Small-size electric door opening device and microwave oven

Abstract

The utility model provides a small-size electric door opening device and a microwave oven. The small-size electric door opening device comprises a door hook assembly, an electric ejection assembly, a switch bracket assembly and a switch assembly, the electric ejection assembly and the switch assembly are arranged on the switch bracket assembly, and one side, far away from the electric ejection assembly, of the switch bracket assembly is connected with a main body of the microwave oven; one end of the door hook assembly is connected with a door body of the microwave oven, the other end of the door hook assembly can abut against or be separated from the switch bracket assembly in an up-down sliding mode, the door hook assembly abuts against the electric ejection assembly, the number of the switch assemblies is at least one, and the switch assemblies abut against or are separated from the door hook assembly and the electric ejection assembly; the door hook assembly and the switch bracket assembly are arranged in parallel. According to the small-size electric door opening device and the microwave oven, the structure of the electric door opening device can be simplified, the cost of the door opening device is reduced, the space occupied by the device is reduced, and the disassembly and assembly flexibility of the door opening device is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of microwave ovens, and more specifically, to a small-volume electric door opening device and a microwave oven. Background Technology

[0002] Traditional cooking appliances, such as microwave ovens and ovens, primarily use pull-type or button-type door opening mechanisms. Users typically open the door by pulling the handle or pressing the button. However, with continuous technological advancements and rising living standards, integrated built-in microwave ovens offer a more aesthetically pleasing design compared to pull-type or button-type opening mechanisms. Therefore, the application of electric door opening mechanisms, which offer safety, aesthetics, convenience, and ease of use, is becoming increasingly common. While electric door opening can significantly improve our quality of life, it also presents several challenges. Firstly, electric door opening mechanisms are relatively complex and have lower safety standards. Secondly, traditional door opening systems typically use a motor to drive a rotating arm, increasing the cost of the opening structure. Furthermore, the presence of a motor results in a larger space requirement for the entire opening mechanism. Therefore, researching ways to simplify the electric door opening structure, reduce its space requirements, and lower its cost is of great significance.

[0003] Patent CN118623351A discloses an electrically operated microwave oven, comprising a door body, a door hook bracket slidably connected to the door body; a cabinet, with a first door hook and a second door hook capable of engaging with the cabinet, the cabinet and door connected by a door opener; an interlocking bracket fixedly connected to the cabinet; a pushing member connected to the interlocking bracket, the pushing member having a slot, the pushing member capable of moving the second door hook to disengage from the cabinet; a driving member connected to the interlocking bracket, the driving member including a locking block capable of engaging or disengaging with the slot; and a reset member fixedly connected to the interlocking bracket and the pushing member, the reset member capable of moving the pushing member when the driving member is damaged and immobile. This electrically operated door structure can improve the safety of the microwave oven's electrically operated door, but due to its complexity, it tends to result in higher costs. Utility Model Content

[0004] In view of this, the present invention aims to propose a small-volume electric door opening device and a microwave oven to solve the problems of existing electric door opening devices being relatively complex, costly, space-consuming, and having low safety. This simplifies the structure of the electric door opening device, reduces the overall space occupied by the door opening device, lowers the cost of the door opening device, improves the safety of the door opening device, and enhances the flexibility of the door opening device's assembly and disassembly. It can realize the door component opening system function and ensure that it can be completely integrated into the installation space of the microwave oven where the door opening device is to be installed.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] This utility model relates to a small-volume electric door opening device and a microwave oven. The small-volume electric door opening device includes a door hook assembly, an electric ejection assembly, a switch bracket assembly, and a switch assembly. The electric ejection assembly and the switch assembly are both mounted on the switch bracket assembly. The side of the switch bracket assembly away from the electric ejection assembly is connected to the main body of the microwave oven. There is a certain gap between the bottom of the switch bracket assembly and the bottom of the microwave oven main body. One end of the door hook assembly is connected to the door of the microwave oven, and the other end of the door hook assembly can slide up and down to abut or separate from the switch bracket assembly. The door hook assembly abuts against the electric ejection assembly. At least one switch assembly is provided, and the switch assembly abuts against or separates from both the door hook assembly and the electric ejection assembly. The door hook assembly and the switch bracket assembly are arranged parallel to each other.

[0007] Furthermore, the electric ejection assembly includes a solenoid valve and a rotary arm; the top of the solenoid valve is connected to the bottom of the rotary arm, and the door hook assembly abuts against the top of the rotary arm; both the solenoid valve and the rotary arm are movably positioned on the side of the switch bracket assembly away from the microwave oven body.

[0008] Furthermore, the solenoid valve includes a valve body and a valve core. The valve body is connected to the rotary arm through the valve core. The valve body is mounted on the switch bracket assembly. One end of the valve core is mounted inside the valve body in a way that allows it to move up and down, and the other end of the valve core abuts against the rotary arm.

[0009] Furthermore, the top of the valve core is an arc surface.

[0010] Furthermore, the rotary arm includes a first rotary arm, a second rotary arm, a third rotary arm, and a fourth rotary arm; the first rotary arm, the second rotary arm, and the third rotary arm are connected in sequence, the top of the first rotary arm abuts against the door hook assembly; the bottom of the second rotary arm abuts against the valve core of the solenoid valve, the bottom of the fourth rotary arm is located at the top of the end of the third rotary arm away from the second rotary arm, and the top of the fourth rotary arm is connected to the switch bracket assembly in a manner that allows it to rotate left and right.

[0011] Furthermore, the bottom of the second part of the rotating arm includes a first plate, a second plate, and a third plate, which are connected in sequence. The end of the first plate away from the second plate is connected to the first part of the rotating arm, and the end of the third plate away from the second plate is connected to the third part of the rotating arm. The bottom of the second plate is connected to the outer wall of the valve core.

[0012] Furthermore, the second plate is an arc-shaped plate.

[0013] Furthermore, the switch bracket assembly includes a limiting bracket, a bracket body, and a limiting hook; the limiting bracket, bracket body, and limiting hook are connected in sequence, and the limiting bracket and limiting hook are both vertically arranged on the side of the bracket body away from the microwave oven body; the door hook assembly is movable and can abut or separate from the limiting bracket, and the rotating arm is movable and connected to the limiting hook.

[0014] Furthermore, the limiting bracket includes a limiting through hole; the door hook assembly includes a first door hook, a second door hook, and a connector; the first door hook, the second door hook, and the connector are all connected to the door body, one end of the first door hook is connected to one end of the second door hook through the connector, and the other ends of the first door hook and the second door hook are connected or separated from their corresponding limiting through holes in a movable manner.

[0015] A microwave oven includes the aforementioned small-volume electric door opening device, which is disposed inside the microwave oven.

[0016] Compared with the prior art, the small-volume electric door opening device and microwave oven described in this utility model have the following advantages:

[0017] By setting up the door opening device, the structure of the electric door opening device can be simplified, the overall space occupied by the door opening device can be reduced, the cost of the door opening device can be reduced, the safety of the door opening device can be improved, and the flexibility of disassembly and assembly of the door opening device can be enhanced. It can realize the door component opening system function, and can also ensure that it is completely embedded into the installation space of the microwave oven where the door opening device needs to be installed. Attached Figure Description

[0018] The accompanying drawings, which constitute a part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments and descriptions of the utility model are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0019] Figure 1 A schematic diagram of the overall structure of the switching device installed inside the microwave oven;

[0020] Figure 2 A first-view structural diagram of the switching device in the open door state;

[0021] Figure 3 A second-view structural diagram of the switching device in the open door state;

[0022] Figure 4 A first-person view structural diagram of the switching device in the closed state;

[0023] Figure 5 A second-view structural diagram of the switching device in the closed state;

[0024] Figure 6This is a schematic diagram of the overall structure of the slewing arm.

[0025] Explanation of reference numerals in the attached drawings: 1. Door hook assembly; 11. First door hook; 12. Second door hook; 13. Connector; 2. Electric ejection assembly; 21. Solenoid valve; 211. Valve body; 212. Valve core; 22. Rotary arm; 221. Rotary arm part one; 222. Rotary arm part two; 2221. First plate; 2222. Second plate; 2223. Third plate; 223. Rotary arm part three; 2231. First side plate; 2232. Connecting plate; 2233. Second side plate; 2234. Third side plate; 224. Rotary arm part four; 3. Switch bracket assembly; 31. Limit bracket; 311. Limit through hole; 32. Bracket body; 33. Limit hook; 4. Switch assembly; 41. First micro switch; 42. Second micro switch; 43. Third micro switch. Detailed Implementation

[0026] The inventive concepts of this disclosure will be described below using terminology commonly used by those skilled in the art to convey the essence of their work to others skilled in the art. However, these inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments described herein.

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] This embodiment is for a microwave oven. Similar to a conventional microwave oven, the overall structure consists of a door, an outer shell, and a cavity.

[0031] To address the problems of complexity, high cost, large space occupation, and low safety in existing electric door opening devices, this embodiment proposes a small-volume electric door opening device and a microwave oven. The small-volume electric door opening device includes a door hook assembly 1, an electric ejection assembly 2, a switch bracket assembly 3, and a switch assembly 4. The electric ejection assembly 2 and the switch assembly 4 are both mounted on the switch bracket assembly 3. The side of the switch bracket assembly 3 away from the electric ejection assembly 2 is connected to the main body of the microwave oven. There is a certain gap between the bottom of the switch bracket assembly 3 and the bottom of the microwave oven main body. One end of the door hook assembly 1 is connected to the microwave oven door, and the other end of the door hook assembly 1 can slide up and down, abutting or separating from the switch bracket assembly 3. The door hook assembly 1 abuts against the electric ejection assembly 2, allowing the door hook assembly 1 to slide up and down along the switch bracket assembly 3 under the action of the electric ejection assembly 2, thus achieving electric door opening. At least one switch assembly 4 is provided, abutting or separating from both the door hook assembly 1 and the electric ejection assembly 2. The door hook assembly 1 and the switch bracket assembly 3 are arranged parallel to each other.

[0032] By coordinating the switch assembly 4, door hook assembly 1, electric ejection assembly 2, and switch bracket assembly 3, the structure of the electric door opening device can be simplified, the overall space occupied by the door opening device can be reduced, the cost of the door opening device can be reduced, the safety of the door opening device can be improved, and the flexibility of disassembly and assembly of the door opening device can be enhanced. It can realize the door opening system function of the door assembly, and ensure that it can be completely embedded into the installation space of the microwave oven where the door opening device needs to be installed.

[0033] The electric ejection assembly 2 includes a solenoid valve 21 and a rotating arm 22. The top of the solenoid valve 21 is connected to the bottom of the rotating arm 22, and the door hook assembly 1 abuts against the top of the rotating arm 22. Both the solenoid valve 21 and the rotating arm 22 are movably positioned on the side of the switch bracket assembly 3 away from the microwave oven body. The solenoid valve 21 includes a valve body 211 and a valve core 212. The valve body 211 is connected to the rotating arm 22 via the valve core 212. The valve body 211 is mounted on the switch bracket assembly 3. One end of the valve core 212 is movably positioned inside the valve body 211, and the other end abuts against the rotating arm 22. The rotating arm 22 rotates to a corresponding degree as the valve core 212 moves up and down. When the valve core 212 extends upward, the rotating arm 22 rotates clockwise by a corresponding degree; when the valve core 212 retracts downward, the rotating arm 22 rotates counterclockwise by a corresponding degree. The top of the valve core 212 is curved.

[0034] Unlike existing technologies where most microwave ovens use a motor to drive a rotating arm to rotate around its axis to close the door, this application, through the coordinated arrangement of a solenoid valve 21 and a rotating arm 22, allows the solenoid valve 21 to activate when the microwave oven is powered on. The valve core 212 extends and retracts, pushing the rotating arm 22 upwards, causing the rotating arm 22 to move the door hook assembly 1 upwards, thus opening the door. When the door is open, the rotating arm 22 returns to its original position, and the door hook assembly 1 moves downwards to close the door. This also improves the automation of the door opening mechanism. Furthermore, the arrangement of the components within the aforementioned electrically operated ejector assembly 2 effectively and reasonably simplifies the structure of the door opening mechanism, reduces its cost, and increases the flexibility of its assembly and disassembly.

[0035] The rotary arm 22 includes a first rotary arm 221, a second rotary arm 222, a third rotary arm 223, and a fourth rotary arm 224. The first rotary arm 221, the second rotary arm 222, and the third rotary arm 223 are connected in sequence. The top of the first rotary arm 221 abuts against the door hook assembly 1; the bottom of the second rotary arm 222 abuts against the valve core 212 of the solenoid valve 21; the bottom of the fourth rotary arm 224 is located at the top of the end of the third rotary arm 223 away from the second rotary arm 222; and the top of the fourth rotary arm 224 is connected to the switch bracket assembly 3 in a manner that allows it to rotate left and right. The bottom of the second part of the rotating arm 222 includes a first plate 2221, a second plate 2222, and a third plate 2223, which are connected sequentially. The end of the first plate 2221 away from the second plate 2222 is connected to the first part of the rotating arm 221, and the end of the third plate 2223 away from the second plate 2222 is connected to the third part of the rotating arm 223. The bottom of the second plate 2222 is connected to the outer wall of the valve core 212. The second plate 2222 is an arc-shaped plate. The three sections of the rotating arm 223 include a first side plate 2231, a connecting plate 2232, a second side plate 2233, and a third side plate 2234. The first side plate 2231, connecting plate 2232, and second side plate 2233 are connected sequentially. The ends of the first side plate 2231, connecting plate 2232, and second side plate 2233 away from the switch bracket assembly 3 are all vertically mounted on the third side plate 2234. The side of the third side plate 2234 closest to the second side plate 2233 is connected to the bottom of the four sections of the rotating arm 224. The connecting plate 2232 is an arc-shaped plate, and the curvature of the arc surface of the connecting plate 2232 is greater than the curvature of the arc surface of the second plate 2232. The top of the four sections of the rotating arm 224 is an arc surface, and the width of the top of the four sections of the rotating arm 224 is greater than the width of the bottom of the four sections of the rotating arm 224.

[0036] The coordinated arrangement of the components of the rotary arm 22 ensures both installation stability and simplifies its structure. Utilizing the lever principle, the force generated by the movement of the solenoid valve 21 and its valve core 212 effectively lifts the rotary arm 22, thereby lifting the door hook assembly 1. Furthermore, the conformal design of certain parts of the rotary arm 22 to mate with the valve core 212 improves the stability of the contact between the solenoid valve 21 and the rotary arm 22, preventing slippage and misalignment between the hemispherical end of the valve core 212 and the rotary arm 22. This enhances the stability and safety of the connections between the components of the door opening device. The arc-shaped design at the top of the four sections 224 of the rotary arm improves the tightness of the connection between the rotary arm 22 and the switch bracket assembly 3, further enhancing the reliability of the connections between the components within the door opening device.

[0037] The switch bracket assembly 3 includes a limiting bracket 31, a bracket body 32, and a limiting hook 33. The limiting bracket 31, bracket body 32, and limiting hook 33 are connected sequentially, with both the limiting bracket 31 and limiting hook 33 vertically positioned on the side of the bracket body 32 furthest from the microwave oven body. The door hook assembly 1 is movable and abuts against or separates from the limiting bracket 31, and the rotating arm 22 is movable and connected to the limiting hook 33. The limiting bracket 31 serves to restrict the forward and backward movement of the rotating arm 22 and prevent excessive vertical rotation of the rotating arm 22. The limiting bracket 31 includes a limiting through hole 311, which is located on the limiting bracket 31. At least two limiting through holes 311 are provided, with the end of the door hook assembly 1 furthest from the door body passing through the limiting through hole 311, allowing the door hook assembly 1 to abut against or separate from the limiting through hole 311.

[0038] The coordinated arrangement of the limiting bracket 31, the bracket body 32, and the limiting hook 33 helps to reduce the space occupied by the overall structure of the door opening device, and also helps to provide support for the installation of the door hook assembly 1, the electric ejection assembly 2, and the switch assembly 4. It also makes it easier to install the door opening device on the main body of the microwave oven. In this way, the door opening system can be realized with the coordinated arrangement of the components in the door opening device, while fully guaranteeing the installation space of the integrated embedded small-capacity microwave oven with a capacity of 17L-20L.

[0039] The door hook assembly 1 includes a first door hook 11, a second door hook 12, and a connector 13. All three are connected to the door body. One end of the first door hook 11 is connected to one end of the second door hook 12 via the connector 13. The other ends of both the first and second door hooks 11 are movably connected to or separated from corresponding limiting through holes 311 on the switch bracket assembly 3. Two limiting through holes 311 are provided. The positions of the two limiting through holes 311 correspond to the positions of the first door hook 11 and the second door hook 12, respectively. In this embodiment, a tension spring is provided between the first door hook 11 and the second door hook 12, and the tension spring is parallel to the connector 13.

[0040] The two door hooks in the door hook assembly 1 enable the opening and closing of the switch assembly 4. This facilitates the activation of the internal solenoid valve 21, which in turn enables the electric ejector assembly 2 to drive the door hook assembly 1 to open the door. Furthermore, it enhances the appearance of the integrated built-in microwave oven, making it more aesthetically pleasing and easier to open.

[0041] The switch assembly 4 includes a first micro switch 41, a second micro switch 42, and a third micro switch 43. All three micro switches are mounted on the switch bracket assembly 3. The first and second micro switches 41 and 42 are located on the front side of the bracket body 32, while the third micro switch 43 is located on the rear side of the bracket body 32. The position of the third micro switch 43 corresponds to the position of the bottom end of the rotary arm 22. The first micro switch 41 abuts against or separates from the first hook 11, the second micro switch 42 abuts against or separates from the second hook 12, and the third micro switch 43 abuts against or separates from the rotary arm 22. Specifically, the first hook 11 is used to open or close the first micro switch 41; the second hook 12 is used to open or close the second micro switch 42; and the rotary arm 22 is used to open or close the third micro switch 43.

[0042] By cooperating with the various microswitches in conjunction with the door hook assembly 1 and the electric ejector assembly 2, the microwave oven door can be automatically opened and closed under the action of the solenoid valve 21. The addition of these microswitches also eliminates the need for handles or buttons on the outside of the microwave oven door, improving its aesthetics. Furthermore, the cooperation between the switch assembly 4, door hook assembly 1, and electric ejector assembly 2 enables automatic door opening and closing, enhancing the microwave oven's intelligence and automation, and improving the safety of opening and closing the door.

[0043] Working principle: When the solenoid valve 21 is activated, it drives its valve core 212 to extend upward, lifting the rotary arm 22 upward and opening the third micro switch 43. The rotary arm 22 drives the door hook assembly 1 to move upward, that is, the first door hook 11 is lifted upward to open the first micro switch 41, and the second door hook 12 is lifted upward to open the second micro switch 42, so that the microwave oven door opens.

[0044] When the door is fully open, the valve core 212 of the solenoid valve 21 extends downwards, returning to its original state. After the door hook assembly 1 performs the closing operation, the door hook assembly 1 drives the rotary arm 22 to move downwards, closing the third micro switch 43. That is, the first door hook 11 moves downwards to close the first micro switch 41, and the second door hook 12 moves downwards to close the second micro switch 42, thus closing the microwave oven door.

[0045] A microwave oven includes an integrated, embedded electric door opening device. One end of the electric door opening device is connected to the door, and the other end is connected to the main body. In this embodiment, the microwave oven is a low-capacity microwave oven, with a capacity ranging from 17L to 20L.

[0046] In this utility model, any microwave oven may include the electric door opening device structure described in this embodiment. In addition to the relevant structure and assembly relationship of the switch assembly 4 and the rotating arm 22 provided in this embodiment, the microwave oven also includes conventional components such as the door, outer shell, and oven cavity. Since these are all prior art, they will not be described in detail here.

[0047] 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 small-volume electric door opening device, characterized in that, The microwave oven includes a door hook assembly (1), an electric ejection assembly (2), a switch bracket assembly (3), and a switch assembly (4). The electric ejection assembly (2) and the switch assembly (4) are both mounted on the switch bracket assembly (3). The side of the switch bracket assembly (3) away from the electric ejection assembly (2) is connected to the main body of the microwave oven. There is a certain gap between the bottom of the switch bracket assembly (3) and the bottom of the microwave oven main body. One end of the door hook assembly (1) is connected to the door of the microwave oven. The other end of the door hook assembly (1) is able to slide up and down and abut or separate from the switch bracket assembly (3). The door hook assembly (1) abuts against the electric ejection assembly (2). At least one switch assembly (4) is provided. The switch assembly (4) abuts or separates from the door hook assembly (1) and the electric ejection assembly (2) respectively. The door hook assembly (1) and the switch bracket assembly (3) are arranged in parallel.

2. The small-volume electric door opening device according to claim 1, characterized in that, The electric ejection assembly (2) includes a solenoid valve (21) and a rotary arm (22); the top of the solenoid valve (21) is connected to the bottom of the rotary arm (22), and the door hook assembly (1) abuts against the top of the rotary arm (22); the solenoid valve (21) and the rotary arm (22) are both movably arranged on the side of the switch bracket assembly (3) away from the microwave oven body.

3. A small-volume electric door opening device according to claim 2, characterized in that, The solenoid valve (21) includes a valve body (211) and a valve core (212). The valve body (211) is connected to the rotary arm (22) through the valve core (212). The valve body (211) is mounted on the switch bracket assembly (3). One end of the valve core (212) is mounted inside the valve body (211) in a way that allows it to move up and down. The other end of the valve core (212) abuts against the rotary arm (22).

4. A small-volume electric door opening device according to claim 3, characterized in that, The top of the valve core (212) is an arc surface.

5. A small-volume electric door opening device according to claim 2, characterized in that, The rotary arm (22) includes a first rotary arm (221), a second rotary arm (222), a third rotary arm (223), and a fourth rotary arm (224). The first rotary arm (221), the second rotary arm (222), and the third rotary arm (223) are connected in sequence. The top of the first rotary arm (221) abuts against the door hook assembly (1). The bottom of the second rotary arm (222) abuts against the valve core (212) of the solenoid valve (21). The bottom of the fourth rotary arm (224) is located at the top of the end of the third rotary arm (223) away from the second rotary arm (222). The top of the fourth rotary arm (224) is connected to the switch bracket assembly (3) in a manner that allows it to rotate left and right.

6. A small-volume electric door opening device according to claim 5, characterized in that, The bottom of the second part of the rotating arm (222) includes a first plate (2221), a second plate (2222) and a third plate (2223). The first plate (2221), the second plate (2222) and the third plate (2223) are connected in sequence. The end of the first plate (2221) away from the second plate (2222) is connected to the first part of the rotating arm (221), and the end of the third plate (2223) away from the second plate (2222) is connected to the third part of the rotating arm (223). The bottom of the second plate (2222) is connected to the outer wall of the valve core (212).

7. A small-volume electric door opening device according to claim 6, characterized in that, The second plate (2222) is an arc-shaped plate.

8. A small-volume electric door opening device according to claim 1, characterized in that, The switch bracket assembly (3) includes a limiting bracket (31), a bracket body (32), and a limiting hook (33); the limiting bracket (31), the bracket body (32), and the limiting hook (33) are connected in sequence, and the limiting bracket (31) and the limiting hook (33) are both vertically arranged on the side of the bracket body (32) away from the microwave oven body; the door hook assembly (1) is able to abut or separate from the limiting bracket (31) in a movable manner, and the rotating arm (22) is able to be connected to the limiting hook (33) in a movable manner.

9. A small-volume electric door opening device according to claim 8, characterized in that, The limiting bracket (31) includes a limiting through hole (311); the door hook assembly (1) includes a first door hook (11), a second door hook (12) and a connector (13); the first door hook (11), the second door hook (12) and the connector (13) are all connected to the door body, one end of the first door hook (11) is connected to one end of the second door hook (12) through the connector (13), and the other ends of the first door hook (11) and the second door hook (12) are connected or separated from the corresponding limiting through hole (311) in a movable manner.

10. A microwave oven, characterized in that, The microwave oven includes a small-volume electric door opening device according to any one of claims 1-9, the door opening device being disposed inside the microwave oven.

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