Electromagnetic pulse suppression device

Abstract

The utility model discloses an electromagnetic pulse suppression device, which comprises a shell, one end of the shell is provided with an N-type connector, the other end of the shell is provided with a cable welding mechanism, inner conductors of the N-type connector and the cable welding mechanism are both connected with one pole of a discharge tube, the discharge tube is arranged in the shell, the other pole of the discharge tube is connected with the shell, and the N-type connector is connected with the cable welding mechanism. The surface of the housing is provided with a grounding terminal. The beneficial effects of the utility model are that the discharge tube is arranged in the housing, when the external voltage exceeds the breakdown voltage of the gas discharge tube, the gas is ionized, the discharge tube begins to discharge, and the high-resistance state is changed into the low-resistance state, so that the voltage at the two ends of the electrode does not exceed the breakdown voltage, thereby effectively protecting a post-stage circuit from being damaged by overvoltage; the N-type connector and the inner conductor of the cable welding mechanism are directly connected with one electrode of the discharge tube, so that the insertion loss is reduced, and the equipment size is reduced at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic pulse protection, in particular to an electromagnetic pulse suppression device. Background Art

[0002] Conventional antenna surge protectors all consist of connectors at both ends and a cavity. When in use, a connector plug must be connected in series on the cable, making the entire product relatively large and requiring a large installation space. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an electromagnetic pulse suppression device.

[0004] The purpose of the utility model is achieved through the following technical solution: an electromagnetic pulse suppression device, including a shell, one end of the shell is provided with an N-type connector, the other end of the shell is provided with a cable welding mechanism, the inner conductors of the N-type connector and the cable welding mechanism are both connected to one pole of a discharge tube, the discharge tube is arranged in the shell, and the other pole of the discharge tube is connected to the shell, and a grounding terminal is provided on the surface of the shell.

[0005] Preferably, the cable welding mechanism includes a screw sleeve, a bushing and an insulator, the insulator is arranged in the bushing, the bushing is arranged in the screw sleeve, and a through hole is opened on the surface of the bushing. The insulator is sleeved on the inner conductor of the cable, the steel belt of the cable is soldered to the bushing through the through hole, and the screw sleeve is installed at one end of the shell.

[0006] Preferably, a step is provided on the surface of the screw sleeve, and a sealing ring is provided on the step.

[0007] Preferably, a groove is provided on the outer end side of the screw sleeve.

[0008] The utility model has the following advantages: the utility model provides a discharge tube in the shell. When the external voltage exceeds the breakdown voltage of the gas discharge tube, the gas is ionized, the discharge tube starts to discharge, and changes from a high-resistance state to a low-resistance state, so that the voltage across the electrodes does not exceed the breakdown voltage, thereby effectively protecting the subsequent circuit from damage due to overvoltage. Since the inner conductors of the N-type connector and the cable welding mechanism are directly connected to one electrode of the discharge tube, the insertion loss is reduced while the volume of the device is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the electromagnetic pulse suppression device;

[0010] Figure 2 This is a structural diagram of the explosion of the cable welding mechanism;

[0011] Figure 3 This is a structural diagram of cable welding;

[0012] Figure 4 It is a schematic structural diagram of the working principle of an electromagnetic pulse suppression device;

[0013] In the figure, 1 - cable, 2 - sealing ring, 3 - groove, 4 - step, 5 - screw sleeve, 6 - bushing, 7 - through hole, 8 - insulator, 9 - N-type connector, 10 - grounding end, 11 - housing. Specific embodiments

[0014] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0016] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0017] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present utility model is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] In this embodiment, as Figure 1 and Figure 4 shown, an electromagnetic pulse suppression device includes a housing 11. An N-type connector 9 is arranged at one end of the housing 11, and a cable welding mechanism is arranged at the other end of the housing 11. The inner conductors of the N-type connector 9 and the cable welding mechanism are both connected to one pole of a discharge tube. The discharge tube is arranged inside the housing 11, and the other pole of the discharge tube is connected to the housing 11. A grounding terminal 10 is arranged on the surface of the housing 11. Further, as Figure 2 and Figure 3 shown, the cable welding mechanism includes a bushing 5, a sleeve 6, and an insulator 8. The insulator 8 is arranged inside the sleeve 6, the sleeve 6 is arranged inside the bushing 5, and a through hole 7 is formed on the surface of the sleeve 6. The insulator 8 is sleeved on the inner conductor of the cable 1, and the steel strip of the cable 1 is soldered to the sleeve 6 through the through hole 7. The bushing 5 is installed at one end of the housing 11. Still further, a step 4 is formed on the surface of the bushing 5, and a sealing ring 2 is arranged on the step 4. Preferably, a groove 3 is arranged on the outer side surface of the bushing 5. Specifically, the main function of the groove 3 is to facilitate the installation of the bushing 5 on the housing 11 by the staff. By arranging a discharge tube inside the housing 11, when the external voltage exceeds the breakdown voltage of the gas discharge tube, the gas is ionized, and the discharge tube starts to discharge, changing from a high-resistance state to a low-resistance state. Since the other pole of the discharge tube is connected to the housing 11, and the grounding terminal 10 is arranged on the surface of the housing 11, grounding is thus carried out to form a discharge loop, so that the voltage across the electrodes does not exceed the breakdown voltage, effectively protecting the subsequent circuit from overvoltage damage. When the surge disappears, the discharge tube returns to the high-resistance state. Since the inner conductors of the N-type connector 9 and the cable welding mechanism are both directly connected to one pole of the discharge tube, the insertion loss is reduced and the volume of the device is also reduced. It can be directly connected in series in the coaxial cable between the antenna and the device, or directly installed at the bottom of the antenna base. At the same time, the housing 11 has good electrical conductivity and can ground the surge transient overvoltage / overcurrent through the housing 11. In this embodiment, the N-type connector 9 and the discharge tube are both existing products, and no improvement is made to them here, so no further description will be given.

[0021] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An electromagnetic pulse suppression device, characterized in that: It includes a housing (11), one end of the housing (11) is provided with an N-type connector (9), the other end of the housing (11) is provided with a cable welding mechanism, the inner conductors of the N-type connector (9) and the cable welding mechanism are both connected to one pole of a discharge tube, the discharge tube is arranged inside the housing (11), and the other pole of the discharge tube is connected to the housing (11), and a grounding terminal (10) is arranged on the surface of the housing (11).

2. The electromagnetic pulse suppression device according to claim 1, characterized in that: The cable welding mechanism includes a screw sleeve (5), a bushing (6) and an insulator (8). The insulator (8) is arranged inside the bushing (6), the bushing (6) is arranged inside the screw sleeve (5), and a through hole (7) is formed on the surface of the bushing (6). The insulator (8) is sleeved on the inner conductor of the cable (1), and the steel strip of the cable (1) is soldered to the bushing (6) through the through hole (7). The screw sleeve (5) is installed at one end of the housing (11).

3. The electromagnetic pulse suppression device according to claim 2, characterized in that: A step (4) is formed on the surface of the screw sleeve (5), and a sealing ring (2) is arranged on the step (4).

4. The electromagnetic pulse suppression device according to claim 3, wherein: A groove (3) is arranged on the outer end side surface of the screw sleeve (5).

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