Microwave oven

Abstract

The utility model discloses a microwave oven which comprises a fan bracket and a filter plate assembly, a first bracket and a second bracket are arranged on the top wall of the fan bracket, the first bracket and the second bracket are arranged at an interval and form a clamping position, and the filter plate assembly is clamped in the clamping position. According to the microwave oven disclosed by the utility model, the first bracket and the second bracket are arranged on the top wall of the fan bracket, the clamping position is formed between the first bracket and the second bracket, and the filter plate assembly is clamped into the clamping position so as to be fixed on the fan bracket, so that the filter plate assembly does not need to be mounted by adopting screws; the assembly is more convenient, consumables are less, the assembly efficiency is high, the production efficiency can be improved, and electronic devices on the filter plate assembly can be prevented from being damaged by screws.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a microwave oven. Background Art

[0002] A microwave oven, as the name implies, uses microwaves to cook food. A microwave oven is a modern cooking appliance that uses microwaves to heat food. Microwaves are a type of electromagnetic wave. A microwave oven consists of a power supply, a magnetron, a control circuit, a cooking cavity, etc. The power supply provides about 4000 volts of high voltage to the magnetron. The magnetron continuously generates microwaves under the excitation of the power supply, and then through the waveguide system, it is coupled into the cooking cavity. Near the inlet of the cooking cavity, there is a rotatable stirrer. Since the stirrer is fan-shaped metal, after rotating, it can reflect microwaves in all directions, so it can evenly distribute microwave energy in the cooking cavity. The power range of a microwave oven is generally 500 - 1000 watts, thus heating food.

[0003] A microwave filter is used to control the frequency response of a signal, enabling useful signal frequency components to pass through the filter with almost no attenuation, while blocking the transmission of useless signal frequency components. Microwave filters are divided into four types: low-pass, high-pass, band-pass, and band-stop (high-pass is usually replaced by a broadband band-pass filter). Their structures, parameters, and design methods vary significantly due to different indicators such as operating frequency, bandwidth, power capacity, etc. In a microwave circuit system, the performance of the filter has a great impact on the performance indicators of the circuit. Therefore, how to design a high-performance filter is of great significance for designing a microwave circuit system. Microstrip circuits have many advantages such as small volume, light weight, wide frequency band, etc., and have been widely used in microwave circuit systems in recent years. Using microstrip to make filters is one of its main applications.

[0004] Current microwave oven products all have a filter board assembly. Generally, the filter board assembly is fixed to the upper part of the fan bracket by screws. This fixing method using screws has the following disadvantages: the manual time consumed for screwing is relatively long, there are many assembly processes, the labor cost is high, the production efficiency is low, and the screws are also likely to damage the electronic components on the filter board. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a microwave oven to solve the technical problems in the prior art that the filter board assembly needs to be installed by screws, which consumes a relatively long time for screwing, has many assembly processes, high labor cost, low production efficiency, and the screws are also likely to damage the electronic components on the filter board.

[0006] The present utility model provides a microwave oven, which includes a fan bracket and a filter board assembly. A first bracket and a second bracket are provided on the top wall of the fan bracket. The first bracket and the second bracket are spaced apart and form a clamping position, and the filter board assembly is snap-fitted into the clamping position.

[0007] For the microwave oven as described above, the first bracket includes a first support plate and a first convex block, and the second bracket includes a second support plate and a second convex block. The first convex block is provided on a side wall of the first support plate close to the second support plate, and the second convex block is provided on a side wall of the second support plate close to the first support plate. A first groove is formed on the first convex block, and a second groove is formed on the second convex block. The notch of the first groove and the notch of the second groove are arranged opposite to each other, and the clamping position is formed between the first groove and the second groove.

[0008] For the microwave oven as described above, the first groove penetrates through the front side wall of the first convex block to form a first opening, and the second groove penetrates through the front side wall of the second convex block to form a second opening. Two sides of the filter board assembly respectively pass through the first opening and the second opening and extend into the first groove and the second groove.

[0009] For the microwave oven as described above, a first guiding groove is formed on the groove wall of the first opening, and a second guiding groove is formed on the groove wall of the first opening. The first guiding groove and the second guiding groove are respectively used for guiding the filter board assembly to be inserted into the first groove and the second groove.

[0010] For the microwave oven as described above, an elastic tongue is provided on the top wall of the fan bracket. The tongue is located within the clamping position. A first through hole is provided on the filter board assembly, and the tongue extends out from the first through hole to limit the position of the filter board assembly.

[0011] For the microwave oven as described above, a part of the side wall of the tongue is cut off to form an elastic deformation part.

[0012] For the microwave oven as described above, the top wall of the tongue is higher than the top walls of the first groove and the second groove.

[0013] For the microwave oven as described above, a clamping groove is provided on the side wall of the tongue, and the hole wall of the first through hole is snap-fitted into the clamping groove.

[0014] For the microwave oven as described above, the microwave oven includes a fan motor and a fan blade. The fan motor is arranged on the fan bracket. A second through hole is provided on the fan bracket. An output rotating shaft is provided on the fan motor, and the output rotating shaft penetrates through the second through hole and is connected to the fan blade.

[0015] The microwave oven as described above further includes a fastener. A first mounting hole is provided at the lower end of the fan bracket, and a second mounting hole is provided on the fan motor. The fastener sequentially passes through the first mounting hole and the second mounting hole to fix the fan motor to the fan bracket.

[0016] Implementing the embodiments of the present invention will have the following beneficial effects:

[0017] In the present invention, the microwave oven includes a fan bracket and a filter board assembly. A first bracket and a second bracket are provided on the top wall of the fan bracket. The first bracket and the second bracket are spaced apart and form a clamping position, and the filter board assembly is snap-fitted into the clamping position. By providing the first bracket and the second bracket on the top wall of the fan bracket, and forming a clamping position between the first bracket and the second bracket, the filter board assembly is snapped into the clamping position to fix the filter board assembly to the fan bracket, without using screws to install the filter board assembly, which is more convenient for assembly, consumes less materials, has a high assembly efficiency, is beneficial to improving production efficiency, and can avoid damage to the electronic devices on the filter board assembly by screws. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 is a schematic structural diagram of a partial structure of a microwave oven shown according to an exemplary embodiment;

[0020] Figure 2 is an exploded view of a partial structure of a microwave oven shown according to an exemplary embodiment;

[0021] Figure 3 is a schematic structural diagram of a fan bracket shown according to an exemplary embodiment;

[0022] Figure 4 is an exploded view of a microwave oven shown according to an exemplary embodiment.

[0023] Wherein: 1. Fan bracket; 11. First bracket; 111. First convex block; 112. First groove; 12. Second bracket; 121. Second convex block; 122. Second groove; 13. Tongue; 131. Elastic deformation part; 2. Filter board assembly; 21. First through hole; 3. Fan motor; 4. Fan blade. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 thus cannot be understood as a limitation to the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0027] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0029] See Figures 1-4, the present utility model provides a microwave oven, which includes a fan bracket 1 and a filter board assembly 2. On the top wall of the fan bracket 1, there are provided a first bracket 11 and a second bracket 12. The first bracket 11 and the second bracket 12 are spaced apart and form a clamping position, and the filter board assembly 2 is snap-fitted into the clamping position. By providing the first bracket 11 and the second bracket 12 on the top wall of the fan bracket 1, and a clamping position is formed between the first bracket 11 and the second bracket 12, the filter board assembly 2 is snapped into the clamping position to fix the filter board assembly 2 to the fan bracket 1. There is no need to use screws to install the filter board assembly 2, which is more convenient for assembly, consumes less materials, and has high assembly efficiency, which is beneficial to improving production efficiency. At the same time, it can avoid damage to the electronic components on the filter board assembly 2 by screws.

[0030] Specifically, the first bracket 11, the second bracket 12, and the fan bracket 1 are of an integrally formed structure, and there is no need to assemble the first bracket 11 and the second bracket 12, which saves labor costs and simplifies the production process.

[0031] Specifically, the filter board assembly 2 includes a PCB board and electronic components provided on the PCB board. The left and right sides of the PCB board are snap-fitted into the clamping position to fix the PCB board, which facilitates the installation and disassembly of the filter board assembly 2.

[0032] Further, the first bracket 11 includes a first support plate and a first convex block 111, the second bracket 12 includes a second support plate and a second convex block 121. The first convex block 111 is provided on a side wall of the first support plate close to the second support plate, the second convex block 121 is provided on a side wall of the second support plate close to the first support plate. A first groove 112 is formed on the first convex block 111, a second groove 122 is formed on the second convex block 121. The notch of the first groove 112 and the notch of the second groove 122 are arranged opposite to each other, and the clamping position is formed between the first groove 112 and the second groove 122.

[0033] Further, the first groove 112 penetrates through the front side wall of the first convex block 111 to form a first opening, the second groove 122 penetrates through the front side wall of the second convex block 121 to form a second opening. The two sides of the filter board assembly 2 respectively pass through the first opening and the second opening and extend into the first groove 112 and the second groove 122. Specifically, the two sides of the filter board assembly 2 respectively pass through the first opening and the second opening to insert into the first groove 112 and the second groove 122, and then move backward along the first groove 112 and the second groove 122 until they abut against the rear end walls of the first groove 112 and the second groove 122 to complete the snap-fitting of the filter board assembly 2 and realize the fixation of the filter board assembly 2.

[0034] Specifically, the first bump 111 and the second bump 121 are respectively arranged at the upper ends of the first bracket 11 and the second bracket 12, so that the bottom wall of the filter board assembly 2 does not directly abut against the bottom wall of the fan bracket 1, which facilitates the insertion and extraction of the electronic devices on the PCB board; a support block extending upward is provided on the top wall of the fan bracket 1, and the top wall of the support block abuts against the bottom wall of the filter board assembly 2. The support block can provide support for the filter board assembly 2 without affecting the insertion and extraction of the electronic devices.

[0035] Further, a first guiding groove is formed on the groove wall of the first opening, and a second guiding groove is formed on the groove wall of the first opening. The first guiding groove and the second guiding groove are respectively used to guide the filter board assembly 2 to be inserted into the first groove 112 and the second groove 122. Both the first guiding groove and the second guiding groove are open grooves, which facilitates the filter board assembly 2 to locate the positions of the first groove 112 and the second groove 122 so as to be inserted into the first groove 112 and the second groove 122.

[0036] Further, a clamping tongue 13 extending upward is provided on the top wall of the fan bracket 1. The clamping tongue 13 is elastic and is located within the clamping position. A first through hole 21 is provided on the filter board assembly 2, and the clamping tongue 13 extends out from the first through hole 21 to limit the position of the filter board assembly 2. By the clamping tongue 13 passing through the first through hole 21, the movement of the filter board assembly 2 is restricted, further strengthening the fixing effect of the filter board assembly 2. When the terminals on the filter board assembly 2 are inserted and extracted, it is ensured that the filter board assembly 2 does not displace.

[0037] Specifically, the clamping tongue 13 is made of a plastic material, such as ABS or PP, etc. The clamping tongue 13 can undergo plastic deformation. When the filter board assembly 2 is not installed in place, the bottom wall of the filter board assembly 2 presses against the clamping tongue 13, causing the clamping tongue 13 to deform and compress. At this time, the first through hole 21 and the clamping tongue 13 are on the same straight line, and this straight line is arranged along the moving direction of the filter board assembly 2; until the filter board assembly 2 is installed in place, the first through hole 21 corresponds to the clamping tongue 13, and the clamping tongue 13 loses the extrusion force of the bottom wall of the filter board assembly 2, and the clamping tongue 13 elastically returns to its original state and extends out from the first through hole 21.

[0038] Specifically, the clamping tongue 13 is arranged at the middle position of the clamping position, so that the force on the filter board assembly 2 is more uniform, which is beneficial to the stability of the structure.

[0039] Further, a part of the side wall of the tongue 13 is shaved off to form an elastic deformation part 131, which can reduce the cross-sectional area of the elastic deformation part 131, enabling the elastic deformation part 131 to have better deformation performance and be able to quickly rebound. When disassembly and repair are required, the tongue 13 is pressed, and plastic deformation occurs due to the material characteristics of the tongue 13 to disengage from the first through hole 21, so that the filter board assembly 2 can be disassembled.

[0040] Further, the top wall of the tongue 13 is higher than the top walls of the first groove 112 and the second groove 122, so that the tongue 13 can extend to the surface of the filter board assembly 2.

[0041] Further, the microwave oven includes a fan motor 3 and a fan blade 4. The fan motor 3 is arranged on the fan support 1. The fan support 1 is provided with a second through hole. The fan motor 3 is provided with an output rotating shaft, and the output rotating shaft passes through the second through hole and is connected to the fan blade 4. The fan motor 3 and the fan blade 4 are respectively arranged on both sides of the fan support 1, and the fan motor 3 drives the fan blade 4 to rotate.

[0042] Further, the lower end of the fan support 1 is provided with a first mounting hole, and the fan motor 3 is provided with a second mounting hole. The fastener sequentially passes through the first mounting hole and the second mounting hole to fix the fan motor 3 to the fan support 1. The fan motor 3 is fixed to the fan support 1 by the fastener, and the fastener can be a screw or a bolt.

[0043] In another embodiment, a clamping groove is provided on the side wall of the tongue 13, and the hole wall of the first through hole 21 is clamped in the clamping groove. After the tongue 13 passes through the first through hole 21, the hole wall of the first through hole 21 is clamped in the clamping groove, which can prevent the tongue 13 from disengaging from the first through hole 21 and ensure that the filter board assembly 2 does not displace.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the invention.

Claims

1. A microwave oven, characterized in that: The invention comprises a fan support (1) and a filter plate assembly (2), wherein a first support (11) and a second support (12) are arranged on the top wall of the fan support (1), the first support (11) and the second support (12) are arranged at an interval and form a clamping position, and the filter plate assembly (2) is clamped in the clamping position.

2. The microwave oven according to claim 1, characterized in that The first bracket (11) comprises a first support plate and a first protrusion (111), and the second bracket (12) comprises a second support plate and a second protrusion (121), the first protrusion (111) being arranged on a side wall of the first support plate close to the second support plate, and the second protrusion (121) being arranged on a side wall of the second support plate close to the first support plate, the first protrusion (111) being provided with a first groove (112), and the second protrusion (121) being provided with a second groove (122), the notch of the first groove (112) being arranged opposite to the notch of the second groove (122), and the clamping position being formed between the first groove (112) and the second groove (122).

3. The microwave oven according to claim 2, characterized in that: The first groove (112) penetrates the front side wall of the first protrusion (111) to form a first opening, the second groove (122) penetrates the front side wall of the second protrusion (121) to form a second opening, and two sides of the filter plate assembly (2) respectively pass through the first opening and the second opening to extend into the first groove (112) and the second groove (122).

4. The microwave oven according to claim 3, characterized in that: A first guide groove is provided on the groove wall of the first opening, and a second guide groove is provided on the groove wall of the first opening. The first guide groove and the second guide groove are used to guide the filter plate assembly (2) to be inserted into the first groove (112) and the second groove (122), respectively.

5. The microwave oven according to claim 3, characterized in that: An elastic latch (13) is provided on the top wall of the fan bracket (1), and the latch (13) is located in the clamping position. A first through hole (21) is provided on the filter plate assembly (2), and the latch (13) extends from the first through hole (21) to limit the position of the filter plate assembly (2).

6. The microwave oven according to claim 5, characterized in that A portion of the side wall of the latch tongue (13) is cut away to form an elastic deformation portion (131).

7. The microwave oven according to claim 6, characterized in that The top wall of the latch tongue (13) is higher than the top wall of the first groove (112) and the top wall of the second groove (122).

8. The microwave oven according to claim 5, characterized in that: A slot is provided on the side wall of the latch tongue (13), and the hole wall of the first through hole (21) is latched in the slot.

9. The microwave oven according to claim 1, characterized in that: The microwave oven comprises a fan motor (3) and a fan blade (4); the fan motor (3) is arranged on the fan bracket (1); the fan bracket (1) is provided with a second through hole; the fan motor (3) is provided with an output shaft; the output shaft passes through the second through hole and is connected to the fan blade (4).

10. The microwave oven according to claim 9, characterized in that The microwave oven further comprises a fastener, a first mounting hole is provided at the lower end of the fan bracket (1), a second mounting hole is provided on the fan motor (3), and the fastener passes through the first mounting hole and the second mounting hole in sequence to fix the fan motor (3) to the fan bracket (1).

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