Upper hinge structure for preventing a housing from sinking and cooking electric appliance

Abstract

The utility model provides a prevent upper hinge structure and cooking electrical apparatus of shell to sink, and cooking electrical apparatus includes casing, cooking cavity, front plate and door body subassembly, and door body subassembly is rotatably arranged in the cooking electrical appliance front side through upper hinge, and upper hinge includes fixed part and hinged part, and fixed part is connected with front plate and cavity roof fixedly, and hinged part is rotatably connected with door body subassembly, is equipped with support structure on fixed part, and support structure extends to the direction of the top cover of casing, is used for providing the limit support to the top cover to prevent the top cover from sinking and the door frame of door body subassembly from interfering. The utility model discloses through the setting of support structure, plays the role of support limit to the top cover, can effectively prevent the top cover from sinking, avoids forming the local appearance bad of cooking electrical appliance, also prevents the top cover from sinking and the door frame from interfering, avoids the problem that door body subassembly cannot open or the abnormal sound of door body subassembly opening and closing, guarantees the use experience of user.

Description

Technical Field

[0001] This utility model relates to the field of cooking appliance technology, and more specifically, to an upper hinge structure and a cooking appliance that prevents the outer casing from sinking. Background Technology

[0002] Existing side-sliding door cooking appliances have a problem where the left side of the outer casing is suspended relative to the upper hinge, making it prone to sinking. This can cause the outer casing to press against the door frame, resulting in scratches on the door frame, abnormal noises when opening the door, and even the inability to open the door, leading to a poor user experience.

[0003] Chinese patent CN202021482736.4 discloses a door hinge assembly and a microwave oven, which is installed on the microwave oven. The door hinge assembly is fixed to the upper top plate or lower bottom plate via a snap-fit ​​part, and the hinge part is rotatably connected to the door. One side of the fixing part is fixedly connected to the front panel, and the other side is fixed to the upper top plate or lower bottom plate with screws. This patent uses both snap-fit ​​and screw fixing methods to improve the connection stability between the door hinge assembly and the upper top plate or lower bottom plate. It also increases the contact area with the upper top plate and lower bottom plate, which helps to distribute the weight of the door onto the upper top plate and lower bottom plate. This allows the door to be stably fixed to the microwave oven and prevents the door hinge assembly from bending or deforming. The structure of the door hinge assembly in this patent can effectively prevent it from bending and deforming. However, at the upper hinge installation position, there is a certain gap between the top cover of the housing and the front panel. When the door frame on the door assembly is closed, it can enter the gap, causing the top cover to be suspended in this position. Under long-term use, the top cover is prone to concave deformation, resulting in a lower gap height. This causes interference between the door assembly and the top cover when the door assembly is closed, making it difficult to open or close the door assembly. It also makes the door frame easy to scratch and easily produces abnormal noise when opening and closing the door, seriously affecting the user experience. Utility Model Content

[0004] The present invention aims to provide an upper hinge structure that prevents the outer shell from sinking, thereby providing sufficient clearance between the door frame and the top cover and improving the user experience.

[0005] This utility model discloses an upper hinge structure to prevent the outer shell from sinking, used in a cooking appliance. The cooking appliance includes a shell, a cooking cavity, a front panel, and a door assembly. The door assembly is rotatably mounted on the front side of the cooking appliance via an upper hinge. The upper hinge includes a fixed part and a hinged part. The first end of the fixed part is fixedly connected to the front panel, and the other end is fixedly connected to the top plate of the cooking cavity. The hinged part is rotatably connected to the door assembly. A support structure is provided on the fixed part, and the support structure extends towards the top cover of the shell to provide limiting support for the top cover, so as to prevent the top cover from sinking and interfering with the door frame of the door assembly.

[0006] Furthermore, let d1 be the distance between the lower surface of the top cover and the upper surface of the supporting structure, and d2 be the distance between the lower surface of the top cover and the upper surface of the door frame when the door assembly is closed. Then d2>d1≥0.

[0007] Furthermore, the support structure includes a flange extending toward the top cover, and / or the support structure includes a boss protruding toward the top cover.

[0008] Furthermore, at least one of the flanges and / or bosses is integrally formed with the fixing part.

[0009] Furthermore, the fixing part includes a first fixing part, a first connecting part, and a second fixing part. The first fixing part is fixedly connected to the front plate, the second fixing part is fixedly connected to the top plate of the cavity, and the two ends of the first connecting part are respectively connected to the first fixing part and the second fixing part.

[0010] Furthermore, the support structure is disposed on the first fixing part.

[0011] Furthermore, the first end of the hinge is connected to the first fixing part, and the second end is rotatably connected to the door assembly. A notch is formed between the second end of the hinge and the first fixing part, and the support structure is disposed close to the notch.

[0012] Furthermore, a reinforcing part is provided between the first fixing part and the hinge part.

[0013] Furthermore, the second fixing part includes a first clamping plate, a second connecting part, and a second clamping plate. The first clamping plate is connected to the first connecting part, and the first clamping plate is connected to the second clamping plate through the second connecting part. The second connecting part gradually extends downward at an angle from one end near the first clamping plate to one end near the second clamping plate, forming a misaligned clamping groove between the first clamping plate and the second clamping plate. The misaligned clamping groove cooperates with the top plate of the cavity for clamping. A second fixing hole is provided on the first clamping plate and / or the second clamping plate, and the first clamping plate and / or the second clamping plate are fixedly connected to the top plate of the cavity through the second fixing hole.

[0014] This utility model also discloses a cooking appliance, including the upper hinge structure described above to prevent the outer casing from sinking.

[0015] The cooking appliance described above has the same advantages over the prior art as the aforementioned upper hinge structure, and will not be repeated here.

[0016] Compared with the prior art, the upper hinge structure for preventing the outer shell from sinking and the cooking appliance described in this utility model have the following advantages: The upper hinge's support structure effectively supports and limits the top cover, preventing it from sagging and creating unsightly areas on the cooking appliance. It also prevents interference between the sagging top cover and the door frame, avoiding issues like the door assembly failing to open or making abnormal noises during opening and closing, thus ensuring a superior user experience. The upper hinge structure provided by this invention is simple, has low production costs, high production efficiency, and guarantees the reliability of the door assembly's opening and closing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the installation position of the upper hinge structure described in this embodiment of the invention in a cooking appliance; Figure 2 This is a three-dimensional structural diagram of the upper hinge structure described in this embodiment of the invention, installed in a cooking appliance. Figure 3 for Figure 2 A magnified view of part A in the middle; Figure 4 This is a side view of the upper hinge structure described in this embodiment of the invention being installed in a cooking appliance; Figure 5 for Figure 4 A magnified view of part B in the middle; Figure 6 This is a three-dimensional structural diagram of the support structure described in this embodiment of the present invention when it is a flanged structure; Figure 7 This is a three-dimensional structural diagram of the support structure described in this embodiment of the present invention at another angle when the flange is turned up; Figure 8 This is a three-dimensional structural diagram of the support structure in an embodiment of the present invention when it is a boss; Figure 9 This is a three-dimensional structural diagram of the support structure as a boss in an embodiment of the present invention, taken from another angle.

[0018] Explanation of reference numerals in the attached figures: 100. Shell; 110. Top cover; 200. Door assembly; 210. Door frame; 300. Cavity top plate; 400. Upper hinge; 410. First fixing part; 411. Reinforcing part; 412. First fixing hole; 420. Support structure; 430. Hinge part; 440. First connecting part; 450. Second fixing part; 451. First clamping plate; 452. Second connecting part; 453. Second clamping plate; 500. Front plate; 510. Folded edge. Detailed Implementation

[0019] 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 present utility model can be combined with each other.

[0020] The following describes in detail, with reference to the accompanying drawings, an upper hinge structure for preventing the outer shell from sinking and a cooking appliance according to an embodiment of the present invention. Example 1

[0021] This embodiment provides an upper hinge structure to prevent the outer shell from sagging, such as Figures 1-9 As shown, a cooking appliance is used, comprising a housing 100, a cooking cavity, a front panel 500, and a door assembly 200. The door assembly 200 is rotatably mounted on the front side of the cooking appliance via an upper hinge 400. The upper hinge 400 includes a fixed part and a hinge part 430. The first end of the fixed part is fixedly connected to the front panel 500, and the other end is fixedly connected to the top plate 300 of the cooking cavity. The hinge part 430 is rotatably connected to the door assembly 200. A support structure 420 is provided on the fixed part, extending towards the top cover 110 of the housing 100 to provide limiting support for the top cover 110, so as to prevent the top cover 110 from sinking and interfering with the door frame 210 of the door assembly 200.

[0022] Specifically, the upper hinge 400 is located on one side of the cooking cavity near the top cover 110. It should be understood that a lower hinge corresponding to the upper hinge 400 is also provided on the cooking appliance, located on the lower side of the same side of the cooking cavity. The upper hinge 400 and the lower hinge cooperate to fix the door assembly 200 to the front side of the cooking appliance, allowing it to open or close from the side with the hinge member on the hinge part 430 as the axis. When the door assembly 200 is closed, its door frame 210 at least partially extends into the space between the top cover 110 and the front panel 500. Because the top cover 110 lacks support at this position, it is prone to sinking, affecting the appearance and easily interfering with the door frame 210. This makes opening and closing the door assembly 200 difficult, produces abnormal noises during opening and closing, and easily scratches the door frame 210, seriously affecting the user experience. In this example, the support structure 420 is used to provide corresponding limiting support for the top cover 110 to prevent it from interfering with the door frame 210 after it sinks, thereby ensuring the normal opening and closing of the door assembly 200. This effectively avoids problems such as difficulty in opening and closing the door assembly 200, abnormal noise, and easy scratching, thus improving the user experience. The limiting support means that when the top cover 110 is not deformed, the top of the support structure 420 is in contact with or not in contact with the top cover 110. When the top cover 110 sinks and deforms, the limiting support limits the amount of sinking of the top cover 110 to prevent it from interfering with the door frame 210.

[0023] Optionally, the fixing part includes a first fixing part 410, a first connecting part 440, and a second fixing part 450. The first fixing part 410 is fixedly connected to the front plate 500, and the second fixing part 450 is fixedly connected to the cavity top plate 300. Both ends of the first connecting part 440 are connected to the first fixing part 410 and the second fixing part 450, respectively. The arrangement of the first fixing part 410 and the second fixing part 450 achieves the connection between the upper hinge 400 and the front plate 500 and the cavity top plate 300, significantly improving its connection stability. Specifically, one end of the first fixing part 410 is connected to the hinge part 430, and the other end is connected to the first connecting part 440. The first connecting part 440 is arranged in a nearly vertical state and extends downward from the end near the first fixing part 410 to the end near the second fixing part 450. Optionally, the end of the first fixing part 410 near the hinge part 430 extends forward in a horizontal direction to form the hinge part 430.

[0024] Specifically, a flange 510 extending away from the door assembly 200 is provided on the front panel 500, and the first fixing part 410 is fixedly connected to the flange 510. Specifically, the vertical height of the flange 510 is higher than the height of the cavity top plate 300. In this case, the first connecting part 440 enables the upper hinge 400 to be connected to both the front panel 500 and the cavity top plate 300, improving the connection stability and load-bearing capacity of the upper hinge 400. Optionally, the first fixing part 410 is provided with a first fixing hole 412, and a corresponding fixing hole is provided on the flange 510. The first fixing part 410 is screwed to the flange 510 through the first fixing hole 412. Preferably, as... Figures 6-9 As shown, the first fixing hole 412 is an oblong hole. This design can reduce the alignment time during assembly and significantly improve the installation efficiency of the upper hinge 400.

[0025] Preferably, the support structure 420 is disposed on the first fixing part 410. It should be understood that the support structure 420 may also be disposed on the second fixing part 450. Correspondingly, the first fixing part 410 is closer to the top cover 110 than the second fixing part 450. Therefore, disposing of the support structure 420 on the first fixing part 410 can reduce the vertical dimension of the support structure 420, save production costs, and also obtain higher support strength.

[0026] As one of the optional examples, such as Figure 6 , Figure 7 As shown, the support structure 420 includes a flange extending toward the top cover 110. There is one or more flanges.

[0027] As another optional example, such as Figure 8 , Figure 9 As shown, the support structure 420 includes a boss protruding towards the top cover 110. There is one or more of these bosses. As another alternative example, the support structure 420 includes a flange extending toward the top cover 110 and a boss protruding toward the top cover 110. There is one or more of each flange and boss.

[0028] Preferably, at least one of the flange and / or boss is integrally formed with the first fixing part 410. Specifically, when only a flange is provided, at least one flange is integrally formed with the first fixing part 410; when only a boss is provided, at least one boss is integrally formed with the first fixing part 410; when both a flange and a boss are provided, at least one of the flange and the boss is integrally formed with the first fixing part 410. With the above configuration, a stamping or folding process can be added to the existing upper hinge 400, simplifying the production process and reducing production costs.

[0029] Specifically, the first end of the hinge portion 430 is connected to the first fixing portion 410, and the second end is rotatably connected to the door assembly 200. A notch is formed between the second end of the hinge portion 430 and the first fixing portion 410, and the support structure 420 is disposed near the notch. The notch provides clearance for the hinge rotation of the door assembly 200. With this configuration, the support structure 420 can be formed using the portion of material that needs to be removed when forming the notch, significantly simplifying the manufacturing process and reducing production costs.

[0030] Preferably, a reinforcing portion 411 is provided between the first fixing portion 410 and the hinge portion 430. It should be understood that the notch causes the hinge portion 430 to form a relatively elongated structure, severely affecting its structural strength. The reinforcing portion 411 extends from the first fixing portion 410 and the hinge portion 430, effectively improving the structural strength of the hinge portion 430 and ensuring that the upper hinge 400 can provide sufficient support. Preferably, the reinforcing portion 411 is an upward-facing rib or a downward-facing groove. More preferably, the reinforcing portion 411, the first fixing portion 410, and the hinge portion 430 are integrally formed, which can improve structural strength while reducing production costs.

[0031] Specifically, such as Figure 5 As shown, the distance between the lower surface of the top cover 110 and the upper surface of the support structure 420 is denoted as d1, and the distance between the lower surface of the top cover 110 and the upper surface of the door frame 210 when the door assembly 200 is closed is denoted as d2. Therefore, d2 > d1 ≥ 0. Through this setting, the distance between the lower surface of the top cover 110 and the upper surface of the support structure 420 is less than the distance between the upper surface of the door frame 210 and the lower surface of the top cover 110. Thus, when the top cover 110 deforms, it first abuts against the support structure 420 and is limited. Under these conditions, the door assembly 200 can open or close smoothly without interfering with the top cover 110. This avoids problems such as the door assembly 200 being difficult to open or close, making abnormal noises, or the door frame 210 being scratched due to the top cover 110 pressing down on it, ensuring a better user experience. As an example, d2 is 0.9 mm, and d1 < 0.9 mm.

[0032] As one of the better examples, such as Figure 6 , Figure 8 , Figure 9As shown, the second fixing part 450 includes a first clamping plate 451, a second connecting part 452, and a second clamping plate 453. The first clamping plate 451 is connected to the first connecting part 440, and the first clamping plate 451 is connected to the second clamping plate 453 through the second connecting part 452. The second connecting part 452 gradually extends downwards at an angle from one end near the first clamping plate 451 to one end near the second clamping plate 453, forming a misaligned clamping groove between the first clamping plate 451 and the second clamping plate 453. The misaligned clamping groove cooperates with the cavity top plate 300 for clamping. A second fixing hole is provided on the first clamping plate 451 and / or the second clamping plate 453, and the first clamping plate 451 and / or the second clamping plate 453 are fixedly connected to the cavity top plate 300 through the second fixing hole. With the above arrangement, the upper hinge 400 can be quickly clamped with the cavity top plate 300, which facilitates the improvement of the assembly efficiency of the upper hinge 400. Preferably, a positioning element (not shown in the figure) is formed on the top plate 300 of the cavity to cooperate with and position the first clamping plate 451 and / or the second clamping plate 453. After the positioning is completed, the second fixing hole can automatically align with the fixing hole on the top plate 300 of the cavity, thereby further improving the assembly efficiency of the upper hinge 400.

[0033] It should be understood that the door assembly 200 is provided with a structure for rotatably hinged to the hinge part 430, and the specific details can be found in the prior art, which will not be elaborated here. Example 2

[0034] This embodiment discloses a cooking appliance, which includes an upper hinge structure as described in Embodiment 1 to prevent the outer casing from sinking.

[0035] The advantages of the cooking appliance and the upper hinge structure for preventing the outer shell from sinking described in Example 1 compared to the prior art are the same, and will not be repeated here.

[0036] 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.

[0037] 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.

[0038] 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. An upper hinge structure for preventing the outer casing from sinking, used in a cooking appliance, the cooking appliance comprising a housing (100), a cooking cavity, a front panel (500), and a door assembly (200), the door assembly (200) being rotatably disposed on the front side of the cooking appliance via an upper hinge (400), the upper hinge (400) comprising a fixed portion and a hinge portion (430), a first end of the fixed portion being fixedly connected to the front panel (500), and the other end being fixedly connected to the top plate (300) of the cooking cavity, the hinge portion (430) being rotatably connected to the door assembly (200), characterized in that, A support structure (420) is provided on the fixing part. The support structure (420) extends toward the top cover (110) of the housing (100) to provide limiting support for the top cover (110) to prevent the top cover (110) from sinking and interfering with the door frame (210) of the door assembly (200).

2. The upper hinge structure for preventing the outer shell from sagging as described in claim 1, characterized in that, Let d1 be the distance between the lower surface of the top cover (110) and the upper surface of the support structure (420). When the door assembly (200) is closed, let d2 be the distance between the lower surface of the top cover (110) and the upper surface of the door frame (210). Then d2 > d1 ≥ 0.

3. The upper hinge structure for preventing the outer shell from sagging as described in claim 1 or 2, characterized in that, The support structure (420) includes a flange extending toward the top cover (110), and / or the support structure (420) includes a boss protruding toward the top cover (110).

4. The upper hinge structure for preventing the outer shell from sagging as described in claim 3, characterized in that, At least one of the flanges and / or bosses is integrally formed with the fixing part.

5. The upper hinge structure for preventing the outer shell from sagging as described in claim 1, characterized in that, The fixing part includes a first fixing part (410), a first connecting part (440), and a second fixing part (450). The first fixing part (410) is fixedly connected to the front plate (500), and the second fixing part (450) is fixedly connected to the top plate (300) of the cavity. The two ends of the first connecting part (440) are respectively connected to the first fixing part (410) and the second fixing part (450).

6. The upper hinge structure for preventing the outer shell from sagging as described in claim 5, characterized in that, The support structure (420) is disposed on the first fixing part (410).

7. The upper hinge structure for preventing the outer shell from sagging as described in claim 5, characterized in that, The first end of the hinge (430) is connected to the first fixing part (410), and the second end is rotatably connected to the door assembly (200). A notch is formed between the second end of the hinge (430) and the first fixing part (410), and the support structure (420) is located close to the notch.

8. The upper hinge structure for preventing the outer shell from sagging as described in claim 5, characterized in that, A reinforcing part (411) is provided between the first fixing part (410) and the hinge part (430).

9. The upper hinge structure for preventing the outer casing from sagging as described in any one of claims 5-8, characterized in that, The second fixing part (450) includes a first clamping plate (451), a second connecting part (452), and a second clamping plate (453). The first clamping plate (451) is connected to the first connecting part (440), and the first clamping plate (451) is connected to the second clamping plate (453) through the second connecting part (452). The second connecting part (452) extends downward gradually from one end near the first clamping plate (451) to one end near the second clamping plate (453), forming a misaligned clamping groove between the first clamping plate (451) and the second clamping plate (453). The misaligned clamping groove cooperates with the cavity top plate (300) for clamping. A second fixing hole is provided on the first clamping plate (451) and / or the second clamping plate (453), and the first clamping plate (451) and / or the second clamping plate (453) are fixedly connected to the cavity top plate (300) through the second fixing hole.

10. A cooking appliance, characterized in that, Includes an upper hinge structure for preventing the outer casing from sinking, as described in any one of claims 1-9.

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