JP6793309B2

JP6793309B2 - Capacitors and how to manufacture capacitors

Info

Publication number: JP6793309B2
Application number: JP2016166573A
Authority: JP
Inventors: 武志今村; 三浦　寿久; 寿久三浦
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2016-08-29
Filing date: 2016-08-29
Publication date: 2020-12-02
Anticipated expiration: 2036-08-29
Also published as: JP2018037433A

Description

本発明は、フィルムコンデンサ等のコンデンサ、および、かかるコンデンサの製造方法に関する。 The present invention relates to a capacitor such as a film capacitor and a method for manufacturing such a capacitor.

金属化フィルムを積層または巻回してなるコンデンサ素子の両端面にメタリコン電極を形成し、それぞれのメタリコン電極にバスバーを接続し、一対のバスバーの一部を、絶縁板を間に挟んで重ね合わせ、バスバーが有するインダンクタンス成分であるＥＳＬ（等価直流インダクタンス）を低減させるようにしたケースモールド型コンデンサが、特許文献１に記載されている。 Metallicon electrodes are formed on both end faces of a capacitor element formed by laminating or winding a metallized film, a bus bar is connected to each metallikon electrode, and a part of the pair of bus bars is overlapped with an insulating plate in between. Patent Document 1 describes a case-molded capacitor that reduces ESL (equivalent direct current inductance), which is an inductance component of a bus bar.

特許文献１のケースモールド型コンデンサでは、一対のバスバーと対向する絶縁板の双方の表面に突起部が設けられ、この突起部をバスバーの重複部に設けられた穴部に嵌合させることにより、一対のバスバーの外部接続端子部の相互の位置が固定されるとともに、一対のバスバーと絶縁板との位置も固定される。 In the case-molded capacitor of Patent Document 1, protrusions are provided on both surfaces of the pair of busbars and the insulating plates facing each other, and the protrusions are fitted into the holes provided in the overlapping portions of the busbars. The positions of the external connection terminals of the pair of bus bars are fixed, and the positions of the pair of bus bars and the insulating plate are also fixed.

特開２０１０−２５１４００号公報JP-A-2010-251400

上記特許文献１のケースモールド型コンデンサでは、絶縁板の表面と直交する方向、即ち一対のバスバーの重なり方向に、絶縁板に対する各バスバーのがたつきが生じやすい。このために、上記重なり方向におけるバスバー、特に外部接続端子部の寸法精度を確保しにくくなることが懸念される。 In the case-molded capacitor of Patent Document 1, rattling of each bus bar with respect to the insulating plate tends to occur in the direction orthogonal to the surface of the insulating plate, that is, in the overlapping direction of the pair of bus bars. For this reason, there is a concern that it will be difficult to secure the dimensional accuracy of the bus bar, particularly the external connection terminal portion, in the overlapping direction.

かかる課題に鑑み、本発明は、バスバーの寸法精度が向上し得るコンデンサを提供することを目的とする。 In view of such a problem, an object of the present invention is to provide a capacitor capable of improving the dimensional accuracy of a bus bar.

本発明の第１の態様に係るコンデンサは、コンデンサ素子と、前記コンデンサ素子に接続される第１のバスバーおよび第２のバスバーと、前記第１のバスバーと前記第２のバスバーとにそれぞれが含まれ、互いに重なり合う第１の重合部および第２の重合部と、前記第１の重合部と前記第２の重合部との間を絶縁するための絶縁板と、前記第１の重合部を貫通する第１の穴部と、前記第２の重合部を貫通する第２の穴部と、前記絶縁板に設けられ、前記第１の穴部に通される第１の突起部と、前記絶縁板に設けられ、前記第２の穴部に通される第２の突起部と、を備える。ここで、前記第１の重合部は、前記絶縁板側に潰されてなる前記第１の穴部より外径の大きな前記第１の突起部の先端部と前記絶縁板とで挟み込まれることにより前記絶縁板に固定され、前記第２の重合部は、前記絶縁板側に潰されてなる前記第２の穴部より外径の大きな前記第２の突起部の先端部と前記絶縁板とで挟み込まれることにより前記絶縁板に固定される。 The capacitor according to the first aspect of the present invention includes a capacitor element, a first bus bar and a second bus bar connected to the capacitor element, and the first bus bar and the second bus bar, respectively. It penetrates the first polymerized portion and the second polymerized portion that overlap each other, the insulating plate for insulating between the first polymerized portion and the second polymerized portion, and the first polymerized portion. A first hole portion to be formed, a second hole portion penetrating the second overlapping portion, a first protrusion portion provided on the insulating plate and passed through the first hole portion, and the insulation. It is provided with a second protrusion provided on the plate and passed through the second hole. Here, the first polymerization portion is sandwiched between the tip portion of the first protrusion portion having a larger outer diameter than the first hole portion crushed toward the insulating plate side and the insulating plate. The second polymerized portion fixed to the insulating plate is formed by the tip portion of the second protruding portion having a larger outer diameter than the second hole portion formed by being crushed toward the insulating plate and the insulating plate. It is fixed to the insulating plate by being sandwiched.

本発明の第２の態様は、コンデンサ素子と、前記コンデンサ素子に接続される第１のバスバーおよび第２のバスバーと、前記第１のバスバーと前記第２のバスバーとにそれぞれが含まれ、互いに重なり合う第１の重合部および第２の重合部と、前記第１の重合部と前記第２の重合部との間を絶縁するための絶縁板と、を備えるコンデンサの製造方法に関する。本態様に係るコンデンサの製造方法は、前記第１の重合部を貫通する第１の穴部に、前記絶縁板に設けられた第１の突起部を通すとともに、前記第２の重合部を貫通する第２の穴部に、前記絶縁板に設けられた第２の突起部を通し、第１の熱カシメ用治具によって、前記第１の突起部の先端部を、前記第１の穴部より外径が大きくなるよう前記絶縁板側に押し潰し、潰された前記第１の突起部の先端部と前記絶縁板とで前記第１の重合部を挟み込むことにより、前記第１の重合部を前記絶縁板に固定させ、第２の熱カシメ用治具によって、前記第２の突起部の先端部を、前記第２の穴部より外径が大きくなるよう前記絶縁板側に押し潰し、潰された前記第２の突起部の先端部と前記絶縁板とで前記第２の重合部を挟み込むことにより、前記第２の重合部を前記絶縁板に固定させる。 A second aspect of the present invention includes a capacitor element, a first bus bar and a second bus bar connected to the capacitor element, and the first bus bar and the second bus bar, respectively. The present invention relates to a method for manufacturing a capacitor including an overlapping first polymerized portion and a second polymerized portion, and an insulating plate for insulating between the first polymerized portion and the second polymerized portion. In the method for manufacturing a capacitor according to this aspect, a first protrusion provided on the insulating plate is passed through a first hole portion penetrating the first polymerization portion, and the second polymerization portion is penetrated. A second protrusion provided on the insulating plate is passed through the second hole to be formed, and the tip of the first protrusion is pulled by a first thermal caulking jig to the first hole. The first polymerized portion is crushed toward the insulating plate so that the outer diameter becomes larger, and the first polymerized portion is sandwiched between the tip of the crushed first protruding portion and the insulating plate. Is fixed to the insulating plate, and the tip of the second protrusion is crushed toward the insulating plate by a second thermal caulking jig so that the outer diameter is larger than that of the second hole. The second polymerized portion is fixed to the insulating plate by sandwiching the second polymerized portion between the tip end portion of the crushed second protruding portion and the insulating plate.

本発明によれば、バスバーの寸法精度が向上し得るコンデンサを提供できる。 According to the present invention, it is possible to provide a capacitor capable of improving the dimensional accuracy of the bus bar.

本発明の効果ないし意義は、以下に示す実施の形態の説明により更に明らかとなろう。ただし、以下に示す実施の形態は、あくまでも、本発明を実施化する際の一つの例示であって、本発明は、以下の実施の形態に記載されたものに何ら制限されるものではない。 The effects or significance of the present invention will be further clarified by the description of the embodiments shown below. However, the embodiments shown below are merely examples when the present invention is put into practice, and the present invention is not limited to those described in the following embodiments.

図１（ａ）は、実施の形態に係る、フィルムコンデンサの正面斜視図であり、図１（ｂ）は、実施の形態に係る、コンデンサユニットがケースに収容される前の状態を示す、フィルムコンデンサの分解斜視図である。FIG. 1A is a front perspective view of the film capacitor according to the embodiment, and FIG. 1B is a film showing the state before the capacitor unit is housed in the case according to the embodiment. It is an exploded perspective view of a capacitor. 図２は、実施の形態に係る、コンデンサユニットの分解斜視図である。FIG. 2 is an exploded perspective view of the capacitor unit according to the embodiment. 図３（ａ）および（ｂ）は、それぞれ、実施の形態に係る、絶縁板の平面図および右側面図である。3A and 3B are a plan view and a right side view of the insulating plate according to the embodiment, respectively. 図４（ａ）は、実施の形態に係る、正面中央の位置で前後に切断したコンデンサユニットの側面断面図であり、図４（ｂ）は、実施の形態に係る、前側嵌合ボスと前側嵌合穴との嵌合部分および後側嵌合ボスと後側嵌合穴との嵌合部分の構成を示すバスバーユニットの要部の断面図である。FIG. 4A is a side sectional view of the capacitor unit cut back and forth at the position of the center of the front according to the embodiment, and FIG. 4B shows the front fitting boss and the front side according to the embodiment. It is sectional drawing of the main part of the bus bar unit which shows the structure of the fitting part with a fitting hole and the fitting part with a rear side fitting boss and a rear side fitting hole. 図５（ａ）ないし（ｃ）は、実施の形態に係る、バスバーユニットの組立手順について説明するための図である。5 (a) to 5 (c) are diagrams for explaining an assembly procedure of the bus bar unit according to the embodiment. 図６は、変更例１に係る、バスバーユニットの要部の正面図である。FIG. 6 is a front view of a main part of the bus bar unit according to the first modification. 図７（ａ）および（ｂ）は、それぞれ、変更例２および変更例３に係る、前側嵌合ボスと前側嵌合穴との嵌合部分および後側嵌合ボスと後側嵌合穴との嵌合部分の構成を示すバスバーユニットの要部の断面図である。7 (a) and 7 (b) show the fitting portion between the front fitting boss and the front fitting hole and the rear fitting boss and the rear fitting hole according to the second and third modifications, respectively. It is sectional drawing of the main part of the bus bar unit which shows the structure of the fitting part of.

以下、本発明のコンデンサの一実施形態であるフィルムコンデンサ１について図面を参照して説明する。便宜上、各図には、適宜、前後、左右および上下の方向が付記されている。なお、図示の方向は、あくまでフィルムコンデンサ１の相対的な方向を示すものであり、絶対的な方向を示すものではない。 Hereinafter, the film capacitor 1, which is an embodiment of the capacitor of the present invention, will be described with reference to the drawings. For convenience, each figure is appropriately marked with front-back, left-right, and up-down directions. The direction shown is only a relative direction of the film capacitor 1 and does not indicate an absolute direction.

本実施の形態において、フィルムコンデンサ１が、特許請求の範囲に記載の「コンデンサ」に対応する。また、前バスバー１００が、特許請求の範囲に記載の「第１のバスバー」に対応する。さらに、前側重合部１３０が、特許請求の範囲に記載の「第１の重合部」に対応する。さらに、前側挿通穴１３１が、特許請求の範囲に記載の「第１の穴部」に対応する。さらに、前側嵌合穴１３２が、特許請求の範囲に記載の「第３の穴部」に対応する。さらに、後バスバー２００が、特許請求の範囲に記載の「第２のバスバー」に対応する。さらに、後側重合部２３０が、特許請求の範囲に記載の「第２の重合部」に対応する。さらに、後側挿通穴２３１が、特許請求の範囲に記載の「第２の穴部」に対応する。さらに、後側嵌合穴２３２が、特許請求の範囲に記載の「第４の穴部」に対応する。さらに、前側カシメボス３１１が、特許請求の範囲に記載の「第１の突起部」に対応する。さらに、前側嵌合ボス３１２が、特許請求の範囲に記載の「第３の突起部」に対応する。さらに、前側クラッシュリブ３１３が、特許請求の範囲に記載の「第１のリブ」に対応する。さらに、後側カシメボス３２１が、特許請求の範囲に記載の「第２の突起部」に対応する。さらに、後側嵌合ボス３２２が、特許請求の範囲に記載の「第４の突起部」に対応する。さらに、後側クラッシュリブ３２３が、特許請求の範囲に記載の「第２のリブ」に対応する。さらに、前側熱カシメ用治具４０１が、特許請求の範囲に記載の「第１の熱カシメ用治具」に対応する。さらに、後側熱カシメ用治具４０２が、特許請求の範囲に記載の「第２の熱カシメ用治具」に対応する。 In the present embodiment, the film capacitor 1 corresponds to the "capacitor" described in the claims. Further, the front bus bar 100 corresponds to the "first bus bar" described in the claims. Further, the front polymerization section 130 corresponds to the "first polymerization section" described in the claims. Further, the front insertion hole 131 corresponds to the "first hole portion" described in the claims. Further, the front fitting hole 132 corresponds to the "third hole portion" described in the claims. Further, the rear bus bar 200 corresponds to the "second bus bar" described in the claims. Further, the rear polymerization section 230 corresponds to the "second polymerization section" described in the claims. Further, the rear insertion hole 231 corresponds to the "second hole portion" described in the claims. Further, the rear fitting hole 232 corresponds to the "fourth hole portion" described in the claims. Further, the front caulking boss 311 corresponds to the "first protrusion" described in the claims. Further, the front fitting boss 312 corresponds to the "third protrusion" described in the claims. Further, the front crash rib 313 corresponds to the "first rib" described in the claims. Further, the rear caulking boss 321 corresponds to the "second protrusion" described in the claims. Further, the rear fitting boss 322 corresponds to the "fourth protrusion" described in the claims. Further, the rear crash rib 323 corresponds to the "second rib" described in the claims. Further, the front heat caulking jig 401 corresponds to the "first heat caulking jig" described in the claims. Further, the rear heat caulking jig 402 corresponds to the "second heat caulking jig" described in the claims.

ただし、上記記載は、あくまで、特許請求の範囲の構成と実施形態の構成とを対応付けることを目的とするものであって、上記対応付けによって特許請求の範囲に記載の発明が実施形態の構成に何ら限定されるものではない。 However, the above description is only for the purpose of associating the configuration of the claims with the configuration of the embodiment, and the invention described in the scope of claims by the above association becomes the configuration of the embodiment. It is not limited in any way.

図１（ａ）は、本実施の形態に係る、フィルムコンデンサ１の正面斜視図であり、図１（ｂ）は、本実施の形態に係る、コンデンサユニット２がケース３に収容される前の状態を示す、フィルムコンデンサ１の分解斜視図である。図２は、本実施の形態に係る、コンデンサユニット２の分解斜視図である。図３（ａ）および（ｂ）は、それぞれ、本実施の形態に係る、絶縁板３００の平面図および右側面図である。図４（ａ）は、本実施の形態に係る、正面中央の位置で前後に切断したコンデンサユニット２の側面断面図であり、図４（ｂ）は、本実施の形態に係る、前側嵌合ボス３１２と前側嵌合穴１３２との嵌合部分および後側嵌合ボス３２２と後側嵌合穴２３２との嵌合部分の構成を示すバスバーユニット２０の要部の断面図である。なお、図１（ａ）において、便宜上、充填樹脂４は、一部分が斜線で描かれており、残る部分が透明に描かれている。 FIG. 1A is a front perspective view of the film capacitor 1 according to the present embodiment, and FIG. 1B is a front perspective view of the film capacitor 1 according to the present embodiment before the capacitor unit 2 according to the present embodiment is housed in the case 3. It is an exploded perspective view of the film capacitor 1 which shows the state. FIG. 2 is an exploded perspective view of the capacitor unit 2 according to the present embodiment. 3A and 3B are a plan view and a right side view of the insulating plate 300 according to the present embodiment, respectively. FIG. 4A is a side sectional view of the capacitor unit 2 cut back and forth at the position of the center of the front according to the present embodiment, and FIG. 4B is a front side fitting according to the present embodiment. It is sectional drawing of the main part of the bus bar unit 20 which shows the structure of the fitting part of the boss 312 and the front fitting hole 132, and the fitting part of the rear fitting boss 322 and the rear fitting hole 232. In FIG. 1A, for convenience, a part of the filling resin 4 is drawn with diagonal lines, and the remaining part is drawn transparently.

フィルムコンデンサ１は、コンデンサユニット２と、ケース３と、充填樹脂４とを備える。コンデンサユニット２は、コンデンサ素子１０と、コンデンサ素子１０から電気を引き出すバスバーユニット２０とで構成される。ケース３は、ほぼ直方体の箱状を有し、上面が開口する。ケース３は、たとえば、ポリフェニレンサルファイド（ＰＰＳ）等の樹脂により形成され、コンデンサユニット２を収容する。充填樹脂４は、熱硬化性樹脂からなり、溶融状態でケース３内に注入され、ケース３が加熱されることにより硬化する。充填樹脂４は、コンデンサユニット２におけるコンデンサ素子１０とバスバーユニット２０の一部を覆い、これらを湿気や衝撃から保護する。 The film capacitor 1 includes a capacitor unit 2, a case 3, and a filling resin 4. The capacitor unit 2 includes a capacitor element 10 and a bus bar unit 20 that draws electricity from the capacitor element 10. The case 3 has a substantially rectangular parallelepiped box shape, and the upper surface is open. The case 3 is formed of, for example, a resin such as polyphenylene sulfide (PPS) and houses the capacitor unit 2. The filling resin 4 is made of a thermosetting resin, is injected into the case 3 in a molten state, and is cured by heating the case 3. The filling resin 4 covers a part of the capacitor element 10 and the bus bar unit 20 in the capacitor unit 2 and protects them from moisture and impact.

次に、コンデンサユニット２の構成ついて、詳細に説明する。 Next, the configuration of the capacitor unit 2 will be described in detail.

コンデンサ素子１０は、誘電体フィルム上にアルミニウムを蒸着させた２枚の金属化フィルムを重ね、重ねた金属化フィルムを巻回または積層し、扁平状に押圧することにより形成される。コンデンサ素子１０には、前側の端面に、亜鉛等の金属の吹付けにより前側端面電極１１が形成され、後側の端面に、同じく亜鉛等の金属の吹付けにより後側端面電極１２が形成される。コンデンサユニット２は、コンデンサ素子１０の両端面が前後方向を向く状態でケース３内に収容される。なお、本実施の形態のコンデンサ素子１０は、誘電体フィルム上にアルミニウムを蒸着させた金属化フィルムにより形成されたが、これ以外にも、亜鉛、マグネシウム等の他の金属を蒸着させた金属化フィルムにより形成されてもよい。あるいは、コンデンサ素子１０は、これらの金属のうち、複数の金属を蒸着させた金属化フィルムにより形成されてもよいし、これらの金属どうしの合金を蒸着させた金属化フィルムにより形成されてもよい。 The capacitor element 10 is formed by stacking two metallized films on which aluminum is vapor-deposited on a dielectric film, winding or laminating the laminated metallized films, and pressing them flat. In the capacitor element 10, the front end face electrode 11 is formed on the front end face by spraying a metal such as zinc, and the rear end face electrode 12 is formed on the rear end face by spraying a metal such as zinc. To. The capacitor unit 2 is housed in the case 3 with both end faces of the capacitor element 10 facing in the front-rear direction. The capacitor element 10 of the present embodiment is formed of a metallized film in which aluminum is vapor-deposited on a dielectric film, but in addition to this, metallization in which other metals such as zinc and magnesium are vapor-deposited. It may be formed of a film. Alternatively, the capacitor element 10 may be formed of a metallized film obtained by depositing a plurality of metals among these metals, or may be formed of a metallized film obtained by depositing an alloy of these metals. ..

バスバーユニット２０は、前バスバー１００と、後バスバー２００と、絶縁板３００とを備える。前バスバー１００および後バスバー２００は、それぞれ、コンデンサ素子１０の前側端面電極１１および後側端面電極１２に接続され、コンデンサ素子１０から電気を引き出す。 The bus bar unit 20 includes a front bus bar 100, a rear bus bar 200, and an insulating plate 300. The front bus bar 100 and the rear bus bar 200 are connected to the front end face electrode 11 and the rear end face electrode 12 of the capacitor element 10, respectively, and draw electricity from the capacitor element 10.

前バスバー１００は、導電性材料、たとえば、銅板により形成され、前側電極端子部１１０と、前側中継部１２０と、前側重合部１３０と、前側接続端子部１４０とを含む。前バスバー１００は、たとえば、一枚の銅板を適宜切り抜き、折り曲げることによって形成され、これら前側電極端子部１１０と、前側中継部１２０と、前側重合部１３０と、前側接続端子部１４０とが一体となっている。 The front bus bar 100 is made of a conductive material, for example, a copper plate, and includes a front electrode terminal portion 110, a front relay portion 120, a front polymerization portion 130, and a front connection terminal portion 140. The front bus bar 100 is formed, for example, by appropriately cutting out and bending a single copper plate, and the front electrode terminal portion 110, the front relay portion 120, the front polymerization portion 130, and the front connection terminal portion 140 are integrally formed. It has become.

前側電極端子部１１０は、左右に長い板状を有し、コンデンサ素子１０の前側端面電極１１を覆う。前側電極端子部１１０の下端には、一対の電極ピン１１１が形成され、これら電極ピン１１１が半田付け等の接続方法によって前側端面電極１１に電気的に接続される。 The front electrode terminal portion 110 has a long plate shape on the left and right, and covers the front end surface electrode 11 of the capacitor element 10. A pair of electrode pins 111 are formed at the lower end of the front electrode terminal portion 110, and these electrode pins 111 are electrically connected to the front end face electrode 11 by a connection method such as soldering.

前側中継部１２０は、前側電極端子部１１０と前側重合部１３０との間を中継する。前側中継部１２０は、左右に長い板状を有し、前側電極端子部１１０の上端部からコンデンサ素子１０の外周面１３に沿って後方に延びる。 The front relay section 120 relays between the front electrode terminal section 110 and the front polymerization section 130. The front relay portion 120 has a long plate shape on the left and right, and extends rearward from the upper end portion of the front electrode terminal portion 110 along the outer peripheral surface 13 of the capacitor element 10.

前側重合部１３０は、左右に長い板状を有し、前側中継部１２０の後端部から上方に延びる。前側重合部１３０には、下部の中央に表裏を貫通する円形の前側挿通穴１３１が形成され、上部の左側と右側とにそれぞれ、表裏を貫通する円形の前側嵌合穴１３２が形成される。 The front polymerization portion 130 has a long plate shape on the left and right, and extends upward from the rear end portion of the front relay portion 120. In the front polymerization portion 130, a circular front insertion hole 131 penetrating the front and back is formed in the center of the lower portion, and a circular front fitting hole 132 penetrating the front and back is formed on the left side and the right side of the upper portion, respectively.

前側接続端子部１４０は、上下に長い板状を有し、前側重合部１３０の左側の上端部から上方へ延びる。前側接続端子部１４０には、先端部に表裏を貫通する円形の取付穴１４１が形成される。この取付穴１４１を用いたねじ止めにより、前側接続端子部１４０に外部端子（図示せず）が接続される。 The front connection terminal portion 140 has a vertically long plate shape and extends upward from the upper left upper end portion of the front polymerization portion 130. The front connection terminal portion 140 is formed with a circular mounting hole 141 penetrating the front and back at the tip portion. An external terminal (not shown) is connected to the front connection terminal portion 140 by screwing using the mounting hole 141.

後バスバー２００は、導電性材料、たとえば、銅板により形成され、後側電極端子部２１０と、後側中継部２２０と、後側重合部２３０と、後側接続端子部２４０とを含む。後バスバー２００は、たとえば、一枚の銅板を適宜切り抜き、折り曲げることによって形成され、これら後側電極端子部２１０と、後側中継部２２０と、後側重合部２３０と、後側接続端子部２４０とが一体となっている。 The rear bus bar 200 is made of a conductive material, for example, a copper plate, and includes a rear electrode terminal portion 210, a rear relay portion 220, a rear polymerization portion 230, and a rear connection terminal portion 240. The rear bus bar 200 is formed, for example, by appropriately cutting out and bending a single copper plate, and these rear electrode terminal portions 210, rear relay portion 220, rear polymerization portion 230, and rear connection terminal portion 240. And are integrated.

後側電極端子部２１０は、左右に長い板状を有し、コンデンサ素子１０の後側端面電極１２を覆う。後側電極端子部２１０の下端には、一対の電極ピン２１１が形成され、これら電極ピン２１１が半田付け等の接続方法によって後側端面電極１２に電気的に接続される。 The rear electrode terminal portion 210 has a long plate shape on the left and right, and covers the rear end surface electrode 12 of the capacitor element 10. A pair of electrode pins 211 are formed at the lower end of the rear electrode terminal portion 210, and these electrode pins 211 are electrically connected to the rear end surface electrode 12 by a connection method such as soldering.

後側中継部２２０は、後側電極端子部２１０と後側重合部２３０との間を中継する。後側中継部２２０は、左右に長い板状を有し、後側電極端子部２１０の上端部からコンデンサ素子１０の外周面１３に沿って前方に延びる。 The rear relay unit 220 relays between the rear electrode terminal unit 210 and the rear polymerization unit 230. The rear relay portion 220 has a long plate shape on the left and right, and extends forward from the upper end portion of the rear electrode terminal portion 210 along the outer peripheral surface 13 of the capacitor element 10.

後側重合部２３０は、左右に長い板状を有し、後側中継部２２０の前端部から上方に延びる。後側重合部２３０には、下部の中央に表裏を貫通する円形の後側挿通穴２３１が形成され、上部の左側と右側とにそれぞれ、表裏を貫通する円形の後側嵌合穴２３２が形成される。 The rear polymerization portion 230 has a long plate shape on the left and right, and extends upward from the front end portion of the rear relay portion 220. In the rear polymerization portion 230, a circular rear insertion hole 231 penetrating the front and back is formed in the center of the lower portion, and a circular rear fitting hole 232 penetrating the front and back is formed on the left side and the right side of the upper portion, respectively. Will be done.

後側接続端子部２４０は、上下に長い板状を有し、後側重合部２３０の右側の上端部から上方へ延びる。後側接続端子部２４０には、先端部に表裏を貫通する円形の取付穴２４１が形成される。この取付穴２４１を用いたねじ止めにより、後側接続端子部２４０に外部端子（図示せず）が接続される。 The rear connection terminal portion 240 has a vertically long plate shape, and extends upward from the upper end portion on the right side of the rear polymerization portion 230. The rear connection terminal portion 240 is formed with a circular mounting hole 241 penetrating the front and back at the tip portion. An external terminal (not shown) is connected to the rear connection terminal portion 240 by screwing using the mounting hole 241.

絶縁板３００は、ＰＰＳ等の樹脂によってやや横長の長方形状に形成され、絶縁性を有する。絶縁板３００の前面３１０（前側重合部１３０に対向する面）には、下部の中央にほぼ円柱状の前側カシメボス３１１が形成され、上部の左側と右側とにそれぞれ、ほぼ円柱状の前側嵌合ボス３１２が形成される。前側カシメボス３１１および前側嵌合ボス３１２の先端は、やや先細りとなる形状を有する。前側嵌合ボス３１２の外周面には、前後方向（前側嵌合穴１３２への嵌合方向）に沿って延びる前側クラッシュリブ３１３が周方向にほぼ９０度の間隔を置いて４個設けられる。前側嵌合ボス３１２の外径Ｒ１１（図３（ｂ）参照）は、前側嵌合穴１３２の穴径Ｒ３１（図２参照）よりもやや小さいが、４個の前側クラッシュリブ３１３を含めた前側嵌合ボス３１２の外径Ｒ１２（図３（ｂ）参照）は、前側嵌合穴１３２の穴径Ｒ３１（図２参照）よりもやや大きい。 The insulating plate 300 is formed of a resin such as PPS into a slightly horizontally long rectangular shape and has an insulating property. On the front surface 310 (the surface facing the front polymerization portion 130) of the insulating plate 300, a substantially columnar front caulking boss 311 is formed in the center of the lower portion, and the substantially cylindrical front side fitting is formed on the left side and the right side of the upper portion, respectively. The boss 312 is formed. The tips of the front caulking boss 311 and the front fitting boss 312 have a slightly tapered shape. On the outer peripheral surface of the front fitting boss 312, four front crash ribs 313 extending in the front-rear direction (fitting direction to the front fitting hole 132) are provided at intervals of approximately 90 degrees in the circumferential direction. The outer diameter R11 of the front fitting boss 312 (see FIG. 3B) is slightly smaller than the hole diameter R31 of the front fitting hole 132 (see FIG. 2), but the front side including the four front crash ribs 313. The outer diameter R12 of the fitting boss 312 (see FIG. 3B) is slightly larger than the hole diameter R31 (see FIG. 2) of the front fitting hole 132.

同様に、絶縁板３００の後面３２０（後側重合部２３０に対向する面）には、下部の中央にほぼ円柱状の後側カシメボス３２１が形成され、上部の左側と右側とにそれぞれ、ほぼ円柱状の後側嵌合ボス３２２が形成される。後側カシメボス３２１および後側嵌合ボス３２２の先端は、やや先細りとなる形状を有する。後側嵌合ボス３２２の外周面には、前後方向（後側嵌合穴２３２への嵌合方向）に沿って延びる後側クラッシュリブ３２３が周方向にほぼ９０度の間隔を置いて４個設けられる。後側嵌合ボス３２２の外径Ｒ２１（図３（ｂ）参照）は、後側嵌合穴２３２の穴径Ｒ３２（図２参照）よりもやや小さいが、４個の後側クラッシュリブ３２３を含めた後側嵌合ボス３２２の外径Ｒ２２（図３（ｂ）参照）は、後側嵌合穴２３２の穴径Ｒ３２（図２参照）よりもやや大きい。 Similarly, on the rear surface 320 (the surface facing the rear polymerization portion 230) of the insulating plate 300, a substantially columnar rear caulking boss 321 is formed in the center of the lower portion, and substantially circular on the left side and the right side of the upper portion, respectively. A columnar rear fitting boss 322 is formed. The tips of the rear caulking boss 321 and the rear fitting boss 322 have a slightly tapered shape. On the outer peripheral surface of the rear fitting boss 322, four rear crash ribs 323 extending in the front-rear direction (fitting direction to the rear fitting hole 232) are provided at intervals of approximately 90 degrees in the circumferential direction. Provided. The outer diameter R21 of the rear fitting boss 322 (see FIG. 3B) is slightly smaller than the hole diameter R32 of the rear fitting hole 232 (see FIG. 2), but has four rear crash ribs 323. The outer diameter R22 (see FIG. 3B) of the rear fitting boss 322 including the rear fitting boss 322 is slightly larger than the hole diameter R32 (see FIG. 2) of the rear fitting hole 232.

絶縁板３００の下端部には、前バスバー１００の前側中継部１２０を下側から支える前側支持板３３０が前方に延びるように形成されるとともに、後バスバー２００の後側中継部２２０を下側から支える後側支持板３４０が後方に延びるように形成される。 At the lower end of the insulating plate 300, a front support plate 330 that supports the front relay portion 120 of the front bus bar 100 from below is formed so as to extend forward, and the rear relay portion 220 of the rear bus bar 200 is formed from below. The supporting rear support plate 340 is formed so as to extend rearward.

バスバーユニット２０において、前バスバー１００の前側重合部１３０と後バスバー２００の後側重合部２３０は、絶縁板３００を挟んで前後に重なり合う。これにより、前側重合部１３０と後側重合部２３０の間の距離を小さくでき、前バスバー１００と後バスバー２００とが有するＥＳＬ（等価直流インダクタンス）を効果的に低減させることができる。また、絶縁板３００により、前側重合部１３０と後側重合部２３０との間の絶縁性が確保される。 In the bus bar unit 20, the front polymerization section 130 of the front bus bar 100 and the rear polymerization section 230 of the rear bus bar 200 overlap each other in the front-rear direction with the insulating plate 300 interposed therebetween. As a result, the distance between the front polymerization section 130 and the rear polymerization section 230 can be reduced, and the ESL (equivalent direct current inductance) of the front bus bar 100 and the rear bus bar 200 can be effectively reduced. Further, the insulating plate 300 ensures the insulating property between the front polymerization portion 130 and the rear polymerization portion 230.

このように前側重合部１３０と後側重合部２３０が絶縁板３００を挟んで重なり合った状態において、前側重合部１３０は、前側カシメボス３１１による熱カシメ、および、前側嵌合ボス３１２と前側嵌合穴１３２との嵌合によって絶縁板３００の前面３１０に固定される。また、後側重合部２３０は、後側カシメボス３２１による熱カシメ、および、後側嵌合ボス３２２と後側嵌合穴２３２との嵌合によって絶縁板３００の後面３２０に固定される。 In the state where the front polymerization section 130 and the rear polymerization section 230 overlap each other with the insulating plate 300 sandwiched between them, the front polymerization section 130 is thermally caulked by the front caulking boss 311 and the front mating boss 312 and the front mating hole. It is fixed to the front surface 310 of the insulating plate 300 by fitting with 132. Further, the rear polymerization portion 230 is fixed to the rear surface 320 of the insulating plate 300 by heat caulking by the rear caulking boss 321 and by fitting the rear fitting boss 322 and the rear fitting hole 232.

即ち、図４（ａ）に示すように、前側重合部１３０は、熱カシメにより絶縁板３００側に潰されてなる前側挿通穴１３１より外径の大きな前側カシメボス３１１の先端部３１１ａと絶縁板３００とで挟み込まれる。これにより、前側重合部１３０、即ち前バスバー１００は、絶縁板３００の前面３１０に沿う方向のみならず前方向へも動かないように絶縁板３００に固定される。同様に、後側重合部２３０は、熱カシメにより絶縁板３００側に潰されてなる後側挿通穴２３１より外径の大きな後側カシメボス３２１の先端部３２１ａと絶縁板３００とで挟み込まれる。これにより、後側重合部２３０、即ち後バスバー２００は、絶縁板３００の後面３２０に沿う方向のみならず後方向へも動かないように絶縁板３００に固定される。 That is, as shown in FIG. 4A, the front polymerization portion 130 has a tip portion 311a and an insulating plate 300 of the front caulking boss 311 having a larger outer diameter than the front insertion hole 131 which is crushed to the insulating plate 300 side by thermal caulking. It is sandwiched between. As a result, the front polymerization portion 130, that is, the front bus bar 100 is fixed to the insulating plate 300 so as not to move not only in the direction along the front surface 310 of the insulating plate 300 but also in the forward direction. Similarly, the rear polymerization portion 230 is sandwiched between the tip portion 321a of the rear caulking boss 321 having a larger outer diameter than the rear insertion hole 231 formed by being crushed toward the insulating plate 300 by thermal caulking and the insulating plate 300. As a result, the rear polymerization portion 230, that is, the rear bus bar 200 is fixed to the insulating plate 300 so as not to move not only in the direction along the rear surface 320 of the insulating plate 300 but also in the rear direction.

また、図４（ｂ）に示すように、前側嵌合ボス３１２が前側嵌合穴１３２に嵌め込まれると、図の一点鎖線で示す前側クラッシュリブ３１３の上端部３１３ａが前側嵌合穴１３２の内周縁で削られて前側クラッシュリブ３１３と前側嵌合穴１３２の内周縁とが接触した状態となる。これにより、前側クラッシュリブ３１３を含めた前側嵌合ボス３１２が前側嵌合穴１３２と遊びなく嵌合した状態となる。よって、前側カシメボス３１１による熱カシメに加え、遊びのない前側嵌合ボス３１２と前側嵌合穴１３２との嵌合により、一層、前バスバー１００が絶縁板３００に対して前方に動きにくくなる。同様に、後側嵌合ボス３２２が後側嵌合穴２３２に嵌め込まれると、図の一点鎖線で示す後側クラッシュリブ３２３の上端部３２３ａが後側嵌合穴２３２の内周縁で削られて後側クラッシュリブ３２３と後側嵌合穴２３２の内周縁とが接触した状態となる。これにより、後側クラッシュリブ３２３を含めた後側嵌合ボス３２２が後側嵌合穴２３２と遊びなく嵌合した状態となる。よって、後側カシメボス３２１による熱カシメに加え、遊びのない後側嵌合ボス３２２と後側嵌合穴２３２との嵌合により、一層、後バスバー２００が絶縁板３００に対して後方に動きにくくなる。 Further, as shown in FIG. 4B, when the front fitting boss 312 is fitted into the front fitting hole 132, the upper end portion 313a of the front crash rib 313 shown by the alternate long and short dash line in the figure is inside the front fitting hole 132. It is scraped at the peripheral edge so that the front crash rib 313 and the inner peripheral edge of the front fitting hole 132 are in contact with each other. As a result, the front fitting boss 312 including the front crash rib 313 is fitted with the front fitting hole 132 without play. Therefore, in addition to the thermal caulking by the front caulking boss 311, the mating of the front mating boss 312 without play and the front mating hole 132 further makes it more difficult for the front bus bar 100 to move forward with respect to the insulating plate 300. Similarly, when the rear fitting boss 322 is fitted into the rear fitting hole 232, the upper end portion 323a of the rear crash rib 323 shown by the alternate long and short dash line 323 in the figure is scraped at the inner peripheral edge of the rear fitting hole 232. The rear side crash rib 323 and the inner peripheral edge of the rear side fitting hole 232 are in contact with each other. As a result, the rear fitting boss 322 including the rear crash rib 323 is in a state of being fitted with the rear fitting hole 232 without play. Therefore, in addition to the thermal caulking by the rear caulking boss 321, the mating of the rear mating boss 322 and the rear mating hole 232 without play makes it more difficult for the rear bus bar 200 to move backward with respect to the insulating plate 300. Become.

次に、バスバーユニット２０の組立手順（製造方法）について説明する。 Next, the assembly procedure (manufacturing method) of the bus bar unit 20 will be described.

図５（ａ）ないし（ｃ）は、本実施の形態に係る、バスバーユニット２０の組立手順について説明するための図である。 5 (a) to 5 (c) are views for explaining an assembly procedure of the bus bar unit 20 according to the present embodiment.

図５（ａ）のように、前側カシメボス３１１を前側挿通穴１３１に通すとともに左右の前側嵌合ボス３１２を左右の前側嵌合穴１３２に嵌め込むようにして、前バスバー１００の前側重合部１３０を絶縁板３００の前面３１０側に取り付ける。同様に、後側カシメボス３２１を後側挿通穴２３１に通すとともに左右の後側嵌合ボス３２２を左右の後側嵌合穴２３２に嵌め込むようにして、後バスバー２００の後側重合部２３０を絶縁板３００の後面３２０側に取り付ける。 As shown in FIG. 5A, the front side overlapping portion 130 of the front bus bar 100 is insulated by passing the front side caulking boss 311 through the front side insertion hole 131 and fitting the left and right front side fitting bosses 312 into the left and right front side fitting holes 132. It is attached to the front surface 310 side of the plate 300. Similarly, the rear side overlapping portion 230 of the rear bus bar 200 is insulated by passing the rear side caulking boss 321 through the rear side insertion hole 231 and fitting the left and right rear side fitting bosses 322 into the left and right rear side fitting holes 232. It is attached to the rear surface 320 side of the 300.

次に、図５（ｂ）および（ｃ）に示すように、前側カシメボス３１１と後側カシメボス３２１とによる熱カシメを行う。即ち、図５（ｂ）のように、熱せられた前側熱カシメ用治具４０１を前側カシメボス３１１の先端に押し当てるとともに、熱せられた後側熱カシメ用治具４０２を後側カシメボス３２１の先端に押し当てる。そして、図５（ｃ）のように、双方の熱カシメ用治具４０１、４０２によって前後両側から、熱で溶けた前側カシメボス３１１の先端部３１１ａと後側カシメボス３２１の先端部３２１ａとを押し潰す。押し潰された前側カシメボス３１１の先端部３１１ａの外径は、前側挿通穴１３１の穴径よりも大きくなり、押し潰された後側カシメボス３２１の先端部３２１ａの外径は、後側挿通穴２３１の穴径よりも大きくなる。前側カシメボス３１１の先端部３１１ａと絶縁板３００の前面３１０とで前側重合部１３０が挟み込まれ、後側カシメボス３２１の先端部３２１ａと絶縁板３００の後面３２０とで後側重合部２３０が挟み込まれる。 Next, as shown in FIGS. 5 (b) and 5 (c), heat caulking is performed by the front caulking boss 311 and the rear caulking boss 321. That is, as shown in FIG. 5B, the heated front heat caulking jig 401 is pressed against the tip of the front caulking boss 311 and the heated rear heat caulking jig 402 is pressed against the tip of the rear caulking boss 321. Press against. Then, as shown in FIG. 5C, the tip 311a of the front caulking boss 311 and the tip 321a of the rear caulking boss 321 melted by heat are crushed from both front and rear sides by both heat caulking jigs 401 and 402. .. The outer diameter of the tip 311a of the crushed front caulking boss 311 is larger than the hole diameter of the front insertion hole 131, and the outer diameter of the tip 321a of the crushed rear caulking boss 321 is the rear insertion hole 231. It is larger than the hole diameter of. The front polymerization portion 130 is sandwiched between the front end portion 311a of the front caulking boss 311 and the front surface 310 of the insulating plate 300, and the rear polymerization portion 230 is sandwiched between the front end portion 321a of the rear caulking boss 321 and the rear surface 320 of the insulating plate 300.

その後、双方の熱カシメ用治具４０１、４０２が外され、バスバーユニット２０の組立が完了する。 After that, both the heat caulking jigs 401 and 402 are removed, and the assembly of the bus bar unit 20 is completed.

＜実施の形態の効果＞
以上、本実施の形態によれば、以下の効果が奏される。 <Effect of embodiment>
As described above, according to the present embodiment, the following effects are achieved.

熱カシメにより絶縁板３００側に潰されてなる前側カシメボス３１１の先端部３１１ａと絶縁板３００とで前側重合部１３０を挟み込むことにより前バスバー１００を絶縁板３００に固定し、熱カシメにより絶縁板３００側に潰されてなる後側カシメボス３２１の先端部３２１ａと絶縁板３００とで後側重合部２３０を挟み込むことにより後バスバー２００を絶縁板３００に固定しているので、前バスバー１００および後バスバー２００を、絶縁板３００に沿う方向のみならず前後方向へも動きにくくすることができる。これにより、前バスバー１００および後バスバー２００の前後方向（絶縁板３００に沿う方向と交差する方向）のがたつきを防止できるので、前バスバー１００および後バスバー２００、特に前側接続端子部１４０および後側接続端子部２４０の寸法精度の向上が期待できる。 The front bus bar 100 is fixed to the insulating plate 300 by sandwiching the front overlapping portion 130 between the tip portion 311a of the front caulking boss 311 which is crushed to the insulating plate 300 side by thermal caulking and the insulating plate 300, and the insulating plate 300 is fixed by thermal caulking. Since the rear bus bar 200 is fixed to the insulating plate 300 by sandwiching the rear overlapping portion 230 between the tip portion 321a of the rear caulking boss 321 crushed to the side and the insulating plate 300, the front bus bar 100 and the rear bus bar 200 Can be made difficult to move not only in the direction along the insulating plate 300 but also in the front-rear direction. As a result, rattling in the front-rear direction (direction intersecting the direction along the insulating plate 300) of the front bus bar 100 and the rear bus bar 200 can be prevented, so that the front bus bar 100 and the rear bus bar 200, particularly the front connection terminal portion 140 and the rear It is expected that the dimensional accuracy of the side connection terminal portion 240 will be improved.

さらに、前側クラッシュリブ３１３を含めた前側嵌合ボス３１２と前側嵌合穴１３２とによる遊びのない嵌合と、後側クラッシュリブ３２３を含めた後側嵌合ボス３２２と後側嵌合穴２３２による遊びのない嵌合とが行われることにより、一層、前バスバー１００および後バスバー２００を絶縁板３００に対して前後方向に動きにくくすることができる。これにより、前バスバー１００および後バスバー２００の寸法精度の一層の向上が期待できる。 Further, there is no play between the front fitting boss 312 including the front crash rib 313 and the front fitting hole 132, and the rear fitting boss 322 and the rear fitting hole 232 including the rear crash rib 323. By performing the fitting without play, the front bus bar 100 and the rear bus bar 200 can be made more difficult to move in the front-rear direction with respect to the insulating plate 300. As a result, further improvement in dimensional accuracy of the front bus bar 100 and the rear bus bar 200 can be expected.

以上、本発明の実施の形態について説明したが、本発明は、上記実施の形態に限定されるものではなく、また、本発明の適用例も、上記実施の形態の他に、種々の変更が可能である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and application examples of the present invention also have various changes in addition to the above embodiments. It is possible.

＜変更例１＞
図６は、変更例１に係る、バスバーユニット２０の要部の正面図である。 <Change example 1>
FIG. 6 is a front view of a main part of the bus bar unit 20 according to the first modification.

本変更例では、前バスバー１００において、左右方向に並ぶ２つの前側嵌合穴１３２のうちの一方、たとえば、図６のように、左側の前側嵌合穴１３２が、真円形でなく左右方向（前側嵌合穴１３２の並び方向）に長い長円形とされ、左右方向の穴径が前側クラッシュリブ３１３を含めた前側嵌合ボス３１２の外径より大きくされる。これにより、左右に並ぶ２つの前側嵌合ボス３１２の間隔Ｌがばらついても、このばらつきを、長円形とされた前側嵌合穴１３２で吸収させることができ、左右の前側嵌合ボス３１２を左右の前側嵌合穴１３２に嵌合させやすくすることができる。 In this modified example, in the front bus bar 100, one of the two front fitting holes 132 arranged in the left-right direction, for example, as shown in FIG. 6, the left front fitting hole 132 is not a perfect circle but in the left-right direction ( It has an oval shape that is long in the front fitting hole 132 (arrangement direction), and the hole diameter in the left-right direction is larger than the outer diameter of the front fitting boss 312 including the front crash rib 313. As a result, even if the distance L between the two front fitting bosses 312 arranged side by side varies, this variation can be absorbed by the oval front fitting hole 132, and the left and right front fitting bosses 312 can be absorbed. It can be easily fitted into the left and right front fitting holes 132.

同様に、図示しないが、後バスバー２００において、左右方向に並ぶ２つの後側嵌合穴２３２のうちの一方、たとえば、左側の後側嵌合穴２３２が、真円形でなく左右方向（後側嵌合穴２３２の並び方向）に長い長円形とされ、左右方向の穴径が後側クラッシュリブ３２３を含めた後側嵌合ボス３２２の外径より大きくされる。これにより、左右の後側嵌合ボス３２２を左右の後側嵌合穴２３２に嵌合させやすくすることができる。 Similarly, although not shown, in the rear bus bar 200, one of the two rear fitting holes 232 arranged in the left-right direction, for example, the left rear fitting hole 232 is not a perfect circle but in the left-right direction (rear side). It has an oval shape that is long in the alignment direction of the fitting holes 232), and the hole diameter in the left-right direction is made larger than the outer diameter of the rear fitting boss 322 including the rear crash rib 323. As a result, the left and right rear fitting bosses 322 can be easily fitted into the left and right rear fitting holes 232.

＜変更例２＞
図７（ａ）は、変更例２に係る、前側嵌合ボス３１２と前側嵌合穴１３２との嵌合部分および後側嵌合ボス３２２と後側嵌合穴２３２との嵌合部分の構成を示すバスバーユニット２０の要部の断面図である。 <Change example 2>
FIG. 7A shows a configuration of a fitting portion between the front fitting boss 312 and the front fitting hole 132 and a fitting portion between the rear fitting boss 322 and the rear fitting hole 232 according to the second modification. It is sectional drawing of the main part of the bus bar unit 20 which shows.

本変更例では、前バスバー１００の前側重合部１３０において、左右の前側嵌合穴１３２の周辺部が絶縁板３００側と反対側に凹む凹部１３３とされる。即ち、前側重合部１３０に形成された凹部１３３の底面１３３ａに前側嵌合穴１３２が形成される。これにより、前側嵌合穴１３２の内周縁が前側嵌合ボス３１２の根元と絶縁板３００の前面３１０との間にできるエッジ部分Ｅ１に当たらないので、エッジ部分Ｅ１への応力集中により前側嵌合ボス３１２がせん断しやすくなることを防止できる。 In this modified example, in the front polymerization portion 130 of the front bus bar 100, the peripheral portions of the left and right front fitting holes 132 are recesses 133 that are recessed on the opposite side to the insulating plate 300 side. That is, the front fitting hole 132 is formed in the bottom surface 133a of the recess 133 formed in the front polymerization portion 130. As a result, the inner peripheral edge of the front fitting hole 132 does not hit the edge portion E1 formed between the base of the front fitting boss 312 and the front surface 310 of the insulating plate 300, so that the front fitting is performed by stress concentration on the edge portion E1. It is possible to prevent the boss 312 from being easily sheared.

同様に、後バスバー２００の後側重合部２３０において、左右の後側嵌合穴２３２の周辺部が絶縁板３００側と反対側に凹む凹部２３３とされる。即ち、後側重合部２３０に形成された凹部２３３の底面２３３ａに後側嵌合穴２３２が形成される。これにより、後側嵌合ボス３２２の根元と絶縁板３００の後面３２０との間にできるエッジ部分Ｅ２への応力集中により後側嵌合ボス３２２がせん断しやすくなることを防止できる。 Similarly, in the rear overlapping portion 230 of the rear bus bar 200, the peripheral portions of the left and right rear fitting holes 232 are recesses 233 recessed on the opposite side to the insulating plate 300 side. That is, the rear fitting hole 232 is formed in the bottom surface 233a of the recess 233 formed in the rear polymerization portion 230. As a result, it is possible to prevent the rear fitting boss 322 from being easily sheared due to stress concentration on the edge portion E2 formed between the root of the rear fitting boss 322 and the rear surface 320 of the insulating plate 300.

なお、上記の例では、前側嵌合穴１３２および後側嵌合穴２３２が凹部１３３、２３３の底面１３３ａ、２３３ａに形成されたが、これに加えて、あるいは、これに替えて、前側挿通穴１３１および後側挿通穴２３１が凹部の底面に形成されるようにしてもよい。このようにすれば、前側カシメボス３１１および後側カシメボス３２１のエッジ部分への応力集中により前側カシメボス３１１および後側カシメボス３２１がせん断しやすくなることを防止できる。 In the above example, the front fitting hole 132 and the rear fitting hole 232 are formed on the bottom surfaces 133a and 233a of the recesses 133 and 233, but in addition to or instead of this, the front insertion hole The 131 and the rear insertion hole 231 may be formed on the bottom surface of the recess. By doing so, it is possible to prevent the front caulking boss 311 and the rear caulking boss 321 from being easily sheared due to stress concentration on the edge portions of the front caulking boss 311 and the rear caulking boss 321.

＜変更例３＞
図７（ｂ）は、変更例３に係る、前側嵌合ボス３１２と前側嵌合穴１３２との嵌合部分および後側嵌合ボス３２２と後側嵌合穴２３２との嵌合部分の構成を示すバスバーユニット２０の要部の断面図である。 <Change example 3>
FIG. 7B shows the configuration of the fitting portion between the front fitting boss 312 and the front fitting hole 132 and the fitting portion between the rear fitting boss 322 and the rear fitting hole 232 according to the third modification. It is sectional drawing of the main part of the bus bar unit 20 which shows.

本変更例では、前バスバー１００の前側重合部１３０において、左右の前側嵌合穴１３２に、絶縁板３００側と反対側にフランジ１３２ａが立つバーリング加工が施される。これにより、変更例１と同様、前側嵌合穴１３２の内周縁が前側嵌合ボス３１２のエッジ部分Ｅ１に当たらないので、エッジ部分Ｅ１への応力集中により前側嵌合ボス３１２がせん断しやすくなることを防止できる。 In this modified example, in the front polymerization portion 130 of the front bus bar 100, the left and right front fitting holes 132 are subjected to burring processing in which the flange 132a stands on the side opposite to the insulating plate 300 side. As a result, as in the first modification, the inner peripheral edge of the front fitting hole 132 does not hit the edge portion E1 of the front fitting boss 312, so that the front fitting boss 312 tends to shear due to stress concentration on the edge portion E1. Can be prevented.

同様に、後バスバー２００の後側重合部２３０において、左右の後側嵌合穴２３２に、絶縁板３００側と反対側にフランジ２３２ａが立つバーリング加工が施される。これにより、後側嵌合ボス３２２のエッジ部分Ｅ２への応力集中により後側嵌合ボス３２２がせん断しやすくなることを防止できる。 Similarly, in the rear overlapping portion 230 of the rear bus bar 200, the left and right rear fitting holes 232 are subjected to burring processing in which the flange 232a stands on the side opposite to the insulating plate 300 side. As a result, it is possible to prevent the rear fitting boss 322 from being easily sheared due to stress concentration on the edge portion E2 of the rear fitting boss 322.

なお、上記の例では、前側嵌合穴１３２および後側嵌合穴２３２にバーリング加工が施されたが、これに加えて、あるいは、これに替えて、前側挿通穴１３１および後側挿通穴２３１に、同様のバーリング加工が施されてもよい。このようにすれば、前側カシメボス３１１および後側カシメボス３２１のエッジ部分への応力集中により前側カシメボス３１１および後側カシメボス３２１がせん断しやすくなることを防止できる。 In the above example, the front fitting hole 132 and the rear fitting hole 232 were burring processed, but in addition to or in place of this, the front insertion hole 131 and the rear insertion hole 231 May be subjected to the same burring process. By doing so, it is possible to prevent the front caulking boss 311 and the rear caulking boss 321 from being easily sheared due to stress concentration on the edge portions of the front caulking boss 311 and the rear caulking boss 321.

＜その他の変更例＞
上記実施の形態では、中央部の一組の前側カシメボス３１１および前側挿通穴１３１と、左右両側の二組の前側嵌合ボス３１２および前側嵌合穴１３２とによって、前バスバー１００が絶縁板３００に固定され、中央部の一組の後側カシメボス３２１および後側挿通穴２３１と、左右両側の二組の後側嵌合ボス３２２および後側嵌合穴２３２とによって、後バスバー２００が絶縁板３００に固定された。このように前側カシメボス３１１と前側挿通穴１３１との組や後側カシメボス３２１と後側挿通穴２３１との組を一組とすれば、熱カシメによる加工時間を短くできる。 <Other changes>
In the above embodiment, the front bus bar 100 is attached to the insulating plate 300 by a pair of front caulking bosses 311 and front insertion holes 131 in the central portion and two sets of front fitting bosses 312 and front fitting holes 132 on both the left and right sides. The rear bus bar 200 is provided with an insulating plate 300 by a set of rear caulking bosses 321 and a rear insertion hole 231 in the central portion and two sets of rear fitting bosses 322 and rear fitting holes 232 on both the left and right sides. It was fixed to. As described above, if the pair of the front caulking boss 311 and the front insertion hole 131 or the pair of the rear caulking boss 321 and the rear insertion hole 231 is combined as one set, the machining time by heat caulking can be shortened.

しかしながら、前側カシメボス３１１と前側挿通穴１３１との組数や後側カシメボス３２１と後側挿通穴２３１との組数は適宜変更できる。また、前側嵌合ボス３１２と前側嵌合穴１３２組数や後側嵌合ボス３２２と後側嵌合穴２３２との組数も適宜変更できる。たとえば、左右両側の二組の前側カシメボス３１１および前側挿通穴１３１と、中央部の一組の前側嵌合ボス３１２および前側嵌合穴１３２とによって、前バスバー１００が絶縁板３００に固定され、左右両側の二組の後側カシメボス３２１および後側挿通穴２３１と、中央部の一組の後側嵌合ボス３２２および後側嵌合穴２３２とによって、後バスバー２００が絶縁板３００に固定される構成が採られてもよい。このように前側カシメボス３１１と前側挿通穴１３１との組数や後側カシメボス３２１と後側挿通穴２３１との組数を複数組とすれば、前バスバー１００および後バスバー２００を、より安定して絶縁板３００に固定させることができる。 However, the number of pairs of the front caulking boss 311 and the front insertion hole 131 and the number of pairs of the rear caulking boss 321 and the rear insertion hole 231 can be changed as appropriate. Further, the number of sets of the front fitting boss 312 and the front fitting hole 132 and the number of sets of the rear fitting boss 322 and the rear fitting hole 232 can be changed as appropriate. For example, the front bus bar 100 is fixed to the insulating plate 300 by two sets of front caulking bosses 311 and front insertion holes 131 on both the left and right sides, and a set of front fitting bosses 312 and front fitting holes 132 in the central portion, and left and right. The rear bus bar 200 is fixed to the insulating plate 300 by two sets of rear caulking bosses 321 and rear insertion holes 231 on both sides and a set of rear fitting bosses 322 and rear fitting holes 232 in the central portion. The configuration may be adopted. By setting the number of pairs of the front caulking boss 311 and the front insertion hole 131 and the number of pairs of the rear caulking boss 321 and the rear insertion hole 231 to a plurality of pairs in this way, the front bus bar 100 and the rear bus bar 200 can be made more stable. It can be fixed to the insulating plate 300.

また、前側カシメボス３１１と前側挿通穴１３１との組数と後側カシメボス３２１と後側挿通穴２３１との組数は同じでなくてもよく、前側カシメボス３１１と後側カシメボス３２１の位置関係は絶縁板３００を介して必ずしも対向した位置関係でなくてもよい。また、絶縁板３００には、前側カシメボス３１１または後側カシメボス３２１のいずれか一方のみが形成されてもよい。 Further, the number of pairs of the front caulking boss 311 and the front insertion hole 131 and the number of pairs of the rear caulking boss 321 and the rear insertion hole 231 do not have to be the same, and the positional relationship between the front caulking boss 311 and the rear caulking boss 321 is insulated. It does not necessarily have to be in a positional relationship facing each other via the plate 300. Further, only one of the front caulking boss 311 and the rear caulking boss 321 may be formed on the insulating plate 300.

さらに、上記実施の形態では、前側嵌合ボス３１２に４つの前側クラッシュリブ３１３が形成され、後側嵌合ボス３２２に４つの後側クラッシュリブ３２３が形成された。しかしながら、前側クラッシュリブ３１３および後側クラッシュリブ３２３の個数は、４つに限られるものではなく、たとえば、２つの前側クラッシュリブ３１３および後側クラッシュリブ３２３がほぼ１８０度の間隔を置いて、それぞれ前側嵌合ボス３１２および後側嵌合ボス３２２に形成されてもよいし、３つの前側クラッシュリブ３１３および後側クラッシュリブ３２３がほぼ１２０度の間隔を置いて、それぞれ前側嵌合ボス３１２および後側嵌合ボス３２２に形成されてもよい。 Further, in the above embodiment, the front fitting boss 312 is formed with four front crash ribs 313, and the rear fitting boss 322 is formed with four rear crash ribs 323. However, the number of front crash ribs 313 and rear crash ribs 323 is not limited to four, for example, the two front crash ribs 313 and the rear crash ribs 323 are spaced about 180 degrees apart from each other. The front mating boss 312 and the rear mating boss 322 may be formed, or the three front crush ribs 313 and the rear crush rib 323 are spaced approximately 120 degrees apart, respectively, from the front mating boss 312 and the rear. It may be formed on the side fitting boss 322.

さらに、コンデンサ素子１０の個数は、上記実施の形態のものに限られず、必要な電気容量に応じて、適宜、変更できる。すなわち、上記実施の形態では１個のコンデンサ素子１０を配置したが、これに限られることなく、その他の個数のコンデンサ素子１０が配置されてもよい。 Further, the number of the capacitor elements 10 is not limited to that of the above embodiment, and can be appropriately changed according to the required electric capacity. That is, in the above embodiment, one capacitor element 10 is arranged, but the present invention is not limited to this, and other numbers of capacitor elements 10 may be arranged.

さらに、上記実施の形態では、コンデンサ素子１０は、誘電体フィルム上にアルミニウムを蒸着させた２枚の金属化フィルムを重ね、重ねた金属化フィルムを巻回または積層することで形成されたものであるが、これ以外にも、誘電体フィルムの両面にアルミニウムを蒸着させた金属化フィルムと絶縁フィルムとを重ね、これを巻回または積層することによりコンデンサ素子１０を形成してもよい。 Further, in the above embodiment, the capacitor element 10 is formed by stacking two metallized films on which aluminum is vapor-deposited on a dielectric film, and winding or laminating the laminated metallized films. However, in addition to this, the capacitor element 10 may be formed by superimposing a metallized film in which aluminum is vapor-deposited on both sides of a dielectric film and an insulating film, and winding or laminating them.

さらに、上記実施の形態では、コンデンサユニット２が収容されたケース３に充填樹脂４が充填される、いわゆるケースモールドタイプのフィルムコンデンサ１に本発明が適用される例が示された。しかしながら、本発明が、コンデンサユニットがケースには収容されずに外装樹脂で覆われる、いわゆるケースレスタイプのフィルムコンデンサに適用されてもよい。 Further, in the above embodiment, an example is shown in which the present invention is applied to a so-called case mold type film capacitor 1 in which the case 3 in which the capacitor unit 2 is housed is filled with the filling resin 4. However, the present invention may be applied to a so-called caseless type film capacitor in which the capacitor unit is not housed in the case but is covered with an exterior resin.

さらに、上記実施の形態では、本発明のコンデンサの一例として、フィルムコンデンサ１が挙げられた。しかしながら、本発明は、フィルムコンデンサ１以外のコンデンサに適用することもできる。 Further, in the above embodiment, the film capacitor 1 was mentioned as an example of the capacitor of the present invention. However, the present invention can also be applied to capacitors other than the film capacitor 1.

この他、本発明の実施の形態は、特許請求の範囲に示された技術的思想の範囲内において、適宜、種々の変更が可能である。 In addition, various modifications of the embodiment of the present invention can be made as appropriate within the scope of the technical idea shown in the claims.

なお、上記実施の形態の説明において「上方」「下方」等の方向を示す用語は、構成部材の相対的な位置関係にのみ依存する相対的な方向を示すものであり、鉛直方向、水平方向等の絶対的な方向を示すものではない。 In the description of the above-described embodiment, terms such as "upper" and "lower" indicate relative directions that depend only on the relative positional relationship of the constituent members, and are vertical and horizontal directions. It does not indicate the absolute direction such as.

本発明は、各種電子機器、電気機器、産業機器、車両の電装等に使用されるコンデンサに有用である。 The present invention is useful for capacitors used in various electronic devices, electrical devices, industrial devices, electrical components of vehicles, and the like.

１フィルムコンデンサ（コンデンサ）
１０コンデンサ素子
１００前バスバー（第１のバスバー）
１３０前側重合部（第１の重合部）
１３１前側挿通穴（第１の穴部）
１３２前側嵌合穴（第３の穴部）
１３２ａフランジ
１３３凹部
１３３ａ底面
２００後バスバー（第２のバスバー）
２３０後側重合部（第２の重合部）
２３１後側挿通穴（第２の穴部）
２３２後側嵌合穴（第４の穴部）
２３２ａフランジ
２３３凹部
２３３ａ底面
３００絶縁板
３１１前側カシメボス（第１の突起部）
３１１ａ先端部
３１２前側嵌合ボス（第３の突起部）
３１３前側クラッシュリブ（第１のリブ）
３２１後側カシメボス（第２の突起部）
３２１ａ先端部
３２２後側嵌合ボス（第４の突起部）
３２３後側クラッシュリブ（第２のリブ）
４０１前側熱カシメ用治具（第１の熱カシメ用治具）
４０２後側熱カシメ用治具（第２の熱カシメ用治具） 1 Film capacitor (capacitor)
10 Capacitor element 100 Front bus bar (first bus bar)
130 Front polymerization section (first polymerization section)
131 Front insertion hole (first hole)
132 Front fitting hole (third hole)
132a Flange 133 Recessed 133a Bottom 200 Rear busbar (second busbar)
230 Rear polymerization part (second polymerization part)
231 Rear insertion hole (second hole)
232 Rear fitting hole (4th hole)
232a Flange 233 Recess 233a Bottom 300 Insulation plate 311 Front caulking boss (first protrusion)
311a Tip 312 Front fitting boss (third protrusion)
313 Front crash rib (first rib)
321 Rear caulking boss (second protrusion)
321a Tip 322 Rear fitting boss (4th protrusion)
323 Rear crash rib (second rib)
401 Front side thermal caulking jig (first thermal caulking jig)
402 Rear side thermal caulking jig (second thermal caulking jig)

Claims

A capacitor element having a first end face electrode and a second end face electrode,
A first bus bar and a second bus bar connected to the first end face electrode and the second end face electrode of the capacitor element, respectively.
A first polymerized portion and a second polymerized portion, each of which is contained in the first bus bar and the second bus bar and overlaps with each other,
An insulating plate for insulating between the first polymerization part and the second polymerization part,
A first hole penetrating the first polymerization part and
A second hole penetrating the second polymerization part and
A third hole penetrating the first polymerization part and
A fourth hole penetrating the second polymerization portion and
A first protrusion provided on the insulating plate and passed through the first hole,
A second protrusion provided on the insulating plate and passed through the second hole, and a second protrusion.
A third protrusion provided on the insulating plate and fitted into the third hole, and a third protrusion.
A fourth protrusion provided on the insulating plate and fitted into the fourth hole is provided.
The first polymerized portion is sandwiched between the tip portion of the first protrusion having a larger outer diameter than the first hole portion crushed toward the insulating plate side and the insulating plate, whereby the insulating plate is formed. Fixed to
The second polymerized portion is sandwiched between the tip portion of the second protrusion having a larger outer diameter than the second hole portion crushed toward the insulating plate side and the insulating plate, whereby the insulating plate is formed. Fixed to
The first bus bar and the second bus bar
A first electrode terminal portion and a second electrode terminal portion that cover the first end face electrode and the second end face electrode, and
A first relay portion and a second relay portion that are bent from the ends of the first polymerization portion and the second polymerization portion and extend to the first electrode terminal portion and the second electrode terminal portion. Including more
The insulating plate may have a first link portion and the support plate supporting at least one of the second relay unit,
A plurality of first ribs extending in the fitting direction are provided on the outer peripheral surface of the third protrusion in the circumferential direction, and the third protrusion including the plurality of first ribs. The outer diameter is made larger than the hole diameter of the third hole,
A plurality of second ribs extending in the fitting direction are provided on the outer peripheral surface of the fourth protrusion in the circumferential direction, and the fourth protrusion including the plurality of second ribs. The outer diameter is made larger than the hole diameter of the fourth hole,
When the third protrusion is fitted into the third hole, the upper end side of the first rib is scraped by the inner peripheral edge of the third hole, and the first rib and the third hole are formed. Contact with the inner peripheral edge of the part
When the fourth protrusion is fitted into the fourth hole, the upper end side of the second rib is scraped by the inner peripheral edge of the fourth hole, and the second rib and the fourth hole are formed. Contact with the inner peripheral edge of the part
At least one of the pair of the first hole portion and the second hole portion and the pair of the third hole portion and the fourth hole portion has an inner peripheral edge of the hole portion of one set. Burling processing is performed so that the flange stands on the side opposite to the insulating plate side so as not to hit the edge portion of the protrusion fitted in the hole portion.
A capacitor that is characterized by that.

In the capacitor according to claim 1 ,
It is provided with two sets of the third hole portion and the third protrusion portion, and two sets of the fourth hole portion and the fourth protrusion portion.
One of the two third holes is formed so as to be elongated in the direction in which the two third holes are aligned.
One of the two fourth holes is formed so as to be elongated in the direction in which the two fourth holes are aligned.
A capacitor that is characterized by that.