JPS6023887Y2 - electric wire fuse - Google Patents

Description

【考案の詳細な説明】 考案の目的 （産業上の利用分野） 本考案は電線ヒユーズの改良に関する。[Detailed explanation of the idea] Purpose of invention (Industrial application field) The present invention relates to improvements in electric wire fuses.

（従来技術） この種電線ヒユーズは、周知のように防爆密閉型であり
、雨水等の浸入を防止するため、従来は電線接続端子と
保護カバ一部等の嵌合する部分に、シリコンゴム接着剤
及びエポキシ樹脂接着剤等を充填腰接着作用と気密保持
を兼ねた構造が知られている。(Prior art) As is well known, this type of electric wire fuse is an explosion-proof sealed type, and in order to prevent the infiltration of rainwater, etc., conventionally, silicone rubber has been bonded to the fitting part of the electric wire connection terminal and a part of the protective cover. A structure is known that is filled with adhesive, epoxy resin adhesive, etc. and has both adhesive action and airtightness.

（考案が解決しようとする問題点） しかしながら、電線ヒユーズ完成後における気密状態の
確認は難しく、また、気密漏れが生じた場合には、電線
ヒユーズ本来の機能である事故電流しゃ断性能に影響を
及ぼすことからして、接着性能と気密性能を加味する上
での接着作業には充分な管理が要求され、組付は作業に
は非常に手間のかかるものであった。(Problem that the invention aims to solve) However, it is difficult to check the airtightness of the electric wire fuse after it is completed, and if an airtight leak occurs, it will affect the fault current breaking performance, which is the original function of the electric wire fuse. For this reason, sufficient management was required for the adhesion work in consideration of adhesion performance and airtightness performance, and assembly was extremely time-consuming.

考案の構成 （問題点を解決するための手段） この考案は前記問題点を解消するためになされたもので
あって、電線接続端子の内端に鍔部を設け、同鍔部と絶
縁筒両端に設けた段差部との間に０１Ｊングを介装する
と共に、電線接続端子と保護カバー及び絶縁筒と保護カ
バーとの間にシリコンゴム接着剤及びエポキシ樹脂接着
剤等を充填接着することにより、二重気密構造としたも
のである。Structure of the invention (Means for solving the problem) This invention was devised to solve the above-mentioned problem. A flange is provided at the inner end of the wire connection terminal, and the flange and both ends of the insulating tube are connected to each other. By inserting an 01J ring between the stepped portion provided in the 2nd side, and filling and adhering silicone rubber adhesive, epoxy resin adhesive, etc. between the wire connecting terminal and the protective cover, and between the insulating tube and the protective cover, It has a double airtight structure.

（作 用） 前記構成による接着剤の充填と、Ｏリングにて可溶体部
への雨水等の浸入は確実にしゃ断され、ヒユーズ製作時
においては、単に接着剤の接着性能管理のみでよく、こ
の接着面に対し気密を考慮する必要がない。(Function) The filling of the adhesive with the above configuration and the O-ring reliably block the infiltration of rainwater, etc. into the fusible part, and when manufacturing the fuse, it is only necessary to manage the adhesion performance of the adhesive. There is no need to consider airtightness of the adhesive surface.

（実施例） 以下、本考案を具体化した一実施例を図面に従って説明
すると次の通りである。(Example) An example embodying the present invention will be described below with reference to the drawings.

（図参照）透明な合成樹脂よりなり、一端は閉塞され中
心部に電線接続端子挿通孔１ａを、他端には中心部に電
線接続端子挿通孔２ａを有する支持筒２を嵌着した絶縁
筒１の両端各々挿通孔１ａ、２ａには、外方へ一端を突
出した状態で電線接続端子３．４が突設されている。(See figure) An insulating tube made of transparent synthetic resin, with one end closed and a support tube 2 fitted with a wire connection terminal insertion hole 1a in the center and a wire connection terminal insertion hole 2a in the center at the other end. A wire connection terminal 3.4 is provided in each of the insertion holes 1a, 2a at both ends of the wire 1, with one end protruding outward.

これら電線接続端子３．４は各々内端に設けた鍔部３ａ
、４ａを絶縁筒１の周内端部において、同絶縁筒１に一
体形成された段差部１ｂ内面１ｃ及び前記絶縁筒１への
支持筒２の嵌着にて形成された段差部の内面２ｂに各々
係合させ、各々ピン５，６にて固設されている。These wire connection terminals 3.4 each have a collar portion 3a provided at the inner end.
, 4a at the inner end of the circumference of the insulating tube 1, an inner surface 1c of a stepped portion 1b integrally formed on the insulating tube 1, and an inner surface 2b of the stepped portion formed by fitting the support tube 2 into the insulating tube 1. are engaged with each other and fixed with pins 5 and 6, respectively.

また、絶縁筒１の両端は、保護カバー７゜８にて密封さ
れ、同保護カバー７．８の内周面と絶縁筒１の両端外周
とが接着され、同保護カバー７．８の内部空隙部にはシ
リコンゴム等の接着剤を充填腰さらには前記電線接続端
子鍔部３ａ。Further, both ends of the insulating cylinder 1 are sealed with protective covers 7.8, and the inner peripheral surface of the protective cover 7.8 and the outer periphery of both ends of the insulating cylinder 1 are adhered, and the internal void of the protective cover 7.8 is sealed. The portion is filled with an adhesive such as silicone rubber, and further the wire connecting terminal flange portion 3a.

４ａの外周面３ｂ、４ｂと段差部内面１ｃ、２ｂと絶縁
筒１内周面とにより形成される環状の空隙にＯＩＪング
９，１０を介装して二重気密構造としている。OIJ rings 9 and 10 are interposed in an annular gap formed by the outer circumferential surfaces 3b and 4b of 4a, the stepped inner surfaces 1c and 2b, and the inner circumferential surface of the insulating cylinder 1 to provide a double airtight structure.

可溶体部には、大電流しゃ断部Ａと小電流しゃ断部Ｂと
からなり、電線接続端子３鍔部３ａ内面に対しセラミッ
クペーパー等からなるパツキン１１を介して配設された
内筒１２内に納められている。The fusible part consists of a large current interrupting part A and a small current interrupting part B, and is arranged in an inner cylinder 12 that is disposed on the inner surface of the flange 3a of the wire connecting terminal 3 via a packing 11 made of ceramic paper or the like. It is stored.

大電流しゃ断部Ａには、前記パツキン１１を介して電線
接続端子３鍔部３ａにて一端が閉塞され、他端は接続子
１３にて閉塞されたガラス等からなる絶縁筒１４と、同
絶縁筒１４内において一端を電線接続端子３の内端に対
しカシメ着等により接続され、他端が前記接続子１３に
接続された短絡等の大電流しゃ断時にしゃ断し得る高温
可溶体１５とを配設している。The large current interrupting part A includes an insulating tube 14 made of glass or the like, one end of which is closed by the flange 3a of the wire connection terminal 3 via the packing 11, and the other end of which is closed by the connector 13. A high-temperature fusible member 15 is disposed within the tube 14, one end of which is connected to the inner end of the wire connection terminal 3 by caulking or the like, and the other end of which is connected to the connector 13, which can be cut off when a large current is cut off due to a short circuit or the like. It is set up.

また、小電流しゃ断部Ｂには、一端が前記高温可溶体１
５と直列に接続子１３を介してハンダ付は等のろう付け
またはカシメ付けによって接続され、他端が仕切板１６
を介して電線接続端子４内端にカシメ着等にて接続され
た低温可溶体１７を配設し、過負荷等による所定以上の
電流が流れた時にしゃ断するように構成されている。Further, the small current interrupting part B has one end connected to the high temperature fusible body 1.
5 in series with the connector 13 by soldering or caulking, and the other end is connected to the partition plate 16 by soldering or caulking.
A low-temperature fusible member 17 connected to the inner end of the wire connecting terminal 4 by caulking or the like is disposed so as to be cut off when a current exceeding a predetermined value flows due to an overload or the like.

なお、電線接続端子３，４には電線挿入孔３ｃ、４ｃを
穿設し、同電線挿入孔３ｃ、４ｃは高温及び低温可溶体
１５．１７の接続穴３ｄ、４ｄとは盲状に形成されてい
る。Note that the wire connection terminals 3 and 4 are provided with wire insertion holes 3c and 4c, and the wire insertion holes 3c and 4c are formed blindly from the connection holes 3d and 4d of the high temperature and low temperature fusible materials 15 and 17. ing.

コノように構成された電線ヒユーズにあっては、仮に保
護カバーと絶縁筒との接着及び保護カバー内部空隙部へ
の充填剤の充填接着が充分でなかった場合でも、鍔部を
電線接続端子と一体形成腰しかも電線挿入孔と接続穴と
を盲状に形成すると共に、絶縁筒内周と電線接続端子鍔
部外周面との間にＯリングを介装したことにより、絶縁
筒内部は完全に外部としゃ断され、雨水等の内筒１２内
への浸入は確実にしゃ断され、同内筒１２内に位置する
可溶体部の気密は確実に保持され、常に電線ヒユーズは
安定した本来のしゃ断性能を維持できるものである。In a wire fuse configured like this, even if the adhesive between the protective cover and the insulating cylinder and the filling of the filler into the internal cavity of the protective cover are not sufficient, the flange can be used as a wire connection terminal. In addition, the wire insertion hole and the connection hole are formed in a blind shape, and an O-ring is inserted between the inner circumference of the insulating tube and the outer circumferential surface of the wire connecting terminal flange, so that the inside of the insulating tube is completely sealed. It is cut off from the outside, and the intrusion of rainwater etc. into the inner cylinder 12 is reliably cut off, and the airtightness of the fusible body located inside the inner cylinder 12 is reliably maintained, and the electric wire fuse always maintains its stable original breaking performance. can be maintained.

考案の効果 以上、詳述したように本考案は、０リングを電線接続端
子に設けた鍔部と絶縁筒の段差部及び支持筒との間に介
装した簡単な構造にて、従来のように、接着のみに気密
を頼ることがなく接着作業が容易であると共に、気密を
充分保ち得るものであり、産業上多いに利用し得る考案
である。Effects of the Invention As detailed above, the present invention has a simple structure in which the O-ring is interposed between the flange provided on the wire connection terminal, the stepped part of the insulating tube, and the support tube, and it is not different from the conventional one. In addition, the adhesive work is easy without relying solely on adhesion for airtightness, and airtightness can be maintained sufficiently, making it a device that can be widely used in industry.

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

図は本考案を具体化した電線ヒユーズの断面図である。 １・・・・・・絶縁筒、ｌａ、２ａ・・・・・・挿通孔
、３，４・・・・・・電線接続端子、３ａ、４ａ・・曲
鍔部、５，６・・・・・ゼン、７，８・・・・・・保護
カバー ９，１ｏ・・・・・・Ｏリング、１２・・・・
・・内筒、１５・・・・・・高温可溶体、１７・・・・
・・低温可溶体。The figure is a sectional view of a wire fuse embodying the present invention. 1...Insulating cylinder, la, 2a...Insertion hole, 3, 4...Wire connection terminal, 3a, 4a...Curved flange, 5, 6... ...Zen, 7,8...Protective cover 9,1o...O ring, 12...
...Inner cylinder, 15...High temperature soluble material, 17...
...Low temperature soluble material.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 絶縁筒の両端部に、内端に可溶体部を接続した一対の電
線接続端子を突出させ、保護カバーにより密封してなる
電線ヒユーズにおいて、前記絶縁筒の周内端部には環状
の段差部を形成し、また、各電線接続端子内端には鍔部
を一体形成すると共に、各電線接続端子を前記段差部内
面に前記鍔部を係合させて絶縁筒外部に突出させ、さら
には前記係合にて形成される鍔部外周面と絶縁筒内周面
との環状の空隙にＯリングを介装したことを特徴とする
電線ヒユーズ。In an electric wire fuse in which a pair of electric wire connection terminals having fusible parts connected to the inner ends protrude from both ends of an insulating tube and are sealed with a protective cover, an annular stepped portion is provided at the inner end of the circumference of the insulating tube. Further, a flange is integrally formed on the inner end of each wire connection terminal, and the flange is engaged with the inner surface of the stepped portion so that each wire connection terminal protrudes outside the insulating cylinder. An electric wire fuse characterized in that an O-ring is interposed in an annular gap formed by engagement between an outer peripheral surface of a flange and an inner peripheral surface of an insulating cylinder.