CN105261535A - Fusible alloy for temperature fuse, wires for temperature fuse, and temperature fuse - Google Patents
Fusible alloy for temperature fuse, wires for temperature fuse, and temperature fuse Download PDFInfo
- Publication number
- CN105261535A CN105261535A CN201510383118.1A CN201510383118A CN105261535A CN 105261535 A CN105261535 A CN 105261535A CN 201510383118 A CN201510383118 A CN 201510383118A CN 105261535 A CN105261535 A CN 105261535A
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- China
- Prior art keywords
- temperature fuse
- quality
- metal alloy
- fusible metal
- content
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/06—Fusible members characterised by the fusible material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuses (AREA)
Abstract
The invention provides a fusible alloy for a temperature fuse which is lead-free, cheap and has higher operating temperature (such as 180 DEG C-200 DEG C), wires for a temperature fuse, and a temperature fuse. The temperature fuse includes the fusible alloy. The fusible alloy includes bismuth, copper and other parts. The other parts include tin and inevitable impurities. The content of the bismuth is more than 5 mass% and less than 30 mass%, and the content of the copper is more than 0.1 mass% and less than 5 mass%.
Description
Technical field
The present invention relates to temperature fuse fusible metal alloy, temperature fuse wire rod and temperature fuse.
Background technology
In electronic equipment etc., the heating perceptually caused due to fault etc. thus block the overtemperature protection component serviceability temperature fuse of the conducting in loop etc.The temperature fuse of the fusible metal alloy that the temperature (high temperature) that is used in regulation fuses is described in patent documentation 1.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2005-29833 publication
Summary of the invention
the problem that invention will solve
All the time, at the operating temperature range (near 180 DEG C) of temperature fuse of the present invention, usually use the temperature fuse utilizing Sn-Pb alloy.With recent unleaded rule, as the alloy material that electronic component uses, seek lead-free material.
In above-mentioned patent documentation 1, describe the temperature fuse using the composition of In-Zn-Sn, the fusible metal alloy of operating temperature 160 DEG C ~ 190 DEG C.For the temperature fuse of patent documentation 1, for operating temperature range is also almost equal with the present invention and achieve unleaded temperature fuse.
But the temperature fuse of patent documentation 1 needs the indium (In) coordinating a great deal of, becomes the main cause of cost increase.Also for unleaded and be cheap and there is the temperature fuse of the operating temperature (such as 180 DEG C ~ 200 DEG C) of higher temperatures in prior art.
Therefore, the object of the present invention is to provide as unleaded and be cheap and there is the temperature fuse fusible metal alloy of the operating temperature of higher temperatures, temperature fuse wire rod and temperature fuse.
for the scheme of dealing with problems
In order to solve above-mentioned problem, the present invention relates to and comprise bismuth, copper and remainder, described remainder comprises tin and inevitable impurity, and the content of bismuth is more than 5 quality % and the content of below 30 quality %, copper is more than 0.1 quality % and the temperature fuse fusible metal alloy of below 5 quality %.
The present invention relates to the temperature fuse wire rod comprising above-mentioned temperature fuse fusible metal alloy.The present invention relates to temperature fuse, it possesses the temperature fuse element with above-mentioned temperature fuse wire rod.
the effect of invention
According to the present invention, can be provided as unleaded and do not use In (indium) therefore for cheap and have temperature fuse fusible metal alloy, temperature fuse wire rod and the temperature fuse of the operating temperature (such as 180 DEG C ~ 200 DEG C) of higher temperatures.
Accompanying drawing explanation
The B of A and Fig. 1 of Fig. 1 is the schematic sectional view of structure for illustration of the temperature fuse based on an embodiment of the invention and action.
Description of reference numerals
11 fusible metal alloy,
12 special resin,
13 fuse elements,
14 lead-in wires,
15 insulation shells,
16 encapsulants
Embodiment
Below, embodiments of the present invention are described with reference to accompanying drawing.It should be noted that, illustrate and to carry out with following order.
1. an execution mode
2. variation
1. an execution mode
Temperature fuse based on an embodiment of the invention is described.The B of A and Fig. 1 of Fig. 1 is the schematic cross-sectional of structure for illustration of the temperature fuse based on an embodiment of the invention and action.The A of Fig. 1 represents that fusible metal alloy is by the state before fusing, and the B of Fig. 1 represents that fusible metal alloy is by the state after fusing.
An example of temperature fuse, it is such as the temperature fuse of axial wire-guiding type electronics, possess: comprise fusible metal alloy 11 and coat the fuse element 13 of special resin 12 of fusible metal alloy 11,2 lead-in wires 14 be fused to the both ends of fusible metal alloy 11 respectively, extending respectively from the both ends of fuse element 13, the insulation shell 15 of storage fuse element 13 and 2 lead-in wires 14, and the encapsulant 16 of one end of sealed insulation shell 15 and the opening of the other end.
2 lead-in wires 14 extend from one end of the insulation shell 15 by encapsulant 16 sealed open and the other end respectively.As lead-in wire 14, the conductors such as tin annealed copper wire can be used.Insulation shell 15, such as, for tubular and one end of length direction and the other end have the shell of the insulating properties of opening.As encapsulant 16, epoxy resin etc. can be used.
For an example of temperature fuse, because temperature rises, when reaching the operating temperature of fuse element 13 work, as shown in the B of Fig. 1, fusible metal alloy melting, fuse element 13 are fused, and the conductings between 2 lead-in wires 14 are blocked.Thus, block the loop etc. comprising temperature fuse, protection package is containing the electronic equipment etc. of temperature fuse.The operating temperature of an example of temperature fuse, such as, is more than 180 DEG C and less than 200 DEG C.
(fuse element)
Fuse element 13 comprises membranaceous etc. the special resin 12 of fusible metal alloy 11 and coated fusible metal alloy 11.It should be noted that, fuse element 13 also can for omitting the structure of special resin 12.
(fusible metal alloy)
Fusible metal alloy 11 is by being processed into wire thus the wire rod etc. of the temperature fuse obtained to the raw material extrusion molding or pultrusion etc. of fusible metal alloy 11.Fusible metal alloy 11 comprises bismuth (Bi), copper (Cu) and tin (Sn).In fusible metal alloy 11, such as, copper and tin form the intermetallic compound comprising these elements.Its result, heat-resistant quality rises, and can meet the characteristic as temperature fuse.Fusible metal alloy 11 also comprises the inevitable impurity except bismuth, copper and tin.It should be noted that, be other the material except bismuth, copper, tin as inevitable impurity.As other material, such as, can list can not fully prevent from being during fabrication mixed into other element, melting time the oxide etc. that produces.
(composition of fusible metal alloy)
For fusible metal alloy 11, the content of bismuth is more than 5 quality % (% by weight, same below) and below 30 quality %, and the content of copper is more than 0.1 quality % and below 5 quality %, and remainder comprises tin and inevitable impurity.It should be noted that, the content of bismuth, the content of copper are the value specified in the quality percentage of the total quality relative to bismuth, copper and tin.
Comprise copper in fusible metal alloy 11, thus significantly can reduce the deviation of the operating temperature of temperature fuse.When the content of the copper of fusible metal alloy 11 is less than above-mentioned scope, there is the homogeneity (easy segregation) being difficult to keep composition, be difficult to the tendency of the reproducibility of operating temperature when obtaining volume production.When the content of the copper of fusible metal alloy 11 is more than above-mentioned scope, fusible metal alloy is carried out adding man-hour by extrusion molding etc., become fragile, the problem such as broken at a touch when extruding.The content of the copper of fusible metal alloy 11 is preferably more than 0.5 quality % and below 4 quality %.By the content of copper is set to more than 0.5 quality %, thus more easily keep the homogeneity (more not easily segregation) of composition.By the content of copper is set to below 4 quality %, thus become can extrusion molding etc., can improve the processability of fusible metal alloy further.Be more preferably more than 0.5 quality % and below 2 quality %.By the content of copper is set to below 2 quality %, thus become can easily extrusion molding etc., can improve the processability of fusible metal alloy further.
For the content of the bismuth of fusible metal alloy 11, from the view point of the operating temperature of the higher temperatures adjusted to as object of the present invention (such as, 180 DEG C ~ 200 DEG C), regulation is to above-mentioned scope.The content of the bismuth of fusible metal alloy 11 is preferably more than 20 quality % and below 30 quality %.By the content of bismuth is set to more than 20 quality %, thus operating temperature can be adjusted to not exceed 200 DEG C.The content of the bismuth of fusible metal alloy 11 is more preferably more than 20 quality % and below 25 quality %.By the content of bismuth is set to below 25 quality %, thus it is high to give mechanical strength, and fraction defective during production reduces further, and in addition, process when fusible metal alloy 11 being assembled to machine becomes easy.
(preparation method of fusible metal alloy)
Fusible metal alloy 11 by using the common melting method in the technical field of this technology, thus can be prepared.Such as, take the tin of the weight corresponding with the composition of the expectation of fusible metal alloy 11, bismuth and copper and put in the container adding and hanker and make its melting etc., thus fusible metal alloy 11 can be prepared.Now, partly alloy can be used.Even if these metals use arbitrary fusion technology in the past all can melting.When preparing fusible metal alloy 11, be heated to till these metals all become liquid.
(special resin)
As special resin 12, such as, the resin etc. rosin etc. being set to main component can be used.
Embodiment
Below, the present invention is explained by embodiment.It should be noted that, the present invention is not limited to the formation of following embodiment.
< embodiment 1>
Prepare the fusible metal alloy of following composition.Then, this fusible metal alloy is such as processed as wire by extrusion molding, makes wire rod.Then, the temperature fuse shown in A of the Fig. 1 using this wire rod is made.
(composition of fusible metal alloy)
Sn:69.85 quality %
Bi:30.00 quality %
Cu:0.15 quality %
It should be noted that, the constituting portion material of temperature fuse as described below in detail.
Lead-in wire: tin annealed copper wire
Special resin: rosin series solder flux
Insulation shell: aluminium oxide shell (axial wire-guiding type electronics)
Encapsulant: epoxy resin
< embodiment 2>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:79.70 quality %
Bi:20.00 quality %
Cu:0.30 quality %
< embodiment 3>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:84.60 quality %
Bi:15.00 quality %
Cu:0.40 quality %
< embodiment 4>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:94.50 quality %
Bi:5.00 quality %
Cu:0.50 quality %
< embodiment 5>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:89.50 quality %
Bi:10.00 quality %
Cu:0.50 quality %
< embodiment 6>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:80.00 quality %
Bi:19.50 quality %
Cu:0.50 quality %
< embodiment 7>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:74.50 quality %
Bi:25.00 quality %
Cu:0.50 quality %
< embodiment 8>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:75.00 quality %
Bi:23.0 quality %
Cu:2.00 quality %
< embodiment 9>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:74.00 quality %
Bi:22.00 quality %
Cu:4.00 quality %
< comparative example 1>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:80.00 quality %
Bi:20.00 quality %
< comparative example 2>
Prepare the fusible metal alloy of following composition, operate similarly to Example 1 in addition, make temperature fuse.
(composition of fusible metal alloy)
Sn:74.00 quality %
Bi:20.00 quality %
Cu:6.00 quality %
(mensuration of operating temperature, judgement)
For each embodiment and comparative example, measure the operating temperature (fusing-off temperature) of the temperature fuse of multiple (such as 100) sample, obtain the standard deviation (σ (DEG C)) of the mean value (AVE (DEG C)) of the operating temperature of temperature fuse, the maximum of the operating temperature of temperature fuse and the difference (scope=R (DEG C)) of minimum value, the operating temperature of temperature fuse.Mensuration and result of determination are shown in Table 1.
Judge to carry out based on following benchmark.
Zero: σ is less than 2.5 DEG C and R is within 10 DEG C and the product that do not work
×: σ more than 2.5 DEG C, R more than 15 DEG C or a large amount of generation do not work product or in assembling operation operation operational difficulty
Table 1
* can not carry out the extrusion molding of fusible metal alloy, therefore can not carry out the evaluation of operating temperature
In embodiment 1 ~ embodiment 9, the content of bismuth is used to be more than 5 quality % and below 30 quality %, the content of copper is more than 0.1 quality % and below 5 quality %, remainder comprise the fusible metal alloy of tin and inevitable impurity, and therefore result of determination is good.On the other hand, in comparative example 1, σ is more than 2.5 DEG C, and a large amount of generation does not work product.In comparative example 2, the extrusion molding of fusible metal alloy can not be carried out, therefore can not assemble, can not reach and evaluate.
2. variation
The present invention is not limited to above-mentioned an embodiment of the invention and embodiment, can carry out various distortion, application without departing from the spirit and scope of the invention.
Such as, only example after all such as numerical value, structure, shape, material, raw material, manufacturing process etc. cited in above-mentioned execution mode and embodiment, as required, also the numerical value different from them, structure, shape, material, raw material, manufacturing process etc. can be used.
In addition, an above-mentioned execution mode and the formation of embodiment, method, operation, shape, material and numerical value etc. only otherwise depart from purport of the present invention, then can combine mutually.
In an above-mentioned execution mode, the fusible metal type temperature fuse for axial wire-guiding type electronics is described, and the present invention also can be applied to the fusible metal type temperature fuse of other type of the fusible metal type temperature fuse of radial mode etc.In addition, such as, also silver-plated lead, zinc-plated steel wire etc. can be used as lead-in wire 14.
Claims (7)
1. a temperature fuse fusible metal alloy, it comprises bismuth, copper and remainder, described remainder comprises tin and inevitable impurity, and the content of described bismuth is more than 5 quality % and below 30 quality %, and the content of described copper is more than 0.1 quality % and below 5 quality %.
2. temperature fuse fusible metal alloy according to claim 1, wherein, the content of described copper is more than 0.5 quality % and below 4 quality %.
3. the temperature fuse fusible metal alloy according to any one of claim 1 ~ 2, wherein, the content of described bismuth is more than 20 quality % and below 30 quality %.
4. the temperature fuse fusible metal alloy according to any one of claims 1 to 3, wherein, the content of described copper is more than 0.5 quality % and below 2 quality %.
5. the temperature fuse fusible metal alloy according to any one of Claims 1 to 4, wherein, the content of described bismuth is more than 20 quality % and below 25 quality %.
6. a temperature fuse wire rod, it comprises the temperature fuse fusible metal alloy according to any one of Claims 1 to 5.
7. a temperature fuse, it possesses temperature fuse element, and described temperature fuse element has the temperature fuse wire rod of the temperature fuse fusible metal alloy comprised according to any one of Claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014141075A JP6101908B2 (en) | 2014-07-09 | 2014-07-09 | Fusible alloy for thermal fuse, wire for thermal fuse and thermal fuse |
| JP2014-141075 | 2014-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105261535A true CN105261535A (en) | 2016-01-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510383118.1A Pending CN105261535A (en) | 2014-07-09 | 2015-07-02 | Fusible alloy for temperature fuse, wires for temperature fuse, and temperature fuse |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6101908B2 (en) |
| CN (1) | CN105261535A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1177368A (en) * | 1997-09-02 | 1999-03-23 | Senju Metal Ind Co Ltd | Lead-free solder alloy |
| JPH11320177A (en) * | 1998-05-13 | 1999-11-24 | Murata Mfg Co Ltd | Solder composition material |
| JP2000073154A (en) * | 1998-08-27 | 2000-03-07 | Totoku Electric Co Ltd | Soldered wire |
| JP2000153388A (en) * | 1998-09-14 | 2000-06-06 | Murata Mfg Co Ltd | Soldered article |
| JP2001291459A (en) * | 2000-04-07 | 2001-10-19 | Uchihashi Estec Co Ltd | Alloy temperature fuse |
| CN1494101A (en) * | 2002-10-30 | 2004-05-05 | 内桥艾斯泰克股份有限公司 | Alloy type temp fuse and wire for temp fuse element |
| CN1503295A (en) * | 2002-11-26 | 2004-06-09 | 内桥艾斯泰克股份有限公司 | Alloy type thermal fuse and material for a thermal fuse element |
| JP4135268B2 (en) * | 1998-09-04 | 2008-08-20 | 株式会社豊田中央研究所 | Lead-free solder alloy |
-
2014
- 2014-07-09 JP JP2014141075A patent/JP6101908B2/en active Active
-
2015
- 2015-07-02 CN CN201510383118.1A patent/CN105261535A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1177368A (en) * | 1997-09-02 | 1999-03-23 | Senju Metal Ind Co Ltd | Lead-free solder alloy |
| JPH11320177A (en) * | 1998-05-13 | 1999-11-24 | Murata Mfg Co Ltd | Solder composition material |
| JP2000073154A (en) * | 1998-08-27 | 2000-03-07 | Totoku Electric Co Ltd | Soldered wire |
| JP4135268B2 (en) * | 1998-09-04 | 2008-08-20 | 株式会社豊田中央研究所 | Lead-free solder alloy |
| JP2000153388A (en) * | 1998-09-14 | 2000-06-06 | Murata Mfg Co Ltd | Soldered article |
| JP2001291459A (en) * | 2000-04-07 | 2001-10-19 | Uchihashi Estec Co Ltd | Alloy temperature fuse |
| CN1494101A (en) * | 2002-10-30 | 2004-05-05 | 内桥艾斯泰克股份有限公司 | Alloy type temp fuse and wire for temp fuse element |
| CN1503295A (en) * | 2002-11-26 | 2004-06-09 | 内桥艾斯泰克股份有限公司 | Alloy type thermal fuse and material for a thermal fuse element |
Non-Patent Citations (1)
| Title |
|---|
| 周亚奎编: "《金属材料》", 30 December 1958, 机械工业出版社 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6101908B2 (en) | 2017-03-29 |
| JP2016017210A (en) | 2016-02-01 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20161228 Address after: Osaka Japan Applicant after: Uchihashi Estack Co., Ltd. Address before: Tokyo, Japan, Japan Applicant before: K.K. Tamura Seisakusho |
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Application publication date: 20160120 |