Door structure and cooking device

Abstract

The present invention relates to a door structure and a cooking device. The door structure comprises a base plate, a drive structure, a linkage structure, and a door body. The drive structure comprises a drive member, a self-locking assembly, and a rotating shaft. The drive member is fixed to the base plate and is dynamically connected to the rotating shaft via the self-locking assembly, so that the transmission of the rotating shaft toward the drive member is self-locking. The linkage structure comprises a rotating frame, a first bevel gear, a second bevel gear, and a telescopic assembly. The rotating frame is fixed to the rotating shaft, and the door body is arranged on the rotating frame via the telescopic assembly. The first bevel gear is fixed relative to the base plate, and the second bevel gear is fixed to the telescopic assembly and is always engaged with the first bevel gear during the rotation of the rotating frame. The overall motion trajectory of the door body is that it rotates around the rotating shaft and telescopically translates along the radial direction of the rotating shaft, thereby ensuring that the door body and the base plate do not interfere with each other. In addition, the mechanical self-locking characteristics of the self-locking assembly can be used to achieve the door body hovering at any angle.

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, existing fixed-axis hinges require a large gap between the lower edge of the door front end and the cabinet bottom plate to prevent interference between the lower edge of the door front end and the cabinet bottom plate during the door opening and closing process. This gap is prone to dust accumulation and water seepage, making it difficult to clean and affecting the overall appearance.

[0004] On the other hand, in order to ensure that the door can hover at any angle when opened, high requirements are placed on the hinge damping. After long-term use, the door may be unable to hover due to damping failure. Summary of the Invention

[0005] Based on this, it is necessary to provide a door structure and cooking device with a relatively small gap, no interference and the ability to hover at any angle at all times to address the problem that the gap between the lower edge of the front end of the door and the bottom plate of the cabinet is large and cannot be hovered at will after long-term use.

[0006] The present application first provides a door structure, including a base plate, a driving structure, a linkage structure and a door body.

[0007] The driving structure includes a driving member, a self-locking component and a rotating shaft, wherein the driving member is fixed to the base plate, and the driving member is dynamically connected to the rotating shaft via the self-locking component so that the transmission of the rotating shaft in the direction of the driving member is self-locking;

[0008] The linkage structure includes a rotating frame, a first bevel gear, a second bevel gear and a telescopic assembly. The rotating frame is fixed to the rotating shaft, and the door body is arranged on the rotating frame through the telescopic assembly.

[0009] The first bevel gear is fixed relative to the base plate, the second bevel gear is fixed to the telescopic assembly and is always engaged with the first bevel gear during the rotation of the rotating frame, and the telescopic assembly can convert the rotation of the second bevel gear into the translation of the door body along the radial direction of the rotating shaft.

[0010] In one embodiment, the self-locking assembly includes a worm and a worm wheel that mesh with each other, the worm is fixed to the output end of the driving member, and the worm wheel is fixed to the rotating shaft.

[0011] In one embodiment, the telescopic assembly includes a push block, a rotating rod, and a limiting rod. The push block is fixed to the door body and has a through hole formed therein along the radial direction of the rotating shaft. The rotating rod is rotatably connected to the rotating frame and partially inserted into the through hole. The second bevel gear is fixed to the rotating rod.

[0012] One of the outer circumference of the rotating rod and the inner wall of the through hole is provided with a spiral sliding groove, and the other is fixed with a protruding rod slidably connected to the sliding groove;

[0013] The limiting rod is parallel to the rotating rod, one end of the limiting rod is fixed to the rotating frame, and the other end is inserted into the pushing block and slidably connected to the pushing block.

[0014] In one embodiment, the rotating frame is U-shaped, both ends of the rotating frame are respectively fixed to the rotating shaft, and the rotating rod passes through the bottom of the rotating frame to the inner side of the rotating frame.

[0015] In one embodiment, the telescopic assembly includes two limiting rods, both of which are fixed to the bottom of the rotating frame and symmetrically arranged on both sides of the rotating rod along the length direction of the rotating shaft.

[0016] In one embodiment, the linkage structure further comprises a bracket fixed to the base plate, and a support rod is fixed to the bracket;

[0017] The support rod and the second bevel gear are both located inside the rotating frame along the length direction of the rotating shaft. The rotating shaft passes through 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.

[0018] In one embodiment, the door structure includes two groups of linkage structures, and the two groups of linkage structures are respectively arranged at both ends of the rotating shaft.

[0019] 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, and the telescopic assembly is fixed to the door body main body.

[0020] In one embodiment, a lower baffle corresponding to the door baffle is fixed to the edge of the top surface of the bottom plate.

[0021] A second aspect of the present application provides a cooking device comprising the above-mentioned door structure.

[0022] In the above door structure, the driving member drives the rotating shaft to rotate, thereby driving the door body to open and close through 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.

[0023] During the rotation of the rotating frame, the first bevel gear can drive the second bevel gear to rotate, and then the telescopic assembly can drive the door body to translate along the radial direction of the rotating shaft, so that the overall motion trajectory of the door body is to rotate around the rotating shaft while telescoping and translating along the radial direction of the rotating shaft, thereby ensuring that the gap between the door body and the bottom plate will not interfere with each other.

[0024] In addition, the driving member and the rotating shaft are connected by a one-way power connection through a self-locking component. By utilizing the mechanical self-locking characteristics of the self-locking component, the rotating shaft can only be driven to rotate by the driving member, and the driving member cannot be driven to rotate in the opposite direction by the rotating shaft. Therefore, when the driving member stops rotating at any angle, the door body can be suspended, effectively improving the user experience of the door body structure of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional diagram of the door structure of the present application when the door is closed;

[0026] Figure 2 This is a three-dimensional diagram of the door structure of the present application when the door is open;

[0027] Figure 3 for Figure 2 An enlarged view of the location of the middle drive assembly and linkage assembly;

[0028] Figure 4 for Figure 3 Exploded view of the middle push block and the rotating rod;

[0029] Figure 5 for Figure 3 A stereogram from another angle.

[0030] Figure numerals: 10, bottom plate; 11, lower baffle; 20, driving structure; 21, driving member; 22, self-locking assembly; 221, worm gear; 222, worm; 23, rotating shaft; 30, linkage structure; 31, rotating frame; 32, first bevel gear; 33, second bevel gear; 34, telescopic assembly; 341, push block; 341a, through hole; 341b, slide groove; 342, rotating rod; 342a, extension rod; 343, limiting rod; 35, bracket; 351, support rod; 40, door body; 41, door body main body; 42, door body baffle. DETAILED DESCRIPTION

[0031] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] 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 to 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0033] 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 the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0035] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0036] 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 an intermediate 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 an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0037] 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 structure 20, a linkage structure 30 and a door body 40, the driving structure 20 includes a driving member 21, a self-locking component 22 and a rotating shaft 23, the driving member 21 is fixed to the base plate 10, and the driving member 21 is dynamically connected to the rotating shaft 23 through the self-locking component 22, so that the transmission of the rotating shaft 23 in the direction of the driving member 21 is self-locking; the linkage structure 30 includes a rotating frame 31, a first bevel gear 32, a second bevel gear 33 and a telescopic component 34, the rotating frame 31 is fixed to the rotating shaft 23, and the door body 40 is arranged on the rotating frame 31 through the telescopic component 34; the first bevel gear 32 is fixed relative to the base plate 10, the second bevel gear 33 is fixed to the telescopic component 34 and is always engaged with the first bevel gear 32 during the rotation of the rotating frame 31, and the telescopic component 34 can convert the rotation of the second bevel gear 33 into a translation of the door body 40 along the radial direction of the rotating shaft 23.

[0038] In the present application, the driving member 21 drives the rotating shaft 23 to rotate, thereby driving the door body 40 to open and close through the rotating frame 31 fixed to the rotating shaft 23. 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.

[0039] In addition, during the rotation of the rotating frame 31, the second bevel gear 33 can be driven to rotate through the first bevel gear 32, and then the telescopic assembly 34 can drive the door body 40 to translate along the radial direction of the rotating shaft 23, so that the overall motion trajectory of the door body 40 is to rotate around the rotating shaft 23 while telescoping and translating along the radial direction of the rotating shaft 23, thereby ensuring that the gap between the door body 40 and the base plate 10 does not interfere with each other.

[0040] 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 23 as the rotation center, but also translates upward along the radial direction of the rotating shaft 23, thereby making the door body 40 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 complete the opening and closing normally, effectively improving the appearance integrity of the door body structure and avoiding water seepage and dust accumulation in the gap position.

[0041] It is worth mentioning that the driving member 21 and the rotating shaft 23 are connected by a one-way power connection through the self-locking component 22. By utilizing the mechanical self-locking characteristics of the self-locking component 22, the rotating shaft 23 can only be driven to rotate by the driving member 21, and the rotating shaft 23 cannot drive the driving member 21 to rotate in the opposite direction. Therefore, when the driving member 21 stops rotating at any angle, the door body 40 can be suspended, which effectively improves the user experience of the door body structure of this application.

[0042] Specifically, the driving member 21 can be a motor or other commonly used power elements, such as a cylinder, etc., and it only needs to cooperate with the self-locking component 22 to ensure that it can drive the rotating shaft 23 to rotate.

[0043] Please refer to Figure 3 As shown, in some embodiments, the self-locking assembly 22 includes a worm 222 and a worm wheel 221 that mesh with each other. The worm 222 is fixed to the output end of the driving member 21 , and the worm wheel 221 is fixed to the rotating shaft 23 .

[0044] Of course, in some other embodiments, other transmission structures may be used to connect the driving member 21 and the rotating shaft 23, as long as reverse self-locking from the rotating shaft 23 to the driving member 21 can be achieved. This application does not give examples one by one here.

[0045] Please combine Figure 3 as well as Figure 4 As shown, in some embodiments, the telescopic assembly 34 includes a push block 341, a rotating rod 342 and a limiting rod 343. The push block 341 is fixed to the door body 40, and a through hole 341a is opened inside along the radial direction of the rotating shaft 23. The rotating rod 342 is rotatably connected to the rotating frame 31 and partially inserted into the through hole 341a. The second bevel gear 33 is fixed to the rotating rod 342; a spiral groove 341b is opened on the outer peripheral surface of the rotating rod 342 and one of the inner walls of the through hole 341a, and the other is fixed with a protruding rod 342a slidably connected to the groove 341b; the limiting rod 343 is parallel to the rotating rod 342, one end of the limiting rod 343 is fixed to the rotating frame 31, and the other end is inserted into the pushing block 341 and slidably connected to the pushing block 341.

[0046] Preferably, a sliding groove 341 b is formed through the inner wall of the through hole 341 a , and a protruding rod 342 a is fixed on the outer peripheral surface of the rotating rod 342 and extends into the sliding groove 341 b along its own radial direction.

[0047] Specifically, the rotation of the rotating rod 342 can be achieved by the extension rod 342a and the inner wall of the slide groove 341b. Since the push block 341 is fixed to the door body 40, the extension rod 342a can push the push block 341 and the door body 40 to move horizontally and telescopically along the length direction of the rotating rod 342 (that is, the radial direction of the rotating shaft 23).

[0048] Please combine Figure 3 as well as Figure 5 As shown, in some embodiments, the rotating frame 31 is U-shaped, with both ends of the rotating frame 31 respectively fixed to the rotating shaft 23 , and the rotating rod 342 passes through the bottom of the rotating frame 31 to the inner side of the rotating frame 31 .

[0049] The U-shaped rotating frame 31 ensures that the rotating frame 31 and the rotating shaft 23 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 32 and the second bevel gear 33, so as to minimize the space occupied by the linkage structure 30.

[0050] Please combine Figure 3 as well as Figure 5 As shown, in some embodiments, the telescopic assembly 34 includes two limiting rods 343 , both of which are fixed to the bottom of the rotating frame 31 and are symmetrically arranged on both sides of the rotating rod 342 along the length direction of the rotating shaft 23 .

[0051] On one hand, the limiting rod 343 can cooperate with the rotating rod 342 to limit the rotation of the door body 40, thereby preventing the rotating rod 342 from rotating the door body 40, and on the other hand, it can also play a certain guiding role in the extension and retraction of the door body 40.

[0052] In some other embodiments, if two or more linkage structures 30 are connected to the rotating shaft 23, the rotation of the door body 40 can be limited by relying solely on the rotating rod 342 in each linkage structure 30. In such embodiments, the limiting rod 343 may not be set, and this application does not make further limitations here.

[0053] Please combine Figure 3 as well as Figure 5 As shown, in some embodiments, the linkage structure 30 further includes a bracket 35 fixed to the base plate 10 , and a support rod 351 is fixed to the bracket 35 ;

[0054] The support rod 351 and the second bevel gear 33 are both located inside the rotating frame 31 along the length direction of the rotating shaft 23. The rotating shaft 23 passes through the support rod 351 and the second bevel gear 33 and is rotatably connected to the two. The second bevel gear 33 is fixed to the support rod 351.

[0055] The support rod 351 is used to support the rotating shaft 23 and fix the second bevel gear 33 so that when the rotating shaft 23 drives the rotating frame 31 to rotate, the first bevel gear 32 can mesh with the second bevel gear 33 and rotate to achieve the extension and retraction of the telescopic assembly 34.

[0056] Specifically, the bracket 35 is L-shaped, wherein the horizontal plate is fitted and fixed to the bottom plate 10, and the vertical plate is located on the side of the rotating shaft 23 away from the door body 40, and is directly opposite the first bevel gear 32 and the second bevel gear 33. With such an arrangement, on the one hand, the contact area between the bracket 35 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.

[0057] More specifically, the support rod 351 is fixed to the vertical plate portion of the bracket 35 and is arranged parallel to the bottom plate 10 .

[0058] Please refer to Figure 2 As shown, in some embodiments, the door structure includes two sets of linkage structures 30 , and the two sets of linkage structures 30 are respectively arranged at both ends of the rotating shaft 23 .

[0059] The two sets of linkage structures 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.

[0060] In some embodiments, the two groups of linkage structures 30 are mirror-symmetrical to further improve the force uniformity of the entire system; of course, in some other embodiments, the door body structure may also include three or more groups of linkage structures 30 to further improve the overall force uniformity of the door body structure of the present application, which will not be elaborated in this application.

[0061] In some embodiments, the number of teeth of the first bevel gear 32 is greater than that of the second bevel gear 33, thereby increasing the extension and retraction speed of the door body 40, thereby accelerating the active avoidance speed when the door body 40 is opened, and minimizing the height of the required reserved gap.

[0062] Please combine Figure 2 as well as Figure 5 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 , and the telescopic assembly 34 is fixed to the door body main body 41 .

[0063] 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 that the door body 40 opens and closes normally and does not interfere with the bottom plate 10.

[0064] In some embodiments, the door body 41 is provided with a mounting groove, and the push block 341 is fixed to the inner wall of the mounting groove.

[0065] Please combine Figure 2 as well as Figure 5 As shown, in some embodiments, a lower baffle 11 corresponding to the door baffle 42 is fixed to the top edge of the bottom plate 10 .

[0066] 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 between the two. This application does not make further limitations here.

[0067] A second aspect of the present application provides a cooking device comprising the above-mentioned door structure.

[0068] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0069] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A door structure, characterized in that: It comprises a base plate (10), a driving structure (20), a linkage structure (30) and a door body (40), The driving structure (20) comprises a driving member (21), a self-locking component (22) and a rotating shaft (23); the driving member (21) is fixed to the base plate (10); the driving member (21) is connected to the rotating shaft (23) by power through the self-locking component (22), so that the rotating shaft (23) is self-locked when it is driven in the direction of the driving member (21); The linkage structure (30) includes a rotating frame (31), a first bevel gear (32), a second bevel gear (33), and a telescopic assembly (34); the rotating frame (31) is fixed to the rotating shaft (23); and the door body (40) is arranged on the rotating frame (31) via the telescopic assembly (34); The first bevel gear (32) is fixed relative to the base plate (10), the second bevel gear (33) is fixed to the telescopic assembly (34) and is always engaged with the first bevel gear (32) during the rotation of the rotating frame (31), and the telescopic assembly (34) is capable of converting the rotation of the second bevel gear (33) into a translation of the door body (40) along the radial direction of the rotating shaft (23); The telescopic assembly (34) includes a push block (341), a rotating rod (342), and a limiting rod (343); the push block (341) is fixed to the door body (40), and a through hole (341a) is provided inside the push block along the radial direction of the rotating shaft (23); the rotating rod (342) is rotatably connected to the rotating frame (31) and partially inserted into the through hole (341a); the second bevel gear (33) is fixed to the rotating rod (342); One of the outer peripheral surface of the rotating rod (342) and the inner wall of the through hole (341a) is provided with a spiral sliding groove (341b), and the other is fixed with a protruding rod (342a) that is slidably connected to the sliding groove (341b).

2. The door structure according to claim 1, characterized in that: The self-locking assembly (22) comprises a worm (222) and a worm wheel (221) that mesh with each other, the worm (222) being fixed to the output end of the driving member (21), and the worm wheel (221) being fixed to the rotating shaft (23).

3. The door structure according to claim 1, characterized in that: The limiting rod (343) is parallel to the rotating rod (342), one end of the limiting rod (343) is fixed to the rotating frame (31), and the other end is inserted into the pushing block (341) and slidably connected to the pushing block (341).

4. The door structure according to claim 3, 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 (23), and the rotating rod (342) passes through the bottom of the rotating frame (31) to the inner side of the rotating frame (31).

5. The door structure according to claim 4, characterized in that: The telescopic assembly (34) includes two limiting rods (343), both of which are fixed to the bottom of the rotating frame (31) and are symmetrically arranged on both sides of the rotating rod (342) along the length direction of the rotating shaft (23).

6. The door structure according to claim 4, characterized in that: The linkage structure (30) further includes a bracket (35) fixed to the base plate (10), and a support rod (351) is fixed to the bracket (35); The support rod (351) and the second bevel gear (33) are both located on the inner side of the rotating frame (31) along the length direction of the rotating shaft (23); the rotating shaft (23) passes through the support rod (351) and the second bevel gear (33) and is rotatably connected to the two; the second bevel gear (33) is fixed to the support rod (351).

7. The door structure according to claim 1, characterized in that: The door body structure comprises two groups of linkage structures (30), and the two groups of linkage structures (30) are respectively arranged at two ends of the rotating shaft (23).

8. The door structure according to any one of claims 1 to 7, 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), and the telescopic assembly (34) is fixed to the door body main body (41).

9. The door structure according to claim 8, 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: The invention comprises a door structure as described in any one of claims 1 to 9.

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