JP4379281B2

JP4379281B2 - Electromagnetic relay

Info

Publication number: JP4379281B2
Application number: JP2004274443A
Authority: JP
Inventors: 謹斎町田; 日出央足立
Original assignee: Fuji Electric FA Components and Systems Co Ltd
Current assignee: Fuji Electric FA Components and Systems Co Ltd
Priority date: 2004-06-15
Filing date: 2004-09-22
Publication date: 2009-12-09
Anticipated expiration: 2024-09-22
Also published as: JP2006032309A

Description

本発明は、主としてプリント板に搭載して使用する電磁継電器の組立構造に関する。 The present invention relates to an assembly structure of an electromagnetic relay mainly used by being mounted on a printed board.

頭記の電磁継電器として、固定接触子およびバネ復帰形の可動接触子を組み付けた絶縁基板の上に操作用電磁石を載置支持するとともに、該電磁石のアーマチュアと可動接触子との間を絶縁物製の作動片で連繋し、外部信号に基づき電磁石を励磁，消磁して接点を開閉制御するようにした構成のものが知られている（例えば、特許文献１参照）。
次に、特許文献１に開示されている電磁継電器の組立構造を図４，図５に示す。各図において、１は固定接触子２，バネ復帰形の可動接触子３を組み付けた絶縁基板、４は、鉄心６にコイルボビン５を介して電磁コイル７を巻装した操作用電磁石の固定子鉄心、８はアーマチュア（可動鉄心）、９はアーマチュア８に結合して可動接触子３を操作する絶縁物製の作動片、１０はケースカバーである。
ここで、前記の可動接触子３は板バネの接触子片に接点を設けたもので、固定接触子２と接点を向かい合わせに対峙させて絶縁基板１に装着し、その端子リード２ａ，３ａを絶縁基板１の裏面側に引き出している。 As an electromagnetic relay described above, an operation electromagnet is placed and supported on an insulating substrate on which a fixed contact and a spring return movable contact are assembled, and an insulator is provided between the armature of the electromagnet and the movable contact. There is known a configuration in which the contact points are controlled to be opened and closed by being linked by a manufactured working piece and exciting and demagnetizing an electromagnet based on an external signal (for example, see Patent Document 1).
Next, the assembly structure of the electromagnetic relay disclosed in Patent Document 1 is shown in FIGS. In each figure, reference numeral 1 denotes a fixed contact 2, an insulating substrate on which a spring return movable contact 3 is assembled, and 4 denotes an operation electromagnet stator core in which an electromagnetic coil 7 is wound around an iron core 6 via a coil bobbin 5. , 8 is an armature (movable iron core), 9 is an operating piece made of an insulator that is coupled to the armature 8 and operates the movable contact 3, and 10 is a case cover.
Here, the movable contact 3 is provided with a contact point on a contact piece of a leaf spring. The fixed contact 2 and the contact point are opposed to each other and mounted on the insulating substrate 1, and the terminal leads 2a and 3a thereof are mounted. Is pulled out to the back side of the insulating substrate 1.

また、固定子４の鉄心６は、門形（コ字形）の磁性板の両端から下向きに延在する脚を接極部６ａ，６ｂとし、その下端の突起部６ｃを絶縁基板１に形成した受溝に圧入して定位置に載置支持するようにしている。また、電磁コイル７に接続した端子リード７ａ，７ｂをコイルボビン５から下方に延在し、絶縁基板１に穿孔したリード穴１ｃを通してその底面側に引き出している。
一方、アーマチュア８は前記鉄心６と上下逆向きの門形磁性板で、その両端から上向きに延在する脚部を固定子鉄心６の接極部６ａ，６ｂの側方に対峙させている。また、アーマチュア８は磁性板の一端（右端側）から下方に突き出した突起部８ａをヒンジ軸として絶縁基板１に形成したヒンジ軸穴１ａに嵌入して回動支点とし、他端側（左側端）から下方に突き出した突起部８ｂを絶縁基板１に形成した受溝１ｂに遊嵌してアーマチュアの回動範囲を規制するようにしている。さらに、アーマチュア８の胴部には絶縁物製の作動片９を結合し、該作動片９の端面を絶縁基板１に組み付けた可動接触子３の板バネ接触子片に当接させている。 In addition, the iron core 6 of the stator 4 is formed by forming legs 6a and 6b as legs extending downward from both ends of a gate-shaped (U-shaped) magnetic plate and forming a projection 6c at the lower end thereof on the insulating substrate 1. It press-fits into the receiving groove and is placed and supported at a fixed position. Terminal leads 7 a and 7 b connected to the electromagnetic coil 7 extend downward from the coil bobbin 5 and are drawn out to the bottom side through lead holes 1 c drilled in the insulating substrate 1.
On the other hand, the armature 8 is a gate-shaped magnetic plate that is upside down with respect to the iron core 6, and leg portions extending upward from both ends thereof are opposed to the side of the contact portions 6 a and 6 b of the stator core 6. The armature 8 is fitted into a hinge shaft hole 1a formed in the insulating substrate 1 with a protrusion 8a protruding downward from one end (right end side) of the magnetic plate as a hinge shaft, and is used as a rotation fulcrum. The protruding portion 8b protruding downward is loosely fitted in the receiving groove 1b formed in the insulating substrate 1 to restrict the rotation range of the armature. Further, an operating piece 9 made of an insulator is coupled to the body portion of the armature 8, and the end surface of the operating piece 9 is brought into contact with the leaf spring contact piece of the movable contact 3 assembled to the insulating substrate 1.

上記の構成で、常時（電磁コイル７が消磁）は可動接触子３がバネ復帰して接点が開極位置に後退している。また、作動片９を介して可動接触子３に当接している操作用電磁石のアーマチュア８は可動接触子の板バネに押され、アーマチュアの非ヒンジ側端が固定子鉄心６の接極部６ａから離間している。
この状態から外部信号を与えて電磁コイル７を励磁すると、その電磁力でアーマチュア８が固定子鉄心６の接極部６ａ，６ｂに吸着され、これによりヒンジ軸８ａを支点に回動したアーマチュア８が作動片９を介して可動接触子３の板バネ接触子片を撓ませるように押し込み、接点が閉成してＯＮとなる。なお、電磁コイル７を消磁してアーマチュア８の吸着を解除すると、可動接触子３は板バネ接触子片が弾性復帰して固定接触子２から開極し、同時に作動片９を介してアーマチュア８を待機位置に押し戻す。
特開平１−３０２６３１号公報 With the above configuration, at any time (the electromagnetic coil 7 is demagnetized), the movable contact 3 returns to the spring and the contact is retracted to the open position. Further, the armature 8 of the operating electromagnet that is in contact with the movable contact 3 via the operating piece 9 is pushed by the leaf spring of the movable contact, and the non-hinge side end of the armature is the armature portion 6a of the stator core 6. It is away from.
When the electromagnetic coil 7 is excited by applying an external signal from this state, the armature 8 is attracted to the armature portions 6a and 6b of the stator core 6 by the electromagnetic force, and thereby the armature 8 is rotated about the hinge shaft 8a. Is pushed so as to bend the leaf spring contact piece of the movable contact 3 via the operating piece 9, and the contact is closed and turned ON. When the electromagnetic coil 7 is demagnetized and the armature 8 is released from being attracted, the movable contact 3 is elastically restored from the leaf spring contact piece and is opened from the fixed contact 2. Return to the standby position.
Japanese Patent Laid-Open No. 1-302631

ところで、前記した従来構造の電磁継電器には、次記のように絶縁性確保，操作性に課題が残る。
すなわち、使用電圧の高い回路に適用する電磁継電器では、安全性確保の面から定格使用電圧以上の高い絶縁耐力が要求される一方で、プリント板に搭載する電磁継電器の占有スペースをできるだけ小さくするためにも小形，コンパクト化が要求される。これに対して、先述した従来技術の組立構造では、操作用電磁石のアーマチュア８が固定子鉄心６の側方に配置され、かつその逆門形磁性板が絶縁基板１の上面近くまで延在し、この位置でアーマチュアの側面に取付けた絶縁物製の作動片９を介して可動接触子２の背面に対峙させている。このために、アーマチュア８と接点部との間の絶縁距離が小さくなり、定格使用電圧の高い電磁継電器に対して要求される絶縁電圧を確保することが困難となる。 By the way, the above-described electromagnetic relay having the conventional structure still has problems in ensuring insulation and operability as described below.
In other words, electromagnetic relays applied to circuits with high operating voltages require high dielectric strength that is higher than the rated operating voltage from the viewpoint of ensuring safety, while minimizing the space occupied by electromagnetic relays mounted on printed boards. In addition, small size and downsizing are required. On the other hand, in the assembly structure of the prior art described above, the armature 8 of the operation electromagnet is disposed on the side of the stator core 6 and the inverted portal magnetic plate extends to the vicinity of the upper surface of the insulating substrate 1. At this position, the movable contact 2 is opposed to the back surface of the movable contact 2 via an insulating working piece 9 attached to the side surface of the armature. For this reason, the insulation distance between the armature 8 and the contact portion is reduced, and it is difficult to ensure the insulation voltage required for the electromagnetic relay having a high rated operating voltage.

また、従来の組立構造では、操作用電磁石のアーマチュアが電磁コイルとの干渉を避けるように、コ字形磁性板の固定子鉄心６およびアーマチュア８を逆向きに組み合わせて電磁石の磁路を形成していることから、その磁路長が長くなって磁気抵抗が増加し、このために磁気操作力が低下して動作特性にも影響を及ぼす。
本発明は上記の点に鑑みなされたものであり、その目的は絶縁性向上と併せて、小形，コンパクト化、並びに操作力の増強化が図れるように改良した電磁継電器の組立構造を提供することを目的とする。 Further, in the conventional assembly structure, the stator core 6 and the armature 8 of the U-shaped magnetic plate are combined in the opposite direction so that the armature of the electromagnet for operation avoids interference with the electromagnetic coil to form the magnetic path of the electromagnet. As a result, the magnetic path length is increased and the magnetic resistance is increased, so that the magnetic operating force is reduced and the operating characteristics are affected.
The present invention has been made in view of the above points, and an object thereof is to provide an improved assembly structure of an electromagnetic relay that can be reduced in size and size and enhanced in operating force, in addition to improved insulation. With the goal.

上記目的を達成するために、本発明によれば、両端を接極部とする鉄心の胴部にコイルボビンを介して電磁コイルを巻装した固定子と、前記鉄心の接極部に対峙して配置した支点形のアーマチュアと、固定接触子およびバネ復帰形の可動接触子を組み付け、かつその上に前記固定子を載置支持する絶縁基板と、アーマチュアの吸着動作に連動して可動接触子を駆動する絶縁物製の作動片と、ケースカバーとの組立体からなる電磁継電器において、前記アーマチュアを短冊形の磁性板として固定子鉄心に対し絶縁基板と反対側の上方に配置した上で、固定子鉄心の両端接極部にはアーマチュアの板面と対向する平坦な接極面を形成し、作動片は、その上半部に二股状の支持脚を形成してアーマチュアの他端に掛止連結した上で、下部先端を絶縁基板上に配した可動接触子の板バネ接触子片の上に載せ、前記アーマチュアに前記コイルボビンの端部上面に形成した２本のヒンジアームが嵌合する凹部と前記作動片の上半部に形成した二股状の支持脚が嵌合する凹部を設けるとともに、前記二つの凹部をアーマチュアの長手方向に対して対称となる位置に形成する（請求項１）。
In order to achieve the above-described object, according to the present invention, a stator in which an electromagnetic coil is wound around a core portion of an iron core having both ends as armature portions via a coil bobbin, and the armature portion of the iron core are opposed to each other. Assembling the fulcrum-shaped armature, the fixed contact and the spring return-type movable contact, and mounting the support on the stator, and the movable contact in conjunction with the armature's adsorption operation In an electromagnetic relay consisting of an assembly of actuating insulators to be driven and a case cover, the armature is disposed as a strip-shaped magnetic plate above the stator iron core on the opposite side of the insulating substrate, and then fixed. A flat armature surface opposite to the armature plate surface is formed at both end armature portions of the core, and the operating piece is formed at the other half of the armature by forming a bifurcated support leg on the upper half. Connect and insulate lower tip Mounted on the leaf spring contact piece of the movable contact arranged on the plate, and fitted into the recess and the upper half of the operating piece where the armature is fitted with two hinge arms formed on the upper surface of the end of the coil bobbin. A recess is formed in which the formed bifurcated support leg is fitted, and the two recesses are formed at positions symmetrical with respect to the longitudinal direction of the armature .

上記組立構造においては、操作用電磁石のアーマチュア（短冊状の磁性板）が、固定子鉄心を挟んで接点部を組み付けた箱型の絶縁基板と反対の上部側に配置されており、この位置でアーマチュアと絶縁基板に配した可動接触子との間を絶縁物の作動片を介して連繋するようにしており、これにより継電器を小形，薄形化しつつ電磁石組立体と絶縁基板上の接点部との間に十分な絶縁距離を確保して安全面の信頼性向上が図れる。
また、電磁石の磁路長についても、従来構造と比べて大幅に磁路を短縮することができ、これにより操作力の増強とともに動作時間を短縮して動作特性の改善が図れる。
更に、アーマチュアにコイルボビンの端部上面に形成した２本のヒンジアームが嵌合する凹部と作動片の上半部に形成した二股状の支持脚が嵌合する凹部を設けるとともに、前記二つの凹部をアーマチュアの長手方向に対して対称となる位置に形成するようにすれば、アーマチュアの上下左右の向きを気にすることなくアーマチュアを固定子鉄心に組み込むことができるので、電磁継電器の組立が容易となる。 In the assembly structure described above, the armature of the electromagnet for operation (strip-shaped magnetic plate) is arranged on the upper side opposite to the box-shaped insulating substrate in which the contact portion is assembled with the stator core interposed therebetween. The armature and the movable contact arranged on the insulating substrate are connected to each other via an insulating working piece, thereby reducing the size and thickness of the relay, and the contact point on the insulating substrate. A sufficient insulation distance can be ensured during this period to improve safety reliability.
In addition, the magnetic path length of the electromagnet can be significantly shortened compared to the conventional structure, thereby improving the operating characteristics by increasing the operating force and shortening the operating time.
Furthermore, the armature is provided with a recess for fitting two hinge arms formed on the upper surface of the end of the coil bobbin and a recess for fitting a bifurcated support leg formed on the upper half of the operating piece, and the two recesses. If the armature is formed at a position that is symmetrical with respect to the longitudinal direction of the armature, the armature can be incorporated into the stator core without worrying about the vertical and horizontal orientation of the armature, making it easy to assemble the electromagnetic relay. It becomes.

以下、本発明の実施の形態を図１〜図３に示す実施例に基づいて説明する。なお、図１はカバーを除いた組立状態の外観斜視図、図２は分解斜視図、図３は固定子鉄心，コイルボビン，およびコイル端子リードの分解斜視図であり、図４に対応する部材には同じ符号を付している。
図示実施例の組立構造において、操作用電磁石のアーマチュア８は短冊状の磁性板からなり、固定子４に対して絶縁基板１と反対側の上方位置に配置した上で、コイルボビン５の端部上面に立設したアーマチュア８の開離を防止する爪部を先端に有する２本のヒンジアーム５ａの間にヒンジ側端（右端）を嵌入して該ヒンジ側端を支点としてアーマチュア８を固定子鉄心４に対して回動可能に係止保持し、この位置で固定子鉄心６の両端接極部６ａ，６ｂに対峙させている。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the examples shown in FIGS. 1 is an external perspective view of the assembled state with the cover removed, FIG. 2 is an exploded perspective view, and FIG. 3 is an exploded perspective view of the stator core, the coil bobbin, and the coil terminal lead. Are given the same reference numerals.
In the assembly structure of the illustrated embodiment, the armature 8 of the operating electromagnet is made of a strip-shaped magnetic plate, and is disposed at an upper position opposite to the insulating substrate 1 with respect to the stator 4, and then the upper surface of the end of the coil bobbin 5. A hinge side end (right end) is fitted between two hinge arms 5a each having a claw portion at its tip to prevent the armature 8 erected on the armature, and the armature 8 is fixed to the stator core with the hinge side end as a fulcrum. 4, and is held so as to be able to rotate. At this position, both ends of the stator core 6 are opposed to the opposite contact portions 6 a and 6 b.

また、図２に示すようにアーマチュア８の両端近くには磁性板の左右側縁に前記コイルボビン５のヒンジアーム５ａがそれぞれ嵌合する凹状の係合溝８ａと、後述する作動片９の支持脚９ａの先端に形成した係合溝９ａ-1がそれぞれ嵌合する凹状の係合溝８ａを形成し、ヒンジ側の係合溝８ａに前記ヒンジアーム５ａを通すとともに、反ヒンジ側の係合溝８ａに作動片９の支持脚９ａの係合溝９ａ-1を圧入して嵌合するようにしている。
ここで、前記アーマチュア８の磁性体の左右側縁に形成したヒンジ側の係合溝８ａと反ヒンジ側の係合溝８ａは、アーマチュア８の長手方向に対して対称な位置に同じ凹形状として形成されており、アーマチュア８の長手方向の左右と板厚方向の上下が対称形状となっている。
上記のようなアーマチュアの形状とすることにより、従来の電磁継電器においては、組立時に常にアーマチュアの方向の識別が必要となるため、組立作業が面倒であるとともに組立設備が煩雑になっていたのに対して、本実施例では、アーマチュアの上下左右の向きを気にすることなく固定子鉄心４に組み込むことができるので、アーマチュアの組立が容易となる。 Further, as shown in FIG. 2, near the both ends of the armature 8, a concave engagement groove 8 a in which the hinge arm 5 a of the coil bobbin 5 is fitted to the left and right edges of the magnetic plate, and a support leg of the operation piece 9 to be described later. The engaging groove 9a-1 formed at the tip of 9a forms a recessed engaging groove 8a into which the engaging groove 9a-1 is fitted. The hinge arm 5a is passed through the engaging groove 8a on the hinge side, and the engaging groove on the anti-hinge side The engaging groove 9a-1 of the support leg 9a of the operating piece 9 is press-fitted into the 8a to be fitted.
Here, the hinge-side engagement groove 8a and the anti-hinge-side engagement groove 8a formed on the left and right side edges of the magnetic body of the armature 8 have the same concave shape at positions symmetrical to the longitudinal direction of the armature 8. It is formed, and the left and right in the longitudinal direction of the armature 8 and the top and bottom in the thickness direction are symmetrical.
By adopting the shape of the armature as described above, in the conventional electromagnetic relay, it is necessary to always identify the direction of the armature at the time of assembly, so the assembly work is troublesome and the assembly equipment is complicated. On the other hand, in this embodiment, the armature can be easily assembled because it can be incorporated into the stator core 4 without worrying about the vertical and horizontal directions of the armature.

また、固定子鉄心６は、両端の脚部を側方へＬ形に屈曲した二枚の門形磁性板６-1，６-2を背中合わせに重ね、各磁性板６-1，６-2の脚部端面（上面）を同一面に揃えてアーマチュア８に対向する平坦な接極部６ａ，６ｂを構成した上で、その門形磁性板の胴部に嵌め込んだコイルボビン５に電磁コイル７を巻装し、このコイル巻き始め，巻き終わり端をコイルボビン５の端部に組み付けた端子リード７ａ，７ｂに接続して下方に引き出している。
一方、絶縁基板１は上下面を絶縁物で覆った箱形構造になり、その底壁上に固定接触子２，および可動接触子３を側方から挿入して上下向かい合わせに配置しその端子リード２ａ，３ａを基板の下方に引き出しており、この絶縁基板１の上に前記した操作用電磁石の固定子組立体を積み重ねている。なお、可動接触子３は板バネの接触子片に接点を設け、固定接触子２の上側に配して固定接触子２から離間した位置に保持している。 In addition, the stator iron core 6 has two portal magnetic plates 6-1 and 6-2, which are bent in L-shapes at both ends, and are stacked back to back. The flat armature portions 6a and 6b facing the armature 8 with the leg end surfaces (upper surfaces) of the same are arranged on the same surface, and then the electromagnetic coil 7 is attached to the coil bobbin 5 fitted into the body portion of the portal magnetic plate. The coil winding start and winding end ends are connected to terminal leads 7a and 7b assembled to the end portions of the coil bobbin 5 and drawn downward.
On the other hand, the insulating substrate 1 has a box structure in which the upper and lower surfaces are covered with an insulator, and the fixed contact 2 and the movable contact 3 are inserted from the side on the bottom wall, and are arranged face to face. The leads 2a and 3a are drawn out below the substrate, and the above-described operation electromagnet stator assembly is stacked on the insulating substrate 1. The movable contact 3 is provided with a contact point on the contact piece of the leaf spring, and is arranged on the upper side of the fixed contact 2 and is held at a position separated from the fixed contact 2.

そして、前記アーマチュア８と絶縁基板１に配した可動接触子３との間を絶縁物製の作動片９で連繋している。この作動片９はＬ字形の形状になり、その上半部には二股状の支持脚９ａを形成し（図２参照）、この支持脚９ａの間に固定子鉄心６の反ヒンジ側端部を遊嵌した上で、支持脚９ａの先端に形成した係合溝９ａ-1をアーマチュア８の反ヒンジ側端に形成した係合溝８ａに掛止して懸架している。また、作動片９の下半部は箱型絶縁基板１の上壁に切欠いた隙間を通して内方に引き入れてその先端９ｂを可動接触子３の板バネ接触子片の上に重ね、そのバネ弾性により作動片９を介してアーマチュア８の反ヒンジ側端部を上方に押し上げている。
なお、電磁継電器の組立作業は、前記アーマチュア８、固定子鉄心４、作動片９を前記絶縁基板１に対して一方向から組み付ければよく、電磁継電器の組立作業が容易に行える。 The armature 8 and the movable contact 3 disposed on the insulating substrate 1 are connected by an operating piece 9 made of an insulator. The actuating piece 9 is L-shaped, and a bifurcated support leg 9a is formed on the upper half of the actuating piece 9 (see FIG. 2), and the end of the stator core 6 on the side opposite to the hinge is interposed between the support legs 9a. Is loosely fitted, and the engagement groove 9a-1 formed at the tip of the support leg 9a is hooked on and suspended from the engagement groove 8a formed at the non-hinge side end of the armature 8. Further, the lower half of the operating piece 9 is drawn inward through a gap cut out in the upper wall of the box-type insulating substrate 1, and its tip 9b is overlaid on the leaf spring contact piece of the movable contact 3, and its spring elasticity. Thus, the end portion on the side opposite to the hinge of the armature 8 is pushed upward via the operating piece 9.
The assembly work of the electromagnetic relay can be performed easily by assembling the armature 8, the stator core 4, and the operating piece 9 with respect to the insulating substrate 1 from one direction.

上記構成で、電磁コイル７を励磁すると、アーマチュア８が固定子鉄心６の接極部６ａ，６ｂに吸着され、作動片９を介して可動接触子３の板バネ接触子片を下方に押し込む。これにより可動接触子３の接点が固定接触子２の接点に当接してＯＮとなる。また、励磁コイル７を消磁すると、可動接触子２が弾性復帰して接点を開離すると同時に、作動片９を介してアーマチュア８の反ヒンジ側端を押し上げて固定子鉄心６の接極部６ａから離脱させる。
ここで、図１の組立構造から判るように、絶縁基板１に配した固定接触子２，可動接触子３の接点部に対して操作用電磁石の固定子４およびアーマチュア８は絶縁基板１の上壁を隔てて上方側に隔離されており、特にアーマチュア８は固定子４の上部側に配置した上で、二股形状の作動片（絶縁物製）９を介して可動接触子３との間を連繋するようにしている。これにより、図４に示した従来の組立構造と比べて接点部と電磁石組立体との間に大きな絶縁距離が確保され、それだけ電磁継電器の使用電圧に対する安全性が高くなる。また、操作用電磁石の鉄心磁路についても、固定子鉄心６と短冊状のアーマチュア８を経由する磁路長が短縮されて電磁石の磁気操作力が向上する。加えて継電器全体の外形サイズも従来構造と比べて薄形，コンパクトとなり、プリント板に搭載して使用する際の占有スペースが少なくて済む。 With the above configuration, when the electromagnetic coil 7 is excited, the armature 8 is attracted to the contact portions 6 a and 6 b of the stator core 6, and the leaf spring contact piece of the movable contact 3 is pushed downward via the operating piece 9. As a result, the contact of the movable contact 3 comes into contact with the contact of the fixed contact 2 and is turned ON. Further, when the exciting coil 7 is demagnetized, the movable contact 2 is elastically restored to release the contact, and at the same time, the armature 8 is pushed up the end on the anti-hinge side of the armature 8 and the armature 6a of the stator core 6 is pushed. To leave.
Here, as can be seen from the assembly structure of FIG. 1, the operation electromagnet stator 4 and the armature 8 are located on the insulating substrate 1 with respect to the contact portions of the fixed contact 2 and the movable contact 3 disposed on the insulating substrate 1. In particular, the armature 8 is disposed on the upper side of the stator 4 and is separated from the movable contact 3 via a bifurcated operating piece (made of an insulator) 9. I try to connect. Thereby, compared with the conventional assembly structure shown in FIG. 4, a large insulation distance is ensured between the contact portion and the electromagnet assembly, and the safety against the working voltage of the electromagnetic relay is increased accordingly. In addition, for the iron core magnetic path of the operating electromagnet, the magnetic path length passing through the stator core 6 and the strip-shaped armature 8 is shortened, and the magnetic operating force of the electromagnet is improved. In addition, the overall size of the relay is thinner and more compact than the conventional structure, and it occupies less space when mounted on a printed board.

本発明の実施例に係る電磁継電器のカバーを外した状態での組立構造の斜視図The perspective view of the assembly structure in the state which removed the cover of the electromagnetic relay which concerns on the Example of this invention 図１の分解斜視図1 is an exploded perspective view of FIG. 図２における固定子鉄心，コイルボビン，およびコイル端子リードの分解斜視図2 is an exploded perspective view of the stator core, the coil bobbin, and the coil terminal lead in FIG. 従来の電磁継電器の組立構造を表す分解斜視図The exploded perspective view showing the assembly structure of the conventional electromagnetic relay 図４における操作用電磁石の固定子とアーマチュアとの分解斜視図4 is an exploded perspective view of the stator and armature of the electromagnet for operation in FIG.

符号の説明Explanation of symbols

１絶縁基板
２固定接触子
３可動接触子
４操作用電磁石の固定子
５コイルボビン
５ａヒンジアーム
６固定子鉄心
６-1，６-2 磁性板
６ａ，６ｂ接極部
７電磁コイル
８アーマチュア
８ａ係合溝
９作動片
９ａ二股状の支持脚
１０ケースカバー DESCRIPTION OF SYMBOLS 1 Insulation board | substrate 2 Fixed contact 3 Movable contact 4 Stator of electromagnet for operation 5 Coil bobbin 5a Hinge arm 6 Stator core 6-1, 6-2 Magnetic plate 6a, 6b Contacting part 7 Electromagnetic coil 8 Armature 8a Engagement Groove 9 Actuating piece 9a Bifurcated support leg 10 Case cover

Claims

両端を接極部とする鉄心の胴部にコイルボビンを介して電磁コイルを巻装した固定子と、前記鉄心の接極部に対峙して配置した支点形のアーマチュアと、固定接触子およびバネ復帰形の可動接触子を組み付け、かつその上に前記固定子を載置支持する絶縁基板と、アーマチュアの吸着動作に連動して可動接触子を駆動する絶縁物製の作動片と、ケースカバーとの組立体からなる電磁継電器において、前記アーマチュアを短冊形の磁性板として固定子鉄心に対し絶縁基板と反対側の上方に配置した上で、固定子鉄心の両端接極部にはアーマチュアの板面と対向する平坦な接極面を形成し、作動片は、その上半部に二股状の支持脚を形成してアーマチュアの他端に掛止連結した上で、下部先端を絶縁基板上に配した可動接触子の板バネ接触子片の上に載せ、前記アーマチュアに前記コイルボビンの端部上面に形成した２本のヒンジアームが嵌合する凹部と前記作動片の上半部に形成した二股状の支持脚が嵌合する凹部を設けるとともに、前記二つの凹部をアーマチュアの長手方向に対して対称となる位置に形成したことを特徴とする電磁継電器。 A stator in which an electromagnetic coil is wound through a coil bobbin on the core of the iron core with both ends as contact parts, a fulcrum armature arranged opposite to the contact part of the iron core, a fixed contact and a spring return An insulating substrate for mounting and supporting the stator on which the movable member is mounted, an insulating working piece for driving the movable contact in conjunction with an armature adsorption operation, and a case cover In an electromagnetic relay composed of an assembly, the armature is disposed as a strip-shaped magnetic plate above the stator iron core on the opposite side of the insulating substrate, and the armature plate surface and An opposing flat armature surface is formed, and the working piece is formed with a bifurcated support leg on the upper half of the working piece and is hooked to the other end of the armature, and the lower end is disposed on the insulating substrate. The leaf spring contact piece of the movable contact The armature is provided with a recess for fitting two hinge arms formed on the upper end of the coil bobbin and a recess for fitting a bifurcated support leg formed on the upper half of the operating piece, The electromagnetic relay according to claim 1, wherein the two concave portions are formed at positions symmetrical with respect to the longitudinal direction of the armature .