CN203312225U

CN203312225U - Tubular fuse fused safely under high voltage

Info

Publication number: CN203312225U
Application number: CN2013203653405U
Authority: CN
Inventors: 郑德报; 刘猛; 吕继勇; 王辉
Original assignee: Suzhou Littelfuse OVS Ltd
Current assignee: Suzhou Littelfuse OVS Ltd
Priority date: 2013-06-25
Filing date: 2013-06-25
Publication date: 2013-11-27
Anticipated expiration: 2023-06-25

Abstract

The utility model relates to the field of fuses, and specifically relates to a tubular fuse fused safely under a high voltage. The tubular fuse comprises a tubular fuse body. The tubular fuse body comprises an insulating housing. End electrodes are sleeved on two sides of the insulating housing. A fuse wire is arranged in the insulating housing. The tubular fuse further comprises a spring. Under a tension state, one end of the spring is in welded connection with the inner wall of the end electrode on one side of the insulating housing through a soldering tin, and the other end of the spring is connected with one end of the fuse wire. The other end of the fuse wire is in welded connection with the inner wall of the end electrode on the other side of the insulating housing through a soldering tin. When a current is abnormal and the fuse wire is fused, the fuse wire can be quickly broken due to the retraction effect of the spring, so that the fuse can rapidly cut off an electric arc and is fused safely under the high voltage, and property is protected against loss.

Description

The tube fuse of a kind of under high pressure safety fusing

Technical field

The utility model relates to the fuse field, is specifically related to the tube fuse of a kind of under high pressure safety fusing.

Background technology

Fuse is also referred to as fuse; its effect is: when circuit breaks down or be abnormal; being accompanied by circuit constantly raises; and the electric current raise likely damages some important devices or the valuable device in circuit, also likely burns circuit and even causes fire, so; fuse will be raised to certain height and regular hour at current anomaly; self fuses, and cuts off electric current, thereby plays the effect of protective circuit safe operation.In prior art, the maximum voltage that tube fuse generally can bear is 250V, when this kind fuse is installed in 500V or 600V, in the time of even in the circuit of 1000V, when circuit breaks down or be abnormal, although fuse is understood self fusing, but simultaneously because circuit voltage is higher, in insulation shell inside, have electric arc and produce and be not easy to extinguish, and the temperature of insulation shell inside and air pressure are sharply raise, then fuse can explode and be on fire.In this case, although fuse self has fused, also can burn circuit and even cause fire.

Therefore the internal structure to existing fuse is further reformed.

The utility model content

The purpose of this utility model is for the defect of prior art and deficiency, provide a kind of simple in structure, the tube fuse of a kind of under high pressure safety fusing reasonable in design, easy to use, it adopts and in the fuse body, adds a spring, this spring is weldingly connected at next end of extended state and fuse termination electrode inwall, and this spring other end and fuse are weldingly connected; It has after current anomaly makes fuse failure, due to the retraction effect of spring, can disconnect fast fuse, thereby fuse under high pressure can also be fused safely by fast shut-off electric arc, protects not suffering a loss of property.

The tube fuse of a kind of under high pressure safety described in the utility model fusing, it comprises the tube fuse body, described tube fuse body comprises an insulation shell, this insulation shell two side ends is arranged with respectively termination electrode, one fuse is set in this insulation shell, it also comprises spring, described spring is weldingly connected by scolding tin at the termination electrode inwall of next end of extended state and insulation shell one side, this spring other end is connected with fuse one end, and the termination electrode inwall of the other end of this fuse and insulation shell opposite side is weldingly connected by scolding tin.

After adopting said structure, the utility model beneficial effect is: the tube fuse of a kind of under high pressure safety described in the utility model fusing, it adopts and in the fuse body, adds a spring, this spring is weldingly connected at next end of extended state and fuse termination electrode inwall, and this spring other end and fuse are weldingly connected; It has after current anomaly makes fuse failure, due to the retraction effect of spring, and the fuse that can disconnect fast, thus fuse under high pressure can also be fused safely by fast shut-off electric arc, protect not suffering a loss of property.

The accompanying drawing explanation

Accompanying drawing described herein is to be used to provide further understanding of the present utility model, forms the application's a part, but does not form to improper restriction of the present utility model, in the accompanying drawings:

Fig. 1 is the utility model structural representation;

Fig. 2 is the structural representation after the utility model fuse failure.

Description of reference numerals:

1, termination electrode; 2, insulation shell; 3, fuse; 4, scolding tin; 5, spring.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment, describe the utility model in detail, illustrative examples wherein and explanation only are used for explaining the utility model, but not as to restriction of the present utility model.

As Fig. 1, shown in Figure 2, the tube fuse of the described a kind of under high pressure safety of this embodiment fusing, it comprises the tube fuse body, described tube fuse body comprises an insulation shell 2, these insulation shell 2 two side ends are arranged with respectively termination electrode 1, the interior fuse 3 that arranges of this insulation shell 2, it also comprises spring 5, described spring 5 is weldingly connected by scolding tin 4 at termination electrode 1 inwall of next end of extended state and insulation shell 2 one sides, these spring 5 other ends are connected with fuse 3 one ends, termination electrode 1 inwall of the other end of this fuse 3 and insulation shell 2 opposite sides is weldingly connected by scolding tin 4.

The present embodiment in use, when circuit breaks down or is abnormal, now the intrinsic fuse 3 of tube fuse is fused, the fuse 3 of the end that is connected with spring 5 after fusing due to an end of fuse 3, is connected with the spring 5 of extended state, therefore when the moment that fuse 3 is fused, can be pulled open fast, thereby fast shut-off the generation of tube fuse body interior electric arc, safety fusing, guaranteed property safety, reduced the generation of security incident.

The tube fuse of the described a kind of under high pressure safety of this embodiment fusing, it adopts and in the fuse body, adds a spring, and this spring is weldingly connected at next end of extended state and fuse termination electrode inwall, and this spring other end and fuse are weldingly connected; It has after current anomaly makes fuse failure, due to the retraction effect of spring, can disconnect fast fuse, thereby fuse under high pressure can also be fused safely by fast shut-off electric arc, protects not suffering a loss of property.

The above is only preferred embodiments of the present utility model, therefore all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1. the tube fuse of a under high pressure safety fusing, it comprises the tube fuse body, described tube fuse body comprises an insulation shell (2), this insulation shell (2) two side ends is arranged with respectively termination electrode (1), one fuse (3) is set in this insulation shell (2), it is characterized in that: it also comprises spring (5), described spring (5) is weldingly connected by scolding tin (4) at termination electrode (1) inwall of next end of extended state and insulation shell (2) one sides, this spring (5) other end is connected with fuse (3) one ends, termination electrode (1) inwall of the other end of this fuse (3) and insulation shell (2) opposite side is weldingly connected by scolding tin (4).