JP2020119981A

JP2020119981A - Metalized film and metalized film capacitor

Info

Publication number: JP2020119981A
Application number: JP2019009472A
Authority: JP
Inventors: 翔中坂; Sho Nakasaka; 千一小笹; Senichi Ozasa
Original assignee: Shizuki Electric Co Inc
Current assignee: Shizuki Electric Co Inc
Priority date: 2019-01-23
Filing date: 2019-01-23
Publication date: 2020-08-06
Anticipated expiration: 2039-01-23
Also published as: JP7296734B2

Abstract

To provide a metalized film in which operability of a fuse part is improved.SOLUTION: When split electrodes 13 are defined as a first column, a second column and a third column successively from the side of a connection part 6 in a width direction of a dielectric film 3, a fuse part 14 is not provided between the split electrodes 13 and 13 belonging to the first column and between the split electrodes 13 and 13 belonging to the second column, and the first part 14 is provided between the split electrodes 13 and 13 belonging to the third column. Further, one split electrode 13 belonging to the first column is connected with two split electrodes 13 and 13 belonging to the second column via the fuse part 14, and one split electrode 13 belonging to the second column is connected with two split electrodes 13 and 13 belonging to the first column via the fuse part 14 and connected with one split electrode 13 belonging to the third column via the fuse part 14.SELECTED DRAWING: Figure 2

Description

この発明は、誘電体フィルム上に蒸着電極を形成してなる金属化フィルム及びそれを用いた金属化フィルムコンデンサに関する。 The present invention relates to a metallized film in which a vapor deposition electrode is formed on a dielectric film and a metallized film capacitor using the same.

金属化フィルムコンデンサにおいて、誘電体フィルムの表面に蒸着された蒸着電極を絶縁スリットによって区画し、区画された分割電極同士をヒューズ部を介して接続することは、例えば特許文献１、２に示すように従来から行われている。このような構成の金属化フィルムコンデンサは、絶縁が欠損した部分の蒸着電極を飛散させることで絶縁を回復する自己回復機能に加えて、自己回復機能で絶縁を回復できなかった場合にヒューズ部を溶断して欠陥電極を切り離し、絶縁を回復させる自己保安機能を備えている。なお、ヒューズ部の溶断は、欠陥電極の周辺に位置し、互いにヒューズ部を介して接続されている分割電極（以下、近隣電極という）から流れ込む電流によって生じる。 In the metallized film capacitor, the vapor deposition electrodes vapor-deposited on the surface of the dielectric film are divided by insulating slits, and the divided electrodes are connected to each other via a fuse portion, as disclosed in Patent Documents 1 and 2, for example. Has been traditionally done. In addition to the self-healing function that recovers the insulation by scattering the vapor deposition electrode in the part where the insulation is missing, the metallized film capacitor with such a configuration has a fuse part when the insulation cannot be recovered by the self-recovery function. It has a self-safety function that recovers the insulation by melting and cutting off the defective electrode. The fusing of the fuse portion is caused by a current flowing from divided electrodes (hereinafter referred to as neighboring electrodes) located around the defective electrode and connected to each other through the fuse portion.

特許第６０７４６２３号公報Japanese Patent No. 6074623 特開平１０−３０８３２３号公報JP, 10-308323, A

ところで、近年、誘電体フィルムの薄膜化に伴い電位傾度が増加したことで、絶縁不良が生じ易くなっている。そのため、ヒューズ部を確実に動作させることが重要になっているが、１つの分割電極に対して複数のヒューズ部が接続されている場合、近隣電極から欠陥電極に至る経路が複数形成されるため、ある近隣電極からの電流は複数のヒューズ部に分散して欠陥電極に流れ込むことになる。この際、電流が全て均等に分散するのであれば特に問題はないが、ヒューズ部間での寸法差等によって不均等に分散するため、あるヒューズ部には電流が十分流れるが、あるヒューズ部には電流があまり流れないといった状況が生じ、ヒューズ部の動作（溶断）に支障をきたすことがあった。 By the way, in recent years, with the thinning of the dielectric film, the potential gradient has increased, and thus insulation failure is likely to occur. Therefore, it is important to surely operate the fuse portion, but when a plurality of fuse portions are connected to one divided electrode, a plurality of paths from the neighboring electrode to the defective electrode are formed. , The current from a certain neighboring electrode is distributed to a plurality of fuse parts and flows into the defective electrode. At this time, if all the currents are evenly distributed, there is no particular problem, but since the currents are sufficiently distributed to a certain fuse part because they are unevenly distributed due to dimensional differences among the fuse parts, etc. In some cases, the current did not flow so much, which hindered the operation (fusing) of the fuse portion.

そこで本発明は、ヒューズ部の動作性を改善した金属化フィルムの提供を目的とする。 Then, this invention aims at provision of the metallized film which improved the operability of a fuse part.

上記課題を解決するため、本発明の金属化フィルムは、誘電体フィルム３に蒸着電極４を形成してなる金属化フィルム２（２Ａ）であって、蒸着電極４が、誘電体フィルム３の幅方向の一方端部に設けられた接続部６と、絶縁スリット８によって分割された略四角形の複数の分割電極１３と、隣り合う分割電極１３、１３同士を接続するヒューズ部１４とを備えており、分割電極１３が誘電体フィルム３の幅方向に少なくとも３列並んでおり、誘電体フィルム３の幅方向において接続部６側の分割電極１３の列から順に、第１の列、第２の列、第３の列としたときに、第１の列に属する分割電極１３、１３同士の間と、第２の列に属する分割電極１３、１３同士の間とにはヒューズ部１４が設けられておらず、第３の列に属する分割電極１３、１３同士の間にヒューズ部１４が設けられており、さらに、第１の列に属する１つの分割電極１３が第２の列に属する２つの分割電極１３、１３とヒューズ部１４を介して接続され、第２の列に属する１つの分割電極１３が、第１の列に属する２つの分割電極１３、１３とヒューズ部１４を介して接続されているとともに、第３の列に属する１つの分割電極１３とヒューズ部１４を介して接続されていることを特徴としている。 In order to solve the above-mentioned problem, the metallized film of the present invention is a metallized film 2 (2A) formed by forming a vapor deposition electrode 4 on a dielectric film 3, and the vapor deposition electrode 4 has a width of the dielectric film 3. It is provided with a connecting portion 6 provided at one end in the direction, a plurality of substantially quadrangular divided electrodes 13 divided by an insulating slit 8, and a fuse portion 14 connecting adjacent divided electrodes 13, 13. The divided electrodes 13 are arranged in at least three rows in the width direction of the dielectric film 3, and the first row and the second row are arranged in order from the row of the divided electrodes 13 on the connection portion 6 side in the width direction of the dielectric film 3. , And a third column, a fuse portion 14 is provided between the divided electrodes 13 and 13 belonging to the first column and between the divided electrodes 13 and 13 belonging to the second column. However, the fuse portion 14 is provided between the divided electrodes 13 belonging to the third column, and one divided electrode 13 belonging to the first column is divided into two divided electrodes belonging to the second column. One of the divided electrodes 13 belonging to the second column is connected to the electrodes 13 and 13 via the fuse portion 14, and two divided electrodes 13 and 13 belonging to the first column are connected to each other via the fuse portion 14. In addition, it is characterized in that it is connected to one divided electrode 13 belonging to the third column through a fuse portion 14.

また、本発明の別の金属化フィルムは、誘電体フィルム３に蒸着電極４を形成してなる金属化フィルム２（２Ａ、２Ｂ）であって、蒸着電極４が、誘電体フィルム３の幅方向の一方端部に設けられた接続部６と、絶縁スリット８によって分割された複数の分割電極１３と、隣り合う分割電極１３、１３同士を接続するヒューズ部１４とを備えており、最も接続部６側の分割電極１３を除く他の分割電極１３が、分割電極１つにつき３つの分割電極とヒューズ部１４を介して接続されており、以下の関係が全ての分割電極１３において成り立っていることを特徴としている。
（１）ある任意の分割電極１３を基点分割電極Ｒとし、基点分割電極Ｒとヒューズ部１４を介して接続された分割電極１３を一次分割電極Ｒ１（Ｒ２、Ｒ３）とし、一次分割電極Ｒ１（Ｒ２、Ｒ３）と他のヒューズ部１４を介して接続された分割電極１３を二次分割電極Ｒ１１、Ｒ１２（Ｒ２１、Ｒ２２、Ｒ３１、Ｒ３２）としたとき、任意の二次分割電極から分割電極１３を通って基点分割電極Ｒに至る経路が２以上形成され、うち１つの経路がヒューズ部１４を２つだけ通る経路とされ、他の経路はヒューズ部１４を３つ以上通る経路とされている。 Another metallized film of the present invention is a metallized film 2 (2A, 2B) formed by forming vapor deposition electrodes 4 on the dielectric film 3, wherein the vapor deposition electrodes 4 are in the width direction of the dielectric film 3. The connecting portion 6 provided at one end portion, the plurality of divided electrodes 13 divided by the insulating slits 8, and the fuse portion 14 that connects the adjacent divided electrodes 13 to each other are provided. The divided electrodes 13 other than the divided electrode 13 on the 6 side are connected to three divided electrodes for each divided electrode via the fuse portion 14, and the following relationship is established in all the divided electrodes 13. Is characterized by.
(1) An arbitrary divided electrode 13 is used as a base divided electrode R, the divided electrode 13 connected to the base divided electrode R via a fuse portion 14 is used as a primary divided electrode R1 (R2, R3), and a primary divided electrode R1( R2, R3) and the divided electrode 13 connected via the other fuse portion 14 to the secondary divided electrodes R11, R12 (R21, R22, R31, R32), the divided electrode 13 is divided from any secondary divided electrode. Two or more paths are formed to reach the base point split electrode R through one of them, one path is a path that passes only two fuse portions 14, and the other path is a path that passes three or more fuse portions 14. ..

また、本発明のさらに別の金属化フィルムは、誘電体フィルム３に蒸着電極４を形成してなる金属化フィルム２（２Ａ）であって、蒸着電極４が、絶縁スリット８によって分割された略四角形の複数の分割電極１３と、隣り合う分割電極１３、１３同士を接続するヒューズ部１４とを備えており、以下の関係が全ての分割電極１３において成り立っていることを特徴としている。
（１）ある任意の分割電極１３を基点分割電極Ｒとし、基点分割電極Ｒとヒューズ部１４を介して接続された分割電極１３を一次分割電極Ｒ１（Ｒ２、Ｒ３）とし、一次分割電極Ｒ１（Ｒ２、Ｒ３）と他のヒューズ部１４を介して接続された分割電極１３を二次分割電極Ｒ１１、Ｒ１２（Ｒ２１、Ｒ２２、Ｒ３１、Ｒ３２）としたとき、任意の二次分割電極から分割電極１３を通って基点分割電極Ｒに至る経路が２以上形成され、うち１つの経路がヒューズ部１４を２つだけ通る経路とされ、他の経路はヒューズ部１４を３つ以上通る経路とされている。 Still another metallized film of the present invention is a metallized film 2 (2A) formed by forming a vapor deposition electrode 4 on a dielectric film 3, the vapor deposition electrode 4 being divided by an insulating slit 8. It is provided with a plurality of quadrangular divided electrodes 13 and a fuse portion 14 that connects adjacent divided electrodes 13, 13 to each other, and is characterized in that the following relationship is established in all the divided electrodes 13.
(1) An arbitrary divided electrode 13 is used as a base divided electrode R, the divided electrode 13 connected to the base divided electrode R via a fuse portion 14 is used as a primary divided electrode R1 (R2, R3), and a primary divided electrode R1( R2, R3) and the divided electrode 13 connected via the other fuse portion 14 to the secondary divided electrodes R11, R12 (R21, R22, R31, R32), the divided electrode 13 is divided from any secondary divided electrode. Two or more paths are formed to reach the base point split electrode R through one of them, one path is a path that passes only two fuse portions 14, and the other path is a path that passes three or more fuse portions 14. ..

また、本発明のさらに別の金属化フィルムは、誘電体フィルム３に蒸着電極４を形成してなる金属化フィルム２（２Ａ、２Ｂ）であって、蒸着電極４が、誘電体フィルム３の幅方向の一方端部に設けられた接続部６と、絶縁スリット８によって分割された複数の分割電極１３と、隣り合う分割電極１３、１３同士を接続するヒューズ部１４とを備えており、最も接続部６側の分割電極１３を除く他の分割電極１３が、分割電極１つにつき３つの分割電極とヒューズ部１４を介して接続されており、以下の関係がある分割電極１３において成り立っていることを特徴としている。
（２）ある任意の分割電極１３を基点分割電極Ｒとし、基点分割電極Ｒと第１のヒューズ部１４を介して接続された一次分割電極Ｒ１と、この一次分割電極Ｒ１と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ１１、Ｒ１２とを第１の分割電極群とし、基点分割電極Ｒと第２のヒューズ部１４を介して接続された一次分割電極Ｒ２と、この一次分割電極Ｒ２と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ２１、Ｒ２２とを第２の分割電極群とし、基点分割電極Ｒと第３のヒューズ部１４を介して接続された一次分割電極Ｒ３と、この一次分割電極Ｒ３と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ３１、Ｒ３２とを第３の分割電極群としたとき、分割電極群間で分割電極１３の重複が生じていない。 Yet another metallized film of the present invention is a metallized film 2 (2A, 2B) formed by forming vapor deposition electrodes 4 on a dielectric film 3, wherein the vapor deposition electrodes 4 are the width of the dielectric film 3. The connection portion 6 provided at one end in the direction, the plurality of divided electrodes 13 divided by the insulating slits 8, and the fuse portion 14 that connects the adjacent divided electrodes 13 to each other are the most connected. The divided electrodes 13 other than the divided electrode 13 on the side of the portion 6 are connected to three divided electrodes per divided electrode via the fuse portion 14, and the divided electrodes 13 having the following relationships are established. Is characterized by.
(2) A given split electrode 13 is used as a base split electrode R, a primary split electrode R1 connected to the base split electrode R via a first fuse portion 14, the primary split electrode R1 and another fuse portion 14 The two secondary divided electrodes R11 and R12 connected via the first divided electrode group are used as a first divided electrode group, and the primary divided electrode R2 connected to the base divided electrode R via the second fuse portion 14 and the primary divided electrode R2. Two secondary divided electrodes R21 and R22 connected to the divided electrode R2 via the other fuse portion 14 are used as a second divided electrode group, and are connected to the base divided electrode R via the third fuse portion 14. When the primary divided electrode R3 and the two secondary divided electrodes R31 and R32 connected to the primary divided electrode R3 via another fuse part 14 are used as a third divided electrode group, There is no overlap of the divided electrodes 13.

また、本発明のさらに別の金属化フィルムは、誘電体フィルム３に蒸着電極４を形成してなる金属化フィルム２（２Ａ）であって、蒸着電極４が、絶縁スリット８によって分割された略四角形の複数の分割電極１３と、隣り合う分割電極１３、１３同士を接続するヒューズ部１４とを備えており、以下の関係がある分割電極１３において成り立っていることを特徴としている。
（２）ある任意の分割電極１３を基点分割電極Ｒとし、基点分割電極Ｒと第１のヒューズ部１４を介して接続された一次分割電極Ｒ１と、この一次分割電極Ｒ１と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ１１、Ｒ１２とを第１の分割電極群とし、基点分割電極Ｒと第２のヒューズ部１４を介して接続された一次分割電極Ｒ２と、この一次分割電極Ｒ２と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ２１、Ｒ２２とを第２の分割電極群とし、基点分割電極Ｒと第３のヒューズ部１４を介して接続された一次分割電極Ｒ３と、この一次分割電極Ｒ３と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ３１、Ｒ３２とを第３の分割電極群としたとき、分割電極群間で分割電極１３の重複が生じていない。 Still another metallized film of the present invention is a metallized film 2 (2A) formed by forming a vapor deposition electrode 4 on a dielectric film 3, the vapor deposition electrode 4 being divided by an insulating slit 8. It is characterized in that it is provided with a plurality of rectangular divided electrodes 13 and a fuse portion 14 that connects adjacent divided electrodes 13, 13 to each other, and is formed in the divided electrodes 13 having the following relationships.
(2) A given split electrode 13 is used as a base split electrode R, a primary split electrode R1 connected to the base split electrode R via a first fuse portion 14, the primary split electrode R1 and another fuse portion 14 The two secondary divided electrodes R11 and R12 connected via the first divided electrode group are used as a first divided electrode group, and the primary divided electrode R2 connected to the base divided electrode R via the second fuse portion 14 and the primary divided electrode R2. Two secondary divided electrodes R21 and R22 connected to the divided electrode R2 via the other fuse portion 14 are used as a second divided electrode group, and are connected to the base divided electrode R via the third fuse portion 14. When the primary divided electrode R3 and the two secondary divided electrodes R31 and R32 connected to the primary divided electrode R3 via another fuse part 14 are used as a third divided electrode group, There is no overlap of the divided electrodes 13.

本発明の金属化フィルムコンデンサは、上記いずれかの金属化フィルム２（２Ａ、２Ｂ）を用いていることを特徴としている。 The metallized film capacitor of the present invention is characterized by using any one of the above metallized films 2 (2A, 2B).

本発明の金属化フィルムは、分割電極が誘電体フィルムの幅方向に少なくとも３列並んでおり、誘電体フィルムの幅方向において接続部側の分割電極の列から順に、第１の列、第２の列、第３の列としたときに、第１の列に属する分割電極同士の間と、第２の列に属する分割電極同士の間とにはヒューズ部が設けられておらず、第３の列に属する分割電極同士の間にヒューズ部が設けられており、さらに、第１の列に属する１つの分割電極が第２の列に属する２つの分割電極とヒューズ部を介して接続され、第２の列に属する１つの分割電極が、第１の列に属する２つの分割電極とヒューズ部を介して接続されているとともに、第３の列に属する１つの分割電極とヒューズ部を介して接続されているため、第１の列から第３の列の任意の分割電極を基点分割電極とし、基点分割電極とヒューズ部を介して接続される分割電極を一次分割電極とし、一次分割電極とヒューズ部を介して接続する分割電極を二次分割電極としたとき、二次分割電極から分割電極を通って基点分割電極に至る経路が複数形成され、うち１つの経路がヒューズ部を２つだけ通る経路となり、他の経路はヒューズ部を３つ以上通る経路となる。そのため、基点分割電極で絶縁破壊が生じた場合に、二次分割電極からの電流は、ヒューズ部を２つだけ通る経路を通って基点分割電極に流れることとなり、電流の分散が抑制され、ヒューズ部の動作性を良好なものとすることができる。また、分割電極が略四角形であるため、略三角形とされた場合に比べて分割電極の隅部（コーナー部）における電界集中を抑制することができる。 In the metallized film of the present invention, the divided electrodes are arranged in at least three rows in the width direction of the dielectric film, and the first row and the second row are arranged in order from the row of the divided electrodes on the connection portion side in the width direction of the dielectric film. In the third column, the fuse portion is not provided between the divided electrodes belonging to the first column and between the divided electrodes belonging to the second column. A fuse part is provided between the divided electrodes belonging to the column, and one divided electrode belonging to the first column is connected to two divided electrodes belonging to the second column through the fuse part, One divided electrode belonging to the second column is connected to two divided electrodes belonging to the first column via a fuse part, and one divided electrode belonging to the third column is connected to a fuse part. Since they are connected, any of the divided electrodes in the first to third columns is used as a base divided electrode, the divided electrode connected to the base divided electrode via the fuse portion is used as a primary divided electrode, and the primary divided electrode is used. When the split electrode connected through the fuse part is a secondary split electrode, a plurality of paths are formed from the secondary split electrode to the base split electrode through the split electrode, one of which has only two fuse parts. The other path is a path that passes through three or more fuse parts. Therefore, when dielectric breakdown occurs in the base split electrode, the current from the secondary split electrode flows to the base split electrode through a path that passes through only two fuse parts, and the current dispersion is suppressed and the fuse The operability of the part can be improved. Further, since the divided electrodes are substantially quadrangular, it is possible to suppress the electric field concentration at the corners (corners) of the divided electrodes as compared with the case where the divided electrodes are made substantially triangular.

本発明の別の金属化フィルムにおいても、二次分割電極から分割電極を通って基点分割電極に至る経路が複数形成され、うち１つの経路がヒューズ部を２つだけ通る経路とされ、他の経路はヒューズ部を３つ以上通る経路とされていることから、基点分割電極で絶縁破壊が生じた場合、二次分割電極からの電流は、ヒューズ部を２つだけ通る経路を通って基点分割電極に流れることとなり、電流の分散が抑制され、ヒューズ部の動作性を良好なものとすることができる。 Also in the other metallized film of the present invention, a plurality of paths from the secondary divided electrode to the base divided electrode through the divided electrodes are formed, and one of the paths is a path that passes through only two fuse parts, Since the path is a path that passes through three or more fuse parts, when dielectric breakdown occurs in the base point split electrode, the current from the secondary split electrode is split into the base point through the path that passes only two fuse parts. Since the current flows through the electrodes, the current dispersion is suppressed, and the operability of the fuse portion can be improved.

本発明のさらに別の金属化フィルムにおいては、分割電極群間で分割電極の重複が生じていないため、二次分割電極から基点分割電極に至る経路のうち、通過するヒューズ部の数が最も少ない経路は１つしか形成されないこととなり、電流の分散が抑制され、ヒューズ部の動作性を良好なものとすることができる。 In yet another metallized film of the present invention, since the divisional electrodes do not overlap between the divisional electrode groups, the number of fuse portions passing through is the smallest among the paths from the secondary divisional electrode to the base division electrode. Since only one path is formed, the current dispersion is suppressed and the operability of the fuse portion can be improved.

本願発明の実施形態に係る金属化フィルムコンデンサの一部を示す断面図である。It is sectional drawing which shows a part of metallized film capacitor which concerns on embodiment of this invention. 本願発明の実施形態に係る金属化フィルムの平面図である。It is a top view of the metallized film which concerns on embodiment of this invention. 図２の部分拡大図であって、第３の列に属する分割電極を二次分割電極とした場合の、二次分割電極から基点分割電極への電流の経路を示す。FIG. 3 is a partially enlarged view of FIG. 2, showing a current path from the secondary split electrode to the base split electrode when the split electrode belonging to the third column is the secondary split electrode. 本発明の異なる実施形態に係る金属化フィルムの平面図である。FIG. 3 is a plan view of a metallized film according to another embodiment of the present invention. 本発明のさらに異なる実施形態に係る金属化フィルムの平面図である。FIG. 6 is a plan view of a metallized film according to another embodiment of the present invention.

次に、この発明の金属化フィルムの実施形態を図面に基づいて詳細に説明する。金属化フィルム２は、図１に示すように、誘電体フィルム３の表面にアルミや亜鉛等を蒸着させ、蒸着電極４を形成することで構成されている。 Next, embodiments of the metallized film of the present invention will be described in detail with reference to the drawings. As shown in FIG. 1, the metallized film 2 is formed by vapor-depositing aluminum, zinc or the like on the surface of the dielectric film 3 to form the vapor deposition electrode 4.

蒸着電極４は、図２に示すように、誘電体フィルム３の幅方向（以下、フィルム幅方向）の一方端部まで設けられている。その一方で、他方端部には誘電体フィルム３の長さ方向（以下、フィルム長さ方向）の全長に亘って設けられていない。これは、金属化フィルム２、２を重ね合わせてコンデンサ素子を製造するにあたって、フィルム幅方向の両端部にそれぞれ設けられるメタリコン電極５、５の双方と蒸着電極４とが接続しないようにするためのものである（図１参照）。なお、以下、説明のために、フィルム幅方向の一方端部側であってメタリコン電極５と接続される部位を接続部６と称し、フィルム幅方向の他方端部側の非蒸着部を絶縁マージン７と称す。 As shown in FIG. 2, the vapor deposition electrode 4 is provided up to one end of the dielectric film 3 in the width direction (hereinafter referred to as the film width direction). On the other hand, the other end is not provided over the entire length of the dielectric film 3 in the length direction (hereinafter referred to as the film length direction). This is for preventing the vapor deposition electrode 4 from being connected to both the metallikon electrodes 5 and 5 respectively provided at both ends in the film width direction when manufacturing the capacitor element by stacking the metallized films 2 and 2. (See FIG. 1). For the sake of description, a portion on one end side in the film width direction that is connected to the metallikon electrode 5 is referred to as a connecting portion 6, and a non-deposited portion on the other end side in the film width direction is an insulating margin. It is called 7.

上記構成の蒸着電極４は、細長の非蒸着部からなる絶縁スリット８によって分割されている。具体的には、フィルム長さ方向に平行な複数の第１絶縁スリット８ａと、フィルム幅方向に平行な複数の第２絶縁スリット８ｂによって分割されている。 The vapor deposition electrode 4 having the above structure is divided by an insulating slit 8 composed of an elongated non-vapor deposition portion. Specifically, it is divided by a plurality of first insulating slits 8a parallel to the film length direction and a plurality of second insulating slits 8b parallel to the film width direction.

第１絶縁スリット８ａは、フィルム幅方向に３本設けられている。最も接続部６側に位置する第１絶縁スリット８ａは、フィルム幅方向の略中央に設けられており、蒸着電極４を、接続部側電極１１と絶縁マージン側電極１２とに分割している。他の２本の第１絶縁スリット８ａ、８ａは、絶縁マージン側電極１２をフィルム幅方向に略３等分している。ただし必ずしも略３等分とする必要はない。以下、フィルム幅方向に３分割された蒸着電極を、接続部６に近い側から第１の列、第２の列、第３の列とする。 Three first insulating slits 8a are provided in the width direction of the film. The first insulating slit 8a located closest to the connection portion 6 side is provided substantially at the center in the film width direction, and divides the vapor deposition electrode 4 into a connection portion side electrode 11 and an insulation margin side electrode 12. The other two first insulating slits 8a and 8a divide the insulating margin side electrode 12 into approximately three equal parts in the film width direction. However, it is not always necessary to divide it into approximately three equal parts. Hereinafter, the vapor deposition electrodes divided into three in the film width direction will be referred to as a first row, a second row, and a third row from the side closer to the connection portion 6.

第２絶縁スリット８ｂは、主に絶縁マージン側電極１２に設けられており、第１〜第３の列の蒸着電極をフィルム長さ方向に略等間隔に分割している。図２に示すように、第１の列の第２絶縁スリット８ｂは、第２、第３の列の第２絶縁スリット８ｂに対してフィルム長さ方向にずれている。具体的には、フィルム長さ方向における第２絶縁スリット８ｂ、８ｂ間の幅の略半分ずれている。したがって、第１絶縁スリット８ａと第２絶縁スリット８ｂとによって分割された略四角形の分割電極１３は、第１の列と、第２、３の列とでフィルム長さ方向にずれている。また、第２絶縁スリット８ｂは、一定間隔（複数本）毎に接続部側電極１１まで延設されている（図２における符号８ｂ１参照）。これは、接続部側電極１１をフィルム長さ方向で区画するためである。接続部側電極１１まで延設されている第２絶縁スリット８ｂ１、８ｂ１間の間隔は、例えば２０〜１００ｍｍである。 The second insulating slit 8b is mainly provided in the insulating margin side electrode 12, and divides the vapor deposition electrodes in the first to third rows into substantially equal intervals in the film length direction. As shown in FIG. 2, the second insulating slits 8b in the first row are displaced from the second insulating slits 8b in the second and third rows in the film length direction. Specifically, the widths of the second insulating slits 8b and 8b in the length direction of the film are shifted by approximately half the width. Therefore, the substantially quadrangular divided electrode 13 divided by the first insulating slit 8a and the second insulating slit 8b is displaced in the film length direction between the first row and the second and third rows. Further, the second insulating slits 8b are extended to the connection portion side electrode 11 at regular intervals (plurality) (see reference numeral 8b1 in FIG. 2). This is for partitioning the connection-side electrode 11 in the film length direction. The distance between the second insulating slits 8b1 and 8b1 extending to the connection-side electrode 11 is, for example, 20 to 100 mm.

全ての分割電極１３は、第１絶縁スリット８ａや第２絶縁スリット８ｂを分断するようにして設けられたヒューズ部１４によって隣接する分割電極１３や接続部側電極１１と接続されている。このヒューズ部１４は、定常時は電流の経路になる一方で、分割電極１３に絶縁破壊が生じた場合に溶断し、当該分割電極１３を他の分割電極１３や接続部側電極１１から切り離し、コンデンサ全体の絶縁を回復するためのものである。 All the divided electrodes 13 are connected to the adjacent divided electrodes 13 and the connecting portion side electrodes 11 by a fuse portion 14 provided so as to divide the first insulating slit 8a and the second insulating slit 8b. While the fuse portion 14 serves as a current path in a steady state, the fuse portion 14 is blown when a dielectric breakdown occurs in the divided electrode 13, and the divided electrode 13 is separated from other divided electrodes 13 and the connection side electrode 11. This is to restore the insulation of the entire capacitor.

ヒューズ部１４は、接続部側電極１１と第１の列に属する分割電極１３との間、第１の列に属する分割電極１３と第２の列に属する分割電極１３との間、第２の列に属する分割電極１３と第３の列に属する分割電極１３との間、第３の列に属する分割電極１３、１３同士の間に設けられている。第１の列に属する分割電極１３、１３同士の間と、第２の列に属する分割電極１３、１３同士の間とには設けられていない。またヒューズ部１４は、１つの分割電極１３に対して３つ接続されている。第１の列の１つの分割電極１３を例に挙げると、接続部６側において、接続部側電極１１と１つのヒューズ部１４で接続され、絶縁マージン７側において、第２の列の２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続されている。第２の列の１つの分割電極１３を例に挙げると、第１の列の２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続され、第３の列の１つの分割電極１３と１つのヒューズ部１４で接続されている。第３の列の１つの分割電極１３を例に挙げると、第２の列の１つの分割電極１３と１つのヒューズ部１４で接続され、フィルム長さ方向で隣接する２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続されている。なお、この状態は、最も接続部６側の分割電極１３（第１の列に属する分割電極）を除く他の分割電極１３（第２、３の列に属する分割電極）が、１つの分割電極１３につき３つの分割電極１３とヒューズ部１４を介してそれぞれ直接的に（ヒューズ部以外を介在させること無く）接続されているといえる。いずれのヒューズ部１４も、１つの分割電極１３のフィルム長さ方向における中心軸に対して左右対称となるように設けられている。なお、以下、必要に応じて、第１絶縁スリット８ａを分断するヒューズ部を縦ヒューズ部１４ａ、第２絶縁スリット８ｂを分断するヒューズ部を横ヒューズ部１４ｂと称す。 The fuse portion 14 is provided between the connection-side electrode 11 and the divided electrode 13 belonging to the first column, between the divided electrode 13 belonging to the first column and the divided electrode 13 belonging to the second column, and to the second portion. It is provided between the divided electrode 13 belonging to the column and the divided electrode 13 belonging to the third column, and between the divided electrodes 13, 13 belonging to the third column. It is not provided between the divided electrodes 13 and 13 belonging to the first column and between the divided electrodes 13 and 13 belonging to the second column. Further, three fuse parts 14 are connected to one divided electrode 13. Taking one split electrode 13 in the first row as an example, the connection portion 6 side is connected to the connection portion side electrode 11 by one fuse portion 14, and the insulation margin 7 side is connected to the two electrodes in the second row. The divided electrodes 13 and 13 are connected to each other by one fuse portion 14. Taking one divided electrode 13 in the second column as an example, the two divided electrodes 13 and 13 in the first column are connected to each other by one fuse portion 14, and one divided electrode 13 in the third column is connected. They are connected by one fuse section 14. Taking one divided electrode 13 in the third row as an example, two divided electrodes 13 and 13 connected to one divided electrode 13 in the second row by one fuse portion 14 and adjacent in the film length direction. And one fuse portion 14 respectively. In this state, the other divided electrodes 13 (divided electrodes belonging to the second and third columns) excluding the divided electrode 13 (divided electrodes belonging to the first column) closest to the connection portion 6 are one divided electrode. It can be said that each of 13 is directly connected (without interposing other than the fuse part) via the three divided electrodes 13 and the fuse part 14. Each of the fuse portions 14 is provided so as to be bilaterally symmetrical with respect to the central axis of one divided electrode 13 in the film length direction. Note that, hereinafter, the fuse portion that divides the first insulating slit 8a is referred to as a vertical fuse portion 14a, and the fuse portion that divides the second insulating slit 8b is referred to as a horizontal fuse portion 14b, as necessary.

上記構成の金属化フィルム２は、図２に示すように、ある任意の分割電極１３を基点分割電極Ｒとし、基点分割電極Ｒとヒューズ部１４を介して接続された分割電極１３を一次分割電極Ｒ１、Ｒ２、Ｒ３とし、一次分割電極Ｒ１と他のヒューズ部１４（基点分割電極Ｒと一次分割電極Ｒ１、Ｒ２、Ｒ３とを接続するヒューズ部１４とは異なるヒューズ部）を介して接続された分割電極１３を二次分割電極Ｒ１１、Ｒ１２、Ｒ２１、Ｒ２２、Ｒ３１、Ｒ３２としたとき、任意の二次分割電極から分割電極１３（接続部側電極１１を含まない）を通って基点分割電極Ｒに至る複数の経路のうち、ヒューズ部１４を２つだけ通る経路が１つとされ、他はヒューズ部１４を３つ以上通る経路とされている。 As shown in FIG. 2, in the metallized film 2 having the above-described configuration, an arbitrary divided electrode 13 is used as a base divided electrode R, and the divided electrode 13 connected to the base divided electrode R via a fuse portion 14 is a primary divided electrode. R1, R2, and R3 are connected via the primary divided electrode R1 and another fuse portion 14 (a fuse portion different from the fuse portion 14 that connects the base divided electrode R and the primary divided electrodes R1, R2, and R3). When the split electrode 13 is the secondary split electrodes R11, R12, R21, R22, R31, R32, the base split electrode R passes through the split electrode 13 (excluding the connection side electrode 11) from any secondary split electrode. Among the plurality of paths leading to, the number of paths passing through only two fuse portions 14 is one, and the other is the path passing through three or more fuse portions 14.

また、基点分割電極Ｒに接続されている３つのヒューズ部１４をそれぞれ第１、第２、第３のヒューズ部とし、基点分割電極Ｒと第１のヒューズ部１４を介して接続された一次分割電極Ｒ１と、この一次分割電極Ｒ１と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ１１、Ｒ１２とを第１の分割電極群とし、基点分割電極Ｒと第２のヒューズ部１４を介して接続された一次分割電極Ｒ２と、この一次分割電極Ｒ２と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ２１、Ｒ２２とを第２の分割電極群とし、基点分割電極Ｒと第３のヒューズ部１４を介して接続された一次分割電極Ｒ３と、この一次分割電極Ｒ３と他のヒューズ部１４を介して接続された２つの二次分割電極Ｒ３１、Ｒ３２とを第３の分割電極群としたとき、分割電極群間で分割電極１３の重複が生じていない。すなわち、いずれの分割電極１３も２つ以上の分割電極群に属していない。なお、第１の列の分割電極１３を基点分割電極Ｒとすると、３つのヒューズ部１４のうちの１つが接続部側電極１１と接続されているため、形成される分割電極群は２つである。この２つの分割電極群を第１、第２の分割電極群とすれば、分割電極群間で分割電極１３の重複は生じない。また、任意の二次分割電極から分割電極１３を通って基点分割電極Ｒに至る複数の経路のうち、ヒューズ部１４を２つだけ通る経路は１つである。 In addition, the three fuse parts 14 connected to the base point dividing electrode R are respectively referred to as first, second, and third fuse parts, and the primary division connected via the base point dividing electrode R and the first fuse part 14 is performed. The electrode R1 and the two secondary divided electrodes R11 and R12 connected to the primary divided electrode R1 via another fuse portion 14 are used as a first divided electrode group, and the base divided electrode R and the second fuse portion are used. A primary divided electrode R2 connected via 14 and two secondary divided electrodes R21, R22 connected to this primary divided electrode R2 via another fuse part 14 are used as a second divided electrode group, and a base point A primary divided electrode R3 connected to the divided electrode R via the third fuse portion 14 and two secondary divided electrodes R31 and R32 connected to the primary divided electrode R3 via another fuse portion 14 are provided. In the case of the third divided electrode group, the divided electrodes 13 do not overlap between the divided electrode groups. That is, none of the divided electrodes 13 belongs to two or more divided electrode groups. When the divided electrode 13 in the first column is the base divided electrode R, one of the three fuse parts 14 is connected to the connection part side electrode 11, so that two divided electrode groups are formed. is there. If the two divided electrode groups are the first and second divided electrode groups, the divided electrodes 13 do not overlap between the divided electrode groups. Further, of the plurality of paths from the arbitrary secondary divided electrode to the base point divided electrode R through the divided electrode 13, only one path passes through the fuse portion 14.

すなわち、どの分割電極１３を基点分割電極Ｒとしたとしても、分割電極群間において分割電極１３の重複が生じておらず、二次分割電極から分割電極１３を通って基点分割電極Ｒに至る複数の経路のうち、ヒューズ部１４を２つだけ通る経路は１つとされている。 That is, no matter which divided electrode 13 is used as the base divided electrode R, the divided electrodes 13 do not overlap with each other in the divided electrode groups, and a plurality of divided electrodes 13 extending from the divided divided electrode 13 to the base divided electrode R can be obtained. Only one of the two routes passing through the fuse portion 14 is set.

従って、上記構成の金属化フィルム２を用いて製造された金属化フィルムコンデンサ１では、分割電極１３に絶縁破壊が生じた際、以下のように動作する。まず、図３に示すように、分割電極１３に絶縁破壊Ｂが生じると、周囲の分割電極１３の電荷が、絶縁破壊が生じた分割電極１３に流れ込む。この際、絶縁破壊が生じた分割電極１３を基点分割電極Ｒとすると、例えば二次分割電極Ｒ３２から分割電極１３を通って基点分割電極Ｒに至る経路としては、図３の実線矢印や破線矢印で示すように複数形成されるが、ヒューズ部１４を２つだけ通る経路（実線矢印で示す経路）は１つだけであって、他の経路は３つ以上のヒューズ部１４を通る。ヒューズ部１４は分割電極１３に比べて幅が狭く抵抗が大きいため、電流はなるべくヒューズ部１４を避けて流れようとする。そのため、二次分割電極Ｒ３２からの電流は、複数の経路のうち、分割電極１３を通りつつヒューズ部１４を２つだけ通る経路（通過するヒューズ部１４の数が最少となる経路）を流れることとなり、電荷の分散が抑制される結果、所望のヒューズ部１４に十分な電流を流すことができ、ヒューズ部１４を確実に溶断（動作）させることができる。 Therefore, in the metallized film capacitor 1 manufactured by using the metallized film 2 having the above-described structure, when dielectric breakdown occurs in the divided electrodes 13, the metallized film capacitor 1 operates as follows. First, as shown in FIG. 3, when the dielectric breakdown B occurs in the divided electrodes 13, the charges of the surrounding divided electrodes 13 flow into the divided electrodes 13 in which the dielectric breakdown occurs. At this time, assuming that the divided electrode 13 in which the dielectric breakdown has occurred is the base-point divided electrode R, for example, a path from the secondary divided electrode R32 through the divided electrode 13 to the base-point divided electrode R is a solid arrow or a dashed arrow in FIG. Although a plurality of fuse portions 14 are formed as shown in FIG. 3, only one passage (a passage indicated by a solid arrow) passes through the fuse portion 14, and the other passages pass through three or more fuse portions 14. Since the width of the fuse portion 14 is narrower and the resistance thereof is larger than that of the divided electrode 13, the current tries to flow away from the fuse portion 14 as much as possible. Therefore, the current from the secondary divided electrode R32 may flow through a path that passes through only the two fuse parts 14 while passing through the divided electrode 13 (a path where the number of the fuse parts 14 that pass through is the minimum) among the plurality of paths. As a result of suppressing the charge dispersion, a sufficient current can be passed through the desired fuse portion 14, and the fuse portion 14 can be surely blown (operated).

次に、本発明の別の金属化フィルム２Ａについて説明する。図４に示すように、この金属化フィルム２Ａでは、蒸着電極４が６本の第１絶縁スリット８ａによってフィルム幅方向に分割されている。フィルム幅方向に６分割された蒸着電極４を、接続部６に近い側から第１の列、第２の列、第３の列、第４の列、第５の列、第６の列とすると、第１の列の分割電極１３に対して、第２、第３、第４の列の分割電極１３がフィルム長さ方向にずれている。ずれ幅は、１つの分割電極１３のフィルム長さ方向の幅の略半分である。第５、第６の列の分割電極１３は、第１の列の分割電極１３に対してずれていない。 Next, another metallized film 2A of the present invention will be described. As shown in FIG. 4, in this metallized film 2A, the vapor deposition electrode 4 is divided in the film width direction by the six first insulating slits 8a. The vapor deposition electrodes 4 divided into six in the film width direction are divided into first, second, third, fourth, fifth, and sixth columns from the side close to the connection portion 6. Then, the divided electrodes 13 in the second, third, and fourth rows are deviated from the divided electrodes 13 in the first row in the film length direction. The shift width is approximately half the width of one split electrode 13 in the film length direction. The divided electrodes 13 in the fifth and sixth columns are not displaced from the divided electrodes 13 in the first column.

ヒューズ部１４は、１つの分割電極１３に対して３つ接続されている。第１の列の１つの分割電極１３を例に挙げると、接続部６側において、接続部側電極１１と１つのヒューズ部１４で接続され、絶縁マージン７側において、第２の列の２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続されている。第２の列の１つの分割電極１３を例に挙げると、第１の列の２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続され、第３の列の１つの分割電極１３と１つのヒューズ部１４で接続されている。第３の列の１つの分割電極１３を例に挙げると、第２の列の１つの分割電極１３と１つのヒューズ部１４で接続され、フィルム長さ方向で隣接する１つの分割電極１３と１つのヒューズ部１４で接続され、第４の列の１つの分割電極１３と１つのヒューズ部１４で接続されている。第４の列の１つの分割電極１３を例に挙げると、第３の列の１つの分割電極１３と１つのヒューズ部１４で接続され、第５の列の２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続されている。第５の列の１つの分割電極１３を例に挙げると、第４の列の２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続され、第６の列の１つの分割電極１３と１つのヒューズ部１４で接続されている。第６の列の１つの分割電極１３を例に挙げると、第５の列の１つの分割電極１３と１つのヒューズ部１４で接続され、フィルム長さ方向で隣接する２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続されている。従って、第１、第２、第４、第５の列の分割電極１３には縦ヒューズ部１４ａのみが接続され、第３、第６の列の分割電極１３には、縦ヒューズ部１４ａに加えて横ヒューズ部１４ｂが接続されている。 Three fuse parts 14 are connected to one divided electrode 13. Taking one split electrode 13 in the first row as an example, the connection portion 6 side is connected to the connection portion side electrode 11 by one fuse portion 14, and the insulation margin 7 side is connected to the two electrodes in the second row. The divided electrodes 13 and 13 are connected to each other by one fuse portion 14. Taking one divided electrode 13 in the second column as an example, the two divided electrodes 13 and 13 in the first column are connected to each other by one fuse portion 14, and one divided electrode 13 in the third column is connected. They are connected by one fuse section 14. Taking one divided electrode 13 in the third row as an example, one divided electrode 13 in the second row and one divided electrode 13 connected by a fuse portion 14 and adjacent to each other in the film length direction are connected to each other. One fuse portion 14 is connected, and one divided electrode 13 in the fourth column is connected to one fuse portion 14. Taking the one divided electrode 13 of the fourth row as an example, one divided electrode 13 of the third row is connected to one divided electrode 13 by one fuse portion 14, and two divided electrodes 13 and 13 of the fifth row are respectively connected. They are connected by one fuse section 14. Taking the one divided electrode 13 of the fifth column as an example, the two divided electrodes 13 and 13 of the fourth column are respectively connected by one fuse portion 14, and one divided electrode 13 of the sixth column is connected. They are connected by one fuse section 14. Taking one divided electrode 13 in the sixth row as an example, two divided electrodes 13 and 13 connected to one divided electrode 13 in the fifth row by one fuse portion 14 and adjacent in the film length direction. And one fuse portion 14 respectively. Therefore, only the vertical fuse portion 14a is connected to the divided electrodes 13 of the first, second, fourth, and fifth columns, and the divided electrodes 13 of the third and sixth columns are connected to the vertical fuse portion 14a. And the horizontal fuse portion 14b is connected.

上記構成の金属化フィルム２Ａも、どの分割電極１３を基点分割電極Ｒとしたとしても、分割電極群間において分割電極１３の重複が生じておらず、さらに二次分割電極から分割電極１３を通って基点分割電極Ｒに至る複数の経路のうち、ヒューズ部１４を２つだけ通る経路は１つとされている。そのため、この金属化フィルム２Ａを用いた金属化フィルムコンデンサでは、上記金属化フィルムコンデンサ１と同様の作用効果を奏する。 In the metalized film 2A having the above structure, no matter which divided electrode 13 is used as the base divided electrode R, the divided electrodes 13 do not overlap each other between the divided electrode groups, and the divided electrode 13 passes through the divided electrode 13 from the secondary divided electrode. Of the plurality of paths leading to the base point split electrode R, only one path passes through the fuse portion 14. Therefore, in the metallized film capacitor using this metallized film 2A, the same effect as the metallized film capacitor 1 can be obtained.

図５は、本発明のさらに別の金属化フィルムである。図５に示すように、この金属化フィルム２Ｂでは、分割電極１３が一部、略三角形とされている。具体的に説明すると、フィルム長さ方向に平行な第１絶縁スリット８ａと、フィルム幅方向に平行な第２絶縁スリット８ｂに加えて、第１絶縁スリット８ａと第２絶縁スリット８ｂとの交点を結ぶようにして第３絶縁スリット８ｃが設けられており、絶縁マージン側電極１２が略三角形に分割されている。ただ、最も絶縁マージン７側に位置する列には第３絶縁スリット８ｃは設けられておらず、この列の分割電極１３については略四角形である。略三角形の分割電極１３には、略三角形を構成する辺にそれぞれ１つずつヒューズ部１４（縦ヒューズ部１４ａ、横ヒューズ部１４ｂ、斜めヒューズ部１４ｃ（第３絶縁スリット８ｃを分断するようにして設けられたヒューズ部））が接続されており、隣接する分割電極１３や接続部側電極１１とこれらヒューズ部１４を介して接続している。略四角形の分割電極１３については、フィルム幅方向で隣接する略三角形の分割電極１３と１つのヒューズ部１４で接続されているとともに、フィルム長さ方向で隣接する２つの分割電極１３、１３とそれぞれ１つのヒューズ部１４で接続されている。従って、略三角形の分割電極１３も略四角形の分割電極１３も、それぞれ３つのヒューズ部１４が接続されているといえる。 FIG. 5 is yet another metallized film of the present invention. As shown in FIG. 5, in this metallized film 2B, the divided electrodes 13 are partially formed in a substantially triangular shape. Specifically, in addition to the first insulating slit 8a parallel to the film length direction and the second insulating slit 8b parallel to the film width direction, the intersection of the first insulating slit 8a and the second insulating slit 8b is defined. A third insulating slit 8c is provided so as to be connected, and the insulating margin side electrode 12 is divided into a substantially triangular shape. However, the third insulating slit 8c is not provided in the column located closest to the insulating margin 7, and the divided electrodes 13 in this column are substantially rectangular. In the split electrode 13 having a substantially triangular shape, one fuse portion 14 (vertical fuse portion 14a, horizontal fuse portion 14b, diagonal fuse portion 14c (third insulating slit 8c is divided so as to be divided into the sides forming the substantially triangular shape. The provided fuse portion)) is connected, and is connected to the adjacent divided electrode 13 or the connecting portion side electrode 11 via these fuse portions 14. The substantially quadrangular divided electrode 13 is connected to the substantially triangular divided electrode 13 adjacent in the film width direction by one fuse portion 14, and is also connected to the two divided electrodes 13 and 13 adjacent in the film length direction, respectively. They are connected by one fuse section 14. Therefore, it can be said that each of the substantially triangular divided electrode 13 and the substantially quadrangular divided electrode 13 is connected to the three fuse portions 14.

上記構成の金属化フィルム２Ｂについても、どの分割電極１３を基点分割電極Ｒとしたとしても分割電極群間において分割電極１３の重複が生じておらず、さらに二次分割電極から分割電極１３を通って基点分割電極Ｒに至る複数の経路のうち、ヒューズ部１４を２つだけ通る経路は１つとされている。そのため、この金属化フィルム２Ｂを用いた金属化フィルムコンデンサについても、上記金属化フィルムコンデンサ１と同様の作用効果を奏する。 In the metalized film 2B having the above structure, no division electrode 13 is overlapped between the division electrode groups regardless of which division electrode 13 is used as the base division electrode R, and the division electrode 13 is passed from the secondary division electrode. Of the plurality of paths leading to the base point split electrode R, only one path passes through the fuse portion 14. Therefore, the metallized film capacitor using the metallized film 2B also has the same operation and effect as the metallized film capacitor 1.

本発明の金属化フィルムコンデンサ１は、図１に示すように、上記構成の複数枚の金属化フィルム２（２Ａ、２Ｂ）を、絶縁マージン７の位置が上下で互い違いとなるように、且つ蒸着電極４、４間に誘電体フィルム３が介在するようにして複数重ね合わせるとともに、フィルム幅方向の両端部にそれぞれメタリコン電極５、５を形成することで製造される。なお、図１は概略図であって誘電体フィルム３や蒸着電極４の厚みが誇張されている。実際の厚みは、誘電体フィルム３が例えば２〜８μｍ、蒸着電極４が５０〜５００Åと極めて薄い。なお、誘電体フィルム３のフィルム幅方向の長さは２５〜１５０ｍｍである。図２、４、５に示す金属化フィルムはフィルム長さ方向に連続している。 As shown in FIG. 1, the metallized film capacitor 1 of the present invention is formed by vapor-depositing a plurality of metallized films 2 (2A, 2B) having the above-described structure so that the positions of the insulation margins 7 are vertically offset. It is manufactured by stacking a plurality of electrodes 4 and 4 with the dielectric film 3 interposed therebetween and forming metallikon electrodes 5 and 5 at both ends in the film width direction. Note that FIG. 1 is a schematic diagram, and the thicknesses of the dielectric film 3 and the vapor deposition electrode 4 are exaggerated. As for the actual thickness, the dielectric film 3 is extremely thin, for example, 2 to 8 μm, and the vapor deposition electrode 4 is 50 to 500 Å. The length of the dielectric film 3 in the film width direction is 25 to 150 mm. The metallized films shown in FIGS. 2, 4, and 5 are continuous in the film length direction.

以上に、この発明の具体的な実施形態について説明したが、この発明は上記実施形態に限定されるものではなく、この発明の範囲内で種々変更して実施することが可能である。例えば、上記実施形態では、接続部側電極１１と分割電極１３との間、隣接する分割電極１３、１３同士の間に１つのヒューズ部１４が設けられていたが、２つ以上のヒューズ部１４を設けても良い。すなわち、１つの接続部側電極１１と１つの分割電極１３との間に２以上のヒューズ部１４を設けても良いし、１つの分割電極１３とそれに隣接する１つの分割電極１３との間に２つ以上のヒューズ部１４を設けても良い。また、列の数は３以上であれば適宜変更可能である。また接続部６としては、分割電極１３よりも肉厚の蒸着電極を用いる、いわゆるヘビーエッジを採用しても良い。金属化フィルム２、２を複数重ね合わせる方法としては単に積層する他、巻回によって重ね合わせても良い。また、１枚の誘電体フィルム３の両面に蒸着電極４を形成した両面金属化フィルムと誘電体フィルム３とを重ね合わせてコンデンサを形成しても良い。さらに、必ずしも同じ蒸着パターンの金属化フィルムを用いる必要は無く、異なる蒸着パターンの金属化フィルムを組み合わせてコンデンサを形成しても良い。また、接続部側電極１１は必ずしも設ける必要は無く、接続部６を除く蒸着部分を絶縁スリットによって分割しても良い。 The specific embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention. For example, in the above-described embodiment, one fuse portion 14 is provided between the connection-side electrode 11 and the divided electrode 13 and between the adjacent divided electrodes 13 and 13, but two or more fuse portions 14 are provided. May be provided. That is, two or more fuses 14 may be provided between one connection-side electrode 11 and one divided electrode 13, or between one divided electrode 13 and one divided electrode 13 adjacent thereto. You may provide two or more fuse parts 14. Further, the number of columns can be appropriately changed as long as it is 3 or more. Further, as the connecting portion 6, a so-called heavy edge in which a vapor deposition electrode having a thickness larger than that of the divided electrode 13 is used may be adopted. As a method for superposing a plurality of metallized films 2 and 2, the metalized films 2 and 2 may be simply laminated or may be wound to be superposed. Alternatively, a double-sided metallized film having vapor deposition electrodes 4 formed on both surfaces of one dielectric film 3 and the dielectric film 3 may be overlapped to form a capacitor. Further, it is not always necessary to use the metallized films having the same vapor deposition pattern, and the metallized films having different vapor deposition patterns may be combined to form the capacitor. Further, the connecting portion side electrode 11 does not necessarily have to be provided, and the vapor deposition portion excluding the connecting portion 6 may be divided by an insulating slit.

１金属化フィルムコンデンサ
２、２Ａ、２Ｂ金属化フィルム
３誘電体フィルム
４蒸着電極
５メタリコン電極
６接続部
７絶縁マージン
８絶縁スリット
８ａ第１絶縁スリット
８ｂ第２絶縁スリット
８ｂ１接続部側まで延設された第２絶縁スリット
８ｃ第３絶縁スリット
１１接続部側電極
１２絶縁マージン側電極
１３分割電極
１４ヒューズ部
１４ａ縦ヒューズ部
１４ｂ横ヒューズ部
１４ｃ斜めヒューズ部
Ｒ基点分割電極
Ｒ１第１の分割電極群の一次分割電極
Ｒ１１、Ｒ１２第１の分割電極群の二次分割電極
Ｒ２第２の分割電極群の一次分割電極
Ｒ２１、Ｒ２２第２の分割電極群の二次分割電極
Ｒ３第３の分割電極群の一次分割電極
Ｒ３１、Ｒ３２第３の分割電極群の二次分割電極
Ｂ絶縁が破壊した部分 1 Metallized film capacitor 2, 2A, 2B Metallized film 3 Dielectric film 4 Vapor deposition electrode 5 Metallicon electrode 6 Connection part 7 Insulation margin 8 Insulation slit 8a First insulation slit 8b Second insulation slit 8b1 It is extended to the connection part side. Second insulating slit 8c Third insulating slit 11 Connection portion side electrode 12 Insulation margin side electrode 13 Split electrode 14 Fuse portion 14a Vertical fuse portion 14b Horizontal fuse portion 14c Oblique fuse portion R Base point split electrode R1 of the first split electrode group Primary split electrodes R11, R12 Secondary split electrode R2 of the first split electrode group Primary split electrodes R21, R22 of the second split electrode group Secondary split electrode R3 of the second split electrode group R3 of the third split electrode group Primary split electrodes R31, R32 Secondary split electrode B of the third split electrode group Part where insulation is broken

Claims

A metallized film formed by forming a vapor deposition electrode on a dielectric film,
The vapor deposition electrode includes a connecting portion provided at one end in the width direction of the dielectric film, a plurality of substantially rectangular divided electrodes divided by an insulating slit, and a fuse portion connecting adjacent divided electrodes to each other. And
The divided electrodes are arranged in at least three rows in the width direction of the dielectric film,
When the first row, the second row, and the third row are arranged in order from the row of the divided electrodes on the side of the connection portion in the width direction of the dielectric film,
No fuse portion is provided between the divided electrodes belonging to the first column and between the divided electrodes belonging to the second column,
The fuse portion is provided between the divided electrodes belonging to the third column,
Further, one divided electrode belonging to the first column is connected to two divided electrodes belonging to the second column via a fuse part,
One divided electrode belonging to the second column is connected to two divided electrodes belonging to the first column via a fuse part, and one divided electrode belonging to the third column is connected to a fuse part. Connected, metallized film.

A metallized film obtained by forming vapor deposition electrodes on a dielectric film,
The vapor deposition electrode has a connecting portion provided at one end in the width direction of the dielectric film, a plurality of divided electrodes divided by an insulating slit, and a fuse portion connecting adjacent divided electrodes to each other,
Other split electrodes except the split electrode closest to the connection portion are connected to the three split electrodes for each split electrode via the fuse portion, and the following relationship holds for all split electrodes. the film.
(1) An arbitrary split electrode is used as a base split electrode,
The split electrode connected via the base point split electrode and the fuse section is used as the primary split electrode,
When the divided electrode connected to the primary divided electrode through another fuse part is used as the secondary divided electrode, two or more paths from any secondary divided electrode to the base divided electrode through the divided electrode are formed. One path is a path that passes only two fuse portions, and the other path is a path that passes three or more fuse portions.

A metallized film obtained by forming vapor deposition electrodes on a dielectric film,
The vapor deposition electrode is provided with a plurality of substantially quadrangular divided electrodes divided by insulating slits and a fuse portion that connects adjacent divided electrodes to each other, and the following relationship is established in all the divided electrodes. the film.
(1) An arbitrary split electrode is used as a base split electrode,
The split electrode connected to the base split electrode via the fuse section is used as the primary split electrode,
When the divided electrode connected to the primary divided electrode through another fuse part is used as the secondary divided electrode, two or more paths from any secondary divided electrode to the base divided electrode through the divided electrode are formed. One path is a path that passes only two fuse sections, and the other path is a path that passes three or more fuse sections.

A metallized film formed by forming a vapor deposition electrode on a dielectric film,
The vapor deposition electrode has a connecting portion provided at one end in the width direction of the dielectric film, a plurality of divided electrodes divided by an insulating slit, and a fuse portion connecting adjacent divided electrodes to each other,
The divided electrodes other than the divided electrode closest to the connection portion are connected to the three divided electrodes for each divided electrode through the fuse portion, and the metallized film is formed in the divided electrodes having the following relationships. ..
(2) An arbitrary split electrode is used as a base split electrode,
A primary split electrode connected to the base split electrode via the first fuse part and two secondary split electrodes connected to the primary split electrode via another fuse part are used as a first split electrode group. ,
A primary split electrode connected to the base split electrode via the second fuse part, and two secondary split electrodes connected to this primary split electrode via another fuse part are used as a second split electrode group. ,
A primary split electrode connected to the base split electrode via a third fuse portion, and two secondary split electrodes connected to the primary split electrode via another fuse portion are referred to as a third split electrode group. At this time, there is no overlap of the divided electrodes between the divided electrode groups.

A metallized film obtained by forming vapor deposition electrodes on a dielectric film,
The metallized film in which the vapor deposition electrode includes a plurality of substantially quadrangular divided electrodes divided by insulating slits and a fuse part that connects adjacent divided electrodes to each other, and is formed in the divided electrodes having the following relationships. ..
(2) An arbitrary split electrode is used as a base split electrode,
A primary split electrode connected to the base split electrode via the first fuse part and two secondary split electrodes connected to the primary split electrode via another fuse part are used as a first split electrode group. ,
A primary split electrode connected to the base split electrode via the second fuse part, and two secondary split electrodes connected to this primary split electrode via another fuse part are used as a second split electrode group. ,
A primary split electrode connected to the base split electrode via a third fuse portion, and two secondary split electrodes connected to the primary split electrode via another fuse portion are referred to as a third split electrode group. Then, the divided electrodes do not overlap between the divided electrode groups.

A metallized film capacitor using the metallized film according to claim 1.