Door assembly and cooking device

Abstract

The application relates to a door assembly and a cooking device, which comprises a box assembly and a door assembly. The door assembly comprises an outer plate, an inner plate, a driving member and a transmission mechanism. The inner plate is movably installed on the outer plate and is used for abutting against a door seal of the box assembly. The driving member comprises a fixed gear and a movable gear. The fixed gear is fixedly arranged on the box assembly, and the movable gear is installed on the outer plate. The movable gear is engaged with the fixed gear. When the door is closed, the movable gear rotates forward around the fixed gear. When the door is opened, the movable gear rotates reversely around the fixed gear. The input end and the output end of the transmission mechanism are respectively transmissionally connected with the movable gear and the inner plate. When the movable gear rotates forward, the transmission mechanism drives the inner plate to move away from the outer plate to press the door seal. When the movable gear rotates reversely, the transmission mechanism drives the inner plate to move close to the outer plate and away from the door seal. The inner plate is automatically pressed to the door seal during the opening and closing of the door. The structure is simple, the synchronism is good, the technician is facilitated to adjust, and the maintenance cost is low.

Description

Technical Field

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

[0002] Preventing steam leakage has always been a design challenge for cooking appliances. Currently, steam-bake and microwave cooking appliances in the cooking appliance market typically employ two approaches to prevent water and air leakage: 1. Continuous improvements to the door seal; 2. Manual tightening of the door seal during production. While continuous improvements to the door seal structure offer a one-to-one fit, they lack versatility, are costly, and require significant effort. Manual tightening in Option 2, however, can lead to loosening of the door seal due to frequent opening and closing of the door, resulting in water and air leakage, posing a safety hazard. Summary of the Invention

[0003] Since the existing solutions for preventing steam leakage in cooking devices have problems such as poor versatility and easy loosening of the door sealing ring during long-term use, it is necessary to provide a door assembly and a cooking device.

[0004] The door assembly is used to be rotatably connected to the box assembly, comprising:

[0005] outer panel;

[0006] an inner plate, the inner plate being movably mounted on the outer plate and being used to abut against a door seal of the box assembly;

[0007] a driving member, comprising a fixed gear fixed to the box assembly and a movable gear mounted on the outer panel, the movable gear meshing with the fixed gear for rotating forwardly around the fixed gear when the door is closed and rotating reversely around the fixed gear when the door is opened; and

[0008] A transmission mechanism, wherein the input end and the output end of the transmission mechanism are respectively connected to the movable gear and the inner plate so as to drive the inner plate away from the outer plate when the movable gear rotates forward and to drive the inner plate toward the outer plate when the movable gear rotates reversely.

[0009] With this arrangement, the inner panel is automatically pressed against the door seal when the door is opened or closed. This has a simple structure and good synchronization. In addition, the meshing connection of the fixed gear and the moving gear can ensure that the pressure of the inner panel against the door seal is consistent each time the door is closed, which is convenient for technicians to debug. Since no electric drive or user-operated tightening is required, the entire door assembly has a high degree of automation. Furthermore, the gear ratio of the fixed gear and the moving gear can be adjusted to achieve quantitative adjustment of the pressure of the inner panel against the door seal, and the maintenance cost is low.

[0010] In one embodiment, the transmission mechanism includes a first slider slidably mounted on the outer plate, a second slider fixedly connected to the inner plate, and a conversion member providing the input end and transmission-connected to the first slider to drive the first slider to slide along the outer plate;

[0011] The first slider has a guide slope arranged obliquely to the outer plate along a sliding direction of the first slider, and the second slider abuts against the guide slope to move away from the outer plate under the drive of the first slider.

[0012] Such a setting is adapted to the thin thickness of the door assembly. The setting of the guiding slope also increases the force arm when driving the second slider to move, thereby reducing the resistance to opening and closing the door.

[0013] In one embodiment, the conversion member includes a transmission shaft, a conversion gear mounted on the transmission shaft, and a rack engaged with the conversion gear, the rack is fixedly connected to the first slider, and the movable gear is mounted on the transmission shaft.

[0014] With this arrangement, the transmission shaft is not only used to transmit the power of the moving gear to the conversion gear, but also facilitates the adjustment of the position of the conversion gear. When the positions of the first slider and the second slider change, it is only necessary to adjust the corresponding position of the conversion gear, and the power transmission path will not be interrupted. Therefore, the entire transmission mechanism is flexible to adjust and has strong adaptability.

[0015] In one embodiment, there are at least two movable gears, which are spaced apart and arranged on both sides of the conversion gear.

[0016] With this arrangement, the transmission shaft and the outer plate are evenly stressed, and deformation is minimal during long-term use.

[0017] In one embodiment, a first guide rail is provided on the side of the outer plate facing the inner plate, and the first slider includes a base plate portion and a sliding portion and a wedge-shaped portion respectively fixed on both sides of the base plate portion, the sliding portion can be slidably mounted on the first guide rail, and the guide slope is located on the side of the wedge-shaped portion facing away from the base plate portion.

[0018] With such arrangement, under the guidance of the first guide rail, the first sliding block slides smoothly and is not prone to tipping over or deflecting.

[0019] In one embodiment, the first sliding block further includes a stopper located on a side of the guiding inclined surface away from the outer plate and protruding from the guiding inclined surface.

[0020] With this arrangement, the second slider is limited by the stop portion to prevent the second slider from slipping off the guiding inclined surface.

[0021] In one embodiment, the second sliding block includes a base mounted on the inner plate and a roller mounted on an end of the base away from the inner plate, wherein the roller abuts against the guide inclined surface.

[0022] Such an arrangement increases the smoothness of the fit between the first slider and the second slider.

[0023] In one embodiment, the inner panel includes a panel body spaced apart from the outer panel and a connector extending from the panel body toward the outer panel. A second guide rail is further provided on the side of the outer panel facing the inner panel, and the connector is slidably mounted on the second guide rail.

[0024] With this arrangement, the second guide rail provides a preset direction for the movement of the inner panel, thereby increasing the stability of the movement of the inner panel.

[0025] In one embodiment, the second guide rail includes a track rod and a stop ring located at an end of the track rod away from the outer plate, the connector includes a connecting portion and a sleeve portion fixedly connected to a side of the connecting portion away from the plate body, the sleeve portion is movably sleeved on the track rod, and the stop ring is used to axially abut against the sleeve portion;

[0026] The door assembly further includes an elastic member located between the outer plate and the inner plate, with two ends of the elastic member respectively connected to the stop ring and the plate body.

[0027] In this way, the elastic member is arranged between the outer plate and the inner plate to increase the connection force, tighten the inner plate and the outer plate to each other, and prevent the inner plate from shaking relative to the outer plate.

[0028] The present application also provides a cooking device, comprising:

[0029] A box assembly, comprising an inner container body having an opening and a door seal mounted on the opening; and

[0030] Like the door assembly mentioned above, the door assembly is rotatably mounted on the inner container body and abuts against the door seal.

[0031] With such an arrangement, the door assembly provided by the present application is utilized, and the inner panel and the door seal can be further compressed when the door is closed, thereby avoiding and reducing the risk of steam leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic structural diagram of a cooking device in one embodiment provided in this application;

[0033] Figure 2 for Figure 1 Schematic diagram of the structure of the middle door assembly;

[0034] Figure 3 for Figure 2 A schematic diagram of a portion of the structure of the door assembly shown;

[0035] Figure 4 for Figure 3 A partial enlarged view of the X in the middle;

[0036] Figure 5 for Figure 3 A partial enlarged view of the Y position in the middle;

[0037] Figure 6 for Figure 3 A schematic structural diagram of the first slider;

[0038] Figure 7 for Figure 3 A schematic structural diagram of the second slider;

[0039] Figure 8 for Figure 2 Schematic diagram of the structure of the middle inner panel from another perspective.

[0040] Reference numerals:

[0041] 100. Door assembly; 10. Outer panel; 20. Inner panel; 21. Panel body; 22. Connecting body; 221. Connecting portion; 222. Sleeve portion; 30. Driving member; 31. Fixed gear; 32. Moving gear; 33. Connecting rod; 40. Transmission mechanism; 41. First slider; 4101. Guide slope; 411. Base plate portion; 412. Sliding portion; 413. Wedge portion; 414. Stop portion; 42. Second slider; 421. Base; 422. Roller; 43. Converter; 431. Drive shaft; 432. Converter gear; 433. Rack; 50. First guide rail; 60. Second guide rail; 61. Track rod; 62. Stop ring; 70. Elastic member; 200. Box assembly. DETAILED DESCRIPTION

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] Preventing steam leakage has always been a design challenge for cooking appliances. Currently, steam-bake and microwave cooking appliances in the cooking appliance market typically employ two approaches to prevent water and air leakage: 1. Continuous improvements to the door seal; 2. Manual tightening of the door seal during production. While continuous improvements to the door seal structure offer a one-to-one fit, they lack versatility, are costly, and require significant effort. Manual tightening in Option 2, however, can lead to loosening of the door seal due to frequent opening and closing of the door, resulting in water and air leakage, posing a safety hazard.

[0049] Based on this, it is necessary to provide a door assembly 100 and a cooking device that can actively increase the closing force and have low cost.

[0050] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 5 , Figure 1 This is a schematic structural diagram of a cooking device in an embodiment provided in this application. Figure 2 for Figure 1 A schematic structural diagram of the middle door assembly 100, Figure 3 for Figure 2 The partial structural diagram of the door assembly 100 is shown. Figure 5 for Figure 3The cooking device provided in the present application includes a box assembly 200 and a door assembly 100. The box assembly 200 includes an inner pot body with an opening and a door seal installed at the opening. The door assembly 100 is rotatably installed on the inner pot body and abuts against the door seal. The door assembly 100 includes an outer panel 10, an inner panel 20, a driving member 30 and a transmission mechanism 40. The inner panel 20 can be movably mounted on the outer panel 10 and is used to abut the door seal of the box assembly 200. The driving member 30 includes a fixed gear 31 and a moving gear 32. The fixed gear 31 is fixed to the box assembly 200, and the moving gear 32 is mounted on the outer panel 10. The moving gear 32 is engaged with the fixed gear 31. When the door is closed, the moving gear 32 rotates forward around the fixed gear 31, and when the door is opened, the moving gear 32 rotates reversely around the fixed gear 31. The input end and the output end of the transmission mechanism 40 are respectively connected to the moving gear 32 and the inner panel 20. When the moving gear 32 rotates forward, the transmission mechanism 40 drives the inner panel 20 away from the outer panel 10 to press the door seal. When the moving gear 32 rotates reversely, the transmission mechanism 40 drives the inner panel 20 close to the outer panel 10 and away from the door seal. In this way, the inner panel 20 is automatically pressed against the door seal when the door is opened or closed. The structure is simple and the synchronization is good. In addition, the meshing connection of the fixed gear 31 and the moving gear 32 can ensure that the pressure of the inner panel 20 on the door seal is consistent each time the door is closed, which is convenient for technicians to debug. Since no electric drive or user-interpreted pressure is required, the entire door assembly 100 has a high degree of automation. Furthermore, by adjusting the gear ratio of the fixed gear 31 and the moving gear 32, the pressure of the inner panel 20 on the door seal can be quantitatively adjusted, which has good versatility and low maintenance costs.

[0051] See also Figure 3 , Figure 3 for Figure 2 A partial structural diagram of the door assembly 100 is shown. Specifically, in one embodiment provided herein, the transmission mechanism 40 includes a first slider 41, a second slider 42, and a conversion member 43. The first slider 41 is slidably mounted on the outer panel 10, and the second slider 42 is fixedly connected to the inner panel 20. The conversion member 43 is transmission-connected to the first slider 41 and provides an input end to drive the first slider 41 to slide along the outer panel 10. The first slider 41 has a guide slope 4101 arranged obliquely to the outer panel 10 along the sliding direction of the first slider 41. The second slider 42 abuts against the guide slope 4101 to move away from the outer panel 10 under the drive of the first slider 41. In other words, the conversion member 43 is used to convert the rotation of the movable gear 32 into the sliding of the first slider 41 along the outer panel 10. Under the guidance of the guide slope 4101, the second slider 42 is forced to move away from the outer panel 10 or can move closer to the outer panel 10. This arrangement takes into account the thin thickness of the door assembly 100. The length of the guide slope 4101 along its own sliding direction is greater than the height of the guide slope 4101 along the thickness direction of the door assembly 100. The setting of this guide slope 4101 also increases the force arm when driving the second slider 42 to move, thereby reducing the resistance to opening and closing the door.

[0052] Please continue reading Figure 3 Furthermore, in one embodiment provided herein, the conversion member 43 includes a transmission shaft 431, a conversion gear 432, and a rack 433. The conversion gear 432 is mounted on the transmission shaft 431, the rack 433 is fixedly connected to the first slider 41, and the movable gear 32 is mounted on the transmission shaft 431. The transmission shaft 431 not only transmits power from the movable gear 32 to the conversion gear 432 but also facilitates adjustment of the position of the conversion gear 432. When the positions of the first and second sliders 41 and 42 are changed, only the corresponding position of the conversion gear 432 needs to be adjusted, without interrupting the power transmission path. This provides flexible adjustment and adaptability for the entire transmission mechanism 40. Furthermore, the rack 433 and the power gear occupy minimal space within the door assembly 100, facilitating optimization of the internal space of the door assembly 100. Optionally, in one embodiment provided herein, there are at least two movable gears 32, spaced apart on either side of the conversion gear 432. This ensures that the transmission shaft 431 and the outer panel 10 are evenly stressed, minimizing deformation during long-term use.

[0053] Please refer again Figure 2 、 Figure 3 and Figure 5 Optionally, in order to ensure precise meshing of the moving gear 32 and the fixed gear 31, the door assembly 100 also includes a connecting rod 33 whose two ends are rotatably connected to the transmission shaft 431 and the fixed gear 31 respectively. It can be understood that the connecting rod 33 can also be connected to the box assembly 200 as long as it does not affect the rotation of the moving gear 32 around the fixed gear 31.

[0054] See also Figure 3 and Figure 6 , Figure 6 for Figure 3 In the structural diagram of the first slider 41, in order to ensure the smooth sliding of the first slider 41, in one embodiment provided in the present application, a first guide rail 50 is provided on the side of the outer plate 10 facing the inner plate 20. The first slider 41 includes a base plate portion 411 and a sliding portion 412 and a wedge-shaped portion 413 respectively located on the front and back sides of the base plate portion 411. The sliding portion 412 is slidably mounted on the first guide rail 50, and the guiding inclined surface 4101 is located on the side of the wedge-shaped portion 413 facing away from the base plate portion 411. Specifically, the number of the first guide rails 50 is a pair and they are arranged at intervals. It is understandable that in other embodiments, the number of the first guide rail 50 can also be one and the cross-section of the first guide rail 50 can also be non-circular, which can also ensure the smooth sliding of the first slider 41.

[0055] See also Figure 3 and Figure 6Optionally, the first slider 41 further includes a stopper 414, which is located on a side of the guide slope 4101 away from the outer panel 10 and protrudes from the guide slope 4101. In this way, the stopper 414 limits the position of the second slider 42 to prevent the second slider 42 from slipping off the guide slope 4101.

[0056] See also Figure 3 and Figure 7 , Figure 7 for Figure 3 Schematic diagram of the structure of the second slider 42. Optionally, in order to increase the smoothness of the fit between the first slider 41 and the second slider 42, the second slider 42 includes a base 421 and a roller 422 installed on the base 421, and the base 421 is fixedly connected to the inner plate 20, and the roller 422 abuts against the guide slope 4101.

[0057] See also Figure 3 、 Figure 4 and Figure 8 , Figure 4 for Figure 3 A partial enlarged view of the X in the middle. Figure 8 for Figure 2 A schematic diagram of the structure of the inner panel 20 from another perspective. Optionally, to enhance the smoothness of the movement of the inner panel 20, in one embodiment provided herein, a second guide rail 60 is further provided on the side of the outer panel 10 facing the inner panel 20. The inner panel 20 includes a panel body 21 and a connector 22 extending from the panel body 21 toward the outer panel 10. The connector 22 is slidably mounted on the second guide rail 60. Specifically, the extension direction of the second guide rail 60 matches the direction in which the inner panel 20 actually needs to move. Preferably, the extension direction of the second guide rail 60 is perpendicular to the surface of the outer panel 10. The second guide rail 60 includes a track rod 61 and a stop ring 62 located at the end of the track rod 61 away from the outer panel 10. The connector 22 includes a connecting portion 221 and a sleeve portion 222. The connecting portion 221 is fixedly connected to the panel body 21, and the sleeve portion 222 is fixedly connected to the side of the connecting portion 221 away from the panel body 21. The sleeve portion 222 is movably mounted on the track rod 61, and the stop ring 62 is used to axially abut the sleeve portion 222. In order to prevent the inner panel 20 from shaking, the door assembly 100 also includes an elastic member 70 located between the outer panel 10 and the inner panel 20. For example, the two ends of the elastic member 70 are respectively connected to the stop ring 62 and the panel body 21. The elastic member 70 tightens the inner panel 20 and the outer panel 10 against each other to prevent the inner panel 20 from shaking relative to the outer panel 10.

[0058] 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.

[0059] 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 assembly, rotatably connected to a box assembly, characterized in that: include: outer panel(10); an inner plate (20), the inner plate (20) being movably mounted on the outer plate (10) and being used to abut against a door seal of the box assembly (200); A driving member (30) comprising a fixed gear (31) fixed to the box assembly (200) and a movable gear (32) mounted on the outer plate (10), wherein the movable gear (32) is engaged with the fixed gear (31) and is configured to rotate forwardly around the fixed gear (31) when the door is closed and to rotate backwardly around the fixed gear (31) when the door is opened; and A transmission mechanism (40), wherein an input end and an output end of the transmission mechanism (40) are respectively connected to the movable gear (32) and the inner plate (20) so as to drive the inner plate (20) away from the outer plate (10) when the movable gear (32) rotates in the forward direction, and to drive the inner plate (20) toward the outer plate (10) when the movable gear (32) rotates in the reverse direction.

2. The door assembly according to claim 1, wherein: The transmission mechanism (40) includes a first slider (41) slidably mounted on the outer plate (10), a second slider (42) fixedly connected to the inner plate (20), and a conversion member (43) providing the input end and transmission-connected to the first slider (41) to drive the first slider (41) to slide along the outer plate (10); The first slider (41) has a guide slope (4101) arranged along the sliding direction of the first slider (41) and inclined relative to the outer plate (10), and the second slider (42) abuts against the guide slope (4101) to move away from the outer plate (10) under the drive of the first slider (41).

3. The door assembly according to claim 2, wherein: The conversion member (43) comprises a transmission shaft (431), a conversion gear (432) mounted on the transmission shaft (431), and a rack (433) meshed with the conversion gear (432); the rack (433) is fixedly connected to the first slider (41); and the movable gear (32) is mounted on the transmission shaft (431).

4. The door assembly according to claim 3, wherein: The number of the movable gears (32) is at least two and they are arranged at intervals on both sides of the conversion gear (432).

5. The door assembly according to claim 2, wherein: A first guide rail (50) is provided on a side of the outer plate (10) facing the inner plate (20), and the first slider (41) includes a base plate portion (411) and a sliding portion (412) and a wedge-shaped portion (413) respectively fixed on both sides of the base plate portion (411). The sliding portion (412) is slidably mounted on the first guide rail (50), and the guiding inclined surface (4101) is located on a side of the wedge-shaped portion (413) facing away from the base plate portion (411).

6. The door assembly according to claim 2, wherein: The first sliding block (41) further comprises a stopper (414) located on a side of the guide slope (4101) away from the outer plate (10) and protruding from the guide slope (4101).

7. The door assembly according to claim 2, wherein: The second slider (42) comprises a base (421) mounted on the inner plate (20) and a roller (422) mounted on an end of the base (421) away from the inner plate (20), wherein the roller (422) abuts against the guide slope (4101).

8. The door assembly according to claim 1, wherein: The inner plate (20) comprises a plate body (21) spaced apart from the outer plate (10) and a connecting body (22) extending from the plate body (21) toward the outer plate (10). A second guide rail (60) is further provided on a side of the outer plate (10) facing the inner plate (20), and the connecting body (22) is slidably mounted on the second guide rail (60).

9. The door assembly according to claim 8, wherein: The second guide rail (60) includes a track rod (61) and a stop ring (62) located at one end of the track rod (61) away from the outer plate (10); the connecting body (22) includes a connecting portion (221) and a sleeve portion (222) fixedly connected to a side of the connecting portion (221) away from the plate body (21); the sleeve portion (222) is movably sleeved on the track rod (61); and the stop ring (62) is used to axially abut the sleeve portion (222); The door assembly (100) further comprises an elastic member (70) located between the outer plate (10) and the inner plate (20), with two ends of the elastic member (70) respectively connected to the stop ring (62) and the plate body (21).

10. A cooking device, characterized in that include: A box assembly (200) comprises an inner container body having an opening and a door seal installed at the opening; and The door assembly (100) according to any one of claims 1 to 9, wherein the door assembly (100) is rotatably mounted on the inner container body and abuts against the door seal.

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