Power line grounding structure and microwave oven

Abstract

The utility model provides a power line grounding structure and a microwave oven. The power line grounding structure comprises a plastic bracket with a fan, a filter plate, a metal connecting sheet, a shell and a power line, the plastic support with the fan is fixed to the back face of the shell, the metal connecting piece is assembled on the plastic support with the fan, and the filter plate is fixed to the plastic support with the fan and tightly presses the metal connecting piece. The power line is provided with a power source grounding wire terminal, the plastic support with the fan is provided with a fixing position, the filtering plate is provided with a filtering grounding end, and the power source grounding wire terminal and the filtering plate are fixed to the fixing position through a first screw so that the filtering grounding end, the metal connecting piece and the power line grounding wire terminal can make close contact. According to the utility model, only the metal connecting sheet needs to be added for connection, redundant operation is not needed, the operation of fixing the grounding wire of the traditional filter plate and the metal shell of the microwave oven in the production process is omitted, the filter plate and the power line are grounded only by one screw, the production efficiency is high, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of microwave ovens, in particular to a power line grounding structure and a microwave oven. Background Art

[0002] At present, the grounding method of microwave ovens is mainly based on grounding wires. One end of the grounding wire is connected to the grounding end of the filter board by wave soldering, and the other end is fixed to the metal shell by screws. The grounding wire of this structure is easily disconnected from the metal shell and the grounding end of the circuit board by external forces, affecting the normal operation of the equipment and causing damage to the circuit board; it has a great impact on the electromagnetic compatibility of the whole machine, has certain safety hazards, and the production operation requires multiple processes to complete, resulting in low production efficiency. Utility Model Content

[0003] The utility model provides a power line grounding structure, aiming to solve the problems of poor safety and low production efficiency of the existing power line grounding structure.

[0004] In a first aspect, an embodiment of the utility model provides a power line grounding structure, comprising: a plastic bracket with a fan, a filter plate, a metal connecting sheet, a housing, and a power line;

[0005] The plastic bracket with fan is fixed on the back side of the housing, the metal connecting piece is assembled on the plastic bracket with fan, and the filter plate is fixed on the plastic bracket with fan and presses the metal connecting piece;

[0006] The power cord is provided with a power grounding terminal, the fan plastic bracket is provided with a fixing position, the filter board is provided with a filter grounding terminal, and the power grounding terminal is fixed to the filter board at the fixing position by a first screw to achieve close contact between the filter grounding terminal, the metal connecting plate and the power cord grounding terminal.

[0007] Preferably, the fan-carrying plastic bracket is further provided with a first bracket fixing hole, the outer shell is provided with a first outer shell fixing hole, and the first bracket fixing hole is fixedly connected with the first outer shell fixing hole by a second screw.

[0008] Preferably, the fan-carrying plastic bracket is further provided with a second bracket fixing hole, and the shell is further provided with a second shell fixing hole;

[0009] The metal connecting piece comprises a connecting piece body, a fixing hole end formed by bending and extending one end of the connecting piece body close to the shell, and a fixing end formed by bending one end of the connecting piece body away from the shell;

[0010] A grounding hole is also provided on the filter plate, and the fixed end corresponds to the grounding hole; the connecting piece body is arranged between the plastic bracket with fan and the filter plate; the fixing hole end is sleeved on the fixing hole of the second bracket, and the fixing hole end, the fixing hole of the second bracket and the fixing hole of the second shell are fixedly connected by a third screw.

[0011] Preferably, the connecting piece body and the fixing end are arranged in parallel, and the connecting piece body and the fixing hole end are arranged perpendicularly.

[0012] Preferably, a square groove is provided on the filter plate, a buckle position is provided on the plastic bracket with a fan, and the square groove is correspondingly arranged on the buckle position.

[0013] Preferably, the plastic bracket with fan is a plastic part.

[0014] Preferably, the housing is a rectangular structure.

[0015] Preferably, a plurality of through holes are arranged in an array on the housing, and the plastic bracket with a fan is correspondingly arranged on one side of the through holes.

[0016] In a second aspect, the utility model provides a microwave oven, comprising the above-mentioned power line grounding structure.

[0017] Compared with the prior art, the beneficial effect of the utility model is that, by fixing the plastic bracket with a fan on the back of the shell, assembling the metal connecting piece on the plastic bracket with a fan, fixing the filter board on the plastic bracket with a fan and pressing the metal connecting piece; a power grounding terminal is provided on the power line, a fixing position is provided on the plastic bracket with a fan, a filter grounding terminal is provided on the filter board, and the power grounding terminal is fixed to the filter board at the fixing position by a first screw, so as to achieve close contact between the filter grounding terminal, the metal connecting piece and the power line grounding terminal. In this way, only the metal connecting piece needs to be added for connection, and no extra operation is required. In addition, the traditional operation of fixing the filter board grounding wire and the metal shell of the microwave oven in the production process is removed. The filter board and the power line grounding only need one screw to be fixed, which has high production efficiency and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is described in detail below in conjunction with the accompanying drawings. The above and other aspects of the utility model will become clearer and easier to understand through the detailed description made in conjunction with the following drawings. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of a power line grounding structure provided by an embodiment of the utility model;

[0020] Figure 2 It is a rear view of the power line grounding structure provided by an embodiment of the utility model;

[0021] Figure 3 It is an exploded view of the power line grounding structure provided by the embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a plastic bracket with a fan provided in an embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of the structure of the metal connecting piece provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0025] Combined with Figure 1-Figure 5 As shown, an embodiment of the utility model provides a power cord grounding structure, including: a plastic bracket with a fan 1, a filter plate 2, a metal connecting plate 3, a shell 4 and a power cord 5; the shell 4 is used to install and fix the plastic bracket with a fan 1, and the filter plate 2 and the metal connecting plate 3 are connected through the plastic bracket with a fan 1.

[0026] The plastic bracket with fan 1 is fixed to the back side of the housing 4 , the metal connecting piece 3 is assembled on the plastic bracket with fan 1 , and the filter plate 2 is fixed to the plastic bracket with fan 1 and presses the metal connecting piece 3 .

[0027] The power cord 5 is provided with a power grounding terminal 5-1, the fan-carrying plastic bracket 1 is provided with a fixing position 1-4, the filter board 2 is provided with a filter grounding terminal 2-3, and the power grounding terminal 5-1 is fixed to the fixing position 1-4 with the filter board 2 by a first screw 6-3, so as to achieve close contact between the filter grounding terminal 2-3, the metal connecting piece 3 and the grounding terminal of the power cord 5. In this way, only the metal connecting piece 3 needs to be added for connection, no extra operation is required, and the traditional fixing operation of the grounding wire of the filter board 2 and the metal shell 4 of the microwave oven in the production process is removed, and the grounding of the filter board 2 and the power cord 5 only needs one screw to be fixed, which has high production efficiency and simple operation.

[0028] In this embodiment, the fan plastic bracket 1 is further provided with a first bracket fixing hole 1-1, and the shell 4 is provided with a first shell fixing hole 4-1. The first bracket fixing hole 1-1 and the first shell fixing hole 4-1 are fixedly connected by a second screw 6-1.

[0029] In this embodiment, the plastic bracket 1 with fan is also provided with a second bracket fixing hole 1-2, and the shell 4 is also provided with a second shell fixing hole 4-2; the metal connecting plate 3 includes a connecting plate body 3-3, a fixing hole end 3-1 formed by bending and extending one end of the connecting plate body 3-3 close to the shell 4, and a fixing end 3-2 formed by bending one end of the connecting plate body 3-3 away from the shell 4; the filter plate 2 is also provided with a grounding terminal hole position 2-1, and the fixed end 3-2 corresponds to the grounding terminal hole position 2-1; the connecting plate body 3-3 is arranged between the plastic bracket 1 with fan and the filter plate 2; the fixing hole end 3-1 is sleeved on the second bracket fixing hole 1-2, and the fixing hole end 3-1, the second bracket fixing hole 1-2 and the second shell fixing hole 4-2 are fixedly connected by a third screw 6-2.

[0030] In this embodiment, the connecting piece body 3 - 3 and the fixing end 3 - 2 are arranged in parallel, and the connecting piece body 3 - 3 and the fixing hole end 3 - 1 are arranged vertically.

[0031] In this embodiment, the filter plate 2 is provided with a square groove 2-2, the plastic bracket with fan 1 is provided with a buckle position 1-3, and the square groove 2-2 is correspondingly arranged on the buckle position 1-3, so that the filter plate 2 and the plastic bracket with fan 1 are conveniently installed and fixed with good effect.

[0032] In this embodiment, the fan-carrying plastic bracket 1 is a plastic part, which is easy to install and saves costs.

[0033] In this embodiment, the housing 4 is a rectangular structure.

[0034] In this embodiment, the shell 4 is provided with a plurality of through holes 4-3 in an array, and the fan-carrying plastic bracket 1 is correspondingly arranged on one side of the through hole 4-3. The plurality of through holes 4-3 are used for ventilation and heat dissipation, thereby increasing the service life of the microwave oven.

[0035] The installation principle of the utility model is as follows;

[0036] First, assemble the metal connecting piece 3 onto the plastic bracket 1 with a fan, and fix the first shell fixing hole 4-1 of the metal shell 4 on the back of the microwave oven and the first bracket fixing hole 1-1 of the plastic bracket 1 with a fan by a second screw 6-1, and then fix the second shell fixing hole 4-2 of the metal shell 4 on the back of the microwave oven and the second bracket fixing hole 1-2 by a third screw 6-2, and fix the fixing hole end 3-1 of the metal connecting piece 3 between the second bracket fixing hole 1-2 and the second shell fixing hole 4-2 by a screw. Since the second bracket fixing hole 1-2 is a plastic part, there is no need to match the nut; the above realizes the basic fixation of the structure of the utility model.

[0037] The contact portion between the grounding end of the filter plate 2 and the fixed end 3 - 2 of the metal connecting plate 3 is designed to be tinned, and the tinning is achieved by wave soldering.

[0038] By assembling the filter board 2 onto the plastic bracket 1 with a fan, the grounding terminal hole 2-1 is aligned with the fixed end hole 3-2, and the square groove 2-2 of the filter board and the buckle position 1-3 of the plastic bracket 1 with a fan are fastened together through the buckle position, and finally the power cord grounding terminal 5-1 is fixed to the filter board 2 on the fixed position 1-4 through the first screw 6-3; the grounding terminal of the filter board and the metal connecting plate 3 and the power cord grounding terminal 5-1 are in close contact; thereby, the effective grounding of the entire structure is achieved through the metal contact plate 3 and the shell 4.

[0039] The utility model only needs to add a metal connecting piece for connection, no extra operation is required, and the traditional work of fixing the filter board grounding wire and the microwave oven metal shell in the production process is removed. The filter board and the power line grounding only need one screw to fix, the production efficiency is high, and the operation is simple.

[0040] The utility model also provides a microwave oven, which comprises the above-mentioned power line grounding structure, so that the filter plate and the power line grounding only need one screw to be fixed, the production efficiency is high, and the operation is simple.

[0041] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, article or device. In the absence of more restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, article or device including the element.

[0042] The embodiments of the present invention are described above in conjunction with the accompanying drawings. What is disclosed is only the preferred embodiments of the present invention. However, the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms of equivalent changes without departing from the scope of protection of the purpose of the present invention and the claims, which are all within the protection of the present invention.

Claims

1. A power line grounding structure, characterized in that: include: With fan plastic bracket, filter board, metal connector, housing and power cord; The plastic bracket with fan is fixed on the back side of the housing, the metal connecting piece is assembled on the plastic bracket with fan, and the filter plate is fixed on the plastic bracket with fan and presses the metal connecting piece; The power cord is provided with a power grounding terminal, the fan plastic bracket is provided with a fixing position, the filter board is provided with a filter grounding terminal, and the power grounding terminal is fixed to the filter board at the fixing position by a first screw to achieve close contact between the filter grounding terminal, the metal connecting plate and the power cord grounding terminal.

2. The power line grounding structure according to claim 1, characterized in that: The fan-carrying plastic bracket is also provided with a first bracket fixing hole, the shell is provided with a first shell fixing hole, and the first bracket fixing hole is fixedly connected with the first shell fixing hole by a second screw.

3. The power line grounding structure according to claim 1, characterized in that: The fan-carrying plastic bracket is also provided with a second bracket fixing hole, and the shell is also provided with a second shell fixing hole; The metal connecting piece comprises a connecting piece body, a fixing hole end formed by bending and extending one end of the connecting piece body close to the shell, and a fixing end formed by bending one end of the connecting piece body away from the shell; A grounding hole is also provided on the filter plate, and the fixed end corresponds to the grounding hole; the connecting piece body is arranged between the plastic bracket with fan and the filter plate; the fixing hole end is sleeved on the fixing hole of the second bracket, and the fixing hole end, the fixing hole of the second bracket and the fixing hole of the second shell are fixedly connected by a third screw.

4. The power line grounding structure according to claim 3, characterized in that: The connecting piece body is arranged in parallel with the fixing end, and the connecting piece body is arranged in perpendicular to the fixing hole end.

5. The power line grounding structure according to claim 1, wherein: The filter plate is provided with a square groove, the plastic bracket with a fan is provided with a buckle position, and the square groove is correspondingly arranged on the buckle position.

6. The power line grounding structure according to claim 1, wherein: The plastic bracket with fan is a plastic part.

7. The power line grounding structure according to claim 1, characterized in that: The shell is a rectangular structure.

8. The power line grounding structure according to claim 1, wherein: The shell is provided with a plurality of through holes in an array, and the plastic bracket with a fan is correspondingly arranged on one side of the through holes.

9. A microwave oven, characterized in that: The microwave oven comprises the power cord grounding structure according to any one of claims 1 to 8.

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