CN223729450U

CN223729450U - Lightning arrester

Info

Publication number: CN223729450U
Application number: CN202423068620.7U
Authority: CN
Inventors: 吴元伟; 叶球英; 周冬冬
Original assignee: Zhejiang Jiuda Electronics Co ltd
Current assignee: Zhejiang Jiuda Electronics Co ltd
Priority date: 2024-12-11
Filing date: 2024-12-11
Publication date: 2025-12-26
Anticipated expiration: 2034-12-11

Abstract

This utility model relates to the field of protectors, and more particularly to a surge arrester; it includes a housing with input terminals and output terminals, characterized in that it further includes: a varistor disposed within the housing, including a first terminal and a second terminal; a tripping member slidably disposed within the housing, and having a first connecting piece cryogenically welded to the first terminal and a second connecting piece electrically connected to the input terminal, with a spring between one end face of the tripping member and the inner wall of the housing; a viewing window opened on the housing at the end opposite to the spring of the tripping member; and an indicator plate hinged to the inner wall of the housing, disposed between the viewing window and the tripping member, and pushable by the tripping member; this utility model expresses the working status of the surge arrester through a mechanism linkage, which has stronger working stability compared to electronic indicator lights.

Description

Lightning arrester

Technical Field

The utility model relates to the field of protectors, in particular to a lightning arrester.

Background

The surge protector generally includes a normal operating condition, an overvoltage condition, and a trip condition. In a normal working state, the piezoresistor is in a high-resistance state, and the normal working of a circuit where the piezoresistor is positioned is not affected. The resistance value will remain high in the set voltage range. When the circuit suffers from a sudden overvoltage, such as a lightning strike or a power system fault, the voltage rises sharply, and when the line voltage exceeds a threshold voltage (also referred to as the rated voltage), the surge protector enters an overvoltage state. Once the voltage of the line exceeds the rated voltage of the varistor, the resistance begins to change.

Low temperature welds are typically provided in surge protectors that can melt when the surge protection assembly degrades to a degree that the surge protector trips.

In the prior art, the state of the surge protector is usually expressed by adopting the color of the indicator lamp, and if the indicator lamp has an electrical fault, the indicator lamp cannot work normally.

Accordingly, there is an urgent need to provide an improved solution to the above technical problems.

Disclosure of utility model

The utility model aims at solving the technical problems and provides a lightning arrester with stable working state.

In view of this, the present utility model provides a lightning arrester comprising a housing, the housing including an input terminal and an output terminal, the lightning arrester further comprising:

the piezoresistor 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 way, a first connecting sheet which is welded with the first terminal at low temperature and a second connecting sheet which is electrically connected with the input terminal are arranged on the tripping component, and a spring is arranged between one end face of the tripping component and the inner wall of the shell;

The visual window is arranged on the shell and is arranged at the opposite end of the spring of the tripping member;

The marking plate is hinged on the inner wall of the shell, is arranged between the visual window and the tripping member and can be pushed away by the tripping member.

Further, two groups of piezoresistors, tripping members and input and output terminals are arranged.

Further, the trip member further includes:

the mounting rod is inserted on the shell in a sliding manner, and the spring is sleeved on the mounting rod.

Further, a transparent sealing plate is arranged on the visual window.

The beneficial effects of the utility model are as follows:

1. the utility model expresses the working state of the lightning arrester in a mechanism linkage mode, and has stronger working stability compared with an electronic indicator lamp.

2. According to the utility model, the sliding direction of the tripping member is limited by arranging the mounting rod, so that the sliding stability of the tripping member is improved, and the mounting structure of the spring is more stable.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the mounting structure of the inner shell and other components of the present utility model;

Fig. 3 is a schematic cross-sectional structure of the present utility model.

The label in the figure is:

1. the circuit comprises a shell, 2, an input terminal, 3, an output terminal, 5, a piezoresistor, 6, a first terminal, 7, a second terminal, 8, a tripping component, 9, a first chamber, 10, a second chamber, 11, a spring, 12, a visual window, 13, a marking plate, 14, an installation rod, 15, a transparent sealing plate, 16, a first connecting sheet, 17 and a second connecting sheet.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.

Example 1:

The embodiment provides a lightning arrester, including casing 1, casing 1 includes inner shell and shell, includes input terminal 2 and output terminal 3 on the casing 1, still includes:

The piezoresistor 5 is arranged in the shell 1 and comprises a first terminal 6 and a second terminal 7;

The tripping member 8, the tripping member 8 is slidably arranged in the shell 1, the tripping member 8 is provided with a first connecting sheet 16 welded with the first terminal 6 at low temperature and a second connecting sheet 17 electrically connected with the input terminal 2, and a spring 11 is arranged between one end surface of the tripping member 8 and the inner wall of the shell 1;

a visual window 12, the visual window 12 is arranged on the shell 1 and is arranged at the opposite end of the spring 11 of the tripping member 8;

The identification plate 13, the identification plate 13 is hinged on the inner wall of the shell 1, and is arranged between the visual window 12 and the tripping member 8, and can be pushed away by the tripping member 8.

The casing 1 comprises a first chamber 9 for mounting the piezoresistor 5, a second chamber 10 for mounting the tripping member 8, the output terminal 3 and the input terminal 2 are arranged below the casing 1, the connection modes of the output terminal 3 and the input terminal 2 and the casing 1 can be fixed in a plugging mode or a screw mode, 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 trip member 8 is in a square column structure and is arranged in the second chamber 10 in a non-rotatable sliding way, a connecting sheet is arranged in the trip member 8, two ends of the connecting sheet are respectively provided with a first connecting sheet 16 welded on the first terminal 6 at low temperature and a second connecting sheet 17 electrically connected with the input terminal 2 (through soft connection of a wire), the first connecting sheet 16 and the first terminal 6 are welded by soldering or other low-melting-point welding materials, when the piezoresistor 5 is degraded to a certain degree, the low-temperature welding points can be melted to enable the trip assembly to trip, under the driving of a spring 11, the trip member 8 moves towards the top of the shell 1, the first connecting sheet 16 and the first terminal 6 are disconnected, a visible window 12 is arranged at the top of the shell 1 and is arranged above the trip member 8, one side edge of the identification plate 13 is hinged on the inner wall of the second chamber 10, and the identification plate 13 is transversely plugged in the second chamber 10 in a normal working state, the identification plate 13 is observed inwards from the visible window 12, and when the lightning arrester is in a trip state, the trip member 8 pushes the identification plate 13 to the inner wall 10 to the second chamber 10, the visible window 13 is attached to the inner wall of the second chamber 12, the exterior of the trip member 8 is painted with a color that is distinct from the sign board 13, e.g., the sign board 13 is green, the trip member 8 is red, the green-expressed state is normal operation, and the red-expressed state is the tripped state.

The working state of the lightning arrester is expressed in a mechanism linkage mode, and the lightning arrester has stronger working stability compared with an electronic indicator lamp.

Example 2:

the present embodiment provides a lightning arrester having the following technical features in addition to the technical scheme including the above embodiments.

Two groups of piezoresistors 5, tripping members 8 and input and output terminals 3 are provided.

The two sides of the shell 1 are respectively provided with the piezoresistor 5, the tripping element 8 and the input and output terminals 3, the tripping element 8 can be matched with the identification plate 13, when one of the tripping elements 8 trips, the identification plate 13 is folded onto the inner wall of the second cavity 10, and the current impact resistance of the surge protector can be obviously improved through the parallel combination of the two groups of piezoresistors 5. When the parallel piezoresistor 5 is used, if one piezoresistor 5 fails, the other piezoresistor can still work continuously, so that the overall reliability of the surge protector is ensured. In addition, by selecting the piezoresistors 5 of the same specification to be connected in parallel, the condition that one piece of piezoresistor is burnt out first in the test process can be avoided.

Example 3:

The trip member 8 further includes:

The installation pole 14, installation pole 14 slides and inserts and establish on casing 1, and spring 11 cover is established on installation pole 14.

By setting the mounting lever 14 to limit the sliding direction of the trip member 8, the sliding stability of the trip member 8 is improved, and the mounting structure of the spring 11 can be made more stable.

Example 4:

A transparent sealing plate 15 is also arranged on the visual window 12.

The transparent sealing plate 15 is provided to prevent water, dust, or other impurities from falling into the housing 1.

The embodiments of the present application have been described above with reference to the accompanying drawings, in which the embodiments of the present application and features of the embodiments may be combined with each other without conflict, the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the scope of the present application.

Claims

1. The utility model provides a lightning arrester, includes casing (1), includes input terminal (2) and output terminal (3) on casing (1), its characterized in that still includes:

the piezoresistor (5), the piezoresistor (5) is arranged in the shell (1) and comprises a first terminal (6) and a second terminal (7);

The tripping member (8), the tripping member (8) can be slidably arranged in the shell (1), the tripping member (8) is provided with a first connecting sheet (16) welded with the first terminal (6) at low temperature and a second connecting sheet (17) electrically connected with the input terminal (2), and a spring (11) is arranged between one end surface of the tripping member (8) and the inner wall of the shell (1);

A visual window (12), wherein the visual window (12) is arranged on the shell (1) and is arranged at the opposite end of the spring (11) of the tripping member (8);

The identification plate (13), the identification plate (13) is hinged on the inner wall of the shell (1), and is arranged between the visual window (12) and the tripping member (8) and can be pushed away by the tripping member (8).

2. A lightning arrester according to claim 1, characterized in that two sets of piezoresistors (5), trip members (8) and input and output terminals (3) are provided.

3. A lightning arrester according to claim 1, characterized in that the trip member (8) further comprises:

the mounting rod (14), the mounting rod (14) is inserted on the shell (1) in a sliding way, and the spring (11) is sleeved on the mounting rod (14).

4. A lightning arrester according to claim 1, characterized in that the viewing window (12) is further provided with a transparent sealing plate (15).