Oven

By introducing an oven lid angle locking mechanism into the oven, the problem of needing to hold the lid when it is not fully open is solved, and convenient operation of the oven lid is achieved at any angle.

CN223529308UActive Publication Date: 2025-11-11GUANGDONG VANWARD ELECTRIC
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Patent Information

Application Number
CN202422957761.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-11-11
Estimated Expiration
2034-12-02

AI Technical Summary

Technical Problem

Existing ovens with lids require the user to hold the lid in place to maintain the correct angle when it is not fully open, which is inconvenient to operate.

Method used

Introducing an oven lid angle locking mechanism into the oven, comprising a moving part and a locking part, allows the oven lid to be locked at the appropriate angle by switching between locked and unlocked states via the locking part, preventing it from deviating on its own.

Benefits of technology

Users can easily open and close the oven lid to the appropriate angle without holding it during the grilling process, improving ease of operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of food cooking devices, and particularly discloses an oven. The oven comprises an oven body and an oven cover hinged to the oven body, and the oven cover can open or close the cooking cavity; the oven further comprises an oven cover angle locking mechanism, and the oven cover angle locking mechanism comprises a movable piece and a locking piece. The movable part is movably connected with the furnace body and the furnace cover, and the furnace cover can drive the movable part to move when rotating relative to the furnace body; the locking piece is arranged on the furnace body or the furnace cover, the locking piece can be switched between a locking state and an unlocking state, in the locking state, the locking piece and the movable piece are locked to limit rotation of the furnace cover, and in the unlocking state, the locking piece and the movable piece are separated. In the utility model, after the furnace cover is opened to a proper angle, the locking piece is switched to the locking device, and the locking piece and the movable piece are locked at the moment, so that the rotation of the furnace cover can be limited, the furnace cover does not deviate from the position at the moment under the action of self gravity even if a user loosens the furnace cover, and the operation of the user is convenient.
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Description

Technical Field

[0001] This utility model relates to the field of food cooking devices, and in particular to a baking oven. Background Technology

[0002] An oven is a device that uses hot air to bake and cook food. Ovens with lids retain heat better and prevent users from being directly exposed to smoke, making them popular with consumers.

[0003] Generally, a covered oven includes an oven body with a recessed cooking cavity, a lid hinged to the oven body, and a grill pan inside the cooking cavity for grilling food. When grilling food, the lid is usually closed onto the oven body.

[0004] In the aforementioned covered ovens, since the oven body and lid are only connected by a simple hinge, the user does not need to hold the lid when it is fully open or fully closed. However, during the grilling process, when the user needs to check the food's progress or flip it, it is not necessary to fully open the lid. Therefore, the user needs to hold the lid to open it at the appropriate angle, which is inconvenient for the user. Utility Model Content

[0005] The technical problem solved by this utility model is to provide an oven that can effectively solve the technical problem in the prior art where the oven lid must be held by hand to open it to the appropriate angle when it is not fully open, which is inconvenient to operate.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] An oven includes an oven body and an oven lid hinged to the oven body. The oven body has a cooking chamber, and the oven lid is capable of opening or closing the cooking chamber. The oven also includes an oven lid angle locking mechanism, which comprises:

[0008] The movable component is movably connected to both the furnace body and the furnace cover, and the movable component can be moved when the furnace cover rotates relative to the furnace body.

[0009] A locking element is disposed on the furnace body or the furnace cover. The locking element can switch between a locked state and an unlocked state. In the locked state, the locking element locks with the movable element to restrict the rotation of the furnace cover. In the unlocked state, the locking element is separated from the movable element.

[0010] The oven described in this utility model has the following advantages compared with the prior art:

[0011] When using this oven, simply place the food to be cooked inside the cooking chamber. To grill the food, simply place the oven lid on the oven body. During grilling, if you need to open the oven lid, keep the locking mechanism unlocked. At this time, the locking mechanism is separated from the moving part, and the locking mechanism will not interfere with the movement of the moving part, thus not interfering with the opening of the oven lid. The user controls the rotation of the oven lid relative to the oven body. During this process, the oven lid drives the moving part to move. When the oven lid is opened to the appropriate angle, switch the locking mechanism to the locking device. At this time, the locking mechanism is locked with the moving part, thereby restricting the rotation of the oven lid. When the user releases the oven lid, the oven lid will not deviate from its current position under its own weight, making it convenient for the user to operate.

[0012] In one embodiment, the movable element includes:

[0013] The first movable part is slidably disposed on the furnace cover along the first direction;

[0014] The second movable part is connected to the first movable part, and the second movable part is slidably disposed on the furnace body along a second direction, wherein the first direction and the second direction are perpendicular to each other.

[0015] In one embodiment, the furnace lid angle locking mechanism further includes a first guide assembly, the first guide assembly comprising:

[0016] A first guide member is disposed on the furnace cover, and the first movable part is connected to the furnace cover through the first guide member;

[0017] A first guide groove is disposed on the first movable part, the first guide groove extends along the first direction, and the first guide member slides in conjunction with the first guide groove.

[0018] In one embodiment, the furnace lid angle locking mechanism further includes a second guide assembly, the second guide assembly comprising:

[0019] A second guide component is disposed in one of the second movable part and the furnace body;

[0020] The second guide groove is disposed in the second movable part and the furnace body, the second guide groove extends along the second direction, and the second guide member and the second guide groove are slidably engaged.

[0021] In one embodiment, the furnace body is provided with a limiting and anti-detachment structure that slides with the second movable part, the limiting and anti-detachment structure being able to prevent the second movable part from detaching from the furnace body.

[0022] In one embodiment, the limiting and anti-detachment structure includes a first limiting surface, a second limiting surface, and a third limiting surface. The first limiting surface and the second limiting surface are arranged at a distance from each other to limit the two opposite sides of the second movable part, respectively. The third limiting surface is arranged perpendicular to the first limiting surface to limit the surface of the second movable part away from the furnace body.

[0023] In one embodiment, the locking member includes a locking disc, which is eccentrically and rotatably disposed on the furnace body or the furnace cover. The side of the locking disc is provided with a locking surface. In the locked state, the locking surface rotates with the locking disc to abut against the movable member; in the unlocked state, the locking surface rotates with the locking disc to separate from the movable member.

[0024] In one embodiment, a locking protrusion is provided on the locking surface.

[0025] In one embodiment, the locking element further includes a rotating handle that is fixedly connected to the locking disc.

[0026] In one embodiment, the locking element further includes a rotary handle limiting pin, which is disposed on the furnace body, and in the unlocked state, the rotary handle abuts against the rotary handle limiting pin. Attached Figure Description

[0027] Figure 1 A schematic diagram of the oven lid when closed, provided for an embodiment of this utility model;

[0028] Figure 2 for Figure 1 Schematic diagram of the furnace cover angle locking mechanism;

[0029] Figure 3 This is a schematic diagram of the oven provided in an embodiment of the present invention, showing the oven lid in a partially open state.

[0030] Figure 4 for Figure 3 Schematic diagram of the furnace cover angle locking mechanism;

[0031] Figure 5 A schematic diagram of the oven with the oven lid fully open, provided in an embodiment of this utility model;

[0032] Figure 6 for Figure 5 Schematic diagram of the furnace cover angle locking mechanism;

[0033] Figure 7 This is a schematic diagram of the furnace body provided in an embodiment of the present utility model;

[0034] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0035] Figure 9 This is a schematic diagram of the structure of the movable component provided in an embodiment of the present utility model;

[0036] Figure 10 A schematic diagram of the locking member provided in this embodiment of the utility model switching between an unlocked state and a locked state;

[0037] Figure 11 A schematic diagram showing a locking protrusion on the locking surface of the locking disc provided in an embodiment of this utility model.

[0038] Label Explanation:

[0039] 1. Furnace lid angle locking mechanism; 11. Moving part; 111. First moving part; 112. Second moving part; 12. Locking part; 121. Locking disc; 1211. Locking surface; 12111. Locking protrusion; 122. Rotary handle; 123. Rotary handle limit pin;

[0040] 131. First guide member; 132. First guide groove; 141. Second guide member; 142. Second guide groove;

[0041] 2. Furnace body; 21. Limiting and anti-detachment structure; 211. First limiting surface; 212. Second limiting surface; 213. Third limiting surface; 214. Protective plate; 23. Locking component mounting seat; 231. Locking disc shaft;

[0042] 3. Furnace lid; 31. Handrail. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] In the description of this application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0045] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] See Figure 1 This embodiment provides an oven that can grill food and is easy to operate.

[0048] Specifically, the oven includes an oven body 2 and an oven cover 3 hinged to the oven body 2. The oven body 2 has a cooking cavity with an opening, and the oven cover 3 can open or close the cooking cavity.

[0049] Furthermore, a baking tray is provided inside the cooking cavity, on which ingredients can be heated.

[0050] In order to ensure that the oven lid 3 does not require the user's hand to hold it when it is opened at any angle, in this embodiment, the oven also includes an oven lid angle locking mechanism 1.

[0051] Specifically, see Figures 1-6 In this embodiment, the furnace cover angle locking mechanism 1 includes a movable part 11 and a locking part 12.

[0052] The movable part 11 is movably connected to both the furnace body 2 and the furnace cover 3. When the furnace cover 3 rotates relative to the furnace body 2, it can drive the movable part 11 to move.

[0053] The locking element 12 is provided on the furnace body 2 or the furnace cover 3. The locking element 12 can switch between a locked state and an unlocked state. In the locked state, the locking element 12 locks with the movable element 11 to restrict the rotation of the furnace cover 3. In the unlocked state, the locking element 12 is separated from the movable element 11.

[0054] Optionally, in this embodiment, the movable part 11 is located on the side of the oven; the locking part 12 is disposed on the oven body 2, specifically on the side of the oven body 2.

[0055] Of course, in other embodiments, the locking element 12 may also be provided on the furnace cover 3.

[0056] In this embodiment, the oven is used by placing the food to be cooked inside the cooking chamber. When grilling, the oven lid 3 is placed on the oven body 2. During grilling, if the oven lid 3 needs to be opened, the locking member 12 is in the unlocked state. At this time, the locking member 12 is separated from the moving member 11, and the locking member 12 will not interfere with the movement of the moving member 11, thus not interfering with the opening of the oven lid 3. The user controls the oven lid 3 to rotate relative to the oven body 2. During this process, the oven lid 3 drives the moving member 11 to move. When the oven lid 3 is opened to a suitable angle, the locking member 12 is switched to the locking device. At this time, the locking member 12 is locked with the moving member 11, thereby restricting the rotation of the oven lid 3. When the user releases the oven lid 3, the oven lid 3 will not deviate from its current position under its own gravity, which is convenient for the user's operation.

[0057] Further, see Figure 3 To facilitate users in opening the furnace cover 3, a handle 31 is provided on the furnace cover 3. When the locking element 12 is in the unlocked state, the user can open the furnace cover 3 by lifting the handle 31.

[0058] Furthermore, in one embodiment, the movable element 11 includes a first movable part 111 and a second movable part 112.

[0059] The first movable part 111 is slidably disposed on the furnace cover 3 along the first direction.

[0060] The second movable part 112 is connected to the first movable part 111. The second movable part 112 is slidably disposed on the furnace body 2 along the second direction, and the first direction and the second direction are perpendicular to each other.

[0061] Specifically, in this embodiment, the first direction is horizontal and the second direction is vertical. When the furnace cover 3 rotates open relative to the furnace body 2, the first movable part 111 of the movable part 11 moves horizontally relative to the furnace cover 3, and the second movable part of the movable part 11 moves vertically relative to the furnace body 2, so that the furnace cover 3 can be opened smoothly.

[0062] Specifically, in this embodiment, the movable part 11 is T-shaped.

[0063] In one embodiment, to limit the movement trajectory of the first movable part 111 and ensure that the first movable part 111 always slides back and forth along the first direction, see [reference needed]. Figure 2 The furnace cover angle locking mechanism 1 also includes a first guide assembly, which includes a first guide member 131 and a first guide groove 132.

[0064] The first guide member 131 is disposed on the furnace cover 3, and the first movable part 111 is connected to the furnace cover 3 through the first guide member 131.

[0065] The first guide groove 132 is disposed on the first movable part 111, the first guide groove 132 extends along the first direction, and the first guide member 131 slides in cooperation with the first guide groove 132.

[0066] Specifically, in this embodiment, see Figure 1 and Figure 2 The first guide member 131 is fixedly disposed on the furnace cover 3, and the first guide groove 132 is disposed on the first movable part 111; wherein, the first guide member 131 is a guide screw, the first guide groove 132 is a through groove passing through the first movable part 111, the guide screw is threadedly connected to the furnace cover 3, and the diameter of the nut of the guide screw is larger than the width of the first guide groove 132, so that the nut can restrict the first movable part 111 from detaching from the furnace cover 3.

[0067] In one embodiment, see Figures 7-9 In order to limit the movement trajectory of the second movable part 112 and ensure that the second movable part 112 always reciprocates along the second direction, the furnace cover angle locking mechanism 1 also includes a second guide assembly, which includes a second guide member 141 and a second guide groove 142.

[0068] The second guide 141 is disposed in one of the second movable part 112 and the furnace body 2.

[0069] The second guide groove 142 is disposed in the other of the second movable part 112 and the furnace body 2. The second guide groove 142 extends along the second direction, and the second guide member 141 and the second guide groove 142 are slidably engaged.

[0070] Specifically, in this embodiment, the second guide member 141 is disposed on the furnace body 2, and the second guide groove 142 is disposed on the second movable part 112.

[0071] For example, with Figure 1 and Figure 2 Taking the indicated orientation as an example, when it is necessary to open the furnace cover 3, the locking element 12 is switched to the unlocked state, the user lifts the handle 31, and the furnace cover 3 moves along... Figure 1 As shown, rotating counterclockwise, under the constraint of the first guide assembly, the position of the first movable part 111 in the horizontal direction remains unchanged (the position of the first movable part 111 in the vertical direction changes with the second movable part 112), the first guide member 131 slides to the right relative to the first guide groove 132 in the first direction, and under the constraint of the second guide assembly, the second movable part 112 slides upward in the second direction, and the first movable part 111 rises with the second movable part 112. Figure 3 and Figure 4 As shown, when the furnace lid 3 is opened to a suitable angle, the locking element 12 is switched from the unlocked state to the locked state. At this time, the user releases the handle 31, and the furnace lid 3 can remain at the current open angle. Figure 5 and Figure 6As shown, when the furnace cover 3 is in the fully open state, the locking element 12 can be in the unlocked state, and at this time the furnace cover 3 can be stably in the fully open state.

[0072] For example, with Figure 5 and Figure 6 Taking the indicated orientation as an example, if it is necessary to close or reduce the opening angle of the furnace cover 3 to a smaller size, the user pulls down the handle 31, and the furnace cover 3 moves along... Figure 5 As shown, rotating clockwise, under the constraint of the first guide assembly, the position of the first movable part 111 in the horizontal direction remains unchanged (the position of the first movable part 111 in the vertical direction changes with the second movable part 112). The first guide member 131 slides to the left relative to the first guide groove 132 in the first direction. Under the constraint of the second guide assembly, the second movable part 112 slides downward in the second direction, and the first movable part 111 descends with the second movable part 112. When the position of the furnace cover 3 is adjusted to a suitable position, the locking member 12 is switched from the unlocked state to the locked state. At this time, the user releases the handle 31, and the furnace cover 3 can remain in the current position.

[0073] Further, see Figure 8 In one embodiment, in order to prevent the second movable part 112 from detaching from the furnace body 2 during movement, the furnace body 2 is provided with a limiting and anti-detachment structure 21 that slides with the second movable part 112. The limiting and anti-detachment structure 21 can prevent the second movable part 112 from detaching from the furnace body 2.

[0074] In one embodiment, the limiting and anti-detachment structure 21 includes a first limiting surface 211, a second limiting surface 212 and a third limiting surface 213. The first limiting surface 211 and the second limiting surface 212 are arranged at a distance from each other to limit the two opposite sides of the second movable part 112 respectively. The third limiting surface 213 is arranged perpendicular to the first limiting surface 211 to limit the surface of the second movable part 112 away from the furnace body 2.

[0075] The first limiting surface 211, the second limiting surface 212, and the third limiting surface 213 work together to prevent the second movable part 112 from detaching from the furnace body 2.

[0076] Specifically, the limiting and anti-detachment structure 21 also includes a protective plate 214, which is disposed on the outer side of the furnace body 2. The protective plate 214 is L-shaped, and the first limiting surface 211 and the second limiting surface 212 are both located on the protective plate 214.

[0077] In one embodiment, see Figures 1-6The locking component 12 includes a locking disc 121, which is eccentrically and rotatably mounted on the furnace body 2 or the furnace cover 3. The side of the locking disc 121 is provided with a locking surface 1211. In the locked state, the locking surface 1211 rotates with the locking disc 121 until it abuts against the movable component 11. In the unlocked state, the locking surface 1211 rotates with the locking disc 121 until it separates from the movable component 11.

[0078] Specifically, in this embodiment, a locking element mounting seat 23 is also provided on the side of the furnace body 2, and the third limiting surface 213 is the side of the locking element mounting seat 23 facing the second movable part 112.

[0079] The locking disc 121 is eccentrically and rotatably mounted on the locking element mounting base 23. Specifically, the locking element mounting base 23 is provided with a locking disc rotating shaft 231, and the locking disc 121 is eccentrically and rotatably mounted on the locking disc rotating shaft 231.

[0080] Specifically, in Figure 10 In the diagram, a solid line indicates that the locking element 12 is in the unlocked state; a dashed line indicates that the locking element 12 is in the locked state. Since the locking disc 121 is eccentrically and rotatably mounted on the locking element mounting base 23, in the locked state, the locking surface 1211 rotates with the locking disc 121 until it abuts against the movable element 11; in the unlocked state, the locking surface 1211 rotates with the locking disc 121 until it separates from the movable element 11.

[0081] exist Figure 10 In the case of the locking disk 121 in the locked state, the center of the locking disk 121 in the unlocked state does not coincide with the center of the locking disk 121 in the unlocked state.

[0082] Further, see Figure 11 In one embodiment, to ensure that the locking surface 1211 can rotate with the locking disc 121 to abut against the movable member 11 in the locked state, a locking protrusion 12111 is provided on the locking surface 1211. The locking protrusion 12111 can abut against the movable member 11 to fully restrict the rotation of the furnace cover 3.

[0083] Specifically, the locking protrusion 12111 is a protrusion with a smaller thickness at both ends and a larger thickness in the middle, with a thinner end, to ensure that the locking disc 121 can smoothly switch between the locked and unlocked states.

[0084] Furthermore, in one embodiment, in order to facilitate user operation of the locking member 12, the locking member 12 also includes a rotating handle 122, which is fixedly connected to the locking disc 121.

[0085] Furthermore, in one embodiment, in order to prevent the locking disc 121 from rotating arbitrarily when the locking member 12 is in the unlocked state, the locking member 12 also includes a rotating handle limiting pin 123. The rotating handle limiting pin 123 is disposed on the furnace body 2. In the unlocked state, the rotating handle 122 abuts against the rotating handle limiting pin 123 to limit the rotation of the locking member 12 under its own gravity, so that the user can quickly switch the locking member 12 to the locked state when needed.

[0086] Specifically, in this embodiment, the rotating handle limiting pin 123 is disposed on the locking component mounting base 23.

[0087] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0088] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An oven, comprising an oven body (2) and an oven cover (3) hinged to the oven body (2), wherein the oven body (2) has a cooking cavity, and the oven cover (3) is capable of opening or closing the cooking cavity; characterized in that, The oven also includes a lid angle locking mechanism (1), which comprises: The movable part (11) is movably connected to both the furnace body (2) and the furnace cover (3). When the furnace cover (3) rotates relative to the furnace body (2), it can drive the movable part (11) to move. A locking element (12) is provided on the furnace body (2) or the furnace cover (3). The locking element (12) can switch between a locked state and an unlocked state. In the locked state, the locking element (12) is locked to the movable element (11) to restrict the rotation of the furnace cover (3). In the unlocked state, the locking element (12) is separated from the movable element (11).

2. The oven according to claim 1, characterized in that, The movable component (11) includes: The first movable part (111) is slidably disposed on the furnace cover (3) along the first direction; The second movable part (112) is connected to the first movable part (111). The second movable part (112) is slidably disposed on the furnace body (2) along the second direction, and the first direction and the second direction are perpendicular to each other.

3. The oven according to claim 2, characterized in that, The furnace cover angle locking mechanism (1) further includes a first guide assembly, which includes: A first guide member (131) is disposed on the furnace cover (3), and the first movable part (111) is connected to the furnace cover (3) through the first guide member (131); A first guide groove (132) is disposed on the first movable part (111). The first guide groove (132) extends along the first direction, and the first guide member (131) slides in cooperation with the first guide groove (132).

4. The oven according to claim 2, characterized in that, The furnace cover angle locking mechanism (1) further includes a second guide assembly, the second guide assembly comprising: A second guide (141) is disposed in one of the second movable part (112) and the furnace body (2); The second guide groove (142) is disposed in the other of the second movable part (112) and the furnace body (2). The second guide groove (142) extends along the second direction, and the second guide member (141) and the second guide groove (142) are slidably engaged.

5. The oven according to claim 2, characterized in that, The furnace body (2) is provided with a limiting and anti-detachment structure (21) that slides with the second movable part (112). The limiting and anti-detachment structure (21) can prevent the second movable part (112) from detaching from the furnace body (2).

6. The oven according to claim 5, characterized in that, The limiting and anti-detachment structure (21) includes a first limiting surface (211), a second limiting surface (212), and a third limiting surface (213). The first limiting surface (211) and the second limiting surface (212) are arranged at a distance from each other to limit the two opposite sides of the second movable part (112) respectively. The third limiting surface (213) is arranged perpendicular to the first limiting surface (211) to limit the surface of the second movable part (112) away from the furnace body (2).

7. The oven according to any one of claims 1-6, characterized in that, The locking component (12) includes a locking disc (121), which is eccentrically and rotatably disposed on the furnace body (2) or the furnace cover (3). The side of the locking disc (121) is provided with a locking surface (1211). In the locked state, the locking surface (1211) rotates with the locking disc (121) to abut against the movable component (11). In the unlocked state, the locking surface (1211) rotates with the locking disc (121) to separate from the movable component (11).

8. The oven according to claim 7, characterized in that, The locking surface (1211) is provided with a locking protrusion (12111).

9. The oven according to claim 7, characterized in that, The locking component (12) also includes a rotating handle (122), which is fixedly connected to the locking disc (121).

10. The oven according to claim 9, characterized in that, The locking component (12) also includes a rotating handle limiting pin (123), which is disposed on the furnace body (2). In the unlocked state, the rotating handle (122) abuts against the rotating handle limiting pin (123).