Door body structure and cooking device

Abstract

The invention relates to a door body structure and a cooking device. The door body structure comprises a bottom plate, a driving assembly, a linkage assembly and a door body, the driving assembly comprises a driving piece and a rotating shaft, and the driving piece is fixed to the bottom plate and can drive the rotating shaft to rotate; the linkage assembly comprises a rotating frame, a lead screw, a limiting rod, a first bevel gear and a second bevel gear, the rotating frame is fixed to the rotating shaft, the lead screw and the limiting rod are arranged in parallel, one end of the limiting rod is fixed to the rotating frame, the other end of the limiting rod is inserted into the door body and slidably connected with the door body in the length direction of the limiting rod, and the lead screw is rotationally connected with the rotating frame and is in threaded connection with the door body; the first bevel gear is fixed relative to the bottom plate, and the second bevel gear is fixed to the lead screw and engaged with the first bevel gear all the time in the rotating process of the rotating frame. The whole motion trail of the door body is that the door body stretches and translates along the lead screw while rotating around the rotating shaft, so that the gap between the door body and the bottom plate can be reduced as far as possible on the premise of ensuring that the door body and the bottom plate do not interfere with each other.

Description

Technical Field

[0001] The present invention relates to the technical field related to cooking devices, and in particular to a door structure and a cooking device. Background Art

[0002] Current built-in steaming and baking cooking devices generally use fixed-axis hinges to open and close the door.

[0003] However, the existing fixed-axis hinge requires a large gap between the lower edge of the front end of the door body and the bottom plate of the cabinet to prevent the lower edge of the front end of the door body from interfering with the bottom plate of the cabinet during the door opening and closing process. Dust and water easily accumulate in the gap, making it difficult to clean and affecting the integrity of the overall appearance. Summary of the invention

[0004] Based on this, it is necessary to provide a door structure and cooking device with a relatively small gap that will not interfere with the bottom edge of the front end of the door and the bottom plate of the cabinet to address the current problem of leaving a large gap between the two to avoid interference.

[0005] The present application first provides a door structure, including a base plate, a driving assembly, a linkage assembly and a door body.

[0006] The driving assembly includes a driving member and a rotating shaft, wherein the driving member is fixed to the bottom plate and can drive the rotating shaft to rotate;

[0007] The linkage assembly includes a rotating frame, a lead screw, a limiting rod, a first bevel gear and a second bevel gear, the rotating frame is fixed to the rotating shaft, the lead screw and the limiting rod are arranged in parallel, one end of the limiting rod is fixed to the rotating frame, and the other end is inserted into the door body and slidably connected to the door body along its own length direction, the lead screw is rotatably connected to the rotating frame and is threadedly connected to the door body;

[0008] The first bevel gear is fixed relative to the base plate, and the second bevel gear is fixed to the lead screw and is always meshed with the first bevel gear during the rotation of the rotating frame.

[0009] In one embodiment, the rotating frame is U-shaped, two ends of the rotating frame are respectively fixed to the rotating shaft, and the lead screw passes through the bottom of the rotating frame to the inner side of the rotating frame.

[0010] It can be understood that the U-shaped rotating frame ensures that the rotating frame and the rotating shaft are fixed at two points to ensure a firm connection. At the same time, the space inside the rotating frame can be used to accommodate other parts such as the first bevel gear and the second bevel gear to minimize the space occupied by the linkage assembly.

[0011] In one of the embodiments, the linkage assembly includes two limit rods, both of which are fixed to the bottom of the rotating frame and are symmetrically arranged on both sides of the lead screw along the length direction of the rotating shaft.

[0012] It can be understood that, on the one hand, the limit rod can cooperate with the lead screw to limit the rotation of the door body to prevent the lead screw from rotating and driving the door body to rotate. On the other hand, it can also play a certain guiding role in the extension and retraction of the door body.

[0013] In one of the embodiments, the linkage assembly further comprises a bracket fixed to the base plate, and a support rod is fixed to the bracket;

[0014] The support rod and the second bevel gear are both located on the inner side of the rotating frame along the length direction of the rotating shaft. The rotating shaft penetrates the support rod and the second bevel gear and is rotatably connected to the two. The second bevel gear is fixed to the support rod.

[0015] It can be understood that the support rod is used to support the rotating shaft and fix the second bevel gear, so that when the rotating shaft drives the rotating frame to rotate, the first bevel gear can mesh with the second bevel gear and rotate to achieve the extension and retraction of the lead screw.

[0016] In one embodiment, the door structure includes two groups of linkage components, and the two groups of linkage components are respectively arranged at two ends of the rotating shaft.

[0017] It can be understood that the two sets of linkage components can improve the overall force uniformity of the door structure of the present application, making the door connection more stable and the rotation and telescopic movements smoother.

[0018] In one embodiment, the driving assembly further includes a first gear and a second gear meshing with each other, the first gear is fixed to the output shaft of the driving member, and the second gear is fixed to the rotating shaft;

[0019] The number of teeth of the first gear is smaller than that of the second gear, and the number of teeth of the first bevel gear is larger than that of the second bevel gear.

[0020] It can be understood that the number of teeth of the first gear is smaller than that of the second gear, so that the rotating shaft and the rotating frame can obtain greater torque, reducing the power demand for the driving component when the weight of the door body is constant, thereby achieving the effect of reducing parts costs; and the number of teeth of the first bevel gear is greater than that of the second bevel gear, which can increase the extension and retraction speed of the door body, thereby speeding up the active avoidance speed when the door body is opened, so as to minimize the height of the required reserved gap.

[0021] In one embodiment, the door body includes a door body main body and a door body baffle fixed to the bottom edge of the door body main body.

[0022] It can be understood that by setting a door baffle with a thickness less than the door body at the bottom of the door body, the gap between the door body and the bottom plate can be further narrowed while ensuring the normal opening and closing of the door body and no interference with the bottom plate.

[0023] In one of the embodiments, a nut push rod is embedded and fixed in the door body, and the lead screw is threadedly connected to the nut push rod.

[0024] In one of the embodiments, a lower baffle corresponding to the door baffle is fixed to the edge of the top surface of the bottom plate.

[0025] A second aspect of the present application provides a cooking device, comprising the above-mentioned door structure.

[0026] The above-mentioned door structure drives the rotating shaft to rotate through the driving member, so that the door body is driven to open and close by the rotating frame fixed to the rotating shaft. The automatic opening and closing of the door body can be controlled by controlling the forward and reverse rotation of the driving member, which is convenient to operate.

[0027] During the rotation of the rotating frame, the relative rotation between the second bevel gear and the first bevel gear can drive the lead screw to rotate, thereby driving the door body to expand and contract along the length direction of the lead screw, so that the overall motion trajectory of the door body is to rotate around the rotating shaft while expanding and contracting along the lead screw, thereby minimizing the gap between the door body and the bottom plate as much as possible while ensuring that there is no interference between the door body and the bottom plate;

[0028] In addition, the extension and retraction of the door body is achieved by rotating the screw, and utilizing the mechanical self-locking characteristics of the screw nut structure, when the driving part stops rotating, the extension and retraction length of the door body can be suspended arbitrarily, so as to improve the user experience of the door body structure of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a three-dimensional diagram of the door structure of the present application when the door is in a closed state;

[0030] Figure 2 This is a three-dimensional diagram of the door structure of the present application when the door is open;

[0031] Figure 3 for Figure 2 A magnified view of the location of the middle drive assembly and linkage assembly;

[0032] Figure 4 for Figure 3 A stereogram from another angle.

[0033] Figure numerals: 10, bottom plate; 11, lower baffle; 20, driving assembly; 21, driving member; 22, rotating shaft; 23, first gear; 24, second gear; 30, linkage assembly; 31, rotating frame; 32, lead screw; 33, limiting rod; 34, first bevel gear; 35, second bevel gear; 36, bracket; 361, support rod; 40, door body; 41, door body main body; 411, nut push rod; 42, door body baffle. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] Please combine Figure 1 , Figure 2 as well as Figure 3 As shown, the present application first provides a door body structure, including a base plate 10, a driving assembly 20, a linkage assembly 30 and a door body 40, the driving assembly 20 includes a driving member 21 and a rotating shaft 22, the driving member 21 is fixed to the base plate 10 and can drive the rotating shaft 22 to rotate; the linkage assembly 30 includes a rotating frame 31, a screw 32, a limiting rod 33, a first bevel gear 34 and a second bevel gear 35, the rotating frame 31 is fixed to the rotating shaft 22, the screw 32 and the limiting rod 33 are arranged parallel to each other, one end of the limiting rod 33 is fixed to the rotating frame 31, and the other end is inserted into the door body 40 and is slidably connected to the door body 40 along its own length direction, the screw 32 is rotatably connected to the rotating frame 31 and is threadedly connected to the door body 40; the first bevel gear 34 is fixed relative to the base plate 10, the second bevel gear 35 is fixed to the screw 32 and is always meshed with the first bevel gear 34 during the rotation of the rotating frame 31.

[0041] In the present application, the driving member 21 drives the rotating shaft 22 to rotate, thereby driving the door body 40 to open and close through the rotating frame 31 fixed to the rotating shaft 22. The automatic opening and closing of the door body 40 can be controlled by controlling the forward and reverse rotation of the driving member 21, which is convenient to operate.

[0042] In addition, during the rotation of the rotating frame 31, the relative rotation between the second bevel gear 35 and the first bevel gear 34 can drive the screw 32 to rotate, thereby driving the door body 40 to extend and retract along the length direction of the screw 32, so that the overall motion trajectory of the door body 40 is to rotate around the rotating shaft 22 while extending and retracting and translating along the screw 32, thereby minimizing the gap between the door body 40 and the base plate 10 as much as possible while ensuring that there is no interference between the two.

[0043] Specifically, taking the opening of the door body 40 from a closed state as an example, at the moment of opening, the door body 40 not only rotates outward with the rotating shaft 22 as the rotation center, but also translates upward along the lead screw 32, so that the door body 40 is away from the bottom plate 10 to prevent interference between the two; therefore, even if the gap between the door body 40 and the bottom plate 10 is small in the closed state, the door body 40 can also complete the opening and closing normally, which effectively improves the appearance integrity of the door body structure and avoids water seepage and dust accumulation in the gap position.

[0044] It is worth mentioning that the extension and retraction of the door body 40 is achieved by rotating the screw 32. By utilizing the mechanical self-locking characteristics of the screw nut structure, when the driving member 21 stops rotating, the extension and retraction length of the door body 40 can be suspended arbitrarily to improve the user experience of the door body structure of the present application.

[0045] Specifically, the driving member 21 may be a motor or other commonly used power elements, such as a cylinder, etc. It is only necessary to set a corresponding transmission component at the power output end to ensure that the rotating shaft 22 can be driven to rotate.

[0046] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the rotating frame 31 is U-shaped, and both ends of the rotating frame 31 are respectively fixed to the rotating shaft 22 , and the lead screw 32 passes through the bottom of the rotating frame 31 to the inner side of the rotating frame 31 .

[0047] The U-shaped rotating frame 31 ensures that the rotating frame 31 and the rotating shaft 22 are fixed at two points to ensure a firm connection. At the same time, the space inside the rotating frame 31 can be used to accommodate other parts such as the first bevel gear 34 and the second bevel gear 35 to minimize the space occupied by the linkage assembly 30.

[0048] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the linkage assembly 30 includes two limit rods 33 , both of which are fixed to the bottom of the rotating frame 31 and are symmetrically arranged on both sides of the lead screw 32 along the length direction of the rotating shaft 22 .

[0049] On one hand, the limit rod 33 can cooperate with the lead screw 32 to limit the rotation of the door body 40 to prevent the door body 40 from rotating due to the rotation of the lead screw 32 . On the other hand, it can also play a certain guiding role in the extension and retraction of the door body 40 .

[0050] In some other embodiments, if two or more linkage components 30 are connected to the rotating shaft 22, the rotation of the door body 40 can be limited by relying solely on the lead screw 32 in each linkage component 30. In such embodiments, the limit rod 33 may not be set, and the present application does not make further limitations here.

[0051] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the linkage assembly 30 further includes a bracket 36 fixed to the base plate 10, and a support rod 361 is fixed to the bracket 36;

[0052] The support rod 361 and the second bevel gear 35 are both located inside the rotating frame 31 along the length direction of the rotating shaft 22 . The rotating shaft 22 penetrates the support rod 361 and the second bevel gear 35 and is rotatably connected to the two. The second bevel gear 35 is fixed to the support rod 361 .

[0053] The support rod 361 is used to support the rotating shaft 22 and fix the second bevel gear 35 , so that when the rotating shaft 22 drives the rotating frame 31 to rotate, the first bevel gear 34 can mesh with the second bevel gear 35 and rotate to achieve the extension and retraction of the lead screw 32 .

[0054] Specifically, the bracket 36 is L-shaped, the horizontal plate is fixed to the bottom plate 10, and the vertical plate is located on the side of the shaft 22 away from the door body 40, and is directly opposite to the first bevel gear 34 and the second bevel gear 35. With this arrangement, on the one hand, the contact area between the bracket 36 and the bottom plate 10 is relatively large and the fixation is reliable. On the other hand, the vertical plate part can play a certain blocking and protective role on the gear transmission structure to prevent other foreign objects from being involved in the gear transmission structure and affecting the normal operation of the door structure.

[0055] More specifically, the support rod 361 is fixed to the vertical plate portion of the bracket 36 and is disposed parallel to the bottom plate 10 .

[0056] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, the door structure includes two groups of linkage components 30, and the two groups of linkage components 30 are respectively arranged at both ends of the rotating shaft 22.

[0057] The two groups of linkage components 30 can improve the overall force uniformity of the door structure of the present application, making the connection of the door body 40 more stable and the rotation and telescopic movements smoother.

[0058] In some embodiments, the two groups of linkage components 30 are mirror-symmetrical to further improve the force uniformity of the entire system. The rotation directions of the lead screws 32 on both sides are opposite, and the threads on the lead screws 32 and the door body 40 are also opposite.

[0059] Of course, in some other embodiments, the door structure may also include three or more linkage components 30 to further improve the overall force uniformity of the door structure of the present application, which will not be elaborated in this application.

[0060] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the driving assembly 20 further includes a first gear 23 and a second gear 24 meshing with each other, the first gear 23 is fixed to the output shaft of the driving member 21, and the second gear 24 is fixed to the rotating shaft 22;

[0061] The number of teeth of the first gear 23 is smaller than that of the second gear 24 , and the number of teeth of the first bevel gear 34 is larger than that of the second bevel gear 35 .

[0062] Among them, the number of teeth of the first gear 23 is smaller than that of the second gear 24, so that the rotating shaft 22 and the rotating frame 31 can obtain a larger torque, reducing the power demand for the driving member 21 when the weight of the door body 40 is constant, thereby achieving the effect of reducing parts cost; and the number of teeth of the first bevel gear 34 is greater than that of the second bevel gear 35, which can increase the extension and retraction speed of the door body 40, thereby speeding up the active avoidance speed when the door body 40 is opened, so as to minimize the height of the required reserved gap.

[0063] Please combine Figure 3 as well as Figure 4 As shown, in some embodiments, the door body 40 includes a door body main body 41 and a door body baffle 42 fixed to the bottom edge of the door body main body 41 .

[0064] Specifically, the door baffle 42 is fixed to the outer edge of the bottom of the door body 41, the outer side surface of the door baffle 42 is flush with the door body 41, and the thickness of the door baffle 42 is smaller than the door body 41, thereby further reducing the gap between the door body 40 and the bottom plate 10 while ensuring the normal opening and closing of the door body 40 and no interference with the bottom plate 10.

[0065] Please combine Figure 2 as well as Figure 4 As shown, in some embodiments, a nut push rod 411 is embedded and fixed in the door body 41 , and the lead screw 32 is threadedly connected to the nut push rod 411 .

[0066] Please combine Figure 1 as well as Figure 4 As shown, in some embodiments, a lower baffle 11 corresponding to the door baffle 42 is fixed to the edge of the top surface of the bottom plate 10 .

[0067] Of course, in some other embodiments, the lower baffle 11 may not be provided, and the door baffle 42 or the door body 41 may be extended as far as possible toward the bottom plate 10 to reduce the gap therebetween, and the present application does not make any further limitations thereon.

[0068] A second aspect of the present application provides a cooking device, comprising the above-mentioned door structure.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A door structure, characterized in that: It comprises a base plate (10), a driving assembly (20), a linkage assembly (30) and a door body (40). The driving assembly (20) comprises a driving member (21) and a rotating shaft (22); the driving member (21) is fixed to the base plate (10) and is capable of driving the rotating shaft (22) to rotate; The linkage assembly (30) comprises a rotating frame (31), a lead screw (32), a limiting rod (33), a first bevel gear (34) and a second bevel gear (35); the rotating frame (31) is fixed to the rotating shaft (22); the lead screw (32) and the limiting rod (33) are arranged in parallel; one end of the limiting rod (33) is fixed to the rotating frame (31); the other end of the limiting rod (33) is inserted into the door body (40) and is slidably connected to the door body (40) along its own length direction; the lead screw (32) is rotationally connected to the rotating frame (31) and is threadedly connected to the door body (40); The first bevel gear (34) is fixed relative to the base plate (10), and the second bevel gear (35) is fixed to the lead screw (32) and is always meshed with the first bevel gear (34) during the rotation of the rotating frame (31).

2. The door structure according to claim 1, characterized in that: The rotating frame (31) is U-shaped, and both ends of the rotating frame (31) are respectively fixed to the rotating shaft (22), and the lead screw (32) passes through the bottom of the rotating frame (31) to the inner side of the rotating frame (31).

3. The door structure according to claim 2, characterized in that: The linkage assembly (30) comprises two limit rods (33), which are both fixed to the bottom of the rotating frame (31) and symmetrically arranged on both sides of the lead screw (32) along the length direction of the rotating shaft (22).

4. The door structure according to claim 2, characterized in that: The linkage assembly (30) further comprises a bracket (36) fixed to the base plate (10), and a support rod (361) is fixed to the bracket (36); The support rod (361) and the second bevel gear (35) are both located on the inner side of the rotating frame (31) along the length direction of the rotating shaft (22); the rotating shaft (22) passes through the support rod (361) and the second bevel gear (35) and is rotatably connected to the two; the second bevel gear (35) is fixed to the support rod (361).

5. The door structure according to claim 1, characterized in that: The door body structure comprises two groups of linkage components (30), and the two groups of linkage components (30) are respectively arranged at two ends of the rotating shaft (22).

6. The door structure according to claim 1, characterized in that: The driving assembly (20) further comprises a first gear (23) and a second gear (24) meshing with each other, wherein the first gear (23) is fixed to the output shaft of the driving member (21), and the second gear (24) is fixed to the rotating shaft (22); The number of teeth of the first gear (23) is smaller than that of the second gear (24), and the number of teeth of the first bevel gear (34) is larger than that of the second bevel gear (35).

7. The door structure according to any one of claims 1 to 6, characterized in that: The door body (40) comprises a door body main body (41) and a door body baffle (42) fixed to the bottom edge of the door body main body (41).

8. The door structure according to claim 7, characterized in that: A nut push rod (411) is embedded and fixed in the door body (41), and the lead screw (32) is threadedly connected to the nut push rod (411).

9. The door structure according to claim 7, characterized in that: A lower baffle (11) corresponding to the door baffle (42) is fixed to the top edge of the bottom plate (10).

10. A cooking device, characterized in that: It comprises a door structure as described in any one of claims 1 to 9.

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