Compact electric door opening device and microwave oven

Abstract

The utility model provides a compact type electric door opening device and a microwave oven. The device comprises an electric driving assembly, a supporting rod assembly, a door hook assembly, a support assembly and a switch assembly. One end of the electric driving assembly abuts against one end of the door hook assembly through the supporting rod assembly. The other end of the electric driving assembly is connected with a front panel of the microwave oven; one end of the door hook assembly can abut against or be separated from the support assembly in an up-down moving mode. The other end of the door hook assembly is connected with an oven door of the microwave oven; the supporting rod assembly and the door hook assembly abut against or are separated from the switch assembly, and the switch assembly is arranged on the support assembly. The electric driving assembly comprises a panel assembly, a motor, a machine body support assembly and a connector assembly. According to the compact type electric door opening device and the microwave oven, the structure of the door opening device can be effectively simplified, the door opening cost is reduced, and the compactness of connection between all components in the device is improved; and the disassembly and assembly convenience of the device in the microwave oven is improved.

Description

Technical Field

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

[0002] With the rapid development of smart home and IoT technologies, consumers' demands for home appliances have shifted from basic functions to intelligent, integrated, and space-efficient features. Integrated built-in microwave ovens, by eliminating exposed mechanical structures, have become a market favorite due to their sleek appearance and space adaptability. However, they place higher demands on door opening methods: they need to achieve contactless operation (such as touch control and sensing), precise control (motor drive and position feedback), safety protection (anti-pinch and anti-accidental touch), and low-noise operation within a limited space.

[0003] While existing electric door opening technologies, through motor drive and sensor coordination, initially meet the aforementioned requirements, they generally suffer from problems such as complex structure, high cost, and large space occupation, making it difficult to balance compact design with cost control. Therefore, researching how to simplify the structure of electric door opening devices, reduce costs, and decrease device size is of great significance.

[0004] Patent publication 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 body 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. However, on the one hand, the relatively complex structure tends to increase the cost of the door opening mechanism; on the other hand, the dispersed internal components of this door opening structure tend to occupy a large space, thus affecting the overall size of the microwave oven. Utility Model Content

[0005] In view of this, the present invention aims to propose a compact electric door opening device and microwave oven to solve the problems of existing electric door opening methods being relatively complex, resulting in high cost, low safety, dispersed structure, large space occupation, and low flexibility of disassembly and assembly. This invention effectively simplifies the structure of the door opening device, reduces opening costs, optimizes the opening method, improves device safety, enhances the compactness of connections between components, reduces device size, and improves ease of disassembly and assembly within the microwave oven. It achieves the door component opening system function while ensuring complete integration into the installation space of the microwave oven where the door opening device is to be installed.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] This utility model relates to a compact electric door opening device and a microwave oven. The device includes an electric drive assembly, a support rod assembly, a door hook assembly, a bracket assembly, and a switch assembly. One end of the electric drive assembly abuts against one end of the door hook assembly via the support rod assembly. The other end of the electric drive assembly is connected to the front panel of the microwave oven. One end of the door hook assembly abuts against or separates from the bracket assembly in a way that allows it to move up and down. The other end of the door hook assembly is connected to the oven door of the microwave oven. Both the support rod assembly and the door hook assembly abut against or separate from the switch assembly, which is mounted on the bracket assembly. The electric drive assembly includes a panel assembly, a motor, a body bracket assembly, and a connector assembly. The panel assembly is connected to both the body bracket assembly and the support rod assembly. One end of the motor is embedded inside the body bracket assembly, and the other end of the motor is connected to or separate from the support rod assembly via the connector assembly.

[0008] Furthermore, the electric drive assembly also includes a drive assembly bracket and a connector bracket assembly; one end of the drive assembly bracket is connected to the front panel of the microwave oven, and the other end of the drive assembly bracket is connected to the top of the body bracket assembly away from the motor; the connector bracket assembly is connected to the connector assembly and the body bracket assembly respectively.

[0009] Furthermore, the chassis support assembly includes a chassis shell, a first connector, a second connector, a third connector, and a fourth connector; the first connector is located at the bottom of the chassis shell; the second and third connectors are both located on the side of the chassis shell facing the motor; one end of the fourth connector is located on the side of the chassis shell away from the motor; and the other end of the fourth connector is connected to the drive assembly bracket.

[0010] Furthermore, at least one connection should be provided for both two-piece and three-piece connections.

[0011] Furthermore, the shapes of the connecting two pieces, the connecting three pieces, and the connecting four pieces are all hollow columnar.

[0012] Furthermore, the connector assembly includes a limiting member and contact members; the limiting member is connected to the output shaft of the motor and the connector bracket assembly respectively, and the contact members are evenly distributed along the circumference on the outer wall of the limiting member.

[0013] Furthermore, the limiting component includes a limiting hole one and a limiting hole two; both limiting hole one and limiting hole two are set on the central axis A of the limiting component; the inner side wall of limiting hole one fits against the outer side wall of the motor output shaft; limiting hole two fits against the left side of the connector bracket assembly.

[0014] Furthermore, the contact element includes a first contact surface, a second contact surface, a third contact surface, a fourth contact surface, and a fifth contact surface; the first contact surface is connected to the fifth contact surface in sequence through the second contact surface, the third contact surface, the fourth contact surface, and the fifth contact surface, which together form the top of the contact element; the third contact surface abuts against or separates from the strut assembly.

[0015] Furthermore, the first, third, and fifth contact surfaces are all curved surfaces.

[0016] A microwave oven includes the aforementioned compact electric door opening device, which is disposed inside the microwave oven.

[0017] Compared with the prior art, the compact electric door opening device and microwave oven described in this utility model have the following advantages:

[0018] By installing this device within the microwave oven, the structure of the door opening mechanism can be effectively simplified, the opening method optimized, the opening cost reduced, the device's safety improved, and the compactness of the connections between the various components within the device enhanced. The device's size is reduced, and its ease of installation and removal within the microwave oven is increased. It not only realizes the door component's door opening system function but also ensures complete integration into the installation space of the microwave oven where the door opening mechanism is to be installed. Furthermore, it results in a more aesthetically pleasing integrated microwave oven with easier door opening. Attached Figure Description

[0019] 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:

[0020] Figure 1 This is a schematic diagram of the structural assembly of the device within the overall machine.

[0021] Figure 2 An exploded view of the overall structure of the door opening device;

[0022] Figure 3 This is a schematic diagram of the overall structure of the electric drive assembly;

[0023] Figure 4 This is a schematic diagram of the device in the closed state;

[0024] Figure 5 This is a schematic diagram showing the positional relationship between the connector assembly and the support rod assembly (excluding the body support assembly and motor) when the device is in the closed state.

[0025] Figure 6 This is a schematic diagram of the device in the open state.

[0026] Figure 7 This is a schematic diagram showing the positional relationship between the connector assembly and the support rod assembly (excluding the body support assembly and motor) when the device is in the open position.

[0027] Figure 8 This is a schematic diagram of the overall structure of the strut assembly;

[0028] Figure 9 This is a schematic diagram of the overall structure of the fuselage support assembly;

[0029] Figure 10 This is a schematic diagram of the overall structure of the connector bracket assembly;

[0030] Figure 11 This is a schematic diagram of the overall structure of the connector assembly.

[0031] Explanation of reference numerals in the attached drawings: 1. Electric drive assembly; 10. Panel assembly; 101. Control panel; 102. Mounting bracket; 103. Support; 11. Motor; 12. Body bracket assembly; 121. Body frame housing; 122. Connector 1; 123. Connector 2; 124. Connector 3; 125. Connector 4; 13. Connector assembly; 131. Limiting element; 1311. Limiting hole 1; 1312. Limiting hole 2; 132. Contact element; 1321. Contact surface 1; 1322. Contact surface 2; 1323. Contact surface 3; 1324. Contact surface 4; 1325. Contact surface 5; 14. Drive assembly bracket; 15. Connector bracket assembly; 1 51. Limiting post 1; 152. Limiting post 2; 153. Connector; 154. First frame plate; 155. Second frame plate; 16. Limit switch; 2. Support rod assembly; 21. One support rod; 211. Reinforcing plate 1; 212. Reinforcing plate 2; 22. Two support rods; 221. Connecting ear; 222. Adapter plate; 223. Adapter block; 23. Three support rods; 3. Door hook assembly; 31. First door hook; 32. Second door hook; 33. Door hook connector; 4. Bracket assembly; 41. Limiting bracket; 411. Limiting through hole; 42. Bracket body; 5. Switch assembly; 51. First micro switch; 52. Second micro switch; 53. Third micro switch. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "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.

[0035] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] 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.

[0037] To address the problems of complex electric door opening mechanisms in existing technologies, which result in high cost, low security, fragmented structures, large space occupation, and limited assembly / disassembly flexibility, this embodiment proposes a compact electric door opening device and microwave oven. The device includes an electric drive assembly 1, a support rod assembly 2, a door hook assembly 3, a bracket assembly 4, and a switch assembly 5. One end of the electric drive assembly 1 abuts against one end of the door hook assembly 3 via the support rod assembly 2; the other end of the electric drive assembly 1 is connected to the front panel of the microwave oven. One end of the door hook assembly 3 is movable up and down and abuts or separates from the bracket assembly 4; the other end of the door hook assembly 3 is connected to the microwave oven door. Both the support rod assembly 2 and the door hook assembly 3 abut or separate from the switch assembly 5, which is mounted on the bracket assembly 4. The electric drive assembly 1 includes a panel assembly 10, a motor 11, a body bracket assembly 12, and a connector assembly 13. The panel assembly 10 is connected to the body support assembly 12 and the support rod assembly 2, respectively. One end of the motor 11 is embedded inside the body support assembly 12, and the other end of the motor 11 is connected to or separated from the support rod assembly 2 via the connector assembly 13. The bottom of the body support assembly 12 is set on the bottom plate of the microwave oven. There is a certain gap between the connector assembly 13 and the support rod assembly 2. In this embodiment, the motor 11 is an AC-controlled forward and reverse rotating motor. By reversing the motor 11, the connector assembly 13 is driven, and the connector assembly 13 abuts against the support rod assembly 2, causing the support rod assembly 2 to push against the door hook assembly 3, thus realizing the door opening function.

[0038] Unlike existing microwave ovens that use a pusher to open the door, this application utilizes the coordinated arrangement of the motor 11, body support assembly 12, and connector assembly 13 to slightly raise and lower the support rod assembly 2, thereby driving the door hook assembly 3 to move up and down and open the door. This effectively simplifies the structure of the door opening device, reduces opening costs, optimizes the opening method, improves device safety, and enhances the compactness of the connections between components. It also reduces the size of the device and improves the ease of installation and removal within the microwave oven. It achieves the door opening system function while ensuring complete integration into the installation space of the microwave oven where the door opening device is to be installed. Furthermore, it results in a more aesthetically pleasing and conveniently opened integrated microwave oven.

[0039] The electric drive assembly 1 also includes a drive assembly bracket 14 and a connector bracket assembly 15. One end of the drive assembly bracket 14 is connected to the front panel of the microwave oven, and the other end of the drive assembly bracket 14 is connected to the top of the body bracket assembly 12 on the side away from the motor 11. The connector bracket assembly 15 is connected to both the connector assembly 13 and the body bracket assembly 12. Additionally, the electric drive assembly 1 also includes a limit switch 16. The limit switch 16 is disposed on the connector bracket assembly 15 and abuts against or separates from the connector assembly 13.

[0040] The coordinated arrangement of the drive component bracket 14 and the connector bracket assembly 15 helps to improve the tightness of the connection between the body bracket assembly 12 and the panel assembly 10, and also improves the efficiency of their assembly and disassembly. In addition, the arrangement of the connector bracket assembly 15 helps to improve the reliability of the assembly between the body bracket assembly 12, the motor 11, and the connector assembly 13, and helps to enhance the mechanical stability of the device.

[0041] Specifically, the panel assembly 10 includes a control panel 101, a mounting bracket 102, and a support 103. Both the control panel 101 and the mounting bracket 102 are connected to the front panel of the microwave oven. The control panel 101 is located on the front side of the mounting bracket 102. One end of the support 103 is located on the inner wall of the left or right side of the mounting bracket 102; the other end of the support 103 is connected to the strut assembly 2. The mounting bracket 102 has a hollow frame structure. At least one support 103 is provided. Preferably, two supports 103 are provided, with one end of each support 103 located on the inner wall of the left and right sides of the mounting bracket 102, respectively. The other ends of each support 103 are connected to both ends of the strut assembly 2.

[0042] The control panel 101 allows for external control of the microwave oven's electric door opening mechanism. The support 103 is connected to the connecting ear 221, enabling the strut assembly 2 to rotate and limit its movement.

[0043] The fuselage support assembly 12 includes a fuselage shell 121, a connecting piece 122, a connecting piece 23, a connecting piece 34, and a connecting piece 45. The fuselage shell 121 is integrally formed with the connecting pieces 122, 123, 124, and 125. The connecting piece 122 is located at the bottom of the fuselage shell 121; the connecting pieces 123 and 124 are both located on the side of the fuselage shell 121 facing the motor 11; one end of the connecting piece 45 is located on the side of the fuselage shell 121 away from the motor 11; the other end of the connecting piece 45 is connected to the drive assembly bracket 14. At least one connecting piece 123 and one connecting piece 124 are provided. The fuselage shell 121 has a semi-enclosed frame structure, and the motor 11 is embedded inside the fuselage shell 121.

[0044] By arranging the components within the body bracket assembly 12, the device size can be reduced while providing installation space for the motor 11, thus protecting the motor 11. It also helps to provide support for the connector bracket assembly 15 and serves to fix the electric drive assembly 1.

[0045] Preferably, two connecting pieces 123 and two connecting pieces 124 are provided. The bottom of connecting piece 123 is located on the rear side of the top outer wall of the body frame 121, and the top of connecting piece 123 is located on the front side of the bottom inner wall of the body frame 121. The bottom of connecting piece 124 is located on the front side of the top outer wall of the body frame 121, and the top of connecting piece 124 is located on the rear side of the bottom inner wall of the body frame 121. Connecting pieces 123, 124, and 125 are all hollow cylindrical in shape. Connecting piece 122 is cylindrical. Connecting piece 122 and connecting piece 123 are connected to the bottom plate of the microwave oven and the connector bracket assembly 15, respectively. Connecting piece 124 is left unused and is used as an alternative connection hole when multiple fixation is required.

[0046] By arranging the connecting components 123 (two parts), 124 (three parts), and 125 (four parts), the stability and convenience of connecting the various components within the device are improved, thus increasing the efficiency of device assembly and disassembly.

[0047] The connector assembly 13 includes a limiting member 131 and contact members 132. The limiting member 131 is connected to the output shaft of the motor 11 and the connector bracket assembly 15, respectively. The contact members 132 are evenly distributed along the circumference on the outer side wall of the limiting member 131. At least two contact members 132 are provided, preferably three.

[0048] By setting the limiting member 131 and the contact member 132, it is beneficial to reduce the size of the device and limit the range of motion of the strut assembly 2, which is beneficial to further reduce the space occupied by the device during the movement.

[0049] The limiting member 131 includes a limiting hole 1311 and a limiting hole 1312. Both the limiting hole 1311 and the limiting hole 1312 are located on the central axis A of the limiting member 131. The inner sidewall of the limiting hole 1311 is in contact with the outer sidewall of the output shaft of the motor 11. The limiting hole 1312 is in contact with the left side of the connector bracket assembly 15.

[0050] By differentiating the first limiting hole 1311 and the second limiting hole 1312, it is beneficial to enhance the stability of the connection between the connector assembly 13 and the motor 11, reduce the occurrence of the connector assembly 13 falling off during movement, and limit the degree of installation of the connector assembly 13 on the motor 11, so as to avoid the connector assembly 13 being installed too close to the motor 11, thereby affecting the contact and separation between the connector assembly 13 and the support rod assembly 2.

[0051] Contact 132 includes a first contact surface 1321, a second contact surface 1322, a third contact surface 1323, a fourth contact surface 1324, and a fifth contact surface 1325. The first contact surface 1321 is connected to the fifth contact surface 1325 sequentially via the second contact surface 1322, the third contact surface 1323, the fourth contact surface 1324, and the fifth contact surface 1325. The top of the contact 132 is formed by these components. The contact 1322 has a hollow internal structure. The first contact surface 1321, the third contact surface 1323, and the fifth contact surface 1325 are all curved surfaces. The second contact surface 1322 and the fourth contact surface 1324 are both planar surfaces. All contact surfaces 1321, 1322, 1323, 1324, and 1325 are connected by arcs; that is, the five surfaces are connected by arc transitions; contact surface 1323 abuts against or separates from the strut assembly 2.

[0052] By configuring the contact surfaces in contact member 132, when motor 11 drives connector assembly 13 to abut against support rod assembly 2, the arc surfaces of contact surface 1321 and contact surface 1322 will smoothly transition to contact surface 1323. Contact surface 1323 will abut against the corresponding plate of support rod assembly 2. Since contact surface 1323 is flat, the force-bearing area between connector assembly 13 and support rod assembly 2 is large enough to meet the mechanical stability characteristics of the overall structure of the device. This facilitates easier separation of door hook assembly 3 from switch assembly 5 and bracket assembly 4, enabling door opening. The combination of arc surfaces and flat surfaces in contact member 132 of connector assembly 13 helps reduce friction and wear between moving parts, making the force transition of each moving part during movement smoother, thereby greatly improving the service life of the product.

[0053] The connector bracket assembly 15 includes a first bracket plate 154 and a second bracket plate 155. The bottom outer edge of the first bracket plate 154 is connected to the right side of the second bracket plate 155. The first bracket plate 154 and the second bracket plate 155 are arranged perpendicularly and are integrally formed. The first bracket plate 154 is a flat plate, and the second bracket plate 155 is an arc plate. The second bracket plate 155 is arranged in a semi-enclosed manner around the bottom outer edge of the first bracket plate 154.

[0054] The connector bracket assembly 15 also includes a limiting post 151, a limiting post 152, and a connector 153. One end of both the limiting post 151 and the limiting post 152 is located on the left side of the first bracket plate 154, and the connector 153 is located on the left edge of the second bracket plate 155. The outer wall of the other end of the limiting post 151 is fitted against the inner wall of the limiting hole 1312 of the limiting member 131 in the connector assembly 13. The outer wall of the other end of the limiting post 152 is fitted against the inner wall of the through hole of the limit switch 16. Both the limiting post 151 and the limiting post 152 are cylindrical. At least one limiting post 152 is provided. The connector 153 has a connecting hole. The inner wall of the connecting hole of the connector 153 is locked to the connecting member 123 of the body bracket assembly 12 by screws.

[0055] By using curved and flat transitions in the appearance of the body support assembly 12 and connector support assembly 15 of the electric drive assembly 1, the assembly space of the motor 11, limit switch 16 and connector assembly 13 is guaranteed, and the space occupied by the electric drive assembly 1 in the overall structure of the microwave oven is reduced. The stepped structure of the connector support assembly 15 also guarantees the assembly space of the limit switch 16 and the movement space of the connector assembly 13, so that the internal contact surface can not interfere with other components when it abuts the support rod assembly 2 and the limit switch 16.

[0056] The strut assembly 2 includes a first strut 21, a second strut 22, and a third strut 23. The first strut 21 is located at the bottom of the second strut 22, one top end of the second strut 22 is connected to the support 103 of the panel assembly 10, and the other end of the second strut 22 is connected to the bottom of the third strut 23; the top of the third strut 23 abuts against the door hook assembly 3.

[0057] By coordinating the components of the strut assembly 2, the reliability of its installation is improved, the flexibility of its assembly and disassembly is ensured, and the overall mechanical stability of the strut assembly 2 is enhanced.

[0058] The strut 21 includes a first reinforcing plate 211 and a second reinforcing plate 212. Both the first reinforcing plate 211 and the second reinforcing plate 212 are vertically disposed at the bottom of the strut 22; the second reinforcing plate 212 is disposed behind the first reinforcing plate 211. The first reinforcing plate 211 and the second reinforcing plate 212 are perpendicularly disposed. At least one second reinforcing plate 212 is provided. The second reinforcing plate 212 is wedge-shaped. Preferably, two second reinforcing plates 212 are provided. The two second reinforcing plates 212 are arranged parallel to each other. Both second reinforcing plates 212 are vertically disposed behind the first reinforcing plate 211.

[0059] By setting the strut piece 21, the structure of the strut assembly 2 is simplified, the volume of the strut assembly 2 is reduced, the tightness of the connection between the strut assembly 2 and the motor 11 is improved, and the manufacturing cost of the strut assembly 2 is reduced while ensuring the structural stability and safety of the strut assembly 2.

[0060] Additionally, the two support rods 22 include a connecting ear 221, an adapter plate 222, and an adapter block 223. The connecting ear 221 is connected to one end of the adapter block 223 and the first support rod 21 via the adapter plate 222; the other end of the adapter block 223 abuts against the door hook assembly 3 via the third support rod 23. Specifically, the connecting ear 221 and the adapter plate 222 are vertically aligned. The adapter block 223 is vertically positioned on top of the adapter plate 222. At least one connecting ear 221 is provided.

[0061] Preferably, two connecting ears 221 are provided to improve the mechanical stability of the strut assembly 2. Each connecting ear 221 has an ear hole, and the support 103 has a positioning hole. When installing the connecting ear 221 and the support 103, after aligning the ear hole with the positioning hole, the connecting ear 221 is connected to the corresponding support 103 via a fastener, which passes through the connecting through hole and the positioning hole.

[0062] The adapter block 223 includes an adapter part 1, an adapter part 2, and an adapter part 3. All three parts are located on top of the adapter plate 222; the adapter part 1 is connected to the adapter part 3 via the adapter part 2. The adapter part 1 and the adapter part 3 are both hollow frame structures, while the adapter part 2 is a flat plate. The adapter part 2 is located on the same plane as the top of the adapter part 1 and the adapter part 3. Both the adapter part 1 and the adapter part 3 have a first through hole to reduce the weight of the adapter block 223, reduce the difficulty of the motor 11 acting on the support rod assembly 2, and also help reduce power consumption. The top of the adapter part 3 is connected to the three support rod pieces 23.

[0063] By coordinating the components within the two support rods 22, on the one hand, it lays the groundwork for a tight fit between the door hook assembly 3 and the support rod assembly 2; on the other hand, it enables a movable connection between the electric drive assembly 1 and the support rod assembly 2.

[0064] Furthermore, the three-piece support rod 23 includes a first side plate, a second side plate, and a third side plate. One end of the first side plate is connected to one end of the third side plate via the second side plate, and the other ends of the first and third side plates are vertically positioned at the top of the transition block 223 of the two-piece support rod 22. A second through hole is formed between the first, second, and third side plates, which serves to support the door hook assembly 3 while also helping to reduce the weight of the device. The first and third side plates are both flat plates. The second side plate includes a first plate and a second plate, which are smoothly connected by an arc. The first plate is positioned on the front side of the second plate. The first plate has a certain angle with the top of the transition block 223. The second plate is parallel to the top of the transition block 223. The angle between the first and second plates ranges from 90° to 180°.

[0065] The arc connection between the first and second plates allows the three support rods 23 to maintain contact with the door hook assembly 3 at different positions in both states: when the support rods 23 are lifted up or lowered under the action of the door hook assembly 3. This helps prevent components inside the device from falling off and also improves the stability and reliability of the device. Furthermore, the combination of the various components in the support rod assembly 2 makes it easier to assemble and disassemble on the microwave oven. The support rod 21 helps to improve the strength of the support rod assembly 2, reduce deformation and breakage due to prolonged stress, and improve its service life. The connecting ear 221 is connected to the support 103 of the panel assembly 10, which limits the support rod assembly 2 and allows the support rod assembly 2 to rotate at a certain angle. The support rod 23 is set to abut against the door hook assembly 3. The second side plate of the support rod 23 abuts against the second door hook 32 of the door hook assembly 3. The first side plate and the third side plate are connected to the two ends of the second side plate, which provides support for the second side plate and ensures the mechanical strength of the second side plate in supporting the door hook assembly 3.

[0066] The bracket assembly 4 includes a limiting bracket 41 and a bracket body 42. The limiting bracket 41 is vertically disposed on the side of the bracket body 42 away from the microwave oven body. The door hook assembly 3 is able to move up and down and abut or separate from the limiting bracket 41. The limiting bracket 41 includes a limiting through hole 411, which is disposed on the limiting bracket 41. At least two limiting through holes 411 are provided, and the end of the door hook assembly 3 away from the door body passes through the limiting through hole 411, allowing the door hook assembly 3 to abut or separate from the limiting through hole 411.

[0067] The coordinated arrangement of the limiting bracket 41 and the bracket body 42 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 3, the electric drive assembly 1, the support rod assembly 2, and the switch assembly 5. 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.

[0068] The door hook assembly 3 includes a first door hook 31, a second door hook 32, and a door hook connector 33. All three are connected to the door body. One end of the first door hook 31 is connected to one end of the second door hook 32 via the door hook connector 33. The other ends of both the first and second door hooks are connected to corresponding limiting holes on the bracket assembly 4 in a way that allows them to move up and down. The door hook connector 33 is connected to the microwave oven door via a spring. In this embodiment, a tension spring is provided between the first door hook 31 and the second door hook 32, and the tension spring is parallel to the door hook connector 33.

[0069] The two door hooks in the door hook assembly 3 enable the opening and closing of the switch assembly 5. This facilitates the opening of the door by starting the internal motor 11, which in turn drives the support rod assembly 2 to move the door hook assembly 3. Furthermore, it enhances the appearance of the integrated built-in microwave oven, making it more aesthetically pleasing and easier to open.

[0070] The switch assembly 5 includes a first micro switch 51, a second micro switch 52, and a third micro switch 53. All three micro switches are mounted on the bracket assembly 4, and are respectively located on the front side of the bracket body 42. The first micro switch 51 abuts against or separates from the first door hook 31, the second micro switch 52 abuts against or separates from the second door hook 32, and the third micro switch 53 abuts against or separates from the support rod assembly 2. Specifically, the first door hook 31 is used to open or close the first micro switch 51; the second door hook 32 is used to open or close the second micro switch 52; and the three support rods 23 of the support rod assembly 2 are used to open or close the third micro switch 53.

[0071] By coordinating the various microswitches with the door hook assembly 3 and the support rod assembly 2, the device achieves a simple and reasonable structure, low cost, and flexible installation and disassembly. It also enables automatic opening and closing of the microwave oven door under the action of the motor 11. Furthermore, the addition of the microswitches eliminates the need for handles and buttons on the outside of the microwave oven door, improving its aesthetics. In addition, the coordination of the switch assembly 5 with the door hook assembly 3 and the electric drive assembly 1 enables automatic opening and closing of the microwave oven door, enhancing its intelligence and automation, and improving safety during door opening and closing.

[0072] Working principle:

[0073] When the microwave oven is powered on, after touching the door open button, the motor 11 drives the connector assembly 13 to abut against and drive the support rod assembly 2. The support rod assembly 2 lifts the door hook assembly 3 and separates from the third micro switch 53. The first door hook 31 separates from the first micro switch 51, the second door hook 32 separates from the second micro switch 52, and the door hook assembly 3 separates from the limit bracket 41, realizing the electronic opening of the microwave oven door.

[0074] After the microwave wave achieves electronic door opening, the motor 11 continues to rotate, causing the inner connector assembly 13 to abut against the limit switch 16. The limit switch 16 opens, controlling the motor 11 to stop and resetting the connector assembly 13, thus achieving the effect of not interfering with manual door closing of the microwave oven. The electric door opening device of this embodiment is suitable for small microwave ovens with a capacity of 17-20L.

[0075] A microwave oven includes a compact electric door opening device integrated into its interior. The device is located within the microwave oven. One end of the electric door opening device is connected to the oven door, and the other end is connected to the main body of the microwave oven. In this embodiment, the microwave oven is a low-capacity microwave oven.

[0076] In this utility model, any microwave oven may include the compact electric door opening device structure described in this embodiment. In addition to the relevant structures and assembly relationships of the electric drive assembly 1 and the support rod assembly 2 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.

[0077] 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 compact electric door opening device, characterized in that, The microwave oven includes an electric drive assembly (1), a strut assembly (2), a door hook assembly (3), a bracket assembly (4), and a switch assembly (5). One end of the electric drive assembly (1) abuts against one end of the door hook assembly (3) via the strut assembly (2). The other end of the electric drive assembly (1) is connected to the front panel of the microwave oven. One end of the door hook assembly (3) abuts against or separates from the bracket assembly (4) in a way that allows it to move up and down. The other end of the door hook assembly (3) is connected to the microwave oven door. Both the strut assembly (2) and the door hook assembly (3) are connected to the microwave oven door. The switch assembly (5) is abutted or separated, and the switch assembly (5) is set on the bracket assembly (4); wherein, the electric drive assembly (1) includes a panel assembly (10), a motor (11), a body bracket assembly (12) and a connector assembly (13); the panel assembly (10) is connected to the body bracket assembly (12) and the strut assembly (2) respectively, one end of the motor (11) is embedded in the body bracket assembly (12), and the other end of the motor (11) is connected or separated from the strut assembly (2) through the connector assembly (13).

2. A compact electric door opening device according to claim 1, characterized in that, The electric drive assembly (1) also includes a drive assembly bracket (14) and a connector bracket assembly (15); one end of the drive assembly bracket (14) is connected to the front panel of the microwave oven, and the other end of the drive assembly bracket (14) is connected to the top of the body bracket assembly (12) away from the motor (11); the connector bracket assembly (15) is connected to the connector assembly (13) and the body bracket assembly (12) respectively.

3. A compact electric door opening device according to claim 1, characterized in that, The fuselage support assembly (12) includes a fuselage shell (121), a connecting piece (122), a connecting piece (123), a connecting piece (124), and a connecting piece (125); the connecting piece (122) is located at the bottom of the fuselage shell (121); the connecting pieces (123) and (124) are both located on the side of the fuselage shell (121) facing the motor (11); one end of the connecting piece (125) is located on the side of the fuselage shell (121) away from the motor (11); the other end of the connecting piece (125) is connected to the drive component support (14).

4. A compact electric door opening device according to claim 3, characterized in that, At least one of each of the two connecting pieces (123) and three connecting pieces (124) is provided.

5. A compact electric door opening device according to claim 3, characterized in that, The connecting two pieces (123), the connecting three pieces (124), and the connecting four pieces (125) are all hollow columnar in shape.

6. A compact electric door opening device according to claim 2, characterized in that, The connector assembly (13) includes a limiting member (131) and a contact member (132); the limiting member (131) is connected to the output shaft of the motor (11) and the connector bracket assembly (15) respectively, and the contact member (132) is evenly distributed along the circumference on the outer side wall of the limiting member (131).

7. A compact electric door opening device according to claim 6, characterized in that, The limiting member (131) includes a limiting hole (1311) and a limiting hole (1312); both the limiting hole (1311) and the limiting hole (1312) are located on the central axis A of the limiting member (131); the inner side wall of the limiting hole (1311) is in contact with the outer side wall of the output shaft of the motor (11); the limiting hole (1312) is in contact with the left side of the connector bracket assembly (15).

8. A compact electric door opening device according to claim 6, characterized in that, The contact element (132) includes a contact surface (1321), a contact surface (1322), a contact surface (1323), a contact surface (1324), and a contact surface (1325); the contact surface (1321) is connected to the contact surface (1325) in sequence through the contact surface (1322), the contact surface (1323), the contact surface (1324), and the contact surface (1325); the contact surface (1321), the contact surface (1322), the contact surface (1323), the contact surface (1324), and the contact surface (1325) form the top of the contact element (132); the contact surface (1323) abuts against or separates from the strut assembly (2).

9. A compact electric door opening device according to claim 8, characterized in that, The contact surface (1321), contact surface (1323), and contact surface (1325) are all curved surfaces.

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

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