JP2007059255A - Fuse - Google Patents

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Publication number
JP2007059255A
JP2007059255A JP2005244447A JP2005244447A JP2007059255A JP 2007059255 A JP2007059255 A JP 2007059255A JP 2005244447 A JP2005244447 A JP 2005244447A JP 2005244447 A JP2005244447 A JP 2005244447A JP 2007059255 A JP2007059255 A JP 2007059255A
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fusing
fuse
parts
cutting
electrode
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JP4732836B2 (en
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Manabu Hashikura
学 橋倉
Futoshi Nishida
太 西田
Norio Isshiki
功雄 一色
Hiroyoshi Ikeda
博榮 池田
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Sumitomo Wiring Systems Ltd
AutoNetworks Technologies Ltd
Sumitomo Electric Industries Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuse in which an occupying volume is made smaller and in which down-sizing of an electrical connection box or the like to be attached can be realized. <P>SOLUTION: To a flat plate shaped fusing member 11 provided with a fusing part 15, a fuse 10 is constituted by connecting a similarly flat plate shaped common electrode 12 and a plurality of individual electrodes 13. Since the whole fuse 10 is formed in a flat plate shape, the volume which the fuse 110 occupies can be made smaller and a site to be attached can be made down-sized. Moreover, the fusing part 15 is composed of a plurality of parts 17A to 17D capable of being cut which are capable of being cut selectively. By cutting properly the parts 17A to 17D capable of being cut according to circuit specifications, fuse characteristics can be set at the a desired value. By this, since versatility of the fuse 10 is improved, a manufacturing cost can be suppressed lower and furthermore, parts management can be made easier. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ヒューズに関する。   The present invention relates to a fuse.

ヒューズは、例えば自動車の電気接続箱内に装着されて電気回路に組み込まれ、所定値以上の電流が流れた場合にその電流を遮断するのに用いられる。近年では、自動車に搭載される電装品の増加に伴い、電気接続箱に組み込まれるヒューズの数も増加している。なお、ヒューズを使用する電気接続箱としては、例えば下記の特許文献1に開示されたものがある。
特開2003−218562公報
For example, the fuse is mounted in an electric junction box of an automobile and incorporated in an electric circuit, and is used to cut off the current when a current exceeding a predetermined value flows. In recent years, with the increase in electrical components mounted on automobiles, the number of fuses incorporated in electrical junction boxes has also increased. An example of an electrical junction box that uses a fuse is disclosed in Patent Document 1 below.
JP 2003-218562 A

このようなヒューズは、一般的には、溶断部を収容した略箱形の樹脂ケースから一対の電極部を突出させた形態をなしており、上記のように、電気接続箱に多数のヒューズが組み込まれる場合には、ヒューズが大きな容積を占有することになり、電気接続箱の小型化の妨げになっていた。   Such a fuse generally has a form in which a pair of electrode portions protrude from a substantially box-shaped resin case containing a fusing portion. As described above, a large number of fuses are provided in an electrical junction box. When assembled, the fuse occupies a large volume, which hinders the miniaturization of the electrical junction box.

本発明は上記のような事情に基づいて完成されたものであって、小型化を図ることが可能なヒューズを提供することを目的とする。   The present invention has been completed based on the above situation, and an object thereof is to provide a fuse that can be miniaturized.

上記の目的を達成するための手段として、請求項1の発明に係るヒューズは、複数の電極部と、前記電極部間に架設され過電流によって溶断する溶断部とを備えたヒューズであって、前記溶断部は、平板状をなす導電性の板材からなるとともに、互いに並列に配されかつ選択的に切断可能な複数の切断可能部を備えており、前記電極部は、平板状をなす導電性の板材からなるとともに、前記溶断部の板面に対し平行に配置されているところに特徴を有する。   As a means for achieving the above object, a fuse according to the invention of claim 1 is a fuse comprising a plurality of electrode parts and a fusing part that is bridged between the electrode parts and is blown by overcurrent, The fusing portion is made of a conductive plate material having a flat plate shape, and includes a plurality of severable portions that are arranged in parallel to each other and can be selectively cut, and the electrode portion has a conductive plate shape. And is characterized in that it is arranged in parallel to the plate surface of the fusing part.

請求項2の発明は、請求項1に記載のものにおいて、前記電極部は、前記溶断部の一端から延出した短電極部と、前記溶断部の他端から一端側へ折り返し状に延出し、かつその先端部が前記短電極部に並ぶように配置された折り返し電極部とを備えているところに特徴を有する。   According to a second aspect of the present invention, in the first aspect, the electrode portion includes a short electrode portion extending from one end of the fusing portion and a folded shape extending from the other end of the fusing portion to one end side. And a folded electrode portion arranged so that a tip portion thereof is aligned with the short electrode portion.

請求項3の発明は、請求項2に記載のものにおいて、前記溶断部は、複数個が並列に配されており、前記短電極部は、前記複数の溶断部の一端側に各溶断部毎に個別に接続され、前記折り返し電極部は、前記複数の溶断部の他端側に共通に接続されているところに特徴を有する。   According to a third aspect of the present invention, in the second aspect, a plurality of the fusing parts are arranged in parallel, and the short electrode part is provided at one end side of the fusing parts for each fusing part. The folded electrode portion is characterized in that it is commonly connected to the other end side of the plurality of fusing portions.

請求項4の発明は、請求項1から請求項3のいずれかに記載のものにおいて、前記電極部と前記溶断部とは、互いに異なる材質よりなるところに特徴を有する。   According to a fourth aspect of the present invention, there is provided a device according to any one of the first to third aspects, wherein the electrode portion and the fusing portion are made of different materials.

請求項5の発明は、請求項1から請求項4のいずれかに記載のものにおいて、前記溶断部は、互いに溶断特性が異なる複数種類の前記切断可能部を備えているところに特徴を有する。   The invention of claim 5 is characterized in that, in the invention according to any one of claims 1 to 4, the fusing part is provided with a plurality of types of the cuttable parts having different fusing characteristics.

請求項6の発明は、請求項5に記載のものにおいて、前記複数種類の切断可能部は、厚さ寸法が互いに等しく、かつ幅寸法が互いに異なるように構成されているところに特徴を有する。   A sixth aspect of the invention is characterized in that, in the fifth aspect of the invention, the plurality of types of cutable portions are configured such that the thickness dimensions are equal to each other and the width dimensions are different from each other.

請求項7の発明は、請求項1から請求項6のいずれかに記載のものにおいて、前記溶断部が有する複数の切断可能部のうち一部の切断可能部を切断可能に配置された切断刃を有する切断治具と、前記切断治具を保持可能な治具保持部とを備えているところに特徴を有する。   A seventh aspect of the present invention provides the cutting blade according to any one of the first to sixth aspects, wherein a part of the severable part of the plurality of severable parts of the fusing part is severably arranged. And a jig holding part capable of holding the cutting jig.

請求項8の発明は、請求項7に記載のものにおいて、前記切断刃による前記一部の切断可能部に対する切断動作を案内する案内手段を備えているところに特徴を有する。   The invention according to claim 8 is characterized in that, in the apparatus according to claim 7, there is provided a guide means for guiding a cutting operation to the part of the cuttable portion by the cutting blade.

請求項9の発明は、請求項7または請求項8に記載のものにおいて、前記切断刃は絶縁性を有しており、前記治具保持部は、前記切断刃が前記一部の切断可能部を分断した状態で、前記切断治具を保持するところに特徴を有する。   According to a ninth aspect of the present invention, in the one according to the seventh or eighth aspect, the cutting blade has an insulating property, and the jig holding portion is configured such that the cutting blade is part of the cuttable portion. The cutting jig is characterized in that the cutting jig is held in a state of being divided.

請求項10の発明は、請求項7から請求項9のいずれかに記載のものにおいて、前記切断治具は、前記一部の切断可能部を切断することにより得られる前記溶断部の溶断特性を識別させるための識別手段を備えているところに特徴を有する。   The invention according to claim 10 is the one according to any one of claims 7 to 9, wherein the cutting jig has a fusing characteristic of the fusing part obtained by cutting the part of the cuttable part. It is characterized by having an identification means for identifying.

<請求項1の発明>
ヒューズ全体が平板状に形成されるため、ヒューズが占める容積を小さくすることができ、このヒューズが装着される部位の小型化を図ることができる。また、選択的に切断可能な複数の切断可能部を回路仕様に応じて適宜切断することにより、溶断部の溶断特性(容量)を所望の値に設定することができる。これにより、ヒューズの汎用性が高まるため、製造コストを低く抑えることができ、さらに部品管理を容易なものとすることができる。
<Invention of Claim 1>
Since the entire fuse is formed in a flat plate shape, the volume occupied by the fuse can be reduced, and the portion where the fuse is mounted can be reduced in size. Moreover, the fusing characteristic (capacity) of a fusing part can be set to a desired value by appropriately cutting a plurality of severable parts that can be selectively cut according to circuit specifications. As a result, the versatility of the fuse is increased, so that the manufacturing cost can be kept low, and the component management can be facilitated.

<請求項2の発明>
折り返し電極部の先端がもう一方の短電極部に並ぶように配置されているため、ヒューズが装着される側の部位のさらなる小型化を図ることができる。
<Invention of Claim 2>
Since the tip of the folded electrode portion is arranged so as to line up with the other short electrode portion, it is possible to further reduce the size of the portion on the side where the fuse is mounted.

<請求項3の発明>
複数の溶断部の一端側(一極側)に個別に短電極部を接続し、他端側(他極側)に共通に折り返し電極部を接続する構成としたため、多数のヒューズを設ける場合に比べて、部品点数を低減することができる。これにより、組み付けの手間を軽減することができ、さらに部品管理を容易にすることができる。
<Invention of Claim 3>
When multiple fuses are provided, the short electrode part is individually connected to one end side (one pole side) of the plurality of fusing parts, and the folded electrode part is connected to the other end side (other pole side) in common. In comparison, the number of parts can be reduced. As a result, it is possible to reduce the time and effort of assembling and further facilitate parts management.

<請求項4の発明>
電極部と溶断部の材質が互いに異なるため、溶断部の材質を自由に選択することができ、ヒューズ容量の設計自由度が増す。
<Invention of Claim 4>
Since the materials of the electrode part and the fusing part are different from each other, the material of the fusing part can be freely selected, and the design flexibility of the fuse capacity is increased.

<請求項5の発明>
溶断部は、互いに溶断特性が異なる複数種類の切断可能部を備えて構成されているため、各切断可能部が互いに同じ溶断特性を持つように構成した場合に比べて、設定できる溶断特性のバリエーションが増え、より汎用性が高まる。
<Invention of Claim 5>
Since the fusing part is configured with multiple types of cutable parts with different fusing characteristics, variations in fusing characteristics that can be set compared to the case where each cuttable part has the same fusing characteristics Increases versatility.

<請求項6の発明>
溶断特性(容量)が互いに異なる複数種類の切断可能部は、厚さ寸法が互いに等しく、かつ幅寸法が互いに異なるように構成されているため、容量の大きな切断可能部を設ける場合にも溶断部の厚みが増すことがなく、ひいてはヒューズ全体の薄型化を図ることができる。
<Invention of Claim 6>
Plural types of cutable parts having different fusing characteristics (capacity) are configured such that the thickness dimensions are equal to each other and the width dimensions are different from each other. Therefore, the thickness of the fuse can be reduced.

<請求項7の発明>
複数の切断可能部のうちの一部を切断するように配置された切断刃を備えた切断治具によって、一部の切断可能部を切断することで、ヒューズの溶断特性を容易に所望の値に設定することができる。
<Invention of Claim 7>
By cutting a part of the severable part with a cutting jig provided with a cutting blade arranged to cut a part of the plurality of severable parts, the fusing characteristics of the fuse can be easily set to a desired value. Can be set to

<請求項8の発明>
案内手段によって切断刃による切断動作が案内されるため、切断可能部の切断作業を円滑に行うことができる。
<Invention of Claim 8>
Since the cutting operation by the cutting blade is guided by the guide means, the cutting operation of the cuttable portion can be performed smoothly.

<請求項9の発明>
絶縁性の切断刃が切断可能部を分断した状態で切断治具が保持されるため、分断された切断可能部の端部同士が確実に絶縁状態に保たれる。
<Invention of Claim 9>
Since the cutting jig is held in a state where the insulative cutting blade divides the severable portion, the ends of the severable severable portion are reliably kept in an insulated state.

<請求項10の発明>
切断治具によって切断可能部を切断した後に、切断治具が有する識別手段によって溶断部の溶断特性を容易に識別することができる。
<Invention of Claim 10>
After cutting the cuttable part with the cutting jig, the fusing characteristics of the fusing part can be easily identified by the identifying means of the cutting jig.

<第1実施形態>
次に本発明の第1実施形態を図1から図4によって説明する。
本実施形態のヒューズ10は、例えば、自動車のヒューズボックス内に装着されて電気回路に組み込まれ、所定値以上の電流が流れた場合にその電流を遮断するのに用いられる。このヒューズ10は、一枚の平板状の溶断部材11に対し、同じく平板状の1つの共通電極12(折り返し電極部)と、複数(図示7つ)の個別電極13(短電極部)とを接続して構成されている。
<First Embodiment>
Next, a first embodiment of the present invention will be described with reference to FIGS.
For example, the fuse 10 of this embodiment is mounted in a fuse box of an automobile and incorporated in an electric circuit, and is used to cut off a current when a current of a predetermined value or more flows. This fuse 10 has one flat common electrode 12 (folded electrode portion) and a plurality (seven in the figure) of individual electrodes 13 (short electrode portions) for a single flat plate-shaped fusing member 11. Connected and configured.

溶断部材11は、例えばCu,Ag,Zn又はそれらの合金などの導電性の金属板材によって形成されている。溶断部材11は、左右方向に延びた帯状の基部11Aと、基部11Aの下縁から一定間隔で櫛歯状に突出した複数(図示7つ)の枝部11Bとから構成されており、各枝部11Bには、後述するように、それぞれ過電流が流れた場合に溶断する溶断部15が設けられている。   The fusing member 11 is formed of a conductive metal plate material such as Cu, Ag, Zn, or an alloy thereof. The fusing member 11 is composed of a strip-like base portion 11A extending in the left-right direction and a plurality (seven in the figure) of branch portions 11B protruding in a comb-like shape from the lower edge of the base portion 11A at each branch. As will be described later, the part 11B is provided with a fusing part 15 that blows when an overcurrent flows.

各個別電極13は、例えばSnメッキ付Cuまたはその合金などの長方形状をなす導電性の金属板材によって形成されている。各個別電極13は、それぞれその上端部に枝部11Bの先端部(溶断部15の一端)が互いに板面を当接させた状態で重ねられ、溶接部14にて互いに溶着されている。また、個別電極13は、溶断部15の一端から溶断部15の架設方向(下方向)に延出した端子部13Aを備えている。   Each individual electrode 13 is formed of a conductive metal plate material having a rectangular shape such as Cu with Sn plating or an alloy thereof. Each individual electrode 13 is overlapped with the top end of the branch portion 11B (one end of the fusing portion 15) in contact with the plate surfaces thereof and welded to each other at the welded portion 14. The individual electrode 13 includes a terminal portion 13 </ b> A extending from one end of the fusing portion 15 in the installation direction (downward direction) of the fusing portion 15.

共通電極12は、個別電極13と同じ材質で、かつ個別電極13と等しい厚みを有する導電性の金属板材からなり、長方形状の本体部12Aを備えている。この本体部12Aの下部には、基部11A(溶断部15の他端)が互いに板面を当接させた状態で重ねられ、溶接部14にて互いに溶着されている。なお、図2に示すように、共通電極12と各個別電極13とは溶断部材11に対して同じ面側に接続されており、ヒューズ10は溶断部材11の板厚と共通電極12(または個別電極13)の板厚とを加えた厚み寸法を有する。本体部12Aの右端部は、溶断部材11の側端よりも外側(図1の右側)に張り出しており、その下端から溶断部15に対して板幅方向に並んで平行に延出した延出部12Bが設けられている。つまり、共通電極12は、全体として溶断部15の一端から他端へ向けて延出した折り返し状をなしている。さらに、延出部12Bの先端部には、端子部12Cが設けられており、この端子部12Cは、各個別電極13のうち右端位置の端子部13Aに対し、右側(板幅方向)に並び、かつ各端子部13A間の間隔と等しい間隔を空けるように配置されている。本ヒューズ10は、電気接続箱に設けられたヒューズ装着部(図示せず)に対し、図1の下端側から差し込まれることで、各端子部12A,13Bがヒューズ装着部に設けられた雌端子と電気的に接続されるようになっている。   The common electrode 12 is made of a conductive metal plate made of the same material as the individual electrode 13 and has the same thickness as the individual electrode 13, and includes a rectangular main body 12A. The base 11A (the other end of the fusing part 15) is superposed on the lower part of the main body part 12A with the plate surfaces in contact with each other, and is welded to each other by the welded part 14. 2, the common electrode 12 and each individual electrode 13 are connected to the same surface side with respect to the fusing member 11, and the fuse 10 has the thickness of the fusing member 11 and the common electrode 12 (or individual electrodes). It has a thickness dimension including the plate thickness of the electrode 13). The right end portion of the main body portion 12A projects outward (right side in FIG. 1) from the side end of the fusing member 11, and extends from the lower end in parallel to the fusing portion 15 in the plate width direction. A portion 12B is provided. That is, the common electrode 12 has a folded shape extending from one end of the fusing part 15 to the other end as a whole. Furthermore, a terminal portion 12C is provided at the distal end portion of the extending portion 12B, and this terminal portion 12C is arranged on the right side (plate width direction) with respect to the terminal portion 13A at the right end position of each individual electrode 13. And it arrange | positions so that the space | interval equal to the space | interval between each terminal part 13A may be left | separated. The fuse 10 is inserted into a fuse mounting portion (not shown) provided in the electrical junction box from the lower end side in FIG. 1 so that the terminal portions 12A and 13B are female terminals provided in the fuse mounting portion. And is electrically connected.

各溶断部15は、共通電極12と各個別電極13間との間に並列となるように架設されている。各溶断部15は、図3にも示すように、架設方向に沿って延びた複数のスリット16により幅方向に複数(図示4つ)に分断されており、分断されたそれぞれの部位が選択的に切断可能な切断可能部17A〜17Dとなっている。各切断可能部17A〜17Dは、回路上互いに並列になっており、互いに幅寸法(断面積)を異ならせることにより、それぞれ異なる溶断特性を有するように構成されている。一例としては、一個の切断可能部17A〜17Dのヒューズ容量が、順に10A,5A,2.5A,1Aというように互いに異なる値に設定される。   Each fusing part 15 is constructed so as to be in parallel between the common electrode 12 and each individual electrode 13. As shown in FIG. 3, each fusing part 15 is divided into a plurality (four in the figure) in the width direction by a plurality of slits 16 extending along the erection direction. It becomes the cut | disconnectable part 17A-17D which can be cut | disconnected to. The cuttable portions 17A to 17D are arranged in parallel with each other on the circuit, and are configured to have different fusing characteristics by making the width dimension (cross-sectional area) different from each other. As an example, the fuse capacities of one of the disconnectable portions 17A to 17D are set to different values such as 10A, 5A, 2.5A, and 1A in order.

上記のように構成されたヒューズ10が電気回路に組み込まれて使用される場合には、その回路の仕様に応じて各溶断部15における切断可能部17A〜17Dの一部が選択的に切断される。図4は、その使用形態の一例を示したものであり、溶断部には同図左側から順に15A〜15Gの符号を付している。同図のように、溶断部15Aは切断可能部17A〜17Dを切断せずに全て残し、溶断部15Bは切断可能部17A,17Bを残して他の切断可能部17C,17Dを切断している。以下同様に、溶断部15Cは切断可能部17A,17C、溶断部15Dは切断可能部17A、溶断部15Eは切断可能部17B、溶断部15Fは切断可能部17C、溶断部15Gは切断可能部17Dをそれぞれ残して他の切断可能部を切断している。これにより、各溶断部15A〜15Gの溶断特性が互いに異なることになり、一例としては、各溶断部15A〜15Gのヒューズ容量が順に、18.5A,15A,12.5A,10A,5A,2.5A,1Aというように様々な値に設定される。   When the fuse 10 configured as described above is used by being incorporated in an electric circuit, a part of the cuttable portions 17A to 17D in each fusing portion 15 is selectively cut according to the specifications of the circuit. The FIG. 4 shows an example of the usage pattern, and the fusing parts are given the reference numerals 15A to 15G in order from the left side of the figure. As shown in the figure, the fusing part 15A leaves all the cutable parts 17A to 17D without cutting, and the fusing part 15B cuts the other cutable parts 17C and 17D leaving the cutable parts 17A and 17B. . Similarly, the fusing part 15C is severable parts 17A and 17C, the fusing part 15D is severable part 17A, the fusing part 15E is severable part 17B, the fusing part 15F is severable part 17C, and the fusing part 15G is severable part 17D. The other cleavable parts are cut, leaving each of them. Thereby, the fusing characteristics of the fusing parts 15A to 15G are different from each other. As an example, the fuse capacities of the fusing parts 15A to 15G are sequentially 18.5A, 15A, 12.5A, 10A, 5A, 2 Various values such as .5A and 1A are set.

以上のように本実施形態によれば、ヒューズ10全体が平板状に形成されるため、ヒューズ10が占める容積を小さくすることができ、装着される部位の小型化を図ることができる。
また、選択的に切断可能な複数の切断可能部17A〜17Dを回路仕様に応じて適宜切断することにより、溶断部15の溶断特性(容量)を所望の値に設定することができる。これにより、ヒューズ10の汎用性が高まるため、製造コストを低く抑えることができ、さらに部品管理を容易なものとすることができる。
As described above, according to the present embodiment, since the entire fuse 10 is formed in a flat plate shape, the volume occupied by the fuse 10 can be reduced, and the mounted portion can be downsized.
Moreover, the fusing characteristic (capacity | capacitance) of the fusing part 15 can be set to a desired value by suitably cut | disconnecting several cutting | disconnection part 17A-17D which can be cut | disconnected selectively according to circuit specifications. As a result, the versatility of the fuse 10 increases, so that the manufacturing cost can be kept low, and the component management can be facilitated.

また、共通電極12の先端がもう一方の個別電極13に並ぶように配置されているため、このヒューズ10が装着される側の部位のさらなる小型化を図ることができる。   Further, since the tip of the common electrode 12 is arranged so as to line up with the other individual electrode 13, it is possible to further reduce the size of the portion on the side where the fuse 10 is mounted.

また、各電極12,13と溶断部15の材質が互いに異なるため、溶断部15の材質を自由に選択することができ、ヒューズ容量の設計自由度が増す。   Further, since the materials of the electrodes 12 and 13 and the fusing part 15 are different from each other, the material of the fusing part 15 can be freely selected, and the degree of freedom in designing the fuse capacity is increased.

また、溶断部15は、互いに溶断特性が異なる複数種類の切断可能部17A〜17Dを備えて構成されているため、各切断可能部17A〜17Dが互いに同じ溶断特性を持つように構成した場合に比べて、設定できる溶断特性(ヒューズ容量)のバリエーションが増え、より汎用性が高まる。   In addition, since the fusing part 15 includes a plurality of types of cutable parts 17A to 17D having different fusing characteristics, the fusing parts 17A to 17D have the same fusing characteristics. Compared to this, variations in the fusing characteristics (fuse capacity) that can be set increase, and versatility increases.

さらに、溶断特性(容量)が互いに異なる複数種類の切断可能部17A〜17Dは、厚さ寸法が互いに等しく、かつ幅寸法が互いに異なるように構成されているため、容量の大きな切断可能部を設ける場合にも溶断部15の厚みが増すことがなく、ひいてはヒューズ10全体の薄型化を図ることができる。   Further, since the plurality of types of cutable portions 17A to 17D having different fusing characteristics (capacity) are configured to have the same thickness dimension and different width dimensions, a cutable portion having a large capacity is provided. Even in this case, the thickness of the fusing part 15 does not increase, and as a result, the entire fuse 10 can be thinned.

<第2実施形態>
次に本発明の第2実施形態について図5から図10を参照して説明する。
本実施形態のヒューズ20は、ヒューズ本体21と、このヒューズ本体21を収容するケーシング30と、ケーシング30に対して選択的に装着される複数の切断治具40とから構成されている。ヒューズ本体21は、第1実施形態のヒューズ10に相当する構成であり、図6に示すように、平板状の溶断部材22に、1個の共通電極23(折り返し電極)と、複数(図示4つ)の個別電極24(短電極部)とを接続した構成となっている。なお、以下の説明において、第1実施形態と同様の機能を有する構成については説明を簡略にする。
Second Embodiment
Next, a second embodiment of the present invention will be described with reference to FIGS.
The fuse 20 according to the present embodiment includes a fuse body 21, a casing 30 that houses the fuse body 21, and a plurality of cutting jigs 40 that are selectively attached to the casing 30. The fuse body 21 has a configuration corresponding to the fuse 10 of the first embodiment. As shown in FIG. 6, a flat fusing member 22, one common electrode 23 (folded electrode), and a plurality (shown in FIG. 4). ) Individual electrodes 24 (short electrode portions). In the following description, the description of the configuration having the same function as in the first embodiment will be simplified.

溶断部材22は、長方形の基部22Aと、基部22Aの下縁から一定間隔で櫛歯状に突出した複数(図示4つ)の枝部22Bとから構成されており、各枝部22Bには、第1実施形態のものと同様に、選択的に切断可能な切断可能部17A〜17Dを備えた溶断部15が設けられている。   The fusing member 22 is composed of a rectangular base portion 22A and a plurality of (four in the figure) branch portions 22B protruding in a comb-like shape from the lower edge of the base portion 22A, and each branch portion 22B includes: Similar to the first embodiment, a fusing part 15 provided with selectively cutable parts 17A to 17D is provided.

各個別電極24は、それぞれその上端部上面に溶断部材22における枝部22Bの先端部が重ねて溶着されており、その下側に円形の取付孔25が貫通して形成されている。さらに、個別電極24の下端部は端子部24Aとなっている。   Each individual electrode 24 is welded so that the tip end portion of the branch portion 22B of the fusing member 22 is overlapped on the upper surface of the upper end portion, and a circular attachment hole 25 is formed therethrough. Further, the lower end portion of the individual electrode 24 is a terminal portion 24A.

共通電極23は、長方形状の本体部23Aを備え、その上面全体に溶断部材22の基部22Aが重ねられ、互いに溶着されている。また、共通電極23の本体部23Aと溶断部材22の基部22Aとには、それぞれ左右の角部に円形の取付孔26が貫通して形成されている。さらに、本体部23Aの右端からは延出部23Bが下方へ延出され、その延出部23Bの先端が端子部23Cになっている。   The common electrode 23 includes a rectangular main body 23A, and the base 22A of the fusing member 22 is superposed on the entire upper surface and welded together. In addition, circular attachment holes 26 are formed through the left and right corners of the main body portion 23A of the common electrode 23 and the base portion 22A of the fusing member 22, respectively. Further, an extending part 23B extends downward from the right end of the main body part 23A, and the tip of the extending part 23B is a terminal part 23C.

ケーシング30は、絶縁性の合成樹脂材からなり、ヒューズ本体21の形状に合わせて前後に偏平な箱形をなしている。そして、ケーシング30は、図6に示すように、前後に二分割されており、前側ケーシング30Aと後側ケーシング30Bとから構成されている。後側ケーシング30Bの前面には、図7にも示すように、ヒューズ本体21における共通電極23及び個別電極24の板厚方向における略後半部分を収容する取付凹部31が設けられている。この取付凹部31の底面には、ヒューズ本体21の各取付孔25,26に嵌合することでヒューズ本体21を位置決めする円柱状の取付突起32が突設されている。また、前側ケーシング30Aの後面には、ヒューズ本体21の板厚方向における略前半部分を受け入れる収容凹部33が設けられている。前側ケーシング30A及び後側ケーシング30Bは、ヒューズ本体21を前後から挟むようにして組み付けられ、組み付け状態では、ヒューズ本体21の各端子部23C,24Aがケーシング30の下方に突出された状態となる。   The casing 30 is made of an insulating synthetic resin material, and has a flat box shape in the front and rear according to the shape of the fuse body 21. And as shown in FIG. 6, the casing 30 is divided into two parts in the front-rear direction, and includes a front casing 30A and a rear casing 30B. As shown in FIG. 7, a mounting recess 31 is provided on the front surface of the rear casing 30 </ b> B. The mounting recess 31 accommodates substantially the latter half of the common electrode 23 and the individual electrode 24 in the fuse body 21 in the plate thickness direction. On the bottom surface of the mounting recess 31, a cylindrical mounting protrusion 32 is provided so as to position the fuse body 21 by fitting into the mounting holes 25 and 26 of the fuse body 21. An accommodation recess 33 is provided on the rear surface of the front casing 30A to receive a substantially front half portion of the fuse body 21 in the plate thickness direction. The front casing 30 </ b> A and the rear casing 30 </ b> B are assembled so as to sandwich the fuse main body 21 from the front and rear, and in the assembled state, the terminal portions 23 </ b> C and 24 </ b> A of the fuse main body 21 are protruded below the casing 30.

一方、切断治具40は、弾力性を有する絶縁性の合成樹脂材により一体に形成されている。この切断治具40は、図7及び図8に示すように、長方形の板状の基部41を備えており、さらにその基部41の上下両端部から前方に延出し先端が互いに外向きに折れ曲がって突出した形状の一対の係止片42を備えている。各係止片42の先端部には、前方へ向かうにつれて外側に張り出すように傾斜した案内面42Aが形成されている。また、基部41の後面には、上下方向の中央位置に、先端が断面楔状に尖った切断刃43が突設されている。この切断刃43は、切断治具40が後述する前側ケーシング30Aの治具保持部34に装着された時に、一つの溶断部15に対して前方から押し付けられ、その溶断部15が有する切断可能部17A〜17Dのうちの一部を切断する。切断治具40は、切断することのできる切断可能部17A〜17Dの組み合わせが互いに異なるものが複数種類用意されており、それぞれ切断刃43が幅方向について切断する切断可能部17A〜17Dに対応する位置に配置されている。即ち、図8等に示す切断治具40は、切断可能部17B,17C,17Dに対応した位置に切断刃43が配置されているが、他にも図示しないが、切断刃43が例えば切断可能部17A,17Cに対応した位置に配置されたものや、切断可能部17Bに対応した位置に配置されたもの等がある。また、切断治具40における基部41の前面には、その切断治具40により切断可能部17A〜17Dを切断した際に得られる溶断部15の溶断特性に関する表示44(具体的にはヒューズ容量を示す数値、図示した切断治具40では「10」(アンペア))が記されている。なお、この表示44は、切断治具40を治具保持部34に装着した後に容易に視認できる位置に設けられている。   On the other hand, the cutting jig 40 is integrally formed of an insulating synthetic resin material having elasticity. As shown in FIGS. 7 and 8, the cutting jig 40 includes a rectangular plate-like base portion 41, and further extends forward from both upper and lower end portions of the base portion 41, and the distal ends thereof are bent outward. A pair of locking pieces 42 having a protruding shape is provided. A guide surface 42 </ b> A that is inclined so as to project outward as it goes forward is formed at the tip of each locking piece 42. In addition, a cutting blade 43 whose tip is pointed like a wedge in a protruding manner is provided on the rear surface of the base 41 at the center position in the vertical direction. The cutting blade 43 is pressed from the front against one fusing part 15 when the cutting jig 40 is attached to the jig holding part 34 of the front casing 30A described later, and the cutting part 15 has the fusing part 15. A part of 17A to 17D is cut. A plurality of types of cutting jigs 40 having different combinations of severable parts 17A to 17D that can be cut are prepared. Each of the cutting jigs 40 corresponds to the severable parts 17A to 17D that the cutting blade 43 cuts in the width direction. Placed in position. That is, in the cutting jig 40 shown in FIG. 8 and the like, the cutting blade 43 is disposed at a position corresponding to the cuttable portions 17B, 17C, and 17D. There are those arranged at positions corresponding to the portions 17A and 17C, those arranged at positions corresponding to the cuttable portion 17B, and the like. In addition, on the front surface of the base 41 in the cutting jig 40, a display 44 (specifically, a fuse capacity is displayed on the fusing characteristics of the fusing part 15 obtained when the cutable parts 17 </ b> A to 17 </ b> D are cut by the cutting jig 40. In the illustrated cutting jig 40, “10” (ampere)) is indicated. The display 44 is provided at a position where it can be easily visually recognized after the cutting jig 40 is mounted on the jig holding portion 34.

前側ケーシング30Aには、図5及び図7等に示すように、各溶断部15の前方位置に切断治具40を装着可能な治具保持部34が設けられている。この治具保持部34は、収容凹部33に連なって開口した長方形状の装着孔35を備えており、この装着孔35の内径は切断治具40における基部41の外形よりやや大きい程度になっている。装着孔35の上下縁部には、それぞれ係止片42の先端部が係止可能な係止縁部36が内向きに張り出して形成されている。この係止縁部36の前面には、後方に向かうにつれて内側に張り出すように傾斜した案内面36Aが形成されている。また、装着孔35の内側には、左右方向に延びた平板状のガイド部37(案内手段)が上下一対設けられている。一対のガイド部37の間には、切断刃43の基端部がほぼ緊密に嵌合されるようになっている。
また、後側ケーシング30Bにおける取付凹部31の底面には、ヒューズ本体21の各溶断部15に対応する位置に左右方向に延びた逃がし溝38が前後に貫通して形成されており、切断治具40により溶断部15の切断可能部17A〜17Dを切断した際に、この逃がし溝38内に切断刃43の先端が逃がされるようになっている。
As shown in FIGS. 5 and 7, the front casing 30 </ b> A is provided with a jig holding part 34 to which a cutting jig 40 can be attached at the front position of each fusing part 15. The jig holding portion 34 includes a rectangular mounting hole 35 that is open to the accommodation recess 33, and the inner diameter of the mounting hole 35 is slightly larger than the outer shape of the base 41 of the cutting jig 40. Yes. At the upper and lower edge portions of the mounting hole 35, a locking edge portion 36 that can be locked with the tip end portion of the locking piece 42 is formed to project inward. On the front surface of the locking edge 36, a guide surface 36A that is inclined so as to project inward as it goes rearward is formed. A pair of upper and lower flat guide portions 37 (guide means) extending in the left-right direction are provided inside the mounting hole 35. A base end portion of the cutting blade 43 is fitted between the pair of guide portions 37 almost closely.
In addition, on the bottom surface of the mounting recess 31 in the rear casing 30B, a relief groove 38 extending in the left-right direction is formed at a position corresponding to each fusing portion 15 of the fuse body 21 so as to penetrate in the front-rear direction. When the cutable portions 17 </ b> A to 17 </ b> D of the fusing portion 15 are cut by 40, the tip of the cutting blade 43 is released into the escape groove 38.

上記ヒューズ20が使用される際には、使用される回路の仕様に応じて各溶断部15に設定されるヒューズ容量が選定される。そして、その選定されたヒューズ容量に対応する数値が表示された切断治具40が選ばれ、その溶断部15に対応する治具保持部34に装着される。なお、このとき、切断治具40にヒューズ容量に関する表示44があるため、作業者はどの切断可能部17A〜17Dを切断すれば所望のヒューズ容量になるかを意識することなく、必要な切断治具40を見つけ出すことができる。   When the fuse 20 is used, the fuse capacity set for each fusing part 15 is selected according to the specifications of the circuit used. Then, a cutting jig 40 on which a numerical value corresponding to the selected fuse capacity is displayed is selected and attached to the jig holding portion 34 corresponding to the fusing portion 15. At this time, since the cutting jig 40 has a display 44 relating to the fuse capacity, the operator can perform the necessary cutting treatment without being aware of which of the severable parts 17A to 17D is cut to obtain the desired fuse capacity. The tool 40 can be found out.

切断治具40は、図7に示すように、基部41の前面が押圧されることで、切断刃43の先端が上下のガイド部37間に差し込まれるようにして、装着孔35に押し込まれる。そして、切断刃43の先端が一部の切断可能部17A〜17Dに突き当たると、切断治具40のさらなる押し込みに伴って、その切断可能部17A〜17Dが破断される。このとき、切断刃43の基端部がガイド部37間にほぼ緊密に嵌合することで、切断刃43が傾くことなく真っ直ぐに押し込まれる(案内される)ため、切断可能部17A〜17Dの切断を円滑に行うことができる。   As shown in FIG. 7, the cutting jig 40 is pushed into the mounting hole 35 such that the tip of the cutting blade 43 is inserted between the upper and lower guide portions 37 when the front surface of the base 41 is pressed. And when the front-end | tip of the cutting blade 43 collides with some cut | disconnectable parts 17A-17D, in connection with the further pushing of the cutting jig 40, the cutable parts 17A-17D will be fractured | ruptured. At this time, since the base end portion of the cutting blade 43 is fitted almost tightly between the guide portions 37, the cutting blade 43 is pushed straight (guided) without being inclined, so that the cutable portions 17 </ b> A to 17 </ b> D are Cutting can be performed smoothly.

この間に、各係止片42の先端が係止縁部36に突き当たると、各係止片42が両案内面36A,42Aの案内によって互いに内側に撓み変形する。そして、切断治具40が正規の装着位置に至ると、図5,図9及び図10に示すように、基部41の後面がガイド部37の前面に突き当たって切断治具40の挿入が規制されるとともに、各係止片42が互いに外側に復元変形して、その先端が係止縁部36の後面側に係合する。これにより、切断刃43が分断された切断可能部17A〜17Dの端部間に入り込んだ状態で、切断治具40が保持される。このようにして、各治具保持部34に選定された切断治具40を装着することで、各溶断部15が所望の溶断特性(ヒューズ容量)に設定される。   During this time, when the leading end of each locking piece 42 abuts against the locking edge 36, each locking piece 42 is bent and deformed inward by the guidance of both guide surfaces 36A, 42A. When the cutting jig 40 reaches the proper mounting position, as shown in FIGS. 5, 9, and 10, the rear surface of the base portion 41 abuts against the front surface of the guide portion 37 and the insertion of the cutting jig 40 is restricted. At the same time, the respective locking pieces 42 are restored and deformed to the outside, and their tips engage with the rear surface side of the locking edge 36. Thereby, the cutting jig 40 is held in a state where the cutting blade 43 enters between the end portions of the cutable portions 17A to 17D. In this way, by attaching the selected cutting jig 40 to each jig holding part 34, each fusing part 15 is set to a desired fusing characteristic (fuse capacity).

以上のように本実施形態によれば、複数の切断可能部17A〜17Dのうちの一部を切断するように配置された切断刃43を備えた切断治具40によって、一部の切断可能部17A〜17Dを切断することで、ヒューズ20の溶断特性を容易に所望の値に設定することができる。   As described above, according to the present embodiment, some of the severable parts can be cut by the cutting jig 40 provided with the cutting blade 43 arranged to cut a part of the plurality of severable parts 17A to 17D. By cutting 17A to 17D, the fusing characteristic of the fuse 20 can be easily set to a desired value.

また、ガイド部37によって切断刃43による切断動作が案内されるため、切断可能部17A〜17Dの切断作業を円滑に行うことができる。   Moreover, since the cutting operation by the cutting blade 43 is guided by the guide portion 37, the cutting work of the cutable portions 17A to 17D can be performed smoothly.

また、絶縁性の切断刃43が切断可能部17A〜17Dを分断した状態で切断治具40が保持されるため、分断された切断可能部17A〜17Dの端部同士が確実に絶縁状態に保たれる。   In addition, since the cutting jig 40 is held in a state where the insulating cutting blade 43 divides the severable portions 17A to 17D, the ends of the severable severable portions 17A to 17D are reliably maintained in an insulated state. Be drunk.

また、切断治具40によって切断可能部17A〜17Dを切断した後に、切断治具40に設けられた表示44によって、溶断部15の溶断特性を容易に識別することができる。   In addition, after the cutable portions 17A to 17D are cut by the cutting jig 40, the fusing characteristics of the fusing portion 15 can be easily identified by the display 44 provided on the cutting jig 40.

<他の実施形態>
本発明は上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.

(1)上記各実施形態では、各切断可能部がスリットを介して幅方向に分離されているが、各切断可能部を分離せずに区切り位置に切断を容易とするための切り込み等を入れるようにしても良い。
(2)上記各実施形態では、溶断部を互いに溶断特性が異なる複数種類の切断可能部により構成したが、各切断可能部が互いに同じ溶断特性を持つように構成しても良い。
(3)溶断部は、例えば絶縁性の基材の上面に薄膜状に形成するようにしても良く、またその場合、切断可能部を切断する際に基材をともに切除するように構成しても良い。
(1) In each of the above embodiments, each severable part is separated in the width direction via a slit. However, a notch or the like for facilitating cutting is inserted at the separation position without separating each severable part. You may do it.
(2) In each of the above embodiments, the fusing part is configured by a plurality of types of cutable parts having different fusing characteristics. However, the fusing parts may be configured to have the same fusing characteristics.
(3) The fusing part may be formed, for example, in a thin film on the upper surface of an insulating base material, and in that case, the base material may be cut out together when the cuttable part is cut. Also good.

(4)上記第2実施形態では、切断治具の識別手段としてヒューズ容量の数値を表記したものを示したが、これに限らず、切断可能部の切断によって得られる溶断部の溶断特性を記号の表記で示したり、あるいは切断治具の色や形状などで示すようにしても良い。
(5)上記第2実施形態では、1個の切断治具により1つの溶断部が有する切断可能部を切断するものを示したが、本発明によれば、1個の切断治具で複数の溶断部が有する切断可能部を切断できるようにしても良い。
(6)溶断部を複数備えたヒューズにおいて、使用しない溶断部がある場合には、その溶断部の切断可能部を切断治具等により全て切断するように構成しても良い。
(7)溶断部の有する切断可能部を全て切断しない状態で使用する場合には、ヒューズに通常の切断治具に代えて切断刃を備えてない切断治具と同様の形状の部材を装着し、その部材にその溶断部に対応するヒューズ容量等の識別手段を設けるようにしても良い。
(4) In the second embodiment, the numerical value of the fuse capacity is shown as the discriminating means for the cutting jig. However, the present invention is not limited to this, and the fusing characteristics of the fusing part obtained by cutting the cuttable part are represented by symbols. Or may be indicated by the color or shape of the cutting jig.
(5) In the second embodiment, one cutting jig is used to cut the severable part of one fusing part. However, according to the present invention, a plurality of cutting parts can be formed using one cutting jig. You may enable it to cut | disconnect the cutable part which a fusing part has.
(6) In a fuse provided with a plurality of fusing parts, when there is a fusing part that is not used, all the cutable parts of the fusing part may be cut with a cutting jig or the like.
(7) When using the cutable part of the fusing part without cutting, attach a member of the same shape as the cutting jig without a cutting blade to the fuse instead of the normal cutting jig. The member may be provided with identification means such as a fuse capacity corresponding to the fused portion.

本発明の第1実施形態に係るヒューズの正面図1 is a front view of a fuse according to a first embodiment of the present invention. ヒューズの側面図Fuse side view ヒューズの部分拡大正面図Partial enlarged front view of fuse ヒューズの使用例を示す正面図Front view showing an example of fuse use 第2実施形態に係るヒューズの斜視図The perspective view of the fuse which concerns on 2nd Embodiment ヒューズの分解斜視図Exploded perspective view of fuse 切断治具を装着する前の状態のヒューズの部分拡大断面図Partial enlarged sectional view of the fuse in the state before mounting the cutting jig 切断治具の斜視図Perspective view of cutting jig 切断治具を装着した状態のヒューズの部分拡大断面図Partial enlarged sectional view of the fuse with the cutting jig attached 後側ケーシングを外した状態のヒューズの斜視図Perspective view of fuse with rear casing removed

符号の説明Explanation of symbols

10,20…ヒューズ
12,23…共通電極(電極部、折り返し電極部)
13,24…個別電極(電極部、短電極部)
15(15A〜15G)…溶断部
17A〜17D…切断可能部
34…治具保持部
37…ガイド部(案内手段)
40…切断治具
43…切断刃
44…表示(識別手段)
10, 20 ... fuses 12, 23 ... common electrode (electrode portion, folded electrode portion)
13, 24 ... Individual electrodes (electrode part, short electrode part)
15 (15A-15G) ... fusing part 17A-17D ... cutting possible part 34 ... jig holding part 37 ... guide part (guide means)
40 ... Cutting jig 43 ... Cutting blade 44 ... Display (identification means)

Claims (10)

複数の電極部と、前記電極部間に架設され過電流によって溶断する溶断部とを備えたヒューズであって、
前記溶断部は、平板状をなす導電性の板材からなるとともに、互いに並列に配されかつ選択的に切断可能な複数の切断可能部を備えており、
前記電極部は、平板状をなす導電性の板材からなるとともに、前記溶断部の板面に対し平行に配置されていることを特徴とするヒューズ。
A fuse comprising a plurality of electrode parts and a fusing part that is installed between the electrode parts and is fused by overcurrent,
The fusing part is made of a conductive plate material having a flat plate shape, and includes a plurality of severable parts arranged in parallel and selectively cut.
The said electrode part consists of an electroconductive board | plate material which makes flat form, and is arrange | positioned in parallel with respect to the plate | board surface of the said fusing part, The fuse characterized by the above-mentioned.
前記電極部は、前記溶断部の一端から延出した短電極部と、前記溶断部の他端から一端側へ折り返し状に延出し、かつその先端部が前記短電極部に並ぶように配置された折り返し電極部とを備えていることを特徴とする請求項1に記載のヒューズ。 The electrode portion is arranged such that a short electrode portion extending from one end of the fusing portion, a folded end shape extending from the other end of the fusing portion to one end side, and a tip portion thereof being aligned with the short electrode portion. The fuse according to claim 1, further comprising a folded electrode portion. 前記溶断部は、複数個が並列に配されており、前記短電極部は、前記複数の溶断部の一端側に各溶断部毎に個別に接続され、前記折り返し電極部は、前記複数の溶断部の他端側に共通に接続されていることを特徴とする請求項2に記載のヒューズ。 A plurality of the fusing parts are arranged in parallel, the short electrode part is individually connected to one end side of the fusing parts for each fusing part, and the folded electrode part is the plurality of fusing parts The fuse according to claim 2, wherein the fuse is commonly connected to the other end side of the portion. 前記電極部と前記溶断部とは、互いに異なる材質よりなることを特徴とする請求項1から請求項3のいずれかに記載のヒューズ。 The fuse according to any one of claims 1 to 3, wherein the electrode part and the fusing part are made of different materials. 前記溶断部は、互いに溶断特性が異なる複数種類の前記切断可能部を備えていることを特徴とする請求項1から請求項4のいずれかに記載のヒューズ。 The fuse according to any one of claims 1 to 4, wherein the fusing part includes a plurality of types of the cutable parts having different fusing characteristics. 前記複数種類の切断可能部は、厚さ寸法が互いに等しく、かつ幅寸法が互いに異なるように構成されていることを特徴とする請求項5に記載のヒューズ。 6. The fuse according to claim 5, wherein the plurality of types of cutable portions are configured to have the same thickness dimension and different width dimensions. 前記溶断部が有する複数の切断可能部のうち一部の切断可能部を切断可能に配置された切断刃を有する切断治具と、
前記切断治具を保持可能な治具保持部とを備えていることを特徴とする請求項1から請求項6のいずれかに記載のヒューズ。
A cutting jig having a cutting blade arranged so as to be able to cut a part of the severable part among the plurality of severable parts of the fusing part;
The fuse according to any one of claims 1 to 6, further comprising a jig holding portion capable of holding the cutting jig.
前記切断刃による前記一部の切断可能部に対する切断動作を案内する案内手段を備えていることを特徴とする請求項7に記載のヒューズ。 The fuse according to claim 7, further comprising guide means for guiding a cutting operation of the part of the cutable portion by the cutting blade. 前記切断刃は絶縁性を有しており、前記治具保持部は、前記切断刃が前記一部の切断可能部を分断した状態で、前記切断治具を保持することを特徴とする請求項7または請求項8に記載のヒューズ。 The said cutting blade has insulation, The said jig holding part hold | maintains the said cutting jig in the state which the said cutting blade divided | segmented the said one part cut | disconnectable part. The fuse according to claim 7 or claim 8. 前記切断治具は、前記一部の切断可能部を切断することにより得られる前記溶断部の溶断特性を識別させるための識別手段を備えていることを特徴とする請求項7から請求項9のいずれかに記載のヒューズ。 The said cutting jig | tool is provided with the identification means for identifying the fusing characteristic of the said fusing part obtained by cut | disconnecting the said one part cut | disconnectable part, The Claims 9-9 characterized by the above-mentioned. A fuse according to any one.
JP2005244447A 2005-08-25 2005-08-25 fuse Expired - Fee Related JP4732836B2 (en)

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