Cooking apparatus
The automatic opening of the cooking equipment door is achieved by lever mechanical transmission, which solves the problems of hot doors and high costs, and reduces the overall cost of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO FOTILE KITCHEN WARE CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-06-26
AI Technical Summary
Existing cooking equipment doors become too hot to handle after being heated to a high temperature, and automatic door opening devices require high-power drive sources, increasing costs.
The system employs lever-mechanical transmission, using an electric push rod, lever, crank, and connecting rod assembly to achieve automatic door opening, thus reducing the drive power requirement.
The automatic door opening function reduces the manufacturing and operating costs of cooking equipment.
Smart Images
Figure CN224403382U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cooking equipment technology, and in particular to cooking equipment. Background Technology
[0002] Steam ovens, regular ovens, and steam ovens generate very high temperatures inside their enclosures during operation. After cooking, the doors of these appliances are typically very hot. Currently, users usually open and close the doors manually, which poses a risk of burns due to the hot doors. Some appliances are equipped with electric door openers, but these typically require high-powered drives to ensure automatic opening, increasing both manufacturing and operating costs. Utility Model Content
[0003] Therefore, it is necessary to provide a cooking device to address the above problems.
[0004] To address the above problems, this application provides the following technical solution:
[0005] A cooking device comprising:
[0006] Box;
[0007] The inner liner is located in the box body and has a cooking cavity with an opening facing forward;
[0008] The door, rotatably connected to the housing, is used to open and close the opening; and
[0009] A door opening device includes an electric push rod, a base, a bracket, a lever, and a door opening mechanism. The electric push rod includes an outer tube and a push rod. The outer tube is fixed to the housing, and the push rod can move linearly relative to the outer tube. The base is fixedly connected to the housing. The bracket is fixedly connected to the base. The lever is rotatably connected to the bracket, and the two ends of the lever are a first end and a second end, respectively. The first end is located below the push rod and on the movement path of the push rod. The door opening mechanism includes a crank, a connecting rod assembly, and a swing arm. The swing arm is fixedly connected to the door body. The two ends of the crank are a third end and a fourth end, respectively. The portion of the crank near the third end forms an overlapping part, which overlaps with the second end. The fourth end is rotatably connected to the base. The connecting rod assembly is used to connect the swing arm and the crank so that the swing arm can rotate with the rotation of the crank.
[0010] This cooking equipment has at least the following beneficial effects:
[0011] During the door opening process, the electric push rod pushes the first end downward, causing the lever to rotate relative to the bracket. The second end then moves upward, pushing the overlapping part upward. This causes the crank to rotate relative to the seat, and the swing arm to rotate, thus pushing the door open, achieving automatic door opening. By using a lever-based, labor-saving mechanical transmission, even a low-power electric push rod can drive the door to open automatically. Therefore, this cooking equipment can use a low-power electric push rod, reducing the manufacturing and operating costs of the equipment.
[0012] In one embodiment, the linkage assembly includes a first link, a second link, and a third link. The two ends of the first link are rotatably connected to the crank and the rocker arm, respectively. The two ends of the second link are rotatably connected to the rocker arm and the third link, respectively. The pivots of the first link relative to the rocker arm and the pivots of the second link relative to the rocker arm are spaced apart. The third link is rotatably connected to the seat and the first link. The pivot of the third link relative to the second link is located between the pivots of the third link relative to the seat and the pivots of the third link relative to the first link.
[0013] With this configuration, as the push rod pushes the first end downward, the swing arm rotates through the transmission of levers, cranks, first connecting rods, second connecting rods, and third connecting rods, thereby pushing the door open and achieving automatic door opening.
[0014] In one embodiment, the bottom side of the overlap arches upward to form an upward arch.
[0015] This design helps to ensure that the overlap is stably attached to the second end.
[0016] In one embodiment, the lever includes a first limiting plate, a second limiting plate, and a cylindrical shaft. The first limiting plate and the second limiting plate are disposed opposite to each other. The cylindrical shaft passes through the first limiting plate and the second limiting plate and participates in forming the second end of the lever. The overlapping portion is located between the first limiting plate and the second limiting plate and overlaps the circumferential surface of the cylindrical shaft.
[0017] This design has several advantages. First, the cylindrical shaft reduces the contact area between the overlapping part and the second end, which helps reduce friction between them and ensures the normal operation of the door opening device. Second, the first and second limiting plates limit the overlapping part, preventing it from detaching from the cylindrical shaft along its axis and ensuring the stable connection of the overlapping part to the second end.
[0018] In one embodiment, the cylindrical shaft is rotatably connected to the first limiting plate and the second limiting plate.
[0019] With this configuration, as the cylindrical shaft pushes the overlapping part, the cylindrical shaft rolls relative to the overlapping part, and the friction between the cylindrical shaft and the overlapping part is rolling friction. This helps to reduce the friction between the overlapping part and the second end, and helps to ensure the normal operation of the door opening device.
[0020] In one embodiment, the difference between the gap between the first limiting plate and the second limiting plate and the thickness of the overlapping portion is less than or equal to 1 mm.
[0021] This design helps to improve the limiting effect of the first and second limiting plates on the overlapping part, helps to ensure that the overlapping part is in the expected position, and helps to ensure that the door opening device works normally.
[0022] In one embodiment, the electric actuator is vertically arranged, and the lever, the crank, the connecting rod assembly, and the swing arm are arranged sequentially along the horizontal direction.
[0023] With this configuration, the force exerted by the push rod on the lever is roughly perpendicular to the lever, which helps to reduce the thrust required by the electric push rod, allows the cooking equipment to use a lower power drive source, and helps to reduce the manufacturing and operating costs of the cooking equipment.
[0024] In one embodiment, the electric push rod is spaced apart from the inner liner.
[0025] This design helps protect the electric actuator.
[0026] In one embodiment, the electric actuator is located behind the inner liner.
[0027] This configuration provides ample space for arranging levers, cranks, connecting rod assemblies, and swing arms in the front-to-back direction.
[0028] In one embodiment, there are two door opening devices, which are located on the left and right sides of the inner liner, respectively.
[0029] This configuration, with the two door opening mechanisms working together, helps ensure a smooth automatic door opening process. Attached Figure Description
[0030] Figure 1 This is a perspective view of a cooking apparatus according to an embodiment of this application;
[0031] Figure 2 for Figure 1 A 3D view of the cooking equipment after the door has been removed;
[0032] Figure 3 for Figure 2 A three-dimensional schematic diagram of the middle section structure;
[0033] Figure 4 for Figure 3 A three-dimensional schematic diagram of the middle section structure;
[0034] Figure 5 for Figure 4 Enlarged view of point A in the middle;
[0035] Figure 6 for Figure 4 A schematic diagram of the middle section structure;
[0036] Figure 7 for Figure 6 A schematic diagram of the middle section structure;
[0037] Figure 8 for Figure 7 An exploded view of the structure shown;
[0038] Figure 9 for Figure 8 A three-dimensional schematic diagram of the structure shown from another perspective.
[0039] Figure label:
[0040] 1. Cabinet; 2. Inner liner; 21. Cooking cavity; 211. Opening; 3. Door; 4. Door opening device; 41. Electric push rod; 411. Outer tube; 412. Push rod; 42. Seat; 43. Bracket; 44. Lever; 441. First end; 442. Second end; 443. First limiting plate; 444. Second limiting plate; 445. Cylindrical shaft; 45. Door opening mechanism; 451. Crank; 4511. Third end; 4512. Fourth end; 4513. Overlapping part; 452. Linkage assembly; 4521. First link; 4522. Second link; 4523. Third link; 453. Swing arm; 46. Damper. Detailed Implementation
[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0046] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening 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 possible implementation.
[0047] See Figures 1 to 9 This application provides a cooking device, which includes a housing 1, an inner liner 2, a door 3, and a door opening device 4. The inner liner 2 is located in the housing 1 and has a cooking cavity 21 with an opening 211 facing forward, into which food is placed for cooking. The door 3 is rotatably connected to the housing 1 to open and close the opening 211. The door opening device 4 includes an electric push rod 41, a base 42, a bracket 43, a lever 44, and a door opening mechanism 45. The electric push rod 41 includes an outer tube 411 and a push rod 412. The outer tube 411 is fixed to the housing 1, and the push rod 412 can move linearly relative to the outer tube 411. The base 42 is fixedly connected to the housing 1. The bracket 43 is fixedly connected to the base 42. The lever 44 is rotatably connected to the bracket 43. The two ends of the lever 44 are a first end 441 and a second end 442, respectively. The first end 441 is located below the push rod 412 and is located within the movement range of the push rod 412. On the path; the door opening mechanism 45 includes a crank 451, a connecting rod assembly 452 and a swing arm 453, the swing arm 453 is fixedly connected to the door body 3; the two ends of the crank 451 are the third end 4511 and the fourth end 4512, respectively, and the part of the crank 451 near the third end 4511 forms an overlapping part 4513, the overlapping part 4513 overlaps with the second end 442, and the fourth end 4512 is rotatably connected to the seat body 42; the connecting rod assembly 452 is used to connect the swing arm 453 and the crank 451 so that the swing arm 453 can rotate with the rotation of the crank 451.
[0048] During the opening process, the push rod 412 of the electric push rod 41 pushes the first end 441 downward, causing the lever 44 to rotate relative to the bracket 43. The second end 442 then moves upward, pushing the overlapping part 4513 upward. The crank 451 rotates relative to the seat 42, causing the swing arm 453 to rotate and thus pushing the door 3 open, thereby achieving automatic door opening. By using this labor-saving mechanical transmission of the lever 44, even a relatively low-power electric push rod 41 can drive the door 3 to open automatically. Therefore, this cooking device can use a low-power electric push rod 41, reducing the manufacturing and operating costs of the cooking device.
[0049] For example, the cooking appliance is a steamer, oven, or steam oven.
[0050] See Figures 6 to 7The connecting rod assembly 452 includes a first connecting rod 4521, a second connecting rod 4522, and a third connecting rod 4523. The two ends of the first connecting rod 4521 are rotatably connected to the crank 451 and the rocker arm 453, respectively. The two ends of the second connecting rod 4522 are rotatably connected to the rocker arm 453 and the third connecting rod 4523, respectively. The pivot of the first connecting rod 4521 relative to the rocker arm 453 and the pivot of the second connecting rod 4522 relative to the rocker arm 453 are spaced apart. The third connecting rod 4523 is rotatably connected to the seat 42 and the first connecting rod 4521. The pivot of the third connecting rod 4523 relative to the second connecting rod 4522 is located between the pivot of the third connecting rod 4523 relative to the seat 42 and the pivot of the third connecting rod 4523 relative to the first connecting rod 4521. In this way, as the push rod 412 pushes the first end 441 downward, the swing arm 453 will rotate through the transmission of the lever 44, crank 451, first connecting rod 4521, second connecting rod 4522 and third connecting rod 4523, thereby pushing the door 3 open, thus realizing automatic door opening.
[0051] See Figure 8 The bottom side of the overlapping portion 4513 arches upward to form an upward arch. This facilitates the stable overlapping of the overlapping portion 4513 to the second end 442.
[0052] See Figure 9 The lever 44 includes a first limiting plate 443, a second limiting plate 444, and a cylindrical shaft 445. The first limiting plate 443 and the second limiting plate 444 are arranged opposite to each other. The cylindrical shaft 445 passes through the first limiting plate 443 and the second limiting plate 444. The cylindrical shaft 445 participates in forming the second end 442 of the lever 44. The overlapping part 4513 is located between the first limiting plate 443 and the second limiting plate 444 and overlaps the circumferential surface of the cylindrical shaft 445. On the one hand, the cylindrical shaft 445 reduces the contact area between the overlapping part 4513 and the second end 442, which helps to reduce the friction between the overlapping part 4513 and the second end 442 and helps to ensure the normal operation of the door opening device 4. On the other hand, the first limiting plate 443 and the second limiting plate 444 limit the overlapping part 4513, which can prevent the overlapping part 4513 from detaching from the cylindrical shaft 445 along the axis of the cylindrical shaft 445, which helps the overlapping part 4513 to be stably overlapped with the second end 442.
[0053] See Figure 9 The cylindrical shaft 445 is rotatably connected to the first limiting plate 443 and the second limiting plate 444. In this way, as the cylindrical shaft 445 pushes the overlapping part 4513, the cylindrical shaft 445 rolls relative to the overlapping part 4513, and the friction between the cylindrical shaft 445 and the overlapping part 4513 is rolling friction. This helps to reduce the friction between the overlapping part 4513 and the second end 442, and helps to ensure the normal operation of the door opening device 4.
[0054] Preferably, the difference between the gap between the first limiting plate 443 and the second limiting plate 444 and the thickness of the overlapping portion 4513 is less than or equal to 1 mm. This helps to improve the limiting effect of the first limiting plate 443 and the second limiting plate 444 on the overlapping portion 4513, helps to ensure that the overlapping portion 4513 is in the expected position, and helps to ensure that the door opening device 4 works normally.
[0055] See Figure 3 and Figure 4 The electric push rod 41 is vertically positioned, while the lever 44, crank 451, connecting rod assembly 452, and swing arm 453 are arranged sequentially along the horizontal direction. In this way, the force exerted by the push rod 412 on the lever 44 is approximately perpendicular to the lever 44, which helps to reduce the thrust required by the electric push rod 41, allows the cooking equipment to use a lower power drive source, and helps to reduce the manufacturing and operating costs of the cooking equipment.
[0056] The temperature of inner liner 2 is very high, please refer to... Figure 3 To protect the electric push rod 41, the electric push rod 41 is spaced apart from the inner liner 2.
[0057] See Figure 3 The electric actuator 41 is located behind the inner liner 2. This provides ample space in the front-to-back direction for arranging the lever 44, crank 451, connecting rod assembly 452, and swing arm 453.
[0058] See Figure 2 There are two door opening devices 4, located on the left and right sides of the inner liner 2, respectively. The two door opening devices 4 work together to ensure a smooth automatic door opening process.
[0059] See Figure 6 The door opening device 4 also includes a damper 46. (Comparison) Figure 4 and Figure 6 The damper 46 is disposed on the seat 42, and one end of the damper 46 abuts against the bottom side of the crank 451. During the opening process of the door opening device 4, the bottom side of the crank 451 continuously presses against the damper 46.
[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.
[0061] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.
Claims
1. A cooking apparatus, characterized by, include: Box; The inner liner is located in the box body and has a cooking cavity with an opening facing forward; The door is rotatably connected to the housing to open and close the opening; and A door opening device includes an electric push rod, a base, a bracket, a lever, and a door opening mechanism. The electric push rod includes an outer tube and a push rod. The outer tube is fixed to the housing, and the push rod can move linearly relative to the outer tube. The base is fixedly connected to the housing, and the bracket is fixedly connected to the base. The lever is rotatably connected to the bracket, and the two ends of the lever are a first end and a second end, respectively. The first end is located below the push rod and on the movement path of the push rod. The door opening mechanism includes a crank, a connecting rod assembly, and a swing arm. The swing arm is fixedly connected to the door body. The two ends of the crank are a third end and a fourth end, respectively. The portion of the crank near the third end forms an overlapping part, which overlaps with the second end. The fourth end is rotatably connected to the seat. The connecting rod assembly is used to connect the swing arm and the crank so that the swing arm can rotate with the rotation of the crank.
2. The cooking apparatus according to claim 1, characterized in that, The linkage assembly includes a first link, a second link, and a third link. The two ends of the first link are rotatably connected to the crank and the swing arm, respectively. The two ends of the second link are rotatably connected to the swing arm and the third link, respectively. The pivots of the first link relative to the swing arm and the pivots of the second link relative to the swing arm are spaced apart. The third link is rotatably connected to the seat and the first link. The pivot of the third link relative to the second link is located between the pivots of the third link relative to the seat and the pivots of the third link relative to the first link.
3. The cooking apparatus according to claim 1, characterized in that, The bottom side of the overlapping part arches upward to form an upward arch.
4. The cooking apparatus according to claim 3, characterized in that, The lever includes a first limiting plate, a second limiting plate, and a cylindrical shaft. The first limiting plate and the second limiting plate are arranged opposite to each other. The cylindrical shaft passes through the first limiting plate and the second limiting plate and participates in forming the second end of the lever. The overlapping part is located between the first limiting plate and the second limiting plate and overlaps the circumferential surface of the cylindrical shaft.
5. The cooking apparatus according to claim 4, characterized in that, The cylindrical shaft is rotatably connected to the first limiting plate and the second limiting plate.
6. The cooking apparatus according to claim 4, wherein The difference between the gap between the first limiting plate and the second limiting plate and the thickness of the overlapping portion is less than or equal to 1 mm.
7. The cooking apparatus according to claim 1, wherein The electric push rod is vertically arranged, and the lever, the crank, the connecting rod assembly, and the swing arm are arranged sequentially along the horizontal direction.
8. The cooking apparatus according to claim 7, characterized in that, The electric push rod is spaced apart from the inner liner.
9. The cooking apparatus according to claim 8, characterized in that, The electric push rod is located behind the inner liner.
10. The cooking apparatus according to claim 1, wherein There are two door opening devices, which are located on the left and right sides of the inner liner, respectively.