JP2009246287A - Electrolytic capacitor - Google Patents
Electrolytic capacitor Download PDFInfo
- Publication number
- JP2009246287A JP2009246287A JP2008094004A JP2008094004A JP2009246287A JP 2009246287 A JP2009246287 A JP 2009246287A JP 2008094004 A JP2008094004 A JP 2008094004A JP 2008094004 A JP2008094004 A JP 2008094004A JP 2009246287 A JP2009246287 A JP 2009246287A
- Authority
- JP
- Japan
- Prior art keywords
- rivet
- washer
- electrode tab
- rising portion
- electrolytic capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
この発明は電解コンデンサに関するもので、特にコンデンサ素子から引き出した電極タブと封口板のリベットの接続構造に関する。 The present invention relates to an electrolytic capacitor, and more particularly to a connection structure of an electrode tab drawn from a capacitor element and a rivet of a sealing plate.
一般的に電解コンデンサは、リード端子型、表面実装型、基板自立型等の形状のものが知られている。このうち基板自立型の電解コンデンサの一般的な構造を図１とともに説明する。電解コンデンサは、陽極箔と陰極箔をセパレータである電解紙を介して巻回したコンデンサ素子１をアルミニウム等の金属よりなる有底筒状の外装ケース２に収納するとともに、外装ケース２の開口端部に封口板３を収納し、外装ケース２の開口端部をカーリング加工して、封口を行うことにより製造される。 Generally, electrolytic capacitors having a shape such as a lead terminal type, a surface mount type, and a substrate self-supporting type are known. Of these, a general structure of a substrate self-supporting electrolytic capacitor will be described with reference to FIG. The electrolytic capacitor accommodates a capacitor element 1 in which an anode foil and a cathode foil are wound through electrolytic paper as a separator in a bottomed cylindrical outer case 2 made of a metal such as aluminum, and an open end of the outer case 2. The sealing plate 3 is housed in the part, and the opening end of the outer case 2 is curled and sealed.
このような電解コンデンサでは、各電極箔には平板状の電極タブ４、４が接続されており、巻回されたコンデンサ素子１の一方の巻回端面から導出されている。また封口板３には、その表裏を貫通するリベット５，５が埋設されている。さらにリベット５，５は、封口板３の外部側ではプリント基板に接続するための外部端子６，６と接続・固定している。また、リベット５，５の封口板３の内部側の端部には、コンデンサ素子１から導出された電極タブ４，４と電気的に接続している。 In such an electrolytic capacitor, flat electrode tabs 4 and 4 are connected to each electrode foil, and are led out from one winding end face of the wound capacitor element 1. The sealing plate 3 is embedded with rivets 5 and 5 penetrating the front and back surfaces. Furthermore, the rivets 5 and 5 are connected and fixed to external terminals 6 and 6 for connection to the printed circuit board on the outside of the sealing plate 3. Further, the inner ends of the sealing plates 3 of the rivets 5 and 5 are electrically connected to the electrode tabs 4 and 4 led out from the capacitor element 1.
このリベットと電極タブの接続方法としては、コンデンサ素子１より引き出した電極タブ４，４にそれぞれリベット５，５が挿入できる適当な径の穴を穿ち（図示せず）、この穴にリベット５，５を挿入し、さらにワッシャ７，７を挿入してリベット５，５の頭部を押しつぶし、リベット５，５と電極タブ４，４を一体化する方法によって接続されている。 As a method for connecting the rivet and the electrode tab, holes (not shown) having appropriate diameters into which the rivets 5 and 5 can be inserted are formed in the electrode tabs 4 and 4 drawn from the capacitor element 1, respectively. 5 is inserted, and washers 7 and 7 are further inserted to crush the heads of the rivets 5 and 5 so that the rivets 5 and 5 and the electrode tabs 4 and 4 are connected together.
しかしこの接続方法では、電極タブ４、４とリベット５，５の間の直接的な電気的な接触部は、電極タブ４，４の穴の内側面とリベット５，５との接触部分だけとなり、電極タブ４，４とリベット５，５との電気的な接続はワッシャ７，７を介して行われることになる。 However, in this connection method, the direct electrical contact between the electrode tabs 4 and 4 and the rivets 5 and 5 is only the contact portion between the inner surface of the hole of the electrode tabs 4 and 4 and the rivets 5 and 5. The electrical connection between the electrode tabs 4 and 4 and the rivets 5 and 5 is made through the washers 7 and 7.
このため、リベットの頭部を押しつぶす際の精度によっては、電極タブ４，４とリベット５，５の電気的接続が充分でなく、電解コンデンサがオープン不良を引き起こすことがあった。 For this reason, depending on the accuracy when crushing the head of the rivet, the electrical connection between the electrode tabs 4 and 4 and the rivets 5 and 5 is not sufficient, and the electrolytic capacitor may cause open failure.
このような問題を解決するための手段として、リベットとワッシャを用いて、電極タブ４，４とリベット５，５を接続する方法として、電極タブ４，４の一部をワッシャの内側面部に食い込ませてリベットを圧着して接続する方法が知られている（実開昭５６−４２５２号公報）。この方法では、図４に示すように、電極タブ４に穴を開け、その周縁部に立ち上がり部４２を設けて、この立ち上がり部４２をワッシャ７の内側面に食い込ませたことで、リベット５の周囲に立ち上がり部４２が配置され、電極タブ４とリベット５の直接的な電気的な接触部が増加し、接触抵抗が減少を図ることができると提案されている。そしてこのような構造では、経時的な接続抵抗の増加による電解コンデンサの損失の増加を防止できるという効果を有している。 As a means for solving such a problem, as a method of connecting the electrode tabs 4 and 4 and the rivets 5 and 5 using rivets and washers, a part of the electrode tabs 4 and 4 is bitten into the inner side surface of the washer. A method of crimping and connecting rivets is known (Japanese Utility Model Laid-Open No. 56-4252). In this method, as shown in FIG. 4, a hole is formed in the electrode tab 4, a rising portion 42 is provided at the peripheral portion thereof, and this rising portion 42 is bitten into the inner surface of the washer 7. It has been proposed that a rising portion 42 is disposed in the periphery, the direct electrical contact portion between the electrode tab 4 and the rivet 5 is increased, and the contact resistance can be reduced. Such a structure has the effect of preventing an increase in the loss of the electrolytic capacitor due to an increase in connection resistance over time.
以上のように、電極タブとリベットの接続構造としては次の文献が知られている。
発明者らは、従来の電極タブとリベットとの接続方法として、さらなる電解コンデンサの内部抵抗を低減するために、電極タブとリベットの接続面積を増加させることを試みた。そして、電極タブに接続孔を開けその周囲に立ち上がり部を設けて、この立ち上がり部をワッシャの内側面のみならす、ワッシャの上面にまで延長し、押しつぶしたリベットとワッシャとの間に立ち上がり部を挟み込むことで、より接触抵抗を低減させることを見出した。 The inventors tried to increase the connection area between the electrode tab and the rivet as a conventional method of connecting the electrode tab and the rivet in order to further reduce the internal resistance of the electrolytic capacitor. Then, a connection hole is opened in the electrode tab, and a rising part is provided around the connection hole. The rising part is made only on the inner surface of the washer, is extended to the upper surface of the washer, and the rising part is interposed between the crushed rivet and the washer. It has been found that the contact resistance is further reduced.
しかしながら、電極タブの立ち上がり部をワッシャの上面にまで延長し、押しつぶしたリベットとワッシャとの間に立ち上がり部を挟み込む技術を採用した場合には、次のような問題が発生した。 However, when the technology has been adopted in which the rising portion of the electrode tab is extended to the upper surface of the washer and the rising portion is sandwiched between the crushed rivet and the washer, the following problem has occurred.
前述したように、リベットと電極タブの接触面積を拡大し、接触抵抗を減少させるためには、電極タブの立ち上がり部を長くすることが効果的である。しかし、図５に示すように、電極タブ４の立ち上がり部４２を長くしておくと、リベット５の頭部を押しつぶした際に、立ち上がり部４２の先端が切断されてしまうことがあった。この切断された立ち上がり部４２は金属屑４４として電解コンデンサの混入してしまうことがあり、電解コンデンサの内部でのショートを引き起こす一因となってしまうことが判明した。 As described above, to increase the contact area between the rivet and the electrode tab and reduce the contact resistance, it is effective to lengthen the rising portion of the electrode tab. However, as shown in FIG. 5, if the rising portion 42 of the electrode tab 4 is lengthened, the tip of the rising portion 42 may be cut when the head of the rivet 5 is crushed. It turned out that the cut | disconnected rise part 42 may mix with an electrolytic capacitor as the metal scrap 44, and will cause a short circuit inside an electrolytic capacitor.
そこで、このような電解コンデンサの製造過程で、金属屑が発生しないような電解コンデンサの構造について、検討してこの発明に至った。 In view of this, the inventors have studied the structure of an electrolytic capacitor that does not generate metal scraps in the process of manufacturing such an electrolytic capacitor, and have reached the present invention.
そこで、この出願の請求項１に係る発明は、陽極箔と陰極箔をセパレータを介して巻回し、巻回端面より電極タブを導出したコンデンサ素子と、このコンデンサ素子を収納する有底筒状の外装ケースと、外部端子を固定するとともに表裏を貫通するリベットを有する封口板を備え、電極タブをワッシャを介してリベットに固定してなる電解コンデンサにおいて、 前記ワッシャに中心孔近傍が肉薄となる凹部を設けるとともに、前記電極タブの端部に、周囲に立ち上がり部を有するリベット挿入用の接続孔を設け、この立ち上がり部を前記ワッシャの中心孔に挿通させ、前記リベットを押しつぶして、前記電極タブの立ち上がり部を、押しつぶしたリベットとワッシャの凹部との間で押圧して固定したことを特徴とする。 Therefore, the invention according to claim 1 of this application is a capacitor element in which an anode foil and a cathode foil are wound through a separator and an electrode tab is led out from a winding end surface, and a bottomed cylindrical shape that houses the capacitor element. An electrolytic capacitor comprising an outer case and a sealing plate having a rivet for fixing an external terminal and penetrating the front and back, and an electrode tab fixed to the rivet via a washer, wherein the washer has a concave portion in the vicinity of the center hole. And a connecting hole for inserting a rivet having a rising portion around the end of the electrode tab. The rising portion is inserted into the center hole of the washer, and the rivet is crushed to The rising portion is pressed and fixed between the crushed rivet and the recess of the washer.
また、この出願の請求項２に係る発明は、前記の電解コンデンサの構造を製造方法の態様として捉えたもので、陽極箔と陰極箔をセパレータを介して巻回し、巻回端面より電極タブを導出したコンデンサ素子と、このコンデンサ素子を収納する有底筒状の外装ケースと、外部端子を固定するとともに表裏を貫通するリベットを有する封口板を備え、電極タブをワッシャを介してリベットに固定してなる電解コンデンサの製造方法において、前記電極タブの端部に、周囲に立ち上がり部を有するリベット挿入用の接続孔を設ける工程と、リベットに電極タブの接続孔を挿通させる工程と、中心孔近傍が肉薄となる凹部を設けてなるワッシャを前記リベットに挿通し、前記電極タブの立ち上がり部が前記ワッシャの中心孔を貫通して、前記ワッシャの上面より突出させる工程と、前記リベットを押しつぶして、前記電極タブの立ち上がり部を、押しつぶしたリベットとワッシャの凹部との間で押圧して固定する工程を含む電解コンデンサの製造方法を特徴としている。 The invention according to claim 2 of the present application captures the structure of the electrolytic capacitor as an aspect of the manufacturing method. The anode foil and the cathode foil are wound through a separator, and an electrode tab is formed from the winding end face. It has a lead-out capacitor element, a bottomed cylindrical outer case that houses this capacitor element, a sealing plate having a rivet that fixes the external terminal and penetrates the front and back, and the electrode tab is fixed to the rivet via a washer. In the method of manufacturing an electrolytic capacitor, a step of providing a connection hole for inserting a rivet having a rising portion around the end of the electrode tab, a step of inserting the connection hole of the electrode tab into the rivet, and the vicinity of the center hole A washer provided with a thinned recess is inserted into the rivet, and the rising portion of the electrode tab penetrates the center hole of the washer, and the washer The method of manufacturing an electrolytic capacitor includes a step of projecting from the upper surface of the capacitor and a step of crushing the rivet and pressing and fixing the rising portion of the electrode tab between the crushed rivet and the recess of the washer. .
このように、ワッシャに中心孔近傍が肉薄となる凹部を設け、立ち上がり部の端部をワッシャの凹部との間で押圧するようにリベットを押しつぶした場合には、ワッシャに沿って折り曲げられる立ち上がり部の角度が緩和されるとともに、リベットの頭部を押しつぶした際に立ち上がり部が押しつぶされ、その厚さが薄くなるように塑性変形する。そして、この変形に伴い電極タブの厚さが厚くなる部分が発生するが、ワッシャの凹部がこの電極タブの厚くなる部分を収納する空間として作用し、電極タブが圧延されて延びる応力が緩和される。この結果、立ち上がり部の先端が切断してしまうことがなくなったものと考えられる。 In this way, when the washer is provided with a concave portion where the vicinity of the center hole is thin, and the rivet is crushed so as to press the end of the rising portion between the washer and the concave portion of the washer, the rising portion that is bent along the washer And the rising portion is crushed when the rivet head is crushed, and plastically deforms so that its thickness is reduced. A portion where the thickness of the electrode tab increases with this deformation is generated, but the recess of the washer acts as a space for accommodating the portion where the electrode tab becomes thick, and the stress that the electrode tab is rolled and relaxed is relieved. The As a result, it is considered that the tip of the rising portion is not cut.
リベットと電極タブの接触面積が拡大することで、接触抵抗が減少し、電解コンデンサのＥＳＲの低減を図ることができる。また、その製造過程で金属屑が発生することがないため、電解コンデンサへの金属屑の混入による製造不良を無くすことができる。 By increasing the contact area between the rivet and the electrode tab, the contact resistance can be reduced and the ESR of the electrolytic capacitor can be reduced. Further, since no metal scrap is generated during the manufacturing process, it is possible to eliminate manufacturing defects due to the mixing of the metal scrap into the electrolytic capacitor.
この発明を実施するための最良の形態について説明する。 The best mode for carrying out the present invention will be described.
電解コンデンサの全体の内部構造は従来の構造のものとほぼ同等であり、図１を参照して説明する。図１中、コンデンサ素子１は、陽極箔と陰極箔をセパレータを介して巻回し、巻回端面より電極タブ４，４を導出したものである。陽極箔と陰極箔、セパレータはそれぞれ公知のものを用いることができる。また電極タブ４，４はアルミニウム等の金属よりなる帯状のもので、それぞれ陽極箔、陰極箔に取り付けられて、コンデンサ素子１の一方の巻回端面から導出されたものである。 The entire internal structure of the electrolytic capacitor is almost the same as that of the conventional structure, and will be described with reference to FIG. In FIG. 1, a capacitor element 1 is obtained by winding an anode foil and a cathode foil through a separator and leading out electrode tabs 4 and 4 from the winding end face. Known anode foils, cathode foils, and separators can be used. The electrode tabs 4 and 4 are strips made of metal such as aluminum, and are attached to the anode foil and the cathode foil, respectively, and are led out from one winding end face of the capacitor element 1.
外装ケース２はアルミニウム等の金属よりなり、有底筒状に形成されて、コンデンサ素子を収納する。 The outer case 2 is made of a metal such as aluminum and is formed in a bottomed cylindrical shape and houses a capacitor element.
封口板３はベークライト板に弾性ゴムを貼り付けて構成され、その表裏を貫通するリベット５，５を備え、弾性ゴム側の面にはリベット５，５により外部端子６，６が固定されている。 The sealing plate 3 is configured by attaching elastic rubber to a bakelite plate, and includes rivets 5 and 5 penetrating the front and back surfaces, and external terminals 6 and 6 are fixed to the elastic rubber side surface by the rivets 5 and 5. .
次に、電極タブと封口板のリベットの接続方法について説明する。 Next, a method for connecting the electrode tab and the sealing plate rivet will be described.
まず、図６に示すように、コンデンサ素子１から導出した電極タブ４，４の先端部に、リベット５，５と同径またはやや径大の接続孔４１、４１をそれぞれ形成する。この接続孔４１，４１は例えば、先端が尖った針状の治具によって、接続孔４１，４１を穿つことができる。この接続孔を穿つ際には、接続孔の周囲に電極タブが立ち上がるように残るが、この部分を立ち上がり部４２とする。この立ち上がり部４２は針状の治具の形状によって、接続孔の周囲を取り囲むように複数の立ち上がり部とすることができる。 First, as shown in FIG. 6, connection holes 41 and 41 having the same diameter as or slightly larger than the rivets 5 and 5 are formed at the tip portions of the electrode tabs 4 and 4 led out from the capacitor element 1. For example, the connection holes 41 and 41 can be formed by a needle-like jig having a sharp tip. When the connection hole is formed, the electrode tab remains so as to rise around the connection hole. The rising portion 42 can be formed as a plurality of rising portions so as to surround the periphery of the connection hole depending on the shape of the needle-shaped jig.
そして、図３（Ａ）に示すように、封口板３のリベット５に第一のワッシャ９を挿入し、さらに電極タブ５の接続孔４１を挿入する。この結果、リベット５の軸の周囲を取り囲むように電極タブ４の立ち上がり部４２が、配置されるようになる。この後、第二のワッシャ７を挿入する。この第二のワッシャ７は中心孔が、リベット５および電極タブの立ち上がり部４２を収納できるような大きさの径に形成されている。そして第二のワッシャ７は中心孔に向かって肉薄となるようなテーパがその両面に形成され、凹部７１を構成している。 Then, as shown in FIG. 3A, the first washer 9 is inserted into the rivet 5 of the sealing plate 3 and the connection hole 41 of the electrode tab 5 is further inserted. As a result, the rising portion 42 of the electrode tab 4 is disposed so as to surround the periphery of the axis of the rivet 5. Thereafter, the second washer 7 is inserted. The second washer 7 has a center hole with a diameter large enough to accommodate the rivet 5 and the rising portion 42 of the electrode tab. The second washer 7 is formed with a taper that becomes thinner toward the center hole on both sides thereof to form a recess 71.
なお、第二のワッシャ７に形成される凹部７１は、片面のみに形成されていても良いが、片面にのみに凹部が形成されたワッシャの場合には、リベットに対する挿入方向を判別して挿入する作業が必要となるため、作業が煩雑となる。このため、凹部７１は両面に形成されていることが好ましい。 The recess 71 formed in the second washer 7 may be formed only on one side, but in the case of a washer having a recess formed only on one side, the insertion direction with respect to the rivet is determined and inserted. Therefore, the work becomes complicated. For this reason, it is preferable that the recessed part 71 is formed in both surfaces.
また、図３（Ｂ）に示すように、第二のワッシャ７をリベット５に挿入した際には、第二のワッシャ７の中心孔に電極タブの立ち上がり部４２が挿入され、さらに電極タブの立ち上がり部４２の先端は、第二のワッシャ７の上面に突出するようになる。 Further, as shown in FIG. 3B, when the second washer 7 is inserted into the rivet 5, the rising portion 42 of the electrode tab is inserted into the center hole of the second washer 7, and the electrode tab The tip of the rising portion 42 protrudes from the upper surface of the second washer 7.
この状態で、図２に示すように、リベット５の頭部を押しつぶす。リベット５の頭部を押しつぶすことによって、電極タブの立ち上がり部４２はリベット５とワッシャ７の間に挟まれるようにして固定される。 In this state, the head of the rivet 5 is crushed as shown in FIG. By crushing the head of the rivet 5, the rising portion 42 of the electrode tab is fixed so as to be sandwiched between the rivet 5 and the washer 7.
このリベット５を押しつぶして電極タブ４を固定する際、電極タブ４の立ち上がり部４２はリベット５によって押しつぶされ、その厚さが薄くなるように塑性変形するが、この変形に伴い電極タブ４はその厚さが厚くなる部分があり、この厚さが厚くなった部分がワッシャ７の凹部７１によって形成された空間が収納されるため、電極タブ４が伸びる方向への応力が緩和され、立ち上がり部４２の先端が切断してしまうことがなくなる。 When the rivet 5 is crushed and the electrode tab 4 is fixed, the rising portion 42 of the electrode tab 4 is crushed by the rivet 5 and plastically deformed so that the thickness thereof becomes thin. There is a portion where the thickness is increased, and since the space formed by the concave portion 71 of the washer 7 is accommodated in the portion where the thickness is increased, the stress in the direction in which the electrode tab 4 extends is relieved, and the rising portion 42 The tip of the is no longer cut off.
また、電極タブ４はリベット５に対し、リベットの軸の側面を取り囲むように立ち上がり部４２が配置されて接触するとともに、さらに、立ち上がり部４２は、押しつぶされたリベット５の頭部と第二のワッシャ７の間に挟まれるようになり、リベット５と電極タブ４の接触面積が増大する。この結果、電極タブ４とリベット５の接触抵抗を減少させることができ、電解コンデンサ全体としてのＥＳＲの減少を図ることができる。 Further, the electrode tab 4 is in contact with the rivet 5 with the rising portion 42 disposed so as to surround the side surface of the rivet shaft, and further, the rising portion 42 is in contact with the head of the crushed rivet 5 and the second rivet 5. As a result, the contact area between the rivet 5 and the electrode tab 4 increases. As a result, the contact resistance between the electrode tab 4 and the rivet 5 can be reduced, and the ESR of the entire electrolytic capacitor can be reduced.
次に別の実施形態について説明する。図７に示すように、リベットとして、鍔部５１が形成された断面が十字形状のリベット５０を用いることもできる。このようなリベット５０を使用した場合、鍔部が先の実施の形態での第一のワッシャの機能を果たすため、第一のワッシャを省略することができる。 Next, another embodiment will be described. As shown in FIG. 7, a rivet 50 having a cross-shaped cross section in which the flange portion 51 is formed can be used as the rivet. When such a rivet 50 is used, the first washer can be omitted because the collar portion functions as the first washer in the previous embodiment.
１ コンデンサ素子
２ 外装ケース
３ 封口板
４ 電極タブ
４１ 接続孔
４２ 立ち上がり部
４４ 金属屑
５ リベット
６ 外部端子
７ 第二のワッシャ
７１ 凹部
９ 第一のワッシャ
５０ リベット
５１ 鍔部
DESCRIPTION OF SYMBOLS 1 Capacitor element 2 Exterior case 3 Sealing plate 4 Electrode tab 41 Connection hole 42 Standing part 44 Metal scrap 5 Rivet 6 External terminal 7 Second washer 71 Concave part 9 First washer 50 Rivet 51 Hook
Claims (2)
前記ワッシャに中心孔近傍が肉薄となる凹部を設けるとともに、
前記電極タブの端部に、周囲に立ち上がり部を有するリベット挿入用の接続孔を設け、この立ち上がり部を前記ワッシャの中心孔に挿通させ、
前記リベットを押しつぶして、前記電極タブの立ち上がり部を、押しつぶしたリベットとワッシャの凹部との間で押圧して固定した電解コンデンサ。 Capacitor element in which anode foil and cathode foil are wound through a separator, and electrode tabs are led out from the winding end face, a bottomed cylindrical outer case that houses this capacitor element, and external terminals are fixed and penetrated through the front and back In an electrolytic capacitor comprising a sealing plate having a rivet for fixing an electrode tab to a rivet through a washer,
The washer is provided with a recess in which the vicinity of the center hole is thin,
A connection hole for inserting a rivet having a rising portion around the end of the electrode tab is provided, and this rising portion is inserted through the central hole of the washer.
An electrolytic capacitor in which the rivet is crushed and the rising portion of the electrode tab is pressed and fixed between the crushed rivet and the recess of the washer.
前記電極タブの端部に、周囲に立ち上がり部を有するリベット挿入用の接続孔を設ける工程と、
リベットに電極タブの接続孔を挿通させる工程と、
中心孔近傍が肉薄となる凹部を設けてなるワッシャを前記リベットに挿通し、前記電極タブの立ち上がり部が前記ワッシャの中心孔を貫通して、前記ワッシャの上面より突出させる工程と、
前記リベットを押しつぶして、前記電極タブの立ち上がり部を、押しつぶしたリベットとワッシャの凹部との間で押圧して固定する工程を含む
電解コンデンサの製造方法。 Capacitor element in which anode foil and cathode foil are wound through a separator, and electrode tabs are led out from the winding end face, a bottomed cylindrical outer case that houses this capacitor element, and external terminals are fixed and penetrated through the front and back In a method of manufacturing an electrolytic capacitor comprising a sealing plate having a rivet, and fixing an electrode tab to a rivet through a washer,
A step of providing a connection hole for inserting a rivet having a rising portion around the end of the electrode tab; and
Inserting the electrode tab connection hole into the rivet;
Inserting a washer provided with a concave portion in the vicinity of the center hole through the rivet, the rising portion of the electrode tab passing through the center hole of the washer, and projecting from the upper surface of the washer;
A method of manufacturing an electrolytic capacitor, comprising: crushing the rivet and pressing and fixing a rising portion of the electrode tab between the crushed rivet and a recess of the washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008094004A JP5105241B2 (en) | 2008-03-31 | 2008-03-31 | Electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008094004A JP5105241B2 (en) | 2008-03-31 | 2008-03-31 | Electrolytic capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2009246287A true JP2009246287A (en) | 2009-10-22 |
| JP5105241B2 JP5105241B2 (en) | 2012-12-26 |
Family
ID=41307835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008094004A Active JP5105241B2 (en) | 2008-03-31 | 2008-03-31 | Electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5105241B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011204725A (en) * | 2010-03-24 | 2011-10-13 | Hitachi Aic Inc | Aluminum electrolytic capacitor |
| WO2019192726A1 (en) * | 2018-04-06 | 2019-10-10 | Tdk Electronics Ag | Electrolytic capacitor with improved connection part |
| JP2020170834A (en) * | 2019-04-02 | 2020-10-15 | 株式会社トップパーツ | Capacitor seal, manufacturing method thereof, and capacitor |
| CN111937107A (en) * | 2018-04-06 | 2020-11-13 | Tdk电子股份有限公司 | Electrolytic capacitor with improved connection |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147812U (en) * | 1984-03-12 | 1985-10-01 | 片岡 護 | Washer |
| JPH1070042A (en) * | 1996-08-27 | 1998-03-10 | Matsushita Electric Ind Co Ltd | Method of connecting tab lead of electrolytic capacitor with aluminum rivet |
| JP2002299188A (en) * | 2001-03-30 | 2002-10-11 | Nippon Chemicon Corp | Capacitor |
-
2008
- 2008-03-31 JP JP2008094004A patent/JP5105241B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60147812U (en) * | 1984-03-12 | 1985-10-01 | 片岡 護 | Washer |
| JPH1070042A (en) * | 1996-08-27 | 1998-03-10 | Matsushita Electric Ind Co Ltd | Method of connecting tab lead of electrolytic capacitor with aluminum rivet |
| JP2002299188A (en) * | 2001-03-30 | 2002-10-11 | Nippon Chemicon Corp | Capacitor |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011204725A (en) * | 2010-03-24 | 2011-10-13 | Hitachi Aic Inc | Aluminum electrolytic capacitor |
| WO2019192726A1 (en) * | 2018-04-06 | 2019-10-10 | Tdk Electronics Ag | Electrolytic capacitor with improved connection part |
| CN111937108A (en) * | 2018-04-06 | 2020-11-13 | Tdk电子股份有限公司 | Electrolytic capacitor with improved connection |
| CN111937107A (en) * | 2018-04-06 | 2020-11-13 | Tdk电子股份有限公司 | Electrolytic capacitor with improved connection |
| JP2021518055A (en) * | 2018-04-06 | 2021-07-29 | ティーディーケイ・エレクトロニクス・アクチェンゲゼルシャフトＴｄｋ Ｅｌｅｃｔｒｏｎｉｃｓ Ａｇ | Electrolytic capacitors with improved connections |
| JP7080990B2 (en) | 2018-04-06 | 2022-06-06 | ティーディーケイ・エレクトロニクス・アクチェンゲゼルシャフト | Electrolytic capacitors with improved connections |
| CN111937107B (en) * | 2018-04-06 | 2022-09-02 | Tdk电子股份有限公司 | Electrolytic capacitor with improved connection |
| US11437197B2 (en) | 2018-04-06 | 2022-09-06 | Tdk Electronics Ag | Electrolytic capacitor with improved connection part |
| US11456119B2 (en) | 2018-04-06 | 2022-09-27 | Tdk Electronics Ag | Electrolytic capacitor with improved connection part |
| JP2020170834A (en) * | 2019-04-02 | 2020-10-15 | 株式会社トップパーツ | Capacitor seal, manufacturing method thereof, and capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5105241B2 (en) | 2012-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6037196B2 (en) | Method for manufacturing power storage element | |
| KR101072648B1 (en) | Terminal unit and method of manufacturing the same | |
| EP3185267B1 (en) | Capacitor and manufacturing method therefor | |
| JP2008109074A (en) | Electrolytic capacitor | |
| JP6398655B2 (en) | Battery and manufacturing method thereof | |
| JP5105241B2 (en) | Electrolytic capacitor | |
| TWI640024B (en) | Electronic parts | |
| JP4590911B2 (en) | battery | |
| JP2014072273A (en) | Aluminum electrolytic capacitor | |
| JP2010123648A (en) | Electricity accumulation unit | |
| JP2004087892A (en) | Aluminum electrolytic capacitor and its manufacturing method | |
| JP6704826B2 (en) | Electronic component manufacturing method and electronic component | |
| JP2003187779A (en) | Battery | |
| JP2016046388A (en) | Capacitor and method of manufacturing the same | |
| JP2013077651A (en) | Capacitor and manufacturing method of capacitor | |
| JP6390266B2 (en) | Capacitor manufacturing method | |
| JP2008210823A (en) | Lead wire and electronic component including the same | |
| JP6305682B2 (en) | Aluminum electrolytic capacitor and manufacturing method thereof | |
| JP3829536B2 (en) | Electrolytic capacitor | |
| JP7214964B2 (en) | Capacitor manufacturing method | |
| CN111937108B (en) | Electrolytic capacitor with improved connection | |
| JP6893123B2 (en) | Electronic components | |
| JP2009088211A (en) | Capacitor and method of manufacturing the same | |
| JP2020170834A (en) | Capacitor seal, manufacturing method thereof, and capacitor | |
| JP2012094854A (en) | Capacitor and manufacturing method of the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20110330 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20110330 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20120321 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20120827 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20120907 |
|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20120920 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5105241 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151012 Year of fee payment: 3 |