JP2017168810A - Lead wire terminal for electrolytic capacitor, electrolytic capacitor and method for manufacturing electrolytic capacitor - Google Patents

Lead wire terminal for electrolytic capacitor, electrolytic capacitor and method for manufacturing electrolytic capacitor Download PDF

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JP2017168810A
JP2017168810A JP2016206880A JP2016206880A JP2017168810A JP 2017168810 A JP2017168810 A JP 2017168810A JP 2016206880 A JP2016206880 A JP 2016206880A JP 2016206880 A JP2016206880 A JP 2016206880A JP 2017168810 A JP2017168810 A JP 2017168810A
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flat plate
lead wire
shape
rod
plate portion
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JP6550363B2 (en
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学 山▲崎▼
Manabu Yamazaki
学 山▲崎▼
治人 荒木
Haruto Araki
治人 荒木
克俊 日比野
Katsutoshi Hibino
克俊 日比野
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Kohoku Kogyo Co Ltd
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Kohoku Kogyo Co Ltd
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Priority to KR1020170016118A priority Critical patent/KR102209007B1/en
Priority to TW108123938A priority patent/TWI722481B/en
Priority to TW106105254A priority patent/TWI693620B/en
Priority to CN201910553628.7A priority patent/CN110223843B/en
Priority to CN201710091614.9A priority patent/CN107180701B/en
Publication of JP2017168810A publication Critical patent/JP2017168810A/en
Priority to KR1020190071201A priority patent/KR102209009B1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/008Terminals
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/02Single bars, rods, wires, or strips

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a lead wire terminal for a capacitor, which never increases the manufacturing cost, which can suppress a damage to electrode foil owing to the burr of a flat plate part of a tab terminal, and which can suppress the formation of a crack in a boundary part of the flat plate part and a rod-like part of the tab terminal.SOLUTION: A lead wire terminal for an electrolytic capacitor comprises: a tab terminal 10 formed by a metal rod; and a lead wire 20 connected to one end thereof. The tab terminal has a rod-like part 11 on one end side, and a flat plate part 12 on the other end side. The flat plate part is formed by pressing a metal rod into a flat plate form and cutting its outer periphery in one direction along its thickness direction. In the lead wire terminal, a reinforcement part 13 is formed on at least one of a first boundary part P1 between the rod-like part and the flat plate part on one face 12a of the flat plate part, and a second boundary part P2 between the rod-like part and the flat plate part on the other face 12b of the flat plate part, and the form of the first boundary part is different from that of the second boundary part.SELECTED DRAWING: Figure 5

Description

本発明は、電解コンデンサ用のリード線端子、電解コンデンサ及び電解コンデンサの製造方法に関する。   The present invention relates to a lead wire terminal for an electrolytic capacitor, an electrolytic capacitor, and a method for manufacturing the electrolytic capacitor.

周知のように、電解コンデンサ用のリード線端子は、金属棒によって形成されたタブ端子と、その一端に接続されたリード線とを備えている。タブ端子は、一端側に棒状部を有するとともに他端側に平板部を有している。平板部は、金属棒の一部を平板状にプレス加工するとともに、その外周を厚み方向に沿って切断することにより形成される。   As is well known, a lead wire terminal for an electrolytic capacitor includes a tab terminal formed of a metal rod and a lead wire connected to one end thereof. The tab terminal has a rod-like portion on one end side and a flat plate portion on the other end side. The flat plate portion is formed by pressing a part of the metal rod into a flat plate shape and cutting the outer periphery along the thickness direction.

このようにして製造されたリード線端子は、リード線接続装置に投入され、パーツフィーダによって搬送されて、タブ端子の平板部が電極箔の一方の面に載置される。
そして、タブ端子の平板部がカシメ等によって電極箔に固定され、プラス側の電極箔とマイナス側の電極箔との間にセパレータを介在させた状態で、両電極箔が一対のタブ端子の周囲にロール状に巻回されてコンデンサ素子が形成される。
次いで、このコンデンサ素子に電解液が含浸され、コンデンサ素子から突出している一対のリード線が円盤状の封口体に形成された一対の貫通孔のいずれかに挿通される。そして、コンデンサ素子及び封口体が有底円筒状の外装ケースに収納され、外装ケースの開口端が絞り加工されて、封口体が外装ケースの開口端に固定される。
The lead wire terminal manufactured in this way is put into a lead wire connecting device, conveyed by a parts feeder, and the flat portion of the tab terminal is placed on one surface of the electrode foil.
Then, the flat portion of the tab terminal is fixed to the electrode foil by caulking or the like, and both electrode foils surround the pair of tab terminals with a separator interposed between the positive electrode foil and the negative electrode foil. The capacitor element is formed by being wound in a roll shape.
Next, the capacitor element is impregnated with an electrolytic solution, and a pair of lead wires protruding from the capacitor element is inserted into one of a pair of through holes formed in a disk-shaped sealing body. The capacitor element and the sealing body are housed in a bottomed cylindrical outer case, the opening end of the outer case is drawn, and the sealing body is fixed to the opening end of the outer case.

上記のようにして製造される電解コンデンサには、以下に述べるような問題点がある。すなわち、リード線端子のタブ端子を製造する際に、平板部の外周を厚み方向に沿って一方向に切断するため、平板部の一方の面の外周からバリが突出した状態になる。このようなバリが電極箔に接すると、電極箔が損傷してコンデンサ性能が損なわれる虞がある。   The electrolytic capacitor manufactured as described above has the following problems. That is, when manufacturing the tab terminal of the lead wire terminal, since the outer periphery of the flat plate portion is cut in one direction along the thickness direction, the burr protrudes from the outer periphery of one surface of the flat plate portion. If such burrs come into contact with the electrode foil, the electrode foil may be damaged and the capacitor performance may be impaired.

特許文献1には、上記問題点の解消を図ったリード線端子の製造装置が開示されている。
この製造装置では、タブ端子の平板部の外周を形成する切断機構が、切込用切刃と、その下方に配置された切除用切刃とを備えている。
この切断機構は、金属棒の一部が平板状にプレス加工された後、まず、切込用切刃を下降させて平板状の部分の外周に切り込み線を形成する。
次いで、切断機構は、切除用切刃を上昇させて切り込み線の周囲の部分を切り込み線に沿って切除する。
Patent Document 1 discloses a lead wire terminal manufacturing apparatus that solves the above problems.
In this manufacturing apparatus, the cutting mechanism that forms the outer periphery of the flat plate portion of the tab terminal includes a cutting blade and a cutting blade disposed below the cutting blade.
In this cutting mechanism, after a part of the metal rod is pressed into a flat plate shape, first, the cutting blade is lowered to form a cut line on the outer periphery of the flat plate portion.
Next, the cutting mechanism raises the cutting blade for cutting and cuts a portion around the cutting line along the cutting line.

このようにして形成される平板部では、その両面からバリが突出しにくくなるため、平板部の周囲に巻き付けられる電極箔がバリで損傷するのを抑制することができる。   In the flat plate portion formed in this way, the burrs are difficult to protrude from both surfaces thereof, so that the electrode foil wound around the flat plate portion can be prevented from being damaged by the burrs.

特開2003−347174号公報JP 2003-347174 A

しかしながら、特許文献1の技術の場合、タブ端子の平板部の外周を形成する際に、切込用切刃を下降させて切り込み線を形成する工程と、切除用切刃を上昇させて切り込み線の周囲の部分を除去する工程との二工程を必要とするため、タブ端子の製造工数が増加して製造コストの上昇を招くという問題点がある。   However, in the case of the technique of Patent Document 1, when forming the outer periphery of the flat plate portion of the tab terminal, a step of lowering the cutting blade to form a cutting line, and a step of raising the cutting blade to cut the cutting line This requires two steps including the step of removing the peripheral portion of the wire, and there is a problem in that the number of man-hours for manufacturing the tab terminal increases and the manufacturing cost increases.

また、近年、自動車等に使用されるリード線端子において、振動によってタブ端子の平板部と棒状部との境界部に荷重が繰り返し作用すると、境界部に亀裂が生じることがあるため、斯かる不具合の発生を抑制することができるリード線端子が希求されている   Further, in recent years, in lead wire terminals used in automobiles and the like, if a load repeatedly acts on the boundary portion between the flat plate portion and the rod-shaped portion of the tab terminal due to vibration, the boundary portion may be cracked. There is a need for lead wire terminals that can suppress the occurrence of

本発明は上記事情に鑑みて創案されたものであり、その目的は、製造コストの上昇を招くことなく、タブ端子の平板部のバリによる電極箔の損傷を抑制することができるとともに、タブ端子の平板部と棒状部との境界部に亀裂が生じるのを抑制することができるコンデンサ用のリード線端子を提供することにある。   The present invention was devised in view of the above circumstances, and its purpose is to suppress the damage of the electrode foil due to burrs on the flat portion of the tab terminal without incurring an increase in manufacturing cost, and the tab terminal. An object of the present invention is to provide a lead terminal for a capacitor capable of suppressing the occurrence of cracks at the boundary between the flat plate portion and the rod-shaped portion.

上記目的を達成するために、本発明は、金属棒によって形成されたタブ端子と、その一端に接続されたリード線とを備える電解コンデンサ用のリード線端子であって、前記タブ端子は、一端側に棒状部を有するとともに他端側に平板部を有しており、前記平板部は、前記金属棒の一部が平板状にプレス加工されているとともに、その外周が厚み方向に沿って一方向に切断されてなり、前記平板部の一方の面における前記棒状部と前記平板部との間の第1境界部と、前記平板部の他方の面における前記棒状部と前記平板部との間の第2境界部との少なくとも一方に、前記棒状部と前記平板部との間に跨る補強部が形成されており、前記第1境界部の形状と前記第2境界部の形状とが異なっている。   In order to achieve the above object, the present invention is a lead terminal for an electrolytic capacitor comprising a tab terminal formed of a metal rod and a lead wire connected to one end of the tab terminal. It has a rod-shaped part on the side and a flat plate part on the other end side, and the flat plate part has a part of the metal bar pressed into a flat plate shape, and its outer periphery is aligned along the thickness direction. 1st boundary part between the said rod-shaped part in one surface of the said flat plate part, and the said flat plate part, and between the said rod-shaped part in the other surface of the said flat plate part, and the said flat plate part. A reinforcing portion straddling between the rod-shaped portion and the flat plate portion is formed on at least one of the second boundary portion, and the shape of the first boundary portion is different from the shape of the second boundary portion. Yes.

本発明によれば、コンデンサ用のリード線端子の製造コストの上昇を招くことなく、タブ端子の平板部のバリによる電極箔の損傷を抑制することができるとともに、タブ端子の平板部と棒状部との境界部に亀裂が生じるのを抑制することができる。   According to the present invention, it is possible to suppress damage to the electrode foil due to burrs on the flat plate portion of the tab terminal without incurring an increase in the manufacturing cost of the lead terminal for the capacitor, and the flat plate portion and the rod-shaped portion of the tab terminal. It can suppress that a crack arises in the boundary part.

本発明によるリード線端子の斜視図である。It is a perspective view of the lead wire terminal by the present invention. 本発明による電解コンデンサのコンデンサ素子の端面の概略を示す図である。It is a figure which shows the outline of the end surface of the capacitor | condenser element of the electrolytic capacitor by this invention. 図2の要部拡大図である。FIG. 3 is an enlarged view of a main part of FIG. 2. 本発明による電解コンデンサの縦断面図である。It is a longitudinal cross-sectional view of the electrolytic capacitor by this invention. 第1実施形態のリード線端子のタブ端子の平面図、側面図、及び底面図である。It is the top view, side view, and bottom view of the tab terminal of the lead wire terminal of 1st Embodiment. 第2実施形態のリード線端子のタブ端子の平面図、側面図、及び底面図である。It is the top view, side view, and bottom view of the tab terminal of the lead wire terminal of 2nd Embodiment. 第3実施形態のリード線端子のタブ端子の平面図、側面図、及び底面図である。It is the top view, side view, and bottom view of the tab terminal of the lead wire terminal of 3rd Embodiment. 第4実施形態のリード線端子のタブ端子の平面図、側面図、及び底面図である。It is the top view, side view, and bottom view of the tab terminal of the lead wire terminal of 4th Embodiment. 本発明によるリード線端子の耐振性能を確認するための測定方法の説明図である。It is explanatory drawing of the measuring method for confirming the vibration proof performance of the lead wire terminal by this invention. 第5実施形態のリード線端子の斜視図である。It is a perspective view of the lead wire terminal of a 5th embodiment. 第6実施形態のリード線端子の斜視図である。It is a perspective view of the lead wire terminal of a 6th embodiment. 第7実施形態のリード線端子の斜視図である。It is a perspective view of the lead wire terminal of a 7th embodiment. 第8実施形態のリード線端子の斜視図である。It is a perspective view of the lead wire terminal of an 8th embodiment. 第9実施形態のリード線端子の斜視図である。It is a perspective view of the lead wire terminal of a 9th embodiment.

以下、図面を参照して本発明の実施形態を説明する。
図1に示すように、リード線端子1は、金属棒によって形成されたタブ端子10と、その一端に接続されたリード線20とを備えている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the lead wire terminal 1 includes a tab terminal 10 formed of a metal rod and a lead wire 20 connected to one end thereof.

リード線20は、例えば、鉄線の外周面に銅層を設けたCP線によってよって形成され、溶接等によってタブ端子10に接続される。   The lead wire 20 is formed by, for example, a CP wire in which a copper layer is provided on the outer peripheral surface of an iron wire, and is connected to the tab terminal 10 by welding or the like.

タブ端子10は、例えば、アルミニウム製の丸棒をプレス加工することにより形成され、一端側に棒状部11を有するとともに他端側に平板部12を有している。 The tab terminal 10 is formed by, for example, pressing a round bar made of aluminum, and has a rod-like portion 11 on one end side and a flat plate portion 12 on the other end side.

平板部12は、金属棒の一部を平板状にプレス加工するとともに、その外周を厚み方向に沿って一方向に切断することにより形成される。   The flat plate portion 12 is formed by pressing a part of a metal rod into a flat plate shape and cutting the outer periphery in one direction along the thickness direction.

平板部12の外周には、平板部12を切断する際に生じたバリが形成されている。このバリは、平板部12の外周から平板部12の切断方向に突出している。
例えば、平板部12の外周の切断方向を図1の矢印A方向とすると、バリは、平板部12の他方の面12bの外周から下向きに突出することになる。
On the outer periphery of the flat plate portion 12, burrs generated when the flat plate portion 12 is cut are formed. The burr protrudes from the outer periphery of the flat plate portion 12 in the cutting direction of the flat plate portion 12.
For example, if the cutting direction of the outer periphery of the flat plate portion 12 is the direction of arrow A in FIG. 1, the burr protrudes downward from the outer periphery of the other surface 12 b of the flat plate portion 12.

このリード線端子1では、平板部12の一方の面12aにおける棒状部11と平板部12との間の第1境界部P1の形状と、平板部12の他方の面12bにおける棒状部11と平板部12との間の第2境界部P2(図5参照)の形状とが異なっている。
このようにすると、平板部12の一方の面12aと他方の面12bとを機械的に識別可能となるため、平板部12の一方の面12aが必ず電極箔の一方の面に接するようにリード線端子1を搬送可能となる。
In this lead wire terminal 1, the shape of the first boundary portion P <b> 1 between the rod-like portion 11 and the flat plate portion 12 on one surface 12 a of the flat plate portion 12, and the rod-like portion 11 and the flat plate on the other surface 12 b of the flat plate portion 12. The shape of the 2nd boundary part P2 (refer FIG. 5) between the parts 12 differs.
In this way, the one surface 12a and the other surface 12b of the flat plate portion 12 can be mechanically discriminated, so that the one surface 12a of the flat plate portion 12 is always in contact with one surface of the electrode foil. The wire terminal 1 can be transported.

リード線端子1が取り付けられたプラス側の電極箔と、リード線端子1が取り付けられたマイナス側の電極箔とを、それらの間にセパレータを介在させた状態で巻回すると、図2に示したように、互いに平行に配置された一対のリード線端子1と、それらの周囲にロール状に巻回された電極箔30とを含むコンデンサ素子40が形成される。   When the plus side electrode foil to which the lead wire terminal 1 is attached and the minus side electrode foil to which the lead wire terminal 1 is attached are wound with a separator interposed therebetween, it is shown in FIG. As described above, the capacitor element 40 including the pair of lead wire terminals 1 arranged in parallel to each other and the electrode foil 30 wound in a roll shape around them is formed.

すなわち、本発明による電解コンデンサの製造工程は、リード線端子1を複数本準備する工程と、第1境界部P1の形状と第2境界部P2の形状との違いに基づいて平板部12の一方の面12aと他方の面12bとを識別する工程と、平板部12の一方の面12aが電極箔30の一方の面に接するようにリード線端子1を搬送する工程と、リード線端子1が取り付けられたプラス側の電極箔30と、リード線端子1が取り付けられたマイナス側の電極箔30とを、それらの間にセパレータを介在させた状態で巻回してコンデンサ素子40を形成する工程とを含んでいる。   That is, the manufacturing process of the electrolytic capacitor according to the present invention is based on the difference between the step of preparing a plurality of lead wire terminals 1 and the shape of the first boundary portion P1 and the shape of the second boundary portion P2. The step of discriminating between the surface 12a and the other surface 12b, the step of conveying the lead wire terminal 1 so that the one surface 12a of the flat plate portion 12 is in contact with one surface of the electrode foil 30, and the lead wire terminal 1 Winding the attached positive electrode foil 30 and the negative electrode foil 30 to which the lead wire terminal 1 is attached with a separator interposed therebetween to form a capacitor element 40; Is included.

一対のリード線端子1は、それらの平板部12の他方の面12b同士が対向した状態になっている。この場合、図3に示すように、平板部12の外周の切断によって生じたバリ12cはコンデンサ素子40の中心側に突出するため、バリ12cは電極箔30に当接しない。したがって、バリ12cが電極箔30を損傷することがない。   The pair of lead wire terminals 1 are in a state in which the other surfaces 12b of the flat plate portions 12 face each other. In this case, as shown in FIG. 3, the burr 12 c generated by cutting the outer periphery of the flat plate portion 12 protrudes toward the center side of the capacitor element 40, so that the burr 12 c does not contact the electrode foil 30. Therefore, the burr 12 c does not damage the electrode foil 30.

そして、コンデンサ素子40に電解液が含浸され、コンデンサ素子40の端面から突出している一対のリード線20(図4参照)が円盤状の封口体50に形成された一対の貫通孔51のいずれかに挿通される。   Then, the capacitor element 40 is impregnated with an electrolytic solution, and a pair of lead wires 20 (see FIG. 4) protruding from the end face of the capacitor element 40 is one of the pair of through holes 51 formed in the disk-shaped sealing body 50. Is inserted.

そして、コンデンサ素子40及び封口体50が有底円筒状の外装ケース60に収納され、外装ケース60の開口端が絞り加工されて、封口体50が外装ケース60の開口端に固定される。   Then, the capacitor element 40 and the sealing body 50 are accommodated in the bottomed cylindrical outer case 60, the opening end of the outer case 60 is drawn, and the sealing body 50 is fixed to the opening end of the outer case 60.

さらに、製品名、メーカ名等が記載された円筒状のシュリンクフィルム(図示せず)が外装ケース60の外周に嵌着され、このシュリンクフィルムが熱収縮されて、図4に示すような電解コンデンサ100となる。   Further, a cylindrical shrink film (not shown) on which the product name, manufacturer name, etc. are written is fitted on the outer periphery of the outer case 60, and the shrink film is heat-shrinked, so that the electrolytic capacitor as shown in FIG. 100.

次に、第1実施形態のリード線端子1の第1境界部P1と第2境界部P2の形状について説明する。
図5において、(a)は第1実施形態のタブ端子10の平面図、(b)は側面図、(c)は底面図である。
なお、以下の各実施形態においては、それ以前に説明した部分と同一又は類似の部分に同一の符号を使用し、重複する説明は省略するものとする。
Next, the shape of the 1st boundary part P1 and the 2nd boundary part P2 of the lead wire terminal 1 of 1st Embodiment is demonstrated.
5A is a plan view of the tab terminal 10 of the first embodiment, FIG. 5B is a side view, and FIG. 5C is a bottom view.
In the following embodiments, the same reference numerals are used for parts that are the same as or similar to the parts described before, and redundant descriptions are omitted.

図5(a)、(b)に示すように、第1実施形態のタブ端子10では、平板部12の一方の面12aにおける棒状部11と平板部12との間の第1境界部P1に補強リブ13(補強部)が形成されている。   As shown in FIGS. 5A and 5B, in the tab terminal 10 of the first embodiment, the first boundary portion P <b> 1 between the rod-like portion 11 and the flat plate portion 12 on one surface 12 a of the flat plate portion 12 is provided. Reinforcing ribs 13 (reinforcing portions) are formed.

補強リブ13は、棒状部11と平板部12との間に跨るように形成されている。
すなわち、棒状部11は、平板部12との接続端に一対の傾斜端面(11a、11b)を有しており、一方の傾斜端面11aは棒状部11の外周面及び平板部12の一方の面12aと交差しており、他方の傾斜端面11bは棒状部11の外周面及び平板部12の他方の面12bと交差している。
The reinforcing rib 13 is formed so as to straddle between the rod-shaped portion 11 and the flat plate portion 12.
That is, the rod-shaped portion 11 has a pair of inclined end surfaces (11a, 11b) at the connection end with the flat plate portion 12, and one inclined end surface 11a is the outer peripheral surface of the rod-shaped portion 11 and one surface of the flat plate portion 12. The other inclined end surface 11 b intersects the outer peripheral surface of the rod-shaped portion 11 and the other surface 12 b of the flat plate portion 12.

補強リブ13は、一方の傾斜端面11aと平板部12の一方の面12aとの間に跨るように形成されている。
補強リブ13は、平板部12を水平にした状態で、平面視略半円状を呈するとともに、棒状部11の軸線に沿った縦断面形状が三角形状を成すように形成されている。
The reinforcing rib 13 is formed so as to straddle between one inclined end surface 11 a and one surface 12 a of the flat plate portion 12.
The reinforcing rib 13 has a substantially semicircular shape in plan view in a state where the flat plate portion 12 is horizontal, and is formed so that a longitudinal sectional shape along the axis of the rod-like portion 11 forms a triangular shape.

一方、図5(c)に示すように、平板部12の他方の面12bにおける棒状部11と平板部12との間の第2境界部P2には、補強リブ13が設けられていない。   On the other hand, as shown in FIG. 5C, the reinforcing rib 13 is not provided at the second boundary portion P <b> 2 between the rod-like portion 11 and the flat plate portion 12 on the other surface 12 b of the flat plate portion 12.

このように、第1境界部P1の形状と第2境界部P2の形状とを異ならせることにより、平板部12の一方の面12aと他方の面12bとを機械的に識別可能となるため、平板部12の一方の面12aが必ず電極箔30に接するように、リード線端子をパーツフィーダによって搬送することができる。   Thus, by making the shape of the first boundary portion P1 and the shape of the second boundary portion P2 different, it becomes possible to mechanically identify the one surface 12a and the other surface 12b of the flat plate portion 12, The lead wire terminal can be conveyed by the parts feeder so that the one surface 12a of the flat plate portion 12 is always in contact with the electrode foil 30.

また、補強リブ13は、平板部12をプレス加工する際に同時形成できるため、製造工数が増加しない。
したがって、製造コストの上昇を招くことなく、平板部12のバリによる電極箔30の損傷を抑制することができる
また、補強リブ13を設けることにより、平板部12が棒状部11に対して撓みにくくなるため、第1境界部P1と第2境界部P2に亀裂が発生するのを抑制することができる。
Moreover, since the reinforcing rib 13 can be formed simultaneously when the flat plate portion 12 is pressed, the number of manufacturing steps does not increase.
Therefore, damage to the electrode foil 30 due to burrs on the flat plate portion 12 can be suppressed without causing an increase in manufacturing cost. Further, by providing the reinforcing ribs 13, the flat plate portion 12 is hardly bent with respect to the rod-shaped portion 11. Therefore, it can suppress that a crack generate | occur | produces in the 1st boundary part P1 and the 2nd boundary part P2.

このような構造は、自動車に用いられる電解コンデンサのような高い耐振性が要求される電解コンデンサにおいて、特に有用である。   Such a structure is particularly useful in electrolytic capacitors that require high vibration resistance, such as electrolytic capacitors used in automobiles.

次に、第2実施形態のリード線端子1の第1境界部P1と第2境界部P2の形状について説明する。
図6において、(a)は第2実施形態のタブ端子10の平面図、(b)は側面図、(c)は底面図である。
Next, the shape of the 1st boundary part P1 and the 2nd boundary part P2 of the lead wire terminal 1 of 2nd Embodiment is demonstrated.
6A is a plan view of the tab terminal 10 of the second embodiment, FIG. 6B is a side view, and FIG. 6C is a bottom view.

本実施形態では、平板部12の一方の面12aにおける棒状部11と平板部12との間の第1境界部P1に補強リブ14(補強部)が形成されている。   In this embodiment, the reinforcing rib 14 (reinforcing part) is formed in the 1st boundary part P1 between the rod-shaped part 11 and the flat plate part 12 in the one surface 12a of the flat plate part 12. As shown in FIG.

補強リブ14は、平板部12を水平にした状態で、平面視略矩形状を呈するとともに、棒状部11の軸線に沿った縦断面形状が三角形状を成すように形成されている。   The reinforcing rib 14 has a substantially rectangular shape in plan view in a state where the flat plate portion 12 is horizontal, and is formed so that a longitudinal sectional shape along the axis of the rod-like portion 11 forms a triangular shape.

本実施形態においても、第1実施形態と同様に、製造コストの上昇を招くことなく、平板部12のバリによる電極箔30の損傷を抑制することができる。
また、平板部12が棒状部11に対して撓みにくくなるため、第1境界部P1及び第2境界部P2に亀裂が発生するのを抑制することができる。
Also in the present embodiment, as in the first embodiment, damage to the electrode foil 30 due to burrs on the flat plate portion 12 can be suppressed without increasing the manufacturing cost.
Moreover, since it becomes difficult for the flat plate part 12 to bend with respect to the rod-shaped part 11, it can suppress that a crack generate | occur | produces in the 1st boundary part P1 and the 2nd boundary part P2.

次に、第3実施形態のリード線端子1の第1境界部P1と第2境界部P2の形状について説明する。
図7において、(a)は第3実施形態のタブ端子10の平面図、(b)は側面図、(c)は底面図である。
Next, the shape of the 1st boundary part P1 and the 2nd boundary part P2 of the lead wire terminal 1 of 3rd Embodiment is demonstrated.
7A is a plan view of the tab terminal 10 of the third embodiment, FIG. 7B is a side view, and FIG. 7C is a bottom view.

本実施形態では、平板部12の一方の面12aにおける棒状部11と平板部12との間の第1境界部P1に平面視矩形状の補強リブ15(補強部)が形成されている。
この補強リブ15の上面15aは、棒状部11の軸線に沿った縦断面形状が円弧状(Radius形状)を呈しており、凹面となっている。この上面15aの曲率半径は特に限定されないが、例えば、1.5mmとすることができる。
In the present embodiment, a reinforcing rib 15 (reinforcing portion) having a rectangular shape in plan view is formed at the first boundary portion P1 between the rod-like portion 11 and the flat plate portion 12 on one surface 12a of the flat plate portion 12.
The upper surface 15a of the reinforcing rib 15 has a concave surface in which the longitudinal cross-sectional shape along the axis of the rod-like portion 11 has an arc shape (Radius shape). Although the curvature radius of this upper surface 15a is not specifically limited, For example, it can be set to 1.5 mm.

本実施形態においても、第1実施形態と同様に、製造コストの上昇を招くことなく、平板部12のバリによる電極箔30の損傷を抑制することができる。
また、平板部12が棒状部11に対して撓みにくくなるため、第1境界部P1及び第2境界部P2に亀裂が発生するのを抑制することができる。
Also in the present embodiment, as in the first embodiment, damage to the electrode foil 30 due to burrs on the flat plate portion 12 can be suppressed without increasing the manufacturing cost.
Moreover, since it becomes difficult for the flat plate part 12 to bend with respect to the rod-shaped part 11, it can suppress that a crack generate | occur | produces in the 1st boundary part P1 and the 2nd boundary part P2.

なお、補強リブ15の上面15aを凹面にすることで、応力が分散しやすくなるため、第2実施形態と比べて平板部12がより撓みにくくなる。   In addition, since it becomes easy to disperse | distribute stress by making the upper surface 15a of the reinforcement rib 15 into a concave surface, the flat plate part 12 becomes difficult to bend compared with 2nd Embodiment.

次に、第4実施形態のリード線端子1の第1境界部P1と第2境界部P2の形状について説明する。
図8において、(a)は第4実施形態のタブ端子10の平面図、(b)は側面図、(c)は底面図である。
Next, the shape of the 1st boundary part P1 and the 2nd boundary part P2 of the lead wire terminal 1 of 4th Embodiment is demonstrated.
8A is a plan view of the tab terminal 10 of the fourth embodiment, FIG. 8B is a side view, and FIG. 8C is a bottom view.

本実施形態では、平板部12の一方の面12aにおける棒状部11と平板部12との間の第1境界部P1に補強リブ13が形成されている。
また、平板部12の他方の面12bにおける棒状部11と平板部12との間の第2境界部P2に補強リブ14が形成されている。
In this embodiment, the reinforcing rib 13 is formed in the 1st boundary part P1 between the rod-shaped part 11 and the flat plate part 12 in the one surface 12a of the flat plate part 12. As shown in FIG.
A reinforcing rib 14 is formed at the second boundary portion P2 between the rod-like portion 11 and the flat plate portion 12 on the other surface 12b of the flat plate portion 12.

本実施形態においても、第1実施形態と同様に、製造コストの上昇を招くことなく、平板部12のバリによる電極箔30の損傷を抑制することができる。
また、平板部12が棒状部11に対して撓みにくくなるため、第1境界部P1及び第2境界部P2に亀裂が発生するのを抑制することができる。
Also in the present embodiment, as in the first embodiment, damage to the electrode foil 30 due to burrs on the flat plate portion 12 can be suppressed without increasing the manufacturing cost.
Moreover, since it becomes difficult for the flat plate part 12 to bend with respect to the rod-shaped part 11, it can suppress that a crack generate | occur | produces in the 1st boundary part P1 and the 2nd boundary part P2.

なお、本実施形態では、平板部12の両面に補強リブを設けているので、第1〜第3実施形態と比べて平板部12がより撓みにくくなる。   In addition, in this embodiment, since the reinforcement rib is provided in both surfaces of the flat plate part 12, the flat plate part 12 becomes difficult to bend compared with the 1st-3rd embodiment.

上記第1〜第4実施形態による平板部12の撓み抑制効果を比較するべく、以下の測定を行った。
すなわち、図9に示すように、まず、第1実施形態のタブ端子10の棒状部11を平板部12との接続端側で径方向に切断し、切断面を垂直面V.Fに固定した。
次いで、平板部12の先端に垂直上方に荷重F(2.2kgf)を付与し、平板部12の先端の上方への変位量を測定した。
In order to compare the bending suppression effect of the flat plate part 12 by the said 1st-4th embodiment, the following measurements were performed.
That is, as shown in FIG. 9, first, the rod-like portion 11 of the tab terminal 10 of the first embodiment is cut in the radial direction on the connection end side with the flat plate portion 12, and the cut surface is set to the vertical plane V. Fixed to F.
Next, a load F (2.2 kgf) was applied vertically upward to the tip of the flat plate portion 12, and the amount of displacement upward of the tip of the flat plate portion 12 was measured.

第2〜第4実施形態のタブ端子10と、補強リブ13〜15が設けられていない従来のタブ端子についても、同様の条件で測定を行った。   The measurement was performed under the same conditions for the tab terminals 10 of the second to fourth embodiments and the conventional tab terminals not provided with the reinforcing ribs 13 to 15.

そして、従来のタブ端子の変位量をLとして、第1実施形態のタブ端子の変位量L1との比率L1/Lを算出した。   And the ratio L1 / L with the displacement amount L1 of the tab terminal of 1st Embodiment was computed by making the displacement amount of the conventional tab terminal into L. FIG.

同様に、従来のタブ端子の変位量Lと第2実施形態のタブ端子の変位量L2との比率L2/L、従来のタブ端子の変位量Lと第3実施形態のタブ端子の変位量L3との比率L3/L、及び従来のタブ端子の変位量Lと第4実施形態のタブ端子の変位量L4との比率L4/Lもそれぞれ算出した。上記のようにして得られた第1〜第4実施形態のタブ端子の評価結果は下記表1に示される通りであった。   Similarly, the ratio L2 / L between the displacement amount L of the conventional tab terminal and the displacement amount L2 of the tab terminal of the second embodiment, the displacement amount L3 of the conventional tab terminal and the displacement amount L3 of the tab terminal of the third embodiment. And the ratio L4 / L between the displacement amount L of the conventional tab terminal and the displacement amount L4 of the tab terminal of the fourth embodiment were also calculated. The evaluation results of the tab terminals of the first to fourth embodiments obtained as described above were as shown in Table 1 below.

Figure 2017168810
Figure 2017168810

上記表に示すように、第4実施形態の比率L4/Lが最も小さくて、第4実施形態の耐振性が優れていることが判明した。   As shown in the above table, it was found that the ratio L4 / L of the fourth embodiment was the smallest, and the vibration resistance of the fourth embodiment was excellent.

以上、図面を参照して本発明の具体的な実施形態を説明したが、本発明は上記実施形態に限定されるものではない。
例えば、補強リブの形状と個数は上記実施形態で示したものに限定されない。すなわち、タブ端子10の平板部12のバリによる電極箔30の損傷を抑制することができるとともに、タブ端子10の平板部12と棒状部11との第1境界部P1と第2境界部P2に亀裂が生じるのを抑制することができる構成(補強部とも言う)は、上記実施形態に示した補強リブ13〜15の他にも、適宜に変更が可能である。以下に補強部の形状や構成が異なる第5〜第8実施形態を挙げる。
Although specific embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the above embodiments.
For example, the shape and number of reinforcing ribs are not limited to those shown in the above embodiment. That is, damage to the electrode foil 30 due to burrs on the flat plate portion 12 of the tab terminal 10 can be suppressed, and at the first boundary portion P1 and the second boundary portion P2 between the flat plate portion 12 and the rod-shaped portion 11 of the tab terminal 10. In addition to the reinforcing ribs 13 to 15 shown in the above embodiment, the configuration capable of suppressing the occurrence of cracks (also referred to as a reinforcing portion) can be appropriately changed. The fifth to eighth embodiments in which the shape and configuration of the reinforcing portion are different will be described below.

図10に第5実施形態のリード線端子1を示した。図10(a)は、リード線端子1を平板部12における上記の他方の面12bから見たときの斜視図であり、図10(b)は第5実施形態のリード線端子1を平板部12における一方の面12aから見たときの斜視図を示している。   FIG. 10 shows the lead wire terminal 1 of the fifth embodiment. FIG. 10A is a perspective view of the lead wire terminal 1 as viewed from the other surface 12b of the flat plate portion 12, and FIG. 10B shows the lead wire terminal 1 of the fifth embodiment as a flat plate portion. 12 is a perspective view when viewed from one surface 12a.

図10(a)に示したように、第5実施形態では、第1〜第3実施形態と同様に、第2境界部P2には補強部が形成されていない。これに対し、図10(b)に示したように、一方の面12aの第1境界部P1には、第1〜第4実施形態における補強リブ13〜15と同様の機能を有する補強部が形成されており、図示した例では、一方の面12aにおける棒状部11と平板部12との間の第1境界部P1に、補強部として、上面が断面円弧状のR部16が形成されている。すなわち、第5実施形態では、第1境界部P1の全体が補強部として機能し、一方の傾斜端面11a自体がR部16の上面として棒状部11の周面と平板部12の一方の面12aとに接続されている。コンデンサ素子40では、図2や図3に示したように、電極箔30及びそれに積層されるセパレータが平板部12に巻きつけられる。そして電極箔30やセパレータの端面41(図4参照)は、R部16と平板部12との接続位置12dから平板部12の先端側に離間した位置に位置することになる。R部16の上面は、この接続位置12dでは平板部12の一方の面12aとほぼ平行な面になっている。そしてR部16の上面は滑らかに連続しており、屈曲点を持っていない。それによって、平板部12に対し、電極箔30やセパレータの端面41の位置を支点にした応力が加わっても、その力がR部16によって分散される。   As shown to Fig.10 (a), in 5th Embodiment, the reinforcement part is not formed in the 2nd boundary part P2, similarly to the 1st-3rd embodiment. On the other hand, as shown in FIG. 10B, the first boundary portion P1 of the one surface 12a has a reinforcing portion having the same function as the reinforcing ribs 13 to 15 in the first to fourth embodiments. In the illustrated example, an R portion 16 having an arcuate cross-section on the upper surface is formed as a reinforcing portion at the first boundary portion P1 between the rod-like portion 11 and the flat plate portion 12 on one surface 12a. Yes. That is, in 5th Embodiment, the whole 1st boundary part P1 functions as a reinforcement part, and one inclined end surface 11a itself is a peripheral surface of the rod-shaped part 11, and one surface 12a of the flat plate part 12 as an upper surface of the R part 16. And connected to. In the capacitor element 40, as shown in FIGS. 2 and 3, the electrode foil 30 and the separator laminated thereon are wound around the flat plate portion 12. The electrode foil 30 and the end face 41 of the separator (see FIG. 4) are located at a position separated from the connection position 12d between the R portion 16 and the flat plate portion 12 toward the tip side of the flat plate portion 12. The upper surface of the R portion 16 is substantially parallel to the one surface 12a of the flat plate portion 12 at the connection position 12d. The upper surface of the R portion 16 is smoothly continuous and has no bending point. As a result, even if stress is applied to the flat plate portion 12 with the position of the electrode foil 30 or the end face 41 of the separator as a fulcrum, the force is dispersed by the R portion 16.

そしてR部16は、平板部12をプレス加工する際に同時に形成することができる。R部16の形状は、電極箔30及びセパレータの端面41の位置から接続位置12dまでの距離D及び棒状部11の径に応じて、適切に定めることができる。そしてこのように定めた形状をプレス加工用金型に形成し、プレス加工時に転写する。   The R portion 16 can be formed at the same time when the flat plate portion 12 is pressed. The shape of the R portion 16 can be appropriately determined according to the distance D from the position of the electrode foil 30 and the end face 41 of the separator to the connection position 12 d and the diameter of the rod-like portion 11. And the shape defined in this way is formed in a press working mold, and transferred at the time of press working.

図11に示した第6の実施形態のリード線端子1では、第1境界部P1が部分的にR部116になっている。すなわち一方の傾斜端面11aの端縁から平板部12に向けてR部116が形成されている。R部116の上面は断面円弧状であり、その曲率は、金型加工に際し、平板部12の幅や棒状部11の径に応じて最適な曲率を選択すればよい。いずれにしても、R部(16、116)は、リード線端子1がコンデンサ素子(図4、符号40)に組み込まれた状態で、棒状部11から電極箔(図2または図3、符号30)及びセパレータの端面位置(図4、符号41)の近傍まで屈曲点をもたずに連続する形状によって、振動によるリード線端子1の変形を防止する。   In the lead wire terminal 1 of the sixth embodiment shown in FIG. 11, the first boundary portion P1 is partially an R portion 116. That is, the R portion 116 is formed from the end edge of one inclined end surface 11 a toward the flat plate portion 12. The upper surface of the R portion 116 has an arcuate cross section, and the curvature thereof may be selected in accordance with the width of the flat plate portion 12 and the diameter of the rod-like portion 11 in the die machining. In any case, the R portion (16, 116) is formed from the rod-like portion 11 to the electrode foil (FIG. 2 or FIG. 3, reference numeral 30) in a state where the lead wire terminal 1 is incorporated in the capacitor element (FIG. 4, reference numeral 40). ) And the end face position of the separator (FIG. 4, reference numeral 41), the lead wire terminal 1 is prevented from being deformed due to vibration by a continuous shape without a bending point.

なお第6実施形態のリード線端子1は、第5実施形態のリード線端子1と同様に、平板部12を他方の面12b側から見た場合、第2境界部P2にはR部16、116のような補強部に相当する構成が形成されておらず、その斜視図は、図10(a)に示したものと同様になる。また以下に示す第7及び第8実施形態のリード線端子1も同様に第2境界部P2には補強部が形成されていない。   Note that the lead wire terminal 1 of the sixth embodiment is similar to the lead wire terminal 1 of the fifth embodiment in that when the flat plate portion 12 is viewed from the other surface 12b side, the second boundary portion P2 has an R portion 16, A configuration corresponding to the reinforcing portion like 116 is not formed, and a perspective view thereof is the same as that shown in FIG. Similarly, the lead wire terminals 1 of the seventh and eighth embodiments described below are not provided with a reinforcing portion at the second boundary portion P2.

図12に示した第7実施形態のリード線端子1は、棒状部11と平板部12との間の第1境界部P1に補強部として凸部17を設けたものである。ここで、図中に示したように、前後、左右、上下の各方向を規定すると、凸部17は、後方から前方に向かって左右および上下方向の幅が徐々に縮幅する楔形状に形成されている。そしてこのような形状の凸部17では、応力の集中点が凸部17の周縁に沿って存在するため、応力の集中点が平板部12の幅方向に沿って直線状に存在する場合と比べて、振動によるタブ端子10の変形が生じにくい。。   The lead wire terminal 1 according to the seventh embodiment shown in FIG. 12 is provided with a convex portion 17 as a reinforcing portion at a first boundary portion P1 between the rod-like portion 11 and the flat plate portion 12. Here, as shown in the figure, when the front and rear, left and right, and up and down directions are defined, the convex portion 17 is formed in a wedge shape in which the width in the left and right and up and down directions is gradually reduced from the rear to the front. Has been. And in the convex part 17 of such a shape, since the stress concentration point exists along the periphery of the convex part 17, compared with the case where the stress concentration point exists linearly along the width direction of the flat plate part 12. Thus, the tab terminal 10 is not easily deformed by vibration. .

図13に示した第8実施形態のリード線端子1における補強部は、第7実施形態に示した凸部17と近似する形状の凸部18aと第6実施形態に示したR部116の断面形状と近似する断面円弧形状のR部18bとを組み合わせ、双方が連続的な面を形成するように形成された複合補強部18となっている。具体的には、複合補強部18は、境界部P1から平板部12における一方の面12aの先端に向かって凸部18aが形成されつつ、凸部18aと一方の面12aとの接続部分はR部18bによって、当該一方の面12aにほぼ平行な状態で滑らかに平板部12に接続する形状に形成されている。このような複合補強部18では、凸部18aと平板部12との間の接続部分の形状が連続的になり、当該接続部分に応力が集中し難い構造になる。   The reinforcing portion of the lead wire terminal 1 of the eighth embodiment shown in FIG. 13 is a cross section of the convex portion 18a having a shape similar to the convex portion 17 shown in the seventh embodiment and the R portion 116 shown in the sixth embodiment. The R portion 18b having a cross-sectional arc shape that approximates the shape is combined to form a composite reinforcing portion 18 that is formed so that both form a continuous surface. Specifically, in the composite reinforcing portion 18, a convex portion 18 a is formed from the boundary portion P 1 toward the tip of one surface 12 a of the flat plate portion 12, and a connecting portion between the convex portion 18 a and the one surface 12 a is R. The portion 18b is formed in a shape that smoothly connects to the flat plate portion 12 in a state substantially parallel to the one surface 12a. In such a composite reinforcement part 18, the shape of the connection part between the convex part 18a and the flat plate part 12 becomes continuous, and it becomes a structure in which stress is hard to concentrate on the connection part.

図14に示した第9実施形態のリード線端子1は、棒状部11における傾斜端面11aと平板部12における一方の面12aとが成す角度(すなわち第1境界部P1における一方の面12aへの接地角度)を緩和させるために傾斜部19を補強部として付加したものである。このような傾斜部19を設けることにより、第1境界部P1における平板部12への接地箇所に応力が集中し難くなる。この傾斜部19の幅は棒状部11より狭くてもよい。   The lead wire terminal 1 of the ninth embodiment shown in FIG. 14 has an angle formed between the inclined end surface 11a of the rod-shaped portion 11 and one surface 12a of the flat plate portion 12 (that is, to one surface 12a of the first boundary portion P1). In order to relax the contact angle), the inclined portion 19 is added as a reinforcing portion. By providing such an inclined portion 19, it is difficult for stress to concentrate on the ground contact portion to the flat plate portion 12 in the first boundary portion P <b> 1. The width of the inclined portion 19 may be narrower than that of the rod-shaped portion 11.

なお補強部は、上記以外にも、特に図示はしないが、棒状部11の傾斜端面11aが、平板部12における電極箔30及びセパレータの端面41の位置近傍において屈曲点をもたないように、平板部12に接続する形状であれば有効である。   In addition to the above, the reinforcing portion is not particularly illustrated, but the inclined end surface 11a of the rod-shaped portion 11 does not have a bending point in the vicinity of the position of the electrode foil 30 and the end surface 41 of the separator in the flat plate portion 12. Any shape that is connected to the flat plate portion 12 is effective.

また、平板部12の一方の面12aと他方の面12bとを識別する際には、第1境界部P1及び第2境界部P2の形状だけでなく、それ以外の部位の形状(例えば、平板部12の両側縁の形状、平板部12の断面形状、平板部12から突出しているバリ12c)も加味して識別するようにしてもよい。このようにすると、より確実に平板部12の一方の面12aと他方の面12bとを識別できるようになるため、平板部12のバリ12cによる電極箔30の損傷をより確実に抑制することができる。   Further, when identifying the one surface 12a and the other surface 12b of the flat plate portion 12, not only the shape of the first boundary portion P1 and the second boundary portion P2, but also the shape of other portions (for example, a flat plate portion) The shape may be identified in consideration of the shape of both side edges of the portion 12, the cross-sectional shape of the flat plate portion 12, and the burr 12 c protruding from the flat plate portion 12. If it does in this way, since it will become possible to distinguish one surface 12a and other surface 12b of flat plate part 12 more reliably, damage to electrode foil 30 by burr 12c of flat plate part 12 can be controlled more certainly. it can.

さらに、上記各実施形態では、第1境界部P1の形状と、第2境界部P2の形状とが異なるようにリード線端子1を形成する場合について説明したが、同じ形状であってもよい。
第1境界部P1と第2境界部P2の形状が同じであっても、上述したようにバリ12cの突出方向などを手がかりにして平板部12の一方の面12aと他方の面12bとを識別すれば、タブ端子10の平板部12のバリ12cによる電極箔30の損傷を抑制することができる。この場合、バリ12cの突出方向は、例えば、リード線端子1を平板部12の一方の面12aから見たときの、棒状部11と平板部12の総体的な形状(平板部12の両側縁の形状、平板部12の断面形状など)と、他方の面12b側から見たときの棒状部11と平板部12の総体的な形状との違いによって識別することができる。
Furthermore, although each said embodiment demonstrated the case where the lead wire terminal 1 was formed so that the shape of the 1st boundary part P1 and the shape of the 2nd boundary part P2 may differ, the same shape may be sufficient.
Even if the shapes of the first boundary portion P1 and the second boundary portion P2 are the same, as described above, the one surface 12a and the other surface 12b of the flat plate portion 12 are discriminated using the direction in which the burr 12c protrudes as a clue. If it does so, damage to the electrode foil 30 by the burr | flash 12c of the flat plate part 12 of the tab terminal 10 can be suppressed. In this case, the protruding direction of the burr 12c is, for example, the overall shape of the rod-like portion 11 and the flat plate portion 12 when the lead wire terminal 1 is viewed from one surface 12a of the flat plate portion 12 (both side edges of the flat plate portion 12). And the cross-sectional shape of the flat plate portion 12) and the overall shape of the rod-like portion 11 and the flat plate portion 12 when viewed from the other surface 12 b side.

以上説明したように、本実施形態に係るリード線端子1、電解コンデンサ100及び電解コンデンサ100の製造方法によれば、第1及び/又は第2境界部(P1、P2)に補強部に相当する構成を形成しておけば、タブ端子10の平板部12と棒状部11との第1境界部P1及び第2境界部P2に応力などに起因する亀裂の発生を抑制したり、振動による変形を防止したりすることができる。   As described above, according to the lead wire terminal 1, the electrolytic capacitor 100, and the method for manufacturing the electrolytic capacitor 100 according to the present embodiment, the first and / or second boundary portions (P1, P2) correspond to reinforcing portions. If the configuration is formed, generation of cracks due to stress or the like is suppressed in the first boundary portion P1 and the second boundary portion P2 between the flat plate portion 12 and the rod-shaped portion 11 of the tab terminal 10, or deformation due to vibration is suppressed. Can be prevented.

その他にも、本発明の要旨を逸脱しない範囲で上記実施形態に種々の改変を施すことができる。   In addition, various modifications can be made to the above embodiment without departing from the gist of the present invention.

1 リード線端子
10 タブ端子
11 棒状部
11a 一方の傾斜端面
11b 他方の傾斜端面
12 平板部
12a 一方の面
12b 他方の面
12c バリ
13 補強リブ(補強部)
14 補強リブ(補強部)
15 補強リブ(補強部)
16 R部(補強部)
17 凸部(補強部)
18 複合補強部(補強部)
19 傾斜部(補強部)
20 リード線
30 電極箔
40 コンデンサ素子
50 封口体
60 外装ケース
100 電解コンデンサ
116 R部(補強部)
P1 第1境界部
P2 第2境界部
DESCRIPTION OF SYMBOLS 1 Lead wire terminal 10 Tab terminal 11 Rod-shaped part 11a One inclination end surface 11b The other inclination end surface 12 Flat plate part 12a One surface 12b The other surface 12c Burr 13 Reinforcement rib (reinforcement part)
14 Reinforcement rib (reinforcement part)
15 Reinforcement rib (reinforcement part)
16 R part (reinforcement part)
17 Convex part (reinforcement part)
18 Composite reinforcement (reinforcement)
19 Inclined part (reinforcement part)
20 Lead wire 30 Electrode foil 40 Capacitor element 50 Sealing body 60 Exterior case 100 Electrolytic capacitor 116 R part (reinforcement part)
P1 first boundary P2 second boundary

Claims (7)

金属棒によって形成されたタブ端子と、その一端に接続されたリード線とを備える電解コンデンサ用のリード線端子であって、
前記タブ端子は、一端側に棒状部を有するとともに他端側に平板部を有しており、
前記平板部は、前記金属棒の一部が平板状にプレス加工されて、その外周が厚み方向に沿って一方向に切断されてなり、
前記平板部の一方の面における前記棒状部と前記平板部との間の第1境界部と、前記平板部の他方の面における前記棒状部と前記平板部との間の第2境界部との少なくとも一方に、前記棒状部と前記平板部との間に跨る補強部が形成されており、前記第1境界部の形状と前記第2境界部の形状とが異なっている、リード線端子。
A lead wire terminal for an electrolytic capacitor comprising a tab terminal formed by a metal rod and a lead wire connected to one end thereof,
The tab terminal has a rod-like portion on one end side and a flat plate portion on the other end side,
The flat plate part is formed by pressing a part of the metal rod into a flat plate shape, and its outer periphery is cut in one direction along the thickness direction.
A first boundary portion between the rod-shaped portion and the flat plate portion on one surface of the flat plate portion, and a second boundary portion between the rod-shaped portion and the flat plate portion on the other surface of the flat plate portion. A lead wire terminal, wherein at least one reinforcing portion is formed between the rod-like portion and the flat plate portion, and the shape of the first boundary portion and the shape of the second boundary portion are different.
前記補強部は、平面視略半円状を呈するとともに、前記棒状部の軸線に沿った縦断面形状が三角形状を成すように形成されている、請求項1記載のリード線端子。   The lead wire terminal according to claim 1, wherein the reinforcing portion has a substantially semicircular shape in plan view, and is formed such that a longitudinal cross-sectional shape along an axis of the rod-like portion forms a triangular shape. 前記補強部は、平面視矩形状を呈するとともに、前記棒状部の軸線に沿った縦断面形状が三角形状を成すように形成されている、請求項1又は2記載のリード線端子。   3. The lead wire terminal according to claim 1, wherein the reinforcing portion has a rectangular shape in a plan view and is formed such that a longitudinal cross-sectional shape along an axis of the rod-like portion forms a triangular shape. 前記補強部の上面が凹面とされている、請求項3記載のリード線端子。   The lead wire terminal according to claim 3, wherein an upper surface of the reinforcing portion is a concave surface. 互いに平行に配置された一対のリード線端子と、前記一対のリード線端子の周囲にロール状に巻回された電極箔とを含むコンデンサ素子を備える電解コンデンサであって、
一対のリード線端子の各々は、請求項1乃至請求項4のいずれかに記載のリード線端子により構成されるとともに、前記平板部の外周の切断によって生じるバリが前記コンデンサ素子の中心側に突出するように配置されている、電解コンデンサ。
An electrolytic capacitor comprising a capacitor element including a pair of lead wire terminals arranged in parallel to each other and an electrode foil wound around the pair of lead wire terminals in a roll shape,
Each of the pair of lead wire terminals is constituted by the lead wire terminal according to any one of claims 1 to 4, and a burr generated by cutting the outer periphery of the flat plate portion projects toward the center side of the capacitor element. An electrolytic capacitor that is arranged to be.
請求項5に記載の電解コンデンサの製造方法であって、
前記リード線端子を複数本準備する工程と、
前記第1境界部の形状と前記第2境界部の形状との違いに基づいて前記平板部の一方の面と他方の面とを識別する工程と、
前記平板部の一方の面が前記電極箔の一方の面に接するように前記リード線端子を搬送する工程と、
前記リード線端子が取り付けられたプラス側の電極箔と、前記リード線端子が取り付けられたマイナス側の電極箔とを、それらの間にセパレータを介在させた状態で巻回して前記コンデンサ素子を形成する工程と、
を含む、電解コンデンサの製造方法。
It is a manufacturing method of the electrolytic capacitor according to claim 5,
Preparing a plurality of the lead wire terminals;
Identifying one surface and the other surface of the flat plate portion based on the difference between the shape of the first boundary portion and the shape of the second boundary portion;
Transporting the lead wire terminal so that one surface of the flat plate portion is in contact with one surface of the electrode foil;
The positive electrode foil to which the lead wire terminal is attached and the negative electrode foil to which the lead wire terminal is attached are wound with a separator interposed therebetween to form the capacitor element. And a process of
The manufacturing method of the electrolytic capacitor containing this.
前記リード線端子の一方の面と他方の面とを識別する工程において、前記第1境界部及び前記第2境界部以外の部位の形状に基づいて前記リード線端子の一方の面と他方の面とを識別する、請求項6に記載の電解コンデンサの製造方法。
In the step of identifying one surface and the other surface of the lead wire terminal, one surface and the other surface of the lead wire terminal based on the shape of a portion other than the first boundary portion and the second boundary portion The method for manufacturing an electrolytic capacitor according to claim 6, wherein:
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