Frying-baking machine

Abstract

Provided is a frying-baking machine comprising: a base assembly (10), an upper cover assembly (20), and a hinge assembly (30) through which the upper cover assembly (20) is rotatably connected to the base assembly (10). The hinge assembly (30) is capable of moving up and down relative to the base assembly (10), and the frying-baking machine has a first open state in which the upper cover assembly (20) is upright relative to the base assembly (10). A limiting assembly (50) is provided between the base assembly (10) and the hinge assembly (30) and comprises a limiting protrusion (51) and a limiting groove (52), one of which is provided on the hinge assembly (30), and the other is provided on the base assembly (10). When the frying-baking machine is in the first open state, the limiting protrusion (51) and an inner wall of the limiting groove (52) abut against each other so as to limit a rotation of the hinge assembly (30) relative to the base assembly (10).

Description

[0001] Frying-baking machine

[0002] Technical Field

[0003] The present application relates to the technical field of household kitchen appliances, particularly to a frying-baking machine.

[0004] Background

[0005] A frying-baking machine usually includes a base assembly and an upper cover assembly, wherein the upper cover assembly and the base assembly are rotatably connected through a hinge assembly, so that the upper cover assembly can be opened or closed relative to the base assembly.

[0006] In some frying-baking machines, when the upper cover assembly is closed, the hinge assembly can move up and down relative to the base assembly, so that food can lift the upper cover assembly to a floating state. When the upper cover assembly is in an upright state, the strength of the connection between the hinge assembly and the base assembly is weak, making it difficult for the hinge assembly to provide effective support for the upper cover assembly, resulting in the upper cover assembly being prone to tipping over.

[0007] Summary

[0008] Based on this, it is necessary to provide a frying-baking machine that can improve the stability of the upper cover assembly when it is upright.

[0009] A frying-baking machine comprising: a base assembly, an upper cover assembly, and a hinge assembly. The upper cover assembly is rotatably connected to the base assembly through the hinge assembly, and the hinge assembly is capable of moving up and down relative to the base assembly. The frying-baking machine has a first open state in which the upper cover assembly is upright relative to the base assembly. A limiting assembly is provided between the base assembly and the hinge assembly and comprises a limiting protrusion and a limiting groove. One of the limiting protrusion and the limiting groove is provided on the hinge assembly, and the other is provided on the base assembly. When the frying-baking machine is in the first open state, the limiting protrusion and an inner wall of the limiting groove abut against each other so as to limit a rotation of the hinge assembly relative to the base assembly.

[0010] In the frying-baking machine provided in the present application, by providing the limiting assembly which includes the limiting protrusion and the limiting groove, the limiting protrusion and the limiting groove cooperate to restrict the relative rotation between the hinge assembly and the base assembly, improving the strength of the connection between the hinge assembly and the base assembly, thereby stabilizing the upper cover assembly in the upright state and reducing the occurrence of tipping over of the upper cover assembly.

[0011] In one embodiment, the base assembly is provided with a lower hinge groove, and the hinge assembly is arranged to be movable up and down in the lower hinge groove. The limiting groove is provided in a bottom wall of the lower hinge groove, and the limiting protrusion protrudes from an end of the hinge assembly located in the limiting groove.

[0012] In this way, moving the hinge assembly downwards allows the limiting protrusion to extend into the limiting groove, while moving the hinge assembly upwards allows the limiting protrusion to disengage from the limiting groove, making the opening and closing operation of the frying-baking machine very convenient.

[0013] In one embodiment, the limiting groove is located on a side of the lower hinge groove away from a center of the base assembly.

[0014] Correspondingly, when the frying-baking machine is in the first open state, the limiting protrusion is located on a side of a lower end of the hinge assembly away from the center of the base assembly. Therefore, the limiting protrusion is located on a side of the lower rotary shaft away from the center of the base assembly. The side wall of the limiting protrusion can thus abut more tightly against the side wall of the limiting groove near the center of the base assembly, thereby better preventing the hinge assembly from rotating in a direction away from the center of the base assembly and ensuring the stability of the hinge assembly in an upright state.

[0015] In one embodiment, the limiting protrusion is provided with an abutting surface, and a side wall of the limiting groove is provided with a stop surface. When the frying-baking machine is in the first open state, the hinge assembly is in an upright state, and the abutting surface abuts against the stop surface.

[0016] In this way, the rotation of the hinge assembly can be effectively restricted by the cooperation between the abutting surface and the stop surface.

[0017] In one embodiment, the abutting surface tilts upwards when the hinge assembly is in the upright state.

[0018] In this way, in the first open state, the force of the abutting surface abutting against the stop surface is greater, and the limiting protrusion can be more tightly engaged with the limiting groove, thereby increasing the strength of the connection between the hinge assembly and the base assembly, which is more conducive to maintaining the upper cover assembly in the upright state.

[0019] In one embodiment, an angle a between the abutting surface and a horizontal plane when the hinge assembly is in the upright state is 82 °~87 °.

[0020] In this way, it can ensure that the limiting protrusion is easy to extend into or disengage from the limiting groove, and the limiting protrusion is tightly engaged after extending into the limiting groove, resulting in a high strength of the connection between the hinge assembly and the base assembly.

[0021] In one embodiment, the hinge assembly is rotatably connected to the base assembly through a lower rotary shaft. When the hinge assembly moves to an upper end of the lower hinge groove, it is able to rotate around an axis of the lower rotary shaft. A vertical plane passing through the axis of the lower rotary shaft when the hinge assembly is in the upright state is defined as a shaft center plane, and a minimum distance D1 between the shaft center plane and the abutting surface is 0-2mm.

[0022] The larger the minimum distance between the abutting surface and the shaft center plane, the easier it is for the hinge assembly to rotate around the lower rotary shaft, and thus the easier it is for the upper cover assembly to tip over. In this embodiment, the minimum distance D1 between the shaft center plane and the abutting surface is 0-2mm, making it difficult for the hinge assembly to rotate around the lower rotary shaft. As a result, the hinge assembly can remain stable in the upright position, providing effective support for the upper cover assembly and preventing it from tipping over.

[0023] In one embodiment, a side wall of the hinge assembly near the center of the base assembly when the hinge assembly is in the upright state is defined as a first side wall, and a side wall of the hinge assembly away from the center of the base assembly when the hinge assembly is in the upright state is defined as a second side wall. The abutting surface is located on a side of the shaft center plane near the second side wall; or the abutting surface is located on a side of the shaft center plane near the first side wall; or a part of the abutting surface is located on the side of the shaft center plane near the first side wall, and the other part is located on the side of the shaft center plane near the second side wall; or the abutting surface coincides with the shaft center plane.

[0024] In one embodiment, the limiting protrusion has a minimum thickness D, D>4mmo

[0025] In this way, it’s ensured that the limiting protrusion has sufficient structural strength to prevent the force of the limiting protrusion against the stop surface from causing the limiting protrusion to break.

[0026] In one embodiment, the limiting protrusion protrudes from an end of the hinge assembly by a length L that is 3mm~10mm.

[0027] In this way, it is ensured that the limiting protrusion and the limiting groove have sufficient fitting length, thereby ensuring the effective anti-rotation limiting of the limiting groove on the limiting protrusion, ensuring that the hinge assembly does not rotate relative to the base assembly, and in turn ensuring the stability of the frying-baking machine when it is in the first open state.

[0028] In one embodiment, a side wall of the lower hinge groove is provided with an avoiding groove for accommodating the limiting protrusion. When the hinge assembly moves to up upper end of the lower hinge groove, the limiting protrusion can be turned into the avoiding groove to enable the hinge assembly to rotate at the upper end of the lower hinge groove. The frying-baking machine further has a second open state in which the upper cover assembly is flipped to a side of the base assembly. When the frying-baking machine is in the second open state, the hinge assembly is in a lying-down state, and the limiting protrusion is accommodated in the avoiding groove.

[0029] In this way, when the upper cover assembly is lifted upwards such that the hinge assembly moves to the upper end of the lower hinge groove, the limiting protrusion disengages from the limiting groove. At this time, the upper cover assembly can be rotated in the direction of further opening, thereby enabling the upper cover assembly to rotate to the second open state. It can be seen that providing the avoiding groove can achieve normal opening of the frying-baking machine.

[0030] Description of the Drawings

[0031] In order to provide a clearer explanation of the technical solutions in the embodiments of the present application or in traditional technologies, a brief introduction will be given to the accompanying drawings required for the description of the embodiments or traditional technologies. It is obvious that the accompanying drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor.

[0032] Figure 1 is a side view of a frying-baking machine in a closed state according to an embodiment of the present application;

[0033] Figure 2 is a schematic view of the frying-baking machine shown in Figure 1 with the upper cover assembly in a floating state;

[0034] Figure 3 is a side view of a frying-baking machine in a first open state according to an embodiment of the present application;

[0035] Figure 4 is a side view of a frying-baking machine in a second open state according to an embodiment of the present application;

[0036] Figure 5 is a perspective view of a frying-baking machine in a second open state according to an embodiment of the present application;

[0037] Figure 6 is an exploded view of a frying-baking machine according to an embodiment of the present application;

[0038] Figure 7 is a sectional view of a frying-baking machine in a first open state according to an embodiment of the present application;

[0039] Figure 8 is an enlarged partial view of part A in Figure 7;

[0040] Figure 9 is a sectional view of a frying-baking machine in a second open state according to an embodiment of the present application;

[0041] Figure 10 is an enlarged partial view of part B in Figure 9;

[0042] Figure 11 is a perspective view of a base assembly according to an embodiment of the present application;

[0043] Figure 12 is a perspective view of a hinge assembly according to an embodiment of the present application;

[0044] Figure 13 is a sectional view of a hinge assembly according to an embodiment of the present application;

[0045] Figure 14 is a sectional view of a hinge assembly according to another embodiment of the present application;

[0046] Figure 15 is a semi sectional perspective view of a partial structure of the lower shell according to an embodiment of the present application;

[0047] Figure 16 is a perspective view of a lower baking tray according to an embodiment of the present application;

[0048] Figure 17 is a schematic view of an upward sloping surface and a downward sloping surface.

[0049] Reference numerals: 10. Base assembly; 11. Lower shell; 111. First groove; 112. First hole; 12. Lower baking tray; 121. Second groove; 122. Second hole; 13. Lower hinge groove; 132. Avoiding groove; 14. Movable hole; 20. Upper cover assembly; 21. Upper shell; 22. Upper baking tray; 30. Hinge assembly; 31 . First side wall; 32. Second side wall; 40. Upper rotary shaft; 50. Limiting assembly; 51. Limiting protrusion; 511 , abutting surface; 52. Limiting groove; 521. Stop surface; 60. Lower rotary shaft; 610. Shaft center plane.

[0050] Detailed Description of the Embodiments

[0051] In order to make the above objectives, features, and advantages of the present application more obvious and understandable, a detailed explanation of the specific implementation of the present application will be provided below in conjunction with the accompanying drawings. Many specific details are elaborated in the following description to facilitate a thorough understanding of the present application. However, the present application can be implemented in many different ways than described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0052] It should be noted that when an assembly is referred to as "fixed to" or "provided / arranged to" another assembly, it can be directly on said another assembly or there can be an intermediate assembly. When an assembly is considered to "be connected" to another assembly, it can be directly connected to said another assembly or there may be an intermediate assembly present at the same time. The term 'substantially' used in the present application means “generally / basically”. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the specification of the present application are for illustrative purposes only and do not represent the only mode of implementation.

[0053] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, the features that are defined by "first" and "second" can explicitly or implicitly include at least one of these features. In the description of the present application, "multiple / a plurality of / several" means at least two, such as two, three, etc., unless otherwise specified.

[0054] In the present application, unless otherwise specified and defined, the first feature being “on” or “under” the second feature may indicate that the first feature is directly in contact with the second feature, or indirectly through an intermediate medium. Moreover, the first feature being 'above' the second feature may indicate that the first feature is directly above or diagonally above the second feature, or only indicates that the first feature has a greater horizontal height than the second feature. The first feature being “below” the second feature may indicate that the first feature is located directly or diagonally below the second feature, or simply indicate that the first feature has a smaller horizontal height than the second feature.

[0055] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meanings as those commonly understood by those skilled in the art belonging to the technical field of the present application. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the scope of the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0056] Please refer to Figures 1 to 4. The present application provides a frying-baking machine comprising a base assembly 10, an upper cover assembly 20, and a hinge assembly 30. The upper cover assembly 20 is rotatably connected to the base assembly 10 through the hinge assembly 30. The frying-baking machine has a closed state, a first open state in which the upper cover assembly 20 is upright relative to the base assembly 10, and a second open state in which the upper cover assembly 20 is opened to a side of the base assembly 10. As shown in Figure 1 , in the closed state, the upper cover assembly 20 is closed onto the base assembly 10, and the angle between the upper cover assembly 20 and the base assembly 10 is substantially 0 °. As shown in Figure 3, in the first open state, the angle 0 between the upper cover assembly 20 and the base assembly 10 is close to 90 degrees. In some embodiments, the angle 0 between the upper cover assembly 20 and the base assembly 10 can be between 90 ° and 110 °, for example, 0 can be 90 °, 93 °, 95 °, 98 °, or 110 °, and so on. As shown in Figure 3, it is preferred that 0>9O ° to avoid accidental contact that may cause the upper cover assembly 20 to close. As shown in Figure 4, in the second open state, the angle between the upper cover assembly 20 and the base assembly 10 is substantially 180 °.

[0057] Please refer to Figures 5 and 6. One end of the hinge assembly 30 is rotatably connected to the base assembly 10 through a lower rotary shaft 60, and the other end is rotatably connected to the upper cover assembly 20 through an upper rotary shaft 40. The hinge assembly 30 has an upright state and a lying-down state. When the frying-baking machine is in the closed state and the first open state, the hinge assembly 30 is in the upright state, as shown in Figure 7; When the frying-baking machine is in the second open state, the hinge assembly 30 is in a lying-down state, as shown in Figure 9. When the frying-baking machine transitions between the closed state and the first open state, the hinge assembly 30 remains in the upright position, and the upper cover assembly 20 rotates around the upper rotary shaft 40; When the frying-baking machine transitions between the first open state and the second open state, the hinge assembly 30 and the upper cover assembly 20 rotate together around the lower rotary shaft 60. In this way, during the opening and closing process of the frying-baking machine between the closed state and the first open state, as well as between the first open state and the second open state, there is only one rotation, making the opening and closing process very smooth.

[0058] Please refer to Figures 5 and 6. The upper cover assembly 20 comprises an upper shell 21 and an upper baking tray 22 mounted on the upper shell 21. The base assembly 10 comprises a lower shell 11 and a lower baking tray 12 mounted on the lower shell 11 . In the closed state, the upper baking tray 22 and the lower baking tray 12 cooperate to form a relatively closed cooking chamber. As shown in Figure 2, the hinge assembly 30 can also lift and lower relative to the base assembly 10. Therefore, the upper cover assembly 20 has a floating function, so that when the lid is closed, food can lift the upper cover assembly 20. At this time, there is a certain distance between the upper baking tray 22 and the lower baking tray 12, which can prevent food from being squeezed too firmly. Specifically, as shown in Figure 11 , the base assembly 10 is equipped with a lower hinge groove 13, a side wall of which is provided with a movable hole 14 extending in a height direction of the base assembly 10. The hinge assembly 30 is arranged in the lower hinge groove 13 to be movable up and down, and the lower rotary shaft 60 is inserted into the movable hole 14. Therefore, when the hinge assembly 30 moves up and down in the lower hinge groove 13, the lower rotary shaft 60 moves up and down in the movable hole 14. When the hinge assembly 30 moves downwards to the bottom of the lower hinge groove 13, the lower rotary shaft 60 is located at the lower end of the movable hole 14. The lower hinge groove 13 restricts the hinge assembly 30 to an upright state. At this time, the hinge assembly 30 cannot rotate relative to the base assembly 10 about the lower rotary shaft 60, while the upper cover assembly 20 can rotate relative to the hinge assembly 30 about the upper rotary shaft 40, so that the frying-baking machine can switch between the closed state and the first open state. When the hinge assembly 30 moves upward to an opening at the upper end of the lower hinge groove 13, the lower rotary shaft 60 is located at the upper end of the movable hole 14, and the hinge assembly 30 can rotate around the lower rotary shaft 60, thereby enabling the hinge assembly 30 to rotate from an upright state to a lying-down state. Correspondingly, the frying-baking machine can transition from the first open state to the second open state.

[0059] In order to ensure the smoothness of the up and down movement of the hinge assembly, a certain clearance is usually reserved between the inner wall of the lower hinge groove and the hinge assembly. Therefore, there is a small swing space for the hinge assembly in the lower hinge groove such that when the frying-baking machine is in the first open state, the strength of the connection between the hinge assembly and the base assembly is weak, making the upper cover assembly prone to tipping over.

[0060] In the present application, please refer to Figures 8, 12, 13, and 15. A limiting assembly 50 is provided between the base assembly 10 and the hinge assembly 30. The limiting assembly 50 comprises a limiting protrusion 51 and a limiting groove 52. One of the limiting protrusion 51 and the limiting groove 52 is located on the hinge assembly 30, and the other is located on the base assembly 10. When the frying-baking machine is in the first open position, the limiting protrusion 51 extends into the limiting groove 52 and abuts against the inner wall of the limiting groove 52 to limit the rotation of the hinge assembly 30 relative to the base assembly 10. In this way, by providing the limiting assembly 50 which includes the limiting protrusion 51 and the limiting groove 52 that cooperate with each other to limit the relative rotation between the hinge assembly 30 and the base assembly 10, the strength of the connection between the hinge assembly 30 and the base assembly 10 is improved, thereby making it possible to stabilize the upper cover assembly 20 in the upright state and reduce the occurrence of tipping over of the upper cover assembly 20. In this embodiment, the limiting protrusion 51 is provided on the hinge assembly 30, and the limiting groove 52 is provided on the base assembly 10. The structure is simple and easy to process. Of course, in other embodiments, the limiting protrusion may be provided on the base assembly, and the limiting groove may be provided on the hinge assembly.

[0061] Furthe, the limiting groove 52 is located in a bottom wall of the lower hinge groove 13, and the limiting protrusion 51 protrudes from an end of the hinge assembly 30 located within the limiting groove 52. In this way, moving the hinge assembly 30 downwards can cause the limiting protrusion 51 to extend into the limiting groove 52, while moving the hinge assembly 30 upwards can cause the limiting protrusion 51 to disengage from the limiting groove 52. Therefore, when the hinge assembly 30 moves to the upper end of the lower hinge groove 13, it can rotate relative to the base assembly 10. From this, it can be seen that when the frying-baking machine is in the first open state, the hinge assembly 30 moves downward to the bottom of the lower hinge groove 13, and at this time, the limiting protrusion 51 extends into the limiting groove 52, thereby keeping the upper cover assembly 20 in the first open state. When it’s necessary to further open the frying-baking machine, one only needs to lift the upper cover assembly 20 upwards to move the hinge assembly 30 upwards and disengage the limiting protrusion 51 from the limiting groove 52. When the hinge assembly 30 moves to the upper end of the lower hinge groove 13, the upper cover assembly 20 can be rotated and flipped to the second open state, which is very convenient to operate.

[0062] Further, please refer to Figures 7 and 8, the limiting groove 52 is located on the side of the lower hinge groove 13 away from the center of the base assembly 10. Correspondingly, when the frying-baking machine is in the first open state, the limiting protrusion 51 is located on the side of the lower end of the hinge assembly 30 away from the center of the base assembly 10. Therefore, the limiting protrusion 51 is located on the side of the lower rotary shaft 60 away from the center of the base assembly 10, the side wall of the limiting protrusion 51 (i.e., the abutting surface 511 described below) can thus be pressed more tightly against the side wall (i.e., the stop surface 521 described below) of the limiting groove 52 near the center of the base assembly 10, thereby better preventing the hinge assembly 30 from rotating in the direction away from the center of the base assembly 10 and ensuring the stability of the hinge assembly 30 in the upright state. It can be understood that the "center of the base assembly 10" used herein refers to the central area of the base assembly 10, which serves only as a reference frame to define the positional relationship of related elements, and does not indicate whether the base assembly 10 is a regular shaped or symmetrical structure. Please refer to Figures 8, 12, 13, and 15. The limiting protrusion 51 is equipped with an abutting surface 511 , and the side wall of the limiting groove 52 is equipped with a stop surface 521 . When the frying-baking machine is in the first open state, the hinge assembly 30 is in an upright state, and the abutting surface 511 abuts against the stop surface 521 . In this way, by the cooperation between the abutting surface 511 and the stop surface 521 , the rotation of the hinge assembly 30 can be effectively restricted.

[0063] In one embodiment, the abutting surface 511 tilts upward when the hinge assembly 30 is in an upright state. It can be understood that due to the rotation of the hinge assembly 30 with respect to the base assembly 10, the orientation of the abutting surface 511 will change in different states. What is defined here is the orientation of the abutting surface 511 when the hinge assembly 30 is in an upright state. Regarding the expression "tilting upward", as shown in Figure 17, for a solid structure, the inclined surface M is a surface tilting upward, and the inclined surface N is a surface tilting downward. The abutting surface 511 in the present application is the same as the inclined surface M and belongs to surfaces tilting upward. In this embodiment, since the abutting surface 511 tilts upward when the hinge assembly 30 is in an upright state, the force of the abutting surface 511 against the stop surface 521 is greater in the first open state. Thus, the limiting protrusion 51 can be more tightly engaged with the limiting groove 52, thereby increasing the strength of the connection between the hinge assembly 30 and the base assembly 10, which is more conducive to maintaining the upper cover assembly 20 in an upright state. Of course, in other embodiments, the abutting surface 511 can also extend vertically when the hinge assembly 30 is in an upright state.

[0064] It can be understood that the inclination angle of the stop surface 521 is consistent with that of the abutting surface 511 , ensuring a large contact area between the abutting surface 511 and the stop surface 521 , thereby ensuring a reliable fit between the hinge assembly 30 and the base assembly 10.

[0065] Further, as shown in Figure 13, the angle a between the abutting surface 511 and the horizontal plane when the hinge assembly 30 is in an upright state is 82 °~87 °. In this way, it can be ensured that the limiting protrusion 51 is easy to extend into and disengage from the limiting groove 52, and the limiting protrusion 51 is tightly fastened after extending into the limiting groove 52, so that the strength of the connection between the hinge assembly 30 and the base assembly 10 is high. In some specific embodiments, a can be 82 °, 83 °, 84 °, 85 °, 86 °, 87 °, or any other value within the range of 82 ° to 87 °.

[0066] The hinge assembly 30 is rotatably connected to the base assembly 10 through the lower rotary shaft 60. When the hinge assembly 30 moves to the upper end of the lower hinge groove 13, it can rotate around the axis of the lower rotary shaft 60. Please refer to Figure 13. The vertical plane passing through the axis of the lower rotary shaft 60 when the hinge assembly 30 is in an upright state is defined as a shaft center plane, and the minimum distance D1 between the shaft center plane and the abutting surface 511 is 0-2mm. The larger the minimum distance between the abutting surface 511 and the shaft center plane, the easier it is for the hinge assembly 30 to rotate around the lower rotary shaft 60, and thus the easier it is for the upper cover assembly 20 to tip over. In this embodiment, the minimum distance D1 between the shaft center plane and the abutting surface 511 is 0-2mm, which makes it difficult for the hinge assembly 30 to rotate around the lower rotary shaft 60, so that the hinge assembly 30 can be stably kept in an upright state and provide effective support for the upper cover assembly 20, thereby preventing the upper cover assembly 20 from tipping over. In some specific embodiments, D1 may be 0mm, 0.1 mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1 mm, 1.1 mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, or any other value within the range of 0-2mm.

[0067] Please refer to Figures 8 and 13. The side wall of the hinge assembly 30 near the center of the base assembly 10 when the hinge assembly 30 is in an upright state is defined as the first side wall 31 , and the side wall of the hinge assembly 30 away from the center of the base assembly 10 when the hinge assembly 30 is in an upright state is defined as the second side wall 32. Please refer to Figure 13. In one embodiment, the abutting surface 511 is located on the side of the shaft center plane 610 near the second side wall 32; But it’s not limited to this. Please refer to Figure 14. In another embodiment, the abutting surface 511 is located on the side of the shaft center plane 610 near the first side wall 31. In yet another embodiment, a portion of the abutting surface 511 is located on the side of the shaft center plane 610 near the first side wall 31 , and the other portion is located on the side of the shaft center plane 610 near the second side wall 32. It is preferred that the center of the abutting surface 511 is located on the shaft center plane 610. In still another embodiment, the abutting surface 511 coincides with the shaft center plane 610, in other words, the abutting surface 511 is a vertical plane extending in the vertical direction.

[0068] Further, the minimum thickness of the limiting protrusion 51 is D, D>4mm. In this way, it is ensured that the limiting protrusion 51 has sufficient structural strength to prevent the force of the limiting protrusion 51 against the stop surface 521 from causing the limiting protrusion 51 to break. Further, the length L of the protrusion of the limiting protrusion 51 relative to the end of the hinge assembly 30 is 3mm~10mm. In this way, it is ensured that the limiting protrusion 51 and the limiting groove 52 have sufficient fitting length, thereby ensuring the effective antirotation limiting of the limiting groove 52 on the limiting protrusion 51 , ensuring that the hinge assembly 30 does not rotate relative to the base assembly 10, and in turn ensuring the stability of the frying-baking machine when it is in the first open state. In some specific embodiments, L can be 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, or any other value within the range of 3mm to 10mm.

[0069] In this embodiment, the limiting protrusion 51 is integrally formed on the outer surface of the hinge assembly 30, with a simple structure and high structural strength. However, it is not limited to this. In other implementations, the limiting protrusion 51 and the hinge assembly 30 can also be distinct structures. The limiting protrusion 51 can be fixed to the hinge assembly 30 by bonding, welding, or fastening, which is not limited by the present application.

[0070] Further, please refer to Figures 8 and 10. The side wall of the lower hinge groove 13 is provided with an avoiding groove 132 for accommodating the limiting protrusion 51 . When the hinge assembly 30 moves to the upper end of the lower hinge groove 13, the limiting protrusion 51 can be turned into the avoiding groove 132, so that the hinge assembly 30 can rotate at the upper end of the lower hinge groove 13. When the frying-baking machine is in the second open state, the hinge assembly 30 is in a lying-down state, and the limiting protrusion 51 is accommodated in the avoiding groove 132. In this way, when the upper cover assembly 20 is lifted upwards such that the hinge assembly 30 moves to the upper end of the lower hinge groove 13, the limiting protrusion 51 disengages from the limiting groove 52. At this time, the upper cover assembly 20 can be rotated in the direction of further opening, thereby enabling the upper cover assembly 20 to rotate to the second open state. It can be seen that providing the avoiding groove 132 can achieve normal opening of the frying-baking machine.

[0071] Please refer to Figures 9 and 10. Further, the avoiding groove 132 is located on the side of the lower hinge groove 13 near the center of the base assembly 10, and extends towards the center of the base assembly 10. In this way, the position of the avoiding groove 132 is adapted to the position of the limiting protrusion 51 , so that when the frying-baking machine is in the second open state, the limiting protrusion 51 is just accommodated in the avoiding groove 132.

[0072] Please refer to Figures 8, 10, and 11. In one embodiment, the lower baking tray 12 is fixedly connected to the lower shell 11 and cooperates with it to form the lower hinge groove 13 and the avoiding groove 132. When the frying-baking machine is in the second open state, the limiting protrusion 51 abuts against the lower baking tray 12. In this way, it is easy to install the hinge assembly 30 in the lower hinge groove 13, and when the frying-baking machine is in the second open state, the lower baking tray 12 can block the limiting protrusion 51 , so that the hinge assembly 30 can be in a lying-down state. In the lying-down state, only the upper surface of the hinge assembly 30 is exposed, making it very easy to clean even if it is stained with oil fumes during use.

[0073] Please refer to Figures 11 , 15, and 16. In one embodiment, the lower shell 11 is provided with a first groove 111 , and the side wall of the first groove 111 is provided with a first hole 112 that opens upward. The lower baking tray 12 is provided with a second groove 121 , and the side wall of the second groove 121 is provided with a second hole 122 that opens downward. The lower baking tray 12 is fixedly connected to the lower shell 11 , and the first groove 111 and the second groove 121 cooperate to form the lower hinge groove 13. The first hole 112 and the second hole 122 cooperate to form the movable hole 14. In this way, during assembly, the hinge assembly 30 can be first placed in the first groove 111 , and the lower rotary shaft 60 can be placed in the first hole 112. Then, the lower baking tray 12 can be placed on the lower shell 11 with the opening of the first groove 111 aligned with the opening of the second groove 121 , and the opening of the first hole 112 aligned with the opening of the second hole 122. Finally, the lower baking tray 12 and the lower shell

[0074] 11 are connected together, so that the hinge assembly 30 is mounted on the base assembly 10. The lower baking tray 12 and the lower shell 11 can be connected by screws, making installation and disassembly very convenient. This embodiment combines the first groove 111 provided by the lower shell 11 and the second groove 121 provided by the lower baking tray 12 to form the lower hinge groove 13, and combines the first hole 112 provided by the lower shell 11 and the second hole 122 provided by the lower baking tray

[0075] 12 to form the movable hole 14, making it easy to install the hinge assembly 30. But it’s not limited to this. In other embodiments, the lower hinge groove 13 can be separately formed in the lower shell 11 , for example, the lower shell 11 can be provided as a split type structure, as long as the hinge assembly 30 can be installed in the lower hinge groove 13. In addition, the avoiding groove 132 and the movable hole 14 can also be separately formed in the lower shell 11 , and the lower shell 11 can also be provided as a split type structure, as long as the hinge assembly 30 and the lower rotary shaft 60 can be installed in the lower hinge groove 13 and the movable hole 14, respectively.

[0076] The various technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered within the scope of this specification. The above embodiments only express several modes of realization of the present application, the description of which is specific and detailed, but should not be understood as limiting the scope of the patent application. It should be pointed out that for those with ordinary skills in the art, several modifications and improvements can be made without departing from the concept of the present application, which all fall within the scope of protection of the present application. Therefore, the scope of patent protection of the present application shall be subject to the appended claims.

Claims

Claims1. A frying-baking machine characterized in that it comprises: a base assembly (10), an upper cover assembly (20), and a hinge assembly (30), wherein the upper cover assembly (20) is rotatably connected to the base assembly (10) through the hinge assembly (30); wherein the hinge assembly (30) is capable of moving up and down relative to the base assembly (10), and the frying-baking machine has a first open state in which the upper cover assembly (20) is upright relative to the base assembly (10); and wherein a limiting assembly (50) is provided between the base assembly (10) and the hinge assembly (30) and comprises a limiting protrusion (51) and a limiting groove (52), one of the limiting protrusion (51) and the limiting groove (52) being provided on the hinge assembly (30), and the other being provided on the base assembly (10), when the frying-baking machine is in the first open state, the limiting protrusion (51) and an inner wall of the limiting groove (52) abut against each other so as to limit a rotation of the hinge assembly (30) relative to the base assembly (10).

2. The frying-baking machine according to claim 1 , wherein the base assembly (10) is provided with a lower hinge groove (13) in which the hinge assembly (30) is arranged to be movable up and down, the limiting groove (52) is provided in a bottom wall of the lower hinge groove (13), and the limiting protrusion (51) protrudes from an end of the hinge assembly (30) located in the limiting groove (52).

3. The frying-baking machine according to claim 2, wherein the limiting groove (52) is located on a side of the lower hinge groove (13) away from a center of the base assembly (10).

4. The frying-baking machine according to any one of preceding claims, wherein the limiting protrusion (51) is provided with an abutting surface (511), and a side wall of the limiting groove (52) is provided with a stop surface (521), wherein when the frying-baking machine is in the first open state, the hinge assembly (30) is in an upright state, and the abutting surface (511) abuts against the stop surface (521).

5. The frying-baking machine according to claim 4, wherein the abutting surface (511) tilts upward when the hinge assembly (30) is in the upright state.

6. The frying-baking machine according to claim 5, wherein an angle a between the abutting surface (511) and a horizontal plane when the hinge assembly (30) is in the upright state is 82 °~87 °.

7. The frying-baking machine according to any one of claims 4 to 6, wherein the hinge assembly (30) is rotatably connected to the base assembly (10) through a lower rotary shaft (60), and when the hinge assembly (30) moves to an upper end of the lower hinge groove (13), it is able to rotate around an axis of the lower rotary shaft (60), wherein a vertical plane passing through the axis of the lower rotary shaft (60) when the hinge assembly (30) is in the upright state is defined as a shaft center plane (610), and a minimum distance D1 between the shaft center plane (610) and the abutting surface (511) is 0-2mm.

8. The frying-baking machine according to claim 7, wherein a side wall of the hinge assembly (30) near a center of the base assembly (10) when the hinge assembly (30) is in the upright state is defined as a first side wall (31), and a side wall of the hinge assembly (30) away from the center of the base assembly (10) when the hinge assembly (30) is in the upright state is defined as a second side wall (32), wherein the abutting surface (511 ) is located on a side of the shaft center plane (610) near the second side wall (32); or the abutting surface (511) is located on a side of the shaft center plane (610) near the first side wall (31); or a part of the abutting surface (511) is located on the side of the shaft center plane (610) near the first side wall (31), and the other part is located on the side of the shaft center plane (610) near the second side wall (32); or the abutting surface (511) coincides with the shaft center plane (610).

9. The frying-baking machine according to any one of preceding claims, wherein the limiting protrusion (51) has a minimum thickness D, D>4mmo10. The frying-baking machine according to claim 2 or 3, wherein the limiting protrusion (51) protrudes from an end of the hinge assembly (30) by a length L that is 3mm~10mm.

11. The frying-baking machine according to claim 2, 3 or 10, wherein a side wall of thelower hinge groove (13) is provided with an avoiding groove (132) for accommodating the limiting protrusion (51), and when the hinge assembly (30) moves to an upper end of the lower hinge groove (13), the limiting protrusion (51) can be turned into the avoiding groove (132) to enable the hinge assembly (30) rotate at the upper end of the lower hinge groove (13), wherein the frying-baking machine further has a second open state in which the upper cover assembly (20) is flipped to a side of the base assembly (10), and when the frying-baking machine is in the second open state, the hinge assembly (30) is in a lying-down state, and the limiting protrusion (51) is accommodated in the avoiding groove (132).

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