CN201352536Y - Fuse for protecting semiconductor - Google Patents

Abstract

The utility model discloses a fuse for protecting semiconductor, which comprises a fuse tube, a fuse body and a touch cutter; a plurality of scratches in parallel distribution for spot welding positioning are arranged on the spot welding surface of the touch cutter, both ends of a plurality of fuse bodies are bent and welded on the corresponding scratches through spot welding. The fuse has simple structure and is convenient in mounting and facilitates the spot welding positioning of the fuse bodies through scratches so that the fuse bodies are maintained to be aligned; the temperature rising situation caused by overlapped fuse bodies is avoided, or the explosion caused by the pull arc generated from fused short circuit current, the stability of fuse is guaranteed, the service life of the fuse is also improved; the hole shape of the fuse body is changed so that the electric property is improved and the punch mould can be fabricated conveniently; besides, epoxy glass fiber reinforcement insulation tube is adopted to fabricate fuse tube for improving the high temperature resistance and corrosion resistance of fuse tube.

Description

The semiconductor protection fuse

Technical field

The utility model relates to the fuse technology, more particularly, relates to a kind of semiconductor protection fuse.

Background technology

Fuse is as the usefulness of the short-circuit protection of the complete set of equipments of rectifying installation and relevant device (comprising frequency converter, soft start etc.), semiconductor element and composition thereof.See also Fig. 1, shown in Figure 2; at present; common semiconductor protection generally includes fusion tube 11, is located at the melt 12 in the fusion tube 11 and is located at the contact knife 13 at fusion tube 11 two ends with fuse 10; the welding mask of contact knife 13 is provided with polygonal step 131; step 131 is provided with two borings 132; several pieces melts 12 and two ends bend respectively and put be welded in step 131 around, have ordered series of numbers diamond hole 121 on the every melt 12.And be to penetrate boring 132 and be connected and fixed respectively between two contact knifes 13, thereby provide support power for melt 12 by two support bars 14.But, in the practical set process, because its assembly precision is had relatively high expectations, and two support bars 14 add man-hour, easily can occur different in size, thereby cause contact knife 13 to be offset, make that the melt 12 of spot welding can't effectively align between two contact knifes 13, can cause the temperature rise of this fuse 10 to raise like this, cause stability decreases, fused short circuit current easily produces arcing when serious, finally set off an explosion, greatly reduce its useful life, in addition, what fusion tube 11 adopted is common insulated tube, and it is high temperature resistant and corrosion resistance is relatively poor.

The utility model content

At the above-mentioned assembly precision that exists in prior art shortcoming high and complicated, that melt is difficult for alignment and easily blasts; the purpose of this utility model provides a kind of semiconductor protection fuse; this fuse structure is simple, easy for installation, can help guaranteeing its stability.

For achieving the above object, the utility model adopts following technical scheme:

This semiconductor protection comprises fusion tube, is located at the melt in the fusion tube and is located at the contact knife at fusion tube two ends with fuse; the point face of weld of described contact knife is provided with several cut even and parallel distribution that is used for the spot welding location, and the two ends of several pieces melts all bend and put and are welded on the corresponding cut.

Have the ordered series of numbers circular hole on the described every melt.

Described fusion tube adopts epoxy glass fiber to strengthen around insulated tube.

In technique scheme; semiconductor protection of the present utility model comprises fusion tube, melt and contact knife with fuse; the point face of weld of contact knife is provided with several cut even and parallel distribution that is used for the spot welding location, and the two ends of several pieces melts all bend and put and are welded on the corresponding cut.This fuse structure is simple, easy for installation, can make things convenient for the spot welding location of melt by cut, thereby make and keep alignment between the melt, the temperature that can avoid causing because of the melt joining raises, or the arcing that fused short circuit current produces sets off an explosion, not only guaranteed the stability of fuse, but also improved its useful life; By changing the pass of melt, not only can improve its electrical property, but also be convenient to the making of perforating die; In addition, adopt epoxy glass fiber to strengthen and make fusion tube, can improve its high temperature resistant and decay resistance around insulated tube.

Description of drawings

Fig. 1 is the structure cross-sectional schematic of the semiconductor protection of prior art with fuse;

Fig. 2 is the cutaway view along A-A line among Fig. 1;

Fig. 3 is the structure cross-sectional schematic of semiconductor protection of the present utility model with fuse;

Fig. 4 is the cutaway view along B-B line among Fig. 2.

Embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

See also Fig. 3, shown in Figure 4, semiconductor protection of the present utility model is basic identical with fuse 20 and prior art, equally also comprises fusion tube 21, is located at the melt 22 in the fusion tube 21 and is located at the contact knife 23 at fusion tube 21 two ends.Different is, the point face of weld of the contact knife 23 of this fuse 20 has been cancelled original polygon step 131 and support bar 14 (seeing Fig. 1, Fig. 2), but the cut 231 that is used for the spot welding location of several even and parallel distribution is set on the some face of weld of contact knife 23, and the two ends of several pieces melts 22 all bend and direct spot welding on corresponding cut 231 (quantity that Figure 4 shows that melt 22 is six).So, not only simplified the structure of fuse 20 greatly, and reduced installation difficulty, 22 need of melt carry out spot welding by cut 231 to be fixed, and has guaranteed the even alignment that melt 22 spot welding are provided with, and the temperature that can avoid causing because of the melt joining raises, or cause arcing during fused short circuit current, even cause blast, not only guaranteed the stability of fuse 20, but also improved its useful life; Every melt 22 all adopts the fine silver processing and fabricating of 99.9% content, and have ordered series of numbers circular hole 221 on the melt 22, by changing original diamond hole 131 into circular hole 221 structures, not only can improve its electrical property, improve its voltage and current grade, but also can be convenient to the making of perforating die, greatly reduce difficulty of processing and cost.In addition, fusion tube 21 adopts epoxy glass fiber to strengthen around insulated tube, adopts the fusion tube 21 of this material to have good high temperature resistant and decay resistance.

In sum, compare fuse 20 simple in structure, processing and easy for installation of the present utility model, not only stable, the long service life of pre-arcing characterisitics, and its electrical property and high temperature resistant all good with decay resistance with fuse 10 with original semiconductor protection.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims (3)

1. semiconductor protection fuse, this fuse comprise fusion tube, be located at the melt in the fusion tube and be located at the contact knife at fusion tube two ends, it is characterized in that:

The point face of weld of described contact knife is provided with several cut even and parallel distribution that is used for the spot welding location, and the two ends of several pieces melts all bend and put and are welded on the corresponding cut.

2. semiconductor protection fuse as claimed in claim 1 is characterized in that:

Have the ordered series of numbers circular hole on the described every melt.

3. semiconductor protection fuse as claimed in claim 1 is characterized in that:

Described fusion tube adopts epoxy glass fiber to strengthen around insulated tube.

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