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 hinge device and a locking safety device, and the hinge device is used for rotating closing or rotating opening of a door assembly relative to a main body structure; the locking safety device comprises a locking working condition and an opening working condition, and under the locking working condition of the locking safety device, 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 hinge device and the locking safety device are arranged, so that the door assembly can be easily rotated to be opened or closed under the action of external force, meanwhile, the door assembly can be kept in a relative locking state with the main body structure when being closed, and stable opening and closing and reliable locking of the microwave oven door assembly are realized; the door is effectively prevented from being accidentally opened when the microwave oven runs, and the safety is improved.

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 facilitates 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 due to the simple design of the door body opening and closing mechanism, they can easily open the microwave oven door. During the cooking process, the microwave oven generates high temperature inside, and once the children open the microwave oven door, they 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-proof covers or sliders, such designs are often easily bypassed or damaged by children, and cannot provide long-term effective safety protection. The technical personnel in the field have 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 safety and convenience problems of the microwave oven door assembly opening and closing mechanism.

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

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

[0010] A hinge device for rotating closing or opening of a door assembly relative to a main body structure;

[0011] A locking safety device including a locking mode and an opening mode, in the opening mode, the door assembly can be rotated open relative to the main body structure by the hinge device under external force; in the locking mode, the door assembly and the main body structure are kept in a relative locking state.

[0012] Further, the locking safety device includes an electromagnetic telescopic device, which can drive the telescopic rod to be inserted into or separated from the lock hole, so as to realize the switching between the locking mode and the opening mode of the locking safety device.

[0013] Further, the electromagnetic telescopic device is arranged on a connecting rod of the hinge device, or the electromagnetic telescopic device is arranged on the main body structure, or the electromagnetic telescopic device is arranged on the door assembly.

[0014] Further, the hinge device includes a connecting rod and a hinge, one end of the connecting rod is directly or indirectly fixedly connected with the main body structure, the other end is hingedly connected with the door assembly through a hinge shaft and a first adapter hole, the connecting rod is used for turning over the door assembly relative to the hinge shaft; one end of the hinge is directly or indirectly connected with the main body structure through a tension spring, the other end is connected with the door assembly, the hinge is used for being pulled by the door assembly when the door assembly is closed and being tightly attached to a front plate of the main body structure.

[0015] Further, the electromagnetic telescopic device includes an electromagnetic valve, the electromagnetic valve is arranged on the door assembly, the lock hole is arranged on the main body structure or the hinge device, the telescopic rod is driven by the electromagnetic valve to be inserted into or separated from the lock hole, and the lock hole is arranged on the connecting rod on the front side of the front plate.

[0016] Further, a limiting groove is arranged on the telescopic rod, the limiting groove is extended out of the lock hole in the locking mode.

[0017] Further, the hinge device further includes a roller, when the door assembly is rotated open or closed relative to the front plate, the hinge is driven to slide forward or backward along a through groove above the roller.

[0018] Further, the hinge device further includes a hinge support, the hinge support is fixed on the main body structure, the tension spring and the connecting rod are connected with the hinge support, and the roller is arranged on the hinge support and supports the hinge to slide relative to the hinge support.

[0019] Furthermore, two hinge devices are designed, and the two hinge devices are symmetrically arranged on opposite sides of the opening of the main structure. One locking safety device or two symmetrically arranged devices are provided.

[0020] Compared with the prior art, the microwave oven door assembly opening and closing mechanism of this utility model has the following advantages:

[0021] (1) The microwave oven door assembly opening and closing mechanism described in this utility model achieves stable opening and closing and reliable locking of the microwave oven door assembly by setting a hinge device and a locking safety device. The dual working condition design of the locking safety device effectively prevents the microwave oven door from opening accidentally during operation, avoids safety hazards such as microwave leakage, protects the health and safety of users, and greatly improves the safety of the microwave oven door while maintaining the convenience of operation.

[0022] (2) The microwave oven door assembly opening and closing mechanism of the present invention uses an electromagnetic telescopic device to drive the telescopic rod to engage or disengage with the lock hole, thereby realizing the rapid switching between locking and opening conditions. This makes the operation convenient and improves the accuracy and reliability of locking, making the locking and opening of the door assembly more stable and controllable.

[0023] Another objective of this invention is to provide a cooking device, wherein a microwave oven door assembly opening and closing mechanism as described above is provided on the cooking device.

[0024] The cooking device has the same advantages over the prior art as the microwave oven door assembly opening and closing mechanism described above, and will not be repeated here. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figure 1 This is a schematic diagram of the microwave oven door assembly opening and closing mechanism in the closed state according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the opening and closing mechanism of the microwave oven door assembly in the open state according to an embodiment of the present invention;

[0028] Figure 3 for Figure 2 Enlarged cross-sectional view of section A in the middle;

[0029] Figure 4 This is an exploded view of the assembly of the door component and the front panel according to an embodiment of the present invention.

[0030] Reference Signs List:

[0031] 100 - main body structure; 200 - door assembly; 300 - hinge device; 400 - locking safety device; 1 - hinge support; 2 - tension spring; 3 - hinge; 4 - roller; 5 - connecting rod; 6 - electromagnetic telescopic device; 601 - electromagnetic valve; 602 - telescopic rod; 603 - limiting groove; 7 - locking hole; 8 - front plate; 9 - hinge shaft; 10 - through slot; 11 - pivot support; 12 - pull rivet; 13 - first adapter hole. DETAILED DESCRIPTION

[0032] In order to make the technical means and purposes of the utility model easy to understand, the embodiments of the utility model are described in detail below in combination with specific drawings.

[0033] It should be noted that all the terms for indicating directionality and positionality in the utility model, such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "low", "transverse", "longitudinal", "center", etc., are only used to explain the relative positional relationship, connection condition, etc. between components in a certain specific state (as shown in the drawings) and are only for the convenience of describing the utility model, and thus cannot be understood as a limitation on the utility model. In addition, the description of "first", "second", etc. in the utility model is only for the purpose of description and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features.

[0034] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "mount", "connect", "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; it can be the communication inside 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.

[0035] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to 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.

[0036] AsFigures 1 to 4 The microwave oven door assembly opening and closing mechanism disclosed in the present application comprises:

[0037] a hinge device 300 for rotating the door assembly 200 to close or open relative to the main body structure 100;

[0038] a locking safety device 400 comprising a locking working condition and an opening working condition, wherein in the opening working condition, the door assembly 200 is rotated to open relative to the main body structure 100 by the hinge device 300 under the action of external force; and in the locking working condition, the door assembly 200 and the main body structure 100 are kept in a relative locking state.

[0039] The microwave oven door assembly opening and closing mechanism disclosed in the present application introduces the locking safety device 400 to the original microwave oven door assembly opening and closing mechanism with the hinge device 300, which firmly locks the door assembly 200 and the main body structure 100 in the locking state according to the switching of working conditions, prevents the door from being accidentally opened when the microwave oven is working, releases the door assembly 200 in the opening working condition, and allows it to freely rotate under the action of external force through the hinge device 300, so as to prevent children or people who do not know how to use the equipment from operating and causing scalding, thereby increasing the safety of the operator.

[0040] The microwave oven door assembly opening and closing mechanism disclosed in the present application perfectly combines the locking safety device 400 and the hinge device 300, effectively prevents the door from being accidentally opened during the working process of the microwave oven by using the double working condition design of the locking safety device 400, avoids the safety hazards such as microwave leakage, guarantees the health and safety of the user, and greatly improves the safety of the microwave oven door while maintaining the convenience of operation.

[0041] As a preferred example of the present application, the locking safety device 400 includes an electromagnetic telescopic device 6 capable of driving the telescopic rod 602 to be inserted into or separated from the lock hole 7, thereby realizing the switching of the locking state or the opening state of the locking safety device 400. The locking safety device 400 of the present application realizes the switching of the working condition through the electromagnetic telescopic device 6. When the electromagnetic telescopic device 6 is powered on, an electromagnetic force is generated to drive the telescopic rod 602 to perform telescopic movement. In the locking state, the electromagnetic telescopic device 6 extends the telescopic rod 602 to be inserted into the lock hole 7, thereby firmly locking the door assembly 200 on the main body structure 100; while in the opening state, the electromagnetic telescopic device 6 drives the telescopic rod 602 to retract, so that it is separated from the lock hole 7, at this time the door assembly 200 can be easily opened under the action of external force through the hinge device 300. The insertion and separation between the telescopic rod and the lock hole are controlled by the electromagnetic telescopic device, which ensures that the locking safety device 400 can quickly and accurately switch between the locking and opening states, meeting the needs of users for safety and convenience.

[0042] The locking safety device 400 with the electromagnetic telescopic device 6 has very fast response speed and strong driving force, and can complete the switching of the working condition in a very short time, and ensure the stable insertion between the telescopic rod 602 and the lock hole 7 in the locking state, effectively preventing the risk of accidental opening of the door assembly 200 during the operation of the microwave oven, not only improving the use efficiency of the microwave oven, but also providing users with more convenient operation experience. In addition, the electromagnetic telescopic device 6 has simple structure, small size and low power consumption, making the manufacturing and installation of the locking safety device more easy, reducing the production cost and improving the market competitiveness of the product.

[0043] As a preferred example of the present application, the electromagnetic telescopic device 6 is arranged on the connecting rod 5 of the hinge device 300, or the electromagnetic telescopic device 6 is arranged on the main body structure 100, or the electromagnetic telescopic device 6 is arranged on the door assembly 200.

[0044] As a preferred example of the present application, the electromagnetic telescopic device 6 comprises an electromagnetic valve 601, which is installed on the door assembly 200, the lock hole 7 is arranged on the main body structure 100 or the hinge device 300, and the telescopic rod 602 is inserted into or slides out of the lock hole 7 under the driving action of the electromagnetic valve 601. In the example of the present application, the electromagnetic valve 601 is ingeniously installed on the door assembly 200, and the lock hole 7 is arranged on the main body structure 100 or the hinge device 300 connecting the door assembly and the main body structure, thereby providing a precise insertion target for the telescopic rod 602. When the electromagnetic valve 601 receives a control signal, the electromagnetic valve 601 generates an electromagnetic force to drive the telescopic rod 602 to move linearly. This arrangement further optimizes the arrangement structure of the electromagnetic telescopic device 6, simplifies the installation structure, reduces the complex connection between components, and makes the entire locking safety device more compact and easy to maintain.

[0045] As a preferred example of the present application, the hinge device 300 comprises a connecting rod 5 and a hinge 3. One end of the connecting rod 5 is directly or indirectly fixedly connected with the main body structure 100, and the other end is hingedly connected with the door assembly 200 through a hinge shaft 9 and a first adapter hole 13, and the connecting rod 5 is used for linear flipping of the door assembly 200 relative to the hinge shaft 9. One end of the hinge 3 is directly or indirectly connected with the main body structure 100 through a tension spring 2, and the other end is connected with the door assembly 200, and the hinge 3 is used for the door assembly 200 to be pulled and tightly attached to the front plate 8 of the main body structure 100 when the door assembly 200 is closed. The hinge device 300 described in the present application realizes the opening and closing of the door assembly 200 through the cooperative action of the connecting rod 5 and the hinge 3. One end of the connecting rod 5 is fixed on the main body structure 100, and the other end is hingedly connected with the hinge shaft 9 on the door assembly 200 through the first adapter hole 13, so that the door assembly 200 performs linear flipping movement around the hinge shaft 9 to complete the opening and closing action. At the same time, one end of the hinge 3 is connected with the main body structure 100 through the tension spring 2, and the other end is connected with the door assembly 200. When the door assembly 200 is closed, the tension of the tension spring 2 acts on the hinge 3, so that the door assembly 200 can tightly attach to the front plate 8 of the main body structure during the closing process. This not only ensures the sealing of the door, but also enhances the stability, thereby realizing smooth closing and opening of the door assembly. As a preferred example of the present application, a pivot shaft support 11 is arranged on the door assembly 200 for supporting and fixing the hinge shaft 9, and the pivot shaft support 11 is arranged below the electromagnetic valve 601.

[0046] As a preferred example of the present application, the lock hole 7 is arranged on the connecting rod 5 on the front side of the front plate 8. In the example of the present application, the lock hole 7 is ingeniously arranged on the connecting rod 5 on the front side of the front plate 8, that is, the side of the main body structure 100 close to the door assembly 200. The lock hole 7 and the first adapter hole 13 of the hinge shaft 9 are both arranged on the connecting rod 5 on the front side of the front plate 8, so that the position of the lock hole 7 is closely connected with the opening and closing action of the door assembly 200. When it is necessary to lock the door assembly 200, the user can insert the telescopic rod 602 of the electromagnetic telescopic device 6 into the lock hole 7 to perform the locking working condition of the door assembly 200 relative to the main body structure 100, and when it is necessary to perform the opening working condition of the door assembly 200 relative to the main body structure 100, the telescopic rod 602 of the electromagnetic telescopic device 6 is separated from the lock hole 7, and then the door assembly 200 is turned and flipped open to the front side.

[0047] This design improves the convenience of use of the locking safety device 400, and the user does not need to find a lock hole at other positions of the main body structure 100. The combination of the lock hole 7 and the connecting rod 5 reduces the need for additional components, reduces the installation difficulty and cost, enhances the structural strength of the locking connection of the locking safety device 400, not only simplifies the switching operation process of the working condition, but also ensures that the position of the lock hole 7 is coordinated with the movement of the door assembly, making the entire locking and opening process smoother and more efficient.

[0048] As a preferred example of the present application, a limiting groove 603 is arranged on the telescopic rod 602, which protrudes out of the lock hole 7 in the locking working condition. In the example of the present application, the limiting groove 603 is ingeniously integrated into the design of the telescopic rod 602. When the telescopic rod 602 is in the locking working condition, that is, the length of the telescopic rod 602 needs to be fixed to keep the door assembly 200 in the locked state relative to the main body structure 100, the limiting groove 603 can be aligned and partially protrude out of the lock hole 7. This setting improves the stability and safety of the telescopic rod 602 in the locked state while maintaining the flexibility of the telescopic rod 602, making the locking and unlocking process of the telescopic rod 602 more intuitive and convenient, and improving the use efficiency.

[0049] As a preferred example of the present application, the hinge device 300 further comprises a roller 4, and the door assembly 200 drives the hinge 3 to slide forward or backward along the through slot 10 above the roller 4 when the door assembly 200 is rotated to open or close relative to the front plate 8. In the example of the present application, the roller 4 is ingeniously integrated into the hinge device 300, and the interaction of the door assembly 200 and the front plate 8 constitutes a smooth motion mechanism. When the door assembly 200 is rotated to open or close relative to the front plate 8, the rotation is effectively transmitted to the sliding motion above the roller 4 through the hinge 3. Specifically, the hinge 3 slides forward or backward along the through slot 10 under the support of the roller 4. The design of the roller 4 not only provides necessary sliding support and reduces frictional resistance, making the door assembly 200 require less force to open or close and making the operation more convenient and smooth, but also ensures the stability and accuracy of the sliding process.

[0050] As a preferred example of the present application, the hinge 3 is connected to the door assembly 200 by a pull rivet 12 away from one end of the tension spring 2. In the example of the present application, the pull rivet 12 is used as a connecting piece to achieve stable connection of the hinge 3 and the door assembly 200, which not only provides sufficient mechanical strength to withstand various forces during the movement of the door assembly 200, but also ensures the stability and durability of the connection, so that the door body is not prone to looseness or falling during long-term use. When the door assembly 200 is subjected to external force, this connection mode can ensure effective transmission of force, so that the hinge 3 can smoothly respond to the action of the door assembly 200 to achieve stable opening and closing of the door body.

[0051] As a preferred example of the present application, the hinge device 300 further comprises a hinge support 1, which is fixed on the main structure 100, and the tension spring 2 and the connecting rod 5 are connected to the hinge support 1, and the roller 4 is installed on the hinge support 1 and supports the sliding of the hinge 3 relative thereto. In the example of the present application, one end of the tension spring 2 is connected to the hook at the rear end of the hinge support 1, and the other end is connected to the groove at the rear end of the hinge 3. This design uses the fixed design of the hinge support 1 to enhance the stability of the structure and optimize the cooperation of various components, so that the door assembly 200 is not prone to looseness or deviation during use, ensuring normal opening and closing of the door and prolonging the service life of the hinge device 300.

[0052] As a preferred example of the present application, two sets of the hinge device 300 are designed, and the two sets of the hinge device 300 are symmetrically arranged on opposite sides of the opening of the main body structure 100, and one or two sets of the locking safety device 400 are arranged. In the example of the present application, one set of the hinge device 300 is designed on each of the left and right sides of the opening of the main body structure 100, and one set of the locking safety device 400 is arranged at the hinge device 300 on one side. Each set of the hinge device 300 is responsible for connecting the door assembly 200, so that the door assembly 200 can be rotatably opened or closed relative to the main body structure 100. When the door needs to be opened, the hinge device 300 provides smooth rotation support; when the door is closed, the locking safety device 400 takes over, so that it can be firmly locked when the door assembly 200 is closed, ensuring the stability and safety of the door body. The symmetric arrangement of the hinge devices 300 on the left and right sides not only ensures the balance of the force, but also makes the opening and closing operation of the door assembly 200 more stable and reliable.

[0053] The design improves the overall stability of the door assembly, effectively prevents the door body from being skewed or damaged due to uneven force on one side, and realizes stable connection and efficient locking of the door assembly 200.

[0054] The microwave oven door assembly opening and closing mechanism disclosed in the present application ingeniously combines the hinge device and the locking safety device, uses the electromagnetic telescopic device as the core component of the locking safety device, and controls the driving of the telescopic rod and the lock hole arranged on the connecting rod through the energization of the electromagnetic valve. The telescopic rod and the lock hole are inserted or separated, so that the door assembly can be quickly and accurately switched between the locked state and the opened state. In the locked state, the telescopic rod is firmly inserted into the lock hole, tightly locking the door assembly and the main body structure, effectively preventing the door from being accidentally opened due to external force or misoperation during the operation of the microwave oven, avoiding safety hazards such as microwave leakage, and ensuring the health and safety of the user. At the same time, the design of the locking mechanism fully considers the convenience of use. When the door assembly needs to be opened, the telescopic rod can be easily unlocked by retracting the telescopic rod through the control of the electromagnetic valve, and then the door assembly can be opened through the smooth rotation of the hinge device.

[0055] The present application also discloses a cooking device, wherein the microwave oven door assembly opening and closing mechanism as described in the above embodiments is arranged on the cooking device.

[0056] The cooking device of the present application realizes a microwave oven door assembly opening and closing mechanism with simple and reasonable structure, low cost and high safety performance through flexible control of the electromagnetic telescopic device, smooth rotation of the hinge device and ingenious cooperation of various components, effectively prevents children from opening the door by mistake, ensures the safety of the operator, improves the use efficiency and user experience of the microwave oven, and provides a new solution for improving the safety performance of the cooking equipment.

[0057] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A microwave oven door assembly opening and closing mechanism, characterized by comprising: The application relates to a door assembly (200) and a locking safety device (400) for the door assembly (200). The door assembly (200) can be opened by the hinge device (300) relative to the main body structure (100) under external force in the opening state of the locking safety device (400); and the door assembly (200) and the main body structure (100) are kept in a relative locking state in the locking state of the locking safety device (400). The locking safety device (400) comprises an electromagnetic telescopic device (6) which can drive a telescopic rod (602) to be inserted into or separated from a lock hole (7), so as to realize switching between the locking state and the opening state of the locking safety device (400).

2. The microwave oven door assembly opening and closing mechanism according to claim 1, wherein The electromagnetic telescopic device (6) is arranged on a connecting rod (5) of the hinge device (300), or the electromagnetic telescopic device (6) is arranged on the main body structure (100), or the electromagnetic telescopic device (6) is arranged on the door assembly (200).

3. The microwave oven door assembly opening and closing mechanism according to claim 2, wherein The hinge device (300) comprises the connecting rod (5) and a hinge (3), one end of the connecting rod (5) is directly or indirectly fixedly connected with the main body structure (100), the other end is hingedly connected with the door assembly (200) through a hinge shaft (9) and a first adapter hole (13), and the connecting rod (5) is used for linearly overturning the door assembly (200) relative to the hinge shaft (9); one end of the hinge (3) is directly or indirectly connected with the main body structure (100) through a tension spring (2), the other end is connected with the door assembly (200), and the hinge (3) is used for being subjected to a pulling force and tightly abutting on a front plate (8) of the main body structure (100) when the door assembly (200) is closed.

4. The microwave oven door assembly opening and closing mechanism according to claim 2 or 3, wherein The electromagnetic telescopic device (6) comprises an electromagnetic valve (601) which is arranged on the door assembly (200), the lock hole (7) is arranged on the main body structure (100) or the hinge device (300), the telescopic rod (602) is driven by the electromagnetic valve (601) to be inserted into or slid out of the lock hole (7), and the lock hole (7) is arranged on the connecting rod (5) on the front side of the front plate (8).

5. The microwave oven door assembly opening and closing mechanism according to claim 4, wherein A limiting groove (603) is arranged on the telescopic rod (602) and extends out of the lock hole (7) in the locking state.

6. The microwave oven door assembly opening and closing mechanism according to claim 5, wherein The hinge device (300) further comprises a roller (4), the door assembly (200) drives the hinge (3) to slide forward or backward on the roller (4) along a through groove (10) when the door assembly (200) is opened or closed relative to the front plate (8).

7. The microwave oven door assembly opening and closing mechanism according to claim 5, wherein The hinge device (300) further comprises a hinge support (1) which is fixed on the main body structure (100), the tension spring (2) and the connecting rod (5) are connected with the hinge support (1), and the roller (4) is arranged on the hinge support (1) and supports the hinge (3) to slide relative to the hinge support (1).

8. The microwave oven door assembly opening and closing mechanism according to claim 7, wherein ​ 9. The microwave oven door assembly opening and closing mechanism according to claim 1, wherein The hinge device (300) is designed two, two of the hinge device (300) is symmetrically arranged on the opposite sides of the opening of the main body structure (100), and the locking safety device (400) is arranged one or symmetrically arranged two.

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

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