CN205881849U - Low pressure fuse - Google Patents

Abstract

The utility model discloses a low pressure fuse relates to low pressure electrical components field, low pressure fuse includes binding post, insulating tube body, fuse -element, collets, pull rod, spring, insulating cover, the fuse -element both ends be equipped with binding post, the fuse -element is established in insulating tube body, the symmetry is fixed with two collets on the fuse -element, be equipped with the bracing piece on the collets, the spring passes through the pull rod and is connected with the other end of two bracing pieces, the outside of spring is equipped with insulating cover, the both ends of insulating cover are fixed on two bracing pieces, the elasticity that it utilized the spring increases the pulling force at fuse -element both ends, makes the fuse -element fuse sooner, protection circuit better, and have simple structure, set up reasonable, cost of manufacture low grade advantage.

Description

A kind of low-tension fuse

Technical field

This utility model relates to low voltage component field, is specifically related to a kind of low-tension fuse.

Background technology

Fuse refers to when electric current exceedes setting, makes melt fuse with the heat that itself produces, the one of disconnecting circuit Plant electrical equipment.Fuse be exceed setting a period of time according to electric current after, with himself produce heat make Melt molten, thus Circuit is made to disconnect.

When short circuit, the electrical equipment on circuit can be caused damage by melt in fuse fusing slowly, and existing quickly Fuse cost of manufacture is high, and structure is complicated.

Utility model content

The purpose of this utility model is the defect for prior art and deficiency, it is provided that a kind of simple in construction, design are closed Reason, low-tension fuse easy to use, its energy quick fuse, cost of manufacture is low.

For achieving the above object, the technical solution adopted in the utility model is: a kind of low-tension fuse, including terminals Son, insulation body, melt, collets, pull bar, spring, insulation sleeve；Described melt two ends are provided with binding post；Melt is located at In insulation tube body；Two collets it are symmetrically fixed with on melt；Collets are provided with support bar；Spring is propped up by pull bar and two The other end of strut connects；The outside of spring is provided with insulation sleeve；The two ends of insulation sleeve are fixed on two support bars；

Preferably, described melt two ends are thick, middle thin；

Preferably, described collets are fixed on the thick melt portion of melt；

Preferably, described insulation body comprises ceramic separator and insulative pipe sleeve；Insulative pipe sleeve is elastic flame fire proofed wood Material pipe box；

Preferably, it is provided with quartz sand in described insulation tube body；

Preferably, described insulation sleeve is elastic flame refractory insulation set；

After using said structure, this utility model has the beneficial effect that a kind of low-tension fuse described in the utility model, it The elastic force utilizing spring increases the pulling force at melt two ends, makes melt faster to fuse, preferably protection circuit, and has structure letter Singly, the advantages such as reasonable, cost of manufacture is low are set.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only It is embodiments more of the present utility model, for those of ordinary skill in the art, before not paying creative work Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

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

Description of reference numerals:

1, insulation sleeve；2, insulative pipe sleeve；3, ceramic separator；4, binding post；5, collets；6, melt；7, spring；8, draw Bar；9, insulation body；10, support bar.

Detailed description of the invention

Below in conjunction with the accompanying drawings, this utility model is further described.

Referring to shown in Fig. 1, this detailed description of the invention the technical scheme is that a kind of low-tension fuse, including terminals Son 4, insulation body 9, melt 6, collets 5, pull bar 8, spring 7, insulation sleeve 1；Described melt 6 two ends are provided with binding post 4； Melt 6 is located in insulation body 9；Two collets 5 it are symmetrically fixed with on melt 6；Collets 5 are provided with support bar 10；Spring 7 It is connected by the other end of pull bar 8 with two support bars 10；The outside of spring 7 is provided with insulation sleeve 1；The two ends of insulation sleeve 1 are fixed On two support bars 10；

Preferably, described melt 6 two ends are thick, middle thin；

Preferably, described collets 5 are fixed on the thick melt portion of melt 6；

Preferably, described insulation body 9 comprises ceramic separator 3 and insulative pipe sleeve 2；Insulative pipe sleeve 2 is that elastic flame is resistance to Fire material pipe box；

Preferably, it is provided with quartz sand in described insulation body 9；

Preferably, described insulation sleeve 1 is elastic flame refractory insulation set；

The spring of this detailed description of the invention is in impaction state, the insulation sleeve 1 outside spring 7 ensure spring 7 and melt 6 every From non-conductive；When short circuit, raise at the increase of melt 6 electric current, heat, and then during fusing, due to spring 7 always Being in impaction state, spring 7 bounce-back makes collets 5 stretch toward two ends, and collets 5 stretch the two ends of thin melt, make melt 6 accelerate Fusing；Owing to insulative pipe sleeve 2 is elastic flame refractory material pipe box, make the space that melt 6 has past two ends to stretch, spring 7 anti- Bullet effect is more preferable, and melt 6 fuses faster.

The above, is only in order to the technical solution of the utility model to be described and unrestricted, those of ordinary skill in the art couple Other amendment or equivalent that the technical solution of the utility model is made, without departing from technical solutions of the utility model Spirit and scope, all should contain in the middle of right of the present utility model.

Claims (6)

1. a low-tension fuse, it is characterised in that include binding post, insulation body, melt, collets, pull bar, spring, absolutely Edge set；Described melt two ends are provided with binding post；Melt is located in insulation tube body；Two insulation it are symmetrically fixed with on melt Block；Collets are provided with support bar；Spring is connected by the other end of pull bar and two support bars；The outside of spring is provided with insulation Set；The two ends of insulation sleeve are fixed on two support bars.

A kind of low-tension fuse the most according to claim 1, it is characterised in that described melt two ends are thick, middle thin.

A kind of low-tension fuse the most according to claim 1, it is characterised in that described collets are fixed on the thick of melt Melt portion.

A kind of low-tension fuse the most according to claim 1, it is characterised in that described insulation body comprises ceramic separator And insulative pipe sleeve；Insulative pipe sleeve is elastic flame refractory material pipe box.

A kind of low-tension fuse the most according to claim 1, it is characterised in that be provided with quartz sand in described insulation tube body.

A kind of low-tension fuse the most according to claim 1, it is characterised in that described insulation sleeve is that elastic flame is fire-resistant Insulated with material set.