Microwave oven door assembly opening and closing mechanism and cooking device

Abstract

The utility model relates to the technical field of cooking equipment, and provides a microwave oven door assembly opening and closing mechanism and a cooking device.The microwave oven door assembly opening and closing mechanism comprises a main body structure, a door assembly and a limiting and locking device, and the door assembly is arranged at the front end of the main body structure and can rotate relative to the main body structure in a hinged mode; the door assembly is locked with the main body structure through a door hook in a closed state, the limiting and locking device comprises a locking working condition and an opening working condition, when the limiting and locking device is in the locking working condition, the door hook is locked by the limiting and locking device, and the door assembly and the main body structure are kept in a relative locking state. According to the opening and closing mechanism for the microwave oven door assembly, the limiting locking device is introduced, so that the microwave oven door assembly is firmly locked in a closed state, the structure is compact, the operation is simple, the assembly and the disassembly are easy, the maintenance and the replacement are convenient, and the use cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cooking equipment, especially to a microwave oven door assembly opening and closing mechanism and cooking device. BACKGROUND

[0002] In the field of modern kitchen appliances, microwave ovens, as convenient and efficient cooking equipment, have been widely used in households and catering places. With the continuous improvement of consumers' requirements for the safety and convenience of microwave ovens, the design of the door assembly opening and closing mechanism of microwave ovens has gradually become the focus of manufacturers. However, the door assembly opening and closing mechanism of the existing microwave ovens, especially the pull-down door type microwave ovens, has significant safety hazards in the door opening mechanism, especially the risk of scalding caused by children's misoperation.

[0003] The door assembly opening and closing mechanism of the existing pull-down door type microwave ovens is usually designed relatively simply, with only one level of restriction, i.e. only one step operation (pulling the door handle outward) is needed to achieve door opening. Although this design is convenient for adults to quickly and conveniently open the microwave oven door, it poses a great safety hazard for children who are curious and lack safety awareness.

[0004] Specifically, children may easily touch the door handle of the microwave oven during play or exploration, and easily open the microwave oven door due to the simple design of the door body opening and closing mechanism. During the cooking process, the microwave oven generates high temperature inside, and once the child opens the microwave oven door, it may come into contact with the high-temperature cooking cavity or food, thereby causing accidents such as scalding.

[0005] Although some existing technologies provide safety devices on the door handle, such as child-resistant covers or sliders, such designs are often easily bypassed or damaged by children, and cannot provide long-term effective safety protection. The skilled person in the art has not found an effective balance between the safety and convenience of the microwave oven door assembly, and further research and improvement are needed to meet the growing market demand and users' expectations for safety.

[0006] Therefore, the present application is proposed. UTILITY MODEL CONTENT

[0007] Therefore, the utility model provides a microwave oven door assembly opening and closing mechanism and cooking device, aiming to solve the deficiencies of the existing microwave oven door assembly opening and closing mechanism in safety and convenience.

[0008] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0009] A microwave oven door assembly opening and closing mechanism, comprising:

[0010] a main body structure;

[0011] a door assembly arranged at a front end of the main body structure and capable of being hinged to rotate relative to the main body structure, the door assembly being locked with the main body structure by a door hook in a closed state;

[0012] a limiting and locking device, including a locking state and an opening state, in the opening state, the door assembly can be opened relative to the main body structure under the action of external force; in the locking state, the door hook is locked by the limiting and locking device, and the door assembly and the main body structure are kept in a relative locking state.

[0013] Further, the door hook is arranged on the door assembly, the limiting and locking device is arranged on the main body structure, the door hook can be locked to the main body structure when the door assembly is integrally rotated to the closed state, and the limiting and locking device can limit the door hook from being separated from the main body structure in the locking state.

[0014] Further, the limiting and locking device includes a switch bracket, an electromagnetic valve and a rotating support are arranged on the switch bracket, in the locking state of the limiting and locking device, the telescopic rod of the electromagnetic valve is extended and prevents the rotating support from rotating, and the rotating support can lock the door hook from being separated from the main body structure.

[0015] Further, the rotating support includes a rotating body, the rotating body is rotatably installed on the rotating shaft of the switch bracket through a hinged hole, a first arm and a second arm are arranged on the rotating body, the first arm can be stopped and limited by the telescopic rod in the locking state of the limiting and locking device, and the second arm can abut against and limit the door hook to prevent it from being pulled out in the locking state of the limiting and locking device.

[0016] Further, a first micro switch is arranged on the switch bracket, a third arm is arranged on the rotating body, and in the locking state of the limiting and locking device, the third arm abuts against the first micro switch, and the first micro switch is closed.

[0017] Further, the door hook includes a door hook body, the door hook body is connected with the door assembly through a first connecting part, a door hook hook part is arranged at one end of the door hook body away from the first connecting part, a limiting protrusion is arranged on the door hook hook part, and in the locking state of the limiting and locking device, the limiting protrusion is limited by the second arm, and the door hook hook part abuts against the switch bracket.

[0018] Further, in the process of opening the door by pulling down and rotating the door assembly, the door hook integrally rotates with the door assembly and can be guided to be released from the limiting of the second arm on the rotating support and the limiting of the switch bracket.

[0019] Further, a second micro switch is arranged on the switch bracket, the second micro switch abuts against the door hook hook portion in the closed state of the door assembly, and the second micro switch is opened when the door hook hook portion is separated from the switch bracket.

[0020] Further, a telescopic rod hole is arranged on the switch bracket, and the telescopic rod can extend out of or retract into the telescopic rod hole, for locking or unlocking the rotating support.

[0021] Compared with the prior art, the microwave oven door assembly opening and closing mechanism has the following advantages:

[0022] (1) The microwave oven door assembly opening and closing mechanism has the following advantages:

[0023] (2) The microwave oven door assembly opening and closing mechanism has the following advantages:

[0024] Another purpose of the present application is to provide a cooking device, wherein the microwave oven door assembly opening and closing mechanism is arranged on the cooking device.

[0025] The cooking device has the same advantages as the microwave oven door assembly opening and closing mechanism described above, and will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and the illustrative embodiments of the present application and their description serve the purpose of explaining the present application. The accompanying drawings should not be construed as an inappropriate limitation on the present application. In the drawings:

[0027] Fig. 1 FIG. 1 is a structural schematic view of a microwave oven door assembly opening and closing mechanism according to an embodiment of the present application;

[0028] Fig. 2 FIG. 2 is a structural schematic view of a limiting and locking device and a door hook in a closed state according to an embodiment of the present application;

[0029] Fig. 3 FIG. 3 is a structural schematic view of a limiting and locking device and a door hook in an open state according to an embodiment of the present application;

[0030] Fig. 4 The explosion structure schematic view of the switch bracket, the electromagnetic valve, the rotary support and the micro switch is shown in the embodiment of the utility model.

[0031] Mark explanation:

[0032] 100-main body structure;200-door assembly;300-limiting locking device;1-switch bracket;2-electromagnetic valve;3-telescopic rod;4-rotary support;401-rotary main body;402-first arm;403-second arm;404-third arm;405-hinge hole;5-door hook;501-door hook main body;502-first connecting part;503-door hook hook part;504-limiting convex point;6-first micro switch;7-second micro switch;8-rotary shaft;9-telescopic rod hole. Specific implementation

[0033] In order to make the technical means and achieve the purpose and effect of the utility model easy to understand, the embodiments of the utility model are described in detail below in combination with specific drawings.

[0034] It should be noted that all the terms for indicating direction and position in the utility model, such as "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inner", "outer", "top", "low", "transverse", "longitudinal", "center", etc. are only used to explain the relative position relationship, connection condition, etc. between components in a certain state (as shown in the drawings), and are only for the convenience of describing the utility model, and do not require the utility model to be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. In addition, the description of "first", "second" and the like in the utility model is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features.

[0035] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected;It can be mechanical connection;It can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] As shown in Figs. 1-4 The present application discloses a microwave oven door assembly opening and closing mechanism, comprising:

[0038] The main body structure 100,

[0039] The door assembly 200 is arranged at the front end of the main body structure 100 and can be hinged to rotate relative to the main body structure 100, and the door assembly 200 is locked with the main body structure 100 by the door hook 5 in the closed state;

[0040] The limiting and locking device 300 includes a locking working condition and an opening working condition, and in the opening working condition, the door assembly 200 can be opened and rotated relative to the main body structure 100 under the action of external force; in the locking working condition, the door hook 5 is locked by the limiting and locking device 300, and the door assembly 200 and the main body structure 100 remain in a relative locking state.

[0041] The present application discloses a microwave oven door assembly opening and closing mechanism, by introducing a limiting and locking device 300 capable of locking the door hook 5, in the example of the present application, the door hook 5 can be arranged on the main body structure 100 for cooperation and locking after the door assembly 200 is rotated to the closed position, the door hook 5 can also be arranged on the door assembly 200 for cooperation and locking with the main body structure 100 after the door assembly 200 is integrally rotated to the closed position, in normal use, the limiting and locking device 300 is in the locking working condition, at this time the door assembly 200 is tightly locked with the main body structure 100 through the door hook 5, ensuring that the door assembly remains closed during the operation of the microwave oven, effectively preventing heat loss and external interference; when the user needs to open the microwave oven door, the limiting and locking device 300 must be switched from the locking working condition to the opening working condition, which usually requires a certain force or specific unlocking steps, such as pressing the unlocking button or rotating the unlocking switch. After the limiting and locking device 300 is in the opening working condition, the door assembly 200 can be hinged to rotate relative to the main body structure 100 under the action of external force, such as pulling the door handle, so as to realize smooth opening of the microwave oven door.

[0042] The application discloses a microwave oven door assembly opening and closing mechanism, which can firmly lock the door assembly 200 and the main body structure 100 in the locking state by increasing the limiting and locking device 300, so that the door assembly can be effectively prevented from being accidentally opened in the case of high temperature in the microwave oven, the children can be prevented from contacting the high-temperature cooking cavity or food, and the risk of accidents such as scalding is greatly reduced, the safety is maintained, and the convenience of adult use is also considered.

[0043] As a preferred example of the application, the door hook 5 is arranged on the door assembly 200, and the limiting and locking device 300 is arranged on the main body structure 100. The door hook 5 can be locked on the main body structure 100 when the door assembly 200 is integrally rotated to the closed state. The limiting and locking device 300 can limit the door hook 5 from being separated from the main body structure 100 in the locking state. The design realizes the double locking mechanism of the microwave oven door assembly 200 by combining the door hook 5 and the limiting and locking device 300. The door hook 5 provides preliminary mechanical locking, and the limiting and locking device 300 provides additional safety protection, which effectively prevents the door assembly 200 from being accidentally opened due to external factors (such as child misoperation, vibration and the like) during the working process of the microwave oven. In the example of the application, the limiting and locking device 300 can ensure that the door hook 5 cannot freely move or be separated in the locking state through physical blocking, electromagnetic adsorption or other ways, so that the closed state of the door assembly 200 is maintained. When the user needs to open the door assembly 200, the limiting and locking device 300 must be first unlocked, so that it is switched from the locking state to the opening state. At this time, the door assembly 200 can drive the door hook 5 to be separated from the main body structure 100 under the action of external force, and the door assembly 200 is opened.

[0044] As a preferred example of the application, the limiting and locking device 300 includes a switch bracket 1, an electromagnetic valve 2 and a rotating support 4 are arranged on the switch bracket 1. In the locking state of the limiting and locking device 300, the telescopic rod 3 of the electromagnetic valve 2 extends and prevents the rotating support 4 from rotating, and the rotating support 4 can lock the door hook 5 and the main body structure 100 from being separated. In the example of the application, the limiting and locking device 300 includes a switch bracket 1 as the basic support structure of the whole device. The electromagnetic valve 2 and the rotating support 4 are installed on the switch bracket 1, and the two components cooperatively realize the locking function. When the limiting and locking device 300 is in the locking state, the electromagnetic valve 2 receives a signal and is activated, and the telescopic rod 3 in the electromagnetic valve 2 extends. The extended telescopic rod 3 can abut against the rotating support 4, so that the rotating support 4 is prevented from rotating. Since the rotating support 4 is connected with the locking mechanism of the door hook 5, when the rotating support 4 is prevented from rotating, it can effectively lock the door hook 5, so that the door hook 5 is prevented from being separated from the main body structure 100. In this way, the stable locking of the door assembly 200 is realized.

[0045] The setting controls the rotation of the rotating bracket 4 through the telescopic rod 3 of the electromagnetic valve 2, realizes the automation and accurate control of the locking process, not only improves the reliability of the locking, but also makes the operation more simple and fast, and the locking mechanism of the rotating bracket 4 and the door hook 5 is closely matched, which ensures the stability of the door assembly 200 in the locking working condition.

[0046] As a preferred example of the present application, the rotating bracket 4 includes a rotating body 401 rotatably mounted on the rotating shaft 8 of the switch bracket 1 through a hinge hole 405, a first arm 402 and a second arm 403 are arranged on the rotating body 401, the first arm 402 can be stopped and positioned by the telescopic rod 3 in the locking working condition of the limiting and locking device 300, and the second arm 403 can abut against and limit the door hook 5 to prevent it from being pulled out in the locking working condition of the limiting and locking device 300. In the example of the present application, the rotating body 401 on the rotating bracket 4 is rotatably connected with the rotating shaft 8 of the switch bracket 1 through the hinge hole 405, which makes the rotating bracket 4 flexible to rotate on the switch bracket 1. The first arm 402 and the second arm 403 are arranged on the rotating body 401, and the two arms play a key role in the locking working condition of the limiting and locking device 300. Specifically, when the limiting and locking device 300 is in the locking state, the first arm 402 is stopped and positioned by the telescopic rod 3 extended out, so that the rotating movement of the rotating bracket 4 is limited, which ensures the stability of the rotating bracket 4 in the locking state; at the same time, the second arm 403 abuts against and limits the door hook 5 in the locking working condition, effectively preventing the door hook 5 from being accidentally pulled out, thereby ensuring the safety and reliability of the entire device.

[0047] The design simplifies the structure of the device through the interaction between the mechanical structures, reduces the number of parts, realizes the accurate control of the rotating bracket 4 and the door hook 5, and makes the device maintain stable performance in the locked and unlocked states.

[0048] As a preferred example of the present application, a first micro switch 6 is arranged on the switch bracket 1, and a third arm 404 is arranged on the rotating body 401. In the locking state of the limiting and locking device 300, the third arm 404 abuts against the first micro switch 6, and the first micro switch 6 is closed. In the example of the present application, the first micro switch 6 is installed on the switch bracket 1, and the third arm 404 is specially designed on the rotating body 401. When the limiting and locking device 300 is in the locking state, the third arm 404 abuts against the first micro switch 6, which directly triggers the closing mechanism of the first micro switch 6, thereby realizing the disconnection of the circuit or the transmission of a specific signal. When it is necessary to change the locking state of the door body, the third arm 404 is rotated along the rotating shaft 8 by the rotating body 401. When the third arm 404 rotates to a certain preset angle, it is separated from the first micro switch 6. At this time, the first micro switch 6 is automatically opened because it is no longer pressed by the third arm 404. This action not only restores the connection of the circuit or changes the signal state, but also allows the door assembly 200 to be opened without being limited by the limiting and locking device 300. In the above process, the interaction between the third arm 404 and the first micro switch 6 is the key to controlling the locking and unlocking states of the door assembly 200, and realizes the precise conversion between mechanical action and electrical signal.

[0049] The arrangement greatly improves the control accuracy and response speed of the limiting and locking device 300 by ingeniously introducing the design of the first micro switch 6 and the third arm 404 between the switch bracket 1 and the rotating body 401, so that the locking and unlocking process of the door assembly 200 is more reliable and easy to manage.

[0050] As a preferred example of the present application, the door hook 5 comprises a door hook body 501 connected with the door assembly 200 through a first connecting part 502, a door hook hooking part 503 is arranged at an end of the door hook body 501 away from the first connecting part 502, and a limiting protrusion 504 is arranged on the door hook hooking part 503. In the locking state of the limiting locking device 300, the limiting protrusion 504 is limited by the second arm 403, and the door hook hooking part 503 abuts against the switch bracket 1. In the example of the present application, the body of the door hook 5 is composed of the door hook body 501 which is stably connected with the door assembly 200 through the first connecting part 502, thereby ensuring the integrity and stability of the door hook and the door. The door hook hooking part 503 is arranged at the extending end of the door hook body 501, which is designed to realize the basic functions of the door hook, i.e. hooking and fixing. In addition, the limiting protrusion 504 is designed on the door hook hooking part 503. When the limiting locking device 300 works, the second arm 403 abuts against the limiting protrusion 504, thereby forming the first limiting and effectively limiting the further movement or rotation of the door hook 5. Meanwhile, the door hook hooking part 503 also abuts against the switch bracket 1, thereby greatly improving the locking reliability and stability of the door and effectively preventing the door assembly 200 from being accidentally opened under the action of external force in the closed state, thereby enhancing the safety performance of the door. The simple design is also convenient for installation and maintenance, thereby reducing the use cost.

[0051] As a preferred example of the present application, a second micro switch 7 is arranged on the switch bracket 1 and abuts against the door hook hooking part 503 in the closed state of the door assembly 200, and the second micro switch 7 is opened when the door hook hooking part 503 is separated from the switch bracket 1. In the example of the present application, the second micro switch 7 is ingeniously arranged on the switch bracket 1 and closely cooperates with the door hook hooking part 503, thereby realizing the accurate monitoring of the closed state of the door assembly 200. When the door assembly 200 is in the closed state, the door hook hooking part 503 abuts against the second micro switch 7 on the switch bracket 1, thereby making the second micro switch 7 in the closed state. The abutment not only ensures the stable connection between the door hook 5 and the switch bracket 1, but also transmits the signal that the door is closed to the related control system through the closed state of the second micro switch 7. When the door assembly 200 is opened and the door hook hooking part 503 is separated from the switch bracket 1, the second micro switch 7 is opened in time, thereby accurately reflecting the opening state of the door.

[0052] The arrangement realizes the real-time and accurate monitoring of the opening and closing states of the door assembly 200 by introducing the second micro switch 7, thereby not only improving the state recognition accuracy of the door assembly 200, but also providing a reliable input signal for the related control system, which is helpful to realize the more intelligent door control management.

[0053] The microwave oven door assembly opening and closing mechanism described in this application, based on the traditional door opening structure, uses a solenoid valve 2 to extend the telescopic rod 3 into the telescopic rod hole 9 of the switch bracket 1, locking the rotating bracket 4 so that it cannot rotate. The second arm 403 of the rotating bracket 4 limits and locks the limiting protrusion 504 on the door hook 5. The limiting surface of the limiting protrusion 504 is set in a straight plane. At the same time, the door hook 5 is limited and locked by the switch bracket 1, so the door handle on the door assembly 200 cannot be pulled outward. The microwave oven door assembly opening and closing mechanism described in this application, by installing the solenoid valve 2 on the switch bracket 1 and using the solenoid valve 2 to control the extension and retraction of the telescopic rod 3, realizes the locking and unlocking of the rotating bracket 4. In the locked state, the telescopic rod 3 extends along the telescopic rod hole 9 of the switch bracket 1, preventing the rotating bracket 4 from rotating around the rotation center. At the same time, the second arm 403 of the rotating bracket 4 abuts against the limiting protrusion 504 on the door hook 5, and the door hook 5 is also limited and locked by the switch bracket 1, ensuring that the door assembly 200 remains tightly closed during microwave oven operation. When the user needs to open the microwave oven door assembly 200, the solenoid valve 2 needs to be controlled first. The solenoid valve 2 causes the telescopic rod 3 to change from its longest to its shortest position, and the telescopic rod 3 retracts into the telescopic rod hole 9, releasing the obstruction to the rotation of the first arm 402 on the rotating bracket 4 around the rotation center. Then, the door assembly 200 is pulled down, and the door hook 5 is guided to release the limiting position of the second arm 403 on the rotating bracket 4, and at the same time, the limiting position of the switch bracket 1 is released, opening the door assembly 200. The two-step operation is required to open the door, which can effectively prevent children from accidentally opening the door.

[0054] This application also discloses a cooking apparatus, wherein a microwave oven door assembly opening and closing mechanism as described in the above embodiments is provided on the cooking apparatus.

[0055] The cooking device of this application achieves double locking of the door assembly 200 through the ingenious combination of the solenoid valve 2 and the rotating bracket 4. The design structure is simple, easy to install and maintain, and reduces the cost of use. It not only ensures the convenience of adult use, but also effectively prevents children from operating it by mistake, achieving a perfect combination of safety and convenience, and providing users with a safer and more reliable microwave oven experience.

[0056] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A microwave oven door assembly opening and closing mechanism, characterized by comprising: The utility model relates to a door lock, comprising: a main body structure (100); a door assembly (200) arranged at the front end of the main body structure (100) and capable of being hingedly rotated relative to the main body structure (100), the door assembly (200) being locked with the main body structure (100) by a door hook (5) in a closed state; a limiting and locking device (300) comprising a locking state and an opening state, the door assembly (200) being capable of being opened relative to the main body structure (100) under the action of an external force in the opening state of the limiting and locking device (300), the door hook (5) being locked by the limiting and locking device (300) in the locking state of the limiting and locking device (300), and the door assembly (200) and the main body structure (100) being kept in a relative locking state.

2. The microwave oven door assembly opening and closing mechanism according to claim 1, wherein The door hook (5) is arranged on the door assembly (200), the limiting and locking device (300) is arranged on the main body structure (100), the door hook (5) is capable of being locked on the main body structure (100) when the door assembly (200) is integrally rotated to the closed state, and the limiting and locking device (300) is capable of limiting the door hook (5) from being separated from the main body structure (100) in the locking state.

3. The microwave oven door assembly opening and closing mechanism according to claim 2, wherein The limiting and locking device (300) comprises a switch bracket (1), an electromagnetic valve (2) and a rotating support (4) are arranged on the switch bracket (1), the telescopic rod (3) of the electromagnetic valve (2) is extended and prevents the rotating support (4) from rotating in the locking state of the limiting and locking device (300), and the rotating support (4) is capable of locking the door hook (5) from being separated from the main body structure (100).

4. The microwave oven door assembly opening and closing mechanism according to claim 3, wherein A telescopic rod hole (9) is arranged on the switch bracket (1), the telescopic rod (3) is capable of extending or retracting the telescopic rod hole (9) and is used for locking or unlocking the rotating support (4).

5. The microwave oven door assembly opening and closing mechanism according to claim 3 or 4, wherein The rotating support (4) comprises a rotating body (401), the rotating body (401) is rotatably installed on the rotating shaft (8) of the switch bracket (1) through a hinged hole (405), a first arm (402) and a second arm (403) are arranged on the rotating body (401), the first arm (402) is capable of being stopped and positioned by the telescopic rod (3) in the locking state of the limiting and locking device (300), and the second arm (403) is capable of abutting against and limiting the door hook (5) to prevent the door hook (5) from being pulled out in the locking state of the limiting and locking device (300).

6. The microwave oven door assembly opening and closing mechanism according to claim 5, wherein A first microswitch (6) is arranged on the switch bracket (1), a third arm (404) is arranged on the rotating body (401), and the third arm (404) abuts against the first microswitch (6) in the locking state of the limiting and locking device (300), and the first microswitch (6) is closed.

7. The microwave oven door assembly opening and closing mechanism according to claim 5, wherein The door hook (5) comprises a door hook body (501) connected with the door assembly (200) through a first connecting part (502), a door hook hook part (503) is arranged at one end of the door hook body (501) away from the first connecting part (502), a limiting convex point (504) is arranged on the door hook hook part (503), under the locking condition of the limiting and locking device (300), the limiting convex point (504) is limited by the second arm (403), and the door hook hook part (503) is in abutment with the switch bracket (1).

8. The microwave oven door assembly opening and closing mechanism according to claim 5, wherein In the process of downward rotation and opening of the door assembly (200), the door hook (5) rotates integrally with the door assembly (200) and can guide the limiting of the second arm (403) on the release rotary support (4) and the limiting of the switch bracket (1).

9. The microwave oven door assembly opening and closing mechanism according to claim 8, wherein A second micro switch (7) is arranged on the switch bracket (1), the second micro switch (7) is in abutment with the door hook hook part (503) under the closed state of the door assembly (200), and the second micro switch (7) is opened when the door hook hook part (503) is separated from the switch bracket (1).

10. A cooking apparatus characterized by, The microwave oven door assembly opening and closing mechanism as claimed in any one of claims 1 to 9 is arranged on the cooking device.

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