward to form a limiting flange 103. This limiting flange 103 supports and surrounds the outer periphery of the base plate 20. Through the design of the limiting flange 103, it can not only support the base plate 20 and limit its position, facilitating the assembly of the base plate 20 and the outer cover 10, but also cover the gap between the connecting flange 21 of the base plate 20 and the side wall of the outer cover 10, improving aesthetics and avoiding the problem of exposed screws 30 being prone to rust and corrosion.

[0063] In some embodiments, such as Figures 1 to 4 As shown, the lower end of the convex hull structure 101 is provided with a relief pressure type 1013 and a screw hole 100 at the position corresponding to the screw connection part 213; the screw hole 100 is at least partially located in the relief pressure type 1013, the screw 30 connects the screw hole 100 and the screw connection part 213, and the nut of the screw 30 is at least partially accommodated in the relief pressure type 1013.

[0064] In the above embodiment, the avoidance pressure type 1013 facilitates screwing 30. The avoidance pressure type 1013 can accommodate at least part of the nut, which can effectively prevent the nut from protruding from the outer wall surface of the convex structure 101 and easily causing scratch damage to other components.

[0065] Specifically, a receiving groove is formed inside the relief pressure mold 1013, which can accommodate part of the nut. In some optional embodiments, the relief pressure mold 1013 is formed by the lower end of the convex structure 101 being recessed inward. The bottom of the receiving groove and the side wall of the outer cover 10 are located on the same plane, and the peripheral wall of the receiving groove is crescent-shaped.

[0066] In some embodiments, the middle portion of the sidewall of the outer cover 10 protrudes outward to form a convex structure 101; screw holes 100 are formed at the junction of the lower end of the convex structure 101 and the sidewall.

[0067] In the above embodiment, the convex bulge structure 101 is located in the middle region of the side wall of the outer cover 10. A predetermined distance is reserved between the outer periphery of the convex bulge structure 101 and the outer periphery edge of the side wall. The entire side wall has an arched structure, which can better disperse stress and prevent deformation damage caused by drops or squeezing. In addition, by opening the screw hole 100 at the junction of the lower end of the convex bulge structure 101 and the side wall, the screw 30 is connected between the convex bulge structure 101, the side wall of the outer cover 10, and the base plate 20, resulting in a better structural reinforcement and fixing effect.

[0068] Specifically, the relief pressure type 1013 can accommodate half of the nut, half of the screw hole 100 is located in the relief pressure type 1013, and the other half is located on the side wall of the outer cover 10. The transverse cross section of the relief pressure type 1013 is D-shaped, and the side wall of the relief pressure type 1013 is a crescent-shaped arc wall.

[0069] In some embodiments, the screw connection 213 is a threaded interface structure, which is located on the side of the vertical flange 211 away from the convex structure 101.

[0070] In the above embodiments, the screw connection part 213 adopts a threaded interface structure, which facilitates processing and forming. Furthermore, by setting the threaded interface structure on the side of the vertical flange 211 away from the convex structure 101, the problem of the threaded interface structure protruding from the outer wall of the vertical flange 211, which easily causes interference between the side wall of the outer cover 10 and the convex structure 101 and makes assembly inconvenient can be effectively avoided.

[0071] Specifically, the threaded interface structure has internal threads, and the vertical flange 211 has an opening at the position corresponding to the screw hole 100. The circumferential edge of the opening on the side away from the side wall of the outer cover 10 extends away from the convex structure 101 to form a cylindrical interface structure. The interface structure has internal threads, thus forming a threaded interface structure. The screw 30 extends from the screw hole 100 of the outer cover 10 and is threaded into the threaded interface structure, realizing the integrated extension connection between the convex structure 101 and the base plate 20.

[0072] In some embodiments, the convex hull structure 101 includes a convex hull plane 1011 and a transition slope 1012. There are four transition slopes 1012, which are correspondingly connected between the periphery of the convex hull plane 1011 and the sidewall of the outer cover 10. The transition slope 1012 located below the convex hull plane 1011 extends to the bottom plate 20 and is connected to the bottom plate 20 by screws 30.

[0073] In the above embodiment, the convex hull structure 101 includes a convex hull plane 1011 and a transition slope 1012 inclined between the outer periphery of the convex hull plane 1011 and the side wall of the outer cover 10. The design of the transition slope 1012 enables the lower end of the convex hull structure 101 to gradually extend towards the bottom plate 20 in a tapered manner, and the sides and upper end to connect with the side wall of the outer cover 10 in a tapered manner, so that the entire convex hull structure 101 is arched, which can effectively disperse stress, prevent deformation damage caused by falling or squeezing, and further improve the structural strength.

[0074] Specifically, the convex hull plane 1011 is parallel to the side wall of the outer cover 10, and four transition slopes 1012 are distributed above, below, left, and right of the convex hull plane 1011. The lower end of the transition slope 1012 below the convex hull plane 1011 extends to the base plate 20, and the transition slope 1012 below the convex hull plane 1011 extends to the highest point of the connecting flange 21 below the side of the base plate 20, abutting against the vertical surface of the connecting flange 21. The transition slope 1012 below the convex hull plane 1011 is provided with a relief pressure type 1013, which has screw holes 100 for driving screws 30 into the base plate 20 for reinforcement.

[0075] In some embodiments, such as Figure 1 As shown, the outer cover 10 includes a first side wall 11, a top wall 12, and a second side wall 13 connected in sequence. The first side wall 11 and the second side wall 13 are disposed opposite to each other on both sides of the top wall 12. The first side wall 11, the top wall 12, and the second side wall 13 are integrally formed, and at least one of the first side wall 11 and the second side wall 13 is provided with a convex structure 101.

[0076] In the above embodiment, the first sidewall 11, the top wall 12, and the second sidewall 13 are connected in sequence to form a U-shaped outer cover 10. The first sidewall 11, the top wall 12, and the second sidewall 13 are integrally bent and formed, which is convenient for processing and manufacturing.

[0077] In this embodiment, a heavy electrical component, such as a transformer, is located near the second sidewall 13. If it falls, the second sidewall 13 may easily deform. Therefore, in this embodiment, a convex structure 101 is provided on the second sidewall 13, and a convex structure 101 may be optionally provided on the first sidewall 11.

[0078] In some embodiments, the housing assembly further includes a front plate and a rear plate disposed on the front and rear sides of the outer cover 10, and a cavity is formed within the housing assembly.

[0079] This application addresses the problem that the existing shell convex structure 101 is prone to deformation and cracking during drop tests. It proposes a new design scheme for the convex structure 101. Specifically, through structural topology optimization, the bottom of the traditional convex structure 101 is extended to the base plate 20 to form a continuous support frame, and screws 30 are used for double mechanical fixation. This effectively solves the mechanical reliability defects of the original structure, greatly enhances the strength and rigidity of the shell, and meets the drop test requirements.

[0080] According to an embodiment of the present invention, in another aspect, a household appliance is provided, including a housing assembly of any of the above embodiments.

[0081] In this embodiment, the home appliance includes, but is not limited to, dishwashers, microwave ovens, and steam ovens. Preferably, the home appliance is a microwave cooking device, and more preferably, it is a microwave oven.

[0082] In some specific embodiments, such as Figure 3 , Figure 4 As shown, a cavity is formed inside the outer casing assembly. The household appliance also includes a microwave generator 40, which is located on one side of the cavity. The outer casing 10 has a convex structure 101 on at least one side wall near the microwave generator 40.

[0083] In the above embodiment, since the microwave generator 40 is relatively heavy, it is easy for the side wall near the microwave generator 40 to deform when it falls. Therefore, a convex structure 101 is provided on the side wall of the outer cover 10 at least near the microwave generator 40, and the bottom of the convex structure 101 extends to the base plate 20 to form a continuous support frame. It is double mechanically fixed with screws 30, which greatly improves the strength and rigidity of the side wall of the outer cover 10 near the microwave generator and reduces the risk of the heavy microwave generator hitting the side wall of the outer cover 10 and deforming or damaging it when it falls.

[0084] Specifically, the microwave generator 40 includes a magnetron and a high-voltage transformer. On the other side of the cavity, there is an inner liner with a cooking cavity inside. The microwaves generated by the microwave generator 40 are introduced into the inner liner to heat the food in the cooking cavity. Specifically, the high-frequency microwaves emitted by the magnetron act on the water molecules in the food, and the heat generated by the high-speed movement and friction of the water molecules is used to quickly heat the food.

[0085] Furthermore, combined Figures 1 to 4As shown, the outer cover 10 includes a first side wall 11, a top wall 12, and a second side wall 13 connected in sequence. The first side wall 11 is located near the inner liner, and the second side wall 13 is located near the microwave generator. The first side wall 11 is provided with a convex structure 101, and the convex structure 101 of the first side wall 11 is provided with a plurality of heat dissipation holes. The second side wall 13 is also provided with a convex structure 101, and the lower end of the convex structure 101 on the second side wall 13 extends to the bottom plate 20 and is connected to the bottom plate 20 by screws 30.

[0086] In this application, the design of the convex hull structure 101 helps with electromagnetic shielding, and together with the mesh structure, it controls microwave leakage within a safe range. In addition, the layout of the convex hull structure 101 in the heat dissipation area can increase the heat exchange area and optimize heat dissipation efficiency. Furthermore, the convex hull structure 101 also serves as an assembly positioning function, ensuring precise docking between the outer shell components and the inner liner, and avoiding assembly errors.

[0087] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the protection scope of the embodiments of this application.

Claims

1. A housing assembly, characterized in that, include: Outer cover (10); The base plate (20) is located at the lower end of the outer cover (10); The outer cover (10) has an outwardly protruding convex structure (101) on its side wall. The lower end of the convex structure (101) extends to the base plate (20) and is connected to the base plate (20) by screws (30).

2. The housing assembly according to claim 1, characterized in that, The base plate (20) is provided with an upwardly bent connecting flange (21) in the circumferential direction; The lower end of the convex hull structure (101) extends to a position below the highest point of the connecting flange (21) and is fixed to the connecting flange (21) by the screw (30).

3. The housing assembly according to claim 2, characterized in that, The lower end of the outer cover (10) covers the outside of the base plate (20), and the connecting flange (21) includes: The vertical flange (211) is formed by bending and extending vertically upward from the outer peripheral edge of the base plate (20); The horizontal flange (212) is formed by bending and extending the upper edge of the vertical flange (211) in a direction away from the side wall of the outer cover (10); The vertical flange (211) is provided with a screw connection part (213), the lower end of the convex structure (101) abuts against the outer wall of the vertical flange (211), and the screw (30) connects the lower end of the convex structure (101) and the screw connection part (213) in sequence.

4. The housing assembly according to claim 3, characterized in that, The lower end of the convex hull structure (101) is provided with a relief pressure type (1013) and a screw hole (100) corresponding to the position of the screw connection part (213); The screw hole (100) is at least partially located in the relief pressure type (1013), the screw (30) connects the screw hole (100) and the screw connection portion (213), and the nut of the screw (30) is at least partially accommodated in the relief pressure type (1013).

5. The housing assembly according to claim 4, characterized in that, The middle portion of the sidewall of the outer cover (10) protrudes outward to form the convex hull structure (101); The screw hole (100) is located at the junction of the lower end of the convex structure (101) and the side wall.

6. The housing assembly according to any one of claims 3 to 5, characterized in that, The screw connection part (213) is a threaded interface structure, which is located on the side of the vertical flange (211) away from the convex structure (101).

7. The housing assembly according to any one of claims 1 to 5, characterized in that, The convex hull structure (101) includes: The convex hull plane is (1011). There are four transition slopes (1012), which are connected between the periphery of the convex hull plane (1011) and the side wall of the outer cover (10); The transition slope (1012) located below the convex hull plane (1011) extends to the base plate (20) and is connected to the base plate (20) by screws (30).

8. The housing assembly according to any one of claims 1 to 5, characterized in that, The outer cover (10) includes a first side wall (11), a top wall (12), and a second side wall (13) connected in sequence, with the first side wall (11) and the second side wall (13) arranged opposite to each other on both sides of the top wall (12); The first sidewall (11), the top wall (12), and the second sidewall (13) are integrally formed, and at least one of the first sidewall (11) and the second sidewall (13) is provided with the convex hull structure (101).

9. A household appliance, characterized in that, Includes the housing assembly as described in any one of claims 1 to 8.

10. The household appliance according to claim 9, characterized in that, The appliance is a microwave cooking device, and a cavity is formed within the outer shell assembly. The appliance also includes: A microwave generator (40) is disposed on one side of the cavity, and the outer cover (10) has the convex structure (101) on at least one side wall near the microwave generator (40).

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