JP7353654B2 - Vertical fuses and vertical fuse devices - Google Patents
Vertical fuses and vertical fuse devices Download PDFInfo
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- JP7353654B2 JP7353654B2 JP2020535892A JP2020535892A JP7353654B2 JP 7353654 B2 JP7353654 B2 JP 7353654B2 JP 2020535892 A JP2020535892 A JP 2020535892A JP 2020535892 A JP2020535892 A JP 2020535892A JP 7353654 B2 JP7353654 B2 JP 7353654B2
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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
- H01H85/147—Parallel-side contacts
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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
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
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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
- H01H85/48—Protective devices wherein the fuse is carried or held directly by the base
- H01H85/50—Protective devices wherein the fuse is carried or held directly by the base the fuse having contacts at opposite ends for co-operation with the base
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Description
本発明は、回路基板の基板面に対して縦置きに実装される縦置きヒューズ及び縦置きヒューズ装置に関するものである。 The present invention relates to a vertical fuse and a vertical fuse device that are mounted vertically on the board surface of a circuit board.
実開昭５８－１６９６４６号公報（特許文献１）及び実開平３－６３９０７号公報（特許文献２）には、円柱状のヒューズ素子（または溶断形抵抗素子）と、ヒューズ素子（または溶断形抵抗素子）の一端に嵌合固定された第１のキャップ状電極と、ヒューズ素子（または溶断形抵抗素子）の他端に嵌合固定された第２のキャップ状電極と、第１のキャップ状電極の開口部側端部に一端が接続されヒューズ素子から該ヒューズ素子と交差する方向に延びる第１の部分と、該第１の部分と一体に設けられてヒューズ素子との間に間隔をあけた状態でヒューズ素子（または溶断形抵抗素子）に沿い第２のキャップ状電極を越える位置まで延びる第２の部分と該第２の部分の先端に設けられた第１の半田付け端子部を備えた第１のリード端子と、第２のキャップ状電極に一体に設けられて第２のキャップ状電極の外側端部から第２のキャップ状電極から離れる方向に延びる第２の半田付け端子部を備えた従来の縦置きヒューズの従来例が開示されている。 Utility Model Application Publication No. 58-169646 (Patent Document 1) and Utility Model Application Publication No. 3-63907 (Patent Document 2) disclose a cylindrical fuse element (or blow-out type resistance element) and a fuse element (or blow-out type resistance element). a first cap-shaped electrode fitted and fixed to one end of the fuse element (or fuse element), a second cap-shaped electrode fitted and fixed to the other end of the fuse element (or fusing type resistance element), and the first cap-shaped electrode a first portion having one end connected to the opening side end thereof and extending from the fuse element in a direction crossing the fuse element; and a first portion provided integrally with the first portion with a space between the fuse element and the fuse element. a second portion extending along the fuse element (or blow-out type resistance element) to a position beyond the second cap-shaped electrode; and a first soldering terminal portion provided at the tip of the second portion. The first lead terminal includes a second soldering terminal portion that is integrally provided with the second cap-shaped electrode and extends from the outer end of the second cap-shaped electrode in a direction away from the second cap-shaped electrode. A conventional example of a conventional vertical fuse is disclosed.
また実開昭６０－４１７４２号公報（特許文献３）には、第２のキャップ状電極が回路基板の電極に直接半田付けされる従来の縦置きヒューズが開示されている。 Furthermore, Japanese Utility Model Application Publication No. 60-41742 (Patent Document 3) discloses a conventional vertical fuse in which a second cap-shaped electrode is directly soldered to an electrode of a circuit board.
さらに特公昭５０－３４２１５号公報（特許文献４）には、ヒューズ素子を縦置きに内装してヒューズ素子を縦置きで回路基板に実装することを可能にするヒューズホルダを備えた縦置きヒューズ装置の従来例が開示されている。 Furthermore, Japanese Patent Publication No. 50-34215 (Patent Document 4) discloses a vertical fuse device equipped with a fuse holder that allows the fuse element to be mounted vertically on a circuit board. A conventional example is disclosed.
従来の構造では、第１のリード端子または第２のリード端子が傾くと、第１のリード端子と第２のキャップ状電極との間の絶縁距離が短くなる問題が発生する。また実装前にリード端子が変形すると、ヒューズ素子が回路基板に対して大きく傾斜したり、実装または組立の自動化が難しくなる問題があった。さらに第１のリード端子または第２のリード端子が傾いて、第２のキャップ状電極が回路基板に接触するか、または近接した状態になると、高密度実装が難しくなる問題があった。また従来の構造では、縦置きのヒューズをヒューズホルダに装着する場合、ヒューズの端子部を、そのまま半田付け用端子部として利用できない問題があった。 In the conventional structure, when the first lead terminal or the second lead terminal is tilted, a problem arises in that the insulation distance between the first lead terminal and the second cap- shaped electrode becomes short. Further, if the lead terminal is deformed before mounting, there is a problem that the fuse element may be tilted significantly with respect to the circuit board, and automation of mounting or assembly becomes difficult. Furthermore, if the first lead terminal or the second lead terminal is tilted and the second cap-shaped electrode comes into contact with or is in close proximity to the circuit board, there is a problem that high-density mounting becomes difficult. Further, in the conventional structure, when a vertically placed fuse is mounted in a fuse holder, there is a problem that the terminal portion of the fuse cannot be directly used as a soldering terminal portion.
本発明の目的は、上記課題を解決することができる縦置きヒューズ装置及び縦置きヒューズ装置に用いる縦置きヒューズを提供することにある。 An object of the present invention is to provide a vertically installed fuse device and a vertically installed fuse for use in the vertically installed fuse device, which can solve the above problems.
本発明の縦置きヒューズ装置は、長手方向に延びる仮想中心線を有する円柱状のヒューズ素子と、ヒューズ素子の一端に嵌合固定された第１のキャップ状電極と、ヒューズ素子の他端に嵌合固定された第２のキャップ状電極と、第１のリード端子と第２のリード端子とからなる縦置きヒューズと、絶縁部材を備えている。第１のリード端子は、第１のキャップ状電極の開口部側端部に一端が接続されヒューズ素子の仮想中心線と交差し且つ該ヒューズ素子から離れる方向に延びる第１の部分と、該第１の部分と一体に設けられてヒューズ素子との間に間隔をあけた状態でヒューズ素子の仮想中心線に沿い、第２のキャップ状電極を越える位置まで延びる第２の部分と、該第２の部分の先端に設けられた第１の半田付け端子部を備えている。また第２のリード端子は、第２のキャップ状電極の開口部側端部に一端が接続されヒューズ素子の仮想中心線と交差し且つ第１のリード端子と緩衝しない方向に延びる第１の部分と、該第１の部分と一体に設けられて第２のキャップ状電極との間に間隔をあけた状態で第２のキャップ状電極を越える位置まで延びる第２の部分と、該第２の部分の先端に設けられた第２の半田付け端子部を備えている。そして絶縁部材は、少なくとも第１のリード端子の第２の部分と第２のキャップ状電極の間に位置して、第２の部分と第２のキャップ状電極の電気的な絶縁を図る第１の絶縁部及び、第２のキャップ状電極と第２のリード端子の第２の部分との間に位置して、第２のリード端子の第２の部分と第２のキャップ状電極との間の間隔寸法の維持を図る第２の絶縁部を有する。 The vertical fuse device of the present invention includes a cylindrical fuse element having a virtual center line extending in the longitudinal direction, a first cap-shaped electrode fitted and fixed to one end of the fuse element, and a first cap-shaped electrode fitted and fixed to the other end of the fuse element. It includes a second cap-shaped electrode fixed together, a vertically placed fuse consisting of a first lead terminal and a second lead terminal, and an insulating member. The first lead terminal includes a first portion that has one end connected to the opening side end of the first cap-shaped electrode, intersects with the virtual center line of the fuse element, and extends in a direction away from the fuse element; a second part that is provided integrally with the first part and extends along the virtual center line of the fuse element with a space between the second part and the second part, to a position beyond the second cap-shaped electrode; A first soldering terminal portion is provided at the tip of the portion. The second lead terminal has a first end connected to the opening side end of the second cap-shaped electrode and extends in a direction that intersects with the virtual center line of the fuse element and does not interfere with the first lead terminal. and a second portion that is provided integrally with the first portion and extends to a position beyond the second cap-like electrode with a gap between the second portion and the second cap-like electrode; A second soldering terminal portion is provided at the tip of the portion. The insulating member is located between at least the second portion of the first lead terminal and the second cap-shaped electrode to electrically insulate the second portion and the second cap-shaped electrode. and an insulating portion located between the second cap-shaped electrode and the second portion of the second lead terminal, and between the second portion of the second lead terminal and the second cap-shaped electrode. It has a second insulating part that maintains the interval dimension.
本発明の縦置きヒューズ装置のように、第１の絶縁部と第２の絶縁部を有する絶縁部材を用いると、縦置きヒューズを縦置きした場合でも、第１のリード端子及び第２のリード端子に対して、第１の絶縁部と第２の絶縁部の存在がスペーサとして機能するとともに、リード端子の支持部材としての機能を発揮する。その結果、第１のリード端子及び第２のリード端子が不必要に傾くことを阻止することができる。その結果、縦置きヒューズ装置が回路基板に対して大きく傾斜することがなく、実装または組立の自動化が可能になる。また第１のリード端子または第２のリード端子が傾いて、第２のキャップ状電極が回路基板に接触したり、近接した状態になることを阻止することができるので、高密度実装が可能になる。さらに第１の絶縁部を設けたので、第１のリード端子と第２のキャップ状電極との間の絶縁距離が短くなる問題が発生することがない。特に、ヒューズを流れる電流が、５０Ａ以上のように大きい場合において、第１のリード端子と前記第２のキャップ状電極との間の絶縁耐力を高めることができる。 When an insulating member having a first insulating part and a second insulating part is used as in the vertical fuse device of the present invention, even when a vertical fuse is placed vertically, the first lead terminal and the second lead terminal The presence of the first insulating part and the second insulating part functions as a spacer with respect to the terminal, and also functions as a support member for the lead terminal. As a result, it is possible to prevent the first lead terminal and the second lead terminal from tilting unnecessarily. As a result, the vertical fuse device does not tilt significantly with respect to the circuit board, and automation of mounting or assembly becomes possible. In addition, it is possible to prevent the second cap-shaped electrode from touching or coming close to the circuit board due to the tilting of the first lead terminal or the second lead terminal, which enables high-density mounting. Become. Furthermore, since the first insulating portion is provided, the problem of shortening the insulation distance between the first lead terminal and the second cap- shaped electrode does not occur. In particular, when the current flowing through the fuse is large, such as 50 A or more, the dielectric strength between the first lead terminal and the second cap-shaped electrode can be increased.
第１のリード端子と第１のキャップ状電極が一体に形成されており、第２のリード端子と第２のキャップ状電極が一体に形成されていてもよい。このような構造を採用すると、部品点数が減る上、組み立てが容易になる。また第１のリード端子の第１の部分及び第２の部分は、第１のキャップ状電極の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有していてもよい。また第２のリード端子の第１の部分及び第２の部分も、第２のキャップ状電極の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有していてもよい。このようにすると、第１及び第２のリード端子の幅寸法が大きいため、縦置きヒューズ装置を回路基板上に縦置きで実装する場合に、第１及び第２のリード端子の変形を確実に阻止することができる。その結果、回路基板に実装した縦置ヒューズ装置が不必要に傾倒することを防止することができる。また、絶縁部材と縦置きヒューズを組み合わせる場合において、第１及び第２のリード端子が変形し難いため、絶縁部材と縦置きヒューズとの組み合わせを自動化することも可能になる。さらに、絶縁部材と縦置きヒューズとを組み合わせる場合において、絶縁部材側に端子を設けることなしに、第１及び第２のリード端子を用いて回路基板への半田付けを行うのに十分な機械的強度を確保することができる。なお第１のリード端子の第２の部分の中央部には、長手方向に沿って延びるリブが一体に形成されていてもよい。このようにすると長さの長い第１のリード端子の機械的強度を高めることができる。 The first lead terminal and the first cap-shaped electrode may be integrally formed, and the second lead terminal and the second cap-shaped electrode may be integrally formed. Adopting such a structure reduces the number of parts and facilitates assembly. Further, the first portion and the second portion of the first lead terminal may have a width close to or greater than the maximum diameter of the first cap-shaped electrode. Further, the first portion and the second portion of the second lead terminal may also have a width close to or greater than the maximum diameter of the second cap-shaped electrode. In this way, since the width dimensions of the first and second lead terminals are large, when the vertical fuse device is mounted vertically on a circuit board, deformation of the first and second lead terminals can be ensured. can be prevented. As a result, it is possible to prevent the vertical fuse device mounted on the circuit board from tilting unnecessarily. Further, when the insulating member and the vertical fuse are combined, since the first and second lead terminals are difficult to deform, it is also possible to automate the combination of the insulating member and the vertical fuse. Furthermore, when combining an insulating member and a vertical fuse, the mechanical strength is sufficient to enable soldering to a circuit board using the first and second lead terminals without providing a terminal on the insulating member side. Strength can be ensured. Note that a rib extending along the longitudinal direction may be integrally formed in the center of the second portion of the first lead terminal. In this way, the mechanical strength of the long first lead terminal can be increased.
絶縁部材は、第１の絶縁部と第２の絶縁部を一体に備えた絶縁成形品によって構成されているのが好ましい。このような絶縁成形品であれば、第１のリード端子と第２のリード端子と絶縁部材との組み立てが容易にになる。絶縁成形品は、第２のキャップ状電極が嵌合される電極被嵌合部が、第１の絶縁部と第２の絶縁部の間に位置しており、第１の絶縁部、電極被嵌合部及び第２の絶縁部が一体に成形された樹脂成形品のヒューズホルダによって構成されていてもよい。このようなヒューズホルダを用いると、ヒューズの姿勢を確実に保持することができる。また第２のキャップ状電極と実装用の回路基板との間にヒューズホルダの一部が存在するため、第２のキャップ状電極と回路基板上の電極との短絡を防止することができる。なお電極被嵌合部は、有底であるのが好ましい。電極被嵌合部が有底であれば、実装用の回路基板との間の絶縁性を最も高めることができ、部品の実装密度を高めることができる。 It is preferable that the insulating member is constituted by an insulating molded product that integrally includes a first insulating part and a second insulating part. With such an insulating molded product, it becomes easy to assemble the first lead terminal, the second lead terminal, and the insulating member. In the insulating molded product, the electrode fitting part into which the second cap-shaped electrode is fitted is located between the first insulating part and the second insulating part, and the first insulating part and the electrode covering part are located between the first insulating part and the second insulating part. The fuse holder may be a resin molded product in which the fitting portion and the second insulating portion are integrally molded. When such a fuse holder is used, the posture of the fuse can be maintained reliably. Furthermore, since a portion of the fuse holder exists between the second cap -shaped electrode and the circuit board for mounting, it is possible to prevent a short circuit between the second cap -shaped electrode and the electrode on the circuit board. Note that the electrode fitting portion preferably has a bottom. If the electrode fitting portion has a bottom, the insulation between it and the circuit board for mounting can be maximized, and the mounting density of the components can be increased.
第１の絶縁部は第１のリード端子の第２の部分とヒューズ素子との間に位置して第１のリード端子の第２の部分に向かって延びる絶縁延長部を一体に備えているのが好ましい。このようにすると絶縁延長部が第１のリード端子とヒューズ素子との間の絶縁耐力を高める機能を果たす。理想的には、絶縁延長部は第１のリード端子の第１の部分の近くまで延びているのが好ましい。しかしながら絶縁延長部の長さの設定は、ヒューズ素子に印加される電圧に応じて任意に定めればよい。 The first insulating portion integrally includes an insulating extension located between the second portion of the first lead terminal and the fuse element and extending toward the second portion of the first lead terminal. is preferred. In this way, the insulating extension functions to increase the dielectric strength between the first lead terminal and the fuse element. Ideally, the insulating extension extends proximate the first portion of the first lead terminal. However, the length of the insulating extension may be arbitrarily determined depending on the voltage applied to the fuse element.
絶縁延長部には、第１のリード端子の第２の部分の少なくとも一部が入り且つ第１の半田付け端子部が貫通する貫通孔が形成されていてもよい。このような構造にすると第１のリード端子の曲がりを確実に防止できるうえ、周辺部品と第１のリード端子との間の電気的な絶縁を図ることができる。 A through hole may be formed in the insulating extension portion, into which at least a portion of the second portion of the first lead terminal enters and through which the first soldering terminal portion passes. With such a structure, bending of the first lead terminal can be reliably prevented, and electrical insulation between peripheral components and the first lead terminal can be achieved.
第２のリード端子が、第１のリード端子と第２のキャップ状電極を間にして対向する位置に配置されている場合には、絶縁延長部は、ヒューズ素子を間に挟むようにヒューズ素子の外周面に沿い且つ第２のリード端子が位置する側に延びる一対の追加絶縁延長部を一体に備えているのが好ましい。このような一対の追加絶縁延長部を設けると、ヒューズ素子及び第２のキャップ状電極の周囲の電気的な絶縁を更に確実なものとすることができる。 When the second lead terminals are disposed at positions facing each other with the first lead terminal and the second cap-shaped electrode in between, the insulating extension portion is arranged so as to sandwich the fuse element between the first lead terminal and the second cap-shaped electrode. It is preferable to integrally include a pair of additional insulating extensions extending along the outer circumferential surface of and toward the side where the second lead terminal is located. Providing such a pair of additional insulating extensions can further ensure electrical insulation around the fuse element and the second cap-like electrode.
本発明の縦置きヒューズ装置に使用するのに適した縦置きヒューズは、長手方向に延びる仮想中心線を有する円柱状のヒューズ素子と、ヒューズ素子の一端に嵌合固定された第１のキャップ状電極と、ヒューズ素子の他端に嵌合固定された第２のキャップ状電極と、第１のキャップ状電極の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有して、第１のキャップ状電極の開口部側端部に一端が接続されヒューズ素子の仮想中心線と交差し且つ該ヒューズ素子から離れる方向に延びる第１の部分と、該第１の部分と一体に設けられてヒューズ素子との間に間隔をあけた状態でヒューズ素子の仮想中心線に沿い、第２のキャップ状電極を越える位置まで延びる第２の部分と、該第２の部分の先端に設けられた第１の半田付け端子部を備えた第１のリード端子と、第２のキャップ状電極の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有して、第２のキャップ状電極の開口部側端部に一端が接続されヒューズ素子の仮想中心線と交差し且つ第１のリード端子と緩衝しない方向に延びる第１の部分と、該第１の部分と一体に設けられて第２のキャップ状電極との間に間隔をあけた状態で前記第２のキャップ状電極を越える位置まで延びる第２の部分と該第２の部分の先端に設けられた第２の半田付け端子部を備えた第２のリード端子とを備えている。 A vertical fuse suitable for use in the vertical fuse device of the present invention includes a cylindrical fuse element having a virtual centerline extending in the longitudinal direction, and a first cap-shaped fuse element that is fitted and fixed to one end of the fuse element. a second cap-shaped electrode fitted and fixed to the other end of the fuse element; a first portion having one end connected to the opening side end of the cap-shaped electrode, intersecting the virtual center line of the fuse element and extending in a direction away from the fuse element; and a fuse provided integrally with the first portion. a second portion extending along the virtual center line of the fuse element to a position beyond the second cap-shaped electrode with a space between the second portion and the first portion provided at the tip of the second portion; a first lead terminal having a soldering terminal portion, and a width dimension close to or greater than the maximum diameter dimension of the second cap-shaped electrode, and a second cap-shaped electrode opening side; a first portion having one end connected to the end portion and extending in a direction that intersects the virtual center line of the fuse element and does not buffer the first lead terminal; and a second cap-shaped portion provided integrally with the first portion. a second portion extending beyond the second cap-shaped electrode with a gap between the second portion and the second cap-shaped electrode; and a second soldering terminal provided at the tip of the second portion. It is equipped with two lead terminals.
縦置きヒューズは、第１の半田付け端子部及び第２の半田付け端子部は、回路基板に半田付けされた状態で、第２のキャップ状電極と回路基板の表面との間に回路間の短絡を防止できる間隙を形成できるように形状が定められているのが好ましい。 In the vertical fuse, the first soldering terminal part and the second soldering terminal part are soldered to the circuit board, and the second cap-shaped electrode and the surface of the circuit board are connected between the circuits. Preferably, the shape is such that a gap can be formed to prevent short circuits.
また縦置きヒューズは、第１のリード端子の第２の部分が、電気絶縁性能を有するチューブ状電気絶縁材料により覆われていてもよい。この構造では、電気絶縁材料の実装が容易である。 Further, in the vertical fuse, the second portion of the first lead terminal may be covered with a tubular electrically insulating material having electrically insulating performance. This structure allows easy implementation of electrically insulating materials.
以下図面を参照して本発明の縦置きヒューズの実施の形態を用いた本発明の縦置きヒューズ及び縦置きヒューズ装置の実施の形態について説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a vertical fuse and a vertical fuse device of the present invention using embodiments of a vertical fuse of the present invention will be described below with reference to the drawings.
図１（Ａ）は、本発明の縦置きヒューズ装置に用いる第１の実施の形態の縦置きヒューズ３の斜視図を示しており、図１（Ｂ）は縦置きヒューズ３の右側面図を示しており、図１（Ｃ）は縦置きヒューズ３の平面図を示している。縦置きヒューズ３は、長手方向に延びる仮想中心線ＰＬを有する円柱状のヒューズ素子３１と、ヒューズ素子３１の一端に嵌合固定された第１のキャップ状電極３２と、ヒューズ素子３１の他端に嵌合固定された第２のキャップ状電極３３と、第１のリード端子３４と第２のリード端子３５とを備えている。 FIG. 1(A) shows a perspective view of a vertical fuse 3 according to the first embodiment used in the vertical fuse device of the present invention, and FIG. 1(B) shows a right side view of the vertical fuse 3. FIG. 1C shows a plan view of the vertically placed fuse 3. The vertical fuse 3 includes a cylindrical fuse element 31 having a virtual center line PL extending in the longitudinal direction, a first cap-shaped electrode 32 fitted and fixed to one end of the fuse element 31, and the other end of the fuse element 31. A second cap-shaped electrode 33, a first lead terminal 34, and a second lead terminal 35 are provided.
第１のリード端子３４は、第１の部分３４Ａと、第２の部分３４Ｂと第１の半田付け端子部分３４Ｃとを備えている。第１の部分３４Ａは、第１のキャップ状電極３２の最大直径寸法に近い又は最大直径寸法以上の幅寸法Ｗを有して、第１のキャップ状電極３２の開口部側端部３２Ａに一端が接続されヒューズ素子３１から該ヒューズ素子３１の仮想中心線ＰＬと交差し且つ該ヒューズ素子から離れると交差する方向に延びている。第２の部分３４Ｂは、第１の部分３４Ａと一体に設けられてヒューズ素子３１との間に間隔をあけた状態でヒューズ素子３１に沿い第２のキャップ状電極３３を越える位置まで延びている。そして第１の半田付け端子部３４Ｃは、第２の部分３４Ｂの先端に設けられている。本実施の形態では、回路基板に設けた実装用スルーホールに挿入される２つの突出部３４Ｄを一体に備えている。２つの突出部３４Ｄは、幅方向に間隔をあけて設けられている。本実施の形態では、第１のキャップ状電極３２と第１のリード端子３４は、プレス加工により、一体に成形されている。 The first lead terminal 34 includes a first portion 34A, a second portion 34B, and a first soldering terminal portion 34C. The first portion 34A has a width W close to or greater than the maximum diameter of the first cap-shaped electrode 32, and has one end at the opening side end 32A of the first cap-shaped electrode 32. is connected and extends from the fuse element 31 in a direction that intersects the virtual center line PL of the fuse element 31 and intersects it when separated from the fuse element. The second portion 34B is provided integrally with the first portion 34A and extends along the fuse element 31 to a position beyond the second cap-shaped electrode 33 with a gap between the second portion 34B and the first portion 34A. . The first soldering terminal portion 34C is provided at the tip of the second portion 34B. In this embodiment, two protrusions 34D are integrally provided to be inserted into mounting through holes provided in the circuit board. The two protrusions 34D are provided at intervals in the width direction. In this embodiment, the first cap-shaped electrode 32 and the first lead terminal 34 are integrally formed by press working.
また第２のリード端子３５も第１の部分３５Ａと、第２の部３５Ｂと第２の半田付け端子部分３４Ｃとを備えている。第２のリード端子３５の第１の部分３５Ａは、第２のキャップ状電極３３の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有して、第２のキャップ状電極３３の開口部側端部３３Ａに一端が接続され、ヒューズ素子３１から該ヒューズ素子３１と交差し且つ第１のリード端子３４と緩衝しない方向に延びている。また第２の部分３５Ｂは、第１の部分３５Ａと一体に設けられて第２のキャップ状電極３３との間に間隔をあけた状態で第２のキャップ状電極３３を越える位置まで延びている。そして第２の半田付け端子部３５Ｃは、第２の部分３５Ｂの先端に設けられている。本実施の形態では、回路基板に設けた実装用スルーホールに挿入される２つの突出部３５Ｄを一体に備えている。２つの突出部３５Ｄは、幅方向に間隔をあけて設けられている。本実施の形態では、第２のキャップ状電極３３と第２のリード端子３５は、プレス加工により、一体に成形されている。 The second lead terminal 35 also includes a first portion 35A, a second portion 35B, and a second soldering terminal portion 34C. The first portion 35A of the second lead terminal 35 has a width close to or greater than the maximum diameter of the second cap-shaped electrode 33, and the opening of the second cap-shaped electrode 33 One end is connected to the side end portion 33A, and extends from the fuse element 31 in a direction that intersects with the fuse element 31 and does not interfere with the first lead terminal 34. Further, the second portion 35B is provided integrally with the first portion 35A and extends to a position beyond the second cap-shaped electrode 33 with a gap between the second portion 35B and the second cap-shaped electrode 33. . The second soldering terminal portion 35C is provided at the tip of the second portion 35B. In this embodiment, two protrusions 35D are integrally provided to be inserted into mounting through holes provided in the circuit board. The two protrusions 35D are provided at intervals in the width direction. In this embodiment, the second cap-shaped electrode 33 and the second lead terminal 35 are integrally formed by press working.
本実施の形態では、第１のリード端子３４と第２のリード端子３５とは、ヒューズ素子３１を間にして対向する位置に配置されている。その結果、回路基板上を縦置きヒューズ３が占有する占有面積を小さくすることができる。 In this embodiment, the first lead terminal 34 and the second lead terminal 35 are arranged at opposing positions with the fuse element 31 in between. As a result, the area occupied by the vertical fuse 3 on the circuit board can be reduced.
また本実施の形態では、第１の半田付け端子部３４Ｃ及び第２の半田付け端子部３５Ｃは、図示しない回路基板に半田付けされた状態で、第２のキャップ状電極３３と回路基板の表面上の回路パターンまたは電極パターンとの間に、回路間の短絡を防止できる間隙を形成できるように形状が定められている。したがって本実施の形態の縦置きヒューズを用いると、回路基板上の部品の高密度実装が可能になる。 Further, in this embodiment, the first soldering terminal portion 34C and the second soldering terminal portion 35C are soldered to a circuit board (not shown), and the second cap-shaped electrode 33 and the surface of the circuit board are connected to each other. The shape is determined so that a gap can be formed between the upper circuit pattern or the electrode pattern to prevent short circuits between the circuits. Therefore, by using the vertical fuse of this embodiment, high-density mounting of components on a circuit board becomes possible.
本実施の形態の縦置きヒューズ３によれば、第１及び第２のリード端子３４及び３５の幅寸法Ｗが大きいため、ヒューズ素子３１を回路基板上に縦置きで実装する場合でも、第１及び第２のリード端子３４及び３５の変形を防止することができる。その結果、回路基板に実装した縦置きヒューズ３が不要に傾倒することを防止することができる。 According to the vertical fuse 3 of this embodiment, since the width dimension W of the first and second lead terminals 34 and 35 is large, even when the fuse element 31 is mounted vertically on a circuit board, the first And deformation of the second lead terminals 34 and 35 can be prevented. As a result, it is possible to prevent the vertical fuse 3 mounted on the circuit board from tilting unnecessarily.
図２（Ａ）は、図１に示した縦置きヒューズ３を用いた本発明の第１の実施の形態の縦置きヒューズ装置１０の斜視図を示しており、図２（Ｂ）乃至（Ｆ）は第１の実施の形態の右側面図、背面図、正面図、平面図及びＡ－Ａ線断面図を示している。本発明の第１の実施の形態の縦置きヒューズ装置１０は、絶縁部材としてヒューズホルダ７を用いている。 FIG. 2(A) shows a perspective view of the vertical fuse device 10 according to the first embodiment of the present invention using the vertical fuse 3 shown in FIG. ) shows a right side view, a rear view, a front view, a plan view, and a sectional view taken along the line AA of the first embodiment. The vertical fuse device 10 according to the first embodiment of the present invention uses the fuse holder 7 as an insulating member.
絶縁部材としてのヒューズホルダ７は、電気絶縁特性を有する樹脂で一体に成形された樹脂成形品である。ヒューズホルダ７は、少なくとも第１のリード端子３４の第２の部分３４Ｂと第２のキャップ状電極３３の間に位置して、第２の部分３４Ｂと第２のキャップ状電極３３の電気的な絶縁を図る第１の絶縁部７１、第２のキャップ状電極３３と第２のリード端子３５の第２の部分３５Ｂとの間に位置して、第２のリード端子３５の第２の部分３５Ｂと第２のキャップ状電極３３との間の間隔寸法の維持を図る第２の絶縁部７２、及び第１の絶縁部７１と第２の絶縁部７２の間に位置して第２のキャップ状電極３３が嵌合される電極被嵌合部７３を有している。第１の絶縁部７１と、電極被嵌合部７３と第２の絶縁部７２は、直線状に並んでいる。 The fuse holder 7 as an insulating member is a resin molded product integrally molded with a resin having electrical insulation properties. The fuse holder 7 is located between at least the second portion 34B of the first lead terminal 34 and the second cap-shaped electrode 33, and is electrically connected to the second portion 34B and the second cap-shaped electrode 33. A first insulating part 71 for insulation, a second part 35B of the second lead terminal 35 located between the second cap-shaped electrode 33 and the second part 35B of the second lead terminal 35. and the second cap-shaped electrode 33, and a second cap-shaped electrode located between the first insulating part 71 and the second insulating part 72. It has an electrode fitting part 73 into which the electrode 33 is fitted. The first insulating part 71, the electrode fitting part 73, and the second insulating part 72 are arranged in a straight line.
電極被嵌合部７３は、有底の円柱状の孔である。第２のキャップ状電極３３が電極被嵌合部７３に嵌合された状態において、第１のリード端子３４の第２の部分３４Ｂは、第１の絶縁部７１の端面７１Ａに沿って配置された状態になっており、第２のリード端子３５の第２の部分３５Ｂは第２の絶縁部７２の端面７２Ａに沿って配置された状態になっている。 The electrode fitting portion 73 is a cylindrical hole with a bottom. In a state where the second cap-shaped electrode 33 is fitted into the electrode fitting portion 73, the second portion 34B of the first lead terminal 34 is arranged along the end surface 71A of the first insulating portion 71. The second portion 35B of the second lead terminal 35 is disposed along the end surface 72A of the second insulating portion 72.
本実施の形態の縦置きヒューズ装置１０のように、第１の絶縁部７１と第２の絶縁部７２と電極被嵌合部得７３を有する絶縁部材としてのヒューズホルダ７を用いると、ヒューズ素子３１を縦置きした場合でも、第１のリード端子３４及び第２のリード端子３５に対して、第１の絶縁部７１と第２の絶縁部７２の存在がスペーサとして機能するとともに、第１のリード端子３４の第２の部分３４Ｂ及び第２のリード端子３５の第２の部分３５Ｂの支持部材としての機能を発揮する。その結果、第１のリード端子３４及び第２のリード端子３５が不必要に傾くことを阻止することができる。その結果、ヒューズ素子３１が回路基板に対して大きく傾斜することがなく、実装または組立の自動化が可能になる。また第１のリード端子３４または第２のリード端子３５が傾いて、第２のキャップ状電極３３が回路基板に接触したり、近接した状態になることを阻止することができるので、高密度実装が可能になる。さらに第１の絶縁部７１を設けたので、第１のリード端子３４と第２のキャップ状電極３３との間の絶縁距離が短くなる問題が発生することがない。 When the fuse holder 7 as an insulating member having the first insulating part 71, the second insulating part 72, and the electrode fitting part 73 is used like the vertical fuse device 10 of this embodiment, the fuse element 31 is placed vertically, the first insulating part 71 and the second insulating part 72 function as spacers for the first lead terminal 34 and the second lead terminal 35, and also serve as spacers for the first lead terminal 34 and the second lead terminal 35. It functions as a support member for the second portion 34B of the lead terminal 34 and the second portion 35B of the second lead terminal 35. As a result, it is possible to prevent the first lead terminal 34 and the second lead terminal 35 from tilting unnecessarily. As a result, the fuse element 31 does not tilt significantly with respect to the circuit board, and automation of mounting or assembly becomes possible. In addition, since the first lead terminal 34 or the second lead terminal 35 is tilted and the second cap-shaped electrode 33 is prevented from contacting or coming close to the circuit board, high-density mounting is possible. becomes possible. Furthermore, since the first insulating portion 71 is provided, the problem of shortening the insulation distance between the first lead terminal 34 and the second cap- shaped electrode 33 does not occur .
図３（Ａ）は、本発明の第２の実施の形態の縦置きヒューズ装置１００の斜視図を示しており、図３（Ｂ）乃至（Ｄ）は第２の実施の形態の右側面図、正面図及び平面図を示している。この縦置きヒューズ装置１００は、絶縁部材としてヒューズホルダを用いている点で第１の実施の形態の縦置きヒューズ装置と基本構成は同様であるが、ヒューズホルダ９の構造が異なる。また縦置きヒューズ３の構造は第１の実施の形態の縦置きヒューズ３と同じであるため、図１に付した符号を図３に付すことにより、説明を省略する。ヒューズホルダ９は、電気絶縁特性を有する樹脂で一体に成形されている。ヒューズホルダ９は、第１のリード端子３４の第２の部分３４Ｂと第２のキャップ状電極３３の間に位置して、第２の部分３４Ｂと第２のキャップ状電極３３の電気的な絶縁を図る第１の絶縁部９１、第２のキャップ状電極３３と第２のリード端子３５の第２の部分３５Ｂとの間に位置して、第２のリード端子３５の第２の部分３５Ｂと第２のキャップ状電極３３との間の間隔寸法の維持を図る第２の絶縁部９２、及び第１の絶縁部９１と第２の絶縁部９２の間に位置して第２のキャップ状電極３３が嵌合される電極被嵌合部９３を有している。第１の絶縁部９１と、電極被嵌合部９３と第２の絶縁部９２は、直線状に並んでいる。 FIG. 3(A) shows a perspective view of a vertical fuse device 100 according to a second embodiment of the present invention, and FIGS. 3(B) to (D) are right side views of the second embodiment. , showing a front view and a plan view. This vertical fuse device 100 has the same basic configuration as the vertical fuse device of the first embodiment in that a fuse holder is used as an insulating member, but the structure of the fuse holder 9 is different. Further, since the structure of the vertical fuse 3 is the same as that of the vertical fuse 3 of the first embodiment, the reference numerals used in FIG. 1 are used in FIG. 3, and the explanation thereof will be omitted. The fuse holder 9 is integrally molded from a resin having electrical insulation properties. The fuse holder 9 is located between the second portion 34B of the first lead terminal 34 and the second cap-shaped electrode 33, and electrically insulates the second portion 34B and the second cap-shaped electrode 33. The first insulating portion 91 is located between the second cap-shaped electrode 33 and the second portion 35B of the second lead terminal 35, and is located between the second portion 35B of the second lead terminal 35 and A second insulating part 92 that maintains the distance between the second cap-shaped electrode 33 and the second cap-shaped electrode located between the first insulating part 91 and the second insulating part 92. It has an electrode fitting part 93 into which the electrode 33 is fitted. The first insulating part 91, the electrode fitting part 93, and the second insulating part 92 are arranged in a straight line.
図３（Ａ）は、本発明の第２の実施の形態の縦置きヒューズ装置１００の斜視図を示し第１の絶縁部９１は第１のリード端子３４の第２の部分３４Ｂとヒューズ素子３１との間に位置して第１のリード端子３４の第２の部分３４Ｂに向かって延びる絶縁延長部９５を一体に備えている。絶縁延長部９５には、第１のリード端子３４の第２の部分３４Ｂの少なくとも一部が入り且つ第１の半田付け端子部３４Ｃが貫通する貫通孔９７が形成されている。第２のリード端子３５が、第１のリード端子３４と第２のキャップ状電極３３を間にして対向する位置に配置されており、絶縁延長部９５は、ヒューズ素子３１を間に挟むようにヒューズ素子３１の外周面３１Ａに沿い且つ第２のリード端子３５が位置する側に延びる一対の追加絶縁延長部９９を一体に備えている。その結果、絶縁延長部９５が第１のリード端子３４とヒューズ素子３１との間の絶縁耐力を高める機能を果たしている。本実施の形態では、絶縁延長部９５は第１のリード端子３４の第１の部分３４Ａの近くまで延びている。また、貫通孔９７に第１のリード端子３４を挿入する構造にすることで、第１のリード端子３４の曲がりを確実に防止できるうえ、周辺部品と第１のリード端子３４との間の電気的な絶縁を図ることができる。さらに、一対の追加絶縁延長部９９を設けることで、ヒューズ素子３１及び第２のキャップ状電極３３の周囲の電気的な絶縁を更に確実なものとすることができる。 FIG. 3(A) is a perspective view of a vertically installed fuse device 100 according to a second embodiment of the present invention. The first lead terminal 34 is integrally provided with an insulating extension part 95 positioned between the two parts and extending toward the second part 34B of the first lead terminal 34. A through hole 97 is formed in the insulating extension portion 95, into which at least a portion of the second portion 34B of the first lead terminal 34 enters and through which the first soldering terminal portion 34C passes. The second lead terminal 35 is arranged at a position facing the first lead terminal 34 and the second cap-shaped electrode 33, and the insulating extension part 95 is arranged so as to sandwich the fuse element 31 therebetween. A pair of additional insulating extensions 99 are integrally provided that extend along the outer peripheral surface 31A of the fuse element 31 and toward the side where the second lead terminal 35 is located. As a result, the insulating extension portion 95 functions to increase the dielectric strength between the first lead terminal 34 and the fuse element 31. In this embodiment, the insulating extension portion 95 extends close to the first portion 34A of the first lead terminal 34. Furthermore, by adopting a structure in which the first lead terminal 34 is inserted into the through hole 97, bending of the first lead terminal 34 can be reliably prevented, and the electrical It is possible to achieve effective insulation. Furthermore, by providing the pair of additional insulating extensions 99, electrical insulation around the fuse element 31 and the second cap-shaped electrode 33 can be further ensured.
図４（Ａ）は、本発明の第３の実施の形態の縦置きヒューズ装置２００の斜視図を示しており、図４（Ｂ）乃至（Ｄ）は第３の実施の形態の右側面図、正面図及び平面図を示している。この縦置きヒューズ装置２００は、絶縁部材としてのヒューズホルダ１１の形状が、第２の実施の形態のヒューズホルダ９の形状と若干異なっている。その他の点では、第２の実施の形態の縦置きヒューズ装置と基本構成は同様である。そこで同様の部分には、図３に付した符号を図４に付すことにより、その部分の説明を省略する。ヒューズホルダ１１は、電気絶縁特性を有する樹脂で一体に成形されている。ヒューズホルダ１１は、第１のリード端子３４の第２の部分３４Ｂと第２のキャップ状電極３３の間に位置して、第２の部分３４Ｂと第２のキャップ状電極３３の電気的な絶縁を図る第１の絶縁部１１１、第２のキャップ状電極３３と第２のリード端子３５の第２の部分３５Ｂとの間に位置して、第２のリード端子３５の第２の部分３５Ｂと第２のキャップ状電極３３との間の間隔寸法の維持を図る第２の絶縁部１１２、及び第１の絶縁部１１１と第２の絶縁部１１２の間に位置して第２のキャップ状電極３３が嵌合される電極被嵌合部１１３を有している。第１の絶縁部１１１は第１のリード端子３４の第２の部分３４Ｂとヒューズ素子３１との間に位置して第１のリード端子３４の第２の部分３４Ｂに向かって延びる絶縁延長部１１５を一体に備えている。絶縁延長部１１５には、第１のリード端子３４の第２の部分３４Ｂの少なくとも一部が入り且つ第１の半田付け端子部３４Ｃが貫通する貫通孔１１７が形成されている。第２のリード端子３５が、第１のリード端子３４と第２のキャップ状電極３３を間にして対向する位置に配置されており、絶縁延長部１１５は、ヒューズ素子３１を間に挟むようにヒューズ素子３１の外周面３１Ａに沿い且つ第２のリード端子３５が位置する側に延びる一対の追加絶縁延長部１１９を一体に備えている。 FIG. 4(A) shows a perspective view of a vertical fuse device 200 according to a third embodiment of the present invention, and FIGS. 4(B) to (D) are right side views of the third embodiment. , showing a front view and a plan view. In this vertical fuse device 200, the shape of the fuse holder 11 as an insulating member is slightly different from the shape of the fuse holder 9 of the second embodiment. In other respects, the basic configuration is the same as that of the vertical fuse device of the second embodiment. Therefore, the same parts are given the same reference numerals as in FIG. 3 in FIG. 4, and the explanation of those parts will be omitted. The fuse holder 11 is integrally molded from resin having electrical insulation properties. The fuse holder 11 is located between the second portion 34B of the first lead terminal 34 and the second cap-shaped electrode 33, and electrically insulates the second portion 34B and the second cap-shaped electrode 33. The first insulating part 111 is located between the second cap-shaped electrode 33 and the second part 35B of the second lead terminal 35, and is located between the second part 35B of the second lead terminal 35. A second insulating part 112 that maintains the distance between the second cap-shaped electrode 33 and the second cap-shaped electrode located between the first insulating part 111 and the second insulating part 112. It has an electrode fitting part 113 into which the electrode 33 is fitted. The first insulating portion 111 is an insulating extension portion 115 located between the second portion 34B of the first lead terminal 34 and the fuse element 31 and extending toward the second portion 34B of the first lead terminal 34. It is equipped with the following. A through hole 117 is formed in the insulating extension portion 115, into which at least a portion of the second portion 34B of the first lead terminal 34 enters and through which the first soldering terminal portion 34C passes. The second lead terminal 35 is arranged at a position facing the first lead terminal 34 and the second cap-shaped electrode 33, and the insulating extension part 115 is arranged so as to sandwich the fuse element 31 therebetween. A pair of additional insulating extensions 119 are integrally provided that extend along the outer peripheral surface 31A of the fuse element 31 and toward the side where the second lead terminal 35 is located.
本実施の形態では、第３の実施の形態の一対の追加絶縁延長部９９よりもヒューズ素子３１の外周面に沿って延びる長さが長い。このようにすると追加絶縁延長部１１９が、隣接する他の部品との間の絶縁耐力を高める機能を果たす。この機能の実現のためには、一対の追加絶縁延長部１１９はヒューズ素子３１の外周面の半分まで（最大直径部分まで）延びていれば足りる。 In this embodiment, the length extending along the outer peripheral surface of the fuse element 31 is longer than the pair of additional insulating extensions 99 in the third embodiment. In this way, the additional insulating extension 119 serves to increase the dielectric strength between other adjacent components. In order to realize this function, it is sufficient for the pair of additional insulating extensions 119 to extend up to half of the outer peripheral surface of the fuse element 31 (up to the maximum diameter part).
図５（Ａ）は、本発明の第４の実施の形態の縦置きヒューズ装置３００の斜視図を示しており、図５（Ｂ）乃至（Ｅ）は第４の実施の形態の右側面図、正面図、背面図及び平面図を示している。この縦置きヒューズ装置３００は、絶縁部材としてヒューズホルダを用いている点で第１乃至第３の実施の形態の縦置きヒューズ装置と基本構成は同様であるが、ヒューズホルダ１３の構造が異なり、縦置きヒューズ３´にも一部相違がある。 FIG. 5(A) shows a perspective view of a vertical fuse device 300 according to a fourth embodiment of the present invention, and FIGS. 5(B) to (E) are right side views of the fourth embodiment. , showing a front view, a back view and a top view. This vertical fuse device 300 has the same basic configuration as the vertical fuse devices of the first to third embodiments in that a fuse holder is used as an insulating member, but the structure of the fuse holder 13 is different. There are also some differences in the vertical fuse 3'.
縦置きヒューズ３´は、第１のリード端子３４の第２の部分３４Ｂの中央部に、長手方向に沿って延びる細長いリブ３７が一体に形成されている。リブ３７は、プレス成形により形成されており、ヒューズ素子３１から離れる方向に凸となり且つ第１のリード端子３４の第２の部分３４Ｂの中央部を長手方向に連続して延びている。このようにすることにより、長さの長い第１のリード端子３４の機械的強度を高めている。それ以外の縦置きヒューズ３´の構造は第１の実施の形態の縦置きヒューズ３と同じであるため、図１に付した符号を図５に付すことにより、説明を省略する。 In the vertical fuse 3', an elongated rib 37 extending in the longitudinal direction is integrally formed in the center of the second portion 34B of the first lead terminal 34. The rib 37 is formed by press molding, becomes convex in the direction away from the fuse element 31, and extends continuously in the longitudinal direction in the center of the second portion 34B of the first lead terminal 34. By doing so, the mechanical strength of the long first lead terminal 34 is increased. Since the other structure of the vertical fuse 3' is the same as that of the vertical fuse 3 of the first embodiment, the reference numerals used in FIG. 1 are used in FIG. 5, and the explanation thereof will be omitted.
ヒューズホルダ１３は、電気絶縁特性を有する樹脂で一体に成形されている。ヒューズホルダ１３は、第１のリード端子３４の第２の部分３４Ｂと第２のキャップ状電極３３の間に位置して、第２の部分３４Ｂと第２のキャップ状電極３３の電気的な絶縁を図る第１の絶縁部１３１、第２のキャップ状電極３３と第２のリード端子３５の第２の部分３５Ｂとの間に位置して、第２のリード端子３５の第２の部分３５Ｂと第２のキャップ状電極３３との間の間隔寸法の維持を図る第２の絶縁部１３２、及び第１の絶縁部１３１と第２の絶縁部１３２の間に位置して第２のキャップ状電極３３が嵌合される電極被嵌合部１３３を有している。第１の絶縁部１３１は略平板状を呈しており、電極被嵌合部１３３が形成されて第２の絶縁部１３２を含む部分は、有底の略円筒形状を呈している。したがって第２のリード端子３５の第２の部分と第２の絶縁部１３２とは、実質的に線接触状態にある。第１の絶縁部１３１と、電極被嵌合部１３３と第２の絶縁部１３２は、直線状に並んでいる。 The fuse holder 13 is integrally molded from resin having electrical insulation properties. The fuse holder 13 is located between the second portion 34B of the first lead terminal 34 and the second cap-shaped electrode 33, and electrically insulates the second portion 34B and the second cap-shaped electrode 33. The first insulating portion 131 is located between the second cap-shaped electrode 33 and the second portion 35B of the second lead terminal 35, and is located between the second portion 35B of the second lead terminal 35 and A second insulating part 132 that maintains the distance between the second cap-shaped electrode 33 and the second cap-shaped electrode located between the first insulating part 131 and the second insulating part 132. It has an electrode fitting part 133 into which the electrode 33 is fitted. The first insulating portion 131 has a substantially flat plate shape, and the portion where the electrode fitting portion 133 is formed and which includes the second insulating portion 132 has a substantially cylindrical shape with a bottom. Therefore, the second portion of the second lead terminal 35 and the second insulating portion 132 are substantially in line contact. The first insulating part 131, the electrode fitting part 133, and the second insulating part 132 are arranged in a straight line.
第１の絶縁部１３１は第１のリード端子３４の第２の部分３４Ｂとヒューズ素子３１との間に位置して第１のリード端子３４の第２の部分３４Ｂに向かって延びる絶縁延長部１３５を一体に備えている。絶縁延長部１３５には、第１のリード端子３４の第２の部分３４Ｂの少なくとも一部が入り且つ第１の半田付け端子部３４Ｃが貫通する貫通孔１３７が形成されている。第２のリード端子３５が、第１のリード端子３４と第２のキャップ状電極３３を間にして対向する位置に配置されており、絶縁延長部１３５は、ヒューズ素子３１を間に挟むようにヒューズ素子３１の外周面３１Ａに沿い且つ第２のリード端子３５が位置する側に延びる一対の追加絶縁延長部１３９を一体に備えている。一対の追加絶縁延長部１３９の横断面形状は、それぞれヒューズ素子３１の外周の半分まで沿う円弧形状を有している。本実施の形態では、絶縁延長部１３５は第１のリード端子３４の第２の部分３４Ｂの途中まで延びており、第３の実施の形態の絶縁延長部９５と比較して短い。そのため、第１のリード端子３４の第２の部分３４Ｂの中央部に細長いリブ３７を形成することにより、第１のリード端子３４の曲がりを防止する効果を補っている。 The first insulating portion 131 is an insulating extension portion 135 located between the second portion 34B of the first lead terminal 34 and the fuse element 31 and extending toward the second portion 34B of the first lead terminal 34. It is equipped with the following. A through hole 137 is formed in the insulating extension portion 135, into which at least a portion of the second portion 34B of the first lead terminal 34 enters and through which the first soldering terminal portion 34C passes. The second lead terminal 35 is arranged at a position facing the first lead terminal 34 and the second cap-shaped electrode 33, and the insulating extension part 135 is arranged so as to sandwich the fuse element 31 therebetween. A pair of additional insulating extensions 139 are integrally provided that extend along the outer circumferential surface 31A of the fuse element 31 and toward the side where the second lead terminal 35 is located. The cross-sectional shape of each of the pair of additional insulating extensions 139 has an arcuate shape that extends along half of the outer periphery of the fuse element 31 . In this embodiment, the insulating extension part 135 extends halfway through the second portion 34B of the first lead terminal 34, and is shorter than the insulating extension part 95 in the third embodiment. Therefore, by forming an elongated rib 37 at the center of the second portion 34B of the first lead terminal 34, the effect of preventing the first lead terminal 34 from bending is supplemented.
第１乃至第４の実施の形態のように、ヒューズホルダ７，９，１１，１３を用いる場合には、第１及び第２のリード端子３４及び３５が変形しにくいため、ヒューズホルダとヒューズとの組み合わせを自動化することも可能になる。さらに、ヒューズホルダ７，９，１１，１３と縦置きヒューズ３とを組み合わせる場合において、７，９，１１，１３側に端子を設けることなしに、第１及び第２のリード端子３４及び３５の第１及び第２の半田付け端子部３４Ｃ及び３５Ｃを用いて、回路基板への半田付けを行うのに十分な機械的強度を確保することができる。 When the fuse holders 7, 9, 11, and 13 are used as in the first to fourth embodiments, the first and second lead terminals 34 and 35 are not easily deformed, so that the fuse holder and the fuse It is also possible to automate the combination of Furthermore, when the fuse holders 7, 9, 11, 13 are combined with the vertical fuse 3, the first and second lead terminals 34 and 35 can be connected without providing terminals on the 7, 9, 11, 13 side. By using the first and second soldering terminal portions 34C and 35C, sufficient mechanical strength for soldering to a circuit board can be ensured.
図６（Ａ）は、本発明の第５の実施の形態の縦置きヒューズ装置１の斜視図を示しており、図６（Ｂ）及び（Ｃ）は第５の実施の形態の右側面図及び平面図を示している。この縦置きヒューズ装置１は、絶縁部材としてチューブ状電気絶縁材料５を用いている。なお、縦置きヒューズ３の構造は第１の実施の形態の縦置きヒューズ３と同じであるため、図１に付した符号を図６に付すことにより、説明を省略する。 FIG. 6(A) shows a perspective view of a vertical fuse device 1 according to a fifth embodiment of the present invention, and FIGS. 6(B) and (C) are right side views of the fifth embodiment. and a plan view. This vertical fuse device 1 uses a tubular electrical insulating material 5 as an insulating member. Note that since the structure of the vertical fuse 3 is the same as the vertical fuse 3 of the first embodiment, the reference numerals used in FIG. 1 are used in FIG. 6, and the explanation thereof will be omitted.
本実施の形態では、第１のリード端子３４の第２の部分３４Ｂに、電気絶縁性を有するチューブ状電気絶縁材料５が嵌められている。このチューブ状電気絶縁材料５の存在により第１のリード端子３４と第２のキャップ状電極３３との間の電気絶縁耐力を高めることができる。 In this embodiment, a tubular electrically insulating material 5 having electrically insulating properties is fitted into the second portion 34B of the first lead terminal 34. The presence of this tubular electrical insulating material 5 can increase the electrical dielectric strength between the first lead terminal 34 and the second cap-shaped electrode 33.
本発明の第１乃至第５の実施の形態の縦置きヒューズ装置によれば、５０Ａ以上の電流の遮断を対象とするヒューズであっても、第１のリード端子３４と第２のキャップ状電極３３との間の距離を短くしても両者間で放電が発生することを防止できる。なお遮断する電流値が低い場合には、ヒューズホルダ７，９，１１，１３やチューブ状電気絶縁材料５の絶縁部材を設ける必要はない。 According to the vertical fuse devices of the first to fifth embodiments of the present invention, even if the fuse is intended to interrupt a current of 50 A or more, the first lead terminal 34 and the second cap-shaped electrode Even if the distance between the two is shortened, it is possible to prevent discharge from occurring between the two. Note that when the current value to be cut off is low, it is not necessary to provide the fuse holders 7, 9, 11, 13 and the insulating member such as the tubular electrical insulating material 5.
本発明によれば、本発明の縦置きヒューズ装置のように、第１の絶縁部と第２の絶縁部を有する絶縁部材を用いると、縦置きヒューズを縦置きした場合でも、第１のリード端子及び第２のリード端子に対して、第１の絶縁部と第２の絶縁部の存在がスペーサとして機能するとともに、リード端子の支持部材としての機能を発揮する。その結果、第１のリード端子及び第２のリード端子が不必要に傾くことを阻止することができる。 According to the present invention, when an insulating member having a first insulating part and a second insulating part is used as in the vertical fuse device of the present invention, even when a vertical fuse is placed vertically, the first lead The presence of the first insulating part and the second insulating part functions as a spacer for the terminal and the second lead terminal, and also functions as a support member for the lead terminal. As a result, it is possible to prevent the first lead terminal and the second lead terminal from tilting unnecessarily.
また第１及び第２のリード端子の幅寸法を大きくすると、ヒューズ素子を回路基板上に縦置きで実装する場合でも、第１及び第２のリード端子の変形を防止することができる。その結果、回路基板に実装した縦置ヒューズが不必要に傾倒することを防止することができる。 Further, by increasing the width of the first and second lead terminals, deformation of the first and second lead terminals can be prevented even when the fuse element is mounted vertically on a circuit board. As a result, it is possible to prevent the vertical fuse mounted on the circuit board from tilting unnecessarily.
１ 縦置きヒューズ装置
３ 縦置きヒューズ
５ チューブ状電気絶縁材料
７，９，１１，１３ ヒューズホルダ
３１ ヒューズ素子
３２ 第１のキャップ状電極
３３ 第２のキャップ状電極
３４ 第１のリード端子
３５ 第２のリード端子
1 Vertical fuse device 3 Vertical fuse 5 Tubular electrical insulating material 7, 9, 11, 13 Fuse holder 31 Fuse element 32 First cap-shaped electrode 33 Second cap-shaped electrode 34 First lead terminal 35 Second lead terminal
Claims (13)
前記ヒューズ素子の一端に嵌合固定された第１のキャップ状電極と、
前記ヒューズ素子の他端に嵌合固定された第２のキャップ状電極と、
前記第１のキャップ状電極の開口部側端部に一端が接続され前記ヒューズ素子の前記仮想中心線と交差し且つ該ヒューズ素子から離れる方向に延びる第１の部分と、該第１の部分と一体に設けられて前記ヒューズ素子との間に間隔をあけた状態で前記ヒューズ素子の前記仮想中心線に沿い、前記第２のキャップ状電極を越える位置まで延びる第２の部分と、該第２の部分の先端に設けられた第１の半田付け端子部を備えた第１のリード端子と、
前記第２のキャップ状電極の開口部側端部に一端が接続され前記ヒューズ素子の前記仮想中心線と交差し且つ前記第１のリード端子と緩衝しない方向に延びる第１の部分と、該第１の部分と一体に設けられて前記第２のキャップ状電極との間に間隔をあけた状態で前記第２のキャップ状電極を越える位置まで延びる第２の部分と、該第２の部分の先端に設けられた第２の半田付け端子部を備えた第２のリード端子と、
からなる縦置きヒューズと、
少なくとも前記第１のリード端子の前記第２の部分と前記第２のキャップ状電極の間に位置して、前記第１のリード端子の前記第２の部分と前記第２のキャップ状電極の電気的な絶縁を図る第１の絶縁部及び、前記第２のキャップ状電極と前記第２のリード端子の前記第２の部分との間に位置して、前記第２のリード端子の前記第２の部分と前記第２のキャップ状電極との間の間隔寸法の維持を図る第２の絶縁部を有する絶縁部材を備えていることを特徴とする縦置きヒューズ装置。 a cylindrical fuse element having a virtual centerline extending in the longitudinal direction;
a first cap-shaped electrode fitted and fixed to one end of the fuse element;
a second cap-shaped electrode fitted and fixed to the other end of the fuse element;
a first portion having one end connected to the opening side end of the first cap-shaped electrode, intersecting the virtual center line of the fuse element and extending in a direction away from the fuse element; a second portion that is integrally provided and extends along the imaginary center line of the fuse element to a position beyond the second cap-shaped electrode with a gap between the second portion and the fuse element; a first lead terminal having a first soldering terminal portion provided at the tip of the portion;
a first portion having one end connected to the opening side end of the second cap-shaped electrode and extending in a direction that intersects the virtual center line of the fuse element and does not buffer against the first lead terminal; a second portion that is provided integrally with the first portion and extends to a position beyond the second cap-like electrode with a space between the second portion and the second cap-like electrode; a second lead terminal having a second soldering terminal portion provided at the tip;
a vertical fuse consisting of;
located between at least the second portion of the first lead terminal and the second cap-like electrode, the second portion of the first lead terminal and the second cap-like electrode are electrically connected; a first insulating part for achieving physical insulation, and a first insulating part located between the second cap-shaped electrode and the second part of the second lead terminal, A vertical fuse device comprising: an insulating member having a second insulating portion that maintains the distance between the portion and the second cap-shaped electrode.
第２のリード端子と第２のキャップ状電極は一体に形成されており、
前記第１のリード端子の前記第１の部分及び前記第２の部分は、前記第１のキャップ状電極の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有しており、
前記第２のリード端子の前記第１の部分及び第２の部分は、前記第２のキャップ状電極の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有していることを特徴とする請求項１に記載の縦置きヒューズ装置。 The first lead terminal and the first cap-shaped electrode are integrally formed,
The second lead terminal and the second cap-shaped electrode are integrally formed,
The first portion and the second portion of the first lead terminal have a width close to or greater than the maximum diameter of the first cap-shaped electrode,
The first portion and the second portion of the second lead terminal are characterized in that the width dimension is close to or larger than the maximum diameter dimension of the second cap-shaped electrode. The vertical fuse device according to claim 1.
前記絶縁延長部には、前記ヒューズ素子を間に挟むように前記ヒューズ素子の外周面に沿い且つ前記第２のリード端子が位置する側に延びる一対の追加絶縁延長部を一体に備えている請求項５または６に記載の縦置きヒューズ装置。 The second lead terminal is disposed at a position facing the first lead terminal and the second cap-shaped electrode, and
The insulating extension part is integrally provided with a pair of additional insulating extension parts that extend along the outer circumferential surface of the fuse element and on the side where the second lead terminal is located so as to sandwich the fuse element therebetween. Vertical fuse device according to item 5 or 6.
前記ヒューズ素子の一端に嵌合固定された第１のキャップ状電極と、
前記ヒューズ素子の他端に嵌合固定された第２のキャップ状電極と、
前記第１のキャップ状電極の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有して、前記第１のキャップ状電極の開口部側端部に一端が接続され前記ヒューズ素子の前記仮想中心線と交差し且つ該ヒューズ素子から離れる方向に延びる第１の部分と、該第１の部分と一体に設けられて前記ヒューズ素子との間に間隔をあけた状態で前記ヒューズ素子の前記仮想中心線に沿い、前記第２のキャップ状電極を越える位置まで延びる第２の部分と該第２の部分の先端に設けられた第１の半田付け端子部を備えた第１のリード端子と、
前記第２のキャップ状電極の最大直径寸法に近い又は最大直径寸法以上の幅寸法を有して、前記第２のキャップ状電極の開口部側端部に一端が接続され前記ヒューズ素子の前記仮想中心線と交差し且つ前記第１のリード端子と緩衝しない方向に延びる第１の部分と、該第１の部分と一体に設けられて前記第２のキャップ状電極との間に間隔をあけた状態で前記第２のキャップ状電極を越える位置まで延びる第２の部分と該第２の部分の先端に設けられた第２の半田付け端子部を備えた第２のリード端子と
を備えていることを特徴とする請求項１乃至９のいずれか１項に記載の縦置きヒューズ装置に使用する縦置きヒューズ。 a cylindrical fuse element having a virtual centerline extending in the longitudinal direction;
a first cap-shaped electrode fitted and fixed to one end of the fuse element;
a second cap-shaped electrode fitted and fixed to the other end of the fuse element;
The imaginary fuse element has a width close to or greater than the maximum diameter of the first cap-shaped electrode, and one end of which is connected to the opening side end of the first cap-shaped electrode. a first portion that intersects a center line and extends in a direction away from the fuse element; and the imaginary portion of the fuse element that is provided integrally with the first portion and is spaced apart from the fuse element. a first lead terminal including a second portion extending along the center line to a position beyond the second cap-shaped electrode and a first soldering terminal portion provided at the tip of the second portion;
The imaginary fuse element has a width close to or greater than the maximum diameter of the second cap-shaped electrode, and one end of which is connected to the opening side end of the second cap-shaped electrode. A space is provided between a first portion that intersects the center line and extends in a direction that does not buffer the first lead terminal, and the second cap-shaped electrode that is provided integrally with the first portion. a second portion extending to a position beyond the second cap-shaped electrode in the state of the electrode, and a second lead terminal provided with a second soldering terminal portion provided at the tip of the second portion. A vertical fuse for use in a vertical fuse device according to any one of claims 1 to 9.
12. A vertically oriented fuse device using a vertically oriented fuse according to claim 10 or 11, wherein the second portion of the first lead terminal is covered with a tubular electrically insulating material having electrically insulating performance. Vertical fuse device.
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| US20020080005A1 (en) | 2000-07-07 | 2002-06-27 | Mollet Ronald Emil | Fused disconnect switch |
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| US5235307A (en) * | 1992-08-10 | 1993-08-10 | Littelfuse, Inc. | Solderless cartridge fuse |
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