CN85203813U

CN85203813U - Circuit breaker with multiple fuse elements

Info

Publication number: CN85203813U
Application number: CN 85203813
Authority: CN
Inventors: 赵志强
Original assignee: Individual
Current assignee: Individual
Priority date: 1985-09-11
Filing date: 1985-09-11
Publication date: 1986-09-03

Abstract

The utility model discloses a circuit breaker with multiple fuse elements used for overload protection and short-circuit protection of an electrician device in an emergent protection device. A plurality of space grooves are arranged in an outer shell along the axial direction, and a unit fusing part is arranged in each space groove. The relative movements of the conductive assemblies arranged on the unit fusing part and a rotating end cover can switch on another unit fusing wire immediately after a unit fusing wire is fused. The circuit breaker has the advantages of multiple uses, convenient maintenance, exact and timely exchange except for the feature of a disposable circuit breaker, which creates good conditions for automatic recording and safe operation.

Description

Circuit breaker with multiple fuse elements

The utility model relates to emergency protective device; when particularly being related to electrical equipment overload and short circuit after the one unit blown fuse; do not need to take off and change one in addition, circuit is connected as long as just can connect another unit fuse by internal conversion.

Fuse is absolutely necessary as short circuit and overload protection in various electric equipments and electronic instrument device.The general conventional fuse that uses adopts spiral, and its structure is two that two end caps are separately fixed at electroceramics or glass glass shell basically, bridge joint fusible link between the end cap (with) or fusing indication silk.Because the capacity of various loads in the circuit, for example different and used fuse specifications, the kind difference of voltage, electric current and power, and because overload and contingency cause burning of fusible link often, so fuse also is a kind of easily-consumed products.In sum, the fuse purposes is wide, more than the kind, consume mostly be well-known.

From domestic and international fuse manufacturing situation, still produce once discarded formula fuse basically now.And this product advantage is simple in structure, cheap, reliable in function, and shortcoming is can only use once, just gets rid of after damaging, and is promptly discarded.And discarded shell, copper cap, the quartz sand etc. of comprising, its value accounts for more than 90% of product, and real obsolete only be copper wire or constantan wire about one one inch, so the waste of this product is greatly.

As above-mentioned, load capacity difference in various electric and electronic devices, the specification of selected fuse are also just different.1A (ampere), 2A, 3A are for example arranged under various assigned voltages ... 60A ... Deng.Like this, the fuse of impossible complete all specifications of electrician.In the case, the electrician can only select the fuse near former grade as far as possible for use when the fuse that transposing has damaged, and it tie in this way, gently then needs to change continually, and is heavy then cause electric equipment to damage because of losing to protect.

The objective of the invention is in order to overcome above-mentioned shortcoming, and make a kind of novel multicore fuse, be characterized in a shell, constituting some unit fusing parts by improving, each part can both play a fuse independently and act on originally, and do not disturb mutually, after a fuse burns, by the outer buttons rotation mechanism at once another unit place in circuit, make easy to maintenance, coupling is correct, can save big content of starting materials material again, and cost is almost near once discarding the formula fuse.

Fuse of the present invention comprises a shell, a fixing end cap, two above fusible links and (or) fusing indication silk, conducting strip, a weld-ring and a rotating end cap, and mainly partly be separated into some chamber or arcing chambers (groove between common name) of almost independently fusing by outer casing inner wall, each Cao Nei And all be provided with one or one group of fusible link and (or) fusing indication silk, by being located at the unit fusing part that groove two conducting strip and weld-ring are drawn respectively, in fact it play a part single fuse and by contacting stopping means between rotating end cap and the conducting strip, this device comprises that rotating end cap is towards the travel mechanism of the protrusion of a side at the bottom of the shell bucket and the interaction between the upper groove of conducting strip opposite flank, make fuse after the fusing of a unit fusing part, connect another unit by rotation.

In order to be easy to that the present invention is understood, below in conjunction with the in addition detailed explanation of accompanying drawing.

Fig. 1 represents crowd structural section figure of core formula fuse.

Fig. 2 is the cross section view that expression is done along A-A among Fig. 1.

The critical piece of group's core formula fuse has shell (1), fusible link (10), weld-ring (12), conductive component is divided into conductive clips (2) and welding column (9), travel mechanism comprises insulation board (3), contact end plate (4), iron bullet (5) and axle (12) etc. are seen Fig. 1 and Fig. 2.Wherein above-mentioned said shell (1) profile is a drum shape, equally distributed groove (1a) more than 2 arranged on the inwall vertically, on the bucket baseplane, there is respective numbers to lead to the through hole (1b) of a groove (1a) position approximate center, be located at the conducting strip (2) of a groove (1a) two ends, one group of fusing material (comprising fusible link (10) and fusing indication silk (8)) has constituted the unit part that fuses between the contact (12a) of weld-ring (12) and they.These unit fusing parts do to select conduction to be connected by conducting strip (2) with contact travel mechanism, so after the fusing material of a fusing part burns, by rotation contact travel mechanism, can make another fusing part line attachment, realize fuse is repeatedly used.

Conducting strip (2) is a sheet member with a through hole in said unit () the fusing part, it is positioned at the groove of shell (1) bucket bottom surface near through hole (1b), said cylinder (9) is a tubular rivet, it one pass conducting strip (2) and shell (1) the bucket through hole (1b) at the end; And puts in a groove (1a) a little, and the other end keeps contacting with end face outside conducting strip (2) through hole.The weld-ring (12) that is positioned at the shell other end is the copper ring of a band dentation in-flanges that equates with a groove quantity, one end of fusible link (10) and fusing indication silk (8) is welded in dentation in-flanges (12a) two ends respectively, and the other end of fusible link (10) is welded in the outer surface of welding column (9), and the other end of fusing indication silk (8) is welded in the downside of weld tabs (6) by the centre bore of welding column (9) and spring (7).Fusible link (10) is not less than spiral similar model cavity space size with indication silk (8) position at relative central space center (1d) in a groove (1a), and being enough to guarantee does not influence other each unit fusing material after the unit fusible link fusing.

The fixedly end cap (13) of fuse is positioned at the outer side And of weld-ring (12) and fixedly secures on the outer wall of shell (1), and And makes fixedly that the inner surface and weld-ring (12) outer surface of end cap (13) keep in touch.

Travel mechanism is by being fixed on centre bore (1c) axis (11) at the bottom of the shell bucket in the stopping means of fuse, be contained in the axle (11) and can be around axle (11) rotation, a rotating end cap (4) of band groove and being contained in spool (11), be positioned at the insulation board (3) of the bucket end Zhi Jian And band through hole of rotating end cap (4) and shell (1), rotating end cap (4) and insulation board (3) are connected mutually, and one passed the through hole of insulation board (3) and a part is stayed outside the hole, and the iron bullet (5) that passes part and rotating end cap (4) contact grooves constitutes.Like this, when rotating travel mechanism, its iron bullet (5) skid is successively gone in the groove of each conducting strip (2), guarantees that a unit fuse is by effect places in circuit such as rotating end caps.

The lamination insulation board that covers copper sheet above also available one of the rotating disk part that is connected as rotating end cap (4) and insulation board (3) replaces.

In order in time to find and write down single fusing part fusing situation of dividing, the same radial direction of rotating end cap (4) and insulation board (3) except iron bullet (5), also be provided with one with the corresponding monitor window of weld tabs (6) (15), the weld tabs (6) after the fusing also can be taken out from this window.

The unit fusing part of group's core formula fuse is generally got odd number.Arc extinguishing can adopt quartz sand (not drawing among the figure).Conducting strip (2) is end cap (13) fixedly, rotating end cap (4), and weld tabs (6) and welding column (9) available metal material are made, and preferably use copper material.

Fuse-link of the present invention is after new improvement has been done on the characteristic basis that keeps single fuse, a fuse can repeatedly be used, thereby avoided the mistake that replaces with, raw material and maintenance time have been saved, guarantee that fuse mates correctness in circuit and security ， And is that condition created in automatic monitoring and record.

Claims

1, a kind of fuse comprises shell (1), fixing end cap (13), fusible link (10), fusing indication silk (8) and weld tabs (6), it is characterized in that also containing a rotating end cap (4), two above conducting strips (2), weld-ring (12), welding column (9) and by groove (1a) between having more than two in the said shell (1), be located at that one group of fusing material (comprising fusible link (10) and fusing indication silk (8)) between the conducting strip (2) at a groove (1a) two ends and the weld-ring node (12a) is interconnected to constitute unit fusing part and by the stopping means of conduction contact between rotating end cap (4) and the conducting strip (2), said device comprises that rotating end cap (4) is towards the travel mechanism of barrel end one side protrusion of shell (1) and the interaction between the upper groove of conducting strip (2) opposite flank.

2, fuse according to claim 1, it is characterized in that said shell (1) for drum shape, on the said shell (1) between groove (1a) be along equally distributed 2 above grooves on the axial inwall of its shell (1).On shell (1) bucket bottom surface, have and a groove (1a) respective numbers, the approximate through hole (1b) that leads to a groove (1a) axial centre, said conducting strip (2) are positioned over the bucket end of shell (1) near in through hole (1b) groove.

3, fuse according to claim 1, it is characterized in that said conducting strip (2) one ends have a groove, the other end has a through hole, said welding column (9) is a tubular rivet, its can be simultaneously by be positioned at shell (1) bucket at the end conducting strip (2) through hole and through hole (1b) the And of shell (1) bucket copy for the record or for reproduction body stretch into a little shell between groove (1a), the other end keeps the through hole outside plane contact with conducting strip (2).

4, fuse according to claim 1 is characterized in that said weld-ring (12) is the copper ring of the band dentation in-flanges (12a) that equates with a groove quantity of an openend that is positioned at shell (1).

5, fuse according to claim 1, it is characterized in that wherein the unit fuse body is by both sides that are welded in the detent projection of weld-ring (12) respectively of the fusible link (10) in the groove (1a) and the indication silk (8) that fuses, the other end is welded in the contacted welding column of conducting strip (2) (9) sidewall respectively and passes the downside formation of the eyelet welding of welding column (9) hole and spring (7) in weld tabs (6).

6, fuse according to claim 5 is characterized in that wherein fusible link (10) indicates silk (8) position at relative central space center (1d) in a groove (1a) to be not less than the size of spiral similar model cavity with fusing.

7, fuse according to claim 1 is characterized in that wherein rotating end cap (4), fixing end cap (13), and conducting strip (2), welding column (9), weld tabs (6) is metallic, the most handy copper material.

8, according to the described fuse of claim 1～7, it is characterized in that said travel mechanism is by the axle (11) in the bucket end centre bore that is fixed on shell (1), being positioned at axle (11) And can be around rotating, the rotating end cap (4) that has groove, the band through hole insulation board (3) that under rotating end cap (4), is connected and pass its through hole but some is stayed outside the hole towards shell one side And and rotating end cap (4), and the iron bullet (5) that touches that can link to each other with rotating end cap (4) groove constitutes.Like this, when rotating travel mechanism, its iron bullet (5) is contacted one by one with conducting strip (2).

9, fuse according to claim 8, (15 〕， And make this window corresponding with weld tabs (6) to it is characterized in that establishing a monitor window with respect to the same radial direction of iron bullet (5) on said rotating end cap (4) and insulation board (3).

10, fuse according to claim 9 is characterized in that covering above also available one of the rotating disk that said rotating end cap (4) and insulation board (3) be connected the lamination insulation board of copper sheet.