A shutter anti-collapse structure and a cooking electrical appliance

Abstract

The utility model provides a kind of shutter anti-collapse structure and cooking appliance, cooking appliance includes door assembly, door assembly at least includes door body, shutter, support assembly is provided on shutter, support assembly includes support rib and support part, the end surface of support rib towards door body is rib position bearing surface, corresponding limit surface is provided on door body, rib position bearing surface and limit surface cooperate abut, support part is connected with support rib, and support part is at least used to increase the contact area of support assembly and limit surface in vertical direction.The utility model is provided with support part on support rib, at least increase the contact area of rib position bearing surface and door body limit surface in vertical direction, so that support assembly can provide corresponding supporting force when shutter is subjected to external force, prevent the offset collapse of shutter under the action of external force and drive sealing ring collapse, ensure the sealing stability, in addition, support assembly can also limit the displacement of shutter in vertical direction, ensure the structural stability of door assembly.

Description

Technical Field

[0001] This utility model relates to the field of cooking appliance technology, and more specifically, to a shield anti-collapse structure and a cooking appliance. Background Technology

[0002] In existing cooking appliances, the sealing mechanism of the door assembly generally consists of the door, a cover plate, and a sealing ring. The sealing ring is installed on the edge of the cover plate and is pressed tightly against the arc surface of the sealing ring installation. It must also be higher than the microwave shielding surface on the door to effectively seal and prevent moisture from escaping. However, since the arc surface of the sealing ring installation is not a right angle, it cannot play a fixing role. When the cover plate is subjected to external force, the sealing ring is prone to deflect and collapse around the arc surface as the axis, causing it to be lower than the microwave shielding surface, resulting in the failure of the seal to prevent moisture from escaping.

[0003] Application number CN202510221975.5 discloses a cooking device including a door assembly. The door assembly includes a door body, a cover plate, and a sealing ring. The sealing ring is connected to the cover plate and forms a seal between the door body and the cover plate. A drain hole is provided in the lower section of the sealing ring, and a drain groove corresponding to the drain hole is provided on the cover plate, with the drain groove located below the drain hole. This cooking device, when condensate flows to the sealing ring, allows it to drain further along the drain hole and drain groove, preventing prolonged accumulation and buildup at the sealing ring. It also prevents prolonged contact between the door body coating and condensate, ensuring a normal operating environment for the coating and effectively extending its lifespan. This avoids premature coating peeling, premature rusting, and microwave leakage caused by cracking of the door body, thus ensuring the overall lifespan of the cooking device and protecting user safety. While this patent allows for timely drainage of condensate through the connection between the cover plate and the sealing ring, and the drain hole on the sealing ring, it cannot prevent the sealing ring from shifting and failing under external force. Utility Model Content

[0004] The present invention aims to provide a structure to prevent the cover from collapsing, thereby preventing the cover from shifting when subjected to external force, which would cause the sealing ring to collapse and lead to water vapor sealing failure.

[0005] This utility model discloses a cover anti-collapse structure for a cooking appliance. The cooking appliance includes a door assembly, which includes at least a door body, a cover, and a sealing ring. The sealing ring is connected to the cover and can form a seal between the door body and the cover. A support assembly is provided on the cover, which includes a support rib and a support portion. The end face of the support rib facing the door body is a rib support surface. A limiting surface is correspondingly provided on the door body. The rib support surface and the limiting surface cooperate to limit the position of the cover in the front-back direction. The support portion is connected to the support rib, and the support portion is at least used to increase the vertical contact area between the support assembly and the limiting surface to prevent the cover from collapsing or shifting under external force.

[0006] Furthermore, the support portion is a rib and / or a flange, the rib and / or flange being disposed on the upper and / or lower side of the support rib, and the end face of the rib and / or flange near the door body being in the same plane as the rib support surface.

[0007] Furthermore, the supporting rib has one or more stiffening plates and / or flanges.

[0008] Furthermore, several support structures are provided near the upper side and the lower side of the cover plate, respectively. The support structures are support ribs or support components, wherein at least one support structure is a support component.

[0009] Furthermore, the support structures near the upper side of the cover plate are all support components, and the support structures near the lower side of the cover plate are all support ribs, or the support structures on the cover plate are all support components.

[0010] Furthermore, when the support assembly is positioned near the upper side of the cover plate, at least one stiffener or flange is positioned below the support stiffener; when the support assembly is positioned near the lower side of the cover plate, at least one stiffener or flange is positioned above the support stiffener.

[0011] Furthermore, the support portion is a stiffening plate, and the stiffening plate and the supporting rib are arranged in a T-shape.

[0012] Furthermore, the support portion and the support rib are integrally formed.

[0013] Furthermore, a cover plate buckle is provided on the cover plate, and a connecting part and a sealing rib are provided on the sealing ring. The connecting part is connected to the cover plate buckle, and the sealing ring is sealed with the sealing surface on the door body. The sealing rib is sealed with the mounting arc surface on the door body.

[0014] This utility model also discloses a cooking appliance, including the anti-collapse structure of the cover as described above.

[0015] The advantages of the cooking appliance and the aforementioned anti-collapse shield structure compared to the prior art are the same, and will not be repeated here.

[0016] Compared with the prior art, the anti-collapse structure of the cover and the cooking appliance described in this utility model have the following advantages:

[0017] By adding support portions to the support ribs, the vertical contact area between the rib support surface and the door limiting surface is increased. This allows the support assembly to provide corresponding support force when the cover is subjected to external forces, preventing the cover from shifting and collapsing under external forces, thus preventing the sealing ring from collapsing and ensuring sealing stability. Furthermore, the support assembly can limit the vertical displacement of the cover, ensuring the structural stability of the door assembly. The cover anti-collapse structure provided by this utility model has a simple structure, low production cost, high production efficiency, and ensures the sealing reliability of the sealing ring. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of a door component in the prior art, in which only supporting ribs are provided on the shield;

[0019] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0020] Figure 3 This is an exploded structural diagram of the door assembly described in an embodiment of the present utility model, wherein a support assembly is provided on the shield, and the support assembly includes a support rib and a support portion;

[0021] Figure 4 for Figure 3 A magnified view of part B in the middle;

[0022] Figure 5 This is an exploded structural diagram of the door assembly described in another embodiment of the present utility model;

[0023] Figure 6 This is a cross-sectional structural diagram of the door assembly when closed according to an embodiment of the present invention;

[0024] Figure 7 for Figure 6 A magnified view of part C in the middle;

[0025] Figure 8 This is a three-dimensional structural diagram of the shield with a support component on the upper side and a support rib on the lower side as described in the embodiment of the present utility model.

[0026] Figure 9 This is a structural diagram of an embodiment of the present invention where support components are provided on both the upper and lower sides.

[0027] Explanation of reference numerals in the attached figures:

[0028] 100. Door frame; 110. Door frame fastener; 120. Door frame support surface; 200. Door body; 210. Microwave shielding surface; 220. Mounting arc surface; 230. Limiting surface; 240. Sealing surface; 300. Sheath; 310. Support rib; 311. Rib support surface; 312. Support part; 320. Sheath fastener; 330. Sheath edge fastener; 400. Sealing ring; 410. Sealing rib; 420. Connecting part. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this utility model. The specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of this utility model can be combined with each other.

[0030] Figure 1 , Figure 2 The diagram shows a structural schematic of a door assembly in the prior art. The door assembly includes at least a door frame 100, a door body 200, a cover plate 300, and a sealing ring 400. The sealing ring 400 is disposed on the cover plate 300 and cooperates with the sealing surface 240 and the mounting arc surface 220 on the door body 200 for sealing. The sealing ring 400 is annular and is disposed on the outer periphery of the microwave shielding surface 210 on the door body 200. A support rib 310 is provided on the cover plate 300. The end face of the support rib 310 facing the door body 200 is a rib support surface 311. A limiting surface 230 is correspondingly provided on the door body 200. The rib support surface 311 and the limiting surface 230 cooperate and abut against each other to limit the position of the cover plate 300 in the front-back direction and prevent it from shifting. At this time, the outer periphery of the cover plate 300 cooperates and abuts against the door frame support surface 120 on the door frame 100. Figure 2 As shown, in the prior art, the support rib 310 is arranged in a straight line and the mounting arc surface 220 is arranged in an arc shape. When the cover plate 300 is subjected to external force, the cover plate 300 is prone to deflection with the mounting arc surface 220 as the axis, the contact position between the rib support surface 311 and the limiting surface 230 as the fulcrum, and the contact position between the outer peripheral end face of the cover plate 300 and the door frame support surface 120 as the origin. This deflection will cause the sealing ring 400 to be squeezed and deformed and collapse and displace, thereby causing the water vapor seal of the door assembly to fail.

[0031] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: a shield anti-collapse structure and a cooking appliance.

[0032] Example 1

[0033] This embodiment provides a shielding anti-collapse structure, such as... Figures 1-9 As shown, a cooking appliance is provided, comprising a door assembly. The door assembly includes at least a door body 200, a cover plate 300, and a sealing ring 400. The sealing ring 400 is connected to the cover plate 300 and forms a seal between the door body 200 and the cover plate 300. A support assembly is provided on the cover plate 300, the support assembly including a support rib 310 and a support portion 312. The end face of the support rib 310 facing the door body 200 is a rib support surface 311. Correspondingly provided on the door body 200 are... The limiting surface 230, the rib support surface 311 and the limiting surface 230 are engaged and abutted to limit the position of the shield 300 in the front-back direction. The support part 312 is connected to the support rib 310, and the support part 312 is at least used to increase the vertical contact area between the support assembly and the limiting surface 230 to prevent the shield 300 from collapsing and shifting under the action of external force, so as to avoid the sealing ring 400 from collapsing and shifting below the microwave shielding surface 210 under the action of the shield 300, which would lead to the failure of the water vapor seal.

[0034] It should be noted that the front-back direction refers to the conventional front-back direction of cooking appliances, that is, the side where the door assembly is located is the front, and the corresponding side is the back. The vertical direction refers to the conventional up-down direction of cooking appliances, and in this application, the vertical direction refers to the up-down direction when the door assembly is in the closed state. Through the above arrangement, when the support rib 310 is in contact with the limiting surface 230, the contact area between the support assembly and the limiting surface 230 in the vertical direction can be increased at least. This prevents the support rib 310 from being too thin and having a small vertical contact area, which could easily become a deflection fulcrum under external force. This effectively prevents the sealing ring 400 from failing due to the collapse and displacement of the cover 300.

[0035] As one example, such as Figure 3 , Figure 4 , Figure 8 , Figure 9As shown, the support portion 312 is a rib plate, which is disposed on the upper and / or lower side of the support rib 310. The extending direction of the rib plate is the same as that of the support rib 310, and the end face of the rib plate near the door body 200 is in the same plane as the rib support surface 311. Preferably, the thickness of the rib plate is close to the thickness of the support rib 310, or the thickness of the rib plate is equal to the thickness of the support rib 310. It should be understood that thickening the plate of the support rib 310 can also prevent the baffle 300 from collapsing or deflecting. However, thickening the support rib 310 will cause a significant difference in thickness between it and other parts of the baffle 300. Since the baffle 300 is usually a plastic structure, different plate thicknesses have different cooling times and shrinkage rates during manufacturing. This can easily lead to a difference in shrinkage between the thin plate on the back of the support rib 310 and other parts, resulting in inconsistent shrinkage of the surface and affecting the product molding effect. In addition, the different shrinkage rates can also easily cause the support rib 310 to deform, affecting its fit with the limiting surface 230. In this example, by setting the support part 312 as a rib, the inconsistent thickness of the parts can be effectively prevented, facilitating stable product molding.

[0036] Specifically, each support rib 310 has one or more stiffening plates. It should be noted that this refers to each support rib 310 having one or more corresponding stiffening plates. The stiffening plates can be arranged perpendicularly to or at an angle to the support rib 310, as long as they increase the vertical contact area between the support assembly and the limiting surface 230. One or more stiffening plates can be located on the same side of the support rib 310 in the vertical direction, or they can be located on opposite sides.

[0037] As one optional example, the support rib 310 has a rib plate, which is arranged in a T-shape with the support rib 310. Figure 4 As shown, the stiffener plate is arranged perpendicularly to the support rib 310, and the stiffener plate is located in the middle of the support rib 310 so that the support rib 310 is subjected to balanced forces.

[0038] As another optional example, the support portion 312 is a flange, which is disposed on the upper and / or lower side of the support rib 310, and the flange is disposed at the end of the support rib 310 near the door body 200. The surface of the flange near the door body 200 is on the same plane as the rib support surface 311. The flange can also increase the vertical contact area between the support component and the limiting surface 230 without increasing the thickness of the support rib 310, effectively ensuring the forming effect of the structure, and also preventing the cover plate 300 from collapsing or shifting, thus ensuring the sealing effect of water vapor.

[0039] Specifically, the support rib 310 has one or more flanges. It should be noted that this refers to each support rib 310 having one or more corresponding flanges. These flanges can be located on the same vertical side of the support rib 310, or they can be located on opposite sides.

[0040] As another alternative example, the support portion 312 includes at least one stiffener and at least one flange, the stiffener and flange being disposed on the same side or different sides of the support rib 310 in the vertical direction.

[0041] Specifically, when the support assembly is positioned near the upper side of the cover plate 300, the support portion 312 is positioned below the support rib 310; conversely, when the support assembly is positioned near the lower side of the cover plate 300, the support portion 312 is positioned above the support rib 310. It should be understood that positioning the support portion 312 above the support rib 310 when the support assembly is positioned near the upper side of the cover plate 300, or vice versa, provides relatively poor protection against the cover plate 300 deflecting and collapsing with the contact point between the support rib 310 and the limiting surface 230 as a fulcrum. By defining the positions of the support portion 312 and the support rib 310, the ability of the support portion 312 to prevent the cover plate 300 from deflecting under stress is effectively improved, thereby ensuring the positional stability of the cover plate 300 and enhancing the sealing effect of the door assembly.

[0042] Specifically, several support structures are provided near the upper side and the lower side of the cover plate 300, respectively. These support structures are support ribs 310 or support components, with at least one support structure being a support component. The support components prevent the cover plate 300 from collapsing or shifting, and also prevent it from moving vertically, effectively improving the stability of the cover plate 300 and ensuring the sealing effect of the sealing ring 400.

[0043] As one of the optional examples, such as Figure 8 The supporting structures near the upper side of the cover 300 are all supporting components, and the supporting structures near the lower side of the cover 300 are all supporting ribs 310. It should be understood that the external force on the cover 300 is usually located near the upper side. Therefore, setting all the positions near the upper side as supporting components can effectively prevent the cover 300 from collapsing, thereby ensuring the sealing effect of the door assembly.

[0044] As another optional example, such as Figure 9 As shown, the support structures on the cover 300 are all support components. This design can effectively prevent the cover 300 from shifting after being subjected to force on the upper or lower side, thereby better ensuring the sealing effect of the door 200.

[0045] In this specific example, such as Figure 9 As shown, when the rib plate (support part 312) and the support rib 310 are arranged in a T-shape, the support part 312 in the support assembly near the upper side of the cover plate 300 is located below the support rib 310, and the support part 312 in the support assembly near the lower side of the cover plate 300 is located above the support rib 310. This arrangement can effectively improve the anti-deflection effect of the support part 312 on the cover plate 300, thereby ensuring the moisture sealing effect of the door assembly.

[0046] As a preferred example, the support portion 312 and the support rib 310 are integrally formed. More preferably, the support portion 312, the support rib 310, and the cover plate 300 are integrally formed, which can effectively reduce the number of parts and simplify the production process.

[0047] Specifically, a cover edge 330 is provided on the cover plate 300, and a connecting part 420 and a sealing rib 410 are provided on the sealing ring 400. The connecting part 420 is connected to the cover edge 330, and the sealing ring 400 is sealed with the sealing surface 240 on the door body 200. The sealing rib 410 is sealed with the mounting arc surface 220 on the door body 200. Figure 7 As shown, the cover plate buckle 330 is arranged in an almost "I" shape. The connecting part 420 is fitted onto the cover plate buckle 330. The connecting part 420 has a raised rib on the side near the sealing surface 240. The raised rib is squeezed and deformed during assembly, thereby forming a seal between the sealing ring 400 and the sealing surface 240. It can be seen that the cover plate 300 and the door body 200 have a flexible contact formed by the sealing ring 400 in the vertical direction. In addition, with the setting of the mounting arc surface 220, if the support part 312 is not provided, when the cover plate 300 is subjected to external force, the cover plate 300 is easy to squeeze and deform the sealing ring 400. This causes it to deflect with the mounting arc surface 220 as the axis, the contact point between the support rib 310 and the limiting surface 230 as the fulcrum, and the contact point between the outer peripheral end face of the cover plate 300 and the door frame support surface 120 as the origin. This deflection will cause the sealing ring 400 to be squeezed and deformed and collapse and displace, thereby causing the moisture seal of the door assembly to fail. In this example, the support part 312 can form a limiting support between the cover 300 and the door 200, thereby effectively preventing the cover 300 from deflecting and further avoiding the sealing failure of the sealing ring 400 caused by the collapse of the cover 300.

[0048] Preferably, the door assembly further includes a door frame 100, and the door body 200 is disposed between the door frame 100 and the cover plate 300. A plurality of door frame fasteners 110 are provided on the door frame 100, and a plurality of cover plate fasteners 320 are correspondingly provided on the cover plate 300. The door frame fasteners 110 and the cover plate fasteners 320 are connected in a mating manner. The door assembly can be assembled by the mating connection of the door frame fasteners 110 and the cover plate fasteners 320, making the connection simple and convenient. When the door frame fasteners 110 and the cover plate fasteners 320 are connected, the outer peripheral end face of the cover plate 300 abuts against the door frame support surface 120.

[0049] Specifically, during assembly, the connecting part 420 of the sealing ring 400 is first connected to the cover edge 330 on the cover plate 300 to form a cover plate assembly. The cover plate fastener 320 on the cover plate assembly is then aligned and installed with the door frame fastener 110 on the door frame 100. At this time, the door frame support surface 120 provides corresponding support for the outer peripheral end face of the cover plate 300 to limit the displacement of the outer peripheral end face in the front-back direction. At this time, the sealing rib 410 of the sealing ring 400 on the cover plate assembly is tightly attached to the sealing surface 240 and the mounting arc surface 220 on the door body 200 to form a seal, providing support. The rib support surface 311 and the end face of the support part 312 near the door body 200 in the component are also in close contact with the limiting surface 230 on the door body 200, thereby limiting the displacement of the sealing ring 400 on the baffle assembly along the sealing surface 240 in the front-back direction. At the same time, it can also limit the baffle 300 from deflecting with the mounting arc surface 220 as the axis, with the contact position between the rib support surface 311 and the limiting surface 230 as the fulcrum, and with the contact position between the outer peripheral end face of the baffle 300 and the door frame support surface 120 as the origin, thereby preventing the sealing ring from collapsing and causing the sealing moisture to fail.

[0050] Example 2

[0051] This embodiment discloses a cooking appliance, which includes a shield anti-collapse structure as described in Embodiment 1.

[0052] The advantages of the cooking appliance and the anti-collapse structure of the cover described in Example 1 compared to the prior art are the same, and will not be repeated here.

[0053] It should be understood that the cooking appliances mentioned are common cooking appliances such as microwave ovens, ovens, and steam ovens, and are equipped with the conventional components that they should have, which will not be further limited or described here.

[0054] It should be noted that all directional and positional terms used in this utility model, such as "up," "down," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," "top," "lower," "tail end," "head end," and "center," are only used to explain the relative positional relationship and connection between components in a specific state. They are merely for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated.

[0055] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A cover anti-collapse structure for a cooking appliance, the cooking appliance comprising a door assembly, the door assembly comprising at least a door body (200), a cover (300), and a sealing ring (400), the sealing ring (400) being connected to the cover (300) and capable of forming a seal between the door body (200) and the cover (300), characterized in that, A support assembly is provided on the cover plate (300). The support assembly includes a support rib (310) and a support part (312). The end face of the support rib (310) facing the door body (200) is a rib support surface (311). A limiting surface (230) is correspondingly provided on the door body (200). The rib support surface (311) and the limiting surface (230) cooperate to abut against each other to limit the position of the cover plate (300) in the front-back direction. The support part (312) is connected to the support rib (310), and the support part (312) is at least used to increase the contact area between the support assembly and the limiting surface (230) in the vertical direction to prevent the cover plate (300) from collapsing or shifting under the action of external force.

2. The anti-collapse structure of the shield as described in claim 1, characterized in that, The support part (312) is a stiffener and / or a flange, which is provided on the upper and / or lower side of the support rib (310). The end face of the stiffener and / or flange near the door body (200) is in the same plane as the rib support surface (311).

3. The anti-collapse structure of the shield as described in claim 2, characterized in that, There is one or more stiffeners and / or flanges on the support rib (310).

4. The anti-collapse structure of the shield as described in claim 2 or 3, characterized in that, Several support structures are provided at positions near the upper side of the cover plate (300) and near the lower side of the cover plate (300), respectively. The support structures are support ribs (310) or support components, wherein at least one support structure is a support component.

5. The anti-collapse structure of the shield as described in claim 4, characterized in that, The support structures near the upper side of the cover plate (300) are all support components, and the support structures near the lower side of the cover plate (300) are all support ribs (310), or the support structures on the cover plate (300) are all support components.

6. The anti-collapse structure of the shield as described in claim 5, characterized in that, When the support assembly is positioned near the upper side of the cover plate (300), at least one stiffener or flange is positioned on the lower side of the support rib (310), and when the support assembly is positioned near the lower side of the cover plate (300), at least one stiffener or flange is positioned on the upper side of the support rib (310).

7. The anti-collapse structure for the shield as described in any one of claims 2, 3, 5, and 6, characterized in that, The support part (312) is a stiffening plate, and the stiffening plate and the supporting rib (310) are arranged in a T-shape.

8. The anti-collapse structure of the shield as described in claim 1, characterized in that, The support part (312) and the support rib (310) are integrally formed.

9. The anti-collapse structure of the shield as described in claim 1, characterized in that, A cover edge (330) is provided on the cover plate (300), and a connecting part (420) and a sealing rib (410) are provided on the sealing ring (400). The connecting part (420) is connected to the cover edge (330), and the sealing ring (400) is sealed with the sealing surface (240) on the door body (200). The sealing rib (410) is sealed with the mounting arc surface (220) on the door body (200).

10. A cooking appliance, characterized in that, Includes the shielding anti-collapse structure as described in any one of claims 1-9.

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