CN201242920Y

CN201242920Y - MOV overfire thread-losing protection device

Info

Publication number: CN201242920Y
Application number: CNU2008200262112U
Authority: CN
Inventors: 王培波
Original assignee: Yantai Master Lightning Protection Equipment Co Ltd
Current assignee: Yantai Master Lightning Protection Equipment Co Ltd
Priority date: 2008-07-21
Filing date: 2008-07-21
Publication date: 2009-05-20
Anticipated expiration: 2018-07-21

Abstract

The utility model discloses an MOV overheating tripping protection device, which is composed of a voltage dependent resistor chip, a tripping device and a power input end; wherein, the tripping device is that the middle part of a glucinfum bronze sheet is bent to form an included angle Alpha within 45 to 60 degrees, one end of the glucinfum bronze sheet is fixed with the power input end, and the other end is welded with the voltage dependent resistor chip by low-temperature soldering tin; the glucinfum bronze sheet presents a linear shape under the connection state; and an installing strip hole is arranged at the welding end between the glucinfum bronze sheet and the voltage dependent resistor chip. The MOV overheating-disengaging protection device has the advantages of excellent conductivity, high resisting elasticity, good shielding effect, strong corrosion protection, long service time and good safety and reliability.

Description

The overheated dropout protective device of a kind of MOV

Technical field

The utility model belongs to the lightning arrester technical field, especially relates to the overheated dropout protective device of a kind of MOV.

Background technology

At present, the application of lightning arrester is more extensive, especially at communication field, need to install the safety that lightning arrester guarantees communication apparatus, existing lightning arrester adopts the mechanical type thermal release device mostly, adopt one on spring and interior piezo-resistance (MOV) the chip soldered of SPD, the other end is connected with the input power supply, spring is in all the time and strains at or compressive state, long this state makes spring lose efficacy extremely easily, and simultaneously the choosing of the coefficient of elasticity of spring, Technology for Heating Processing etc. all are the key factors that influences the thermal release device reliability.

Summary of the invention

The purpose of this utility model be to improve the deficiency of prior art and provide that good, the high tensile elasticity of a kind of conductivity, high shield effectiveness, anticorrosive property are strong, long service life, the safe and reliable overheated dropout protective device of MOV.

The purpose of this utility model is to realize like this; the overheated dropout protective device of a kind of MOV; form by voltage dependent resistor chip, trip gear and power input; be characterized in that trip gear is that the middle part bending of beryllium-bronze sheet forms angle α; one end and the power input of beryllium-bronze sheet are fixed; the other end and voltage dependent resistor chip connect by the eutectic welding soldering, and the beryllium-bronze sheet is linearly under connection status.

In order further to realize the purpose of this utility model, can be that described angle α is between the 45-60 degree.

In order further to realize the purpose of this utility model, the thickness that can be described beryllium-bronze sheet is between the 0.25-0.3 millimeter.

In order further to realize the purpose of this utility model, can be that beryllium-bronze sheet and voltage dependent resistor chip welding ends are provided with the installation cylindrical void.

Compared with the prior art the utility model has following distinguishing feature and good effect: trip gear of the present utility model is that the middle part bending of beryllium-bronze sheet forms angle α, one end and the power input of beryllium-bronze sheet are fixed, the other end and voltage dependent resistor chip connect by the eutectic welding soldering, the beryllium-bronze sheet is linearly under connection status, it is good to make full use of beryllium-bronze conductivity like this, high tensile elasticity, high shield effectiveness, anticorrosive property is strong, these characteristics such as long service life, guaranteed the reliably working of trip gear, low temperature melts soldering tin when temperature reaches designing requirement, because the recovery elastic reaction of beryllium copper sheet bending, the beryllium-bronze sheet flicks, cut off major loop, realize product heat dropout protection; Angle α is between the 45-60 degree, and the thickness of beryllium-bronze sheet is that assurance beryllium-bronze sheet can normally in the designing requirement scope effectively be worked between 0.25 millimeter; Beryllium-bronze sheet and voltage dependent resistor chip welding ends are provided with the installation cylindrical void, the pin of voltage dependent resistor chip can be installed in to be installed in the cylindrical void, guarantee that contact is good under welded condition, conduction is working properly, can flick smoothly when guaranteeing simultaneously to reach design temperature low temperature melts soldering tin, flick in the process and do not stick together with voltage dependent resistor chip.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is a kind of structural representation of the utility model trip gear beryllium-bronze sheet.

Fig. 3 is an another kind of structural representation of the present utility model.

Embodiment

Embodiment 1; the overheated dropout protective device of a kind of MOV, with reference to Fig. 1, Fig. 2, trip gear 2 is that the middle part bending of beryllium-bronze sheet forms angle α; one end of beryllium-bronze sheet and power input 3 are fixing; the other end and voltage dependent resistor chip 1 connect by the eutectic welding soldering, and the beryllium-bronze sheet is linearly under connection status, and angle α is between the 45-60 degree; thickness is between the 0.25-0.3 millimeter; angle α is 60 degree in the present embodiment, and thickness is 0.25 millimeter, and this constitutes a kind of structure of the present utility model.

Embodiment 2; the overheated dropout protective device of a kind of MOV; with reference to Fig. 2, Fig. 3; be on the basis of embodiment 1; beryllium-bronze sheet and voltage dependent resistor chip 1 welding ends are provided with installs cylindrical void 4, and the pin of voltage dependent resistor chip 1 is installed in to install in the cylindrical void 4 and welds with the beryllium-bronze sheet, and angle α is 45 degree in the present embodiment; thickness is 0.3 millimeter, and other and embodiment 1 are identical.

Claims

1, the overheated dropout protective device of a kind of MOV; form by voltage dependent resistor chip (1), trip gear (2) and power input (3); it is characterized in that trip gear (2) is that the middle part bending of beryllium-bronze sheet forms angle α; one end of beryllium-bronze sheet and power input (3) are fixing; the other end and voltage dependent resistor chip (1) connect by the eutectic welding soldering, and the beryllium-bronze sheet is linearly under connection status.

2, the overheated dropout protective device of a kind of MOV according to claim 1 is characterized in that described angle α is between the 45-60 degree.

3, the overheated dropout protective device of a kind of MOV according to claim 1, the thickness that it is characterized in that described beryllium-bronze sheet is between the 0.25-0.3 millimeter.

4, the overheated dropout protective device of a kind of MOV according to claim 1 is characterized in that beryllium-bronze sheet and voltage dependent resistor chip (1) welding ends is provided with installation cylindrical void (4).