[go: up one dir, main page]

JP6023410B2 - Fusible link - Google Patents

Fusible link Download PDF

Info

Publication number
JP6023410B2
JP6023410B2 JP2011173716A JP2011173716A JP6023410B2 JP 6023410 B2 JP6023410 B2 JP 6023410B2 JP 2011173716 A JP2011173716 A JP 2011173716A JP 2011173716 A JP2011173716 A JP 2011173716A JP 6023410 B2 JP6023410 B2 JP 6023410B2
Authority
JP
Japan
Prior art keywords
conductor
fusing part
fusing
melting point
fusible link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2011173716A
Other languages
Japanese (ja)
Other versions
JP2013037929A (en
Inventor
朝子 高橋
朝子 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yazaki Corp
Original Assignee
Yazaki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yazaki Corp filed Critical Yazaki Corp
Priority to JP2011173716A priority Critical patent/JP6023410B2/en
Priority to PCT/JP2012/005042 priority patent/WO2013021637A1/en
Priority to CN201280029587.8A priority patent/CN103608888B/en
Priority to BR112013033305A priority patent/BR112013033305A2/en
Priority to KR1020147001471A priority patent/KR101534277B1/en
Publication of JP2013037929A publication Critical patent/JP2013037929A/en
Application granted granted Critical
Publication of JP6023410B2 publication Critical patent/JP6023410B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H01H85/08—Fusible members characterised by the shape or form of the fusible member
    • H01H85/11—Fusible members characterised by the shape or form of the fusible member with applied local area of a metal which, on melting, forms a eutectic with the main material of the fusible member, i.e. M-effect devices
    • 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
    • H01H85/08—Fusible members characterised by the shape or form of the fusible member
    • H01H85/10—Fusible members characterised by the shape or form of the fusible member with constriction for localised fusing
    • 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
    • H01H85/165—Casings
    • H01H85/17—Casings characterised by the casing material

Landscapes

  • Fuses (AREA)

Description

本発明は、所定値以上の電流が流れることにより溶断する溶断部を有したヒュージブルリンクに関する。   The present invention relates to a fusible link having a fusing part that blows when a current of a predetermined value or more flows.

ヒュージブルリンクは例えば、自動車のバッテリーと負荷とを接続してバッテリーの電流を負荷に分配供給するために用いられる。図４は特許文献１に開示されたヒュージブルリンク１０１を示す。このヒュージブルリンク１０１は薄板帯状に形成された導体１０２を有しており、この薄板状の導体１０２の長さ方向の一端にバッテリーのバッテリー端子に接続される第１端子部１０３が設けられ、他端に車体の負荷からの接続電線に接続される第２端子部１０４が設けられている。又、薄板状の導体１０２の長さ方向の中間部には、溶断部１０５が形成されている。このような導体１０２は全体が図示しない絶縁被覆によって被覆されて使用される。   The fusible link is used, for example, to connect a battery of an automobile and a load to distribute and supply the battery current to the load. FIG. 4 shows a fusible link 101 disclosed in Patent Document 1. The fusible link 101 has a conductor 102 formed in a thin strip shape, and a first terminal portion 103 connected to the battery terminal of the battery is provided at one end of the thin plate conductor 102 in the length direction. A second terminal portion 104 connected to a connecting wire from a load on the vehicle body is provided at the other end. Further, a fusing part 105 is formed at an intermediate part in the longitudinal direction of the thin plate-like conductor 102. Such a conductor 102 is used by being entirely covered with an insulating coating (not shown).

溶断部１０５は細い帯状となって形成されている。すなわち溶断部１０５は薄板状の導体１０２の他の部分よりも細くなるように導体１０２に形成されており、その断面積は導体１０２の他の部分の断面積よりも小さくなっている。これにより溶断部１０５の電気抵抗が導体１０２の他の部分よりも大きくなっている。このようなヒュージブルリンク１０１では、所定の値以上の過電流が導体１０２に流れると、溶断部１０５が導体１０２の他の部分よりも多く発熱し、この発熱によって溶断部１０５が溶断する。これにより負荷からの接続電線に過電流が流れることを防止でき、過電流による負荷への悪影響や負荷の損傷を防止することが可能となる。   The fusing part 105 is formed in a thin band shape. That is, the fusing part 105 is formed in the conductor 102 so as to be thinner than the other part of the thin plate-like conductor 102, and its cross-sectional area is smaller than the cross-sectional area of the other part of the conductor 102. Thereby, the electrical resistance of the fusing part 105 is larger than the other part of the conductor 102. In such a fusible link 101, when an overcurrent of a predetermined value or more flows through the conductor 102, the fusing part 105 generates more heat than the other part of the conductor 102, and the fusing part 105 is blown by this heat generation. Thereby, it is possible to prevent an overcurrent from flowing from the load to the connection electric wire, and it is possible to prevent an adverse effect on the load and damage to the load due to the overcurrent.

ＤＥ １９５１２１１３ Ａ１DE 19512113 A1

しかしながら従来のヒュージブルリンク１０１では、溶断部１０５が導体１０２の他の部分よりも単に細くなるように形成されるものであり、その溶断温度は導体１０２の他の部分と同じ温度である。このためレアショート領域での溶断部１０５の溶断時間が長くなり、迅速で確実な溶断が難しく安全性が低い問題を有している。また、低電流が流れた場合に絶縁被覆が燃える危険性も有している。      However, in the conventional fusible link 101, the fusing part 105 is formed so as to be simply thinner than the other part of the conductor 102, and the fusing temperature is the same as the other part of the conductor 102. For this reason, the fusing time of the fusing part 105 in a rare short region becomes long, and there is a problem that quick and reliable fusing is difficult and safety is low. In addition, there is a risk that the insulation coating burns when a low current flows.

そこで本発明は、溶断部の溶断を短時間で確実に行うことができ、絶縁被覆が燃える危険性が小さなヒュージブルリンクを提供することを目的とする。   In view of the above, an object of the present invention is to provide a fusible link that can perform fusing of a fusing part reliably in a short time and has a low risk of burning an insulating coating.

請求項１記載の発明のヒュージブルリンクは、長尺状の導体と、前記導体は導電性金属からなる撚り線からなり、前記導体は長手方向の中間部に設けられ圧縮によって長手方向に伸びた状態で前記導体の素線部の断面積より小さい断面積になるように細くなっており所定の値の電流により溶断可能な溶断部と、この溶断部に沿って溶着された前記導体より低融点の低融点金属体と、少なくとも前記溶断部を前記低融点金属体と共に覆う耐火絶縁体とで形成され、前記耐火絶縁体が、前記溶断部を前記低融点金属体と共に覆うセラミック製の絶縁筒体と、この絶縁筒体と共に前記導体の素線部を覆う絶縁性を有した耐火マイカテープとで形成されていることを特徴とする。 Fusible link of the invention described in claim 1 includes an elongated conductor, the conductor is made of twisted wire made of a conductive metal, the conductor in the longitudinal direction by the compression provided in an intermediate portion in the longitudinal direction a fusing part that can be fused by a current of predetermined value are narrowed as in Shin VITA state becomes smaller cross-sectional area than the cross-sectional area of the wire portion of the conductor, the conductor is welded along the fusion portion A low melting point metal body having a lower melting point and a refractory insulator that covers at least the fusing part together with the low melting point metal body, and the refractory insulator is made of ceramic that covers the fusing part together with the low melting point metal body. It is formed with the insulation cylinder and the fireproof mica tape which has the insulation which covers the strand part of the said conductor with this insulation cylinder .

請求項２記載の発明は、請求項１記載のヒュージブルリンクであって、前記絶縁筒体は少なくとも前記導体の融点より高い融点であることを特徴とする。 According to a second aspect of the invention, a fusible link of claim 1, wherein said insulating cylinder is characterized by a melting point higher than the melting point of at least the conductor.

請求項３記載の発明は、請求項２記載のヒュージブルリンクであって、前記絶縁筒体は、前記低融点金属体が溶着された前記溶断部に非接触状態で、前記溶断部の両側の前記素線部の外周面に固定されていることを特徴とする。 According to a third aspect of the invention, a fusible link of claim 2 Symbol mounting, the insulating cylinder, said a non-contact state to the fusing part of the low melting metal member is welded, on both sides of the fusing part It is being fixed to the outer peripheral surface of the said strand part.

請求項１記載の発明によれば、圧縮によって長手方向に伸びた状態で細くなった溶断部が導電性金属の撚り線からなる導体の素線部の断面積よりも小さくなっていることにより溶断部の電気抵抗が大きくなっており、電流によって溶断部が効率良く温度上昇する。従って、溶断部は電流による温度上昇が大きい。また、溶断部に沿って低融点金属体が溶着されることにより低融点金属体が溶断部と合金化及び拡散しており、この合金化及び拡散によって溶断部の融点が導体の素線部の融点よりも下がっている。従って、溶断部は導体の素線部よりも溶断温度が低くなっており、素線部よりも低い温度で溶断可能となっている。さらに、耐火絶縁体が低融点金属体と共に溶断部を覆っていることにより、溶断部で発熱した熱が外部に逃げることがなく溶断部が効率良く温度上昇する。これらにより、ヒュージブルリンクに所定値以上の電流が流れると溶断部が短時間で確実に溶断するため、レアショート領域、デッドショート領域のいずれであっても負荷側の接続電線を保護することができ、しかも絶縁被覆が燃えることを防止できる。 According to the first aspect of the invention, it is smaller than the cross-sectional area of the strand of the conductor to the fusing part that tapers longitudinally Shin VITA state by the compression consists of strands of a conductive metal As a result, the electrical resistance of the fusing part is increased, and the temperature of the fusing part is efficiently increased by the current. Therefore, the temperature rise due to the current is large in the fused part. In addition, the low melting point metal body is welded and diffused with the melted portion by welding the low melting point metal body along the melted portion, and the melting point of the melted portion is reduced by the alloying and diffusion of the conductor wire portion. It is below the melting point. Accordingly, the fusing portion has a fusing temperature lower than that of the conductor wire portion, and can be cut at a temperature lower than that of the wire portion. Further, since the refractory insulator covers the fusing portion together with the low melting point metal body, the heat generated in the fusing portion does not escape to the outside, and the fusing portion efficiently rises in temperature. As a result, when a current of a predetermined value or more flows through the fusible link, the fusing part is surely blown out in a short time, so that the load side connecting wire can be protected in either the rare short region or the dead short region. In addition, the insulating coating can be prevented from burning.

特に、請求項１記載の発明によれば、耐火絶縁体が溶断部を低融点金属体と共に覆うセラミック製の絶縁筒体と、この絶縁筒体と共に導体の素線部を覆う絶縁性を有した耐火マイカテープとで形成されることにより、耐火マイカテープによって溶断部を確実に覆うようにうセラミック製の絶縁筒体が固定される。このように溶断部を覆うように固定されたセラミック製の絶縁筒体は溶断部から発熱した熱を外部に逃げることを防止するため、溶断部が短時間で確実に溶断して負荷側の接続電線を保護することができる。 In particular, according to the first aspect of the present invention, the refractory insulator has a ceramic insulating cylinder that covers the fusing part together with the low-melting point metal body , and has an insulating property that covers the wire portion of the conductor together with the insulating cylinder . by being formed by a refractory mica tape, insulating cylinder made of ceramic earthenware pots as reliably cover the fusion portion is fixed by the refractory mica tape. In this way, the ceramic insulating cylinder fixed so as to cover the fusing part prevents the heat generated from the fusing part from escaping to the outside. The electric wire can be protected.

請求項２記載の発明によれば、絶縁筒体が導体の融点より高い融点であるため、溶断部の熱によって絶縁筒体が溶融することがなく、溶断部の覆い状態を保持することができる。これにより溶断部の熱が外部に逃げることを確実に防止することができる。 According to the invention described in claim 2 , since the insulating cylinder has a melting point higher than the melting point of the conductor, the insulating cylinder is not melted by the heat of the fusing part, and the covering state of the fusing part can be maintained. . Thereby, it can prevent reliably that the heat | fever of a fusing part escapes outside.

請求項３記載の発明によれば、絶縁筒体が溶断部に非接触状態で溶断部の両側の前記素線部の外周面に固定されているため、絶縁筒体が溶断部を覆った状態となって溶断部の熱を絶縁筒体の内部に封じ込めることができるのに加えて絶縁筒体が溶断部と接触して溶断部の熱を奪うことがない。従って、溶断部が効率良く温度上昇するため短時間で溶断部が溶断する。 According to invention of Claim 3 , since the insulation cylinder is being fixed to the outer peripheral surface of the said strand part of the both sides of a fusing part in a non-contact state to a fusing part, the state which the insulation cylinder covered the fusing part Thus, in addition to being able to contain the heat of the fusing part inside the insulating cylinder, the insulating cylinder does not come into contact with the fusing part and take the heat of the fusing part. Therefore, since the temperature of the fusing part is increased efficiently, the fusing part is blown out in a short time.

（ａ）〜（ｄ）は本発明の実施形態のヒュージブルリンクを製造工程とともに示す斜視図である。(A)-(d) is a perspective view which shows the fusible link of embodiment of this invention with a manufacturing process. （ａ）及び（ｂ）はヒュージブルリンクを示す平面図及び側面図である。(A) And (b) is the top view and side view which show a fusible link. 溶断特性を示すグラフである。It is a graph which shows a fusing characteristic. 従来のヒュージブルリンクを示す斜視図である。It is a perspective view which shows the conventional fusible link.

以下、本発明を図示する実施形態により具体的に説明する。 Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

図１は、本発明の実施形態のヒュージブルリンク１の製造工程、図２は製造されたヒュージブルリンク１の形状を示す。   FIG. 1 shows a manufacturing process of a fusible link 1 according to an embodiment of the present invention, and FIG. 2 shows a shape of the manufactured fusible link 1.

ヒュージブルリンク１は、長尺状の導体１０（図１（ａ））と、導体１０の中間部に設けられた溶断部１１（図１（ｂ））と、溶断部１１に溶着された低融点金属体１３（図１（ｃ））と、溶断部１１を覆う耐火絶縁体１２（図１（ｃ）及び（ｄ））とを備えている。また、耐火絶縁体１２は絶縁筒体１７及び耐火絶縁テープ１８によって形成されている（図２）。   The fusible link 1 includes a long conductor 10 (FIG. 1A), a fusing part 11 (FIG. 1B) provided in the middle part of the conductor 10, and a low welded to the fusing part 11. A melting point metal body 13 (FIG. 1C) and a refractory insulator 12 (FIGS. 1C and 1D) covering the fusing part 11 are provided. The refractory insulator 12 is formed of an insulating cylinder 17 and a refractory insulating tape 18 (FIG. 2).

導体１０は導電性金属からなる細線の撚り線によって長尺な棒状に形成されているが、導電性金属の細帯によって長尺状に形成されていても良い。導電性金属としては、銅、銀、アルミニウム或いはこれらの合金等を用いることができる。    The conductor 10 is formed in a long rod shape by a fine strand wire made of a conductive metal, but may be formed in a long shape by a thin strip of conductive metal. As the conductive metal, copper, silver, aluminum, or an alloy thereof can be used.

溶断部１１は導体１０の長手方向に中間部に設けられる。溶断部１１は導体１０の中間部を圧延加工により導体１０の他の部分よりも細く形成することにより、導体１０の他の部分よりも断面積が小さくなっている。すなわち、溶断部１１は図１（ｂ）のＤ領域で示す導体１０の素線部１５の断面積より小さい断面積に形成されるものである。断面積が小さくなっていることにより溶断部１１の熱容量が素線部１５よりも小さくなる。また、溶断部１１の電気抵抗が素線部１５の電気抵抗よりも大きくなっており、素線部１５に比べて発熱量が多く、素線部１５よりも大きく温度上昇する。 The fusing part 11 is provided at an intermediate part in the longitudinal direction of the conductor 10. The fusing part 11 has a smaller cross-sectional area than the other part of the conductor 10 by forming the intermediate part of the conductor 10 thinner than the other part of the conductor 10 by rolling. That is , the fusing part 11 is formed to have a smaller cross-sectional area than the cross-sectional area of the wire part 15 of the conductor 10 indicated by the D region in FIG. Since the cross-sectional area is small, the heat capacity of the fusing part 11 is smaller than that of the wire part 15. Further, the electrical resistance of the fusing part 11 is larger than the electrical resistance of the strand part 15, and the amount of heat generated is larger than that of the strand part 15, and the temperature rises more than that of the strand part 15.

図１（ｃ）に示すように、低融点金属体１３は溶断部１１に沿って溶着される。低融点金属体１３は導体１０よりも低融点の金属が用いられる。この金属としては、錫、カドミウム、鉛、ビスマス、インジウム或いはこれらの合金等を用いることができる。低融点金属体１３が溶断部１１に溶着されることにより、低融点金属体１３が溶断部１１と合金化すると共に溶断部１１に拡散する。この低融点金属体１３の合金化及び拡散によって溶断部１１の融点が導体１０の素線部１５の融点よりも下がるため、溶断部１１の溶断温度が素線部１５よりも低くなる。 As shown in FIG. 1C, the low melting point metal body 13 is welded along the fusing part 11. A metal having a lower melting point than that of the conductor 10 is used for the low melting point metal body 13. As this metal, tin, cadmium, lead, bismuth, indium, or an alloy thereof can be used. By welding the low melting point metal body 13 to the fusing part 11, the low melting point metal body 13 is alloyed with the fusing part 11 and diffuses into the fusing part 11. Since the melting point of the fusing part 11 is lower than the melting point of the strand part 15 of the conductor 10 due to the alloying and diffusion of the low melting point metal body 13, the fusing temperature of the fusing part 11 is lower than that of the strand part 15.

耐火絶縁体１２は溶断部１１を低融点金属体１３と共に覆うものであり、溶断部１１を覆うことにより溶断部１１で発熱した熱が外部に逃げることを防止する。これにより溶断部１１が効率良く温度上昇する。   The refractory insulator 12 covers the fusing part 11 together with the low-melting point metal body 13, and by covering the fusing part 11, the heat generated in the fusing part 11 is prevented from escaping to the outside. Thereby, the temperature of the fusing part 11 rises efficiently.

耐火絶縁体１２はセラミック製の絶縁筒体１７（図１（ｃ））と、絶縁筒体１７を導体１０の素線部１５に固定する耐火絶縁テープ１８（図２）とによって形成されている。   The refractory insulator 12 is formed by a ceramic insulating cylinder 17 (FIG. 1C) and a refractory insulating tape 18 (FIG. 2) that fixes the insulating cylinder 17 to the wire portion 15 of the conductor 10. .

絶縁筒体１７は溶断部１１よりも長い筒状に形成されている。また、絶縁筒体１７は導体１０の外径と同等か、幾分大きな内径を有した筒体となっており、導体１０が挿通可能となっている。導体１０に対し、絶縁筒体１７は低融点金属体１３が溶着されている溶断部１１を覆うように配置され、溶断部１１からの熱を絶縁筒体１７の内部に封じ込めて外部に逃げることを防止する。 The insulating cylinder 17 is formed in a cylindrical shape longer than the fusing part 11. The insulating cylinder 17 is a cylinder having an inner diameter somewhat equal to or somewhat larger than the outer diameter of the conductor 10, and the conductor 10 can be inserted therethrough. With respect to the conductor 10, the insulating cylinder 17 is disposed so as to cover the fusing part 11 where the low melting point metal body 13 is welded, and the heat from the fusing part 11 is enclosed in the insulating cylinder 17 and escapes to the outside. To prevent.

溶断部１１を覆うように絶縁筒体１７を設ける場合、溶断部１１の両側の素線部１５の外周面に絶縁筒体１７の両端部を固定する。この固定は、耐火絶縁テープ１８を絶縁筒体１７及び素線部１５に巻き付けることにより行われる。この固定において、溶断部１１が導体１０の素線部１５よりも断面積が小さくなっているため、絶縁筒体１７は溶断部１１と非接触状態となって素線部１５の外周面に固定される。このように絶縁筒体１７が溶断部１１と非接触となっていることにより、絶縁筒体１７が溶断部１１の熱を奪うことがない。従って溶断部１１が効率良く温度上昇することができる。 When the insulating cylinder 17 is provided so as to cover the fusing part 11, both ends of the insulating cylinder 17 are fixed to the outer peripheral surfaces of the wire parts 15 on both sides of the fusing part 11. This fixing is performed by winding the fireproof insulating tape 18 around the insulating cylinder 17 and the wire portion 15. In this fixing, since the cross-sectional area of the fusing portion 11 is smaller than that of the strand portion 15 of the conductor 10, the insulating cylinder 17 is in a non-contact state with the fusing portion 11 and fixed to the outer peripheral surface of the strand portion 15. Is done. Thus, since the insulating cylinder 17 is not in contact with the fusing part 11, the insulating cylinder 17 does not take the heat of the fusing part 11. Therefore, the temperature of the fusing part 11 can be increased efficiently.

絶縁筒体１７は導体１０の融点よりも高い融点を有したセラミックによって形成されており、溶断部１１の熱によって絶縁筒体１７が導体１０に先だって溶融することがない。これにより絶縁筒体１７が溶断部１１の覆い状態を確実に維持することができる。 The insulating cylinder 17 is formed of a ceramic having a melting point higher than that of the conductor 10, and the insulating cylinder 17 is not melted prior to the conductor 10 by the heat of the fusing part 11. Thereby, the insulating cylinder 17 can maintain the covering state of the fusing part 11 reliably.

耐火絶縁テープ１８は絶縁性を有した耐火マイカテープ等が用いられる。耐火絶縁テープ１８は絶縁筒体１７の外周面及び導体１０の素線部１５の外周面に巻き付けられることにより、溶断部１１を覆うように絶縁筒体１７を導体１０の素線部１５に固定する。この耐火絶縁テープ１８はヒュージブルリンク１を覆う絶縁被覆として機能する。  As the refractory insulating tape 18, a refractory mica tape having an insulating property is used. The refractory insulating tape 18 is wound around the outer peripheral surface of the insulating cylinder 17 and the outer peripheral surface of the strand portion 15 of the conductor 10, thereby fixing the insulating cylinder 17 to the strand portion 15 of the conductor 10 so as to cover the fusing portion 11. To do. This refractory insulating tape 18 functions as an insulating coating covering the fusible link 1.

次に、この実施形態のヒュージブルリンク１の製造手順を説明する。図１（ａ）の状態の導体１０に対し、導体１０の長さ方向の中間部を圧延加工して素線部１５よりも小さな断面積の溶断部１１を形成する（図１（ｂ））。この溶断部１１に対して低融点金属体１３を溶着する（図１（ｃ））。そして、絶縁筒体１７が溶断部１１を覆う位置となるように導体１０を絶縁筒体１７に挿通する（図１（ｄ））。この場合、図示しないクリップ等によって絶縁筒体１７を導体１０に仮止めしても良く、これにより溶断部１１を覆った位置となるように絶縁筒体１７を導体１０に仮止めすることができる。  Next, the manufacturing procedure of the fusible link 1 of this embodiment will be described. For the conductor 10 in the state of FIG. 1A, the intermediate portion in the length direction of the conductor 10 is rolled to form a melted portion 11 having a smaller cross-sectional area than the strand portion 15 (FIG. 1B). . A low melting point metal body 13 is welded to the fusing part 11 (FIG. 1C). And the conductor 10 is penetrated to the insulation cylinder 17 so that the insulation cylinder 17 may be in the position which covers the fusing part 11 (FIG.1 (d)). In this case, the insulating cylinder 17 may be temporarily fixed to the conductor 10 with a clip or the like (not shown), whereby the insulating cylinder 17 can be temporarily fixed to the conductor 10 so as to cover the fusing part 11. .

これに加えて、導体１０の両端部に端子金具２０を取り付ける。それぞれの端子金具２０は加締め部２１及び端子部２２を有しており、加締め部２１を導体１０に加締めることにより導体１０への取り付けが行われる。それぞれの端子部２２に対してはバッテリー端子及び負荷からの接続電線との接続が行われる。  In addition, terminal fittings 20 are attached to both ends of the conductor 10. Each terminal fitting 20 has a crimped portion 21 and a terminal portion 22, and is attached to the conductor 10 by crimping the crimped portion 21 to the conductor 10. Each terminal portion 22 is connected to a battery terminal and a connecting wire from a load.

その後、図２に示すように、耐火絶縁テープ１８を絶縁筒体１７の外周面及び素線部１５の外周面に巻き付ける。これにより溶断部１１を覆った位置に絶縁筒体１７を固定する。    Thereafter, as shown in FIG. 2, the refractory insulating tape 18 is wound around the outer peripheral surface of the insulating cylindrical body 17 and the outer peripheral surface of the strand portion 15. Thereby, the insulating cylinder 17 is fixed at a position covering the fusing part 11.

図３は溶断特性を示し、実線が溶断部１１及び低融点金属体１３の溶着がなされていない導体を、破線が溶断部１１及び低融点金属体１３の溶着がなされたこの実施形態を示す。この実施形態では、導体１０に素線部１５よりも断面積が小さい溶断部１１を形成しているため、溶断部１１が効率良く温度上昇する。また、絶縁筒体１７が溶断部１１に非接触状態で覆っており、溶断部１１の熱を奪うことないと共に絶縁筒体１７の外部に逃げることを防止している。これにより溶断特性が図３のａ→ｂで示すように変化する。また、溶断部１１には低融点金属体１３が溶着して合金化及び拡散しているため、溶断部１１の融点が素線部１５の融点よりも下がっている。これにより溶断特性が図３のｃ→ｄで示すように変化する。    FIG. 3 shows the fusing characteristics, in which the solid line indicates a conductor in which the fusing part 11 and the low melting point metal body 13 are not welded, and the broken line indicates this embodiment in which the fusing part 11 and the low melting point metal body 13 are welded. In this embodiment, since the fusing part 11 having a smaller cross-sectional area than the wire part 15 is formed in the conductor 10, the fusing part 11 efficiently rises in temperature. Further, the insulating cylinder 17 covers the fusing part 11 in a non-contact state, so that the fusing part 11 is not deprived of heat and escapes to the outside of the insulating cylinder 17. As a result, the fusing characteristics change as indicated by a → b in FIG. Further, since the low melting point metal body 13 is welded and alloyed and diffused in the fusing part 11, the melting point of the fusing part 11 is lower than the melting point of the wire part 15. As a result, the fusing characteristics change as indicated by c → d in FIG.

以上の実施形態によれば、溶断部１１が導体１０の素線部１５の断面積よりも小さくなって電気抵抗が大きくなっており、溶断部１１が効率良く温度上昇する。また、溶断部１１に低融点金属体１３が溶着されることによる低融点金属体１３の合金化及び拡散によって溶断部１１の融点が導体１０の素線部１５の融点よりも下がっており、溶断部１１は導体１０の素線部１５よりも溶断温度が低くなっている。さらに耐火絶縁体１２が低融点金属体１３と共に溶断部１１を覆っているため、溶断部１１で発熱した熱が外部に逃げることがなく溶断部１１が効率良く温度上昇する。従ってヒュージブルリンク１に所定値以上の電流が流れると、溶断部１１が短時間で確実に溶断するため、レアショート領域、デッドショート領域のいずれであっても負荷側の接続電線を保護することができる。また、耐火絶縁テープ１が燃えることを防止できる。    According to the above embodiment, the fusing part 11 becomes smaller than the cross-sectional area of the strand part 15 of the conductor 10, the electric resistance is increased, and the fusing part 11 efficiently rises in temperature. Further, the melting point of the fusing part 11 is lower than the melting point of the wire part 15 of the conductor 10 due to the alloying and diffusion of the low melting point metal body 13 due to the welding of the low melting point metal body 13 to the fusing part 11. The part 11 has a fusing temperature lower than that of the wire part 15 of the conductor 10. Furthermore, since the refractory insulator 12 covers the fusing part 11 together with the low melting point metal body 13, the heat generated in the fusing part 11 does not escape to the outside, and the fusing part 11 efficiently rises in temperature. Therefore, when a current of a predetermined value or more flows through the fusible link 1, the fusing part 11 is surely blown in a short time, so that the load side connecting wire is protected in either the rare short region or the dead short region. Can do. Moreover, it can prevent that the fireproof insulating tape 1 burns.

また、耐火絶縁体１２においては、耐火絶縁テープ１８によって溶断部１１を確実に覆うようにセラミック製の絶縁筒体１７が固定されるため、溶断部１１から発熱した熱を外部に逃げることを防止でき、溶断部１１が短時間で確実に溶断して負荷側の接続電線を保護することができる。   Further, in the refractory insulator 12, the ceramic insulating cylinder 17 is fixed so as to securely cover the fusing portion 11 with the refractory insulating tape 18, so that heat generated from the fusing portion 11 is prevented from escaping to the outside. The fusing part 11 can be surely blown in a short time and the load side connecting wire can be protected.

また、絶縁筒体１７が導体１０の融点より高い融点であるため、溶断部１１の熱によって絶縁筒体１７が溶融することがなく、溶断部１１の覆い状態を保持することができ、これにより溶断部１１の熱が外部に逃げることを確実に防止することができる。   Further, since the insulating cylinder 17 has a melting point higher than the melting point of the conductor 10, the insulating cylinder 17 is not melted by the heat of the fusing part 11, and the covering state of the fusing part 11 can be maintained. It is possible to reliably prevent the heat of the fusing part 11 from escaping to the outside.

また、絶縁筒体１７が溶断部１１を非接触状態で覆った状態となっており、溶断部１１の熱を絶縁筒体１７の内部に封じ込めることができ、さらには絶縁筒体１７が溶断部１１の熱を奪うことがない。このため溶断部１１が効率良く温度上昇し、短時間で溶断部１１が溶断する。 Further, the insulating cylinder 17 covers the fusing part 11 in a non-contact state, the heat of the fusing part 11 can be enclosed in the insulating cylinder 17, and the insulating cylinder 17 is further fused. It won't take 11 heat. For this reason, fusing part 11 rises in temperature efficiently, and fusing part 11 blows out in a short time.

１ ヒュージブルリンク
１０ 導体
１１ 溶断部
１２ 耐火絶縁体
１３ 低融点金属体
１５ 素線部
１７ 絶縁筒体
１８ 耐火絶縁テープ DESCRIPTION OF SYMBOLS 1 Fusible link 10 Conductor 11 Fusing part 12 Refractory insulator 13 Low melting-point metal body 15 Strand part 17 Insulating cylinder 18 Refractory insulating tape

Claims (3)

長尺状の導体と、前記導体は導電性金属からなる撚り線からなり、前記導体は長手方向の中間部に設けられ圧縮によって長手方向に伸びた状態で前記導体の素線部の断面積より小さい断面積になるように細くなっており所定の値の電流により溶断可能な溶断部と、この溶断部に沿って溶着された前記導体より低融点の低融点金属体と、少なくとも前記溶断部を前記低融点金属体と共に覆う耐火絶縁体とで形成され、
前記耐火絶縁体が、前記溶断部を前記低融点金属体と共に覆うセラミック製の絶縁筒体と、この絶縁筒体と共に前記導体の素線部を覆う絶縁性を有した耐火マイカテープとで形成されていることを特徴とするヒュージブルリンク。 An elongated conductor, the conductor is made of twisted wire made of a conductive metal, said conductor longitudinally Shin VITA state by the compression provided in an intermediate portion in the longitudinal direction of the wire portion of the conductor A melted portion that is thinner to have a cross-sectional area smaller than the cross-sectional area and can be melted by a current of a predetermined value, a low-melting-point metal body having a melting point lower than that of the conductor welded along the melt-cut portion, and at least the above-mentioned Formed with a refractory insulator covering the melted portion together with the low melting point metal body ,
The refractory insulator is formed of a ceramic insulating cylinder that covers the melted portion together with the low-melting-point metal body, and an insulating refractory mica tape that covers the conductor wire portion together with the insulating cylinder. A fusible link characterized by 請求項１記載のヒュージブルリンクであって、
前記絶縁筒体は少なくとも前記導体の融点より高い融点であることを特徴とするヒュージブルリンク。 The fusible link according to claim 1,
The insulating cylinder is fusible link, wherein a higher melting point der Rukoto than the melting point of at least the conductor. 請求項２記載のヒュージブルリンクであって、
前記絶縁筒体は、前記低融点金属体が溶着された前記溶断部に非接触状態で、前記溶断部の両側の前記素線部の外周面に固定されていることを特徴とするヒュージブルリンク。 The fusible link according to claim 2,
Said insulating cylinder, said a non-contact state to the fusing part of the low melting metal member is welded, fusible link which is characterized that you have been fixed to the outer peripheral surface of said wire portions on both sides of the fusing part .
JP2011173716A 2011-08-09 2011-08-09 Fusible link Active JP6023410B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2011173716A JP6023410B2 (en) 2011-08-09 2011-08-09 Fusible link
PCT/JP2012/005042 WO2013021637A1 (en) 2011-08-09 2012-08-08 Fusible link
CN201280029587.8A CN103608888B (en) 2011-08-09 2012-08-08 Fuse
BR112013033305A BR112013033305A2 (en) 2011-08-09 2012-08-08 fuse connection
KR1020147001471A KR101534277B1 (en) 2011-08-09 2012-08-08 Fusible link

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011173716A JP6023410B2 (en) 2011-08-09 2011-08-09 Fusible link

Publications (2)

Publication Number Publication Date
JP2013037929A JP2013037929A (en) 2013-02-21
JP6023410B2 true JP6023410B2 (en) 2016-11-09

Family

ID=47668172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011173716A Active JP6023410B2 (en) 2011-08-09 2011-08-09 Fusible link

Country Status (5)

Country Link
JP (1) JP6023410B2 (en)
KR (1) KR101534277B1 (en)
CN (1) CN103608888B (en)
BR (1) BR112013033305A2 (en)
WO (1) WO2013021637A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6307762B2 (en) * 2014-09-26 2018-04-11 デクセリアルズ株式会社 Electrical wire
CN106206204A (en) * 2016-09-09 2016-12-07 东莞市贝特电子科技股份有限公司 An alloy fuse
JP7419834B2 (en) * 2020-01-24 2024-01-23 株式会社リコー Equipment equipped with an image forming device and a wire harness

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6215932Y2 (en) * 1980-11-12 1987-04-22
DE19704097A1 (en) * 1997-02-04 1998-08-06 Wickmann Werke Gmbh Electrical fuse element
JP2001283708A (en) * 2000-03-31 2001-10-12 Yazaki Corp fuse
JP4080207B2 (en) * 2002-01-18 2008-04-23 矢崎総業株式会社 Fusible link
JP2005158352A (en) * 2003-11-21 2005-06-16 Jun Mizuno Electric wire with fuse
JP5264376B2 (en) * 2008-09-11 2013-08-14 矢崎総業株式会社 Fuse and manufacturing method thereof

Also Published As

Publication number Publication date
KR20140036004A (en) 2014-03-24
BR112013033305A2 (en) 2017-03-07
KR101534277B1 (en) 2015-07-06
JP2013037929A (en) 2013-02-21
WO2013021637A1 (en) 2013-02-14
CN103608888A (en) 2014-02-26
CN103608888B (en) 2015-12-23

Similar Documents

Publication Publication Date Title
TWI672721B (en) wire
JP5656102B2 (en) Fuse element and sealed electric wire fuse using this fuse element
JP6023410B2 (en) Fusible link
JP5346705B2 (en) Current fuse
JP7500735B2 (en) Current-Limiting Fuse
JP6034710B2 (en) Electric wire fuse and method of manufacturing electric wire fuse
JP5646258B2 (en) Terminal connection structure of wire end and method for forming the same
JP2010044995A (en) Electric wire, and connection structure of electric wire with terminal metal fitting
KR200458888Y1 (en) Connection structure of a carbon heating wire and an electric code
JP6107020B2 (en) Electric wire with overcurrent cutoff function
JP5764006B2 (en) fuse
TW202333178A (en) Electrical fuse
JP2009032567A (en) fuse
JP5422335B2 (en) fuse
CN210182090U (en) Insulated wire
JP6007010B2 (en) Electric wire fuse and manufacturing method thereof
JP5740242B2 (en) Multi-fusible link
JP5825918B2 (en) fuse
JP6947139B2 (en) Overcurrent cutoff unit
JP6055196B2 (en) Electric wire fuse and method of manufacturing electric wire fuse
JP5955597B2 (en) Electric wire fuse and method of manufacturing electric wire fuse
JP4230313B2 (en) Cylindrical case type alloy type thermal fuse
JP6007286B2 (en) Manufacturing method of fuse
JPH1154006A (en) Thermal fuse cable
JP2009081119A (en) Fuse

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140718

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150407

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150514

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20151006

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20151109

A911 Transfer to examiner for re-examination before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20151207

A912 Re-examination (zenchi) completed and case transferred to appeal board

Free format text: JAPANESE INTERMEDIATE CODE: A912

Effective date: 20151225

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20160802

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20161007

R150 Certificate of patent or registration of utility model

Ref document number: 6023410

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250