JP2005085880A - Electrical component - Google Patents
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- JP2005085880A JP2005085880A JP2003314186A JP2003314186A JP2005085880A JP 2005085880 A JP2005085880 A JP 2005085880A JP 2003314186 A JP2003314186 A JP 2003314186A JP 2003314186 A JP2003314186 A JP 2003314186A JP 2005085880 A JP2005085880 A JP 2005085880A
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Abstract
Description
この発明は、電気部品に関するもので、詳しくは、ケースに電気素子、例えばコンデンサ素子を収納し、ケース内に樹脂を充填し、樹脂表面から外部接続用の端子が引き出されたケース入り電気部品に関するものである。 The present invention relates to an electrical component. More specifically, the present invention relates to a cased electrical component in which an electrical element, for example, a capacitor element is accommodated in a case, resin is filled in the case, and terminals for external connection are drawn from the resin surface. Is.
従来、ケース入り電気部品は、外部接続用の板状金属端子を取り付けたコンデンサ素子等の電気素子を、接続用端子のみがケースの外部に出るようにケース内に収納した後、ケース内に樹脂を充填して製造される（例えば、特許文献１参照）。
ところで、外部との接続用の板状金属端子を用いた従来の電気部品においては、端子に熱衝撃が加わった場合、端子が幅方向へと急激に熱膨張した際に、端子の幅方向端面の樹脂のみが圧縮されて変形するのに対して、端子の端面以外の端子周囲にある樹脂は、端子の膨張に引かれての変形はしないため、端子角部近傍の樹脂に応力が集中し、樹脂にクラックが発生する可能性がある。また、クラックが発生しない場合でも、上記理由のため、端子の膨張時に端子の角部近傍の樹脂が永久変形するのに対し、除熱後に端子は収縮して元の位置に戻るため、樹脂と端子の境界面の剥離が発生するおそれがある。これらの樹脂のクラックや剥離は、金属端子と樹脂との結合が剥がれ易いことに起因している。 By the way, in a conventional electrical component using a plate-like metal terminal for connection to the outside, when a thermal shock is applied to the terminal, when the terminal suddenly expands in the width direction, the end surface in the width direction of the terminal The resin around the terminal other than the end face of the terminal is not deformed due to the expansion of the terminal, so the stress concentrates on the resin near the terminal corner. Cracks may occur in the resin. Even if cracks do not occur, the resin near the corner of the terminal is permanently deformed when the terminal expands, whereas the terminal shrinks and returns to its original position after heat removal. There is a risk of peeling of the terminal interface. These cracks and peeling of the resin are caused by the bond between the metal terminal and the resin being easily peeled off.
この発明は、上記従来の問題点を解決するためになされたもので、その目的は、接続用端子に熱衝撃が加わっても、樹脂のクラック、及び剥離の発生の抑制が可能であり、そのため耐久性、及び信頼性の低下を防止できる電気部品を提供することにある。 The present invention has been made to solve the above-described conventional problems, and its purpose is to suppress the occurrence of resin cracks and peeling even when a thermal shock is applied to the connection terminals. An object of the present invention is to provide an electrical component capable of preventing deterioration in durability and reliability.
そこで、請求項１の電気部品は、ケース３１に、ケース３１外部との接続用端子１１を取り付けた電気素子２１を、接続用端子１１の先端部がケース外部に出るように収納し、ケース３１内に樹脂を充填した電気部品であって、接続用端子１１のケース３１内部から外部にかけての境界部分近傍に、貫通孔１３、及びケース３１の内部から外部方向に延びる突出部１４を設け、貫通孔１３、及び突出部１４のそれぞれ一部分が樹脂３２で覆われるように樹脂３２を充填することを特徴としている。 Therefore, the electrical component of claim 1 stores the electrical element 21 in which the terminal 11 for connection to the outside of the case 31 is attached to the case 31 so that the tip of the connection terminal 11 comes out of the case. An electrical component filled with resin, provided with a through hole 13 and a protruding portion 14 extending from the inside of the case 31 to the outside in the vicinity of the boundary portion from the inside of the case 31 to the outside of the connecting terminal 11, The resin 32 is filled so that each of the hole 13 and the protruding portion 14 is covered with the resin 32.
上記請求項１の電気部品によれば、接続用端子１１に貫通孔１３を設けたことにより、樹脂３２表面において端子１１の幅方向の長さが実質的に短くなり、熱衝撃が加わった場合における、端子１１の幅方向の膨張量を減じることができる。また、貫通孔１３により、端子１１の変形は各貫通孔１３の両側の部分に分割されるため、変形領域も複数箇所に分割され、変形を分散させることが可能となる。また、貫通孔１３内に樹脂３２が充填されるので、樹脂３２と端子１１との構造的強度を増すことが出来る。 According to the electrical component of claim 1, when the through-hole 13 is provided in the connection terminal 11, the length in the width direction of the terminal 11 on the surface of the resin 32 is substantially shortened and a thermal shock is applied. The amount of expansion in the width direction of the terminal 11 can be reduced. In addition, since the deformation of the terminal 11 is divided into portions on both sides of each through-hole 13 by the through-hole 13, the deformation region is also divided into a plurality of places, and the deformation can be dispersed. Further, since the resin 32 is filled in the through hole 13, the structural strength between the resin 32 and the terminal 11 can be increased.
また、金属と樹脂は本来的には結合が剥がれ易いが、ケースの内部から外部方向へ延びる突出部１４を接続用端子１１に設けたことにより、端子１１と樹脂３２の食い付きが良くなり、端子１１の幅方向への膨張に伴って、端子１１の端面近傍以外の樹脂３２も突出部１４に押されて変形し、局部的な変形の集中を抑制するさらなる効果が得られる。 Further, the bond between the metal and the resin is inherently easily peeled off, but by providing the connection terminal 11 with the protruding portion 14 extending from the inside of the case to the outside, the biting between the terminal 11 and the resin 32 is improved. As the terminal 11 expands in the width direction, the resin 32 other than the vicinity of the end face of the terminal 11 is also pushed by the projecting portion 14 to be deformed, thereby obtaining a further effect of suppressing local concentration of deformation.
また、請求項２の電気部品では、ケース３１にウレタン樹脂を充填したことを特徴としている。 The electrical component of claim 2 is characterized in that the case 31 is filled with urethane resin.
上記請求項２の電気部品によれば、充填する樹脂３２として比較的軟らかいウレタン樹脂を用いたことにより、樹脂３２が変形し易くなり、端子角部の樹脂の応力集中を緩和することができる。 According to the electrical component of the second aspect, since the relatively soft urethane resin is used as the resin 32 to be filled, the resin 32 is easily deformed, and the stress concentration of the resin at the terminal corner can be reduced.
さらに、請求項３の電気部品では、電気素子２１がコンデンサ素子であることを特徴としている。 Furthermore, the electrical component of claim 3 is characterized in that the electrical element 21 is a capacitor element.
上記請求項３の電気部品によれば、使用する電気素子２１としてコンデンサ素子を用いているが、コンデンサは、抵抗、コイル、ダイオード等の電気素子の中でも特に急激な放電によって端子１１に熱衝撃を生じ易く、接続用端子１１の角部周辺の樹脂３２にクラック、及び端子１１との剥離を生じ易い。従って、熱衝撃による電気部品の破損を防止する上記請求項１、及び請求項２の作用効果が顕著に表れる。 According to the electrical component of the third aspect, the capacitor element is used as the electric element 21 to be used. However, among the electric elements such as a resistor, a coil, and a diode, the capacitor causes thermal shock to the terminal 11 due to particularly rapid discharge. It tends to occur, and the resin 32 around the corner of the connection terminal 11 is likely to crack and peel off from the terminal 11. Accordingly, the effects of the first and second aspects of the present invention, which prevent the electrical components from being damaged by thermal shock, are remarkably exhibited.
請求項１の電気部品では、接続用端子に貫通孔を設けたことにより、熱衝撃が加わった場合の、端子の幅方向の膨張量を減じることができる。また、貫通孔により、端子の膨張による樹脂の変形領域も複数ヶ所に分割され、変形を分散させることが可能となる。従って、樹脂のクラックの発生、及び剥離を防止することができ、耐久性、及び信頼性の低下が抑制できる。また、貫通孔内に樹脂が充填されるので、樹脂と端子との構造的強度を増すことが出来る。 In the electrical component according to the first aspect, by providing the through hole in the connection terminal, it is possible to reduce the expansion amount in the width direction of the terminal when a thermal shock is applied. Further, the through-hole divides the deformation region of the resin due to the expansion of the terminal into a plurality of locations, and the deformation can be dispersed. Therefore, generation | occurrence | production of the crack of resin and peeling can be prevented, and the fall of durability and reliability can be suppressed. Further, since the resin is filled in the through hole, the structural strength between the resin and the terminal can be increased.
また、請求項１の電気部品では、突出部を接続用端子に設けたことにより、本来結合しにくい端子と樹脂の食い付きが良くなり、端子の幅方向への膨張に伴って、端子の端面近傍以外の樹脂も突出部に押されて変形し、局部的な変形の集中を抑制するさらなる効果が得られる。従って、樹脂のクラックの発生、及び剥離を一段と有効に防止することができる。 In addition, in the electrical component according to claim 1, since the protruding portion is provided on the connection terminal, the biting between the terminal and the resin that are difficult to be combined with each other is improved, and the end face of the terminal is expanded as the terminal expands in the width direction. Resins other than those in the vicinity are also deformed by being pushed by the protrusions, and a further effect of suppressing local concentration of deformation can be obtained. Therefore, the occurrence of cracks and peeling of the resin can be more effectively prevented.
請求項２の電気部品では、ウレタン樹脂が軟らかいために、樹脂が容易に変形し、クラックの発生、及び剥離を防止することができる。 In the electrical component of claim 2, since the urethane resin is soft, the resin can be easily deformed, and generation of cracks and peeling can be prevented.
請求項３の電気部品では、電気素子としてコンデンサ素子を使用するが、特にコンデンサは接続用端子に熱衝撃を生じ易いため、その熱衝撃に対して端子角部の樹脂のクラック発生や剥離を防止する対策を施した請求項１、及び請求項２の効果がより大きく得られる。 In the electric component of claim 3, a capacitor element is used as an electric element. In particular, since a capacitor easily causes a thermal shock to a connection terminal, the occurrence of a crack and peeling of a resin at a corner portion of the terminal against the thermal shock is prevented. The effects of claim 1 and claim 2 in which such measures are taken can be obtained more greatly.
次に、この発明の電気部品の具体的な実施の形態について、図面を参照して詳細に説明する。図１は、金属製の板状端子１１の斜視図を示し、図２は板状端子１１の側面図を示している。図１に示すように、板状端子１１は電気素子の電極と接する一端部１２が狭幅で、外部接続される他端部が広幅な形状である。この板状端子１１の広幅部分に貫通孔１３と突出部１４とを設けている。貫通孔１３は、端子１１の長手方向（引出し方向）に延びる長円状のもので、また突出部１４は、端子１１の長手方向（引出し方向）に延びるもので、貫通孔１３の両側にそれぞれ一条ずつ平行に設けられている。突出部１４は、板状端子１１の一方の面から押圧することにより、他方の面に形成できる。この場合、突出部１４の反対面には凹部１５が形成される。 Next, specific embodiments of the electrical component of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a metal plate terminal 11, and FIG. 2 is a side view of the plate terminal 11. As shown in FIG. 1, the plate-like terminal 11 has a shape in which one end 12 in contact with the electrode of the electric element is narrow and the other end connected externally is wide. A through hole 13 and a protrusion 14 are provided in the wide portion of the plate-like terminal 11. The through hole 13 has an oval shape extending in the longitudinal direction (drawing direction) of the terminal 11, and the protrusion 14 extends in the longitudinal direction (drawing direction) of the terminal 11. One line is provided in parallel. The protrusion 14 can be formed on the other surface by pressing from one surface of the plate-like terminal 11. In this case, a recess 15 is formed on the opposite surface of the protrusion 14.
図３は、電気素子としてのコンデンサ素子２１の両端面電極に板状端子１１の一端部１２を接続した例を示している。図４は図３の構成をケース３１に、貫通孔１３、突出部１４、及び凹部１５の一部がケース３１外部に出るように収納し、樹脂３２を充填したものである。従って樹脂３２は、端子１１に設けた貫通孔１３、突出部１４、及び凹部１５のそれぞれ一部分を覆うように充填されている。樹脂３２にはＡ硬度３４（ＪＩＳ準拠）と比較的軟らかいウレタン樹脂を使用する。 FIG. 3 shows an example in which one end 12 of the plate-like terminal 11 is connected to both end face electrodes of a capacitor element 21 as an electric element. FIG. 4 shows a case 31 in which the structure of FIG. Therefore, the resin 32 is filled so as to cover each part of the through hole 13, the protruding portion 14, and the recessed portion 15 provided in the terminal 11. The resin 32 is made of urethane resin with A hardness of 34 (conforms to JIS) and relatively soft.
電気部品の最終的な製品形状の他の実施形態の要部拡大斜視図を図５に示す。図５における図示例では、端子１１のケース外に出ている部分が、電気部品を使用する際の取扱いを容易にするために、Ｌ字型に折り曲げられている。 The principal part expansion perspective view of other embodiment of the final product shape of an electrical component is shown in FIG. In the illustrated example in FIG. 5, the portion of the terminal 11 that protrudes from the case is bent into an L shape in order to facilitate handling when using an electrical component.
図４、及び図５に示すように、貫通孔１３により、板状端子１１と樹脂３２の接触部分が、貫通孔１３の両側に２分割されると共に、樹脂３２表面における端子１１の幅が実質的に細くなる。従って端子１１の変形領域が分散されると共に、端子１１の幅方向の総膨張長さも減少する効果が得られる。さらに突出部１４と凹部１５を設けたことにより樹脂３２と端子１１の食い付きが良くなる。従って、端子１１が幅方向に膨張する際には、端子１１端面以外の樹脂３２も端子１１の膨張する動きに引かれて変形し、樹脂３２の変形領域を分散する効果が得られる。これらの効果により、樹脂３２にクラック、及び剥離が生じるのを抑制することができ、そのためコンデンサの耐久性、及び信頼性の低下を抑制することができる。 As shown in FIGS. 4 and 5, the contact portion between the plate-like terminal 11 and the resin 32 is divided into two on both sides of the through-hole 13 by the through-hole 13, and the width of the terminal 11 on the surface of the resin 32 is substantially equal. It becomes thin. Therefore, the deformation region of the terminal 11 is dispersed and the total expansion length in the width direction of the terminal 11 is reduced. Further, the protrusions 14 and the recesses 15 are provided, so that the resin 32 and the terminals 11 are better bitten. Therefore, when the terminal 11 expands in the width direction, the resin 32 other than the end face of the terminal 11 is also deformed by the expansion movement of the terminal 11, and the effect of dispersing the deformation region of the resin 32 is obtained. Due to these effects, it is possible to suppress the occurrence of cracks and peeling in the resin 32, and therefore it is possible to suppress the deterioration of the durability and reliability of the capacitor.
また、図４、及び図５のいずれの実施形態でも、貫通孔１３内、及び凹部１５の一部に樹脂３２が充填され、さらに突出部１４（凹部１５）を端子の長手方向に延びるように設けているので、端子の１１の上方向への引張りに対しても、また幅方向への揺動に対しても、樹脂３２と端子１１との構造的強度を増すことができる。さらに、貫通孔１３の近傍に突出部１４、及び凹部１５を設けたので、貫通孔１３の両側の端子１１が細くなる部分の強度低下を防止することができる。特に図５の実施例のように、端子１１をＬ字型に曲げた場合には、端子１１のＬ字型に曲げた部分の先端に外力が加わり易く、端子１１を上方向に引き抜く力や、端子１１の貫通孔１３により細くなった部分に曲げ力やねじり力が作用し易い。従って、貫通孔１３による端子１１を樹脂３２に固定する効果や、突出部１４（凹部１５）による端子１１が貫通孔１３により細くなった部分の剛性強化が一段と有効に機能する。 4 and 5, the resin 32 is filled in the through hole 13 and a part of the recess 15, and the protrusion 14 (recess 15) extends in the longitudinal direction of the terminal. Since it is provided, the structural strength of the resin 32 and the terminal 11 can be increased both when the terminal 11 is pulled upward and when it is swung in the width direction. Furthermore, since the protrusion 14 and the recess 15 are provided in the vicinity of the through hole 13, it is possible to prevent a decrease in strength of the portion where the terminals 11 on both sides of the through hole 13 become narrow. In particular, when the terminal 11 is bent into an L shape as in the embodiment of FIG. 5, an external force is easily applied to the tip of the portion of the terminal 11 bent into an L shape, and the force for pulling the terminal 11 upward A bending force or a torsional force is likely to act on a portion narrowed by the through hole 13 of the terminal 11. Therefore, the effect of fixing the terminal 11 by the through hole 13 to the resin 32 and the rigidity enhancement of the portion where the terminal 11 is narrowed by the through hole 13 by the protruding portion 14 (recessed portion 15) function more effectively.
さらに、上記の実施例では電気素子としてコンデンサ素子２１を用いたが、コンデンサは急激な放電により端子に熱衝撃が発生し易く、本発明の効果が一段と有効に機能する。また、樹脂３２に比較的軟らかいウレタン樹脂を使用したため、樹脂３２は変形し易く、クラック、及び端子１１との剥離が生じにくい。 Furthermore, although the capacitor element 21 is used as the electric element in the above embodiment, the capacitor is likely to generate a thermal shock at the terminal due to a rapid discharge, and the effect of the present invention functions more effectively. Further, since a relatively soft urethane resin is used for the resin 32, the resin 32 is easily deformed, and cracks and peeling from the terminals 11 are unlikely to occur.
以上にこの発明の電気部品の具体的な実施の形態について説明したが、この発明は上記実施の形態に限定されるものではなく、この発明の範囲内で種々変更して実施することが可能である。例えば、貫通孔１３の形状は任意であり、また複数箇所に形成しても、樹脂にそれぞれの一部が覆われる限り、端子１１の幅方向の膨張量を減らし、樹脂３２の変形を分散させるため、樹脂３２のクラック、及び剥離の発生を防止する効果を発揮する。また、突出部１４（凹部１５）も２箇所以上存在してもよく、形状も矩形、楕円形等に種々変更することができる。 Although specific embodiments of the electrical component of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. is there. For example, the shape of the through-hole 13 is arbitrary, and even if it is formed at a plurality of locations, as long as the resin is partially covered, the expansion amount in the width direction of the terminal 11 is reduced and the deformation of the resin 32 is dispersed. Therefore, the effect of preventing the occurrence of cracks and peeling of the resin 32 is exhibited. Moreover, the protrusion part 14 (recessed part 15) may exist in two or more places, and a shape can be variously changed into a rectangle, an ellipse, etc.
また、上記実施形態では樹脂３２としてＡ硬度３４（ＪＩＳ準拠）のウレタン樹脂を用いているが、同様な硬度のシリコン樹脂等を用いてもよい。さらに、上記実施形態では電気素子２１として、発明の効果を発揮し易いようにコンデンサを用いているが、もちろん、使用する電気素子２１としては、抵抗、コイル、ダイオード等でもよく、あるいは他の複合部品でもよい。 Moreover, in the said embodiment, although the urethane resin of A hardness 34 (JIS conformity) is used as the resin 32, you may use the silicon resin etc. of the same hardness. Furthermore, in the above embodiment, a capacitor is used as the electric element 21 so that the effect of the invention can be easily exerted. Of course, the electric element 21 to be used may be a resistor, a coil, a diode or the like, or other composites. It may be a part.
１１・・板状端子、１３・・貫通孔、１４・・突出部、２１・・電気素子、３１・・ケース、３２・・樹脂 11 .... Plate terminal, 13 .... Through hole, 14 .... Projection, 21 ... Electric element, 31.Case, 32 ... Resin
Claims (3)
The electrical component according to claim 1 or 2, wherein the electrical element (21) is a capacitor element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003314186A JP2005085880A (en) | 2003-09-05 | 2003-09-05 | Electrical component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003314186A JP2005085880A (en) | 2003-09-05 | 2003-09-05 | Electrical component |
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| JP2005085880A true JP2005085880A (en) | 2005-03-31 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007234708A (en) * | 2006-02-28 | 2007-09-13 | Shizuki Electric Co Inc | Capacitor |
| JP2008151023A (en) * | 2006-12-18 | 2008-07-03 | Kokusan Denki Co Ltd | Resin-cast-molding-type electrical component |
| JP2010080639A (en) * | 2008-09-25 | 2010-04-08 | Tdk Corp | Electronic component unit, and method of manufacturing electronic component unit |
| CN102044346A (en) * | 2009-10-13 | 2011-05-04 | 三星电机株式会社 | Chip type electric double layer capacitor and method for manufacturing the same |
| JP2013089654A (en) * | 2011-10-14 | 2013-05-13 | Panasonic Corp | Case molded capacitor |
| JP2013211324A (en) * | 2012-03-30 | 2013-10-10 | Panasonic Corp | Case molded capacitor |
| JP2014116446A (en) * | 2012-12-10 | 2014-06-26 | Panasonic Corp | Case mold type capacitor |
| JP2016111884A (en) * | 2014-12-10 | 2016-06-20 | 日立オートモティブシステムズ株式会社 | Motor and mechatronic motor including the same |
| WO2018101260A1 (en) * | 2016-11-29 | 2018-06-07 | 京セラ株式会社 | Film capacitor, inverter and electric vehicle |
| WO2021085107A1 (en) * | 2019-10-29 | 2021-05-06 | パナソニックＩｐマネジメント株式会社 | Capacitor |
| WO2022185803A1 (en) * | 2021-03-02 | 2022-09-09 | 株式会社村田製作所 | Capacitor module |
| JP7570036B2 (en) | 2019-10-29 | 2024-10-21 | パナソニックＩｐマネジメント株式会社 | Capacitor |
-
2003
- 2003-09-05 JP JP2003314186A patent/JP2005085880A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007234708A (en) * | 2006-02-28 | 2007-09-13 | Shizuki Electric Co Inc | Capacitor |
| JP2008151023A (en) * | 2006-12-18 | 2008-07-03 | Kokusan Denki Co Ltd | Resin-cast-molding-type electrical component |
| JP2010080639A (en) * | 2008-09-25 | 2010-04-08 | Tdk Corp | Electronic component unit, and method of manufacturing electronic component unit |
| CN102044346A (en) * | 2009-10-13 | 2011-05-04 | 三星电机株式会社 | Chip type electric double layer capacitor and method for manufacturing the same |
| JP2013089654A (en) * | 2011-10-14 | 2013-05-13 | Panasonic Corp | Case molded capacitor |
| JP2013211324A (en) * | 2012-03-30 | 2013-10-10 | Panasonic Corp | Case molded capacitor |
| JP2014116446A (en) * | 2012-12-10 | 2014-06-26 | Panasonic Corp | Case mold type capacitor |
| JP2016111884A (en) * | 2014-12-10 | 2016-06-20 | 日立オートモティブシステムズ株式会社 | Motor and mechatronic motor including the same |
| WO2018101260A1 (en) * | 2016-11-29 | 2018-06-07 | 京セラ株式会社 | Film capacitor, inverter and electric vehicle |
| WO2021085107A1 (en) * | 2019-10-29 | 2021-05-06 | パナソニックＩｐマネジメント株式会社 | Capacitor |
| JP7570036B2 (en) | 2019-10-29 | 2024-10-21 | パナソニックＩｐマネジメント株式会社 | Capacitor |
| WO2022185803A1 (en) * | 2021-03-02 | 2022-09-09 | 株式会社村田製作所 | Capacitor module |
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