JP2015026498A - Fuse and fusion characteristic adjustment method of fuse - Google Patents

Fuse and fusion characteristic adjustment method of fuse Download PDF

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JP2015026498A
JP2015026498A JP2013154903A JP2013154903A JP2015026498A JP 2015026498 A JP2015026498 A JP 2015026498A JP 2013154903 A JP2013154903 A JP 2013154903A JP 2013154903 A JP2013154903 A JP 2013154903A JP 2015026498 A JP2015026498 A JP 2015026498A
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connection plate
terminal connection
fuse
terminal
pair
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JP6212317B2 (en
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小野田　伸也
Shinya Onoda
伸也 小野田
青木　達也
Tatsuya Aoki
達也 青木
尚也 秋山
Naoya Akiyama
尚也 秋山
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Yazaki Corp
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Yazaki Corp
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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
    • H01H85/143—Electrical contacts; Fastening fusible members to such contacts
    • 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
    • H01H85/0039—Means for influencing the rupture process of the fusible element
    • H01H85/0047—Heating means
    • H01H85/0056—Heat conducting or heat absorbing means associated with the fusible member, e.g. for providing time delay
    • 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

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Abstract

PROBLEM TO BE SOLVED: To align fusion characteristics uniform regardless of the type of a terminal connected to a terminal connection plate part.SOLUTION: A fuse 1 comprises a pair of terminal connection plate parts 2 and 3 in both ends and between the pair of terminal connection plate parts 2 and 3, a fusible part 4 is formed which conductively connects both the terminal connection plate parts and is fused when an overcurrent flows. A fusion characteristic adjustment method of the fuse 1 includes: opening slits 10 in a fixed size on at least one terminal connection plate part 3 between the pair of terminal connection plate parts; increasing the number of slits 10 for decreasing a heat radiation amount of the terminal connection plate part when a heat radiation amount of a terminal connected to the terminal connection plate part is large; and decreasing the number of slits 10 for increasing the heat radiation amount of the terminal connection plate part when the heat radiation amount of a terminal connected to the terminal connection plate part is small.

Description

本発明は、過電流から電線や機器等を保護するためのヒューズに関するものである。   The present invention relates to a fuse for protecting electric wires, equipment, and the like from overcurrent.

自動車等の電気回路には、過電流から電線や機器等を保護するためのヒューズが用いられている。
図５は特許文献１に記載の従来のヒューズの一例を示す。図５に示すように、このヒューズ５０は、両端に一対の端子接続板部５２、５３を有し、一対の端子接続板部５２、５３の間に、両端子接続板部５２、５３を導通接続し且つ過電流が流れた時に溶断する可溶部５４を有し、可溶部５４の一部に、溶着された低融点金属チップ５６を有している。 In an electric circuit of an automobile or the like, a fuse is used for protecting an electric wire or equipment from an overcurrent.
FIG. 5 shows an example of a conventional fuse described in Patent Document 1. As shown in FIG. 5, the fuse 50 has a pair of terminal connection plate portions 52 and 53 at both ends, and the terminal connection plate portions 52 and 53 are electrically connected between the pair of terminal connection plate portions 52 and 53. It has a fusible part 54 that is connected and melts when an overcurrent flows, and has a low melting point metal chip 56 that is welded to a part of the fusible part 54.

特開平５−１６６４５３号公報JP-A-5-166453

ところで、ヒューズ５１の端子接続板部５２、５３には多種の端子が接続される可能性があるが、それら端子の大きさや厚さ、材質などによって、ヒューズの溶断特性が微妙に変わることが判明した。   By the way, although various terminals may be connected to the terminal connection plate portions 52 and 53 of the fuse 51, it has been found that the fusing characteristics of the fuse slightly change depending on the size, thickness, and material of the terminals. did.

例えば、図６（ａ）〜図６（ｃ）の３種の端子２０Ａ、２０Ｂ、２０Ｃを端子接続板部５２、５３に接続した場合、図７に示すように、電流値に対する溶断時間の変化曲線（溶断特性）が、端子の種類によって変動することが分かった。   For example, when the three types of terminals 20A, 20B, and 20C shown in FIGS. 6A to 6C are connected to the terminal connection plate portions 52 and 53, as shown in FIG. It was found that the curve (melting characteristics) varies depending on the type of terminal.

そこで、本発明の目的は、上記課題を解消することに係り、端子接続板部に接続される端子の種類によらず、溶断特性を均一に揃えることができるようにした、ヒューズ及びヒューズの溶断特性調整方法を提供することにある。   Accordingly, an object of the present invention is to solve the above-described problems, and to fuse the fuse and fuse fuse so that the fusing characteristics can be made uniform regardless of the type of terminal connected to the terminal connection plate portion. It is to provide a characteristic adjustment method.

本発明の上記目的は、下記の構成により達成される。
（１） 両端に一対の端子接続板部を有し、該一対の端子接続板部の間に該両端子接続板部を導通接続し且つ過電流が流れた時に溶断する可溶部が形成されたヒューズであって、
前記一対の端子接続板部のうちの少なくとも一方の前記端子接続板部に、該端子接続板部の放熱量を調整し前記可溶部の溶断特性を調整するために個数及び大きさの少なくとも一方が増減される切欠部が設けられていることを特徴とするヒューズ。 The above object of the present invention can be achieved by the following constitution.
(1) A pair of terminal connection plate portions is provided at both ends, and a fusible portion is formed between the pair of terminal connection plate portions that is electrically connected to both the terminal connection plate portions and melts when an overcurrent flows. Fuse,
At least one of the number and the size of the pair of terminal connection plate portions to adjust the heat dissipation amount of the terminal connection plate portion and the fusing characteristics of the soluble portion on the terminal connection plate portion of at least one of the pair of terminal connection plate portions. A fuse having a notch portion for increasing / decreasing the height.

（２） 前記切欠部が、前記端子接続板部の外周縁の内側に穿設された一定サイズのスリットであり、該スリットの個数の増減によって、前記端子接続板部の放熱量が調整されることを特徴とする上記（１）に記載のヒューズ。   (2) The notch is a slit of a certain size drilled inside the outer peripheral edge of the terminal connection plate portion, and the heat dissipation amount of the terminal connection plate portion is adjusted by increasing or decreasing the number of the slits. The fuse according to (1) above, wherein

（３） 両端に一対の端子接続板部を有し、該一対の端子接続板部の間に該両端子接続板部を導通接続し且つ過電流が流れた時に溶断する可溶部が形成されたヒューズの溶断特性調整方法であって、
前記一対の端子接続板部のうちの少なくとも一方の前記端子接続板部に一定サイズのスリットを穿設し、
前記端子接続板部に接続される端子の放熱量が大きい場合は、前記端子接続板部の放熱量を減らすために前記スリットの個数を増やし、前記端子接続板部に接続される端子の放熱量が小さい場合は、前記端子接続板部の放熱量を増やすために前記スリットの個数を減らすことを特徴とするヒューズの溶断特性調整方法。 (3) A pair of terminal connection plate portions is provided at both ends, and a soluble portion is formed between the pair of terminal connection plate portions, the both terminal connection plate portions being conductively connected and fused when an overcurrent flows. A method for adjusting the fusing characteristics of a fuse,
Drilling a slit of a certain size in at least one of the pair of terminal connection plate portions,
When the amount of heat released from the terminal connected to the terminal connecting plate is large, the number of slits is increased to reduce the amount of heat released from the terminal connecting plate, and the amount of heat released from the terminal connected to the terminal connecting plate Is small, the number of slits is reduced in order to increase the heat radiation amount of the terminal connecting plate portion, and the fusing characteristic adjustment method for fuses,

上記（１）の構成のヒューズによれば、切欠部の個数及び大きさの少なくとも一方を増減することにより、端子接続板部の放熱量を調整することができ、それにより、可溶部の溶断特性を調整することができる。従って、端子接続板部に接続する端子の種類によらず、ヒューズの溶断特性の均一化を図ることが可能になる。   According to the fuse having the above configuration (1), the amount of heat dissipated in the terminal connecting plate can be adjusted by increasing / decreasing at least one of the number and size of the notches, thereby fusing the fusible portion. Characteristics can be adjusted. Therefore, it is possible to make the fusing characteristics of the fuse uniform regardless of the type of terminal connected to the terminal connection plate portion.

上記（２）の構成のヒューズによれば、端子接続板部のプレス成形時にプレス金型の駒を取り替えてスリットの個数を増減するだけで、簡単に溶断特性を調整することができる。   According to the fuse having the configuration (2), the fusing characteristics can be easily adjusted by simply changing the number of the slits and increasing / decreasing the number of slits at the time of press molding of the terminal connection plate portion.

上記（３）の構成のヒューズの溶断特性調整方法によれば、スリットの個数を増減するだけで、端子接続板部に接続する端子の種類によらず、ヒューズの溶断特性の均一化を図ることができる。   According to the method for adjusting the fusing characteristics of the fuse having the above configuration (3), the fusing characteristics of the fuse can be made uniform regardless of the type of the terminal connected to the terminal connecting plate by simply increasing or decreasing the number of slits. Can do.

本発明によれば、切欠部の個数や大きさを増減するだけで、端子接続板部に接続する端子の種類によらず、ヒューズの溶断特性の均一化を図ることができる。   According to the present invention, the fusing characteristics of the fuse can be made uniform regardless of the type of the terminal connected to the terminal connecting plate, by simply increasing or decreasing the number and size of the notches.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態（以下、「実施形態」という。）を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。   The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

図１は本発明の実施形態のヒューズの主要部の構成を示す平面図である。FIG. 1 is a plan view showing a configuration of a main part of a fuse according to an embodiment of the present invention. 図２は同実施形態のヒューズにおいてスリットの個数を変えた場合に溶断特性がどのように変わるかを調べた結果を示す溶断特性図である。FIG. 2 is a fusing characteristic diagram showing the results of examining how the fusing characteristics change when the number of slits is changed in the fuse of the same embodiment. 図３は種類の違う端子ごとに、スリットの個数を違えたヒューズを組み合わせた組み合わせパターンを示す図である。FIG. 3 is a diagram showing a combination pattern in which fuses with different numbers of slits are combined for different types of terminals. 図４は図３のパターン毎の溶断特性を調べた結果を示す特性図である。FIG. 4 is a characteristic diagram showing the results of examining the fusing characteristics for each pattern of FIG. 図５は従来のヒューズの一例を示す斜視図である。FIG. 5 is a perspective view showing an example of a conventional fuse. 図６（ａ）〜図６（ｃ）は、ヒューズの端子接続板部に接続する端子の種類の例を示す図である。FIGS. 6A to 6C are diagrams illustrating examples of types of terminals connected to the terminal connection plate portion of the fuse. 図７はヒューズの端子接続板部に種類の違う端子を接続した場合に溶断特性が変動することを示す溶断特性図である。FIG. 7 is a fusing characteristic diagram showing that fusing characteristics fluctuate when different types of terminals are connected to the terminal connection plate portion of the fuse.

以下、本発明の実施形態を図面を参照して説明する。
図１は実施形態のヒューズの主要部の構成を示す平面図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing the configuration of the main part of the fuse of the embodiment.

このヒューズ１は、両端に一対の端子接続板部２、３を有し、これら一対の端子接続板部２、３の間に、両端子接続板部２、３を導通接続し且つ過電流が流れた時に溶断する細帯状の可溶部４を有している。可溶部４は、一対の端子接続板部２、３と同一の可溶金属導体で、一対の端子接続板部２、３と一体にプレス成形された細帯板部４ａと、細帯板部４ａに溶着された低融点金属チップ６とから構成されている。   The fuse 1 has a pair of terminal connection plate portions 2 and 3 at both ends, and the terminal connection plate portions 2 and 3 are electrically connected between the pair of terminal connection plate portions 2 and 3 and an overcurrent is generated. It has a strip-like soluble portion 4 that melts when it flows. The fusible portion 4 is the same fusible metal conductor as the pair of terminal connecting plate portions 2 and 3, and the narrow strip plate portion 4 a press-molded integrally with the pair of terminal connecting plate portions 2 and 3, and the narrow strip plate It is composed of a low melting point metal tip 6 welded to the portion 4a.

細帯板部４ａの長手方向の中間部には、過電流による温度上昇で溶融切断する溶断部４ｂが設けられている。溶断部４ｂは、断面積を他の部分より局部的に小さくすることで、大電流が流れた際に瞬断するように設定された部分である。低融点金属チップ６は、細帯板部４ａを構成する可溶金属導体より融点が低く過電流により溶融し溶断部４ｂに拡散して合金相を形成するものであり、溶断部４ｂに近接する位置に、加締片５で加締められた上で溶着されている。このように溶着されることにより、細帯板部４ａと低融点金属チップ６との間に広い接触面が確保され、この広い接触面を介して電流及び熱が低融点金属チップ６に有効に伝導されるようになる。   A fusing part 4b that melts and cuts due to an increase in temperature due to overcurrent is provided at an intermediate part in the longitudinal direction of the narrow strip part 4a. The fusing part 4b is a part that is set so as to be momentarily cut when a large current flows by making the cross-sectional area smaller than other parts. The low melting point metal chip 6 has a melting point lower than that of the soluble metal conductor constituting the thin strip plate portion 4a, melts by overcurrent and diffuses into the fusing portion 4b to form an alloy phase, and is close to the fusing portion 4b. It is welded after being crimped by the crimping piece 5 at the position. By welding in this way, a wide contact surface is ensured between the narrow strip portion 4a and the low melting point metal chip 6, and current and heat are effectively applied to the low melting point metal chip 6 through the wide contact surface. Be conducted.

ここで、端子接続板部２、３及び細帯板部４を構成する可溶金属導体（母材）は、導電線と同じ銅合金よりなる。一方、低融点金属チップ６は、銅（Ｃｕ）よりも融点の低いスズ（Ｓｎ）よりなり、通電による温度上昇で溶融し溶断部４ｂ内に拡散して合金相を形成するようになっている。   Here, the fusible metal conductor (base material) which comprises the terminal connection board parts 2 and 3 and the narrow strip board part 4 consists of the same copper alloy as a conductive wire. On the other hand, the low melting point metal tip 6 is made of tin (Sn) having a melting point lower than that of copper (Cu), melts due to a temperature rise due to energization, and diffuses into the fusing part 4b to form an alloy phase. .

一対の端子接続板部２、３のうちの一方の端子接続板部３（例えば、電流の流れる方向の下流側の端子接続板部）の外周縁の内側には、端子をボルト締めする取付孔３ａの他に、単数または複数個の一定サイズのスリット１０が穿設されている。スリット１０は、端子接続板部３の放熱量を調整し可溶体４の溶断特性を調整するために個数が増減される切欠部である。スリット１０の個数は、端子接続板部３をプレス成形する金型に取り付ける駒Ｓを取り替えることにより管理される。   A mounting hole for bolting the terminal inside the outer peripheral edge of one of the pair of terminal connection plate portions 2 and 3 (for example, the terminal connection plate portion on the downstream side in the direction of current flow). In addition to 3a, one or a plurality of slits 10 of a certain size are formed. The slit 10 is a notch part whose number is increased or decreased in order to adjust the heat radiation amount of the terminal connection plate part 3 and adjust the fusing characteristics of the fusible body 4. The number of slits 10 is managed by replacing the piece S attached to the die for press-molding the terminal connection plate portion 3.

図２は、スリット１０の個数によって溶断特性が変化することを示す溶断特性図である。   FIG. 2 is a fusing characteristic diagram showing that fusing characteristics vary depending on the number of slits 10.

この図２から分かるように、スリット１０の数が増加する（例えば４個になる）と、端子接続板部３の放熱量が減り、その結果、溶断時間が早くなる。また、スリット１０の数を減少する（例えば１個になる）と、端子接続板部３の放熱量が増え，その結果、溶断時間が遅くなる。   As can be seen from FIG. 2, when the number of slits 10 is increased (for example, four), the amount of heat released from the terminal connection plate portion 3 is reduced, and as a result, the fusing time is shortened. Further, when the number of slits 10 is reduced (for example, one), the heat radiation amount of the terminal connection plate portion 3 is increased, and as a result, the fusing time is delayed.

この結果を用いて、図３に示すように、端子２０Ａ〜２０Ｃの種類ごとに、スリット１０の個数を違えたヒューズを組み合わせる。例えば、端子接続板部３に接続される端子の放熱量が大きくなるほど、端子接続板部３の放熱量を減らすために、スリット１０の個数を増やす。こうすることで、放熱量が大きい端子２０Ｃを接続することによりヒューズの溶断時間が遅れ気味になるのを補正することができる。また、端子接続板部３に接続される端子の放熱量が小さくなるほど、端子接続板部３の放熱量を増やすために、スリット１０の個数を減らす。こうすることで、放熱量が小さい端子２０Ａを接続することによりヒューズの溶断時間が早まり気味になるのを補正することができる。   Using this result, as shown in FIG. 3, fuses having different numbers of slits 10 are combined for each type of terminals 20 </ b> A to 20 </ b> C. For example, the number of slits 10 is increased in order to reduce the heat dissipation amount of the terminal connection plate portion 3 as the heat dissipation amount of the terminal connected to the terminal connection plate portion 3 increases. By doing so, it is possible to correct the fact that the fusing time of the fuse is delayed by connecting the terminal 20C having a large heat radiation amount. Further, the number of slits 10 is reduced in order to increase the heat dissipation amount of the terminal connection plate portion 3 as the heat dissipation amount of the terminal connected to the terminal connection plate portion 3 decreases. By doing so, it is possible to correct that the fusing time of the fuse is shortened by connecting the terminal 20A having a small heat dissipation amount.

図３に示すパターンＡでは、放熱量の小さな端子２０Ａを用いるとき、スリット１０の個数が１個の放熱量が大きなヒューズを組み合わせる。また、パターンＢでは、放熱量の中くらいの端子２０Ｂを用いるとき、スリット１０の個数が２個の放熱量が中くらいのヒューズを組み合わせる。また、パターンＣでは、放熱量の大きな端子２０Ｃを用いるとき、スリット１０の個数が４個の放熱量が小さなヒューズを組み合わせる。   In the pattern A shown in FIG. 3, when the terminal 20 </ b> A having a small heat dissipation amount is used, a fuse having a large heat dissipation amount is combined with one slit 10. Further, in the pattern B, when the terminal 20B having a medium heat dissipation amount is used, a fuse having a medium heat dissipation amount of two slits 10 is combined. In the pattern C, when a terminal 20C having a large heat dissipation amount is used, a fuse having a small heat dissipation amount of four slits 10 is combined.

こうすることにより、図４に示すように、パターンＡの場合もパターンＢの場合もパターンＣの場合も、溶断特性を一定の範囲に揃えることができる。即ち、端子接続板部３のプレス成形時にプレス金型の駒Ｓを取り替えてスリット１０の個数を増減するだけで、簡単に端子接続板部３に接続する端子２０Ａ〜２０Ｃの種類によらず、ヒューズ１の溶断特性の均一化を図ることができる。   By doing so, as shown in FIG. 4, in the case of pattern A, pattern B, and pattern C, the fusing characteristics can be made uniform. That is, only by changing the number S of the slits 10 by changing the press die piece S at the time of press molding of the terminal connection plate portion 3, regardless of the type of the terminals 20A to 20C connected to the terminal connection plate portion 3, The fusing characteristics of the fuse 1 can be made uniform.

なお、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。   In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

例えば、上記実施形態では、切欠部として一定サイズのスリット１０を設ける場合を例に挙げ、スリット１０の個数の増減により、ヒューズの溶断特性を調整する場合について述べたが、本発明はどのような切欠部を用いてもよく、また、切欠部の個数の代わりに切欠部の大きさを増減させること、あるいは、切欠部の個数と大きさを共に増減させることによっても、ヒューズの溶断特性を調整することができる。   For example, in the above embodiment, the case where the slit 10 having a certain size is provided as the notch is described as an example, and the case where the fusing characteristics of the fuse is adjusted by increasing or decreasing the number of the slits 10 is described. Notches may be used, and the fusing characteristics of the fuse can be adjusted by increasing or decreasing the size of the notches instead of the number of notches, or by increasing or decreasing both the number and size of the notches. can do.

ここで、上述した本発明に係るヒューズ及びヒューズの溶断特性調整方法の実施形態の特徴をそれぞれ以下［１］〜［３］に簡潔に纏めて列記する。   Here, the features of the above-described embodiment of the fuse and the method for adjusting the fusing characteristics of the fuse according to the present invention are briefly summarized and listed in the following [1] to [3], respectively.

［１］ 両端に一対の端子接続板部（２、３）を有し、該一対の端子接続板部（２、３）の間に該両端子接続板部（２、３）を導通接続し且つ過電流が流れた時に溶断する可溶部（４）が形成されたヒューズ（１）であって、
前記一対の端子接続板部（２、３）のうちの少なくとも一方の前記端子接続板部（３）に、該端子接続板部（３）の放熱量を調整し前記可溶部（４）の溶断特性を調整するために個数及び大きさの少なくとも一方が増減される切欠部（１０）が設けられていることを特徴とするヒューズ（１）。 [1] A pair of terminal connection plate portions (2, 3) are provided at both ends, and both the terminal connection plate portions (2, 3) are electrically connected between the pair of terminal connection plate portions (2, 3). And a fuse (1) formed with a fusible part (4) that melts when an overcurrent flows,
The at least one terminal connection plate portion (3) of the pair of terminal connection plate portions (2, 3) is adjusted to adjust the heat radiation amount of the terminal connection plate portion (3), and the soluble portion (4) A fuse (1) characterized in that a notch (10) in which at least one of the number and size is increased or decreased to adjust the fusing characteristics is provided.

［２］ 前記切欠部（１０）が、前記端子接続板部（３）の外周縁の内側に穿設された一定サイズのスリット（１０）であり、該スリット（１０）の個数の増減によって、前記端子接続板部（３）の放熱量が調整されることを特徴とする上記［１］に記載のヒューズ。   [2] The notch (10) is a slit (10) of a certain size drilled inside the outer peripheral edge of the terminal connection plate (3). By increasing or decreasing the number of slits (10), The fuse as described in [1] above, wherein the heat radiation amount of the terminal connection plate portion (3) is adjusted.

［３］ 両端に一対の端子接続板部（２、３）を有し、該一対の端子接続板部（２、３）の間に該両端子接続板部（２、３）を導通接続し且つ過電流が流れた時に溶断する可溶部（４）が形成されたヒューズ（１）の溶断特性調整方法であって、
前記一対の端子接続板部（２、３）のうちの少なくとも一方の前記端子接続板部（３）に一定サイズのスリット（１０）を穿設し、
前記端子接続板部（３）に接続される端子（２０Ａ、２０Ｂ、２０Ｃ）の放熱量が大きい場合は、前記端子接続板部（３）の放熱量を減らすために前記スリット（１０）の個数を増やし、前記端子接続板部（３）に接続される端子（２０Ａ、２０Ｂ、２０Ｃ）の放熱量が小さい場合は、前記端子接続板部（３）の放熱量を増やすために前記スリット（１０）の個数を減らすことを特徴とするヒューズ（１）の溶断特性調整方法。 [3] A pair of terminal connection plate portions (2, 3) are provided at both ends, and the both terminal connection plate portions (2, 3) are electrically connected between the pair of terminal connection plate portions (2, 3). And a method for adjusting the fusing characteristics of the fuse (1) in which the fusible part (4) fusing when an overcurrent flows is formed,
A slit (10) having a predetermined size is formed in at least one of the terminal connection plate portions (3) of the pair of terminal connection plate portions (2, 3),
When the heat radiation amount of the terminals (20A, 20B, 20C) connected to the terminal connection plate portion (3) is large, the number of the slits (10) is reduced in order to reduce the heat radiation amount of the terminal connection plate portion (3). When the heat radiation amount of the terminals (20A, 20B, 20C) connected to the terminal connection plate portion (3) is small, the slit (10 The method of adjusting the fusing characteristics of the fuse (1), wherein the number of

１ ヒューズ
２，３ 端子接続板部
４ 可溶部
１０ スリット 1 Fuse 2, 3 Terminal connection plate part 4 Fusible part 10 Slit

Claims (3)

両端に一対の端子接続板部を有し、該一対の端子接続板部の間に該両端子接続板部を導通接続し且つ過電流が流れた時に溶断する可溶部が形成されたヒューズであって、
前記一対の端子接続板部のうちの少なくとも一方の前記端子接続板部に、該端子接続板部の放熱量を調整し前記可溶部の溶断特性を調整するために個数及び大きさの少なくとも一方が増減される切欠部が設けられていることを特徴とするヒューズ。 A fuse having a pair of terminal connection plate portions at both ends, a conductive portion between the pair of terminal connection plate portions, and a fusible portion that is blown when overcurrent flows. There,
At least one of the number and the size of the pair of terminal connection plate portions to adjust the heat dissipation amount of the terminal connection plate portion and the fusing characteristics of the soluble portion on the terminal connection plate portion of at least one of the pair of terminal connection plate portions. A fuse having a notch portion for increasing / decreasing the height. 前記切欠部が、前記端子接続板部の外周縁の内側に穿設された一定サイズのスリットであり、該スリットの個数の増減によって、前記端子接続板部の放熱量が調整されることを特徴とする請求項１に記載のヒューズ。   The notch is a slit of a certain size drilled inside the outer peripheral edge of the terminal connection plate portion, and the heat dissipation amount of the terminal connection plate portion is adjusted by increasing or decreasing the number of the slits. The fuse according to claim 1. 両端に一対の端子接続板部を有し、該一対の端子接続板部の間に該両端子接続板部を導通接続し且つ過電流が流れた時に溶断する可溶部が形成されたヒューズの溶断特性調整方法であって、
前記一対の端子接続板部のうちの少なくとも一方の前記端子接続板部に一定サイズのスリットを穿設し、
前記端子接続板部に接続される端子の放熱量が大きい場合は、前記端子接続板部の放熱量を減らすために前記スリットの個数を増やし、前記端子接続板部に接続される端子の放熱量が小さい場合は、前記端子接続板部の放熱量を増やすために前記スリットの個数を減らすことを特徴とするヒューズの溶断特性調整方法。 A fuse having a pair of terminal connection plate portions at both ends, and a fusible portion that is electrically connected between the pair of terminal connection plate portions and melts when overcurrent flows. A fusing characteristic adjustment method,
Drilling a slit of a certain size in at least one of the pair of terminal connection plate portions,
When the amount of heat released from the terminal connected to the terminal connecting plate is large, the number of slits is increased to reduce the amount of heat released from the terminal connecting plate, and the amount of heat released from the terminal connected to the terminal connecting plate Is small, the number of slits is reduced in order to increase the heat radiation amount of the terminal connecting plate portion, and the fusing characteristic adjustment method for fuses,
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021107581A1 (en) 2020-04-07 2021-10-07 Yazaki Corporation Fuse unit
WO2023120198A1 (en) * 2021-12-24 2023-06-29 株式会社オートネットワーク技術研究所 Fuse unit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457339U (en) * 1977-09-29 1979-04-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457339U (en) * 1977-09-29 1979-04-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021107581A1 (en) 2020-04-07 2021-10-07 Yazaki Corporation Fuse unit
WO2023120198A1 (en) * 2021-12-24 2023-06-29 株式会社オートネットワーク技術研究所 Fuse unit

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