Food baking appliance

Abstract

The food baking appliance comprises a cooking cavity with an opening in the side portion, a door body, a grill and a driving mechanism arranged on the outer side of the cooking cavity, the door body is rotationally arranged on the side portion of the cooking cavity and used for opening and closing the opening, and the grill is rotationally arranged in the cooking cavity and used for opening and closing the opening. The gridiron comprises a gridiron body, a driving rotating shaft and a driven rotating shaft, the driving rotating shaft and the driven rotating shaft are connected to the two ends of the gridiron body, the driving rotating shaft is connected with the driving mechanism, a shaft hole and a conical guide face are arranged on the side, facing the opening, of the door body, and the conical guide face radially expands and extends from the edge of the shaft hole and guides the driven rotating shaft to be disengaged or inserted into the shaft hole when the door body is opened or closed. According to the food baking appliance, the gridiron is assembled in an inserting mode, the gridiron is convenient to assemble, disassemble and clean, on the basis, the door body is provided with the conical guide face, the driven rotating shaft can be guided to be disengaged from and inserted into the shaft hole, and therefore the door body can be opened and closed smoothly, operation efficiency can be improved easily, and the fast use requirement of a user is met.

Description

Technical Field

[0001] The utility model relates to the field of baking equipment, in particular to a food baking utensil. Background Art

[0002] In traditional air fryers, ovens and other equipment, the baking tray or grill in the cooking chamber is a fixed structure, and the food remains stationary during the heating process, which is not conducive to uniform heating of all parts of the food and affects the color and taste of the food.

[0003] To address the aforementioned issues, some existing food heating devices incorporate a rotatable grill pan or grill that rotates the food, thereby improving the uniformity of food heating. For example, in an oven with a rotatable grill, the rear end of the grill is driven by a motor, and the front end of the grill is rotatably connected to a door cover at the front of the oven to form a support. The door cover is provided with a cylindrical shaft hole for the front shaft of the grill. When the door cover is not closed, the grill is supported only by the rear end. Under the influence of the weight of the grill, the front shaft of the grill is prone to drooping, causing the front shaft of the grill to deviate from the central axis of the cylindrical shaft hole during the closing of the door cover, making it difficult to insert the front shaft into the shaft hole. This may result in the door cover being unable to close or the front shaft of the grill being severely worn against the bottom wall of the shaft hole, which is detrimental to the normal use of the product.

[0004] There are also some devices, such as patent CN208541162U, which discloses a vertical rotating barbecue oven. The grill is set vertically and is hoisted by a motor above. Although it does not involve the problem of matching the grill with the door cover for installation, there is a problem of poor stability of the grill rotation. Moreover, when the grill rotates around the vertical axis, the lower surface of the food is always far away from the heat source above, resulting in more heating on the upper surface of the food and less heating on the lower surface, resulting in uneven heating of the food, which will eventually affect the color and taste of the food. Utility Model Content

[0005] In order to solve the technical problem in the prior art that when the door cover is provided with a cylindrical shaft hole, the rotating shaft of the grill and the shaft hole do not fit smoothly, resulting in the door cover not opening and closing smoothly, the utility model provides a food baking utensil, which aims to optimize the fitting structure of the door body to promote smooth operation of the door body and enhance the user experience.

[0006] The utility model discloses a food grilling utensil, comprising a cooking cavity with an opening on the side, a door body, a grill and a driving mechanism arranged on the outside of the cooking cavity, wherein the door body is rotatably arranged on the side of the cooking cavity and is used to open and close the opening, and the grill is rotatably arranged in the cooking cavity, the grill comprising a frame body, a driving shaft and a driven shaft connected to both ends of the frame body, the driving shaft is connected to the driving mechanism, and the door body is provided with an axial hole and a conical guide surface radially extending from the edge of the axial hole on the side facing the opening, and the conical guide surface is arranged to guide the driven shaft to disengage or insert into the axial hole when the door body is opened or closed.

[0007] The food baking utensil of the present invention also has the following additional technical features:

[0008] The distance from the highest point of the tapered guide surface to the central axis of the shaft hole is smaller than the distance from the lowest point of the tapered guide surface to the central axis of the shaft hole.

[0009] A shaft sleeve is provided on the side of the door body facing the opening, an axis hole and a tapered guide surface are formed in the shaft sleeve, and the shaft sleeve and the door body are an integral structure or a split structure.

[0010] The shaft sleeve and the door body are separate structures, and the shaft sleeve is a heat-insulating shaft sleeve.

[0011] The end of the driven shaft is configured to be conical or have an arc-shaped end surface.

[0012] The opening angle of the conical guide surface is θ, 45°≤θ≤170°, and the radial dimension of the opening of the conical guide surface is not less than 5 mm.

[0013] The driven shaft is provided with a first shoulder, which is configured to abut against the connection between the shaft hole and the tapered guide surface when the driven shaft is inserted into the shaft hole; and / or the driving shaft is provided with a second shoulder, the driving mechanism includes a motor and a transmission member connecting the motor and the driving shaft, and the second shoulder is configured to abut against the limiting portion of the transmission member when the driving shaft is inserted into the transmission member.

[0014] The shaft hole and the tapered guide surface are connected through an arc transition.

[0015] The driving mechanism includes a motor and a transmission member connected to the motor, one end of the transmission member extends into the cooking cavity and is fixedly connected to the driving shaft, and the length of the driving shaft inserted into the transmission member is greater than the length of the driven shaft inserted into the shaft hole.

[0016] A rotatable transmission shaft is provided on the side wall of the cooking cavity. The driving mechanism includes a motor and a thermal insulation coupling. One end of the transmission shaft is fixedly connected to the driving shaft, and the other end is transmission-connected to the output shaft of the motor through the thermal insulation coupling.

[0017] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0018] 1. The food grilling utensil of the present invention adopts a plug-in assembly method for the grill, which is convenient for installation, disassembly and cleaning of the grill. On this basis, the door body is provided with a tapered guide surface, which can guide the driven shaft to disengage and insert into the shaft hole, thereby promoting smooth opening and closing of the door body, which is conducive to improving operating efficiency and meeting the user's needs for quick use.

[0019] 2. As a preferred embodiment, the distance from the highest point of the tapered guide surface to the central axis of the shaft hole is less than the distance from the lowest point of the tapered guide surface to the central axis of the shaft hole. When the door is open, only the rear end of the grill is fixed, while the front end is cantilevered. Under the influence of gravity, the driven shaft of the grill is prone to sagging to a certain extent. By extending the size of the tapered guide surface below the shaft hole, the driven shaft can slide along the tapered guide surface into the shaft hole when the door is closed, thereby ensuring smooth door closure.

[0020] 3. As a preferred embodiment, a sleeve is provided on the side of the door body facing the opening, wherein the sleeve has an axial hole and a tapered guide surface formed therein. The sleeve and the door body may be integral or separate structures. When the sleeve and the door body are integral, the door body fabrication process is simplified and costs are reduced. When the sleeve and the door body are separate structures, the materials of the sleeve and the door body can be flexibly selected according to actual needs, improving the performance of the sleeve and facilitating sleeve replacement.

[0021] As a preferred embodiment of this embodiment, the sleeve and the door body are separate structures, and the sleeve is a heat-insulating sleeve. The use of the heat-insulating sleeve improves the heat insulation performance of the sleeve, which can prevent the heat from the grill from transferring to the door body, preventing the door outer surface from being overheated and causing burns to the user.

[0022] 4. As a preferred embodiment, the driven shaft has a tapered end or an arc-shaped end surface. The tapered shape facilitates the inclined surface formed by the tapered shape to slide along the tapered guide surface for guidance, thereby improving efficiency and reducing wear between the driven shaft and the tapered guide surface, thereby extending the service life of the structural component. When the driven shaft has an arc-shaped end surface, the contact between the arc-shaped end surface and the tapered guide surface reduces wear between the two, thereby extending the service life of the structural component.

[0023] 5. As a preferred embodiment, the opening angle of the tapered guide surface is θ, 45°≤θ≤170°, and the radial dimension of the opening of the tapered guide surface is not less than 5 mm. By defining the relevant parameters of the tapered guide surface, it can be ensured that the tapered guide surface effectively guides the driven shaft, thereby ensuring smooth and reliable opening and closing of the door.

[0024] 6. As a preferred embodiment, the driven shaft is provided with a first shoulder, which is configured to abut the connection between the shaft hole and the tapered guide surface when the driven shaft is fully inserted into the shaft hole. The first shoulder limits the length of the driven shaft's insertion into the shaft hole, providing a fixed position and preventing axial movement during grill rotation, thereby improving operational stability.

[0025] The drive shaft is provided with a second shoulder. The drive mechanism includes a motor and a transmission member connecting the motor and the drive shaft. The second shoulder is configured to abut against a stopper on the transmission member when the drive shaft is fully inserted into the transmission member. This second shoulder limits the insertion length of the drive shaft into the transmission member, and while providing a stopper, it also prevents axial movement during grill rotation, thereby improving operational stability.

[0026] 7. As a preferred embodiment, the shaft hole and the tapered guide surface are connected by a circular arc transition. A smooth transition is formed at the connection between the shaft hole and the tapered guide surface, which facilitates the driven shaft to be introduced into and out of the shaft hole via the circular arc, making the guidance smoother and helping to reduce wear.

[0027] 8. In a preferred embodiment, the drive mechanism includes a motor and a transmission member connected to the motor. One end of the transmission member extends into the cooking cavity and is fixedly connected to the drive shaft. The length of the drive shaft inserted into the transmission member is greater than the length of the driven shaft inserted into the shaft hole. The longer the fit between the drive shaft and the transmission member, the more stable the support provided to the rear end of the grill. This reduces the amount of sagging that occurs when the front end of the grill is suspended in the air, thereby facilitating faster insertion of the driven shaft into the shaft hole. Furthermore, once the driven shaft is inserted into the shaft hole, its deviation from the central axis of the shaft hole is minimized, thereby reducing friction between the driven shaft and the inner wall of the shaft hole, thereby improving operational stability and reducing noise.

[0028] 9. In a preferred embodiment, a rotatable transmission shaft is provided on the side wall of the cooking chamber. The drive mechanism includes a motor and a thermally insulated coupling. One end of the transmission shaft is fixedly connected to the drive shaft, and the other end is in transmission connection with the motor's output shaft via the thermally insulated coupling. The thermally insulated coupling, while ensuring efficient transmission, prevents the high temperature of the grill from being transferred to the motor, causing a significant temperature rise and impacting its performance and lifespan. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 This is a schematic cross-sectional view of a food baking appliance according to one embodiment of the present application, wherein the door is in a closed state.

[0031] Figure 2 for Figure 1 Schematic diagram of a food baking appliance with a door in an open state.

[0032] Figure 3 for Figure 1 Schematic diagram of a food baking appliance door in the process of rotation.

[0033] Figure 4 This is a schematic diagram of the separate arrangement of the shaft sleeve and the door body in one embodiment of the present application.

[0034] Figure 5 This is a schematic diagram of the opening size of the tapered guide surface under one embodiment of the present application.

[0035] Figure 6 This is a schematic structural diagram of a grill according to one embodiment of the present application.

[0036] Figure 7 This is a schematic diagram of the cooperation between the driven rotating shaft and the shaft hole in one embodiment of the present application.

[0037] Figure 8 This is a schematic diagram of the cooperation between the driving shaft and the transmission member under one embodiment of the present application.

[0038] Figure 9 This is a schematic front view of a tapered guide surface according to one embodiment of the present application.

[0039] Figure 10 for Figure 9 Schematic side view of the tapered guide surface.

[0040] Figure 11 This is an exploded schematic diagram of the drive mechanism, transmission shaft and other related structures in one embodiment of the present application.

[0041] Reference numerals:

[0042] 10. Cooking cavity; 101. Opening; 11. Door body; 111. Outer door panel; 112. Inner door panel; 12. Grill; 121. Grill body; 122. Driving shaft; 123. Driven shaft; 1231. First inclined surface; 1232. Second inclined surface; 13. Driving mechanism; 131. Motor; 132. Transmission member; 1321. Column hole; 1322. Limiting portion; 14. Shaft hole; 15. Conical guide surface; 16. Bushing; 17. First shoulder; 18. Second shoulder; 19. Transmission shaft; 20. Thermal insulation coupling. DETAILED DESCRIPTION

[0043] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0044] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0045] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0047] Furthermore, 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 being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0048] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood broadly. For example, they can refer to fixed connections, removable connections, or integration; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or an interaction between two components. However, the phrase "direct connection" indicates that the two connected entities are not connected through a transition structure, but are connected solely through a connecting structure to form a single entity. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0049] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0050] like Figures 1 to 11 As shown, the present application provides a food baking appliance, comprising a cooking cavity 10 with an opening 101 on the side, a door body 11, a grill 12 and a driving mechanism 13 arranged on the outside of the cooking cavity 10, the door body 11 is rotatably arranged on the side of the cooking cavity 10 and is used to open and close the opening 101, the grill 12 is rotatably arranged in the cooking cavity 10, the grill 12 comprises a frame body 121, a driving shaft 122 and a driven shaft 123 connected to both ends of the frame body 121, the driving shaft 122 is connected to the driving mechanism 13, and the door body 11 is provided with an axis hole 14 and a conical guide surface 15 radially extending from the edge of the axis hole 14 on the side facing the opening 101, the conical guide surface 15 is arranged to guide the driven shaft 123 to disengage or insert into the axis hole 14 when the door body 11 is opened or closed.

[0051] The food grilling utensil of the present application adopts a plug-in assembly method for the grill 12, which is convenient for the installation, disassembly and cleaning of the grill 12. On this basis, the door body 11 is provided with a conical guide surface 15, which can guide the driven rotating shaft 123 to disengage and insert into the shaft hole 14, thereby promoting the smooth opening and closing of the door body 11, which is beneficial to improving the operating efficiency and meeting the user's needs for quick use.

[0052] Specifically, the grill 12 is mounted horizontally and can rotate about a horizontal axis. With a heating element positioned above the grill 12, the upper and lower surfaces of the food on the grill 12 receive sufficient heat during its rotation, thereby improving the uniformity of the food heating and preventing poor browning of the food that affects the overall taste. A drive mechanism 13 drives the grill 12 horizontally. During its rotation, the front and rear ends of the grill 12 are supported, improving its operational stability. Compared to conventional methods of vertically suspended rotation of the grill 12, the grill 12 of the present application is more reliable and safer to use. During its rotation, the driving shaft 122 is relatively fixed to the connecting member of the driving mechanism 13, ensuring that the rear end of the grill 12 drives the front end of the grill 12. The driven shaft 123 is loosely fitted with the shaft hole 14, allowing it to rotate freely and ensuring smooth rotation of the entire grill 12. The driving shaft 122 is detachably connected to the driving mechanism 13, so the grill 12 can be removed and cleaned after the machine is used, thereby improving the cleaning effect of the grill 12. The conical guide surface 15 is in a bell-mouth shape. Under the guidance of the conical guide surface 15, the difficulty of the driven shaft 123 directly matching the shaft hole 14 is reduced, making it easier and more efficient for the user to operate the door body 11. The door body 11 is rotated, and it can be Figures 1 to 3 The door body 11 rotates around a horizontal axis so that the opening 101 is closed when it rotates upward and opens the opening 101 when it rotates downward. The door body 11 can also be rotated around a vertical axis on one side of the opening 101 to form a side-opening door. The choice is based on actual needs and is not limited in this application.

[0053] As a preferred embodiment, the distance between the highest point of the tapered guide surface 15 and the central axis of the shaft hole 14 is less than the distance between the lowest point of the tapered guide surface 15 and the central axis of the shaft hole 14. When the door 11 is open, the grill 12 is fixed at only the rear end, with the front end cantilevered. Under the action of gravity, the driven shaft 123 of the grill 12 is prone to sagging to a certain extent. By extending the size of the tapered guide surface 15 below the shaft hole 14, the driven shaft 123 can slide along the tapered guide surface 15 into the shaft hole 14 when the door 11 is closed, thereby ensuring smooth closing of the door 11.

[0054] like Figure 9 and Figure 10 As shown, in this embodiment, the conical guide surface 15 is not symmetrical in the upper and lower parts, and the distance L1 from the highest point of the conical guide surface 15 to the central axis of the shaft hole 14 is smaller than the distance L2 from the lowest point of the conical guide surface 15 to the central axis of the shaft hole 14. L2 satisfies the requirement that the conical guide surface 15 on the lower side can effectively guide the driven rotating shaft 123 to slide into the shaft hole 14 during the closing process of the door body 11.

[0055] It is understandable that in other embodiments, the conical guide surface 15 may also adopt a symmetrical structure. For example, the conical guide surface 15 is symmetrical about the central axis of the shaft hole 14. In this case, the circle formed by the conical guide surface 15 is concentric with the circle where the shaft hole 14 is located.

[0056] As a preferred embodiment, a sleeve 16 is provided on the side of the door body 11 facing the opening 101. The sleeve 16 has an axial hole 14 and a tapered guide surface 15 formed therein. The sleeve 16 and the door body 11 may be integral or separate structures. When the sleeve 16 and the door body 11 are integral, the processing of the door body 11 structure can be simplified and the cost can be reduced. When the sleeve 16 and the door body 11 are separate structures, the materials of the sleeve 16 and the door body 11 can be flexibly selected according to actual needs, the performance of the sleeve 16 can be improved, and the replacement of the sleeve 16 can be facilitated.

[0057] Specifically, such as Figure 4 As shown, the door body 11 includes, for example, an outer door panel 111 and an inner door panel 112 that are spaced apart, and the sleeve 16 is provided on the inner door panel 112. When the sleeve 16 and the inner door panel 112 are an integral structure, the inner door panel 112 is partially recessed toward the outer door panel 111 to form the sleeve 16; when the sleeve 16 and the inner door panel 112 are a separate structure, the inner door panel 112 may be partially recessed toward the outer door panel 111 to form a groove, and the sleeve 16 is embedded in the groove. The sleeve 16 can be fixed in the groove, for example, by screws.

[0058] As a preferred embodiment of this embodiment, sleeve 16 is a separate structure from door body 11, and sleeve 16 is a thermally insulating sleeve. This enhances sleeve 16's thermal insulation, preventing heat from grill 12 from transferring to door body 11, thus preventing excessive heat on the outer surface of door body 11 and potentially scalding the user. In this embodiment, sleeve 16 has a lower thermal conductivity than inner door panel 112, reducing heat transfer to inner door panel 112 and thus less heat reaching outer door panel 111. This prevents users from being burned by high temperatures when touching outer door panel 111.

[0059] In other embodiments, the separate arrangement of the sleeve 16 and the door body 11 is also beneficial for adopting a sleeve 16 with a certain degree of flexibility, so as to reduce the wear between the driven shaft 123 and the sleeve 16 or avoid large friction between the two and generating abnormal noise.

[0060] As a preferred embodiment, the end of the driven shaft 123 is configured to be tapered. Figure 6 and Figure 7As shown, the conical structure has an inclined surface. For example, the end of the driven shaft 123 includes a first inclined surface 1231 inclined upward and a second inclined surface 1232 inclined downward. The first inclined surface 1231 is approximately parallel to the upper conical guide surface 15, and the second inclined surface 1232 is approximately parallel to the lower conical guide surface 15. This is conducive to the second inclined surface 1232 sliding along the lower conical guide surface 15 to allow the driven shaft 123 to be introduced into and out of the shaft hole 14, making the door body 11 open and close more smoothly.

[0061] In other embodiments, the end surface of the driven rotating shaft 123 is arc-shaped, and the contact between the arc-shaped end surface and the tapered guide surface 15 can reduce the wear between the two, which is beneficial to extending the service life of the structural component.

[0062] As a preferred embodiment, the opening angle of the tapered guide surface 15 is θ, 45°≤θ≤170°, and the radial dimension L0 of the opening of the tapered guide surface 15 is not less than 5 mm. Figure 5 As shown, by limiting the relevant parameters of the tapered guide surface 15 , it is possible to ensure that the tapered guide surface 15 effectively guides the driven shaft 123 , thereby ensuring the reliability of smooth opening and closing of the door body 11 .

[0063] As a preferred embodiment, the driven shaft 123 is provided with a first shaft shoulder 17, which is arranged to abut against the connection between the shaft hole 14 and the tapered guide surface 15 when the driven shaft 123 is inserted into the shaft hole 14. Figure 7 As shown, first shoulder 17 limits the length of driven shaft 123 inserted into shaft hole 14. This installation limiter prevents axial movement of grill 12 during rotation, thereby improving operational stability. First shoulder 17 may be, for example, a stopper step. The outer diameter of the area where first shoulder 17 is located is larger than the outer diameter of driven shaft 123 inserted into shaft hole 14, ensuring that only the front portion of first shoulder 17 can be inserted into shaft hole 14. The depth of insertion of driven shaft 123 into shaft hole 14 is, for example, L3.

[0064] Similarly, in one embodiment, the driving shaft 122 is provided with a second shoulder 18, the driving mechanism 13 includes a motor 131 and a transmission member 132 connecting the motor 131 and the driving shaft 122, and the second shoulder 18 is configured to abut against a limit portion 1322 of the transmission member 132 when the driving shaft 122 is inserted into the transmission member 132. Figure 8As shown, the second shoulder 18 limits the length of the drive shaft 122 inserted into the transmission member 132. This installation limiter prevents axial movement during the rotation of the grill 12, thereby improving operational stability. The second shoulder 18 can be, for example, a stopper step. The outer diameter of the area where the second shoulder 18 is located is larger than the outer diameter of the drive shaft 122 inserted into the transmission member 132. The insertion depth of the drive shaft 122 into the transmission member 132 is, for example, L4. The transmission member 132 includes a post hole 1321 for receiving the drive shaft 122. The stopper 1322 can be formed, for example, by radially extending from the end of the post hole 1321.

[0065] As a preferred embodiment, the shaft hole 14 and the tapered guide surface 15 are connected by a circular arc transition. A smooth transition is formed at the connection between the shaft hole 14 and the tapered guide surface 15, which facilitates the driven shaft 123 to be introduced into and out of the shaft hole 14 via the circular arc, making the guidance smoother and helping to reduce wear.

[0066] As a preferred embodiment, the driving mechanism 13 includes a motor 131 and a transmission member 132 connected to the motor 131, one end of the transmission member 132 extends into the cooking cavity 10 and is fixedly connected to the driving shaft 122, and the length of the driving shaft 122 inserted into the transmission member 132 is greater than the length of the driven shaft 123 inserted into the shaft hole 14.

[0067] like Figure 7 and Figure 8 As shown, the length of the driven shaft 123 inserted into the shaft hole 14 is L3, and the length of the driving shaft 122 inserted into the transmission member 132 is L4, where L3 is less than L4. The longer the length between the driving shaft 122 and the transmission member 132, the more stable the support for the rear end of the grill 12 is. This reduces the amount of sagging that occurs when the front end of the grill 12 is suspended, thereby facilitating faster insertion of the driven shaft 123 into the shaft hole 14. Furthermore, once the driven shaft 123 is inserted into the shaft hole 14, its deviation from the central axis of the shaft hole 14 is minimized, thereby reducing friction between the driven shaft 123 and the inner wall of the shaft hole 14, improving operational stability, and reducing noise. For example, the driving shaft 122 may have a polygonal structure, and the corresponding cylindrical hole of the transmission member 132 may also have a polygonal structure, so that the two do not move relative to each other. Alternatively, the driving shaft 122 may have a spline, and the corresponding cylindrical hole of the transmission member 132 may cooperate with the spline to form a fixed connection.

[0068] As a preferred embodiment, the side wall of the cooking chamber 10 is provided with a rotatable transmission shaft 19, the driving mechanism 13 includes a motor 131 and an insulating coupling 20, one end of the transmission shaft 19 is fixedly connected to the driving shaft 122, and the other end is connected to the output shaft of the motor 131 through the insulating coupling 20.

[0069] like Figure 11As shown, the use of the heat-insulating coupling 20 can prevent the high temperature of the grill 12 from being transferred to the motor 131 while ensuring the transmission effect, causing the motor 131 to have a serious temperature rise and affect the performance and life of the motor 131.

[0070] The technical solutions protected by this utility model are not limited to the above-described embodiments. It should be noted that the combination of the technical solutions of any one embodiment with the technical solutions of one or more other embodiments falls within the scope of protection of this utility model. Although the above description of this utility model has been provided in detail using general instructions and specific embodiments, it is obvious to those skilled in the art that modifications or improvements can be made based on this utility model. Therefore, such modifications or improvements made without departing from the spirit of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A food grilling appliance comprising a cooking cavity with an opening on the side, a door, a grill, and a drive mechanism disposed outside the cooking cavity, wherein the door is rotatably disposed on the side of the cooking cavity and is used to open and close the opening, and the grill is rotatably disposed within the cooking cavity, characterized in that: The grill includes a frame body, a driving shaft and a driven shaft connected to both ends of the frame body, the driving shaft is connected to the driving mechanism, and the side of the door body facing the opening is provided with an axis hole and a conical guide surface radially extending from the edge of the axis hole, and the conical guide surface is configured to guide the driven shaft to disengage or insert into the axis hole when the door body is opened or closed.

2. A food baking appliance according to claim 1, characterized in that: The distance from the highest point of the tapered guide surface to the central axis of the shaft hole is smaller than the distance from the lowest point of the tapered guide surface to the central axis of the shaft hole.

3. A food baking appliance according to claim 1, characterized in that: A shaft sleeve is provided on the side of the door body facing the opening, an axis hole and a tapered guide surface are formed in the shaft sleeve, and the shaft sleeve and the door body are an integral structure or a split structure.

4. A food baking appliance according to claim 3, characterized in that: The shaft sleeve and the door body are separate structures, and the shaft sleeve is a heat-insulating shaft sleeve.

5. A food baking appliance according to claim 1, characterized in that: The end of the driven shaft is configured to be conical or have an arc-shaped end surface.

6. A food baking appliance according to claim 1, characterized in that: The opening angle of the conical guide surface is θ, 45°≤θ≤170°, and the radial dimension of the opening of the conical guide surface is not less than 5 mm.

7. The food baking appliance according to claim 1, characterized in that: The driven shaft is provided with a first shaft shoulder, which is arranged to abut against the connection between the shaft hole and the tapered guide surface when the driven shaft is inserted into the shaft hole; And / or, the driving shaft is provided with a second shoulder, the driving mechanism includes a motor and a transmission member connecting the motor and the driving shaft, and the second shoulder is configured to abut against the limiting portion of the transmission member when the driving shaft is inserted into the transmission member.

8. The food baking appliance according to claim 1, characterized in that: The shaft hole and the tapered guide surface are connected through an arc transition.

9. The food baking appliance according to claim 1, characterized in that: The driving mechanism includes a motor and a transmission member connected to the motor, one end of the transmission member extends into the cooking cavity and is fixedly connected to the driving shaft, and the length of the driving shaft inserted into the transmission member is greater than the length of the driven shaft inserted into the shaft hole.

10. The food baking appliance according to claim 1, characterized in that: A rotatable transmission shaft is provided on the side wall of the cooking cavity. The driving mechanism includes a motor and a thermal insulation coupling. One end of the transmission shaft is fixedly connected to the driving shaft, and the other end is transmission-connected to the output shaft of the motor through the thermal insulation coupling.

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