Lightning arrester for satellite antenna

Abstract

The utility model discloses a lightning arrester for a satellite antenna. The lightning arrester comprises a base and a plug connector. A left terminal set, a right terminal set and an alarm transmitter are installed in an inner cavity of the base, the alarm transmitter is provided with an automatic power-on switch, a plug connector is connected with the base in an inserted and buckled mode, and an on-off mechanism capable of electrically conducting the left terminal set and the right terminal set is arranged in the plug connector. The on-off mechanism is provided with a telescopic structure which can enter the base and abut against the automatic power-on switch so as to disconnect the alarm transmitter, and the on-off mechanism is provided with a fuse which can electrically conduct the left terminal set and the right terminal set. According to the lightning arrester of the utility model, the fuse is arranged on the conductive column, and instantly passing large current can burn out the fuse, thereby achieving the purpose of lightning protection. According to the lightning arrester, the conductive column is raised through the elastic force of the spring, so that the alarm transmitter conducts a circuit, and then the alarm transmitter transmits an alarm signal to a terminal.

Description

Technical Field

[0001] The utility model relates to a lightning protection device, in particular to a lightning protection device used for a satellite antenna. Background Art

[0002] In order to achieve good reception, outdoor satellite receiving antennas are often installed at high places, such as roofs, tops of pillars, or open and unobstructed places. This makes satellite receiving antennas vulnerable to lightning strikes. Once struck by lightning, the lightning overvoltage and lightning current will enter the room through the cable, which may not only damage the receiver and other electrical equipment connected to it, but also cause fire and personal injury. With the increasing popularity of direct-to-home satellite TV receiving systems, lightning protection has become an increasingly important issue. For example, the Chinese patent: "Satellite TV Ground Receiving Station Power Supply Automatic Control Device (CN2332113Y)" consists of a shell and a circuit board. There are three working status indicating light-emitting tubes on the panel of the shell, and there are input power terminals and power output terminals and manual or automatic selection switches on the back panel of the shell.

[0003] The traditional lightning protection method is to use grounding to avoid lightning. The antenna body and cable are grounded before entering the room. When struck by direct lightning or induction lightning, the current can be introduced into the earth, limiting the overvoltage and reducing or eliminating the lightning strike loss. Due to the wide variety of grounding conditions in practice, the grounding impedance cannot reach the ideal value, and there are multiple grounding points. When struck by lightning, the ground potential may still rise to a dangerous value or a dangerous potential difference may occur between different grounding points.

[0004] The above-mentioned traditional lightning protection methods have a certain effect on preventing or reducing lightning strike losses, but they cannot completely eliminate the hazards of lightning strikes. In fact, another effective method is to cut off the intrusion path of lightning overvoltage and lightning current, so that there are high-voltage insulation measures between the protected equipment and the objects that may be struck by lightning. For the satellite TV receiving system, it means unplugging the cable plug connecting the outdoor satellite receiving antenna to the satellite TV receiver after watching TV every time, so that even if the antenna is struck by lightning, it will not endanger the receiver and other connected equipment. But in reality, few people do this, because they have to unplug the plug every time after watching TV, and plug it in again before watching every time, which is very inconvenient. It would be easier to unplug the plug only before the thunderstorm, but it is still inconvenient to pay attention to the weather forecast at all times. And you can't unplug the plug when thunderstorm weather occurs, which may cause people to be struck by lightning. Utility Model Content

[0005] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a lightning protection device for a satellite antenna. The purpose of designing the lightning protection device is to avoid lightning and prevent damage to antenna equipment and electrical equipment.

[0006] In order to solve the above technical problems, the utility model is implemented by the following scheme: A lightning protection device for a satellite antenna of the utility model comprises:

[0007] A base, in which a left terminal group, a right terminal group and an alarm transmitter are installed in an inner cavity, and the alarm transmitter has an automatic power-on switch;

[0008] A connector is connected to the base buckle, and the interior of the connector has an on-off mechanism that can electrically connect the left terminal group and the right terminal group. The on-off mechanism has a telescopic structure that can enter the base and press against the automatic power-on switch to disconnect the alarm transmitter, and the on-off mechanism is provided with a fuse that can electrically connect the left terminal group and the right terminal group.

[0009] Furthermore, the base is a U-shaped structural base, and its opposite sides are provided with positioning convex strips, and both sides of the connector are provided with positioning grooves, and the two positioning grooves and the two positioning convex strips cooperate to form a positioning structure.

[0010] Furthermore, the bottom surface of the socket end of the base has two first terminal sockets, one second terminal socket and a through hole;

[0011] Wherein, the two first terminal sockets are electrically connected to the alarm transmitter;

[0012] The second terminal socket is electrically connected to the left terminal group;

[0013] The through hole is directly opposite to the automatic power-on switch.

[0014] Furthermore, a rechargeable battery is installed in the inner cavity of the connector;

[0015] The plug end of the plug connector has two first plug terminals, the power output circuit of the rechargeable battery is connected to the two first plug terminals, and the two first plug terminals can be inserted into the two first terminal sockets;

[0016] The plug end of the plug connector has a second plug terminal which can be inserted into the second terminal socket to form an electrical conduction structure.

[0017] Furthermore, the right terminal on the right terminal group extends to below the through hole and the right terminal has a first through hole facing the through hole;

[0018] The inner cavity of the plug connector is provided with a sliding cavity, and the top of the shell is provided with a second through hole which is in straight line communication with the sliding cavity;

[0019] The on-off mechanism comprises:

[0020] A conductive column is arranged in the sliding cavity. The conductive column is divided into an insulating section, a thick metal section and a thin metal section from top to bottom. The waist of the thick metal section has a concave section. A through cavity is arranged in the concave section and runs through the thick metal section horizontally. The fuse is arranged in the through cavity. A step is formed at the connection between the thick metal section and the thin metal section.

[0021] The spring is sleeved on the metal thin section, one end of which abuts against the step and the other end abuts against the edge of the through hole. The conductive column and the spring form the telescopic structure.

[0022] Furthermore, the inner wall of the sliding cavity is fixed with three elastic electrodes opposite to each other, wherein two elastic electrodes are arranged opposite to each other and can clamp two ends of the fuse to form an electrical connection, and the third elastic electrode is in contact with the metal thick section;

[0023] Of the two opposite elastic electrodes, one of the elastic electrodes is electrically connected to the second plug-in terminal, and the other elastic electrode is electrically connected to the third elastic electrode.

[0024] Furthermore, the insulating section extends upward through the second via hole;

[0025] After the conductive column is pressed down, the thin metal segment can pass through the through hole and the second through hole and press the automatic power-on switch to disconnect the power supply circuit of the alarm transmitter, and the thin metal segment is electrically connected with the right terminal at the second through hole.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] 1. The utility model lightning protection device is provided with a fuse on the conductive column, and the large current passing through instantly can burn out the fuse, thereby achieving the purpose of lightning protection.

[0028] 2. The lightning protection device of the utility model raises the conductive column through the elastic force of the spring, so that the alarm transmitter conducts the circuit, and then the alarm transmitter transmits the alarm signal to the terminal.

[0029] 3. The utility model has a novel structure. Through three elastic electrodes, a fuse and a conductive column, the left terminal group and the right terminal group are connected to form a path. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is an assembly structure diagram of the lightning protection device of the utility model.

[0031] Figure 2 This is a structural diagram of the base of the utility model.

[0032] Figure 3 It is a structural diagram of the conductive column in the lightning protection device of the utility model after it is raised.

[0033] Figure 4 This is a structural diagram of the conductive column in the lightning protection device of the utility model after being pressed down.

[0034] Figure 5 It is a structural diagram of the on-off mechanism of the utility model.

[0035] Figure 6 This is a circuit connection structure diagram of three elastic electrodes, a fuse and a conductive column of the utility model.

[0036] Markings in the accompanying drawings: base 10, connector 11, U-shaped cavity 101, positioning ridge 102, through hole 103, terminal socket 104, left terminal group 105, right terminal group 106, alarm transmitter 107, rechargeable battery 111, on-off mechanism 112, second plug terminal 113, first plug terminal 114, insulating section 1121, thick metal section 1122, concave section 1123, elastic electrode 1124, fuse 1125, spring 1126, thin metal section 1127. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the utility model. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0038] Embodiment 1: The specific structure of the utility model is as follows:

[0039] Please refer to the attached Figure 1-6 The utility model provides a lightning protection device for a satellite antenna, comprising:

[0040] A base 10, in which a left terminal group 105, a right terminal group 106 and an alarm transmitter 107 are installed in the inner cavity of the base 10, and the alarm transmitter 107 has an automatic power-on switch;

[0041] The connector 11 is plug-inly connected to the base 10, and has an on-off mechanism 112 inside that can electrically connect the left terminal group 105 and the right terminal group 106. The on-off mechanism 112 has a telescopic structure that can enter the base 10 and press against the automatic power-on switch to disconnect the alarm transmitter 107, and the on-off mechanism 112 is provided with a fuse 1125 that can electrically connect the left terminal group 105 and the right terminal group 106.

[0042] A preferred technical solution of this embodiment: the base 10 is a U-shaped structural base, and the opposite sides of its U-shaped cavity 101 have positioning ridges 102, and both sides of the connector 11 are provided with positioning grooves, and the two positioning grooves and the two positioning ridges 102 cooperate to form a positioning structure.

[0043] A preferred technical solution of this embodiment: the bottom surface of the socket end of the base 10 has two first terminal sockets 104, a second terminal socket 108 and a through hole 103;

[0044] Wherein, the two first terminal sockets 104 are electrically connected to the alarm transmitter 107;

[0045] The second terminal socket 108 is electrically connected to the left terminal group 105;

[0046] The through hole 103 is directly opposite to the automatic power-on switch.

[0047] A preferred technical solution of this embodiment: a rechargeable battery 111 is installed in the inner cavity of the plug connector 11;

[0048] The plug end of the plug connector 11 has two first plug terminals 114 , the power output circuit of the rechargeable battery 111 is connected to the two first plug terminals 114 , and the two first plug terminals 114 can be inserted into the two first terminal sockets 104 ;

[0049] The plug end of the plug connector 11 has a second plug terminal 113 that can be inserted into the second terminal socket 108 to form an electrical conduction structure.

[0050] A preferred technical solution of this embodiment: the right terminal on the right terminal group 106 extends to below the through hole 103 and the right terminal has a first through hole facing the through hole 103;

[0051] The inner cavity of the plug connector 11 is provided with a sliding cavity, and the top of the shell is provided with a second through hole which is in straight line communication with the sliding cavity;

[0052] The on-off mechanism 112 includes:

[0053] A conductive column is arranged in the sliding cavity. The conductive column is divided into an insulating section 1121, a thick metal section 1122 and a thin metal section 1127 from top to bottom. The waist of the thick metal section 1122 has a concave section 1123. The concave section 1123 is provided with a through cavity that transversely penetrates the thick metal section 1122. The fuse 1125 is arranged in the through cavity. The connection between the thick metal section 1122 and the thin metal section 1127 forms a step.

[0054] The spring 1126 is sleeved on the metal segment 1127 , with one end thereof abutting against the step and the other end abutting against the edge of the through hole 103 . The conductive column and the spring 1126 form the telescopic structure.

[0055] A preferred technical solution of this embodiment: three elastic electrodes 1124 are fixed opposite to each other on the inner wall of the sliding cavity, wherein two elastic electrodes 1124 are arranged opposite to each other and can clamp the two ends of the fuse 1125 to form an electrical connection, and the third elastic electrode 1124 is in contact with the metal thick section 1122;

[0056] Of the two opposite elastic electrodes 1124 , one of the elastic electrodes 1124 is electrically connected to the second plug-in terminal 113 , and the other elastic electrode 1124 is electrically connected to the third elastic electrode 1124 .

[0057] A preferred technical solution of this embodiment: the insulating segment 1121 extends upward through the second via hole;

[0058] After the conductive column is pressed down, the metal segment 1127 can pass through the through hole and the second via hole and press the automatic power-on switch to disconnect the power supply circuit of the alarm transmitter 107. The metal segment 1127 is electrically connected to the right terminal at the second via hole.

[0059] Embodiment 2:

[0060] The following is the working principle of the utility model lightning protection device:

[0061] like Figure 1-6 As shown, Figure 4 The metal segment 1127 passes through the through hole 103 and the first through hole, and its lower end presses down the automatic power switch of the alarm transmitter 107. After the automatic power switch is pressed, the circuit of the alarm transmitter 107 is disconnected, and the alarm transmitter 107 will not send an alarm signal to the outside.

[0062] Figure 4 In the embodiment, since the conductive column is in a downward pressure state, the lightning protection device conducts the circuit of the entire satellite antenna. In order to distinguish the three elastic electrodes 1124, the three elastic electrodes 1124 are respectively set as a first elastic electrode, a second elastic electrode, and a third elastic electrode. The first elastic electrode and the second elastic electrode are arranged oppositely, and the third elastic electrode is in contact with the metal thick section 1122, and the third elastic electrode is electrically connected to the second elastic electrode.

[0063] When the satellite antenna device is struck by lightning, the large current generated by the lightning will sequentially pass through the right terminal group 106, the metal thin segment 1127, the metal thick segment 1122, the third elastic electrode, the second elastic electrode, and the fuse 1125, and the fuse 1125 will break instantly after the large current. However, the elastic force of the first elastic electrode and the second elastic electrode is not enough to support the broken fuse 1125, and the spring 1126 pushes the conductive column upward, so that the metal thin segment 1127 retracts into the inner cavity of the connector 11. The metal thin segment 1127 does not contact the right terminal, so the left terminal group 105 and the right terminal group 106 are disconnected, and the lightning protection device does not conduct the circuit.

[0064] like Figure 3 As shown, since the conductive column is away from the automatic power switch, the automatic power switch turns on the circuit of the alarm transmitter 107. Since the alarm transmitter 107 is powered by the rechargeable battery 111, the disconnection of the lightning protection device does not affect the operation of the alarm transmitter 107.

[0065] The alarm transmitter 107 sends the fault signal of the lightning protection device to the terminal, and the backstage personnel replace the fuse according to the terminal information. After the fuse is installed, the first elastic electrode and the second elastic electrode are clamped at both ends of the fuse by pressing down the conductive column. At this time, the alarm transmitter 107 stops sending signals.

[0066] In summary, the lightning protection device of the utility model is provided with a fuse 1125 on the conductive column, and the large current passing through instantly can burn out the fuse 1125, thereby achieving the purpose of lightning protection. The lightning protection device of the utility model raises the conductive column through the elastic force of the spring 1126, so that the alarm transmitter conducts the circuit, and then the alarm transmitter transmits the alarm signal to the terminal. The utility model has a novel structure, and through three elastic electrodes, a fuse 1125, and a conductive column, the circuit of the left terminal group 105 and the right terminal group 106 is conducted, thereby forming a path.

[0067] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A lightning protection device for a satellite antenna, characterized in that: include: A base (10), wherein a left terminal group (105), a right terminal group (106) and an alarm transmitter (107) are installed in an inner cavity of the base (10), wherein the alarm transmitter (107) has an automatic power-on switch; A plug connector (11) is plug-in-connected to the base (10), and the plug connector (11) has an on-off mechanism (112) inside that can electrically connect the left terminal group (105) and the right terminal group (106), and the on-off mechanism (112) has a telescopic structure that can enter the base (10) and press against the automatic power-on switch to disconnect the alarm transmitter (107), and the on-off mechanism (112) is provided with a fuse (1125) that can electrically connect the left terminal group (105) and the right terminal group (106).

2. A lightning protection device for a satellite antenna according to claim 1, characterized in that: The base (10) is a U-shaped structural base, and its opposite sides are provided with positioning convex strips (102). Both sides of the connector (11) are provided with positioning grooves, and the two positioning grooves and the two positioning convex strips (102) cooperate to form a positioning structure.

3. A lightning protection device for a satellite antenna according to claim 1, characterized in that: The bottom surface of the socket end of the base (10) is provided with two first terminal sockets (104), a second terminal socket (108) and a through hole (103); Wherein, the two first terminal sockets (104) are electrically connected to the alarm transmitter (107); The second terminal socket (108) is electrically connected to the left terminal group (105); The through hole (103) is directly opposite to the automatic power-on switch.

4. A lightning protection device for a satellite antenna according to claim 3, characterized in that: A rechargeable battery (111) is installed in the inner cavity of the plug connector (11); The plug end of the plug connector (11) has two first plug terminals (114), the power output circuit of the rechargeable battery (111) is connected to the two first plug terminals (114), and the two first plug terminals (114) can be inserted into the two first terminal sockets (104); The plug end of the plug connector (11) has a second plug terminal (113) which can be inserted into the second terminal socket (108) to form an electrical conduction structure.

5. A lightning protection device for a satellite antenna according to claim 4, characterized in that: The right terminal on the right terminal group (106) extends to below the through hole (103) and has a first through hole directly facing the through hole (103); The inner cavity of the plug connector (11) is provided with a sliding cavity, and the top of the shell is provided with a second through hole which is in straight line communication with the sliding cavity; The on-off mechanism (112) comprises: A conductive column is arranged in the sliding cavity. The conductive column is divided from top to bottom into an insulating section (1121), a thick metal section (1122) and a thin metal section (1127). The waist of the thick metal section (1122) has an inward concave section (1123). The inward concave section (1123) is provided with a through cavity that transversely penetrates the thick metal section (1122). The fuse (1125) is inserted into the through cavity. A step is formed at the connection between the thick metal section (1122) and the thin metal section (1127). The spring (1126) is sleeved on the metal thin segment (1127), one end of which abuts against the step, and the other end abuts against the edge of the through hole (103), and the conductive column and the spring (1126) form the telescopic structure.

6. A lightning protection device for a satellite antenna according to claim 5, characterized in that: The inner wall of the sliding cavity is fixed with three elastic electrodes (1124) facing each other, wherein two elastic electrodes (1124) are arranged opposite to each other and can clamp two ends of the fuse (1125) to form an electrical connection, and the third elastic electrode (1124) is in contact connection with the metal thick section (1122); Of the two opposing elastic electrodes (1124), one of the elastic electrodes (1124) is electrically connected to the second plug-in terminal (113), and the other elastic electrode (1124) is electrically connected to the third elastic electrode (1124).

7. A lightning protection device for a satellite antenna according to claim 6, characterized in that: The insulating section (1121) extends upward through the second via hole; After the conductive column is pressed down, the metal segment (1127) can pass through the through hole and the second through hole and press the automatic power-on switch to disconnect the power supply circuit of the alarm transmitter (107), and the metal segment (1127) is electrically connected to the right terminal at the second through hole in a contact manner.

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