JP5853223B2 - Relay device - Google Patents

Relay device Download PDF

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JP5853223B2
JP5853223B2 JP2011063256A JP2011063256A JP5853223B2 JP 5853223 B2 JP5853223 B2 JP 5853223B2 JP 2011063256 A JP2011063256 A JP 2011063256A JP 2011063256 A JP2011063256 A JP 2011063256A JP 5853223 B2 JP5853223 B2 JP 5853223B2
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contact
mover
relay device
straight line
movable
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JP2012199136A (en
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裕亮 森口
裕亮 森口
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Panasonic Intellectual Property Management Co Ltd
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Description

本発明は、電気回路の接点の開閉を行うリレー装置に関する。   The present invention relates to a relay device that opens and closes contacts of an electric circuit.

従来から、例えば特許文献１に示すようなリレー装置が提案されており、このリレー装置は、固定接点を設けた２つの固定端子と、２つの可動接点を設けた可動接触子と、可動接触子を可動させる駆動部とを備える。   Conventionally, for example, a relay device as shown in Patent Document 1 has been proposed. This relay device has two fixed terminals provided with fixed contacts, a movable contact provided with two movable contacts, and a movable contact. And a drive unit for moving the device.

このリレー装置では、駆動部によって可動接触子が可動されることで、可動接点が固定接点に当接する。   In this relay device, the movable contact is brought into contact with the fixed contact by moving the movable contact by the drive unit.

特開平１０−１６２６７６号公報JP-A-10-162676

上述したようなリレー装置では、当接した状態の可動接触子と２つの固定端子とに大電流が流れた場合に、この大電流によって可動接触子と２つの固定端子との間に電磁反発力が生じて、可動接点と固定接点とが離れてしまうおそれがある。このように可動接触子が可動接点と固定接点とを当接させる位置にあるにもかかわらず、可動接点と固定接点とが離れてしまっては、安定した通電を行うことが難しい。   In the relay device as described above, when a large current flows through the movable contact and the two fixed terminals in contact with each other, an electromagnetic repulsive force is generated between the movable contact and the two fixed terminals by the large current. May occur, and the movable contact and the fixed contact may be separated. Although the movable contact is in a position where the movable contact and the fixed contact abut, it is difficult to perform stable energization if the movable contact and the fixed contact are separated.

そこで、上記事情を鑑みて、本発明は、電磁反発力により接点と可動子とが互いに離れてしまうことを抑制して、安定した通電を行うことができるリレー装置を提案することを課題とする。   Therefore, in view of the above circumstances, it is an object of the present invention to propose a relay device capable of performing stable energization by suppressing the contact and the mover from being separated from each other by electromagnetic repulsion. .

上記課題を解決するための本発明のリレー装置は、接点を有する２つの固定端子と、２つの接触部を有し前記接点と前記接触部とが互いに接触する閉位置と互いに離れる開位置との間で直線移動可能な可動子とを備え、前記２つの固定端子は、前記可動子の移動方向に延設された形状を有し、その延設方向に沿って内部を電流が流れるように設けられ、前記可動子は、前記閉位置にあるときに前記２つの前記接点間に通電路を形成する導通部を有し、前記導通部は、前記可動子の移動方向に直交する平面内において前記２つの前記接触部間を結ぶ直線上を通らずに前記通電路を形成することを特徴とする。 The relay device of the present invention for solving the above-described problems includes two fixed terminals having contacts, two contact portions, a closed position where the contacts and the contact portions contact each other, and an open position where the contact portions are separated from each other. The two fixed terminals have a shape extending in the moving direction of the mover, and are provided so that an electric current flows through the extending direction along the extending direction. The movable element has a conduction part that forms a current path between the two contact points when the movable element is in the closed position, and the conduction part is in a plane perpendicular to the moving direction of the movable element. The energization path is formed without passing on a straight line connecting the two contact portions.

また、前記導通部は、前記２つの前記接触部のうち一方の前記接触部から前記平面内において前記直線と交差する一方向に延びた第一導通片と、他方の前記接触部から前記一方向に延びた第二導通片と、前記第一導通片と前記第二導通片との間を前記直線に沿って連結する連結片とを有することが好ましい。   The conductive portion includes a first conductive piece extending in one direction intersecting the straight line in the plane from one of the two contact portions, and the one direction from the other contact portion. It is preferable to have the 2nd conduction | electrical_connection piece extended in this, and the connection piece which connects between said 1st conduction | electrical_connection piece and said 2nd conduction | electrical_connection piece along the said straight line.

あるいは、前記導通部は、前記平面内において前記直線から離れる向きに凸となるように湾曲していることが好ましい。   Or it is preferable that the said conduction | electrical_connection part is curving so that it may become convex in the direction away from the said straight line in the said plane.

本発明のリレー装置は、電磁反発力により接点と可動子とが互いに離れてしまうことを抑制して、安定した通電を行うことができる。   The relay device of the present invention can perform stable energization by suppressing the contact and the mover from being separated from each other by electromagnetic repulsion.

本発明の第一実施形態のリレー装置を示し、（ａ）は可動子の平面図であり、（ｂ）は固定端子と可動子とを流れる電流とその電流により形成される磁界について説明するための斜視図である。The relay apparatus of 1st embodiment of this invention is shown, (a) is a top view of a needle | mover, (b) is for demonstrating the magnetic field formed with the electric current which flows through a fixed terminal and a needle | mover, and the electric current. FIG. 同上のリレー装置全体を示す正面断面図である。It is front sectional drawing which shows the whole relay apparatus same as the above. 本発明の第二実施形態のリレー装置を示し、（ａ）は可動子の平面図であり、（ｂ）は固定端子と可動子とを流れる電流とその電流により形成される磁界について説明するための斜視図である。The relay apparatus of 2nd embodiment of this invention is shown, (a) is a top view of a needle | mover, (b) is for demonstrating the magnetic field formed with the electric current which flows through a fixed terminal and a needle | mover, and the electric current. FIG. 比較例のリレー装置を示し、（ａ）は可動子の平面図であり、（ｂ）は固定端子と可動子とを流れる電流とその電流により形成される磁界について説明するための斜視図である。The relay apparatus of a comparative example is shown, (a) is a top view of a needle | mover, (b) is a perspective view for demonstrating the electric current which flows through a fixed terminal and a needle | mover, and the magnetic field formed with the current. .

以下、本発明を添付図面に示す実施形態に基づいて説明する。本発明の実施形態のリレー装置は、例えば、ＥＶ（電気自動車）のバッテリーの電流をモータ等に送るための、電気回路の接点の開閉に用いられる。なお、ＥＶに限らず、他の装置に用いてもよい。   Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. The relay device according to the embodiment of the present invention is used, for example, for opening and closing a contact of an electric circuit for sending a current of a battery of an EV (electric vehicle) to a motor or the like. In addition, you may use for not only EV but another apparatus.

本実施形態のリレー装置１の基本的な構成について、図２を参照して、まず説明する。リレー装置１は、接点５を有する２つの固定端子４，４と２つの接触部７，７を有する可動子６とを有する接点部２と、接点５，５と接触部７，７とを接離させる方向に可動子６を移動させる駆動部１４と、接点部２を収納する接点容器３７とを備える。以下、リレー装置１について、図２の上下左右を上下左右とし、図２の図面に直交する方向のうち手前側を前方とし、奥側を後方として説明する。なお、この各方向の設定は、説明の便宜を図るものであって、リレー装置１の配置する向きを限定するものではない。   A basic configuration of the relay device 1 of the present embodiment will be described first with reference to FIG. The relay device 1 connects the contact part 2 having the two fixed terminals 4 and 4 having the contact 5 and the movable element 6 having the two contact parts 7 and 7, the contact 5 and 5, and the contact parts 7 and 7. The drive part 14 which moves the needle | mover 6 to the direction made to separate, and the contact container 37 which accommodates the contact part 2 are provided. Hereinafter, the relay device 1 will be described with the top, bottom, left, and right in FIG. 2 as the top, bottom, left, and right, the front side in the direction orthogonal to the drawing in FIG. The setting of each direction is for convenience of explanation, and does not limit the direction in which the relay device 1 is arranged.

接点容器３７は、接点部２を囲むケース１０と、金属部とからなる。ケース１０は、絶縁材料で形成されており、下方に開口した箱状をなす。金属部は、金属材料で形成されており、後述するヨーク４０の上端部と、固定鉄心２３の上端部と、ケース１０とヨーク４０の上端部とを結合する結合部材２９とで構成される。接点部２が収納される接点容器３７の内側の空間Ｓは、本実施形態では気密空間となっている。   The contact container 37 includes a case 10 surrounding the contact part 2 and a metal part. The case 10 is made of an insulating material and has a box shape opened downward. The metal portion is made of a metal material, and includes an upper end portion of a yoke 40 to be described later, an upper end portion of the fixed iron core 23, and a coupling member 29 that couples the case 10 and the upper end portion of the yoke 40. The space S inside the contact container 37 in which the contact part 2 is accommodated is an airtight space in this embodiment.

ケース１０の上部１１（底部１１）には、２つの固定端子４，４が固定されており、この２つの固定端子４，４の下面には各々接点５，５が設けられている。以下、２つの固定端子４，４のうち左側を第一固定端子４５とし、右側を第二固定端子４６とし、第一固定端子４５の下面の接点５を第一接点５０とし、第二固定端子４６の下面の接点５を第二接点５１とする。そして、駆動部１４には、板状の可動子６が上下動自在に取り付けてあって、この可動子６は上面に２つの接触部７，７を有している。この２つの接触部７，７は、可動子６の上面のうち、２つの接点５，５に各々対向する位置に形成されている。以下、第一接点５０に対向する接触部７を第一接触部７０とし、第二接点５１に対向する接触部７を第二接触部７１とする。   Two fixed terminals 4, 4 are fixed to the upper part 11 (bottom part 11) of the case 10, and contacts 5, 5 are provided on the lower surfaces of the two fixed terminals 4, 4, respectively. Hereinafter, the left of the two fixed terminals 4 and 4 is the first fixed terminal 45, the right is the second fixed terminal 46, the contact 5 on the lower surface of the first fixed terminal 45 is the first contact 50, and the second fixed terminal. The contact 5 on the lower surface of 46 is a second contact 51. A plate-like movable element 6 is attached to the drive unit 14 so as to be movable up and down. The movable element 6 has two contact parts 7 and 7 on the upper surface. The two contact portions 7 and 7 are formed on the upper surface of the movable element 6 at positions facing the two contact points 5 and 5, respectively. Hereinafter, the contact portion 7 that faces the first contact 50 is referred to as a first contact portion 70, and the contact portion 7 that faces the second contact 51 is referred to as a second contact portion 71.

駆動部１４は、接触部７，７と接点５，５とが互いに接触する（第一接触部７０と第一接点５０とが接触し、且つ第二接触部７１と第二接点５１とが接触する）閉位置と、接触部７，７と接点５，５とが所定距離離れる開位置との間で、可動子６を上下に直線移動させる。固定端子４，４は導電性材料で形成されており、接点５，５と接触部７，７とは接点材料で形成されている。２つの接点５，５と２つの接触部７，７とが接触した状態で、２つの固定端子４，４は可動子６を介して電気的に接続された状態となり、このとき本実施形態のリレー装置１は、電気回路の接点を閉じた状態となる。この状態で、図１（ｂ）に示すように、電流Ｉ１〜Ｉ５が第一固定端子４５から可動子６を通って第二固定端子４６へと流れる。   In the drive unit 14, the contact parts 7 and 7 and the contacts 5 and 5 are in contact with each other (the first contact part 70 and the first contact 50 are in contact with each other, and the second contact part 71 and the second contact 51 are in contact with each other). The movable element 6 is linearly moved up and down between the closed position and the open position where the contact portions 7 and 7 and the contacts 5 and 5 are separated by a predetermined distance. The fixed terminals 4 and 4 are made of a conductive material, and the contacts 5 and 5 and the contact portions 7 and 7 are made of a contact material. In a state where the two contact points 5 and 5 and the two contact portions 7 and 7 are in contact with each other, the two fixed terminals 4 and 4 are electrically connected via the mover 6. The relay apparatus 1 will be in the state which closed the contact of the electric circuit. In this state, as shown in FIG. 1B, currents I <b> 1 to I <b> 5 flow from the first fixed terminal 45 through the mover 6 to the second fixed terminal 46.

この接点を閉じた通電状態から、接点を開く（つまり２つの接触部７，７を２つの接点５，５から離す）と、一方の接触部７と一方の接点５との間および、他方の接触部７と他方の接点５との間に、各々アークが生じる場合がある。このアークを引き伸ばして消滅させるための構成として、接点容器３７の外側には、アークを接点容器３７の壁１２側に引き伸ばす永久磁石等からなる消孤装置３６が設けられている。詳しくは、ケース１０の、２つの接点５，５が並ぶ方向の外側（ケース１０の左右外側）に各々、消孤装置３６，３６が設けられている。この消孤装置３６，３６が、第一接点５０と第一接触部７０との間に生じたアークをケース１０の左の壁１２側に引き伸ばし、第二接点５１と第二接触部７１との間に生じたアークをケース１０の右の壁１２側に引き伸ばす。また、本実施形態では、アークを効率良く消滅させるために、空間Ｓに、水素を主体とするガスを例えば２気圧程度で注入して、空間Ｓ内の冷却効果を向上させている。   When the contact is opened from the closed energized state (that is, the two contact portions 7 and 7 are separated from the two contacts 5 and 5), between the one contact portion 7 and the one contact 5, and the other An arc may be generated between the contact portion 7 and the other contact point 5. As a configuration for extending and extinguishing the arc, an extinguishing device 36 made of a permanent magnet or the like for extending the arc toward the wall 12 of the contact container 37 is provided outside the contact container 37. Specifically, the extinguishing devices 36 and 36 are provided on the outside of the case 10 in the direction in which the two contact points 5 and 5 are arranged (the left and right outside of the case 10), respectively. The extinguishing devices 36, 36 extend the arc generated between the first contact 50 and the first contact portion 70 toward the left wall 12 side of the case 10, so that the second contact 51 and the second contact portion 71 The arc generated therebetween is stretched to the right wall 12 side of the case 10. In this embodiment, in order to extinguish the arc efficiently, a gas mainly containing hydrogen is injected into the space S at, for example, about 2 atm to improve the cooling effect in the space S.

駆動部１４は、ヨーク４０と、コイル２８と、コイルボビン２７と、固定鉄心２３と、可動鉄心２４と、鉄心ケース２２と、復帰バネ２６と、可動軸１５と、接圧バネ９と、接圧バネホルダ１６とを備える。ヨーク４０と固定鉄心２３と可動鉄心２４とは磁性体の金属材料で形成され、鉄心ケース２２と可動軸１５とは非磁性体で形成されている。接圧バネホルダ１６は、絶縁材料の非磁性体で形成されている。   The drive unit 14 includes a yoke 40, a coil 28, a coil bobbin 27, a fixed iron core 23, a movable iron core 24, an iron core case 22, a return spring 26, a movable shaft 15, a contact pressure spring 9, and a contact pressure. And a spring holder 16. The yoke 40, the fixed iron core 23, and the movable iron core 24 are made of a magnetic metal material, and the iron core case 22 and the movable shaft 15 are made of a non-magnetic material. The contact pressure spring holder 16 is formed of a nonmagnetic material of an insulating material.

鉄心ケース２２は、有底筒状であり、鉄心ケース２２の内側下部には可動鉄心２４が上下動自在に配置され、鉄心ケース２２の内側上部には固定鉄心２３が固定されている。この固定鉄心２３及び可動鉄心２４には、可動軸１５が上下方向に貫通している。可動軸１５の上端には、接圧バネホルダ１６が固定されている。   The iron core case 22 has a bottomed cylindrical shape. A movable iron core 24 is vertically movable at the inner lower portion of the iron core case 22, and a fixed iron core 23 is fixed to the inner upper portion of the iron core case 22. A movable shaft 15 penetrates the fixed iron core 23 and the movable iron core 24 in the vertical direction. A contact pressure spring holder 16 is fixed to the upper end of the movable shaft 15.

接圧バネホルダ１６は、可動子６と接圧バネ９とを内側に保持するホルダであって、本実施形態では、天板と底板と連結板の３枚の平板を結合させてなり、前方向と左右方向とが開口する箱状に形成されている。この底板に可動軸１５の上端が固定されている。そして、接圧バネホルダ１６の天板と底板との間には、可動子６と接圧バネ９とがこの順番で上から順に配置されており、可動子６の左右方向中央部の上面が、接圧バネ９によって、接圧バネホルダ１６の天板の下面に押し付けられている。駆動部１４によって可動子６が閉位置まで移動されたとき、接圧バネ９は上下方向に縮んで、各接触部７，７を各接点５，５に押し付け、接圧を確保する。なお、接圧バネホルダ１６の形状は上述した形状に限定されず、例えば左右方向のみ開口する角形の筒状であってもよい。   The contact pressure spring holder 16 is a holder that holds the movable element 6 and the contact pressure spring 9 inside. In the present embodiment, the contact pressure spring holder 16 is formed by combining three plates of a top plate, a bottom plate, and a connection plate, and moves forward. And a left-right direction are formed in a box shape. The upper end of the movable shaft 15 is fixed to the bottom plate. Then, between the top plate and the bottom plate of the contact pressure spring holder 16, the mover 6 and the contact pressure spring 9 are arranged in this order from the top, and the upper surface of the center part in the left-right direction of the mover 6 is The contact pressure spring 9 is pressed against the lower surface of the top plate of the contact pressure spring holder 16. When the movable element 6 is moved to the closed position by the drive unit 14, the contact pressure spring 9 is contracted in the vertical direction, and the contact portions 7 and 7 are pressed against the contact points 5 and 5 to ensure contact pressure. In addition, the shape of the contact pressure spring holder 16 is not limited to the above-described shape, and may be, for example, a rectangular cylinder opening only in the left-right direction.

可動軸１５は、可動鉄心２４に固定されていて、可動鉄心２４の上下移動に伴って上下に移動する。コイルボビン２７は円筒状に形成されていて、その内側に鉄心ケース２２が挿入されている。コイル２８は、コイルボビン２７に巻きつけられている。固定鉄心２３の下端部と可動鉄心２４の上端部との間には、復帰バネ２６が配置されていて、固定鉄心２３と可動鉄心２４とを互いに離れる向きに付勢する。   The movable shaft 15 is fixed to the movable iron core 24 and moves up and down as the movable iron core 24 moves up and down. The coil bobbin 27 is formed in a cylindrical shape, and an iron core case 22 is inserted therein. The coil 28 is wound around the coil bobbin 27. A return spring 26 is disposed between the lower end portion of the fixed iron core 23 and the upper end portion of the movable iron core 24, and urges the fixed iron core 23 and the movable iron core 24 away from each other.

本実施形態では、接点部２を閉じる際には、コイル２８に電流を流すことで、固定鉄心２３と可動鉄心２４とが磁化され、固定鉄心２３に可動鉄心２４が吸着する。このとき、可動子６が開位置から閉位置へと移動して、接触部７，７と接点５，５とが接触する。また、接点部２を開く際には、コイル２８への電流供給を停止すると、復帰バネ２６の付勢力によって、固定鉄心２３から可動鉄心２４が離れる。このとき、可動子６が閉位置から開位置へと移動して、接触部７，７と接点５，５とが離れる。なお、駆動部１４は、接点５，５と接触部７，７とを接離可能に可動子６を移動させることができればよく、上述の構成に限定されない。   In the present embodiment, when closing the contact portion 2, by passing a current through the coil 28, the fixed iron core 23 and the movable iron core 24 are magnetized, and the movable iron core 24 is attracted to the fixed iron core 23. At this time, the mover 6 moves from the open position to the closed position, and the contact portions 7 and 7 and the contacts 5 and 5 come into contact with each other. When the contact portion 2 is opened, when the current supply to the coil 28 is stopped, the movable core 24 is separated from the fixed core 23 by the urging force of the return spring 26. At this time, the mover 6 moves from the closed position to the open position, and the contact portions 7 and 7 and the contacts 5 and 5 are separated. In addition, the drive part 14 should just be able to move the needle | mover 6 so that the contact points 5 and 5 and the contact parts 7 and 7 can contact / separate, and is not limited to the above-mentioned structure.

空間Ｓには、さらに、接点部２と金属部（ヨーク４０の上端部及び固定鉄心２３の上端部）との間の放電経路を遮断するように接点部２とこの金属部との間に板状の絶縁板２０が設けられている。絶縁板２０によって、接点部２に生じたアークがこの金属部に接触し難くなっている。   In the space S, a plate is further provided between the contact portion 2 and the metal portion so as to block a discharge path between the contact portion 2 and the metal portion (the upper end portion of the yoke 40 and the upper end portion of the fixed iron core 23). An insulating plate 20 is provided. The insulating plate 20 makes it difficult for the arc generated at the contact portion 2 to come into contact with the metal portion.

続いて、本実施形態のリレー装置１の接点部２の構成についてさらに詳しく説明する。   Next, the configuration of the contact part 2 of the relay device 1 according to the present embodiment will be described in more detail.

図１（ｂ）に示すように、第一固定端子４５及び第二固定端子４６は、上下方向に延びた円柱状に形成されている。そして、可動子６は、図１（ａ）に示すように、矩形平板状に形成され、閉位置にあるときに２つの接点５，５（接触部７，７）間に通電路３を形成する導通部８を有する。ここでいう通電路３は、２つの接点５，５間に流れる電流を通す経路である。この導通部８は、可動子６の移動方向（上下方向）に直交する平面内において２つの接触部７，７間を結ぶ直線Ｓ１上を通らずに通電路３を形成する。   As shown in FIG.1 (b), the 1st fixed terminal 45 and the 2nd fixed terminal 46 are formed in the column shape extended in the up-down direction. The movable element 6 is formed in a rectangular flat plate shape as shown in FIG. 1 (a), and forms an energizing path 3 between the two contact points 5, 5 (contact portions 7, 7) when in the closed position. It has a conducting portion 8 that performs. The energization path 3 here is a path through which a current flowing between the two contacts 5 and 5 is passed. The conduction portion 8 forms the energization path 3 without passing on the straight line S1 connecting the two contact portions 7 and 7 in a plane orthogonal to the moving direction (vertical direction) of the mover 6.

本実施形態では、導通部８は、可動子６の一部を構成する。つまり、可動子６は、導通部８と、２つの接触部７，７間を結ぶ直線Ｓ１上に位置する絶縁材料で形成された非導通部６１とから構成されている。なお、図１（ｂ）では非導通部６１の図示を省略している。   In the present embodiment, the conduction portion 8 constitutes a part of the mover 6. In other words, the mover 6 includes a conducting portion 8 and a non-conducting portion 61 formed of an insulating material located on a straight line S1 connecting the two contact portions 7 and 7. In addition, illustration of the non-conduction part 61 is abbreviate | omitted in FIG.1 (b).

導通部８は、第一導通片８０と、第二導通片８１と、第一導通片８０と第二導通片８１との間を連結する連結片８２とで略Ｕ字状に形成される。第一導通片８０は、第一接触部７０から上述の平面内において直線Ｓ１と交差する一方向（前方向）に延びている。第二導通片８１は、第二接触部７１から上述の平面内において直線Ｓ１と交差する一方向（前方向）に延びている。連結片８２は、第一導通片８０の前端部と第二導通片８１の前端部との間を直線Ｓ１に対して平行に連結している。   The conducting portion 8 is formed in a substantially U shape by a first conducting piece 80, a second conducting piece 81, and a connecting piece 82 that connects the first conducting piece 80 and the second conducting piece 81. The first conductive piece 80 extends from the first contact portion 70 in one direction (front direction) intersecting the straight line S1 in the plane described above. The second conductive piece 81 extends from the second contact portion 71 in one direction (front direction) intersecting the straight line S1 in the plane described above. The connecting piece 82 connects the front end portion of the first conducting piece 80 and the front end portion of the second conducting piece 81 in parallel to the straight line S1.

非導通部６１は、第一導通片８０と第二導通片８１と連結片８２とで囲まれた部分であり、接圧バネホルダ１６に保持されている。なお、非導通部６１は、導通部８と電気的に絶縁されていればよく、例えば導通部８との結合部分のみが絶縁材料で形成され、残りの部分が導電性材料で形成されていてもよい。   The non-conductive portion 61 is a portion surrounded by the first conductive piece 80, the second conductive piece 81, and the connecting piece 82, and is held by the contact pressure spring holder 16. The non-conductive portion 61 only needs to be electrically insulated from the conductive portion 8. For example, only the coupling portion with the conductive portion 8 is formed of an insulating material, and the remaining portion is formed of a conductive material. Also good.

ところで、図４（ａ）に比較例として例示するような、一般的なリレー装置の可動子６では、全体が導電性材料で形成されており、可動子６の導通部８は、２つの接触部７，７間を結ぶ直線Ｓ１上に通電路を形成している。そのため、比較例のリレー装置では、可動子６が閉位置にある状態で大電流（短絡等によって生じる例えば５，０００Ａ〜１０，０００Ａの電流）が流れた場合に、接点５，５と接触部７，７との間に互いに離れる向きに電磁反発力が生じることがある。この電磁反発力が、可動子６が閉位置にある状態の接圧バネのばね力よりも大きいと、接点５，５と接触部７，７とが互いに離れてしまう。   By the way, in the mover 6 of a general relay device as illustrated as a comparative example in FIG. 4A, the whole is formed of a conductive material, and the conduction portion 8 of the mover 6 has two contacts. An energization path is formed on a straight line S1 connecting the portions 7 and 7. Therefore, in the relay device of the comparative example, when a large current (for example, a current of 5,000 A to 10,000 A generated by a short circuit or the like) flows with the mover 6 in the closed position, the contacts 5 and 5 and the contact portion Electromagnetic repulsive force may be generated in a direction away from each other between 7 and 7. If this electromagnetic repulsive force is larger than the spring force of the contact pressure spring in a state where the movable element 6 is in the closed position, the contacts 5 and 5 and the contact portions 7 and 7 are separated from each other.

この比較例のリレー装置においては以下にようにして電磁反発力が発生しうる。   In the relay device of this comparative example, an electromagnetic repulsive force can be generated as follows.

図４（ｂ）に示すように、可動子６が閉位置にある状態（２つの接触部７，７と２つの接点５，５とが接触した状態）で、第一固定端子４５では下方に向かって電流Ｉ１が流れ、可動子６（導通部８）では右向きに電流Ｉ２が流れ、第二固定端子４６では上方に向かって電流Ｉ３が流れる。すると、第一固定端子４５及び可動子６及び第二固定端子４６周り各々には、電流Ｉ１〜Ｉ３が流れる向きを右ねじの進む向きとした場合に、右ねじのまわる向きと同じ向きの磁界Ｈ１〜Ｈ３が発生する。なお、電流の大きさはＩ１＝Ｉ２＝Ｉ３である。   As shown in FIG. 4B, in the state where the movable element 6 is in the closed position (the two contact portions 7 and 7 and the two contact points 5 and 5 are in contact), the first fixed terminal 45 moves downward. The current I1 flows in the direction toward the right, the current I2 flows in the right direction in the movable element 6 (conduction portion 8), and the current I3 flows in the upper direction in the second fixed terminal 46. Then, around each of the first fixed terminal 45, the movable element 6, and the second fixed terminal 46, when the direction in which the currents I1 to I3 flow is the direction in which the right screw advances, the magnetic field has the same direction as the direction in which the right screw rotates. H1 to H3 are generated. The magnitude of the current is I1 = I2 = I3.

このとき、第一固定端子４５と可動子６とで形成される角部分Ｃ１の内側（第一固定端子４５の右側で可動子６の上側の部分）では、第一固定端子４５の磁界Ｈ１と可動子６の磁界Ｈ２とが同じ向きを向いているため、磁界の強さが角部分Ｃ１の外側と比べて強くなる。同様に、可動子６と第二固定端子４６とで形成される角部分Ｃ２の内側（第二固定端子４６の左側で可動子６の上側の部分）でも、磁界の強さが角部分Ｃ２の外側と比べて強くなる。   At this time, inside the corner portion C1 formed by the first fixed terminal 45 and the mover 6 (on the right side of the first fixed terminal 45 and the upper side of the mover 6), the magnetic field H1 of the first fixed terminal 45 and Since the magnetic field H2 of the mover 6 is directed in the same direction, the strength of the magnetic field is stronger than the outside of the corner portion C1. Similarly, the magnetic field strength of the corner portion C2 is also inside the corner portion C2 formed by the mover 6 and the second fixed terminal 46 (the left portion of the second fixed terminal 46 and the upper portion of the mover 6). Stronger than the outside.

ここで、この両角部分Ｃ１，Ｃ２の内側の磁界の向きは共に同じ向き（前向き）であるので、可動子６は、全体として、前向きの磁界を受けることになる。可動子６には、右向きの電流が流れているので、この磁界と電流との関係で、可動子６には両固定端子４５，４６から離れる向き（下向き）に力（電磁反発力）が作用する。   Here, since the directions of the magnetic fields inside the both corner portions C1 and C2 are the same (forward), the movable element 6 receives a forward magnetic field as a whole. Since a rightward current flows through the mover 6, a force (electromagnetic repulsive force) acts on the mover 6 in a direction away from the fixed terminals 45 and 46 (downward) due to the relationship between the magnetic field and the current. To do.

それに対して、上述した本実施形態のリレー装置１では、図１（ｂ）に示すように、可動子６が閉位置にある状態で、第一固定端子４５では下方に向かって電流Ｉ１が流れ、導通部８のうち第一導通片８０では前向きに電流Ｉ２が流れる。そして、連結片８２では右向きに電流Ｉ３が流れ、第二導通片８１では後向きに電流Ｉ４が流れ、第二固定端子４６では上方に向かって電流Ｉ５が流れる。なお、電流の大きさはＩ１＝Ｉ２＝Ｉ３＝Ｉ４＝Ｉ５である。すると、第一固定端子４５及び可動子６の導通部８及び第二固定端子４６周り各々には、電流Ｉ１〜Ｉ５が流れる向きを右ねじの進む向きとした場合に、右ねじのまわる向きと同じ向きの磁界Ｈ１〜Ｈ５が発生する。   On the other hand, in the relay device 1 of the present embodiment described above, as shown in FIG. 1B, the current I1 flows downward at the first fixed terminal 45 in a state where the mover 6 is in the closed position. In the first conductive piece 80 of the conductive portion 8, a current I2 flows forward. Then, the current I3 flows in the right direction in the connecting piece 82, the current I4 flows in the backward direction in the second conductive piece 81, and the current I5 flows in the upward direction in the second fixed terminal 46. The magnitude of the current is I1 = I2 = I3 = I4 = I5. Then, when the direction in which the currents I1 to I5 flow around the first fixed terminal 45 and the conductive portion 8 of the movable element 6 and the second fixed terminal 46 is the direction in which the right screw advances, Magnetic fields H1 to H5 having the same direction are generated.

このとき、第一固定端子４５と第一導通片８０とで形成される角部分Ｃ３の内側（第一固定端子４５の前側で第一導通片８０の上側の部分）では、第一固定端子４５の磁界Ｈ１と第一導通片８０の磁界Ｈ２とが同じ向きを向いている。そのため、この角部分Ｃ３の内側では、磁界の強さが角部分Ｃ３の外側と比べて強くなる。また、第二導通片８１と第二固定端子４６とで形成される角部分Ｃ４の内側（第二固定端子４６の前側で第二導通片８１の上側の部分）では、第二固定端子４６の磁界Ｈ５と第二導通片８１の磁界Ｈ４とが同じ向きを向いている。そのため、この角部分Ｃ４の内側では、磁界の強さが角部分Ｃ４の外側と比べて強くなる。   At this time, on the inner side of the corner portion C3 formed by the first fixed terminal 45 and the first conductive piece 80 (the front side of the first fixed terminal 45 and the upper portion of the first conductive piece 80), the first fixed terminal 45 is provided. The magnetic field H1 and the magnetic field H2 of the first conductive piece 80 are in the same direction. Therefore, the strength of the magnetic field is increased inside the corner portion C3 as compared with the outside of the corner portion C3. Further, inside the corner portion C4 formed by the second conductive piece 81 and the second fixed terminal 46 (the front side of the second fixed terminal 46 and the upper portion of the second conductive piece 81), the second fixed terminal 46 The magnetic field H5 and the magnetic field H4 of the second conductive piece 81 are in the same direction. Therefore, the strength of the magnetic field is increased inside the corner portion C4 as compared with the outside of the corner portion C4.

ここで、角部分Ｃ３の内側の磁界と、角部分Ｃ４の内側の磁界とは互いに逆向き（左向きと右向き）であるため、可動子６全体としては相殺される。したがって、本実施形態のリレー装置１では、可動子６が電磁反発力に寄与する特定の向きの磁界を受けにくくなり、可動子６に両固定端子４５，４６から離れる向きの電磁反発力が作用することを抑制できる。よって、本実施形態のリレー装置１では、電磁反発力により２つの接点５，５と２つの接触部７，７とが互いに離れてしまうことを抑制して、安定した通電を行うことができる。   Here, since the magnetic field inside the corner portion C3 and the magnetic field inside the corner portion C4 are opposite to each other (leftward and rightward), the entire movable element 6 is canceled out. Therefore, in the relay device 1 of the present embodiment, the mover 6 is less likely to receive a magnetic field in a specific direction that contributes to the electromagnetic repulsion force, and the electromagnetic repulsion force in a direction away from the fixed terminals 45 and 46 acts on the mover 6. Can be suppressed. Therefore, in the relay device 1 of the present embodiment, it is possible to suppress the two contacts 5 and 5 and the two contact portions 7 and 7 from being separated from each other due to the electromagnetic repulsive force, and perform stable energization.

続いて、本発明の第二実施形態のリレー装置１について説明する。本実施形態のリレー装置１は、第一実施形態のリレー装置１とは、可動子６の構成が異なる。   Then, the relay apparatus 1 of 2nd embodiment of this invention is demonstrated. The relay device 1 of the present embodiment is different from the relay device 1 of the first embodiment in the configuration of the mover 6.

可動子６は、図３（ａ）に示すように、移動方向（上下方向）に直交する平面内において、２つの接触部７，７間を結ぶ直線Ｓ１から離れる向きに凸となるように湾曲している弧状の導通部８を備える。導通部８は導電性材料で形成される。   As shown in FIG. 3A, the mover 6 is curved so as to protrude in a direction away from the straight line S1 connecting the two contact portions 7 and 7 in a plane orthogonal to the moving direction (vertical direction). An arcuate conducting portion 8 is provided. The conduction part 8 is formed of a conductive material.

本実施形態では、可動子６は、平面視半円の平板状であり、導通部８と非導通部６１とから構成されている。非導通部６１は、弧状の導通部８で囲まれる部分であり、接圧バネホルダ１６に保持されている。なお、図３（ｂ）では非導通部６１の図示を省略している。非導通部６１は、導通部８と電気的に絶縁されていればよく、例えば導通部８との結合部分のみが絶縁材料で形成され、残りの部分が導電性材料で形成されていてもよい。   In the present embodiment, the mover 6 has a flat plate shape with a semicircle in plan view, and includes a conductive portion 8 and a nonconductive portion 61. The non-conductive portion 61 is a portion surrounded by the arc-shaped conductive portion 8 and is held by the contact pressure spring holder 16. In addition, illustration of the non-conduction part 61 is abbreviate | omitted in FIG.3 (b). The non-conducting portion 61 only needs to be electrically insulated from the conducting portion 8. For example, only the coupling portion with the conducting portion 8 may be formed of an insulating material, and the remaining portion may be formed of a conductive material. .

本実施形態では、図３（ｂ）に示すように、可動子６が閉位置にある状態で、第一固定端子４５では下方に向かって電流Ｉ１が流れ、導通部８では弧を描いて右向きに電流Ｉ２が流れ、第二固定端子４６では上方に向かって電流Ｉ３が流れる。すると、第一固定端子４５及び可動子６の導通部８及び第二固定端子４６周りには各々、磁界Ｈ１〜Ｈ３が発生する。なお、電流の大きさはＩ１＝Ｉ２＝Ｉ３である。   In the present embodiment, as shown in FIG. 3B, in the state where the movable element 6 is in the closed position, the current I1 flows downward in the first fixed terminal 45, and the conduction portion 8 draws an arc and faces right. The current I2 flows through the second fixed terminal 46, and the current I3 flows upward at the second fixed terminal 46. Then, magnetic fields H <b> 1 to H <b> 3 are generated around the first fixed terminal 45, the conduction portion 8 of the mover 6, and the second fixed terminal 46, respectively. The magnitude of the current is I1 = I2 = I3.

このとき、第一固定端子４５と導通部８とで形成される角部分Ｃ５の内側（第一固定端子４５の右前側で導通部８の上側の部分）では、磁界の強さが角部分Ｃ５の外側と比べて強くなる。また、導通部８と第二固定端子４６とで形成される角部分Ｃ６の内側（第二固定端子４６の左前側で導通部８の上側の部分）では、磁界の強さが角部分Ｃ６の外側と比べて強くなる。   At this time, on the inside of the corner portion C5 formed by the first fixed terminal 45 and the conducting portion 8 (the portion on the right front side of the first fixed terminal 45 and the upper portion of the conducting portion 8), the strength of the magnetic field is the corner portion C5. Stronger than outside. In addition, on the inner side of the corner portion C6 formed by the conductive portion 8 and the second fixed terminal 46 (the left front side of the second fixed terminal 46 and the upper portion of the conductive portion 8), the strength of the magnetic field is the corner portion C6. Stronger than the outside.

ここで、角部分Ｃ５の内側の磁界と、角部分Ｃ６の内側の磁界とは互いに逆向きであるため、可動子６全体としては相殺される。したがって、本実施形態のリレー装置１では、可動子６が電磁反発力に寄与する特定の向きの磁界を受けにくくなり、可動子６に両固定端子４５，４６から離れる向きの電磁反発力が作用することを抑制できる。よって、本実施形態のリレー装置１では、この電磁反発力により２つの接点５，５と２つの接触部７，７とが互いに離れてしまうことを抑制して、安定した通電を行うことができる。   Here, since the magnetic field inside the corner portion C5 and the magnetic field inside the corner portion C6 are opposite to each other, the entire movable element 6 is canceled out. Therefore, in the relay device 1 of the present embodiment, the mover 6 is less likely to receive a magnetic field in a specific direction that contributes to the electromagnetic repulsion force, and the electromagnetic repulsion force in a direction away from the fixed terminals 45 and 46 acts on the mover 6. Can be suppressed. Therefore, in the relay apparatus 1 of this embodiment, it can suppress that the two contacts 5 and 5 and the two contact parts 7 and 7 leave | separate from each other by this electromagnetic repulsive force, and can perform stable electricity supply. .

また、本実施形態のリレー装置１では、上述した形状の導通部８を可動子６が備えるようにしたことで、図１（ａ）に示す可動子６と比べて、コーナー部分がないため、可動子６をコンパクトに形成できてスペース効率が向上する。   Moreover, in the relay apparatus 1 of this embodiment, since the mover 6 includes the conductive portion 8 having the above-described shape, there is no corner portion as compared to the mover 6 illustrated in FIG. The mover 6 can be formed compactly, and space efficiency is improved.

なお、上述した第一及び第二実施形態の可動子６は、配置される空間Ｓに合わせて、前後を逆にして形成してもよい。つまり、図１（ａ）に示す可動子６を、導通部８が前向きに開口する略Ｕ字状となるように形成したり、図３（ａ）に示す可動子６を、導通部８が後向きに凸となる弧状となるように形成してもよい。また、可動子６は、導通部８が、可動子６の移動方向（上下方向）に直交する平面内において２つの接触部７，７間を結ぶ直線Ｓ１上を通らずに通電路３を形成すればよく、可動子６及び導通部８の形状は、上述した形状に限定されない。   In addition, you may form the needle | mover 6 of 1st and 2nd embodiment mentioned above according to the space S arrange | positioned upside down. That is, the movable element 6 shown in FIG. 1A is formed so as to have a substantially U shape in which the conduction part 8 opens forward, or the movable part 6 shown in FIG. You may form so that it may become the arc shape which becomes convex backward. Further, the movable element 6 forms the conduction path 3 without the conduction part 8 passing on the straight line S1 connecting the two contact parts 7 and 7 in a plane orthogonal to the moving direction (vertical direction) of the movable element 6. What is necessary is just to do, and the shape of the needle | mover 6 and the conduction | electrical_connection part 8 is not limited to the shape mentioned above.

以上まとめると、本発明の第一及び第二実施形態のリレー装置１は、接点５を有する２つの固定端子４，４と、２つの接触部７，７を有し接点５，５と接触部７，７とが互いに接触する閉位置と互いに離れる開位置との間で直線移動可能な可動子６とを備える。可動子６は、閉位置にあるときに２つの接点５，５間に通電路３を形成する導通部８を有し、導通部８は、可動子６の移動方向に直交する平面内において２つの接触部７，７間を結ぶ直線Ｓ１上を通らずに通電路３を形成する。   In summary, the relay device 1 according to the first and second embodiments of the present invention includes the two fixed terminals 4 and 4 having the contact points 5 and the two contact portions 7 and 7 and the contact points 5 and 5 and the contact portions. 7 and 7 includes a mover 6 that can move linearly between a closed position where 7 and 7 are in contact with each other and an open position where they are separated from each other. The mover 6 has a conduction portion 8 that forms a current path 3 between the two contact points 5 and 5 when in the closed position. The conduction portion 8 is 2 in a plane orthogonal to the moving direction of the mover 6. The energization path 3 is formed without passing on the straight line S1 connecting the two contact portions 7 and 7.

このような構成とすることで、本発明の第一及び第二実施形態のリレー装置１では、可動子６が閉位置にあるときに２つの固定端子４，４と可動子６の導通部８とが通電状態となる。ここで、この導通部８は、可動子６の移動方向に直交する平面内において２つの接触部７，７間を結ぶ直線Ｓ１上を通らずに通電路３を形成する。そのため、各固定端子４，４を流れる電流によって生じる磁界と可動子６の導通部８を流れる電流によって生じる磁界とが重なっても、可動子６が電磁反発力に寄与する特定の向きの磁界を受けにくくなる。よって、可動子６に固定端子４，４から離れる側の電磁反発力が作用することを抑制できる。以上から、本発明の第一及び第二実施形態のリレー装置１では、電磁反発力により接点５，５と可動子６（接触部７，７）とが互いに離れてしまうことを抑制して、安定した通電を行うことができる。しかも、この構成は、可動子６の形状を変更するだけで実現できるから、部品点数の増加に伴うコストアップを回避できる。   With such a configuration, in the relay device 1 according to the first and second embodiments of the present invention, when the mover 6 is in the closed position, the two fixed terminals 4 and 4 and the conduction part 8 of the mover 6 are provided. And become energized. Here, the conduction portion 8 forms the energization path 3 without passing on the straight line S <b> 1 connecting the two contact portions 7, 7 in a plane orthogonal to the moving direction of the mover 6. Therefore, even if the magnetic field generated by the current flowing through the fixed terminals 4 and 4 and the magnetic field generated by the current flowing through the conduction portion 8 of the mover 6 overlap, a magnetic field in a specific direction in which the mover 6 contributes to the electromagnetic repulsion force is generated. It becomes difficult to receive. Therefore, it is possible to suppress the electromagnetic repulsive force on the side away from the fixed terminals 4 and 4 from acting on the mover 6. From the above, in the relay device 1 according to the first and second embodiments of the present invention, the contacts 5, 5 and the mover 6 (contact portions 7, 7) are prevented from being separated from each other by the electromagnetic repulsion force. Stable energization can be performed. In addition, since this configuration can be realized only by changing the shape of the mover 6, it is possible to avoid an increase in cost due to an increase in the number of parts.

また、本発明の第一実施形態のリレー装置１では、導通部８は、第一導通片８０と、第二導通片８１と、第一導通片８０と第二導通片８１との間を連結する連結片８２とを有する。第一導通片８０は、２つの接触部７，７のうち一方の接触部７から平面内において直線Ｓ１と交差する一方向に延びている。第二導通片８１は、他方の接触部７から前記一方向に延びている。連結片８２は、第一導通片８０と第二導通片８１との間を直線Ｓ１に沿って連結している。   Moreover, in the relay apparatus 1 of 1st embodiment of this invention, the conduction | electrical_connection part 8 connects between the 1st conduction | electrical_connection piece 80, the 2nd conduction | electrical_connection piece 81, and the 1st conduction | electrical_connection piece 80 and the 2nd conduction | electrical_connection piece 81. And a connecting piece 82 to be connected. The first conductive piece 80 extends from one of the two contact portions 7 and 7 in one direction intersecting the straight line S1 in the plane. The second conductive piece 81 extends in the one direction from the other contact portion 7. The connecting piece 82 connects the first conducting piece 80 and the second conducting piece 81 along the straight line S1.

このような構成とすることで、本発明の第一実施形態のリレー装置１では、可動子６は曲線部分を含まない。したがって、可動子６が抜き打ち加工等によって製造される場合、材料の無駄を最小限に抑えることができる。   By setting it as such a structure, in the relay apparatus 1 of 1st embodiment of this invention, the needle | mover 6 does not contain a curve part. Therefore, when the mover 6 is manufactured by punching or the like, waste of material can be minimized.

また、本発明の第二実施形態のリレー装置１では、導通部８は、平面内において直線Ｓ１から離れる向きに凸となるように湾曲している。   Moreover, in the relay apparatus 1 of 2nd embodiment of this invention, the conduction | electrical_connection part 8 is curving so that it may become convex in the direction away from the straight line S1 in a plane.

このような構成とすることで、本発明の第二実施形態のリレー装置１では、可動子６をコンパクトに形成できてスペース効率が向上する。   By setting it as such a structure, in the relay apparatus 1 of 2nd embodiment of this invention, the needle | mover 6 can be formed compactly and space efficiency improves.

以上、本発明を添付図面に示す実施形態に基づいて説明したが、本発明は上記の各実施形態に限定されず、本発明の意図する範囲内であれば、適宜の設計変更が可能である。   As mentioned above, although this invention was demonstrated based on embodiment shown to an accompanying drawing, this invention is not limited to said each embodiment, If it is in the range which this invention intends, an appropriate design change is possible. .

１ リレー装置
３ 通電路
４ 固定端子
５ 接点
６ 可動子
７ 接触部
８ 導通部
８０ 第一導通片
８１ 第二導通片
８２ 連結片
Ｓ１ 直線 DESCRIPTION OF SYMBOLS 1 Relay apparatus 3 Current path 4 Fixed terminal 5 Contact 6 Movable element 7 Contact part 8 Conductive part 80 First conductive piece 81 Second conductive piece 82 Connection piece S1 Straight line

Claims (3)

接点を有する２つの固定端子と、２つの接触部を有し前記接点と前記接触部とが互いに接触する閉位置と互いに離れる開位置との間で直線移動可能な可動子とを備え、
前記２つの固定端子はそれぞれ、前記可動子の移動方向に延設された形状を有し、その延設方向に沿って内部を電流が流れるように設けられ、
前記可動子は、前記閉位置にあるときに前記２つの前記接点間に通電路を形成する導通部を有し、
前記導通部は、前記可動子の移動方向に直交する平面内において前記２つの前記接触部間を結ぶ直線上を通らずに前記通電路を形成することを特徴とするリレー装置。 Two fixed terminals having contact points, and a movable element having two contact parts and linearly movable between a closed position in which the contact points and the contact part are in contact with each other and an open position in which the contact parts are separated from each other,
Each of the two fixed terminals has a shape extending in the moving direction of the mover, and is provided so that an electric current flows through the inside along the extending direction.
The movable element has a conduction portion that forms an energization path between the two contact points when in the closed position;
The relay device, wherein the conducting portion forms the energization path without passing on a straight line connecting the two contact portions in a plane orthogonal to the moving direction of the mover. 前記導通部は、前記２つの前記接触部のうち一方の前記接触部から前記平面内において前記直線と交差する一方向に延びた第一導通片と、他方の前記接触部から前記一方向に延びた第二導通片と、前記第一導通片と前記第二導通片との間を前記直線に沿って連結する連結片とを有することを特徴とする請求項１に記載のリレー装置。 The conductive portion extends from one of the two contact portions to the first conductive piece extending in one direction intersecting the straight line in the plane and from the other contact portion to the one direction. The relay device according to claim 1, further comprising: a second conductive piece, and a connecting piece that connects the first conductive piece and the second conductive piece along the straight line. 前記導通部は、前記平面内において前記直線から離れる向きに凸となるように湾曲していることを特徴とする請求項１に記載のリレー装置。 2. The relay device according to claim 1, wherein the conducting portion is curved so as to protrude in a direction away from the straight line in the plane.
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