JP4111092B2 - Terminal structure - Google Patents

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JP4111092B2
JP4111092B2 JP2003281245A JP2003281245A JP4111092B2 JP 4111092 B2 JP4111092 B2 JP 4111092B2 JP 2003281245 A JP2003281245 A JP 2003281245A JP 2003281245 A JP2003281245 A JP 2003281245A JP 4111092 B2 JP4111092 B2 JP 4111092B2
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sealing agent
piece
terminal
base
movable contact
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JP2005050663A (en
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崇俊 本庄
雅和 大西
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Description

本発明は、1枚の金属板を2つに折り重ねて形成した端子を器体の底面から突出させ、該底面をシール剤で封止した電気機器の端子構造に関するものである。   The present invention relates to a terminal structure of an electric device in which a terminal formed by folding a single metal plate into two is protruded from the bottom surface of a container, and the bottom surface is sealed with a sealant.

この種の端子構造を用いた電気機器として、図13及び図14に示すような構造を有する電磁継電器が従来より提供されている。   As an electric device using this type of terminal structure, an electromagnetic relay having a structure as shown in FIGS. 13 and 14 has been conventionally provided.

この電磁継電器では、ベース1にインサート成形されたL字形の継鉄2の横片の孔(図示せず)に、励磁用コイル3を巻胴に巻回するコイルボビン4の中心透孔に挿通させた鉄心5の先端をかしめ固定してあり、さらにベース1には、NO側固定接点6を設けた固定接点端子7と、NC側固定接点8を設けた固定接点端子9とを取り付けてある。なお励磁用コイル3の両端はベース1に貫設された孔に挿通されるコイル端子3a,3aに電気的に接続されている。   In this electromagnetic relay, an excitation coil 3 is inserted into a central through hole of a coil bobbin 4 wound around a winding drum through a hole (not shown) of a lateral piece of an L-shaped yoke 2 insert-molded in a base 1. The tip of the iron core 5 is caulked and fixed, and a fixed contact terminal 7 provided with an NO side fixed contact 6 and a fixed contact terminal 9 provided with an NC side fixed contact 8 are attached to the base 1. Both ends of the exciting coil 3 are electrically connected to coil terminals 3a and 3a that are inserted through holes formed in the base 1.

また、継鉄2の縦片2aの外側面に沿うように接触ばねブロック10の接触ばね11の垂下片12を配置し、垂下片12に形成した各一対の孔12aに継鉄2の縦片2aの外側面に突出形成した各一対のダボ2cを挿入してかしめることで、接触ばねブロック10を継鉄2に固着するようになっている。なお接触ばねブロック10は、接触ばね11と後述の可動接点17,17と接極子18とで構成される。   Further, the hanging piece 12 of the contact spring 11 of the contact spring block 10 is arranged along the outer surface of the longitudinal piece 2 a of the yoke 2, and the vertical piece of the yoke 2 is inserted into each pair of holes 12 a formed in the hanging piece 12. The contact spring block 10 is fixed to the yoke 2 by inserting and caulking each pair of dowels 2c protrudingly formed on the outer surface of 2a. The contact spring block 10 includes a contact spring 11, movable contacts 17 and 17, which will be described later, and an armature 18.

接触ばね11(ヒンジばね)は、垂下片12の下端から延長形成された可動接点端子13と、垂下片12の上端両側より上方に一体延長した後、その上端から斜め下方に延長した屈曲片14,14と、各屈曲片14,14の先端に一体連設し、板面が垂下片12の板面に略直交するように形成された固定片15と、固定片15の先端両側より延長形成されたY形片16とを有している。Y形片16の中脚は斜め下向きに突出した後、その下端から垂下片12の板面に略直交する方向に突出しており、その先端部の上下両面に可動接点17,17が固着されている。また、固定片15の下面側に配置した短冊状の接極子18のダボ18aを、固定片15に設けた孔に挿通してかしめることで接極子18が固定片15の下面に固定される。この接極子18は長手方向の一端部を継鉄2の縦片2aの上端部に当接させるとともに、他端部を鉄心5の吸着面5aに対向させており、屈曲片14,14が撓むことによって継鉄2の縦片2aの上端部を支点として回動自在に支持されている。   The contact spring 11 (hinge spring) includes a movable contact terminal 13 extending from the lower end of the drooping piece 12 and a bent piece 14 extending integrally from above both upper ends of the drooping piece 12 and then extending obliquely downward from its upper end. 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14. Y-shaped piece 16. The middle leg of the Y-shaped piece 16 projects obliquely downward, and then projects in the direction substantially perpendicular to the plate surface of the hanging piece 12 from its lower end, and the movable contacts 17 and 17 are fixed to the upper and lower surfaces of the tip. Yes. The armature 18 is fixed to the lower surface of the fixed piece 15 by inserting and crimping the dowels 18 a of the strip-shaped armature 18 arranged on the lower surface side of the fixed piece 15 into the holes provided in the fixed piece 15. . The armature 18 has one end in the longitudinal direction in contact with the upper end of the vertical piece 2a of the yoke 2, and the other end is opposed to the adsorption surface 5a of the iron core 5. The bent pieces 14 and 14 are bent. As a result, the upper end portion of the vertical piece 2a of the yoke 2 is supported so as to be rotatable.

また、各固定接点端子7,9は逆L字形に折り曲げ形成されたもので、各横片7a,9aに各固定接点6,8をかしめ固定し、また各垂直片7b,9bの下端に外部端子片7c、9cを一体延長形成しており、各固定接点端子7,9は、各固定接点6,8が可動接点17,17に対向するようにしてベース1に固定される。すなわち、固定接点6,8は間隙を介して上下方向に対向配置されるとともに、固定接点6,8の間にY形片16の先端部が挿入されて、Y形片16の上下両面に設けた可動接点17,17が固定接点6,8に対向しており、励磁用コイル3に通電していない状態では屈曲片14,14のばね弾性によって固定片15が上方へ弾発することで接極子18が鉄心5の吸着面5aから離れて、Y形片16の中脚先端の上面側に設けた可動接点17がNC側の固定接点8に接触する。一方、励磁用コイル3に通電すると、励磁用コイル3に発生する磁力によって接極子18が鉄心5の吸着面5aに吸着され、屈曲片14,14のばね力に抗して固定片15が下方に移動するので、Y形片16の中脚先端の下面側に設けた可動接点17がNO側の固定接点6に接触する。   The fixed contact terminals 7 and 9 are bent in an inverted L shape, and the fixed contacts 6 and 8 are caulked and fixed to the horizontal pieces 7a and 9a, respectively, and the lower ends of the vertical pieces 7b and 9b are externally connected. Terminal pieces 7c and 9c are integrally extended. The fixed contact terminals 7 and 9 are fixed to the base 1 with the fixed contacts 6 and 8 facing the movable contacts 17 and 17, respectively. That is, the fixed contacts 6, 8 are arranged opposite to each other in the vertical direction with a gap, and the tip of the Y-shaped piece 16 is inserted between the fixed contacts 6, 8 and provided on both the upper and lower surfaces of the Y-shaped piece 16. When the movable contacts 17 and 17 are opposed to the fixed contacts 6 and 8, and the energizing coil 3 is not energized, the fixed piece 15 is elastically springed upward by the spring elasticity of the bent pieces 14 and 14, thereby the armature. 18 moves away from the adsorption surface 5 a of the iron core 5, and the movable contact 17 provided on the upper surface side of the middle leg tip of the Y-shaped piece 16 comes into contact with the fixed contact 8 on the NC side. On the other hand, when the exciting coil 3 is energized, the armature 18 is attracted to the attracting surface 5a of the iron core 5 by the magnetic force generated in the exciting coil 3, and the fixed piece 15 is moved downward against the spring force of the bent pieces 14,14. Therefore, the movable contact 17 provided on the lower surface side of the tip of the middle leg of the Y-shaped piece 16 contacts the fixed contact 6 on the NO side.

ところで、図13及び図14に示す電磁継電器は2接点タイプの電磁継電器であり、ベース1には一対の継鉄2が並べてインサート成形されており、各々の継鉄2に、励磁用コイル3が巻胴に巻回されたコイルボビン4の中心透孔に鉄心5を通して、この鉄心5の先端部を継鉄2の横片の孔にかしめ固定するとともに、各々の継鉄2の縦片2aに接触ばねブロック10を取り付けてある。そして、ベース1に取り付けられた各部品を覆うようにして、下面が開口した箱状のカバー19を被せた後に、ベース1の底面にシール剤20を供給して、ベース1及びカバー19からなる器体の内部を封止している。   Incidentally, the electromagnetic relay shown in FIGS. 13 and 14 is a two-contact type electromagnetic relay, and a pair of yokes 2 are insert-molded on the base 1, and an excitation coil 3 is provided on each of the yokes 2. The iron core 5 is passed through the central through hole of the coil bobbin 4 wound around the winding drum, and the tip of the iron core 5 is caulked and fixed to the hole in the horizontal piece of the yoke 2 and is in contact with the vertical piece 2a of each yoke 2. A spring block 10 is attached. Then, after covering the parts attached to the base 1 and covering the box-shaped cover 19 whose bottom surface is opened, the sealing agent 20 is supplied to the bottom surface of the base 1 to form the base 1 and the cover 19. The inside of the container is sealed.

また、上述の電磁継電器では接触ばね11に可撓性が要求されるため、接触ばね11は固定接点端子7,9に比べて厚みの薄い板材から形成されている。一方、可動接点端子13は強度上の問題などからある程度の厚みを持たせる必要があるため、図11(a)(b)に示すように垂下片12から延長形成された帯状の端子片13aを、幅方向における中心線L1で折り返し、幅方向の両側縁が重なるように重ね合わせることで、可動接点端子13を形成している。そして、可動接点端子13や固定接点端子7,9やコイル端子3aの表面(図13及び図14中に斜線で示す部位)に予備半田を施すことで、可動接点端子13の表面を覆うとともに、端子片13aの重ね合わせ部分の隙間を半田で塞ぐことにより、リークの発生を防止している。   Further, in the above-described electromagnetic relay, since the contact spring 11 is required to be flexible, the contact spring 11 is formed of a plate material that is thinner than the fixed contact terminals 7 and 9. On the other hand, since the movable contact terminal 13 needs to have a certain thickness due to a problem in strength or the like, a strip-shaped terminal piece 13a extended from the hanging piece 12 is provided as shown in FIGS. The movable contact terminal 13 is formed by folding back at the center line L1 in the width direction and overlapping the both side edges in the width direction. Then, by preliminarily soldering the surface of the movable contact terminal 13, the fixed contact terminals 7, 9 and the coil terminal 3a (part shown by hatching in FIGS. 13 and 14), the surface of the movable contact terminal 13 is covered, Leakage is prevented by closing the gap between the overlapping portions of the terminal pieces 13a with solder.

なお端子片13aは、図11(a)に示すように幅方向における中心線L1に対して略対称な形状に形成されており、略対称な形状に形成された側片13b,13cはそれぞれ細長の矩形板状であって、下端部の両角部を落としたような形状に形成され、両側片13b,13cの長手方向に沿う側縁同士を一体に連結してある。そして、図中左側の側片13bが垂下片12の下端に連続一体に連結されており、端子片13aを幅方向の中心線L1で折り返して、側片13bの上側に側片13cを重ね合わせることで、可動接点端子13を形成してある。
実開昭63−56546号公報
As shown in FIG. 11A, the terminal piece 13a is formed in a substantially symmetric shape with respect to the center line L1 in the width direction, and the side pieces 13b and 13c formed in the substantially symmetric shape are elongated. The side edges along the longitudinal direction of both side pieces 13b, 13c are integrally connected to each other. And the left side piece 13b in the figure is continuously and integrally connected to the lower end of the drooping piece 12, the terminal piece 13a is folded back at the center line L1 in the width direction, and the side piece 13c is superimposed on the upper side of the side piece 13b. Thus, the movable contact terminal 13 is formed.
Japanese Utility Model Publication No. 63-56546

ところで、近年、廃棄された電気機器が酸性雨に晒されると、電気機器に使用された半田から鉛が溶け出して、土壌汚染や地下水の汚染を引き起こす可能性が指摘されており、環境に対する配慮から従来の鉛入り半田に代えて所謂鉛フリー半田を使用した製品が提供されている。   By the way, in recent years, it has been pointed out that when waste electrical equipment is exposed to acid rain, lead may be dissolved from the solder used in the electrical equipment, causing soil contamination and groundwater contamination. Thus, products using so-called lead-free solder instead of conventional lead-containing solder are provided.

しかしながら、鉛フリー半田は従来の鉛入り半田に比べて濡れ性が悪いという問題があり、上述のような2つ折りの可動接点端子13に鉛フリー半田で予備半田を施した場合、鉛フリー半田が可動接点端子13の表面を覆うだけでとどまり、端子片13aを重ね合わせた部分の隙間まで入り込まないために、端子片13aを重ね合わせた部分の内側に空洞Xが発生していた(図11(c)参照)。   However, lead-free solder has a problem of poor wettability compared to conventional lead-containing solder, and when pre-soldering is performed on lead-free movable contact terminal 13 as described above with lead-free solder, In order to stay only by covering the surface of the movable contact terminal 13 and not enter the gap between the overlapped portions of the terminal pieces 13a, a cavity X was generated inside the overlapped portion of the terminal pieces 13a (FIG. 11 ( c)).

そして、この電磁継電器をプリント基板に実装する際には、可動接点端子13や外部端子片7c、9cやコイル端子3aをプリント基板の挿通孔に通し、挿通孔から裏面側に突出する可動接点端子13や固定接点端子7,9をクリンチ(45°曲げ)して、電磁継電器をプリント基板に仮固定した後、可動接点端子13や固定接点端子7,9を半田付けするのであるが、可動接点端子13をクリンチした際に折り曲げ位置(図12中のA部)で半田クラックBが発生し、端子片13aの重ね合わせ部に開きが発生して、端子片13aの折り曲げ部分の空洞Xを介してリークが発生するという問題があった。   And when mounting this electromagnetic relay on a printed circuit board, the movable contact terminal 13, the external terminal pieces 7c, 9c, and the coil terminal 3a are passed through the insertion hole of the printed circuit board, and the movable contact terminal protruding from the insertion hole to the back surface side. 13 and the fixed contact terminals 7 and 9 are clinched (bent at 45 °) and the electromagnetic relay is temporarily fixed to the printed circuit board, and then the movable contact terminal 13 and the fixed contact terminals 7 and 9 are soldered. When the terminal 13 is clinched, a solder crack B is generated at the bent position (A portion in FIG. 12), an opening is generated in the overlapping portion of the terminal piece 13a, and the cavity X is formed in the bent portion of the terminal piece 13a. There was a problem of leaks.

本発明は上記問題点に鑑みて為されたものであり、その目的とするところは、1枚の金属板を2つに折り重ねて形成した端子の折り重ねた部分からリークが発生するのを防止した端子構造を提供することにある。   The present invention has been made in view of the above problems, and its purpose is to prevent leakage from a folded portion of a terminal formed by folding a single metal plate into two. An object of the present invention is to provide a prevented terminal structure.

上記目的を達成するために、請求項1の発明では、電気回路を構成する電気部品が表面に配置されたベース、及び、電気部品を覆うようにしてベースの表面に被着されるカバーからなる器体と、1枚の金属板を中間部で折り返して重ね合わせることで形成され、ベースの表裏を連通する連通部に配置される電気回路の外部接続端子とを備え、ベースの裏面にシール剤を充実することによって器体を封止する電気機器の端子構造であって、外部接続端子における器体の内部側の端部に、重ね合わせた金属板の間の隙間にシール剤を流入させるためのシール剤流入口を設けるとともに、ベースの裏面からシール剤流入口に達するシール剤の導入経路を設け、シール剤流入口の近傍において金属板の重ね合わせた部分の一方に切欠を設け、シール剤の導入経路に臨むようにして金属部品が配置され、該金属部品の表面における導入経路と対向する部位に凹部を形成し、この凹部内に合成樹脂層を形成したことを特徴とする。 In order to achieve the above object, according to the first aspect of the present invention, there are provided a base on which electrical components constituting an electrical circuit are arranged, and a cover that is attached to the surface of the base so as to cover the electrical components. A container and an external connection terminal of an electric circuit which is formed by folding and overlapping one metal plate at an intermediate portion and arranged in a communication portion which communicates the front and back of the base, and has a sealing agent on the back surface of the base Is a terminal structure of an electrical device that seals the container body by enhancing the seal, and in order to allow the sealing agent to flow into the gap between the metal plates stacked on the inner end of the container body at the external connection terminal provided with a material inlet, the introduction path of sealant extending from the back surface of the base to the sealant inlet is provided, the notch provided on one superimposed portions of the metal plate in the vicinity of the sealant inlet sealant As to face the introduction path is arranged metal parts, the metal part forming a recess in a portion opposed to the introduction path in the surface of, and characterized by forming a synthetic resin layer in the recess.

この発明によれば、導入経路を経由して器体内部に進入したシール剤が、シール剤流入口から重ね合わせた金属板の間の隙間に進入するので、金属板の間にできる隙間をシール剤で塞ぐことができ、金属板の間にできる隙間からリークが発生するのを防止できる。さらに、重ね合わせた部分の一方には切欠を設けてあるので、シール剤流入口にシール剤が流入しやすくなり、金属板の間にできる隙間をシール剤で確実に塞ぐことができる。したがって、端子の表面に鉛フリー半田で予備半田を施した場合に、この端子を折り曲げることで、端子の表面を覆う半田にクラックが発生したとしても、重ね合わせた金属板の間にできる隙間がシール剤で塞がれているので、リークが発生することがない。   According to this invention, since the sealing agent that has entered the inside of the container via the introduction path enters the gap between the metal plates stacked from the sealing agent inlet, the gap formed between the metal plates is closed with the sealing agent. It is possible to prevent leakage from occurring through a gap formed between the metal plates. Furthermore, since one of the overlapped portions is provided with a notch, the sealing agent can easily flow into the sealing agent inflow port, and the gap formed between the metal plates can be reliably closed with the sealing agent. Therefore, when pre-soldering is performed on the surface of the terminal with lead-free solder, even if a crack occurs in the solder that covers the surface of the terminal by bending the terminal, a gap that is created between the stacked metal plates is a sealing agent. Because it is blocked by, there is no leakage.

また、シール剤の導入経路に臨むようにして金属部品が配置されている場合に、導入経路と対向する金属部品の部位にめっき層が形成されていると、めっき層がシール剤を弾くためにシール剤が流れ込みにくくなったり、シール剤の流入量にバラツキが発生するが、導入経路と対向する金属部品の部位に凹部を形成し、この凹部内に合成樹脂層を形成することにより、金属部品の表面でシール剤を弾いてしまうのを防止し、シール剤の流れ込みを安定させることができる。 Further , when the metal part is arranged so as to face the introduction path of the sealing agent, if the plating layer is formed on the part of the metal part facing the introduction path, the plating layer repels the sealing agent. However, it is difficult to flow in or the amount of inflow of the sealant varies. By forming a recess in the metal part facing the introduction path and forming a synthetic resin layer in the recess, the surface of the metal part This prevents the sealing agent from being repelled and stabilizes the flow of the sealing agent.

以上説明したように、本発明では、導入経路を経由して器体内部に進入したシール剤が、シール剤流入口から重ね合わせた金属板の間の隙間に進入するので、金属板の間にできる隙間をシール剤で塞ぐことができ、金属板の間にできる隙間からリークが発生するのを防止できる。さらに、重ね合わせた部分の一方には切欠を設けてあるので、シール剤流入口にシール剤が流入しやすくなり、金属板の間にできる隙間をシール剤で確実に塞ぐことができる。したがって、端子の表面に鉛フリー半田で予備半田を施した場合に、この端子を折り曲げることで、端子の表面を覆う半田にクラックが発生したとしても、重ね合わせた金属板の間にできる隙間がシール剤で塞がれているので、リークが発生することがない。   As described above, in the present invention, since the sealant that has entered the interior of the container via the introduction path enters the gap between the metal plates stacked from the sealant inlet, the gap formed between the metal plates is sealed. It can be blocked with an agent, and leakage can be prevented from occurring through a gap formed between the metal plates. Furthermore, since one of the overlapped portions is provided with a notch, the sealing agent can easily flow into the sealing agent inflow port, and the gap formed between the metal plates can be reliably closed with the sealing agent. Therefore, when pre-soldering is performed on the surface of the terminal with lead-free solder, even if a crack occurs in the solder that covers the surface of the terminal by bending the terminal, a gap is created between the stacked metal plates. Because it is blocked by, there is no leakage.

以下、本発明の端子構造を電磁継電器に適用した実施形態について図面を参照して説明する。但し、電気機器は電磁継電器に限定されるものではなく、電磁継電器以外の電気機器にも本発明の技術思想が適用可能であることは言うまでもない。   Hereinafter, an embodiment in which a terminal structure of the present invention is applied to an electromagnetic relay will be described with reference to the drawings. However, the electric device is not limited to the electromagnetic relay, and it is needless to say that the technical idea of the present invention can be applied to electric devices other than the electromagnetic relay.

参考例1)
参考例について図面に基づいて説明する。本参考例の電磁継電器は、従来技術で説明した電磁継電器と同様の構成を有しているので、共通する構成要素には同一の符号を付して、図示及び説明は省略し、本参考例の特徴部分についてのみ詳細に説明する。
( Reference Example 1)
Reference Example 1 will be described with reference to the drawings. Since the electromagnetic relay of this reference example has the same configuration as that of the electromagnetic relay described in the prior art, common constituent elements are denoted by the same reference numerals, illustration and description are omitted, and this reference example is omitted. Only the characteristic part will be described in detail.

図1(a)(b)は本参考例の端子構造を適用した接触ばね11を示し、この接触ばね11は、垂下片12の下端から延長形成された可動接点端子13と、垂下片12の上端両側より上方に一体延長した後、その上端から斜め下方に延長した屈曲片14,14と、各屈曲片14,14の先端に一体連設し、板面が垂下片12の板面に略直交するように形成された固定片15と、固定片15の先端両側より延長形成されたY形片16とを有している。そして、ベース1にインサート成形された継鉄2の縦片2aに接触ばね11をかしめ固定すると、ベース1の側面に設けたベース1の表裏を連通する連通部としての凹溝1aに可動接点端子13が配置される。 FIGS. 1A and 1B show a contact spring 11 to which the terminal structure of this reference example is applied. The contact spring 11 includes a movable contact terminal 13 extended from the lower end of the hanging piece 12, and a hanging piece 12. After integrally extending upward from both sides of the upper end, the bent pieces 14 and 14 extending obliquely downward from the upper end thereof are integrally connected to the ends of the bent pieces 14 and 14, and the plate surface is substantially parallel to the plate surface of the hanging piece 12. A fixing piece 15 formed so as to be orthogonal to each other and a Y-shaped piece 16 extended from both ends of the tip of the fixing piece 15 are provided. When the contact spring 11 is caulked and fixed to the vertical piece 2a of the yoke 2 insert-molded in the base 1, the movable contact terminal is inserted into the concave groove 1a serving as a communicating portion that communicates the front and back of the base 1 provided on the side surface of the base 1. 13 is arranged.

可動接点端子13は、垂下片12から延長形成された帯状の端子片13aを、幅方向における中心線で折り返し、幅方向の両側縁が重なるように重ね合わせることによって形成されており、その表面には鉛フリー半田で予備半田が施される。   The movable contact terminal 13 is formed by folding a belt-like terminal piece 13a extended from the drooping piece 12 at the center line in the width direction so that both side edges in the width direction overlap each other. Is pre-soldered with lead-free solder.

端子片13aは、図1(a)に示すように幅方向における中心線に対して略対称な形状に形成されており、略対称な形状に形成された側片13b,13cはそれぞれ細長の矩形板状であって、下端部の両角部を落としたような形状に形成され、両側片13b,13cの長手方向に沿う側縁同士を一体に連結してある。そして、図中左側の側片13bが垂下片12の下端に連続一体に連結されており、この側片13bの垂下片12側の端部における側片13c側の部位には切欠21を形成してある。而して、端子片13aを幅方向の中心線で折り返して、側片13bの上側に側片13cを重ね合わせると、切欠21を形成した部位以外では2枚の側片13b,13cが重なっているが、切欠21を形成した部位では1枚の側片13cのみとなり、この部分がシール剤流入口22となる。   As shown in FIG. 1A, the terminal piece 13a is formed in a substantially symmetric shape with respect to the center line in the width direction, and the side pieces 13b and 13c formed in the substantially symmetric shape are each an elongated rectangular shape. It is plate-shaped and formed in a shape in which both corners of the lower end are dropped, and side edges along the longitudinal direction of both side pieces 13b, 13c are integrally connected. The left side piece 13b in the drawing is connected continuously and integrally to the lower end of the drooping piece 12, and a notch 21 is formed at a portion of the side piece 13b on the side piece 13c side at the end of the drooping piece 12 side. It is. Thus, when the terminal piece 13a is folded back at the center line in the width direction and the side piece 13c is superimposed on the upper side of the side piece 13b, the two side pieces 13b and 13c are overlapped except at the portion where the notch 21 is formed. However, only one side piece 13 c is formed at the portion where the notch 21 is formed, and this portion serves as the sealant inlet 22.

このように、2枚重ねの側片13b,13cの一部を切り欠いて、側片13cが1枚のみの部分を形成しており、側片13b,13cが2枚重なっている部分に比べて、側片13cが1枚のみの部分では側片13b,13cの間の隙間にシール剤20が流れ込みやすく、側片13b,13cの間の隙間をシール剤20で確実に塞ぐことができる。また、シール剤流入口22は、可動接点端子13における器体の内部側の端部に設けられているので、可動接点端子13の根元側の隙間をシール剤20で塞ぐことができ、リーク経路を確実に遮断することができる。   In this way, a part of the two overlapping side pieces 13b and 13c is cut out, and the side piece 13c forms only one part, compared with the part where the two side pieces 13b and 13c overlap. Thus, when only one side piece 13c is provided, the sealing agent 20 easily flows into the gap between the side pieces 13b and 13c, and the gap between the side pieces 13b and 13c can be reliably closed with the sealing agent 20. Further, since the sealing agent inlet 22 is provided at the end of the movable contact terminal 13 on the inner side of the container, the gap on the root side of the movable contact terminal 13 can be closed with the sealing agent 20, and the leakage path Can be reliably shut off.

また、可動接点端子13はベース1の凹溝1a内に配置され、ベース1から突出する継鉄2の縦片2aに対向しており、可動接点端子13と凹溝1aとの間の隙間と、可動接点端子13と継鉄2の縦片2aとの間の隙間とから、ベース1の裏面よりシール剤流入口22に達するシール剤20の導入経路23が構成される。   The movable contact terminal 13 is disposed in the concave groove 1a of the base 1 and faces the vertical piece 2a of the yoke 2 protruding from the base 1, and the gap between the movable contact terminal 13 and the concave groove 1a is The introduction path 23 of the sealing agent 20 that reaches the sealing agent inlet 22 from the back surface of the base 1 is constituted by the gap between the movable contact terminal 13 and the vertical piece 2 a of the yoke 2.

而して、ベース1の表面に電気部品を取り付け、電気部品を覆うようにしてベース1の表面にカバー19を被せた後に、ベース1の底面にシール剤20を充実して、ベース1及びカバー19からなる器体を封止すると、シール剤20でベース1の底面が封止されるととともに、シール剤20が上記導入経路23を通ってシール剤流入口22まで導かれ、シール剤流入口22から端子片13aの側片13b,13cの間の隙間に流入するので、この隙間をシール剤20で確実に塞ぐことができる。したがって、この電磁継電器をプリント基板に実装する際に、プリント基板の孔に可動接点端子13や外部端子片7c,9cやコイル端子3aを通して、可動接点端子13の先端部をクリンチ(45°曲げ)した場合に、可動接点端子13の表面を覆う予備半田に半田クラックが発生したとしても、側片13b,13cの間の隙間と上記導入経路23とがシール剤20で塞がれているので、リークが発生するのを防止することができる。   Thus, after mounting electrical parts on the surface of the base 1 and covering the surface of the base 1 with the cover 19 so as to cover the electrical parts, the bottom surface of the base 1 is filled with the sealing agent 20, and the base 1 and the cover are covered. When the container 19 is sealed, the bottom surface of the base 1 is sealed with the sealing agent 20, and the sealing agent 20 is guided to the sealing agent inlet 22 through the introduction path 23. 22 flows into the gap between the side pieces 13b and 13c of the terminal piece 13a, so that the gap can be reliably closed with the sealant 20. Therefore, when this electromagnetic relay is mounted on a printed circuit board, the tip of the movable contact terminal 13 is clinched (45 ° bent) through the movable contact terminal 13, the external terminal pieces 7c and 9c and the coil terminal 3a through the hole of the printed circuit board. In this case, even if a solder crack occurs in the preliminary solder covering the surface of the movable contact terminal 13, the gap between the side pieces 13b and 13c and the introduction path 23 are blocked by the sealing agent 20. Leakage can be prevented from occurring.

参考例2)
参考例について図2及び図3に基づいて説明する。尚、基本的な構成は参考例1と同様であるので、共通する構成要素には同一の符号を付して、その説明は省略する。
( Reference Example 2)
Reference Example 2 will be described with reference to FIGS. Since the basic configuration is the same as that of the reference example 1, common constituent elements are denoted by the same reference numerals and description thereof is omitted.

上述の参考例1では、可動接点端子13とベース1にインサート成形された継鉄2の縦片2aとが対向しており、シール剤20の導入経路23の一部が、可動接点端子13と継鉄2の縦片2aとの間の隙間で構成されている。 In the reference example 1 described above, the movable contact terminal 13 and the vertical piece 2a of the yoke 2 insert-molded on the base 1 are opposed to each other, and a part of the introduction path 23 of the sealing agent 20 is connected to the movable contact terminal 13. It is comprised by the clearance gap between the vertical pieces 2a of the yoke 2. As shown in FIG.

ここで、金属部品である継鉄2の表面にめっき処理などが施されていると、継鉄2の表面でシール剤20を弾くために、シール剤20が導入経路23を伝って器体内部に入り込みにくくなったり、シール剤20の流れ性などの影響で流れ込み量がばらつく可能性がある。   Here, when the surface of the yoke 2 which is a metal part is subjected to a plating process or the like, the sealing agent 20 travels through the introduction path 23 to repel the sealing agent 20 on the surface of the yoke 2. There is a possibility that the amount of inflow may vary due to the difficulty of entering or the influence of the flowability of the sealing agent 20.

そこで、本参考例では継鉄2の縦片2aにおける可動接点端子13との対向部24(図2中の斜線部)にローレット加工を施して、この対向部24の表面に凹凸を形成しているので、対向部24の表面でシール剤20を弾いたり、シール剤の流れ込み量がばらついたりするのを防止できる。したがって、シール剤20で器体を封止する際に、ベース1の底面から導入経路23を伝ってシール剤流入口22までシール剤20を確実に流すことができ、シール剤流入口22から側片13b,13cの間の隙間にシール剤20を流して、この隙間を確実に塞ぐことができる。 Therefore, in this reference example , a knurling process is performed on the facing portion 24 (shaded portion in FIG. 2) of the longitudinal piece 2a of the yoke 2 with respect to the movable contact terminal 13 to form irregularities on the surface of the facing portion 24. Therefore, it is possible to prevent the sealing agent 20 from being repelled on the surface of the facing portion 24 and the amount of the sealing agent flowing in can vary. Therefore, when sealing the container with the sealing agent 20, the sealing agent 20 can be reliably flowed from the bottom surface of the base 1 through the introduction path 23 to the sealing agent inlet 22, and the side from the sealing agent inlet 22. The sealing agent 20 can be poured into the gap between the pieces 13b and 13c to reliably close the gap.

(実施形態
本発明の実施形態を図4〜図10に基づいて説明する。尚、基本的な構成は参考例1と同様であるので、共通する構成要素には同一の符号を付して、その説明は省略する。
(Embodiment 1 )
The first embodiment of the present invention will be described with reference to FIGS. 4-10. Since the basic configuration is the same as that of the reference example 1, common constituent elements are denoted by the same reference numerals and description thereof is omitted.

上述の参考例1では、可動接点端子13とベース1にインサート成形された継鉄2の縦片2aとが対向しており、シール剤20の導入経路23の一部が、可動接点端子13と継鉄2の縦片2aとの間の隙間で構成されている。 In the reference example 1 described above, the movable contact terminal 13 and the vertical piece 2a of the yoke 2 insert-molded on the base 1 are opposed to each other, and a part of the introduction path 23 of the sealing agent 20 is connected to the movable contact terminal 13. It is comprised by the clearance gap between the vertical pieces 2a of the yoke 2. As shown in FIG.

ここで、金属部品である継鉄2の表面にめっき処理などが施されていると、継鉄2の表面でシール剤20を弾くため、シール剤20が導入経路23を伝って器体内部に入り込みにくくなったり、シール剤20の流れ性などの影響で流れ込み量がばらつく可能性がある。   Here, when the surface of the yoke 2 that is a metal part is subjected to plating or the like, the sealing agent 20 is repelled on the surface of the yoke 2, so that the sealing agent 20 passes through the introduction path 23 and enters the inside of the container body. There is a possibility that the amount of inflow may vary due to the difficulty of entering or the influence of the flowability of the sealing agent 20.

ところで、継鉄2は、図4〜図6に示すように磁性材料からL字形に形成されており、縦片2aの外側面には接触ばね11をかしめ固定するための一対のダボ2c,2cが突設され、横片2bには鉄心5の先端部をかしめ固定する孔2dが貫設されている。   Incidentally, the yoke 2 is formed in an L shape from a magnetic material as shown in FIGS. 4 to 6, and a pair of dowels 2c, 2c for caulking and fixing the contact spring 11 to the outer surface of the vertical piece 2a. And a hole 2d for caulking and fixing the tip of the iron core 5 is provided in the horizontal piece 2b.

そして、本実施形態では、図4(a)(d)及び図8(a)に示すように、継鉄2の縦片2aにおける可動接点端子13との対向部位に、凹溝25を形成してあり、この継鉄2をベース1とともにインサート成形してベースブロック27を形成する際に、縦片2aの凹溝25内に合成樹脂層26を形成してある(図7(a)〜(d)、図8(b)及び図9参照)。   And in this embodiment, as shown to Fig.4 (a) (d) and Fig.8 (a), the concave groove 25 is formed in the site | part facing the movable contact terminal 13 in the vertical piece 2a of the yoke 2. As shown in FIG. When the yoke 2 is insert-molded together with the base 1 to form the base block 27, a synthetic resin layer 26 is formed in the concave groove 25 of the vertical piece 2a (FIGS. 7 (a) to ( d), see FIG. 8B and FIG.

このように本実施形態では可動接点端子13と対向する継鉄2の縦片2aの部位に凹溝25を形成し、この凹溝25に合成樹脂層26を形成しているので、図10に示すように凹溝25内の合成樹脂層26が可動接点端子13と対向することになり、可動接点端子13と金属部品である継鉄2とが直接対向している場合のように、継鉄2の表面でシール剤20を弾いたり、シール剤の流れ込み量がばらついたりするのを防止でき、シール剤20を流れ込み易くしている。したがって、シール剤20で器体を封止する際に、ベース1の底面から導入経路23を伝ってシール剤流入口22までシール剤20を確実に流すことができ、シール剤流入口22から側片13b,13cの間の隙間にシール剤20を流して、この隙間を確実に塞ぐことができる。   Thus, in this embodiment, since the concave groove 25 is formed in the portion of the vertical piece 2a of the yoke 2 facing the movable contact terminal 13, and the synthetic resin layer 26 is formed in the concave groove 25, FIG. As shown, the synthetic resin layer 26 in the concave groove 25 is opposed to the movable contact terminal 13, and the movable contact terminal 13 and the yoke 2, which is a metal part, are directly opposed to each other. It is possible to prevent the sealing agent 20 from being repelled on the surface of 2 and the amount of the sealing agent flowing in, and to make the sealing agent 20 flow easily. Therefore, when sealing the container with the sealing agent 20, the sealing agent 20 can be reliably flowed from the bottom surface of the base 1 through the introduction path 23 to the sealing agent inlet 22, and the side from the sealing agent inlet 22. The sealing agent 20 can be poured into the gap between the pieces 13b and 13c to reliably close the gap.

参考例1を示し、(a)は可動接点端子を折り曲げる前の接触ばねの正面図、(b)は可動接点端子を折り曲げた状態の接触ばねの正面図、(c)は電磁継電器の要部拡大断面図である。 Reference Example 1 is shown, (a) is a front view of a contact spring before the movable contact terminal is bent, (b) is a front view of the contact spring in a state where the movable contact terminal is bent, and (c) is a main part of the electromagnetic relay. It is an expanded sectional view. 参考例2を示し、ベースブロックの要部拡大図である。FIG. 9 is a main part enlarged view of a base block, showing Reference Example 2. 同上の電磁継電器の要部拡大断面図である。It is a principal part expanded sectional view of an electromagnetic relay same as the above. 実施形態の電磁継電器に用いる継鉄を示し、(a)は正面図、(b)はC−C断面図、(c)は背面図、(d)はD−D断面図である。The yoke used for the electromagnetic relay of Embodiment 1 is shown, (a) is a front view, (b) is a CC cross-sectional view, (c) is a rear view, and (d) is a DD cross-sectional view. 同上の継鉄の上面図である。It is a top view of a yoke same as the above. 同上の継鉄の下面図である。It is a bottom view of a yoke same as the above. 同上のベースブロックを示し、(a)は正面図、(b)は側面図、(c)は背面図、(d)は上面図である。The base block same as the above is shown, (a) is a front view, (b) is a side view, (c) is a rear view, and (d) is a top view. 同上を示し、(a)は継鉄の正面図、(b)はベースブロックの正面図である。The same as the above, (a) is a front view of the yoke, (b) is a front view of the base block. 同上のベースブロックの要部拡大図である。It is a principal part enlarged view of a base block same as the above. 同上の電磁継電器の要部拡大断面図である。It is a principal part expanded sectional view of an electromagnetic relay same as the above. 従来の可動接点端子を示し、(a)は可動接点端子を折り曲げる前の接触ばねの正面図、(b)は可動接点端子を折り曲げた状態の接触ばねの正面図、(c)は可動接点端子の断面図である。A conventional movable contact terminal is shown, (a) is a front view of a contact spring before the movable contact terminal is bent, (b) is a front view of the contact spring in a state where the movable contact terminal is bent, and (c) is a movable contact terminal. FIG. 同上の可動接点端子の折り曲げ部分の要部拡大図である。It is a principal part enlarged view of the bending part of a movable contact terminal same as the above. 従来の電磁継電器を示し、(a)は正面から見た断面図、(b)は右側から見た断面図である。The conventional electromagnetic relay is shown, (a) is sectional drawing seen from the front, (b) is sectional drawing seen from the right side. 同上の電磁継電器のカバーを外した状態を示し、(a)は正面図、(b)は上面図である。The state which removed the cover of the electromagnetic relay same as the above is shown, (a) is a front view, (b) is a top view.

符号の説明Explanation of symbols

1 ベース
1a 凹溝
2 継鉄
2a 縦片
13 可動接点端子
13a 端子片
13b 側片
13c 側片
20 シール剤
21 切欠
22 シール剤流入口
23 導入経路
DESCRIPTION OF SYMBOLS 1 Base 1a Groove | groove 2 Relay 2a Vertical piece 13 Movable contact terminal 13a Terminal piece 13b Side piece 13c Side piece 20 Sealing agent 21 Notch 22 Sealing agent inflow port 23 Introduction path

Claims (1)

電気回路を構成する電気部品が表面に配置されたベース、及び、前記電気部品を覆うようにして前記ベースの表面に被着されるカバーからなる器体と、1枚の金属板を中間部で折り返して重ね合わせることで形成され、前記ベースの表裏を連通する連通部に配置される前記電気回路の外部接続端子とを備え、前記ベースの裏面にシール剤を充実することによって前記器体を封止する電気機器の端子構造であって、前記外部接続端子における前記器体の内部側の端部に、重ね合わせた金属板の間の隙間にシール剤を流入させるためのシール剤流入口を設けるとともに、前記ベースの裏面から前記シール剤流入口に達するシール剤の導入経路を設け、前記シール剤流入口の近傍において前記金属板の重ね合わせた部分の一方に切欠を設け、前記シール剤の導入経路に臨むようにして金属部品が配置され、該金属部品の表面における前記導入経路と対向する部位に凹部を形成し、この凹部内に合成樹脂層を形成したことを特徴とする端子構造 An electric part comprising an electric part constituting an electric circuit on the surface, a container body comprising a cover that covers the electric part so as to cover the electric part, and one metal plate at an intermediate part And an external connection terminal of the electric circuit that is formed by folding and overlapping and is disposed in a communication portion that communicates the front and back of the base, and the container is sealed by enriching the back surface of the base with a sealing agent. In the terminal structure of the electrical device to be stopped, at the end of the external connection terminal on the inner side of the vessel body, a sealing agent inlet for allowing the sealing agent to flow into the gap between the overlapped metal plates is provided, wherein the introduction path of the sealing agent from the back of the base reaches the sealant inlet is provided, a notch is provided in the vicinity of the sealant inlet at one portion of superposition of the metal plate, the sheet Metal parts are arranged so as to face the introduction path Le agent, the metal component to form a concave portion facing the introduction path in the surface of, and characterized by forming a synthetic resin layer within this recess terminal Structure .
JP2003281245A 2003-07-28 2003-07-28 Terminal structure Expired - Lifetime JP4111092B2 (en)

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JP4712509B2 (en) * 2005-10-11 2011-06-29 古河電気工業株式会社 Relay fixing structure
JP5741338B2 (en) * 2011-09-15 2015-07-01 オムロン株式会社 Terminal member seal structure and electromagnetic relay
JP2013218886A (en) * 2012-04-09 2013-10-24 Omron Corp Seal structure for electronic apparatus
JP7154151B2 (en) 2019-02-15 2022-10-17 富士通コンポーネント株式会社 Electromagnetic relay terminals and electromagnetic relays
JP7452212B2 (en) * 2020-04-13 2024-03-19 オムロン株式会社 Electromagnetic relays and electronic circuits
JP2021190236A (en) * 2020-05-27 2021-12-13 オムロン株式会社 Electromagnetic relay

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