CN217387069U

CN217387069U - High-voltage circuit safety device capable of quickly breaking and extinguishing arc

Info

Publication number: CN217387069U
Application number: CN202220474040.XU
Authority: CN
Inventors: 陈明勤; 徐春
Original assignee: Shanghai Songshan Electronics Co ltd
Current assignee: Shanghai Songshan Electronics Co ltd
Priority date: 2022-03-04
Filing date: 2022-03-04
Publication date: 2022-09-06
Anticipated expiration: 2032-03-04

Abstract

The utility model discloses a high pressure divides circuit safeties who divides branch fast and arc extinguishing, including fuse and spring, fuse one end is connected with spring one end, the fuse adopts the copper pipe crimping with spring coupling department, the fuse is connected with copper cap or terminal with the spring outside end. Compared with the prior art, the utility model the advantage be: 1. the utility model discloses can be used to in the circuit of 1KV-10KV voltage, 1.25A electric current, play quick disconnected branch and arc extinguishing effect. 2. The arc extinguishing device has the advantages of simple structure, small occupied space, outstanding arc extinguishing effect, simple production process and low cost, and can be used in various product structures.

Description

High-voltage circuit safety device capable of quickly breaking and extinguishing arc

Technical Field

The utility model relates to a circuit safeties especially relates to a high pressure divides disconnected circuit safeties of and arc extinguishing fast.

Background

In some circuit applications, the operating voltage may be below 10KV and the operating current may be below 1.25A, and when a circuit fault such as an overcurrent or a short circuit occurs in the circuit, a fuse is required to quickly and permanently open the circuit, thereby protecting other elements in the circuit.

In the prior art, in such a circuit with high voltage and low current, arc extinction and circuit disconnection are achieved by means of fillers and reinforced insulation of shell materials, so as to protect other elements in the circuit.

1. By means of the filler, the arc extinguishing capability is generally used below a voltage level of 500V;

2. the high-voltage and high-current fuse link generally adopts an impact pin mode to extinguish the arc, but the arc extinguishing structure is complex, and the fuse link is large in product volume, complex in production process and high in production cost.

Therefore, it is an urgent need to solve the problem of the art to develop a circuit safety device capable of quickly breaking and extinguishing arc under high voltage.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve above-mentioned not enough, provide a high pressure divides the circuit safeties of disconnected and arc extinguishing fast.

The above object of the present invention is achieved by the following technical solutions: a circuit safety device for high-voltage quick breaking and arc extinguishing comprises a fuse wire and a spring, wherein one end of the fuse wire is connected with one end of the spring.

Furthermore, the junction of the fuse wire and the spring is in compression joint by a copper pipe, the outer side end of the fuse wire and the spring is connected with a copper cap or a terminal, and the connection with the copper cap or the terminal can adopt other fixed connection modes such as riveting, welding and the like according to product design, so that the process is simple and the production is convenient.

Furthermore, the spring is made of phosphor copper wires, the surfaces of the wires are plated with silver, and the thickness of a plating layer is larger than 3 microns. Arc extinguishing capability grade: the withstand voltage of 1KV can be increased every 1mm of the extension length L of the spring.

During practical application, will as required the utility model discloses arrange in various casings, both ends (fuse and the outside end of spring) are connected fixedly through soldering tin and copper cap or terminal socket, but this product quick reliable divides disconnected 5KV voltage, protection circuit components and parts.

Compared with the prior art, the utility model the advantage be:

1. the utility model discloses can be used to in the circuit of 1KV-10KV voltage, 1.25A electric current, play quick disconnected branch and arc extinguishing effect.

2. The arc extinguishing device has the advantages of simple structure, small occupied space, outstanding arc extinguishing effect, simple production process and low cost, and can be used in various product structures.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the practical application of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figure 1, the circuit safety device for high-voltage quick breaking and arc extinguishing comprises a fuse wire 1 and a spring 2, wherein one end of the fuse wire 1 is connected with one end of the spring 2.

Furthermore, the junction of the fuse wire 1 and the spring 2 is crimped by a copper pipe 3, the outer side ends (ends a and b) of the fuse wire 1 and the spring 2 are connected with a copper cap or a terminal, and the connection with the copper cap or the terminal can adopt other fixed connection modes such as riveting, welding and the like according to product design, so that the process is simple and the production is convenient.

Furthermore, the spring 2 is made of phosphor copper wires, the surfaces of the wires are plated with silver, and the thickness of a plating layer is larger than 3 microns. Arc extinguishing capability grade: the withstand voltage 1KV can be increased every 1mm of the extension length L of the spring 2.

As shown in FIG. 2, in practical application, the utility model is placed in various housings 4 according to requirements, and both ends (the outside ends of the fuse 1 and the spring 2, namely the end a and the end b in the figure) are connected and fixed with copper caps or terminal sockets through soldering tin, so that the product can quickly and reliably break 5KV voltage to protect circuit components.

The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.

Claims

1. The utility model provides a high pressure divides circuit safeties that divides fast and arc extinguishing which characterized in that: the fuse wire comprises a fuse wire and a spring, wherein one end of the fuse wire is connected with one end of the spring; the junction of the fuse wire and the spring is pressed by a copper pipe, and the outer side end of the fuse wire and the spring is connected with a copper cap or a terminal.

2. A circuit breaker for rapid breaking and extinguishing of arc of high voltage according to claim 1, wherein: the spring is made of phosphor copper wires, the surfaces of the wires are plated with silver, and the thickness of a plating layer is larger than 3 micrometers.