CN221375825U - Electric controller for air conditioner external unit - Google Patents

Abstract

The application relates to an air conditioner external unit electric controller. The wiring groove is offered to first casing, and the line body sets up in the wiring inslot, and the wiring groove has inlet and outlet, observes along the direction of outlet to first installation space, and inlet and outlet do not overlap for in outside steam is difficult for getting into the PCB board, reduces the erosion damage that outside steam caused the circuit board, reduces the risk of short circuit, has improved the waterproof performance of equipment. One end of the wire body is directly connected in the slot of the PCB, the other end of the wire body penetrates into the wire inlet and enters the wiring groove, and then penetrates out of the wire outlet to be connected with external equipment, so that a transfer terminal and an adapter wire are not needed, the trend of the wire body is limited through the wiring groove, the wire body connection is simplified, the assembly structure of an air conditioner external unit electric controller is simplified, the arrangement is convenient, and the cost is reduced. And the radiator is arranged outside the first installation space of the first shell, and can radiate the heat of the electronic element on the PCB board through air flow or a fan, so that damage caused by overheat of the electronic element is reduced.

Description

Electric controller for air conditioner external unit

Technical Field

The utility model relates to the technical field of air conditioners, in particular to an electric controller of an air conditioner external unit.

Background

Currently, a variable frequency window type air conditioner product is generally provided with a variable frequency module electric controller, and the window type air conditioner electric controller needs to have the functions of heat dissipation, water resistance, fire resistance, convenient wiring and the like. The current common scheme is to place the PCB device in the electric control box upside down, and the scheme is that the common radiator and the inductor are positioned on the same surface with other devices of the PCB, and is called an upside down scheme for short. However, in the reverse-discharge scheme, through the terminal block patch cord, the wiring operation is complicated, the cost is high, and the waterproof effect of the wiring port which is always connected with the outside is poor.

Disclosure of utility model

The embodiment of the application aims to provide an air conditioner external unit electric controller so as to solve the problems of complex wiring, complex operation and poor waterproof effect of the air conditioner external unit electric controller.

In order to solve the technical problems, the embodiment of the application adopts the following technical scheme:

In a first aspect, an embodiment of the present application provides an air conditioner outdoor unit electric controller, including: the PCB comprises a first shell, a PCB, a wire body and a radiator. The first shell is provided with a first installation space, the first shell is provided with a wiring groove, the wiring groove is provided with a wire inlet and a wire outlet, and the wire inlet and the wire outlet are not overlapped when being observed along the direction from the wire inlet to the first installation space; the first shell is further provided with a first mounting opening communicated with the first mounting space. The PCB is connected to the first shell and seals the first mounting opening, the PCB is provided with a first surface facing the first mounting space, the first surface is provided with electronic components, and the electronic components are located in the first mounting space; the first surface also has a slot. The wire body set up in the wiring groove, and the wire body extend in first installation space, the wire body peg graft in the slot. The radiator is arranged on the first surface and is positioned outside the first installation space.

In some preferred embodiments, the first housing further has a first heat dissipation space, and the heat sink is at least partially disposed in the first heat dissipation space. The first housing further includes a first side plate that separates the first installation space from the first heat dissipation space.

In some preferred embodiments, the heat radiator comprises a heat radiating substrate and a plurality of heat radiating fins, the heat radiating substrate is attached to the first surface of the PCB, the plurality of heat radiating fins are all arranged on the heat radiating substrate and deviate from the PCB, and the heat radiating fins are all extended in the first heat radiating space.

In some preferred embodiments, the plurality of heat dissipation fins are sequentially arranged on the heat dissipation substrate at intervals. The first shell faces the inner wall of the first heat dissipation space and is convexly provided with a plurality of ribs, and the ribs are arranged between two adjacent heat dissipation fins.

In some preferred embodiments, the first side plate is provided with a first air duct, and the first air duct is communicated with the first installation space. The first air duct comprises a first air inlet and a first air outlet, and the first air inlet and the first air outlet are not overlapped when observed along the direction from the first air outlet to the first installation space.

In some preferred embodiments, the air conditioner outdoor unit controller further includes a second housing. The second shell is connected to one end, away from the PCB, of the first shell, and the second shell covers the first installation space. The second shell is provided with a second air duct which is communicated with the first installation space. The second air duct comprises a second air inlet and a second air outlet, and the second air inlet and the second air outlet are not overlapped when observed along the direction from the second air outlet to the first installation space.

In some preferred embodiments, the first side plate has a first extension extending toward the first installation space. The second housing further includes a first side wall provided with a first vent hole facing the first extension portion.

In some preferred embodiments, the PCB further includes a second surface disposed opposite the first surface. The air conditioner external unit electric controller further comprises a cover body, and the second surface is attached to the cover body. The first shell is further provided with a second mounting port communicated with the first heat dissipation space, and the cover body seals the first mounting port and the second mounting port.

In some preferred embodiments, a first drain hole and a second drain hole are formed in a surface of the second housing facing the PCB, the first drain hole faces the first side plate, the second drain hole faces the wiring groove, and the first drain hole and the second drain hole are both in communication with the first installation space.

In some preferred embodiments, the second housing includes a second side wall opposite to the first side wall, one end of the first side wall, which is close to the cover body, is connected with a second extension portion, the second extension portion is bent towards a direction away from the installation space, and a first installation hole is formed in the second extension portion, and the first installation hole is used for being installed with the first housing. The second lateral wall is close to the one end of lid is connected with the third extension, the third extension is towards deviating from the direction bending set of installation space, the second mounting hole has been seted up on the third extension, the second mounting hole is used for with external equipment installation.

Different from the situation of the related art, the embodiment of the application provides an external electric controller of an air conditioner, which comprises a first shell, a PCB (printed circuit board), a wire body and a radiator. The wiring groove is offered to first casing, and the line body sets up in the wiring inslot, and the wiring groove has inlet and outlet, observes along the direction of outlet to first installation space, and inlet and outlet do not overlap for in outside steam is difficult for getting into the PCB board, reduces the erosion damage that outside steam caused the circuit board, reduces the risk of short circuit, has improved the waterproof performance of equipment. One end of the wire body is directly connected in the slot of the PCB, the other end of the wire body penetrates into the wire inlet and enters the wiring groove, and then the wire body penetrates out of the wire outlet to be connected with external equipment, so that a transfer terminal and an adapter wire are not needed, the trend of the wire body is limited through the wiring groove, the wire body connection is simplified, the assembly structure of an air conditioner external unit electric controller is simplified, the arrangement is convenient, and the cost is effectively reduced. And the radiator is arranged outside the first installation space of the first shell, and can radiate the heat of the electronic element on the PCB board through natural air flow or the fan, so that damage caused by overheat of the electronic element is effectively reduced.

Drawings

FIG. 1 is a schematic diagram of some air conditioner outdoor unit controllers according to an embodiment of the present application;

FIG. 2 is a schematic view of some first housings and wire structures according to an embodiment of the application;

FIG. 3 is a schematic view of some first housings according to an embodiment of the application;

FIG. 4 is an exploded view of some of the air conditioner outdoor unit controls according to an embodiment of the present application;

FIG. 5 is a schematic diagram of some heat sinks according to embodiments of the present application;

FIG. 6 is a schematic diagram of some of the external air conditioner controllers according to an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of some air conditioner outdoor unit controllers according to an embodiment of the present application;

Fig. 8 is an exploded view of some air conditioner outdoor unit controllers according to an embodiment of the present application.

Description of the drawings:

100. An air conditioner external unit electric controller;

10. A first housing; 11. a first installation space; 12. wiring grooves; 121. a wire inlet; 122. a wire outlet; 13. a first heat dissipation space; 14. ribs; 15. a first side plate; 151. a first air duct; 1511. a first air outlet; 16. a first extension; 17. a first mounting port; 18. a second mounting port; 19. a first mounting portion;

20. a PCB board; 21. a first surface; 211. a slot; 22. a second surface;

30. A heat sink; 31. a heat-dissipating substrate; 32. a heat radiation fin;

40. a second housing; 41. a second air duct; 42. a first sidewall; 421. a first vent; 422. a second vent hole; 43. a first drain hole; 44. a second drain hole; 45. a second sidewall; 46. a second extension; 461. a first mounting hole; 47. a third extension; 471. a second mounting hole;

50. A cover body;

60. a first screw;

70. A wire body.

Detailed Description

Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of embodiments of the application, the meaning of "a number" is more than one unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. In addition, the technical features mentioned in the different embodiments of the application described below can be combined with one another as long as they do not conflict with one another.

In a first aspect, an embodiment of the present application provides an air conditioner external unit controller 100, referring to fig. 1 and 2, the air conditioner external unit controller 100 includes a first housing 10, a PCB board 20, a wire body 70 and a radiator 30.

For the first housing 10, referring to fig. 1 to 3, the first housing 10 has a first installation space 11, where the first installation space 11 is an area or space for providing installation and operation for a specific device, system or component, so as to ensure that the specific device, system or component can operate normally. The first housing 10 is a case or housing for accommodating a circuit board, components, and the like, which can be used to protect the circuit board, the electronic components, and internal circuits thereof to some extent. The first housing 10 is provided with a wiring groove 12, the wiring groove 12 is provided with a wire inlet 121 and a wire outlet 122, the wire inlet 121 and the wire outlet 122 are respectively arranged on different side walls of the wiring groove 12, and the wire inlet 121 and the wire outlet 122 are not overlapped when observed along a direction X from the wire outlet 122 to the first installation space 11. If the inlet 121 and the outlet 122 overlap, water flows along the outlet 122 to the inlet 121 to enter the circuit board once water leakage occurs, which easily causes short circuit of the circuit board. In the embodiment of the application, the wire inlet 121 and the wire outlet 122 are not overlapped, so that the wire trough 12 and the wire body 70 can block part of water vapor, the damage of external water vapor to the circuit board can be reduced, the risk of short circuit is reduced, and the waterproof performance of the equipment is improved. The first housing 10 is further provided with a first mounting opening 17 communicated with the first mounting space 11, and components such as a circuit board and an electronic component can be placed in the first mounting space 11 through the mounting opening, so that the circuit board and the electronic component can be mounted conveniently.

For the above-mentioned PCB 20, please refer to fig. 1 and 4, the PCB 20 (Printed Circuit Board ), also called a circuit board or a circuit board, is a substrate for mechanical support and electronic connection, and is covered with copper wires for connecting electronic components and transmitting electrical signals. The PCB board 20 in the embodiment of the present application is connected to the first housing 10 and seals the first mounting port 17. The PCB 20 further has a first surface 21 facing the first mounting space 11, and electronic components including an inductor, a battery, etc. are disposed on the first surface 21, and the electronic components are located in the first mounting space 11.

For the wire body 70, the wire body 70 can adopt a wire harness formed by binding a plurality of wires together, and the size of the wire harness can be matched with the size of the wiring groove so as to fully fill the space of the wiring groove and reduce the entry of external water vapor. Referring to fig. 1 to 3, the wire body 70 is disposed in the wiring groove 12, and the wire body 70 extends in the first installation space 11, the first surface 21 of the pcb 20 further has a slot 211, one end of the wire body 70 is directly inserted into the slot 211, and the other end of the wire body penetrates into the wire inlet 121 to enter the wiring groove 12, and then penetrates out of the wire outlet 122. The above design does not need a transfer terminal and a transfer line, and the wire body 70 can be directly connected with the PCB 20 through the wiring groove 12, so that the assembly structure of the external electric controller 100 of the air conditioner is simplified, and the cost is reduced. The wire body 70 in the embodiment of the application can be a single wire or a wire harness formed by combining a plurality of wires with different specifications, the size of the wiring groove 12 can be designed according to the sizes of the different wire bodies 70, and the wire body can fill the wiring groove 12 as much as possible, so that external water vapor is not easy to flow into the PCB 20, the waterproof effect of the air conditioner external unit electric controller 100 is further enhanced, and the waterproof structure of the IPX4 is achieved.

For the heat sink 30, referring to fig. 1 and 4, the heat sink 30 is a device for dissipating heat, and the heat sink 30 may be a plurality of fins or fins, and is usually made of aluminum or copper material. The heat sink 30 is disposed on the first surface 21, and the heat sink 30 is located outside the first installation space 11. The inductor, battery, etc. on the circuit board may generate a lot of heat when operating, and the inductor, battery, etc. may be disposed close to the heat sink 30 to transfer heat from such high temperature components to the heat sink 30, and the heat sink 30 may dissipate heat to the surrounding environment by natural convection or a fan.

In some preferred embodiments, referring to fig. 3 to 5, the first housing 10 further has a first heat dissipation space 13, and the heat sink 30 is at least partially disposed in the first heat dissipation space 13 and contacts with air. The heat sink 30 includes a heat radiating base plate 31 and a number of heat radiating fins 32, for example, the number of the heat radiating fins 32 may be 1 or more than 1. The heat dissipation substrate 31 is attached to the first surface 21 of the PCB 20, and the plurality of heat dissipation fins 32 are disposed on the heat dissipation substrate 31 and away from the PCB 20, and the heat dissipation fins 32 extend in the first heat dissipation space 13.

In the embodiment of the application, the external air conditioner controller 100 includes a first housing 10, a PCB board 20, a wire body 70 and a radiator 30. The wiring groove 12 has been seted up to first casing 10, and the line body 70 sets up in wiring groove 12, and wiring groove 12 has inlet 121 and outlet 122, observes along the direction of outlet 122 to first installation space 11, and inlet 121 and outlet 122 do not overlap for outside steam is difficult for getting into in the PCB board 20, reduces the erosion damage that outside steam caused the circuit board, reduces the risk of short circuit, has improved the waterproof performance of equipment. One end of the wire body 70 is directly connected to the slot 211 of the PCB 20, the other end of the wire body penetrates into the wire inlet 121 and enters the wire slot 12, and then penetrates out of the wire outlet 122 to be connected with external equipment, so that a transfer terminal and an adapter wire are not needed, the trend of the wire body 70 is limited through the wire slot 12, the connection of the wire body 70 is simplified, the assembly structure of the external air conditioner controller 100 is simplified, the arrangement is convenient, and the cost is effectively reduced. In addition, the radiator 30 is disposed outside the first installation space 11 of the first housing 10, and can radiate heat from the electronic components on the PCB 20 through natural air flow or a fan, so as to effectively reduce damage caused by overheating of the electronic components.

In some embodiments, referring to fig. 5, a plurality of heat dissipation fins 32 are sequentially arranged on the heat dissipation substrate 31 at intervals, and the heat dissipation surface area is increased by arranging the heat dissipation fins 32 at intervals, so as to promote air flow and improve heat dissipation efficiency. Referring to fig. 3 and 6 again, the inner wall of the first housing 10 facing the first heat dissipation space 13 is provided with a plurality of ribs 14 in a protruding manner, and ribs 14 are disposed between two adjacent heat dissipation fins 32. The heat dissipation fins 32 are disposed on the heat dissipation substrate 31, and the heat dissipation substrate 31 is in direct contact with the PCB 20, so that external moisture may flow into the PCB 20 through the gap due to the gap between the heat dissipation substrate 31 and the first housing 10, thereby damaging the electronic components. By arranging the ribs 14 between two adjacent radiating fins 32 and controlling the distance between the ribs 14 and the radiating fins 32 to be 0.1mm to 1mm, the ribs 14 can seal the gaps, so that external water vapor is not easy to enter the gaps, the waterproof performance of the external air conditioner controller 100 is enhanced, and the waterproof effect of IPX4 is achieved.

In some embodiments, referring to fig. 3 and 6, the first housing 10 further includes a first side plate 15, and the first side plate 15 separates the first installation space 11 from the first heat dissipation space 13. The first side plate 15 is provided with a first air channel 151, the first air channel 151 is communicated with the first installation space 11, and the first air channel 151 can introduce air into the first installation space 11, so that the air in the first installation space 11 and the air in the first heat dissipation space 13 are exchanged, and the purpose of heat dissipation is achieved. The first air duct 151 includes a first air inlet (not labeled in the figure) and a first air outlet 1511, and the first air inlet and the first air outlet 1511 are not overlapped when viewed along the direction Y from the first air outlet 1511 to the first installation space 11, so that water vapor is reduced to directly enter the first installation space 11 through the first air duct 151, and the waterproof performance of the air conditioner external electric controller 100 is enhanced.

In some embodiments, referring to fig. 4 and 7, the external air conditioner controller 100 further includes a second housing 40. The second housing 40 is connected to an end of the first housing 10 facing away from the PCB board 20, and the second housing 40 covers the first installation space 11. The second housing 40 is provided with a second air duct 41, wherein two opposite side walls of the first housing 10 are designed as openings, so that the second air duct 41 is directly communicated with the first installation space 11. The second air duct 41 includes a second air inlet (not labeled in the figure) and a second air outlet (not labeled in the figure), and the second air inlet and the second air outlet are not overlapped when viewed along the direction from the second air outlet to the first installation space 11, so that water vapor is effectively reduced from directly entering the first installation space 11 through the second air duct 41, and the waterproof performance of the external electric controller 100 of the air conditioner is enhanced. The second housing 40 is disposed outside the air conditioner external controller 100, so as to effectively reduce the impact of the electronic components on the PCB 20 from the outside, and has waterproof and dustproof effects, thereby ensuring the normal operation of the electronic components.

In some embodiments, referring to fig. 4 and 8, the first side plate 15 has a first extension 16 extending toward the first installation space 11. The second housing 40 further includes a first sidewall 42, and the first sidewall 42 is provided with a first vent hole 421 and a second vent hole 422, and the first vent hole 421 and the second vent hole 422 are both in communication with the first installation space 11. The first ventilation hole 421 faces the first extension portion 16, and the first ventilation hole 421 is blocked by the first extension portion 16, so that external water vapor can be reduced from directly flowing into the first installation space 11, and the waterproof performance of the device is improved. Similar to the function of the first ventilation hole 421, the second ventilation hole 422 faces the side wall of the wiring groove 12, and the second ventilation hole 422 is shielded by the side wall of the wiring groove 12, so that water can be reduced from directly flowing into the first installation space 11, and the waterproof performance of the device is improved.

In some embodiments, referring to fig. 3 and 4, the pcb 20 further includes a second surface 22 disposed opposite to the first surface 21. The air conditioner external controller 100 further includes a cover 50, and the second surface 22 is attached to the cover 50. The first housing 10 is further provided with a second mounting opening 18 communicated with the first heat dissipation space 13, and the cover 50 seals the first mounting opening 17 and the second mounting opening 18 to reduce the entry of contaminants such as moisture and dust into the PCB 20.

In some embodiments, referring to fig. 4 and 8, a first drain hole 43 and a second drain hole 44 are formed on a surface of the second housing 40 facing the PCB 20, the first drain hole 43 faces the first side board 15, the second drain hole 44 faces the wiring groove 12, and the first drain hole 43 and the second drain hole 44 are both in communication with the first installation space 11. Because the embodiment of the application adopts the reverse arrangement scheme, the second shell 40 is positioned at the bottommost end of the external air conditioner controller 100, when a small amount of water enters the first installation space 11, the water can be concentrated on the second shell 40, and the water in the second shell 40 can be discharged out of the equipment through the first water discharge hole 43 and the second water discharge hole 44, so that the dry environment of the first installation space 11 is ensured, and the short circuit of electronic components on the PCB 20 is avoided.

In some embodiments, referring to fig. 4 and 8, the second housing 40 includes a second side wall 45 opposite to the first side wall 42, one end of the first side wall 42 near the cover 50 is connected with a second extension portion 46, the second extension portion 46 is bent towards a direction away from the installation space, and a first installation hole 461 is formed in the second extension portion 46, where the first installation hole 461 is used for installing with the first housing 10. Further, the external air conditioner controller 100 further includes a first screw 60, the first housing 10 further includes a first mounting portion 19, and the first screw 60 is threaded through the first mounting hole 461 and is connected with the first mounting portion 19. The second side wall 45 is connected with the third extension portion 47 near the one end of lid 50, and the third extension portion 47 is towards deviating from the direction bending setting of installation space, has seted up the second mounting hole 471 on the third extension portion 47, and the second mounting hole 471 is used for with external equipment installation. The second extending portion 46 and the third extending portion 47 can shield external water vapor, such as rainwater, so that the probability that the external water vapor enters the first installation space 11 through the second air duct 41, the first air vent 421 and the second air vent 422 is reduced, and the waterproof performance of the air conditioner external unit electric controller 100 is further enhanced.

It should be noted that while the present utility model has been illustrated in the drawings and described in connection with the preferred embodiments thereof, it is to be understood that the utility model may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but are to be construed as providing a full breadth of the disclosure. The above-described features are further combined with each other to form various embodiments not listed above, and are considered to be the scope of the present utility model described in the specification; further, modifications and variations of the present utility model may be apparent to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be included within the scope of this utility model as defined in the appended claims.

Claims (10)

1. An air conditioner outdoor unit electric controller, which is characterized by comprising:

The first shell is provided with a first installation space, the first shell is provided with a wiring groove, the wiring groove is provided with a wire inlet and a wire outlet, and the wire inlet and the wire outlet are not overlapped when being observed along the direction from the wire inlet to the first installation space; the first shell is also provided with a first mounting port communicated with the first mounting space;

The PCB is connected to the first shell and seals the first mounting opening, the PCB is provided with a first surface facing the first mounting space, the first surface is provided with electronic components, and the electronic components are located in the first mounting space; the first surface is also provided with a slot;

The wire body is arranged in the wiring groove, extends in the first installation space and is inserted into the slot;

and the radiator is arranged on the first surface and is positioned outside the first installation space.

2. The outdoor unit electric controller of claim 1, wherein the first housing further has a first heat dissipation space, and the heat sink is at least partially disposed in the first heat dissipation space;

The first housing further includes a first side plate that separates the first installation space from the first heat dissipation space.

3. The outdoor unit electric controller of claim 2, wherein the radiator comprises a heat radiating substrate and a plurality of heat radiating fins, the heat radiating substrate is attached to the first surface of the PCB, the plurality of heat radiating fins are all arranged on the heat radiating substrate and are away from the PCB, and the heat radiating fins are all extended in the first heat radiating space.

4. The outdoor unit electric controller of claim 3, wherein the plurality of heat dissipation fins are sequentially arranged on the heat dissipation substrate at intervals;

The first shell faces the inner wall of the first heat dissipation space and is convexly provided with a plurality of ribs, and the ribs are arranged between two adjacent heat dissipation fins.

5. The outdoor unit electric controller of claim 2, wherein the first side plate is provided with a first air duct, and the first air duct is communicated with the first installation space;

The first air duct comprises a first air inlet and a first air outlet, and the first air inlet and the first air outlet are not overlapped when observed along the direction from the first air outlet to the first installation space.

6. The outdoor unit electric controller of claim 2, further comprising a second housing;

The second shell is connected to one end of the first shell, which is far away from the PCB, and covers the first installation space;

The second shell is provided with a second air duct which is communicated with the first installation space;

The second air duct comprises a second air inlet and a second air outlet, and the second air inlet and the second air outlet are not overlapped when observed along the direction from the second air outlet to the first installation space.

7. The outdoor unit electric controller of claim 6, wherein the first side plate has a first extension extending toward the first installation space;

the second housing further includes a first side wall provided with a first vent hole facing the first extension portion.

8. The outdoor unit electric controller of claim 7, wherein the PCB further comprises a second surface disposed opposite the first surface;

The air conditioner external unit electric controller also comprises a cover body, and the second surface is attached to the cover body;

the first shell is further provided with a second mounting port communicated with the first heat dissipation space, and the cover body seals the first mounting port and the second mounting port.

9. The outdoor unit electric controller of claim 6, wherein a first drain hole and a second drain hole are formed in a surface of the second housing facing the PCB, the first drain hole faces the first side plate, the second drain hole faces the wiring groove, and the first drain hole and the second drain hole are both communicated with the first installation space.

10. The outdoor unit electric controller of claim 8, wherein the second housing comprises a second side wall opposite to the first side wall, one end of the first side wall near the cover body is connected with a second extension part, the second extension part is bent towards a direction deviating from the installation space, and a first installation hole is formed in the second extension part and is used for being installed with the first housing;

The second lateral wall is close to the one end of lid is connected with the third extension, the third extension is towards deviating from the direction bending set of installation space, the second mounting hole has been seted up on the third extension, the second mounting hole is used for with external equipment installation.