CN2264973Y

CN2264973Y - Multi-core fuse

Info

Publication number: CN2264973Y
Application number: CN 95244508
Authority: CN
Inventors: 何俊生
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-08-09
Filing date: 1995-08-09
Publication date: 1997-10-15
Anticipated expiration: 2005-08-09

Abstract

The utility model relates to a multi-core fuse, which comprises a ceramic casing, a top cover and a bottom cover which respectively sheath the upper end and the lower end of the ceramic casing, and a plurality of fuse, wherein, an optical indicator is arranged in the central shaft hole of the ceramic casing; fuses are arranged in a plurality of division groove holes; fuses are respectively connected with a copper sheet which is arranged on the upper end surface and a copper sheet which is arranged on a lower base; a contacting copper block is arranged in the top cover, and a position selector is connected with the copper sheet which is arranged on the upper end surface; both ends of the optical indicator are respectively connected with the copper sheet and a copper ring which are arranged on the lower base; the top cover is connected with the copper sheet and the copper ring which are arranged on the upper end surface; the copper sheet which is arranged on the lower base is connected with the bottom cover. The utility model has the advantages of convenient line inspection and repairing, multi-fuse multiplexing, and raw material saving.

Description

Multicore formula fuse

The utility model relates to a kind of improvement of fuse, specifically, is a kind of convertible contact-type multicore formula fuse.

At present, various electric equipments, the fuse that uses on the electronic instrument all are the single core type structures, and it includes the thick ceramic shell in the little centre of central shaft hole and two promptly disposable discarded type fuse.The overhead guard of conduction and end cover, fuse place arbor hole among the ceramic shell, and ceramic shell is hooked in the two ends bending and pressed by overhead guard and end cover.The advantage of this single core type fuse is simple in structure, and contact is good, and its shortcoming is that the indication of opening circuit is not obvious, and be disposable discarded type structure, if be difficult in time keep in repair when not having acknowledgment copy at one's side, and wastes raw material.

It is good that the purpose of this utility model provides a kind of conversion contact, and the multicore formula fuse of the indication of opening circuit is arranged.

In order to reach the purpose of this utility model; it comprises the ceramic shell with the identical external form of prior art; overhead guard and end cover; but this ceramic shell is provided with central shaft hole and several cut apart slotted eye; the upper surface of ceramic shell is the separation trough structure; and a cannelure is arranged between central shaft hole and separation trough; after fuse places and cuts apart slotted eye; the lower end is welded on the copper sheet of going to the bottom; and the upper end is welded on the upper surface copper sheet that is placed in the separation trough; optical indicator is made of light-emitting diode and the series connection of current-limiting protection resistance; the free end of resistance is welded on the copper sheet of going to the bottom; and the free pin of light-emitting diode is welded and is being placed on the copper ring of cannelure; current-limiting protection resistance is placed in the central shaft hole; light-emitting diode then exposes the upper surface of ceramic shell from central shaft hole; cover the lower end of ceramic shell and contact down with the copper sheet of going to the bottom; and there is a location contact block inside of overhead guard; and the separation trough size of the upper surface of itself and ceramic shell is suitable; overhead guard has centre bore; when cover is gone on the ceramic shell end; only contact with end face copper sheet on the way, and and copper ring be connected.Therefore, the utility model is applied in the electric equipment, if the light of short circuit or overload fuse indication light-emitting diode is promptly lighted, loop voltage mainly is distributed on the optical indicator, electric equipment quits work, and at this moment, can borrow electrician's screwdriver along groove outside the ceramic shell upper end overhead guard to be taken off, make the contact copper billet facing to behind another separation trough again with on the overhead guard cover, this fuse can be inserted in the electric equipment work loop again.

The utility model advantage is: 1. save raw material, cost of the present utility model is a little more than single core pattern fuse, but owing to can repeatedly use, therefore, obviously reduced expense; 2. the indication of significantly opening circuit is arranged, be convenient to the maintenance circuit inspection; 3. help on-the-spot emergency maintenance, one tunnel blown fuse, can use another road fuse easily, and need not often to carry spare fuse.

The utility model is implemented by the following drawings.

Fig. 1 is a perspective view of the present utility model.

Fig. 2 is a perspective exploded view of the present utility model.

Fig. 3 is a perspective diagram of the present utility model.

Fig. 4 is an overhead guard floor map of the present utility model.

Fig. 5 is cross section, a upper end of the present utility model schematic diagram.

Below we provide better embodiment of the utility model according to Fig. 1～Fig. 5, and, further provide ins and outs of the present utility model in conjunction with to the description of this embodiment.

As depicted in figs. 1 and 2, this use is novel to comprise ceramic shell 1, overhead guard 2, end cover 3 and fuse 4, and the optical indicator 8 that also has upper surface copper sheet 5, copper ring 6, goes to the bottom copper sheet 7 and be concatenated into by light-emitting diode 80 and current-limiting protection resistance 81.

As shown in figures 1 and 3, ceramic shell 1 of the present utility model is broad in the middle and cylinder type that two is little, and overhead guard 2 and end cover 3 tightly are placed in the top and the bottom of this housing 1 respectively.Be provided with the central shaft hole of settling optical indicator 8 and the slotted eye of cutting apart of putting fuse 4 in this housing 1.Have four in the present embodiment and cut apart slotted eye, to using four road fuses 4.

As Fig. 2 and shown in Figure 5, the top end face of this housing 1 is the separation trough structure, and each cuts apart slotted eye a corresponding separation trough, and its built-in end face copper sheet 5 of putting forms a cannelure between separation trough and central shaft hole.Put copper ring 6 on it.From Fig. 2 as seen, thus end is welded on and makes on the shrinkage pool 51 on the upper surface copper sheet 5 that the surface is the integral planar shape on the upper surface 5 on the fuse 4.The copper sheet 7 of going to the bottom is provided with welding shrinkage pool (looking up from bottom surface) 71, has 5 shrinkage pools 71 in the present embodiment, the free end of the current-limiting protection resistance 81 of end and formation optical indicator under corresponding four fuses 4.Like this, the lower surface of the copper sheet 7 of going to the bottom after welding is the integral planar shape, makes it have good face to contact with end cover 3.

At last, consult clearly to be provided with in Fig. 2 and Fig. 4 overhead guard 2 and contact copper billet 20, its size is suitable with the separation trough of the upper surface of housing 1.After overhead guard 2 cover was gone up, this contact copper billet 20 was positioned and contacts with 5 one-tenth faces of end face copper sheet on the way, and the while also contacts with copper ring 6.

In sum, overhead guard 2 upper surface copper sheets 5, one road fuse 4, the short circuit path that the copper sheet 7 and the end cover 3 of going to the bottom constitutes optical indicator 8.In the utility model is packed the electric equipment loop into, play the protective effect of short circuit or overload, in case fuse 4 is fused, then optical indicator 8 in time starts light, light-emitting diode 80 is lighted, and illustrates that guilty culprit loop one is the equipment at place.

Also to point out, also be provided with water jacket 10 on the end outer surface on the housing 1 in the present embodiment, so that after 4 fusing of one road fuse, with screwdriver overhead guard is opened, contact copper billet 20 on it is locked it after on the end face copper sheet 5 on inserting in another road separation trough, reaches the purpose of using another road fuse 4.

The point of noting when welding, to shrinkage

pool

71 and 51, should make scolding tin that they are filled and led up, and purpose is in order to reach the purpose of face contact.

Claims

1. multicore formula fuse, comprise ceramic shell (1) and shroud its up and down the conduction overhead guard (2) at two ends and end cover (3) and fuse (4) of being placed in this housing (1) inside, its special card is to offer in this ceramic shell (1) central shaft hole and several cut apart slotted eye, and end face is provided with separation trough and between separation trough and central shaft hole cannelure is set thereon; Optical indicator (8) is arranged in this central shaft hole, and by being placed in the copper ring (6) in the cannelure and adhering on that end copper sheet (7) is connected and fixed under this housing (1) lower surface, its light indicating section exposes overhead guard (2); Fuse (4) is placed through this respectively to be cut apart in the slotted eye, and is connected and fixed with the copper sheet (7) of going to the bottom by the upper surface copper sheet (5) that is placed in the separation trough; Be provided with contact copper billet (20) and center drilling in the overhead guard (2), behind the end, contact copper billet (20) contacts with upper surface copper sheet (5) location, and contacts with copper ring (6) on overhead guard (2) the cover over body case (1); After end cover (3) cover covered in and holds under the housing (1), it contacted with the copper sheet of going to the bottom (7).

2. according to the described fuse of claim 1; It is characterized in that the end is provided with groove (10) outside the unlatching overhead guard (2) on the ceramic shell (1).

3. according to the described fuse of claim 1, it is characterized in that optical indicator (8) is made of light-emitting diode (80) and current-limiting protection resistance (81) serial connection, light-emitting diode (80) exposes end face on the overhead guard (2).

4. according to the described fuse of claim 1, the copper sheet (7) that it is characterized in that going to the bottom is provided with the fixedly concave hole (71) of fuse (4) and optical indicator (8), and is filled and led up by scolding tin when welding.

5. according to the described fuse of claim 1, it is characterized in that upper surface copper sheet (5) is provided with the fixedly concave hole (51) of fuse (4), and when welding, fill and lead up by scolding tin.