Lightning coupler

Abstract

The present invention relates to a lightning protection coupler and to the technical field of couplers. In the present invention, a 1 / 4 wavelength short-circuit line is installed on one of a plug pin and a recessed pin, and the 1 / 4 wavelength short-circuit line is in contact with a shell. When encountering lightning, the 1 / 4 wavelength short-circuit line short-circuits a low-frequency spectrum pulsating current induced by lightning, and the lightning current is grounded through the shell of the device and introduced into the earth, while the high-frequency signal of the input communication device transmission signal above 300Hz is in an open-circuit state, which does not affect the normal operation of the device, thereby achieving the purpose of lightning protection equipment. The present invention enables the coupler to have a lightning protection function without changing the appearance of the traditional coupler, and there is no need to install a lightning arrester on the coupler. The installation volume of the present invention is only the volume of the traditional coupler. The volume of the traditional coupler is small and can be applied to 5G filters.

Description

Technical Field

[0001] The invention relates to the technical field of couplers, in particular to a lightning protection coupler. Background Art

[0002] Lightning arrester is another important device often used to prevent communication cables from being damaged by lightning. During installation, it is usually installed on the outside of the coupler. The lightning arrester is large and long, and occupies a large space. Due to the limited installation space of the 5G filter, the traditional lightning arrester plus coupler installation structure cannot be applied to the 5G filter. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in order to overcome the problem that the traditional installation structure of lightning arrester plus coupler cannot be applied to 5G filters, a lightning arrester coupler is provided.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a lightning protection coupler, including a shell, wherein a male interface and a female interface are respectively provided at both ends of the shell, a pin is provided in the male interface, a concave pin is provided in the female interface, the pin and the concave pin are connected, and an SMA interface is also provided on the shell, a 1 / 4 wavelength short-circuit line is contact-installed on one of the pin and the concave pin, and the 1 / 4 wavelength short-circuit line is contact-connected with the shell.

[0005] The lightning protection coupler of the present invention has a 1 / 4 wavelength short-circuit line installed on one of the pin and the recessed pin. The 1 / 4 wavelength short-circuit line is in contact with the shell. When encountering lightning, the 1 / 4 wavelength short-circuit line short-circuits the low-frequency spectrum pulsating current induced by lightning, and the lightning current is grounded through the shell of the device and introduced into the earth, while the high-frequency signal of the input communication device transmission signal above 300Hz is in an open-circuit state, which does not affect the normal operation of the equipment, thereby achieving the purpose of lightning protection equipment. The present invention enables the coupler to have a lightning protection function without changing the appearance of the traditional coupler, and there is no need to install a lightning arrester on the coupler. The installation volume of the present invention is only the volume of the traditional coupler. The volume of the traditional coupler is small and can be applied to 5G filters.

[0006] In order to better protect the equipment, it is necessary to protect both the male interface and the SMA interface. The 1 / 4 wavelength short-circuit line is located between the SMA interface and the female interface. Both the male interface and the SMA interface are located at the rear end of the 1 / 4 wavelength short-circuit line. The lightning current will not conduct the male interface and the SMA interface, which can better protect the equipment.

[0007] Furthermore, the 1 / 4 wavelength short-circuit line includes a copper sheet, which connects one of the pin and the concave pin with the shell, and a guide channel for transmitting lightning current from one of the pin and the concave pin to the shell is opened on the copper sheet, and the total length of the guide channel in the extension direction is equal to 1 / 4 wavelength.

[0008] Since the pins or concave pins in the coupler are coaxially arranged with the shell, the straight-line distance from the pins or concave pins to the shell is small. In order to open a guide channel that meets the length requirement on a copper sheet with a smaller area, the copper sheet is in the shape of a ring. The copper sheet is sleeved on the concave pin, the inner end of the copper sheet contacts the concave pin, and the outer end contacts the shell. The guide channel is coaxially arranged on the copper sheet in a spiral line shape.

[0009] In order to make the outer end of the copper sheet always contact with the shell, the inner cavity of the shell is a stepped hole, a limit ring is coaxially inserted in the large hole of the stepped hole, the copper sheet is clamped between the stepped surface and the limit ring, a limit plate is coaxially fixedly installed on the concave pin, and the limit ring is clamped between the copper sheet and the limit plate. After the pin and the concave pin are connected, the copper sheet can always contact with the stepped surface under the action of the limit ring and the limit plate.

[0010] In order to make the inner end of the copper sheet always contact with the concave pin, a circular opening is coaxially opened at one end of the concave pin, and the copper sheet is located in the circular opening. The copper sheet is clamped between the plug pin and the concave pin. After the plug pin and the concave pin are connected, the copper sheet can always contact with the concave pin under the action of the plug pin.

[0011] The insertion pin and the recessed pin are detachably connected. The detachable connection here can be a threaded connection or a snap connection, preferably a threaded connection.

[0012] In order to facilitate the connection between the concave pin and the device connector, a front shell is installed in the female interface, and the front shell is coaxially arranged with the concave pin. The front shell can be installed between the limit plate and the shell in an interference fit manner.

[0013] The beneficial effects of the present invention are as follows: the lightning protection coupler of the present invention has a 1 / 4 wavelength short-circuit line installed on one of the pin and the recessed pin, and the 1 / 4 wavelength short-circuit line is in contact with the shell. When encountering lightning, the 1 / 4 wavelength short-circuit line will short-circuit the low-frequency spectrum pulsating current induced by lightning, and the lightning current will be grounded through the shell of the device and introduced into the earth, while the high-frequency signal of the input communication device transmission signal above 300Hz will be in an open-circuit state, which will not affect the normal operation of the equipment, thereby achieving the purpose of lightning protection equipment. The present invention enables the coupler to have a lightning protection function without changing the appearance of the traditional coupler, and there is no need to install a lightning arrester on the coupler. The installation volume of the present invention is only the volume of the traditional coupler. The volume of the traditional coupler is small and can be applied to 5G filters. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 is a top view of the present invention;

[0017] Figure 3 The present invention Figure 2 Sectional view at AA in the middle;

[0018] Figure 4 is a three-dimensional schematic diagram of the copper sheet in the present invention;

[0019] Figure 5 It is a front view of the copper sheet in the present invention.

[0020] In the figure: 1. Shell, 2. Male connector, 3. Female connector, 4. Pin, 5. Recessed pin, 6. SMA connector, 7. 1 / 4 wavelength short-circuit line, 7-1. Copper sheet, 7-2. Guide channel, 8. Limiting ring, 9. Limiting plate, 10. Front shell. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0022] like Figure 1 and Figure 2 A lightning protection coupler shown includes a housing 1, a male interface 2 and a female interface 3 are respectively provided at both ends of the housing 1, a pin 4 is provided in the male interface 2, a concave pin 5 is provided in the female interface 3, and the pin 4 and the concave pin 5 are detachably connected. The card detachable connection here can be a threaded connection or a card connection, preferably a threaded connection. An SMA interface 6 is also provided on the housing 1, and a 1 / 4 wavelength short-circuit line 7 is installed in contact with one of the pin 4 and the concave pin 5, and the 1 / 4 wavelength short-circuit line 7 is in contact with the housing 1. The 1 / 4 wavelength short-circuit line 7 can be installed on the pin 4 or on the concave pin 5. In order to better protect the equipment, the male interface 2 and the SMA interface 6 need to be protected at the same time, and the 1 / 4 wavelength short-circuit line 7 is located between the SMA interface 6 and the female interface 3. The male interface 2 and the SMA interface 6 are both located at the rear end of the 1 / 4 wavelength short-circuit line 7, and the lightning current will not conduct the male interface 2 and the SMA interface 6, which can better protect the equipment. Accordingly, the 1 / 4 wavelength short-circuit line 7 can be installed on the concave pin 5.

[0023] The 1 / 4 wavelength short-circuit line 7 includes a copper sheet 7-1, which connects one of the two concave needles 5 and the housing 1. The copper sheet 7-1 is provided with a guide channel 7-2 for transmitting lightning current from one of the pins 4 and the concave needle 5 to the housing 1. The total length of the guide channel 7-2 in the extension direction is equal to 1 / 4 wavelength.

[0024] The shape of the copper sheet 7-1 is annular. Figure 4 and Figure 5 As shown, the copper sheet 7-1 is sleeved on the concave needle 5, the inner end of the copper sheet 7-1 contacts the concave needle 5, and the outer end contacts the outer shell 1. The guide channel 7-2 is coaxially arranged on the copper sheet 7-1 in a spiral line shape. The inner end of the copper sheet 7-1 refers to the end where the inner circumferential surface of the annular copper sheet 7-1 is located, and the outer end of the copper sheet 7-1 refers to the end where the outer circumferential surface of the annular copper sheet 7-1 is located.

[0025] The inner cavity of the housing 1 is a stepped hole, and a limiting ring 8 is coaxially inserted into the large hole of the stepped hole. The copper sheet 7-1 is clamped between the stepped surface and the limiting ring 8. Figure 3 As shown, a limit plate 9 is coaxially fixedly installed on the concave pin 5, and a limit ring 8 is clamped between the copper sheet 7-1 and the limit plate 9. After the pin 4 and the concave pin 5 are connected, the copper sheet 7-1 can always contact the stepped surface under the action of the limit ring 8 and the limit plate 9; in order to increase the contact area between the outer end of the copper sheet 7-1 and the housing 1, the outer circumferential surface of the copper sheet 7-1 can fit the inner wall of the housing 1.

[0026] An annular opening is coaxially formed at one end of the concave needle 5, and the copper sheet 7-1 is located in the annular opening. The copper sheet 7-1 is clamped between the plug pin 4 and the concave needle 5. After the plug pin 4 and the concave needle 5 are connected, the copper sheet 7-1 can always be in contact with the concave needle 5 under the action of the plug pin 4. In order to increase the contact area between the inner end of the copper sheet 7-1 and the concave needle 5, the inner circumference of the copper sheet 7-1 can be fitted with the outer circumference of the concave needle 5.

[0027] A front housing 10 is installed in the female connector 3, and the front housing 10 is coaxially arranged with the concave pin 5. The front housing 10 can be installed between the limiting plate 9 and the housing 1 in an interference fit manner.

[0028] The lightning protection coupler of the present invention has a 1 / 4 wavelength short-circuit line 7 installed on one of the pin 4 and the recessed pin 5. The 1 / 4 wavelength short-circuit line 7 is in contact with the housing 1. When lightning occurs, the lightning current flows from the recessed pin 5 to the inner end of the copper sheet 7-1, and then passes through the 1 / 4 wavelength guide channel 7-2. The 1 / 4 wavelength short-circuit line short-circuits the low-frequency spectrum pulsating current induced by the lightning. The lightning current passes through the outer end of the copper sheet 7-1 and is grounded through the housing 1 to the earth, while the high-frequency signal of the input communication device transmission signal above 300Hz is in an open-circuit state, which does not affect the normal operation of the device, thereby achieving the purpose of lightning protection equipment. The present invention enables the coupler to have a lightning protection function without changing the appearance of the traditional coupler, and there is no need to install a lightning arrester on the coupler. The installation volume of the present invention is only the volume of the traditional coupler. The volume of the traditional coupler is small and can be applied to 5G filters.

[0029] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A lightning protection coupler, comprising a housing (1), wherein two ends of the housing (1) are respectively provided with a male interface (2) and a female interface (3), wherein a plug pin (4) is provided in the male interface (2), and a concave pin (5) is provided in the female interface (3), wherein the plug pin (4) and the concave pin (5) are connected, and an SMA interface (6) is further provided on the housing (1), characterized in that: A 1 / 4 wavelength short-circuit line (7) is installed in contact with one of the plug pin (4) and the recessed pin (5), and the 1 / 4 wavelength short-circuit line (7) is in contact with and connected to the housing (1); The 1 / 4 wavelength short-circuit line (7) is located between the SMA interface (6) and the female connector interface (3); The 1 / 4 wavelength short-circuit line (7) comprises a copper sheet (7-1), the copper sheet (7-1) connects one of the plug pin (4) and the recessed pin (5) with the housing (1), and the copper sheet (7-1) is provided with a guide channel (7-2) for transmitting lightning current from one of the plug pin (4) and the recessed pin (5) to the housing (1), and the total length of the guide channel (7-2) in the extension direction is equal to 1 / 4 wavelength; An annular opening is coaxially formed at one end of the concave needle (5), the copper sheet (7-1) is located in the annular opening, and the copper sheet (7-1) is clamped between the plug pin (4) and the concave needle (5).

2. The lightning protection coupler according to claim 1, characterized in that: The copper sheet (7-1) is annular in shape and is sleeved on the concave needle (5). The inner end of the copper sheet (7-1) contacts the concave needle (5) and the outer end contacts the outer shell (1). The flow guide channel (7-2) is coaxially arranged on the copper sheet (7-1) in a spiral line shape.

3. The lightning protection coupler according to claim 2, characterized in that: The inner cavity of the shell (1) is a stepped hole, a limit ring (8) is coaxially inserted in the large hole of the stepped hole, the copper sheet (7-1) is clamped between the stepped surface and the limit ring (8), a limit plate (9) is coaxially fixedly installed on the concave needle (5), and the limit ring (8) is clamped between the copper sheet (7-1) and the limit plate (9).

4. The lightning protection coupler according to claim 1, characterized in that: The insertion pin (4) and the recessed pin (5) are detachably connected.

5. The lightning protection coupler according to claim 1, characterized in that: A front shell (10) is installed in the female interface (3), and the front shell (10) is coaxially arranged with the concave needle (5).

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