Aviation plug

Abstract

The utility model discloses an aviation plug, and relates to the technical field of plugs. The aviation plug comprises a plug body and a socket, the plug body comprises a first shell and a power source transmitting module connected with the first shell, the power source transmitting module comprises a first coil, and the first coil is arranged inside the first shell or outside the first shell and is subjected to waterproof treatment; the socket comprises a second shell detachably connected with the first shell and a power supply receiving module connected with the second shell, the power supply receiving module comprises a second coil, and the second coil is arranged inside the second shell or outside the second shell and is subjected to waterproof treatment; when the plug is connected with the socket, the first coil and the second coil are oppositely arranged for wireless energy transmission. According to the aviation plug, the coils capable of performing wireless energy transmission are arranged in the plug and the socket, and the coils are arranged inside or outside the shell and are subjected to waterproof treatment, so that the waterproof performance of the aviation plug is improved, the service life of the aviation plug is prolonged, and the use safety of the aviation plug is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plugs, in particular to an aviation plug. Background Art

[0002] In daily production and life, plugs play a very important role. As an electrical connector, plugs can not only transmit electrical energy, but also transmit data information in some cases. Aviation plugs, as a type of plug, are mainly used in the electrical system of aircraft to ensure the safe and reliable operation of the aircraft electrical system. Compared with other plugs, aviation plugs need to work in complex environments and withstand special environments such as high temperature, high pressure, high altitude, and low temperature.

[0003] As a transmission medium for electric energy and data information, aviation plugs need to effectively prevent the influence of factors such as moisture and humidity on the plugs. Generally, aviation plugs include plugs and sockets, which are provided with metal conductive materials. The transmission of electric energy and data information is achieved through the mutual connection of metal conductive materials. During installation, the metal conductive materials in the plug and socket need to be aligned. If the plug and socket are not aligned or the connection is not stable enough, moisture will enter the metal conductive materials, resulting in the inability to transmit electric energy, failure of data collection, and even potential safety hazards.

[0004] Therefore, it is necessary to design a waterproof aviation plug; in addition, the plug needs to be easily installed in the socket while ensuring the connection stability.

[0005] The above contents are only used to help understand the technical solution of this application and do not constitute an admission that the above contents are prior art. Utility Model Content

[0006] The utility model aims to provide an aviation plug which can effectively prevent water.

[0007] In order to achieve the above-mentioned utility model object, the utility model proposes an aviation plug, which includes:

[0008] A plug, comprising a first shell and a transmitting module connected to the first shell, wherein the transmitting module comprises a first coil, and the first coil is arranged inside the first shell, or is arranged outside the first shell and waterproofed; and

[0009] A socket, comprising a second shell detachably connected to the first shell and a receiving module connected to the second shell, wherein the receiving module comprises a second coil, and the second coil is arranged inside the second shell, or is arranged outside the second shell and waterproofed;

[0010] When the plug is connected to the socket, the first coil and the second coil are arranged opposite to each other to perform wireless energy transmission.

[0011] Further, the first coil and the second coil are both in a planar spiral shape;

[0012] The transmitting module comprises a first PCB board, and the first coil is arranged on a surface of the first PCB board facing the socket;

[0013] The receiving module includes a second PCB board, and the second coil is arranged on a surface of the second PCB board facing the plug.

[0014] Further, the transmitting module includes a first capacitor electrically connected to the first coil, and the first coil and the first capacitor form a first LC resonant circuit;

[0015] The receiving module includes a second capacitor electrically connected to the second coil, and the second coil and the second capacitor form a second LC resonant circuit;

[0016] A first LC resonant circuit formed by the first coil and the first capacitor has the same resonant frequency as a second LC resonant circuit formed by the second coil and the second capacitor.

[0017] Furthermore, the first coil and the second coil are circular spirals or square spirals.

[0018] Furthermore, the transmitting module and the receiving module respectively include a first magnetic isolation sheet and a second magnetic isolation sheet;

[0019] The first magnetic isolation sheet is arranged on a surface of the first PCB board facing away from the first coil; the second magnetic isolation sheet is arranged on a surface of the second PCB board facing away from the second coil.

[0020] Furthermore, the projection of the first coil on the first magnetic isolation sheet does not exceed the outer edge of the first magnetic isolation sheet, and the projection of the second coil on the second magnetic isolation sheet does not exceed the outer edge of the second magnetic isolation sheet.

[0021] Further, the transmitting module includes a third PCB board, a power amplifier module arranged on the third PCB board, and a power conversion module electrically connected to the power amplifier module, and the third PCB board and the first PCB board are separated by the first magnetic isolation sheet;

[0022] The receiving module includes a fourth PCB board and a rectifier module and a voltage stabilizing module both arranged on the fourth PCB board, the rectifier module and the voltage stabilizing module are electrically connected, and the fourth PCB board and the second PCB board are separated by the second magnetic isolation sheet.

[0023] Furthermore, the thickness of the first magnetic isolation sheet and the second magnetic isolation sheet is 0.1 mm to 0.5 mm.

[0024] Furthermore, the first housing includes a first cavity and a first partition that seals an opening of the first cavity toward the second housing, and the first PCB board is disposed on the first partition;

[0025] The second housing includes a second cavity and a second partition plate sealing an opening of the second cavity toward the first housing, and the second PCB board is arranged on the second partition plate;

[0026] When the plug is connected to the socket, the first partition plate and the second partition plate are arranged opposite to each other and in parallel.

[0027] Furthermore, the first shell and the second shell are provided with mutually matching threads, and the plug and the socket are connected by threads.

[0028] Furthermore, the first shell includes a slot, the second shell includes a claw, and the plug and the socket are snap-connected via the claw and the slot.

[0029] Furthermore, the waterproof treatment is carried out by providing a waterproof coating covering the surface circuits of the first PCB board and the second PCB board.

[0030] Compared with the prior art, the utility model has the following beneficial effects: the aviation plug includes a plug and a socket, the plug includes a first shell and a power transmitting module, the power transmitting module includes a first coil, the first coil is arranged inside the first shell or outside the first shell and waterproof treatment is performed; the socket includes a second shell and a power receiving module, the power receiving module includes a second coil, the second coil is arranged inside the second shell or outside the second shell and waterproof treatment is performed; when the plug and the socket are connected, the first coil and the second coil are arranged relative to each other for wireless energy transmission. By arranging the coil for wireless energy transmission inside the shell or outside the shell and waterproof treatment is performed, the waterproof performance of the aviation plug can be improved, thereby improving the service life and use safety of the aviation plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a cross-sectional view of an aviation plug according to an embodiment of the present utility model.

[0032] Figure 2 yes Figure 1 The cross-sectional view of the aviation plug shown after the plug and socket are installed.

[0033] Figure 3 yes Figure 1 The connection diagram of the circuit module of the aviation plug is shown.

[0034] Figure 4 It is a schematic diagram of a coil of an aviation plug according to an embodiment of the utility model.

[0035] Figure 5 This is a schematic diagram of the coil of an aviation plug in one embodiment of the utility model. Figure 4 and Figure 5 The coils shown are of different shapes.

[0036] Figure 6 This is a cross-sectional view of an aviation plug according to an embodiment of the present utility model. Figure 1 and Figure 6 The positions of the coil and PCB board in the aviation plug shown are different. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some structures related to the present application are shown in the accompanying drawings, rather than all structures. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] like Figures 1 to 3 As shown, an aviation plug corresponding to a preferred embodiment of the utility model includes a plug 1 and a socket 2.

[0041] The plug 1 includes a first shell 11 and a transmitter module 10 connected to the first shell 11. The transmitter module 10 includes a first coil 1020. In some embodiments, the first coil 1020 is disposed inside the first shell 11. The first shell 11 protects the first coil 1020 to prevent external moisture from contacting the first coil 1020, thereby achieving a waterproof effect. In other embodiments, the first coil 1020 can be disposed outside the first shell 11 and waterproofed, and the waterproofing effect is achieved by the waterproofing treatment.

[0042] The socket 2 includes a second shell 21 detachably connected to the first shell 11 and a receiving module 20 connected to the second shell 21. The receiving module 20 includes a second coil 2000. In some embodiments, the second coil 2000 is disposed inside the second shell 21. The second shell 21 includes the second coil 2000 to prevent external moisture from contacting the second coil 2000, thereby achieving a waterproof effect. In other embodiments, the second coil 2000 is disposed outside the second shell 21 and is waterproofed, and the waterproofing effect is achieved by the waterproofing treatment.

[0043] It can be understood that the first coil 1020 and the second coil 2000 can be arranged outside the corresponding shell at the same time or inside the corresponding shell at the same time, or one of them can be arranged inside the corresponding shell and the other can be arranged outside the corresponding shell.

[0044] When the plug 1 is connected to the socket 2, the first coil 1020 and the second coil 2000 are arranged relative to each other for wireless energy transmission, such as power transmission (charging) or data signal transmission. The method of wireless energy transmission can be, for example, the QI standard promoted by the WPC Alliance, also known as magnetic induction coupling technology, or the magnetic resonance coupling technology promoted by the Airfuel Alliance, or the electromagnetic radiation wireless energy transmission technology. Optionally, in this embodiment, the wireless energy transmission adopts magnetic resonance coupling technology. Compared with magnetic induction technology, magnetic resonance coupling technology has obvious advantages in charging distance, transmission efficiency and power extension; compared with electromagnetic radiation wireless energy transmission technology, magnetic resonance coupling technology has more practical value in terms of energy conversion efficiency, transmission power and electromagnetic safety. In some embodiments, the plug 1 and the socket 2 adopt two-way wireless communication, and the information transmission rate can reach 4800bit / s.

[0045] It is understandable that by replacing the aviation plug connection with a wireless transmission mode, there is no need for a jack and a pin, and there will be no problem of socket alignment. In addition, by arranging the coil inside or outside the shell and performing waterproof treatment, the waterproof performance of the aviation plug can be improved, and even if water enters the connection, it can still work normally, thereby improving the service life and safety of the aviation plug. In addition, the plug 1 and the socket 2 are detachably connected through the first shell 11 and the second shell 21, so that the plug 1 is conveniently connected to the socket 2.

[0046] Optionally, the first coil 1020 and the second coil 2000 are both in a planar spiral shape, thereby increasing the area of ​​energy transmission and improving the efficiency of energy transmission. Figure 4 and Figure 5 The shapes of the first coil 1020 and the second coil 2000 when they are circular spirals and square spirals are shown respectively. The outer dimensions of the first coil 1020 and the second coil 2000 can be determined according to the outer dimensions of the aviation plug, that is, the line width, line spacing, number of turns, etc. of the coil are set according to the outer dimensions of the aviation plug.

[0047] It is understandable that the shapes of the plug 1 and the socket 2 of the aviation plug can be selected according to actual conditions. In some embodiments, the cross-sections of the plug 1 and the socket 2 are circular. In other embodiments, the cross-sections of the plug 1 and the socket 2 of the aviation plug are square. The shape of the coil is preferably adapted to the cross-sectional shape of the plug 1 and the socket 2. For example, when the cross-sections of the plug 1 and the socket 2 are circular, the first coil 1020 and the second coil 2000 are arranged as a circular spiral, and when the cross-sections of the plug 1 and the socket 2 are square, the first coil 1020 and the second coil 2000 are arranged as a square spiral.

[0048] In some embodiments, the transmitting module 10 includes a first PCB board 104, and the first coil 1020 is arranged on the surface of the first PCB board 104 facing the socket 2, and the signal is transmitted through the circuit on the first PCB board 104. The receiving module 20 includes a second PCB board 204, and the second coil 2000 is arranged on the surface of the second PCB board 204 facing the plug 1, and the signal is transmitted through the circuit on the second PCB board 204. When the plug 1 and the socket 2 are connected, the first coil 1020 and the second coil 2000 are close to each other, which can effectively improve the efficiency of energy transmission. Optionally, the first coil 1020 and the second coil 2000 are made of leads of corresponding PCB boards.

[0049] like Figure 3 As shown, the transmitting module 10 includes a first capacitor 1021 electrically connected to the first coil 1020, and the first coil 1020 and the first capacitor 1021 form a first LC resonant circuit. Optionally, the first capacitor 1021 and the first coil 1020 are both arranged on the first PCB board 104.

[0050] The receiving module 20 includes a second capacitor 2001 electrically connected to the second coil 2000 , and the second coil 2000 and the second capacitor 2001 form a second LC resonant circuit. Optionally, the second capacitor 2001 and the second coil 2000 are both disposed on the second PCB board 204 .

[0051] Optionally, the first LC resonant circuit formed by the first coil 1020 and the first capacitor 1021 has the same resonant frequency as the second LC resonant circuit formed by the second coil 2000 and the second capacitor 2001, thereby ensuring the efficiency of energy transmission. Optionally, the resonant frequency is 6.78 MHz.

[0052] The transmitting module 10 and the receiving module 20 respectively include a first magnetic shielding sheet 103 and a second magnetic shielding sheet 203, both of which are made of magnetic conductive materials, such as ferrite materials. On the one hand, the first magnetic shielding sheet 103 and the second magnetic shielding sheet 203 can reduce the influence of the magnetic field generated by the first coil 1020 and the second coil 2000 on the transmitting module 10 and other components in the receiving module 20; on the other hand, the first magnetic shielding sheet 103 and the second magnetic shielding sheet 203 can increase the self-inductance of the first coil 1020 and the second coil 2000, thereby increasing the transmission distance.

[0053] Optionally, the thickness of the first magnetic isolation sheet 103 and the second magnetic isolation sheet 203 ranges from 0.1 mm to 0.5 mm. Within this thickness range, it is not easy to be magnetically saturated due to being too thin, thereby reducing the magnetic isolation effect. At the same time, it will not take up too much space due to being too thick, thereby making the aviation plug too heavy.

[0054] Optionally, the first magnetic isolation sheet 103 is disposed on the surface of the first PCB board 104 away from the first coil 1020, and the second magnetic isolation sheet 203 is disposed on the surface of the second PCB board 204 away from the second coil 2000, so as to facilitate the overall installation of the magnetic isolation sheet and the PCB board connected thereto.

[0055] In some embodiments, the projection of the first coil 1020 on the first magnetic isolation sheet 103 does not exceed the outer edge of the first magnetic isolation sheet 103, and the projection of the second coil 2000 on the second magnetic isolation sheet 203 does not exceed the outer edge of the second magnetic isolation sheet 203, thereby more effectively improving the magnetic isolation effect of the magnetic isolation sheet, reducing the influence of the magnetic field generated by the coil on other devices, and increasing the self-inductance of the coil.

[0056] Optionally, the first coil 1020 and the second coil 2000 have the same shape and size, and the projections of the first coil 1020 and the second coil 2000 along the length direction of the aviation plug overlap each other. As a feasible example, the line width of the first coil 1020 and the second coil 2000 is 0.5 mm, the line spacing is 0.5 mm, and each coil has 8 turns.

[0057] like Figure 2 and Figure 3 As shown, the transmitting module 10 includes a third PCB board 105, a power amplifier module 101 disposed on the third PCB board 105, and a power conversion module 100 electrically connected to the power amplifier module 101. The third PCB board 105 and the first PCB board 104 are separated by the first magnetic isolation sheet 103, thereby effectively reducing the influence of the first coil 1020 on the power conversion module 100 and the power amplifier module 101; optionally, the first PCB board 104 and the third PCB board 105 are respectively attached to both sides of the first magnetic isolation sheet 103, and are both located inside the first housing 11. Further optionally, the power conversion module 100 and the power amplifier module 101 are disposed on the surface of the third PCB board 105 away from the first PCB board 104.

[0058] The power conversion module 100 is a built-in power adapter that can reduce 220V AC power to the required DC voltage. The power conversion module 100 supplies power to the power amplifier module 101 and also serves as the input power for the entire system. The power amplifier module 101 can convert DC voltage and current into AC voltage and current, thereby causing the first coil 1020 to generate an alternating magnetic field.

[0059] In some embodiments, the power amplifier module 101 further includes a full-bridge Class D power amplifier (Class D) and a square wave signal generating circuit electrically connected thereto; further, the Class D power amplifier circuit includes a half-bridge driver chip and a MOS tube. Optionally, a half-bridge driver chip circuit plus two MOS tubes form a half-bridge Class D power amplifier, and two half-bridge Class D power amplifier circuits are connected together to form a full-bridge Class D power amplifier.

[0060] The receiving module 20 includes a fourth PCB board 205 and a rectifier module 201 and a voltage stabilizing module 202 both arranged on the fourth PCB board 205. The rectifier module 201 and the voltage stabilizing module 202 are electrically connected. The fourth PCB board 205 and the second PCB board 204 are separated by the second magnetic isolation sheet 203, thereby effectively reducing the influence of the second coil 2000 on the rectifier module 201 and the voltage stabilizing module 202; optionally, the second PCB board 204 and the fourth PCB board 204 are attached and connected to both sides of the second magnetic isolation sheet 203, and are both located inside the second housing 21. Further optionally, the rectifier module 201 and the voltage stabilizing module 202 are arranged on the surface of the fourth PCB board 205 away from the second PCB board 204; the rectifier module 201 can convert AC input into DC output.

[0061] In some embodiments, the outer diameter of the magnetic isolation sheet is the same as the outer diameter of the PCB board, thereby improving the magnetic isolation efficiency.

[0062] Optionally, the voltage regulator module 202 is a linear regulator (LDO) or a converter (DCDC). The efficiency of LDO is relatively low, especially when the input-output voltage difference is large, but the circuit is simple. The efficiency of DCDC is relatively high, but the circuit is more complicated than LDO.

[0063] The first housing 11 includes a first cavity 110 and a first partition 111 that seals the opening of the first cavity 110 toward the second housing 21. The first PCB board 104 is disposed on the first partition 111. In some embodiments, such as Figure 1 and Figure 2 As shown, the first PCB board 104 is disposed on the surface of the first partition 111 facing the first cavity 110; in other embodiments, as shown in FIG. Figure 6 As shown, the first PCB board 104 is arranged on the surface of the first partition 111 away from the first cavity 110. In this embodiment, the first PCB board 104 and the components arranged on the first PCB board 104 are waterproofed. The waterproof treatment method can be, for example, to arrange a waterproof coating 206 (such as 206) covering the surface circuit (including the first coil 1020) on the outside of the first PCB board 104. Figure 6 shown).

[0064] The second housing 21 includes a second cavity 210 and a second partition 211 that seals the opening of the second cavity 210 toward the first housing 11. The second PCB board 204 is disposed on the second partition 211. The second PCB board 204 can be disposed on the surface of the second partition 211 facing the second cavity 210 (e.g., Figure 1 and Figure 2As shown in FIG. 2 ), it can also be arranged on the surface of the second partition 211 away from the second cavity 210. In this case, the second PCB board 204 and the components arranged on the second PCB board 204 are all waterproofed. The waterproof treatment method can be, for example, to arrange a waterproof coating 206 (such as FIG. 206 ) on the outside of the second PCB board 204 to cover the surface circuit (including the second coil 2000) thereof. Figure 6 shown).

[0065] When the plug 1 and the socket 2 are connected, the first partition 111 and the second partition 211 are arranged opposite to and in parallel, the first PCB board 104 is arranged on the first partition 111, and the second PCB board 204 is arranged on the second partition 211. At this time, the first coil 1020 and the second coil 2000 are parallel to each other, which increases the overlapping projection area of ​​the first coil 1020 and the second coil 2000 in the direction perpendicular to the first partition 111, thereby improving the energy transmission efficiency.

[0066] In some embodiments, the first housing 11 and the second housing 21 are provided with mutually matching threads, and the plug 1 and the socket 2 are connected by threads.

[0067] In other embodiments, the first shell 11 includes a slot 112, the second shell 21 includes a claw 212, and the plug 1 and the socket 2 are snap-connected via the claw 212 and the slot 112. The number of claws can be, for example, two, three, four or more.

[0068] Through the threaded connection or the snap connection, not only can the stability of the connection between the plug 1 and the socket 2 be ensured, but also the detachable connection between the plug 1 and the socket 2 can be achieved, thereby facilitating the connection between the plug 1 and the socket 2.

[0069] The above are only specific implementations of the present invention, and any improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. An aviation plug, characterized in that: include: A plug (1) comprises a first shell (11) and a transmitting module (10) connected to the first shell (11), the transmitting module (10) comprising a first coil (1020), the first coil (1020) being arranged inside the first shell (11), or being arranged outside the first shell (11) and waterproofed; and A socket (2), comprising a second shell (21) detachably connected to the first shell (11) and a receiving module (20) connected to the second shell (21), wherein the receiving module (20) comprises a second coil (2000), and the second coil (2000) is arranged inside the second shell (21), or is arranged outside the second shell (21) and is waterproofed; When the plug (1) and the socket (2) are connected, the first coil (1020) and the second coil (2000) are arranged relative to each other to perform wireless energy transmission.

2. The aviation plug according to claim 1, characterized in that: The first coil (1020) and the second coil (2000) are both in a planar spiral shape; The transmitting module (10) comprises a first PCB board (104), and the first coil (1020) is arranged on a surface of the first PCB board (104) facing the socket (2); The receiving module (20) comprises a second PCB board (204), and the second coil (2000) is arranged on a surface of the second PCB board (204) facing the plug (1).

3. The aviation plug according to claim 2, characterized in that: The transmitting module (10) comprises a first capacitor (1021) electrically connected to the first coil (1020), and the first coil (1020) and the first capacitor (1021) form a first LC resonant circuit; The receiving module (20) comprises a second capacitor (2001) electrically connected to the second coil (2000), and the second coil (2000) and the second capacitor (2001) form a second LC resonant circuit; The resonance frequency of a first LC resonant circuit formed by the first coil (1020) and the first capacitor (1021) is the same as the resonance frequency of a second LC resonant circuit formed by the second coil (2000) and the second capacitor (2001).

4. The aviation plug according to claim 2, characterized in that: The first coil (1020) and the second coil (2000) are circular spirals or square spirals.

5. The aviation plug according to claim 2, characterized in that: The transmitting module (10) and the receiving module (20) respectively comprise a first magnetic isolation sheet (103) and a second magnetic isolation sheet (203); the first magnetic isolation sheet (103) and the second magnetic isolation sheet (203) are both made of magnetic conductive materials; The first magnetic isolation sheet (103) is arranged on a surface of the first PCB board (104) facing away from the first coil (1020); and the second magnetic isolation sheet (203) is arranged on a surface of the second PCB board (204) facing away from the second coil (2000).

6. The aviation plug according to claim 5, characterized in that: The projection of the first coil (1020) on the first magnetic isolation sheet (103) does not exceed the outer edge of the first magnetic isolation sheet (103), and the projection of the second coil (2000) on the second magnetic isolation sheet (203) does not exceed the outer edge of the second magnetic isolation sheet (203).

7. The aviation plug according to claim 5, characterized in that: The transmitting module (10) comprises a third PCB board (105), a power amplifier module (101) arranged on the third PCB board (105), and a power conversion module (100) electrically connected to the power amplifier module (101); the third PCB board (105) and the first PCB board (104) are separated by the first magnetic isolation sheet (103); The receiving module (20) comprises a fourth PCB board (205) and a rectifier module (201) and a voltage stabilizing module (202) both arranged on the fourth PCB board (205); the rectifier module (201) and the voltage stabilizing module (202) are electrically connected; and the fourth PCB board (205) and the second PCB board (204) are separated by the second magnetic isolation sheet (203).

8. The aviation plug according to claim 5, characterized in that: The thickness of the first magnetic isolation sheet (103) and the second magnetic isolation sheet (203) is 0.1 mm to 0.5 mm.

9. The aviation plug according to claim 2, characterized in that: The first housing (11) comprises a first cavity (110) and a first partition (111) sealing an opening of the first cavity (110) toward the second housing (21), and the first PCB board (104) is arranged on the first partition (111); The second housing (21) comprises a second cavity (210) and a second partition (211) sealing an opening of the second cavity (210) toward the first housing (11), and the second PCB board (204) is arranged on the second partition (211); When the plug (1) and the socket (2) are connected, the first partition (111) and the second partition (211) are arranged opposite to each other and in parallel.

10. The aviation plug according to any one of claims 1 to 9, characterized in that: The first shell (11) and the second shell (21) are provided with mutually matching threads, and the plug (1) and the socket (2) are connected via the threads.

11. The aviation plug according to any one of claims 1 to 9, characterized in that: The first shell (11) comprises a card slot (112), the second shell (21) comprises a clamping claw (212), and the plug (1) and the socket (2) are connected by clamping via the clamping claw (212) and the card slot (112).

12. The aviation plug according to any one of claims 2 to 9, characterized in that: The waterproof treatment method is to provide a waterproof coating covering the surface circuits of the first PCB board (104) and the second PCB board (204) on the outside.

Images