Electric door opening device and microwave oven

Abstract

The utility model provides an electric door opening device and a microwave oven. The door opening device comprises a door hook assembly, an electric ejection assembly, a support and a switch assembly. The electric ejection assembly and the switch assembly are arranged on the support, and one end, far away from the electric ejection assembly, of the support 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 electric ejection assembly in an up-down sliding mode, 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; according to the 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 safety of the door opening device is improved, and the disassembly and assembly flexibility of the door opening device is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of microwave ovens, and in particular to an electric door opening device and a microwave oven. Background Art

[0002] Traditional cooking appliances, such as microwave ovens and ovens, typically use manual or push-button door opening methods. To open the door, users typically pull the door handle or press a button. With the continued advancement of technology and improvements in people's living standards, the appearance of integrated embedded microwaves is becoming more aesthetically pleasing than manual or push-button door opening methods. Therefore, the use of electric door opening methods, which offer safety, aesthetics, convenience, and ease of use, is becoming increasingly common. While electric door opening can greatly improve our quality of life, current electric door opening methods are complex and less secure. Therefore, research into simplifying and improving the safety of electric door opening structures is crucial.

[0003] Patent CN118623351A discloses a microwave oven with an electric door opening, comprising a door body, a door hook bracket slidably connected to the door body; a housing, a first door hook and a second door hook capable of engaging with the housing, and the housing and the door body being connected via a door opener; an interlocking bracket fixedly connected to the housing; a pusher connected to the interlocking bracket, the pusher having a slot, capable of driving the second door hook to move and disengage from the housing; a driving member connected to the interlocking bracket, the driving member including a block capable of engaging or disengaging with the slot; and a reset member fixedly connected to the interlocking bracket and the pusher, capable of driving the pusher to move when the driving member is damaged and immobilized. This electric door opening structure can improve the safety of the microwave oven's electric door opening, but due to its complexity, it is prone to high costs. Utility Model Content

[0004] In view of this, the present invention aims to propose an electric door opening device and a microwave oven to solve the problems in the prior art that the electric door opening device is relatively complex, costly, and less safe; thereby simplifying the structure of the electric door opening device, reducing the cost of the door opening device, improving the safety of the door opening device, and enhancing the flexibility of disassembly and assembly of the door opening device, thereby realizing the door assembly opening system function and ensuring that it is fully integrated into the installation space of the microwave oven where the door opening device is required to be installed.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] The utility model relates to an electric door opening device and a microwave oven, wherein the electric door opening device comprises a door hook assembly, an electric ejection assembly, a support and a switch assembly; the electric ejection assembly and the switch assembly are both arranged on the support, and one end of the support away from the electric ejection assembly is connected to the main body of the microwave oven; one end of the door hook assembly is connected to the door body of the microwave oven, and the other end of the door hook assembly is in a manner of being able to slide up and down to abut or separate from the electric ejection assembly, and at least one switch assembly is provided, and the switch assembly is respectively in abutment with or separate from the door hook assembly and the electric ejection assembly.

[0007] Furthermore, the electric ejection assembly includes a motor, a rotating arm wheel and a rotating arm. The output shaft of the motor is connected to the support through the rotating arm wheel, and the rotating arm is connected to the support in a rotatable manner; the outer side wall of the rotating arm wheel abuts or separates from one end of the rotating arm, and the other end of the rotating arm is connected to the door hook assembly.

[0008] Furthermore, the rotating arm wheel includes a center hole, and the inner side wall of the center hole is in contact with or separated from the outer side wall of the output shaft of the motor.

[0009] Furthermore, the rotating arm wheel also includes a support arm and a reinforcing rib, and the support arm is connected to the central hole through the reinforcing rib.

[0010] Furthermore, the number of support arms and reinforcing ribs is n, where n is a positive integer.

[0011] Furthermore, the swivel arm includes a first swivel arm and a second swivel arm, the first swivel arm is connected to the second swivel arm, the top of the first swivel arm is connected to the door hook assembly, and the second swivel arm is in contact with or separated from the outer ring of the swivel arm wheel; the second swivel arm is arranged on the support in a rotatable manner.

[0012] Furthermore, the height L1 of the first rotating arm is greater than the height L2 of the second rotating arm.

[0013] Furthermore, the door hook assembly includes a first door hook, a second door hook and a connecting piece; the first door hook, the second door hook and the connecting piece 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 connecting piece, and the other end of the first door hook and the other end of the second door hook are connected to the corresponding limiting holes on the support in a manner that can move up and down.

[0014] Furthermore, the switch assembly includes a first microswitch, a second microswitch, a third microswitch, and a fourth microswitch; the first microswitch, the second microswitch, the third microswitch, and the fourth microswitch are all arranged on a support, the first microswitch abuts or separates from the first door hook, the second microswitch abuts or separates from the second door hook, the third microswitch abuts or separates from the rotating arm wheel, and the fourth microswitch abuts or separates from the rotating arm.

[0015] A microwave oven comprises the electric door opening device, wherein the electric door opening device is arranged in the microwave oven.

[0016] Compared with the prior art, the electric door opening device and microwave oven described in the present invention have the following beneficial effects:

[0017] Through the setting of the door opening device, the structure of the electric door opening device can be simplified, 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, which not only realizes the door assembly opening system function, but also ensures that it is completely integrated into the installation space of the microwave oven where the door opening device needs to be installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of the switch device installed in the microwave oven;

[0020] Figure 2 Schematic diagram of the overall structure of the switch device;

[0021] Figure 3 It is a structural schematic diagram of the switch device in the door-open state;

[0022] Figure 4 It is a structural schematic diagram of the switch device in the closed state;

[0023] Figure 5 It is a schematic diagram of the overall structure of the rotary arm.

[0024] Explanation of the accompanying drawings: 1. Door hook assembly; 11. First door hook; 12. Second door hook; 13. Connecting piece; 2. Electric ejection assembly; 21. Motor; 22. Rotating arm wheel; 221. Center hole; 222. Support arm; 223. Reinforcing rib; 23. Rotating arm; 231. Rotating arm one; 232. Rotating arm two; 2321. First side panel; 2322. Second side panel; 2323. Third side panel; 2324. Fourth side panel; 3. Support; 31. Support one; 32. Support two; 4. Switch assembly; 41. First micro switch; 42. Second micro switch; 43. Third micro switch; 44. Fourth micro switch. DETAILED DESCRIPTION

[0025] The following will describe the utility model concepts of the present disclosure using terms commonly used by those skilled in the art to convey the essence of their work to other persons skilled in the art. However, these utility model concepts can be embodied in many different forms and should not be considered as limited to the embodiments described herein.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] This embodiment is directed to a microwave oven, and similar to conventional microwave ovens, the overall structure is composed of a door, an outer shell, and a furnace cavity.

[0030] In order to solve the problems in the prior art that electric door opening devices are relatively complex, costly, and less safe, this embodiment proposes an electric door opening device and a microwave oven, wherein the electric door opening device includes a door hook assembly 1, an electric ejection assembly 2, a support 3, and a switch assembly 4; the electric ejection assembly 2 and the switch assembly 4 are both arranged on the support 3, and the end of the support 3 away from the electric ejection assembly 2 is connected to the main body of the microwave oven; one end of the door hook assembly 1 is connected to the door body of the microwave oven, and the other end of the door hook assembly 1 is slidable up and down to abut or separate from the electric ejection assembly 2, and at least one switch assembly 4 is provided, and the switch assembly 4 abuts or separates from the door hook assembly 1 and the electric ejection assembly 2, respectively.

[0031] Through the coordinated arrangement of the switch assembly 4, the door hook assembly 1, the electric ejection assembly 2 and the support 3, the structure of the electric door opening device can be simplified, 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, which not only realizes the door opening system function of the door assembly, but also ensures that it is completely integrated into the installation space of the microwave oven where the door opening device is required to be installed.

[0032] The electric ejection assembly 2 includes a motor 21, a rotating arm wheel 22, and a swivel arm 23. The output shaft of the motor 21 is connected to the support 3 via the rotating arm wheel 22, and the swivel arm 23 is rotatably connected to the support 3. The outer wall of the rotating arm wheel 22 abuts or separates from one end of the swivel arm 23, and the other end of the swivel arm 23 is connected to the door hook assembly 1. The rotating arm wheel 22 includes a center hole 221, and the inner wall of the center hole 221 abuts or separates from the outer wall of the output shaft of the motor 21 in a detachable manner. The rotating arm wheel 22 also includes a support arm 222 and a reinforcing rib 223. The support arm 222 is connected to the center hole 221 via the reinforcing rib 223. There are n support arms 222 and reinforcing ribs 223, where n is a positive integer. The n support arms 222 are connected end to end to form a closed outer ring of the rotating arm wheel 22, and each support arm 222 is connected to the center hole 221 via a reinforcing rib 223. Each arm 222 has a certain curvature, and each arm 222 is concave from the outside to the inside.

[0033] By coordinating the motor 21, the arm wheel 22, and the swivel arm 23, when the microwave oven is powered on, the motor 21 starts, driving the arm wheel 22 to rotate about the axis of rotation, thereby pressing the swivel arm 23 downward, causing the swivel arm 23 to move the door hook assembly 1 upward, lifting the door hook assembly 1 to open the door; when the door is open, the arm wheel 22 rotates again to release the swivel arm 23, which returns to its original position, driving the door hook assembly 1 downward to close the door. This also helps improve the automation of the door opening device. In addition, the arrangement of the various components of the electric ejection assembly 2 can effectively and reasonably simplify the structure of the door opening device, reduce the cost of the door opening device, and improve the flexibility of the door opening device in assembly and disassembly.

[0034] The pivoting arm 23 includes a first pivoting arm 231 and a second pivoting arm 232. The first pivoting arm 231 is connected to the second pivoting arm 232. The top of the first pivoting arm 231 is connected to the door hook assembly 1, and the second pivoting arm 232 abuts or separates from the outer ring of the pivoting arm wheel 22. The second pivoting arm 232 is rotatably mounted on the support 3. The height L1 of the first pivoting arm 231 is greater than the height L2 of the second pivoting arm 232. The second pivoting arm 232 includes a first side plate 2321, a second side plate 2322, a third side plate 2323, and a fourth side plate 2324. The first side plate 2321, the second side plate 2322, the third side plate 2323, and the fourth side plate 2324 are connected in sequence. The side of the first side plate 2321 away from the second side plate 2322 and the side of the fourth side plate 2324 away from the third side plate 2323 are both connected to the first pivoting arm 231. The first side panel 2321 and the third side panel 2323 are both at a certain angle to the second side panel 2322, and the angles between the first side panel 2321 and the third side panel 2323 and the second side panel 2322 are in the range of 90°-180°. The third side panel 2323 and the fourth side panel 2324 are arranged perpendicularly.

[0035] The coordinated arrangement of the various components of the swivel arm 23 ensures both the stability of the installation of the swivel arm 23 and the simplification of its structure. By utilizing the principle of leverage, the force generated by the motor 21 driving the swivel arm wheel 22 during operation can be effectively utilized to drive the swivel arm 23 upward, thereby driving the door hook assembly 1 upward. Furthermore, the tilted arrangement of the second side plate 2322 of the second swivel arm 232 ensures that the swivel arm 23 and the swivel arm wheel 22 can both contact each other and ensure that the swivel arm wheel 22 can rotate freely, thereby avoiding excessive friction that would cause significant wear and tear on the electric ejector assembly 2. This helps to extend the service life of the electric ejector assembly 2 and enhance the safety and stability of the automatic opening and closing of the furnace door.

[0036] The door hook assembly 1 includes a first door hook 11, a second door hook 12, and a connector 13. Each of the first door hook 11, the second door hook 12, and the connector 13 is 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 the first door hook 11 and the second door hook 12 are each connected to corresponding retaining holes on the support 3 in a manner that allows for vertical movement. In this embodiment, a tension spring is provided between the first door hook 11 and the second door hook 12, and is arranged parallel to the connector 13.

[0037] The two door hooks in the door hook assembly 1 enable the switch assembly 4 to be opened or closed, which is beneficial for starting the internal motor 21, thereby enabling the electric ejection assembly 2 to drive the door hook assembly 1 to open the door. At the same time, it is beneficial for improving the appearance of the integrated built-in microwave oven, making the microwave oven more beautiful and more convenient to open the door.

[0038] Support 3 includes a first support 31 and a second support 32. Both are located on the main body. First support 31 is connected to door hook assembly 1, while second support 32 is connected to electric ejection assembly 2. First support 31 supports and limits door hook assembly 1, while second support 32 supports motor 21, rotating arm wheel 22, slewing arm 23, and switch assembly 4. Limiting holes are provided on first support 31.

[0039] The switch assembly 4 includes a first microswitch 41, a second microswitch 42, a third microswitch 43, and a fourth microswitch 44. The first microswitch 41, the second microswitch 42, the third microswitch 43, and the fourth microswitch 44 are all arranged on the support 3, wherein the first microswitch 41 and the second microswitch 42 are both arranged on the first support 31, and the third microswitch 43 and the fourth microswitch 44 are both arranged on the second support 32.

[0040] The first microswitch 41 abuts or separates from the first door hook 11, the second microswitch 42 abuts or separates from the second door hook 12, the third microswitch 43 abuts or separates from the rotating arm wheel 22, and the fourth microswitch 44 abuts or separates from the rotating arm 23. The first door hook 11 is used to turn the first microswitch 41 on or off; the second door hook 12 is used to turn the second microswitch 42 on or off; the rotating arm wheel 22 is used to turn the third microswitch 43 on or off; and the rotating arm 23 is used to turn the fourth microswitch 44 on or off.

[0041] By coordinating the microswitches with the door hook assembly 1 and the electric ejector assembly 2, the microwave oven door can be automatically opened and closed by the motor 21. The addition of the microswitches also eliminates the need for handles and buttons on the outside of the microwave oven door, thereby improving the microwave oven's aesthetics. Furthermore, the coordination of the switch assembly 4 with the door hook assembly 1 and the electric ejector assembly 2 enables automatic door opening and closing, enhancing the microwave oven's intelligence and automation, and contributing to improved door safety.

[0042] Working principle: When the motor 21 starts, it drives the arm wheel 22 to rotate, turning on the third microswitch 43. The arm wheel 22 presses the rotating arm 23 downward, turning on the fourth microswitch 44. The rotating arm 23 drives the door hook assembly 1 to move upward, that is, the first door hook 11 is lifted upward to turn on the first microswitch 41, and the second door hook 12 is lifted upward to turn on the second microswitch 42, so that the microwave oven door opens;

[0043] When the door is fully opened, the motor 21 is still driving the arm wheel 22 to rotate. When the arm wheel 22 rotates to a certain angle, the third microswitch 43 is closed, the rotating arm 23 bounces upward, and the fourth microswitch 44 is closed. The rotating arm 23 drives the door hook assembly 1 to move downward, that is, the first door hook 11 moves downward to close the first microswitch 41, and the second door hook 12 moves downward to close the second microswitch 42, so that the microwave oven door is closed.

[0044] A microwave oven having an electric door opening device integrally embedded therein. 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 small-liter microwave oven, and the capacity of the microwave oven is in the range of 17L-20L.

[0045] In the present invention, any microwave oven can include an electric door opening device structure as described in this embodiment, and based on the relevant structure and assembly relationship of the switch component 4 and the rotating arm wheel 22 provided in this embodiment, the microwave oven also includes conventional components including a door body, an outer shell, a furnace cavity and other structures. Since they are all existing technologies, they will not be described in detail here.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An electric door opening device, characterized in that: The microwave oven comprises a door hook assembly (1), an electric ejection assembly (2), a support (3) and a switch assembly (4); the electric ejection assembly (2) and the switch assembly (4) are both arranged on the support (3); one end of the support (3) away from the electric ejection assembly (2) is connected to the main body of the microwave oven; one end of the door hook assembly (1) is connected to the door body of the microwave oven; the other end of the door hook assembly (1) is in contact with or separated from the electric ejection assembly (2) in a manner capable of sliding up and down; at least one switch assembly (4) is provided, and the switch assembly (4) is in contact with or separated from the door hook assembly (1) and the electric ejection assembly (2) respectively.

2. An electric door opening device according to claim 1, characterized in that: The electric ejection assembly (2) comprises a motor (21), a rotating arm wheel (22) and a rotating arm (23); the output shaft of the motor (21) is connected to the support (3) via the rotating arm wheel (22); the rotating arm (23) is connected to the support (3) in a rotatable manner; the outer wall of the rotating arm wheel (22) abuts against or separates from one end of the rotating arm (23); the other end of the rotating arm (23) is connected to the door hook assembly (1).

3. The electric door opening device according to claim 2, characterized in that: The rotating arm wheel (22) includes a central hole (221), and the inner side wall of the central hole (221) is in contact with or separated from the outer side wall of the output shaft of the motor (21).

4. The electric door opening device according to claim 3, characterized in that: The rotating arm wheel (22) further comprises a support arm (222) and a reinforcing rib (223), wherein the support arm (222) is connected to the central hole (221) via the reinforcing rib (223).

5. The electric door opening device according to claim 4, characterized in that: The number of the supporting arms (222) and the reinforcing ribs (223) is n, where n is a positive integer.

6. The electric door opening device according to claim 2, characterized in that: The swivel arm (23) comprises a first swivel arm (231) and a second swivel arm (232); the first swivel arm (231) is connected to the second swivel arm (232); the top of the first swivel arm (231) is connected to the door hook assembly (1); the second swivel arm (232) abuts against or separates from the outer ring of the swivel arm wheel (22); and the second swivel arm (232) is rotatably arranged on the support (3).

7. The electric door opening device according to claim 6, characterized in that: The height L1 of the first rotating arm (231) is greater than the height L2 of the second rotating arm (232).

8. The electric door opening device according to claim 1, characterized in that: The door hook assembly (1) comprises a first door hook (11), a second door hook (12) and a connecting piece (13); the first door hook (11), the second door hook (12) and the connecting piece (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 connecting piece (13), and the other end of the first door hook (11) and the other end of the second door hook (12) are both connected to the corresponding limiting holes on the support (3) in a manner that allows them to move up and down.

9. The electric door opening device according to claim 1, characterized in that: The switch assembly (4) comprises a first micro switch (41), a second micro switch (42), a third micro switch (43), and a fourth micro switch (44); the first micro switch (41), the second micro switch (42), the third micro switch (43), and the fourth micro switch (44) are all arranged on the support (3); the first micro switch (41) abuts against or separates from the first door hook (11); the second micro switch (42) abuts against or separates from the second door hook (12); the third micro switch (43) abuts against or separates from the rotating arm wheel (22); and the fourth micro switch (44) abuts against or separates from the rotating arm (23).

10. A microwave oven, characterized in that: The microwave oven comprises an electric door opening device according to any one of claims 1 to 9, and the electric door opening device is arranged in the microwave oven.

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