M360434 (1) 八、新型說明 【新型所屬之技術領域】 本創作係例如用於封住電解電容器的容器之板狀構件 ，其係關於具備將元件端子以電氣方式導出的外部端子之 封口體，特別是有關適於大型電解電容器之電解電容器用 封口體及電解電容器。 【先前技術】 電解電容器係將含浸有電解液的電容器元件收容在有 底圓筒狀鋁殼，藉由以設有電極的封口板封住的方式所構 成。大容量的電解電容器所利用的封口板被要求有電氣絶 緣性、氣密性、耐藥品性，但一般有使用貼附著橡膠的酚 醛樹脂層積板者（參照專利文獻1)。 例如，如第7圖（a)或（b)所示，使用貼附著橡膠的酣 醛樹脂層積板的電解電容器用封口體（以下，僅稱爲「封 口體」。）1，係將在酚醛樹脂之層積板2貼附著橡膠片3 者，予以加温以防止破裂且用沖壓機沖裁成圓形，亦即藉 由熱沖壓而製造。在封口體1形成一對之貫通孔，於該貫 通孔安裝著各外部端子4。 這種封口體1係如第8圖所示’被安裝在收容有電容 器元件5的鋁殼6上部開口，藉由在鋁殻6形成頸收部而 折入的方式’橡膠片3外周面和鋁殼6内側面接觸’且由 於鋁殼6的折入緣接觸在橡膠片3的表面’因此形成利用 橡膠彈性之封住。 -4- M360434 (2) [專利文獻1]日本特開2006- 1 00627號公報 【新型內容】 而且，使用這種貼附著橡膠的酚醛樹脂層積板的封口 板針對大徑物有如以下之問題。即，貼附著橡膠的酚醛樹 脂層積板在沖裁時，容易產生破裂、裂痕或外周的破綻等 。特別是在預先形成貫通孔的情形下，該部位產生破裂的 > 可能性高。沖裁時加溫會有某種程度防止破裂的效果，但 隨著沖裁之直徑變大而無法防止破裂。 又，貼附著橡膠的酚醛樹脂層積板的情形可以從第7 圖（b)得知，沖裁部分以外的剩餘部分沒有用，必須廢棄 而產生材料之浪費。 本創作係爲了解決如上述以往技術之問題而提案者， 其目的在於提供不會使樹脂層積板產生破裂或裂痕等、亦 無材料之浪費且可量產之電解電容器用封口體及電解電容 I 器。 爲了達成上述目的，申請專利範第1項之創作係電解 電容器所使用的圓盤狀封口體，其特徴爲將彈性橡膠和聚 丙烯所構成的封口板層積而一體成型。 以上態樣中，藉由層積彈性橡膠和聚丙烯所構成的封 口板而構成一體成型的封口體之方式，由於將封口體一個 一個成型而容易製作。這種本創作中，不會如以往之貼附 著橡膠的酚醛樹脂層積板產生從層積板沖裁後以外的部分 形成浪費之情形。 -5- M360434 (3) 申請專利範圍第2項之創作，係如申請專利範圍第1 項之創作，其特徵爲前述封口板係由在聚丙烯中含有玻璃 纖維者所構成。 以上態樣中，藉由在當作封口板素材所使用的聚丙烯 中，進而混入玻璃纖維之方式，可提高封口板的強度。又 ，藉此可使封口板本身的厚度較薄。 申請專利範圍第3項之創作，係如申請專利範圍第1 > 項或第2項之創作，其中，前述彈性橡膠係由彈性體所構 成。 以上態樣中，藉由使用彈性體當作彈性橡膠的方式， 加工容易且在構成封口體構件時，可賦予封口體的強度。 此外，彈性體係使用熱可塑性彈性體或熱硬化性樹脂改質 型。 申請專利範圍第4項之創作，係如申請專利範圍第1 至3項中任一項之創作，其中，前述彈性橡膠係以被覆前 > 述封口板之構成圚的表面部分，且亦被覆封口板的圓周面 之方式構成。 以上態樣中，不僅封口板之構成圓的表面，封口板之 構成圓盤狀的圓周面之側面部分也配置橡膠，藉由以橡膠 被覆封口板的底面側及側面側之方式構成，封口體的側面 全體接觸在電解電容器的鋁殻。即，彈性橡膠對鋁殻的抵 接面積可佔封口板很大的側面部分，因此，像這樣’即使 彈性橡膠構成較薄的厚度，仍可獲得充分的橡膠封住效果 -6- M360434 (4) 申請專利範圍第5項之創作’係如申請專利範圍第1 至3項中任一項之創作，其中，前述封口板係其周圍及用 於插通電極的孔之周圍具備凹部，在前述凹部層積有彈性 橡膠。 以上態様中’彈性橡膠係僅裝設在封口板周圍和電極 的插入孔周圍而構成。其中’彈性橡膠的寬度係當作用於 堵塞端子和其插入孔之隙間、封口體周圍和電容器外裝殼 φ 體之隙間的密封材而發揮功能，因此一定寬度即可。因而 ，本態樣中，即使封口體的大小亦即封口體的直徑改變， 也不須使橡膠寬度改變，可藉由最低限的橡膠發揮封住功 肯b 。 又’並非涵蓋封口體全面設置橡膠，而是僅在必須藉 由橡膠封住的部分，藉由使封口板厚度較薄且在該當厚度 薄的部位配置橡膠之方式，結果可提高封口體全體的強度 〇 • 申請專利範圍第6項之創作，係如申請專利範圍第5 項之創作，其中，前述封口板之構成圓的面之中，在未層 積前述彈性橡膠的前述凹部所形成之部位以外的露出面， 藉由薄的橡膠片被覆。 封口板之構成圓的面之中未層積彈性橡膠，在形成有 凹部的部位以外之露出面以藉由薄橡膠片被覆的方式’針 對封口體厚度變薄的部分，可藉由該橡膠片確保強度。 申請專利範圍第7項之創作，係關於一種電解電容器 ’其係具備：如申請專利範圍第1至6項中任一項之電解 M360434 (5) 電容器用封口體；及收容電容器元件且藉由前述電解電容 器用封口體封住的容器。 以上態樣可獲得與藉由申請專利範圍1至6項之電解 電容器用封口體所得之效果同樣效果的電解電容器。 根據本創作，可提供不會使樹脂層積板產生破裂或裂 痕等，亦不會浪費材料且可量產之電解電容器用封口體及 電解電容器。 【實施方式】 接著，參照第1圖至第6圖說明實施本創作之最佳形 態。 (1)第1實施形態 本創作之第1實施形態所相關之電解電容器用封口體 1 0(以下僅稱爲「封口體1 0」）如第1圖所示’係於含有玻 φ 璃纖維的聚丙烯所構成的封口板1 1，層積由彈性橡膠所 構成的橡膠體1 2而構成者。本實施形態中的橡膠例如使 用熱可塑性彈性體或熱硬化性樹脂改質型之彈性體爲佳。 '層積在封口板11的橡膠體12，係於封口體最外 '周部分具備突出的框1 2c。藉此，在封口體1 0表面側將 橡膠體3 2 a形成盆狀。此外，該框1 2 c係用於提高橡膠體 1 2之封住功能者’並非必要之構成要素。 此處，如上述’電解電容器係藉由將含浸有電解液的 電容器元件收容在有底圓筒狀的鋁殼，且將其以設有電極 -8- M360434 (6) 1 3的封口體1 0封住的方式所構成。因此，封口體1 〇的 形狀爲薄板圓盤狀，其大小係對應所用的電解電容器之殼 體徑而有各種構成。又，第1圖中，讓設在封口體10中 央部分的電極13插通之孔14係配合電極13之數量而設 有2個，但該孔14之數量係根據使用該封口體的電解電 容器之規格而做適當變更者，例如以3個或4個電極構成 的電解電容器時，配合其數量構成。 接著，說明該封口體1 〇的製作程序。本實施形態中 ，首先在圓盤狀且具備凹部的模具注入混入有玻璃纖維的 聚丙烯，使其固化以製作封口板1 1本體。接著，將固化 後的封口板1 1放置在別的模具，且在該處注入橡膠，以 橡膠覆蓋封口板11表面全體的方式，使橡膠體12和封口 板11 一體化。此時’在橡膠體12最外周部分也形成框 1 2 c 〇 電極13不是之後形成孔14，而是在上述模具注入封 口板11及橡膠體12成型時，藉由預先插入電極而成型的 嵌入成型而事先形成。 此外，上述製作程序中，先將封口板成型，然後將橡 膠體成型且一體化，但本發明中不限於此，也可以藉由先 將橡膠體成型而後將封口體成型且一體化之程序進行製作 〇 根據如以上方式所形成的本實施形態之封口體1 0， 係藉由聚丙烯構成封口板，利用模具將該封口板成型，進 而將橡膠體與該封口板一體成型，藉此將封口體一個一個 -9- M360434 (7) 成型而較容易製作。 又，以藉由模具將封口體一個一個成型的方式，就不 會有如以往之貼附著橡膠的酚醛樹脂層積板般從層積板沖 裁後的以外部分形成浪費的情形。 在模具注入封口板11及橡膠體12成型時，藉由預先 插入電極而成型的嵌入成型之方式，在封口體10形成電 極用之孔時，不會如以往沖裁時般在設有孔的周邊部位產 > 生破裂或裂痕。 本實施形態中，係在當作封口板1 1的素材所使用的 聚丙烯中進而混入玻璃纖維而構成。藉此，可提高封口板 11之強度，藉此可將封口體本身的厚度構成較薄。 (2)第2實施形態 本創作之第2實施形態中的封口體2 0係對第1實施 形態中的封口體1 〇加以改良者，具體上如第2圖所示， i 不僅是封口板21之構成圓的表面全體，連封口板21之形 成圓盤狀的圓周面之側面部分也配置橡膠（側面橡膠22a) ，以藉由橡膠體2 2被覆封口板2 1的底面側及側面側的方 式構成者。 此外’這種封口體20之製作程序，係於橡膠注入時 也在封口板2 1的圓周面流入橡膠而形成側面橡膠22a， 除了構成模具以外’與第1實施形態同樣。又，關於其他 構成亦與第1實施形態同様，因而省略說明。 根據如以上之本實施形態之封口體20，不僅封口板 -10- M360434 (8) 2 1表面全體，連封口板21之形成圓盤狀的圓周面之側面 部分也形成側面橡膠22a，藉由以橡膠體22被覆封口板 2 1的底面側及側面側之方式構成’除了第1實施形態中 的封口體10之效果以外，封口體20的側面全體也接觸在 電解電容器之鋁殼。即，相較於第1實施形態’橡膠體對 鋁殼的抵接面積例如可取得封口板2 1較大的側面部分’ 因此，像這樣，即使橡膠體22的厚度構成較薄，仍可獲 φ 得與第1實施形態的情形同樣的橡膠封住效果。 (3)第3實施形態 本創作之第3實施形態係對第1或第2實施形態所示 之封口體中的橡膠體之構成施形改良者。如第3圖所示， 在本實施形態之封口體3 0，封口板3 1係沿其周圍具備甜 甜圏狀的凹部31a，在設有電極33之孔34周圍也具備凹 部31b。在該凹部31a及31b形成橡膠體32。 φ 如第3圖（b)剖視圖所示，在本實施形態之封口體3 0 ，甜甜圈狀的凹部3 1 a在封口板3 1兩端部分，係以各自 的帶寬爲朝封口板31半徑方向對半徑爲5分之1程度之 寬度、和朝封口板31厚度方向爲3分之1程度之厚度的 方式設置。又，凹部31b在設有電極33之孔34周圍，係 以各自的帶寬爲朝封口板31半徑方向對半徑爲7分之1 程度之寬度、和流入孔3 1 a同樣朝封口板3 1厚度方向爲 3分之1程度之厚度的方式設置。 橡膠體32係如上述形成在凹部31a及凹部31b者， -11 - M360434M360434 (1) VIII. New description [Technical field to which the novel technology belongs] This creation is, for example, a plate-shaped member for sealing a container of an electrolytic capacitor, and is a sealing body having an external terminal for electrically discharging the component terminal. In particular, it relates to a sealing body and an electrolytic capacitor for electrolytic capacitors suitable for large electrolytic capacitors. [Prior Art] In the electrolytic capacitor, a capacitor element impregnated with an electrolytic solution is housed in a bottomed cylindrical aluminum case, and is sealed by a sealing plate provided with an electrode. A sealing plate used for a large-capacity electrolytic capacitor is required to have electrical insulation, airtightness, and chemical resistance. However, a phenolic resin laminated board in which a rubber is attached is generally used (see Patent Document 1). For example, as shown in Fig. 7 (a) or (b), a sealing body for an electrolytic capacitor (hereinafter, simply referred to as "sealing body") using a furfural resin laminated plate to which a rubber is attached is used. The laminated sheet 2 of the phenol resin is attached to the rubber sheet 3, heated to prevent cracking, and punched into a circular shape by a press machine, that is, by hot stamping. A pair of through holes are formed in the sealing body 1, and the external terminals 4 are attached to the through holes. The sealing body 1 is attached to the upper portion of the aluminum casing 6 in which the capacitor element 5 is housed as shown in Fig. 8, and is folded in by forming the neck portion in the aluminum casing 6, and the outer peripheral surface of the rubber sheet 3 is The inner side of the aluminum casing 6 is in contact with 'and because the folded edge of the aluminum casing 6 contacts the surface of the rubber sheet 3' thus forms a seal with rubber elasticity. -4- M360434 (2) [Patent Document 1] Japanese Laid-Open Patent Publication No. 2006-100627 [News] Further, the sealing plate of the phenol resin laminated plate using such a rubber-attached rubber has the following problems with respect to a large-diameter object. . That is, the phenolic resin laminated board to which the rubber is attached is likely to be cracked, cracked, or damaged at the periphery during punching. In particular, in the case where a through hole is formed in advance, it is highly probable that the portion is broken. Warming during punching will have some effect of preventing cracking, but as the diameter of the punching becomes larger, it is impossible to prevent cracking. Further, in the case of attaching a rubber-attached phenol resin laminated plate, it can be seen from Fig. 7(b) that the remaining portion other than the punched portion is not used, and it is necessary to discard and waste the material. In order to solve the problems of the prior art as described above, the present invention has been made to provide a sealing body and an electrolytic capacitor for electrolytic capacitors which are produced without massaging the resin laminate without causing cracks or cracks. I. In order to achieve the above object, the invention of claim 1 is a disk-shaped sealing body used for an electrolytic capacitor, which is characterized in that a sealing plate made of an elastic rubber and polypropylene is laminated and integrally molded. In the above aspect, the integrally formed sealing member is formed by laminating a sealing plate composed of an elastic rubber and polypropylene, and the sealing member is easily formed by molding one by one. In this creation, the phenolic resin laminated board to which the rubber is attached is not wasteful from the portion other than the blanking of the laminated board. -5- M360434 (3) The creation of the second item of the patent application is the creation of the first item of the patent application, characterized in that the sealing plate is composed of a glass fiber contained in polypropylene. In the above aspect, the strength of the sealing plate can be improved by incorporating the glass fiber into the polypropylene used as the material of the sealing plate. Moreover, the thickness of the sealing plate itself can be made thinner. The creation of the third item of the patent application is the creation of the first or second aspect of the patent application, wherein the elastic rubber is composed of an elastomer. In the above aspect, the elastic body is used as the elastic rubber, and the processing is easy, and when the sealing member is formed, the strength of the sealing body can be imparted. Further, the elastic system is modified using a thermoplastic elastomer or a thermosetting resin. The creation of the fourth aspect of the patent application is the creation of any one of the first to third aspects of the patent application, wherein the elastic rubber is coated on the surface portion of the sealing plate before and after the coating. The circumferential surface of the sealing plate is constructed. In the above aspect, not only the surface of the sealing plate but also the side surface of the disk-shaped circumferential surface of the sealing plate is also provided with rubber, and the bottom surface side and the side surface side of the sealing plate are covered with rubber, and the sealing body is formed. The sides are all in contact with the aluminum casing of the electrolytic capacitor. That is, the abutting area of the elastic rubber to the aluminum shell can occupy a large side portion of the sealing plate, and therefore, even if the elastic rubber is formed to have a thin thickness, a sufficient rubber sealing effect can be obtained-6- M360434 (4) The invention of claim 5, wherein the sealing plate has a recess around the hole around the hole for inserting the electrode, and the above-mentioned sealing plate is provided in any one of the above claims. The recess is laminated with an elastic rubber. In the above state, the "elastic rubber" is only provided around the sealing plate and around the insertion hole of the electrode. Here, the width of the elastic rubber functions as a sealing material for clogging the gap between the terminal and the insertion hole, between the sealing body and the gap between the capacitor outer casing φ body, and therefore it is sufficient to have a certain width. Therefore, in this aspect, even if the size of the sealing body, that is, the diameter of the sealing body is changed, it is not necessary to change the rubber width, and the function b can be sealed by the minimum rubber. In addition, it does not cover that the sealing body is provided with rubber in its entirety, but only in the portion which must be sealed by rubber, by making the thickness of the sealing plate thin and disposing rubber in the thin portion, the result of the sealing body can be improved. 〇 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第 第The exposed surface is covered with a thin rubber sheet. The elastic rubber is not laminated in the circular surface of the sealing plate, and the exposed surface other than the portion where the concave portion is formed is covered by the thin rubber sheet, and the portion of the thickness of the sealing body is thinned by the rubber sheet. Ensure strength. The invention of claim 7 relates to an electrolytic capacitor comprising: an electrolytic M360434 (5) capacitor sealing body according to any one of claims 1 to 6; and a capacitor element The electrolytic capacitor is sealed by a sealing body. In the above manner, an electrolytic capacitor having the same effect as that obtained by the sealing body for electrolytic capacitors of Patent Documents 1 to 6 can be obtained. According to the present invention, it is possible to provide a sealing body for an electrolytic capacitor and an electrolytic capacitor which do not cause cracks or cracks in the resin laminated board, and which are not wasted materials and can be mass-produced. [Embodiment] Next, the best form for carrying out the creation will be described with reference to Figs. 1 to 6 . (1) In the first embodiment, the sealing body 10 for an electrolytic capacitor according to the first embodiment of the present invention (hereinafter simply referred to as "sealing body 10") is shown in Fig. 1 as being attached to glass-containing glass fiber. The sealing plate 1 1 made of polypropylene is laminated with a rubber body 12 made of elastic rubber. The rubber in the present embodiment is preferably an elastomer of a thermoplastic elastomer or a thermosetting resin modified type, for example. The rubber body 12 laminated on the sealing plate 11 has a protruding frame 12c attached to the outermost portion of the sealing body. Thereby, the rubber body 3 2 a is formed into a basin shape on the surface side of the sealing body 10 . Further, the frame 1 2 c is a component which is not necessary for improving the sealing function of the rubber body 12 . Here, the above-mentioned 'electrolytic capacitor is obtained by accommodating a capacitor element impregnated with an electrolytic solution in a bottomed cylindrical aluminum case, and using the sealing body 1 provided with an electrode-8-M360434 (6) 13 0 closed way. Therefore, the shape of the sealing member 1 为 is a thin disk shape, and the size thereof is various depending on the shell diameter of the electrolytic capacitor to be used. Further, in Fig. 1, two holes 14 are provided in which the electrode 13 provided in the central portion of the sealing member 10 is inserted, and the number of the holes 14 is based on the electrolytic capacitor using the sealing body. If the specifications are appropriately changed, for example, an electrolytic capacitor composed of three or four electrodes is combined with the number thereof. Next, a procedure for producing the sealing body 1 说明 will be described. In the present embodiment, first, a polypropylene fiber in which glass fibers are mixed is injected into a disk having a disk shape and having a concave portion, and is solidified to produce a body of the sealing plate 11. Next, the cured sealing plate 11 is placed in another mold, and rubber is injected therein, and the rubber body 12 and the sealing plate 11 are integrated in such a manner that the rubber covers the entire surface of the sealing plate 11. At this time, the frame 1 2 c is formed on the outermost peripheral portion of the rubber body 12. The electrode 13 is not formed later, but is formed by inserting the electrode in advance when the mold injection sealing plate 11 and the rubber body 12 are molded. Formed and formed in advance. Further, in the above-described production process, the sealing plate is first molded, and then the rubber body is molded and integrated. However, the present invention is not limited thereto, and the molding may be carried out by molding the rubber body and then molding the sealing body. According to the sealing body 10 of the present embodiment formed as described above, the sealing plate is formed of polypropylene, and the sealing plate is molded by a die, and the rubber body and the sealing plate are integrally molded, thereby sealing the sealing body. One body -9- M360434 (7) is easier to make. Further, in the case where the sealing members are molded one by one by a mold, there is no waste portion other than the phenolic resin laminated sheet to which the rubber is attached, which is formed from the laminate. When the mold injection sealing plate 11 and the rubber body 12 are molded, by insert molding which is formed by inserting an electrode in advance, when the hole for the electrode is formed in the sealing body 10, the hole is not provided as in the conventional blanking. Produced in the surrounding area > cracked or cracked. In the present embodiment, glass fibers are further mixed in the polypropylene used as the material of the sealing plate 1 1 . Thereby, the strength of the sealing plate 11 can be increased, whereby the thickness of the sealing body itself can be made thin. (2) In the second embodiment, the sealing member 20 in the second embodiment of the present invention is improved in the sealing member 1 according to the first embodiment. Specifically, as shown in Fig. 2, i is not only a sealing plate. The entire surface of the constituent circle of 21 is also provided with rubber (side rubber 22a) on the side surface of the circumferential surface of the sealing plate 21 which is formed into a disk shape, so as to cover the bottom surface side and the side surface side of the sealing plate 2 1 by the rubber body 2 2 Way to constructor. In addition, the manufacturing process of the sealing body 20 is such that the rubber is injected into the circumferential surface of the sealing plate 21 to form the side rubber 22a at the time of rubber injection, and the configuration is the same as in the first embodiment. Further, the other configurations are the same as those of the first embodiment, and thus the description thereof is omitted. According to the sealing body 20 of the present embodiment as described above, not only the entire surface of the sealing plate-10-M360434 (8) 2 1 but also the side surface portion of the sealing plate 21 which forms the disk-shaped circumferential surface also forms the side rubber 22a. In addition to the effect of the sealing body 10 of the first embodiment, the entire side surface of the sealing body 20 is also in contact with the aluminum casing of the electrolytic capacitor, except that the rubber body 22 covers the bottom surface side and the side surface side of the sealing plate 2 1 . In other words, compared with the first embodiment, the contact area of the rubber body to the aluminum shell can be obtained, for example, the side surface portion of the sealing plate 2 1 can be obtained. Therefore, even if the thickness of the rubber body 22 is thin, it can be obtained. φ has the same rubber sealing effect as in the case of the first embodiment. (3) The third embodiment of the present invention is a modification of the configuration of the rubber body in the sealing member shown in the first or second embodiment. As shown in Fig. 3, in the sealing member 30 of the present embodiment, the sealing plate 31 has a sweet-shaped recessed portion 31a along its periphery, and a recess 31b is provided around the hole 34 in which the electrode 33 is provided. A rubber body 32 is formed in the recesses 31a and 31b. φ As shown in the cross-sectional view of Fig. 3(b), in the sealing member 30 of the present embodiment, the donut-shaped recessed portion 3 1 a is formed at both end portions of the sealing plate 31 with the respective widths toward the sealing plate 31. The radial direction is set so as to have a width of about one-half of a radius and a thickness of about one-third of the thickness of the sealing plate 31. Further, the recessed portion 31b is formed around the hole 34 in which the electrode 33 is provided, and has a width which is about 1/7 of the radius toward the sealing plate 31 in the radial direction, and the same as the inflow hole 3 1 a toward the thickness of the sealing plate 3 1 . The direction is set to a thickness of one-third of the thickness. The rubber body 32 is formed in the concave portion 31a and the concave portion 31b as described above, -11 - M360434
但形成在凹部3 1 b的橡膠體3 2 b係沿凹部3 1 b之孔形狀照 樣形成。另一方面，形成在凹部31a的橡膠體32a係於封 口體30最外周部分具備突出的框32c。即，如第3圖（b) . 所示’以相對於形成在凹部3 1 b的橡膠體3 2b之剖面爲長 方形狀，形成在凹部3 1 a的橡膠體3 2之剖面爲大致L形 狀的方式形成。但是，該框32c係爲了提高橡膠體之封住 功能者，並非必要構成要素。 φ 此外，此處係將橡膠體3 2以及爲了注該等所對應設 置的凹部31a及凹部31b，根據封口體30或封口板31之 尺寸比例予以說明，但該當尺寸比例只是最佳實施形態中 的例示，橡膠體係當作堵塞端子和其插入孔之隙間、封口 體周圍和電容器外裝殼體之隙間所用的密封材而發揮功能 者，因此爲了確保該當功能而在必要限度內可適當變更。 接著，說明有關該封口體30之製作程序。首先，在 具備圓盤狀凹部的模具注入混入有玻璃纖維的聚丙烯，使 # 其固化以製作封口板3 1本體。此時，在封口板3 1表面部 分形成凹部3 1 a及3 1 b。接著，將固化後的封口板3 1置 放在別的模具，注入橡膠使橡膠覆蓋封口板3 1的凹部 3 1 a及3 1 b部分。此時，橡膠流入凹部3 1 a及3 1 b，且在 該部分形成橡膠體32a及32b。此外，與第1實施形態同 樣地，電極33不是之後形成孔34，而是在上述模具注入 封口板31及橡膠體32成型時，藉由預先插入電極而成型 的插入成型而事先形成。 此外，上述製作程序係先將封口板成型，然後將橡膠 -12- M360434 (10) 體成型使其一體化’但本發明並不限於此，亦可藉由先 橡膠體成型而後將封口體成型使其一體化之程序進行製 〇 根據如以上之本實施形態之封口體3 0，橡膠體3 2 僅設在封口板周圍和電極的插入孔周圍而構成者。此處 橡膠的寬度係當作堵塞端子和其插入孔之隙間、封口體 圍和電容器外裝殼體之隙間所用的密封材而發揮功能者 φ 因此只要有一定寬度即可。因而，在本實施形態之構成 ，即使封口體之尺寸亦即直徑改變，橡膠的寬度也不須 變，而可藉由最低限的橡膠發揮封住功能。 又，不須涵蓋封口體3 0全面設置橡膠，以僅在必 藉由橡膠封住的部分使封口板厚度較薄，在該當厚度薄 部位配置橡膠的方式，結果可提高封口體全體之強度。 (4)第4實施形態 # 本創作之第4實施形態中的封口體4 0如第4圖所 ，係將第3實施形態所示之封口體3 0中的封口板3 1露 的部分以薄的橡膠片45被覆者。 如第4圖（b)剖視圖所示，在本實施形態之封口體 ，甜甜圈狀的凹部4 1 a在封口板4 1兩端部分，係以各 的帶寬朝封口板41半徑方向對半徑爲5分之1程度之 度、和朝封口板41厚度方向爲3分之1程度之厚度的 式設置。又，凹部41b在設有電極43之孔44周圍’係 各自的帶寬朝封口板4 1半徑方向對半徑爲7分之1程 將 作 係 ， 周 中 改 須 的 示 出 40 白 寬 方 以 度 -13- M360434 (11) 之寬度、和流入孔41a同樣朝封口板41厚度方向: 之1程度之厚度的方式設置。 橡膠體42係如上述形成在凹部41a及凹部4] 但形成在凹部4 1 b的橡膠體42b係沿凹部4 1 b之孔 樣形成。另一方面，形成在凹部41a的橡膠體42a 口體40最外周部分以後述之橡膠片42之厚度份具 的框42c。即，如第4圖（b)所示，以相對於形成 3 1 b的橡膠體3 2b之剖面爲長方形狀，形成在凹部 橡膠體3 2之剖面爲大致L形狀的方式形成。此外 4 2 c係爲了提高橡膠體1 2的封住功能者，並非必 要素。 橡膠片45係以被覆形成在該凹部41a及凹部 橡膠體42a及42b表面、和露出在封口板41表面 之方式設置，橡膠片45周圍係藉由上述之框42c 繞’橡膠片45的厚度和該橡膠體42a的突出之框 厚度係構成大致相同。 此外，此處將橡膠體42及橡膠片45以及爲了 等所對應設置的凹部4 1 a及凹部4 1 b，根據封口體 封口體4 1的尺寸比例予以說明，該當尺尺寸比例 佳實施形態中的例示，橡膠體係當作堵塞端子和其 之隙間、和封口體周圍和電容器外裝殼體之隙間所 封材而發揮功能者，爲了確保該當功能而可在必要 做適當變更。 接著，說明有關該封口體40的製作程序。首 爲3分 b者， 形狀照 係於封 備突出 在凹部 3 1 a的 ，該框 要構成 41b的 的部分 而被圍 42c的 注入該 40或 只是最 插入孔 用的密 限度內 先，在 -14- M360434 (12) 具備圓盤狀凹部的模具注入混入有玻璃纖維的聚丙嫌，使 其固化以製作封口板41本體。此時在封口板41表面部分 形成凹部4 1 a及4 1 b。接著，將固化後的封口板4丨置放 . 在別的模具’注入橡膠使橡膠覆蓋封口板41的凹部4 i a 及41b部分。此時’橡膠流入凹部41&及41b，在該部分 开夕成橡膠體a及b且亦形成框42c。再者，形成橡膠體42 後’以被覆形成在凹部41a及凹部41b的橡膠體42a及b φ 表面、和露出在封口板41表面的部分之方式形成橡膠片 45。此外’與第丨實施形態同樣地，電極43不是之後形 成孔44’而是在上述模具注入封口板41及橡膠體42以 及橡膠片45成型時，藉由預先插入電極而成型的插入成 型而事先形成。 此外’上述製作程序係先將封口板成型，然後將橡膠 體成型且一體化，但本發明不限於此，亦可藉由先將橡膠 體成型而後將封口體成型且一體化的程序進行製作。 # 根據如以上的本實施形態之封口體40，橡膠體32係 僅設在封口板周圍、和電極的插入孔周圍而構成者。此處 ’橡膠的寬度係當作堵塞端子和其插入孔之隙間、封口體 周圍和電容器外裝殼體之隙間所用的密封材而發揮功能者 ，因此只要有一定寬度即可。因而，本實施形態之構成中 ，即使封口體的尺寸亦即直徑改變，橡膠的寬度也不須改 變’而可藉由最低限的橡膠發揮封住功能。 又，藉由以橡膠片45被覆層積在凹部41a及凹部 41b的橡膠體42a及b表面、和露出在封口板41表面的 -15- M360434 (13) 部分之方式，可針對封口體40厚度較薄的部分利用橡膠 確保強度。 (5)其他實施形態 本創作不限於上述實施形態所示之態樣’例如亦包含 如以下之態樣。例如，第3實施形態中，已說明本創作之 橡膠體係當作堵塞端子和其插入孔之隙間、封口體周圍和 電容器外裝殼體之隙間所用的密封材而發揮功能者’因此 爲了確保該當功能而可在必要限度內做適當變更之主旨’ 若是利用實例顯示之，則如第5圖及第6圖所示者。 第5圖係針對第3實施形態中的封口體3 0所示之構 成，將封口體經變更大小後之例以（a)~(c)顯示者，第6圖 係針對第4實施形態中的封口體40所示之構成，將封口 體經變更大小後之例以（a)〜（c)顯示者。 據此，以小徑構成封口體時，係將設在封口體周圍的 橡膠體32a、42a和設在電極周圍的橡膠體32b、42b的厚 度予以連結而構成，橡膠片4 5的構成亦被適當變更。 【圖式簡單說明】 第1圖表示本創作之第1實施形態中的封口體之俯視 圖（a)及剖視圖（b)。 第2圖表示本創作之第2實施形態中的封口體之俯視 圖（a)及剖視圖（b)。 第3圖表示本創作之第3實施形態中的封口體之俯視 -16- M360434 (14) 圖（a)及剖視圖（b)。 第4圖表示本創作之第4實施形態中的封口體之俯視 圖（a)及剖視圖（b)。 第5圖表示本創作之其他實施形愚中的封口體之俯視 圖。 第6圖表示本創作之其他實施形悲中的封口體之俯視 圖。 鲁 第7圖係表示以往的封口體之構成之體圖（a)、及 表示以往的封口體之製作方法的槪略之模型圖（b)。 第8圖表示電解電容器全體構成之示意圖。 【主要元件符號說明】 1、10、20、30、40:電解電容器用封口體 2 :層積板 3 :橡膠片 # 4 ··外部端子 5 :電容器元件 6 ·銘殼 1 1、21、3 1、41 :封口板 12、 22、 32、 32a、 32b、 42、 42a、 42b ：橡膠體 13 、 23 、 33 、 43 :電極However, the rubber body 3 2 b formed in the concave portion 3 1 b is formed along the shape of the hole of the concave portion 3 1 b. On the other hand, the rubber body 32a formed in the concave portion 31a is provided with a frame 32c that protrudes at the outermost peripheral portion of the sealing body 30. That is, as shown in Fig. 3(b), the cross section of the rubber body 3 2b formed in the concave portion 3 1 b is a rectangular shape, and the cross section of the rubber body 3 2 formed in the concave portion 3 1 a is substantially L-shaped. The way to form. However, the frame 32c is not necessarily a component in order to improve the sealing function of the rubber body. In addition, the rubber body 3 2 and the recessed portion 31a and the recessed portion 31b which are provided corresponding to each other are described in terms of the size ratio of the sealing body 30 or the sealing plate 31, but the dimensional ratio is only in the preferred embodiment. As an example, the rubber system functions as a sealing material for the gap between the plugging terminal and the insertion hole, between the sealing body and the gap between the capacitor outer casing, and therefore can be appropriately changed within necessary limits in order to secure the function. Next, a procedure for producing the sealing body 30 will be described. First, polypropylene which is mixed with glass fibers is injected into a mold having a disk-shaped recess, and is solidified to form a body of the sealing plate 31. At this time, concave portions 3 1 a and 3 1 b are formed on the surface portion of the sealing plate 3 1 . Next, the cured sealing plate 3 1 is placed in another mold, and rubber is injected to cover the concave portions 3 1 a and 3 1 b of the sealing plate 3 1 with rubber. At this time, the rubber flows into the recesses 3 1 a and 3 1 b, and the rubber bodies 32a and 32b are formed in this portion. Further, in the same manner as in the first embodiment, the electrode 33 is not formed later, but is formed in advance by insert molding which is formed by inserting an electrode in advance when the mold injection sealing plate 31 and the rubber body 32 are molded. In addition, the above-mentioned manufacturing process first forms a sealing plate, and then the rubber-12-M360434 (10) body is molded and integrated. However, the present invention is not limited thereto, and the sealing body may be formed by molding the rubber body first. According to the sealing body 30 of the present embodiment as described above, the rubber body 3 2 is formed only around the sealing plate and around the insertion hole of the electrode. Here, the width of the rubber functions as a sealing member for blocking the gap between the terminal and the insertion hole, and between the sealing body and the gap between the capacitor outer casing, so that it has a certain width. Therefore, in the configuration of the present embodiment, even if the size of the sealing member, that is, the diameter is changed, the width of the rubber does not have to be changed, and the sealing function can be exhibited by the minimum rubber. Further, it is not necessary to cover the sealing member 30 to integrally provide the rubber so that the thickness of the sealing plate is made thin only in the portion which must be sealed by the rubber, and the rubber is disposed in the thin portion. As a result, the strength of the entire sealing body can be improved. (4) In the fourth embodiment, the sealing member 40 in the fourth embodiment of the present invention is a portion in which the sealing plate 31 in the sealing member 30 shown in the third embodiment is exposed. The thin rubber sheet 45 is covered. As shown in the cross-sectional view of Fig. 4(b), in the sealing body of the present embodiment, the donut-shaped recessed portion 4 1 a has a radius in the radial direction of the sealing plate 41 at the both end portions of the sealing plate 41. It is a degree of a degree of about one-fifth and a thickness of about one-third of the thickness direction of the sealing plate 41. Further, the recessed portion 41b is disposed around the hole 44 in which the electrode 43 is provided. The respective bandwidths of the recessed portion 41b in the radial direction of the sealing plate 41 are set to be one-seventh of a radius, and the mid-circumference is shown to be 40 degrees wide. The width of the -13- M360434 (11) is set to the thickness of the sealing plate 41 in the same manner as the inflow hole 41a. The rubber body 42 is formed in the concave portion 41a and the concave portion 4 as described above, but the rubber body 42b formed in the concave portion 4 1 b is formed along the hole of the concave portion 4 1 b. On the other hand, the rubber body 42a of the recessed portion 41a is formed in the outermost peripheral portion of the mouthpiece 40, and the frame 42c of the thickness of the rubber sheet 42 will be described later. In other words, as shown in Fig. 4(b), the cross section of the rubber body 3 2b formed with respect to the 3 1 b is formed in a rectangular shape, and the cross section of the rubber portion 3 2 is formed in a substantially L shape. In addition, the 4 2 c is not essential for improving the sealing function of the rubber body 1 2 . The rubber sheet 45 is formed so as to be coated on the surfaces of the recessed portion 41a and the recessed rubber bodies 42a and 42b and exposed on the surface of the sealing plate 41. The rubber sheet 45 is wound around the thickness of the rubber sheet 45 by the above-mentioned frame 42c. The frame thickness of the protruding portion of the rubber body 42a is substantially the same. Here, the rubber body 42 and the rubber sheet 45, and the concave portion 4 1 a and the concave portion 4 1 b which are provided corresponding to each other, will be described based on the dimensional ratio of the sealing body sealing body 41, and the scale ratio is preferably in the embodiment. As an example, the rubber system functions as a material for sealing between the plugging terminal and the gap between the sealing member and the gap between the sealing member and the capacitor outer casing, and may be appropriately changed in order to secure the function. Next, a procedure for producing the sealing body 40 will be described. The first is 3 points b, the shape is attached to the seal protruding in the recess 3 1 a, the frame is to constitute the portion of the 41b and the circumference of the 42c is injected into the 40 or only the minimum hole for the insertion hole. -14- M360434 (12) A mold having a disk-shaped recess is filled with a polypropylene fiber mixed with glass fibers, and cured to form a body of the sealing plate 41. At this time, concave portions 4 1 a and 4 1 b are formed on the surface portion of the sealing plate 41. Next, the cured sealing plate 4 is placed. The rubber is injected into the other mold to cover the concave portions 4 i a and 41b of the sealing plate 41 with rubber. At this time, the rubber inflow concave portions 41 & and 41b are formed into the rubber bodies a and b at this portion, and the frame 42c is also formed. Further, after the rubber body 42 is formed, the rubber sheet 45 is formed so as to cover the surfaces of the rubber bodies 42a and bφ formed in the concave portion 41a and the concave portion 41b and the portions exposed on the surface of the sealing plate 41. In the same manner as in the third embodiment, the electrode 43 is formed by inserting the electrode before the mold injection sealing plate 41, the rubber body 42 and the rubber sheet 45 are formed, instead of forming the hole 44'. form. Further, in the above-described production process, the sealing plate is first molded, and then the rubber body is molded and integrated. However, the present invention is not limited thereto, and it may be produced by molding a rubber body and then molding and integrating the sealing body. # According to the sealing body 40 of the present embodiment as described above, the rubber body 32 is formed only around the sealing plate and around the insertion hole of the electrode. Here, the width of the rubber functions as a sealing material for the gap between the plugging terminal and the gap between the insertion hole and the gap between the sealing body and the capacitor outer casing, and therefore it is sufficient to have a certain width. Therefore, in the configuration of the present embodiment, even if the size of the sealing member, that is, the diameter is changed, the width of the rubber does not need to be changed, and the sealing function can be exhibited by the minimum rubber. Further, the thickness of the sealing body 40 can be made by covering the surface of the rubber bodies 42a and b of the concave portion 41a and the concave portion 41b with the rubber sheet 45 and the portion of the -15-M360434 (13) exposed on the surface of the sealing plate 41. The thinner part uses rubber to ensure strength. (5) Other Embodiments The present invention is not limited to the aspect shown in the above embodiment, and includes, for example, the following aspects. For example, in the third embodiment, the rubber system of the present invention has been described as functioning as a sealing material for the gap between the plugging terminal and the insertion hole, between the sealing body and the gap between the capacitor outer casings. The purpose of the function can be changed within the necessary limits. If it is displayed by an example, it is as shown in Figures 5 and 6. Fig. 5 is a view showing the configuration of the sealing body 30 in the third embodiment, and the examples in which the sealing body is resized are shown in (a) to (c), and the sixth drawing is in the fourth embodiment. The sealing body 40 is configured as shown in (a) to (c). According to this, when the sealing body is formed by a small diameter, the rubber bodies 32a and 42a provided around the sealing body and the rubber bodies 32b and 42b provided around the electrode are connected to each other, and the rubber sheet 45 is also configured. Change as appropriate. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a plan view (a) and a cross-sectional view (b) of a sealing member according to a first embodiment of the present invention. Fig. 2 is a plan view (a) and a cross-sectional view (b) of the sealing member in the second embodiment of the present invention. Fig. 3 is a plan view of a sealing body in the third embodiment of the present invention -16- M360434 (14) (a) and a cross-sectional view (b). Fig. 4 is a plan view (a) and a cross-sectional view (b) of the sealing member in the fourth embodiment of the present invention. Fig. 5 is a plan view showing a sealing body in another embodiment of the present invention. Fig. 6 is a plan view showing the sealing body in another embodiment of the present invention. Lu 7 is a body diagram (a) showing the structure of a conventional sealing body, and a schematic model (b) showing a method of manufacturing a conventional sealing body. Fig. 8 is a view showing the overall configuration of an electrolytic capacitor. [Description of main component symbols] 1, 10, 20, 30, 40: Sealing body for electrolytic capacitor 2: laminated plate 3: rubber sheet # 4 · External terminal 5: capacitor element 6 · Ming case 1 1, 21, 3 1, 41: sealing plates 12, 22, 32, 32a, 32b, 42, 42a, 42b: rubber bodies 13, 23, 33, 43: electrodes
14 、 24 、 34 、 44 :孑L 12c > 22c ' 32c ' 42c ： ti 22a :側面橡膠 -17- M360434 (15) 31a、 31b、 41a、 41b ：凹部 45 :橡膠片14 , 24 , 34 , 44 :孑L 12c > 22c ' 32c ' 42c : ti 22a : side rubber -17- M360434 (15) 31a, 31b, 41a, 41b : recess 45 : rubber sheet
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