CN102194620A - Fuse and manufacturing method of the same - Google Patents
Fuse and manufacturing method of the same Download PDFInfo
- Publication number
- CN102194620A CN102194620A CN201110051563XA CN201110051563A CN102194620A CN 102194620 A CN102194620 A CN 102194620A CN 201110051563X A CN201110051563X A CN 201110051563XA CN 201110051563 A CN201110051563 A CN 201110051563A CN 102194620 A CN102194620 A CN 102194620A
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- fuse
- recess
- melting
- low
- fuse element
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Abstract
The invention discloses a fuse, which comprises a fuse element. A hot point part is arranged in a part of the fuse element. The hot point part has a section area smaller than the section area of the other parts of the fuse element and is provided with a concave part. A metal with a low melting point is arranged in the concave part.
Description
Technical field
The present invention relates to a kind of by the fuse that low-melting-point metal forms being set at the fuse element place, and the method for making this fuse.
Background technology
Think that disclosed fuse is a kind of like this fuse in the patent documentation 1.As shown in figure 10, fuse 50 comprises as the plate 51 that is formed by copper alloy of fuse element and by at plate 51 places the ashbury metal sheet 60 that low-melting-point metal forms being set.Plate 51 has the shape with the zigzag bending.Plate 51 is provided with the narrow width portion 52 with narrow width, this narrow width portion 52 be positioned at than vertical actual size of plate 51 with entad more by a last side.Narrow width portion 52 has the cross section littler than the remainder of plate.Ashbury metal sheet 60 is by being fixed near that part of place clamping on narrow width portion 52 downsides.Set plate 51 by this way, that is, the upper portion 51A that is positioned at upside about ashbury metal sheet 60 has big resistance value and the lower portion 51B that is positioned at downside about this ashbury metal sheet has the small resistor value.
In previous constructions, when the electric current that is equal to or greater than predetermined value flowed, with respect to the ashbury metal sheet 60 as the border, the temperature of upper portion 51A increased more efficiently than lower portion 51B.In addition, thus because the tin in the ashbury metal sheet 60 spreads the resistance value that has increased this plate 51 in plate 51, so strengthened the temperature increase of plate.In addition, because the resistance value of narrow width portion 52 is at first greater than the fact of the resistance value of plate remainder, in addition because the fact that the resistance value of described narrow width portion increases owing to the diffusion of tin, it is bigger than the living heat of plate remainder that the living heat of this narrow width portion becomes, thereby plate fuses at narrow width portion 52 places.
By this way, in the example of aforesaid prior art, when the big electric current that is equal to or greater than predetermined value flowed, plate can fuse at narrow width portion 52 places with being determined.Thereby, can improve visuality and judge whether fuse 50 is fused.
[patent documentation 1] Japanese patent application publication No. 2004-127701
Summary of the invention
Yet, require fuse 50 according to aforementioned prior art example to be used for the clamping operation that forms the press process of narrow width portion 52 and be used for ashbury metal sheet 60 is fixed in plate 51 at plate 51 places.Because each of these operations all is a troublesome work of utilizing lathe, so produced the high problem of machining cost.
Therefore, a useful aspect of the present invention provides the method for the low manufacturing fuse of a kind of fuse and a kind of machining cost.
According to an aspect of the present invention, provide a kind of fuse, comprising:
Fuse element;
Focus portion, be arranged on described fuse element part place, have the littler sectional area of sectional area than the other parts of fuse element, and be formed with recess; And
Low-melting-point metal is arranged in the described recess.
The whole periphery of described recess can by wall around.
Described fuse element can be the heart yearn that connects pair of terminal.
Described recess can be arranged on each surface of the apparent surface of described fuse element.
According to a further aspect in the invention, provide a kind of manufacture method of fuse, comprising:
Form the thermoforming operation of focus portion at the part place of the fuse element of described fuse, described focus portion has the littler sectional area of sectional area than the other parts of fuse element, and is formed with recess; And
The welding operation comprises
The low-melting-point metal sheet is set in described recess; And
To the heating of described low-melting-point metal sheet, so that metal molten and flowing in the described recess.
Described thermoforming operation can comprise: the mid portion of fuse element is clipped between the pair of electrodes, and each electrode all has lug boss; And electric current is flowed so that described fuse element is heated between described electrode.
According to the present invention,, just can form described fuse by only carrying out the operation of focus portion being set and making low-melting-point metal fusing then and flow into welding operation in the recess of described focus portion at the fuse element place.Thereby, because the manufacturing procedure of fuse element is a single homework only, so can make fuse with low processing cost.
According to the present invention, can make wire fuse with low processing cost.
According to the present invention, because the part that low-melting-point metal can be melted is arranged on the place, both sides, thus location can easily carry out the welding operation time or the like, thus the technology machinability can be promoted.
According to the present invention,, just can form fuse by only carrying out the thermoforming operation of focus portion being set and making low-melting-point metal fusing then and flow into welding operation in the recess of focus portion for example at the fuse element place.Thereby, because the manufacturing procedure of fuse element only is the thermoforming operation, so can make fuse with low processing cost.
Description of drawings
Figure 1A is the perspective view according to the wire fuse of the embodiment of the invention.
Figure 1B is the cutaway view along the wire fuse of the cutting of the line A-A among Figure 1A.
Fig. 1 C is the enlarged drawing of the major part of Figure 1B.
Fig. 2 A is the vertical view of wire fuse.
Fig. 2 B is the front view of wire fuse.
Fig. 3 A is the perspective view of wire fuse in first being processed.
Fig. 3 B is the cutaway view along the wire fuse of the cutting of the line B-B among Fig. 3 A.
Fig. 4 A be before the thermoforming operation at once, the perspective view of wire fuse.
Fig. 4 B be before the thermoforming operation at once, the cutaway view of wire fuse.
Fig. 5 is the perspective view of the wire fuse in the thermoforming job state.
Fig. 6 A is after the thermoforming operation, the perspective view of the major part of wire fuse.
Fig. 6 B is the cutaway view along the wire fuse of the cutting of the line C-C among Fig. 6 A.
Fig. 7 shows the perspective view of the state in the recess that the low-melting-point metal sheet is placed on wire fuse.
Fig. 8 shows the perspective view of the state of the low-melting-point metal sheet fusing on the wire fuse.
Fig. 9 is a cutaway view of revising the wire fuse of example according to an embodiment of the invention.
Figure 10 is the schematic diagram of fuse of the example of prior art.
Embodiment
To embodiments of the invention be described based on accompanying drawing.
Shown in Figure 1A to Fig. 2 B, comprise as the heart yearn 2 of fuse element and as the LA terminal 10 of the pair of terminal at the two ends that are individually fixed in heart yearn 2 as the wire fuse 1A of fuse.Heart yearn 2 connects this to LA terminal 10.
Installing hole 10a as opening is arranged on each LA terminal 10 place.Utilizing installing hole 10a that wire fuse 1A is fixed into is connected between mains side and the load side electrical circuitry.Each the LA terminal 10 all clamping by thermal welding and clamping section 10b is connected in a corresponding end in the two ends of heart yearn 2.
Low-melting-point metal 5 is placed in one of them recess of the recess 4 at two opposite surfaces place.For example, this low-melting-point metal 5 is formed by ashbury metal.Contact surface between low-melting-point metal 5 and the focus portion 3 is fused.
Next, will explain at the manufacture process of the focus portion 3 in the manufacture method of wire fuse 1A.Shown in Fig. 3 A and 3B, the wire fuse 1A before the focus operation is formed by heart yearn 2 and the pair of L A terminal construction that is individually fixed in the two ends of this heart yearn 2.
At first, shown in Fig. 4 A and Fig. 4 B, utilize pair of electrodes 11 to carry out the thermoforming operation.The end surface of each electrode 11 all has lug boss 11a and flat surfaces 11b, thereby form the shape of projection on the whole, the center of described lug boss 11a on the Width of electrode 11 is along the longitudinal extension of this electrode 11, and described flat surfaces 11b is formed on the place, both sides of lug boss.As shown in Figure 5, the mid portion of the heart yearn 2 of wire fuse 1A is sandwiched in this between the electrode 11, electric current is flowed between this is to electrode 11, thereby heart yearn 2 is applied Joule heat.Thereby, make heart yearn 2 deliquescing by Joule heat, and be deformed into this terminal end shape and be complementary electrode 11.According to described thermoforming operation, shown in Fig. 6 A and 6B, heart yearn 2 vertically on the pars intermedia office formed focus portion 3.
Next, as shown in Figure 7, low-melting-point metal sheet 5A is installed in the recess 4 of focus portion 3.Then, when low-melting-point metal sheet 5A is heated, this low-melting-point metal sheet 5A fusing.Because the low-melting-point metal 5 that has melted is a liquid, so this low-melting-point metal flow in each part in the recess 4, and be placed in like this in the recess 4, that is, be filled in like this in the recess 4.By this way, low-melting-point metal 5 is placed in the recess 4 as shown in Figure 8.Contact surface between low-melting-point metal 5 and the focus portion is fused.
When the electric current that is equal to or greater than predetermined value flow among the wire fuse 1A that makes like this, low-melting-point metal 5 was dispersed in the focus portion 3.Thereby, because the increase of the resistance value of focus portion 3, so the temperature of this focus portion raises.Because the resistance value of focus portion 3 is at first greater than the resistance value of heart yearn remainder, so except the distribution owing to low-melting-point metal 5 makes its resistance value increase, the heat that generates from this focus portion also becomes bigger than the heat of heart yearn remainder generation, thereby heart yearn fuses at focus portion 3 places with being determined.
As mentioned above, construct wire fuse 1A with heart yearn 2 in the mode that its part place is provided with the focus portion 3 with sectional area littler than this heart yearn remainder and low-melting-point metal 5 is filled in the recess 4.Thereby, by only carrying out the thermoforming operation of focus portion 3 being set and making low-melting-point metal 5 fusing then and the welding operation that flow in the recess 4 of focus portion 3 just can emerge wire fuse at heart yearn 2 places.Because manufacturing procedure has only the thermoforming operation, so can make wire fuse with low processing cost.
Although described embodiment has been described at situation about applying the present invention to as the wire fuse 1A of fuse,, the present invention certainly is applied to the fuse except wire fuse 1A.
Because recess 4 is separately positioned on the both side surface place of heart yearn 2, so can make the low-melting-point metal 5 that can be fused be arranged on the place, both sides.Thereby, the location in the time of can easily carrying out the welding operation etc., thus the technology machinability can be promoted.
The whole periphery of each recess 4 all by the sidewall 3a at the both sides of focus portion 3 places and this focus portion 3 vertically on the place, two ends boundary wall 3b institute around.Thereby, owing to, this low-melting-point metal 5 can be placed in the recess 4, so can be with the fixed-site of low-melting-point metal position at recess 4 by making low-melting-point metal under the molten state flow in the recess and making this metal-cured.Therefore, can promote the reliability of wire fuse 1A.
In Fig. 9, be with difference according to the wire fuse 1B that revises example according to the wire fuse of aforementioned first embodiment, in each recess 4 at two face side places of focus portion 3, all place low-melting-point metal 5.Because it is identical with first embodiment to revise all the other structures of example, thus the part identical with first embodiment represent by common symbol, omit it simultaneously and illustrate to avoid repeat specification.
In revising embodiment, also can obtain similarly to act on and effect with first embodiment.
Although for certain preferred embodiment diagram and described the present invention, it will be apparent for a person skilled in the art that, can do variations and modifications based on religion purport of the present invention.It is evident that these variations and modification should drop in spirit of the present invention, scope and the intention that is defined by the following claims.
Claims (6)
1. fuse comprises:
Fuse element;
Focus portion, this focus portion be arranged on described fuse element part place, have the littler sectional area of sectional area than the other parts of described fuse element, and be formed with recess; And
Low-melting-point metal, this low-melting-point metal is arranged in the described recess.
2. fuse according to claim 1, wherein
The whole outer periderm wall of described recess around.
3. fuse according to claim 1, wherein
Described fuse element is the heart yearn that connects pair of terminal.
4. according to any described fuse of claim 1 to 3, wherein
Described recess is arranged on each surface of the apparent surface of described fuse element.
5. the manufacture method of a fuse comprises:
Form the thermoforming operation of focus portion at the part place of the fuse element of described fuse, described focus portion has the littler sectional area of sectional area than the other parts of described fuse element, and is formed with recess; And
The welding operation comprises
The low-melting-point metal sheet is set in described recess; And
To the heating of described low-melting-point metal sheet, so that metal molten and flowing in the described recess.
6. the manufacture method of fuse according to claim 5, wherein
Described thermoforming operation comprises:
The mid portion of described fuse element is clipped between the pair of electrodes, and each electrode all has lug boss; And
Electric current is flowed between to electrode with to described fuse element heating described.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010046645A JP5583991B2 (en) | 2010-03-03 | 2010-03-03 | Fuse and method for manufacturing fuse |
| JP2010-046645 | 2010-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102194620A true CN102194620A (en) | 2011-09-21 |
| CN102194620B CN102194620B (en) | 2014-06-25 |
Family
ID=44602495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110051563.XA Expired - Fee Related CN102194620B (en) | 2010-03-03 | 2011-03-03 | Fuse and manufacturing method of the same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5583991B2 (en) |
| CN (1) | CN102194620B (en) |
| BR (1) | BRPI1101112A2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246959A (en) * | 2012-02-15 | 2014-12-24 | 爱姆提耶公司 | Fuse |
| CN104471668A (en) * | 2012-07-18 | 2015-03-25 | 矢崎总业株式会社 | Electrical wiring fuse |
| CN104641443A (en) * | 2012-10-17 | 2015-05-20 | 矢崎总业株式会社 | Electrical wire fuse |
| CN105518820A (en) * | 2013-08-28 | 2016-04-20 | 迪睿合株式会社 | Fuse element and fuse device |
| CN108140508A (en) * | 2015-10-27 | 2018-06-08 | 迪睿合株式会社 | Fuse element |
| CN108321039A (en) * | 2018-01-26 | 2018-07-24 | 俞东 | Fuse element and preparation method thereof |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5955597B2 (en) * | 2012-03-21 | 2016-07-20 | 矢崎総業株式会社 | Electric wire fuse and method of manufacturing electric wire fuse |
| JP6055196B2 (en) * | 2012-03-29 | 2016-12-27 | 矢崎総業株式会社 | Electric wire fuse and method of manufacturing electric wire fuse |
| JP6148474B2 (en) * | 2013-01-24 | 2017-06-14 | 矢崎総業株式会社 | Fusible link unit |
| JP6034710B2 (en) * | 2013-01-31 | 2016-11-30 | 矢崎総業株式会社 | Electric wire fuse and method of manufacturing electric wire fuse |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08190809A (en) * | 1995-01-11 | 1996-07-23 | Sumitomo Electric Ind Ltd | Wire with fuse |
| JP2005158352A (en) * | 2003-11-21 | 2005-06-16 | Jun Mizuno | Electric wire with fuse |
| JP2009099372A (en) * | 2007-10-17 | 2009-05-07 | Taiheiyo Seiko Kk | Fuse element and fusible link using the fuse element |
| CN101641758A (en) * | 2007-03-26 | 2010-02-03 | 罗伯特·博世有限公司 | Fusible alloy element, thermal fuse with fusible alloy element and method for producing a thermal fuse |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5489236A (en) * | 1977-12-27 | 1979-07-16 | Mitsubishi Electric Corp | Fuse element |
| JP3562685B2 (en) * | 1996-12-12 | 2004-09-08 | 矢崎総業株式会社 | Fuse and manufacturing method thereof |
| JPH1110203A (en) * | 1997-04-30 | 1999-01-19 | Hino Motors Ltd | Manufacture of metal plate having unequal thickness |
| JP4513030B2 (en) * | 2007-03-29 | 2010-07-28 | 日本電信電話株式会社 | Fuse element |
-
2010
- 2010-03-03 JP JP2010046645A patent/JP5583991B2/en not_active Expired - Fee Related
-
2011
- 2011-03-02 BR BRPI1101112 patent/BRPI1101112A2/en not_active Application Discontinuation
- 2011-03-03 CN CN201110051563.XA patent/CN102194620B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08190809A (en) * | 1995-01-11 | 1996-07-23 | Sumitomo Electric Ind Ltd | Wire with fuse |
| JP2005158352A (en) * | 2003-11-21 | 2005-06-16 | Jun Mizuno | Electric wire with fuse |
| CN101641758A (en) * | 2007-03-26 | 2010-02-03 | 罗伯特·博世有限公司 | Fusible alloy element, thermal fuse with fusible alloy element and method for producing a thermal fuse |
| JP2009099372A (en) * | 2007-10-17 | 2009-05-07 | Taiheiyo Seiko Kk | Fuse element and fusible link using the fuse element |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104246959A (en) * | 2012-02-15 | 2014-12-24 | 爱姆提耶公司 | Fuse |
| CN104471668A (en) * | 2012-07-18 | 2015-03-25 | 矢崎总业株式会社 | Electrical wiring fuse |
| CN104641443A (en) * | 2012-10-17 | 2015-05-20 | 矢崎总业株式会社 | Electrical wire fuse |
| CN105518820A (en) * | 2013-08-28 | 2016-04-20 | 迪睿合株式会社 | Fuse element and fuse device |
| TWI631590B (en) * | 2013-08-28 | 2018-08-01 | 迪睿合股份有限公司 | Fuse unit, fuse element |
| CN108140508A (en) * | 2015-10-27 | 2018-06-08 | 迪睿合株式会社 | Fuse element |
| CN108140508B (en) * | 2015-10-27 | 2020-01-17 | 迪睿合株式会社 | Fuse element |
| CN108321039A (en) * | 2018-01-26 | 2018-07-24 | 俞东 | Fuse element and preparation method thereof |
| CN108321039B (en) * | 2018-01-26 | 2020-03-17 | 俞东 | Fuse element and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI1101112A2 (en) | 2012-08-28 |
| JP2011181445A (en) | 2011-09-15 |
| CN102194620B (en) | 2014-06-25 |
| JP5583991B2 (en) | 2014-09-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20200303 |