Lightning arrester

Abstract

The utility model relates to the field of protectors, in particular to a lightning arrester. Which comprises a shell which comprises an input terminal and an output terminal, and is characterized by further comprising a piezoresistor which is arranged in the shell and comprises a first terminal and a second terminal; the tripping component is arranged in the shell in a sliding manner, the tripping component is provided with a first connecting sheet which is welded with the first terminal at a low temperature and a second connecting sheet which is electrically connected with the input terminal, and a spring is arranged between one end surface of the tripping component and the inner wall of the shell; the visual window is formed in the shell and located at the end, opposite to the spring, of the tripping component; the identification plate is hinged to the inner wall of the shell, is arranged between the visual window and the tripping component and can be pushed away by the tripping component; according to the utility model, the working state of the lightning arrester is expressed in a mechanism linkage mode, and the lightning arrester has higher working stability compared with an electronic indicating lamp.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of protectors, in particular to a kind of lightning arrestor. BACKGROUND

[0002] Surge protectors generally include a normal operating state, an overvoltage state, and a tripped state. In the normal operating state, the varistor is in a high resistance state and does not affect the normal operation of the circuit in which it is located. The resistance value remains at a high level within a set voltage range. When the circuit is subjected to a sudden overvoltage, such as a lightning strike or power system failure, the voltage rises sharply, and when the line voltage exceeds the threshold voltage (also known as the rated voltage), the surge protector enters the overvoltage state. Once the voltage of the line exceeds the rated voltage of the varistor, the resistance begins to change.

[0003] A low temperature solder joint is typically provided in the surge protector, so that the low temperature solder joint can melt to cause the surge protector to trip when the surge protection component deteriorates to a certain extent.

[0004] In the prior art, the color of the indicator light is usually used to represent the state of the surge protector. If the indicator light fails electrically, it cannot work normally.

[0005] Therefore, there is an urgent need to provide an improved technical solution to solve the above technical problems. SUMMARY

[0006] The utility model aims at the above-mentioned technical problem, and provides a lightning arrestor with stable working state.

[0007] Therefore, the utility model provides a lightning arrestor, which comprises a shell, an input terminal and an output terminal on the shell, characterized in that it further comprises:

[0008] A varistor is arranged in the shell and comprises a first terminal and a second terminal.

[0009] A tripping member is slidably arranged in the shell, and the tripping member is provided with a first connecting piece for low temperature soldering with the first terminal and a second connecting piece for electrically connecting with the input terminal. A spring is arranged between one end surface of the tripping member and the inner wall of the shell.

[0010] A visible window is arranged on the shell and opposite to one end of the spring of the tripping member.

[0011] An identification plate is hingedly arranged on the inner wall of the shell and arranged between the visible window and the tripping member, and can be pushed away by the tripping member.

[0012] Further, two groups of varistors, tripping members, input terminals and output terminals are arranged. Further, two groups of varistors, tripping members, input terminals and output terminals are arranged.

[0013] Further, the tripping member further comprises:

[0014] The mounting rod is slidingly inserted on the shell, and the spring is sleeved on the mounting rod.

[0015] Further, the visual window is further provided with a transparent sealing plate.

[0016] The utility model discloses the beneficial effect is:

[0017] 1. The utility model discloses a mechanism linkage mode is expressed to express the working condition of lightning arrester, has stronger working stability compared with electronic pilot lamp.

[0018] 2. The utility model discloses the mounting rod is set to the sliding direction of tripping member is limited, improves the sliding stability of tripping member, and can make the mounting structure of spring more stable. DRAWINGS

[0019] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0020] Figure 2 It is the mounting structure schematic diagram of the inner shell and other components of the utility model;

[0021] Figure 3 It is the cross section structure schematic diagram of the utility model.

[0022] The mark in the drawing indicates that:

[0023] 1, shell, 2, input terminal, 3, output terminal, 5, pressure sensitive resistance, 6, first terminal, 7, second terminal, 8, tripping member, 9, first chamber, 10, second chamber, 11, spring, 12, visual window, 13, identification board, 14, mounting rod, 15, transparent sealing plate, 16, first connecting piece, 17, second connecting piece. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0025] Embodiment 1:

[0026] The embodiment provides a lightning arrester, which comprises a shell 1, the shell 1 comprises an inner shell and an outer shell, the shell 1 comprises an input terminal 2 and an output terminal 3, and further comprises:

[0027] A pressure sensitive resistor 5 is arranged in the housing 1, and includes a first terminal 6 and a second terminal 7;

[0028] A tripping member 8 is slidably arranged in the housing 1, and the tripping member 8 is provided with a first connecting piece 16 which is low-temperature welded with the first terminal 6 and a second connecting piece 17 which is electrically connected with the input terminal 2, and a spring 11 is arranged between an end surface of the tripping member 8 and an inner wall of the housing 1;

[0029] A visual window 12 is arranged on the housing 1, and is located at an opposite end of the spring 11 of the tripping member 8;

[0030] An identification plate 13 is hingedly arranged on the inner wall of the housing 1, and is arranged between the visual window 12 and the tripping member 8, and can be pushed away by the tripping member 8.

[0031] The housing 1 includes a first chamber 9 in which the pressure sensitive resistor 5 is arranged, and a second chamber 10 in which the tripping member 8 is arranged, and the output terminal 3 and the input terminal 2 are arranged below the housing 1, and the output terminal 3 and the input terminal 2 can be fixed to the housing 1 by plug-in or screwing, the first terminal 6 is electrically connected with the input terminal 2 through the tripping member 8, and the second terminal 7 is electrically connected with the output terminal 3; the tripping member 8 is a square column structure, and is slidably arranged in the second chamber 10 without rotation, and the tripping member 8 is provided with a connecting piece, and two ends of the connecting piece are respectively the first connecting piece 16 which is low-temperature welded on the first terminal 6 and the second connecting piece 17 which is electrically connected with the input terminal 2 (through a wire soft connection), the first connecting piece 16 and the first terminal 6 are welded by a low-melting-point welding material such as tin soldering, when the pressure sensitive resistor 5 deteriorates to a certain degree, the low-temperature welding point can be melted to make the tripping member assembly trip, under the driving of the spring 11, the tripping member 8 moves to the top of the housing 1, and the first connecting piece 16 and the first terminal 6 are disconnected; a visual window 12 is arranged at the top of the housing 1, and is arranged above the tripping member 8, one side edge of the identification plate 13 is hingedly arranged on the inner wall of the second chamber 10, and when the surge arrester is in a normal working state, the identification plate 13 is horizontally arranged to block in the second chamber 10, and the identification plate 13 is observed from the visual window 12, and when the surge arrester is in a tripping state, the tripping member 8 pushes the identification plate 13 to the inner wall of the second chamber 10, so that the identification plate 13 is attached to the inner wall of the second chamber 10, and at this time, the tripping member 8 is observed from the visual window 12, the outer surface of the tripping member 8 is painted in a color which is obviously different from that of the identification plate 13, for example, the identification plate 13 is green, and the tripping member 8 is red, the green color represents a normal working state, and the red color represents a tripping state.

[0032] The working state of the surge arrester is expressed by a mechanism linkage, and has stronger working stability compared with an electronic indicator lamp.

[0033] Embodiment 2

[0034] The embodiment provides a lightning arrester, in addition to comprising the technical scheme of the above embodiment, further has the following technical features.

[0035] Two groups of pressure sensitive resistors 5, tripping members 8 and input and output terminals 3 are arranged.

[0036] Two sides of the shell 1 are provided with the pressure sensitive resistors 5, the tripping members 8 and the input and output terminals 3, and the tripping members 8 can be used in cooperation with the identification plate 13, when the tripping member 8 of one of them trips, the identification plate 13 is folded to the inner wall of the second cavity 10, and through the parallel combination of the two groups of pressure sensitive resistors 5, the current impact resistance of the surge protector can be significantly improved. The pressure sensitive resistors 5 after parallel connection can share the current and reduce the burden of a single pressure sensitive resistor 5, thereby prolonging the service life thereof; when used in parallel, if one of the pressure sensitive resistors 5 fails, the other one can still work, thereby ensuring the overall reliability of the surge protector. In addition, by selecting the pressure sensitive resistors 5 of the same specification in parallel, the situation that one is burned out first in the test process can be avoided.

[0037] Embodiment 3

[0038] The embodiment provides a lightning arrester, in addition to comprising the technical scheme of the above embodiment, further has the following technical features.

[0039] The tripping member 8 further comprises:

[0040] The mounting rod 14 is slidably inserted on the shell 1, and the spring 11 is sleeved on the mounting rod 14.

[0041] The mounting rod 14 is arranged to limit the sliding direction of the tripping member 8, improve the sliding stability of the tripping member 8, and make the mounting structure of the spring 11 more stable.

[0042] Embodiment 4

[0043] The embodiment provides a lightning arrester, in addition to comprising the technical scheme of the above embodiment, further has the following technical features.

[0044] The visible window 12 is further provided with a transparent sealing plate 15.

[0045] The transparent sealing plate 15 is arranged to prevent water or impurities such as dust from falling into the shell 1.

[0046] The embodiments of the present application are described above with reference to the drawings, and the embodiments and features in the embodiments of the present application can be combined with each other without conflict, the present application is not limited to the above-described specific embodiments, the above-described specific embodiments are only illustrative, but not restrictive, and a person of ordinary skill in the art can make many forms without departing from the purpose of the present application and the scope protected by the claims under the inspiration of the present application, which all belong to the protection scope of the present application.

Claims

1. A surge arrester, comprising a housing (1), wherein the housing (1) includes an input terminal (2) and an output terminal (3), characterized in that, Also includes: A varistor (5) is disposed inside a housing (1) and includes a first terminal (6) and a second terminal (7). The tripping component (8) is slidably disposed inside the housing (1), and the tripping component (8) is provided with a first connecting piece (16) that is low temperature welded to the first terminal (6) and a second connecting piece (17) that is electrically connected to the input terminal (2). A spring (11) is provided between one end face of the tripping component (8) and the inner wall of the housing (1). A viewing window (12) is provided on the housing (1) and is located at the opposite end of the spring (11) of the tripping member (8); The signboard (13) is hinged to the inner wall of the housing (1) and is located between the viewing window (12) and the release member (8), and can be pushed open by the release member (8).

2. A surge arrester according to claim 1, characterized in that, It is equipped with two sets of varistors (5), tripping components (8), and input and output terminals (3).

3. A surge arrester according to claim 1, characterized in that, The tripping component (8) also includes: Mounting rod (14) is slidably inserted into housing (1), and spring (11) is sleeved on mounting rod (14).

4. A surge arrester according to claim 1, characterized in that, A transparent cover plate (15) is also provided on the viewing window (12).

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