JPS605578Y2 - Electrolytic capacitor - Google Patents

Description

【考案の詳細な説明】 本考案はオーディオ機器などに使用される電解コンデン
サの改良に関するものである。[Detailed Description of the Invention] The present invention relates to improvements in electrolytic capacitors used in audio equipment and the like.

近年、オーディオシステムに用いられているコンデンサ
などの電子部品は、主に電気特性を重視して設計されて
いたがミオーディオ技術の発展に伴ない、電気特性はも
ちろんのこと、オーディオシステムにおける音質の評価
をも重視されてきていることは周知のとおりである。In recent years, electronic components such as capacitors used in audio systems have been designed primarily with emphasis on electrical characteristics, but with the development of audio technology, not only electrical characteristics but also sound quality in audio systems have been designed. It is well known that evaluation is also becoming more important.

特に電解コンデンサにおいては、部品、構造などの違い
により、オーディオ機器の音質が大きく影響するため、
改良の余地の多い電子部品である。Especially when it comes to electrolytic capacitors, the sound quality of audio equipment is greatly affected by differences in components, structure, etc.
It is an electronic component with a lot of room for improvement.

従来の電解コンデンサは第１図に示すように陽極箔およ
び陰極箔に外部引出リード端子１を加締などによる方法
で各々接続せしめた後、電解紙を介して巻回し巻終り終
端部をテープ止めしてコンデンサ素子２を形成する。As shown in Fig. 1, conventional electrolytic capacitors are manufactured by connecting the external lead terminals 1 to the anode foil and the cathode foil by caulking or other methods, and then winding them through electrolytic paper and taping the end of the winding. Thus, a capacitor element 2 is formed.

次に該素子２に電解液を含浸せしめてゴムなどの封口体
３を装着し、アルミニウムなどよりなるケース４に挿入
して該ケース４の開口部を巻締め密封したものであった
。Next, the element 2 was impregnated with an electrolytic solution, a sealing member 3 made of rubber or the like was attached, and the element 2 was inserted into a case 4 made of aluminum or the like, and the opening of the case 4 was sealed.

このような電解コンディサに高周波電流を流したとき、
一般にアルミニウムなどの金属ケースの場合、磁性体金
属はどではないが、コンデンサ素子のアルミ電極を巻回
したことによる磁束によって極めて少ないループ電流が
円筒形金属コンデンサケースの底部に生ずることがわか
った。When a high frequency current is passed through such an electrolytic capacitor,
In general, in the case of a metal case such as aluminum, although it is not a magnetic metal, it has been found that an extremely small loop current is generated at the bottom of the cylindrical metal capacitor case due to the magnetic flux caused by winding the aluminum electrode of the capacitor element.

しかし音響技術における音質については、ループ電流が
音質歪の大きな原因となっていることが周知で、このル
ープ電流をなくすために円筒形金属コンデンサケースの
底部をなくし、円筒金属パイプを用いて底部をラバーベ
ーク、樹脂などで形成した構造や、金属ケースに変えて
樹脂ケースが用いられているが工数の増加、現有設備を
流用できないなどの多くの障害にはばまれているのが現
状である。However, when it comes to sound quality in audio technology, it is well known that loop current is a major cause of distortion in sound quality.In order to eliminate this loop current, the bottom of the cylindrical metal capacitor case was eliminated and a cylindrical metal pipe was used to cover the bottom. Structures formed from rubber baking, resin, etc., and resin cases instead of metal cases are being used, but at present they are faced with many obstacles, such as increased man-hours and the inability to reuse existing equipment.

本考案は上述の欠点を除去するために考案されたもので
、現有設備、作業方法を大幅に変更することなく、ルー
プ電流を容易に減少または除去した電解コンデンサを提
供するものである。The present invention has been devised to eliminate the above-mentioned drawbacks, and provides an electrolytic capacitor whose loop current can be easily reduced or eliminated without significantly changing existing equipment or working methods.

すなわち、本考案は黒鉛を麿砕すると炭素−炭素結合の
切断が起こり、磁化率に大きな変化を与えると共に常磁
性を誘起することが知られ、特に麿砕された各種炭素類
はこれらに４００〜７００℃の熱処理をほどこすことに
よって受磁率に大きな差の生じる性質を利用し炭素類の
もつ特徴と、該炭素類が非金属中もつとも導電性の高い
点に着目し、従来の樹脂ケースに収納した電解コンデン
サのコンデンサ素子にペーストを含浸せしめた後該素子
の電極に定格電圧を印加して、該素子の上面リード引出
側と下面側との電位差を測定してみると、外周部で下面
側の電位が高く、かつ数ｍＶ〜数１０ｍＶの電位差を生
じることもわかっており、この現象をも除去するもので
ある。In other words, it is known that when graphite is crushed, carbon-carbon bonds are broken, causing a large change in magnetic susceptibility and inducing paramagnetism. Taking advantage of the property that heat treatment at 700℃ causes a large difference in magnetic receptivity, we focused on the characteristics of carbon and the fact that carbon has high conductivity even among non-metals, and stored it in a conventional resin case. After impregnating the capacitor element of the electrolytic capacitor with the paste, applying the rated voltage to the electrodes of the element and measuring the potential difference between the top lead extraction side and the bottom side of the element, it was found that the bottom side at the outer periphery It is also known that the potential is high and a potential difference of several mV to several tens of mV occurs, and this phenomenon is also eliminated.

以下本考案を第２図、第３図および第４図に示す実施例
について説明すれば、１１は引出リード端子、１２はコ
ンデンサ素子、１５は電極箔、１６は電解紙などのセパ
レータ、１７は多結晶黒鉛を付着あるいは含有してなる
粘着テープで、第２図は２枚の電極箔１５に各々引出リ
ード端子１１を設け、該箔１５間に電解紙などのセパレ
ータ１６を介し巻回してなるコンデンサ素子１２の巻終
り部に多結晶黒鉛を一様に含有あるいは付着してなる粘
着テープ１７を第３図のように素子１２の周囲に巻き付
けたコンデンサ素子の斜視図を示し、第４図は上記コン
デンサ素子１２をアルミニウムケース１４に収納腰ケー
ス１４の開口部に封口体１３を嵌合し巻締などにより密
閉した断面図を示し、さらにケース１４の側面あるいは
底面また封口体１３に薄肉部を形成して防爆機能を備え
てもよい。The present invention will be described below with reference to the embodiments shown in FIGS. 2, 3, and 4. Reference numeral 11 is a lead terminal, 12 is a capacitor element, 15 is an electrode foil, 16 is a separator such as electrolytic paper, and 17 is a separator such as electrolytic paper. This adhesive tape is made by adhering to or containing polycrystalline graphite, and as shown in FIG. 2, it is made by winding two electrode foils 15 each with a lead terminal 11 therebetween, with a separator 16 such as electrolytic paper interposed between the foils 15. A perspective view of a capacitor element is shown in which an adhesive tape 17 uniformly containing or adhered to polycrystalline graphite is wound around the element 12 as shown in FIG. 3 at the end of the winding of the capacitor element 12. A cross-sectional view is shown in which the capacitor element 12 is housed in an aluminum case 14 and the sealing body 13 is fitted into the opening of the waist case 14 and hermetically sealed by seaming or the like. It may be formed to provide an explosion-proof function.

すなわち、本考案は電極箔１５間にセパレータ１６を介
して巻回してなるコンデンサ素子の巻終り部に多結晶黒
鉛を一様に付着あるいは含有してなる粘着テープ１７で
巻き止めをしてケースに収納し、密封するよう構成した
電解コンデンサである。That is, in the present invention, a capacitor element formed by winding between electrode foils 15 with a separator 16 interposed therebetween is secured at the end of the winding with an adhesive tape 17 made of polycrystalline graphite uniformly adhered to or containing polycrystalline graphite, and then attached to a case. It is an electrolytic capacitor configured to be housed and sealed.

なお、上記実施例において、粘着テープ１７に一様に含
有あるいは付着させる多結晶黒鉛について説明したが、
アセチレンブラック、カーボンブラック、活性炭などの
磨砕炭素類であってもその効果は同様である。In addition, in the above embodiment, polycrystalline graphite was explained to be uniformly contained or attached to the adhesive tape 17, but
The same effect can be obtained using ground carbon such as acetylene black, carbon black, and activated carbon.

また粘着テープ１７の多結晶黒鉛の付着あるいは含有は
全面であっても部分的帯状にしてもよい。Further, the polycrystalline graphite may be attached or contained in the adhesive tape 17 on the entire surface or in a partial band shape.

さらにテープの巻き止めは部分的な巻き終り部のみでな
く、少なくとも素子１２の周囲を１周するようにすると
よ（、またテープ幅も広い程よい。Furthermore, the tape should not be wound only partially at the end of the winding, but at least once around the element 12 (and the wider the tape, the better.

本考案は以上のように構成することにより、コンデンサ
素子より発生したコンデンサケースの底面に対して垂直
の磁束はテープに付着あるいは含有した磨砕炭素類の常
磁性によって妨げられ、垂直に透過せずにその進路は曲
げられ金属ケースの底部に生ずるループ電流は減少もし
くは消滅する。By configuring the present invention as described above, the magnetic flux generated by the capacitor element perpendicular to the bottom surface of the capacitor case is blocked by the paramagnetism of the ground carbon attached to or contained in the tape, and does not permeate perpendicularly. Its path is then bent and the loop current generated at the bottom of the metal case is reduced or eliminated.

これは静電シールドの役目を該炭素類がしているものと
思われ、また樹脂ケースを用いた場合においても導電性
を有する炭素類のために、素子表面の電位差は減少もし
くは消滅する。This is thought to be due to the carbons acting as an electrostatic shield, and even when a resin case is used, the electrical potential difference on the element surface decreases or disappears due to the conductivity of the carbons.

さらに上記のように形成された本考案の電解コンデンサ
（定格５０ＷＶ、 １０００μＦ）と従来の電解コンデ
ンサ（定格５ＱＷＶ、１０００μＦ）の歪率特性図を第
５図に示し、イは本考案品、口は従来品である。Furthermore, the distortion rate characteristics of the electrolytic capacitor of the present invention (rated at 50 WV, 1000 μF) formed as described above and the conventional electrolytic capacitor (rated at 5 QWV, 1000 μF) are shown in Fig. 5, where A is the product of the present invention, and This is a conventional product.

図から明らかなように本考案の多結晶黒鉛を付着させた
粘着テープでコンデンサ素子の巻き止めをした電解コン
デンサは、３０ＫＨｚにおける歪率が大幅に改善され、
著しい効果のあることが判る。As is clear from the figure, the electrolytic capacitor in which the capacitor element is wrapped with the adhesive tape to which the polycrystalline graphite of the present invention is attached has a significantly improved distortion rate at 30 KHz.
It turns out that it has a significant effect.

またこのような本考案の電解コンデンサをオーディオシ
ステムの電源などの回路に装着して試聴した結果、従来
の電解コンデンサに比較して立体感が向上し、音質的に
優れていることが立証された。In addition, when the electrolytic capacitor of this invention was installed in the power supply circuit of an audio system and listened to, it was proven that the three-dimensional effect was improved and the sound quality was superior compared to conventional electrolytic capacitors. .

本考案の電解コンデンサは、以上に述べたように構成し
ているので引出端子間のショートも起らず、また音質は
高域での歪感がなくなると共に低音がしまって出るよう
になり、かつ高周波域における歪率特性が大幅に改善さ
れ、第三次高調波が著しく低減され、オーディオシステ
ム、各種音声伝送システムなどに用いると高忠実度の顕
著な効果を奏するものである。Since the electrolytic capacitor of the present invention is configured as described above, short circuits do not occur between the output terminals, and the sound quality is such that there is no distortion in the high range, and the low frequency sound is suppressed. The distortion rate characteristics in the high frequency range are greatly improved, and the third harmonic is significantly reduced, and when used in audio systems, various audio transmission systems, etc., it produces a remarkable effect of high fidelity.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の電解コンデンサの断面図、第２図は本考
案のコンデンサ素子の一部展開斜視図、第３図は本考案
のコンデンサ素子の断面図、第４図は本考案の電解コン
デンサの実施例の断面図、第５図は電解コンデンサの歪
率特性図で、イは本考案品、口は従来品である。 １１・・・・・・引出リード端子、１２・・・・・・コ
ンデンサ素子、１３・・・・・・封口板、１４・・・・
・・アルミニウムケース、１５・・・・・・電極箔、１
６・・・・・・電解紙などのセパレータ、１７・・・・
・・粘着テープ。Figure 1 is a sectional view of a conventional electrolytic capacitor, Figure 2 is a partially exploded perspective view of a capacitor element of the present invention, Figure 3 is a sectional view of a capacitor element of the present invention, and Figure 4 is an electrolytic capacitor of the present invention. FIG. 5 is a sectional view of an embodiment of the present invention, and FIG. 5 is a distortion factor characteristic diagram of an electrolytic capacitor. A is a product of the present invention and A is a conventional product. 11... Output lead terminal, 12... Capacitor element, 13... Sealing plate, 14...
... Aluminum case, 15 ... Electrode foil, 1
6... Separator such as electrolytic paper, 17...
··Adhesive tape.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電極箔間に電解紙を介し巻回してなるコンデンサ素子の
巻終部をテープ止め固定しケースに収納し密閉するよう
構成した電解コンデンサにおいて、該テープに多結晶黒
鉛、アセチレンブラック、カーボンブラック、活性炭な
どの磨砕炭素類を付着あるいは含有させてコンデンサ素
子の周囲を少なくとも１周するよう構成した電解コンデ
ンサ。In an electrolytic capacitor configured such that the end of the winding of a capacitor element is wound with electrolytic paper between electrode foils, the end of the winding is fixed with tape, and the tape is housed in a case and sealed, and the tape contains polycrystalline graphite, acetylene black, carbon black, activated carbon An electrolytic capacitor constructed by adhering or containing ground carbon such as, for example, so as to surround the capacitor element at least once.