Electric appliance box and air conditioner

Abstract

The utility model provides an electric appliance box and an air conditioner, the electric appliance box comprises a PCB and a wire-passing frame, the wire-passing frame is provided with at least two installation positions, and a main body structure of the wire-passing frame between two adjacent installation positions is spaced from the PCB by a certain distance. At least two wire passing structures are arranged on the side, away from the PCB, of the wire passing frame, the first wire passing structure can position and guide a first wire electrically connected with the PCB, and the second wire passing structure can position and guide a second wire electrically connected with the PCB. According to the utility model, the power line can be separated from other high-frequency signal lines (inductance lines and motor lines), the condition of unqualified EMC conduction is avoided, the separation of the power line and the signal lines can be ensured, the safety problem caused by collision between the passing line and components on the PCB can be prevented, and the disassembly and assembly efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an electrical appliance box and an air conditioner. Background Art

[0002] At present, in the field of air conditioning, the electrical box is an important component inside the air conditioner, and is generally fixed on the air conditioner in the form of a group or component. Since the electrical box components involve the main board, wiring, etc., the assembly method, electrical safety, EMC, etc. of the electrical box components are extremely strict. Since the power line, DC motor line, inductor line, etc. are high-frequency signal lines, when the distance is close, the high-frequency signal coupling will cause EMC conduction failure, which will interfere with the terminal voltage. In severe cases, it will affect home appliances other than air conditioning products (such as interfering with televisions, lights, etc., causing abnormal operation). In addition, the over-line is prone to collide with components on the PCB board, and excessively high temperature will cause the over-line insulation glue to melt, resulting in safety problems. In response to the above requirements, the utility model newly designs a variable frequency electrical box to solve the above problems through structural design and reasonable layout of wiring.

[0003] Since the air conditioner electrical box in the prior art has power lines, DC motor lines, inductor lines and other high-frequency signal lines that are set at a close distance, high-frequency signal coupling will occur, resulting in EMC conduction failure and interference with terminal voltage; the over-the-wires are also prone to collision with components on the PCB board, causing safety problems and other technical problems. Therefore, the utility model studies and designs an electrical box and an air conditioner. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defects in the prior art that the air-conditioning electrical box cannot simultaneously solve the high-frequency signal coupling generated by multiple high-frequency signal lines, and the over-the-wires are easily collided with components on the PCB board, causing safety problems, thereby providing an electrical box and an air conditioner.

[0005] In order to solve the above problems, the utility model provides an electrical appliance box, which includes:

[0006] A PCB board and a wire-passing rack, wherein the wire-passing rack has at least two installation positions, and a main structure of the wire-passing rack located between two adjacent installation positions is spaced a certain distance from the PCB board; at least two wire-passing structures are arranged on the wire-passing rack on a side away from the PCB board, including a first wire-passing structure and a second wire-passing structure, wherein the first wire-passing structure can position and guide a first wire electrically connected to the PCB board, and the second wire-passing structure can position and guide a second wire electrically connected to the PCB board.

[0007] In some embodiments,

[0008] The wire-passing rack includes a first wire-passing plate and a second wire-passing plate. A first side plate and a second side plate protruding from the first wire-passing plate are arranged on a side surface of the first wire-passing plate away from the PCB board. The first side plate and the second side plate are spaced apart and arranged opposite to each other. A wire-passing groove is formed between the first side plate, the second side plate and the first wire-passing plate. The first wire-passing structure includes the wire-passing groove; one end of the second wire-passing plate is connected to the first wire-passing plate, and the other end extends in a direction away from the first wire-passing plate. A second snap-in structure is arranged on the second wire-passing plate to form the second wire-passing structure.

[0009] In some embodiments,

[0010] The first side plate is further provided with a first buckle protruding toward the second side plate, the second side plate is further provided with a second buckle protruding toward the first side plate, and the first wire-passing structure includes the first buckle and the second buckle; and / or,

[0011] A third buckle is formed at one end of the first wire passing plate, a fourth buckle is formed at the other end of the first wire passing plate, and a fifth buckle is formed at one end of the second wire passing plate away from the first wire passing plate, the third buckle is the first installation position, the fourth buckle is the second installation position, and the fifth buckle is the third installation position; the minimum distance between the first wire passing plate and the PCB board is formed as a structure that first increases and then decreases from the direction of the third buckle to the fourth buckle, and the minimum distance between the second wire passing plate and the PCB board is formed as an increasing structure from the direction of the fifth buckle to the first wire passing plate, so that a hollow spacing space is formed between the wire passing frame and the PCB board along the height direction.

[0012] In some embodiments,

[0013] It also includes an electrical box base, an electrical box shielding box body and an electrical box shielding box cover. The electrical box shielding box body and the electrical box shielding box cover are connected to form a storage space therebetween. The PCB board and the wire rack are arranged in the storage space. The electrical box base is arranged between the PCB board and the electrical box shielding box body. The PCB board is supported and connected to the electrical box shielding box body through the electrical box base.

[0014] In some embodiments,

[0015] The electrical box base includes a PCB board support platform, a fixing buckle and an elastic buckle. The PCB board is arranged on the PCB board support platform. The fixing buckle is arranged so that at least part of the structure of the PCB board is located between the fixing buckle and the PCB board support platform to limit the PCB board. The elastic buckle is used to elastically clamp the installation of the PCB board. At least part of the structure of the PCB board is located between the elastic buckle and the PCB board support platform.

[0016] In some embodiments,

[0017] The electrical box base includes a bottom plate, a third side plate, a fourth side plate, a fifth side plate and a sixth side plate, the PCB board support platform is an annular protruding step arranged on the bottom plate; at least one of the third side plate, the fourth side plate, the fifth side plate and the sixth side plate is provided with the fixing buckle and the elastic buckle; the third side plate is also provided with a first wire outlet and a second wire outlet, the first wire outlet and the second wire outlet are both notch structures arranged on the third side plate, the first wire passing structure and the first wire outlet can guide the first wire in turn, and the second wire passing structure and the second wire outlet can guide the second wire in turn.

[0018] In some embodiments,

[0019] When the wire-passing rack includes a first wire-passing plate and a second wire-passing plate, and a third buckle is formed at one end of the first wire-passing plate, a fourth buckle is formed at the other end of the first wire-passing plate, and a fifth buckle is formed at one end of the second wire-passing plate away from the first wire-passing plate: a first clamping hole is provided on the third side plate, a second clamping hole is provided on the fourth side plate, and a third clamping hole is provided on the fifth side plate, the first clamping hole is relatively clamped with the third clamping hole, the second clamping hole is relatively clamped with the fourth clamping hole, and the third clamping hole is relatively clamped with the fifth clamping hole;

[0020] The fourth side panel is also provided with a wire trough, a wire trough limiting buckle and a third wire outlet. The wire trough can lead out a third electric wire electrically connected to the PCB board, the wire trough limiting buckle can clamp and limit the third electric wire, and the third wire outlet leads out the third electric wire.

[0021] In some embodiments,

[0022] The first electric wire forms a first water return bend bent upward after extending out of the first wire outlet, and the second electric wire forms a second water return bend bent upward after extending out of the second wire outlet. A first wire fixing hook is further provided on the third side plate at the lower end of the first wire outlet, and the first wire fixing hook is connected to the bottom of the first water return bend. A second wire fixing hook is further provided on the third side plate at the lower end of the second wire outlet, and the second wire fixing hook is connected to the bottom of the second water return bend.

[0023] In some embodiments,

[0024] The third side plate is provided with first guide ribs on both sides connected to the third buckle, and the fourth side plate is provided with second guide ribs on both sides connected to the fourth buckle.

[0025] A first sealing member is provided at a gap formed between the first wire outlet and the first wire, and a second sealing member is provided at a gap formed between the second wire outlet and the second wire.

[0026] The utility model also provides an air conditioner, which comprises the above-mentioned electrical appliance box.

[0027] The utility model provides an electrical box and an air conditioner with the following beneficial effects:

[0028] 1. The utility model sets a structural form of a wire-passing rack, and a main structure of the wire-passing rack located between two installation positions is spaced a certain distance from the PCB board, and at least two wire-passing structures are set on the side of the wire-passing rack away from the PCB board, including a first and a second wire-passing structure, which respectively position and guide the first wire and the second wire, so as to prop up or erect the line, avoid collision between the wire and components on the PCB board, ensure safety requirements, avoid safety problems caused by melting of the wire insulation glue due to excessive temperature, and at the same time, through the first and second wire-passing structures set separately, the power line and other high-frequency signal lines (inductor line, motor line) can be separated to avoid EMC conduction failure, which can not only ensure the separation of the power line and the signal line, but also prevent safety problems caused by collision between the wire and components on the PCB board, and the detachable structure can improve the disassembly and assembly efficiency.

[0029] 2. The utility model also realizes effective support for the PCB board by setting the structure of the electrical box base, so that the PCB board (main board) is connected to the electrical box shielding box body through the electrical box base, avoiding the risk of short circuit caused by the main board structure directly connecting with the shielding box. The setting of the electrical box base can not only effectively support the PCB board (especially for relatively thick PCB boards), but also form an insulating seal for the PCB board to prevent short circuit and improve the safety performance of the electrical box. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional structural diagram of the electrical box and the outdoor unit assembly of the utility model;

[0031] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the electrical box;

[0032] Figure 3 This is the overall structural diagram of the electrical box of the utility model;

[0033] Figure 4 It is an exploded structural diagram of the electrical appliance box of the utility model;

[0034] Figure 5 It is a structural schematic diagram of a wire passing rack of an electrical box of the utility model;

[0035] Figure 6 It is a structural schematic diagram of the electrical box base of the electrical box of the utility model;

[0036] Figure 7 It is a schematic diagram of the structure of the PCB board, the wire rack and the base of the electrical box of the utility model;

[0037] Figure 8 It is a partial cross-sectional structural diagram of the cooperation of a PCB board, a wire guide frame and a base of the electrical box of the utility model.

[0038] The reference numerals are:

[0039] 1. PCB board; 2. Wire rack; 3. First wire structure; 4. Second wire structure; 5. First wire; 6. Second wire; 7. First wire board; 8. Second wire board; 9. First side panel; 10. Second side panel; 11. Buckle structure; 12. First buckle; 13. Second buckle; 14. Third buckle; 15. Fourth buckle; 16. Fifth buckle; 17. Electrical box base; 18. Electrical box shielding box body; 19. Electrical box shielding box cover; 20. PCB board support platform; 21. Fixed buckle; 22. Elastic buckle; 23. Bottom plate; 24. The third side panel; 25. The fourth side panel; 26. The fifth side panel; 27. The sixth side panel; 28. The first wire outlet; 29. ​​The second wire outlet; 30. The first clamping hole; 31. The second clamping hole; 32. The third clamping hole; 33. The wire trough; 34. The wire trough limit buckle; 35. The third wire outlet; 36. The third wire; 37. The first water return bend; 38. The second water return bend; 39. The first wire fixing hook; 40. The second wire fixing hook; 41. The first guide rib; 42. The first sealing member; 43. The second sealing member; 100. The electrical box; 200. The outdoor unit assembly. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0041] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0043] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0045] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0046] like Figures 1 to 8 As shown, the utility model provides an electrical appliance box (preferably a vertical electrical appliance box), which includes:

[0047] A PCB board 1 and a wire-passing rack 2, wherein the wire-passing rack 2 has at least two installation positions, and a main structure of the wire-passing rack 2 located between two adjacent installation positions is spaced a certain distance from the PCB board 1, and at least two wire-passing structures are arranged on the wire-passing rack 2 on a side away from the PCB board 1, including a first wire-passing structure 3 and a second wire-passing structure 4, wherein the first wire-passing structure 3 can position and guide a first wire 5 electrically connected to the PCB board 1, and the second wire-passing structure 4 can position and guide a second wire 6 electrically connected to the PCB board 1.

[0048] The utility model sets a structural form of a wire-passing rack, and a main structure of the wire-passing rack located between two installation positions is spaced a certain distance from the PCB board, and at least two wire-passing structures are set on the side of the wire-passing rack away from the PCB board, including a first and a second wire-passing structure, which respectively position and guide the first electric wire and the second electric wire, so as to prop up or set up the line, avoid collision between the wire-passing and components on the PCB board, ensure safety requirements, avoid safety problems caused by melting of the wire-passing insulating glue due to excessive temperature, and at the same time, through the first and second wire-passing structures that are separately set, the power line and other high-frequency signal lines (inductor lines, motor lines) can be separated, and the situation of unqualified EMC conduction can be avoided. The separation of the power line and the signal line can be guaranteed, and safety problems caused by collision between the wire-passing and components on the PCB board can be prevented, and the detachable structure can improve the disassembly and assembly efficiency.

[0049] Since power lines, DC motor lines, inductor lines, etc. are high-frequency signal lines, when the distance is close, the coupling of high-frequency signals will cause EMC conduction failure, interfere with the terminal voltage, and seriously affect household appliances other than air-conditioning products (such as interfering with televisions, electric lights, etc., causing abnormal operation). Therefore, the utility model designs a wire rack to separate the power line from other high-frequency signal lines. The wire rack in the utility model has two wire-passing structures, and the power line, motor line, etc. are routed separately, so as to achieve the purpose of separating high-frequency signal lines such as power lines. The second wire-passing structure 4 includes an elastic buckle (buckle structure 11), which can be fastened by pressing it directly when passing the line. The first wire-passing structure 3 includes a wire groove (formed by the first side plate 9 and the second side plate 10 relative to each other), which can prevent the wire in the middle of the electrical box from moving around on the first wire-passing structure 3 and causing interference to other components.

[0050] The utility model can solve the following technical problems:

[0051] 1. Fewer components and higher assembly efficiency;

[0052] 2. Good waterproof effect and high reliability;

[0053] 3. Easy to maintain after sales;

[0054] 4. Solve the problem of EMC conduction high-frequency signal line interference failure.

[0055] The utility model has the following beneficial effects:

[0056] 1. Separate the power line from other high-frequency signal lines through structural design to avoid EMC conduction failure caused by high-frequency signal coupling;

[0057] 2. The PCB board is fixed by two methods: fixed buckles and elastic buckles, which improves assembly efficiency;

[0058] 3. The wire rack and the base of the electrical box are snap-fitted, and there are guide ribs to prevent assembly dislocation, thereby improving assembly efficiency.

[0059] In some embodiments,

[0060] The wire-passing rack 2 includes a first wire-passing plate 7 and a second wire-passing plate 8. A first side plate 9 and a second side plate 10 protruding from the first wire-passing plate 7 are arranged on a side surface of the first wire-passing plate 7 away from the PCB board 1. The first side plate 9 and the second side plate 10 are spaced apart and arranged opposite to each other. A wire-passing groove is formed between the first side plate 9, the second side plate 10 and the first wire-passing plate 7. The first wire-passing structure 3 includes the wire-passing groove; one end of the second wire-passing plate 8 is connected to the first wire-passing plate 7, and the other end extends in a direction away from the first wire-passing plate 7. A snap structure 11 is arranged on the second wire-passing plate 8 to form the second wire-passing structure 4.

[0061] This is the preferred structural form of the wire passing rack of the utility model, that is, a first wire passing structure can be formed by the first wire passing plate to accommodate the first wire passing therethrough, and the second wire passing plate can form a second wire passing structure to accommodate the second wire passing therethrough, and the first wire passing plate is also provided with a first and a second side plate relatively spaced apart, so as to form a wire passing groove structure capable of positioning and guiding the first wire, so as to improve the positioning effect of the first wire; a snap structure is provided on the second wire passing plate to form a second wire passing structure capable of passing the second wire, so as to improve the positioning and guiding effect of the second wire.

[0062] In some embodiments,

[0063] The first side plate 9 is further provided with a first buckle 12 protruding toward the second side plate 10, the second side plate 10 is further provided with a second buckle 13 protruding toward the first side plate 9, and the first wire passing structure 3 includes the first buckle 12 and the second buckle 13; and / or,

[0064] A third buckle 14 is formed at one end of the first wire-passing plate 7, a fourth buckle 15 is formed at the other end of the first wire-passing plate 7, and a fifth buckle 16 is formed at the end of the second wire-passing plate 8 away from the first wire-passing plate 7, the third buckle 14 is the first installation position, the fourth buckle 15 is the second installation position, and the fifth buckle 16 is the third installation position; the minimum distance between the first wire-passing plate 7 and the PCB board 1 is formed as a structure that first increases and then decreases from the direction of the third buckle 14 to the fourth buckle 15, and the minimum distance between the second wire-passing plate 8 and the PCB board 1 is formed as an increasing structure from the direction of the fifth buckle 16 to the first wire-passing plate 7, so that a hollow spacing space along the height direction is formed between the wire-passing frame 2 and the PCB board 1.

[0065] This is a further preferred structural form of the first wire passing structure of the wire passing rack of the utility model, and the first and second clips protruding relatively from the first and second side panels can further enhance the fixing and positioning effect of the first wire; the utility model can also be respectively clamped and fixed to the designated structure (the designated structure is preferably the base of the electrical box) through two clips (the third and fourth clips) formed at both ends of the first wire passing plate, forming two installation positions, and the minimum distance between the first wire passing plate and the PCB board presents a structure that increases and then decreases from one installation position to another, and the minimum distance between the second wire passing plate and the PCB board is formed as an increased structure from the third installation position to the direction of the first wire passing plate, which can make the middle part of the first wire passing plate be elevated to form a spacing space, thereby further avoiding the expansion of the wire due to contact with the PCB board, and further improving the safety performance.

[0066] In some embodiments,

[0067] The electronic box further comprises an electrical box base 17, an electrical box shielding box body 18 and an electrical box shielding box cover 19. The electrical box shielding box body 18 and the electrical box shielding box cover 19 are connected to form a storage space therebetween. The PCB board 1 and the wire rack 2 are arranged in the storage space. The electrical box base 17 is arranged between the PCB board 1 and the electrical box shielding box body 18. The PCB board 1 is supported and connected to the electrical box shielding box body 18 through the electrical box base 17.

[0068] The utility model also realizes effective support for the PCB board by setting the structure of the electrical box base, so that the PCB board (main board) is connected to the electrical box shielding box body through the electrical box base, and avoids the risk of short circuit caused by direct connection between the main board structure and the shielding box. The setting of the electrical box base can not only effectively support the PCB board (especially for relatively thick PCB boards), but also form an insulating seal for the PCB board to prevent short circuits and improve the safety performance of the electrical box.

[0069] In some embodiments,

[0070] The electrical box base 17 includes a PCB board support platform 20, a fixing buckle 21 and an elastic buckle 22. The PCB board 1 is arranged on the PCB board support platform 20. The fixing buckle 21 is arranged so that at least part of the structure of the PCB board 1 is located between the fixing buckle 21 and the PCB board support platform 20 to limit the PCB board 1. The elastic buckle 22 is used to elastically clamp the installation of the PCB board 1. At least part of the structure of the PCB board 1 is located between the elastic buckle 22 and the PCB board support platform 20.

[0071] This is the preferred structural form of the electrical box base of the utility model. The PCB board support platform can be used to support the PCB board, the fixing buckle is used to limit one side of the PCB board, and the elastic buckle can be used to elastically limit and clamp at least one side of the PCB board, thereby ensuring the stable installation of the PCB board, ensuring its working performance, and improving assembly efficiency.

[0072] In some embodiments,

[0073] The electrical box base 17 includes a bottom plate 23, a third side plate 24, a fourth side plate 25, a fifth side plate 26 and a sixth side plate 27, the PCB board support platform 20 is an annular protruding step arranged on the bottom plate 23; at least one of the third side plate 24, the fourth side plate 25, the fifth side plate 26 and the sixth side plate 27 is provided with the fixing buckle 21 and the elastic buckle 22; the third side plate 24 is also provided with a first wire outlet 28 and a second wire outlet 29, the first wire outlet 28 and the second wire outlet 29 are both notch structures arranged on the third side plate 24, the first wire passing structure 3 and the first wire outlet 28 can guide the first wire 5 in turn, and the second wire passing structure 4 and the second wire outlet 29 can guide the second wire 6 in turn.

[0074] This is the preferred structural form of the electrical box base of the utility model, in which a bottom supporting structure is formed by a bottom plate, and four side panels are respectively arranged on the four peripheries of the bottom plate and extend in the same direction (the bottom plate and four side panels of the electrical box base are preferably an integrally formed structure of sheet metal parts), and fixing buckles and elastic buckles can be provided on the inner side of the side panels to limit the PCB board, and two notch structures can be formed on the third side panel to form a first and a second wire outlet, so that the wires led out of the two wire passing structures of the wire passing rack are led out of the electrical box through the two wire outlets, further ensuring the separation of the power line and other high-frequency signal lines (inductor line, motor line), and further avoiding the situation of EMC conduction failure.

[0075] In some embodiments,

[0076] When the wire-passing rack 2 includes a first wire-passing plate 7 and a second wire-passing plate 8, and a third buckle 14 is formed at one end of the first wire-passing plate 7, a fourth buckle 15 is formed at the other end of the first wire-passing plate 7, and a fifth buckle 16 is formed at one end of the second wire-passing plate 8 away from the first wire-passing plate 7: a first clamping hole 30 is provided on the third side plate 24, a second clamping hole 31 is provided on the fourth side plate 25, and a third clamping hole 32 is provided on the fifth side plate 26, the first clamping hole 30 is relatively clamped with the third clamping hole 14, the second clamping hole 31 is relatively clamped with the fourth clamping hole 15, and the third clamping hole 32 is relatively clamped with the fifth clamping hole 16;

[0077] The fourth side panel 25 is also provided with a wire groove 33, a wire groove limiting buckle 34 and a third wire outlet 35. The wire groove 33 can lead out a third electric wire 36 electrically connected to the PCB board 1, the wire groove limiting buckle 34 can clamp and limit the third electric wire 36, and the third wire outlet 35 leads out the third electric wire 36.

[0078] This is a further preferred structural form of the electrical box substrate of the utility model, through the first clamping hole formed on the third side panel, and the third clamping arrangement of the wire passing rack to form a first installation position, the second clamping hole on the fourth side panel and the fourth clamping arrangement to form a second installation position, the third clamping hole on the fifth side panel and the fifth clamping arrangement to form a third installation position, thereby forming three installation positions, which can effectively and firmly fix the wire passing rack to the base of the electrical box; the utility model can also lead out and lead out the third electric wire electrically connected to the PCB board through the wire trough and the third wire outlet provided at the fourth side panel, and the wire trough limit buckle plays a role in limiting and fixing the extension direction of the third electric wire.

[0079] In some embodiments,

[0080] The first electric wire 5 forms a first water return bend 37 bending upward after extending out of the first wire outlet 28, and the second electric wire 6 forms a second water return bend 38 bending upward after extending out of the second wire outlet 29. A first wire fixing hook 39 is further provided on the third side plate 24 at the lower end of the first wire outlet 28, and the first wire fixing hook 39 is connected to the bottom of the first water return bend 37. A second wire fixing hook 40 is further provided on the third side plate 24 at the lower end of the second wire outlet 29, and the second wire fixing hook 40 is connected to the bottom of the second water return bend 38.

[0081] The utility model can also effectively prevent external water from entering the interior of the electrical box through the first electric wire by forming a first water return bend that bends upward after the first electric wire extends out of the first wire outlet, thereby providing waterproof protection for the electrical structure (especially the PCB board) inside the electrical box; and can effectively prevent external water from entering the interior of the electrical box through the second electric wire by forming a second water return bend that bends upward after the second electric wire extends out of the second wire outlet, thereby providing waterproof protection for the electrical structure (especially the PCB board) inside the electrical box. The first wire fixing hook can act on the bottom of the first water return bend to effectively support the first water return bend, and the second wire fixing hook can act on the bottom of the second water return bend to effectively support the second water return bend.

[0082] In the variable frequency electrical box of the utility model, the electrical box, the electrical box shielding box and the electrical box shielding box cover all have three wire outlets, which correspond to each other. The first wire outlet 28 and the second wire outlet 29 of the electrical box and the electrical box shielding box have a certain height difference, which are used to form a water return bend for wiring, and can prevent water outside the variable frequency electrical box from flowing into the PCB board of the variable frequency electrical box along the wiring. At the same time, a fixed wire hook is spot-welded on the outside of the variable frequency electrical box, and the position of the fixed wire hook is lower than the first wire outlet 28 and the second wire outlet 29. The wires coming out of the first and second wire outlets are fixed on the fixed wire hooks by wire ties, respectively, so as to ensure that the lowest position of the water return bend is lower than the first and second wire outlets. The gap after the wires come out of the first and second wire outlets is sealed with glue.

[0083] In some embodiments,

[0084] The third side plate 24 is provided with first guide ribs 41 on both sides connected to the third buckle 14, and the fourth side plate 25 is provided with second guide ribs on both sides connected to the fourth buckle 15.

[0085] A first sealing member 42 is provided at a gap formed between the first wire outlet 28 and the first wire 5 , and a second sealing member 43 is provided at a gap formed between the second wire outlet 29 and the second wire 6 .

[0086] The utility model can also position and guide the installation of the third buckle through the first guide rib set on the third side panel, thereby improving the efficiency of assembly and disassembly; the second guide rib set on the fourth side panel can position and guide the installation of the fourth buckle, thereby improving the efficiency of assembly and disassembly; the utility model can also effectively seal water and impurities on the outside of the electrical box through the first sealing member set at the gap at the first wire outlet and the second sealing member set at the gap at the second wire outlet, thereby avoiding water or impurities from entering the inside of the electrical box due to the setting of the wire outlet, thereby causing safety hazards.

[0087] The wire guide rack of the utility model is matched with the base of the electrical box by buckles, and the installation is convenient. At the same time, the electrical box is provided with guide ribs to guide the installation of the wire guide rack, so as to avoid the buckle on the wire guide rack and the assembly hole of the wire guide rack on the electrical box being misaligned and unable to be assembled due to the deviation of the wire guide rack during the installation process.

[0088] The utility model also provides an air conditioner (preferably a variable frequency window air conditioner), which includes the aforementioned electrical box 100 , and the electrical box 100 is installed on the outdoor unit assembly 200 .

[0089] The frequency conversion electrical box of the utility model is mainly composed of an electrical box shielding box body 18, an electrical box shielding box cover 19, an electrical box base 17, a mainboard assembly (PCB board 1), a wire rack 2, a ceiling board and a tongue. The electrical box base is designed with a fixing buckle 21, an elastic buckle 22, a wire slot 33, a buckle matching hole (a first clamp hole 30, a second clamp hole 31 and a third clamp hole 32), etc.; the wire rack is designed with a wire slot (a first wire structure 3 includes a wire slot, and the wire slot is mainly composed of a first side plate 9 and a second side plate 10) and a wire elastic buckle (a first buckle 12, a second buckle 13 and a buckle structure 11), etc. The power line can be separated from other high-frequency signal lines (inductor line, motor line) by the cooperation of the wire rack 2 and the electrical box base 17, avoiding the situation of unqualified EMC conduction; the electrical box components are placed vertically on the middle partition board and fixed by screws, a tongue clamped into a convex bump, etc.

[0090] The improved structure of the utility model is as follows: 1. The wire rack of the utility model is spaced a certain distance from the PCB board, and supports or stands up the line to avoid collision between the wire and components on the PCB board, ensure safety requirements, and avoid safety problems caused by melting of the wire insulation glue due to excessive temperature. It can not only ensure the separation of power lines and signal lines, but also prevent safety problems, and the detachable nature can improve disassembly and assembly efficiency.

[0091] 2. The existing structure does not have an electrical box base, and the mainboard assembly is directly connected to the shielding box, which will cause the risk of short circuit; the existing structure or the use of a support column structure to support the PCB board, used in a relatively light mainboard structure, for a relatively heavy mainboard, it is easy to cause the support column to break. The utility model adopts an electrical box base to effectively support the mainboard and form an insulating seal.

[0092] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the utility model should be included in the protection scope of the utility model. The above is only a preferred implementation of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the utility model, and these improvements and variations should also be regarded as the protection scope of the utility model.

Claims

1. An electrical box, characterized in that: include: A PCB board (1) and a wire-passing rack (2), wherein the wire-passing rack (2) has at least two installation positions, and a main structure of the wire-passing rack (2) located between two adjacent installation positions is spaced a certain distance from the PCB board (1); at least two wire-passing structures are arranged on the wire-passing rack (2) on a side away from the PCB board (1), including a first wire-passing structure (3) and a second wire-passing structure (4); the first wire-passing structure (3) can position and guide a first wire (5) electrically connected to the PCB board (1), and the second wire-passing structure (4) can position and guide a second wire (6) electrically connected to the PCB board (1).

2. The electrical box according to claim 1, characterized in that: The wire-passing frame (2) comprises a first wire-passing plate (7) and a second wire-passing plate (8); a first side plate (9) and a second side plate (10) protruding from the first wire-passing plate (7) are arranged on a side surface of the first wire-passing plate (7) away from the PCB board (1); the first side plate (9) and the second side plate (10) are spaced apart and arranged opposite to each other; a wire-passing groove is formed between the first side plate (9), the second side plate (10) and the first wire-passing plate (7); the first wire-passing structure (3) comprises the wire-passing groove; one end of the second wire-passing plate (8) is connected to the first wire-passing plate (7), and the other end extends in a direction away from the first wire-passing plate (7); a buckle structure (11) is arranged on the second wire-passing plate (8) to form the second wire-passing structure (4).

3. The electrical box according to claim 2, characterized in that: The first side plate (9) is further provided with a first buckle (12) protruding toward the second side plate (10), the second side plate (10) is further provided with a second buckle (13) protruding toward the first side plate (9), and the first wire-passing structure (3) includes the first buckle (12) and the second buckle (13); and / or, A third buckle (14) is formed at one end of the first wire-passing plate (7), a fourth buckle (15) is formed at the other end of the first wire-passing plate (7), and a fifth buckle (16) is formed at one end of the second wire-passing plate (8) away from the first wire-passing plate (7); the third buckle (14) is a first installation position, the fourth buckle (15) is a second installation position, and the fifth buckle (16) is a third installation position; the minimum distance between the first wire-passing plate (7) and the PCB board (1) is formed in a structure that first increases and then decreases from the direction of the third buckle (14) to the fourth buckle (15), and the minimum distance between the second wire-passing plate (8) and the PCB board (1) is formed in a structure that increases from the direction of the fifth buckle (16) to the first wire-passing plate (7), so that a hollow spacing space is formed between the wire-passing frame (2) and the PCB board (1) in the height direction.

4. The electrical box according to any one of claims 1 to 3, characterized in that: The invention also comprises an electrical box base (17), an electrical box shielding box body (18) and an electrical box shielding box cover (19); the electrical box shielding box body (18) and the electrical box shielding box cover (19) are connected to form a storage space therebetween; the PCB board (1) and the wire guide rack (2) are arranged in the storage space; the electrical box base (17) is arranged between the PCB board (1) and the electrical box shielding box body (18); and the PCB board (1) is supported and connected to the electrical box shielding box body (18) through the electrical box base (17).

5. The electrical box according to claim 4, characterized in that: The electrical box base (17) comprises a PCB board support platform (20), a fixing buckle (21) and an elastic buckle (22); the PCB board (1) is arranged on the PCB board support platform (20); the fixing buckle (21) is arranged so that at least a part of the structure of the PCB board (1) is located between the fixing buckle (21) and the PCB board support platform (20) so as to limit the position of the PCB board (1); the elastic buckle (22) is used for elastically clamping the installation of the PCB board (1); at least a part of the structure of the PCB board (1) is located between the elastic buckle (22) and the PCB board support platform (20).

6. The electrical box according to claim 5, characterized in that: The electrical box base (17) comprises a bottom plate (23), a third side plate (24), a fourth side plate (25), a fifth side plate (26) and a sixth side plate (27); the PCB board support platform (20) is an annular protruding step arranged on the bottom plate (23); at least one of the third side plate (24), the fourth side plate (25), the fifth side plate (26) and the sixth side plate (27) is provided with the fixing buckle (21) and the elastic buckle (22); the third side plate (24) is also provided with a first wire outlet (28) and a second wire outlet (29); the first wire outlet (28) and the second wire outlet (29) are both notch structures arranged on the third side plate (24); the first wire passing structure (3) and the first wire outlet (28) can guide the first wire (5) in sequence; the second wire passing structure (4) and the second wire outlet (29) can guide the second wire (6) in sequence.

7. The electrical box according to claim 6, characterized in that: When the wire-passing rack (2) comprises a first wire-passing plate (7) and a second wire-passing plate (8), and a third buckle (14) is formed at one end of the first wire-passing plate (7), a fourth buckle (15) is formed at the other end of the first wire-passing plate (7), and a fifth buckle (16) is formed at one end of the second wire-passing plate (8) away from the first wire-passing plate (7): a first clamping hole (30) is provided on the third side plate (24), a second clamping hole (31) is provided on the fourth side plate (25), and a third clamping hole (32) is provided on the fifth side plate (26); the first clamping hole (30) is relatively clamped with the third buckle (14), the second clamping hole (31) is relatively clamped with the fourth buckle (15), and the third clamping hole (32) is relatively clamped with the fifth buckle (16); The fourth side plate (25) is also provided with a wire slot (33), a wire slot limiting buckle (34) and a third wire outlet (35); the wire slot (33) can lead out a third electric wire (36) electrically connected to the PCB board (1); the wire slot limiting buckle (34) can clamp and limit the third electric wire (36); and the third wire outlet (35) leads out the third electric wire (36).

8. The electrical box according to claim 6, characterized in that: The first electric wire (5) forms a first water return bend (37) bent upward after extending out of the first wire outlet (28), and the second electric wire (6) forms a second water return bend (38) bent upward after extending out of the second wire outlet (29). A first wire fixing hook (39) is further provided on the third side plate (24) at a lower end located at the first wire outlet (28), and the first wire fixing hook (39) is connected to the bottom of the first water return bend (37). A second wire fixing hook (40) is further provided on the third side plate (24) at a lower end located at the second wire outlet (29), and the second wire fixing hook (40) is connected to the bottom of the second water return bend (38).

9. The electrical box according to claim 7, characterized in that: The third side plate (24) is provided with first guide ribs (41) on both sides connected to the third buckle (14), and the fourth side plate (25) is provided with second guide ribs on both sides connected to the fourth buckle (15). A first sealing member (42) is provided at a gap formed between the first wire outlet (28) and the first wire (5), and a second sealing member (43) is provided at a gap formed between the second wire outlet (29) and the second wire (6).

10. An air conditioner, characterized in that: The invention comprises the electrical box according to any one of claims 1 to 9.

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